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 #include <linux/kernel.h>
  27 #include <linux/init.h>
  28 #include <linux/platform_device.h>
  29 #include <linux/input.h>
  30 #include <linux/io.h>
  31 #include <linux/gpio.h>
  32 #include <linux/gpio_keys.h>
  33 #include <linux/i2c.h>
  34 #include <linux/i2c-gpio.h>
  35 #include <linux/htcpld.h>
  36 #include <linux/leds.h>
  37 #include <linux/spi/spi.h>
  38 #include <linux/spi/ads7846.h>
  39
  40 #include <asm/mach-types.h>
  41 #include <asm/mach/arch.h>
  42
  43 #include <plat/omap7xx.h>
  44 #include "common.h"
  45 #include <plat/board.h>
  46 #include <plat/keypad.h>
  47 #include <plat/usb.h>
  48 #include <plat/mmc.h>
  49
  50 #include <mach/irqs.h>
  51
  52 #include <linux/delay.h>
  53
  54 /* LCD register definition */
  55 #define       OMAP_LCDC_CONTROL               (0xfffec000 + 0x00)
  56 #define       OMAP_LCDC_STATUS                (0xfffec000 + 0x10)
  57 #define       OMAP_DMA_LCD_CCR                (0xfffee300 + 0xc2)
  58 #define       OMAP_DMA_LCD_CTRL               (0xfffee300 + 0xc4)
  59 #define       OMAP_LCDC_CTRL_LCD_EN           (1 << 0)
  60 #define       OMAP_LCDC_STAT_DONE             (1 << 0)
  61
  62 /* GPIO definitions for the power button and keyboard slide switch */
  63 #define HTCHERALD_GPIO_POWER 139
  64 #define HTCHERALD_GPIO_SLIDE 174
  65 #define HTCHERALD_GIRQ_BTNS 141
  66
  67 /* GPIO definitions for the touchscreen */
  68 #define HTCHERALD_GPIO_TS 76
  69
  70 /* HTCPLD definitions */
  71
  72 /*
  73  * CPLD Logic
  74  *
  75  * Chip 3 - 0x03
  76  *
  77  * Function            7 6 5 4  3 2 1 0
  78  * ------------------------------------
  79  * DPAD light          x x x x  x x x 1
  80  * SoundDev            x x x x  1 x x x
  81  * Screen white        1 x x x  x x x x
  82  * MMC power on        x x x x  x 1 x x
  83  * Happy times (n)     0 x x x  x 1 x x
  84  *
  85  * Chip 4 - 0x04
  86  *
  87  * Function            7 6 5 4  3 2 1 0
  88  * ------------------------------------
  89  * Keyboard light      x x x x  x x x 1
  90  * LCD Bright (4)      x x x x  x 1 1 x
  91  * LCD Bright (3)      x x x x  x 0 1 x
  92  * LCD Bright (2)      x x x x  x 1 0 x
  93  * LCD Bright (1)      x x x x  x 0 0 x
  94  * LCD Off             x x x x  0 x x x
  95  * LCD image (fb)      1 x x x  x x x x
  96  * LCD image (white)   0 x x x  x x x x
  97  * Caps lock LED       x x 1 x  x x x x
  98  *
  99  * Chip 5 - 0x05
 100  *
 101  * Function            7 6 5 4  3 2 1 0
 102  * ------------------------------------
 103  * Red (solid)         x x x x  x 1 x x
 104  * Red (flash)         x x x x  x x 1 x
 105  * Green (GSM flash)   x x x x  1 x x x
 106  * Green (GSM solid)   x x x 1  x x x x
 107  * Green (wifi flash)  x x 1 x  x x x x
 108  * Blue (bt flash)     x 1 x x  x x x x
 109  * DPAD Int Enable     1 x x x  x x x 0
 110  *
 111  * (Combinations of the above can be made for different colors.)
 112  * The direction pad interrupt enable must be set each time the
 113  * interrupt is handled.
