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Commit | Line | Data |
---|---|---|
3bea733a | 1 | /* |
4104d13f | 2 | * drivers/input/tablet/wacom_sys.c |
3bea733a | 3 | * |
232f5693 | 4 | * USB Wacom tablet support - system specific code |
3bea733a PC |
5 | */ |
6 | ||
7 | /* | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | */ | |
13 | ||
3bea733a | 14 | #include "wacom_wac.h" |
51269fe8 | 15 | #include "wacom.h" |
3bea733a | 16 | |
545f4e99 PC |
17 | /* defines to get HID report descriptor */ |
18 | #define HID_DEVICET_HID (USB_TYPE_CLASS | 0x01) | |
19 | #define HID_DEVICET_REPORT (USB_TYPE_CLASS | 0x02) | |
20 | #define HID_USAGE_UNDEFINED 0x00 | |
21 | #define HID_USAGE_PAGE 0x05 | |
22 | #define HID_USAGE_PAGE_DIGITIZER 0x0d | |
23 | #define HID_USAGE_PAGE_DESKTOP 0x01 | |
24 | #define HID_USAGE 0x09 | |
25 | #define HID_USAGE_X 0x30 | |
26 | #define HID_USAGE_Y 0x31 | |
27 | #define HID_USAGE_X_TILT 0x3d | |
28 | #define HID_USAGE_Y_TILT 0x3e | |
29 | #define HID_USAGE_FINGER 0x22 | |
30 | #define HID_USAGE_STYLUS 0x20 | |
4134361a CB |
31 | #define HID_COLLECTION 0xa1 |
32 | #define HID_COLLECTION_LOGICAL 0x02 | |
33 | #define HID_COLLECTION_END 0xc0 | |
545f4e99 PC |
34 | |
35 | enum { | |
36 | WCM_UNDEFINED = 0, | |
37 | WCM_DESKTOP, | |
38 | WCM_DIGITIZER, | |
39 | }; | |
40 | ||
41 | struct hid_descriptor { | |
42 | struct usb_descriptor_header header; | |
43 | __le16 bcdHID; | |
44 | u8 bCountryCode; | |
45 | u8 bNumDescriptors; | |
46 | u8 bDescriptorType; | |
47 | __le16 wDescriptorLength; | |
48 | } __attribute__ ((packed)); | |
49 | ||
50 | /* defines to get/set USB message */ | |
3bea733a PC |
51 | #define USB_REQ_GET_REPORT 0x01 |
52 | #define USB_REQ_SET_REPORT 0x09 | |
5d7e7d47 | 53 | |
545f4e99 | 54 | #define WAC_HID_FEATURE_REPORT 0x03 |
a417ea44 | 55 | #define WAC_MSG_RETRIES 5 |
3bea733a | 56 | |
5d7e7d47 EH |
57 | #define WAC_CMD_LED_CONTROL 0x20 |
58 | #define WAC_CMD_ICON_START 0x21 | |
59 | #define WAC_CMD_ICON_XFER 0x23 | |
60 | #define WAC_CMD_RETRIES 10 | |
61 | ||
62 | static int wacom_get_report(struct usb_interface *intf, u8 type, u8 id, | |
63 | void *buf, size_t size, unsigned int retries) | |
3bea733a | 64 | { |
5d7e7d47 EH |
65 | struct usb_device *dev = interface_to_usbdev(intf); |
66 | int retval; | |
67 | ||
68 | do { | |
69 | retval = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), | |
70 | USB_REQ_GET_REPORT, | |
6e8ec537 CB |
71 | USB_DIR_IN | USB_TYPE_CLASS | |
72 | USB_RECIP_INTERFACE, | |
5d7e7d47 EH |
73 | (type << 8) + id, |
74 | intf->altsetting[0].desc.bInterfaceNumber, | |
75 | buf, size, 100); | |
76 | } while ((retval == -ETIMEDOUT || retval == -EPIPE) && --retries); | |
77 | ||
78 | return retval; | |
3bea733a PC |
79 | } |
80 | ||
5d7e7d47 EH |
81 | static int wacom_set_report(struct usb_interface *intf, u8 type, u8 id, |
82 | void *buf, size_t size, unsigned int retries) | |
3bea733a | 83 | { |
5d7e7d47 EH |
84 | struct usb_device *dev = interface_to_usbdev(intf); |
85 | int retval; | |
86 | ||
87 | do { | |
88 | retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
89 | USB_REQ_SET_REPORT, | |
90 | USB_TYPE_CLASS | USB_RECIP_INTERFACE, | |
91 | (type << 8) + id, | |
92 | intf->altsetting[0].desc.bInterfaceNumber, | |
93 | buf, size, 1000); | |
94 | } while ((retval == -ETIMEDOUT || retval == -EPIPE) && --retries); | |
95 | ||
96 | return retval; | |
3bea733a PC |
97 | } |
98 | ||
54c9b226 | 99 | static void wacom_sys_irq(struct urb *urb) |
3bea733a PC |
100 | { |
101 | struct wacom *wacom = urb->context; | |
3bea733a PC |
102 | int retval; |
103 | ||
104 | switch (urb->status) { | |
105 | case 0: | |
106 | /* success */ | |
107 | break; | |
108 | case -ECONNRESET: | |
109 | case -ENOENT: | |
110 | case -ESHUTDOWN: | |
111 | /* this urb is terminated, clean up */ | |
ea3e6c59 | 112 | dbg("%s - urb shutting down with status: %d", __func__, urb->status); |
3bea733a PC |
113 | return; |
114 | default: | |
ea3e6c59 | 115 | dbg("%s - nonzero urb status received: %d", __func__, urb->status); |
3bea733a PC |
116 | goto exit; |
117 | } | |
118 | ||
95dd3b30 | 119 | wacom_wac_irq(&wacom->wacom_wac, urb->actual_length); |
3bea733a PC |
120 | |
121 | exit: | |
e7224094 | 122 | usb_mark_last_busy(wacom->usbdev); |
73a97f4f | 123 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
3bea733a PC |
124 | if (retval) |
125 | err ("%s - usb_submit_urb failed with result %d", | |
ea3e6c59 | 126 | __func__, retval); |
3bea733a PC |
