Commit | Line | Data |
---|---|---|
3eb1aa43 JK |
1 | /* |
2 | * Wacom W8001 penabled serial touchscreen driver | |
3 | * | |
4 | * Copyright (c) 2008 Jaya Kumar | |
aaba933e | 5 | * Copyright (c) 2010 Red Hat, Inc. |
5fca6cac | 6 | * Copyright (c) 2010 - 2011 Ping Cheng, Wacom. <pingc@wacom.com> |
3eb1aa43 JK |
7 | * |
8 | * This file is subject to the terms and conditions of the GNU General Public | |
9 | * License. See the file COPYING in the main directory of this archive for | |
10 | * more details. | |
11 | * | |
12 | * Layout based on Elo serial touchscreen driver by Vojtech Pavlik | |
13 | */ | |
14 | ||
15 | #include <linux/errno.h> | |
16 | #include <linux/kernel.h> | |
17 | #include <linux/module.h> | |
18 | #include <linux/slab.h> | |
47c78e89 | 19 | #include <linux/input/mt.h> |
3eb1aa43 | 20 | #include <linux/serio.h> |
3eb1aa43 | 21 | #include <linux/ctype.h> |
a6d38f88 | 22 | #include <linux/delay.h> |
3eb1aa43 JK |
23 | |
24 | #define DRIVER_DESC "Wacom W8001 serial touchscreen driver" | |
25 | ||
26 | MODULE_AUTHOR("Jaya Kumar <jayakumar.lkml@gmail.com>"); | |
27 | MODULE_DESCRIPTION(DRIVER_DESC); | |
28 | MODULE_LICENSE("GPL"); | |
29 | ||
2da9d2b5 JG |
30 | #define W8001_MAX_PHYS 42 |
31 | ||
12afb344 | 32 | #define W8001_MAX_LENGTH 13 |
41c372dc DT |
33 | #define W8001_LEAD_MASK 0x80 |
34 | #define W8001_LEAD_BYTE 0x80 | |
35 | #define W8001_TAB_MASK 0x40 | |
36 | #define W8001_TAB_BYTE 0x40 | |
aaba933e PH |
37 | /* set in first byte of touch data packets */ |
38 | #define W8001_TOUCH_MASK (0x10 | W8001_LEAD_MASK) | |
39 | #define W8001_TOUCH_BYTE (0x10 | W8001_LEAD_BYTE) | |
3eb1aa43 | 40 | |
41c372dc DT |
41 | #define W8001_QUERY_PACKET 0x20 |
42 | ||
a6d38f88 | 43 | #define W8001_CMD_STOP '0' |
41c372dc DT |
44 | #define W8001_CMD_START '1' |
45 | #define W8001_CMD_QUERY '*' | |
aaba933e PH |
46 | #define W8001_CMD_TOUCHQUERY '%' |
47 | ||
48 | /* length of data packets in bytes, depends on device. */ | |
49 | #define W8001_PKTLEN_TOUCH93 5 | |
50 | #define W8001_PKTLEN_TOUCH9A 7 | |
51 | #define W8001_PKTLEN_TPCPEN 9 | |
52 | #define W8001_PKTLEN_TPCCTL 11 /* control packet */ | |
53 | #define W8001_PKTLEN_TOUCH2FG 13 | |
3eb1aa43 | 54 | |
28a1bc1c PC |
55 | /* resolution in points/mm */ |
56 | #define W8001_PEN_RESOLUTION 100 | |
57 | #define W8001_TOUCH_RESOLUTION 10 | |
58 | ||
3eb1aa43 JK |
59 | struct w8001_coord { |
60 | u8 rdy; | |
61 | u8 tsw; | |
62 | u8 f1; | |
63 | u8 f2; | |
64 | u16 x; | |
65 | u16 y; | |
66 | u16 pen_pressure; | |
67 | u8 tilt_x; | |
68 | u8 tilt_y; | |
69 | }; | |
70 | ||
aaba933e PH |
71 | /* touch query reply packet */ |
72 | struct w8001_touch_query { | |
5fca6cac PC |
73 | u16 x; |
74 | u16 y; | |
aaba933e PH |
75 | u8 panel_res; |
76 | u8 capacity_res; | |
77 | u8 sensor_id; | |
aaba933e PH |
78 | }; |
79 | ||
3eb1aa43 JK |
80 | /* |
81 | * Per-touchscreen data. | |
82 | */ | |
83 | ||
84 | struct w8001 { | |
e0361b70 PH |
85 | struct input_dev *pen_dev; |
86 | struct input_dev *touch_dev; | |
3eb1aa43 | 87 | struct serio *serio; |
3eb1aa43 JK |
88 | struct completion cmd_done; |
89 | int id; | |
90 | int idx; | |
41c372dc DT |
91 | unsigned char response_type; |
92 | unsigned char response[W8001_MAX_LENGTH]; | |
