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drm/amd/powerplay: add helper function of smu_get_dpm_freq_range

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add this helper function to get dpm clk information (min, max);

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 2019-04-18 18:46:04 +08:00 committed by Alex Deucher
parent b1e7e22419
commit 8b3d243e47
2 changed files with 38 additions and 0 deletions
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36
drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
View File

@ -60,6 +60,42 @@ int smu_get_smc_version(struct smu_context *smu, uint32_t *if_version, uint32_t
return ret;
}
int smu_get_dpm_freq_range(struct smu_context *smu, enum smu_clk_type clk_type,
uint32_t *min, uint32_t *max)
{
int ret = 0, clk_id = 0;
uint32_t param = 0;
if (!min && !max)
return -EINVAL;
clk_id = smu_clk_get_index(smu, clk_type);
if (clk_id < 0)
return clk_id;
param = (clk_id & 0xffff) << 16;
if (max) {
ret = smu_send_smc_msg_with_param(smu, SMU_MSG_GetMaxDpmFreq, param);
if (ret)
return ret;
ret = smu_read_smc_arg(smu, max);
if (ret)
return ret;
}
if (min) {
ret = smu_send_smc_msg_with_param(smu, SMU_MSG_GetMinDpmFreq, param);
if (ret)
return ret;
ret = smu_read_smc_arg(smu, min);
if (ret)
return ret;
}
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)
{

2
drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
View File

@ -939,4 +939,6 @@ int smu_get_dpm_freq_by_index(struct smu_context *smu, enum smu_clk_type clk_typ
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);
int smu_get_dpm_freq_range(struct smu_context *smu, enum smu_clk_type clk_type,
uint32_t *min, uint32_t *max);
#endif