diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2016-06-01 12:28:13 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2016-07-07 14:50:59 -0400 |
| commit | 5c614792474bf80b87d6cd915d9db14406c9c779 (patch) | |
| tree | b86e84008c8afc11b4960bc414a64e6d18008601 /drivers/gpu/drm/amd/amdgpu/amdgpu_atpx_handler.c | |
| parent | 662ce7bce7a4dac4a9587fb78a745c061a402b7f (diff) | |
| download | linux-5c614792474bf80b87d6cd915d9db14406c9c779.tar.gz linux-5c614792474bf80b87d6cd915d9db14406c9c779.tar.bz2 linux-5c614792474bf80b87d6cd915d9db14406c9c779.zip | |
drm/amdgpu: disable power control on hybrid laptops
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 <Hawking.Zhang@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
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 | 5 |
1 files changed, 5 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 35a1248aaa77..3af1c3aceab3 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atpx_handler.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atpx_handler.c @@ -183,6 +183,11 @@ static int amdgpu_atpx_validate(struct amdgpu_atpx *atpx) ATPX_DFP_SIGNAL_MUXED)) atpx->functions.disp_mux_cntl = true; + if (valid_bits & ATPX_MS_HYBRID_GFX_SUPPORTED) { + printk("Hybrid Graphics, ATPX dGPU power cntl disabled\n"); + atpx->functions.power_cntl = false; + } + kfree(info); } return 0; |