Add generic PWM based tachometer driver via HWMON interface
to report the RPM of motor. This drivers get the period/duty
cycle from PWM IP which captures the motor PWM output.
This driver implements a simple interface for monitoring the speed of
a fan and exposes it in roatations per minute (RPM)
AIUI, the PWM framework already exposes a sysfs node with period
information. We should just use that instead of adding a new driver for
this.
In any case, we cannot add something like this to device tree since it's
not a hardware device.
Mikko
On 21.02.2018 08:58, Rajkumar Rampelli wrote:
On 02/20/2018 11:15 PM, Mikko Perttunen wrote:
AIUI, the PWM framework already exposes a sysfs node with period information.
We should just use that instead of adding a new driver for this.
I am kind of lost. Please explain.
Are you saying that we should drop the pwm-fan driver as well (whic
On 02/20/2018 10:58 PM, Rajkumar Rampelli wrote:
Add generic PWM based tachometer driver via HWMON interface
to report the RPM of motor. This drivers get the period/duty
cycle from PWM IP which captures the motor PWM output.
This driver implements a simple interface for monitoring the speed of
a
On 21.02.2018 16:46, Guenter Roeck wrote:
On 02/20/2018 11:15 PM, Mikko Perttunen wrote:
AIUI, the PWM framework already exposes a sysfs node with period
information. We should just use that instead of adding a new driver
for this.
I am kind of lost. Please explain.
Are you saying that we sh
On Wed, Feb 21, 2018 at 05:20:29PM +0200, Mikko Perttunen wrote:
> On 21.02.2018 16:46, Guenter Roeck wrote:
> >On 02/20/2018 11:15 PM, Mikko Perttunen wrote:
> >>AIUI, the PWM framework already exposes a sysfs node with period
> >>information. We should just use that instead of adding a new driver
On Wednesday 21 February 2018 09:38 PM, Guenter Roeck wrote:
On Wed, Feb 21, 2018 at 05:20:29PM +0200, Mikko Perttunen wrote:
On 21.02.2018 16:46, Guenter Roeck wrote:
On 02/20/2018 11:15 PM, Mikko Perttunen wrote:
AIUI, the PWM framework already exposes a sysfs node with period
information.
On Wednesday 21 February 2018 08:20 PM, Guenter Roeck wrote:
On 02/20/2018 10:58 PM, Rajkumar Rampelli wrote:
Add generic PWM based tachometer driver via HWMON interface
to report the RPM of motor. This drivers get the period/duty
cycle from PWM IP which captures the motor PWM output.
This dri
On 02/27/2018 09:38 PM, Rajkumar Rampelli wrote:
On Wednesday 21 February 2018 08:20 PM, Guenter Roeck wrote:
On 02/20/2018 10:58 PM, Rajkumar Rampelli wrote:
Add generic PWM based tachometer driver via HWMON interface
to report the RPM of motor. This drivers get the period/duty
cycle from PWM
On Wednesday 28 February 2018 11:28 AM, Guenter Roeck wrote:
On 02/27/2018 09:38 PM, Rajkumar Rampelli wrote:
On Wednesday 21 February 2018 08:20 PM, Guenter Roeck wrote:
On 02/20/2018 10:58 PM, Rajkumar Rampelli wrote:
Add generic PWM based tachometer driver via HWMON interface
to report th
On 02/28/2018 08:12 AM, Rajkumar Rampelli wrote:
On Wednesday 28 February 2018 11:28 AM, Guenter Roeck wrote:
On 02/27/2018 09:38 PM, Rajkumar Rampelli wrote:
On Wednesday 21 February 2018 08:20 PM, Guenter Roeck wrote:
On 02/20/2018 10:58 PM, Rajkumar Rampelli wrote:
Add generic PWM based
On 02/27/2018 11:03 PM, Mikko Perttunen wrote:
On 02/28/2018 08:12 AM, Rajkumar Rampelli wrote:
On Wednesday 28 February 2018 11:28 AM, Guenter Roeck wrote:
On 02/27/2018 09:38 PM, Rajkumar Rampelli wrote:
On Wednesday 21 February 2018 08:20 PM, Guenter Roeck wrote:
On 02/20/2018 10:58 PM,
On Wed, Feb 21, 2018 at 05:20:29PM +0200, Mikko Perttunen wrote:
> On 21.02.2018 16:46, Guenter Roeck wrote:
> > On 02/20/2018 11:15 PM, Mikko Perttunen wrote:
> > > AIUI, the PWM framework already exposes a sysfs node with period
> > > information. We should just use that instead of adding a new d
On Wednesday 28 February 2018 07:59 PM, Guenter Roeck wrote:
On 02/27/2018 11:03 PM, Mikko Perttunen wrote:
On 02/28/2018 08:12 AM, Rajkumar Rampelli wrote:
On Wednesday 28 February 2018 11:28 AM, Guenter Roeck wrote:
On 02/27/2018 09:38 PM, Rajkumar Rampelli wrote:
On Wednesday 21 Februa
On 03/07/2018 01:47 AM, Rajkumar Rampelli wrote:
On Wednesday 28 February 2018 07:59 PM, Guenter Roeck wrote:
On 02/27/2018 11:03 PM, Mikko Perttunen wrote:
On 02/28/2018 08:12 AM, Rajkumar Rampelli wrote:
On Wednesday 28 February 2018 11:28 AM, Guenter Roeck wrote:
On 02/27/2018 09:38 PM,
On Wednesday 07 March 2018 07:50 PM, Guenter Roeck wrote:
On 03/07/2018 01:47 AM, Rajkumar Rampelli wrote:
While I am not opposed to ABI changes, the merits of those would
need to be
discussed on the mailing list. But replacing "fan1_input" with "rpm" is
not an acceptable ABI change, even
On 07.03.2018 16:20, Guenter Roeck wrote:
On 03/07/2018 01:47 AM, Rajkumar Rampelli wrote:
On Wednesday 28 February 2018 07:59 PM, Guenter Roeck wrote:
On 02/27/2018 11:03 PM, Mikko Perttunen wrote:
On 02/28/2018 08:12 AM, Rajkumar Rampelli wrote:
On Wednesday 28 February 2018 11:28 AM,
On 03/07/2018 10:06 PM, Laxman Dewangan wrote:
On Wednesday 07 March 2018 07:50 PM, Guenter Roeck wrote:
On 03/07/2018 01:47 AM, Rajkumar Rampelli wrote:
While I am not opposed to ABI changes, the merits of those would need to be
discussed on the mailing list. But replacing "fan1_input" wi
On 03/07/2018 11:57 PM, Mikko Perttunen wrote:
On 07.03.2018 16:20, Guenter Roeck wrote:
On 03/07/2018 01:47 AM, Rajkumar Rampelli wrote:
On Wednesday 28 February 2018 07:59 PM, Guenter Roeck wrote:
On 02/27/2018 11:03 PM, Mikko Perttunen wrote:
On 02/28/2018 08:12 AM, Rajkumar Rampelli w
On Thursday 08 March 2018 08:01 PM, Guenter Roeck wrote:
On 03/07/2018 10:06 PM, Laxman Dewangan wrote:
The RPM is measured speed via PWM signal capture which is output
from fan.
So should we have the fan[1..n]_output_rpm?
No. I hear you clearly that you for some reason dislike fan[1..
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