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 | |
31 | #define HID_COLLECTION 0xc0 | |
32 | ||
33 | enum { | |
34 | WCM_UNDEFINED = 0, | |
35 | WCM_DESKTOP, | |
36 | WCM_DIGITIZER, | |
37 | }; | |
38 | ||
39 | struct hid_descriptor { | |
40 | struct usb_descriptor_header header; | |
41 | __le16 bcdHID; | |
42 | u8 bCountryCode; | |
43 | u8 bNumDescriptors; | |
44 | u8 bDescriptorType; | |
45 | __le16 wDescriptorLength; | |
46 | } __attribute__ ((packed)); | |
47 | ||
48 | /* defines to get/set USB message */ | |
3bea733a PC |
49 | #define USB_REQ_GET_REPORT 0x01 |
50 | #define USB_REQ_SET_REPORT 0x09 | |
5d7e7d47 | 51 | |
545f4e99 | 52 | #define WAC_HID_FEATURE_REPORT 0x03 |
a417ea44 | 53 | #define WAC_MSG_RETRIES 5 |
3bea733a | 54 | |
5d7e7d47 EH |
55 | #define WAC_CMD_LED_CONTROL 0x20 |
56 | #define WAC_CMD_ICON_START 0x21 | |
57 | #define WAC_CMD_ICON_XFER 0x23 | |
58 | #define WAC_CMD_RETRIES 10 | |
59 | ||
60 | static int wacom_get_report(struct usb_interface *intf, u8 type, u8 id, | |
61 | void *buf, size_t size, unsigned int retries) | |
3bea733a | 62 | { |
5d7e7d47 EH |
63 | struct usb_device *dev = interface_to_usbdev(intf); |
64 | int retval; | |
65 | ||
66 | do { | |
67 | retval = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), | |
68 | USB_REQ_GET_REPORT, | |
6e8ec537 CB |
69 | USB_DIR_IN | USB_TYPE_CLASS | |
70 | USB_RECIP_INTERFACE, | |
5d7e7d47 EH |
71 | (type << 8) + id, |
72 | intf->altsetting[0].desc.bInterfaceNumber, | |
73 | buf, size, 100); | |
74 | } while ((retval == -ETIMEDOUT || retval == -EPIPE) && --retries); | |
75 | ||
76 | return retval; | |
3bea733a PC |
77 | } |
78 | ||
5d7e7d47 EH |
79 | static int wacom_set_report(struct usb_interface *intf, u8 type, u8 id, |
80 | void *buf, size_t size, unsigned int retries) | |
3bea733a | 81 | { |
5d7e7d47 EH |
82 | struct usb_device *dev = interface_to_usbdev(intf); |
83 | int retval; | |
84 | ||
85 | do { | |
86 | retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
87 | USB_REQ_SET_REPORT, | |
88 | USB_TYPE_CLASS | USB_RECIP_INTERFACE, | |
89 | (type << 8) + id, | |
90 | intf->altsetting[0].desc.bInterfaceNumber, | |
91 | buf, size, 1000); | |
92 | } while ((retval == -ETIMEDOUT || retval == -EPIPE) && --retries); | |
93 | ||
94 | return retval; | |
3bea733a PC |
95 | } |
96 | ||
54c9b226 | 97 | static void wacom_sys_irq(struct urb *urb) |
3bea733a PC |
98 | { |
99 | struct wacom *wacom = urb->context; | |
3bea733a PC |
100 | int retval; |
101 | ||
102 | switch (urb->status) { | |
103 | case 0: | |
104 | /* success */ | |
105 | break; | |
106 | case -ECONNRESET: | |
107 | case -ENOENT: | |
108 | case -ESHUTDOWN: | |
109 | /* this urb is terminated, clean up */ | |
ea3e6c59 | 110 | dbg("%s - urb shutting down with status: %d", __func__, urb->status); |
3bea733a PC |
111 | return; |
112 | default: | |
ea3e6c59 | 113 | dbg("%s - nonzero urb status received: %d", __func__, urb->status); |
3bea733a PC |
114 | goto exit; |
115 | } | |
116 | ||
95dd3b30 | 117 | wacom_wac_irq(&wacom->wacom_wac, urb->actual_length); |
3bea733a PC |
118 | |
119 | exit: | |
e7224094 | 120 | usb_mark_last_busy(wacom->usbdev); |
73a97f4f | 121 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
3bea733a PC |
122 | if (retval) |
123 | err ("%s - usb_submit_urb failed with result %d", | |
ea3e6c59 | 124 | __func__, retval); |
3bea733a PC |
125 | } |
126 | ||
3bea733a PC |
127 | static int wacom_open(struct input_dev *dev) |
128 | { | |
7791bdae | 129 | struct wacom *wacom = input_get_drvdata(dev); |
f6cd3783 | 130 | int retval = 0; |
3bea733a | 131 | |
f6cd3783 | 132 | if (usb_autopm_get_interface(wacom->intf) < 0) |
3bea733a | 133 | return -EIO; |
f6cd3783 DT |
134 | |
135 | mutex_lock(&wacom->lock); | |
e7224094 ON |
136 | |
137 | if (usb_submit_urb(wacom->irq, GFP_KERNEL)) { | |
f6cd3783 DT |
138 | retval = -EIO; |
139 | goto out; | |
e7224094 ON |
140 | } |
141 | ||
51269fe8 | 142 | wacom->open = true; |
e7224094 | 143 | wacom->intf->needs_remote_wakeup = 1; |
3bea733a | 144 | |
f6cd3783 | 145 | out: |
e7224094 | 146 | mutex_unlock(&wacom->lock); |
62ecae09 | 147 | usb_autopm_put_interface(wacom->intf); |
f6cd3783 | 148 | return retval; |
3bea733a PC |
149 | } |
150 | ||
151 | static void wacom_close(struct input_dev *dev) | |
152 | { | |
