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1 | /* |
2 | * USB Hanwang tablet support |
3 | * |
4 | * Copyright (c) 2010 Xing Wei <weixing@hanwang.com.cn> |
5 | * |
6 | */ |
7 | |
8 | /* |
9 | * This program is free software; you can redistribute it and/or modify |
10 | * it under the terms of the GNU General Public License as published by |
11 | * the Free Software Foundation; either version 2 of the License, or |
12 | * (at your option) any later version. |
13 | * |
14 | * This program is distributed in the hope that it will be useful, |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
17 | * GNU General Public License for more details. |
18 | * |
19 | * You should have received a copy of the GNU General Public License |
20 | * along with this program; if not, write to the Free Software |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
22 | * |
23 | */ |
24 | |
25 | #include <linux/types.h> |
26 | #include <linux/kernel.h> |
27 | #include <linux/slab.h> |
28 | #include <linux/module.h> |
29 | #include <linux/init.h> |
30 | #include <linux/usb/input.h> |
31 | |
32 | #define DRIVER_AUTHOR "Xing Wei <weixing@hanwang.com.cn>" |
33 | #define DRIVER_DESC "USB Hanwang tablet driver" |
34 | #define DRIVER_LICENSE "GPL" |
35 | |
36 | MODULE_AUTHOR(DRIVER_AUTHOR); |
37 | MODULE_DESCRIPTION(DRIVER_DESC); |
38 | MODULE_LICENSE(DRIVER_LICENSE); |
39 | |
40 | #define USB_VENDOR_ID_HANWANG 0x0b57 |
41 | #define HANWANG_TABLET_INT_CLASS 0x0003 |
42 | #define HANWANG_TABLET_INT_SUB_CLASS 0x0001 |
43 | #define HANWANG_TABLET_INT_PROTOCOL 0x0002 |
44 | |
45 | #define ART_MASTER_PKGLEN_MAX 10 |
46 | |
47 | /* device IDs */ |
48 | #define STYLUS_DEVICE_ID 0x02 |
49 | #define TOUCH_DEVICE_ID 0x03 |
50 | #define CURSOR_DEVICE_ID 0x06 |
51 | #define ERASER_DEVICE_ID 0x0A |
52 | #define PAD_DEVICE_ID 0x0F |
53 | |
54 | /* match vendor and interface info */ |
55 | #define HANWANG_TABLET_DEVICE(vend, cl, sc, pr) \ |
56 | .match_flags = USB_DEVICE_ID_MATCH_VENDOR \ |
57 | | USB_DEVICE_ID_MATCH_INT_INFO, \ |
58 | .idVendor = (vend), \ |
59 | .bInterfaceClass = (cl), \ |
60 | .bInterfaceSubClass = (sc), \ |
61 | .bInterfaceProtocol = (pr) |
62 | |
63 | enum hanwang_tablet_type { |
64 | HANWANG_ART_MASTER_III, |
65 | HANWANG_ART_MASTER_HD, |
66 | HANWANG_ART_MASTER_II, |
67 | }; |
68 | |
69 | struct hanwang { |
70 | unsigned char *data; |
71 | dma_addr_t data_dma; |
72 | struct input_dev *dev; |
73 | struct usb_device *usbdev; |
74 | struct urb *irq; |
75 | const struct hanwang_features *features; |
76 | unsigned int current_tool; |
77 | unsigned int current_id; |
78 | char name[64]; |
79 | char phys[32]; |
80 | }; |
81 | |
82 | struct hanwang_features { |
83 | unsigned short pid; |
84 | char *name; |
85 | enum hanwang_tablet_type type; |
86 | int pkg_len; |
87 | int max_x; |
88 | int max_y; |
89 | int max_tilt_x; |
90 | int max_tilt_y; |
91 | int max_pressure; |
92 | }; |
93 | |
94 | static const struct hanwang_features features_array[] = { |
