board-omap3touchbook.c

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/*
 * linux/arch/arm/mach-omap2/board-omap3touchbook.c
 *
 * Copyright (C) 2009 Always Innovating
 *
 * Modified from mach-omap2/board-omap3beagleboard.c
 *
 * Initial code: Grégoire Gentil, Tim Yamin
 *
 * 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/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/leds.h>
#include <linux/gpio.h>
#include <linux/input.h>
#include <linux/gpio_keys.h>

#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/nand.h>
#include <linux/mmc/host.h>

#include <linux/platform_data/spi-omap2-mcspi.h>
#include <linux/spi/spi.h>

#include <linux/spi/ads7846.h>

#include <linux/regulator/machine.h>
#include <linux/i2c/twl.h>

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

#include "common.h"
#include <plat/gpmc.h>
#include <linux/platform_data/mtd-nand-omap2.h>
#include <plat/usb.h>

#include "mux.h"
#include "hsmmc.h"
#include "common-board-devices.h"

#include <asm/setup.h>

#define OMAP3_AC_GPIO       136
#define OMAP3_TS_GPIO       162
#define TB_BL_PWM_TIMER     9
#define TB_KILL_POWER_GPIO  168

static unsigned long touchbook_revision;

static struct mtd_partition omap3touchbook_nand_partitions[] = {
    /* All the partition sizes are listed in terms of NAND block size */
    {
        .name       = "X-Loader",
        .offset     = 0,
        .size       = 4 * NAND_BLOCK_SIZE,
        .mask_flags = MTD_WRITEABLE,    /* force read-only */
    },
    {
        .name       = "U-Boot",
        .offset     = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
        .size       = 15 * NAND_BLOCK_SIZE,
        .mask_flags = MTD_WRITEABLE,    /* force read-only */
    },
    {
        .name       = "U-Boot Env",
        .offset     = MTDPART_OFS_APPEND,   /* Offset = 0x260000 */
        .size       = 1 * NAND_BLOCK_SIZE,
    },
    {
        .name       = "Kernel",
        .offset     = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
        .size       = 32 * NAND_BLOCK_SIZE,
    },
    {
        .name       = "File System",
        .offset     = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
        .size       = MTDPART_SIZ_FULL,
    },
};

#include "sdram-micron-mt46h32m32lf-6.h"

static struct omap2_hsmmc_info mmc[] = {
    {
        .mmc        = 1,
        .caps       = MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,
        .gpio_wp    = 29,
        .deferred   = true,
    },
    {}  /* Terminator */
};

static struct regulator_consumer_supply touchbook_vmmc1_supply[] = {
    REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),
};

static struct regulator_consumer_supply touchbook_vsim_supply[] = {
    REGULATOR_SUPPLY("vmmc_aux", "omap_hsmmc.0"),
};

static struct gpio_led gpio_leds[];

static int touchbook_twl_gpio_setup(struct device *dev,
        unsigned gpio, unsigned ngpio)
{
    /* gpio + 0 is "mmc0_cd" (input/IRQ) */
    mmc[0].gpio_cd = gpio + 0;
    omap_hsmmc_late_init(mmc);

    /* REVISIT: need ehci-omap hooks for external VBUS
     * power switch and overcurrent detect
     */
    gpio_request_one(gpio + 1, GPIOF_IN, "EHCI_nOC");

    /* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, active low) */
    gpio_request_one(gpio + TWL4030_GPIO_MAX, GPIOF_OUT_INIT_LOW,
             "nEN_USB_PWR");

    /* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
    gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;

    return 0;
}

static struct twl4030_gpio_platform_data touchbook_gpio_data = {
    .use_leds   = true,
    .pullups    = BIT(1),
    .pulldowns  = BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
                | BIT(15) | BIT(16) | BIT(17),
    .setup      = touchbook_twl_gpio_setup,
};

static struct regulator_consumer_supply touchbook_vdac_supply[] = {
{
    .supply     = "vdac",
},
};

static struct regulator_consumer_supply touchbook_vdvi_supply[] = {
{
    .supply     = "vdvi",
},
};

/* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
static struct regulator_init_data touchbook_vmmc1 = {
    .constraints = {
        .min_uV         = 1850000,
        .max_uV         = 3150000,
        .valid_modes_mask   = REGULATOR_MODE_NORMAL
                    | REGULATOR_MODE_STANDBY,
        .valid_ops_mask     = REGULATOR_CHANGE_VOLTAGE
                    | REGULATOR_CHANGE_MODE
                    | REGULATOR_CHANGE_STATUS,
    },
    .num_consumer_supplies  = ARRAY_SIZE(touchbook_vmmc1_supply),
    .consumer_supplies  = touchbook_vmmc1_supply,
};

/* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
static struct regulator_init_data touchbook_vsim = {
    .constraints = {
        .min_uV         = 1800000,
        .max_uV         = 3000000,
        .valid_modes_mask   = REGULATOR_MODE_NORMAL
                    | REGULATOR_MODE_STANDBY,
        .valid_ops_mask     = REGULATOR_CHANGE_VOLTAGE
                    | REGULATOR_CHANGE_MODE
                    | REGULATOR_CHANGE_STATUS,
    },
    .num_consumer_supplies  = ARRAY_SIZE(touchbook_vsim_supply),
    .consumer_supplies  = touchbook_vsim_supply,
};

static struct twl4030_platform_data touchbook_twldata = {
    /* platform_data for children goes here */
    .gpio       = &touchbook_gpio_data,
    .vmmc1      = &touchbook_vmmc1,
    .vsim       = &touchbook_vsim,
};

static struct i2c_board_info __initdata touchBook_i2c_boardinfo[] = {
    {
        I2C_BOARD_INFO("bq27200", 0x55),
    },
};

static int __init omap3_touchbook_i2c_init(void)
{
    /* Standard TouchBook bus */
    omap3_pmic_get_config(&touchbook_twldata,
            TWL_COMMON_PDATA_USB | TWL_COMMON_PDATA_AUDIO,
            TWL_COMMON_REGULATOR_VDAC | TWL_COMMON_REGULATOR_VPLL2);

    touchbook_twldata.vdac->num_consumer_supplies =
                    ARRAY_SIZE(touchbook_vdac_supply);
    touchbook_twldata.vdac->consumer_supplies = touchbook_vdac_supply;

    touchbook_twldata.vpll2->constraints.name = "VDVI";
    touchbook_twldata.vpll2->num_consumer_supplies =
                    ARRAY_SIZE(touchbook_vdvi_supply);
    touchbook_twldata.vpll2->consumer_supplies = touchbook_vdvi_supply;

    omap3_pmic_init("twl4030", &touchbook_twldata);
    /* Additional TouchBook bus */
    omap_register_i2c_bus(3, 100, touchBook_i2c_boardinfo,
            ARRAY_SIZE(touchBook_i2c_boardinfo));

    return 0;
}

static struct ads7846_platform_data ads7846_pdata = {
    .x_min          = 100,
    .y_min          = 265,
    .x_max          = 3950,
    .y_max          = 3750,
    .x_plate_ohms       = 40,
    .pressure_max       = 255,
    .debounce_max       = 10,
    .debounce_tol       = 5,
    .debounce_rep       = 1,
    .gpio_pendown       = OMAP3_TS_GPIO,
    .keep_vref_on       = 1,
};

static struct gpio_led gpio_leds[] = {
    {
        .name           = "touchbook::usr0",
        .default_trigger    = "heartbeat",
        .gpio           = 150,
    },
    {
        .name           = "touchbook::usr1",
        .default_trigger    = "mmc0",
        .gpio           = 149,
    },
    {
        .name           = "touchbook::pmu_stat",
        .gpio           = -EINVAL,  /* gets replaced */
        .active_low     = true,
    },
};

static struct gpio_led_platform_data gpio_led_info = {
    .leds       = gpio_leds,
    .num_leds   = ARRAY_SIZE(gpio_leds),
};

