arch/arm/mach-s3c2440/mach-mini2440.c

   1 /* linux/arch/arm/mach-s3c2440/mach-mini2440.c
   2  *
   3  * Copyright (c) 2008 Ramax Lo <ramaxlo@gmail.com>
   4  *      Based on mach-anubis.c by Ben Dooks <ben@simtec.co.uk>
   5  *      and modifications by SBZ <sbz@spgui.org> and
   6  *      Weibing <http://weibing.blogbus.com> and
   7  *      Michel Pollet <buserror@gmail.com>
   8  *
   9  * For product information, visit http://code.google.com/p/mini2440/
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License version 2 as
  13  * published by the Free Software Foundation.
  14 */
  15
  16 #include <linux/kernel.h>
  17 #include <linux/types.h>
  18 #include <linux/interrupt.h>
  19 #include <linux/list.h>
  20 #include <linux/timer.h>
  21 #include <linux/init.h>
  22 #include <linux/gpio.h>
  23 #include <linux/input.h>
  24 #include <linux/io.h>
  25 #include <linux/serial_core.h>
  26 #include <linux/dm9000.h>
  27 #include <linux/i2c/at24.h>
  28 #include <linux/platform_device.h>
  29 #include <linux/gpio_keys.h>
  30 #include <linux/i2c.h>
  31 #include <linux/mmc/host.h>
  32
  33 #include <asm/mach/arch.h>
  34 #include <asm/mach/map.h>
  35
  36 #include <mach/hardware.h>
  37 #include <mach/fb.h>
  38 #include <asm/mach-types.h>
  39
  40 #include <plat/regs-serial.h>
  41 #include <mach/regs-gpio.h>
  42 #include <mach/leds-gpio.h>
  43 #include <mach/regs-mem.h>
  44 #include <mach/regs-lcd.h>
  45 #include <mach/irqs.h>
  46 #include <plat/nand.h>
  47 #include <plat/iic.h>
  48 #include <plat/mci.h>
  49 #include <plat/udc.h>
  50
  51 #include <linux/mtd/mtd.h>
  52 #include <linux/mtd/nand.h>
  53 #include <linux/mtd/nand_ecc.h>
  54 #include <linux/mtd/partitions.h>
  55
  56 #include <plat/gpio-cfg.h>
  57 #include <plat/clock.h>
  58 #include <plat/devs.h>
  59 #include <plat/cpu.h>
  60
  61 #include <sound/s3c24xx_uda134x.h>
  62
  63 #define MACH_MINI2440_DM9K_BASE (S3C2410_CS4 + 0x300)
  64
  65 static struct map_desc mini2440_iodesc[] __initdata = {
  66         /* nothing to declare, move along */
  67 };
  68
  69 #define UCON S3C2410_UCON_DEFAULT
  70 #define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
  71 #define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE
  72
  73
  74 static struct s3c2410_uartcfg mini2440_uartcfgs[] __initdata = {
  75         [0] = {
  76                 .hwport      = 0,
  77                 .flags       = 0,
  78                 .ucon        = UCON,
  79                 .ulcon       = ULCON,
  80                 .ufcon       = UFCON,
  81         },
  82         [1] = {
  83                 .hwport      = 1,
  84                 .flags       = 0,
  85                 .ucon        = UCON,
  86                 .ulcon       = ULCON,
  87                 .ufcon       = UFCON,
  88         },
  89         [2] = {
  90                 .hwport      = 2,
  91                 .flags       = 0,
  92                 .ucon        = UCON,
  93                 .ulcon       = ULCON,
  94                 .ufcon       = UFCON,
  95         },
  96 };
  97
  98 /* USB device UDC support */
  99
 100 static struct s3c2410_udc_mach_info mini2440_udc_cfg __initdata = {
 101         .pullup_pin = S3C2410_GPC(5),
 102 };
 103
 104
 105 /* LCD timing and setup */
 106
 107 /*
 108  * This macro simplifies the table bellow
 109  */
 110 #define _LCD_DECLARE(_clock,_xres,margin_left,margin_right,hsync, \
 111                         _yres,margin_top,margin_bottom,vsync, refresh) \
 112         .width = _xres, \
 113         .xres = _xres, \
 114         .height = _yres, \
 115         .yres = _yres, \
 116         .left_margin    = margin_left,  \
 117         .right_margin   = margin_right, \
 118         .upper_margin   = margin_top,   \
 119         .lower_margin   = margin_bottom,        \
