]>
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 | |
0eeecf60 | 70 | #define EDT_RAW_DATA_DELAY 1000 /* usec */ |
43c4d13e | 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; | |
ad368eb2 | 89 | struct touchscreen_properties prop; |
43c4d13e SB |
90 | u16 num_x; |
91 | u16 num_y; | |
92 | ||
13c23cd1 FCJ |
93 | struct gpio_desc *reset_gpio; |
94 | struct gpio_desc *wake_gpio; | |
dac90dc2 | 95 | |
43c4d13e SB |
96 | #if defined(CONFIG_DEBUG_FS) |
97 | struct dentry *debug_dir; | |
98 | u8 *raw_buffer; | |
99 | size_t raw_bufsize; | |
100 | #endif | |
101 | ||
102 | struct mutex mutex; | |
103 | bool factory_mode; | |
104 | int threshold; | |
105 | int gain; | |
106 | int offset; | |
107 | int report_rate; | |
b1d2a3ec | 108 | int max_support_points; |
43c4d13e SB |
109 | |
110 | char name[EDT_NAME_LEN]; | |
fd335ab0 LW |
111 | |
112 | struct edt_reg_addr reg_addr; | |
113 | enum edt_ver version; | |
43c4d13e SB |
114 | }; |
115 | ||
b1d2a3ec FCJ |
116 | struct edt_i2c_chip_data { |
117 | int max_support_points; | |
118 | }; | |
119 | ||
43c4d13e SB |
120 | static int edt_ft5x06_ts_readwrite(struct i2c_client *client, |
121 | u16 wr_len, u8 *wr_buf, | |
122 | u16 rd_len, u8 *rd_buf) | |
123 | { | |
124 | struct i2c_msg wrmsg[2]; | |
125 | int i = 0; | |
126 | int ret; | |
127 | ||
128 | if (wr_len) { | |
129 | wrmsg[i].addr = client->addr; | |
130 | wrmsg[i].flags = 0; | |
131 | wrmsg[i].len = wr_len; | |
132 | wrmsg[i].buf = wr_buf; | |
133 | i++; | |
134 | } | |
135 | if (rd_len) { | |
136 | wrmsg[i].addr = client->addr; | |
137 | wrmsg[i].flags = I2C_M_RD; | |
138 | wrmsg[i].len = rd_len; | |
139 | wrmsg[i].buf = rd_buf; | |
140 | i++; | |
141 | } | |
142 | ||
143 | ret = i2c_transfer(client->adapter, wrmsg, i); | |
144 | if (ret < 0) | |
145 | return ret; | |
146 | if (ret != i) | |
147 | return -EIO; | |
148 | ||
149 | return 0; | |
150 | } | |
151 | ||
152 | static bool edt_ft5x06_ts_check_crc(struct edt_ft5x06_ts_data *tsdata, | |
153 | u8 *buf, int buflen) | |
154 | { | |
155 | int i; | |
156 | u8 crc = 0; | |
157 | ||
158 | for (i = 0; i < buflen - 1; i++) | |
159 | crc ^= buf[i]; | |
160 | ||
161 | if (crc != buf[buflen-1]) { | |
162 | dev_err_ratelimited(&tsdata->client->dev, | |
163 | "crc error: 0x%02x expected, got 0x%02x\n", | |
164 | crc, buf[buflen-1]); | |
165 | return false; | |
166 | } | |
167 | ||
168 | return true; | |
169 | } | |
170 | ||
171 | static irqreturn_t edt_ft5x06_ts_isr(int irq, void *dev_id) | |
172 | { | |
173 | struct edt_ft5x06_ts_data *tsdata = dev_id; | |
174 | struct device *dev = &tsdata->client->dev; | |
fd335ab0 | 175 | u8 cmd; |
9378c025 | 176 | u8 rdbuf[63]; |
43c4d13e | 177 | int i, type, x, y, id; |
c789f1fb | 178 | int offset, tplen, datalen, crclen; |
43c4d13e SB |
179 | int error; |
180 | ||
fd335ab0 LW |
181 | switch (tsdata->version) { |
182 | case M06: | |
183 | cmd = 0xf9; /* tell the controller to send touch data */ | |
184 | offset = 5; /* where the actual touch data starts */ | |
185 | tplen = 4; /* data comes in so called frames */ | |
c789f1fb | 186 | crclen = 1; /* length of the crc data */ |
fd335ab0 LW |
187 | break; |
188 | ||
189 | case M09: | |
9378c025 FCJ |
190 | cmd = 0x0; |
191 | offset = 3; | |
fd335ab0 | 192 | tplen = 6; |
c789f1fb | 193 | crclen = 0; |
fd335ab0 LW |
194 | break; |
195 | ||
196 | default: | |
197 | goto out; | |
198 | } | |
199 | ||
43c4d13e | 200 | memset(rdbuf, 0, sizeof(rdbuf)); |
b1d2a3ec | 201 | datalen = tplen * tsdata->max_support_points + offset + crclen; |
43c4d13e SB |
202 | |
203 | error = edt_ft5x06_ts_readwrite(tsdata->client, | |
204 | sizeof(cmd), &cmd, | |
fd335ab0 | 205 | datalen, rdbuf); |
43c4d13e SB |
206 | if (error) { |
207 | dev_err_ratelimited(dev, "Unable to fetch data, error: %d\n", | |
208 | error); | |
209 | goto out; | |
210 | } | |
211 | ||
fd335ab0 LW |
212 | /* M09 does not send header or CRC */ |
213 | if (tsdata->version == M06) { | |
214 | if (rdbuf[0] != 0xaa || rdbuf[1] != 0xaa || | |
215 | rdbuf[2] != datalen) { | |
216 | dev_err_ratelimited(dev, | |
217 | "Unexpected header: %02x%02x%02x!\n", | |