3eb1aa43 | 93 | unsigned char data[W8001_MAX_LENGTH]; |
2da9d2b5 | 94 | char phys[W8001_MAX_PHYS]; |
2072f8db | 95 | int type; |
aaba933e | 96 | unsigned int pktlen; |
5fca6cac PC |
97 | u16 max_touch_x; |
98 | u16 max_touch_y; | |
99 | u16 max_pen_x; | |
100 | u16 max_pen_y; | |
e0361b70 PH |
101 | char pen_name[64]; |
102 | char touch_name[64]; | |
103 | int open_count; | |
104 | struct mutex mutex; | |
3eb1aa43 JK |
105 | }; |
106 | ||
5fca6cac | 107 | static void parse_pen_data(u8 *data, struct w8001_coord *coord) |
3eb1aa43 | 108 | { |
41c372dc DT |
109 | memset(coord, 0, sizeof(*coord)); |
110 | ||
3eb1aa43 JK |
111 | coord->rdy = data[0] & 0x20; |
112 | coord->tsw = data[0] & 0x01; | |
113 | coord->f1 = data[0] & 0x02; | |
114 | coord->f2 = data[0] & 0x04; | |
115 | ||
116 | coord->x = (data[1] & 0x7F) << 9; | |
117 | coord->x |= (data[2] & 0x7F) << 2; | |
118 | coord->x |= (data[6] & 0x60) >> 5; | |
119 | ||
120 | coord->y = (data[3] & 0x7F) << 9; | |
121 | coord->y |= (data[4] & 0x7F) << 2; | |
122 | coord->y |= (data[6] & 0x18) >> 3; | |
123 | ||
124 | coord->pen_pressure = data[5] & 0x7F; | |
125 | coord->pen_pressure |= (data[6] & 0x07) << 7 ; | |
126 | ||
127 | coord->tilt_x = data[7] & 0x7F; | |
128 | coord->tilt_y = data[8] & 0x7F; | |
3eb1aa43 JK |
129 | } |
130 | ||
5fca6cac PC |
131 | static void parse_single_touch(u8 *data, struct w8001_coord *coord) |
132 | { | |
133 | coord->x = (data[1] << 7) | data[2]; | |
134 | coord->y = (data[3] << 7) | data[4]; | |
135 | coord->tsw = data[0] & 0x01; | |
136 | } | |
137 | ||
138 | static void scale_touch_coordinates(struct w8001 *w8001, | |
139 | unsigned int *x, unsigned int *y) | |
140 | { | |
141 | if (w8001->max_pen_x && w8001->max_touch_x) | |
142 | *x = *x * w8001->max_pen_x / w8001->max_touch_x; | |
143 | ||
144 | if (w8001->max_pen_y && w8001->max_touch_y) | |
145 | *y = *y * w8001->max_pen_y / w8001->max_touch_y; | |
146 | } | |
147 | ||
148 | static void parse_multi_touch(struct w8001 *w8001) | |
5e8b9140 | 149 | { |
e0361b70 | 150 | struct input_dev *dev = w8001->touch_dev; |
5e8b9140 | 151 | unsigned char *data = w8001->data; |
5fca6cac | 152 | unsigned int x, y; |
5e8b9140 | 153 | int i; |
5fca6cac | 154 | int count = 0; |
5e8b9140 PH |
155 | |
156 | for (i = 0; i < 2; i++) { | |
c5f4dec1 | 157 | bool touch = data[0] & (1 << i); |
5e8b9140 | 158 | |
c5f4dec1 | 159 | input_mt_slot(dev, i); |
3e9161bf | 160 | input_mt_report_slot_state(dev, MT_TOOL_FINGER, touch); |
c5f4dec1 | 161 | if (touch) { |
5fca6cac PC |
162 | x = (data[6 * i + 1] << 7) | data[6 * i + 2]; |
163 | y = (data[6 * i + 3] << 7) | data[6 * i + 4]; | |
5e8b9140 PH |
164 | /* data[5,6] and [11,12] is finger capacity */ |
165 | ||
5fca6cac PC |
166 | /* scale to pen maximum */ |
167 | scale_touch_coordinates(w8001, &x, &y); | |
168 | ||
5e8b9140 PH |
169 | input_report_abs(dev, ABS_MT_POSITION_X, x); |
170 | input_report_abs(dev, ABS_MT_POSITION_Y, y); | |
5fca6cac | 171 | count++; |
5e8b9140 | 172 | } |
5e8b9140 PH |
173 | } |
174 | ||
5fca6cac PC |
175 | /* emulate single touch events when stylus is out of proximity. |
176 | * This is to make single touch backward support consistent | |
177 | * across all Wacom single touch devices. | |
