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5245db49 HS |
1 | /* |
2 | * Driver for AUO in-cell touchscreens | |
3 | * | |
4 | * Copyright (c) 2011 Heiko Stuebner <heiko@sntech.de> | |
5 | * | |
6 | * loosely based on auo_touch.c from Dell Streak vendor-kernel | |
7 | * | |
8 | * Copyright (c) 2008 QUALCOMM Incorporated. | |
9 | * Copyright (c) 2008 QUALCOMM USA, INC. | |
10 | * | |
11 | * | |
12 | * This software is licensed under the terms of the GNU General Public | |
13 | * License version 2, as published by the Free Software Foundation, and | |
14 | * may be copied, distributed, and modified under those terms. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, | |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | * GNU General Public License for more details. | |
20 | * | |
21 | */ | |
22 | ||
23 | #include <linux/kernel.h> | |
24 | #include <linux/module.h> | |
25 | #include <linux/interrupt.h> | |
26 | #include <linux/slab.h> | |
27 | #include <linux/input.h> | |
28 | #include <linux/jiffies.h> | |
29 | #include <linux/i2c.h> | |
30 | #include <linux/mutex.h> | |
31 | #include <linux/delay.h> | |
32 | #include <linux/gpio.h> | |
33 | #include <linux/input/auo-pixcir-ts.h> | |
34 | ||
35 | /* | |
36 | * Coordinate calculation: | |
37 | * X1 = X1_LSB + X1_MSB*256 | |
38 | * Y1 = Y1_LSB + Y1_MSB*256 | |
39 | * X2 = X2_LSB + X2_MSB*256 | |
40 | * Y2 = Y2_LSB + Y2_MSB*256 | |
41 | */ | |
42 | #define AUO_PIXCIR_REG_X1_LSB 0x00 | |
43 | #define AUO_PIXCIR_REG_X1_MSB 0x01 | |
44 | #define AUO_PIXCIR_REG_Y1_LSB 0x02 | |
45 | #define AUO_PIXCIR_REG_Y1_MSB 0x03 | |
46 | #define AUO_PIXCIR_REG_X2_LSB 0x04 | |
47 | #define AUO_PIXCIR_REG_X2_MSB 0x05 | |
48 | #define AUO_PIXCIR_REG_Y2_LSB 0x06 | |
49 | #define AUO_PIXCIR_REG_Y2_MSB 0x07 | |
50 | ||
51 | #define AUO_PIXCIR_REG_STRENGTH 0x0d | |
52 | #define AUO_PIXCIR_REG_STRENGTH_X1_LSB 0x0e | |
53 | #define AUO_PIXCIR_REG_STRENGTH_X1_MSB 0x0f | |
54 | ||
55 | #define AUO_PIXCIR_REG_RAW_DATA_X 0x2b | |
56 | #define AUO_PIXCIR_REG_RAW_DATA_Y 0x4f | |
57 | ||
58 | #define AUO_PIXCIR_REG_X_SENSITIVITY 0x6f | |
59 | #define AUO_PIXCIR_REG_Y_SENSITIVITY 0x70 | |
60 | #define AUO_PIXCIR_REG_INT_SETTING 0x71 | |
61 | #define AUO_PIXCIR_REG_INT_WIDTH 0x72 | |
62 | #define AUO_PIXCIR_REG_POWER_MODE 0x73 | |
63 | ||
64 | #define AUO_PIXCIR_REG_VERSION 0x77 | |
65 | #define AUO_PIXCIR_REG_CALIBRATE 0x78 | |
66 | ||
67 | #define AUO_PIXCIR_REG_TOUCHAREA_X1 0x1e | |
68 | #define AUO_PIXCIR_REG_TOUCHAREA_Y1 0x1f | |
69 | #define AUO_PIXCIR_REG_TOUCHAREA_X2 0x20 | |
70 | #define AUO_PIXCIR_REG_TOUCHAREA_Y2 0x21 | |
71 | ||
72 | #define AUO_PIXCIR_REG_EEPROM_CALIB_X 0x42 | |
73 | #define AUO_PIXCIR_REG_EEPROM_CALIB_Y 0xad | |
74 | ||
75 | #define AUO_PIXCIR_INT_TPNUM_MASK 0xe0 | |
76 | #define AUO_PIXCIR_INT_TPNUM_SHIFT 5 | |
77 | #define AUO_PIXCIR_INT_RELEASE (1 << 4) | |
78 | #define AUO_PIXCIR_INT_ENABLE (1 << 3) | |
79 | #define AUO_PIXCIR_INT_POL_HIGH (1 << 2) | |
80 | #define AUO_PIXCIR_INT_MODE_MASK 0x03 | |
81 | ||
82 | /* | |
