Re: [PATCH] hwmon: (max6650) Add support for gpiodef
From: Guenter Roeck
Date: Thu Nov 14 2013 - 12:24:54 EST
On Thu, Nov 14, 2013 at 02:51:01PM +0000, Laszlo Papp wrote:
> It is necessary for end users when they are using the gpio pins connected to the
> fan controller. There is a separate gpiodef register provided, but it is unused
> under the usual circumstances and that is probably the reason why this feature
> has not been added before. It is necessary for our board to function properly.
> Signed-off-by: Laszlo Papp <lpapp@xxxxxxx>
> Documentation/hwmon/max6650 | 5 +++
> drivers/hwmon/max6650.c | 107 ++++++++++++++++++++++++++++++++++++++++++++
> 2 files changed, 112 insertions(+)
> diff --git a/Documentation/hwmon/max6650 b/Documentation/hwmon/max6650
> index 58d9644..32c69a8 100644
> --- a/Documentation/hwmon/max6650
> +++ b/Documentation/hwmon/max6650
> @@ -39,6 +39,11 @@ pwm1 rw relative speed (0-255), 255=max. speed.
> fan1_div rw sets the speed range the inputs can handle. Legal
> values are 1, 2, 4, and 8. Use lower values for
> faster fans.
> +gpio0 rw sets the gpio 0 PIN. Legal values are 0, 1, 2, and 3.
> +gpio1 rw sets the gpio 1 PIN. Legal values are 0, 1, 2, and 3.
> +gpio2 rw sets the gpio 2 PIN. Legal values are 0, 1, 2, and 3.
> +gpio3 rw sets the gpio 3 PIN. Legal values are 0, and 1.
> +gpio4 rw sets the gpio 4 PIN. Legal values are 0, and 1.
gpio pins should be exported through the gpio subsystem, usually with a gpio
driver. In this case, it may be acceptable to have the driver register with
the gpio subsystem to export the pins. Using local sysfs attributes is wrong
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