[PATCH 14/32] acer-wmi: Port to new backlight interface selection API

[joeyli]

On Wed, Jun 10, 2015 at 03:01:14PM +0200, Hans de Goede wrote:
> Port the backlight selection logic to the new backlight interface
> selection API.
> 
> This commit also removes various obsolete pr_xxx messages related to
> backlight interface selection. These are obsolete because they assume
> there is only a vendor or acpi backlight driver and no other choice.
> Also they are not necessary, if the user wants to know which backlight
> interfaces are registered a simple "ls /sys/class/backlight" suffices.
> 
> Signed-off-by: Hans de Goede <hdegoede at redhat.com>

Reviewed-by: Lee, Chun-Yi <jlee at suse.com>

Thanks a lot!
Joey Lee

> ---
>  drivers/platform/x86/acer-wmi.c | 10 +++-------
>  1 file changed, 3 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/platform/x86/acer-wmi.c b/drivers/platform/x86/acer-wmi.c
> index 3ac29a1..f6b280d 100644
> --- a/drivers/platform/x86/acer-wmi.c
> +++ b/drivers/platform/x86/acer-wmi.c
> @@ -2246,14 +2246,10 @@ static int __init acer_wmi_init(void)
>  	set_quirks();
>  
>  	if (dmi_check_system(video_vendor_dmi_table))
> -		acpi_video_dmi_promote_vendor();
> -	if (acpi_video_backlight_support()) {
> +		acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
> +
> +	if (acpi_video_get_backlight_type() != acpi_backlight_vendor)
>  		interface->capability &= ~ACER_CAP_BRIGHTNESS;
> -		pr_info("Brightness must be controlled by acpi video driver\n");
> -	} else {
> -		pr_info("Disabling ACPI video driver\n");
> -		acpi_video_unregister_backlight();
> -	}
>  
>  	if (wmi_has_guid(WMID_GUID3)) {
>  		if (ec_raw_mode) {
> -- 
> 2.4.2
>