127 | } |
128 | ||
3bea733a PC |
129 | static int wacom_open(struct input_dev *dev) |
130 | { | |
7791bdae | 131 | struct wacom *wacom = input_get_drvdata(dev); |
f6cd3783 | 132 | int retval = 0; |
3bea733a | 133 | |
f6cd3783 | 134 | if (usb_autopm_get_interface(wacom->intf) < 0) |
3bea733a | 135 | return -EIO; |
f6cd3783 DT |
136 | |
137 | mutex_lock(&wacom->lock); | |
e7224094 ON |
138 | |
139 | if (usb_submit_urb(wacom->irq, GFP_KERNEL)) { | |
f6cd3783 DT |
140 | retval = -EIO; |
141 | goto out; | |
e7224094 ON |
142 | } |
143 | ||
51269fe8 | 144 | wacom->open = true; |
e7224094 | 145 | wacom->intf->needs_remote_wakeup = 1; |
3bea733a | 146 | |
f6cd3783 | 147 | out: |
e7224094 | 148 | mutex_unlock(&wacom->lock); |
62ecae09 | 149 | usb_autopm_put_interface(wacom->intf); |
f6cd3783 | 150 | return retval; |
3bea733a PC |
151 | } |
152 | ||
153 | static void wacom_close(struct input_dev *dev) | |
154 | { | |
7791bdae | 155 | struct wacom *wacom = input_get_drvdata(dev); |
62ecae09 DT |
156 | int autopm_error; |
157 | ||
158 | autopm_error = usb_autopm_get_interface(wacom->intf); | |
3bea733a | 159 | |
e7224094 | 160 | mutex_lock(&wacom->lock); |
3bea733a | 161 | usb_kill_urb(wacom->irq); |
51269fe8 | 162 | wacom->open = false; |
e7224094 ON |
163 | wacom->intf->needs_remote_wakeup = 0; |
164 | mutex_unlock(&wacom->lock); | |
f6cd3783 | 165 | |
62ecae09 DT |
166 | if (!autopm_error) |
167 | usb_autopm_put_interface(wacom->intf); | |
3bea733a PC |
168 | } |
169 | ||
4134361a CB |
170 | static int wacom_parse_logical_collection(unsigned char *report, |
171 | struct wacom_features *features) | |
172 | { | |
173 | int length = 0; | |
174 | ||
175 | if (features->type == BAMBOO_PT) { | |
176 | ||
177 | /* Logical collection is only used by 3rd gen Bamboo Touch */ | |
178 | features->pktlen = WACOM_PKGLEN_BBTOUCH3; | |
8b4a0c1f | 179 | features->device_type = BTN_TOOL_FINGER; |
4134361a CB |
180 | |
181 | /* | |
182 | * Stylus and Touch have same active area | |
183 | * so compute physical size based on stylus | |
184 | * data before its overwritten. | |
185 | */ | |
186 | features->x_phy = | |
187 | (features->x_max * features->x_resolution) / 100; | |
188 | features->y_phy = | |
189 | (features->y_max * features->y_resolution) / 100; | |
190 | ||
191 | features->x_max = features->y_max = | |
192 | get_unaligned_le16(&report[10]); | |
193 | ||
194 | length = 11; | |
195 | } | |
196 | return length; | |
197 | } | |
198 | ||
428f8588 CB |
199 | /* |
200 | * Interface Descriptor of wacom devices can be incomplete and | |
201 | * inconsistent so wacom_features table is used to store stylus | |
202 | * device's packet lengths, various maximum values, and tablet | |
203 | * resolution based on product ID's. | |
204 | * | |
205 | * For devices that contain 2 interfaces, wacom_features table is | |
206 | * inaccurate for the touch interface. Since the Interface Descriptor | |
207 | * for touch interfaces has pretty complete data, this function exists | |
208 | * to query tablet for this missing information instead of hard coding in | |
209 | * an additional table. | |
210 | * | |
211 | * A typical Interface Descriptor for a stylus will contain a | |
212 | * boot mouse application collection that is not of interest and this | |
213 | * function will ignore it. | |
214 | * | |
215 | * It also contains a digitizer application collection that also is not | |
216 | * of interest since any information it contains would be duplicate | |
217 | * of what is in wacom_features. Usually it defines a report of an array | |
218 | * of bytes that could be used as max length of the stylus packet returned. | |
219 | * If it happens to define a Digitizer-Stylus Physical Collection then | |
220 | * the X and Y logical values contain valid data but it is ignored. | |
221 | * | |
222 | * A typical Interface Descriptor for a touch interface will contain a | |
223 | * Digitizer-Finger Physical Collection which will define both logical | |
224 | * X/Y maximum as well as the physical size of tablet. Since touch | |
225 | * interfaces haven't supported pressure or distance, this is enough | |
226 | * information to override invalid values in the wacom_features table. | |
4134361a CB |
227 | * |
228 | * 3rd gen Bamboo Touch no longer define a Digitizer-Finger Pysical | |
229 | * Collection. Instead they define a Logical Collection with a single | |
230 | * Logical Maximum for both X and Y. | |
428f8588 CB |
231 | */ |
