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balloon3.c

/*
 *  linux/arch/arm/mach-pxa/balloon3.c
 *
 *  Support for Balloonboard.org Balloon3 board.
 *
 *  Author: Nick Bane, Wookey, Jonathan McDowell
 *  Created:      June, 2006
 *  Copyright:    Toby Churchill Ltd
 *  Derived from mainstone.c, by Nico Pitre
 *
 *  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/platform_device.h>
#include <linux/sysdev.h>
#include <linux/interrupt.h>
#include <linux/sched.h>
#include <linux/bitops.h>
#include <linux/fb.h>
#include <linux/gpio.h>
#include <linux/ioport.h>
#include <linux/ucb1400.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/types.h>
#include <linux/i2c/pcf857x.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/physmap.h>
#include <linux/regulator/max1586.h>

#include <asm/setup.h>
#include <asm/mach-types.h>
#include <asm/irq.h>
#include <asm/sizes.h>

#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>
#include <asm/mach/flash.h>

#include <mach/pxa27x.h>
#include <mach/balloon3.h>
#include <mach/audio.h>
#include <mach/pxafb.h>
#include <mach/mmc.h>
#include <mach/udc.h>
#include <mach/pxa27x-udc.h>
#include <mach/irda.h>
#include <mach/ohci.h>

#include <plat/i2c.h>

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

/******************************************************************************
 * Pin configuration
 ******************************************************************************/
static unsigned long balloon3_pin_config[] __initdata = {
      /* Select BTUART 'COM1/ttyS0' as IO option for pins 42/43/44/45 */
      GPIO42_BTUART_RXD,
      GPIO43_BTUART_TXD,
      GPIO44_BTUART_CTS,
      GPIO45_BTUART_RTS,

      /* Reset, configured as GPIO wakeup source */
      GPIO1_GPIO | WAKEUP_ON_EDGE_BOTH,
};

/******************************************************************************
 * Compatibility: Parameter parsing
 ******************************************************************************/
static unsigned long balloon3_irq_enabled;

static unsigned long balloon3_features_present =
            (1 << BALLOON3_FEATURE_OHCI) | (1 << BALLOON3_FEATURE_CF) |
            (1 << BALLOON3_FEATURE_AUDIO) |
            (1 << BALLOON3_FEATURE_TOPPOLY);

int balloon3_has(enum balloon3_features feature)
{
      return (balloon3_features_present & (1 << feature)) ? 1 : 0;
}
EXPORT_SYMBOL_GPL(balloon3_has);

int __init parse_balloon3_features(char *arg)
{
      if (!arg)
            return 0;

      return strict_strtoul(arg, 0, &balloon3_features_present);
}
early_param("balloon3_features", parse_balloon3_features);

/******************************************************************************
 * Compact Flash slot
 ******************************************************************************/
#if   defined(CONFIG_PCMCIA_PXA2XX) || defined(CONFIG_PCMCIA_PXA2XX_MODULE)
static unsigned long balloon3_cf_pin_config[] __initdata = {
      GPIO48_nPOE,
      GPIO49_nPWE,
      GPIO50_nPIOR,
      GPIO51_nPIOW,
      GPIO85_nPCE_1,
      GPIO54_nPCE_2,
      GPIO79_PSKTSEL,
      GPIO55_nPREG,
      GPIO56_nPWAIT,
      GPIO57_nIOIS16,
};

static void __init balloon3_cf_init(void)
{
      if (!balloon3_has(BALLOON3_FEATURE_CF))
            return;

      pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_cf_pin_config));
}
#else
static inline void balloon3_cf_init(void) {}
#endif

