Commit | Line | Data |
---|---|---|
43c4d13e SB |
1 | /* |
2 | * Copyright (C) 2012 Simon Budig, <simon.budig@kernelconcepts.de> | |
fd335ab0 | 3 | * Daniel Wagener <daniel.wagener@kernelconcepts.de> (M09 firmware support) |
dac90dc2 | 4 | * Lothar Waßmann <LW@KARO-electronics.de> (DT support) |
43c4d13e SB |
5 | * |
6 | * This software is licensed under the terms of the GNU General Public | |
7 | * License version 2, as published by the Free Software Foundation, and | |
8 | * may be copied, distributed, and modified under those terms. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public | |
16 | * License along with this library; if not, write to the Free Software | |
17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
18 | */ | |
19 | ||
20 | /* | |
21 | * This is a driver for the EDT "Polytouch" family of touch controllers | |
22 | * based on the FocalTech FT5x06 line of chips. | |
23 | * | |
24 | * Development of this driver has been sponsored by Glyn: | |
25 | * http://www.glyn.com/Products/Displays | |
26 | */ | |
27 | ||
28 | #include <linux/module.h> | |
29 | #include <linux/ratelimit.h> | |
f0bef75c | 30 | #include <linux/irq.h> |
43c4d13e SB |
31 | #include <linux/interrupt.h> |
32 | #include <linux/input.h> | |
33 | #include <linux/i2c.h> | |
34 | #include <linux/uaccess.h> | |
35 | #include <linux/delay.h> | |
36 | #include <linux/debugfs.h> | |
37 | #include <linux/slab.h> | |
13c23cd1 | 38 | #include <linux/gpio/consumer.h> |
43c4d13e | 39 | #include <linux/input/mt.h> |
2c005598 | 40 | #include <linux/input/touchscreen.h> |
b1d2a3ec | 41 | #include <linux/of_device.h> |
43c4d13e SB |
42 | |
43 | #define WORK_REGISTER_THRESHOLD 0x00 | |
44 | #define WORK_REGISTER_REPORT_RATE 0x08 | |
45 | #define WORK_REGISTER_GAIN 0x30 | |
46 | #define WORK_REGISTER_OFFSET 0x31 | |
47 | #define WORK_REGISTER_NUM_X 0x33 | |
48 | #define WORK_REGISTER_NUM_Y 0x34 | |
49 | ||
fd335ab0 LW |
50 | #define M09_REGISTER_THRESHOLD 0x80 |
51 | #define M09_REGISTER_GAIN 0x92 | |
52 | #define M09_REGISTER_OFFSET 0x93 | |
53 | #define M09_REGISTER_NUM_X 0x94 | |
54 | #define M09_REGISTER_NUM_Y 0x95 | |
55 | ||
56 | #define NO_REGISTER 0xff | |
57 | ||
43c4d13e SB |
58 | #define WORK_REGISTER_OPMODE 0x3c |
59 | #define FACTORY_REGISTER_OPMODE 0x01 | |
60 | ||
61 | #define TOUCH_EVENT_DOWN 0x00 | |
62 | #define TOUCH_EVENT_UP 0x01 | |
63 | #define TOUCH_EVENT_ON 0x02 | |
64 | #define TOUCH_EVENT_RESERVED 0x03 | |
65 | ||
66 | #define EDT_NAME_LEN 23 | |
67 | #define EDT_SWITCH_MODE_RETRIES 10 | |
68 | #define EDT_SWITCH_MODE_DELAY 5 /* msec */ | |
69 | #define EDT_RAW_DATA_RETRIES 100 | |
70 | #define EDT_RAW_DATA_DELAY 1 /* msec */ | |
71 | ||
fd335ab0 LW |
72 | enum edt_ver { |
73 | M06, | |
74 | M09, | |
75 | }; | |
76 | ||
77 | struct edt_reg_addr { | |
78 | int reg_threshold; | |
79 | int reg_report_rate; | |
80 | int reg_gain; | |
81 | int reg_offset; | |
82 | int reg_num_x; | |
83 | int reg_num_y; | |
84 | }; | |
85 | ||
43c4d13e SB |
86 | struct edt_ft5x06_ts_data { |
87 | struct i2c_client *client; | |
88 | struct input_dev *input; | |
89 | u16 num_x; | |
90 | u16 num_y; | |
91 | ||
13c23cd1 FCJ |
92 | struct gpio_desc *reset_gpio; |
93 | struct gpio_desc *wake_gpio; | |
dac90dc2 | 94 | |
43c4d13e SB |
95 | #if defined(CONFIG_DEBUG_FS) |
96 | struct dentry *debug_dir; | |
97 | u8 *raw_buffer; | |
98 | size_t raw_bufsize; | |
99 | #endif | |
100 | ||
101 | struct mutex mutex; | |
102 | bool factory_mode; | |
103 | int threshold; | |
104 | int gain; | |
105 | int offset; | |
106 | int report_rate; | |
b1d2a3ec | 107 | int max_support_points; |
43c4d13e SB |
108 | |
109 | char name[EDT_NAME_LEN]; | |
fd335ab0 LW |
110 | |
111 | struct edt_reg_addr reg_addr; | |
112 | enum edt_ver version; | |
43c4d13e SB |
113 | }; |
114 | ||
b1d2a3ec FCJ |
115 | struct edt_i2c_chip_data { |
116 | int max_support_points; | |
117 | }; | |
118 | ||
43c4d13e SB |
119 | static int edt_ft5x06_ts_readwrite(struct i2c_client *client, |
120 | u16 wr_len, u8 *wr_buf, | |
121 | u16 rd_len, u8 *rd_buf) | |
122 | { | |
123 | struct i2c_msg wrmsg[2]; | |
124 | int i = 0; | |
125 | int ret; | |
126 | ||
127 | if (wr_len) { | |
128 | wrmsg[i].addr = client->addr; | |
129 | wrmsg[i].flags = 0; | |
130 | wrmsg[i].len = wr_len; | |
131 | wrmsg[i].buf = wr_buf; | |
132 | i++; | |
133 | } | |
134 | if (rd_len) { | |
135 | wrmsg[i].addr = client->addr; | |
136 | wrmsg[i].flags = I2C_M_RD; | |
137 | wrmsg[i].len = rd_len; | |
138 | wrmsg[i].buf = rd_buf; | |
139 | i++; | |
140 | } | |
141 | ||
142 | ret = i2c_transfer(client->adapter, wrmsg, i); | |
143 | if (ret < 0) | |
144 | return ret; | |
145 | if (ret != i) | |
146 | return -EIO; | |
147 | ||
148 | return 0; | |
149 | } | |
150 | ||
