arch/arm/mach-s3c24xx/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 <linux/platform_data/leds-s3c24xx.h>
  43 #include <mach/regs-lcd.h>
  44 #include <mach/irqs.h>
  45 #include <linux/platform_data/mtd-nand-s3c2410.h>
  46 #include <linux/platform_data/i2c-s3c2410.h>
  47 #include <linux/platform_data/mmc-s3cmci.h>
  48 #include <linux/platform_data/usb-s3c2410_udc.h>
  49
  50 #include <linux/mtd/mtd.h>
  51 #include <linux/mtd/nand.h>
  52 #include <linux/mtd/nand_ecc.h>
  53 #include <linux/mtd/partitions.h>
  54
  55 #include <plat/gpio-cfg.h>
  56 #include <plat/clock.h>
  57 #include <plat/devs.h>
  58 #include <plat/cpu.h>
  59 #include <plat/samsung-time.h>
  60
  61 #include <sound/s3c24xx_uda134x.h>
  62
  63 #include "common.h"
  64
  65 #define MACH_MINI2440_DM9K_BASE (S3C2410_CS4 + 0x300)
  66
  67 static struct map_desc mini2440_iodesc[] __initdata = {
  68         /* nothing to declare, move along */
  69 };
  70
  71 #define UCON S3C2410_UCON_DEFAULT
  72 #define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
  73 #define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE
  74
  75
  76 static struct s3c2410_uartcfg mini2440_uartcfgs[] __initdata = {
  77         [0] = {
  78                 .hwport      = 0,
  79                 .flags       = 0,
  80                 .ucon        = UCON,
  81                 .ulcon       = ULCON,
  82                 .ufcon       = UFCON,
  83         },
  84         [1] = {
  85                 .hwport      = 1,
  86                 .flags       = 0,
  87                 .ucon        = UCON,
  88                 .ulcon       = ULCON,
  89                 .ufcon       = UFCON,
  90         },
  91         [2] = {
  92                 .hwport      = 2,
  93                 .flags       = 0,
  94                 .ucon        = UCON,
  95                 .ulcon       = ULCON,
  96                 .ufcon       = UFCON,
  97         },
  98 };
  99
 100 /* USB device UDC support */
 101
 102 static struct s3c2410_udc_mach_info mini2440_udc_cfg __initdata = {
 103         .pullup_pin = S3C2410_GPC(5),
 104 };
 105
 106
 107 /* LCD timing and setup */
 108
 109 /*
 110  * This macro simplifies the table bellow
 111  */
 112 #define _LCD_DECLARE(_clock,_xres,margin_left,margin_right,hsync, \
 113                         _yres,margin_top,margin_bottom,vsync, refresh) \
 114         .width = _xres, \
 115         .xres = _xres, \
 116         .height = _yres, \
 117         .yres = _yres, \
 118         .left_margin    = margin_left,  \
 119         .right_margin   = margin_right, \
 120         .upper_margin   = margin_top,   \
 121         .lower_margin   = margin_bottom,        \
 122         .hsync_len      = hsync,        \
 123         .vsync_len      = vsync,        \
 124         .pixclock       = ((_clock*100000000000LL) /    \
 125                            ((refresh) * \
 126                            (hsync + margin_left + _xres + margin_right) * \
 127                            (vsync + margin_top + _yres + margin_bottom))), \
 128         .bpp            = 16,\
 129         .type           = (S3C2410_LCDCON1_TFT16BPP |\
 130                            S3C2410_LCDCON1_TFT)
 131
 132 static struct s3c2410fb_display mini2440_lcd_cfg[] __initdata = {
 133         [0] = { /* mini2440 + 3.5" TFT + touchscreen */
 134                 _LCD_DECLARE(
 135                         7,                      /* The 3.5 is quite fast */
 136                         240, 21, 38, 6,         /* x timing */
 137                         320, 4, 4, 2,           /* y timing */
 138                         60),                    /* refresh rate */
 139                 .lcdcon5        = (S3C2410_LCDCON5_FRM565 |
 140                                    S3C2410_LCDCON5_INVVLINE |
 141                                    S3C2410_LCDCON5_INVVFRAME |
