From c63695cc5e5f685e924e25a8f9555f6e846f1fc6 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Fri, 3 Jun 2016 17:06:18 -0400 Subject: [PATCH] drm/amdgpu: work around lack of upstream ACPI support for D3cold 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 --- drivers/gpu/drm/amd/amdgpu/amdgpu_atpx_handler.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atpx_handler.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_atpx_handler.c index 3e973c7942f0..0494fe7b62c0 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atpx_handler.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atpx_handler.c @@ -200,7 +200,16 @@ static int amdgpu_atpx_validate(struct amdgpu_atpx *atpx) atpx->is_hybrid = false; if (valid_bits & ATPX_MS_HYBRID_GFX_SUPPORTED) { printk("ATPX Hybrid Graphics\n"); +#if 1 + /* This is a temporary hack until the D3 cold support + * makes it upstream. The ATPX power_control method seems + * to still work on even if the system should be using + * the new standardized hybrid D3 cold ACPI interface. + */ + atpx->functions.power_cntl = true; +#else atpx->functions.power_cntl = false; +#endif atpx->is_hybrid = true; }