diff options
Diffstat (limited to 'drivers/platform/x86/thinkpad_acpi.c')
| -rw-r--r-- | drivers/platform/x86/thinkpad_acpi.c | 12096 |
1 files changed, 0 insertions, 12096 deletions
diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c deleted file mode 100644 index e7350c9fa3aa..000000000000 --- a/drivers/platform/x86/thinkpad_acpi.c +++ /dev/null @@ -1,12096 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * thinkpad_acpi.c - ThinkPad ACPI Extras - * - * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net> - * Copyright (C) 2006-2009 Henrique de Moraes Holschuh <hmh@hmh.eng.br> - */ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#define TPACPI_VERSION "0.26" -#define TPACPI_SYSFS_VERSION 0x030000 - -/* - * Changelog: - * 2007-10-20 changelog trimmed down - * - * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to - * drivers/misc. - * - * 2006-11-22 0.13 new maintainer - * changelog now lives in git commit history, and will - * not be updated further in-file. - * - * 2005-03-17 0.11 support for 600e, 770x - * thanks to Jamie Lentin <lentinj@dial.pipex.com> - * - * 2005-01-16 0.9 use MODULE_VERSION - * thanks to Henrik Brix Andersen <brix@gentoo.org> - * fix parameter passing on module loading - * thanks to Rusty Russell <rusty@rustcorp.com.au> - * thanks to Jim Radford <radford@blackbean.org> - * 2004-11-08 0.8 fix init error case, don't return from a macro - * thanks to Chris Wright <chrisw@osdl.org> - */ - -#include <linux/acpi.h> -#include <linux/backlight.h> -#include <linux/bitops.h> -#include <linux/delay.h> -#include <linux/dmi.h> -#include <linux/freezer.h> -#include <linux/hwmon.h> -#include <linux/hwmon-sysfs.h> -#include <linux/init.h> -#include <linux/input.h> -#include <linux/input/sparse-keymap.h> -#include <linux/jiffies.h> -#include <linux/kernel.h> -#include <linux/kthread.h> -#include <linux/leds.h> -#include <linux/list.h> -#include <linux/lockdep.h> -#include <linux/module.h> -#include <linux/mutex.h> -#include <linux/nvram.h> -#include <linux/pci.h> -#include <linux/platform_device.h> -#include <linux/platform_profile.h> -#include <linux/power_supply.h> -#include <linux/proc_fs.h> -#include <linux/rfkill.h> -#include <linux/sched.h> -#include <linux/sched/signal.h> -#include <linux/seq_file.h> -#include <linux/slab.h> -#include <linux/string.h> -#include <linux/string_helpers.h> -#include <linux/sysfs.h> -#include <linux/types.h> -#include <linux/uaccess.h> -#include <linux/units.h> -#include <linux/workqueue.h> - -#include <acpi/battery.h> -#include <acpi/video.h> - -#include <drm/drm_privacy_screen_driver.h> - -#include <sound/control.h> -#include <sound/core.h> -#include <sound/initval.h> - -#include "dual_accel_detect.h" - -/* ThinkPad CMOS commands */ -#define TP_CMOS_VOLUME_DOWN 0 -#define TP_CMOS_VOLUME_UP 1 -#define TP_CMOS_VOLUME_MUTE 2 -#define TP_CMOS_BRIGHTNESS_UP 4 -#define TP_CMOS_BRIGHTNESS_DOWN 5 -#define TP_CMOS_THINKLIGHT_ON 12 -#define TP_CMOS_THINKLIGHT_OFF 13 - -/* NVRAM Addresses */ -enum tp_nvram_addr { - TP_NVRAM_ADDR_HK2 = 0x57, - TP_NVRAM_ADDR_THINKLIGHT = 0x58, - TP_NVRAM_ADDR_VIDEO = 0x59, - TP_NVRAM_ADDR_BRIGHTNESS = 0x5e, - TP_NVRAM_ADDR_MIXER = 0x60, -}; - -/* NVRAM bit masks */ -enum { - TP_NVRAM_MASK_HKT_THINKPAD = 0x08, - TP_NVRAM_MASK_HKT_ZOOM = 0x20, - TP_NVRAM_MASK_HKT_DISPLAY = 0x40, - TP_NVRAM_MASK_HKT_HIBERNATE = 0x80, - TP_NVRAM_MASK_THINKLIGHT = 0x10, - TP_NVRAM_MASK_HKT_DISPEXPND = 0x30, - TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20, - TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f, - TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0, - TP_NVRAM_MASK_MUTE = 0x40, - TP_NVRAM_MASK_HKT_VOLUME = 0x80, - TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f, - TP_NVRAM_POS_LEVEL_VOLUME = 0, -}; - -/* Misc NVRAM-related */ -enum { - TP_NVRAM_LEVEL_VOLUME_MAX = 14, -}; - -/* ACPI HIDs */ -#define TPACPI_ACPI_IBM_HKEY_HID "IBM0068" -#define TPACPI_ACPI_LENOVO_HKEY_HID "LEN0068" -#define TPACPI_ACPI_LENOVO_HKEY_V2_HID "LEN0268" -#define TPACPI_ACPI_EC_HID "PNP0C09" - -/* Input IDs */ -#define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */ -#define TPACPI_HKEY_INPUT_VERSION 0x4101 - -/* ACPI \WGSV commands */ -enum { - TP_ACPI_WGSV_GET_STATE = 0x01, /* Get state information */ - TP_ACPI_WGSV_PWR_ON_ON_RESUME = 0x02, /* Resume WWAN powered on */ - TP_ACPI_WGSV_PWR_OFF_ON_RESUME = 0x03, /* Resume WWAN powered off */ - TP_ACPI_WGSV_SAVE_STATE = 0x04, /* Save state for S4/S5 */ -}; - -/* TP_ACPI_WGSV_GET_STATE bits */ -enum { - TP_ACPI_WGSV_STATE_WWANEXIST = 0x0001, /* WWAN hw available */ - TP_ACPI_WGSV_STATE_WWANPWR = 0x0002, /* WWAN radio enabled */ - TP_ACPI_WGSV_STATE_WWANPWRRES = 0x0004, /* WWAN state at resume */ - TP_ACPI_WGSV_STATE_WWANBIOSOFF = 0x0008, /* WWAN disabled in BIOS */ - TP_ACPI_WGSV_STATE_BLTHEXIST = 0x0001, /* BLTH hw available */ - TP_ACPI_WGSV_STATE_BLTHPWR = 0x0002, /* BLTH radio enabled */ - TP_ACPI_WGSV_STATE_BLTHPWRRES = 0x0004, /* BLTH state at resume */ - TP_ACPI_WGSV_STATE_BLTHBIOSOFF = 0x0008, /* BLTH disabled in BIOS */ - TP_ACPI_WGSV_STATE_UWBEXIST = 0x0010, /* UWB hw available */ - TP_ACPI_WGSV_STATE_UWBPWR = 0x0020, /* UWB radio enabled */ -}; - -/* HKEY events */ -enum tpacpi_hkey_event_t { - /* Original hotkeys */ - TP_HKEY_EV_ORIG_KEY_START = 0x1001, /* First hotkey (FN+F1) */ - TP_HKEY_EV_BRGHT_UP = 0x1010, /* Brightness up */ - TP_HKEY_EV_BRGHT_DOWN = 0x1011, /* Brightness down */ - TP_HKEY_EV_KBD_LIGHT = 0x1012, /* Thinklight/kbd backlight */ - TP_HKEY_EV_VOL_UP = 0x1015, /* Volume up or unmute */ - TP_HKEY_EV_VOL_DOWN = 0x1016, /* Volume down or unmute */ - TP_HKEY_EV_VOL_MUTE = 0x1017, /* Mixer output mute */ - TP_HKEY_EV_ORIG_KEY_END = 0x1020, /* Last original hotkey code */ - - /* Adaptive keyboard (2014 X1 Carbon) */ - TP_HKEY_EV_DFR_CHANGE_ROW = 0x1101, /* Change adaptive kbd Fn row mode */ - TP_HKEY_EV_DFR_S_QUICKVIEW_ROW = 0x1102, /* Set adap. kbd Fn row to function mode */ - TP_HKEY_EV_ADAPTIVE_KEY_START = 0x1103, /* First hotkey code on adaptive kbd */ - TP_HKEY_EV_ADAPTIVE_KEY_END = 0x1116, /* Last hotkey code on adaptive kbd */ - - /* Extended hotkey events in 2017+ models */ - TP_HKEY_EV_EXTENDED_KEY_START = 0x1300, /* First extended hotkey code */ - TP_HKEY_EV_PRIVACYGUARD_TOGGLE = 0x130f, /* Toggle priv.guard on/off */ - TP_HKEY_EV_EXTENDED_KEY_END = 0x1319, /* Last extended hotkey code using - * hkey -> scancode translation for - * compat. Later codes are entered - * directly in the sparse-keymap. - */ - TP_HKEY_EV_AMT_TOGGLE = 0x131a, /* Toggle AMT on/off */ - TP_HKEY_EV_CAMERASHUTTER_TOGGLE = 0x131b, /* Toggle Camera Shutter */ - TP_HKEY_EV_DOUBLETAP_TOGGLE = 0x131c, /* Toggle trackpoint doubletap on/off */ - TP_HKEY_EV_PROFILE_TOGGLE = 0x131f, /* Toggle platform profile in 2024 systems */ - TP_HKEY_EV_PROFILE_TOGGLE2 = 0x1401, /* Toggle platform profile in 2025 + systems */ - - /* Reasons for waking up from S3/S4 */ - TP_HKEY_EV_WKUP_S3_UNDOCK = 0x2304, /* undock requested, S3 */ - TP_HKEY_EV_WKUP_S4_UNDOCK = 0x2404, /* undock requested, S4 */ - TP_HKEY_EV_WKUP_S3_BAYEJ = 0x2305, /* bay ejection req, S3 */ - TP_HKEY_EV_WKUP_S4_BAYEJ = 0x2405, /* bay ejection req, S4 */ - TP_HKEY_EV_WKUP_S3_BATLOW = 0x2313, /* battery empty, S3 */ - TP_HKEY_EV_WKUP_S4_BATLOW = 0x2413, /* battery empty, S4 */ - - /* Auto-sleep after eject request */ - TP_HKEY_EV_BAYEJ_ACK = 0x3003, /* bay ejection complete */ - TP_HKEY_EV_UNDOCK_ACK = 0x4003, /* undock complete */ - - /* Misc bay events */ - TP_HKEY_EV_OPTDRV_EJ = 0x3006, /* opt. drive tray ejected */ - TP_HKEY_EV_HOTPLUG_DOCK = 0x4010, /* docked into hotplug dock - or port replicator */ - TP_HKEY_EV_HOTPLUG_UNDOCK = 0x4011, /* undocked from hotplug - dock or port replicator */ - /* - * Thinkpad X1 Tablet series devices emit 0x4012 and 0x4013 - * when keyboard cover is attached, detached or folded onto the back - */ - TP_HKEY_EV_KBD_COVER_ATTACH = 0x4012, /* keyboard cover attached */ - TP_HKEY_EV_KBD_COVER_DETACH = 0x4013, /* keyboard cover detached or folded back */ - - /* User-interface events */ - TP_HKEY_EV_LID_CLOSE = 0x5001, /* laptop lid closed */ - TP_HKEY_EV_LID_OPEN = 0x5002, /* laptop lid opened */ - TP_HKEY_EV_TABLET_TABLET = 0x5009, /* tablet swivel up */ - TP_HKEY_EV_TABLET_NOTEBOOK = 0x500a, /* tablet swivel down */ - TP_HKEY_EV_TABLET_CHANGED = 0x60c0, /* X1 Yoga (2016): - * enter/leave tablet mode - */ - TP_HKEY_EV_PEN_INSERTED = 0x500b, /* tablet pen inserted */ - TP_HKEY_EV_PEN_REMOVED = 0x500c, /* tablet pen removed */ - TP_HKEY_EV_BRGHT_CHANGED = 0x5010, /* backlight control event */ - - /* Key-related user-interface events */ - TP_HKEY_EV_KEY_NUMLOCK = 0x6000, /* NumLock key pressed */ - TP_HKEY_EV_KEY_FN = 0x6005, /* Fn key pressed? E420 */ - TP_HKEY_EV_KEY_FN_ESC = 0x6060, /* Fn+Esc key pressed X240 */ - - /* Thermal events */ - TP_HKEY_EV_ALARM_BAT_HOT = 0x6011, /* battery too hot */ - TP_HKEY_EV_ALARM_BAT_XHOT = 0x6012, /* battery critically hot */ - TP_HKEY_EV_ALARM_BAT_LIM_CHANGE = 0x6013, /* battery charge limit changed*/ - TP_HKEY_EV_ALARM_SENSOR_HOT = 0x6021, /* sensor too hot */ - TP_HKEY_EV_ALARM_SENSOR_XHOT = 0x6022, /* sensor critically hot */ - TP_HKEY_EV_THM_TABLE_CHANGED = 0x6030, /* windows; thermal table changed */ - TP_HKEY_EV_THM_CSM_COMPLETED = 0x6032, /* windows; thermal control set - * command completed. Related to - * AML DYTC */ - TP_HKEY_EV_THM_TRANSFM_CHANGED = 0x60F0, /* windows; thermal transformation - * changed. Related to AML GMTS */ - - /* AC-related events */ - TP_HKEY_EV_AC_CHANGED = 0x6040, /* AC status changed */ - - /* Further user-interface events */ - TP_HKEY_EV_PALM_DETECTED = 0x60b0, /* palm hoveres keyboard */ - TP_HKEY_EV_PALM_UNDETECTED = 0x60b1, /* palm removed */ - - /* Misc */ - TP_HKEY_EV_RFKILL_CHANGED = 0x7000, /* rfkill switch changed */ - - /* Misc2 */ - TP_HKEY_EV_TRACK_DOUBLETAP = 0x8036, /* trackpoint doubletap */ -}; - -/**************************************************************************** - * Main driver - */ - -#define TPACPI_NAME "thinkpad" -#define TPACPI_DESC "ThinkPad ACPI Extras" -#define TPACPI_FILE TPACPI_NAME "_acpi" -#define TPACPI_URL "http://ibm-acpi.sf.net/" -#define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net" - -#define TPACPI_PROC_DIR "ibm" -#define TPACPI_ACPI_EVENT_PREFIX "ibm" -#define TPACPI_DRVR_NAME TPACPI_FILE -#define TPACPI_DRVR_SHORTNAME "tpacpi" -#define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon" - -#define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd" -#define TPACPI_WORKQUEUE_NAME "ktpacpid" - -#define TPACPI_MAX_ACPI_ARGS 3 - -/* Debugging printk groups */ -#define TPACPI_DBG_ALL 0xffff -#define TPACPI_DBG_DISCLOSETASK 0x8000 -#define TPACPI_DBG_INIT 0x0001 -#define TPACPI_DBG_EXIT 0x0002 -#define TPACPI_DBG_RFKILL 0x0004 -#define TPACPI_DBG_HKEY 0x0008 -#define TPACPI_DBG_FAN 0x0010 -#define TPACPI_DBG_BRGHT 0x0020 -#define TPACPI_DBG_MIXER 0x0040 - -#define FAN_NOT_PRESENT 65535 - -/**************************************************************************** - * Driver-wide structs and misc. variables - */ - -struct ibm_struct; - -struct tp_acpi_drv_struct { - const struct acpi_device_id *hid; - struct acpi_driver *driver; - - void (*notify) (struct ibm_struct *, u32); - acpi_handle *handle; - u32 type; - struct acpi_device *device; -}; - -struct ibm_struct { - char *name; - - int (*read) (struct seq_file *); - int (*write) (char *); - void (*exit) (void); - void (*resume) (void); - void (*suspend) (void); - void (*shutdown) (void); - - struct list_head all_drivers; - - struct tp_acpi_drv_struct *acpi; - - struct { - u8 acpi_driver_registered:1; - u8 acpi_notify_installed:1; - u8 proc_created:1; - u8 init_called:1; - u8 experimental:1; - } flags; -}; - -struct ibm_init_struct { - char param[32]; - - int (*init) (struct ibm_init_struct *); - umode_t base_procfs_mode; - struct ibm_struct *data; -}; - -/* DMI Quirks */ -struct quirk_entry { - bool btusb_bug; -}; - -static struct quirk_entry quirk_btusb_bug = { - .btusb_bug = true, -}; - -static struct { - u32 bluetooth:1; - u32 hotkey:1; - u32 hotkey_mask:1; - u32 hotkey_wlsw:1; - enum { - TP_HOTKEY_TABLET_NONE = 0, - TP_HOTKEY_TABLET_USES_MHKG, - TP_HOTKEY_TABLET_USES_GMMS, - } hotkey_tablet; - u32 kbdlight:1; - u32 light:1; - u32 light_status:1; - u32 bright_acpimode:1; - u32 bright_unkfw:1; - u32 wan:1; - u32 uwb:1; - u32 fan_ctrl_status_undef:1; - u32 second_fan:1; - u32 second_fan_ctl:1; - u32 beep_needs_two_args:1; - u32 mixer_no_level_control:1; - u32 battery_force_primary:1; - u32 platform_drv_registered:1; - u32 hotkey_poll_active:1; - u32 has_adaptive_kbd:1; - u32 kbd_lang:1; - u32 trackpoint_doubletap:1; - struct quirk_entry *quirks; -} tp_features; - -static struct { - u16 hotkey_mask_ff:1; - u16 volume_ctrl_forbidden:1; -} tp_warned; - -struct thinkpad_id_data { - unsigned int vendor; /* ThinkPad vendor: - * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */ - - char *bios_version_str; /* Something like 1ZET51WW (1.03z) */ - char *ec_version_str; /* Something like 1ZHT51WW-1.04a */ - - u32 bios_model; /* 1Y = 0x3159, 0 = unknown */ - u32 ec_model; - u16 bios_release; /* 1ZETK1WW = 0x4b31, 0 = unknown */ - u16 ec_release; - - char *model_str; /* ThinkPad T43 */ - char *nummodel_str; /* 9384A9C for a 9384-A9C model */ -}; -static struct thinkpad_id_data thinkpad_id; - -static enum { - TPACPI_LIFE_INIT = 0, - TPACPI_LIFE_RUNNING, - TPACPI_LIFE_EXITING, -} tpacpi_lifecycle; - -static int experimental; -static u32 dbg_level; - -static struct workqueue_struct *tpacpi_wq; - -enum led_status_t { - TPACPI_LED_OFF = 0, - TPACPI_LED_ON, - TPACPI_LED_BLINK, -}; - -/* tpacpi LED class */ -struct tpacpi_led_classdev { - struct led_classdev led_classdev; - int led; -}; - -/* brightness level capabilities */ -static unsigned int bright_maxlvl; /* 0 = unknown */ - -#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES -static int dbg_wlswemul; -static bool tpacpi_wlsw_emulstate; -static int dbg_bluetoothemul; -static bool tpacpi_bluetooth_emulstate; -static int dbg_wwanemul; -static bool tpacpi_wwan_emulstate; -static int dbg_uwbemul; -static bool tpacpi_uwb_emulstate; -#endif - - -/************************************************************************* - * Debugging helpers - */ - -#define dbg_printk(a_dbg_level, format, arg...) \ -do { \ - if (dbg_level & (a_dbg_level)) \ - printk(KERN_DEBUG pr_fmt("%s: " format), \ - __func__, ##arg); \ -} while (0) - -#ifdef CONFIG_THINKPAD_ACPI_DEBUG -#define vdbg_printk dbg_printk -static const char *str_supported(int is_supported); -#else -static inline const char *str_supported(int is_supported) { return ""; } -#define vdbg_printk(a_dbg_level, format, arg...) \ - do { if (0) no_printk(format, ##arg); } while (0) -#endif - -static void tpacpi_log_usertask(const char * const what) -{ - printk(KERN_DEBUG pr_fmt("%s: access by process with PID %d\n"), - what, task_tgid_vnr(current)); -} - -#define tpacpi_disclose_usertask(what, format, arg...) \ -do { \ - if (unlikely((dbg_level & TPACPI_DBG_DISCLOSETASK) && \ - (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \ - printk(KERN_DEBUG pr_fmt("%s: PID %d: " format), \ - what, task_tgid_vnr(current), ## arg); \ - } \ -} while (0) - -/* - * Quirk handling helpers - * - * ThinkPad IDs and versions seen in the field so far are - * two or three characters from the set [0-9A-Z], i.e. base 36. - * - * We use values well outside that range as specials. - */ - -#define TPACPI_MATCH_ANY 0xffffffffU -#define TPACPI_MATCH_ANY_VERSION 0xffffU -#define TPACPI_MATCH_UNKNOWN 0U - -/* TPID('1', 'Y') == 0x3159 */ -#define TPID(__c1, __c2) (((__c1) << 8) | (__c2)) -#define TPID3(__c1, __c2, __c3) (((__c1) << 16) | ((__c2) << 8) | (__c3)) -#define TPVER TPID - -#define TPACPI_Q_IBM(__id1, __id2, __quirk) \ - { .vendor = PCI_VENDOR_ID_IBM, \ - .bios = TPID(__id1, __id2), \ - .ec = TPACPI_MATCH_ANY, \ - .quirks = (__quirk) } - -#define TPACPI_Q_LNV(__id1, __id2, __quirk) \ - { .vendor = PCI_VENDOR_ID_LENOVO, \ - .bios = TPID(__id1, __id2), \ - .ec = TPACPI_MATCH_ANY, \ - .quirks = (__quirk) } - -#define TPACPI_Q_LNV3(__id1, __id2, __id3, __quirk) \ - { .vendor = PCI_VENDOR_ID_LENOVO, \ - .bios = TPID3(__id1, __id2, __id3), \ - .ec = TPACPI_MATCH_ANY, \ - .quirks = (__quirk) } - -#define TPACPI_QEC_IBM(__id1, __id2, __quirk) \ - { .vendor = PCI_VENDOR_ID_IBM, \ - .bios = TPACPI_MATCH_ANY, \ - .ec = TPID(__id1, __id2), \ - .quirks = (__quirk) } - -#define TPACPI_QEC_LNV(__id1, __id2, __quirk) \ - { .vendor = PCI_VENDOR_ID_LENOVO, \ - .bios = TPACPI_MATCH_ANY, \ - .ec = TPID(__id1, __id2), \ - .quirks = (__quirk) } - -struct tpacpi_quirk { - unsigned int vendor; - u32 bios; - u32 ec; - unsigned long quirks; -}; - -/** - * tpacpi_check_quirks() - search BIOS/EC version on a list - * @qlist: array of &struct tpacpi_quirk - * @qlist_size: number of elements in @qlist - * - * Iterates over a quirks list until one is found that matches the - * ThinkPad's vendor, BIOS and EC model. - * - * Returns: %0 if nothing matches, otherwise returns the quirks field of - * the matching &struct tpacpi_quirk entry. - * - * The match criteria is: vendor, ec and bios must match. - */ -static unsigned long __init tpacpi_check_quirks( - const struct tpacpi_quirk *qlist, - unsigned int qlist_size) -{ - while (qlist_size) { - if ((qlist->vendor == thinkpad_id.vendor || - qlist->vendor == TPACPI_MATCH_ANY) && - (qlist->bios == thinkpad_id.bios_model || - qlist->bios == TPACPI_MATCH_ANY) && - (qlist->ec == thinkpad_id.ec_model || - qlist->ec == TPACPI_MATCH_ANY)) - return qlist->quirks; - - qlist_size--; - qlist++; - } - return 0; -} - -static inline bool __pure __init tpacpi_is_lenovo(void) -{ - return thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO; -} - -static inline bool __pure __init tpacpi_is_ibm(void) -{ - return thinkpad_id.vendor == PCI_VENDOR_ID_IBM; -} - -/**************************************************************************** - **************************************************************************** - * - * ACPI Helpers and device model - * - **************************************************************************** - ****************************************************************************/ - -/************************************************************************* - * ACPI basic handles - */ - -static acpi_handle root_handle; -static acpi_handle ec_handle; - -#define TPACPI_HANDLE(object, parent, paths...) \ - static acpi_handle object##_handle; \ - static const acpi_handle * const object##_parent __initconst = \ - &parent##_handle; \ - static char *object##_paths[] __initdata = { paths } - -TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */ -TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */ - -TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */ - /* T4x, X31, X40 */ - "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */ - "\\CMS", /* R40, R40e */ - ); /* all others */ - -TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */ - "^HKEY", /* R30, R31 */ - "HKEY", /* all others */ - ); /* 570 */ - -/************************************************************************* - * ACPI helpers - */ - -static int acpi_evalf(acpi_handle handle, - int *res, char *method, char *fmt, ...) -{ - char *fmt0 = fmt; - struct acpi_object_list params; - union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS]; - struct acpi_buffer result, *resultp; - union acpi_object out_obj; - acpi_status status; - va_list ap; - char res_type; - int success; - int quiet; - - if (!*fmt) { - pr_err("acpi_evalf() called with empty format\n"); - return 0; - } - - if (*fmt == 'q') { - quiet = 1; - fmt++; - } else - quiet = 0; - - res_type = *(fmt++); - - params.count = 0; - params.pointer = &in_objs[0]; - - va_start(ap, fmt); - while (*fmt) { - char c = *(fmt++); - switch (c) { - case 'd': /* int */ - in_objs[params.count].integer.value = va_arg(ap, int); - in_objs[params.count++].type = ACPI_TYPE_INTEGER; - break; - /* add more types as needed */ - default: - pr_err("acpi_evalf() called with invalid format character '%c'\n", - c); - va_end(ap); - return 0; - } - } - va_end(ap); - - if (res_type != 'v') { - result.length = sizeof(out_obj); - result.pointer = &out_obj; - resultp = &result; - } else - resultp = NULL; - - status = acpi_evaluate_object(handle, method, ¶ms, resultp); - - switch (res_type) { - case 'd': /* int */ - success = (status == AE_OK && - out_obj.type == ACPI_TYPE_INTEGER); - if (success && res) - *res = out_obj.integer.value; - break; - case 'v': /* void */ - success = status == AE_OK; - break; - /* add more types as needed */ - default: - pr_err("acpi_evalf() called with invalid format character '%c'\n", - res_type); - return 0; - } - - if (!success && !quiet) - pr_err("acpi_evalf(%s, %s, ...) failed: %s\n", - method, fmt0, acpi_format_exception(status)); - - return success; -} - -static int acpi_ec_read(int i, u8 *p) -{ - int v; - - if (ecrd_handle) { - if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i)) - return 0; - *p = v; - } else { - if (ec_read(i, p) < 0) - return 0; - } - - return 1; -} - -static int acpi_ec_write(int i, u8 v) -{ - if (ecwr_handle) { - if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v)) - return 0; - } else { - if (ec_write(i, v) < 0) - return 0; - } - - return 1; -} - -static int issue_thinkpad_cmos_command(int cmos_cmd) -{ - if (!cmos_handle) - return -ENXIO; - - if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd)) - return -EIO; - - return 0; -} - -/************************************************************************* - * ACPI device model - */ - -#define TPACPI_ACPIHANDLE_INIT(object) \ - drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \ - object##_paths, ARRAY_SIZE(object##_paths)) - -static void __init drv_acpi_handle_init(const char *name, - acpi_handle *handle, const acpi_handle parent, - char **paths, const int num_paths) -{ - int i; - acpi_status status; - - vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n", - name); - - for (i = 0; i < num_paths; i++) { - status = acpi_get_handle(parent, paths[i], handle); - if (ACPI_SUCCESS(status)) { - dbg_printk(TPACPI_DBG_INIT, - "Found ACPI handle %s for %s\n", - paths[i], name); - return; - } - } - - vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n", - name); - *handle = NULL; -} - -static acpi_status __init tpacpi_acpi_handle_locate_callback(acpi_handle handle, - u32 level, void *context, void **return_value) -{ - if (!strcmp(context, "video")) { - struct acpi_device *dev = acpi_fetch_acpi_dev(handle); - - if (!dev || strcmp(ACPI_VIDEO_HID, acpi_device_hid(dev))) - return AE_OK; - } - - *(acpi_handle *)return_value = handle; - - return AE_CTRL_TERMINATE; -} - -static void __init tpacpi_acpi_handle_locate(const char *name, - const char *hid, - acpi_handle *handle) -{ - acpi_status status; - acpi_handle device_found; - - BUG_ON(!name || !handle); - vdbg_printk(TPACPI_DBG_INIT, - "trying to locate ACPI handle for %s, using HID %s\n", - name, hid ? hid : "NULL"); - - memset(&device_found, 0, sizeof(device_found)); - status = acpi_get_devices(hid, tpacpi_acpi_handle_locate_callback, - (void *)name, &device_found); - - *handle = NULL; - - if (ACPI_SUCCESS(status)) { - *handle = device_found; - dbg_printk(TPACPI_DBG_INIT, - "Found ACPI handle for %s\n", name); - } else { - vdbg_printk(TPACPI_DBG_INIT, - "Could not locate an ACPI handle for %s: %s\n", - name, acpi_format_exception(status)); - } -} - -static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data) -{ - struct ibm_struct *ibm = data; - - if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) - return; - - if (!ibm || !ibm->acpi || !ibm->acpi->notify) - return; - - ibm->acpi->notify(ibm, event); -} - -static int __init setup_acpi_notify(struct ibm_struct *ibm) -{ - acpi_status status; - - BUG_ON(!ibm->acpi); - - if (!*ibm->acpi->handle) - return 0; - - vdbg_printk(TPACPI_DBG_INIT, - "setting up ACPI notify for %s\n", ibm->name); - - ibm->acpi->device = acpi_fetch_acpi_dev(*ibm->acpi->handle); - if (!ibm->acpi->device) { - pr_err("acpi_fetch_acpi_dev(%s) failed\n", ibm->name); - return -ENODEV; - } - - ibm->acpi->device->driver_data = ibm; - scnprintf(acpi_device_class(ibm->acpi->device), - sizeof(acpi_device_class(ibm->acpi->device)), - "%s/%s", TPACPI_ACPI_EVENT_PREFIX, ibm->name); - - status = acpi_install_notify_handler(*ibm->acpi->handle, - ibm->acpi->type, dispatch_acpi_notify, ibm); - if (ACPI_FAILURE(status)) { - if (status == AE_ALREADY_EXISTS) { - pr_notice("another device driver is already handling %s events\n", - ibm->name); - } else { - pr_err("acpi_install_notify_handler(%s) failed: %s\n", - ibm->name, acpi_format_exception(status)); - } - return -ENODEV; - } - ibm->flags.acpi_notify_installed = 1; - return 0; -} - -static int __init tpacpi_device_add(struct acpi_device *device) -{ - return 0; -} - -static int __init register_tpacpi_subdriver(struct ibm_struct *ibm) -{ - int rc; - - dbg_printk(TPACPI_DBG_INIT, - "registering %s as an ACPI driver\n", ibm->name); - - BUG_ON(!ibm->acpi); - - ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL); - if (!ibm->acpi->driver) { - pr_err("failed to allocate memory for ibm->acpi->driver\n"); - return -ENOMEM; - } - - sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name); - ibm->acpi->driver->ids = ibm->acpi->hid; - - ibm->acpi->driver->ops.add = &tpacpi_device_add; - - rc = acpi_bus_register_driver(ibm->acpi->driver); - if (rc < 0) { - pr_err("acpi_bus_register_driver(%s) failed: %d\n", - ibm->name, rc); - kfree(ibm->acpi->driver); - ibm->acpi->driver = NULL; - } else if (!rc) - ibm->flags.acpi_driver_registered = 1; - - return rc; -} - - -/**************************************************************************** - **************************************************************************** - * - * Procfs Helpers - * - **************************************************************************** - ****************************************************************************/ - -static int dispatch_proc_show(struct seq_file *m, void *v) -{ - struct ibm_struct *ibm = m->private; - - if (!ibm || !ibm->read) - return -EINVAL; - return ibm->read(m); -} - -static int dispatch_proc_open(struct inode *inode, struct file *file) -{ - return single_open(file, dispatch_proc_show, pde_data(inode)); -} - -static ssize_t dispatch_proc_write(struct file *file, - const char __user *userbuf, - size_t count, loff_t *pos) -{ - struct ibm_struct *ibm = pde_data(file_inode(file)); - char *kernbuf; - int ret; - - if (!ibm || !ibm->write) - return -EINVAL; - if (count > PAGE_SIZE - 1) - return -EINVAL; - - kernbuf = memdup_user_nul(userbuf, count); - if (IS_ERR(kernbuf)) - return PTR_ERR(kernbuf); - ret = ibm->write(kernbuf); - if (ret == 0) - ret = count; - - kfree(kernbuf); - - return ret; -} - -static const struct proc_ops dispatch_proc_ops = { - .proc_open = dispatch_proc_open, - .proc_read = seq_read, - .proc_lseek = seq_lseek, - .proc_release = single_release, - .proc_write = dispatch_proc_write, -}; - -/**************************************************************************** - **************************************************************************** - * - * Device model: input, hwmon and platform - * - **************************************************************************** - ****************************************************************************/ - -static struct platform_device *tpacpi_pdev; -static struct platform_device *tpacpi_sensors_pdev; -static struct device *tpacpi_hwmon; -static struct device *tpacpi_pprof; -static struct input_dev *tpacpi_inputdev; -static struct mutex tpacpi_inputdev_send_mutex; -static LIST_HEAD(tpacpi_all_drivers); - -#ifdef CONFIG_PM_SLEEP -static int tpacpi_suspend_handler(struct device *dev) -{ - struct ibm_struct *ibm, *itmp; - - list_for_each_entry_safe(ibm, itmp, - &tpacpi_all_drivers, - all_drivers) { - if (ibm->suspend) - (ibm->suspend)(); - } - - return 0; -} - -static int tpacpi_resume_handler(struct device *dev) -{ - struct ibm_struct *ibm, *itmp; - - list_for_each_entry_safe(ibm, itmp, - &tpacpi_all_drivers, - all_drivers) { - if (ibm->resume) - (ibm->resume)(); - } - - return 0; -} -#endif - -static SIMPLE_DEV_PM_OPS(tpacpi_pm, - tpacpi_suspend_handler, tpacpi_resume_handler); - -static void tpacpi_shutdown_handler(struct platform_device *pdev) -{ - struct ibm_struct *ibm, *itmp; - - list_for_each_entry_safe(ibm, itmp, - &tpacpi_all_drivers, - all_drivers) { - if (ibm->shutdown) - (ibm->shutdown)(); - } -} - -/************************************************************************* - * sysfs support helpers - */ - -static int parse_strtoul(const char *buf, - unsigned long max, unsigned long *value) -{ - char *endp; - - *value = simple_strtoul(skip_spaces(buf), &endp, 0); - endp = skip_spaces(endp); - if (*endp || *value > max) - return -EINVAL; - - return 0; -} - -static void tpacpi_disable_brightness_delay(void) -{ - if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0)) - pr_notice("ACPI backlight control delay disabled\n"); -} - -static void printk_deprecated_attribute(const char * const what, - const char * const details) -{ - tpacpi_log_usertask("deprecated sysfs attribute"); - pr_warn("WARNING: sysfs attribute %s is deprecated and will be removed. %s\n", - what, details); -} - -/************************************************************************* - * rfkill and radio control support helpers - */ - -/* - * ThinkPad-ACPI firmware handling model: - * - * WLSW (master wireless switch) is event-driven, and is common to all - * firmware-controlled radios. It cannot be controlled, just monitored, - * as expected. It overrides all radio state in firmware - * - * The kernel, a masked-off hotkey, and WLSW can change the radio state - * (TODO: verify how WLSW interacts with the returned radio state). - * - * The only time there are shadow radio state changes, is when - * masked-off hotkeys are used. - */ - -/* - * Internal driver API for radio state: - * - * int: < 0 = error, otherwise enum tpacpi_rfkill_state - * bool: true means radio blocked (off) - */ -enum tpacpi_rfkill_state { - TPACPI_RFK_RADIO_OFF = 0, - TPACPI_RFK_RADIO_ON -}; - -/* rfkill switches */ -enum tpacpi_rfk_id { - TPACPI_RFK_BLUETOOTH_SW_ID = 0, - TPACPI_RFK_WWAN_SW_ID, - TPACPI_RFK_UWB_SW_ID, - TPACPI_RFK_SW_MAX -}; - -static const char *tpacpi_rfkill_names[] = { - [TPACPI_RFK_BLUETOOTH_SW_ID] = "bluetooth", - [TPACPI_RFK_WWAN_SW_ID] = "wwan", - [TPACPI_RFK_UWB_SW_ID] = "uwb", - [TPACPI_RFK_SW_MAX] = NULL -}; - -/* ThinkPad-ACPI rfkill subdriver */ -struct tpacpi_rfk { - struct rfkill *rfkill; - enum tpacpi_rfk_id id; - const struct tpacpi_rfk_ops *ops; -}; - -struct tpacpi_rfk_ops { - /* firmware interface */ - int (*get_status)(void); - int (*set_status)(const enum tpacpi_rfkill_state); -}; - -static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX]; - -/* Query FW and update rfkill sw state for a given rfkill switch */ -static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk *tp_rfk) -{ - int status; - - if (!tp_rfk) - return -ENODEV; - - status = (tp_rfk->ops->get_status)(); - if (status < 0) - return status; - - rfkill_set_sw_state(tp_rfk->rfkill, - (status == TPACPI_RFK_RADIO_OFF)); - - return status; -} - -/* - * Sync the HW-blocking state of all rfkill switches, - * do notice it causes the rfkill core to schedule uevents - */ -static void tpacpi_rfk_update_hwblock_state(bool blocked) -{ - unsigned int i; - struct tpacpi_rfk *tp_rfk; - - for (i = 0; i < TPACPI_RFK_SW_MAX; i++) { - tp_rfk = tpacpi_rfkill_switches[i]; - if (tp_rfk) { - if (rfkill_set_hw_state(tp_rfk->rfkill, - blocked)) { - /* ignore -- we track sw block */ - } - } - } -} - -/* Call to get the WLSW state from the firmware */ -static int hotkey_get_wlsw(void); - -/* Call to query WLSW state and update all rfkill switches */ -static bool tpacpi_rfk_check_hwblock_state(void) -{ - int res = hotkey_get_wlsw(); - int hw_blocked; - - /* When unknown or unsupported, we have to assume it is unblocked */ - if (res < 0) - return false; - - hw_blocked = (res == TPACPI_RFK_RADIO_OFF); - tpacpi_rfk_update_hwblock_state(hw_blocked); - - return hw_blocked; -} - -static int tpacpi_rfk_hook_set_block(void *data, bool blocked) -{ - struct tpacpi_rfk *tp_rfk = data; - int res; - - dbg_printk(TPACPI_DBG_RFKILL, - "request to change radio state to %s\n", - blocked ? "blocked" : "unblocked"); - - /* try to set radio state */ - res = (tp_rfk->ops->set_status)(blocked ? - TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON); - - /* and update the rfkill core with whatever the FW really did */ - tpacpi_rfk_update_swstate(tp_rfk); - - return (res < 0) ? res : 0; -} - -static const struct rfkill_ops tpacpi_rfk_rfkill_ops = { - .set_block = tpacpi_rfk_hook_set_block, -}; - -static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id, - const struct tpacpi_rfk_ops *tp_rfkops, - const enum rfkill_type rfktype, - const char *name, - const bool set_default) -{ - struct tpacpi_rfk *atp_rfk; - int res; - bool sw_state = false; - bool hw_state; - int sw_status; - - BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]); - - atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL); - if (atp_rfk) - atp_rfk->rfkill = rfkill_alloc(name, - &tpacpi_pdev->dev, - rfktype, - &tpacpi_rfk_rfkill_ops, - atp_rfk); - if (!atp_rfk || !atp_rfk->rfkill) { - pr_err("failed to allocate memory for rfkill class\n"); - kfree(atp_rfk); - return -ENOMEM; - } - - atp_rfk->id = id; - atp_rfk->ops = tp_rfkops; - - sw_status = (tp_rfkops->get_status)(); - if (sw_status < 0) { - pr_err("failed to read initial state for %s, error %d\n", - name, sw_status); - } else { - sw_state = (sw_status == TPACPI_RFK_RADIO_OFF); - if (set_default) { - /* try to keep the initial state, since we ask the - * firmware to preserve it across S5 in NVRAM */ - rfkill_init_sw_state(atp_rfk->rfkill, sw_state); - } - } - hw_state = tpacpi_rfk_check_hwblock_state(); - rfkill_set_hw_state(atp_rfk->rfkill, hw_state); - - res = rfkill_register(atp_rfk->rfkill); - if (res < 0) { - pr_err("failed to register %s rfkill switch: %d\n", name, res); - rfkill_destroy(atp_rfk->rfkill); - kfree(atp_rfk); - return res; - } - - tpacpi_rfkill_switches[id] = atp_rfk; - - pr_info("rfkill switch %s: radio is %sblocked\n", - name, (sw_state || hw_state) ? "" : "un"); - return 0; -} - -static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id) -{ - struct tpacpi_rfk *tp_rfk; - - BUG_ON(id >= TPACPI_RFK_SW_MAX); - - tp_rfk = tpacpi_rfkill_switches[id]; - if (tp_rfk) { - rfkill_unregister(tp_rfk->rfkill); - rfkill_destroy(tp_rfk->rfkill); - tpacpi_rfkill_switches[id] = NULL; - kfree(tp_rfk); - } -} - -static void printk_deprecated_rfkill_attribute(const char * const what) -{ - printk_deprecated_attribute(what, - "Please switch to generic rfkill before year 2010"); -} - -/* sysfs <radio> enable ------------------------------------------------ */ -static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id, - struct device_attribute *attr, - char *buf) -{ - int status; - - printk_deprecated_rfkill_attribute(attr->attr.name); - - /* This is in the ABI... */ - if (tpacpi_rfk_check_hwblock_state()) { - status = TPACPI_RFK_RADIO_OFF; - } else { - status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); - if (status < 0) - return status; - } - - return sysfs_emit(buf, "%d\n", - (status == TPACPI_RFK_RADIO_ON) ? 