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/clock.h>
  57 #include <plat/devs.h>
  58 #include <plat/cpu.h>
  59
  60 #include <sound/s3c24xx_uda134x.h>
  61
  62 #define MACH_MINI2440_DM9K_BASE (S3C2410_CS4 + 0x300)
  63
  64 static struct map_desc mini2440_iodesc[] __initdata = {
  65         /* nothing to declare, move along */
  66 };
  67
  68 #define UCON S3C2410_UCON_DEFAULT
  69 #define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
  70 #define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE
  71
  72
  73 static struct s3c2410_uartcfg mini2440_uartcfgs[] __initdata = {
  74         [0] = {
  75                 .hwport      = 0,
  76                 .flags       = 0,
  77                 .ucon        = UCON,
  78                 .ulcon       = ULCON,
  79                 .ufcon       = UFCON,
  80         },
  81         [1] = {
  82                 .hwport      = 1,
  83                 .flags       = 0,
  84                 .ucon        = UCON,
  85                 .ulcon       = ULCON,
  86                 .ufcon       = UFCON,
  87         },
  88         [2] = {
  89                 .hwport      = 2,
  90                 .flags       = 0,
  91                 .ucon        = UCON,
  92                 .ulcon       = ULCON,
  93                 .ufcon       = UFCON,
  94         },
  95 };
  96
  97 /* USB device UDC support */
  98
  99 static void mini2440_udc_pullup(enum s3c2410_udc_cmd_e cmd)
 100 {
 101         pr_debug("udc: pullup(%d)\n", cmd);
 102
 103         switch (cmd) {
 104                 case S3C2410_UDC_P_ENABLE :
 105                         s3c2410_gpio_setpin(S3C2410_GPC(5), 1);
 106                         break;
 107                 case S3C2410_UDC_P_DISABLE :
 108                         s3c2410_gpio_setpin(S3C2410_GPC(5), 0);
 109                         break;
 110                 case S3C2410_UDC_P_RESET :
 111                         break;
 112                 default:
 113                         break;
 114         }
 115 }
 116
 117 static struct s3c2410_udc_mach_info mini2440_udc_cfg __initdata = {
 118         .udc_command            = mini2440_udc_pullup,
 119 };
 120
 121
 122 /* LCD timing and setup */
 123
 124 /*
 125  * This macro simplifies the table bellow
 126  */
 127 #define _LCD_DECLARE(_clock,_xres,margin_left,margin_right,hsync, \
 128                         _yres,margin_top,margin_bottom,vsync, refresh) \
 129         .width = _xres, \
 130         .xres = _xres, \
 131         .height = _yres, \
 132         .yres = _yres, \
 133         .left_margin    = margin_left,  \
 134         .right_margin   = margin_right, \
 135         .upper_margin   = margin_top,   \
 136         .lower_margin   = margin_bottom,        \
 137         .hsync_len      = hsync,        \
 138         .vsync_len      = vsync,        \
 139         .pixclock       = ((_clock*100000000000LL) /    \
 140                            ((refresh) * \
 141                            (hsync + margin_left + _xres + margin_right) * \
 142                            (vsync + margin_top + _yres + margin_bottom))), \
 143         .bpp            = 16,\
 144         .type           = (S3C2410_LCDCON1_TFT16BPP |\
 145                            S3C2410_LCDCON1_TFT)
 146
 147 static struct s3c2410fb_display mini2440_lcd_cfg[] __initdata = {
 148         [0] = { /* mini2440 + 3.5" TFT + touchscreen - old model "N35" */
 149                 _LCD_DECLARE(
 150                         7,                      /* The 3.5 is quite fast */
 151                         240, 21, 38, 6,         /* x timing */
 152                         320, 4, 4, 2,           /* y timing */
 153                         60),                    /* refresh rate */
 154                 .lcdcon5        = (S3C2410_LCDCON5_FRM565 |
 155                                    S3C2410_LCDCON5_INVVLINE |
 156                                    S3C2410_LCDCON5_INVVFRAME |
 157                                    S3C2410_LCDCON5_INVVDEN |
 158                                    S3C2410_LCDCON5_PWREN),
 159         },
 160         [1] = { /* mini2440 + 7" TFT + touchscreen */
 161                 _LCD_DECLARE(
 162                         10,                     /* the 7" runs slower */
 163                         800, 40, 40, 48,        /* x timing */
 164                         480, 29, 3, 3,          /* y timing */
 165                         50),                    /* refresh rate */
 166                 .lcdcon5        = (S3C2410_LCDCON5_FRM565 |
 167                                    S3C2410_LCDCON5_INVVLINE |
 168                                    S3C2410_LCDCON5_INVVFRAME |
 169                                    S3C2410_LCDCON5_PWREN),
 170         },
 171         /* The VGA shield can outout at several resolutions. All share
 172          * the same timings, however, anything smaller than 1024x768
 173          * will only be displayed in the top left corner of a 1024x768
 174          * XGA output unless you add optional dip switches to the shield.