7791bdae | 153 | struct wacom *wacom = input_get_drvdata(dev); |
62ecae09 DT |
154 | int autopm_error; |
155 | ||
156 | autopm_error = usb_autopm_get_interface(wacom->intf); | |
3bea733a | 157 | |
e7224094 | 158 | mutex_lock(&wacom->lock); |
3bea733a | 159 | usb_kill_urb(wacom->irq); |
51269fe8 | 160 | wacom->open = false; |
e7224094 ON |
161 | wacom->intf->needs_remote_wakeup = 0; |
162 | mutex_unlock(&wacom->lock); | |
f6cd3783 | 163 | |
62ecae09 DT |
164 | if (!autopm_error) |
165 | usb_autopm_put_interface(wacom->intf); | |
3bea733a PC |
166 | } |
167 | ||
428f8588 CB |
168 | /* |
169 | * Interface Descriptor of wacom devices can be incomplete and | |
170 | * inconsistent so wacom_features table is used to store stylus | |
171 | * device's packet lengths, various maximum values, and tablet | |
172 | * resolution based on product ID's. | |
173 | * | |
174 | * For devices that contain 2 interfaces, wacom_features table is | |
175 | * inaccurate for the touch interface. Since the Interface Descriptor | |
176 | * for touch interfaces has pretty complete data, this function exists | |
177 | * to query tablet for this missing information instead of hard coding in | |
178 | * an additional table. | |
179 | * | |
180 | * A typical Interface Descriptor for a stylus will contain a | |
181 | * boot mouse application collection that is not of interest and this | |
182 | * function will ignore it. | |
183 | * | |
184 | * It also contains a digitizer application collection that also is not | |
185 | * of interest since any information it contains would be duplicate | |
186 | * of what is in wacom_features. Usually it defines a report of an array | |
187 | * of bytes that could be used as max length of the stylus packet returned. | |
188 | * If it happens to define a Digitizer-Stylus Physical Collection then | |
189 | * the X and Y logical values contain valid data but it is ignored. | |
190 | * | |
191 | * A typical Interface Descriptor for a touch interface will contain a | |
192 | * Digitizer-Finger Physical Collection which will define both logical | |
193 | * X/Y maximum as well as the physical size of tablet. Since touch | |
194 | * interfaces haven't supported pressure or distance, this is enough | |
195 | * information to override invalid values in the wacom_features table. | |
196 | */ | |
197 | static int wacom_parse_hid(struct usb_interface *intf, | |
198 | struct hid_descriptor *hid_desc, | |
ec67bbed | 199 | struct wacom_features *features) |
545f4e99 PC |
200 | { |
201 | struct usb_device *dev = interface_to_usbdev(intf); | |
ec67bbed PC |
202 | char limit = 0; |
203 | /* result has to be defined as int for some devices */ | |
204 | int result = 0; | |
545f4e99 PC |
205 | int i = 0, usage = WCM_UNDEFINED, finger = 0, pen = 0; |
206 | unsigned char *report; | |
207 | ||
208 | report = kzalloc(hid_desc->wDescriptorLength, GFP_KERNEL); | |
209 | if (!report) | |
210 | return -ENOMEM; | |
211 | ||
212 | /* retrive report descriptors */ | |
213 | do { | |
214 | result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), | |
215 | USB_REQ_GET_DESCRIPTOR, | |
216 | USB_RECIP_INTERFACE | USB_DIR_IN, | |
217 | HID_DEVICET_REPORT << 8, | |
218 | intf->altsetting[0].desc.bInterfaceNumber, /* interface */ | |
219 | report, | |
220 | hid_desc->wDescriptorLength, | |
221 | 5000); /* 5 secs */ | |
a417ea44 | 222 | } while (result < 0 && limit++ < WAC_MSG_RETRIES); |
545f4e99 | 223 | |
384318ec | 224 | /* No need to parse the Descriptor. It isn't an error though */ |
545f4e99 PC |
225 | if (result < 0) |
226 | goto out; | |
227 | ||
228 | for (i = 0; i < hid_desc->wDescriptorLength; i++) { | |
229 | ||
230 | switch (report[i]) { | |
231 | case HID_USAGE_PAGE: | |
232 | switch (report[i + 1]) { | |
233 | case HID_USAGE_PAGE_DIGITIZER: | |
234 | usage = WCM_DIGITIZER; | |
235 | i++; | |
236 | break; | |
237 | ||
238 | case HID_USAGE_PAGE_DESKTOP: | |
239 | usage = WCM_DESKTOP; | |
240 | i++; | |
241 | break; | |
242 | } | |
243 | break; | |
244 | ||
245 | case HID_USAGE: | |
246 | switch (report[i + 1]) { | |
247 | case HID_USAGE_X: | |
248 | if (usage == WCM_DESKTOP) { | |
249 | if (finger) { | |
84eb5aa6 | 250 | features->device_type = BTN_TOOL_FINGER; |
ec67bbed PC |
251 | if (features->type == TABLETPC2FG) { |
