Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 | /*
* Support for synaptics touchscreen.
*
* Copyright (C) 2007 Google, Inc.
* Author: Arve Hjønnevåg <arve@android.com>
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* http://www.synaptics.com/sites/default/files/511_000099_01F.pdf
*/
#include <linux/module.h>
#include <linux/delay.h>
#ifdef CONFIG_HAS_EARLYSUSPEND
#include <linux/earlysuspend.h>
#endif
#include <linux/hrtimer.h>
#include <linux/i2c.h>
#include <linux/input.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/platform_device.h>
#include "synaptics_i2c_rmi.h"
static struct workqueue_struct *synaptics_wq;
struct synaptics_ts_data {
u16 addr;
struct i2c_client *client;
struct input_dev *input_dev;
int use_irq;
struct hrtimer timer;
struct work_struct work;
u16 max[2];
int snap_state[2][2];
int snap_down_on[2];
int snap_down_off[2];
int snap_up_on[2];
int snap_up_off[2];
int snap_down[2];
int snap_up[2];
u32 flags;
int (*power)(int on);
#ifdef CONFIG_HAS_EARLYSUSPEND
struct early_suspend early_suspend;
#endif
};
static int i2c_set(struct synaptics_ts_data *ts, u8 reg, u8 val, char *msg)
{
int ret = i2c_smbus_write_byte_data(ts->client, reg, val);
if (ret < 0)
pr_err("i2c_smbus_write_byte_data failed (%s)\n", msg);
return ret;
}
static int i2c_read(struct synaptics_ts_data *ts, u8 reg, char *msg)
{
int ret = i2c_smbus_read_byte_data(ts->client, reg);
if (ret < 0)
pr_err("i2c_smbus_read_byte_data failed (%s)\n", msg);
return ret;
}
#ifdef CONFIG_HAS_EARLYSUSPEND
static void synaptics_ts_early_suspend(struct early_suspend *h);
static void synaptics_ts_late_resume(struct early_suspend *h);
#endif
static int synaptics_init_panel(struct synaptics_ts_data *ts)
{
int ret;
ret = i2c_set(ts, 0xff, 0x10, "set page select");
if (ret == 0)
ret = i2c_set(ts, 0x41, 0x04, "set No Clip Z");
ret = i2c_set(ts, 0xff, 0x04, "fallback page select");
ret = i2c_set(ts, 0xf0, 0x81, "select 80 reports per second");
return ret;
}
static void decode_report(struct synaptics_ts_data *ts, u8 *buf)
{
/*
* This sensor sends two 6-byte absolute finger reports, an optional
* 2-byte relative report followed by a status byte. This function
* reads the two finger reports and transforms the coordinates
* according the platform data so they can be aligned with the lcd
* behind the touchscreen. Typically we flip the y-axis since the
* sensor uses the bottom left corner as the origin, but if the sensor
* is mounted upside down the platform data will request that the
* x-axis should be flipped instead. The snap to inactive edge border
* are used to allow tapping the edges of the screen on the G1. The
* active area of the touchscreen is smaller than the lcd. When the
* finger gets close the edge of the screen we snap it to the
* edge. This allows ui elements at the edge of the screen to be hit,
* and it prevents hitting ui elements that are not at the edge of the
* screen when the finger is touching the edge.
