board-qi_lb60.c

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/*
 * linux/arch/mips/jz4740/board-qi_lb60.c
 *
 * QI_LB60 board support
 *
 * Copyright (c) 2009 Qi Hardware inc.,
 * Author: Xiangfu Liu <[email protected]>
 * Copyright 2010, Lars-Peter Clausen <[email protected]>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 or later
 * as published by the Free Software Foundation.
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/gpio.h>

#include <linux/input.h>
#include <linux/gpio_keys.h>
#include <linux/input/matrix_keypad.h>
#include <linux/spi/spi.h>
#include <linux/spi/spi_gpio.h>
#include <linux/power_supply.h>
#include <linux/power/jz4740-battery.h>
#include <linux/power/gpio-charger.h>

#include <asm/mach-jz4740/jz4740_fb.h>
#include <asm/mach-jz4740/jz4740_mmc.h>
#include <asm/mach-jz4740/jz4740_nand.h>

#include <linux/regulator/fixed.h>
#include <linux/regulator/machine.h>

#include <linux/leds_pwm.h>

#include <asm/mach-jz4740/platform.h>

#include "clock.h"

static bool is_avt2;

/* GPIOs */
#define QI_LB60_GPIO_SD_CD      JZ_GPIO_PORTD(0)
#define QI_LB60_GPIO_SD_VCC_EN_N    JZ_GPIO_PORTD(2)

#define QI_LB60_GPIO_KEYOUT(x)      (JZ_GPIO_PORTC(10) + (x))
#define QI_LB60_GPIO_KEYIN(x)       (JZ_GPIO_PORTD(18) + (x))
#define QI_LB60_GPIO_KEYIN8     JZ_GPIO_PORTD(26)

/* NAND */
static struct nand_ecclayout qi_lb60_ecclayout_1gb = {
    .eccbytes = 36,
    .eccpos = {
        6,  7,  8,  9,  10, 11, 12, 13,
        14, 15, 16, 17, 18, 19, 20, 21,
        22, 23, 24, 25, 26, 27, 28, 29,
        30, 31, 32, 33, 34, 35, 36, 37,
        38, 39, 40, 41
    },
    .oobfree = {
        { .offset = 2, .length = 4 },
        { .offset = 42, .length = 22 }
    },
};

/* Early prototypes of the QI LB60 had only 1GB of NAND.
 * In order to support these devices as well the partition and ecc layout is
 * initialized depending on the NAND size */
static struct mtd_partition qi_lb60_partitions_1gb[] = {
    {
        .name = "NAND BOOT partition",
        .offset = 0 * 0x100000,
        .size = 4 * 0x100000,
    },
    {
        .name = "NAND KERNEL partition",
        .offset = 4 * 0x100000,
        .size = 4 * 0x100000,
    },
    {
        .name = "NAND ROOTFS partition",
        .offset = 8 * 0x100000,
        .size = (504 + 512) * 0x100000,
    },
};

static struct nand_ecclayout qi_lb60_ecclayout_2gb = {
    .eccbytes = 72,
    .eccpos = {
        12, 13, 14, 15, 16, 17, 18, 19,
        20, 21, 22, 23, 24, 25, 26, 27,
        28, 29, 30, 31, 32, 33, 34, 35,
        36, 37, 38, 39, 40, 41, 42, 43,
        44, 45, 46, 47, 48, 49, 50, 51,
        52, 53, 54, 55, 56, 57, 58, 59,
        60, 61, 62, 63, 64, 65, 66, 67,
        68, 69, 70, 71, 72, 73, 74, 75,
        76, 77, 78, 79, 80, 81, 82, 83
    },
    .oobfree = {
        { .offset = 2, .length = 10 },
        { .offset = 84, .length = 44 },
    },
};

static struct mtd_partition qi_lb60_partitions_2gb[] = {
    {
        .name = "NAND BOOT partition",
        .offset = 0 * 0x100000,
        .size = 4 * 0x100000,
    },
    {
        .name = "NAND KERNEL partition",
        .offset = 4 * 0x100000,
        .size = 4 * 0x100000,
    },
    {
        .name = "NAND ROOTFS partition",
        .offset = 8 * 0x100000,
        .size = (504 + 512 + 1024) * 0x100000,
    },
};

static void qi_lb60_nand_ident(struct platform_device *pdev,
        struct nand_chip *chip, struct mtd_partition **partitions,
        int *num_partitions)
{
    if (chip->page_shift == 12) {
        chip->ecc.layout = &qi_lb60_ecclayout_2gb;
        *partitions = qi_lb60_partitions_2gb;
        *num_partitions = ARRAY_SIZE(qi_lb60_partitions_2gb);
    } else {
        chip->ecc.layout = &qi_lb60_ecclayout_1gb;
        *partitions = qi_lb60_partitions_1gb;
        *num_partitions = ARRAY_SIZE(qi_lb60_partitions_1gb);
    }
}

static struct jz_nand_platform_data qi_lb60_nand_pdata = {
    .ident_callback = qi_lb60_nand_ident,
    .busy_gpio = 94,
    .banks = { 1 },
};