 114  *
 115  * Chip 6 - 0x06
 116  *
 117  * Function            7 6 5 4  3 2 1 0
 118  * ------------------------------------
 119  * Vibrator            x x x x  1 x x x
 120  * Alt LED             x x x 1  x x x x
 121  * Screen white        1 x x x  x x x x
 122  * Screen white        x x 1 x  x x x x
 123  * Screen white        x 0 x x  x x x x
 124  * Enable kbd dpad     x x x x  x x 0 x
 125  * Happy Times         0 1 0 x  x x 0 x
 126  */
 127
 128 /*
 129  * HTCPLD GPIO lines start 16 after OMAP_MAX_GPIO_LINES to account
 130  * for the 16 MPUIO lines.
 131  */
 132 #define HTCPLD_GPIO_START_OFFSET        (OMAP_MAX_GPIO_LINES + 16)
 133 #define HTCPLD_IRQ(chip, offset)        (OMAP_IRQ_END + 8 * (chip) + (offset))
 134 #define HTCPLD_BASE(chip, offset)       \
 135         (HTCPLD_GPIO_START_OFFSET + 8 * (chip) + (offset))
 136
 137 #define HTCPLD_GPIO_LED_DPAD            HTCPLD_BASE(0, 0)
 138 #define HTCPLD_GPIO_LED_KBD             HTCPLD_BASE(1, 0)
 139 #define HTCPLD_GPIO_LED_CAPS            HTCPLD_BASE(1, 5)
 140 #define HTCPLD_GPIO_LED_RED_FLASH       HTCPLD_BASE(2, 1)
 141 #define HTCPLD_GPIO_LED_RED_SOLID       HTCPLD_BASE(2, 2)
 142 #define HTCPLD_GPIO_LED_GREEN_FLASH     HTCPLD_BASE(2, 3)
 143 #define HTCPLD_GPIO_LED_GREEN_SOLID     HTCPLD_BASE(2, 4)
 144 #define HTCPLD_GPIO_LED_WIFI            HTCPLD_BASE(2, 5)
 145 #define HTCPLD_GPIO_LED_BT              HTCPLD_BASE(2, 6)
 146 #define HTCPLD_GPIO_LED_VIBRATE         HTCPLD_BASE(3, 3)
 147 #define HTCPLD_GPIO_LED_ALT             HTCPLD_BASE(3, 4)
 148
 149 #define HTCPLD_GPIO_RIGHT_KBD           HTCPLD_BASE(6, 7)
 150 #define HTCPLD_GPIO_UP_KBD              HTCPLD_BASE(6, 6)
 151 #define HTCPLD_GPIO_LEFT_KBD            HTCPLD_BASE(6, 5)
 152 #define HTCPLD_GPIO_DOWN_KBD            HTCPLD_BASE(6, 4)
 153
 154 #define HTCPLD_GPIO_RIGHT_DPAD          HTCPLD_BASE(7, 7)
 155 #define HTCPLD_GPIO_UP_DPAD             HTCPLD_BASE(7, 6)
 156 #define HTCPLD_GPIO_LEFT_DPAD           HTCPLD_BASE(7, 5)
 157 #define HTCPLD_GPIO_DOWN_DPAD           HTCPLD_BASE(7, 4)
 158 #define HTCPLD_GPIO_ENTER_DPAD          HTCPLD_BASE(7, 3)
 159
 160 /*
 161  * The htcpld chip requires a gpio write to a specific line
 162  * to re-enable interrupts after one has occurred.
