em-x270.c

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/*
 * Support for CompuLab EM-X270 platform
 *
 * Copyright (C) 2007, 2008 CompuLab, Ltd.
 * Author: Mike Rapoport <[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 as
 * published by the Free Software Foundation.
 */

#include <linux/irq.h>
#include <linux/platform_device.h>
#include <linux/delay.h>

#include <linux/dm9000.h>
#include <linux/rtc-v3020.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>
#include <linux/input.h>
#include <linux/gpio_keys.h>
#include <linux/gpio.h>
#include <linux/mfd/da903x.h>
#include <linux/regulator/machine.h>
#include <linux/spi/spi.h>
#include <linux/spi/tdo24m.h>
#include <linux/spi/libertas_spi.h>
#include <linux/spi/pxa2xx_spi.h>
#include <linux/power_supply.h>
#include <linux/apm-emulation.h>
#include <linux/i2c.h>
#include <linux/i2c/pca953x.h>
#include <linux/i2c/pxa-i2c.h>
#include <linux/regulator/userspace-consumer.h>

#include <media/soc_camera.h>

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

#include <mach/pxa27x.h>
#include <mach/pxa27x-udc.h>
#include <mach/audio.h>
#include <linux/platform_data/video-pxafb.h>
#include <linux/platform_data/usb-ohci-pxa27x.h>
#include <linux/platform_data/mmc-pxamci.h>
#include <linux/platform_data/keypad-pxa27x.h>
#include <linux/platform_data/camera-pxa.h>

#include "generic.h"
#include "devices.h"

/* EM-X270 specific GPIOs */
#define GPIO13_MMC_CD       (13)
#define GPIO95_MMC_WP       (95)
#define GPIO56_NAND_RB      (56)
#define GPIO93_CAM_RESET    (93)
#define GPIO16_USB_HUB_RESET    (16)

/* eXeda specific GPIOs */
#define GPIO114_MMC_CD      (114)
#define GPIO20_NAND_RB      (20)
#define GPIO38_SD_PWEN      (38)
#define GPIO37_WLAN_RST     (37)
#define GPIO95_TOUCHPAD_INT (95)
#define GPIO130_CAM_RESET   (130)
#define GPIO10_USB_HUB_RESET    (10)

/* common  GPIOs */
#define GPIO11_NAND_CS      (11)
#define GPIO41_ETHIRQ       (41)
#define EM_X270_ETHIRQ      PXA_GPIO_TO_IRQ(GPIO41_ETHIRQ)
#define GPIO115_WLAN_PWEN   (115)
#define GPIO19_WLAN_STRAP   (19)
#define GPIO9_USB_VBUS_EN   (9)

static int mmc_cd;
static int nand_rb;
static int dm9000_flags;
static int cam_reset;
static int usb_hub_reset;

static unsigned long common_pin_config[] = {
    /* AC'97 */
    GPIO28_AC97_BITCLK,
    GPIO29_AC97_SDATA_IN_0,
    GPIO30_AC97_SDATA_OUT,
    GPIO31_AC97_SYNC,
    GPIO98_AC97_SYSCLK,
    GPIO113_AC97_nRESET,

    /* BTUART */
    GPIO42_BTUART_RXD,
    GPIO43_BTUART_TXD,
    GPIO44_BTUART_CTS,
    GPIO45_BTUART_RTS,

    /* STUART */
    GPIO46_STUART_RXD,
    GPIO47_STUART_TXD,

    /* MCI controller */
    GPIO32_MMC_CLK,
    GPIO112_MMC_CMD,
    GPIO92_MMC_DAT_0,
    GPIO109_MMC_DAT_1,
    GPIO110_MMC_DAT_2,
    GPIO111_MMC_DAT_3,

    /* LCD */
    GPIOxx_LCD_TFT_16BPP,

    /* QCI */
    GPIO84_CIF_FV,
    GPIO25_CIF_LV,
    GPIO53_CIF_MCLK,
    GPIO54_CIF_PCLK,
    GPIO81_CIF_DD_0,
    GPIO55_CIF_DD_1,
    GPIO51_CIF_DD_2,
    GPIO50_CIF_DD_3,
    GPIO52_CIF_DD_4,
    GPIO48_CIF_DD_5,
    GPIO17_CIF_DD_6,
    GPIO12_CIF_DD_7,

    /* I2C */
    GPIO117_I2C_SCL,
    GPIO118_I2C_SDA,

    /* Keypad */
    GPIO100_KP_MKIN_0   | WAKEUP_ON_LEVEL_HIGH,
    GPIO101_KP_MKIN_1   | WAKEUP_ON_LEVEL_HIGH,
    GPIO102_KP_MKIN_2   | WAKEUP_ON_LEVEL_HIGH,
    GPIO34_KP_MKIN_3    | WAKEUP_ON_LEVEL_HIGH,
    GPIO39_KP_MKIN_4    | WAKEUP_ON_LEVEL_HIGH,
    GPIO99_KP_MKIN_5    | WAKEUP_ON_LEVEL_HIGH,
    GPIO91_KP_MKIN_6    | WAKEUP_ON_LEVEL_HIGH,
    GPIO36_KP_MKIN_7    | WAKEUP_ON_LEVEL_HIGH,
    GPIO103_KP_MKOUT_0,
    GPIO104_KP_MKOUT_1,
    GPIO105_KP_MKOUT_2,
    GPIO106_KP_MKOUT_3,
    GPIO107_KP_MKOUT_4,
    GPIO108_KP_MKOUT_5,
    GPIO96_KP_MKOUT_6,
    GPIO22_KP_MKOUT_7,

