From: PaddyKP_Yao <PaddyKP_Yao@asus.com>
Date: Mon, 11 Jul 2022 11:51:25 +0000 (+0800)
Subject: platform/x86: asus-wmi: Add mic-mute LED classdev support
X-Git-Tag: v6.0-rc1~120^2~21
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=b644c95598adfe2b968e97daee3a890dd2fda84d;p=tomoyo%2Ftomoyo-test1.git

platform/x86: asus-wmi: Add mic-mute LED classdev support

In some new ASUS devices, hotkey Fn+F13 is used for mic mute. If mic-mute
LED is present by checking WMI ASUS_WMI_DEVID_MICMUTE_LED, we will add a
mic-mute LED classdev, asus::micmute, in the asus-wmi driver to control
it. The binding of mic-mute LED controls will be swithched with LED
trigger.

Signed-off-by: PaddyKP_Yao <PaddyKP_Yao@asus.com>
Link: https://lore.kernel.org/r/20220711115125.2072508-1-PaddyKP_Yao@asus.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---

diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index 7fa88efeef4d..6a33c862452b 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -273,6 +273,8 @@ config ASUS_WMI
 	select INPUT_SPARSEKMAP
 	select LEDS_CLASS
 	select NEW_LEDS
+	select LEDS_TRIGGERS
+	select LEDS_TRIGGER_AUDIO
 	select ACPI_PLATFORM_PROFILE
 	help
 	  Say Y here if you have a WMI aware Asus laptop (like Eee PCs or new
diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index 62ce198a3463..89b604e04d7f 100644
--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -208,6 +208,7 @@ struct asus_wmi {
 	int kbd_led_wk;
 	struct led_classdev lightbar_led;
 	int lightbar_led_wk;
+	struct led_classdev micmute_led;
 	struct workqueue_struct *led_workqueue;
 	struct work_struct tpd_led_work;
 	struct work_struct wlan_led_work;
@@ -1028,12 +1029,23 @@ static enum led_brightness lightbar_led_get(struct led_classdev *led_cdev)
 	return result & ASUS_WMI_DSTS_LIGHTBAR_MASK;
 }
 
+static int micmute_led_set(struct led_classdev *led_cdev,
+			   enum led_brightness brightness)
+{
+	int state = brightness != LED_OFF;
+	int err;
+
+	err = asus_wmi_set_devstate(ASUS_WMI_DEVID_MICMUTE_LED, state, NULL);
+	return err < 0 ? err : 0;
+}
+
 static void asus_wmi_led_exit(struct asus_wmi *asus)
 {
 	led_classdev_unregister(&asus->kbd_led);
 	led_classdev_unregister(&asus->tpd_led);
 	led_classdev_unregister(&asus->wlan_led);
 	led_classdev_unregister(&asus->lightbar_led);
+	led_classdev_unregister(&asus->micmute_led);
 
 	if (asus->led_workqueue)
 		destroy_workqueue(asus->led_workqueue);
@@ -1105,6 +1117,19 @@ static int asus_wmi_led_init(struct asus_wmi *asus)
 					   &asus->lightbar_led);
 	}
 
+	if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_MICMUTE_LED)) {
+		asus->micmute_led.name = "asus::micmute";
+		asus->micmute_led.max_brightness = 1;
+		asus->micmute_led.brightness = ledtrig_audio_get(LED_AUDIO_MICMUTE);
+		asus->micmute_led.brightness_set_blocking = micmute_led_set;
+		asus->micmute_led.default_trigger = "audio-micmute";
+
+		rv = led_classdev_register(&asus->platform_device->dev,
+						&asus->micmute_led);
+		if (rv)
+			goto error;
+	}
+
 error:
 	if (rv)
 		asus_wmi_led_exit(asus);
diff --git a/include/linux/platform_data/x86/asus-wmi.h b/include/linux/platform_data/x86/asus-wmi.h
index a571b47ff362..98f2b2f20f3e 100644
--- a/include/linux/platform_data/x86/asus-wmi.h
+++ b/include/linux/platform_data/x86/asus-wmi.h
@@ -49,6 +49,7 @@
 #define ASUS_WMI_DEVID_LED4		0x00020014
 #define ASUS_WMI_DEVID_LED5		0x00020015
 #define ASUS_WMI_DEVID_LED6		0x00020016
+#define ASUS_WMI_DEVID_MICMUTE_LED		0x00040017
 
 /* Backlight and Brightness */
 #define ASUS_WMI_DEVID_ALS_ENABLE	0x00050001 /* Ambient Light Sensor */