218 | rdbuf[0], rdbuf[1], rdbuf[2]); | |
219 | goto out; | |
220 | } | |
43c4d13e | 221 | |
fd335ab0 LW |
222 | if (!edt_ft5x06_ts_check_crc(tsdata, rdbuf, datalen)) |
223 | goto out; | |
224 | } | |
43c4d13e | 225 | |
b1d2a3ec | 226 | for (i = 0; i < tsdata->max_support_points; i++) { |
fd335ab0 | 227 | u8 *buf = &rdbuf[i * tplen + offset]; |
43c4d13e SB |
228 | bool down; |
229 | ||
230 | type = buf[0] >> 6; | |
231 | /* ignore Reserved events */ | |
232 | if (type == TOUCH_EVENT_RESERVED) | |
233 | continue; | |
234 | ||
fd335ab0 LW |
235 | /* M06 sometimes sends bogus coordinates in TOUCH_DOWN */ |
236 | if (tsdata->version == M06 && type == TOUCH_EVENT_DOWN) | |
ee3e946e LW |
237 | continue; |
238 | ||
43c4d13e SB |
239 | x = ((buf[0] << 8) | buf[1]) & 0x0fff; |
240 | y = ((buf[2] << 8) | buf[3]) & 0x0fff; | |
241 | id = (buf[2] >> 4) & 0x0f; | |
1730d814 | 242 | down = type != TOUCH_EVENT_UP; |
43c4d13e SB |
243 | |
244 | input_mt_slot(tsdata->input, id); | |
245 | input_mt_report_slot_state(tsdata->input, MT_TOOL_FINGER, down); | |
246 | ||
247 | if (!down) | |
248 | continue; | |
249 | ||
ad368eb2 HG |
250 | touchscreen_report_pos(tsdata->input, &tsdata->prop, x, y, |
251 | true); | |
43c4d13e SB |
252 | } |
253 | ||
254 | input_mt_report_pointer_emulation(tsdata->input, true); | |
255 | input_sync(tsdata->input); | |
256 | ||
257 | out: | |
258 | return IRQ_HANDLED; | |
259 | } | |
260 | ||
261 | static int edt_ft5x06_register_write(struct edt_ft5x06_ts_data *tsdata, | |
262 | u8 addr, u8 value) | |
263 | { | |
264 | u8 wrbuf[4]; | |
265 | ||
fd335ab0 LW |
266 | switch (tsdata->version) { |
267 | case M06: | |
268 | wrbuf[0] = tsdata->factory_mode ? 0xf3 : 0xfc; | |
269 | wrbuf[1] = tsdata->factory_mode ? addr & 0x7f : addr & 0x3f; | |
fd335ab0 LW |
270 | wrbuf[2] = value; |
271 | wrbuf[3] = wrbuf[0] ^ wrbuf[1] ^ wrbuf[2]; | |
272 | return edt_ft5x06_ts_readwrite(tsdata->client, 4, | |
273 | wrbuf, 0, NULL); | |
274 | case M09: | |
275 | wrbuf[0] = addr; | |
276 | wrbuf[1] = value; | |
277 | ||
cc071aca | 278 | return edt_ft5x06_ts_readwrite(tsdata->client, 2, |
fd335ab0 LW |
279 | wrbuf, 0, NULL); |
280 | ||
281 | default: | |
282 | return -EINVAL; | |
283 | } | |
43c4d13e SB |
284 | } |
285 | ||
286 | static int edt_ft5x06_register_read(struct edt_ft5x06_ts_data *tsdata, | |
287 | u8 addr) | |
288 | { | |
289 | u8 wrbuf[2], rdbuf[2]; | |
290 | int error; | |
291 | ||
fd335ab0 LW |
292 | switch (tsdata->version) { |
293 | case M06: | |
294 | wrbuf[0] = tsdata->factory_mode ? 0xf3 : 0xfc; | |
295 | wrbuf[1] = tsdata->factory_mode ? addr & 0x7f : addr & 0x3f; | |
296 | wrbuf[1] |= tsdata->factory_mode ? 0x80 : 0x40; | |
43c4d13e | 297 | |
e2c3ecf0 DC |
298 | error = edt_ft5x06_ts_readwrite(tsdata->client, 2, wrbuf, 2, |
299 | rdbuf); | |
300 | if (error) | |
301 | return error; | |
43c4d13e | 302 | |
fd335ab0 LW |
303 | if ((wrbuf[0] ^ wrbuf[1] ^ rdbuf[0]) != rdbuf[1]) { |
304 | dev_err(&tsdata->client->dev, | |
305 | "crc error: 0x%02x expected, got 0x%02x\n", | |
306 | wrbuf[0] ^ wrbuf[1] ^ rdbuf[0], | |
307 | rdbuf[1]); | |
308 | return -EIO; | |
309 | } | |
310 | break; | |
311 | ||
312 | case M09: | |
313 | wrbuf[0] = addr; | |
314 | error = edt_ft5x06_ts_readwrite(tsdata->client, 1, | |
315 | wrbuf, 1, rdbuf); | |
316 | if (error) | |
317 | return error; | |
318 | break; | |
319 | ||
320 | default: | |
321 | return -EINVAL; | |
43c4d13e SB |
322 | } |
323 | ||
324 | return rdbuf[0]; | |
325 | } | |
326 | ||
327 | struct edt_ft5x06_attribute { | |
328 | struct device_attribute dattr; | |
329 | size_t field_offset; | |
330 | u8 limit_low; | |
331 | u8 limit_high; | |
fd335ab0 LW |
332 | u8 addr_m06; |
333 | u8 addr_m09; | |
43c4d13e SB |
334 | }; |
335 | ||
fd335ab0 LW |
336 | #define EDT_ATTR(_field, _mode, _addr_m06, _addr_m09, \ |
337 | _limit_low, _limit_high) \ | |
43c4d13e SB |
338 | struct edt_ft5x06_attribute edt_ft5x06_attr_##_field = { \ |
339 | .dattr = __ATTR(_field, _mode, \ | |
340 | edt_ft5x06_setting_show, \ | |
341 | edt_ft5x06_setting_store), \ | |
fd335ab0 LW |
