sys/arch/arm/omap/omap_gpio.h

   1 /*
   2  * The OMAP GPIO Controller interface is inspired by pxa2x0_gpio.h
   3  *
   4  * Copyright 2003 Wasabi Systems, Inc.
   5  * All rights reserved.
   6  *
   7  * Written by Steve C. Woodford for Wasabi Systems, Inc.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  * 3. All advertising materials mentioning features or use of this software
  18  *    must display the following acknowledgement:
  19  *      This product includes software developed for the NetBSD Project by
  20  *      Wasabi Systems, Inc.
  21  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
  22  *    or promote products derived from this software without specific prior
  23  *    written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
  26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
  29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  35  * POSSIBILITY OF SUCH DAMAGE.
  36  */
  37
  38 #ifndef _ARM_OMAP_OMAP_GPIO_H_
  39 #define _ARM_OMAP_OMAP_GPIO_H_
  40
  41 #define GPIO_IN         0x00
  42 #define GPIO_OUT        0x01
  43 #define GPIO_IS_IN(n)   (((n) & GPIO_OUT) == GPIO_IN)
  44 #define GPIO_IS_OUT(n)  (((n) & GPIO_OUT) == GPIO_OUT)
  45
  46 /*
  47  * GPIO pin function query/manipulation functions
  48  */
  49 extern u_int omap_gpio_get_direction(u_int);
  50 extern void omap_gpio_set_direction(u_int, u_int);
  51
  52 /*
  53  * Establish/Disestablish interrupt handlers for GPIO pins
  54  */
  55 extern void *omap_gpio_intr_establish(u_int, int, int,
  56      const char *, int (*)(void *), void *);
  57 extern void omap_gpio_intr_disestablish(void *);
  58
  59 /* Mask/unmask GPIO interrupt, enable/disable sleep wakeups */
  60
  61 extern void omap_gpio_intr_mask(void *);
  62 extern void omap_gpio_intr_unmask(void *);
  63 extern void omap_gpio_intr_wakeup(void *cookie, int enable);
  64
  65 /*
  66  * Read/write
  67  */
  68
  69 extern u_int omap_gpio_read(u_int gpio);
  70 extern void omap_gpio_write(u_int, u_int);
  71
  72 #endif /* _ARM_OMAP_OMAP_GPIO_H_ */