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mioa701.c

/*
 * Handles the Mitac Mio A701 Board
 *
 * Copyright (C) 2008 Robert Jarzmik
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/sysdev.h>
#include <linux/input.h>
#include <linux/delay.h>
#include <linux/gpio_keys.h>
#include <linux/pwm_backlight.h>
#include <linux/rtc.h>
#include <linux/leds.h>
#include <linux/gpio.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/pda_power.h>
#include <linux/power_supply.h>
#include <linux/wm97xx.h>
#include <linux/mtd/physmap.h>

#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <mach/mfp-pxa27x.h>
#include <mach/pxa27x_keypad.h>
#include <mach/pxafb.h>
#include <mach/pxa2xx-regs.h>
#include <mach/mmc.h>
#include <mach/udc.h>
#include <mach/pxa27x-udc.h>

#include <mach/mioa701.h>

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

static unsigned long mioa701_pin_config[] = {
      /* Mio global */
      MIO_CFG_OUT(GPIO9_CHARGE_nEN, AF0, DRIVE_LOW),
      MIO_CFG_OUT(GPIO18_POWEROFF, AF0, DRIVE_LOW),
      MFP_CFG_OUT(GPIO3, AF0, DRIVE_HIGH),
      MFP_CFG_OUT(GPIO4, AF0, DRIVE_HIGH),

      /* Backlight PWM 0 */
      GPIO16_PWM0_OUT,

      /* MMC */
      GPIO32_MMC_CLK,
      GPIO92_MMC_DAT_0,
      GPIO109_MMC_DAT_1,
      GPIO110_MMC_DAT_2,
      GPIO111_MMC_DAT_3,
      GPIO112_MMC_CMD,
      MIO_CFG_IN(GPIO78_SDIO_RO, AF0),
      MIO_CFG_IN(GPIO15_SDIO_INSERT, AF0),
      MIO_CFG_OUT(GPIO91_SDIO_EN, AF0, DRIVE_LOW),

      /* USB */
      MIO_CFG_IN(GPIO13_USB_DETECT, AF0),
      MIO_CFG_OUT(GPIO22_USB_ENABLE, AF0, DRIVE_LOW),

      /* LCD */
      GPIO58_LCD_LDD_0,
      GPIO59_LCD_LDD_1,
      GPIO60_LCD_LDD_2,
      GPIO61_LCD_LDD_3,
      GPIO62_LCD_LDD_4,
      GPIO63_LCD_LDD_5,
      GPIO64_LCD_LDD_6,
      GPIO65_LCD_LDD_7,
      GPIO66_LCD_LDD_8,
      GPIO67_LCD_LDD_9,
      GPIO68_LCD_LDD_10,
      GPIO69_LCD_LDD_11,
      GPIO70_LCD_LDD_12,
      GPIO71_LCD_LDD_13,
      GPIO72_LCD_LDD_14,
      GPIO73_LCD_LDD_15,
      GPIO74_LCD_FCLK,
      GPIO75_LCD_LCLK,
      GPIO76_LCD_PCLK,

      /* Bluetooth */
      GPIO44_BTUART_CTS,
      GPIO42_BTUART_RXD,
      GPIO45_BTUART_RTS,
      GPIO43_BTUART_TXD,
      MIO_CFG_OUT(GPIO83_BT_ON, AF0, DRIVE_LOW),

      /* GPS */
      MIO_CFG_OUT(GPIO23_GPS_UNKNOWN1, AF0, DRIVE_LOW),
      MIO_CFG_OUT(GPIO26_GPS_ON, AF0, DRIVE_LOW),
      MIO_CFG_OUT(GPIO27_GPS_RESET, AF0, DRIVE_LOW),
      MIO_CFG_OUT(GPIO106_GPS_UNKNOWN2, AF0, DRIVE_LOW),
      MIO_CFG_OUT(GPIO107_GPS_UNKNOWN3, AF0, DRIVE_LOW),
      GPIO46_STUART_RXD,
      GPIO47_STUART_TXD,

