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 /*
  52  * This is compiled conditionaly, as:
  53  * 1) not everyone needs the touchscreen
  54  * 2) that s3c_ts code might not have been added
  55  *      to the kernel with this file
  56  */
  57 #ifdef CONFIG_TOUCHSCREEN_S3C2410
  58 #include <mach/ts.h>
  59 #endif
  60
  61 #include <linux/mtd/mtd.h>
  62 #include <linux/mtd/nand.h>
  63 #include <linux/mtd/nand_ecc.h>
  64 #include <linux/mtd/partitions.h>
  65
  66 #include <plat/clock.h>
  67 #include <plat/devs.h>
  68 #include <plat/cpu.h>
  69
  70 #include <sound/s3c24xx_uda134x.h>
  71
  72 #ifdef CONFIG_TOUCHSCREEN_FILTER
  73 #include <../drivers/input/touchscreen/ts_filter_linear.h>
  74 #include <../drivers/input/touchscreen/ts_filter_mean.h>
  75 #include <../drivers/input/touchscreen/ts_filter_median.h>
  76 #include <../drivers/input/touchscreen/ts_filter_group.h>
  77 #endif
  78
  79 #define MACH_MINI2440_DM9K_BASE (S3C2410_CS4 + 0x300)
  80
  81 static struct map_desc mini2440_iodesc[] = {
  82         /* nothing to declare, move along */
  83 };
  84
  85 #define UCON S3C2410_UCON_DEFAULT
  86 #define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
  87 #define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE
  88
  89
  90 static struct s3c2410_uartcfg mini2440_uartcfgs[] = {
  91         [0] = {
  92                 .hwport      = 0,
  93                 .flags       = 0,
  94                 .ucon        = UCON,
  95                 .ulcon       = ULCON,
  96                 .ufcon       = UFCON,
  97         },
  98         [1] = {
  99                 .hwport      = 1,
 100                 .flags       = 0,
 101                 .ucon        = UCON,
 102                 .ulcon       = ULCON,
 103                 .ufcon       = UFCON,
 104         },
 105         [2] = {
 106                 .hwport      = 2,
 107                 .flags       = 0,
 108                 .ucon        = UCON,
 109                 .ulcon       = ULCON,
 110                 .ufcon       = UFCON,
 111         },
 112 };
 113
 114 /* USB device UDC support */
 115
 116 static void mini2440_udc_pullup(enum s3c2410_udc_cmd_e cmd)
 117 {
 118         pr_debug("udc: pullup(%d)\n", cmd);
 119
 120         switch (cmd) {
 121                 case S3C2410_UDC_P_ENABLE :
 122                         s3c2410_gpio_setpin(S3C2410_GPC(5), 1);
 123                         break;
 124                 case S3C2410_UDC_P_DISABLE :
 125                         s3c2410_gpio_setpin(S3C2410_GPC(5), 0);
 126                         break;
 127                 case S3C2410_UDC_P_RESET :
 128                         break;
 129                 default:
 130                         break;
 131         }
 132 }
 133
 134 static struct s3c2410_udc_mach_info mini2440_udc_cfg = {
 135         .udc_command            = mini2440_udc_pullup,
 136 };
 137
 138 /* touchscreen configuration */
 139
 140 #ifdef CONFIG_TOUCHSCREEN_FILTER
 141 static struct ts_filter_linear_configuration mini2440_ts_linear_config = {
 142         .constants = {
 143                 0, /* x factor */
 144                 1, /* y proportion */
 145                 0, /* x offset */
 146
 147                 1, /* x factor */
 148                 0, /* y factor */
 149                 0, /* y offset */
 150
 151                 1  /* common divisor */
 152         },
 153         .coord0 = 0,
 154         .coord1 = 1,
 155 };
 156
 157 static struct ts_filter_group_configuration mini2440_ts_group_config = {
 158         .extent = 12,
 159         .close_enough = 10,
 160         .threshold = 6,         /* at least half of the points in a group */
 161         .attempts = 10,
 162 };
 163
 164 static struct ts_filter_median_configuration mini2440_ts_median_config = {
 165         .extent = 20,
 166         .decimation_below = 3,
 167         .decimation_threshold = 8 * 3,
 168         .decimation_above = 4,
 169 };
 170