252 | /* need to reset back */ | |
253 | features->pktlen = WACOM_PKGLEN_TPC2FG; | |
84eb5aa6 | 254 | features->device_type = BTN_TOOL_DOUBLETAP; |
ec67bbed | 255 | } |
4a88081e PC |
256 | if (features->type == BAMBOO_PT) { |
257 | /* need to reset back */ | |
258 | features->pktlen = WACOM_PKGLEN_BBTOUCH; | |
84eb5aa6 | 259 | features->device_type = BTN_TOOL_DOUBLETAP; |
4a88081e PC |
260 | features->x_phy = |
261 | get_unaligned_le16(&report[i + 5]); | |
262 | features->x_max = | |
263 | get_unaligned_le16(&report[i + 8]); | |
264 | i += 15; | |
265 | } else { | |
266 | features->x_max = | |
267 | get_unaligned_le16(&report[i + 3]); | |
268 | features->x_phy = | |
269 | get_unaligned_le16(&report[i + 6]); | |
270 | features->unit = report[i + 9]; | |
271 | features->unitExpo = report[i + 11]; | |
272 | i += 12; | |
273 | } | |
545f4e99 | 274 | } else if (pen) { |
ec67bbed PC |
275 | /* penabled only accepts exact bytes of data */ |
276 | if (features->type == TABLETPC2FG) | |
57e413d9 | 277 | features->pktlen = WACOM_PKGLEN_GRAPHIRE; |
ec67bbed | 278 | features->device_type = BTN_TOOL_PEN; |
545f4e99 | 279 | features->x_max = |
252f7769 | 280 | get_unaligned_le16(&report[i + 3]); |
545f4e99 PC |
281 | i += 4; |
282 | } | |
283 | } else if (usage == WCM_DIGITIZER) { | |
284 | /* max pressure isn't reported | |
285 | features->pressure_max = (unsigned short) | |
286 | (report[i+4] << 8 | report[i + 3]); | |
287 | */ | |
288 | features->pressure_max = 255; | |
289 | i += 4; | |
290 | } | |
291 | break; | |
292 | ||
293 | case HID_USAGE_Y: | |
ec67bbed PC |
294 | if (usage == WCM_DESKTOP) { |
295 | if (finger) { | |
84eb5aa6 | 296 | features->device_type = BTN_TOOL_FINGER; |
ec67bbed PC |
297 | if (features->type == TABLETPC2FG) { |
298 | /* need to reset back */ | |
299 | features->pktlen = WACOM_PKGLEN_TPC2FG; | |
84eb5aa6 | 300 | features->device_type = BTN_TOOL_DOUBLETAP; |
ec67bbed | 301 | features->y_max = |
252f7769 | 302 | get_unaligned_le16(&report[i + 3]); |
ec67bbed | 303 | features->y_phy = |
252f7769 | 304 | get_unaligned_le16(&report[i + 6]); |
ec67bbed | 305 | i += 7; |
4a88081e PC |
306 | } else if (features->type == BAMBOO_PT) { |
307 | /* need to reset back */ | |
308 | features->pktlen = WACOM_PKGLEN_BBTOUCH; | |
84eb5aa6 | 309 | features->device_type = BTN_TOOL_DOUBLETAP; |
4a88081e PC |
310 | features->y_phy = |
311 | get_unaligned_le16(&report[i + 3]); | |
312 | features->y_max = | |
313 | get_unaligned_le16(&report[i + 6]); | |
314 | i += 12; | |
ec67bbed PC |
315 | } else { |
316 | features->y_max = | |
317 | features->x_max; | |
318 | features->y_phy = | |
252f7769 | 319 | get_unaligned_le16(&report[i + 3]); |
ec67bbed PC |
320 | i += 4; |
321 | } | |
322 | } else if (pen) { | |
323 | /* penabled only accepts exact bytes of data */ | |
324 | if (features->type == TABLETPC2FG) | |
57e413d9 | 325 | features->pktlen = WACOM_PKGLEN_GRAPHIRE; |
ec67bbed PC |
326 | features->device_type = BTN_TOOL_PEN; |
327 | features->y_max = | |
252f7769 | 328 | get_unaligned_le16(&report[i + 3]); |
ec67bbed PC |
329 | i += 4; |
330 | } | |
331 | } | |
545f4e99 PC |
332 | break; |
333 | ||
334 | case HID_USAGE_FINGER: | |
335 | finger = 1; | |
336 | i++; | |
337 | break; | |
338 | ||
428f8588 CB |
339 | /* |
340 | * Requiring Stylus Usage will ignore boot mouse | |
341 | * X/Y values and some cases of invalid Digitizer X/Y | |
342 | * values commonly reported. | |
343 | */ | |
545f4e99 PC |
344 | case HID_USAGE_STYLUS: |
345 | pen = 1; | |
346 | i++; | |
347 | break; | |
348 | ||
349 | case HID_USAGE_UNDEFINED: | |
350 | if (usage == WCM_DESKTOP && finger) /* capacity */ | |
351 | features->pressure_max = | |
252f7769 | 352 | get_unaligned_le16(&report[i + 3]); |
545f4e99 PC |
353 | i += 4; |
354 | break; | |
355 | } | |
356 | break; | |
357 | ||
358 | case HID_COLLECTION: | |
ec67bbed | 359 | /* reset UsagePage and Finger */ |
545f4e99 PC |
360 | finger = usage = 0; |
361 | break; | |
362 | } | |
363 | } | |
364 | ||
545f4e99 | 365 | out: |
384318ec | 366 | result = 0; |
545f4e99 PC |
367 | kfree(report); |
368 | return result; | |
369 | } | |
370 | ||
ec67bbed | 371 | static int wacom_query_tablet_data(struct usb_interface *intf, struct wacom_features *features) |
3b7307c2 DT |
372 | { |