      /* GSM */
      MIO_CFG_OUT(GPIO24_GSM_MOD_RESET_CMD, AF0, DRIVE_LOW),
      MIO_CFG_OUT(GPIO88_GSM_nMOD_ON_CMD, AF0, DRIVE_HIGH),
      MIO_CFG_OUT(GPIO90_GSM_nMOD_OFF_CMD, AF0, DRIVE_HIGH),
      MIO_CFG_OUT(GPIO114_GSM_nMOD_DTE_UART_STATE, AF0, DRIVE_HIGH),
      MIO_CFG_IN(GPIO25_GSM_MOD_ON_STATE, AF0),
      MIO_CFG_IN(GPIO113_GSM_EVENT, AF0) | WAKEUP_ON_EDGE_BOTH,
      GPIO34_FFUART_RXD,
      GPIO35_FFUART_CTS,
      GPIO36_FFUART_DCD,
      GPIO37_FFUART_DSR,
      GPIO39_FFUART_TXD,
      GPIO40_FFUART_DTR,
      GPIO41_FFUART_RTS,

      /* Sound */
      GPIO89_AC97_SYSCLK,
      MIO_CFG_IN(GPIO12_HPJACK_INSERT, AF0),

      /* Leds */
      MIO_CFG_OUT(GPIO10_LED_nCharging, AF0, DRIVE_HIGH),
      MIO_CFG_OUT(GPIO97_LED_nBlue, AF0, DRIVE_HIGH),
      MIO_CFG_OUT(GPIO98_LED_nOrange, AF0, DRIVE_HIGH),
      MIO_CFG_OUT(GPIO82_LED_nVibra, AF0, DRIVE_HIGH),
      MIO_CFG_OUT(GPIO115_LED_nKeyboard, AF0, DRIVE_HIGH),

      /* Keyboard */
      MIO_CFG_IN(GPIO0_KEY_POWER, AF0) | WAKEUP_ON_EDGE_BOTH,
      MIO_CFG_IN(GPIO93_KEY_VOLUME_UP, AF0),
      MIO_CFG_IN(GPIO94_KEY_VOLUME_DOWN, AF0),
      GPIO100_KP_MKIN_0,
      GPIO101_KP_MKIN_1,
      GPIO102_KP_MKIN_2,
      GPIO103_KP_MKOUT_0,
      GPIO104_KP_MKOUT_1,
      GPIO105_KP_MKOUT_2,

      /* Unknown */
      MFP_CFG_IN(GPIO14, AF0),
      MFP_CFG_IN(GPIO20, AF0),
      MFP_CFG_IN(GPIO21, AF0),
      MFP_CFG_IN(GPIO33, AF0),
      MFP_CFG_OUT(GPIO49, AF0, DRIVE_HIGH),
      MFP_CFG_OUT(GPIO57, AF0, DRIVE_HIGH),
      MFP_CFG_OUT(GPIO77, AF0, DRIVE_HIGH),
      MFP_CFG_IN(GPIO80, AF0),
      MFP_CFG_OUT(GPIO86, AF0, DRIVE_HIGH),
      MFP_CFG_IN(GPIO96, AF0),
      MFP_CFG_OUT(GPIO116, AF0, DRIVE_HIGH),
};

#define MIO_GPIO_IN(num, _desc) \
      { .gpio = (num), .dir = 0, .desc = (_desc) }
#define MIO_GPIO_OUT(num, _init, _desc) \
      { .gpio = (num), .dir = 1, .init = (_init), .desc = (_desc) }
struct gpio_ress {
      unsigned gpio : 8;
      unsigned dir : 1;
      unsigned init : 1;
      char *desc;
};

static int mio_gpio_request(struct gpio_ress *gpios, int size)
{
      int i, rc = 0;
      int gpio;
      int dir;

      for (i = 0; (!rc) && (i < size); i++) {
            gpio = gpios[i].gpio;
            dir = gpios[i].dir;
            rc = gpio_request(gpio, gpios[i].desc);
            if (rc) {
                  printk(KERN_ERR "Error requesting GPIO %d(%s) : %d\n",
                         gpio, gpios[i].desc, rc);
                  continue;
            }
            if (dir)
                  gpio_direction_output(gpio, gpios[i].init);
            else
                  gpio_direction_input(gpio);
      }
      while ((rc) && (--i >= 0))
            gpio_free(gpios[i].gpio);
      return rc;
}

static void mio_gpio_free(struct gpio_ress *gpios, int size)
{
      int i;

      for (i = 0; i < size; i++)
            gpio_free(gpios[i].gpio);
}

/* LCD Screen and Backlight */
static struct platform_pwm_backlight_data mioa701_backlight_data = {
      .pwm_id           = 0,
      .max_brightness   = 100,
      .dft_brightness   = 50,
      .pwm_period_ns    = 4000 * 1024,    /* Fl = 250kHz */
};

