linux/arch/arm/mach-omap1/board-htcherald.c
<<
>>
Prefs 
   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/delay.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#include <linux/omapfb.h>
  40#include <linux/platform_data/keypad-omap.h>
  41
  42#include <asm/mach-types.h>
  43#include <asm/mach/arch.h>
  44
  45#include <mach/omap7xx.h>
  46#include "mmc.h"
  47
  48#include <mach/irqs.h>
  49#include <mach/usb.h>
  50
  51#include "common.h"
  52
  53/* LCD register definition */
  54#define       OMAP_LCDC_CONTROL               (0xfffec000 + 0x00)
  55#define       OMAP_LCDC_STATUS                (0xfffec000 + 0x10)
  56#define       OMAP_DMA_LCD_CCR                (0xfffee300 + 0xc2)
  57#define       OMAP_DMA_LCD_CTRL               (0xfffee300 + 0xc4)
  58#define       OMAP_LCDC_CTRL_LCD_EN           (1 << 0)
  59#define       OMAP_LCDC_STAT_DONE             (1 << 0)
  60
  61/* GPIO definitions for the power button and keyboard slide switch */
  62#define HTCHERALD_GPIO_POWER 139
  63#define HTCHERALD_GPIO_SLIDE 174
  64#define HTCHERALD_GIRQ_BTNS 141
  65
  66/* GPIO definitions for the touchscreen */
  67#define HTCHERALD_GPIO_TS 76
  68
  69/* HTCPLD definitions */
  70
  71/*
  72 * CPLD Logic
  73 *
  74 * Chip 3 - 0x03
  75 *
  76 * Function            7 6 5 4  3 2 1 0
  77 * ------------------------------------
  78 * DPAD light          x x x x  x x x 1
  79 * SoundDev            x x x x  1 x x x
  80 * Screen white        1 x x x  x x x x
  81 * MMC power on        x x x x  x 1 x x
  82 * Happy times (n)     0 x x x  x 1 x x
  83 *
  84 * Chip 4 - 0x04
  85 *
  86 * Function            7 6 5 4  3 2 1 0
  87 * ------------------------------------
  88 * Keyboard light      x x x x  x x x 1
  89 * LCD Bright (4)      x x x x  x 1 1 x
  90 * LCD Bright (3)      x x x x  x 0 1 x
  91 * LCD Bright (2)      x x x x  x 1 0 x
  92 * LCD Bright (1)      x x x x  x 0 0 x
  93 * LCD Off             x x x x  0 x x x
  94 * LCD image (fb)      1 x x x  x x x x
  95 * LCD image (white)   0 x x x  x x x x
  96 * Caps lock LED       x x 1 x  x x x x
  97 *
  98 * Chip 5 - 0x05
  99 *
 100 * Function            7 6 5 4  3 2 1 0
 101 * ------------------------------------
 102 * Red (solid)         x x x x  x 1 x x
 103 * Red (flash)         x x x x  x x 1 x
 104 * Green (GSM flash)   x x x x  1 x x x
 105 * Green (GSM solid)   x x x 1  x x x x
 106 * Green (wifi flash)  x x 1 x  x x x x
 107 * Blue (bt flash)     x 1 x x  x x x x
 108 * DPAD Int Enable     1 x x x  x x x 0
 109 *
 110 * (Combinations of the above can be made for different colors.)
 111 * The direction pad interrupt enable must be set each time the
 112 * interrupt is handled.
 113 *
 114 * Chip 6 - 0x06
 115 *
 116 * Function            7 6 5 4  3 2 1 0
 117 * ------------------------------------
 118 * Vibrator            x x x x  1 x x x
 119 * Alt LED             x x x 1  x x x x
 120 * Screen white        1 x x x  x x x x
 121 * Screen white        x x 1 x  x x x x
 122 * Screen white        x 0 x x  x x x x
 123 * Enable kbd dpad     x x x x  x x 0 x
 124 * Happy Times         0 1 0 x  x x 0 x
 125 */
 126
 127/*
 128 * HTCPLD GPIO lines start 16 after OMAP_MAX_GPIO_LINES to account
 129 * for the 16 MPUIO lines.