/******************************************************************************
 * NOR Flash
 ******************************************************************************/
#if defined(CONFIG_MTD_PHYSMAP) || defined(CONFIG_MTD_PHYSMAP_MODULE)
static struct mtd_partition balloon3_nor_partitions[] = {
      {
            .name       = "Flash",
            .offset           = 0x00000000,
            .size       = MTDPART_SIZ_FULL,
      }
};

static struct physmap_flash_data balloon3_flash_data[] = {
      {
            .width            = 2,  /* bankwidth in bytes */
            .parts            = balloon3_nor_partitions,
            .nr_parts   = ARRAY_SIZE(balloon3_nor_partitions)
      }
};

static struct resource balloon3_flash_resource = {
      .start      = PXA_CS0_PHYS,
      .end  = PXA_CS0_PHYS + SZ_64M - 1,
      .flags      = IORESOURCE_MEM,
};

static struct platform_device balloon3_flash = {
      .name       = "physmap-flash",
      .id         = 0,
      .resource   = &balloon3_flash_resource,
      .num_resources    = 1,
      .dev        = {
            .platform_data = balloon3_flash_data,
      },
};
static void __init balloon3_nor_init(void)
{
      platform_device_register(&balloon3_flash);
}
#else
static inline void balloon3_nor_init(void) {}
#endif

/******************************************************************************
 * Audio and Touchscreen
 ******************************************************************************/
#if   defined(CONFIG_TOUCHSCREEN_UCB1400) || \
      defined(CONFIG_TOUCHSCREEN_UCB1400_MODULE)
static unsigned long balloon3_ac97_pin_config[] __initdata = {
      GPIO28_AC97_BITCLK,
      GPIO29_AC97_SDATA_IN_0,
      GPIO30_AC97_SDATA_OUT,
      GPIO31_AC97_SYNC,
      GPIO113_AC97_nRESET,
      GPIO95_GPIO,
};

static struct ucb1400_pdata vpac270_ucb1400_pdata = {
      .irq        = IRQ_GPIO(BALLOON3_GPIO_CODEC_IRQ),
};


static struct platform_device balloon3_ucb1400_device = {
      .name       = "ucb1400_core",
      .id         = -1,
      .dev        = {
            .platform_data = &vpac270_ucb1400_pdata,
      },
};

static void __init balloon3_ts_init(void)
{
      if (!balloon3_has(BALLOON3_FEATURE_AUDIO))
            return;

      pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_ac97_pin_config));
      pxa_set_ac97_info(NULL);
      platform_device_register(&balloon3_ucb1400_device);
}
#else
static inline void balloon3_ts_init(void) {}
#endif

/******************************************************************************
 * Framebuffer
 ******************************************************************************/
#if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
static unsigned long balloon3_lcd_pin_config[] __initdata = {
      GPIOxx_LCD_TFT_16BPP,
      GPIO99_GPIO,
};

static struct pxafb_mode_info balloon3_lcd_modes[] = {
      {
            .pixclock         = 38000,
            .xres             = 480,
            .yres             = 640,
            .bpp              = 16,
            .hsync_len        = 8,
            .left_margin            = 8,
            .right_margin           = 8,
            .vsync_len        = 2,
            .upper_margin           = 4,
            .lower_margin           = 5,
            .sync             = 0,
      },
};

static struct pxafb_mach_info balloon3_lcd_screen = {
      .modes                  = balloon3_lcd_modes,
      .num_modes        = ARRAY_SIZE(balloon3_lcd_modes),
      .lcd_conn         = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
};

static void balloon3_backlight_power(int on)
{
      gpio_set_value(BALLOON3_GPIO_RUN_BACKLIGHT, on);
}

static void __init balloon3_lcd_init(void)
{
      int ret;

      if (!balloon3_has(BALLOON3_FEATURE_TOPPOLY))
            return;

      pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_lcd_pin_config));

      ret = gpio_request(BALLOON3_GPIO_RUN_BACKLIGHT, "BKL-ON");
      if (ret) {
            pr_err("Requesting BKL-ON GPIO failed!\n");
            goto err;
      }

      ret = gpio_direction_output(BALLOON3_GPIO_RUN_BACKLIGHT, 1);
      if (ret) {
            pr_err("Setting BKL-ON GPIO direction failed!\n");
            goto err2;
      }

      balloon3_lcd_screen.pxafb_backlight_power = balloon3_backlight_power;
      set_pxa_fb_info(&balloon3_lcd_screen);
      return;

err2:
      gpio_free(BALLOON3_GPIO_RUN_BACKLIGHT);
err:
      return;
}
#else
static inline void balloon3_lcd_init(void) {}
#endif

