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| author | Kevin Wang | 2019-04-18 12:46:04 +0200 |
|---|---|---|
| committer | Alex Deucher | 2019-06-22 01:59:29 +0200 |
| commit | 8b3d243e47ddd4a570150651e028ecd1c30287bc (patch) | |
| tree | ff64eb109800fd07dc2e6be1e0a34b8f998b4736 /drivers/gpu/drm/amd/powerplay/amdgpu_smu.c | |
| parent | drm/amd/powerplay: add function print_clk_levels for navi10 (diff) | |
| download | kernel-qcow2-linux-8b3d243e47ddd4a570150651e028ecd1c30287bc.tar.gz kernel-qcow2-linux-8b3d243e47ddd4a570150651e028ecd1c30287bc.tar.xz kernel-qcow2-linux-8b3d243e47ddd4a570150651e028ecd1c30287bc.zip | |
drm/amd/powerplay: add helper function of smu_get_dpm_freq_range
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>
Diffstat (limited to 'drivers/gpu/drm/amd/powerplay/amdgpu_smu.c')
| -rw-r--r-- | drivers/gpu/drm/amd/powerplay/amdgpu_smu.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c index b2731a631c2b..ec84921332ac 100644 --- a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c +++ b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c @@ -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) { |