arch/arm/mach-s3c24xx/mach-mini2440.c

   1 // SPDX-License-Identifier: GPL-2.0
   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 #include <linux/kernel.h>
  12 #include <linux/types.h>
  13 #include <linux/interrupt.h>
  14 #include <linux/list.h>
  15 #include <linux/timer.h>
  16 #include <linux/init.h>
  17 #include <linux/gpio.h>
  18 #include <linux/gpio/machine.h>
  19 #include <linux/input.h>
  20 #include <linux/io.h>
  21 #include <linux/serial_core.h>
  22 #include <linux/serial_s3c.h>
  23 #include <linux/dm9000.h>
  24 #include <linux/property.h>
  25 #include <linux/platform_device.h>
  26 #include <linux/gpio_keys.h>
  27 #include <linux/i2c.h>
  28 #include <linux/mmc/host.h>
  29
  30 #include <asm/mach/arch.h>
  31 #include <asm/mach/map.h>
  32
  33 #include <mach/hardware.h>
  34 #include <mach/fb.h>
  35 #include <asm/mach-types.h>
  36
  37 #include <mach/regs-gpio.h>
  38 #include <linux/platform_data/leds-s3c24xx.h>
  39 #include <mach/regs-lcd.h>
  40 #include <mach/irqs.h>
  41 #include <mach/gpio-samsung.h>
  42 #include <linux/platform_data/mtd-nand-s3c2410.h>
  43 #include <linux/platform_data/i2c-s3c2410.h>
  44 #include <linux/platform_data/mmc-s3cmci.h>
  45 #include <linux/platform_data/usb-s3c2410_udc.h>
  46
  47 #include <linux/mtd/mtd.h>
  48 #include <linux/mtd/rawnand.h>
  49 #include <linux/mtd/nand_ecc.h>
  50 #include <linux/mtd/partitions.h>
  51
  52 #include <plat/gpio-cfg.h>
  53 #include <plat/devs.h>
  54 #include <plat/cpu.h>
  55 #include <plat/samsung-time.h>
  56
  57 #include <sound/s3c24xx_uda134x.h>
  58
  59 #include "common.h"
  60
  61 #define MACH_MINI2440_DM9K_BASE (S3C2410_CS4 + 0x300)
  62
  63 static struct map_desc mini2440_iodesc[] __initdata = {
  64         /* nothing to declare, move along */
  65 };
  66
  67 #define UCON S3C2410_UCON_DEFAULT
  68 #define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB)
  69 #define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)
  70
  71
  72 static struct s3c2410_uartcfg mini2440_uartcfgs[] __initdata = {
  73         [0] = {
  74                 .hwport         = 0,
  75                 .flags          = 0,
  76                 .ucon           = UCON,
  77                 .ulcon          = ULCON,
  78                 .ufcon          = UFCON,
  79         },
  80         [1] = {
  81                 .hwport         = 1,
  82                 .flags          = 0,
  83                 .ucon           = UCON,
  84                 .ulcon          = ULCON,
  85                 .ufcon          = UFCON,
  86         },
  87         [2] = {
  88                 .hwport         = 2,
  89                 .flags          = 0,
  90                 .ucon           = UCON,
  91                 .ulcon          = ULCON,
  92                 .ufcon          = UFCON,
  93         },
  94 };
  95
  96 /* USB device UDC support */
  97
  98 static struct s3c2410_udc_mach_info mini2440_udc_cfg __initdata = {
  99         .pullup_pin = S3C2410_GPC(5),
 100 };
 101
 102
 103 /* LCD timing and setup */
 104
 105 /*
 106  * This macro simplifies the table bellow
 107  */
 108 #define _LCD_DECLARE(_clock, _xres, margin_left, margin_right, hsync, \
 109                         _yres, margin_top, margin_bottom, vsync, refresh) \
 110         .width = _xres, \
 111         .xres = _xres, \
 112         .height = _yres, \
 113         .yres = _yres, \
 114         .left_margin    = margin_left,  \
 115         .right_margin   = margin_right, \
 116         .upper_margin   = margin_top,   \
 117         .lower_margin   = margin_bottom,        \
 118         .hsync_len      = hsync,        \
 119         .vsync_len      = vsync,        \
 120         .pixclock       = ((_clock*100000000000LL) /    \
 121                            ((refresh) * \
 122                            (hsync + margin_left + _xres + margin_right) * \
 123                            (vsync + margin_top + _yres + margin_bottom))), \
 124         .bpp            = 16,\
