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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * USB HID support for Linux | |
3 | * | |
4 | * Copyright (c) 1999 Andreas Gal | |
bf0964dc MH |
5 | * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz> |
6 | * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc | |
0361a28d | 7 | * Copyright (c) 2007-2008 Oliver Neukum |
7d39e849 | 8 | * Copyright (c) 2006-2010 Jiri Kosina |
1da177e4 LT |
9 | */ |
10 | ||
11 | /* | |
12 | * This program is free software; you can redistribute it and/or modify it | |
13 | * under the terms of the GNU General Public License as published by the Free | |
14 | * Software Foundation; either version 2 of the License, or (at your option) | |
15 | * any later version. | |
16 | */ | |
17 | ||
18 | #include <linux/module.h> | |
19 | #include <linux/slab.h> | |
20 | #include <linux/init.h> | |
21 | #include <linux/kernel.h> | |
1da177e4 LT |
22 | #include <linux/list.h> |
23 | #include <linux/mm.h> | |
3d5afd32 | 24 | #include <linux/mutex.h> |
1da177e4 LT |
25 | #include <linux/spinlock.h> |
26 | #include <asm/unaligned.h> | |
27 | #include <asm/byteorder.h> | |
28 | #include <linux/input.h> | |
29 | #include <linux/wait.h> | |
0361a28d | 30 | #include <linux/workqueue.h> |
1da177e4 | 31 | |
1da177e4 LT |
32 | #include <linux/usb.h> |
33 | ||
dde5845a | 34 | #include <linux/hid.h> |
1da177e4 | 35 | #include <linux/hiddev.h> |
c080d89a | 36 | #include <linux/hid-debug.h> |
86166b7b | 37 | #include <linux/hidraw.h> |
4916b3a5 | 38 | #include "usbhid.h" |
1da177e4 LT |
39 | |
40 | /* | |
41 | * Version Information | |
42 | */ | |
43 | ||
1da177e4 LT |
44 | #define DRIVER_DESC "USB HID core driver" |
45 | #define DRIVER_LICENSE "GPL" | |
46 | ||
1da177e4 LT |
47 | /* |
48 | * Module parameters. | |
49 | */ | |
50 | ||
51 | static unsigned int hid_mousepoll_interval; | |
52 | module_param_named(mousepoll, hid_mousepoll_interval, uint, 0644); | |
53 | MODULE_PARM_DESC(mousepoll, "Polling interval of mice"); | |
54 | ||
0361a28d ON |
55 | static unsigned int ignoreled; |
56 | module_param_named(ignoreled, ignoreled, uint, 0644); | |
57 | MODULE_PARM_DESC(ignoreled, "Autosuspend with active leds"); | |
58 | ||
876b9276 PW |
59 | /* Quirks specified at module load time */ |
60 | static char *quirks_param[MAX_USBHID_BOOT_QUIRKS] = { [ 0 ... (MAX_USBHID_BOOT_QUIRKS - 1) ] = NULL }; | |
61 | module_param_array_named(quirks, quirks_param, charp, NULL, 0444); | |
62 | MODULE_PARM_DESC(quirks, "Add/modify USB HID quirks by specifying " | |
63 | " quirks=vendorID:productID:quirks" | |
64 | " where vendorID, productID, and quirks are all in" | |
65 | " 0x-prefixed hex"); | |
1da177e4 | 66 | /* |
48b4554a | 67 | * Input submission and I/O error handler. |
1da177e4 | 68 | */ |
0361a28d ON |
69 | static DEFINE_MUTEX(hid_open_mut); |
70 | static struct workqueue_struct *resumption_waker; | |
1da177e4 | 71 | |
48b4554a | 72 | static void hid_io_error(struct hid_device *hid); |
0361a28d ON |
73 | static int hid_submit_out(struct hid_device *hid); |
74 | static int hid_submit_ctrl(struct hid_device *hid); | |
75 | static void hid_cancel_delayed_stuff(struct usbhid_device *usbhid); | |
48b4554a JK |
76 | |
77 | /* Start up the input URB */ | |
78 | static int hid_start_in(struct hid_device *hid) | |
1da177e4 | 79 | { |
1da177e4 | 80 | unsigned long flags; |
48b4554a JK |
81 | int rc = 0; |
82 | struct usbhid_device *usbhid = hid->driver_data; | |
1da177e4 | 83 | |
0361a28d ON |
84 | spin_lock_irqsave(&usbhid->lock, flags); |
85 | if (hid->open > 0 && | |
69626f23 | 86 | !test_bit(HID_DISCONNECTED, &usbhid->iofl) && |
0361a28d | 87 | !test_bit(HID_REPORTED_IDLE, &usbhid->iofl) && |
48b4554a JK |
88 | !test_and_set_bit(HID_IN_RUNNING, &usbhid->iofl)) { |
89 | rc = usb_submit_urb(usbhid->urbin, GFP_ATOMIC); | |
90 | if (rc != 0) | |
91 | clear_bit(HID_IN_RUNNING, &usbhid->iofl); | |
1da177e4 | 92 | } |
0361a28d | 93 | spin_unlock_irqrestore(&usbhid->lock, flags); |
48b4554a | 94 | return rc; |
1da177e4 LT |
95 | } |
96 | ||
48b4554a JK |
97 | /* I/O retry timer routine */ |
98 | static void hid_retry_timeout(unsigned long _hid) | |
1da177e4 | 99 | { |
48b4554a | 100 | struct hid_device *hid = (struct hid_device *) _hid; |
4916b3a5 | 101 | struct usbhid_device *usbhid = hid->driver_data; |
1da177e4 | 102 | |
48b4554a JK |
103 | dev_dbg(&usbhid->intf->dev, "retrying intr urb\n"); |
104 | if (hid_start_in(hid)) | |
105 | hid_io_error(hid); | |
1da177e4 LT |
106 | } |
107 | ||
48b4554a JK |
108 | /* Workqueue routine to reset the device or clear a halt */ |
109 | static void hid_reset(struct work_struct *work) | |
1da177e4 | 110 | { |
48b4554a JK |
111 | struct usbhid_device *usbhid = |
112 | container_of(work, struct usbhid_device, reset_work); | |
113 | struct hid_device *hid = usbhid->hid; | |
011b15df | 114 | int rc = 0; |
1da177e4 | 115 | |
48b4554a JK |
116 | if (test_bit(HID_CLEAR_HALT, &usbhid->iofl)) { |
117 | dev_dbg(&usbhid->intf->dev, "clear halt\n"); | |
118 | rc = usb_clear_halt(hid_to_usb_dev(hid), usbhid->urbin->pipe); | |
119 | clear_bit(HID_CLEAR_HALT, &usbhid->iofl); | |
120 | hid_start_in(hid); | |
121 | } | |
1da177e4 | 122 | |
48b4554a JK |
123 | else if (test_bit(HID_RESET_PENDING, &usbhid->iofl)) { |
124 | dev_dbg(&usbhid->intf->dev, "resetting device\n"); | |
011b15df AS |
125 | rc = usb_lock_device_for_reset(hid_to_usb_dev(hid), usbhid->intf); |
126 | if (rc == 0) { | |
742120c6 | 127 | rc = usb_reset_device(hid_to_usb_dev(hid)); |
011b15df | 128 | usb_unlock_device(hid_to_usb_dev(hid)); |
1da177e4 | 129 | } |
48b4554a | 130 | clear_bit(HID_RESET_PENDING, &usbhid->iofl); |
1da177e4 LT |
131 | } |
132 | ||
48b4554a JK |
133 | switch (rc) { |
134 | case 0: | |
135 | if (!test_bit(HID_IN_RUNNING, &usbhid->iofl)) | |
136 | hid_io_error(hid); | |
137 | break; | |
138 | default: | |
58037eb9 | 139 | err_hid("can't reset device, %s-%s/input%d, status %d", |
48b4554a JK |
140 | hid_to_usb_dev(hid)->bus->bus_name, |
141 | hid_to_usb_dev(hid)->devpath, | |
142 | usbhid->ifnum, rc); | |
143 | /* FALLTHROUGH */ | |
144 | case -EHOSTUNREACH: | |
145 | case -ENODEV: | |
146 | case -EINTR: | |
147 | break; | |
1da177e4 | 148 | } |
1da177e4 LT |
149 | } |
150 | ||
48b4554a JK |
151 | /* Main I/O error handler */ |
152 | static void hid_io_error(struct hid_device *hid) | |
dde5845a | 153 | { |
48b4554a JK |
154 | unsigned long flags; |
155 | struct usbhid_device *usbhid = hid->driver_data; | |
dde5845a | 156 | |
0361a28d | 157 | spin_lock_irqsave(&usbhid->lock, flags); |
dde5845a | 158 | |
48b4554a | 159 | /* Stop when disconnected */ |
69626f23 | 160 | if (test_bit(HID_DISCONNECTED, &usbhid->iofl)) |
48b4554a | 161 | goto done; |
dde5845a | 162 | |
5e2a55f2 AS |
163 | /* If it has been a while since the last error, we'll assume |
164 | * this a brand new error and reset the retry timeout. */ | |
165 | if (time_after(jiffies, usbhid->stop_retry + HZ/2)) | |
166 | usbhid->retry_delay = 0; | |
167 | ||
48b4554a JK |
168 | /* When an error occurs, retry at increasing intervals */ |
169 | if (usbhid->retry_delay == 0) { | |
170 | usbhid->retry_delay = 13; /* Then 26, 52, 104, 104, ... */ | |
