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 | ||
3eb1aa43 | 30 | #define W8001_MAX_LENGTH 11 |
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 { | |
83 | struct input_dev *dev; | |
84 | struct serio *serio; | |
3eb1aa43 JK |
85 | struct completion cmd_done; |
86 | int id; | |
87 | int idx; | |
41c372dc DT |
88 | unsigned char response_type; |
89 | unsigned char response[W8001_MAX_LENGTH]; | |
3eb1aa43 | 90 | unsigned char data[W8001_MAX_LENGTH]; |
3eb1aa43 | 91 | char phys[32]; |
2072f8db | 92 | int type; |
aaba933e | 93 | unsigned int pktlen; |
5fca6cac PC |
94 | u16 max_touch_x; |
95 | u16 max_touch_y; | |
96 | u16 max_pen_x; | |
97 | u16 max_pen_y; | |
98 | char name[64]; | |
3eb1aa43 JK |
99 | }; |
100 | ||
5fca6cac | 101 | static void parse_pen_data(u8 *data, struct w8001_coord *coord) |
3eb1aa43 | 102 | { |
41c372dc DT |
103 | memset(coord, 0, sizeof(*coord)); |
104 | ||
3eb1aa43 JK |
105 | coord->rdy = data[0] & 0x20; |
106 | coord->tsw = data[0] & 0x01; | |
107 | coord->f1 = data[0] & 0x02; | |
108 | coord->f2 = data[0] & 0x04; | |
109 | ||
110 | coord->x = (data[1] & 0x7F) << 9; | |
111 | coord->x |= (data[2] & 0x7F) << 2; | |
112 | coord->x |= (data[6] & 0x60) >> 5; | |
113 | ||
114 | coord->y = (data[3] & 0x7F) << 9; | |
115 | coord->y |= (data[4] & 0x7F) << 2; | |
116 | coord->y |= (data[6] & 0x18) >> 3; | |
117 | ||
118 | coord->pen_pressure = data[5] & 0x7F; | |
119 | coord->pen_pressure |= (data[6] & 0x07) << 7 ; | |
120 | ||
121 | coord->tilt_x = data[7] & 0x7F; | |
122 | coord->tilt_y = data[8] & 0x7F; | |
3eb1aa43 JK |
123 | } |
124 | ||
5fca6cac PC |
125 | static void parse_single_touch(u8 *data, struct w8001_coord *coord) |
126 | { | |
127 | coord->x = (data[1] << 7) | data[2]; | |
128 | coord->y = (data[3] << 7) | data[4]; | |
129 | coord->tsw = data[0] & 0x01; | |
130 | } | |
131 | ||
132 | static void scale_touch_coordinates(struct w8001 *w8001, | |
133 | unsigned int *x, unsigned int *y) | |
134 | { | |
135 | if (w8001->max_pen_x && w8001->max_touch_x) | |
136 | *x = *x * w8001->max_pen_x / w8001->max_touch_x; | |
137 | ||
138 | if (w8001->max_pen_y && w8001->max_touch_y) | |
139 | *y = *y * w8001->max_pen_y / w8001->max_touch_y; | |
140 | } | |
141 | ||
142 | static void parse_multi_touch(struct w8001 *w8001) | |
5e8b9140 | 143 | { |
5e8b9140 PH |
144 | struct input_dev *dev = w8001->dev; |
145 | unsigned char *data = w8001->data; | |
5fca6cac | 146 | unsigned int x, y; |
5e8b9140 | 147 | int i; |
5fca6cac | 148 | int count = 0; |
5e8b9140 PH |
149 | |
150 | for (i = 0; i < 2; i++) { | |
c5f4dec1 | 151 | bool touch = data[0] & (1 << i); |
5e8b9140 | 152 | |
c5f4dec1 HR |
153 | input_mt_slot(dev, i); |
154 | input_mt_report_slot_state(dev, MT_TOOL_FINGER, touch); | |
155 | if (touch) { | |
5fca6cac PC |
156 | x = (data[6 * i + 1] << 7) | data[6 * i + 2]; |
157 | y = (data[6 * i + 3] << 7) | data[6 * i + 4]; | |
5e8b9140 PH |
158 | /* data[5,6] and [11,12] is finger capacity */ |
159 | ||
5fca6cac PC |
160 | /* scale to pen maximum */ |
161 | scale_touch_coordinates(w8001, &x, &y); | |
162 | ||
5e8b9140 PH |
163 | input_report_abs(dev, ABS_MT_POSITION_X, x); |
164 | input_report_abs(dev, ABS_MT_POSITION_Y, y); | |
5fca6cac | 165 | count++; |
5e8b9140 | 166 | } |
5e8b9140 PH |
