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mach-real6410.c

/* linux/arch/arm/mach-s3c64xx/mach-real6410.c
 *
 * Copyright 2010 Darius Augulis <augulis.darius@gmail.com>
 * Copyright 2008 Openmoko, Inc.
 * Copyright 2008 Simtec Electronics
 *    Ben Dooks <ben@simtec.co.uk>
 *    http://armlinux.simtec.co.uk/
 *
 * 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/interrupt.h>
#include <linux/fb.h>
#include <linux/gpio.h>
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/dm9000.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/platform_device.h>
#include <linux/serial_core.h>
#include <linux/types.h>

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

#include <mach/map.h>
#include <mach/regs-fb.h>
#include <mach/regs-gpio.h>
#include <mach/regs-modem.h>
#include <mach/regs-srom.h>
#include <mach/s3c6410.h>

#include <plat/adc.h>
#include <plat/cpu.h>
#include <plat/devs.h>
#include <plat/fb.h>
#include <plat/nand.h>
#include <plat/regs-serial.h>
#include <plat/ts.h>

#include <video/platform_lcd.h>

#define UCON S3C2410_UCON_DEFAULT
#define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB)
#define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)

static struct s3c2410_uartcfg real6410_uartcfgs[] __initdata = {
      [0] = {
            .hwport     = 0,
            .flags      = 0,
            .ucon = UCON,
            .ulcon      = ULCON,
            .ufcon      = UFCON,
      },
      [1] = {
            .hwport     = 1,
            .flags      = 0,
            .ucon = UCON,
            .ulcon      = ULCON,
            .ufcon      = UFCON,
      },
      [2] = {
            .hwport     = 2,
            .flags      = 0,
            .ucon = UCON,
            .ulcon      = ULCON,
            .ufcon      = UFCON,
      },
      [3] = {
            .hwport     = 3,
            .flags      = 0,
            .ucon = UCON,
            .ulcon      = ULCON,
            .ufcon      = UFCON,
      },
};

/* DM9000AEP 10/100 ethernet controller */

static struct resource real6410_dm9k_resource[] = {
      [0] = {
            .start      = S3C64XX_PA_XM0CSN1,
            .end  = S3C64XX_PA_XM0CSN1 + 1,
            .flags      = IORESOURCE_MEM
      },
      [1] = {
            .start      = S3C64XX_PA_XM0CSN1 + 4,
            .end  = S3C64XX_PA_XM0CSN1 + 5,
            .flags      = IORESOURCE_MEM
      },
      [2] = {
            .start      = S3C_EINT(7),
            .end  = S3C_EINT(7),
            .flags      = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL
      }
};

static struct dm9000_plat_data real6410_dm9k_pdata = {
      .flags            = (DM9000_PLATF_16BITONLY | DM9000_PLATF_NO_EEPROM),
};

static struct platform_device real6410_device_eth = {
      .name       = "dm9000",
      .id         = -1,
      .num_resources    = ARRAY_SIZE(real6410_dm9k_resource),
      .resource   = real6410_dm9k_resource,
      .dev        = {
            .platform_data    = &real6410_dm9k_pdata,
      },
};

static struct s3c_fb_pd_win real6410_fb_win[] = {
      {
            .win_mode   = {   /* 4.3" 480x272 */
                  .left_margin      = 3,
                  .right_margin     = 2,
                  .upper_margin     = 1,
                  .lower_margin     = 1,
                  .hsync_len  = 40,
                  .vsync_len  = 1,
                  .xres       = 480,
                  .yres       = 272,
            },
            .max_bpp    = 32,
            .default_bpp      = 16,
      }, {
            .win_mode   = {   /* 7.0" 800x480 */
                  .left_margin      = 8,
                  .right_margin     = 13,
                  .upper_margin     = 7,
                  .lower_margin     = 5,
                  .hsync_len  = 3,
                  .vsync_len  = 1,
                  .xres       = 800,
                  .yres       = 480,
            },
            .max_bpp    = 32,
            .default_bpp      = 16,
      },
};

static struct s3c_fb_platdata real6410_lcd_pdata __initdata = {
      .setup_gpio = s3c64xx_fb_gpio_setup_24bpp,
      .win[0]           = &real6410_fb_win[0],
      .vidcon0    = VIDCON0_VIDOUT_RGB | VIDCON0_PNRMODE_RGB,
      .vidcon1    = VIDCON1_INV_HSYNC | VIDCON1_INV_VSYNC,
};

static struct mtd_partition real6410_nand_part[] = {
      [0] = {
            .name = "uboot",
            .size = SZ_1M,
            .offset     = 0,
      },
      [1] = {
            .name = "kernel",
            .size = SZ_2M,
            .offset     = SZ_1M,
      },
      [2] = {
            .name = "rootfs",
            .size = MTDPART_SIZ_FULL,
            .offset     = SZ_1M + SZ_2M,
      },
};

static struct s3c2410_nand_set real6410_nand_sets[] = {
      [0] = {
            .name       = "nand",
            .nr_chips   = 1,
            .nr_partitions    = ARRAY_SIZE(real6410_nand_part),
            .partitions = real6410_nand_part,
      },
};

static struct s3c2410_platform_nand real6410_nand_info = {
      .tacls            = 25,
      .twrph0           = 55,
      .twrph1           = 40,
      .nr_sets    = ARRAY_SIZE(real6410_nand_sets),
      .sets       = real6410_nand_sets,
};

static struct platform_device *real6410_devices[] __initdata = {
      &real6410_device_eth,
      &s3c_device_hsmmc0,
      &s3c_device_hsmmc1,
      &s3c_device_fb,
      &s3c_device_nand,
      &s3c_device_adc,
      &s3c_device_ts,
      &s3c_device_ohci,
};

static struct s3c2410_ts_mach_info s3c_ts_platform __initdata = {
      .delay                  = 10000,
      .presc                  = 49,
      .oversampling_shift     = 2,
};

static void __init real6410_map_io(void)
{
      u32 tmp;

      s3c64xx_init_io(NULL, 0);
      s3c24xx_init_clocks(12000000);
      s3c24xx_init_uarts(real6410_uartcfgs, ARRAY_SIZE(real6410_uartcfgs));