171 | usbhid->stop_retry = jiffies + msecs_to_jiffies(1000); | |
172 | } else if (usbhid->retry_delay < 100) | |
173 | usbhid->retry_delay *= 2; | |
dde5845a | 174 | |
48b4554a | 175 | if (time_after(jiffies, usbhid->stop_retry)) { |
4916b3a5 | 176 | |
48b4554a JK |
177 | /* Retries failed, so do a port reset */ |
178 | if (!test_and_set_bit(HID_RESET_PENDING, &usbhid->iofl)) { | |
179 | schedule_work(&usbhid->reset_work); | |
180 | goto done; | |
181 | } | |
1da177e4 LT |
182 | } |
183 | ||
48b4554a JK |
184 | mod_timer(&usbhid->io_retry, |
185 | jiffies + msecs_to_jiffies(usbhid->retry_delay)); | |
186 | done: | |
0361a28d ON |
187 | spin_unlock_irqrestore(&usbhid->lock, flags); |
188 | } | |
189 | ||
190 | static void usbhid_mark_busy(struct usbhid_device *usbhid) | |
191 | { | |
192 | struct usb_interface *intf = usbhid->intf; | |
193 | ||
194 | usb_mark_last_busy(interface_to_usbdev(intf)); | |
195 | } | |
196 | ||
197 | static int usbhid_restart_out_queue(struct usbhid_device *usbhid) | |
198 | { | |
199 | struct hid_device *hid = usb_get_intfdata(usbhid->intf); | |
200 | int kicked; | |
201 | ||
202 | if (!hid) | |
203 | return 0; | |
204 | ||
205 | if ((kicked = (usbhid->outhead != usbhid->outtail))) { | |
206 | dbg("Kicking head %d tail %d", usbhid->outhead, usbhid->outtail); | |
207 | if (hid_submit_out(hid)) { | |
208 | clear_bit(HID_OUT_RUNNING, &usbhid->iofl); | |
209 | wake_up(&usbhid->wait); | |
210 | } | |
211 | } | |
212 | return kicked; | |
213 | } | |
214 | ||
215 | static int usbhid_restart_ctrl_queue(struct usbhid_device *usbhid) | |
216 | { | |
217 | struct hid_device *hid = usb_get_intfdata(usbhid->intf); | |
218 | int kicked; | |
219 | ||
220 | WARN_ON(hid == NULL); | |
221 | if (!hid) | |
222 | return 0; | |
223 | ||
224 | if ((kicked = (usbhid->ctrlhead != usbhid->ctrltail))) { | |
225 | dbg("Kicking head %d tail %d", usbhid->ctrlhead, usbhid->ctrltail); | |
226 | if (hid_submit_ctrl(hid)) { | |
227 | clear_bit(HID_CTRL_RUNNING, &usbhid->iofl); | |
228 | wake_up(&usbhid->wait); | |
229 | } | |
230 | } | |
231 | return kicked; | |
1da177e4 LT |
232 | } |
233 | ||
48b4554a JK |
234 | /* |
235 | * Input interrupt completion handler. | |
236 | */ | |
854561b0 | 237 | |
48b4554a | 238 | static void hid_irq_in(struct urb *urb) |
1da177e4 | 239 | { |
48b4554a JK |
240 | struct hid_device *hid = urb->context; |
241 | struct usbhid_device *usbhid = hid->driver_data; | |
242 | int status; | |
1da177e4 | 243 | |
48b4554a | 244 | switch (urb->status) { |
880d29f1 | 245 | case 0: /* success */ |
0361a28d | 246 | usbhid_mark_busy(usbhid); |
880d29f1 JS |
247 | usbhid->retry_delay = 0; |
248 | hid_input_report(urb->context, HID_INPUT_REPORT, | |
249 | urb->transfer_buffer, | |
250 | urb->actual_length, 1); | |
0361a28d ON |
251 | /* |
252 | * autosuspend refused while keys are pressed | |
253 | * because most keyboards don't wake up when | |
254 | * a key is released | |
255 | */ | |
256 | if (hid_check_keys_pressed(hid)) | |
257 | set_bit(HID_KEYS_PRESSED, &usbhid->iofl); | |
258 | else | |
259 | clear_bit(HID_KEYS_PRESSED, &usbhid->iofl); | |
880d29f1 JS |
260 | break; |
261 | case -EPIPE: /* stall */ | |
0361a28d | 262 | usbhid_mark_busy(usbhid); |
880d29f1 JS |
263 | clear_bit(HID_IN_RUNNING, &usbhid->iofl); |
264 | set_bit(HID_CLEAR_HALT, &usbhid->iofl); | |
265 | schedule_work(&usbhid->reset_work); | |
266 | return; | |
267 | case -ECONNRESET: /* unlink */ | |
268 | case -ENOENT: | |
269 | case -ESHUTDOWN: /* unplug */ | |
270 | clear_bit(HID_IN_RUNNING, &usbhid->iofl); | |
271 | return; | |
272 | case -EILSEQ: /* protocol error or unplug */ | |
273 | case -EPROTO: /* protocol error or unplug */ | |
274 | case -ETIME: /* protocol error or unplug */ | |
275 | case -ETIMEDOUT: /* Should never happen, but... */ | |
0361a28d | 276 | usbhid_mark_busy(usbhid); |
880d29f1 JS |
277 | clear_bit(HID_IN_RUNNING, &usbhid->iofl); |
278 | hid_io_error(hid); | |
279 | return; | |
280 | default: /* error */ | |
7d89fe12 GKH |
281 | dev_warn(&urb->dev->dev, "input irq status %d " |
282 | "received\n", urb->status); | |
48b4554a | 283 | } |
1da177e4 | 284 | |
48b4554a JK |
285 | status = usb_submit_urb(urb, GFP_ATOMIC); |
286 | if (status) { | |
287 | clear_bit(HID_IN_RUNNING, &usbhid->iofl); | |
288 | if (status != -EPERM) { | |
58037eb9 | 289 | err_hid("can't resubmit intr, %s-%s/input%d, status %d", |
48b4554a JK |
290 | hid_to_usb_dev(hid)->bus->bus_name, |
291 | hid_to_usb_dev(hid)->devpath, | |
292 | usbhid->ifnum, status); | |
293 | hid_io_error(hid); | |
294 | } | |
295 | } | |
1da177e4 LT |
296 | } |
297 | ||
48b4554a | 298 | static int hid_submit_out(struct hid_device *hid) |
1da177e4 | 299 | { |
48b4554a | 300 | struct hid_report *report; |
f129ea6d | 301 | char *raw_report; |
4916b3a5 JK |
302 | struct usbhid_device *usbhid = hid->driver_data; |
303 | ||
f129ea6d AH |
304 | report = usbhid->out[usbhid->outtail].report; |
305 | raw_report = usbhid->out[usbhid->outtail].raw_report; | |
1da177e4 | 306 | |
0361a28d ON |
307 | if (!test_bit(HID_REPORTED_IDLE, &usbhid->iofl)) { |
308 | usbhid->urbout->transfer_buffer_length = ((report->size - 1) >> 3) + 1 + (report->id > 0); | |
309 | usbhid->urbout->dev = hid_to_usb_dev(hid); | |
310 | memcpy(usbhid->outbuf, raw_report, usbhid->urbout->transfer_buffer_length); | |
311 | kfree(raw_report); | |
1d3e2023 | 312 | |
0361a28d | 313 | dbg_hid("submitting out urb\n"); |
d57cdcff | 314 | |
0361a28d ON |
315 | if (usb_submit_urb(usbhid->urbout, GFP_ATOMIC)) { |
316 | err_hid("usb_submit_urb(out) failed"); | |
317 | return -1; | |
318 | } | |
319 | } else { | |
320 | /* | |
321 | * queue work to wake up the device. | |
322 | * as the work queue is freezeable, this is safe | |
323 | * with respect to STD and STR | |
324 | */ | |
325 | queue_work(resumption_waker, &usbhid->restart_work); | |
48b4554a | 326 | } |
1da177e4 | 327 | |
48b4554a JK |
328 | return 0; |
329 | } | |
330 | ||
331 | static int hid_submit_ctrl(struct hid_device *hid) | |
1da177e4 LT |
332 | { |
333 | struct hid_report *report; | |
48b4554a | 334 | unsigned char dir; |
f129ea6d | 335 | char *raw_report; |
48b4554a | 336 | int len; |
4916b3a5 | 337 | struct usbhid_device *usbhid = hid->driver_data; |
1da177e4 | 338 | |
48b4554a | 339 | report = usbhid->ctrl[usbhid->ctrltail].report; |
f129ea6d | 340 | raw_report = usbhid->ctrl[usbhid->ctrltail].raw_report; |
48b4554a | 341 | dir = usbhid->ctrl[usbhid->ctrltail].dir; |
1da177e4 | 342 | |
0361a28d ON |
343 | if (!test_bit(HID_REPORTED_IDLE, &usbhid->iofl)) { |
344 | len = ((report->size - 1) >> 3) + 1 + (report->id > 0); | |
345 | if (dir == USB_DIR_OUT) { | |
346 | usbhid->urbctrl->pipe = usb_sndctrlpipe(hid_to_usb_dev(hid), 0); | |
347 | usbhid->urbctrl->transfer_buffer_length = len; | |
348 | memcpy(usbhid->ctrlbuf, raw_report, len); | |
349 | kfree(raw_report); | |
350 | } else { | |
351 | int maxpacket, padlen; | |
352 | ||
353 | usbhid->urbctrl->pipe = usb_rcvctrlpipe(hid_to_usb_dev(hid), 0); | |
354 | maxpacket = usb_maxpacket(hid_to_usb_dev(hid), usbhid->urbctrl->pipe, 0); | |
355 | if (maxpacket > 0) { | |
356 | padlen = DIV_ROUND_UP(len, maxpacket); | |