342 | .field_offset = offsetof(struct edt_ft5x06_ts_data, _field), \ |
343 | .addr_m06 = _addr_m06, \ | |
344 | .addr_m09 = _addr_m09, \ | |
43c4d13e SB |
345 | .limit_low = _limit_low, \ |
346 | .limit_high = _limit_high, \ | |
43c4d13e SB |
347 | } |
348 | ||
349 | static ssize_t edt_ft5x06_setting_show(struct device *dev, | |
350 | struct device_attribute *dattr, | |
351 | char *buf) | |
352 | { | |
353 | struct i2c_client *client = to_i2c_client(dev); | |
354 | struct edt_ft5x06_ts_data *tsdata = i2c_get_clientdata(client); | |
355 | struct edt_ft5x06_attribute *attr = | |
356 | container_of(dattr, struct edt_ft5x06_attribute, dattr); | |
1730d814 | 357 | u8 *field = (u8 *)tsdata + attr->field_offset; |
43c4d13e SB |
358 | int val; |
359 | size_t count = 0; | |
360 | int error = 0; | |
fd335ab0 | 361 | u8 addr; |
43c4d13e SB |
362 | |
363 | mutex_lock(&tsdata->mutex); | |
364 | ||
365 | if (tsdata->factory_mode) { | |
366 | error = -EIO; | |
367 | goto out; | |
368 | } | |
369 | ||
fd335ab0 LW |
370 | switch (tsdata->version) { |
371 | case M06: | |
372 | addr = attr->addr_m06; | |
373 | break; | |
374 | ||
375 | case M09: | |
376 | addr = attr->addr_m09; | |
377 | break; | |
378 | ||
379 | default: | |
380 | error = -ENODEV; | |
43c4d13e SB |
381 | goto out; |
382 | } | |
383 | ||
fd335ab0 LW |
384 | if (addr != NO_REGISTER) { |
385 | val = edt_ft5x06_register_read(tsdata, addr); | |
386 | if (val < 0) { | |
387 | error = val; | |
388 | dev_err(&tsdata->client->dev, | |
389 | "Failed to fetch attribute %s, error %d\n", | |
390 | dattr->attr.name, error); | |
391 | goto out; | |
392 | } | |
393 | } else { | |
394 | val = *field; | |
395 | } | |
396 | ||
43c4d13e SB |
397 | if (val != *field) { |
398 | dev_warn(&tsdata->client->dev, | |
399 | "%s: read (%d) and stored value (%d) differ\n", | |
400 | dattr->attr.name, val, *field); | |
401 | *field = val; | |
402 | } | |
403 | ||
404 | count = scnprintf(buf, PAGE_SIZE, "%d\n", val); | |
405 | out: | |
406 | mutex_unlock(&tsdata->mutex); | |
407 | return error ?: count; | |
408 | } | |
409 | ||
410 | static ssize_t edt_ft5x06_setting_store(struct device *dev, | |
411 | struct device_attribute *dattr, | |
412 | const char *buf, size_t count) | |
413 | { | |
414 | struct i2c_client *client = to_i2c_client(dev); | |
415 | struct edt_ft5x06_ts_data *tsdata = i2c_get_clientdata(client); | |
416 | struct edt_ft5x06_attribute *attr = | |
417 | container_of(dattr, struct edt_ft5x06_attribute, dattr); | |
1730d814 | 418 | u8 *field = (u8 *)tsdata + attr->field_offset; |
43c4d13e SB |
419 | unsigned int val; |
420 | int error; | |
fd335ab0 | 421 | u8 addr; |
43c4d13e SB |
422 | |
423 | mutex_lock(&tsdata->mutex); | |
424 | ||
425 | if (tsdata->factory_mode) { | |
426 | error = -EIO; | |
427 | goto out; | |
428 | } | |
429 | ||
430 | error = kstrtouint(buf, 0, &val); | |
431 | if (error) | |
432 | goto out; | |
433 | ||
434 | if (val < attr->limit_low || val > attr->limit_high) { | |
435 | error = -ERANGE; | |
436 | goto out; | |
437 | } | |
438 | ||
fd335ab0 LW |
439 | switch (tsdata->version) { |
440 | case M06: | |
441 | addr = attr->addr_m06; | |
442 | break; | |
443 | ||
444 | case M09: | |
445 | addr = attr->addr_m09; | |
446 | break; | |
447 | ||
448 | default: | |
449 | error = -ENODEV; | |
43c4d13e SB |
450 | goto out; |
451 | } | |
452 | ||
fd335ab0 LW |
453 | if (addr != NO_REGISTER) { |
454 | error = edt_ft5x06_register_write(tsdata, addr, val); | |
455 | if (error) { | |
456 | dev_err(&tsdata->client->dev, | |
457 | "Failed to update attribute %s, error: %d\n", | |
458 | dattr->attr.name, error); | |
459 | goto out; | |
460 | } | |
461 | } | |
43c4d13e SB |
462 | *field = val; |
463 | ||
464 | out: | |
465 | mutex_unlock(&tsdata->mutex); | |
466 | return error ?: count; | |
467 | } | |
468 | ||
fd335ab0 LW |
469 | static EDT_ATTR(gain, S_IWUSR | S_IRUGO, WORK_REGISTER_GAIN, |
470 | M09_REGISTER_GAIN, 0, 31); | |
471 | static EDT_ATTR(offset, S_IWUSR | S_IRUGO, WORK_REGISTER_OFFSET, | |
472 | M09_REGISTER_OFFSET, 0, 31); | |
473 | static EDT_ATTR(threshold, S_IWUSR | S_IRUGO, WORK_REGISTER_THRESHOLD, | |