 163  */
 164 #define HTCPLD_GPIO_INT_RESET_HI        HTCPLD_BASE(2, 7)
 165 #define HTCPLD_GPIO_INT_RESET_LO        HTCPLD_BASE(2, 0)
 166
 167 /* Chip 5 */
 168 #define HTCPLD_IRQ_RIGHT_KBD            HTCPLD_IRQ(0, 7)
 169 #define HTCPLD_IRQ_UP_KBD               HTCPLD_IRQ(0, 6)
 170 #define HTCPLD_IRQ_LEFT_KBD             HTCPLD_IRQ(0, 5)
 171 #define HTCPLD_IRQ_DOWN_KBD             HTCPLD_IRQ(0, 4)
 172
 173 /* Chip 6 */
 174 #define HTCPLD_IRQ_RIGHT_DPAD           HTCPLD_IRQ(1, 7)
 175 #define HTCPLD_IRQ_UP_DPAD              HTCPLD_IRQ(1, 6)
 176 #define HTCPLD_IRQ_LEFT_DPAD            HTCPLD_IRQ(1, 5)
 177 #define HTCPLD_IRQ_DOWN_DPAD            HTCPLD_IRQ(1, 4)
 178 #define HTCPLD_IRQ_ENTER_DPAD           HTCPLD_IRQ(1, 3)
 179
 180 /* Keyboard definition */
 181
 182 static const unsigned int htc_herald_keymap[] = {
 183         KEY(0, 0, KEY_RECORD), /* Mail button */
 184         KEY(1, 0, KEY_CAMERA), /* Camera */
 185         KEY(2, 0, KEY_PHONE), /* Send key */
 186         KEY(3, 0, KEY_VOLUMEUP), /* Volume up */
 187         KEY(4, 0, KEY_F2),  /* Right bar (landscape) */
 188         KEY(5, 0, KEY_MAIL), /* Win key (portrait) */
 189         KEY(6, 0, KEY_DIRECTORY), /* Right bar (protrait) */
 190         KEY(0, 1, KEY_LEFTCTRL), /* Windows key */
 191         KEY(1, 1, KEY_COMMA),
 192         KEY(2, 1, KEY_M),
 193         KEY(3, 1, KEY_K),
 194         KEY(4, 1, KEY_SLASH), /* OK key */
 195         KEY(5, 1, KEY_I),
 196         KEY(6, 1, KEY_U),
 197         KEY(0, 2, KEY_LEFTALT),
 198         KEY(1, 2, KEY_TAB),
 199         KEY(2, 2, KEY_N),
 200         KEY(3, 2, KEY_J),
 201         KEY(4, 2, KEY_ENTER),
 202         KEY(5, 2, KEY_H),
 203         KEY(6, 2, KEY_Y),
 204         KEY(0, 3, KEY_SPACE),
 205         KEY(1, 3, KEY_L),
 206         KEY(2, 3, KEY_B),
 207         KEY(3, 3, KEY_V),
 208         KEY(4, 3, KEY_BACKSPACE),
 209         KEY(5, 3, KEY_G),
 210         KEY(6, 3, KEY_T),
 211         KEY(0, 4, KEY_CAPSLOCK), /* Shift */
 212         KEY(1, 4, KEY_C),
 213         KEY(2, 4, KEY_F),
 214         KEY(3, 4, KEY_R),
 215         KEY(4, 4, KEY_O),
 216         KEY(5, 4, KEY_E),
 217         KEY(6, 4, KEY_D),
 218         KEY(0, 5, KEY_X),
 219         KEY(1, 5, KEY_Z),
 220         KEY(2, 5, KEY_S),
 221         KEY(3, 5, KEY_W),
 222         KEY(4, 5, KEY_P),
 223         KEY(5, 5, KEY_Q),
 224         KEY(6, 5, KEY_A),
 225         KEY(0, 6, KEY_CONNECT), /* Voice button */
 226         KEY(2, 6, KEY_CANCEL), /* End key */
 227         KEY(3, 6, KEY_VOLUMEDOWN), /* Volume down */
 228         KEY(4, 6, KEY_F1), /* Left bar (landscape) */
 229         KEY(5, 6, KEY_WWW), /* OK button (portrait) */
 230         KEY(6, 6, KEY_CALENDAR), /* Left bar (portrait) */
 231 };
 232
 233 static const struct matrix_keymap_data htc_herald_keymap_data = {
 234         .keymap         = htc_herald_keymap,
 235         .keymap_size    = ARRAY_SIZE(htc_herald_keymap),
 236 };
 237
 238 static struct omap_kp_platform_data htcherald_kp_data = {
 239         .rows   = 7,
 240         .cols   = 7,
 241         .delay = 20,
 242         .rep = true,
 243         .keymap_data = &htc_herald_keymap_data,
 244 };
 245
 246 static struct resource kp_resources[] = {
 247         [0] = {
 248                 .start  = INT_7XX_MPUIO_KEYPAD,
 249                 .end    = INT_7XX_MPUIO_KEYPAD,
 250                 .flags  = IORESOURCE_IRQ,
 251         },
 252 };
 253
 254 static struct platform_device kp_device = {