 130 */
 131#define HTCPLD_GPIO_START_OFFSET        (OMAP_MAX_GPIO_LINES + 16)
 132#define HTCPLD_IRQ(chip, offset)        (OMAP_IRQ_END + 8 * (chip) + (offset))
 133#define HTCPLD_BASE(chip, offset)       \
 134        (HTCPLD_GPIO_START_OFFSET + 8 * (chip) + (offset))
 135
 136#define HTCPLD_GPIO_LED_DPAD            HTCPLD_BASE(0, 0)
 137#define HTCPLD_GPIO_LED_KBD             HTCPLD_BASE(1, 0)
 138#define HTCPLD_GPIO_LED_CAPS            HTCPLD_BASE(1, 5)
 139#define HTCPLD_GPIO_LED_RED_FLASH       HTCPLD_BASE(2, 1)
 140#define HTCPLD_GPIO_LED_RED_SOLID       HTCPLD_BASE(2, 2)
 141#define HTCPLD_GPIO_LED_GREEN_FLASH     HTCPLD_BASE(2, 3)
 142#define HTCPLD_GPIO_LED_GREEN_SOLID     HTCPLD_BASE(2, 4)
 143#define HTCPLD_GPIO_LED_WIFI            HTCPLD_BASE(2, 5)
 144#define HTCPLD_GPIO_LED_BT              HTCPLD_BASE(2, 6)
 145#define HTCPLD_GPIO_LED_VIBRATE         HTCPLD_BASE(3, 3)
 146#define HTCPLD_GPIO_LED_ALT             HTCPLD_BASE(3, 4)
 147
 148#define HTCPLD_GPIO_RIGHT_KBD           HTCPLD_BASE(6, 7)
 149#define HTCPLD_GPIO_UP_KBD              HTCPLD_BASE(6, 6)
 150#define HTCPLD_GPIO_LEFT_KBD            HTCPLD_BASE(6, 5)
 151#define HTCPLD_GPIO_DOWN_KBD            HTCPLD_BASE(6, 4)
 152
 153#define HTCPLD_GPIO_RIGHT_DPAD          HTCPLD_BASE(7, 7)
 154#define HTCPLD_GPIO_UP_DPAD             HTCPLD_BASE(7, 6)
 155#define HTCPLD_GPIO_LEFT_DPAD           HTCPLD_BASE(7, 5)
 156#define HTCPLD_GPIO_DOWN_DPAD           HTCPLD_BASE(7, 4)
 157#define HTCPLD_GPIO_ENTER_DPAD          HTCPLD_BASE(7, 3)
 158
 159/*
 160 * The htcpld chip requires a gpio write to a specific line
 161 * to re-enable interrupts after one has occurred.
 162 */
 163#define HTCPLD_GPIO_INT_RESET_HI        HTCPLD_BASE(2, 7)
 164#define HTCPLD_GPIO_INT_RESET_LO        HTCPLD_BASE(2, 0)
 165
 166/* Chip 5 */
 167#define HTCPLD_IRQ_RIGHT_KBD            HTCPLD_IRQ(0, 7)
 168#define HTCPLD_IRQ_UP_KBD               HTCPLD_IRQ(0, 6)
 169#define HTCPLD_IRQ_LEFT_KBD             HTCPLD_IRQ(0, 5)
 170#define HTCPLD_IRQ_DOWN_KBD             HTCPLD_IRQ(0, 4)
 171
 172/* Chip 6 */
 173#define HTCPLD_IRQ_RIGHT_DPAD           HTCPLD_IRQ(1, 7)
 174#define HTCPLD_IRQ_UP_DPAD              HTCPLD_IRQ(1, 6)
 175#define HTCPLD_IRQ_LEFT_DPAD            HTCPLD_IRQ(1, 5)
 176#define HTCPLD_IRQ_DOWN_DPAD            HTCPLD_IRQ(1, 4)
 177#define HTCPLD_IRQ_ENTER_DPAD           HTCPLD_IRQ(1, 3)
 178
 179/* Keyboard definition */
 180
 181static const unsigned int htc_herald_keymap[] = {
 182        KEY(0, 0, KEY_RECORD), /* Mail button */
 183        KEY(1, 0, KEY_CAMERA), /* Camera */
 184        KEY(2, 0, KEY_PHONE), /* Send key */
 185        KEY(3, 0, KEY_VOLUMEUP), /* Volume up */
 186        KEY(4, 0, KEY_F2),  /* Right bar (landscape) */
 187        KEY(5, 0, KEY_MAIL), /* Win key (portrait) */
 188        KEY(6, 0, KEY_DIRECTORY), /* Right bar (protrait) */
 189        KEY(0, 1, KEY_LEFTCTRL), /* Windows key */
 190        KEY(1, 1, KEY_COMMA),
 191        KEY(2, 1, KEY_M),