232 | static int wacom_parse_hid(struct usb_interface *intf, | |
233 | struct hid_descriptor *hid_desc, | |
ec67bbed | 234 | struct wacom_features *features) |
545f4e99 PC |
235 | { |
236 | struct usb_device *dev = interface_to_usbdev(intf); | |
ec67bbed PC |
237 | char limit = 0; |
238 | /* result has to be defined as int for some devices */ | |
239 | int result = 0; | |
545f4e99 PC |
240 | int i = 0, usage = WCM_UNDEFINED, finger = 0, pen = 0; |
241 | unsigned char *report; | |
242 | ||
243 | report = kzalloc(hid_desc->wDescriptorLength, GFP_KERNEL); | |
244 | if (!report) | |
245 | return -ENOMEM; | |
246 | ||
247 | /* retrive report descriptors */ | |
248 | do { | |
249 | result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), | |
250 | USB_REQ_GET_DESCRIPTOR, | |
251 | USB_RECIP_INTERFACE | USB_DIR_IN, | |
252 | HID_DEVICET_REPORT << 8, | |
253 | intf->altsetting[0].desc.bInterfaceNumber, /* interface */ | |
254 | report, | |
255 | hid_desc->wDescriptorLength, | |
256 | 5000); /* 5 secs */ | |
a417ea44 | 257 | } while (result < 0 && limit++ < WAC_MSG_RETRIES); |
545f4e99 | 258 | |
384318ec | 259 | /* No need to parse the Descriptor. It isn't an error though */ |
545f4e99 PC |
260 | if (result < 0) |
261 | goto out; | |
262 | ||
263 | for (i = 0; i < hid_desc->wDescriptorLength; i++) { | |
264 | ||
265 | switch (report[i]) { | |
266 | case HID_USAGE_PAGE: | |
267 | switch (report[i + 1]) { | |
268 | case HID_USAGE_PAGE_DIGITIZER: | |
269 | usage = WCM_DIGITIZER; | |
270 | i++; | |
271 | break; | |
272 | ||
273 | case HID_USAGE_PAGE_DESKTOP: | |
274 | usage = WCM_DESKTOP; | |
275 | i++; | |
276 | break; | |
277 | } | |
278 | break; | |
279 | ||
280 | case HID_USAGE: | |
281 | switch (report[i + 1]) { | |
282 | case HID_USAGE_X: | |
283 | if (usage == WCM_DESKTOP) { | |
284 | if (finger) { | |
84eb5aa6 | 285 | features->device_type = BTN_TOOL_FINGER; |
ec67bbed PC |
286 | if (features->type == TABLETPC2FG) { |
287 | /* need to reset back */ | |
288 | features->pktlen = WACOM_PKGLEN_TPC2FG; | |
ec67bbed | 289 | } |
4a88081e PC |
290 | if (features->type == BAMBOO_PT) { |
291 | /* need to reset back */ | |
292 | features->pktlen = WACOM_PKGLEN_BBTOUCH; | |
4a88081e PC |
293 | features->x_phy = |
294 | get_unaligned_le16(&report[i + 5]); | |
295 | features->x_max = | |
296 | get_unaligned_le16(&report[i + 8]); | |
297 | i += 15; | |
298 | } else { | |
299 | features->x_max = | |
300 | get_unaligned_le16(&report[i + 3]); | |
301 | features->x_phy = | |
302 | get_unaligned_le16(&report[i + 6]); | |
303 | features->unit = report[i + 9]; | |
304 | features->unitExpo = report[i + 11]; | |
305 | i += 12; | |
306 | } | |
545f4e99 | 307 | } else if (pen) { |
ec67bbed PC |
308 | /* penabled only accepts exact bytes of data */ |
309 | if (features->type == TABLETPC2FG) | |
57e413d9 | 310 | features->pktlen = WACOM_PKGLEN_GRAPHIRE; |
ec67bbed | 311 | features->device_type = BTN_TOOL_PEN; |
545f4e99 | 312 | features->x_max = |
252f7769 | 313 | get_unaligned_le16(&report[i + 3]); |
545f4e99 PC |
314 | i += 4; |
315 | } | |
545f4e99 PC |
316 | } |
317 | break; | |
318 | ||
319 | case HID_USAGE_Y: | |
ec67bbed PC |
320 | if (usage == WCM_DESKTOP) { |
321 | if (finger) { | |
84eb5aa6 | 322 | features->device_type = BTN_TOOL_FINGER; |
ec67bbed PC |
323 | if (features->type == TABLETPC2FG) { |
324 | /* need to reset back */ | |
325 | features->pktlen = WACOM_PKGLEN_TPC2FG; | |
ec67bbed | 326 | features->y_max = |
252f7769 | 327 | get_unaligned_le16(&report[i + 3]); |
ec67bbed | 328 | features->y_phy = |
252f7769 | 329 | get_unaligned_le16(&report[i + 6]); |
ec67bbed | 330 | i += 7; |
4a88081e PC |
331 | } else if (features->type == BAMBOO_PT) { |
332 | /* need to reset back */ | |
333 | features->pktlen = WACOM_PKGLEN_BBTOUCH; | |
4a88081e PC |
334 | features->y_phy = |
335 | get_unaligned_le16(&report[i + 3]); | |
336 | features->y_max = | |
337 | get_unaligned_le16(&report[i + 6]); | |
338 | i += 12; | |
ec67bbed PC |
339 | } else { |
340 | features->y_max = | |
341 | features->x_max; | |
342 | features->y_phy = | |
252f7769 | 343 | get_unaligned_le16(&report[i + 3]); |
ec67bbed PC |
344 | i += 4; |
345 | } | |
346 | } else if (pen) { | |
347 | /* penabled only accepts exact bytes of data */ | |
348 | if (features->type == TABLETPC2FG) | |
57e413d9 | 349 | features->pktlen = WACOM_PKGLEN_GRAPHIRE; |
ec67bbed PC |
350 | features->device_type = BTN_TOOL_PEN; |
351 | features->y_max = | |
252f7769 | 352 | get_unaligned_le16(&report[i + 3]); |