373 | unsigned char *rep_data; | |
ec67bbed PC |
374 | int limit = 0, report_id = 2; |
375 | int error = -ENOMEM; | |
3b7307c2 | 376 | |
3b48c91c | 377 | rep_data = kmalloc(4, GFP_KERNEL); |
3b7307c2 | 378 | if (!rep_data) |
ec67bbed PC |
379 | return error; |
380 | ||
3b48c91c | 381 | /* ask to report tablet data if it is MT Tablet PC or |
3dc9f40d CB |
382 | * not a Tablet PC */ |
383 | if (features->type == TABLETPC2FG) { | |
ec67bbed PC |
384 | do { |
385 | rep_data[0] = 3; | |
386 | rep_data[1] = 4; | |
3b48c91c PC |
387 | rep_data[2] = 0; |
388 | rep_data[3] = 0; | |
ec67bbed | 389 | report_id = 3; |
5d7e7d47 EH |
390 | error = wacom_set_report(intf, WAC_HID_FEATURE_REPORT, |
391 | report_id, rep_data, 4, 1); | |
ec67bbed | 392 | if (error >= 0) |
5d7e7d47 EH |
393 | error = wacom_get_report(intf, |
394 | WAC_HID_FEATURE_REPORT, | |
395 | report_id, rep_data, 4, 1); | |
a417ea44 | 396 | } while ((error < 0 || rep_data[1] != 4) && limit++ < WAC_MSG_RETRIES); |
6e8ec537 CB |
397 | } else if (features->type != TABLETPC && |
398 | features->device_type == BTN_TOOL_PEN) { | |
ec67bbed PC |
399 | do { |
400 | rep_data[0] = 2; | |
401 | rep_data[1] = 2; | |
5d7e7d47 EH |
402 | error = wacom_set_report(intf, WAC_HID_FEATURE_REPORT, |
403 | report_id, rep_data, 2, 1); | |
ec67bbed | 404 | if (error >= 0) |
5d7e7d47 EH |
405 | error = wacom_get_report(intf, |
406 | WAC_HID_FEATURE_REPORT, | |
407 | report_id, rep_data, 2, 1); | |
a417ea44 | 408 | } while ((error < 0 || rep_data[1] != 2) && limit++ < WAC_MSG_RETRIES); |
ec67bbed | 409 | } |
3b7307c2 DT |
410 | |
411 | kfree(rep_data); | |
412 | ||
413 | return error < 0 ? error : 0; | |
414 | } | |
415 | ||
ec67bbed PC |
416 | static int wacom_retrieve_hid_descriptor(struct usb_interface *intf, |
417 | struct wacom_features *features) | |
418 | { | |
419 | int error = 0; | |
420 | struct usb_host_interface *interface = intf->cur_altsetting; | |
421 | struct hid_descriptor *hid_desc; | |
422 | ||
fed87e65 | 423 | /* default features */ |
ec67bbed | 424 | features->device_type = BTN_TOOL_PEN; |
fed87e65 HR |
425 | features->x_fuzz = 4; |
426 | features->y_fuzz = 4; | |
427 | features->pressure_fuzz = 0; | |
428 | features->distance_fuzz = 0; | |
ec67bbed | 429 | |
3dc9f40d | 430 | /* only Tablet PCs and Bamboo P&T need to retrieve the info */ |
4a88081e PC |
431 | if ((features->type != TABLETPC) && (features->type != TABLETPC2FG) && |
432 | (features->type != BAMBOO_PT)) | |
ec67bbed PC |
433 | goto out; |
434 | ||
435 | if (usb_get_extra_descriptor(interface, HID_DEVICET_HID, &hid_desc)) { | |
436 | if (usb_get_extra_descriptor(&interface->endpoint[0], | |
437 | HID_DEVICET_REPORT, &hid_desc)) { | |
438 | printk("wacom: can not retrieve extra class descriptor\n"); | |
439 | error = 1; | |
440 | goto out; | |
441 | } | |
442 | } | |
443 | error = wacom_parse_hid(intf, hid_desc, features); | |
444 | if (error) | |
445 | goto out; | |
446 | ||
ec67bbed PC |
447 | out: |
448 | return error; | |
449 | } | |
450 | ||
4492efff PC |
451 | struct wacom_usbdev_data { |
452 | struct list_head list; | |
453 | struct kref kref; | |
454 | struct usb_device *dev; | |
455 | struct wacom_shared shared; | |
456 | }; | |
457 | ||
458 | static LIST_HEAD(wacom_udev_list); | |
459 | static DEFINE_MUTEX(wacom_udev_list_lock); | |
460 | ||
461 | static struct wacom_usbdev_data *wacom_get_usbdev_data(struct usb_device *dev) | |
462 | { | |
463 | struct wacom_usbdev_data *data; | |
464 | ||
465 | list_for_each_entry(data, &wacom_udev_list, list) { | |
466 | if (data->dev == dev) { | |
467 | kref_get(&data->kref); | |
468 | return data; | |
469 | } | |
470 | } | |
471 | ||
472 | return NULL; | |
473 | } | |
474 | ||
475 | static int wacom_add_shared_data(struct wacom_wac *wacom, | |
476 | struct usb_device *dev) | |
477 | { | |
478 | struct wacom_usbdev_data *data; | |
479 | int retval = 0; | |
480 | ||
481 | mutex_lock(&wacom_udev_list_lock); | |
482 | ||
483 | data = wacom_get_usbdev_data(dev); | |
484 | if (!data) { | |
485 | data = kzalloc(sizeof(struct wacom_usbdev_data), GFP_KERNEL); | |
486 | if (!data) { | |
487 | retval = -ENOMEM; | |
488 | goto out; | |
489 | } | |
490 | ||
491 | kref_init(&data->kref); | |
492 | data->dev = dev; | |
493 | list_add_tail(&data->list, &wacom_udev_list); | |
