1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * HID driver for Logitech receivers
4 *
5 * Copyright (c) 2011 Logitech
6 */
7
8
9
10 #include <linux/device.h>
11 #include <linux/hid.h>
12 #include <linux/module.h>
13 #include <linux/kfifo.h>
14 #include <linux/delay.h>
15 #include <linux/usb.h> /* For to_usb_interface for kvm extra intf check */
16 #include <linux/unaligned.h>
17 #include "hid-ids.h"
18
19 #define DJ_MAX_PAIRED_DEVICES 7
20 #define DJ_MAX_NUMBER_NOTIFS 8
21 #define DJ_RECEIVER_INDEX 0
22 #define DJ_DEVICE_INDEX_MIN 1
23 #define DJ_DEVICE_INDEX_MAX 7
24
25 #define DJREPORT_SHORT_LENGTH 15
26 #define DJREPORT_LONG_LENGTH 32
27
28 #define REPORT_ID_DJ_SHORT 0x20
29 #define REPORT_ID_DJ_LONG 0x21
30
31 #define REPORT_ID_HIDPP_SHORT 0x10
32 #define REPORT_ID_HIDPP_LONG 0x11
33 #define REPORT_ID_HIDPP_VERY_LONG 0x12
34
35 #define HIDPP_REPORT_SHORT_LENGTH 7
36 #define HIDPP_REPORT_LONG_LENGTH 20
37
38 #define HIDPP_RECEIVER_INDEX 0xff
39
40 #define REPORT_TYPE_RFREPORT_FIRST 0x01
41 #define REPORT_TYPE_RFREPORT_LAST 0x1F
42
43 /* Command Switch to DJ mode */
44 #define REPORT_TYPE_CMD_SWITCH 0x80
45 #define CMD_SWITCH_PARAM_DEVBITFIELD 0x00
46 #define CMD_SWITCH_PARAM_TIMEOUT_SECONDS 0x01
47 #define TIMEOUT_NO_KEEPALIVE 0x00
48
49 /* Command to Get the list of Paired devices */
50 #define REPORT_TYPE_CMD_GET_PAIRED_DEVICES 0x81
51
52 /* Device Paired Notification */
53 #define REPORT_TYPE_NOTIF_DEVICE_PAIRED 0x41
54 #define SPFUNCTION_MORE_NOTIF_EXPECTED 0x01
55 #define SPFUNCTION_DEVICE_LIST_EMPTY 0x02
56 #define DEVICE_PAIRED_PARAM_SPFUNCTION 0x00
57 #define DEVICE_PAIRED_PARAM_EQUAD_ID_LSB 0x01
58 #define DEVICE_PAIRED_PARAM_EQUAD_ID_MSB 0x02
59 #define DEVICE_PAIRED_RF_REPORT_TYPE 0x03
60
61 /* Device Un-Paired Notification */
62 #define REPORT_TYPE_NOTIF_DEVICE_UNPAIRED 0x40
63
64 /* Connection Status Notification */
65 #define REPORT_TYPE_NOTIF_CONNECTION_STATUS 0x42
66 #define CONNECTION_STATUS_PARAM_STATUS 0x00
67 #define STATUS_LINKLOSS 0x01
68
69 /* Error Notification */
70 #define REPORT_TYPE_NOTIF_ERROR 0x7F
71 #define NOTIF_ERROR_PARAM_ETYPE 0x00
72 #define ETYPE_KEEPALIVE_TIMEOUT 0x01
73
74 /* supported DJ HID && RF report types */
75 #define REPORT_TYPE_KEYBOARD 0x01
76 #define REPORT_TYPE_MOUSE 0x02
77 #define REPORT_TYPE_CONSUMER_CONTROL 0x03
78 #define REPORT_TYPE_SYSTEM_CONTROL 0x04
79 #define REPORT_TYPE_MEDIA_CENTER 0x08
80 #define REPORT_TYPE_LEDS 0x0E
81
82 /* RF Report types bitfield */
83 #define STD_KEYBOARD BIT(1)
84 #define STD_MOUSE BIT(2)
85 #define MULTIMEDIA BIT(3)
86 #define POWER_KEYS BIT(4)
87 #define KBD_MOUSE BIT(5)
88 #define MEDIA_CENTER BIT(8)
89 #define KBD_LEDS BIT(14)
90 /* Fake (bitnr > NUMBER_OF_HID_REPORTS) bit to track HID++ capability */
91 #define HIDPP BIT_ULL(63)
92
93 /* HID++ Device Connected Notification */
94 #define REPORT_TYPE_NOTIF_DEVICE_CONNECTED 0x41
95 #define HIDPP_PARAM_PROTO_TYPE 0x00
96 #define HIDPP_PARAM_DEVICE_INFO 0x01
97 #define HIDPP_PARAM_EQUAD_LSB 0x02
98 #define HIDPP_PARAM_EQUAD_MSB 0x03
99 #define HIDPP_PARAM_27MHZ_DEVID 0x03
100 #define HIDPP_DEVICE_TYPE_MASK GENMASK(3, 0)
101 #define HIDPP_LINK_STATUS_MASK BIT(6)
102 #define HIDPP_MANUFACTURER_MASK BIT(7)
103 #define HIDPP_27MHZ_SECURE_MASK BIT(7)
104
105 #define HIDPP_DEVICE_TYPE_KEYBOARD 1
106 #define HIDPP_DEVICE_TYPE_MOUSE 2
107
108 #define HIDPP_SET_REGISTER 0x80
109 #define HIDPP_GET_LONG_REGISTER 0x83
110 #define HIDPP_REG_CONNECTION_STATE 0x02
111 #define HIDPP_REG_PAIRING_INFORMATION 0xB5
112 #define HIDPP_PAIRING_INFORMATION 0x20
113 #define HIDPP_FAKE_DEVICE_ARRIVAL 0x02
114
115 enum recvr_type {
116 recvr_type_dj,
117 recvr_type_hidpp,
118 recvr_type_gaming_hidpp,
119 recvr_type_gaming_hidpp_ls_1_3,
120 recvr_type_mouse_only,
121 recvr_type_27mhz,
122 recvr_type_bluetooth,
123 recvr_type_dinovo,
124 recvr_type_bolt,
125 };
126
127 struct dj_report {
128 u8 report_id;
129 u8 device_index;
130 u8 report_type;
131 u8 report_params[DJREPORT_SHORT_LENGTH - 3];
132 };
133
134 struct hidpp_event {
135 u8 report_id;
136 u8 device_index;
137 u8 sub_id;
138 u8 params[HIDPP_REPORT_LONG_LENGTH - 3U];
139 } __packed;
140
141 struct dj_receiver_dev {
142 struct hid_device *mouse;
143 struct hid_device *keyboard;
144 struct hid_device *hidpp;
145 struct dj_device *paired_dj_devices[DJ_MAX_PAIRED_DEVICES +
146 DJ_DEVICE_INDEX_MIN];
147 struct list_head list;
148 struct kref kref;
149 struct work_struct work;
150 struct kfifo notif_fifo;
151 unsigned long last_query; /* in jiffies */
152 bool ready;
153 bool dj_mode;
154 enum recvr_type type;
155 unsigned int unnumbered_application;
156 spinlock_t lock;
157 };
158
159 struct dj_device {
160 struct hid_device *hdev;
161 struct dj_receiver_dev *dj_receiver_dev;
162 u64 reports_supported;
163 u8 device_index;
164 };
165
166 #define WORKITEM_TYPE_EMPTY 0
167 #define WORKITEM_TYPE_PAIRED 1
168 #define WORKITEM_TYPE_UNPAIRED 2
169 #define WORKITEM_TYPE_UNKNOWN 255
170
171 struct dj_workitem {
172 u8 type; /* WORKITEM_TYPE_* */
173 u8 device_index;
174 u8 device_type;
175 u8 quad_id_msb;
176 u8 quad_id_lsb;
177 u64 reports_supported;
178 };
179
180 /* Keyboard descriptor (1) */
181 static const char kbd_descriptor[] = {
182 0x05, 0x01, /* USAGE_PAGE (generic Desktop) */
183 0x09, 0x06, /* USAGE (Keyboard) */
184 0xA1, 0x01, /* COLLECTION (Application) */
185 0x85, 0x01, /* REPORT_ID (1) */
186 0x95, 0x08, /* REPORT_COUNT (8) */
187 0x75, 0x01, /* REPORT_SIZE (1) */
188 0x15, 0x00, /* LOGICAL_MINIMUM (0) */
189 0x25, 0x01, /* LOGICAL_MAXIMUM (1) */
190 0x05, 0x07, /* USAGE_PAGE (Keyboard) */
191 0x19, 0xE0, /* USAGE_MINIMUM (Left Control) */
192 0x29, 0xE7, /* USAGE_MAXIMUM (Right GUI) */
193 0x81, 0x02, /* INPUT (Data,Var,Abs) */
194 0x95, 0x06, /* REPORT_COUNT (6) */
195 0x75, 0x08, /* REPORT_SIZE (8) */
196 0x15, 0x00, /* LOGICAL_MINIMUM (0) */
197 0x26, 0xFF, 0x00, /* LOGICAL_MAXIMUM (255) */
198 0x05, 0x07, /* USAGE_PAGE (Keyboard) */
199 0x19, 0x00, /* USAGE_MINIMUM (no event) */
200 0x2A, 0xFF, 0x00, /* USAGE_MAXIMUM (reserved) */
201 0x81, 0x00, /* INPUT (Data,Ary,Abs) */
202 0x85, 0x0e, /* REPORT_ID (14) */
203 0x05, 0x08, /* USAGE PAGE (LED page) */
204 0x95, 0x05, /* REPORT COUNT (5) */
205 0x75, 0x01, /* REPORT SIZE (1) */
206 0x15, 0x00, /* LOGICAL_MINIMUM (0) */
207 0x25, 0x01, /* LOGICAL_MAXIMUM (1) */
208 0x19, 0x01, /* USAGE MINIMUM (1) */
209 0x29, 0x05, /* USAGE MAXIMUM (5) */
210 0x91, 0x02, /* OUTPUT (Data, Variable, Absolute) */
211 0x95, 0x01, /* REPORT COUNT (1) */
212 0x75, 0x03, /* REPORT SIZE (3) */
213 0x91, 0x01, /* OUTPUT (Constant) */
214 0xC0
215 };
216
217 /* Gaming Keyboard descriptor (1) */
218 static const char kbd_lightspeed_1_3_descriptor[] = {
219 0x05, 0x01, /* Usage Page (Generic Desktop) */
220 0x09, 0x06, /* Usage (Keyboard) */
221 0xA1, 0x01, /* Collection (Application) */
222 0x85, 0x01, /* Report ID (1) */
223 0x05, 0x07, /* Usage Page (Kbrd/Keypad) */
224 0x19, 0xE0, /* Usage Minimum (0xE0) */
225 0x29, 0xE7, /* Usage Maximum (0xE7) */
226 0x15, 0x00, /* Logical Minimum (0) */
227 0x25, 0x01, /* Logical Maximum (1) */
228 0x75, 0x01, /* Report Size (1) */
229 0x95, 0x08, /* Report Count (8) */
230 0x81, 0x02, /* Input (Data,Var) */
231 0x95, 0x70, /* Report Count (112) */
232 0x19, 0x04, /* Usage Minimum (0x04) */
233 0x29, 0x73, /* Usage Maximum (0x73) */
234 0x81, 0x02, /* Input (Data,Var,Abs) */
235 0x95, 0x05, /* Report Count (5) */
236 0x19, 0x87, /* Usage Minimum (0x87) */
237 0x29, 0x8B, /* Usage Maximum (0x8B) */
238 0x81, 0x02, /* Input (Data,Var,Abs) */
239 0x95, 0x03, /* Report Count (3) */
240 0x19, 0x90, /* Usage Minimum (0x90) */
241 0x29, 0x92, /* Usage Maximum (0x92) */
242 0x81, 0x02, /* Input (Data,Var,Abs) */
243 0x95, 0x05, /* Report Count (5) */
244 0x85, 0x0E, /* Report ID (14) */
245 0x05, 0x08, /* Usage Page (LEDs) */
246 0x19, 0x01, /* Usage Minimum (Num Lock) */
247 0x29, 0x05, /* Usage Maximum (Kana) */
248 0x91, 0x02, /* Output (Data,Var,Abs) */
249 0x95, 0x01, /* Report Count (1) */
250 0x75, 0x03, /* Report Size (3) */
251 0x91, 0x03, /* Output (Const,Var,Abs) */
252 0xC0, /* End Collection */
253 };
254
255 /* Mouse descriptor (2) */
256 static const char mse_descriptor[] = {
257 0x05, 0x01, /* USAGE_PAGE (Generic Desktop) */
