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Commit 4f3d7f65 authored by Kuninori Morimoto's avatar Kuninori Morimoto Committed by Rafael J. Wysocki
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ARM: shmobile: add common extra gpio functions 



Current gpio frame work doesn't have the method to control
just pull up/down/free, but some SH-ARM boards need such kind of operation.
This patch adds common extra gpio functions for SH-ARM.

But these functions should be replaced by correct
gpio function in the future.

Signed-off-by: default avatarKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: default avatarMagnus Damm <damm@opensource.se>
Signed-off-by: default avatarRafael J. Wysocki <rjw@sisk.pl>
parent 485802a6

arch/arm/mach-shmobile/include/mach/gpio.h

+32 −0
Original line number Diff line number Diff line
@@ -13,6 +13,7 @@ 
#include <linux/kernel.h>

#include <linux/errno.h>

#include <linux/sh_pfc.h>

#include <linux/io.h>



#ifdef CONFIG_GPIOLIB
@@ -27,4 +28,35 @@ static inline int irq_to_gpio(unsigned int irq) 


#endif /* CONFIG_GPIOLIB */



/*

 * FIXME !!

 *

 * current gpio frame work doesn't have

 * the method to control only pull up/down/free.

 * this function should be replaced by correct gpio function

 */

static inline void __init gpio_direction_none(u32 addr)

{

	__raw_writeb(0x00, addr);

}



static inline void __init gpio_request_pullup(u32 addr)

{

	u8 data = __raw_readb(addr);



	data &= 0x0F;

	data |= 0xC0;

	__raw_writeb(data, addr);

}



static inline void __init gpio_request_pulldown(u32 addr)

{

	u8 data = __raw_readb(addr);



	data &= 0x0F;

	data |= 0xA0;



	__raw_writeb(data, addr);

}



#endif /* __ASM_ARCH_GPIO_H */