151 | static bool edt_ft5x06_ts_check_crc(struct edt_ft5x06_ts_data *tsdata, | |
152 | u8 *buf, int buflen) | |
153 | { | |
154 | int i; | |
155 | u8 crc = 0; | |
156 | ||
157 | for (i = 0; i < buflen - 1; i++) | |
158 | crc ^= buf[i]; | |
159 | ||
160 | if (crc != buf[buflen-1]) { | |
161 | dev_err_ratelimited(&tsdata->client->dev, | |
162 | "crc error: 0x%02x expected, got 0x%02x\n", | |
163 | crc, buf[buflen-1]); | |
164 | return false; | |
165 | } | |
166 | ||
167 | return true; | |
168 | } | |
169 | ||
170 | static irqreturn_t edt_ft5x06_ts_isr(int irq, void *dev_id) | |
171 | { | |
172 | struct edt_ft5x06_ts_data *tsdata = dev_id; | |
173 | struct device *dev = &tsdata->client->dev; | |
fd335ab0 | 174 | u8 cmd; |
9378c025 | 175 | u8 rdbuf[63]; |
43c4d13e | 176 | int i, type, x, y, id; |
c789f1fb | 177 | int offset, tplen, datalen, crclen; |
43c4d13e SB |
178 | int error; |
179 | ||
fd335ab0 LW |
180 | switch (tsdata->version) { |
181 | case M06: | |
182 | cmd = 0xf9; /* tell the controller to send touch data */ | |
183 | offset = 5; /* where the actual touch data starts */ | |
184 | tplen = 4; /* data comes in so called frames */ | |
c789f1fb | 185 | crclen = 1; /* length of the crc data */ |
fd335ab0 LW |
186 | break; |
187 | ||
188 | case M09: | |
9378c025 FCJ |
189 | cmd = 0x0; |
190 | offset = 3; | |
fd335ab0 | 191 | tplen = 6; |
c789f1fb | 192 | crclen = 0; |
fd335ab0 LW |
193 | break; |
194 | ||
195 | default: | |
196 | goto out; | |
197 | } | |
198 | ||
43c4d13e | 199 | memset(rdbuf, 0, sizeof(rdbuf)); |
b1d2a3ec | 200 | datalen = tplen * tsdata->max_support_points + offset + crclen; |
43c4d13e SB |
201 | |
202 | error = edt_ft5x06_ts_readwrite(tsdata->client, | |
203 | sizeof(cmd), &cmd, | |
fd335ab0 | 204 | datalen, rdbuf); |
43c4d13e SB |
205 | if (error) { |
206 | dev_err_ratelimited(dev, "Unable to fetch data, error: %d\n", | |
207 | error); | |
208 | goto out; | |
209 | } | |
210 | ||
fd335ab0 LW |
211 | /* M09 does not send header or CRC */ |
212 | if (tsdata->version == M06) { | |
213 | if (rdbuf[0] != 0xaa || rdbuf[1] != 0xaa || | |
214 | rdbuf[2] != datalen) { | |
215 | dev_err_ratelimited(dev, | |
216 | "Unexpected header: %02x%02x%02x!\n", | |
217 | rdbuf[0], rdbuf[1], rdbuf[2]); | |
218 | goto out; | |
219 | } | |
43c4d13e | 220 | |
fd335ab0 LW |
221 | if (!edt_ft5x06_ts_check_crc(tsdata, rdbuf, datalen)) |
222 | goto out; | |
223 | } | |
43c4d13e | 224 | |
b1d2a3ec | 225 | for (i = 0; i < tsdata->max_support_points; i++) { |
fd335ab0 | 226 | u8 *buf = &rdbuf[i * tplen + offset]; |
43c4d13e SB |
227 | bool down; |
228 | ||
229 | type = buf[0] >> 6; | |
230 | /* ignore Reserved events */ | |
231 | if (type == TOUCH_EVENT_RESERVED) | |
232 | continue; | |
233 | ||
fd335ab0 LW |
234 | /* M06 sometimes sends bogus coordinates in TOUCH_DOWN */ |
235 | if (tsdata->version == M06 && type == TOUCH_EVENT_DOWN) | |
ee3e946e LW |
236 | continue; |
237 | ||
43c4d13e SB |
238 | x = ((buf[0] << 8) | buf[1]) & 0x0fff; |
239 | y = ((buf[2] << 8) | buf[3]) & 0x0fff; | |
240 | id = (buf[2] >> 4) & 0x0f; | |
1730d814 | 241 | down = type != TOUCH_EVENT_UP; |
43c4d13e SB |
242 | |
243 | input_mt_slot(tsdata->input, id); | |
244 | input_mt_report_slot_state(tsdata->input, MT_TOOL_FINGER, down); | |
245 | ||
246 | if (!down) | |
247 | continue; | |
248 | ||
249 | input_report_abs(tsdata->input, ABS_MT_POSITION_X, x); | |
250 | input_report_abs(tsdata->input, ABS_MT_POSITION_Y, y); | |
251 | } | |
252 | ||
253 | input_mt_report_pointer_emulation(tsdata->input, true); | |
254 | input_sync(tsdata->input); | |
255 | ||
256 | out: | |
257 | return IRQ_HANDLED; | |
258 | } | |
259 | ||
260 | static int edt_ft5x06_register_write(struct edt_ft5x06_ts_data *tsdata, | |
261 | u8 addr, u8 value) | |
262 | { | |
263 | u8 wrbuf[4]; | |
264 | ||
fd335ab0 LW |
265 | switch (tsdata->version) { |
266 | case M06: | |
267 | wrbuf[0] = tsdata->factory_mode ? 0xf3 : 0xfc; | |
268 | wrbuf[1] = tsdata->factory_mode ? addr & 0x7f : addr & 0x3f; | |
fd335ab0 LW |
269 | wrbuf[2] = value; |
270 | wrbuf[3] = wrbuf[0] ^ wrbuf[1] ^ wrbuf[2]; | |
271 | return edt_ft5x06_ts_readwrite(tsdata->client, 4, | |
272 | wrbuf, 0, NULL); | |
273 | case M09: | |
274 | wrbuf[0] = addr; | |
275 | wrbuf[1] = value; | |
276 | ||
cc071aca | 277 | return edt_ft5x06_ts_readwrite(tsdata->client, 2, |
fd335ab0 LW |
278 | wrbuf, 0, NULL); |
279 | ||
280 | default: | |
281 | return -EINVAL; | |
282 | } | |
43c4d13e SB |
283 | } |
284 | ||
285 | static int edt_ft5x06_register_read(struct edt_ft5x06_ts_data *tsdata, | |
286 | u8 addr) | |
287 | { | |
288 | u8 wrbuf[2], rdbuf[2]; | |
289 | int error; | |
290 | ||
fd335ab0 LW |
291 | switch (tsdata->version) { |
292 | case M06: | |
293 | wrbuf[0] = tsdata->factory_mode ? 0xf3 : 0xfc; | |
