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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 | ||
4291ee30 JP |
21 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
22 | ||
ca2dcd40 BN |
23 | #include <linux/device.h> |
24 | #include <linux/hid.h> | |
25 | #include <linux/module.h> | |
5a0e3ad6 | 26 | #include <linux/slab.h> |
59d2334a PF |
27 | #ifdef CONFIG_HID_WACOM_POWER_SUPPLY |
28 | #include <linux/power_supply.h> | |
29 | #endif | |
ca2dcd40 BN |
30 | |
31 | #include "hid-ids.h" | |
32 | ||
33 | struct wacom_data { | |
34 | __u16 tool; | |
35 | unsigned char butstate; | |
20a3ce7e | 36 | unsigned char high_speed; |
59d2334a PF |
37 | #ifdef CONFIG_HID_WACOM_POWER_SUPPLY |
38 | int battery_capacity; | |
39 | struct power_supply battery; | |
40 | struct power_supply ac; | |
41 | #endif | |
ca2dcd40 BN |
42 | }; |
43 | ||
59d2334a PF |
44 | #ifdef CONFIG_HID_WACOM_POWER_SUPPLY |
45 | /*percent of battery capacity, 0 means AC online*/ | |
46 | static unsigned short batcap[8] = { 1, 15, 25, 35, 50, 70, 100, 0 }; | |
47 | ||
48 | static enum power_supply_property wacom_battery_props[] = { | |
49 | POWER_SUPPLY_PROP_PRESENT, | |
50 | POWER_SUPPLY_PROP_CAPACITY | |
51 | }; | |
52 | ||
53 | static enum power_supply_property wacom_ac_props[] = { | |
54 | POWER_SUPPLY_PROP_PRESENT, | |
55 | POWER_SUPPLY_PROP_ONLINE | |
56 | }; | |
57 | ||
58 | static int wacom_battery_get_property(struct power_supply *psy, | |
59 | enum power_supply_property psp, | |
60 | union power_supply_propval *val) | |
61 | { | |
62 | struct wacom_data *wdata = container_of(psy, | |
63 | struct wacom_data, battery); | |
64 | int power_state = batcap[wdata->battery_capacity]; | |
65 | int ret = 0; | |
66 | ||
67 | switch (psp) { | |
68 | case POWER_SUPPLY_PROP_PRESENT: | |
69 | val->intval = 1; | |
70 | break; | |
71 | case POWER_SUPPLY_PROP_CAPACITY: | |
72 | /* show 100% battery capacity when charging */ | |
73 | if (power_state == 0) | |
74 | val->intval = 100; | |
75 | else | |
76 | val->intval = power_state; | |
77 | break; | |
78 | default: | |
79 | ret = -EINVAL; | |
80 | break; | |
81 | } | |
82 | return ret; | |
83 | } | |
84 | ||
85 | static int wacom_ac_get_property(struct power_supply *psy, | |
86 | enum power_supply_property psp, | |
87 | union power_supply_propval *val) | |
88 | { | |
89 | struct wacom_data *wdata = container_of(psy, struct wacom_data, ac); | |
90 | int power_state = batcap[wdata->battery_capacity]; | |
91 | int ret = 0; | |
92 | ||
93 | switch (psp) { | |
94 | case POWER_SUPPLY_PROP_PRESENT: | |
95 | /* fall through */ | |
96 | case POWER_SUPPLY_PROP_ONLINE: | |
97 | if (power_state == 0) | |
98 | val->intval = 1; | |
99 | else | |
100 | val->intval = 0; | |
101 | break; | |
102 | default: | |
103 | ret = -EINVAL; | |
104 | break; | |
105 | } | |
106 | return ret; | |
107 | } | |
108 | #endif | |
109 | ||
06c7c313 PF |
110 | static void wacom_poke(struct hid_device *hdev, u8 speed) |
111 | { | |
20a3ce7e | 112 | struct wacom_data *wdata = hid_get_drvdata(hdev); |
06c7c313 PF |
113 | int limit, ret; |
114 | char rep_data[2]; | |
115 | ||
