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

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * HTC Herald board configuration
   4  * Copyright (C) 2009 Cory Maccarrone <darkstar6262@gmail.com>
   5  * Copyright (C) 2009 Wing Linux
   6  *
   7  * Based on the board-htcwizard.c file from the linwizard project:
   8  * Copyright (C) 2006 Unai Uribarri
   9  * Copyright (C) 2008 linwizard.sourceforge.net
  10  */
  11 #include <linux/kernel.h>
  12 #include <linux/init.h>
  13 #include <linux/platform_device.h>
  14 #include <linux/input.h>
  15 #include <linux/delay.h>
  16 #include <linux/gpio.h>
  17 #include <linux/gpio_keys.h>
  18 #include <linux/i2c.h>
  19 #include <linux/platform_data/i2c-gpio.h>
  20 #include <linux/htcpld.h>
  21 #include <linux/leds.h>
  22 #include <linux/spi/spi.h>
  23 #include <linux/spi/ads7846.h>
  24 #include <linux/omapfb.h>
  25 #include <linux/platform_data/keypad-omap.h>
  26
  27 #include <asm/mach-types.h>
  28 #include <asm/mach/arch.h>
  29
  30 #include <mach/omap7xx.h>
  31 #include "mmc.h"
  32
  33 #include <mach/irqs.h>
  34 #include <mach/usb.h>
  35
  36 #include "common.h"
  37
  38 /* LCD register definition */
  39 #define       OMAP_LCDC_CONTROL               (0xfffec000 + 0x00)
  40 #define       OMAP_LCDC_STATUS                (0xfffec000 + 0x10)
  41 #define       OMAP_DMA_LCD_CCR                (0xfffee300 + 0xc2)
  42 #define       OMAP_DMA_LCD_CTRL               (0xfffee300 + 0xc4)
  43 #define       OMAP_LCDC_CTRL_LCD_EN           (1 << 0)
  44 #define       OMAP_LCDC_STAT_DONE             (1 << 0)
  45
  46 /* GPIO definitions for the power button and keyboard slide switch */
  47 #define HTCHERALD_GPIO_POWER 139
  48 #define HTCHERALD_GPIO_SLIDE 174
  49 #define HTCHERALD_GIRQ_BTNS 141
  50
  51 /* GPIO definitions for the touchscreen */
  52 #define HTCHERALD_GPIO_TS 76
  53
  54 /* HTCPLD definitions */
  55
  56 /*
  57  * CPLD Logic
  58  *
  59  * Chip 3 - 0x03
  60  *
  61  * Function            7 6 5 4  3 2 1 0
  62  * ------------------------------------
  63  * DPAD light          x x x x  x x x 1
  64  * SoundDev            x x x x  1 x x x
  65  * Screen white        1 x x x  x x x x
  66  * MMC power on        x x x x  x 1 x x
  67  * Happy times (n)     0 x x x  x 1 x x
  68  *
  69  * Chip 4 - 0x04
  70  *
  71  * Function            7 6 5 4  3 2 1 0
  72  * ------------------------------------
  73  * Keyboard light      x x x x  x x x 1
  74  * LCD Bright (4)      x x x x  x 1 1 x
  75  * LCD Bright (3)      x x x x  x 0 1 x
  76  * LCD Bright (2)      x x x x  x 1 0 x
  77  * LCD Bright (1)      x x x x  x 0 0 x
  78  * LCD Off             x x x x  0 x x x
  79  * LCD image (fb)      1 x x x  x x x x
  80  * LCD image (white)   0 x x x  x x x x
  81  * Caps lock LED       x x 1 x  x x x x
  82  *
  83  * Chip 5 - 0x05
  84  *
  85  * Function            7 6 5 4  3 2 1 0
  86  * ------------------------------------
  87  * Red (solid)         x x x x  x 1 x x
  88  * Red (flash)         x x x x  x x 1 x
  89  * Green (GSM flash)   x x x x  1 x x x
  90  * Green (GSM solid)   x x x 1  x x x x
  91  * Green (wifi flash)  x x 1 x  x x x x
  92  * Blue (bt flash)     x 1 x x  x x x x
  93  * DPAD Int Enable     1 x x x  x x x 0
  94  *
  95  * (Combinations of the above can be made for different colors.)
