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cm-x270.c

/*
 * linux/arch/arm/mach-pxa/cm-x270.c
 *
 * Copyright (C) 2007, 2008 CompuLab, Ltd.
 * Mike Rapoport <mike@compulab.co.il>
 *
 * 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/platform_device.h>
#include <linux/sysdev.h>
#include <linux/irq.h>
#include <linux/gpio.h>

#include <linux/dm9000.h>
#include <linux/rtc-v3020.h>
#include <video/mbxfb.h>
#include <linux/leds.h>

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

#include <mach/pxa2xx-regs.h>
#include <mach/mfp-pxa27x.h>
#include <mach/pxa-regs.h>
#include <mach/audio.h>
#include <mach/pxafb.h>
#include <mach/ohci.h>
#include <mach/mmc.h>
#include <mach/bitfield.h>

#include <asm/hardware/it8152.h>

#include "generic.h"
#include "cm-x270-pci.h"

/* virtual addresses for statically mapped regions */
#define CMX270_VIRT_BASE      (0xe8000000)
#define CMX270_IT8152_VIRT    (CMX270_VIRT_BASE)

#define RTC_PHYS_BASE         (PXA_CS1_PHYS + (5 << 22))
#define DM9000_PHYS_BASE      (PXA_CS1_PHYS + (6 << 22))

/* GPIO IRQ usage */
#define GPIO10_ETHIRQ         (10)
#define GPIO22_IT8152_IRQ     (22)
#define GPIO83_MMC_IRQ        (83)
#define GPIO95_GFXIRQ         (95)

#define CMX270_ETHIRQ         IRQ_GPIO(GPIO10_ETHIRQ)
#define CMX270_IT8152_IRQ     IRQ_GPIO(GPIO22_IT8152_IRQ)
#define CMX270_MMC_IRQ        IRQ_GPIO(GPIO83_MMC_IRQ)
#define CMX270_GFXIRQ         IRQ_GPIO(GPIO95_GFXIRQ)

/* MMC power enable */
#define GPIO105_MMC_POWER     (105)

static unsigned long cmx270_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 */
      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,
      GPIO77_LCD_BIAS,

      /* I2C */
      GPIO117_I2C_SCL,
      GPIO118_I2C_SDA,

      /* SSP1 */
      GPIO23_SSP1_SCLK,
      GPIO24_SSP1_SFRM,
      GPIO25_SSP1_TXD,
      GPIO26_SSP1_RXD,

      /* SSP2 */
      GPIO19_SSP2_SCLK,
      GPIO14_SSP2_SFRM,
      GPIO87_SSP2_TXD,
      GPIO88_SSP2_RXD,

      /* PC Card */
      GPIO48_nPOE,
      GPIO49_nPWE,
      GPIO50_nPIOR,
      GPIO51_nPIOW,
      GPIO85_nPCE_1,
      GPIO54_nPCE_2,
      GPIO55_nPREG,
      GPIO56_nPWAIT,
      GPIO57_nIOIS16,

      /* SDRAM and local bus */
      GPIO15_nCS_1,
      GPIO78_nCS_2,
      GPIO79_nCS_3,
      GPIO80_nCS_4,
      GPIO33_nCS_5,
      GPIO49_nPWE,
      GPIO18_RDY,

      /* GPIO */
      GPIO0_GPIO  | WAKEUP_ON_EDGE_BOTH,
      GPIO105_GPIO      | MFP_LPM_DRIVE_HIGH,   /* MMC/SD power */
      GPIO53_GPIO,                        /* PC card reset */

      /* NAND controls */
      GPIO11_GPIO | MFP_LPM_DRIVE_HIGH,   /* NAND CE# */
      GPIO89_GPIO,                        /* NAND Ready/Busy */

      /* interrupts */
      GPIO10_GPIO,      /* DM9000 interrupt */
      GPIO83_GPIO,      /* MMC card detect */
};