 255         .name           = "omap-keypad",
 256         .id             = -1,
 257         .dev            = {
 258                 .platform_data = &htcherald_kp_data,
 259         },
 260         .num_resources  = ARRAY_SIZE(kp_resources),
 261         .resource       = kp_resources,
 262 };
 263
 264 /* GPIO buttons for keyboard slide and power button */
 265 static struct gpio_keys_button herald_gpio_keys_table[] = {
 266         {BTN_0,  HTCHERALD_GPIO_POWER, 1, "POWER", EV_KEY, 1, 20},
 267         {SW_LID, HTCHERALD_GPIO_SLIDE, 0, "SLIDE", EV_SW,  1, 20},
 268
 269         {KEY_LEFT,  HTCPLD_GPIO_LEFT_KBD,  1, "LEFT",  EV_KEY, 1, 20},
 270         {KEY_RIGHT, HTCPLD_GPIO_RIGHT_KBD, 1, "RIGHT", EV_KEY, 1, 20},
 271         {KEY_UP,    HTCPLD_GPIO_UP_KBD,    1, "UP",    EV_KEY, 1, 20},
 272         {KEY_DOWN,  HTCPLD_GPIO_DOWN_KBD,  1, "DOWN",  EV_KEY, 1, 20},
 273
 274         {KEY_LEFT,  HTCPLD_GPIO_LEFT_DPAD,   1, "DLEFT",  EV_KEY, 1, 20},
 275         {KEY_RIGHT, HTCPLD_GPIO_RIGHT_DPAD,  1, "DRIGHT", EV_KEY, 1, 20},
 276         {KEY_UP,    HTCPLD_GPIO_UP_DPAD,     1, "DUP",    EV_KEY, 1, 20},
 277         {KEY_DOWN,  HTCPLD_GPIO_DOWN_DPAD,   1, "DDOWN",  EV_KEY, 1, 20},
 278         {KEY_ENTER, HTCPLD_GPIO_ENTER_DPAD,  1, "DENTER", EV_KEY, 1, 20},
 279 };
 280
 281 static struct gpio_keys_platform_data herald_gpio_keys_data = {
 282         .buttons        = herald_gpio_keys_table,
 283         .nbuttons       = ARRAY_SIZE(herald_gpio_keys_table),
 284         .rep            = true,
 285 };
 286
 287 static struct platform_device herald_gpiokeys_device = {
 288         .name      = "gpio-keys",
 289         .id             = -1,
 290         .dev = {
 291                 .platform_data = &herald_gpio_keys_data,
 292         },
 293 };
 294
 295 /* LEDs for the Herald.  These connect to the HTCPLD GPIO device. */
 296 static struct gpio_led gpio_leds[] = {
 297         {"dpad",        NULL, HTCPLD_GPIO_LED_DPAD,        0, 0, LEDS_GPIO_DEFSTATE_OFF},
 298         {"kbd",         NULL, HTCPLD_GPIO_LED_KBD,         0, 0, LEDS_GPIO_DEFSTATE_OFF},
 299         {"vibrate",     NULL, HTCPLD_GPIO_LED_VIBRATE,     0, 0, LEDS_GPIO_DEFSTATE_OFF},
 300         {"green_solid", NULL, HTCPLD_GPIO_LED_GREEN_SOLID, 0, 0, LEDS_GPIO_DEFSTATE_OFF},
 301         {"green_flash", NULL, HTCPLD_GPIO_LED_GREEN_FLASH, 0, 0, LEDS_GPIO_DEFSTATE_OFF},
 302         {"red_solid",   "mmc0", HTCPLD_GPIO_LED_RED_SOLID, 0, 0, LEDS_GPIO_DEFSTATE_OFF},
 303         {"red_flash",   NULL, HTCPLD_GPIO_LED_RED_FLASH,   0, 0, LEDS_GPIO_DEFSTATE_OFF},
 304         {"wifi",        NULL, HTCPLD_GPIO_LED_WIFI,        0, 0, LEDS_GPIO_DEFSTATE_OFF},
 305         {"bt",          NULL, HTCPLD_GPIO_LED_BT,          0, 0, LEDS_GPIO_DEFSTATE_OFF},
 306         {"caps",        NULL, HTCPLD_GPIO_LED_CAPS,        0, 0, LEDS_GPIO_DEFSTATE_OFF},
 307         {"alt",         NULL, HTCPLD_GPIO_LED_ALT,         0, 0, LEDS_GPIO_DEFSTATE_OFF},
 308 };
 309
 310 static struct gpio_led_platform_data gpio_leds_data = {
 311         .leds           = gpio_leds,
 312         .num_leds       = ARRAY_SIZE(gpio_leds),
 313 };
 314
 315 static struct platform_device gpio_leds_device = {
 316         .name           = "leds-gpio",
 317         .id             = 0,
 318         .dev    = {
 319                 .platform_data  = &gpio_leds_data,
 320         },
 321 };
 322
 323 /* HTC PLD chips */
 324
 325 static struct resource htcpld_resources[] = {
 326         [0] = {
