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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> |
ca2dcd40 BN |
25 | |
26 | #include "hid-ids.h" | |
27 | ||
28 | struct wacom_data { | |
29 | __u16 tool; | |
30 | unsigned char butstate; | |
31 | }; | |
32 | ||
33 | static int wacom_raw_event(struct hid_device *hdev, struct hid_report *report, | |
34 | u8 *raw_data, int size) | |
35 | { | |
36 | struct wacom_data *wdata = hid_get_drvdata(hdev); | |
37 | struct hid_input *hidinput; | |
38 | struct input_dev *input; | |
39 | unsigned char *data = (unsigned char *) raw_data; | |
40 | int tool, x, y, rw; | |
41 | ||
42 | if (!(hdev->claimed & HID_CLAIMED_INPUT)) | |
43 | return 0; | |
44 | ||
45 | tool = 0; | |
46 | hidinput = list_entry(hdev->inputs.next, struct hid_input, list); | |
47 | input = hidinput->input; | |
48 | ||
49 | /* Check if this is a tablet report */ | |
50 | if (data[0] != 0x03) | |
51 | return 0; | |
52 | ||
53 | /* Get X & Y positions */ | |
54 | x = le16_to_cpu(*(__le16 *) &data[2]); | |
55 | y = le16_to_cpu(*(__le16 *) &data[4]); | |
56 | ||
57 | /* Get current tool identifier */ | |
58 | if (data[1] & 0x90) { /* If pen is in the in/active area */ | |
59 | switch ((data[1] >> 5) & 3) { | |
60 | case 0: /* Pen */ | |
61 | tool = BTN_TOOL_PEN; | |
62 | break; | |
63 | ||
64 | case 1: /* Rubber */ | |
65 | tool = BTN_TOOL_RUBBER; | |
66 | break; | |
67 | ||
68 | case 2: /* Mouse with wheel */ | |
69 | case 3: /* Mouse without wheel */ | |
70 | tool = BTN_TOOL_MOUSE; | |
71 | break; | |
72 | } | |
73 | ||
74 | /* Reset tool if out of active tablet area */ | |
75 | if (!(data[1] & 0x10)) | |
76 | tool = 0; | |
77 | } | |
78 | ||
79 | /* If tool changed, notify input subsystem */ | |
80 | if (wdata->tool != tool) { | |
81 | if (wdata->tool) { | |
82 | /* Completely reset old tool state */ | |
83 | if (wdata->tool == BTN_TOOL_MOUSE) { | |
84 | input_report_key(input, BTN_LEFT, 0); | |
85 | input_report_key(input, BTN_RIGHT, 0); | |
86 | input_report_key(input, BTN_MIDDLE, 0); | |
87 | input_report_abs(input, ABS_DISTANCE, | |
88 | input->absmax[ABS_DISTANCE]); | |
89 | } else { | |
90 | input_report_key(input, BTN_TOUCH, 0); | |
91 | input_report_key(input, BTN_STYLUS, 0); | |
92 | input_report_key(input, BTN_STYLUS2, 0); | |
93 | input_report_abs(input, ABS_PRESSURE, 0); | |
94 | } | |
95 | input_report_key(input, wdata->tool, 0); | |
96 | input_sync(input); | |
97 | } | |
98 | wdata->tool = tool; | |
99 | if (tool) | |
100 | input_report_key(input, tool, 1); | |
101 | } | |
102 | ||
103 | if (tool) { | |
104 | input_report_abs(input, ABS_X, x); | |
105 | input_report_abs(input, ABS_Y, y); | |
106 | ||
107 | switch ((data[1] >> 5) & 3) { | |
108 | case 2: /* Mouse with wheel */ | |
109 | input_report_key(input, BTN_MIDDLE, data[1] & 0x04); | |
110 | rw = (data[6] & 0x01) ? -1 : | |
111 | (data[6] & 0x02) ? 1 : 0; | |
112 | input_report_rel(input, REL_WHEEL, rw); | |
113 | /* fall through */ | |
114 | ||
115 | case 3: /* Mouse without wheel */ | |