258 0x09, 0x02, /* USAGE (Mouse) */
259 0xA1, 0x01, /* COLLECTION (Application) */
260 0x85, 0x02, /* REPORT_ID = 2 */
261 0x09, 0x01, /* USAGE (pointer) */
262 0xA1, 0x00, /* COLLECTION (physical) */
263 0x05, 0x09, /* USAGE_PAGE (buttons) */
264 0x19, 0x01, /* USAGE_MIN (1) */
265 0x29, 0x10, /* USAGE_MAX (16) */
266 0x15, 0x00, /* LOGICAL_MIN (0) */
267 0x25, 0x01, /* LOGICAL_MAX (1) */
268 0x95, 0x10, /* REPORT_COUNT (16) */
269 0x75, 0x01, /* REPORT_SIZE (1) */
270 0x81, 0x02, /* INPUT (data var abs) */
271 0x05, 0x01, /* USAGE_PAGE (generic desktop) */
272 0x16, 0x01, 0xF8, /* LOGICAL_MIN (-2047) */
273 0x26, 0xFF, 0x07, /* LOGICAL_MAX (2047) */
274 0x75, 0x0C, /* REPORT_SIZE (12) */
275 0x95, 0x02, /* REPORT_COUNT (2) */
276 0x09, 0x30, /* USAGE (X) */
277 0x09, 0x31, /* USAGE (Y) */
278 0x81, 0x06, /* INPUT */
279 0x15, 0x81, /* LOGICAL_MIN (-127) */
280 0x25, 0x7F, /* LOGICAL_MAX (127) */
281 0x75, 0x08, /* REPORT_SIZE (8) */
282 0x95, 0x01, /* REPORT_COUNT (1) */
283 0x09, 0x38, /* USAGE (wheel) */
284 0x81, 0x06, /* INPUT */
285 0x05, 0x0C, /* USAGE_PAGE(consumer) */
286 0x0A, 0x38, 0x02, /* USAGE(AC Pan) */
287 0x95, 0x01, /* REPORT_COUNT (1) */
288 0x81, 0x06, /* INPUT */
289 0xC0, /* END_COLLECTION */
290 0xC0, /* END_COLLECTION */
291 };
292
293 /* Mouse descriptor (2) for 27 MHz receiver, only 8 buttons */
294 static const char mse_27mhz_descriptor[] = {
295 0x05, 0x01, /* USAGE_PAGE (Generic Desktop) */
296 0x09, 0x02, /* USAGE (Mouse) */
297 0xA1, 0x01, /* COLLECTION (Application) */
298 0x85, 0x02, /* REPORT_ID = 2 */
299 0x09, 0x01, /* USAGE (pointer) */
300 0xA1, 0x00, /* COLLECTION (physical) */
301 0x05, 0x09, /* USAGE_PAGE (buttons) */
302 0x19, 0x01, /* USAGE_MIN (1) */
303 0x29, 0x08, /* USAGE_MAX (8) */
304 0x15, 0x00, /* LOGICAL_MIN (0) */
305 0x25, 0x01, /* LOGICAL_MAX (1) */
306 0x95, 0x08, /* REPORT_COUNT (8) */
307 0x75, 0x01, /* REPORT_SIZE (1) */
308 0x81, 0x02, /* INPUT (data var abs) */
309 0x05, 0x01, /* USAGE_PAGE (generic desktop) */
310 0x16, 0x01, 0xF8, /* LOGICAL_MIN (-2047) */
311 0x26, 0xFF, 0x07, /* LOGICAL_MAX (2047) */
312 0x75, 0x0C, /* REPORT_SIZE (12) */
313 0x95, 0x02, /* REPORT_COUNT (2) */
314 0x09, 0x30, /* USAGE (X) */
315 0x09, 0x31, /* USAGE (Y) */
316 0x81, 0x06, /* INPUT */
317 0x15, 0x81, /* LOGICAL_MIN (-127) */
318 0x25, 0x7F, /* LOGICAL_MAX (127) */
319 0x75, 0x08, /* REPORT_SIZE (8) */
320 0x95, 0x01, /* REPORT_COUNT (1) */
321 0x09, 0x38, /* USAGE (wheel) */
322 0x81, 0x06, /* INPUT */
323 0x05, 0x0C, /* USAGE_PAGE(consumer) */
324 0x0A, 0x38, 0x02, /* USAGE(AC Pan) */
325 0x95, 0x01, /* REPORT_COUNT (1) */
326 0x81, 0x06, /* INPUT */
327 0xC0, /* END_COLLECTION */
328 0xC0, /* END_COLLECTION */
329 };
330
331 /* Mouse descriptor (2) for Bluetooth receiver, low-res hwheel, 12 buttons */
332 static const char mse_bluetooth_descriptor[] = {
333 0x05, 0x01, /* USAGE_PAGE (Generic Desktop) */
334 0x09, 0x02, /* USAGE (Mouse) */
335 0xA1, 0x01, /* COLLECTION (Application) */
336 0x85, 0x02, /* REPORT_ID = 2 */
337 0x09, 0x01, /* USAGE (pointer) */
338 0xA1, 0x00, /* COLLECTION (physical) */
339 0x05, 0x09, /* USAGE_PAGE (buttons) */
340 0x19, 0x01, /* USAGE_MIN (1) */
341 0x29, 0x08, /* USAGE_MAX (8) */
342 0x15, 0x00, /* LOGICAL_MIN (0) */
343 0x25, 0x01, /* LOGICAL_MAX (1) */
344 0x95, 0x08, /* REPORT_COUNT (8) */
345 0x75, 0x01, /* REPORT_SIZE (1) */
346 0x81, 0x02, /* INPUT (data var abs) */
347 0x05, 0x01, /* USAGE_PAGE (generic desktop) */
348 0x16, 0x01, 0xF8, /* LOGICAL_MIN (-2047) */
349 0x26, 0xFF, 0x07, /* LOGICAL_MAX (2047) */
350 0x75, 0x0C, /* REPORT_SIZE (12) */
351 0x95, 0x02, /* REPORT_COUNT (2) */
352 0x09, 0x30, /* USAGE (X) */
353 0x09, 0x31, /* USAGE (Y) */
354 0x81, 0x06, /* INPUT */
355 0x15, 0x81, /* LOGICAL_MIN (-127) */
356 0x25, 0x7F, /* LOGICAL_MAX (127) */
357 0x75, 0x08, /* REPORT_SIZE (8) */
358 0x95, 0x01, /* REPORT_COUNT (1) */
359 0x09, 0x38, /* USAGE (wheel) */
360 0x81, 0x06, /* INPUT */
361 0x05, 0x0C, /* USAGE_PAGE(consumer) */
362 0x0A, 0x38, 0x02, /* USAGE(AC Pan) */
363 0x15, 0xF9, /* LOGICAL_MIN (-7) */
364 0x25, 0x07, /* LOGICAL_MAX (7) */
365 0x75, 0x04, /* REPORT_SIZE (4) */
366 0x95, 0x01, /* REPORT_COUNT (1) */
367 0x81, 0x06, /* INPUT */
368 0x05, 0x09, /* USAGE_PAGE (buttons) */
369 0x19, 0x09, /* USAGE_MIN (9) */
370 0x29, 0x0C, /* USAGE_MAX (12) */
371 0x15, 0x00, /* LOGICAL_MIN (0) */
372 0x25, 0x01, /* LOGICAL_MAX (1) */
373 0x75, 0x01, /* REPORT_SIZE (1) */
374 0x95, 0x04, /* REPORT_COUNT (4) */
375 0x81, 0x02, /* INPUT (Data,Var,Abs) */
376 0xC0, /* END_COLLECTION */
377 0xC0, /* END_COLLECTION */
378 };
379
380 /* Mouse descriptor (5) for Bluetooth receiver, normal-res hwheel, 8 buttons */
381 static const char mse5_bluetooth_descriptor[] = {
382 0x05, 0x01, /* USAGE_PAGE (Generic Desktop) */
383 0x09, 0x02, /* Usage (Mouse) */
384 0xa1, 0x01, /* Collection (Application) */
385 0x85, 0x05, /* Report ID (5) */
386 0x09, 0x01, /* Usage (Pointer) */
387 0xa1, 0x00, /* Collection (Physical) */
388 0x05, 0x09, /* Usage Page (Button) */
389 0x19, 0x01, /* Usage Minimum (1) */
390 0x29, 0x08, /* Usage Maximum (8) */
391 0x15, 0x00, /* Logical Minimum (0) */
392 0x25, 0x01, /* Logical Maximum (1) */
393 0x95, 0x08, /* Report Count (8) */
394 0x75, 0x01, /* Report Size (1) */
395 0x81, 0x02, /* Input (Data,Var,Abs) */
396 0x05, 0x01, /* Usage Page (Generic Desktop) */
397 0x16, 0x01, 0xf8, /* Logical Minimum (-2047) */
398 0x26, 0xff, 0x07, /* Logical Maximum (2047) */
399 0x75, 0x0c, /* Report Size (12) */
400 0x95, 0x02, /* Report Count (2) */
401 0x09, 0x30, /* Usage (X) */
402 0x09, 0x31, /* Usage (Y) */
403 0x81, 0x06, /* Input (Data,Var,Rel) */
404 0x15, 0x81, /* Logical Minimum (-127) */
405 0x25, 0x7f, /* Logical Maximum (127) */
406 0x75, 0x08, /* Report Size (8) */
407 0x95, 0x01, /* Report Count (1) */
408 0x09, 0x38, /* Usage (Wheel) */
409 0x81, 0x06, /* Input (Data,Var,Rel) */
410 0x05, 0x0c, /* Usage Page (Consumer Devices) */
411 0x0a, 0x38, 0x02, /* Usage (AC Pan) */
412 0x15, 0x81, /* Logical Minimum (-127) */
413 0x25, 0x7f, /* Logical Maximum (127) */
414 0x75, 0x08, /* Report Size (8) */
415 0x95, 0x01, /* Report Count (1) */
416 0x81, 0x06, /* Input (Data,Var,Rel) */
417 0xc0, /* End Collection */
418 0xc0, /* End Collection */
419 };
420
421 /* Gaming Mouse descriptor (2) */
422 static const char mse_high_res_descriptor[] = {
423 0x05, 0x01, /* USAGE_PAGE (Generic Desktop) */
424 0x09, 0x02, /* USAGE (Mouse) */
425 0xA1, 0x01, /* COLLECTION (Application) */
426 0x85, 0x02, /* REPORT_ID = 2 */
427 0x09, 0x01, /* USAGE (pointer) */
428 0xA1, 0x00, /* COLLECTION (physical) */
429 0x05, 0x09, /* USAGE_PAGE (buttons) */
430 0x19, 0x01, /* USAGE_MIN (1) */
431 0x29, 0x10, /* USAGE_MAX (16) */
432 0x15, 0x00, /* LOGICAL_MIN (0) */
433 0x25, 0x01, /* LOGICAL_MAX (1) */
434 0x95, 0x10, /* REPORT_COUNT (16) */
435 0x75, 0x01, /* REPORT_SIZE (1) */
436 0x81, 0x02, /* INPUT (data var abs) */
437 0x05, 0x01, /* USAGE_PAGE (generic desktop) */
438 0x16, 0x01, 0x80, /* LOGICAL_MIN (-32767) */
439 0x26, 0xFF, 0x7F, /* LOGICAL_MAX (32767) */
440 0x75, 0x10, /* REPORT_SIZE (16) */
441 0x95, 0x02, /* REPORT_COUNT (2) */
442 0x09, 0x30, /* USAGE (X) */
443 0x09, 0x31, /* USAGE (Y) */
444 0x81, 0x06, /* INPUT */
445 0x15, 0x81, /* LOGICAL_MIN (-127) */
446 0x25, 0x7F, /* LOGICAL_MAX (127) */
447 0x75, 0x08, /* REPORT_SIZE (8) */
448 0x95, 0x01, /* REPORT_COUNT (1) */
449 0x09, 0x38, /* USAGE (wheel) */
450 0x81, 0x06, /* INPUT */
451 0x05, 0x0C, /* USAGE_PAGE(consumer) */
452 0x0A, 0x38, 0x02, /* USAGE(AC Pan) */
453 0x95, 0x01, /* REPORT_COUNT (1) */
454 0x81, 0x06, /* INPUT */
455 0xC0, /* END_COLLECTION */
456 0xC0, /* END_COLLECTION */
457 };
458
459 /* Gaming Mouse descriptor with vendor data (2) */
460 static const char mse_high_res_ls_1_3_descriptor[] = {
461 0x05, 0x01, /* Usage Page (Generic Desktop) */
462 0x09, 0x02, /* Usage (Mouse) */
463 0xA1, 0x01, /* Collection (Application) */
464 0x85, 0x02, /* Report ID (2) */
465 0x09, 0x01, /* Usage (Pointer) */
466 0xA1, 0x00, /* Collection (Physical) */
467 0x95, 0x10, /* Report Count (16) */
468 0x75, 0x01, /* Report Size (1) */
469 0x15, 0x00, /* Logical Minimum (0) */