 327                 .start  = OMAP_GPIO_IRQ(HTCHERALD_GIRQ_BTNS),
 328                 .end    = OMAP_GPIO_IRQ(HTCHERALD_GIRQ_BTNS),
 329                 .flags  = IORESOURCE_IRQ,
 330         },
 331 };
 332
 333 static struct htcpld_chip_platform_data htcpld_chips[] = {
 334         [0] = {
 335                 .addr           = 0x03,
 336                 .reset          = 0x04,
 337                 .num_gpios      = 8,
 338                 .gpio_out_base  = HTCPLD_BASE(0, 0),
 339                 .gpio_in_base   = HTCPLD_BASE(4, 0),
 340         },
 341         [1] = {
 342                 .addr           = 0x04,
 343                 .reset          = 0x8e,
 344                 .num_gpios      = 8,
 345                 .gpio_out_base  = HTCPLD_BASE(1, 0),
 346                 .gpio_in_base   = HTCPLD_BASE(5, 0),
 347         },
 348         [2] = {
 349                 .addr           = 0x05,
 350                 .reset          = 0x80,
 351                 .num_gpios      = 8,
 352                 .gpio_out_base  = HTCPLD_BASE(2, 0),
 353                 .gpio_in_base   = HTCPLD_BASE(6, 0),
 354                 .irq_base       = HTCPLD_IRQ(0, 0),
 355                 .num_irqs       = 8,
 356         },
 357         [3] = {
 358                 .addr           = 0x06,
 359                 .reset          = 0x40,
 360                 .num_gpios      = 8,
 361                 .gpio_out_base  = HTCPLD_BASE(3, 0),
 362                 .gpio_in_base   = HTCPLD_BASE(7, 0),
 363                 .irq_base       = HTCPLD_IRQ(1, 0),
 364                 .num_irqs       = 8,
 365         },
 366 };
 367
 368 static struct htcpld_core_platform_data htcpld_pfdata = {
 369         .int_reset_gpio_hi = HTCPLD_GPIO_INT_RESET_HI,
 370         .int_reset_gpio_lo = HTCPLD_GPIO_INT_RESET_LO,
 371         .i2c_adapter_id    = 1,
 372
 373         .chip              = htcpld_chips,
 374         .num_chip          = ARRAY_SIZE(htcpld_chips),
 375 };
 376
 377 static struct platform_device htcpld_device = {
 378         .name           = "i2c-htcpld",
 379         .id             = -1,
 380         .resource       = htcpld_resources,
 381         .num_resources  = ARRAY_SIZE(htcpld_resources),
 382         .dev    = {
 383                 .platform_data  = &htcpld_pfdata,
 384         },
 385 };
 386
 387 /* USB Device */
 388 static struct omap_usb_config htcherald_usb_config __initdata = {
 389         .otg = 0,
 390         .register_host = 0,
 391         .register_dev  = 1,
 392         .hmc_mode = 4,
 393         .pins[0] = 2,
 394 };
 395
 396 /* LCD Device resources */
 397 static struct omap_lcd_config htcherald_lcd_config __initdata = {
 398         .ctrl_name      = "internal",
 399 };
 400
 401 static struct omap_board_config_kernel htcherald_config[] __initdata = {
 402         { OMAP_TAG_LCD, &htcherald_lcd_config },
 403 };
 404
 405 static struct platform_device lcd_device = {
 406         .name           = "lcd_htcherald",
 407         .id             = -1,
 408 };
 409
 410 /* MMC Card */
 411 #if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
 412 static struct omap_mmc_platform_data htc_mmc1_data = {
 413         .nr_slots                       = 1,
 414         .switch_slot                    = NULL,
 415         .slots[0]       = {
 416                 .ocr_mask               = MMC_VDD_32_33 | MMC_VDD_33_34,
 417                 .name                   = "mmcblk",
 418                 .nomux                  = 1,
 419                 .wires                  = 4,