    /* SSP1 */
    GPIO26_SSP1_RXD,
    GPIO23_SSP1_SCLK,
    GPIO24_SSP1_SFRM,
    GPIO57_SSP1_TXD,

    /* SSP2 */
    GPIO19_GPIO,    /* SSP2 clock is used as GPIO for Libertas pin-strap */
    GPIO14_GPIO,
    GPIO89_SSP2_TXD,
    GPIO88_SSP2_RXD,

    /* SDRAM and local bus */
    GPIO15_nCS_1,
    GPIO78_nCS_2,
    GPIO79_nCS_3,
    GPIO80_nCS_4,
    GPIO49_nPWE,
    GPIO18_RDY,

    /* GPIO */
    GPIO1_GPIO | WAKEUP_ON_EDGE_BOTH,   /* sleep/resume button */

    /* power controls */
    GPIO20_GPIO | MFP_LPM_DRIVE_LOW,    /* GPRS_PWEN */
    GPIO115_GPIO    | MFP_LPM_DRIVE_LOW,    /* WLAN_PWEN */

    /* NAND controls */
    GPIO11_GPIO | MFP_LPM_DRIVE_HIGH,   /* NAND CE# */

    /* interrupts */
    GPIO41_GPIO,    /* DM9000 interrupt */
};

static unsigned long em_x270_pin_config[] = {
    GPIO13_GPIO,                /* MMC card detect */
    GPIO16_GPIO,                /* USB hub reset */
    GPIO56_GPIO,                /* NAND Ready/Busy */
    GPIO93_GPIO | MFP_LPM_DRIVE_LOW,    /* Camera reset */
    GPIO95_GPIO,                /* MMC Write protect */
};

static unsigned long exeda_pin_config[] = {
    GPIO10_GPIO,                /* USB hub reset */
    GPIO20_GPIO,                /* NAND Ready/Busy */
    GPIO38_GPIO | MFP_LPM_DRIVE_LOW,    /* SD slot power */
    GPIO95_GPIO,                /* touchpad IRQ */
    GPIO114_GPIO,               /* MMC card detect */
};

#if defined(CONFIG_DM9000) || defined(CONFIG_DM9000_MODULE)
static struct resource em_x270_dm9000_resource[] = {
    [0] = {
        .start = PXA_CS2_PHYS,
        .end   = PXA_CS2_PHYS + 3,
        .flags = IORESOURCE_MEM,
    },
    [1] = {
        .start = PXA_CS2_PHYS + 8,
        .end   = PXA_CS2_PHYS + 8 + 0x3f,
        .flags = IORESOURCE_MEM,
    },
    [2] = {
        .start = EM_X270_ETHIRQ,
        .end   = EM_X270_ETHIRQ,
        .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
    }
};

static struct dm9000_plat_data em_x270_dm9000_platdata = {
    .flags      = DM9000_PLATF_NO_EEPROM,
};

static struct platform_device em_x270_dm9000 = {
    .name       = "dm9000",
    .id     = 0,
    .num_resources  = ARRAY_SIZE(em_x270_dm9000_resource),
    .resource   = em_x270_dm9000_resource,
    .dev        = {
        .platform_data = &em_x270_dm9000_platdata,
    }
};

static void __init em_x270_init_dm9000(void)
{
    em_x270_dm9000_platdata.flags |= dm9000_flags;
    platform_device_register(&em_x270_dm9000);
}
#else
static inline void em_x270_init_dm9000(void) {}
#endif

/* V3020 RTC */
#if defined(CONFIG_RTC_DRV_V3020) || defined(CONFIG_RTC_DRV_V3020_MODULE)
static struct resource em_x270_v3020_resource[] = {
    [0] = {
        .start = PXA_CS4_PHYS,
        .end   = PXA_CS4_PHYS + 3,
        .flags = IORESOURCE_MEM,
    },
};

static struct v3020_platform_data em_x270_v3020_platdata = {
    .leftshift = 0,
};

static struct platform_device em_x270_rtc = {
    .name       = "v3020",
    .num_resources  = ARRAY_SIZE(em_x270_v3020_resource),
    .resource   = em_x270_v3020_resource,
    .id     = -1,
    .dev        = {
        .platform_data = &em_x270_v3020_platdata,
    }
};

static void __init em_x270_init_rtc(void)
{
    platform_device_register(&em_x270_rtc);
}
#else
static inline void em_x270_init_rtc(void) {}
#endif

/* NAND flash */
#if defined(CONFIG_MTD_NAND_PLATFORM) || defined(CONFIG_MTD_NAND_PLATFORM_MODULE)
static inline void nand_cs_on(void)
{
    gpio_set_value(GPIO11_NAND_CS, 0);
}

static void nand_cs_off(void)
{
    dsb();

    gpio_set_value(GPIO11_NAND_CS, 1);
}

/* hardware specific access to control-lines */
static void em_x270_nand_cmd_ctl(struct mtd_info *mtd, int dat,
                 unsigned int ctrl)
{
    struct nand_chip *this = mtd->priv;
    unsigned long nandaddr = (unsigned long)this->IO_ADDR_W;

    dsb();

    if (ctrl & NAND_CTRL_CHANGE) {
        if (ctrl & NAND_ALE)
            nandaddr |=  (1 << 3);
        else
            nandaddr &= ~(1 << 3);
        if (ctrl & NAND_CLE)
            nandaddr |=  (1 << 2);
        else
            nandaddr &= ~(1 << 2);
        if (ctrl & NAND_NCE)
            nand_cs_on();
        else
            nand_cs_off();
    }

    dsb();
    this->IO_ADDR_W = (void __iomem *)nandaddr;
    if (dat != NAND_CMD_NONE)
        writel(dat, this->IO_ADDR_W);

