From d00fa46e0a2c670d980af6e9e81b41ae3f9f02b5 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Mon, 26 Nov 2018 17:47:45 +0100 Subject: platform/x86: dell-laptop: Add micmute LED trigger support MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch adds the LED trigger support for audio mic-mute control. As of this patch, the LED device isn't tied with the audio driver, and can be changed via user-space at "platform::micmute" sysfs entry. (This new prefix "platform" is the agreement among people for indicating the generic laptop / system-wide attribute.) The binding with HD-audio is still done via the existing exported dell_micmute_led_set(). It will be replaced with the LED trigger binding in later patches. Also this selects CONFIG_LEDS_TRIGGERS and CONFIG_LEDS_TRIGGERS_AUDIO unconditionally. Strictly speaking, these aren't 100% mandatory, but leaving these manual selections would lead to a functional regression easily once after converting from the dynamic symbol binding to the LEDs trigger in a later patch. Acked-by: Jacek Anaszewski Acked-by: Pavel Machek Acked-by: Andy Shevchenko Acked-by: Pali Rohár Signed-off-by: Takashi Iwai --- drivers/platform/x86/Kconfig | 2 ++ drivers/platform/x86/dell-laptop.c | 25 +++++++++++++++++++++++++ 2 files changed, 27 insertions(+) (limited to 'drivers/platform') diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig index 54f6a40c75c6..9b9cc3cc33e9 100644 --- a/drivers/platform/x86/Kconfig +++ b/drivers/platform/x86/Kconfig @@ -177,6 +177,8 @@ config DELL_LAPTOP select POWER_SUPPLY select LEDS_CLASS select NEW_LEDS + select LEDS_TRIGGERS + select LEDS_TRIGGER_AUDIO ---help--- This driver adds support for rfkill and backlight control to Dell laptops (except for some models covered by the Compal driver). diff --git a/drivers/platform/x86/dell-laptop.c b/drivers/platform/x86/dell-laptop.c index 06978c14c83b..0db2dbf7b0d1 100644 --- a/drivers/platform/x86/dell-laptop.c +++ b/drivers/platform/x86/dell-laptop.c @@ -2131,6 +2131,23 @@ int dell_micmute_led_set(int state) } EXPORT_SYMBOL_GPL(dell_micmute_led_set); +static int micmute_led_set(struct led_classdev *led_cdev, + enum led_brightness brightness) +{ + int state = brightness != LED_OFF; + int err; + + err = dell_micmute_led_set(state); + return err < 0 ? err : 0; +} + +static struct led_classdev micmute_led_cdev = { + .name = "platform::micmute", + .max_brightness = 1, + .brightness_set_blocking = micmute_led_set, + .default_trigger = "audio-micmute", +}; + static int __init dell_init(void) { struct calling_interface_token *token; @@ -2175,6 +2192,11 @@ static int __init dell_init(void) dell_laptop_register_notifier(&dell_laptop_notifier); + micmute_led_cdev.brightness = ledtrig_audio_get(LED_AUDIO_MICMUTE); + ret = led_classdev_register(&platform_device->dev, &micmute_led_cdev); + if (ret < 0) + goto fail_led; + if (acpi_video_get_backlight_type() != acpi_backlight_vendor) return 0; @@ -2220,6 +2242,8 @@ static int __init dell_init(void) fail_get_brightness: backlight_device_unregister(dell_backlight_device); fail_backlight: + led_classdev_unregister(&micmute_led_cdev); +fail_led: dell_cleanup_rfkill(); fail_rfkill: platform_device_del(platform_device); @@ -2239,6 +2263,7 @@ static void __exit dell_exit(void) touchpad_led_exit(); kbd_led_exit(); backlight_device_unregister(dell_backlight_device); + led_classdev_unregister(&micmute_led_cdev); dell_cleanup_rfkill(); if (platform_device) { platform_device_unregister(platform_device); -- cgit v1.2.3 From 4e1d092445a58b0a58d2743448a7aa17ae1cb0ef Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Mon, 26 Nov 2018 17:47:45 +0100 Subject: platform/x86: thinkpad_acpi: Add audio mute LED classdev support MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit In the upcoming change, the binding of audio mute / mic-mute LED controls will be switched with LED trigger. This patch is the last piece of preparation: adding the audio mute / mic-mute LED class devices to thinkpad_acpi driver. Two devices, platform::mute and platform::micmute, will be added for controlling the mute LED and mic-mute LED, respectively. The new prefix "platform" is the suggestion by upstream for indicating the generic laptop attribute. Also this selects CONFIG_LEDS_TRIGGERS and CONFIG_LEDS_TRIGGERS_AUDIO unconditionally. Strictly speaking, these aren't 100% mandatory, but leaving these manual selections would lead to a functional regression easily once after converting from the dynamic symbol binding to the LEDs trigger in a later patch. Acked-by: Jacek Anaszewski Acked-by: Pavel Machek Acked-by: Andy Shevchenko Acked-by: Henrique de Moraes Holschuh Acked-by: Pali Rohár Signed-off-by: Takashi Iwai --- drivers/platform/x86/Kconfig | 2 ++ drivers/platform/x86/thinkpad_acpi.c | 57 ++++++++++++++++++++++++++++++++---- 2 files changed, 53 insertions(+), 6 deletions(-) (limited to 'drivers/platform') diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig index 9b9cc3cc33e9..87f70e8f4dd0 100644 --- a/drivers/platform/x86/Kconfig +++ b/drivers/platform/x86/Kconfig @@ -495,6 +495,8 @@ config THINKPAD_ACPI select NVRAM select NEW_LEDS select LEDS_CLASS + select LEDS_TRIGGERS + select LEDS_TRIGGER_AUDIO ---help--- This is a driver for the IBM and Lenovo ThinkPad laptops. It adds support for Fn-Fx key combinations, Bluetooth control, video diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c index fde08a997557..3d2c1f5f22e2 100644 --- a/drivers/platform/x86/thinkpad_acpi.c +++ b/drivers/platform/x86/thinkpad_acpi.c @@ -9203,17 +9203,58 @@ int tpacpi_led_set(int whichled, bool on) } EXPORT_SYMBOL_GPL(tpacpi_led_set); +static int tpacpi_led_mute_set(struct led_classdev *led_cdev, + enum led_brightness brightness) +{ + return tpacpi_led_set(TPACPI_LED_MUTE, brightness != LED_OFF); +} + +static int tpacpi_led_micmute_set(struct led_classdev *led_cdev, + enum led_brightness brightness) +{ + return tpacpi_led_set(TPACPI_LED_MICMUTE, brightness != LED_OFF); +} + +static struct led_classdev mute_led_cdev[] = { + [TPACPI_LED_MUTE] = { + .name = "platform::mute", + .max_brightness = 1, + .brightness_set_blocking = tpacpi_led_mute_set, + .default_trigger = "audio-mute", + }, + [TPACPI_LED_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) { + static enum led_audio types[] = { + [TPACPI_LED_MUTE] = LED_AUDIO_MUTE, + [TPACPI_LED_MICMUTE] = LED_AUDIO_MICMUTE, + }; acpi_handle temp; - int i; + int i, err; for (i = 0; i < TPACPI_LED_MAX; i++) { struct tp_led_table *t = &led_tables[i]; - if (ACPI_SUCCESS(acpi_get_handle(hkey_handle, t->name, &temp))) - mute_led_on_off(t, false); - else + if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) { t->state = -ENODEV; + continue; + } + + mute_led_cdev[i].brightness = ledtrig_audio_get(types[i]); + err = led_classdev_register(&tpacpi_pdev->dev, &mute_led_cdev[i]); + if (err < 0) { + while (i--) { + if (led_tables[i].state >= 0) + led_classdev_unregister(&mute_led_cdev[i]); + } + return err; + } } return 0; } @@ -9222,8 +9263,12 @@ static void mute_led_exit(void) { int i; - for (i = 0; i < TPACPI_LED_MAX; i++) - tpacpi_led_set(i, false); + for (i = 0; i < TPACPI_LED_MAX; i++) { + if (led_tables[i].state >= 0) { + led_classdev_unregister(&mute_led_cdev[i]); + tpacpi_led_set(i, false); + } + } } static void mute_led_resume(void) -- cgit v1.2.3 From f783e128a6f1484d72ceab06d483ea32df0ce333 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Mon, 26 Nov 2018 17:47:46 +0100 Subject: platform/x86: dell-laptop: Drop