 420                 .switch_pin             = -1,
 421         },
 422 };
 423
 424 static struct omap_mmc_platform_data *htc_mmc_data[1];
 425 #endif
 426
 427
 428 /* Platform devices for the Herald */
 429 static struct platform_device *devices[] __initdata = {
 430         &kp_device,
 431         &lcd_device,
 432         &htcpld_device,
 433         &gpio_leds_device,
 434         &herald_gpiokeys_device,
 435 };
 436
 437 /*
 438  * Touchscreen
 439  */
 440 static const struct ads7846_platform_data htcherald_ts_platform_data = {
 441         .model                  = 7846,
 442         .keep_vref_on           = 1,
 443         .x_plate_ohms           = 496,
 444         .gpio_pendown           = HTCHERALD_GPIO_TS,
 445         .pressure_max           = 10000,
 446         .pressure_min           = 5000,
 447         .x_min                  = 528,
 448         .x_max                  = 3760,
 449         .y_min                  = 624,
 450         .y_max                  = 3760,
 451 };
 452
 453 static struct spi_board_info __initdata htcherald_spi_board_info[] = {
 454         {
 455                 .modalias               = "ads7846",
 456                 .platform_data          = &htcherald_ts_platform_data,
 457                 .irq                    = OMAP_GPIO_IRQ(HTCHERALD_GPIO_TS),
 458                 .max_speed_hz           = 2500000,
 459                 .bus_num                = 2,
 460                 .chip_select            = 1,
 461         }
 462 };
 463
 464 /*
 465  * Init functions from here on
 466  */
 467
 468 static void __init htcherald_lcd_init(void)
 469 {
 470         u32 reg;
 471         unsigned int tries = 200;
 472
 473         /* disable controller if active */
 474         reg = omap_readl(OMAP_LCDC_CONTROL);
 475         if (reg & OMAP_LCDC_CTRL_LCD_EN) {
 476                 reg &= ~OMAP_LCDC_CTRL_LCD_EN;
 477                 omap_writel(reg, OMAP_LCDC_CONTROL);
 478
 479                 /* wait for end of frame */
 480                 while (!(omap_readl(OMAP_LCDC_STATUS) & OMAP_LCDC_STAT_DONE)) {
 481                         tries--;
 482                         if (!tries)
 483                                 break;
 484                 }
 485                 if (!tries)
 486                         printk(KERN_WARNING "Timeout waiting for end of frame "
 487                                "-- LCD may not be available\n");
 488
 489                 /* turn off DMA */
 490                 reg = omap_readw(OMAP_DMA_LCD_CCR);
 491                 reg &= ~(1 << 7);
 492                 omap_writew(reg, OMAP_DMA_LCD_CCR);
 493
 494                 reg = omap_readw(OMAP_DMA_LCD_CTRL);
 495                 reg &= ~(1 << 8);
 496                 omap_writew(reg, OMAP_DMA_LCD_CTRL);
 497         }
 498 }
 499
 500 static void __init htcherald_map_io(void)
 501 {
 502         omap7xx_map_io();
 503
 504         /*
 505          * The LCD panel must be disabled and DMA turned off here, as doing
 506          * it later causes the LCD never to reinitialize.
 507          */
 508         htcherald_lcd_init();
 509
 510         printk(KERN_INFO "htcherald_map_io done.\n");
 511 }
 512
 513 static void __init htcherald_disable_watchdog(void)
 514 {
 515         /* Disable watchdog if running */
 516         if (omap_readl(OMAP_WDT_TIMER_MODE) & 0x8000) {
 517                 /*
 518                  * disable a potentially running watchdog timer before
 519                  * it kills us.
