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From a47880864c54f4203458ec0cac0e6782921648b0 Mon Sep 17 00:00:00 2001
From: Evan Quan <evan.quan@amd.com>
Date: Fri, 8 Sep 2017 13:09:50 +0800
Subject: [PATCH 0857/4131] drm/amdgpu: stop psp ring on suspend
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Otherwise, the ring will fail to create on next resume.
Change-Id: Ia25aded6c838ab8022ebf9f42adc9045133343ca
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>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c | 10 ++++++++++
drivers/gpu/drm/amd/amdgpu/amdgpu_psp.h | 1 +
2 files changed, 11 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
index fea1a86..aaada87 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
@@ -460,6 +460,16 @@ 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 e79795b..1b7d12d 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))
--
2.7.4
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