 171 static struct ts_filter_mean_configuration mini2440_ts_mean_config = {
 172         .bits_filter_length = 2, /* 4 points */
 173 };
 174
 175 static struct s3c2410_ts_mach_info mini2440_ts_cfg = {
 176         .delay = 10000,
 177         .presc = 0xff, /* slow as we can go */
 178         .filter_sequence = {
 179                 [0] = &ts_filter_group_api,
 180                 [1] = &ts_filter_median_api,
 181                 [2] = &ts_filter_mean_api,
 182                 [3] = &ts_filter_linear_api,
 183         },
 184         .filter_config = {
 185                 [0] = &mini2440_ts_group_config,
 186                 [1] = &mini2440_ts_median_config,
 187                 [2] = &mini2440_ts_mean_config,
 188                 [3] = &mini2440_ts_linear_config,
 189         },
 190 };
 191 #else /* !CONFIG_TOUCHSCREEN_FILTER */
 192 #ifdef CONFIG_TOUCHSCREEN_S3C2410
 193 static struct s3c2410_ts_mach_info mini2440_ts_cfg = {
 194         .delay = 10000,
 195         .presc = 0xff, /* slow as we can go */
 196 };
 197 #endif /* CONFIG_TOUCHSCREEN_S3C2410 */
 198 #endif
 199
 200 /* LCD driver info */
 201
 202 /* LCD timing and setup */
 203
 204 /*
 205  * This macro simplifies the table bellow
 206  */
 207 #define _LCD_DECLARE(_clock,_xres,margin_left,margin_right,hsync, \
 208                         _yres,margin_top,margin_bottom,vsync, refresh) \
 209         .width = _xres, \
 210         .xres = _xres, \
 211         .height = _yres, \
 212         .yres = _yres, \
 213         .left_margin    = margin_left,  \
 214         .right_margin   = margin_right, \
 215         .upper_margin   = margin_top,   \
 216         .lower_margin   = margin_bottom,        \
 217         .hsync_len      = hsync,        \
 218         .vsync_len      = vsync,        \
 219         .pixclock       = ((_clock*100000000000LL) /    \
 220                            ((refresh) * \
 221                            (hsync + margin_left + _xres + margin_right) * \
 222                            (vsync + margin_top + _yres + margin_bottom))), \
 223         .bpp            = 16,\
 224         .type           = (S3C2410_LCDCON1_TFT16BPP |\
 225                            S3C2410_LCDCON1_TFT)
 226
 227 struct s3c2410fb_display mini2440_lcd_cfg[] = {
 228         [0] = { /* mini2440 + 3.5" TFT + touchscreen */
 229                 _LCD_DECLARE(
 230                         7,                      /* The 3.5 is quite fast */
 231                         240, 21, 38, 6,         /* x timing */
 232                         320, 4, 4, 2,           /* y timing */
 233                         60),                    /* refresh rate */
 234                 .lcdcon5        = (S3C2410_LCDCON5_FRM565 |
 235                                    S3C2410_LCDCON5_INVVLINE |
 236                                    S3C2410_LCDCON5_INVVFRAME |
 237                                    S3C2410_LCDCON5_INVVDEN |
 238                                    S3C2410_LCDCON5_PWREN),
 239         },
 240         [1] = { /* mini2440 + 7" TFT + touchscreen */
 241                 _LCD_DECLARE(
 242                         10,                     /* the 7" runs slower */
 243                         800, 40, 40, 48,        /* x timing */
 244                         480, 29, 3, 3,          /* y timing */
 245                         50),                    /* refresh rate */
 246                 .lcdcon5        = (S3C2410_LCDCON5_FRM565 |
 247                                    S3C2410_LCDCON5_INVVLINE |
 248                                    S3C2410_LCDCON5_INVVFRAME |
 249                                    S3C2410_LCDCON5_PWREN),
 250         },
 251         /* The VGA shield can outout at several resolutions. All share
 252          * the same timings, however, anything smaller than 1024x768
 253          * will only be displayed in the top left corner of a 1024x768
 254          * XGA output unless you add optional dip switches to the shield.