 125         .type           = (S3C2410_LCDCON1_TFT16BPP |\
 126                            S3C2410_LCDCON1_TFT)
 127
 128 static struct s3c2410fb_display mini2440_lcd_cfg[] __initdata = {
 129         [0] = { /* mini2440 + 3.5" TFT + touchscreen */
 130                 _LCD_DECLARE(
 131                         7,                      /* The 3.5 is quite fast */
 132                         240, 21, 38, 6,         /* x timing */
 133                         320, 4, 4, 2,           /* y timing */
 134                         60),                    /* refresh rate */
 135                 .lcdcon5        = (S3C2410_LCDCON5_FRM565 |
 136                                    S3C2410_LCDCON5_INVVLINE |
 137                                    S3C2410_LCDCON5_INVVFRAME |
 138                                    S3C2410_LCDCON5_INVVDEN |
 139                                    S3C2410_LCDCON5_PWREN),
 140         },
 141         [1] = { /* mini2440 + 7" TFT + touchscreen */
 142                 _LCD_DECLARE(
 143                         10,                     /* the 7" runs slower */
 144                         800, 40, 40, 48,        /* x timing */
 145                         480, 29, 3, 3,          /* y timing */
 146                         50),                    /* refresh rate */
 147                 .lcdcon5        = (S3C2410_LCDCON5_FRM565 |
 148                                    S3C2410_LCDCON5_INVVLINE |
 149                                    S3C2410_LCDCON5_INVVFRAME |
 150                                    S3C2410_LCDCON5_PWREN),
 151         },
 152         /* The VGA shield can outout at several resolutions. All share
 153          * the same timings, however, anything smaller than 1024x768
 154          * will only be displayed in the top left corner of a 1024x768
 155          * XGA output unless you add optional dip switches to the shield.
 156          * Therefore timings for other resolutions have been omitted here.
 157          */
 158         [2] = {
 159                 _LCD_DECLARE(
 160                         10,
 161                         1024, 1, 2, 2,          /* y timing */
 162                         768, 200, 16, 16,       /* x timing */
 163                         24),    /* refresh rate, maximum stable,
 164                                  * tested with the FPGA shield
 165                                  */
 166                 .lcdcon5        = (S3C2410_LCDCON5_FRM565 |
 167                                    S3C2410_LCDCON5_HWSWP),
 168         },
 169         /* mini2440 + 3.5" TFT (LCD-W35i, LQ035Q1DG06 type) + touchscreen*/
 170         [3] = {
 171                 _LCD_DECLARE(
 172                         /* clock */
 173                         7,
 174                         /* xres, margin_right, margin_left, hsync */
 175                         320, 68, 66, 4,
 176                         /* yres, margin_top, margin_bottom, vsync */
 177                         240, 4, 4, 9,
 178                         /* refresh rate */
 179                         60),
 180                 .lcdcon5        = (S3C2410_LCDCON5_FRM565 |
 181                                    S3C2410_LCDCON5_INVVDEN |
 182                                    S3C2410_LCDCON5_INVVFRAME |
 183                                    S3C2410_LCDCON5_INVVLINE |
 184                                    S3C2410_LCDCON5_INVVCLK |
 185                                    S3C2410_LCDCON5_HWSWP),
 186         },
 187 };
 188
 189 /* todo - put into gpio header */
 190
 191 #define S3C2410_GPCCON_MASK(x)  (3 << ((x) * 2))
 192 #define S3C2410_GPDCON_MASK(x)  (3 << ((x) * 2))
 193
 194 static struct s3c2410fb_mach_info mini2440_fb_info __initdata = {
 195         .displays        = &mini2440_lcd_cfg[0], /* not constant! see init */
 196         .num_displays    = 1,
 197         .default_display = 0,
 198
 199         /* Enable VD[2..7], VD[10..15], VD[18..23] and VCLK, syncs, VDEN
 200          * and disable the pull down resistors on pins we are using for LCD
 201          * data.