83 | * Power modes: | |
84 | * active: scan speed 60Hz | |
85 | * sleep: scan speed 10Hz can be auto-activated, wakeup on 1st touch | |
86 | * deep sleep: scan speed 1Hz can only be entered or left manually. | |
87 | */ | |
88 | #define AUO_PIXCIR_POWER_ACTIVE 0x00 | |
89 | #define AUO_PIXCIR_POWER_SLEEP 0x01 | |
90 | #define AUO_PIXCIR_POWER_DEEP_SLEEP 0x02 | |
91 | #define AUO_PIXCIR_POWER_MASK 0x03 | |
92 | ||
93 | #define AUO_PIXCIR_POWER_ALLOW_SLEEP (1 << 2) | |
94 | #define AUO_PIXCIR_POWER_IDLE_TIME(ms) ((ms & 0xf) << 4) | |
95 | ||
96 | #define AUO_PIXCIR_CALIBRATE 0x03 | |
97 | ||
98 | #define AUO_PIXCIR_EEPROM_CALIB_X_LEN 62 | |
99 | #define AUO_PIXCIR_EEPROM_CALIB_Y_LEN 36 | |
100 | ||
101 | #define AUO_PIXCIR_RAW_DATA_X_LEN 18 | |
102 | #define AUO_PIXCIR_RAW_DATA_Y_LEN 11 | |
103 | ||
104 | #define AUO_PIXCIR_STRENGTH_ENABLE (1 << 0) | |
105 | ||
106 | /* Touchscreen absolute values */ | |
107 | #define AUO_PIXCIR_REPORT_POINTS 2 | |
108 | #define AUO_PIXCIR_MAX_AREA 0xff | |
109 | #define AUO_PIXCIR_PENUP_TIMEOUT_MS 10 | |
110 | ||
111 | struct auo_pixcir_ts { | |
112 | struct i2c_client *client; | |
113 | struct input_dev *input; | |
114 | char phys[32]; | |
115 | ||
116 | /* special handling for touch_indicate interupt mode */ | |
117 | bool touch_ind_mode; | |
118 | ||
119 | wait_queue_head_t wait; | |
120 | bool stopped; | |
121 | }; | |
122 | ||
123 | struct auo_point_t { | |
124 | int coord_x; | |
125 | int coord_y; | |
126 | int area_major; | |
127 | int area_minor; | |
128 | int orientation; | |
129 | }; | |
130 | ||
131 | static int auo_pixcir_collect_data(struct auo_pixcir_ts *ts, | |
132 | struct auo_point_t *point) | |
133 | { | |
134 | struct i2c_client *client = ts->client; | |
135 | const struct auo_pixcir_ts_platdata *pdata = client->dev.platform_data; | |
136 | uint8_t raw_coord[8]; | |
137 | uint8_t raw_area[4]; | |
138 | int i, ret; | |
139 | ||
140 | /* touch coordinates */ | |
141 | ret = i2c_smbus_read_i2c_block_data(client, AUO_PIXCIR_REG_X1_LSB, | |
142 | 8, raw_coord); | |
143 | if (ret < 0) { | |
144 | dev_err(&client->dev, "failed to read coordinate, %d\n", ret); | |
145 | return ret; | |
146 | } | |
147 | ||
148 | /* touch area */ | |
149 | ret = i2c_smbus_read_i2c_block_data(client, AUO_PIXCIR_REG_TOUCHAREA_X1, | |
150 | 4, raw_area); | |
151 | if (ret < 0) { | |
152 | dev_err(&client->dev, "could not read touch area, %d\n", ret); | |
153 | return ret; | |
154 | } | |
155 | ||
156 | for (i = 0; i < AUO_PIXCIR_REPORT_POINTS; i++) { | |
157 | point[i].coord_x = | |
158 | raw_coord[4 * i + 1] << 8 | raw_coord[4 * i]; | |
159 | point[i].coord_y = | |
160 | raw_coord[4 * i + 3] << 8 | raw_coord[4 * i + 2]; | |
161 | ||
162 | if (point[i].coord_x > pdata->x_max || | |
163 | point[i].coord_y > pdata->y_max) { | |
164 | dev_warn(&client->dev, "coordinates (%d,%d) invalid\n", | |
165 | point[i].coord_x, point[i].coord_y); | |
166 | point[i].coord_x = point[i].coord_y = 0; | |
167 | } | |
168 | ||
169 | /* determine touch major, minor and orientation */ | |