ec67bbed PC |
353 | i += 4; |
354 | } | |
355 | } | |
545f4e99 PC |
356 | break; |
357 | ||
358 | case HID_USAGE_FINGER: | |
359 | finger = 1; | |
360 | i++; | |
361 | break; | |
362 | ||
428f8588 CB |
363 | /* |
364 | * Requiring Stylus Usage will ignore boot mouse | |
365 | * X/Y values and some cases of invalid Digitizer X/Y | |
366 | * values commonly reported. | |
367 | */ | |
545f4e99 PC |
368 | case HID_USAGE_STYLUS: |
369 | pen = 1; | |
370 | i++; | |
371 | break; | |
545f4e99 PC |
372 | } |
373 | break; | |
374 | ||
4134361a | 375 | case HID_COLLECTION_END: |
ec67bbed | 376 | /* reset UsagePage and Finger */ |
545f4e99 PC |
377 | finger = usage = 0; |
378 | break; | |
4134361a CB |
379 | |
380 | case HID_COLLECTION: | |
381 | i++; | |
382 | switch (report[i]) { | |
383 | case HID_COLLECTION_LOGICAL: | |
384 | i += wacom_parse_logical_collection(&report[i], | |
385 | features); | |
386 | break; | |
387 | } | |
388 | break; | |
545f4e99 PC |
389 | } |
390 | } | |
391 | ||
545f4e99 | 392 | out: |
384318ec | 393 | result = 0; |
545f4e99 PC |
394 | kfree(report); |
395 | return result; | |
396 | } | |
397 | ||
ec67bbed | 398 | static int wacom_query_tablet_data(struct usb_interface *intf, struct wacom_features *features) |
3b7307c2 DT |
399 | { |
400 | unsigned char *rep_data; | |
ec67bbed PC |
401 | int limit = 0, report_id = 2; |
402 | int error = -ENOMEM; | |
3b7307c2 | 403 | |
3b48c91c | 404 | rep_data = kmalloc(4, GFP_KERNEL); |
3b7307c2 | 405 | if (!rep_data) |
ec67bbed PC |
406 | return error; |
407 | ||
3b48c91c | 408 | /* ask to report tablet data if it is MT Tablet PC or |
3dc9f40d CB |
409 | * not a Tablet PC */ |
410 | if (features->type == TABLETPC2FG) { | |
ec67bbed PC |
411 | do { |
412 | rep_data[0] = 3; | |
413 | rep_data[1] = 4; | |
3b48c91c PC |
414 | rep_data[2] = 0; |
415 | rep_data[3] = 0; | |
ec67bbed | 416 | report_id = 3; |
5d7e7d47 EH |
417 | error = wacom_set_report(intf, WAC_HID_FEATURE_REPORT, |
418 | report_id, rep_data, 4, 1); | |
ec67bbed | 419 | if (error >= 0) |
5d7e7d47 EH |
420 | error = wacom_get_report(intf, |
421 | WAC_HID_FEATURE_REPORT, | |
422 | report_id, rep_data, 4, 1); | |
a417ea44 | 423 | } while ((error < 0 || rep_data[1] != 4) && limit++ < WAC_MSG_RETRIES); |
6e8ec537 CB |
424 | } else if (features->type != TABLETPC && |
425 | features->device_type == BTN_TOOL_PEN) { | |
ec67bbed PC |
426 | do { |
427 | rep_data[0] = 2; | |
428 | rep_data[1] = 2; | |
5d7e7d47 EH |
429 | error = wacom_set_report(intf, WAC_HID_FEATURE_REPORT, |
430 | report_id, rep_data, 2, 1); | |
ec67bbed | 431 | if (error >= 0) |
5d7e7d47 EH |
432 | error = wacom_get_report(intf, |
433 | WAC_HID_FEATURE_REPORT, | |
434 | report_id, rep_data, 2, 1); | |
a417ea44 | 435 | } while ((error < 0 || rep_data[1] != 2) && limit++ < WAC_MSG_RETRIES); |
ec67bbed | 436 | } |
3b7307c2 DT |
437 | |
438 | kfree(rep_data); | |
439 | ||
440 | return error < 0 ? error : 0; | |
441 | } | |
442 | ||
ec67bbed PC |
443 | static int wacom_retrieve_hid_descriptor(struct usb_interface *intf, |
444 | struct wacom_features *features) | |
445 | { | |
446 | int error = 0; | |
447 | struct usb_host_interface *interface = intf->cur_altsetting; | |
448 | struct hid_descriptor *hid_desc; | |
449 | ||
fed87e65 | 450 | /* default features */ |
ec67bbed | 451 | features->device_type = BTN_TOOL_PEN; |
fed87e65 HR |
452 | features->x_fuzz = 4; |
453 | features->y_fuzz = 4; | |
454 | features->pressure_fuzz = 0; | |
455 | features->distance_fuzz = 0; | |
ec67bbed | 456 | |
3dc9f40d | 457 | /* only Tablet PCs and Bamboo P&T need to retrieve the info */ |
4a88081e PC |
458 | if ((features->type != TABLETPC) && (features->type != TABLETPC2FG) && |
459 | (features->type != BAMBOO_PT)) | |
ec67bbed PC |
460 | goto out; |
461 | ||
462 | if (usb_get_extra_descriptor(interface, HID_DEVICET_HID, &hid_desc)) { | |
463 | if (usb_get_extra_descriptor(&interface->endpoint[0], | |
464 | HID_DEVICET_REPORT, &hid_desc)) { | |
465 | printk("wacom: can not retrieve extra class descriptor\n"); | |
466 | error = 1; | |
467 | goto out; | |
468 | } | |
469 | } | |
470 | error = wacom_parse_hid(intf, hid_desc, features); | |
471 | if (error) | |
472 | goto out; | |
473 | ||
ec67bbed PC |
474 | out: |
475 | return error; | |
476 | } | |
477 | ||
4492efff PC |
478 | struct wacom_usbdev_data { |
479 | struct list_head list; | |
480 | struct kref kref; | |
481 | struct usb_device *dev; | |
482 | struct wacom_shared shared; | |