167 | } |
168 | ||
5fca6cac PC |
169 | /* emulate single touch events when stylus is out of proximity. |
170 | * This is to make single touch backward support consistent | |
171 | * across all Wacom single touch devices. | |
172 | */ | |
173 | if (w8001->type != BTN_TOOL_PEN && | |
174 | w8001->type != BTN_TOOL_RUBBER) { | |
175 | w8001->type = count == 1 ? BTN_TOOL_FINGER : KEY_RESERVED; | |
176 | input_mt_report_pointer_emulation(dev, true); | |
177 | } | |
178 | ||
5e8b9140 PH |
179 | input_sync(dev); |
180 | } | |
181 | ||
aaba933e PH |
182 | static void parse_touchquery(u8 *data, struct w8001_touch_query *query) |
183 | { | |
184 | memset(query, 0, sizeof(*query)); | |
185 | ||
186 | query->panel_res = data[1]; | |
187 | query->sensor_id = data[2] & 0x7; | |
188 | query->capacity_res = data[7]; | |
189 | ||
190 | query->x = data[3] << 9; | |
191 | query->x |= data[4] << 2; | |
192 | query->x |= (data[2] >> 5) & 0x3; | |
193 | ||
194 | query->y = data[5] << 9; | |
195 | query->y |= data[6] << 2; | |
196 | query->y |= (data[2] >> 3) & 0x3; | |
5fca6cac PC |
197 | |
198 | /* Early days' single-finger touch models need the following defaults */ | |
199 | if (!query->x && !query->y) { | |
200 | query->x = 1024; | |
201 | query->y = 1024; | |
202 | if (query->panel_res) | |
203 | query->x = query->y = (1 << query->panel_res); | |
28a1bc1c | 204 | query->panel_res = W8001_TOUCH_RESOLUTION; |
5fca6cac | 205 | } |
aaba933e PH |
206 | } |
207 | ||
2072f8db PH |
208 | static void report_pen_events(struct w8001 *w8001, struct w8001_coord *coord) |
209 | { | |
210 | struct input_dev *dev = w8001->dev; | |
211 | ||
212 | /* | |
213 | * We have 1 bit for proximity (rdy) and 3 bits for tip, side, | |
214 | * side2/eraser. If rdy && f2 are set, this can be either pen + side2, | |
5fca6cac | 215 | * or eraser. Assume: |
2072f8db PH |
216 | * - if dev is already in proximity and f2 is toggled → pen + side2 |
217 | * - if dev comes into proximity with f2 set → eraser | |
218 | * If f2 disappears after assuming eraser, fake proximity out for | |
219 | * eraser and in for pen. | |
220 | */ | |
221 | ||
5fca6cac PC |
222 | switch (w8001->type) { |
223 | case BTN_TOOL_RUBBER: | |
2072f8db PH |
224 | if (!coord->f2) { |
225 | input_report_abs(dev, ABS_PRESSURE, 0); | |
226 | input_report_key(dev, BTN_TOUCH, 0); | |
227 | input_report_key(dev, BTN_STYLUS, 0); | |
228 | input_report_key(dev, BTN_STYLUS2, 0); | |
229 | input_report_key(dev, BTN_TOOL_RUBBER, 0); | |
230 | input_sync(dev); | |
231 | w8001->type = BTN_TOOL_PEN; | |
232 | } | |
5fca6cac PC |
233 | break; |
234 | ||
235 | case BTN_TOOL_FINGER: | |
236 | input_report_key(dev, BTN_TOUCH, 0); | |
237 | input_report_key(dev, BTN_TOOL_FINGER, 0); | |
238 | input_sync(dev); | |
239 | /* fall through */ | |
240 | ||
241 | case KEY_RESERVED: | |
242 | w8001->type = coord->f2 ? BTN_TOOL_RUBBER : BTN_TOOL_PEN; | |
243 | break; | |
244 | ||
245 | default: | |
2072f8db | 246 | input_report_key(dev, BTN_STYLUS2, coord->f2); |
5fca6cac | 247 | break; |
2072f8db PH |
248 | } |
249 | ||
250 | input_report_abs(dev, ABS_X, coord->x); | |
251 | input_report_abs(dev, ABS_Y, coord->y); | |
252 | input_report_abs(dev, ABS_PRESSURE, coord->pen_pressure); | |
253 | input_report_key(dev, BTN_TOUCH, coord->tsw); | |