357 | padlen *= maxpacket; | |
358 | if (padlen > usbhid->bufsize) | |
359 | padlen = usbhid->bufsize; | |
360 | } else | |
361 | padlen = 0; | |
362 | usbhid->urbctrl->transfer_buffer_length = padlen; | |
363 | } | |
364 | usbhid->urbctrl->dev = hid_to_usb_dev(hid); | |
1da177e4 | 365 | |
0361a28d ON |
366 | usbhid->cr->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE | dir; |
367 | usbhid->cr->bRequest = (dir == USB_DIR_OUT) ? HID_REQ_SET_REPORT : HID_REQ_GET_REPORT; | |
368 | usbhid->cr->wValue = cpu_to_le16(((report->type + 1) << 8) | report->id); | |
369 | usbhid->cr->wIndex = cpu_to_le16(usbhid->ifnum); | |
370 | usbhid->cr->wLength = cpu_to_le16(len); | |
1da177e4 | 371 | |
0361a28d ON |
372 | dbg_hid("submitting ctrl urb: %s wValue=0x%04x wIndex=0x%04x wLength=%u\n", |
373 | usbhid->cr->bRequest == HID_REQ_SET_REPORT ? "Set_Report" : "Get_Report", | |
374 | usbhid->cr->wValue, usbhid->cr->wIndex, usbhid->cr->wLength); | |
1da177e4 | 375 | |
0361a28d ON |
376 | if (usb_submit_urb(usbhid->urbctrl, GFP_ATOMIC)) { |
377 | err_hid("usb_submit_urb(ctrl) failed"); | |
378 | return -1; | |
379 | } | |
380 | } else { | |
381 | /* | |
382 | * queue work to wake up the device. | |
383 | * as the work queue is freezeable, this is safe | |
384 | * with respect to STD and STR | |
385 | */ | |
386 | queue_work(resumption_waker, &usbhid->restart_work); | |
48b4554a | 387 | } |
1da177e4 | 388 | |
48b4554a JK |
389 | return 0; |
390 | } | |
1da177e4 | 391 | |
48b4554a JK |
392 | /* |
393 | * Output interrupt completion handler. | |
394 | */ | |
1da177e4 | 395 | |
48b4554a JK |
396 | static void hid_irq_out(struct urb *urb) |
397 | { | |
398 | struct hid_device *hid = urb->context; | |
399 | struct usbhid_device *usbhid = hid->driver_data; | |
400 | unsigned long flags; | |
401 | int unplug = 0; | |
1da177e4 | 402 | |
48b4554a | 403 | switch (urb->status) { |
880d29f1 JS |
404 | case 0: /* success */ |
405 | break; | |
406 | case -ESHUTDOWN: /* unplug */ | |
407 | unplug = 1; | |
408 | case -EILSEQ: /* protocol error or unplug */ | |
409 | case -EPROTO: /* protocol error or unplug */ | |
410 | case -ECONNRESET: /* unlink */ | |
411 | case -ENOENT: | |
412 | break; | |
413 | default: /* error */ | |
7d89fe12 GKH |
414 | dev_warn(&urb->dev->dev, "output irq status %d " |
415 | "received\n", urb->status); | |
48b4554a | 416 | } |
1da177e4 | 417 | |
0361a28d | 418 | spin_lock_irqsave(&usbhid->lock, flags); |
1da177e4 | 419 | |
48b4554a JK |
420 | if (unplug) |
421 | usbhid->outtail = usbhid->outhead; | |
422 | else | |
423 | usbhid->outtail = (usbhid->outtail + 1) & (HID_OUTPUT_FIFO_SIZE - 1); | |
1da177e4 | 424 | |
48b4554a JK |
425 | if (usbhid->outhead != usbhid->outtail) { |
426 | if (hid_submit_out(hid)) { | |
427 | clear_bit(HID_OUT_RUNNING, &usbhid->iofl); | |
1d1bdd20 | 428 | wake_up(&usbhid->wait); |
48b4554a | 429 | } |
0361a28d | 430 | spin_unlock_irqrestore(&usbhid->lock, flags); |
48b4554a JK |
431 | return; |
432 | } | |
1da177e4 | 433 | |
48b4554a | 434 | clear_bit(HID_OUT_RUNNING, &usbhid->iofl); |
0361a28d | 435 | spin_unlock_irqrestore(&usbhid->lock, flags); |
1d1bdd20 | 436 | wake_up(&usbhid->wait); |
48b4554a | 437 | } |
6345fdfd | 438 | |
48b4554a JK |
439 | /* |
440 | * Control pipe completion handler. | |
441 | */ | |
1da177e4 | 442 | |
48b4554a JK |
443 | static void hid_ctrl(struct urb *urb) |
444 | { | |
445 | struct hid_device *hid = urb->context; | |
446 | struct usbhid_device *usbhid = hid->driver_data; | |
0361a28d | 447 | int unplug = 0, status = urb->status; |
1da177e4 | 448 | |
0361a28d | 449 | spin_lock(&usbhid->lock); |
1da177e4 | 450 | |
0361a28d | 451 | switch (status) { |
880d29f1 JS |
452 | case 0: /* success */ |
453 | if (usbhid->ctrl[usbhid->ctrltail].dir == USB_DIR_IN) | |
454 | hid_input_report(urb->context, | |
455 | usbhid->ctrl[usbhid->ctrltail].report->type, | |
456 | urb->transfer_buffer, urb->actual_length, 0); | |
457 | break; | |
458 | case -ESHUTDOWN: /* unplug */ | |
459 | unplug = 1; | |
460 | case -EILSEQ: /* protocol error or unplug */ | |
461 | case -EPROTO: /* protocol error or unplug */ | |
462 | case -ECONNRESET: /* unlink */ | |
463 | case -ENOENT: | |
464 | case -EPIPE: /* report not available */ | |
465 | break; | |
466 | default: /* error */ | |
7d89fe12 | 467 | dev_warn(&urb->dev->dev, "ctrl urb status %d " |
0361a28d | 468 | "received\n", status); |
48b4554a | 469 | } |
1da177e4 | 470 | |
48b4554a JK |
471 | if (unplug) |
472 | usbhid->ctrltail = usbhid->ctrlhead; | |
473 | else | |
474 | usbhid->ctrltail = (usbhid->ctrltail + 1) & (HID_CONTROL_FIFO_SIZE - 1); | |
1da177e4 | 475 | |
48b4554a JK |
476 | if (usbhid->ctrlhead != usbhid->ctrltail) { |
477 | if (hid_submit_ctrl(hid)) { | |
478 | clear_bit(HID_CTRL_RUNNING, &usbhid->iofl); | |
1d1bdd20 | 479 | wake_up(&usbhid->wait); |
48b4554a | 480 | } |
0361a28d | 481 | spin_unlock(&usbhid->lock); |
48b4554a JK |
482 | return; |
483 | } | |
1da177e4 | 484 | |
48b4554a | 485 | clear_bit(HID_CTRL_RUNNING, &usbhid->iofl); |
0361a28d | 486 | spin_unlock(&usbhid->lock); |
1d1bdd20 | 487 | wake_up(&usbhid->wait); |
48b4554a | 488 | } |
1da177e4 | 489 | |
52cfc61b HS |
490 | static void __usbhid_submit_report(struct hid_device *hid, struct hid_report *report, |
491 | unsigned char dir) | |
48b4554a JK |
492 | { |
493 | int head; | |
48b4554a | 494 | struct usbhid_device *usbhid = hid->driver_data; |
f129ea6d | 495 | int len = ((report->size - 1) >> 3) + 1 + (report->id > 0); |
1da177e4 | 496 | |
48b4554a JK |
497 | if ((hid->quirks & HID_QUIRK_NOGET) && dir == USB_DIR_IN) |
498 | return; | |
b857c651 | 499 | |
48b4554a | 500 | if (usbhid->urbout && dir == USB_DIR_OUT && report->type == HID_OUTPUT_REPORT) { |
48b4554a | 501 | if ((head = (usbhid->outhead + 1) & (HID_OUTPUT_FIFO_SIZE - 1)) == usbhid->outtail) { |
7d89fe12 | 502 | dev_warn(&hid->dev, "output queue full\n"); |
48b4554a JK |
503 | return; |
504 | } | |
1da177e4 | 505 | |
f129ea6d AH |
506 | usbhid->out[usbhid->outhead].raw_report = kmalloc(len, GFP_ATOMIC); |
507 | if (!usbhid->out[usbhid->outhead].raw_report) { | |
46fcaec5 | 508 | dev_warn(&hid->dev, "output queueing failed\n"); |
f129ea6d AH |
509 | return; |
510 | } | |
511 | hid_output_report(report, usbhid->out[usbhid->outhead].raw_report); | |
512 | usbhid->out[usbhid->outhead].report = report; | |
48b4554a | 513 | usbhid->outhead = head; |
4871d3be | 514 | |
48b4554a JK |
515 | if (!test_and_set_bit(HID_OUT_RUNNING, &usbhid->iofl)) |
516 | if (hid_submit_out(hid)) | |
517 | clear_bit(HID_OUT_RUNNING, &usbhid->iofl); | |
48b4554a JK |
518 | return; |
519 | } | |
1da177e4 | 520 | |
48b4554a | 521 | if ((head = (usbhid->ctrlhead + 1) & (HID_CONTROL_FIFO_SIZE - 1)) == usbhid->ctrltail) { |
7d89fe12 | 522 | dev_warn(&hid->dev, "control queue full\n"); |
48b4554a JK |
523 | return; |
524 | } | |
8fd80133 | 525 | |
f129ea6d AH |
526 | if (dir == USB_DIR_OUT) { |
527 | usbhid->ctrl[usbhid->ctrlhead].raw_report = kmalloc(len, GFP_ATOMIC); | |
528 | if (!usbhid->ctrl[usbhid->ctrlhead].raw_report) { | |
46fcaec5 | 529 | dev_warn(&hid->dev, "control queueing failed\n"); |
f129ea6d AH |
530 | return; |
531 | } | |
