diff options
Diffstat (limited to 'drivers/platform/x86/lenovo-wmi-hotkey-utilities.c')
| -rw-r--r-- | drivers/platform/x86/lenovo-wmi-hotkey-utilities.c | 212 |
1 files changed, 0 insertions, 212 deletions
diff --git a/drivers/platform/x86/lenovo-wmi-hotkey-utilities.c b/drivers/platform/x86/lenovo-wmi-hotkey-utilities.c deleted file mode 100644 index 89153afd7015..000000000000 --- a/drivers/platform/x86/lenovo-wmi-hotkey-utilities.c +++ /dev/null @@ -1,212 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Lenovo Super Hotkey Utility WMI extras driver for Ideapad laptop - * - * Copyright (C) 2025 Lenovo - */ - -#include <linux/cleanup.h> -#include <linux/dev_printk.h> -#include <linux/device.h> -#include <linux/leds.h> -#include <linux/module.h> -#include <linux/wmi.h> - -/* Lenovo Super Hotkey WMI GUIDs */ -#define LUD_WMI_METHOD_GUID "CE6C0974-0407-4F50-88BA-4FC3B6559AD8" - -/* Lenovo Utility Data WMI method_id */ -#define WMI_LUD_GET_SUPPORT 1 -#define WMI_LUD_SET_FEATURE 2 - -#define WMI_LUD_GET_MICMUTE_LED_VER 20 -#define WMI_LUD_GET_AUDIOMUTE_LED_VER 26 - -#define WMI_LUD_SUPPORT_MICMUTE_LED_VER 25 -#define WMI_LUD_SUPPORT_AUDIOMUTE_LED_VER 27 - -/* Input parameters to mute/unmute audio LED and Mic LED */ -struct wmi_led_args { - u8 id; - u8 subid; - u16 value; -}; - -/* Values of input parameters to SetFeature of audio LED and Mic LED */ -enum hotkey_set_feature { - MIC_MUTE_LED_ON = 1, - MIC_MUTE_LED_OFF = 2, - AUDIO_MUTE_LED_ON = 4, - AUDIO_MUTE_LED_OFF = 5, -}; - -#define LSH_ACPI_LED_MAX 2 - -struct lenovo_super_hotkey_wmi_private { - struct led_classdev cdev[LSH_ACPI_LED_MAX]; - struct wmi_device *led_wdev; -}; - -enum mute_led_type { - MIC_MUTE, - AUDIO_MUTE, -}; - -static int lsh_wmi_mute_led_set(enum mute_led_type led_type, struct led_classdev *led_cdev, - enum led_brightness brightness) - -{ - struct lenovo_super_hotkey_wmi_private *wpriv = container_of(led_cdev, - struct lenovo_super_hotkey_wmi_private, cdev[led_type]); - struct wmi_led_args led_arg = {0, 0, 0}; - struct acpi_buffer input; - acpi_status status; - - switch (led_type) { - case MIC_MUTE: - led_arg.id = brightness == LED_ON ? MIC_MUTE_LED_ON : MIC_MUTE_LED_OFF; - break; - case AUDIO_MUTE: - led_arg.id = brightness == LED_ON ? AUDIO_MUTE_LED_ON : AUDIO_MUTE_LED_OFF; - break; - default: - return -EINVAL; - } - - input.length = sizeof(led_arg); - input.pointer = &led_arg; - status = wmidev_evaluate_method(wpriv->led_wdev, 0, WMI_LUD_SET_FEATURE, &input, NULL); - if (ACPI_FAILURE(status)) - return -EIO; - - return 0; -} - -static int lsh_wmi_audiomute_led_set(struct led_classdev *led_cdev, - enum led_brightness brightness) - -{ - return lsh_wmi_mute_led_set(AUDIO_MUTE, led_cdev, brightness); -} - -static int lsh_wmi_micmute_led_set(struct led_classdev *led_cdev, - enum led_brightness brightness) -{ - return lsh_wmi_mute_led_set(MIC_MUTE, led_cdev, brightness); -} - -static int lenovo_super_hotkey_wmi_led_init(enum mute_led_type led_type, struct device *dev) -{ - struct lenovo_super_hotkey_wmi_private *wpriv = dev_get_drvdata(dev); - struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; - struct acpi_buffer input; - int led_version, err = 0; - unsigned int wmiarg; - acpi_status status; - - switch (led_type) { - case MIC_MUTE: - wmiarg = WMI_LUD_GET_MICMUTE_LED_VER; - break; - case AUDIO_MUTE: - wmiarg = WMI_LUD_GET_AUDIOMUTE_LED_VER; - break; - default: - return -EINVAL; - } - - input.length = sizeof(wmiarg); - input.pointer = &wmiarg; - status = wmidev_evaluate_method(wpriv->led_wdev, 0, WMI_LUD_GET_SUPPORT, &input, &output); - if (ACPI_FAILURE(status)) - return -EIO; - - union acpi_object *obj __free(kfree) = output.pointer; - if (obj && obj->type == ACPI_TYPE_INTEGER) - led_version = obj->integer.value; - else - return -EIO; - - wpriv->cdev[led_type].max_brightness = LED_ON; - wpriv->cdev[led_type].flags = LED_CORE_SUSPENDRESUME; - - switch (led_type) { - case MIC_MUTE: - if (led_version != WMI_LUD_SUPPORT_MICMUTE_LED_VER) - return -EIO; - - wpriv->cdev[led_type].name = "platform::micmute"; - wpriv->cdev[led_type].brightness_set_blocking = &lsh_wmi_micmute_led_set; - wpriv->cdev[led_type].default_trigger = "audio-micmute"; - break; - case AUDIO_MUTE: - if (led_version != WMI_LUD_SUPPORT_AUDIOMUTE_LED_VER) - return -EIO; - - wpriv->cdev[led_type].name = "platform::mute"; - wpriv->cdev[led_type].brightness_set_blocking = &lsh_wmi_audiomute_led_set; - wpriv->cdev[led_type].default_trigger = "audio-mute"; - break; - default: - dev_err(dev, "Unknown LED type %d\n", led_type); - return -EINVAL; - } - - err = devm_led_classdev_register(dev, &wpriv->cdev[led_type]); - if (err < 0) { - dev_err(dev, "Could not register mute LED %d : %d\n", led_type, err); - return err; - } - return 0; -} - -static int lenovo_super_hotkey_wmi_leds_setup(struct device *dev) -{ - int err; - - err = lenovo_super_hotkey_wmi_led_init(MIC_MUTE, dev); - if (err) - return err; - - err = lenovo_super_hotkey_wmi_led_init(AUDIO_MUTE, dev); - if (err) - return err; - - return 0; -} - -static int lenovo_super_hotkey_wmi_probe(struct wmi_device *wdev, const void *context) -{ - struct lenovo_super_hotkey_wmi_private *wpriv; - - wpriv = devm_kzalloc(&wdev->dev, sizeof(*wpriv), GFP_KERNEL); - if (!wpriv) - return -ENOMEM; - - dev_set_drvdata(&wdev->dev, wpriv); - wpriv->led_wdev = wdev; - return lenovo_super_hotkey_wmi_leds_setup(&wdev->dev); -} - -static const struct wmi_device_id lenovo_super_hotkey_wmi_id_table[] = { - { LUD_WMI_METHOD_GUID, NULL }, /* Utility data */ - { } -}; - -MODULE_DEVICE_TABLE(wmi, lenovo_super_hotkey_wmi_id_table); - -static struct wmi_driver lenovo_wmi_hotkey_utilities_driver = { - .driver = { - .name = "lenovo_wmi_hotkey_utilities", - .probe_type = PROBE_PREFER_ASYNCHRONOUS - }, - .id_table = lenovo_super_hotkey_wmi_id_table, - .probe = lenovo_super_hotkey_wmi_probe, - .no_singleton = true, -}; - -module_wmi_driver(lenovo_wmi_hotkey_utilities_driver); - -MODULE_AUTHOR("Jackie Dong <dongeg1@lenovo.com>"); -MODULE_DESCRIPTION("Lenovo Super Hotkey Utility WMI extras driver"); -MODULE_LICENSE("GPL"); |