/******************************************************************************
 * SD/MMC card controller
 ******************************************************************************/
#if defined(CONFIG_MMC_PXA) || defined(CONFIG_MMC_PXA_MODULE)
static unsigned long balloon3_mmc_pin_config[] __initdata = {
      GPIO32_MMC_CLK,
      GPIO92_MMC_DAT_0,
      GPIO109_MMC_DAT_1,
      GPIO110_MMC_DAT_2,
      GPIO111_MMC_DAT_3,
      GPIO112_MMC_CMD,
};

static struct pxamci_platform_data balloon3_mci_platform_data = {
      .ocr_mask         = MMC_VDD_32_33 | MMC_VDD_33_34,
      .gpio_card_detect = -1,
      .gpio_card_ro           = -1,
      .gpio_power       = -1,
      .detect_delay_ms  = 200,
};

static void __init balloon3_mmc_init(void)
{
      pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_mmc_pin_config));
      pxa_set_mci_info(&balloon3_mci_platform_data);
}
#else
static inline void balloon3_mmc_init(void) {}
#endif

/******************************************************************************
 * USB Gadget
 ******************************************************************************/
#if defined(CONFIG_USB_GADGET_PXA27X)||defined(CONFIG_USB_GADGET_PXA27X_MODULE)
static void balloon3_udc_command(int cmd)
{
      if (cmd == PXA2XX_UDC_CMD_CONNECT)
            UP2OCR |= UP2OCR_DPPUE | UP2OCR_DPPUBE;
      else if (cmd == PXA2XX_UDC_CMD_DISCONNECT)
            UP2OCR &= ~UP2OCR_DPPUE;
}

static int balloon3_udc_is_connected(void)
{
      return 1;
}

static struct pxa2xx_udc_mach_info balloon3_udc_info __initdata = {
      .udc_command            = balloon3_udc_command,
      .udc_is_connected = balloon3_udc_is_connected,
      .gpio_pullup            = -1,
};

static void __init balloon3_udc_init(void)
{
      pxa_set_udc_info(&balloon3_udc_info);
      platform_device_register(&balloon3_gpio_vbus);
}
#else
static inline void balloon3_udc_init(void) {}
#endif

/******************************************************************************
 * IrDA
 ******************************************************************************/
#if defined(CONFIG_IRDA) || defined(CONFIG_IRDA_MODULE)
static struct pxaficp_platform_data balloon3_ficp_platform_data = {
      .transceiver_cap  = IR_FIRMODE | IR_SIRMODE | IR_OFF,
};

static void __init balloon3_irda_init(void)
{
      pxa_set_ficp_info(&balloon3_ficp_platform_data);
}
#else
static inline void balloon3_irda_init(void) {}
#endif

/******************************************************************************
 * USB Host
 ******************************************************************************/
#if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
static unsigned long balloon3_uhc_pin_config[] __initdata = {
      GPIO88_USBH1_PWR,
      GPIO89_USBH1_PEN,
};

static struct pxaohci_platform_data balloon3_ohci_info = {
      .port_mode  = PMM_PERPORT_MODE,
      .flags            = ENABLE_PORT_ALL | POWER_CONTROL_LOW | POWER_SENSE_LOW,
};

static void __init balloon3_uhc_init(void)
{
      if (!balloon3_has(BALLOON3_FEATURE_OHCI))
            return;
      pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_uhc_pin_config));
      pxa_set_ohci_info(&balloon3_ohci_info);
}
#else
static inline void balloon3_uhc_init(void) {}
#endif

