Loading...
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * USB Hanwang tablet support
4 *
5 * Copyright (c) 2010 Xing Wei <weixing@hanwang.com.cn>
6 */
7
8#include <linux/types.h>
9#include <linux/kernel.h>
10#include <linux/slab.h>
11#include <linux/module.h>
12#include <linux/usb/input.h>
13
14MODULE_AUTHOR("Xing Wei <weixing@hanwang.com.cn>");
15MODULE_DESCRIPTION("USB Hanwang tablet driver");
16MODULE_LICENSE("GPL");
17
18#define USB_VENDOR_ID_HANWANG 0x0b57
19#define HANWANG_TABLET_INT_CLASS 0x0003
20#define HANWANG_TABLET_INT_SUB_CLASS 0x0001
21#define HANWANG_TABLET_INT_PROTOCOL 0x0002
22
23#define ART_MASTER_PKGLEN_MAX 10
24
25/* device IDs */
26#define STYLUS_DEVICE_ID 0x02
27#define TOUCH_DEVICE_ID 0x03
28#define CURSOR_DEVICE_ID 0x06
29#define ERASER_DEVICE_ID 0x0A
30#define PAD_DEVICE_ID 0x0F
31
32/* match vendor and interface info */
33#define HANWANG_TABLET_DEVICE(vend, cl, sc, pr) \
34 .match_flags = USB_DEVICE_ID_MATCH_VENDOR \
35 | USB_DEVICE_ID_MATCH_INT_INFO, \
36 .idVendor = (vend), \
37 .bInterfaceClass = (cl), \
38 .bInterfaceSubClass = (sc), \
39 .bInterfaceProtocol = (pr)
40
41enum hanwang_tablet_type {
42 HANWANG_ART_MASTER_III,
43 HANWANG_ART_MASTER_HD,
44 HANWANG_ART_MASTER_II,
45};
46
47struct hanwang {
48 unsigned char *data;
49 dma_addr_t data_dma;
50 struct input_dev *dev;
51 struct usb_device *usbdev;
52 struct urb *irq;
53 const struct hanwang_features *features;
54 unsigned int current_tool;
55 unsigned int current_id;
56 char name[64];
57 char phys[32];
58};
59
60struct hanwang_features {
61 unsigned short pid;
62 char *name;
63 enum hanwang_tablet_type type;
64 int pkg_len;
65 int max_x;
66 int max_y;
67 int max_tilt_x;
68 int max_tilt_y;
69 int max_pressure;
70};
71
72static const struct hanwang_features features_array[] = {
73 { 0x8528, "Hanwang Art Master III 0906", HANWANG_ART_MASTER_III,
74 ART_MASTER_PKGLEN_MAX, 0x5757, 0x3692, 0x3f, 0x7f, 2048 },
75 { 0x8529, "Hanwang Art Master III 0604", HANWANG_ART_MASTER_III,
76 ART_MASTER_PKGLEN_MAX, 0x3d84, 0x2672, 0x3f, 0x7f, 2048 },
77 { 0x852a, "Hanwang Art Master III 1308", HANWANG_ART_MASTER_III,
78 ART_MASTER_PKGLEN_MAX, 0x7f00, 0x4f60, 0x3f, 0x7f, 2048 },
79 { 0x8401, "Hanwang Art Master HD 5012", HANWANG_ART_MASTER_HD,
80 ART_MASTER_PKGLEN_MAX, 0x678e, 0x4150, 0x3f, 0x7f, 1024 },
81 { 0x8503, "Hanwang Art Master II", HANWANG_ART_MASTER_II,
82 ART_MASTER_PKGLEN_MAX, 0x27de, 0x1cfe, 0x3f, 0x7f, 1024 },
83};
84
85static const int hw_eventtypes[] = {
86 EV_KEY, EV_ABS, EV_MSC,
87};
88
89static const int hw_absevents[] = {
90 ABS_X, ABS_Y, ABS_TILT_X, ABS_TILT_Y, ABS_WHEEL,
91 ABS_RX, ABS_RY, ABS_PRESSURE, ABS_MISC,
92};
93
94static const int hw_btnevents[] = {
95 BTN_STYLUS, BTN_STYLUS2, BTN_TOOL_PEN, BTN_TOOL_RUBBER,
96 BTN_TOOL_MOUSE, BTN_TOOL_FINGER,
97 BTN_0, BTN_1, BTN_2, BTN_3, BTN_4, BTN_5, BTN_6, BTN_7, BTN_8,
98};
99
100static const int hw_mscevents[] = {
101 MSC_SERIAL,
102};
103
104static void hanwang_parse_packet(struct hanwang *hanwang)
105{
106 unsigned char *data = hanwang->data;
107 struct input_dev *input_dev = hanwang->dev;
108 struct usb_device *dev = hanwang->usbdev;
109 enum hanwang_tablet_type type = hanwang->features->type;
