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board-htcherald.c
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1 /*
2  * HTC Herald board configuration
3  * Copyright (C) 2009 Cory Maccarrone <[email protected]>
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>
41 
42 #include <asm/mach-types.h>
43 #include <asm/mach/arch.h>
44 
45 #include <mach/omap7xx.h>
46 #include <plat/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 
181 static 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 
232 static const struct matrix_keymap_data htc_herald_keymap_data = {
233  .keymap = htc_herald_keymap,
234  .keymap_size = ARRAY_SIZE(htc_herald_keymap),
235 };
236 
237 static 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 
245 static 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 
253 static 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 */
264 static 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 
280 static 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 
286 static 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. */
295 static struct gpio_led gpio_leds[] = {
301  {"red_solid", "mmc0", HTCPLD_GPIO_LED_RED_SOLID, 0, 0, LEDS_GPIO_DEFSTATE_OFF},
307 };
308 
309 static struct gpio_led_platform_data gpio_leds_data = {
310  .leds = gpio_leds,
311  .num_leds = ARRAY_SIZE(gpio_leds),
312 };
313 
314 static 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 
324 static struct resource htcpld_resources[] = {
325  [0] = {
326  .flags = IORESOURCE_IRQ,
327  },
328 };
329 
330 static 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 
365 static 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 
374 static 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 */
385 static 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 */
394 static struct omap_lcd_config htcherald_lcd_config __initdata = {
395  .ctrl_name = "internal",
396 };
397 
398 static 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)
405 static 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 
417 static struct omap_mmc_platform_data *htc_mmc_data[1];
418 #endif
419 
420 
421 /* Platform devices for the Herald */
422 static 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  */
433 static 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 
446 static 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 
460 static void __init htcherald_lcd_init(void)
461 {
462  u32 reg;
463  unsigned int tries = 200;
464 
465  /* disable controller if active */
467  if (reg & OMAP_LCDC_CTRL_LCD_EN) {
468  reg &= ~OMAP_LCDC_CTRL_LCD_EN;
470 
471  /* wait for end of frame */
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 */
482  reg &= ~(1 << 7);
484 
486  reg &= ~(1 << 8);
488  }
489 }
490 
491 static 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 
504 static 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");
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 
523 static 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 */
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 */
554 
555  goto done;
556 
557 err4:
559 err3:
561 err2:
563 err1:
564  printk(KERN_ERR "Unabled to request GPIO for USB\n");
565 done:
566  printk(KERN_INFO "USB setup complete.\n");
567 }
568 
569 static 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 
597 MACHINE_START(HERALD, "HTC Herald")
598  /* Maintainer: Cory Maccarrone <[email protected]> */
599  /* Maintainer: wing-linux.sourceforge.net */
600  .atag_offset = 0x100,
601  .map_io = htcherald_map_io,
602  .init_early = omap1_init_early,
603  .reserve = omap_reserve,
604  .init_irq = omap1_init_irq,
605  .init_machine = htcherald_init,
606  .init_late = omap1_init_late,
607  .timer = &omap1_timer,
608  .restart = omap1_restart,