*/
int pos[2][2];
int f, a;
int base = 2;
int z = buf[1];
int w = buf[0] >> 4;
int finger = buf[0] & 7;
int finger2_pressed;
for (f = 0; f < 2; f++) {
u32 flip_flag = SYNAPTICS_FLIP_X;
for (a = 0; a < 2; a++) {
int p = buf[base + 1];
p |= (u16)(buf[base] & 0x1f) << 8;
if (ts->flags & flip_flag)
p = ts->max[a] - p;
if (ts->flags & SYNAPTICS_SNAP_TO_INACTIVE_EDGE) {
if (ts->snap_state[f][a]) {
if (p <= ts->snap_down_off[a])
p = ts->snap_down[a];
else if (p >= ts->snap_up_off[a])
p = ts->snap_up[a];
else
ts->snap_state[f][a] = 0;
} else {
if (p <= ts->snap_down_on[a]) {
p = ts->snap_down[a];
ts->snap_state[f][a] = 1;
} else if (p >= ts->snap_up_on[a]) {
p = ts->snap_up[a];
ts->snap_state[f][a] = 1;
}
}
}
pos[f][a] = p;
base += 2;
flip_flag <<= 1;
}
base += 2;
if (ts->flags & SYNAPTICS_SWAP_XY)
swap(pos[f][0], pos[f][1]);
}
if (z) {
input_report_abs(ts->input_dev, ABS_X, pos[0][0]);
input_report_abs(ts->input_dev, ABS_Y, pos[0][1]);
}
input_report_abs(ts->input_dev, ABS_PRESSURE, z);
input_report_abs(ts->input_dev, ABS_TOOL_WIDTH, w);
input_report_key(ts->input_dev, BTN_TOUCH, finger);
finger2_pressed = finger > 1 && finger != 7;
input_report_key(ts->input_dev, BTN_2, finger2_pressed);
if (finger2_pressed) {
input_report_abs(ts->input_dev, ABS_HAT0X, pos[1][0]);
input_report_abs(ts->input_dev, ABS_HAT0Y, pos[1][1]);
}
input_sync(ts->input_dev);
}
static void synaptics_ts_work_func(struct work_struct *work)
{
int i;
int ret;
int bad_data = 0;
struct i2c_msg msg[2];
u8 start_reg = 0;
u8 buf[15];
struct synaptics_ts_data *ts =
container_of(work, struct synaptics_ts_data, work);
msg[0].addr = ts->client->addr;
msg[0].flags = 0;
msg[0].len = 1;
msg[0].buf = &start_reg;
msg[1].addr = ts->client->addr;
msg[1].flags = I2C_M_RD;
msg[1].len = sizeof(buf);
msg[1].buf = buf;
for (i = 0; i < ((ts->use_irq && !bad_data) ? 1 : 10); i++) {
ret = i2c_transfer(ts->client->adapter, msg, 2);
if (ret < 0) {
pr_err("ts_work: i2c_transfer failed\n");
bad_data = 1;
continue;
}
if ((buf[14] & 0xc0) != 0x40) {
pr_warning("synaptics_ts_work_func:"
" bad read %x %x %x %x %x %x %x %x %x"
" %x %x %x %x %x %x, ret %d\n",
buf[0], buf[1], buf[2], buf[3],
buf[4], buf[5], buf[6], buf[7],
buf[8], buf[9], buf[10], buf[11],
buf[12], buf[13], buf[14], ret);
if (bad_data)
synaptics_init_panel(ts);
bad_data = 1;
continue;
}
bad_data = 0;
if ((buf[14] & 1) == 0)
break;
decode_report(ts, buf);
}
if (ts->use_irq)
enable_irq(ts->client->irq);
}
static enum hrtimer_restart synaptics_ts_timer_func(struct hrtimer *timer)
{
struct synaptics_ts_data *ts =
container_of(timer, struct synaptics_ts_data, timer);
queue_work(synaptics_wq, &ts->work);
hrtimer_start(&ts->timer, ktime_set(0, 12500000), HRTIMER_MODE_REL);
return HRTIMER_NORESTART;
}
static irqreturn_t synaptics_ts_irq_handler(int irq, void *dev_id)
{
struct synaptics_ts_data *ts = dev_id;
disable_irq_nosync(ts->client->irq);
queue_work(synaptics_wq, &ts->work);
return IRQ_HANDLED;
}
static int detect(struct synaptics_ts_data *ts, u32 *panel_version)
{
int ret;
int retry = 10;
ret = i2c_set(ts, 0xf4, 0x01, "reset device");
while (retry-- > 0) {
ret = i2c_smbus_read_byte_data(ts->client, 0xe4);
if (ret >= 0)
break;
msleep(100);
}
if (ret < 0) {
pr_err("i2c_smbus_read_byte_data failed\n");
return ret;
}
*panel_version = ret << 8;
ret = i2c_read(ts, 0xe5, "product minor");
if (ret < 0)
return ret;
*panel_version |= ret;
ret = i2c_read(ts, 0xe3, "property");
if (ret < 0)
return ret;
pr_info("synaptics: version %x, product property %x\n",
*panel_version, ret);
return 0;
}
static void compute_areas(struct synaptics_ts_data *ts,
