arch/arm/mach-omap1/board-htcherald.c

   1 /*
   2  * HTC Herald board configuration
   3  * Copyright (C) 2009 Cory Maccarrone <darkstar6262@gmail.com>
   4  * Copyright (C) 2009 Wing Linux
   5  *
   6  * Based on the board-htcwizard.c file from the linwizard project:
   7  * Copyright (C) 2006 Unai Uribarri
   8  * Copyright (C) 2008 linwizard.sourceforge.net
   9  *
  10  * This  program is  free  software; you  can  redistribute it  and/or
  11  * modify  it under the  terms of  the GNU  General Public  License as
  12  * published by the Free Software  Foundation; either version 2 of the
  13  * License, or (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful, but
  16  * WITHOUT  ANY  WARRANTY;  without   even  the  implied  warranty  of
  17  * MERCHANTABILITY or  FITNESS FOR A PARTICULAR PURPOSE.   See the GNU
  18  * General Public License for more details.
  19  *
  20  * You should have  received a copy of the  GNU General Public License
  21  * along  with  this program;  if  not,  write  to the  Free  Software
  22  * Foundation,  Inc.,  51 Franklin  Street,  Fifth  Floor, Boston,  MA
  23  * 02110-1301, USA.
  24  *
  25  */
  26
  27 #include <linux/kernel.h>
  28 #include <linux/init.h>
  29 #include <linux/platform_device.h>
  30 #include <linux/input.h>
  31 #include <linux/io.h>
  32 #include <linux/gpio.h>
  33 #include <linux/gpio_keys.h>
  34 #include <linux/i2c.h>
  35 #include <linux/i2c-gpio.h>
  36 #include <linux/htcpld.h>
  37 #include <linux/leds.h>
  38 #include <linux/spi/spi.h>
  39 #include <linux/spi/ads7846.h>
  40
  41 #include <asm/mach-types.h>
  42 #include <asm/mach/arch.h>
  43
  44 #include <plat/omap7xx.h>
  45 #include <plat/common.h>
  46 #include <plat/board.h>
  47 #include <plat/keypad.h>
  48 #include <plat/usb.h>
  49 #include <plat/mmc.h>
  50
  51 #include <mach/irqs.h>
  52
  53 #include <linux/delay.h>
  54
  55 /* LCD register definition */
  56 #define       OMAP_LCDC_CONTROL               (0xfffec000 + 0x00)
  57 #define       OMAP_LCDC_STATUS                (0xfffec000 + 0x10)
  58 #define       OMAP_DMA_LCD_CCR                (0xfffee300 + 0xc2)
  59 #define       OMAP_DMA_LCD_CTRL               (0xfffee300 + 0xc4)
  60 #define       OMAP_LCDC_CTRL_LCD_EN           (1 << 0)
  61 #define       OMAP_LCDC_STAT_DONE             (1 << 0)
  62
  63 /* GPIO definitions for the power button and keyboard slide switch */
  64 #define HTCHERALD_GPIO_POWER 139
  65 #define HTCHERALD_GPIO_SLIDE 174
  66 #define HTCHERALD_GIRQ_BTNS 141
  67
  68 /* GPIO definitions for the touchscreen */
  69 #define HTCHERALD_GPIO_TS 76
  70
  71 /* HTCPLD definitions */
  72
  73 /*
  74  * CPLD Logic
  75  *
  76  * Chip 3 - 0x03
  77  *
  78  * Function            7 6 5 4  3 2 1 0
  79  * ------------------------------------
  80  * DPAD light          x x x x  x x x 1
  81  * SoundDev            x x x x  1 x x x
  82  * Screen white        1 x x x  x x x x
  83  * MMC power on        x x x x  x 1 x x
  84  * Happy times (n)     0 x x x  x 1 x x
  85  *
  86  * Chip 4 - 0x04
  87  *
  88  * Function            7 6 5 4  3 2 1 0
  89  * ------------------------------------
  90  * Keyboard light      x x x x  x x x 1
  91  * LCD Bright (4)      x x x x  x 1 1 x
  92  * LCD Bright (3)      x x x x  x 0 1 x
  93  * LCD Bright (2)      x x x x  x 1 0 x
  94  * LCD Bright (1)      x x x x  x 0 0 x
  95  * LCD Off             x x x x  0 x x x
  96  * LCD image (fb)      1 x x x  x x x x
  97  * LCD image (white)   0 x x x  x x x x
  98  * Caps lock LED       x x 1 x  x x x x
  99  *
 100  * Chip 5 - 0x05
 101  *
 102  * Function            7 6 5 4  3 2 1 0
 103  * ------------------------------------
 104  * Red (solid)         x x x x  x 1 x x
 105  * Red (flash)         x x x x  x x 1 x
 106  * Green (GSM flash)   x x x x  1 x x x
 107  * Green (GSM solid)   x x x 1  x x x x
 108  * Green (wifi flash)  x x 1 x  x x x x
 109  * Blue (bt flash)     x 1 x x  x x x x
 110  * DPAD Int Enable     1 x x x  x x x 0
 111  *
 112  * (Combinations of the above can be made for different colors.)