178 | */ | |
179 | if (w8001->type != BTN_TOOL_PEN && | |
180 | w8001->type != BTN_TOOL_RUBBER) { | |
181 | w8001->type = count == 1 ? BTN_TOOL_FINGER : KEY_RESERVED; | |
182 | input_mt_report_pointer_emulation(dev, true); | |
183 | } | |
184 | ||
5e8b9140 PH |
185 | input_sync(dev); |
186 | } | |
187 | ||
aaba933e PH |
188 | static void parse_touchquery(u8 *data, struct w8001_touch_query *query) |
189 | { | |
190 | memset(query, 0, sizeof(*query)); | |
191 | ||
192 | query->panel_res = data[1]; | |
193 | query->sensor_id = data[2] & 0x7; | |
194 | query->capacity_res = data[7]; | |
195 | ||
196 | query->x = data[3] << 9; | |
197 | query->x |= data[4] << 2; | |
198 | query->x |= (data[2] >> 5) & 0x3; | |
199 | ||
200 | query->y = data[5] << 9; | |
201 | query->y |= data[6] << 2; | |
202 | query->y |= (data[2] >> 3) & 0x3; | |
5fca6cac PC |
203 | |
204 | /* Early days' single-finger touch models need the following defaults */ | |
205 | if (!query->x && !query->y) { | |
206 | query->x = 1024; | |
207 | query->y = 1024; | |
208 | if (query->panel_res) | |
209 | query->x = query->y = (1 << query->panel_res); | |
28a1bc1c | 210 | query->panel_res = W8001_TOUCH_RESOLUTION; |
5fca6cac | 211 | } |
aaba933e PH |
212 | } |
213 | ||
2072f8db PH |
214 | static void report_pen_events(struct w8001 *w8001, struct w8001_coord *coord) |
215 | { | |
e0361b70 | 216 | struct input_dev *dev = w8001->pen_dev; |
2072f8db PH |
217 | |
218 | /* | |
219 | * We have 1 bit for proximity (rdy) and 3 bits for tip, side, | |
220 | * side2/eraser. If rdy && f2 are set, this can be either pen + side2, | |
5fca6cac | 221 | * or eraser. Assume: |
2072f8db PH |
222 | * - if dev is already in proximity and f2 is toggled → pen + side2 |
223 | * - if dev comes into proximity with f2 set → eraser | |
224 | * If f2 disappears after assuming eraser, fake proximity out for | |
225 | * eraser and in for pen. | |
226 | */ | |
227 | ||
5fca6cac PC |
228 | switch (w8001->type) { |
229 | case BTN_TOOL_RUBBER: | |
2072f8db PH |
230 | if (!coord->f2) { |
231 | input_report_abs(dev, ABS_PRESSURE, 0); | |
232 | input_report_key(dev, BTN_TOUCH, 0); | |
233 | input_report_key(dev, BTN_STYLUS, 0); | |
234 | input_report_key(dev, BTN_STYLUS2, 0); | |
235 | input_report_key(dev, BTN_TOOL_RUBBER, 0); | |
236 | input_sync(dev); | |
237 | w8001->type = BTN_TOOL_PEN; | |
238 | } | |
5fca6cac PC |
239 | break; |
240 | ||
241 | case BTN_TOOL_FINGER: | |
5fca6cac PC |
242 | case KEY_RESERVED: |
243 | w8001->type = coord->f2 ? BTN_TOOL_RUBBER : BTN_TOOL_PEN; | |
244 | break; | |
245 | ||
246 | default: | |
2072f8db | 247 | input_report_key(dev, BTN_STYLUS2, coord->f2); |
5fca6cac | 248 | break; |
2072f8db PH |
249 | } |
250 | ||
251 | input_report_abs(dev, ABS_X, coord->x); | |
252 | input_report_abs(dev, ABS_Y, coord->y); | |
253 | input_report_abs(dev, ABS_PRESSURE, coord->pen_pressure); | |
254 | input_report_key(dev, BTN_TOUCH, coord->tsw); | |
255 | input_report_key(dev, BTN_STYLUS, coord->f1); | |
256 | input_report_key(dev, w8001->type, coord->rdy); | |
257 | input_sync(dev); | |
258 | ||
259 | if (!coord->rdy) | |
5fca6cac PC |
260 | w8001->type = KEY_RESERVED; |
261 | } | |
262 | ||