#if defined(CONFIG_DM9000) || defined(CONFIG_DM9000_MODULE)
static struct resource cmx270_dm9000_resource[] = {
      [0] = {
            .start = DM9000_PHYS_BASE,
            .end   = DM9000_PHYS_BASE + 4,
            .flags = IORESOURCE_MEM,
      },
      [1] = {
            .start = DM9000_PHYS_BASE + 8,
            .end   = DM9000_PHYS_BASE + 8 + 500,
            .flags = IORESOURCE_MEM,
      },
      [2] = {
            .start = CMX270_ETHIRQ,
            .end   = CMX270_ETHIRQ,
            .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
      }
};

static struct dm9000_plat_data cmx270_dm9000_platdata = {
      .flags            = DM9000_PLATF_32BITONLY,
};

static struct platform_device cmx270_dm9000_device = {
      .name       = "dm9000",
      .id         = 0,
      .num_resources    = ARRAY_SIZE(cmx270_dm9000_resource),
      .resource   = cmx270_dm9000_resource,
      .dev        = {
            .platform_data = &cmx270_dm9000_platdata,
      }
};

static void __init cmx270_init_dm9000(void)
{
      platform_device_register(&cmx270_dm9000_device);
}
#else
static inline void cmx270_init_dm9000(void) {}
#endif

/* UCB1400 touchscreen controller */
#if defined(CONFIG_TOUCHSCREEN_UCB1400) || defined(CONFIG_TOUCHSCREEN_UCB1400_MODULE)
static struct platform_device cmx270_ts_device = {
      .name       = "ucb1400_ts",
      .id         = -1,
};

static void __init cmx270_init_touchscreen(void)
{
      platform_device_register(&cmx270_ts_device);
}
#else
static inline void cmx270_init_touchscreen(void) {}
#endif

/* V3020 RTC */
#if defined(CONFIG_RTC_DRV_V3020) || defined(CONFIG_RTC_DRV_V3020_MODULE)
static struct resource cmx270_v3020_resource[] = {
      [0] = {
            .start = RTC_PHYS_BASE,
            .end   = RTC_PHYS_BASE + 4,
            .flags = IORESOURCE_MEM,
      },
};

struct v3020_platform_data cmx270_v3020_pdata = {
      .leftshift = 16,
};

static struct platform_device cmx270_rtc_device = {
      .name       = "v3020",
      .num_resources    = ARRAY_SIZE(cmx270_v3020_resource),
      .resource   = cmx270_v3020_resource,
      .id         = -1,
      .dev        = {
            .platform_data = &cmx270_v3020_pdata,
      }
};

static void __init cmx270_init_rtc(void)
{
      platform_device_register(&cmx270_rtc_device);
}
#else
static inline void cmx270_init_rtc(void) {}
#endif

/* CM-X270 LEDs */
#if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
static struct gpio_led cmx270_leds[] = {
      [0] = {
            .name = "cm-x270:red",
            .default_trigger = "nand-disk",
            .gpio = 93,
            .active_low = 1,
      },
      [1] = {
            .name = "cm-x270:green",
            .default_trigger = "heartbeat",
            .gpio = 94,
            .active_low = 1,
      },
};

static struct gpio_led_platform_data cmx270_gpio_led_pdata = {
      .num_leds = ARRAY_SIZE(cmx270_leds),
      .leds = cmx270_leds,
};

static struct platform_device cmx270_led_device = {
      .name       = "leds-gpio",
      .id         = -1,
      .dev        = {
            .platform_data = &cmx270_gpio_led_pdata,
      },
};

static void __init cmx270_init_leds(void)
{
      platform_device_register(&cmx270_led_device);
}
#else
static inline void cmx270_init_leds(void) {}
#endif