116 | rep_data[0] = 0x03 ; rep_data[1] = 0x00; | |
117 | limit = 3; | |
118 | do { | |
119 | ret = hdev->hid_output_raw_report(hdev, rep_data, 2, | |
120 | HID_FEATURE_REPORT); | |
121 | } while (ret < 0 && limit-- > 0); | |
122 | ||
123 | if (ret >= 0) { | |
124 | if (speed == 0) | |
125 | rep_data[0] = 0x05; | |
126 | else | |
127 | rep_data[0] = 0x06; | |
128 | ||
129 | rep_data[1] = 0x00; | |
130 | limit = 3; | |
131 | do { | |
132 | ret = hdev->hid_output_raw_report(hdev, rep_data, 2, | |
133 | HID_FEATURE_REPORT); | |
134 | } while (ret < 0 && limit-- > 0); | |
135 | ||
20a3ce7e PF |
136 | if (ret >= 0) { |
137 | wdata->high_speed = speed; | |
06c7c313 | 138 | return; |
20a3ce7e | 139 | } |
06c7c313 PF |
140 | } |
141 | ||
142 | /* | |
143 | * Note that if the raw queries fail, it's not a hard failure and it | |
144 | * is safe to continue | |
145 | */ | |
4291ee30 JP |
146 | hid_warn(hdev, "failed to poke device, command %d, err %d\n", |
147 | rep_data[0], ret); | |
06c7c313 PF |
148 | return; |
149 | } | |
150 | ||
20a3ce7e PF |
151 | static ssize_t wacom_show_speed(struct device *dev, |
152 | struct device_attribute | |
153 | *attr, char *buf) | |
154 | { | |
155 | struct wacom_data *wdata = dev_get_drvdata(dev); | |
156 | ||
157 | return snprintf(buf, PAGE_SIZE, "%i\n", wdata->high_speed); | |
158 | } | |
159 | ||
160 | static ssize_t wacom_store_speed(struct device *dev, | |
161 | struct device_attribute *attr, | |
162 | const char *buf, size_t count) | |
163 | { | |
164 | struct hid_device *hdev = container_of(dev, struct hid_device, dev); | |
165 | int new_speed; | |
166 | ||
167 | if (sscanf(buf, "%1d", &new_speed ) != 1) | |
168 | return -EINVAL; | |
169 | ||
170 | if (new_speed == 0 || new_speed == 1) { | |
171 | wacom_poke(hdev, new_speed); | |
172 | return strnlen(buf, PAGE_SIZE); | |
173 | } else | |
174 | return -EINVAL; | |
175 | } | |
176 | ||
edd2126a | 177 | static DEVICE_ATTR(speed, S_IRUGO | S_IWUSR | S_IWGRP, |
20a3ce7e PF |
178 | wacom_show_speed, wacom_store_speed); |
179 | ||
ca2dcd40 BN |
180 | static int wacom_raw_event(struct hid_device *hdev, struct hid_report *report, |
181 | u8 *raw_data, int size) | |
182 | { | |
183 | struct wacom_data *wdata = hid_get_drvdata(hdev); | |
184 | struct hid_input *hidinput; | |
185 | struct input_dev *input; | |
186 | unsigned char *data = (unsigned char *) raw_data; | |
187 | int tool, x, y, rw; | |
188 | ||
189 | if (!(hdev->claimed & HID_CLAIMED_INPUT)) | |
190 | return 0; | |
191 | ||
192 | tool = 0; | |
193 | hidinput = list_entry(hdev->inputs.next, struct hid_input, list); | |
194 | input = hidinput->input; | |
195 | ||
196 | /* Check if this is a tablet report */ | |
197 | if (data[0] != 0x03) | |
198 | return 0; | |
199 | ||
200 | /* Get X & Y positions */ | |
201 | x = le16_to_cpu(*(__le16 *) &data[2]); | |
202 | y = le16_to_cpu(*(__le16 *) &data[4]); | |
203 | ||
204 | /* Get current tool identifier */ | |
205 | if (data[1] & 0x90) { /* If pen is in the in/active area */ | |
206 | switch ((data[1] >> 5) & 3) { | |
207 | case 0: /* Pen */ | |
208 | tool = BTN_TOOL_PEN; | |
209 | break; | |
210 | ||
211 | case 1: /* Rubber */ | |
