u-boot/include/asm-arm/arch-mx31/mx31.h
Guennadi Liakhovetski b30de3cccf i.MX31: add a simple gpio driver
This is a minimal driver, so far only managing output. It will
be used by the mxc_spi.c driver.

Signed-off-by: Guennadi Liakhovetski <lg@denx.de>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2009-02-24 09:43:10 +01:00

50 lines
1.5 KiB
C

/*
*
* (c) 2007 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#ifndef __ASM_ARCH_MX31_H
#define __ASM_ARCH_MX31_H
extern u32 mx31_get_ipg_clk(void);
extern void mx31_gpio_mux(unsigned long mode);
enum mx31_gpio_direction {
MX31_GPIO_DIRECTION_IN,
MX31_GPIO_DIRECTION_OUT,
};
#ifdef CONFIG_MX31_GPIO
extern int mx31_gpio_direction(unsigned int gpio,
enum mx31_gpio_direction direction);
extern void mx31_gpio_set(unsigned int gpio, unsigned int value);
#else
static inline int mx31_gpio_direction(unsigned int gpio,
enum mx31_gpio_direction direction)
{
return 1;
}
static inline void mx31_gpio_set(unsigned int gpio, unsigned int value)
{
}
#endif
#endif /* __ASM_ARCH_MX31_H */