  96  * The direction pad interrupt enable must be set each time the
  97  * interrupt is handled.
  98  *
  99  * Chip 6 - 0x06
 100  *
 101  * Function            7 6 5 4  3 2 1 0
 102  * ------------------------------------
 103  * Vibrator            x x x x  1 x x x
 104  * Alt LED             x x x 1  x x x x
 105  * Screen white        1 x x x  x x x x
 106  * Screen white        x x 1 x  x x x x
 107  * Screen white        x 0 x x  x x x x
 108  * Enable kbd dpad     x x x x  x x 0 x
 109  * Happy Times         0 1 0 x  x x 0 x
 110  */
 111
 112 /*
 113  * HTCPLD GPIO lines start 16 after OMAP_MAX_GPIO_LINES to account
 114  * for the 16 MPUIO lines.
 115  */
 116 #define HTCPLD_GPIO_START_OFFSET        (OMAP_MAX_GPIO_LINES + 16)
 117 #define HTCPLD_IRQ(chip, offset)        (OMAP_IRQ_END + 8 * (chip) + (offset))
 118 #define HTCPLD_BASE(chip, offset)       \
 119         (HTCPLD_GPIO_START_OFFSET + 8 * (chip) + (offset))
 120
 121 #define HTCPLD_GPIO_LED_DPAD            HTCPLD_BASE(0, 0)
 122 #define HTCPLD_GPIO_LED_KBD             HTCPLD_BASE(1, 0)
 123 #define HTCPLD_GPIO_LED_CAPS            HTCPLD_BASE(1, 5)
 124 #define HTCPLD_GPIO_LED_RED_FLASH       HTCPLD_BASE(2, 1)
 125 #define HTCPLD_GPIO_LED_RED_SOLID       HTCPLD_BASE(2, 2)
 126 #define HTCPLD_GPIO_LED_GREEN_FLASH     HTCPLD_BASE(2, 3)
 127 #define HTCPLD_GPIO_LED_GREEN_SOLID     HTCPLD_BASE(2, 4)
 128 #define HTCPLD_GPIO_LED_WIFI            HTCPLD_BASE(2, 5)
 129 #define HTCPLD_GPIO_LED_BT              HTCPLD_BASE(2, 6)
 130 #define HTCPLD_GPIO_LED_VIBRATE         HTCPLD_BASE(3, 3)
 131 #define HTCPLD_GPIO_LED_ALT             HTCPLD_BASE(3, 4)
 132
 133 #define HTCPLD_GPIO_RIGHT_KBD           HTCPLD_BASE(6, 7)
 134 #define HTCPLD_GPIO_UP_KBD              HTCPLD_BASE(6, 6)
 135 #define HTCPLD_GPIO_LEFT_KBD            HTCPLD_BASE(6, 5)
 136 #define HTCPLD_GPIO_DOWN_KBD            HTCPLD_BASE(6, 4)
 137
 138 #define HTCPLD_GPIO_RIGHT_DPAD          HTCPLD_BASE(7, 7)
 139 #define HTCPLD_GPIO_UP_DPAD             HTCPLD_BASE(7, 6)
 140 #define HTCPLD_GPIO_LEFT_DPAD           HTCPLD_BASE(7, 5)
 141 #define HTCPLD_GPIO_DOWN_DPAD           HTCPLD_BASE(7, 4)
 142 #define HTCPLD_GPIO_ENTER_DPAD          HTCPLD_BASE(7, 3)
 143
 144 /*
 145  * The htcpld chip requires a gpio write to a specific line
 146  * to re-enable interrupts after one has occurred.