    dsb();
}

/* read device ready pin */
static int em_x270_nand_device_ready(struct mtd_info *mtd)
{
    dsb();

    return gpio_get_value(nand_rb);
}

static struct mtd_partition em_x270_partition_info[] = {
    [0] = {
        .name   = "em_x270-0",
        .offset = 0,
        .size   = SZ_4M,
    },
    [1] = {
        .name   = "em_x270-1",
        .offset = MTDPART_OFS_APPEND,
        .size   = MTDPART_SIZ_FULL
    },
};

struct platform_nand_data em_x270_nand_platdata = {
    .chip = {
        .nr_chips = 1,
        .chip_offset = 0,
        .nr_partitions = ARRAY_SIZE(em_x270_partition_info),
        .partitions = em_x270_partition_info,
        .chip_delay = 20,
    },
    .ctrl = {
        .hwcontrol = 0,
        .dev_ready = em_x270_nand_device_ready,
        .select_chip = 0,
        .cmd_ctrl = em_x270_nand_cmd_ctl,
    },
};

static struct resource em_x270_nand_resource[] = {
    [0] = {
        .start = PXA_CS1_PHYS,
        .end   = PXA_CS1_PHYS + 12,
        .flags = IORESOURCE_MEM,
    },
};

static struct platform_device em_x270_nand = {
    .name       = "gen_nand",
    .num_resources  = ARRAY_SIZE(em_x270_nand_resource),
    .resource   = em_x270_nand_resource,
    .id     = -1,
    .dev        = {
        .platform_data = &em_x270_nand_platdata,
    }
};

static void __init em_x270_init_nand(void)
{
    int err;

    err = gpio_request(GPIO11_NAND_CS, "NAND CS");
    if (err) {
        pr_warning("EM-X270: failed to request NAND CS gpio\n");
        return;
    }

    gpio_direction_output(GPIO11_NAND_CS, 1);

    err = gpio_request(nand_rb, "NAND R/B");
    if (err) {
        pr_warning("EM-X270: failed to request NAND R/B gpio\n");
        gpio_free(GPIO11_NAND_CS);
        return;
    }

    gpio_direction_input(nand_rb);

    platform_device_register(&em_x270_nand);
}
#else
static inline void em_x270_init_nand(void) {}
#endif

#if defined(CONFIG_MTD_PHYSMAP) || defined(CONFIG_MTD_PHYSMAP_MODULE)
static struct mtd_partition em_x270_nor_parts[] = {
    {
        .name =     "Bootloader",
        .offset =   0x00000000,
        .size =     0x00050000,
        .mask_flags =   MTD_WRITEABLE  /* force read-only */
    }, {
        .name =     "Environment",
        .offset =   0x00050000,
        .size =     0x00010000,
    }, {
        .name =     "Reserved",
        .offset =   0x00060000,
        .size =     0x00050000,
        .mask_flags =   MTD_WRITEABLE  /* force read-only */
    }, {
        .name =     "Splashscreen",
        .offset =   0x000b0000,
        .size =     0x00050000,
    }
};

static struct physmap_flash_data em_x270_nor_data[] = {
    [0] = {
        .width = 2,
        .parts = em_x270_nor_parts,
        .nr_parts = ARRAY_SIZE(em_x270_nor_parts),
    },
};

static struct resource em_x270_nor_flash_resource = {
    .start  = PXA_CS0_PHYS,
    .end    = PXA_CS0_PHYS + SZ_1M - 1,
    .flags  = IORESOURCE_MEM,
};

static struct platform_device em_x270_physmap_flash = {
    .name       = "physmap-flash",
    .id     = 0,
    .num_resources  = 1,
    .resource   = &em_x270_nor_flash_resource,
    .dev        = {
        .platform_data  = &em_x270_nor_data,
    },
};

static void __init em_x270_init_nor(void)
{
    platform_device_register(&em_x270_physmap_flash);
}
#else
static inline void em_x270_init_nor(void) {}
#endif

/* PXA27x OHCI controller setup */
#if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
static struct regulator *em_x270_usb_ldo;

static int em_x270_usb_hub_init(void)
{
    int err;

    em_x270_usb_ldo = regulator_get(NULL, "vcc usb");
    if (IS_ERR(em_x270_usb_ldo))
        return PTR_ERR(em_x270_usb_ldo);

    err = gpio_request(GPIO9_USB_VBUS_EN, "vbus en");
    if (err)
        goto err_free_usb_ldo;

    err = gpio_request(usb_hub_reset, "hub rst");
    if (err)
        goto err_free_vbus_gpio;

    /* USB Hub power-on and reset */
    gpio_direction_output(usb_hub_reset, 1);
    gpio_direction_output(GPIO9_USB_VBUS_EN, 0);
    regulator_enable(em_x270_usb_ldo);
    gpio_set_value(usb_hub_reset, 0);
    gpio_set_value(usb_hub_reset, 1);
    regulator_disable(em_x270_usb_ldo);
    regulator_enable(em_x270_usb_ldo);
    gpio_set_value(usb_hub_reset, 0);
    gpio_set_value(GPIO9_USB_VBUS_EN, 1);

    return 0;

err_free_vbus_gpio:
    gpio_free(GPIO9_USB_VBUS_EN);
err_free_usb_ldo:
    regulator_put(em_x270_usb_ldo);

    return err;
}

static int em_x270_ohci_init(struct device *dev)
{
    int err;

    /* we don't want to entirely disable USB if the HUB init failed */
    err = em_x270_usb_hub_init();
    if (err)
        pr_err("USB Hub initialization failed: %d\n", err);