294 | wrbuf[1] = tsdata->factory_mode ? addr & 0x7f : addr & 0x3f; | |
295 | wrbuf[1] |= tsdata->factory_mode ? 0x80 : 0x40; | |
43c4d13e | 296 | |
e2c3ecf0 DC |
297 | error = edt_ft5x06_ts_readwrite(tsdata->client, 2, wrbuf, 2, |
298 | rdbuf); | |
299 | if (error) | |
300 | return error; | |
43c4d13e | 301 | |
fd335ab0 LW |
302 | if ((wrbuf[0] ^ wrbuf[1] ^ rdbuf[0]) != rdbuf[1]) { |
303 | dev_err(&tsdata->client->dev, | |
304 | "crc error: 0x%02x expected, got 0x%02x\n", | |
305 | wrbuf[0] ^ wrbuf[1] ^ rdbuf[0], | |
306 | rdbuf[1]); | |
307 | return -EIO; | |
308 | } | |
309 | break; | |
310 | ||
311 | case M09: | |
312 | wrbuf[0] = addr; | |
313 | error = edt_ft5x06_ts_readwrite(tsdata->client, 1, | |
314 | wrbuf, 1, rdbuf); | |
315 | if (error) | |
316 | return error; | |
317 | break; | |
318 | ||
319 | default: | |
320 | return -EINVAL; | |
43c4d13e SB |
321 | } |
322 | ||
323 | return rdbuf[0]; | |
324 | } | |
325 | ||
326 | struct edt_ft5x06_attribute { | |
327 | struct device_attribute dattr; | |
328 | size_t field_offset; | |
329 | u8 limit_low; | |
330 | u8 limit_high; | |
fd335ab0 LW |
331 | u8 addr_m06; |
332 | u8 addr_m09; | |
43c4d13e SB |
333 | }; |
334 | ||
fd335ab0 LW |
335 | #define EDT_ATTR(_field, _mode, _addr_m06, _addr_m09, \ |
336 | _limit_low, _limit_high) \ | |
43c4d13e SB |
337 | struct edt_ft5x06_attribute edt_ft5x06_attr_##_field = { \ |
338 | .dattr = __ATTR(_field, _mode, \ | |
339 | edt_ft5x06_setting_show, \ | |
340 | edt_ft5x06_setting_store), \ | |
fd335ab0 LW |
341 | .field_offset = offsetof(struct edt_ft5x06_ts_data, _field), \ |
342 | .addr_m06 = _addr_m06, \ | |
343 | .addr_m09 = _addr_m09, \ | |
43c4d13e SB |
344 | .limit_low = _limit_low, \ |
345 | .limit_high = _limit_high, \ | |
43c4d13e SB |
346 | } |
347 | ||
348 | static ssize_t edt_ft5x06_setting_show(struct device *dev, | |
349 | struct device_attribute *dattr, | |
350 | char *buf) | |
351 | { | |
352 | struct i2c_client *client = to_i2c_client(dev); | |
353 | struct edt_ft5x06_ts_data *tsdata = i2c_get_clientdata(client); | |
354 | struct edt_ft5x06_attribute *attr = | |
355 | container_of(dattr, struct edt_ft5x06_attribute, dattr); | |
1730d814 | 356 | u8 *field = (u8 *)tsdata + attr->field_offset; |
43c4d13e SB |
357 | int val; |
358 | size_t count = 0; | |
359 | int error = 0; | |
fd335ab0 | 360 | u8 addr; |
43c4d13e SB |
361 | |
362 | mutex_lock(&tsdata->mutex); | |
363 | ||
364 | if (tsdata->factory_mode) { | |
365 | error = -EIO; | |
366 | goto out; | |
367 | } | |
368 | ||
fd335ab0 LW |
369 | switch (tsdata->version) { |
370 | case M06: | |
371 | addr = attr->addr_m06; | |
372 | break; | |
373 | ||
374 | case M09: | |
375 | addr = attr->addr_m09; | |
376 | break; | |
377 | ||
378 | default: | |
379 | error = -ENODEV; | |
43c4d13e SB |
380 | goto out; |
381 | } | |
382 | ||
fd335ab0 LW |
383 | if (addr != NO_REGISTER) { |
384 | val = edt_ft5x06_register_read(tsdata, addr); | |
385 | if (val < 0) { | |
386 | error = val; | |
387 | dev_err(&tsdata->client->dev, | |
388 | "Failed to fetch attribute %s, error %d\n", | |
389 | dattr->attr.name, error); | |
390 | goto out; | |
391 | } | |
392 | } else { | |
393 | val = *field; | |
394 | } | |
395 | ||
43c4d13e SB |
396 | if (val != *field) { |
397 | dev_warn(&tsdata->client->dev, | |
398 | "%s: read (%d) and stored value (%d) differ\n", | |
399 | dattr->attr.name, val, *field); | |
400 | *field = val; | |
401 | } | |
402 | ||
403 | count = scnprintf(buf, PAGE_SIZE, "%d\n", val); | |
404 | out: | |
405 | mutex_unlock(&tsdata->mutex); | |
406 | return error ?: count; | |
407 | } | |
408 | ||
409 | static ssize_t edt_ft5x06_setting_store(struct device *dev, | |
410 | struct device_attribute *dattr, | |
411 | const char *buf, size_t count) | |
412 | { | |
413 | struct i2c_client *client = to_i2c_client(dev); | |
414 | struct edt_ft5x06_ts_data *tsdata = i2c_get_clientdata(client); | |
415 | struct edt_ft5x06_attribute *attr = | |
416 | container_of(dattr, struct edt_ft5x06_attribute, dattr); | |
1730d814 | 417 | u8 *field = (u8 *)tsdata + attr->field_offset; |
43c4d13e SB |
418 | unsigned int val; |
419 | int error; | |
fd335ab0 | 420 | u8 addr; |
43c4d13e SB |
421 | |
422 | mutex_lock(&tsdata->mutex); | |
423 | ||
424 | if (tsdata->factory_mode) { | |
425 | error = -EIO; | |
426 | goto out; | |
427 | } | |
428 | ||
429 | error = kstrtouint(buf, 0, &val); | |
430 | if (error) | |
431 | goto out; | |
432 | ||
433 | if (val < attr->limit_low || val > attr->limit_high) { | |
434 | error = -ERANGE; | |
435 | goto out; | |
436 | } | |
437 | ||
fd335ab0 LW |
438 | switch (tsdata->version) { |
439 | case M06: | |
440 | addr = attr->addr_m06; | |
441 | break; | |
442 | ||
443 | case M09: | |
444 | addr = attr->addr_m09; | |
