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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 | 72 | enum edt_ver { |
169110c3 SB |
73 | EDT_M06, |
74 | EDT_M09, | |
aed5d0ee | 75 | EDT_M12, |
169110c3 | 76 | GENERIC_FT, |
fd335ab0 LW |
77 | }; |
78 | ||
79 | struct edt_reg_addr { | |
80 | int reg_threshold; | |
81 | int reg_report_rate; | |
82 | int reg_gain; | |
83 | int reg_offset; | |
84 | int reg_num_x; | |
85 | int reg_num_y; | |
86 | }; | |
87 | ||
43c4d13e SB |
88 | struct edt_ft5x06_ts_data { |
89 | struct i2c_client *client; | |
90 | struct input_dev *input; | |
ad368eb2 | 91 | struct touchscreen_properties prop; |
43c4d13e SB |
92 | u16 num_x; |
93 | u16 num_y; | |
94 | ||
13c23cd1 FCJ |
95 | struct gpio_desc *reset_gpio; |
96 | struct gpio_desc *wake_gpio; | |
dac90dc2 | 97 | |
43c4d13e SB |
98 | #if defined(CONFIG_DEBUG_FS) |
99 | struct dentry *debug_dir; | |
100 | u8 *raw_buffer; | |
101 | size_t raw_bufsize; | |
102 | #endif | |
103 | ||
104 | struct mutex mutex; | |
105 | bool factory_mode; | |
106 | int threshold; | |
107 | int gain; | |
108 | int offset; | |
109 | int report_rate; | |
b1d2a3ec | 110 | int max_support_points; |
43c4d13e SB |
111 | |
112 | char name[EDT_NAME_LEN]; | |
fd335ab0 LW |
113 | |
114 | struct edt_reg_addr reg_addr; | |
115 | enum edt_ver version; | |
43c4d13e SB |
116 | }; |
117 | ||
b1d2a3ec FCJ |
118 | struct edt_i2c_chip_data { |
119 | int max_support_points; | |
120 | }; | |
121 | ||
43c4d13e SB |
122 | static int edt_ft5x06_ts_readwrite(struct i2c_client *client, |
123 | u16 wr_len, u8 *wr_buf, | |
124 | u16 rd_len, u8 *rd_buf) | |
125 | { | |
126 | struct i2c_msg wrmsg[2]; | |
127 | int i = 0; | |
128 | int ret; | |
129 | ||
130 | if (wr_len) { | |
131 | wrmsg[i].addr = client->addr; | |
132 | wrmsg[i].flags = 0; | |
133 | wrmsg[i].len = wr_len; | |
134 | wrmsg[i].buf = wr_buf; | |
135 | i++; | |
136 | } | |
137 | if (rd_len) { | |
138 | wrmsg[i].addr = client->addr; | |
139 | wrmsg[i].flags = I2C_M_RD; | |
140 | wrmsg[i].len = rd_len; | |
141 | wrmsg[i].buf = rd_buf; | |
142 | i++; | |
143 | } | |
144 | ||
145 | ret = i2c_transfer(client->adapter, wrmsg, i); | |
146 | if (ret < 0) | |
147 | return ret; | |
148 | if (ret != i) | |
149 | return -EIO; | |
150 | ||
151 | return 0; | |
152 | } | |
153 | ||
154 | static bool edt_ft5x06_ts_check_crc(struct edt_ft5x06_ts_data *tsdata, | |
155 | u8 *buf, int buflen) | |
156 | { | |
157 | int i; | |
158 | u8 crc = 0; | |
159 | ||
160 | for (i = 0; i < buflen - 1; i++) | |
161 | crc ^= buf[i]; | |
162 | ||
163 | if (crc != buf[buflen-1]) { | |
164 | dev_err_ratelimited(&tsdata->client->dev, | |
165 | "crc error: 0x%02x expected, got 0x%02x\n", | |
166 | crc, buf[buflen-1]); | |
167 | return false; | |
168 | } | |
169 | ||
170 | return true; | |
171 | } | |
172 | ||
173 | static irqreturn_t edt_ft5x06_ts_isr(int irq, void *dev_id) | |
174 | { | |
175 | struct edt_ft5x06_ts_data *tsdata = dev_id; | |
176 | struct device *dev = &tsdata->client->dev; | |
fd335ab0 | 177 | u8 cmd; |
9378c025 | 178 | u8 rdbuf[63]; |
43c4d13e | 179 | int i, type, x, y, id; |
c789f1fb | 180 | int offset, tplen, datalen, crclen; |
43c4d13e SB |
181 | int error; |
182 | ||
fd335ab0 | 183 | switch (tsdata->version) { |
169110c3 | 184 | case EDT_M06: |
fd335ab0 LW |
185 | cmd = 0xf9; /* tell the controller to send touch data */ |
186 | offset = 5; /* where the actual touch data starts */ | |
187 | tplen = 4; /* data comes in so called frames */ | |
c789f1fb | 188 | crclen = 1; /* length of the crc data */ |
fd335ab0 LW |
189 | break; |
190 | ||
169110c3 | 191 | case EDT_M09: |
aed5d0ee | 192 | case EDT_M12: |
169110c3 | 193 | case GENERIC_FT: |
9378c025 FCJ |
194 | cmd = 0x0; |
195 | offset = 3; | |
fd335ab0 | 196 | tplen = 6; |
c789f1fb | 197 | crclen = 0; |
fd335ab0 LW |
198 | break; |
199 | ||
200 | default: | |
201 | goto out; | |
202 | } | |
203 | ||
43c4d13e | 204 | memset(rdbuf, 0, sizeof(rdbuf)); |
b1d2a3ec | 205 | datalen = tplen * tsdata->max_support_points + offset + crclen; |
43c4d13e SB |
206 | |
207 | error = edt_ft5x06_ts_readwrite(tsdata->client, | |
208 | sizeof(cmd), &cmd, | |
fd335ab0 | 209 | datalen, rdbuf); |
43c4d13e SB |
210 | if (error) { |
211 | dev_err_ratelimited(dev, "Unable to fetch data, error: %d\n", | |
212 | error); | |
213 | goto out; | |
214 | } | |
215 | ||
aed5d0ee | 216 | /* M09/M12 does not send header or CRC */ |
169110c3 | 217 | if (tsdata->version == EDT_M06) { |
fd335ab0 LW |
218 | if (rdbuf[0] != 0xaa || rdbuf[1] != 0xaa || |
219 | rdbuf[2] != datalen) { | |
220 | dev_err_ratelimited(dev, | |
221 | "Unexpected header: %02x%02x%02x!\n", | |
222 | rdbuf[0], rdbuf[1], rdbuf[2]); | |
223 | goto out; | |
224 | } | |
43c4d13e | 225 | |
fd335ab0 LW |
226 | if (!edt_ft5x06_ts_check_crc(tsdata, rdbuf, datalen)) |
227 | goto out; | |
228 | } | |
43c4d13e | 229 | |
b1d2a3ec | 230 | for (i = 0; i < tsdata->max_support_points; i++) { |
fd335ab0 | 231 | u8 *buf = &rdbuf[i * tplen + offset]; |
43c4d13e SB |
232 | bool down; |