/*
 * LTM0305A776C LCD panel timings
 *
 * see:
 *  - the LTM0305A776C datasheet,
 *  - and the PXA27x Programmers' manual
 */
static struct pxafb_mode_info mioa701_ltm0305a776c = {
      .pixclock         = 220000,   /* CLK=4.545 MHz */
      .xres             = 240,
      .yres             = 320,
      .bpp              = 16,
      .hsync_len        = 4,
      .vsync_len        = 2,
      .left_margin            = 6,
      .right_margin           = 4,
      .upper_margin           = 5,
      .lower_margin           = 3,
};

static void mioa701_lcd_power(int on, struct fb_var_screeninfo *si)
{
      gpio_set_value(GPIO87_LCD_POWER, on);
}

static struct pxafb_mach_info mioa701_pxafb_info = {
      .modes                  = &mioa701_ltm0305a776c,
      .num_modes        = 1,
      .lcd_conn         = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
      .pxafb_lcd_power  = mioa701_lcd_power,
};

/*
 * Keyboard configuration
 */
static unsigned int mioa701_matrix_keys[] = {
      KEY(0, 0, KEY_UP),
      KEY(0, 1, KEY_RIGHT),
      KEY(0, 2, KEY_MEDIA),
      KEY(1, 0, KEY_DOWN),
      KEY(1, 1, KEY_ENTER),
      KEY(1, 2, KEY_CONNECT), /* GPS key */
      KEY(2, 0, KEY_LEFT),
      KEY(2, 1, KEY_PHONE),   /* Phone Green key */
      KEY(2, 2, KEY_CAMERA)   /* Camera key */
};
static struct pxa27x_keypad_platform_data mioa701_keypad_info = {
      .matrix_key_rows = 3,
      .matrix_key_cols = 3,
      .matrix_key_map = mioa701_matrix_keys,
      .matrix_key_map_size = ARRAY_SIZE(mioa701_matrix_keys),
};

/*
 * GPIO Key Configuration
 */
#define MIO_KEY(key, _gpio, _desc, _wakeup) \
      { .code = (key), .gpio = (_gpio), .active_low = 0, \
      .desc = (_desc), .type = EV_KEY, .wakeup = (_wakeup) }
static struct gpio_keys_button mioa701_button_table[] = {
      MIO_KEY(KEY_EXIT, GPIO0_KEY_POWER, "Power button", 1),
      MIO_KEY(KEY_VOLUMEUP, GPIO93_KEY_VOLUME_UP, "Volume up", 0),
      MIO_KEY(KEY_VOLUMEDOWN, GPIO94_KEY_VOLUME_DOWN, "Volume down", 0),
      MIO_KEY(KEY_HP, GPIO12_HPJACK_INSERT, "HP jack detect", 0)
};

static struct gpio_keys_platform_data mioa701_gpio_keys_data = {
      .buttons  = mioa701_button_table,
      .nbuttons = ARRAY_SIZE(mioa701_button_table),
};

/*
 * Leds and vibrator
 */
#define ONE_LED(_gpio, _name) \
{ .gpio = (_gpio), .name = (_name), .active_low = true }
static struct gpio_led gpio_leds[] = {
      ONE_LED(GPIO10_LED_nCharging, "mioa701:charging"),
      ONE_LED(GPIO97_LED_nBlue, "mioa701:blue"),
      ONE_LED(GPIO98_LED_nOrange, "mioa701:orange"),
      ONE_LED(GPIO82_LED_nVibra, "mioa701:vibra"),
      ONE_LED(GPIO115_LED_nKeyboard, "mioa701:keyboard")
};

static struct gpio_led_platform_data gpio_led_info = {
      .leds = gpio_leds,
      .num_leds = ARRAY_SIZE(gpio_leds),
};

