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authorAlexandre Courbot <acourbot@nvidia.com>2014-08-19 21:06:09 +0400
committerLinus Walleij <linus.walleij@linaro.org>2014-08-29 10:58:34 +0400
commitabdc08a3a263a20e49534a36291d657bf53dda5b (patch)
treee26e4f6c9f26f8d7dda2415b0e9ee0b00b03a331 /include/linux/gpio
parente46cf32ced90d00972d5c3d9322cdb848d183338 (diff)
downloadlinux-abdc08a3a263a20e49534a36291d657bf53dda5b.tar.xz
gpio: change gpiochip_request_own_desc() prototype
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>
Diffstat (limited to 'include/linux/gpio')
-rw-r--r--include/linux/gpio/driver.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h
index e78a2373e374..a2de58fffd19 100644
--- a/include/linux/gpio/driver.h
+++ b/include/linux/gpio/driver.h
@@ -166,7 +166,8 @@ int gpiochip_irqchip_add(struct gpio_chip *gpiochip,
#endif /* CONFIG_GPIO_IRQCHIP */
-int gpiochip_request_own_desc(struct gpio_desc *desc, const char *label);
+struct gpio_desc *gpiochip_request_own_desc(struct gpio_chip *chip, u16 hwnum,
+ const char *label);
void gpiochip_free_own_desc(struct gpio_desc *desc);
#else /* CONFIG_GPIOLIB */