494 | } | |
495 | ||
496 | wacom->shared = &data->shared; | |
497 | ||
498 | out: | |
499 | mutex_unlock(&wacom_udev_list_lock); | |
500 | return retval; | |
501 | } | |
502 | ||
503 | static void wacom_release_shared_data(struct kref *kref) | |
504 | { | |
505 | struct wacom_usbdev_data *data = | |
506 | container_of(kref, struct wacom_usbdev_data, kref); | |
507 | ||
508 | mutex_lock(&wacom_udev_list_lock); | |
509 | list_del(&data->list); | |
510 | mutex_unlock(&wacom_udev_list_lock); | |
511 | ||
512 | kfree(data); | |
513 | } | |
514 | ||
515 | static void wacom_remove_shared_data(struct wacom_wac *wacom) | |
516 | { | |
517 | struct wacom_usbdev_data *data; | |
518 | ||
519 | if (wacom->shared) { | |
520 | data = container_of(wacom->shared, struct wacom_usbdev_data, shared); | |
521 | kref_put(&data->kref, wacom_release_shared_data); | |
522 | wacom->shared = NULL; | |
523 | } | |
524 | } | |
525 | ||
5d7e7d47 EH |
526 | static int wacom_led_control(struct wacom *wacom) |
527 | { | |
528 | unsigned char *buf; | |
09e7d941 | 529 | int retval, led = 0; |
5d7e7d47 EH |
530 | |
531 | buf = kzalloc(9, GFP_KERNEL); | |
532 | if (!buf) | |
533 | return -ENOMEM; | |
534 | ||
09e7d941 PC |
535 | if (wacom->wacom_wac.features.type == WACOM_21UX2) |
536 | led = (wacom->led.select[1] << 4) | 0x40; | |
537 | ||
538 | led |= wacom->led.select[0] | 0x4; | |
539 | ||
5d7e7d47 | 540 | buf[0] = WAC_CMD_LED_CONTROL; |
09e7d941 | 541 | buf[1] = led; |
5d7e7d47 EH |
542 | buf[2] = wacom->led.llv; |
543 | buf[3] = wacom->led.hlv; | |
544 | buf[4] = wacom->led.img_lum; | |
545 | ||
546 | retval = wacom_set_report(wacom->intf, 0x03, WAC_CMD_LED_CONTROL, | |
547 | buf, 9, WAC_CMD_RETRIES); | |
548 | kfree(buf); | |
549 | ||
550 | return retval; | |
551 | } | |
552 | ||
553 | static int wacom_led_putimage(struct wacom *wacom, int button_id, const void *img) | |
554 | { | |
555 | unsigned char *buf; | |
556 | int i, retval; | |
557 | ||
558 | buf = kzalloc(259, GFP_KERNEL); | |
559 | if (!buf) | |
560 | return -ENOMEM; | |
561 | ||
562 | /* Send 'start' command */ | |
563 | buf[0] = WAC_CMD_ICON_START; | |
564 | buf[1] = 1; | |
565 | retval = wacom_set_report(wacom->intf, 0x03, WAC_CMD_ICON_START, | |
566 | buf, 2, WAC_CMD_RETRIES); | |
567 | if (retval < 0) | |
568 | goto out; | |
569 | ||
570 | buf[0] = WAC_CMD_ICON_XFER; | |
571 | buf[1] = button_id & 0x07; | |
572 | for (i = 0; i < 4; i++) { | |
573 | buf[2] = i; | |
574 | memcpy(buf + 3, img + i * 256, 256); | |
575 | ||
576 | retval = wacom_set_report(wacom->intf, 0x03, WAC_CMD_ICON_XFER, | |
577 | buf, 259, WAC_CMD_RETRIES); | |
578 | if (retval < 0) | |
579 | break; | |
580 | } | |
581 | ||
582 | /* Send 'stop' */ | |
583 | buf[0] = WAC_CMD_ICON_START; | |
584 | buf[1] = 0; | |
585 | wacom_set_report(wacom->intf, 0x03, WAC_CMD_ICON_START, | |
586 | buf, 2, WAC_CMD_RETRIES); | |
587 | ||
588 | out: | |
589 | kfree(buf); | |
590 | return retval; | |
591 | } | |
592 | ||
09e7d941 | 593 | static ssize_t wacom_led_select_store(struct device *dev, int set_id, |
5d7e7d47 EH |
594 | const char *buf, size_t count) |
595 | { | |
596 | struct wacom *wacom = dev_get_drvdata(dev); | |
597 | unsigned int id; | |
598 | int err; | |
599 | ||
600 | err = kstrtouint(buf, 10, &id); | |
601 | if (err) | |
602 | return err; | |
603 | ||
604 | mutex_lock(&wacom->lock); | |
605 | ||
09e7d941 | 606 | wacom->led.select[set_id] = id & 0x3; |
5d7e7d47 EH |
607 | err = wacom_led_control(wacom); |
608 | ||
609 | mutex_unlock(&wacom->lock); | |
610 | ||
611 | return err < 0 ? err : count; | |
612 | } | |
613 | ||
09e7d941 PC |
614 | #define DEVICE_LED_SELECT_ATTR(SET_ID) \ |
615 | static ssize_t wacom_led##SET_ID##_select_store(struct device *dev, \ | |
616 | struct device_attribute *attr, const char *buf, size_t count) \ | |
617 | { \ | |
618 | return wacom_led_select_store(dev, SET_ID, buf, count); \ | |
619 | } \ | |
04c59abd PC |
620 | static ssize_t wacom_led##SET_ID##_select_show(struct device *dev, \ |
621 | struct device_attribute *attr, char *buf) \ | |
622 | { \ | |
623 | struct wacom *wacom = dev_get_drvdata(dev); \ | |
624 | return snprintf(buf, 2, "%d\n", wacom->led.select[SET_ID]); \ | |
625 | } \ | |
626 | static DEVICE_ATTR(status_led##SET_ID##_select, S_IWUSR | S_IRUSR, \ | |
