arch/arm/mach-s3c/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 https://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 <linux/platform_data/fb-s3c2410.h>
  34 #include <asm/mach-types.h>
  35
  36 #include "regs-gpio.h"
  37 #include <linux/platform_data/leds-s3c24xx.h>
  38 #include <mach/irqs.h>
  39 #include "gpio-samsung.h"
  40 #include <linux/platform_data/mtd-nand-s3c2410.h>
  41 #include <linux/platform_data/i2c-s3c2410.h>
  42 #include <linux/platform_data/mmc-s3cmci.h>
  43 #include <linux/platform_data/usb-s3c2410_udc.h>
  44
  45 #include <linux/mtd/mtd.h>
  46 #include <linux/mtd/rawnand.h>
  47 #include <linux/mtd/nand-ecc-sw-hamming.h>
  48 #include <linux/mtd/partitions.h>
  49
  50 #include "gpio-cfg.h"
  51 #include "devs.h"
  52 #include "cpu.h"
  53
  54 #include <sound/s3c24xx_uda134x.h>
  55
  56 #include "s3c24xx.h"
  57
  58 #define MACH_MINI2440_DM9K_BASE (S3C2410_CS4 + 0x300)
  59
  60 static struct map_desc mini2440_iodesc[] __initdata = {
  61         /* nothing to declare, move along */
  62 };
  63
  64 #define UCON S3C2410_UCON_DEFAULT
  65 #define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB)
  66 #define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)
  67
  68
  69 static struct s3c2410_uartcfg mini2440_uartcfgs[] __initdata = {
  70         [0] = {
  71                 .hwport         = 0,
  72                 .flags          = 0,
  73                 .ucon           = UCON,
  74                 .ulcon          = ULCON,
  75                 .ufcon          = UFCON,
  76         },
  77         [1] = {
  78                 .hwport         = 1,
  79                 .flags          = 0,
  80                 .ucon           = UCON,
  81                 .ulcon          = ULCON,
  82                 .ufcon          = UFCON,
  83         },
  84         [2] = {
  85                 .hwport         = 2,
  86                 .flags          = 0,
  87                 .ucon           = UCON,
  88                 .ulcon          = ULCON,
  89                 .ufcon          = UFCON,
  90         },
  91 };
  92
  93 /* USB device UDC support */
  94
  95 static struct s3c2410_udc_mach_info mini2440_udc_cfg __initdata = {
  96         .pullup_pin = S3C2410_GPC(5),
  97 };
  98
  99
 100 /* LCD timing and setup */
 101
 102 /*
 103  * This macro simplifies the table bellow
 104  */
 105 #define _LCD_DECLARE(_clock, _xres, margin_left, margin_right, hsync, \
 106                         _yres, margin_top, margin_bottom, vsync, refresh) \
 107         .width = _xres, \
 108         .xres = _xres, \
 109         .height = _yres, \
 110         .yres = _yres, \
 111         .left_margin    = margin_left,  \
 112         .right_margin   = margin_right, \
 113         .upper_margin   = margin_top,   \
 114         .lower_margin   = margin_bottom,        \
 115         .hsync_len      = hsync,        \
 116         .vsync_len      = vsync,        \
 117         .pixclock       = ((_clock*100000000000LL) /    \
 118                            ((refresh) * \
 119                            (hsync + margin_left + _xres + margin_right) * \
 120                            (vsync + margin_top + _yres + margin_bottom))), \
 121         .bpp            = 16,\
 122         .type           = (S3C2410_LCDCON1_TFT16BPP |\
 123                            S3C2410_LCDCON1_TFT)
 124
 125 static struct s3c2410fb_display mini2440_lcd_cfg[] __initdata = {
 126         [0] = { /* mini2440 + 3.5" TFT + touchscreen */
 127                 _LCD_DECLARE(
 128                         7,                      /* The 3.5 is quite fast */