110 int i;
111 u16 p;
112
113 if (type == HANWANG_ART_MASTER_II) {
114 hanwang->current_tool = BTN_TOOL_PEN;
115 hanwang->current_id = STYLUS_DEVICE_ID;
116 }
117
118 switch (data[0]) {
119 case 0x02: /* data packet */
120 switch (data[1]) {
121 case 0x80: /* tool prox out */
122 if (type != HANWANG_ART_MASTER_II) {
123 hanwang->current_id = 0;
124 input_report_key(input_dev,
125 hanwang->current_tool, 0);
126 }
127 break;
128
129 case 0x00: /* artmaster ii pen leave */
130 if (type == HANWANG_ART_MASTER_II) {
131 hanwang->current_id = 0;
132 input_report_key(input_dev,
133 hanwang->current_tool, 0);
134 }
135 break;
136
137 case 0xc2: /* first time tool prox in */
138 switch (data[3] & 0xf0) {
139 case 0x20: /* art_master III */
140 case 0x30: /* art_master_HD */
141 hanwang->current_id = STYLUS_DEVICE_ID;
142 hanwang->current_tool = BTN_TOOL_PEN;
143 input_report_key(input_dev, BTN_TOOL_PEN, 1);
144 break;
145 case 0xa0: /* art_master III */
146 case 0xb0: /* art_master_HD */
147 hanwang->current_id = ERASER_DEVICE_ID;
148 hanwang->current_tool = BTN_TOOL_RUBBER;
149 input_report_key(input_dev, BTN_TOOL_RUBBER, 1);
150 break;
151 default:
152 hanwang->current_id = 0;
153 dev_dbg(&dev->dev,
154 "unknown tablet tool %02x\n", data[0]);
155 break;
156 }
157 break;
158
159 default: /* tool data packet */
160 switch (type) {
161 case HANWANG_ART_MASTER_III:
162 p = (data[6] << 3) |
163 ((data[7] & 0xc0) >> 5) |
164 (data[1] & 0x01);
165 break;
166
167 case HANWANG_ART_MASTER_HD:
168 case HANWANG_ART_MASTER_II:
169 p = (data[7] >> 6) | (data[6] << 2);
170 break;
171
172 default:
173 p = 0;
174 break;
175 }
176
177 input_report_abs(input_dev, ABS_X,
178 be16_to_cpup((__be16 *)&data[2]));
179 input_report_abs(input_dev, ABS_Y,
180 be16_to_cpup((__be16 *)&data[4]));
181 input_report_abs(input_dev, ABS_PRESSURE, p);
182 input_report_abs(input_dev, ABS_TILT_X, data[7] & 0x3f);
183 input_report_abs(input_dev, ABS_TILT_Y, data[8] & 0x7f);
184 input_report_key(input_dev, BTN_STYLUS, data[1] & 0x02);
185
186 if (type != HANWANG_ART_MASTER_II)
187 input_report_key(input_dev, BTN_STYLUS2,
188 data[1] & 0x04);
189 else
190 input_report_key(input_dev, BTN_TOOL_PEN, 1);
191
192 break;
193 }
194
195 input_report_abs(input_dev, ABS_MISC, hanwang->current_id);
196 input_event(input_dev, EV_MSC, MSC_SERIAL,
197 hanwang->features->pid);
198 break;
199
200 case 0x0c:
201 /* roll wheel */
202 hanwang->current_id = PAD_DEVICE_ID;
203
204 switch (type) {
205 case HANWANG_ART_MASTER_III:
206 input_report_key(input_dev, BTN_TOOL_FINGER,
207 data[1] || data[2] || data[3]);
208 input_report_abs(input_dev, ABS_WHEEL, data[1]);
209 input_report_key(input_dev, BTN_0, data[2]);
210 for (i = 0; i < 8; i++)
211 input_report_key(input_dev,
212 BTN_1 + i, data[3] & (1 << i));
213 break;
214
215 case HANWANG_ART_MASTER_HD:
216 input_report_key(input_dev, BTN_TOOL_FINGER, data[1] ||
217 data[2] || data[3] || data[4] ||
218 data[5] || data[6]);
219 input_report_abs(input_dev, ABS_RX,
220 ((data[1] & 0x1f) << 8) | data[2]);
221 input_report_abs(input_dev, ABS_RY,
222 ((data[3] & 0x1f) << 8) | data[4]);
223 input_report_key(input_dev, BTN_0, data[5] & 0x01);