95 | { 0x8528, "Hanwang Art Master III 0906", HANWANG_ART_MASTER_III, |
96 | ART_MASTER_PKGLEN_MAX, 0x5757, 0x3692, 0x3f, 0x7f, 2048 }, |
97 | { 0x8529, "Hanwang Art Master III 0604", HANWANG_ART_MASTER_III, |
98 | ART_MASTER_PKGLEN_MAX, 0x3d84, 0x2672, 0x3f, 0x7f, 2048 }, |
99 | { 0x852a, "Hanwang Art Master III 1308", HANWANG_ART_MASTER_III, |
100 | ART_MASTER_PKGLEN_MAX, 0x7f00, 0x4f60, 0x3f, 0x7f, 2048 }, |
101 | { 0x8401, "Hanwang Art Master HD 5012", HANWANG_ART_MASTER_HD, |
102 | ART_MASTER_PKGLEN_MAX, 0x678e, 0x4150, 0x3f, 0x7f, 1024 }, |
103 | { 0x8503, "Hanwang Art Master II", HANWANG_ART_MASTER_II, |
104 | ART_MASTER_PKGLEN_MAX, 0x27de, 0x1cfe, 0x3f, 0x7f, 1024 }, |
105 | }; |
106 | |
107 | static const int hw_eventtypes[] = { |
108 | EV_KEY, EV_ABS, EV_MSC, |
109 | }; |
110 | |
111 | static const int hw_absevents[] = { |
112 | ABS_X, ABS_Y, ABS_TILT_X, ABS_TILT_Y, ABS_WHEEL, |
113 | ABS_RX, ABS_RY, ABS_PRESSURE, ABS_MISC, |
114 | }; |
115 | |
116 | static const int hw_btnevents[] = { |
117 | BTN_STYLUS, BTN_STYLUS2, BTN_TOOL_PEN, BTN_TOOL_RUBBER, |
118 | BTN_TOOL_MOUSE, BTN_TOOL_FINGER, |
119 | BTN_0, BTN_1, BTN_2, BTN_3, BTN_4, BTN_5, BTN_6, BTN_7, BTN_8, |
120 | }; |
121 | |
122 | static const int hw_mscevents[] = { |
123 | MSC_SERIAL, |
124 | }; |
125 | |
126 | static void hanwang_parse_packet(struct hanwang *hanwang) |
127 | { |
128 | unsigned char *data = hanwang->data; |
129 | struct input_dev *input_dev = hanwang->dev; |
130 | struct usb_device *dev = hanwang->usbdev; |
131 | enum hanwang_tablet_type type = hanwang->features->type; |
132 | int i; |
133 | u16 p; |
134 | |
135 | if (type == HANWANG_ART_MASTER_II) { |
136 | hanwang->current_tool = BTN_TOOL_PEN; |
137 | hanwang->current_id = STYLUS_DEVICE_ID; |
138 | } |
139 | |
140 | switch (data[0]) { |
141 | case 0x02: /* data packet */ |
142 | switch (data[1]) { |
143 | case 0x80: /* tool prox out */ |
144 | if (type != HANWANG_ART_MASTER_II) { |
145 | hanwang->current_id = 0; |
146 | input_report_key(input_dev, |
147 | hanwang->current_tool, 0); |
148 | } |
149 | break; |
150 | |
151 | case 0x00: /* artmaster ii pen leave */ |
152 | if (type == HANWANG_ART_MASTER_II) { |
153 | hanwang->current_id = 0; |
154 | input_report_key(input_dev, |
155 | hanwang->current_tool, 0); |
156 | } |
157 | break; |
158 | |
159 | case 0xc2: /* first time tool prox in */ |
160 | switch (data[3] & 0xf0) { |
161 | case 0x20: /* art_master III */ |
162 | case 0x30: /* art_master_HD */ |
163 | hanwang->current_id = STYLUS_DEVICE_ID; |
164 | hanwang->current_tool = BTN_TOOL_PEN; |
165 | input_report_key(input_dev, BTN_TOOL_PEN, 1); |
166 | break; |
167 | case 0xa0: /* art_master III */ |
168 | case 0xb0: /* art_master_HD */ |
169 | hanwang->current_id = ERASER_DEVICE_ID; |
170 | hanwang->current_tool = BTN_TOOL_RUBBER; |
171 | input_report_key(input_dev, BTN_TOOL_RUBBER, 1); |
172 | break; |
173 | default: |
174 | hanwang->current_id = 0; |
175 | dev_dbg(&dev->dev, |
176 | "unknown tablet tool %02x\n", data[0]); |
177 | break; |
178 | } |
179 | break; |
