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drm/amd/powerplay: add helper function to get dpm freq informations

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this function can help driver to get ppclk informations

Signed-off-by: Kevin Wang <kevin1.wang@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Kevin Wang 2019-03-27 14:46:20 +08:00 committed by Alex Deucher
parent 98e1a543c7
commit 3ac54a5043
2 changed files with 41 additions and 0 deletions
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37
drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
View File

@ -60,6 +60,43 @@ int smu_get_smc_version(struct smu_context *smu, uint32_t *if_version, uint32_t
return ret;
}
int smu_get_dpm_freq_by_index(struct smu_context *smu, enum smu_clk_type clk_type,
uint16_t level, uint32_t *value)
{
int ret = 0, clk_id = 0;
uint32_t param;
if (!value)
return -EINVAL;
clk_id = smu_clk_get_index(smu, clk_type);
if (clk_id < 0)
return clk_id;
param = (uint32_t)(((clk_id & 0xffff) << 16) | (level & 0xffff));
ret = smu_send_smc_msg_with_param(smu,SMU_MSG_GetDpmFreqByIndex,
param);
if (ret)
return ret;
ret = smu_read_smc_arg(smu, &param);
if (ret)
return ret;
/* BIT31: 0 - Fine grained DPM, 1 - Dicrete DPM
* now, we un-support it */
*value = param & 0x7fffffff;
return ret;
}
int smu_get_dpm_level_count(struct smu_context *smu, enum smu_clk_type clk_type,
uint32_t *value)
{
return smu_get_dpm_freq_by_index(smu, clk_type, 0xff, value);
}
int smu_dpm_set_power_gate(struct smu_context *smu, uint32_t block_type,
bool gate)
{

4
drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
View File

@ -928,4 +928,8 @@ extern int smu_handle_task(struct smu_context *smu,
enum amd_dpm_forced_level level,
enum amd_pp_task task_id);
int smu_get_smc_version(struct smu_context *smu, uint32_t *if_version, uint32_t *smu_version);
int smu_get_dpm_freq_by_index(struct smu_context *smu, enum smu_clk_type clk_type,
uint16_t level, uint32_t *value);
int smu_get_dpm_level_count(struct smu_context *smu, enum smu_clk_type clk_type,
uint32_t *value);
#endif