445 | break; | |
446 | ||
447 | default: | |
448 | error = -ENODEV; | |
43c4d13e SB |
449 | goto out; |
450 | } | |
451 | ||
fd335ab0 LW |
452 | if (addr != NO_REGISTER) { |
453 | error = edt_ft5x06_register_write(tsdata, addr, val); | |
454 | if (error) { | |
455 | dev_err(&tsdata->client->dev, | |
456 | "Failed to update attribute %s, error: %d\n", | |
457 | dattr->attr.name, error); | |
458 | goto out; | |
459 | } | |
460 | } | |
43c4d13e SB |
461 | *field = val; |
462 | ||
463 | out: | |
464 | mutex_unlock(&tsdata->mutex); | |
465 | return error ?: count; | |
466 | } | |
467 | ||
fd335ab0 LW |
468 | static EDT_ATTR(gain, S_IWUSR | S_IRUGO, WORK_REGISTER_GAIN, |
469 | M09_REGISTER_GAIN, 0, 31); | |
470 | static EDT_ATTR(offset, S_IWUSR | S_IRUGO, WORK_REGISTER_OFFSET, | |
471 | M09_REGISTER_OFFSET, 0, 31); | |
472 | static EDT_ATTR(threshold, S_IWUSR | S_IRUGO, WORK_REGISTER_THRESHOLD, | |
473 | M09_REGISTER_THRESHOLD, 20, 80); | |
474 | static EDT_ATTR(report_rate, S_IWUSR | S_IRUGO, WORK_REGISTER_REPORT_RATE, | |
475 | NO_REGISTER, 3, 14); | |
43c4d13e SB |
476 | |
477 | static struct attribute *edt_ft5x06_attrs[] = { | |
478 | &edt_ft5x06_attr_gain.dattr.attr, | |
479 | &edt_ft5x06_attr_offset.dattr.attr, | |
480 | &edt_ft5x06_attr_threshold.dattr.attr, | |
481 | &edt_ft5x06_attr_report_rate.dattr.attr, | |
482 | NULL | |
483 | }; | |
484 | ||
485 | static const struct attribute_group edt_ft5x06_attr_group = { | |
486 | .attrs = edt_ft5x06_attrs, | |
487 | }; | |
488 | ||
489 | #ifdef CONFIG_DEBUG_FS | |
490 | static int edt_ft5x06_factory_mode(struct edt_ft5x06_ts_data *tsdata) | |
491 | { | |
492 | struct i2c_client *client = tsdata->client; | |
493 | int retries = EDT_SWITCH_MODE_RETRIES; | |
494 | int ret; | |
495 | int error; | |
496 | ||
497 | disable_irq(client->irq); | |
498 | ||
499 | if (!tsdata->raw_buffer) { | |
500 | tsdata->raw_bufsize = tsdata->num_x * tsdata->num_y * | |
501 | sizeof(u16); | |
502 | tsdata->raw_buffer = kzalloc(tsdata->raw_bufsize, GFP_KERNEL); | |
503 | if (!tsdata->raw_buffer) { | |
504 | error = -ENOMEM; | |
505 | goto err_out; | |
506 | } | |
507 | } | |
508 | ||
509 | /* mode register is 0x3c when in the work mode */ | |
fd335ab0 LW |
510 | if (tsdata->version == M09) |
511 | goto m09_out; | |
512 | ||
43c4d13e SB |
513 | error = edt_ft5x06_register_write(tsdata, WORK_REGISTER_OPMODE, 0x03); |
514 | if (error) { | |
515 | dev_err(&client->dev, | |
516 | "failed to switch to factory mode, error %d\n", error); | |
517 | goto err_out; | |
518 | } | |
519 | ||
520 | tsdata->factory_mode = true; | |
521 | do { | |
522 | mdelay(EDT_SWITCH_MODE_DELAY); | |
523 | /* mode register is 0x01 when in factory mode */ | |
524 | ret = edt_ft5x06_register_read(tsdata, FACTORY_REGISTER_OPMODE); | |
525 | if (ret == 0x03) | |
526 | break; | |
527 | } while (--retries > 0); | |
528 | ||
529 | if (retries == 0) { | |
530 | dev_err(&client->dev, "not in factory mode after %dms.\n", | |
531 | EDT_SWITCH_MODE_RETRIES * EDT_SWITCH_MODE_DELAY); | |
532 | error = -EIO; | |
533 | goto err_out; | |
534 | } | |
535 | ||
536 | return 0; | |
537 | ||
538 | err_out: | |
539 | kfree(tsdata->raw_buffer); | |
540 | tsdata->raw_buffer = NULL; | |
541 | tsdata->factory_mode = false; | |
542 | enable_irq(client->irq); | |
543 | ||
544 | return error; | |
fd335ab0 LW |
545 | |
546 | m09_out: | |
547 | dev_err(&client->dev, "No factory mode support for M09\n"); | |
548 | return -EINVAL; | |
549 | ||
43c4d13e SB |
550 | } |
551 | ||
552 | static int edt_ft5x06_work_mode(struct edt_ft5x06_ts_data *tsdata) | |
553 | { | |
554 | struct i2c_client *client = tsdata->client; | |
555 | int retries = EDT_SWITCH_MODE_RETRIES; | |
fd335ab0 | 556 | struct edt_reg_addr *reg_addr = &tsdata->reg_addr; |
43c4d13e SB |
557 | int ret; |
558 | int error; | |
559 | ||
560 | /* mode register is 0x01 when in the factory mode */ | |
561 | error = edt_ft5x06_register_write(tsdata, FACTORY_REGISTER_OPMODE, 0x1); | |
562 | if (error) { | |
563 | dev_err(&client->dev, | |
564 | "failed to switch to work mode, error: %d\n", error); | |
565 | return error; | |
566 | } | |
567 | ||
568 | tsdata->factory_mode = false; | |
569 | ||
570 | do { | |
571 | mdelay(EDT_SWITCH_MODE_DELAY); | |
572 | /* mode register is 0x01 when in factory mode */ | |
573 | ret = edt_ft5x06_register_read(tsdata, WORK_REGISTER_OPMODE); | |
574 | if (ret == 0x01) | |
575 | break; | |
576 | } while (--retries > 0); | |
577 | ||
578 | if (retries == 0) { | |
579 | dev_err(&client->dev, "not in work mode after %dms.\n", | |
580 | EDT_SWITCH_MODE_RETRIES * EDT_SWITCH_MODE_DELAY); | |
581 | tsdata->factory_mode = true; | |
582 | return -EIO; | |
583 | } | |
584 | ||
8efcc503 | 585 | kfree(tsdata->raw_buffer); |
43c4d13e SB |