    /* enable port 2 transiever */
    UP2OCR = UP2OCR_HXS | UP2OCR_HXOE;

    return 0;
}

static void em_x270_ohci_exit(struct device *dev)
{
    gpio_free(usb_hub_reset);
    gpio_free(GPIO9_USB_VBUS_EN);

    if (!IS_ERR(em_x270_usb_ldo)) {
        if (regulator_is_enabled(em_x270_usb_ldo))
            regulator_disable(em_x270_usb_ldo);

        regulator_put(em_x270_usb_ldo);
    }
}

static struct pxaohci_platform_data em_x270_ohci_platform_data = {
    .port_mode  = PMM_PERPORT_MODE,
    .flags      = ENABLE_PORT1 | ENABLE_PORT2 | POWER_CONTROL_LOW,
    .init       = em_x270_ohci_init,
    .exit       = em_x270_ohci_exit,
};

static void __init em_x270_init_ohci(void)
{
    pxa_set_ohci_info(&em_x270_ohci_platform_data);
}
#else
static inline void em_x270_init_ohci(void) {}
#endif

/* MCI controller setup */
#if defined(CONFIG_MMC) || defined(CONFIG_MMC_MODULE)
static struct regulator *em_x270_sdio_ldo;

static int em_x270_mci_init(struct device *dev,
                irq_handler_t em_x270_detect_int,
                void *data)
{
    int err;

    em_x270_sdio_ldo = regulator_get(dev, "vcc sdio");
    if (IS_ERR(em_x270_sdio_ldo)) {
        dev_err(dev, "can't request SDIO power supply: %ld\n",
            PTR_ERR(em_x270_sdio_ldo));
        return PTR_ERR(em_x270_sdio_ldo);
    }

    err = request_irq(gpio_to_irq(mmc_cd), em_x270_detect_int,
                  IRQF_DISABLED | IRQF_TRIGGER_RISING |
                  IRQF_TRIGGER_FALLING,
                  "MMC card detect", data);
    if (err) {
        dev_err(dev, "can't request MMC card detect IRQ: %d\n", err);
        goto err_irq;
    }

    if (machine_is_em_x270()) {
        err = gpio_request(GPIO95_MMC_WP, "MMC WP");
        if (err) {
            dev_err(dev, "can't request MMC write protect: %d\n",
                err);
            goto err_gpio_wp;
        }
        gpio_direction_input(GPIO95_MMC_WP);
    } else {
        err = gpio_request(GPIO38_SD_PWEN, "sdio power");
        if (err) {
            dev_err(dev, "can't request MMC power control : %d\n",
                err);
            goto err_gpio_wp;
        }
        gpio_direction_output(GPIO38_SD_PWEN, 1);
    }

    return 0;

err_gpio_wp:
    free_irq(gpio_to_irq(mmc_cd), data);
err_irq:
    regulator_put(em_x270_sdio_ldo);

    return err;
}

static void em_x270_mci_setpower(struct device *dev, unsigned int vdd)
{
    struct pxamci_platform_data* p_d = dev->platform_data;

    if ((1 << vdd) & p_d->ocr_mask) {
        int vdd_uV = (2000 + (vdd - __ffs(MMC_VDD_20_21)) * 100) * 1000;

        regulator_set_voltage(em_x270_sdio_ldo, vdd_uV, vdd_uV);
        regulator_enable(em_x270_sdio_ldo);
    } else {
        regulator_disable(em_x270_sdio_ldo);
    }
}

static void em_x270_mci_exit(struct device *dev, void *data)
{
    free_irq(gpio_to_irq(mmc_cd), data);
    regulator_put(em_x270_sdio_ldo);

    if (machine_is_em_x270())
        gpio_free(GPIO95_MMC_WP);
    else
        gpio_free(GPIO38_SD_PWEN);
}

static int em_x270_mci_get_ro(struct device *dev)
{
    return gpio_get_value(GPIO95_MMC_WP);
}

static struct pxamci_platform_data em_x270_mci_platform_data = {
    .detect_delay_ms    = 250,
    .ocr_mask       = MMC_VDD_20_21|MMC_VDD_21_22|MMC_VDD_22_23|
                  MMC_VDD_24_25|MMC_VDD_25_26|MMC_VDD_26_27|
                  MMC_VDD_27_28|MMC_VDD_28_29|MMC_VDD_29_30|
                  MMC_VDD_30_31|MMC_VDD_31_32,
    .init           = em_x270_mci_init,
    .setpower       = em_x270_mci_setpower,
    .exit           = em_x270_mci_exit,
    .gpio_card_detect   = -1,
    .gpio_card_ro       = -1,
    .gpio_power     = -1,
};

static void __init em_x270_init_mmc(void)
{
    if (machine_is_em_x270())
        em_x270_mci_platform_data.get_ro = em_x270_mci_get_ro;

    pxa_set_mci_info(&em_x270_mci_platform_data);
}
#else
static inline void em_x270_init_mmc(void) {}
#endif

/* LCD */
#if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
static struct pxafb_mode_info em_x270_lcd_modes[] = {
    [0] = {
        .pixclock   = 38250,
        .bpp        = 16,
        .xres       = 480,
        .yres       = 640,
        .hsync_len  = 8,
        .vsync_len  = 2,
        .left_margin    = 8,
        .upper_margin   = 2,
        .right_margin   = 24,
        .lower_margin   = 4,
        .sync       = 0,
    },
    [1] = {
        .pixclock       = 153800,
        .bpp        = 16,
        .xres       = 240,
        .yres       = 320,
        .hsync_len  = 8,
        .vsync_len  = 2,
        .left_margin    = 8,
        .upper_margin   = 2,
        .right_margin   = 88,
        .lower_margin   = 2,
        .sync       = 0,
    },
};

static struct pxafb_mach_info em_x270_lcd = {
    .modes      = em_x270_lcd_modes,
    .num_modes  = 2,
    .lcd_conn   = LCD_COLOR_TFT_16BPP,
};

static void __init em_x270_init_lcd(void)
{
    pxa_set_fb_info(NULL, &em_x270_lcd);
}
#else
static inline void em_x270_init_lcd(void) {}
#endif

#if defined(CONFIG_SPI_PXA2XX) || defined(CONFIG_SPI_PXA2XX_MODULE)
static struct pxa2xx_spi_master em_x270_spi_info = {
    .num_chipselect = 1,
};

static struct pxa2xx_spi_chip em_x270_tdo24m_chip = {
    .rx_threshold   = 1,
    .tx_threshold   = 1,
    .gpio_cs    = -1,
};

static struct tdo24m_platform_data em_x270_tdo24m_pdata = {
    .model = TDO35S,
};

static struct pxa2xx_spi_master em_x270_spi_2_info = {
    .num_chipselect = 1,
    .enable_dma = 1,
};

static struct pxa2xx_spi_chip em_x270_libertas_chip = {
    .rx_threshold   = 1,
    .tx_threshold   = 1,
    .timeout    = 1000,
    .gpio_cs    = 14,
};

static unsigned long em_x270_libertas_pin_config[] = {
    /* SSP2 */
    GPIO19_SSP2_SCLK,
    GPIO14_GPIO,
    GPIO89_SSP2_TXD,
    GPIO88_SSP2_RXD,
};

static int em_x270_libertas_setup(struct spi_device *spi)
{
    int err = gpio_request(GPIO115_WLAN_PWEN, "WLAN PWEN");
    if (err)
        return err;

    err = gpio_request(GPIO19_WLAN_STRAP, "WLAN STRAP");
    if (err)
        goto err_free_pwen;

    if (machine_is_exeda()) {
        err = gpio_request(GPIO37_WLAN_RST, "WLAN RST");
        if (err)
            goto err_free_strap;

        gpio_direction_output(GPIO37_WLAN_RST, 1);
        msleep(100);
    }

    gpio_direction_output(GPIO19_WLAN_STRAP, 1);
    msleep(100);

    pxa2xx_mfp_config(ARRAY_AND_SIZE(em_x270_libertas_pin_config));

    gpio_direction_output(GPIO115_WLAN_PWEN, 0);
    msleep(100);
    gpio_set_value(GPIO115_WLAN_PWEN, 1);
    msleep(100);

    spi->bits_per_word = 16;
    spi_setup(spi);

    return 0;

err_free_strap:
    gpio_free(GPIO19_WLAN_STRAP);
err_free_pwen:
    gpio_free(GPIO115_WLAN_PWEN);

    return err;
}

static int em_x270_libertas_teardown(struct spi_device *spi)
{
    gpio_set_value(GPIO115_WLAN_PWEN, 0);
    gpio_free(GPIO115_WLAN_PWEN);
    gpio_free(GPIO19_WLAN_STRAP);

    if (machine_is_exeda()) {
        gpio_set_value(GPIO37_WLAN_RST, 0);
        gpio_free(GPIO37_WLAN_RST);
    }

    return 0;
}

struct libertas_spi_platform_data em_x270_libertas_pdata = {
    .use_dummy_writes   = 1,
    .setup          = em_x270_libertas_setup,
    .teardown       = em_x270_libertas_teardown,
};

static struct spi_board_info em_x270_spi_devices[] __initdata = {
    {
        .modalias       = "tdo24m",
        .max_speed_hz       = 1000000,
        .bus_num        = 1,
        .chip_select        = 0,
        .controller_data    = &em_x270_tdo24m_chip,
        .platform_data      = &em_x270_tdo24m_pdata,
    },
    {
        .modalias       = "libertas_spi",
        .max_speed_hz       = 13000000,
        .bus_num        = 2,
        .irq            = PXA_GPIO_TO_IRQ(116),
        .chip_select        = 0,
        .controller_data    = &em_x270_libertas_chip,
        .platform_data      = &em_x270_libertas_pdata,
    },
};

static void __init em_x270_init_spi(void)
{
    pxa2xx_set_spi_info(1, &em_x270_spi_info);
    pxa2xx_set_spi_info(2, &em_x270_spi_2_info);
    spi_register_board_info(ARRAY_AND_SIZE(em_x270_spi_devices));
}
#else
static inline void em_x270_init_spi(void) {}
#endif

#if defined(CONFIG_SND_PXA2XX_LIB_AC97)
static pxa2xx_audio_ops_t em_x270_ac97_info = {
    .reset_gpio = 113,
};

static void __init em_x270_init_ac97(void)
{
    pxa_set_ac97_info(&em_x270_ac97_info);
}
#else
static inline void em_x270_init_ac97(void) {}
#endif

#if defined(CONFIG_KEYBOARD_PXA27x) || defined(CONFIG_KEYBOARD_PXA27x_MODULE)
static unsigned int em_x270_module_matrix_keys[] = {
    KEY(0, 0, KEY_A), KEY(1, 0, KEY_UP), KEY(2, 1, KEY_B),
    KEY(0, 2, KEY_LEFT), KEY(1, 1, KEY_ENTER), KEY(2, 0, KEY_RIGHT),
    KEY(0, 1, KEY_C), KEY(1, 2, KEY_DOWN), KEY(2, 2, KEY_D),
};

struct pxa27x_keypad_platform_data em_x270_module_keypad_info = {
    /* code map for the matrix keys */
    .matrix_key_rows    = 3,
    .matrix_key_cols    = 3,
    .matrix_key_map     = em_x270_module_matrix_keys,
    .matrix_key_map_size    = ARRAY_SIZE(em_x270_module_matrix_keys),
};

static unsigned int em_x270_exeda_matrix_keys[] = {
    KEY(0, 0, KEY_RIGHTSHIFT), KEY(0, 1, KEY_RIGHTCTRL),
    KEY(0, 2, KEY_RIGHTALT), KEY(0, 3, KEY_SPACE),
    KEY(0, 4, KEY_LEFTALT), KEY(0, 5, KEY_LEFTCTRL),
    KEY(0, 6, KEY_ENTER), KEY(0, 7, KEY_SLASH),

