[PATCH 09/18] drm/amdgpu: add set_powergating_state_instance

[<boyuan.zhang@amd.com>]

From: Boyuan Zhang <boyuan.zhang@amd.com>

Add a new function to allow setting requested powergating state for the
given instance. If the instance value doesn't match with the one inside
ip_block, then do nothing since this request is for other instances with
the same block type.

Signed-off-by: Boyuan Zhang <boyuan.zhang@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu.h        |  4 +++
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 37 ++++++++++++++++++++++
 2 files changed, 41 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 3442564fe174..ae59497f3074 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -358,6 +358,10 @@ int amdgpu_device_ip_set_clockgating_state(void *dev,
 int amdgpu_device_ip_set_powergating_state(void *dev,
 					   enum amd_ip_block_type block_type,
 					   enum amd_powergating_state state);
+int amdgpu_device_ip_set_powergating_state_instance(void *dev,
+					   enum amd_ip_block_type block_type,
+					   enum amd_powergating_state state,
+					   unsigned int inst);
 void amdgpu_device_ip_get_clockgating_state(struct amdgpu_device *adev,
 					    u64 *flags);
 int amdgpu_device_ip_wait_for_idle(struct amdgpu_device *adev,
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 35a3e71a5a84..f0b6a9675405 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -2162,6 +2162,43 @@ int amdgpu_device_ip_set_powergating_state(void *dev,
 	return r;
 }
 
+/**
+ * amdgpu_device_ip_set_powergating_state_instance - set the PG state
+ *
+ * @dev: amdgpu_device pointer
+ * @block_type: Type of hardware IP (SMU, GFX, UVD, etc.)
+ * @state: powergating state (gate or ungate)
+ *
+ * Sets the requested powergating state for the given instance of
+ * the hardware IP specified.
+ * Returns the error code from the last instance.
+ */
+int amdgpu_device_ip_set_powergating_state_instance(void *dev,
+					   enum amd_ip_block_type block_type,
+					   enum amd_powergating_state state,
+					   unsigned int inst)
+{
+	struct amdgpu_device *adev = dev;
+	int i, r = 0;
+
+	for (i = 0; i < adev->num_ip_blocks; i++) {
+		if (!adev->ip_blocks[i].status.valid)
+			continue;
+		if (adev->ip_blocks[i].version->type != block_type)
+			continue;
+		if (adev->ip_blocks[i].instance != inst)
+			continue;
+		if (!adev->ip_blocks[i].version->funcs->set_powergating_state)
+			continue;
+		r = adev->ip_blocks[i].version->funcs->set_powergating_state(
+			(void *)&adev->ip_blocks[i], state);
+		if (r)
+			DRM_ERROR("set_powergating_state of IP block <%s> failed %d\n",
+				  adev->ip_blocks[i].version->funcs->name, r);
+	}
+	return r;
+}
+
 /**
  * amdgpu_device_ip_get_clockgating_state - get the CG state
  *
-- 
2.34.1