 255          * Therefore timings for other resolutions have been ommited here.
 256          */
 257         [2] = {
 258                 _LCD_DECLARE(
 259                         10,
 260                         1024, 1, 2, 2,          /* y timing */
 261                         768, 200, 16, 16,       /* x timing */
 262                         24),    /* refresh rate, maximum stable,
 263                                  tested with the FPGA shield */
 264                 .lcdcon5        = (S3C2410_LCDCON5_FRM565 |
 265                                    S3C2410_LCDCON5_HWSWP),
 266         },
 267 };
 268
 269 /* todo - put into gpio header */
 270
 271 #define S3C2410_GPCCON_MASK(x)  (3 << ((x) * 2))
 272 #define S3C2410_GPDCON_MASK(x)  (3 << ((x) * 2))
 273
 274 struct s3c2410fb_mach_info mini2440_fb_info = {
 275         .displays        = &mini2440_lcd_cfg[0], /* not constant! see init */
 276         .num_displays    = 1,
 277         .default_display = 0,
 278
 279         /* Enable VD[2..7], VD[10..15], VD[18..23] and VCLK, syncs, VDEN
 280          * and disable the pull down resistors on pins we are using for LCD
 281          * data. */
 282
 283         .gpcup          = (0xf << 1) | (0x3f << 10),
 284
 285         .gpccon         = (S3C2410_GPC1_VCLK   | S3C2410_GPC2_VLINE |
 286                            S3C2410_GPC3_VFRAME | S3C2410_GPC4_VM |
 287                            S3C2410_GPC10_VD2   | S3C2410_GPC11_VD3 |
 288                            S3C2410_GPC12_VD4   | S3C2410_GPC13_VD5 |
 289                            S3C2410_GPC14_VD6   | S3C2410_GPC15_VD7),
 290
 291         .gpccon_mask    = (S3C2410_GPCCON_MASK(1)  | S3C2410_GPCCON_MASK(2)  |
 292                            S3C2410_GPCCON_MASK(3)  | S3C2410_GPCCON_MASK(4)  |
 293                            S3C2410_GPCCON_MASK(10) | S3C2410_GPCCON_MASK(11) |
 294                            S3C2410_GPCCON_MASK(12) | S3C2410_GPCCON_MASK(13) |
 295                            S3C2410_GPCCON_MASK(14) | S3C2410_GPCCON_MASK(15)),
 296
 297         .gpdup          = (0x3f << 2) | (0x3f << 10),
 298
 299         .gpdcon         = (S3C2410_GPD2_VD10  | S3C2410_GPD3_VD11 |
 300                            S3C2410_GPD4_VD12  | S3C2410_GPD5_VD13 |
 301                            S3C2410_GPD6_VD14  | S3C2410_GPD7_VD15 |
 302                            S3C2410_GPD10_VD18 | S3C2410_GPD11_VD19 |
 303                            S3C2410_GPD12_VD20 | S3C2410_GPD13_VD21 |
 304                            S3C2410_GPD14_VD22 | S3C2410_GPD15_VD23),
 305
 306         .gpdcon_mask    = (S3C2410_GPDCON_MASK(2)  | S3C2410_GPDCON_MASK(3) |
 307                            S3C2410_GPDCON_MASK(4)  | S3C2410_GPDCON_MASK(5) |
 308                            S3C2410_GPDCON_MASK(6)  | S3C2410_GPDCON_MASK(7) |
 309                            S3C2410_GPDCON_MASK(10) | S3C2410_GPDCON_MASK(11)|