470 0x25, 0x01, /* Logical Maximum (1) */
471 0x05, 0x09, /* Usage Page (Button) */
472 0x19, 0x01, /* Usage Minimum (0x01) */
473 0x29, 0x10, /* Usage Maximum (0x10) */
474 0x81, 0x02, /* Input (Data,Var,Abs) */
475 0x95, 0x02, /* Report Count (2) */
476 0x75, 0x10, /* Report Size (16) */
477 0x16, 0x01, 0x80, /* Logical Minimum (-32767) */
478 0x26, 0xFF, 0x7F, /* Logical Maximum (32767) */
479 0x05, 0x01, /* Usage Page (Generic Desktop) */
480 0x09, 0x30, /* Usage (X) */
481 0x09, 0x31, /* Usage (Y) */
482 0x81, 0x06, /* Input (Data,Var,Rel) */
483 0x95, 0x01, /* Report Count (1) */
484 0x75, 0x08, /* Report Size (8) */
485 0x15, 0x81, /* Logical Minimum (-127) */
486 0x25, 0x7F, /* Logical Maximum (127) */
487 0x09, 0x38, /* Usage (Wheel) */
488 0x81, 0x06, /* Input (Data,Var,Rel) */
489 0x95, 0x01, /* Report Count (1) */
490 0x05, 0x0C, /* Usage Page (Consumer) */
491 0x0A, 0x38, 0x02, /* Usage (AC Pan) */
492 0x81, 0x06, /* Input (Data,Var,Rel) */
493 0xC0, /* End Collection */
494 0x06, 0x00, 0xFF, /* Usage Page (Vendor Defined 0xFF00) */
495 0x09, 0xF1, /* Usage (0xF1) */
496 0x75, 0x08, /* Report Size (8) */
497 0x95, 0x05, /* Report Count (5) */
498 0x15, 0x00, /* Logical Minimum (0) */
499 0x26, 0xFF, 0x00, /* Logical Maximum (255) */
500 0x81, 0x00, /* Input (Data,Array,Abs) */
501 0xC0, /* End Collection */
502 };
503
504 /* Consumer Control descriptor (3) */
505 static const char consumer_descriptor[] = {
506 0x05, 0x0C, /* USAGE_PAGE (Consumer Devices) */
507 0x09, 0x01, /* USAGE (Consumer Control) */
508 0xA1, 0x01, /* COLLECTION (Application) */
509 0x85, 0x03, /* REPORT_ID = 3 */
510 0x75, 0x10, /* REPORT_SIZE (16) */
511 0x95, 0x02, /* REPORT_COUNT (2) */
512 0x15, 0x01, /* LOGICAL_MIN (1) */
513 0x26, 0xFF, 0x02, /* LOGICAL_MAX (767) */
514 0x19, 0x01, /* USAGE_MIN (1) */
515 0x2A, 0xFF, 0x02, /* USAGE_MAX (767) */
516 0x81, 0x00, /* INPUT (Data Ary Abs) */
517 0xC0, /* END_COLLECTION */
518 }; /* */
519
520 /* System control descriptor (4) */
521 static const char syscontrol_descriptor[] = {
522 0x05, 0x01, /* USAGE_PAGE (Generic Desktop) */
523 0x09, 0x80, /* USAGE (System Control) */
524 0xA1, 0x01, /* COLLECTION (Application) */
525 0x85, 0x04, /* REPORT_ID = 4 */
526 0x75, 0x02, /* REPORT_SIZE (2) */
527 0x95, 0x01, /* REPORT_COUNT (1) */
528 0x15, 0x01, /* LOGICAL_MIN (1) */
529 0x25, 0x03, /* LOGICAL_MAX (3) */
530 0x09, 0x82, /* USAGE (System Sleep) */
531 0x09, 0x81, /* USAGE (System Power Down) */
532 0x09, 0x83, /* USAGE (System Wake Up) */
533 0x81, 0x60, /* INPUT (Data Ary Abs NPrf Null) */
534 0x75, 0x06, /* REPORT_SIZE (6) */
535 0x81, 0x03, /* INPUT (Cnst Var Abs) */
536 0xC0, /* END_COLLECTION */
537 };
538
539 /* Media descriptor (8) */
540 static const char media_descriptor[] = {
541 0x06, 0xbc, 0xff, /* Usage Page 0xffbc */
542 0x09, 0x88, /* Usage 0x0088 */
543 0xa1, 0x01, /* BeginCollection */
544 0x85, 0x08, /* Report ID 8 */
545 0x19, 0x01, /* Usage Min 0x0001 */
546 0x29, 0xff, /* Usage Max 0x00ff */
547 0x15, 0x01, /* Logical Min 1 */
548 0x26, 0xff, 0x00, /* Logical Max 255 */
549 0x75, 0x08, /* Report Size 8 */
550 0x95, 0x01, /* Report Count 1 */
551 0x81, 0x00, /* Input */
552 0xc0, /* EndCollection */
553 }; /* */
554
555 /* HIDPP descriptor */
556 static const char hidpp_descriptor[] = {
557 0x06, 0x00, 0xff, /* Usage Page (Vendor Defined Page 1) */
558 0x09, 0x01, /* Usage (Vendor Usage 1) */
559 0xa1, 0x01, /* Collection (Application) */
560 0x85, 0x10, /* Report ID (16) */
561 0x75, 0x08, /* Report Size (8) */
562 0x95, 0x06, /* Report Count (6) */
563 0x15, 0x00, /* Logical Minimum (0) */
564 0x26, 0xff, 0x00, /* Logical Maximum (255) */
565 0x09, 0x01, /* Usage (Vendor Usage 1) */
566 0x81, 0x00, /* Input (Data,Arr,Abs) */
567 0x09, 0x01, /* Usage (Vendor Usage 1) */
568 0x91, 0x00, /* Output (Data,Arr,Abs) */
569 0xc0, /* End Collection */
570 0x06, 0x00, 0xff, /* Usage Page (Vendor Defined Page 1) */
571 0x09, 0x02, /* Usage (Vendor Usage 2) */
572 0xa1, 0x01, /* Collection (Application) */
573 0x85, 0x11, /* Report ID (17) */
574 0x75, 0x08, /* Report Size (8) */
575 0x95, 0x13, /* Report Count (19) */
576 0x15, 0x00, /* Logical Minimum (0) */
577 0x26, 0xff, 0x00, /* Logical Maximum (255) */
578 0x09, 0x02, /* Usage (Vendor Usage 2) */
579 0x81, 0x00, /* Input (Data,Arr,Abs) */
580 0x09, 0x02, /* Usage (Vendor Usage 2) */
581 0x91, 0x00, /* Output (Data,Arr,Abs) */
582 0xc0, /* End Collection */
583 0x06, 0x00, 0xff, /* Usage Page (Vendor Defined Page 1) */
584 0x09, 0x04, /* Usage (Vendor Usage 0x04) */
585 0xa1, 0x01, /* Collection (Application) */
586 0x85, 0x20, /* Report ID (32) */
587 0x75, 0x08, /* Report Size (8) */
588 0x95, 0x0e, /* Report Count (14) */
589 0x15, 0x00, /* Logical Minimum (0) */
590 0x26, 0xff, 0x00, /* Logical Maximum (255) */
591 0x09, 0x41, /* Usage (Vendor Usage 0x41) */
592 0x81, 0x00, /* Input (Data,Arr,Abs) */
593 0x09, 0x41, /* Usage (Vendor Usage 0x41) */
594 0x91, 0x00, /* Output (Data,Arr,Abs) */
595 0x85, 0x21, /* Report ID (33) */
596 0x95, 0x1f, /* Report Count (31) */
597 0x15, 0x00, /* Logical Minimum (0) */
598 0x26, 0xff, 0x00, /* Logical Maximum (255) */
599 0x09, 0x42, /* Usage (Vendor Usage 0x42) */
600 0x81, 0x00, /* Input (Data,Arr,Abs) */
601 0x09, 0x42, /* Usage (Vendor Usage 0x42) */
602 0x91, 0x00, /* Output (Data,Arr,Abs) */
603 0xc0, /* End Collection */
604 };
605
606 /* Maximum size of all defined hid reports in bytes (including report id) */
607 #define MAX_REPORT_SIZE 8
608
609 /* Make sure the largest of each descriptor type is present here */
610 #define MAX_RDESC_SIZE \
611 (sizeof(kbd_lightspeed_1_3_descriptor) +\
612 sizeof(mse_bluetooth_descriptor) + \
613 sizeof(mse5_bluetooth_descriptor) + \
614 sizeof(consumer_descriptor) + \
615 sizeof(syscontrol_descriptor) + \
616 sizeof(media_descriptor) + \
617 sizeof(hidpp_descriptor))
618
619 /* Number of possible hid report types that can be created by this driver.
620 *
621 * Right now, RF report types have the same report types (or report id's)
622 * than the hid report created from those RF reports. In the future
623 * this doesnt have to be true.
624 *
625 * For instance, RF report type 0x01 which has a size of 8 bytes, corresponds
626 * to hid report id 0x01, this is standard keyboard. Same thing applies to mice
627 * reports and consumer control, etc. If a new RF report is created, it doesn't
628 * has to have the same report id as its corresponding hid report, so an
629 * translation may have to take place for future report types.
630 */
631 #define NUMBER_OF_HID_REPORTS 32
632 static const u8 hid_reportid_size_map[NUMBER_OF_HID_REPORTS] = {
633 [1] = 8, /* Standard keyboard */
634 [2] = 8, /* Standard mouse */
635 [3] = 5, /* Consumer control */
636 [4] = 2, /* System control */
637 [8] = 2, /* Media Center */
638 };
639
640
641 #define LOGITECH_DJ_INTERFACE_NUMBER 0x02
642
643 static const struct hid_ll_driver logi_dj_ll_driver;
644
645 static int logi_dj_recv_query_paired_devices(struct dj_receiver_dev *djrcv_dev);
646 static int logi_dj_recv_switch_to_dj_mode(struct dj_receiver_dev *djrcv_dev,
647 unsigned int timeout);
648 static void delayedwork_callback(struct work_struct *work);
649
650 static LIST_HEAD(dj_hdev_list);
651 static DEFINE_MUTEX(dj_hdev_list_lock);
652
recvr_type_is_bluetooth(enum recvr_type type)653 static bool recvr_type_is_bluetooth(enum recvr_type type)
654 {
655 return type == recvr_type_bluetooth || type == recvr_type_dinovo;
656 }
657
658 /*
659 * dj/HID++ receivers are really a single logical entity, but for BIOS/Windows
660 * compatibility they have multiple USB interfaces. On HID++ receivers we need
661 * to listen for input reports on both interfaces. The functions below are used
662 * to create a single struct dj_receiver_dev for all interfaces belonging to
663 * a single USB-device / receiver.
664 */
dj_find_receiver_dev(struct hid_device * hdev,enum recvr_type type)665 static struct dj_receiver_dev *dj_find_receiver_dev(struct hid_device *hdev,
666 enum recvr_type type)
667 {
668 struct dj_receiver_dev *djrcv_dev;
669 char sep;
670
671 /*
672 * The bluetooth receiver contains a built-in hub and has separate
673 * USB-devices for the keyboard and mouse interfaces.
