Commit | Line | Data |
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534a7b8e NLC |
1 | /* |
2 | * HID driver for Logitech Unifying receivers | |
3 | * | |
4 | * Copyright (c) 2011 Logitech | |
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 version 2 as | |
10 | * published by the Free Software Foundation. | |
11 | ||
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
21 | * | |
22 | */ | |
23 | ||
24 | ||
25 | #include <linux/device.h> | |
26 | #include <linux/hid.h> | |
27 | #include <linux/module.h> | |
28 | #include <linux/usb.h> | |
8cb3746a | 29 | #include <linux/kfifo.h> |
44d27f7d | 30 | #include <asm/unaligned.h> |
534a7b8e | 31 | #include "hid-ids.h" |
8cb3746a BT |
32 | |
33 | #define DJ_MAX_PAIRED_DEVICES 6 | |
34 | #define DJ_MAX_NUMBER_NOTIFICATIONS 8 | |
35 | #define DJ_RECEIVER_INDEX 0 | |
36 | #define DJ_DEVICE_INDEX_MIN 1 | |
37 | #define DJ_DEVICE_INDEX_MAX 6 | |
38 | ||
39 | #define DJREPORT_SHORT_LENGTH 15 | |
40 | #define DJREPORT_LONG_LENGTH 32 | |
41 | ||
42 | #define REPORT_ID_DJ_SHORT 0x20 | |
43 | #define REPORT_ID_DJ_LONG 0x21 | |
44 | ||
925f0f3e BT |
45 | #define REPORT_ID_HIDPP_SHORT 0x10 |
46 | #define REPORT_ID_HIDPP_LONG 0x11 | |
47 | ||
48 | #define HIDPP_REPORT_SHORT_LENGTH 7 | |
49 | #define HIDPP_REPORT_LONG_LENGTH 20 | |
50 | ||
51 | #define HIDPP_RECEIVER_INDEX 0xff | |
52 | ||
53 | #define REPORT_TYPE_RFREPORT_FIRST 0x01 | |
8cb3746a BT |
54 | #define REPORT_TYPE_RFREPORT_LAST 0x1F |
55 | ||
56 | /* Command Switch to DJ mode */ | |
57 | #define REPORT_TYPE_CMD_SWITCH 0x80 | |
58 | #define CMD_SWITCH_PARAM_DEVBITFIELD 0x00 | |
59 | #define CMD_SWITCH_PARAM_TIMEOUT_SECONDS 0x01 | |
60 | #define TIMEOUT_NO_KEEPALIVE 0x00 | |
61 | ||
62 | /* Command to Get the list of Paired devices */ | |
63 | #define REPORT_TYPE_CMD_GET_PAIRED_DEVICES 0x81 | |
64 | ||
65 | /* Device Paired Notification */ | |
66 | #define REPORT_TYPE_NOTIF_DEVICE_PAIRED 0x41 | |
67 | #define SPFUNCTION_MORE_NOTIF_EXPECTED 0x01 | |
68 | #define SPFUNCTION_DEVICE_LIST_EMPTY 0x02 | |
69 | #define DEVICE_PAIRED_PARAM_SPFUNCTION 0x00 | |
70 | #define DEVICE_PAIRED_PARAM_EQUAD_ID_LSB 0x01 | |
71 | #define DEVICE_PAIRED_PARAM_EQUAD_ID_MSB 0x02 | |
72 | #define DEVICE_PAIRED_RF_REPORT_TYPE 0x03 | |
73 | ||
74 | /* Device Un-Paired Notification */ | |
75 | #define REPORT_TYPE_NOTIF_DEVICE_UNPAIRED 0x40 | |
76 | ||
77 | ||
78 | /* Connection Status Notification */ | |
79 | #define REPORT_TYPE_NOTIF_CONNECTION_STATUS 0x42 | |
80 | #define CONNECTION_STATUS_PARAM_STATUS 0x00 | |
81 | #define STATUS_LINKLOSS 0x01 | |
82 | ||
83 | /* Error Notification */ | |
84 | #define REPORT_TYPE_NOTIF_ERROR 0x7F | |
85 | #define NOTIF_ERROR_PARAM_ETYPE 0x00 | |
86 | #define ETYPE_KEEPALIVE_TIMEOUT 0x01 | |
87 | ||
88 | /* supported DJ HID && RF report types */ | |
89 | #define REPORT_TYPE_KEYBOARD 0x01 | |
90 | #define REPORT_TYPE_MOUSE 0x02 | |
91 | #define REPORT_TYPE_CONSUMER_CONTROL 0x03 | |
92 | #define REPORT_TYPE_SYSTEM_CONTROL 0x04 | |
93 | #define REPORT_TYPE_MEDIA_CENTER 0x08 | |
94 | #define REPORT_TYPE_LEDS 0x0E | |
95 | ||
96 | /* RF Report types bitfield */ | |
97 | #define STD_KEYBOARD 0x00000002 | |
98 | #define STD_MOUSE 0x00000004 | |
99 | #define MULTIMEDIA 0x00000008 | |
100 | #define POWER_KEYS 0x00000010 | |
101 | #define MEDIA_CENTER 0x00000100 | |
102 | #define KBD_LEDS 0x00004000 | |
103 | ||
104 | struct dj_report { | |
105 | u8 report_id; | |
106 | u8 device_index; | |
107 | u8 report_type; | |
108 | u8 report_params[DJREPORT_SHORT_LENGTH - 3]; | |
109 | }; | |
110 | ||
111 | struct dj_receiver_dev { | |
112 | struct hid_device *hdev; | |
113 | struct dj_device *paired_dj_devices[DJ_MAX_PAIRED_DEVICES + | |
114 | DJ_DEVICE_INDEX_MIN]; | |
115 | struct work_struct work; | |
116 | struct kfifo notif_fifo; | |
117 | spinlock_t lock; | |
118 | bool querying_devices; | |
119 | }; | |
120 | ||
121 | struct dj_device { | |
122 | struct hid_device *hdev; | |
123 | struct dj_receiver_dev *dj_receiver_dev; | |
124 | u32 reports_supported; | |
125 | u8 device_index; | |
126 | }; | |
534a7b8e NLC |
127 | |
128 | /* Keyboard descriptor (1) */ | |
129 | static const char kbd_descriptor[] = { | |
130 | 0x05, 0x01, /* USAGE_PAGE (generic Desktop) */ | |
131 | 0x09, 0x06, /* USAGE (Keyboard) */ | |
132 | 0xA1, 0x01, /* COLLECTION (Application) */ | |
133 | 0x85, 0x01, /* REPORT_ID (1) */ | |
134 | 0x95, 0x08, /* REPORT_COUNT (8) */ | |
135 | 0x75, 0x01, /* REPORT_SIZE (1) */ | |
136 | 0x15, 0x00, /* LOGICAL_MINIMUM (0) */ | |
137 | 0x25, 0x01, /* LOGICAL_MAXIMUM (1) */ | |
138 | 0x05, 0x07, /* USAGE_PAGE (Keyboard) */ | |
139 | 0x19, 0xE0, /* USAGE_MINIMUM (Left Control) */ | |
140 | 0x29, 0xE7, /* USAGE_MAXIMUM (Right GUI) */ | |
141 | 0x81, 0x02, /* INPUT (Data,Var,Abs) */ | |
534a7b8e NLC |
142 | 0x95, 0x06, /* REPORT_COUNT (6) */ |
143 | 0x75, 0x08, /* REPORT_SIZE (8) */ | |
144 | 0x15, 0x00, /* LOGICAL_MINIMUM (0) */ | |
145 | 0x26, 0xFF, 0x00, /* LOGICAL_MAXIMUM (255) */ | |
146 | 0x05, 0x07, /* USAGE_PAGE (Keyboard) */ | |
147 | 0x19, 0x00, /* USAGE_MINIMUM (no event) */ | |
148 | 0x2A, 0xFF, 0x00, /* USAGE_MAXIMUM (reserved) */ | |
149 | 0x81, 0x00, /* INPUT (Data,Ary,Abs) */ | |
0e40d356 BT |
150 | 0x85, 0x0e, /* REPORT_ID (14) */ |
151 | 0x05, 0x08, /* USAGE PAGE (LED page) */ | |
152 | 0x95, 0x05, /* REPORT COUNT (5) */ | |
153 | 0x75, 0x01, /* REPORT SIZE (1) */ | |
154 | 0x15, 0x00, /* LOGICAL_MINIMUM (0) */ | |
155 | 0x25, 0x01, /* LOGICAL_MAXIMUM (1) */ | |
156 | 0x19, 0x01, /* USAGE MINIMUM (1) */ | |
157 | 0x29, 0x05, /* USAGE MAXIMUM (5) */ | |
158 | 0x91, 0x02, /* OUTPUT (Data, Variable, Absolute) */ | |
159 | 0x95, 0x01, /* REPORT COUNT (1) */ | |
160 | 0x75, 0x03, /* REPORT SIZE (3) */ | |
161 | 0x91, 0x01, /* OUTPUT (Constant) */ | |
534a7b8e NLC |
162 | 0xC0 |
163 | }; | |
