raumfeld.c

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/*
 * arch/arm/mach-pxa/raumfeld.c
 *
 * Support for the following Raumfeld devices:
 *
 *  * Controller
 *      * Connector
 *      * Speaker S/M
 *
 * See http://www.raumfeld.com for details.
 *
 * Copyright (c) 2009 Daniel Mack <[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/init.h>
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/interrupt.h>
#include <linux/gpio.h>
#include <linux/smsc911x.h>
#include <linux/input.h>
#include <linux/rotary_encoder.h>
#include <linux/gpio_keys.h>
#include <linux/input/eeti_ts.h>
#include <linux/leds.h>
#include <linux/w1-gpio.h>
#include <linux/sched.h>
#include <linux/pwm_backlight.h>
#include <linux/i2c.h>
#include <linux/i2c/pxa-i2c.h>
#include <linux/spi/spi.h>
#include <linux/spi/spi_gpio.h>
#include <linux/lis3lv02d.h>
#include <linux/pda_power.h>
#include <linux/power_supply.h>
#include <linux/regulator/max8660.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/fixed.h>
#include <linux/regulator/consumer.h>
#include <linux/delay.h>

#include <asm/system_info.h>

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

#include <mach/pxa300.h>
#include <linux/platform_data/usb-ohci-pxa27x.h>
#include <linux/platform_data/video-pxafb.h>
#include <linux/platform_data/mmc-pxamci.h>
#include <linux/platform_data/mtd-nand-pxa3xx.h>

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

/* common GPIO  definitions */

/* inputs */
#define GPIO_ON_OFF     (14)
#define GPIO_VOLENC_A       (19)
#define GPIO_VOLENC_B       (20)
#define GPIO_CHARGE_DONE    (23)
#define GPIO_CHARGE_IND     (27)
#define GPIO_TOUCH_IRQ      (32)
#define GPIO_ETH_IRQ        (40)
#define GPIO_SPI_MISO       (98)
#define GPIO_ACCEL_IRQ      (104)
#define GPIO_RESCUE_BOOT    (115)
#define GPIO_DOCK_DETECT    (116)
#define GPIO_KEY1       (117)
#define GPIO_KEY2       (118)
#define GPIO_KEY3       (119)
#define GPIO_CHARGE_USB_OK  (112)
#define GPIO_CHARGE_DC_OK   (101)
#define GPIO_CHARGE_USB_SUSP    (102)

/* outputs */
#define GPIO_SHUTDOWN_SUPPLY    (16)
#define GPIO_SHUTDOWN_BATT  (18)
#define GPIO_CHRG_PEN2      (31)
#define GPIO_TFT_VA_EN      (33)
#define GPIO_SPDIF_CS       (34)
#define GPIO_LED2       (35)
#define GPIO_LED1       (36)
#define GPIO_SPDIF_RESET    (38)
#define GPIO_SPI_CLK        (95)
#define GPIO_MCLK_DAC_CS    (96)
#define GPIO_SPI_MOSI       (97)
#define GPIO_W1_PULLUP_ENABLE   (105)
#define GPIO_DISPLAY_ENABLE (106)
#define GPIO_MCLK_RESET     (111)
#define GPIO_W2W_RESET      (113)
#define GPIO_W2W_PDN        (114)
#define GPIO_CODEC_RESET    (120)
#define GPIO_AUDIO_VA_ENABLE    (124)
#define GPIO_ACCEL_CS       (125)
#define GPIO_ONE_WIRE       (126)

/*
 * GPIO configurations
 */
static mfp_cfg_t raumfeld_controller_pin_config[] __initdata = {
    /* UART1 */
    GPIO77_UART1_RXD,
    GPIO78_UART1_TXD,
    GPIO79_UART1_CTS,
    GPIO81_UART1_DSR,
    GPIO83_UART1_DTR,
    GPIO84_UART1_RTS,

    /* UART3 */
    GPIO110_UART3_RXD,

    /* USB Host */
    GPIO0_2_USBH_PEN,
    GPIO1_2_USBH_PWR,

    /* I2C */
    GPIO21_I2C_SCL | MFP_LPM_FLOAT | MFP_PULL_FLOAT,
    GPIO22_I2C_SDA | MFP_LPM_FLOAT | MFP_PULL_FLOAT,

    /* SPI */
    GPIO34_GPIO,    /* SPDIF_CS */
    GPIO96_GPIO,    /* MCLK_CS */
    GPIO125_GPIO,   /* ACCEL_CS */

    /* MMC */
    GPIO3_MMC1_DAT0,
    GPIO4_MMC1_DAT1,
    GPIO5_MMC1_DAT2,
    GPIO6_MMC1_DAT3,
    GPIO7_MMC1_CLK,
    GPIO8_MMC1_CMD,