233 | ||
234 | type = buf[0] >> 6; | |
235 | /* ignore Reserved events */ | |
236 | if (type == TOUCH_EVENT_RESERVED) | |
237 | continue; | |
238 | ||
fd335ab0 | 239 | /* M06 sometimes sends bogus coordinates in TOUCH_DOWN */ |
169110c3 | 240 | if (tsdata->version == EDT_M06 && type == TOUCH_EVENT_DOWN) |
ee3e946e LW |
241 | continue; |
242 | ||
43c4d13e SB |
243 | x = ((buf[0] << 8) | buf[1]) & 0x0fff; |
244 | y = ((buf[2] << 8) | buf[3]) & 0x0fff; | |
245 | id = (buf[2] >> 4) & 0x0f; | |
1730d814 | 246 | down = type != TOUCH_EVENT_UP; |
43c4d13e SB |
247 | |
248 | input_mt_slot(tsdata->input, id); | |
249 | input_mt_report_slot_state(tsdata->input, MT_TOOL_FINGER, down); | |
250 | ||
251 | if (!down) | |
252 | continue; | |
253 | ||
ad368eb2 HG |
254 | touchscreen_report_pos(tsdata->input, &tsdata->prop, x, y, |
255 | true); | |
43c4d13e SB |
256 | } |
257 | ||
258 | input_mt_report_pointer_emulation(tsdata->input, true); | |
259 | input_sync(tsdata->input); | |
260 | ||
261 | out: | |
262 | return IRQ_HANDLED; | |
263 | } | |
264 | ||
265 | static int edt_ft5x06_register_write(struct edt_ft5x06_ts_data *tsdata, | |
266 | u8 addr, u8 value) | |
267 | { | |
268 | u8 wrbuf[4]; | |
269 | ||
fd335ab0 | 270 | switch (tsdata->version) { |
169110c3 | 271 | case EDT_M06: |
fd335ab0 LW |
272 | wrbuf[0] = tsdata->factory_mode ? 0xf3 : 0xfc; |
273 | wrbuf[1] = tsdata->factory_mode ? addr & 0x7f : addr & 0x3f; | |
fd335ab0 LW |
274 | wrbuf[2] = value; |
275 | wrbuf[3] = wrbuf[0] ^ wrbuf[1] ^ wrbuf[2]; | |
276 | return edt_ft5x06_ts_readwrite(tsdata->client, 4, | |
277 | wrbuf, 0, NULL); | |
169110c3 | 278 | case EDT_M09: |
aed5d0ee | 279 | case EDT_M12: |
169110c3 | 280 | case GENERIC_FT: |
fd335ab0 LW |
281 | wrbuf[0] = addr; |
282 | wrbuf[1] = value; | |
283 | ||
cc071aca | 284 | return edt_ft5x06_ts_readwrite(tsdata->client, 2, |
fd335ab0 LW |
285 | wrbuf, 0, NULL); |
286 | ||
287 | default: | |
288 | return -EINVAL; | |
289 | } | |
43c4d13e SB |
290 | } |
291 | ||
292 | static int edt_ft5x06_register_read(struct edt_ft5x06_ts_data *tsdata, | |
293 | u8 addr) | |
294 | { | |
295 | u8 wrbuf[2], rdbuf[2]; | |
296 | int error; | |
297 | ||
fd335ab0 | 298 | switch (tsdata->version) { |
169110c3 | 299 | case EDT_M06: |
fd335ab0 LW |
300 | wrbuf[0] = tsdata->factory_mode ? 0xf3 : 0xfc; |
301 | wrbuf[1] = tsdata->factory_mode ? addr & 0x7f : addr & 0x3f; | |
302 | wrbuf[1] |= tsdata->factory_mode ? 0x80 : 0x40; | |
43c4d13e | 303 | |
e2c3ecf0 DC |
304 | error = edt_ft5x06_ts_readwrite(tsdata->client, 2, wrbuf, 2, |
305 | rdbuf); | |
306 | if (error) | |
307 | return error; | |
43c4d13e | 308 | |
fd335ab0 LW |
309 | if ((wrbuf[0] ^ wrbuf[1] ^ rdbuf[0]) != rdbuf[1]) { |
310 | dev_err(&tsdata->client->dev, | |
311 | "crc error: 0x%02x expected, got 0x%02x\n", | |
312 | wrbuf[0] ^ wrbuf[1] ^ rdbuf[0], | |
313 | rdbuf[1]); | |
314 | return -EIO; | |
315 | } | |
316 | break; | |
317 | ||
169110c3 | 318 | case EDT_M09: |
aed5d0ee | 319 | case EDT_M12: |
169110c3 | 320 | case GENERIC_FT: |
fd335ab0 LW |
321 | wrbuf[0] = addr; |
322 | error = edt_ft5x06_ts_readwrite(tsdata->client, 1, | |
323 | wrbuf, 1, rdbuf); | |
324 | if (error) | |
325 | return error; | |
326 | break; | |
327 | ||
328 | default: | |
329 | return -EINVAL; | |
43c4d13e SB |
330 | } |
331 | ||
332 | return rdbuf[0]; | |
333 | } | |
334 | ||
335 | struct edt_ft5x06_attribute { | |
336 | struct device_attribute dattr; | |
337 | size_t field_offset; | |
338 | u8 limit_low; | |
339 | u8 limit_high; | |
fd335ab0 LW |
340 | u8 addr_m06; |
341 | u8 addr_m09; | |
43c4d13e SB |
342 | }; |
343 | ||
fd335ab0 LW |
344 | #define EDT_ATTR(_field, _mode, _addr_m06, _addr_m09, \ |
345 | _limit_low, _limit_high) \ | |
43c4d13e SB |
346 | struct edt_ft5x06_attribute edt_ft5x06_attr_##_field = { \ |
347 | .dattr = __ATTR(_field, _mode, \ | |
348 | edt_ft5x06_setting_show, \ | |
349 | edt_ft5x06_setting_store), \ | |
fd335ab0 LW |
350 | .field_offset = offsetof(struct edt_ft5x06_ts_data, _field), \ |
351 | .addr_m06 = _addr_m06, \ | |
352 | .addr_m09 = _addr_m09, \ | |
43c4d13e SB |
353 | .limit_low = _limit_low, \ |
354 | .limit_high = _limit_high, \ | |
43c4d13e SB |
355 | } |
356 | ||
357 | static ssize_t edt_ft5x06_setting_show(struct device *dev, | |
358 | struct device_attribute *dattr, | |
359 | char *buf) | |
360 | { | |
361 | struct i2c_client *client = to_i2c_client(dev); | |
362 | struct edt_ft5x06_ts_data *tsdata = i2c_get_clientdata(client); | |
363 | struct edt_ft5x06_attribute *attr = | |
364 | container_of(dattr, struct edt_ft5x06_attribute, dattr); | |
1730d814 | 365 | u8 *field = (u8 *)tsdata + attr->field_offset; |
43c4d13e SB |
366 | int val; |
367 | size_t count = 0; | |
368 | int error = 0; | |
fd335ab0 | 369 | u8 addr; |
43c4d13e SB |
370 | |
371 | mutex_lock(&tsdata->mutex); | |
372 | ||
373 | if (tsdata->factory_mode) { | |
374 | error = -EIO; | |
375 | goto out; | |
376 | } | |
377 | ||
fd335ab0 | 378 | switch (tsdata->version) { |
169110c3 | 379 | case EDT_M06: |