/******************************************************************************
 * LEDs
 ******************************************************************************/
#if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
static unsigned long balloon3_led_pin_config[] __initdata = {
      GPIO9_GPIO, /* NAND activity LED */
      GPIO10_GPIO,      /* Heartbeat LED */
};

struct gpio_led balloon3_gpio_leds[] = {
      {
            .name             = "balloon3:green:idle",
            .default_trigger  = "heartbeat",
            .gpio             = BALLOON3_GPIO_LED_IDLE,
            .active_low       = 1,
      }, {
            .name             = "balloon3:green:nand",
            .default_trigger  = "nand-disk",
            .gpio             = BALLOON3_GPIO_LED_NAND,
            .active_low       = 1,
      },
};

static struct gpio_led_platform_data balloon3_gpio_led_info = {
      .leds       = balloon3_gpio_leds,
      .num_leds   = ARRAY_SIZE(balloon3_gpio_leds),
};

static struct platform_device balloon3_leds = {
      .name = "leds-gpio",
      .id   = 0,
      .dev  = {
            .platform_data    = &balloon3_gpio_led_info,
      }
};

struct gpio_led balloon3_pcf_gpio_leds[] = {
      {
            .name             = "balloon3:green:led0",
            .gpio             = BALLOON3_PCF_GPIO_LED0,
            .active_low       = 1,
      }, {
            .name             = "balloon3:green:led1",
            .gpio             = BALLOON3_PCF_GPIO_LED1,
            .active_low       = 1,
      }, {
            .name             = "balloon3:orange:led2",
            .gpio             = BALLOON3_PCF_GPIO_LED2,
            .active_low       = 1,
      }, {
            .name             = "balloon3:orange:led3",
            .gpio             = BALLOON3_PCF_GPIO_LED3,
            .active_low       = 1,
      }, {
            .name             = "balloon3:orange:led4",
            .gpio             = BALLOON3_PCF_GPIO_LED4,
            .active_low       = 1,
      }, {
            .name             = "balloon3:orange:led5",
            .gpio             = BALLOON3_PCF_GPIO_LED5,
            .active_low       = 1,
      }, {
            .name             = "balloon3:red:led6",
            .gpio             = BALLOON3_PCF_GPIO_LED6,
            .active_low       = 1,
      }, {
            .name             = "balloon3:red:led7",
            .gpio             = BALLOON3_PCF_GPIO_LED7,
            .active_low       = 1,
      },
};

static struct gpio_led_platform_data balloon3_pcf_gpio_led_info = {
      .leds       = balloon3_pcf_gpio_leds,
      .num_leds   = ARRAY_SIZE(balloon3_pcf_gpio_leds),
};

static struct platform_device balloon3_pcf_leds = {
      .name = "leds-gpio",
      .id   = 1,
      .dev  = {
            .platform_data    = &balloon3_pcf_gpio_led_info,
      }
};

static void __init balloon3_leds_init(void)
{
      pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_led_pin_config));
      platform_device_register(&balloon3_leds);
      platform_device_register(&balloon3_pcf_leds);
}
#else
static inline void balloon3_leds_init(void) {}
#endif

/******************************************************************************
 * FPGA IRQ
 ******************************************************************************/
static void balloon3_mask_irq(struct irq_data *d)
{
      int balloon3_irq = (d->irq - BALLOON3_IRQ(0));
      balloon3_irq_enabled &= ~(1 << balloon3_irq);
      __raw_writel(~balloon3_irq_enabled, BALLOON3_INT_CONTROL_REG);
}

static void balloon3_unmask_irq(struct irq_data *d)
{
      int balloon3_irq = (d->irq - BALLOON3_IRQ(0));
      balloon3_irq_enabled |= (1 << balloon3_irq);
      __raw_writel(~balloon3_irq_enabled, BALLOON3_INT_CONTROL_REG);
}

static struct irq_chip balloon3_irq_chip = {
      .name       = "FPGA",
      .irq_ack    = balloon3_mask_irq,
      .irq_mask   = balloon3_mask_irq,
      .irq_unmask = balloon3_unmask_irq,
};