    /* One-wire */
    GPIO126_GPIO | MFP_LPM_FLOAT,
    GPIO105_GPIO | MFP_PULL_LOW | MFP_LPM_PULL_LOW,

    /* CHRG_USB_OK */
    GPIO101_GPIO | MFP_PULL_HIGH,
    /* CHRG_USB_OK */
    GPIO112_GPIO | MFP_PULL_HIGH,
    /* CHRG_USB_SUSP */
    GPIO102_GPIO,
    /* DISPLAY_ENABLE */
    GPIO106_GPIO,
    /* DOCK_DETECT */
    GPIO116_GPIO | MFP_LPM_FLOAT | MFP_PULL_FLOAT,

    /* LCD */
    GPIO54_LCD_LDD_0,
    GPIO55_LCD_LDD_1,
    GPIO56_LCD_LDD_2,
    GPIO57_LCD_LDD_3,
    GPIO58_LCD_LDD_4,
    GPIO59_LCD_LDD_5,
    GPIO60_LCD_LDD_6,
    GPIO61_LCD_LDD_7,
    GPIO62_LCD_LDD_8,
    GPIO63_LCD_LDD_9,
    GPIO64_LCD_LDD_10,
    GPIO65_LCD_LDD_11,
    GPIO66_LCD_LDD_12,
    GPIO67_LCD_LDD_13,
    GPIO68_LCD_LDD_14,
    GPIO69_LCD_LDD_15,
    GPIO70_LCD_LDD_16,
    GPIO71_LCD_LDD_17,
    GPIO72_LCD_FCLK,
    GPIO73_LCD_LCLK,
    GPIO74_LCD_PCLK,
    GPIO75_LCD_BIAS,
};

static mfp_cfg_t raumfeld_connector_pin_config[] __initdata = {
    /* UART1 */
    GPIO77_UART1_RXD,
    GPIO78_UART1_TXD,
    GPIO79_UART1_CTS,
    GPIO81_UART1_DSR,
    GPIO83_UART1_DTR,
    GPIO84_UART1_RTS,

    /* UART3 */
    GPIO110_UART3_RXD,

    /* USB Host */
    GPIO0_2_USBH_PEN,
    GPIO1_2_USBH_PWR,

    /* I2C */
    GPIO21_I2C_SCL | MFP_LPM_FLOAT | MFP_PULL_FLOAT,
    GPIO22_I2C_SDA | MFP_LPM_FLOAT | MFP_PULL_FLOAT,

    /* SPI */
    GPIO34_GPIO,    /* SPDIF_CS */
    GPIO96_GPIO,    /* MCLK_CS */
    GPIO125_GPIO,   /* ACCEL_CS */

    /* MMC */
    GPIO3_MMC1_DAT0,
    GPIO4_MMC1_DAT1,
    GPIO5_MMC1_DAT2,
    GPIO6_MMC1_DAT3,
    GPIO7_MMC1_CLK,
    GPIO8_MMC1_CMD,

    /* Ethernet */
    GPIO1_nCS2,         /* CS */
    GPIO40_GPIO | MFP_PULL_HIGH,    /* IRQ */

    /* SSP for I2S */
    GPIO85_SSP1_SCLK,
    GPIO89_SSP1_EXTCLK,
    GPIO86_SSP1_FRM,
    GPIO87_SSP1_TXD,
    GPIO88_SSP1_RXD,
    GPIO90_SSP1_SYSCLK,

    /* SSP2 for S/PDIF */
    GPIO25_SSP2_SCLK,
    GPIO26_SSP2_FRM,
    GPIO27_SSP2_TXD,
    GPIO29_SSP2_EXTCLK,

    /* LEDs */
    GPIO35_GPIO | MFP_LPM_PULL_LOW,
    GPIO36_GPIO | MFP_LPM_DRIVE_HIGH,
};

static mfp_cfg_t raumfeld_speaker_pin_config[] __initdata = {
    /* UART1 */
    GPIO77_UART1_RXD,
    GPIO78_UART1_TXD,
    GPIO79_UART1_CTS,
    GPIO81_UART1_DSR,
    GPIO83_UART1_DTR,
    GPIO84_UART1_RTS,