170 | point[i].area_major = max(raw_area[2 * i], raw_area[2 * i + 1]); | |
171 | point[i].area_minor = min(raw_area[2 * i], raw_area[2 * i + 1]); | |
172 | point[i].orientation = raw_area[2 * i] > raw_area[2 * i + 1]; | |
173 | } | |
174 | ||
175 | return 0; | |
176 | } | |
177 | ||
178 | static irqreturn_t auo_pixcir_interrupt(int irq, void *dev_id) | |
179 | { | |
180 | struct auo_pixcir_ts *ts = dev_id; | |
181 | struct i2c_client *client = ts->client; | |
182 | const struct auo_pixcir_ts_platdata *pdata = client->dev.platform_data; | |
183 | struct auo_point_t point[AUO_PIXCIR_REPORT_POINTS]; | |
184 | int i; | |
185 | int ret; | |
186 | int fingers = 0; | |
187 | int abs = -1; | |
188 | ||
189 | while (!ts->stopped) { | |
190 | ||
191 | /* check for up event in touch touch_ind_mode */ | |
192 | if (ts->touch_ind_mode) { | |
193 | if (gpio_get_value(pdata->gpio_int) == 0) { | |
194 | input_mt_sync(ts->input); | |
195 | input_report_key(ts->input, BTN_TOUCH, 0); | |
196 | input_sync(ts->input); | |
197 | break; | |
198 | } | |
199 | } | |
200 | ||
201 | ret = auo_pixcir_collect_data(ts, point); | |
202 | if (ret < 0) { | |
203 | /* we want to loop only in touch_ind_mode */ | |
204 | if (!ts->touch_ind_mode) | |
205 | break; | |
206 | ||
207 | wait_event_timeout(ts->wait, ts->stopped, | |
208 | msecs_to_jiffies(AUO_PIXCIR_PENUP_TIMEOUT_MS)); | |
209 | continue; | |
210 | } | |
211 | ||
212 | for (i = 0; i < AUO_PIXCIR_REPORT_POINTS; i++) { | |
213 | if (point[i].coord_x > 0 || point[i].coord_y > 0) { | |
214 | input_report_abs(ts->input, ABS_MT_POSITION_X, | |
215 | point[i].coord_x); | |
216 | input_report_abs(ts->input, ABS_MT_POSITION_Y, | |
217 | point[i].coord_y); | |
218 | input_report_abs(ts->input, ABS_MT_TOUCH_MAJOR, | |
219 | point[i].area_major); | |
220 | input_report_abs(ts->input, ABS_MT_TOUCH_MINOR, | |
221 | point[i].area_minor); | |
222 | input_report_abs(ts->input, ABS_MT_ORIENTATION, | |
223 | point[i].orientation); | |
224 | input_mt_sync(ts->input); | |
225 | ||
226 | /* use first finger as source for singletouch */ | |
227 | if (fingers == 0) | |
228 | abs = i; | |
229 | ||
230 | /* number of touch points could also be queried | |
231 | * via i2c but would require an additional call | |
232 | */ | |
233 | fingers++; | |
234 | } | |
235 | } | |
236 | ||
237 | input_report_key(ts->input, BTN_TOUCH, fingers > 0); | |
238 | ||
239 | if (abs > -1) { | |
240 | input_report_abs(ts->input, ABS_X, point[abs].coord_x); | |
241 | input_report_abs(ts->input, ABS_Y, point[abs].coord_y); | |
242 | } | |
243 | ||
244 | input_sync(ts->input); | |
245 | ||
246 | /* we want to loop only in touch_ind_mode */ | |
247 | if (!ts->touch_ind_mode) | |
248 | break; | |
249 | ||
250 | wait_event_timeout(ts->wait, ts->stopped, | |
251 | msecs_to_jiffies(AUO_PIXCIR_PENUP_TIMEOUT_MS)); | |
252 | } | |
253 | ||
254 | return IRQ_HANDLED; | |
255 | } | |
256 | ||
257 | /* | |
258 | * Set the power mode of the device. | |
259 | * Valid modes are | |
260 | * - AUO_PIXCIR_POWER_ACTIVE | |