 202          */
 203
 204         .gpcup          = (0xf << 1) | (0x3f << 10),
 205
 206         .gpccon         = (S3C2410_GPC1_VCLK   | S3C2410_GPC2_VLINE |
 207                            S3C2410_GPC3_VFRAME | S3C2410_GPC4_VM |
 208                            S3C2410_GPC10_VD2   | S3C2410_GPC11_VD3 |
 209                            S3C2410_GPC12_VD4   | S3C2410_GPC13_VD5 |
 210                            S3C2410_GPC14_VD6   | S3C2410_GPC15_VD7),
 211
 212         .gpccon_mask    = (S3C2410_GPCCON_MASK(1)  | S3C2410_GPCCON_MASK(2)  |
 213                            S3C2410_GPCCON_MASK(3)  | S3C2410_GPCCON_MASK(4)  |
 214                            S3C2410_GPCCON_MASK(10) | S3C2410_GPCCON_MASK(11) |
 215                            S3C2410_GPCCON_MASK(12) | S3C2410_GPCCON_MASK(13) |
 216                            S3C2410_GPCCON_MASK(14) | S3C2410_GPCCON_MASK(15)),
 217
 218         .gpdup          = (0x3f << 2) | (0x3f << 10),
 219
 220         .gpdcon         = (S3C2410_GPD2_VD10  | S3C2410_GPD3_VD11 |
 221                            S3C2410_GPD4_VD12  | S3C2410_GPD5_VD13 |
 222                            S3C2410_GPD6_VD14  | S3C2410_GPD7_VD15 |
 223                            S3C2410_GPD10_VD18 | S3C2410_GPD11_VD19 |
 224                            S3C2410_GPD12_VD20 | S3C2410_GPD13_VD21 |
 225                            S3C2410_GPD14_VD22 | S3C2410_GPD15_VD23),
 226
 227         .gpdcon_mask    = (S3C2410_GPDCON_MASK(2)  | S3C2410_GPDCON_MASK(3) |
 228                            S3C2410_GPDCON_MASK(4)  | S3C2410_GPDCON_MASK(5) |
 229                            S3C2410_GPDCON_MASK(6)  | S3C2410_GPDCON_MASK(7) |
 230                            S3C2410_GPDCON_MASK(10) | S3C2410_GPDCON_MASK(11)|
 231                            S3C2410_GPDCON_MASK(12) | S3C2410_GPDCON_MASK(13)|
 232                            S3C2410_GPDCON_MASK(14) | S3C2410_GPDCON_MASK(15)),
 233 };
 234
 235 /* MMC/SD  */
 236
 237 static struct s3c24xx_mci_pdata mini2440_mmc_cfg __initdata = {
 238         .wprotect_invert        = 1,
 239         .set_power              = NULL,
 240         .ocr_avail              = MMC_VDD_32_33|MMC_VDD_33_34,
 241 };
 242
 243 static struct gpiod_lookup_table mini2440_mmc_gpio_table = {
 244         .dev_id = "s3c2410-sdi",
 245         .table = {
 246                 /* Card detect S3C2410_GPG(8) */
 247                 GPIO_LOOKUP("GPG", 8, "cd", GPIO_ACTIVE_LOW),
 248                 /* Write protect S3C2410_GPH(8) */
 249                 GPIO_LOOKUP("GPH", 8, "wp", GPIO_ACTIVE_HIGH),
 250                 { },
 251         },
 252 };
 253
 254 /* NAND Flash on MINI2440 board */
 255
 256 static struct mtd_partition mini2440_default_nand_part[] __initdata = {
 257         [0] = {
 258                 .name   = "u-boot",
 259                 .size   = SZ_256K,
 260                 .offset = 0,
 261         },
 262         [1] = {
 263                 .name   = "u-boot-env",
 264                 .size   = SZ_128K,