224 for (i = 0; i < 4; i++) {
225 input_report_key(input_dev,
226 BTN_1 + i, data[5] & (1 << i));
227 input_report_key(input_dev,
228 BTN_5 + i, data[6] & (1 << i));
229 }
230 break;
231
232 case HANWANG_ART_MASTER_II:
233 dev_dbg(&dev->dev, "error packet %02x\n", data[0]);
234 return;
235 }
236
237 input_report_abs(input_dev, ABS_MISC, hanwang->current_id);
238 input_event(input_dev, EV_MSC, MSC_SERIAL, 0xffffffff);
239 break;
240
241 default:
242 dev_dbg(&dev->dev, "error packet %02x\n", data[0]);
243 break;
244 }
245
246 input_sync(input_dev);
247}
248
249static void hanwang_irq(struct urb *urb)
250{
251 struct hanwang *hanwang = urb->context;
252 struct usb_device *dev = hanwang->usbdev;
253 int retval;
254
255 switch (urb->status) {
256 case 0:
257 /* success */;
258 hanwang_parse_packet(hanwang);
259 break;
260 case -ECONNRESET:
261 case -ENOENT:
262 case -ESHUTDOWN:
263 /* this urb is terminated, clean up */
264 dev_err(&dev->dev, "%s - urb shutting down with status: %d",
265 __func__, urb->status);
266 return;
267 default:
268 dev_err(&dev->dev, "%s - nonzero urb status received: %d",
269 __func__, urb->status);
270 break;
271 }
272
273 retval = usb_submit_urb(urb, GFP_ATOMIC);
274 if (retval)
275 dev_err(&dev->dev, "%s - usb_submit_urb failed with result %d",
276 __func__, retval);
277}
278
279static int hanwang_open(struct input_dev *dev)
280{
281 struct hanwang *hanwang = input_get_drvdata(dev);
282
283 hanwang->irq->dev = hanwang->usbdev;
284 if (usb_submit_urb(hanwang->irq, GFP_KERNEL))
285 return -EIO;
286
287 return 0;
288}
289
290static void hanwang_close(struct input_dev *dev)
291{
292 struct hanwang *hanwang = input_get_drvdata(dev);
293
294 usb_kill_urb(hanwang->irq);
295}
296
297static bool get_features(struct usb_device *dev, struct hanwang *hanwang)
298{
299 int i;
300
301 for (i = 0; i < ARRAY_SIZE(features_array); i++) {
302 if (le16_to_cpu(dev->descriptor.idProduct) ==
303 features_array[i].pid) {
304 hanwang->features = &features_array[i];
305 return true;
306 }
307 }
308
309 return false;
310}
311
312
313static int hanwang_probe(struct usb_interface *intf, const struct usb_device_id *id)
314{
315 struct usb_device *dev = interface_to_usbdev(intf);
316 struct usb_endpoint_descriptor *endpoint;
317 struct hanwang *hanwang;
318 struct input_dev *input_dev;
319 int error;
320 int i;
321
322 if (intf->cur_altsetting->desc.bNumEndpoints < 1)
323 return -ENODEV;
324
325 hanwang = kzalloc(sizeof(*hanwang), GFP_KERNEL);
326 input_dev = input_allocate_device();
327 if (!hanwang || !input_dev) {
328 error = -ENOMEM;
329 goto fail1;
330 }
331
332 if (!get_features(dev, hanwang)) {
333 error = -ENXIO;
334 goto fail1;
335 }
336
337 hanwang->data = usb_alloc_coherent(dev, hanwang->features->pkg_len,
338 GFP_KERNEL, &hanwang->data_dma);
339 if (!hanwang->data) {
340 error = -ENOMEM;
341 goto fail1;
342 }
343
344 hanwang->irq = usb_alloc_urb(0, GFP_KERNEL);
345 if (!hanwang->irq) {
346 error = -ENOMEM;
347 goto fail2;
348 }
349
350 hanwang->usbdev = dev;
351 hanwang->dev = input_dev;
352
353 usb_make_path(dev, hanwang->phys, sizeof(hanwang->phys));
354 strlcat(hanwang->phys, "/input0", sizeof(hanwang->phys));