 120         .hsync_len      = hsync,        \
 121         .vsync_len      = vsync,        \
 122         .pixclock       = ((_clock*100000000000LL) /    \
 123                            ((refresh) * \
 124                            (hsync + margin_left + _xres + margin_right) * \
 125                            (vsync + margin_top + _yres + margin_bottom))), \
 126         .bpp            = 16,\
 127         .type           = (S3C2410_LCDCON1_TFT16BPP |\
 128                            S3C2410_LCDCON1_TFT)
 129
 130 static struct s3c2410fb_display mini2440_lcd_cfg[] __initdata = {
 131         [0] = { /* mini2440 + 3.5" TFT + touchscreen */
 132                 _LCD_DECLARE(
 133                         7,                      /* The 3.5 is quite fast */
 134                         240, 21, 38, 6,         /* x timing */
 135                         320, 4, 4, 2,           /* y timing */
 136                         60),                    /* refresh rate */
 137                 .lcdcon5        = (S3C2410_LCDCON5_FRM565 |
 138                                    S3C2410_LCDCON5_INVVLINE |
 139                                    S3C2410_LCDCON5_INVVFRAME |
 140                                    S3C2410_LCDCON5_INVVDEN |
 141                                    S3C2410_LCDCON5_PWREN),
 142         },
 143         [1] = { /* mini2440 + 7" TFT + touchscreen */
 144                 _LCD_DECLARE(
 145                         10,                     /* the 7" runs slower */
 146                         800, 40, 40, 48,        /* x timing */
 147                         480, 29, 3, 3,          /* y timing */
 148                         50),                    /* refresh rate */
 149                 .lcdcon5        = (S3C2410_LCDCON5_FRM565 |
 150                                    S3C2410_LCDCON5_INVVLINE |
 151                                    S3C2410_LCDCON5_INVVFRAME |
 152                                    S3C2410_LCDCON5_PWREN),
 153         },
 154         /* The VGA shield can outout at several resolutions. All share
 155          * the same timings, however, anything smaller than 1024x768
 156          * will only be displayed in the top left corner of a 1024x768
 157          * XGA output unless you add optional dip switches to the shield.
 158          * Therefore timings for other resolutions have been omitted here.
 159          */
 160         [2] = {
 161                 _LCD_DECLARE(
 162                         10,
 163                         1024, 1, 2, 2,          /* y timing */
 164                         768, 200, 16, 16,       /* x timing */
 165                         24),    /* refresh rate, maximum stable,
 166                                  tested with the FPGA shield */
 167                 .lcdcon5        = (S3C2410_LCDCON5_FRM565 |
 168                                    S3C2410_LCDCON5_HWSWP),
 169         },
 170 };
 171
 172 /* todo - put into gpio header */
 173
 174 #define S3C2410_GPCCON_MASK(x)  (3 << ((x) * 2))
 175 #define S3C2410_GPDCON_MASK(x)  (3 << ((x) * 2))
 176
 177 static struct s3c2410fb_mach_info mini2440_fb_info __initdata = {
 178         .displays        = &mini2440_lcd_cfg[0], /* not constant! see init */
 179         .num_displays    = 1,
 180         .default_display = 0,
 181
 182         /* Enable VD[2..7], VD[10..15], VD[18..23] and VCLK, syncs, VDEN
 183          * and disable the pull down resistors on pins we are using for LCD
 184          * data. */
 185
 186         .gpcup          = (0xf << 1) | (0x3f << 10),
 187
 188         .gpccon         = (S3C2410_GPC1_VCLK   | S3C2410_GPC2_VLINE |
 189                            S3C2410_GPC3_VFRAME | S3C2410_GPC4_VM |
 190                            S3C2410_GPC10_VD2   | S3C2410_GPC11_VD3 |
 191                            S3C2410_GPC12_VD4   | S3C2410_GPC13_VD5 |