 113  * The direction pad interrupt enable must be set each time the
 114  * interrupt is handled.
 115  *
 116  * Chip 6 - 0x06
 117  *
 118  * Function            7 6 5 4  3 2 1 0
 119  * ------------------------------------
 120  * Vibrator            x x x x  1 x x x
 121  * Alt LED             x x x 1  x x x x
 122  * Screen white        1 x x x  x x x x
 123  * Screen white        x x 1 x  x x x x
 124  * Screen white        x 0 x x  x x x x
 125  * Enable kbd dpad     x x x x  x x 0 x
 126  * Happy Times         0 1 0 x  x x 0 x
 127  */
 128
 129 /*
 130  * HTCPLD GPIO lines start 16 after OMAP_MAX_GPIO_LINES to account
 131  * for the 16 MPUIO lines.
 132  */
 133 #define HTCPLD_GPIO_START_OFFSET        (OMAP_MAX_GPIO_LINES + 16)
 134 #define HTCPLD_IRQ(chip, offset)        (OMAP_IRQ_END + 8 * (chip) + (offset))
 135 #define HTCPLD_BASE(chip, offset)       \
 136         (HTCPLD_GPIO_START_OFFSET + 8 * (chip) + (offset))
 137
 138 #define HTCPLD_GPIO_LED_DPAD            HTCPLD_BASE(0, 0)
 139 #define HTCPLD_GPIO_LED_KBD             HTCPLD_BASE(1, 0)
 140 #define HTCPLD_GPIO_LED_CAPS            HTCPLD_BASE(1, 5)
 141 #define HTCPLD_GPIO_LED_RED_FLASH       HTCPLD_BASE(2, 1)
 142 #define HTCPLD_GPIO_LED_RED_SOLID       HTCPLD_BASE(2, 2)
 143 #define HTCPLD_GPIO_LED_GREEN_FLASH     HTCPLD_BASE(2, 3)
 144 #define HTCPLD_GPIO_LED_GREEN_SOLID     HTCPLD_BASE(2, 4)
 145 #define HTCPLD_GPIO_LED_WIFI            HTCPLD_BASE(2, 5)
 146 #define HTCPLD_GPIO_LED_BT              HTCPLD_BASE(2, 6)
 147 #define HTCPLD_GPIO_LED_VIBRATE         HTCPLD_BASE(3, 3)
 148 #define HTCPLD_GPIO_LED_ALT             HTCPLD_BASE(3, 4)
 149
 150 #define HTCPLD_GPIO_RIGHT_KBD           HTCPLD_BASE(6, 7)
 151 #define HTCPLD_GPIO_UP_KBD              HTCPLD_BASE(6, 6)
 152 #define HTCPLD_GPIO_LEFT_KBD            HTCPLD_BASE(6, 5)
 153 #define HTCPLD_GPIO_DOWN_KBD            HTCPLD_BASE(6, 4)
 154
 155 #define HTCPLD_GPIO_RIGHT_DPAD          HTCPLD_BASE(7, 7)
 156 #define HTCPLD_GPIO_UP_DPAD             HTCPLD_BASE(7, 6)
 157 #define HTCPLD_GPIO_LEFT_DPAD           HTCPLD_BASE(7, 5)
 158 #define HTCPLD_GPIO_DOWN_DPAD           HTCPLD_BASE(7, 4)
 159 #define HTCPLD_GPIO_ENTER_DPAD          HTCPLD_BASE(7, 3)
 160
 161 /*
 162  * The htcpld chip requires a gpio write to a specific line
 163  * to re-enable interrupts after one has occurred.