355
356 strscpy(hanwang->name, hanwang->features->name, sizeof(hanwang->name));
357 input_dev->name = hanwang->name;
358 input_dev->phys = hanwang->phys;
359 usb_to_input_id(dev, &input_dev->id);
360 input_dev->dev.parent = &intf->dev;
361
362 input_set_drvdata(input_dev, hanwang);
363
364 input_dev->open = hanwang_open;
365 input_dev->close = hanwang_close;
366
367 for (i = 0; i < ARRAY_SIZE(hw_eventtypes); ++i)
368 __set_bit(hw_eventtypes[i], input_dev->evbit);
369
370 for (i = 0; i < ARRAY_SIZE(hw_absevents); ++i)
371 __set_bit(hw_absevents[i], input_dev->absbit);
372
373 for (i = 0; i < ARRAY_SIZE(hw_btnevents); ++i)
374 __set_bit(hw_btnevents[i], input_dev->keybit);
375
376 for (i = 0; i < ARRAY_SIZE(hw_mscevents); ++i)
377 __set_bit(hw_mscevents[i], input_dev->mscbit);
378
379 input_set_abs_params(input_dev, ABS_X,
380 0, hanwang->features->max_x, 4, 0);
381 input_set_abs_params(input_dev, ABS_Y,
382 0, hanwang->features->max_y, 4, 0);
383 input_set_abs_params(input_dev, ABS_TILT_X,
384 0, hanwang->features->max_tilt_x, 0, 0);
385 input_set_abs_params(input_dev, ABS_TILT_Y,
386 0, hanwang->features->max_tilt_y, 0, 0);
387 input_set_abs_params(input_dev, ABS_PRESSURE,
388 0, hanwang->features->max_pressure, 0, 0);
389
390 endpoint = &intf->cur_altsetting->endpoint[0].desc;
391 usb_fill_int_urb(hanwang->irq, dev,
392 usb_rcvintpipe(dev, endpoint->bEndpointAddress),
393 hanwang->data, hanwang->features->pkg_len,
394 hanwang_irq, hanwang, endpoint->bInterval);
395 hanwang->irq->transfer_dma = hanwang->data_dma;
396 hanwang->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
397
398 error = input_register_device(hanwang->dev);
399 if (error)
400 goto fail3;
401
402 usb_set_intfdata(intf, hanwang);
403
404 return 0;
405
406 fail3: usb_free_urb(hanwang->irq);
407 fail2: usb_free_coherent(dev, hanwang->features->pkg_len,
408 hanwang->data, hanwang->data_dma);
409 fail1: input_free_device(input_dev);
410 kfree(hanwang);
411 return error;
412
413}
414
415static void hanwang_disconnect(struct usb_interface *intf)
416{
417 struct hanwang *hanwang = usb_get_intfdata(intf);
418
419 input_unregister_device(hanwang->dev);
420 usb_free_urb(hanwang->irq);
421 usb_free_coherent(interface_to_usbdev(intf),
422 hanwang->features->pkg_len, hanwang->data,
423 hanwang->data_dma);
424 kfree(hanwang);
425 usb_set_intfdata(intf, NULL);
426}
427
428static const struct usb_device_id hanwang_ids[] = {
429 { HANWANG_TABLET_DEVICE(USB_VENDOR_ID_HANWANG, HANWANG_TABLET_INT_CLASS,
430 HANWANG_TABLET_INT_SUB_CLASS, HANWANG_TABLET_INT_PROTOCOL) },
431 {}
432};
433
434MODULE_DEVICE_TABLE(usb, hanwang_ids);
435
436static struct usb_driver hanwang_driver = {
437 .name = "hanwang",
438 .probe = hanwang_probe,
439 .disconnect = hanwang_disconnect,
440 .id_table = hanwang_ids,
441};
442
443module_usb_driver(hanwang_driver);
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
36MODULE_AUTHOR(DRIVER_AUTHOR);
37MODULE_DESCRIPTION(DRIVER_DESC);
38MODULE_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
63enum hanwang_tablet_type {
64 HANWANG_ART_MASTER_III,
65 HANWANG_ART_MASTER_HD,
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};
103
