arch/arm/include/asm/arch-omap3/gpio.h

   1 /*
   2  * Copyright (c) 2009 Wind River Systems, Inc.
   3  * Tom Rix <Tom.Rix@windriver.com>
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License as
   7  * published by the Free Software Foundation; either version 2 of
   8  * the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  18  * MA 02111-1307 USA
  19  *
  20  * This work is derived from the linux 2.6.27 kernel source
  21  * To fetch, use the kernel repository
  22  * git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
  23  * Use the v2.6.27 tag.
  24  *
  25  * Below is the original's header including its copyright
  26  *
  27  *  linux/arch/arm/plat-omap/gpio.c
  28  *
  29  * Support functions for OMAP GPIO
  30  *
  31  * Copyright (C) 2003-2005 Nokia Corporation
  32  * Written by Juha Yrjölä <juha.yrjola@nokia.com>
  33  *
  34  * This program is free software; you can redistribute it and/or modify
  35  * it under the terms of the GNU General Public License version 2 as
  36  * published by the Free Software Foundation.
  37  */
  38 #ifndef _GPIO_H
  39 #define _GPIO_H
  40
  41 #define OMAP24XX_GPIO_REVISION          0x0000
  42 #define OMAP24XX_GPIO_SYSCONFIG         0x0010
  43 #define OMAP24XX_GPIO_SYSSTATUS         0x0014
  44 #define OMAP24XX_GPIO_IRQSTATUS1        0x0018
  45 #define OMAP24XX_GPIO_IRQSTATUS2        0x0028
  46 #define OMAP24XX_GPIO_IRQENABLE2        0x002c
  47 #define OMAP24XX_GPIO_IRQENABLE1        0x001c
  48 #define OMAP24XX_GPIO_WAKE_EN           0x0020
  49 #define OMAP24XX_GPIO_CTRL              0x0030
  50 #define OMAP24XX_GPIO_OE                0x0034
  51 #define OMAP24XX_GPIO_DATAIN            0x0038
  52 #define OMAP24XX_GPIO_DATAOUT           0x003c
  53 #define OMAP24XX_GPIO_LEVELDETECT0      0x0040
  54 #define OMAP24XX_GPIO_LEVELDETECT1      0x0044
  55 #define OMAP24XX_GPIO_RISINGDETECT      0x0048
  56 #define OMAP24XX_GPIO_FALLINGDETECT     0x004c
  57 #define OMAP24XX_GPIO_DEBOUNCE_EN       0x0050
  58 #define OMAP24XX_GPIO_DEBOUNCE_VAL      0x0054
  59 #define OMAP24XX_GPIO_CLEARIRQENABLE1   0x0060
  60 #define OMAP24XX_GPIO_SETIRQENABLE1     0x0064
  61 #define OMAP24XX_GPIO_CLEARWKUENA       0x0080
  62 #define OMAP24XX_GPIO_SETWKUENA         0x0084
  63 #define OMAP24XX_GPIO_CLEARDATAOUT      0x0090
  64 #define OMAP24XX_GPIO_SETDATAOUT        0x0094
  65
  66 struct gpio_bank {
  67         void *base;
  68         int method;
  69 };
  70
  71 #define METHOD_GPIO_24XX        4
  72
  73 /* This is the interface */
  74
  75 /* Request a gpio before using it */
  76 int omap_request_gpio(int gpio);
  77 /* Reset and free a gpio after using it */
  78 void omap_free_gpio(int gpio);
  79 /* Sets the gpio as input or output */
  80 void omap_set_gpio_direction(int gpio, int is_input);
  81 /* Set or clear a gpio output */
  82 void omap_set_gpio_dataout(int gpio, int enable);
  83 /* Get the value of a gpio input */
  84 int omap_get_gpio_datain(int gpio);
  85
  86 #endif /* _GPIO_H_ */