164 | ||
165 | /* Mouse descriptor (2) */ | |
166 | static const char mse_descriptor[] = { | |
167 | 0x05, 0x01, /* USAGE_PAGE (Generic Desktop) */ | |
168 | 0x09, 0x02, /* USAGE (Mouse) */ | |
169 | 0xA1, 0x01, /* COLLECTION (Application) */ | |
170 | 0x85, 0x02, /* REPORT_ID = 2 */ | |
171 | 0x09, 0x01, /* USAGE (pointer) */ | |
172 | 0xA1, 0x00, /* COLLECTION (physical) */ | |
173 | 0x05, 0x09, /* USAGE_PAGE (buttons) */ | |
174 | 0x19, 0x01, /* USAGE_MIN (1) */ | |
175 | 0x29, 0x10, /* USAGE_MAX (16) */ | |
176 | 0x15, 0x00, /* LOGICAL_MIN (0) */ | |
177 | 0x25, 0x01, /* LOGICAL_MAX (1) */ | |
178 | 0x95, 0x10, /* REPORT_COUNT (16) */ | |
179 | 0x75, 0x01, /* REPORT_SIZE (1) */ | |
180 | 0x81, 0x02, /* INPUT (data var abs) */ | |
181 | 0x05, 0x01, /* USAGE_PAGE (generic desktop) */ | |
182 | 0x16, 0x01, 0xF8, /* LOGICAL_MIN (-2047) */ | |
183 | 0x26, 0xFF, 0x07, /* LOGICAL_MAX (2047) */ | |
184 | 0x75, 0x0C, /* REPORT_SIZE (12) */ | |
185 | 0x95, 0x02, /* REPORT_COUNT (2) */ | |
186 | 0x09, 0x30, /* USAGE (X) */ | |
187 | 0x09, 0x31, /* USAGE (Y) */ | |
188 | 0x81, 0x06, /* INPUT */ | |
189 | 0x15, 0x81, /* LOGICAL_MIN (-127) */ | |
190 | 0x25, 0x7F, /* LOGICAL_MAX (127) */ | |
191 | 0x75, 0x08, /* REPORT_SIZE (8) */ | |
192 | 0x95, 0x01, /* REPORT_COUNT (1) */ | |
193 | 0x09, 0x38, /* USAGE (wheel) */ | |
194 | 0x81, 0x06, /* INPUT */ | |
195 | 0x05, 0x0C, /* USAGE_PAGE(consumer) */ | |
196 | 0x0A, 0x38, 0x02, /* USAGE(AC Pan) */ | |
197 | 0x95, 0x01, /* REPORT_COUNT (1) */ | |
198 | 0x81, 0x06, /* INPUT */ | |
199 | 0xC0, /* END_COLLECTION */ | |
200 | 0xC0, /* END_COLLECTION */ | |
201 | }; | |
202 | ||
203 | /* Consumer Control descriptor (3) */ | |
204 | static const char consumer_descriptor[] = { | |
205 | 0x05, 0x0C, /* USAGE_PAGE (Consumer Devices) */ | |
206 | 0x09, 0x01, /* USAGE (Consumer Control) */ | |
207 | 0xA1, 0x01, /* COLLECTION (Application) */ | |
208 | 0x85, 0x03, /* REPORT_ID = 3 */ | |
209 | 0x75, 0x10, /* REPORT_SIZE (16) */ | |
210 | 0x95, 0x02, /* REPORT_COUNT (2) */ | |
211 | 0x15, 0x01, /* LOGICAL_MIN (1) */ | |
212 | 0x26, 0x8C, 0x02, /* LOGICAL_MAX (652) */ | |
213 | 0x19, 0x01, /* USAGE_MIN (1) */ | |
214 | 0x2A, 0x8C, 0x02, /* USAGE_MAX (652) */ | |
215 | 0x81, 0x00, /* INPUT (Data Ary Abs) */ | |
216 | 0xC0, /* END_COLLECTION */ | |
217 | }; /* */ | |
218 | ||
219 | /* System control descriptor (4) */ | |
220 | static const char syscontrol_descriptor[] = { | |
221 | 0x05, 0x01, /* USAGE_PAGE (Generic Desktop) */ | |
222 | 0x09, 0x80, /* USAGE (System Control) */ | |
223 | 0xA1, 0x01, /* COLLECTION (Application) */ | |
224 | 0x85, 0x04, /* REPORT_ID = 4 */ | |
225 | 0x75, 0x02, /* REPORT_SIZE (2) */ | |
226 | 0x95, 0x01, /* REPORT_COUNT (1) */ | |
227 | 0x15, 0x01, /* LOGICAL_MIN (1) */ | |
228 | 0x25, 0x03, /* LOGICAL_MAX (3) */ | |
229 | 0x09, 0x82, /* USAGE (System Sleep) */ | |
230 | 0x09, 0x81, /* USAGE (System Power Down) */ | |
231 | 0x09, 0x83, /* USAGE (System Wake Up) */ | |
232 | 0x81, 0x60, /* INPUT (Data Ary Abs NPrf Null) */ | |
233 | 0x75, 0x06, /* REPORT_SIZE (6) */ | |
234 | 0x81, 0x03, /* INPUT (Cnst Var Abs) */ | |
235 | 0xC0, /* END_COLLECTION */ | |
236 | }; | |
237 | ||
238 | /* Media descriptor (8) */ | |
239 | static const char media_descriptor[] = { | |
240 | 0x06, 0xbc, 0xff, /* Usage Page 0xffbc */ | |
241 | 0x09, 0x88, /* Usage 0x0088 */ | |
242 | 0xa1, 0x01, /* BeginCollection */ | |
243 | 0x85, 0x08, /* Report ID 8 */ | |
244 | 0x19, 0x01, /* Usage Min 0x0001 */ | |
245 | 0x29, 0xff, /* Usage Max 0x00ff */ | |
246 | 0x15, 0x01, /* Logical Min 1 */ | |
247 | 0x26, 0xff, 0x00, /* Logical Max 255 */ | |
248 | 0x75, 0x08, /* Report Size 8 */ | |
249 | 0x95, 0x01, /* Report Count 1 */ | |
250 | 0x81, 0x00, /* Input */ | |
251 | 0xc0, /* EndCollection */ | |
252 | }; /* */ | |
253 | ||
925f0f3e BT |
254 | /* HIDPP descriptor */ |
255 | static const char hidpp_descriptor[] = { | |
256 | 0x06, 0x00, 0xff, /* Usage Page (Vendor Defined Page 1) */ | |
257 | 0x09, 0x01, /* Usage (Vendor Usage 1) */ | |
258 | 0xa1, 0x01, /* Collection (Application) */ | |
259 | 0x85, 0x10, /* Report ID (16) */ | |
260 | 0x75, 0x08, /* Report Size (8) */ | |
261 | 0x95, 0x06, /* Report Count (6) */ | |
262 | 0x15, 0x00, /* Logical Minimum (0) */ | |
263 | 0x26, 0xff, 0x00, /* Logical Maximum (255) */ | |
264 | 0x09, 0x01, /* Usage (Vendor Usage 1) */ | |
265 | 0x81, 0x00, /* Input (Data,Arr,Abs) */ | |
266 | 0x09, 0x01, /* Usage (Vendor Usage 1) */ | |
267 | 0x91, 0x00, /* Output (Data,Arr,Abs) */ | |
268 | 0xc0, /* End Collection */ | |
269 | 0x06, 0x00, 0xff, /* Usage Page (Vendor Defined Page 1) */ | |
270 | 0x09, 0x02, /* Usage (Vendor Usage 2) */ | |
271 | 0xa1, 0x01, /* Collection (Application) */ | |
272 | 0x85, 0x11, /* Report ID (17) */ | |
273 | 0x75, 0x08, /* Report Size (8) */ | |
274 | 0x95, 0x13, /* Report Count (19) */ | |
275 | 0x15, 0x00, /* Logical Minimum (0) */ | |
276 | 0x26, 0xff, 0x00, /* Logical Maximum (255) */ | |
277 | 0x09, 0x02, /* Usage (Vendor Usage 2) */ | |
278 | 0x81, 0x00, /* Input (Data,Arr,Abs) */ | |
279 | 0x09, 0x02, /* Usage (Vendor Usage 2) */ | |
280 | 0x91, 0x00, /* Output (Data,Arr,Abs) */ | |
281 | 0xc0, /* End Collection */ | |
282 | 0x06, 0x00, 0xff, /* Usage Page (Vendor Defined Page 1) */ | |
283 | 0x09, 0x04, /* Usage (Vendor Usage 0x04) */ | |
284 | 0xa1, 0x01, /* Collection (Application) */ | |
285 | 0x85, 0x20, /* Report ID (32) */ | |
286 | 0x75, 0x08, /* Report Size (8) */ | |
287 | 0x95, 0x0e, /* Report Count (14) */ | |
288 | 0x15, 0x00, /* Logical Minimum (0) */ | |
289 | 0x26, 0xff, 0x00, /* Logical Maximum (255) */ | |
290 | 0x09, 0x41, /* Usage (Vendor Usage 0x41) */ | |
291 | 0x81, 0x00, /* Input (Data,Arr,Abs) */ | |
292 | 0x09, 0x41, /* Usage (Vendor Usage 0x41) */ | |
293 | 0x91, 0x00, /* Output (Data,Arr,Abs) */ | |
