Commit 8b3d243e authored by Kevin Wang's avatar Kevin Wang Committed by Alex Deucher
Browse files

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: default avatarKevin Wang <kevin1.wang@amd.com>
Reviewed-by: default avatarHuang Rui <ray.huang@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent b1e7e224

drivers/gpu/drm/amd/powerplay/amdgpu_smu.c

+36 −0
Original line number Diff line number Diff line
@@ -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)

{

drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h

+2 −0
Original line number Diff line number Diff line
@@ -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

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