180 | |
181 | default: /* tool data packet */ |
182 | switch (type) { |
183 | case HANWANG_ART_MASTER_III: |
184 | p = (data[6] << 3) | |
185 | ((data[7] & 0xc0) >> 5) | |
186 | (data[1] & 0x01); |
187 | break; |
188 | |
189 | case HANWANG_ART_MASTER_HD: |
190 | case HANWANG_ART_MASTER_II: |
191 | p = (data[7] >> 6) | (data[6] << 2); |
192 | break; |
193 | |
194 | default: |
195 | p = 0; |
196 | break; |
197 | } |
198 | |
199 | input_report_abs(input_dev, ABS_X, |
200 | be16_to_cpup((__be16 *)&data[2])); |
201 | input_report_abs(input_dev, ABS_Y, |
202 | be16_to_cpup((__be16 *)&data[4])); |
203 | input_report_abs(input_dev, ABS_PRESSURE, p); |
204 | input_report_abs(input_dev, ABS_TILT_X, data[7] & 0x3f); |
205 | input_report_abs(input_dev, ABS_TILT_Y, data[8] & 0x7f); |
206 | input_report_key(input_dev, BTN_STYLUS, data[1] & 0x02); |
207 | |
208 | if (type != HANWANG_ART_MASTER_II) |
209 | input_report_key(input_dev, BTN_STYLUS2, |
210 | data[1] & 0x04); |
211 | else |
212 | input_report_key(input_dev, BTN_TOOL_PEN, 1); |
213 | |
214 | break; |
215 | } |
216 | |
217 | input_report_abs(input_dev, ABS_MISC, hanwang->current_id); |
218 | input_event(input_dev, EV_MSC, MSC_SERIAL, |
219 | hanwang->features->pid); |
220 | break; |
221 | |
222 | case 0x0c: |
223 | /* roll wheel */ |
224 | hanwang->current_id = PAD_DEVICE_ID; |
225 | |
226 | switch (type) { |
227 | case HANWANG_ART_MASTER_III: |
228 | input_report_key(input_dev, BTN_TOOL_FINGER, |
229 | data[1] || data[2] || data[3]); |
230 | input_report_abs(input_dev, ABS_WHEEL, data[1]); |
231 | input_report_key(input_dev, BTN_0, data[2]); |
232 | for (i = 0; i < 8; i++) |
233 | input_report_key(input_dev, |
234 | BTN_1 + i, data[3] & (1 << i)); |
235 | break; |
236 | |
237 | case HANWANG_ART_MASTER_HD: |
238 | input_report_key(input_dev, BTN_TOOL_FINGER, data[1] || |
239 | data[2] || data[3] || data[4] || |
240 | data[5] || data[6]); |
241 | input_report_abs(input_dev, ABS_RX, |
242 | ((data[1] & 0x1f) << 8) | data[2]); |
243 | input_report_abs(input_dev, ABS_RY, |
244 | ((data[3] & 0x1f) << 8) | data[4]); |
245 | input_report_key(input_dev, BTN_0, data[5] & 0x01); |
246 | for (i = 0; i < 4; i++) { |
247 | input_report_key(input_dev, |
248 | BTN_1 + i, data[5] & (1 << i)); |
249 | input_report_key(input_dev, |
250 | BTN_5 + i, data[6] & (1 << i)); |
251 | } |
252 | break; |
253 | |
254 | case HANWANG_ART_MASTER_II: |
255 | dev_dbg(&dev->dev, "error packet %02x\n", data[0]); |
256 | return; |
257 | } |
258 | |
259 | input_report_abs(input_dev, ABS_MISC, hanwang->current_id); |
260 | input_event(input_dev, EV_MSC, MSC_SERIAL, 0xffffffff); |
261 | break; |
262 | |
263 | default: |
264 | dev_dbg(&dev->dev, "error packet %02x\n", data[0]); |
265 | break; |
266 | } |
267 | |
268 | input_sync(input_dev); |
269 | } |
270 | |
271 | static void hanwang_irq(struct urb *urb) |
272 | { |
273 | struct hanwang *hanwang = urb->context; |
274 | struct usb_device *dev = hanwang->usbdev; |
275 | int retval; |
276 | |
277 | switch (urb->status) { |