 310                            S3C2410_GPDCON_MASK(12) | S3C2410_GPDCON_MASK(13)|
 311                            S3C2410_GPDCON_MASK(14) | S3C2410_GPDCON_MASK(15)),
 312 };
 313
 314 /* MMC/SD  */
 315
 316 static struct s3c24xx_mci_pdata mini2440_mmc_cfg = {
 317    .gpio_detect   = S3C2410_GPG(8),
 318    .gpio_wprotect = S3C2410_GPH(8),
 319    .set_power     = NULL,
 320    .ocr_avail     = MMC_VDD_32_33|MMC_VDD_33_34,
 321 };
 322
 323 /* NAND Flash on MINI2440 board */
 324
 325 static struct mtd_partition mini2440_default_nand_part[] = {
 326         [0] = {
 327                 .name   = "u-boot",
 328                 .size   = SZ_256K,
 329                 .offset = 0,
 330         },
 331         [1] = {
 332                 .name   = "u-boot-env",
 333                 .size   = SZ_128K,
 334                 .offset = SZ_256K,
 335         },
 336         [2] = {
 337                 .name   = "kernel",
 338                 /* 5 megabytes, for a kernel with no modules
 339                  * or a uImage with a ramdisk attached */
 340                 .size   = 0x00500000,
 341                 .offset = SZ_256K + SZ_128K,
 342         },
 343         [3] = {
 344                 .name   = "root",
 345                 .offset = SZ_256K + SZ_128K + 0x00500000,
 346                 .size   = MTDPART_SIZ_FULL,
 347         },
 348 };
 349
 350 static struct s3c2410_nand_set mini2440_nand_sets[] = {
 351         [0] = {
 352                 .name           = "nand",
 353                 .nr_chips       = 1,
 354                 .nr_partitions  = ARRAY_SIZE(mini2440_default_nand_part),
 355                 .partitions     = mini2440_default_nand_part,
 356                 .flash_bbt      = 1, /* we use u-boot to create a BBT */
 357         },
 358 };
 359
 360 static struct s3c2410_platform_nand mini2440_nand_info = {
 361         .tacls          = 0,
 362         .twrph0         = 25,
 363         .twrph1         = 15,
 364         .nr_sets        = ARRAY_SIZE(mini2440_nand_sets),
 365         .sets           = mini2440_nand_sets,
 366         .ignore_unset_ecc = 1,
 367 };
 368
 369 /* DM9000AEP 10/100 ethernet controller */
 370
 371 static struct resource mini2440_dm9k_resource[] = {
 372         [0] = {
 373                 .start = MACH_MINI2440_DM9K_BASE,
 374                 .end   = MACH_MINI2440_DM9K_BASE + 3,
 375                 .flags = IORESOURCE_MEM
 376         },
 377         [1] = {
 378                 .start = MACH_MINI2440_DM9K_BASE + 4,
 379                 .end   = MACH_MINI2440_DM9K_BASE + 7,
 380                 .flags = IORESOURCE_MEM
 381         },
 382         [2] = {
 383                 .start = IRQ_EINT7,
 384                 .end   = IRQ_EINT7,
 385                 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
 386         }
 387 };
 388
 389 /*
 390  * The DM9000 has no eeprom, and it's MAC address is set by
 391  * the bootloader before starting the kernel.
