Commit 9a7fd013 authored by Alex Deucher's avatar Alex Deucher
Browse files

drm/amdgpu/swsmu: add smu11 helper to get manual fan speed (v2) 



Will be used to fetch the fan speeds when manual fan mode is
set.

v2: squash in a Coverity fix from Colin Ian King

Reviewed-by: default avatarEvan Quan <evan.quan@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 8d6e65ad

drivers/gpu/drm/amd/pm/inc/smu_v11_0.h

+3 −0
Original line number Diff line number Diff line
@@ -203,6 +203,9 @@ smu_v11_0_set_fan_control_mode(struct smu_context *smu, 
int smu_v11_0_set_fan_speed_rpm(struct smu_context *smu,

				       uint32_t speed);



int smu_v11_0_get_fan_speed_rpm(struct smu_context *smu,

				uint32_t *speed);



int smu_v11_0_set_xgmi_pstate(struct smu_context *smu,

				     uint32_t pstate);

drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c

+21 −0
Original line number Diff line number Diff line
@@ -1153,6 +1153,27 @@ int smu_v11_0_set_fan_speed_rpm(struct smu_context *smu, 
	return ret;

}



int smu_v11_0_get_fan_speed_rpm(struct smu_context *smu,

				uint32_t *speed)

{

	struct amdgpu_device *adev = smu->adev;

	uint32_t tach_period, crystal_clock_freq;

	uint64_t tmp64;



	tach_period = REG_GET_FIELD(RREG32_SOC15(THM, 0, mmCG_TACH_CTRL),

				    CG_TACH_CTRL, TARGET_PERIOD);

	if (!tach_period)

		return -EINVAL;



	crystal_clock_freq = amdgpu_asic_get_xclk(adev);



	tmp64 = (uint64_t)crystal_clock_freq * 60 * 10000;

	do_div(tmp64, (tach_period * 8));

	*speed = (uint32_t)tmp64;



	return 0;

}



int smu_v11_0_set_xgmi_pstate(struct smu_context *smu,

				     uint32_t pstate)

{

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