[PATCH 6.1 0220/1146] drm/amdgpu: Revert "drm/amdgpu: getting fan speed pwm for vega10 properly"

Greg Kroah-Hartman
2022-12-28T15:27:46Z

From: Asher Song <Asher.Song@amd.com>

[ Upstream commit e5b781c56d46c44c52caa915f1b65064f2f7c1ba ]

This reverts commit 16fb4dca95daa9d8e037201166a58de8284f4268.

Unfortunately, that commit causes fan monitors can't be read and written
properly.

Fixes: 16fb4dca95daa9 ("drm/amdgpu: getting fan speed pwm for vega10 properly")
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
.../amd/pm/powerplay/hwmgr/vega10_thermal.c | 25 ++++++++++---------
1 file changed, 13 insertions(+), 12 deletions(-)

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 190af79f3236..dad3e3741a4e 100644
--- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_thermal.c
+++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_thermal.c
@@ -67,21 +67,22 @@ 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)
{
- struct amdgpu_device *adev = hwmgr->adev;
- uint32_t duty100, duty;
- uint64_t tmp64;
+ uint32_t current_rpm;
+ uint32_t percent = 0;

- 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.fanInfo.bNoFan)
+ return 0;

- if (!duty100)
- return -EINVAL;
+ if (vega10_get_current_rpm(hwmgr, &current_rpm))
+ return -1;
+
+ if (hwmgr->thermal_controller.
+ advanceFanControlParameters.usMaxFanRPM != 0)
+ percent = current_rpm * 255 /
+ hwmgr->thermal_controller.
+ advanceFanControlParameters.usMaxFanRPM;

- tmp64 = (uint64_t)duty * 255;
- do_div(tmp64, duty100);
- *speed = MIN((uint32_t)tmp64, 255);
+ *speed = MIN(percent, 255);

return 0;
}
--
2.35.1