 164  */
 165 #define HTCPLD_GPIO_INT_RESET_HI        HTCPLD_BASE(2, 7)
 166 #define HTCPLD_GPIO_INT_RESET_LO        HTCPLD_BASE(2, 0)
 167
 168 /* Chip 5 */
 169 #define HTCPLD_IRQ_RIGHT_KBD            HTCPLD_IRQ(0, 7)
 170 #define HTCPLD_IRQ_UP_KBD               HTCPLD_IRQ(0, 6)
 171 #define HTCPLD_IRQ_LEFT_KBD             HTCPLD_IRQ(0, 5)
 172 #define HTCPLD_IRQ_DOWN_KBD             HTCPLD_IRQ(0, 4)
 173
 174 /* Chip 6 */
 175 #define HTCPLD_IRQ_RIGHT_DPAD           HTCPLD_IRQ(1, 7)
 176 #define HTCPLD_IRQ_UP_DPAD              HTCPLD_IRQ(1, 6)
 177 #define HTCPLD_IRQ_LEFT_DPAD            HTCPLD_IRQ(1, 5)
 178 #define HTCPLD_IRQ_DOWN_DPAD            HTCPLD_IRQ(1, 4)
 179 #define HTCPLD_IRQ_ENTER_DPAD           HTCPLD_IRQ(1, 3)
 180
 181 /* Keyboard definition */
 182
 183 static const unsigned int htc_herald_keymap[] = {
 184         KEY(0, 0, KEY_RECORD), /* Mail button */
 185         KEY(1, 0, KEY_CAMERA), /* Camera */
 186         KEY(2, 0, KEY_PHONE), /* Send key */
 187         KEY(3, 0, KEY_VOLUMEUP), /* Volume up */
 188         KEY(4, 0, KEY_F2),  /* Right bar (landscape) */
 189         KEY(5, 0, KEY_MAIL), /* Win key (portrait) */
 190         KEY(6, 0, KEY_DIRECTORY), /* Right bar (protrait) */
 191         KEY(0, 1, KEY_LEFTCTRL), /* Windows key */
 192         KEY(1, 1, KEY_COMMA),
 193         KEY(2, 1, KEY_M),
 194         KEY(3, 1, KEY_K),
 195         KEY(4, 1, KEY_SLASH), /* OK key */
 196         KEY(5, 1, KEY_I),
 197         KEY(6, 1, KEY_U),
 198         KEY(0, 2, KEY_LEFTALT),
 199         KEY(1, 2, KEY_TAB),
 200         KEY(2, 2, KEY_N),
 201         KEY(3, 2, KEY_J),
 202         KEY(4, 2, KEY_ENTER),
 203         KEY(5, 2, KEY_H),
 204         KEY(6, 2, KEY_Y),
 205         KEY(0, 3, KEY_SPACE),
 206         KEY(1, 3, KEY_L),
 207         KEY(2, 3, KEY_B),
 208         KEY(3, 3, KEY_V),
 209         KEY(4, 3, KEY_BACKSPACE),
 210         KEY(5, 3, KEY_G),
 211         KEY(6, 3, KEY_T),
 212         KEY(0, 4, KEY_CAPSLOCK), /* Shift */
 213         KEY(1, 4, KEY_C),
 214         KEY(2, 4, KEY_F),
 215         KEY(3, 4, KEY_R),
 216         KEY(4, 4, KEY_O),
 217         KEY(5, 4, KEY_E),
 218         KEY(6, 4, KEY_D),
 219         KEY(0, 5, KEY_X),
 220         KEY(1, 5, KEY_Z),
 221         KEY(2, 5, KEY_S),
 222         KEY(3, 5, KEY_W),
 223         KEY(4, 5, KEY_P),
 224         KEY(5, 5, KEY_Q),
 225         KEY(6, 5, KEY_A),
 226         KEY(0, 6, KEY_CONNECT), /* Voice button */
 227         KEY(2, 6, KEY_CANCEL), /* End key */
 228         KEY(3, 6, KEY_VOLUMEDOWN), /* Volume down */
 229         KEY(4, 6, KEY_F1), /* Left bar (landscape) */
 230         KEY(5, 6, KEY_WWW), /* OK button (portrait) */
 231         KEY(6, 6, KEY_CALENDAR), /* Left bar (portrait) */
 232 };
 233
 234 static const struct matrix_keymap_data htc_herald_keymap_data = {
 235         .keymap         = htc_herald_keymap,
 236         .keymap_size    = ARRAY_SIZE(htc_herald_keymap),
 237 };
 238
 239 static struct omap_kp_platform_data htcherald_kp_data = {
 240         .rows   = 7,
 241         .cols   = 7,
 242         .delay = 20,
 243         .rep = true,
 244         .keymap_data = &htc_herald_keymap_data,
 245 };
 246
 247 static struct resource kp_resources[] = {
 248         [0] = {
 249                 .start  = INT_7XX_MPUIO_KEYPAD,
 250                 .end    = INT_7XX_MPUIO_KEYPAD,
 251                 .flags  = IORESOURCE_IRQ,
 252         },
 253 };
 254
 255 static struct platform_device kp_device = {
