drm/amdgpu: add IP helpers for wait_for_idle and is_idle

Helpers to to call the IP functions for the selected IP.

Reviewed-by: Chunming zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

2 files changed, 34 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 0068955ae37f..7df1f486f1fb 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -187,6 +187,10 @@ int amdgpu_set_clockgating_state(struct amdgpu_device *adev,
 int amdgpu_set_powergating_state(struct amdgpu_device *adev,
                                   enum amd_ip_block_type block_type,
                                   enum amd_powergating_state state);
+int amdgpu_wait_for_idle(struct amdgpu_device *adev,
+                         enum amd_ip_block_type block_type);
+bool amdgpu_is_idle(struct amdgpu_device *adev,
+                    enum amd_ip_block_type block_type);
 
 struct amdgpu_ip_block_version {
         enum amd_ip_block_type type;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 9757a85e78d6..c281cfd65337 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -1102,6 +1102,36 @@ int amdgpu_set_powergating_state(struct amdgpu_device *adev,
         return r;
 }
 
+int amdgpu_wait_for_idle(struct amdgpu_device *adev,
+                         enum amd_ip_block_type block_type)
+{
+        int i, r;
+
+        for (i = 0; i < adev->num_ip_blocks; i++) {
+                if (adev->ip_blocks[i].type == block_type) {
+                        r = adev->ip_blocks[i].funcs->wait_for_idle((void *)adev);
+                        if (r)
+                                return r;
+                        break;
+                }
+        }
+        return 0;
+
+}
+
+bool amdgpu_is_idle(struct amdgpu_device *adev,
+                    enum amd_ip_block_type block_type)
+{
+        int i;
+
+        for (i = 0; i < adev->num_ip_blocks; i++) {
+                if (adev->ip_blocks[i].type == block_type)
+                        return adev->ip_blocks[i].funcs->is_idle((void *)adev);
+        }
+        return true;
+
+}
+
 const struct amdgpu_ip_block_version * amdgpu_get_ip_block(
                                         struct amdgpu_device *adev,
                                         enum amd_ip_block_type type)