1 : 0); -} - -static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id, - struct device_attribute *attr, - const char *buf, size_t count) -{ - unsigned long t; - int res; - - printk_deprecated_rfkill_attribute(attr->attr.name); - - if (parse_strtoul(buf, 1, &t)) - return -EINVAL; - - tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t); - - /* This is in the ABI... */ - if (tpacpi_rfk_check_hwblock_state() && !!t) - return -EPERM; - - res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ? - TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF); - tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); - - return (res < 0) ? res : count; -} - -/* procfs -------------------------------------------------------------- */ -static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, struct seq_file *m) -{ - if (id >= TPACPI_RFK_SW_MAX) - seq_printf(m, "status:\t\tnot supported\n"); - else { - int status; - - /* This is in the ABI... */ - if (tpacpi_rfk_check_hwblock_state()) { - status = TPACPI_RFK_RADIO_OFF; - } else { - status = tpacpi_rfk_update_swstate( - tpacpi_rfkill_switches[id]); - if (status < 0) - return status; - } - - seq_printf(m, "status:\t\t%s\n", str_enabled_disabled(status == TPACPI_RFK_RADIO_ON)); - seq_printf(m, "commands:\tenable, disable\n"); - } - - return 0; -} - -static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf) -{ - char *cmd; - int status = -1; - int res = 0; - - if (id >= TPACPI_RFK_SW_MAX) - return -ENODEV; - - while ((cmd = strsep(&buf, ","))) { - if (strstarts(cmd, "enable")) - status = TPACPI_RFK_RADIO_ON; - else if (strstarts(cmd, "disable")) - status = TPACPI_RFK_RADIO_OFF; - else - return -EINVAL; - } - - if (status != -1) { - tpacpi_disclose_usertask("procfs", "attempt to %s %s\n", - str_enable_disable(status == TPACPI_RFK_RADIO_ON), - tpacpi_rfkill_names[id]); - res = (tpacpi_rfkill_switches[id]->ops->set_status)(status); - tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); - } - - return res; -} - -/************************************************************************* - * thinkpad-acpi driver attributes - */ - -/* interface_version --------------------------------------------------- */ -static ssize_t interface_version_show(struct device_driver *drv, char *buf) -{ - return sysfs_emit(buf, "0x%08x\n", TPACPI_SYSFS_VERSION); -} -static DRIVER_ATTR_RO(interface_version); - -/* debug_level --------------------------------------------------------- */ -static ssize_t debug_level_show(struct device_driver *drv, char *buf) -{ - return sysfs_emit(buf, "0x%04x\n", dbg_level); -} - -static ssize_t debug_level_store(struct device_driver *drv, const char *buf, - size_t count) -{ - unsigned long t; - - if (parse_strtoul(buf, 0xffff, &t)) - return -EINVAL; - - dbg_level = t; - - return count; -} -static DRIVER_ATTR_RW(debug_level); - -/* version ------------------------------------------------------------- */ -static ssize_t version_show(struct device_driver *drv, char *buf) -{ - return sysfs_emit(buf, "%s v%s\n", - TPACPI_DESC, TPACPI_VERSION); -} -static DRIVER_ATTR_RO(version); - -/* --------------------------------------------------------------------- */ - -#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES - -/* wlsw_emulstate ------------------------------------------------------ */ -static ssize_t wlsw_emulstate_show(struct device_driver *drv, char *buf) -{ - return sysfs_emit(buf, "%d\n", !!tpacpi_wlsw_emulstate); -} - -static ssize_t wlsw_emulstate_store(struct device_driver *drv, const char *buf, - size_t count) -{ - unsigned long t; - - if (parse_strtoul(buf, 1, &t)) - return -EINVAL; - - if (tpacpi_wlsw_emulstate != !!t) { - tpacpi_wlsw_emulstate = !!t; - tpacpi_rfk_update_hwblock_state(!t); /* negative logic */ - } - - return count; -} -static DRIVER_ATTR_RW(wlsw_emulstate); - -/* bluetooth_emulstate ------------------------------------------------- */ -static ssize_t bluetooth_emulstate_show(struct device_driver *drv, char *buf) -{ - return sysfs_emit(buf, "%d\n", !!tpacpi_bluetooth_emulstate); -} - -static ssize_t bluetooth_emulstate_store(struct device_driver *drv, - const char *buf, size_t count) -{ - unsigned long t; - - if (parse_strtoul(buf, 1, &t)) - return -EINVAL; - - tpacpi_bluetooth_emulstate = !!t; - - return count; -} -static DRIVER_ATTR_RW(bluetooth_emulstate); - -/* wwan_emulstate ------------------------------------------------- */ -static ssize_t wwan_emulstate_show(struct device_driver *drv, char *buf) -{ - return sysfs_emit(buf, "%d\n", !!tpacpi_wwan_emulstate); -} - -static ssize_t wwan_emulstate_store(struct device_driver *drv, const char *buf, - size_t count) -{ - unsigned long t; - - if (parse_strtoul(buf, 1, &t)) - return -EINVAL; - - tpacpi_wwan_emulstate = !!t; - - return count; -} -static DRIVER_ATTR_RW(wwan_emulstate); - -/* uwb_emulstate ------------------------------------------------- */ -static ssize_t uwb_emulstate_show(struct device_driver *drv, char *buf) -{ - return sysfs_emit(buf, "%d\n", !!tpacpi_uwb_emulstate); -} - -static ssize_t uwb_emulstate_store(struct device_driver *drv, const char *buf, - size_t count) -{ - unsigned long t; - - if (parse_strtoul(buf, 1, &t)) - return -EINVAL; - - tpacpi_uwb_emulstate = !!t; - - return count; -} -static DRIVER_ATTR_RW(uwb_emulstate); -#endif - -/************************************************************************* - * Firmware Data - */ - -/* - * Table of recommended minimum BIOS versions - * - * Reasons for listing: - * 1. Stable BIOS, listed because the unknown amount of - * bugs and bad ACPI behaviour on older versions - * - * 2. BIOS or EC fw with known bugs that trigger on Linux - * - * 3. BIOS with known reduced functionality in older versions - * - * We recommend the latest BIOS and EC version. - * We only support the latest BIOS and EC fw version as a rule. - * - * Sources: IBM ThinkPad Public Web Documents (update changelogs), - * Information from users in ThinkWiki - * - * WARNING: we use this table also to detect that the machine is - * a ThinkPad in some cases, so don't remove entries lightly. - */ - -#define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \ - { .vendor = (__v), \ - .bios = TPID(__id1, __id2), \ - .ec = TPACPI_MATCH_ANY, \ - .quirks = TPACPI_MATCH_ANY_VERSION << 16 \ - | TPVER(__bv1, __bv2) } - -#define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \ - __eid, __ev1, __ev2) \ - { .vendor = (__v), \ - .bios = TPID(__bid1, __bid2), \ - .ec = __eid, \ - .quirks = TPVER(__ev1, __ev2) << 16 \ - | TPVER(__bv1, __bv2) } - -#define TPV_QI0(__id1, __id2, __bv1, __bv2) \ - TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2) - -/* Outdated IBM BIOSes often lack the EC id string */ -#define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \ - TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \ - __bv1, __bv2, TPID(__id1, __id2), \ - __ev1, __ev2), \ - TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \ - __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \ - __ev1, __ev2) - -/* Outdated IBM BIOSes often lack the EC id string */ -#define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \ - __eid1, __eid2, __ev1, __ev2) \ - TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \ - __bv1, __bv2, TPID(__eid1, __eid2), \ - __ev1, __ev2), \ - TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \ - __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \ - __ev1, __ev2) - -#define TPV_QL0(__id1, __id2, __bv1, __bv2) \ - TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2) - -#define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \ - TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \ - __bv1, __bv2, TPID(__id1, __id2), \ - __ev1, __ev2) - -#define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \ - __eid1, __eid2, __ev1, __ev2) \ - TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \ - __bv1, __bv2, TPID(__eid1, __eid2), \ - __ev1, __ev2) - -static const struct tpacpi_quirk tpacpi_bios_version_qtable[] __initconst = { - /* Numeric models ------------------ */ - /* FW MODEL BIOS VERS */ - TPV_QI0('I', 'M', '6', '5'), /* 570 */ - TPV_QI0('I', 'U', '2', '6'), /* 570E */ - TPV_QI0('I', 'B', '5', '4'), /* 600 */ - TPV_QI0('I', 'H', '4', '7'), /* 600E */ - TPV_QI0('I', 'N', '3', '6'), /* 600E */ - TPV_QI0('I', 'T', '5', '5'), /* 600X */ - TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */ - TPV_QI0('I', 'I', '4', '2'), /* 770X */ - TPV_QI0('I', 'O', '2', '3'), /* 770Z */ - - /* A-series ------------------------- */ - /* FW MODEL BIOS VERS EC VERS */ - TPV_QI0('I', 'W', '5', '9'), /* A20m */ - TPV_QI0('I', 'V', '6', '9'), /* A20p */ - TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */ - TPV_QI0('K', 'U', '3', '6'), /* A21e */ - TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */ - TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */ - TPV_QI0('1', 'B', '1', '7'), /* A22e */ - TPV_QI0('1', '3', '2', '0'), /* A22m */ - TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */ - TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */ - TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */ - - /* G-series ------------------------- */ - /* FW MODEL BIOS VERS */ - TPV_QI0('1', 'T', 'A', '6'), /* G40 */ - TPV_QI0('1', 'X', '5', '7'), /* G41 */ - - /* R-series, T-series --------------- */ - /* FW MODEL BIOS VERS EC VERS */ - TPV_QI0('1', 'C', 'F', '0'), /* R30 */ - TPV_QI0('1', 'F', 'F', '1'), /* R31 */ - TPV_QI0('1', 'M', '9', '7'), /* R32 */ - TPV_QI0('1', 'O', '6', '1'), /* R40 */ - TPV_QI0('1', 'P', '6', '5'), /* R40 */ - TPV_QI0('1', 'S', '7', '0'), /* R40e */ - TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51, - T40/p, T41/p, T42/p (1) */ - TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */ - TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */ - TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */ - TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */ - - TPV_QI0('I', 'Y', '6', '1'), /* T20 */ - TPV_QI0('K', 'Z', '3', '4'), /* T21 */ - TPV_QI0('1', '6', '3', '2'), /* T22 */ - TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */ - TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */ - TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */ - - TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */ - TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */ - TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */ - - /* BIOS FW BIOS VERS EC FW EC VERS */ - TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */ - TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */ - - /* X-series ------------------------- */ - /* FW MODEL BIOS VERS EC VERS */ - TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */ - TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */ - TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */ - TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */ - TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */ - TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */ - TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */ - - TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */ - TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */ - - /* (0) - older versions lack DMI EC fw string and functionality */ - /* (1) - older versions known to lack functionality */ -}; - -#undef TPV_QL1 -#undef TPV_QL0 -#undef TPV_QI2 -#undef TPV_QI1 -#undef TPV_QI0 -#undef TPV_Q_X -#undef TPV_Q - -static void __init tpacpi_check_outdated_fw(void) -{ - unsigned long fwvers; - u16 ec_version, bios_version; - - fwvers = tpacpi_check_quirks(tpacpi_bios_version_qtable, - ARRAY_SIZE(tpacpi_bios_version_qtable)); - - if (!fwvers) - return; - - bios_version = fwvers & 0xffffU; - ec_version = (fwvers >> 16) & 0xffffU; - - /* note that unknown versions are set to 0x0000 and we use that */ - if ((bios_version > thinkpad_id.bios_release) || - (ec_version > thinkpad_id.ec_release && - ec_version != TPACPI_MATCH_ANY_VERSION)) { - /* - * The changelogs would let us track down the exact - * reason, but it is just too much of a pain to track - * it. We only list BIOSes that are either really - * broken, or really stable to begin with, so it is - * best if the user upgrades the firmware anyway. - */ - pr_warn("WARNING: Outdated ThinkPad BIOS/EC firmware\n"); - pr_warn("WARNING: This firmware may be missing critical bug fixes and/or important features\n"); - } -} - -static bool __init tpacpi_is_fw_known(void) -{ - return tpacpi_check_quirks(tpacpi_bios_version_qtable, - ARRAY_SIZE(tpacpi_bios_version_qtable)) != 0; -} - -/**************************************************************************** - **************************************************************************** - * - * Subdrivers - * - **************************************************************************** - ****************************************************************************/ - -/************************************************************************* - * thinkpad-acpi metadata subdriver - */ - -static int thinkpad_acpi_driver_read(struct seq_file *m) -{ - seq_printf(m, "driver:\t\t%s\n", TPACPI_DESC); - seq_printf(m, "version:\t%s\n", TPACPI_VERSION); - return 0; -} - -static struct ibm_struct thinkpad_acpi_driver_data = { - .name = "driver", - .read = thinkpad_acpi_driver_read, -}; - -/************************************************************************* - * Hotkey subdriver - */ - -/* - * ThinkPad firmware event model - * - * The ThinkPad firmware has two main event interfaces: normal ACPI - * notifications (which follow the ACPI standard), and a private event - * interface. - * - * The private event interface also issues events for the hotkeys. As - * the driver gained features, the event handling code ended up being - * built around the hotkey subdriver. This will need to be refactored - * to a more formal event API eventually. - * - * Some "hotkeys" are actually supposed to be used as event reports, - * such as "brightness has changed", "volume has changed", depending on - * the ThinkPad model and how the firmware is operating. - * - * Unlike other classes, hotkey-class events have mask/unmask control on - * non-ancient firmware. However, how it behaves changes a lot with the - * firmware model and version. - */ - -enum { /* hot key scan codes (derived from ACPI DSDT) */ - TP_ACPI_HOTKEYSCAN_FNF1 = 0, - TP_ACPI_HOTKEYSCAN_FNF2, - TP_ACPI_HOTKEYSCAN_FNF3, - TP_ACPI_HOTKEYSCAN_FNF4, - TP_ACPI_HOTKEYSCAN_FNF5, - TP_ACPI_HOTKEYSCAN_FNF6, - TP_ACPI_HOTKEYSCAN_FNF7, - TP_ACPI_HOTKEYSCAN_FNF8, - TP_ACPI_HOTKEYSCAN_FNF9, - TP_ACPI_HOTKEYSCAN_FNF10, - TP_ACPI_HOTKEYSCAN_FNF11, - TP_ACPI_HOTKEYSCAN_FNF12, - TP_ACPI_HOTKEYSCAN_FNBACKSPACE, - TP_ACPI_HOTKEYSCAN_FNINSERT, - TP_ACPI_HOTKEYSCAN_FNDELETE, - TP_ACPI_HOTKEYSCAN_FNHOME, - TP_ACPI_HOTKEYSCAN_FNEND, - TP_ACPI_HOTKEYSCAN_FNPAGEUP, - TP_ACPI_HOTKEYSCAN_FNPAGEDOWN, - TP_ACPI_HOTKEYSCAN_FNSPACE, - TP_ACPI_HOTKEYSCAN_VOLUMEUP, - TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, - TP_ACPI_HOTKEYSCAN_MUTE, - TP_ACPI_HOTKEYSCAN_THINKPAD, - TP_ACPI_HOTKEYSCAN_UNK1, - TP_ACPI_HOTKEYSCAN_UNK2, - TP_ACPI_HOTKEYSCAN_MICMUTE, - TP_ACPI_HOTKEYSCAN_UNK4, - TP_ACPI_HOTKEYSCAN_CONFIG, - TP_ACPI_HOTKEYSCAN_SEARCH, - TP_ACPI_HOTKEYSCAN_SCALE, - TP_ACPI_HOTKEYSCAN_FILE, - - /* Adaptive keyboard keycodes */ - TP_ACPI_HOTKEYSCAN_ADAPTIVE_START, /* 32 / 0x20 */ - TP_ACPI_HOTKEYSCAN_MUTE2 = TP_ACPI_HOTKEYSCAN_ADAPTIVE_START, - TP_ACPI_HOTKEYSCAN_BRIGHTNESS_ZERO, - TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL, - TP_ACPI_HOTKEYSCAN_CLOUD, - TP_ACPI_HOTKEYSCAN_UNK9, - TP_ACPI_HOTKEYSCAN_VOICE, - TP_ACPI_HOTKEYSCAN_UNK10, - TP_ACPI_HOTKEYSCAN_GESTURES, - TP_ACPI_HOTKEYSCAN_UNK11, - TP_ACPI_HOTKEYSCAN_UNK12, - TP_ACPI_HOTKEYSCAN_UNK13, - TP_ACPI_HOTKEYSCAN_CONFIG2, - TP_ACPI_HOTKEYSCAN_NEW_TAB, - TP_ACPI_HOTKEYSCAN_RELOAD, - TP_ACPI_HOTKEYSCAN_BACK, - TP_ACPI_HOTKEYSCAN_MIC_DOWN, - TP_ACPI_HOTKEYSCAN_MIC_UP, - TP_ACPI_HOTKEYSCAN_MIC_CANCELLATION, - TP_ACPI_HOTKEYSCAN_CAMERA_MODE, - TP_ACPI_HOTKEYSCAN_ROTATE_DISPLAY, - - /* Lenovo extended keymap, starting at 0x1300 */ - TP_ACPI_HOTKEYSCAN_EXTENDED_START, /* 52 / 0x34 */ - /* first new observed key (star, favorites) is 0x1311 */ - TP_ACPI_HOTKEYSCAN_STAR = 69, - TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL2, - TP_ACPI_HOTKEYSCAN_CALCULATOR, - TP_ACPI_HOTKEYSCAN_BLUETOOTH, - TP_ACPI_HOTKEYSCAN_KEYBOARD, - TP_ACPI_HOTKEYSCAN_FN_RIGHT_SHIFT, /* Used by "Lenovo Quick Clean" */ - TP_ACPI_HOTKEYSCAN_NOTIFICATION_CENTER, - TP_ACPI_HOTKEYSCAN_PICKUP_PHONE, - TP_ACPI_HOTKEYSCAN_HANGUP_PHONE, -}; - -enum { /* Keys/events available through NVRAM polling */ - TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U, - TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U, -}; - -enum { /* Positions of some of the keys in hotkey masks */ - TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7, - TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8, - TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12, - TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME, - TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND, - TP_ACPI_HKEY_KBD_LIGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP, - TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE, - TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP, - TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, - TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE, - TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD, -}; - -enum { /* NVRAM to ACPI HKEY group map */ - TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK | - TP_ACPI_HKEY_ZOOM_MASK | - TP_ACPI_HKEY_DISPSWTCH_MASK | - TP_ACPI_HKEY_HIBERNATE_MASK, - TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK | - TP_ACPI_HKEY_BRGHTDWN_MASK, - TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK | - TP_ACPI_HKEY_VOLDWN_MASK | - TP_ACPI_HKEY_MUTE_MASK, -}; - -#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL -struct tp_nvram_state { - u16 thinkpad_toggle:1; - u16 zoom_toggle:1; - u16 display_toggle:1; - u16 thinklight_toggle:1; - u16 hibernate_toggle:1; - u16 displayexp_toggle:1; - u16 display_state:1; - u16 brightness_toggle:1; - u16 volume_toggle:1; - u16 mute:1; - - u8 brightness_level; - u8 volume_level; -}; - -/* kthread for the hotkey poller */ -static struct task_struct *tpacpi_hotkey_task; - -/* - * Acquire mutex to write poller control variables as an - * atomic block. - * - * Increment hotkey_config_change when changing them if you - * want the kthread to forget old state. - * - * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END - */ -static struct mutex hotkey_thread_data_mutex; -static unsigned int hotkey_config_change; - -/* - * hotkey poller control variables - * - * Must be atomic or readers will also need to acquire mutex - * - * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END - * should be used only when the changes need to be taken as - * a block, OR when one needs to force the kthread to forget - * old state. - */ -static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */ -static unsigned int hotkey_poll_freq = 10; /* Hz */ - -#define HOTKEY_CONFIG_CRITICAL_START \ - do { \ - mutex_lock(&hotkey_thread_data_mutex); \ - hotkey_config_change++; \ - } while (0); -#define HOTKEY_CONFIG_CRITICAL_END \ - mutex_unlock(&hotkey_thread_data_mutex); - -#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ - -#define hotkey_source_mask 0U -#define HOTKEY_CONFIG_CRITICAL_START -#define HOTKEY_CONFIG_CRITICAL_END - -#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ - -static struct mutex hotkey_mutex; - -static enum { /* Reasons for waking up */ - TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */ - TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */ - TP_ACPI_WAKEUP_UNDOCK, /* Undock request */ -} hotkey_wakeup_reason; - -static int hotkey_autosleep_ack; - -static u32 hotkey_orig_mask; /* events the BIOS had enabled */ -static u32 hotkey_all_mask; /* all events supported in fw */ -static u32 hotkey_adaptive_all_mask; /* all adaptive events supported in fw */ -static u32 hotkey_reserved_mask; /* events better left disabled */ -static u32 hotkey_driver_mask; /* events needed by the driver */ -static u32 hotkey_user_mask; /* events visible to userspace */ -static u32 hotkey_acpi_mask; /* events enabled in firmware */ - -static bool tpacpi_driver_event(const unsigned int hkey_event); -static void hotkey_poll_setup(const bool may_warn); - -/* HKEY.MHKG() return bits */ -#define TP_HOTKEY_TABLET_MASK (1 << 3) -enum { - TP_ACPI_MULTI_MODE_INVALID = 0, - TP_ACPI_MULTI_MODE_UNKNOWN = 1 << 0, - TP_ACPI_MULTI_MODE_LAPTOP = 1 << 1, - TP_ACPI_MULTI_MODE_TABLET = 1 << 2, - TP_ACPI_MULTI_MODE_FLAT = 1 << 3, - TP_ACPI_MULTI_MODE_STAND = 1 << 4, - TP_ACPI_MULTI_MODE_TENT = 1 << 5, - TP_ACPI_MULTI_MODE_STAND_TENT = 1 << 6, -}; - -enum { - /* The following modes are considered tablet mode for the purpose of - * reporting the status to userspace. i.e. in all these modes it makes - * sense to disable the laptop input devices such as touchpad and - * keyboard. - */ - TP_ACPI_MULTI_MODE_TABLET_LIKE = TP_ACPI_MULTI_MODE_TABLET | - TP_ACPI_MULTI_MODE_STAND | - TP_ACPI_MULTI_MODE_TENT | - TP_ACPI_MULTI_MODE_STAND_TENT, -}; - -static int hotkey_get_wlsw(void) -{ - int status; - - if (!tp_features.hotkey_wlsw) - return -ENODEV; - -#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES - if (dbg_wlswemul) - return (tpacpi_wlsw_emulstate) ? - TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; -#endif - - if (!acpi_evalf(hkey_handle, &status, "WLSW", "d")) - return -EIO; - - return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; -} - -static int hotkey_gmms_get_tablet_mode(int s, int *has_tablet_mode) -{ - int type = (s >> 16) & 0xffff; - int value = s & 0xffff; - int mode = TP_ACPI_MULTI_MODE_INVALID; - int valid_modes = 0; - - if (has_tablet_mode) - *has_tablet_mode = 0; - - switch (type) { - case 1: - valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | - TP_ACPI_MULTI_MODE_TABLET | - TP_ACPI_MULTI_MODE_STAND_TENT; - break; - case 2: - valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | - TP_ACPI_MULTI_MODE_FLAT | - TP_ACPI_MULTI_MODE_TABLET | - TP_ACPI_MULTI_MODE_STAND | - TP_ACPI_MULTI_MODE_TENT; - break; - case 3: - valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | - TP_ACPI_MULTI_MODE_FLAT; - break; - case 4: - case 5: - /* In mode 4, FLAT is not specified as a valid mode. However, - * it can be seen at least on the X1 Yoga 2nd Generation. - */ - valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | - TP_ACPI_MULTI_MODE_FLAT | - TP_ACPI_MULTI_MODE_TABLET | - TP_ACPI_MULTI_MODE_STAND | - TP_ACPI_MULTI_MODE_TENT; - break; - default: - pr_err("Unknown multi mode status type %d with value 0x%04X, please report this to %s\n", - type, value, TPACPI_MAIL); - return 0; - } - - if (has_tablet_mode && (valid_modes & TP_ACPI_MULTI_MODE_TABLET_LIKE)) - *has_tablet_mode = 1; - - switch (value) { - case 1: - mode = TP_ACPI_MULTI_MODE_LAPTOP; - break; - case 2: - mode = TP_ACPI_MULTI_MODE_FLAT; - break; - case 3: - mode = TP_ACPI_MULTI_MODE_TABLET; - break; - case 4: - if (type == 1) - mode = TP_ACPI_MULTI_MODE_STAND_TENT; - else - mode = TP_ACPI_MULTI_MODE_STAND; - break; - case 5: - mode = TP_ACPI_MULTI_MODE_TENT; - break; - default: - if (type == 5 && value == 0xffff) { - pr_warn("Multi mode status is undetected, assuming laptop\n"); - return 0; - } - } - - if (!(mode & valid_modes)) { - pr_err("Unknown/reserved multi mode value 0x%04X for type %d, please report this to %s\n", - value, type, TPACPI_MAIL); - return 0; - } - - return !!(mode & TP_ACPI_MULTI_MODE_TABLET_LIKE); -} - -static int hotkey_get_tablet_mode(int *status) -{ - int s; - - switch (tp_features.hotkey_tablet) { - case TP_HOTKEY_TABLET_USES_MHKG: - if (!acpi_evalf(hkey_handle, &s, "MHKG", "d")) - return -EIO; - - *status = ((s & TP_HOTKEY_TABLET_MASK) != 0); - break; - case TP_HOTKEY_TABLET_USES_GMMS: - if (!acpi_evalf(hkey_handle, &s, "GMMS", "dd", 0)) - return -EIO; - - *status = hotkey_gmms_get_tablet_mode(s, NULL); - break; - default: - break; - } - - return 0; -} - -/* - * Reads current event mask from firmware, and updates - * hotkey_acpi_mask accordingly. Also resets any bits - * from hotkey_user_mask that are unavailable to be - * delivered (shadow requirement of the userspace ABI). - */ -static int hotkey_mask_get(void) -{ - lockdep_assert_held(&hotkey_mutex); - - if (tp_features.hotkey_mask) { - u32 m = 0; - - if (!acpi_evalf(hkey_handle, &m, "DHKN", "d")) - return -EIO; - - hotkey_acpi_mask = m; - } else { - /* no mask support doesn't mean no event support... */ - hotkey_acpi_mask = hotkey_all_mask; - } - - /* sync userspace-visible mask */ - hotkey_user_mask &= (hotkey_acpi_mask | hotkey_source_mask); - - return 0; -} - -static void hotkey_mask_warn_incomplete_mask(void) -{ - /* log only what the user can fix... */ - const u32 wantedmask = hotkey_driver_mask & - ~(hotkey_acpi_mask | hotkey_source_mask) & - (hotkey_all_mask | TPACPI_HKEY_NVRAM_KNOWN_MASK); - - if (wantedmask) - pr_notice("required events 0x%08x not enabled!\n", wantedmask); -} - -/* - * Set the firmware mask when supported - * - * Also calls hotkey_mask_get to update hotkey_acpi_mask. - * - * NOTE: does not set bits in hotkey_user_mask, but may reset them. - */ -static int hotkey_mask_set(u32 mask) -{ - int i; - int rc = 0; - - const u32 fwmask = mask & ~hotkey_source_mask; - - lockdep_assert_held(&hotkey_mutex); - - if (tp_features.hotkey_mask) { - for (i = 0; i < 32; i++) { - if (!acpi_evalf(hkey_handle, - NULL, "MHKM", "vdd", i + 1, - !!(mask & (1 << i)))) { - rc = -EIO; - break; - } - } - } - - /* - * We *must* make an inconditional call to hotkey_mask_get to - * refresh hotkey_acpi_mask and update hotkey_user_mask - * - * Take the opportunity to also log when we cannot _enable_ - * a given event. - */ - if (!hotkey_mask_get() && !rc && (fwmask & ~hotkey_acpi_mask)) { - pr_notice("asked for hotkey mask 0x%08x, but firmware forced it to 0x%08x\n", - fwmask, hotkey_acpi_mask); - } - - if (tpacpi_lifecycle != TPACPI_LIFE_EXITING) - hotkey_mask_warn_incomplete_mask(); - - return rc; -} - -/* - * Sets hotkey_user_mask and tries to set the firmware mask - */ -static int hotkey_user_mask_set(const u32 mask) -{ - int rc; - - lockdep_assert_held(&hotkey_mutex); - - /* Give people a chance to notice they are doing something that - * is bound to go boom on their users sooner or later */ - if (!tp_warned.hotkey_mask_ff && - (mask == 0xffff || mask == 0xffffff || - mask == 0xffffffff)) { - tp_warned.hotkey_mask_ff = 1; - pr_notice("setting the hotkey mask to 0x%08x is likely not the best way to go about it\n", - mask); - pr_notice("please consider using the driver defaults, and refer to up-to-date thinkpad-acpi documentation\n"); - } - - /* Try to enable what the user asked for, plus whatever we need. - * this syncs everything but won't enable bits in hotkey_user_mask */ - rc = hotkey_mask_set((mask | hotkey_driver_mask) & ~hotkey_source_mask); - - /* Enable the available bits in hotkey_user_mask */ - hotkey_user_mask = mask & (hotkey_acpi_mask | hotkey_source_mask); - - return rc; -} - -/* - * Sets the driver hotkey mask. - * - * Can be called even if the hotkey subdriver is inactive - */ -static int tpacpi_hotkey_driver_mask_set(const u32 mask) -{ - int rc; - - /* Do the right thing if hotkey_init has not been called yet */ - if (!tp_features.hotkey) { - hotkey_driver_mask = mask; - return 0; - } - - mutex_lock(&hotkey_mutex); - - HOTKEY_CONFIG_CRITICAL_START - hotkey_driver_mask = mask; -#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL - hotkey_source_mask |= (mask & ~hotkey_all_mask); -#endif - HOTKEY_CONFIG_CRITICAL_END - - rc = hotkey_mask_set((hotkey_acpi_mask | hotkey_driver_mask) & - ~hotkey_source_mask); - hotkey_poll_setup(true); - - mutex_unlock(&hotkey_mutex); - - return rc; -} - -static int hotkey_status_get(int *status) -{ - if (!acpi_evalf(hkey_handle, status, "DHKC", "d")) - return -EIO; - - return 0; -} - -static int hotkey_status_set(bool enable) -{ - if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0)) - return -EIO; - - return 0; -} - -static void tpacpi_input_send_tabletsw(void) -{ - int state; - - if (tp_features.hotkey_tablet && - !hotkey_get_tablet_mode(&state)) { - mutex_lock(&tpacpi_inputdev_send_mutex); - - input_report_switch(tpacpi_inputdev, - SW_TABLET_MODE, !!state); - input_sync(tpacpi_inputdev); - - mutex_unlock(&tpacpi_inputdev_send_mutex); - } -} - -#define GCES_NO_SHUTTER_DEVICE BIT(31) - -static int get_camera_shutter(void) -{ - acpi_handle gces_handle; - int output; - - if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GCES", &gces_handle))) - return -ENODEV; - - if (!acpi_evalf(gces_handle, &output, NULL, "dd", 0)) - return -EIO; - - if (output & GCES_NO_SHUTTER_DEVICE) - return -ENODEV; - - return output; -} - -static bool tpacpi_input_send_key(const u32 hkey, bool *send_acpi_ev) -{ - bool known_ev; - u32 scancode; - - if (tpacpi_driver_event(hkey)) - return true; - - /* - * Before the conversion to using the sparse-keymap helpers the driver used to - * map the hkey event codes to 0x00 - 0x4d scancodes so that a straight scancode - * indexed array could be used to map scancodes to keycodes: - * - * 0x1001 - 0x1020 -> 0x00 - 0x1f (Original ThinkPad events) - * 0x1103 - 0x1116 -> 0x20 - 0x33 (Adaptive keyboard, 2014 X1 Carbon) - * 0x1300 - 0x1319 -> 0x34 - 0x4d (Additional keys send in 2017+ models) - * - * The sparse-keymap tables still use these scancodes for these ranges to - * preserve userspace API compatibility (e.g. hwdb keymappings). - */ - if (hkey >= TP_HKEY_EV_ORIG_KEY_START && - hkey <= TP_HKEY_EV_ORIG_KEY_END) { - scancode = hkey - TP_HKEY_EV_ORIG_KEY_START; - if (!(hotkey_user_mask & (1 << scancode))) - return true; /* Not reported but still a known code */ - } else if (hkey >= TP_HKEY_EV_ADAPTIVE_KEY_START && - hkey <= TP_HKEY_EV_ADAPTIVE_KEY_END) { - scancode = hkey - TP_HKEY_EV_ADAPTIVE_KEY_START + - TP_ACPI_HOTKEYSCAN_ADAPTIVE_START; - } else if (hkey >= TP_HKEY_EV_EXTENDED_KEY_START && - hkey <= TP_HKEY_EV_EXTENDED_KEY_END) { - scancode = hkey - TP_HKEY_EV_EXTENDED_KEY_START + - TP_ACPI_HOTKEYSCAN_EXTENDED_START; - } else { - /* - * Do not send ACPI netlink events for unknown hotkeys, to - * avoid userspace starting to rely on them. Instead these - * should be added to the keymap to send evdev events. - */ - if (send_acpi_ev) - *send_acpi_ev = false; - - scancode = hkey; - } - - mutex_lock(&tpacpi_inputdev_send_mutex); - known_ev = sparse_keymap_report_event(tpacpi_inputdev, scancode, 1, true); - mutex_unlock(&tpacpi_inputdev_send_mutex); - - return known_ev; -} - -#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL -static struct tp_acpi_drv_struct ibm_hotkey_acpidriver; - -/* Do NOT call without validating scancode first */ -static void tpacpi_hotkey_send_key(unsigned int scancode) -{ - tpacpi_input_send_key(TP_HKEY_EV_ORIG_KEY_START + scancode, NULL); -} - -static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m) -{ - u8 d; - - if (m & TP_NVRAM_HKEY_GROUP_HK2) { - d = nvram_read_byte(TP_NVRAM_ADDR_HK2); - n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD); - n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM); - n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY); - n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE); - } - if (m & TP_ACPI_HKEY_KBD_LIGHT_MASK) { - d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT); - n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT); - } - if (m & TP_ACPI_HKEY_DISPXPAND_MASK) { - d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO); - n->displayexp_toggle = - !!(d & TP_NVRAM_MASK_HKT_DISPEXPND); - } - if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) { - d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); - n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) - >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; - n->brightness_toggle = - !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS); - } - if (m & TP_NVRAM_HKEY_GROUP_VOLUME) { - d = nvram_read_byte(TP_NVRAM_ADDR_MIXER); - n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME) - >> TP_NVRAM_POS_LEVEL_VOLUME; - n->mute = !!(d & TP_NVRAM_MASK_MUTE); - n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME); - } -} - -#define TPACPI_COMPARE_KEY(__scancode, __member) \ -do { \ - if ((event_mask & (1 << __scancode)) && \ - oldn->__member != newn->__member) \ - tpacpi_hotkey_send_key(__scancode); \ -} while (0) - -#define TPACPI_MAY_SEND_KEY(__scancode) \ -do { \ - if (event_mask & (1 << __scancode)) \ - tpacpi_hotkey_send_key(__scancode); \ -} while (0) - -static void issue_volchange(const unsigned int oldvol, - const unsigned int newvol, - const u32 event_mask) -{ - unsigned int i = oldvol; - - while (i > newvol) { - TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); - i--; - } - while (i < newvol) { - TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); - i++; - } -} - -static void issue_brightnesschange(const unsigned int oldbrt, - const unsigned int newbrt, - const u32 event_mask) -{ - unsigned int i = oldbrt; - - while (i > newbrt) { - TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); - i--; - } - while (i < newbrt) { - TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); - i++; - } -} - -static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn, - struct tp_nvram_state *newn, - const u32 event_mask) -{ - - TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle); - TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle); - TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle); - TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle); - - TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle); - - TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle); - - /* - * Handle volume - * - * This code is supposed to duplicate the IBM firmware behaviour: - * - Pressing MUTE issues mute hotkey message, even when already mute - * - Pressing Volume up/down issues volume up/down hotkey messages, - * even when already at maximum or minimum volume - * - The act of unmuting issues volume up/down notification, - * depending which key was used to unmute - * - * We are constrained to what the NVRAM can tell us, which is not much - * and certainly not enough if more than one volume hotkey was pressed - * since the last poll cycle. - * - * Just to make our life interesting, some newer Lenovo ThinkPads have - * bugs in the BIOS and may fail to update volume_toggle properly. - */ - if (newn->mute) { - /* muted */ - if (!oldn->mute || - oldn->volume_toggle != newn->volume_toggle || - oldn->volume_level != newn->volume_level) { - /* recently muted, or repeated mute keypress, or - * multiple presses ending in mute */ - issue_volchange(oldn->volume_level, newn->volume_level, - event_mask); - TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE); - } - } else { - /* unmute */ - if (oldn->mute) { - /* recently unmuted, issue 'unmute' keypress */ - TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); - } - if (oldn->volume_level != newn->volume_level) { - issue_volchange(oldn->volume_level, newn->volume_level, - event_mask); - } else if (oldn->volume_toggle != newn->volume_toggle) { - /* repeated vol up/down keypress at end of scale ? */ - if (newn->volume_level == 0) - TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); - else if (newn->volume_level >= TP_NVRAM_LEVEL_VOLUME_MAX) - TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); - } - } - - /* handle brightness */ - if (oldn->brightness_level != newn->brightness_level) { - issue_brightnesschange(oldn->brightness_level, - newn->brightness_level, event_mask); - } else if (oldn->brightness_toggle != newn->brightness_toggle) { - /* repeated key presses that didn't change state */ - if (newn->brightness_level == 0) - TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); - else if (newn->brightness_level >= bright_maxlvl - && !tp_features.bright_unkfw) - TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); - } - -#undef TPACPI_COMPARE_KEY -#undef TPACPI_MAY_SEND_KEY -} - -/* - * Polling driver - * - * We track all events in hotkey_source_mask all the time, since - * most of them are edge-based. We only issue those requested by - * hotkey_user_mask or hotkey_driver_mask, though. - */ -static int hotkey_kthread(void *data) -{ - struct tp_nvram_state s[2] = { 0 }; - u32 poll_mask, event_mask; - unsigned int si, so; - unsigned long t; - unsigned int change_detector; - unsigned int poll_freq; - bool was_frozen; - - if (tpacpi_lifecycle == TPACPI_LIFE_EXITING) - goto exit; - - set_freezable(); - - so = 0; - si = 1; - t = 0; - - /* Initial state for compares */ - mutex_lock(&hotkey_thread_data_mutex); - change_detector = hotkey_config_change; - poll_mask = hotkey_source_mask; - event_mask = hotkey_source_mask & - (hotkey_driver_mask | hotkey_user_mask); - poll_freq = hotkey_poll_freq; - mutex_unlock(&hotkey_thread_data_mutex); - hotkey_read_nvram(&s[so], poll_mask); - - while (!kthread_should_stop()) { - if (t == 0) { - if (likely(poll_freq)) - t = 1000/poll_freq; - else - t = 100; /* should never happen... */ - } - t = msleep_interruptible(t); - if (unlikely(kthread_freezable_should_stop(&was_frozen))) - break; - - if (t > 0 && !was_frozen) - continue; - - mutex_lock(&hotkey_thread_data_mutex); - if (was_frozen || hotkey_config_change != change_detector) { - /* forget old state on thaw or config change */ - si = so; - t = 0; - change_detector = hotkey_config_change; - } - poll_mask = hotkey_source_mask; - event_mask = hotkey_source_mask & - (hotkey_driver_mask | hotkey_user_mask); - poll_freq = hotkey_poll_freq; - mutex_unlock(&hotkey_thread_data_mutex); - - if (likely(poll_mask)) { - hotkey_read_nvram(&s[si], poll_mask); - if (likely(si != so)) { - hotkey_compare_and_issue_event(&s[so], &s[si], - event_mask); - } - } - - so = si; - si ^= 1; - } - -exit: - return 0; -} - -static void hotkey_poll_stop_sync(void) -{ - lockdep_assert_held(&hotkey_mutex); - - if (tpacpi_hotkey_task) { - kthread_stop(tpacpi_hotkey_task); - tpacpi_hotkey_task = NULL; - } -} - -static void hotkey_poll_setup(const bool may_warn) -{ - const u32 poll_driver_mask = hotkey_driver_mask & hotkey_source_mask; - const u32 poll_user_mask = hotkey_user_mask & hotkey_source_mask; - - lockdep_assert_held(&hotkey_mutex); - - if (hotkey_poll_freq > 0 && - (poll_driver_mask || - (poll_user_mask && tpacpi_inputdev->users > 0))) { - if (!tpacpi_hotkey_task) { - tpacpi_hotkey_task = kthread_run(hotkey_kthread, - NULL, TPACPI_NVRAM_KTHREAD_NAME); - if (IS_ERR(tpacpi_hotkey_task)) { - tpacpi_hotkey_task = NULL; - pr_err("could not create kernel thread for hotkey polling\n"); - } - } - } else { - hotkey_poll_stop_sync(); - if (may_warn && (poll_driver_mask || poll_user_mask) && - hotkey_poll_freq == 0) { - pr_notice("hot keys 0x%08x and/or events 0x%08x require polling, which is currently disabled\n", - poll_user_mask, poll_driver_mask); - } - } -} - -static void hotkey_poll_setup_safe(const bool may_warn) -{ - mutex_lock(&hotkey_mutex); - hotkey_poll_setup(may_warn); - mutex_unlock(&hotkey_mutex); -} - -static void hotkey_poll_set_freq(unsigned int freq) -{ - lockdep_assert_held(&hotkey_mutex); - - if (!freq) - hotkey_poll_stop_sync(); - - hotkey_poll_freq = freq; -} - -#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ - -static void hotkey_poll_setup(const bool __unused) -{ -} - -static void hotkey_poll_setup_safe(const bool __unused) -{ -} - -static void hotkey_poll_stop_sync(void) -{ -} -#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ - -static int hotkey_inputdev_open(struct input_dev *dev) -{ - switch (tpacpi_lifecycle) { - case TPACPI_LIFE_INIT: - case TPACPI_LIFE_RUNNING: - hotkey_poll_setup_safe(false); - return 0; - case TPACPI_LIFE_EXITING: - return -EBUSY; - } - - /* Should only happen if tpacpi_lifecycle is corrupt */ - BUG(); - return -EBUSY; -} - -static void hotkey_inputdev_close(struct input_dev *dev) -{ - /* disable hotkey polling when possible */ - if (tpacpi_lifecycle != TPACPI_LIFE_EXITING && - !(hotkey_source_mask & hotkey_driver_mask)) - hotkey_poll_setup_safe(false); -} - -/* sysfs hotkey enable ------------------------------------------------- */ -static ssize_t hotkey_enable_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - int res, status; - - printk_deprecated_attribute("hotkey_enable", - "Hotkey reporting is always enabled"); - - res = hotkey_status_get(&status); - if (res) - return res; - - return sysfs_emit(buf, "%d\n", status); -} - -static ssize_t hotkey_enable_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - unsigned long t; - - printk_deprecated_attribute("hotkey_enable", - "Hotkeys can be disabled through hotkey_mask"); - - if (parse_strtoul(buf, 1, &t)) - return -EINVAL; - - if (t == 0) - return -EPERM; - - return count; -} - -static DEVICE_ATTR_RW(hotkey_enable); - -/* sysfs hotkey mask --------------------------------------------------- */ -static ssize_t hotkey_mask_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - return sysfs_emit(buf, "0x%08x\n", hotkey_user_mask); -} - -static ssize_t hotkey_mask_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - unsigned long t; - int res; - - if (parse_strtoul(buf, 0xffffffffUL, &t)) - return -EINVAL; - - if (mutex_lock_killable(&hotkey_mutex)) - return -ERESTARTSYS; - - res = hotkey_user_mask_set(t); - -#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL - hotkey_poll_setup(true); -#endif - - mutex_unlock(&hotkey_mutex); - - tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t); - - return (res) ? res : count; -} - -static DEVICE_ATTR_RW(hotkey_mask); - -/* sysfs hotkey bios_enabled ------------------------------------------- */ -static ssize_t hotkey_bios_enabled_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - return sysfs_emit(buf, "0\n"); -} - -static DEVICE_ATTR_RO(hotkey_bios_enabled); - -/* sysfs hotkey bios_mask ---------------------------------------------- */ -static ssize_t hotkey_bios_mask_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - printk_deprecated_attribute("hotkey_bios_mask", - "This attribute is useless."); - return sysfs_emit(buf, "0x%08x\n", hotkey_orig_mask); -} - -static DEVICE_ATTR_RO(hotkey_bios_mask); - -/* sysfs hotkey all_mask ----------------------------------------------- */ -static ssize_t hotkey_all_mask_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - return sysfs_emit(buf, "0x%08x\n", - hotkey_all_mask | hotkey_source_mask); -} - -static DEVICE_ATTR_RO(hotkey_all_mask); - -/* sysfs hotkey all_mask ----------------------------------------------- */ -static ssize_t hotkey_adaptive_all_mask_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - return sysfs_emit(buf, "0x%08x\n", - hotkey_adaptive_all_mask | hotkey_source_mask); -} - -static DEVICE_ATTR_RO(hotkey_adaptive_all_mask); - -/* sysfs hotkey recommended_mask --------------------------------------- */ -static ssize_t hotkey_recommended_mask_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - return sysfs_emit(buf, "0x%08x\n", - (hotkey_all_mask | hotkey_source_mask) - & ~hotkey_reserved_mask); -} - -static DEVICE_ATTR_RO(hotkey_recommended_mask); - -#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL - -/* sysfs hotkey hotkey_source_mask ------------------------------------- */ -static ssize_t hotkey_source_mask_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - return sysfs_emit(buf, "0x%08x\n", hotkey_source_mask); -} - -static ssize_t hotkey_source_mask_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - unsigned long t; - u32 r_ev; - int rc; - - if (parse_strtoul(buf, 0xffffffffUL, &t) || - ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0)) - return -EINVAL; - - if (mutex_lock_killable(&hotkey_mutex)) - return -ERESTARTSYS; - - HOTKEY_CONFIG_CRITICAL_START - hotkey_source_mask = t; - HOTKEY_CONFIG_CRITICAL_END - - rc = hotkey_mask_set((hotkey_user_mask | hotkey_driver_mask) & - ~hotkey_source_mask); - hotkey_poll_setup(true); - - /* check if events needed by the driver got disabled */ - r_ev = hotkey_driver_mask & ~(hotkey_acpi_mask & hotkey_all_mask) - & ~hotkey_source_mask & TPACPI_HKEY_NVRAM_KNOWN_MASK; - - mutex_unlock(&hotkey_mutex); - - if (rc < 0) - pr_err("hotkey_source_mask: failed to update the firmware event mask!