superfluous exported function MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Since we've switched to the LED trigger for binding with HD-audio, we can drop the exported function as well as the whole linux/dell-led.h. Acked-by: Jacek Anaszewski Acked-by: Pavel Machek Acked-by: Andy Shevchenko Acked-by: Pali Rohár Signed-off-by: Takashi Iwai --- drivers/platform/x86/dell-laptop.c | 22 +++++----------------- include/linux/dell-led.h | 7 ------- 2 files changed, 5 insertions(+), 24 deletions(-) delete mode 100644 include/linux/dell-led.h (limited to 'drivers/platform') diff --git a/drivers/platform/x86/dell-laptop.c b/drivers/platform/x86/dell-laptop.c index 0db2dbf7b0d1..fb071e6a5058 100644 --- a/drivers/platform/x86/dell-laptop.c +++ b/drivers/platform/x86/dell-laptop.c @@ -29,7 +29,6 @@ #include #include #include -#include #include #include #include "dell-rbtn.h" @@ -2109,17 +2108,17 @@ static struct notifier_block dell_laptop_notifier = { .notifier_call = dell_laptop_notifier_call, }; -int dell_micmute_led_set(int state) +static int micmute_led_set(struct led_classdev *led_cdev, + enum led_brightness brightness) { struct calling_interface_buffer buffer; struct calling_interface_token *token; + int state = brightness != LED_OFF; if (state == 0) token = dell_smbios_find_token(GLOBAL_MIC_MUTE_DISABLE); - else if (state == 1) - token = dell_smbios_find_token(GLOBAL_MIC_MUTE_ENABLE); else - return -EINVAL; + token = dell_smbios_find_token(GLOBAL_MIC_MUTE_ENABLE); if (!token) return -ENODEV; @@ -2127,18 +2126,7 @@ int dell_micmute_led_set(int state) dell_fill_request(&buffer, token->location, token->value, 0, 0); dell_send_request(&buffer, CLASS_TOKEN_WRITE, SELECT_TOKEN_STD); - return state; -} -EXPORT_SYMBOL_GPL(dell_micmute_led_set); - -static int micmute_led_set(struct led_classdev *led_cdev, - enum led_brightness brightness) -{ - int state = brightness != LED_OFF; - int err; - - err = dell_micmute_led_set(state); - return err < 0 ? err : 0; + return 0; } static struct led_classdev micmute_led_cdev = { diff --git a/include/linux/dell-led.h b/include/linux/dell-led.h deleted file mode 100644 index 92521471517f..000000000000 --- a/include/linux/dell-led.h +++ /dev/null @@ -1,7 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef __DELL_LED_H__ -#define __DELL_LED_H__ - -int dell_micmute_led_set(int on); - -#endif -- cgit v1.2.3 From 9e908a180e6a90fa102d5d3f96ca86825f43e4fb Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Mon, 26 Nov 2018 17:47:47 +0100 Subject: platform/x86: thinkpad_acpi: Drop superfluous exported function MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Since we've switched to the LED trigger for binding with HD-audio, we can drop the exported function as well as the whole linux/thinkpad_acpi.h. The own TPACPI_LED_MUTE and TPACPI_LED_MICMUTE definitions are replaced with the identical ones for LEDS, i.e. LED_AUDIO_MUTE and LED_AUDIO_MICMUTE, respectively. They are no longer needed as referred only locally. Acked-by: Jacek Anaszewski Acked-by: Pavel Machek Acked-by: Andy Shevchenko Acked-by: Henrique de Moraes Holschuh Acked-by: Pali Rohár Signed-off-by: Takashi Iwai --- drivers/platform/x86/thinkpad_acpi.c | 30 +++++++++++------------------- include/linux/thinkpad_acpi.h | 16 ---------------- 2 files changed, 11 insertions(+), 35 deletions(-) delete mode 100644 include/linux/thinkpad_acpi.h (limited to 'drivers/platform') diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c index 3d2c1f5f22e2..21ffb961585a 100644 --- a/drivers/platform/x86/thinkpad_acpi.c +++ b/drivers/platform/x86/thinkpad_acpi.c @@ -81,7 +81,6 @@ #include #include #include -#include #include #include #include @@ -9150,6 +9149,7 @@ static struct ibm_struct fan_driver_data = { * Mute LED subdriver */ +#define TPACPI_LED_MAX 2 struct tp_led_table { acpi_string name; @@ -9158,13 +9158,13 @@ struct tp_led_table { int state; }; -static struct tp_led_table led_tables[] = { - [TPACPI_LED_MUTE] = { +static struct tp_led_table led_tables[TPACPI_LED_MAX] = { + [LED_AUDIO_MUTE] = { .name = "SSMS", .on_value = 1, .off_value = 0, }, - [TPACPI_LED_MICMUTE] = { + [LED_AUDIO_MICMUTE] = { .name = "MMTS", .on_value = 2, .off_value = 0, @@ -9189,40 +9189,36 @@ static int mute_led_on_off(struct tp_led_table *t, bool state) return state; } -int tpacpi_led_set(int whichled, bool on) +static int tpacpi_led_set(int whichled, bool on) { struct tp_led_table *t; - if (whichled < 0 || whichled >= TPACPI_LED_MAX) - return -EINVAL; - t = &led_tables[whichled]; if (t->state < 0 || t->state == on) return t->state; return mute_led_on_off(t, on); } -EXPORT_SYMBOL_GPL(tpacpi_led_set); static int tpacpi_led_mute_set(struct led_classdev *led_cdev, enum led_brightness brightness) { - return tpacpi_led_set(TPACPI_LED_MUTE, brightness != LED_OFF); + 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(TPACPI_LED_MICMUTE, brightness != LED_OFF); + return tpacpi_led_set(LED_AUDIO_MICMUTE, brightness != LED_OFF); } -static struct led_classdev mute_led_cdev[] = { - [TPACPI_LED_MUTE] = { +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", }, - [TPACPI_LED_MICMUTE] = { + [LED_AUDIO_MICMUTE] = { .name = "platform::micmute", .max_brightness = 1, .brightness_set_blocking = tpacpi_led_micmute_set, @@ -9232,10 +9228,6 @@ static struct led_classdev mute_led_cdev[] = { static int mute_led_init(struct ibm_init_struct *iibm) { - static enum led_audio types[] = { - [TPACPI_LED_MUTE] = LED_AUDIO_MUTE, - [TPACPI_LED_MICMUTE] = LED_AUDIO_MICMUTE, - }; acpi_handle temp; int i, err; @@ -9246,7 +9238,7 @@ static int mute_led_init(struct ibm_init_struct *iibm) continue; } - mute_led_cdev[i].brightness = ledtrig_audio_get(types[i]); + mute_led_cdev[i].brightness = ledtrig_audio_get(i); err = led_classdev_register(&tpacpi_pdev->dev, &mute_led_cdev[i]); if (err < 0) { while (i--) { diff --git a/include/linux/thinkpad_acpi.h b/include/linux/thinkpad_acpi.h deleted file mode 100644 index 9fb317970c01..000000000000 --- a/include/linux/thinkpad_acpi.h +++ /dev/null @@ -1,16 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef __THINKPAD_ACPI_H__ -#define __THINKPAD_ACPI_H__ - -/* These two functions return 0 if success, or negative error code - (e g -ENODEV if no led present) */ - -enum { - TPACPI_LED_MUTE, - TPACPI_LED_MICMUTE, - TPACPI_LED_MAX, -}; - -int tpacpi_led_set(int whichled, bool on); - -#endif -- cgit v1.2.3 From bf4fb28c6e74495de9e1e4ad359cd2272ac12c53 Mon Sep 17 00:00:00 2001 From: Ayman Bagabas Date: Wed, 12 Dec 2018 18:07:58 -0500 Subject: platform/x86: add support for Huawei WMI hotkeys This driver adds support for missing hotkeys on some Huawei laptops. Laptops such as the Matebook X have non functioning hotkeys. Whereas newer laptops such as the Matebook X Pro come with working hotkeys out of the box. Old laptops, such as the Matebook X, report hotkey events through ACPI device "\WMI0". However, new laptops, such as the Matebook X Pro, does not have this WMI device. All the hotkeys on the Matebook X Pro work fine without this patch except (micmute, wlan, and huawei key). These keys and the brightness keys report events to "\AMW0" ACPI device. One problem is that brightness keys on the Matebook X Pro work without this patch. This results in reporting two brightness key press events one is captured by ACPI and another by this driver. A solution would be to check if such event came from the "\AMW0" WMI driver then skip reporting event. Another solution would be to leave this to user-space to