586 | tsdata->raw_buffer = NULL; |
587 | ||
588 | /* restore parameters */ | |
fd335ab0 | 589 | edt_ft5x06_register_write(tsdata, reg_addr->reg_threshold, |
43c4d13e | 590 | tsdata->threshold); |
fd335ab0 | 591 | edt_ft5x06_register_write(tsdata, reg_addr->reg_gain, |
43c4d13e | 592 | tsdata->gain); |
fd335ab0 | 593 | edt_ft5x06_register_write(tsdata, reg_addr->reg_offset, |
43c4d13e | 594 | tsdata->offset); |
fd335ab0 LW |
595 | if (reg_addr->reg_report_rate) |
596 | edt_ft5x06_register_write(tsdata, reg_addr->reg_report_rate, | |
43c4d13e SB |
597 | tsdata->report_rate); |
598 | ||
599 | enable_irq(client->irq); | |
600 | ||
601 | return 0; | |
602 | } | |
603 | ||
604 | static int edt_ft5x06_debugfs_mode_get(void *data, u64 *mode) | |
605 | { | |
606 | struct edt_ft5x06_ts_data *tsdata = data; | |
607 | ||
608 | *mode = tsdata->factory_mode; | |
609 | ||
610 | return 0; | |
611 | }; | |
612 | ||
613 | static int edt_ft5x06_debugfs_mode_set(void *data, u64 mode) | |
614 | { | |
615 | struct edt_ft5x06_ts_data *tsdata = data; | |
616 | int retval = 0; | |
617 | ||
618 | if (mode > 1) | |
619 | return -ERANGE; | |
620 | ||
621 | mutex_lock(&tsdata->mutex); | |
622 | ||
623 | if (mode != tsdata->factory_mode) { | |
624 | retval = mode ? edt_ft5x06_factory_mode(tsdata) : | |
1730d814 | 625 | edt_ft5x06_work_mode(tsdata); |
43c4d13e SB |
626 | } |
627 | ||
628 | mutex_unlock(&tsdata->mutex); | |
629 | ||
630 | return retval; | |
631 | }; | |
632 | ||
633 | DEFINE_SIMPLE_ATTRIBUTE(debugfs_mode_fops, edt_ft5x06_debugfs_mode_get, | |
634 | edt_ft5x06_debugfs_mode_set, "%llu\n"); | |
635 | ||
43c4d13e SB |
636 | static ssize_t edt_ft5x06_debugfs_raw_data_read(struct file *file, |
637 | char __user *buf, size_t count, loff_t *off) | |
638 | { | |
639 | struct edt_ft5x06_ts_data *tsdata = file->private_data; | |
640 | struct i2c_client *client = tsdata->client; | |
641 | int retries = EDT_RAW_DATA_RETRIES; | |
642 | int val, i, error; | |
643 | size_t read = 0; | |
644 | int colbytes; | |
645 | char wrbuf[3]; | |
646 | u8 *rdbuf; | |
647 | ||
648 | if (*off < 0 || *off >= tsdata->raw_bufsize) | |
649 | return 0; | |
650 | ||
651 | mutex_lock(&tsdata->mutex); | |
652 | ||
653 | if (!tsdata->factory_mode || !tsdata->raw_buffer) { | |
654 | error = -EIO; | |
655 | goto out; | |
656 | } | |
657 | ||
658 | error = edt_ft5x06_register_write(tsdata, 0x08, 0x01); | |
659 | if (error) { | |
660 | dev_dbg(&client->dev, | |
661 | "failed to write 0x08 register, error %d\n", error); | |
662 | goto out; | |
663 | } | |
664 | ||
665 | do { | |
666 | msleep(EDT_RAW_DATA_DELAY); | |
667 | val = edt_ft5x06_register_read(tsdata, 0x08); | |
668 | if (val < 1) | |
669 | break; | |
670 | } while (--retries > 0); | |
671 | ||
672 | if (val < 0) { | |
673 | error = val; | |
674 | dev_dbg(&client->dev, | |
675 | "failed to read 0x08 register, error %d\n", error); | |
676 | goto out; | |
677 | } | |
678 | ||
679 | if (retries == 0) { | |
680 | dev_dbg(&client->dev, | |
681 | "timed out waiting for register to settle\n"); | |
682 | error = -ETIMEDOUT; | |
683 | goto out; | |
684 | } | |
685 | ||
686 | rdbuf = tsdata->raw_buffer; | |
687 | colbytes = tsdata->num_y * sizeof(u16); | |
688 | ||
689 | wrbuf[0] = 0xf5; | |
690 | wrbuf[1] = 0x0e; | |
691 | for (i = 0; i < tsdata->num_x; i++) { | |
692 | wrbuf[2] = i; /* column index */ | |
693 | error = edt_ft5x06_ts_readwrite(tsdata->client, | |
694 | sizeof(wrbuf), wrbuf, | |
695 | colbytes, rdbuf); | |
696 | if (error) | |
697 | goto out; | |
698 | ||
699 | rdbuf += colbytes; | |
700 | } | |
701 | ||
702 | read = min_t(size_t, count, tsdata->raw_bufsize - *off); | |
35b1da4e AL |
703 | if (copy_to_user(buf, tsdata->raw_buffer + *off, read)) { |
704 | error = -EFAULT; | |
705 | goto out; | |
706 | } | |
707 | ||
708 | *off += read; | |
43c4d13e SB |
709 | out: |
710 | mutex_unlock(&tsdata->mutex); | |
711 | return error ?: read; | |
712 | }; | |
713 | ||
43c4d13e | 714 | static const struct file_operations debugfs_raw_data_fops = { |
f6c0df6a | 715 | .open = simple_open, |
43c4d13e SB |
716 | .read = edt_ft5x06_debugfs_raw_data_read, |
717 | }; | |
718 | ||
5298cc4c | 719 | static void |
43c4d13e SB |
720 | edt_ft5x06_ts_prepare_debugfs(struct edt_ft5x06_ts_data *tsdata, |
721 | const char *debugfs_name) | |
722 | { | |
723 | tsdata->debug_dir = debugfs_create_dir(debugfs_name, NULL); | |
724 | if (!tsdata->debug_dir) | |
725 | return; | |
726 | ||
727 | debugfs_create_u16("num_x", S_IRUSR, tsdata->debug_dir, &tsdata->num_x); | |
728 | debugfs_create_u16("num_y", S_IRUSR, tsdata->debug_dir, &tsdata->num_y); | |
729 | ||
730 | debugfs_create_file("mode", S_IRUSR | S_IWUSR, | |
731 | tsdata->debug_dir, tsdata, &debugfs_mode_fops); | |
