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0c872ecd01
Port version 2.6.27 of the linux kernel's omap gpio interface to u-boot. The orignal source is in linux/arch/arm/plat-omap/gpio.c See doc/README.omap3 for instructions on use. Signed-off-by: Tom Rix <Tom.Rix@windriver.com>
87 lines
2.9 KiB
C
87 lines
2.9 KiB
C
/*
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* Copyright (c) 2009 Wind River Systems, Inc.
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* Tom Rix <Tom.Rix@windriver.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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* This work is derived from the linux 2.6.27 kernel source
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* To fetch, use the kernel repository
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* git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
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* Use the v2.6.27 tag.
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*
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* Below is the original's header including its copyright
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*
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* linux/arch/arm/plat-omap/gpio.c
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*
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* Support functions for OMAP GPIO
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*
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* Copyright (C) 2003-2005 Nokia Corporation
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* Written by Juha Yrjölä <juha.yrjola@nokia.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef _GPIO_H
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#define _GPIO_H
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#define OMAP24XX_GPIO_REVISION 0x0000
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#define OMAP24XX_GPIO_SYSCONFIG 0x0010
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#define OMAP24XX_GPIO_SYSSTATUS 0x0014
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#define OMAP24XX_GPIO_IRQSTATUS1 0x0018
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#define OMAP24XX_GPIO_IRQSTATUS2 0x0028
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#define OMAP24XX_GPIO_IRQENABLE2 0x002c
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#define OMAP24XX_GPIO_IRQENABLE1 0x001c
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#define OMAP24XX_GPIO_WAKE_EN 0x0020
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#define OMAP24XX_GPIO_CTRL 0x0030
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#define OMAP24XX_GPIO_OE 0x0034
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#define OMAP24XX_GPIO_DATAIN 0x0038
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#define OMAP24XX_GPIO_DATAOUT 0x003c
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#define OMAP24XX_GPIO_LEVELDETECT0 0x0040
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#define OMAP24XX_GPIO_LEVELDETECT1 0x0044
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#define OMAP24XX_GPIO_RISINGDETECT 0x0048
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#define OMAP24XX_GPIO_FALLINGDETECT 0x004c
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#define OMAP24XX_GPIO_DEBOUNCE_EN 0x0050
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#define OMAP24XX_GPIO_DEBOUNCE_VAL 0x0054
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#define OMAP24XX_GPIO_CLEARIRQENABLE1 0x0060
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#define OMAP24XX_GPIO_SETIRQENABLE1 0x0064
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#define OMAP24XX_GPIO_CLEARWKUENA 0x0080
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#define OMAP24XX_GPIO_SETWKUENA 0x0084
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#define OMAP24XX_GPIO_CLEARDATAOUT 0x0090
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#define OMAP24XX_GPIO_SETDATAOUT 0x0094
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struct gpio_bank {
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void *base;
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int method;
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};
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#define METHOD_GPIO_24XX 4
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/* This is the interface */
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/* Request a gpio before using it */
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int omap_request_gpio(int gpio);
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/* Reset and free a gpio after using it */
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void omap_free_gpio(int gpio);
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/* Sets the gpio as input or output */
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void omap_set_gpio_direction(int gpio, int is_input);
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/* Set or clear a gpio output */
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void omap_set_gpio_dataout(int gpio, int enable);
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/* Get the value of a gpio input */
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int omap_get_gpio_datain(int gpio);
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#endif /* _GPIO_H_ */
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