294 | 0x85, 0x21, /* Report ID (33) */ | |
295 | 0x95, 0x1f, /* Report Count (31) */ | |
296 | 0x15, 0x00, /* Logical Minimum (0) */ | |
297 | 0x26, 0xff, 0x00, /* Logical Maximum (255) */ | |
298 | 0x09, 0x42, /* Usage (Vendor Usage 0x42) */ | |
299 | 0x81, 0x00, /* Input (Data,Arr,Abs) */ | |
300 | 0x09, 0x42, /* Usage (Vendor Usage 0x42) */ | |
301 | 0x91, 0x00, /* Output (Data,Arr,Abs) */ | |
302 | 0xc0, /* End Collection */ | |
303 | }; | |
304 | ||
534a7b8e NLC |
305 | /* Maximum size of all defined hid reports in bytes (including report id) */ |
306 | #define MAX_REPORT_SIZE 8 | |
307 | ||
2a039bf5 HR |
308 | /* Make sure all descriptors are present here */ |
309 | #define MAX_RDESC_SIZE \ | |
310 | (sizeof(kbd_descriptor) + \ | |
311 | sizeof(mse_descriptor) + \ | |
312 | sizeof(consumer_descriptor) + \ | |
313 | sizeof(syscontrol_descriptor) + \ | |
925f0f3e BT |
314 | sizeof(media_descriptor) + \ |
315 | sizeof(hidpp_descriptor)) | |
2a039bf5 | 316 | |
534a7b8e NLC |
317 | /* Number of possible hid report types that can be created by this driver. |
318 | * | |
319 | * Right now, RF report types have the same report types (or report id's) | |
320 | * than the hid report created from those RF reports. In the future | |
321 | * this doesnt have to be true. | |
322 | * | |
323 | * For instance, RF report type 0x01 which has a size of 8 bytes, corresponds | |
324 | * to hid report id 0x01, this is standard keyboard. Same thing applies to mice | |
325 | * reports and consumer control, etc. If a new RF report is created, it doesn't | |
326 | * has to have the same report id as its corresponding hid report, so an | |
327 | * translation may have to take place for future report types. | |
328 | */ | |
329 | #define NUMBER_OF_HID_REPORTS 32 | |
330 | static const u8 hid_reportid_size_map[NUMBER_OF_HID_REPORTS] = { | |
331 | [1] = 8, /* Standard keyboard */ | |
332 | [2] = 8, /* Standard mouse */ | |
333 | [3] = 5, /* Consumer control */ | |
334 | [4] = 2, /* System control */ | |
335 | [8] = 2, /* Media Center */ | |
336 | }; | |
337 | ||
338 | ||
339 | #define LOGITECH_DJ_INTERFACE_NUMBER 0x02 | |
340 | ||
534a7b8e NLC |
341 | static struct hid_ll_driver logi_dj_ll_driver; |
342 | ||
c63e0e37 | 343 | static int logi_dj_recv_query_paired_devices(struct dj_receiver_dev *djrcv_dev); |
534a7b8e NLC |
344 | |
345 | static void logi_dj_recv_destroy_djhid_device(struct dj_receiver_dev *djrcv_dev, | |
346 | struct dj_report *dj_report) | |
347 | { | |
348 | /* Called in delayed work context */ | |
349 | struct dj_device *dj_dev; | |
350 | unsigned long flags; | |
351 | ||
352 | spin_lock_irqsave(&djrcv_dev->lock, flags); | |
353 | dj_dev = djrcv_dev->paired_dj_devices[dj_report->device_index]; | |
354 | djrcv_dev->paired_dj_devices[dj_report->device_index] = NULL; | |
355 | spin_unlock_irqrestore(&djrcv_dev->lock, flags); | |
356 | ||
357 | if (dj_dev != NULL) { | |
358 | hid_destroy_device(dj_dev->hdev); | |
359 | kfree(dj_dev); | |
360 | } else { | |
361 | dev_err(&djrcv_dev->hdev->dev, "%s: can't destroy a NULL device\n", | |
362 | __func__); | |
363 | } | |
364 | } | |
365 | ||
366 | static void logi_dj_recv_add_djhid_device(struct dj_receiver_dev *djrcv_dev, | |
367 | struct dj_report *dj_report) | |
368 | { | |
369 | /* Called in delayed work context */ | |
370 | struct hid_device *djrcv_hdev = djrcv_dev->hdev; | |
371 | struct usb_interface *intf = to_usb_interface(djrcv_hdev->dev.parent); | |
372 | struct usb_device *usbdev = interface_to_usbdev(intf); | |
373 | struct hid_device *dj_hiddev; | |
374 | struct dj_device *dj_dev; | |
375 | ||
376 | /* Device index goes from 1 to 6, we need 3 bytes to store the | |
377 | * semicolon, the index, and a null terminator | |
378 | */ | |
379 | unsigned char tmpstr[3]; | |
380 | ||
381 | if (dj_report->report_params[DEVICE_PAIRED_PARAM_SPFUNCTION] & | |
382 | SPFUNCTION_DEVICE_LIST_EMPTY) { | |
383 | dbg_hid("%s: device list is empty\n", __func__); | |
c63e0e37 | 384 | djrcv_dev->querying_devices = false; |
534a7b8e NLC |
385 | return; |
386 | } | |
387 | ||
c63e0e37 NLC |
388 | if (djrcv_dev->paired_dj_devices[dj_report->device_index]) { |
389 | /* The device is already known. No need to reallocate it. */ | |
390 | dbg_hid("%s: device is already known\n", __func__); | |
391 | return; | |
392 | } | |
393 | ||
534a7b8e NLC |
394 | dj_hiddev = hid_allocate_device(); |
395 | if (IS_ERR(dj_hiddev)) { | |
396 | dev_err(&djrcv_hdev->dev, "%s: hid_allocate_device failed\n", | |
397 | __func__); | |
398 | return; | |
399 | } | |
400 | ||
401 | dj_hiddev->ll_driver = &logi_dj_ll_driver; | |
534a7b8e NLC |
402 | |
403 | dj_hiddev->dev.parent = &djrcv_hdev->dev; | |
404 | dj_hiddev->bus = BUS_USB; | |
405 | dj_hiddev->vendor = le16_to_cpu(usbdev->descriptor.idVendor); | |
d610274b BT |
406 | dj_hiddev->product = |
407 | (dj_report->report_params[DEVICE_PAIRED_PARAM_EQUAD_ID_MSB] | |
408 | << 8) | | |
409 | dj_report->report_params[DEVICE_PAIRED_PARAM_EQUAD_ID_LSB]; | |
534a7b8e | 410 | snprintf(dj_hiddev->name, sizeof(dj_hiddev->name), |
d610274b BT |
411 | "Logitech Unifying Device. Wireless PID:%04x", |
412 | dj_hiddev->product); | |
413 | ||
414 | dj_hiddev->group = HID_GROUP_LOGITECH_DJ_DEVICE; | |
534a7b8e NLC |
415 | |
416 | usb_make_path(usbdev, dj_hiddev->phys, sizeof(dj_hiddev->phys)); | |
417 | snprintf(tmpstr, sizeof(tmpstr), ":%d", dj_report->device_index); | |
418 | strlcat(dj_hiddev->phys, tmpstr, sizeof(dj_hiddev->phys)); | |
419 | ||
420 | dj_dev = kzalloc(sizeof(struct dj_device), GFP_KERNEL); | |
421 | ||
422 | if (!dj_dev) { | |
423 | dev_err(&djrcv_hdev->dev, "%s: failed allocating dj_device\n", | |
424 | __func__); | |
425 | goto dj_device_allocate_fail; | |
426 | } | |
427 | ||
44d27f7d JN |
428 | dj_dev->reports_supported = get_unaligned_le32( |
