arch/arm/mach-tegra/board-stingray-touch.c

   1 /*
   2  * arch/arm/mach-tegra/board-stingray-touch.c
   3  *
   4  * Copyright (C) 2010 Motorola, Inc.
   5  * Copyright (C) 2010 Google, Inc.
   6  *
   7  * This software is licensed under the terms of the GNU General Public
   8  * License version 2, as published by the Free Software Foundation, and
   9  * may be copied, distributed, and modified under those terms.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  */
  17
  18 #include <linux/resource.h>
  19 #include <linux/platform_device.h>
  20 #include <linux/delay.h>
  21 #include <linux/gpio.h>
  22 #include <linux/i2c.h>
  23 #include <asm/mach-types.h>
  24 #include <mach/irqs.h>
  25 #include <mach/iomap.h>
  26 #include <mach/pinmux.h>
  27 #include <linux/qtouch_obp_ts.h>
  28 #include <linux/interrupt.h>
  29 #include <linux/input.h>
  30
  31 #include "board-stingray.h"
  32 #include "gpio-names.h"
  33
  34 #define XMEGAT_BL_I2C_ADDR      0x35
  35 #define STINGRAY_TOUCH_RESET_N_GPIO     TEGRA_GPIO_PR4
  36 #define STINGRAY_TOUCH_INT_N_GPIO       TEGRA_GPIO_PV2
  37 #define STINGRAY_TOUCH_WAKE_N_GPIO      TEGRA_GPIO_PJ2
  38
  39 #define STINGRAY_TOUCH_INT_N_GPIO_P2    TEGRA_GPIO_PZ2
  40
  41 static int stingray_touch_reset(void)
  42 {
  43         gpio_set_value(STINGRAY_TOUCH_RESET_N_GPIO, 0);
  44         msleep(10);
  45         gpio_set_value(STINGRAY_TOUCH_RESET_N_GPIO, 1);
  46         msleep(100); /* value from moto */
  47         return 0;
  48 }
  49
  50 static int stingray_touch_suspend(int enable)
  51 {
  52         gpio_set_value(STINGRAY_TOUCH_WAKE_N_GPIO, enable);
  53         msleep(80);
  54         return 0;
  55 }
  56
  57 /* mortable M1 */
  58 struct qtouch_ts_platform_data stingray_touch_data_m1 = {
  59
  60         .flags          = (QTOUCH_USE_MULTITOUCH |
  61                            QTOUCH_CFG_BACKUPNV),
  62         .irqflags               = (IRQF_TRIGGER_LOW),
  63         .abs_min_x              = 0,
  64         .abs_max_x              = 4095,
  65         .abs_min_y              = 0,
  66         .abs_max_y              = 4095,
  67         .abs_min_p              = 0,
  68         .abs_max_p              = 255,
  69         .abs_min_w              = 0,
  70         .abs_max_w              = 15,
  71         .x_delta                = 400,
  72         .y_delta                = 250,
  73         .nv_checksum            = 0x2c30,
  74         .fuzz_x                 = 0,
  75         .fuzz_y                 = 0,
  76         .fuzz_p                 = 2,
  77         .fuzz_w                 = 2,
  78         .boot_i2c_addr  = XMEGAT_BL_I2C_ADDR,
  79         .hw_reset               = stingray_touch_reset,
  80         .key_array = {
  81                 .cfg            = NULL,
  82                 .keys           = NULL,
  83                 .num_keys       = 0,
  84         },
  85         .touch_fw_cfg = {
  86                 .fw_name = "mXT1386_08_E1.bin",
  87                 .family_id = 0xA0,
  88                 .variant_id = 0x00,
  89                 .fw_version = 0x08,
  90                 .fw_build = 0xE1,
  91                 .boot_version = 0x20,
  92                 .base_fw_version = 0x00,
  93         },
  94         .power_cfg      = {
  95                 .idle_acq_int   = 0xff,
  96                 .active_acq_int = 0xff,
  97                 .active_idle_to = 0x00,
  98         },
  99         .acquire_cfg    = {
 100                 .charge_time    = 0x0A,
 101                 .reserve1       = 0,
 102                 .touch_drift    = 0x14,
 103                 .drift_susp     = 0x14,
 104                 .touch_autocal  = 0x00,
 105                 .reserve5       = 0,
 106                 .atch_cal_suspend_time  = 0,
 107                 .atch_cal_suspend_thres = 0,
 108                 .atch_cal_force_thres = 0x10,
 109                 .atch_cal_force_ratio = 0,
 110         },
 111         .multi_touch_cfg        = {
 112                 .ctrl           = 0x83,
 113                 .x_origin       = 0,
 114                 .y_origin       = 0,
 115                 .x_size         = 0x1b,
 116                 .y_size         = 0x2a,
 117                 .aks_cfg        = 0,
 118                 .burst_len      = 0x10,
 119                 .tch_det_thr    = 45,
 120                 .tch_det_int    = 0x3,
 121                 .orient         = 7,
 122                 .mrg_to         = 0x00,
 123                 .mov_hyst_init  = 0x05,