\n"); - - if (r_ev) - pr_notice("hotkey_source_mask: some important events were disabled: 0x%04x\n", - r_ev); - - tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t); - - return (rc < 0) ? rc : count; -} - -static DEVICE_ATTR_RW(hotkey_source_mask); - -/* sysfs hotkey hotkey_poll_freq --------------------------------------- */ -static ssize_t hotkey_poll_freq_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - return sysfs_emit(buf, "%d\n", hotkey_poll_freq); -} - -static ssize_t hotkey_poll_freq_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - unsigned long t; - - if (parse_strtoul(buf, 25, &t)) - return -EINVAL; - - if (mutex_lock_killable(&hotkey_mutex)) - return -ERESTARTSYS; - - hotkey_poll_set_freq(t); - hotkey_poll_setup(true); - - mutex_unlock(&hotkey_mutex); - - tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t); - - return count; -} - -static DEVICE_ATTR_RW(hotkey_poll_freq); - -#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ - -/* sysfs hotkey radio_sw (pollable) ------------------------------------ */ -static ssize_t hotkey_radio_sw_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - int res; - res = hotkey_get_wlsw(); - if (res < 0) - return res; - - /* Opportunistic update */ - tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF)); - - return sysfs_emit(buf, "%d\n", - (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1); -} - -static DEVICE_ATTR_RO(hotkey_radio_sw); - -static void hotkey_radio_sw_notify_change(void) -{ - if (tp_features.hotkey_wlsw) - sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, - "hotkey_radio_sw"); -} - -/* sysfs hotkey tablet mode (pollable) --------------------------------- */ -static ssize_t hotkey_tablet_mode_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - int res, s; - res = hotkey_get_tablet_mode(&s); - if (res < 0) - return res; - - return sysfs_emit(buf, "%d\n", !!s); -} - -static DEVICE_ATTR_RO(hotkey_tablet_mode); - -static void hotkey_tablet_mode_notify_change(void) -{ - if (tp_features.hotkey_tablet) - sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, - "hotkey_tablet_mode"); -} - -/* sysfs wakeup reason (pollable) -------------------------------------- */ -static ssize_t hotkey_wakeup_reason_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - return sysfs_emit(buf, "%d\n", hotkey_wakeup_reason); -} - -static DEVICE_ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL); - -static void hotkey_wakeup_reason_notify_change(void) -{ - sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, - "wakeup_reason"); -} - -/* sysfs wakeup hotunplug_complete (pollable) -------------------------- */ -static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - return sysfs_emit(buf, "%d\n", hotkey_autosleep_ack); -} - -static DEVICE_ATTR(wakeup_hotunplug_complete, S_IRUGO, - hotkey_wakeup_hotunplug_complete_show, NULL); - -static void hotkey_wakeup_hotunplug_complete_notify_change(void) -{ - sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, - "wakeup_hotunplug_complete"); -} - -/* sysfs adaptive kbd mode --------------------------------------------- */ - -static int adaptive_keyboard_get_mode(void); -static int adaptive_keyboard_set_mode(int new_mode); - -enum ADAPTIVE_KEY_MODE { - HOME_MODE, - WEB_BROWSER_MODE, - WEB_CONFERENCE_MODE, - FUNCTION_MODE, - LAYFLAT_MODE -}; - -static ssize_t adaptive_kbd_mode_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - int current_mode; - - current_mode = adaptive_keyboard_get_mode(); - if (current_mode < 0) - return current_mode; - - return sysfs_emit(buf, "%d\n", current_mode); -} - -static ssize_t adaptive_kbd_mode_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - unsigned long t; - int res; - - if (parse_strtoul(buf, LAYFLAT_MODE, &t)) - return -EINVAL; - - res = adaptive_keyboard_set_mode(t); - return (res < 0) ? res : count; -} - -static DEVICE_ATTR_RW(adaptive_kbd_mode); - -static struct attribute *adaptive_kbd_attributes[] = { - &dev_attr_adaptive_kbd_mode.attr, - NULL -}; - -static umode_t hadaptive_kbd_attr_is_visible(struct kobject *kobj, - struct attribute *attr, int n) -{ - return tp_features.has_adaptive_kbd ? attr->mode : 0; -} - -static const struct attribute_group adaptive_kbd_attr_group = { - .is_visible = hadaptive_kbd_attr_is_visible, - .attrs = adaptive_kbd_attributes, -}; - -/* --------------------------------------------------------------------- */ - -static struct attribute *hotkey_attributes[] = { - &dev_attr_hotkey_enable.attr, - &dev_attr_hotkey_bios_enabled.attr, - &dev_attr_hotkey_bios_mask.attr, - &dev_attr_wakeup_reason.attr, - &dev_attr_wakeup_hotunplug_complete.attr, - &dev_attr_hotkey_mask.attr, - &dev_attr_hotkey_all_mask.attr, - &dev_attr_hotkey_adaptive_all_mask.attr, - &dev_attr_hotkey_recommended_mask.attr, - &dev_attr_hotkey_tablet_mode.attr, - &dev_attr_hotkey_radio_sw.attr, -#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL - &dev_attr_hotkey_source_mask.attr, - &dev_attr_hotkey_poll_freq.attr, -#endif - NULL -}; - -static umode_t hotkey_attr_is_visible(struct kobject *kobj, - struct attribute *attr, int n) -{ - if (attr == &dev_attr_hotkey_tablet_mode.attr) { - if (!tp_features.hotkey_tablet) - return 0; - } else if (attr == &dev_attr_hotkey_radio_sw.attr) { - if (!tp_features.hotkey_wlsw) - return 0; - } - - return attr->mode; -} - -static const struct attribute_group hotkey_attr_group = { - .is_visible = hotkey_attr_is_visible, - .attrs = hotkey_attributes, -}; - -/* - * Sync both the hw and sw blocking state of all switches - */ -static void tpacpi_send_radiosw_update(void) -{ - int wlsw; - - /* - * We must sync all rfkill controllers *before* issuing any - * rfkill input events, or we will race the rfkill core input - * handler. - * - * tpacpi_inputdev_send_mutex works as a synchronization point - * for the above. - * - * We optimize to avoid numerous calls to hotkey_get_wlsw. - */ - - wlsw = hotkey_get_wlsw(); - - /* Sync hw blocking state first if it is hw-blocked */ - if (wlsw == TPACPI_RFK_RADIO_OFF) - tpacpi_rfk_update_hwblock_state(true); - - /* Sync hw blocking state last if it is hw-unblocked */ - if (wlsw == TPACPI_RFK_RADIO_ON) - tpacpi_rfk_update_hwblock_state(false); - - /* Issue rfkill input event for WLSW switch */ - if (!(wlsw < 0)) { - mutex_lock(&tpacpi_inputdev_send_mutex); - - input_report_switch(tpacpi_inputdev, - SW_RFKILL_ALL, (wlsw > 0)); - input_sync(tpacpi_inputdev); - - mutex_unlock(&tpacpi_inputdev_send_mutex); - } - - /* - * this can be unconditional, as we will poll state again - * if userspace uses the notify to read data - */ - hotkey_radio_sw_notify_change(); -} - -static void hotkey_exit(void) -{ - mutex_lock(&hotkey_mutex); - hotkey_poll_stop_sync(); - dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY, - "restoring original HKEY status and mask\n"); - /* yes, there is a bitwise or below, we want the - * functions to be called even if one of them fail */ - if (((tp_features.hotkey_mask && - hotkey_mask_set(hotkey_orig_mask)) | - hotkey_status_set(false)) != 0) - pr_err("failed to restore hot key mask to BIOS defaults\n"); - - mutex_unlock(&hotkey_mutex); -} - -/* - * HKEY quirks: - * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12 - */ - -#define TPACPI_HK_Q_INIMASK 0x0001 - -static const struct tpacpi_quirk tpacpi_hotkey_qtable[] __initconst = { - TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK), /* 600E */ - TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK), /* 600E */ - TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK), /* 770, 770E, 770ED */ - TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK), /* A20m */ - TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK), /* A20p */ - TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK), /* A21e, A22e */ - TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK), /* A21e */ - TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK), /* A21m, A22m */ - TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK), /* A21p, A22p */ - TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK), /* A22e */ - TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK), /* A22m */ - TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK), /* A30/p (0) */ - TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK), /* R30 */ - TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK), /* R31 */ - TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK), /* T20 */ - TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK), /* T21 */ - TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK), /* T22 */ - TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK), /* X20, X21 */ - TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK), /* X22, X23, X24 */ -}; - -static int hotkey_init_tablet_mode(void) -{ - int in_tablet_mode = 0, res; - char *type = NULL; - - if (acpi_evalf(hkey_handle, &res, "GMMS", "qdd", 0)) { - int has_tablet_mode; - - in_tablet_mode = hotkey_gmms_get_tablet_mode(res, - &has_tablet_mode); - /* - * The Yoga 11e series has 2 accelerometers described by a - * BOSC0200 ACPI node. This setup relies on a Windows service - * which calls special ACPI methods on this node to report - * the laptop/tent/tablet mode to the EC. The bmc150 iio driver - * does not support this, so skip the hotkey on these models. - */ - if (has_tablet_mode && !dual_accel_detect()) - tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_GMMS; - type = "GMMS"; - } else if (acpi_evalf(hkey_handle, &res, "MHKG", "qd")) { - /* For X41t, X60t, X61t Tablets... */ - tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_MHKG; - in_tablet_mode = !!(res & TP_HOTKEY_TABLET_MASK); - type = "MHKG"; - } - - if (!tp_features.hotkey_tablet) - return 0; - - pr_info("Tablet mode switch found (type: %s), currently in %s mode\n", - type, in_tablet_mode ? "tablet" : "laptop"); - - return in_tablet_mode; -} - -static const struct key_entry keymap_ibm[] __initconst = { - /* Original hotkey mappings translated scancodes 0x00 - 0x1f */ - { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF1, { KEY_FN_F1 } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF2, { KEY_BATTERY } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF3, { KEY_COFFEE } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF4, { KEY_SLEEP } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF5, { KEY_WLAN } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF6, { KEY_FN_F6 } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF7, { KEY_SWITCHVIDEOMODE } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF8, { KEY_FN_F8 } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF9, { KEY_FN_F9 } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF10, { KEY_FN_F10 } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF11, { KEY_FN_F11 } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF12, { KEY_SUSPEND } }, - /* Brightness: firmware always reacts, suppressed through hotkey_reserved_mask. */ - { KE_KEY, TP_ACPI_HOTKEYSCAN_FNHOME, { KEY_BRIGHTNESSUP } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_FNEND, { KEY_BRIGHTNESSDOWN } }, - /* Thinklight: firmware always reacts, suppressed through hotkey_reserved_mask. */ - { KE_KEY, TP_ACPI_HOTKEYSCAN_FNPAGEUP, { KEY_KBDILLUMTOGGLE } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_FNSPACE, { KEY_ZOOM } }, - /* - * Volume: firmware always reacts and reprograms the built-in *extra* mixer. - * Suppressed by default through hotkey_reserved_mask. - */ - { KE_KEY, TP_ACPI_HOTKEYSCAN_VOLUMEUP, { KEY_VOLUMEUP } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, { KEY_VOLUMEDOWN } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_MUTE, { KEY_MUTE } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_THINKPAD, { KEY_VENDOR } }, - { KE_END } -}; - -static const struct key_entry keymap_lenovo[] __initconst = { - /* Original hotkey mappings translated scancodes 0x00 - 0x1f */ - { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF1, { KEY_FN_F1 } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF2, { KEY_COFFEE } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF3, { KEY_BATTERY } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF4, { KEY_SLEEP } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF5, { KEY_WLAN } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF6, { KEY_CAMERA, } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF7, { KEY_SWITCHVIDEOMODE } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF8, { KEY_FN_F8 } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF9, { KEY_FN_F9 } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF10, { KEY_FN_F10 } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF11, { KEY_FN_F11 } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF12, { KEY_SUSPEND } }, - /* - * These should be enabled --only-- when ACPI video is disabled and - * are handled in a special way by the init code. - */ - { KE_KEY, TP_ACPI_HOTKEYSCAN_FNHOME, { KEY_BRIGHTNESSUP } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_FNEND, { KEY_BRIGHTNESSDOWN } }, - /* Suppressed by default through hotkey_reserved_mask. */ - { KE_KEY, TP_ACPI_HOTKEYSCAN_FNPAGEUP, { KEY_KBDILLUMTOGGLE } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_FNSPACE, { KEY_ZOOM } }, - /* - * Volume: z60/z61, T60 (BIOS version?): firmware always reacts and - * reprograms the built-in *extra* mixer. - * T60?, T61, R60?, R61: firmware and EC tries to send these over - * the regular keyboard (not through tpacpi). There are still weird bugs - * re. MUTE. May cause the BIOS to interfere with the HDA mixer. - * Suppressed by default through hotkey_reserved_mask. - */ - { KE_KEY, TP_ACPI_HOTKEYSCAN_VOLUMEUP, { KEY_VOLUMEUP } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, { KEY_VOLUMEDOWN } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_MUTE, { KEY_MUTE } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_THINKPAD, { KEY_VENDOR } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_MICMUTE, { KEY_MICMUTE } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_CONFIG, { KEY_CONFIG } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_SEARCH, { KEY_SEARCH } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_SCALE, { KEY_SCALE } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_FILE, { KEY_FILE } }, - /* Adaptive keyboard mappings for Carbon X1 2014 translated scancodes 0x20 - 0x33 */ - { KE_KEY, TP_ACPI_HOTKEYSCAN_MUTE2, { KEY_RESERVED } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_BRIGHTNESS_ZERO, { KEY_BRIGHTNESS_MIN } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL, { KEY_SELECTIVE_SCREENSHOT } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_CLOUD, { KEY_XFER } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_UNK9, { KEY_RESERVED } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_VOICE, { KEY_VOICECOMMAND } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_UNK10, { KEY_RESERVED } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_GESTURES, { KEY_RESERVED } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_UNK11, { KEY_RESERVED } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_UNK12, { KEY_RESERVED } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_UNK13, { KEY_RESERVED } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_CONFIG2, { KEY_CONFIG } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_NEW_TAB, { KEY_RESERVED } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_RELOAD, { KEY_REFRESH } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_BACK, { KEY_BACK } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_MIC_DOWN, { KEY_RESERVED } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_MIC_UP, { KEY_RESERVED } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_MIC_CANCELLATION, { KEY_RESERVED } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_CAMERA_MODE, { KEY_RESERVED } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_ROTATE_DISPLAY, { KEY_RESERVED } }, - /* Extended hotkeys mappings translated scancodes 0x34 - 0x4d */ - { KE_KEY, TP_ACPI_HOTKEYSCAN_STAR, { KEY_BOOKMARKS } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL2, { KEY_SELECTIVE_SCREENSHOT } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_CALCULATOR, { KEY_CALC } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_BLUETOOTH, { KEY_BLUETOOTH } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_KEYBOARD, { KEY_KEYBOARD } }, - /* Used by "Lenovo Quick Clean" */ - { KE_KEY, TP_ACPI_HOTKEYSCAN_FN_RIGHT_SHIFT, { KEY_FN_RIGHT_SHIFT } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_NOTIFICATION_CENTER, { KEY_NOTIFICATION_CENTER } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_PICKUP_PHONE, { KEY_PICKUP_PHONE } }, - { KE_KEY, TP_ACPI_HOTKEYSCAN_HANGUP_PHONE, { KEY_HANGUP_PHONE } }, - /* - * All mapping below are for raw untranslated hkey event codes mapped directly - * after switching to sparse keymap support. The mappings above use translated - * scancodes to preserve uAPI compatibility, see tpacpi_input_send_key(). - */ - { KE_KEY, 0x131d, { KEY_VENDOR } }, /* System debug info, similar to old ThinkPad key */ - { KE_KEY, 0x1320, { KEY_LINK_PHONE } }, - { KE_KEY, TP_HKEY_EV_TRACK_DOUBLETAP /* 0x8036 */, { KEY_PROG4 } }, - { KE_END } -}; - -static int __init hotkey_init(struct ibm_init_struct *iibm) -{ - enum keymap_index { - TPACPI_KEYMAP_IBM_GENERIC = 0, - TPACPI_KEYMAP_LENOVO_GENERIC, - }; - - static const struct tpacpi_quirk tpacpi_keymap_qtable[] __initconst = { - /* Generic maps (fallback) */ - { - .vendor = PCI_VENDOR_ID_IBM, - .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, - .quirks = TPACPI_KEYMAP_IBM_GENERIC, - }, - { - .vendor = PCI_VENDOR_ID_LENOVO, - .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, - .quirks = TPACPI_KEYMAP_LENOVO_GENERIC, - }, - }; - - unsigned long keymap_id, quirks; - const struct key_entry *keymap; - bool radiosw_state = false; - bool tabletsw_state = false; - int hkeyv, res, status, camera_shutter_state; - - vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, - "initializing hotkey subdriver\n"); - - BUG_ON(!tpacpi_inputdev); - BUG_ON(tpacpi_inputdev->open != NULL || - tpacpi_inputdev->close != NULL); - - TPACPI_ACPIHANDLE_INIT(hkey); - mutex_init(&hotkey_mutex); - -#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL - mutex_init(&hotkey_thread_data_mutex); -#endif - - /* hotkey not supported on 570 */ - tp_features.hotkey = hkey_handle != NULL; - - vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, - "hotkeys are %s\n", - str_supported(tp_features.hotkey)); - - if (!tp_features.hotkey) - return -ENODEV; - - quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable, - ARRAY_SIZE(tpacpi_hotkey_qtable)); - - tpacpi_disable_brightness_delay(); - - /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p, - A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking - for HKEY interface version 0x100 */ - if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) { - vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, - "firmware HKEY interface version: 0x%x\n", - hkeyv); - - switch (hkeyv >> 8) { - case 1: - /* - * MHKV 0x100 in A31, R40, R40e, - * T4x, X31, and later - */ - - /* Paranoia check AND init hotkey_all_mask */ - if (!acpi_evalf(hkey_handle, &hotkey_all_mask, - "MHKA", "qd")) { - pr_err("missing MHKA handler, please report this to %s\n", - TPACPI_MAIL); - /* Fallback: pre-init for FN+F3,F4,F12 */ - hotkey_all_mask = 0x080cU; - } else { - tp_features.hotkey_mask = 1; - } - break; - - case 2: - /* - * MHKV 0x200 in X1, T460s, X260, T560, X1 Tablet (2016) - */ - - /* Paranoia check AND init hotkey_all_mask */ - if (!acpi_evalf(hkey_handle, &hotkey_all_mask, - "MHKA", "dd", 1)) { - pr_err("missing MHKA handler, please report this to %s\n", - TPACPI_MAIL); - /* Fallback: pre-init for FN+F3,F4,F12 */ - hotkey_all_mask = 0x080cU; - } else { - tp_features.hotkey_mask = 1; - } - - /* - * Check if we have an adaptive keyboard, like on the - * Lenovo Carbon X1 2014 (2nd Gen). - */ - if (acpi_evalf(hkey_handle, &hotkey_adaptive_all_mask, - "MHKA", "dd", 2)) { - if (hotkey_adaptive_all_mask != 0) - tp_features.has_adaptive_kbd = true; - } else { - tp_features.has_adaptive_kbd = false; - hotkey_adaptive_all_mask = 0x0U; - } - break; - - default: - pr_err("unknown version of the HKEY interface: 0x%x\n", - hkeyv); - pr_err("please report this to %s\n", TPACPI_MAIL); - break; - } - } - - vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, - "hotkey masks are %s\n", - str_supported(tp_features.hotkey_mask)); - - /* Init hotkey_all_mask if not initialized yet */ - if (!tp_features.hotkey_mask && !hotkey_all_mask && - (quirks & TPACPI_HK_Q_INIMASK)) - hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */ - - /* Init hotkey_acpi_mask and hotkey_orig_mask */ - if (tp_features.hotkey_mask) { - /* hotkey_source_mask *must* be zero for - * the first hotkey_mask_get to return hotkey_orig_mask */ - mutex_lock(&hotkey_mutex); - res = hotkey_mask_get(); - mutex_unlock(&hotkey_mutex); - if (res) - return res; - - hotkey_orig_mask = hotkey_acpi_mask; - } else { - hotkey_orig_mask = hotkey_all_mask; - hotkey_acpi_mask = hotkey_all_mask; - } - -#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES - if (dbg_wlswemul) { - tp_features.hotkey_wlsw = 1; - radiosw_state = !!tpacpi_wlsw_emulstate; - pr_info("radio switch emulation enabled\n"); - } else -#endif - /* Not all thinkpads have a hardware radio switch */ - if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) { - tp_features.hotkey_wlsw = 1; - radiosw_state = !!status; - pr_info("radio switch found; radios are %s\n", str_enabled_disabled(status & BIT(0))); - } - - tabletsw_state = hotkey_init_tablet_mode(); - - /* Set up key map */ - keymap_id = tpacpi_check_quirks(tpacpi_keymap_qtable, - ARRAY_SIZE(tpacpi_keymap_qtable)); - dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, - "using keymap number %lu\n", keymap_id); - - /* Keys which should be reserved on both IBM and Lenovo models */ - hotkey_reserved_mask = TP_ACPI_HKEY_KBD_LIGHT_MASK | - TP_ACPI_HKEY_VOLUP_MASK | - TP_ACPI_HKEY_VOLDWN_MASK | - TP_ACPI_HKEY_MUTE_MASK; - /* - * Reserve brightness up/down unconditionally on IBM models, on Lenovo - * models these are disabled based on acpi_video_get_backlight_type(). - */ - if (keymap_id == TPACPI_KEYMAP_IBM_GENERIC) { - hotkey_reserved_mask |= TP_ACPI_HKEY_BRGHTUP_MASK | - TP_ACPI_HKEY_BRGHTDWN_MASK; - keymap = keymap_ibm; - } else { - keymap = keymap_lenovo; - } - - res = sparse_keymap_setup(tpacpi_inputdev, keymap, NULL); - if (res) - return res; - - camera_shutter_state = get_camera_shutter(); - if (camera_shutter_state >= 0) { - input_set_capability(tpacpi_inputdev, EV_SW, SW_CAMERA_LENS_COVER); - input_report_switch(tpacpi_inputdev, SW_CAMERA_LENS_COVER, camera_shutter_state); - } - - if (tp_features.hotkey_wlsw) { - input_set_capability(tpacpi_inputdev, EV_SW, SW_RFKILL_ALL); - input_report_switch(tpacpi_inputdev, - SW_RFKILL_ALL, radiosw_state); - } - if (tp_features.hotkey_tablet) { - input_set_capability(tpacpi_inputdev, EV_SW, SW_TABLET_MODE); - input_report_switch(tpacpi_inputdev, - SW_TABLET_MODE, tabletsw_state); - } - - /* Do not issue duplicate brightness change events to - * userspace. tpacpi_detect_brightness_capabilities() must have - * been called before this point */ - if (acpi_video_get_backlight_type() != acpi_backlight_vendor) { - pr_info("This ThinkPad has standard ACPI backlight brightness control, supported by the ACPI video driver\n"); - pr_notice("Disabling thinkpad-acpi brightness events by default...\n"); - - /* Disable brightness up/down on Lenovo thinkpads when - * ACPI is handling them, otherwise it is plain impossible - * for userspace to do something even remotely sane */ - hotkey_reserved_mask |= TP_ACPI_HKEY_BRGHTUP_MASK | - TP_ACPI_HKEY_BRGHTDWN_MASK; - } - -#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL - hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK - & ~hotkey_all_mask - & ~hotkey_reserved_mask; - - vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, - "hotkey source mask 0x%08x, polling freq %u\n", - hotkey_source_mask, hotkey_poll_freq); -#endif - - dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, - "enabling firmware HKEY event interface...\n"); - res = hotkey_status_set(true); - if (res) { - hotkey_exit(); - return res; - } - mutex_lock(&hotkey_mutex); - res = hotkey_mask_set(((hotkey_all_mask & ~hotkey_reserved_mask) - | hotkey_driver_mask) - & ~hotkey_source_mask); - mutex_unlock(&hotkey_mutex); - if (res < 0 && res != -ENXIO) { - hotkey_exit(); - return res; - } - hotkey_user_mask = (hotkey_acpi_mask | hotkey_source_mask) - & ~hotkey_reserved_mask; - vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, - "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n", - hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask); - - tpacpi_inputdev->open = &hotkey_inputdev_open; - tpacpi_inputdev->close = &hotkey_inputdev_close; - - hotkey_poll_setup_safe(true); - - /* Enable doubletap by default */ - tp_features.trackpoint_doubletap = 1; - - return 0; -} - -/* Thinkpad X1 Carbon support 5 modes including Home mode, Web browser - * mode, Web conference mode, Function mode and Lay-flat mode. - * We support Home mode and Function mode currently. - * - * Will consider support rest of modes in future. - * - */ -static const int adaptive_keyboard_modes[] = { - HOME_MODE, -/* WEB_BROWSER_MODE = 2, - WEB_CONFERENCE_MODE = 3, */ - FUNCTION_MODE -}; - -/* press Fn key a while second, it will switch to Function Mode. Then - * release Fn key, previous mode be restored. - */ -static bool adaptive_keyboard_mode_is_saved; -static int adaptive_keyboard_prev_mode; - -static int adaptive_keyboard_get_mode(void) -{ - int mode = 0; - - if (!acpi_evalf(hkey_handle, &mode, "GTRW", "dd", 0)) { - pr_err("Cannot read adaptive keyboard mode\n"); - return -EIO; - } - - return mode; -} - -static int adaptive_keyboard_set_mode(int new_mode) -{ - if (new_mode < 0 || - new_mode > LAYFLAT_MODE) - return -EINVAL; - - if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", new_mode)) { - pr_err("Cannot set adaptive keyboard mode\n"); - return -EIO; - } - - return 0; -} - -static int adaptive_keyboard_get_next_mode(int mode) -{ - size_t i; - size_t max_mode = ARRAY_SIZE(adaptive_keyboard_modes) - 1; - - for (i = 0; i <= max_mode; i++) { - if (adaptive_keyboard_modes[i] == mode) - break; - } - - if (i >= max_mode) - i = 0; - else - i++; - - return adaptive_keyboard_modes[i]; -} - -static void adaptive_keyboard_change_row(void) -{ - int mode; - - if (adaptive_keyboard_mode_is_saved) { - mode = adaptive_keyboard_prev_mode; - adaptive_keyboard_mode_is_saved = false; - } else { - mode = adaptive_keyboard_get_mode(); - if (mode < 0) - return; - mode = adaptive_keyboard_get_next_mode(mode); - } - - adaptive_keyboard_set_mode(mode); -} - -static void adaptive_keyboard_s_quickview_row(void) -{ - int mode; - - mode = adaptive_keyboard_get_mode(); - if (mode < 0) - return; - - adaptive_keyboard_prev_mode = mode; - adaptive_keyboard_mode_is_saved = true; - - adaptive_keyboard_set_mode(FUNCTION_MODE); -} - -/* 0x1000-0x1FFF: key presses */ -static bool hotkey_notify_hotkey(const u32 hkey, bool *send_acpi_ev) -{ - /* Never send ACPI netlink events for original hotkeys (hkey: 0x1001 - 0x1020) */ - if (hkey >= TP_HKEY_EV_ORIG_KEY_START && hkey <= TP_HKEY_EV_ORIG_KEY_END) { - *send_acpi_ev = false; - - /* Original hotkeys may be polled from NVRAM instead */ - unsigned int scancode = hkey - TP_HKEY_EV_ORIG_KEY_START; - if (hotkey_source_mask & (1 << scancode)) - return true; - } - - return tpacpi_input_send_key(hkey, send_acpi_ev); -} - -/* 0x2000-0x2FFF: Wakeup reason */ -static bool hotkey_notify_wakeup(const u32 hkey, bool *send_acpi_ev) -{ - switch (hkey) { - case TP_HKEY_EV_WKUP_S3_UNDOCK: /* suspend, undock */ - case TP_HKEY_EV_WKUP_S4_UNDOCK: /* hibernation, undock */ - hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK; - *send_acpi_ev = false; - break; - - case TP_HKEY_EV_WKUP_S3_BAYEJ: /* suspend, bay eject */ - case TP_HKEY_EV_WKUP_S4_BAYEJ: /* hibernation, bay eject */ - hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ; - *send_acpi_ev = false; - break; - - case TP_HKEY_EV_WKUP_S3_BATLOW: /* Battery on critical low level/S3 */ - case TP_HKEY_EV_WKUP_S4_BATLOW: /* Battery on critical low level/S4 */ - pr_alert("EMERGENCY WAKEUP: battery almost empty\n"); - /* how to auto-heal: */ - /* 2313: woke up from S3, go to S4/S5 */ - /* 2413: woke up from S4, go to S5 */ - break; - - default: - return false; - } - - if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) { - pr_info("woke up due to a hot-unplug request...\n"); - hotkey_wakeup_reason_notify_change(); - } - return true; -} - -/* 0x4000-0x4FFF: dock-related events */ -static bool hotkey_notify_dockevent(const u32 hkey, bool *send_acpi_ev) -{ - switch (hkey) { - case TP_HKEY_EV_UNDOCK_ACK: - /* ACPI undock operation completed after wakeup */ - hotkey_autosleep_ack = 1; - pr_info("undocked\n"); - hotkey_wakeup_hotunplug_complete_notify_change(); - return true; - - case TP_HKEY_EV_HOTPLUG_DOCK: /* docked to port replicator */ - pr_info("docked into hotplug port replicator\n"); - return true; - case TP_HKEY_EV_HOTPLUG_UNDOCK: /* undocked from port replicator */ - pr_info("undocked from hotplug port replicator\n"); - return true; - - /* - * Deliberately ignore attaching and detaching the keybord cover to avoid - * duplicates from intel-vbtn, which already emits SW_TABLET_MODE events - * to userspace. - * - * Please refer to the following thread for more information and a preliminary - * implementation using the GTOP ("Get Tablet OPtions") interface that could be - * extended to other attachment options of the ThinkPad X1 Tablet series, such as - * the Pico cartridge dock module: - * https://lore.kernel.org/platform-driver-x86/38cb8265-1e30-d547-9e12-b4ae290be737@a-kobel.de/ - */ - case TP_HKEY_EV_KBD_COVER_ATTACH: - case TP_HKEY_EV_KBD_COVER_DETACH: - *send_acpi_ev = false; - return true; - - default: - return false; - } -} - -/* 0x5000-0x5FFF: human interface helpers */ -static bool hotkey_notify_usrevent(const u32 hkey, bool *send_acpi_ev) -{ - switch (hkey) { - case TP_HKEY_EV_PEN_INSERTED: /* X61t: tablet pen inserted into bay */ - case TP_HKEY_EV_PEN_REMOVED: /* X61t: tablet pen removed from bay */ - return true; - - case TP_HKEY_EV_TABLET_TABLET: /* X41t-X61t: tablet mode */ - case TP_HKEY_EV_TABLET_NOTEBOOK: /* X41t-X61t: normal mode */ - tpacpi_input_send_tabletsw(); - hotkey_tablet_mode_notify_change(); - *send_acpi_ev = false; - return true; - - case TP_HKEY_EV_LID_CLOSE: /* Lid closed */ - case TP_HKEY_EV_LID_OPEN: /* Lid opened */ - case TP_HKEY_EV_BRGHT_CHANGED: /* brightness changed */ - /* do not propagate these events */ - *send_acpi_ev = false; - return true; - - default: - return false; - } -} - -static void thermal_dump_all_sensors(void); -static void palmsensor_refresh(void); - -/* 0x6000-0x6FFF: thermal alarms/notices and keyboard events */ -static bool hotkey_notify_6xxx(const u32 hkey, bool *send_acpi_ev) -{ - switch (hkey) { - case TP_HKEY_EV_THM_TABLE_CHANGED: - pr_debug("EC reports: Thermal Table has changed\n"); - /* recommended action: do nothing, we don't have - * Lenovo ATM information */ - return true; - case TP_HKEY_EV_THM_CSM_COMPLETED: - pr_debug("EC reports: Thermal Control Command set completed (DYTC)\n"); - /* Thermal event - pass on to event handler */ - tpacpi_driver_event(hkey); - return true; - case TP_HKEY_EV_THM_TRANSFM_CHANGED: - pr_debug("EC reports: Thermal Transformation changed (GMTS)\n"); - /* recommended action: do nothing, we don't have - * Lenovo ATM information */ - return true; - case TP_HKEY_EV_ALARM_BAT_HOT: - pr_crit("THERMAL ALARM: battery is too hot!\n"); - /* recommended action: warn user through gui */ - break; - case TP_HKEY_EV_ALARM_BAT_XHOT: - pr_alert("THERMAL EMERGENCY: battery is extremely hot!\n"); - /* recommended action: immediate sleep/hibernate */ - break; - case TP_HKEY_EV_ALARM_BAT_LIM_CHANGE: - pr_debug("Battery Info: battery charge threshold changed\n"); - /* User changed charging threshold. No action needed */ - return true; - case TP_HKEY_EV_ALARM_SENSOR_HOT: - pr_crit("THERMAL ALARM: a sensor reports something is too hot!\n"); - /* recommended action: warn user through gui, that */ - /* some internal component is too hot */ - break; - case TP_HKEY_EV_ALARM_SENSOR_XHOT: - pr_alert("THERMAL EMERGENCY: a sensor reports something is extremely hot!\n"); - /* recommended action: immediate sleep/hibernate */ - break; - case TP_HKEY_EV_AC_CHANGED: - /* X120e, X121e, X220, X220i, X220t, X230, T420, T420s, W520: - * AC status changed; can be triggered by plugging or - * unplugging AC adapter, docking or undocking. */ - - fallthrough; - - case TP_HKEY_EV_KEY_NUMLOCK: - case TP_HKEY_EV_KEY_FN: - /* key press events, we just ignore them as long as the EC - * is still reporting them in the normal keyboard stream */ - *send_acpi_ev = false; - return true; - - case TP_HKEY_EV_KEY_FN_ESC: - /* Get the media key status to force the status LED to update */ - acpi_evalf(hkey_handle, NULL, "GMKS", "v"); - *send_acpi_ev = false; - return true; - - case TP_HKEY_EV_TABLET_CHANGED: - tpacpi_input_send_tabletsw(); - hotkey_tablet_mode_notify_change(); - *send_acpi_ev = false; - return true; - - case TP_HKEY_EV_PALM_DETECTED: - case TP_HKEY_EV_PALM_UNDETECTED: - /* palm detected - pass on to event handler */ - palmsensor_refresh(); - return true; - - default: - /* report simply as unknown, no sensor dump */ - return false; - } - - thermal_dump_all_sensors(); - return true; -} - -static bool hotkey_notify_8xxx(const u32 hkey, bool *send_acpi_ev) -{ - switch (hkey) { - case TP_HKEY_EV_TRACK_DOUBLETAP: - if (tp_features.trackpoint_doubletap) - tpacpi_input_send_key(hkey, send_acpi_ev); - - return true; - default: - return false; - } -} - -static void hotkey_notify(struct ibm_struct *ibm, u32 event) -{ - u32 hkey; - bool send_acpi_ev; - bool known_ev; - - if (event != 0x80) { - pr_err("unknown HKEY notification event %d\n", event); - /* forward it to userspace, maybe it knows how to handle it */ - acpi_bus_generate_netlink_event( - ibm->acpi->device->pnp.device_class, - dev_name(&ibm->acpi->device->dev), - event, 0); - return; - } - - while (1) { - if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) { - pr_err("failed to retrieve HKEY event\n"); - return; - } - - if (hkey == 0) { - /* queue empty */ - return; - } - - send_acpi_ev = true; - known_ev = false; - - switch (hkey >> 12) { - case 1: - /* 0x1000-0x1FFF: key presses */ - known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev); - break; - case 2: - /* 0x2000-0x2FFF: Wakeup reason */ - known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev); - break; - case 3: - /* 0x3000-0x3FFF: bay-related wakeups */ - switch (hkey) { - case TP_HKEY_EV_BAYEJ_ACK: - hotkey_autosleep_ack = 1; - pr_info("bay ejected\n"); - hotkey_wakeup_hotunplug_complete_notify_change(); - known_ev = true; - break; - case TP_HKEY_EV_OPTDRV_EJ: - /* FIXME: kick libata if SATA link offline */ - known_ev = true; - break; - } - break; - case 4: - /* 0x4000-0x4FFF: dock-related events */ - known_ev = hotkey_notify_dockevent(hkey, &send_acpi_ev); - break; - case 5: - /* 0x5000-0x5FFF: human interface helpers */ - known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev); - break; - case 6: - /* 0x6000-0x6FFF: thermal alarms/notices and - * keyboard events */ - known_ev = hotkey_notify_6xxx(hkey, &send_acpi_ev); - break; - case 7: - /* 0x7000-0x7FFF: misc */ - if (tp_features.hotkey_wlsw && - hkey == TP_HKEY_EV_RFKILL_CHANGED) { - tpacpi_send_radiosw_update(); - send_acpi_ev = false; - known_ev = true; - } - break; - case 8: - /* 0x8000-0x8FFF: misc2 */ - known_ev = hotkey_notify_8xxx(hkey, &send_acpi_ev); - break; - } - if (!known_ev) { - pr_notice("unhandled HKEY event 0x%04x\n", hkey); - pr_notice("please report the conditions when this event happened to %s\n", - TPACPI_MAIL); - } - - /* netlink events */ - if (send_acpi_ev) { - acpi_bus_generate_netlink_event( - ibm->acpi->device->pnp.device_class, - dev_name(&ibm->acpi->device->dev), - event, hkey); - } - } -} - -static void hotkey_suspend(void) -{ - /* Do these on suspend, we get the events on early resume! */ - hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE; - hotkey_autosleep_ack = 0; - - /* save previous mode of adaptive keyboard of X1 Carbon */ - if (tp_features.has_adaptive_kbd) { - if (!acpi_evalf(hkey_handle, &adaptive_keyboard_prev_mode, - "GTRW", "dd", 0)) { - pr_err("Cannot read adaptive keyboard mode.\n"); - } - } -} - -static void hotkey_resume(void) -{ - tpacpi_disable_brightness_delay(); - - mutex_lock(&hotkey_mutex); - if (hotkey_status_set(true) < 0 || - hotkey_mask_set(hotkey_acpi_mask) < 0) - pr_err("error while attempting to reset the event firmware interface\n"); - mutex_unlock(&hotkey_mutex); - - tpacpi_send_radiosw_update(); - tpacpi_input_send_tabletsw(); - hotkey_tablet_mode_notify_change(); - hotkey_wakeup_reason_notify_change(); - hotkey_wakeup_hotunplug_complete_notify_change(); - hotkey_poll_setup_safe(false); - - /* restore previous mode of adapive keyboard of X1 Carbon */ - if (tp_features.has_adaptive_kbd) { - if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", - adaptive_keyboard_prev_mode)) { - pr_err("Cannot set adaptive keyboard mode.\n"); - } - } -} - -/* procfs -------------------------------------------------------------- */ -static int hotkey_read(struct seq_file *m) -{ - int res, status; - - if (!tp_features.hotkey) { - seq_printf(m, "status:\t\tnot supported\n"); - return 0; - } - - if (mutex_lock_killable(&hotkey_mutex)) - return -ERESTARTSYS; - res = hotkey_status_get(&status); - if (!res) - res = hotkey_mask_get(); - mutex_unlock(&hotkey_mutex); - if (res) - return res; - - seq_printf(m, "status:\t\t%s\n", str_enabled_disabled(status & BIT(0))); - if (hotkey_all_mask) { - seq_printf(m, "mask:\t\t0x%08x\n", hotkey_user_mask); - seq_printf(m, "commands:\tenable, disable, reset, <mask>\n"); - } else { - seq_printf(m, "mask:\t\tnot supported\n"); - seq_printf(m, "commands:\tenable, disable, reset\n"); - } - - return 0; -} - -static void hotkey_enabledisable_warn(bool enable) -{ - tpacpi_log_usertask("procfs hotkey enable/disable"); - if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable), - pr_fmt("hotkey enable/disable functionality has been removed from the driver. Hotkeys are always enabled.\n"))) - pr_err("Please remove the hotkey=enable module parameter, it is deprecated. Hotkeys are always enabled.