429 | dj_report->report_params + DEVICE_PAIRED_RF_REPORT_TYPE); | |
534a7b8e NLC |
430 | dj_dev->hdev = dj_hiddev; |
431 | dj_dev->dj_receiver_dev = djrcv_dev; | |
432 | dj_dev->device_index = dj_report->device_index; | |
433 | dj_hiddev->driver_data = dj_dev; | |
434 | ||
435 | djrcv_dev->paired_dj_devices[dj_report->device_index] = dj_dev; | |
436 | ||
437 | if (hid_add_device(dj_hiddev)) { | |
438 | dev_err(&djrcv_hdev->dev, "%s: failed adding dj_device\n", | |
439 | __func__); | |
440 | goto hid_add_device_fail; | |
441 | } | |
442 | ||
443 | return; | |
444 | ||
445 | hid_add_device_fail: | |
446 | djrcv_dev->paired_dj_devices[dj_report->device_index] = NULL; | |
447 | kfree(dj_dev); | |
448 | dj_device_allocate_fail: | |
449 | hid_destroy_device(dj_hiddev); | |
450 | } | |
451 | ||
452 | static void delayedwork_callback(struct work_struct *work) | |
453 | { | |
454 | struct dj_receiver_dev *djrcv_dev = | |
455 | container_of(work, struct dj_receiver_dev, work); | |
456 | ||
457 | struct dj_report dj_report; | |
458 | unsigned long flags; | |
459 | int count; | |
c63e0e37 | 460 | int retval; |
534a7b8e NLC |
461 | |
462 | dbg_hid("%s\n", __func__); | |
463 | ||
464 | spin_lock_irqsave(&djrcv_dev->lock, flags); | |
465 | ||
466 | count = kfifo_out(&djrcv_dev->notif_fifo, &dj_report, | |
467 | sizeof(struct dj_report)); | |
468 | ||
469 | if (count != sizeof(struct dj_report)) { | |
470 | dev_err(&djrcv_dev->hdev->dev, "%s: workitem triggered without " | |
471 | "notifications available\n", __func__); | |
472 | spin_unlock_irqrestore(&djrcv_dev->lock, flags); | |
473 | return; | |
474 | } | |
475 | ||
476 | if (!kfifo_is_empty(&djrcv_dev->notif_fifo)) { | |
477 | if (schedule_work(&djrcv_dev->work) == 0) { | |
478 | dbg_hid("%s: did not schedule the work item, was " | |
479 | "already queued\n", __func__); | |
480 | } | |
481 | } | |
482 | ||
483 | spin_unlock_irqrestore(&djrcv_dev->lock, flags); | |
484 | ||
485 | switch (dj_report.report_type) { | |
486 | case REPORT_TYPE_NOTIF_DEVICE_PAIRED: | |
487 | logi_dj_recv_add_djhid_device(djrcv_dev, &dj_report); | |
488 | break; | |
489 | case REPORT_TYPE_NOTIF_DEVICE_UNPAIRED: | |
490 | logi_dj_recv_destroy_djhid_device(djrcv_dev, &dj_report); | |
491 | break; | |
492 | default: | |
c63e0e37 NLC |
493 | /* A normal report (i. e. not belonging to a pair/unpair notification) |
494 | * arriving here, means that the report arrived but we did not have a | |
495 | * paired dj_device associated to the report's device_index, this | |
496 | * means that the original "device paired" notification corresponding | |
497 | * to this dj_device never arrived to this driver. The reason is that | |
498 | * hid-core discards all packets coming from a device while probe() is | |
499 | * executing. */ | |
500 | if (!djrcv_dev->paired_dj_devices[dj_report.device_index]) { | |
501 | /* ok, we don't know the device, just re-ask the | |
502 | * receiver for the list of connected devices. */ | |
503 | retval = logi_dj_recv_query_paired_devices(djrcv_dev); | |
504 | if (!retval) { | |
505 | /* everything went fine, so just leave */ | |
506 | break; | |
507 | } | |
508 | dev_err(&djrcv_dev->hdev->dev, | |
509 | "%s:logi_dj_recv_query_paired_devices " | |
510 | "error:%d\n", __func__, retval); | |
511 | } | |
534a7b8e NLC |
512 | dbg_hid("%s: unexpected report type\n", __func__); |
513 | } | |
514 | } | |
515 | ||
516 | static void logi_dj_recv_queue_notification(struct dj_receiver_dev *djrcv_dev, | |
517 | struct dj_report *dj_report) | |
518 | { | |
519 | /* We are called from atomic context (tasklet && djrcv->lock held) */ | |
520 | ||
521 | kfifo_in(&djrcv_dev->notif_fifo, dj_report, sizeof(struct dj_report)); | |
522 | ||
523 | if (schedule_work(&djrcv_dev->work) == 0) { | |
524 | dbg_hid("%s: did not schedule the work item, was already " | |
525 | "queued\n", __func__); | |
526 | } | |
527 | } | |
528 | ||
529 | static void logi_dj_recv_forward_null_report(struct dj_receiver_dev *djrcv_dev, | |
530 | struct dj_report *dj_report) | |
531 | { | |
532 | /* We are called from atomic context (tasklet && djrcv->lock held) */ | |
533 | unsigned int i; | |
534 | u8 reportbuffer[MAX_REPORT_SIZE]; | |
535 | struct dj_device *djdev; | |
536 | ||
537 | djdev = djrcv_dev->paired_dj_devices[dj_report->device_index]; | |
538 | ||
534a7b8e NLC |
539 | memset(reportbuffer, 0, sizeof(reportbuffer)); |
540 | ||
541 | for (i = 0; i < NUMBER_OF_HID_REPORTS; i++) { | |
542 | if (djdev->reports_supported & (1 << i)) { | |
543 | reportbuffer[0] = i; | |
544 | if (hid_input_report(djdev->hdev, | |
545 | HID_INPUT_REPORT, | |
546 | reportbuffer, | |
547 | hid_reportid_size_map[i], 1)) { | |
548 | dbg_hid("hid_input_report error sending null " | |
549 | "report\n"); | |
550 | } | |
551 | } | |
552 | } | |
553 | } | |
554 | ||
555 | static void logi_dj_recv_forward_report(struct dj_receiver_dev *djrcv_dev, | |
556 | struct dj_report *dj_report) | |
557 | { | |
558 | /* We are called from atomic context (tasklet && djrcv->lock held) */ | |
559 | struct dj_device *dj_device; | |
560 | ||
561 | dj_device = djrcv_dev->paired_dj_devices[dj_report->device_index]; | |
562 | ||
534a7b8e NLC |
563 | if ((dj_report->report_type > ARRAY_SIZE(hid_reportid_size_map) - 1) || |
564 | (hid_reportid_size_map[dj_report->report_type] == 0)) { | |
565 | dbg_hid("invalid report type:%x\n", dj_report->report_type); | |
566 | return; | |
567 | } | |
568 | ||
569 | if (hid_input_report(dj_device->hdev, | |
570 | HID_INPUT_REPORT, &dj_report->report_type, | |
571 | hid_reportid_size_map[dj_report->report_type], 1)) { | |
572 | dbg_hid("hid_input_report error\n"); | |
573 | } | |
574 | } | |
575 | ||
925f0f3e BT |
576 | static void logi_dj_recv_forward_hidpp(struct dj_device *dj_dev, u8 *data, |
577 | int size) | |