104static const int hw_eventtypes[] = {
105 EV_KEY, EV_ABS, EV_MSC,
106};
107
108static const int hw_absevents[] = {
109 ABS_X, ABS_Y, ABS_TILT_X, ABS_TILT_Y, ABS_WHEEL,
110 ABS_RX, ABS_RY, ABS_PRESSURE, ABS_MISC,
111};
112
113static const int hw_btnevents[] = {
114 BTN_STYLUS, BTN_STYLUS2, BTN_TOOL_PEN, BTN_TOOL_RUBBER,
115 BTN_TOOL_MOUSE, BTN_TOOL_FINGER,
116 BTN_0, BTN_1, BTN_2, BTN_3, BTN_4, BTN_5, BTN_6, BTN_7, BTN_8,
117};
118
119static const int hw_mscevents[] = {
120 MSC_SERIAL,
121};
122
123static void hanwang_parse_packet(struct hanwang *hanwang)
124{
125 unsigned char *data = hanwang->data;
126 struct input_dev *input_dev = hanwang->dev;
127 struct usb_device *dev = hanwang->usbdev;
128 enum hanwang_tablet_type type = hanwang->features->type;
129 int i;
130 u16 x, y, p;
131
132 switch (data[0]) {
133 case 0x02: /* data packet */
134 switch (data[1]) {
135 case 0x80: /* tool prox out */
136 hanwang->current_id = 0;
137 input_report_key(input_dev, hanwang->current_tool, 0);
138 break;
139
140 case 0xc2: /* first time tool prox in */
141 switch (data[3] & 0xf0) {
142 case 0x20: /* art_master III */
143 case 0x30: /* art_master_HD */
144 hanwang->current_id = STYLUS_DEVICE_ID;
145 hanwang->current_tool = BTN_TOOL_PEN;
146 input_report_key(input_dev, BTN_TOOL_PEN, 1);
147 break;
148 case 0xa0: /* art_master III */
149 case 0xb0: /* art_master_HD */
150 hanwang->current_id = ERASER_DEVICE_ID;
151 hanwang->current_tool = BTN_TOOL_RUBBER;
152 input_report_key(input_dev, BTN_TOOL_RUBBER, 1);
153 break;
154 default:
155 hanwang->current_id = 0;
156 dev_dbg(&dev->dev,
157 "unknown tablet tool %02x ", data[0]);
158 break;
159 }
160 break;
161
162 default: /* tool data packet */
163 x = (data[2] << 8) | data[3];
164 y = (data[4] << 8) | data[5];
165
166 switch (type) {
167 case HANWANG_ART_MASTER_III:
168 p = (data[6] << 3) |
169 ((data[7] & 0xc0) >> 5) |
170 (data[1] & 0x01);
171 break;
172
173 case HANWANG_ART_MASTER_HD:
174 p = (data[7] >> 6) | (data[6] << 2);
175 break;
176
177 default:
178 p = 0;
179 break;
180 }
181
182 input_report_abs(input_dev, ABS_X,
183 le16_to_cpup((__le16 *)&x));
184 input_report_abs(input_dev, ABS_Y,
185 le16_to_cpup((__le16 *)&y));
186 input_report_abs(input_dev, ABS_PRESSURE,
187 le16_to_cpup((__le16 *)&p));
188 input_report_abs(input_dev, ABS_TILT_X, data[7] & 0x3f);
189 input_report_abs(input_dev, ABS_TILT_Y, data[8] & 0x7f);
190 input_report_key(input_dev, BTN_STYLUS, data[1] & 0x02);
191 input_report_key(input_dev, BTN_STYLUS2, data[1] & 0x04);
192 break;
193 }
194 input_report_abs(input_dev, ABS_MISC, hanwang->current_id);
195 input_event(input_dev, EV_MSC, MSC_SERIAL,
196 hanwang->features->pid);
197 break;
198
199 case 0x0c:
200 /* roll wheel */
201 hanwang->current_id = PAD_DEVICE_ID;
202
203 switch (type) {
204 case HANWANG_ART_MASTER_III:
205 input_report_key(input_dev, BTN_TOOL_FINGER, data[1] ||
206 data[2] || data[3]);
207 input_report_abs(input_dev, ABS_WHEEL, data[1]);
208 input_report_key(input_dev, BTN_0, data[2]);
209 for (i = 0; i < 8; i++)
210 input_report_key(input_dev,
211 BTN_1 + i, data[3] & (1 << i));
212 break;
213
214 case HANWANG_ART_MASTER_HD:
