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| author | Alex Deucher <alexander.deucher@amd.com> | 2016-09-14 14:01:41 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2016-09-22 10:30:30 -0400 |
| commit | efc83cf423df99bd6c1899cf0b65897f1ee75751 (patch) | |
| tree | 14ca67f1f2328a2f8cb1cdaef487b446e43d18a2 /drivers/gpu/drm/amd/amdgpu/amdgpu_atpx_handler.c | |
| parent | 9cee3c1f95298fb98bbec9e8410d4da64a271fe5 (diff) | |
| download | linux-efc83cf423df99bd6c1899cf0b65897f1ee75751.tar.gz linux-efc83cf423df99bd6c1899cf0b65897f1ee75751.tar.bz2 linux-efc83cf423df99bd6c1899cf0b65897f1ee75751.zip | |
drm/amdgpu/atpx: check for ATIF dGPU wake for display events support
Some ATPX laptops implement special circuitry to generate
display hotplug events via ACPI when the dGPU is powered off.
Check if this is supported.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_atpx_handler.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_atpx_handler.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atpx_handler.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_atpx_handler.c index 49de92600074..550c5ee704ec 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atpx_handler.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atpx_handler.c @@ -29,6 +29,7 @@ struct amdgpu_atpx { acpi_handle handle; struct amdgpu_atpx_functions functions; bool is_hybrid; + bool dgpu_req_power_for_displays; }; static struct amdgpu_atpx_priv { @@ -73,6 +74,10 @@ bool amdgpu_is_atpx_hybrid(void) { return amdgpu_atpx_priv.atpx.is_hybrid; } +bool amdgpu_atpx_dgpu_req_power_for_displays(void) { + return amdgpu_atpx_priv.atpx.dgpu_req_power_for_displays; +} + /** * amdgpu_atpx_call - call an ATPX method * @@ -213,6 +218,10 @@ static int amdgpu_atpx_validate(struct amdgpu_atpx *atpx) atpx->is_hybrid = true; } + atpx->dgpu_req_power_for_displays = false; + if (valid_bits & ATPX_DGPU_REQ_POWER_FOR_DISPLAYS) + atpx->dgpu_req_power_for_displays = true; + return 0; } |