261 | * - AUO_PIXCIR_POWER_SLEEP - automatically left on first touch | |
262 | * - AUO_PIXCIR_POWER_DEEP_SLEEP | |
263 | */ | |
264 | static int auo_pixcir_power_mode(struct auo_pixcir_ts *ts, int mode) | |
265 | { | |
266 | struct i2c_client *client = ts->client; | |
267 | int ret; | |
268 | ||
269 | ret = i2c_smbus_read_byte_data(client, AUO_PIXCIR_REG_POWER_MODE); | |
270 | if (ret < 0) { | |
271 | dev_err(&client->dev, "unable to read reg %Xh, %d\n", | |
272 | AUO_PIXCIR_REG_POWER_MODE, ret); | |
273 | return ret; | |
274 | } | |
275 | ||
276 | ret &= ~AUO_PIXCIR_POWER_MASK; | |
277 | ret |= mode; | |
278 | ||
279 | ret = i2c_smbus_write_byte_data(client, AUO_PIXCIR_REG_POWER_MODE, ret); | |
280 | if (ret) { | |
281 | dev_err(&client->dev, "unable to write reg %Xh, %d\n", | |
282 | AUO_PIXCIR_REG_POWER_MODE, ret); | |
283 | return ret; | |
284 | } | |
285 | ||
286 | return 0; | |
287 | } | |
288 | ||
5298cc4c | 289 | static int auo_pixcir_int_config(struct auo_pixcir_ts *ts, |
5245db49 HS |
290 | int int_setting) |
291 | { | |
292 | struct i2c_client *client = ts->client; | |
293 | struct auo_pixcir_ts_platdata *pdata = client->dev.platform_data; | |
294 | int ret; | |
295 | ||
296 | ret = i2c_smbus_read_byte_data(client, AUO_PIXCIR_REG_INT_SETTING); | |
297 | if (ret < 0) { | |
298 | dev_err(&client->dev, "unable to read reg %Xh, %d\n", | |
299 | AUO_PIXCIR_REG_INT_SETTING, ret); | |
300 | return ret; | |
301 | } | |
302 | ||
303 | ret &= ~AUO_PIXCIR_INT_MODE_MASK; | |
304 | ret |= int_setting; | |
305 | ret |= AUO_PIXCIR_INT_POL_HIGH; /* always use high for interrupts */ | |
306 | ||
307 | ret = i2c_smbus_write_byte_data(client, AUO_PIXCIR_REG_INT_SETTING, | |
308 | ret); | |
309 | if (ret < 0) { | |
310 | dev_err(&client->dev, "unable to write reg %Xh, %d\n", | |
311 | AUO_PIXCIR_REG_INT_SETTING, ret); | |
312 | return ret; | |
313 | } | |
314 | ||
315 | ts->touch_ind_mode = pdata->int_setting == AUO_PIXCIR_INT_TOUCH_IND; | |
316 | ||
317 | return 0; | |
318 | } | |
319 | ||
320 | /* control the generation of interrupts on the device side */ | |
321 | static int auo_pixcir_int_toggle(struct auo_pixcir_ts *ts, bool enable) | |
322 | { | |
323 | struct i2c_client *client = ts->client; | |
324 | int ret; | |
325 | ||
326 | ret = i2c_smbus_read_byte_data(client, AUO_PIXCIR_REG_INT_SETTING); | |
327 | if (ret < 0) { | |
328 | dev_err(&client->dev, "unable to read reg %Xh, %d\n", | |
329 | AUO_PIXCIR_REG_INT_SETTING, ret); | |
330 | return ret; | |
331 | } | |
332 | ||
333 | if (enable) | |
334 | ret |= AUO_PIXCIR_INT_ENABLE; | |
335 | else | |
336 | ret &= ~AUO_PIXCIR_INT_ENABLE; | |
337 | ||
338 | ret = i2c_smbus_write_byte_data(client, AUO_PIXCIR_REG_INT_SETTING, | |
339 | ret); | |
340 | if (ret < 0) { | |
341 | dev_err(&client->dev, "unable to write reg %Xh, %d\n", | |
342 | AUO_PIXCIR_REG_INT_SETTING, ret); | |
343 | return ret; | |
344 | } | |
345 | ||
346 | return 0; | |
347 | } | |
348 | ||
349 | static int auo_pixcir_start(struct auo_pixcir_ts *ts) | |
350 | { | |
