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drm/amdgpu/vcn: improve vcn dpg stop procedure 

Prior to disabling dpg, VCN need unpausing dpg mode, or VCN will hang in
S3 resuming.

Reviewed-by: James Zhu <James.Zhu@amd.com>
Signed-off-by: Tianci Yin <tianci.yin@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Tianci Yin 2022-03-23 23:54:58 +08:00 committed by Alex Deucher
parent c5650327ab
commit 6ea239adc2
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c
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@ -1480,8 +1480,11 @@ static int vcn_v3_0_start_sriov(struct amdgpu_device *adev)
static int vcn_v3_0_stop_dpg_mode(struct amdgpu_device *adev, int inst_idx)
{
struct dpg_pause_state state = {.fw_based = VCN_DPG_STATE__UNPAUSE};
uint32_t tmp;
vcn_v3_0_pause_dpg_mode(adev, 0, &state);
/* Wait for power status to be 1 */
SOC15_WAIT_ON_RREG(VCN, inst_idx, mmUVD_POWER_STATUS, 1,
UVD_POWER_STATUS__UVD_POWER_STATUS_MASK);