handle. Which can be achieved by using "hwdb" tables and remap those keys to "unknown". This solution seems more natural to me because it leaves the decision to user-space. Acked-by: Andy Shevchenko Reviewed-by: Takashi Iwai Signed-off-by: Ayman Bagabas Signed-off-by: Takashi Iwai --- drivers/platform/x86/Kconfig | 17 ++++ drivers/platform/x86/Makefile | 1 + drivers/platform/x86/huawei-wmi.c | 208 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 226 insertions(+) create mode 100644 drivers/platform/x86/huawei-wmi.c (limited to 'drivers/platform') diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig index 87f70e8f4dd0..45ef4d22f14c 100644 --- a/drivers/platform/x86/Kconfig +++ b/drivers/platform/x86/Kconfig @@ -1292,6 +1292,23 @@ config INTEL_ATOMISP2_PM To compile this driver as a module, choose M here: the module will be called intel_atomisp2_pm. +config HUAWEI_WMI + tristate "Huawei WMI hotkeys driver" + depends on ACPI_WMI + depends on INPUT + select INPUT_SPARSEKMAP + select LEDS_CLASS + select LEDS_TRIGGERS + select LEDS_TRIGGER_AUDIO + select NEW_LEDS + help + This driver provides support for Huawei WMI hotkeys. + It enables the missing keys and adds support to the micmute + LED found on some of these laptops. + + To compile this driver as a module, choose M here: the module + will be called huawei-wmi. + endif # X86_PLATFORM_DEVICES config PMC_ATOM diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile index 39ae94135406..d841c550e3cc 100644 --- a/drivers/platform/x86/Makefile +++ b/drivers/platform/x86/Makefile @@ -32,6 +32,7 @@ obj-$(CONFIG_ACERHDF) += acerhdf.o obj-$(CONFIG_HP_ACCEL) += hp_accel.o obj-$(CONFIG_HP_WIRELESS) += hp-wireless.o obj-$(CONFIG_HP_WMI) += hp-wmi.o +obj-$(CONFIG_HUAWEI_WMI) += huawei-wmi.o obj-$(CONFIG_AMILO_RFKILL) += amilo-rfkill.o obj-$(CONFIG_GPD_POCKET_FAN) += gpd-pocket-fan.o obj-$(CONFIG_TC1100_WMI) += tc1100-wmi.o diff --git a/drivers/platform/x86/huawei-wmi.c b/drivers/platform/x86/huawei-wmi.c new file mode 100644 index 000000000000..59872f87b741 --- /dev/null +++ b/drivers/platform/x86/huawei-wmi.c @@ -0,0 +1,208 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Huawei WMI hotkeys + * + * Copyright (C) 2018 Ayman Bagabas + */ + +#include +#include +#include +#include +#include +#include + +/* + * Huawei WMI GUIDs + */ +#define WMI0_EVENT_GUID "59142400-C6A3-40fa-BADB-8A2652834100" +#define AMW0_EVENT_GUID "ABBC0F5C-8EA1-11D1-A000-C90629100000" + +#define WMI0_EXPENSIVE_GUID "39142400-C6A3-40fa-BADB-8A2652834100" + +struct huawei_wmi_priv { + struct input_dev *idev; + struct led_classdev cdev; + acpi_handle handle; + char *acpi_method; +}; + +static const struct key_entry huawei_wmi_keymap[] = { + { KE_KEY, 0x281, { KEY_BRIGHTNESSDOWN } }, + { KE_KEY, 0x282, { KEY_BRIGHTNESSUP } }, + { KE_KEY, 0x284, { KEY_MUTE } }, + { KE_KEY, 0x285, { KEY_VOLUMEDOWN } }, + { KE_KEY, 0x286, { KEY_VOLUMEUP } }, + { KE_KEY, 0x287, { KEY_MICMUTE } }, + { KE_KEY, 0x289, { KEY_WLAN } }, + // Huawei |M| key + { KE_KEY, 0x28a, { KEY_CONFIG } }, + // Keyboard backlight + { KE_IGNORE, 0x293, { KEY_KBDILLUMTOGGLE } }, + { KE_IGNORE, 0x294, { KEY_KBDILLUMUP } }, + { KE_IGNORE, 0x295, { KEY_KBDILLUMUP } }, + { KE_END, 0 } +}; + +static int huawei_wmi_micmute_led_set(struct led_classdev *led_cdev, + enum led_brightness brightness) +{ + struct huawei_wmi_priv *priv = dev_get_drvdata(led_cdev->dev->parent); + acpi_status status; + union acpi_object args[3]; + struct acpi_object_list arg_list = { + .pointer = args, + .count = ARRAY_SIZE(args), + }; + + args[0].type = args[1].type = args[2].type = ACPI_TYPE_INTEGER; + args[1].integer.value = 0x04; + + if (strcmp(priv->acpi_method, "SPIN") == 0) { + args[0].integer.value = 0; + args[2].integer.value = brightness ? 