627 | wacom_led##SET_ID##_select_show, \ | |
09e7d941 PC |
628 | wacom_led##SET_ID##_select_store) |
629 | ||
630 | DEVICE_LED_SELECT_ATTR(0); | |
631 | DEVICE_LED_SELECT_ATTR(1); | |
5d7e7d47 EH |
632 | |
633 | static ssize_t wacom_luminance_store(struct wacom *wacom, u8 *dest, | |
634 | const char *buf, size_t count) | |
635 | { | |
636 | unsigned int value; | |
637 | int err; | |
638 | ||
639 | err = kstrtouint(buf, 10, &value); | |
640 | if (err) | |
641 | return err; | |
642 | ||
643 | mutex_lock(&wacom->lock); | |
644 | ||
645 | *dest = value & 0x7f; | |
646 | err = wacom_led_control(wacom); | |
647 | ||
648 | mutex_unlock(&wacom->lock); | |
649 | ||
650 | return err < 0 ? err : count; | |
651 | } | |
652 | ||
653 | #define DEVICE_LUMINANCE_ATTR(name, field) \ | |
654 | static ssize_t wacom_##name##_luminance_store(struct device *dev, \ | |
655 | struct device_attribute *attr, const char *buf, size_t count) \ | |
656 | { \ | |
657 | struct wacom *wacom = dev_get_drvdata(dev); \ | |
658 | \ | |
659 | return wacom_luminance_store(wacom, &wacom->led.field, \ | |
660 | buf, count); \ | |
661 | } \ | |
662 | static DEVICE_ATTR(name##_luminance, S_IWUSR, \ | |
663 | NULL, wacom_##name##_luminance_store) | |
664 | ||
665 | DEVICE_LUMINANCE_ATTR(status0, llv); | |
666 | DEVICE_LUMINANCE_ATTR(status1, hlv); | |
667 | DEVICE_LUMINANCE_ATTR(buttons, img_lum); | |
668 | ||
669 | static ssize_t wacom_button_image_store(struct device *dev, int button_id, | |
670 | const char *buf, size_t count) | |
671 | { | |
672 | struct wacom *wacom = dev_get_drvdata(dev); | |
673 | int err; | |
674 | ||
675 | if (count != 1024) | |
676 | return -EINVAL; | |
677 | ||
678 | mutex_lock(&wacom->lock); | |
679 | ||
680 | err = wacom_led_putimage(wacom, button_id, buf); | |
681 | ||
682 | mutex_unlock(&wacom->lock); | |
683 | ||
684 | return err < 0 ? err : count; | |
685 | } | |
686 | ||
687 | #define DEVICE_BTNIMG_ATTR(BUTTON_ID) \ | |
688 | static ssize_t wacom_btnimg##BUTTON_ID##_store(struct device *dev, \ | |
689 | struct device_attribute *attr, const char *buf, size_t count) \ | |
690 | { \ | |
691 | return wacom_button_image_store(dev, BUTTON_ID, buf, count); \ | |
692 | } \ | |
693 | static DEVICE_ATTR(button##BUTTON_ID##_rawimg, S_IWUSR, \ | |
694 | NULL, wacom_btnimg##BUTTON_ID##_store) | |
695 | ||
696 | DEVICE_BTNIMG_ATTR(0); | |
697 | DEVICE_BTNIMG_ATTR(1); | |
698 | DEVICE_BTNIMG_ATTR(2); | |
699 | DEVICE_BTNIMG_ATTR(3); | |
700 | DEVICE_BTNIMG_ATTR(4); | |
701 | DEVICE_BTNIMG_ATTR(5); | |
702 | DEVICE_BTNIMG_ATTR(6); | |
703 | DEVICE_BTNIMG_ATTR(7); | |
704 | ||
09e7d941 PC |
705 | static struct attribute *cintiq_led_attrs[] = { |
706 | &dev_attr_status_led0_select.attr, | |
707 | &dev_attr_status_led1_select.attr, | |
708 | NULL | |
709 | }; | |
710 | ||
711 | static struct attribute_group cintiq_led_attr_group = { | |
712 | .name = "wacom_led", | |
713 | .attrs = cintiq_led_attrs, | |
714 | }; | |
715 | ||
716 | static struct attribute *intuos4_led_attrs[] = { | |
5d7e7d47 EH |
717 | &dev_attr_status0_luminance.attr, |
718 | &dev_attr_status1_luminance.attr, | |
09e7d941 | 719 | &dev_attr_status_led0_select.attr, |
5d7e7d47 EH |
720 | &dev_attr_buttons_luminance.attr, |
721 | &dev_attr_button0_rawimg.attr, | |
722 | &dev_attr_button1_rawimg.attr, | |
723 | &dev_attr_button2_rawimg.attr, | |
724 | &dev_attr_button3_rawimg.attr, | |
725 | &dev_attr_button4_rawimg.attr, | |
726 | &dev_attr_button5_rawimg.attr, | |
727 | &dev_attr_button6_rawimg.attr, | |
728 | &dev_attr_button7_rawimg.attr, | |
729 | NULL | |
730 | }; | |
731 | ||
09e7d941 | 732 | static struct attribute_group intuos4_led_attr_group = { |
5d7e7d47 | 733 | .name = "wacom_led", |
09e7d941 | 734 | .attrs = intuos4_led_attrs, |
5d7e7d47 EH |
735 | }; |
736 | ||
737 | static int wacom_initialize_leds(struct wacom *wacom) | |
738 | { | |
739 | int error; | |
740 | ||
09e7d941 PC |
741 | /* Initialize default values */ |
742 | switch (wacom->wacom_wac.features.type) { | |
743 | case INTUOS4: | |
744 | case INTUOS4L: | |
745 | wacom->led.select[0] = 0; | |
746 | wacom->led.select[1] = 0; | |
f4fa9a6d | 747 | wacom->led.llv = 10; |
5d7e7d47 EH |
748 | wacom->led.hlv = 20; |
749 | wacom->led.img_lum = 10; | |
09e7d941 PC |
