diff options
Diffstat (limited to 'drivers/platform/x86/dell-wmi.c')
| -rw-r--r-- | drivers/platform/x86/dell-wmi.c | 317 |
1 files changed, 0 insertions, 317 deletions
diff --git a/drivers/platform/x86/dell-wmi.c b/drivers/platform/x86/dell-wmi.c deleted file mode 100644 index fa9a2171cc13..000000000000 --- a/drivers/platform/x86/dell-wmi.c +++ /dev/null @@ -1,317 +0,0 @@ -/* - * Dell WMI hotkeys - * - * Copyright (C) 2008 Red Hat <mjg@redhat.com> - * - * Portions based on wistron_btns.c: - * Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz> - * Copyright (C) 2005 Bernhard Rosenkraenzer <bero@arklinux.org> - * Copyright (C) 2005 Dmitry Torokhov <dtor@mail.ru> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/init.h> -#include <linux/slab.h> -#include <linux/types.h> -#include <linux/input.h> -#include <linux/input/sparse-keymap.h> -#include <acpi/acpi_drivers.h> -#include <linux/acpi.h> -#include <linux/string.h> -#include <linux/dmi.h> - -MODULE_AUTHOR("Matthew Garrett <mjg@redhat.com>"); -MODULE_DESCRIPTION("Dell laptop WMI hotkeys driver"); -MODULE_LICENSE("GPL"); - -#define DELL_EVENT_GUID "9DBB5994-A997-11DA-B012-B622A1EF5492" - -static int acpi_video; - -MODULE_ALIAS("wmi:"DELL_EVENT_GUID); - -/* - * Certain keys are flagged as KE_IGNORE. All of these are either - * notifications (rather than requests for change) or are also sent - * via the keyboard controller so should not be sent again. - */ - -static const struct key_entry dell_wmi_legacy_keymap[] __initconst = { - { KE_IGNORE, 0x003a, { KEY_CAPSLOCK } }, - - { KE_KEY, 0xe045, { KEY_PROG1 } }, - { KE_KEY, 0xe009, { KEY_EJECTCD } }, - - /* These also contain the brightness level at offset 6 */ - { KE_KEY, 0xe006, { KEY_BRIGHTNESSUP } }, - { KE_KEY, 0xe005, { KEY_BRIGHTNESSDOWN } }, - - /* Battery health status button */ - { KE_KEY, 0xe007, { KEY_BATTERY } }, - - /* This is actually for all radios. Although physically a - * switch, the notification does not provide an indication of - * state and so it should be reported as a key */ - { KE_KEY, 0xe008, { KEY_WLAN } }, - - /* The next device is at offset 6, the active devices are at - offset 8 and the attached devices at offset 10 */ - { KE_KEY, 0xe00b, { KEY_SWITCHVIDEOMODE } }, - - { KE_IGNORE, 0xe00c, { KEY_KBDILLUMTOGGLE } }, - - /* BIOS error detected */ - { KE_IGNORE, 0xe00d, { KEY_RESERVED } }, - - /* Wifi Catcher */ - { KE_KEY, 0xe011, {KEY_PROG2 } }, - - /* Ambient light sensor toggle */ - { KE_IGNORE, 0xe013, { KEY_RESERVED } }, - - { KE_IGNORE, 0xe020, { KEY_MUTE } }, - - /* Shortcut and audio panel keys */ - { KE_IGNORE, 0xe025, { KEY_RESERVED } }, - { KE_IGNORE, 0xe026, { KEY_RESERVED } }, - - { KE_IGNORE, 0xe02e, { KEY_VOLUMEDOWN } }, - { KE_IGNORE, 0xe030, { KEY_VOLUMEUP } }, - { KE_IGNORE, 0xe033, { KEY_KBDILLUMUP } }, - { KE_IGNORE, 0xe034, { KEY_KBDILLUMDOWN } }, - { KE_IGNORE, 0xe03a, { KEY_CAPSLOCK } }, - { KE_IGNORE, 0xe045, { KEY_NUMLOCK } }, - { KE_IGNORE, 0xe046, { KEY_SCROLLLOCK } }, - { KE_IGNORE, 0xe0f7, { KEY_MUTE } }, - { KE_IGNORE, 0xe0f8, { KEY_VOLUMEDOWN } }, - { KE_IGNORE, 0xe0f9, { KEY_VOLUMEUP } }, - { KE_END, 0 } -}; - -static bool dell_new_hk_type; - -struct dell_bios_keymap_entry { - u16 scancode; - u16 keycode; -}; - -struct dell_bios_hotkey_table { - struct dmi_header header; - struct dell_bios_keymap_entry keymap[]; - -}; - -static const struct dell_bios_hotkey_table *dell_bios_hotkey_table; - -static const u16 bios_to_linux_keycode[256] __initconst = { - - KEY_MEDIA, KEY_NEXTSONG, KEY_PLAYPAUSE, KEY_PREVIOUSSONG, - KEY_STOPCD, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, - KEY_WWW, KEY_UNKNOWN, KEY_VOLUMEDOWN, KEY_MUTE, - KEY_VOLUMEUP, KEY_UNKNOWN, KEY_BATTERY, KEY_EJECTCD, - KEY_UNKNOWN, KEY_SLEEP, KEY_PROG1, KEY_BRIGHTNESSDOWN, - KEY_BRIGHTNESSUP, KEY_UNKNOWN, KEY_KBDILLUMTOGGLE, - KEY_UNKNOWN, KEY_SWITCHVIDEOMODE, KEY_UNKNOWN, KEY_UNKNOWN, - KEY_SWITCHVIDEOMODE, KEY_UNKNOWN, KEY_UNKNOWN, KEY_PROG2, - KEY_UNKNOWN, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - KEY_PROG3 -}; - -static struct input_dev *dell_wmi_input_dev; - -static