fd335ab0 LW |
380 | addr = attr->addr_m06; |
381 | break; | |
382 | ||
169110c3 | 383 | case EDT_M09: |
aed5d0ee | 384 | case EDT_M12: |
169110c3 | 385 | case GENERIC_FT: |
fd335ab0 LW |
386 | addr = attr->addr_m09; |
387 | break; | |
388 | ||
389 | default: | |
390 | error = -ENODEV; | |
43c4d13e SB |
391 | goto out; |
392 | } | |
393 | ||
fd335ab0 LW |
394 | if (addr != NO_REGISTER) { |
395 | val = edt_ft5x06_register_read(tsdata, addr); | |
396 | if (val < 0) { | |
397 | error = val; | |
398 | dev_err(&tsdata->client->dev, | |
399 | "Failed to fetch attribute %s, error %d\n", | |
400 | dattr->attr.name, error); | |
401 | goto out; | |
402 | } | |
403 | } else { | |
404 | val = *field; | |
405 | } | |
406 | ||
43c4d13e SB |
407 | if (val != *field) { |
408 | dev_warn(&tsdata->client->dev, | |
409 | "%s: read (%d) and stored value (%d) differ\n", | |
410 | dattr->attr.name, val, *field); | |
411 | *field = val; | |
412 | } | |
413 | ||
414 | count = scnprintf(buf, PAGE_SIZE, "%d\n", val); | |
415 | out: | |
416 | mutex_unlock(&tsdata->mutex); | |
417 | return error ?: count; | |
418 | } | |
419 | ||
420 | static ssize_t edt_ft5x06_setting_store(struct device *dev, | |
421 | struct device_attribute *dattr, | |
422 | const char *buf, size_t count) | |
423 | { | |
424 | struct i2c_client *client = to_i2c_client(dev); | |
425 | struct edt_ft5x06_ts_data *tsdata = i2c_get_clientdata(client); | |
426 | struct edt_ft5x06_attribute *attr = | |
427 | container_of(dattr, struct edt_ft5x06_attribute, dattr); | |
1730d814 | 428 | u8 *field = (u8 *)tsdata + attr->field_offset; |
43c4d13e SB |
429 | unsigned int val; |
430 | int error; | |
fd335ab0 | 431 | u8 addr; |
43c4d13e SB |
432 | |
433 | mutex_lock(&tsdata->mutex); | |
434 | ||
435 | if (tsdata->factory_mode) { | |
436 | error = -EIO; | |
437 | goto out; | |
438 | } | |
439 | ||
440 | error = kstrtouint(buf, 0, &val); | |
441 | if (error) | |
442 | goto out; | |
443 | ||
444 | if (val < attr->limit_low || val > attr->limit_high) { | |
445 | error = -ERANGE; | |
446 | goto out; | |
447 | } | |
448 | ||
fd335ab0 | 449 | switch (tsdata->version) { |
169110c3 | 450 | case EDT_M06: |
fd335ab0 LW |
451 | addr = attr->addr_m06; |
452 | break; | |
453 | ||
169110c3 | 454 | case EDT_M09: |
aed5d0ee | 455 | case EDT_M12: |
169110c3 | 456 | case GENERIC_FT: |
fd335ab0 LW |
457 | addr = attr->addr_m09; |
458 | break; | |
459 | ||
460 | default: | |
461 | error = -ENODEV; | |
43c4d13e SB |
462 | goto out; |
463 | } | |
464 | ||
fd335ab0 LW |
465 | if (addr != NO_REGISTER) { |
466 | error = edt_ft5x06_register_write(tsdata, addr, val); | |
467 | if (error) { | |
468 | dev_err(&tsdata->client->dev, | |
469 | "Failed to update attribute %s, error: %d\n", | |
470 | dattr->attr.name, error); | |
471 | goto out; | |
472 | } | |
473 | } | |
43c4d13e SB |
474 | *field = val; |
475 | ||
476 | out: | |
477 | mutex_unlock(&tsdata->mutex); | |
478 | return error ?: count; | |
479 | } | |
480 | ||
aed5d0ee | 481 | /* m06, m09: range 0-31, m12: range 0-5 */ |
fd335ab0 LW |
482 | static EDT_ATTR(gain, S_IWUSR | S_IRUGO, WORK_REGISTER_GAIN, |
483 | M09_REGISTER_GAIN, 0, 31); | |
aed5d0ee | 484 | /* m06, m09: range 0-31, m12: range 0-16 */ |
fd335ab0 LW |
485 | static EDT_ATTR(offset, S_IWUSR | S_IRUGO, WORK_REGISTER_OFFSET, |
486 | M09_REGISTER_OFFSET, 0, 31); | |
aed5d0ee | 487 | /* m06: range 20 to 80, m09: range 0 to 30, m12: range 1 to 255... */ |
fd335ab0 | 488 | static EDT_ATTR(threshold, S_IWUSR | S_IRUGO, WORK_REGISTER_THRESHOLD, |
aed5d0ee SB |
489 | M09_REGISTER_THRESHOLD, 0, 255); |
490 | /* m06: range 3 to 14, m12: (0x64: 100Hz) */ | |
fd335ab0 | 491 | static EDT_ATTR(report_rate, S_IWUSR | S_IRUGO, WORK_REGISTER_REPORT_RATE, |
aed5d0ee | 492 | NO_REGISTER, 0, 255); |
43c4d13e SB |
493 | |
494 | static struct attribute *edt_ft5x06_attrs[] = { | |
495 | &edt_ft5x06_attr_gain.dattr.attr, | |
496 | &edt_ft5x06_attr_offset.dattr.attr, | |
497 | &edt_ft5x06_attr_threshold.dattr.attr, | |
498 | &edt_ft5x06_attr_report_rate.dattr.attr, | |
499 | NULL | |
500 | }; | |
501 | ||
502 | static const struct attribute_group edt_ft5x06_attr_group = { | |
503 | .attrs = edt_ft5x06_attrs, | |
504 | }; | |
505 | ||
506 | #ifdef CONFIG_DEBUG_FS | |
507 | static int edt_ft5x06_factory_mode(struct edt_ft5x06_ts_data *tsdata) | |
508 | { | |
509 | struct i2c_client *client = tsdata->client; | |
510 | int retries = EDT_SWITCH_MODE_RETRIES; | |
511 | int ret; | |
512 | int error; | |
513 | ||
514 | disable_irq(client->irq); | |
515 | ||
516 | if (!tsdata->raw_buffer) { | |
517 | tsdata->raw_bufsize = tsdata->num_x * tsdata->num_y * | |
518 | sizeof(u16); | |
519 | tsdata->raw_buffer = kzalloc(tsdata->raw_bufsize, GFP_KERNEL); | |
520 | if (!tsdata->raw_buffer) { | |
521 | error = -ENOMEM; | |
522 | goto err_out; | |
523 | } | |
524 | } | |
525 | ||
526 | /* mode register is 0x3c when in the work mode */ | |
169110c3 | 527 | if (tsdata->version != EDT_M06) |
fd335ab0 LW |
528 | goto m09_out; |
529 | ||
43c4d13e SB |
