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25#include <linux/types.h>
26#include <linux/kernel.h>
27#include <linux/slab.h>
28#include <linux/module.h>
29#include <linux/usb/input.h>
30
31#define DRIVER_AUTHOR "Xing Wei <weixing@hanwang.com.cn>"
32#define DRIVER_DESC "USB Hanwang tablet driver"
33#define DRIVER_LICENSE "GPL"
34
35MODULE_AUTHOR(DRIVER_AUTHOR);
36MODULE_DESCRIPTION(DRIVER_DESC);
37MODULE_LICENSE(DRIVER_LICENSE);
38
39#define USB_VENDOR_ID_HANWANG 0x0b57
40#define HANWANG_TABLET_INT_CLASS 0x0003
41#define HANWANG_TABLET_INT_SUB_CLASS 0x0001
42#define HANWANG_TABLET_INT_PROTOCOL 0x0002
43
44#define ART_MASTER_PKGLEN_MAX 10
45
46
47#define STYLUS_DEVICE_ID 0x02
48#define TOUCH_DEVICE_ID 0x03
49#define CURSOR_DEVICE_ID 0x06
50#define ERASER_DEVICE_ID 0x0A
51#define PAD_DEVICE_ID 0x0F
52
53
54#define HANWANG_TABLET_DEVICE(vend, cl, sc, pr) \
55 .match_flags = USB_DEVICE_ID_MATCH_VENDOR \
56 | USB_DEVICE_ID_MATCH_INT_INFO, \
57 .idVendor = (vend), \
58 .bInterfaceClass = (cl), \
59 .bInterfaceSubClass = (sc), \
60 .bInterfaceProtocol = (pr)
61
62enum hanwang_tablet_type {
63 HANWANG_ART_MASTER_III,
64 HANWANG_ART_MASTER_HD,
65 HANWANG_ART_MASTER_II,
66};
67
68struct hanwang {
69 unsigned char *data;
70 dma_addr_t data_dma;
71 struct input_dev *dev;
72 struct usb_device *usbdev;
73 struct urb *irq;
74 const struct hanwang_features *features;
75 unsigned int current_tool;
76 unsigned int current_id;
77 char name[64];
78 char phys[32];
79};
80
81struct hanwang_features {
82 unsigned short pid;
83 char *name;
84 enum hanwang_tablet_type type;
85 int pkg_len;
86 int max_x;
87 int max_y;
88 int max_tilt_x;
89 int max_tilt_y;
90 int max_pressure;
91};
92
93static const struct hanwang_features features_array[] = {
94 { 0x8528, "Hanwang Art Master III 0906", HANWANG_ART_MASTER_III,
95 ART_MASTER_PKGLEN_MAX, 0x5757, 0x3692, 0x3f, 0x7f, 2048 },
96 { 0x8529, "Hanwang Art Master III 0604", HANWANG_ART_MASTER_III,
97 ART_MASTER_PKGLEN_MAX, 0x3d84, 0x2672, 0x3f, 0x7f, 2048 },
98 { 0x852a, "Hanwang Art Master III 1308", HANWANG_ART_MASTER_III,
99 ART_MASTER_PKGLEN_MAX, 0x7f00, 0x4f60, 0x3f, 0x7f, 2048 },
100 { 0x8401, "Hanwang Art Master HD 5012", HANWANG_ART_MASTER_HD,
101 ART_MASTER_PKGLEN_MAX, 0x678e, 0x4150, 0x3f, 0x7f, 1024 },
102 { 0x8503, "Hanwang Art Master II", HANWANG_ART_MASTER_II,
103 ART_MASTER_PKGLEN_MAX, 0x27de, 0x1cfe, 0x3f, 0x7f, 1024 },
104};
105
106static const int hw_eventtypes[] = {
107 EV_KEY, EV_ABS, EV_MSC,
108};
109
110static const int hw_absevents[] = {
111 ABS_X, ABS_Y, ABS_TILT_X, ABS_TILT_Y, ABS_WHEEL,
112 ABS_RX, ABS_RY, ABS_PRESSURE, ABS_MISC,
113};
114
115static const int hw_btnevents[] = {
116 BTN_STYLUS, BTN_STYLUS2, BTN_TOOL_PEN, BTN_TOOL_RUBBER,
117 BTN_TOOL_MOUSE, BTN_TOOL_FINGER,
118 BTN_0, BTN_1, BTN_2, BTN_3, BTN_4, BTN_5, BTN_6, BTN_7, BTN_8,
119};
120
121static const int hw_mscevents[] = {
122 MSC_SERIAL,
123};
124
125static void hanwang_parse_packet(struct hanwang *hanwang)
126{
127 unsigned char *data = hanwang->data;