254 | input_report_key(dev, BTN_STYLUS, coord->f1); | |
255 | input_report_key(dev, w8001->type, coord->rdy); | |
256 | input_sync(dev); | |
257 | ||
258 | if (!coord->rdy) | |
5fca6cac PC |
259 | w8001->type = KEY_RESERVED; |
260 | } | |
261 | ||
262 | static void report_single_touch(struct w8001 *w8001, struct w8001_coord *coord) | |
263 | { | |
264 | struct input_dev *dev = w8001->dev; | |
265 | unsigned int x = coord->x; | |
266 | unsigned int y = coord->y; | |
267 | ||
268 | /* scale to pen maximum */ | |
269 | scale_touch_coordinates(w8001, &x, &y); | |
270 | ||
271 | input_report_abs(dev, ABS_X, x); | |
272 | input_report_abs(dev, ABS_Y, y); | |
273 | input_report_key(dev, BTN_TOUCH, coord->tsw); | |
274 | input_report_key(dev, BTN_TOOL_FINGER, coord->tsw); | |
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; |
3eb1aa43 | 345 | } |
3eb1aa43 JK |
346 | |
347 | return IRQ_HANDLED; | |
348 | } | |
349 | ||
41c372dc DT |
350 | static int w8001_command(struct w8001 *w8001, unsigned char command, |
351 | bool wait_response) | |
3eb1aa43 | 352 | { |
41c372dc | 353 | int rc; |
3eb1aa43 | 354 | |
41c372dc | 355 | w8001->response_type = 0; |
3eb1aa43 | 356 | init_completion(&w8001->cmd_done); |
3eb1aa43 | 357 | |
41c372dc DT |
358 | rc = serio_write(w8001->serio, command); |
359 | if (rc == 0 && wait_response) { | |
3eb1aa43 | 360 | |
41c372dc DT |
361 | wait_for_completion_timeout(&w8001->cmd_done, HZ); |
362 | if (w8001->response_type != W8001_QUERY_PACKET) | |
363 | rc = -EIO; | |
3eb1aa43 JK |
364 | } |
365 | ||
3eb1aa43 JK |
366 | return rc; |
367 | } | |
368 | ||
e9496746 DT |
369 | static int w8001_open(struct input_dev *dev) |
370 | { | |
371 | struct w8001 *w8001 = input_get_drvdata(dev); | |
372 | ||
373 | return w8001_command(w8001, W8001_CMD_START, false); | |
374 | } | |
375 | ||
376 | static void w8001_close(struct input_dev *dev) | |
377 | { | |
378 | struct w8001 *w8001 = input_get_drvdata(dev); | |
379 | ||
380 | w8001_command(w8001, W8001_CMD_STOP, false); | |
381 | } | |
382 | ||
3eb1aa43 JK |
383 | static int w8001_setup(struct w8001 *w8001) |
384 | { | |
3eb1aa43 | 385 | struct input_dev *dev = w8001->dev; |
41c372dc | 386 | struct w8001_coord coord; |
5fca6cac | 387 | struct w8001_touch_query touch; |
41c372dc | 388 | int error; |
3eb1aa43 | 389 | |
a6d38f88 | 390 | error = w8001_command(w8001, W8001_CMD_STOP, false); |
41c372dc DT |
391 | if (error) |
392 | return error; | |
3eb1aa43 | 393 | |
a6d38f88 | 394 | msleep(250); /* wait 250ms before querying the device */ |
3eb1aa43 | 395 | |
5fca6cac PC |
396 | dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); |
397 | strlcat(w8001->name, "Wacom Serial", sizeof(w8001->name)); | |
398 | ||
3512069e JG |
399 | __set_bit(INPUT_PROP_DIRECT, dev->propbit); |
400 | ||
a6d38f88 PC |
401 | /* penabled? */ |
402 | error = w8001_command(w8001, W8001_CMD_QUERY, true); | |
403 | if (!error) { | |
5fca6cac | 404 | __set_bit(BTN_TOUCH, dev->keybit); |
a6d38f88 PC |
405 | __set_bit(BTN_TOOL_PEN, dev->keybit); |
406 | __set_bit(BTN_TOOL_RUBBER, dev->keybit); | |
407 | __set_bit(BTN_STYLUS, dev->keybit); | |
408 | __set_bit(BTN_STYLUS2, dev->keybit); | |
5fca6cac PC |
409 | |
410 | parse_pen_data(w8001->response, &coord); | |