 175          * Therefore timings for other resolutions have been ommited here.
 176          */
 177         [2] = {
 178                 _LCD_DECLARE(
 179                         10,
 180                         1024, 1, 2, 2,          /* y timing */
 181                         768, 200, 16, 16,       /* x timing */
 182                         24),    /* refresh rate, maximum stable,
 183                                  tested with the FPGA shield */
 184                 .lcdcon5        = (S3C2410_LCDCON5_FRM565 |
 185                                    S3C2410_LCDCON5_HWSWP),
 186         },
 187
 188         [3] = { /* mini2440 + 3.5" TFT + TS -- New model as Nov 2009 "T35" */
 189                 _LCD_DECLARE(
 190                         7,                      /* The 3.5 is quite fast */
 191                         240, 21, 25, 6,         /* x timing */
 192                         320, 2, 4, 2,           /* y timing */
 193                         40),                    /* refresh rate */
 194                 .lcdcon5        = (S3C2410_LCDCON5_FRM565 |
 195                                    S3C2410_LCDCON5_INVVLINE |
 196                                    S3C2410_LCDCON5_INVVFRAME |
 197                                    S3C2410_LCDCON5_INVVDEN |
 198                                    S3C2410_LCDCON5_PWREN),
 199         },
 200         [4] = { /* mini2440 + 5.6" TFT + touchscreen -- Innolux AT056TN52 */
 201                 /* be sure the "power" jumper is set accordingly ! */
 202                 _LCD_DECLARE(
 203                         10,                     /* the 5.3" runs slower */
 204                         640, 41, 68, 22,        /* x timing */
 205                         480, 26, 6, 2,          /* y timing */
 206                         40),                    /* refresh rate */
 207                 .lcdcon5        = (S3C2410_LCDCON5_FRM565 |
 208                                    S3C2410_LCDCON5_INVVLINE |
 209                                    S3C2410_LCDCON5_INVVFRAME |
 210                                    S3C2410_LCDCON5_PWREN),
 211         },
 212 };
 213
 214 /* todo - put into gpio header */
 215
 216 #define S3C2410_GPCCON_MASK(x)  (3 << ((x) * 2))
 217 #define S3C2410_GPDCON_MASK(x)  (3 << ((x) * 2))
 218
 219 static struct s3c2410fb_mach_info mini2440_fb_info __initdata = {
 220         .displays        = &mini2440_lcd_cfg[0], /* not constant! see init */
 221         .num_displays    = 1,
 222         .default_display = 0,
 223
 224         /* Enable VD[2..7], VD[10..15], VD[18..23] and VCLK, syncs, VDEN
 225          * and disable the pull down resistors on pins we are using for LCD
 226          * data. */
 227
 228         .gpcup          = (0xf << 1) | (0x3f << 10),
 229
 230         .gpccon         = (S3C2410_GPC1_VCLK   | S3C2410_GPC2_VLINE |
 231                            S3C2410_GPC3_VFRAME | S3C2410_GPC4_VM |
 232                            S3C2410_GPC10_VD2   | S3C2410_GPC11_VD3 |
 233                            S3C2410_GPC12_VD4   | S3C2410_GPC13_VD5 |
 234                            S3C2410_GPC14_VD6   | S3C2410_GPC15_VD7),
 235
 236         .gpccon_mask    = (S3C2410_GPCCON_MASK(1)  | S3C2410_GPCCON_MASK(2)  |
 237                            S3C2410_GPCCON_MASK(3)  | S3C2410_GPCCON_MASK(4)  |
 238                            S3C2410_GPCCON_MASK(10) | S3C2410_GPCCON_MASK(11) |
 239                            S3C2410_GPCCON_MASK(12) | S3C2410_GPCCON_MASK(13) |
 240                            S3C2410_GPCCON_MASK(14) | S3C2410_GPCCON_MASK(15)),
 241
 242         .gpdup          = (0x3f << 2) | (0x3f << 10),
 243
 244         .gpdcon         = (S3C2410_GPD2_VD10  | S3C2410_GPD3_VD11 |