/*
 * GSM Sagem XS200 chip
 *
 * GSM handling was purged from kernel. For history, this is the way to go :
 *   - init : GPIO24_GSM_MOD_RESET_CMD = 0, GPIO114_GSM_nMOD_DTE_UART_STATE = 1
 *            GPIO88_GSM_nMOD_ON_CMD = 1, GPIO90_GSM_nMOD_OFF_CMD = 1
 *   - reset : GPIO24_GSM_MOD_RESET_CMD = 1, msleep(100),
 *             GPIO24_GSM_MOD_RESET_CMD = 0
 *   - turn on  : GPIO88_GSM_nMOD_ON_CMD = 0, msleep(1000),
 *                GPIO88_GSM_nMOD_ON_CMD = 1
 *   - turn off : GPIO90_GSM_nMOD_OFF_CMD = 0, msleep(1000),
 *                GPIO90_GSM_nMOD_OFF_CMD = 1
 */
static int is_gsm_on(void)
{
      int is_on;

      is_on = !!gpio_get_value(GPIO25_GSM_MOD_ON_STATE);
      return is_on;
}

irqreturn_t gsm_on_irq(int irq, void *p)
{
      printk(KERN_DEBUG "Mioa701: GSM status changed to %s\n",
             is_gsm_on() ? "on" : "off");
      return IRQ_HANDLED;
}

struct gpio_ress gsm_gpios[] = {
      MIO_GPIO_IN(GPIO25_GSM_MOD_ON_STATE, "GSM state"),
      MIO_GPIO_IN(GPIO113_GSM_EVENT, "GSM event"),
};

static int __init gsm_init(void)
{
      int rc;

      rc = mio_gpio_request(ARRAY_AND_SIZE(gsm_gpios));
      if (rc)
            goto err_gpio;
      rc = request_irq(gpio_to_irq(GPIO25_GSM_MOD_ON_STATE), gsm_on_irq,
                   IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
                   "GSM XS200 Power Irq", NULL);
      if (rc)
            goto err_irq;

      gpio_set_wake(GPIO113_GSM_EVENT, 1);
      return 0;

err_irq:
      printk(KERN_ERR "Mioa701: Can't request GSM_ON irq\n");
      mio_gpio_free(ARRAY_AND_SIZE(gsm_gpios));
err_gpio:
      printk(KERN_ERR "Mioa701: gsm not available\n");
      return rc;
}

static void gsm_exit(void)
{
      free_irq(gpio_to_irq(GPIO25_GSM_MOD_ON_STATE), NULL);
      mio_gpio_free(ARRAY_AND_SIZE(gsm_gpios));
}

/*
 * Bluetooth BRF6150 chip
 *
 * BT handling was purged from kernel. For history, this is the way to go :
 * - turn on  : GPIO83_BT_ON = 1
 * - turn off : GPIO83_BT_ON = 0
 */

/*
 * GPS Sirf Star III chip
 *
 * GPS handling was purged from kernel. For history, this is the way to go :
 * - init : GPIO23_GPS_UNKNOWN1 = 1, GPIO26_GPS_ON = 0, GPIO27_GPS_RESET = 0
 *          GPIO106_GPS_UNKNOWN2 = 0, GPIO107_GPS_UNKNOWN3 = 0
 * - turn on  : GPIO27_GPS_RESET = 1, GPIO26_GPS_ON = 1
 * - turn off : GPIO26_GPS_ON = 0, GPIO27_GPS_RESET = 0
 */