 142                                    S3C2410_LCDCON5_INVVDEN |
 143                                    S3C2410_LCDCON5_PWREN),
 144         },
 145         [1] = { /* mini2440 + 7" TFT + touchscreen */
 146                 _LCD_DECLARE(
 147                         10,                     /* the 7" runs slower */
 148                         800, 40, 40, 48,        /* x timing */
 149                         480, 29, 3, 3,          /* y timing */
 150                         50),                    /* refresh rate */
 151                 .lcdcon5        = (S3C2410_LCDCON5_FRM565 |
 152                                    S3C2410_LCDCON5_INVVLINE |
 153                                    S3C2410_LCDCON5_INVVFRAME |
 154                                    S3C2410_LCDCON5_PWREN),
 155         },
 156         /* The VGA shield can outout at several resolutions. All share
 157          * the same timings, however, anything smaller than 1024x768
 158          * will only be displayed in the top left corner of a 1024x768
 159          * XGA output unless you add optional dip switches to the shield.
 160          * Therefore timings for other resolutions have been omitted here.
 161          */
 162         [2] = {
 163                 _LCD_DECLARE(
 164                         10,
 165                         1024, 1, 2, 2,          /* y timing */
 166                         768, 200, 16, 16,       /* x timing */
 167                         24),    /* refresh rate, maximum stable,
 168                                  tested with the FPGA shield */
 169                 .lcdcon5        = (S3C2410_LCDCON5_FRM565 |
 170                                    S3C2410_LCDCON5_HWSWP),
 171         },
 172         /* mini2440 + 3.5" TFT (LCD-W35i, LQ035Q1DG06 type) + touchscreen*/
 173         [3] = {
 174                 _LCD_DECLARE(
 175                         /* clock */
 176                         7,
 177                         /* xres, margin_right, margin_left, hsync */
 178                         320, 68, 66, 4,
 179                         /* yres, margin_top, margin_bottom, vsync */
 180                         240, 4, 4, 9,
 181                         /* refresh rate */
 182                         60),
 183                 .lcdcon5        = (S3C2410_LCDCON5_FRM565 |
 184                                    S3C2410_LCDCON5_INVVDEN |
 185                                    S3C2410_LCDCON5_INVVFRAME |
 186                                    S3C2410_LCDCON5_INVVLINE |
 187                                    S3C2410_LCDCON5_INVVCLK |
 188                                    S3C2410_LCDCON5_HWSWP),
 189         },
 190 };
 191
 192 /* todo - put into gpio header */
 193
 194 #define S3C2410_GPCCON_MASK(x)  (3 << ((x) * 2))
 195 #define S3C2410_GPDCON_MASK(x)  (3 << ((x) * 2))
 196
 197 static struct s3c2410fb_mach_info mini2440_fb_info __initdata = {
 198         .displays        = &mini2440_lcd_cfg[0], /* not constant! see init */
 199         .num_displays    = 1,
 200         .default_display = 0,
 201
 202         /* Enable VD[2..7], VD[10..15], VD[18..23] and VCLK, syncs, VDEN
 203          * and disable the pull down resistors on pins we are using for LCD
 204          * data. */
 205
 206         .gpcup          = (0xf << 1) | (0x3f << 10),
 207
 208         .gpccon         = (S3C2410_GPC1_VCLK   | S3C2410_GPC2_VLINE |
 209                            S3C2410_GPC3_VFRAME | S3C2410_GPC4_VM |
 210                            S3C2410_GPC10_VD2   | S3C2410_GPC11_VD3 |
 211                            S3C2410_GPC12_VD4   | S3C2410_GPC13_VD5 |
 212                            S3C2410_GPC14_VD6   | S3C2410_GPC15_VD7),
 213
 214         .gpccon_mask    = (S3C2410_GPCCON_MASK(1)  | S3C2410_GPCCON_MASK(2)  |
 215                            S3C2410_GPCCON_MASK(3)  | S3C2410_GPCCON_MASK(4)  |
