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platform/x86: asus-wmi: Call led hw_changed API on kbd brightness change
Make asus-wmi notify on hotkey kbd brightness changes, listen for brightness events and update the brightness directly in the driver. Create new do_kbd_led_set function for in-driver update, and leave kbd_led_set for original led_classdev call path. Update the brightness by led_classdev_notify_brightness_hw_changed. This will allow userspace to monitor (poll) for brightness changes on the LED without reporting via input keymapping. Signed-off-by: Chris Chiu <chiu@endlessm.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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@ -470,6 +470,7 @@ static void kbd_led_update(struct work_struct *work)
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ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F);
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asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL);
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led_classdev_notify_brightness_hw_changed(&asus->kbd_led, asus->kbd_led_wk);
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}
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static int kbd_led_read(struct asus_wmi *asus, int *level, int *env)
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@ -500,15 +501,16 @@ static int kbd_led_read(struct asus_wmi *asus, int *level, int *env)
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return retval;
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}
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static void kbd_led_set(struct led_classdev *led_cdev,
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enum led_brightness value)
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static void do_kbd_led_set(struct led_classdev *led_cdev, int value)
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{
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struct asus_wmi *asus;
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int max_level;
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asus = container_of(led_cdev, struct asus_wmi, kbd_led);
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max_level = asus->kbd_led.max_brightness;
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if (value > asus->kbd_led.max_brightness)
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value = asus->kbd_led.max_brightness;
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if (value > max_level)
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value = max_level;
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else if (value < 0)
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value = 0;
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@ -516,6 +518,12 @@ static void kbd_led_set(struct led_classdev *led_cdev,
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queue_work(asus->led_workqueue, &asus->kbd_led_work);
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}
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static void kbd_led_set(struct led_classdev *led_cdev,
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enum led_brightness value)
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{
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do_kbd_led_set(led_cdev, value);
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}
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static enum led_brightness kbd_led_get(struct led_classdev *led_cdev)
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{
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struct asus_wmi *asus;
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@ -666,6 +674,7 @@ static int asus_wmi_led_init(struct asus_wmi *asus)
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asus->kbd_led_wk = led_val;
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asus->kbd_led.name = "asus::kbd_backlight";
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asus->kbd_led.flags = LED_BRIGHT_HW_CHANGED;
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asus->kbd_led.brightness_set = kbd_led_set;
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asus->kbd_led.brightness_get = kbd_led_get;
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asus->kbd_led.max_brightness = 3;
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@ -1758,6 +1767,15 @@ static void asus_wmi_notify(u32 value, void *context)
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}
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}
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if (code == NOTIFY_KBD_BRTUP) {
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do_kbd_led_set(&asus->kbd_led, asus->kbd_led_wk + 1);
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goto exit;
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}
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if (code == NOTIFY_KBD_BRTDWN) {
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do_kbd_led_set(&asus->kbd_led, asus->kbd_led_wk - 1);
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goto exit;
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}
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if (is_display_toggle(code) &&
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asus->driver->quirks->no_display_toggle)
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goto exit;
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