278 | case 0: |
279 | /* success */; |
280 | hanwang_parse_packet(hanwang); |
281 | break; |
282 | case -ECONNRESET: |
283 | case -ENOENT: |
284 | case -ESHUTDOWN: |
285 | /* this urb is terminated, clean up */ |
286 | dev_err(&dev->dev, "%s - urb shutting down with status: %d", |
287 | __func__, urb->status); |
288 | return; |
289 | default: |
290 | dev_err(&dev->dev, "%s - nonzero urb status received: %d", |
291 | __func__, urb->status); |
292 | break; |
293 | } |
294 | |
295 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
296 | if (retval) |
297 | dev_err(&dev->dev, "%s - usb_submit_urb failed with result %d", |
298 | __func__, retval); |
299 | } |
300 | |
301 | static int hanwang_open(struct input_dev *dev) |
302 | { |
303 | struct hanwang *hanwang = input_get_drvdata(dev); |
304 | |
305 | hanwang->irq->dev = hanwang->usbdev; |
306 | if (usb_submit_urb(hanwang->irq, GFP_KERNEL)) |
307 | return -EIO; |
308 | |
309 | return 0; |
310 | } |
311 | |
312 | static void hanwang_close(struct input_dev *dev) |
313 | { |
314 | struct hanwang *hanwang = input_get_drvdata(dev); |
315 | |
316 | usb_kill_urb(hanwang->irq); |
317 | } |
318 | |
319 | static bool get_features(struct usb_device *dev, struct hanwang *hanwang) |
320 | { |
321 | int i; |
322 | |
323 | for (i = 0; i < ARRAY_SIZE(features_array); i++) { |
324 | if (le16_to_cpu(dev->descriptor.idProduct) == |
325 | features_array[i].pid) { |
326 | hanwang->features = &features_array[i]; |
327 | return true; |
328 | } |
329 | } |
330 | |
331 | return false; |
332 | } |
333 | |
334 | |
335 | static int hanwang_probe(struct usb_interface *intf, const struct usb_device_id *id) |
336 | { |
337 | struct usb_device *dev = interface_to_usbdev(intf); |
338 | struct usb_endpoint_descriptor *endpoint; |
339 | struct hanwang *hanwang; |
340 | struct input_dev *input_dev; |
341 | int error; |
342 | int i; |
343 | |
344 | hanwang = kzalloc(sizeof(struct hanwang), GFP_KERNEL); |
345 | input_dev = input_allocate_device(); |
346 | if (!hanwang || !input_dev) { |
347 | error = -ENOMEM; |
348 | goto fail1; |
349 | } |
350 | |
351 | if (!get_features(dev, hanwang)) { |
352 | error = -ENXIO; |
353 | goto fail1; |
354 | } |
355 | |
356 | hanwang->data = usb_alloc_coherent(dev, hanwang->features->pkg_len, |
357 | GFP_KERNEL, &hanwang->data_dma); |
358 | if (!hanwang->data) { |
359 | error = -ENOMEM; |
360 | goto fail1; |
361 | } |
362 | |
363 | hanwang->irq = usb_alloc_urb(0, GFP_KERNEL); |
364 | if (!hanwang->irq) { |
365 | error = -ENOMEM; |
366 | goto fail2; |
367 | } |
368 | |
369 | hanwang->usbdev = dev; |
370 | hanwang->dev = input_dev; |
371 | |
372 | usb_make_path(dev, hanwang->phys, sizeof(hanwang->phys)); |
373 | strlcat(hanwang->phys, "/input0", sizeof(hanwang->phys)); |
374 | |
375 | strlcpy(hanwang->name, hanwang->features->name, sizeof(hanwang->name)); |
376 | input_dev->name = hanwang->name; |
377 | input_dev->phys = hanwang->phys; |
378 | usb_to_input_id(dev, &input_dev->id); |
379 | input_dev->dev.parent = &intf->dev; |