/* Keyboard*/

#define KEY_QI_QI   KEY_F13
#define KEY_QI_UPRED    KEY_RIGHTALT
#define KEY_QI_VOLUP    KEY_VOLUMEUP
#define KEY_QI_VOLDOWN  KEY_VOLUMEDOWN
#define KEY_QI_FN   KEY_LEFTCTRL

static const uint32_t qi_lb60_keymap[] = {
    KEY(0, 0, KEY_F1),  /* S2 */
    KEY(0, 1, KEY_F2),  /* S3 */
    KEY(0, 2, KEY_F3),  /* S4 */
    KEY(0, 3, KEY_F4),  /* S5 */
    KEY(0, 4, KEY_F5),  /* S6 */
    KEY(0, 5, KEY_F6),  /* S7 */
    KEY(0, 6, KEY_F7),  /* S8 */

    KEY(1, 0, KEY_Q),   /* S10 */
    KEY(1, 1, KEY_W),   /* S11 */
    KEY(1, 2, KEY_E),   /* S12 */
    KEY(1, 3, KEY_R),   /* S13 */
    KEY(1, 4, KEY_T),   /* S14 */
    KEY(1, 5, KEY_Y),   /* S15 */
    KEY(1, 6, KEY_U),   /* S16 */
    KEY(1, 7, KEY_I),   /* S17 */
    KEY(2, 0, KEY_A),   /* S18 */
    KEY(2, 1, KEY_S),   /* S19 */
    KEY(2, 2, KEY_D),   /* S20 */
    KEY(2, 3, KEY_F),   /* S21 */
    KEY(2, 4, KEY_G),   /* S22 */
    KEY(2, 5, KEY_H),   /* S23 */
    KEY(2, 6, KEY_J),   /* S24 */
    KEY(2, 7, KEY_K),   /* S25 */
    KEY(3, 0, KEY_ESC), /* S26 */
    KEY(3, 1, KEY_Z),   /* S27 */
    KEY(3, 2, KEY_X),   /* S28 */
    KEY(3, 3, KEY_C),   /* S29 */
    KEY(3, 4, KEY_V),   /* S30 */
    KEY(3, 5, KEY_B),   /* S31 */
    KEY(3, 6, KEY_N),   /* S32 */
    KEY(3, 7, KEY_M),   /* S33 */
    KEY(4, 0, KEY_TAB), /* S34 */
    KEY(4, 1, KEY_CAPSLOCK),    /* S35 */
    KEY(4, 2, KEY_BACKSLASH),   /* S36 */
    KEY(4, 3, KEY_APOSTROPHE),  /* S37 */
    KEY(4, 4, KEY_COMMA),   /* S38 */
    KEY(4, 5, KEY_DOT), /* S39 */
    KEY(4, 6, KEY_SLASH),   /* S40 */
    KEY(4, 7, KEY_UP),  /* S41 */
    KEY(5, 0, KEY_O),   /* S42 */
    KEY(5, 1, KEY_L),   /* S43 */
    KEY(5, 2, KEY_EQUAL),   /* S44 */
    KEY(5, 3, KEY_QI_UPRED),    /* S45 */
    KEY(5, 4, KEY_SPACE),   /* S46 */
    KEY(5, 5, KEY_QI_QI),   /* S47 */
    KEY(5, 6, KEY_RIGHTCTRL),   /* S48 */
    KEY(5, 7, KEY_LEFT),    /* S49 */
    KEY(6, 0, KEY_F8),  /* S50 */
    KEY(6, 1, KEY_P),   /* S51 */
    KEY(6, 2, KEY_BACKSPACE),/* S52 */
    KEY(6, 3, KEY_ENTER),   /* S53 */
    KEY(6, 4, KEY_QI_VOLUP),    /* S54 */
    KEY(6, 5, KEY_QI_VOLDOWN),  /* S55 */
    KEY(6, 6, KEY_DOWN),    /* S56 */
    KEY(6, 7, KEY_RIGHT),   /* S57 */