    KEY(1, 0, KEY_DOT), KEY(1, 1, KEY_M),
    KEY(1, 2, KEY_N), KEY(1, 3, KEY_B),
    KEY(1, 4, KEY_V), KEY(1, 5, KEY_C),
    KEY(1, 6, KEY_X), KEY(1, 7, KEY_Z),

    KEY(2, 0, KEY_LEFTSHIFT), KEY(2, 1, KEY_SEMICOLON),
    KEY(2, 2, KEY_L), KEY(2, 3, KEY_K),
    KEY(2, 4, KEY_J), KEY(2, 5, KEY_H),
    KEY(2, 6, KEY_G), KEY(2, 7, KEY_F),

    KEY(3, 0, KEY_D), KEY(3, 1, KEY_S),
    KEY(3, 2, KEY_A), KEY(3, 3, KEY_TAB),
    KEY(3, 4, KEY_BACKSPACE), KEY(3, 5, KEY_P),
    KEY(3, 6, KEY_O), KEY(3, 7, KEY_I),

    KEY(4, 0, KEY_U), KEY(4, 1, KEY_Y),
    KEY(4, 2, KEY_T), KEY(4, 3, KEY_R),
    KEY(4, 4, KEY_E), KEY(4, 5, KEY_W),
    KEY(4, 6, KEY_Q), KEY(4, 7, KEY_MINUS),

    KEY(5, 0, KEY_0), KEY(5, 1, KEY_9),
    KEY(5, 2, KEY_8), KEY(5, 3, KEY_7),
    KEY(5, 4, KEY_6), KEY(5, 5, KEY_5),
    KEY(5, 6, KEY_4), KEY(5, 7, KEY_3),

    KEY(6, 0, KEY_2), KEY(6, 1, KEY_1),
    KEY(6, 2, KEY_ENTER), KEY(6, 3, KEY_END),
    KEY(6, 4, KEY_DOWN), KEY(6, 5, KEY_UP),
    KEY(6, 6, KEY_MENU), KEY(6, 7, KEY_F1),

    KEY(7, 0, KEY_LEFT), KEY(7, 1, KEY_RIGHT),
    KEY(7, 2, KEY_BACK), KEY(7, 3, KEY_HOME),
    KEY(7, 4, 0), KEY(7, 5, 0),
    KEY(7, 6, 0), KEY(7, 7, 0),
};

struct pxa27x_keypad_platform_data em_x270_exeda_keypad_info = {
    /* code map for the matrix keys */
    .matrix_key_rows    = 8,
    .matrix_key_cols    = 8,
    .matrix_key_map     = em_x270_exeda_matrix_keys,
    .matrix_key_map_size    = ARRAY_SIZE(em_x270_exeda_matrix_keys),
};

static void __init em_x270_init_keypad(void)
{
    if (machine_is_em_x270())
        pxa_set_keypad_info(&em_x270_module_keypad_info);
    else
        pxa_set_keypad_info(&em_x270_exeda_keypad_info);
}
#else
static inline void em_x270_init_keypad(void) {}
#endif

#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
static struct gpio_keys_button gpio_keys_button[] = {
    [0] = {
        .desc   = "sleep/wakeup",
        .code   = KEY_SUSPEND,
        .type   = EV_PWR,
        .gpio   = 1,
        .wakeup = 1,
    },
};

static struct gpio_keys_platform_data em_x270_gpio_keys_data = {
    .buttons    = gpio_keys_button,
    .nbuttons   = 1,
};

static struct platform_device em_x270_gpio_keys = {
    .name       = "gpio-keys",
    .id     = -1,
    .dev        = {
        .platform_data  = &em_x270_gpio_keys_data,
    },
};

static void __init em_x270_init_gpio_keys(void)
{
    platform_device_register(&em_x270_gpio_keys);
}
#else
static inline void em_x270_init_gpio_keys(void) {}
#endif

/* Quick Capture Interface and sensor setup */
#if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE)
static struct regulator *em_x270_camera_ldo;

static int em_x270_sensor_init(void)
{
    int ret;

    ret = gpio_request(cam_reset, "camera reset");
    if (ret)
        return ret;

    gpio_direction_output(cam_reset, 0);

    em_x270_camera_ldo = regulator_get(NULL, "vcc cam");
    if (em_x270_camera_ldo == NULL) {
        gpio_free(cam_reset);
        return -ENODEV;
    }

    ret = regulator_enable(em_x270_camera_ldo);
    if (ret) {
        regulator_put(em_x270_camera_ldo);
        gpio_free(cam_reset);
        return ret;
    }

    gpio_set_value(cam_reset, 1);

    return 0;
}

struct pxacamera_platform_data em_x270_camera_platform_data = {
    .flags  = PXA_CAMERA_MASTER | PXA_CAMERA_DATAWIDTH_8 |
        PXA_CAMERA_PCLK_EN | PXA_CAMERA_MCLK_EN,
    .mclk_10khz = 2600,
};

static int em_x270_sensor_power(struct device *dev, int on)
{
    int ret;
    int is_on = regulator_is_enabled(em_x270_camera_ldo);