116 | input_report_key(input, BTN_LEFT, data[1] & 0x01); | |
117 | input_report_key(input, BTN_RIGHT, data[1] & 0x02); | |
118 | /* Compute distance between mouse and tablet */ | |
119 | rw = 44 - (data[6] >> 2); | |
120 | if (rw < 0) | |
121 | rw = 0; | |
122 | else if (rw > 31) | |
123 | rw = 31; | |
124 | input_report_abs(input, ABS_DISTANCE, rw); | |
125 | break; | |
126 | ||
127 | default: | |
128 | input_report_abs(input, ABS_PRESSURE, | |
129 | data[6] | (((__u16) (data[1] & 0x08)) << 5)); | |
130 | input_report_key(input, BTN_TOUCH, data[1] & 0x01); | |
131 | input_report_key(input, BTN_STYLUS, data[1] & 0x02); | |
132 | input_report_key(input, BTN_STYLUS2, (tool == BTN_TOOL_PEN) && data[1] & 0x04); | |
133 | break; | |
134 | } | |
135 | ||
136 | input_sync(input); | |
137 | } | |
138 | ||
139 | /* Report the state of the two buttons at the top of the tablet | |
140 | * as two extra fingerpad keys (buttons 4 & 5). */ | |
141 | rw = data[7] & 0x03; | |
142 | if (rw != wdata->butstate) { | |
143 | wdata->butstate = rw; | |
144 | input_report_key(input, BTN_0, rw & 0x02); | |
145 | input_report_key(input, BTN_1, rw & 0x01); | |
0e253fdb | 146 | input_report_key(input, BTN_TOOL_FINGER, 0xf0); |
ca2dcd40 BN |
147 | input_event(input, EV_MSC, MSC_SERIAL, 0xf0); |
148 | input_sync(input); | |
149 | } | |
150 | ||
151 | return 1; | |
152 | } | |
153 | ||
154 | static int wacom_probe(struct hid_device *hdev, | |
155 | const struct hid_device_id *id) | |
156 | { | |
157 | struct hid_input *hidinput; | |
158 | struct input_dev *input; | |
159 | struct wacom_data *wdata; | |
46a709b9 | 160 | char rep_data[2]; |
ca2dcd40 | 161 | int ret; |
46a709b9 | 162 | int limit; |
ca2dcd40 BN |
163 | |
164 | wdata = kzalloc(sizeof(*wdata), GFP_KERNEL); | |
165 | if (wdata == NULL) { | |
166 | dev_err(&hdev->dev, "can't alloc wacom descriptor\n"); | |
167 | return -ENOMEM; | |
168 | } | |
169 | ||
170 | hid_set_drvdata(hdev, wdata); | |
171 | ||
46a709b9 | 172 | /* Parse the HID report now */ |
ca2dcd40 BN |
173 | ret = hid_parse(hdev); |
174 | if (ret) { | |
175 | dev_err(&hdev->dev, "parse failed\n"); | |
176 | goto err_free; | |
177 | } | |
178 | ||
179 | ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); | |
180 | if (ret) { | |
181 | dev_err(&hdev->dev, "hw start failed\n"); | |
182 | goto err_free; | |
183 | } | |
184 | ||
342f31e8 JK |
185 | /* |
186 | * Note that if the raw queries fail, it's not a hard failure and it | |
187 | * is safe to continue | |
188 | */ | |
189 | ||
46a709b9 BN |
190 | /* Set Wacom mode2 */ |
191 | rep_data[0] = 0x03; rep_data[1] = 0x00; | |
192 | limit = 3; | |
193 | do { | |
194 | ret = hdev->hid_output_raw_report(hdev, rep_data, 2, | |
195 | HID_FEATURE_REPORT); | |
196 | } while (ret < 0 && limit-- > 0); | |
342f31e8 JK |
197 | if (ret < 0) |
198 | dev_warn(&hdev->dev, "failed to poke device #1, %d\n", ret); | |
46a709b9 BN |
199 | |
200 | /* 0x06 - high reporting speed, 0x05 - low speed */ | |
201 | rep_data[0] = 0x06; rep_data[1] = 0x00; | |