 216                            S3C2410_GPCCON_MASK(10) | S3C2410_GPCCON_MASK(11) |
 217                            S3C2410_GPCCON_MASK(12) | S3C2410_GPCCON_MASK(13) |
 218                            S3C2410_GPCCON_MASK(14) | S3C2410_GPCCON_MASK(15)),
 219
 220         .gpdup          = (0x3f << 2) | (0x3f << 10),
 221
 222         .gpdcon         = (S3C2410_GPD2_VD10  | S3C2410_GPD3_VD11 |
 223                            S3C2410_GPD4_VD12  | S3C2410_GPD5_VD13 |
 224                            S3C2410_GPD6_VD14  | S3C2410_GPD7_VD15 |
 225                            S3C2410_GPD10_VD18 | S3C2410_GPD11_VD19 |
 226                            S3C2410_GPD12_VD20 | S3C2410_GPD13_VD21 |
 227                            S3C2410_GPD14_VD22 | S3C2410_GPD15_VD23),
 228
 229         .gpdcon_mask    = (S3C2410_GPDCON_MASK(2)  | S3C2410_GPDCON_MASK(3) |
 230                            S3C2410_GPDCON_MASK(4)  | S3C2410_GPDCON_MASK(5) |
 231                            S3C2410_GPDCON_MASK(6)  | S3C2410_GPDCON_MASK(7) |
 232                            S3C2410_GPDCON_MASK(10) | S3C2410_GPDCON_MASK(11)|
 233                            S3C2410_GPDCON_MASK(12) | S3C2410_GPDCON_MASK(13)|
 234                            S3C2410_GPDCON_MASK(14) | S3C2410_GPDCON_MASK(15)),
 235 };
 236
 237 /* MMC/SD  */
 238
 239 static struct s3c24xx_mci_pdata mini2440_mmc_cfg __initdata = {
 240    .gpio_detect   = S3C2410_GPG(8),
 241    .gpio_wprotect = S3C2410_GPH(8),
 242    .set_power     = NULL,
 243    .ocr_avail     = MMC_VDD_32_33|MMC_VDD_33_34,
 244 };
 245
 246 /* NAND Flash on MINI2440 board */
 247
 248 static struct mtd_partition mini2440_default_nand_part[] __initdata = {
 249         [0] = {
 250                 .name   = "u-boot",
 251                 .size   = SZ_256K,
 252                 .offset = 0,
 253         },
 254         [1] = {
 255                 .name   = "u-boot-env",
 256                 .size   = SZ_128K,
 257                 .offset = SZ_256K,
 258         },
 259         [2] = {
 260                 .name   = "kernel",
 261                 /* 5 megabytes, for a kernel with no modules
 262                  * or a uImage with a ramdisk attached */
 263                 .size   = 0x00500000,
 264                 .offset = SZ_256K + SZ_128K,
 265         },
 266         [3] = {
 267                 .name   = "root",
 268                 .offset = SZ_256K + SZ_128K + 0x00500000,
 269                 .size   = MTDPART_SIZ_FULL,
 270         },
 271 };
 272
 273 static struct s3c2410_nand_set mini2440_nand_sets[] __initdata = {
 274         [0] = {
 275                 .name           = "nand",
 276                 .nr_chips       = 1,
 277                 .nr_partitions  = ARRAY_SIZE(mini2440_default_nand_part),
 278                 .partitions     = mini2440_default_nand_part,
 279                 .flash_bbt      = 1, /* we use u-boot to create a BBT */
 280         },
 281 };
 282
 283 static struct s3c2410_platform_nand mini2440_nand_info __initdata = {
 284         .tacls          = 0,
 285         .twrph0         = 25,
 286         .twrph1         = 15,
 287         .nr_sets        = ARRAY_SIZE(mini2440_nand_sets),
 288         .sets           = mini2440_nand_sets,
 289         .ignore_unset_ecc = 1,
 290 };
 291
 292 /* DM9000AEP 10/100 ethernet controller */
 293
 294 static struct resource mini2440_dm9k_resource[] = {
 295         [0] = DEFINE_RES_MEM(MACH_MINI2440_DM9K_BASE, 4),
 296         [1] = DEFINE_RES_MEM(MACH_MINI2440_DM9K_BASE + 4, 4),
 297         [2] = DEFINE_RES_NAMED(IRQ_EINT7, 1, NULL, IORESOURCE_IRQ \
 298                                                 | IORESOURCE_IRQ_HIGHEDGE),
 299 };
 300
 301 /*
 302  * The DM9000 has no eeprom, and it's MAC address is set by
 303  * the bootloader before starting the kernel.
