arch/arm/mach-s3c64xx/mach-real6410.c

   1 /* linux/arch/arm/mach-s3c64xx/mach-real6410.c
   2  *
   3  * Copyright 2010 Darius Augulis <augulis.darius@gmail.com>
   4  * Copyright 2008 Openmoko, Inc.
   5  * Copyright 2008 Simtec Electronics
   6  *      Ben Dooks <ben@simtec.co.uk>
   7  *      http://armlinux.simtec.co.uk/
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12  *
  13 */
  14
  15 #include <linux/init.h>
  16 #include <linux/interrupt.h>
  17 #include <linux/fb.h>
  18 #include <linux/gpio.h>
  19 #include <linux/kernel.h>
  20 #include <linux/list.h>
  21 #include <linux/dm9000.h>
  22 #include <linux/mtd/mtd.h>
  23 #include <linux/mtd/partitions.h>
  24 #include <linux/platform_device.h>
  25 #include <linux/serial_core.h>
  26 #include <linux/types.h>
  27
  28 #include <asm/mach-types.h>
  29 #include <asm/mach/arch.h>
  30 #include <asm/mach/map.h>
  31
  32 #include <mach/map.h>
  33 #include <mach/regs-gpio.h>
  34 #include <mach/regs-modem.h>
  35 #include <mach/regs-srom.h>
  36 #include <mach/s3c6410.h>
  37
  38 #include <plat/adc.h>
  39 #include <plat/cpu.h>
  40 #include <plat/devs.h>
  41 #include <plat/fb.h>
  42 #include <plat/nand.h>
  43 #include <plat/regs-serial.h>
  44 #include <plat/ts.h>
  45 #include <plat/regs-fb-v4.h>
  46
  47 #include <video/platform_lcd.h>
  48
  49 #define UCON S3C2410_UCON_DEFAULT
  50 #define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB)
  51 #define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)
  52
  53 static struct s3c2410_uartcfg real6410_uartcfgs[] __initdata = {
  54         [0] = {
  55                 .hwport = 0,
  56                 .flags  = 0,
  57                 .ucon   = UCON,
  58                 .ulcon  = ULCON,
  59                 .ufcon  = UFCON,
  60         },
  61         [1] = {
  62                 .hwport = 1,
  63                 .flags  = 0,
  64                 .ucon   = UCON,
  65                 .ulcon  = ULCON,
  66                 .ufcon  = UFCON,
  67         },
  68         [2] = {
  69                 .hwport = 2,
  70                 .flags  = 0,
  71                 .ucon   = UCON,
  72                 .ulcon  = ULCON,
  73                 .ufcon  = UFCON,
  74         },
  75         [3] = {
  76                 .hwport = 3,
  77                 .flags  = 0,
  78                 .ucon   = UCON,
  79                 .ulcon  = ULCON,
  80                 .ufcon  = UFCON,
  81         },
  82 };
  83
  84 /* DM9000AEP 10/100 ethernet controller */
  85
  86 static struct resource real6410_dm9k_resource[] = {
  87         [0] = {
  88                 .start  = S3C64XX_PA_XM0CSN1,
  89                 .end    = S3C64XX_PA_XM0CSN1 + 1,
  90                 .flags  = IORESOURCE_MEM
  91         },
  92         [1] = {
  93                 .start  = S3C64XX_PA_XM0CSN1 + 4,
  94                 .end    = S3C64XX_PA_XM0CSN1 + 5,
  95                 .flags  = IORESOURCE_MEM
  96         },
  97         [2] = {
  98                 .start  = S3C_EINT(7),
  99                 .end    = S3C_EINT(7),
 100                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL
 101         }
 102 };
 103
 104 static struct dm9000_plat_data real6410_dm9k_pdata = {
 105         .flags          = (DM9000_PLATF_16BITONLY | DM9000_PLATF_NO_EEPROM),
 106 };
 107
 108 static struct platform_device real6410_device_eth = {
 109         .name           = "dm9000",
 110         .id             = -1,
 111         .num_resources  = ARRAY_SIZE(real6410_dm9k_resource),
 112         .resource       = real6410_dm9k_resource,
 113         .dev            = {
 114                 .platform_data  = &real6410_dm9k_pdata,
 115         },
 116 };
 117
 118 static struct s3c_fb_pd_win real6410_fb_win[] = {
 119         {
 120                 .win_mode       = {     /* 4.3" 480x272 */
 121                         .left_margin    = 3,
 122                         .right_margin   = 2,