aa3d4409 | 474 | M09_REGISTER_THRESHOLD, 0, 80); |
fd335ab0 LW |
475 | static EDT_ATTR(report_rate, S_IWUSR | S_IRUGO, WORK_REGISTER_REPORT_RATE, |
476 | NO_REGISTER, 3, 14); | |
43c4d13e SB |
477 | |
478 | static struct attribute *edt_ft5x06_attrs[] = { | |
479 | &edt_ft5x06_attr_gain.dattr.attr, | |
480 | &edt_ft5x06_attr_offset.dattr.attr, | |
481 | &edt_ft5x06_attr_threshold.dattr.attr, | |
482 | &edt_ft5x06_attr_report_rate.dattr.attr, | |
483 | NULL | |
484 | }; | |
485 | ||
486 | static const struct attribute_group edt_ft5x06_attr_group = { | |
487 | .attrs = edt_ft5x06_attrs, | |
488 | }; | |
489 | ||
490 | #ifdef CONFIG_DEBUG_FS | |
491 | static int edt_ft5x06_factory_mode(struct edt_ft5x06_ts_data *tsdata) | |
492 | { | |
493 | struct i2c_client *client = tsdata->client; | |
494 | int retries = EDT_SWITCH_MODE_RETRIES; | |
495 | int ret; | |
496 | int error; | |
497 | ||
498 | disable_irq(client->irq); | |
499 | ||
500 | if (!tsdata->raw_buffer) { | |
501 | tsdata->raw_bufsize = tsdata->num_x * tsdata->num_y * | |
502 | sizeof(u16); | |
503 | tsdata->raw_buffer = kzalloc(tsdata->raw_bufsize, GFP_KERNEL); | |
504 | if (!tsdata->raw_buffer) { | |
505 | error = -ENOMEM; | |
506 | goto err_out; | |
507 | } | |
508 | } | |
509 | ||
510 | /* mode register is 0x3c when in the work mode */ | |
fd335ab0 LW |
511 | if (tsdata->version == M09) |
512 | goto m09_out; | |
513 | ||
43c4d13e SB |
514 | error = edt_ft5x06_register_write(tsdata, WORK_REGISTER_OPMODE, 0x03); |
515 | if (error) { | |
516 | dev_err(&client->dev, | |
517 | "failed to switch to factory mode, error %d\n", error); | |
518 | goto err_out; | |
519 | } | |
520 | ||
521 | tsdata->factory_mode = true; | |
522 | do { | |
523 | mdelay(EDT_SWITCH_MODE_DELAY); | |
524 | /* mode register is 0x01 when in factory mode */ | |
525 | ret = edt_ft5x06_register_read(tsdata, FACTORY_REGISTER_OPMODE); | |
526 | if (ret == 0x03) | |
527 | break; | |
528 | } while (--retries > 0); | |
529 | ||
530 | if (retries == 0) { | |
531 | dev_err(&client->dev, "not in factory mode after %dms.\n", | |
532 | EDT_SWITCH_MODE_RETRIES * EDT_SWITCH_MODE_DELAY); | |
533 | error = -EIO; | |
534 | goto err_out; | |
535 | } | |
536 | ||
537 | return 0; | |
538 | ||
539 | err_out: | |
540 | kfree(tsdata->raw_buffer); | |
541 | tsdata->raw_buffer = NULL; | |
542 | tsdata->factory_mode = false; | |
543 | enable_irq(client->irq); | |
544 | ||
545 | return error; | |
fd335ab0 LW |
546 | |
547 | m09_out: | |
548 | dev_err(&client->dev, "No factory mode support for M09\n"); | |
549 | return -EINVAL; | |
550 | ||
43c4d13e SB |
551 | } |
552 | ||
553 | static int edt_ft5x06_work_mode(struct edt_ft5x06_ts_data *tsdata) | |
554 | { | |
555 | struct i2c_client *client = tsdata->client; | |
556 | int retries = EDT_SWITCH_MODE_RETRIES; | |
fd335ab0 | 557 | struct edt_reg_addr *reg_addr = &tsdata->reg_addr; |
43c4d13e SB |
558 | int ret; |
559 | int error; | |
560 | ||
561 | /* mode register is 0x01 when in the factory mode */ | |
562 | error = edt_ft5x06_register_write(tsdata, FACTORY_REGISTER_OPMODE, 0x1); | |
563 | if (error) { | |
564 | dev_err(&client->dev, | |
565 | "failed to switch to work mode, error: %d\n", error); | |
566 | return error; | |
567 | } | |
568 | ||
569 | tsdata->factory_mode = false; | |
570 | ||
571 | do { | |
572 | mdelay(EDT_SWITCH_MODE_DELAY); | |
573 | /* mode register is 0x01 when in factory mode */ | |
574 | ret = edt_ft5x06_register_read(tsdata, WORK_REGISTER_OPMODE); | |
575 | if (ret == 0x01) | |
576 | break; | |
577 | } while (--retries > 0); | |
578 | ||
579 | if (retries == 0) { | |
580 | dev_err(&client->dev, "not in work mode after %dms.\n", | |
581 | EDT_SWITCH_MODE_RETRIES * EDT_SWITCH_MODE_DELAY); | |
582 | tsdata->factory_mode = true; | |
583 | return -EIO; | |
584 | } | |
585 | ||
8efcc503 | 586 | kfree(tsdata->raw_buffer); |
43c4d13e SB |
587 | tsdata->raw_buffer = NULL; |
588 | ||
589 | /* restore parameters */ | |
fd335ab0 | 590 | edt_ft5x06_register_write(tsdata, reg_addr->reg_threshold, |
43c4d13e | 591 | tsdata->threshold); |