263 | static void report_single_touch(struct w8001 *w8001, struct w8001_coord *coord) | |
264 | { | |
e0361b70 | 265 | struct input_dev *dev = w8001->touch_dev; |
5fca6cac PC |
266 | unsigned int x = coord->x; |
267 | unsigned int y = coord->y; | |
268 | ||
269 | /* scale to pen maximum */ | |
270 | scale_touch_coordinates(w8001, &x, &y); | |
271 | ||
272 | input_report_abs(dev, ABS_X, x); | |
273 | input_report_abs(dev, ABS_Y, y); | |
274 | input_report_key(dev, BTN_TOUCH, coord->tsw); | |
5fca6cac PC |
275 | |
276 | input_sync(dev); | |
277 | ||
278 | w8001->type = coord->tsw ? BTN_TOOL_FINGER : KEY_RESERVED; | |
2072f8db PH |
279 | } |
280 | ||
41c372dc DT |
281 | static irqreturn_t w8001_interrupt(struct serio *serio, |
282 | unsigned char data, unsigned int flags) | |
3eb1aa43 | 283 | { |
41c372dc | 284 | struct w8001 *w8001 = serio_get_drvdata(serio); |
3eb1aa43 | 285 | struct w8001_coord coord; |
41c372dc | 286 | unsigned char tmp; |
3eb1aa43 JK |
287 | |
288 | w8001->data[w8001->idx] = data; | |
289 | switch (w8001->idx++) { | |
290 | case 0: | |
291 | if ((data & W8001_LEAD_MASK) != W8001_LEAD_BYTE) { | |
292 | pr_debug("w8001: unsynchronized data: 0x%02x\n", data); | |
293 | w8001->idx = 0; | |
294 | } | |
295 | break; | |
41c372dc | 296 | |
aaba933e PH |
297 | case W8001_PKTLEN_TOUCH93 - 1: |
298 | case W8001_PKTLEN_TOUCH9A - 1: | |
5fca6cac PC |
299 | tmp = w8001->data[0] & W8001_TOUCH_BYTE; |
300 | if (tmp != W8001_TOUCH_BYTE) | |
301 | break; | |
302 | ||
303 | if (w8001->pktlen == w8001->idx) { | |
aaba933e | 304 | w8001->idx = 0; |
5fca6cac PC |
305 | if (w8001->type != BTN_TOOL_PEN && |
306 | w8001->type != BTN_TOOL_RUBBER) { | |
307 | parse_single_touch(w8001->data, &coord); | |
308 | report_single_touch(w8001, &coord); | |
309 | } | |
310 | } | |
aaba933e PH |
311 | break; |
312 | ||
313 | /* Pen coordinates packet */ | |
314 | case W8001_PKTLEN_TPCPEN - 1: | |
3eb1aa43 JK |
315 | tmp = w8001->data[0] & W8001_TAB_MASK; |
316 | if (unlikely(tmp == W8001_TAB_BYTE)) | |
317 | break; | |
41c372dc | 318 | |
5fca6cac | 319 | tmp = w8001->data[0] & W8001_TOUCH_BYTE; |
aaba933e PH |
320 | if (tmp == W8001_TOUCH_BYTE) |
321 | break; | |
322 | ||
3eb1aa43 | 323 | w8001->idx = 0; |
5fca6cac | 324 | parse_pen_data(w8001->data, &coord); |
2072f8db | 325 | report_pen_events(w8001, &coord); |
3eb1aa43 | 326 | break; |
41c372dc | 327 | |
aaba933e PH |
328 | /* control packet */ |
329 | case W8001_PKTLEN_TPCCTL - 1: | |
5fca6cac | 330 | tmp = w8001->data[0] & W8001_TOUCH_MASK; |
aaba933e PH |
331 | if (tmp == W8001_TOUCH_BYTE) |
332 | break; | |
333 | ||
3eb1aa43 | 334 | w8001->idx = 0; |
41c372dc DT |
335 | memcpy(w8001->response, w8001->data, W8001_MAX_LENGTH); |
336 | w8001->response_type = W8001_QUERY_PACKET; | |
3eb1aa43 JK |
337 | complete(&w8001->cmd_done); |
338 | break; | |
aaba933e | 339 | |
5e8b9140 | 340 | /* 2 finger touch packet */ |
aaba933e | 341 | case W8001_PKTLEN_TOUCH2FG - 1: |
5e8b9140 | 342 | w8001->idx = 0; |
5fca6cac | 343 | parse_multi_touch(w8001); |
aaba933e | 344 | break; |
9e72ac74 PC |
345 | |
346 | default: | |
347 | /* | |
348 | * ThinkPad X60 Tablet PC (pen only device) sometimes | |
349 | * sends invalid data packets that are larger than | |