 192        KEY(3, 1, KEY_K),
 193        KEY(4, 1, KEY_SLASH), /* OK key */
 194        KEY(5, 1, KEY_I),
 195        KEY(6, 1, KEY_U),
 196        KEY(0, 2, KEY_LEFTALT),
 197        KEY(1, 2, KEY_TAB),
 198        KEY(2, 2, KEY_N),
 199        KEY(3, 2, KEY_J),
 200        KEY(4, 2, KEY_ENTER),
 201        KEY(5, 2, KEY_H),
 202        KEY(6, 2, KEY_Y),
 203        KEY(0, 3, KEY_SPACE),
 204        KEY(1, 3, KEY_L),
 205        KEY(2, 3, KEY_B),
 206        KEY(3, 3, KEY_V),
 207        KEY(4, 3, KEY_BACKSPACE),
 208        KEY(5, 3, KEY_G),
 209        KEY(6, 3, KEY_T),
 210        KEY(0, 4, KEY_CAPSLOCK), /* Shift */
 211        KEY(1, 4, KEY_C),
 212        KEY(2, 4, KEY_F),
 213        KEY(3, 4, KEY_R),
 214        KEY(4, 4, KEY_O),
 215        KEY(5, 4, KEY_E),
 216        KEY(6, 4, KEY_D),
 217        KEY(0, 5, KEY_X),
 218        KEY(1, 5, KEY_Z),
 219        KEY(2, 5, KEY_S),
 220        KEY(3, 5, KEY_W),
 221        KEY(4, 5, KEY_P),
 222        KEY(5, 5, KEY_Q),
 223        KEY(6, 5, KEY_A),
 224        KEY(0, 6, KEY_CONNECT), /* Voice button */
 225        KEY(2, 6, KEY_CANCEL), /* End key */
 226        KEY(3, 6, KEY_VOLUMEDOWN), /* Volume down */
 227        KEY(4, 6, KEY_F1), /* Left bar (landscape) */
 228        KEY(5, 6, KEY_WWW), /* OK button (portrait) */
 229        KEY(6, 6, KEY_CALENDAR), /* Left bar (portrait) */
 230};
 231
 232static const struct matrix_keymap_data htc_herald_keymap_data = {
 233        .keymap         = htc_herald_keymap,
 234        .keymap_size    = ARRAY_SIZE(htc_herald_keymap),
 235};
 236
 237static struct omap_kp_platform_data htcherald_kp_data = {
 238        .rows   = 7,
 239        .cols   = 7,
 240        .delay = 20,
 241        .rep = true,
 242        .keymap_data = &htc_herald_keymap_data,
 243};
 244
 245static struct resource kp_resources[] = {
 246        [0] = {
 247                .start  = INT_7XX_MPUIO_KEYPAD,
 248                .end    = INT_7XX_MPUIO_KEYPAD,
 249                .flags  = IORESOURCE_IRQ,
 250        },
 251};
 252
 253static struct platform_device kp_device = {
 254        .name           = "omap-keypad",
 255        .id             = -1,
 256        .dev            = {
 257                .platform_data = &htcherald_kp_data,
 258        },
 259        .num_resources  = ARRAY_SIZE(kp_resources),
 260        .resource       = kp_resources,
 261};
 262
 263/* GPIO buttons for keyboard slide and power button */
 264static struct gpio_keys_button herald_gpio_keys_table[] = {
 265        {BTN_0,  HTCHERALD_GPIO_POWER, 1, "POWER", EV_KEY, 1, 20},
 266        {SW_LID, HTCHERALD_GPIO_SLIDE, 0, "SLIDE", EV_SW,  1, 20},
 267
 268        {KEY_LEFT,  HTCPLD_GPIO_LEFT_KBD,  1, "LEFT",  EV_KEY, 1, 20},
 269        {KEY_RIGHT, HTCPLD_GPIO_RIGHT_KBD, 1, "RIGHT", EV_KEY, 1, 20},
 270        {KEY_UP,    HTCPLD_GPIO_UP_KBD,    1, "UP",    EV_KEY, 1, 20},
 271        {KEY_DOWN,  HTCPLD_GPIO_DOWN_KBD,  1, "DOWN",  EV_KEY, 1, 20},
 272
