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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 <Kevin1.Wang@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Kevin Wang 2019-01-17 13:15:48 +08:00 committed by Alex Deucher
parent 143c75d651
commit 0989532330
3 changed files with 20 additions and 2 deletions
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8
drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
View File

@ -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);

13
drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
View File

@ -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)
{

1
drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
View File

@ -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