fd335ab0 | 592 | edt_ft5x06_register_write(tsdata, reg_addr->reg_gain, |
43c4d13e | 593 | tsdata->gain); |
fd335ab0 | 594 | edt_ft5x06_register_write(tsdata, reg_addr->reg_offset, |
43c4d13e | 595 | tsdata->offset); |
fd335ab0 LW |
596 | if (reg_addr->reg_report_rate) |
597 | edt_ft5x06_register_write(tsdata, reg_addr->reg_report_rate, | |
43c4d13e SB |
598 | tsdata->report_rate); |
599 | ||
600 | enable_irq(client->irq); | |
601 | ||
602 | return 0; | |
603 | } | |
604 | ||
605 | static int edt_ft5x06_debugfs_mode_get(void *data, u64 *mode) | |
606 | { | |
607 | struct edt_ft5x06_ts_data *tsdata = data; | |
608 | ||
609 | *mode = tsdata->factory_mode; | |
610 | ||
611 | return 0; | |
612 | }; | |
613 | ||
614 | static int edt_ft5x06_debugfs_mode_set(void *data, u64 mode) | |
615 | { | |
616 | struct edt_ft5x06_ts_data *tsdata = data; | |
617 | int retval = 0; | |
618 | ||
619 | if (mode > 1) | |
620 | return -ERANGE; | |
621 | ||
622 | mutex_lock(&tsdata->mutex); | |
623 | ||
624 | if (mode != tsdata->factory_mode) { | |
625 | retval = mode ? edt_ft5x06_factory_mode(tsdata) : | |
1730d814 | 626 | edt_ft5x06_work_mode(tsdata); |
43c4d13e SB |
627 | } |
628 | ||
629 | mutex_unlock(&tsdata->mutex); | |
630 | ||
631 | return retval; | |
632 | }; | |
633 | ||
634 | DEFINE_SIMPLE_ATTRIBUTE(debugfs_mode_fops, edt_ft5x06_debugfs_mode_get, | |
635 | edt_ft5x06_debugfs_mode_set, "%llu\n"); | |
636 | ||
43c4d13e SB |
637 | static ssize_t edt_ft5x06_debugfs_raw_data_read(struct file *file, |
638 | char __user *buf, size_t count, loff_t *off) | |
639 | { | |
640 | struct edt_ft5x06_ts_data *tsdata = file->private_data; | |
641 | struct i2c_client *client = tsdata->client; | |
642 | int retries = EDT_RAW_DATA_RETRIES; | |
643 | int val, i, error; | |
644 | size_t read = 0; | |
645 | int colbytes; | |
646 | char wrbuf[3]; | |
647 | u8 *rdbuf; | |
648 | ||
649 | if (*off < 0 || *off >= tsdata->raw_bufsize) | |
650 | return 0; | |
651 | ||
652 | mutex_lock(&tsdata->mutex); | |
653 | ||
654 | if (!tsdata->factory_mode || !tsdata->raw_buffer) { | |
655 | error = -EIO; | |
656 | goto out; | |
657 | } | |
658 | ||
659 | error = edt_ft5x06_register_write(tsdata, 0x08, 0x01); | |
660 | if (error) { | |
661 | dev_dbg(&client->dev, | |
662 | "failed to write 0x08 register, error %d\n", error); | |
663 | goto out; | |
664 | } | |
665 | ||
666 | do { | |
0eeecf60 | 667 | usleep_range(EDT_RAW_DATA_DELAY, EDT_RAW_DATA_DELAY + 100); |
43c4d13e SB |
668 | val = edt_ft5x06_register_read(tsdata, 0x08); |
669 | if (val < 1) | |
670 | break; | |
671 | } while (--retries > 0); | |
672 | ||
673 | if (val < 0) { | |
674 | error = val; | |
675 | dev_dbg(&client->dev, | |
676 | "failed to read 0x08 register, error %d\n", error); | |
677 | goto out; | |
678 | } | |
679 | ||
680 | if (retries == 0) { | |
681 | dev_dbg(&client->dev, | |
682 | "timed out waiting for register to settle\n"); | |
683 | error = -ETIMEDOUT; | |
684 | goto out; | |
685 | } | |
686 | ||
687 | rdbuf = tsdata->raw_buffer; | |
688 | colbytes = tsdata->num_y * sizeof(u16); | |
689 | ||
690 | wrbuf[0] = 0xf5; | |
691 | wrbuf[1] = 0x0e; | |
692 | for (i = 0; i < tsdata->num_x; i++) { | |
693 | wrbuf[2] = i; /* column index */ | |
694 | error = edt_ft5x06_ts_readwrite(tsdata->client, | |
695 | sizeof(wrbuf), wrbuf, | |
696 | colbytes, rdbuf); | |
697 | if (error) | |
698 | goto out; | |
699 | ||
700 | rdbuf += colbytes; | |
701 | } | |
702 | ||
703 | read = min_t(size_t, count, tsdata->raw_bufsize - *off); | |
35b1da4e AL |
704 | if (copy_to_user(buf, tsdata->raw_buffer + *off, read)) { |
705 | error = -EFAULT; | |
706 | goto out; | |
707 | } | |
708 | ||
709 | *off += read; | |
43c4d13e SB |
710 | out: |
711 | mutex_unlock(&tsdata->mutex); | |
712 | return error ?: read; | |
713 | }; | |
714 | ||
43c4d13e | 715 | static const struct file_operations debugfs_raw_data_fops = { |
f6c0df6a | 716 | .open = simple_open, |
43c4d13e SB |
717 | .read = edt_ft5x06_debugfs_raw_data_read, |
718 | }; | |
719 | ||
5298cc4c | 720 | static void |
43c4d13e SB |
721 | edt_ft5x06_ts_prepare_debugfs(struct edt_ft5x06_ts_data *tsdata, |