350 | * W8001_PKTLEN_TPCPEN. Let's start over again. | |
351 | */ | |
352 | if (!w8001->touch_dev && w8001->idx > W8001_PKTLEN_TPCPEN - 1) | |
353 | w8001->idx = 0; | |
3eb1aa43 | 354 | } |
3eb1aa43 JK |
355 | |
356 | return IRQ_HANDLED; | |
357 | } | |
358 | ||
41c372dc DT |
359 | static int w8001_command(struct w8001 *w8001, unsigned char command, |
360 | bool wait_response) | |
3eb1aa43 | 361 | { |
41c372dc | 362 | int rc; |
3eb1aa43 | 363 | |
41c372dc | 364 | w8001->response_type = 0; |
3eb1aa43 | 365 | init_completion(&w8001->cmd_done); |
3eb1aa43 | 366 | |
41c372dc DT |
367 | rc = serio_write(w8001->serio, command); |
368 | if (rc == 0 && wait_response) { | |
3eb1aa43 | 369 | |
41c372dc DT |
370 | wait_for_completion_timeout(&w8001->cmd_done, HZ); |
371 | if (w8001->response_type != W8001_QUERY_PACKET) | |
372 | rc = -EIO; | |
3eb1aa43 JK |
373 | } |
374 | ||
3eb1aa43 JK |
375 | return rc; |
376 | } | |
377 | ||
e9496746 DT |
378 | static int w8001_open(struct input_dev *dev) |
379 | { | |
380 | struct w8001 *w8001 = input_get_drvdata(dev); | |
e0361b70 PH |
381 | int err; |
382 | ||
383 | err = mutex_lock_interruptible(&w8001->mutex); | |
384 | if (err) | |
385 | return err; | |
386 | ||
387 | if (w8001->open_count++ == 0) { | |
388 | err = w8001_command(w8001, W8001_CMD_START, false); | |
389 | if (err) | |
390 | w8001->open_count--; | |
391 | } | |
e9496746 | 392 | |
e0361b70 PH |
393 | mutex_unlock(&w8001->mutex); |
394 | return err; | |
e9496746 DT |
395 | } |
396 | ||
397 | static void w8001_close(struct input_dev *dev) | |
398 | { | |
399 | struct w8001 *w8001 = input_get_drvdata(dev); | |
400 | ||
e0361b70 PH |
401 | mutex_lock(&w8001->mutex); |
402 | ||
403 | if (--w8001->open_count == 0) | |
404 | w8001_command(w8001, W8001_CMD_STOP, false); | |
405 | ||
406 | mutex_unlock(&w8001->mutex); | |
e9496746 DT |
407 | } |
408 | ||
5d0a4fe2 | 409 | static int w8001_detect(struct w8001 *w8001) |
3eb1aa43 | 410 | { |
5d0a4fe2 | 411 | int error; |
3eb1aa43 | 412 | |
a6d38f88 | 413 | error = w8001_command(w8001, W8001_CMD_STOP, false); |
41c372dc DT |
414 | if (error) |
415 | return error; | |
3eb1aa43 | 416 | |
a6d38f88 | 417 | msleep(250); /* wait 250ms before querying the device */ |
3eb1aa43 | 418 | |
5d0a4fe2 PH |
419 | return 0; |
420 | } | |
421 | ||
e0361b70 PH |
422 | static int w8001_setup_pen(struct w8001 *w8001, char *basename, |
423 | size_t basename_sz) | |
5d0a4fe2 | 424 | { |
e0361b70 | 425 | struct input_dev *dev = w8001->pen_dev; |
5d0a4fe2 PH |
426 | struct w8001_coord coord; |
427 | int error; | |
428 | ||
a6d38f88 | 429 | /* penabled? */ |
5d0a4fe2 PH |
430 | error = w8001_command(w8001, W8001_CMD_QUERY, true); |
431 | if (error) | |
432 | return error; | |
433 | ||
e0361b70 PH |
434 | __set_bit(EV_KEY, dev->evbit); |
435 | __set_bit(EV_ABS, dev->evbit); | |
5d0a4fe2 PH |
436 | __set_bit(BTN_TOUCH, dev->keybit); |
437 | __set_bit(BTN_TOOL_PEN, dev->keybit); | |
438 | __set_bit(BTN_TOOL_RUBBER, dev->keybit); | |
439 | __set_bit(BTN_STYLUS, dev->keybit); | |
440 | __set_bit(BTN_STYLUS2, dev->keybit); | |
e0361b70 | 441 | __set_bit(INPUT_PROP_DIRECT, dev->propbit); |
5d0a4fe2 PH |
442 | |
443 | parse_pen_data(w8001->response, &coord); | |
444 | w8001->max_pen_x = coord.x; | |