 147  */
 148 #define HTCPLD_GPIO_INT_RESET_HI        HTCPLD_BASE(2, 7)
 149 #define HTCPLD_GPIO_INT_RESET_LO        HTCPLD_BASE(2, 0)
 150
 151 /* Chip 5 */
 152 #define HTCPLD_IRQ_RIGHT_KBD            HTCPLD_IRQ(0, 7)
 153 #define HTCPLD_IRQ_UP_KBD               HTCPLD_IRQ(0, 6)
 154 #define HTCPLD_IRQ_LEFT_KBD             HTCPLD_IRQ(0, 5)
 155 #define HTCPLD_IRQ_DOWN_KBD             HTCPLD_IRQ(0, 4)
 156
 157 /* Chip 6 */
 158 #define HTCPLD_IRQ_RIGHT_DPAD           HTCPLD_IRQ(1, 7)
 159 #define HTCPLD_IRQ_UP_DPAD              HTCPLD_IRQ(1, 6)
 160 #define HTCPLD_IRQ_LEFT_DPAD            HTCPLD_IRQ(1, 5)
 161 #define HTCPLD_IRQ_DOWN_DPAD            HTCPLD_IRQ(1, 4)
 162 #define HTCPLD_IRQ_ENTER_DPAD           HTCPLD_IRQ(1, 3)
 163
 164 /* Keyboard definition */
 165
 166 static const unsigned int htc_herald_keymap[] = {
 167         KEY(0, 0, KEY_RECORD), /* Mail button */
 168         KEY(1, 0, KEY_CAMERA), /* Camera */
 169         KEY(2, 0, KEY_PHONE), /* Send key */
 170         KEY(3, 0, KEY_VOLUMEUP), /* Volume up */
 171         KEY(4, 0, KEY_F2),  /* Right bar (landscape) */
 172         KEY(5, 0, KEY_MAIL), /* Win key (portrait) */
 173         KEY(6, 0, KEY_DIRECTORY), /* Right bar (protrait) */
 174         KEY(0, 1, KEY_LEFTCTRL), /* Windows key */
 175         KEY(1, 1, KEY_COMMA),
 176         KEY(2, 1, KEY_M),
 177         KEY(3, 1, KEY_K),
 178         KEY(4, 1, KEY_SLASH), /* OK key */
 179         KEY(5, 1, KEY_I),
 180         KEY(6, 1, KEY_U),
 181         KEY(0, 2, KEY_LEFTALT),
 182         KEY(1, 2, KEY_TAB),
 183         KEY(2, 2, KEY_N),
 184         KEY(3, 2, KEY_J),
 185         KEY(4, 2, KEY_ENTER),
 186         KEY(5, 2, KEY_H),
 187         KEY(6, 2, KEY_Y),
 188         KEY(0, 3, KEY_SPACE),
 189         KEY(1, 3, KEY_L),
 190         KEY(2, 3, KEY_B),
 191         KEY(3, 3, KEY_V),
 192         KEY(4, 3, KEY_BACKSPACE),
 193         KEY(5, 3, KEY_G),
 194         KEY(6, 3, KEY_T),
 195         KEY(0, 4, KEY_CAPSLOCK), /* Shift */
 196         KEY(1, 4, KEY_C),
 197         KEY(2, 4, KEY_F),
 198         KEY(3, 4, KEY_R),
 199         KEY(4, 4, KEY_O),
 200         KEY(5, 4, KEY_E),
 201         KEY(6, 4, KEY_D),
 202         KEY(0, 5, KEY_X),
 203         KEY(1, 5, KEY_Z),
 204         KEY(2, 5, KEY_S),
 205         KEY(3, 5, KEY_W),
 206         KEY(4, 5, KEY_P),
 207         KEY(5, 5, KEY_Q),
 208         KEY(6, 5, KEY_A),
 209         KEY(0, 6, KEY_CONNECT), /* Voice button */
 210         KEY(2, 6, KEY_CANCEL), /* End key */
 211         KEY(3, 6, KEY_VOLUMEDOWN), /* Volume down */
 212         KEY(4, 6, KEY_F1), /* Left bar (landscape) */
 213         KEY(5, 6, KEY_WWW), /* OK button (portrait) */
 214         KEY(6, 6, KEY_CALENDAR), /* Left bar (portrait) */
 215 };
 216
 217 static const struct matrix_keymap_data htc_herald_keymap_data = {
 218         .keymap         = htc_herald_keymap,
 219         .keymap_size    = ARRAY_SIZE(htc_herald_keymap),
 220 };
 221
 222 static struct omap_kp_platform_data htcherald_kp_data = {
 223         .rows   = 7,
 224         .cols   = 7,
 225         .delay = 20,
 226         .rep = true,
 227         .keymap_data = &htc_herald_keymap_data,
 228 };
 229
 230 static struct resource kp_resources[] = {
 231         [0] = {
 232                 .start  = INT_7XX_MPUIO_KEYPAD,
 233                 .end    = INT_7XX_MPUIO_KEYPAD,
 234                 .flags  = IORESOURCE_IRQ,