/*
 * USB UDC
 */
static void udc_power_command(int cmd)
{
      switch (cmd) {
      case PXA2XX_UDC_CMD_DISCONNECT:
            gpio_set_value(GPIO22_USB_ENABLE, 0);
            break;
      case PXA2XX_UDC_CMD_CONNECT:
            gpio_set_value(GPIO22_USB_ENABLE, 1);
            break;
      default:
            printk(KERN_INFO "udc_control: unknown command (0x%x)!\n", cmd);
            break;
      }
}

static int is_usb_connected(void)
{
      return !!gpio_get_value(GPIO13_USB_DETECT);
}

static struct pxa2xx_udc_mach_info mioa701_udc_info = {
      .udc_is_connected = is_usb_connected,
      .udc_command        = udc_power_command,
};

struct gpio_ress udc_gpios[] = {
      MIO_GPIO_OUT(GPIO22_USB_ENABLE, 0, "USB Vbus enable")
};

static int __init udc_init(void)
{
      pxa_set_udc_info(&mioa701_udc_info);
      return mio_gpio_request(ARRAY_AND_SIZE(udc_gpios));
}

static void udc_exit(void)
{
      mio_gpio_free(ARRAY_AND_SIZE(udc_gpios));
}

/*
 * SDIO/MMC Card controller
 */
static void mci_setpower(struct device *dev, unsigned int vdd)
{
      struct pxamci_platform_data *p_d = dev->platform_data;

      if ((1 << vdd) & p_d->ocr_mask)
            gpio_set_value(GPIO91_SDIO_EN, 1);  /* enable SDIO power */
      else
            gpio_set_value(GPIO91_SDIO_EN, 0);  /* disable SDIO power */
}

static int mci_get_ro(struct device *dev)
{
      return gpio_get_value(GPIO78_SDIO_RO);
}

struct gpio_ress mci_gpios[] = {
      MIO_GPIO_IN(GPIO78_SDIO_RO,   "SDIO readonly detect"),
      MIO_GPIO_IN(GPIO15_SDIO_INSERT,     "SDIO insertion detect"),
      MIO_GPIO_OUT(GPIO91_SDIO_EN, 0,     "SDIO power enable")
};

static void mci_exit(struct device *dev, void *data)
{
      mio_gpio_free(ARRAY_AND_SIZE(mci_gpios));
      free_irq(gpio_to_irq(GPIO15_SDIO_INSERT), data);
}

static struct pxamci_platform_data mioa701_mci_info;

/**
 * The card detect interrupt isn't debounced so we delay it by 250ms
 * to give the card a chance to fully insert/eject.
 */
static int mci_init(struct device *dev, irq_handler_t detect_int, void *data)
{
      int rc;
      int irq = gpio_to_irq(GPIO15_SDIO_INSERT);

      rc = mio_gpio_request(ARRAY_AND_SIZE(mci_gpios));
      if (rc)
            goto err_gpio;
      /* enable RE/FE interrupt on card insertion and removal */
      rc = request_irq(irq, detect_int,
                   IRQF_DISABLED | IRQF_TRIGGER_RISING |
                   IRQF_TRIGGER_FALLING,
                   "MMC card detect", data);
      if (rc)
            goto err_irq;

      mioa701_mci_info.detect_delay = msecs_to_jiffies(250);
      return 0;

err_irq:
      dev_err(dev, "mioa701_mci_init: MMC/SD:"
            " can't request MMC card detect IRQ\n");
      mio_gpio_free(ARRAY_AND_SIZE(mci_gpios));
err_gpio:
      return rc;
}

static struct pxamci_platform_data mioa701_mci_info = {
      .ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34,
      .init   = mci_init,
      .get_ro       = mci_get_ro,
      .setpower = mci_setpower,
      .exit   = mci_exit,
};

/* FlashRAM */
static struct resource strataflash_resource = {
      .start = PXA_CS0_PHYS,
      .end   = PXA_CS0_PHYS + SZ_64M - 1,
      .flags = IORESOURCE_MEM,
};

static struct physmap_flash_data strataflash_data = {
      .width = 2,
      /* .set_vpp = mioa701_set_vpp, */
};

static struct platform_device strataflash = {
      .name        = "physmap-flash",
      .id          = -1,
      .resource      = &strataflash_resource,
      .num_resources = 1,
      .dev = {
            .platform_data = &strataflash_data,
      },
};

