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

   1 /*
   2  * Copyright (c) 2011, Google Inc. All rights reserved.
   3  * See file CREDITS for list of people who contributed to this
   4  * project.
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License as
   8  * published by the Free Software Foundation; either version 2 of
   9  * the License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  19  * MA 02111-1307 USA
  20  */
  21
  22 #ifndef _TEGRA_GPIO_H_
  23 #define _TEGRA_GPIO_H_
  24
  25 #define MAX_NUM_GPIOS           (TEGRA_GPIO_PORTS * TEGRA_GPIO_BANKS * 8)
  26 #define GPIO_NAME_SIZE          20      /* gpio_request max label len */
  27
  28 #define GPIO_BANK(x)            ((x) >> 5)
  29 #define GPIO_PORT(x)            (((x) >> 3) & 0x3)
  30 #define GPIO_FULLPORT(x)        ((x) >> 3)
  31 #define GPIO_BIT(x)             ((x) & 0x7)
  32
  33 /*
  34  * Tegra-specific GPIO API
  35  */
  36
  37 void gpio_info(void);
  38
  39 #define gpio_status()   gpio_info()
  40 #endif  /* TEGRA_GPIO_H_ */