Entry point to powergate a particular instance of an IP.
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu.h | 4 +++
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 36 ++++++++++++++++++++++
drivers/gpu/drm/amd/include/amd_shared.h | 3 ++
3 files changed, 43 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index acb6d49bd00c..9a74cf9962f7 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -364,6 +364,10 @@ 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_inst(void *dev,
+ enum amd_ip_block_type block_type,
+ enum amd_powergating_state state,
+ 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 343c9f2ab1a0..6a1c6dae6309 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -2164,6 +2164,42 @@ int amdgpu_device_ip_set_clockgating_state(void *dev,
return r;
}
+/**
+ * amdgpu_device_ip_set_powergating_state_inst - set the PG state for an instance of an IP
+ *
+ * @dev: amdgpu_device pointer
+ * @block_type: Type of hardware IP (SMU, GFX, UVD, etc.)
+ * @state: powergating state (gate or ungate)
+ * @inst: IP instance to target
+ *
+ * Sets the requested powergating state for the selected instance of
+ * the hardware IP specified.
+ * Returns the error code from the last instance.
+ */
+int amdgpu_device_ip_set_powergating_state_inst(void *dev,
+ enum amd_ip_block_type block_type,
+ enum amd_powergating_state state,
+ 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].version->funcs->set_powergating_state_inst)
+ continue;
+ r = adev->ip_blocks[i].version->funcs->set_powergating_state_inst(
+ &adev->ip_blocks[i], state, inst);
+ if (r)
+ DRM_ERROR("set_powergating_state_inst of IP block <%s> %d failed %d\n",
+ adev->ip_blocks[i].version->funcs->name, inst, r);
+ }
+ return r;
+}
+
/**
* amdgpu_device_ip_set_powergating_state - set the PG state
*
diff --git a/drivers/gpu/drm/amd/include/amd_shared.h b/drivers/gpu/drm/amd/include/amd_shared.h
index 98d9e840b0e2..a31a3018a5eb 100644
--- a/drivers/gpu/drm/amd/include/amd_shared.h
+++ b/drivers/gpu/drm/amd/include/amd_shared.h
@@ -405,6 +405,9 @@ struct amd_ip_funcs {
enum amd_clockgating_state state);
int (*set_powergating_state)(struct amdgpu_ip_block *ip_block,
enum amd_powergating_state state);
+ int (*set_powergating_state_inst)(struct amdgpu_ip_block *ip_block,
+ enum amd_powergating_state state,
+ int inst);
void (*get_clockgating_state)(void *handle, u64 *flags);
void (*dump_ip_state)(struct amdgpu_ip_block *ip_block);
void (*print_ip_state)(struct amdgpu_ip_block *ip_block, struct drm_printer *p);
--
2.47.0