 123                         .upper_margin   = 1,
 124                         .lower_margin   = 1,
 125                         .hsync_len      = 40,
 126                         .vsync_len      = 1,
 127                         .xres           = 480,
 128                         .yres           = 272,
 129                 },
 130                 .max_bpp        = 32,
 131                 .default_bpp    = 16,
 132         }, {
 133                 .win_mode       = {     /* 7.0" 800x480 */
 134                         .left_margin    = 8,
 135                         .right_margin   = 13,
 136                         .upper_margin   = 7,
 137                         .lower_margin   = 5,
 138                         .hsync_len      = 3,
 139                         .vsync_len      = 1,
 140                         .xres           = 800,
 141                         .yres           = 480,
 142                 },
 143                 .max_bpp        = 32,
 144                 .default_bpp    = 16,
 145         },
 146 };
 147
 148 static struct s3c_fb_platdata real6410_lcd_pdata __initdata = {
 149         .setup_gpio     = s3c64xx_fb_gpio_setup_24bpp,
 150         .win[0]         = &real6410_fb_win[0],
 151         .vidcon0        = VIDCON0_VIDOUT_RGB | VIDCON0_PNRMODE_RGB,
 152         .vidcon1        = VIDCON1_INV_HSYNC | VIDCON1_INV_VSYNC,
 153 };
 154
 155 static struct mtd_partition real6410_nand_part[] = {
 156         [0] = {
 157                 .name   = "uboot",
 158                 .size   = SZ_1M,
 159                 .offset = 0,
 160         },
 161         [1] = {
 162                 .name   = "kernel",
 163                 .size   = SZ_2M,
 164                 .offset = SZ_1M,
 165         },
 166         [2] = {
 167                 .name   = "rootfs",
 168                 .size   = MTDPART_SIZ_FULL,
 169                 .offset = SZ_1M + SZ_2M,
 170         },
 171 };
 172
 173 static struct s3c2410_nand_set real6410_nand_sets[] = {
 174         [0] = {
 175                 .name           = "nand",
 176                 .nr_chips       = 1,
 177                 .nr_partitions  = ARRAY_SIZE(real6410_nand_part),
 178                 .partitions     = real6410_nand_part,
 179         },
 180 };
 181
 182 static struct s3c2410_platform_nand real6410_nand_info = {
 183         .tacls          = 25,
 184         .twrph0         = 55,
 185         .twrph1         = 40,
 186         .nr_sets        = ARRAY_SIZE(real6410_nand_sets),
 187         .sets           = real6410_nand_sets,
 188 };
 189
 190 static struct platform_device *real6410_devices[] __initdata = {
 191         &real6410_device_eth,
 192         &s3c_device_hsmmc0,
 193         &s3c_device_hsmmc1,
 194         &s3c_device_fb,
 195         &s3c_device_nand,
 196         &s3c_device_adc,
 197         &s3c_device_ts,
 198         &s3c_device_ohci,
 199 };
 200
 201 static void __init real6410_map_io(void)
 202 {
 203         u32 tmp;
 204
 205         s3c64xx_init_io(NULL, 0);
 206         s3c24xx_init_clocks(12000000);
 207         s3c24xx_init_uarts(real6410_uartcfgs, ARRAY_SIZE(real6410_uartcfgs));
 208
 209         /* set the LCD type */
 210         tmp = __raw_readl(S3C64XX_SPCON);
 211         tmp &= ~S3C64XX_SPCON_LCD_SEL_MASK;
 212         tmp |= S3C64XX_SPCON_LCD_SEL_RGB;
 213         __raw_writel(tmp, S3C64XX_SPCON);
 214
 215         /* remove the LCD bypass */
 216         tmp = __raw_readl(S3C64XX_MODEM_MIFPCON);
 217         tmp &= ~MIFPCON_LCD_BYPASS;
 218         __raw_writel(tmp, S3C64XX_MODEM_MIFPCON);
 219 }
 220
 221 /*
 222  * real6410_features string
 223  *
 224  * 0-9 LCD configuration
 225  *
 226  */
 227 static char real6410_features_str[12] __initdata = "0";
 228
 229 static int __init real6410_features_setup(char *str)
 230 {
 231         if (str)
 232                 strlcpy(real6410_features_str, str,
 233                         sizeof(real6410_features_str));
 234         return 1;