    if (on == is_on)
        return 0;

    gpio_set_value(cam_reset, !on);

    if (on)
        ret = regulator_enable(em_x270_camera_ldo);
    else
        ret = regulator_disable(em_x270_camera_ldo);

    if (ret)
        return ret;

    gpio_set_value(cam_reset, on);

    return 0;
}

static struct i2c_board_info em_x270_i2c_cam_info[] = {
    {
        I2C_BOARD_INFO("mt9m111", 0x48),
    },
};

static struct soc_camera_link iclink = {
    .bus_id     = 0,
    .power      = em_x270_sensor_power,
    .board_info = &em_x270_i2c_cam_info[0],
    .i2c_adapter_id = 0,
};

static struct platform_device em_x270_camera = {
    .name   = "soc-camera-pdrv",
    .id = -1,
    .dev    = {
        .platform_data = &iclink,
    },
};

static void  __init em_x270_init_camera(void)
{
    if (em_x270_sensor_init() == 0) {
        pxa_set_camera_info(&em_x270_camera_platform_data);
        platform_device_register(&em_x270_camera);
    }
}
#else
static inline void em_x270_init_camera(void) {}
#endif

static struct regulator_bulk_data em_x270_gps_consumer_supply = {
    .supply     = "vcc gps",
};

static struct regulator_userspace_consumer_data em_x270_gps_consumer_data = {
    .name       = "vcc gps",
    .num_supplies   = 1,
    .supplies   = &em_x270_gps_consumer_supply,
};

static struct platform_device em_x270_gps_userspace_consumer = {
    .name       = "reg-userspace-consumer",
    .id     = 0,
    .dev        = {
        .platform_data = &em_x270_gps_consumer_data,
    },
};

static struct regulator_bulk_data em_x270_gprs_consumer_supply = {
    .supply     = "vcc gprs",
};

static struct regulator_userspace_consumer_data em_x270_gprs_consumer_data = {
    .name       = "vcc gprs",
    .num_supplies   = 1,
    .supplies   = &em_x270_gprs_consumer_supply
};

static struct platform_device em_x270_gprs_userspace_consumer = {
    .name       = "reg-userspace-consumer",
    .id     = 1,
    .dev        = {
        .platform_data = &em_x270_gprs_consumer_data,
    }
};

static struct platform_device *em_x270_userspace_consumers[] = {
    &em_x270_gps_userspace_consumer,
    &em_x270_gprs_userspace_consumer,
};

static void __init em_x270_userspace_consumers_init(void)
{
    platform_add_devices(ARRAY_AND_SIZE(em_x270_userspace_consumers));
}

/* DA9030 related initializations */
#define REGULATOR_CONSUMER(_name, _dev_name, _supply)               \
    static struct regulator_consumer_supply _name##_consumers[] = { \
        REGULATOR_SUPPLY(_supply, _dev_name),           \
    }

REGULATOR_CONSUMER(ldo3, "reg-userspace-consumer.0", "vcc gps");
REGULATOR_CONSUMER(ldo5, NULL, "vcc cam");
REGULATOR_CONSUMER(ldo10, "pxa2xx-mci", "vcc sdio");
REGULATOR_CONSUMER(ldo12, NULL, "vcc usb");
REGULATOR_CONSUMER(ldo19, "reg-userspace-consumer.1", "vcc gprs");
REGULATOR_CONSUMER(buck2, NULL, "vcc_core");

#define REGULATOR_INIT(_ldo, _min_uV, _max_uV, _ops_mask)       \
    static struct regulator_init_data _ldo##_data = {       \
        .constraints = {                    \
            .min_uV = _min_uV,              \
            .max_uV = _max_uV,              \
            .state_mem = {                  \
                .enabled = 0,               \
            },                      \
            .valid_ops_mask = _ops_mask,            \
            .apply_uV = 1,                  \
        },                          \
        .num_consumer_supplies = ARRAY_SIZE(_ldo##_consumers),  \
        .consumer_supplies = _ldo##_consumers,          \
    };

REGULATOR_INIT(ldo3, 3200000, 3200000, REGULATOR_CHANGE_STATUS);
REGULATOR_INIT(ldo5, 3000000, 3000000, REGULATOR_CHANGE_STATUS);
REGULATOR_INIT(ldo10, 2000000, 3200000,
           REGULATOR_CHANGE_STATUS | REGULATOR_CHANGE_VOLTAGE);
REGULATOR_INIT(ldo12, 3000000, 3000000, REGULATOR_CHANGE_STATUS);
REGULATOR_INIT(ldo19, 3200000, 3200000, REGULATOR_CHANGE_STATUS);
REGULATOR_INIT(buck2, 1000000, 1650000, REGULATOR_CHANGE_VOLTAGE);

struct led_info em_x270_led_info = {
    .name = "em-x270:orange",
    .default_trigger = "battery-charging-or-full",
};

struct power_supply_info em_x270_psy_info = {
    .name = "battery",
    .technology = POWER_SUPPLY_TECHNOLOGY_LIPO,
    .voltage_max_design = 4200000,
    .voltage_min_design = 3000000,
    .use_for_apm = 1,
};

static void em_x270_battery_low(void)
{
#if defined(CONFIG_APM_EMULATION)
    apm_queue_event(APM_LOW_BATTERY);
#endif
}

static void em_x270_battery_critical(void)
{
#if defined(CONFIG_APM_EMULATION)
    apm_queue_event(APM_CRITICAL_SUSPEND);
#endif
}

struct da9030_battery_info em_x270_batterty_info = {
    .battery_info = &em_x270_psy_info,

