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/*
* Copyright 2007 Freescale Semiconductor, Inc. All Rights Reserved.
* Copyright 2008 Juergen Beisert, kernel@pengutronix.de
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef __ASM_ARCH_MXC_GPIO_H__
#define __ASM_ARCH_MXC_GPIO_H__
#include <linux/spinlock.h>
#include <mach/hardware.h>
#include <asm-generic/gpio.h>
/* There's a off-by-one betweem the gpio bank number and the gpiochip */
/* range e.g. GPIO_1_5 is gpio 5 under linux */
#define IMX_GPIO_NR(bank, nr) (((bank) - 1) * 32 + (nr))
/* use gpiolib dispatchers */
#define gpio_get_value __gpio_get_value
#define gpio_set_value __gpio_set_value
#define gpio_cansleep __gpio_cansleep
#define gpio_to_irq(gpio) (MXC_GPIO_IRQ_START + (gpio))
#define irq_to_gpio(irq) ((irq) - MXC_GPIO_IRQ_START)
struct mxc_gpio_port {
void __iomem *base;
int irq;
int irq_high;
int virtual_irq_start;
struct gpio_chip chip;
u32 both_edges;
spinlock_t lock;
};
#define DEFINE_IMX_GPIO_PORT_IRQ_HIGH(soc, _id, _hwid, _irq, _irq_high) \
{ \
.chip.label = "gpio-" #_id, \
.irq = _irq, \
.irq_high = _irq_high, \
.base = soc ## _IO_ADDRESS( \
soc ## _GPIO ## _hwid ## _BASE_ADDR), \
.virtual_irq_start = MXC_GPIO_IRQ_START + (_id) * 32, \
}
#define DEFINE_IMX_GPIO_PORT_IRQ(soc, _id, _hwid, _irq) \
DEFINE_IMX_GPIO_PORT_IRQ_HIGH(soc, _id, _hwid, _irq, 0)
#define DEFINE_IMX_GPIO_PORT(soc, _id, _hwid) \
DEFINE_IMX_GPIO_PORT_IRQ(soc, _id, _hwid, 0)
int mxc_gpio_init(struct mxc_gpio_port*, int);
#endif
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