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dm: gpio: Add gpio_requestf() helper for printf() strings

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Add a helper which permits a printf()-style format string for the requester
string.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2014-10-04 11:29:49 -06:00
parent 4b8f11c2cc
commit d44f597b12
4 changed files with 51 additions and 1 deletions
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10
include/asm-generic/gpio.h
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@ -145,6 +145,16 @@ int gpio_get_function(struct udevice *dev, int offset, const char **namep);
*/
int gpio_get_raw_function(struct udevice *dev, int offset, const char **namep);
/**
* gpio_requestf() - request a GPIO using a format string for the owner
*
* This is a helper function for gpio_request(). It allows you to provide
* a printf()-format string for the GPIO owner. It calls gpio_request() with
* the string that is created
*/
int gpio_requestf(unsigned gpio, const char *fmt, ...)
__attribute__ ((format (__printf__, 2, 3)));
/**
* struct struct dm_gpio_ops - Driver model GPIO operations
*