drm/amdgpu: stop psp ring on suspend

Otherwise, the ring will fail to create on next resume.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

2 files changed, 11 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
index abd20819ba6b..0d530524ab21 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
@@ -455,6 +455,16 @@ static int psp_hw_fini(void *handle)
 
 static int psp_suspend(void *handle)
 {
+        int ret;
+        struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+        struct psp_context *psp = &adev->psp;
+
+        ret = psp_ring_stop(psp, PSP_RING_TYPE__KM);
+        if (ret) {
+                DRM_ERROR("PSP ring stop failed\n");
+                return ret;
+        }
+
         return 0;
 }
 
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.h
index e79795b59797..1b7d12d88720 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.h
@@ -125,6 +125,7 @@ struct amdgpu_psp_funcs {
 #define psp_prep_cmd_buf(ucode, type) (psp)->prep_cmd_buf((ucode), (type))
 #define psp_ring_init(psp, type) (psp)->ring_init((psp), (type))
 #define psp_ring_create(psp, type) (psp)->ring_create((psp), (type))
+#define psp_ring_stop(psp, type) (psp)->ring_stop((psp), (type))
 #define psp_ring_destroy(psp, type) ((psp)->ring_destroy((psp), (type)))
 #define psp_cmd_submit(psp, ucode, cmd_mc, fence_mc, index) \
                 (psp)->cmd_submit((psp), (ucode), (cmd_mc), (fence_mc), (index))