[PATCH] drm/amdgpu/vcn: fix vcn ring test failure in igt reload test

[Tianci Yin]

From: "Tianci.Yin" <tianci.yin at amd.com>

[why]
On Renoir, vcn ring test failed on the second time insmod in the reload
test. After invetigation, it proves that vcn only can disable dpg under
dpg unpause mode (dpg unpause mode is default for dec only, dpg pause
mode is for dec/enc).

[how]
unpause dpg in dpg stopping procedure.

Change-Id: If6ec3af694e1d6b63ebce386a563f03ca6d291c1
Signed-off-by: Tianci.Yin <tianci.yin at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c b/drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c
index 319ac8ea434b..6e0972cd1f2f 100644
--- a/drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c
@@ -1098,8 +1098,10 @@ static int vcn_v2_0_start(struct amdgpu_device *adev)
 
 static int vcn_v2_0_stop_dpg_mode(struct amdgpu_device *adev)
 {
+	struct dpg_pause_state state = {.fw_based = VCN_DPG_STATE__UNPAUSE};
 	uint32_t tmp;
 
+	vcn_v2_0_pause_dpg_mode(adev, 0, &state);
 	/* Wait for power status to be 1 */
 	SOC15_WAIT_ON_RREG(UVD, 0, mmUVD_POWER_STATUS, 1,
 		UVD_POWER_STATUS__UVD_POWER_STATUS_MASK);
-- 
2.25.1