      /* set the LCD type */
      tmp = __raw_readl(S3C64XX_SPCON);
      tmp &= ~S3C64XX_SPCON_LCD_SEL_MASK;
      tmp |= S3C64XX_SPCON_LCD_SEL_RGB;
      __raw_writel(tmp, S3C64XX_SPCON);

      /* remove the LCD bypass */
      tmp = __raw_readl(S3C64XX_MODEM_MIFPCON);
      tmp &= ~MIFPCON_LCD_BYPASS;
      __raw_writel(tmp, S3C64XX_MODEM_MIFPCON);
}

/*
 * real6410_features string
 *
 * 0-9 LCD configuration
 *
 */
static char real6410_features_str[12] __initdata = "0";

static int __init real6410_features_setup(char *str)
{
      if (str)
            strlcpy(real6410_features_str, str,
                  sizeof(real6410_features_str));
      return 1;
}

__setup("real6410=", real6410_features_setup);

#define FEATURE_SCREEN (1 << 0)

00247 struct real6410_features_t {
      int done;
      int lcd_index;
};

static void real6410_parse_features(
            struct real6410_features_t *features,
            const char *features_str)
{
      const char *fp = features_str;

      features->done = 0;
      features->lcd_index = 0;

      while (*fp) {
            char f = *fp++;

            switch (f) {
            case '0'...'9':   /* tft screen */
                  if (features->done & FEATURE_SCREEN) {
                        printk(KERN_INFO "REAL6410: '%c' ignored, "
                              "screen type already set\n", f);
                  } else {
                        int li = f - '0';
                        if (li >= ARRAY_SIZE(real6410_fb_win))
                              printk(KERN_INFO "REAL6410: '%c' out "
                                    "of range LCD mode\n", f);
                        else {
                              features->lcd_index = li;
                        }
                  }
                  features->done |= FEATURE_SCREEN;
                  break;
            }
      }
}

static void __init real6410_machine_init(void)
{
      u32 cs1;
      struct real6410_features_t features = { 0 };

      printk(KERN_INFO "REAL6410: Option string real6410=%s\n",
                  real6410_features_str);

      /* Parse the feature string */
      real6410_parse_features(&features, real6410_features_str);

      real6410_lcd_pdata.win[0] = &real6410_fb_win[features.lcd_index];

      printk(KERN_INFO "REAL6410: selected LCD display is %dx%d\n",
            real6410_lcd_pdata.win[0]->win_mode.xres,
            real6410_lcd_pdata.win[0]->win_mode.yres);

      s3c_fb_set_platdata(&real6410_lcd_pdata);
      s3c_nand_set_platdata(&real6410_nand_info);
      s3c24xx_ts_set_platdata(&s3c_ts_platform);

      /* configure nCS1 width to 16 bits */

      cs1 = __raw_readl(S3C64XX_SROM_BW) &
            ~(S3C64XX_SROM_BW__CS_MASK << S3C64XX_SROM_BW__NCS1__SHIFT);
      cs1 |= ((1 << S3C64XX_SROM_BW__DATAWIDTH__SHIFT) |
            (1 << S3C64XX_SROM_BW__WAITENABLE__SHIFT) |
            (1 << S3C64XX_SROM_BW__BYTEENABLE__SHIFT)) <<
                  S3C64XX_SROM_BW__NCS1__SHIFT;
      __raw_writel(cs1, S3C64XX_SROM_BW);

      /* set timing for nCS1 suitable for ethernet chip */

      __raw_writel((0 << S3C64XX_SROM_BCX__PMC__SHIFT) |
            (6 << S3C64XX_SROM_BCX__TACP__SHIFT) |
            (4 << S3C64XX_SROM_BCX__TCAH__SHIFT) |
            (1 << S3C64XX_SROM_BCX__TCOH__SHIFT) |
            (13 << S3C64XX_SROM_BCX__TACC__SHIFT) |
            (4 << S3C64XX_SROM_BCX__TCOS__SHIFT) |
            (0 << S3C64XX_SROM_BCX__TACS__SHIFT), S3C64XX_SROM_BC1);

      gpio_request(S3C64XX_GPF(15), "LCD power");

      platform_add_devices(real6410_devices, ARRAY_SIZE(real6410_devices));
}

MACHINE_START(REAL6410, "REAL6410")
      /* Maintainer: Darius Augulis <augulis.darius@gmail.com> */
      .boot_params      = S3C64XX_PA_SDRAM + 0x100,

      .init_irq   = s3c6410_init_irq,
      .map_io           = real6410_map_io,
      .init_machine     = real6410_machine_init,
      .timer            = &s3c24xx_timer,
MACHINE_END

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