void dell_wmi_notify(u32 value, void *context) -{ - struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL }; - union acpi_object *obj; - acpi_status status; - - status = wmi_get_event_data(value, &response); - if (status != AE_OK) { - pr_info("bad event status 0x%x\n", status); - return; - } - - obj = (union acpi_object *)response.pointer; - - if (obj && obj->type == ACPI_TYPE_BUFFER) { - const struct key_entry *key; - int reported_key; - u16 *buffer_entry = (u16 *)obj->buffer.pointer; - - if (dell_new_hk_type && (buffer_entry[1] != 0x10)) { - pr_info("Received unknown WMI event (0x%x)\n", - buffer_entry[1]); - kfree(obj); - return; - } - - if (dell_new_hk_type || buffer_entry[1] == 0x0) - reported_key = (int)buffer_entry[2]; - else - reported_key = (int)buffer_entry[1] & 0xffff; - - key = sparse_keymap_entry_from_scancode(dell_wmi_input_dev, - reported_key); - if (!key) { - pr_info("Unknown key %x pressed\n", reported_key); - } else if ((key->keycode == KEY_BRIGHTNESSUP || - key->keycode == KEY_BRIGHTNESSDOWN) && acpi_video) { - /* Don't report brightness notifications that will also - * come via ACPI */ - ; - } else { - sparse_keymap_report_entry(dell_wmi_input_dev, key, - 1, true); - } - } - kfree(obj); -} - -static const struct key_entry * __init dell_wmi_prepare_new_keymap(void) -{ - int hotkey_num = (dell_bios_hotkey_table->header.length - 4) / - sizeof(struct dell_bios_keymap_entry); - struct key_entry *keymap; - int i; - - keymap = kcalloc(hotkey_num + 1, sizeof(struct key_entry), GFP_KERNEL); - if (!keymap) - return NULL; - - for (i = 0; i < hotkey_num; i++) { - const struct dell_bios_keymap_entry *bios_entry = - &dell_bios_hotkey_table->keymap[i]; - keymap[i].type = KE_KEY; - keymap[i].code = bios_entry->scancode; - keymap[i].keycode = bios_entry->keycode < 256 ? - bios_to_linux_keycode[bios_entry->keycode] : - KEY_RESERVED; - } - - keymap[hotkey_num].type = KE_END; - - return keymap; -} - -static int __init dell_wmi_input_setup(void) -{ - int err; - - dell_wmi_input_dev = input_allocate_device(); - if (!dell_wmi_input_dev) - return -ENOMEM; - - dell_wmi_input_dev->name = "Dell WMI hotkeys"; - dell_wmi_input_dev->phys = "wmi/input0"; - dell_wmi_input_dev->id.bustype = BUS_HOST; - - if (dell_new_hk_type) { - const struct key_entry *keymap = dell_wmi_prepare_new_keymap(); - if (!keymap) { - err = -ENOMEM; - goto err_free_dev; - } - - err = sparse_keymap_setup(dell_wmi_input_dev, keymap, NULL); - - /* - * Sparse keymap library makes a copy of keymap so we - * don't need the original one that was allocated. - */ - kfree(keymap); - } else { - err = sparse_keymap_setup(dell_wmi_input_dev, - dell_wmi_legacy_keymap, NULL); - } - if (err) - goto err_free_dev; - - err = input_register_device(dell_wmi_input_dev); - if (err) - goto err_free_keymap; - - return 0; - - err_free_keymap: - sparse_keymap_free(dell_wmi_input_dev); - err_free_dev: - input_free_device(dell_wmi_input_dev); - return err; -} - -static void dell_wmi_input_destroy(void) -{ - sparse_keymap_free(dell_wmi_input_dev); - input_unregister_device(dell_wmi_input_dev); -} - -static void __init find_hk_type(const struct dmi_header *dm, void *dummy) -{ - if (dm->type == 0xb2 && dm->length > 6) { - dell_new_hk_type = true; - dell_bios_hotkey_table = - container_of(dm, struct dell_bios_hotkey_table, header); - } -} - -static int __init dell_wmi_init(void) -{ - int err; - acpi_status status; - - if (!wmi_has_guid(DELL_EVENT_GUID)) { - pr_warn("No known WMI GUID found\n"); - return -ENODEV; - } - - dmi_walk(find_hk_type, NULL); - acpi_video = acpi_video_backlight_support(); - - err = dell_wmi_input_setup(); - if (err) - return err; - - status = wmi_install_notify_handler(DELL_EVENT_GUID, - dell_wmi_notify, NULL); - if (ACPI_FAILURE(status)) { - dell_wmi_input_destroy(); - pr_err("Unable to register notify handler - %d\n", status); - return -ENODEV; - } - - return 0; -} -module_init(dell_wmi_init); - -static void __exit dell_wmi_exit(void) -{ - wmi_remove_notify_handler(DELL_EVENT_GUID); - dell_wmi_input_destroy(); -} -module_exit(dell_wmi_exit); |