215 input_report_key(input_dev, BTN_TOOL_FINGER, data[1] ||
216 data[2] || data[3] || data[4] ||
217 data[5] || data[6]);
218 input_report_abs(input_dev, ABS_RX,
219 ((data[1] & 0x1f) << 8) | data[2]);
220 input_report_abs(input_dev, ABS_RY,
221 ((data[3] & 0x1f) << 8) | data[4]);
222 input_report_key(input_dev, BTN_0, data[5] & 0x01);
223 for (i = 0; i < 4; i++) {
224 input_report_key(input_dev,
225 BTN_1 + i, data[5] & (1 << i));
226 input_report_key(input_dev,
227 BTN_5 + i, data[6] & (1 << i));
228 }
229 break;
230 }
231
232 input_report_abs(input_dev, ABS_MISC, hanwang->current_id);
233 input_event(input_dev, EV_MSC, MSC_SERIAL, 0xffffffff);
234 break;
235
236 default:
237 dev_dbg(&dev->dev, "error packet %02x ", data[0]);
238 break;
239 }
240
241 input_sync(input_dev);
242}
243
244static void hanwang_irq(struct urb *urb)
245{
246 struct hanwang *hanwang = urb->context;
247 struct usb_device *dev = hanwang->usbdev;
248 int retval;
249
250 switch (urb->status) {
251 case 0:
252 /* success */;
253 hanwang_parse_packet(hanwang);
254 break;
255 case -ECONNRESET:
256 case -ENOENT:
257 case -ESHUTDOWN:
258 /* this urb is terminated, clean up */
259 dev_err(&dev->dev, "%s - urb shutting down with status: %d",
260 __func__, urb->status);
261 return;
262 default:
263 dev_err(&dev->dev, "%s - nonzero urb status received: %d",
264 __func__, urb->status);
265 break;
266 }
267
268 retval = usb_submit_urb(urb, GFP_ATOMIC);
269 if (retval)
270 dev_err(&dev->dev, "%s - usb_submit_urb failed with result %d",
271 __func__, retval);
272}
273
274static int hanwang_open(struct input_dev *dev)
275{
276 struct hanwang *hanwang = input_get_drvdata(dev);
277
278 hanwang->irq->dev = hanwang->usbdev;
279 if (usb_submit_urb(hanwang->irq, GFP_KERNEL))
280 return -EIO;
281
282 return 0;
283}
284
285static void hanwang_close(struct input_dev *dev)
286{
287 struct hanwang *hanwang = input_get_drvdata(dev);
288
289 usb_kill_urb(hanwang->irq);
290}
291
292static bool get_features(struct usb_device *dev, struct hanwang *hanwang)
293{
294 int i;
295
296 for (i = 0; i < ARRAY_SIZE(features_array); i++) {
297 if (le16_to_cpu(dev->descriptor.idProduct) ==
298 features_array[i].pid) {
299 hanwang->features = &features_array[i];
300 return true;
301 }
302 }
303
304 return false;
305}
306
307
308static int hanwang_probe(struct usb_interface *intf, const struct usb_device_id *id)
309{
310 struct usb_device *dev = interface_to_usbdev(intf);
311 struct usb_endpoint_descriptor *endpoint;
312 struct hanwang *hanwang;
313 struct input_dev *input_dev;
314 int error;
315 int i;
316
317 hanwang = kzalloc(sizeof(struct hanwang), GFP_KERNEL);
318 input_dev = input_allocate_device();
319 if (!hanwang || !input_dev) {
320 error = -ENOMEM;
321 goto fail1;
322 }
323
324 if (!get_features(dev, hanwang)) {
325 error = -ENXIO;
326 goto fail1;
327 }
328
329 hanwang->data = usb_alloc_coherent(dev, hanwang->features->pkg_len,
330 GFP_KERNEL, &hanwang->data_dma);
331 if (!hanwang->data) {
332 error = -ENOMEM;
333 goto fail1;
334 }
335
336 hanwang->irq = usb_alloc_urb(0, GFP_KERNEL);
337 if (!hanwang->irq) {
338 error = -ENOMEM;
339 goto fail2;
340 }
341
342 hanwang->usbdev = dev;
343 hanwang->dev = input_dev;