 124                 .mov_hyst_next  = 0x02,
 125                 .mov_filter     = 0x20,
 126                 .num_touch      = 0x01,
 127                 .merge_hyst     = 0x0A,
 128                 .merge_thresh   = 0x0A,
 129                 .amp_hyst       = 0x0A,
 130                 .x_res          = 0x0FFF,
 131                 .y_res          = 0x0FFF,
 132                 .x_low_clip     = 0x00,
 133                 .x_high_clip    = 0x00,
 134                 .y_low_clip     = 0x00,
 135                 .y_high_clip    = 0x00,
 136                 .x_edge_ctrl    = 0,
 137                 .x_edge_dist    = 0,
 138                 .y_edge_ctrl    = 0,
 139                 .y_edge_dist    = 0,
 140                 .jump_limit     = 0,
 141         },
 142         .comms_config_cfg = {
 143                 .ctrl           = 0,
 144                 .command        = 0,
 145         },
 146         .noise_suppression_cfg = {
 147                 .ctrl                   = 0,
 148                 .reserve1               = 0,
 149                 .reserve2               = 0,
 150                 .reserve3               = 0,
 151                 .reserve4               = 0,
 152                 .reserve5               = 0,
 153                 .reserve6               = 0,
 154                 .reserve7               = 0,
 155                 .noise_thres            = 0,
 156                 .reserve9               = 0,
 157                 .freq_hop_scale         = 0,
 158                 .burst_freq_0           = 0,
 159                 .burst_freq_1           = 0,
 160                 .burst_freq_2           = 0,
 161                 .burst_freq_3           = 0,
 162                 .burst_freq_4           = 0,
 163                 .reserve16              = 0,
 164         },
 165         .one_touch_gesture_proc_cfg = {
 166                 .ctrl                   = 0,
 167                 .num_gestures           = 0,
 168                 .gesture_enable         = 0,
 169                 .pres_proc              = 0,
 170                 .tap_time_out           = 0,
 171                 .flick_time_out         = 0,
 172                 .drag_time_out          = 0,
 173                 .short_press_time_out   = 0,
 174                 .long_press_time_out    = 0,
 175                 .repeat_press_time_out  = 0,
 176                 .flick_threshold        = 0,
 177                 .drag_threshold         = 0,
 178                 .tap_threshold          = 0,
 179                 .throw_threshold        = 0,
 180         },
 181         .self_test_cfg = {
 182                 .ctrl                   = 0,
 183                 .command                = 0,
 184                 .high_signal_limit_0    = 0,
 185                 .low_signal_limit_0     = 0,
 186                 .high_signal_limit_1    = 0,
 187                 .low_signal_limit_1     = 0,
 188                 .high_signal_limit_2    = 0,
 189                 .low_signal_limit_2     = 0,
 190         },
 191         .two_touch_gesture_proc_cfg = {
 192                 .ctrl                   = 0,
 193                 .num_gestures           = 0,
 194                 .reserve2               = 0,
 195                 .gesture_enable         = 0,
 196                 .rotate_threshold       = 0,
 197                 .zoom_threshold         = 0,
 198         },
 199         .cte_config_cfg = {
 200                 .ctrl                   = 0,
 201                 .command                = 0,
 202                 .reserve2               = 0,
 203                 .idle_gcaf_depth        = 16,
 204                 .active_gcaf_depth      = 16,
 205                 .voltage                = 60,
 206         },
 207         .gripsuppression_t40_cfg = {
 208                 .ctrl                   = 0,
 209                 .xlo_grip               = 0,
 210                 .xhi_grip               = 0,
 211                 .ylo_grip               = 0,
 212                 .yhi_grip               = 0,
 213         },
 214         .palm_suppression_cfg = {
 215                 .ctrl                   = 0,
 216                 .small_obj_thr          = 0,
 217                 .sig_spread_thr         = 0,
 218                 .large_obj_thr          = 0,
 219                 .distance_thr           = 0,
 220                 .sup_ext_to             = 0,
 221         },
 222         .spt_digitizer_cfg = {
 223                 .ctrl                   = 0,
 224                 .hid_idlerate           = 0,