    /* UART3 */
    GPIO110_UART3_RXD,

    /* USB Host */
    GPIO0_2_USBH_PEN,
    GPIO1_2_USBH_PWR,

    /* I2C */
    GPIO21_I2C_SCL | MFP_LPM_FLOAT | MFP_PULL_FLOAT,
    GPIO22_I2C_SDA | MFP_LPM_FLOAT | MFP_PULL_FLOAT,

    /* SPI */
    GPIO34_GPIO,    /* SPDIF_CS */
    GPIO96_GPIO,    /* MCLK_CS */
    GPIO125_GPIO,   /* ACCEL_CS */

    /* MMC */
    GPIO3_MMC1_DAT0,
    GPIO4_MMC1_DAT1,
    GPIO5_MMC1_DAT2,
    GPIO6_MMC1_DAT3,
    GPIO7_MMC1_CLK,
    GPIO8_MMC1_CMD,

    /* Ethernet */
    GPIO1_nCS2,         /* CS */
    GPIO40_GPIO | MFP_PULL_HIGH,    /* IRQ */

    /* SSP for I2S */
    GPIO85_SSP1_SCLK,
    GPIO89_SSP1_EXTCLK,
    GPIO86_SSP1_FRM,
    GPIO87_SSP1_TXD,
    GPIO88_SSP1_RXD,
    GPIO90_SSP1_SYSCLK,

    /* LEDs */
    GPIO35_GPIO | MFP_LPM_PULL_LOW,
    GPIO36_GPIO | MFP_LPM_DRIVE_HIGH,
};

/*
 * SMSC LAN9220 Ethernet
 */

static struct resource smc91x_resources[] = {
    {
        .start  = PXA3xx_CS2_PHYS,
        .end    = PXA3xx_CS2_PHYS + 0xfffff,
        .flags  = IORESOURCE_MEM,
    },
    {
        .start  = PXA_GPIO_TO_IRQ(GPIO_ETH_IRQ),
        .end    = PXA_GPIO_TO_IRQ(GPIO_ETH_IRQ),
        .flags  = IORESOURCE_IRQ | IRQF_TRIGGER_FALLING,
    }
};

static struct smsc911x_platform_config raumfeld_smsc911x_config = {
    .phy_interface  = PHY_INTERFACE_MODE_MII,
    .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
    .irq_type   = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
    .flags      = SMSC911X_USE_32BIT | SMSC911X_SAVE_MAC_ADDRESS,
};

static struct platform_device smc91x_device = {
    .name       = "smsc911x",
    .id     = -1,
    .num_resources  = ARRAY_SIZE(smc91x_resources),
    .resource   = smc91x_resources,
    .dev        = {
        .platform_data = &raumfeld_smsc911x_config,
    }
};

static struct mtd_partition raumfeld_nand_partitions[] = {
    {
        .name       = "Bootloader",
        .offset     = 0,
        .size       = 0xa0000,
        .mask_flags = MTD_WRITEABLE, /* force read-only */
    },
    {
        .name       = "BootloaderEnvironment",
        .offset     = 0xa0000,
        .size       = 0x20000,
    },
    {
        .name       = "BootloaderSplashScreen",
        .offset     = 0xc0000,
        .size       = 0x60000,
    },
    {
        .name       = "UBI",
        .offset     = 0x120000,
        .size       = MTDPART_SIZ_FULL,
    },
};

static struct pxa3xx_nand_platform_data raumfeld_nand_info = {
    .enable_arbiter = 1,
    .keep_config    = 1,
    .num_cs     = 1,
    .parts[0]   = raumfeld_nand_partitions,
    .nr_parts[0]    = ARRAY_SIZE(raumfeld_nand_partitions),
};

static struct pxaohci_platform_data raumfeld_ohci_info = {
    .port_mode      = PMM_GLOBAL_MODE,
    .flags      = ENABLE_PORT1,
};

static struct rotary_encoder_platform_data raumfeld_rotary_encoder_info = {
    .steps      = 24,
    .axis       = REL_X,
    .relative_axis  = 1,
    .gpio_a     = GPIO_VOLENC_A,
    .gpio_b     = GPIO_VOLENC_B,
    .inverted_a = 1,
    .inverted_b = 0,
};

static struct platform_device rotary_encoder_device = {
    .name       = "rotary-encoder",
    .id     = 0,
    .dev        = {
        .platform_data = &raumfeld_rotary_encoder_info,
    }
};

static struct gpio_keys_button gpio_keys_button[] = {
    {
        .code           = KEY_F1,
        .type           = EV_KEY,
        .gpio           = GPIO_KEY1,
        .active_low     = 1,
        .wakeup         = 0,
        .debounce_interval  = 5, /* ms */
        .desc           = "Button 1",
    },
    {
        .code           = KEY_F2,
        .type           = EV_KEY,
        .gpio           = GPIO_KEY2,
        .active_low     = 1,
        .wakeup         = 0,
        .debounce_interval  = 5, /* ms */
        .desc           = "Button 2",
    },
    {
        .code           = KEY_F3,
        .type           = EV_KEY,
        .gpio           = GPIO_KEY3,
        .active_low     = 1,
        .wakeup         = 0,
        .debounce_interval  = 5, /* ms */
        .desc           = "Button 3",
    },
    {
        .code           = KEY_F4,
        .type           = EV_KEY,
        .gpio           = GPIO_RESCUE_BOOT,
        .active_low     = 0,
        .wakeup         = 0,
        .debounce_interval  = 5, /* ms */
        .desc           = "rescue boot button",
    },
    {
        .code           = KEY_F5,
        .type           = EV_KEY,
        .gpio           = GPIO_DOCK_DETECT,
        .active_low     = 1,
        .wakeup         = 0,
        .debounce_interval  = 5, /* ms */
        .desc           = "dock detect",
    },
    {
        .code           = KEY_F6,
        .type           = EV_KEY,
        .gpio           = GPIO_ON_OFF,
        .active_low     = 0,
        .wakeup         = 0,
        .debounce_interval  = 5, /* ms */
        .desc           = "on_off button",
    },
};

static struct gpio_keys_platform_data gpio_keys_platform_data = {
    .buttons    = gpio_keys_button,
    .nbuttons   = ARRAY_SIZE(gpio_keys_button),
    .rep        = 0,
};

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

static struct gpio_led raumfeld_leds[] = {
    {
        .name       = "raumfeld:1",
        .gpio       = GPIO_LED1,
        .active_low = 1,
        .default_state  = LEDS_GPIO_DEFSTATE_ON,
    },
    {
        .name       = "raumfeld:2",
        .gpio       = GPIO_LED2,
        .active_low = 0,
        .default_state  = LEDS_GPIO_DEFSTATE_OFF,
    }
};

static struct gpio_led_platform_data raumfeld_led_platform_data = {
    .leds       = raumfeld_leds,
    .num_leds   = ARRAY_SIZE(raumfeld_leds),
};

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

static void w1_enable_external_pullup(int enable)
{
    gpio_set_value(GPIO_W1_PULLUP_ENABLE, enable);
    msleep(100);
}

static struct w1_gpio_platform_data w1_gpio_platform_data = {
    .pin            = GPIO_ONE_WIRE,
    .is_open_drain      = 0,
    .enable_external_pullup = w1_enable_external_pullup,
};

struct platform_device raumfeld_w1_gpio_device = {
    .name   = "w1-gpio",
    .dev    = {
        .platform_data = &w1_gpio_platform_data
    }
};

static void __init raumfeld_w1_init(void)
{
    int ret = gpio_request(GPIO_W1_PULLUP_ENABLE,
                "W1 external pullup enable");

    if (ret < 0)
        pr_warning("Unable to request GPIO_W1_PULLUP_ENABLE\n");
    else
        gpio_direction_output(GPIO_W1_PULLUP_ENABLE, 0);

    platform_device_register(&raumfeld_w1_gpio_device);
}

/* PWM controlled backlight */
static struct platform_pwm_backlight_data raumfeld_pwm_backlight_data = {
    .pwm_id     = 0,
    .max_brightness = 100,
    .dft_brightness = 100,
    /* 10000 ns = 10 ms ^= 100 kHz */
    .pwm_period_ns  = 10000,
};

static struct platform_device raumfeld_pwm_backlight_device = {
    .name   = "pwm-backlight",
    .dev    = {
        .parent     = &pxa27x_device_pwm0.dev,
        .platform_data  = &raumfeld_pwm_backlight_data,
    }
};

/* LT3593 controlled backlight */
static struct gpio_led raumfeld_lt3593_led = {
    .name       = "backlight",
    .gpio       = mfp_to_gpio(MFP_PIN_GPIO17),
    .default_state  = LEDS_GPIO_DEFSTATE_ON,
};

static struct gpio_led_platform_data raumfeld_lt3593_platform_data = {
    .leds       = &raumfeld_lt3593_led,
    .num_leds   = 1,
};

static struct platform_device raumfeld_lt3593_device = {
    .name   = "leds-lt3593",
    .id = -1,
    .dev    = {
        .platform_data = &raumfeld_lt3593_platform_data,
    },
};

static struct pxafb_mode_info sharp_lq043t3dx02_mode = {
    .pixclock   = 111000,
    .xres       = 480,
    .yres       = 272,
    .bpp        = 16,
    .hsync_len  = 41,
    .left_margin    = 2,
    .right_margin   = 1,
    .vsync_len  = 10,
    .upper_margin   = 3,
    .lower_margin   = 1,
    .sync       = 0,
};