212 | tool = BTN_TOOL_RUBBER; | |
213 | break; | |
214 | ||
215 | case 2: /* Mouse with wheel */ | |
216 | case 3: /* Mouse without wheel */ | |
217 | tool = BTN_TOOL_MOUSE; | |
218 | break; | |
219 | } | |
220 | ||
221 | /* Reset tool if out of active tablet area */ | |
222 | if (!(data[1] & 0x10)) | |
223 | tool = 0; | |
224 | } | |
225 | ||
226 | /* If tool changed, notify input subsystem */ | |
227 | if (wdata->tool != tool) { | |
228 | if (wdata->tool) { | |
229 | /* Completely reset old tool state */ | |
230 | if (wdata->tool == BTN_TOOL_MOUSE) { | |
231 | input_report_key(input, BTN_LEFT, 0); | |
232 | input_report_key(input, BTN_RIGHT, 0); | |
233 | input_report_key(input, BTN_MIDDLE, 0); | |
234 | input_report_abs(input, ABS_DISTANCE, | |
987a6c02 | 235 | input_abs_get_max(input, ABS_DISTANCE)); |
ca2dcd40 BN |
236 | } else { |
237 | input_report_key(input, BTN_TOUCH, 0); | |
238 | input_report_key(input, BTN_STYLUS, 0); | |
239 | input_report_key(input, BTN_STYLUS2, 0); | |
240 | input_report_abs(input, ABS_PRESSURE, 0); | |
241 | } | |
242 | input_report_key(input, wdata->tool, 0); | |
243 | input_sync(input); | |
244 | } | |
245 | wdata->tool = tool; | |
246 | if (tool) | |
247 | input_report_key(input, tool, 1); | |
248 | } | |
249 | ||
250 | if (tool) { | |
251 | input_report_abs(input, ABS_X, x); | |
252 | input_report_abs(input, ABS_Y, y); | |
253 | ||
254 | switch ((data[1] >> 5) & 3) { | |
255 | case 2: /* Mouse with wheel */ | |
256 | input_report_key(input, BTN_MIDDLE, data[1] & 0x04); | |
257 | rw = (data[6] & 0x01) ? -1 : | |
258 | (data[6] & 0x02) ? 1 : 0; | |
259 | input_report_rel(input, REL_WHEEL, rw); | |
260 | /* fall through */ | |
261 | ||
262 | case 3: /* Mouse without wheel */ | |
263 | input_report_key(input, BTN_LEFT, data[1] & 0x01); | |
264 | input_report_key(input, BTN_RIGHT, data[1] & 0x02); | |
265 | /* Compute distance between mouse and tablet */ | |
266 | rw = 44 - (data[6] >> 2); | |
267 | if (rw < 0) | |
268 | rw = 0; | |
269 | else if (rw > 31) | |
270 | rw = 31; | |
271 | input_report_abs(input, ABS_DISTANCE, rw); | |
272 | break; | |
273 | ||
274 | default: | |
275 | input_report_abs(input, ABS_PRESSURE, | |
276 | data[6] | (((__u16) (data[1] & 0x08)) << 5)); | |
277 | input_report_key(input, BTN_TOUCH, data[1] & 0x01); | |
278 | input_report_key(input, BTN_STYLUS, data[1] & 0x02); | |
279 | input_report_key(input, BTN_STYLUS2, (tool == BTN_TOOL_PEN) && data[1] & 0x04); | |
280 | break; | |
281 | } | |
282 | ||
283 | input_sync(input); | |
284 | } | |
285 | ||
286 | /* Report the state of the two buttons at the top of the tablet | |
287 | * as two extra fingerpad keys (buttons 4 & 5). */ | |
288 | rw = data[7] & 0x03; | |
289 | if (rw != wdata->butstate) { | |
290 | wdata->butstate = rw; | |
291 | input_report_key(input, BTN_0, rw & 0x02); | |
292 | input_report_key(input, BTN_1, rw & 0x01); | |
0e253fdb | 293 | input_report_key(input, BTN_TOOL_FINGER, 0xf0); |
ca2dcd40 BN |
294 | input_event(input, EV_MSC, MSC_SERIAL, 0xf0); |
295 | input_sync(input); | |
296 | } | |
297 | ||
59d2334a PF |
298 | #ifdef CONFIG_HID_WACOM_POWER_SUPPLY |