 225                 .xlength                = 0,
 226                 .ylength                = 0,
 227         },
 228
 229         .vkeys                  = {
 230                 .count          = 0,
 231                 .keys           = NULL,
 232         },
 233 };
 234
 235 /* Portable P0 */
 236 struct qtouch_ts_platform_data stingray_touch_data_p0 = {
 237
 238         .flags          = (QTOUCH_USE_MULTITOUCH |
 239                            QTOUCH_CFG_BACKUPNV),
 240         .irqflags               = (IRQF_TRIGGER_LOW),
 241         .abs_min_x              = 10,
 242         .abs_max_x              = 2569,
 243         .abs_min_y              = 15,
 244         .abs_max_y              = 1614,
 245         .abs_min_p              = 0,
 246         .abs_max_p              = 255,
 247         .abs_min_w              = 0,
 248         .abs_max_w              = 15,
 249         .x_delta                = 400,
 250         .y_delta                = 250,
 251         .nv_checksum            = 0x3fa414,
 252         .fuzz_x                 = 0,
 253         .fuzz_y                 = 0,
 254         .fuzz_p                 = 2,
 255         .fuzz_w                 = 2,
 256         .boot_i2c_addr  = XMEGAT_BL_I2C_ADDR,
 257         .hw_reset               = stingray_touch_reset,
 258         .hw_suspend             = stingray_touch_suspend,
 259         .key_array = {
 260                 .cfg            = NULL,
 261                 .keys           = NULL,
 262                 .num_keys       = 0,
 263         },
 264         .touch_fw_cfg = {
 265                 .fw_name = "mXT1386_10_FF.bin",
 266                 .family_id = 0xA0,
 267                 .variant_id = 0x00,
 268                 .fw_version = 0x10,
 269                 .fw_build = 0xFF,
 270                 .boot_version = 0x20,
 271                 .base_fw_version = 0x00,
 272         },
 273         .power_cfg      = {
 274                 .idle_acq_int   = 0x12,
 275                 .active_acq_int = 0xFF,
 276                 .active_idle_to = 0x0A,
 277         },
 278         .acquire_cfg    = {
 279                 .charge_time    = 0x0A,
 280                 .reserve1       = 0,
 281                 .touch_drift    = 0x14,
 282                 .drift_susp     = 0x14,
 283                 .touch_autocal  = 0x4B,
 284                 .reserve5       = 0,
 285                 .atch_cal_suspend_time  = 0,
 286                 .atch_cal_suspend_thres = 0,
 287                 .atch_cal_force_thres = 0x10,
 288                 .atch_cal_force_ratio = 0x10,
 289         },
 290         .multi_touch_cfg        = {
 291                 .ctrl           = 0x83,
 292                 .x_origin       = 0,
 293                 .y_origin       = 0,
 294                 .x_size         = 0x21,
 295                 .y_size         = 0x2a,
 296                 .aks_cfg        = 0,
 297                 .burst_len      = 0x20,
 298                 .tch_det_thr    = 0x2d,
 299                 .tch_det_int    = 0x2,
 300                 .orient         = 1,
 301                 .mrg_to         = 0x0A,
 302                 .mov_hyst_init  = 0x16,
 303                 .mov_hyst_next  = 0x0B,
 304                 .mov_filter     = 0x30,
 305                 .num_touch      = 0x0A,
 306                 .merge_hyst     = 0x10,
 307                 .merge_thresh   = 0x23,
 308                 .amp_hyst       = 0x0A,
 309                 .x_res          = 0x065E,
 310                 .y_res          = 0x0A14,
 311                 .x_low_clip     = 0x0C,
 312                 .x_high_clip    = 0x0C,
 313                 .y_low_clip     = 0x05,
 314                 .y_high_clip    = 0x05,
 315                 .x_edge_ctrl    = 0xC3,
 316                 .x_edge_dist    = 0x22,
 317                 .y_edge_ctrl    = 0x82,
 318                 .y_edge_dist    = 0x3C,
 319                 .jump_limit     = 0x20,
 320                 .tch_thres_hyst = 0,
 321                 .xpitch         = 0x2D,
 322                 .ypitch         = 0x2D,
 323         },
 324         .comms_config_cfg = {
 325                 .ctrl           = 0,
 326                 .command        = 0,
 327         },
 328         .noise_suppression_cfg = {
 329                 .ctrl                   = 5,
 330                 .reserve1               = 0,
 331                 .reserve2               = 0,
 332                 .reserve3               = 0,
 333                 .reserve4               = 0,