 265                 .offset = SZ_256K,
 266         },
 267         [2] = {
 268                 .name   = "kernel",
 269                 /* 5 megabytes, for a kernel with no modules
 270                  * or a uImage with a ramdisk attached
 271                  */
 272                 .size   = 0x00500000,
 273                 .offset = SZ_256K + SZ_128K,
 274         },
 275         [3] = {
 276                 .name   = "root",
 277                 .offset = SZ_256K + SZ_128K + 0x00500000,
 278                 .size   = MTDPART_SIZ_FULL,
 279         },
 280 };
 281
 282 static struct s3c2410_nand_set mini2440_nand_sets[] __initdata = {
 283         [0] = {
 284                 .name           = "nand",
 285                 .nr_chips       = 1,
 286                 .nr_partitions  = ARRAY_SIZE(mini2440_default_nand_part),
 287                 .partitions     = mini2440_default_nand_part,
 288                 .flash_bbt      = 1, /* we use u-boot to create a BBT */
 289         },
 290 };
 291
 292 static struct s3c2410_platform_nand mini2440_nand_info __initdata = {
 293         .tacls          = 0,
 294         .twrph0         = 25,
 295         .twrph1         = 15,
 296         .nr_sets        = ARRAY_SIZE(mini2440_nand_sets),
 297         .sets           = mini2440_nand_sets,
 298         .ignore_unset_ecc = 1,
 299         .ecc_mode       = NAND_ECC_HW,
 300 };
 301
 302 /* DM9000AEP 10/100 ethernet controller */
 303
 304 static struct resource mini2440_dm9k_resource[] = {
 305         [0] = DEFINE_RES_MEM(MACH_MINI2440_DM9K_BASE, 4),
 306         [1] = DEFINE_RES_MEM(MACH_MINI2440_DM9K_BASE + 4, 4),
 307         [2] = DEFINE_RES_NAMED(IRQ_EINT7, 1, NULL, IORESOURCE_IRQ
 308                                                 | IORESOURCE_IRQ_HIGHEDGE),
 309 };
 310
 311 /*
 312  * The DM9000 has no eeprom, and it's MAC address is set by
 313  * the bootloader before starting the kernel.
 314  */
 315 static struct dm9000_plat_data mini2440_dm9k_pdata = {
 316         .flags          = (DM9000_PLATF_16BITONLY | DM9000_PLATF_NO_EEPROM),
 317 };
 318
 319 static struct platform_device mini2440_device_eth = {
 320         .name           = "dm9000",
 321         .id             = -1,
 322         .num_resources  = ARRAY_SIZE(mini2440_dm9k_resource),
 323         .resource       = mini2440_dm9k_resource,
 324         .dev            = {
 325                 .platform_data  = &mini2440_dm9k_pdata,
 326         },
 327 };
 328
 329 /*  CON5
 330  *      +--+     /-----\
 331  *      |  |    |       |
 332  *      |  |    |  BAT  |
 333  *      |  |     \_____/
 334  *      |  |
 335  *      |  |  +----+  +----+
 336  *      |  |  | K5 |  | K1 |
 337  *      |  |  +----+  +----+
 338  *      |  |  +----+  +----+
 339  *      |  |  | K4 |  | K2 |
 340  *      |  |  +----+  +----+
 341  *      |  |  +----+  +----+
 342  *      |  |  | K6 |  | K3 |
 343  *      |  |  +----+  +----+
 344  *        .....