 235         },
 236 };
 237
 238 static struct platform_device kp_device = {
 239         .name           = "omap-keypad",
 240         .id             = -1,
 241         .dev            = {
 242                 .platform_data = &htcherald_kp_data,
 243         },
 244         .num_resources  = ARRAY_SIZE(kp_resources),
 245         .resource       = kp_resources,
 246 };
 247
 248 /* GPIO buttons for keyboard slide and power button */
 249 static struct gpio_keys_button herald_gpio_keys_table[] = {
 250         {BTN_0,  HTCHERALD_GPIO_POWER, 1, "POWER", EV_KEY, 1, 20},
 251         {SW_LID, HTCHERALD_GPIO_SLIDE, 0, "SLIDE", EV_SW,  1, 20},
 252
 253         {KEY_LEFT,  HTCPLD_GPIO_LEFT_KBD,  1, "LEFT",  EV_KEY, 1, 20},
 254         {KEY_RIGHT, HTCPLD_GPIO_RIGHT_KBD, 1, "RIGHT", EV_KEY, 1, 20},
 255         {KEY_UP,    HTCPLD_GPIO_UP_KBD,    1, "UP",    EV_KEY, 1, 20},
 256         {KEY_DOWN,  HTCPLD_GPIO_DOWN_KBD,  1, "DOWN",  EV_KEY, 1, 20},
 257
 258         {KEY_LEFT,  HTCPLD_GPIO_LEFT_DPAD,   1, "DLEFT",  EV_KEY, 1, 20},
 259         {KEY_RIGHT, HTCPLD_GPIO_RIGHT_DPAD,  1, "DRIGHT", EV_KEY, 1, 20},
 260         {KEY_UP,    HTCPLD_GPIO_UP_DPAD,     1, "DUP",    EV_KEY, 1, 20},
 261         {KEY_DOWN,  HTCPLD_GPIO_DOWN_DPAD,   1, "DDOWN",  EV_KEY, 1, 20},
 262         {KEY_ENTER, HTCPLD_GPIO_ENTER_DPAD,  1, "DENTER", EV_KEY, 1, 20},
 263 };
 264
 265 static struct gpio_keys_platform_data herald_gpio_keys_data = {
 266         .buttons        = herald_gpio_keys_table,
 267         .nbuttons       = ARRAY_SIZE(herald_gpio_keys_table),
 268         .rep            = true,
 269 };
 270
 271 static struct platform_device herald_gpiokeys_device = {
 272         .name      = "gpio-keys",
 273         .id             = -1,
 274         .dev = {
 275                 .platform_data = &herald_gpio_keys_data,
 276         },
 277 };
 278
 279 /* LEDs for the Herald.  These connect to the HTCPLD GPIO device. */
 280 static const struct gpio_led gpio_leds[] = {
 281         {"dpad",        NULL, HTCPLD_GPIO_LED_DPAD,        0, 0, LEDS_GPIO_DEFSTATE_OFF},
 282         {"kbd",         NULL, HTCPLD_GPIO_LED_KBD,         0, 0, LEDS_GPIO_DEFSTATE_OFF},
 283         {"vibrate",     NULL, HTCPLD_GPIO_LED_VIBRATE,     0, 0, LEDS_GPIO_DEFSTATE_OFF},
 284         {"green_solid", NULL, HTCPLD_GPIO_LED_GREEN_SOLID, 0, 0, LEDS_GPIO_DEFSTATE_OFF},
 285         {"green_flash", NULL, HTCPLD_GPIO_LED_GREEN_FLASH, 0, 0, LEDS_GPIO_DEFSTATE_OFF},
 286         {"red_solid",   "mmc0", HTCPLD_GPIO_LED_RED_SOLID, 0, 0, LEDS_GPIO_DEFSTATE_OFF},
 287         {"red_flash",   NULL, HTCPLD_GPIO_LED_RED_FLASH,   0, 0, LEDS_GPIO_DEFSTATE_OFF},
 288         {"wifi",        NULL, HTCPLD_GPIO_LED_WIFI,        0, 0, LEDS_GPIO_DEFSTATE_OFF},
 289         {"bt",          NULL, HTCPLD_GPIO_LED_BT,          0, 0, LEDS_GPIO_DEFSTATE_OFF},
 290         {"caps",        NULL, HTCPLD_GPIO_LED_CAPS,        0, 0, LEDS_GPIO_DEFSTATE_OFF},
 291         {"alt",         NULL, HTCPLD_GPIO_LED_ALT,         0, 0, LEDS_GPIO_DEFSTATE_OFF},
 292 };
 293
 294 static struct gpio_led_platform_data gpio_leds_data = {
 295         .leds           = gpio_leds,
 296         .num_leds       = ARRAY_SIZE(gpio_leds),
 297 };
 298
 299 static struct platform_device gpio_leds_device = {
 300         .name           = "leds-gpio",
 301         .id             = 0,
 302         .dev    = {