732 | debugfs_create_file("raw_data", S_IRUSR, | |
733 | tsdata->debug_dir, tsdata, &debugfs_raw_data_fops); | |
734 | } | |
735 | ||
e2619cf7 | 736 | static void |
43c4d13e SB |
737 | edt_ft5x06_ts_teardown_debugfs(struct edt_ft5x06_ts_data *tsdata) |
738 | { | |
f69c6ec2 | 739 | debugfs_remove_recursive(tsdata->debug_dir); |
a1d0fa77 | 740 | kfree(tsdata->raw_buffer); |
43c4d13e SB |
741 | } |
742 | ||
743 | #else | |
744 | ||
745 | static inline void | |
746 | edt_ft5x06_ts_prepare_debugfs(struct edt_ft5x06_ts_data *tsdata, | |
747 | const char *debugfs_name) | |
748 | { | |
749 | } | |
750 | ||
751 | static inline void | |
752 | edt_ft5x06_ts_teardown_debugfs(struct edt_ft5x06_ts_data *tsdata) | |
753 | { | |
754 | } | |
755 | ||
756 | #endif /* CONFIG_DEBUGFS */ | |
757 | ||
5298cc4c | 758 | static int edt_ft5x06_ts_identify(struct i2c_client *client, |
fd335ab0 LW |
759 | struct edt_ft5x06_ts_data *tsdata, |
760 | char *fw_version) | |
43c4d13e SB |
761 | { |
762 | u8 rdbuf[EDT_NAME_LEN]; | |
763 | char *p; | |
764 | int error; | |
fd335ab0 | 765 | char *model_name = tsdata->name; |
43c4d13e | 766 | |
fd335ab0 LW |
767 | /* see what we find if we assume it is a M06 * |
768 | * if we get less than EDT_NAME_LEN, we don't want | |
769 | * to have garbage in there | |
770 | */ | |
771 | memset(rdbuf, 0, sizeof(rdbuf)); | |
43c4d13e SB |
772 | error = edt_ft5x06_ts_readwrite(client, 1, "\xbb", |
773 | EDT_NAME_LEN - 1, rdbuf); | |
774 | if (error) | |
775 | return error; | |
776 | ||
fd335ab0 LW |
777 | /* if we find something consistent, stay with that assumption |
778 | * at least M09 won't send 3 bytes here | |
779 | */ | |
0f3ae5ba | 780 | if (!(strncasecmp(rdbuf + 1, "EP0", 3))) { |
fd335ab0 LW |
781 | tsdata->version = M06; |
782 | ||
783 | /* remove last '$' end marker */ | |
784 | rdbuf[EDT_NAME_LEN - 1] = '\0'; | |
785 | if (rdbuf[EDT_NAME_LEN - 2] == '$') | |
786 | rdbuf[EDT_NAME_LEN - 2] = '\0'; | |
787 | ||
788 | /* look for Model/Version separator */ | |
789 | p = strchr(rdbuf, '*'); | |
790 | if (p) | |
791 | *p++ = '\0'; | |
792 | strlcpy(model_name, rdbuf + 1, EDT_NAME_LEN); | |
793 | strlcpy(fw_version, p ? p : "", EDT_NAME_LEN); | |
794 | } else { | |
795 | /* since there are only two versions around (M06, M09) */ | |
796 | tsdata->version = M09; | |
797 | ||
798 | error = edt_ft5x06_ts_readwrite(client, 1, "\xA6", | |
799 | 2, rdbuf); | |
800 | if (error) | |
801 | return error; | |
43c4d13e | 802 | |
fd335ab0 | 803 | strlcpy(fw_version, rdbuf, 2); |
43c4d13e | 804 | |
fd335ab0 LW |
805 | error = edt_ft5x06_ts_readwrite(client, 1, "\xA8", |
806 | 1, rdbuf); | |
807 | if (error) | |
808 | return error; | |
809 | ||
810 | snprintf(model_name, EDT_NAME_LEN, "EP0%i%i0M09", | |
811 | rdbuf[0] >> 4, rdbuf[0] & 0x0F); | |
812 | } | |
43c4d13e SB |
813 | |
814 | return 0; | |
815 | } | |
816 | ||
2e23b7a9 | 817 | static void edt_ft5x06_ts_get_defaults(struct device *dev, |
22ddbacc | 818 | struct edt_ft5x06_ts_data *tsdata) |
dac90dc2 | 819 | { |
fd335ab0 | 820 | struct edt_reg_addr *reg_addr = &tsdata->reg_addr; |
2e23b7a9 DT |
821 | u32 val; |
822 | int error; | |
823 | ||
824 | error = device_property_read_u32(dev, "threshold", &val); | |
dc262dfa PZ |
825 | if (!error) { |
826 | edt_ft5x06_register_write(tsdata, reg_addr->reg_threshold, val); | |
827 | tsdata->threshold = val; | |
828 | } | |
2e23b7a9 DT |
829 | |
830 | error = device_property_read_u32(dev, "gain", &val); | |
dc262dfa PZ |
831 | if (!error) { |
832 | edt_ft5x06_register_write(tsdata, reg_addr->reg_gain, val); | |
833 | tsdata->gain = val; | |
834 | } | |
fd335ab0 | 835 | |
2e23b7a9 | 836 | error = device_property_read_u32(dev, "offset", &val); |
dc262dfa PZ |
837 | if (!error) { |
838 | edt_ft5x06_register_write(tsdata, reg_addr->reg_offset, val); | |
839 | tsdata->offset = val; | |
840 | } | |
dac90dc2 LW |
841 | } |
842 | ||
5298cc4c | 843 | static void |
43c4d13e SB |
844 | edt_ft5x06_ts_get_parameters(struct edt_ft5x06_ts_data *tsdata) |
845 | { | |
fd335ab0 LW |
846 | struct edt_reg_addr *reg_addr = &tsdata->reg_addr; |
847 | ||
43c4d13e | 848 | tsdata->threshold = edt_ft5x06_register_read(tsdata, |
fd335ab0 LW |
849 | reg_addr->reg_threshold); |
850 | tsdata->gain = edt_ft5x06_register_read(tsdata, reg_addr->reg_gain); | |
851 | tsdata->offset = edt_ft5x06_register_read(tsdata, reg_addr->reg_offset); | |
852 | if (reg_addr->reg_report_rate != NO_REGISTER) | |
853 | tsdata->report_rate = edt_ft5x06_register_read(tsdata, | |
854 | reg_addr->reg_report_rate); | |
855 | tsdata->num_x = edt_ft5x06_register_read(tsdata, reg_addr->reg_num_x); | |
856 | tsdata->num_y = edt_ft5x06_register_read(tsdata, reg_addr->reg_num_y); | |
857 | } | |
858 | ||
859 | static void | |
