1/*
2 * DaVinci GPIO Platform Related Defines
3 *
4 * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation version 2.
9 *
10 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
11 * kind, whether express or implied; without even the implied warranty
12 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13 * GNU General Public License for more details.
14 */
15
16#ifndef __DAVINCI_GPIO_PLATFORM_H
17#define __DAVINCI_GPIO_PLATFORM_H
18
19#include <linux/io.h>
20#include <linux/spinlock.h>
21
22#include <asm-generic/gpio.h>
23
24struct davinci_gpio_platform_data {
25	u32	ngpio;
26	u32	gpio_unbanked;
27};
28
29
30struct davinci_gpio_controller {
31	struct gpio_chip	chip;
32	struct irq_domain	*irq_domain;
33	/* Serialize access to GPIO registers */
34	spinlock_t		lock;
35	void __iomem		*regs;
36	void __iomem		*set_data;
37	void __iomem		*clr_data;
38	void __iomem		*in_data;
39	int			gpio_unbanked;
40	unsigned		gpio_irq;
41};
42
43/*
44 * basic gpio routines
45 */
46#define	GPIO(X)		(X)	/* 0 <= X <= (DAVINCI_N_GPIO - 1) */
47
48/* Convert GPIO signal to GPIO pin number */
49#define GPIO_TO_PIN(bank, gpio)	(16 * (bank) + (gpio))
50
51static inline u32 __gpio_mask(unsigned gpio)
52{
53	return 1 << (gpio % 32);
54}
55#endif
56