 392  */
 393 static struct dm9000_plat_data mini2440_dm9k_pdata = {
 394         .flags          = (DM9000_PLATF_16BITONLY | DM9000_PLATF_NO_EEPROM),
 395 };
 396
 397 static struct platform_device mini2440_device_eth = {
 398         .name           = "dm9000",
 399         .id             = -1,
 400         .num_resources  = ARRAY_SIZE(mini2440_dm9k_resource),
 401         .resource       = mini2440_dm9k_resource,
 402         .dev            = {
 403                 .platform_data  = &mini2440_dm9k_pdata,
 404         },
 405 };
 406
 407 /*  CON5
 408  *      +--+     /-----\
 409  *      |  |    |       |
 410  *      |  |    |  BAT  |
 411  *      |  |     \_____/
 412  *      |  |
 413  *      |  |  +----+  +----+
 414  *      |  |  | K5 |  | K1 |
 415  *      |  |  +----+  +----+
 416  *      |  |  +----+  +----+
 417  *      |  |  | K4 |  | K2 |
 418  *      |  |  +----+  +----+
 419  *      |  |  +----+  +----+
 420  *      |  |  | K6 |  | K3 |
 421  *      |  |  +----+  +----+
 422  *        .....
 423  */
 424 static struct gpio_keys_button mini2440_buttons[] = {
 425         {
 426                 .gpio           = S3C2410_GPG(0),               /* K1 */
 427                 .code           = KEY_F1,
 428                 .desc           = "Button 1",
 429                 .active_low     = 1,
 430         },
 431         {
 432                 .gpio           = S3C2410_GPG(3),               /* K2 */
 433                 .code           = KEY_F2,
 434                 .desc           = "Button 2",
 435                 .active_low     = 1,
 436         },
 437         {
 438                 .gpio           = S3C2410_GPG(5),               /* K3 */
 439                 .code           = KEY_F3,
 440                 .desc           = "Button 3",
 441                 .active_low     = 1,
 442         },
 443         {
 444                 .gpio           = S3C2410_GPG(6),               /* K4 */
 445                 .code           = KEY_POWER,
 446                 .desc           = "Power",
 447                 .active_low     = 1,
 448         },
 449         {
 450                 .gpio           = S3C2410_GPG(7),               /* K5 */
 451                 .code           = KEY_F5,
 452                 .desc           = "Button 5",
 453                 .active_low     = 1,
 454         },
 455 #if 0
 456         /* this pin is also known as TCLK1 and seems to already
 457          * marked as "in use" somehow in the kernel -- possibly wrongly */
 458         {
 459                 .gpio           = S3C2410_GPG(11),      /* K6 */
 460                 .code           = KEY_F6,
 461                 .desc           = "Button 6",
 462                 .active_low     = 1,
 463         },
 464 #endif
 465 };
 466
 467 static struct gpio_keys_platform_data mini2440_button_data = {
 468         .buttons        = mini2440_buttons,
 469         .nbuttons       = ARRAY_SIZE(mini2440_buttons),
 470 };
 471
 472 static struct platform_device mini2440_button_device = {
 473         .name           = "gpio-keys",
 474         .id             = -1,
 475         .dev            = {
 476                 .platform_data  = &mini2440_button_data,
 477         }
 478 };
 479
 480 /* LEDS */
 481
 482 static struct s3c24xx_led_platdata mini2440_led1_pdata = {
 483         .name           = "led1",
 484         .gpio           = S3C2410_GPB(5),
 485         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
 486         .def_trigger    = "heartbeat",
 487 };
 488
 489 static struct s3c24xx_led_platdata mini2440_led2_pdata = {
 490         .name           = "led2",
 491         .gpio           = S3C2410_GPB(6),
 492         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
 493         .def_trigger    = "nand-disk",
 494 };
 495
 496 static struct s3c24xx_led_platdata mini2440_led3_pdata = {
 497         .name           = "led3",
 498         .gpio           = S3C2410_GPB(7),