 245                            S3C2410_GPD4_VD12  | S3C2410_GPD5_VD13 |
 246                            S3C2410_GPD6_VD14  | S3C2410_GPD7_VD15 |
 247                            S3C2410_GPD10_VD18 | S3C2410_GPD11_VD19 |
 248                            S3C2410_GPD12_VD20 | S3C2410_GPD13_VD21 |
 249                            S3C2410_GPD14_VD22 | S3C2410_GPD15_VD23),
 250
 251         .gpdcon_mask    = (S3C2410_GPDCON_MASK(2)  | S3C2410_GPDCON_MASK(3) |
 252                            S3C2410_GPDCON_MASK(4)  | S3C2410_GPDCON_MASK(5) |
 253                            S3C2410_GPDCON_MASK(6)  | S3C2410_GPDCON_MASK(7) |
 254                            S3C2410_GPDCON_MASK(10) | S3C2410_GPDCON_MASK(11)|
 255                            S3C2410_GPDCON_MASK(12) | S3C2410_GPDCON_MASK(13)|
 256                            S3C2410_GPDCON_MASK(14) | S3C2410_GPDCON_MASK(15)),
 257 };
 258
 259 /* MMC/SD  */
 260
 261 static struct s3c24xx_mci_pdata mini2440_mmc_cfg __initdata = {
 262    .gpio_detect   = S3C2410_GPG(8),
 263    .gpio_wprotect = S3C2410_GPH(8),
 264    .set_power     = NULL,
 265    .ocr_avail     = MMC_VDD_32_33|MMC_VDD_33_34,
 266 };
 267
 268 /* NAND Flash on MINI2440 board */
 269
 270 static struct mtd_partition mini2440_default_nand_part[] __initdata = {
 271         [0] = {
 272                 .name   = "u-boot",
 273                 .size   = SZ_256K,
 274                 .offset = 0,
 275         },
 276         [1] = {
 277                 .name   = "u-boot-env",
 278                 .size   = SZ_128K,
 279                 .offset = SZ_256K,
 280         },
 281         [2] = {
 282                 .name   = "kernel",
 283                 /* 5 megabytes, for a kernel with no modules
 284                  * or a uImage with a ramdisk attached */
 285                 .size   = 0x00500000,
 286                 .offset = SZ_256K + SZ_128K,
 287         },
 288         [3] = {
 289                 .name   = "root",
 290                 .offset = SZ_256K + SZ_128K + 0x00500000,
 291                 .size   = MTDPART_SIZ_FULL,
 292         },
 293 };
 294
 295 static struct s3c2410_nand_set mini2440_nand_sets[] __initdata = {
 296         [0] = {
 297                 .name           = "nand",
 298                 .nr_chips       = 1,
 299                 .nr_partitions  = ARRAY_SIZE(mini2440_default_nand_part),
 300                 .partitions     = mini2440_default_nand_part,
 301                 .flash_bbt      = 1, /* we use u-boot to create a BBT */
 302         },
 303 };
 304
 305 static struct s3c2410_platform_nand mini2440_nand_info __initdata = {
 306         .tacls          = 0,
 307         .twrph0         = 25,
 308         .twrph1         = 15,
 309         .nr_sets        = ARRAY_SIZE(mini2440_nand_sets),
 310         .sets           = mini2440_nand_sets,
 311         .ignore_unset_ecc = 1,
 312 };
 313
 314 /* DM9000AEP 10/100 ethernet controller */
 315
 316 static struct resource mini2440_dm9k_resource[] __initdata = {
 317         [0] = {
 318                 .start = MACH_MINI2440_DM9K_BASE,
 319                 .end   = MACH_MINI2440_DM9K_BASE + 3,
 320                 .flags = IORESOURCE_MEM
 321         },
 322         [1] = {
 323                 .start = MACH_MINI2440_DM9K_BASE + 4,
 324                 .end   = MACH_MINI2440_DM9K_BASE + 7,
 325                 .flags = IORESOURCE_MEM
 326         },
 327         [2] = {
 328                 .start = IRQ_EINT7,
 329                 .end   = IRQ_EINT7,
 330                 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
 331         }
 332 };
 333
 334 /*
 335  * The DM9000 has no eeprom, and it's MAC address is set by
 336  * the bootloader before starting the kernel.
