arch/arm/mach-tegra/include/mach/gpio.h

   1 /*
   2  * arch/arm/mach-tegra/include/mach/gpio.h
   3  *
   4  * Copyright (C) 2010 Google, Inc.
   5  *
   6  * Author:
   7  *      Erik Gilling <konkers@google.com>
   8  *
   9  * This software is licensed under the terms of the GNU General Public
  10  * License version 2, as published by the Free Software Foundation, and
  11  * may be copied, distributed, and modified under those terms.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  */
  19
  20 #ifndef __MACH_TEGRA_GPIO_H
  21 #define __MACH_TEGRA_GPIO_H
  22
  23 #include <linux/init.h>
  24 #include <mach/irqs.h>
  25
  26 #define TEGRA_NR_GPIOS          INT_GPIO_NR
  27
  28 #include <asm-generic/gpio.h>
  29
  30 #define gpio_get_value          __gpio_get_value
  31 #define gpio_set_value          __gpio_set_value
  32 #define gpio_cansleep           __gpio_cansleep
  33
  34 #define TEGRA_GPIO_TO_IRQ(gpio) (INT_GPIO_BASE + (gpio))
  35 #define TEGRA_IRQ_TO_GPIO(irq) ((irq) - INT_GPIO_BASE)
  36
  37 static inline int gpio_to_irq(unsigned int gpio)
  38 {
  39         if (gpio < TEGRA_NR_GPIOS)
  40                 return INT_GPIO_BASE + gpio;
  41         return -EINVAL;
  42 }
  43
  44 static inline int irq_to_gpio(unsigned int irq)
  45 {
  46         if ((irq >= INT_GPIO_BASE) && (irq < INT_GPIO_BASE + INT_GPIO_NR))
  47                 return irq - INT_GPIO_BASE;
  48         return -EINVAL;
  49 }
  50
  51 struct tegra_gpio_table {
  52         int     gpio;   /* GPIO number */
  53         bool    enable; /* Enable for GPIO at init? */
  54 };
  55
  56 void tegra_gpio_config(struct tegra_gpio_table *table, int num);
  57 void tegra_gpio_enable(int gpio);
  58 void tegra_gpio_disable(int gpio);
  59
  60 #endif