\n"); -} - -static int hotkey_write(char *buf) -{ - int res; - u32 mask; - char *cmd; - - if (!tp_features.hotkey) - return -ENODEV; - - if (mutex_lock_killable(&hotkey_mutex)) - return -ERESTARTSYS; - - mask = hotkey_user_mask; - - res = 0; - while ((cmd = strsep(&buf, ","))) { - if (strstarts(cmd, "enable")) { - hotkey_enabledisable_warn(1); - } else if (strstarts(cmd, "disable")) { - hotkey_enabledisable_warn(0); - res = -EPERM; - } else if (strstarts(cmd, "reset")) { - mask = (hotkey_all_mask | hotkey_source_mask) - & ~hotkey_reserved_mask; - } else if (sscanf(cmd, "0x%x", &mask) == 1) { - /* mask set */ - } else if (sscanf(cmd, "%x", &mask) == 1) { - /* mask set */ - } else { - res = -EINVAL; - goto errexit; - } - } - - if (!res) { - tpacpi_disclose_usertask("procfs hotkey", - "set mask to 0x%08x\n", mask); - res = hotkey_user_mask_set(mask); - } - -errexit: - mutex_unlock(&hotkey_mutex); - return res; -} - -static const struct acpi_device_id ibm_htk_device_ids[] = { - {TPACPI_ACPI_IBM_HKEY_HID, 0}, - {TPACPI_ACPI_LENOVO_HKEY_HID, 0}, - {TPACPI_ACPI_LENOVO_HKEY_V2_HID, 0}, - {"", 0}, -}; - -static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = { - .hid = ibm_htk_device_ids, - .notify = hotkey_notify, - .handle = &hkey_handle, - .type = ACPI_DEVICE_NOTIFY, -}; - -static struct ibm_struct hotkey_driver_data = { - .name = "hotkey", - .read = hotkey_read, - .write = hotkey_write, - .exit = hotkey_exit, - .resume = hotkey_resume, - .suspend = hotkey_suspend, - .acpi = &ibm_hotkey_acpidriver, -}; - -/************************************************************************* - * Bluetooth subdriver - */ - -enum { - /* ACPI GBDC/SBDC bits */ - TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */ - TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */ - TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume: - 0 = disable, 1 = enable */ -}; - -enum { - /* ACPI \BLTH commands */ - TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */ - TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */ - TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */ - TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */ - TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */ -}; - -#define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw" - -static int bluetooth_get_status(void) -{ - int status; - -#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES - if (dbg_bluetoothemul) - return (tpacpi_bluetooth_emulstate) ? - TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; -#endif - - if (!acpi_evalf(hkey_handle, &status, "GBDC", "d")) - return -EIO; - - return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ? - TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; -} - -static int bluetooth_set_status(enum tpacpi_rfkill_state state) -{ - int status; - - vdbg_printk(TPACPI_DBG_RFKILL, "will attempt to %s bluetooth\n", - str_enable_disable(state == TPACPI_RFK_RADIO_ON)); - -#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES - if (dbg_bluetoothemul) { - tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON); - return 0; - } -#endif - - if (state == TPACPI_RFK_RADIO_ON) - status = TP_ACPI_BLUETOOTH_RADIOSSW - | TP_ACPI_BLUETOOTH_RESUMECTRL; - else - status = 0; - - if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status)) - return -EIO; - - return 0; -} - -/* sysfs bluetooth enable ---------------------------------------------- */ -static ssize_t bluetooth_enable_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID, - attr, buf); -} - -static ssize_t bluetooth_enable_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID, - attr, buf, count); -} - -static DEVICE_ATTR_RW(bluetooth_enable); - -/* --------------------------------------------------------------------- */ - -static struct attribute *bluetooth_attributes[] = { - &dev_attr_bluetooth_enable.attr, - NULL -}; - -static umode_t bluetooth_attr_is_visible(struct kobject *kobj, - struct attribute *attr, int n) -{ - return tp_features.bluetooth ? attr->mode : 0; -} - -static const struct attribute_group bluetooth_attr_group = { - .is_visible = bluetooth_attr_is_visible, - .attrs = bluetooth_attributes, -}; - -static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = { - .get_status = bluetooth_get_status, - .set_status = bluetooth_set_status, -}; - -static void bluetooth_shutdown(void) -{ - /* Order firmware to save current state to NVRAM */ - if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd", - TP_ACPI_BLTH_SAVE_STATE)) - pr_notice("failed to save bluetooth state to NVRAM\n"); - else - vdbg_printk(TPACPI_DBG_RFKILL, - "bluetooth state saved to NVRAM\n"); -} - -static void bluetooth_exit(void) -{ - tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID); - bluetooth_shutdown(); -} - -static const struct dmi_system_id fwbug_list[] __initconst = { - { - .ident = "ThinkPad E485", - .driver_data = &quirk_btusb_bug, - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), - DMI_MATCH(DMI_BOARD_NAME, "20KU"), - }, - }, - { - .ident = "ThinkPad E585", - .driver_data = &quirk_btusb_bug, - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), - DMI_MATCH(DMI_BOARD_NAME, "20KV"), - }, - }, - { - .ident = "ThinkPad A285 - 20MW", - .driver_data = &quirk_btusb_bug, - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), - DMI_MATCH(DMI_BOARD_NAME, "20MW"), - }, - }, - { - .ident = "ThinkPad A285 - 20MX", - .driver_data = &quirk_btusb_bug, - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), - DMI_MATCH(DMI_BOARD_NAME, "20MX"), - }, - }, - { - .ident = "ThinkPad A485 - 20MU", - .driver_data = &quirk_btusb_bug, - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), - DMI_MATCH(DMI_BOARD_NAME, "20MU"), - }, - }, - { - .ident = "ThinkPad A485 - 20MV", - .driver_data = &quirk_btusb_bug, - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), - DMI_MATCH(DMI_BOARD_NAME, "20MV"), - }, - }, - {} -}; - -static const struct pci_device_id fwbug_cards_ids[] __initconst = { - { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24F3) }, - { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24FD) }, - { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x2526) }, - {} -}; - - -static int __init have_bt_fwbug(void) -{ - /* - * Some AMD based ThinkPads have a firmware bug that calling - * "GBDC" will cause bluetooth on Intel wireless cards blocked - */ - if (tp_features.quirks && tp_features.quirks->btusb_bug && - pci_dev_present(fwbug_cards_ids)) { - vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, - FW_BUG "disable bluetooth subdriver for Intel cards\n"); - return 1; - } else - return 0; -} - -static int __init bluetooth_init(struct ibm_init_struct *iibm) -{ - int res; - int status = 0; - - vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, - "initializing bluetooth subdriver\n"); - - TPACPI_ACPIHANDLE_INIT(hkey); - - /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, - G4x, R30, R31, R40e, R50e, T20-22, X20-21 */ - tp_features.bluetooth = !have_bt_fwbug() && hkey_handle && - acpi_evalf(hkey_handle, &status, "GBDC", "qd"); - - vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, - "bluetooth is %s, status 0x%02x\n", - str_supported(tp_features.bluetooth), - status); - -#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES - if (dbg_bluetoothemul) { - tp_features.bluetooth = 1; - pr_info("bluetooth switch emulation enabled\n"); - } else -#endif - if (tp_features.bluetooth && - !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) { - /* no bluetooth hardware present in system */ - tp_features.bluetooth = 0; - dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, - "bluetooth hardware not installed\n"); - } - - if (!tp_features.bluetooth) - return -ENODEV; - - res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID, - &bluetooth_tprfk_ops, - RFKILL_TYPE_BLUETOOTH, - TPACPI_RFK_BLUETOOTH_SW_NAME, - true); - return res; -} - -/* procfs -------------------------------------------------------------- */ -static int bluetooth_read(struct seq_file *m) -{ - return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, m); -} - -static int bluetooth_write(char *buf) -{ - return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf); -} - -static struct ibm_struct bluetooth_driver_data = { - .name = "bluetooth", - .read = bluetooth_read, - .write = bluetooth_write, - .exit = bluetooth_exit, - .shutdown = bluetooth_shutdown, -}; - -/************************************************************************* - * Wan subdriver - */ - -enum { - /* ACPI GWAN/SWAN bits */ - TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */ - TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */ - TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume: - 0 = disable, 1 = enable */ -}; - -#define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw" - -static int wan_get_status(void) -{ - int status; - -#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES - if (dbg_wwanemul) - return (tpacpi_wwan_emulstate) ? - TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; -#endif - - if (!acpi_evalf(hkey_handle, &status, "GWAN", "d")) - return -EIO; - - return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ? - TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; -} - -static int wan_set_status(enum tpacpi_rfkill_state state) -{ - int status; - - vdbg_printk(TPACPI_DBG_RFKILL, "will attempt to %s wwan\n", - str_enable_disable(state == TPACPI_RFK_RADIO_ON)); - -#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES - if (dbg_wwanemul) { - tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON); - return 0; - } -#endif - - if (state == TPACPI_RFK_RADIO_ON) - status = TP_ACPI_WANCARD_RADIOSSW - | TP_ACPI_WANCARD_RESUMECTRL; - else - status = 0; - - if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status)) - return -EIO; - - return 0; -} - -/* sysfs wan enable ---------------------------------------------------- */ -static ssize_t wan_enable_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID, - attr, buf); -} - -static ssize_t wan_enable_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID, - attr, buf, count); -} - -static DEVICE_ATTR(wwan_enable, S_IWUSR | S_IRUGO, - wan_enable_show, wan_enable_store); - -/* --------------------------------------------------------------------- */ - -static struct attribute *wan_attributes[] = { - &dev_attr_wwan_enable.attr, - NULL -}; - -static umode_t wan_attr_is_visible(struct kobject *kobj, struct attribute *attr, - int n) -{ - return tp_features.wan ? attr->mode : 0; -} - -static const struct attribute_group wan_attr_group = { - .is_visible = wan_attr_is_visible, - .attrs = wan_attributes, -}; - -static const struct tpacpi_rfk_ops wan_tprfk_ops = { - .get_status = wan_get_status, - .set_status = wan_set_status, -}; - -static void wan_shutdown(void) -{ - /* Order firmware to save current state to NVRAM */ - if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd", - TP_ACPI_WGSV_SAVE_STATE)) - pr_notice("failed to save WWAN state to NVRAM\n"); - else - vdbg_printk(TPACPI_DBG_RFKILL, - "WWAN state saved to NVRAM\n"); -} - -static void wan_exit(void) -{ - tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID); - wan_shutdown(); -} - -static int __init wan_init(struct ibm_init_struct *iibm) -{ - int res; - int status = 0; - - vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, - "initializing wan subdriver\n"); - - TPACPI_ACPIHANDLE_INIT(hkey); - - tp_features.wan = hkey_handle && - acpi_evalf(hkey_handle, &status, "GWAN", "qd"); - - vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, - "wan is %s, status 0x%02x\n", - str_supported(tp_features.wan), - status); - -#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES - if (dbg_wwanemul) { - tp_features.wan = 1; - pr_info("wwan switch emulation enabled\n"); - } else -#endif - if (tp_features.wan && - !(status & TP_ACPI_WANCARD_HWPRESENT)) { - /* no wan hardware present in system */ - tp_features.wan = 0; - dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, - "wan hardware not installed\n"); - } - - if (!tp_features.wan) - return -ENODEV; - - res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID, - &wan_tprfk_ops, - RFKILL_TYPE_WWAN, - TPACPI_RFK_WWAN_SW_NAME, - true); - return res; -} - -/* procfs -------------------------------------------------------------- */ -static int wan_read(struct seq_file *m) -{ - return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, m); -} - -static int wan_write(char *buf) -{ - return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf); -} - -static struct ibm_struct wan_driver_data = { - .name = "wan", - .read = wan_read, - .write = wan_write, - .exit = wan_exit, - .shutdown = wan_shutdown, -}; - -/************************************************************************* - * UWB subdriver - */ - -enum { - /* ACPI GUWB/SUWB bits */ - TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */ - TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */ -}; - -#define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw" - -static int uwb_get_status(void) -{ - int status; - -#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES - if (dbg_uwbemul) - return (tpacpi_uwb_emulstate) ? - TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; -#endif - - if (!acpi_evalf(hkey_handle, &status, "GUWB", "d")) - return -EIO; - - return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ? - TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; -} - -static int uwb_set_status(enum tpacpi_rfkill_state state) -{ - int status; - - vdbg_printk(TPACPI_DBG_RFKILL, "will attempt to %s UWB\n", - str_enable_disable(state == TPACPI_RFK_RADIO_ON)); - -#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES - if (dbg_uwbemul) { - tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON); - return 0; - } -#endif - - if (state == TPACPI_RFK_RADIO_ON) - status = TP_ACPI_UWB_RADIOSSW; - else - status = 0; - - if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status)) - return -EIO; - - return 0; -} - -/* --------------------------------------------------------------------- */ - -static const struct tpacpi_rfk_ops uwb_tprfk_ops = { - .get_status = uwb_get_status, - .set_status = uwb_set_status, -}; - -static void uwb_exit(void) -{ - tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID); -} - -static int __init uwb_init(struct ibm_init_struct *iibm) -{ - int res; - int status = 0; - - vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, - "initializing uwb subdriver\n"); - - TPACPI_ACPIHANDLE_INIT(hkey); - - tp_features.uwb = hkey_handle && - acpi_evalf(hkey_handle, &status, "GUWB", "qd"); - - vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, - "uwb is %s, status 0x%02x\n", - str_supported(tp_features.uwb), - status); - -#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES - if (dbg_uwbemul) { - tp_features.uwb = 1; - pr_info("uwb switch emulation enabled\n"); - } else -#endif - if (tp_features.uwb && - !(status & TP_ACPI_UWB_HWPRESENT)) { - /* no uwb hardware present in system */ - tp_features.uwb = 0; - dbg_printk(TPACPI_DBG_INIT, - "uwb hardware not installed\n"); - } - - if (!tp_features.uwb) - return -ENODEV; - - res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID, - &uwb_tprfk_ops, - RFKILL_TYPE_UWB, - TPACPI_RFK_UWB_SW_NAME, - false); - return res; -} - -static struct ibm_struct uwb_driver_data = { - .name = "uwb", - .exit = uwb_exit, - .flags.experimental = 1, -}; - -/************************************************************************* - * Video subdriver - */ - -#ifdef CONFIG_THINKPAD_ACPI_VIDEO - -enum video_access_mode { - TPACPI_VIDEO_NONE = 0, - TPACPI_VIDEO_570, /* 570 */ - TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */ - TPACPI_VIDEO_NEW, /* all others */ -}; - -enum { /* video status flags, based on VIDEO_570 */ - TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */ - TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */ - TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */ -}; - -enum { /* TPACPI_VIDEO_570 constants */ - TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */ - TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to - * video_status_flags */ - TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */ - TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */ -}; - -static enum video_access_mode video_supported; -static int video_orig_autosw; - -static int video_autosw_get(void); -static int video_autosw_set(int enable); - -TPACPI_HANDLE(vid, root, - "\\_SB.PCI.AGP.VGA", /* 570 */ - "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */ - "\\_SB.PCI0.VID0", /* 770e */ - "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */ - "\\_SB.PCI0.AGP.VGA", /* X100e and a few others */ - "\\_SB.PCI0.AGP.VID", /* all others */ - ); /* R30, R31 */ - -TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */ - -static int __init video_init(struct ibm_init_struct *iibm) -{ - int ivga; - - vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n"); - - TPACPI_ACPIHANDLE_INIT(vid); - if (tpacpi_is_ibm()) - TPACPI_ACPIHANDLE_INIT(vid2); - - if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga) - /* G41, assume IVGA doesn't change */ - vid_handle = vid2_handle; - - if (!vid_handle) - /* video switching not supported on R30, R31 */ - video_supported = TPACPI_VIDEO_NONE; - else if (tpacpi_is_ibm() && - acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd")) - /* 570 */ - video_supported = TPACPI_VIDEO_570; - else if (tpacpi_is_ibm() && - acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd")) - /* 600e/x, 770e, 770x */ - video_supported = TPACPI_VIDEO_770; - else - /* all others */ - video_supported = TPACPI_VIDEO_NEW; - - vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n", - str_supported(video_supported != TPACPI_VIDEO_NONE), - video_supported); - - return (video_supported != TPACPI_VIDEO_NONE) ? 0 : -ENODEV; -} - -static void video_exit(void) -{ - dbg_printk(TPACPI_DBG_EXIT, - "restoring original video autoswitch mode\n"); - if (video_autosw_set(video_orig_autosw)) - pr_err("error while trying to restore original video autoswitch mode\n"); -} - -static int video_outputsw_get(void) -{ - int status = 0; - int i; - - switch (video_supported) { - case TPACPI_VIDEO_570: - if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd", - TP_ACPI_VIDEO_570_PHSCMD)) - return -EIO; - status = i & TP_ACPI_VIDEO_570_PHSMASK; - break; - case TPACPI_VIDEO_770: - if (!acpi_evalf(NULL, &i, "\\VCDL", "d")) - return -EIO; - if (i) - status |= TP_ACPI_VIDEO_S_LCD; - if (!acpi_evalf(NULL, &i, "\\VCDC", "d")) - return -EIO; - if (i) - status |= TP_ACPI_VIDEO_S_CRT; - break; - case TPACPI_VIDEO_NEW: - if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) || - !acpi_evalf(NULL, &i, "\\VCDC", "d")) - return -EIO; - if (i) - status |= TP_ACPI_VIDEO_S_CRT; - - if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) || - !acpi_evalf(NULL, &i, "\\VCDL", "d")) - return -EIO; - if (i) - status |= TP_ACPI_VIDEO_S_LCD; - if (!acpi_evalf(NULL, &i, "\\VCDD", "d")) - return -EIO; - if (i) - status |= TP_ACPI_VIDEO_S_DVI; - break; - default: - return -ENOSYS; - } - - return status; -} - -static int video_outputsw_set(int status) -{ - int autosw; - int res = 0; - - switch (video_supported) { - case TPACPI_VIDEO_570: - res = acpi_evalf(NULL, NULL, - "\\_SB.PHS2", "vdd", - TP_ACPI_VIDEO_570_PHS2CMD, - status | TP_ACPI_VIDEO_570_PHS2SET); - break; - case TPACPI_VIDEO_770: - autosw = video_autosw_get(); - if (autosw < 0) - return autosw; - - res = video_autosw_set(1); - if (res) - return res; - res = acpi_evalf(vid_handle, NULL, - "ASWT", "vdd", status * 0x100, 0); - if (!autosw && video_autosw_set(autosw)) { - pr_err("video auto-switch left enabled due to error\n"); - return -EIO; - } - break; - case TPACPI_VIDEO_NEW: - res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) && - acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1); - break; - default: - return -ENOSYS; - } - - return (res) ? 0 : -EIO; -} - -static int video_autosw_get(void) -{ - int autosw = 0; - - switch (video_supported) { - case TPACPI_VIDEO_570: - if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d")) - return -EIO; - break; - case TPACPI_VIDEO_770: - case TPACPI_VIDEO_NEW: - if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d")) - return -EIO; - break; - default: - return -ENOSYS; - } - - return autosw & 1; -} - -static int video_autosw_set(int enable) -{ - if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable) ? 1 : 0)) - return -EIO; - return 0; -} - -static int video_outputsw_cycle(void) -{ - int autosw = video_autosw_get(); - int res; - - if (autosw < 0) - return autosw; - - switch (video_supported) { - case TPACPI_VIDEO_570: - res = video_autosw_set(1); - if (res) - return res; - res = acpi_evalf(ec_handle, NULL, "_Q16", "v"); - break; - case TPACPI_VIDEO_770: - case TPACPI_VIDEO_NEW: - res = video_autosw_set(1); - if (res) - return res; - res = acpi_evalf(vid_handle, NULL, "VSWT", "v"); - break; - default: - return -ENOSYS; - } - if (!autosw && video_autosw_set(autosw)) { - pr_err("video auto-switch left enabled due to error\n"); - return -EIO; - } - - return (res) ? 0 : -EIO; -} - -static int video_expand_toggle(void) -{ - switch (video_supported) { - case TPACPI_VIDEO_570: - return acpi_evalf(ec_handle, NULL, "_Q17", "v") ? - 0 : -EIO; - case TPACPI_VIDEO_770: - return acpi_evalf(vid_handle, NULL, "VEXP", "v") ? - 0 : -EIO; - case TPACPI_VIDEO_NEW: - return acpi_evalf(NULL, NULL, "\\VEXP", "v") ? - 0 : -EIO; - default: - return -ENOSYS; - } - /* not reached */ -} - -static int video_read(struct seq_file *m) -{ - int status, autosw; - - if (video_supported == TPACPI_VIDEO_NONE) { - seq_printf(m, "status:\t\tnot supported\n"); - return 0; - } - - /* Even reads can crash X.org, so... */ - if (!capable(CAP_SYS_ADMIN)) - return -EPERM; - - status = video_outputsw_get(); - if (status < 0) - return status; - - autosw = video_autosw_get(); - if (autosw < 0) - return autosw; - - seq_printf(m, "status:\t\tsupported\n"); - seq_printf(m, "lcd:\t\t%s\n", str_enabled_disabled(status & BIT(0))); - seq_printf(m, "crt:\t\t%s\n", str_enabled_disabled(status & BIT(1))); - if (video_supported == TPACPI_VIDEO_NEW) - seq_printf(m, "dvi:\t\t%s\n", str_enabled_disabled(status & BIT(3))); - seq_printf(m, "auto:\t\t%s\n", str_enabled_disabled(autosw & BIT(0))); - seq_printf(m, "commands:\tlcd_enable, lcd_disable\n"); - seq_printf(m, "commands:\tcrt_enable, crt_disable\n"); - if (video_supported == TPACPI_VIDEO_NEW) - seq_printf(m, "commands:\tdvi_enable, dvi_disable\n"); - seq_printf(m, "commands:\tauto_enable, auto_disable\n"); - seq_printf(m, "commands:\tvideo_switch, expand_toggle\n"); - - return 0; -} - -static int video_write(char *buf) -{ - char *cmd; - int enable, disable, status; - int res; - - if (video_supported == TPACPI_VIDEO_NONE) - return -ENODEV; - - /* Even reads can crash X.org, let alone writes... */ - if (!capable(CAP_SYS_ADMIN)) - return -EPERM; - - enable = 0; - disable = 0; - - while ((cmd = strsep(&buf, ","))) { - if (strstarts(cmd, "lcd_enable")) { - enable |= TP_ACPI_VIDEO_S_LCD; - } else if (strstarts(cmd, "lcd_disable")) { - disable |= TP_ACPI_VIDEO_S_LCD; - } else if (strstarts(cmd, "crt_enable")) { - enable |= TP_ACPI_VIDEO_S_CRT; - } else if (strstarts(cmd, "crt_disable")) { - disable |= TP_ACPI_VIDEO_S_CRT; - } else if (video_supported == TPACPI_VIDEO_NEW && - strstarts(cmd, "dvi_enable")) { - enable |= TP_ACPI_VIDEO_S_DVI; - } else if (video_supported == TPACPI_VIDEO_NEW && - strstarts(cmd, "dvi_disable")) { - disable |= TP_ACPI_VIDEO_S_DVI; - } else if (strstarts(cmd, "auto_enable")) { - res = video_autosw_set(1); - if (res) - return res; - } else if (strstarts(cmd, "auto_disable")) { - res = video_autosw_set(0); - if (res) - return res; - } else if (strstarts(cmd, "video_switch")) { - res = video_outputsw_cycle(); - if (res) - return res; - } else if (strstarts(cmd, "expand_toggle")) { - res = video_expand_toggle(); - if (res) - return res; - } else - return -EINVAL; - } - - if (enable || disable) { - status = video_outputsw_get(); - if (status < 0) - return status; - res = video_outputsw_set((status & ~disable) | enable); - if (res) - return res; - } - - return 0; -} - -static struct ibm_struct video_driver_data = { - .name = "video", - .read = video_read, - .write = video_write, - .exit = video_exit, -}; - -#endif /* CONFIG_THINKPAD_ACPI_VIDEO */ - -/************************************************************************* - * Keyboard backlight subdriver - */ - -static enum led_brightness kbdlight_brightness; -static DEFINE_MUTEX(kbdlight_mutex); - -static int kbdlight_set_level(int level) -{ - int ret = 0; - - if (!hkey_handle) - return -ENXIO; - - mutex_lock(&kbdlight_mutex); - - if (!acpi_evalf(hkey_handle, NULL, "MLCS", "dd", level)) - ret = -EIO; - else - kbdlight_brightness = level; - - mutex_unlock(&kbdlight_mutex); - - return ret; -} - -static int kbdlight_get_level(void) -{ - int status = 0; - - if (!hkey_handle) - return -ENXIO; - - if (!acpi_evalf(hkey_handle, &status, "MLCG", "dd", 0)) - return -EIO; - - if (status < 0) - return status; - - return status & 0x3; -} - -static bool kbdlight_is_supported(void) -{ - int status = 0; - - if (!hkey_handle) - return false; - - if (!acpi_has_method(hkey_handle, "MLCG")) { - vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG is unavailable\n"); - return false; - } - - if (!acpi_evalf(hkey_handle, &status, "MLCG", "qdd", 0)) { - vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG failed\n"); - return false; - } - - if (status < 0) { - vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG err: %d\n", status); - return false; - } - - vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG returned 0x%x\n", status); - /* - * Guessed test for keyboard backlight: - * - * Machines with backlight keyboard return: - * b010100000010000000XX - ThinkPad X1 Carbon 3rd - * b110100010010000000XX - ThinkPad x230 - * b010100000010000000XX - ThinkPad x240 - * b010100000010000000XX - ThinkPad W541 - * (XX is current backlight level) - * - * Machines without backlight keyboard return: - * b10100001000000000000 - ThinkPad x230 - * b10110001000000000000 - ThinkPad E430 - * b00000000000000000000 - ThinkPad E450 - * - * Candidate BITs for detection test (XOR): - * b01000000001000000000 - * ^ - */ - return status & BIT(9); -} - -static int kbdlight_sysfs_set(struct led_classdev *led_cdev, - enum led_brightness brightness) -{ - return kbdlight_set_level(brightness); -} - -static enum led_brightness kbdlight_sysfs_get(struct led_classdev *led_cdev) -{ - int level; - - level = kbdlight_get_level(); - if (level < 0) - return 0; - - return level; -} - -static struct tpacpi_led_classdev tpacpi_led_kbdlight = { - .led_classdev = { - .name = "tpacpi::kbd_backlight", - .max_brightness = 2, - .flags = LED_BRIGHT_HW_CHANGED, - .brightness_set_blocking = &kbdlight_sysfs_set, - .brightness_get = &kbdlight_sysfs_get, - } -}; - -static int __init kbdlight_init(struct ibm_init_struct *iibm) -{ - int rc; - - vdbg_printk(TPACPI_DBG_INIT, "initializing kbdlight subdriver\n"); - - TPACPI_ACPIHANDLE_INIT(hkey); - - if (!kbdlight_is_supported()) { - tp_features.kbdlight = 0; - vdbg_printk(TPACPI_DBG_INIT, "kbdlight is unsupported\n"); - return -ENODEV; - } - - kbdlight_brightness = kbdlight_sysfs_get(NULL); - tp_features.kbdlight = 1; - - rc = led_classdev_register(&tpacpi_pdev->dev, - &tpacpi_led_kbdlight.led_classdev); - if (rc < 0) { - tp_features.kbdlight = 0; - return rc; - } - - tpacpi_hotkey_driver_mask_set(hotkey_driver_mask | - TP_ACPI_HKEY_KBD_LIGHT_MASK); - return 0; -} - -static void kbdlight_exit(void) -{ - led_classdev_unregister(&tpacpi_led_kbdlight.led_classdev); -} - -static int kbdlight_set_level_and_update(int level) -{ - int ret; - struct led_classdev *led_cdev; - - ret = kbdlight_set_level(level); - led_cdev = &tpacpi_led_kbdlight.led_classdev; - - if (ret == 0 && !(led_cdev->flags & LED_SUSPENDED)) - led_cdev->brightness = level; - - return ret; -} - -static int kbdlight_read(struct seq_file *m) -{ - int level; - - if (!tp_features.kbdlight) { - seq_printf(m, "status:\t\tnot supported\n"); - } else { - level = kbdlight_get_level(); - if (level < 0) - seq_printf(m, "status:\t\terror %d\n", level); - else - seq_printf(m, "status:\t\t%d\n", level); - seq_printf(m, "commands:\t0, 1, 2\n"); - } - - return 0; -} - -static int kbdlight_write(char *buf) -{ - char *cmd; - int res, level = -EINVAL; - - if (!tp_features.kbdlight) - return -ENODEV; - - while ((cmd = strsep(&buf, ","))) { - res = kstrtoint(cmd, 10, &level); - if (res < 0) - return res; - } - - if (level >= 3 || level < 0) - return -EINVAL; - - return kbdlight_set_level_and_update(level); -} - -static void kbdlight_suspend(void) -{ - struct led_classdev *led_cdev; - - if (!tp_features.kbdlight) - return; - - led_cdev = &tpacpi_led_kbdlight.led_classdev; - led_update_brightness(led_cdev); - led_classdev_suspend(led_cdev); -} - -static void kbdlight_resume(void) -{ - if (!tp_features.kbdlight) - return; - - led_classdev_resume(&tpacpi_led_kbdlight.led_classdev); -} - -static struct ibm_struct kbdlight_driver_data = { - .name = "kbdlight", - .read = kbdlight_read, - .write = kbdlight_write, - .suspend = kbdlight_suspend, - .resume = kbdlight_resume, - .exit = kbdlight_exit, -}; - -/************************************************************************* - * Light (thinklight) subdriver - */ - -TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */ -TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */ - -static int light_get_status(void) -{ - int status = 0; - - if (tp_features.light_status) { - if (!acpi_evalf(ec_handle, &status, "KBLT", "d")) - return -EIO; - return (!!status); - } - - return -ENXIO; -} - -static int light_set_status(int status) -{ - int rc; - - if (tp_features.light) { - if (cmos_handle) { - rc = acpi_evalf(cmos_handle, NULL, NULL, "vd", - (status) ? - TP_CMOS_THINKLIGHT_ON : - TP_CMOS_THINKLIGHT_OFF); - } else { - rc = acpi_evalf(lght_handle, NULL, NULL, "vd", - (status) ? 1 : 0); - } - return (rc) ? 0 : -EIO; - } - - return -ENXIO; -} - -static int light_sysfs_set(struct led_classdev *led_cdev, - enum led_brightness brightness) -{ - return light_set_status((brightness != LED_OFF) ? - TPACPI_LED_ON : TPACPI_LED_OFF); -} - -static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev) -{ - return (light_get_status() == 1) ? LED_ON : LED_OFF; -} - -static struct tpacpi_led_classdev tpacpi_led_thinklight = { - .led_classdev = { - .name = "tpacpi::thinklight", - .max_brightness = 1, - .brightness_set_blocking = &light_sysfs_set, - .brightness_get = &light_sysfs_get, - } -}; - -static int __init light_init(struct ibm_init_struct *iibm) -{ - int rc; - - vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n"); - - if (tpacpi_is_ibm()) { - TPACPI_ACPIHANDLE_INIT(ledb); - TPACPI_ACPIHANDLE_INIT(lght); - } - TPACPI_ACPIHANDLE_INIT(cmos); - - /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */ - tp_features.light = (cmos_handle || lght_handle) && !ledb_handle; - - if (tp_features.light) - /* light status not supported on - 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */ - tp_features.light_status = - acpi_evalf(ec_handle, NULL, "KBLT", "qv"); - - vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n", - str_supported(tp_features.light), - str_supported(tp_features.light_status)); - - if (!tp_features.light) - return -ENODEV; - - rc = led_classdev_register(&tpacpi_pdev->dev, - &tpacpi_led_thinklight.led_classdev); - - if (rc < 0) { - tp_features.light = 0; - tp_features.light_status = 0; - } else { - rc = 0; - } - - return rc; -} - -static void light_exit(void) -{ - led_classdev_unregister(&tpacpi_led_thinklight.led_classdev); -} - -static int light_read(struct seq_file *m) -{ - int status; - - if (!tp_features.light) { - seq_printf(m, "status:\t\tnot supported\n"); - } else if (!tp_features.light_status) { - seq_printf(m, "status:\t\tunknown\n"); - seq_printf(m, "commands:\ton, off\n"); - } else { - status = light_get_status(); - if (status < 0) - return status; - seq_printf(m, "status:\t\t%s\n", str_on_off(status & BIT(0))); - seq_printf(m, "commands:\ton, off\n"); - } - - return 0; -} - -static int light_write(char *buf) -{ - char *cmd; - int newstatus = 0; - - if (!tp_features.light) - return -ENODEV; - - while ((cmd = strsep(&buf, ","))) { - if (strstarts(cmd, "on")) { - newstatus = 1; - } else if (strstarts(cmd, "off")) { - newstatus = 0; - } else - return -EINVAL; - } - - return light_set_status(newstatus); -} - -static struct ibm_struct light_driver_data = { - .name = "light", - .read = light_read, - .write = light_write, - .exit = light_exit, -}; - -/************************************************************************* - * CMOS subdriver - */ - -/* sysfs cmos_command -------------------------------------------------- */ -static ssize_t cmos_command_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - unsigned long cmos_cmd; - int res; - - if (parse_strtoul(buf, 21, &cmos_cmd)) - return -EINVAL; - - res = issue_thinkpad_cmos_command(cmos_cmd); - return (res) ? res : count; -} - -static DEVICE_ATTR_WO(cmos_command); - -static struct attribute *cmos_attributes[] = { - &dev_attr_cmos_command.attr, - NULL -}; - -static umode_t cmos_attr_is_visible(struct kobject *kobj, - struct attribute *attr, int n) -{ - return cmos_handle ? attr->mode : 0; -} - -static const struct attribute_group cmos_attr_group = { - .is_visible = cmos_attr_is_visible, - .attrs = cmos_attributes, -}; - -/* --------------------------------------------------------------------- */ - -static int __init cmos_init(struct ibm_init_struct *iibm) -{ - vdbg_printk(TPACPI_DBG_INIT, - "initializing cmos commands subdriver\n"); - - TPACPI_ACPIHANDLE_INIT(cmos); - - vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n", - str_supported(cmos_handle != NULL)); - - return cmos_handle ? 0 : -ENODEV; -} - -static int cmos_read(struct seq_file *m) -{ - /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, - R30, R31, T20-22, X20-21 */ - if (!cmos_handle) - seq_printf(m, "status:\t\tnot supported\n"); - else { - seq_printf(m, "status:\t\tsupported\n"); - seq_printf(m, "commands:\t<cmd> (<cmd> is 0-21)\n"); - } - - return 0; -} - -static int cmos_write(char *buf) -{ - char *cmd; - int cmos_cmd, res; - - while ((cmd = strsep(&buf, ","))) { - if (sscanf(cmd, "%u", &cmos_cmd) == 1 && - cmos_cmd >= 0 && cmos_cmd <= 21) { - /* cmos_cmd set */ - } else - return -EINVAL; - - res = issue_thinkpad_cmos_command(cmos_cmd); - if (res) - return res; - } - - return 0; -} - -static struct ibm_struct cmos_driver_data = { - .name = "cmos", - .read = cmos_read, - .write = cmos_write, -}; - -/************************************************************************* - * LED subdriver - */ - -enum led_access_mode { - TPACPI_LED_NONE = 0, - TPACPI_LED_570, /* 570 */ - TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ - TPACPI_LED_NEW, /* all others */ -}; - -enum { /* For TPACPI_LED_OLD */ - TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */ - TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */ - TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */ -}; - -static enum led_access_mode led_supported; - -static acpi_handle led_handle; - -#define TPACPI_LED_NUMLEDS 16 -static struct tpacpi_led_classdev *tpacpi_leds; -static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS]; -static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = { - /* there's a limit of 19 chars + NULL before 2.6.26 */ - "tpacpi::power", - "tpacpi:orange:batt", - "tpacpi:green:batt", - "tpacpi::dock_active", - "tpacpi::bay_active", - "tpacpi::dock_batt", - "tpacpi::unknown_led", - "tpacpi::standby", - "tpacpi::dock_status1", - "tpacpi::dock_status2", - "tpacpi::lid_logo_dot", - "tpacpi::unknown_led3", - "tpacpi::thinkvantage", -}; -#define TPACPI_SAFE_LEDS 0x1481U - -static inline bool tpacpi_is_led_restricted(const unsigned int led) -{ -#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS - return false; -#else - return (1U & (TPACPI_SAFE_LEDS >> led)) == 0; -#endif -} - -static int led_get_status(const unsigned int led) -{ - int status; - enum led_status_t led_s; - - switch (led_supported) { - case TPACPI_LED_570: - if (!acpi_evalf(ec_handle, - &status, "GLED", "dd", 1 << led)) - return -EIO; - led_s = (status == 0) ? - TPACPI_LED_OFF : - ((status == 1) ? - TPACPI_LED_ON : - TPACPI_LED_BLINK); - tpacpi_led_state_cache[led] = led_s; - return led_s; - default: - return -ENXIO; - } - - /* not reached */ -} - -static int led_set_status(const unsigned int led, - const enum led_status_t ledstatus) -{ - /* off, on, blink. Index is led_status_t */ - static const unsigned int led_sled_arg1[] = { 0, 1, 3 }; - static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 }; - - int rc = 0; - - switch (led_supported) { - case TPACPI_LED_570: - /* 570 */ - if (unlikely(led > 7)) - return -EINVAL; - if (unlikely(tpacpi_is_led_restricted(led))) - return -EPERM; - if (!acpi_evalf(led_handle, NULL, NULL, "vdd", - (1 << led), led_sled_arg1[ledstatus])) - return -EIO; - break; - case TPACPI_LED_OLD: - /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */ - if (unlikely(led > 7)) - return -EINVAL; - if (unlikely(tpacpi_is_led_restricted(led))) - return -EPERM; - rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led)); - if (rc >= 0) - rc = ec_write(TPACPI_LED_EC_HLBL, - (ledstatus == TPACPI_LED_BLINK) << led); - if (rc >= 0) - rc = ec_write(TPACPI_LED_EC_HLCL, - (ledstatus != TPACPI_LED_OFF) << led); - break; - case TPACPI_LED_NEW: - /* all others */ - if (unlikely(led >= TPACPI_LED_NUMLEDS)) - return -EINVAL; - if (unlikely(tpacpi_is_led_restricted(led))) - return -EPERM; - if (!acpi_evalf(led_handle, NULL, NULL, "vdd", - led, led_led_arg1[ledstatus])) - return -EIO; - break; - default: - return -ENXIO; - } - - if (!rc) - tpacpi_led_state_cache[led] = ledstatus; - - return rc; -} - -static int led_sysfs_set(struct led_classdev *led_cdev, - enum led_brightness brightness) -{ - struct tpacpi_led_classdev *data = container_of(led_cdev, - struct tpacpi_led_classdev, led_classdev); - enum led_status_t new_state; - - if (brightness == LED_OFF) - new_state = TPACPI_LED_OFF; - else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK) - new_state = TPACPI_LED_ON; - else - new_state = TPACPI_LED_BLINK; - - return led_set_status(data->led, new_state); -} - -static int led_sysfs_blink_set(struct led_classdev *led_cdev, - unsigned long *delay_on, unsigned long *delay_off) -{ - struct tpacpi_led_classdev *data = container_of(led_cdev, - struct tpacpi_led_classdev, led_classdev); - - /* Can we choose the flash rate? */ - if (*delay_on == 0 && *delay_off == 0) { - /* yes. set them to the hardware blink rate (1 Hz) */ - *delay_on = 500; /* ms */ - *delay_off = 500; /* ms */ - } else if ((*delay_on != 500) || (*delay_off != 500)) - return -EINVAL; - - return led_set_status(data->led, TPACPI_LED_BLINK); -} - -static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev) -{ - int rc; - - struct tpacpi_led_classdev *data = container_of(led_cdev, - struct tpacpi_led_classdev, led_classdev); - - rc = led_get_status(data->led); - - if (rc == TPACPI_LED_OFF || rc < 0) - rc = LED_OFF; /* no error handling in led class :( */ - else - rc = LED_FULL; - - return rc; -} - -static void led_exit(void) -{ - unsigned int i; - - for (i = 0; i < TPACPI_LED_NUMLEDS; i++) - led_classdev_unregister(&tpacpi_leds[i].led_classdev); - - kfree(tpacpi_leds); -} - -static int __init tpacpi_init_led(unsigned int led) -{ - /* LEDs with no name don't get registered */ - if (!tpacpi_led_names[led]) - return 0; - - tpacpi_leds[led].led_classdev.brightness_set_blocking = &led_sysfs_set; - tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set; - if (led_supported == TPACPI_LED_570) - tpacpi_leds[led].led_classdev.brightness_get = &led_sysfs_get; - - tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led]; - tpacpi_leds[led].led_classdev.flags = LED_RETAIN_AT_SHUTDOWN; - tpacpi_leds[led].led = led; - - return led_classdev_register(&tpacpi_pdev->dev, &tpacpi_leds[led].led_classdev); -} - -static const struct tpacpi_quirk led_useful_qtable[] __initconst = { - TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */ - TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */ - TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */ - - TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */ - TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */ - TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */ - TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */ - TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */ - TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */ - TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */ - TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */ - - TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */ - TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */ - TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */ - TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */ - TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */ - - TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */ - TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */ - TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */ - TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */ - - /* (1) - may have excess leds enabled on MSB */ - - /* Defaults (order matters, keep last, don't reorder!) */ - { /* Lenovo */ - .vendor = PCI_VENDOR_ID_LENOVO, - .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, - .quirks = 0x1fffU, - }, - { /* IBM ThinkPads with no EC version string */ - .vendor = PCI_VENDOR_ID_IBM, - .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN, - .quirks = 0x00ffU, - }, - { /* IBM ThinkPads with EC version string */ - .vendor = PCI_VENDOR_ID_IBM, - .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, - .quirks = 0x00bfU, - }, -}; - -static enum led_access_mode __init led_init_detect_mode(void) -{ - acpi_status status; - - if (tpacpi_is_ibm()) { - /* 570 */ - status = acpi_get_handle(ec_handle, "SLED", &led_handle); - if (ACPI_SUCCESS(status)) - return TPACPI_LED_570; - - /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ - status = acpi_get_handle(ec_handle, "SYSL", &led_handle); - if (ACPI_SUCCESS(status)) - return TPACPI_LED_OLD; - } - - /* most others */ - status = acpi_get_handle(ec_handle, "LED", &led_handle); - if (ACPI_SUCCESS(status)) - return TPACPI_LED_NEW; - - /* R30, R31, and unknown firmwares */ - led_handle = NULL; - return TPACPI_LED_NONE; -} - -static int __init led_init(struct ibm_init_struct *iibm) -{ - unsigned int i; - int rc; - unsigned long useful_leds; - - vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n"); - - led_supported = led_init_detect_mode(); - - if (led_supported != TPACPI_LED_NONE) { - useful_leds = tpacpi_check_quirks(led_useful_qtable, - ARRAY_SIZE(led_useful_qtable)); - - if (!useful_leds) { - led_handle = NULL; - led_supported = TPACPI_LED_NONE; - } - } - - vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n", - str_supported(led_supported), led_supported); - - if (led_supported == TPACPI_LED_NONE) - return -ENODEV; - - tpacpi_leds = kcalloc(TPACPI_LED_NUMLEDS, sizeof(*tpacpi_leds), - GFP_KERNEL); - if (!tpacpi_leds) { - pr_err("Out of memory for LED data\n"); - return -ENOMEM; - } - - for (i = 0; i < TPACPI_LED_NUMLEDS; i++) { - tpacpi_leds[i].led = -1; - - if (!tpacpi_is_led_restricted(i) && test_bit(i, &useful_leds)) { - rc = tpacpi_init_led(i); - if (rc < 0) { - led_exit(); - return rc; - } - } - } - -#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS - pr_notice("warning: userspace override of important firmware LEDs is enabled\n"); -#endif - return 0; -} - -#define str_led_status(s) ((s) >= TPACPI_LED_BLINK ? "blinking" : str_on_off(s)) - -static int led_read(struct seq_file *m) -{ - if (!led_supported) { - seq_printf(m, "status:\t\tnot supported\n"); - return 0; - } - seq_printf(m, "status:\t\tsupported\n"); - - if (led_supported == TPACPI_LED_570) { - /* 570 */ - int i, status; - for (i = 0; i < 8; i++) { - status = led_get_status(i); - if (status < 0) - return -EIO; - seq_printf(m, "%d:\t\t%s\n", i, str_led_status(status)); - } - } - - seq_printf(m, "commands:\t<led> on, <led> off, <led> blink (<led> is 0-15)\n"); - - return 0; -} - -static int led_write(char *buf) -{ - char *cmd; - int led, rc; - enum led_status_t s; - - if (!led_supported) - return -ENODEV; - - while ((cmd = strsep(&buf, ","))) { - if (sscanf(cmd, "%d", &led) != 1) - return -EINVAL; - - if (led < 0 || led > (TPACPI_LED_NUMLEDS - 1)) - return -ENODEV; - - if (tpacpi_leds[led].led < 0) - return -ENODEV; - - if (strstr(cmd, "off")) { - s = TPACPI_LED_OFF; - } else if (strstr(cmd, "on")) { - s = TPACPI_LED_ON; - } else if (strstr(cmd, "blink")) { - s = TPACPI_LED_BLINK; - } else { - return -EINVAL; - } - - rc = led_set_status(led, s); - if (rc < 0) - return rc; - } - - return 0; -} - -static struct ibm_struct led_driver_data = { - .name = "led", - .read = led_read, - .write = led_write, - .exit = led_exit, -}; - -/************************************************************************* - * Beep subdriver - */ - -TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */ - -#define TPACPI_BEEP_Q1 0x0001 - -static const struct tpacpi_quirk beep_quirk_table[] __initconst = { - TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */ - TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */ -}; - -static int __init beep_init(struct ibm_init_struct *iibm) -{ - unsigned long quirks; - - vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n"); - - TPACPI_ACPIHANDLE_INIT(beep); - - vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n", - str_supported(beep_handle != NULL)); - - quirks = tpacpi_check_quirks(beep_quirk_table, - ARRAY_SIZE(beep_quirk_table)); - - tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1); - - return (beep_handle) ? 