578 | { | |
579 | /* We are called from atomic context (tasklet && djrcv->lock held) */ | |
580 | if (hid_input_report(dj_dev->hdev, HID_INPUT_REPORT, data, size, 1)) | |
581 | dbg_hid("hid_input_report error\n"); | |
582 | } | |
534a7b8e NLC |
583 | |
584 | static int logi_dj_recv_send_report(struct dj_receiver_dev *djrcv_dev, | |
585 | struct dj_report *dj_report) | |
586 | { | |
587 | struct hid_device *hdev = djrcv_dev->hdev; | |
dcd9006b BT |
588 | struct hid_report *report; |
589 | struct hid_report_enum *output_report_enum; | |
590 | u8 *data = (u8 *)(&dj_report->device_index); | |
297502ab | 591 | unsigned int i; |
534a7b8e | 592 | |
dcd9006b BT |
593 | output_report_enum = &hdev->report_enum[HID_OUTPUT_REPORT]; |
594 | report = output_report_enum->report_id_hash[REPORT_ID_DJ_SHORT]; | |
595 | ||
596 | if (!report) { | |
597 | dev_err(&hdev->dev, "%s: unable to find dj report\n", __func__); | |
534a7b8e NLC |
598 | return -ENODEV; |
599 | } | |
600 | ||
297502ab | 601 | for (i = 0; i < DJREPORT_SHORT_LENGTH - 1; i++) |
dcd9006b BT |
602 | report->field[0]->value[i] = data[i]; |
603 | ||
83a44ac8 | 604 | hid_hw_request(hdev, report, HID_REQ_SET_REPORT); |
534a7b8e | 605 | |
dcd9006b | 606 | return 0; |
534a7b8e NLC |
607 | } |
608 | ||
609 | static int logi_dj_recv_query_paired_devices(struct dj_receiver_dev *djrcv_dev) | |
610 | { | |
d8dc3494 MD |
611 | struct dj_report *dj_report; |
612 | int retval; | |
534a7b8e | 613 | |
c63e0e37 NLC |
614 | /* no need to protect djrcv_dev->querying_devices */ |
615 | if (djrcv_dev->querying_devices) | |
616 | return 0; | |
617 | ||
8a55ade7 | 618 | dj_report = kzalloc(sizeof(struct dj_report), GFP_KERNEL); |
d8dc3494 MD |
619 | if (!dj_report) |
620 | return -ENOMEM; | |
621 | dj_report->report_id = REPORT_ID_DJ_SHORT; | |
622 | dj_report->device_index = 0xFF; | |
623 | dj_report->report_type = REPORT_TYPE_CMD_GET_PAIRED_DEVICES; | |
624 | retval = logi_dj_recv_send_report(djrcv_dev, dj_report); | |
625 | kfree(dj_report); | |
626 | return retval; | |
534a7b8e NLC |
627 | } |
628 | ||
c63e0e37 | 629 | |
534a7b8e NLC |
630 | static int logi_dj_recv_switch_to_dj_mode(struct dj_receiver_dev *djrcv_dev, |
631 | unsigned timeout) | |
632 | { | |
6a9ddc89 | 633 | struct hid_device *hdev = djrcv_dev->hdev; |
d8dc3494 | 634 | struct dj_report *dj_report; |
6a9ddc89 | 635 | u8 *buf; |
d8dc3494 | 636 | int retval; |
534a7b8e | 637 | |
8a55ade7 | 638 | dj_report = kzalloc(sizeof(struct dj_report), GFP_KERNEL); |
d8dc3494 MD |
639 | if (!dj_report) |
640 | return -ENOMEM; | |
641 | dj_report->report_id = REPORT_ID_DJ_SHORT; | |
642 | dj_report->device_index = 0xFF; | |
643 | dj_report->report_type = REPORT_TYPE_CMD_SWITCH; | |
644 | dj_report->report_params[CMD_SWITCH_PARAM_DEVBITFIELD] = 0x3F; | |
645 | dj_report->report_params[CMD_SWITCH_PARAM_TIMEOUT_SECONDS] = (u8)timeout; | |
646 | retval = logi_dj_recv_send_report(djrcv_dev, dj_report); | |
42c22dbf BT |
647 | |
648 | /* | |
649 | * Ugly sleep to work around a USB 3.0 bug when the receiver is still | |
650 | * processing the "switch-to-dj" command while we send an other command. | |
651 | * 50 msec should gives enough time to the receiver to be ready. | |
652 | */ | |
653 | msleep(50); | |
654 | ||
6a9ddc89 BT |
655 | /* |
656 | * Magical bits to set up hidpp notifications when the dj devices | |
657 | * are connected/disconnected. | |
658 | * | |
659 | * We can reuse dj_report because HIDPP_REPORT_SHORT_LENGTH is smaller | |
660 | * than DJREPORT_SHORT_LENGTH. | |
661 | */ | |
662 | buf = (u8 *)dj_report; | |
663 | ||
664 | memset(buf, 0, HIDPP_REPORT_SHORT_LENGTH); | |
665 | ||
666 | buf[0] = REPORT_ID_HIDPP_SHORT; | |
667 | buf[1] = 0xFF; | |
668 | buf[2] = 0x80; | |
669 | buf[3] = 0x00; | |
670 | buf[4] = 0x00; | |
671 | buf[5] = 0x09; | |
672 | buf[6] = 0x00; | |
673 | ||
674 | hid_hw_raw_request(hdev, REPORT_ID_HIDPP_SHORT, buf, | |
675 | HIDPP_REPORT_SHORT_LENGTH, HID_OUTPUT_REPORT, | |
676 | HID_REQ_SET_REPORT); | |
677 | ||
678 | kfree(dj_report); | |
d8dc3494 | 679 | return retval; |
534a7b8e NLC |
680 | } |
681 | ||
682 | ||
683 | static int logi_dj_ll_open(struct hid_device *hid) | |
684 | { | |
685 | dbg_hid("%s:%s\n", __func__, hid->phys); | |
686 | return 0; | |
687 | ||
688 | } | |
689 | ||
690 | static void logi_dj_ll_close(struct hid_device *hid) | |
691 | { | |
692 | dbg_hid("%s:%s\n", __func__, hid->phys); | |
693 | } | |
694 | ||
33797820 BT |
695 | static u8 unifying_name_query[] = {0x10, 0xff, 0x83, 0xb5, 0x40, 0x00, 0x00}; |
696 | static u8 unifying_name_answer[] = {0x11, 0xff, 0x83, 0xb5}; | |
697 | ||
bd27e202 BT |
698 | static int logi_dj_ll_raw_request(struct hid_device *hid, |
699 | unsigned char reportnum, __u8 *buf, | |
700 | size_t count, unsigned char report_type, | |
701 | int reqtype) | |
534a7b8e | 702 | { |
0e40d356 BT |
703 | struct dj_device *djdev = hid->driver_data; |
704 | struct dj_receiver_dev *djrcv_dev = djdev->dj_receiver_dev; | |
705 | u8 *out_buf; | |
706 | int ret; | |
534a7b8e | 707 | |
925f0f3e BT |
708 | if ((buf[0] == REPORT_ID_HIDPP_SHORT) || |
709 | (buf[0] == REPORT_ID_HIDPP_LONG)) { | |
710 | if (count < 2) | |
711 | return -EINVAL; | |
712 | ||
33797820 BT |
713 | /* special case where we should not overwrite |
714 | * the device_index */ | |
715 | if (count == 7 && !memcmp(buf, unifying_name_query, | |
716 | sizeof(unifying_name_query))) | |
717 | buf[4] |= djdev->device_index - 1; | |
718 | else | |
719 | buf[1] = djdev->device_index; | |
925f0f3e BT |
720 | return hid_hw_raw_request(djrcv_dev->hdev, reportnum, buf, |
721 | count, report_type, reqtype); | |
722 | } | |
723 | ||
0e40d356 BT |
724 | if (buf[0] != REPORT_TYPE_LEDS) |
725 | return -EINVAL; | |
726 | ||
727 | out_buf = kzalloc(DJREPORT_SHORT_LENGTH, GFP_ATOMIC); | |
728 | if (!out_buf) | |