750 | error = sysfs_create_group(&wacom->intf->dev.kobj, |
751 | &intuos4_led_attr_group); | |
752 | break; | |
753 | ||
754 | case WACOM_21UX2: | |
755 | wacom->led.select[0] = 0; | |
756 | wacom->led.select[1] = 0; | |
757 | wacom->led.llv = 0; | |
758 | wacom->led.hlv = 0; | |
759 | wacom->led.img_lum = 0; | |
5d7e7d47 EH |
760 | |
761 | error = sysfs_create_group(&wacom->intf->dev.kobj, | |
09e7d941 PC |
762 | &cintiq_led_attr_group); |
763 | break; | |
764 | ||
765 | default: | |
766 | return 0; | |
5d7e7d47 EH |
767 | } |
768 | ||
09e7d941 PC |
769 | if (error) { |
770 | dev_err(&wacom->intf->dev, | |
771 | "cannot create sysfs group err: %d\n", error); | |
772 | return error; | |
773 | } | |
774 | wacom_led_control(wacom); | |
775 | ||
5d7e7d47 EH |
776 | return 0; |
777 | } | |
778 | ||
779 | static void wacom_destroy_leds(struct wacom *wacom) | |
780 | { | |
09e7d941 PC |
781 | switch (wacom->wacom_wac.features.type) { |
782 | case INTUOS4: | |
783 | case INTUOS4L: | |
5d7e7d47 | 784 | sysfs_remove_group(&wacom->intf->dev.kobj, |
09e7d941 PC |
785 | &intuos4_led_attr_group); |
786 | break; | |
787 | ||
788 | case WACOM_21UX2: | |
789 | sysfs_remove_group(&wacom->intf->dev.kobj, | |
790 | &cintiq_led_attr_group); | |
791 | break; | |
5d7e7d47 EH |
792 | } |
793 | } | |
794 | ||
3bea733a PC |
795 | static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *id) |
796 | { | |
797 | struct usb_device *dev = interface_to_usbdev(intf); | |
798 | struct usb_endpoint_descriptor *endpoint; | |
799 | struct wacom *wacom; | |
800 | struct wacom_wac *wacom_wac; | |
e33da8a5 | 801 | struct wacom_features *features; |
3bea733a | 802 | struct input_dev *input_dev; |
e33da8a5 | 803 | int error; |
3bea733a | 804 | |
e33da8a5 | 805 | if (!id->driver_info) |
b036f6fb BB |
806 | return -EINVAL; |
807 | ||
3bea733a | 808 | wacom = kzalloc(sizeof(struct wacom), GFP_KERNEL); |
3bea733a | 809 | input_dev = input_allocate_device(); |
51269fe8 | 810 | if (!wacom || !input_dev) { |
e33da8a5 JC |
811 | error = -ENOMEM; |
812 | goto fail1; | |
813 | } | |
814 | ||
51269fe8 | 815 | wacom_wac = &wacom->wacom_wac; |
e33da8a5 JC |
816 | wacom_wac->features = *((struct wacom_features *)id->driver_info); |
817 | features = &wacom_wac->features; | |
818 | if (features->pktlen > WACOM_PKGLEN_MAX) { | |
819 | error = -EINVAL; | |
3bea733a | 820 | goto fail1; |
e33da8a5 | 821 | } |
3bea733a | 822 | |
997ea58e DM |
823 | wacom_wac->data = usb_alloc_coherent(dev, WACOM_PKGLEN_MAX, |
824 | GFP_KERNEL, &wacom->data_dma); | |
e33da8a5 JC |
825 | if (!wacom_wac->data) { |
826 | error = -ENOMEM; | |
3bea733a | 827 | goto fail1; |
e33da8a5 | 828 | } |
3bea733a PC |
829 | |
830 | wacom->irq = usb_alloc_urb(0, GFP_KERNEL); | |
e33da8a5 JC |
831 | if (!wacom->irq) { |
832 | error = -ENOMEM; | |
3bea733a | 833 | goto fail2; |
e33da8a5 | 834 | } |
3bea733a PC |
835 | |
836 | wacom->usbdev = dev; | |
e7224094 ON |
837 | wacom->intf = intf; |
838 | mutex_init(&wacom->lock); | |
3bea733a PC |
839 | usb_make_path(dev, wacom->phys, sizeof(wacom->phys)); |
840 | strlcat(wacom->phys, "/input0", sizeof(wacom->phys)); | |
841 | ||
8da23fc1 | 842 | wacom_wac->input = input_dev; |
3bea733a | 843 | |
545f4e99 PC |
844 | endpoint = &intf->cur_altsetting->endpoint[0].desc; |
845 | ||
ec67bbed PC |
846 | /* Retrieve the physical and logical size for OEM devices */ |
847 | error = wacom_retrieve_hid_descriptor(intf, features); | |
848 | if (error) | |
4b6d4434 | 849 | goto fail3; |
545f4e99 | 850 | |
bc73dd39 HR |
851 | wacom_setup_device_quirks(features); |
852 | ||
49b764ae PC |
853 | strlcpy(wacom_wac->name, features->name, sizeof(wacom_wac->name)); |
854 | ||
bc73dd39 | 855 | if (features->quirks & WACOM_QUIRK_MULTI_INPUT) { |
49b764ae PC |
856 | /* Append the device type to the name */ |
857 | strlcat(wacom_wac->name, | |
858 | features->device_type == BTN_TOOL_PEN ? | |
859 | " Pen" : " Finger", | |
860 | sizeof(wacom_wac->name)); | |
4492efff PC |
861 | |
862 | error = wacom_add_shared_data(wacom_wac, dev); | |
863 | if (error) | |
864 | goto fail3; | |
49b764ae PC |
865 | } |
866 | ||
8da23fc1 DT |
867 | input_dev->name = wacom_wac->name; |
868 | input_dev->dev.parent = &intf->dev; | |
869 | input_dev->open = wacom_open; | |
870 | input_dev->close = wacom_close; | |