674 */
675 sep = recvr_type_is_bluetooth(type) ? '.' : '/';
676
677 /* Try to find an already-probed interface from the same device */
678 list_for_each_entry(djrcv_dev, &dj_hdev_list, list) {
679 if (djrcv_dev->mouse &&
680 hid_compare_device_paths(hdev, djrcv_dev->mouse, sep)) {
681 kref_get(&djrcv_dev->kref);
682 return djrcv_dev;
683 }
684 if (djrcv_dev->keyboard &&
685 hid_compare_device_paths(hdev, djrcv_dev->keyboard, sep)) {
686 kref_get(&djrcv_dev->kref);
687 return djrcv_dev;
688 }
689 if (djrcv_dev->hidpp &&
690 hid_compare_device_paths(hdev, djrcv_dev->hidpp, sep)) {
691 kref_get(&djrcv_dev->kref);
692 return djrcv_dev;
693 }
694 }
695
696 return NULL;
697 }
698
dj_release_receiver_dev(struct kref * kref)699 static void dj_release_receiver_dev(struct kref *kref)
700 {
701 struct dj_receiver_dev *djrcv_dev = container_of(kref, struct dj_receiver_dev, kref);
702
703 list_del(&djrcv_dev->list);
704 kfifo_free(&djrcv_dev->notif_fifo);
705 kfree(djrcv_dev);
706 }
707
dj_put_receiver_dev(struct hid_device * hdev)708 static void dj_put_receiver_dev(struct hid_device *hdev)
709 {
710 struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);
711
712 mutex_lock(&dj_hdev_list_lock);
713
714 if (djrcv_dev->mouse == hdev)
715 djrcv_dev->mouse = NULL;
716 if (djrcv_dev->keyboard == hdev)
717 djrcv_dev->keyboard = NULL;
718 if (djrcv_dev->hidpp == hdev)
719 djrcv_dev->hidpp = NULL;
720
721 kref_put(&djrcv_dev->kref, dj_release_receiver_dev);
722
723 mutex_unlock(&dj_hdev_list_lock);
724 }
725
dj_get_receiver_dev(struct hid_device * hdev,enum recvr_type type,unsigned int application,bool is_hidpp)726 static struct dj_receiver_dev *dj_get_receiver_dev(struct hid_device *hdev,
727 enum recvr_type type,
728 unsigned int application,
729 bool is_hidpp)
730 {
731 struct dj_receiver_dev *djrcv_dev;
732
733 mutex_lock(&dj_hdev_list_lock);
734
735 djrcv_dev = dj_find_receiver_dev(hdev, type);
736 if (!djrcv_dev) {
737 djrcv_dev = kzalloc_obj(*djrcv_dev);
738 if (!djrcv_dev)
739 goto out;
740
741 INIT_WORK(&djrcv_dev->work, delayedwork_callback);
742 spin_lock_init(&djrcv_dev->lock);
743 if (kfifo_alloc(&djrcv_dev->notif_fifo,
744 DJ_MAX_NUMBER_NOTIFS * sizeof(struct dj_workitem),
745 GFP_KERNEL)) {
746 kfree(djrcv_dev);
747 djrcv_dev = NULL;
748 goto out;
749 }
750 kref_init(&djrcv_dev->kref);
751 list_add_tail(&djrcv_dev->list, &dj_hdev_list);
752 djrcv_dev->last_query = jiffies;
753 djrcv_dev->type = type;
754 }
755
756 if (application == HID_GD_KEYBOARD)
757 djrcv_dev->keyboard = hdev;
758 if (application == HID_GD_MOUSE)
759 djrcv_dev->mouse = hdev;
760 if (is_hidpp)
761 djrcv_dev->hidpp = hdev;
762
763 hid_set_drvdata(hdev, djrcv_dev);
764 out:
765 mutex_unlock(&dj_hdev_list_lock);
766 return djrcv_dev;
767 }
768
logi_dj_recv_destroy_djhid_device(struct dj_receiver_dev * djrcv_dev,struct dj_workitem * workitem)769 static void logi_dj_recv_destroy_djhid_device(struct dj_receiver_dev *djrcv_dev,
770 struct dj_workitem *workitem)
771 {
772 /* Called in delayed work context */
773 struct dj_device *dj_dev;
774 unsigned long flags;
775
776 spin_lock_irqsave(&djrcv_dev->lock, flags);
777 dj_dev = djrcv_dev->paired_dj_devices[workitem->device_index];
778 djrcv_dev->paired_dj_devices[workitem->device_index] = NULL;
779 spin_unlock_irqrestore(&djrcv_dev->lock, flags);
780
781 if (dj_dev != NULL) {
782 hid_destroy_device(dj_dev->hdev);
783 kfree(dj_dev);
784 } else {
785 hid_err(djrcv_dev->hidpp, "%s: can't destroy a NULL device\n",
786 __func__);
787 }
788 }
789
logi_dj_recv_add_djhid_device(struct dj_receiver_dev * djrcv_dev,struct dj_workitem * workitem)790 static void logi_dj_recv_add_djhid_device(struct dj_receiver_dev *djrcv_dev,
791 struct dj_workitem *workitem)
792 {
793 /* Called in delayed work context */
794 struct hid_device *djrcv_hdev = djrcv_dev->hidpp;
795 struct hid_device *dj_hiddev;
796 struct dj_device *dj_dev;
797 u8 device_index = workitem->device_index;
798 unsigned long flags;
799
800 /* Device index goes from 1 to 6, we need 3 bytes to store the
801 * semicolon, the index, and a null terminator
802 */
803 unsigned char tmpstr[3];
804
805 /* We are the only one ever adding a device, no need to lock */
806 if (djrcv_dev->paired_dj_devices[device_index]) {
807 /* The device is already known. No need to reallocate it. */
808 dbg_hid("%s: device is already known\n", __func__);
809 return;
810 }
811
812 dj_hiddev = hid_allocate_device();
813 if (IS_ERR(dj_hiddev)) {
814 hid_err(djrcv_hdev, "%s: hid_allocate_dev failed\n", __func__);
815 return;
816 }
817
818 dj_hiddev->ll_driver = &logi_dj_ll_driver;
819
820 dj_hiddev->dev.parent = &djrcv_hdev->dev;
821 dj_hiddev->bus = BUS_USB;
822 dj_hiddev->vendor = djrcv_hdev->vendor;
823 dj_hiddev->product = (workitem->quad_id_msb << 8) |
824 workitem->quad_id_lsb;
825 if (workitem->device_type) {
826 const char *type_str = "Device";
827
828 switch (workitem->device_type) {
829 case 0x01: type_str = "Keyboard"; break;
830 case 0x02: type_str = "Mouse"; break;
831 case 0x03: type_str = "Numpad"; break;
832 case 0x04: type_str = "Presenter"; break;
833 case 0x07: type_str = "Remote Control"; break;
834 case 0x08: type_str = "Trackball"; break;
835 case 0x09: type_str = "Touchpad"; break;
836 }
837 snprintf(dj_hiddev->name, sizeof(dj_hiddev->name),
838 "Logitech Wireless %s PID:%04x",
839 type_str, dj_hiddev->product);
840 } else {
841 snprintf(dj_hiddev->name, sizeof(dj_hiddev->name),
842 "Logitech Wireless Device PID:%04x",
843 dj_hiddev->product);
844 }
845
846 if (djrcv_dev->type == recvr_type_27mhz)
847 dj_hiddev->group = HID_GROUP_LOGITECH_27MHZ_DEVICE;
848 else
849 dj_hiddev->group = HID_GROUP_LOGITECH_DJ_DEVICE;
850
851 memcpy(dj_hiddev->phys, djrcv_hdev->phys, sizeof(djrcv_hdev->phys));
852 snprintf(tmpstr, sizeof(tmpstr), ":%d", device_index);
853 strlcat(dj_hiddev->phys, tmpstr, sizeof(dj_hiddev->phys));
854
855 dj_dev = kzalloc_obj(struct dj_device);
856
857 if (!dj_dev) {
858 hid_err(djrcv_hdev, "%s: failed allocating dj_dev\n", __func__);
859 goto dj_device_allocate_fail;
860 }
861
862 dj_dev->reports_supported = workitem->reports_supported;
863 dj_dev->hdev = dj_hiddev;
864 dj_dev->dj_receiver_dev = djrcv_dev;
865 dj_dev->device_index = device_index;
866 dj_hiddev->driver_data = dj_dev;
867
868 spin_lock_irqsave(&djrcv_dev->lock, flags);
869 djrcv_dev->paired_dj_devices[device_index] = dj_dev;
870 spin_unlock_irqrestore(&djrcv_dev->lock, flags);
871
872 if (hid_add_device(dj_hiddev)) {
873 hid_err(djrcv_hdev, "%s: failed adding dj_device\n", __func__);
874 goto hid_add_device_fail;
875 }
876
877 return;
878
879 hid_add_device_fail:
880 spin_lock_irqsave(&djrcv_dev->lock, flags);
881 djrcv_dev->paired_dj_devices[device_index] = NULL;
882 spin_unlock_irqrestore(&djrcv_dev->lock, flags);
883 kfree(dj_dev);
884 dj_device_allocate_fail:
885 hid_destroy_device(dj_hiddev);
886 }
887
delayedwork_callback(struct work_struct * work)888 static void delayedwork_callback(struct work_struct *work)
889 {
890 struct dj_receiver_dev *djrcv_dev =
891 container_of(work, struct dj_receiver_dev, work);
892
893 struct dj_workitem workitem;
894 unsigned long flags;
895 int count;
896
897 dbg_hid("%s\n", __func__);
898
899 spin_lock_irqsave(&djrcv_dev->lock, flags);
900
901 /*
902 * Since we attach to multiple interfaces, we may get scheduled before
903 * we are bound to the HID++ interface, catch this.
904 */
905 if (!djrcv_dev->ready) {
906 pr_warn("%s: delayedwork queued before hidpp interface was enumerated\n",
907 __func__);
908 spin_unlock_irqrestore(&djrcv_dev->lock, flags);
909 return;
910 }
911
912 count = kfifo_out(&djrcv_dev->notif_fifo, &workitem, sizeof(workitem));
913
914 if (count != sizeof(workitem)) {
915 spin_unlock_irqrestore(&djrcv_dev->lock, flags);
916 return;
917 }
918
919 if (!kfifo_is_empty(&djrcv_dev->notif_fifo))
920 schedule_work(&djrcv_dev->work);
921
922 spin_unlock_irqrestore(&djrcv_dev->lock, flags);
923
924 switch (workitem.type) {
925 case WORKITEM_TYPE_PAIRED:
926 logi_dj_recv_add_djhid_device(djrcv_dev, &workitem);
927 break;
928 case WORKITEM_TYPE_UNPAIRED:
929 logi_dj_recv_destroy_djhid_device(djrcv_dev, &workitem);
930 break;
931 case WORKITEM_TYPE_UNKNOWN:
932 if (!djrcv_dev->dj_mode)
933 logi_dj_recv_switch_to_dj_mode(djrcv_dev, 0);
934
935 logi_dj_recv_query_paired_devices(djrcv_dev);
936 break;
937 case WORKITEM_TYPE_EMPTY:
938 dbg_hid("%s: device list is empty\n", __func__);
939 break;
940 }
941 }
942
943 /*
944 * Sometimes we receive reports for which we do not have a paired dj_device
945 * associated with the device_index or report-type to forward the report to.
946 * This means that the original "device paired" notification corresponding
947 * to the dj_device never arrived to this driver. Possible reasons for this are:
948 * 1) hid-core discards all packets coming from a device during probe().
949 * 2) if the receiver is plugged into a KVM switch then the pairing reports
950 * are only forwarded to it if the focus is on this PC.
951 * This function deals with this by re-asking the receiver for the list of
952 * connected devices in the delayed work callback.
953 * This function MUST be called with djrcv->lock held.
954 */
logi_dj_recv_queue_unknown_work(struct dj_receiver_dev * djrcv_dev)955 static void logi_dj_recv_queue_unknown_work(struct dj_receiver_dev *djrcv_dev)
956 {
957 struct dj_workitem workitem = { .type = WORKITEM_TYPE_UNKNOWN };
958
959 /* Rate limit queries done because of unhandled reports to 2/sec */
960 if (time_before(jiffies, djrcv_dev->last_query + HZ / 2))
961 return;
962
963 kfifo_in(&djrcv_dev->notif_fifo, &workitem, sizeof(workitem));
964 schedule_work(&djrcv_dev->work);
965 }
966
logi_dj_recv_queue_notification(struct dj_receiver_dev * djrcv_dev,struct dj_report * dj_report)967 static void logi_dj_recv_queue_notification(struct dj_receiver_dev *djrcv_dev,
968 struct dj_report *dj_report)
969 {
970 /* We are called from atomic context (tasklet && djrcv->lock held) */
971 struct dj_workitem workitem = {
972 .device_index = dj_report->device_index,
973 };
974
975 switch (dj_report->report_type) {
976 case REPORT_TYPE_NOTIF_DEVICE_PAIRED:
977 workitem.type = WORKITEM_TYPE_PAIRED;
978 if (dj_report->report_params[DEVICE_PAIRED_PARAM_SPFUNCTION] &
979 SPFUNCTION_DEVICE_LIST_EMPTY) {
980 workitem.type = WORKITEM_TYPE_EMPTY;
981 break;
982 }
983 fallthrough;
984 case REPORT_TYPE_NOTIF_DEVICE_UNPAIRED:
985 workitem.quad_id_msb =
986 dj_report->report_params[DEVICE_PAIRED_PARAM_EQUAD_ID_MSB];
987 workitem.quad_id_lsb =
988 dj_report->report_params[DEVICE_PAIRED_PARAM_EQUAD_ID_LSB];
989 workitem.reports_supported = get_unaligned_le32(
990 dj_report->report_params +
991 DEVICE_PAIRED_RF_REPORT_TYPE);
992 workitem.reports_supported |= HIDPP;
993 if (dj_report->report_type == REPORT_TYPE_NOTIF_DEVICE_UNPAIRED)
994 workitem.type = WORKITEM_TYPE_UNPAIRED;
995 break;
996 default:
997 logi_dj_recv_queue_unknown_work(djrcv_dev);
998 return;
999 }
1000
1001 kfifo_in(&djrcv_dev->notif_fifo, &workitem, sizeof(workitem));
1002 schedule_work(&djrcv_dev->work);
1003 }
1004
1005 /*
1006 * Some quad/bluetooth keyboards have a builtin touchpad in this case we see
1007 * only 1 paired device with a device_type of REPORT_TYPE_KEYBOARD. For the
1008 * touchpad to work we must also forward mouse input reports to the dj_hiddev
1009 * created for the keyboard (instead of forwarding them to a second paired
1010 * device with a device_type of REPORT_TYPE_MOUSE as we normally would).
1011 *
1012 * On Dinovo receivers the keyboard's touchpad and an optional paired actual
1013 * mouse send separate input reports, INPUT(2) aka STD_MOUSE for the mouse
1014 * and INPUT(5) aka KBD_MOUSE for the keyboard's touchpad.
1015 *
1016 * On MX5x00 receivers (which can also be paired with a Dinovo keyboard)
1017 * INPUT(2) is used for both an optional paired actual mouse and for the
1018 * keyboard's touchpad.