1 : 0; + } else if (strcmp(priv->acpi_method, "WPIN") == 0) { + args[0].integer.value = 1; + args[2].integer.value = brightness ? 0 : 1; + } else { + return -EINVAL; + } + + status = acpi_evaluate_object(priv->handle, priv->acpi_method, &arg_list, NULL); + if (ACPI_FAILURE(status)) + return -ENXIO; + + return 0; +} + +static int huawei_wmi_leds_setup(struct wmi_device *wdev) +{ + struct huawei_wmi_priv *priv = dev_get_drvdata(&wdev->dev); + + priv->handle = ec_get_handle(); + if (!priv->handle) + return 0; + + if (acpi_has_method(priv->handle, "SPIN")) + priv->acpi_method = "SPIN"; + else if (acpi_has_method(priv->handle, "WPIN")) + priv->acpi_method = "WPIN"; + else + return 0; + + priv->cdev.name = "platform::micmute"; + priv->cdev.max_brightness = 1; + priv->cdev.brightness_set_blocking = huawei_wmi_micmute_led_set; + priv->cdev.default_trigger = "audio-micmute"; + priv->cdev.brightness = ledtrig_audio_get(LED_AUDIO_MICMUTE); + priv->cdev.dev = &wdev->dev; + priv->cdev.flags = LED_CORE_SUSPENDRESUME; + + return devm_led_classdev_register(&wdev->dev, &priv->cdev); +} + +static void huawei_wmi_process_key(struct wmi_device *wdev, int code) +{ + struct huawei_wmi_priv *priv = dev_get_drvdata(&wdev->dev); + const struct key_entry *key; + + /* + * WMI0 uses code 0x80 to indicate a hotkey event. + * The actual key is fetched from the method WQ00 + * using WMI0_EXPENSIVE_GUID. + */ + if (code == 0x80) { + struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL }; + union acpi_object *obj; + acpi_status status; + + status = wmi_query_block(WMI0_EXPENSIVE_GUID, 0, &response); + if (ACPI_FAILURE(status)) + return; + + obj = (union acpi_object *)response.pointer; + if (obj && obj->type == ACPI_TYPE_INTEGER) + code = obj->integer.value; + + kfree(response.pointer); + } + + key = sparse_keymap_entry_from_scancode(priv->idev, code); + if (!key) { + dev_info(&wdev->dev, "Unknown key pressed, code: 0x%04x\n", code); + return; + } + + sparse_keymap_report_entry(priv->idev, key, 1, true); +} + +static void huawei_wmi_notify(struct wmi_device *wdev, + union acpi_object *obj) +{ + if (obj->type == ACPI_TYPE_INTEGER) + huawei_wmi_process_key(wdev, obj->integer.value); + else + dev_info(&wdev->dev, "Bad response type %d\n", obj->type); +} + +static int huawei_wmi_input_setup(struct wmi_device *wdev) +{ + struct huawei_wmi_priv *priv = dev_get_drvdata(&wdev->dev); + int err; + + priv->idev = devm_input_allocate_device(&wdev->dev); + if (!priv->idev) + return -ENOMEM; + + priv->idev->name = "Huawei WMI hotkeys"; + priv->idev->phys = "wmi/input0"; + priv->idev->id.bustype = BUS_HOST; + priv->idev->dev.parent = &wdev->dev; + + err = sparse_keymap_setup(priv->idev, huawei_wmi_keymap, NULL); + if (err) + return err; + + return input_register_device(priv->idev); +} + +static int huawei_wmi_probe(struct wmi_device *wdev) +{ + struct huawei_wmi_priv *priv; + int err; + + priv = devm_kzalloc(&wdev->dev, sizeof(struct huawei_wmi_priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + dev_set_drvdata(&wdev->dev, priv); + + err = huawei_wmi_input_setup(wdev); + if (err) + return err; + + return huawei_wmi_leds_setup(wdev); +} + +static const struct wmi_device_id huawei_wmi_id_table[] = { + { .guid_string = WMI0_EVENT_GUID }, + { .guid_string = AMW0_EVENT_GUID }, + { } +}; + +static struct wmi_driver huawei_wmi_driver = { + .driver = { + .name = "huawei-wmi", + }, + .id_table = huawei_wmi_id_table, + .probe = huawei_wmi_probe, + .notify = huawei_wmi_notify, +}; + +module_wmi_driver(huawei_wmi_driver); + +MODULE_ALIAS("wmi:"WMI0_EVENT_GUID); +MODULE_ALIAS("wmi:"AMW0_EVENT_GUID); +MODULE_AUTHOR("Ayman Bagabas "); +MODULE_DESCRIPTION("Huawei WMI hotkeys"); +MODULE_LICENSE("GPL v2"); -- cgit v1.2.3