 304  */
 305 static struct dm9000_plat_data mini2440_dm9k_pdata = {
 306         .flags          = (DM9000_PLATF_16BITONLY | DM9000_PLATF_NO_EEPROM),
 307 };
 308
 309 static struct platform_device mini2440_device_eth = {
 310         .name           = "dm9000",
 311         .id             = -1,
 312         .num_resources  = ARRAY_SIZE(mini2440_dm9k_resource),
 313         .resource       = mini2440_dm9k_resource,
 314         .dev            = {
 315                 .platform_data  = &mini2440_dm9k_pdata,
 316         },
 317 };
 318
 319 /*  CON5
 320  *      +--+     /-----\
 321  *      |  |    |       |
 322  *      |  |    |  BAT  |
 323  *      |  |     \_____/
 324  *      |  |
 325  *      |  |  +----+  +----+
 326  *      |  |  | K5 |  | K1 |
 327  *      |  |  +----+  +----+
 328  *      |  |  +----+  +----+
 329  *      |  |  | K4 |  | K2 |
 330  *      |  |  +----+  +----+
 331  *      |  |  +----+  +----+
 332  *      |  |  | K6 |  | K3 |
 333  *      |  |  +----+  +----+
 334  *        .....
 335  */
 336 static struct gpio_keys_button mini2440_buttons[] = {
 337         {
 338                 .gpio           = S3C2410_GPG(0),               /* K1 */
 339                 .code           = KEY_F1,
 340                 .desc           = "Button 1",
 341                 .active_low     = 1,
 342         },
 343         {
 344                 .gpio           = S3C2410_GPG(3),               /* K2 */
 345                 .code           = KEY_F2,
 346                 .desc           = "Button 2",
 347                 .active_low     = 1,
 348         },
 349         {
 350                 .gpio           = S3C2410_GPG(5),               /* K3 */
 351                 .code           = KEY_F3,
 352                 .desc           = "Button 3",
 353                 .active_low     = 1,
 354         },
 355         {
 356                 .gpio           = S3C2410_GPG(6),               /* K4 */
 357                 .code           = KEY_POWER,
 358                 .desc           = "Power",
 359                 .active_low     = 1,
 360         },
 361         {
 362                 .gpio           = S3C2410_GPG(7),               /* K5 */
 363                 .code           = KEY_F5,
 364                 .desc           = "Button 5",
 365                 .active_low     = 1,
 366         },
 367 #if 0
 368         /* this pin is also known as TCLK1 and seems to already
 369          * marked as "in use" somehow in the kernel -- possibly wrongly */
 370         {
 371                 .gpio           = S3C2410_GPG(11),      /* K6 */
 372                 .code           = KEY_F6,
 373                 .desc           = "Button 6",
 374                 .active_low     = 1,
 375         },
 376 #endif
 377 };
 378
 379 static struct gpio_keys_platform_data mini2440_button_data = {
 380         .buttons        = mini2440_buttons,
 381         .nbuttons       = ARRAY_SIZE(mini2440_buttons),
 382 };
 383
 384 static struct platform_device mini2440_button_device = {
 385         .name           = "gpio-keys",
 386         .id             = -1,
 387         .dev            = {
 388                 .platform_data  = &mini2440_button_data,
 389         }
 390 };
 391
 392 /* LEDS */
 393
 394 static struct s3c24xx_led_platdata mini2440_led1_pdata = {
 395         .name           = "led1",
 396         .gpio           = S3C2410_GPB(5),
 397         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
 398         .def_trigger    = "heartbeat",
 399 };
 400
 401 static struct s3c24xx_led_platdata mini2440_led2_pdata = {
 402         .name           = "led2",
 403         .gpio           = S3C2410_GPB(6),
