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ca2dcd40 BN |
1 | /* |
2 | * Bluetooth Wacom Tablet support | |
3 | * | |
4 | * Copyright (c) 1999 Andreas Gal | |
5 | * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz> | |
6 | * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc | |
7 | * Copyright (c) 2006-2007 Jiri Kosina | |
8 | * Copyright (c) 2007 Paul Walmsley | |
9 | * Copyright (c) 2008 Jiri Slaby <jirislaby@gmail.com> | |
10 | * Copyright (c) 2006 Andrew Zabolotny <zap@homelink.ru> | |
11 | * Copyright (c) 2009 Bastien Nocera <hadess@hadess.net> | |
12 | */ | |
13 | ||
14 | /* | |
15 | * This program is free software; you can redistribute it and/or modify it | |
16 | * under the terms of the GNU General Public License as published by the Free | |
17 | * Software Foundation; either version 2 of the License, or (at your option) | |
18 | * any later version. | |
19 | */ | |
20 | ||
21 | #include <linux/device.h> | |
22 | #include <linux/hid.h> | |
23 | #include <linux/module.h> | |
5a0e3ad6 | 24 | #include <linux/slab.h> |
59d2334a PF |
25 | #ifdef CONFIG_HID_WACOM_POWER_SUPPLY |
26 | #include <linux/power_supply.h> | |
27 | #endif | |
ca2dcd40 BN |
28 | |
29 | #include "hid-ids.h" | |
30 | ||
31 | struct wacom_data { | |
32 | __u16 tool; | |
33 | unsigned char butstate; | |
20a3ce7e | 34 | unsigned char high_speed; |
59d2334a PF |
35 | #ifdef CONFIG_HID_WACOM_POWER_SUPPLY |
36 | int battery_capacity; | |
37 | struct power_supply battery; | |
38 | struct power_supply ac; | |
39 | #endif | |
ca2dcd40 BN |
40 | }; |
41 | ||
59d2334a PF |
42 | #ifdef CONFIG_HID_WACOM_POWER_SUPPLY |
43 | /*percent of battery capacity, 0 means AC online*/ | |
44 | static unsigned short batcap[8] = { 1, 15, 25, 35, 50, 70, 100, 0 }; | |
45 | ||
46 | static enum power_supply_property wacom_battery_props[] = { | |
47 | POWER_SUPPLY_PROP_PRESENT, | |
48 | POWER_SUPPLY_PROP_CAPACITY | |
49 | }; | |
50 | ||
51 | static enum power_supply_property wacom_ac_props[] = { | |
52 | POWER_SUPPLY_PROP_PRESENT, | |
53 | POWER_SUPPLY_PROP_ONLINE | |
54 | }; | |
55 | ||
56 | static int wacom_battery_get_property(struct power_supply *psy, | |
57 | enum power_supply_property psp, | |
58 | union power_supply_propval *val) | |
59 | { | |
60 | struct wacom_data *wdata = container_of(psy, | |
61 | struct wacom_data, battery); | |
62 | int power_state = batcap[wdata->battery_capacity]; | |
63 | int ret = 0; | |
64 | ||
65 | switch (psp) { | |
66 | case POWER_SUPPLY_PROP_PRESENT: | |
67 | val->intval = 1; | |
68 | break; | |
69 | case POWER_SUPPLY_PROP_CAPACITY: | |
70 | /* show 100% battery capacity when charging */ | |
71 | if (power_state == 0) | |
72 | val->intval = 100; | |
73 | else | |
74 | val->intval = power_state; | |
75 | break; | |
76 | default: | |
77 | ret = -EINVAL; | |
78 | break; | |
79 | } | |
80 | return ret; | |
81 | } | |
82 | ||
83 | static int wacom_ac_get_property(struct power_supply *psy, | |
84 | enum power_supply_property psp, | |
85 | union power_supply_propval *val) | |
86 | { | |
87 | struct wacom_data *wdata = container_of(psy, struct wacom_data, ac); | |
88 | int power_state = batcap[wdata->battery_capacity]; | |
89 | int ret = 0; | |
90 | ||
91 | switch (psp) { | |
92 | case POWER_SUPPLY_PROP_PRESENT: | |