445 | w8001->max_pen_y = coord.y; | |
446 | ||
447 | input_set_abs_params(dev, ABS_X, 0, coord.x, 0, 0); | |
448 | input_set_abs_params(dev, ABS_Y, 0, coord.y, 0, 0); | |
449 | input_abs_set_res(dev, ABS_X, W8001_PEN_RESOLUTION); | |
450 | input_abs_set_res(dev, ABS_Y, W8001_PEN_RESOLUTION); | |
451 | input_set_abs_params(dev, ABS_PRESSURE, 0, coord.pen_pressure, 0, 0); | |
452 | if (coord.tilt_x && coord.tilt_y) { | |
453 | input_set_abs_params(dev, ABS_TILT_X, 0, coord.tilt_x, 0, 0); | |
454 | input_set_abs_params(dev, ABS_TILT_Y, 0, coord.tilt_y, 0, 0); | |
a6d38f88 | 455 | } |
3eb1aa43 | 456 | |
5d0a4fe2 | 457 | w8001->id = 0x90; |
e0361b70 | 458 | strlcat(basename, " Penabled", basename_sz); |
5d0a4fe2 PH |
459 | |
460 | return 0; | |
461 | } | |
462 | ||
e0361b70 PH |
463 | static int w8001_setup_touch(struct w8001 *w8001, char *basename, |
464 | size_t basename_sz) | |
5d0a4fe2 | 465 | { |
e0361b70 | 466 | struct input_dev *dev = w8001->touch_dev; |
5d0a4fe2 PH |
467 | struct w8001_touch_query touch; |
468 | int error; | |
469 | ||
e0361b70 | 470 | |
a6d38f88 | 471 | /* Touch enabled? */ |
5d0a4fe2 PH |
472 | error = w8001_command(w8001, W8001_CMD_TOUCHQUERY, true); |
473 | if (error) | |
474 | return error; | |
475 | /* | |
476 | * Some non-touch devices may reply to the touch query. But their | |
477 | * second byte is empty, which indicates touch is not supported. | |
478 | */ | |
479 | if (!w8001->response[1]) | |
480 | return -ENXIO; | |
a6d38f88 | 481 | |
e0361b70 PH |
482 | __set_bit(EV_KEY, dev->evbit); |
483 | __set_bit(EV_ABS, dev->evbit); | |
5d0a4fe2 | 484 | __set_bit(BTN_TOUCH, dev->keybit); |
e0361b70 | 485 | __set_bit(INPUT_PROP_DIRECT, dev->propbit); |
e1717354 | 486 | |
5d0a4fe2 PH |
487 | parse_touchquery(w8001->response, &touch); |
488 | w8001->max_touch_x = touch.x; | |
489 | w8001->max_touch_y = touch.y; | |
aaba933e | 490 | |
5d0a4fe2 PH |
491 | if (w8001->max_pen_x && w8001->max_pen_y) { |
492 | /* if pen is supported scale to pen maximum */ | |
493 | touch.x = w8001->max_pen_x; | |
494 | touch.y = w8001->max_pen_y; | |
495 | touch.panel_res = W8001_PEN_RESOLUTION; | |
496 | } | |
5fca6cac | 497 | |
5d0a4fe2 PH |
498 | input_set_abs_params(dev, ABS_X, 0, touch.x, 0, 0); |
499 | input_set_abs_params(dev, ABS_Y, 0, touch.y, 0, 0); | |
500 | input_abs_set_res(dev, ABS_X, touch.panel_res); | |
501 | input_abs_set_res(dev, ABS_Y, touch.panel_res); | |
aaba933e | 502 | |
5d0a4fe2 PH |
503 | switch (touch.sensor_id) { |
504 | case 0: | |
505 | case 2: | |
506 | w8001->pktlen = W8001_PKTLEN_TOUCH93; | |
507 | w8001->id = 0x93; | |
e0361b70 | 508 | strlcat(basename, " 1FG", basename_sz); |
5d0a4fe2 | 509 | break; |
5fca6cac | 510 | |
5d0a4fe2 PH |
511 | case 1: |
512 | case 3: | |
513 | case 4: | |
514 | w8001->pktlen = W8001_PKTLEN_TOUCH9A; | |
e0361b70 | 515 | strlcat(basename, " 1FG", basename_sz); |
5d0a4fe2 PH |
516 | w8001->id = 0x9a; |
517 | break; | |
5fca6cac | 518 | |
5d0a4fe2 PH |
519 | case 5: |
520 | w8001->pktlen = W8001_PKTLEN_TOUCH2FG; | |
521 | ||
522 | __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit); | |
3746e567 PC |
523 | error = input_mt_init_slots(dev, 2, 0); |
524 | if (error) { | |
525 | dev_err(&w8001->serio->dev, | |