/*
 * Suspend/Resume bootstrap management
 *
 * MIO A701 reboot sequence is highly ROM dependant. From the one dissassembled,
 * this sequence is as follows :
 *   - disables interrupts
 *   - initialize SDRAM (self refresh RAM into active RAM)
 *   - initialize GPIOs (depends on value at 0xa020b020)
 *   - initialize coprossessors
 *   - if edge detect on PWR_SCL(GPIO3), then proceed to cold start
 *   - or if value at 0xa020b000 not equal to 0x0f0f0f0f, proceed to cold start
 *   - else do a resume, ie. jump to addr 0xa0100000
 */
#define RESUME_ENABLE_ADDR    0xa020b000
#define RESUME_ENABLE_VAL     0x0f0f0f0f
#define RESUME_BT_ADDR        0xa020b020
#define RESUME_UNKNOWN_ADDR   0xa020b024
#define RESUME_VECTOR_ADDR    0xa0100000
#define BOOTSTRAP_WORDS       mioa701_bootstrap_lg/4

static u32 *save_buffer;

static void install_bootstrap(void)
{
      int i;
      u32 *rom_bootstrap  = phys_to_virt(RESUME_VECTOR_ADDR);
      u32 *src = &mioa701_bootstrap;

      for (i = 0; i < BOOTSTRAP_WORDS; i++)
            rom_bootstrap[i] = src[i];
}


static int mioa701_sys_suspend(struct sys_device *sysdev, pm_message_t state)
{
      int i = 0, is_bt_on;
      u32 *mem_resume_vector  = phys_to_virt(RESUME_VECTOR_ADDR);
      u32 *mem_resume_enabler = phys_to_virt(RESUME_ENABLE_ADDR);
      u32 *mem_resume_bt      = phys_to_virt(RESUME_BT_ADDR);
      u32 *mem_resume_unknown = phys_to_virt(RESUME_UNKNOWN_ADDR);

      /* Devices prepare suspend */
      is_bt_on = gpio_get_value(GPIO83_BT_ON);
      pxa2xx_mfp_set_lpm(GPIO83_BT_ON,
                     is_bt_on ? MFP_LPM_DRIVE_HIGH : MFP_LPM_DRIVE_LOW);

      for (i = 0; i < BOOTSTRAP_WORDS; i++)
            save_buffer[i] = mem_resume_vector[i];
      save_buffer[i++] = *mem_resume_enabler;
      save_buffer[i++] = *mem_resume_bt;
      save_buffer[i++] = *mem_resume_unknown;

      *mem_resume_enabler = RESUME_ENABLE_VAL;
      *mem_resume_bt        = is_bt_on;

      install_bootstrap();
      return 0;
}

static int mioa701_sys_resume(struct sys_device *sysdev)
{
      int i = 0;
      u32 *mem_resume_vector  = phys_to_virt(RESUME_VECTOR_ADDR);
      u32 *mem_resume_enabler = phys_to_virt(RESUME_ENABLE_ADDR);
      u32 *mem_resume_bt      = phys_to_virt(RESUME_BT_ADDR);
      u32 *mem_resume_unknown = phys_to_virt(RESUME_UNKNOWN_ADDR);

      for (i = 0; i < BOOTSTRAP_WORDS; i++)
            mem_resume_vector[i] = save_buffer[i];
      *mem_resume_enabler = save_buffer[i++];
      *mem_resume_bt        = save_buffer[i++];
      *mem_resume_unknown = save_buffer[i++];

      return 0;
}

static struct sysdev_class mioa701_sysclass = {
      .name = "mioa701",
};

static struct sys_device sysdev_bootstrap = {
      .cls        = &mioa701_sysclass,
};

static struct sysdev_driver driver_bootstrap = {
      .suspend    = &mioa701_sys_suspend,
      .resume           = &mioa701_sys_resume,
};

static int __init bootstrap_init(void)
{
      int rc;
      int save_size = mioa701_bootstrap_lg + (sizeof(u32) * 3);

      rc = sysdev_class_register(&mioa701_sysclass);
      if (rc) {
            printk(KERN_ERR "Failed registering mioa701 sys class\n");
            return -ENODEV;
      }
      rc = sysdev_register(&sysdev_bootstrap);
      if (rc) {
            printk(KERN_ERR "Failed registering mioa701 sys device\n");
            return -ENODEV;
      }
      rc = sysdev_driver_register(&mioa701_sysclass, &driver_bootstrap);
      if (rc) {
            printk(KERN_ERR "Failed registering PMU sys driver\n");
            return -ENODEV;
      }