struct synaptics_i2c_rmi_platform_data *pdata,
u16 max_x, u16 max_y)
{
int inactive_area_left;
int inactive_area_right;
int inactive_area_top;
int inactive_area_bottom;
int snap_left_on;
int snap_left_off;
int snap_right_on;
int snap_right_off;
int snap_top_on;
int snap_top_off;
int snap_bottom_on;
int snap_bottom_off;
int fuzz_x;
int fuzz_y;
int fuzz_p;
int fuzz_w;
int swapped = !!(ts->flags & SYNAPTICS_SWAP_XY);
inactive_area_left = pdata->inactive_left;
inactive_area_right = pdata->inactive_right;
inactive_area_top = pdata->inactive_top;
inactive_area_bottom = pdata->inactive_bottom;
snap_left_on = pdata->snap_left_on;
snap_left_off = pdata->snap_left_off;
snap_right_on = pdata->snap_right_on;
snap_right_off = pdata->snap_right_off;
snap_top_on = pdata->snap_top_on;
snap_top_off = pdata->snap_top_off;
snap_bottom_on = pdata->snap_bottom_on;
snap_bottom_off = pdata->snap_bottom_off;
fuzz_x = pdata->fuzz_x;
fuzz_y = pdata->fuzz_y;
fuzz_p = pdata->fuzz_p;
fuzz_w = pdata->fuzz_w;
inactive_area_left = inactive_area_left * max_x / 0x10000;
inactive_area_right = inactive_area_right * max_x / 0x10000;
inactive_area_top = inactive_area_top * max_y / 0x10000;
inactive_area_bottom = inactive_area_bottom * max_y / 0x10000;
snap_left_on = snap_left_on * max_x / 0x10000;
snap_left_off = snap_left_off * max_x / 0x10000;
snap_right_on = snap_right_on * max_x / 0x10000;
snap_right_off = snap_right_off * max_x / 0x10000;
snap_top_on = snap_top_on * max_y / 0x10000;
snap_top_off = snap_top_off * max_y / 0x10000;
snap_bottom_on = snap_bottom_on * max_y / 0x10000;
snap_bottom_off = snap_bottom_off * max_y / 0x10000;
fuzz_x = fuzz_x * max_x / 0x10000;
fuzz_y = fuzz_y * max_y / 0x10000;
ts->snap_down[swapped] = -inactive_area_left;
ts->snap_up[swapped] = max_x + inactive_area_right;
ts->snap_down[!swapped] = -inactive_area_top;
ts->snap_up[!swapped] = max_y + inactive_area_bottom;
ts->snap_down_on[swapped] = snap_left_on;
ts->snap_down_off[swapped] = snap_left_off;
ts->snap_up_on[swapped] = max_x - snap_right_on;
ts->snap_up_off[swapped] = max_x - snap_right_off;
ts->snap_down_on[!swapped] = snap_top_on;
ts->snap_down_off[!swapped] = snap_top_off;
ts->snap_up_on[!swapped] = max_y - snap_bottom_on;
ts->snap_up_off[!swapped] = max_y - snap_bottom_off;
pr_info("synaptics_ts_probe: max_x %d, max_y %d\n", max_x, max_y);
pr_info("synaptics_ts_probe: inactive_x %d %d, inactive_y %d %d\n",
inactive_area_left, inactive_area_right,
inactive_area_top, inactive_area_bottom);
pr_info("synaptics_ts_probe: snap_x %d-%d %d-%d, snap_y %d-%d %d-%d\n",
snap_left_on, snap_left_off, snap_right_on, snap_right_off,
snap_top_on, snap_top_off, snap_bottom_on, snap_bottom_off);
input_set_abs_params(ts->input_dev, ABS_X,
-inactive_area_left, max_x + inactive_area_right,
fuzz_x, 0);
input_set_abs_params(ts->input_dev, ABS_Y,
-inactive_area_top, max_y + inactive_area_bottom,
fuzz_y, 0);
input_set_abs_params(ts->input_dev, ABS_PRESSURE, 0, 255, fuzz_p, 0);
input_set_abs_params(ts->input_dev, ABS_TOOL_WIDTH, 0, 15, fuzz_w, 0);
input_set_abs_params(ts->input_dev, ABS_HAT0X, -inactive_area_left,
max_x + inactive_area_right, fuzz_x, 0);
input_set_abs_params(ts->input_dev, ABS_HAT0Y, -inactive_area_top,
max_y + inactive_area_bottom, fuzz_y, 0);
}
static struct synaptics_i2c_rmi_platform_data fake_pdata;
static int __devinit synaptics_ts_probe(
struct i2c_client *client, const struct i2c_device_id *id)
{
struct synaptics_ts_data *ts;
u8 buf0[4];
u8 buf1[8];
struct i2c_msg msg[2];
int ret = 0;
struct synaptics_i2c_rmi_platform_data *pdata;
u32 panel_version = 0;
u16 max_x, max_y;
