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Linux kernel mirror (for testing)
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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
24#define MAX_REGS_BANKS 5
25#define MAX_INT_PER_BANK 32
26
27struct davinci_gpio_platform_data {
28 u32 ngpio;
29 u32 gpio_unbanked;
30};
31
32struct davinci_gpio_irq_data {
33 void __iomem *regs;
34 struct davinci_gpio_controller *chip;
35 int bank_num;
36};
37
38struct davinci_gpio_controller {
39 struct gpio_chip chip;
40 struct irq_domain *irq_domain;
41 /* Serialize access to GPIO registers */
42 spinlock_t lock;
43 void __iomem *regs[MAX_REGS_BANKS];
44 int gpio_unbanked;
45 int irqs[MAX_INT_PER_BANK];
46 unsigned int base;
47};
48
49/*
50 * basic gpio routines
51 */
52#define GPIO(X) (X) /* 0 <= X <= (DAVINCI_N_GPIO - 1) */
53
54/* Convert GPIO signal to GPIO pin number */
55#define GPIO_TO_PIN(bank, gpio) (16 * (bank) + (gpio))
56
57static inline u32 __gpio_mask(unsigned gpio)
58{
59 return 1 << (gpio % 32);
60}
61#endif