drm/amd/powerplay: implement sysfs of get num states function
add function smu_get_power_num_state function for sw-smu.
it's only for sysfs interface, the power state feature is not ready for sw-smu.
Signed-off-by: Kevin Wang <[email protected]>
Reviewed-by: Huang Rui <[email protected]>
Acked-by: Alex Deucher <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
index 53b470c..5eda007 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
@@ -350,9 +350,13 @@ static ssize_t amdgpu_get_pp_num_states(struct device *dev,
struct drm_device *ddev = dev_get_drvdata(dev);
struct amdgpu_device *adev = ddev->dev_private;
struct pp_states_info data;
- int i, buf_len;
+ int i, buf_len, ret;
- if (adev->powerplay.pp_funcs->get_pp_num_states)
+ if (is_support_sw_smu(adev)) {
+ ret = smu_get_power_num_states(&adev->smu, &data);
+ if (ret)
+ return ret;
+ } else if (adev->powerplay.pp_funcs->get_pp_num_states)
amdgpu_dpm_get_pp_num_states(adev, &data);
buf_len = snprintf(buf, PAGE_SIZE, "states: %d\n", data.nums);
diff --git a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
index 012d279..b4d6046d5 100644
--- a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
@@ -29,6 +29,19 @@
#include "smu_v11_0.h"
#include "atom.h"
+int smu_get_power_num_states(struct smu_context *smu,
+ struct pp_states_info *state_info)
+{
+ if (!state_info)
+ return -EINVAL;
+
+ /* not support power state */
+ memset(state_info, 0, sizeof(struct pp_states_info));
+ state_info->nums = 0;
+
+ return 0;
+}
+
int smu_common_read_sensor(struct smu_context *smu, enum amd_pp_sensors sensor,
void *data, uint32_t *size)
{
diff --git a/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h b/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
index 2e89a59..4498059 100644
--- a/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
+++ b/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
@@ -381,5 +381,6 @@ int smu_common_read_sensor(struct smu_context *smu, enum amd_pp_sensors sensor,
void *data, uint32_t *size);
int smu_sys_get_pp_table(struct smu_context *smu, void **table);
int smu_sys_set_pp_table(struct smu_context *smu, void *buf, size_t size);
+int smu_get_power_num_states(struct smu_context *smu, struct pp_states_info *state_info);
#endif
