~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/arch/arm/mach-omap1/board-htcherald.c

Version: ~ [ linux-5.4-rc1 ] ~ [ linux-5.3.2 ] ~ [ linux-5.2.18 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.76 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.146 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.194 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.194 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.140 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.74 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-3.9.11 ] ~ [ linux-3.8.13 ] ~ [ linux-3.7.10 ] ~ [ linux-3.6.11 ] ~ [ linux-3.5.7 ] ~ [ linux-3.4.113 ] ~ [ linux-3.3.8 ] ~ [ linux-3.2.102 ] ~ [ linux-3.1.10 ] ~ [ linux-3.0.101 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  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 
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[] = {
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 
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 */
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 
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");
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 
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 */
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 
557 err4:
558         gpio_free(HTCHERALD_GPIO_USB_DM);
559 err3:
560         gpio_free(HTCHERALD_GPIO_USB_EN2);
561 err2:
562         gpio_free(HTCHERALD_GPIO_USB_EN1);
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 <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,
608 MACHINE_END
609 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp