diff options
| author | Rex Zhu <Rex.Zhu@amd.com> | 2016-03-16 09:45:40 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2016-05-02 22:20:18 +0300 |
| commit | cb48a13ef994fcc4d1813c5c3241d4e4496c2199 (patch) | |
| tree | 1336209b042e9cd9f9e8bd7dca103a6bdc5ac7fc /drivers/gpu/drm/amd/amdgpu/vce_v2_0.c | |
| parent | b6723c8da55af5309cf06e71a5228f3c02846c5a (diff) | |
| download | linux-cb48a13ef994fcc4d1813c5c3241d4e4496c2199.tar.xz | |
drm/amdgpu: fix issue that can't set vce clock gate.
Need to soft reset VCE as part of the clockgating
sequence.
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@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/vce_v2_0.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/vce_v2_0.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/vce_v2_0.c b/drivers/gpu/drm/amd/amdgpu/vce_v2_0.c index c7e885bcfd41..fda89ec1d33b 100644 --- a/drivers/gpu/drm/amd/amdgpu/vce_v2_0.c +++ b/drivers/gpu/drm/amd/amdgpu/vce_v2_0.c @@ -44,7 +44,7 @@ static void vce_v2_0_mc_resume(struct amdgpu_device *adev); static void vce_v2_0_set_ring_funcs(struct amdgpu_device *adev); static void vce_v2_0_set_irq_funcs(struct amdgpu_device *adev); - +static int vce_v2_0_wait_for_idle(void *handle); /** * vce_v2_0_ring_get_rptr - get read pointer * @@ -339,6 +339,21 @@ static void vce_v2_0_set_dyn_cg(struct amdgpu_device *adev, bool gated) { u32 orig, tmp; + if (gated) { + if (vce_v2_0_wait_for_idle(adev)) { + DRM_INFO("VCE is busy, Can't set clock gateing"); + return; + } + WREG32_P(mmVCE_VCPU_CNTL, 0, ~VCE_VCPU_CNTL__CLK_EN_MASK); + WREG32_P(mmVCE_SOFT_RESET, VCE_SOFT_RESET__ECPU_SOFT_RESET_MASK, ~VCE_SOFT_RESET__ECPU_SOFT_RESET_MASK); + mdelay(100); + WREG32(mmVCE_STATUS, 0); + } else { + WREG32_P(mmVCE_VCPU_CNTL, VCE_VCPU_CNTL__CLK_EN_MASK, ~VCE_VCPU_CNTL__CLK_EN_MASK); + WREG32_P(mmVCE_SOFT_RESET, VCE_SOFT_RESET__ECPU_SOFT_RESET_MASK, ~VCE_SOFT_RESET__ECPU_SOFT_RESET_MASK); + mdelay(100); + } + tmp = RREG32(mmVCE_CLOCK_GATING_B); tmp &= ~0x00060006; if (gated) { @@ -362,6 +377,7 @@ static void vce_v2_0_set_dyn_cg(struct amdgpu_device *adev, bool gated) if (gated) WREG32(mmVCE_CGTT_CLK_OVERRIDE, 0); + WREG32_P(mmVCE_SOFT_RESET, 0, ~VCE_SOFT_RESET__ECPU_SOFT_RESET_MASK); } static void vce_v2_0_disable_cg(struct amdgpu_device *adev) |