 256         .name           = "omap-keypad",
 257         .id             = -1,
 258         .dev            = {
 259                 .platform_data = &htcherald_kp_data,
 260         },
 261         .num_resources  = ARRAY_SIZE(kp_resources),
 262         .resource       = kp_resources,
 263 };
 264
 265 /* GPIO buttons for keyboard slide and power button */
 266 static struct gpio_keys_button herald_gpio_keys_table[] = {
 267         {BTN_0,  HTCHERALD_GPIO_POWER, 1, "POWER", EV_KEY, 1, 20},
 268         {SW_LID, HTCHERALD_GPIO_SLIDE, 0, "SLIDE", EV_SW,  1, 20},
 269
 270         {KEY_LEFT,  HTCPLD_GPIO_LEFT_KBD,  1, "LEFT",  EV_KEY, 1, 20},
 271         {KEY_RIGHT, HTCPLD_GPIO_RIGHT_KBD, 1, "RIGHT", EV_KEY, 1, 20},
 272         {KEY_UP,    HTCPLD_GPIO_UP_KBD,    1, "UP",    EV_KEY, 1, 20},
 273         {KEY_DOWN,  HTCPLD_GPIO_DOWN_KBD,  1, "DOWN",  EV_KEY, 1, 20},
 274
 275         {KEY_LEFT,  HTCPLD_GPIO_LEFT_DPAD,   1, "DLEFT",  EV_KEY, 1, 20},
 276         {KEY_RIGHT, HTCPLD_GPIO_RIGHT_DPAD,  1, "DRIGHT", EV_KEY, 1, 20},
 277         {KEY_UP,    HTCPLD_GPIO_UP_DPAD,     1, "DUP",    EV_KEY, 1, 20},
 278         {KEY_DOWN,  HTCPLD_GPIO_DOWN_DPAD,   1, "DDOWN",  EV_KEY, 1, 20},
 279         {KEY_ENTER, HTCPLD_GPIO_ENTER_DPAD,  1, "DENTER", EV_KEY, 1, 20},
 280 };
 281
 282 static struct gpio_keys_platform_data herald_gpio_keys_data = {
 283         .buttons        = herald_gpio_keys_table,
 284         .nbuttons       = ARRAY_SIZE(herald_gpio_keys_table),
 285         .rep            = true,
 286 };
 287
 288 static struct platform_device herald_gpiokeys_device = {
 289         .name      = "gpio-keys",
 290         .id             = -1,
 291         .dev = {
 292                 .platform_data = &herald_gpio_keys_data,
 293         },
 294 };
 295
 296 /* LEDs for the Herald.  These connect to the HTCPLD GPIO device. */
 297 static struct gpio_led gpio_leds[] = {
 298         {"dpad",        NULL, HTCPLD_GPIO_LED_DPAD,        0, 0, LEDS_GPIO_DEFSTATE_OFF},
 299         {"kbd",         NULL, HTCPLD_GPIO_LED_KBD,         0, 0, LEDS_GPIO_DEFSTATE_OFF},
 300         {"vibrate",     NULL, HTCPLD_GPIO_LED_VIBRATE,     0, 0, LEDS_GPIO_DEFSTATE_OFF},
 301         {"green_solid", NULL, HTCPLD_GPIO_LED_GREEN_SOLID, 0, 0, LEDS_GPIO_DEFSTATE_OFF},
 302         {"green_flash", NULL, HTCPLD_GPIO_LED_GREEN_FLASH, 0, 0, LEDS_GPIO_DEFSTATE_OFF},
 303         {"red_solid",   "mmc0", HTCPLD_GPIO_LED_RED_SOLID, 0, 0, LEDS_GPIO_DEFSTATE_OFF},
 304         {"red_flash",   NULL, HTCPLD_GPIO_LED_RED_FLASH,   0, 0, LEDS_GPIO_DEFSTATE_OFF},
 305         {"wifi",        NULL, HTCPLD_GPIO_LED_WIFI,        0, 0, LEDS_GPIO_DEFSTATE_OFF},
 306         {"bt",          NULL, HTCPLD_GPIO_LED_BT,          0, 0, LEDS_GPIO_DEFSTATE_OFF},
 307         {"caps",        NULL, HTCPLD_GPIO_LED_CAPS,        0, 0, LEDS_GPIO_DEFSTATE_OFF},
 308         {"alt",         NULL, HTCPLD_GPIO_LED_ALT,         0, 0, LEDS_GPIO_DEFSTATE_OFF},
 309 };
 310
 311 static struct gpio_led_platform_data gpio_leds_data = {
 312         .leds           = gpio_leds,
 313         .num_leds       = ARRAY_SIZE(gpio_leds),
 314 };
 315
 316 static struct platform_device gpio_leds_device = {
 317         .name           = "leds-gpio",
 318         .id             = 0,
 319         .dev    = {
 320                 .platform_data  = &gpio_leds_data,
 321         },
 322 };
 323
 324 /* HTC PLD chips */
 325
 326 static struct resource htcpld_resources[] = {
 327         [0] = {