 192                            S3C2410_GPC14_VD6   | S3C2410_GPC15_VD7),
 193
 194         .gpccon_mask    = (S3C2410_GPCCON_MASK(1)  | S3C2410_GPCCON_MASK(2)  |
 195                            S3C2410_GPCCON_MASK(3)  | S3C2410_GPCCON_MASK(4)  |
 196                            S3C2410_GPCCON_MASK(10) | S3C2410_GPCCON_MASK(11) |
 197                            S3C2410_GPCCON_MASK(12) | S3C2410_GPCCON_MASK(13) |
 198                            S3C2410_GPCCON_MASK(14) | S3C2410_GPCCON_MASK(15)),
 199
 200         .gpdup          = (0x3f << 2) | (0x3f << 10),
 201
 202         .gpdcon         = (S3C2410_GPD2_VD10  | S3C2410_GPD3_VD11 |
 203                            S3C2410_GPD4_VD12  | S3C2410_GPD5_VD13 |
 204                            S3C2410_GPD6_VD14  | S3C2410_GPD7_VD15 |
 205                            S3C2410_GPD10_VD18 | S3C2410_GPD11_VD19 |
 206                            S3C2410_GPD12_VD20 | S3C2410_GPD13_VD21 |
 207                            S3C2410_GPD14_VD22 | S3C2410_GPD15_VD23),
 208
 209         .gpdcon_mask    = (S3C2410_GPDCON_MASK(2)  | S3C2410_GPDCON_MASK(3) |
 210                            S3C2410_GPDCON_MASK(4)  | S3C2410_GPDCON_MASK(5) |
 211                            S3C2410_GPDCON_MASK(6)  | S3C2410_GPDCON_MASK(7) |
 212                            S3C2410_GPDCON_MASK(10) | S3C2410_GPDCON_MASK(11)|
 213                            S3C2410_GPDCON_MASK(12) | S3C2410_GPDCON_MASK(13)|
 214                            S3C2410_GPDCON_MASK(14) | S3C2410_GPDCON_MASK(15)),
 215 };
 216
 217 /* MMC/SD  */
 218
 219 static struct s3c24xx_mci_pdata mini2440_mmc_cfg __initdata = {
 220    .gpio_detect   = S3C2410_GPG(8),
 221    .gpio_wprotect = S3C2410_GPH(8),
 222    .set_power     = NULL,
 223    .ocr_avail     = MMC_VDD_32_33|MMC_VDD_33_34,
 224 };
 225
 226 /* NAND Flash on MINI2440 board */
 227
 228 static struct mtd_partition mini2440_default_nand_part[] __initdata = {
 229         [0] = {
 230                 .name   = "u-boot",
 231                 .size   = SZ_256K,
 232                 .offset = 0,
 233         },
 234         [1] = {
 235                 .name   = "u-boot-env",
 236                 .size   = SZ_128K,
 237                 .offset = SZ_256K,
 238         },
 239         [2] = {
 240                 .name   = "kernel",
 241                 /* 5 megabytes, for a kernel with no modules
 242                  * or a uImage with a ramdisk attached */
 243                 .size   = 0x00500000,
 244                 .offset = SZ_256K + SZ_128K,
 245         },
 246         [3] = {
 247                 .name   = "root",
 248                 .offset = SZ_256K + SZ_128K + 0x00500000,
 249                 .size   = MTDPART_SIZ_FULL,
 250         },
 251 };
 252
 253 static struct s3c2410_nand_set mini2440_nand_sets[] __initdata = {
 254         [0] = {
 255                 .name           = "nand",
 256                 .nr_chips       = 1,
 257                 .nr_partitions  = ARRAY_SIZE(mini2440_default_nand_part),
 258                 .partitions     = mini2440_default_nand_part,
 259                 .flash_bbt      = 1, /* we use u-boot to create a BBT */
 260         },
 261 };
 262
 263 static struct s3c2410_platform_nand mini2440_nand_info __initdata = {
 264         .tacls          = 0,
 265         .twrph0         = 25,
 266         .twrph1         = 15,
 267         .nr_sets        = ARRAY_SIZE(mini2440_nand_sets),
 268         .sets           = mini2440_nand_sets,
 269         .ignore_unset_ecc = 1,
 270 };
 271
 272 /* DM9000AEP 10/100 ethernet controller */
 273
 274 static struct resource mini2440_dm9k_resource[] = {
 275         [0] = {
 276                 .start = MACH_MINI2440_DM9K_BASE,
 277                 .end   = MACH_MINI2440_DM9K_BASE + 3,
 278                 .flags = IORESOURCE_MEM
