gpio: change gpiochip_request_own_desc() prototype

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The current prototype of gpiochip_request_own_desc() requires to obtain
a pointer to a descriptor. This is in contradiction to all other GPIO
request schemes, and imposes an extra step of obtaining a descriptor to
drivers. Most drivers actually cannot even perform that step since the
function that does it (gpichip_get_desc()) is gpiolib-private.

Change gpiochip_request_own_desc() to return a descriptor from a
(chip, hwnum) tuple and update users of this function (currently
gpiolib-acpi only).

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

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Alexandre Courbot 2014-08-19 10:06:09 -07:00 • committed by Linus Walleij

parent e46cf32ced

commit abdc08a3a2

4 changed files with 21 additions and 23 deletions

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include/linux/gpio/driver.h

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