 129                         240, 21, 38, 6,         /* x timing */
 130                         320, 4, 4, 2,           /* y timing */
 131                         60),                    /* refresh rate */
 132                 .lcdcon5        = (S3C2410_LCDCON5_FRM565 |
 133                                    S3C2410_LCDCON5_INVVLINE |
 134                                    S3C2410_LCDCON5_INVVFRAME |
 135                                    S3C2410_LCDCON5_INVVDEN |
 136                                    S3C2410_LCDCON5_PWREN),
 137         },
 138         [1] = { /* mini2440 + 7" TFT + touchscreen */
 139                 _LCD_DECLARE(
 140                         10,                     /* the 7" runs slower */
 141                         800, 40, 40, 48,        /* x timing */
 142                         480, 29, 3, 3,          /* y timing */
 143                         50),                    /* refresh rate */
 144                 .lcdcon5        = (S3C2410_LCDCON5_FRM565 |
 145                                    S3C2410_LCDCON5_INVVLINE |
 146                                    S3C2410_LCDCON5_INVVFRAME |
 147                                    S3C2410_LCDCON5_PWREN),
 148         },
 149         /* The VGA shield can outout at several resolutions. All share
 150          * the same timings, however, anything smaller than 1024x768
 151          * will only be displayed in the top left corner of a 1024x768
 152          * XGA output unless you add optional dip switches to the shield.
 153          * Therefore timings for other resolutions have been omitted here.
 154          */
 155         [2] = {
 156                 _LCD_DECLARE(
 157                         10,
 158                         1024, 1, 2, 2,          /* y timing */
 159                         768, 200, 16, 16,       /* x timing */
 160                         24),    /* refresh rate, maximum stable,
 161                                  * tested with the FPGA shield
 162                                  */
 163                 .lcdcon5        = (S3C2410_LCDCON5_FRM565 |
 164                                    S3C2410_LCDCON5_HWSWP),
 165         },
 166         /* mini2440 + 3.5" TFT (LCD-W35i, LQ035Q1DG06 type) + touchscreen*/
 167         [3] = {
 168                 _LCD_DECLARE(
 169                         /* clock */
 170                         7,
 171                         /* xres, margin_right, margin_left, hsync */
 172                         320, 68, 66, 4,
 173                         /* yres, margin_top, margin_bottom, vsync */
 174                         240, 4, 4, 9,
 175                         /* refresh rate */
 176                         60),
 177                 .lcdcon5        = (S3C2410_LCDCON5_FRM565 |
 178                                    S3C2410_LCDCON5_INVVDEN |
 179                                    S3C2410_LCDCON5_INVVFRAME |
 180                                    S3C2410_LCDCON5_INVVLINE |
 181                                    S3C2410_LCDCON5_INVVCLK |
 182                                    S3C2410_LCDCON5_HWSWP),
 183         },
 184 };
 185
 186 /* todo - put into gpio header */
 187
 188 #define S3C2410_GPCCON_MASK(x)  (3 << ((x) * 2))
 189 #define S3C2410_GPDCON_MASK(x)  (3 << ((x) * 2))
 190
 191 static struct s3c2410fb_mach_info mini2440_fb_info __initdata = {
 192         .displays        = &mini2440_lcd_cfg[0], /* not constant! see init */
 193         .num_displays    = 1,
 194         .default_display = 0,
 195
 196         /* Enable VD[2..7], VD[10..15], VD[18..23] and VCLK, syncs, VDEN
 197          * and disable the pull down resistors on pins we are using for LCD
 198          * data.