if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
pr_err("synaptics_ts_probe: need I2C_FUNC_I2C\n");
ret = -ENODEV;
goto err_check_functionality_failed;
}
if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_WORD_DATA)) {
pr_err("synaptics_ts_probe: need I2C_FUNC_SMBUS_WORD_DATA\n");
ret = -ENODEV;
goto err_check_functionality_failed;
}
if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_WORD_DATA)) {
pr_err("synaptics_ts_probe: need I2C_FUNC_SMBUS_WORD_DATA\n");
ret = -ENODEV;
goto err_check_functionality_failed;
}
ts = kzalloc(sizeof(*ts), GFP_KERNEL);
if (ts == NULL) {
ret = -ENOMEM;
goto err_alloc_data_failed;
}
INIT_WORK(&ts->work, synaptics_ts_work_func);
ts->client = client;
i2c_set_clientdata(client, ts);
pdata = client->dev.platform_data;
if (pdata)
ts->power = pdata->power;
else
pdata = &fake_pdata;
if (ts->power) {
ret = ts->power(1);
if (ret < 0) {
pr_err("synaptics_ts_probe power on failed\n");
goto err_power_failed;
}
}
ret = detect(ts, &panel_version);
if (ret)
goto err_detect_failed;
while (pdata->version > panel_version)
pdata++;
ts->flags = pdata->flags;
ret = i2c_read(ts, 0xf0, "device control");
if (ret < 0)
goto err_detect_failed;
pr_info("synaptics: device control %x\n", ret);
ret = i2c_read(ts, 0xf1, "interrupt enable");
if (ret < 0)
goto err_detect_failed;
pr_info("synaptics_ts_probe: interrupt enable %x\n", ret);
ret = i2c_set(ts, 0xf1, 0, "disable interrupt");
if (ret < 0)
goto err_detect_failed;
msg[0].addr = ts->client->addr;
msg[0].flags = 0;
msg[0].len = 1;
msg[0].buf = buf0;
buf0[0] = 0xe0;
msg[1].addr = ts->client->addr;
msg[1].flags = I2C_M_RD;
msg[1].len = 8;
msg[1].buf = buf1;
ret = i2c_transfer(ts->client->adapter, msg, 2);
if (ret < 0) {
pr_err("i2c_transfer failed\n");
goto err_detect_failed;
}
pr_info("synaptics_ts_probe: 0xe0: %x %x %x %x %x %x %x %x\n",
buf1[0], buf1[1], buf1[2], buf1[3],
buf1[4], buf1[5], buf1[6], buf1[7]);
ret = i2c_set(ts, 0xff, 0x10, "page select = 0x10");
if (ret < 0)
goto err_detect_failed;
ret = i2c_smbus_read_word_data(ts->client, 0x04);
if (ret < 0) {
pr_err("i2c_smbus_read_word_data failed\n");
goto err_detect_failed;
}
ts->max[0] = max_x = (ret >> 8 & 0xff) | ((ret & 0x1f) << 8);
ret = i2c_smbus_read_word_data(ts->client, 0x06);
if (ret < 0) {
pr_err("i2c_smbus_read_word_data failed\n");
goto err_detect_failed;
}
ts->max[1] = max_y = (ret >> 8 & 0xff) | ((ret & 0x1f) << 8);
if (ts->flags & SYNAPTICS_SWAP_XY)
swap(max_x, max_y);
/* will also switch back to page 0x04 */
ret = synaptics_init_panel(ts);
if (ret < 0) {
pr_err("synaptics_init_panel failed\n");
goto err_detect_failed;
}
ts->input_dev = input_allocate_device();
if (ts->input_dev == NULL) {
ret = -ENOMEM;
pr_err("synaptics: Failed to allocate input device\n");
goto err_input_dev_alloc_failed;
}
ts->input_dev->name = "synaptics-rmi-touchscreen";
ts->input_dev->phys = "msm/input0";
ts->input_dev->id.bustype = BUS_I2C;
__set_bit(EV_SYN, ts->input_dev->evbit);
__set_bit(EV_KEY, ts->input_dev->evbit);
__set_bit(BTN_TOUCH, ts->input_dev->keybit);
__set_bit(BTN_2, ts->input_dev->keybit);
__set_bit(EV_ABS, ts->input_dev->evbit);
compute_areas(ts, pdata, max_x, max_y);
ret = input_register_device(ts->input_dev);
if (ret) {
pr_err("synaptics: Unable to register %s input device\n",
ts->input_dev->name);
goto err_input_register_device_failed;
}
if (client->irq) {
ret = request_irq(client->irq, synaptics_ts_irq_handler,
0, client->name, ts);
if (ret == 0) {
ret = i2c_set(ts, 0xf1, 0x01, "enable abs int");
if (ret)
free_irq(client->irq, ts);
}
if (ret == 0)
ts->use_irq = 1;
else
dev_err(&client->dev, "request_irq failed\n");
