board-nokia770.c

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/*
 * linux/arch/arm/mach-omap1/board-nokia770.c
 *
 * Modified from board-generic.c
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
#include <linux/gpio.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/mutex.h>
#include <linux/platform_device.h>
#include <linux/input.h>
#include <linux/clk.h>
#include <linux/omapfb.h>

#include <linux/spi/spi.h>
#include <linux/spi/ads7846.h>
#include <linux/workqueue.h>
#include <linux/delay.h>

#include <linux/platform_data/keypad-omap.h>
#include <linux/platform_data/lcd-mipid.h>

#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>

#include <mach/mux.h>
#include <plat/mmc.h>
#include <plat/clock.h>

#include <mach/hardware.h>
#include <mach/usb.h>

#include "common.h"

#define ADS7846_PENDOWN_GPIO    15

static const unsigned int nokia770_keymap[] = {
    KEY(1, 0, GROUP_0 | KEY_UP),
    KEY(2, 0, GROUP_1 | KEY_F5),
    KEY(0, 1, GROUP_0 | KEY_LEFT),
    KEY(1, 1, GROUP_0 | KEY_ENTER),
    KEY(2, 1, GROUP_0 | KEY_RIGHT),
    KEY(0, 2, GROUP_1 | KEY_ESC),
    KEY(1, 2, GROUP_0 | KEY_DOWN),
    KEY(2, 2, GROUP_1 | KEY_F4),
    KEY(0, 3, GROUP_2 | KEY_F7),
    KEY(1, 3, GROUP_2 | KEY_F8),
    KEY(2, 3, GROUP_2 | KEY_F6),
};

static struct resource nokia770_kp_resources[] = {
    [0] = {
        .start  = INT_KEYBOARD,
        .end    = INT_KEYBOARD,
        .flags  = IORESOURCE_IRQ,
    },
};

static const struct matrix_keymap_data nokia770_keymap_data = {
    .keymap     = nokia770_keymap,
    .keymap_size    = ARRAY_SIZE(nokia770_keymap),
};

static struct omap_kp_platform_data nokia770_kp_data = {
    .rows       = 8,
    .cols       = 8,
    .keymap_data    = &nokia770_keymap_data,
    .delay      = 4,
};

static struct platform_device nokia770_kp_device = {
    .name       = "omap-keypad",
    .id     = -1,
    .dev        = {
        .platform_data = &nokia770_kp_data,
    },
    .num_resources  = ARRAY_SIZE(nokia770_kp_resources),
    .resource   = nokia770_kp_resources,
};

static struct platform_device *nokia770_devices[] __initdata = {
    &nokia770_kp_device,
};

static void mipid_shutdown(struct mipid_platform_data *pdata)
{
    if (pdata->nreset_gpio != -1) {
        printk(KERN_INFO "shutdown LCD\n");
        gpio_set_value(pdata->nreset_gpio, 0);
        msleep(120);
    }
}

static struct mipid_platform_data nokia770_mipid_platform_data = {
    .shutdown = mipid_shutdown,
};

static struct omap_lcd_config nokia770_lcd_config __initdata = {
    .ctrl_name  = "hwa742",
};

static void __init mipid_dev_init(void)
{
    nokia770_mipid_platform_data.nreset_gpio = 13;
    nokia770_mipid_platform_data.data_lines = 16;

    omapfb_set_lcd_config(&nokia770_lcd_config);
}

static void __init ads7846_dev_init(void)
{
    if (gpio_request(ADS7846_PENDOWN_GPIO, "ADS7846 pendown") < 0)
        printk(KERN_ERR "can't get ads7846 pen down GPIO\n");
}

static int ads7846_get_pendown_state(void)
{
    return !gpio_get_value(ADS7846_PENDOWN_GPIO);
}

static struct ads7846_platform_data nokia770_ads7846_platform_data __initdata = {
    .x_max      = 0x0fff,
    .y_max      = 0x0fff,
    .x_plate_ohms   = 180,
    .pressure_max   = 255,
    .debounce_max   = 10,
    .debounce_tol   = 3,
    .debounce_rep   = 1,
    .get_pendown_state  = ads7846_get_pendown_state,
};

static struct spi_board_info nokia770_spi_board_info[] __initdata = {
    [0] = {
        .modalias       = "lcd_mipid",
        .bus_num        = 2,
        .chip_select    = 3,
        .max_speed_hz   = 12000000,
        .platform_data  = &nokia770_mipid_platform_data,
    },
    [1] = {
        .modalias       = "ads7846",
        .bus_num        = 2,
        .chip_select    = 0,
        .max_speed_hz   = 2500000,
        .platform_data  = &nokia770_ads7846_platform_data,
    },
};

static void __init hwa742_dev_init(void)
{
    clk_add_alias("hwa_sys_ck", NULL, "bclk", NULL);
}

