2 * DaVinci GPIO Platform Related Defines
4 * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/
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.
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.
16 #ifndef __DAVINCI_GPIO_PLATFORM_H
17 #define __DAVINCI_GPIO_PLATFORM_H
20 #include <linux/spinlock.h>
22 #include <asm-generic/gpio.h>
24 #define MAX_REGS_BANKS 5
25 #define MAX_INT_PER_BANK 32
27 struct davinci_gpio_platform_data {
32 struct davinci_gpio_irq_data {
34 struct davinci_gpio_controller *chip;
38 struct davinci_gpio_controller {
39 struct gpio_chip chip;
40 struct irq_domain *irq_domain;
41 /* Serialize access to GPIO registers */
43 void __iomem *regs[MAX_REGS_BANKS];
45 int irqs[MAX_INT_PER_BANK];
52 #define GPIO(X) (X) /* 0 <= X <= (DAVINCI_N_GPIO - 1) */
54 /* Convert GPIO signal to GPIO pin number */
55 #define GPIO_TO_PIN(bank, gpio) (16 * (bank) + (gpio))
57 static inline u32 __gpio_mask(unsigned gpio)
59 return 1 << (gpio % 32);