532 | hid_output_report(report, usbhid->ctrl[usbhid->ctrlhead].raw_report); | |
533 | } | |
48b4554a JK |
534 | usbhid->ctrl[usbhid->ctrlhead].report = report; |
535 | usbhid->ctrl[usbhid->ctrlhead].dir = dir; | |
536 | usbhid->ctrlhead = head; | |
8fd80133 | 537 | |
48b4554a JK |
538 | if (!test_and_set_bit(HID_CTRL_RUNNING, &usbhid->iofl)) |
539 | if (hid_submit_ctrl(hid)) | |
540 | clear_bit(HID_CTRL_RUNNING, &usbhid->iofl); | |
0361a28d | 541 | } |
931e24b9 | 542 | |
0361a28d ON |
543 | void usbhid_submit_report(struct hid_device *hid, struct hid_report *report, unsigned char dir) |
544 | { | |
545 | struct usbhid_device *usbhid = hid->driver_data; | |
546 | unsigned long flags; | |
931e24b9 | 547 | |
0361a28d ON |
548 | spin_lock_irqsave(&usbhid->lock, flags); |
549 | __usbhid_submit_report(hid, report, dir); | |
550 | spin_unlock_irqrestore(&usbhid->lock, flags); | |
48b4554a | 551 | } |
606bd0a8 | 552 | EXPORT_SYMBOL_GPL(usbhid_submit_report); |
23b0d968 | 553 | |
48b4554a JK |
554 | static int usb_hidinput_input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) |
555 | { | |
e0712985 | 556 | struct hid_device *hid = input_get_drvdata(dev); |
0361a28d | 557 | struct usbhid_device *usbhid = hid->driver_data; |
48b4554a | 558 | struct hid_field *field; |
0361a28d | 559 | unsigned long flags; |
48b4554a | 560 | int offset; |
41ad5fba | 561 | |
48b4554a JK |
562 | if (type == EV_FF) |
563 | return input_ff_event(dev, type, code, value); | |
8d2bad87 | 564 | |
48b4554a JK |
565 | if (type != EV_LED) |
566 | return -1; | |
5556feae | 567 | |
48b4554a | 568 | if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) { |
7d89fe12 | 569 | dev_warn(&dev->dev, "event field not found\n"); |
48b4554a JK |
570 | return -1; |
571 | } | |
4a1a4d8b | 572 | |
48b4554a | 573 | hid_set_field(field, offset, value); |
0361a28d ON |
574 | if (value) { |
575 | spin_lock_irqsave(&usbhid->lock, flags); | |
576 | usbhid->ledcount++; | |
577 | spin_unlock_irqrestore(&usbhid->lock, flags); | |
578 | } else { | |
579 | spin_lock_irqsave(&usbhid->lock, flags); | |
580 | usbhid->ledcount--; | |
581 | spin_unlock_irqrestore(&usbhid->lock, flags); | |
582 | } | |
48b4554a | 583 | usbhid_submit_report(hid, field->report, USB_DIR_OUT); |
1da177e4 | 584 | |
48b4554a JK |
585 | return 0; |
586 | } | |
1da177e4 | 587 | |
48b4554a JK |
588 | int usbhid_wait_io(struct hid_device *hid) |
589 | { | |
590 | struct usbhid_device *usbhid = hid->driver_data; | |
25914662 | 591 | |
1d1bdd20 JS |
592 | if (!wait_event_timeout(usbhid->wait, |
593 | (!test_bit(HID_CTRL_RUNNING, &usbhid->iofl) && | |
594 | !test_bit(HID_OUT_RUNNING, &usbhid->iofl)), | |
48b4554a | 595 | 10*HZ)) { |
58037eb9 | 596 | dbg_hid("timeout waiting for ctrl or out queue to clear\n"); |
48b4554a JK |
597 | return -1; |
598 | } | |
1da177e4 | 599 | |
48b4554a JK |
600 | return 0; |
601 | } | |
53880546 | 602 | |
48b4554a JK |
603 | static int hid_set_idle(struct usb_device *dev, int ifnum, int report, int idle) |
604 | { | |
605 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
606 | HID_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE, (idle << 8) | report, | |
607 | ifnum, NULL, 0, USB_CTRL_SET_TIMEOUT); | |
608 | } | |
1da177e4 | 609 | |
48b4554a JK |
610 | static int hid_get_class_descriptor(struct usb_device *dev, int ifnum, |
611 | unsigned char type, void *buf, int size) | |
612 | { | |
613 | int result, retries = 4; | |
1da177e4 | 614 | |
48b4554a | 615 | memset(buf, 0, size); |
1da177e4 | 616 | |
48b4554a JK |
617 | do { |
618 | result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), | |
619 | USB_REQ_GET_DESCRIPTOR, USB_RECIP_INTERFACE | USB_DIR_IN, | |
620 | (type << 8), ifnum, buf, size, USB_CTRL_GET_TIMEOUT); | |
621 | retries--; | |
622 | } while (result < size && retries); | |
623 | return result; | |
624 | } | |
940824b0 | 625 | |
48b4554a JK |
626 | int usbhid_open(struct hid_device *hid) |
627 | { | |
933e3187 ON |
628 | struct usbhid_device *usbhid = hid->driver_data; |
629 | int res; | |
630 | ||
0361a28d | 631 | mutex_lock(&hid_open_mut); |
933e3187 ON |
632 | if (!hid->open++) { |
633 | res = usb_autopm_get_interface(usbhid->intf); | |
0361a28d | 634 | /* the device must be awake to reliable request remote wakeup */ |
933e3187 ON |
635 | if (res < 0) { |
636 | hid->open--; | |
0361a28d | 637 | mutex_unlock(&hid_open_mut); |
933e3187 ON |
638 | return -EIO; |
639 | } | |
0361a28d ON |
640 | usbhid->intf->needs_remote_wakeup = 1; |
641 | if (hid_start_in(hid)) | |
642 | hid_io_error(hid); | |
643 | ||
644 | usb_autopm_put_interface(usbhid->intf); | |
933e3187 | 645 | } |
0361a28d | 646 | mutex_unlock(&hid_open_mut); |
48b4554a JK |
647 | return 0; |
648 | } | |
a417a21e | 649 | |
48b4554a JK |
650 | void usbhid_close(struct hid_device *hid) |
651 | { | |
652 | struct usbhid_device *usbhid = hid->driver_data; | |
eab9edd2 | 653 | |
0361a28d ON |
654 | mutex_lock(&hid_open_mut); |
655 | ||
656 | /* protecting hid->open to make sure we don't restart | |
657 | * data acquistion due to a resumption we no longer | |
658 | * care about | |
659 | */ | |
660 | spin_lock_irq(&usbhid->lock); | |
933e3187 | 661 | if (!--hid->open) { |
0361a28d | 662 | spin_unlock_irq(&usbhid->lock); |
89092ddd | 663 | hid_cancel_delayed_stuff(usbhid); |
48b4554a | 664 | usb_kill_urb(usbhid->urbin); |
0361a28d ON |
665 | usbhid->intf->needs_remote_wakeup = 0; |
666 | } else { | |
667 | spin_unlock_irq(&usbhid->lock); | |
933e3187 | 668 | } |
0361a28d | 669 | mutex_unlock(&hid_open_mut); |
48b4554a | 670 | } |
1d3e2023 | 671 | |
48b4554a JK |
672 | /* |
673 | * Initialize all reports | |
674 | */ | |
41ad5fba | 675 | |
48b4554a JK |
676 | void usbhid_init_reports(struct hid_device *hid) |
677 | { | |
678 | struct hid_report *report; | |
679 | struct usbhid_device *usbhid = hid->driver_data; | |
680 | int err, ret; | |
41ad5fba | 681 | |
48b4554a JK |
682 | list_for_each_entry(report, &hid->report_enum[HID_INPUT_REPORT].report_list, list) |
683 | usbhid_submit_report(hid, report, USB_DIR_IN); | |
5556feae | 684 | |
48b4554a JK |
685 | list_for_each_entry(report, &hid->report_enum[HID_FEATURE_REPORT].report_list, list) |
686 | usbhid_submit_report(hid, report, USB_DIR_IN); | |
4a1a4d8b | 687 | |
48b4554a JK |
688 | err = 0; |
689 | ret = usbhid_wait_io(hid); | |
690 | while (ret) { | |
691 | err |= ret; | |
692 | if (test_bit(HID_CTRL_RUNNING, &usbhid->iofl)) | |
693 | usb_kill_urb(usbhid->urbctrl); | |
694 | if (test_bit(HID_OUT_RUNNING, &usbhid->iofl)) | |
695 | usb_kill_urb(usbhid->urbout); | |
696 | ret = usbhid_wait_io(hid); | |
697 | } | |
3f9b4076 | 698 | |
48b4554a | 699 | if (err) |
7d89fe12 | 700 | dev_warn(&hid->dev, "timeout initializing reports\n"); |
48b4554a | 701 | } |
1da177e4 | 702 | |
713c8aad PZ |
703 | /* |
704 | * Reset LEDs which BIOS might have left on. For now, just NumLock (0x01). | |
705 | */ | |
706 | static int hid_find_field_early(struct hid_device *hid, unsigned int page, | |
707 | unsigned int hid_code, struct hid_field **pfield) | |
708 | { | |
709 | struct hid_report *report; | |
710 | struct hid_field *field; | |
711 | struct hid_usage *usage; | |
712 | int i, j; | |
