[PATCH] drm/amdgpu/vcn: Need to unpause dpg before stop dpg

[Deng, Emily]

[AMD Official Use Only - General]

Ping.....

Best wishes
Emily Deng



>-----Original Message-----
>From: Emily Deng <Emily.Deng at amd.com>
>Sent: Wednesday, June 21, 2023 9:30 AM
>To: amd-gfx at lists.freedesktop.org
>Cc: Deng, Emily <Emily.Deng at amd.com>
>Subject: [PATCH] drm/amdgpu/vcn: Need to unpause dpg before stop dpg
>
>Need to unpause dpg first, or it will hit follow error during stop dpg:
>"[drm] Register(1) [regUVD_POWER_STATUS] failed to reach value
>0x00000001 != 0x00000000n"
>
>Signed-off-by: Emily Deng <Emily.Deng at amd.com>
>---
> drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c | 2 ++
> 1 file changed, 2 insertions(+)
>
>diff --git a/drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c
>b/drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c
>index b48bb5212488..259795098173 100644
>--- a/drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c
>+++ b/drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c
>@@ -1424,8 +1424,10 @@ static int vcn_v4_0_start_sriov(struct
>amdgpu_device *adev)
>  */
> static void vcn_v4_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_v4_0_pause_dpg_mode(adev, inst_idx, &state);
>       /* Wait for power status to be 1 */
>       SOC15_WAIT_ON_RREG(VCN, inst_idx, regUVD_POWER_STATUS, 1,
>               UVD_POWER_STATUS__UVD_POWER_STATUS_MASK);
>--
>2.36.1