 404         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
 405         .def_trigger    = "nand-disk",
 406 };
 407
 408 static struct s3c24xx_led_platdata mini2440_led3_pdata = {
 409         .name           = "led3",
 410         .gpio           = S3C2410_GPB(7),
 411         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
 412         .def_trigger    = "mmc0",
 413 };
 414
 415 static struct s3c24xx_led_platdata mini2440_led4_pdata = {
 416         .name           = "led4",
 417         .gpio           = S3C2410_GPB(8),
 418         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
 419         .def_trigger    = "",
 420 };
 421
 422 static struct s3c24xx_led_platdata mini2440_led_backlight_pdata = {
 423         .name           = "backlight",
 424         .gpio           = S3C2410_GPG(4),
 425         .def_trigger    = "backlight",
 426 };
 427
 428 static struct platform_device mini2440_led1 = {
 429         .name           = "s3c24xx_led",
 430         .id             = 1,
 431         .dev            = {
 432                 .platform_data  = &mini2440_led1_pdata,
 433         },
 434 };
 435
 436 static struct platform_device mini2440_led2 = {
 437         .name           = "s3c24xx_led",
 438         .id             = 2,
 439         .dev            = {
 440                 .platform_data  = &mini2440_led2_pdata,
 441         },
 442 };
 443
 444 static struct platform_device mini2440_led3 = {
 445         .name           = "s3c24xx_led",
 446         .id             = 3,
 447         .dev            = {
 448                 .platform_data  = &mini2440_led3_pdata,
 449         },
 450 };
 451
 452 static struct platform_device mini2440_led4 = {
 453         .name           = "s3c24xx_led",
 454         .id             = 4,
 455         .dev            = {
 456                 .platform_data  = &mini2440_led4_pdata,
 457         },
 458 };
 459
 460 static struct platform_device mini2440_led_backlight = {
 461         .name           = "s3c24xx_led",
 462         .id             = 5,
 463         .dev            = {
 464                 .platform_data  = &mini2440_led_backlight_pdata,
 465         },
 466 };
 467
 468 /* AUDIO */
 469
 470 static struct s3c24xx_uda134x_platform_data mini2440_audio_pins = {
 471         .l3_clk = S3C2410_GPB(4),
 472         .l3_mode = S3C2410_GPB(2),
 473         .l3_data = S3C2410_GPB(3),
 474         .model = UDA134X_UDA1341
 475 };
 476
 477 static struct platform_device mini2440_audio = {
 478         .name           = "s3c24xx_uda134x",
 479         .id             = 0,
 480         .dev            = {
 481                 .platform_data  = &mini2440_audio_pins,
 482         },
 483 };
 484
 485 /*
 486  * I2C devices
 487  */
 488 static struct at24_platform_data at24c08 = {
 489         .byte_len       = SZ_8K / 8,
 490         .page_size      = 16,
 491 };
 492
 493 static struct i2c_board_info mini2440_i2c_devs[] __initdata = {
 494         {
 495                 I2C_BOARD_INFO("24c08", 0x50),
 496                 .platform_data = &at24c08,
 497         },
 498 };
 499
 500 static struct platform_device uda1340_codec = {
 501                 .name = "uda134x-codec",
 502                 .id = -1,
 503 };
 504
 505 static struct platform_device *mini2440_devices[] __initdata = {
 506         &s3c_device_ohci,
 507         &s3c_device_wdt,
 508         &s3c_device_i2c0,
 509         &s3c_device_rtc,
 510         &s3c_device_usbgadget,
 511         &mini2440_device_eth,
 512         &mini2440_led1,
 513         &mini2440_led2,
 514         &mini2440_led3,
 515         &mini2440_led4,
 516         &mini2440_button_device,
 517         &s3c_device_nand,
 518         &s3c_device_sdi,
