From: Alex Deucher Date: Wed, 4 Feb 2015 22:18:55 +0000 (-0500) Subject: drm/radeon: use 0-255 rather than 0-100 for pwm fan range X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=082452e125fe27a9f43add2269dfa2341fb71d30;p=sagit-ice-cold%2Fkernel_xiaomi_msm8998.git drm/radeon: use 0-255 rather than 0-100 for pwm fan range 0-255 seems to be the preferred range for the pwm interface. Reviewed-by: Christian König Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/radeon/radeon_pm.c b/drivers/gpu/drm/radeon/radeon_pm.c index 91e1bd246cad..9f758d39420d 100644 --- a/drivers/gpu/drm/radeon/radeon_pm.c +++ b/drivers/gpu/drm/radeon/radeon_pm.c @@ -585,7 +585,7 @@ static ssize_t radeon_hwmon_set_pwm1_enable(struct device *dev, if (err) return err; - switch(value) { + switch (value) { case 1: /* manual, percent-based */ rdev->asic->dpm.fan_ctrl_set_mode(rdev, FDO_PWM_MODE_STATIC); break; @@ -608,7 +608,7 @@ static ssize_t radeon_hwmon_get_pwm1_max(struct device *dev, struct device_attribute *attr, char *buf) { - return sprintf(buf, "%i\n", 100); /* pwm uses percent-based fan-control */ + return sprintf(buf, "%i\n", 255); } static ssize_t radeon_hwmon_set_pwm1(struct device *dev, @@ -623,6 +623,8 @@ static ssize_t radeon_hwmon_set_pwm1(struct device *dev, if (err) return err; + value = (value * 100) / 255; + err = rdev->asic->dpm.set_fan_speed_percent(rdev, value); if (err) return err; @@ -642,6 +644,8 @@ static ssize_t radeon_hwmon_get_pwm1(struct device *dev, if (err) return err; + speed = (speed * 255) / 100; + return sprintf(buf, "%i\n", speed); }