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/*
* DaVinci GPIO Platform Related Defines
*
* Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/
*
* 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 version 2.
*
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
* kind, whether express or implied; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __DAVINCI_GPIO_PLATFORM_H
#define __DAVINCI_GPIO_PLATFORM_H
#include <linux/io.h>
#include <linux/spinlock.h>
#include <asm-generic/gpio.h>
#define MAX_REGS_BANKS 5
struct davinci_gpio_platform_data {
u32 ngpio;
u32 gpio_unbanked;
};
struct davinci_gpio_irq_data {
void __iomem *regs;
struct davinci_gpio_controller *chip;
int bank_num;
};
struct davinci_gpio_controller {
struct gpio_chip chip;
struct irq_domain *irq_domain;
/* Serialize access to GPIO registers */
spinlock_t lock;
void __iomem *regs[MAX_REGS_BANKS];
int gpio_unbanked;
unsigned int base_irq;
unsigned int base;
};
/*
* basic gpio routines
*/
#define GPIO(X) (X) /* 0 <= X <= (DAVINCI_N_GPIO - 1) */
/* Convert GPIO signal to GPIO pin number */
#define GPIO_TO_PIN(bank, gpio) (16 * (bank) + (gpio))
static inline u32 __gpio_mask(unsigned gpio)
{
return 1 << (gpio % 32);
}
#endif
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