 273        {KEY_LEFT,  HTCPLD_GPIO_LEFT_DPAD,   1, "DLEFT",  EV_KEY, 1, 20},
 274        {KEY_RIGHT, HTCPLD_GPIO_RIGHT_DPAD,  1, "DRIGHT", EV_KEY, 1, 20},
 275        {KEY_UP,    HTCPLD_GPIO_UP_DPAD,     1, "DUP",    EV_KEY, 1, 20},
 276        {KEY_DOWN,  HTCPLD_GPIO_DOWN_DPAD,   1, "DDOWN",  EV_KEY, 1, 20},
 277        {KEY_ENTER, HTCPLD_GPIO_ENTER_DPAD,  1, "DENTER", EV_KEY, 1, 20},
 278};
 279
 280static struct gpio_keys_platform_data herald_gpio_keys_data = {
 281        .buttons        = herald_gpio_keys_table,
 282        .nbuttons       = ARRAY_SIZE(herald_gpio_keys_table),
 283        .rep            = true,
 284};
 285
 286static struct platform_device herald_gpiokeys_device = {
 287        .name      = "gpio-keys",
 288        .id             = -1,
 289        .dev = {
 290                .platform_data = &herald_gpio_keys_data,
 291        },
 292};
 293
 294/* LEDs for the Herald.  These connect to the HTCPLD GPIO device. */
 295static struct gpio_led gpio_leds[] = {
 296        {"dpad",        NULL, HTCPLD_GPIO_LED_DPAD,        0, 0, LEDS_GPIO_DEFSTATE_OFF},
 297        {"kbd",         NULL, HTCPLD_GPIO_LED_KBD,         0, 0, LEDS_GPIO_DEFSTATE_OFF},
 298        {"vibrate",     NULL, HTCPLD_GPIO_LED_VIBRATE,     0, 0, LEDS_GPIO_DEFSTATE_OFF},
 299        {"green_solid", NULL, HTCPLD_GPIO_LED_GREEN_SOLID, 0, 0, LEDS_GPIO_DEFSTATE_OFF},
 300        {"green_flash", NULL, HTCPLD_GPIO_LED_GREEN_FLASH, 0, 0, LEDS_GPIO_DEFSTATE_OFF},
 301        {"red_solid",   "mmc0", HTCPLD_GPIO_LED_RED_SOLID, 0, 0, LEDS_GPIO_DEFSTATE_OFF},
 302        {"red_flash",   NULL, HTCPLD_GPIO_LED_RED_FLASH,   0, 0, LEDS_GPIO_DEFSTATE_OFF},
 303        {"wifi",        NULL, HTCPLD_GPIO_LED_WIFI,        0, 0, LEDS_GPIO_DEFSTATE_OFF},
 304        {"bt",          NULL, HTCPLD_GPIO_LED_BT,          0, 0, LEDS_GPIO_DEFSTATE_OFF},
 305        {"caps",        NULL, HTCPLD_GPIO_LED_CAPS,        0, 0, LEDS_GPIO_DEFSTATE_OFF},
 306        {"alt",         NULL, HTCPLD_GPIO_LED_ALT,         0, 0, LEDS_GPIO_DEFSTATE_OFF},
 307};
 308
 309static struct gpio_led_platform_data gpio_leds_data = {
 310        .leds           = gpio_leds,
 311        .num_leds       = ARRAY_SIZE(gpio_leds),
 312};
 313
 314static struct platform_device gpio_leds_device = {
 315        .name           = "leds-gpio",
 316        .id             = 0,
 317        .dev    = {
 318                .platform_data  = &gpio_leds_data,
 319        },
 320};
 321
 322/* HTC PLD chips */
 323
 324static struct resource htcpld_resources[] = {
 325        [0] = {
 326                .flags  = IORESOURCE_IRQ,
 327        },
 328};
 329
 330static struct htcpld_chip_platform_data htcpld_chips[] = {
 331        [0] = {
 332                .addr           = 0x03,
 333                .reset          = 0x04,
 334                .num_gpios      = 8,
 335                .gpio_out_base  = HTCPLD_BASE(0, 0),
 336                .gpio_in_base   = HTCPLD_BASE(4, 0),
 337        },
 338        [1] = {
 339                .addr           = 0x04,
