blob: 17bb88f782b69b5cd0a44df7927742f412c6d1d0 [file] [log] [blame]
Bastien Noceraca2dcd42009-05-11 17:18:12 +02001/*
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
Joe Perches4291ee32010-12-09 19:29:03 -080021#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
22
Bastien Noceraca2dcd42009-05-11 17:18:12 +020023#include <linux/device.h>
24#include <linux/hid.h>
25#include <linux/module.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090026#include <linux/slab.h>
Przemo Firszt59d23342010-03-15 19:16:23 +000027#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
28#include <linux/power_supply.h>
29#endif
Bastien Noceraca2dcd42009-05-11 17:18:12 +020030
31#include "hid-ids.h"
32
33struct wacom_data {
34 __u16 tool;
35 unsigned char butstate;
Przemo Firszt20a3ce72010-03-18 14:34:34 +000036 unsigned char high_speed;
Przemo Firszt59d23342010-03-15 19:16:23 +000037#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
38 int battery_capacity;
39 struct power_supply battery;
40 struct power_supply ac;
41#endif
Bastien Noceraca2dcd42009-05-11 17:18:12 +020042};
43
Przemo Firszt59d23342010-03-15 19:16:23 +000044#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
45/*percent of battery capacity, 0 means AC online*/
46static unsigned short batcap[8] = { 1, 15, 25, 35, 50, 70, 100, 0 };
47
48static enum power_supply_property wacom_battery_props[] = {
49 POWER_SUPPLY_PROP_PRESENT,
50 POWER_SUPPLY_PROP_CAPACITY
51};
52
53static enum power_supply_property wacom_ac_props[] = {
54 POWER_SUPPLY_PROP_PRESENT,
55 POWER_SUPPLY_PROP_ONLINE
56};
57
58static 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
85static 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
Przemo Firszt06c7c312010-03-22 09:55:04 +0100110static void wacom_poke(struct hid_device *hdev, u8 speed)
111{
Przemo Firszt20a3ce72010-03-18 14:34:34 +0000112 struct wacom_data *wdata = hid_get_drvdata(hdev);
Przemo Firszt06c7c312010-03-22 09:55:04 +0100113 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
Przemo Firszt20a3ce72010-03-18 14:34:34 +0000136 if (ret >= 0) {
137 wdata->high_speed = speed;
Przemo Firszt06c7c312010-03-22 09:55:04 +0100138 return;
Przemo Firszt20a3ce72010-03-18 14:34:34 +0000139 }
Przemo Firszt06c7c312010-03-22 09:55:04 +0100140 }
141
142 /*
143 * Note that if the raw queries fail, it's not a hard failure and it
144 * is safe to continue
145 */
Joe Perches4291ee32010-12-09 19:29:03 -0800146 hid_warn(hdev, "failed to poke device, command %d, err %d\n",
147 rep_data[0], ret);
Przemo Firszt06c7c312010-03-22 09:55:04 +0100148 return;
149}
150
Przemo Firszt20a3ce72010-03-18 14:34:34 +0000151static 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
160static 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
Jiri Kosinaedd21262010-11-18 16:28:43 +0100177static DEVICE_ATTR(speed, S_IRUGO | S_IWUSR | S_IWGRP,
Przemo Firszt20a3ce72010-03-18 14:34:34 +0000178 wacom_show_speed, wacom_store_speed);
179
Bastien Noceraca2dcd42009-05-11 17:18:12 +0200180static 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,
Daniel Mack987a6c02010-08-02 20:15:17 -0700235 input_abs_get_max(input, ABS_DISTANCE));
Bastien Noceraca2dcd42009-05-11 17:18:12 +0200236 } 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);
Przemo Firszt0e253fd2010-01-09 15:20:03 +0100293 input_report_key(input, BTN_TOOL_FINGER, 0xf0);
Bastien Noceraca2dcd42009-05-11 17:18:12 +0200294 input_event(input, EV_MSC, MSC_SERIAL, 0xf0);
295 input_sync(input);
296 }
297
