Commit 4b46fbba authored by Ben Dooks's avatar Ben Dooks Committed by Kukjin Kim
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ARM: SAMSUNG: Add GPIO configuration for a range of pins 



Add s3c_gpio_cfgpin_range() to configure a range of pins to the given
value. This is useful for a number of blocks where the pins are in order
and saves multiple calls to s3c_gpio_cfgpin().

Signed-off-by: default avatarBen Dooks <ben-linux@fluff.org>
Signed-off-by: default avatarKukjin Kim <kgene.kim@samsung.com>
parent fe0cdec8

arch/arm/plat-samsung/gpio-config.c

+15 −0
Original line number Diff line number Diff line
@@ -41,6 +41,21 @@ int s3c_gpio_cfgpin(unsigned int pin, unsigned int config) 
}

EXPORT_SYMBOL(s3c_gpio_cfgpin);



int s3c_gpio_cfgpin_range(unsigned int start, unsigned int nr,

			  unsigned int cfg)

{

	int ret;



	for (; nr > 0; nr--, start++) {

		ret = s3c_gpio_cfgpin(start, cfg);

		if (ret != 0)

			return ret;

	}



	return 0;

}

EXPORT_SYMBOL_GPL(s3c_gpio_cfgpin_range);



unsigned s3c_gpio_getcfg(unsigned int pin)

{

	struct s3c_gpio_chip *chip = s3c_gpiolib_getchip(pin);

arch/arm/plat-samsung/include/plat/gpio-cfg.h

+13 −0
Original line number Diff line number Diff line
@@ -108,6 +108,19 @@ extern int s3c_gpio_cfgpin(unsigned int pin, unsigned int to); 
 */

extern unsigned s3c_gpio_getcfg(unsigned int pin);



/**

 * s3c_gpio_cfgpin_range() - Change the GPIO function for configuring pin range

 * @start: The pin number to start at

 * @nr: The number of pins to configure from @start.

 * @cfg: The configuration for the pin's function

 *

 * Call s3c_gpio_cfgpin() for the @nr pins starting at @start.

 *

 * @sa s3c_gpio_cfgpin.

 */

extern int s3c_gpio_cfgpin_range(unsigned int start, unsigned int nr,

				 unsigned int cfg);



/* Define values for the pull-{up,down} available for each gpio pin.

 *

 * These values control the state of the weak pull-{up,down} resistors