483 | }; | |
484 | ||
485 | static LIST_HEAD(wacom_udev_list); | |
486 | static DEFINE_MUTEX(wacom_udev_list_lock); | |
487 | ||
488 | static struct wacom_usbdev_data *wacom_get_usbdev_data(struct usb_device *dev) | |
489 | { | |
490 | struct wacom_usbdev_data *data; | |
491 | ||
492 | list_for_each_entry(data, &wacom_udev_list, list) { | |
493 | if (data->dev == dev) { | |
494 | kref_get(&data->kref); | |
495 | return data; | |
496 | } | |
497 | } | |
498 | ||
499 | return NULL; | |
500 | } | |
501 | ||
502 | static int wacom_add_shared_data(struct wacom_wac *wacom, | |
503 | struct usb_device *dev) | |
504 | { | |
505 | struct wacom_usbdev_data *data; | |
506 | int retval = 0; | |
507 | ||
508 | mutex_lock(&wacom_udev_list_lock); | |
509 | ||
510 | data = wacom_get_usbdev_data(dev); | |
511 | if (!data) { | |
512 | data = kzalloc(sizeof(struct wacom_usbdev_data), GFP_KERNEL); | |
513 | if (!data) { | |
514 | retval = -ENOMEM; | |
515 | goto out; | |
516 | } | |
517 | ||
518 | kref_init(&data->kref); | |
519 | data->dev = dev; | |
520 | list_add_tail(&data->list, &wacom_udev_list); | |
521 | } | |
522 | ||
523 | wacom->shared = &data->shared; | |
524 | ||
525 | out: | |
526 | mutex_unlock(&wacom_udev_list_lock); | |
527 | return retval; | |
528 | } | |
529 | ||
530 | static void wacom_release_shared_data(struct kref *kref) | |
531 | { | |
532 | struct wacom_usbdev_data *data = | |
533 | container_of(kref, struct wacom_usbdev_data, kref); | |
534 | ||
535 | mutex_lock(&wacom_udev_list_lock); | |
536 | list_del(&data->list); | |
537 | mutex_unlock(&wacom_udev_list_lock); | |
538 | ||
539 | kfree(data); | |
540 | } | |
541 | ||
542 | static void wacom_remove_shared_data(struct wacom_wac *wacom) | |
543 | { | |
544 | struct wacom_usbdev_data *data; | |
545 | ||
546 | if (wacom->shared) { | |
547 | data = container_of(wacom->shared, struct wacom_usbdev_data, shared); | |
548 | kref_put(&data->kref, wacom_release_shared_data); | |
549 | wacom->shared = NULL; | |
550 | } | |
551 | } | |
552 | ||
5d7e7d47 EH |
553 | static int wacom_led_control(struct wacom *wacom) |
554 | { | |
555 | unsigned char *buf; | |
09e7d941 | 556 | int retval, led = 0; |
5d7e7d47 EH |
557 | |
558 | buf = kzalloc(9, GFP_KERNEL); | |
559 | if (!buf) | |
560 | return -ENOMEM; | |
561 | ||
246835fc JG |
562 | if (wacom->wacom_wac.features.type == WACOM_21UX2 || |
563 | wacom->wacom_wac.features.type == WACOM_24HD) | |
09e7d941 PC |
564 | led = (wacom->led.select[1] << 4) | 0x40; |
565 | ||
566 | led |= wacom->led.select[0] | 0x4; | |
567 | ||
5d7e7d47 | 568 | buf[0] = WAC_CMD_LED_CONTROL; |
09e7d941 | 569 | buf[1] = led; |
5d7e7d47 EH |
570 | buf[2] = wacom->led.llv; |
571 | buf[3] = wacom->led.hlv; | |
572 | buf[4] = wacom->led.img_lum; | |
573 | ||
574 | retval = wacom_set_report(wacom->intf, 0x03, WAC_CMD_LED_CONTROL, | |
575 | buf, 9, WAC_CMD_RETRIES); | |
576 | kfree(buf); | |
577 | ||
578 | return retval; | |
579 | } | |
580 | ||
581 | static int wacom_led_putimage(struct wacom *wacom, int button_id, const void *img) | |
582 | { | |
583 | unsigned char *buf; | |
584 | int i, retval; | |
585 | ||
586 | buf = kzalloc(259, GFP_KERNEL); | |
587 | if (!buf) | |
588 | return -ENOMEM; | |
589 | ||
590 | /* Send 'start' command */ | |
591 | buf[0] = WAC_CMD_ICON_START; | |
592 | buf[1] = 1; | |
593 | retval = wacom_set_report(wacom->intf, 0x03, WAC_CMD_ICON_START, | |
594 | buf, 2, WAC_CMD_RETRIES); | |
595 | if (retval < 0) | |
596 | goto out; | |
597 | ||
598 | buf[0] = WAC_CMD_ICON_XFER; | |
599 | buf[1] = button_id & 0x07; | |
600 | for (i = 0; i < 4; i++) { | |
601 | buf[2] = i; | |
602 | memcpy(buf + 3, img + i * 256, 256); | |
603 | ||
604 | retval = wacom_set_report(wacom->intf, 0x03, WAC_CMD_ICON_XFER, | |
605 | buf, 259, WAC_CMD_RETRIES); | |
606 | if (retval < 0) | |
607 | break; | |
608 | } | |
609 | ||
610 | /* Send 'stop' */ | |
611 | buf[0] = WAC_CMD_ICON_START; | |
612 | buf[1] = 0; | |
613 | wacom_set_report(wacom->intf, 0x03, WAC_CMD_ICON_START, | |
614 | buf, 2, WAC_CMD_RETRIES); | |
615 | ||
616 | out: | |
617 | kfree(buf); | |
618 | return retval; | |
619 | } | |
620 | ||
09e7d941 | 621 | static ssize_t wacom_led_select_store(struct device *dev, int set_id, |
5d7e7d47 EH |
622 | const char *buf, size_t count) |
623 | { | |
624 | struct wacom *wacom = dev_get_drvdata(dev); | |
625 | unsigned int id; | |
626 | int err; | |
627 | ||
628 | err = kstrtouint(buf, 10, &id); | |
629 | if (err) | |