      save_buffer = kmalloc(save_size, GFP_KERNEL);
      if (!save_buffer)
            return -ENOMEM;
      printk(KERN_INFO "MioA701: allocated %d bytes for bootstrap\n",
             save_size);
      return 0;
}

static void bootstrap_exit(void)
{
      kfree(save_buffer);
      sysdev_driver_unregister(&mioa701_sysclass, &driver_bootstrap);
      sysdev_unregister(&sysdev_bootstrap);
      sysdev_class_unregister(&mioa701_sysclass);

      printk(KERN_CRIT "Unregistering mioa701 suspend will hang next"
             "resume !!!\n");
}

/*
 * Power Supply
 */
static char *supplicants[] = {
      "mioa701_battery"
};

static void mioa701_set_charge(int flags)
{
      gpio_set_value(GPIO9_CHARGE_nEN, !flags);
}

static struct pda_power_pdata power_pdata = {
      .is_ac_online     = is_usb_connected,
      .set_charge = mioa701_set_charge,
      .supplied_to = supplicants,
      .num_supplicants = ARRAY_SIZE(supplicants),
};

static struct resource power_resources[] = {
      [0] = {
            .name = "ac",
            .start      = gpio_to_irq(GPIO13_USB_DETECT),
            .end  = gpio_to_irq(GPIO13_USB_DETECT),
            .flags      = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE |
            IORESOURCE_IRQ_LOWEDGE,
      },
};

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

#if defined(CONFIG_PDA_POWER) && defined(CONFIG_TOUCHSCREEN_WM97XX)
static struct wm97xx *battery_wm;

static enum power_supply_property battery_props[] = {
      POWER_SUPPLY_PROP_STATUS,
      POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
      POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
      POWER_SUPPLY_PROP_VOLTAGE_NOW,
      POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,     /* Necessary for apm */
};

static int get_battery_voltage(void)
{
      int adc = -1;

      if (battery_wm)
            adc = wm97xx_read_aux_adc(battery_wm, WM97XX_AUX_ID1);
      return adc;
}

static int get_battery_status(struct power_supply *b)
{
      int status;

      if (is_usb_connected())
            status = POWER_SUPPLY_STATUS_CHARGING;
      else
            status = POWER_SUPPLY_STATUS_DISCHARGING;

      return status;
}

static int get_property(struct power_supply *b,
                  enum power_supply_property psp,
                  union power_supply_propval *val)
{
      int rc = 0;

      switch (psp) {
      case POWER_SUPPLY_PROP_STATUS:
            val->intval = get_battery_status(b);
            break;
      case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
            val->intval = 0xfd0;
            break;
      case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
            val->intval = 0xc00;
            break;
      case POWER_SUPPLY_PROP_VOLTAGE_NOW:
            val->intval = get_battery_voltage();
            break;
      case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
            val->intval = 100;
            break;
      default:
            val->intval = -1;
            rc = -1;
      }

      return rc;
};

static struct power_supply battery_ps = {
      .name = "mioa701_battery",
      .type = POWER_SUPPLY_TYPE_BATTERY,
      .get_property = get_property,
      .properties = battery_props,
      .num_properties = ARRAY_SIZE(battery_props),
};

static int battery_probe(struct platform_device *pdev)
{
      struct wm97xx *wm = platform_get_drvdata(pdev);
      int rc;

      battery_wm = wm;

      rc = power_supply_register(NULL, &battery_ps);
      if (rc)
            dev_err(&pdev->dev,
            "Could not register mioa701 battery -> %d\n", rc);
      return rc;
}

static int battery_remove(struct platform_device *pdev)
{
      battery_wm = NULL;
      return 0;
}

static struct platform_driver mioa701_battery_driver = {
      .driver = {
            .name = "wm97xx-battery",
      },
      .probe = battery_probe,
      .remove = battery_remove
};

static int __init mioa701_battery_init(void)
{
      int rc;

      rc = platform_driver_register(&mioa701_battery_driver);
      if (rc)
            printk(KERN_ERR "Could not register mioa701 battery driver\n");
      return rc;
}

