mach-mx27_3ds.c

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/*
 * Copyright 2009 Freescale Semiconductor, Inc. All Rights Reserved.
 *
 * Author: Fabio Estevam <[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; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

/*
 * This machine is known as:
 *  - i.MX27 3-Stack Development System
 *  - i.MX27 Platform Development Kit (i.MX27 PDK)
 */

#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/irq.h>
#include <linux/usb/otg.h>
#include <linux/usb/ulpi.h>
#include <linux/delay.h>
#include <linux/mfd/mc13783.h>
#include <linux/spi/spi.h>
#include <linux/regulator/machine.h>
#include <linux/spi/l4f00242t03.h>

#include <media/soc_camera.h>

#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
#include <mach/hardware.h>
#include <mach/common.h>
#include <mach/iomux-mx27.h>
#include <mach/ulpi.h>
#include <mach/3ds_debugboard.h>

#include "devices-imx27.h"

#define SD1_EN_GPIO     IMX_GPIO_NR(2, 25)
#define OTG_PHY_RESET_GPIO  IMX_GPIO_NR(2, 23)
#define SPI2_SS0        IMX_GPIO_NR(4, 21)
#define PMIC_INT        IMX_GPIO_NR(3, 14)
#define SPI1_SS0        IMX_GPIO_NR(4, 28)
#define SD1_CD          IMX_GPIO_NR(2, 26)
#define LCD_RESET       IMX_GPIO_NR(1, 3)
#define LCD_ENABLE      IMX_GPIO_NR(1, 31)
#define CSI_PWRDWN      IMX_GPIO_NR(4, 19)
#define CSI_RESET       IMX_GPIO_NR(3, 6)