530 | error = edt_ft5x06_register_write(tsdata, WORK_REGISTER_OPMODE, 0x03); |
531 | if (error) { | |
532 | dev_err(&client->dev, | |
533 | "failed to switch to factory mode, error %d\n", error); | |
534 | goto err_out; | |
535 | } | |
536 | ||
537 | tsdata->factory_mode = true; | |
538 | do { | |
539 | mdelay(EDT_SWITCH_MODE_DELAY); | |
540 | /* mode register is 0x01 when in factory mode */ | |
541 | ret = edt_ft5x06_register_read(tsdata, FACTORY_REGISTER_OPMODE); | |
542 | if (ret == 0x03) | |
543 | break; | |
544 | } while (--retries > 0); | |
545 | ||
546 | if (retries == 0) { | |
547 | dev_err(&client->dev, "not in factory mode after %dms.\n", | |
548 | EDT_SWITCH_MODE_RETRIES * EDT_SWITCH_MODE_DELAY); | |
549 | error = -EIO; | |
550 | goto err_out; | |
551 | } | |
552 | ||
553 | return 0; | |
554 | ||
555 | err_out: | |
556 | kfree(tsdata->raw_buffer); | |
557 | tsdata->raw_buffer = NULL; | |
558 | tsdata->factory_mode = false; | |
559 | enable_irq(client->irq); | |
560 | ||
561 | return error; | |
fd335ab0 LW |
562 | |
563 | m09_out: | |
aed5d0ee | 564 | dev_err(&client->dev, "No factory mode support for M09/M12/GENERIC_FT\n"); |
fd335ab0 LW |
565 | return -EINVAL; |
566 | ||
43c4d13e SB |
567 | } |
568 | ||
569 | static int edt_ft5x06_work_mode(struct edt_ft5x06_ts_data *tsdata) | |
570 | { | |
571 | struct i2c_client *client = tsdata->client; | |
572 | int retries = EDT_SWITCH_MODE_RETRIES; | |
fd335ab0 | 573 | struct edt_reg_addr *reg_addr = &tsdata->reg_addr; |
43c4d13e SB |
574 | int ret; |
575 | int error; | |
576 | ||
577 | /* mode register is 0x01 when in the factory mode */ | |
578 | error = edt_ft5x06_register_write(tsdata, FACTORY_REGISTER_OPMODE, 0x1); | |
579 | if (error) { | |
580 | dev_err(&client->dev, | |
581 | "failed to switch to work mode, error: %d\n", error); | |
582 | return error; | |
583 | } | |
584 | ||
585 | tsdata->factory_mode = false; | |
586 | ||
587 | do { | |
588 | mdelay(EDT_SWITCH_MODE_DELAY); | |
589 | /* mode register is 0x01 when in factory mode */ | |
590 | ret = edt_ft5x06_register_read(tsdata, WORK_REGISTER_OPMODE); | |
591 | if (ret == 0x01) | |
592 | break; | |
593 | } while (--retries > 0); | |
594 | ||
595 | if (retries == 0) { | |
596 | dev_err(&client->dev, "not in work mode after %dms.\n", | |
597 | EDT_SWITCH_MODE_RETRIES * EDT_SWITCH_MODE_DELAY); | |
598 | tsdata->factory_mode = true; | |
599 | return -EIO; | |
600 | } | |
601 | ||
8efcc503 | 602 | kfree(tsdata->raw_buffer); |
43c4d13e SB |
603 | tsdata->raw_buffer = NULL; |
604 | ||
605 | /* restore parameters */ | |
fd335ab0 | 606 | edt_ft5x06_register_write(tsdata, reg_addr->reg_threshold, |
43c4d13e | 607 | tsdata->threshold); |
fd335ab0 | 608 | edt_ft5x06_register_write(tsdata, reg_addr->reg_gain, |
43c4d13e | 609 | tsdata->gain); |
fd335ab0 | 610 | edt_ft5x06_register_write(tsdata, reg_addr->reg_offset, |
43c4d13e | 611 | tsdata->offset); |
47014752 | 612 | if (reg_addr->reg_report_rate != NO_REGISTER) |
fd335ab0 | 613 | edt_ft5x06_register_write(tsdata, reg_addr->reg_report_rate, |
43c4d13e SB |
614 | tsdata->report_rate); |
615 | ||
616 | enable_irq(client->irq); | |
617 | ||
618 | return 0; | |
619 | } | |
620 | ||
621 | static int edt_ft5x06_debugfs_mode_get(void *data, u64 *mode) | |
622 | { | |
623 | struct edt_ft5x06_ts_data *tsdata = data; | |
624 | ||
625 | *mode = tsdata->factory_mode; | |
626 | ||
627 | return 0; | |
628 | }; | |
629 | ||
630 | static int edt_ft5x06_debugfs_mode_set(void *data, u64 mode) | |
631 | { | |
632 | struct edt_ft5x06_ts_data *tsdata = data; | |
633 | int retval = 0; | |
634 | ||
635 | if (mode > 1) | |
636 | return -ERANGE; | |
637 | ||
638 | mutex_lock(&tsdata->mutex); | |
639 | ||
640 | if (mode != tsdata->factory_mode) { | |
641 | retval = mode ? edt_ft5x06_factory_mode(tsdata) : | |
1730d814 | 642 | edt_ft5x06_work_mode(tsdata); |
43c4d13e SB |
643 | } |
644 | ||
645 | mutex_unlock(&tsdata->mutex); | |
646 | ||
647 | return retval; | |
648 | }; | |
649 | ||
650 | DEFINE_SIMPLE_ATTRIBUTE(debugfs_mode_fops, edt_ft5x06_debugfs_mode_get, | |
651 | edt_ft5x06_debugfs_mode_set, "%llu\n"); | |
652 | ||
43c4d13e SB |
653 | static ssize_t edt_ft5x06_debugfs_raw_data_read(struct file *file, |
654 | char __user *buf, size_t count, loff_t *off) | |
655 | { | |
656 | struct edt_ft5x06_ts_data *tsdata = file->private_data; | |
657 | struct i2c_client *client = tsdata->client; | |
658 | int retries = EDT_RAW_DATA_RETRIES; | |
659 | int val, i, error; | |
660 | size_t read = 0; | |
661 | int colbytes; | |
662 | char wrbuf[3]; | |
663 | u8 *rdbuf; | |
664 | ||
665 | if (*off < 0 || *off >= tsdata->raw_bufsize) | |
666 | return 0; | |
667 | ||
668 | mutex_lock(&tsdata->mutex); | |
669 | ||
670 | if (!tsdata->factory_mode || !tsdata->raw_buffer) { | |
671 | error = -EIO; | |
672 | goto out; | |
673 | } | |
674 | ||
675 | error = edt_ft5x06_register_write(tsdata, 0x08, 0x01); | |
676 | if (error) { | |
677 | dev_dbg(&client->dev, | |
678 | "failed to write 0x08 register, error %d\n", error); | |