722 | const char *debugfs_name) | |
723 | { | |
724 | tsdata->debug_dir = debugfs_create_dir(debugfs_name, NULL); | |
725 | if (!tsdata->debug_dir) | |
726 | return; | |
727 | ||
728 | debugfs_create_u16("num_x", S_IRUSR, tsdata->debug_dir, &tsdata->num_x); | |
729 | debugfs_create_u16("num_y", S_IRUSR, tsdata->debug_dir, &tsdata->num_y); | |
730 | ||
731 | debugfs_create_file("mode", S_IRUSR | S_IWUSR, | |
732 | tsdata->debug_dir, tsdata, &debugfs_mode_fops); | |
733 | debugfs_create_file("raw_data", S_IRUSR, | |
734 | tsdata->debug_dir, tsdata, &debugfs_raw_data_fops); | |
735 | } | |
736 | ||
e2619cf7 | 737 | static void |
43c4d13e SB |
738 | edt_ft5x06_ts_teardown_debugfs(struct edt_ft5x06_ts_data *tsdata) |
739 | { | |
f69c6ec2 | 740 | debugfs_remove_recursive(tsdata->debug_dir); |
a1d0fa77 | 741 | kfree(tsdata->raw_buffer); |
43c4d13e SB |
742 | } |
743 | ||
744 | #else | |
745 | ||
746 | static inline void | |
747 | edt_ft5x06_ts_prepare_debugfs(struct edt_ft5x06_ts_data *tsdata, | |
748 | const char *debugfs_name) | |
749 | { | |
750 | } | |
751 | ||
752 | static inline void | |
753 | edt_ft5x06_ts_teardown_debugfs(struct edt_ft5x06_ts_data *tsdata) | |
754 | { | |
755 | } | |
756 | ||
757 | #endif /* CONFIG_DEBUGFS */ | |
758 | ||
5298cc4c | 759 | static int edt_ft5x06_ts_identify(struct i2c_client *client, |
fd335ab0 LW |
760 | struct edt_ft5x06_ts_data *tsdata, |
761 | char *fw_version) | |
43c4d13e SB |
762 | { |
763 | u8 rdbuf[EDT_NAME_LEN]; | |
764 | char *p; | |
765 | int error; | |
fd335ab0 | 766 | char *model_name = tsdata->name; |
43c4d13e | 767 | |
fd335ab0 LW |
768 | /* see what we find if we assume it is a M06 * |
769 | * if we get less than EDT_NAME_LEN, we don't want | |
770 | * to have garbage in there | |
771 | */ | |
772 | memset(rdbuf, 0, sizeof(rdbuf)); | |
43c4d13e SB |
773 | error = edt_ft5x06_ts_readwrite(client, 1, "\xbb", |
774 | EDT_NAME_LEN - 1, rdbuf); | |
775 | if (error) | |
776 | return error; | |
777 | ||
fd335ab0 LW |
778 | /* if we find something consistent, stay with that assumption |
779 | * at least M09 won't send 3 bytes here | |
780 | */ | |
0f3ae5ba | 781 | if (!(strncasecmp(rdbuf + 1, "EP0", 3))) { |
fd335ab0 LW |
782 | tsdata->version = M06; |
783 | ||
784 | /* remove last '$' end marker */ | |
785 | rdbuf[EDT_NAME_LEN - 1] = '\0'; | |
786 | if (rdbuf[EDT_NAME_LEN - 2] == '$') | |
787 | rdbuf[EDT_NAME_LEN - 2] = '\0'; | |
788 | ||
789 | /* look for Model/Version separator */ | |
790 | p = strchr(rdbuf, '*'); | |
791 | if (p) | |
792 | *p++ = '\0'; | |
793 | strlcpy(model_name, rdbuf + 1, EDT_NAME_LEN); | |
794 | strlcpy(fw_version, p ? p : "", EDT_NAME_LEN); | |
795 | } else { | |
796 | /* since there are only two versions around (M06, M09) */ | |
797 | tsdata->version = M09; | |
798 | ||
799 | error = edt_ft5x06_ts_readwrite(client, 1, "\xA6", | |
800 | 2, rdbuf); | |
801 | if (error) | |
802 | return error; | |
43c4d13e | 803 | |
fd335ab0 | 804 | strlcpy(fw_version, rdbuf, 2); |
43c4d13e | 805 | |
fd335ab0 LW |
806 | error = edt_ft5x06_ts_readwrite(client, 1, "\xA8", |
807 | 1, rdbuf); | |
808 | if (error) | |
809 | return error; | |
810 | ||
811 | snprintf(model_name, EDT_NAME_LEN, "EP0%i%i0M09", | |
812 | rdbuf[0] >> 4, rdbuf[0] & 0x0F); | |
813 | } | |
43c4d13e SB |
814 | |
815 | return 0; | |
816 | } | |
817 | ||
2e23b7a9 | 818 | static void edt_ft5x06_ts_get_defaults(struct device *dev, |
22ddbacc | 819 | struct edt_ft5x06_ts_data *tsdata) |
dac90dc2 | 820 | { |
fd335ab0 | 821 | struct edt_reg_addr *reg_addr = &tsdata->reg_addr; |
2e23b7a9 DT |
822 | u32 val; |
823 | int error; | |
824 | ||
825 | error = device_property_read_u32(dev, "threshold", &val); | |
dc262dfa PZ |
826 | if (!error) { |
827 | edt_ft5x06_register_write(tsdata, reg_addr->reg_threshold, val); | |
828 | tsdata->threshold = val; | |
829 | } | |
2e23b7a9 DT |
830 | |
831 | error = device_property_read_u32(dev, "gain", &val); | |
dc262dfa PZ |
832 | if (!error) { |
833 | edt_ft5x06_register_write(tsdata, reg_addr->reg_gain, val); | |
834 | tsdata->gain = val; | |
