diff options
Diffstat (limited to 'drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c')
| -rw-r--r-- | drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c b/drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c index b5419e8eba89..007f84bdda6f 100644 --- a/drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c +++ b/drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c @@ -1228,6 +1228,41 @@ smu_v11_0_set_fan_speed_percent(struct smu_context *smu, uint32_t speed) return smu_v11_0_set_fan_static_mode(smu, FDO_PWM_MODE_STATIC); } +int smu_v11_0_set_fan_speed_rpm(struct smu_context *smu, + uint32_t speed) +{ + struct amdgpu_device *adev = smu->adev; + /* + * crystal_clock_freq used for fan speed rpm calculation is + * always 25Mhz. So, hardcode it as 2500(in 10K unit). + */ + uint32_t crystal_clock_freq = 2500; + uint32_t tach_period; + int ret; + + ret = smu_v11_0_auto_fan_control(smu, 0); + if (ret) + return ret; + + /* + * To prevent from possible overheat, some ASICs may have requirement + * for minimum fan speed: + * - For some NV10 SKU, the fan speed cannot be set lower than + * 700 RPM. + * - For some Sienna Cichlid SKU, the fan speed cannot be set + * lower than 500 RPM. + */ + tach_period = 60 * crystal_clock_freq * 10000 / (8 * speed); + WREG32_SOC15(THM, 0, mmCG_TACH_CTRL, + REG_SET_FIELD(RREG32_SOC15(THM, 0, mmCG_TACH_CTRL), + CG_TACH_CTRL, TARGET_PERIOD, + tach_period)); + + ret = smu_v11_0_set_fan_static_mode(smu, FDO_PWM_MODE_STATIC_RPM); + + return ret; +} + int smu_v11_0_set_fan_control_mode(struct smu_context *smu, uint32_t mode) |