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