On 03/05/17 07:14, Guenter Roeck wrote: > On Tue, May 02, 2017 at 05:45:36PM +1200, Chris Packham wrote: >> When enabled temperature smoothing allows ramping the fan speed over a >> configurable period of time instead of jumping to the new speed >> instantaneously. >> >> Signed-off-by: Chris Packham <chris.packham@xxxxxxxxxxxxxxxxxxx> >> --- >> Documentation/hwmon/adt7475 | 5 ++ >> drivers/hwmon/adt7475.c | 121 ++++++++++++++++++++++++++++++++++++++++++++ >> 2 files changed, 126 insertions(+) >> >> diff --git a/Documentation/hwmon/adt7475 b/Documentation/hwmon/adt7475 >> index 85dc9e17bdee..31b15cb910ea 100644 >> --- a/Documentation/hwmon/adt7475 >> +++ b/Documentation/hwmon/adt7475 >> @@ -114,6 +114,11 @@ at the minimum (i.e. auto_point1_pwm). This can be configured using the >> pwm[1-*]_min sysfs attribute. A value of 0 means the fans will shut off. A >> value of 1 means the fans will run at auto_point1_pwm. >> >> +The responsiveness of the ADT747x to temperature changes can be configured. >> +This allows smoothing of the fan speed transition. To enable temperature >> +smoothing used the temp[1-*]_smoothing_enable sysfs attribute. To set the >> +transition time set the value in ms in the temp[1-*]_smoothing sysfs attribute. >> + > Does this require two attributes, or can setting '0' for temp[1-*]_smoothing > be used to disable it ? > One attribute could be made to work. I was following asc7621.c but from a usability perspective having to set the two attributes is not particularly convenient. The only argument for separating them is to allow smoothing at whatever the hardware default is. -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