 199          */
 200
 201         .gpcup          = (0xf << 1) | (0x3f << 10),
 202
 203         .gpccon         = (S3C2410_GPC1_VCLK   | S3C2410_GPC2_VLINE |
 204                            S3C2410_GPC3_VFRAME | S3C2410_GPC4_VM |
 205                            S3C2410_GPC10_VD2   | S3C2410_GPC11_VD3 |
 206                            S3C2410_GPC12_VD4   | S3C2410_GPC13_VD5 |
 207                            S3C2410_GPC14_VD6   | S3C2410_GPC15_VD7),
 208
 209         .gpccon_mask    = (S3C2410_GPCCON_MASK(1)  | S3C2410_GPCCON_MASK(2)  |
 210                            S3C2410_GPCCON_MASK(3)  | S3C2410_GPCCON_MASK(4)  |
 211                            S3C2410_GPCCON_MASK(10) | S3C2410_GPCCON_MASK(11) |
 212                            S3C2410_GPCCON_MASK(12) | S3C2410_GPCCON_MASK(13) |
 213                            S3C2410_GPCCON_MASK(14) | S3C2410_GPCCON_MASK(15)),
 214
 215         .gpccon_reg     = S3C2410_GPCCON,
 216         .gpcup_reg      = S3C2410_GPCUP,
 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         .gpdcon_reg     = S3C2410_GPDCON,
 235         .gpdup_reg      = S3C2410_GPDUP,
 236 };
 237
 238 /* MMC/SD  */
 239
 240 static struct s3c24xx_mci_pdata mini2440_mmc_cfg __initdata = {
 241         .wprotect_invert        = 1,
 242         .set_power              = s3c24xx_mci_def_set_power,
 243         .ocr_avail              = MMC_VDD_32_33|MMC_VDD_33_34,
 244 };
 245
 246 static struct gpiod_lookup_table mini2440_mmc_gpio_table = {
 247         .dev_id = "s3c2410-sdi",
 248         .table = {
 249                 /* Card detect S3C2410_GPG(8) */
 250                 GPIO_LOOKUP("GPIOG", 8, "cd", GPIO_ACTIVE_LOW),
 251                 /* Write protect S3C2410_GPH(8) */
 252                 GPIO_LOOKUP("GPIOH", 8, "wp", GPIO_ACTIVE_HIGH),
 253                 /* bus pins */
 254                 GPIO_LOOKUP_IDX("GPIOE",  5, "bus", 0, GPIO_ACTIVE_HIGH),
 255                 GPIO_LOOKUP_IDX("GPIOE",  6, "bus", 1, GPIO_ACTIVE_HIGH),
 256                 GPIO_LOOKUP_IDX("GPIOE",  7, "bus", 2, GPIO_ACTIVE_HIGH),
 257                 GPIO_LOOKUP_IDX("GPIOE",  8, "bus", 3, GPIO_ACTIVE_HIGH),
 258                 GPIO_LOOKUP_IDX("GPIOE",  9, "bus", 4, GPIO_ACTIVE_HIGH),
 259                 GPIO_LOOKUP_IDX("GPIOE", 10, "bus", 5, GPIO_ACTIVE_HIGH),
 260                 { },
 261         },
 262 };
 263
 264 /* NAND Flash on MINI2440 board */
 265
 266 static struct mtd_partition mini2440_default_nand_part[] __initdata = {
 267         [0] = {
 268                 .name   = "u-boot",
 269                 .size   = SZ_256K,
 270                 .offset = 0,
 271         },
 272         [1] = {
 273                 .name   = "u-boot-env",
 274                 .size   = SZ_128K,
 275                 .offset = SZ_256K,
 276         },
 277         [2] = {
 278                 .name   = "kernel",
 279                 /* 5 megabytes, for a kernel with no modules
 280                  * or a uImage with a ramdisk attached
 281                  */
 282                 .size   = 0x00500000,
 283                 .offset = SZ_256K + SZ_128K,
 284         },
 285         [3] = {
 286                 .name   = "root",
 287                 .offset = SZ_256K + SZ_128K + 0x00500000,
 288                 .size   = MTDPART_SIZ_FULL,
 289         },
 290 };
 291
 292 static struct s3c2410_nand_set mini2440_nand_sets[] __initdata = {
 293         [0] = {
 294                 .name           = "nand",
 295                 .nr_chips       = 1,
 296                 .nr_partitions  = ARRAY_SIZE(mini2440_default_nand_part),
 297                 .partitions     = mini2440_default_nand_part,
