diff options
Diffstat (limited to 'drivers/platform/x86/asus-wmi.c')
| -rw-r--r-- | drivers/platform/x86/asus-wmi.c | 33 |
1 files changed, 20 insertions, 13 deletions
diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c index eb114f8d39e7..c4ad76ee7b5f 100644 --- a/drivers/platform/x86/asus-wmi.c +++ b/drivers/platform/x86/asus-wmi.c @@ -1076,7 +1076,12 @@ static int asus_wmi_hwmon_init(struct asus_wmi *asus) */ static int read_backlight_power(struct asus_wmi *asus) { - int ret = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_BACKLIGHT); + int ret; + if (asus->driver->quirks->store_backlight_power) + ret = !asus->driver->panel_power; + else + ret = asus_wmi_get_devstate_simple(asus, + ASUS_WMI_DEVID_BACKLIGHT); if (ret < 0) return ret; @@ -1138,24 +1143,23 @@ static int update_bl_status(struct backlight_device *bd) { struct asus_wmi *asus = bl_get_data(bd); u32 ctrl_param; - int power, err; - - if (asus->driver->quirks->scalar_panel_brightness) - ctrl_param = get_scalar_command(bd); - else - ctrl_param = bd->props.brightness; - - err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS, - ctrl_param, NULL); - - if (err < 0) - return err; + int power, err = 0; power = read_backlight_power(asus); if (power != -ENODEV && bd->props.power != power) { ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK); err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT, ctrl_param, NULL); + if (asus->driver->quirks->store_backlight_power) + asus->driver->panel_power = bd->props.power; + } else { + if (asus->driver->quirks->scalar_panel_brightness) + ctrl_param = get_scalar_command(bd); + else + ctrl_param = bd->props.brightness; + + err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS, + ctrl_param, NULL); } return err; } @@ -1217,6 +1221,9 @@ static int asus_wmi_backlight_init(struct asus_wmi *asus) asus->backlight_device = bd; + if (asus->driver->quirks->store_backlight_power) + asus->driver->panel_power = power; + bd->props.brightness = read_brightness(bd); bd->props.power = power; backlight_update_status(bd); |