static struct pxafb_mach_info raumfeld_sharp_lcd_info = {
    .modes      = &sharp_lq043t3dx02_mode,
    .num_modes  = 1,
    .video_mem_size = 0x400000,
    .lcd_conn   = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
#ifdef CONFIG_PXA3XX_GCU
    .acceleration_enabled = 1,
#endif
};

static void __init raumfeld_lcd_init(void)
{
    int ret;

    ret = gpio_request(GPIO_TFT_VA_EN, "display VA enable");
    if (ret < 0)
        pr_warning("Unable to request GPIO_TFT_VA_EN\n");
    else
        gpio_direction_output(GPIO_TFT_VA_EN, 1);

    msleep(100);

    ret = gpio_request(GPIO_DISPLAY_ENABLE, "display enable");
    if (ret < 0)
        pr_warning("Unable to request GPIO_DISPLAY_ENABLE\n");
    else
        gpio_direction_output(GPIO_DISPLAY_ENABLE, 1);

    /* Hardware revision 2 has the backlight regulator controlled
     * by an LT3593, earlier and later devices use PWM for that. */
    if ((system_rev & 0xff) == 2) {
        platform_device_register(&raumfeld_lt3593_device);
    } else {
        mfp_cfg_t raumfeld_pwm_pin_config = GPIO17_PWM0_OUT;
        pxa3xx_mfp_config(&raumfeld_pwm_pin_config, 1);
        platform_device_register(&raumfeld_pwm_backlight_device);
    }

    pxa_set_fb_info(NULL, &raumfeld_sharp_lcd_info);
    platform_device_register(&pxa3xx_device_gcu);
}

struct spi_gpio_platform_data raumfeld_spi_platform_data = {
    .sck        = GPIO_SPI_CLK,
    .mosi       = GPIO_SPI_MOSI,
    .miso       = GPIO_SPI_MISO,
    .num_chipselect = 3,
};

static struct platform_device raumfeld_spi_device = {
    .name   = "spi_gpio",
    .id = 0,
    .dev    = {
        .platform_data  = &raumfeld_spi_platform_data,
    }
};

static struct lis3lv02d_platform_data lis3_pdata = {
    .click_flags    = LIS3_CLICK_SINGLE_X |
              LIS3_CLICK_SINGLE_Y |
              LIS3_CLICK_SINGLE_Z,
    .irq_cfg    = LIS3_IRQ1_CLICK | LIS3_IRQ2_CLICK,
    .wakeup_flags   = LIS3_WAKEUP_X_LO | LIS3_WAKEUP_X_HI |
              LIS3_WAKEUP_Y_LO | LIS3_WAKEUP_Y_HI |
              LIS3_WAKEUP_Z_LO | LIS3_WAKEUP_Z_HI,
    .wakeup_thresh  = 10,
    .click_thresh_x = 10,
    .click_thresh_y = 10,
    .click_thresh_z = 10,
};

#define SPI_AK4104  \
{           \
    .modalias   = "ak4104-codec",   \
    .max_speed_hz   = 10000,        \
    .bus_num    = 0,            \
    .chip_select    = 0,            \
    .controller_data = (void *) GPIO_SPDIF_CS,  \
}

#define SPI_LIS3    \
{           \
    .modalias   = "lis3lv02d_spi",  \
    .max_speed_hz   = 1000000,      \
    .bus_num    = 0,            \
    .chip_select    = 1,            \
    .controller_data = (void *) GPIO_ACCEL_CS,  \
    .platform_data  = &lis3_pdata,      \
    .irq        = PXA_GPIO_TO_IRQ(GPIO_ACCEL_IRQ),  \
}

#define SPI_DAC7512 \
{   \
    .modalias   = "dac7512",        \
    .max_speed_hz   = 1000000,      \
    .bus_num    = 0,            \
    .chip_select    = 2,            \
    .controller_data = (void *) GPIO_MCLK_DAC_CS,   \
}

static struct spi_board_info connector_spi_devices[] __initdata = {
    SPI_AK4104,
    SPI_DAC7512,
};

static struct spi_board_info speaker_spi_devices[] __initdata = {
    SPI_DAC7512,
};

static struct spi_board_info controller_spi_devices[] __initdata = {
    SPI_LIS3,
};

static int raumfeld_mci_init(struct device *dev, irq_handler_t isr, void *data)
{
    gpio_set_value(GPIO_W2W_RESET, 1);
    gpio_set_value(GPIO_W2W_PDN, 1);

    return 0;
}

static void raumfeld_mci_exit(struct device *dev, void *data)
{
    gpio_set_value(GPIO_W2W_RESET, 0);
    gpio_set_value(GPIO_W2W_PDN, 0);
}

static struct pxamci_platform_data raumfeld_mci_platform_data = {
    .init           = raumfeld_mci_init,
    .exit           = raumfeld_mci_exit,
    .detect_delay_ms    = 200,
    .gpio_card_detect   = -1,
    .gpio_card_ro       = -1,
    .gpio_power     = -1,
};