351 | struct i2c_client *client = ts->client; | |
352 | int ret; | |
353 | ||
354 | ret = auo_pixcir_power_mode(ts, AUO_PIXCIR_POWER_ACTIVE); | |
355 | if (ret < 0) { | |
356 | dev_err(&client->dev, "could not set power mode, %d\n", | |
357 | ret); | |
358 | return ret; | |
359 | } | |
360 | ||
361 | ts->stopped = false; | |
362 | mb(); | |
363 | enable_irq(client->irq); | |
364 | ||
365 | ret = auo_pixcir_int_toggle(ts, 1); | |
366 | if (ret < 0) { | |
367 | dev_err(&client->dev, "could not enable interrupt, %d\n", | |
368 | ret); | |
369 | disable_irq(client->irq); | |
370 | return ret; | |
371 | } | |
372 | ||
373 | return 0; | |
374 | } | |
375 | ||
376 | static int auo_pixcir_stop(struct auo_pixcir_ts *ts) | |
377 | { | |
378 | struct i2c_client *client = ts->client; | |
379 | int ret; | |
380 | ||
381 | ret = auo_pixcir_int_toggle(ts, 0); | |
382 | if (ret < 0) { | |
383 | dev_err(&client->dev, "could not disable interrupt, %d\n", | |
384 | ret); | |
385 | return ret; | |
386 | } | |
387 | ||
388 | /* disable receiving of interrupts */ | |
389 | disable_irq(client->irq); | |
390 | ts->stopped = true; | |
391 | mb(); | |
392 | wake_up(&ts->wait); | |
393 | ||
394 | return auo_pixcir_power_mode(ts, AUO_PIXCIR_POWER_DEEP_SLEEP); | |
395 | } | |
396 | ||
397 | static int auo_pixcir_input_open(struct input_dev *dev) | |
398 | { | |
399 | struct auo_pixcir_ts *ts = input_get_drvdata(dev); | |
400 | int ret; | |
401 | ||
402 | ret = auo_pixcir_start(ts); | |
403 | if (ret) | |
404 | return ret; | |
405 | ||
406 | return 0; | |
407 | } | |
408 | ||
409 | static void auo_pixcir_input_close(struct input_dev *dev) | |
410 | { | |
411 | struct auo_pixcir_ts *ts = input_get_drvdata(dev); | |
412 | ||
413 | auo_pixcir_stop(ts); | |
414 | ||
415 | return; | |
416 | } | |
417 | ||
418 | #ifdef CONFIG_PM_SLEEP | |
419 | static int auo_pixcir_suspend(struct device *dev) | |
420 | { | |
421 | struct i2c_client *client = to_i2c_client(dev); | |
422 | struct auo_pixcir_ts *ts = i2c_get_clientdata(client); | |
423 | struct input_dev *input = ts->input; | |
424 | int ret = 0; | |
425 | ||
426 | mutex_lock(&input->mutex); | |
427 | ||
428 | /* when configured as wakeup source, device should always wake system | |
429 | * therefore start device if necessary | |
430 | */ | |
431 | if (device_may_wakeup(&client->dev)) { | |
432 | /* need to start device if not open, to be wakeup source */ | |
433 | if (!input->users) { | |
434 | ret = auo_pixcir_start(ts); | |
435 | if (ret) | |
436 | goto unlock; | |
437 | } | |
438 | ||
439 | enable_irq_wake(client->irq); | |
440 | ret = auo_pixcir_power_mode(ts, AUO_PIXCIR_POWER_SLEEP); | |
441 | } else if (input->users) { | |
442 | ret = auo_pixcir_stop(ts); | |
443 | } | |
444 | ||
445 | unlock: | |
446 | mutex_unlock(&input->mutex); | |
447 | ||
448 | return ret; | |
449 | } | |
450 | ||
451 | static int auo_pixcir_resume(struct device *dev) | |
452 | { | |
453 | struct i2c_client *client = to_i2c_client(dev); | |
454 | struct auo_pixcir_ts *ts = i2c_get_clientdata(client); | |