/* 2700G graphics */
#if defined(CONFIG_FB_MBX) || defined(CONFIG_FB_MBX_MODULE)
static u64 fb_dma_mask = ~(u64)0;

static struct resource cmx270_2700G_resource[] = {
      /* frame buffer memory including ODFB and External SDRAM */
      [0] = {
            .start = PXA_CS2_PHYS,
            .end   = PXA_CS2_PHYS + 0x01ffffff,
            .flags = IORESOURCE_MEM,
      },
      /* Marathon registers */
      [1] = {
            .start = PXA_CS2_PHYS + 0x03fe0000,
            .end   = PXA_CS2_PHYS + 0x03ffffff,
            .flags = IORESOURCE_MEM,
      },
};

static unsigned long save_lcd_regs[10];

static int cmx270_marathon_probe(struct fb_info *fb)
{
      /* save PXA-270 pin settings before enabling 2700G */
      save_lcd_regs[0] = GPDR1;
      save_lcd_regs[1] = GPDR2;
      save_lcd_regs[2] = GAFR1_U;
      save_lcd_regs[3] = GAFR2_L;
      save_lcd_regs[4] = GAFR2_U;

      /* Disable PXA-270 on-chip controller driving pins */
      GPDR1 &= ~(0xfc000000);
      GPDR2 &= ~(0x00c03fff);
      GAFR1_U &= ~(0xfff00000);
      GAFR2_L &= ~(0x0fffffff);
      GAFR2_U &= ~(0x0000f000);
      return 0;
}

static int cmx270_marathon_remove(struct fb_info *fb)
{
      GPDR1 =   save_lcd_regs[0];
      GPDR2 =   save_lcd_regs[1];
      GAFR1_U = save_lcd_regs[2];
      GAFR2_L = save_lcd_regs[3];
      GAFR2_U = save_lcd_regs[4];
      return 0;
}

static struct mbxfb_platform_data cmx270_2700G_data = {
      .xres = {
            .min = 240,
            .max = 1200,
            .defval = 640,
      },
      .yres = {
            .min = 240,
            .max = 1200,
            .defval = 480,
      },
      .bpp = {
            .min = 16,
            .max = 32,
            .defval = 16,
      },
      .memsize = 8*1024*1024,
      .probe = cmx270_marathon_probe,
      .remove = cmx270_marathon_remove,
};

static struct platform_device cmx270_2700G = {
      .name       = "mbx-fb",
      .dev        = {
            .platform_data    = &cmx270_2700G_data,
            .dma_mask   = &fb_dma_mask,
            .coherent_dma_mask = 0xffffffff,
      },
      .num_resources    = ARRAY_SIZE(cmx270_2700G_resource),
      .resource   = cmx270_2700G_resource,
      .id         = -1,
};

static void __init cmx270_init_2700G(void)
{
      platform_device_register(&cmx270_2700G);
}
#else
static inline void cmx270_init_2700G(void) {}
#endif

#if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
/*
  Display definitions
  keep these for backwards compatibility, although symbolic names (as
  e.g. in lpd270.c) looks better
*/
#define MTYPE_STN320x240      0
#define MTYPE_TFT640x480      1
#define MTYPE_CRT640x480      2
#define MTYPE_CRT800x600      3
#define MTYPE_TFT320x240      6
#define MTYPE_STN640x480      7

static struct pxafb_mode_info generic_stn_320x240_mode = {
      .pixclock   = 76923,
      .bpp        = 8,
      .xres       = 320,
      .yres       = 240,
      .hsync_len  = 3,
      .vsync_len  = 2,
      .left_margin      = 3,
      .upper_margin     = 0,
      .right_margin     = 3,
      .lower_margin     = 0,
      .sync       = (FB_SYNC_HOR_HIGH_ACT |
                     FB_SYNC_VERT_HIGH_ACT),
      .cmap_greyscale = 0,
};

static struct pxafb_mach_info generic_stn_320x240 = {
      .modes            = &generic_stn_320x240_mode,
      .num_modes  = 1,
      .lccr0            = 0,
      .lccr3            = (LCCR3_PixClkDiv(0x03) |
                     LCCR3_Acb(0xff) |
                     LCCR3_PCP),
      .cmap_inverse     = 0,
      .cmap_static      = 0,
};

static struct pxafb_mode_info generic_tft_640x480_mode = {
      .pixclock   = 38461,
      .bpp        = 8,
      .xres       = 640,
      .yres       = 480,
      .hsync_len  = 60,
      .vsync_len  = 2,
      .left_margin      = 70,
      .upper_margin     = 10,
      .right_margin     = 70,
      .lower_margin     = 5,
      .sync       = 0,
      .cmap_greyscale = 0,
};