679 | goto out; | |
680 | } | |
681 | ||
682 | do { | |
0eeecf60 | 683 | usleep_range(EDT_RAW_DATA_DELAY, EDT_RAW_DATA_DELAY + 100); |
43c4d13e SB |
684 | val = edt_ft5x06_register_read(tsdata, 0x08); |
685 | if (val < 1) | |
686 | break; | |
687 | } while (--retries > 0); | |
688 | ||
689 | if (val < 0) { | |
690 | error = val; | |
691 | dev_dbg(&client->dev, | |
692 | "failed to read 0x08 register, error %d\n", error); | |
693 | goto out; | |
694 | } | |
695 | ||
696 | if (retries == 0) { | |
697 | dev_dbg(&client->dev, | |
698 | "timed out waiting for register to settle\n"); | |
699 | error = -ETIMEDOUT; | |
700 | goto out; | |
701 | } | |
702 | ||
703 | rdbuf = tsdata->raw_buffer; | |
704 | colbytes = tsdata->num_y * sizeof(u16); | |
705 | ||
706 | wrbuf[0] = 0xf5; | |
707 | wrbuf[1] = 0x0e; | |
708 | for (i = 0; i < tsdata->num_x; i++) { | |
709 | wrbuf[2] = i; /* column index */ | |
710 | error = edt_ft5x06_ts_readwrite(tsdata->client, | |
711 | sizeof(wrbuf), wrbuf, | |
712 | colbytes, rdbuf); | |
713 | if (error) | |
714 | goto out; | |
715 | ||
716 | rdbuf += colbytes; | |
717 | } | |
718 | ||
719 | read = min_t(size_t, count, tsdata->raw_bufsize - *off); | |
35b1da4e AL |
720 | if (copy_to_user(buf, tsdata->raw_buffer + *off, read)) { |
721 | error = -EFAULT; | |
722 | goto out; | |
723 | } | |
724 | ||
725 | *off += read; | |
43c4d13e SB |
726 | out: |
727 | mutex_unlock(&tsdata->mutex); | |
728 | return error ?: read; | |
729 | }; | |
730 | ||
43c4d13e | 731 | static const struct file_operations debugfs_raw_data_fops = { |
f6c0df6a | 732 | .open = simple_open, |
43c4d13e SB |
733 | .read = edt_ft5x06_debugfs_raw_data_read, |
734 | }; | |
735 | ||
5298cc4c | 736 | static void |
43c4d13e SB |
737 | edt_ft5x06_ts_prepare_debugfs(struct edt_ft5x06_ts_data *tsdata, |
738 | const char *debugfs_name) | |
739 | { | |
740 | tsdata->debug_dir = debugfs_create_dir(debugfs_name, NULL); | |
741 | if (!tsdata->debug_dir) | |
742 | return; | |
743 | ||
744 | debugfs_create_u16("num_x", S_IRUSR, tsdata->debug_dir, &tsdata->num_x); | |
745 | debugfs_create_u16("num_y", S_IRUSR, tsdata->debug_dir, &tsdata->num_y); | |
746 | ||
747 | debugfs_create_file("mode", S_IRUSR | S_IWUSR, | |
748 | tsdata->debug_dir, tsdata, &debugfs_mode_fops); | |
749 | debugfs_create_file("raw_data", S_IRUSR, | |
750 | tsdata->debug_dir, tsdata, &debugfs_raw_data_fops); | |
751 | } | |
752 | ||
e2619cf7 | 753 | static void |
43c4d13e SB |
754 | edt_ft5x06_ts_teardown_debugfs(struct edt_ft5x06_ts_data *tsdata) |
755 | { | |
f69c6ec2 | 756 | debugfs_remove_recursive(tsdata->debug_dir); |
a1d0fa77 | 757 | kfree(tsdata->raw_buffer); |
43c4d13e SB |
758 | } |
759 | ||
760 | #else | |
761 | ||
762 | static inline void | |
763 | edt_ft5x06_ts_prepare_debugfs(struct edt_ft5x06_ts_data *tsdata, | |
764 | const char *debugfs_name) | |
765 | { | |
766 | } | |
767 | ||
768 | static inline void | |
769 | edt_ft5x06_ts_teardown_debugfs(struct edt_ft5x06_ts_data *tsdata) | |
770 | { | |
771 | } | |
772 | ||
773 | #endif /* CONFIG_DEBUGFS */ | |
774 | ||
5298cc4c | 775 | static int edt_ft5x06_ts_identify(struct i2c_client *client, |
fd335ab0 LW |
776 | struct edt_ft5x06_ts_data *tsdata, |
777 | char *fw_version) | |
43c4d13e SB |
778 | { |
779 | u8 rdbuf[EDT_NAME_LEN]; | |
780 | char *p; | |
781 | int error; | |
fd335ab0 | 782 | char *model_name = tsdata->name; |
43c4d13e | 783 | |
fd335ab0 LW |
784 | /* see what we find if we assume it is a M06 * |
785 | * if we get less than EDT_NAME_LEN, we don't want | |
786 | * to have garbage in there | |
787 | */ | |
788 | memset(rdbuf, 0, sizeof(rdbuf)); | |
aed5d0ee | 789 | error = edt_ft5x06_ts_readwrite(client, 1, "\xBB", |
43c4d13e SB |
790 | EDT_NAME_LEN - 1, rdbuf); |
791 | if (error) | |
792 | return error; | |
793 | ||
aed5d0ee SB |
794 | /* Probe content for something consistent. |
795 | * M06 starts with a response byte, M12 gives the data directly. | |
796 | * M09/Generic does not provide model number information. | |
fd335ab0 | 797 | */ |
aed5d0ee | 798 | if (!strncasecmp(rdbuf + 1, "EP0", 3)) { |
169110c3 | 799 | tsdata->version = EDT_M06; |
fd335ab0 LW |
800 | |
801 | /* remove last '$' end marker */ | |
802 | rdbuf[EDT_NAME_LEN - 1] = '\0'; | |
803 | if (rdbuf[EDT_NAME_LEN - 2] == '$') | |
804 | rdbuf[EDT_NAME_LEN - 2] = '\0'; | |
805 | ||
806 | /* look for Model/Version separator */ | |
807 | p = strchr(rdbuf, '*'); | |
808 | if (p) | |
809 | *p++ = '\0'; | |
810 | strlcpy(model_name, rdbuf + 1, EDT_NAME_LEN); | |
811 | strlcpy(fw_version, p ? p : "", EDT_NAME_LEN); | |
aed5d0ee SB |
812 | } else if (!strncasecmp(rdbuf, "EP0", 3)) { |
813 | tsdata->version = EDT_M12; | |
814 | ||
815 | /* remove last '$' end marker */ | |
816 | rdbuf[EDT_NAME_LEN - 2] = '\0'; | |
817 | if (rdbuf[EDT_NAME_LEN - 3] == '$') | |
818 | rdbuf[EDT_NAME_LEN - 3] = '\0'; | |
819 | ||
820 | /* look for Model/Version separator */ | |
821 | p = strchr(rdbuf, '*'); | |
822 | if (p) | |
823 | *p++ = '\0'; | |