128 struct input_dev *input_dev = hanwang->dev;
129 struct usb_device *dev = hanwang->usbdev;
130 enum hanwang_tablet_type type = hanwang->features->type;
131 int i;
132 u16 p;
133
134 if (type == HANWANG_ART_MASTER_II) {
135 hanwang->current_tool = BTN_TOOL_PEN;
136 hanwang->current_id = STYLUS_DEVICE_ID;
137 }
138
139 switch (data[0]) {
140 case 0x02:
141 switch (data[1]) {
142 case 0x80:
143 if (type != HANWANG_ART_MASTER_II) {
144 hanwang->current_id = 0;
145 input_report_key(input_dev,
146 hanwang->current_tool, 0);
147 }
148 break;
149
150 case 0x00:
151 if (type == HANWANG_ART_MASTER_II) {
152 hanwang->current_id = 0;
153 input_report_key(input_dev,
154 hanwang->current_tool, 0);
155 }
156 break;
157
158 case 0xc2:
159 switch (data[3] & 0xf0) {
160 case 0x20:
161 case 0x30:
162 hanwang->current_id = STYLUS_DEVICE_ID;
163 hanwang->current_tool = BTN_TOOL_PEN;
164 input_report_key(input_dev, BTN_TOOL_PEN, 1);
165 break;
166 case 0xa0:
167 case 0xb0:
168 hanwang->current_id = ERASER_DEVICE_ID;
169 hanwang->current_tool = BTN_TOOL_RUBBER;
170 input_report_key(input_dev, BTN_TOOL_RUBBER, 1);
171 break;
172 default:
173 hanwang->current_id = 0;
174 dev_dbg(&dev->dev,
175 "unknown tablet tool %02x\n", data[0]);
176 break;
177 }
178 break;
179
180 default:
181 switch (type) {
182 case HANWANG_ART_MASTER_III:
183 p = (data[6] << 3) |
184 ((data[7] & 0xc0) >> 5) |
185 (data[1] & 0x01);
186 break;
187
188 case HANWANG_ART_MASTER_HD:
189 case HANWANG_ART_MASTER_II:
190 p = (data[7] >> 6) | (data[6] << 2);
191 break;
192
193 default:
194 p = 0;
195 break;
196 }
197
198 input_report_abs(input_dev, ABS_X,
199 be16_to_cpup((__be16 *)&data[2]));
200 input_report_abs(input_dev, ABS_Y,
201 be16_to_cpup((__be16 *)&data[4]));
202 input_report_abs(input_dev, ABS_PRESSURE, p);
203 input_report_abs(input_dev, ABS_TILT_X, data[7] & 0x3f);
204 input_report_abs(input_dev, ABS_TILT_Y, data[8] & 0x7f);
205 input_report_key(input_dev, BTN_STYLUS, data[1] & 0x02);
206
207 if (type != HANWANG_ART_MASTER_II)
208 input_report_key(input_dev, BTN_STYLUS2,
209 data[1] & 0x04);
210 else
211 input_report_key(input_dev, BTN_TOOL_PEN, 1);
212
213 break;
214 }
215
216 input_report_abs(input_dev, ABS_MISC, hanwang->current_id);
217 input_event(input_dev, EV_MSC, MSC_SERIAL,
218 hanwang->features->pid);
219 break;
220
221 case 0x0c:
222
223 hanwang->current_id = PAD_DEVICE_ID;
224
225 switch (type) {
226 case HANWANG_ART_MASTER_III:
227 input_report_key(input_dev, BTN_TOOL_FINGER,
228 data[1] || data[2] || data[3]);
229 input_report_abs(input_dev, ABS_WHEEL, data[1]);
230 input_report_key(input_dev, BTN_0, data[2]);
231 for (i = 0; i < 8; i++)
232 input_report_key(input_dev,
233 BTN_1 + i, data[3] & (1 << i));
234 break;
235
236 case HANWANG_ART_MASTER_HD:
237 input_report_key(input_dev, BTN_TOOL_FINGER, data[1] ||
238 data[2] || data[3] || data[4] ||
239 data[5] || data[6]);
240 input_report_abs(input_dev, ABS_RX,
241 ((data[1] & 0x1f) << 8) | data[2]);
242 input_report_abs(input_dev, ABS_RY,
243 ((data[3] & 0x1f) << 8) | data[4]);
