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kernel/linux-rt-4.4.41/include/linux/platform_data/gpio-lpc32xx.h 1.69 KB
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  /*
   * Author: Kevin Wells <kevin.wells@nxp.com>
   *
   * Copyright (C) 2010 NXP Semiconductors
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation; either version 2 of the License, or
   * (at your option) any later version.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   */
  
  #ifndef __MACH_GPIO_LPC32XX_H
  #define __MACH_GPIO_LPC32XX_H
  
  /*
   * Note!
   * Muxed GP pins need to be setup to the GP state in the board level
   * code prior to using this driver.
   * GPI pins : 28xP3 group
   * GPO pins : 24xP3 group
   * GPIO pins: 8xP0 group, 24xP1 group, 13xP2 group, 6xP3 group
   */
  
  #define LPC32XX_GPIO_P0_MAX 8
  #define LPC32XX_GPIO_P1_MAX 24
  #define LPC32XX_GPIO_P2_MAX 13
  #define LPC32XX_GPIO_P3_MAX 6
  #define LPC32XX_GPI_P3_MAX 29
  #define LPC32XX_GPO_P3_MAX 24
  
  #define LPC32XX_GPIO_P0_GRP 0
  #define LPC32XX_GPIO_P1_GRP (LPC32XX_GPIO_P0_GRP + LPC32XX_GPIO_P0_MAX)
  #define LPC32XX_GPIO_P2_GRP (LPC32XX_GPIO_P1_GRP + LPC32XX_GPIO_P1_MAX)
  #define LPC32XX_GPIO_P3_GRP (LPC32XX_GPIO_P2_GRP + LPC32XX_GPIO_P2_MAX)
  #define LPC32XX_GPI_P3_GRP (LPC32XX_GPIO_P3_GRP + LPC32XX_GPIO_P3_MAX)
  #define LPC32XX_GPO_P3_GRP (LPC32XX_GPI_P3_GRP + LPC32XX_GPI_P3_MAX)
  
  /*
   * A specific GPIO can be selected with this macro
   * ie, GPIO_05 can be selected with LPC32XX_GPIO(LPC32XX_GPIO_P3_GRP, 5)
   * See the LPC32x0 User's guide for GPIO group numbers
   */
  #define LPC32XX_GPIO(x, y) ((x) + (y))
  
  #endif /* __MACH_GPIO_LPC32XX_H */