 279         },
 280         [1] = {
 281                 .start = MACH_MINI2440_DM9K_BASE + 4,
 282                 .end   = MACH_MINI2440_DM9K_BASE + 7,
 283                 .flags = IORESOURCE_MEM
 284         },
 285         [2] = {
 286                 .start = IRQ_EINT7,
 287                 .end   = IRQ_EINT7,
 288                 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
 289         }
 290 };
 291
 292 /*
 293  * The DM9000 has no eeprom, and it's MAC address is set by
 294  * the bootloader before starting the kernel.
 295  */
 296 static struct dm9000_plat_data mini2440_dm9k_pdata = {
 297         .flags          = (DM9000_PLATF_16BITONLY | DM9000_PLATF_NO_EEPROM),
 298 };
 299
 300 static struct platform_device mini2440_device_eth = {
 301         .name           = "dm9000",
 302         .id             = -1,
 303         .num_resources  = ARRAY_SIZE(mini2440_dm9k_resource),
 304         .resource       = mini2440_dm9k_resource,
 305         .dev            = {
 306                 .platform_data  = &mini2440_dm9k_pdata,
 307         },
 308 };
 309
 310 /*  CON5
 311  *      +--+     /-----\
 312  *      |  |    |       |
 313  *      |  |    |  BAT  |
 314  *      |  |     \_____/
 315  *      |  |
 316  *      |  |  +----+  +----+
 317  *      |  |  | K5 |  | K1 |
 318  *      |  |  +----+  +----+
 319  *      |  |  +----+  +----+
 320  *      |  |  | K4 |  | K2 |
 321  *      |  |  +----+  +----+
 322  *      |  |  +----+  +----+
 323  *      |  |  | K6 |  | K3 |
 324  *      |  |  +----+  +----+
 325  *        .....
 326  */
 327 static struct gpio_keys_button mini2440_buttons[] = {
 328         {
 329                 .gpio           = S3C2410_GPG(0),               /* K1 */
 330                 .code           = KEY_F1,
 331                 .desc           = "Button 1",
 332                 .active_low     = 1,
 333         },
 334         {
 335                 .gpio           = S3C2410_GPG(3),               /* K2 */
 336                 .code           = KEY_F2,
 337                 .desc           = "Button 2",
 338                 .active_low     = 1,
 339         },
 340         {
 341                 .gpio           = S3C2410_GPG(5),               /* K3 */
 342                 .code           = KEY_F3,
 343                 .desc           = "Button 3",
 344                 .active_low     = 1,
 345         },
 346         {
 347                 .gpio           = S3C2410_GPG(6),               /* K4 */
 348                 .code           = KEY_POWER,
 349                 .desc           = "Power",
 350                 .active_low     = 1,
 351         },
 352         {
 353                 .gpio           = S3C2410_GPG(7),               /* K5 */
 354                 .code           = KEY_F5,
 355                 .desc           = "Button 5",
 356                 .active_low     = 1,
 357         },
 358 #if 0
 359         /* this pin is also known as TCLK1 and seems to already
 360          * marked as "in use" somehow in the kernel -- possibly wrongly */
 361         {
 362                 .gpio           = S3C2410_GPG(11),      /* K6 */
 363                 .code           = KEY_F6,
 364                 .desc           = "Button 6",
 365                 .active_low     = 1,
 366         },
 367 #endif
 368 };
 369
 370 static struct gpio_keys_platform_data mini2440_button_data = {
 371         .buttons        = mini2440_buttons,
 372         .nbuttons       = ARRAY_SIZE(mini2440_buttons),
 373 };
 374
 375 static struct platform_device mini2440_button_device = {
 376         .name           = "gpio-keys",
 377         .id             = -1,
 378         .dev            = {
 379                 .platform_data  = &mini2440_button_data,
 380         }
 381 };
 382
 383 /* LEDS */
 384
