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cm-x2xx.c

/*
 * linux/arch/arm/mach-pxa/cm-x2xx.c
 *
 * Copyright (C) 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/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 <asm/hardware/it8152.h>

#include "generic.h"
#include "cm-x2xx-pci.h"

extern void cmx255_init(void);
extern void cmx270_init(void);

/* virtual addresses for statically mapped regions */
#define CMX2XX_VIRT_BASE      (0xe8000000)
#define CMX2XX_IT8152_VIRT    (CMX2XX_VIRT_BASE)

/* physical address if local-bus attached devices */
#define CMX255_DM9000_PHYS_BASE (PXA_CS1_PHYS + (8 << 22))
#define CMX270_DM9000_PHYS_BASE     (PXA_CS1_PHYS + (6 << 22))

/* leds */
#define CMX255_GPIO_RED       (27)
#define CMX255_GPIO_GREEN     (32)
#define CMX270_GPIO_RED       (93)
#define CMX270_GPIO_GREEN     (94)

/* GPIO IRQ usage */
#define GPIO22_ETHIRQ         (22)
#define GPIO10_ETHIRQ         (10)
#define CMX255_GPIO_IT8152_IRQ      (0)
#define CMX270_GPIO_IT8152_IRQ      (22)

#define CMX255_ETHIRQ         IRQ_GPIO(GPIO22_ETHIRQ)
#define CMX270_ETHIRQ         IRQ_GPIO(GPIO10_ETHIRQ)

#if defined(CONFIG_DM9000) || defined(CONFIG_DM9000_MODULE)
static struct resource cmx255_dm9000_resource[] = {
      [0] = {
            .start = CMX255_DM9000_PHYS_BASE,
            .end   = CMX255_DM9000_PHYS_BASE + 3,
            .flags = IORESOURCE_MEM,
      },
      [1] = {
            .start = CMX255_DM9000_PHYS_BASE + 4,
            .end   = CMX255_DM9000_PHYS_BASE + 4 + 500,
            .flags = IORESOURCE_MEM,
      },
      [2] = {
            .start = CMX255_ETHIRQ,
            .end   = CMX255_ETHIRQ,
            .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
      }
};

static struct resource cmx270_dm9000_resource[] = {
      [0] = {
            .start = CMX270_DM9000_PHYS_BASE,
            .end   = CMX270_DM9000_PHYS_BASE + 3,
            .flags = IORESOURCE_MEM,
      },
      [1] = {
            .start = CMX270_DM9000_PHYS_BASE + 8,
            .end   = CMX270_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 cmx2xx_dm9000_device = {
      .name       = "dm9000",
      .id         = 0,
      .num_resources    = ARRAY_SIZE(cmx270_dm9000_resource),
      .dev        = {
            .platform_data = &cmx270_dm9000_platdata,
      }
};

static void __init cmx2xx_init_dm9000(void)
{
      if (cpu_is_pxa25x())
            cmx2xx_dm9000_device.resource = cmx255_dm9000_resource;
      else
            cmx2xx_dm9000_device.resource = cmx270_dm9000_resource;
      platform_device_register(&cmx2xx_dm9000_device);
}
#else
static inline void cmx2xx_init_dm9000(void) {}
#endif

/* UCB1400 touchscreen controller */
#if defined(CONFIG_TOUCHSCREEN_UCB1400) || defined(CONFIG_TOUCHSCREEN_UCB1400_MODULE)
static struct platform_device cmx2xx_ts_device = {
      .name       = "ucb1400_ts",
      .id         = -1,
};

static void __init cmx2xx_init_touchscreen(void)
{
      platform_device_register(&cmx2xx_ts_device);
}
#else
static inline void cmx2xx_init_touchscreen(void) {}
#endif

/* CM-X270 LEDs */
#if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
static struct gpio_led cmx2xx_leds[] = {
      [0] = {
            .name = "cm-x2xx:red",
            .default_trigger = "nand-disk",
            .active_low = 1,
      },
      [1] = {
            .name = "cm-x2xx:green",
            .default_trigger = "heartbeat",
            .active_low = 1,
      },
};

static struct gpio_led_platform_data cmx2xx_gpio_led_pdata = {
      .num_leds = ARRAY_SIZE(cmx2xx_leds),
      .leds = cmx2xx_leds,
};

static struct platform_device cmx2xx_led_device = {
      .name       = "leds-gpio",
      .id         = -1,
      .dev        = {
            .platform_data = &cmx2xx_gpio_led_pdata,
      },
};

