linux/drivers/gpu/drm/amd/amdgpu/amdgpu_atpx_handler.c, branch v4.8

Revert "drm/amdgpu: work around lack of upstream ACPI support for D3cold"

2016-08-09T04:20:28Z

This reverts commit c63695cc5e5f685e924e25a8f9555f6e846f1fc6. Now that d3cold support is upstream, there is no more need for this workaround. bug: https://bugs.freedesktop.org/show_bug.cgi?id=97248

drm/amdgpu: init atpx at switcheroo register time (v2)

2016-07-29T18:36:32Z

If we do it at enable time, it's too late for the feature checks. v2: drop .init setting as per Peter's comments Reviewed-by: Peter Wu Signed-off-by: Alex Deucher Cc: Peter Wu

drm/amdgpu: work around lack of upstream ACPI support for D3cold

2016-07-07T18:51:13Z

Until Dave's patch to support the new hybrid gfx ACPI method goes upstream, we can fallback to the old ATPX method which seems to still work. Signed-off-by: Alex Deucher

drm/amdgpu/atpx: track whether if this is a hybrid graphics platform

2016-07-07T18:51:07Z

hybrid graphics in this case refers to systems which use the new platform d3 cold ACPI methods as opposed to ATPX for dGPU power control. Reviewed-by: Hawking Zhang Acked-by: Christian König Signed-off-by: Alex Deucher

drm/amdgpu/atpx: drop forcing of dGPU power control

2016-07-07T18:51:02Z

Now that we handle this correctly, there is no need to force it. Reviewed-by: Hawking Zhang Acked-by: Christian König Signed-off-by: Alex Deucher

drm/amdgpu/atpx: add a query for ATPX dGPU power control

2016-07-07T18:51:01Z

The runtime pm sequence is different depending on whether or not the platform supports ATPX dGPU power control. Reviewed-by: Hawking Zhang Acked-by: Christian König Signed-off-by: Alex Deucher

drm/amdgpu: add a delay after ATPX dGPU power off

2016-07-07T18:51:01Z

ATPX dGPU power control requires a 200ms delay between power off and on. This should fix dGPU failures on resume from power off. Reviewed-by: Hawking Zhang Acked-by: Christian König Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org

drm/amdgpu: clean up atpx power control handling

2016-07-07T18:51:00Z

The presence of the power control method should be determined via the presence of the method in function 0. However, some sbioses only set the appropriate bits in function 1 so use then to override a missing power control function. Reviewed-by: Hawking Zhang Acked-by: Christian König Signed-off-by: Alex Deucher

drm/amdgpu: disable power control on hybrid laptops

2016-07-07T18:50:59Z

Windows 10 (and some 8.1) systems use standardized ACPI calls for hybrid laptops to control dGPU power. Detect those cases and disable the AMD specific ATPX power control. Reviewed-by: Hawking Zhang Acked-by: Christian König Signed-off-by: Alex Deucher

drm/amdgpu: print a message if ATPX dGPU power control is missing

2016-04-27T16:27:09Z

It will help identify problematic boards. Signed-off-by: Alex Deucher