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Commit c27cb681 authored by Ben Dooks's avatar Ben Dooks Committed by Russell King
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[ARM] 4793/1: S3C24XX: Add IRQ->GPIO pin mapping function



Add the reverse of s3c2410_gpio_getirq to convert
a IRQ  number into a GPIO pin number.

Signed-off-by: default avatarBen Dooks <ben-linux@fluff.org>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 9b8c0088
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+16 −0
Original line number Original line Diff line number Diff line
@@ -199,3 +199,19 @@ int s3c2410_gpio_getirq(unsigned int pin)
}
}


EXPORT_SYMBOL(s3c2410_gpio_getirq);
EXPORT_SYMBOL(s3c2410_gpio_getirq);

int s3c2410_gpio_irq2pin(unsigned int irq)
{
	if (irq >= IRQ_EINT0 && irq <= IRQ_EINT3)
		return S3C2410_GPF0 + (irq - IRQ_EINT0);

	if (irq >= IRQ_EINT4 && irq <= IRQ_EINT7)
		return S3C2410_GPF4 + (irq - IRQ_EINT4);

	if (irq >= IRQ_EINT8 && irq <= IRQ_EINT23)
		return S3C2410_GPG0 + (irq - IRQ_EINT8);

	return -EINVAL;
}

EXPORT_SYMBOL(s3c2410_gpio_irq2pin);
+11 −0
Original line number Original line Diff line number Diff line
@@ -50,6 +50,17 @@ extern unsigned int s3c2410_gpio_getcfg(unsigned int pin);


extern int s3c2410_gpio_getirq(unsigned int pin);
extern int s3c2410_gpio_getirq(unsigned int pin);


/* s3c2410_gpio_irq2pin
 *
 * turn the given irq number into the corresponding GPIO number
 *
 * returns:
 *	< 0 = no pin
 *	>=0 = gpio pin number
*/

extern int s3c2410_gpio_irq2pin(unsigned int irq);

#ifdef CONFIG_CPU_S3C2400
#ifdef CONFIG_CPU_S3C2400


extern int s3c2400_gpio_getirq(unsigned int pin);
extern int s3c2400_gpio_getirq(unsigned int pin);