static void balloon3_irq_handler(unsigned int irq, struct irq_desc *desc)
{
      unsigned long pending = __raw_readl(BALLOON3_INT_CONTROL_REG) &
                              balloon3_irq_enabled;
      do {
            /* clear useless edge notification */
            if (desc->irq_data.chip->irq_ack) {
                  struct irq_data *d;

                  d = irq_get_irq_data(BALLOON3_AUX_NIRQ);
                  desc->irq_data.chip->irq_ack(d);
            }

            while (pending) {
                  irq = BALLOON3_IRQ(0) + __ffs(pending);
                  generic_handle_irq(irq);
                  pending &= pending - 1;
            }
            pending = __raw_readl(BALLOON3_INT_CONTROL_REG) &
                        balloon3_irq_enabled;
      } while (pending);
}

static void __init balloon3_init_irq(void)
{
      int irq;

      pxa27x_init_irq();
      /* setup extra Balloon3 irqs */
      for (irq = BALLOON3_IRQ(0); irq <= BALLOON3_IRQ(7); irq++) {
            set_irq_chip(irq, &balloon3_irq_chip);
            set_irq_handler(irq, handle_level_irq);
            set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
      }

      set_irq_chained_handler(BALLOON3_AUX_NIRQ, balloon3_irq_handler);
      set_irq_type(BALLOON3_AUX_NIRQ, IRQ_TYPE_EDGE_FALLING);

      pr_debug("%s: chained handler installed - irq %d automatically "
            "enabled\n", __func__, BALLOON3_AUX_NIRQ);
}

/******************************************************************************
 * GPIO expander
 ******************************************************************************/
#if defined(CONFIG_GPIO_PCF857X) || defined(CONFIG_GPIO_PCF857X_MODULE)
static struct pcf857x_platform_data balloon3_pcf857x_pdata = {
      .gpio_base  = BALLOON3_PCF_GPIO_BASE,
      .n_latch    = 0,
      .setup            = NULL,
      .teardown   = NULL,
      .context    = NULL,
};

static struct i2c_board_info __initdata balloon3_i2c_devs[] = {
      {
            I2C_BOARD_INFO("pcf8574a", 0x38),
            .platform_data    = &balloon3_pcf857x_pdata,
      },
};

static void __init balloon3_i2c_init(void)
{
      pxa_set_i2c_info(NULL);
      i2c_register_board_info(0, ARRAY_AND_SIZE(balloon3_i2c_devs));
}
#else
static inline void balloon3_i2c_init(void) {}
#endif

/******************************************************************************
 * NAND
 ******************************************************************************/
#if defined(CONFIG_MTD_NAND_PLATFORM)||defined(CONFIG_MTD_NAND_PLATFORM_MODULE)
static void balloon3_nand_cmd_ctl(struct mtd_info *mtd, int cmd, unsigned int ctrl)
{
      struct nand_chip *this = mtd->priv;
      uint8_t balloon3_ctl_set = 0, balloon3_ctl_clr = 0;

      if (ctrl & NAND_CTRL_CHANGE) {
            if (ctrl & NAND_CLE)
                  balloon3_ctl_set |= BALLOON3_NAND_CONTROL_FLCLE;
            else
                  balloon3_ctl_clr |= BALLOON3_NAND_CONTROL_FLCLE;

            if (ctrl & NAND_ALE)
                  balloon3_ctl_set |= BALLOON3_NAND_CONTROL_FLALE;
            else
                  balloon3_ctl_clr |= BALLOON3_NAND_CONTROL_FLALE;

            if (balloon3_ctl_clr)
                  __raw_writel(balloon3_ctl_clr,
                        BALLOON3_NAND_CONTROL_REG);
            if (balloon3_ctl_set)
                  __raw_writel(balloon3_ctl_set,
                        BALLOON3_NAND_CONTROL_REG |
                        BALLOON3_FPGA_SETnCLR);
      }

      if (cmd != NAND_CMD_NONE)
            writeb(cmd, this->IO_ADDR_W);
}

static void balloon3_nand_select_chip(struct mtd_info *mtd, int chip)
{
      if (chip < 0 || chip > 3)
            return;