 337  */
 338 static struct dm9000_plat_data mini2440_dm9k_pdata __initdata = {
 339         .flags          = (DM9000_PLATF_16BITONLY | DM9000_PLATF_NO_EEPROM),
 340 };
 341
 342 static struct platform_device mini2440_device_eth __initdata = {
 343         .name           = "dm9000",
 344         .id             = -1,
 345         .num_resources  = ARRAY_SIZE(mini2440_dm9k_resource),
 346         .resource       = mini2440_dm9k_resource,
 347         .dev            = {
 348                 .platform_data  = &mini2440_dm9k_pdata,
 349         },
 350 };
 351
 352 /*  CON5
 353  *      +--+     /-----\
 354  *      |  |    |       |
 355  *      |  |    |  BAT  |
 356  *      |  |     \_____/
 357  *      |  |
 358  *      |  |  +----+  +----+
 359  *      |  |  | K5 |  | K1 |
 360  *      |  |  +----+  +----+
 361  *      |  |  +----+  +----+
 362  *      |  |  | K4 |  | K2 |
 363  *      |  |  +----+  +----+
 364  *      |  |  +----+  +----+
 365  *      |  |  | K6 |  | K3 |
 366  *      |  |  +----+  +----+
 367  *        .....
 368  */
 369 static struct gpio_keys_button mini2440_buttons[] __initdata = {
 370         {
 371                 .gpio           = S3C2410_GPG(0),               /* K1 */
 372                 .code           = KEY_F1,
 373                 .desc           = "Button 1",
 374                 .active_low     = 1,
 375         },
 376         {
 377                 .gpio           = S3C2410_GPG(3),               /* K2 */
 378                 .code           = KEY_F2,
 379                 .desc           = "Button 2",
 380                 .active_low     = 1,
 381         },
 382         {
 383                 .gpio           = S3C2410_GPG(5),               /* K3 */
 384                 .code           = KEY_F3,
 385                 .desc           = "Button 3",
 386                 .active_low     = 1,
 387         },
 388         {
 389                 .gpio           = S3C2410_GPG(6),               /* K4 */
 390                 .code           = KEY_POWER,
 391                 .desc           = "Power",
 392                 .active_low     = 1,
 393         },
 394         {
 395                 .gpio           = S3C2410_GPG(7),               /* K5 */
 396                 .code           = KEY_F5,
 397                 .desc           = "Button 5",
 398                 .active_low     = 1,
 399         },
 400 #if 0
 401         /* this pin is also known as TCLK1 and seems to already
 402          * marked as "in use" somehow in the kernel -- possibly wrongly */
 403         {
 404                 .gpio           = S3C2410_GPG(11),      /* K6 */
 405                 .code           = KEY_F6,
 406                 .desc           = "Button 6",
 407                 .active_low     = 1,
 408         },
 409 #endif
 410 };
 411
 412 static struct gpio_keys_platform_data mini2440_button_data __initdata = {
 413         .buttons        = mini2440_buttons,
 414         .nbuttons       = ARRAY_SIZE(mini2440_buttons),
 415 };
 416
 417 static struct platform_device mini2440_button_device __initdata = {
 418         .name           = "gpio-keys",
 419         .id             = -1,
 420         .dev            = {
 421                 .platform_data  = &mini2440_button_data,
 422         }
 423 };
 424
 425 /* LEDS */
 426
 427 static struct s3c24xx_led_platdata mini2440_led1_pdata __initdata = {
 428         .name           = "led1",
 429         .gpio           = S3C2410_GPB(5),
 430         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
 431         .def_trigger    = "heartbeat",
 432 };
 433
 434 static struct s3c24xx_led_platdata mini2440_led2_pdata __initdata = {
 435         .name           = "led2",
 436         .gpio           = S3C2410_GPB(6),
 437         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