    .charge_milliamp = 1000,
    .charge_millivolt = 4200,

    .vbat_low = 3600,
    .vbat_crit = 3400,
    .vbat_charge_start = 4100,
    .vbat_charge_stop = 4200,
    .vbat_charge_restart = 4000,

    .vcharge_min = 3200,
    .vcharge_max = 5500,

    .tbat_low = 197,
    .tbat_high = 78,
    .tbat_restart = 100,

    .batmon_interval = 0,

    .battery_low = em_x270_battery_low,
    .battery_critical = em_x270_battery_critical,
};

#define DA9030_SUBDEV(_name, _id, _pdata)   \
    {                   \
        .name = "da903x-" #_name,   \
        .id = DA9030_ID_##_id,      \
        .platform_data = _pdata,    \
    }

#define DA9030_LDO(num) DA9030_SUBDEV(regulator, LDO##num, &ldo##num##_data)

struct da903x_subdev_info em_x270_da9030_subdevs[] = {
    DA9030_LDO(3),
    DA9030_LDO(5),
    DA9030_LDO(10),
    DA9030_LDO(12),
    DA9030_LDO(19),

    DA9030_SUBDEV(regulator, BUCK2, &buck2_data),

    DA9030_SUBDEV(led, LED_PC, &em_x270_led_info),
    DA9030_SUBDEV(backlight, WLED, &em_x270_led_info),
    DA9030_SUBDEV(battery, BAT, &em_x270_batterty_info),
};

static struct da903x_platform_data em_x270_da9030_info = {
    .num_subdevs = ARRAY_SIZE(em_x270_da9030_subdevs),
    .subdevs = em_x270_da9030_subdevs,
};

static struct i2c_board_info em_x270_i2c_pmic_info = {
    I2C_BOARD_INFO("da9030", 0x49),
    .irq = PXA_GPIO_TO_IRQ(0),
    .platform_data = &em_x270_da9030_info,
};

static struct i2c_pxa_platform_data em_x270_pwr_i2c_info = {
    .use_pio = 1,
};

static void __init em_x270_init_da9030(void)
{
    pxa27x_set_i2c_power_info(&em_x270_pwr_i2c_info);
    i2c_register_board_info(1, &em_x270_i2c_pmic_info, 1);
}

static struct pca953x_platform_data exeda_gpio_ext_pdata = {
    .gpio_base = 128,
};

static struct i2c_board_info exeda_i2c_info[] = {
    {
        I2C_BOARD_INFO("pca9555", 0x21),
        .platform_data = &exeda_gpio_ext_pdata,
    },
};

static struct i2c_pxa_platform_data em_x270_i2c_info = {
    .fast_mode = 1,
};

static void __init em_x270_init_i2c(void)
{
    pxa_set_i2c_info(&em_x270_i2c_info);

    if (machine_is_exeda())
        i2c_register_board_info(0, ARRAY_AND_SIZE(exeda_i2c_info));
}

static void __init em_x270_module_init(void)
{
    pxa2xx_mfp_config(ARRAY_AND_SIZE(em_x270_pin_config));

    mmc_cd = GPIO13_MMC_CD;
    nand_rb = GPIO56_NAND_RB;
    dm9000_flags = DM9000_PLATF_32BITONLY;
    cam_reset = GPIO93_CAM_RESET;
    usb_hub_reset = GPIO16_USB_HUB_RESET;
}

static void __init em_x270_exeda_init(void)
{
    pxa2xx_mfp_config(ARRAY_AND_SIZE(exeda_pin_config));

    mmc_cd = GPIO114_MMC_CD;
    nand_rb = GPIO20_NAND_RB;
    dm9000_flags = DM9000_PLATF_16BITONLY;
    cam_reset = GPIO130_CAM_RESET;
    usb_hub_reset = GPIO10_USB_HUB_RESET;
}

static void __init em_x270_init(void)
{
    pxa2xx_mfp_config(ARRAY_AND_SIZE(common_pin_config));

    pxa_set_ffuart_info(NULL);
    pxa_set_btuart_info(NULL);
    pxa_set_stuart_info(NULL);

#ifdef CONFIG_PM
    pxa27x_set_pwrmode(PWRMODE_DEEPSLEEP);
#endif

    if (machine_is_em_x270())
        em_x270_module_init();
    else if (machine_is_exeda())
        em_x270_exeda_init();
    else
        panic("Unsupported machine: %d\n", machine_arch_type);

    em_x270_init_da9030();
    em_x270_init_dm9000();
    em_x270_init_rtc();
    em_x270_init_nand();
    em_x270_init_nor();
    em_x270_init_lcd();
    em_x270_init_mmc();
    em_x270_init_ohci();
    em_x270_init_keypad();
    em_x270_init_gpio_keys();
    em_x270_init_ac97();
    em_x270_init_spi();
    em_x270_init_i2c();
    em_x270_init_camera();
    em_x270_userspace_consumers_init();
}

MACHINE_START(EM_X270, "Compulab EM-X270")
    .atag_offset    = 0x100,
    .map_io     = pxa27x_map_io,
    .nr_irqs    = PXA_NR_IRQS,
    .init_irq   = pxa27x_init_irq,
    .handle_irq = pxa27x_handle_irq,
    .timer      = &pxa_timer,
    .init_machine   = em_x270_init,
    .restart    = pxa_restart,
MACHINE_END

MACHINE_START(EXEDA, "Compulab eXeda")
    .atag_offset    = 0x100,
    .map_io     = pxa27x_map_io,
    .nr_irqs    = PXA_NR_IRQS,
    .init_irq   = pxa27x_init_irq,
    .handle_irq = pxa27x_handle_irq,
    .timer      = &pxa_timer,
    .init_machine   = em_x270_init,
    .restart    = pxa_restart,
MACHINE_END