static const int mx27pdk_pins[] __initconst = {
    /* UART1 */
    PE12_PF_UART1_TXD,
    PE13_PF_UART1_RXD,
    PE14_PF_UART1_CTS,
    PE15_PF_UART1_RTS,
    /* FEC */
    PD0_AIN_FEC_TXD0,
    PD1_AIN_FEC_TXD1,
    PD2_AIN_FEC_TXD2,
    PD3_AIN_FEC_TXD3,
    PD4_AOUT_FEC_RX_ER,
    PD5_AOUT_FEC_RXD1,
    PD6_AOUT_FEC_RXD2,
    PD7_AOUT_FEC_RXD3,
    PD8_AF_FEC_MDIO,
    PD9_AIN_FEC_MDC,
    PD10_AOUT_FEC_CRS,
    PD11_AOUT_FEC_TX_CLK,
    PD12_AOUT_FEC_RXD0,
    PD13_AOUT_FEC_RX_DV,
    PD14_AOUT_FEC_RX_CLK,
    PD15_AOUT_FEC_COL,
    PD16_AIN_FEC_TX_ER,
    PF23_AIN_FEC_TX_EN,
    /* SDHC1 */
    PE18_PF_SD1_D0,
    PE19_PF_SD1_D1,
    PE20_PF_SD1_D2,
    PE21_PF_SD1_D3,
    PE22_PF_SD1_CMD,
    PE23_PF_SD1_CLK,
    SD1_EN_GPIO | GPIO_GPIO | GPIO_OUT,
    /* OTG */
    OTG_PHY_RESET_GPIO | GPIO_GPIO | GPIO_OUT,
    PC7_PF_USBOTG_DATA5,
    PC8_PF_USBOTG_DATA6,
    PC9_PF_USBOTG_DATA0,
    PC10_PF_USBOTG_DATA2,
    PC11_PF_USBOTG_DATA1,
    PC12_PF_USBOTG_DATA4,
    PC13_PF_USBOTG_DATA3,
    PE0_PF_USBOTG_NXT,
    PE1_PF_USBOTG_STP,
    PE2_PF_USBOTG_DIR,
    PE24_PF_USBOTG_CLK,
    PE25_PF_USBOTG_DATA7,
    /* CSPI1 */
    PD31_PF_CSPI1_MOSI,
    PD30_PF_CSPI1_MISO,
    PD29_PF_CSPI1_SCLK,
    PD25_PF_CSPI1_RDY,
    SPI1_SS0 | GPIO_GPIO | GPIO_OUT,
    /* CSPI2 */
    PD22_PF_CSPI2_SCLK,
    PD23_PF_CSPI2_MISO,
    PD24_PF_CSPI2_MOSI,
    SPI2_SS0 | GPIO_GPIO | GPIO_OUT,
    /* I2C1 */
    PD17_PF_I2C_DATA,
    PD18_PF_I2C_CLK,
    /* PMIC INT */
    PMIC_INT | GPIO_GPIO | GPIO_IN,
    /* LCD */
    PA5_PF_LSCLK,
    PA6_PF_LD0,
    PA7_PF_LD1,
    PA8_PF_LD2,
    PA9_PF_LD3,
    PA10_PF_LD4,
    PA11_PF_LD5,
    PA12_PF_LD6,
    PA13_PF_LD7,
    PA14_PF_LD8,
    PA15_PF_LD9,
    PA16_PF_LD10,
    PA17_PF_LD11,
    PA18_PF_LD12,
    PA19_PF_LD13,
    PA20_PF_LD14,
    PA21_PF_LD15,
    PA22_PF_LD16,
    PA23_PF_LD17,
    PA28_PF_HSYNC,
    PA29_PF_VSYNC,
    PA30_PF_CONTRAST,
    LCD_ENABLE | GPIO_GPIO | GPIO_OUT,
    LCD_RESET | GPIO_GPIO | GPIO_OUT,
    /* CSI */
    PB10_PF_CSI_D0,
    PB11_PF_CSI_D1,
    PB12_PF_CSI_D2,
    PB13_PF_CSI_D3,
    PB14_PF_CSI_D4,
    PB15_PF_CSI_MCLK,
    PB16_PF_CSI_PIXCLK,
    PB17_PF_CSI_D5,
    PB18_PF_CSI_D6,
    PB19_PF_CSI_D7,
    PB20_PF_CSI_VSYNC,
    PB21_PF_CSI_HSYNC,
    CSI_PWRDWN | GPIO_GPIO | GPIO_OUT,
    CSI_RESET | GPIO_GPIO | GPIO_OUT,
    /* SSI4 */
    PC16_PF_SSI4_FS,
    PC17_PF_SSI4_RXD,
    PC18_PF_SSI4_TXD,
    PC19_PF_SSI4_CLK,
};

static struct gpio mx27_3ds_camera_gpios[] = {
    { CSI_PWRDWN, GPIOF_OUT_INIT_HIGH, "camera-power" },
    { CSI_RESET, GPIOF_OUT_INIT_HIGH, "camera-reset" },
};

static const struct imxuart_platform_data uart_pdata __initconst = {
    .flags = IMXUART_HAVE_RTSCTS,
};

/*
 * Matrix keyboard
 */

static const uint32_t mx27_3ds_keymap[] = {
    KEY(0, 0, KEY_UP),
    KEY(0, 1, KEY_DOWN),
    KEY(1, 0, KEY_RIGHT),
    KEY(1, 1, KEY_LEFT),
    KEY(1, 2, KEY_ENTER),
    KEY(2, 0, KEY_F6),
    KEY(2, 1, KEY_F8),
    KEY(2, 2, KEY_F9),
    KEY(2, 3, KEY_F10),
};

static const struct matrix_keymap_data mx27_3ds_keymap_data __initconst = {
    .keymap     = mx27_3ds_keymap,
    .keymap_size    = ARRAY_SIZE(mx27_3ds_keymap),
};

static int mx27_3ds_sdhc1_init(struct device *dev, irq_handler_t detect_irq,
                void *data)
{
    return request_irq(gpio_to_irq(SD1_CD), detect_irq,
    IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING, "sdhc1-card-detect", data);
}

static void mx27_3ds_sdhc1_exit(struct device *dev, void *data)
{
    free_irq(gpio_to_irq(SD1_CD), data);
}