 385 static struct s3c24xx_led_platdata mini2440_led1_pdata = {
 386         .name           = "led1",
 387         .gpio           = S3C2410_GPB(5),
 388         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
 389         .def_trigger    = "heartbeat",
 390 };
 391
 392 static struct s3c24xx_led_platdata mini2440_led2_pdata = {
 393         .name           = "led2",
 394         .gpio           = S3C2410_GPB(6),
 395         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
 396         .def_trigger    = "nand-disk",
 397 };
 398
 399 static struct s3c24xx_led_platdata mini2440_led3_pdata = {
 400         .name           = "led3",
 401         .gpio           = S3C2410_GPB(7),
 402         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
 403         .def_trigger    = "mmc0",
 404 };
 405
 406 static struct s3c24xx_led_platdata mini2440_led4_pdata = {
 407         .name           = "led4",
 408         .gpio           = S3C2410_GPB(8),
 409         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
 410         .def_trigger    = "",
 411 };
 412
 413 static struct s3c24xx_led_platdata mini2440_led_backlight_pdata = {
 414         .name           = "backlight",
 415         .gpio           = S3C2410_GPG(4),
 416         .def_trigger    = "backlight",
 417 };
 418
 419 static struct platform_device mini2440_led1 = {
 420         .name           = "s3c24xx_led",
 421         .id             = 1,
 422         .dev            = {
 423                 .platform_data  = &mini2440_led1_pdata,
 424         },
 425 };
 426
 427 static struct platform_device mini2440_led2 = {
 428         .name           = "s3c24xx_led",
 429         .id             = 2,
 430         .dev            = {
 431                 .platform_data  = &mini2440_led2_pdata,
 432         },
 433 };
 434
 435 static struct platform_device mini2440_led3 = {
 436         .name           = "s3c24xx_led",
 437         .id             = 3,
 438         .dev            = {
 439                 .platform_data  = &mini2440_led3_pdata,
 440         },
 441 };
 442
 443 static struct platform_device mini2440_led4 = {
 444         .name           = "s3c24xx_led",
 445         .id             = 4,
 446         .dev            = {
 447                 .platform_data  = &mini2440_led4_pdata,
 448         },
 449 };
 450
 451 static struct platform_device mini2440_led_backlight = {
 452         .name           = "s3c24xx_led",
 453         .id             = 5,
 454         .dev            = {
 455                 .platform_data  = &mini2440_led_backlight_pdata,
 456         },
 457 };
 458
 459 /* AUDIO */
 460
 461 static struct s3c24xx_uda134x_platform_data mini2440_audio_pins = {
 462         .l3_clk = S3C2410_GPB(4),
 463         .l3_mode = S3C2410_GPB(2),
 464         .l3_data = S3C2410_GPB(3),
 465         .model = UDA134X_UDA1341
 466 };
 467
 468 static struct platform_device mini2440_audio = {
 469         .name           = "s3c24xx_uda134x",
 470         .id             = 0,
 471         .dev            = {
 472                 .platform_data  = &mini2440_audio_pins,
 473         },
 474 };
 475
 476 /*
 477  * I2C devices
 478  */
 479 static struct at24_platform_data at24c08 = {
 480         .byte_len       = SZ_8K / 8,
 481         .page_size      = 16,
 482 };
 483
 484 static struct i2c_board_info mini2440_i2c_devs[] __initdata = {
 485         {
 486                 I2C_BOARD_INFO("24c08", 0x50),
 487                 .platform_data = &at24c08,
 488         },
 489 };
 490
 491 static struct platform_device uda1340_codec = {
 492                 .name = "uda134x-codec",
 493                 .id = -1,
 494 };
 495
 496 static struct platform_device *mini2440_devices[] __initdata = {
 497         &s3c_device_ohci,
 498         &s3c_device_wdt,
 499         &s3c_device_i2c0,