713 | ||
714 | list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) { | |
715 | for (i = 0; i < report->maxfield; i++) { | |
716 | field = report->field[i]; | |
717 | for (j = 0; j < field->maxusage; j++) { | |
718 | usage = &field->usage[j]; | |
719 | if ((usage->hid & HID_USAGE_PAGE) == page && | |
720 | (usage->hid & 0xFFFF) == hid_code) { | |
721 | *pfield = field; | |
722 | return j; | |
723 | } | |
724 | } | |
725 | } | |
726 | } | |
727 | return -1; | |
728 | } | |
729 | ||
6edfa8dc | 730 | void usbhid_set_leds(struct hid_device *hid) |
713c8aad PZ |
731 | { |
732 | struct hid_field *field; | |
733 | int offset; | |
734 | ||
735 | if ((offset = hid_find_field_early(hid, HID_UP_LED, 0x01, &field)) != -1) { | |
736 | hid_set_field(field, offset, 0); | |
737 | usbhid_submit_report(hid, field->report, USB_DIR_OUT); | |
738 | } | |
739 | } | |
6edfa8dc | 740 | EXPORT_SYMBOL_GPL(usbhid_set_leds); |
713c8aad | 741 | |
bf0964dc MH |
742 | /* |
743 | * Traverse the supplied list of reports and find the longest | |
744 | */ | |
282bfd4c JS |
745 | static void hid_find_max_report(struct hid_device *hid, unsigned int type, |
746 | unsigned int *max) | |
bf0964dc MH |
747 | { |
748 | struct hid_report *report; | |
282bfd4c | 749 | unsigned int size; |
bf0964dc MH |
750 | |
751 | list_for_each_entry(report, &hid->report_enum[type].report_list, list) { | |
efc7ce18 | 752 | size = ((report->size - 1) >> 3) + 1 + hid->report_enum[type].numbered; |
bf0964dc MH |
753 | if (*max < size) |
754 | *max = size; | |
755 | } | |
756 | } | |
757 | ||
1da177e4 LT |
758 | static int hid_alloc_buffers(struct usb_device *dev, struct hid_device *hid) |
759 | { | |
4916b3a5 JK |
760 | struct usbhid_device *usbhid = hid->driver_data; |
761 | ||
898089d0 JS |
762 | usbhid->inbuf = usb_buffer_alloc(dev, usbhid->bufsize, GFP_KERNEL, |
763 | &usbhid->inbuf_dma); | |
764 | usbhid->outbuf = usb_buffer_alloc(dev, usbhid->bufsize, GFP_KERNEL, | |
765 | &usbhid->outbuf_dma); | |
766 | usbhid->cr = usb_buffer_alloc(dev, sizeof(*usbhid->cr), GFP_KERNEL, | |
767 | &usbhid->cr_dma); | |
768 | usbhid->ctrlbuf = usb_buffer_alloc(dev, usbhid->bufsize, GFP_KERNEL, | |
769 | &usbhid->ctrlbuf_dma); | |
770 | if (!usbhid->inbuf || !usbhid->outbuf || !usbhid->cr || | |
771 | !usbhid->ctrlbuf) | |
1da177e4 LT |
772 | return -1; |
773 | ||
774 | return 0; | |
775 | } | |
776 | ||
efc493f9 JK |
777 | static int usbhid_output_raw_report(struct hid_device *hid, __u8 *buf, size_t count) |
778 | { | |
779 | struct usbhid_device *usbhid = hid->driver_data; | |
780 | struct usb_device *dev = hid_to_usb_dev(hid); | |
781 | struct usb_interface *intf = usbhid->intf; | |
782 | struct usb_host_interface *interface = intf->cur_altsetting; | |
783 | int ret; | |
784 | ||
785 | ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
786 | HID_REQ_SET_REPORT, | |
787 | USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE, | |
01d7b369 | 788 | ((HID_OUTPUT_REPORT + 1) << 8) | *buf, |
efc493f9 JK |
789 | interface->desc.bInterfaceNumber, buf + 1, count - 1, |
790 | USB_CTRL_SET_TIMEOUT); | |
791 | ||
792 | /* count also the report id */ | |
793 | if (ret > 0) | |
794 | ret++; | |
795 | ||
796 | return ret; | |
797 | } | |
798 | ||
0361a28d ON |
799 | static void usbhid_restart_queues(struct usbhid_device *usbhid) |
800 | { | |
801 | if (usbhid->urbout) | |
802 | usbhid_restart_out_queue(usbhid); | |
803 | usbhid_restart_ctrl_queue(usbhid); | |
804 | } | |
805 | ||
806 | static void __usbhid_restart_queues(struct work_struct *work) | |
807 | { | |
808 | struct usbhid_device *usbhid = | |
809 | container_of(work, struct usbhid_device, restart_work); | |
810 | int r; | |
811 | ||
812 | r = usb_autopm_get_interface(usbhid->intf); | |
813 | if (r < 0) | |
814 | return; | |
815 | usb_autopm_put_interface(usbhid->intf); | |
816 | } | |
817 | ||
1da177e4 LT |
818 | static void hid_free_buffers(struct usb_device *dev, struct hid_device *hid) |
819 | { | |
4916b3a5 JK |
820 | struct usbhid_device *usbhid = hid->driver_data; |
821 | ||
6675c5bd DT |
822 | usb_buffer_free(dev, usbhid->bufsize, usbhid->inbuf, usbhid->inbuf_dma); |
823 | usb_buffer_free(dev, usbhid->bufsize, usbhid->outbuf, usbhid->outbuf_dma); | |
824 | usb_buffer_free(dev, sizeof(*(usbhid->cr)), usbhid->cr, usbhid->cr_dma); | |
825 | usb_buffer_free(dev, usbhid->bufsize, usbhid->ctrlbuf, usbhid->ctrlbuf_dma); | |
1da177e4 LT |
826 | } |
827 | ||
c500c971 JS |
828 | static int usbhid_parse(struct hid_device *hid) |
829 | { | |
830 | struct usb_interface *intf = to_usb_interface(hid->dev.parent); | |
1da177e4 LT |
831 | struct usb_host_interface *interface = intf->cur_altsetting; |
832 | struct usb_device *dev = interface_to_usbdev (intf); | |
833 | struct hid_descriptor *hdesc; | |
2eb5dc30 | 834 | u32 quirks = 0; |
c500c971 | 835 | unsigned int rsize = 0; |
c5b7c7c3 | 836 | char *rdesc; |
c500c971 | 837 | int ret, n; |
1da177e4 | 838 | |
2eb5dc30 PW |
839 | quirks = usbhid_lookup_quirk(le16_to_cpu(dev->descriptor.idVendor), |
840 | le16_to_cpu(dev->descriptor.idProduct)); | |
1da177e4 | 841 | |
6f4303fb JK |
842 | if (quirks & HID_QUIRK_IGNORE) |
843 | return -ENODEV; | |
844 | ||
0f28b55d AS |
845 | /* Many keyboards and mice don't like to be polled for reports, |
846 | * so we will always set the HID_QUIRK_NOGET flag for them. */ | |
847 | if (interface->desc.bInterfaceSubClass == USB_INTERFACE_SUBCLASS_BOOT) { | |
848 | if (interface->desc.bInterfaceProtocol == USB_INTERFACE_PROTOCOL_KEYBOARD || | |
849 | interface->desc.bInterfaceProtocol == USB_INTERFACE_PROTOCOL_MOUSE) | |
850 | quirks |= HID_QUIRK_NOGET; | |
851 | } | |
852 | ||
c5b7c7c3 DT |
853 | if (usb_get_extra_descriptor(interface, HID_DT_HID, &hdesc) && |
854 | (!interface->desc.bNumEndpoints || | |
855 | usb_get_extra_descriptor(&interface->endpoint[0], HID_DT_HID, &hdesc))) { | |
58037eb9 | 856 | dbg_hid("class descriptor not present\n"); |
c500c971 | 857 | return -ENODEV; |
1da177e4 LT |
858 | } |
859 | ||
c500c971 JS |
860 | hid->version = le16_to_cpu(hdesc->bcdHID); |
861 | hid->country = hdesc->bCountryCode; | |
862 | ||
1da177e4 LT |
863 | for (n = 0; n < hdesc->bNumDescriptors; n++) |
864 | if (hdesc->desc[n].bDescriptorType == HID_DT_REPORT) | |
865 | rsize = le16_to_cpu(hdesc->desc[n].wDescriptorLength); | |
866 | ||
867 | if (!rsize || rsize > HID_MAX_DESCRIPTOR_SIZE) { | |
58037eb9 | 868 | dbg_hid("weird size of report descriptor (%u)\n", rsize); |
c500c971 | 869 | return -EINVAL; |
1da177e4 LT |
870 | } |
871 | ||
872 | if (!(rdesc = kmalloc(rsize, GFP_KERNEL))) { | |
58037eb9 | 873 | dbg_hid("couldn't allocate rdesc memory\n"); |
c500c971 | 874 | return -ENOMEM; |
1da177e4 LT |
875 | } |
876 | ||
854561b0 VP |
877 | hid_set_idle(dev, interface->desc.bInterfaceNumber, 0, 0); |
878 | ||
c500c971 JS |
879 | ret = hid_get_class_descriptor(dev, interface->desc.bInterfaceNumber, |
880 | HID_DT_REPORT, rdesc, rsize); | |
881 | if (ret < 0) { | |
58037eb9 | 882 | dbg_hid("reading report descriptor failed\n"); |
1da177e4 | 883 | kfree(rdesc); |
c500c971 | 884 | goto err; |
1da177e4 LT |
885 | } |
886 | ||
c500c971 JS |
887 | ret = hid_parse_report(hid, rdesc, rsize); |