0 : -ENODEV; -} - -static int beep_read(struct seq_file *m) -{ - if (!beep_handle) - seq_printf(m, "status:\t\tnot supported\n"); - else { - seq_printf(m, "status:\t\tsupported\n"); - seq_printf(m, "commands:\t<cmd> (<cmd> is 0-17)\n"); - } - - return 0; -} - -static int beep_write(char *buf) -{ - char *cmd; - int beep_cmd; - - if (!beep_handle) - return -ENODEV; - - while ((cmd = strsep(&buf, ","))) { - if (sscanf(cmd, "%u", &beep_cmd) == 1 && - beep_cmd >= 0 && beep_cmd <= 17) { - /* beep_cmd set */ - } else - return -EINVAL; - if (tp_features.beep_needs_two_args) { - if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", - beep_cmd, 0)) - return -EIO; - } else { - if (!acpi_evalf(beep_handle, NULL, NULL, "vd", - beep_cmd)) - return -EIO; - } - } - - return 0; -} - -static struct ibm_struct beep_driver_data = { - .name = "beep", - .read = beep_read, - .write = beep_write, -}; - -/************************************************************************* - * Thermal subdriver - */ - -enum thermal_access_mode { - TPACPI_THERMAL_NONE = 0, /* No thermal support */ - TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */ - TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */ - TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */ - TPACPI_THERMAL_TPEC_12, /* Use ACPI EC regs, 12 sensors */ - TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */ -}; - -enum { /* TPACPI_THERMAL_TPEC_* */ - TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */ - TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */ - TP_EC_THERMAL_TMP0_NS = 0xA8, /* ACPI EC Non-Standard regs TMP 0..7 */ - TP_EC_THERMAL_TMP8_NS = 0xB8, /* ACPI EC Non-standard regs TMP 8..11 */ - TP_EC_FUNCREV = 0xEF, /* ACPI EC Functional revision */ - TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */ - - TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */ -}; - - -#define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */ -struct ibm_thermal_sensors_struct { - s32 temp[TPACPI_MAX_THERMAL_SENSORS]; -}; - -static const struct tpacpi_quirk thermal_quirk_table[] __initconst = { - /* Non-standard address for thermal registers on some ThinkPads */ - TPACPI_Q_LNV3('R', '1', 'F', true), /* L13 Yoga Gen 2 */ - TPACPI_Q_LNV3('N', '2', 'U', true), /* X13 Yoga Gen 2*/ - TPACPI_Q_LNV3('R', '0', 'R', true), /* L380 */ - TPACPI_Q_LNV3('R', '1', '5', true), /* L13 Yoga Gen 1*/ - TPACPI_Q_LNV3('R', '1', '0', true), /* L390 */ - TPACPI_Q_LNV3('N', '2', 'L', true), /* X13 Yoga Gen 1*/ - TPACPI_Q_LNV3('R', '0', 'T', true), /* 11e Gen5 GL*/ - TPACPI_Q_LNV3('R', '1', 'D', true), /* 11e Gen5 GL-R*/ - TPACPI_Q_LNV3('R', '0', 'V', true), /* 11e Gen5 KL-Y*/ -}; - -static enum thermal_access_mode thermal_read_mode; -static bool thermal_use_labels; -static bool thermal_with_ns_address; /* Non-standard thermal reg address */ - -/* Function to check thermal read mode */ -static enum thermal_access_mode __init thermal_read_mode_check(void) -{ - u8 t, ta1, ta2, ver = 0; - int i; - int acpi_tmp7; - - acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv"); - - if (thinkpad_id.ec_model) { - /* - * Direct EC access mode: sensors at registers 0x78-0x7F, - * 0xC0-0xC7. Registers return 0x00 for non-implemented, - * thermal sensors return 0x80 when not available. - * - * In some special cases (when Power Supply ID is 0xC2) - * above rule causes thermal control issues. Offset 0xEF - * determines EC version. 0xC0-0xC7 are not thermal registers - * in Ver 3. - */ - if (!acpi_ec_read(TP_EC_FUNCREV, &ver)) - pr_warn("Thinkpad ACPI EC unable to access EC version\n"); - - /* Quirks to check non-standard EC */ - thermal_with_ns_address = tpacpi_check_quirks(thermal_quirk_table, - ARRAY_SIZE(thermal_quirk_table)); - - /* Support for Thinkpads with non-standard address */ - if (thermal_with_ns_address) { - pr_info("ECFW with non-standard thermal registers found\n"); - return TPACPI_THERMAL_TPEC_12; - } - - ta1 = ta2 = 0; - for (i = 0; i < 8; i++) { - if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) { - ta1 |= t; - } else { - ta1 = 0; - break; - } - if (ver < 3) { - if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) { - ta2 |= t; - } else { - ta1 = 0; - break; - } - } - } - - if (ta1 == 0) { - /* This is sheer paranoia, but we handle it anyway */ - if (acpi_tmp7) { - pr_err("ThinkPad ACPI EC access misbehaving, falling back to ACPI TMPx access mode\n"); - return TPACPI_THERMAL_ACPI_TMP07; - } - pr_err("ThinkPad ACPI EC access misbehaving, disabling thermal sensors access\n"); - return TPACPI_THERMAL_NONE; - } - - if (ver >= 3) { - thermal_use_labels = true; - return TPACPI_THERMAL_TPEC_8; - } - - return (ta2 != 0) ? TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8; - } - - if (acpi_tmp7) { - if (tpacpi_is_ibm() && acpi_evalf(ec_handle, NULL, "UPDT", "qv")) { - /* 600e/x, 770e, 770x */ - return TPACPI_THERMAL_ACPI_UPDT; - } - /* IBM/LENOVO DSDT EC.TMPx access, max 8 sensors */ - return TPACPI_THERMAL_ACPI_TMP07; - } - - /* temperatures not supported on 570, G4x, R30, R31, R32 */ - return TPACPI_THERMAL_NONE; -} - -/* idx is zero-based */ -static int thermal_get_sensor(int idx, s32 *value) -{ - int t; - s8 tmp; - char tmpi[5]; - - t = TP_EC_THERMAL_TMP0; - - switch (thermal_read_mode) { -#if TPACPI_MAX_THERMAL_SENSORS >= 16 - case TPACPI_THERMAL_TPEC_16: - if (idx >= 8 && idx <= 15) { - t = TP_EC_THERMAL_TMP8; - idx -= 8; - } -#endif - fallthrough; - case TPACPI_THERMAL_TPEC_8: - if (idx <= 7) { - if (!acpi_ec_read(t + idx, &tmp)) - return -EIO; - *value = tmp * 1000; - return 0; - } - break; - - /* The Non-standard EC uses 12 Thermal areas */ - case TPACPI_THERMAL_TPEC_12: - if (idx >= 12) - return -EINVAL; - - t = idx < 8 ? TP_EC_THERMAL_TMP0_NS + idx : - TP_EC_THERMAL_TMP8_NS + (idx - 8); - - if (!acpi_ec_read(t, &tmp)) - return -EIO; - - *value = tmp * MILLIDEGREE_PER_DEGREE; - return 0; - - case TPACPI_THERMAL_ACPI_UPDT: - if (idx <= 7) { - snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); - if (!acpi_evalf(ec_handle, NULL, "UPDT", "v")) - return -EIO; - if (!acpi_evalf(ec_handle, &t, tmpi, "d")) - return -EIO; - *value = (t - 2732) * 100; - return 0; - } - break; - - case TPACPI_THERMAL_ACPI_TMP07: - if (idx <= 7) { - snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); - if (!acpi_evalf(ec_handle, &t, tmpi, "d")) - return -EIO; - if (t > 127 || t < -127) - t = TP_EC_THERMAL_TMP_NA; - *value = t * 1000; - return 0; - } - break; - - case TPACPI_THERMAL_NONE: - default: - return -ENOSYS; - } - - return -EINVAL; -} - -static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s) -{ - int res, i, n; - - if (!s) - return -EINVAL; - - if (thermal_read_mode == TPACPI_THERMAL_TPEC_16) - n = 16; - else if (thermal_read_mode == TPACPI_THERMAL_TPEC_12) - n = 12; - else - n = 8; - - for (i = 0 ; i < n; i++) { - res = thermal_get_sensor(i, &s->temp[i]); - if (res) - return res; - } - - return n; -} - -static void thermal_dump_all_sensors(void) -{ - int n, i; - struct ibm_thermal_sensors_struct t; - - n = thermal_get_sensors(&t); - if (n <= 0) - return; - - pr_notice("temperatures (Celsius):"); - - for (i = 0; i < n; i++) { - if (t.temp[i] != TPACPI_THERMAL_SENSOR_NA) - pr_cont(" %d", (int)(t.temp[i] / 1000)); - else - pr_cont(" N/A"); - } - - pr_cont("\n"); -} - -/* sysfs temp##_input -------------------------------------------------- */ - -static ssize_t thermal_temp_input_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct sensor_device_attribute *sensor_attr = - to_sensor_dev_attr(attr); - int idx = sensor_attr->index; - s32 value; - int res; - - res = thermal_get_sensor(idx, &value); - if (res) - return res; - if (value == TPACPI_THERMAL_SENSOR_NA) - return -ENXIO; - - return sysfs_emit(buf, "%d\n", value); -} - -#define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \ - SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \ - thermal_temp_input_show, NULL, _idxB) - -static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = { - THERMAL_SENSOR_ATTR_TEMP(1, 0), - THERMAL_SENSOR_ATTR_TEMP(2, 1), - THERMAL_SENSOR_ATTR_TEMP(3, 2), - THERMAL_SENSOR_ATTR_TEMP(4, 3), - THERMAL_SENSOR_ATTR_TEMP(5, 4), - THERMAL_SENSOR_ATTR_TEMP(6, 5), - THERMAL_SENSOR_ATTR_TEMP(7, 6), - THERMAL_SENSOR_ATTR_TEMP(8, 7), - THERMAL_SENSOR_ATTR_TEMP(9, 8), - THERMAL_SENSOR_ATTR_TEMP(10, 9), - THERMAL_SENSOR_ATTR_TEMP(11, 10), - THERMAL_SENSOR_ATTR_TEMP(12, 11), - THERMAL_SENSOR_ATTR_TEMP(13, 12), - THERMAL_SENSOR_ATTR_TEMP(14, 13), - THERMAL_SENSOR_ATTR_TEMP(15, 14), - THERMAL_SENSOR_ATTR_TEMP(16, 15), -}; - -#define THERMAL_ATTRS(X) \ - &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr - -static struct attribute *thermal_temp_input_attr[] = { - THERMAL_ATTRS(0), - THERMAL_ATTRS(1), - THERMAL_ATTRS(2), - THERMAL_ATTRS(3), - THERMAL_ATTRS(4), - THERMAL_ATTRS(5), - THERMAL_ATTRS(6), - THERMAL_ATTRS(7), - THERMAL_ATTRS(8), - THERMAL_ATTRS(9), - THERMAL_ATTRS(10), - THERMAL_ATTRS(11), - THERMAL_ATTRS(12), - THERMAL_ATTRS(13), - THERMAL_ATTRS(14), - THERMAL_ATTRS(15), - NULL -}; - -#define to_dev_attr(_attr) container_of(_attr, struct device_attribute, attr) - -static umode_t thermal_attr_is_visible(struct kobject *kobj, - struct attribute *attr, int n) -{ - struct device_attribute *dev_attr = to_dev_attr(attr); - struct sensor_device_attribute *sensor_attr = - to_sensor_dev_attr(dev_attr); - - int idx = sensor_attr->index; - - switch (thermal_read_mode) { - case TPACPI_THERMAL_NONE: - return 0; - - case TPACPI_THERMAL_ACPI_TMP07: - case TPACPI_THERMAL_ACPI_UPDT: - case TPACPI_THERMAL_TPEC_8: - if (idx >= 8) - return 0; - break; - - case TPACPI_THERMAL_TPEC_12: - if (idx >= 12) - return 0; - break; - - default: - break; - - } - - return attr->mode; -} - -static const struct attribute_group thermal_attr_group = { - .is_visible = thermal_attr_is_visible, - .attrs = thermal_temp_input_attr, -}; - -#undef THERMAL_SENSOR_ATTR_TEMP -#undef THERMAL_ATTRS - -static ssize_t temp1_label_show(struct device *dev, struct device_attribute *attr, char *buf) -{ - return sysfs_emit(buf, "CPU\n"); -} -static DEVICE_ATTR_RO(temp1_label); - -static ssize_t temp2_label_show(struct device *dev, struct device_attribute *attr, char *buf) -{ - return sysfs_emit(buf, "GPU\n"); -} -static DEVICE_ATTR_RO(temp2_label); - -static struct attribute *temp_label_attributes[] = { - &dev_attr_temp1_label.attr, - &dev_attr_temp2_label.attr, - NULL -}; - -static umode_t temp_label_attr_is_visible(struct kobject *kobj, - struct attribute *attr, int n) -{ - return thermal_use_labels ? attr->mode : 0; -} - -static const struct attribute_group temp_label_attr_group = { - .is_visible = temp_label_attr_is_visible, - .attrs = temp_label_attributes, -}; - -/* --------------------------------------------------------------------- */ - -static int __init thermal_init(struct ibm_init_struct *iibm) -{ - vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n"); - - thermal_read_mode = thermal_read_mode_check(); - - vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n", - str_supported(thermal_read_mode != TPACPI_THERMAL_NONE), - thermal_read_mode); - - return thermal_read_mode != TPACPI_THERMAL_NONE ? 0 : -ENODEV; -} - -static int thermal_read(struct seq_file *m) -{ - int n, i; - struct ibm_thermal_sensors_struct t; - - n = thermal_get_sensors(&t); - if (unlikely(n < 0)) - return n; - - seq_printf(m, "temperatures:\t"); - - if (n > 0) { - for (i = 0; i < (n - 1); i++) - seq_printf(m, "%d ", t.temp[i] / 1000); - seq_printf(m, "%d\n", t.temp[i] / 1000); - } else - seq_printf(m, "not supported\n"); - - return 0; -} - -static struct ibm_struct thermal_driver_data = { - .name = "thermal", - .read = thermal_read, -}; - -/************************************************************************* - * Backlight/brightness subdriver - */ - -#define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen" - -/* - * ThinkPads can read brightness from two places: EC HBRV (0x31), or - * CMOS NVRAM byte 0x5E, bits 0-3. - * - * EC HBRV (0x31) has the following layout - * Bit 7: unknown function - * Bit 6: unknown function - * Bit 5: Z: honour scale changes, NZ: ignore scale changes - * Bit 4: must be set to zero to avoid problems - * Bit 3-0: backlight brightness level - * - * brightness_get_raw returns status data in the HBRV layout - * - * WARNING: The X61 has been verified to use HBRV for something else, so - * this should be used _only_ on IBM ThinkPads, and maybe with some careful - * testing on the very early *60 Lenovo models... - */ - -enum { - TP_EC_BACKLIGHT = 0x31, - - /* TP_EC_BACKLIGHT bitmasks */ - TP_EC_BACKLIGHT_LVLMSK = 0x1F, - TP_EC_BACKLIGHT_CMDMSK = 0xE0, - TP_EC_BACKLIGHT_MAPSW = 0x20, -}; - -enum tpacpi_brightness_access_mode { - TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */ - TPACPI_BRGHT_MODE_EC, /* EC control */ - TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */ - TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */ - TPACPI_BRGHT_MODE_MAX -}; - -static struct backlight_device *ibm_backlight_device; - -static enum tpacpi_brightness_access_mode brightness_mode = - TPACPI_BRGHT_MODE_MAX; - -static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */ - -static struct mutex brightness_mutex; - -/* NVRAM brightness access */ -static unsigned int tpacpi_brightness_nvram_get(void) -{ - u8 lnvram; - - lockdep_assert_held(&brightness_mutex); - - lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS) - & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) - >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; - lnvram &= bright_maxlvl; - - return lnvram; -} - -static void tpacpi_brightness_checkpoint_nvram(void) -{ - u8 lec = 0; - u8 b_nvram; - - if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM) - return; - - vdbg_printk(TPACPI_DBG_BRGHT, - "trying to checkpoint backlight level to NVRAM...\n"); - - if (mutex_lock_killable(&brightness_mutex) < 0) - return; - - if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) - goto unlock; - lec &= TP_EC_BACKLIGHT_LVLMSK; - b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); - - if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) - >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) { - /* NVRAM needs update */ - b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS << - TP_NVRAM_POS_LEVEL_BRIGHTNESS); - b_nvram |= lec; - nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS); - dbg_printk(TPACPI_DBG_BRGHT, - "updated NVRAM backlight level to %u (0x%02x)\n", - (unsigned int) lec, (unsigned int) b_nvram); - } else - vdbg_printk(TPACPI_DBG_BRGHT, - "NVRAM backlight level already is %u (0x%02x)\n", - (unsigned int) lec, (unsigned int) b_nvram); - -unlock: - mutex_unlock(&brightness_mutex); -} - - -static int tpacpi_brightness_get_raw(int *status) -{ - u8 lec = 0; - - lockdep_assert_held(&brightness_mutex); - - switch (brightness_mode) { - case TPACPI_BRGHT_MODE_UCMS_STEP: - *status = tpacpi_brightness_nvram_get(); - return 0; - case TPACPI_BRGHT_MODE_EC: - case TPACPI_BRGHT_MODE_ECNVRAM: - if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) - return -EIO; - *status = lec; - return 0; - default: - return -ENXIO; - } -} - -/* do NOT call with illegal backlight level value */ -static int tpacpi_brightness_set_ec(unsigned int value) -{ - u8 lec = 0; - - lockdep_assert_held(&brightness_mutex); - - if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) - return -EIO; - - if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT, - (lec & TP_EC_BACKLIGHT_CMDMSK) | - (value & TP_EC_BACKLIGHT_LVLMSK)))) - return -EIO; - - return 0; -} - -static int tpacpi_brightness_set_ucmsstep(unsigned int value) -{ - int cmos_cmd, inc; - unsigned int current_value, i; - - lockdep_assert_held(&brightness_mutex); - - current_value = tpacpi_brightness_nvram_get(); - - if (value == current_value) - return 0; - - cmos_cmd = (value > current_value) ? - TP_CMOS_BRIGHTNESS_UP : - TP_CMOS_BRIGHTNESS_DOWN; - inc = (value > current_value) ? 1 : -1; - - for (i = current_value; i != value; i += inc) - if (issue_thinkpad_cmos_command(cmos_cmd)) - return -EIO; - - return 0; -} - -/* May return EINTR which can always be mapped to ERESTARTSYS */ -static int brightness_set(unsigned int value) -{ - int res; - - if (value > bright_maxlvl) - return -EINVAL; - - vdbg_printk(TPACPI_DBG_BRGHT, - "set backlight level to %d\n", value); - - res = mutex_lock_killable(&brightness_mutex); - if (res < 0) - return res; - - switch (brightness_mode) { - case TPACPI_BRGHT_MODE_EC: - case TPACPI_BRGHT_MODE_ECNVRAM: - res = tpacpi_brightness_set_ec(value); - break; - case TPACPI_BRGHT_MODE_UCMS_STEP: - res = tpacpi_brightness_set_ucmsstep(value); - break; - default: - res = -ENXIO; - } - - mutex_unlock(&brightness_mutex); - return res; -} - -/* sysfs backlight class ----------------------------------------------- */ - -static int brightness_update_status(struct backlight_device *bd) -{ - int level = backlight_get_brightness(bd); - - dbg_printk(TPACPI_DBG_BRGHT, - "backlight: attempt to set level to %d\n", - level); - - /* it is the backlight class's job (caller) to handle - * EINTR and other errors properly */ - return brightness_set(level); -} - -static int brightness_get(struct backlight_device *bd) -{ - int status, res; - - res = mutex_lock_killable(&brightness_mutex); - if (res < 0) - return 0; - - res = tpacpi_brightness_get_raw(&status); - - mutex_unlock(&brightness_mutex); - - if (res < 0) - return 0; - - return status & TP_EC_BACKLIGHT_LVLMSK; -} - -static void tpacpi_brightness_notify_change(void) -{ - backlight_force_update(ibm_backlight_device, - BACKLIGHT_UPDATE_HOTKEY); -} - -static const struct backlight_ops ibm_backlight_data = { - .get_brightness = brightness_get, - .update_status = brightness_update_status, -}; - -/* --------------------------------------------------------------------- */ - -static int __init tpacpi_evaluate_bcl(struct acpi_device *adev, void *not_used) -{ - struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; - union acpi_object *obj; - acpi_status status; - int rc; - - status = acpi_evaluate_object(adev->handle, "_BCL", NULL, &buffer); - if (ACPI_FAILURE(status)) - return 0; - - obj = buffer.pointer; - if (!obj || obj->type != ACPI_TYPE_PACKAGE) { - acpi_handle_info(adev->handle, - "Unknown _BCL data, please report this to %s\n", - TPACPI_MAIL); - rc = 0; - } else { - rc = obj->package.count; - } - kfree(obj); - - return rc; -} - -/* - * Call _BCL method of video device. On some ThinkPads this will - * switch the firmware to the ACPI brightness control mode. - */ - -static int __init tpacpi_query_bcl_levels(acpi_handle handle) -{ - struct acpi_device *device; - - device = acpi_fetch_acpi_dev(handle); - if (!device) - return 0; - - return acpi_dev_for_each_child(device, tpacpi_evaluate_bcl, NULL); -} - - -/* - * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map - */ -static unsigned int __init tpacpi_check_std_acpi_brightness_support(void) -{ - acpi_handle video_device; - int bcl_levels = 0; - - tpacpi_acpi_handle_locate("video", NULL, &video_device); - if (video_device) - bcl_levels = tpacpi_query_bcl_levels(video_device); - - tp_features.bright_acpimode = (bcl_levels > 0); - - return (bcl_levels > 2) ? (bcl_levels - 2) : 0; -} - -/* - * These are only useful for models that have only one possibility - * of GPU. If the BIOS model handles both ATI and Intel, don't use - * these quirks. - */ -#define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */ -#define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */ -#define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */ - -static const struct tpacpi_quirk brightness_quirk_table[] __initconst = { - /* Models with ATI GPUs known to require ECNVRAM mode */ - TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */ - - /* Models with ATI GPUs that can use ECNVRAM */ - TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC), /* R50,51 T40-42 */ - TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), - TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_EC), /* R52 */ - TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), - - /* Models with Intel Extreme Graphics 2 */ - TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC), /* X40 */ - TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), - TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), - - /* Models with Intel GMA900 */ - TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */ - TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */ - TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */ -}; - -/* - * Returns < 0 for error, otherwise sets tp_features.bright_* - * and bright_maxlvl. - */ -static void __init tpacpi_detect_brightness_capabilities(void) -{ - unsigned int b; - - vdbg_printk(TPACPI_DBG_INIT, - "detecting firmware brightness interface capabilities\n"); - - /* we could run a quirks check here (same table used by - * brightness_init) if needed */ - - /* - * We always attempt to detect acpi support, so as to switch - * Lenovo Vista BIOS to ACPI brightness mode even if we are not - * going to publish a backlight interface - */ - b = tpacpi_check_std_acpi_brightness_support(); - switch (b) { - case 16: - bright_maxlvl = 15; - break; - case 8: - case 0: - bright_maxlvl = 7; - break; - default: - tp_features.bright_unkfw = 1; - bright_maxlvl = b - 1; - } - pr_debug("detected %u brightness levels\n", bright_maxlvl + 1); -} - -static int __init brightness_init(struct ibm_init_struct *iibm) -{ - struct backlight_properties props; - int b; - unsigned long quirks; - - vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n"); - - mutex_init(&brightness_mutex); - - quirks = tpacpi_check_quirks(brightness_quirk_table, - ARRAY_SIZE(brightness_quirk_table)); - - /* tpacpi_detect_brightness_capabilities() must have run already */ - - /* if it is unknown, we don't handle it: it wouldn't be safe */ - if (tp_features.bright_unkfw) - return -ENODEV; - - if (!brightness_enable) { - dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, - "brightness support disabled by module parameter\n"); - return -ENODEV; - } - - if (acpi_video_get_backlight_type() != acpi_backlight_vendor) { - if (brightness_enable > 1) { - pr_info("Standard ACPI backlight interface available, not loading native one\n"); - return -ENODEV; - } else if (brightness_enable == 1) { - pr_warn("Cannot enable backlight brightness support, ACPI is already handling it. Refer to the acpi_backlight kernel parameter.\n"); - return -ENODEV; - } - } else if (!tp_features.bright_acpimode) { - pr_notice("ACPI backlight interface not available\n"); - return -ENODEV; - } - - pr_notice("ACPI native brightness control enabled\n"); - - /* - * Check for module parameter bogosity, note that we - * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be - * able to detect "unspecified" - */ - if (brightness_mode > TPACPI_BRGHT_MODE_MAX) - return -EINVAL; - - /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */ - if (brightness_mode == TPACPI_BRGHT_MODE_AUTO || - brightness_mode == TPACPI_BRGHT_MODE_MAX) { - if (quirks & TPACPI_BRGHT_Q_EC) - brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM; - else - brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP; - - dbg_printk(TPACPI_DBG_BRGHT, - "driver auto-selected brightness_mode=%d\n", - brightness_mode); - } - - /* Safety */ - if (!tpacpi_is_ibm() && - (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM || - brightness_mode == TPACPI_BRGHT_MODE_EC)) - return -EINVAL; - - if (tpacpi_brightness_get_raw(&b) < 0) - return -ENODEV; - - memset(&props, 0, sizeof(struct backlight_properties)); - props.type = BACKLIGHT_PLATFORM; - props.max_brightness = bright_maxlvl; - props.brightness = b & TP_EC_BACKLIGHT_LVLMSK; - ibm_backlight_device = backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME, - NULL, NULL, - &ibm_backlight_data, - &props); - if (IS_ERR(ibm_backlight_device)) { - int rc = PTR_ERR(ibm_backlight_device); - ibm_backlight_device = NULL; - pr_err("Could not register backlight device\n"); - return rc; - } - vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, - "brightness is supported\n"); - - if (quirks & TPACPI_BRGHT_Q_ASK) { - pr_notice("brightness: will use unverified default: brightness_mode=%d\n", - brightness_mode); - pr_notice("brightness: please report to %s whether it works well or not on your ThinkPad\n", - TPACPI_MAIL); - } - - /* Added by mistake in early 2007. Probably useless, but it could - * be working around some unknown firmware problem where the value - * read at startup doesn't match the real hardware state... so leave - * it in place just in case */ - backlight_update_status(ibm_backlight_device); - - vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, - "brightness: registering brightness hotkeys as change notification\n"); - tpacpi_hotkey_driver_mask_set(hotkey_driver_mask - | TP_ACPI_HKEY_BRGHTUP_MASK - | TP_ACPI_HKEY_BRGHTDWN_MASK); - return 0; -} - -static void brightness_suspend(void) -{ - tpacpi_brightness_checkpoint_nvram(); -} - -static void brightness_shutdown(void) -{ - tpacpi_brightness_checkpoint_nvram(); -} - -static void brightness_exit(void) -{ - if (ibm_backlight_device) { - vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT, - "calling backlight_device_unregister()\n"); - backlight_device_unregister(ibm_backlight_device); - } - - tpacpi_brightness_checkpoint_nvram(); -} - -static int brightness_read(struct seq_file *m) -{ - int level; - - level = brightness_get(NULL); - if (level < 0) { - seq_printf(m, "level:\t\tunreadable\n"); - } else { - seq_printf(m, "level:\t\t%d\n", level); - seq_printf(m, "commands:\tup, down\n"); - seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n", - bright_maxlvl); - } - - return 0; -} - -static int brightness_write(char *buf) -{ - int level; - int rc; - char *cmd; - - level = brightness_get(NULL); - if (level < 0) - return level; - - while ((cmd = strsep(&buf, ","))) { - if (strstarts(cmd, "up")) { - if (level < bright_maxlvl) - level++; - } else if (strstarts(cmd, "down")) { - if (level > 0) - level--; - } else if (sscanf(cmd, "level %d", &level) == 1 && - level >= 0 && level <= bright_maxlvl) { - /* new level set */ - } else - return -EINVAL; - } - - tpacpi_disclose_usertask("procfs brightness", - "set level to %d\n", level); - - /* - * Now we know what the final level should be, so we try to set it. - * Doing it this way makes the syscall restartable in case of EINTR - */ - rc = brightness_set(level); - if (!rc && ibm_backlight_device) - backlight_force_update(ibm_backlight_device, - BACKLIGHT_UPDATE_SYSFS); - return (rc == -EINTR) ? -ERESTARTSYS : rc; -} - -static struct ibm_struct brightness_driver_data = { - .name = "brightness", - .read = brightness_read, - .write = brightness_write, - .exit = brightness_exit, - .suspend = brightness_suspend, - .shutdown = brightness_shutdown, -}; - -/************************************************************************* - * Volume subdriver - */ - -/* - * IBM ThinkPads have a simple volume controller with MUTE gating. - * Very early Lenovo ThinkPads follow the IBM ThinkPad spec. - * - * Since the *61 series (and probably also the later *60 series), Lenovo - * ThinkPads only implement the MUTE gate. - * - * EC register 0x30 - * Bit 6: MUTE (1 mutes sound) - * Bit 3-0: Volume - * Other bits should be zero as far as we know. - * - * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and - * bits 3-0 (volume). Other bits in NVRAM may have other functions, - * such as bit 7 which is used to detect repeated presses of MUTE, - * and we leave them unchanged. - * - * On newer Lenovo ThinkPads, the EC can automatically change the volume - * in response to user input. Unfortunately, this rarely works well. - * The laptop changes the state of its internal MUTE gate and, on some - * models, sends KEY_MUTE, causing any user code that responds to the - * mute button to get confused. The hardware MUTE gate is also - * unnecessary, since user code can handle the mute button without - * kernel or EC help. - * - * To avoid confusing userspace, we simply disable all EC-based mute - * and volume controls when possible. - */ - -#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT - -#define TPACPI_ALSA_DRVNAME "ThinkPad EC" -#define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control" -#define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME - -#if SNDRV_CARDS <= 32 -#define DEFAULT_ALSA_IDX ~((1 << (SNDRV_CARDS - 3)) - 1) -#else -#define DEFAULT_ALSA_IDX ~((1 << (32 - 3)) - 1) -#endif -static int alsa_index = DEFAULT_ALSA_IDX; /* last three slots */ -static char *alsa_id = "ThinkPadEC"; -static bool alsa_enable = SNDRV_DEFAULT_ENABLE1; - -struct tpacpi_alsa_data { - struct snd_card *card; - struct snd_ctl_elem_id *ctl_mute_id; - struct snd_ctl_elem_id *ctl_vol_id; -}; - -static struct snd_card *alsa_card; - -enum { - TP_EC_AUDIO = 0x30, - - /* TP_EC_AUDIO bits */ - TP_EC_AUDIO_MUTESW = 6, - - /* TP_EC_AUDIO bitmasks */ - TP_EC_AUDIO_LVL_MSK = 0x0F, - TP_EC_AUDIO_MUTESW_MSK = (1 << TP_EC_AUDIO_MUTESW), - - /* Maximum volume */ - TP_EC_VOLUME_MAX = 14, -}; - -enum tpacpi_volume_access_mode { - TPACPI_VOL_MODE_AUTO = 0, /* Not implemented yet */ - TPACPI_VOL_MODE_EC, /* Pure EC control */ - TPACPI_VOL_MODE_UCMS_STEP, /* UCMS step-based control: N/A */ - TPACPI_VOL_MODE_ECNVRAM, /* EC control w/ NVRAM store */ - TPACPI_VOL_MODE_MAX -}; - -enum tpacpi_volume_capabilities { - TPACPI_VOL_CAP_AUTO = 0, /* Use white/blacklist */ - TPACPI_VOL_CAP_VOLMUTE, /* Output vol and mute */ - TPACPI_VOL_CAP_MUTEONLY, /* Output mute only */ - TPACPI_VOL_CAP_MAX -}; - -enum tpacpi_mute_btn_mode { - TP_EC_MUTE_BTN_LATCH = 0, /* Mute mutes; up/down unmutes */ - /* We don't know what mode 1 is. */ - TP_EC_MUTE_BTN_NONE = 2, /* Mute and up/down are just keys */ - TP_EC_MUTE_BTN_TOGGLE = 3, /* Mute toggles; up/down unmutes */ -}; - -static enum tpacpi_volume_access_mode volume_mode = - TPACPI_VOL_MODE_MAX; - -static enum tpacpi_volume_capabilities volume_capabilities; -static bool volume_control_allowed; -static bool software_mute_requested = true; -static bool software_mute_active; -static int software_mute_orig_mode; - -/* - * Used to syncronize writers to TP_EC_AUDIO and - * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write - */ -static struct mutex volume_mutex; - -static void tpacpi_volume_checkpoint_nvram(void) -{ - u8 lec = 0; - u8 b_nvram; - u8 ec_mask; - - if (volume_mode != TPACPI_VOL_MODE_ECNVRAM) - return; - if (!volume_control_allowed) - return; - if (software_mute_active) - return; - - vdbg_printk(TPACPI_DBG_MIXER, - "trying to checkpoint mixer state to NVRAM...\n"); - - if (tp_features.mixer_no_level_control) - ec_mask = TP_EC_AUDIO_MUTESW_MSK; - else - ec_mask = TP_EC_AUDIO_MUTESW_MSK | TP_EC_AUDIO_LVL_MSK; - - if (mutex_lock_killable(&volume_mutex) < 0) - return; - - if (unlikely(!acpi_ec_read(TP_EC_AUDIO, &lec))) - goto unlock; - lec &= ec_mask; - b_nvram = nvram_read_byte(TP_NVRAM_ADDR_MIXER); - - if (lec != (b_nvram & ec_mask)) { - /* NVRAM needs update */ - b_nvram &= ~ec_mask; - b_nvram |= lec; - nvram_write_byte(b_nvram, TP_NVRAM_ADDR_MIXER); - dbg_printk(TPACPI_DBG_MIXER, - "updated NVRAM mixer status to 0x%02x (0x%02x)\n", - (unsigned int) lec, (unsigned int) b_nvram); - } else { - vdbg_printk(TPACPI_DBG_MIXER, - "NVRAM mixer status already is 0x%02x (0x%02x)\n", - (unsigned int) lec, (unsigned int) b_nvram); - } - -unlock: - mutex_unlock(&volume_mutex); -} - -static int volume_get_status_ec(u8 *status) -{ - u8 s; - - if (!acpi_ec_read(TP_EC_AUDIO, &s)) - return -EIO; - - *status = s; - - dbg_printk(TPACPI_DBG_MIXER, "status 0x%02x\n", s); - - return 0; -} - -static int volume_get_status(u8 *status) -{ - return volume_get_status_ec(status); -} - -static int volume_set_status_ec(const u8 status) -{ - if (!acpi_ec_write(TP_EC_AUDIO, status)) - return -EIO; - - dbg_printk(TPACPI_DBG_MIXER, "set EC mixer to 0x%02x\n", status); - - /* - * On X200s, and possibly on others, it can take a while for - * reads to become correct. - */ - msleep(1); - - return 0; -} - -static int volume_set_status(const u8 status) -{ - return volume_set_status_ec(status); -} - -/* returns < 0 on error, 0 on no change, 1 on change */ -static int __volume_set_mute_ec(const bool mute) -{ - int rc; - u8 s, n; - - if (mutex_lock_killable(&volume_mutex) < 0) - return -EINTR; - - rc = volume_get_status_ec(&s); - if (rc) - goto unlock; - - n = (mute) ? s | TP_EC_AUDIO_MUTESW_MSK : - s & ~TP_EC_AUDIO_MUTESW_MSK; - - if (n != s) { - rc = volume_set_status_ec(n); - if (!rc) - rc = 1; - } - -unlock: - mutex_unlock(&volume_mutex); - return rc; -} - -static int volume_alsa_set_mute(const bool mute) -{ - dbg_printk(TPACPI_DBG_MIXER, "ALSA: trying to %smute\n", - (mute) ? "" : "un"); - return __volume_set_mute_ec(mute); -} - -static int volume_set_mute(const bool mute) -{ - int rc; - - dbg_printk(TPACPI_DBG_MIXER, "trying to %smute\n", - (mute) ? "" : "un"); - - rc = __volume_set_mute_ec(mute); - return (rc < 0) ? rc : 0; -} - -/* returns < 0 on error, 0 on no change, 1 on change */ -static int __volume_set_volume_ec(const u8 vol) -{ - int rc; - u8 s, n; - - if (vol > TP_EC_VOLUME_MAX) - return -EINVAL; - - if (mutex_lock_killable(&volume_mutex) < 0) - return -EINTR; - - rc = volume_get_status_ec(&s); - if (rc) - goto unlock; - - n = (s & ~TP_EC_AUDIO_LVL_MSK) | vol; - - if (n != s) { - rc = volume_set_status_ec(n); - if (!rc) - rc = 1; - } - -unlock: - mutex_unlock(&volume_mutex); - return rc; -} - -static int volume_set_software_mute(bool startup) -{ - int result; - - if (!tpacpi_is_lenovo()) - return -ENODEV; - - if (startup) { - if (!acpi_evalf(ec_handle, &software_mute_orig_mode, - "HAUM", "qd")) - return -EIO; - - dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, - "Initial HAUM setting was %d\n", - software_mute_orig_mode); - } - - if (!acpi_evalf(ec_handle, &result, "SAUM", "qdd", - (int)TP_EC_MUTE_BTN_NONE)) - return -EIO; - - if (result != TP_EC_MUTE_BTN_NONE) - pr_warn("Unexpected SAUM result %d\n", - result); - - /* - * In software mute mode, the standard codec controls take - * precendence, so we unmute the ThinkPad HW switch at - * startup. Just on case there are SAUM-capable ThinkPads - * with level controls, set max HW volume as well. - */ - if (tp_features.mixer_no_level_control) - result = volume_set_mute(false); - else - result = volume_set_status(TP_EC_VOLUME_MAX); - - if (result != 0) - pr_warn("Failed to unmute the HW mute switch\n"); - - return 0; -} - -static void volume_exit_software_mute(void) -{ - int r; - - if (!acpi_evalf(ec_handle, &r, "SAUM", "qdd", software_mute_orig_mode) - || r != software_mute_orig_mode) - pr_warn("Failed to restore mute mode\n"); -} - -static int volume_alsa_set_volume(const u8 vol) -{ - dbg_printk(TPACPI_DBG_MIXER, - "ALSA: trying to set volume level to %hu\n", vol); - return __volume_set_volume_ec(vol); -} - -static void volume_alsa_notify_change(void) -{ - struct tpacpi_alsa_data *d; - - if (alsa_card && alsa_card->private_data) { - d = alsa_card->private_data; - if (d->ctl_mute_id) - snd_ctl_notify(alsa_card, - SNDRV_CTL_EVENT_MASK_VALUE, - d->ctl_mute_id); - if (d->ctl_vol_id) - snd_ctl_notify(alsa_card, - SNDRV_CTL_EVENT_MASK_VALUE, - d->ctl_vol_id); - } -} - -static int volume_alsa_vol_info(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_info *uinfo) -{ - uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; - uinfo->count = 1; - uinfo->value.integer.min = 0; - uinfo->value.integer.max = TP_EC_VOLUME_MAX; - return 0; -} - -static int volume_alsa_vol_get(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_value *ucontrol) -{ - u8 s; - int rc; - - rc = volume_get_status(&s); - if (rc < 0) - return rc; - - ucontrol->value.integer.value[0] = s & TP_EC_AUDIO_LVL_MSK; - return 0; -} - -static int volume_alsa_vol_put(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_value *ucontrol) -{ - tpacpi_disclose_usertask("ALSA", "set volume to %ld\n", - ucontrol->value.integer.value[0]); - return volume_alsa_set_volume(ucontrol->value.integer.value[0]); -} - -#define volume_alsa_mute_info snd_ctl_boolean_mono_info - -static int volume_alsa_mute_get(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_value *ucontrol) -{ - u8 s; - int rc; - - rc = volume_get_status(&s); - if (rc < 0) - return rc; - - ucontrol->value.integer.value[0] = - (s & TP_EC_AUDIO_MUTESW_MSK) ? 