871 | usb_to_input_id(dev, &input_dev->id); | |
872 | input_set_drvdata(input_dev, wacom); | |
e33da8a5 | 873 | |
8da23fc1 | 874 | wacom_setup_input_capabilities(input_dev, wacom_wac); |
3bea733a | 875 | |
3bea733a PC |
876 | usb_fill_int_urb(wacom->irq, dev, |
877 | usb_rcvintpipe(dev, endpoint->bEndpointAddress), | |
ec67bbed | 878 | wacom_wac->data, features->pktlen, |
8d32e3ae | 879 | wacom_sys_irq, wacom, endpoint->bInterval); |
3bea733a PC |
880 | wacom->irq->transfer_dma = wacom->data_dma; |
881 | wacom->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
882 | ||
5d7e7d47 | 883 | error = wacom_initialize_leds(wacom); |
5014186d | 884 | if (error) |
4492efff | 885 | goto fail4; |
3bea733a | 886 | |
5d7e7d47 EH |
887 | error = input_register_device(input_dev); |
888 | if (error) | |
889 | goto fail5; | |
890 | ||
ec67bbed PC |
891 | /* Note that if query fails it is not a hard failure */ |
892 | wacom_query_tablet_data(intf, features); | |
3bea733a PC |
893 | |
894 | usb_set_intfdata(intf, wacom); | |
895 | return 0; | |
896 | ||
5d7e7d47 | 897 | fail5: wacom_destroy_leds(wacom); |
4492efff | 898 | fail4: wacom_remove_shared_data(wacom_wac); |
5014186d | 899 | fail3: usb_free_urb(wacom->irq); |
997ea58e | 900 | fail2: usb_free_coherent(dev, WACOM_PKGLEN_MAX, wacom_wac->data, wacom->data_dma); |
5014186d | 901 | fail1: input_free_device(input_dev); |
3bea733a | 902 | kfree(wacom); |
5014186d | 903 | return error; |
3bea733a PC |
904 | } |
905 | ||
906 | static void wacom_disconnect(struct usb_interface *intf) | |
907 | { | |
e7224094 | 908 | struct wacom *wacom = usb_get_intfdata(intf); |
3bea733a PC |
909 | |
910 | usb_set_intfdata(intf, NULL); | |
e7224094 ON |
911 | |
912 | usb_kill_urb(wacom->irq); | |
8da23fc1 | 913 | input_unregister_device(wacom->wacom_wac.input); |
5d7e7d47 | 914 | wacom_destroy_leds(wacom); |
e7224094 | 915 | usb_free_urb(wacom->irq); |
997ea58e | 916 | usb_free_coherent(interface_to_usbdev(intf), WACOM_PKGLEN_MAX, |
51269fe8 DT |
917 | wacom->wacom_wac.data, wacom->data_dma); |
918 | wacom_remove_shared_data(&wacom->wacom_wac); | |
e7224094 ON |
919 | kfree(wacom); |
920 | } | |
921 | ||
922 | static int wacom_suspend(struct usb_interface *intf, pm_message_t message) | |
923 | { | |
924 | struct wacom *wacom = usb_get_intfdata(intf); | |
925 | ||
926 | mutex_lock(&wacom->lock); | |
927 | usb_kill_urb(wacom->irq); | |
928 | mutex_unlock(&wacom->lock); | |
929 | ||
930 | return 0; | |
931 | } | |
932 | ||
933 | static int wacom_resume(struct usb_interface *intf) | |
934 | { | |
935 | struct wacom *wacom = usb_get_intfdata(intf); | |
51269fe8 | 936 | struct wacom_features *features = &wacom->wacom_wac.features; |
5d7e7d47 | 937 | int rv = 0; |
e7224094 ON |
938 | |
939 | mutex_lock(&wacom->lock); | |
38101475 PC |
940 | |
941 | /* switch to wacom mode first */ | |
942 | wacom_query_tablet_data(intf, features); | |
5d7e7d47 | 943 | wacom_led_control(wacom); |
38101475 | 944 | |
5d7e7d47 EH |
945 | if (wacom->open && usb_submit_urb(wacom->irq, GFP_NOIO) < 0) |
946 | rv = -EIO; | |
38101475 | 947 | |
e7224094 ON |
948 | mutex_unlock(&wacom->lock); |
949 | ||
950 | return rv; | |
951 | } | |
952 | ||
953 | static int wacom_reset_resume(struct usb_interface *intf) | |
954 | { | |
955 | return wacom_resume(intf); | |
3bea733a PC |
956 | } |
957 | ||
958 | static struct usb_driver wacom_driver = { | |
959 | .name = "wacom", | |
b036f6fb | 960 | .id_table = wacom_ids, |
3bea733a PC |
961 | .probe = wacom_probe, |
962 | .disconnect = wacom_disconnect, | |
e7224094 ON |
963 | .suspend = wacom_suspend, |
964 | .resume = wacom_resume, | |
965 | .reset_resume = wacom_reset_resume, | |
966 | .supports_autosuspend = 1, | |
3bea733a PC |
967 | }; |
968 | ||
969 | static int __init wacom_init(void) | |
970 | { | |
971 | int result; | |
b036f6fb | 972 | |
3bea733a PC |
973 | result = usb_register(&wacom_driver); |
974 | if (result == 0) | |
899ef6e7 GKH |
975 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
976 | DRIVER_DESC "\n"); | |
3bea733a PC |
977 | return result; |
978 | } | |
979 | ||
980 | static void __exit wacom_exit(void) | |
981 | { | |
982 | usb_deregister(&wacom_driver); | |
983 | } | |
984 | ||
985 | module_init(wacom_init); | |
986 | module_exit(wacom_exit); |