411 | w8001->max_pen_x = coord.x; | |
412 | w8001->max_pen_y = coord.y; | |
a6d38f88 PC |
413 | |
414 | input_set_abs_params(dev, ABS_X, 0, coord.x, 0, 0); | |
415 | input_set_abs_params(dev, ABS_Y, 0, coord.y, 0, 0); | |
28a1bc1c PC |
416 | input_abs_set_res(dev, ABS_X, W8001_PEN_RESOLUTION); |
417 | input_abs_set_res(dev, ABS_Y, W8001_PEN_RESOLUTION); | |
a6d38f88 PC |
418 | input_set_abs_params(dev, ABS_PRESSURE, 0, coord.pen_pressure, 0, 0); |
419 | if (coord.tilt_x && coord.tilt_y) { | |
420 | input_set_abs_params(dev, ABS_TILT_X, 0, coord.tilt_x, 0, 0); | |
421 | input_set_abs_params(dev, ABS_TILT_Y, 0, coord.tilt_y, 0, 0); | |
422 | } | |
5fca6cac PC |
423 | w8001->id = 0x90; |
424 | strlcat(w8001->name, " Penabled", sizeof(w8001->name)); | |
a6d38f88 | 425 | } |
3eb1aa43 | 426 | |
a6d38f88 | 427 | /* Touch enabled? */ |
aaba933e | 428 | error = w8001_command(w8001, W8001_CMD_TOUCHQUERY, true); |
a6d38f88 PC |
429 | |
430 | /* | |
431 | * Some non-touch devices may reply to the touch query. But their | |
432 | * second byte is empty, which indicates touch is not supported. | |
433 | */ | |
434 | if (!error && w8001->response[1]) { | |
5fca6cac PC |
435 | __set_bit(BTN_TOUCH, dev->keybit); |
436 | __set_bit(BTN_TOOL_FINGER, dev->keybit); | |
aaba933e PH |
437 | |
438 | parse_touchquery(w8001->response, &touch); | |
5fca6cac PC |
439 | w8001->max_touch_x = touch.x; |
440 | w8001->max_touch_y = touch.y; | |
441 | ||
5fca6cac | 442 | if (w8001->max_pen_x && w8001->max_pen_y) { |
28a1bc1c | 443 | /* if pen is supported scale to pen maximum */ |
5fca6cac PC |
444 | touch.x = w8001->max_pen_x; |
445 | touch.y = w8001->max_pen_y; | |
28a1bc1c | 446 | touch.panel_res = W8001_PEN_RESOLUTION; |
5fca6cac | 447 | } |
aaba933e | 448 | |
a6d38f88 PC |
449 | input_set_abs_params(dev, ABS_X, 0, touch.x, 0, 0); |
450 | input_set_abs_params(dev, ABS_Y, 0, touch.y, 0, 0); | |
28a1bc1c PC |
451 | input_abs_set_res(dev, ABS_X, touch.panel_res); |
452 | input_abs_set_res(dev, ABS_Y, touch.panel_res); | |
a6d38f88 | 453 | |
aaba933e PH |
454 | switch (touch.sensor_id) { |
455 | case 0: | |
456 | case 2: | |
457 | w8001->pktlen = W8001_PKTLEN_TOUCH93; | |
5fca6cac PC |
458 | w8001->id = 0x93; |
459 | strlcat(w8001->name, " 1FG", sizeof(w8001->name)); | |
aaba933e | 460 | break; |
5fca6cac | 461 | |
aaba933e PH |
462 | case 1: |
463 | case 3: | |
464 | case 4: | |
465 | w8001->pktlen = W8001_PKTLEN_TOUCH9A; | |
5fca6cac PC |
466 | strlcat(w8001->name, " 1FG", sizeof(w8001->name)); |
467 | w8001->id = 0x9a; | |
aaba933e | 468 | break; |
5fca6cac | 469 | |
aaba933e PH |
470 | case 5: |
471 | w8001->pktlen = W8001_PKTLEN_TOUCH2FG; | |
5e8b9140 | 472 | |
b4adbbef | 473 | input_mt_init_slots(dev, 2, 0); |
5e8b9140 PH |
474 | input_set_abs_params(dev, ABS_MT_POSITION_X, |
475 | 0, touch.x, 0, 0); | |
476 | input_set_abs_params(dev, ABS_MT_POSITION_Y, | |
477 | 0, touch.y, 0, 0); | |
478 | input_set_abs_params(dev, ABS_MT_TOOL_TYPE, | |
c5f4dec1 | 479 | 0, MT_TOOL_MAX, 0, 0); |
5fca6cac PC |
480 | |
481 | strlcat(w8001->name, " 2FG", sizeof(w8001->name)); | |
482 | if (w8001->max_pen_x && w8001->max_pen_y) | |
483 | w8001->id = 0xE3; | |
484 | else | |
485 | w8001->id = 0xE2; | |
aaba933e PH |
486 | break; |
487 | } | |
488 | } | |
489 | ||