 499         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
 500         .def_trigger    = "mmc0",
 501 };
 502
 503 static struct s3c24xx_led_platdata mini2440_led4_pdata = {
 504         .name           = "led4",
 505         .gpio           = S3C2410_GPB(8),
 506         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
 507         .def_trigger    = "",
 508 };
 509
 510 static struct s3c24xx_led_platdata mini2440_led_backlight_pdata = {
 511         .name           = "backlight",
 512         .gpio           = S3C2410_GPG(4),
 513         .flags          = S3C24XX_LEDF_STARTON,
 514         .def_trigger    = "backlight",
 515 };
 516
 517 static struct platform_device mini2440_led1 = {
 518         .name           = "s3c24xx_led",
 519         .id             = 1,
 520         .dev            = {
 521                 .platform_data  = &mini2440_led1_pdata,
 522         },
 523 };
 524
 525 static struct platform_device mini2440_led2 = {
 526         .name           = "s3c24xx_led",
 527         .id             = 2,
 528         .dev            = {
 529                 .platform_data  = &mini2440_led2_pdata,
 530         },
 531 };
 532
 533 static struct platform_device mini2440_led3 = {
 534         .name           = "s3c24xx_led",
 535         .id             = 3,
 536         .dev            = {
 537                 .platform_data  = &mini2440_led3_pdata,
 538         },
 539 };
 540
 541 static struct platform_device mini2440_led4 = {
 542         .name           = "s3c24xx_led",
 543         .id             = 4,
 544         .dev            = {
 545                 .platform_data  = &mini2440_led4_pdata,
 546         },
 547 };
 548
 549 static struct platform_device mini2440_led_backlight = {
 550         .name           = "s3c24xx_led",
 551         .id             = 5,
 552         .dev            = {
 553                 .platform_data  = &mini2440_led_backlight_pdata,
 554         },
 555 };
 556
 557 /* AUDIO */
 558
 559 static struct s3c24xx_uda134x_platform_data mini2440_audio_pins = {
 560         .l3_clk = S3C2410_GPB(4),
 561         .l3_mode = S3C2410_GPB(2),
 562         .l3_data = S3C2410_GPB(3),
 563         .model = UDA134X_UDA1341
 564 };
 565
 566 static struct platform_device mini2440_audio = {
 567         .name           = "s3c24xx_uda134x",
 568         .id             = 0,
 569         .dev            = {
 570                 .platform_data  = &mini2440_audio_pins,
 571         },
 572 };
 573
 574 /*
 575  * I2C devices
 576  */
 577 static struct at24_platform_data at24c08 = {
 578         .byte_len       = SZ_8K / 8,
 579         .page_size      = 16,
 580 };
 581
 582 static struct i2c_board_info mini2440_i2c_devs[] = {
 583         {
 584                 I2C_BOARD_INFO("24c08", 0x50),
 585                 .platform_data = &at24c08,
 586         },
 587 };
 588
 589 static struct platform_device *mini2440_devices[] = {
 590         &s3c_device_usb,
 591         &s3c_device_wdt,
 592 /*      &s3c_device_adc,*/ /* ADC doesn't like living with touchscreen ! */
 593         &s3c_device_i2c0,
 594         &s3c_device_rtc,
 595         &s3c_device_usbgadget,
 596         &mini2440_device_eth,
 597         &mini2440_led1,
 598         &mini2440_led2,
 599         &mini2440_led3,
 600         &mini2440_led4,
 601         &mini2440_button_device,
 602         &s3c_device_nand,
 603         &s3c_device_sdi,
 604         &s3c_device_iis,
 605         &mini2440_audio,
 606 /*      &s3c_device_timer[0],*/ /* buzzer pwm, no API for it */
 607         /* remaining devices are optional */
 608 };
 609
 610 static void __init mini2440_map_io(void)
 611 {
 612         s3c24xx_init_io(mini2440_iodesc, ARRAY_SIZE(mini2440_iodesc));
 613         s3c24xx_init_clocks(12000000);
 614         s3c24xx_init_uarts(mini2440_uartcfgs, ARRAY_SIZE(mini2440_uartcfgs));
 615
 616         s3c_device_nand.dev.platform_data = &mini2440_nand_info;