 519         &s3c_device_iis,
 520         &uda1340_codec,
 521         &mini2440_audio,
 522 };
 523
 524 static void __init mini2440_map_io(void)
 525 {
 526         s3c24xx_init_io(mini2440_iodesc, ARRAY_SIZE(mini2440_iodesc));
 527         s3c24xx_init_clocks(12000000);
 528         s3c24xx_init_uarts(mini2440_uartcfgs, ARRAY_SIZE(mini2440_uartcfgs));
 529         samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
 530 }
 531
 532 /*
 533  * mini2440_features string
 534  *
 535  * t = Touchscreen present
 536  * b = backlight control
 537  * c = camera [TODO]
 538  * 0-9 LCD configuration
 539  *
 540  */
 541 static char mini2440_features_str[12] __initdata = "0tb";
 542
 543 static int __init mini2440_features_setup(char *str)
 544 {
 545         if (str)
 546                 strlcpy(mini2440_features_str, str, sizeof(mini2440_features_str));
 547         return 1;
 548 }
 549
 550 __setup("mini2440=", mini2440_features_setup);
 551
 552 #define FEATURE_SCREEN (1 << 0)
 553 #define FEATURE_BACKLIGHT (1 << 1)
 554 #define FEATURE_TOUCH (1 << 2)
 555 #define FEATURE_CAMERA (1 << 3)
 556
 557 struct mini2440_features_t {
 558         int count;
 559         int done;
 560         int lcd_index;
 561         struct platform_device *optional[8];
 562 };
 563
 564 static void __init mini2440_parse_features(
 565                 struct mini2440_features_t * features,
 566                 const char * features_str )
 567 {
 568         const char * fp = features_str;
 569
 570         features->count = 0;
 571         features->done = 0;
 572         features->lcd_index = -1;
 573
 574         while (*fp) {
 575                 char f = *fp++;
 576
 577                 switch (f) {
 578                 case '0'...'9': /* tft screen */
 579                         if (features->done & FEATURE_SCREEN) {
 580                                 printk(KERN_INFO "MINI2440: '%c' ignored, "
 581                                         "screen type already set\n", f);
 582                         } else {
 583                                 int li = f - '0';
 584                                 if (li >= ARRAY_SIZE(mini2440_lcd_cfg))
 585                                         printk(KERN_INFO "MINI2440: "
 586                                                 "'%c' out of range LCD mode\n", f);
 587                                 else {
 588                                         features->optional[features->count++] =
 589                                                         &s3c_device_lcd;
 590                                         features->lcd_index = li;
 591                                 }
 592                         }
 593                         features->done |= FEATURE_SCREEN;
 594                         break;
 595                 case 'b':
 596                         if (features->done & FEATURE_BACKLIGHT)
 597                                 printk(KERN_INFO "MINI2440: '%c' ignored, "
 598                                         "backlight already set\n", f);
 599                         else {
 600                                 features->optional[features->count++] =
 601                                                 &mini2440_led_backlight;
 602                         }
 603                         features->done |= FEATURE_BACKLIGHT;
 604                         break;
 605                 case 't':
 606                         printk(KERN_INFO "MINI2440: '%c' ignored, "
 607                                 "touchscreen not compiled in\n", f);
 608                         break;
 609                 case 'c':
 610                         if (features->done & FEATURE_CAMERA)