static void __init cmx2xx_init_leds(void)
{
      if (cpu_is_pxa25x()) {
            cmx2xx_leds[0].gpio = CMX255_GPIO_RED;
            cmx2xx_leds[1].gpio = CMX255_GPIO_GREEN;
      } else {
            cmx2xx_leds[0].gpio = CMX270_GPIO_RED;
            cmx2xx_leds[1].gpio = CMX270_GPIO_GREEN;
      }
      platform_device_register(&cmx2xx_led_device);
}
#else
static inline void cmx2xx_init_leds(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 *cmx2xx_display = &generic_crt_640x480;

static int __init cmx2xx_set_display(char *str)
{
      int disp_type = simple_strtol(str, NULL, 0);
      switch (disp_type) {
      case MTYPE_STN320x240:
            cmx2xx_display = &generic_stn_320x240;
            break;
      case MTYPE_TFT640x480:
            cmx2xx_display = &generic_tft_640x480;
            break;
      case MTYPE_CRT640x480:
            cmx2xx_display = &generic_crt_640x480;
            break;
      case MTYPE_CRT800x600:
            cmx2xx_display = &generic_crt_800x600;
            break;
      case MTYPE_TFT320x240:
            cmx2xx_display = &generic_tft_320x240;
            break;
      case MTYPE_STN640x480:
            cmx2xx_display = &generic_stn_640x480;
            break;
      default: /* fallback to CRT 640x480 */
            cmx2xx_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-X2XX bootloader
   has limitied line length for kernel command line, and also it will
   break compatibitlty with proprietary releases already in field.
*/
__setup("monitor=", cmx2xx_set_display);

static void __init cmx2xx_init_display(void)
{
      set_pxa_fb_info(cmx2xx_display);
}
#else
static inline void cmx2xx_init_display(void) {}
#endif

#ifdef CONFIG_PM
static unsigned long sleep_save_msc[10];

static int cmx2xx_suspend(struct sys_device *dev, pm_message_t state)
{
      cmx2xx_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 cmx2xx_resume(struct sys_device *dev)
{
      cmx2xx_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 cmx2xx_pm_sysclass = {
      .name = "pm",
      .resume = cmx2xx_resume,
      .suspend = cmx2xx_suspend,
};

static struct sys_device cmx2xx_pm_device = {
      .cls = &cmx2xx_pm_sysclass,
};

static int __init cmx2xx_pm_init(void)
{
      int error;
      error = sysdev_class_register(&cmx2xx_pm_sysclass);
      if (error == 0)
            error = sysdev_register(&cmx2xx_pm_device);
      return error;
}
#else
static int __init cmx2xx_pm_init(void) { return 0; }
#endif

#if defined(CONFIG_SND_PXA2XX_AC97) || defined(CONFIG_SND_PXA2XX_AC97_MODULE)
static void __init cmx2xx_init_ac97(void)
{
      pxa_set_ac97_info(NULL);
}
#else
static inline void cmx2xx_init_ac97(void) {}
#endif

static void __init cmx2xx_init(void)
{
      cmx2xx_pm_init();

      if (cpu_is_pxa25x())
            cmx255_init();
      else
            cmx270_init();

      cmx2xx_init_dm9000();
      cmx2xx_init_display();
      cmx2xx_init_ac97();
      cmx2xx_init_touchscreen();
      cmx2xx_init_leds();
}

static void __init cmx2xx_init_irq(void)
{
      pxa27x_init_irq();

      if (cpu_is_pxa25x()) {
            pxa25x_init_irq();
            cmx2xx_pci_init_irq(CMX255_GPIO_IT8152_IRQ);
      } else {
            pxa27x_init_irq();
            cmx2xx_pci_init_irq(CMX270_GPIO_IT8152_IRQ);
      }
}

#ifdef CONFIG_PCI
/* Map PCI companion statically */
static struct map_desc cmx2xx_io_desc[] __initdata = {
      [0] = { /* PCI bridge */
            .virtual    = CMX2XX_IT8152_VIRT,
            .pfn        = __phys_to_pfn(PXA_CS4_PHYS),
            .length           = SZ_64M,
            .type       = MT_DEVICE
      },
};

static void __init cmx2xx_map_io(void)
{
      pxa_map_io();
      iotable_init(cmx2xx_io_desc, ARRAY_SIZE(cmx2xx_io_desc));

      it8152_base_address = CMX2XX_IT8152_VIRT;
}
#else
static void __init cmx2xx_map_io(void)
{
      pxa_map_io();
}
#endif

MACHINE_START(ARMCORE, "Compulab CM-X2XX")
      .boot_params      = 0xa0000100,
      .phys_io    = 0x40000000,
      .io_pg_offst      = (io_p2v(0x40000000) >> 18) & 0xfffc,
      .map_io           = cmx2xx_map_io,
      .init_irq   = cmx2xx_init_irq,
      .timer            = &pxa_timer,
      .init_machine     = cmx2xx_init,
MACHINE_END

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