static struct pxafb_mach_info generic_tft_640x480 = {
      .modes            = &generic_tft_640x480_mode,
      .num_modes  = 1,
      .lccr0            = (LCCR0_PAS),
      .lccr3            = (LCCR3_PixClkDiv(0x01) |
                     LCCR3_Acb(0xff) |
                     LCCR3_PCP),
      .cmap_inverse     = 0,
      .cmap_static      = 0,
};

static struct pxafb_mode_info generic_crt_640x480_mode = {
      .pixclock   = 38461,
      .bpp        = 8,
      .xres       = 640,
      .yres       = 480,
      .hsync_len  = 63,
      .vsync_len  = 2,
      .left_margin      = 81,
      .upper_margin     = 33,
      .right_margin     = 16,
      .lower_margin     = 10,
      .sync       = (FB_SYNC_HOR_HIGH_ACT |
                     FB_SYNC_VERT_HIGH_ACT),
      .cmap_greyscale = 0,
};

static struct pxafb_mach_info generic_crt_640x480 = {
      .modes            = &generic_crt_640x480_mode,
      .num_modes  = 1,
      .lccr0            = (LCCR0_PAS),
      .lccr3            = (LCCR3_PixClkDiv(0x01) |
                     LCCR3_Acb(0xff)),
      .cmap_inverse     = 0,
      .cmap_static      = 0,
};

static struct pxafb_mode_info generic_crt_800x600_mode = {
      .pixclock   = 28846,
      .bpp        = 8,
      .xres       = 800,
      .yres       = 600,
      .hsync_len  = 63,
      .vsync_len  = 2,
      .left_margin      = 26,
      .upper_margin     = 21,
      .right_margin     = 26,
      .lower_margin     = 11,
      .sync       = (FB_SYNC_HOR_HIGH_ACT |
                     FB_SYNC_VERT_HIGH_ACT),
      .cmap_greyscale = 0,
};

static struct pxafb_mach_info generic_crt_800x600 = {
      .modes            = &generic_crt_800x600_mode,
      .num_modes  = 1,
      .lccr0            = (LCCR0_PAS),
      .lccr3            = (LCCR3_PixClkDiv(0x02) |
                     LCCR3_Acb(0xff)),
      .cmap_inverse     = 0,
      .cmap_static      = 0,
};

static struct pxafb_mode_info generic_tft_320x240_mode = {
      .pixclock   = 134615,
      .bpp        = 16,
      .xres       = 320,
      .yres       = 240,
      .hsync_len  = 63,
      .vsync_len  = 7,
      .left_margin      = 75,
      .upper_margin     = 0,
      .right_margin     = 15,
      .lower_margin     = 15,
      .sync       = 0,
      .cmap_greyscale = 0,
};

static struct pxafb_mach_info generic_tft_320x240 = {
      .modes            = &generic_tft_320x240_mode,
      .num_modes  = 1,
      .lccr0            = (LCCR0_PAS),
      .lccr3            = (LCCR3_PixClkDiv(0x06) |
                     LCCR3_Acb(0xff) |
                     LCCR3_PCP),
      .cmap_inverse     = 0,
      .cmap_static      = 0,
};

static struct pxafb_mode_info generic_stn_640x480_mode = {
      .pixclock   = 57692,
      .bpp        = 8,
      .xres       = 640,
      .yres       = 480,
      .hsync_len  = 4,
      .vsync_len  = 2,
      .left_margin      = 10,
      .upper_margin     = 5,
      .right_margin     = 10,
      .lower_margin     = 5,
      .sync       = (FB_SYNC_HOR_HIGH_ACT |
                     FB_SYNC_VERT_HIGH_ACT),
      .cmap_greyscale = 0,
};