 611                                 printk(KERN_INFO "MINI2440: '%c' ignored, "
 612                                         "camera already registered\n", f);
 613                         else
 614                                 features->optional[features->count++] =
 615                                         &s3c_device_camif;
 616                         features->done |= FEATURE_CAMERA;
 617                         break;
 618                 }
 619         }
 620 }
 621
 622 static void __init mini2440_init(void)
 623 {
 624         struct mini2440_features_t features = { 0 };
 625         int i;
 626
 627         printk(KERN_INFO "MINI2440: Option string mini2440=%s\n",
 628                         mini2440_features_str);
 629
 630         /* Parse the feature string */
 631         mini2440_parse_features(&features, mini2440_features_str);
 632
 633         /* turn LCD on */
 634         s3c_gpio_cfgpin(S3C2410_GPC(0), S3C2410_GPC0_LEND);
 635
 636         /* Turn the backlight early on */
 637         WARN_ON(gpio_request_one(S3C2410_GPG(4), GPIOF_OUT_INIT_HIGH, NULL));
 638         gpio_free(S3C2410_GPG(4));
 639
 640         /* remove pullup on optional PWM backlight -- unused on 3.5 and 7"s */
 641         gpio_request_one(S3C2410_GPB(1), GPIOF_IN, NULL);
 642         s3c_gpio_setpull(S3C2410_GPB(1), S3C_GPIO_PULL_UP);
 643         gpio_free(S3C2410_GPB(1));
 644
 645         /* mark the key as input, without pullups (there is one on the board) */
 646         for (i = 0; i < ARRAY_SIZE(mini2440_buttons); i++) {
 647                 s3c_gpio_setpull(mini2440_buttons[i].gpio, S3C_GPIO_PULL_UP);
 648                 s3c_gpio_cfgpin(mini2440_buttons[i].gpio, S3C2410_GPIO_INPUT);
 649         }
 650         if (features.lcd_index != -1) {
 651                 int li;
 652
 653                 mini2440_fb_info.displays =
 654                         &mini2440_lcd_cfg[features.lcd_index];
 655
 656                 printk(KERN_INFO "MINI2440: LCD");
 657                 for (li = 0; li < ARRAY_SIZE(mini2440_lcd_cfg); li++)
 658                         if (li == features.lcd_index)
 659                                 printk(" [%d:%dx%d]", li,
 660                                         mini2440_lcd_cfg[li].width,
 661                                         mini2440_lcd_cfg[li].height);
 662                         else
 663                                 printk(" %d:%dx%d", li,
 664                                         mini2440_lcd_cfg[li].width,
 665                                         mini2440_lcd_cfg[li].height);
 666                 printk("\n");
 667                 s3c24xx_fb_set_platdata(&mini2440_fb_info);
 668         }
 669
 670         s3c24xx_udc_set_platdata(&mini2440_udc_cfg);
 671         s3c24xx_mci_set_platdata(&mini2440_mmc_cfg);
 672         s3c_nand_set_platdata(&mini2440_nand_info);
 673         s3c_i2c0_set_platdata(NULL);
 674
 675         i2c_register_board_info(0, mini2440_i2c_devs,
 676                                 ARRAY_SIZE(mini2440_i2c_devs));
 677
 678         platform_add_devices(mini2440_devices, ARRAY_SIZE(mini2440_devices));
 679
 680         if (features.count)     /* the optional features */
 681                 platform_add_devices(features.optional, features.count);
 682
 683 }
 684
 685
 686 MACHINE_START(MINI2440, "MINI2440")
 687         /* Maintainer: Michel Pollet <buserror@gmail.com> */
 688         .atag_offset    = 0x100,
 689         .map_io         = mini2440_map_io,
 690         .init_machine   = mini2440_init,
 691         .init_irq       = s3c2440_init_irq,
 692         .init_time      = samsung_timer_init,
 693         .restart        = s3c244x_restart,
 694 MACHINE_END