630 | return err; | |
631 | ||
632 | mutex_lock(&wacom->lock); | |
633 | ||
09e7d941 | 634 | wacom->led.select[set_id] = id & 0x3; |
5d7e7d47 EH |
635 | err = wacom_led_control(wacom); |
636 | ||
637 | mutex_unlock(&wacom->lock); | |
638 | ||
639 | return err < 0 ? err : count; | |
640 | } | |
641 | ||
09e7d941 PC |
642 | #define DEVICE_LED_SELECT_ATTR(SET_ID) \ |
643 | static ssize_t wacom_led##SET_ID##_select_store(struct device *dev, \ | |
644 | struct device_attribute *attr, const char *buf, size_t count) \ | |
645 | { \ | |
646 | return wacom_led_select_store(dev, SET_ID, buf, count); \ | |
647 | } \ | |
04c59abd PC |
648 | static ssize_t wacom_led##SET_ID##_select_show(struct device *dev, \ |
649 | struct device_attribute *attr, char *buf) \ | |
650 | { \ | |
651 | struct wacom *wacom = dev_get_drvdata(dev); \ | |
652 | return snprintf(buf, 2, "%d\n", wacom->led.select[SET_ID]); \ | |
653 | } \ | |
654 | static DEVICE_ATTR(status_led##SET_ID##_select, S_IWUSR | S_IRUSR, \ | |
655 | wacom_led##SET_ID##_select_show, \ | |
09e7d941 PC |
656 | wacom_led##SET_ID##_select_store) |
657 | ||
658 | DEVICE_LED_SELECT_ATTR(0); | |
659 | DEVICE_LED_SELECT_ATTR(1); | |
5d7e7d47 EH |
660 | |
661 | static ssize_t wacom_luminance_store(struct wacom *wacom, u8 *dest, | |
662 | const char *buf, size_t count) | |
663 | { | |
664 | unsigned int value; | |
665 | int err; | |
666 | ||
667 | err = kstrtouint(buf, 10, &value); | |
668 | if (err) | |
669 | return err; | |
670 | ||
671 | mutex_lock(&wacom->lock); | |
672 | ||
673 | *dest = value & 0x7f; | |
674 | err = wacom_led_control(wacom); | |
675 | ||
676 | mutex_unlock(&wacom->lock); | |
677 | ||
678 | return err < 0 ? err : count; | |
679 | } | |
680 | ||
681 | #define DEVICE_LUMINANCE_ATTR(name, field) \ | |
682 | static ssize_t wacom_##name##_luminance_store(struct device *dev, \ | |
683 | struct device_attribute *attr, const char *buf, size_t count) \ | |
684 | { \ | |
685 | struct wacom *wacom = dev_get_drvdata(dev); \ | |
686 | \ | |
687 | return wacom_luminance_store(wacom, &wacom->led.field, \ | |
688 | buf, count); \ | |
689 | } \ | |
690 | static DEVICE_ATTR(name##_luminance, S_IWUSR, \ | |
691 | NULL, wacom_##name##_luminance_store) | |
692 | ||
693 | DEVICE_LUMINANCE_ATTR(status0, llv); | |
694 | DEVICE_LUMINANCE_ATTR(status1, hlv); | |
695 | DEVICE_LUMINANCE_ATTR(buttons, img_lum); | |
696 | ||
697 | static ssize_t wacom_button_image_store(struct device *dev, int button_id, | |
698 | const char *buf, size_t count) | |
699 | { | |
700 | struct wacom *wacom = dev_get_drvdata(dev); | |
701 | int err; | |
702 | ||
703 | if (count != 1024) | |
704 | return -EINVAL; | |
705 | ||
706 | mutex_lock(&wacom->lock); | |
707 | ||
708 | err = wacom_led_putimage(wacom, button_id, buf); | |
709 | ||
710 | mutex_unlock(&wacom->lock); | |
711 | ||
712 | return err < 0 ? err : count; | |
713 | } | |
714 | ||
715 | #define DEVICE_BTNIMG_ATTR(BUTTON_ID) \ | |
716 | static ssize_t wacom_btnimg##BUTTON_ID##_store(struct device *dev, \ | |
717 | struct device_attribute *attr, const char *buf, size_t count) \ | |
718 | { \ | |
719 | return wacom_button_image_store(dev, BUTTON_ID, buf, count); \ | |
720 | } \ | |
721 | static DEVICE_ATTR(button##BUTTON_ID##_rawimg, S_IWUSR, \ | |
722 | NULL, wacom_btnimg##BUTTON_ID##_store) | |
723 | ||
724 | DEVICE_BTNIMG_ATTR(0); | |
725 | DEVICE_BTNIMG_ATTR(1); | |
726 | DEVICE_BTNIMG_ATTR(2); | |
727 | DEVICE_BTNIMG_ATTR(3); | |
728 | DEVICE_BTNIMG_ATTR(4); | |
729 | DEVICE_BTNIMG_ATTR(5); | |
730 | DEVICE_BTNIMG_ATTR(6); | |
731 | DEVICE_BTNIMG_ATTR(7); | |
732 | ||
09e7d941 PC |
733 | static struct attribute *cintiq_led_attrs[] = { |
734 | &dev_attr_status_led0_select.attr, | |
735 | &dev_attr_status_led1_select.attr, | |
736 | NULL | |
737 | }; | |
738 | ||
739 | static struct attribute_group cintiq_led_attr_group = { | |
740 | .name = "wacom_led", | |
741 | .attrs = cintiq_led_attrs, | |
742 | }; | |
743 | ||
744 | static struct attribute *intuos4_led_attrs[] = { | |
5d7e7d47 EH |
745 | &dev_attr_status0_luminance.attr, |
746 | &dev_attr_status1_luminance.attr, | |
09e7d941 | 747 | &dev_attr_status_led0_select.attr, |
5d7e7d47 EH |
748 | &dev_attr_buttons_luminance.attr, |
749 | &dev_attr_button0_rawimg.attr, | |
750 | &dev_attr_button1_rawimg.attr, | |
751 | &dev_attr_button2_rawimg.attr, | |
752 | &dev_attr_button3_rawimg.attr, | |
753 | &dev_attr_button4_rawimg.attr, | |
754 | &dev_attr_button5_rawimg.attr, | |