static const struct imxmmc_platform_data sdhc1_pdata __initconst = {
    .init = mx27_3ds_sdhc1_init,
    .exit = mx27_3ds_sdhc1_exit,
};

static void mx27_3ds_sdhc1_enable_level_translator(void)
{
    /* Turn on TXB0108 OE pin */
    gpio_request(SD1_EN_GPIO, "sd1_enable");
    gpio_direction_output(SD1_EN_GPIO, 1);
}


static int otg_phy_init(void)
{
    gpio_request(OTG_PHY_RESET_GPIO, "usb-otg-reset");
    gpio_direction_output(OTG_PHY_RESET_GPIO, 0);
    mdelay(1);
    gpio_set_value(OTG_PHY_RESET_GPIO, 1);
    return 0;
}

static int mx27_3ds_otg_init(struct platform_device *pdev)
{
    return mx27_initialize_usb_hw(pdev->id, MXC_EHCI_INTERFACE_DIFF_UNI);
}

static struct mxc_usbh_platform_data otg_pdata __initdata = {
    .init   = mx27_3ds_otg_init,
    .portsc = MXC_EHCI_MODE_ULPI,
};

static const struct fsl_usb2_platform_data otg_device_pdata __initconst = {
    .operating_mode = FSL_USB2_DR_DEVICE,
    .phy_mode       = FSL_USB2_PHY_ULPI,
};

static bool otg_mode_host __initdata;

static int __init mx27_3ds_otg_mode(char *options)
{
    if (!strcmp(options, "host"))
        otg_mode_host = true;
    else if (!strcmp(options, "device"))
        otg_mode_host = false;
    else
        pr_info("otg_mode neither \"host\" nor \"device\". "
            "Defaulting to device\n");
    return 1;
}
__setup("otg_mode=", mx27_3ds_otg_mode);

/* Regulators */
static struct regulator_init_data gpo_init = {
    .constraints = {
        .boot_on = 1,
        .always_on = 1,
    }
};

static struct regulator_consumer_supply vmmc1_consumers[] = {
    REGULATOR_SUPPLY("vcore", "spi0.0"),
    REGULATOR_SUPPLY("cmos_2v8", "soc-camera-pdrv.0"),
};

static struct regulator_init_data vmmc1_init = {
    .constraints = {
        .min_uV = 2800000,
        .max_uV = 2800000,
        .apply_uV = 1,
        .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
                  REGULATOR_CHANGE_STATUS,
    },
    .num_consumer_supplies = ARRAY_SIZE(vmmc1_consumers),
    .consumer_supplies = vmmc1_consumers,
};

static struct regulator_consumer_supply vgen_consumers[] = {
    REGULATOR_SUPPLY("vdd", "spi0.0"),
};

static struct regulator_init_data vgen_init = {
    .constraints = {
        .min_uV = 1800000,
        .max_uV = 1800000,
        .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
    },
    .num_consumer_supplies = ARRAY_SIZE(vgen_consumers),
    .consumer_supplies = vgen_consumers,
};

static struct regulator_consumer_supply vvib_consumers[] = {
    REGULATOR_SUPPLY("cmos_vcore", "soc-camera-pdrv.0"),
};

static struct regulator_init_data vvib_init = {
    .constraints = {
        .min_uV = 1300000,
        .max_uV = 1300000,
        .apply_uV = 1,
        .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
                  REGULATOR_CHANGE_STATUS,
    },
    .num_consumer_supplies = ARRAY_SIZE(vvib_consumers),
    .consumer_supplies = vvib_consumers,
};

static struct mc13xxx_regulator_init_data mx27_3ds_regulators[] = {
    {
        .id = MC13783_REG_VMMC1,
        .init_data = &vmmc1_init,
    }, {
        .id = MC13783_REG_VGEN,
        .init_data = &vgen_init,
    }, {
        .id = MC13783_REG_GPO1, /* Turn on 1.8V */
        .init_data = &gpo_init,
    }, {
        .id = MC13783_REG_GPO3, /* Turn on 3.3V */
        .init_data = &gpo_init,
    }, {
        .id = MC13783_REG_VVIB,  /* Power OV2640 */
        .init_data = &vvib_init,
    },
};