888 | kfree(rdesc); | |
889 | if (ret) { | |
58037eb9 | 890 | dbg_hid("parsing report descriptor failed\n"); |
c500c971 | 891 | goto err; |
1da177e4 LT |
892 | } |
893 | ||
f5208997 | 894 | hid->quirks |= quirks; |
1da177e4 | 895 | |
c500c971 JS |
896 | return 0; |
897 | err: | |
898 | return ret; | |
899 | } | |
900 | ||
901 | static int usbhid_start(struct hid_device *hid) | |
902 | { | |
903 | struct usb_interface *intf = to_usb_interface(hid->dev.parent); | |
904 | struct usb_host_interface *interface = intf->cur_altsetting; | |
905 | struct usb_device *dev = interface_to_usbdev(intf); | |
3d5afd32 | 906 | struct usbhid_device *usbhid = hid->driver_data; |
c500c971 JS |
907 | unsigned int n, insize = 0; |
908 | int ret; | |
909 | ||
e3e14de5 JS |
910 | clear_bit(HID_DISCONNECTED, &usbhid->iofl); |
911 | ||
4916b3a5 JK |
912 | usbhid->bufsize = HID_MIN_BUFFER_SIZE; |
913 | hid_find_max_report(hid, HID_INPUT_REPORT, &usbhid->bufsize); | |
914 | hid_find_max_report(hid, HID_OUTPUT_REPORT, &usbhid->bufsize); | |
915 | hid_find_max_report(hid, HID_FEATURE_REPORT, &usbhid->bufsize); | |
bf0964dc | 916 | |
4916b3a5 JK |
917 | if (usbhid->bufsize > HID_MAX_BUFFER_SIZE) |
918 | usbhid->bufsize = HID_MAX_BUFFER_SIZE; | |
bf0964dc MH |
919 | |
920 | hid_find_max_report(hid, HID_INPUT_REPORT, &insize); | |
921 | ||
922 | if (insize > HID_MAX_BUFFER_SIZE) | |
923 | insize = HID_MAX_BUFFER_SIZE; | |
924 | ||
c500c971 JS |
925 | if (hid_alloc_buffers(dev, hid)) { |
926 | ret = -ENOMEM; | |
1da177e4 | 927 | goto fail; |
f345c37c PS |
928 | } |
929 | ||
1da177e4 | 930 | for (n = 0; n < interface->desc.bNumEndpoints; n++) { |
1da177e4 LT |
931 | struct usb_endpoint_descriptor *endpoint; |
932 | int pipe; | |
933 | int interval; | |
934 | ||
935 | endpoint = &interface->endpoint[n].desc; | |
581a2739 | 936 | if (!usb_endpoint_xfer_int(endpoint)) |
1da177e4 LT |
937 | continue; |
938 | ||
1da177e4 | 939 | interval = endpoint->bInterval; |
1da177e4 | 940 | |
f345c37c | 941 | /* Some vendors give fullspeed interval on highspeed devides */ |
c500c971 | 942 | if (hid->quirks & HID_QUIRK_FULLSPEED_INTERVAL && |
f345c37c PS |
943 | dev->speed == USB_SPEED_HIGH) { |
944 | interval = fls(endpoint->bInterval*8); | |
945 | printk(KERN_INFO "%s: Fixing fullspeed to highspeed interval: %d -> %d\n", | |
946 | hid->name, endpoint->bInterval, interval); | |
947 | } | |
948 | ||
1da177e4 LT |
949 | /* Change the polling interval of mice. */ |
950 | if (hid->collection->usage == HID_GD_MOUSE && hid_mousepoll_interval > 0) | |
951 | interval = hid_mousepoll_interval; | |
05f091ab | 952 | |
c500c971 | 953 | ret = -ENOMEM; |
0f12aa03 | 954 | if (usb_endpoint_dir_in(endpoint)) { |
4916b3a5 | 955 | if (usbhid->urbin) |
1da177e4 | 956 | continue; |
4916b3a5 | 957 | if (!(usbhid->urbin = usb_alloc_urb(0, GFP_KERNEL))) |
1da177e4 LT |
958 | goto fail; |
959 | pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress); | |
4916b3a5 | 960 | usb_fill_int_urb(usbhid->urbin, dev, pipe, usbhid->inbuf, insize, |
1da177e4 | 961 | hid_irq_in, hid, interval); |
4916b3a5 JK |
962 | usbhid->urbin->transfer_dma = usbhid->inbuf_dma; |
963 | usbhid->urbin->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
1da177e4 | 964 | } else { |
4916b3a5 | 965 | if (usbhid->urbout) |
1da177e4 | 966 | continue; |
4916b3a5 | 967 | if (!(usbhid->urbout = usb_alloc_urb(0, GFP_KERNEL))) |
1da177e4 LT |
968 | goto fail; |
969 | pipe = usb_sndintpipe(dev, endpoint->bEndpointAddress); | |
4916b3a5 | 970 | usb_fill_int_urb(usbhid->urbout, dev, pipe, usbhid->outbuf, 0, |
1da177e4 | 971 | hid_irq_out, hid, interval); |
4916b3a5 JK |
972 | usbhid->urbout->transfer_dma = usbhid->outbuf_dma; |
973 | usbhid->urbout->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
1da177e4 LT |
974 | } |
975 | } | |
976 | ||
1d1bdd20 | 977 | init_waitqueue_head(&usbhid->wait); |
4916b3a5 | 978 | INIT_WORK(&usbhid->reset_work, hid_reset); |
0361a28d | 979 | INIT_WORK(&usbhid->restart_work, __usbhid_restart_queues); |
4916b3a5 | 980 | setup_timer(&usbhid->io_retry, hid_retry_timeout, (unsigned long) hid); |
aef4e266 | 981 | |
0361a28d | 982 | spin_lock_init(&usbhid->lock); |
1da177e4 | 983 | |
4916b3a5 JK |
984 | usbhid->intf = intf; |
985 | usbhid->ifnum = interface->desc.bInterfaceNumber; | |
1da177e4 | 986 | |
4916b3a5 | 987 | usbhid->urbctrl = usb_alloc_urb(0, GFP_KERNEL); |
c500c971 JS |
988 | if (!usbhid->urbctrl) { |
989 | ret = -ENOMEM; | |
1da177e4 | 990 | goto fail; |
c500c971 | 991 | } |
c5b7c7c3 | 992 | |
4916b3a5 JK |
993 | usb_fill_control_urb(usbhid->urbctrl, dev, 0, (void *) usbhid->cr, |
994 | usbhid->ctrlbuf, 1, hid_ctrl, hid); | |
995 | usbhid->urbctrl->setup_dma = usbhid->cr_dma; | |
996 | usbhid->urbctrl->transfer_dma = usbhid->ctrlbuf_dma; | |
997 | usbhid->urbctrl->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP | URB_NO_SETUP_DMA_MAP); | |
c500c971 | 998 | |
5b915d9e JK |
999 | if (!(hid->quirks & HID_QUIRK_NO_INIT_REPORTS)) |
1000 | usbhid_init_reports(hid); | |
93c10132 | 1001 | |
3d5afd32 | 1002 | set_bit(HID_STARTED, &usbhid->iofl); |
3d5afd32 | 1003 | |
08ef08ee AS |
1004 | /* Some keyboards don't work until their LEDs have been set. |
1005 | * Since BIOSes do set the LEDs, it must be safe for any device | |
1006 | * that supports the keyboard boot protocol. | |
1007 | */ | |
1008 | if (interface->desc.bInterfaceSubClass == USB_INTERFACE_SUBCLASS_BOOT && | |
1009 | interface->desc.bInterfaceProtocol == | |
1010 | USB_INTERFACE_PROTOCOL_KEYBOARD) | |
1011 | usbhid_set_leds(hid); | |
1012 | ||
c500c971 | 1013 | return 0; |
1da177e4 LT |
1014 | |
1015 | fail: | |
4916b3a5 JK |
1016 | usb_free_urb(usbhid->urbin); |
1017 | usb_free_urb(usbhid->urbout); | |
1018 | usb_free_urb(usbhid->urbctrl); | |
e3e14de5 JS |
1019 | usbhid->urbin = NULL; |
1020 | usbhid->urbout = NULL; | |
1021 | usbhid->urbctrl = NULL; | |
22f675f3 | 1022 | hid_free_buffers(dev, hid); |
c500c971 | 1023 | return ret; |
1da177e4 LT |
1024 | } |
1025 | ||
c500c971 | 1026 | static void usbhid_stop(struct hid_device *hid) |
1da177e4 | 1027 | { |
c500c971 | 1028 | struct usbhid_device *usbhid = hid->driver_data; |
1da177e4 | 1029 | |
c500c971 | 1030 | if (WARN_ON(!usbhid)) |
1da177e4 LT |
1031 | return; |
1032 | ||
3d5afd32 | 1033 | clear_bit(HID_STARTED, &usbhid->iofl); |
0361a28d | 1034 | spin_lock_irq(&usbhid->lock); /* Sync with error handler */ |
69626f23 | 1035 | set_bit(HID_DISCONNECTED, &usbhid->iofl); |
0361a28d | 1036 | spin_unlock_irq(&usbhid->lock); |
4916b3a5 JK |
1037 | usb_kill_urb(usbhid->urbin); |
1038 | usb_kill_urb(usbhid->urbout); | |
1039 | usb_kill_urb(usbhid->urbctrl); | |
1da177e4 | 1040 | |
0361a28d | 1041 | hid_cancel_delayed_stuff(usbhid); |
aef4e266 | 1042 | |
c500c971 JS |
1043 | hid->claimed = 0; |
1044 | ||
4916b3a5 JK |
1045 | usb_free_urb(usbhid->urbin); |
1046 | usb_free_urb(usbhid->urbctrl); | |
1047 | usb_free_urb(usbhid->urbout); | |
e3e14de5 JS |
1048 | usbhid->urbin = NULL; /* don't mess up next start */ |
1049 | usbhid->urbctrl = NULL; | |
1050 | usbhid->urbout = NULL; | |
1da177e4 | 1051 | |
be820975 | 1052 | hid_free_buffers(hid_to_usb_dev(hid), hid); |
1da177e4 LT |
1053 | } |
1054 | ||