755 | &dev_attr_button6_rawimg.attr, | |
756 | &dev_attr_button7_rawimg.attr, | |
757 | NULL | |
758 | }; | |
759 | ||
09e7d941 | 760 | static struct attribute_group intuos4_led_attr_group = { |
5d7e7d47 | 761 | .name = "wacom_led", |
09e7d941 | 762 | .attrs = intuos4_led_attrs, |
5d7e7d47 EH |
763 | }; |
764 | ||
765 | static int wacom_initialize_leds(struct wacom *wacom) | |
766 | { | |
767 | int error; | |
768 | ||
09e7d941 PC |
769 | /* Initialize default values */ |
770 | switch (wacom->wacom_wac.features.type) { | |
771 | case INTUOS4: | |
772 | case INTUOS4L: | |
773 | wacom->led.select[0] = 0; | |
774 | wacom->led.select[1] = 0; | |
f4fa9a6d | 775 | wacom->led.llv = 10; |
5d7e7d47 EH |
776 | wacom->led.hlv = 20; |
777 | wacom->led.img_lum = 10; | |
09e7d941 PC |
778 | error = sysfs_create_group(&wacom->intf->dev.kobj, |
779 | &intuos4_led_attr_group); | |
780 | break; | |
781 | ||
246835fc | 782 | case WACOM_24HD: |
09e7d941 PC |
783 | case WACOM_21UX2: |
784 | wacom->led.select[0] = 0; | |
785 | wacom->led.select[1] = 0; | |
786 | wacom->led.llv = 0; | |
787 | wacom->led.hlv = 0; | |
788 | wacom->led.img_lum = 0; | |
5d7e7d47 EH |
789 | |
790 | error = sysfs_create_group(&wacom->intf->dev.kobj, | |
09e7d941 PC |
791 | &cintiq_led_attr_group); |
792 | break; | |
793 | ||
794 | default: | |
795 | return 0; | |
5d7e7d47 EH |
796 | } |
797 | ||
09e7d941 PC |
798 | if (error) { |
799 | dev_err(&wacom->intf->dev, | |
800 | "cannot create sysfs group err: %d\n", error); | |
801 | return error; | |
802 | } | |
803 | wacom_led_control(wacom); | |
804 | ||
5d7e7d47 EH |
805 | return 0; |
806 | } | |
807 | ||
808 | static void wacom_destroy_leds(struct wacom *wacom) | |
809 | { | |
09e7d941 PC |
810 | switch (wacom->wacom_wac.features.type) { |
811 | case INTUOS4: | |
812 | case INTUOS4L: | |
5d7e7d47 | 813 | sysfs_remove_group(&wacom->intf->dev.kobj, |
09e7d941 PC |
814 | &intuos4_led_attr_group); |
815 | break; | |
816 | ||
246835fc | 817 | case WACOM_24HD: |
09e7d941 PC |
818 | case WACOM_21UX2: |
819 | sysfs_remove_group(&wacom->intf->dev.kobj, | |
820 | &cintiq_led_attr_group); | |
821 | break; | |
5d7e7d47 EH |
822 | } |
823 | } | |
824 | ||
3bea733a PC |
825 | static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *id) |
826 | { | |
827 | struct usb_device *dev = interface_to_usbdev(intf); | |
828 | struct usb_endpoint_descriptor *endpoint; | |
829 | struct wacom *wacom; | |
830 | struct wacom_wac *wacom_wac; | |
e33da8a5 | 831 | struct wacom_features *features; |
3bea733a | 832 | struct input_dev *input_dev; |
e33da8a5 | 833 | int error; |
3bea733a | 834 | |
e33da8a5 | 835 | if (!id->driver_info) |
b036f6fb BB |
836 | return -EINVAL; |
837 | ||
3bea733a | 838 | wacom = kzalloc(sizeof(struct wacom), GFP_KERNEL); |
3bea733a | 839 | input_dev = input_allocate_device(); |
51269fe8 | 840 | if (!wacom || !input_dev) { |
e33da8a5 JC |
841 | error = -ENOMEM; |
842 | goto fail1; | |
843 | } | |
844 | ||
51269fe8 | 845 | wacom_wac = &wacom->wacom_wac; |
e33da8a5 JC |
846 | wacom_wac->features = *((struct wacom_features *)id->driver_info); |
847 | features = &wacom_wac->features; | |
848 | if (features->pktlen > WACOM_PKGLEN_MAX) { | |
849 | error = -EINVAL; | |
3bea733a | 850 | goto fail1; |
e33da8a5 | 851 | } |
3bea733a | 852 | |
997ea58e DM |
853 | wacom_wac->data = usb_alloc_coherent(dev, WACOM_PKGLEN_MAX, |
854 | GFP_KERNEL, &wacom->data_dma); | |
e33da8a5 JC |
855 | if (!wacom_wac->data) { |
856 | error = -ENOMEM; | |
3bea733a | 857 | goto fail1; |
e33da8a5 | 858 | } |
3bea733a PC |
859 | |
860 | wacom->irq = usb_alloc_urb(0, GFP_KERNEL); | |
e33da8a5 JC |
861 | if (!wacom->irq) { |
862 | error = -ENOMEM; | |
3bea733a | 863 | goto fail2; |
e33da8a5 | 864 | } |
3bea733a PC |
865 | |
866 | wacom->usbdev = dev; | |
e7224094 ON |
867 | wacom->intf = intf; |
868 | mutex_init(&wacom->lock); | |
3bea733a PC |
869 | usb_make_path(dev, wacom->phys, sizeof(wacom->phys)); |
870 | strlcat(wacom->phys, "/input0", sizeof(wacom->phys)); | |
871 | ||
8da23fc1 | 872 | wacom_wac->input = input_dev; |
3bea733a | 873 | |
545f4e99 PC |
874 | endpoint = &intf->cur_altsetting->endpoint[0].desc; |
875 | ||
ec67bbed PC |
876 | /* Retrieve the physical and logical size for OEM devices */ |
877 | error = wacom_retrieve_hid_descriptor(intf, features); | |
878 | if (error) | |
4b6d4434 | 879 | goto fail3; |
545f4e99 | 880 | |
bc73dd39 HR |
881 | wacom_setup_device_quirks(features); |
882 | ||
49b764ae PC |