729 | return -ENOMEM; | |
730 | ||
51217e69 | 731 | if (count > DJREPORT_SHORT_LENGTH - 2) |
0e40d356 BT |
732 | count = DJREPORT_SHORT_LENGTH - 2; |
733 | ||
734 | out_buf[0] = REPORT_ID_DJ_SHORT; | |
735 | out_buf[1] = djdev->device_index; | |
736 | memcpy(out_buf + 2, buf, count); | |
737 | ||
0e40d356 | 738 | ret = hid_hw_raw_request(djrcv_dev->hdev, out_buf[0], out_buf, |
bd27e202 | 739 | DJREPORT_SHORT_LENGTH, report_type, reqtype); |
0e40d356 BT |
740 | |
741 | kfree(out_buf); | |
742 | return ret; | |
534a7b8e NLC |
743 | } |
744 | ||
6d603326 | 745 | static void rdcat(char *rdesc, unsigned int *rsize, const char *data, unsigned int size) |
2a039bf5 | 746 | { |
6d603326 | 747 | memcpy(rdesc + *rsize, data, size); |
2a039bf5 HR |
748 | *rsize += size; |
749 | } | |
750 | ||
534a7b8e NLC |
751 | static int logi_dj_ll_parse(struct hid_device *hid) |
752 | { | |
753 | struct dj_device *djdev = hid->driver_data; | |
2a039bf5 HR |
754 | unsigned int rsize = 0; |
755 | char *rdesc; | |
534a7b8e NLC |
756 | int retval; |
757 | ||
758 | dbg_hid("%s\n", __func__); | |
759 | ||
760 | djdev->hdev->version = 0x0111; | |
761 | djdev->hdev->country = 0x00; | |
762 | ||
2a039bf5 HR |
763 | rdesc = kmalloc(MAX_RDESC_SIZE, GFP_KERNEL); |
764 | if (!rdesc) | |
765 | return -ENOMEM; | |
766 | ||
534a7b8e NLC |
767 | if (djdev->reports_supported & STD_KEYBOARD) { |
768 | dbg_hid("%s: sending a kbd descriptor, reports_supported: %x\n", | |
769 | __func__, djdev->reports_supported); | |
6d603326 | 770 | rdcat(rdesc, &rsize, kbd_descriptor, sizeof(kbd_descriptor)); |
534a7b8e NLC |
771 | } |
772 | ||
773 | if (djdev->reports_supported & STD_MOUSE) { | |
774 | dbg_hid("%s: sending a mouse descriptor, reports_supported: " | |
775 | "%x\n", __func__, djdev->reports_supported); | |
6d603326 | 776 | rdcat(rdesc, &rsize, mse_descriptor, sizeof(mse_descriptor)); |
534a7b8e NLC |
777 | } |
778 | ||
779 | if (djdev->reports_supported & MULTIMEDIA) { | |
780 | dbg_hid("%s: sending a multimedia report descriptor: %x\n", | |
781 | __func__, djdev->reports_supported); | |
6d603326 | 782 | rdcat(rdesc, &rsize, consumer_descriptor, sizeof(consumer_descriptor)); |
534a7b8e NLC |
783 | } |
784 | ||
785 | if (djdev->reports_supported & POWER_KEYS) { | |
786 | dbg_hid("%s: sending a power keys report descriptor: %x\n", | |
787 | __func__, djdev->reports_supported); | |
6d603326 | 788 | rdcat(rdesc, &rsize, syscontrol_descriptor, sizeof(syscontrol_descriptor)); |
534a7b8e NLC |
789 | } |
790 | ||
791 | if (djdev->reports_supported & MEDIA_CENTER) { | |
792 | dbg_hid("%s: sending a media center report descriptor: %x\n", | |
793 | __func__, djdev->reports_supported); | |
6d603326 | 794 | rdcat(rdesc, &rsize, media_descriptor, sizeof(media_descriptor)); |
534a7b8e NLC |
795 | } |
796 | ||
797 | if (djdev->reports_supported & KBD_LEDS) { | |
798 | dbg_hid("%s: need to send kbd leds report descriptor: %x\n", | |
799 | __func__, djdev->reports_supported); | |
800 | } | |
801 | ||
925f0f3e BT |
802 | rdcat(rdesc, &rsize, hidpp_descriptor, sizeof(hidpp_descriptor)); |
803 | ||
2a039bf5 HR |
804 | retval = hid_parse_report(hid, rdesc, rsize); |
805 | kfree(rdesc); | |
806 | ||
807 | return retval; | |
534a7b8e NLC |
808 | } |
809 | ||
534a7b8e NLC |
810 | static int logi_dj_ll_start(struct hid_device *hid) |
811 | { | |
812 | dbg_hid("%s\n", __func__); | |
813 | return 0; | |
814 | } | |
815 | ||
816 | static void logi_dj_ll_stop(struct hid_device *hid) | |
817 | { | |
818 | dbg_hid("%s\n", __func__); | |
819 | } | |
820 | ||
821 | ||
822 | static struct hid_ll_driver logi_dj_ll_driver = { | |
823 | .parse = logi_dj_ll_parse, | |
824 | .start = logi_dj_ll_start, | |
825 | .stop = logi_dj_ll_stop, | |
826 | .open = logi_dj_ll_open, | |
827 | .close = logi_dj_ll_close, | |
bd27e202 | 828 | .raw_request = logi_dj_ll_raw_request, |
534a7b8e NLC |
829 | }; |
830 | ||
925f0f3e | 831 | static int logi_dj_dj_event(struct hid_device *hdev, |
534a7b8e NLC |
832 | struct hid_report *report, u8 *data, |
833 | int size) | |
834 | { | |
835 | struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev); | |
836 | struct dj_report *dj_report = (struct dj_report *) data; | |
837 | unsigned long flags; | |
534a7b8e | 838 | |
925f0f3e BT |
839 | /* |
840 | * Here we receive all data coming from iface 2, there are 3 cases: | |
534a7b8e | 841 | * |
925f0f3e BT |
842 | * 1) Data is intended for this driver i. e. data contains arrival, |
843 | * departure, etc notifications, in which case we queue them for delayed | |
844 | * processing by the work queue. We return 1 to hid-core as no further | |
845 | * processing is required from it. | |
534a7b8e | 846 | * |
925f0f3e BT |
847 | * 2) Data informs a connection change, if the change means rf link |
848 | * loss, then we must send a null report to the upper layer to discard | |
849 | * potentially pressed keys that may be repeated forever by the input | |
850 | * layer. Return 1 to hid-core as no further processing is required. | |
534a7b8e | 851 | * |
925f0f3e BT |
852 | * 3) Data is an actual input event from a paired DJ device in which |
853 | * case we forward it to the correct hid device (via hid_input_report() | |
854 | * ) and return 1 so hid-core does not anything else with it. | |
534a7b8e | 855 | */ |
5abfe85c | 856 | |
ad3e14d7 JK |
857 | if ((dj_report->device_index < DJ_DEVICE_INDEX_MIN) || |
858 | (dj_report->device_index > DJ_DEVICE_INDEX_MAX)) { | |
5abfe85c BT |
859 | /* |
860 | * Device index is wrong, bail out. | |
861 | * This driver can ignore safely the receiver notifications, | |
862 | * so ignore those reports too. | |
863 | */ | |
864 | if (dj_report->device_index != DJ_RECEIVER_INDEX) | |
865 | dev_err(&hdev->dev, "%s: invalid device index:%d\n", | |
ad3e14d7 JK |
866 | __func__, dj_report->device_index); |
