gpio7xx.c

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/*
 * OMAP7xx specific gpio init
 *
 * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
 *
 * Author:
 *  Charulatha V <[email protected]>
 *
 * 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 version 2.
 *
 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
 * kind, whether express or implied; without even the implied warranty
 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#include <linux/gpio.h>
#include <linux/platform_data/gpio-omap.h>

#define OMAP7XX_GPIO1_BASE      0xfffbc000
#define OMAP7XX_GPIO2_BASE      0xfffbc800
#define OMAP7XX_GPIO3_BASE      0xfffbd000
#define OMAP7XX_GPIO4_BASE      0xfffbd800
#define OMAP7XX_GPIO5_BASE      0xfffbe000
#define OMAP7XX_GPIO6_BASE      0xfffbe800
#define OMAP1_MPUIO_VBASE       OMAP1_MPUIO_BASE

/* mpu gpio */
static struct __initdata resource omap7xx_mpu_gpio_resources[] = {
    {
        .start  = OMAP1_MPUIO_VBASE,
        .end    = OMAP1_MPUIO_VBASE + SZ_2K - 1,
        .flags  = IORESOURCE_MEM,
    },
    {
        .start  = INT_7XX_MPUIO,
        .flags  = IORESOURCE_IRQ,
    },
};

static struct omap_gpio_reg_offs omap7xx_mpuio_regs = {
    .revision   = USHRT_MAX,
    .direction  = OMAP_MPUIO_IO_CNTL / 2,
    .datain     = OMAP_MPUIO_INPUT_LATCH / 2,
    .dataout    = OMAP_MPUIO_OUTPUT / 2,
    .irqstatus  = OMAP_MPUIO_GPIO_INT / 2,
    .irqenable  = OMAP_MPUIO_GPIO_MASKIT / 2,
    .irqenable_inv  = true,
    .irqctrl    = OMAP_MPUIO_GPIO_INT_EDGE >> 1,
};

static struct __initdata omap_gpio_platform_data omap7xx_mpu_gpio_config = {
    .is_mpuio       = true,
    .bank_width     = 16,
    .bank_stride        = 2,
    .regs                   = &omap7xx_mpuio_regs,
};

static struct platform_device omap7xx_mpu_gpio = {
    .name           = "omap_gpio",
    .id             = 0,
    .dev            = {
        .platform_data = &omap7xx_mpu_gpio_config,
    },
    .num_resources = ARRAY_SIZE(omap7xx_mpu_gpio_resources),
    .resource = omap7xx_mpu_gpio_resources,
};

/* gpio1 */
static struct __initdata resource omap7xx_gpio1_resources[] = {
    {
        .start  = OMAP7XX_GPIO1_BASE,
        .end    = OMAP7XX_GPIO1_BASE + SZ_2K - 1,
        .flags  = IORESOURCE_MEM,
    },
    {
        .start  = INT_7XX_GPIO_BANK1,
        .flags  = IORESOURCE_IRQ,
    },
};

static struct omap_gpio_reg_offs omap7xx_gpio_regs = {
    .revision   = USHRT_MAX,
    .direction  = OMAP7XX_GPIO_DIR_CONTROL,
    .datain     = OMAP7XX_GPIO_DATA_INPUT,
    .dataout    = OMAP7XX_GPIO_DATA_OUTPUT,
    .irqstatus  = OMAP7XX_GPIO_INT_STATUS,
    .irqenable  = OMAP7XX_GPIO_INT_MASK,
    .irqenable_inv  = true,
    .irqctrl    = OMAP7XX_GPIO_INT_CONTROL,
};

static struct __initdata omap_gpio_platform_data omap7xx_gpio1_config = {
    .bank_width     = 32,
    .regs           = &omap7xx_gpio_regs,
};

static struct platform_device omap7xx_gpio1 = {
    .name           = "omap_gpio",
    .id             = 1,
    .dev            = {
        .platform_data = &omap7xx_gpio1_config,
    },
    .num_resources = ARRAY_SIZE(omap7xx_gpio1_resources),
    .resource = omap7xx_gpio1_resources,
};

/* gpio2 */
static struct __initdata resource omap7xx_gpio2_resources[] = {
    {
        .start  = OMAP7XX_GPIO2_BASE,
        .end    = OMAP7XX_GPIO2_BASE + SZ_2K - 1,
        .flags  = IORESOURCE_MEM,
    },
    {
        .start  = INT_7XX_GPIO_BANK2,
        .flags  = IORESOURCE_IRQ,
    },
};

static struct __initdata omap_gpio_platform_data omap7xx_gpio2_config = {
    .bank_width     = 32,
    .regs           = &omap7xx_gpio_regs,
};

static struct platform_device omap7xx_gpio2 = {
    .name           = "omap_gpio",
    .id             = 2,
    .dev            = {
        .platform_data = &omap7xx_gpio2_config,
    },
    .num_resources = ARRAY_SIZE(omap7xx_gpio2_resources),
    .resource = omap7xx_gpio2_resources,
};

