On Thu 12 Dec 11:15 PST 2013, Linus Walleij wrote: > On Wed, Dec 11, 2013 at 2:49 AM, Stephen Boyd <sboyd@xxxxxxxxxxxxxx> wrote: ... > > I don't follow what Linus is recommending. How could > > .gpio_request_enable()/.gpio_disable_free() help us here? > > That removes the need to define a single group for each pin that > can be used as GPIO. For the TLMM chip the pin can not be used as GPIO when another function is selected for the pin. And upon leaving a state with a function defined the choosen mux is disabled, turning the pin back to a GPIO pin. So I don't think this is applicable for us, any unused pin is a GPIO pin. The reason why there are 1 pingroup per pin is because a pingroup represent a configurable entity, i.e. a config register in the TLMM chip; which is one per pin for the GPIO pins. Regards, Bjorn -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
