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

   1 /*
   2  * linux/include/asm-arm/arch-omap/gpio.h
   3  *
   4  * OMAP GPIO handling defines and functions
   5  *
   6  * Copyright (C) 2003 Nokia Corporation
   7  *
   8  * Written by Juha Yrjölä <juha.yrjola@nokia.com>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  23  *
  24  */
  25
  26 #ifndef __ASM_ARCH_OMAP_GPIO_H
  27 #define __ASM_ARCH_OMAP_GPIO_H
  28
  29 #include <asm/arch/hardware.h>
  30 #include <asm/arch/irqs.h>
  31 #include <asm/io.h>
  32
  33 #define OMAP_MPUIO_BASE                 0xfffb5000
  34 #define OMAP_MPUIO_INPUT_LATCH          0x00
  35 #define OMAP_MPUIO_OUTPUT               0x04
  36 #define OMAP_MPUIO_IO_CNTL              0x08
  37 #define OMAP_MPUIO_KBR_LATCH            0x10
  38 #define OMAP_MPUIO_KBC                  0x14
  39 #define OMAP_MPUIO_GPIO_EVENT_MODE      0x18
  40 #define OMAP_MPUIO_GPIO_INT_EDGE        0x1c
  41 #define OMAP_MPUIO_KBD_INT              0x20
  42 #define OMAP_MPUIO_GPIO_INT             0x24
  43 #define OMAP_MPUIO_KBD_MASKIT           0x28
  44 #define OMAP_MPUIO_GPIO_MASKIT          0x2c
  45 #define OMAP_MPUIO_GPIO_DEBOUNCING      0x30
  46 #define OMAP_MPUIO_LATCH                0x34
  47
  48 #define OMAP_MPUIO(nr)          (OMAP_MAX_GPIO_LINES + (nr))
  49 #define OMAP_GPIO_IS_MPUIO(nr)  ((nr) >= OMAP_MAX_GPIO_LINES)
  50
  51 #define OMAP_GPIO_IRQ(nr)       (OMAP_GPIO_IS_MPUIO(nr) ? \
  52                                  IH_MPUIO_BASE + ((nr) & 0x0f) : \
  53                                  IH_GPIO_BASE + ((nr) & 0x3f))
  54
  55 /* For EDGECTRL */
  56 #define OMAP_GPIO_NO_EDGE         0x00
  57 #define OMAP_GPIO_FALLING_EDGE    0x01
  58 #define OMAP_GPIO_RISING_EDGE     0x02
  59 #define OMAP_GPIO_BOTH_EDGES      0x03
  60
  61 extern int omap_gpio_init(void);        /* Call from board init only */
  62 extern int omap_request_gpio(int gpio);
  63 extern void omap_free_gpio(int gpio);
  64 extern void omap_set_gpio_direction(int gpio, int is_input);
  65 extern void omap_set_gpio_dataout(int gpio, int enable);
  66 extern int omap_get_gpio_datain(int gpio);
  67 extern void omap_set_gpio_edge_ctrl(int gpio, int edge);
  68
  69 #endif