 617         s3c_device_sdi.dev.platform_data = &mini2440_mmc_cfg;
 618 }
 619
 620 /*
 621  * mini2440_features string
 622  *
 623  * t = Touchscreen present
 624  * b = backlight control
 625  * c = camera [TODO]
 626  * 0-9 LCD configuration
 627  *
 628  */
 629 static char mini2440_features_str[12] __initdata = "0tb";
 630
 631 static int __init mini2440_features_setup(char *str)
 632 {
 633         if (str)
 634                 strlcpy(mini2440_features_str, str, sizeof(mini2440_features_str));
 635         return 1;
 636 }
 637
 638 __setup("mini2440=", mini2440_features_setup);
 639
 640 #define FEATURE_SCREEN (1 << 0)
 641 #define FEATURE_BACKLIGHT (1 << 1)
 642 #define FEATURE_TOUCH (1 << 2)
 643 #define FEATURE_CAMERA (1 << 3)
 644
 645 struct mini2440_features_t {
 646         int count;
 647         int done;
 648         int lcd_index;
 649         struct platform_device *optional[8];
 650 };
 651
 652 static void mini2440_parse_features(
 653                 struct mini2440_features_t * features,
 654                 const char * features_str )
 655 {
 656         const char * fp = features_str;
 657
 658         features->count = 0;
 659         features->done = 0;
 660         features->lcd_index = -1;
 661
 662         while (*fp) {
 663                 char f = *fp++;
 664
 665                 switch (f) {
 666                 case '0'...'9': /* tft screen */
 667                         if (features->done & FEATURE_SCREEN) {
 668                                 printk(KERN_INFO "MINI2440: '%c' ignored, "
 669                                         "screen type already set\n", f);
 670                         } else {
 671                                 int li = f - '0';
 672                                 if (li >= ARRAY_SIZE(mini2440_lcd_cfg))
 673                                         printk(KERN_INFO "MINI2440: "
 674                                                 "'%c' out of range LCD mode\n", f);
 675                                 else {
 676                                         features->optional[features->count++] =
 677                                                         &s3c_device_lcd;
 678                                         features->lcd_index = li;
 679                                 }
 680                         }
 681                         features->done |= FEATURE_SCREEN;
 682                         break;
 683                 case 'b':
 684                         if (features->done & FEATURE_BACKLIGHT)
 685                                 printk(KERN_INFO "MINI2440: '%c' ignored, "
 686                                         "backlight already set\n", f);
 687                         else {
 688                                 features->optional[features->count++] =
 689                                                 &mini2440_led_backlight;
 690                         }
 691                         features->done |= FEATURE_BACKLIGHT;
 692                         break;
 693                 case 't':
 694 #ifdef CONFIG_TOUCHSCREEN_S3C2410
 695                         if (features->done & FEATURE_TOUCH)
 696                                 printk(KERN_INFO "MINI2440: '%c' ignored, "
 697                                         "touchscreen already set\n", f);
 698                         else
 699                                 features->optional[features->count++] =
 700                                                 &s3c_device_ts;
 701                         features->done |= FEATURE_TOUCH;
 702 #else
 703                                 printk(KERN_INFO "MINI2440: '%c' ignored, "
 704                                         "touchscreen not compiled in\n", f);
 705 #endif
 706                         break;
 707                 case 'c':
 708                         if (features->done & FEATURE_CAMERA)
 709                                 printk(KERN_INFO "MINI2440: '%c' ignored, "