824 | strlcpy(model_name, rdbuf, EDT_NAME_LEN); | |
825 | strlcpy(fw_version, p ? p : "", EDT_NAME_LEN); | |
fd335ab0 | 826 | } else { |
aed5d0ee | 827 | /* If it is not an EDT M06/M12 touchscreen, then the model |
169110c3 SB |
828 | * detection is a bit hairy. The different ft5x06 |
829 | * firmares around don't reliably implement the | |
830 | * identification registers. Well, we'll take a shot. | |
831 | * | |
832 | * The main difference between generic focaltec based | |
833 | * touches and EDT M09 is that we know how to retrieve | |
834 | * the max coordinates for the latter. | |
835 | */ | |
836 | tsdata->version = GENERIC_FT; | |
fd335ab0 LW |
837 | |
838 | error = edt_ft5x06_ts_readwrite(client, 1, "\xA6", | |
839 | 2, rdbuf); | |
840 | if (error) | |
841 | return error; | |
43c4d13e | 842 | |
fd335ab0 | 843 | strlcpy(fw_version, rdbuf, 2); |
43c4d13e | 844 | |
fd335ab0 LW |
845 | error = edt_ft5x06_ts_readwrite(client, 1, "\xA8", |
846 | 1, rdbuf); | |
847 | if (error) | |
848 | return error; | |
849 | ||
169110c3 SB |
850 | /* This "model identification" is not exact. Unfortunately |
851 | * not all firmwares for the ft5x06 put useful values in | |
852 | * the identification registers. | |
853 | */ | |
854 | switch (rdbuf[0]) { | |
855 | case 0x35: /* EDT EP0350M09 */ | |
856 | case 0x43: /* EDT EP0430M09 */ | |
857 | case 0x50: /* EDT EP0500M09 */ | |
858 | case 0x57: /* EDT EP0570M09 */ | |
859 | case 0x70: /* EDT EP0700M09 */ | |
860 | tsdata->version = EDT_M09; | |
861 | snprintf(model_name, EDT_NAME_LEN, "EP0%i%i0M09", | |
862 | rdbuf[0] >> 4, rdbuf[0] & 0x0F); | |
863 | break; | |
864 | case 0xa1: /* EDT EP1010ML00 */ | |
865 | tsdata->version = EDT_M09; | |
866 | snprintf(model_name, EDT_NAME_LEN, "EP%i%i0ML00", | |
867 | rdbuf[0] >> 4, rdbuf[0] & 0x0F); | |
868 | break; | |
869 | case 0x5a: /* Solomon Goldentek Display */ | |
870 | snprintf(model_name, EDT_NAME_LEN, "GKTW50SCED1R0"); | |
871 | break; | |
872 | default: | |
873 | snprintf(model_name, EDT_NAME_LEN, | |
874 | "generic ft5x06 (%02x)", | |
875 | rdbuf[0]); | |
876 | break; | |
877 | } | |
fd335ab0 | 878 | } |
43c4d13e SB |
879 | |
880 | return 0; | |
881 | } | |
882 | ||
2e23b7a9 | 883 | static void edt_ft5x06_ts_get_defaults(struct device *dev, |
22ddbacc | 884 | struct edt_ft5x06_ts_data *tsdata) |
dac90dc2 | 885 | { |
fd335ab0 | 886 | struct edt_reg_addr *reg_addr = &tsdata->reg_addr; |
2e23b7a9 DT |
887 | u32 val; |
888 | int error; | |
889 | ||
890 | error = device_property_read_u32(dev, "threshold", &val); | |
dc262dfa PZ |
891 | if (!error) { |
892 | edt_ft5x06_register_write(tsdata, reg_addr->reg_threshold, val); | |
893 | tsdata->threshold = val; | |
894 | } | |
2e23b7a9 DT |
895 | |
896 | error = device_property_read_u32(dev, "gain", &val); | |
dc262dfa PZ |
897 | if (!error) { |
898 | edt_ft5x06_register_write(tsdata, reg_addr->reg_gain, val); | |
899 | tsdata->gain = val; | |
900 | } | |
fd335ab0 | 901 | |
2e23b7a9 | 902 | error = device_property_read_u32(dev, "offset", &val); |
dc262dfa PZ |
903 | if (!error) { |
904 | edt_ft5x06_register_write(tsdata, reg_addr->reg_offset, val); | |
905 | tsdata->offset = val; | |
906 | } | |
dac90dc2 LW |
907 | } |
908 | ||
5298cc4c | 909 | static void |
43c4d13e SB |
910 | edt_ft5x06_ts_get_parameters(struct edt_ft5x06_ts_data *tsdata) |
911 | { | |
fd335ab0 LW |
912 | struct edt_reg_addr *reg_addr = &tsdata->reg_addr; |
913 | ||
43c4d13e | 914 | tsdata->threshold = edt_ft5x06_register_read(tsdata, |
fd335ab0 LW |
915 | reg_addr->reg_threshold); |
916 | tsdata->gain = edt_ft5x06_register_read(tsdata, reg_addr->reg_gain); | |
917 | tsdata->offset = edt_ft5x06_register_read(tsdata, reg_addr->reg_offset); | |
918 | if (reg_addr->reg_report_rate != NO_REGISTER) | |
919 | tsdata->report_rate = edt_ft5x06_register_read(tsdata, | |
920 | reg_addr->reg_report_rate); | |
169110c3 | 921 | if (tsdata->version == EDT_M06 || |
aed5d0ee SB |
922 | tsdata->version == EDT_M09 || |
923 | tsdata->version == EDT_M12) { | |
169110c3 SB |
924 | tsdata->num_x = edt_ft5x06_register_read(tsdata, |
925 | reg_addr->reg_num_x); | |
926 | tsdata->num_y = edt_ft5x06_register_read(tsdata, | |
927 | reg_addr->reg_num_y); | |
928 | } else { | |
929 | tsdata->num_x = -1; | |
930 | tsdata->num_y = -1; | |
931 | } | |
fd335ab0 LW |
932 | } |
933 | ||
934 | static void | |
935 | edt_ft5x06_ts_set_regs(struct edt_ft5x06_ts_data *tsdata) | |
936 | { | |
937 | struct edt_reg_addr *reg_addr = &tsdata->reg_addr; | |
938 | ||
939 | switch (tsdata->version) { | |
169110c3 | 940 | case EDT_M06: |
fd335ab0 LW |
941 | reg_addr->reg_threshold = WORK_REGISTER_THRESHOLD; |
942 | reg_addr->reg_report_rate = WORK_REGISTER_REPORT_RATE; | |
943 | reg_addr->reg_gain = WORK_REGISTER_GAIN; | |
944 | reg_addr->reg_offset = WORK_REGISTER_OFFSET; | |
945 | reg_addr->reg_num_x = WORK_REGISTER_NUM_X; | |
946 | reg_addr->reg_num_y = WORK_REGISTER_NUM_Y; | |
947 | break; | |
948 | ||
169110c3 | 949 | case EDT_M09: |
aed5d0ee | 950 | case EDT_M12: |