/*
 * External power / charge logic
 */

static int power_supply_init(struct device *dev)
{
    return 0;
}

static void power_supply_exit(struct device *dev)
{
}

static int raumfeld_is_ac_online(void)
{
    return !gpio_get_value(GPIO_CHARGE_DC_OK);
}

static int raumfeld_is_usb_online(void)
{
    return 0;
}

static char *raumfeld_power_supplicants[] = { "ds2760-battery.0" };

static void raumfeld_power_signal_charged(void)
{
    struct power_supply *psy =
        power_supply_get_by_name(raumfeld_power_supplicants[0]);

    if (psy)
        power_supply_set_battery_charged(psy);
}

static int raumfeld_power_resume(void)
{
    /* check if GPIO_CHARGE_DONE went low while we were sleeping */
    if (!gpio_get_value(GPIO_CHARGE_DONE))
        raumfeld_power_signal_charged();

    return 0;
}

static struct pda_power_pdata power_supply_info = {
    .init           = power_supply_init,
    .is_ac_online       = raumfeld_is_ac_online,
    .is_usb_online      = raumfeld_is_usb_online,
    .exit           = power_supply_exit,
    .supplied_to        = raumfeld_power_supplicants,
    .num_supplicants    = ARRAY_SIZE(raumfeld_power_supplicants),
    .resume         = raumfeld_power_resume,
};

static struct resource power_supply_resources[] = {
    {
        .name  = "ac",
        .flags = IORESOURCE_IRQ |
             IORESOURCE_IRQ_HIGHEDGE | IORESOURCE_IRQ_LOWEDGE,
        .start = GPIO_CHARGE_DC_OK,
        .end   = GPIO_CHARGE_DC_OK,
    },
};

static irqreturn_t charge_done_irq(int irq, void *dev_id)
{
    raumfeld_power_signal_charged();
    return IRQ_HANDLED;
}

static struct platform_device raumfeld_power_supply = {
    .name = "pda-power",
    .id   = -1,
    .dev  = {
        .platform_data = &power_supply_info,
    },
    .resource      = power_supply_resources,
    .num_resources = ARRAY_SIZE(power_supply_resources),
};

static void __init raumfeld_power_init(void)
{
    int ret;

    /* Set PEN2 high to enable maximum charge current */
    ret = gpio_request(GPIO_CHRG_PEN2, "CHRG_PEN2");
    if (ret < 0)
        pr_warning("Unable to request GPIO_CHRG_PEN2\n");
    else
        gpio_direction_output(GPIO_CHRG_PEN2, 1);

    ret = gpio_request(GPIO_CHARGE_DC_OK, "CABLE_DC_OK");
    if (ret < 0)
        pr_warning("Unable to request GPIO_CHARGE_DC_OK\n");

    ret = gpio_request(GPIO_CHARGE_USB_SUSP, "CHARGE_USB_SUSP");
    if (ret < 0)
        pr_warning("Unable to request GPIO_CHARGE_USB_SUSP\n");
    else
        gpio_direction_output(GPIO_CHARGE_USB_SUSP, 0);

    power_supply_resources[0].start = gpio_to_irq(GPIO_CHARGE_DC_OK);
    power_supply_resources[0].end = gpio_to_irq(GPIO_CHARGE_DC_OK);

    ret = request_irq(gpio_to_irq(GPIO_CHARGE_DONE),
            &charge_done_irq, IORESOURCE_IRQ_LOWEDGE,
            "charge_done", NULL);

    if (ret < 0)
        printk(KERN_ERR "%s: unable to register irq %d\n", __func__,
            GPIO_CHARGE_DONE);
    else
        platform_device_register(&raumfeld_power_supply);
}

/* Fixed regulator for AUDIO_VA, 0-0048 maps to the cs4270 codec device */

static struct regulator_consumer_supply audio_va_consumer_supply =
    REGULATOR_SUPPLY("va", "0-0048");

struct regulator_init_data audio_va_initdata = {
    .consumer_supplies = &audio_va_consumer_supply,
    .num_consumer_supplies = 1,
    .constraints = {
        .valid_ops_mask = REGULATOR_CHANGE_STATUS,
    },
};

static struct fixed_voltage_config audio_va_config = {
    .supply_name        = "audio_va",
    .microvolts     = 5000000,
    .gpio           = GPIO_AUDIO_VA_ENABLE,
    .enable_high        = 1,
    .enabled_at_boot    = 0,
    .init_data      = &audio_va_initdata,
};

static struct platform_device audio_va_device = {
    .name   = "reg-fixed-voltage",
    .id = 0,
    .dev    = {
        .platform_data = &audio_va_config,
    },
};

