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Commit 67d729ad authored by Ben Dooks's avatar Ben Dooks Committed by Russell King
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[ARM] 4779/1: S3C2412: Add s3c2412_gpio_set_sleepcfg() call 



Add s3c2412_gpio_set_sleepcfg() to allow the setting of the sleep
configuration of the GPIO blocks.

Signed-off-by: default avatarBen Dooks <ben-linux@fluff.org>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent bdbea34d

arch/arm/mach-s3c2412/Makefile

+1 −0
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@@ -12,6 +12,7 @@ obj- := 
obj-$(CONFIG_CPU_S3C2412)	+= s3c2412.o

obj-$(CONFIG_CPU_S3C2412)	+= irq.o

obj-$(CONFIG_CPU_S3C2412)	+= clock.o

obj-$(CONFIG_CPU_S3C2412)	+= gpio.o

obj-$(CONFIG_S3C2412_DMA)	+= dma.o

obj-$(CONFIG_S3C2412_PM)	+= pm.o sleep.o

arch/arm/mach-s3c2412/gpio.c

0 → 100644
+60 −0
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/* linux/arch/arm/mach-s3c2412/gpio.c

 *

 * Copyright (c) 2007 Simtec Electronics

 *	Ben Dooks <ben@simtec.co.uk>

 *

 * http://armlinux.simtec.co.uk/.

 *

 * S3C2412/S3C2413 specific GPIO support

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

*/



#include <linux/kernel.h>

#include <linux/types.h>

#include <linux/module.h>

#include <linux/interrupt.h>



#include <asm/mach/arch.h>

#include <asm/mach/map.h>



#include <asm/arch/regs-gpio.h>



#include <asm/hardware.h>



int s3c2412_gpio_set_sleepcfg(unsigned int pin, unsigned int state)

{

	void __iomem *base = S3C24XX_GPIO_BASE(pin);

	unsigned long offs = S3C2410_GPIO_OFFSET(pin);

	unsigned long flags;

	unsigned long slpcon;



	offs *= 2;



	if (pin < S3C2410_GPIO_BANKB)

		return -EINVAL;



	if (pin >= S3C2410_GPIO_BANKF &&

	    pin <= S3C2410_GPIO_BANKG)

		return -EINVAL;



	if (pin > (S3C2410_GPIO_BANKH + 32))

		return -EINVAL;



	local_irq_save(flags);



	slpcon = __raw_readl(base + 0x0C);



	slpcon &= ~(3 << offs);

	slpcon |= state << offs;



	__raw_writel(slpcon, base + 0x0C);



	local_irq_restore(flags);



	return 0;

}



EXPORT_SYMBOL(s3c2412_gpio_set_sleepcfg);

include/asm-arm/arch-s3c2410/hardware.h

+5 −0
Original line number Diff line number Diff line
@@ -99,6 +99,11 @@ extern int s3c2440_set_dsc(unsigned int pin, unsigned int value); 


#endif /* CONFIG_CPU_S3C2440 */



#ifdef CONFIG_CPU_S3C2412



extern int s3c2412_gpio_set_sleepcfg(unsigned int pin, unsigned int state);



#endif /* CONFIG_CPU_S3C2412 */



#endif /* __ASSEMBLY__ */

include/asm-arm/arch-s3c2410/regs-gpio.h

+5 −0
Original line number Diff line number Diff line
@@ -1138,6 +1138,11 @@ 
#define S3C2412_GPHSLPCON	S3C2410_GPIOREG(0x7C)



/* definitions for each pin bit */

#define S3C2412_GPIO_SLPCON_LOW	 ( 0x00 )

#define S3C2412_GPIO_SLPCON_HIGH ( 0x01 )

#define S3C2412_GPIO_SLPCON_IN   ( 0x02 )

#define S3C2412_GPIO_SLPCON_PULL ( 0x03 )



#define S3C2412_SLPCON_LOW(x)	( 0x00 << ((x) * 2))

#define S3C2412_SLPCON_HIGH(x)	( 0x01 << ((x) * 2))

#define S3C2412_SLPCON_IN(x)	( 0x02 << ((x) * 2))