      /* Assert all nCE lines */
      __raw_writew(
            BALLOON3_NAND_CONTROL_FLCE0 | BALLOON3_NAND_CONTROL_FLCE1 |
            BALLOON3_NAND_CONTROL_FLCE2 | BALLOON3_NAND_CONTROL_FLCE3,
            BALLOON3_NAND_CONTROL_REG | BALLOON3_FPGA_SETnCLR);

      /* Deassert correct nCE line */
      __raw_writew(BALLOON3_NAND_CONTROL_FLCE0 << chip,
            BALLOON3_NAND_CONTROL_REG);
}

static int balloon3_nand_dev_ready(struct mtd_info *mtd)
{
      return __raw_readl(BALLOON3_NAND_STAT_REG) & BALLOON3_NAND_STAT_RNB;
}

static int balloon3_nand_probe(struct platform_device *pdev)
{
      uint16_t ver;
      int ret;

      __raw_writew(BALLOON3_NAND_CONTROL2_16BIT,
            BALLOON3_NAND_CONTROL2_REG | BALLOON3_FPGA_SETnCLR);

      ver = __raw_readw(BALLOON3_FPGA_VER);
      if (ver < 0x4f08)
            pr_warn("The FPGA code, version 0x%04x, is too old. "
                  "NAND support might be broken in this version!", ver);

      /* Power up the NAND chips */
      ret = gpio_request(BALLOON3_GPIO_RUN_NAND, "NAND");
      if (ret)
            goto err1;

      ret = gpio_direction_output(BALLOON3_GPIO_RUN_NAND, 1);
      if (ret)
            goto err2;

      gpio_set_value(BALLOON3_GPIO_RUN_NAND, 1);

      /* Deassert all nCE lines and write protect line */
      __raw_writel(
            BALLOON3_NAND_CONTROL_FLCE0 | BALLOON3_NAND_CONTROL_FLCE1 |
            BALLOON3_NAND_CONTROL_FLCE2 | BALLOON3_NAND_CONTROL_FLCE3 |
            BALLOON3_NAND_CONTROL_FLWP,
            BALLOON3_NAND_CONTROL_REG | BALLOON3_FPGA_SETnCLR);
      return 0;

err2:
      gpio_free(BALLOON3_GPIO_RUN_NAND);
err1:
      return ret;
}

static void balloon3_nand_remove(struct platform_device *pdev)
{
      /* Power down the NAND chips */
      gpio_set_value(BALLOON3_GPIO_RUN_NAND, 0);
      gpio_free(BALLOON3_GPIO_RUN_NAND);
}

static struct mtd_partition balloon3_partition_info[] = {
      [0] = {
            .name = "Boot",
            .offset     = 0,
            .size = SZ_4M,
      },
      [1] = {
            .name = "RootFS",
            .offset     = MTDPART_OFS_APPEND,
            .size = MTDPART_SIZ_FULL
      },
};

static const char *balloon3_part_probes[] = { "cmdlinepart", NULL };

struct platform_nand_data balloon3_nand_pdata = {
      .chip = {
            .nr_chips   = 4,
            .chip_offset      = 0,
            .nr_partitions    = ARRAY_SIZE(balloon3_partition_info),
            .partitions = balloon3_partition_info,
            .chip_delay = 50,
            .part_probe_types = balloon3_part_probes,
      },
      .ctrl = {
            .hwcontrol  = 0,
            .dev_ready  = balloon3_nand_dev_ready,
            .select_chip      = balloon3_nand_select_chip,
            .cmd_ctrl   = balloon3_nand_cmd_ctl,
            .probe            = balloon3_nand_probe,
            .remove           = balloon3_nand_remove,
      },
};

static struct resource balloon3_nand_resource[] = {
      [0] = {
            .start = BALLOON3_NAND_BASE,
            .end   = BALLOON3_NAND_BASE + 0x4,
            .flags = IORESOURCE_MEM,
      },
};

static struct platform_device balloon3_nand = {
      .name       = "gen_nand",
      .num_resources    = ARRAY_SIZE(balloon3_nand_resource),
      .resource   = balloon3_nand_resource,
      .id         = -1,
      .dev        = {
            .platform_data = &balloon3_nand_pdata,
      }
};

static void __init balloon3_nand_init(void)
{
      platform_device_register(&balloon3_nand);
}
#else
static inline void balloon3_nand_init(void) {}
#endif