0361a28d ON |
1055 | static int usbhid_power(struct hid_device *hid, int lvl) |
1056 | { | |
1057 | int r = 0; | |
1058 | ||
1059 | switch (lvl) { | |
1060 | case PM_HINT_FULLON: | |
1061 | r = usbhid_get_power(hid); | |
1062 | break; | |
1063 | case PM_HINT_NORMAL: | |
1064 | usbhid_put_power(hid); | |
1065 | break; | |
1066 | } | |
1067 | return r; | |
1068 | } | |
1069 | ||
c500c971 JS |
1070 | static struct hid_ll_driver usb_hid_driver = { |
1071 | .parse = usbhid_parse, | |
1072 | .start = usbhid_start, | |
1073 | .stop = usbhid_stop, | |
1074 | .open = usbhid_open, | |
1075 | .close = usbhid_close, | |
0361a28d | 1076 | .power = usbhid_power, |
c500c971 JS |
1077 | .hidinput_input_event = usb_hidinput_input_event, |
1078 | }; | |
1079 | ||
c4c259bc | 1080 | static int usbhid_probe(struct usb_interface *intf, const struct usb_device_id *id) |
1da177e4 | 1081 | { |
131d3a7a | 1082 | struct usb_host_interface *interface = intf->cur_altsetting; |
c500c971 | 1083 | struct usb_device *dev = interface_to_usbdev(intf); |
3d5afd32 | 1084 | struct usbhid_device *usbhid; |
1da177e4 | 1085 | struct hid_device *hid; |
131d3a7a | 1086 | unsigned int n, has_in = 0; |
c500c971 JS |
1087 | size_t len; |
1088 | int ret; | |
1da177e4 | 1089 | |
58037eb9 | 1090 | dbg_hid("HID probe called for ifnum %d\n", |
1da177e4 LT |
1091 | intf->altsetting->desc.bInterfaceNumber); |
1092 | ||
131d3a7a JS |
1093 | for (n = 0; n < interface->desc.bNumEndpoints; n++) |
1094 | if (usb_endpoint_is_int_in(&interface->endpoint[n].desc)) | |
1095 | has_in++; | |
1096 | if (!has_in) { | |
1097 | dev_err(&intf->dev, "couldn't find an input interrupt " | |
1098 | "endpoint\n"); | |
1099 | return -ENODEV; | |
1100 | } | |
1101 | ||
c500c971 JS |
1102 | hid = hid_allocate_device(); |
1103 | if (IS_ERR(hid)) | |
1104 | return PTR_ERR(hid); | |
1da177e4 LT |
1105 | |
1106 | usb_set_intfdata(intf, hid); | |
c500c971 JS |
1107 | hid->ll_driver = &usb_hid_driver; |
1108 | hid->hid_output_raw_report = usbhid_output_raw_report; | |
76483cf4 | 1109 | hid->ff_init = hid_pidff_init; |
c500c971 | 1110 | #ifdef CONFIG_USB_HIDDEV |
93c10132 | 1111 | hid->hiddev_connect = hiddev_connect; |
c4c259bc | 1112 | hid->hiddev_disconnect = hiddev_disconnect; |
c500c971 JS |
1113 | hid->hiddev_hid_event = hiddev_hid_event; |
1114 | hid->hiddev_report_event = hiddev_report_event; | |
1115 | #endif | |
1116 | hid->dev.parent = &intf->dev; | |
1117 | hid->bus = BUS_USB; | |
1118 | hid->vendor = le16_to_cpu(dev->descriptor.idVendor); | |
1119 | hid->product = le16_to_cpu(dev->descriptor.idProduct); | |
1120 | hid->name[0] = 0; | |
a73a6370 JS |
1121 | if (intf->cur_altsetting->desc.bInterfaceProtocol == |
1122 | USB_INTERFACE_PROTOCOL_MOUSE) | |
1123 | hid->type = HID_TYPE_USBMOUSE; | |
1da177e4 | 1124 | |
c500c971 JS |
1125 | if (dev->manufacturer) |
1126 | strlcpy(hid->name, dev->manufacturer, sizeof(hid->name)); | |
1da177e4 | 1127 | |
c500c971 JS |
1128 | if (dev->product) { |
1129 | if (dev->manufacturer) | |
1130 | strlcat(hid->name, " ", sizeof(hid->name)); | |
1131 | strlcat(hid->name, dev->product, sizeof(hid->name)); | |
1da177e4 LT |
1132 | } |
1133 | ||
c500c971 JS |
1134 | if (!strlen(hid->name)) |
1135 | snprintf(hid->name, sizeof(hid->name), "HID %04x:%04x", | |
1136 | le16_to_cpu(dev->descriptor.idVendor), | |
1137 | le16_to_cpu(dev->descriptor.idProduct)); | |
1da177e4 | 1138 | |
c500c971 JS |
1139 | usb_make_path(dev, hid->phys, sizeof(hid->phys)); |
1140 | strlcat(hid->phys, "/input", sizeof(hid->phys)); | |
1141 | len = strlen(hid->phys); | |
1142 | if (len < sizeof(hid->phys) - 1) | |
1143 | snprintf(hid->phys + len, sizeof(hid->phys) - len, | |
1144 | "%d", intf->altsetting[0].desc.bInterfaceNumber); | |
1145 | ||
1146 | if (usb_string(dev, dev->descriptor.iSerialNumber, hid->uniq, 64) <= 0) | |
1147 | hid->uniq[0] = 0; | |
1da177e4 | 1148 | |
3d5afd32 JS |
1149 | usbhid = kzalloc(sizeof(*usbhid), GFP_KERNEL); |
1150 | if (usbhid == NULL) { | |
1151 | ret = -ENOMEM; | |
1152 | goto err; | |
1153 | } | |
1154 | ||
1155 | hid->driver_data = usbhid; | |
1156 | usbhid->hid = hid; | |
3d5afd32 | 1157 | |
85cdaf52 JS |
1158 | ret = hid_add_device(hid); |
1159 | if (ret) { | |
d458a9df JS |
1160 | if (ret != -ENODEV) |
1161 | dev_err(&intf->dev, "can't add hid device: %d\n", ret); | |
3d5afd32 | 1162 | goto err_free; |
85cdaf52 | 1163 | } |
c500c971 JS |
1164 | |
1165 | return 0; | |
3d5afd32 JS |
1166 | err_free: |
1167 | kfree(usbhid); | |
c500c971 JS |
1168 | err: |
1169 | hid_destroy_device(hid); | |
85cdaf52 | 1170 | return ret; |
1da177e4 LT |
1171 | } |
1172 | ||
c4c259bc | 1173 | static void usbhid_disconnect(struct usb_interface *intf) |
c500c971 JS |
1174 | { |
1175 | struct hid_device *hid = usb_get_intfdata(intf); | |
3d5afd32 | 1176 | struct usbhid_device *usbhid; |
c500c971 JS |
1177 | |
1178 | if (WARN_ON(!hid)) | |
1179 | return; | |
1180 | ||
3d5afd32 | 1181 | usbhid = hid->driver_data; |
c500c971 | 1182 | hid_destroy_device(hid); |
3d5afd32 | 1183 | kfree(usbhid); |
c500c971 JS |
1184 | } |
1185 | ||
0361a28d ON |
1186 | static void hid_cancel_delayed_stuff(struct usbhid_device *usbhid) |
1187 | { | |
1188 | del_timer_sync(&usbhid->io_retry); | |
1189 | cancel_work_sync(&usbhid->restart_work); | |
1190 | cancel_work_sync(&usbhid->reset_work); | |
1191 | } | |
1192 | ||
1193 | static void hid_cease_io(struct usbhid_device *usbhid) | |
1194 | { | |
1195 | del_timer(&usbhid->io_retry); | |
1196 | usb_kill_urb(usbhid->urbin); | |
1197 | usb_kill_urb(usbhid->urbctrl); | |
1198 | usb_kill_urb(usbhid->urbout); | |
0361a28d ON |
1199 | } |
1200 | ||
ae2f0074 JK |
1201 | /* Treat USB reset pretty much the same as suspend/resume */ |
1202 | static int hid_pre_reset(struct usb_interface *intf) | |
1203 | { | |
1204 | struct hid_device *hid = usb_get_intfdata(intf); | |
1205 | struct usbhid_device *usbhid = hid->driver_data; | |
1206 | ||
1207 | spin_lock_irq(&usbhid->lock); | |
1208 | set_bit(HID_RESET_PENDING, &usbhid->iofl); | |
1209 | spin_unlock_irq(&usbhid->lock); | |
6d779768 | 1210 | cancel_work_sync(&usbhid->restart_work); |
ae2f0074 JK |
1211 | hid_cease_io(usbhid); |
1212 | ||
1213 | return 0; | |
1214 | } | |
1215 | ||
1216 | /* Same routine used for post_reset and reset_resume */ | |
1217 | static int hid_post_reset(struct usb_interface *intf) | |
1218 | { | |
1219 | struct usb_device *dev = interface_to_usbdev (intf); | |
1220 | struct hid_device *hid = usb_get_intfdata(intf); | |
1221 | struct usbhid_device *usbhid = hid->driver_data; | |
1222 | int status; | |
70fa9f2e | 1223 | |
ae2f0074 JK |
1224 | spin_lock_irq(&usbhid->lock); |
1225 | clear_bit(HID_RESET_PENDING, &usbhid->iofl); | |
1226 | spin_unlock_irq(&usbhid->lock); | |
1227 | hid_set_idle(dev, intf->cur_altsetting->desc.bInterfaceNumber, 0, 0); | |
ae2f0074 JK |
1228 | status = hid_start_in(hid); |
1229 | if (status < 0) | |
1230 | hid_io_error(hid); | |
1231 | usbhid_restart_queues(usbhid); | |
1232 | ||
1233 | return 0; | |
1234 | } | |
1235 | ||
1236 | int usbhid_get_power(struct hid_device *hid) | |
1237 | { | |
1238 | struct usbhid_device *usbhid = hid->driver_data; | |
70fa9f2e | 1239 | |