1019 */
1020 static const u16 kbd_builtin_touchpad_ids[] = {
1021 0xb309, /* Dinovo Edge */
1022 0xb30c, /* Dinovo Mini */
1023 };
1024
logi_hidpp_dev_conn_notif_equad(struct hid_device * hdev,struct hidpp_event * hidpp_report,struct dj_workitem * workitem)1025 static void logi_hidpp_dev_conn_notif_equad(struct hid_device *hdev,
1026 struct hidpp_event *hidpp_report,
1027 struct dj_workitem *workitem)
1028 {
1029 struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);
1030 int i, id;
1031
1032 workitem->type = WORKITEM_TYPE_PAIRED;
1033 workitem->device_type = hidpp_report->params[HIDPP_PARAM_DEVICE_INFO] &
1034 HIDPP_DEVICE_TYPE_MASK;
1035 workitem->quad_id_msb = hidpp_report->params[HIDPP_PARAM_EQUAD_MSB];
1036 workitem->quad_id_lsb = hidpp_report->params[HIDPP_PARAM_EQUAD_LSB];
1037 switch (workitem->device_type) {
1038 case REPORT_TYPE_KEYBOARD:
1039 workitem->reports_supported |= STD_KEYBOARD | MULTIMEDIA |
1040 POWER_KEYS | MEDIA_CENTER |
1041 HIDPP;
1042 id = (workitem->quad_id_msb << 8) | workitem->quad_id_lsb;
1043 for (i = 0; i < ARRAY_SIZE(kbd_builtin_touchpad_ids); i++) {
1044 if (id == kbd_builtin_touchpad_ids[i]) {
1045 if (djrcv_dev->type == recvr_type_dinovo)
1046 workitem->reports_supported |= KBD_MOUSE;
1047 else
1048 workitem->reports_supported |= STD_MOUSE;
1049 break;
1050 }
1051 }
1052 break;
1053 case REPORT_TYPE_MOUSE:
1054 workitem->reports_supported |= STD_MOUSE | HIDPP | MULTIMEDIA;
1055 break;
1056 }
1057 }
1058
logi_hidpp_dev_conn_notif_27mhz(struct hid_device * hdev,struct hidpp_event * hidpp_report,struct dj_workitem * workitem)1059 static void logi_hidpp_dev_conn_notif_27mhz(struct hid_device *hdev,
1060 struct hidpp_event *hidpp_report,
1061 struct dj_workitem *workitem)
1062 {
1063 workitem->type = WORKITEM_TYPE_PAIRED;
1064 workitem->quad_id_lsb = hidpp_report->params[HIDPP_PARAM_27MHZ_DEVID];
1065 switch (hidpp_report->device_index) {
1066 case 1: /* Index 1 is always a mouse */
1067 case 2: /* Index 2 is always a mouse */
1068 workitem->device_type = HIDPP_DEVICE_TYPE_MOUSE;
1069 workitem->reports_supported |= STD_MOUSE | HIDPP;
1070 break;
1071 case 3: /* Index 3 is always the keyboard */
1072 if (hidpp_report->params[HIDPP_PARAM_DEVICE_INFO] & HIDPP_27MHZ_SECURE_MASK) {
1073 hid_info(hdev, "Keyboard connection is encrypted\n");
1074 } else {
1075 hid_warn(hdev, "Keyboard events are send over the air in plain-text / unencrypted\n");
1076 hid_warn(hdev, "See: https://gitlab.freedesktop.org/jwrdegoede/logitech-27mhz-keyboard-encryption-setup/\n");
1077 }
1078 fallthrough;
1079 case 4: /* Index 4 is used for an optional separate numpad */
1080 workitem->device_type = HIDPP_DEVICE_TYPE_KEYBOARD;
1081 workitem->reports_supported |= STD_KEYBOARD | MULTIMEDIA |
1082 POWER_KEYS | HIDPP;
1083 break;
1084 default:
1085 hid_warn(hdev, "%s: unexpected device-index %d", __func__,
1086 hidpp_report->device_index);
1087 }
1088 }
1089
logi_hidpp_recv_queue_notif(struct hid_device * hdev,struct hidpp_event * hidpp_report)1090 static void logi_hidpp_recv_queue_notif(struct hid_device *hdev,
1091 struct hidpp_event *hidpp_report)
1092 {
1093 /* We are called from atomic context (tasklet && djrcv->lock held) */
1094 struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);
1095 const char *device_type = "UNKNOWN";
1096 struct dj_workitem workitem = {
1097 .type = WORKITEM_TYPE_EMPTY,
1098 .device_index = hidpp_report->device_index,
1099 };
1100
1101 switch (hidpp_report->params[HIDPP_PARAM_PROTO_TYPE]) {
1102 case 0x01:
1103 device_type = "Bluetooth";
1104 /* Bluetooth connect packet contents is the same as (e)QUAD */
1105 logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
1106 if (!(hidpp_report->params[HIDPP_PARAM_DEVICE_INFO] &
1107 HIDPP_MANUFACTURER_MASK)) {
1108 hid_info(hdev, "Non Logitech device connected on slot %d\n",
1109 hidpp_report->device_index);
1110 workitem.reports_supported &= ~HIDPP;
1111 }
1112 break;
1113 case 0x02:
1114 device_type = "27 Mhz";
1115 logi_hidpp_dev_conn_notif_27mhz(hdev, hidpp_report, &workitem);
1116 break;
1117 case 0x03:
1118 device_type = "QUAD or eQUAD";
1119 logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
1120 break;
1121 case 0x04:
1122 device_type = "eQUAD step 4 DJ";
1123 logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
1124 break;
1125 case 0x05:
1126 device_type = "DFU Lite";
1127 break;
1128 case 0x06:
1129 device_type = "eQUAD step 4 Lite";
1130 logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
1131 break;
1132 case 0x07:
1133 device_type = "eQUAD step 4 Gaming";
1134 logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
1135 workitem.reports_supported |= STD_KEYBOARD;
1136 break;
1137 case 0x08:
1138 device_type = "eQUAD step 4 for gamepads";
1139 break;
1140 case 0x0a:
1141 device_type = "eQUAD nano Lite";
1142 logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
1143 break;
1144 case 0x0c:
1145 device_type = "eQUAD Lightspeed 1";
1146 logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
1147 workitem.reports_supported |= STD_KEYBOARD;
1148 break;
1149 case 0x0d:
1150 device_type = "eQUAD Lightspeed 1.1";
1151 logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
1152 workitem.reports_supported |= STD_KEYBOARD;
1153 break;
1154 case 0x0f:
1155 case 0x11:
1156 device_type = "eQUAD Lightspeed 1.2";
1157 logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
1158 workitem.reports_supported |= STD_KEYBOARD;
1159 break;
1160 case 0x10:
1161 device_type = "Bolt";
1162 logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
1163 break;
1164 }
1165
1166 /* custom receiver device (eg. powerplay) */
1167 if (hidpp_report->device_index == 7) {
1168 workitem.reports_supported |= HIDPP;
1169 }
1170
1171 if (workitem.type == WORKITEM_TYPE_EMPTY) {
1172 hid_warn(hdev,
1173 "unusable device of type %s (0x%02x) connected on slot %d",
1174 device_type,
1175 hidpp_report->params[HIDPP_PARAM_PROTO_TYPE],
1176 hidpp_report->device_index);
1177 return;
1178 }
1179
1180 hid_info(hdev, "device of type %s (0x%02x) connected on slot %d",
1181 device_type, hidpp_report->params[HIDPP_PARAM_PROTO_TYPE],
1182 hidpp_report->device_index);
1183
1184 kfifo_in(&djrcv_dev->notif_fifo, &workitem, sizeof(workitem));
1185 schedule_work(&djrcv_dev->work);
1186 }
1187
logi_dj_recv_forward_null_report(struct dj_receiver_dev * djrcv_dev,struct dj_report * dj_report)1188 static void logi_dj_recv_forward_null_report(struct dj_receiver_dev *djrcv_dev,
1189 struct dj_report *dj_report)
1190 {
1191 /* We are called from atomic context (tasklet && djrcv->lock held) */
1192 unsigned int i;
1193 u8 reportbuffer[MAX_REPORT_SIZE];
1194 struct dj_device *djdev;
1195
1196 djdev = djrcv_dev->paired_dj_devices[dj_report->device_index];
1197
1198 memset(reportbuffer, 0, sizeof(reportbuffer));
1199
1200 for (i = 0; i < NUMBER_OF_HID_REPORTS; i++) {
1201 if (djdev->reports_supported & (1 << i)) {
1202 reportbuffer[0] = i;
1203 if (hid_input_report(djdev->hdev,
1204 HID_INPUT_REPORT,
1205 reportbuffer,
1206 hid_reportid_size_map[i], 1)) {
1207 dbg_hid("hid_input_report error sending null "
1208 "report\n");
1209 }
1210 }
1211 }
1212 }
1213
logi_dj_recv_forward_dj(struct dj_receiver_dev * djrcv_dev,struct dj_report * dj_report)1214 static void logi_dj_recv_forward_dj(struct dj_receiver_dev *djrcv_dev,
1215 struct dj_report *dj_report)
1216 {
1217 /* We are called from atomic context (tasklet && djrcv->lock held) */
1218 struct dj_device *dj_device;
1219
1220 dj_device = djrcv_dev->paired_dj_devices[dj_report->device_index];
1221
1222 if ((dj_report->report_type > ARRAY_SIZE(hid_reportid_size_map) - 1) ||
1223 (hid_reportid_size_map[dj_report->report_type] == 0)) {
1224 dbg_hid("invalid report type:%x\n", dj_report->report_type);
1225 return;
1226 }
1227
1228 if (hid_input_report(dj_device->hdev,
1229 HID_INPUT_REPORT, &dj_report->report_type,
1230 hid_reportid_size_map[dj_report->report_type], 1)) {
1231 dbg_hid("hid_input_report error\n");
1232 }
1233 }
1234
logi_dj_recv_forward_report(struct dj_device * dj_dev,u8 * data,int size)1235 static void logi_dj_recv_forward_report(struct dj_device *dj_dev, u8 *data,
1236 int size)
1237 {
1238 /* We are called from atomic context (tasklet && djrcv->lock held) */
1239 if (hid_input_report(dj_dev->hdev, HID_INPUT_REPORT, data, size, 1))
1240 dbg_hid("hid_input_report error\n");
1241 }
1242
logi_dj_recv_forward_input_report(struct hid_device * hdev,u8 * data,int size)1243 static void logi_dj_recv_forward_input_report(struct hid_device *hdev,
1244 u8 *data, int size)
1245 {
1246 struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);
1247 struct dj_device *dj_dev;
1248 unsigned long flags;
1249 u8 report = data[0];
1250 int i;
1251
1252 if (report > REPORT_TYPE_RFREPORT_LAST) {
1253 hid_err(hdev, "Unexpected input report number %d\n", report);
1254 return;
1255 }
1256
1257 spin_lock_irqsave(&djrcv_dev->lock, flags);
1258 for (i = 0; i < (DJ_MAX_PAIRED_DEVICES + DJ_DEVICE_INDEX_MIN); i++) {
1259 dj_dev = djrcv_dev->paired_dj_devices[i];
1260 if (dj_dev && (dj_dev->reports_supported & BIT(report))) {
1261 logi_dj_recv_forward_report(dj_dev, data, size);
1262 spin_unlock_irqrestore(&djrcv_dev->lock, flags);
1263 return;
1264 }
1265 }
1266
1267 logi_dj_recv_queue_unknown_work(djrcv_dev);
1268 spin_unlock_irqrestore(&djrcv_dev->lock, flags);
1269
1270 dbg_hid("No dj-devs handling input report number %d\n", report);
1271 }
1272
logi_dj_recv_send_report(struct dj_receiver_dev * djrcv_dev,struct dj_report * dj_report)1273 static int logi_dj_recv_send_report(struct dj_receiver_dev *djrcv_dev,
1274 struct dj_report *dj_report)
1275 {
1276 struct hid_device *hdev = djrcv_dev->hidpp;
1277 struct hid_report *report;
1278 struct hid_report_enum *output_report_enum;
1279 u8 *data = (u8 *)(&dj_report->device_index);
1280 unsigned int i;
1281
1282 output_report_enum = &hdev->report_enum[HID_OUTPUT_REPORT];
1283 report = output_report_enum->report_id_hash[REPORT_ID_DJ_SHORT];
1284
1285 if (!report) {
1286 hid_err(hdev, "%s: unable to find dj report\n", __func__);
1287 return -ENODEV;
1288 }
1289
1290 for (i = 0; i < DJREPORT_SHORT_LENGTH - 1; i++)
1291 report->field[0]->value[i] = data[i];
1292
1293 hid_hw_request(hdev, report, HID_REQ_SET_REPORT);
1294
1295 return 0;
1296 }
1297
logi_dj_recv_query_hidpp_devices(struct dj_receiver_dev * djrcv_dev)1298 static int logi_dj_recv_query_hidpp_devices(struct dj_receiver_dev *djrcv_dev)
1299 {
1300 static const u8 template[] = {
1301 REPORT_ID_HIDPP_SHORT,
1302 HIDPP_RECEIVER_INDEX,
1303 HIDPP_SET_REGISTER,
1304 HIDPP_REG_CONNECTION_STATE,
1305 HIDPP_FAKE_DEVICE_ARRIVAL,
1306 0x00, 0x00
1307 };
1308 u8 *hidpp_report;
1309 int retval;
1310
1311 hidpp_report = kmemdup(template, sizeof(template), GFP_KERNEL);
1312 if (!hidpp_report)
1313 return -ENOMEM;
1314
1315 retval = hid_hw_raw_request(djrcv_dev->hidpp,
1316 REPORT_ID_HIDPP_SHORT,
1317 hidpp_report, sizeof(template),
1318 HID_OUTPUT_REPORT,
1319 HID_REQ_SET_REPORT);
1320
1321 kfree(hidpp_report);
1322 return (retval < 0) ? retval : 0;
1323 }
1324
logi_dj_recv_query_paired_devices(struct dj_receiver_dev * djrcv_dev)1325 static int logi_dj_recv_query_paired_devices(struct dj_receiver_dev *djrcv_dev)
1326 {
1327 struct dj_report *dj_report;
1328 int retval;
1329
1330 djrcv_dev->last_query = jiffies;
1331
1332 if (!djrcv_dev->dj_mode)
1333 return 0;
1334
1335 if (djrcv_dev->type != recvr_type_dj) {
1336 retval = logi_dj_recv_query_hidpp_devices(djrcv_dev);
1337 goto out;
1338 }
1339
1340 dj_report = kzalloc_obj(struct dj_report);
1341 if (!dj_report)
1342 return -ENOMEM;
1343 dj_report->report_id = REPORT_ID_DJ_SHORT;
1344 dj_report->device_index = HIDPP_RECEIVER_INDEX;
1345 dj_report->report_type = REPORT_TYPE_CMD_GET_PAIRED_DEVICES;
1346 retval = logi_dj_recv_send_report(djrcv_dev, dj_report);
1347 kfree(dj_report);
1348 out:
1349 if (retval < 0)
1350 hid_err(djrcv_dev->hidpp, "%s error:%d\n", __func__, retval);
1351
1352 return retval;
1353 }
1354
1355
logi_dj_recv_switch_to_dj_mode(struct dj_receiver_dev * djrcv_dev,unsigned timeout)1356 static int logi_dj_recv_switch_to_dj_mode(struct dj_receiver_dev *djrcv_dev,
1357 unsigned timeout)
1358 {
1359 struct hid_device *hdev = djrcv_dev->hidpp;
1360 struct dj_report *dj_report;
1361 u8 *buf;
1362 int retval = 0;
1363
1364 dj_report = kzalloc_obj(struct dj_report);
1365 if (!dj_report)
1366 return -ENOMEM;
1367
1368 if (djrcv_dev->type == recvr_type_dj) {
1369 dj_report->report_id = REPORT_ID_DJ_SHORT;
1370 dj_report->device_index = HIDPP_RECEIVER_INDEX;
1371 dj_report->report_type = REPORT_TYPE_CMD_SWITCH;
1372 dj_report->report_params[CMD_SWITCH_PARAM_DEVBITFIELD] = 0x3F;
1373 dj_report->report_params[CMD_SWITCH_PARAM_TIMEOUT_SECONDS] =
1374 (u8)timeout;
1375
1376 retval = logi_dj_recv_send_report(djrcv_dev, dj_report);
1377 if (retval)
1378 goto out;
1379
1380 /*
1381 * Ugly sleep to work around a USB 3.0 bug when the receiver is
1382 * still processing the "switch-to-dj" command while we send an
1383 * other command.
