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