 334                 .reserve5               = 0,
 335                 .reserve6               = 0,
 336                 .reserve7               = 0,
 337                 .noise_thres            = 32,
 338                 .reserve9               = 0,
 339                 .freq_hop_scale         = 0,
 340                 .burst_freq_0           = 10,
 341                 .burst_freq_1           = 15,
 342                 .burst_freq_2           = 19,
 343                 .burst_freq_3           = 25,
 344                 .burst_freq_4           = 30,
 345                 .reserve16              = 0,
 346         },
 347         .one_touch_gesture_proc_cfg = {
 348                 .ctrl                   = 0,
 349                 .num_gestures           = 0,
 350                 .gesture_enable         = 0,
 351                 .pres_proc              = 0,
 352                 .tap_time_out           = 0,
 353                 .flick_time_out         = 0,
 354                 .drag_time_out          = 0,
 355                 .short_press_time_out   = 0,
 356                 .long_press_time_out    = 0,
 357                 .repeat_press_time_out  = 0,
 358                 .flick_threshold        = 0,
 359                 .drag_threshold         = 0,
 360                 .tap_threshold          = 0,
 361                 .throw_threshold        = 0,
 362         },
 363         .self_test_cfg = {
 364                 .ctrl                   = 0,
 365                 .command                = 0,
 366                 .high_signal_limit_0    = 0,
 367                 .low_signal_limit_0     = 0,
 368                 .high_signal_limit_1    = 0,
 369                 .low_signal_limit_1     = 0,
 370                 .high_signal_limit_2    = 0,
 371                 .low_signal_limit_2     = 0,
 372         },
 373         .two_touch_gesture_proc_cfg = {
 374                 .ctrl                   = 0,
 375                 .num_gestures           = 0,
 376                 .reserve2               = 0,
 377                 .gesture_enable         = 0,
 378                 .rotate_threshold       = 0,
 379                 .zoom_threshold         = 0,
 380         },
 381         .cte_config_cfg = {
 382                 .ctrl                   = 0,
 383                 .command                = 0,
 384                 .reserve2               = 0,
 385                 .idle_gcaf_depth        = 20,
 386                 .active_gcaf_depth      = 20,
 387                 .voltage                = 60,
 388         },
 389         .gripsuppression_t40_cfg = {
 390                 .ctrl                   = 0,
 391                 .xlo_grip               = 0,
 392                 .xhi_grip               = 0,
 393                 .ylo_grip               = 0,
 394                 .yhi_grip               = 0,
 395         },
 396         .palm_suppression_cfg = {
 397                 .ctrl                   = 1,
 398                 .small_obj_thr          = 0,
 399                 .sig_spread_thr         = 0,
 400                 .large_obj_thr          = 0xD3,
 401                 .distance_thr           = 0x05,
 402                 .sup_ext_to             = 0x05,
 403                 .strength               = 0xDC,
 404         },
 405         .spt_digitizer_cfg = {
 406                 .ctrl                   = 0,
 407                 .hid_idlerate           = 0,
 408                 .xlength                = 0,
 409                 .ylength                = 0,
 410         },
 411
 412         .vkeys                  = {
 413                 .count          = 0,
 414                 .keys           = NULL,
 415         },
 416 };
 417
 418 /* Portable P1 and later versions */
 419 struct qtouch_ts_platform_data stingray_touch_data_p1_or_later = {
 420
 421         .flags          = (QTOUCH_USE_MULTITOUCH |
 422                            QTOUCH_CFG_BACKUPNV),
 423         .irqflags               = (IRQF_TRIGGER_LOW),
 424         .abs_min_x              = 10,
 425         .abs_max_x              = 2569,
 426         .abs_min_y              = 15,
 427         .abs_max_y              = 1614,
 428         .abs_min_p              = 0,
 429         .abs_max_p              = 255,
 430         .abs_min_w              = 0,
 431         .abs_max_w              = 15,
 432         .x_delta                = 400,
 433         .y_delta                = 250,
 434         .nv_checksum            = 0x3fa414,
 435         .fuzz_x                 = 0,