5fca6cac PC |
490 | strlcat(w8001->name, " Touchscreen", sizeof(w8001->name)); |
491 | ||
e9496746 | 492 | return 0; |
3eb1aa43 JK |
493 | } |
494 | ||
495 | /* | |
496 | * w8001_disconnect() is the opposite of w8001_connect() | |
497 | */ | |
498 | ||
499 | static void w8001_disconnect(struct serio *serio) | |
500 | { | |
501 | struct w8001 *w8001 = serio_get_drvdata(serio); | |
502 | ||
3eb1aa43 | 503 | serio_close(serio); |
66fd9385 DT |
504 | |
505 | input_unregister_device(w8001->dev); | |
3eb1aa43 | 506 | kfree(w8001); |
66fd9385 DT |
507 | |
508 | serio_set_drvdata(serio, NULL); | |
3eb1aa43 JK |
509 | } |
510 | ||
511 | /* | |
512 | * w8001_connect() is the routine that is called when someone adds a | |
513 | * new serio device that supports the w8001 protocol and registers it as | |
514 | * an input device. | |
515 | */ | |
516 | ||
517 | static int w8001_connect(struct serio *serio, struct serio_driver *drv) | |
518 | { | |
519 | struct w8001 *w8001; | |
520 | struct input_dev *input_dev; | |
521 | int err; | |
522 | ||
523 | w8001 = kzalloc(sizeof(struct w8001), GFP_KERNEL); | |
524 | input_dev = input_allocate_device(); | |
525 | if (!w8001 || !input_dev) { | |
526 | err = -ENOMEM; | |
527 | goto fail1; | |
528 | } | |
529 | ||
530 | w8001->serio = serio; | |
3eb1aa43 | 531 | w8001->dev = input_dev; |
3eb1aa43 JK |
532 | init_completion(&w8001->cmd_done); |
533 | snprintf(w8001->phys, sizeof(w8001->phys), "%s/input0", serio->phys); | |
534 | ||
3eb1aa43 JK |
535 | serio_set_drvdata(serio, w8001); |
536 | err = serio_open(serio, drv); | |
537 | if (err) | |
538 | goto fail2; | |
539 | ||
41c372dc DT |
540 | err = w8001_setup(w8001); |
541 | if (err) | |
3eb1aa43 JK |
542 | goto fail3; |
543 | ||
5fca6cac PC |
544 | input_dev->name = w8001->name; |
545 | input_dev->phys = w8001->phys; | |
546 | input_dev->id.product = w8001->id; | |
547 | input_dev->id.bustype = BUS_RS232; | |
548 | input_dev->id.vendor = 0x056a; | |
549 | input_dev->id.version = 0x0100; | |
550 | input_dev->dev.parent = &serio->dev; | |
551 | ||
e9496746 DT |
552 | input_dev->open = w8001_open; |
553 | input_dev->close = w8001_close; | |
554 | ||
555 | input_set_drvdata(input_dev, w8001); | |
556 | ||
3eb1aa43 JK |
557 | err = input_register_device(w8001->dev); |
558 | if (err) | |
559 | goto fail3; | |
560 | ||
561 | return 0; | |
562 | ||
563 | fail3: | |
564 | serio_close(serio); | |
565 | fail2: | |
566 | serio_set_drvdata(serio, NULL); | |
567 | fail1: | |
568 | input_free_device(input_dev); | |
569 | kfree(w8001); | |
570 | return err; | |
571 | } | |
572 | ||
573 | static struct serio_device_id w8001_serio_ids[] = { | |
574 | { | |
575 | .type = SERIO_RS232, | |
576 | .proto = SERIO_W8001, | |
577 | .id = SERIO_ANY, | |
578 | .extra = SERIO_ANY, | |
579 | }, | |
580 | { 0 } | |
581 | }; | |
582 | ||
583 | MODULE_DEVICE_TABLE(serio, w8001_serio_ids); | |
584 | ||
585 | static struct serio_driver w8001_drv = { | |
586 | .driver = { | |
587 | .name = "w8001", | |
588 | }, | |
589 | .description = DRIVER_DESC, | |
590 | .id_table = w8001_serio_ids, | |
591 | .interrupt = w8001_interrupt, | |
592 | .connect = w8001_connect, | |
593 | .disconnect = w8001_disconnect, | |
594 | }; | |
595 | ||
65ac9f7a | 596 | module_serio_driver(w8001_drv); |