ae2f0074 JK |
1240 | return usb_autopm_get_interface(usbhid->intf); |
1241 | } | |
1242 | ||
1243 | void usbhid_put_power(struct hid_device *hid) | |
1244 | { | |
1245 | struct usbhid_device *usbhid = hid->driver_data; | |
70fa9f2e | 1246 | |
ae2f0074 JK |
1247 | usb_autopm_put_interface(usbhid->intf); |
1248 | } | |
1249 | ||
1250 | ||
0f6f1407 | 1251 | #ifdef CONFIG_PM |
27d72e85 | 1252 | static int hid_suspend(struct usb_interface *intf, pm_message_t message) |
1da177e4 | 1253 | { |
0361a28d | 1254 | struct hid_device *hid = usb_get_intfdata(intf); |
4916b3a5 | 1255 | struct usbhid_device *usbhid = hid->driver_data; |
0361a28d | 1256 | int status; |
1da177e4 | 1257 | |
fb34d537 | 1258 | if (message.event & PM_EVENT_AUTO) { |
0361a28d ON |
1259 | spin_lock_irq(&usbhid->lock); /* Sync with error handler */ |
1260 | if (!test_bit(HID_RESET_PENDING, &usbhid->iofl) | |
1261 | && !test_bit(HID_CLEAR_HALT, &usbhid->iofl) | |
1262 | && !test_bit(HID_OUT_RUNNING, &usbhid->iofl) | |
1263 | && !test_bit(HID_CTRL_RUNNING, &usbhid->iofl) | |
1264 | && !test_bit(HID_KEYS_PRESSED, &usbhid->iofl) | |
1265 | && (!usbhid->ledcount || ignoreled)) | |
1266 | { | |
1267 | set_bit(HID_REPORTED_IDLE, &usbhid->iofl); | |
1268 | spin_unlock_irq(&usbhid->lock); | |
1269 | } else { | |
1270 | usbhid_mark_busy(usbhid); | |
1271 | spin_unlock_irq(&usbhid->lock); | |
1272 | return -EBUSY; | |
1273 | } | |
3d5afd32 | 1274 | |
0361a28d ON |
1275 | } else { |
1276 | spin_lock_irq(&usbhid->lock); | |
1277 | set_bit(HID_REPORTED_IDLE, &usbhid->iofl); | |
1278 | spin_unlock_irq(&usbhid->lock); | |
1279 | if (usbhid_wait_io(hid) < 0) | |
1280 | return -EIO; | |
1281 | } | |
1282 | ||
fb34d537 | 1283 | if (!ignoreled && (message.event & PM_EVENT_AUTO)) { |
0361a28d ON |
1284 | spin_lock_irq(&usbhid->lock); |
1285 | if (test_bit(HID_LED_ON, &usbhid->iofl)) { | |
1286 | spin_unlock_irq(&usbhid->lock); | |
1287 | usbhid_mark_busy(usbhid); | |
1288 | return -EBUSY; | |
1289 | } | |
1290 | spin_unlock_irq(&usbhid->lock); | |
1291 | } | |
1292 | ||
1293 | hid_cancel_delayed_stuff(usbhid); | |
1294 | hid_cease_io(usbhid); | |
1295 | ||
fb34d537 AS |
1296 | if ((message.event & PM_EVENT_AUTO) && |
1297 | test_bit(HID_KEYS_PRESSED, &usbhid->iofl)) { | |
0361a28d ON |
1298 | /* lost race against keypresses */ |
1299 | status = hid_start_in(hid); | |
1300 | if (status < 0) | |
1301 | hid_io_error(hid); | |
1302 | usbhid_mark_busy(usbhid); | |
1303 | return -EBUSY; | |
1304 | } | |
1da177e4 LT |
1305 | dev_dbg(&intf->dev, "suspend\n"); |
1306 | return 0; | |
1307 | } | |
1308 | ||
1309 | static int hid_resume(struct usb_interface *intf) | |
1310 | { | |
1311 | struct hid_device *hid = usb_get_intfdata (intf); | |
4916b3a5 | 1312 | struct usbhid_device *usbhid = hid->driver_data; |
1da177e4 LT |
1313 | int status; |
1314 | ||
fde5be35 | 1315 | if (!test_bit(HID_STARTED, &usbhid->iofl)) |
3d5afd32 | 1316 | return 0; |
3d5afd32 | 1317 | |
0361a28d ON |
1318 | clear_bit(HID_REPORTED_IDLE, &usbhid->iofl); |
1319 | usbhid_mark_busy(usbhid); | |
1320 | ||
1321 | if (test_bit(HID_CLEAR_HALT, &usbhid->iofl) || | |
1322 | test_bit(HID_RESET_PENDING, &usbhid->iofl)) | |
1323 | schedule_work(&usbhid->reset_work); | |
4916b3a5 | 1324 | usbhid->retry_delay = 0; |
aef4e266 | 1325 | status = hid_start_in(hid); |
0361a28d ON |
1326 | if (status < 0) |
1327 | hid_io_error(hid); | |
1328 | usbhid_restart_queues(usbhid); | |
1da177e4 | 1329 | |
1da177e4 | 1330 | dev_dbg(&intf->dev, "resume status %d\n", status); |
f07600cf | 1331 | return 0; |
df9a1f48 AS |
1332 | } |
1333 | ||
378a0ede | 1334 | static int hid_reset_resume(struct usb_interface *intf) |
df9a1f48 | 1335 | { |
378a0ede ON |
1336 | struct hid_device *hid = usb_get_intfdata(intf); |
1337 | struct usbhid_device *usbhid = hid->driver_data; | |
df9a1f48 | 1338 | |
378a0ede ON |
1339 | clear_bit(HID_REPORTED_IDLE, &usbhid->iofl); |
1340 | return hid_post_reset(intf); | |
df9a1f48 AS |
1341 | } |
1342 | ||
ae2f0074 | 1343 | #endif /* CONFIG_PM */ |
df9a1f48 | 1344 | |
d67dec5b | 1345 | static const struct usb_device_id hid_usb_ids[] = { |
1da177e4 LT |
1346 | { .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS, |
1347 | .bInterfaceClass = USB_INTERFACE_CLASS_HID }, | |
1348 | { } /* Terminating entry */ | |
1349 | }; | |
1350 | ||
1351 | MODULE_DEVICE_TABLE (usb, hid_usb_ids); | |
1352 | ||
1353 | static struct usb_driver hid_driver = { | |
1da177e4 | 1354 | .name = "usbhid", |
c4c259bc JK |
1355 | .probe = usbhid_probe, |
1356 | .disconnect = usbhid_disconnect, | |
0f6f1407 | 1357 | #ifdef CONFIG_PM |
1da177e4 LT |
1358 | .suspend = hid_suspend, |
1359 | .resume = hid_resume, | |
378a0ede | 1360 | .reset_resume = hid_reset_resume, |
0f6f1407 | 1361 | #endif |
df9a1f48 AS |
1362 | .pre_reset = hid_pre_reset, |
1363 | .post_reset = hid_post_reset, | |
1da177e4 | 1364 | .id_table = hid_usb_ids, |
933e3187 | 1365 | .supports_autosuspend = 1, |
1da177e4 LT |
1366 | }; |
1367 | ||
85cdaf52 JS |
1368 | static const struct hid_device_id hid_usb_table[] = { |
1369 | { HID_USB_DEVICE(HID_ANY_ID, HID_ANY_ID) }, | |
1370 | { } | |
1371 | }; | |
1372 | ||
1373 | static struct hid_driver hid_usb_driver = { | |
1374 | .name = "generic-usb", | |
1375 | .id_table = hid_usb_table, | |
1376 | }; | |
1377 | ||
1da177e4 LT |
1378 | static int __init hid_init(void) |
1379 | { | |
0361a28d ON |
1380 | int retval = -ENOMEM; |
1381 | ||
1382 | resumption_waker = create_freezeable_workqueue("usbhid_resumer"); | |
1383 | if (!resumption_waker) | |
1384 | goto no_queue; | |
85cdaf52 JS |
1385 | retval = hid_register_driver(&hid_usb_driver); |
1386 | if (retval) | |
1387 | goto hid_register_fail; | |
876b9276 PW |
1388 | retval = usbhid_quirks_init(quirks_param); |
1389 | if (retval) | |
1390 | goto usbhid_quirks_init_fail; | |
1da177e4 LT |
1391 | retval = hiddev_init(); |
1392 | if (retval) | |
1393 | goto hiddev_init_fail; | |
1394 | retval = usb_register(&hid_driver); | |
1395 | if (retval) | |
1396 | goto usb_register_fail; | |
ccabcd2d | 1397 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "\n"); |
1da177e4 LT |
1398 | |
1399 | return 0; | |
1400 | usb_register_fail: | |
1401 | hiddev_exit(); | |
1402 | hiddev_init_fail: | |
876b9276 PW |
1403 | usbhid_quirks_exit(); |
1404 | usbhid_quirks_init_fail: | |
85cdaf52 JS |
1405 | hid_unregister_driver(&hid_usb_driver); |
1406 | hid_register_fail: | |
0361a28d ON |
1407 | destroy_workqueue(resumption_waker); |
1408 | no_queue: | |
1da177e4 LT |
1409 | return retval; |
1410 | } | |
1411 | ||
1412 | static void __exit hid_exit(void) | |
1413 | { | |
1414 | usb_deregister(&hid_driver); | |
1415 | hiddev_exit(); | |
876b9276 | 1416 | usbhid_quirks_exit(); |
85cdaf52 | 1417 | hid_unregister_driver(&hid_usb_driver); |
0361a28d | 1418 | destroy_workqueue(resumption_waker); |
1da177e4 LT |
1419 | } |
1420 | ||
1421 | module_init(hid_init); | |
1422 | module_exit(hid_exit); | |
1423 | ||
88adb72b JK |
1424 | MODULE_AUTHOR("Andreas Gal"); |
1425 | MODULE_AUTHOR("Vojtech Pavlik"); | |
1426 | MODULE_AUTHOR("Jiri Kosina"); | |
1da177e4 LT |
1427 | MODULE_DESCRIPTION(DRIVER_DESC); |
1428 | MODULE_LICENSE(DRIVER_LICENSE); |