linux-hardened/include/linux/pinctrl
Linus Walleij 1e63d7b936 gpiolib: separation of pin concerns
The fact that of_gpiochip_add_pin_range() and
gpiochip_add_pin_range() share too much code is fragile and
will invariably mean that bugs need to be fixed in two places
instead of one.

So separate the concerns of gpiolib.c and gpiolib-of.c and
have the latter call the former as back-end. This is necessary
also when going forward with other device descriptions such
as ACPI.

This is done by:

- Adding a return code to gpiochip_add_pin_range() so we can
  reliably check whether this succeeds.

- Get rid of the custom of_pinctrl_add_gpio_range() from
  pinctrl. Instead create of_pinctrl_get() to just retrive the
  pin controller per se from an OF node. This composite
  function was just begging to be deleted, it was way to
  purpose-specific.

- Use pinctrl_dev_get_name() to get the name of the retrieved
  pin controller and use that to call back into the generic
  gpiochip_add_pin_range().

Now the pin range is only allocated and tied to a pin
controller from the core implementation in gpiolib.c.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2012-11-11 19:06:07 +01:00
..
consumer.h Prepared for main script 2012-10-03 13:45:43 -07:00
machine.h UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers 2012-10-02 18:01:25 +01:00
pinconf-generic.h pinctrl: introduce generic pin config 2012-03-12 22:49:02 +01:00
pinconf.h pinctrl: (cosmetic) fix two entries in DocBook comments 2012-05-10 13:22:01 +02:00
pinctrl-state.h pinctrl: clarify idle vs sleep states 2012-10-01 08:04:52 +02:00
pinctrl.h gpiolib: separation of pin concerns 2012-11-11 19:06:07 +01:00
pinmux.h UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers 2012-10-02 18:01:25 +01:00