 235 }
 236
 237 __setup("real6410=", real6410_features_setup);
 238
 239 #define FEATURE_SCREEN (1 << 0)
 240
 241 struct real6410_features_t {
 242         int done;
 243         int lcd_index;
 244 };
 245
 246 static void real6410_parse_features(
 247                 struct real6410_features_t *features,
 248                 const char *features_str)
 249 {
 250         const char *fp = features_str;
 251
 252         features->done = 0;
 253         features->lcd_index = 0;
 254
 255         while (*fp) {
 256                 char f = *fp++;
 257
 258                 switch (f) {
 259                 case '0'...'9': /* tft screen */
 260                         if (features->done & FEATURE_SCREEN) {
 261                                 printk(KERN_INFO "REAL6410: '%c' ignored, "
 262                                         "screen type already set\n", f);
 263                         } else {
 264                                 int li = f - '0';
 265                                 if (li >= ARRAY_SIZE(real6410_fb_win))
 266                                         printk(KERN_INFO "REAL6410: '%c' out "
 267                                                 "of range LCD mode\n", f);
 268                                 else {
 269                                         features->lcd_index = li;
 270                                 }
 271                         }
 272                         features->done |= FEATURE_SCREEN;
 273                         break;
 274                 }
 275         }
 276 }
 277
 278 static void __init real6410_machine_init(void)
 279 {
 280         u32 cs1;
 281         struct real6410_features_t features = { 0 };
 282
 283         printk(KERN_INFO "REAL6410: Option string real6410=%s\n",
 284                         real6410_features_str);
 285
 286         /* Parse the feature string */
 287         real6410_parse_features(&features, real6410_features_str);
 288
 289         real6410_lcd_pdata.win[0] = &real6410_fb_win[features.lcd_index];
 290
 291         printk(KERN_INFO "REAL6410: selected LCD display is %dx%d\n",
 292                 real6410_lcd_pdata.win[0]->win_mode.xres,
 293                 real6410_lcd_pdata.win[0]->win_mode.yres);
 294
 295         s3c_fb_set_platdata(&real6410_lcd_pdata);
 296         s3c_nand_set_platdata(&real6410_nand_info);
 297         s3c24xx_ts_set_platdata(NULL);
 298
 299         /* configure nCS1 width to 16 bits */
 300
 301         cs1 = __raw_readl(S3C64XX_SROM_BW) &
 302                 ~(S3C64XX_SROM_BW__CS_MASK << S3C64XX_SROM_BW__NCS1__SHIFT);
 303         cs1 |= ((1 << S3C64XX_SROM_BW__DATAWIDTH__SHIFT) |
 304                 (1 << S3C64XX_SROM_BW__WAITENABLE__SHIFT) |
 305                 (1 << S3C64XX_SROM_BW__BYTEENABLE__SHIFT)) <<
 306                         S3C64XX_SROM_BW__NCS1__SHIFT;
 307         __raw_writel(cs1, S3C64XX_SROM_BW);
 308
 309         /* set timing for nCS1 suitable for ethernet chip */
 310
 311         __raw_writel((0 << S3C64XX_SROM_BCX__PMC__SHIFT) |
 312                 (6 << S3C64XX_SROM_BCX__TACP__SHIFT) |
 313                 (4 << S3C64XX_SROM_BCX__TCAH__SHIFT) |
 314                 (1 << S3C64XX_SROM_BCX__TCOH__SHIFT) |
 315                 (13 << S3C64XX_SROM_BCX__TACC__SHIFT) |
 316                 (4 << S3C64XX_SROM_BCX__TCOS__SHIFT) |
 317                 (0 << S3C64XX_SROM_BCX__TACS__SHIFT), S3C64XX_SROM_BC1);
 318
 319         gpio_request(S3C64XX_GPF(15), "LCD power");
 320
 321         platform_add_devices(real6410_devices, ARRAY_SIZE(real6410_devices));
 322 }
 323
 324 MACHINE_START(REAL6410, "REAL6410")
 325         /* Maintainer: Darius Augulis <augulis.darius@gmail.com> */
 326         .boot_params    = S3C64XX_PA_SDRAM + 0x100,
 327
 328         .init_irq       = s3c6410_init_irq,
 329         .map_io         = real6410_map_io,
 330         .init_machine   = real6410_machine_init,
 331         .timer          = &s3c24xx_timer,
 332 MACHINE_END