 438         .def_trigger    = "nand-disk",
 439 };
 440
 441 static struct s3c24xx_led_platdata mini2440_led3_pdata __initdata = {
 442         .name           = "led3",
 443         .gpio           = S3C2410_GPB(7),
 444         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
 445         .def_trigger    = "mmc0",
 446 };
 447
 448 static struct s3c24xx_led_platdata mini2440_led4_pdata __initdata = {
 449         .name           = "led4",
 450         .gpio           = S3C2410_GPB(8),
 451         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
 452         .def_trigger    = "",
 453 };
 454
 455 static struct s3c24xx_led_platdata mini2440_led_backlight_pdata __initdata = {
 456         .name           = "backlight",
 457         .gpio           = S3C2410_GPG(4),
 458         .flags          = S3C24XX_LEDF_STARTON,
 459         .def_trigger    = "backlight",
 460 };
 461
 462 static struct platform_device mini2440_led1 __initdata = {
 463         .name           = "s3c24xx_led",
 464         .id             = 1,
 465         .dev            = {
 466                 .platform_data  = &mini2440_led1_pdata,
 467         },
 468 };
 469
 470 static struct platform_device mini2440_led2 __initdata = {
 471         .name           = "s3c24xx_led",
 472         .id             = 2,
 473         .dev            = {
 474                 .platform_data  = &mini2440_led2_pdata,
 475         },
 476 };
 477
 478 static struct platform_device mini2440_led3 __initdata = {
 479         .name           = "s3c24xx_led",
 480         .id             = 3,
 481         .dev            = {
 482                 .platform_data  = &mini2440_led3_pdata,
 483         },
 484 };
 485
 486 static struct platform_device mini2440_led4 __initdata = {
 487         .name           = "s3c24xx_led",
 488         .id             = 4,
 489         .dev            = {
 490                 .platform_data  = &mini2440_led4_pdata,
 491         },
 492 };
 493
 494 static struct platform_device mini2440_led_backlight __initdata = {
 495         .name           = "s3c24xx_led",
 496         .id             = 5,
 497         .dev            = {
 498                 .platform_data  = &mini2440_led_backlight_pdata,
 499         },
 500 };
 501
 502 /* AUDIO */
 503
 504 static struct s3c24xx_uda134x_platform_data mini2440_audio_pins __initdata = {
 505         .l3_clk = S3C2410_GPB(4),
 506         .l3_mode = S3C2410_GPB(2),
 507         .l3_data = S3C2410_GPB(3),
 508         .model = UDA134X_UDA1341
 509 };
 510
 511 static struct platform_device mini2440_audio __initdata = {
 512         .name           = "s3c24xx_uda134x",
 513         .id             = 0,
 514         .dev            = {
 515                 .platform_data  = &mini2440_audio_pins,
 516         },
 517 };
 518
 519 /*
 520  * I2C devices
 521  */
 522 static struct at24_platform_data at24c08 = {
 523         .byte_len       = SZ_8K / 8,
 524         .page_size      = 16,
 525 };
 526
 527 static struct i2c_board_info mini2440_i2c_devs[] __initdata = {
 528         {
 529                 I2C_BOARD_INFO("24c08", 0x50),
 530                 .platform_data = &at24c08,
 531         },
 532 };
 533
 534 static struct platform_device *mini2440_devices[] __initdata = {
 535         &s3c_device_usb,
 536         &s3c_device_wdt,
 537 /*      &s3c_device_adc,*/ /* ADC doesn't like living with touchscreen ! */
 538         &s3c_device_i2c0,
 539         &s3c_device_rtc,
 540         &s3c_device_usbgadget,
 541         &mini2440_device_eth,
 542         &mini2440_led1,
 543         &mini2440_led2,
 544         &mini2440_led3,
 545         &mini2440_led4,
 546         &mini2440_button_device,
 547         &s3c_device_nand,
 548         &s3c_device_sdi,
 549         &s3c_device_iis,
 550         &mini2440_audio,