202 | limit = 3; | |
203 | do { | |
204 | ret = hdev->hid_output_raw_report(hdev, rep_data, 2, | |
205 | HID_FEATURE_REPORT); | |
206 | } while (ret < 0 && limit-- > 0); | |
342f31e8 JK |
207 | if (ret < 0) |
208 | dev_warn(&hdev->dev, "failed to poke device #2, %d\n", ret); | |
46a709b9 | 209 | |
ca2dcd40 BN |
210 | hidinput = list_entry(hdev->inputs.next, struct hid_input, list); |
211 | input = hidinput->input; | |
212 | ||
213 | /* Basics */ | |
214 | input->evbit[0] |= BIT(EV_KEY) | BIT(EV_ABS) | BIT(EV_REL); | |
215 | input->absbit[0] |= BIT(ABS_X) | BIT(ABS_Y) | | |
216 | BIT(ABS_PRESSURE) | BIT(ABS_DISTANCE); | |
217 | input->relbit[0] |= BIT(REL_WHEEL); | |
218 | set_bit(BTN_TOOL_PEN, input->keybit); | |
219 | set_bit(BTN_TOUCH, input->keybit); | |
220 | set_bit(BTN_STYLUS, input->keybit); | |
221 | set_bit(BTN_STYLUS2, input->keybit); | |
222 | set_bit(BTN_LEFT, input->keybit); | |
223 | set_bit(BTN_RIGHT, input->keybit); | |
224 | set_bit(BTN_MIDDLE, input->keybit); | |
225 | ||
226 | /* Pad */ | |
227 | input->evbit[0] |= BIT(EV_MSC); | |
228 | input->mscbit[0] |= BIT(MSC_SERIAL); | |
d01799b2 PF |
229 | set_bit(BTN_0, input->keybit); |
230 | set_bit(BTN_1, input->keybit); | |
231 | set_bit(BTN_TOOL_FINGER, input->keybit); | |
ca2dcd40 BN |
232 | |
233 | /* Distance, rubber and mouse */ | |
234 | input->absbit[0] |= BIT(ABS_DISTANCE); | |
235 | set_bit(BTN_TOOL_RUBBER, input->keybit); | |
236 | set_bit(BTN_TOOL_MOUSE, input->keybit); | |
237 | ||
238 | input->absmax[ABS_PRESSURE] = 511; | |
239 | input->absmax[ABS_DISTANCE] = 32; | |
240 | ||
241 | input->absmax[ABS_X] = 16704; | |
242 | input->absmax[ABS_Y] = 12064; | |
243 | input->absfuzz[ABS_X] = 4; | |
244 | input->absfuzz[ABS_Y] = 4; | |
245 | ||
246 | return 0; | |
247 | err_free: | |
248 | kfree(wdata); | |
249 | return ret; | |
250 | } | |
251 | ||
252 | static void wacom_remove(struct hid_device *hdev) | |
253 | { | |
254 | hid_hw_stop(hdev); | |
255 | kfree(hid_get_drvdata(hdev)); | |
256 | } | |
257 | ||
258 | static const struct hid_device_id wacom_devices[] = { | |
259 | { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH) }, | |
260 | ||
261 | { } | |
262 | }; | |
263 | MODULE_DEVICE_TABLE(hid, wacom_devices); | |
264 | ||
265 | static struct hid_driver wacom_driver = { | |
266 | .name = "wacom", | |
267 | .id_table = wacom_devices, | |
268 | .probe = wacom_probe, | |
269 | .remove = wacom_remove, | |
270 | .raw_event = wacom_raw_event, | |
271 | }; | |
272 | ||
a24f423b | 273 | static int __init wacom_init(void) |
ca2dcd40 BN |
274 | { |
275 | int ret; | |
276 | ||
277 | ret = hid_register_driver(&wacom_driver); | |
278 | if (ret) | |
279 | printk(KERN_ERR "can't register wacom driver\n"); | |
ca2dcd40 BN |
280 | return ret; |
281 | } | |
282 | ||
a24f423b | 283 | static void __exit wacom_exit(void) |
ca2dcd40 BN |
284 | { |
285 | hid_unregister_driver(&wacom_driver); | |
286 | } | |
287 | ||
288 | module_init(wacom_init); | |
289 | module_exit(wacom_exit); | |
290 | MODULE_LICENSE("GPL"); | |
291 |