 298                 .flash_bbt      = 1, /* we use u-boot to create a BBT */
 299         },
 300 };
 301
 302 static struct s3c2410_platform_nand mini2440_nand_info __initdata = {
 303         .tacls          = 0,
 304         .twrph0         = 25,
 305         .twrph1         = 15,
 306         .nr_sets        = ARRAY_SIZE(mini2440_nand_sets),
 307         .sets           = mini2440_nand_sets,
 308         .ignore_unset_ecc = 1,
 309         .engine_type    = NAND_ECC_ENGINE_TYPE_ON_HOST,
 310 };
 311
 312 /* DM9000AEP 10/100 ethernet controller */
 313
 314 static struct resource mini2440_dm9k_resource[] = {
 315         [0] = DEFINE_RES_MEM(MACH_MINI2440_DM9K_BASE, 4),
 316         [1] = DEFINE_RES_MEM(MACH_MINI2440_DM9K_BASE + 4, 4),
 317         [2] = DEFINE_RES_NAMED(IRQ_EINT7, 1, NULL, IORESOURCE_IRQ
 318                                                 | IORESOURCE_IRQ_HIGHEDGE),
 319 };
 320
 321 /*
 322  * The DM9000 has no eeprom, and it's MAC address is set by
 323  * the bootloader before starting the kernel.
 324  */
 325 static struct dm9000_plat_data mini2440_dm9k_pdata = {
 326         .flags          = (DM9000_PLATF_16BITONLY | DM9000_PLATF_NO_EEPROM),
 327 };
 328
 329 static struct platform_device mini2440_device_eth = {
 330         .name           = "dm9000",
 331         .id             = -1,
 332         .num_resources  = ARRAY_SIZE(mini2440_dm9k_resource),
 333         .resource       = mini2440_dm9k_resource,
 334         .dev            = {
 335                 .platform_data  = &mini2440_dm9k_pdata,
 336         },
 337 };
 338
 339 /*  CON5
 340  *      +--+     /-----\
 341  *      |  |    |       |
 342  *      |  |    |  BAT  |
 343  *      |  |     \_____/
 344  *      |  |
 345  *      |  |  +----+  +----+
 346  *      |  |  | K5 |  | K1 |
 347  *      |  |  +----+  +----+
 348  *      |  |  +----+  +----+
 349  *      |  |  | K4 |  | K2 |
 350  *      |  |  +----+  +----+
 351  *      |  |  +----+  +----+
 352  *      |  |  | K6 |  | K3 |
 353  *      |  |  +----+  +----+
 354  *        .....
 355  */
 356 static struct gpio_keys_button mini2440_buttons[] = {
 357         {
 358                 .gpio           = S3C2410_GPG(0),               /* K1 */
 359                 .code           = KEY_F1,
 360                 .desc           = "Button 1",
 361                 .active_low     = 1,
 362         },
 363         {
 364                 .gpio           = S3C2410_GPG(3),               /* K2 */
 365                 .code           = KEY_F2,
 366                 .desc           = "Button 2",
 367                 .active_low     = 1,
 368         },
 369         {
 370                 .gpio           = S3C2410_GPG(5),               /* K3 */
 371                 .code           = KEY_F3,
 372                 .desc           = "Button 3",
 373                 .active_low     = 1,
 374         },
 375         {
 376                 .gpio           = S3C2410_GPG(6),               /* K4 */
 377                 .code           = KEY_POWER,
 378                 .desc           = "Power",
 379                 .active_low     = 1,
 380         },
 381         {
 382                 .gpio           = S3C2410_GPG(7),               /* K5 */
 383                 .code           = KEY_F5,
 384                 .desc           = "Button 5",
 385                 .active_low     = 1,
 386         },
 387 #if 0
 388         /* this pin is also known as TCLK1 and seems to already
 389          * marked as "in use" somehow in the kernel -- possibly wrongly
 390          */
 391         {
 392                 .gpio           = S3C2410_GPG(11),      /* K6 */
 393                 .code           = KEY_F6,
 394                 .desc           = "Button 6",