 551 /*      &s3c_device_timer[0],*/ /* buzzer pwm, no API for it */
 552         /* remaining devices are optional */
 553 };
 554
 555 static void __init mini2440_map_io(void)
 556 {
 557         s3c24xx_init_io(mini2440_iodesc, ARRAY_SIZE(mini2440_iodesc));
 558         s3c24xx_init_clocks(12000000);
 559         s3c24xx_init_uarts(mini2440_uartcfgs, ARRAY_SIZE(mini2440_uartcfgs));
 560
 561         s3c_device_nand.dev.platform_data = &mini2440_nand_info;
 562         s3c_device_sdi.dev.platform_data = &mini2440_mmc_cfg;
 563 }
 564
 565 /*
 566  * mini2440_features string
 567  *
 568  * t = Touchscreen present
 569  * b = backlight control
 570  * c = camera [TODO]
 571  * 0-9 LCD configuration
 572  *
 573  */
 574 static char mini2440_features_str[12] __initdata = "0tb";
 575
 576 static int __init mini2440_features_setup(char *str)
 577 {
 578         if (str)
 579                 strlcpy(mini2440_features_str, str, sizeof(mini2440_features_str));
 580         return 1;
 581 }
 582
 583 __setup("mini2440=", mini2440_features_setup);
 584
 585 #define FEATURE_SCREEN (1 << 0)
 586 #define FEATURE_BACKLIGHT (1 << 1)
 587 #define FEATURE_TOUCH (1 << 2)
 588 #define FEATURE_CAMERA (1 << 3)
 589
 590 struct mini2440_features_t {
 591         int count;
 592         int done;
 593         int lcd_index;
 594         struct platform_device *optional[8];
 595 };
 596
 597 static void mini2440_parse_features(
 598                 struct mini2440_features_t * features,
 599                 const char * features_str )
 600 {
 601         const char * fp = features_str;
 602
 603         features->count = 0;
 604         features->done = 0;
 605         features->lcd_index = -1;
 606
 607         while (*fp) {
 608                 char f = *fp++;
 609
 610                 switch (f) {
 611                 case '0'...'9': /* tft screen */
 612                         if (features->done & FEATURE_SCREEN) {
 613                                 printk(KERN_INFO "MINI2440: '%c' ignored, "
 614                                         "screen type already set\n", f);
 615                         } else {
 616                                 int li = f - '0';
 617                                 if (li >= ARRAY_SIZE(mini2440_lcd_cfg))
 618                                         printk(KERN_INFO "MINI2440: "
 619                                                 "'%c' out of range LCD mode\n", f);
 620                                 else {
 621                                         features->optional[features->count++] =
 622                                                         &s3c_device_lcd;
 623                                         features->lcd_index = li;
 624                                 }
 625                         }
 626                         features->done |= FEATURE_SCREEN;
 627                         break;
 628                 case 'b':
 629                         if (features->done & FEATURE_BACKLIGHT)
 630                                 printk(KERN_INFO "MINI2440: '%c' ignored, "
 631                                         "backlight already set\n", f);
 632                         else {
 633                                 features->optional[features->count++] =
 634                                                 &mini2440_led_backlight;
 635                         }
 636                         features->done |= FEATURE_BACKLIGHT;
 637                         break;
 638                 case 't':
 639                         printk(KERN_INFO "MINI2440: '%c' ignored, "
 640                                 "touchscreen not compiled in\n", f);
 641                         break;
 642                 case 'c':
 643                         if (features->done & FEATURE_CAMERA)
 644                                 printk(KERN_INFO "MINI2440: '%c' ignored, "
