Revert "drm/amdgpu: Revert "drm/amdgpu: getting fan speed pwm for vega10 properly""

This reverts commit 4545ae2ed3f2f7c3f615a53399c9c8460ee5bca7.

The origin patch "drm/amdgpu: getting fan speed pwm for vega10 properly" works fine.
Test failure is caused by test case self.

Signed-off-by: Asher Song <Asher.Song@amd.com>
Reviewed-by: Guchun Chen <guchun.chen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_thermal.c b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_thermal.c
index dad3e37..190af79 100644 (file)
--- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_thermal.c
+++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_thermal.c
@@ -67,22 +67,21 @@ int vega10_fan_ctrl_get_fan_speed_info(struct pp_hwmgr *hwmgr,
 int vega10_fan_ctrl_get_fan_speed_pwm(struct pp_hwmgr *hwmgr,
                uint32_t *speed)
 {
-       uint32_t current_rpm;
-       uint32_t percent = 0;
-
-       if (hwmgr->thermal_controller.fanInfo.bNoFan)
-               return 0;
+       struct amdgpu_device *adev = hwmgr->adev;
+       uint32_t duty100, duty;
+       uint64_t tmp64;
 
-       if (vega10_get_current_rpm(hwmgr, &current_rpm))
-               return -1;
+       duty100 = REG_GET_FIELD(RREG32_SOC15(THM, 0, mmCG_FDO_CTRL1),
+                               CG_FDO_CTRL1, FMAX_DUTY100);
+       duty = REG_GET_FIELD(RREG32_SOC15(THM, 0, mmCG_THERMAL_STATUS),
+                               CG_THERMAL_STATUS, FDO_PWM_DUTY);
 
-       if (hwmgr->thermal_controller.
-                       advanceFanControlParameters.usMaxFanRPM != 0)
-               percent = current_rpm * 255 /
-                       hwmgr->thermal_controller.
-                       advanceFanControlParameters.usMaxFanRPM;
+       if (!duty100)
+               return -EINVAL;
 
-       *speed = MIN(percent, 255);
+       tmp64 = (uint64_t)duty * 255;
+       do_div(tmp64, duty100);
+       *speed = MIN((uint32_t)tmp64, 255);
 
        return 0;
 }