 303                 .platform_data  = &gpio_leds_data,
 304         },
 305 };
 306
 307 /* HTC PLD chips */
 308
 309 static struct resource htcpld_resources[] = {
 310         [0] = {
 311                 .flags  = IORESOURCE_IRQ,
 312         },
 313 };
 314
 315 static struct htcpld_chip_platform_data htcpld_chips[] = {
 316         [0] = {
 317                 .addr           = 0x03,
 318                 .reset          = 0x04,
 319                 .num_gpios      = 8,
 320                 .gpio_out_base  = HTCPLD_BASE(0, 0),
 321                 .gpio_in_base   = HTCPLD_BASE(4, 0),
 322         },
 323         [1] = {
 324                 .addr           = 0x04,
 325                 .reset          = 0x8e,
 326                 .num_gpios      = 8,
 327                 .gpio_out_base  = HTCPLD_BASE(1, 0),
 328                 .gpio_in_base   = HTCPLD_BASE(5, 0),
 329         },
 330         [2] = {
 331                 .addr           = 0x05,
 332                 .reset          = 0x80,
 333                 .num_gpios      = 8,
 334                 .gpio_out_base  = HTCPLD_BASE(2, 0),
 335                 .gpio_in_base   = HTCPLD_BASE(6, 0),
 336                 .irq_base       = HTCPLD_IRQ(0, 0),
 337                 .num_irqs       = 8,
 338         },
 339         [3] = {
 340                 .addr           = 0x06,
 341                 .reset          = 0x40,
 342                 .num_gpios      = 8,
 343                 .gpio_out_base  = HTCPLD_BASE(3, 0),
 344                 .gpio_in_base   = HTCPLD_BASE(7, 0),
 345                 .irq_base       = HTCPLD_IRQ(1, 0),
 346                 .num_irqs       = 8,
 347         },
 348 };
 349
 350 static struct htcpld_core_platform_data htcpld_pfdata = {
 351         .int_reset_gpio_hi = HTCPLD_GPIO_INT_RESET_HI,
 352         .int_reset_gpio_lo = HTCPLD_GPIO_INT_RESET_LO,
 353         .i2c_adapter_id    = 1,
 354
 355         .chip              = htcpld_chips,
 356         .num_chip          = ARRAY_SIZE(htcpld_chips),
 357 };
 358
 359 static struct platform_device htcpld_device = {
 360         .name           = "i2c-htcpld",
 361         .id             = -1,
 362         .resource       = htcpld_resources,
 363         .num_resources  = ARRAY_SIZE(htcpld_resources),
 364         .dev    = {
 365                 .platform_data  = &htcpld_pfdata,
 366         },
 367 };
 368
 369 /* USB Device */
 370 static struct omap_usb_config htcherald_usb_config __initdata = {
 371         .otg = 0,
 372         .register_host = 0,
 373         .register_dev  = 1,
 374         .hmc_mode = 4,
 375         .pins[0] = 2,
 376 };
 377
 378 /* LCD Device resources */
 379 static const struct omap_lcd_config htcherald_lcd_config __initconst = {
 380         .ctrl_name      = "internal",
 381 };
 382
 383 static struct platform_device lcd_device = {
 384         .name           = "lcd_htcherald",
 385         .id             = -1,
 386 };
 387
 388 /* MMC Card */
 389 #if IS_ENABLED(CONFIG_MMC_OMAP)
 390 static struct omap_mmc_platform_data htc_mmc1_data = {
 391         .nr_slots                       = 1,
 392         .switch_slot                    = NULL,
 393         .slots[0]       = {
 394                 .ocr_mask               = MMC_VDD_32_33 | MMC_VDD_33_34,
 395                 .name                   = "mmcblk",
 396                 .nomux                  = 1,