 345  */
 346 static struct gpio_keys_button mini2440_buttons[] = {
 347         {
 348                 .gpio           = S3C2410_GPG(0),               /* K1 */
 349                 .code           = KEY_F1,
 350                 .desc           = "Button 1",
 351                 .active_low     = 1,
 352         },
 353         {
 354                 .gpio           = S3C2410_GPG(3),               /* K2 */
 355                 .code           = KEY_F2,
 356                 .desc           = "Button 2",
 357                 .active_low     = 1,
 358         },
 359         {
 360                 .gpio           = S3C2410_GPG(5),               /* K3 */
 361                 .code           = KEY_F3,
 362                 .desc           = "Button 3",
 363                 .active_low     = 1,
 364         },
 365         {
 366                 .gpio           = S3C2410_GPG(6),               /* K4 */
 367                 .code           = KEY_POWER,
 368                 .desc           = "Power",
 369                 .active_low     = 1,
 370         },
 371         {
 372                 .gpio           = S3C2410_GPG(7),               /* K5 */
 373                 .code           = KEY_F5,
 374                 .desc           = "Button 5",
 375                 .active_low     = 1,
 376         },
 377 #if 0
 378         /* this pin is also known as TCLK1 and seems to already
 379          * marked as "in use" somehow in the kernel -- possibly wrongly
 380          */
 381         {
 382                 .gpio           = S3C2410_GPG(11),      /* K6 */
 383                 .code           = KEY_F6,
 384                 .desc           = "Button 6",
 385                 .active_low     = 1,
 386         },
 387 #endif
 388 };
 389
 390 static struct gpio_keys_platform_data mini2440_button_data = {
 391         .buttons        = mini2440_buttons,
 392         .nbuttons       = ARRAY_SIZE(mini2440_buttons),
 393 };
 394
 395 static struct platform_device mini2440_button_device = {
 396         .name           = "gpio-keys",
 397         .id             = -1,
 398         .dev            = {
 399                 .platform_data  = &mini2440_button_data,
 400         }
 401 };
 402
 403 /* LEDS */
 404
 405 static struct s3c24xx_led_platdata mini2440_led1_pdata = {
 406         .name           = "led1",
 407         .gpio           = S3C2410_GPB(5),
 408         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
 409         .def_trigger    = "heartbeat",
 410 };
 411
 412 static struct s3c24xx_led_platdata mini2440_led2_pdata = {
 413         .name           = "led2",
 414         .gpio           = S3C2410_GPB(6),
 415         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
 416         .def_trigger    = "nand-disk",
 417 };
 418
 419 static struct s3c24xx_led_platdata mini2440_led3_pdata = {
 420         .name           = "led3",
 421         .gpio           = S3C2410_GPB(7),
 422         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
 423         .def_trigger    = "mmc0",
 424 };
 425
 426 static struct s3c24xx_led_platdata mini2440_led4_pdata = {
 427         .name           = "led4",
 428         .gpio           = S3C2410_GPB(8),
 429         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
 430         .def_trigger    = "",
 431 };
 432
 433 static struct s3c24xx_led_platdata mini2440_led_backlight_pdata = {
 434         .name           = "backlight",
 435         .gpio           = S3C2410_GPG(4),
 436         .def_trigger    = "backlight",
 437 };
 438
 439 static struct platform_device mini2440_led1 = {
 440         .name           = "s3c24xx_led",
 441         .id             = 1,
 442         .dev            = {
 443                 .platform_data  = &mini2440_led1_pdata,
 444         },
 445 };
 446
 447 static struct platform_device mini2440_led2 = {
 448         .name           = "s3c24xx_led",
 449         .id             = 2,
 450         .dev            = {
 451                 .platform_data  = &mini2440_led2_pdata,
 452         },
 453 };
 454
 455 static struct platform_device mini2440_led3 = {
 456         .name           = "s3c24xx_led",
 457         .id             = 3,
 458         .dev            = {
 459                 .platform_data  = &mini2440_led3_pdata,
 460         },
 461 };
 462
 463 static struct platform_device mini2440_led4 = {
 464         .name           = "s3c24xx_led",
 465         .id             = 4,
 466         .dev            = {
 467                 .platform_data  = &mini2440_led4_pdata,
 468         },
 469 };
 470
 471 static struct platform_device mini2440_led_backlight = {
 472         .name           = "s3c24xx_led",
 473         .id             = 5,
 474         .dev            = {