0 : 1; - return 0; -} - -static int volume_alsa_mute_put(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_value *ucontrol) -{ - tpacpi_disclose_usertask("ALSA", "%smute\n", - ucontrol->value.integer.value[0] ? - "un" : ""); - return volume_alsa_set_mute(!ucontrol->value.integer.value[0]); -} - -static struct snd_kcontrol_new volume_alsa_control_vol __initdata = { - .iface = SNDRV_CTL_ELEM_IFACE_MIXER, - .name = "Console Playback Volume", - .index = 0, - .access = SNDRV_CTL_ELEM_ACCESS_READ, - .info = volume_alsa_vol_info, - .get = volume_alsa_vol_get, -}; - -static struct snd_kcontrol_new volume_alsa_control_mute __initdata = { - .iface = SNDRV_CTL_ELEM_IFACE_MIXER, - .name = "Console Playback Switch", - .index = 0, - .access = SNDRV_CTL_ELEM_ACCESS_READ, - .info = volume_alsa_mute_info, - .get = volume_alsa_mute_get, -}; - -static void volume_suspend(void) -{ - tpacpi_volume_checkpoint_nvram(); -} - -static void volume_resume(void) -{ - if (software_mute_active) { - if (volume_set_software_mute(false) < 0) - pr_warn("Failed to restore software mute\n"); - } else { - volume_alsa_notify_change(); - } -} - -static void volume_shutdown(void) -{ - tpacpi_volume_checkpoint_nvram(); -} - -static void volume_exit(void) -{ - if (alsa_card) { - snd_card_free(alsa_card); - alsa_card = NULL; - } - - tpacpi_volume_checkpoint_nvram(); - - if (software_mute_active) - volume_exit_software_mute(); -} - -static int __init volume_create_alsa_mixer(void) -{ - struct snd_card *card; - struct tpacpi_alsa_data *data; - struct snd_kcontrol *ctl_vol; - struct snd_kcontrol *ctl_mute; - int rc; - - rc = snd_card_new(&tpacpi_pdev->dev, - alsa_index, alsa_id, THIS_MODULE, - sizeof(struct tpacpi_alsa_data), &card); - if (rc < 0 || !card) { - pr_err("Failed to create ALSA card structures: %d\n", rc); - return -ENODEV; - } - - BUG_ON(!card->private_data); - data = card->private_data; - data->card = card; - - strscpy(card->driver, TPACPI_ALSA_DRVNAME); - strscpy(card->shortname, TPACPI_ALSA_SHRTNAME); - snprintf(card->mixername, sizeof(card->mixername), "ThinkPad EC %s", - (thinkpad_id.ec_version_str) ? - thinkpad_id.ec_version_str : "(unknown)"); - snprintf(card->longname, sizeof(card->longname), - "%s at EC reg 0x%02x, fw %s", card->shortname, TP_EC_AUDIO, - (thinkpad_id.ec_version_str) ? - thinkpad_id.ec_version_str : "unknown"); - - if (volume_control_allowed) { - volume_alsa_control_vol.put = volume_alsa_vol_put; - volume_alsa_control_vol.access = - SNDRV_CTL_ELEM_ACCESS_READWRITE; - - volume_alsa_control_mute.put = volume_alsa_mute_put; - volume_alsa_control_mute.access = - SNDRV_CTL_ELEM_ACCESS_READWRITE; - } - - if (!tp_features.mixer_no_level_control) { - ctl_vol = snd_ctl_new1(&volume_alsa_control_vol, NULL); - rc = snd_ctl_add(card, ctl_vol); - if (rc < 0) { - pr_err("Failed to create ALSA volume control: %d\n", - rc); - goto err_exit; - } - data->ctl_vol_id = &ctl_vol->id; - } - - ctl_mute = snd_ctl_new1(&volume_alsa_control_mute, NULL); - rc = snd_ctl_add(card, ctl_mute); - if (rc < 0) { - pr_err("Failed to create ALSA mute control: %d\n", rc); - goto err_exit; - } - data->ctl_mute_id = &ctl_mute->id; - - rc = snd_card_register(card); - if (rc < 0) { - pr_err("Failed to register ALSA card: %d\n", rc); - goto err_exit; - } - - alsa_card = card; - return 0; - -err_exit: - snd_card_free(card); - return -ENODEV; -} - -#define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */ -#define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */ - -static const struct tpacpi_quirk volume_quirk_table[] __initconst = { - /* Whitelist volume level on all IBM by default */ - { .vendor = PCI_VENDOR_ID_IBM, - .bios = TPACPI_MATCH_ANY, - .ec = TPACPI_MATCH_ANY, - .quirks = TPACPI_VOL_Q_LEVEL }, - - /* Lenovo models with volume control (needs confirmation) */ - TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL), /* R60/i */ - TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL), /* R60e/i */ - TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL), /* T60/p */ - TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL), /* X60/s */ - TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL), /* X60t */ - TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL), /* Z60 */ - TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL), /* Z61 */ - - /* Whitelist mute-only on all Lenovo by default */ - { .vendor = PCI_VENDOR_ID_LENOVO, - .bios = TPACPI_MATCH_ANY, - .ec = TPACPI_MATCH_ANY, - .quirks = TPACPI_VOL_Q_MUTEONLY } -}; - -static int __init volume_init(struct ibm_init_struct *iibm) -{ - unsigned long quirks; - int rc; - - vdbg_printk(TPACPI_DBG_INIT, "initializing volume subdriver\n"); - - mutex_init(&volume_mutex); - - /* - * Check for module parameter bogosity, note that we - * init volume_mode to TPACPI_VOL_MODE_MAX in order to be - * able to detect "unspecified" - */ - if (volume_mode > TPACPI_VOL_MODE_MAX) - return -EINVAL; - - if (volume_mode == TPACPI_VOL_MODE_UCMS_STEP) { - pr_err("UCMS step volume mode not implemented, please contact %s\n", - TPACPI_MAIL); - return -ENODEV; - } - - if (volume_capabilities >= TPACPI_VOL_CAP_MAX) - return -EINVAL; - - /* - * The ALSA mixer is our primary interface. - * When disabled, don't install the subdriver at all - */ - if (!alsa_enable) { - vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, - "ALSA mixer disabled by parameter, not loading volume subdriver...\n"); - return -ENODEV; - } - - quirks = tpacpi_check_quirks(volume_quirk_table, - ARRAY_SIZE(volume_quirk_table)); - - switch (volume_capabilities) { - case TPACPI_VOL_CAP_AUTO: - if (quirks & TPACPI_VOL_Q_MUTEONLY) - tp_features.mixer_no_level_control = 1; - else if (quirks & TPACPI_VOL_Q_LEVEL) - tp_features.mixer_no_level_control = 0; - else - return -ENODEV; /* no mixer */ - break; - case TPACPI_VOL_CAP_VOLMUTE: - tp_features.mixer_no_level_control = 0; - break; - case TPACPI_VOL_CAP_MUTEONLY: - tp_features.mixer_no_level_control = 1; - break; - default: - return -ENODEV; - } - - if (volume_capabilities != TPACPI_VOL_CAP_AUTO) - dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, - "using user-supplied volume_capabilities=%d\n", - volume_capabilities); - - if (volume_mode == TPACPI_VOL_MODE_AUTO || - volume_mode == TPACPI_VOL_MODE_MAX) { - volume_mode = TPACPI_VOL_MODE_ECNVRAM; - - dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, - "driver auto-selected volume_mode=%d\n", - volume_mode); - } else { - dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, - "using user-supplied volume_mode=%d\n", - volume_mode); - } - - vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, - "mute is supported, volume control is %s\n", - str_supported(!tp_features.mixer_no_level_control)); - - if (software_mute_requested && volume_set_software_mute(true) == 0) { - software_mute_active = true; - } else { - rc = volume_create_alsa_mixer(); - if (rc) { - pr_err("Could not create the ALSA mixer interface\n"); - return rc; - } - - pr_info("Console audio control enabled, mode: %s\n", - (volume_control_allowed) ? - "override (read/write)" : - "monitor (read only)"); - } - - vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, - "registering volume hotkeys as change notification\n"); - tpacpi_hotkey_driver_mask_set(hotkey_driver_mask - | TP_ACPI_HKEY_VOLUP_MASK - | TP_ACPI_HKEY_VOLDWN_MASK - | TP_ACPI_HKEY_MUTE_MASK); - - return 0; -} - -static int volume_read(struct seq_file *m) -{ - u8 status; - - if (volume_get_status(&status) < 0) { - seq_printf(m, "level:\t\tunreadable\n"); - } else { - if (tp_features.mixer_no_level_control) - seq_printf(m, "level:\t\tunsupported\n"); - else - seq_printf(m, "level:\t\t%d\n", - status & TP_EC_AUDIO_LVL_MSK); - - seq_printf(m, "mute:\t\t%s\n", str_on_off(status & BIT(TP_EC_AUDIO_MUTESW))); - - if (volume_control_allowed) { - seq_printf(m, "commands:\tunmute, mute\n"); - if (!tp_features.mixer_no_level_control) { - seq_printf(m, "commands:\tup, down\n"); - seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n", - TP_EC_VOLUME_MAX); - } - } - } - - return 0; -} - -static int volume_write(char *buf) -{ - u8 s; - u8 new_level, new_mute; - int l; - char *cmd; - int rc; - - /* - * We do allow volume control at driver startup, so that the - * user can set initial state through the volume=... parameter hack. - */ - if (!volume_control_allowed && tpacpi_lifecycle != TPACPI_LIFE_INIT) { - if (unlikely(!tp_warned.volume_ctrl_forbidden)) { - tp_warned.volume_ctrl_forbidden = 1; - pr_notice("Console audio control in monitor mode, changes are not allowed\n"); - pr_notice("Use the volume_control=1 module parameter to enable volume control\n"); - } - return -EPERM; - } - - rc = volume_get_status(&s); - if (rc < 0) - return rc; - - new_level = s & TP_EC_AUDIO_LVL_MSK; - new_mute = s & TP_EC_AUDIO_MUTESW_MSK; - - while ((cmd = strsep(&buf, ","))) { - if (!tp_features.mixer_no_level_control) { - if (strstarts(cmd, "up")) { - if (new_mute) - new_mute = 0; - else if (new_level < TP_EC_VOLUME_MAX) - new_level++; - continue; - } else if (strstarts(cmd, "down")) { - if (new_mute) - new_mute = 0; - else if (new_level > 0) - new_level--; - continue; - } else if (sscanf(cmd, "level %u", &l) == 1 && - l >= 0 && l <= TP_EC_VOLUME_MAX) { - new_level = l; - continue; - } - } - if (strstarts(cmd, "mute")) - new_mute = TP_EC_AUDIO_MUTESW_MSK; - else if (strstarts(cmd, "unmute")) - new_mute = 0; - else - return -EINVAL; - } - - if (tp_features.mixer_no_level_control) { - tpacpi_disclose_usertask("procfs volume", "%smute\n", - new_mute ? "" : "un"); - rc = volume_set_mute(!!new_mute); - } else { - tpacpi_disclose_usertask("procfs volume", - "%smute and set level to %d\n", - new_mute ? "" : "un", new_level); - rc = volume_set_status(new_mute | new_level); - } - volume_alsa_notify_change(); - - return (rc == -EINTR) ? -ERESTARTSYS : rc; -} - -static struct ibm_struct volume_driver_data = { - .name = "volume", - .read = volume_read, - .write = volume_write, - .exit = volume_exit, - .suspend = volume_suspend, - .resume = volume_resume, - .shutdown = volume_shutdown, -}; - -#else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ - -#define alsa_card NULL - -static inline void volume_alsa_notify_change(void) -{ -} - -static int __init volume_init(struct ibm_init_struct *iibm) -{ - pr_info("volume: disabled as there is no ALSA support in this kernel\n"); - - return -ENODEV; -} - -static struct ibm_struct volume_driver_data = { - .name = "volume", -}; - -#endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ - -/************************************************************************* - * Fan subdriver - */ - -/* - * FAN ACCESS MODES - * - * TPACPI_FAN_RD_ACPI_GFAN: - * ACPI GFAN method: returns fan level - * - * see TPACPI_FAN_WR_ACPI_SFAN - * EC 0x2f (HFSP) not available if GFAN exists - * - * TPACPI_FAN_WR_ACPI_SFAN: - * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max) - * - * EC 0x2f (HFSP) might be available *for reading*, but do not use - * it for writing. - * - * TPACPI_FAN_RD_ACPI_FANG: - * ACPI FANG method: returns fan control register - * - * Takes one parameter which is 0x8100 plus the offset to EC memory - * address 0xf500 and returns the byte at this address. - * - * 0xf500: - * When the value is less than 9 automatic mode is enabled - * 0xf502: - * Contains the current fan speed from 0-100% - * 0xf506: - * Bit 7 has to be set in order to enable manual control by - * writing a value >= 9 to 0xf500 - * - * TPACPI_FAN_WR_ACPI_FANW: - * ACPI FANW method: sets fan control registers - * - * Takes 0x8100 plus the offset to EC memory address 0xf500 and the - * value to be written there as parameters. - * - * see TPACPI_FAN_RD_ACPI_FANG - * - * TPACPI_FAN_WR_TPEC: - * ThinkPad EC register 0x2f (HFSP): fan control loop mode - * Supported on almost all ThinkPads - * - * Fan speed changes of any sort (including those caused by the - * disengaged mode) are usually done slowly by the firmware as the - * maximum amount of fan duty cycle change per second seems to be - * limited. - * - * Reading is not available if GFAN exists. - * Writing is not available if SFAN exists. - * - * Bits - * 7 automatic mode engaged; - * (default operation mode of the ThinkPad) - * fan level is ignored in this mode. - * 6 full speed mode (takes precedence over bit 7); - * not available on all thinkpads. May disable - * the tachometer while the fan controller ramps up - * the speed (which can take up to a few *minutes*). - * Speeds up fan to 100% duty-cycle, which is far above - * the standard RPM levels. It is not impossible that - * it could cause hardware damage. - * 5-3 unused in some models. Extra bits for fan level - * in others, but still useless as all values above - * 7 map to the same speed as level 7 in these models. - * 2-0 fan level (0..7 usually) - * 0x00 = stop - * 0x07 = max (set when temperatures critical) - * Some ThinkPads may have other levels, see - * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41) - * - * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at - * boot. Apparently the EC does not initialize it, so unless ACPI DSDT - * does so, its initial value is meaningless (0x07). - * - * For firmware bugs, refer to: - * https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues - * - * ---- - * - * ThinkPad EC register 0x84 (LSB), 0x85 (MSB): - * Main fan tachometer reading (in RPM) - * - * This register is present on all ThinkPads with a new-style EC, and - * it is known not to be present on the A21m/e, and T22, as there is - * something else in offset 0x84 according to the ACPI DSDT. Other - * ThinkPads from this same time period (and earlier) probably lack the - * tachometer as well. - * - * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware - * was never fixed by IBM to report the EC firmware version string - * probably support the tachometer (like the early X models), so - * detecting it is quite hard. We need more data to know for sure. - * - * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings - * might result. - * - * FIRMWARE BUG: may go stale while the EC is switching to full speed - * mode. - * - * For firmware bugs, refer to: - * https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues - * - * ---- - * - * ThinkPad EC register 0x31 bit 0 (only on select models) - * - * When bit 0 of EC register 0x31 is zero, the tachometer registers - * show the speed of the main fan. When bit 0 of EC register 0x31 - * is one, the tachometer registers show the speed of the auxiliary - * fan. - * - * Fan control seems to affect both fans, regardless of the state - * of this bit. - * - * So far, only the firmware for the X60/X61 non-tablet versions - * seem to support this (firmware TP-7M). - * - * TPACPI_FAN_WR_ACPI_FANS: - * ThinkPad X31, X40, X41. Not available in the X60. - * - * FANS ACPI handle: takes three arguments: low speed, medium speed, - * high speed. ACPI DSDT seems to map these three speeds to levels - * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH - * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3") - * - * The speeds are stored on handles - * (FANA:FAN9), (FANC:FANB), (FANE:FAND). - * - * There are three default speed sets, accessible as handles: - * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H - * - * ACPI DSDT switches which set is in use depending on various - * factors. - * - * TPACPI_FAN_WR_TPEC is also available and should be used to - * command the fan. The X31/X40/X41 seems to have 8 fan levels, - * but the ACPI tables just mention level 7. - * - * TPACPI_FAN_RD_TPEC_NS: - * This mode is used for a few ThinkPads (L13 Yoga Gen2, X13 Yoga Gen2 etc.) - * that are using non-standard EC locations for reporting fan speeds. - * Currently these platforms only provide fan rpm reporting. - * - */ - -#define FAN_RPM_CAL_CONST 491520 /* FAN RPM calculation offset for some non-standard ECFW */ - -#define FAN_NS_CTRL_STATUS BIT(2) /* Bit which determines control is enabled or not */ -#define FAN_NS_CTRL BIT(4) /* Bit which determines control is by host or EC */ -#define FAN_CLOCK_TPM (22500*60) /* Ticks per minute for a 22.5 kHz clock */ - -enum { /* Fan control constants */ - fan_status_offset = 0x2f, /* EC register 0x2f */ - fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM) - * 0x84 must be read before 0x85 */ - fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M) - bit 0 selects which fan is active */ - - fan_status_offset_ns = 0x93, /* Special status/control offset for non-standard EC Fan1 */ - fan2_status_offset_ns = 0x96, /* Special status/control offset for non-standard EC Fan2 */ - fan_rpm_status_ns = 0x95, /* Special offset for Fan1 RPM status for non-standard EC */ - fan2_rpm_status_ns = 0x98, /* Special offset for Fan2 RPM status for non-standard EC */ - - TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */ - TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */ - - TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */ -}; - -enum fan_status_access_mode { - TPACPI_FAN_NONE = 0, /* No fan status or control */ - TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */ - TPACPI_FAN_RD_ACPI_FANG, /* Use ACPI FANG */ - TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */ - TPACPI_FAN_RD_TPEC_NS, /* Use non-standard ACPI EC regs (eg: L13 Yoga gen2 etc.) */ -}; - -enum fan_control_access_mode { - TPACPI_FAN_WR_NONE = 0, /* No fan control */ - TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */ - TPACPI_FAN_WR_ACPI_FANW, /* Use ACPI FANW */ - TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */ - TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */ -}; - -enum fan_control_commands { - TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */ - TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */ - TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd, - * and also watchdog cmd */ -}; - -static bool fan_control_allowed; - -static enum fan_status_access_mode fan_status_access_mode; -static enum fan_control_access_mode fan_control_access_mode; -static enum fan_control_commands fan_control_commands; - -static u8 fan_control_initial_status; -static u8 fan_control_desired_level; -static u8 fan_control_resume_level; -static int fan_watchdog_maxinterval; - -static bool fan_with_ns_addr; -static bool ecfw_with_fan_dec_rpm; -static bool fan_speed_in_tpr; - -static struct mutex fan_mutex; - -static void fan_watchdog_fire(struct work_struct *ignored); -static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire); - -TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */ -TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */ - "\\FSPD", /* 600e/x, 770e, 770x */ - ); /* all others */ -TPACPI_HANDLE(fang, ec, "FANG", /* E531 */ - ); /* all others */ -TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */ - "JFNS", /* 770x-JL */ - ); /* all others */ -TPACPI_HANDLE(fanw, ec, "FANW", /* E531 */ - ); /* all others */ - -/* - * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the - * HFSP register at boot, so it contains 0x07 but the Thinkpad could - * be in auto mode (0x80). - * - * This is corrected by any write to HFSP either by the driver, or - * by the firmware. - * - * We assume 0x07 really means auto mode while this quirk is active, - * as this is far more likely than the ThinkPad being in level 7, - * which is only used by the firmware during thermal emergencies. - * - * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52), - * TP-70 (T43, R52), which are known to be buggy. - */ - -static void fan_quirk1_setup(void) -{ - if (fan_control_initial_status == 0x07) { - pr_notice("fan_init: initial fan status is unknown, assuming it is in auto mode\n"); - tp_features.fan_ctrl_status_undef = 1; - } -} - -static void fan_quirk1_handle(u8 *fan_status) -{ - if (unlikely(tp_features.fan_ctrl_status_undef)) { - if (*fan_status != fan_control_initial_status) { - /* something changed the HFSP regisnter since - * driver init time, so it is not undefined - * anymore */ - tp_features.fan_ctrl_status_undef = 0; - } else { - /* Return most likely status. In fact, it - * might be the only possible status */ - *fan_status = TP_EC_FAN_AUTO; - } - } -} - -/* Select main fan on X60/X61, NOOP on others */ -static bool fan_select_fan1(void) -{ - if (tp_features.second_fan) { - u8 val; - - if (ec_read(fan_select_offset, &val) < 0) - return false; - val &= 0xFEU; - if (ec_write(fan_select_offset, val) < 0) - return false; - } - return true; -} - -/* Select secondary fan on X60/X61 */ -static bool fan_select_fan2(void) -{ - u8 val; - - if (!tp_features.second_fan) - return false; - - if (ec_read(fan_select_offset, &val) < 0) - return false; - val |= 0x01U; - if (ec_write(fan_select_offset, val) < 0) - return false; - - return true; -} - -static void fan_update_desired_level(u8 status) -{ - lockdep_assert_held(&fan_mutex); - - if ((status & - (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { - if (status > 7) - fan_control_desired_level = 7; - else - fan_control_desired_level = status; - } -} - -static int fan_get_status(u8 *status) -{ - u8 s; - - /* TODO: - * Add TPACPI_FAN_RD_ACPI_FANS ? */ - - switch (fan_status_access_mode) { - case TPACPI_FAN_RD_ACPI_GFAN: { - /* 570, 600e/x, 770e, 770x */ - int res; - - if (unlikely(!acpi_evalf(gfan_handle, &res, NULL, "d"))) - return -EIO; - - if (likely(status)) - *status = res & 0x07; - - break; - } - case TPACPI_FAN_RD_ACPI_FANG: { - /* E531 */ - int mode, speed; - - if (unlikely(!acpi_evalf(fang_handle, &mode, NULL, "dd", 0x8100))) - return -EIO; - if (unlikely(!acpi_evalf(fang_handle, &speed, NULL, "dd", 0x8102))) - return -EIO; - - if (likely(status)) { - *status = speed * 7 / 100; - if (mode < 9) - *status |= TP_EC_FAN_AUTO; - } - - break; - } - case TPACPI_FAN_RD_TPEC: - /* all except 570, 600e/x, 770e, 770x */ - if (unlikely(!acpi_ec_read(fan_status_offset, &s))) - return -EIO; - - if (likely(status)) { - *status = s; - fan_quirk1_handle(status); - } - - break; - case TPACPI_FAN_RD_TPEC_NS: - /* Default mode is AUTO which means controlled by EC */ - if (!acpi_ec_read(fan_status_offset_ns, &s)) - return -EIO; - - if (status) - *status = s; - - break; - - default: - return -ENXIO; - } - - return 0; -} - -static int fan_get_status_safe(u8 *status) -{ - int rc; - u8 s; - - if (mutex_lock_killable(&fan_mutex)) - return -ERESTARTSYS; - rc = fan_get_status(&s); - /* NS EC doesn't have register with level settings */ - if (!rc && !fan_with_ns_addr) - fan_update_desired_level(s); - mutex_unlock(&fan_mutex); - - if (rc) - return rc; - if (status) - *status = s; - - return 0; -} - -static int fan_get_speed(unsigned int *speed) -{ - u8 hi, lo; - - switch (fan_status_access_mode) { - case TPACPI_FAN_RD_TPEC: - /* all except 570, 600e/x, 770e, 770x */ - if (unlikely(!fan_select_fan1())) - return -EIO; - if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) || - !acpi_ec_read(fan_rpm_offset + 1, &hi))) - return -EIO; - - if (likely(speed)) { - *speed = (hi << 8) | lo; - if (fan_speed_in_tpr && *speed != 0) - *speed = FAN_CLOCK_TPM / *speed; - } - break; - case TPACPI_FAN_RD_TPEC_NS: - if (!acpi_ec_read(fan_rpm_status_ns, &lo)) - return -EIO; - - if (speed) - *speed = lo ? FAN_RPM_CAL_CONST / lo : 0; - break; - - default: - return -ENXIO; - } - - return 0; -} - -static int fan2_get_speed(unsigned int *speed) -{ - u8 hi, lo, status; - bool rc; - - switch (fan_status_access_mode) { - case TPACPI_FAN_RD_TPEC: - /* all except 570, 600e/x, 770e, 770x */ - if (unlikely(!fan_select_fan2())) - return -EIO; - rc = !acpi_ec_read(fan_rpm_offset, &lo) || - !acpi_ec_read(fan_rpm_offset + 1, &hi); - fan_select_fan1(); /* play it safe */ - if (rc) - return -EIO; - - if (likely(speed)) { - *speed = (hi << 8) | lo; - if (fan_speed_in_tpr && *speed != 0) - *speed = FAN_CLOCK_TPM / *speed; - } - break; - - case TPACPI_FAN_RD_TPEC_NS: - rc = !acpi_ec_read(fan2_status_offset_ns, &status); - if (rc) - return -EIO; - if (!(status & FAN_NS_CTRL_STATUS)) { - pr_info("secondary fan control not supported\n"); - return -EIO; - } - rc = !acpi_ec_read(fan2_rpm_status_ns, &lo); - if (rc) - return -EIO; - if (speed) - *speed = lo ? FAN_RPM_CAL_CONST / lo : 0; - break; - case TPACPI_FAN_RD_ACPI_FANG: { - /* E531 */ - int speed_tmp; - - if (unlikely(!acpi_evalf(fang_handle, &speed_tmp, NULL, "dd", 0x8102))) - return -EIO; - - if (likely(speed)) - *speed = speed_tmp * 65535 / 100; - break; - } - - default: - return -ENXIO; - } - - return 0; -} - -static int fan_set_level(int level) -{ - if (!fan_control_allowed) - return -EPERM; - - switch (fan_control_access_mode) { - case TPACPI_FAN_WR_ACPI_SFAN: - if ((level < 0) || (level > 7)) - return -EINVAL; - - if (tp_features.second_fan_ctl) { - if (!fan_select_fan2() || - !acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) { - pr_warn("Couldn't set 2nd fan level, disabling support\n"); - tp_features.second_fan_ctl = 0; - } - fan_select_fan1(); - } - if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) - return -EIO; - break; - - case TPACPI_FAN_WR_ACPI_FANS: - case TPACPI_FAN_WR_TPEC: - if (!(level & TP_EC_FAN_AUTO) && - !(level & TP_EC_FAN_FULLSPEED) && - ((level < 0) || (level > 7))) - return -EINVAL; - - /* safety net should the EC not support AUTO - * or FULLSPEED mode bits and just ignore them */ - if (level & TP_EC_FAN_FULLSPEED) - level |= 7; /* safety min speed 7 */ - else if (level & TP_EC_FAN_AUTO) - level |= 4; /* safety min speed 4 */ - - if (tp_features.second_fan_ctl) { - if (!fan_select_fan2() || - !acpi_ec_write(fan_status_offset, level)) { - pr_warn("Couldn't set 2nd fan level, disabling support\n"); - tp_features.second_fan_ctl = 0; - } - fan_select_fan1(); - - } - if (!acpi_ec_write(fan_status_offset, level)) - return -EIO; - else - tp_features.fan_ctrl_status_undef = 0; - break; - - case TPACPI_FAN_WR_ACPI_FANW: - if (!(level & TP_EC_FAN_AUTO) && (level < 0 || level > 7)) - return -EINVAL; - if (level & TP_EC_FAN_FULLSPEED) - return -EINVAL; - - if (level & TP_EC_FAN_AUTO) { - if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8106, 0x05)) { - return -EIO; - } - if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8100, 0x00)) { - return -EIO; - } - } else { - if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8106, 0x45)) { - return -EIO; - } - if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8100, 0xff)) { - return -EIO; - } - if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8102, level * 100 / 7)) { - return -EIO; - } - } - break; - - default: - return -ENXIO; - } - - vdbg_printk(TPACPI_DBG_FAN, - "fan control: set fan control register to 0x%02x\n", level); - return 0; -} - -static int fan_set_level_safe(int level) -{ - int rc; - - if (!fan_control_allowed) - return -EPERM; - - if (mutex_lock_killable(&fan_mutex)) - return -ERESTARTSYS; - - if (level == TPACPI_FAN_LAST_LEVEL) - level = fan_control_desired_level; - - rc = fan_set_level(level); - if (!rc) - fan_update_desired_level(level); - - mutex_unlock(&fan_mutex); - return rc; -} - -static int fan_set_enable(void) -{ - u8 s = 0; - int rc; - - if (!fan_control_allowed) - return -EPERM; - - if (mutex_lock_killable(&fan_mutex)) - return -ERESTARTSYS; - - switch (fan_control_access_mode) { - case TPACPI_FAN_WR_ACPI_FANS: - case TPACPI_FAN_WR_TPEC: - rc = fan_get_status(&s); - if (rc) - break; - - /* Don't go out of emergency fan mode */ - if (s != 7) { - s &= 0x07; - s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */ - } - - if (!acpi_ec_write(fan_status_offset, s)) - rc = -EIO; - else { - tp_features.fan_ctrl_status_undef = 0; - rc = 0; - } - break; - - case TPACPI_FAN_WR_ACPI_SFAN: - rc = fan_get_status(&s); - if (rc) - break; - - s &= 0x07; - - /* Set fan to at least level 4 */ - s |= 4; - - if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s)) - rc = -EIO; - else - rc = 0; - break; - - case TPACPI_FAN_WR_ACPI_FANW: - if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8106, 0x05)) { - rc = -EIO; - break; - } - if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8100, 0x00)) { - rc = -EIO; - break; - } - - rc = 0; - break; - - default: - rc = -ENXIO; - } - - mutex_unlock(&fan_mutex); - - if (!rc) - vdbg_printk(TPACPI_DBG_FAN, - "fan control: set fan control register to 0x%02x\n", - s); - return rc; -} - -static int fan_set_disable(void) -{ - int rc; - - if (!fan_control_allowed) - return -EPERM; - - if (mutex_lock_killable(&fan_mutex)) - return -ERESTARTSYS; - - rc = 0; - switch (fan_control_access_mode) { - case TPACPI_FAN_WR_ACPI_FANS: - case TPACPI_FAN_WR_TPEC: - if (!acpi_ec_write(fan_status_offset, 0x00)) - rc = -EIO; - else { - fan_control_desired_level = 0; - tp_features.fan_ctrl_status_undef = 0; - } - break; - - case TPACPI_FAN_WR_ACPI_SFAN: - if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00)) - rc = -EIO; - else - fan_control_desired_level = 0; - break; - - case TPACPI_FAN_WR_ACPI_FANW: - if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8106, 0x45)) { - rc = -EIO; - break; - } - if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8100, 0xff)) { - rc = -EIO; - break; - } - if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8102, 0x00)) { - rc = -EIO; - break; - } - rc = 0; - break; - - default: - rc = -ENXIO; - } - - if (!rc) - vdbg_printk(TPACPI_DBG_FAN, - "fan control: set fan control register to 0\n"); - - mutex_unlock(&fan_mutex); - return rc; -} - -static int fan_set_speed(int speed) -{ - int rc; - - if (!fan_control_allowed) - return -EPERM; - - if (mutex_lock_killable(&fan_mutex)) - return -ERESTARTSYS; - - rc = 0; - switch (fan_control_access_mode) { - case TPACPI_FAN_WR_ACPI_FANS: - if (speed >= 0 && speed <= 65535) { - if (!acpi_evalf(fans_handle, NULL, NULL, "vddd", - speed, speed, speed)) - rc = -EIO; - } else - rc = -EINVAL; - break; - - case TPACPI_FAN_WR_ACPI_FANW: - if (speed >= 0 && speed <= 65535) { - if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8106, 0x45)) { - rc = -EIO; - break; - } - if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8100, 0xff)) { - rc = -EIO; - break; - } - if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", - 0x8102, speed * 100 / 65535)) - rc = -EIO; - } else - rc = -EINVAL; - break; - - default: - rc = -ENXIO; - } - - mutex_unlock(&fan_mutex); - return rc; -} - -static void fan_watchdog_reset(void) -{ - if (fan_control_access_mode == TPACPI_FAN_WR_NONE) - return; - - if (fan_watchdog_maxinterval > 0 && - tpacpi_lifecycle != TPACPI_LIFE_EXITING) - mod_delayed_work(tpacpi_wq, &fan_watchdog_task, - secs_to_jiffies(fan_watchdog_maxinterval)); - else - cancel_delayed_work(&fan_watchdog_task); -} - -static void fan_watchdog_fire(struct work_struct *ignored) -{ - int rc; - - if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) - return; - - pr_notice("fan watchdog: enabling fan\n"); - rc = fan_set_enable(); - if (rc < 0) { - pr_err("fan watchdog: error %d while enabling fan, will try again later...\n", - rc); - /* reschedule for later */ - fan_watchdog_reset(); - } -} - -/* - * SYSFS fan layout: hwmon compatible (device) - * - * pwm*_enable: - * 0: "disengaged" mode - * 1: manual mode - * 2: native EC "auto" mode (recommended, hardware default) - * - * pwm*: set speed in manual mode, ignored otherwise. - * 0 is level 0; 255 is level 7. Intermediate points done with linear - * interpolation. - * - * fan*_input: tachometer reading, RPM - * - * - * SYSFS fan layout: extensions - * - * fan_watchdog (driver): - * fan watchdog interval in seconds, 0 disables (default), max 120 - */ - -/* sysfs fan pwm1_enable ----------------------------------------------- */ -static ssize_t fan_pwm1_enable_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - int res, mode; - u8 status; - - res = fan_get_status_safe(&status); - if (res) - return res; - - if (status & TP_EC_FAN_FULLSPEED) { - mode = 0; - } else if (status & TP_EC_FAN_AUTO) { - mode = 2; - } else - mode = 1; - - return sysfs_emit(buf, "%d\n", mode); -} - -static ssize_t fan_pwm1_enable_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - unsigned long t; - int res, level; - - if (parse_strtoul(buf, 2, &t)) - return -EINVAL; - - tpacpi_disclose_usertask("hwmon pwm1_enable", - "set fan mode to %lu\n", t); - - switch (t) { - case 0: - level = TP_EC_FAN_FULLSPEED; - break; - case 1: - level = TPACPI_FAN_LAST_LEVEL; - break; - case 2: - level = TP_EC_FAN_AUTO; - break; - case 3: - /* reserved for software-controlled auto mode */ - return -ENOSYS; - default: - return -EINVAL; - } - - res = fan_set_level_safe(level); - if (res == -ENXIO) - return -EINVAL; - else if (res < 0) - return res; - - fan_watchdog_reset(); - - return count; -} - -static DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, - fan_pwm1_enable_show, fan_pwm1_enable_store); - -/* sysfs fan pwm1 ------------------------------------------------------ */ -static ssize_t fan_pwm1_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - int res; - u8 status; - - res = fan_get_status_safe(&status); - if (res) - return res; - - if ((status & - (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0) - status = fan_control_desired_level; - - if (status > 7) - status = 7; - - return sysfs_emit(buf, "%u\n", (status * 255) / 7); -} - -static ssize_t fan_pwm1_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - unsigned long s; - int rc; - u8 status, newlevel; - - if (parse_strtoul(buf, 255, &s)) - return -EINVAL; - - tpacpi_disclose_usertask("hwmon pwm1", - "set fan speed to %lu\n", s); - - /* scale down from 0-255 to 0-7 */ - newlevel = (s >> 5) & 0x07; - - if (mutex_lock_killable(&fan_mutex)) - return -ERESTARTSYS; - - rc = fan_get_status(&status); - if (!rc && (status & - (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { - rc = fan_set_level(newlevel); - if (rc == -ENXIO) - rc = -EINVAL; - else if (!rc) { - fan_update_desired_level(newlevel); - fan_watchdog_reset(); - } - } - - mutex_unlock(&fan_mutex); - return (rc) ? rc : count; -} - -static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, fan_pwm1_show, fan_pwm1_store); - -/* sysfs fan fan1_input ------------------------------------------------ */ -static ssize_t fan_fan1_input_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - int res; - unsigned int speed; - - res = fan_get_speed(&speed); - if (res < 0) - return res; - - /* Check for fan speeds displayed in hexadecimal */ - if (!ecfw_with_fan_dec_rpm) - return sysfs_emit(buf, "%u\n", speed); - else - return sysfs_emit(buf, "%x\n", speed); -} - -static DEVICE_ATTR(fan1_input, S_IRUGO, fan_fan1_input_show, NULL); - -/* sysfs fan fan2_input ------------------------------------------------ */ -static ssize_t fan_fan2_input_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - int res; - unsigned int speed; - - res = fan2_get_speed(&speed); - if (res < 0) - return res; - - /* Check for fan speeds displayed in hexadecimal */ - if (!ecfw_with_fan_dec_rpm) - return sysfs_emit(buf, "%u\n", speed); - else - return sysfs_emit(buf, "%x\n", speed); -} - -static DEVICE_ATTR(fan2_input, S_IRUGO, fan_fan2_input_show, NULL); - -/* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */ -static ssize_t fan_watchdog_show(struct device_driver *drv, char *buf) -{ - return sysfs_emit(buf, "%u\n", fan_watchdog_maxinterval); -} - -static ssize_t fan_watchdog_store(struct device_driver *drv, const char *buf, - size_t count) -{ - unsigned long t; - - if (parse_strtoul(buf, 120, &t)) - return -EINVAL; - - if (!fan_control_allowed) - return -EPERM; - - fan_watchdog_maxinterval = t; - fan_watchdog_reset(); - - tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t); - - return count; -} -static DRIVER_ATTR_RW(fan_watchdog); - -/* --------------------------------------------------------------------- */ - -static struct attribute *fan_attributes[] = { - &dev_attr_pwm1_enable.attr, - &dev_attr_pwm1.attr, - &dev_attr_fan1_input.attr, - &dev_attr_fan2_input.attr, - NULL -}; - -static umode_t fan_attr_is_visible(struct kobject *kobj, struct attribute *attr, - int n) -{ - if (fan_status_access_mode == TPACPI_FAN_NONE && - fan_control_access_mode == TPACPI_FAN_WR_NONE) - return 0; - - if (attr == &dev_attr_fan2_input.attr) { - if (!tp_features.second_fan) - return 0; - } - - return attr->mode; -} - -static const struct attribute_group fan_attr_group = { - .is_visible = fan_attr_is_visible, - .attrs = fan_attributes, -}; - -static struct attribute *fan_driver_attributes[] = { - &driver_attr_fan_watchdog.attr, - NULL -}; - -static const struct attribute_group fan_driver_attr_group = { - .is_visible = fan_attr_is_visible, - .attrs = fan_driver_attributes, -}; - -#define TPACPI_FAN_Q1 0x0001 /* Uninitialized HFSP */ -#define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */ -#define TPACPI_FAN_2CTL 0x0004 /* selects fan2 control */ -#define TPACPI_FAN_NOFAN 0x0008 /* no fan available */ -#define TPACPI_FAN_NS 0x0010 /* For EC with non-Standard register addresses */ -#define TPACPI_FAN_DECRPM 0x0020 /* For ECFW's with RPM in register as decimal */ -#define TPACPI_FAN_TPR 0x0040 /* Fan speed is in Ticks Per Revolution */ -#define TPACPI_FAN_NOACPI 0x0080 /* Don't use ACPI methods even if detected */ - -static const struct tpacpi_quirk fan_quirk_table[] __initconst = { - TPACPI_QEC_IBM('1', 'Y', TPACPI_FAN_Q1), - TPACPI_QEC_IBM('7', '8', TPACPI_FAN_Q1), - TPACPI_QEC_IBM('7', '6', TPACPI_FAN_Q1), - TPACPI_QEC_IBM('7', '0', TPACPI_FAN_Q1), - TPACPI_QEC_LNV('7', 'M', TPACPI_FAN_2FAN), - TPACPI_Q_LNV('N', '1', TPACPI_FAN_2FAN), - TPACPI_Q_LNV3('N', '1', 'D', TPACPI_FAN_2CTL), /* P70 */ - TPACPI_Q_LNV3('N', '1', 'E', TPACPI_FAN_2CTL), /* P50 */ - TPACPI_Q_LNV3('N', '1', 'T', TPACPI_FAN_2CTL), /* P71 */ - TPACPI_Q_LNV3('N', '1', 'U', TPACPI_FAN_2CTL), /* P51 */ - TPACPI_Q_LNV3('N', '2', 'C', TPACPI_FAN_2CTL), /* P52 / P72 */ - TPACPI_Q_LNV3('N', '2', 'N', TPACPI_FAN_2CTL), /* P53 / P73 */ - TPACPI_Q_LNV3('N', '2', 'E', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (1st gen) */ - TPACPI_Q_LNV3('N', '2', 'O', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (2nd gen) */ - TPACPI_Q_LNV3('N', '3', '0', TPACPI_FAN_2CTL), /* P15 (1st gen) / P15v (1st gen) */ - TPACPI_Q_LNV3('N', '3', '7', TPACPI_FAN_2CTL), /* T15g (2nd gen) */ - TPACPI_Q_LNV3('R', '1', 'F', TPACPI_FAN_NS), /* L13 Yoga Gen 2 */ - TPACPI_Q_LNV3('N', '2', 'U', TPACPI_FAN_NS), /* X13 Yoga Gen 2*/ - TPACPI_Q_LNV3('R', '0', 'R', TPACPI_FAN_NS), /* L380 */ - TPACPI_Q_LNV3('R', '1', '5', TPACPI_FAN_NS), /* L13 Yoga Gen 1 */ - TPACPI_Q_LNV3('R', '1', '0', TPACPI_FAN_NS), /* L390 */ - TPACPI_Q_LNV3('N', '2', 'L', TPACPI_FAN_NS), /* X13 Yoga Gen 1 */ - TPACPI_Q_LNV3('R', '0', 'T', TPACPI_FAN_NS), /* 11e Gen5 GL */ - TPACPI_Q_LNV3('R', '1', 'D', TPACPI_FAN_NS), /* 11e Gen5 GL-R */ - TPACPI_Q_LNV3('R', '0', 'V', TPACPI_FAN_NS), /* 11e Gen5 KL-Y */ - TPACPI_Q_LNV3('N', '1', 'O', TPACPI_FAN_NOFAN), /* X1 Tablet (2nd gen) */ - TPACPI_Q_LNV3('R', '0', 'Q', TPACPI_FAN_DECRPM),/* L480 */ - TPACPI_Q_LNV('8', 'F', TPACPI_FAN_TPR), /* ThinkPad x120e */ - TPACPI_Q_LNV3('R', '0', '0', TPACPI_FAN_NOACPI),/* E560 */ - TPACPI_Q_LNV3('R', '1', '2', TPACPI_FAN_NOACPI),/* T495 */ - TPACPI_Q_LNV3('R', '1', '3', TPACPI_FAN_NOACPI),/* T495s */ -}; - -static int __init fan_init(struct ibm_init_struct *iibm) -{ - unsigned long quirks; - - vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, - "initializing fan subdriver\n"); - - mutex_init(&fan_mutex); - fan_status_access_mode = TPACPI_FAN_NONE; - fan_control_access_mode = TPACPI_FAN_WR_NONE; - fan_control_commands = 0; - fan_watchdog_maxinterval = 0; - tp_features.fan_ctrl_status_undef = 0; - tp_features.second_fan = 0; - tp_features.second_fan_ctl = 0; - fan_control_desired_level = 7; - - if (tpacpi_is_ibm()) { - TPACPI_ACPIHANDLE_INIT(fans); - TPACPI_ACPIHANDLE_INIT(gfan); - TPACPI_ACPIHANDLE_INIT(sfan); - } - if (tpacpi_is_lenovo()) { - TPACPI_ACPIHANDLE_INIT(fang); - TPACPI_ACPIHANDLE_INIT(fanw); - } - - quirks = tpacpi_check_quirks(fan_quirk_table, - ARRAY_SIZE(fan_quirk_table)); - - if (quirks & TPACPI_FAN_NOFAN) { - pr_info("No integrated ThinkPad fan available\n"); - return -ENODEV; - } - - if (quirks & TPACPI_FAN_NS) { - pr_info("ECFW with non-standard fan reg control found\n"); - fan_with_ns_addr = 1; - /* Fan ctrl support from host is undefined for now */ - tp_features.fan_ctrl_status_undef = 1; - } - - /* Check for the EC/BIOS with RPM reported in decimal*/ - if (quirks & TPACPI_FAN_DECRPM) { - pr_info("ECFW with fan RPM as decimal in EC register\n"); - ecfw_with_fan_dec_rpm = 1; - tp_features.fan_ctrl_status_undef = 1; - } - - if (quirks & TPACPI_FAN_NOACPI) { - /* E560, T495, T495s */ - pr_info("Ignoring buggy ACPI fan access method\n"); - fang_handle = NULL; - fanw_handle = NULL; - } - - if (gfan_handle) { - /* 570, 600e/x, 770e, 770x */ - fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN; - } else if (fang_handle) { - /* E531 */ - fan_status_access_mode = TPACPI_FAN_RD_ACPI_FANG; - } else { - /* all other ThinkPads: note that even old-style - * ThinkPad ECs supports the fan control register */ - if (fan_with_ns_addr || - likely(acpi_ec_read(fan_status_offset, &fan_control_initial_status))) { - int res; - unsigned int speed; - - fan_status_access_mode = fan_with_ns_addr ? - TPACPI_FAN_RD_TPEC_NS : TPACPI_FAN_RD_TPEC; - - if (quirks & TPACPI_FAN_Q1) - fan_quirk1_setup(); - if (quirks & TPACPI_FAN_TPR) - fan_speed_in_tpr = true; - /* Try and probe the 2nd fan */ - tp_features.second_fan = 1; /* needed for get_speed to work */ - res = fan2_get_speed(&speed); - if (res >= 0 && speed != FAN_NOT_PRESENT) { - /* It responded - so let's assume it's there */ - tp_features.second_fan = 1; - /* fan control not currently available for ns ECFW */ - tp_features.second_fan_ctl = !fan_with_ns_addr; - pr_info("secondary fan control detected & enabled\n"); - } else { - /* Fan not auto-detected */ - tp_features.second_fan = 0; - if (quirks & TPACPI_FAN_2FAN) { - tp_features.second_fan = 1; - pr_info("secondary fan support enabled\n"); - } - if (quirks & TPACPI_FAN_2CTL) { - tp_features.second_fan = 1; - tp_features.second_fan_ctl = 1; - pr_info("secondary fan control enabled\n"); - } - } - } else { - pr_err("ThinkPad ACPI EC access misbehaving, fan status and control unavailable\n"); - return -ENODEV; - } - } - - if (sfan_handle) { - /* 570, 770x-JL */ - fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN; - fan_control_commands |= - TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE; - } else if (fanw_handle) { - /* E531 */ - fan_control_access_mode = TPACPI_FAN_WR_ACPI_FANW; - fan_control_commands |= - TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_SPEED | TPACPI_FAN_CMD_ENABLE; - } else { - if (!gfan_handle) { - /* gfan without sfan means no fan control */ - /* all other models implement TP EC 0x2f control */ - - if (fans_handle) { - /* X31, X40, X41 */ - fan_control_access_mode = - TPACPI_FAN_WR_ACPI_FANS; - fan_control_commands |= - TPACPI_FAN_CMD_SPEED | - TPACPI_FAN_CMD_LEVEL | - TPACPI_FAN_CMD_ENABLE; - } else { - fan_control_access_mode = TPACPI_FAN_WR_TPEC; - fan_control_commands |= - TPACPI_FAN_CMD_LEVEL | - TPACPI_FAN_CMD_ENABLE; - } - } - } - - vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, - "fan is %s, modes %d, %d\n", - str_supported(fan_status_access_mode != TPACPI_FAN_NONE || - fan_control_access_mode != TPACPI_FAN_WR_NONE), - fan_status_access_mode, fan_control_access_mode); - - /* fan control master switch */ - if (!fan_control_allowed) { - fan_control_access_mode = TPACPI_FAN_WR_NONE; - fan_control_commands = 0; - dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, - "fan control features disabled by parameter\n"); - } - - /* update fan_control_desired_level */ - if (fan_status_access_mode != TPACPI_FAN_NONE) - fan_get_status_safe(NULL); - - if (fan_status_access_mode == TPACPI_FAN_NONE && - fan_control_access_mode == TPACPI_FAN_WR_NONE) - return -ENODEV; - - return 0; -} - -static void fan_exit(void) -{ - vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN, - "cancelling any pending fan watchdog tasks\n"); - - cancel_delayed_work(&fan_watchdog_task); - flush_workqueue(tpacpi_wq); -} - -static void fan_suspend(void) -{ - int rc; - - if (!fan_control_allowed) - return; - - /* Store fan status in cache */ - fan_control_resume_level = 0; - rc = fan_get_status_safe(&fan_control_resume_level); - if (rc) - pr_notice("failed to read fan level for later restore during resume: %d\n", - rc); - - /* if it is undefined, don't attempt to restore it. - * KEEP THIS LAST */ - if (tp_features.fan_ctrl_status_undef) - fan_control_resume_level = 0; -} - -static void fan_resume(void) -{ - u8 current_level = 7; - bool do_set = false; - int rc; - - /* DSDT *always* updates status on resume */ - tp_features.fan_ctrl_status_undef = 0; - - if (!fan_control_allowed || - !fan_control_resume_level || - fan_get_status_safe(¤t_level)) - return; - - switch (fan_control_access_mode) { - case TPACPI_FAN_WR_ACPI_SFAN: - /* never decrease fan level */ - do_set = (fan_control_resume_level > current_level); - break; - case TPACPI_FAN_WR_ACPI_FANS: - case TPACPI_FAN_WR_TPEC: - /* never decrease fan level, scale is: - * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO - * - * We expect the firmware to set either 7 or AUTO, but we - * handle FULLSPEED out of paranoia. - * - * So, we can safely only restore FULLSPEED or 7, anything - * else could slow the fan. Restoring AUTO is useless, at - * best that's exactly what the DSDT already set (it is the - * slower it uses). - * - * Always keep in mind that the DSDT *will* have set the - * fans to what the vendor supposes is the best level. We - * muck with it only to speed the fan up. - */ - if (fan_control_resume_level != 7 && - !