860 | edt_ft5x06_ts_set_regs(struct edt_ft5x06_ts_data *tsdata) | |
861 | { | |
862 | struct edt_reg_addr *reg_addr = &tsdata->reg_addr; | |
863 | ||
864 | switch (tsdata->version) { | |
865 | case M06: | |
866 | reg_addr->reg_threshold = WORK_REGISTER_THRESHOLD; | |
867 | reg_addr->reg_report_rate = WORK_REGISTER_REPORT_RATE; | |
868 | reg_addr->reg_gain = WORK_REGISTER_GAIN; | |
869 | reg_addr->reg_offset = WORK_REGISTER_OFFSET; | |
870 | reg_addr->reg_num_x = WORK_REGISTER_NUM_X; | |
871 | reg_addr->reg_num_y = WORK_REGISTER_NUM_Y; | |
872 | break; | |
873 | ||
874 | case M09: | |
875 | reg_addr->reg_threshold = M09_REGISTER_THRESHOLD; | |
876 | reg_addr->reg_gain = M09_REGISTER_GAIN; | |
877 | reg_addr->reg_offset = M09_REGISTER_OFFSET; | |
878 | reg_addr->reg_num_x = M09_REGISTER_NUM_X; | |
879 | reg_addr->reg_num_y = M09_REGISTER_NUM_Y; | |
880 | break; | |
881 | } | |
43c4d13e SB |
882 | } |
883 | ||
5298cc4c | 884 | static int edt_ft5x06_ts_probe(struct i2c_client *client, |
43c4d13e SB |
885 | const struct i2c_device_id *id) |
886 | { | |
b1d2a3ec | 887 | const struct edt_i2c_chip_data *chip_data; |
43c4d13e SB |
888 | struct edt_ft5x06_ts_data *tsdata; |
889 | struct input_dev *input; | |
f0bef75c | 890 | unsigned long irq_flags; |
43c4d13e SB |
891 | int error; |
892 | char fw_version[EDT_NAME_LEN]; | |
893 | ||
894 | dev_dbg(&client->dev, "probing for EDT FT5x06 I2C\n"); | |
895 | ||
dac90dc2 LW |
896 | tsdata = devm_kzalloc(&client->dev, sizeof(*tsdata), GFP_KERNEL); |
897 | if (!tsdata) { | |
898 | dev_err(&client->dev, "failed to allocate driver data.\n"); | |
899 | return -ENOMEM; | |
900 | } | |
901 | ||
b1d2a3ec FCJ |
902 | chip_data = of_device_get_match_data(&client->dev); |
903 | if (!chip_data) | |
904 | chip_data = (const struct edt_i2c_chip_data *)id->driver_data; | |
905 | if (!chip_data || !chip_data->max_support_points) { | |
906 | dev_err(&client->dev, "invalid or missing chip data\n"); | |
907 | return -EINVAL; | |
908 | } | |
909 | ||
910 | tsdata->max_support_points = chip_data->max_support_points; | |
911 | ||
13c23cd1 FCJ |
912 | tsdata->reset_gpio = devm_gpiod_get_optional(&client->dev, |
913 | "reset", GPIOD_OUT_HIGH); | |
914 | if (IS_ERR(tsdata->reset_gpio)) { | |
915 | error = PTR_ERR(tsdata->reset_gpio); | |
916 | dev_err(&client->dev, | |
917 | "Failed to request GPIO reset pin, error %d\n", error); | |
918 | return error; | |
43c4d13e SB |
919 | } |
920 | ||
13c23cd1 FCJ |
921 | tsdata->wake_gpio = devm_gpiod_get_optional(&client->dev, |
922 | "wake", GPIOD_OUT_LOW); | |
923 | if (IS_ERR(tsdata->wake_gpio)) { | |
924 | error = PTR_ERR(tsdata->wake_gpio); | |
925 | dev_err(&client->dev, | |
926 | "Failed to request GPIO wake pin, error %d\n", error); | |
43c4d13e | 927 | return error; |
13c23cd1 | 928 | } |
43c4d13e | 929 | |
13c23cd1 FCJ |
930 | if (tsdata->wake_gpio) { |
931 | usleep_range(5000, 6000); | |
932 | gpiod_set_value_cansleep(tsdata->wake_gpio, 1); | |
933 | } | |
934 | ||
935 | if (tsdata->reset_gpio) { | |
936 | usleep_range(5000, 6000); | |
937 | gpiod_set_value_cansleep(tsdata->reset_gpio, 0); | |
938 | msleep(300); | |
43c4d13e SB |
939 | } |
940 | ||
02300bd6 LW |
941 | input = devm_input_allocate_device(&client->dev); |
942 | if (!input) { | |
943 | dev_err(&client->dev, "failed to allocate input device.\n"); | |
944 | return -ENOMEM; | |
43c4d13e SB |
945 | } |
946 | ||
947 | mutex_init(&tsdata->mutex); | |
948 | tsdata->client = client; | |
949 | tsdata->input = input; | |
950 | tsdata->factory_mode = false; | |
951 | ||
fd335ab0 | 952 | error = edt_ft5x06_ts_identify(client, tsdata, fw_version); |
43c4d13e SB |
953 | if (error) { |
954 | dev_err(&client->dev, "touchscreen probe failed\n"); | |
02300bd6 | 955 | return error; |
43c4d13e SB |
956 | } |
957 | ||
fd335ab0 | 958 | edt_ft5x06_ts_set_regs(tsdata); |
2e23b7a9 | 959 | edt_ft5x06_ts_get_defaults(&client->dev, tsdata); |
43c4d13e SB |
960 | edt_ft5x06_ts_get_parameters(tsdata); |
961 | ||
962 | dev_dbg(&client->dev, | |
963 | "Model \"%s\", Rev. \"%s\", %dx%d sensors\n", | |
964 | tsdata->name, fw_version, tsdata->num_x, tsdata->num_y); | |
965 | ||
966 | input->name = tsdata->name; | |
967 | input->id.bustype = BUS_I2C; | |
968 | input->dev.parent = &client->dev; | |
969 | ||
43c4d13e SB |
970 | input_set_abs_params(input, ABS_MT_POSITION_X, |
971 | 0, tsdata->num_x * 64 - 1, 0, 0); | |
972 | input_set_abs_params(input, ABS_MT_POSITION_Y, | |
973 | 0, tsdata->num_y * 64 - 1, 0, 0); | |
2c005598 | 974 | |
22ddbacc | 975 | touchscreen_parse_properties(input, true); |
2c005598 | 976 | |
b1d2a3ec FCJ |
977 | error = input_mt_init_slots(input, tsdata->max_support_points, |
978 | INPUT_MT_DIRECT); | |
43c4d13e SB |
979 | if (error) { |
980 | dev_err(&client->dev, "Unable to init MT slots.\n"); | |