fd335ab0 | 951 | reg_addr->reg_threshold = M09_REGISTER_THRESHOLD; |
47014752 | 952 | reg_addr->reg_report_rate = NO_REGISTER; |
fd335ab0 LW |
953 | reg_addr->reg_gain = M09_REGISTER_GAIN; |
954 | reg_addr->reg_offset = M09_REGISTER_OFFSET; | |
955 | reg_addr->reg_num_x = M09_REGISTER_NUM_X; | |
956 | reg_addr->reg_num_y = M09_REGISTER_NUM_Y; | |
957 | break; | |
169110c3 SB |
958 | |
959 | case GENERIC_FT: | |
960 | /* this is a guesswork */ | |
961 | reg_addr->reg_threshold = M09_REGISTER_THRESHOLD; | |
962 | reg_addr->reg_gain = M09_REGISTER_GAIN; | |
963 | reg_addr->reg_offset = M09_REGISTER_OFFSET; | |
964 | break; | |
fd335ab0 | 965 | } |
43c4d13e SB |
966 | } |
967 | ||
5298cc4c | 968 | static int edt_ft5x06_ts_probe(struct i2c_client *client, |
43c4d13e SB |
969 | const struct i2c_device_id *id) |
970 | { | |
b1d2a3ec | 971 | const struct edt_i2c_chip_data *chip_data; |
43c4d13e SB |
972 | struct edt_ft5x06_ts_data *tsdata; |
973 | struct input_dev *input; | |
f0bef75c | 974 | unsigned long irq_flags; |
43c4d13e SB |
975 | int error; |
976 | char fw_version[EDT_NAME_LEN]; | |
977 | ||
978 | dev_dbg(&client->dev, "probing for EDT FT5x06 I2C\n"); | |
979 | ||
dac90dc2 LW |
980 | tsdata = devm_kzalloc(&client->dev, sizeof(*tsdata), GFP_KERNEL); |
981 | if (!tsdata) { | |
982 | dev_err(&client->dev, "failed to allocate driver data.\n"); | |
983 | return -ENOMEM; | |
984 | } | |
985 | ||
b1d2a3ec FCJ |
986 | chip_data = of_device_get_match_data(&client->dev); |
987 | if (!chip_data) | |
988 | chip_data = (const struct edt_i2c_chip_data *)id->driver_data; | |
989 | if (!chip_data || !chip_data->max_support_points) { | |
990 | dev_err(&client->dev, "invalid or missing chip data\n"); | |
991 | return -EINVAL; | |
992 | } | |
993 | ||
994 | tsdata->max_support_points = chip_data->max_support_points; | |
995 | ||
13c23cd1 FCJ |
996 | tsdata->reset_gpio = devm_gpiod_get_optional(&client->dev, |
997 | "reset", GPIOD_OUT_HIGH); | |
998 | if (IS_ERR(tsdata->reset_gpio)) { | |
999 | error = PTR_ERR(tsdata->reset_gpio); | |
1000 | dev_err(&client->dev, | |
1001 | "Failed to request GPIO reset pin, error %d\n", error); | |
1002 | return error; | |
43c4d13e SB |
1003 | } |
1004 | ||
13c23cd1 FCJ |
1005 | tsdata->wake_gpio = devm_gpiod_get_optional(&client->dev, |
1006 | "wake", GPIOD_OUT_LOW); | |
1007 | if (IS_ERR(tsdata->wake_gpio)) { | |
1008 | error = PTR_ERR(tsdata->wake_gpio); | |
1009 | dev_err(&client->dev, | |
1010 | "Failed to request GPIO wake pin, error %d\n", error); | |
43c4d13e | 1011 | return error; |
13c23cd1 | 1012 | } |
43c4d13e | 1013 | |
13c23cd1 FCJ |
1014 | if (tsdata->wake_gpio) { |
1015 | usleep_range(5000, 6000); | |
1016 | gpiod_set_value_cansleep(tsdata->wake_gpio, 1); | |
1017 | } | |
1018 | ||
1019 | if (tsdata->reset_gpio) { | |
1020 | usleep_range(5000, 6000); | |
1021 | gpiod_set_value_cansleep(tsdata->reset_gpio, 0); | |
1022 | msleep(300); | |
43c4d13e SB |
1023 | } |
1024 | ||
02300bd6 LW |
1025 | input = devm_input_allocate_device(&client->dev); |
1026 | if (!input) { | |
1027 | dev_err(&client->dev, "failed to allocate input device.\n"); | |
1028 | return -ENOMEM; | |
43c4d13e SB |
1029 | } |
1030 | ||
1031 | mutex_init(&tsdata->mutex); | |
1032 | tsdata->client = client; | |
1033 | tsdata->input = input; | |
1034 | tsdata->factory_mode = false; | |
1035 | ||
fd335ab0 | 1036 | error = edt_ft5x06_ts_identify(client, tsdata, fw_version); |
43c4d13e SB |
1037 | if (error) { |
1038 | dev_err(&client->dev, "touchscreen probe failed\n"); | |
02300bd6 | 1039 | return error; |
43c4d13e SB |
1040 | } |
1041 | ||
fd335ab0 | 1042 | edt_ft5x06_ts_set_regs(tsdata); |
2e23b7a9 | 1043 | edt_ft5x06_ts_get_defaults(&client->dev, tsdata); |
43c4d13e SB |
1044 | edt_ft5x06_ts_get_parameters(tsdata); |
1045 | ||
1046 | dev_dbg(&client->dev, | |
1047 | "Model \"%s\", Rev. \"%s\", %dx%d sensors\n", | |
1048 | tsdata->name, fw_version, tsdata->num_x, tsdata->num_y); | |
1049 | ||
1050 | input->name = tsdata->name; | |
1051 | input->id.bustype = BUS_I2C; | |
1052 | input->dev.parent = &client->dev; | |
1053 | ||
169110c3 | 1054 | if (tsdata->version == EDT_M06 || |
aed5d0ee SB |
1055 | tsdata->version == EDT_M09 || |
1056 | tsdata->version == EDT_M12) { | |
169110c3 SB |
1057 | input_set_abs_params(input, ABS_MT_POSITION_X, |
1058 | 0, tsdata->num_x * 64 - 1, 0, 0); | |
1059 | input_set_abs_params(input, ABS_MT_POSITION_Y, | |
1060 | 0, tsdata->num_y * 64 - 1, 0, 0); | |
1061 | } else { | |
1062 | /* Unknown maximum values. Specify via devicetree */ | |
1063 | input_set_abs_params(input, ABS_MT_POSITION_X, | |
1064 | 0, 65535, 0, 0); | |
1065 | input_set_abs_params(input, ABS_MT_POSITION_Y, | |
1066 | 0, 65535, 0, 0); | |
1067 | } | |
2c005598 | 1068 | |
ad368eb2 | 1069 | touchscreen_parse_properties(input, true, &tsdata->prop); |
2c005598 | 1070 | |
b1d2a3ec FCJ |
1071 | error = input_mt_init_slots(input, tsdata->max_support_points, |
1072 | INPUT_MT_DIRECT); | |
43c4d13e SB |
1073 | if (error) { |
1074 | dev_err(&client->dev, "Unable to init MT slots.\n"); | |