299 | /* Store current battery capacity */ | |
300 | rw = (data[7] >> 2 & 0x07); | |
301 | if (rw != wdata->battery_capacity) | |
302 | wdata->battery_capacity = rw; | |
303 | #endif | |
ca2dcd40 BN |
304 | return 1; |
305 | } | |
306 | ||
307 | static int wacom_probe(struct hid_device *hdev, | |
308 | const struct hid_device_id *id) | |
309 | { | |
310 | struct hid_input *hidinput; | |
311 | struct input_dev *input; | |
312 | struct wacom_data *wdata; | |
313 | int ret; | |
314 | ||
315 | wdata = kzalloc(sizeof(*wdata), GFP_KERNEL); | |
316 | if (wdata == NULL) { | |
4291ee30 | 317 | hid_err(hdev, "can't alloc wacom descriptor\n"); |
ca2dcd40 BN |
318 | return -ENOMEM; |
319 | } | |
320 | ||
321 | hid_set_drvdata(hdev, wdata); | |
322 | ||
46a709b9 | 323 | /* Parse the HID report now */ |
ca2dcd40 BN |
324 | ret = hid_parse(hdev); |
325 | if (ret) { | |
4291ee30 | 326 | hid_err(hdev, "parse failed\n"); |
ca2dcd40 BN |
327 | goto err_free; |
328 | } | |
329 | ||
330 | ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); | |
331 | if (ret) { | |
4291ee30 | 332 | hid_err(hdev, "hw start failed\n"); |
ca2dcd40 BN |
333 | goto err_free; |
334 | } | |
335 | ||
20a3ce7e PF |
336 | ret = device_create_file(&hdev->dev, &dev_attr_speed); |
337 | if (ret) | |
4291ee30 JP |
338 | hid_warn(hdev, |
339 | "can't create sysfs speed attribute err: %d\n", ret); | |
342f31e8 | 340 | |
06c7c313 PF |
341 | /* Set Wacom mode 2 with high reporting speed */ |
342 | wacom_poke(hdev, 1); | |
46a709b9 | 343 | |
59d2334a PF |
344 | #ifdef CONFIG_HID_WACOM_POWER_SUPPLY |
345 | wdata->battery.properties = wacom_battery_props; | |
346 | wdata->battery.num_properties = ARRAY_SIZE(wacom_battery_props); | |
347 | wdata->battery.get_property = wacom_battery_get_property; | |
348 | wdata->battery.name = "wacom_battery"; | |
349 | wdata->battery.type = POWER_SUPPLY_TYPE_BATTERY; | |
350 | wdata->battery.use_for_apm = 0; | |
46a709b9 | 351 | |
59d2334a PF |
352 | ret = power_supply_register(&hdev->dev, &wdata->battery); |
353 | if (ret) { | |
4291ee30 JP |
354 | hid_warn(hdev, "can't create sysfs battery attribute, err: %d\n", |
355 | ret); | |
59d2334a PF |
356 | /* |
357 | * battery attribute is not critical for the tablet, but if it | |
358 | * failed then there is no need to create ac attribute | |
359 | */ | |
360 | goto move_on; | |
361 | } | |
362 | ||
363 | wdata->ac.properties = wacom_ac_props; | |
364 | wdata->ac.num_properties = ARRAY_SIZE(wacom_ac_props); | |
365 | wdata->ac.get_property = wacom_ac_get_property; | |
366 | wdata->ac.name = "wacom_ac"; | |
367 | wdata->ac.type = POWER_SUPPLY_TYPE_MAINS; | |
368 | wdata->ac.use_for_apm = 0; | |
369 | ||
370 | ret = power_supply_register(&hdev->dev, &wdata->ac); | |
371 | if (ret) { | |
4291ee30 JP |
372 | hid_warn(hdev, |
373 | "can't create ac battery attribute, err: %d\n", ret); | |
59d2334a PF |
374 | /* |
375 | * ac attribute is not critical for the tablet, but if it | |
376 | * failed then we don't want to battery attribute to exist | |
377 | */ | |
378 | power_supply_unregister(&wdata->battery); | |
379 | } | |
380 | ||
381 | move_on: | |