 395                 .active_low     = 1,
 396         },
 397 #endif
 398 };
 399
 400 static struct gpio_keys_platform_data mini2440_button_data = {
 401         .buttons        = mini2440_buttons,
 402         .nbuttons       = ARRAY_SIZE(mini2440_buttons),
 403 };
 404
 405 static struct platform_device mini2440_button_device = {
 406         .name           = "gpio-keys",
 407         .id             = -1,
 408         .dev            = {
 409                 .platform_data  = &mini2440_button_data,
 410         }
 411 };
 412
 413 /* LEDS */
 414
 415 static struct gpiod_lookup_table mini2440_led1_gpio_table = {
 416         .dev_id = "s3c24xx_led.1",
 417         .table = {
 418                 GPIO_LOOKUP("GPB", 5, NULL, GPIO_ACTIVE_LOW | GPIO_OPEN_DRAIN),
 419                 { },
 420         },
 421 };
 422
 423 static struct gpiod_lookup_table mini2440_led2_gpio_table = {
 424         .dev_id = "s3c24xx_led.2",
 425         .table = {
 426                 GPIO_LOOKUP("GPB", 6, NULL, GPIO_ACTIVE_LOW | GPIO_OPEN_DRAIN),
 427                 { },
 428         },
 429 };
 430
 431 static struct gpiod_lookup_table mini2440_led3_gpio_table = {
 432         .dev_id = "s3c24xx_led.3",
 433         .table = {
 434                 GPIO_LOOKUP("GPB", 7, NULL, GPIO_ACTIVE_LOW | GPIO_OPEN_DRAIN),
 435                 { },
 436         },
 437 };
 438
 439 static struct gpiod_lookup_table mini2440_led4_gpio_table = {
 440         .dev_id = "s3c24xx_led.4",
 441         .table = {
 442                 GPIO_LOOKUP("GPB", 8, NULL, GPIO_ACTIVE_LOW | GPIO_OPEN_DRAIN),
 443                 { },
 444         },
 445 };
 446
 447 static struct gpiod_lookup_table mini2440_backlight_gpio_table = {
 448         .dev_id = "s3c24xx_led.5",
 449         .table = {
 450                 GPIO_LOOKUP("GPG", 4, NULL, GPIO_ACTIVE_HIGH),
 451                 { },
 452         },
 453 };
 454
 455 static struct s3c24xx_led_platdata mini2440_led1_pdata = {
 456         .name           = "led1",
 457         .def_trigger    = "heartbeat",
 458 };
 459
 460 static struct s3c24xx_led_platdata mini2440_led2_pdata = {
 461         .name           = "led2",
 462         .def_trigger    = "nand-disk",
 463 };
 464
 465 static struct s3c24xx_led_platdata mini2440_led3_pdata = {
 466         .name           = "led3",
 467         .def_trigger    = "mmc0",
 468 };
 469
 470 static struct s3c24xx_led_platdata mini2440_led4_pdata = {
 471         .name           = "led4",
 472         .def_trigger    = "",
 473 };
 474
 475 static struct s3c24xx_led_platdata mini2440_led_backlight_pdata = {
 476         .name           = "backlight",
 477         .def_trigger    = "backlight",
 478 };
 479
 480 static struct platform_device mini2440_led1 = {
 481         .name           = "s3c24xx_led",
 482         .id             = 1,
 483         .dev            = {
 484                 .platform_data  = &mini2440_led1_pdata,
 485         },
 486 };
 487
 488 static struct platform_device mini2440_led2 = {
 489         .name           = "s3c24xx_led",
 490         .id             = 2,
 491         .dev            = {
 492                 .platform_data  = &mini2440_led2_pdata,
 493         },
 494 };
 495
 496 static struct platform_device mini2440_led3 = {
 497         .name           = "s3c24xx_led",
 498         .id             = 3,
 499         .dev            = {
 500                 .platform_data  = &mini2440_led3_pdata,
 501         },
 502 };
 503
 504 static struct platform_device mini2440_led4 = {
 505         .name           = "s3c24xx_led",
 506         .id             = 4,
 507         .dev            = {