 645                                         "camera already registered\n", f);
 646                         else
 647                                 features->optional[features->count++] =
 648                                         &s3c_device_camif;
 649                         features->done |= FEATURE_CAMERA;
 650                         break;
 651                 }
 652         }
 653 }
 654
 655 static void __init mini2440_init(void)
 656 {
 657         struct mini2440_features_t features = { 0 };
 658         int i;
 659
 660         printk(KERN_INFO "MINI2440: Option string mini2440=%s\n",
 661                         mini2440_features_str);
 662
 663         /* Parse the feature string */
 664         mini2440_parse_features(&features, mini2440_features_str);
 665
 666         /* turn LCD on */
 667         s3c2410_gpio_cfgpin(S3C2410_GPC(0), S3C2410_GPC0_LEND);
 668
 669         /* Turn the backlight early on */
 670         s3c2410_gpio_setpin(S3C2410_GPG(4), 1);
 671         s3c2410_gpio_cfgpin(S3C2410_GPG(4), S3C2410_GPIO_OUTPUT);
 672
 673         /* remove pullup on optional PWM backlight -- unused on 3.5 and 7"s */
 674         s3c2410_gpio_pullup(S3C2410_GPB(1), 0);
 675         s3c2410_gpio_setpin(S3C2410_GPB(1), 0);
 676         s3c2410_gpio_cfgpin(S3C2410_GPB(1), S3C2410_GPIO_INPUT);
 677
 678         /* Make sure the D+ pullup pin is output */
 679         s3c2410_gpio_cfgpin(S3C2410_GPC(5), S3C2410_GPIO_OUTPUT);
 680
 681         /* mark the key as input, without pullups (there is one on the board) */
 682         for (i = 0; i < ARRAY_SIZE(mini2440_buttons); i++) {
 683                 s3c2410_gpio_pullup(mini2440_buttons[i].gpio, 0);
 684                 s3c2410_gpio_cfgpin(mini2440_buttons[i].gpio,
 685                                         S3C2410_GPIO_INPUT);
 686         }
 687         if (features.lcd_index != -1) {
 688                 int li;
 689
 690                 mini2440_fb_info.displays =
 691                         &mini2440_lcd_cfg[features.lcd_index];
 692
 693                 printk(KERN_INFO "MINI2440: LCD");
 694                 for (li = 0; li < ARRAY_SIZE(mini2440_lcd_cfg); li++)
 695                         if (li == features.lcd_index)
 696                                 printk(" [%d:%dx%d]", li,
 697                                         mini2440_lcd_cfg[li].width,
 698                                         mini2440_lcd_cfg[li].height);
 699                         else
 700                                 printk(" %d:%dx%d", li,
 701                                         mini2440_lcd_cfg[li].width,
 702                                         mini2440_lcd_cfg[li].height);
 703                 printk("\n");
 704                 s3c24xx_fb_set_platdata(&mini2440_fb_info);
 705         }
 706         s3c24xx_udc_set_platdata(&mini2440_udc_cfg);
 707         s3c_i2c0_set_platdata(NULL);
 708         i2c_register_board_info(0, mini2440_i2c_devs,
 709                                 ARRAY_SIZE(mini2440_i2c_devs));
 710
 711         platform_add_devices(mini2440_devices, ARRAY_SIZE(mini2440_devices));
 712
 713         if (features.count)     /* the optional features */
 714                 platform_add_devices(features.optional, features.count);
 715
 716 }
 717
 718
 719 MACHINE_START(MINI2440, "MINI2440")
 720         /* Maintainer: Michel Pollet <buserror@gmail.com> */
 721         .phys_io        = S3C2410_PA_UART,
 722         .io_pg_offst    = (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc,
 723         .boot_params    = S3C2410_SDRAM_PA + 0x100,
 724         .map_io         = mini2440_map_io,
 725         .init_machine   = mini2440_init,
 726         .init_irq       = s3c24xx_init_irq,
 727         .timer          = &s3c24xx_timer,
 728 MACHINE_END