382 | #endif | |
ca2dcd40 BN |
383 | hidinput = list_entry(hdev->inputs.next, struct hid_input, list); |
384 | input = hidinput->input; | |
385 | ||
386 | /* Basics */ | |
387 | input->evbit[0] |= BIT(EV_KEY) | BIT(EV_ABS) | BIT(EV_REL); | |
987a6c02 DM |
388 | |
389 | __set_bit(REL_WHEEL, input->relbit); | |
390 | ||
391 | __set_bit(BTN_TOOL_PEN, input->keybit); | |
392 | __set_bit(BTN_TOUCH, input->keybit); | |
393 | __set_bit(BTN_STYLUS, input->keybit); | |
394 | __set_bit(BTN_STYLUS2, input->keybit); | |
395 | __set_bit(BTN_LEFT, input->keybit); | |
396 | __set_bit(BTN_RIGHT, input->keybit); | |
397 | __set_bit(BTN_MIDDLE, input->keybit); | |
ca2dcd40 BN |
398 | |
399 | /* Pad */ | |
400 | input->evbit[0] |= BIT(EV_MSC); | |
ca2dcd40 | 401 | |
987a6c02 | 402 | __set_bit(MSC_SERIAL, input->mscbit); |
ca2dcd40 | 403 | |
987a6c02 DM |
404 | __set_bit(BTN_0, input->keybit); |
405 | __set_bit(BTN_1, input->keybit); | |
406 | __set_bit(BTN_TOOL_FINGER, input->keybit); | |
ca2dcd40 | 407 | |
987a6c02 DM |
408 | /* Distance, rubber and mouse */ |
409 | __set_bit(BTN_TOOL_RUBBER, input->keybit); | |
410 | __set_bit(BTN_TOOL_MOUSE, input->keybit); | |
411 | ||
412 | input_set_abs_params(input, ABS_X, 0, 16704, 4, 0); | |
413 | input_set_abs_params(input, ABS_Y, 0, 12064, 4, 0); | |
414 | input_set_abs_params(input, ABS_PRESSURE, 0, 511, 0, 0); | |
415 | input_set_abs_params(input, ABS_DISTANCE, 0, 32, 0, 0); | |
ca2dcd40 BN |
416 | |
417 | return 0; | |
987a6c02 | 418 | |
ca2dcd40 BN |
419 | err_free: |
420 | kfree(wdata); | |
421 | return ret; | |
422 | } | |
423 | ||
424 | static void wacom_remove(struct hid_device *hdev) | |
425 | { | |
59d2334a PF |
426 | #ifdef CONFIG_HID_WACOM_POWER_SUPPLY |
427 | struct wacom_data *wdata = hid_get_drvdata(hdev); | |
428 | #endif | |
ca2dcd40 | 429 | hid_hw_stop(hdev); |
59d2334a PF |
430 | |
431 | #ifdef CONFIG_HID_WACOM_POWER_SUPPLY | |
432 | power_supply_unregister(&wdata->battery); | |
433 | power_supply_unregister(&wdata->ac); | |
434 | #endif | |
ca2dcd40 BN |
435 | kfree(hid_get_drvdata(hdev)); |
436 | } | |
437 | ||
438 | static const struct hid_device_id wacom_devices[] = { | |
439 | { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH) }, | |
d5e0a06f | 440 | |
ca2dcd40 BN |
441 | { } |
442 | }; | |
443 | MODULE_DEVICE_TABLE(hid, wacom_devices); | |
444 | ||
445 | static struct hid_driver wacom_driver = { | |
446 | .name = "wacom", | |
447 | .id_table = wacom_devices, | |
448 | .probe = wacom_probe, | |
449 | .remove = wacom_remove, | |
450 | .raw_event = wacom_raw_event, | |
451 | }; | |
452 | ||
a24f423b | 453 | static int __init wacom_init(void) |
ca2dcd40 BN |
454 | { |
455 | int ret; | |
456 | ||
457 | ret = hid_register_driver(&wacom_driver); | |
458 | if (ret) | |
4291ee30 | 459 | pr_err("can't register wacom driver\n"); |
ca2dcd40 BN |
460 | return ret; |
461 | } | |
462 | ||
a24f423b | 463 | static void __exit wacom_exit(void) |
ca2dcd40 BN |
464 | { |
465 | hid_unregister_driver(&wacom_driver); | |
466 | } | |
467 | ||
468 | module_init(wacom_init); | |
469 | module_exit(wacom_exit); | |
470 | MODULE_LICENSE("GPL"); | |
471 |