/* Dummy supplies for Codec's VD/VLC */

static struct regulator_consumer_supply audio_dummy_supplies[] = {
    REGULATOR_SUPPLY("vd", "0-0048"),
    REGULATOR_SUPPLY("vlc", "0-0048"),
};

struct regulator_init_data audio_dummy_initdata = {
    .consumer_supplies = audio_dummy_supplies,
    .num_consumer_supplies = ARRAY_SIZE(audio_dummy_supplies),
    .constraints = {
        .valid_ops_mask = REGULATOR_CHANGE_STATUS,
    },
};

static struct fixed_voltage_config audio_dummy_config = {
    .supply_name        = "audio_vd",
    .microvolts     = 3300000,
    .gpio           = -1,
    .init_data      = &audio_dummy_initdata,
};

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

static struct platform_device *audio_regulator_devices[] = {
    &audio_va_device,
    &audio_supply_dummy_device,
};

static struct regulator_consumer_supply vcc_mmc_supply =
    REGULATOR_SUPPLY("vmmc", "pxa2xx-mci.0");

static struct regulator_init_data vcc_mmc_init_data = {
    .constraints = {
        .min_uV         = 3300000,
        .max_uV         = 3300000,
        .valid_modes_mask   = REGULATOR_MODE_NORMAL,
        .valid_ops_mask     = REGULATOR_CHANGE_STATUS |
                      REGULATOR_CHANGE_VOLTAGE |
                      REGULATOR_CHANGE_MODE,
    },
    .consumer_supplies = &vcc_mmc_supply,
    .num_consumer_supplies = 1,
};

struct max8660_subdev_data max8660_v6_subdev_data = {
    .id     = MAX8660_V6,
    .name       = "vmmc",
    .platform_data  = &vcc_mmc_init_data,
};

static struct max8660_platform_data max8660_pdata = {
    .subdevs = &max8660_v6_subdev_data,
    .num_subdevs = 1,
};

static struct i2c_board_info raumfeld_pwri2c_board_info = {
    .type       = "max8660",
    .addr       = 0x34,
    .platform_data  = &max8660_pdata,
};

static struct i2c_board_info raumfeld_connector_i2c_board_info __initdata = {
    .type   = "cs4270",
    .addr   = 0x48,
};

static struct eeti_ts_platform_data eeti_ts_pdata = {
    .irq_active_high = 1,
    .irq_gpio = GPIO_TOUCH_IRQ,
};

static struct i2c_board_info raumfeld_controller_i2c_board_info __initdata = {
    .type   = "eeti_ts",
    .addr   = 0x0a,
    .platform_data = &eeti_ts_pdata,
};

static struct platform_device *raumfeld_common_devices[] = {
    &raumfeld_gpio_keys_device,
    &raumfeld_led_device,
    &raumfeld_spi_device,
};

static void __init raumfeld_audio_init(void)
{
    int ret;

    ret = gpio_request(GPIO_CODEC_RESET, "cs4270 reset");
    if (ret < 0)
        pr_warning("unable to request GPIO_CODEC_RESET\n");
    else
        gpio_direction_output(GPIO_CODEC_RESET, 1);

    ret = gpio_request(GPIO_SPDIF_RESET, "ak4104 s/pdif reset");
    if (ret < 0)
        pr_warning("unable to request GPIO_SPDIF_RESET\n");
    else
        gpio_direction_output(GPIO_SPDIF_RESET, 1);

    ret = gpio_request(GPIO_MCLK_RESET, "MCLK reset");
    if (ret < 0)
        pr_warning("unable to request GPIO_MCLK_RESET\n");
    else
        gpio_direction_output(GPIO_MCLK_RESET, 1);

    platform_add_devices(ARRAY_AND_SIZE(audio_regulator_devices));
}

static void __init raumfeld_common_init(void)
{
    int ret;

    /* The on/off button polarity has changed after revision 1 */
    if ((system_rev & 0xff) > 1) {
        int i;

        for (i = 0; i < ARRAY_SIZE(gpio_keys_button); i++)
            if (!strcmp(gpio_keys_button[i].desc, "on_off button"))
                gpio_keys_button[i].active_low = 1;
    }

    enable_irq_wake(IRQ_WAKEUP0);

    pxa3xx_set_nand_info(&raumfeld_nand_info);
    pxa3xx_set_i2c_power_info(NULL);
    pxa_set_ohci_info(&raumfeld_ohci_info);
    pxa_set_mci_info(&raumfeld_mci_platform_data);
    pxa_set_i2c_info(NULL);
    pxa_set_ffuart_info(NULL);

    ret = gpio_request(GPIO_W2W_RESET, "Wi2Wi reset");
    if (ret < 0)
        pr_warning("Unable to request GPIO_W2W_RESET\n");
    else
        gpio_direction_output(GPIO_W2W_RESET, 0);

    ret = gpio_request(GPIO_W2W_PDN, "Wi2Wi powerup");
    if (ret < 0)
        pr_warning("Unable to request GPIO_W2W_PDN\n");
    else
        gpio_direction_output(GPIO_W2W_PDN, 0);