 508                 .platform_data  = &mini2440_led4_pdata,
 509         },
 510 };
 511
 512 static struct platform_device mini2440_led_backlight = {
 513         .name           = "s3c24xx_led",
 514         .id             = 5,
 515         .dev            = {
 516                 .platform_data  = &mini2440_led_backlight_pdata,
 517         },
 518 };
 519
 520 /* AUDIO */
 521
 522 static struct s3c24xx_uda134x_platform_data mini2440_audio_pins = {
 523         .l3_clk = S3C2410_GPB(4),
 524         .l3_mode = S3C2410_GPB(2),
 525         .l3_data = S3C2410_GPB(3),
 526         .model = UDA134X_UDA1341
 527 };
 528
 529 static struct platform_device mini2440_audio = {
 530         .name           = "s3c24xx_uda134x",
 531         .id             = 0,
 532         .dev            = {
 533                 .platform_data  = &mini2440_audio_pins,
 534         },
 535 };
 536
 537 /*
 538  * I2C devices
 539  */
 540 static const struct property_entry mini2440_at24_properties[] = {
 541         PROPERTY_ENTRY_U32("pagesize", 16),
 542         { }
 543 };
 544
 545 static struct i2c_board_info mini2440_i2c_devs[] __initdata = {
 546         {
 547                 I2C_BOARD_INFO("24c08", 0x50),
 548                 .properties = mini2440_at24_properties,
 549         },
 550 };
 551
 552 static struct uda134x_platform_data s3c24xx_uda134x = {
 553         .l3 = {
 554                 .gpio_clk = S3C2410_GPB(4),
 555                 .gpio_data = S3C2410_GPB(3),
 556                 .gpio_mode = S3C2410_GPB(2),
 557                 .use_gpios = 1,
 558                 .data_hold = 1,
 559                 .data_setup = 1,
 560                 .clock_high = 1,
 561                 .mode_hold = 1,
 562                 .mode = 1,
 563                 .mode_setup = 1,
 564         },
 565         .model = UDA134X_UDA1341,
 566 };
 567
 568 static struct platform_device uda1340_codec = {
 569                 .name = "uda134x-codec",
 570                 .id = -1,
 571                 .dev = {
 572                         .platform_data  = &s3c24xx_uda134x,
 573                 },
 574 };
 575
 576 static struct platform_device *mini2440_devices[] __initdata = {
 577         &s3c_device_ohci,
 578         &s3c_device_wdt,
 579         &s3c_device_i2c0,
 580         &s3c_device_rtc,
 581         &s3c_device_usbgadget,
 582         &mini2440_device_eth,
 583         &mini2440_led1,
 584         &mini2440_led2,
 585         &mini2440_led3,
 586         &mini2440_led4,
 587         &mini2440_button_device,
 588         &s3c_device_nand,
 589         &s3c_device_sdi,
 590         &s3c2440_device_dma,
 591         &s3c_device_iis,
 592         &uda1340_codec,
 593         &mini2440_audio,
 594 };
 595
 596 static void __init mini2440_map_io(void)
 597 {
 598         s3c24xx_init_io(mini2440_iodesc, ARRAY_SIZE(mini2440_iodesc));
 599         s3c24xx_init_uarts(mini2440_uartcfgs, ARRAY_SIZE(mini2440_uartcfgs));
 600         s3c24xx_set_timer_source(S3C24XX_PWM3, S3C24XX_PWM4);
 601 }
 602
 603 static void __init mini2440_init_time(void)
 604 {
 605         s3c2440_init_clocks(12000000);
 606         s3c24xx_timer_init();
 607 }
 608
 609 /*
 610  * mini2440_features string
 611  *
 612  * t = Touchscreen present
 613  * b = backlight control
 614  * c = camera [TODO]
 615  * 0-9 LCD configuration
 616  *
 617  */
 618 static char mini2440_features_str[12] __initdata = "0tb";
 619
 620 static int __init mini2440_features_setup(char *str)
 621 {
 622         if (str)
 623                 strlcpy(mini2440_features_str, str,
 624                         sizeof(mini2440_features_str));
 625         return 1;
 626 }
 627
 628 __setup("mini2440=", mini2440_features_setup);