    KEY(7, 0, KEY_LEFTSHIFT),   /* S58 */
    KEY(7, 1, KEY_LEFTALT), /* S59 */
    KEY(7, 2, KEY_QI_FN),   /* S60 */
};

static const struct matrix_keymap_data qi_lb60_keymap_data = {
    .keymap     = qi_lb60_keymap,
    .keymap_size    = ARRAY_SIZE(qi_lb60_keymap),
};

static const unsigned int qi_lb60_keypad_cols[] = {
    QI_LB60_GPIO_KEYOUT(0),
    QI_LB60_GPIO_KEYOUT(1),
    QI_LB60_GPIO_KEYOUT(2),
    QI_LB60_GPIO_KEYOUT(3),
    QI_LB60_GPIO_KEYOUT(4),
    QI_LB60_GPIO_KEYOUT(5),
    QI_LB60_GPIO_KEYOUT(6),
    QI_LB60_GPIO_KEYOUT(7),
};

static const unsigned int qi_lb60_keypad_rows[] = {
    QI_LB60_GPIO_KEYIN(0),
    QI_LB60_GPIO_KEYIN(1),
    QI_LB60_GPIO_KEYIN(2),
    QI_LB60_GPIO_KEYIN(3),
    QI_LB60_GPIO_KEYIN(4),
    QI_LB60_GPIO_KEYIN(5),
    QI_LB60_GPIO_KEYIN(6),
    QI_LB60_GPIO_KEYIN8,
};

static struct matrix_keypad_platform_data qi_lb60_pdata = {
    .keymap_data = &qi_lb60_keymap_data,
    .col_gpios  = qi_lb60_keypad_cols,
    .row_gpios  = qi_lb60_keypad_rows,
    .num_col_gpios  = ARRAY_SIZE(qi_lb60_keypad_cols),
    .num_row_gpios  = ARRAY_SIZE(qi_lb60_keypad_rows),
    .col_scan_delay_us  = 10,
    .debounce_ms        = 10,
    .wakeup         = 1,
    .active_low     = 1,
};

static struct platform_device qi_lb60_keypad = {
    .name       = "matrix-keypad",
    .id     = -1,
    .dev        = {
        .platform_data = &qi_lb60_pdata,
    },
};

/* Display */
static struct fb_videomode qi_lb60_video_modes[] = {
    {
        .name = "320x240",
        .xres = 320,
        .yres = 240,
        .refresh = 30,
        .left_margin = 140,
        .right_margin = 273,
        .upper_margin = 20,
        .lower_margin = 2,
        .hsync_len = 1,
        .vsync_len = 1,
        .sync = 0,
        .vmode = FB_VMODE_NONINTERLACED,
    },
};

static struct jz4740_fb_platform_data qi_lb60_fb_pdata = {
    .width      = 60,
    .height     = 45,
    .num_modes  = ARRAY_SIZE(qi_lb60_video_modes),
    .modes      = qi_lb60_video_modes,
    .bpp        = 24,
    .lcd_type   = JZ_LCD_TYPE_8BIT_SERIAL,
    .pixclk_falling_edge = 1,
};

struct spi_gpio_platform_data spigpio_platform_data = {
    .sck = JZ_GPIO_PORTC(23),
    .mosi = JZ_GPIO_PORTC(22),
    .miso = -1,
    .num_chipselect = 1,
};

static struct platform_device spigpio_device = {
    .name = "spi_gpio",
    .id   = 1,
    .dev = {
        .platform_data = &spigpio_platform_data,
    },
};

static struct spi_board_info qi_lb60_spi_board_info[] = {
    {
        .modalias = "ili8960",
        .controller_data = (void *)JZ_GPIO_PORTC(21),
        .chip_select = 0,
        .bus_num = 1,
        .max_speed_hz = 30 * 1000,
        .mode = SPI_3WIRE,
    },
};

/* Battery */
static struct jz_battery_platform_data qi_lb60_battery_pdata = {
    .gpio_charge =  JZ_GPIO_PORTC(27),
    .gpio_charge_active_low = 1,
    .info = {
        .name = "battery",
        .technology = POWER_SUPPLY_TECHNOLOGY_LIPO,
        .voltage_max_design = 4200000,
        .voltage_min_design = 3600000,
    },
};

/* GPIO Key: power */
static struct gpio_keys_button qi_lb60_gpio_keys_buttons[] = {
    [0] = {
        .code       = KEY_POWER,
        .gpio       = JZ_GPIO_PORTD(29),
        .active_low = 1,
        .desc       = "Power",
        .wakeup     = 1,
    },
};

static struct gpio_keys_platform_data qi_lb60_gpio_keys_data = {
    .nbuttons = ARRAY_SIZE(qi_lb60_gpio_keys_buttons),
    .buttons = qi_lb60_gpio_keys_buttons,
};

static struct platform_device qi_lb60_gpio_keys = {
    .name = "gpio-keys",
    .id =   -1,
    .dev = {
        .platform_data = &qi_lb60_gpio_keys_data,
    }
};

static struct jz4740_mmc_platform_data qi_lb60_mmc_pdata = {
    .gpio_card_detect   = QI_LB60_GPIO_SD_CD,
    .gpio_read_only     = -1,
    .gpio_power     = QI_LB60_GPIO_SD_VCC_EN_N,
    .power_active_low   = 1,
};