(fan_control_resume_level & TP_EC_FAN_FULLSPEED)) - return; - else - do_set = !(current_level & TP_EC_FAN_FULLSPEED) && - (current_level != fan_control_resume_level); - break; - default: - return; - } - if (do_set) { - pr_notice("restoring fan level to 0x%02x\n", - fan_control_resume_level); - rc = fan_set_level_safe(fan_control_resume_level); - if (rc < 0) - pr_notice("failed to restore fan level: %d\n", rc); - } -} - -static int fan_read(struct seq_file *m) -{ - int rc; - u8 status; - unsigned int speed = 0; - - switch (fan_status_access_mode) { - case TPACPI_FAN_RD_ACPI_GFAN: - /* 570, 600e/x, 770e, 770x */ - rc = fan_get_status_safe(&status); - if (rc) - return rc; - - seq_printf(m, "status:\t\t%s\n" - "level:\t\t%d\n", - str_enabled_disabled(status), status); - break; - - case TPACPI_FAN_RD_TPEC_NS: - case TPACPI_FAN_RD_TPEC: - case TPACPI_FAN_RD_ACPI_FANG: - /* all except 570, 600e/x, 770e, 770x */ - rc = fan_get_status_safe(&status); - if (rc) - return rc; - - seq_printf(m, "status:\t\t%s\n", str_enabled_disabled(status)); - - rc = fan_get_speed(&speed); - if (rc < 0) - return rc; - - /* Check for fan speeds displayed in hexadecimal */ - if (!ecfw_with_fan_dec_rpm) - seq_printf(m, "speed:\t\t%d\n", speed); - else - seq_printf(m, "speed:\t\t%x\n", speed); - - if (fan_status_access_mode == TPACPI_FAN_RD_TPEC_NS) { - /* - * No full speed bit in NS EC - * EC Auto mode is set by default. - * No other levels settings available - */ - seq_printf(m, "level:\t\t%s\n", status & FAN_NS_CTRL ? "unknown" : "auto"); - } else if (fan_status_access_mode == TPACPI_FAN_RD_TPEC) { - if (status & TP_EC_FAN_FULLSPEED) - /* Disengaged mode takes precedence */ - seq_printf(m, "level:\t\tdisengaged\n"); - else if (status & TP_EC_FAN_AUTO) - seq_printf(m, "level:\t\tauto\n"); - else - seq_printf(m, "level:\t\t%d\n", status); - } - break; - - case TPACPI_FAN_NONE: - default: - seq_printf(m, "status:\t\tnot supported\n"); - } - - if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) { - seq_printf(m, "commands:\tlevel <level>"); - - switch (fan_control_access_mode) { - case TPACPI_FAN_WR_ACPI_SFAN: - seq_printf(m, " (<level> is 0-7)\n"); - break; - - default: - seq_printf(m, " (<level> is 0-7, auto, disengaged, full-speed)\n"); - break; - } - } - - if (fan_control_commands & TPACPI_FAN_CMD_ENABLE) - seq_printf(m, "commands:\tenable, disable\n" - "commands:\twatchdog <timeout> (<timeout> is 0 (off), 1-120 (seconds))\n"); - - if (fan_control_commands & TPACPI_FAN_CMD_SPEED) - seq_printf(m, "commands:\tspeed <speed> (<speed> is 0-65535)\n"); - - return 0; -} - -static int fan_write_cmd_level(const char *cmd, int *rc) -{ - int level; - - if (strstarts(cmd, "level auto")) - level = TP_EC_FAN_AUTO; - else if (strstarts(cmd, "level disengaged") || strstarts(cmd, "level full-speed")) - level = TP_EC_FAN_FULLSPEED; - else if (sscanf(cmd, "level %d", &level) != 1) - return 0; - - *rc = fan_set_level_safe(level); - if (*rc == -ENXIO) - pr_err("level command accepted for unsupported access mode %d\n", - fan_control_access_mode); - else if (!*rc) - tpacpi_disclose_usertask("procfs fan", - "set level to %d\n", level); - - return 1; -} - -static int fan_write_cmd_enable(const char *cmd, int *rc) -{ - if (!strstarts(cmd, "enable")) - return 0; - - *rc = fan_set_enable(); - if (*rc == -ENXIO) - pr_err("enable command accepted for unsupported access mode %d\n", - fan_control_access_mode); - else if (!*rc) - tpacpi_disclose_usertask("procfs fan", "enable\n"); - - return 1; -} - -static int fan_write_cmd_disable(const char *cmd, int *rc) -{ - if (!strstarts(cmd, "disable")) - return 0; - - *rc = fan_set_disable(); - if (*rc == -ENXIO) - pr_err("disable command accepted for unsupported access mode %d\n", - fan_control_access_mode); - else if (!*rc) - tpacpi_disclose_usertask("procfs fan", "disable\n"); - - return 1; -} - -static int fan_write_cmd_speed(const char *cmd, int *rc) -{ - int speed; - - /* TODO: - * Support speed <low> <medium> <high> ? */ - - if (sscanf(cmd, "speed %d", &speed) != 1) - return 0; - - *rc = fan_set_speed(speed); - if (*rc == -ENXIO) - pr_err("speed command accepted for unsupported access mode %d\n", - fan_control_access_mode); - else if (!*rc) - tpacpi_disclose_usertask("procfs fan", - "set speed to %d\n", speed); - - return 1; -} - -static int fan_write_cmd_watchdog(const char *cmd, int *rc) -{ - int interval; - - if (sscanf(cmd, "watchdog %d", &interval) != 1) - return 0; - - if (interval < 0 || interval > 120) - *rc = -EINVAL; - else { - fan_watchdog_maxinterval = interval; - tpacpi_disclose_usertask("procfs fan", - "set watchdog timer to %d\n", - interval); - } - - return 1; -} - -static int fan_write(char *buf) -{ - char *cmd; - int rc = 0; - - while (!rc && (cmd = strsep(&buf, ","))) { - if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) && - fan_write_cmd_level(cmd, &rc)) && - !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) && - (fan_write_cmd_enable(cmd, &rc) || - fan_write_cmd_disable(cmd, &rc) || - fan_write_cmd_watchdog(cmd, &rc))) && - !((fan_control_commands & TPACPI_FAN_CMD_SPEED) && - fan_write_cmd_speed(cmd, &rc)) - ) - rc = -EINVAL; - else if (!rc) - fan_watchdog_reset(); - } - - return rc; -} - -static struct ibm_struct fan_driver_data = { - .name = "fan", - .read = fan_read, - .write = fan_write, - .exit = fan_exit, - .suspend = fan_suspend, - .resume = fan_resume, -}; - -/************************************************************************* - * Mute LED subdriver - */ - -#define TPACPI_LED_MAX 2 - -struct tp_led_table { - acpi_string name; - int on_value; - int off_value; - int state; -}; - -static struct tp_led_table led_tables[TPACPI_LED_MAX] = { - [LED_AUDIO_MUTE] = { - .name = "SSMS", - .on_value = 1, - .off_value = 0, - }, - [LED_AUDIO_MICMUTE] = { - .name = "MMTS", - .on_value = 2, - .off_value = 0, - }, -}; - -static int mute_led_on_off(struct tp_led_table *t, bool state) -{ - acpi_handle temp; - int output; - - if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) { - pr_warn("Thinkpad ACPI has no %s interface.\n", t->name); - return -EIO; - } - - if (!acpi_evalf(hkey_handle, &output, t->name, "dd", - state ? t->on_value : t->off_value)) - return -EIO; - - t->state = state; - return state; -} - -static int tpacpi_led_set(int whichled, bool on) -{ - struct tp_led_table *t; - - t = &led_tables[whichled]; - if (t->state < 0 || t->state == on) - return t->state; - return mute_led_on_off(t, on); -} - -static int tpacpi_led_mute_set(struct led_classdev *led_cdev, - enum led_brightness brightness) -{ - return tpacpi_led_set(LED_AUDIO_MUTE, brightness != LED_OFF); -} - -static int tpacpi_led_micmute_set(struct led_classdev *led_cdev, - enum led_brightness brightness) -{ - return tpacpi_led_set(LED_AUDIO_MICMUTE, brightness != LED_OFF); -} - -static struct led_classdev mute_led_cdev[TPACPI_LED_MAX] = { - [LED_AUDIO_MUTE] = { - .name = "platform::mute", - .max_brightness = 1, - .brightness_set_blocking = tpacpi_led_mute_set, - .default_trigger = "audio-mute", - }, - [LED_AUDIO_MICMUTE] = { - .name = "platform::micmute", - .max_brightness = 1, - .brightness_set_blocking = tpacpi_led_micmute_set, - .default_trigger = "audio-micmute", - }, -}; - -static int mute_led_init(struct ibm_init_struct *iibm) -{ - acpi_handle temp; - int i, err; - - for (i = 0; i < TPACPI_LED_MAX; i++) { - struct tp_led_table *t = &led_tables[i]; - if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) { - t->state = -ENODEV; - continue; - } - - err = led_classdev_register(&tpacpi_pdev->dev, &mute_led_cdev[i]); - if (err < 0) { - while (i--) - led_classdev_unregister(&mute_led_cdev[i]); - return err; - } - } - return 0; -} - -static void mute_led_exit(void) -{ - int i; - - for (i = 0; i < TPACPI_LED_MAX; i++) { - led_classdev_unregister(&mute_led_cdev[i]); - tpacpi_led_set(i, false); - } -} - -static void mute_led_resume(void) -{ - int i; - - for (i = 0; i < TPACPI_LED_MAX; i++) { - struct tp_led_table *t = &led_tables[i]; - if (t->state >= 0) - mute_led_on_off(t, t->state); - } -} - -static struct ibm_struct mute_led_driver_data = { - .name = "mute_led", - .exit = mute_led_exit, - .resume = mute_led_resume, -}; - -/* - * Battery Wear Control Driver - * Contact: Ognjen Galic <smclt30p@gmail.com> - */ - -/* Metadata */ - -#define GET_START "BCTG" -#define SET_START "BCCS" -#define GET_STOP "BCSG" -#define SET_STOP "BCSS" -#define GET_DISCHARGE "BDSG" -#define SET_DISCHARGE "BDSS" -#define GET_INHIBIT "BICG" -#define SET_INHIBIT "BICS" - -enum { - BAT_ANY = 0, - BAT_PRIMARY = 1, - BAT_SECONDARY = 2 -}; - -enum { - /* Error condition bit */ - METHOD_ERR = BIT(31), -}; - -enum { - /* This is used in the get/set helpers */ - THRESHOLD_START, - THRESHOLD_STOP, - FORCE_DISCHARGE, - INHIBIT_CHARGE, -}; - -struct tpacpi_battery_data { - int charge_start; - int start_support; - int charge_stop; - int stop_support; - unsigned int charge_behaviours; -}; - -struct tpacpi_battery_driver_data { - struct tpacpi_battery_data batteries[3]; - int individual_addressing; -}; - -static struct tpacpi_battery_driver_data battery_info; - -/* ACPI helpers/functions/probes */ - -/* - * This evaluates a ACPI method call specific to the battery - * ACPI extension. The specifics are that an error is marked - * in the 32rd bit of the response, so we just check that here. - */ -static acpi_status tpacpi_battery_acpi_eval(char *method, int *ret, int param) -{ - int response; - - if (!acpi_evalf(hkey_handle, &response, method, "dd", param)) { - acpi_handle_err(hkey_handle, "%s: evaluate failed", method); - return AE_ERROR; - } - if (response & METHOD_ERR) { - acpi_handle_err(hkey_handle, - "%s evaluated but flagged as error", method); - return AE_ERROR; - } - *ret = response; - return AE_OK; -} - -static int tpacpi_battery_get(int what, int battery, int *ret) -{ - switch (what) { - case THRESHOLD_START: - if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, ret, battery)) - return -ENODEV; - - /* The value is in the low 8 bits of the response */ - *ret = *ret & 0xFF; - return 0; - case THRESHOLD_STOP: - if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, ret, battery)) - return -ENODEV; - /* Value is in lower 8 bits */ - *ret = *ret & 0xFF; - /* - * On the stop value, if we return 0 that - * does not make any sense. 0 means Default, which - * means that charging stops at 100%, so we return - * that. - */ - if (*ret == 0) - *ret = 100; - return 0; - case FORCE_DISCHARGE: - if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_DISCHARGE, ret, battery)) - return -ENODEV; - /* The force discharge status is in bit 0 */ - *ret = *ret & 0x01; - return 0; - case INHIBIT_CHARGE: - if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_INHIBIT, ret, battery)) - return -ENODEV; - /* The inhibit charge status is in bit 0 */ - *ret = *ret & 0x01; - return 0; - default: - pr_crit("wrong parameter: %d", what); - return -EINVAL; - } -} - -static int tpacpi_battery_set(int what, int battery, int value) -{ - int param, ret; - /* The first 8 bits are the value of the threshold */ - param = value; - /* The battery ID is in bits 8-9, 2 bits */ - param |= battery << 8; - - switch (what) { - case THRESHOLD_START: - if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_START, &ret, param)) { - pr_err("failed to set charge threshold on battery %d", - battery); - return -ENODEV; - } - return 0; - case THRESHOLD_STOP: - if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_STOP, &ret, param)) { - pr_err("failed to set stop threshold: %d", battery); - return -ENODEV; - } - return 0; - case FORCE_DISCHARGE: - /* Force discharge is in bit 0, - * break on AC attach is in bit 1 (won't work on some ThinkPads), - * battery ID is in bits 8-9, 2 bits. - */ - if (ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_DISCHARGE, &ret, param))) { - pr_err("failed to set force discharge on %d", battery); - return -ENODEV; - } - return 0; - case INHIBIT_CHARGE: - /* When setting inhibit charge, we set a default value of - * always breaking on AC detach and the effective time is set to - * be permanent. - * The battery ID is in bits 4-5, 2 bits, - * the effective time is in bits 8-23, 2 bytes. - * A time of FFFF indicates forever. - */ - param = value; - param |= battery << 4; - param |= 0xFFFF << 8; - if (ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_INHIBIT, &ret, param))) { - pr_err("failed to set inhibit charge on %d", battery); - return -ENODEV; - } - return 0; - default: - pr_crit("wrong parameter: %d", what); - return -EINVAL; - } -} - -static int tpacpi_battery_set_validate(int what, int battery, int value) -{ - int ret, v; - - ret = tpacpi_battery_set(what, battery, value); - if (ret < 0) - return ret; - - ret = tpacpi_battery_get(what, battery, &v); - if (ret < 0) - return ret; - - if (v == value) - return 0; - - msleep(500); - - ret = tpacpi_battery_get(what, battery, &v); - if (ret < 0) - return ret; - - if (v == value) - return 0; - - return -EIO; -} - -static int tpacpi_battery_probe(int battery) -{ - int ret = 0; - - memset(&battery_info.batteries[battery], 0, - sizeof(battery_info.batteries[battery])); - - /* - * 1) Get the current start threshold - * 2) Check for support - * 3) Get the current stop threshold - * 4) Check for support - * 5) Get the current force discharge status - * 6) Check for support - * 7) Get the current inhibit charge status - * 8) Check for support - */ - if (acpi_has_method(hkey_handle, GET_START)) { - if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, &ret, battery)) { - pr_err("Error probing battery %d\n", battery); - return -ENODEV; - } - /* Individual addressing is in bit 9 */ - if (ret & BIT(9)) - battery_info.individual_addressing = true; - /* Support is marked in bit 8 */ - if (ret & BIT(8)) - battery_info.batteries[battery].start_support = 1; - else - return -ENODEV; - if (tpacpi_battery_get(THRESHOLD_START, battery, - &battery_info.batteries[battery].charge_start)) { - pr_err("Error probing battery %d\n", battery); - return -ENODEV; - } - } - if (acpi_has_method(hkey_handle, GET_STOP)) { - if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, &ret, battery)) { - pr_err("Error probing battery stop; %d\n", battery); - return -ENODEV; - } - /* Support is marked in bit 8 */ - if (ret & BIT(8)) - battery_info.batteries[battery].stop_support = 1; - else - return -ENODEV; - if (tpacpi_battery_get(THRESHOLD_STOP, battery, - &battery_info.batteries[battery].charge_stop)) { - pr_err("Error probing battery stop: %d\n", battery); - return -ENODEV; - } - } - if (acpi_has_method(hkey_handle, GET_DISCHARGE)) { - if (ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_DISCHARGE, &ret, battery))) { - pr_err("Error probing battery discharge; %d\n", battery); - return -ENODEV; - } - /* Support is marked in bit 8 */ - if (ret & BIT(8)) - battery_info.batteries[battery].charge_behaviours |= - BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE); - } - if (acpi_has_method(hkey_handle, GET_INHIBIT)) { - if (ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_INHIBIT, &ret, battery))) { - pr_err("Error probing battery inhibit charge; %d\n", battery); - return -ENODEV; - } - /* Support is marked in bit 5 */ - if (ret & BIT(5)) - battery_info.batteries[battery].charge_behaviours |= - BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE); - } - - battery_info.batteries[battery].charge_behaviours |= - BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO); - - pr_info("battery %d registered (start %d, stop %d, behaviours: 0x%x)\n", - battery, - battery_info.batteries[battery].charge_start, - battery_info.batteries[battery].charge_stop, - battery_info.batteries[battery].charge_behaviours); - - return 0; -} - -/* General helper functions */ - -static int tpacpi_battery_get_id(const char *battery_name) -{ - - if (strcmp(battery_name, "BAT0") == 0 || - tp_features.battery_force_primary) - return BAT_PRIMARY; - if (strcmp(battery_name, "BAT1") == 0) - return BAT_SECONDARY; - /* - * If for some reason the battery is not BAT0 nor is it - * BAT1, we will assume it's the default, first battery, - * AKA primary. - */ - pr_warn("unknown battery %s, assuming primary", battery_name); - return BAT_PRIMARY; -} - -/* sysfs interface */ - -static ssize_t tpacpi_battery_store(int what, - struct device *dev, - const char *buf, size_t count) -{ - struct power_supply *supply = to_power_supply(dev); - unsigned long value; - int battery, rval; - /* - * Some systems have support for more than - * one battery. If that is the case, - * tpacpi_battery_probe marked that addressing - * them individually is supported, so we do that - * based on the device struct. - * - * On systems that are not supported, we assume - * the primary as most of the ACPI calls fail - * with "Any Battery" as the parameter. - */ - if (battery_info.individual_addressing) - /* BAT_PRIMARY or BAT_SECONDARY */ - battery = tpacpi_battery_get_id(supply->desc->name); - else - battery = BAT_PRIMARY; - - rval = kstrtoul(buf, 10, &value); - if (rval) - return rval; - - switch (what) { - case THRESHOLD_START: - if (!battery_info.batteries[battery].start_support) - return -ENODEV; - /* valid values are [0, 99] */ - if (value > 99) - return -EINVAL; - if (value > battery_info.batteries[battery].charge_stop) - return -EINVAL; - if (tpacpi_battery_set(THRESHOLD_START, battery, value)) - return -ENODEV; - battery_info.batteries[battery].charge_start = value; - return count; - - case THRESHOLD_STOP: - if (!battery_info.batteries[battery].stop_support) - return -ENODEV; - /* valid values are [1, 100] */ - if (value < 1 || value > 100) - return -EINVAL; - if (value < battery_info.batteries[battery].charge_start) - return -EINVAL; - battery_info.batteries[battery].charge_stop = value; - /* - * When 100 is passed to stop, we need to flip - * it to 0 as that the EC understands that as - * "Default", which will charge to 100% - */ - if (value == 100) - value = 0; - if (tpacpi_battery_set(THRESHOLD_STOP, battery, value)) - return -EINVAL; - return count; - default: - pr_crit("Wrong parameter: %d", what); - return -EINVAL; - } - return count; -} - -static ssize_t tpacpi_battery_show(int what, - struct device *dev, - char *buf) -{ - struct power_supply *supply = to_power_supply(dev); - int ret, battery; - /* - * Some systems have support for more than - * one battery. If that is the case, - * tpacpi_battery_probe marked that addressing - * them individually is supported, so we; - * based on the device struct. - * - * On systems that are not supported, we assume - * the primary as most of the ACPI calls fail - * with "Any Battery" as the parameter. - */ - if (battery_info.individual_addressing) - /* BAT_PRIMARY or BAT_SECONDARY */ - battery = tpacpi_battery_get_id(supply->desc->name); - else - battery = BAT_PRIMARY; - if (tpacpi_battery_get(what, battery, &ret)) - return -ENODEV; - return sysfs_emit(buf, "%d\n", ret); -} - -static ssize_t charge_control_start_threshold_show(struct device *device, - struct device_attribute *attr, - char *buf) -{ - return tpacpi_battery_show(THRESHOLD_START, device, buf); -} - -static ssize_t charge_control_end_threshold_show(struct device *device, - struct device_attribute *attr, - char *buf) -{ - return tpacpi_battery_show(THRESHOLD_STOP, device, buf); -} - -static ssize_t charge_behaviour_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - enum power_supply_charge_behaviour active = POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO; - struct power_supply *supply = to_power_supply(dev); - unsigned int available; - int ret, battery; - - battery = tpacpi_battery_get_id(supply->desc->name); - available = battery_info.batteries[battery].charge_behaviours; - - if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE)) { - if (tpacpi_battery_get(FORCE_DISCHARGE, battery, &ret)) - return -ENODEV; - if (ret) { - active = POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE; - goto out; - } - } - - if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE)) { - if (tpacpi_battery_get(INHIBIT_CHARGE, battery, &ret)) - return -ENODEV; - if (ret) { - active = POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE; - goto out; - } - } - -out: - return power_supply_charge_behaviour_show(dev, available, active, buf); -} - -static ssize_t charge_control_start_threshold_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - return tpacpi_battery_store(THRESHOLD_START, dev, buf, count); -} - -static ssize_t charge_control_end_threshold_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - return tpacpi_battery_store(THRESHOLD_STOP, dev, buf, count); -} - -static ssize_t charge_behaviour_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - struct power_supply *supply = to_power_supply(dev); - int selected, battery, ret = 0; - unsigned int available; - - battery = tpacpi_battery_get_id(supply->desc->name); - available = battery_info.batteries[battery].charge_behaviours; - selected = power_supply_charge_behaviour_parse(available, buf); - - if (selected < 0) - return selected; - - switch (selected) { - case POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO: - if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE)) - ret = tpacpi_battery_set_validate(FORCE_DISCHARGE, battery, 0); - if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE)) - ret = min(ret, tpacpi_battery_set_validate(INHIBIT_CHARGE, battery, 0)); - if (ret < 0) - return ret; - break; - case POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE: - if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE)) - ret = tpacpi_battery_set_validate(INHIBIT_CHARGE, battery, 0); - ret = min(ret, tpacpi_battery_set_validate(FORCE_DISCHARGE, battery, 1)); - if (ret < 0) - return ret; - break; - case POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE: - if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE)) - ret = tpacpi_battery_set_validate(FORCE_DISCHARGE, battery, 0); - ret = min(ret, tpacpi_battery_set_validate(INHIBIT_CHARGE, battery, 1)); - if (ret < 0) - return ret; - break; - default: - dev_err(dev, "Unexpected charge behaviour: %d\n", selected); - return -EINVAL; - } - - return count; -} - -static DEVICE_ATTR_RW(charge_control_start_threshold); -static DEVICE_ATTR_RW(charge_control_end_threshold); -static DEVICE_ATTR_RW(charge_behaviour); -static struct device_attribute dev_attr_charge_start_threshold = __ATTR( - charge_start_threshold, - 0644, - charge_control_start_threshold_show, - charge_control_start_threshold_store -); -static struct device_attribute dev_attr_charge_stop_threshold = __ATTR( - charge_stop_threshold, - 0644, - charge_control_end_threshold_show, - charge_control_end_threshold_store -); - -static struct attribute *tpacpi_battery_attrs[] = { - &dev_attr_charge_control_start_threshold.attr, - &dev_attr_charge_control_end_threshold.attr, - &dev_attr_charge_start_threshold.attr, - &dev_attr_charge_stop_threshold.attr, - &dev_attr_charge_behaviour.attr, - NULL, -}; - -ATTRIBUTE_GROUPS(tpacpi_battery); - -/* ACPI battery hooking */ - -static int tpacpi_battery_add(struct power_supply *battery, struct acpi_battery_hook *hook) -{ - int batteryid = tpacpi_battery_get_id(battery->desc->name); - - if (tpacpi_battery_probe(batteryid)) - return -ENODEV; - if (device_add_groups(&battery->dev, tpacpi_battery_groups)) - return -ENODEV; - return 0; -} - -static int tpacpi_battery_remove(struct power_supply *battery, struct acpi_battery_hook *hook) -{ - device_remove_groups(&battery->dev, tpacpi_battery_groups); - return 0; -} - -static struct acpi_battery_hook battery_hook = { - .add_battery = tpacpi_battery_add, - .remove_battery = tpacpi_battery_remove, - .name = "ThinkPad Battery Extension", -}; - -/* Subdriver init/exit */ - -static const struct tpacpi_quirk battery_quirk_table[] __initconst = { - /* - * Individual addressing is broken on models that expose the - * primary battery as BAT1. - */ - TPACPI_Q_LNV('G', '8', true), /* ThinkPad X131e */ - TPACPI_Q_LNV('8', 'F', true), /* Thinkpad X120e */ - TPACPI_Q_LNV('J', '7', true), /* B5400 */ - TPACPI_Q_LNV('J', 'I', true), /* Thinkpad 11e */ - TPACPI_Q_LNV3('R', '0', 'B', true), /* Thinkpad 11e gen 3 */ - TPACPI_Q_LNV3('R', '0', 'C', true), /* Thinkpad 13 */ - TPACPI_Q_LNV3('R', '0', 'J', true), /* Thinkpad 13 gen 2 */ - TPACPI_Q_LNV3('R', '0', 'K', true), /* Thinkpad 11e gen 4 celeron BIOS */ -}; - -static int __init tpacpi_battery_init(struct ibm_init_struct *ibm) -{ - memset(&battery_info, 0, sizeof(battery_info)); - - tp_features.battery_force_primary = tpacpi_check_quirks( - battery_quirk_table, - ARRAY_SIZE(battery_quirk_table)); - - battery_hook_register(&battery_hook); - return 0; -} - -static void tpacpi_battery_exit(void) -{ - battery_hook_unregister(&battery_hook); -} - -static struct ibm_struct battery_driver_data = { - .name = "battery", - .exit = tpacpi_battery_exit, -}; - -/************************************************************************* - * LCD Shadow subdriver, for the Lenovo PrivacyGuard feature - */ - -static struct drm_privacy_screen *lcdshadow_dev; -static acpi_handle lcdshadow_get_handle; -static acpi_handle lcdshadow_set_handle; - -static int lcdshadow_set_sw_state(struct drm_privacy_screen *priv, - enum drm_privacy_screen_status state) -{ - int output; - - if (WARN_ON(!mutex_is_locked(&priv->lock))) - return -EIO; - - if (!acpi_evalf(lcdshadow_set_handle, &output, NULL, "dd", (int)state)) - return -EIO; - - priv->hw_state = priv->sw_state = state; - return 0; -} - -static void lcdshadow_get_hw_state(struct drm_privacy_screen *priv) -{ - int output; - - if (!acpi_evalf(lcdshadow_get_handle, &output, NULL, "dd", 0)) - return; - - priv->hw_state = priv->sw_state = output & 0x1; -} - -static const struct drm_privacy_screen_ops lcdshadow_ops = { - .set_sw_state = lcdshadow_set_sw_state, - .get_hw_state = lcdshadow_get_hw_state, -}; - -static int tpacpi_lcdshadow_init(struct ibm_init_struct *iibm) -{ - acpi_status status1, status2; - int output; - - status1 = acpi_get_handle(hkey_handle, "GSSS", &lcdshadow_get_handle); - status2 = acpi_get_handle(hkey_handle, "SSSS", &lcdshadow_set_handle); - if (ACPI_FAILURE(status1) || ACPI_FAILURE(status2)) - return 0; - - if (!acpi_evalf(lcdshadow_get_handle, &output, NULL, "dd", 0)) - return -EIO; - - if (!(output & 0x10000)) - return 0; - - lcdshadow_dev = drm_privacy_screen_register(&tpacpi_pdev->dev, - &lcdshadow_ops, NULL); - if (IS_ERR(lcdshadow_dev)) - return PTR_ERR(lcdshadow_dev); - - return 0; -} - -static void lcdshadow_exit(void) -{ - drm_privacy_screen_unregister(lcdshadow_dev); -} - -static void lcdshadow_resume(void) -{ - if (!lcdshadow_dev) - return; - - mutex_lock(&lcdshadow_dev->lock); - lcdshadow_set_sw_state(lcdshadow_dev, lcdshadow_dev->sw_state); - mutex_unlock(&lcdshadow_dev->lock); -} - -static int lcdshadow_read(struct seq_file *m) -{ - if (!lcdshadow_dev) { - seq_puts(m, "status:\t\tnot supported\n"); - } else { - seq_printf(m, "status:\t\t%d\n", lcdshadow_dev->hw_state); - seq_puts(m, "commands:\t0, 1\n"); - } - - return 0; -} - -static int lcdshadow_write(char *buf) -{ - char *cmd; - int res, state = -EINVAL; - - if (!lcdshadow_dev) - return -ENODEV; - - while ((cmd = strsep(&buf, ","))) { - res = kstrtoint(cmd, 10, &state); - if (res < 0) - return res; - } - - if (state >= 2 || state < 0) - return -EINVAL; - - mutex_lock(&lcdshadow_dev->lock); - res = lcdshadow_set_sw_state(lcdshadow_dev, state); - mutex_unlock(&lcdshadow_dev->lock); - - drm_privacy_screen_call_notifier_chain(lcdshadow_dev); - - return res; -} - -static struct ibm_struct lcdshadow_driver_data = { - .name = "lcdshadow", - .exit = lcdshadow_exit, - .resume = lcdshadow_resume, - .read = lcdshadow_read, - .write = lcdshadow_write, -}; - -/************************************************************************* - * Thinkpad sensor interfaces - */ - -#define DYTC_CMD_QUERY 0 /* To get DYTC status - enable/revision */ -#define DYTC_QUERY_ENABLE_BIT 8 /* Bit 8 - 0 = disabled, 1 = enabled */ -#define DYTC_QUERY_SUBREV_BIT 16 /* Bits 16 - 27 - sub revision */ -#define DYTC_QUERY_REV_BIT 28 /* Bits 28 - 31 - revision */ - -#define DYTC_CMD_GET 2 /* To get current IC function and mode */ -#define DYTC_GET_LAPMODE_BIT 17 /* Set when in lapmode */ - -#define PALMSENSOR_PRESENT_BIT 0 /* Determine if psensor present */ -#define PALMSENSOR_ON_BIT 1 /* psensor status */ - -static bool has_palmsensor; -static bool has_lapsensor; -static bool palm_state; -static bool lap_state; -static int dytc_version; - -static int dytc_command(int command, int *output) -{ - acpi_handle dytc_handle; - - if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "DYTC", &dytc_handle))) { - /* Platform doesn't support DYTC */ - return -ENODEV; - } - if (!acpi_evalf(dytc_handle, output, NULL, "dd", command)) - return -EIO; - return 0; -} - -static int lapsensor_get(bool *present, bool *state) -{ - int output, err; - - *present = false; - err = dytc_command(DYTC_CMD_GET, &output); - if (err) - return err; - - *present = true; /*If we get his far, we have lapmode support*/ - *state = output & BIT(DYTC_GET_LAPMODE_BIT) ? true : false; - return 0; -} - -static int palmsensor_get(bool *present, bool *state) -{ - acpi_handle psensor_handle; - int output; - - *present = false; - if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GPSS", &psensor_handle))) - return -ENODEV; - if (!acpi_evalf(psensor_handle, &output, NULL, "d")) - return -EIO; - - *present = output & BIT(PALMSENSOR_PRESENT_BIT) ? true : false; - *state = output & BIT(PALMSENSOR_ON_BIT) ? true : false; - return 0; -} - -static void lapsensor_refresh(void) -{ - bool state; - int err; - - if (has_lapsensor) { - err = lapsensor_get(&has_lapsensor, &state); - if (err) - return; - if (lap_state != state) { - lap_state = state; - sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "dytc_lapmode"); - } - } -} - -static void palmsensor_refresh(void) -{ - bool state; - int err; - - if (has_palmsensor) { - err = palmsensor_get(&has_palmsensor, &state); - if (err) - return; - if (palm_state != state) { - palm_state = state; - sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "palmsensor"); - } - } -} - -static ssize_t dytc_lapmode_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - if (has_lapsensor) - return sysfs_emit(buf, "%d\n", lap_state); - return sysfs_emit(buf, "\n"); -} -static DEVICE_ATTR_RO(dytc_lapmode); - -static ssize_t palmsensor_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - if (has_palmsensor) - return sysfs_emit(buf, "%d\n", palm_state); - return sysfs_emit(buf, "\n"); -} -static DEVICE_ATTR_RO(palmsensor); - -static struct attribute *proxsensor_attributes[] = { - &dev_attr_dytc_lapmode.attr, - &dev_attr_palmsensor.attr, - NULL -}; - -static umode_t proxsensor_attr_is_visible(struct kobject *kobj, - struct attribute *attr, int n) -{ - if (attr == &dev_attr_dytc_lapmode.attr) { - /* - * Platforms before DYTC version 5 claim to have a lap sensor, - * but it doesn't work, so we ignore them. - */ - if (!has_lapsensor || dytc_version < 5) - return 0; - } else if (attr == &dev_attr_palmsensor.attr) { - if (!has_palmsensor) - return 0; - } - - return attr->mode; -} - -static const struct attribute_group proxsensor_attr_group = { - .is_visible = proxsensor_attr_is_visible, - .attrs = proxsensor_attributes, -}; - -static int tpacpi_proxsensor_init(struct ibm_init_struct *iibm) -{ - int palm_err, lap_err; - - palm_err = palmsensor_get(&has_palmsensor, &palm_state); - lap_err = lapsensor_get(&has_lapsensor, &lap_state); - /* If support isn't available for both devices return -ENODEV */ - if ((palm_err == -ENODEV) && (lap_err == -ENODEV)) - return -ENODEV; - /* Otherwise, if there was an error return it */ - if (palm_err && (palm_err != -ENODEV)) - return palm_err; - if (lap_err && (lap_err != -ENODEV)) - return lap_err; - - return 0; -} - -static struct ibm_struct proxsensor_driver_data = { - .name = "proximity-sensor", -}; - -/************************************************************************* - * DYTC Platform Profile interface - */ - -#define DYTC_CMD_SET 1 /* To enable/disable IC function mode */ -#define DYTC_CMD_MMC_GET 8 /* To get current MMC function and mode */ -#define DYTC_CMD_RESET 0x1ff /* To reset back to default */ - -#define DYTC_CMD_FUNC_CAP 3 /* To get DYTC capabilities */ -#define DYTC_FC_MMC 27 /* MMC Mode supported */ -#define DYTC_FC_PSC 29 /* PSC Mode supported */ -#define DYTC_FC_AMT 31 /* AMT mode supported */ - -#define DYTC_GET_FUNCTION_BIT 8 /* Bits 8-11 - function setting */ -#define DYTC_GET_MODE_BIT 12 /* Bits 12-15 - mode setting */ - -#define DYTC_SET_FUNCTION_BIT 12 /* Bits 12-15 - function setting */ -#define DYTC_SET_MODE_BIT 16 /* Bits 16-19 - mode setting */ -#define DYTC_SET_VALID_BIT 20 /* Bit 20 - 1 = on, 0 = off */ - -#define DYTC_FUNCTION_STD 0 /* Function = 0, standard mode */ -#define DYTC_FUNCTION_CQL 1 /* Function = 1, lap mode */ -#define DYTC_FUNCTION_MMC 11 /* Function = 11, MMC mode */ -#define DYTC_FUNCTION_PSC 13 /* Function = 13, PSC mode */ -#define DYTC_FUNCTION_AMT 15 /* Function = 15, AMT mode */ - -#define DYTC_MODE_AMT_ENABLE 0x1 /* Enable AMT (in balanced mode) */ -#define DYTC_MODE_AMT_DISABLE 0xF /* Disable AMT (in other modes) */ - -#define DYTC_MODE_MMC_PERFORM 2 /* High power mode aka performance */ -#define DYTC_MODE_MMC_LOWPOWER 3 /* Low power mode */ -#define DYTC_MODE_MMC_BALANCE 0xF /* Default mode aka balanced */ -#define DYTC_MODE_MMC_DEFAULT 0 /* Default mode from MMC_GET, aka balanced */ - -#define DYTC_MODE_PSC_LOWPOWER 3 /* Low power mode */ -#define DYTC_MODE_PSC_BALANCE 5 /* Default mode aka balanced */ -#define DYTC_MODE_PSC_PERFORM 7 /* High power mode aka performance */ - -#define DYTC_MODE_PSCV9_LOWPOWER 1 /* Low power mode */ -#define DYTC_MODE_PSCV9_BALANCE 3 /* Default mode aka balanced */ -#define DYTC_MODE_PSCV9_PERFORM 4 /* High power mode aka performance */ - -#define DYTC_ERR_MASK 0xF /* Bits 0-3 in cmd result are the error result */ -#define DYTC_ERR_SUCCESS 1 /* CMD completed successful */ - -#define DYTC_SET_COMMAND(function, mode, on) \ - (DYTC_CMD_SET | (function) << DYTC_SET_FUNCTION_BIT | \ - (mode) << DYTC_SET_MODE_BIT | \ - (on) << DYTC_SET_VALID_BIT) - -#define DYTC_DISABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_MMC_BALANCE, 0) -#define DYTC_ENABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_MMC_BALANCE, 1) -static int dytc_control_amt(bool enable); -static bool dytc_amt_active; - -static enum platform_profile_option dytc_current_profile; -static atomic_t dytc_ignore_event = ATOMIC_INIT(0); -static DEFINE_MUTEX(dytc_mutex); -static int dytc_capabilities; -static bool dytc_mmc_get_available; -static int profile_force; - -static int platform_psc_profile_lowpower = DYTC_MODE_PSC_LOWPOWER; -static int platform_psc_profile_balanced = DYTC_MODE_PSC_BALANCE; -static int platform_psc_profile_performance = DYTC_MODE_PSC_PERFORM; - -static int convert_dytc_to_profile(int funcmode, int dytcmode, - enum platform_profile_option *profile) -{ - switch (funcmode) { - case DYTC_FUNCTION_MMC: - switch (dytcmode) { - case DYTC_MODE_MMC_LOWPOWER: - *profile = PLATFORM_PROFILE_LOW_POWER; - break; - case DYTC_MODE_MMC_DEFAULT: - case DYTC_MODE_MMC_BALANCE: - *profile = PLATFORM_PROFILE_BALANCED; - break; - case DYTC_MODE_MMC_PERFORM: - *profile = PLATFORM_PROFILE_PERFORMANCE; - break; - default: /* Unknown mode */ - return -EINVAL; - } - return 0; - case DYTC_FUNCTION_PSC: - if (dytcmode == platform_psc_profile_lowpower) - *profile = PLATFORM_PROFILE_LOW_POWER; - else if (dytcmode == platform_psc_profile_balanced) - *profile = PLATFORM_PROFILE_BALANCED; - else if (dytcmode == platform_psc_profile_performance) - *profile = PLATFORM_PROFILE_PERFORMANCE; - else - return -EINVAL; - - return 0; - case DYTC_FUNCTION_AMT: - /* For now return balanced. It's the closest we have to 'auto' */ - *profile = PLATFORM_PROFILE_BALANCED; - return 0; - default: - /* Unknown function */ - pr_debug("unknown function 0x%x\n", funcmode); - return -EOPNOTSUPP; - } - return 0; -} - -static int convert_profile_to_dytc(enum platform_profile_option profile, int *perfmode) -{ - switch (profile) { - case PLATFORM_PROFILE_LOW_POWER: - if (dytc_capabilities & BIT(DYTC_FC_MMC)) - *perfmode = DYTC_MODE_MMC_LOWPOWER; - else if (dytc_capabilities & BIT(DYTC_FC_PSC)) - *perfmode = platform_psc_profile_lowpower; - break; - case PLATFORM_PROFILE_BALANCED: - if (dytc_capabilities & BIT(DYTC_FC_MMC)) - *perfmode = DYTC_MODE_MMC_BALANCE; - else if (dytc_capabilities & BIT(DYTC_FC_PSC)) - *perfmode = platform_psc_profile_balanced; - break; - case PLATFORM_PROFILE_PERFORMANCE: - if (dytc_capabilities & BIT(DYTC_FC_MMC)) - *perfmode = DYTC_MODE_MMC_PERFORM; - else if (dytc_capabilities & BIT(DYTC_FC_PSC)) - *perfmode = platform_psc_profile_performance; - break; - default: /* Unknown profile */ - return -EOPNOTSUPP; - } - return 0; -} - -/* - * dytc_profile_get: Function to register with platform_profile - * handler. Returns current platform profile. - */ -static int dytc_profile_get(struct device *dev, - enum platform_profile_option *profile) -{ - *profile = dytc_current_profile; - return 0; -} - -static int dytc_control_amt(bool enable) -{ - int dummy; - int err; - int cmd; - - if (!