 340                .reset          = 0x8e,
 341                .num_gpios      = 8,
 342                .gpio_out_base  = HTCPLD_BASE(1, 0),
 343                .gpio_in_base   = HTCPLD_BASE(5, 0),
 344        },
 345        [2] = {
 346                .addr           = 0x05,
 347                .reset          = 0x80,
 348                .num_gpios      = 8,
 349                .gpio_out_base  = HTCPLD_BASE(2, 0),
 350                .gpio_in_base   = HTCPLD_BASE(6, 0),
 351                .irq_base       = HTCPLD_IRQ(0, 0),
 352                .num_irqs       = 8,
 353        },
 354        [3] = {
 355                .addr           = 0x06,
 356                .reset          = 0x40,
 357                .num_gpios      = 8,
 358                .gpio_out_base  = HTCPLD_BASE(3, 0),
 359                .gpio_in_base   = HTCPLD_BASE(7, 0),
 360                .irq_base       = HTCPLD_IRQ(1, 0),
 361                .num_irqs       = 8,
 362        },
 363};
 364
 365static struct htcpld_core_platform_data htcpld_pfdata = {
 366        .int_reset_gpio_hi = HTCPLD_GPIO_INT_RESET_HI,
 367        .int_reset_gpio_lo = HTCPLD_GPIO_INT_RESET_LO,
 368        .i2c_adapter_id    = 1,
 369
 370        .chip              = htcpld_chips,
 371        .num_chip          = ARRAY_SIZE(htcpld_chips),
 372};
 373
 374static struct platform_device htcpld_device = {
 375        .name           = "i2c-htcpld",
 376        .id             = -1,
 377        .resource       = htcpld_resources,
 378        .num_resources  = ARRAY_SIZE(htcpld_resources),
 379        .dev    = {
 380                .platform_data  = &htcpld_pfdata,
 381        },
 382};
 383
 384/* USB Device */
 385static struct omap_usb_config htcherald_usb_config __initdata = {
 386        .otg = 0,
 387        .register_host = 0,
 388        .register_dev  = 1,
 389        .hmc_mode = 4,
 390        .pins[0] = 2,
 391};
 392
 393/* LCD Device resources */
 394static struct omap_lcd_config htcherald_lcd_config __initdata = {
 395        .ctrl_name      = "internal",
 396};
 397
 398static struct platform_device lcd_device = {
 399        .name           = "lcd_htcherald",
 400        .id             = -1,
 401};
 402
 403/* MMC Card */
 404#if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
 405static struct omap_mmc_platform_data htc_mmc1_data = {
 406        .nr_slots                       = 1,
 407        .switch_slot                    = NULL,
 408        .slots[0]       = {
 409                .ocr_mask               = MMC_VDD_32_33 | MMC_VDD_33_34,
 410                .name                   = "mmcblk",
 411                .nomux                  = 1,
 412                .wires                  = 4,
 413                .switch_pin             = -1,
 414        },
 415};
 416
 417static struct omap_mmc_platform_data *htc_mmc_data[1];
 418#endif
 419
 420
 421/* Platform devices for the Herald */
 422static struct platform_device *devices[] __initdata = {
 423        &kp_device,