 500         &s3c_device_rtc,
 501         &s3c_device_usbgadget,
 502         &mini2440_device_eth,
 503         &mini2440_led1,
 504         &mini2440_led2,
 505         &mini2440_led3,
 506         &mini2440_led4,
 507         &mini2440_button_device,
 508         &s3c_device_nand,
 509         &s3c_device_sdi,
 510         &s3c_device_iis,
 511         &uda1340_codec,
 512         &mini2440_audio,
 513         &samsung_asoc_dma,
 514 };
 515
 516 static void __init mini2440_map_io(void)
 517 {
 518         s3c24xx_init_io(mini2440_iodesc, ARRAY_SIZE(mini2440_iodesc));
 519         s3c24xx_init_clocks(12000000);
 520         s3c24xx_init_uarts(mini2440_uartcfgs, ARRAY_SIZE(mini2440_uartcfgs));
 521 }
 522
 523 /*
 524  * mini2440_features string
 525  *
 526  * t = Touchscreen present
 527  * b = backlight control
 528  * c = camera [TODO]
 529  * 0-9 LCD configuration
 530  *
 531  */
 532 static char mini2440_features_str[12] __initdata = "0tb";
 533
 534 static int __init mini2440_features_setup(char *str)
 535 {
 536         if (str)
 537                 strlcpy(mini2440_features_str, str, sizeof(mini2440_features_str));
 538         return 1;
 539 }
 540
 541 __setup("mini2440=", mini2440_features_setup);
 542
 543 #define FEATURE_SCREEN (1 << 0)
 544 #define FEATURE_BACKLIGHT (1 << 1)
 545 #define FEATURE_TOUCH (1 << 2)
 546 #define FEATURE_CAMERA (1 << 3)
 547
 548 struct mini2440_features_t {
 549         int count;
 550         int done;
 551         int lcd_index;
 552         struct platform_device *optional[8];
 553 };
 554
 555 static void __init mini2440_parse_features(
 556                 struct mini2440_features_t * features,
 557                 const char * features_str )
 558 {
 559         const char * fp = features_str;
 560
 561         features->count = 0;
 562         features->done = 0;
 563         features->lcd_index = -1;
 564
 565         while (*fp) {
 566                 char f = *fp++;
 567
 568                 switch (f) {
 569                 case '0'...'9': /* tft screen */
 570                         if (features->done & FEATURE_SCREEN) {
 571                                 printk(KERN_INFO "MINI2440: '%c' ignored, "
 572                                         "screen type already set\n", f);
 573                         } else {
 574                                 int li = f - '0';
 575                                 if (li >= ARRAY_SIZE(mini2440_lcd_cfg))
 576                                         printk(KERN_INFO "MINI2440: "
 577                                                 "'%c' out of range LCD mode\n", f);
 578                                 else {
 579                                         features->optional[features->count++] =
 580                                                         &s3c_device_lcd;
 581                                         features->lcd_index = li;
 582                                 }
 583                         }
 584                         features->done |= FEATURE_SCREEN;
 585                         break;
 586                 case 'b':
 587                         if (features->done & FEATURE_BACKLIGHT)
 588                                 printk(KERN_INFO "MINI2440: '%c' ignored, "
 589                                         "backlight already set\n", f);
 590                         else {
 591                                 features->optional[features->count++] =
 592                                                 &mini2440_led_backlight;
 593                         }
 594                         features->done |= FEATURE_BACKLIGHT;
 595                         break;
 596                 case 't':
 597                         printk(KERN_INFO "MINI2440: '%c' ignored, "
 598                                 "touchscreen not compiled in\n", f);
