board-tnetv107x-evm.c

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/*
 * Texas Instruments TNETV107X EVM Board Support
 *
 * Copyright (C) 2010 Texas Instruments
 *
 * 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/kernel.h>
#include <linux/init.h>
#include <linux/console.h>
#include <linux/dma-mapping.h>
#include <linux/interrupt.h>
#include <linux/gpio.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/ratelimit.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/input.h>
#include <linux/input/matrix_keypad.h>
#include <linux/spi/spi.h>

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

#include <mach/irqs.h>
#include <mach/edma.h>
#include <mach/mux.h>
#include <mach/cp_intc.h>
#include <mach/tnetv107x.h>

#define EVM_MMC_WP_GPIO     21
#define EVM_MMC_CD_GPIO     24
#define EVM_SPI_CS_GPIO     54

static int initialize_gpio(int gpio, char *desc)
{
    int ret;

    ret = gpio_request(gpio, desc);
    if (ret < 0) {
        pr_err_ratelimited("cannot open %s gpio\n", desc);
        return -ENOSYS;
    }
    gpio_direction_input(gpio);
    return gpio;
}

static int mmc_get_cd(int index)
{
    static int gpio;

    if (!gpio)
        gpio = initialize_gpio(EVM_MMC_CD_GPIO, "mmc card detect");

    if (gpio < 0)
        return gpio;

    return gpio_get_value(gpio) ? 0 : 1;
}

static int mmc_get_ro(int index)
{
    static int gpio;

    if (!gpio)
        gpio = initialize_gpio(EVM_MMC_WP_GPIO, "mmc write protect");

    if (gpio < 0)
        return gpio;

    return gpio_get_value(gpio) ? 1 : 0;
}

static struct davinci_mmc_config mmc_config = {
    .get_cd     = mmc_get_cd,
    .get_ro     = mmc_get_ro,
    .wires      = 4,
    .max_freq   = 50000000,
    .caps       = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED,
    .version    = MMC_CTLR_VERSION_1,
};

static const short sdio1_pins[] __initconst = {
    TNETV107X_SDIO1_CLK_1,      TNETV107X_SDIO1_CMD_1,
    TNETV107X_SDIO1_DATA0_1,    TNETV107X_SDIO1_DATA1_1,
    TNETV107X_SDIO1_DATA2_1,    TNETV107X_SDIO1_DATA3_1,
    TNETV107X_GPIO21,       TNETV107X_GPIO24,
    -1
};

static const short uart1_pins[] __initconst = {
    TNETV107X_UART1_RD,     TNETV107X_UART1_TD,
    -1
};

static const short ssp_pins[] __initconst = {
    TNETV107X_SSP0_0, TNETV107X_SSP0_1, TNETV107X_SSP0_2,
    TNETV107X_SSP1_0, TNETV107X_SSP1_1, TNETV107X_SSP1_2,
    TNETV107X_SSP1_3, -1
};

static struct mtd_partition nand_partitions[] = {
    /* bootloader (U-Boot, etc) in first 12 sectors */
    {
        .name       = "bootloader",
        .offset     = 0,
        .size       = (12*SZ_128K),
        .mask_flags = MTD_WRITEABLE,    /* force read-only */
    },
    /* bootloader params in the next sector */
    {
        .name       = "params",
        .offset     = MTDPART_OFS_NXTBLK,
        .size       = SZ_128K,
        .mask_flags = MTD_WRITEABLE,    /* force read-only */
    },
    /* kernel */
    {
        .name       = "kernel",
        .offset     = MTDPART_OFS_NXTBLK,
        .size       = SZ_4M,
        .mask_flags = 0,
    },
    /* file system */
    {
        .name       = "filesystem",
        .offset     = MTDPART_OFS_NXTBLK,
        .size       = MTDPART_SIZ_FULL,
        .mask_flags = 0,
    }
};

static struct davinci_nand_pdata nand_config = {
    .mask_cle   = 0x4000,
    .mask_ale   = 0x2000,
    .parts      = nand_partitions,
    .nr_parts   = ARRAY_SIZE(nand_partitions),
    .ecc_mode   = NAND_ECC_HW,
    .bbt_options    = NAND_BBT_USE_FLASH,
    .ecc_bits   = 1,
};

static struct davinci_uart_config serial_config __initconst = {
    .enabled_uarts  = BIT(1),
};

static const uint32_t keymap[] = {
    KEY(0, 0, KEY_NUMERIC_1),
    KEY(0, 1, KEY_NUMERIC_2),
    KEY(0, 2, KEY_NUMERIC_3),
    KEY(0, 3, KEY_FN_F1),
    KEY(0, 4, KEY_MENU),

