linux-imx

/*

 * GPIO driver for LPC32xx SoC

 *

 * 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.

 */

​

#include <linux/kernel.h>

#include <linux/init.h>

#include <linux/io.h>

#include <linux/errno.h>

#include <linux/gpio/driver.h>

#include <linux/of.h>

#include <linux/platform_device.h>

#include <linux/module.h>

​

#include <mach/hardware.h>

#include <mach/platform.h>

​

#define LPC32XX_GPIO_P3_INP_STATE       _GPREG(0x000)

#define LPC32XX_GPIO_P3_OUTP_SET        _GPREG(0x004)

#define LPC32XX_GPIO_P3_OUTP_CLR        _GPREG(0x008)

#define LPC32XX_GPIO_P3_OUTP_STATE      _GPREG(0x00C)

#define LPC32XX_GPIO_P2_DIR_SET         _GPREG(0x010)

#define LPC32XX_GPIO_P2_DIR_CLR         _GPREG(0x014)

#define LPC32XX_GPIO_P2_DIR_STATE       _GPREG(0x018)

#define LPC32XX_GPIO_P2_INP_STATE       _GPREG(0x01C)

#define LPC32XX_GPIO_P2_OUTP_SET        _GPREG(0x020)

#define LPC32XX_GPIO_P2_OUTP_CLR        _GPREG(0x024)

#define LPC32XX_GPIO_P2_MUX_SET         _GPREG(0x028)

#define LPC32XX_GPIO_P2_MUX_CLR         _GPREG(0x02C)

#define LPC32XX_GPIO_P2_MUX_STATE       _GPREG(0x030)

#define LPC32XX_GPIO_P0_INP_STATE       _GPREG(0x040)

#define LPC32XX_GPIO_P0_OUTP_SET        _GPREG(0x044)

#define LPC32XX_GPIO_P0_OUTP_CLR        _GPREG(0x048)

#define LPC32XX_GPIO_P0_OUTP_STATE      _GPREG(0x04C)

#define LPC32XX_GPIO_P0_DIR_SET         _GPREG(0x050)

#define LPC32XX_GPIO_P0_DIR_CLR         _GPREG(0x054)

#define LPC32XX_GPIO_P0_DIR_STATE       _GPREG(0x058)

#define LPC32XX_GPIO_P1_INP_STATE       _GPREG(0x060)

#define LPC32XX_GPIO_P1_OUTP_SET        _GPREG(0x064)

#define LPC32XX_GPIO_P1_OUTP_CLR        _GPREG(0x068)

#define LPC32XX_GPIO_P1_OUTP_STATE      _GPREG(0x06C)

#define LPC32XX_GPIO_P1_DIR_SET         _GPREG(0x070)

#define LPC32XX_GPIO_P1_DIR_CLR         _GPREG(0x074)

#define LPC32XX_GPIO_P1_DIR_STATE       _GPREG(0x078)

​

#define GPIO012_PIN_TO_BIT(x)           (1 << (x))

#define GPIO3_PIN_TO_BIT(x)         (1 << ((x) + 25))

#define GPO3_PIN_TO_BIT(x)          (1 << (x))

#define GPIO012_PIN_IN_SEL(x, y)        (((x) >> (y)) & 1)

#define GPIO3_PIN_IN_SHIFT(x)           ((x) == 5 ? 24 : 10 + (x))

#define GPIO3_PIN_IN_SEL(x, y)          (((x) >> GPIO3_PIN_IN_SHIFT(y)) & 1)

#define GPIO3_PIN5_IN_SEL(x)            (((x) >> 24) & 1)

#define GPI3_PIN_IN_SEL(x, y)           (((x) >> (y)) & 1)

#define GPO3_PIN_IN_SEL(x, y)           (((x) >> (y)) & 1)

​

#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)

​

struct gpio_regs {

    void __iomem *inp_state;

    void __iomem *outp_state;

    void __iomem *outp_set;

    void __iomem *outp_clr;

    void __iomem *dir_set;

    void __iomem *dir_clr;

};

​

/*