Re: amdgpu, dc, backlight brightness

2020-05-04 Thread Alex Deucher
On Mon, May 4, 2020 at 4:02 AM Andriy Gapon wrote: > > On 29/04/2020 21:15, Alex Deucher wrote: > > I think it varies from OEM to OEM and whatever windows required at the > > time. The sbios may also do different things depending on the osi > > string passed to ACPI. Originally, ACPI handled it

Re: amdgpu, dc, backlight brightness

2020-05-04 Thread Andriy Gapon
On 29/04/2020 21:15, Alex Deucher wrote: > I think it varies from OEM to OEM and whatever windows required at the > time. The sbios may also do different things depending on the osi > string passed to ACPI. Originally, ACPI handled it all directly. > Then we got some laptops which which did the w

Re: amdgpu, dc, backlight brightness

2020-04-29 Thread Alex Deucher
On Wed, Apr 29, 2020 at 3:29 AM Andriy Gapon wrote: > > > I see that amdgpu_atif_handler() has this comment and code: > /* todo: add DC handling */ > if ((req.pending & ATIF_PANEL_BRIGHTNESS_CHANGE_REQUEST) && > !amdgpu_device_has_dc_support(adev

amdgpu, dc, backlight brightness

2020-04-29 Thread Andriy Gapon
I see that amdgpu_atif_handler() has this comment and code: /* todo: add DC handling */ if ((req.pending & ATIF_PANEL_BRIGHTNESS_CHANGE_REQUEST) && !amdgpu_device_has_dc_support(adev)) { ... } So, this makes me curious how a typ