 436         .fuzz_y                 = 0,
 437         .fuzz_p                 = 2,
 438         .fuzz_w                 = 2,
 439         .boot_i2c_addr  = XMEGAT_BL_I2C_ADDR,
 440         .hw_reset               = stingray_touch_reset,
 441         .hw_suspend             = stingray_touch_suspend,
 442         .key_array = {
 443                 .cfg            = NULL,
 444                 .keys           = NULL,
 445                 .num_keys       = 0,
 446         },
 447         .touch_fw_cfg = {
 448                 .fw_name = "mXT1386_10_FF.bin",
 449                 .family_id = 0xA0,
 450                 .variant_id = 0x00,
 451                 .fw_version = 0x10,
 452                 .fw_build = 0xFF,
 453                 .boot_version = 0x20,
 454                 .base_fw_version = 0x00,
 455         },
 456         .power_cfg      = {
 457                 .idle_acq_int   = 0x12,
 458                 .active_acq_int = 0xFF,
 459                 .active_idle_to = 0x0A,
 460         },
 461         .acquire_cfg    = {
 462                 .charge_time    = 0x0A,
 463                 .reserve1       = 0,
 464                 .touch_drift    = 0x14,
 465                 .drift_susp     = 0x14,
 466                 .touch_autocal  = 0x4B,
 467                 .reserve5       = 0,
 468                 .atch_cal_suspend_time  = 0,
 469                 .atch_cal_suspend_thres = 0,
 470                 .atch_cal_force_thres = 0x10,
 471                 .atch_cal_force_ratio = 0x10,
 472         },
 473         .multi_touch_cfg        = {
 474                 .ctrl           = 0x83,
 475                 .x_origin       = 0,
 476                 .y_origin       = 0,
 477                 .x_size         = 0x21,
 478                 .y_size         = 0x2a,
 479                 .aks_cfg        = 0,
 480                 .burst_len      = 0x20,
 481                 .tch_det_thr    = 0x2d,
 482                 .tch_det_int    = 0x2,
 483                 .orient         = 1,
 484                 .mrg_to         = 0x0A,
 485                 .mov_hyst_init  = 0x16,
 486                 .mov_hyst_next  = 0x0B,
 487                 .mov_filter     = 0x30,
 488                 .num_touch      = 0x0A,
 489                 .merge_hyst     = 0x10,
 490                 .merge_thresh   = 0x23,
 491                 .amp_hyst       = 0x0A,
 492                 .x_res          = 0x065E,
 493                 .y_res          = 0x0A14,
 494                 .x_low_clip     = 0x0C,
 495                 .x_high_clip    = 0x0C,
 496                 .y_low_clip     = 0x05,
 497                 .y_high_clip    = 0x05,
 498                 .x_edge_ctrl    = 0xC3,
 499                 .x_edge_dist    = 0x22,
 500                 .y_edge_ctrl    = 0x82,
 501                 .y_edge_dist    = 0x3C,
 502                 .jump_limit     = 0x20,
 503                 .tch_thres_hyst = 0,
 504                 .xpitch         = 0x2D,
 505                 .ypitch         = 0x2D,
 506         },
 507         .comms_config_cfg = {
 508                 .ctrl           = 0,
 509                 .command        = 0,
 510         },
 511         .noise_suppression_cfg = {
 512                 .ctrl                   = 5,
 513                 .reserve1               = 0,
 514                 .reserve2               = 0,
 515                 .reserve3               = 0,
 516                 .reserve4               = 0,
 517                 .reserve5               = 0,
 518                 .reserve6               = 0,
 519                 .reserve7               = 0,
 520                 .noise_thres            = 32,
 521                 .reserve9               = 0,
 522                 .freq_hop_scale         = 0,
 523                 .burst_freq_0           = 10,
 524                 .burst_freq_1           = 15,
 525                 .burst_freq_2           = 19,
 526                 .burst_freq_3           = 25,
 527                 .burst_freq_4           = 30,
 528                 .reserve16              = 0,
 529         },
 530         .one_touch_gesture_proc_cfg = {
 531                 .ctrl                   = 0,
 532                 .num_gestures           = 0,
 533                 .gesture_enable         = 0,
 534                 .pres_proc              = 0,
 535                 .tap_time_out           = 0,
 536                 .flick_time_out         = 0,
 537                 .drag_time_out          = 0,
 538                 .short_press_time_out   = 0,