93 | /* fall through */ | |
94 | case POWER_SUPPLY_PROP_ONLINE: | |
95 | if (power_state == 0) | |
96 | val->intval = 1; | |
97 | else | |
98 | val->intval = 0; | |
99 | break; | |
100 | default: | |
101 | ret = -EINVAL; | |
102 | break; | |
103 | } | |
104 | return ret; | |
105 | } | |
106 | #endif | |
107 | ||
06c7c313 PF |
108 | static void wacom_poke(struct hid_device *hdev, u8 speed) |
109 | { | |
20a3ce7e | 110 | struct wacom_data *wdata = hid_get_drvdata(hdev); |
06c7c313 PF |
111 | int limit, ret; |
112 | char rep_data[2]; | |
113 | ||
114 | rep_data[0] = 0x03 ; rep_data[1] = 0x00; | |
115 | limit = 3; | |
116 | do { | |
117 | ret = hdev->hid_output_raw_report(hdev, rep_data, 2, | |
118 | HID_FEATURE_REPORT); | |
119 | } while (ret < 0 && limit-- > 0); | |
120 | ||
121 | if (ret >= 0) { | |
122 | if (speed == 0) | |
123 | rep_data[0] = 0x05; | |
124 | else | |
125 | rep_data[0] = 0x06; | |
126 | ||
127 | rep_data[1] = 0x00; | |
128 | limit = 3; | |
129 | do { | |
130 | ret = hdev->hid_output_raw_report(hdev, rep_data, 2, | |
131 | HID_FEATURE_REPORT); | |
132 | } while (ret < 0 && limit-- > 0); | |
133 | ||
20a3ce7e PF |
134 | if (ret >= 0) { |
135 | wdata->high_speed = speed; | |
06c7c313 | 136 | return; |
20a3ce7e | 137 | } |
06c7c313 PF |
138 | } |
139 | ||
140 | /* | |
141 | * Note that if the raw queries fail, it's not a hard failure and it | |
142 | * is safe to continue | |
143 | */ | |
144 | dev_warn(&hdev->dev, "failed to poke device, command %d, err %d\n", | |
145 | rep_data[0], ret); | |
146 | return; | |
147 | } | |
148 | ||
20a3ce7e PF |
149 | static ssize_t wacom_show_speed(struct device *dev, |
150 | struct device_attribute | |
151 | *attr, char *buf) | |
152 | { | |
153 | struct wacom_data *wdata = dev_get_drvdata(dev); | |
154 | ||
155 | return snprintf(buf, PAGE_SIZE, "%i\n", wdata->high_speed); | |
156 | } | |
157 | ||
158 | static ssize_t wacom_store_speed(struct device *dev, | |
159 | struct device_attribute *attr, | |
160 | const char *buf, size_t count) | |
161 | { | |
162 | struct hid_device *hdev = container_of(dev, struct hid_device, dev); | |
163 | int new_speed; | |
164 | ||
165 | if (sscanf(buf, "%1d", &new_speed ) != 1) | |
166 | return -EINVAL; | |
167 | ||
168 | if (new_speed == 0 || new_speed == 1) { | |
169 | wacom_poke(hdev, new_speed); | |
170 | return strnlen(buf, PAGE_SIZE); | |
171 | } else | |
172 | return -EINVAL; | |
173 | } | |
174 | ||
175 | static DEVICE_ATTR(speed, S_IRUGO | S_IWUGO, | |
176 | wacom_show_speed, wacom_store_speed); | |
177 | ||
ca2dcd40 BN |
178 | static int wacom_raw_event(struct hid_device *hdev, struct hid_report *report, |
179 | u8 *raw_data, int size) | |
180 | { | |
181 | struct wacom_data *wdata = hid_get_drvdata(hdev); | |
182 | struct hid_input *hidinput; | |
183 | struct input_dev *input; | |
184 | unsigned char *data = (unsigned char *) raw_data; | |
185 | int tool, x, y, rw; | |
186 | ||
187 | if (!(hdev->claimed & HID_CLAIMED_INPUT)) | |
188 | return 0; | |
189 | ||
190 | tool = 0; | |
191 | hidinput = list_entry(hdev->inputs.next, struct hid_input, list); | |
192 | input = hidinput->input; | |
193 | ||
194 | /* Check if this is a tablet report */ | |
195 | if (data[0] != 0x03) | |
196 | return 0; | |