 424        &lcd_device,
 425        &htcpld_device,
 426        &gpio_leds_device,
 427        &herald_gpiokeys_device,
 428};
 429
 430/*
 431 * Touchscreen
 432 */
 433static const struct ads7846_platform_data htcherald_ts_platform_data = {
 434        .model                  = 7846,
 435        .keep_vref_on           = 1,
 436        .x_plate_ohms           = 496,
 437        .gpio_pendown           = HTCHERALD_GPIO_TS,
 438        .pressure_max           = 10000,
 439        .pressure_min           = 5000,
 440        .x_min                  = 528,
 441        .x_max                  = 3760,
 442        .y_min                  = 624,
 443        .y_max                  = 3760,
 444};
 445
 446static struct spi_board_info __initdata htcherald_spi_board_info[] = {
 447        {
 448                .modalias               = "ads7846",
 449                .platform_data          = &htcherald_ts_platform_data,
 450                .max_speed_hz           = 2500000,
 451                .bus_num                = 2,
 452                .chip_select            = 1,
 453        }
 454};
 455
 456/*
 457 * Init functions from here on
 458 */
 459
 460static void __init htcherald_lcd_init(void)
 461{
 462        u32 reg;
 463        unsigned int tries = 200;
 464
 465        /* disable controller if active */
 466        reg = omap_readl(OMAP_LCDC_CONTROL);
 467        if (reg & OMAP_LCDC_CTRL_LCD_EN) {
 468                reg &= ~OMAP_LCDC_CTRL_LCD_EN;
 469                omap_writel(reg, OMAP_LCDC_CONTROL);
 470
 471                /* wait for end of frame */
 472                while (!(omap_readl(OMAP_LCDC_STATUS) & OMAP_LCDC_STAT_DONE)) {
 473                        tries--;
 474                        if (!tries)
 475                                break;
 476                }
 477                if (!tries)
 478                        pr_err("Timeout waiting for end of frame -- LCD may not be available\n");
 479
 480                /* turn off DMA */
 481                reg = omap_readw(OMAP_DMA_LCD_CCR);
 482                reg &= ~(1 << 7);
 483                omap_writew(reg, OMAP_DMA_LCD_CCR);
 484
 485                reg = omap_readw(OMAP_DMA_LCD_CTRL);
 486                reg &= ~(1 << 8);
 487                omap_writew(reg, OMAP_DMA_LCD_CTRL);
 488        }
 489}
 490
 491static void __init htcherald_map_io(void)
 492{
 493        omap7xx_map_io();
 494
 495        /*
 496         * The LCD panel must be disabled and DMA turned off here, as doing
 497         * it later causes the LCD never to reinitialize.
 498         */
 499        htcherald_lcd_init();
 500
 501        printk(KERN_INFO "htcherald_map_io done.\n");
 502}
 503
 504static void __init htcherald_disable_watchdog(void)
 505{
 506        /* Disable watchdog if running */
 507        if (omap_readl(OMAP_WDT_TIMER_MODE) & 0x8000) {
 508                /*
 509                 * disable a potentially running watchdog timer before
 510                 * it kills us.