static struct platform_device leds_gpio = {
    .name   = "leds-gpio",
    .id = -1,
    .dev    = {
        .platform_data  = &gpio_led_info,
    },
};

static struct gpio_keys_button gpio_buttons[] = {
    {
        .code           = BTN_EXTRA,
        .gpio           = 7,
        .desc           = "user",
        .wakeup         = 1,
    },
    {
        .code           = KEY_POWER,
        .gpio           = 183,
        .desc           = "power",
        .wakeup         = 1,
    },
};

static struct gpio_keys_platform_data gpio_key_info = {
    .buttons    = gpio_buttons,
    .nbuttons   = ARRAY_SIZE(gpio_buttons),
};

static struct platform_device keys_gpio = {
    .name   = "gpio-keys",
    .id = -1,
    .dev    = {
        .platform_data  = &gpio_key_info,
    },
};

#ifdef CONFIG_OMAP_MUX
static struct omap_board_mux board_mux[] __initdata = {
    { .reg_offset = OMAP_MUX_TERMINATOR },
};
#endif

static struct platform_device *omap3_touchbook_devices[] __initdata = {
    &leds_gpio,
    &keys_gpio,
};

static const struct usbhs_omap_board_data usbhs_bdata __initconst = {

    .port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
    .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
    .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,

    .phy_reset  = true,
    .reset_gpio_port[0]  = -EINVAL,
    .reset_gpio_port[1]  = 147,
    .reset_gpio_port[2]  = -EINVAL
};

static void omap3_touchbook_poweroff(void)
{
    int pwr_off = TB_KILL_POWER_GPIO;

    if (gpio_request_one(pwr_off, GPIOF_OUT_INIT_LOW, "DVI reset") < 0)
        printk(KERN_ERR "Unable to get kill power GPIO\n");
}

static int __init early_touchbook_revision(char *p)
{
    if (!p)
        return 0;

    return strict_strtoul(p, 10, &touchbook_revision);
}
early_param("tbr", early_touchbook_revision);

static void __init omap3_touchbook_init(void)
{
    omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);

    pm_power_off = omap3_touchbook_poweroff;

    if (system_rev >= 0x20 && system_rev <= 0x34301000) {
        omap_mux_init_gpio(23, OMAP_PIN_INPUT);
        mmc[0].gpio_wp = 23;
    } else {
        omap_mux_init_gpio(29, OMAP_PIN_INPUT);
    }
    omap_hsmmc_init(mmc);

    omap3_touchbook_i2c_init();
    platform_add_devices(omap3_touchbook_devices,
            ARRAY_SIZE(omap3_touchbook_devices));
    omap_serial_init();
    omap_sdrc_init(mt46h32m32lf6_sdrc_params,
                  mt46h32m32lf6_sdrc_params);

    omap_mux_init_gpio(170, OMAP_PIN_INPUT);
    /* REVISIT leave DVI powered down until it's needed ... */
    gpio_request_one(176, GPIOF_OUT_INIT_HIGH, "DVI_nPD");

    /* Touchscreen and accelerometer */
    omap_ads7846_init(4, OMAP3_TS_GPIO, 310, &ads7846_pdata);
    usb_musb_init(NULL);
    usbhs_init(&usbhs_bdata);
    omap_nand_flash_init(NAND_BUSWIDTH_16, omap3touchbook_nand_partitions,
                 ARRAY_SIZE(omap3touchbook_nand_partitions));

    /* Ensure SDRC pins are mux'd for self-refresh */
    omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
    omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
}

MACHINE_START(TOUCHBOOK, "OMAP3 touchbook Board")
    /* Maintainer: Gregoire Gentil - http://www.alwaysinnovating.com */
    .atag_offset    = 0x100,
    .reserve    = omap_reserve,
    .map_io     = omap3_map_io,
    .init_early = omap3430_init_early,
    .init_irq   = omap3_init_irq,
    .handle_irq = omap3_intc_handle_irq,
    .init_machine   = omap3_touchbook_init,
    .init_late  = omap3430_init_late,
    .timer      = &omap3_secure_timer,
    .restart    = omap_prcm_restart,
MACHINE_END