/* MC13783 */
static struct mc13xxx_codec_platform_data mx27_3ds_codec = {
    .dac_ssi_port = MC13783_SSI1_PORT,
    .adc_ssi_port = MC13783_SSI1_PORT,
};

static struct mc13xxx_platform_data mc13783_pdata = {
    .regulators = {
        .regulators = mx27_3ds_regulators,
        .num_regulators = ARRAY_SIZE(mx27_3ds_regulators),

    },
    .flags  = MC13XXX_USE_TOUCHSCREEN | MC13XXX_USE_RTC |
                        MC13XXX_USE_CODEC,
    .codec = &mx27_3ds_codec,
};

static struct imx_ssi_platform_data mx27_3ds_ssi_pdata = {
    .flags = IMX_SSI_DMA | IMX_SSI_NET,
};

/* SPI */
static int spi1_chipselect[] = {SPI1_SS0};

static const struct spi_imx_master spi1_pdata __initconst = {
    .chipselect = spi1_chipselect,
    .num_chipselect = ARRAY_SIZE(spi1_chipselect),
};

static int spi2_chipselect[] = {SPI2_SS0};

static const struct spi_imx_master spi2_pdata __initconst = {
    .chipselect = spi2_chipselect,
    .num_chipselect = ARRAY_SIZE(spi2_chipselect),
};

static int mx27_3ds_camera_power(struct device *dev, int on)
{
    /* enable or disable the camera */
    pr_debug("%s: %s the camera\n", __func__, on ? "ENABLE" : "DISABLE");
    gpio_set_value(CSI_PWRDWN, on ? 0 : 1);

    if (!on)
        goto out;

    /* If enabled, give a reset impulse */
    gpio_set_value(CSI_RESET, 0);
    msleep(20);
    gpio_set_value(CSI_RESET, 1);
    msleep(100);

out:
    return 0;
}

static struct i2c_board_info mx27_3ds_i2c_camera = {
    I2C_BOARD_INFO("ov2640", 0x30),
};

static struct regulator_bulk_data mx27_3ds_camera_regs[] = {
    { .supply = "cmos_vcore" },
    { .supply = "cmos_2v8" },
};

static struct soc_camera_link iclink_ov2640 = {
    .bus_id     = 0,
    .board_info = &mx27_3ds_i2c_camera,
    .i2c_adapter_id = 0,
    .power      = mx27_3ds_camera_power,
    .regulators = mx27_3ds_camera_regs,
    .num_regulators = ARRAY_SIZE(mx27_3ds_camera_regs),
};

static struct platform_device mx27_3ds_ov2640 = {
    .name   = "soc-camera-pdrv",
    .id = 0,
    .dev    = {
        .platform_data = &iclink_ov2640,
    },
};

static struct imx_fb_videomode mx27_3ds_modes[] = {
    {   /* 480x640 @ 60 Hz */
        .mode = {
            .name       = "Epson-VGA",
            .refresh    = 60,
            .xres       = 480,
            .yres       = 640,
            .pixclock   = 41701,
            .left_margin    = 20,
            .right_margin   = 41,
            .upper_margin   = 10,
            .lower_margin   = 5,
            .hsync_len  = 20,
            .vsync_len  = 10,
            .sync       = FB_SYNC_OE_ACT_HIGH |
                        FB_SYNC_CLK_INVERT,
            .vmode      = FB_VMODE_NONINTERLACED,
            .flag       = 0,
        },
        .bpp        = 16,
        .pcr        = 0xFAC08B82,
    },
};

static const struct imx_fb_platform_data mx27_3ds_fb_data __initconst = {
    .mode = mx27_3ds_modes,
    .num_modes = ARRAY_SIZE(mx27_3ds_modes),
    .pwmr       = 0x00A903FF,
    .lscr1      = 0x00120300,
    .dmacr      = 0x00020010,
};