 629
 630 #define FEATURE_SCREEN (1 << 0)
 631 #define FEATURE_BACKLIGHT (1 << 1)
 632 #define FEATURE_TOUCH (1 << 2)
 633 #define FEATURE_CAMERA (1 << 3)
 634
 635 struct mini2440_features_t {
 636         int count;
 637         int done;
 638         int lcd_index;
 639         struct platform_device *optional[8];
 640 };
 641
 642 static void __init mini2440_parse_features(
 643                 struct mini2440_features_t *features,
 644                 const char *features_str)
 645 {
 646         const char *fp = features_str;
 647
 648         features->count = 0;
 649         features->done = 0;
 650         features->lcd_index = -1;
 651
 652         while (*fp) {
 653                 char f = *fp++;
 654
 655                 switch (f) {
 656                 case '0'...'9': /* tft screen */
 657                         if (features->done & FEATURE_SCREEN) {
 658                                 pr_info("MINI2440: '%c' ignored, screen type already set\n",
 659                                         f);
 660                         } else {
 661                                 int li = f - '0';
 662
 663                                 if (li >= ARRAY_SIZE(mini2440_lcd_cfg))
 664                                         pr_info("MINI2440: '%c' out of range LCD mode\n",
 665                                                 f);
 666                                 else {
 667                                         features->optional[features->count++] =
 668                                                         &s3c_device_lcd;
 669                                         features->lcd_index = li;
 670                                 }
 671                         }
 672                         features->done |= FEATURE_SCREEN;
 673                         break;
 674                 case 'b':
 675                         if (features->done & FEATURE_BACKLIGHT)
 676                                 pr_info("MINI2440: '%c' ignored, backlight already set\n",
 677                                         f);
 678                         else {
 679                                 features->optional[features->count++] =
 680                                                 &mini2440_led_backlight;
 681                         }
 682                         features->done |= FEATURE_BACKLIGHT;
 683                         break;
 684                 case 't':
 685                         pr_info("MINI2440: '%c' ignored, touchscreen not compiled in\n",
 686                                 f);
 687                         break;
 688                 case 'c':
 689                         if (features->done & FEATURE_CAMERA)
 690                                 pr_info("MINI2440: '%c' ignored, camera already registered\n",
 691                                         f);
 692                         else
 693                                 features->optional[features->count++] =
 694                                         &s3c_device_camif;
 695                         features->done |= FEATURE_CAMERA;
 696                         break;
 697                 }
 698         }
 699 }
 700
 701 static void __init mini2440_init(void)
 702 {
 703         struct mini2440_features_t features = { 0 };
 704         int i;
 705
 706         pr_info("MINI2440: Option string mini2440=%s\n",
 707                         mini2440_features_str);
 708
 709         /* Parse the feature string */
 710         mini2440_parse_features(&features, mini2440_features_str);
 711
 712         /* turn LCD on */
 713         s3c_gpio_cfgpin(S3C2410_GPC(0), S3C2410_GPC0_LEND);
 714
 715         /* Turn the backlight early on */