(dytc_capabilities & BIT(DYTC_FC_AMT))) { - pr_warn("Attempting to toggle AMT on a system that doesn't advertise support\n"); - return -ENODEV; - } - - if (enable) - cmd = DYTC_SET_COMMAND(DYTC_FUNCTION_AMT, DYTC_MODE_AMT_ENABLE, enable); - else - cmd = DYTC_SET_COMMAND(DYTC_FUNCTION_AMT, DYTC_MODE_AMT_DISABLE, enable); - - pr_debug("%sabling AMT (cmd 0x%x)", enable ? "en":"dis", cmd); - err = dytc_command(cmd, &dummy); - if (err) - return err; - dytc_amt_active = enable; - return 0; -} - -/* - * Helper function - check if we are in CQL mode and if we are - * - disable CQL, - * - run the command - * - enable CQL - * If not in CQL mode, just run the command - */ -static int dytc_cql_command(int command, int *output) -{ - int err, cmd_err, dummy; - int cur_funcmode; - - /* Determine if we are in CQL mode. This alters the commands we do */ - err = dytc_command(DYTC_CMD_GET, output); - if (err) - return err; - - cur_funcmode = (*output >> DYTC_GET_FUNCTION_BIT) & 0xF; - /* Check if we're OK to return immediately */ - if ((command == DYTC_CMD_GET) && (cur_funcmode != DYTC_FUNCTION_CQL)) - return 0; - - if (cur_funcmode == DYTC_FUNCTION_CQL) { - atomic_inc(&dytc_ignore_event); - err = dytc_command(DYTC_DISABLE_CQL, &dummy); - if (err) - return err; - } - - cmd_err = dytc_command(command, output); - /* Check return condition after we've restored CQL state */ - - if (cur_funcmode == DYTC_FUNCTION_CQL) { - err = dytc_command(DYTC_ENABLE_CQL, &dummy); - if (err) - return err; - } - return cmd_err; -} - -/* - * dytc_profile_set: Function to register with platform_profile - * handler. Sets current platform profile. - */ -static int dytc_profile_set(struct device *dev, - enum platform_profile_option profile) -{ - int perfmode; - int output; - int err; - - err = mutex_lock_interruptible(&dytc_mutex); - if (err) - return err; - - err = convert_profile_to_dytc(profile, &perfmode); - if (err) - goto unlock; - - if (dytc_capabilities & BIT(DYTC_FC_MMC)) { - if (profile == PLATFORM_PROFILE_BALANCED) { - /* - * To get back to balanced mode we need to issue a reset command. - * Note we still need to disable CQL mode before hand and re-enable - * it afterwards, otherwise dytc_lapmode gets reset to 0 and stays - * stuck at 0 for aprox. 30 minutes. - */ - err = dytc_cql_command(DYTC_CMD_RESET, &output); - if (err) - goto unlock; - } else { - /* Determine if we are in CQL mode. This alters the commands we do */ - err = dytc_cql_command(DYTC_SET_COMMAND(DYTC_FUNCTION_MMC, perfmode, 1), - &output); - if (err) - goto unlock; - } - } else if (dytc_capabilities & BIT(DYTC_FC_PSC)) { - err = dytc_command(DYTC_SET_COMMAND(DYTC_FUNCTION_PSC, perfmode, 1), &output); - if (err) - goto unlock; - - /* system supports AMT, activate it when on balanced */ - if (dytc_capabilities & BIT(DYTC_FC_AMT)) - dytc_control_amt(profile == PLATFORM_PROFILE_BALANCED); - } - /* Success - update current profile */ - dytc_current_profile = profile; -unlock: - mutex_unlock(&dytc_mutex); - return err; -} - -static int dytc_profile_probe(void *drvdata, unsigned long *choices) -{ - set_bit(PLATFORM_PROFILE_LOW_POWER, choices); - set_bit(PLATFORM_PROFILE_BALANCED, choices); - set_bit(PLATFORM_PROFILE_PERFORMANCE, choices); - - return 0; -} - -static const struct platform_profile_ops dytc_profile_ops = { - .probe = dytc_profile_probe, - .profile_get = dytc_profile_get, - .profile_set = dytc_profile_set, -}; - -static void dytc_profile_refresh(void) -{ - enum platform_profile_option profile; - int output = 0, err = 0; - int perfmode, funcmode = 0; - - mutex_lock(&dytc_mutex); - if (dytc_capabilities & BIT(DYTC_FC_MMC)) { - if (dytc_mmc_get_available) - err = dytc_command(DYTC_CMD_MMC_GET, &output); - else - err = dytc_cql_command(DYTC_CMD_GET, &output); - funcmode = DYTC_FUNCTION_MMC; - } else if (dytc_capabilities & BIT(DYTC_FC_PSC)) { - err = dytc_command(DYTC_CMD_GET, &output); - /* Check if we are PSC mode, or have AMT enabled */ - funcmode = (output >> DYTC_GET_FUNCTION_BIT) & 0xF; - } else { /* Unknown profile mode */ - err = -ENODEV; - } - mutex_unlock(&dytc_mutex); - if (err) - return; - - perfmode = (output >> DYTC_GET_MODE_BIT) & 0xF; - err = convert_dytc_to_profile(funcmode, perfmode, &profile); - if (!err && profile != dytc_current_profile) { - dytc_current_profile = profile; - platform_profile_notify(tpacpi_pprof); - } -} - -static int tpacpi_dytc_profile_init(struct ibm_init_struct *iibm) -{ - int err, output; - - err = dytc_command(DYTC_CMD_QUERY, &output); - if (err) - return err; - - if (output & BIT(DYTC_QUERY_ENABLE_BIT)) - dytc_version = (output >> DYTC_QUERY_REV_BIT) & 0xF; - - dbg_printk(TPACPI_DBG_INIT, "DYTC version %d\n", dytc_version); - /* Check DYTC is enabled and supports mode setting */ - if (dytc_version < 5) - return -ENODEV; - - /* Check what capabilities are supported */ - err = dytc_command(DYTC_CMD_FUNC_CAP, &dytc_capabilities); - if (err) - return err; - - /* Check if user wants to override the profile selection */ - if (profile_force) { - switch (profile_force) { - case -1: - dytc_capabilities = 0; - break; - case 1: - dytc_capabilities = BIT(DYTC_FC_MMC); - break; - case 2: - dytc_capabilities = BIT(DYTC_FC_PSC); - break; - } - pr_debug("Profile selection forced: 0x%x\n", dytc_capabilities); - } - if (dytc_capabilities & BIT(DYTC_FC_MMC)) { /* MMC MODE */ - pr_debug("MMC is supported\n"); - /* - * Check if MMC_GET functionality available - * Version > 6 and return success from MMC_GET command - */ - dytc_mmc_get_available = false; - if (dytc_version >= 6) { - err = dytc_command(DYTC_CMD_MMC_GET, &output); - if (!err && ((output & DYTC_ERR_MASK) == DYTC_ERR_SUCCESS)) - dytc_mmc_get_available = true; - } - } else if (dytc_capabilities & BIT(DYTC_FC_PSC)) { /* PSC MODE */ - pr_debug("PSC is supported\n"); - if (dytc_version >= 9) { /* update profiles for DYTC 9 and up */ - platform_psc_profile_lowpower = DYTC_MODE_PSCV9_LOWPOWER; - platform_psc_profile_balanced = DYTC_MODE_PSCV9_BALANCE; - platform_psc_profile_performance = DYTC_MODE_PSCV9_PERFORM; - } - } else { - dbg_printk(TPACPI_DBG_INIT, "No DYTC support available\n"); - return -ENODEV; - } - - dbg_printk(TPACPI_DBG_INIT, - "DYTC version %d: thermal mode available\n", dytc_version); - - /* Create platform_profile structure and register */ - tpacpi_pprof = platform_profile_register(&tpacpi_pdev->dev, "thinkpad-acpi-profile", - NULL, &dytc_profile_ops); - /* - * If for some reason platform_profiles aren't enabled - * don't quit terminally. - */ - if (IS_ERR(tpacpi_pprof)) - return -ENODEV; - - /* Ensure initial values are correct */ - dytc_profile_refresh(); - - /* Workaround for https://bugzilla.kernel.org/show_bug.cgi?id=216347 */ - if (dytc_capabilities & BIT(DYTC_FC_PSC)) - dytc_profile_set(NULL, PLATFORM_PROFILE_BALANCED); - - return 0; -} - -static void dytc_profile_exit(void) -{ - if (!IS_ERR_OR_NULL(tpacpi_pprof)) - platform_profile_remove(tpacpi_pprof); -} - -static struct ibm_struct dytc_profile_driver_data = { - .name = "dytc-profile", - .exit = dytc_profile_exit, -}; - -/************************************************************************* - * Keyboard language interface - */ - -struct keyboard_lang_data { - const char *lang_str; - int lang_code; -}; - -static const struct keyboard_lang_data keyboard_lang_data[] = { - {"be", 0x080c}, - {"cz", 0x0405}, - {"da", 0x0406}, - {"de", 0x0c07}, - {"en", 0x0000}, - {"es", 0x2c0a}, - {"et", 0x0425}, - {"fr", 0x040c}, - {"fr-ch", 0x100c}, - {"hu", 0x040e}, - {"it", 0x0410}, - {"jp", 0x0411}, - {"nl", 0x0413}, - {"nn", 0x0414}, - {"pl", 0x0415}, - {"pt", 0x0816}, - {"sl", 0x041b}, - {"sv", 0x081d}, - {"tr", 0x041f}, -}; - -static int set_keyboard_lang_command(int command) -{ - acpi_handle sskl_handle; - int output; - - if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "SSKL", &sskl_handle))) { - /* Platform doesn't support SSKL */ - return -ENODEV; - } - - if (!acpi_evalf(sskl_handle, &output, NULL, "dd", command)) - return -EIO; - - return 0; -} - -static int get_keyboard_lang(int *output) -{ - acpi_handle gskl_handle; - int kbd_lang; - - if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GSKL", &gskl_handle))) { - /* Platform doesn't support GSKL */ - return -ENODEV; - } - - if (!acpi_evalf(gskl_handle, &kbd_lang, NULL, "dd", 0x02000000)) - return -EIO; - - /* - * METHOD_ERR gets returned on devices where there are no special (e.g. '=', - * '(' and ')') keys which use layout dependent key-press emulation. - */ - if (kbd_lang & METHOD_ERR) - return -ENODEV; - - *output = kbd_lang; - - return 0; -} - -/* sysfs keyboard language entry */ -static ssize_t keyboard_lang_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - int output, err, i, len = 0; - - err = get_keyboard_lang(&output); - if (err) - return err; - - for (i = 0; i < ARRAY_SIZE(keyboard_lang_data); i++) { - if (i) - len += sysfs_emit_at(buf, len, "%s", " "); - - if (output == keyboard_lang_data[i].lang_code) { - len += sysfs_emit_at(buf, len, "[%s]", keyboard_lang_data[i].lang_str); - } else { - len += sysfs_emit_at(buf, len, "%s", keyboard_lang_data[i].lang_str); - } - } - len += sysfs_emit_at(buf, len, "\n"); - - return len; -} - -static ssize_t keyboard_lang_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - int err, i; - bool lang_found = false; - int lang_code = 0; - - for (i = 0; i < ARRAY_SIZE(keyboard_lang_data); i++) { - if (sysfs_streq(buf, keyboard_lang_data[i].lang_str)) { - lang_code = keyboard_lang_data[i].lang_code; - lang_found = true; - break; - } - } - - if (lang_found) { - lang_code = lang_code | 1 << 24; - - /* Set language code */ - err = set_keyboard_lang_command(lang_code); - if (err) - return err; - } else { - dev_err(&tpacpi_pdev->dev, "Unknown Keyboard language. Ignoring\n"); - return -EINVAL; - } - - tpacpi_disclose_usertask(attr->attr.name, - "keyboard language is set to %s\n", buf); - - sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "keyboard_lang"); - - return count; -} -static DEVICE_ATTR_RW(keyboard_lang); - -static struct attribute *kbdlang_attributes[] = { - &dev_attr_keyboard_lang.attr, - NULL -}; - -static umode_t kbdlang_attr_is_visible(struct kobject *kobj, - struct attribute *attr, int n) -{ - return tp_features.kbd_lang ? attr->mode : 0; -} - -static const struct attribute_group kbdlang_attr_group = { - .is_visible = kbdlang_attr_is_visible, - .attrs = kbdlang_attributes, -}; - -static int tpacpi_kbdlang_init(struct ibm_init_struct *iibm) -{ - int err, output; - - err = get_keyboard_lang(&output); - tp_features.kbd_lang = !err; - return err; -} - -static struct ibm_struct kbdlang_driver_data = { - .name = "kbdlang", -}; - -/************************************************************************* - * DPRC(Dynamic Power Reduction Control) subdriver, for the Lenovo WWAN - * and WLAN feature. - */ -#define DPRC_GET_WWAN_ANTENNA_TYPE 0x40000 -#define DPRC_WWAN_ANTENNA_TYPE_A_BIT BIT(4) -#define DPRC_WWAN_ANTENNA_TYPE_B_BIT BIT(8) -static bool has_antennatype; -static int wwan_antennatype; - -static int dprc_command(int command, int *output) -{ - acpi_handle dprc_handle; - - if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "DPRC", &dprc_handle))) { - /* Platform doesn't support DPRC */ - return -ENODEV; - } - - if (!acpi_evalf(dprc_handle, output, NULL, "dd", command)) - return -EIO; - - /* - * METHOD_ERR gets returned on devices where few commands are not supported - * for example command to get WWAN Antenna type command is not supported on - * some devices. - */ - if (*output & METHOD_ERR) - return -ENODEV; - - return 0; -} - -static int get_wwan_antenna(int *wwan_antennatype) -{ - int output, err; - - /* Get current Antenna type */ - err = dprc_command(DPRC_GET_WWAN_ANTENNA_TYPE, &output); - if (err) - return err; - - if (output & DPRC_WWAN_ANTENNA_TYPE_A_BIT) - *wwan_antennatype = 1; - else if (output & DPRC_WWAN_ANTENNA_TYPE_B_BIT) - *wwan_antennatype = 2; - else - return -ENODEV; - - return 0; -} - -/* sysfs wwan antenna type entry */ -static ssize_t wwan_antenna_type_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - switch (wwan_antennatype) { - case 1: - return sysfs_emit(buf, "type a\n"); - case 2: - return sysfs_emit(buf, "type b\n"); - default: - return -ENODATA; - } -} -static DEVICE_ATTR_RO(wwan_antenna_type); - -static struct attribute *dprc_attributes[] = { - &dev_attr_wwan_antenna_type.attr, - NULL -}; - -static umode_t dprc_attr_is_visible(struct kobject *kobj, - struct attribute *attr, int n) -{ - return has_antennatype ? attr->mode : 0; -} - -static const struct attribute_group dprc_attr_group = { - .is_visible = dprc_attr_is_visible, - .attrs = dprc_attributes, -}; - -static int tpacpi_dprc_init(struct ibm_init_struct *iibm) -{ - int err; - - err = get_wwan_antenna(&wwan_antennatype); - if (err) - return err; - - has_antennatype = true; - return 0; -} - -static struct ibm_struct dprc_driver_data = { - .name = "dprc", -}; - -/* - * Auxmac - * - * This auxiliary mac address is enabled in the bios through the - * MAC Address Pass-through feature. In most cases, there are three - * possibilities: Internal Mac, Second Mac, and disabled. - * - */ - -#define AUXMAC_LEN 12 -#define AUXMAC_START 9 -#define AUXMAC_STRLEN 22 -#define AUXMAC_BEGIN_MARKER 8 -#define AUXMAC_END_MARKER 21 - -static char auxmac[AUXMAC_LEN + 1]; - -static int auxmac_init(struct ibm_init_struct *iibm) -{ - acpi_status status; - struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; - union acpi_object *obj; - - status = acpi_evaluate_object(NULL, "\\MACA", NULL, &buffer); - - if (ACPI_FAILURE(status)) - return -ENODEV; - - obj = buffer.pointer; - - if (obj->type != ACPI_TYPE_STRING || obj->string.length != AUXMAC_STRLEN) { - pr_info("Invalid buffer for MAC address pass-through.\n"); - goto auxmacinvalid; - } - - if (obj->string.pointer[AUXMAC_BEGIN_MARKER] != '#' || - obj->string.pointer[AUXMAC_END_MARKER] != '#') { - pr_info("Invalid header for MAC address pass-through.\n"); - goto auxmacinvalid; - } - - if (strncmp(obj->string.pointer + AUXMAC_START, "XXXXXXXXXXXX", AUXMAC_LEN) != 0) - strscpy(auxmac, obj->string.pointer + AUXMAC_START, sizeof(auxmac)); - else - strscpy(auxmac, "disabled", sizeof(auxmac)); - -free: - kfree(obj); - return 0; - -auxmacinvalid: - strscpy(auxmac, "unavailable", sizeof(auxmac)); - goto free; -} - -static struct ibm_struct auxmac_data = { - .name = "auxmac", -}; - -static DEVICE_STRING_ATTR_RO(auxmac, 0444, auxmac); - -static umode_t auxmac_attr_is_visible(struct kobject *kobj, - struct attribute *attr, int n) -{ - return auxmac[0] == 0 ? 0 : attr->mode; -} - -static struct attribute *auxmac_attributes[] = { - &dev_attr_auxmac.attr.attr, - NULL -}; - -static const struct attribute_group auxmac_attr_group = { - .is_visible = auxmac_attr_is_visible, - .attrs = auxmac_attributes, -}; - -/* --------------------------------------------------------------------- */ - -static struct attribute *tpacpi_driver_attributes[] = { - &driver_attr_debug_level.attr, - &driver_attr_version.attr, - &driver_attr_interface_version.attr, -#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES - &driver_attr_wlsw_emulstate.attr, - &driver_attr_bluetooth_emulstate.attr, - &driver_attr_wwan_emulstate.attr, - &driver_attr_uwb_emulstate.attr, -#endif - NULL -}; - -#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES -static umode_t tpacpi_attr_is_visible(struct kobject *kobj, - struct attribute *attr, int n) -{ - if (attr == &driver_attr_wlsw_emulstate.attr) { - if (!dbg_wlswemul) - return 0; - } else if (attr == &driver_attr_bluetooth_emulstate.attr) { - if (!dbg_bluetoothemul) - return 0; - } else if (attr == &driver_attr_wwan_emulstate.attr) { - if (!dbg_wwanemul) - return 0; - } else if (attr == &driver_attr_uwb_emulstate.attr) { - if (!dbg_uwbemul) - return 0; - } - - return attr->mode; -} -#endif - -static const struct attribute_group tpacpi_driver_attr_group = { -#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES - .is_visible = tpacpi_attr_is_visible, -#endif - .attrs = tpacpi_driver_attributes, -}; - -static const struct attribute_group *tpacpi_driver_groups[] = { - &tpacpi_driver_attr_group, - NULL, -}; - -static const struct attribute_group *tpacpi_groups[] = { - &adaptive_kbd_attr_group, - &hotkey_attr_group, - &bluetooth_attr_group, - &wan_attr_group, - &cmos_attr_group, - &proxsensor_attr_group, - &kbdlang_attr_group, - &dprc_attr_group, - &auxmac_attr_group, - NULL, -}; - -static const struct attribute_group *tpacpi_hwmon_groups[] = { - &thermal_attr_group, - &temp_label_attr_group, - &fan_attr_group, - NULL, -}; - -static const struct attribute_group *tpacpi_hwmon_driver_groups[] = { - &fan_driver_attr_group, - NULL, -}; - -/**************************************************************************** - **************************************************************************** - * - * Platform drivers - * - **************************************************************************** - ****************************************************************************/ - -static struct platform_driver tpacpi_pdriver = { - .driver = { - .name = TPACPI_DRVR_NAME, - .pm = &tpacpi_pm, - .groups = tpacpi_driver_groups, - .dev_groups = tpacpi_groups, - }, - .shutdown = tpacpi_shutdown_handler, -}; - -static struct platform_driver tpacpi_hwmon_pdriver = { - .driver = { - .name = TPACPI_HWMON_DRVR_NAME, - .groups = tpacpi_hwmon_driver_groups, - }, -}; - -/**************************************************************************** - **************************************************************************** - * - * Infrastructure - * - **************************************************************************** - ****************************************************************************/ - -/* - * HKEY event callout for other subdrivers go here - * (yes, it is ugly, but it is quick, safe, and gets the job done - */ -static bool tpacpi_driver_event(const unsigned int hkey_event) -{ - int camera_shutter_state; - - switch (hkey_event) { - case TP_HKEY_EV_BRGHT_UP: - case TP_HKEY_EV_BRGHT_DOWN: - if (ibm_backlight_device) - tpacpi_brightness_notify_change(); - /* - * Key press events are suppressed by default hotkey_user_mask - * and should still be reported if explicitly requested. - */ - return false; - case TP_HKEY_EV_VOL_UP: - case TP_HKEY_EV_VOL_DOWN: - case TP_HKEY_EV_VOL_MUTE: - if (alsa_card) - volume_alsa_notify_change(); - - /* Key events are suppressed by default hotkey_user_mask */ - return false; - case TP_HKEY_EV_KBD_LIGHT: - if (tp_features.kbdlight) { - enum led_brightness brightness; - - mutex_lock(&kbdlight_mutex); - - /* - * Check the brightness actually changed, setting the brightness - * through kbdlight_set_level() also triggers this event. - */ - brightness = kbdlight_sysfs_get(NULL); - if (kbdlight_brightness != brightness) { - kbdlight_brightness = brightness; - led_classdev_notify_brightness_hw_changed( - &tpacpi_led_kbdlight.led_classdev, brightness); - } - - mutex_unlock(&kbdlight_mutex); - } - /* Key events are suppressed by default hotkey_user_mask */ - return false; - case TP_HKEY_EV_DFR_CHANGE_ROW: - adaptive_keyboard_change_row(); - return true; - case TP_HKEY_EV_DFR_S_QUICKVIEW_ROW: - adaptive_keyboard_s_quickview_row(); - return true; - case TP_HKEY_EV_THM_CSM_COMPLETED: - lapsensor_refresh(); - /* If we are already accessing DYTC then skip dytc update */ - if (!atomic_add_unless(&dytc_ignore_event, -1, 0)) - dytc_profile_refresh(); - - return true; - case TP_HKEY_EV_PRIVACYGUARD_TOGGLE: - if (lcdshadow_dev) { - enum drm_privacy_screen_status old_hw_state; - bool changed; - - mutex_lock(&lcdshadow_dev->lock); - old_hw_state = lcdshadow_dev->hw_state; - lcdshadow_get_hw_state(lcdshadow_dev); - changed = lcdshadow_dev->hw_state != old_hw_state; - mutex_unlock(&lcdshadow_dev->lock); - - if (changed) - drm_privacy_screen_call_notifier_chain(lcdshadow_dev); - } - return true; - case TP_HKEY_EV_AMT_TOGGLE: - /* If we're enabling AMT we need to force balanced mode */ - if (!dytc_amt_active) - /* This will also set AMT mode enabled */ - dytc_profile_set(NULL, PLATFORM_PROFILE_BALANCED); - else - dytc_control_amt(!dytc_amt_active); - - return true; - case TP_HKEY_EV_CAMERASHUTTER_TOGGLE: - camera_shutter_state = get_camera_shutter(); - if (camera_shutter_state < 0) { - pr_err("Error retrieving camera shutter state after shutter event\n"); - return true; - } - mutex_lock(&tpacpi_inputdev_send_mutex); - - input_report_switch(tpacpi_inputdev, SW_CAMERA_LENS_COVER, camera_shutter_state); - input_sync(tpacpi_inputdev); - - mutex_unlock(&tpacpi_inputdev_send_mutex); - return true; - case TP_HKEY_EV_DOUBLETAP_TOGGLE: - tp_features.trackpoint_doubletap = !tp_features.trackpoint_doubletap; - return true; - case TP_HKEY_EV_PROFILE_TOGGLE: - case TP_HKEY_EV_PROFILE_TOGGLE2: - platform_profile_cycle(); - return true; - } - - return false; -} - -/* --------------------------------------------------------------------- */ - -/* /proc support */ -static struct proc_dir_entry *proc_dir; - -/* - * Module and infrastructure proble, init and exit handling - */ - -static bool force_load; - -#ifdef CONFIG_THINKPAD_ACPI_DEBUG -static const char * __init str_supported(int is_supported) -{ - static char text_unsupported[] __initdata = "not supported"; - - return (is_supported) ? &text_unsupported[4] : &text_unsupported[0]; -} -#endif /* CONFIG_THINKPAD_ACPI_DEBUG */ - -static void ibm_exit(struct ibm_struct *ibm) -{ - dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name); - - list_del_init(&ibm->all_drivers); - - if (ibm->flags.acpi_notify_installed) { - dbg_printk(TPACPI_DBG_EXIT, - "%s: acpi_remove_notify_handler\n", ibm->name); - BUG_ON(!ibm->acpi); - acpi_remove_notify_handler(*ibm->acpi->handle, - ibm->acpi->type, - dispatch_acpi_notify); - ibm->flags.acpi_notify_installed = 0; - } - - if (ibm->flags.proc_created) { - dbg_printk(TPACPI_DBG_EXIT, - "%s: remove_proc_entry\n", ibm->name); - remove_proc_entry(ibm->name, proc_dir); - ibm->flags.proc_created = 0; - } - - if (ibm->flags.acpi_driver_registered) { - dbg_printk(TPACPI_DBG_EXIT, - "%s: acpi_bus_unregister_driver\n", ibm->name); - BUG_ON(!ibm->acpi); - acpi_bus_unregister_driver(ibm->acpi->driver); - kfree(ibm->acpi->driver); - ibm->acpi->driver = NULL; - ibm->flags.acpi_driver_registered = 0; - } - - if (ibm->flags.init_called && ibm->exit) { - ibm->exit(); - ibm->flags.init_called = 0; - } - - dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name); -} - -static int __init ibm_init(struct ibm_init_struct *iibm) -{ - int ret; - struct ibm_struct *ibm = iibm->data; - struct proc_dir_entry *entry; - - BUG_ON(ibm == NULL); - - INIT_LIST_HEAD(&ibm->all_drivers); - - if (ibm->flags.experimental && !experimental) - return 0; - - dbg_printk(TPACPI_DBG_INIT, - "probing for %s\n", ibm->name); - - if (iibm->init) { - ret = iibm->init(iibm); - if (ret > 0 || ret == -ENODEV) - return 0; /* subdriver functionality not available */ - if (ret) - return ret; - - ibm->flags.init_called = 1; - } - - if (ibm->acpi) { - if (ibm->acpi->hid) { - ret = register_tpacpi_subdriver(ibm); - if (ret) - goto err_out; - } - - if (ibm->acpi->notify) { - ret = setup_acpi_notify(ibm); - if (ret == -ENODEV) { - pr_notice("disabling subdriver %s\n", - ibm->name); - ret = 0; - goto err_out; - } - if (ret < 0) - goto err_out; - } - } - - dbg_printk(TPACPI_DBG_INIT, - "%s installed\n", ibm->name); - - if (ibm->read) { - umode_t mode = iibm->base_procfs_mode; - - if (!mode) - mode = S_IRUGO; - if (ibm->write) - mode |= S_IWUSR; - entry = proc_create_data(ibm->name, mode, proc_dir, - &dispatch_proc_ops, ibm); - if (!entry) { - pr_err("unable to create proc entry %s\n", ibm->name); - ret = -ENODEV; - goto err_out; - } - ibm->flags.proc_created = 1; - } - - list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers); - - return 0; - -err_out: - dbg_printk(TPACPI_DBG_INIT, - "%s: at error exit path with result %d\n", - ibm->name, ret); - - ibm_exit(ibm); - return (ret < 0) ? ret : 0; -} - -/* Probing */ - -static char __init tpacpi_parse_fw_id(const char * const s, - u32 *model, u16 *release) -{ - int i; - - if (!s || strlen(s) < 8) - goto invalid; - - for (i = 0; i < 8; i++) - if (!((s[i] >= '0' && s[i] <= '9') || - (s[i] >= 'A' && s[i] <= 'Z'))) - goto invalid; - - /* - * Most models: xxyTkkWW (#.##c) - * Ancient 570/600 and -SL lacks (#.##c) - */ - if (s[3] == 'T' || s[3] == 'N') { - *model = TPID(s[0], s[1]); - *release = TPVER(s[4], s[5]); - return s[2]; - - /* New models: xxxyTkkW (#.##c); T550 and some others */ - } else if (s[4] == 'T' || s[4] == 'N') { - *model = TPID3(s[0], s[1], s[2]); - *release = TPVER(s[5], s[6]); - return s[3]; - } - -invalid: - return '\0'; -} - -#define EC_FW_STRING_LEN 18 - -static void find_new_ec_fwstr(const struct dmi_header *dm, void *private) -{ - char *ec_fw_string = (char *) private; - const char *dmi_data = (const char *)dm; - /* - * ThinkPad Embedded Controller Program Table on newer models - * - * Offset | Name | Width | Description - * ---------------------------------------------------- - * 0x00 | Type | BYTE | 0x8C - * 0x01 | Length | BYTE | - * 0x02 | Handle | WORD | Varies - * 0x04 | Signature | BYTEx6 | ASCII for "LENOVO" - * 0x0A | OEM struct offset | BYTE | 0x0B - * 0x0B | OEM struct number | BYTE | 0x07, for this structure - * 0x0C | OEM struct revision | BYTE | 0x01, for this format - * 0x0D | ECP version ID | STR ID | - * 0x0E | ECP release date | STR ID | - */ - - /* Return if data structure not match */ - if (dm->type != 140 || dm->length < 0x0F || - memcmp(dmi_data + 4, "LENOVO", 6) != 0 || - dmi_data[0x0A] != 0x0B || dmi_data[0x0B] != 0x07 || - dmi_data[0x0C] != 0x01) - return; - - /* fwstr is the first 8byte string */ - BUILD_BUG_ON(EC_FW_STRING_LEN <= 8); - memcpy(ec_fw_string, dmi_data + 0x0F, 8); -} - -/* returns 0 - probe ok, or < 0 - probe error. - * Probe ok doesn't mean thinkpad found. - * On error, kfree() cleanup on tp->* is not performed, caller must do it */ -static int __must_check __init get_thinkpad_model_data( - struct thinkpad_id_data *tp) -{ - const struct dmi_device *dev = NULL; - char ec_fw_string[EC_FW_STRING_LEN] = {0}; - char const *s; - char t; - - if (!tp) - return -EINVAL; - - memset(tp, 0, sizeof(*tp)); - - if (dmi_name_in_vendors("IBM")) - tp->vendor = PCI_VENDOR_ID_IBM; - else if (dmi_name_in_vendors("LENOVO")) - tp->vendor = PCI_VENDOR_ID_LENOVO; - else if (dmi_name_in_vendors("NEC")) - tp->vendor = PCI_VENDOR_ID_LENOVO; - else - return 0; - - s = dmi_get_system_info(DMI_BIOS_VERSION); - tp->bios_version_str = kstrdup(s, GFP_KERNEL); - if (s && !tp->bios_version_str) - return -ENOMEM; - - /* Really ancient ThinkPad 240X will fail this, which is fine */ - t = tpacpi_parse_fw_id(tp->bios_version_str, - &tp->bios_model, &tp->bios_release); - if (t != 'E' && t != 'C') - return 0; - - /* - * ThinkPad T23 or newer, A31 or newer, R50e or newer, - * X32 or newer, all Z series; Some models must have an - * up-to-date BIOS or they will not be detected. - * - * See https://thinkwiki.org/wiki/List_of_DMI_IDs - */ - while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) { - if (sscanf(dev->name, - "IBM ThinkPad Embedded Controller -[%17c", - ec_fw_string) == 1) { - ec_fw_string[sizeof(ec_fw_string) - 1] = 0; - ec_fw_string[strcspn(ec_fw_string, " ]")] = 0; - break; - } - } - - /* Newer ThinkPads have different EC program info table */ - if (!ec_fw_string[0]) - dmi_walk(find_new_ec_fwstr, &ec_fw_string); - - if (ec_fw_string[0]) { - tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL); - if (!tp->ec_version_str) - return -ENOMEM; - - t = tpacpi_parse_fw_id(ec_fw_string, - &tp->ec_model, &tp->ec_release); - if (t != 'H') { - pr_notice("ThinkPad firmware release %s doesn't match the known patterns\n", - ec_fw_string); - pr_notice("please report this to %s\n", TPACPI_MAIL); - } - } - - s = dmi_get_system_info(DMI_PRODUCT_VERSION); - if (s && !(strncasecmp(s, "ThinkPad", 8) && strncasecmp(s, "Lenovo", 6))) { - tp->model_str = kstrdup(s, GFP_KERNEL); - if (!tp->model_str) - return -ENOMEM; - } else { - s = dmi_get_system_info(DMI_BIOS_VENDOR); - if (s && !(strncasecmp(s, "Lenovo", 6))) { - tp->model_str = kstrdup(s, GFP_KERNEL); - if (!tp->model_str) - return -ENOMEM; - } - } - - s = dmi_get_system_info(DMI_PRODUCT_NAME); - tp->nummodel_str = kstrdup(s, GFP_KERNEL); - if (s && !tp->nummodel_str) - return -ENOMEM; - - return 0; -} - -static int __init probe_for_thinkpad(void) -{ - int is_thinkpad; - - if (acpi_disabled) - return -ENODEV; - - /* It would be dangerous to run the driver in this case */ - if (!tpacpi_is_ibm() && !tpacpi_is_lenovo()) - return -ENODEV; - - /* - * Non-ancient models have better DMI tagging, but very old models - * don't. tpacpi_is_fw_known() is a cheat to help in that case. - */ - is_thinkpad = (thinkpad_id.model_str != NULL) || - (thinkpad_id.ec_model != 0) || - tpacpi_is_fw_known(); - - /* The EC handler is required */ - tpacpi_acpi_handle_locate("ec", TPACPI_ACPI_EC_HID, &ec_handle); - if (!ec_handle) { - if (is_thinkpad) - pr_err("Not yet supported ThinkPad detected!\n"); - return -ENODEV; - } - - if (!is_thinkpad && !force_load) - return -ENODEV; - - return 0; -} - -static void __init thinkpad_acpi_init_banner(void) -{ - pr_info("%s v%s\n", TPACPI_DESC, TPACPI_VERSION); - pr_info("%s\n", TPACPI_URL); - - pr_info("ThinkPad BIOS %s, EC %s\n", - (thinkpad_id.bios_version_str) ? - thinkpad_id.bios_version_str : "unknown", - (thinkpad_id.ec_version_str) ? - thinkpad_id.ec_version_str : "unknown"); - - BUG_ON(!thinkpad_id.vendor); - - if (thinkpad_id.model_str) - pr_info("%s %s, model %s\n", - (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ? - "IBM" : ((thinkpad_id.vendor == - PCI_VENDOR_ID_LENOVO) ? - "Lenovo" : "Unknown vendor"), - thinkpad_id.model_str, - (thinkpad_id.nummodel_str) ? - thinkpad_id.nummodel_str : "unknown"); -} - -/* Module init, exit, parameters */ - -static struct ibm_init_struct ibms_init[] __initdata = { - { - .data = &thinkpad_acpi_driver_data, - }, - { - .init = hotkey_init, - .data = &hotkey_driver_data, - }, - { - .init = bluetooth_init, - .data = &bluetooth_driver_data, - }, - { - .init = wan_init, - .data = &wan_driver_data, - }, - { - .init = uwb_init, - .data = &uwb_driver_data, - }, -#ifdef CONFIG_THINKPAD_ACPI_VIDEO - { - .init = video_init, - .base_procfs_mode = S_IRUSR, - .data = &video_driver_data, - }, -#endif - { - .init = kbdlight_init, - .data = &kbdlight_driver_data, - }, - { - .init = light_init, - .data = &light_driver_data, - }, - { - .init = cmos_init, - .data = &cmos_driver_data, - }, - { - .init = led_init, - .data = &led_driver_data, - }, - { - .init = beep_init, - .data = &beep_driver_data, - }, - { - .init = thermal_init, - .data = &thermal_driver_data, - }, - { - .init = brightness_init, - .data = &brightness_driver_data, - }, - { - .init = volume_init, - .data = &volume_driver_data, - }, - { - .init = fan_init, - .data = &fan_driver_data, - }, - { - .init = mute_led_init, - .data = &mute_led_driver_data, - }, - { - .init = tpacpi_battery_init, - .data = &battery_driver_data, - }, - { - .init = tpacpi_lcdshadow_init, - .data = &lcdshadow_driver_data, - }, - { - .init = tpacpi_proxsensor_init, - .data = &proxsensor_driver_data, - }, - { - .init = tpacpi_dytc_profile_init, - .data = &dytc_profile_driver_data, - }, - { - .init = tpacpi_kbdlang_init, - .data = &kbdlang_driver_data, - }, - { - .init = tpacpi_dprc_init, - .data = &dprc_driver_data, - }, - { - .init = auxmac_init, - .data = &auxmac_data, - }, -}; - -static int __init set_ibm_param(const char *val, const struct kernel_param *kp) -{ - unsigned int i; - struct ibm_struct *ibm; - - if (!kp || !kp->name || !val) - return -EINVAL; - - for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { - ibm = ibms_init[i].data; - if (!ibm || !ibm->name) - continue; - - if (strcmp(ibm->name, kp->name) == 0 && ibm->write) { - if (strlen(val) > sizeof(ibms_init[i].param) - 1) - return -ENOSPC; - strscpy(ibms_init[i].param, val); - return 0; - } - } - - return -EINVAL; -} - -module_param(experimental, int, 0444); -MODULE_PARM_DESC(experimental, - "Enables experimental features when non-zero"); - -module_param_named(debug, dbg_level, uint, 0); -MODULE_PARM_DESC(debug, "Sets debug level bit-mask"); - -module_param(force_load, bool, 0444); -MODULE_PARM_DESC(force_load, - "Attempts to load the driver even on a mis-identified ThinkPad when true"); - -module_param_named(fan_control, fan_control_allowed, bool, 0444); -MODULE_PARM_DESC(fan_control, - "Enables setting fan parameters features when true"); - -module_param_named(brightness_mode, brightness_mode, uint, 0444); -MODULE_PARM_DESC(brightness_mode, - "Selects brightness control strategy: 0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM"); - -module_param(brightness_enable, uint, 0444); -MODULE_PARM_DESC(brightness_enable, - "Enables backlight control when 1, disables when 0"); - -#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT -module_param_named(volume_mode, volume_mode, uint, 0444); -MODULE_PARM_DESC(volume_mode, - "Selects volume control strategy: 0=auto, 1=EC, 2=N/A, 3=EC+NVRAM"); - -module_param_named(volume_capabilities, volume_capabilities, uint, 0444); -MODULE_PARM_DESC(volume_capabilities, - "Selects the mixer capabilities: 0=auto, 1=volume and mute, 2=mute only"); - -module_param_named(volume_control, volume_control_allowed, bool, 0444); -MODULE_PARM_DESC(volume_control, - "Enables software override for the console audio control when true"); - -module_param_named(software_mute, software_mute_requested, bool, 0444); -MODULE_PARM_DESC(software_mute, - "Request full software mute control"); - -/* ALSA module API parameters */ -module_param_named(index, alsa_index, int, 0444); -MODULE_PARM_DESC(index, "ALSA index for the ACPI EC Mixer"); -module_param_named(id, alsa_id, charp, 0444); -MODULE_PARM_DESC(id, "ALSA id for the ACPI EC Mixer"); -module_param_named(enable, alsa_enable, bool, 0444); -MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer"); -#endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ - -/* The module parameter can't be read back, that's why 0 is used here */ -#define TPACPI_PARAM(feature) \ - module_param_call(feature, set_ibm_param, NULL, NULL, 0); \ - MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command at module load, see documentation") - -TPACPI_PARAM(hotkey); -TPACPI_PARAM(bluetooth); -TPACPI_PARAM(video); -TPACPI_PARAM(light); -TPACPI_PARAM(cmos); -TPACPI_PARAM(led); -TPACPI_PARAM(beep); -TPACPI_PARAM(brightness); -TPACPI_PARAM(volume); -TPACPI_PARAM(fan); - -#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES -module_param(dbg_wlswemul, uint, 0444); -MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation"); -module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0); -MODULE_PARM_DESC(wlsw_state, - "Initial state of the emulated WLSW switch"); - -module_param(dbg_bluetoothemul, uint, 0444); -MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation"); -module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0); -MODULE_PARM_DESC(bluetooth_state, - "Initial state of the emulated bluetooth switch"); - -module_param(dbg_wwanemul, uint, 0444); -MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation"); -module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0); -MODULE_PARM_DESC(wwan_state, - "Initial state of the emulated WWAN switch"); - -module_param(dbg_uwbemul, uint, 0444); -MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation"); -module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0); -MODULE_PARM_DESC(uwb_state, - "Initial state of the emulated UWB switch"); -#endif - -module_param(profile_force, int, 0444); -MODULE_PARM_DESC(profile_force, "Force profile mode. -1=off, 1=MMC, 2=PSC"); - -static void thinkpad_acpi_module_exit(void) -{ - tpacpi_lifecycle = TPACPI_LIFE_EXITING; - - if (tpacpi_sensors_pdev) { - platform_driver_unregister(&tpacpi_hwmon_pdriver); - platform_device_unregister(tpacpi_sensors_pdev); - } - - if (tp_features.platform_drv_registered) - platform_driver_unregister(&tpacpi_pdriver); - if (tpacpi_pdev) - platform_device_unregister(tpacpi_pdev); - - if (proc_dir) - remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir); - if (tpacpi_wq) - destroy_workqueue(tpacpi_wq); - - kfree(thinkpad_id.bios_version_str); - kfree(thinkpad_id.ec_version_str); - kfree(thinkpad_id.model_str); - kfree(thinkpad_id.nummodel_str); -} - -static void tpacpi_subdrivers_release(void *data) -{ - struct ibm_struct *ibm, *itmp; - - list_for_each_entry_safe_reverse(ibm, itmp, &tpacpi_all_drivers, all_drivers) - ibm_exit(ibm); - - dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n"); -} - -static int __init tpacpi_pdriver_probe(struct platform_device *pdev) -{ - int ret; - - ret = devm_mutex_init(&pdev->dev, &tpacpi_inputdev_send_mutex); - if (ret) - return ret; - - tpacpi_inputdev = devm_input_allocate_device(&pdev->dev); - if (!tpacpi_inputdev) - return -ENOMEM; - - tpacpi_inputdev->name = "ThinkPad Extra Buttons"; - tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0"; - tpacpi_inputdev->id.bustype = BUS_HOST; - tpacpi_inputdev->id.vendor = thinkpad_id.vendor; - tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT; - tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION; - tpacpi_inputdev->dev.parent = &tpacpi_pdev->dev; - - /* Init subdriver dependencies */ - tpacpi_detect_brightness_capabilities(); - - /* Init subdrivers */ - for (unsigned int i = 0; i < ARRAY_SIZE(ibms_init); i++) { - ret = ibm_init(&ibms_init[i]); - if (ret >= 0 && *ibms_init[i].param) - ret = ibms_init[i].data->write(ibms_init[i].param); - if (ret < 0) { - tpacpi_subdrivers_release(NULL); - return ret; - } - } - - ret = devm_add_action_or_reset(&pdev->dev, tpacpi_subdrivers_release, NULL); - if (ret) - return ret; - - ret = input_register_device(tpacpi_inputdev); - if (ret < 0) - pr_err("unable to register input device\n"); - - return ret; -} - -static int __init tpacpi_hwmon_pdriver_probe(struct platform_device *pdev) -{ - tpacpi_hwmon = devm_hwmon_device_register_with_groups(&pdev->dev, TPACPI_NAME, - NULL, tpacpi_hwmon_groups); - if (IS_ERR(tpacpi_hwmon)) - pr_err("unable to register hwmon device\n"); - - return PTR_ERR_OR_ZERO(tpacpi_hwmon); -} - -static int __init thinkpad_acpi_module_init(void) -{ - const struct dmi_system_id *dmi_id; - int ret; - acpi_object_type obj_type; - - tpacpi_lifecycle = TPACPI_LIFE_INIT; - - /* Driver-level probe */ - - ret = get_thinkpad_model_data(&thinkpad_id); - if (ret) { - pr_err("unable to get DMI data: %d\n", ret); - thinkpad_acpi_module_exit(); - return ret; - } - ret = probe_for_thinkpad(); - if (ret) { - thinkpad_acpi_module_exit(); - return ret; - } - - /* Driver initialization */ - - thinkpad_acpi_init_banner(); - tpacpi_check_outdated_fw(); - - TPACPI_ACPIHANDLE_INIT(ecrd); - TPACPI_ACPIHANDLE_INIT(ecwr); - - /* - * Quirk: in some models (e.g. X380 Yoga), an object named ECRD - * exists, but it is a register, not a method. - */ - if (ecrd_handle) { - acpi_get_type(ecrd_handle, &obj_type); - if (obj_type != ACPI_TYPE_METHOD) - ecrd_handle = NULL; - } - if (ecwr_handle) { - acpi_get_type(ecwr_handle, &obj_type); - if (obj_type != ACPI_TYPE_METHOD) - ecwr_handle = NULL; - } - - tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME); - if (!tpacpi_wq) { - thinkpad_acpi_module_exit(); - return -ENOMEM; - } - - proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir); - if (!proc_dir) { - pr_err("unable to create proc dir " TPACPI_PROC_DIR "\n"); - thinkpad_acpi_module_exit(); - return -ENODEV; - } - - dmi_id = dmi_first_match(fwbug_list); - if (dmi_id) - tp_features.quirks = dmi_id->driver_data; - - /* Device initialization */ - tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, PLATFORM_DEVID_NONE, - NULL, 0); - if (IS_ERR(tpacpi_pdev)) { - ret = PTR_ERR(tpacpi_pdev); - tpacpi_pdev = NULL; - pr_err("unable to register platform device\n"); - thinkpad_acpi_module_exit(); - return ret; - } - - ret = platform_driver_probe(&tpacpi_pdriver, tpacpi_pdriver_probe); - if (ret) { - pr_err("unable to register main platform driver\n"); - thinkpad_acpi_module_exit(); - return ret; - } - tp_features.platform_drv_registered = 1; - - tpacpi_sensors_pdev = platform_create_bundle(&tpacpi_hwmon_pdriver, - tpacpi_hwmon_pdriver_probe, - NULL, 0, NULL, 0); - if (IS_ERR(tpacpi_sensors_pdev)) { - ret = PTR_ERR(tpacpi_sensors_pdev); - tpacpi_sensors_pdev = NULL; - pr_err("unable to register hwmon platform device/driver bundle\n"); - thinkpad_acpi_module_exit(); - return ret; - } - - tpacpi_lifecycle = TPACPI_LIFE_RUNNING; - - return 0; -} - -MODULE_ALIAS(TPACPI_DRVR_SHORTNAME); - -/* - * This will autoload the driver in almost every ThinkPad - * in widespread use. - * - * Only _VERY_ old models, like the 240, 240x and 570 lack - * the HKEY event interface. - */ -MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids); - -/* - * DMI matching for module autoloading - * - * See https://thinkwiki.org/wiki/List_of_DMI_IDs - * See https://thinkwiki.org/wiki/BIOS_Upgrade_Downloads - * - * Only models listed in thinkwiki will be supported, so add yours - * if it is not there yet. - */ -#define IBM_BIOS_MODULE_ALIAS(__type) \ - MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*") - -/* Ancient thinkpad BIOSes have to be identified by - * BIOS type or model number, and there are far less - * BIOS types than model numbers... */ -IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */ - -MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>"); -MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>"); -MODULE_DESCRIPTION(TPACPI_DESC); -MODULE_VERSION(TPACPI_VERSION); -MODULE_LICENSE("GPL"); - -module_init(thinkpad_acpi_module_init); -module_exit(thinkpad_acpi_module_exit); |