 328                 .start  = OMAP_GPIO_IRQ(HTCHERALD_GIRQ_BTNS),
 329                 .end    = OMAP_GPIO_IRQ(HTCHERALD_GIRQ_BTNS),
 330                 .flags  = IORESOURCE_IRQ,
 331         },
 332 };
 333
 334 static struct htcpld_chip_platform_data htcpld_chips[] = {
 335         [0] = {
 336                 .addr           = 0x03,
 337                 .reset          = 0x04,
 338                 .num_gpios      = 8,
 339                 .gpio_out_base  = HTCPLD_BASE(0, 0),
 340                 .gpio_in_base   = HTCPLD_BASE(4, 0),
 341         },
 342         [1] = {
 343                 .addr           = 0x04,
 344                 .reset          = 0x8e,
 345                 .num_gpios      = 8,
 346                 .gpio_out_base  = HTCPLD_BASE(1, 0),
 347                 .gpio_in_base   = HTCPLD_BASE(5, 0),
 348         },
 349         [2] = {
 350                 .addr           = 0x05,
 351                 .reset          = 0x80,
 352                 .num_gpios      = 8,
 353                 .gpio_out_base  = HTCPLD_BASE(2, 0),
 354                 .gpio_in_base   = HTCPLD_BASE(6, 0),
 355                 .irq_base       = HTCPLD_IRQ(0, 0),
 356                 .num_irqs       = 8,
 357         },
 358         [3] = {
 359                 .addr           = 0x06,
 360                 .reset          = 0x40,
 361                 .num_gpios      = 8,
 362                 .gpio_out_base  = HTCPLD_BASE(3, 0),
 363                 .gpio_in_base   = HTCPLD_BASE(7, 0),
 364                 .irq_base       = HTCPLD_IRQ(1, 0),
 365                 .num_irqs       = 8,
 366         },
 367 };
 368
 369 static struct htcpld_core_platform_data htcpld_pfdata = {
 370         .int_reset_gpio_hi = HTCPLD_GPIO_INT_RESET_HI,
 371         .int_reset_gpio_lo = HTCPLD_GPIO_INT_RESET_LO,
 372         .i2c_adapter_id    = 1,
 373
 374         .chip              = htcpld_chips,
 375         .num_chip          = ARRAY_SIZE(htcpld_chips),
 376 };
 377
 378 static struct platform_device htcpld_device = {
 379         .name           = "i2c-htcpld",
 380         .id             = -1,
 381         .resource       = htcpld_resources,
 382         .num_resources  = ARRAY_SIZE(htcpld_resources),
 383         .dev    = {
 384                 .platform_data  = &htcpld_pfdata,
 385         },
 386 };
 387
 388 /* USB Device */
 389 static struct omap_usb_config htcherald_usb_config __initdata = {
 390         .otg = 0,
 391         .register_host = 0,
 392         .register_dev  = 1,
 393         .hmc_mode = 4,
 394         .pins[0] = 2,
 395 };
 396
 397 /* LCD Device resources */
 398 static struct omap_lcd_config htcherald_lcd_config __initdata = {
 399         .ctrl_name      = "internal",
 400 };
 401
 402 static struct omap_board_config_kernel htcherald_config[] __initdata = {
 403         { OMAP_TAG_LCD, &htcherald_lcd_config },
 404 };
 405
 406 static struct platform_device lcd_device = {
 407         .name           = "lcd_htcherald",
 408         .id             = -1,
 409 };
 410
 411 /* MMC Card */
 412 #if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
 413 static struct omap_mmc_platform_data htc_mmc1_data = {
 414         .nr_slots                       = 1,
 415         .switch_slot                    = NULL,
 416         .slots[0]       = {
 417                 .ocr_mask               = MMC_VDD_32_33 | MMC_VDD_33_34,
 418                 .name                   = "mmcblk",
 419                 .nomux                  = 1,
 420                 .wires                  = 4,