 716         WARN_ON(gpio_request_one(S3C2410_GPG(4), GPIOF_OUT_INIT_HIGH, NULL));
 717         gpio_free(S3C2410_GPG(4));
 718
 719         /* remove pullup on optional PWM backlight -- unused on 3.5 and 7"s */
 720         gpio_request_one(S3C2410_GPB(1), GPIOF_IN, NULL);
 721         s3c_gpio_setpull(S3C2410_GPB(1), S3C_GPIO_PULL_UP);
 722         gpio_free(S3C2410_GPB(1));
 723
 724         /* mark the key as input, without pullups (there is one on the board) */
 725         for (i = 0; i < ARRAY_SIZE(mini2440_buttons); i++) {
 726                 s3c_gpio_setpull(mini2440_buttons[i].gpio, S3C_GPIO_PULL_UP);
 727                 s3c_gpio_cfgpin(mini2440_buttons[i].gpio, S3C2410_GPIO_INPUT);
 728         }
 729
 730         /* Configure the I2S pins (GPE0...GPE4) in correct mode */
 731         s3c_gpio_cfgall_range(S3C2410_GPE(0), 5, S3C_GPIO_SFN(2),
 732                               S3C_GPIO_PULL_NONE);
 733
 734         if (features.lcd_index != -1) {
 735                 int li;
 736
 737                 mini2440_fb_info.displays =
 738                         &mini2440_lcd_cfg[features.lcd_index];
 739
 740                 pr_info("MINI2440: LCD");
 741                 for (li = 0; li < ARRAY_SIZE(mini2440_lcd_cfg); li++)
 742                         if (li == features.lcd_index)
 743                                 pr_cont(" [%d:%dx%d]", li,
 744                                         mini2440_lcd_cfg[li].width,
 745                                         mini2440_lcd_cfg[li].height);
 746                         else
 747                                 pr_cont(" %d:%dx%d", li,
 748                                         mini2440_lcd_cfg[li].width,
 749                                         mini2440_lcd_cfg[li].height);
 750                 pr_cont("\n");
 751                 s3c24xx_fb_set_platdata(&mini2440_fb_info);
 752         }
 753
 754         s3c24xx_udc_set_platdata(&mini2440_udc_cfg);
 755         gpiod_add_lookup_table(&mini2440_mmc_gpio_table);
 756         s3c24xx_mci_set_platdata(&mini2440_mmc_cfg);
 757         s3c_nand_set_platdata(&mini2440_nand_info);
 758         s3c_i2c0_set_platdata(NULL);
 759
 760         i2c_register_board_info(0, mini2440_i2c_devs,
 761                                 ARRAY_SIZE(mini2440_i2c_devs));
 762
 763         /* Disable pull-up on the LED lines */
 764         s3c_gpio_setpull(S3C2410_GPB(5), S3C_GPIO_PULL_NONE);
 765         s3c_gpio_setpull(S3C2410_GPB(6), S3C_GPIO_PULL_NONE);
 766         s3c_gpio_setpull(S3C2410_GPB(7), S3C_GPIO_PULL_NONE);
 767         s3c_gpio_setpull(S3C2410_GPB(8), S3C_GPIO_PULL_NONE);
 768         s3c_gpio_setpull(S3C2410_GPG(4), S3C_GPIO_PULL_NONE);
 769
 770         /* Add lookups for the lines */
 771         gpiod_add_lookup_table(&mini2440_led1_gpio_table);
 772         gpiod_add_lookup_table(&mini2440_led2_gpio_table);
 773         gpiod_add_lookup_table(&mini2440_led3_gpio_table);
 774         gpiod_add_lookup_table(&mini2440_led4_gpio_table);
 775         gpiod_add_lookup_table(&mini2440_backlight_gpio_table);
 776
 777         platform_add_devices(mini2440_devices, ARRAY_SIZE(mini2440_devices));
 778
 779         if (features.count)     /* the optional features */
 780                 platform_add_devices(features.optional, features.count);
 781
 782 }
 783
 784
 785 MACHINE_START(MINI2440, "MINI2440")
 786         /* Maintainer: Michel Pollet <buserror@gmail.com> */
 787         .atag_offset    = 0x100,
 788         .map_io         = mini2440_map_io,
 789         .init_machine   = mini2440_init,
 790         .init_irq       = s3c2440_init_irq,
 791         .init_time      = mini2440_init_time,
 792 MACHINE_END