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
htcherald_lcd_init(void)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
htcherald_map_io(void)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
htcherald_disable_watchdog(void)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
htcherald_usb_enable(void)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
htcherald_init(void)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
615