 475                 .platform_data  = &mini2440_led_backlight_pdata,
 476         },
 477 };
 478
 479 /* AUDIO */
 480
 481 static struct s3c24xx_uda134x_platform_data mini2440_audio_pins = {
 482         .l3_clk = S3C2410_GPB(4),
 483         .l3_mode = S3C2410_GPB(2),
 484         .l3_data = S3C2410_GPB(3),
 485         .model = UDA134X_UDA1341
 486 };
 487
 488 static struct platform_device mini2440_audio = {
 489         .name           = "s3c24xx_uda134x",
 490         .id             = 0,
 491         .dev            = {
 492                 .platform_data  = &mini2440_audio_pins,
 493         },
 494 };
 495
 496 /*
 497  * I2C devices
 498  */
 499 static const struct property_entry mini2440_at24_properties[] = {
 500         PROPERTY_ENTRY_U32("pagesize", 16),
 501         { }
 502 };
 503
 504 static struct i2c_board_info mini2440_i2c_devs[] __initdata = {
 505         {
 506                 I2C_BOARD_INFO("24c08", 0x50),
 507                 .properties = mini2440_at24_properties,
 508         },
 509 };
 510
 511 static struct uda134x_platform_data s3c24xx_uda134x = {
 512         .l3 = {
 513                 .gpio_clk = S3C2410_GPB(4),
 514                 .gpio_data = S3C2410_GPB(3),
 515                 .gpio_mode = S3C2410_GPB(2),
 516                 .use_gpios = 1,
 517                 .data_hold = 1,
 518                 .data_setup = 1,
 519                 .clock_high = 1,
 520                 .mode_hold = 1,
 521                 .mode = 1,
 522                 .mode_setup = 1,
 523         },
 524         .model = UDA134X_UDA1341,
 525 };
 526
 527 static struct platform_device uda1340_codec = {
 528                 .name = "uda134x-codec",
 529                 .id = -1,
 530                 .dev = {
 531                         .platform_data  = &s3c24xx_uda134x,
 532                 },
 533 };
 534
 535 static struct platform_device *mini2440_devices[] __initdata = {
 536         &s3c_device_ohci,
 537         &s3c_device_wdt,
 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         &s3c2440_device_dma,
 550         &s3c_device_iis,
 551         &uda1340_codec,
 552         &mini2440_audio,
 553 };
 554
 555 static void __init mini2440_map_io(void)
 556 {
 557         s3c24xx_init_io(mini2440_iodesc, ARRAY_SIZE(mini2440_iodesc));
 558         s3c24xx_init_uarts(mini2440_uartcfgs, ARRAY_SIZE(mini2440_uartcfgs));
 559         samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
 560 }
 561
 562 static void __init mini2440_init_time(void)
 563 {
 564         s3c2440_init_clocks(12000000);
 565         samsung_timer_init();
 566 }
 567
 568 /*
 569  * mini2440_features string
 570  *
 571  * t = Touchscreen present
 572  * b = backlight control
 573  * c = camera [TODO]
 574  * 0-9 LCD configuration
 575  *
 576  */
 577 static char mini2440_features_str[12] __initdata = "0tb";
 578
 579 static int __init mini2440_features_setup(char *str)
 580 {
 581         if (str)
 582                 strlcpy(mini2440_features_str, str,
 583                         sizeof(mini2440_features_str));
 584         return 1;
 585 }
 586
 587 __setup("mini2440=", mini2440_features_setup);
 588
 589 #define FEATURE_SCREEN (1 << 0)
 590 #define FEATURE_BACKLIGHT (1 << 1)
 591 #define FEATURE_TOUCH (1 << 2)
 592 #define FEATURE_CAMERA (1 << 3)
 593
 594 struct mini2440_features_t {
 595         int count;
 596         int done;
 597         int lcd_index;
 598         struct platform_device *optional[8];
 599 };
 600
 601 static void __init mini2440_parse_features(
 602                 struct mini2440_features_t *features,
 603                 const char *features_str)
 604 {
 605         const char *fp = features_str;
 606
 607         features->count = 0;
 608         features->done = 0;
 609         features->lcd_index = -1;
 610
 611         while (*fp) {
 612                 char f = *fp++;
 613
 614                 switch (f) {
 615                 case '0'...'9': /* tft screen */
 616                         if (features->done & FEATURE_SCREEN) {
 617                                 pr_info("MINI2440: '%c' ignored, screen type already set\n",
 618                                         f);
 619                         } else {
 620                                 int li = f - '0';
 621
 622                                 if (li >= ARRAY_SIZE(mini2440_lcd_cfg))
 623                                         pr_info("MINI2440: '%c' out of range LCD mode\n",
 624                                                 f);
 625                                 else {
 626                                         features->optional[features->count++] =
 627                                                         &s3c_device_lcd;
 628                                         features->lcd_index = li;