244 input_report_key(input_dev, BTN_0, data[5] & 0x01);
245 for (i = 0; i < 4; i++) {
246 input_report_key(input_dev,
247 BTN_1 + i, data[5] & (1 << i));
248 input_report_key(input_dev,
249 BTN_5 + i, data[6] & (1 << i));
250 }
251 break;
252
253 case HANWANG_ART_MASTER_II:
254 dev_dbg(&dev->dev, "error packet %02x\n", data[0]);
255 return;
256 }
257
258 input_report_abs(input_dev, ABS_MISC, hanwang->current_id);
259 input_event(input_dev, EV_MSC, MSC_SERIAL, 0xffffffff);
260 break;
261
262 default:
263 dev_dbg(&dev->dev, "error packet %02x\n", data[0]);
264 break;
265 }
266
267 input_sync(input_dev);
268}
269
270static void hanwang_irq(struct urb *urb)
271{
272 struct hanwang *hanwang = urb->context;
273 struct usb_device *dev = hanwang->usbdev;
274 int retval;
275
276 switch (urb->status) {
277 case 0:
278 ;
279 hanwang_parse_packet(hanwang);
280 break;
281 case -ECONNRESET:
282 case -ENOENT:
283 case -ESHUTDOWN:
284
285 dev_err(&dev->dev, "%s - urb shutting down with status: %d",
286 __func__, urb->status);
287 return;
288 default:
289 dev_err(&dev->dev, "%s - nonzero urb status received: %d",
290 __func__, urb->status);
291 break;
292 }
293
294 retval = usb_submit_urb(urb, GFP_ATOMIC);
295 if (retval)
296 dev_err(&dev->dev, "%s - usb_submit_urb failed with result %d",
297 __func__, retval);
298}
299
300static int hanwang_open(struct input_dev *dev)
301{
302 struct hanwang *hanwang = input_get_drvdata(dev);
303
304 hanwang->irq->dev = hanwang->usbdev;
305 if (usb_submit_urb(hanwang->irq, GFP_KERNEL))
306 return -EIO;
307
308 return 0;
309}
310
311static void hanwang_close(struct input_dev *dev)
312{
313 struct hanwang *hanwang = input_get_drvdata(dev);
314
315 usb_kill_urb(hanwang->irq);
316}
317
318static bool get_features(struct usb_device *dev, struct hanwang *hanwang)
319{
320 int i;
321
322 for (i = 0; i < ARRAY_SIZE(features_array); i++) {
323 if (le16_to_cpu(dev->descriptor.idProduct) ==
324 features_array[i].pid) {
325 hanwang->features = &features_array[i];
326 return true;
327 }
328 }
329
330 return false;
331}
332
333
334static int hanwang_probe(struct usb_interface *intf, const struct usb_device_id *id)
335{
336 struct usb_device *dev = interface_to_usbdev(intf);
337 struct usb_endpoint_descriptor *endpoint;
338 struct hanwang *hanwang;
339 struct input_dev *input_dev;
340 int error;
341 int i;
342
343 if (intf->cur_altsetting->desc.bNumEndpoints < 1)
344 return -ENODEV;
345
346 hanwang = kzalloc(sizeof(struct hanwang), GFP_KERNEL);
347 input_dev = input_allocate_device();
348 if (!hanwang || !input_dev) {
349 error = -ENOMEM;
350 goto fail1;
351 }
352
353 if (!get_features(dev, hanwang)) {
354 error = -ENXIO;
355 goto fail1;
356 }
357
358 hanwang->data = usb_alloc_coherent(dev, hanwang->features->pkg_len,
359 GFP_KERNEL, &hanwang->data_dma);
360 if (!hanwang->data) {
361 error = -ENOMEM;
362 goto fail1;
363 }
364
365 hanwang->irq = usb_alloc_urb(0, GFP_KERNEL);
366 if (!hanwang->irq) {
367 error = -ENOMEM;
368 goto fail2;
369 }
370