    KEY(1, 0, KEY_NUMERIC_4),
    KEY(1, 1, KEY_NUMERIC_5),
    KEY(1, 2, KEY_NUMERIC_6),
    KEY(1, 3, KEY_UP),
    KEY(1, 4, KEY_FN_F2),

    KEY(2, 0, KEY_NUMERIC_7),
    KEY(2, 1, KEY_NUMERIC_8),
    KEY(2, 2, KEY_NUMERIC_9),
    KEY(2, 3, KEY_LEFT),
    KEY(2, 4, KEY_ENTER),

    KEY(3, 0, KEY_NUMERIC_STAR),
    KEY(3, 1, KEY_NUMERIC_0),
    KEY(3, 2, KEY_NUMERIC_POUND),
    KEY(3, 3, KEY_DOWN),
    KEY(3, 4, KEY_RIGHT),

    KEY(4, 0, KEY_FN_F3),
    KEY(4, 1, KEY_FN_F4),
    KEY(4, 2, KEY_MUTE),
    KEY(4, 3, KEY_HOME),
    KEY(4, 4, KEY_BACK),

    KEY(5, 0, KEY_VOLUMEDOWN),
    KEY(5, 1, KEY_VOLUMEUP),
    KEY(5, 2, KEY_F1),
    KEY(5, 3, KEY_F2),
    KEY(5, 4, KEY_F3),
};

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

static struct matrix_keypad_platform_data keypad_config = {
    .keymap_data    = &keymap_data,
    .num_row_gpios  = 6,
    .num_col_gpios  = 5,
    .debounce_ms    = 0, /* minimum */
    .active_low = 0, /* pull up realization */
    .no_autorepeat  = 0,
};

static void spi_select_device(int cs)
{
    static int gpio;

    if (!gpio) {
        int ret;
        ret = gpio_request(EVM_SPI_CS_GPIO, "spi chipsel");
        if (ret < 0) {
            pr_err("cannot open spi chipsel gpio\n");
            gpio = -ENOSYS;
            return;
        } else {
            gpio = EVM_SPI_CS_GPIO;
            gpio_direction_output(gpio, 0);
        }
    }

    if (gpio < 0)
        return;

    return gpio_set_value(gpio, cs ? 1 : 0);
}

static struct ti_ssp_spi_data spi_master_data = {
    .num_cs = 2,
    .select = spi_select_device,
    .iosel  = SSP_PIN_SEL(0, SSP_CLOCK) | SSP_PIN_SEL(1, SSP_DATA) |
          SSP_PIN_SEL(2, SSP_CHIPSEL)   | SSP_PIN_SEL(3, SSP_IN)   |
          SSP_INPUT_SEL(3),
};

static struct ti_ssp_data ssp_config = {
    .out_clock  = 250 * 1000,
    .dev_data   = {
        [1] = {
            .dev_name = "ti-ssp-spi",
            .pdata = &spi_master_data,
            .pdata_size = sizeof(spi_master_data),
        },
    },
};

static struct tnetv107x_device_info evm_device_info __initconst = {
    .serial_config      = &serial_config,
    .mmc_config[1]      = &mmc_config,  /* controller 1 */
    .nand_config[0]     = &nand_config, /* chip select 0 */
    .keypad_config      = &keypad_config,
    .ssp_config     = &ssp_config,
};

static struct spi_board_info spi_info[] __initconst = {
};

static __init void tnetv107x_evm_board_init(void)
{
    davinci_cfg_reg_list(sdio1_pins);
    davinci_cfg_reg_list(uart1_pins);
    davinci_cfg_reg_list(ssp_pins);

    tnetv107x_devices_init(&evm_device_info);

    spi_register_board_info(spi_info, ARRAY_SIZE(spi_info));
}

#ifdef CONFIG_SERIAL_8250_CONSOLE
static int __init tnetv107x_evm_console_init(void)
{
    return add_preferred_console("ttyS", 0, "115200");
}
console_initcall(tnetv107x_evm_console_init);
#endif

MACHINE_START(TNETV107X, "TNETV107X EVM")
    .atag_offset    = 0x100,
    .map_io     = tnetv107x_init,
    .init_irq   = cp_intc_init,
    .timer      = &davinci_timer,
    .init_machine   = tnetv107x_evm_board_init,
    .init_late  = davinci_init_late,
    .dma_zone_size  = SZ_128M,
    .restart    = tnetv107x_restart,
MACHINE_END