diff options
| author | Huang Rui <ray.huang@amd.com> | 2017-04-10 04:29:13 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-04-29 00:32:13 +0300 |
| commit | 692bb1ac038a0b736c2b6e9bba41ac2da38e16cf (patch) | |
| tree | f4d90fb41a9ca78295d8dd4feab269c9dace76f7 /drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c | |
| parent | b4de2c5aab2d5cd84c2a648d825b0e48ca426e27 (diff) | |
| download | linux-692bb1ac038a0b736c2b6e9bba41ac2da38e16cf.tar.xz | |
drm/amdgpu: fix to clear ASIC INIT COMPLETE bit on resuming phase
ASIC_INIT_COMPLETE bit must be cleared during S3 resuming phase,
because VBIOS will check the bit to decide if execute ASIC_Init
posting via kernel driver.
Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c index ad4329922f79..1cf78f4dd339 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c @@ -1727,6 +1727,12 @@ void amdgpu_atombios_scratch_regs_restore(struct amdgpu_device *adev) { int i; + /* + * VBIOS will check ASIC_INIT_COMPLETE bit to decide if + * execute ASIC_Init posting via driver + */ + adev->bios_scratch[7] &= ~ATOM_S7_ASIC_INIT_COMPLETE_MASK; + for (i = 0; i < AMDGPU_BIOS_NUM_SCRATCH; i++) WREG32(mmBIOS_SCRATCH_0 + i, adev->bios_scratch[i]); } |