1384 * 50 msec should gives enough time to the receiver to be ready.
1385 */
1386 msleep(50);
1387 }
1388
1389 /*
1390 * Magical bits to set up hidpp notifications when the dj devices
1391 * are connected/disconnected.
1392 *
1393 * We can reuse dj_report because HIDPP_REPORT_SHORT_LENGTH is smaller
1394 * than DJREPORT_SHORT_LENGTH.
1395 */
1396 buf = (u8 *)dj_report;
1397
1398 memset(buf, 0, HIDPP_REPORT_SHORT_LENGTH);
1399
1400 buf[0] = REPORT_ID_HIDPP_SHORT;
1401 buf[1] = HIDPP_RECEIVER_INDEX;
1402 buf[2] = 0x80;
1403 buf[3] = 0x00;
1404 buf[4] = 0x00;
1405 buf[5] = 0x09;
1406 buf[6] = 0x00;
1407
1408 retval = hid_hw_raw_request(hdev, REPORT_ID_HIDPP_SHORT, buf,
1409 HIDPP_REPORT_SHORT_LENGTH, HID_OUTPUT_REPORT,
1410 HID_REQ_SET_REPORT);
1411
1412 out:
1413 kfree(dj_report);
1414
1415 if (retval < 0)
1416 hid_err(hdev, "%s error:%d\n", __func__, retval);
1417
1418 djrcv_dev->dj_mode = retval >= 0;
1419 return retval;
1420 }
1421
1422
logi_dj_ll_open(struct hid_device * hid)1423 static int logi_dj_ll_open(struct hid_device *hid)
1424 {
1425 dbg_hid("%s: %s\n", __func__, hid->phys);
1426 return 0;
1427
1428 }
1429
logi_dj_ll_close(struct hid_device * hid)1430 static void logi_dj_ll_close(struct hid_device *hid)
1431 {
1432 dbg_hid("%s: %s\n", __func__, hid->phys);
1433 }
1434
1435 /*
1436 * Register 0xB5 is "pairing information". It is solely intended for the
1437 * receiver, so do not overwrite the device index.
1438 */
1439 static u8 unifying_pairing_query[] = { REPORT_ID_HIDPP_SHORT,
1440 HIDPP_RECEIVER_INDEX,
1441 HIDPP_GET_LONG_REGISTER,
1442 HIDPP_REG_PAIRING_INFORMATION };
1443 static u8 unifying_pairing_answer[] = { REPORT_ID_HIDPP_LONG,
1444 HIDPP_RECEIVER_INDEX,
1445 HIDPP_GET_LONG_REGISTER,
1446 HIDPP_REG_PAIRING_INFORMATION };
1447
logi_dj_ll_raw_request(struct hid_device * hid,unsigned char reportnum,__u8 * buf,size_t count,unsigned char report_type,int reqtype)1448 static int logi_dj_ll_raw_request(struct hid_device *hid,
1449 unsigned char reportnum, __u8 *buf,
1450 size_t count, unsigned char report_type,
1451 int reqtype)
1452 {
1453 struct dj_device *djdev = hid->driver_data;
1454 struct dj_receiver_dev *djrcv_dev = djdev->dj_receiver_dev;
1455 u8 *out_buf;
1456 int ret;
1457
1458 if ((buf[0] == REPORT_ID_HIDPP_SHORT) ||
1459 (buf[0] == REPORT_ID_HIDPP_LONG) ||
1460 (buf[0] == REPORT_ID_HIDPP_VERY_LONG)) {
1461 if (count < 2)
1462 return -EINVAL;
1463
1464 /* special case where we should not overwrite
1465 * the device_index */
1466 if (count == 7 && !memcmp(buf, unifying_pairing_query,
1467 sizeof(unifying_pairing_query)))
1468 buf[4] = (buf[4] & 0xf0) | (djdev->device_index - 1);
1469 else
1470 buf[1] = djdev->device_index;
1471 return hid_hw_raw_request(djrcv_dev->hidpp, reportnum, buf,
1472 count, report_type, reqtype);
1473 }
1474
1475 if (buf[0] != REPORT_TYPE_LEDS)
1476 return -EINVAL;
1477
1478 if (djrcv_dev->type != recvr_type_dj && count >= 2) {
1479 unsigned char led_report_id = 0;
1480
1481 if (!djrcv_dev->keyboard) {
1482 hid_warn(hid, "Received REPORT_TYPE_LEDS request before the keyboard interface was enumerated\n");
1483 return 0;
1484 }
1485
1486 /* This Lightspeed receiver expects LED reports with report ID 1 */
1487 if (djrcv_dev->type == recvr_type_gaming_hidpp_ls_1_3)
1488 led_report_id = 1;
1489
1490 /* usbhid overrides the report ID and ignores the first byte */
1491 return hid_hw_raw_request(djrcv_dev->keyboard, led_report_id, buf, count,
1492 report_type, reqtype);
1493 }
1494
1495 out_buf = kzalloc(DJREPORT_SHORT_LENGTH, GFP_ATOMIC);
1496 if (!out_buf)
1497 return -ENOMEM;
1498
1499 if (count > DJREPORT_SHORT_LENGTH - 2)
1500 count = DJREPORT_SHORT_LENGTH - 2;
1501
1502 out_buf[0] = REPORT_ID_DJ_SHORT;
1503 out_buf[1] = djdev->device_index;
1504 memcpy(out_buf + 2, buf, count);
1505
1506 ret = hid_hw_raw_request(djrcv_dev->hidpp, out_buf[0], out_buf,
1507 DJREPORT_SHORT_LENGTH, report_type, reqtype);
1508
1509 kfree(out_buf);
1510 return ret;
1511 }
1512
rdcat(char * rdesc,unsigned int * rsize,const char * data,unsigned int size)1513 static void rdcat(char *rdesc, unsigned int *rsize, const char *data, unsigned int size)
1514 {
1515 memcpy(rdesc + *rsize, data, size);
1516 *rsize += size;
1517 }
1518
logi_dj_ll_parse(struct hid_device * hid)1519 static int logi_dj_ll_parse(struct hid_device *hid)
1520 {
1521 struct dj_device *djdev = hid->driver_data;
1522 unsigned int rsize = 0;
1523 char *rdesc;
1524 int retval;
1525
1526 dbg_hid("%s\n", __func__);
1527
1528 djdev->hdev->version = 0x0111;
1529 djdev->hdev->country = 0x00;
1530
1531 rdesc = kmalloc(MAX_RDESC_SIZE, GFP_KERNEL);
1532 if (!rdesc)
1533 return -ENOMEM;
1534
1535 if (djdev->reports_supported & STD_KEYBOARD) {
1536 dbg_hid("%s: sending a kbd descriptor, reports_supported: %llx\n",
1537 __func__, djdev->reports_supported);
1538 if (djdev->dj_receiver_dev->type == recvr_type_gaming_hidpp_ls_1_3)
1539 rdcat(rdesc, &rsize, kbd_lightspeed_1_3_descriptor,
1540 sizeof(kbd_lightspeed_1_3_descriptor));
1541 else
1542 rdcat(rdesc, &rsize, kbd_descriptor, sizeof(kbd_descriptor));
1543 }
1544
1545 if (djdev->reports_supported & STD_MOUSE) {
1546 dbg_hid("%s: sending a mouse descriptor, reports_supported: %llx\n",
1547 __func__, djdev->reports_supported);
1548 if (djdev->dj_receiver_dev->type == recvr_type_gaming_hidpp ||
1549 djdev->dj_receiver_dev->type == recvr_type_mouse_only)
1550 rdcat(rdesc, &rsize, mse_high_res_descriptor,
1551 sizeof(mse_high_res_descriptor));
1552 else if (djdev->dj_receiver_dev->type == recvr_type_gaming_hidpp_ls_1_3)
1553 rdcat(rdesc, &rsize, mse_high_res_ls_1_3_descriptor,
1554 sizeof(mse_high_res_ls_1_3_descriptor));
1555 else if (djdev->dj_receiver_dev->type == recvr_type_27mhz)
1556 rdcat(rdesc, &rsize, mse_27mhz_descriptor,
1557 sizeof(mse_27mhz_descriptor));
1558 else if (recvr_type_is_bluetooth(djdev->dj_receiver_dev->type))
1559 rdcat(rdesc, &rsize, mse_bluetooth_descriptor,
1560 sizeof(mse_bluetooth_descriptor));
1561 else
1562 rdcat(rdesc, &rsize, mse_descriptor,
1563 sizeof(mse_descriptor));
1564 }
1565
1566 if (djdev->reports_supported & KBD_MOUSE) {
1567 dbg_hid("%s: sending a kbd-mouse descriptor, reports_supported: %llx\n",
1568 __func__, djdev->reports_supported);
1569 rdcat(rdesc, &rsize, mse5_bluetooth_descriptor,
1570 sizeof(mse5_bluetooth_descriptor));
1571 }
1572
1573 if (djdev->reports_supported & MULTIMEDIA) {
1574 dbg_hid("%s: sending a multimedia report descriptor: %llx\n",
1575 __func__, djdev->reports_supported);
1576 rdcat(rdesc, &rsize, consumer_descriptor, sizeof(consumer_descriptor));
1577 }
1578
1579 if (djdev->reports_supported & POWER_KEYS) {
1580 dbg_hid("%s: sending a power keys report descriptor: %llx\n",
1581 __func__, djdev->reports_supported);
1582 rdcat(rdesc, &rsize, syscontrol_descriptor, sizeof(syscontrol_descriptor));
1583 }
1584
1585 if (djdev->reports_supported & MEDIA_CENTER) {
1586 dbg_hid("%s: sending a media center report descriptor: %llx\n",
1587 __func__, djdev->reports_supported);
1588 rdcat(rdesc, &rsize, media_descriptor, sizeof(media_descriptor));
1589 }
1590
1591 if (djdev->reports_supported & KBD_LEDS) {
1592 dbg_hid("%s: need to send kbd leds report descriptor: %llx\n",
1593 __func__, djdev->reports_supported);
1594 }
1595
1596 if (djdev->reports_supported & HIDPP) {
1597 dbg_hid("%s: sending a HID++ descriptor, reports_supported: %llx\n",
1598 __func__, djdev->reports_supported);
1599 rdcat(rdesc, &rsize, hidpp_descriptor,
1600 sizeof(hidpp_descriptor));
1601 }
1602
1603 retval = hid_parse_report(hid, rdesc, rsize);
1604 kfree(rdesc);
1605
1606 return retval;
1607 }
1608
logi_dj_ll_start(struct hid_device * hid)1609 static int logi_dj_ll_start(struct hid_device *hid)
1610 {
1611 dbg_hid("%s\n", __func__);
1612 return 0;
1613 }
1614
logi_dj_ll_stop(struct hid_device * hid)1615 static void logi_dj_ll_stop(struct hid_device *hid)
1616 {
1617 dbg_hid("%s\n", __func__);
1618 }
1619
logi_dj_ll_may_wakeup(struct hid_device * hid)1620 static bool logi_dj_ll_may_wakeup(struct hid_device *hid)
1621 {
1622 struct dj_device *djdev = hid->driver_data;
1623 struct dj_receiver_dev *djrcv_dev = djdev->dj_receiver_dev;
1624
1625 return hid_hw_may_wakeup(djrcv_dev->hidpp);
1626 }
1627
1628 static const struct hid_ll_driver logi_dj_ll_driver = {
1629 .parse = logi_dj_ll_parse,
1630 .start = logi_dj_ll_start,
1631 .stop = logi_dj_ll_stop,
1632 .open = logi_dj_ll_open,
1633 .close = logi_dj_ll_close,
1634 .raw_request = logi_dj_ll_raw_request,
1635 .may_wakeup = logi_dj_ll_may_wakeup,
1636 };
1637
logi_dj_dj_event(struct hid_device * hdev,struct hid_report * report,u8 * data,int size)1638 static int logi_dj_dj_event(struct hid_device *hdev,
1639 struct hid_report *report, u8 *data,
1640 int size)
1641 {
1642 struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);
1643 struct dj_report *dj_report = (struct dj_report *) data;
1644 unsigned long flags;
1645
1646 /*
1647 * Here we receive all data coming from iface 2, there are 3 cases:
1648 *
1649 * 1) Data is intended for this driver i. e. data contains arrival,
1650 * departure, etc notifications, in which case we queue them for delayed
1651 * processing by the work queue. We return 1 to hid-core as no further
1652 * processing is required from it.