 629                                 }
 630                         }
 631                         features->done |= FEATURE_SCREEN;
 632                         break;
 633                 case 'b':
 634                         if (features->done & FEATURE_BACKLIGHT)
 635                                 pr_info("MINI2440: '%c' ignored, backlight already set\n",
 636                                         f);
 637                         else {
 638                                 features->optional[features->count++] =
 639                                                 &mini2440_led_backlight;
 640                         }
 641                         features->done |= FEATURE_BACKLIGHT;
 642                         break;
 643                 case 't':
 644                         pr_info("MINI2440: '%c' ignored, touchscreen not compiled in\n",
 645                                 f);
 646                         break;
 647                 case 'c':
 648                         if (features->done & FEATURE_CAMERA)
 649                                 pr_info("MINI2440: '%c' ignored, camera already registered\n",
 650                                         f);
 651                         else
 652                                 features->optional[features->count++] =
 653                                         &s3c_device_camif;
 654                         features->done |= FEATURE_CAMERA;
 655                         break;
 656                 }
 657         }
 658 }
 659
 660 static void __init mini2440_init(void)
 661 {
 662         struct mini2440_features_t features = { 0 };
 663         int i;
 664
 665         pr_info("MINI2440: Option string mini2440=%s\n",
 666                         mini2440_features_str);
 667
 668         /* Parse the feature string */
 669         mini2440_parse_features(&features, mini2440_features_str);
 670
 671         /* turn LCD on */
 672         s3c_gpio_cfgpin(S3C2410_GPC(0), S3C2410_GPC0_LEND);
 673
 674         /* Turn the backlight early on */
 675         WARN_ON(gpio_request_one(S3C2410_GPG(4), GPIOF_OUT_INIT_HIGH, NULL));
 676         gpio_free(S3C2410_GPG(4));
 677
 678         /* remove pullup on optional PWM backlight -- unused on 3.5 and 7"s */
 679         gpio_request_one(S3C2410_GPB(1), GPIOF_IN, NULL);
 680         s3c_gpio_setpull(S3C2410_GPB(1), S3C_GPIO_PULL_UP);
 681         gpio_free(S3C2410_GPB(1));
 682
 683         /* mark the key as input, without pullups (there is one on the board) */
 684         for (i = 0; i < ARRAY_SIZE(mini2440_buttons); i++) {
 685                 s3c_gpio_setpull(mini2440_buttons[i].gpio, S3C_GPIO_PULL_UP);
 686                 s3c_gpio_cfgpin(mini2440_buttons[i].gpio, S3C2410_GPIO_INPUT);
 687         }
 688         if (features.lcd_index != -1) {
 689                 int li;
 690
 691                 mini2440_fb_info.displays =
 692                         &mini2440_lcd_cfg[features.lcd_index];
 693
 694                 pr_info("MINI2440: LCD");
 695                 for (li = 0; li < ARRAY_SIZE(mini2440_lcd_cfg); li++)
 696                         if (li == features.lcd_index)
 697                                 pr_cont(" [%d:%dx%d]", li,
 698                                         mini2440_lcd_cfg[li].width,
 699                                         mini2440_lcd_cfg[li].height);
 700                         else
 701                                 pr_cont(" %d:%dx%d", li,
 702                                         mini2440_lcd_cfg[li].width,
 703                                         mini2440_lcd_cfg[li].height);
 704                 pr_cont("\n");
 705                 s3c24xx_fb_set_platdata(&mini2440_fb_info);
 706         }
 707
 708         s3c24xx_udc_set_platdata(&mini2440_udc_cfg);
 709         gpiod_add_lookup_table(&mini2440_mmc_gpio_table);
 710         s3c24xx_mci_set_platdata(&mini2440_mmc_cfg);
 711         s3c_nand_set_platdata(&mini2440_nand_info);
 712         s3c_i2c0_set_platdata(NULL);
 713
 714         i2c_register_board_info(0, mini2440_i2c_devs,
 715                                 ARRAY_SIZE(mini2440_i2c_devs));
 716
 717         platform_add_devices(mini2440_devices, ARRAY_SIZE(mini2440_devices));
 718
 719         if (features.count)     /* the optional features */
 720                 platform_add_devices(features.optional, features.count);
 721
 722 }
 723
 724
 725 MACHINE_START(MINI2440, "MINI2440")
 726         /* Maintainer: Michel Pollet <buserror@gmail.com> */
 727         .atag_offset    = 0x100,
 728         .map_io         = mini2440_map_io,
 729         .init_machine   = mini2440_init,
 730         .init_irq       = s3c2440_init_irq,
 731         .init_time      = mini2440_init_time,
 732 MACHINE_END