LXR linux/include/linux/platform

   1/*
   2 * DaVinci GPIO Platform Related Defines
   3 *
   4 * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/
   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 version 2.
   9 *
  10 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
  11 * kind, whether express or implied; without even the implied warranty
  12 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 * GNU General Public License for more details.
  14 */
  15
  16#ifndef __DAVINCI_GPIO_PLATFORM_H
  17#define __DAVINCI_GPIO_PLATFORM_H
  18
  19#include <linux/io.h>
  20#include <linux/spinlock.h>
  21
  22#include <asm-generic/gpio.h>
  23
  24struct davinci_gpio_platform_data {
  25        u32     ngpio;
  26        u32     gpio_unbanked;
  27};
  28
  29
  30struct davinci_gpio_controller {
  31        struct gpio_chip        chip;
  32        struct irq_domain       *irq_domain;
  33        /* Serialize access to GPIO registers */
  34        spinlock_t              lock;
  35        void __iomem            *regs;
  36        void __iomem            *set_data;
  37        void __iomem            *clr_data;
  38        void __iomem            *in_data;
  39        int                     gpio_unbanked;
  40        unsigned                gpio_irq;
  41};
  42
  43/*
  44 * basic gpio routines
  45 */
  46#define GPIO(X)         (X)     /* 0 <= X <= (DAVINCI_N_GPIO - 1) */
  47
  48/* Convert GPIO signal to GPIO pin number */
  49#define GPIO_TO_PIN(bank, gpio) (16 * (bank) + (gpio))
  50
  51static inline u32 __gpio_mask(unsigned gpio)
  52{
  53        return 1 << (gpio % 32);
  54}
  55#endif
  56