#else
static int __init mioa701_battery_init(void)
{
      return 0;
}
#endif

/*
 * Mio global
 */

/* Devices */
#define MIO_PARENT_DEV(var, strname, tparent, pdata)  \
static struct platform_device var = {                 \
      .name       = strname,              \
      .id         = -1,                   \
      .dev        = {                     \
            .platform_data = pdata,             \
            .parent     = tparent,              \
      },                                  \
};
#define MIO_SIMPLE_DEV(var, strname, pdata)     \
      MIO_PARENT_DEV(var, strname, NULL, pdata)

MIO_SIMPLE_DEV(mioa701_gpio_keys, "gpio-keys",      &mioa701_gpio_keys_data)
MIO_PARENT_DEV(mioa701_backlight, "pwm-backlight",  &pxa27x_device_pwm0.dev,
            &mioa701_backlight_data);
MIO_SIMPLE_DEV(mioa701_led,     "leds-gpio",        &gpio_led_info)
MIO_SIMPLE_DEV(pxa2xx_pcm,      "pxa2xx-pcm",       NULL)
MIO_SIMPLE_DEV(pxa2xx_ac97,     "pxa2xx-ac97",    NULL)
MIO_PARENT_DEV(mio_wm9713_codec,  "wm9713-codec",   &pxa2xx_ac97.dev, NULL)
MIO_SIMPLE_DEV(mioa701_sound,   "mioa701-wm9713", NULL)
MIO_SIMPLE_DEV(mioa701_board,   "mioa701-board",  NULL)

static struct platform_device *devices[] __initdata = {
      &mioa701_gpio_keys,
      &mioa701_backlight,
      &mioa701_led,
      &pxa2xx_pcm,
      &pxa2xx_ac97,
      &mio_wm9713_codec,
      &mioa701_sound,
      &power_dev,
      &strataflash,
      &mioa701_board
};

static void mioa701_machine_exit(void);

static void mioa701_poweroff(void)
{
      mioa701_machine_exit();
      gpio_set_value(GPIO18_POWEROFF, 1);
}

static void mioa701_restart(char c)
{
      mioa701_machine_exit();
      arm_machine_restart(c);
}

struct gpio_ress global_gpios[] = {
      MIO_GPIO_OUT(GPIO9_CHARGE_nEN, 1, "Charger enable"),
      MIO_GPIO_OUT(GPIO18_POWEROFF, 0, "Power Off"),
      MIO_GPIO_OUT(GPIO87_LCD_POWER, 0, "LCD Power")
};

static void __init mioa701_machine_init(void)
{
      PSLR  = 0xff100000; /* SYSDEL=125ms, PWRDEL=125ms, PSLR_SL_ROD=1 */
      PCFR = PCFR_DC_EN | PCFR_GPR_EN | PCFR_OPDE;
      RTTR = 32768 - 1; /* Reset crazy WinCE value */
      UP2OCR = UP2OCR_HXOE;

      pxa2xx_mfp_config(ARRAY_AND_SIZE(mioa701_pin_config));
      mio_gpio_request(ARRAY_AND_SIZE(global_gpios));
      bootstrap_init();
      set_pxa_fb_info(&mioa701_pxafb_info);
      pxa_set_mci_info(&mioa701_mci_info);
      pxa_set_keypad_info(&mioa701_keypad_info);
      udc_init();
      pm_power_off = mioa701_poweroff;
      arm_pm_restart = mioa701_restart;
      platform_add_devices(devices, ARRAY_SIZE(devices));
      gsm_init();
      mioa701_battery_init();
}

static void mioa701_machine_exit(void)
{
      udc_exit();
      bootstrap_exit();
      gsm_exit();
}

MACHINE_START(MIOA701, "MIO A701")
      .phys_io    = 0x40000000,
      .io_pg_offst      = (io_p2v(0x40000000) >> 18) & 0xfffc,
      .boot_params      = 0xa0000100,
      .map_io           = &pxa_map_io,
      .init_irq   = &pxa27x_init_irq,
      .init_machine     = mioa701_machine_init,
      .timer            = &pxa_timer,
MACHINE_END

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