/* OHCI */
static struct regulator_consumer_supply avt2_usb_regulator_consumer =
    REGULATOR_SUPPLY("vbus", "jz4740-ohci");

static struct regulator_init_data avt2_usb_regulator_init_data = {
    .num_consumer_supplies = 1,
    .consumer_supplies = &avt2_usb_regulator_consumer,
    .constraints = {
        .name = "USB power",
        .min_uV = 5000000,
        .max_uV = 5000000,
        .valid_modes_mask = REGULATOR_MODE_NORMAL,
        .valid_ops_mask = REGULATOR_CHANGE_STATUS,
    },
};

static struct fixed_voltage_config avt2_usb_regulator_data = {
    .supply_name = "USB power",
    .microvolts = 5000000,
    .gpio = JZ_GPIO_PORTB(17),
    .init_data = &avt2_usb_regulator_init_data,
};

static struct platform_device avt2_usb_regulator_device = {
    .name = "reg-fixed-voltage",
    .id = -1,
    .dev = {
        .platform_data = &avt2_usb_regulator_data,
    }
};

/* beeper */
static struct platform_device qi_lb60_pwm_beeper = {
    .name = "pwm-beeper",
    .id = -1,
    .dev = {
        .platform_data = (void *)4,
    },
};

/* charger */
static char *qi_lb60_batteries[] = {
    "battery",
};

static struct gpio_charger_platform_data qi_lb60_charger_pdata = {
    .name = "usb",
    .type = POWER_SUPPLY_TYPE_USB,
    .gpio = JZ_GPIO_PORTD(28),
    .gpio_active_low = 1,
    .supplied_to = qi_lb60_batteries,
    .num_supplicants = ARRAY_SIZE(qi_lb60_batteries),
};

static struct platform_device qi_lb60_charger_device = {
    .name = "gpio-charger",
    .dev = {
        .platform_data = &qi_lb60_charger_pdata,
    },
};

/* audio */
static struct platform_device qi_lb60_audio_device = {
    .name = "qi-lb60-audio",
    .id = -1,
};

static struct platform_device *jz_platform_devices[] __initdata = {
    &jz4740_udc_device,
    &jz4740_mmc_device,
    &jz4740_nand_device,
    &qi_lb60_keypad,
    &spigpio_device,
    &jz4740_framebuffer_device,
    &jz4740_pcm_device,
    &jz4740_i2s_device,
    &jz4740_codec_device,
    &jz4740_rtc_device,
    &jz4740_adc_device,
    &jz4740_pwm_device,
    &qi_lb60_gpio_keys,
    &qi_lb60_pwm_beeper,
    &qi_lb60_charger_device,
    &qi_lb60_audio_device,
};

static void __init board_gpio_setup(void)
{
    /* We only need to enable/disable pullup here for pins used in generic
     * drivers. Everything else is done by the drivers themselves. */
    jz_gpio_disable_pullup(QI_LB60_GPIO_SD_VCC_EN_N);
    jz_gpio_disable_pullup(QI_LB60_GPIO_SD_CD);
}

static int __init qi_lb60_init_platform_devices(void)
{
    jz4740_framebuffer_device.dev.platform_data = &qi_lb60_fb_pdata;
    jz4740_nand_device.dev.platform_data = &qi_lb60_nand_pdata;
    jz4740_adc_device.dev.platform_data = &qi_lb60_battery_pdata;
    jz4740_mmc_device.dev.platform_data = &qi_lb60_mmc_pdata;

    jz4740_serial_device_register();

    spi_register_board_info(qi_lb60_spi_board_info,
                ARRAY_SIZE(qi_lb60_spi_board_info));

    if (is_avt2) {
        platform_device_register(&avt2_usb_regulator_device);
        platform_device_register(&jz4740_usb_ohci_device);
    }

    return platform_add_devices(jz_platform_devices,
                    ARRAY_SIZE(jz_platform_devices));

}

struct jz4740_clock_board_data jz4740_clock_bdata = {
    .ext_rate = 12000000,
    .rtc_rate = 32768,
};

static __init int board_avt2(char *str)
{
    qi_lb60_mmc_pdata.card_detect_active_low = 1;
    is_avt2 = true;

    return 1;
}
__setup("avt2", board_avt2);

static int __init qi_lb60_board_setup(void)
{
    printk(KERN_INFO "Qi Hardware JZ4740 QI %s setup\n",
        is_avt2 ? "AVT2" : "LB60");

    board_gpio_setup();

    if (qi_lb60_init_platform_devices())
        panic("Failed to initialize platform devices");

    return 0;
}
arch_initcall(qi_lb60_board_setup);