Przemo Firszt59d23342010-03-15 19:16:23 +0000298#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
Bastien Noceraca2dcd42009-05-11 17:18:12 +0200304 return 1;
305}
306
David Herrmann3797ef62011-10-08 23:20:17 +0200307static int wacom_input_mapped(struct hid_device *hdev, struct hid_input *hi,
308 struct hid_field *field, struct hid_usage *usage, unsigned long **bit,
309 int *max)
310{
311 struct input_dev *input = hi->input;
312
Jiri Kosinaf6f12422011-10-25 09:58:12 +0200313 __set_bit(INPUT_PROP_POINTER, input->propbit);
314
David Herrmann3797ef62011-10-08 23:20:17 +0200315 /* Basics */
316 input->evbit[0] |= BIT(EV_KEY) | BIT(EV_ABS) | BIT(EV_REL);
317
318 __set_bit(REL_WHEEL, input->relbit);
319
320 __set_bit(BTN_TOOL_PEN, input->keybit);
321 __set_bit(BTN_TOUCH, input->keybit);
322 __set_bit(BTN_STYLUS, input->keybit);
323 __set_bit(BTN_STYLUS2, input->keybit);
324 __set_bit(BTN_LEFT, input->keybit);
325 __set_bit(BTN_RIGHT, input->keybit);
326 __set_bit(BTN_MIDDLE, input->keybit);
327
328 /* Pad */
329 input->evbit[0] |= BIT(EV_MSC);
330
331 __set_bit(MSC_SERIAL, input->mscbit);
332
333 __set_bit(BTN_0, input->keybit);
334 __set_bit(BTN_1, input->keybit);
335 __set_bit(BTN_TOOL_FINGER, input->keybit);
336
337 /* Distance, rubber and mouse */
338 __set_bit(BTN_TOOL_RUBBER, input->keybit);
339 __set_bit(BTN_TOOL_MOUSE, input->keybit);
340
341 input_set_abs_params(input, ABS_X, 0, 16704, 4, 0);
342 input_set_abs_params(input, ABS_Y, 0, 12064, 4, 0);
343 input_set_abs_params(input, ABS_PRESSURE, 0, 511, 0, 0);
344 input_set_abs_params(input, ABS_DISTANCE, 0, 32, 0, 0);
345
346 return 0;
347}
348
Bastien Noceraca2dcd42009-05-11 17:18:12 +0200349static int wacom_probe(struct hid_device *hdev,
350 const struct hid_device_id *id)
351{
Bastien Noceraca2dcd42009-05-11 17:18:12 +0200352 struct wacom_data *wdata;
353 int ret;
354
355 wdata = kzalloc(sizeof(*wdata), GFP_KERNEL);
356 if (wdata == NULL) {
Joe Perches4291ee32010-12-09 19:29:03 -0800357 hid_err(hdev, "can't alloc wacom descriptor\n");
Bastien Noceraca2dcd42009-05-11 17:18:12 +0200358 return -ENOMEM;
359 }
360
361 hid_set_drvdata(hdev, wdata);
362
Bastien Nocera46a709b2010-01-20 12:00:53 +0000363 /* Parse the HID report now */
Bastien Noceraca2dcd42009-05-11 17:18:12 +0200364 ret = hid_parse(hdev);
365 if (ret) {
Joe Perches4291ee32010-12-09 19:29:03 -0800366 hid_err(hdev, "parse failed\n");
Bastien Noceraca2dcd42009-05-11 17:18:12 +0200367 goto err_free;
368 }
369
370 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
371 if (ret) {
Joe Perches4291ee32010-12-09 19:29:03 -0800372 hid_err(hdev, "hw start failed\n");
Bastien Noceraca2dcd42009-05-11 17:18:12 +0200373 goto err_free;
374 }
375
Przemo Firszt20a3ce72010-03-18 14:34:34 +0000376 ret = device_create_file(&hdev->dev, &dev_attr_speed);
377 if (ret)
Joe Perches4291ee32010-12-09 19:29:03 -0800378 hid_warn(hdev,
379 "can't create sysfs speed attribute err: %d\n", ret);
Jiri Kosina342f31e2010-02-03 15:52:31 +0100380
Przemo Firszt06c7c312010-03-22 09:55:04 +0100381 /* Set Wacom mode 2 with high reporting speed */
382 wacom_poke(hdev, 1);
Bastien Nocera46a709b2010-01-20 12:00:53 +0000383
Przemo Firszt59d23342010-03-15 19:16:23 +0000384#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
385 wdata->battery.properties = wacom_battery_props;
386 wdata->battery.num_properties = ARRAY_SIZE(wacom_battery_props);
387 wdata->battery.get_property = wacom_battery_get_property;
388 wdata->battery.name = "wacom_battery";
389 wdata->battery.type = POWER_SUPPLY_TYPE_BATTERY;
