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drm/amdgpu: add bypass mode for vce3.0 

Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Eric Huang <JinhuiEric.Huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Rex Zhu 2016-07-19 00:19:08 +08:00 committed by Alex Deucher
parent a93d54d842
commit ec38f1889a
1 changed files with 15 additions and 0 deletions
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15
drivers/gpu/drm/amd/amdgpu/vce_v3_0.c
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@ -655,6 +655,18 @@ static int vce_v3_0_process_interrupt(struct amdgpu_device *adev,
return 0;
}
static void vce_v3_set_bypass_mode(struct amdgpu_device *adev, bool enable)
{
u32 tmp = RREG32_SMC(ixGCK_DFS_BYPASS_CNTL);
if (enable)
tmp |= GCK_DFS_BYPASS_CNTL__BYPASSECLK_MASK;
else
tmp &= ~GCK_DFS_BYPASS_CNTL__BYPASSECLK_MASK;
WREG32_SMC(ixGCK_DFS_BYPASS_CNTL, tmp);
}
static int vce_v3_0_set_clockgating_state(void *handle,
enum amd_clockgating_state state)
{
@ -662,6 +674,9 @@ static int vce_v3_0_set_clockgating_state(void *handle,
bool enable = (state == AMD_CG_STATE_GATE) ? true : false;
int i;
if (adev->asic_type == CHIP_POLARIS10)
vce_v3_set_bypass_mode(adev, enable);
if (!(adev->cg_flags & AMD_CG_SUPPORT_VCE_MGCG))
return 0;