02300bd6 | 1075 | return error; |
43c4d13e SB |
1076 | } |
1077 | ||
43c4d13e SB |
1078 | i2c_set_clientdata(client, tsdata); |
1079 | ||
f0bef75c DT |
1080 | irq_flags = irq_get_trigger_type(client->irq); |
1081 | if (irq_flags == IRQF_TRIGGER_NONE) | |
1082 | irq_flags = IRQF_TRIGGER_FALLING; | |
1083 | irq_flags |= IRQF_ONESHOT; | |
1084 | ||
1085 | error = devm_request_threaded_irq(&client->dev, client->irq, | |
1086 | NULL, edt_ft5x06_ts_isr, irq_flags, | |
dac90dc2 | 1087 | client->name, tsdata); |
43c4d13e SB |
1088 | if (error) { |
1089 | dev_err(&client->dev, "Unable to request touchscreen IRQ.\n"); | |
02300bd6 | 1090 | return error; |
43c4d13e SB |
1091 | } |
1092 | ||
e3adf559 | 1093 | error = devm_device_add_group(&client->dev, &edt_ft5x06_attr_group); |
43c4d13e | 1094 | if (error) |
02300bd6 | 1095 | return error; |
43c4d13e SB |
1096 | |
1097 | error = input_register_device(input); | |
dac90dc2 | 1098 | if (error) |
e3adf559 | 1099 | return error; |
43c4d13e SB |
1100 | |
1101 | edt_ft5x06_ts_prepare_debugfs(tsdata, dev_driver_string(&client->dev)); | |
1102 | device_init_wakeup(&client->dev, 1); | |
1103 | ||
1104 | dev_dbg(&client->dev, | |
dac90dc2 | 1105 | "EDT FT5x06 initialized: IRQ %d, WAKE pin %d, Reset pin %d.\n", |
8b58cc36 FCJ |
1106 | client->irq, |
1107 | tsdata->wake_gpio ? desc_to_gpio(tsdata->wake_gpio) : -1, | |
1108 | tsdata->reset_gpio ? desc_to_gpio(tsdata->reset_gpio) : -1); | |
43c4d13e SB |
1109 | |
1110 | return 0; | |
43c4d13e SB |
1111 | } |
1112 | ||
e2619cf7 | 1113 | static int edt_ft5x06_ts_remove(struct i2c_client *client) |
43c4d13e | 1114 | { |
43c4d13e SB |
1115 | struct edt_ft5x06_ts_data *tsdata = i2c_get_clientdata(client); |
1116 | ||
1117 | edt_ft5x06_ts_teardown_debugfs(tsdata); | |
43c4d13e | 1118 | |
43c4d13e SB |
1119 | return 0; |
1120 | } | |
1121 | ||
02b6a58b | 1122 | static int __maybe_unused edt_ft5x06_ts_suspend(struct device *dev) |
43c4d13e SB |
1123 | { |
1124 | struct i2c_client *client = to_i2c_client(dev); | |
1125 | ||
1126 | if (device_may_wakeup(dev)) | |
1127 | enable_irq_wake(client->irq); | |
1128 | ||
1129 | return 0; | |
1130 | } | |
1131 | ||
02b6a58b | 1132 | static int __maybe_unused edt_ft5x06_ts_resume(struct device *dev) |
43c4d13e SB |
1133 | { |
1134 | struct i2c_client *client = to_i2c_client(dev); | |
1135 | ||
1136 | if (device_may_wakeup(dev)) | |
1137 | disable_irq_wake(client->irq); | |
1138 | ||
1139 | return 0; | |
1140 | } | |
43c4d13e SB |
1141 | |
1142 | static SIMPLE_DEV_PM_OPS(edt_ft5x06_ts_pm_ops, | |
1143 | edt_ft5x06_ts_suspend, edt_ft5x06_ts_resume); | |
1144 | ||
b1d2a3ec FCJ |
1145 | static const struct edt_i2c_chip_data edt_ft5x06_data = { |
1146 | .max_support_points = 5, | |
1147 | }; | |
1148 | ||
af33e0ad FCJ |
1149 | static const struct edt_i2c_chip_data edt_ft5506_data = { |
1150 | .max_support_points = 10, | |
1151 | }; | |
1152 | ||
d1871654 HG |
1153 | static const struct edt_i2c_chip_data edt_ft6236_data = { |
1154 | .max_support_points = 2, | |
1155 | }; | |
1156 | ||
43c4d13e | 1157 | static const struct i2c_device_id edt_ft5x06_ts_id[] = { |
b1d2a3ec | 1158 | { .name = "edt-ft5x06", .driver_data = (long)&edt_ft5x06_data }, |
af33e0ad | 1159 | { .name = "edt-ft5506", .driver_data = (long)&edt_ft5506_data }, |
d1871654 HG |
1160 | /* Note no edt- prefix for compatibility with the ft6236.c driver */ |
1161 | { .name = "ft6236", .driver_data = (long)&edt_ft6236_data }, | |
1730d814 | 1162 | { /* sentinel */ } |
43c4d13e SB |
1163 | }; |
1164 | MODULE_DEVICE_TABLE(i2c, edt_ft5x06_ts_id); | |
1165 | ||
dac90dc2 LW |
1166 | #ifdef CONFIG_OF |
1167 | static const struct of_device_id edt_ft5x06_of_match[] = { | |
b1d2a3ec FCJ |
1168 | { .compatible = "edt,edt-ft5206", .data = &edt_ft5x06_data }, |
1169 | { .compatible = "edt,edt-ft5306", .data = &edt_ft5x06_data }, | |
1170 | { .compatible = "edt,edt-ft5406", .data = &edt_ft5x06_data }, | |
af33e0ad | 1171 | { .compatible = "edt,edt-ft5506", .data = &edt_ft5506_data }, |
d1871654 HG |
1172 | /* Note focaltech vendor prefix for compatibility with ft6236.c */ |
1173 | { .compatible = "focaltech,ft6236", .data = &edt_ft6236_data }, | |
dac90dc2 LW |
1174 | { /* sentinel */ } |
1175 | }; | |
1176 | MODULE_DEVICE_TABLE(of, edt_ft5x06_of_match); | |
1177 | #endif | |
1178 | ||
43c4d13e SB |
1179 | static struct i2c_driver edt_ft5x06_ts_driver = { |
1180 | .driver = { | |
43c4d13e | 1181 | .name = "edt_ft5x06", |
dac90dc2 | 1182 | .of_match_table = of_match_ptr(edt_ft5x06_of_match), |
43c4d13e SB |
1183 | .pm = &edt_ft5x06_ts_pm_ops, |
1184 | }, | |
1185 | .id_table = edt_ft5x06_ts_id, | |
1186 | .probe = edt_ft5x06_ts_probe, | |
1cb0aa88 | 1187 | .remove = edt_ft5x06_ts_remove, |
43c4d13e SB |
1188 | }; |
1189 | ||
1190 | module_i2c_driver(edt_ft5x06_ts_driver); | |
1191 | ||
1192 | MODULE_AUTHOR("Simon Budig <simon.budig@kernelconcepts.de>"); | |
1193 | MODULE_DESCRIPTION("EDT FT5x06 I2C Touchscreen Driver"); | |
1194 | MODULE_LICENSE("GPL"); |