/******************************************************************************
 * Core power regulator
 ******************************************************************************/
#if defined(CONFIG_REGULATOR_MAX1586) || \
    defined(CONFIG_REGULATOR_MAX1586_MODULE)
static struct regulator_consumer_supply balloon3_max1587a_consumers[] = {
      {
            .supply     = "vcc_core",
      }
};

static struct regulator_init_data balloon3_max1587a_v3_info = {
      .constraints = {
            .name       = "vcc_core range",
            .min_uV           = 900000,
            .max_uV           = 1705000,
            .always_on  = 1,
            .valid_ops_mask   = REGULATOR_CHANGE_VOLTAGE,
      },
      .consumer_supplies      = balloon3_max1587a_consumers,
      .num_consumer_supplies  = ARRAY_SIZE(balloon3_max1587a_consumers),
};

static struct max1586_subdev_data balloon3_max1587a_subdevs[] = {
      {
            .name       = "vcc_core",
            .id         = MAX1586_V3,
            .platform_data    = &balloon3_max1587a_v3_info,
      }
};

static struct max1586_platform_data balloon3_max1587a_info = {
      .subdevs     = balloon3_max1587a_subdevs,
      .num_subdevs = ARRAY_SIZE(balloon3_max1587a_subdevs),
      .v3_gain     = MAX1586_GAIN_R24_3k32, /* 730..1550 mV */
};

static struct i2c_board_info __initdata balloon3_pi2c_board_info[] = {
      {
            I2C_BOARD_INFO("max1586", 0x14),
            .platform_data    = &balloon3_max1587a_info,
      },
};

static void __init balloon3_pmic_init(void)
{
      pxa27x_set_i2c_power_info(NULL);
      i2c_register_board_info(1, ARRAY_AND_SIZE(balloon3_pi2c_board_info));
}
#else
static inline void balloon3_pmic_init(void) {}
#endif

/******************************************************************************
 * Machine init
 ******************************************************************************/
static void __init balloon3_init(void)
{
      ARB_CNTRL = ARB_CORE_PARK | 0x234;

      pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_pin_config));

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

      balloon3_i2c_init();
      balloon3_irda_init();
      balloon3_lcd_init();
      balloon3_leds_init();
      balloon3_mmc_init();
      balloon3_nand_init();
      balloon3_nor_init();
      balloon3_pmic_init();
      balloon3_ts_init();
      balloon3_udc_init();
      balloon3_uhc_init();
      balloon3_cf_init();
}

static struct map_desc balloon3_io_desc[] __initdata = {
      {     /* CPLD/FPGA */
            .virtual    =  BALLOON3_FPGA_VIRT,
            .pfn        = __phys_to_pfn(BALLOON3_FPGA_PHYS),
            .length           = BALLOON3_FPGA_LENGTH,
            .type       = MT_DEVICE,
      },
};

static void __init balloon3_map_io(void)
{
      pxa27x_map_io();
      iotable_init(balloon3_io_desc, ARRAY_SIZE(balloon3_io_desc));
}

MACHINE_START(BALLOON3, "Balloon3")
      /* Maintainer: Nick Bane. */
      .map_io           = balloon3_map_io,
      .nr_irqs    = BALLOON3_NR_IRQS,
      .init_irq   = balloon3_init_irq,
      .timer            = &pxa_timer,
      .init_machine     = balloon3_init,
      .boot_params      = PHYS_OFFSET + 0x100,
MACHINE_END

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