linux_dsm_epyc7002/arch/arm/mach-shmobile/sh-gpio.h
Rob Herring 6679185909 ARM: shmobile: move custom gpio functions to sh-gpio.h
Move custom shmobile gpio code to a sh-gpio.h to remove the dependency
on mach/gpio.h. shmobile always uses gpiolib, so we can remove
__GPIOLIB_COMPLEX define from mach/gpio.h.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Magnus Damm <magnus.damm@gmail.com>
2012-09-14 09:21:58 -05:00

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985 B
C

/*
* Generic GPIO API and pinmux table support
*
* Copyright (c) 2008 Magnus Damm
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#ifndef __ASM_ARCH_GPIO_H
#define __ASM_ARCH_GPIO_H
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/io.h>
/*
* 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 */