/* LCD */
static struct l4f00242t03_pdata mx27_3ds_lcd_pdata = {
    .reset_gpio     = LCD_RESET,
    .data_enable_gpio   = LCD_ENABLE,
};

static struct spi_board_info mx27_3ds_spi_devs[] __initdata = {
    {
        .modalias   = "mc13783",
        .max_speed_hz   = 1000000,
        .bus_num    = 1,
        .chip_select    = 0, /* SS0 */
        .platform_data  = &mc13783_pdata,
        /* irq number is run-time assigned */
        .mode = SPI_CS_HIGH,
    }, {
        .modalias   = "l4f00242t03",
        .max_speed_hz   = 5000000,
        .bus_num    = 0,
        .chip_select    = 0, /* SS0 */
        .platform_data  = &mx27_3ds_lcd_pdata,
    },
};

static struct platform_device *devices[] __initdata = {
    &mx27_3ds_ov2640,
};

static const struct mx2_camera_platform_data mx27_3ds_cam_pdata __initconst = {
    .clk = 26000000,
};

static const struct imxi2c_platform_data mx27_3ds_i2c0_data __initconst = {
    .bitrate = 100000,
};

static void __init mx27pdk_init(void)
{
    int ret;
    imx27_soc_init();

    mxc_gpio_setup_multiple_pins(mx27pdk_pins, ARRAY_SIZE(mx27pdk_pins),
        "mx27pdk");
    mx27_3ds_sdhc1_enable_level_translator();
    imx27_add_imx_uart0(&uart_pdata);
    imx27_add_fec(NULL);
    imx27_add_imx_keypad(&mx27_3ds_keymap_data);
    imx27_add_mxc_mmc(0, &sdhc1_pdata);
    imx27_add_imx2_wdt();
    otg_phy_init();

    if (otg_mode_host) {
        otg_pdata.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS |
                ULPI_OTG_DRVVBUS_EXT);

        if (otg_pdata.otg)
            imx27_add_mxc_ehci_otg(&otg_pdata);
    }

    if (!otg_mode_host)
        imx27_add_fsl_usb2_udc(&otg_device_pdata);

    imx27_add_spi_imx1(&spi2_pdata);
    imx27_add_spi_imx0(&spi1_pdata);
    mx27_3ds_spi_devs[0].irq = gpio_to_irq(PMIC_INT);
    spi_register_board_info(mx27_3ds_spi_devs,
                        ARRAY_SIZE(mx27_3ds_spi_devs));

    if (mxc_expio_init(MX27_CS5_BASE_ADDR, IMX_GPIO_NR(3, 28)))
        pr_warn("Init of the debugboard failed, all devices on the debugboard are unusable.\n");
    imx27_add_imx_i2c(0, &mx27_3ds_i2c0_data);
    platform_add_devices(devices, ARRAY_SIZE(devices));
    imx27_add_imx_fb(&mx27_3ds_fb_data);

    ret = gpio_request_array(mx27_3ds_camera_gpios,
                 ARRAY_SIZE(mx27_3ds_camera_gpios));
    if (ret) {
        pr_err("Failed to request camera gpios");
        iclink_ov2640.power = NULL;
    }

    imx27_add_mx2_camera(&mx27_3ds_cam_pdata);
    imx27_add_imx_ssi(0, &mx27_3ds_ssi_pdata);

    imx_add_platform_device("imx_mc13783", 0, NULL, 0, NULL, 0);
}

static void __init mx27pdk_timer_init(void)
{
    mx27_clocks_init(26000000);
}

static struct sys_timer mx27pdk_timer = {
    .init   = mx27pdk_timer_init,
};

MACHINE_START(MX27_3DS, "Freescale MX27PDK")
    /* maintainer: Freescale Semiconductor, Inc. */
    .atag_offset = 0x100,
    .map_io = mx27_map_io,
    .init_early = imx27_init_early,
    .init_irq = mx27_init_irq,
    .handle_irq = imx27_handle_irq,
    .timer = &mx27pdk_timer,
    .init_machine = mx27pdk_init,
    .restart    = mxc_restart,
MACHINE_END