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[ARM] 4783/1: S3C24XX: Add s3c2410_gpio_getpull()

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Add the call s3c2410_gpio_getpull() to return the
current state of the pin's pull-up.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Ben Dooks 2008-01-28 13:01:23 +01:00 • committed by Russell King
commit bb6d9b56c1
2 changed files with 25 additions and 0 deletions
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12
include/asm-arm/arch-s3c2410/hardware.h
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@ -87,6 +87,18 @@ extern int s3c2410_gpio_irqfilter(unsigned int pin, unsigned int on,
extern void s3c2410_gpio_pullup(unsigned int pin, unsigned int to);
/* s3c2410_gpio_getpull
*
* Read the state of the pull-up on a given pin
*
* return:
* < 0 => error code
* 0 => enabled
* 1 => disabled
*/
extern int s3c2410_gpio_getpull(unsigned int pin);
extern void s3c2410_gpio_setpin(unsigned int pin, unsigned int to);
extern unsigned int s3c2410_gpio_getpin(unsigned int pin);