    /* this can be used to switch off the device */
    ret = gpio_request(GPIO_SHUTDOWN_SUPPLY, "supply shutdown");
    if (ret < 0)
        pr_warning("Unable to request GPIO_SHUTDOWN_SUPPLY\n");
    else
        gpio_direction_output(GPIO_SHUTDOWN_SUPPLY, 0);

    platform_add_devices(ARRAY_AND_SIZE(raumfeld_common_devices));
    i2c_register_board_info(1, &raumfeld_pwri2c_board_info, 1);
}

static void __init raumfeld_controller_init(void)
{
    int ret;

    pxa3xx_mfp_config(ARRAY_AND_SIZE(raumfeld_controller_pin_config));
    platform_device_register(&rotary_encoder_device);
    spi_register_board_info(ARRAY_AND_SIZE(controller_spi_devices));
    i2c_register_board_info(0, &raumfeld_controller_i2c_board_info, 1);

    ret = gpio_request(GPIO_SHUTDOWN_BATT, "battery shutdown");
    if (ret < 0)
        pr_warning("Unable to request GPIO_SHUTDOWN_BATT\n");
    else
        gpio_direction_output(GPIO_SHUTDOWN_BATT, 0);

    raumfeld_common_init();
    raumfeld_power_init();
    raumfeld_lcd_init();
    raumfeld_w1_init();
}

static void __init raumfeld_connector_init(void)
{
    pxa3xx_mfp_config(ARRAY_AND_SIZE(raumfeld_connector_pin_config));
    spi_register_board_info(ARRAY_AND_SIZE(connector_spi_devices));
    i2c_register_board_info(0, &raumfeld_connector_i2c_board_info, 1);

    platform_device_register(&smc91x_device);

    raumfeld_audio_init();
    raumfeld_common_init();
}

static void __init raumfeld_speaker_init(void)
{
    pxa3xx_mfp_config(ARRAY_AND_SIZE(raumfeld_speaker_pin_config));
    spi_register_board_info(ARRAY_AND_SIZE(speaker_spi_devices));
    i2c_register_board_info(0, &raumfeld_connector_i2c_board_info, 1);

    platform_device_register(&smc91x_device);
    platform_device_register(&rotary_encoder_device);

    raumfeld_audio_init();
    raumfeld_common_init();
}

/* physical memory regions */
#define RAUMFELD_SDRAM_BASE 0xa0000000  /* SDRAM region */

#ifdef CONFIG_MACH_RAUMFELD_RC
MACHINE_START(RAUMFELD_RC, "Raumfeld Controller")
    .atag_offset    = 0x100,
    .init_machine   = raumfeld_controller_init,
    .map_io     = pxa3xx_map_io,
    .nr_irqs    = PXA_NR_IRQS,
    .init_irq   = pxa3xx_init_irq,
    .handle_irq = pxa3xx_handle_irq,
    .timer      = &pxa_timer,
    .restart    = pxa_restart,
MACHINE_END
#endif

#ifdef CONFIG_MACH_RAUMFELD_CONNECTOR
MACHINE_START(RAUMFELD_CONNECTOR, "Raumfeld Connector")
    .atag_offset    = 0x100,
    .init_machine   = raumfeld_connector_init,
    .map_io     = pxa3xx_map_io,
    .nr_irqs    = PXA_NR_IRQS,
    .init_irq   = pxa3xx_init_irq,
    .handle_irq = pxa3xx_handle_irq,
    .timer      = &pxa_timer,
    .restart    = pxa_restart,
MACHINE_END
#endif

#ifdef CONFIG_MACH_RAUMFELD_SPEAKER
MACHINE_START(RAUMFELD_SPEAKER, "Raumfeld Speaker")
    .atag_offset    = 0x100,
    .init_machine   = raumfeld_speaker_init,
    .map_io     = pxa3xx_map_io,
    .nr_irqs    = PXA_NR_IRQS,
    .init_irq   = pxa3xx_init_irq,
    .handle_irq = pxa3xx_handle_irq,
    .timer      = &pxa_timer,
    .restart    = pxa_restart,
MACHINE_END
#endif