static struct pxafb_mach_info generic_stn_640x480 = {
      .modes            = &generic_stn_640x480_mode,
      .num_modes  = 1,
      .lccr0            = 0,
      .lccr3            = (LCCR3_PixClkDiv(0x02) |
                     LCCR3_Acb(0xff)),
      .cmap_inverse     = 0,
      .cmap_static      = 0,
};

static struct pxafb_mach_info *cmx270_display = &generic_crt_640x480;

static int __init cmx270_set_display(char *str)
{
      int disp_type = simple_strtol(str, NULL, 0);
      switch (disp_type) {
      case MTYPE_STN320x240:
            cmx270_display = &generic_stn_320x240;
            break;
      case MTYPE_TFT640x480:
            cmx270_display = &generic_tft_640x480;
            break;
      case MTYPE_CRT640x480:
            cmx270_display = &generic_crt_640x480;
            break;
      case MTYPE_CRT800x600:
            cmx270_display = &generic_crt_800x600;
            break;
      case MTYPE_TFT320x240:
            cmx270_display = &generic_tft_320x240;
            break;
      case MTYPE_STN640x480:
            cmx270_display = &generic_stn_640x480;
            break;
      default: /* fallback to CRT 640x480 */
            cmx270_display = &generic_crt_640x480;
            break;
      }
      return 1;
}

/*
   This should be done really early to get proper configuration for
   frame buffer.
   Indeed, pxafb parameters can be used istead, but CM-X270 bootloader
   has limitied line length for kernel command line, and also it will
   break compatibitlty with proprietary releases already in field.
*/
__setup("monitor=", cmx270_set_display);

static void __init cmx270_init_display(void)
{
      set_pxa_fb_info(cmx270_display);
}
#else
static inline void cmx270_init_display(void) {}
#endif

/* PXA27x OHCI controller setup */
#if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
static int cmx270_ohci_init(struct device *dev)
{
      /* Set the Power Control Polarity Low */
      UHCHR = (UHCHR | UHCHR_PCPL) &
            ~(UHCHR_SSEP1 | UHCHR_SSEP2 | UHCHR_SSE);

      return 0;
}

static struct pxaohci_platform_data cmx270_ohci_platform_data = {
      .port_mode  = PMM_PERPORT_MODE,
      .init       = cmx270_ohci_init,
};

static void __init cmx270_init_ohci(void)
{
      pxa_set_ohci_info(&cmx270_ohci_platform_data);
}
#else
static inline void cmx270_init_ohci(void) {}
#endif

#if defined(CONFIG_MMC) || defined(CONFIG_MMC_MODULE)
static int cmx270_mci_init(struct device *dev,
                     irq_handler_t cmx270_detect_int,
                     void *data)
{
      int err;

      err = gpio_request(GPIO105_MMC_POWER, "MMC/SD power");
      if (err) {
            dev_warn(dev, "power gpio unavailable\n");
            return err;
      }

      gpio_direction_output(GPIO105_MMC_POWER, 0);

      err = request_irq(CMX270_MMC_IRQ, cmx270_detect_int,
                    IRQF_DISABLED | IRQF_TRIGGER_FALLING,
                    "MMC card detect", data);
      if (err) {
            gpio_free(GPIO105_MMC_POWER);
            dev_err(dev, "cmx270_mci_init: MMC/SD: can't"
                  " request MMC card detect IRQ\n");
      }

      return err;
}

static void cmx270_mci_setpower(struct device *dev, unsigned int vdd)
{
      struct pxamci_platform_data *p_d = dev->platform_data;

      if ((1 << vdd) & p_d->ocr_mask) {
            dev_dbg(dev, "power on\n");
            gpio_set_value(GPIO105_MMC_POWER, 0);
      } else {
            gpio_set_value(GPIO105_MMC_POWER, 1);
            dev_dbg(dev, "power off\n");
      }
}

static void cmx270_mci_exit(struct device *dev, void *data)
{
      free_irq(CMX270_MMC_IRQ, data);
      gpio_free(GPIO105_MMC_POWER);
}

static struct pxamci_platform_data cmx270_mci_platform_data = {
      .ocr_mask   = MMC_VDD_32_33|MMC_VDD_33_34,
      .init             = cmx270_mci_init,
      .setpower   = cmx270_mci_setpower,
      .exit       = cmx270_mci_exit,
};

static void __init cmx270_init_mmc(void)
{
      pxa_set_mci_info(&cmx270_mci_platform_data);
}
#else
static inline void cmx270_init_mmc(void) {}
#endif