 397                 .wires                  = 4,
 398                 .switch_pin             = -1,
 399         },
 400 };
 401
 402 static struct omap_mmc_platform_data *htc_mmc_data[1];
 403 #endif
 404
 405
 406 /* Platform devices for the Herald */
 407 static struct platform_device *devices[] __initdata = {
 408         &kp_device,
 409         &lcd_device,
 410         &htcpld_device,
 411         &gpio_leds_device,
 412         &herald_gpiokeys_device,
 413 };
 414
 415 /*
 416  * Touchscreen
 417  */
 418 static const struct ads7846_platform_data htcherald_ts_platform_data = {
 419         .model                  = 7846,
 420         .keep_vref_on           = 1,
 421         .x_plate_ohms           = 496,
 422         .gpio_pendown           = HTCHERALD_GPIO_TS,
 423         .pressure_max           = 10000,
 424         .pressure_min           = 5000,
 425         .x_min                  = 528,
 426         .x_max                  = 3760,
 427         .y_min                  = 624,
 428         .y_max                  = 3760,
 429 };
 430
 431 static struct spi_board_info __initdata htcherald_spi_board_info[] = {
 432         {
 433                 .modalias               = "ads7846",
 434                 .platform_data          = &htcherald_ts_platform_data,
 435                 .max_speed_hz           = 2500000,
 436                 .bus_num                = 2,
 437                 .chip_select            = 1,
 438         }
 439 };
 440
 441 /*
 442  * Init functions from here on
 443  */
 444
 445 static void __init htcherald_lcd_init(void)
 446 {
 447         u32 reg;
 448         unsigned int tries = 200;
 449
 450         /* disable controller if active */
 451         reg = omap_readl(OMAP_LCDC_CONTROL);
 452         if (reg & OMAP_LCDC_CTRL_LCD_EN) {
 453                 reg &= ~OMAP_LCDC_CTRL_LCD_EN;
 454                 omap_writel(reg, OMAP_LCDC_CONTROL);
 455
 456                 /* wait for end of frame */
 457                 while (!(omap_readl(OMAP_LCDC_STATUS) & OMAP_LCDC_STAT_DONE)) {
 458                         tries--;
 459                         if (!tries)
 460                                 break;
 461                 }
 462                 if (!tries)
 463                         pr_err("Timeout waiting for end of frame -- LCD may not be available\n");
 464
 465                 /* turn off DMA */
 466                 reg = omap_readw(OMAP_DMA_LCD_CCR);
 467                 reg &= ~(1 << 7);
 468                 omap_writew(reg, OMAP_DMA_LCD_CCR);
 469
 470                 reg = omap_readw(OMAP_DMA_LCD_CTRL);
 471                 reg &= ~(1 << 8);
 472                 omap_writew(reg, OMAP_DMA_LCD_CTRL);
 473         }
 474 }
 475
 476 static void __init htcherald_map_io(void)
 477 {
 478         omap7xx_map_io();
 479
 480         /*
 481          * The LCD panel must be disabled and DMA turned off here, as doing
 482          * it later causes the LCD never to reinitialize.
 483          */
 484         htcherald_lcd_init();
 485
 486         printk(KERN_INFO "htcherald_map_io done.\n");
 487 }
 488
 489 static void __init htcherald_disable_watchdog(void)
 490 {
 491         /* Disable watchdog if running */
 492         if (omap_readl(OMAP_WDT_TIMER_MODE) & 0x8000) {
 493                 /*
 494                  * disable a potentially running watchdog timer before
 495                  * it kills us.