835 | } | |
fd335ab0 | 836 | |
2e23b7a9 | 837 | error = device_property_read_u32(dev, "offset", &val); |
dc262dfa PZ |
838 | if (!error) { |
839 | edt_ft5x06_register_write(tsdata, reg_addr->reg_offset, val); | |
840 | tsdata->offset = val; | |
841 | } | |
dac90dc2 LW |
842 | } |
843 | ||
5298cc4c | 844 | static void |
43c4d13e SB |
845 | edt_ft5x06_ts_get_parameters(struct edt_ft5x06_ts_data *tsdata) |
846 | { | |
fd335ab0 LW |
847 | struct edt_reg_addr *reg_addr = &tsdata->reg_addr; |
848 | ||
43c4d13e | 849 | tsdata->threshold = edt_ft5x06_register_read(tsdata, |
fd335ab0 LW |
850 | reg_addr->reg_threshold); |
851 | tsdata->gain = edt_ft5x06_register_read(tsdata, reg_addr->reg_gain); | |
852 | tsdata->offset = edt_ft5x06_register_read(tsdata, reg_addr->reg_offset); | |
853 | if (reg_addr->reg_report_rate != NO_REGISTER) | |
854 | tsdata->report_rate = edt_ft5x06_register_read(tsdata, | |
855 | reg_addr->reg_report_rate); | |
856 | tsdata->num_x = edt_ft5x06_register_read(tsdata, reg_addr->reg_num_x); | |
857 | tsdata->num_y = edt_ft5x06_register_read(tsdata, reg_addr->reg_num_y); | |
858 | } | |
859 | ||
860 | static void | |
861 | edt_ft5x06_ts_set_regs(struct edt_ft5x06_ts_data *tsdata) | |
862 | { | |
863 | struct edt_reg_addr *reg_addr = &tsdata->reg_addr; | |
864 | ||
865 | switch (tsdata->version) { | |
866 | case M06: | |
867 | reg_addr->reg_threshold = WORK_REGISTER_THRESHOLD; | |
868 | reg_addr->reg_report_rate = WORK_REGISTER_REPORT_RATE; | |
869 | reg_addr->reg_gain = WORK_REGISTER_GAIN; | |
870 | reg_addr->reg_offset = WORK_REGISTER_OFFSET; | |
871 | reg_addr->reg_num_x = WORK_REGISTER_NUM_X; | |
872 | reg_addr->reg_num_y = WORK_REGISTER_NUM_Y; | |
873 | break; | |
874 | ||
875 | case M09: | |
876 | reg_addr->reg_threshold = M09_REGISTER_THRESHOLD; | |
877 | reg_addr->reg_gain = M09_REGISTER_GAIN; | |
878 | reg_addr->reg_offset = M09_REGISTER_OFFSET; | |
879 | reg_addr->reg_num_x = M09_REGISTER_NUM_X; | |
880 | reg_addr->reg_num_y = M09_REGISTER_NUM_Y; | |
881 | break; | |
882 | } | |
43c4d13e SB |
883 | } |
884 | ||
5298cc4c | 885 | static int edt_ft5x06_ts_probe(struct i2c_client *client, |
43c4d13e SB |
886 | const struct i2c_device_id *id) |
887 | { | |
b1d2a3ec | 888 | const struct edt_i2c_chip_data *chip_data; |
43c4d13e SB |
889 | struct edt_ft5x06_ts_data *tsdata; |
890 | struct input_dev *input; | |
f0bef75c | 891 | unsigned long irq_flags; |
43c4d13e SB |
892 | int error; |
893 | char fw_version[EDT_NAME_LEN]; | |
894 | ||
895 | dev_dbg(&client->dev, "probing for EDT FT5x06 I2C\n"); | |
896 | ||
dac90dc2 LW |
897 | tsdata = devm_kzalloc(&client->dev, sizeof(*tsdata), GFP_KERNEL); |
898 | if (!tsdata) { | |
899 | dev_err(&client->dev, "failed to allocate driver data.\n"); | |
900 | return -ENOMEM; | |
901 | } | |
902 | ||
b1d2a3ec FCJ |
903 | chip_data = of_device_get_match_data(&client->dev); |
904 | if (!chip_data) | |
905 | chip_data = (const struct edt_i2c_chip_data *)id->driver_data; | |
906 | if (!chip_data || !chip_data->max_support_points) { | |
907 | dev_err(&client->dev, "invalid or missing chip data\n"); | |
908 | return -EINVAL; | |
909 | } | |
910 | ||
911 | tsdata->max_support_points = chip_data->max_support_points; | |
912 | ||
13c23cd1 FCJ |
913 | tsdata->reset_gpio = devm_gpiod_get_optional(&client->dev, |
914 | "reset", GPIOD_OUT_HIGH); | |
915 | if (IS_ERR(tsdata->reset_gpio)) { | |
916 | error = PTR_ERR(tsdata->reset_gpio); | |
917 | dev_err(&client->dev, | |
918 | "Failed to request GPIO reset pin, error %d\n", error); | |
919 | return error; | |
43c4d13e SB |
920 | } |
921 | ||
13c23cd1 FCJ |
922 | tsdata->wake_gpio = devm_gpiod_get_optional(&client->dev, |
923 | "wake", GPIOD_OUT_LOW); | |
924 | if (IS_ERR(tsdata->wake_gpio)) { | |
925 | error = PTR_ERR(tsdata->wake_gpio); | |
926 | dev_err(&client->dev, | |
927 | "Failed to request GPIO wake pin, error %d\n", error); | |
43c4d13e | 928 | return error; |
13c23cd1 | 929 | } |
43c4d13e | 930 | |
13c23cd1 FCJ |
931 | if (tsdata->wake_gpio) { |
932 | usleep_range(5000, 6000); | |
933 | gpiod_set_value_cansleep(tsdata->wake_gpio, 1); | |
