* [PATCH] hwmon: (gsc-hwmon) fix fan pwm temperature scaling
@ 2023-06-06 15:30 Tim Harvey
2023-06-08 13:36 ` Guenter Roeck
0 siblings, 1 reply; 2+ messages in thread
From: Tim Harvey @ 2023-06-06 15:30 UTC (permalink / raw)
To: linux-kernel, linux-hwmon; +Cc: Guenter Roeck, Jean Delvare, Tim Harvey
The GSC fan pwm temperature register is in centidegrees celcius but the
Linux hwmon convention is to use milidegrees celcius. Fix the scaling.
Fixes: 3bce5377ef66 ("hwmon: Add Gateworks System Controller support")
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
---
drivers/hwmon/gsc-hwmon.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/hwmon/gsc-hwmon.c b/drivers/hwmon/gsc-hwmon.c
index 73e5d92b200b..1501ceb551e7 100644
--- a/drivers/hwmon/gsc-hwmon.c
+++ b/drivers/hwmon/gsc-hwmon.c
@@ -82,8 +82,8 @@ static ssize_t pwm_auto_point_temp_store(struct device *dev,
if (kstrtol(buf, 10, &temp))
return -EINVAL;
- temp = clamp_val(temp, 0, 10000);
- temp = DIV_ROUND_CLOSEST(temp, 10);
+ temp = clamp_val(temp, 0, 100000);
+ temp = DIV_ROUND_CLOSEST(temp, 100);
regs[0] = temp & 0xff;
regs[1] = (temp >> 8) & 0xff;
@@ -100,7 +100,7 @@ static ssize_t pwm_auto_point_pwm_show(struct device *dev,
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
- return sprintf(buf, "%d\n", 255 * (50 + (attr->index * 10)) / 100);
+ return sprintf(buf, "%d\n", 255 * (50 + (attr->index * 10)));
}
static SENSOR_DEVICE_ATTR_RO(pwm1_auto_point1_pwm, pwm_auto_point_pwm, 0);
--
2.25.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] hwmon: (gsc-hwmon) fix fan pwm temperature scaling
2023-06-06 15:30 [PATCH] hwmon: (gsc-hwmon) fix fan pwm temperature scaling Tim Harvey
@ 2023-06-08 13:36 ` Guenter Roeck
0 siblings, 0 replies; 2+ messages in thread
From: Guenter Roeck @ 2023-06-08 13:36 UTC (permalink / raw)
To: Tim Harvey; +Cc: linux-kernel, linux-hwmon, Jean Delvare
On Tue, Jun 06, 2023 at 08:30:04AM -0700, Tim Harvey wrote:
> The GSC fan pwm temperature register is in centidegrees celcius but the
> Linux hwmon convention is to use milidegrees celcius. Fix the scaling.
>
> Fixes: 3bce5377ef66 ("hwmon: Add Gateworks System Controller support")
> Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Applied.
Thanks,
Guenter
> ---
> drivers/hwmon/gsc-hwmon.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/hwmon/gsc-hwmon.c b/drivers/hwmon/gsc-hwmon.c
> index 73e5d92b200b..1501ceb551e7 100644
> --- a/drivers/hwmon/gsc-hwmon.c
> +++ b/drivers/hwmon/gsc-hwmon.c
> @@ -82,8 +82,8 @@ static ssize_t pwm_auto_point_temp_store(struct device *dev,
> if (kstrtol(buf, 10, &temp))
> return -EINVAL;
>
> - temp = clamp_val(temp, 0, 10000);
> - temp = DIV_ROUND_CLOSEST(temp, 10);
> + temp = clamp_val(temp, 0, 100000);
> + temp = DIV_ROUND_CLOSEST(temp, 100);
>
> regs[0] = temp & 0xff;
> regs[1] = (temp >> 8) & 0xff;
> @@ -100,7 +100,7 @@ static ssize_t pwm_auto_point_pwm_show(struct device *dev,
> {
> struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
>
> - return sprintf(buf, "%d\n", 255 * (50 + (attr->index * 10)) / 100);
> + return sprintf(buf, "%d\n", 255 * (50 + (attr->index * 10)));
> }
>
> static SENSOR_DEVICE_ATTR_RO(pwm1_auto_point1_pwm, pwm_auto_point_pwm, 0);
^ permalink raw reply [flat|nested] 2+ messages in thread
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