455 | struct input_dev *input = ts->input; | |
456 | int ret = 0; | |
457 | ||
458 | mutex_lock(&input->mutex); | |
459 | ||
460 | if (device_may_wakeup(&client->dev)) { | |
461 | disable_irq_wake(client->irq); | |
462 | ||
463 | /* need to stop device if it was not open on suspend */ | |
464 | if (!input->users) { | |
465 | ret = auo_pixcir_stop(ts); | |
466 | if (ret) | |
467 | goto unlock; | |
468 | } | |
469 | ||
470 | /* device wakes automatically from SLEEP */ | |
471 | } else if (input->users) { | |
472 | ret = auo_pixcir_start(ts); | |
473 | } | |
474 | ||
475 | unlock: | |
476 | mutex_unlock(&input->mutex); | |
477 | ||
478 | return ret; | |
479 | } | |
480 | #endif | |
481 | ||
482 | static SIMPLE_DEV_PM_OPS(auo_pixcir_pm_ops, auo_pixcir_suspend, | |
483 | auo_pixcir_resume); | |
484 | ||
5298cc4c | 485 | static int auo_pixcir_probe(struct i2c_client *client, |
5245db49 HS |
486 | const struct i2c_device_id *id) |
487 | { | |
488 | const struct auo_pixcir_ts_platdata *pdata = client->dev.platform_data; | |
489 | struct auo_pixcir_ts *ts; | |
490 | struct input_dev *input_dev; | |
491 | int ret; | |
492 | ||
493 | if (!pdata) | |
494 | return -EINVAL; | |
495 | ||
496 | ts = kzalloc(sizeof(struct auo_pixcir_ts), GFP_KERNEL); | |
497 | if (!ts) | |
498 | return -ENOMEM; | |
499 | ||
500 | ret = gpio_request(pdata->gpio_int, "auo_pixcir_ts_int"); | |
501 | if (ret) { | |
502 | dev_err(&client->dev, "request of gpio %d failed, %d\n", | |
503 | pdata->gpio_int, ret); | |
504 | goto err_gpio_int; | |
505 | } | |
506 | ||
507 | if (pdata->init_hw) | |
508 | pdata->init_hw(client); | |
509 | ||
510 | ts->client = client; | |
511 | ts->touch_ind_mode = 0; | |
512 | init_waitqueue_head(&ts->wait); | |
513 | ||
514 | snprintf(ts->phys, sizeof(ts->phys), | |
515 | "%s/input0", dev_name(&client->dev)); | |
516 | ||
517 | input_dev = input_allocate_device(); | |
518 | if (!input_dev) { | |
519 | dev_err(&client->dev, "could not allocate input device\n"); | |
520 | goto err_input_alloc; | |
521 | } | |
522 | ||
523 | ts->input = input_dev; | |
524 | ||
525 | input_dev->name = "AUO-Pixcir touchscreen"; | |
526 | input_dev->phys = ts->phys; | |
527 | input_dev->id.bustype = BUS_I2C; | |
528 | input_dev->dev.parent = &client->dev; | |
529 | ||
530 | input_dev->open = auo_pixcir_input_open; | |
531 | input_dev->close = auo_pixcir_input_close; | |
532 | ||
533 | __set_bit(EV_ABS, input_dev->evbit); | |
534 | __set_bit(EV_KEY, input_dev->evbit); | |
535 | ||
536 | __set_bit(BTN_TOUCH, input_dev->keybit); | |
537 | ||
538 | /* For single touch */ | |
539 | input_set_abs_params(input_dev, ABS_X, 0, pdata->x_max, 0, 0); | |
540 | input_set_abs_params(input_dev, ABS_Y, 0, pdata->y_max, 0, 0); | |
541 | ||
542 | /* For multi touch */ | |
543 | input_set_abs_params(input_dev, ABS_MT_POSITION_X, 0, | |
544 | pdata->x_max, 0, 0); | |
545 | input_set_abs_params(input_dev, ABS_MT_POSITION_Y, 0, | |
546 | pdata->y_max, 0, 0); | |
547 | input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, 0, | |
548 | AUO_PIXCIR_MAX_AREA, 0, 0); | |