1653 *
1654 * 2) Data informs a connection change, if the change means rf link
1655 * loss, then we must send a null report to the upper layer to discard
1656 * potentially pressed keys that may be repeated forever by the input
1657 * layer. Return 1 to hid-core as no further processing is required.
1658 *
1659 * 3) Data is an actual input event from a paired DJ device in which
1660 * case we forward it to the correct hid device (via hid_input_report()
1661 * ) and return 1 so hid-core does not anything else with it.
1662 */
1663
1664 if ((dj_report->device_index < DJ_DEVICE_INDEX_MIN) ||
1665 (dj_report->device_index > DJ_DEVICE_INDEX_MAX)) {
1666 /*
1667 * Device index is wrong, bail out.
1668 * This driver can ignore safely the receiver notifications,
1669 * so ignore those reports too.
1670 */
1671 if (dj_report->device_index != DJ_RECEIVER_INDEX)
1672 hid_err(hdev, "%s: invalid receiver index:%d\n",
1673 __func__, dj_report->device_index);
1674 return false;
1675 }
1676
1677 spin_lock_irqsave(&djrcv_dev->lock, flags);
1678
1679 if (!djrcv_dev->paired_dj_devices[dj_report->device_index]) {
1680 /* received an event for an unknown device, bail out */
1681 logi_dj_recv_queue_notification(djrcv_dev, dj_report);
1682 goto out;
1683 }
1684
1685 switch (dj_report->report_type) {
1686 case REPORT_TYPE_NOTIF_DEVICE_PAIRED:
1687 /* pairing notifications are handled above the switch */
1688 break;
1689 case REPORT_TYPE_NOTIF_DEVICE_UNPAIRED:
1690 logi_dj_recv_queue_notification(djrcv_dev, dj_report);
1691 break;
1692 case REPORT_TYPE_NOTIF_CONNECTION_STATUS:
1693 if (dj_report->report_params[CONNECTION_STATUS_PARAM_STATUS] ==
1694 STATUS_LINKLOSS) {
1695 logi_dj_recv_forward_null_report(djrcv_dev, dj_report);
1696 }
1697 break;
1698 default:
1699 logi_dj_recv_forward_dj(djrcv_dev, dj_report);
1700 }
1701
1702 out:
1703 spin_unlock_irqrestore(&djrcv_dev->lock, flags);
1704
1705 return true;
1706 }
1707
logi_dj_hidpp_event(struct hid_device * hdev,struct hid_report * report,u8 * data,int size)1708 static int logi_dj_hidpp_event(struct hid_device *hdev,
1709 struct hid_report *report, u8 *data,
1710 int size)
1711 {
1712 struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);
1713 struct hidpp_event *hidpp_report = (struct hidpp_event *) data;
1714 struct dj_device *dj_dev;
1715 unsigned long flags;
1716 u8 device_index = hidpp_report->device_index;
1717
1718 if (device_index == HIDPP_RECEIVER_INDEX) {
1719 /* special case were the device wants to know its unifying
1720 * name */
1721 if (size == HIDPP_REPORT_LONG_LENGTH &&
1722 !memcmp(data, unifying_pairing_answer,
1723 sizeof(unifying_pairing_answer)))
1724 device_index = (data[4] & 0x0F) + 1;
1725 else
1726 return false;
1727 }
1728
1729 /*
1730 * Data is from the HID++ collection, in this case, we forward the
1731 * data to the corresponding child dj device and return 0 to hid-core
1732 * so he data also goes to the hidraw device of the receiver. This
1733 * allows a user space application to implement the full HID++ routing
1734 * via the receiver.
1735 */
1736
1737 if ((device_index < DJ_DEVICE_INDEX_MIN) ||
1738 (device_index > DJ_DEVICE_INDEX_MAX)) {
1739 /*
1740 * Device index is wrong, bail out.
1741 * This driver can ignore safely the receiver notifications,
1742 * so ignore those reports too.
1743 */
1744 hid_err(hdev, "%s: invalid device index:%d\n", __func__,
1745 hidpp_report->device_index);
1746 return false;
1747 }
1748
1749 spin_lock_irqsave(&djrcv_dev->lock, flags);
1750
1751 dj_dev = djrcv_dev->paired_dj_devices[device_index];
1752
1753 /*
1754 * Bolt receivers send explicit unpair notifications as HID++ events;
1755 * queue device removal when we receive one.
1756 */
1757 if (djrcv_dev->type == recvr_type_bolt &&
1758 hidpp_report->report_id == REPORT_ID_HIDPP_SHORT &&
1759 hidpp_report->sub_id == REPORT_TYPE_NOTIF_DEVICE_UNPAIRED) {
1760 struct dj_workitem workitem = {
1761 .device_index = device_index,
1762 .type = WORKITEM_TYPE_UNPAIRED,
1763 };
1764
1765 kfifo_in(&djrcv_dev->notif_fifo, &workitem, sizeof(workitem));
1766 schedule_work(&djrcv_dev->work);
1767 spin_unlock_irqrestore(&djrcv_dev->lock, flags);
1768 return false;
1769 }
1770
1771 /*
1772 * With 27 MHz receivers, we do not get an explicit unpair event,
1773 * remove the old device if the user has paired a *different* device.
1774 */
1775 if (djrcv_dev->type == recvr_type_27mhz && dj_dev &&
1776 hidpp_report->sub_id == REPORT_TYPE_NOTIF_DEVICE_CONNECTED &&
1777 hidpp_report->params[HIDPP_PARAM_PROTO_TYPE] == 0x02 &&
1778 hidpp_report->params[HIDPP_PARAM_27MHZ_DEVID] !=
1779 dj_dev->hdev->product) {
1780 struct dj_workitem workitem = {
1781 .device_index = hidpp_report->device_index,
1782 .type = WORKITEM_TYPE_UNPAIRED,
1783 };
1784 kfifo_in(&djrcv_dev->notif_fifo, &workitem, sizeof(workitem));
1785 /* logi_hidpp_recv_queue_notif will queue the work */
1786 dj_dev = NULL;
1787 }
1788
1789 if (dj_dev) {
1790 logi_dj_recv_forward_report(dj_dev, data, size);
1791 } else {
1792 if (hidpp_report->sub_id == REPORT_TYPE_NOTIF_DEVICE_CONNECTED)
1793 logi_hidpp_recv_queue_notif(hdev, hidpp_report);
1794 else
1795 logi_dj_recv_queue_unknown_work(djrcv_dev);
1796 }
1797
1798 spin_unlock_irqrestore(&djrcv_dev->lock, flags);
1799
1800 return false;
1801 }
1802
logi_dj_raw_event(struct hid_device * hdev,struct hid_report * report,u8 * data,int size)1803 static int logi_dj_raw_event(struct hid_device *hdev,
1804 struct hid_report *report, u8 *data,
1805 int size)
1806 {
1807 struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);
1808 dbg_hid("%s, size:%d\n", __func__, size);
1809
1810 if (!djrcv_dev)
1811 return 0;
1812
1813 if (!hdev->report_enum[HID_INPUT_REPORT].numbered) {
1814
1815 if (djrcv_dev->unnumbered_application == HID_GD_KEYBOARD) {
1816 /*
1817 * For the keyboard, we can reuse the same report by
1818 * using the second byte which is constant in the USB
1819 * HID report descriptor.
1820 */
1821 data[1] = data[0];
1822 data[0] = REPORT_TYPE_KEYBOARD;
1823
1824 logi_dj_recv_forward_input_report(hdev, data, size);
1825
1826 /* restore previous state */
1827 data[0] = data[1];
1828 data[1] = 0;
1829 }
1830 /*
1831 * Mouse-only receivers send unnumbered mouse data. The 27 MHz
1832 * receiver uses 6 byte packets, the nano receiver 8 bytes,
1833 * the lightspeed receiver (Pro X Superlight) 13 bytes.
1834 */
1835 if (djrcv_dev->unnumbered_application == HID_GD_MOUSE &&
1836 size <= 13){
1837 u8 mouse_report[14];
1838
1839 /* Prepend report id */
1840 mouse_report[0] = REPORT_TYPE_MOUSE;
1841 memcpy(mouse_report + 1, data, size);
1842 logi_dj_recv_forward_input_report(hdev, mouse_report,
1843 size + 1);
1844 }
1845
1846 return false;
1847 }
1848
1849 switch (data[0]) {
1850 case REPORT_ID_DJ_SHORT:
1851 if (size != DJREPORT_SHORT_LENGTH) {
1852 hid_err(hdev, "Short DJ report bad size (%d)", size);
1853 return false;
1854 }
1855 return logi_dj_dj_event(hdev, report, data, size);
1856 case REPORT_ID_DJ_LONG:
1857 if (size != DJREPORT_LONG_LENGTH) {
1858 hid_err(hdev, "Long DJ report bad size (%d)", size);
1859 return false;
1860 }
1861 return logi_dj_dj_event(hdev, report, data, size);
1862 case REPORT_ID_HIDPP_SHORT:
1863 if (size != HIDPP_REPORT_SHORT_LENGTH) {
1864 hid_err(hdev, "Short HID++ report bad size (%d)", size);
1865 return false;
1866 }
1867 return logi_dj_hidpp_event(hdev, report, data, size);
1868 case REPORT_ID_HIDPP_LONG:
1869 if (size != HIDPP_REPORT_LONG_LENGTH) {
1870 hid_err(hdev, "Long HID++ report bad size (%d)", size);
1871 return false;
1872 }
1873 return logi_dj_hidpp_event(hdev, report, data, size);
1874 }
1875
1876 logi_dj_recv_forward_input_report(hdev, data, size);
1877
1878 return false;
1879 }
1880
logi_dj_probe(struct hid_device * hdev,const struct hid_device_id * id)1881 static int logi_dj_probe(struct hid_device *hdev,
1882 const struct hid_device_id *id)
1883 {
1884 struct hid_report_enum *input_report_enum;
1885 struct hid_report_enum *output_report_enum;
1886 struct hid_report *rep;
1887 struct dj_receiver_dev *djrcv_dev;
1888 struct usb_interface *intf;
1889 unsigned int no_dj_interfaces = 0;
1890 bool has_hidpp = false;
1891 unsigned long flags;
1892 int retval;
1893
1894 /*
1895 * Call to usbhid to fetch the HID descriptors of the current
1896 * interface subsequently call to the hid/hid-core to parse the
1897 * fetched descriptors.
1898 */
1899 retval = hid_parse(hdev);
1900 if (retval) {
1901 hid_err(hdev, "%s: parse failed\n", __func__);
1902 return retval;
1903 }
1904
1905 /*
1906 * Some KVMs add an extra interface for e.g. mouse emulation. If we
1907 * treat these as logitech-dj interfaces then this causes input events
1908 * reported through this extra interface to not be reported correctly.
1909 * To avoid this, we treat these as generic-hid devices.
1910 *
1911 * Bolt receivers only use LOGITECH_DJ_INTERFACE_NUMBER for receiver
1912 * reporting. Treat all other Bolt interfaces as generic-hid devices.
