From 3ac54a50438053b1f4d3480c608eda50ae25775c Mon Sep 17 00:00:00 2001 From: Kevin Wang Date: Wed, 27 Mar 2019 14:46:20 +0800 Subject: [PATCH] drm/amd/powerplay: add helper function to get dpm freq informations this function can help driver to get ppclk informations Signed-off-by: Kevin Wang Reviewed-by: Huang Rui Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/powerplay/amdgpu_smu.c | 37 ++++++++++++++++++++++++++ drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h | 4 +++ 2 files changed, 41 insertions(+) diff --git a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c index 30dae7ca19c4..b2731a631c2b 100644 --- a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c +++ b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c @@ -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, ¶m); + 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) { diff --git a/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h b/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h index ac13f01afc84..0195fc77908d 100644 --- a/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h +++ b/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h @@ -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 -- 2.11.0