02300bd6 | 981 | return error; |
43c4d13e SB |
982 | } |
983 | ||
984 | input_set_drvdata(input, tsdata); | |
985 | i2c_set_clientdata(client, tsdata); | |
986 | ||
f0bef75c DT |
987 | irq_flags = irq_get_trigger_type(client->irq); |
988 | if (irq_flags == IRQF_TRIGGER_NONE) | |
989 | irq_flags = IRQF_TRIGGER_FALLING; | |
990 | irq_flags |= IRQF_ONESHOT; | |
991 | ||
992 | error = devm_request_threaded_irq(&client->dev, client->irq, | |
993 | NULL, edt_ft5x06_ts_isr, irq_flags, | |
dac90dc2 | 994 | client->name, tsdata); |
43c4d13e SB |
995 | if (error) { |
996 | dev_err(&client->dev, "Unable to request touchscreen IRQ.\n"); | |
02300bd6 | 997 | return error; |
43c4d13e SB |
998 | } |
999 | ||
1000 | error = sysfs_create_group(&client->dev.kobj, &edt_ft5x06_attr_group); | |
1001 | if (error) | |
02300bd6 | 1002 | return error; |
43c4d13e SB |
1003 | |
1004 | error = input_register_device(input); | |
dac90dc2 LW |
1005 | if (error) |
1006 | goto err_remove_attrs; | |
43c4d13e SB |
1007 | |
1008 | edt_ft5x06_ts_prepare_debugfs(tsdata, dev_driver_string(&client->dev)); | |
1009 | device_init_wakeup(&client->dev, 1); | |
1010 | ||
1011 | dev_dbg(&client->dev, | |
dac90dc2 | 1012 | "EDT FT5x06 initialized: IRQ %d, WAKE pin %d, Reset pin %d.\n", |
8b58cc36 FCJ |
1013 | client->irq, |
1014 | tsdata->wake_gpio ? desc_to_gpio(tsdata->wake_gpio) : -1, | |
1015 | tsdata->reset_gpio ? desc_to_gpio(tsdata->reset_gpio) : -1); | |
43c4d13e SB |
1016 | |
1017 | return 0; | |
dac90dc2 LW |
1018 | |
1019 | err_remove_attrs: | |
1020 | sysfs_remove_group(&client->dev.kobj, &edt_ft5x06_attr_group); | |
1021 | return error; | |
43c4d13e SB |
1022 | } |
1023 | ||
e2619cf7 | 1024 | static int edt_ft5x06_ts_remove(struct i2c_client *client) |
43c4d13e | 1025 | { |
43c4d13e SB |
1026 | struct edt_ft5x06_ts_data *tsdata = i2c_get_clientdata(client); |
1027 | ||
1028 | edt_ft5x06_ts_teardown_debugfs(tsdata); | |
1029 | sysfs_remove_group(&client->dev.kobj, &edt_ft5x06_attr_group); | |
1030 | ||
43c4d13e SB |
1031 | return 0; |
1032 | } | |
1033 | ||
02b6a58b | 1034 | static int __maybe_unused edt_ft5x06_ts_suspend(struct device *dev) |
43c4d13e SB |
1035 | { |
1036 | struct i2c_client *client = to_i2c_client(dev); | |
1037 | ||
1038 | if (device_may_wakeup(dev)) | |
1039 | enable_irq_wake(client->irq); | |
1040 | ||
1041 | return 0; | |
1042 | } | |
1043 | ||
02b6a58b | 1044 | static int __maybe_unused edt_ft5x06_ts_resume(struct device *dev) |
43c4d13e SB |
1045 | { |
1046 | struct i2c_client *client = to_i2c_client(dev); | |
1047 | ||
1048 | if (device_may_wakeup(dev)) | |
1049 | disable_irq_wake(client->irq); | |
1050 | ||
1051 | return 0; | |
1052 | } | |
43c4d13e SB |
1053 | |
1054 | static SIMPLE_DEV_PM_OPS(edt_ft5x06_ts_pm_ops, | |
1055 | edt_ft5x06_ts_suspend, edt_ft5x06_ts_resume); | |
1056 | ||
b1d2a3ec FCJ |
1057 | static const struct edt_i2c_chip_data edt_ft5x06_data = { |
1058 | .max_support_points = 5, | |
1059 | }; | |
1060 | ||
af33e0ad FCJ |
1061 | static const struct edt_i2c_chip_data edt_ft5506_data = { |
1062 | .max_support_points = 10, | |
1063 | }; | |
1064 | ||
43c4d13e | 1065 | static const struct i2c_device_id edt_ft5x06_ts_id[] = { |
b1d2a3ec | 1066 | { .name = "edt-ft5x06", .driver_data = (long)&edt_ft5x06_data }, |
af33e0ad | 1067 | { .name = "edt-ft5506", .driver_data = (long)&edt_ft5506_data }, |
1730d814 | 1068 | { /* sentinel */ } |
43c4d13e SB |
1069 | }; |
1070 | MODULE_DEVICE_TABLE(i2c, edt_ft5x06_ts_id); | |
1071 | ||
dac90dc2 LW |
1072 | #ifdef CONFIG_OF |
1073 | static const struct of_device_id edt_ft5x06_of_match[] = { | |
b1d2a3ec FCJ |
1074 | { .compatible = "edt,edt-ft5206", .data = &edt_ft5x06_data }, |
1075 | { .compatible = "edt,edt-ft5306", .data = &edt_ft5x06_data }, | |
1076 | { .compatible = "edt,edt-ft5406", .data = &edt_ft5x06_data }, | |
af33e0ad | 1077 | { .compatible = "edt,edt-ft5506", .data = &edt_ft5506_data }, |
dac90dc2 LW |
1078 | { /* sentinel */ } |
1079 | }; | |
1080 | MODULE_DEVICE_TABLE(of, edt_ft5x06_of_match); | |
1081 | #endif | |
1082 | ||
43c4d13e SB |
1083 | static struct i2c_driver edt_ft5x06_ts_driver = { |
1084 | .driver = { | |
43c4d13e | 1085 | .name = "edt_ft5x06", |
dac90dc2 | 1086 | .of_match_table = of_match_ptr(edt_ft5x06_of_match), |
43c4d13e SB |
1087 | .pm = &edt_ft5x06_ts_pm_ops, |
1088 | }, | |
1089 | .id_table = edt_ft5x06_ts_id, | |
1090 | .probe = edt_ft5x06_ts_probe, | |
1cb0aa88 | 1091 | .remove = edt_ft5x06_ts_remove, |
43c4d13e SB |
1092 | }; |
1093 | ||
1094 | module_i2c_driver(edt_ft5x06_ts_driver); | |
1095 | ||
1096 | MODULE_AUTHOR("Simon Budig <simon.budig@kernelconcepts.de>"); | |
1097 | MODULE_DESCRIPTION("EDT FT5x06 I2C Touchscreen Driver"); | |
1098 | MODULE_LICENSE("GPL"); |