/* gpio3 */
static struct __initdata resource omap7xx_gpio3_resources[] = {
    {
        .start  = OMAP7XX_GPIO3_BASE,
        .end    = OMAP7XX_GPIO3_BASE + SZ_2K - 1,
        .flags  = IORESOURCE_MEM,
    },
    {
        .start  = INT_7XX_GPIO_BANK3,
        .flags  = IORESOURCE_IRQ,
    },
};

static struct __initdata omap_gpio_platform_data omap7xx_gpio3_config = {
    .bank_width     = 32,
    .regs           = &omap7xx_gpio_regs,
};

static struct platform_device omap7xx_gpio3 = {
    .name           = "omap_gpio",
    .id             = 3,
    .dev            = {
        .platform_data = &omap7xx_gpio3_config,
    },
    .num_resources = ARRAY_SIZE(omap7xx_gpio3_resources),
    .resource = omap7xx_gpio3_resources,
};

/* gpio4 */
static struct __initdata resource omap7xx_gpio4_resources[] = {
    {
        .start  = OMAP7XX_GPIO4_BASE,
        .end    = OMAP7XX_GPIO4_BASE + SZ_2K - 1,
        .flags  = IORESOURCE_MEM,
    },
    {
        .start  = INT_7XX_GPIO_BANK4,
        .flags  = IORESOURCE_IRQ,
    },
};

static struct __initdata omap_gpio_platform_data omap7xx_gpio4_config = {
    .bank_width     = 32,
    .regs           = &omap7xx_gpio_regs,
};

static struct platform_device omap7xx_gpio4 = {
    .name           = "omap_gpio",
    .id             = 4,
    .dev            = {
        .platform_data = &omap7xx_gpio4_config,
    },
    .num_resources = ARRAY_SIZE(omap7xx_gpio4_resources),
    .resource = omap7xx_gpio4_resources,
};

/* gpio5 */
static struct __initdata resource omap7xx_gpio5_resources[] = {
    {
        .start  = OMAP7XX_GPIO5_BASE,
        .end    = OMAP7XX_GPIO5_BASE + SZ_2K - 1,
        .flags  = IORESOURCE_MEM,
    },
    {
        .start  = INT_7XX_GPIO_BANK5,
        .flags  = IORESOURCE_IRQ,
    },
};

static struct __initdata omap_gpio_platform_data omap7xx_gpio5_config = {
    .bank_width     = 32,
    .regs           = &omap7xx_gpio_regs,
};

static struct platform_device omap7xx_gpio5 = {
    .name           = "omap_gpio",
    .id             = 5,
    .dev            = {
        .platform_data = &omap7xx_gpio5_config,
    },
    .num_resources = ARRAY_SIZE(omap7xx_gpio5_resources),
    .resource = omap7xx_gpio5_resources,
};

/* gpio6 */
static struct __initdata resource omap7xx_gpio6_resources[] = {
    {
        .start  = OMAP7XX_GPIO6_BASE,
        .end    = OMAP7XX_GPIO6_BASE + SZ_2K - 1,
        .flags  = IORESOURCE_MEM,
    },
    {
        .start  = INT_7XX_GPIO_BANK6,
        .flags  = IORESOURCE_IRQ,
    },
};

static struct __initdata omap_gpio_platform_data omap7xx_gpio6_config = {
    .bank_width     = 32,
    .regs           = &omap7xx_gpio_regs,
};

static struct platform_device omap7xx_gpio6 = {
    .name           = "omap_gpio",
    .id             = 6,
    .dev            = {
        .platform_data = &omap7xx_gpio6_config,
    },
    .num_resources = ARRAY_SIZE(omap7xx_gpio6_resources),
    .resource = omap7xx_gpio6_resources,
};

static struct __initdata platform_device * omap7xx_gpio_dev[] = {
    &omap7xx_mpu_gpio,
    &omap7xx_gpio1,
    &omap7xx_gpio2,
    &omap7xx_gpio3,
    &omap7xx_gpio4,
    &omap7xx_gpio5,
    &omap7xx_gpio6,
};

/*
 * omap7xx_gpio_init needs to be done before
 * machine_init functions access gpio APIs.
 * Hence omap7xx_gpio_init is a postcore_initcall.
 */
static int __init omap7xx_gpio_init(void)
{
    int i;

    if (!cpu_is_omap7xx())
        return -EINVAL;

    for (i = 0; i < ARRAY_SIZE(omap7xx_gpio_dev); i++)
        platform_device_register(omap7xx_gpio_dev[i]);

    return 0;
}
postcore_initcall(omap7xx_gpio_init);