934 | } | |
935 | ||
936 | if (tsdata->reset_gpio) { | |
937 | usleep_range(5000, 6000); | |
938 | gpiod_set_value_cansleep(tsdata->reset_gpio, 0); | |
939 | msleep(300); | |
43c4d13e SB |
940 | } |
941 | ||
02300bd6 LW |
942 | input = devm_input_allocate_device(&client->dev); |
943 | if (!input) { | |
944 | dev_err(&client->dev, "failed to allocate input device.\n"); | |
945 | return -ENOMEM; | |
43c4d13e SB |
946 | } |
947 | ||
948 | mutex_init(&tsdata->mutex); | |
949 | tsdata->client = client; | |
950 | tsdata->input = input; | |
951 | tsdata->factory_mode = false; | |
952 | ||
fd335ab0 | 953 | error = edt_ft5x06_ts_identify(client, tsdata, fw_version); |
43c4d13e SB |
954 | if (error) { |
955 | dev_err(&client->dev, "touchscreen probe failed\n"); | |
02300bd6 | 956 | return error; |
43c4d13e SB |
957 | } |
958 | ||
fd335ab0 | 959 | edt_ft5x06_ts_set_regs(tsdata); |
2e23b7a9 | 960 | edt_ft5x06_ts_get_defaults(&client->dev, tsdata); |
43c4d13e SB |
961 | edt_ft5x06_ts_get_parameters(tsdata); |
962 | ||
963 | dev_dbg(&client->dev, | |
964 | "Model \"%s\", Rev. \"%s\", %dx%d sensors\n", | |
965 | tsdata->name, fw_version, tsdata->num_x, tsdata->num_y); | |
966 | ||
967 | input->name = tsdata->name; | |
968 | input->id.bustype = BUS_I2C; | |
969 | input->dev.parent = &client->dev; | |
970 | ||
43c4d13e SB |
971 | input_set_abs_params(input, ABS_MT_POSITION_X, |
972 | 0, tsdata->num_x * 64 - 1, 0, 0); | |
973 | input_set_abs_params(input, ABS_MT_POSITION_Y, | |
974 | 0, tsdata->num_y * 64 - 1, 0, 0); | |
2c005598 | 975 | |
ad368eb2 | 976 | touchscreen_parse_properties(input, true, &tsdata->prop); |
2c005598 | 977 | |
b1d2a3ec FCJ |
978 | error = input_mt_init_slots(input, tsdata->max_support_points, |
979 | INPUT_MT_DIRECT); | |
43c4d13e SB |
980 | if (error) { |
981 | dev_err(&client->dev, "Unable to init MT slots.\n"); | |
02300bd6 | 982 | return error; |
43c4d13e SB |
983 | } |
984 | ||
43c4d13e SB |
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 | ||
d1871654 HG |
1065 | static const struct edt_i2c_chip_data edt_ft6236_data = { |
1066 | .max_support_points = 2, | |
1067 | }; | |
1068 | ||
43c4d13e | 1069 | static const struct i2c_device_id edt_ft5x06_ts_id[] = { |
b1d2a3ec | 1070 | { .name = "edt-ft5x06", .driver_data = (long)&edt_ft5x06_data }, |
af33e0ad | 1071 | { .name = "edt-ft5506", .driver_data = (long)&edt_ft5506_data }, |
d1871654 HG |
1072 | /* Note no edt- prefix for compatibility with the ft6236.c driver */ |
1073 | { .name = "ft6236", .driver_data = (long)&edt_ft6236_data }, | |
1730d814 | 1074 | { /* sentinel */ } |
43c4d13e SB |
1075 | }; |
1076 | MODULE_DEVICE_TABLE(i2c, edt_ft5x06_ts_id); | |
1077 | ||
dac90dc2 LW |
1078 | #ifdef CONFIG_OF |
1079 | static const struct of_device_id edt_ft5x06_of_match[] = { | |
b1d2a3ec FCJ |
1080 | { .compatible = "edt,edt-ft5206", .data = &edt_ft5x06_data }, |
1081 | { .compatible = "edt,edt-ft5306", .data = &edt_ft5x06_data }, | |
1082 | { .compatible = "edt,edt-ft5406", .data = &edt_ft5x06_data }, | |
af33e0ad | 1083 | { .compatible = "edt,edt-ft5506", .data = &edt_ft5506_data }, |
d1871654 HG |
1084 | /* Note focaltech vendor prefix for compatibility with ft6236.c */ |
1085 | { .compatible = "focaltech,ft6236", .data = &edt_ft6236_data }, | |
dac90dc2 LW |
1086 | { /* sentinel */ } |
1087 | }; | |
1088 | MODULE_DEVICE_TABLE(of, edt_ft5x06_of_match); | |
1089 | #endif | |
1090 | ||
43c4d13e SB |
1091 | static struct i2c_driver edt_ft5x06_ts_driver = { |
1092 | .driver = { | |
43c4d13e | 1093 | .name = "edt_ft5x06", |
dac90dc2 | 1094 | .of_match_table = of_match_ptr(edt_ft5x06_of_match), |
43c4d13e SB |
1095 | .pm = &edt_ft5x06_ts_pm_ops, |
1096 | }, | |
1097 | .id_table = edt_ft5x06_ts_id, | |
1098 | .probe = edt_ft5x06_ts_probe, | |
1cb0aa88 | 1099 | .remove = edt_ft5x06_ts_remove, |
43c4d13e SB |
1100 | }; |
1101 | ||
1102 | module_i2c_driver(edt_ft5x06_ts_driver); | |
1103 | ||
1104 | MODULE_AUTHOR("Simon Budig <simon.budig@kernelconcepts.de>"); | |
1105 | MODULE_DESCRIPTION("EDT FT5x06 I2C Touchscreen Driver"); | |
1106 | MODULE_LICENSE("GPL"); |