390 wdata->battery.use_for_apm = 0;
Bastien Nocera46a709b2010-01-20 12:00:53 +0000391
Przemo Firszt59d23342010-03-15 19:16:23 +0000392 ret = power_supply_register(&hdev->dev, &wdata->battery);
393 if (ret) {
Joe Perches4291ee32010-12-09 19:29:03 -0800394 hid_warn(hdev, "can't create sysfs battery attribute, err: %d\n",
395 ret);
David Herrmanndde58cf2011-09-05 18:45:28 +0200396 goto err_battery;
Przemo Firszt59d23342010-03-15 19:16:23 +0000397 }
398
399 wdata->ac.properties = wacom_ac_props;
400 wdata->ac.num_properties = ARRAY_SIZE(wacom_ac_props);
401 wdata->ac.get_property = wacom_ac_get_property;
402 wdata->ac.name = "wacom_ac";
403 wdata->ac.type = POWER_SUPPLY_TYPE_MAINS;
404 wdata->ac.use_for_apm = 0;
405
406 ret = power_supply_register(&hdev->dev, &wdata->ac);
407 if (ret) {
Joe Perches4291ee32010-12-09 19:29:03 -0800408 hid_warn(hdev,
409 "can't create ac battery attribute, err: %d\n", ret);
David Herrmanndde58cf2011-09-05 18:45:28 +0200410 goto err_ac;
Przemo Firszt59d23342010-03-15 19:16:23 +0000411 }
Przemo Firszt59d23342010-03-15 19:16:23 +0000412#endif
Bastien Noceraca2dcd42009-05-11 17:18:12 +0200413 return 0;
Daniel Mack987a6c02010-08-02 20:15:17 -0700414
David Herrmanndde58cf2011-09-05 18:45:28 +0200415#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
416err_ac:
417 power_supply_unregister(&wdata->battery);
418err_battery:
419 device_remove_file(&hdev->dev, &dev_attr_speed);
420 hid_hw_stop(hdev);
421#endif
Bastien Noceraca2dcd42009-05-11 17:18:12 +0200422err_free:
423 kfree(wdata);
424 return ret;
425}
426
427static void wacom_remove(struct hid_device *hdev)
428{
Przemo Firszt59d23342010-03-15 19:16:23 +0000429#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
430 struct wacom_data *wdata = hid_get_drvdata(hdev);
431#endif
David Herrmann90866172011-09-05 18:45:29 +0200432 device_remove_file(&hdev->dev, &dev_attr_speed);
Bastien Noceraca2dcd42009-05-11 17:18:12 +0200433 hid_hw_stop(hdev);
Przemo Firszt59d23342010-03-15 19:16:23 +0000434
435#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
436 power_supply_unregister(&wdata->battery);
437 power_supply_unregister(&wdata->ac);
438#endif
Bastien Noceraca2dcd42009-05-11 17:18:12 +0200439 kfree(hid_get_drvdata(hdev));
440}
441
442static const struct hid_device_id wacom_devices[] = {
443 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH) },
Jiri Kosinad5e0a062010-07-20 17:48:48 +0200444
Bastien Noceraca2dcd42009-05-11 17:18:12 +0200445 { }
446};
447MODULE_DEVICE_TABLE(hid, wacom_devices);
448
449static struct hid_driver wacom_driver = {
450 .name = "wacom",
451 .id_table = wacom_devices,
452 .probe = wacom_probe,
453 .remove = wacom_remove,
454 .raw_event = wacom_raw_event,
David Herrmann3797ef62011-10-08 23:20:17 +0200455 .input_mapped = wacom_input_mapped,
Bastien Noceraca2dcd42009-05-11 17:18:12 +0200456};
457
Peter Huewea24f4232009-07-02 19:08:38 +0200458static int __init wacom_init(void)
Bastien Noceraca2dcd42009-05-11 17:18:12 +0200459{
460 int ret;
461
462 ret = hid_register_driver(&wacom_driver);
463 if (ret)
Joe Perches4291ee32010-12-09 19:29:03 -0800464 pr_err("can't register wacom driver\n");
Bastien Noceraca2dcd42009-05-11 17:18:12 +0200465 return ret;
466}
467
Peter Huewea24f4232009-07-02 19:08:38 +0200468static void __exit wacom_exit(void)
Bastien Noceraca2dcd42009-05-11 17:18:12 +0200469{
470 hid_unregister_driver(&wacom_driver);
471}
472
473module_init(wacom_init);
474module_exit(wacom_exit);
475MODULE_LICENSE("GPL");
476