1913 */
1914 switch (id->driver_data) {
1915 case recvr_type_dj: no_dj_interfaces = 3; break;
1916 case recvr_type_hidpp: no_dj_interfaces = 2; break;
1917 case recvr_type_gaming_hidpp: no_dj_interfaces = 3; break;
1918 case recvr_type_gaming_hidpp_ls_1_3: no_dj_interfaces = 3; break;
1919 case recvr_type_mouse_only: no_dj_interfaces = 2; break;
1920 case recvr_type_27mhz: no_dj_interfaces = 2; break;
1921 case recvr_type_bluetooth: no_dj_interfaces = 2; break;
1922 case recvr_type_dinovo: no_dj_interfaces = 2; break;
1923 }
1924 if (hid_is_usb(hdev)) {
1925 intf = to_usb_interface(hdev->dev.parent);
1926 if (intf) {
1927 bool generic_hid_interface;
1928
1929 if (id->driver_data == recvr_type_bolt)
1930 generic_hid_interface =
1931 intf->altsetting->desc.bInterfaceNumber !=
1932 LOGITECH_DJ_INTERFACE_NUMBER;
1933 else
1934 generic_hid_interface =
1935 intf->altsetting->desc.bInterfaceNumber >= no_dj_interfaces;
1936 if (generic_hid_interface) {
1937 hdev->quirks |= HID_QUIRK_INPUT_PER_APP;
1938 return hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1939 }
1940 }
1941 }
1942
1943 output_report_enum = &hdev->report_enum[HID_OUTPUT_REPORT];
1944 rep = output_report_enum->report_id_hash[REPORT_ID_DJ_SHORT];
1945
1946 if (rep && rep->maxfield < 1) {
1947 hid_err(hdev, "Expected size of DJ short report is %d, but got 0",
1948 DJREPORT_SHORT_LENGTH - 1);
1949 return -EINVAL;
1950 }
1951
1952 if (rep && rep->field[0]->report_count != DJREPORT_SHORT_LENGTH - 1) {
1953 hid_err(hdev, "Expected size of DJ short report is %d, but got %d",
1954 DJREPORT_SHORT_LENGTH - 1, rep->field[0]->report_count);
1955 return -EINVAL;
1956 }
1957
1958 input_report_enum = &hdev->report_enum[HID_INPUT_REPORT];
1959
1960 /* no input reports, bail out */
1961 if (list_empty(&input_report_enum->report_list))
1962 return -ENODEV;
1963
1964 /*
1965 * Check for the HID++ application.
1966 * Note: we should theoretically check for HID++ and DJ
1967 * collections, but this will do.
1968 */
1969 list_for_each_entry(rep, &input_report_enum->report_list, list) {
1970 if (rep->application == 0xff000001)
1971 has_hidpp = true;
1972 }
1973
1974 /*
1975 * Ignore interfaces without DJ/HID++ collection, they will not carry
1976 * any data, dont create any hid_device for them.
1977 */
1978 if (!has_hidpp && id->driver_data == recvr_type_dj)
1979 return -ENODEV;
1980
1981 /* get the current application attached to the node */
1982 rep = list_first_entry(&input_report_enum->report_list, struct hid_report, list);
1983 djrcv_dev = dj_get_receiver_dev(hdev, id->driver_data,
1984 rep->application, has_hidpp);
1985 if (!djrcv_dev) {
1986 hid_err(hdev, "%s: dj_get_receiver_dev failed\n", __func__);
1987 return -ENOMEM;
1988 }
1989
1990 if (!input_report_enum->numbered)
1991 djrcv_dev->unnumbered_application = rep->application;
1992
1993 /* Starts the usb device and connects to upper interfaces hiddev and
1994 * hidraw */
1995 retval = hid_hw_start(hdev, HID_CONNECT_HIDRAW|HID_CONNECT_HIDDEV);
1996 if (retval) {
1997 hid_err(hdev, "%s: hid_hw_start returned error\n", __func__);
1998 goto hid_hw_start_fail;
1999 }
2000
2001 if (has_hidpp) {
2002 /*
2003 * This can fail with a KVM. Ignore errors to let the probe
2004 * succeed, logi_dj_recv_queue_unknown_work will retry later.
2005 */
2006 logi_dj_recv_switch_to_dj_mode(djrcv_dev, 0);
2007 }
2008
2009 /* This is enabling the polling urb on the IN endpoint */
2010 retval = hid_hw_open(hdev);
2011 if (retval < 0) {
2012 hid_err(hdev, "%s: hid_hw_open returned error:%d\n",
2013 __func__, retval);
2014 goto llopen_failed;
2015 }
2016
2017 /* Allow incoming packets to arrive: */
2018 hid_device_io_start(hdev);
2019
2020 if (has_hidpp) {
2021 spin_lock_irqsave(&djrcv_dev->lock, flags);
2022 djrcv_dev->ready = true;
2023 spin_unlock_irqrestore(&djrcv_dev->lock, flags);
2024 /* This too can fail with a KVM, ignore errors. */
2025 logi_dj_recv_query_paired_devices(djrcv_dev);
2026 }
2027
2028 return 0;
2029
2030 llopen_failed:
2031 hid_hw_stop(hdev);
2032
2033 hid_hw_start_fail:
2034 dj_put_receiver_dev(hdev);
2035 return retval;
2036 }
2037
logi_dj_reset_resume(struct hid_device * hdev)2038 static int logi_dj_reset_resume(struct hid_device *hdev)
2039 {
2040 struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);
2041
2042 if (!djrcv_dev || djrcv_dev->hidpp != hdev)
2043 return 0;
2044
2045 logi_dj_recv_switch_to_dj_mode(djrcv_dev, 0);
2046 return 0;
2047 }
2048
logi_dj_remove(struct hid_device * hdev)2049 static void logi_dj_remove(struct hid_device *hdev)
2050 {
2051 struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);
2052 struct dj_device *dj_dev;
2053 unsigned long flags;
2054 int i;
2055
2056 dbg_hid("%s\n", __func__);
2057
2058 if (!djrcv_dev)
2059 return hid_hw_stop(hdev);
2060
2061 /*
2062 * This ensures that if the work gets requeued from another
2063 * interface of the same receiver it will be a no-op.
2064 */
2065 spin_lock_irqsave(&djrcv_dev->lock, flags);
2066 djrcv_dev->ready = false;
2067 spin_unlock_irqrestore(&djrcv_dev->lock, flags);
2068
2069 cancel_work_sync(&djrcv_dev->work);
2070
2071 hid_hw_close(hdev);
2072 hid_hw_stop(hdev);
2073
2074 /*
2075 * For proper operation we need access to all interfaces, so we destroy
2076 * the paired devices when we're unbound from any interface.
2077 *
2078 * Note we may still be bound to other interfaces, sharing the same
2079 * djrcv_dev, so we need locking here.
2080 */
2081 for (i = 0; i < (DJ_MAX_PAIRED_DEVICES + DJ_DEVICE_INDEX_MIN); i++) {
2082 spin_lock_irqsave(&djrcv_dev->lock, flags);
2083 dj_dev = djrcv_dev->paired_dj_devices[i];
2084 djrcv_dev->paired_dj_devices[i] = NULL;
2085 spin_unlock_irqrestore(&djrcv_dev->lock, flags);
2086 if (dj_dev != NULL) {
2087 hid_destroy_device(dj_dev->hdev);
2088 kfree(dj_dev);
2089 }
2090 }
2091
2092 dj_put_receiver_dev(hdev);
2093 }
2094
2095 static const struct hid_device_id logi_dj_receivers[] = {
2096 { /* Logitech unifying receiver (0xc52b) */
2097 HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
2098 USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER),
2099 .driver_data = recvr_type_dj},
2100 { /* Logitech unifying receiver (0xc532) */
2101 HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
2102 USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER_2),
2103 .driver_data = recvr_type_dj},
2104
2105 { /* Logitech Nano mouse only receiver (0xc52f) */
2106 HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
2107 USB_DEVICE_ID_LOGITECH_NANO_RECEIVER),
2108 .driver_data = recvr_type_mouse_only},
2109 { /* Logitech Nano (non DJ) receiver (0xc534) */
2110 HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
2111 USB_DEVICE_ID_LOGITECH_NANO_RECEIVER_2),
2112 .driver_data = recvr_type_hidpp},
2113
2114 { /* Logitech G700(s) receiver (0xc531) */
2115 HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
2116 USB_DEVICE_ID_LOGITECH_G700_RECEIVER),
2117 .driver_data = recvr_type_gaming_hidpp},
2118 { /* Logitech G602 receiver (0xc537) */
2119 HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
2120 0xc537),
2121 .driver_data = recvr_type_gaming_hidpp},
2122 { /* Logitech lightspeed receiver (0xc539) */
2123 HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
2124 USB_DEVICE_ID_LOGITECH_NANO_RECEIVER_LIGHTSPEED_1),
2125 .driver_data = recvr_type_gaming_hidpp},
2126 { /* Logitech powerplay receiver (0xc53a) */
2127 HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
2128 USB_DEVICE_ID_LOGITECH_NANO_RECEIVER_POWERPLAY),
2129 .driver_data = recvr_type_gaming_hidpp},
2130 { /* Logitech lightspeed receiver (0xc53f) */
2131 HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
2132 USB_DEVICE_ID_LOGITECH_NANO_RECEIVER_LIGHTSPEED_1_1),
2133 .driver_data = recvr_type_gaming_hidpp},
2134 { /* Logitech lightspeed receiver (0xc543) */
2135 HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
2136 USB_DEVICE_ID_LOGITECH_NANO_RECEIVER_LIGHTSPEED_1_2),
2137 .driver_data = recvr_type_gaming_hidpp},
2138 { /* Logitech lightspeed receiver (0xc547) */
2139 HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
2140 USB_DEVICE_ID_LOGITECH_NANO_RECEIVER_LIGHTSPEED_1_3),
2141 .driver_data = recvr_type_gaming_hidpp_ls_1_3},
2142 { /* Logitech Bolt receiver (0xc548) */
2143 HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
2144 USB_DEVICE_ID_LOGITECH_BOLT_RECEIVER),
2145 .driver_data = recvr_type_bolt},
2146 { /* Logitech lightspeed receiver (0xc54d) */
2147 HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
2148 USB_DEVICE_ID_LOGITECH_NANO_RECEIVER_LIGHTSPEED_1_4),
2149 .driver_data = recvr_type_gaming_hidpp_ls_1_3},
2150 { /* Logitech lightspeed receiver (0xc545) */
2151 HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
2152 USB_DEVICE_ID_LOGITECH_NANO_RECEIVER_LIGHTSPEED_1_5),
2153 .driver_data = recvr_type_gaming_hidpp_ls_1_3},
2154
2155 { /* Logitech 27 MHz HID++ 1.0 receiver (0xc513) */
2156 HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER),
2157 .driver_data = recvr_type_27mhz},
2158 { /* Logitech 27 MHz HID++ 1.0 receiver (0xc517) */
2159 HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
2160 USB_DEVICE_ID_S510_RECEIVER_2),
2161 .driver_data = recvr_type_27mhz},
2162 { /* Logitech 27 MHz HID++ 1.0 mouse-only receiver (0xc51b) */
2163 HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
2164 USB_DEVICE_ID_LOGITECH_27MHZ_MOUSE_RECEIVER),
2165 .driver_data = recvr_type_27mhz},
2166
2167 { /* Logitech MX5000 HID++ / bluetooth receiver keyboard intf. (0xc70e) */
2168 HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
2169 USB_DEVICE_ID_MX5000_RECEIVER_KBD_DEV),
2170 .driver_data = recvr_type_bluetooth},
2171 { /* Logitech MX5000 HID++ / bluetooth receiver mouse intf. (0xc70a) */
2172 HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
2173 USB_DEVICE_ID_MX5000_RECEIVER_MOUSE_DEV),
2174 .driver_data = recvr_type_bluetooth},
2175 { /* Logitech MX5500 HID++ / bluetooth receiver keyboard intf. (0xc71b) */
2176 HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
2177 USB_DEVICE_ID_MX5500_RECEIVER_KBD_DEV),
2178 .driver_data = recvr_type_bluetooth},
2179 { /* Logitech MX5500 HID++ / bluetooth receiver mouse intf. (0xc71c) */
2180 HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
2181 USB_DEVICE_ID_MX5500_RECEIVER_MOUSE_DEV),
2182 .driver_data = recvr_type_bluetooth},
2183
2184 { /* Logitech Dinovo Edge HID++ / bluetooth receiver keyboard intf. (0xc713) */
2185 HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
2186 USB_DEVICE_ID_DINOVO_EDGE_RECEIVER_KBD_DEV),
2187 .driver_data = recvr_type_dinovo},
2188 { /* Logitech Dinovo Edge HID++ / bluetooth receiver mouse intf. (0xc714) */
2189 HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
2190 USB_DEVICE_ID_DINOVO_EDGE_RECEIVER_MOUSE_DEV),
2191 .driver_data = recvr_type_dinovo},
2192 { /* Logitech DiNovo Mini HID++ / bluetooth receiver mouse intf. (0xc71e) */
2193 HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
2194 USB_DEVICE_ID_DINOVO_MINI_RECEIVER_KBD_DEV),
2195 .driver_data = recvr_type_dinovo},
2196 { /* Logitech DiNovo Mini HID++ / bluetooth receiver keyboard intf. (0xc71f) */
2197 HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
2198 USB_DEVICE_ID_DINOVO_MINI_RECEIVER_MOUSE_DEV),
2199 .driver_data = recvr_type_dinovo},
2200 {}
2201 };
2202
2203 MODULE_DEVICE_TABLE(hid, logi_dj_receivers);
2204
2205 static struct hid_driver logi_djreceiver_driver = {
2206 .name = "logitech-djreceiver",
2207 .id_table = logi_dj_receivers,
2208 .probe = logi_dj_probe,
2209 .remove = logi_dj_remove,
2210 .raw_event = logi_dj_raw_event,
2211 .reset_resume = pm_ptr(logi_dj_reset_resume),
2212 };
2213
2214 module_hid_driver(logi_djreceiver_driver);
2215
2216 MODULE_DESCRIPTION("HID driver for Logitech receivers");
2217 MODULE_LICENSE("GPL");
2218 MODULE_AUTHOR("Logitech");
2219 MODULE_AUTHOR("Nestor Lopez Casado");
2220 MODULE_AUTHOR("nlopezcasad@logitech.com");
2221