#ifdef CONFIG_PM
static unsigned long sleep_save_msc[10];

static int cmx270_suspend(struct sys_device *dev, pm_message_t state)
{
      cmx270_pci_suspend();

      /* save MSC registers */
      sleep_save_msc[0] = MSC0;
      sleep_save_msc[1] = MSC1;
      sleep_save_msc[2] = MSC2;

      /* setup power saving mode registers */
      PCFR = 0x0;
      PSLR = 0xff400000;
      PMCR  = 0x00000005;
      PWER  = 0x80000000;
      PFER  = 0x00000000;
      PRER  = 0x00000000;
      PGSR0 = 0xC0018800;
      PGSR1 = 0x004F0002;
      PGSR2 = 0x6021C000;
      PGSR3 = 0x00020000;

      return 0;
}

static int cmx270_resume(struct sys_device *dev)
{
      cmx270_pci_resume();

      /* restore MSC registers */
      MSC0 = sleep_save_msc[0];
      MSC1 = sleep_save_msc[1];
      MSC2 = sleep_save_msc[2];

      return 0;
}

static struct sysdev_class cmx270_pm_sysclass = {
      .name = "pm",
      .resume = cmx270_resume,
      .suspend = cmx270_suspend,
};

static struct sys_device cmx270_pm_device = {
      .cls = &cmx270_pm_sysclass,
};

static int __init cmx270_pm_init(void)
{
      int error;
      error = sysdev_class_register(&cmx270_pm_sysclass);
      if (error == 0)
            error = sysdev_register(&cmx270_pm_device);
      return error;
}
#else
static int __init cmx270_pm_init(void) { return 0; }
#endif

#if defined(CONFIG_SND_PXA2XX_AC97) || defined(CONFIG_SND_PXA2XX_AC97_MODULE)
static void __init cmx270_init_ac97(void)
{
      pxa_set_ac97_info(NULL);
}
#else
static inline void cmx270_init_ac97(void) {}
#endif

static void __init cmx270_init(void)
{
      cmx270_pm_init();

      pxa2xx_mfp_config(ARRAY_AND_SIZE(cmx270_pin_config));

      cmx270_init_dm9000();
      cmx270_init_rtc();
      cmx270_init_display();
      cmx270_init_mmc();
      cmx270_init_ohci();
      cmx270_init_ac97();
      cmx270_init_touchscreen();
      cmx270_init_leds();
      cmx270_init_2700G();
}

static void __init cmx270_init_irq(void)
{
      pxa27x_init_irq();

      cmx270_pci_init_irq(GPIO22_IT8152_IRQ);
}

#ifdef CONFIG_PCI
/* Map PCI companion statically */
static struct map_desc cmx270_io_desc[] __initdata = {
      [0] = { /* PCI bridge */
            .virtual    = CMX270_IT8152_VIRT,
            .pfn        = __phys_to_pfn(PXA_CS4_PHYS),
            .length           = SZ_64M,
            .type       = MT_DEVICE
      },
};

static void __init cmx270_map_io(void)
{
      pxa_map_io();
      iotable_init(cmx270_io_desc, ARRAY_SIZE(cmx270_io_desc));

      it8152_base_address = CMX270_IT8152_VIRT;
}
#else
static void __init cmx270_map_io(void)
{
      pxa_map_io();
}
#endif

MACHINE_START(ARMCORE, "Compulab CM-x270")
      .boot_params      = 0xa0000100,
      .phys_io    = 0x40000000,
      .io_pg_offst      = (io_p2v(0x40000000) >> 18) & 0xfffc,
      .map_io           = cmx270_map_io,
      .init_irq   = cmx270_init_irq,
      .timer            = &pxa_timer,
      .init_machine     = cmx270_init,
MACHINE_END

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