2 * Copyright (c) 2009 Wind River Systems, Inc.
3 * Tom Rix <Tom.Rix@windriver.com>
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.
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.
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,
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.
25 * Below is the original's header including its copyright
27 * linux/arch/arm/plat-omap/gpio.c
29 * Support functions for OMAP GPIO
31 * Copyright (C) 2003-2005 Nokia Corporation
32 * Written by Juha Yrjölä <juha.yrjola@nokia.com>
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.
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
71 #define METHOD_GPIO_24XX 4
73 /* This is the interface */
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);