197 | ||
198 | /* Get X & Y positions */ | |
199 | x = le16_to_cpu(*(__le16 *) &data[2]); | |
200 | y = le16_to_cpu(*(__le16 *) &data[4]); | |
201 | ||
202 | /* Get current tool identifier */ | |
203 | if (data[1] & 0x90) { /* If pen is in the in/active area */ | |
204 | switch ((data[1] >> 5) & 3) { | |
205 | case 0: /* Pen */ | |
206 | tool = BTN_TOOL_PEN; | |
207 | break; | |
208 | ||
209 | case 1: /* Rubber */ | |
210 | tool = BTN_TOOL_RUBBER; | |
211 | break; | |
212 | ||
213 | case 2: /* Mouse with wheel */ | |
214 | case 3: /* Mouse without wheel */ | |
215 | tool = BTN_TOOL_MOUSE; | |
216 | break; | |
217 | } | |
218 | ||
219 | /* Reset tool if out of active tablet area */ | |
220 | if (!(data[1] & 0x10)) | |
221 | tool = 0; | |
222 | } | |
223 | ||
224 | /* If tool changed, notify input subsystem */ | |
225 | if (wdata->tool != tool) { | |
226 | if (wdata->tool) { | |
227 | /* Completely reset old tool state */ | |
228 | if (wdata->tool == BTN_TOOL_MOUSE) { | |
229 | input_report_key(input, BTN_LEFT, 0); | |
230 | input_report_key(input, BTN_RIGHT, 0); | |
231 | input_report_key(input, BTN_MIDDLE, 0); | |
232 | input_report_abs(input, ABS_DISTANCE, | |
233 | input->absmax[ABS_DISTANCE]); | |
234 | } else { | |
235 | input_report_key(input, BTN_TOUCH, 0); | |
236 | input_report_key(input, BTN_STYLUS, 0); | |
237 | input_report_key(input, BTN_STYLUS2, 0); | |
238 | input_report_abs(input, ABS_PRESSURE, 0); | |
239 | } | |
240 | input_report_key(input, wdata->tool, 0); | |
241 | input_sync(input); | |
242 | } | |
243 | wdata->tool = tool; | |
244 | if (tool) | |
245 | input_report_key(input, tool, 1); | |
246 | } | |
247 | ||
248 | if (tool) { | |
249 | input_report_abs(input, ABS_X, x); | |
250 | input_report_abs(input, ABS_Y, y); | |
251 | ||
252 | switch ((data[1] >> 5) & 3) { | |
253 | case 2: /* Mouse with wheel */ | |
254 | input_report_key(input, BTN_MIDDLE, data[1] & 0x04); | |
255 | rw = (data[6] & 0x01) ? -1 : | |
256 | (data[6] & 0x02) ? 1 : 0; | |
257 | input_report_rel(input, REL_WHEEL, rw); | |
258 | /* fall through */ | |
259 | ||
260 | case 3: /* Mouse without wheel */ | |
261 | input_report_key(input, BTN_LEFT, data[1] & 0x01); | |
262 | input_report_key(input, BTN_RIGHT, data[1] & 0x02); | |
263 | /* Compute distance between mouse and tablet */ | |
264 | rw = 44 - (data[6] >> 2); | |
265 | if (rw < 0) | |
266 | rw = 0; | |
267 | else if (rw > 31) | |
268 | rw = 31; | |
269 | input_report_abs(input, ABS_DISTANCE, rw); | |
270 | break; | |
271 | ||
272 | default: | |
273 | input_report_abs(input, ABS_PRESSURE, | |
274 | data[6] | (((__u16) (data[1] & 0x08)) << 5)); | |
275 | input_report_key(input, BTN_TOUCH, data[1] & 0x01); | |
276 | input_report_key(input, BTN_STYLUS, data[1] & 0x02); | |
277 | input_report_key(input, BTN_STYLUS2, (tool == BTN_TOOL_PEN) && data[1] & 0x04); | |
278 | break; | |
279 | } | |
280 | ||
281 | input_sync(input); | |
282 | } | |
283 | ||
284 | /* Report the state of the two buttons at the top of the tablet | |
285 | * as two extra fingerpad keys (buttons 4 & 5). */ | |
286 | rw = data[7] & 0x03; | |
287 | if (rw != wdata->butstate) { | |
288 | wdata->butstate = rw; | |
289 | input_report_key(input, BTN_0, rw & 0x02); | |
290 | input_report_key(input, BTN_1, rw & 0x01); | |
0e253fdb | 291 | input_report_key(input, BTN_TOOL_FINGER, 0xf0); |
ca2dcd40 BN |
292 | input_event(input, EV_MSC, MSC_SERIAL, 0xf0); |
293 | input_sync(input); | |
294 | } | |
295 | ||
59d2334a PF |
296 | #ifdef CONFIG_HID_WACOM_POWER_SUPPLY |
297 | /* Store current battery capacity */ | |
298 | rw = (data[7] >> 2 & 0x07); | |
299 | if (rw != wdata->battery_capacity) | |
300 | wdata->battery_capacity = rw; | |
301 | #endif | |
ca2dcd40 BN |
302 | return 1; |
303 | } | |
304 | ||
305 | static int wacom_probe(struct hid_device *hdev, | |
306 | const struct hid_device_id *id) | |
307 | { | |
308 | struct hid_input *hidinput; | |
309 | struct input_dev *input; | |
310 | struct wacom_data *wdata; | |
311 | int ret; | |
312 | ||
313 | wdata = kzalloc(sizeof(*wdata), GFP_KERNEL); | |
314 | if (wdata == NULL) { | |
315 | dev_err(&hdev->dev, "can't alloc wacom descriptor\n"); | |
316 | return -ENOMEM; | |
317 | } | |
318 | ||
319 | hid_set_drvdata(hdev, wdata); | |
320 | ||
46a709b9 | 321 | /* Parse the HID report now */ |
ca2dcd40 BN |
322 | ret = hid_parse(hdev); |
323 | if (ret) { | |
324 | dev_err(&hdev->dev, "parse failed\n"); | |
325 | goto err_free; | |
326 | } | |
327 | ||
328 | ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); | |
329 | if (ret) { | |
330 | dev_err(&hdev->dev, "hw start failed\n"); | |
331 | goto err_free; | |
332 | } | |
333 | ||
20a3ce7e PF |
334 | ret = device_create_file(&hdev->dev, &dev_attr_speed); |
335 | if (ret) | |
336 | dev_warn(&hdev->dev, | |
337 | "can't create sysfs speed attribute err: %d\n", ret); | |
342f31e8 | 338 | |
06c7c313 PF |
339 | /* Set Wacom mode 2 with high reporting speed */ |
340 | wacom_poke(hdev, 1); | |
46a709b9 | 341 | |
59d2334a PF |
342 | #ifdef CONFIG_HID_WACOM_POWER_SUPPLY |
343 | wdata->battery.properties = wacom_battery_props; | |
344 | wdata->battery.num_properties = ARRAY_SIZE(wacom_battery_props); | |
345 | wdata->battery.get_property = wacom_battery_get_property; | |
346 | wdata->battery.name = "wacom_battery"; | |
347 | wdata->battery.type = POWER_SUPPLY_TYPE_BATTERY; | |
348 | wdata->battery.use_for_apm = 0; | |
46a709b9 | 349 | |
59d2334a PF |
350 | ret = power_supply_register(&hdev->dev, &wdata->battery); |
351 | if (ret) { | |
352 | dev_warn(&hdev->dev, | |
353 | "can't create sysfs battery attribute, err: %d\n", ret); | |
354 | /* | |
355 | * battery attribute is not critical for the tablet, but if it | |
356 | * failed then there is no need to create ac attribute | |
357 | */ | |
358 | goto move_on; | |
359 | } | |
360 | ||
361 | wdata->ac.properties = wacom_ac_props; | |
362 | wdata->ac.num_properties = ARRAY_SIZE(wacom_ac_props); | |
363 | wdata->ac.get_property = wacom_ac_get_property; | |
364 | wdata->ac.name = "wacom_ac"; | |
365 | wdata->ac.type = POWER_SUPPLY_TYPE_MAINS; | |
366 | wdata->ac.use_for_apm = 0; | |
367 | ||
368 | ret = power_supply_register(&hdev->dev, &wdata->ac); | |
369 | if (ret) { | |
370 | dev_warn(&hdev->dev, | |
371 | "can't create ac battery attribute, err: %d\n", ret); | |
372 | /* | |
373 | * ac attribute is not critical for the tablet, but if it | |
374 | * failed then we don't want to battery attribute to exist | |
375 | */ | |
376 | power_supply_unregister(&wdata->battery); | |
377 | } | |
378 | ||
379 | move_on: | |
380 | #endif | |
ca2dcd40 BN |
381 | hidinput = list_entry(hdev->inputs.next, struct hid_input, list); |
382 | input = hidinput->input; | |
383 | ||
384 | /* Basics */ | |
385 | input->evbit[0] |= BIT(EV_KEY) | BIT(EV_ABS) | BIT(EV_REL); | |
386 | input->absbit[0] |= BIT(ABS_X) | BIT(ABS_Y) | | |
387 | BIT(ABS_PRESSURE) | BIT(ABS_DISTANCE); | |
388 | input->relbit[0] |= BIT(REL_WHEEL); | |
389 | set_bit(BTN_TOOL_PEN, input->keybit); | |
390 | set_bit(BTN_TOUCH, input->keybit); | |
391 | set_bit(BTN_STYLUS, input->keybit); | |
392 | set_bit(BTN_STYLUS2, input->keybit); | |
393 | set_bit(BTN_LEFT, input->keybit); | |
394 | set_bit(BTN_RIGHT, input->keybit); | |
395 | set_bit(BTN_MIDDLE, input->keybit); | |
396 | ||
397 | /* Pad */ | |
398 | input->evbit[0] |= BIT(EV_MSC); | |
399 | input->mscbit[0] |= BIT(MSC_SERIAL); | |
d01799b2 PF |
400 | set_bit(BTN_0, input->keybit); |
401 | set_bit(BTN_1, input->keybit); | |
402 | set_bit(BTN_TOOL_FINGER, input->keybit); | |
ca2dcd40 BN |
403 | |
404 | /* Distance, rubber and mouse */ | |
405 | input->absbit[0] |= BIT(ABS_DISTANCE); | |
406 | set_bit(BTN_TOOL_RUBBER, input->keybit); | |
407 | set_bit(BTN_TOOL_MOUSE, input->keybit); | |
408 | ||
409 | input->absmax[ABS_PRESSURE] = 511; | |
410 | input->absmax[ABS_DISTANCE] = 32; | |
411 | ||
412 | input->absmax[ABS_X] = 16704; | |
413 | input->absmax[ABS_Y] = 12064; | |
414 | input->absfuzz[ABS_X] = 4; | |
415 | input->absfuzz[ABS_Y] = 4; | |
416 | ||
417 | return 0; | |
418 | err_free: | |
419 | kfree(wdata); | |
420 | return ret; | |
421 | } | |
422 | ||
423 | static void wacom_remove(struct hid_device *hdev) | |
424 | { | |
59d2334a PF |
425 | #ifdef CONFIG_HID_WACOM_POWER_SUPPLY |
426 | struct wacom_data *wdata = hid_get_drvdata(hdev); | |
427 | #endif | |
ca2dcd40 | 428 | hid_hw_stop(hdev); |
59d2334a PF |
429 | |
430 | #ifdef CONFIG_HID_WACOM_POWER_SUPPLY | |
431 | power_supply_unregister(&wdata->battery); | |
432 | power_supply_unregister(&wdata->ac); | |
433 | #endif | |
ca2dcd40 BN |
434 | kfree(hid_get_drvdata(hdev)); |
435 | } | |
436 | ||
437 | static const struct hid_device_id wacom_devices[] = { | |
438 | { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH) }, | |
ed9eac5b | 439 | { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH) }, |
ca2dcd40 BN |
440 | { } |
441 | }; | |
442 | MODULE_DEVICE_TABLE(hid, wacom_devices); | |
443 | ||
444 | static struct hid_driver wacom_driver = { | |
445 | .name = "wacom", | |
446 | .id_table = wacom_devices, | |
447 | .probe = wacom_probe, | |
448 | .remove = wacom_remove, | |
449 | .raw_event = wacom_raw_event, | |
450 | }; | |
451 | ||
a24f423b | 452 | static int __init wacom_init(void) |
ca2dcd40 BN |
453 | { |
454 | int ret; | |
455 | ||
456 | ret = hid_register_driver(&wacom_driver); | |
457 | if (ret) | |
458 | printk(KERN_ERR "can't register wacom driver\n"); | |
ca2dcd40 BN |
459 | return ret; |
460 | } | |
461 | ||
a24f423b | 462 | static void __exit wacom_exit(void) |
ca2dcd40 BN |
463 | { |
464 | hid_unregister_driver(&wacom_driver); | |
465 | } | |
466 | ||
467 | module_init(wacom_init); | |
468 | module_exit(wacom_exit); | |
469 | MODULE_LICENSE("GPL"); | |
470 |