 421                 .switch_pin             = -1,
 422         },
 423 };
 424
 425 static struct omap_mmc_platform_data *htc_mmc_data[1];
 426 #endif
 427
 428
 429 /* Platform devices for the Herald */
 430 static struct platform_device *devices[] __initdata = {
 431         &kp_device,
 432         &lcd_device,
 433         &htcpld_device,
 434         &gpio_leds_device,
 435         &herald_gpiokeys_device,
 436 };
 437
 438 /*
 439  * Touchscreen
 440  */
 441 static const struct ads7846_platform_data htcherald_ts_platform_data = {
 442         .model                  = 7846,
 443         .keep_vref_on           = 1,
 444         .x_plate_ohms           = 496,
 445         .gpio_pendown           = HTCHERALD_GPIO_TS,
 446         .pressure_max           = 10000,
 447         .pressure_min           = 5000,
 448         .x_min                  = 528,
 449         .x_max                  = 3760,
 450         .y_min                  = 624,
 451         .y_max                  = 3760,
 452 };
 453
 454 static struct spi_board_info __initdata htcherald_spi_board_info[] = {
 455         {
 456                 .modalias               = "ads7846",
 457                 .platform_data          = &htcherald_ts_platform_data,
 458                 .irq                    = OMAP_GPIO_IRQ(HTCHERALD_GPIO_TS),
 459                 .max_speed_hz           = 2500000,
 460                 .bus_num                = 2,
 461                 .chip_select            = 1,
 462         }
 463 };
 464
 465 /*
 466  * Init functions from here on
 467  */
 468
 469 static void __init htcherald_lcd_init(void)
 470 {
 471         u32 reg;
 472         unsigned int tries = 200;
 473
 474         /* disable controller if active */
 475         reg = omap_readl(OMAP_LCDC_CONTROL);
 476         if (reg & OMAP_LCDC_CTRL_LCD_EN) {
 477                 reg &= ~OMAP_LCDC_CTRL_LCD_EN;
 478                 omap_writel(reg, OMAP_LCDC_CONTROL);
 479
 480                 /* wait for end of frame */
 481                 while (!(omap_readl(OMAP_LCDC_STATUS) & OMAP_LCDC_STAT_DONE)) {
 482                         tries--;
 483                         if (!tries)
 484                                 break;
 485                 }
 486                 if (!tries)
 487                         printk(KERN_WARNING "Timeout waiting for end of frame "
 488                                "-- LCD may not be available\n");
 489
 490                 /* turn off DMA */
 491                 reg = omap_readw(OMAP_DMA_LCD_CCR);
 492                 reg &= ~(1 << 7);
 493                 omap_writew(reg, OMAP_DMA_LCD_CCR);
 494
 495                 reg = omap_readw(OMAP_DMA_LCD_CTRL);
 496                 reg &= ~(1 << 8);
 497                 omap_writew(reg, OMAP_DMA_LCD_CTRL);
 498         }
 499 }
 500
 501 static void __init htcherald_map_io(void)
 502 {
 503         omap1_map_common_io();
 504
 505         /*
 506          * The LCD panel must be disabled and DMA turned off here, as doing
 507          * it later causes the LCD never to reinitialize.
 508          */
 509         htcherald_lcd_init();
 510
 511         printk(KERN_INFO "htcherald_map_io done.\n");
 512 }
 513
 514 static void __init htcherald_disable_watchdog(void)
 515 {
 516         /* Disable watchdog if running */
 517         if (omap_readl(OMAP_WDT_TIMER_MODE) & 0x8000) {
 518                 /*
 519                  * disable a potentially running watchdog timer before
 520                  * it kills us.