 599                         break;
 600                 case 'c':
 601                         if (features->done & FEATURE_CAMERA)
 602                                 printk(KERN_INFO "MINI2440: '%c' ignored, "
 603                                         "camera already registered\n", f);
 604                         else
 605                                 features->optional[features->count++] =
 606                                         &s3c_device_camif;
 607                         features->done |= FEATURE_CAMERA;
 608                         break;
 609                 }
 610         }
 611 }
 612
 613 static void __init mini2440_init(void)
 614 {
 615         struct mini2440_features_t features = { 0 };
 616         int i;
 617
 618         printk(KERN_INFO "MINI2440: Option string mini2440=%s\n",
 619                         mini2440_features_str);
 620
 621         /* Parse the feature string */
 622         mini2440_parse_features(&features, mini2440_features_str);
 623
 624         /* turn LCD on */
 625         s3c_gpio_cfgpin(S3C2410_GPC(0), S3C2410_GPC0_LEND);
 626
 627         /* Turn the backlight early on */
 628         WARN_ON(gpio_request(S3C2410_GPG(4), "backlight"));
 629         gpio_direction_output(S3C2410_GPG(4), 1);
 630
 631         /* remove pullup on optional PWM backlight -- unused on 3.5 and 7"s */
 632         s3c_gpio_setpull(S3C2410_GPB(1), S3C_GPIO_PULL_UP);
 633         s3c2410_gpio_setpin(S3C2410_GPB(1), 0);
 634         s3c_gpio_cfgpin(S3C2410_GPB(1), S3C2410_GPIO_INPUT);
 635
 636         /* mark the key as input, without pullups (there is one on the board) */
 637         for (i = 0; i < ARRAY_SIZE(mini2440_buttons); i++) {
 638                 s3c_gpio_setpull(mini2440_buttons[i].gpio, S3C_GPIO_PULL_UP);
 639                 s3c_gpio_cfgpin(mini2440_buttons[i].gpio, S3C2410_GPIO_INPUT);
 640         }
 641         if (features.lcd_index != -1) {
 642                 int li;
 643
 644                 mini2440_fb_info.displays =
 645                         &mini2440_lcd_cfg[features.lcd_index];
 646
 647                 printk(KERN_INFO "MINI2440: LCD");
 648                 for (li = 0; li < ARRAY_SIZE(mini2440_lcd_cfg); li++)
 649                         if (li == features.lcd_index)
 650                                 printk(" [%d:%dx%d]", li,
 651                                         mini2440_lcd_cfg[li].width,
 652                                         mini2440_lcd_cfg[li].height);
 653                         else
 654                                 printk(" %d:%dx%d", li,
 655                                         mini2440_lcd_cfg[li].width,
 656                                         mini2440_lcd_cfg[li].height);
 657                 printk("\n");
 658                 s3c24xx_fb_set_platdata(&mini2440_fb_info);
 659         }
 660
 661         s3c24xx_udc_set_platdata(&mini2440_udc_cfg);
 662         s3c24xx_mci_set_platdata(&mini2440_mmc_cfg);
 663         s3c_nand_set_platdata(&mini2440_nand_info);
 664         s3c_i2c0_set_platdata(NULL);
 665
 666         i2c_register_board_info(0, mini2440_i2c_devs,
 667                                 ARRAY_SIZE(mini2440_i2c_devs));
 668
 669         platform_add_devices(mini2440_devices, ARRAY_SIZE(mini2440_devices));
 670
 671         if (features.count)     /* the optional features */
 672                 platform_add_devices(features.optional, features.count);
 673
 674 }
 675
 676
 677 MACHINE_START(MINI2440, "MINI2440")
 678         /* Maintainer: Michel Pollet <buserror@gmail.com> */
 679         .boot_params    = S3C2410_SDRAM_PA + 0x100,
 680         .map_io         = mini2440_map_io,
 681         .init_machine   = mini2440_init,
 682         .init_irq       = s3c24xx_init_irq,
 683         .timer          = &s3c24xx_timer,
 684 MACHINE_END