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asus-wmi: restore kbd led level after resume 

Afters suspend/resume cycle with closed lid the kbd backlight level
is lost. This patch will will restore this value to last known level.

Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
This commit is contained in:
Oleksij Rempel 2015-09-14 11:16:30 +02:00 committed by Darren Hart
parent 10e6aaabc3
commit 307340493f
1 changed files with 17 additions and 2 deletions
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19
drivers/platform/x86/asus-wmi.c
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@ -582,7 +582,7 @@ static void asus_wmi_led_exit(struct asus_wmi *asus)
static int asus_wmi_led_init(struct asus_wmi *asus)
{
int rv = 0;
int rv = 0, led_val;
asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
if (!asus->led_workqueue)
@ -602,9 +602,11 @@ static int asus_wmi_led_init(struct asus_wmi *asus)
goto error;
}
if (kbd_led_read(asus, NULL, NULL) >= 0) {
led_val = kbd_led_read(asus, NULL, NULL);
if (led_val >= 0) {
INIT_WORK(&asus->kbd_led_work, kbd_led_update);
asus->kbd_led_wk = led_val;
asus->kbd_led.name = "asus::kbd_backlight";
asus->kbd_led.brightness_set = kbd_led_set;
asus->kbd_led.brightness_get = kbd_led_get;
@ -2160,6 +2162,16 @@ static int asus_hotk_thaw(struct device *device)
return 0;
}
static int asus_hotk_resume(struct device *device)
{
struct asus_wmi *asus = dev_get_drvdata(device);
if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
queue_work(asus->led_workqueue, &asus->kbd_led_work);
return 0;
}
static int asus_hotk_restore(struct device *device)
{
struct asus_wmi *asus = dev_get_drvdata(device);
@ -2190,6 +2202,8 @@ static int asus_hotk_restore(struct device *device)
bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB);
rfkill_set_sw_state(asus->uwb.rfkill, bl);
}
if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
queue_work(asus->led_workqueue, &asus->kbd_led_work);
return 0;
}
@ -2197,6 +2211,7 @@ static int asus_hotk_restore(struct device *device)
static const struct dev_pm_ops asus_pm_ops = {
.thaw = asus_hotk_thaw,
.restore = asus_hotk_restore,
.resume = asus_hotk_resume,
};
static int asus_wmi_probe(struct platform_device *pdev)