 520                  */
 521                 printk(KERN_WARNING "OMAP850 Watchdog seems to be activated, disabling it for now.\n");
 522                 omap_writel(0xF5, OMAP_WDT_TIMER_MODE);
 523                 omap_writel(0xA0, OMAP_WDT_TIMER_MODE);
 524         }
 525 }
 526
 527 #define HTCHERALD_GPIO_USB_EN1 33
 528 #define HTCHERALD_GPIO_USB_EN2 73
 529 #define HTCHERALD_GPIO_USB_DM  35
 530 #define HTCHERALD_GPIO_USB_DP  36
 531
 532 static void __init htcherald_usb_enable(void)
 533 {
 534         unsigned int tries = 20;
 535         unsigned int value = 0;
 536
 537         /* Request the GPIOs we need to control here */
 538         if (gpio_request(HTCHERALD_GPIO_USB_EN1, "herald_usb") < 0)
 539                 goto err1;
 540
 541         if (gpio_request(HTCHERALD_GPIO_USB_EN2, "herald_usb") < 0)
 542                 goto err2;
 543
 544         if (gpio_request(HTCHERALD_GPIO_USB_DM, "herald_usb") < 0)
 545                 goto err3;
 546
 547         if (gpio_request(HTCHERALD_GPIO_USB_DP, "herald_usb") < 0)
 548                 goto err4;
 549
 550         /* force USB_EN GPIO to 0 */
 551         do {
 552                 /* output low */
 553                 gpio_direction_output(HTCHERALD_GPIO_USB_EN1, 0);
 554         } while ((value = gpio_get_value(HTCHERALD_GPIO_USB_EN1)) == 1 &&
 555                         --tries);
 556
 557         if (value == 1)
 558                 printk(KERN_WARNING "Unable to reset USB, trying to continue\n");
 559
 560         gpio_direction_output(HTCHERALD_GPIO_USB_EN2, 0); /* output low */
 561         gpio_direction_input(HTCHERALD_GPIO_USB_DM); /* input */
 562         gpio_direction_input(HTCHERALD_GPIO_USB_DP); /* input */
 563
 564         goto done;
 565
 566 err4:
 567         gpio_free(HTCHERALD_GPIO_USB_DM);
 568 err3:
 569         gpio_free(HTCHERALD_GPIO_USB_EN2);
 570 err2:
 571         gpio_free(HTCHERALD_GPIO_USB_EN1);
 572 err1:
 573         printk(KERN_ERR "Unabled to request GPIO for USB\n");
 574 done:
 575         printk(KERN_INFO "USB setup complete.\n");
 576 }
 577
 578 static void __init htcherald_init(void)
 579 {
 580         printk(KERN_INFO "HTC Herald init.\n");
 581
 582         /* Do board initialization before we register all the devices */
 583         omap_board_config = htcherald_config;
 584         omap_board_config_size = ARRAY_SIZE(htcherald_config);
 585         platform_add_devices(devices, ARRAY_SIZE(devices));
 586
 587         htcherald_disable_watchdog();
 588
 589         htcherald_usb_enable();
 590         omap1_usb_init(&htcherald_usb_config);
 591
 592         spi_register_board_info(htcherald_spi_board_info,
 593                 ARRAY_SIZE(htcherald_spi_board_info));
 594
 595         omap_register_i2c_bus(1, 100, NULL, 0);
 596
 597 #if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
 598         htc_mmc_data[0] = &htc_mmc1_data;
 599         omap1_init_mmc(htc_mmc_data, 1);
 600 #endif
 601 }
 602
 603 MACHINE_START(HERALD, "HTC Herald")
 604         /* Maintainer: Cory Maccarrone <darkstar6262@gmail.com> */
 605         /* Maintainer: wing-linux.sourceforge.net */
 606         .atag_offset    = 0x100,
 607         .map_io         = htcherald_map_io,
 608         .init_early     = omap1_init_early,
 609         .reserve        = omap_reserve,
 610         .init_irq       = omap1_init_irq,
 611         .init_machine   = htcherald_init,
 612         .timer          = &omap1_timer,
 613         .restart        = omap1_restart,
 614 MACHINE_END