Commit 5459148b authored by Ben Dooks's avatar Ben Dooks Committed by Kukjin Kim
Browse files

ARM: SAMSUNG: Add s3c_gpio_cfgall_range() function 



Add a function to configure a range of GPIOs function and
pull in one go, mainly for the SDHCI and framebuffer helpers
which tend to do this.

Signed-off-by: default avatarBen Dooks <ben-linux@fluff.org>
[kgene.kim@samsung.com: Fix small comments]
Signed-off-by: default avatarKukjin Kim <kgene.kim@samsung.com>
parent ce5d3ac1

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

+16 −0
Original line number Diff line number Diff line
@@ -56,6 +56,22 @@ int s3c_gpio_cfgpin_range(unsigned int start, unsigned int nr, 
}

EXPORT_SYMBOL_GPL(s3c_gpio_cfgpin_range);



int s3c_gpio_cfgall_range(unsigned int start, unsigned int nr,

			  unsigned int cfg, s3c_gpio_pull_t pull)

{

	int ret;



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

		s3c_gpio_setpull(start, pull);

		ret = s3c_gpio_cfgpin(start, cfg);

		if (ret != 0)

			return ret;

	}



	return 0;

}

EXPORT_SYMBOL_GPL(s3c_gpio_cfgall_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

+19 −0
Original line number Diff line number Diff line
@@ -153,6 +153,25 @@ extern int s3c_gpio_setpull(unsigned int pin, s3c_gpio_pull_t pull); 
*/

extern s3c_gpio_pull_t s3c_gpio_getpull(unsigned int pin);



/* configure `all` aspects of an gpio */



/**

 * s3c_gpio_cfgall_range() - configure range of gpio functtion and pull.

 * @start: The gpio number to start at.

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

 * @cfg: The configuration to use

 * @pull: The pull setting to use.

 *

 * Run s3c_gpio_cfgpin() and s3c_gpio_setpull() over the gpio range starting

 * @gpio and running for @size.

 *

 * @sa s3c_gpio_cfgpin

 * @sa s3c_gpio_setpull

 * @sa s3c_gpio_cfgpin_range

 */

extern int s3c_gpio_cfgall_range(unsigned int start, unsigned int nr,

				 unsigned int cfg, s3c_gpio_pull_t pull);



/* Define values for the drvstr available for each gpio pin.

 *

 * These values control the value of the output signal driver strength,