883 | strlcpy(wacom_wac->name, features->name, sizeof(wacom_wac->name)); |
884 | ||
bc73dd39 | 885 | if (features->quirks & WACOM_QUIRK_MULTI_INPUT) { |
49b764ae PC |
886 | /* Append the device type to the name */ |
887 | strlcat(wacom_wac->name, | |
888 | features->device_type == BTN_TOOL_PEN ? | |
889 | " Pen" : " Finger", | |
890 | sizeof(wacom_wac->name)); | |
4492efff PC |
891 | |
892 | error = wacom_add_shared_data(wacom_wac, dev); | |
893 | if (error) | |
894 | goto fail3; | |
49b764ae PC |
895 | } |
896 | ||
8da23fc1 DT |
897 | input_dev->name = wacom_wac->name; |
898 | input_dev->dev.parent = &intf->dev; | |
899 | input_dev->open = wacom_open; | |
900 | input_dev->close = wacom_close; | |
901 | usb_to_input_id(dev, &input_dev->id); | |
902 | input_set_drvdata(input_dev, wacom); | |
e33da8a5 | 903 | |
8da23fc1 | 904 | wacom_setup_input_capabilities(input_dev, wacom_wac); |
3bea733a | 905 | |
3bea733a PC |
906 | usb_fill_int_urb(wacom->irq, dev, |
907 | usb_rcvintpipe(dev, endpoint->bEndpointAddress), | |
ec67bbed | 908 | wacom_wac->data, features->pktlen, |
8d32e3ae | 909 | wacom_sys_irq, wacom, endpoint->bInterval); |
3bea733a PC |
910 | wacom->irq->transfer_dma = wacom->data_dma; |
911 | wacom->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
912 | ||
5d7e7d47 | 913 | error = wacom_initialize_leds(wacom); |
5014186d | 914 | if (error) |
4492efff | 915 | goto fail4; |
3bea733a | 916 | |
5d7e7d47 EH |
917 | error = input_register_device(input_dev); |
918 | if (error) | |
919 | goto fail5; | |
920 | ||
ec67bbed PC |
921 | /* Note that if query fails it is not a hard failure */ |
922 | wacom_query_tablet_data(intf, features); | |
3bea733a PC |
923 | |
924 | usb_set_intfdata(intf, wacom); | |
925 | return 0; | |
926 | ||
5d7e7d47 | 927 | fail5: wacom_destroy_leds(wacom); |
4492efff | 928 | fail4: wacom_remove_shared_data(wacom_wac); |
5014186d | 929 | fail3: usb_free_urb(wacom->irq); |
997ea58e | 930 | fail2: usb_free_coherent(dev, WACOM_PKGLEN_MAX, wacom_wac->data, wacom->data_dma); |
5014186d | 931 | fail1: input_free_device(input_dev); |
3bea733a | 932 | kfree(wacom); |
5014186d | 933 | return error; |
3bea733a PC |
934 | } |
935 | ||
936 | static void wacom_disconnect(struct usb_interface *intf) | |
937 | { | |
e7224094 | 938 | struct wacom *wacom = usb_get_intfdata(intf); |
3bea733a PC |
939 | |
940 | usb_set_intfdata(intf, NULL); | |
e7224094 ON |
941 | |
942 | usb_kill_urb(wacom->irq); | |
8da23fc1 | 943 | input_unregister_device(wacom->wacom_wac.input); |
5d7e7d47 | 944 | wacom_destroy_leds(wacom); |
e7224094 | 945 | usb_free_urb(wacom->irq); |
997ea58e | 946 | usb_free_coherent(interface_to_usbdev(intf), WACOM_PKGLEN_MAX, |
51269fe8 DT |
947 | wacom->wacom_wac.data, wacom->data_dma); |
948 | wacom_remove_shared_data(&wacom->wacom_wac); | |
e7224094 ON |
949 | kfree(wacom); |
950 | } | |
951 | ||
952 | static int wacom_suspend(struct usb_interface *intf, pm_message_t message) | |
953 | { | |
954 | struct wacom *wacom = usb_get_intfdata(intf); | |
955 | ||
956 | mutex_lock(&wacom->lock); | |
957 | usb_kill_urb(wacom->irq); | |
958 | mutex_unlock(&wacom->lock); | |
959 | ||
960 | return 0; | |
961 | } | |
962 | ||
963 | static int wacom_resume(struct usb_interface *intf) | |
964 | { | |
965 | struct wacom *wacom = usb_get_intfdata(intf); | |
51269fe8 | 966 | struct wacom_features *features = &wacom->wacom_wac.features; |
5d7e7d47 | 967 | int rv = 0; |
e7224094 ON |
968 | |
969 | mutex_lock(&wacom->lock); | |
38101475 PC |
970 | |
971 | /* switch to wacom mode first */ | |
972 | wacom_query_tablet_data(intf, features); | |
5d7e7d47 | 973 | wacom_led_control(wacom); |
38101475 | 974 | |
5d7e7d47 EH |
975 | if (wacom->open && usb_submit_urb(wacom->irq, GFP_NOIO) < 0) |
976 | rv = -EIO; | |
38101475 | 977 | |
e7224094 ON |
978 | mutex_unlock(&wacom->lock); |
979 | ||
980 | return rv; | |
981 | } | |
982 | ||
983 | static int wacom_reset_resume(struct usb_interface *intf) | |
984 | { | |
985 | return wacom_resume(intf); | |
3bea733a PC |
986 | } |
987 | ||
988 | static struct usb_driver wacom_driver = { | |
989 | .name = "wacom", | |
b036f6fb | 990 | .id_table = wacom_ids, |
3bea733a PC |
991 | .probe = wacom_probe, |
992 | .disconnect = wacom_disconnect, | |
e7224094 ON |
993 | .suspend = wacom_suspend, |
994 | .resume = wacom_resume, | |
995 | .reset_resume = wacom_reset_resume, | |
996 | .supports_autosuspend = 1, | |
3bea733a PC |
997 | }; |
998 | ||
08642e7c | 999 | module_usb_driver(wacom_driver); |