526 | "failed to initialize MT slots: %d\n", error); | |
527 | return error; | |
528 | } | |
529 | ||
5d0a4fe2 PH |
530 | input_set_abs_params(dev, ABS_MT_POSITION_X, |
531 | 0, touch.x, 0, 0); | |
532 | input_set_abs_params(dev, ABS_MT_POSITION_Y, | |
533 | 0, touch.y, 0, 0); | |
3e9161bf DT |
534 | input_set_abs_params(dev, ABS_MT_TOOL_TYPE, |
535 | 0, MT_TOOL_MAX, 0, 0); | |
ae10850c PC |
536 | input_abs_set_res(dev, ABS_MT_POSITION_X, touch.panel_res); |
537 | input_abs_set_res(dev, ABS_MT_POSITION_Y, touch.panel_res); | |
5d0a4fe2 | 538 | |
e0361b70 | 539 | strlcat(basename, " 2FG", basename_sz); |
5d0a4fe2 PH |
540 | if (w8001->max_pen_x && w8001->max_pen_y) |
541 | w8001->id = 0xE3; | |
542 | else | |
543 | w8001->id = 0xE2; | |
544 | break; | |
aaba933e PH |
545 | } |
546 | ||
e0361b70 | 547 | strlcat(basename, " Touchscreen", basename_sz); |
5fca6cac | 548 | |
5d0a4fe2 | 549 | return 0; |
3eb1aa43 JK |
550 | } |
551 | ||
e0361b70 PH |
552 | static void w8001_set_devdata(struct input_dev *dev, struct w8001 *w8001, |
553 | struct serio *serio) | |
554 | { | |
555 | dev->phys = w8001->phys; | |
556 | dev->id.bustype = BUS_RS232; | |
557 | dev->id.product = w8001->id; | |
558 | dev->id.vendor = 0x056a; | |
559 | dev->id.version = 0x0100; | |
560 | dev->open = w8001_open; | |
561 | dev->close = w8001_close; | |
562 | ||
563 | dev->dev.parent = &serio->dev; | |
564 | ||
565 | input_set_drvdata(dev, w8001); | |
566 | } | |
567 | ||
3eb1aa43 JK |
568 | /* |
569 | * w8001_disconnect() is the opposite of w8001_connect() | |
570 | */ | |
571 | ||
572 | static void w8001_disconnect(struct serio *serio) | |
573 | { | |
574 | struct w8001 *w8001 = serio_get_drvdata(serio); | |
575 | ||
3eb1aa43 | 576 | serio_close(serio); |
66fd9385 | 577 | |
e0361b70 PH |
578 | if (w8001->pen_dev) |
579 | input_unregister_device(w8001->pen_dev); | |
580 | if (w8001->touch_dev) | |
581 | input_unregister_device(w8001->touch_dev); | |
3eb1aa43 | 582 | kfree(w8001); |
66fd9385 DT |
583 | |
584 | serio_set_drvdata(serio, NULL); | |
3eb1aa43 JK |
585 | } |
586 | ||
587 | /* | |
588 | * w8001_connect() is the routine that is called when someone adds a | |
589 | * new serio device that supports the w8001 protocol and registers it as | |
590 | * an input device. | |
591 | */ | |
592 | ||
593 | static int w8001_connect(struct serio *serio, struct serio_driver *drv) | |
594 | { | |
595 | struct w8001 *w8001; | |
e0361b70 PH |
596 | struct input_dev *input_dev_pen; |
597 | struct input_dev *input_dev_touch; | |
598 | char basename[64]; | |
5d0a4fe2 | 599 | int err, err_pen, err_touch; |
3eb1aa43 JK |
600 | |
601 | w8001 = kzalloc(sizeof(struct w8001), GFP_KERNEL); | |
e0361b70 PH |
602 | input_dev_pen = input_allocate_device(); |
603 | input_dev_touch = input_allocate_device(); | |
604 | if (!w8001 || !input_dev_pen || !input_dev_touch) { | |
3eb1aa43 JK |
605 | err = -ENOMEM; |
606 | goto fail1; | |
607 | } | |
608 | ||
609 | w8001->serio = serio; | |
e0361b70 PH |
610 | w8001->pen_dev = input_dev_pen; |
611 | w8001->touch_dev = input_dev_touch; | |
612 | mutex_init(&w8001->mutex); | |
3eb1aa43 JK |
613 | init_completion(&w8001->cmd_done); |
614 | snprintf(w8001->phys, sizeof(w8001->phys), "%s/input0", serio->phys); | |