 511                 */
 512                printk(KERN_WARNING "OMAP850 Watchdog seems to be activated, disabling it for now.\n");
 513                omap_writel(0xF5, OMAP_WDT_TIMER_MODE);
 514                omap_writel(0xA0, OMAP_WDT_TIMER_MODE);
 515        }
 516}
 517
 518#define HTCHERALD_GPIO_USB_EN1 33
 519#define HTCHERALD_GPIO_USB_EN2 73
 520#define HTCHERALD_GPIO_USB_DM  35
 521#define HTCHERALD_GPIO_USB_DP  36
 522
 523static void __init htcherald_usb_enable(void)
 524{
 525        unsigned int tries = 20;
 526        unsigned int value = 0;
 527
 528        /* Request the GPIOs we need to control here */
 529        if (gpio_request(HTCHERALD_GPIO_USB_EN1, "herald_usb") < 0)
 530                goto err1;
 531
 532        if (gpio_request(HTCHERALD_GPIO_USB_EN2, "herald_usb") < 0)
 533                goto err2;
 534
 535        if (gpio_request(HTCHERALD_GPIO_USB_DM, "herald_usb") < 0)
 536                goto err3;
 537
 538        if (gpio_request(HTCHERALD_GPIO_USB_DP, "herald_usb") < 0)
 539                goto err4;
 540
 541        /* force USB_EN GPIO to 0 */
 542        do {
 543                /* output low */
 544                gpio_direction_output(HTCHERALD_GPIO_USB_EN1, 0);
 545        } while ((value = gpio_get_value(HTCHERALD_GPIO_USB_EN1)) == 1 &&
 546                        --tries);
 547
 548        if (value == 1)
 549                printk(KERN_WARNING "Unable to reset USB, trying to continue\n");
 550
 551        gpio_direction_output(HTCHERALD_GPIO_USB_EN2, 0); /* output low */
 552        gpio_direction_input(HTCHERALD_GPIO_USB_DM); /* input */
 553        gpio_direction_input(HTCHERALD_GPIO_USB_DP); /* input */
 554
 555        goto done;
 556
 557err4:
 558        gpio_free(HTCHERALD_GPIO_USB_DM);
 559err3:
 560        gpio_free(HTCHERALD_GPIO_USB_EN2);
 561err2:
 562        gpio_free(HTCHERALD_GPIO_USB_EN1);
 563err1:
 564        printk(KERN_ERR "Unabled to request GPIO for USB\n");
 565done:
 566        printk(KERN_INFO "USB setup complete.\n");
 567}
 568
 569static void __init htcherald_init(void)
 570{
 571        printk(KERN_INFO "HTC Herald init.\n");
 572
 573        /* Do board initialization before we register all the devices */
 574        htcpld_resources[0].start = gpio_to_irq(HTCHERALD_GIRQ_BTNS);
 575        htcpld_resources[0].end = gpio_to_irq(HTCHERALD_GIRQ_BTNS);
 576        platform_add_devices(devices, ARRAY_SIZE(devices));
 577
 578        htcherald_disable_watchdog();
 579
 580        htcherald_usb_enable();
 581        omap1_usb_init(&htcherald_usb_config);
 582
 583        htcherald_spi_board_info[0].irq = gpio_to_irq(HTCHERALD_GPIO_TS);
 584        spi_register_board_info(htcherald_spi_board_info,
 585                ARRAY_SIZE(htcherald_spi_board_info));
 586
 587        omap_register_i2c_bus(1, 100, NULL, 0);
 588
 589#if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
 590        htc_mmc_data[0] = &htc_mmc1_data;
 591        omap1_init_mmc(htc_mmc_data, 1);
 592#endif
 593
 594        omapfb_set_lcd_config(&htcherald_lcd_config);
 595}
 596
 597MACHINE_START(HERALD, "HTC Herald")
 598        /* Maintainer: Cory Maccarrone <darkstar6262@gmail.com> */
 599        /* Maintainer: wing-linux.sourceforge.net */
 600        .atag_offset    = 0x100,
 601        .map_io         = htcherald_map_io,
 602        .init_early     = omap1_init_early,
 603        .init_irq       = omap1_init_irq,
 604        .init_machine   = htcherald_init,
 605        .init_late      = omap1_init_late,
 606        .init_time      = omap1_timer_init,
 607        .restart        = omap1_restart,
 608MACHINE_END
 609
Hosted by Missing Link Electronics. The original LXR software by the LXR community, this experimental version by lxr@linux.no.