549 | input_set_abs_params(input_dev, ABS_MT_TOUCH_MINOR, 0, | |
550 | AUO_PIXCIR_MAX_AREA, 0, 0); | |
551 | input_set_abs_params(input_dev, ABS_MT_ORIENTATION, 0, 1, 0, 0); | |
552 | ||
553 | ret = i2c_smbus_read_byte_data(client, AUO_PIXCIR_REG_VERSION); | |
554 | if (ret < 0) | |
555 | goto err_fw_vers; | |
556 | dev_info(&client->dev, "firmware version 0x%X\n", ret); | |
557 | ||
558 | ret = auo_pixcir_int_config(ts, pdata->int_setting); | |
559 | if (ret) | |
560 | goto err_fw_vers; | |
561 | ||
562 | input_set_drvdata(ts->input, ts); | |
563 | ts->stopped = true; | |
564 | ||
565 | ret = request_threaded_irq(client->irq, NULL, auo_pixcir_interrupt, | |
566 | IRQF_TRIGGER_RISING | IRQF_ONESHOT, | |
567 | input_dev->name, ts); | |
568 | if (ret) { | |
569 | dev_err(&client->dev, "irq %d requested failed\n", client->irq); | |
570 | goto err_fw_vers; | |
571 | } | |
572 | ||
573 | /* stop device and put it into deep sleep until it is opened */ | |
574 | ret = auo_pixcir_stop(ts); | |
575 | if (ret < 0) | |
576 | goto err_input_register; | |
577 | ||
578 | ret = input_register_device(input_dev); | |
579 | if (ret) { | |
580 | dev_err(&client->dev, "could not register input device\n"); | |
581 | goto err_input_register; | |
582 | } | |
583 | ||
584 | i2c_set_clientdata(client, ts); | |
585 | ||
586 | return 0; | |
587 | ||
588 | err_input_register: | |
589 | free_irq(client->irq, ts); | |
590 | err_fw_vers: | |
591 | input_free_device(input_dev); | |
592 | err_input_alloc: | |
593 | if (pdata->exit_hw) | |
594 | pdata->exit_hw(client); | |
595 | gpio_free(pdata->gpio_int); | |
596 | err_gpio_int: | |
597 | kfree(ts); | |
598 | ||
599 | return ret; | |
600 | } | |
601 | ||
602 | static int __devexit auo_pixcir_remove(struct i2c_client *client) | |
603 | { | |
604 | struct auo_pixcir_ts *ts = i2c_get_clientdata(client); | |
605 | const struct auo_pixcir_ts_platdata *pdata = client->dev.platform_data; | |
606 | ||
607 | free_irq(client->irq, ts); | |
608 | ||
609 | input_unregister_device(ts->input); | |
610 | ||
611 | if (pdata->exit_hw) | |
612 | pdata->exit_hw(client); | |
613 | ||
614 | gpio_free(pdata->gpio_int); | |
615 | ||
616 | kfree(ts); | |
617 | ||
618 | return 0; | |
619 | } | |
620 | ||
621 | static const struct i2c_device_id auo_pixcir_idtable[] = { | |
622 | { "auo_pixcir_ts", 0 }, | |
623 | { } | |
624 | }; | |
625 | MODULE_DEVICE_TABLE(i2c, auo_pixcir_idtable); | |
626 | ||
627 | static struct i2c_driver auo_pixcir_driver = { | |
628 | .driver = { | |
629 | .owner = THIS_MODULE, | |
630 | .name = "auo_pixcir_ts", | |
631 | .pm = &auo_pixcir_pm_ops, | |
632 | }, | |
633 | .probe = auo_pixcir_probe, | |
1cb0aa88 | 634 | .remove = auo_pixcir_remove, |
5245db49 HS |
635 | .id_table = auo_pixcir_idtable, |
636 | }; | |
637 | ||
4a533835 | 638 | module_i2c_driver(auo_pixcir_driver); |
5245db49 HS |
639 | |
640 | MODULE_DESCRIPTION("AUO-PIXCIR touchscreen driver"); | |
641 | MODULE_LICENSE("GPL v2"); | |
642 | MODULE_AUTHOR("Heiko Stuebner <heiko@sntech.de>"); |