 521                  */
 522                 printk(KERN_WARNING "OMAP850 Watchdog seems to be activated, disabling it for now.\n");
 523                 omap_writel(0xF5, OMAP_WDT_TIMER_MODE);
 524                 omap_writel(0xA0, OMAP_WDT_TIMER_MODE);
 525         }
 526 }
 527
 528 #define HTCHERALD_GPIO_USB_EN1 33
 529 #define HTCHERALD_GPIO_USB_EN2 73
 530 #define HTCHERALD_GPIO_USB_DM  35
 531 #define HTCHERALD_GPIO_USB_DP  36
 532
 533 static void __init htcherald_usb_enable(void)
 534 {
 535         unsigned int tries = 20;
 536         unsigned int value = 0;
 537
 538         /* Request the GPIOs we need to control here */
 539         if (gpio_request(HTCHERALD_GPIO_USB_EN1, "herald_usb") < 0)
 540                 goto err1;
 541
 542         if (gpio_request(HTCHERALD_GPIO_USB_EN2, "herald_usb") < 0)
 543                 goto err2;
 544
 545         if (gpio_request(HTCHERALD_GPIO_USB_DM, "herald_usb") < 0)
 546                 goto err3;
 547
 548         if (gpio_request(HTCHERALD_GPIO_USB_DP, "herald_usb") < 0)
 549                 goto err4;
 550
 551         /* force USB_EN GPIO to 0 */
 552         do {
 553                 /* output low */
 554                 gpio_direction_output(HTCHERALD_GPIO_USB_EN1, 0);
 555         } while ((value = gpio_get_value(HTCHERALD_GPIO_USB_EN1)) == 1 &&
 556                         --tries);
 557
 558         if (value == 1)
 559                 printk(KERN_WARNING "Unable to reset USB, trying to continue\n");
 560
 561         gpio_direction_output(HTCHERALD_GPIO_USB_EN2, 0); /* output low */
 562         gpio_direction_input(HTCHERALD_GPIO_USB_DM); /* input */
 563         gpio_direction_input(HTCHERALD_GPIO_USB_DP); /* input */
 564
 565         goto done;
 566
 567 err4:
 568         gpio_free(HTCHERALD_GPIO_USB_DM);
 569 err3:
 570         gpio_free(HTCHERALD_GPIO_USB_EN2);
 571 err2:
 572         gpio_free(HTCHERALD_GPIO_USB_EN1);
 573 err1:
 574         printk(KERN_ERR "Unabled to request GPIO for USB\n");
 575 done:
 576         printk(KERN_INFO "USB setup complete.\n");
 577 }
 578
 579 static void __init htcherald_init(void)
 580 {
 581         printk(KERN_INFO "HTC Herald init.\n");
 582
 583         /* Do board initialization before we register all the devices */
 584         omap_board_config = htcherald_config;
 585         omap_board_config_size = ARRAY_SIZE(htcherald_config);
 586         platform_add_devices(devices, ARRAY_SIZE(devices));
 587
 588         htcherald_disable_watchdog();
 589
 590         htcherald_usb_enable();
 591         omap1_usb_init(&htcherald_usb_config);
 592
 593         spi_register_board_info(htcherald_spi_board_info,
 594                 ARRAY_SIZE(htcherald_spi_board_info));
 595
 596         omap_register_i2c_bus(1, 100, NULL, 0);
 597
 598 #if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
 599         htc_mmc_data[0] = &htc_mmc1_data;
 600         omap1_init_mmc(htc_mmc_data, 1);
 601 #endif
 602 }
 603
 604 static void __init htcherald_init_irq(void)
 605 {
 606         printk(KERN_INFO "htcherald_init_irq.\n");
 607         omap1_init_common_hw();
 608         omap_init_irq();
 609 }
 610
 611 MACHINE_START(HERALD, "HTC Herald")
 612         /* Maintainer: Cory Maccarrone <darkstar6262@gmail.com> */
 613         /* Maintainer: wing-linux.sourceforge.net */
 614         .boot_params    = 0x10000100,
 615         .map_io         = htcherald_map_io,
 616         .reserve        = omap_reserve,
 617         .init_irq       = htcherald_init_irq,
 618         .init_machine   = htcherald_init,
 619         .timer          = &omap_timer,
 620 MACHINE_END