 539                 .long_press_time_out    = 0,
 540                 .repeat_press_time_out  = 0,
 541                 .flick_threshold        = 0,
 542                 .drag_threshold         = 0,
 543                 .tap_threshold          = 0,
 544                 .throw_threshold        = 0,
 545         },
 546         .self_test_cfg = {
 547                 .ctrl                   = 0,
 548                 .command                = 0,
 549                 .high_signal_limit_0    = 0,
 550                 .low_signal_limit_0     = 0,
 551                 .high_signal_limit_1    = 0,
 552                 .low_signal_limit_1     = 0,
 553                 .high_signal_limit_2    = 0,
 554                 .low_signal_limit_2     = 0,
 555         },
 556         .two_touch_gesture_proc_cfg = {
 557                 .ctrl                   = 0,
 558                 .num_gestures           = 0,
 559                 .reserve2               = 0,
 560                 .gesture_enable         = 0,
 561                 .rotate_threshold       = 0,
 562                 .zoom_threshold         = 0,
 563         },
 564         .cte_config_cfg = {
 565                 .ctrl                   = 0,
 566                 .command                = 0,
 567                 .reserve2               = 0,
 568                 .idle_gcaf_depth        = 20,
 569                 .active_gcaf_depth      = 20,
 570                 .voltage                = 60,
 571         },
 572         .gripsuppression_t40_cfg = {
 573                 .ctrl                   = 0,
 574                 .xlo_grip               = 0,
 575                 .xhi_grip               = 0,
 576                 .ylo_grip               = 0,
 577                 .yhi_grip               = 0,
 578                 },
 579         .palm_suppression_cfg = {
 580                 .ctrl                   = 1,
 581                 .small_obj_thr          = 0,
 582                 .sig_spread_thr         = 0,
 583                 .large_obj_thr          = 0xD3,
 584                 .distance_thr           = 0x05,
 585                 .sup_ext_to             = 0x05,
 586                 .strength               = 0xDC,
 587         },
 588         .spt_digitizer_cfg = {
 589                 .ctrl                   = 0,
 590                 .hid_idlerate           = 0,
 591                 .xlength                = 0,
 592                 .ylength                = 0,
 593         },
 594
 595         .vkeys                  = {
 596                 .count          = 0,
 597                 .keys           = NULL,
 598         },
 599 };
 600
 601 static struct i2c_board_info __initdata stingray_i2c_bus1_touch_info[] = {
 602         {
 603                 I2C_BOARD_INFO(QTOUCH_TS_NAME, 0x5B),
 604         },
 605 };
 606
 607 int __init stingray_touch_init(void)
 608 {
 609         unsigned touch_int_gpio;
 610
 611         if (stingray_revision() == STINGRAY_REVISION_P2)
 612                 touch_int_gpio = STINGRAY_TOUCH_INT_N_GPIO_P2;
 613         else
 614                 touch_int_gpio = STINGRAY_TOUCH_INT_N_GPIO;
 615
 616         tegra_gpio_enable(touch_int_gpio);
 617         gpio_request(touch_int_gpio, "touch_irq");
 618         gpio_direction_input(touch_int_gpio);
 619
 620         tegra_gpio_enable(STINGRAY_TOUCH_WAKE_N_GPIO);
 621         gpio_request(STINGRAY_TOUCH_WAKE_N_GPIO, "touch_wake");
 622         gpio_direction_output(STINGRAY_TOUCH_WAKE_N_GPIO, 0);
 623
 624         tegra_gpio_enable(STINGRAY_TOUCH_RESET_N_GPIO);
 625         gpio_request(STINGRAY_TOUCH_RESET_N_GPIO, "touch_reset");
 626         gpio_direction_output(STINGRAY_TOUCH_RESET_N_GPIO, 1);
 627
 628         stingray_i2c_bus1_touch_info[0].irq =
 629                  TEGRA_GPIO_TO_IRQ(touch_int_gpio);
 630
 631         if ((stingray_revision() == STINGRAY_REVISION_P1) ||
 632                 (stingray_revision() == STINGRAY_REVISION_P2) ||
 633                 (stingray_revision() == STINGRAY_REVISION_P3))
 634                 stingray_i2c_bus1_touch_info[0].platform_data =
 635                                  &stingray_touch_data_p1_or_later;
 636         else if (stingray_revision() == STINGRAY_REVISION_P0)
 637                 stingray_i2c_bus1_touch_info[0].platform_data = &stingray_touch_data_p0;
 638         else
 639                 stingray_i2c_bus1_touch_info[0].platform_data = &stingray_touch_data_m1;
 640
 641         i2c_register_board_info(0, stingray_i2c_bus1_touch_info, 1);
 642
 643         return 0;
 644 }