/* assume no Mini-AB port */

static struct omap_usb_config nokia770_usb_config __initdata = {
    .otg        = 1,
    .register_host  = 1,
    .register_dev   = 1,
    .hmc_mode   = 16,
    .pins[0]    = 6,
};

#if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)

#define NOKIA770_GPIO_MMC_POWER     41
#define NOKIA770_GPIO_MMC_SWITCH    23

static int nokia770_mmc_set_power(struct device *dev, int slot, int power_on,
                int vdd)
{
    gpio_set_value(NOKIA770_GPIO_MMC_POWER, power_on);
    return 0;
}

static int nokia770_mmc_get_cover_state(struct device *dev, int slot)
{
    return gpio_get_value(NOKIA770_GPIO_MMC_SWITCH);
}

static struct omap_mmc_platform_data nokia770_mmc2_data = {
    .nr_slots                       = 1,
    .max_freq                       = 12000000,
    .slots[0]       = {
        .set_power      = nokia770_mmc_set_power,
        .get_cover_state    = nokia770_mmc_get_cover_state,
        .ocr_mask               = MMC_VDD_32_33|MMC_VDD_33_34,
        .name                   = "mmcblk",
    },
};

static struct omap_mmc_platform_data *nokia770_mmc_data[OMAP16XX_NR_MMC];

static void __init nokia770_mmc_init(void)
{
    int ret;

    ret = gpio_request(NOKIA770_GPIO_MMC_POWER, "MMC power");
    if (ret < 0)
        return;
    gpio_direction_output(NOKIA770_GPIO_MMC_POWER, 0);

    ret = gpio_request(NOKIA770_GPIO_MMC_SWITCH, "MMC cover");
    if (ret < 0) {
        gpio_free(NOKIA770_GPIO_MMC_POWER);
        return;
    }
    gpio_direction_input(NOKIA770_GPIO_MMC_SWITCH);

    /* Only the second MMC controller is used */
    nokia770_mmc_data[1] = &nokia770_mmc2_data;
    omap1_init_mmc(nokia770_mmc_data, OMAP16XX_NR_MMC);
}

#else
static inline void nokia770_mmc_init(void)
{
}
#endif

static void __init omap_nokia770_init(void)
{
    /* On Nokia 770, the SleepX signal is masked with an
     * MPUIO line by default.  It has to be unmasked for it
     * to become functional */

    /* SleepX mask direction */
    omap_writew((omap_readw(0xfffb5008) & ~2), 0xfffb5008);
    /* Unmask SleepX signal */
    omap_writew((omap_readw(0xfffb5004) & ~2), 0xfffb5004);

    platform_add_devices(nokia770_devices, ARRAY_SIZE(nokia770_devices));
    nokia770_spi_board_info[1].irq = gpio_to_irq(15);
    spi_register_board_info(nokia770_spi_board_info,
                ARRAY_SIZE(nokia770_spi_board_info));
    omap_serial_init();
    omap_register_i2c_bus(1, 100, NULL, 0);
    hwa742_dev_init();
    ads7846_dev_init();
    mipid_dev_init();
    omap1_usb_init(&nokia770_usb_config);
    nokia770_mmc_init();
}

MACHINE_START(NOKIA770, "Nokia 770")
    .atag_offset    = 0x100,
    .map_io     = omap16xx_map_io,
    .init_early     = omap1_init_early,
    .reserve    = omap_reserve,
    .init_irq   = omap1_init_irq,
    .init_machine   = omap_nokia770_init,
    .init_late  = omap1_init_late,
    .timer      = &omap1_timer,
    .restart    = omap1_restart,
MACHINE_END