diff options
| author | Alex Deucher <[email protected]> | 2016-06-01 16:28:13 +0000 |
|---|---|---|
| committer | Alex Deucher <[email protected]> | 2016-07-07 18:50:59 +0000 |
| commit | 5c614792474bf80b87d6cd915d9db14406c9c779 (patch) | |
| tree | b86e84008c8afc11b4960bc414a64e6d18008601 /drivers/gpu/drm/amd/amdgpu/amdgpu_atpx_handler.c | |
| parent | drm/radeon: allow PACKET3_PFP_SYNC_ME on evergreen (diff) | |
| download | kernel-5c614792474bf80b87d6cd915d9db14406c9c779.tar.gz kernel-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 <[email protected]>
Acked-by: Christian König <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
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; |