}
if (!ts->use_irq) {
hrtimer_init(&ts->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
ts->timer.function = synaptics_ts_timer_func;
hrtimer_start(&ts->timer, ktime_set(1, 0), HRTIMER_MODE_REL);
}
#ifdef CONFIG_HAS_EARLYSUSPEND
ts->early_suspend.level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN + 1;
ts->early_suspend.suspend = synaptics_ts_early_suspend;
ts->early_suspend.resume = synaptics_ts_late_resume;
register_early_suspend(&ts->early_suspend);
#endif
pr_info("synaptics: Start touchscreen %s in %s mode\n",
ts->input_dev->name, ts->use_irq ? "interrupt" : "polling");
return 0;
err_input_register_device_failed:
input_free_device(ts->input_dev);
err_input_dev_alloc_failed:
err_detect_failed:
err_power_failed:
kfree(ts);
err_alloc_data_failed:
err_check_functionality_failed:
return ret;
}
static int synaptics_ts_remove(struct i2c_client *client)
{
struct synaptics_ts_data *ts = i2c_get_clientdata(client);
#ifdef CONFIG_HAS_EARLYSUSPEND
unregister_early_suspend(&ts->early_suspend);
#endif
if (ts->use_irq)
free_irq(client->irq, ts);
else
hrtimer_cancel(&ts->timer);
input_unregister_device(ts->input_dev);
kfree(ts);
return 0;
}
#ifdef CONFIG_PM
static int synaptics_ts_suspend(struct i2c_client *client, pm_message_t mesg)
{
int ret;
struct synaptics_ts_data *ts = i2c_get_clientdata(client);
if (ts->use_irq)
disable_irq(client->irq);
else
hrtimer_cancel(&ts->timer);
ret = cancel_work_sync(&ts->work);
if (ret && ts->use_irq) /* if work was pending disable-count is now 2 */
enable_irq(client->irq);
i2c_set(ts, 0xf1, 0, "disable interrupt");
i2c_set(ts, 0xf0, 0x86, "deep sleep");
if (ts->power) {
ret = ts->power(0);
if (ret < 0)
pr_err("synaptics_ts_suspend power off failed\n");
}
return 0;
}
static int synaptics_ts_resume(struct i2c_client *client)
{
int ret;
struct synaptics_ts_data *ts = i2c_get_clientdata(client);
if (ts->power) {
ret = ts->power(1);
if (ret < 0)
pr_err("synaptics_ts_resume power on failed\n");
}
synaptics_init_panel(ts);
if (ts->use_irq) {
enable_irq(client->irq);
i2c_set(ts, 0xf1, 0x01, "enable abs int");
} else
hrtimer_start(&ts->timer, ktime_set(1, 0), HRTIMER_MODE_REL);
return 0;
}
#ifdef CONFIG_HAS_EARLYSUSPEND
static void synaptics_ts_early_suspend(struct early_suspend *h)
{
struct synaptics_ts_data *ts;
ts = container_of(h, struct synaptics_ts_data, early_suspend);
synaptics_ts_suspend(ts->client, PMSG_SUSPEND);
}
static void synaptics_ts_late_resume(struct early_suspend *h)
{
struct synaptics_ts_data *ts;
ts = container_of(h, struct synaptics_ts_data, early_suspend);
synaptics_ts_resume(ts->client);
}
#endif
#else
#define synaptics_ts_suspend NULL
#define synaptics_ts_resume NULL
#endif
static const struct i2c_device_id synaptics_ts_id[] = {
{ SYNAPTICS_I2C_RMI_NAME, 0 },
{ }
};
static struct i2c_driver synaptics_ts_driver = {
.probe = synaptics_ts_probe,
.remove = synaptics_ts_remove,
#ifndef CONFIG_HAS_EARLYSUSPEND
.suspend = synaptics_ts_suspend,
.resume = synaptics_ts_resume,
#endif
.id_table = synaptics_ts_id,
.driver = {
.name = SYNAPTICS_I2C_RMI_NAME,
},
};
static int __devinit synaptics_ts_init(void)
{
synaptics_wq = create_singlethread_workqueue("synaptics_wq");
if (!synaptics_wq)
return -ENOMEM;
return i2c_add_driver(&synaptics_ts_driver);
}
static void __exit synaptics_ts_exit(void)
{
i2c_del_driver(&synaptics_ts_driver);
if (synaptics_wq)
destroy_workqueue(synaptics_wq);
}
module_init(synaptics_ts_init);
module_exit(synaptics_ts_exit);
MODULE_DESCRIPTION("Synaptics Touchscreen Driver");
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Arve Hjønnevåg <arve@android.com>");
|