On Fri, May 13, 2016 at 7:19 AM, Laxman Dewangan [off-list ref] wrote:

MAXIM Semiconductor's PMIC, MAX77620/MAX20024 has 8 GPIO pins
which also act as the special function in alternate mode. Also
there is configuration like push-pull, open drain, FPS timing
etc for these pins.

Add pin control driver to configure these parameters through
pin control APIs.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviewed-by: Linus Walleij <redacted>

Patch applied for the next kernel cycle.

+       switch (param) {
+       case PIN_CONFIG_DRIVE_OPEN_DRAIN:
+               if (mpci->pin_info[pin].drv_type == MAX77620_PIN_OD_DRV)
+                       arg = 1;
+               break;

Hmmmm OK is this one of those cases we discussed where
you need to be able to tell the pin config back-end to do the
open draining (etc) from the GPIO driver?

Yours,
Linus Walleij