 496                  */
 497                 printk(KERN_WARNING "OMAP850 Watchdog seems to be activated, disabling it for now.\n");
 498                 omap_writel(0xF5, OMAP_WDT_TIMER_MODE);
 499                 omap_writel(0xA0, OMAP_WDT_TIMER_MODE);
 500         }
 501 }
 502
 503 #define HTCHERALD_GPIO_USB_EN1 33
 504 #define HTCHERALD_GPIO_USB_EN2 73
 505 #define HTCHERALD_GPIO_USB_DM  35
 506 #define HTCHERALD_GPIO_USB_DP  36
 507
 508 static void __init htcherald_usb_enable(void)
 509 {
 510         unsigned int tries = 20;
 511         unsigned int value = 0;
 512
 513         /* Request the GPIOs we need to control here */
 514         if (gpio_request(HTCHERALD_GPIO_USB_EN1, "herald_usb") < 0)
 515                 goto err1;
 516
 517         if (gpio_request(HTCHERALD_GPIO_USB_EN2, "herald_usb") < 0)
 518                 goto err2;
 519
 520         if (gpio_request(HTCHERALD_GPIO_USB_DM, "herald_usb") < 0)
 521                 goto err3;
 522
 523         if (gpio_request(HTCHERALD_GPIO_USB_DP, "herald_usb") < 0)
 524                 goto err4;
 525
 526         /* force USB_EN GPIO to 0 */
 527         do {
 528                 /* output low */
 529                 gpio_direction_output(HTCHERALD_GPIO_USB_EN1, 0);
 530         } while ((value = gpio_get_value(HTCHERALD_GPIO_USB_EN1)) == 1 &&
 531                         --tries);
 532
 533         if (value == 1)
 534                 printk(KERN_WARNING "Unable to reset USB, trying to continue\n");
 535
 536         gpio_direction_output(HTCHERALD_GPIO_USB_EN2, 0); /* output low */
 537         gpio_direction_input(HTCHERALD_GPIO_USB_DM); /* input */
 538         gpio_direction_input(HTCHERALD_GPIO_USB_DP); /* input */
 539
 540         goto done;
 541
 542 err4:
 543         gpio_free(HTCHERALD_GPIO_USB_DM);
 544 err3:
 545         gpio_free(HTCHERALD_GPIO_USB_EN2);
 546 err2:
 547         gpio_free(HTCHERALD_GPIO_USB_EN1);
 548 err1:
 549         printk(KERN_ERR "Unabled to request GPIO for USB\n");
 550 done:
 551         printk(KERN_INFO "USB setup complete.\n");
 552 }
 553
 554 static void __init htcherald_init(void)
 555 {
 556         printk(KERN_INFO "HTC Herald init.\n");
 557
 558         /* Do board initialization before we register all the devices */
 559         htcpld_resources[0].start = gpio_to_irq(HTCHERALD_GIRQ_BTNS);
 560         htcpld_resources[0].end = gpio_to_irq(HTCHERALD_GIRQ_BTNS);
 561         platform_add_devices(devices, ARRAY_SIZE(devices));
 562
 563         htcherald_disable_watchdog();
 564
 565         htcherald_usb_enable();
 566         omap1_usb_init(&htcherald_usb_config);
 567
 568         htcherald_spi_board_info[0].irq = gpio_to_irq(HTCHERALD_GPIO_TS);
 569         spi_register_board_info(htcherald_spi_board_info,
 570                 ARRAY_SIZE(htcherald_spi_board_info));
 571
 572         omap_register_i2c_bus(1, 100, NULL, 0);
 573
 574 #if IS_ENABLED(CONFIG_MMC_OMAP)
 575         htc_mmc_data[0] = &htc_mmc1_data;
 576         omap1_init_mmc(htc_mmc_data, 1);
 577 #endif
 578
 579         omapfb_set_lcd_config(&htcherald_lcd_config);
 580 }
 581
 582 MACHINE_START(HERALD, "HTC Herald")
 583         /* Maintainer: Cory Maccarrone <darkstar6262@gmail.com> */
 584         /* Maintainer: wing-linux.sourceforge.net */
 585         .atag_offset    = 0x100,
 586         .map_io         = htcherald_map_io,
 587         .init_early     = omap1_init_early,
 588         .init_irq       = omap1_init_irq,
 589         .handle_irq     = omap1_handle_irq,
 590         .init_machine   = htcherald_init,
 591         .init_late      = omap1_init_late,
 592         .init_time      = omap1_timer_init,
 593         .restart        = omap1_restart,
 594 MACHINE_END