615 | ||
3eb1aa43 JK |
616 | serio_set_drvdata(serio, w8001); |
617 | err = serio_open(serio, drv); | |
618 | if (err) | |
619 | goto fail2; | |
620 | ||
5d0a4fe2 | 621 | err = w8001_detect(w8001); |
41c372dc | 622 | if (err) |
3eb1aa43 JK |
623 | goto fail3; |
624 | ||
e0361b70 PH |
625 | /* For backwards-compatibility we compose the basename based on |
626 | * capabilities and then just append the tool type | |
627 | */ | |
a9f08ad7 | 628 | strscpy(basename, "Wacom Serial", sizeof(basename)); |
e0361b70 PH |
629 | |
630 | err_pen = w8001_setup_pen(w8001, basename, sizeof(basename)); | |
631 | err_touch = w8001_setup_touch(w8001, basename, sizeof(basename)); | |
5d0a4fe2 PH |
632 | if (err_pen && err_touch) { |
633 | err = -ENXIO; | |
634 | goto fail3; | |
635 | } | |
636 | ||
e0361b70 | 637 | if (!err_pen) { |
a9f08ad7 | 638 | strscpy(w8001->pen_name, basename, sizeof(w8001->pen_name)); |
e0361b70 PH |
639 | strlcat(w8001->pen_name, " Pen", sizeof(w8001->pen_name)); |
640 | input_dev_pen->name = w8001->pen_name; | |
5fca6cac | 641 | |
e0361b70 | 642 | w8001_set_devdata(input_dev_pen, w8001, serio); |
e9496746 | 643 | |
e0361b70 PH |
644 | err = input_register_device(w8001->pen_dev); |
645 | if (err) | |
646 | goto fail3; | |
647 | } else { | |
648 | input_free_device(input_dev_pen); | |
649 | input_dev_pen = NULL; | |
650 | w8001->pen_dev = NULL; | |
651 | } | |
e9496746 | 652 | |
e0361b70 | 653 | if (!err_touch) { |
a9f08ad7 | 654 | strscpy(w8001->touch_name, basename, sizeof(w8001->touch_name)); |
e0361b70 PH |
655 | strlcat(w8001->touch_name, " Finger", |
656 | sizeof(w8001->touch_name)); | |
657 | input_dev_touch->name = w8001->touch_name; | |
658 | ||
659 | w8001_set_devdata(input_dev_touch, w8001, serio); | |
660 | ||
661 | err = input_register_device(w8001->touch_dev); | |
662 | if (err) | |
663 | goto fail4; | |
664 | } else { | |
665 | input_free_device(input_dev_touch); | |
666 | input_dev_touch = NULL; | |
667 | w8001->touch_dev = NULL; | |
668 | } | |
3eb1aa43 JK |
669 | |
670 | return 0; | |
671 | ||
e0361b70 PH |
672 | fail4: |
673 | if (w8001->pen_dev) | |
674 | input_unregister_device(w8001->pen_dev); | |
3eb1aa43 JK |
675 | fail3: |
676 | serio_close(serio); | |
677 | fail2: | |
678 | serio_set_drvdata(serio, NULL); | |
679 | fail1: | |
e0361b70 PH |
680 | input_free_device(input_dev_pen); |
681 | input_free_device(input_dev_touch); | |
3eb1aa43 JK |
682 | kfree(w8001); |
683 | return err; | |
684 | } | |
685 | ||
663c8b55 | 686 | static const struct serio_device_id w8001_serio_ids[] = { |
3eb1aa43 JK |
687 | { |
688 | .type = SERIO_RS232, | |
689 | .proto = SERIO_W8001, | |
690 | .id = SERIO_ANY, | |
691 | .extra = SERIO_ANY, | |
692 | }, | |
693 | { 0 } | |
694 | }; | |
695 | ||
696 | MODULE_DEVICE_TABLE(serio, w8001_serio_ids); | |
697 | ||
698 | static struct serio_driver w8001_drv = { | |
699 | .driver = { | |
700 | .name = "w8001", | |
701 | }, | |
702 | .description = DRIVER_DESC, | |
703 | .id_table = w8001_serio_ids, | |
704 | .interrupt = w8001_interrupt, | |
705 | .connect = w8001_connect, | |
706 | .disconnect = w8001_disconnect, | |
707 | }; | |
708 | ||
65ac9f7a | 709 | module_serio_driver(w8001_drv); |