380 | |
381 | input_set_drvdata(input_dev, hanwang); |
382 | |
383 | input_dev->open = hanwang_open; |
384 | input_dev->close = hanwang_close; |
385 | |
386 | for (i = 0; i < ARRAY_SIZE(hw_eventtypes); ++i) |
387 | __set_bit(hw_eventtypes[i], input_dev->evbit); |
388 | |
389 | for (i = 0; i < ARRAY_SIZE(hw_absevents); ++i) |
390 | __set_bit(hw_absevents[i], input_dev->absbit); |
391 | |
392 | for (i = 0; i < ARRAY_SIZE(hw_btnevents); ++i) |
393 | __set_bit(hw_btnevents[i], input_dev->keybit); |
394 | |
395 | for (i = 0; i < ARRAY_SIZE(hw_mscevents); ++i) |
396 | __set_bit(hw_mscevents[i], input_dev->mscbit); |
397 | |
398 | input_set_abs_params(input_dev, ABS_X, |
399 | 0, hanwang->features->max_x, 4, 0); |
400 | input_set_abs_params(input_dev, ABS_Y, |
401 | 0, hanwang->features->max_y, 4, 0); |
402 | input_set_abs_params(input_dev, ABS_TILT_X, |
403 | 0, hanwang->features->max_tilt_x, 0, 0); |
404 | input_set_abs_params(input_dev, ABS_TILT_Y, |
405 | 0, hanwang->features->max_tilt_y, 0, 0); |
406 | input_set_abs_params(input_dev, ABS_PRESSURE, |
407 | 0, hanwang->features->max_pressure, 0, 0); |
408 | |
409 | endpoint = &intf->cur_altsetting->endpoint[0].desc; |
410 | usb_fill_int_urb(hanwang->irq, dev, |
411 | usb_rcvintpipe(dev, endpoint->bEndpointAddress), |
412 | hanwang->data, hanwang->features->pkg_len, |
413 | hanwang_irq, hanwang, endpoint->bInterval); |
414 | hanwang->irq->transfer_dma = hanwang->data_dma; |
415 | hanwang->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
416 | |
417 | error = input_register_device(hanwang->dev); |
418 | if (error) |
419 | goto fail3; |
420 | |
421 | usb_set_intfdata(intf, hanwang); |
422 | |
423 | return 0; |
424 | |
425 | fail3: usb_free_urb(hanwang->irq); |
426 | fail2: usb_free_coherent(dev, hanwang->features->pkg_len, |
427 | hanwang->data, hanwang->data_dma); |
428 | fail1: input_free_device(input_dev); |
429 | kfree(hanwang); |
430 | return error; |
431 | |
432 | } |
433 | |
434 | static void hanwang_disconnect(struct usb_interface *intf) |
435 | { |
436 | struct hanwang *hanwang = usb_get_intfdata(intf); |
437 | |
438 | input_unregister_device(hanwang->dev); |
439 | usb_free_urb(hanwang->irq); |
440 | usb_free_coherent(interface_to_usbdev(intf), |
441 | hanwang->features->pkg_len, hanwang->data, |
442 | hanwang->data_dma); |
443 | kfree(hanwang); |
444 | usb_set_intfdata(intf, NULL); |
445 | } |
446 | |
447 | static const struct usb_device_id hanwang_ids[] = { |
448 | { HANWANG_TABLET_DEVICE(USB_VENDOR_ID_HANWANG, HANWANG_TABLET_INT_CLASS, |
449 | HANWANG_TABLET_INT_SUB_CLASS, HANWANG_TABLET_INT_PROTOCOL) }, |
450 | {} |
451 | }; |
452 | |
453 | MODULE_DEVICE_TABLE(usb, hanwang_ids); |
454 | |
455 | static struct usb_driver hanwang_driver = { |
456 | .name = "hanwang", |
457 | .probe = hanwang_probe, |
458 | .disconnect = hanwang_disconnect, |
459 | .id_table = hanwang_ids, |
460 | }; |
461 | |
462 | module_usb_driver(hanwang_driver); |
463 |
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