344
345 usb_make_path(dev, hanwang->phys, sizeof(hanwang->phys));
346 strlcat(hanwang->phys, "/input0", sizeof(hanwang->phys));
347
348 strlcpy(hanwang->name, hanwang->features->name, sizeof(hanwang->name));
349 input_dev->name = hanwang->name;
350 input_dev->phys = hanwang->phys;
351 usb_to_input_id(dev, &input_dev->id);
352 input_dev->dev.parent = &intf->dev;
353
354 input_set_drvdata(input_dev, hanwang);
355
356 input_dev->open = hanwang_open;
357 input_dev->close = hanwang_close;
358
359 for (i = 0; i < ARRAY_SIZE(hw_eventtypes); ++i)
360 __set_bit(hw_eventtypes[i], input_dev->evbit);
361
362 for (i = 0; i < ARRAY_SIZE(hw_absevents); ++i)
363 __set_bit(hw_absevents[i], input_dev->absbit);
364
365 for (i = 0; i < ARRAY_SIZE(hw_btnevents); ++i)
366 __set_bit(hw_btnevents[i], input_dev->keybit);
367
368 for (i = 0; i < ARRAY_SIZE(hw_mscevents); ++i)
369 __set_bit(hw_mscevents[i], input_dev->mscbit);
370
371 input_set_abs_params(input_dev, ABS_X,
372 0, hanwang->features->max_x, 4, 0);
373 input_set_abs_params(input_dev, ABS_Y,
374 0, hanwang->features->max_y, 4, 0);
375 input_set_abs_params(input_dev, ABS_TILT_X,
376 0, hanwang->features->max_tilt_x, 0, 0);
377 input_set_abs_params(input_dev, ABS_TILT_Y,
378 0, hanwang->features->max_tilt_y, 0, 0);
379 input_set_abs_params(input_dev, ABS_PRESSURE,
380 0, hanwang->features->max_pressure, 0, 0);
381
382 endpoint = &intf->cur_altsetting->endpoint[0].desc;
383 usb_fill_int_urb(hanwang->irq, dev,
384 usb_rcvintpipe(dev, endpoint->bEndpointAddress),
385 hanwang->data, hanwang->features->pkg_len,
386 hanwang_irq, hanwang, endpoint->bInterval);
387 hanwang->irq->transfer_dma = hanwang->data_dma;
388 hanwang->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
389
390 error = input_register_device(hanwang->dev);
391 if (error)
392 goto fail3;
393
394 usb_set_intfdata(intf, hanwang);
395
396 return 0;
397
398 fail3: usb_free_urb(hanwang->irq);
399 fail2: usb_free_coherent(dev, hanwang->features->pkg_len,
400 hanwang->data, hanwang->data_dma);
401 fail1: input_free_device(input_dev);
402 kfree(hanwang);
403 return error;
404
405}
406
407static void hanwang_disconnect(struct usb_interface *intf)
408{
409 struct hanwang *hanwang = usb_get_intfdata(intf);
410
411 input_unregister_device(hanwang->dev);
412 usb_free_urb(hanwang->irq);
413 usb_free_coherent(interface_to_usbdev(intf),
414 hanwang->features->pkg_len, hanwang->data,
415 hanwang->data_dma);
416 kfree(hanwang);
417 usb_set_intfdata(intf, NULL);
418}
419
420static const struct usb_device_id hanwang_ids[] = {
421 { HANWANG_TABLET_DEVICE(USB_VENDOR_ID_HANWANG, HANWANG_TABLET_INT_CLASS,
422 HANWANG_TABLET_INT_SUB_CLASS, HANWANG_TABLET_INT_PROTOCOL) },
423 {}
424};
425
426MODULE_DEVICE_TABLE(usb, hanwang_ids);
427
428static struct usb_driver hanwang_driver = {
429 .name = "hanwang",
430 .probe = hanwang_probe,
431 .disconnect = hanwang_disconnect,
432 .id_table = hanwang_ids,
433};
434
435static int __init hanwang_init(void)
436{
437 return usb_register(&hanwang_driver);
438}
439
440static void __exit hanwang_exit(void)
441{
442 usb_deregister(&hanwang_driver);
443}
444
445module_init(hanwang_init);
446module_exit(hanwang_exit);