867 | return false; | |
868 | } | |
534a7b8e NLC |
869 | |
870 | spin_lock_irqsave(&djrcv_dev->lock, flags); | |
368d4e59 BT |
871 | |
872 | if (!djrcv_dev->paired_dj_devices[dj_report->device_index]) { | |
873 | /* received an event for an unknown device, bail out */ | |
874 | logi_dj_recv_queue_notification(djrcv_dev, dj_report); | |
875 | goto out; | |
876 | } | |
877 | ||
5abfe85c BT |
878 | switch (dj_report->report_type) { |
879 | case REPORT_TYPE_NOTIF_DEVICE_PAIRED: | |
368d4e59 BT |
880 | /* pairing notifications are handled above the switch */ |
881 | break; | |
5abfe85c BT |
882 | case REPORT_TYPE_NOTIF_DEVICE_UNPAIRED: |
883 | logi_dj_recv_queue_notification(djrcv_dev, dj_report); | |
884 | break; | |
885 | case REPORT_TYPE_NOTIF_CONNECTION_STATUS: | |
886 | if (dj_report->report_params[CONNECTION_STATUS_PARAM_STATUS] == | |
887 | STATUS_LINKLOSS) { | |
888 | logi_dj_recv_forward_null_report(djrcv_dev, dj_report); | |
534a7b8e | 889 | } |
5abfe85c BT |
890 | break; |
891 | default: | |
892 | logi_dj_recv_forward_report(djrcv_dev, dj_report); | |
534a7b8e | 893 | } |
368d4e59 BT |
894 | |
895 | out: | |
534a7b8e NLC |
896 | spin_unlock_irqrestore(&djrcv_dev->lock, flags); |
897 | ||
5abfe85c | 898 | return true; |
534a7b8e NLC |
899 | } |
900 | ||
925f0f3e BT |
901 | static int logi_dj_hidpp_event(struct hid_device *hdev, |
902 | struct hid_report *report, u8 *data, | |
903 | int size) | |
904 | { | |
905 | struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev); | |
906 | struct dj_report *dj_report = (struct dj_report *) data; | |
907 | unsigned long flags; | |
908 | u8 device_index = dj_report->device_index; | |
909 | ||
33797820 BT |
910 | if (device_index == HIDPP_RECEIVER_INDEX) { |
911 | /* special case were the device wants to know its unifying | |
912 | * name */ | |
913 | if (size == HIDPP_REPORT_LONG_LENGTH && | |
914 | !memcmp(data, unifying_name_answer, | |
915 | sizeof(unifying_name_answer)) && | |
916 | ((data[4] & 0xF0) == 0x40)) | |
917 | device_index = (data[4] & 0x0F) + 1; | |
918 | else | |
919 | return false; | |
920 | } | |
925f0f3e BT |
921 | |
922 | /* | |
923 | * Data is from the HID++ collection, in this case, we forward the | |
924 | * data to the corresponding child dj device and return 0 to hid-core | |
925 | * so he data also goes to the hidraw device of the receiver. This | |
926 | * allows a user space application to implement the full HID++ routing | |
927 | * via the receiver. | |
928 | */ | |
929 | ||
930 | if ((device_index < DJ_DEVICE_INDEX_MIN) || | |
931 | (device_index > DJ_DEVICE_INDEX_MAX)) { | |
932 | /* | |
933 | * Device index is wrong, bail out. | |
934 | * This driver can ignore safely the receiver notifications, | |
935 | * so ignore those reports too. | |
936 | */ | |
937 | dev_err(&hdev->dev, "%s: invalid device index:%d\n", | |
938 | __func__, dj_report->device_index); | |
939 | return false; | |
940 | } | |
941 | ||
942 | spin_lock_irqsave(&djrcv_dev->lock, flags); | |
943 | ||
944 | if (!djrcv_dev->paired_dj_devices[device_index]) | |
945 | /* received an event for an unknown device, bail out */ | |
946 | goto out; | |
947 | ||
948 | logi_dj_recv_forward_hidpp(djrcv_dev->paired_dj_devices[device_index], | |
949 | data, size); | |
950 | ||
951 | out: | |
952 | spin_unlock_irqrestore(&djrcv_dev->lock, flags); | |
953 | ||
954 | return false; | |
955 | } | |
956 | ||
957 | static int logi_dj_raw_event(struct hid_device *hdev, | |
958 | struct hid_report *report, u8 *data, | |
959 | int size) | |
960 | { | |
961 | dbg_hid("%s, size:%d\n", __func__, size); | |
962 | ||
963 | switch (data[0]) { | |
964 | case REPORT_ID_DJ_SHORT: | |
f254ae93 PW |
965 | if (size != DJREPORT_SHORT_LENGTH) { |
966 | dev_err(&hdev->dev, "DJ report of bad size (%d)", size); | |
967 | return false; | |
968 | } | |
925f0f3e BT |
969 | return logi_dj_dj_event(hdev, report, data, size); |
970 | case REPORT_ID_HIDPP_SHORT: | |
f254ae93 PW |
971 | if (size != HIDPP_REPORT_SHORT_LENGTH) { |
972 | dev_err(&hdev->dev, | |
973 | "Short HID++ report of bad size (%d)", size); | |
974 | return false; | |
975 | } | |
976 | return logi_dj_hidpp_event(hdev, report, data, size); | |
925f0f3e | 977 | case REPORT_ID_HIDPP_LONG: |
f254ae93 PW |
978 | if (size != HIDPP_REPORT_LONG_LENGTH) { |
979 | dev_err(&hdev->dev, | |
980 | "Long HID++ report of bad size (%d)", size); | |
981 | return false; | |
982 | } | |
925f0f3e BT |
983 | return logi_dj_hidpp_event(hdev, report, data, size); |
984 | } | |
985 | ||
986 | return false; | |
987 | } | |
988 | ||
534a7b8e NLC |
989 | static int logi_dj_probe(struct hid_device *hdev, |
990 | const struct hid_device_id *id) | |
991 | { | |
992 | struct usb_interface *intf = to_usb_interface(hdev->dev.parent); | |
993 | struct dj_receiver_dev *djrcv_dev; | |
994 | int retval; | |
995 | ||
534a7b8e NLC |
996 | dbg_hid("%s called for ifnum %d\n", __func__, |
997 | intf->cur_altsetting->desc.bInterfaceNumber); | |
998 | ||
999 | /* Ignore interfaces 0 and 1, they will not carry any data, dont create | |
1000 | * any hid_device for them */ | |
1001 | if (intf->cur_altsetting->desc.bInterfaceNumber != | |
1002 | LOGITECH_DJ_INTERFACE_NUMBER) { | |
1003 | dbg_hid("%s: ignoring ifnum %d\n", __func__, | |
1004 | intf->cur_altsetting->desc.bInterfaceNumber); | |
1005 | return -ENODEV; | |
1006 | } | |
1007 | ||
1008 | /* Treat interface 2 */ | |
1009 | ||
1010 | djrcv_dev = kzalloc(sizeof(struct dj_receiver_dev), GFP_KERNEL); | |
1011 | if (!djrcv_dev) { | |
1012 | dev_err(&hdev->dev, | |
1013 | "%s:failed allocating dj_receiver_dev\n", __func__); | |
1014 | return -ENOMEM; | |
1015 | } | |
1016 | djrcv_dev->hdev = hdev; | |
1017 | INIT_WORK(&djrcv_dev->work, delayedwork_callback); | |
1018 | spin_lock_init(&djrcv_dev->lock); | |