371 hanwang->usbdev = dev;
372 hanwang->dev = input_dev;
373
374 usb_make_path(dev, hanwang->phys, sizeof(hanwang->phys));
375 strlcat(hanwang->phys, "/input0", sizeof(hanwang->phys));
376
377 strlcpy(hanwang->name, hanwang->features->name, sizeof(hanwang->name));
378 input_dev->name = hanwang->name;
379 input_dev->phys = hanwang->phys;
380 usb_to_input_id(dev, &input_dev->id);
381 input_dev->dev.parent = &intf->dev;
382
383 input_set_drvdata(input_dev, hanwang);
384
385 input_dev->open = hanwang_open;
386 input_dev->close = hanwang_close;
387
388 for (i = 0; i < ARRAY_SIZE(hw_eventtypes); ++i)
389 __set_bit(hw_eventtypes[i], input_dev->evbit);
390
391 for (i = 0; i < ARRAY_SIZE(hw_absevents); ++i)
392 __set_bit(hw_absevents[i], input_dev->absbit);
393
394 for (i = 0; i < ARRAY_SIZE(hw_btnevents); ++i)
395 __set_bit(hw_btnevents[i], input_dev->keybit);
396
397 for (i = 0; i < ARRAY_SIZE(hw_mscevents); ++i)
398 __set_bit(hw_mscevents[i], input_dev->mscbit);
399
400 input_set_abs_params(input_dev, ABS_X,
401 0, hanwang->features->max_x, 4, 0);
402 input_set_abs_params(input_dev, ABS_Y,
403 0, hanwang->features->max_y, 4, 0);
404 input_set_abs_params(input_dev, ABS_TILT_X,
405 0, hanwang->features->max_tilt_x, 0, 0);
406 input_set_abs_params(input_dev, ABS_TILT_Y,
407 0, hanwang->features->max_tilt_y, 0, 0);
408 input_set_abs_params(input_dev, ABS_PRESSURE,
409 0, hanwang->features->max_pressure, 0, 0);
410
411 endpoint = &intf->cur_altsetting->endpoint[0].desc;
412 usb_fill_int_urb(hanwang->irq, dev,
413 usb_rcvintpipe(dev, endpoint->bEndpointAddress),
414 hanwang->data, hanwang->features->pkg_len,
415 hanwang_irq, hanwang, endpoint->bInterval);
416 hanwang->irq->transfer_dma = hanwang->data_dma;
417 hanwang->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
418
419 error = input_register_device(hanwang->dev);
420 if (error)
421 goto fail3;
422
423 usb_set_intfdata(intf, hanwang);
424
425 return 0;
426
427 fail3: usb_free_urb(hanwang->irq);
428 fail2: usb_free_coherent(dev, hanwang->features->pkg_len,
429 hanwang->data, hanwang->data_dma);
430 fail1: input_free_device(input_dev);
431 kfree(hanwang);
432 return error;
433
434}
435
436static void hanwang_disconnect(struct usb_interface *intf)
437{
438 struct hanwang *hanwang = usb_get_intfdata(intf);
439
440 input_unregister_device(hanwang->dev);
441 usb_free_urb(hanwang->irq);
442 usb_free_coherent(interface_to_usbdev(intf),
443 hanwang->features->pkg_len, hanwang->data,
444 hanwang->data_dma);
445 kfree(hanwang);
446 usb_set_intfdata(intf, NULL);
447}
448
449static const struct usb_device_id hanwang_ids[] = {
450 { HANWANG_TABLET_DEVICE(USB_VENDOR_ID_HANWANG, HANWANG_TABLET_INT_CLASS,
451 HANWANG_TABLET_INT_SUB_CLASS, HANWANG_TABLET_INT_PROTOCOL) },
452 {}
453};
454
455MODULE_DEVICE_TABLE(usb, hanwang_ids);
456
457static struct usb_driver hanwang_driver = {
458 .name = "hanwang",
459 .probe = hanwang_probe,
460 .disconnect = hanwang_disconnect,
461 .id_table = hanwang_ids,
462};
463
464module_usb_driver(hanwang_driver);
465