 710                                         "camera already registered\n", f);
 711                         else
 712                                 features->optional[features->count++] =
 713                                         &s3c_device_camif;
 714                         features->done |= FEATURE_CAMERA;
 715                         break;
 716                 }
 717         }
 718 }
 719
 720 static void __init mini2440_init(void)
 721 {
 722         struct mini2440_features_t features = { 0 };
 723         int i;
 724
 725         printk(KERN_INFO "MINI2440: Option string mini2440=%s\n",
 726                         mini2440_features_str);
 727
 728         /* Parse the feature string */
 729         mini2440_parse_features(&features, mini2440_features_str);
 730
 731         /* turn LCD on */
 732         s3c2410_gpio_cfgpin(S3C2410_GPC(0), S3C2410_GPC0_LEND);
 733
 734         /* Turn the backlight early on */
 735         s3c2410_gpio_setpin(S3C2410_GPG(4), 1);
 736         s3c2410_gpio_cfgpin(S3C2410_GPG(4), S3C2410_GPIO_OUTPUT);
 737
 738         /* remove pullup on optional PWM backlight -- unused on 3.5 and 7"s */
 739         s3c2410_gpio_pullup(S3C2410_GPB(1), 0);
 740         s3c2410_gpio_setpin(S3C2410_GPB(1), 0);
 741         s3c2410_gpio_cfgpin(S3C2410_GPB(1), S3C2410_GPIO_INPUT);
 742
 743         /* Make sure the D+ pullup pin is output */
 744         s3c2410_gpio_cfgpin(S3C2410_GPC(5), S3C2410_GPIO_OUTPUT);
 745
 746         /* mark the key as input, without pullups (there is one on the board) */
 747         for (i = 0; i < ARRAY_SIZE(mini2440_buttons); i++) {
 748                 s3c2410_gpio_pullup(mini2440_buttons[i].gpio, 0);
 749                 s3c2410_gpio_cfgpin(mini2440_buttons[i].gpio,
 750                                         S3C2410_GPIO_INPUT);
 751         }
 752         if (features.lcd_index != -1) {
 753                 int li;
 754
 755                 mini2440_fb_info.displays =
 756                         &mini2440_lcd_cfg[features.lcd_index];
 757
 758                 printk(KERN_INFO "MINI2440: LCD");
 759                 for (li = 0; li < ARRAY_SIZE(mini2440_lcd_cfg); li++)
 760                         if (li == features.lcd_index)
 761                                 printk(" [%d:%dx%d]", li,
 762                                         mini2440_lcd_cfg[li].width,
 763                                         mini2440_lcd_cfg[li].height);
 764                         else
 765                                 printk(" %d:%dx%d", li,
 766                                         mini2440_lcd_cfg[li].width,
 767                                         mini2440_lcd_cfg[li].height);
 768                 printk("\n");
 769                 s3c24xx_fb_set_platdata(&mini2440_fb_info);
 770         }
 771         s3c24xx_udc_set_platdata(&mini2440_udc_cfg);
 772         s3c_i2c0_set_platdata(NULL);
 773         i2c_register_board_info(0, mini2440_i2c_devs,
 774                                 ARRAY_SIZE(mini2440_i2c_devs));
 775
 776 #ifdef CONFIG_TOUCHSCREEN_S3C2410
 777         if (features.done & FEATURE_TOUCH)
 778                 set_s3c2410ts_info(&mini2440_ts_cfg);
 779 #endif
 780
 781         platform_add_devices(mini2440_devices, ARRAY_SIZE(mini2440_devices));
 782
 783         if (features.count)     /* the optional features */
 784                 platform_add_devices(features.optional, features.count);
 785
 786 }
 787
 788
 789 MACHINE_START(MINI2440, "MINI2440")
 790         /* Maintainer: Michel Pollet <buserror@gmail.com> */
 791         .phys_io        = S3C2410_PA_UART,
 792         .io_pg_offst    = (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc,
 793         .boot_params    = S3C2410_SDRAM_PA + 0x100,
 794         .map_io         = mini2440_map_io,
 795         .init_machine   = mini2440_init,
 796         .init_irq       = s3c24xx_init_irq,
 797         .timer          = &s3c24xx_timer,
 798 MACHINE_END