1019 | if (kfifo_alloc(&djrcv_dev->notif_fifo, | |
1020 | DJ_MAX_NUMBER_NOTIFICATIONS * sizeof(struct dj_report), | |
1021 | GFP_KERNEL)) { | |
1022 | dev_err(&hdev->dev, | |
1023 | "%s:failed allocating notif_fifo\n", __func__); | |
1024 | kfree(djrcv_dev); | |
1025 | return -ENOMEM; | |
1026 | } | |
1027 | hid_set_drvdata(hdev, djrcv_dev); | |
1028 | ||
1029 | /* Call to usbhid to fetch the HID descriptors of interface 2 and | |
1030 | * subsequently call to the hid/hid-core to parse the fetched | |
1031 | * descriptors, this will in turn create the hidraw and hiddev nodes | |
1032 | * for interface 2 of the receiver */ | |
1033 | retval = hid_parse(hdev); | |
1034 | if (retval) { | |
1035 | dev_err(&hdev->dev, | |
1036 | "%s:parse of interface 2 failed\n", __func__); | |
1037 | goto hid_parse_fail; | |
1038 | } | |
1039 | ||
297502ab KC |
1040 | if (!hid_validate_values(hdev, HID_OUTPUT_REPORT, REPORT_ID_DJ_SHORT, |
1041 | 0, DJREPORT_SHORT_LENGTH - 1)) { | |
1042 | retval = -ENODEV; | |
1043 | goto hid_parse_fail; | |
1044 | } | |
1045 | ||
534a7b8e NLC |
1046 | /* Starts the usb device and connects to upper interfaces hiddev and |
1047 | * hidraw */ | |
1048 | retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT); | |
1049 | if (retval) { | |
1050 | dev_err(&hdev->dev, | |
1051 | "%s:hid_hw_start returned error\n", __func__); | |
1052 | goto hid_hw_start_fail; | |
1053 | } | |
1054 | ||
1055 | retval = logi_dj_recv_switch_to_dj_mode(djrcv_dev, 0); | |
1056 | if (retval < 0) { | |
1057 | dev_err(&hdev->dev, | |
1058 | "%s:logi_dj_recv_switch_to_dj_mode returned error:%d\n", | |
1059 | __func__, retval); | |
1060 | goto switch_to_dj_mode_fail; | |
1061 | } | |
1062 | ||
1063 | /* This is enabling the polling urb on the IN endpoint */ | |
ddf7540e | 1064 | retval = hid_hw_open(hdev); |
534a7b8e | 1065 | if (retval < 0) { |
ddf7540e BT |
1066 | dev_err(&hdev->dev, "%s:hid_hw_open returned error:%d\n", |
1067 | __func__, retval); | |
534a7b8e NLC |
1068 | goto llopen_failed; |
1069 | } | |
1070 | ||
a9dd22b7 AR |
1071 | /* Allow incoming packets to arrive: */ |
1072 | hid_device_io_start(hdev); | |
1073 | ||
534a7b8e NLC |
1074 | retval = logi_dj_recv_query_paired_devices(djrcv_dev); |
1075 | if (retval < 0) { | |
1076 | dev_err(&hdev->dev, "%s:logi_dj_recv_query_paired_devices " | |
1077 | "error:%d\n", __func__, retval); | |
1078 | goto logi_dj_recv_query_paired_devices_failed; | |
1079 | } | |
1080 | ||
1081 | return retval; | |
1082 | ||
1083 | logi_dj_recv_query_paired_devices_failed: | |
ddf7540e | 1084 | hid_hw_close(hdev); |
534a7b8e NLC |
1085 | |
1086 | llopen_failed: | |
1087 | switch_to_dj_mode_fail: | |
1088 | hid_hw_stop(hdev); | |
1089 | ||
1090 | hid_hw_start_fail: | |
1091 | hid_parse_fail: | |
1092 | kfifo_free(&djrcv_dev->notif_fifo); | |
1093 | kfree(djrcv_dev); | |
1094 | hid_set_drvdata(hdev, NULL); | |
1095 | return retval; | |
1096 | ||
1097 | } | |
1098 | ||
1099 | #ifdef CONFIG_PM | |
1100 | static int logi_dj_reset_resume(struct hid_device *hdev) | |
1101 | { | |
1102 | int retval; | |
1103 | struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev); | |
1104 | ||
1105 | retval = logi_dj_recv_switch_to_dj_mode(djrcv_dev, 0); | |
1106 | if (retval < 0) { | |
1107 | dev_err(&hdev->dev, | |
1108 | "%s:logi_dj_recv_switch_to_dj_mode returned error:%d\n", | |
1109 | __func__, retval); | |
1110 | } | |
1111 | ||
1112 | return 0; | |
1113 | } | |
1114 | #endif | |
1115 | ||
1116 | static void logi_dj_remove(struct hid_device *hdev) | |
1117 | { | |
1118 | struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev); | |
1119 | struct dj_device *dj_dev; | |
1120 | int i; | |
1121 | ||
1122 | dbg_hid("%s\n", __func__); | |
1123 | ||
1124 | cancel_work_sync(&djrcv_dev->work); | |
1125 | ||
ddf7540e | 1126 | hid_hw_close(hdev); |
534a7b8e NLC |
1127 | hid_hw_stop(hdev); |
1128 | ||
1129 | /* I suppose that at this point the only context that can access | |
1130 | * the djrecv_data is this thread as the work item is guaranteed to | |
1131 | * have finished and no more raw_event callbacks should arrive after | |
1132 | * the remove callback was triggered so no locks are put around the | |
1133 | * code below */ | |
844580ff | 1134 | for (i = 0; i < (DJ_MAX_PAIRED_DEVICES + DJ_DEVICE_INDEX_MIN); i++) { |
534a7b8e NLC |
1135 | dj_dev = djrcv_dev->paired_dj_devices[i]; |
1136 | if (dj_dev != NULL) { | |
1137 | hid_destroy_device(dj_dev->hdev); | |
1138 | kfree(dj_dev); | |
1139 | djrcv_dev->paired_dj_devices[i] = NULL; | |
1140 | } | |
1141 | } | |
1142 | ||
1143 | kfifo_free(&djrcv_dev->notif_fifo); | |
1144 | kfree(djrcv_dev); | |
1145 | hid_set_drvdata(hdev, NULL); | |
1146 | } | |
1147 | ||
534a7b8e NLC |
1148 | static const struct hid_device_id logi_dj_receivers[] = { |
1149 | {HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, | |
1150 | USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER)}, | |
1151 | {HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, | |
1152 | USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER_2)}, | |
1153 | {} | |
1154 | }; | |
1155 | ||
1156 | MODULE_DEVICE_TABLE(hid, logi_dj_receivers); | |
1157 | ||
1158 | static struct hid_driver logi_djreceiver_driver = { | |
1159 | .name = "logitech-djreceiver", | |
1160 | .id_table = logi_dj_receivers, | |
1161 | .probe = logi_dj_probe, | |
1162 | .remove = logi_dj_remove, | |
1163 | .raw_event = logi_dj_raw_event, | |
1164 | #ifdef CONFIG_PM | |
1165 | .reset_resume = logi_dj_reset_resume, | |
1166 | #endif | |
1167 | }; | |
1168 | ||
ab94e562 | 1169 | module_hid_driver(logi_djreceiver_driver); |
534a7b8e | 1170 | |
534a7b8e NLC |
1171 | MODULE_LICENSE("GPL"); |
1172 | MODULE_AUTHOR("Logitech"); | |
1173 | MODULE_AUTHOR("Nestor Lopez Casado"); | |
1174 | MODULE_AUTHOR("nlopezcasad@logitech.com"); |