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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 |
a635f9dd | 8 | * Copyright (c) 2006-2009 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 | ||
bf0964dc | 44 | #define DRIVER_VERSION "v2.6" |
f142b3a4 | 45 | #define DRIVER_AUTHOR "Andreas Gal, Vojtech Pavlik, Jiri Kosina" |
1da177e4 LT |
46 | #define DRIVER_DESC "USB HID core driver" |
47 | #define DRIVER_LICENSE "GPL" | |
48 | ||
1da177e4 LT |
49 | /* |
50 | * Module parameters. | |
51 | */ | |
52 | ||
53 | static unsigned int hid_mousepoll_interval; | |
54 | module_param_named(mousepoll, hid_mousepoll_interval, uint, 0644); | |
55 | MODULE_PARM_DESC(mousepoll, "Polling interval of mice"); | |
56 | ||
0361a28d ON |
57 | static unsigned int ignoreled; |
58 | module_param_named(ignoreled, ignoreled, uint, 0644); | |
59 | MODULE_PARM_DESC(ignoreled, "Autosuspend with active leds"); | |
60 | ||
876b9276 PW |
61 | /* Quirks specified at module load time */ |
62 | static char *quirks_param[MAX_USBHID_BOOT_QUIRKS] = { [ 0 ... (MAX_USBHID_BOOT_QUIRKS - 1) ] = NULL }; | |
63 | module_param_array_named(quirks, quirks_param, charp, NULL, 0444); | |
64 | MODULE_PARM_DESC(quirks, "Add/modify USB HID quirks by specifying " | |
65 | " quirks=vendorID:productID:quirks" | |
66 | " where vendorID, productID, and quirks are all in" | |
67 | " 0x-prefixed hex"); | |
1da177e4 | 68 | /* |
48b4554a | 69 | * Input submission and I/O error handler. |
1da177e4 | 70 | */ |
0361a28d ON |
71 | static DEFINE_MUTEX(hid_open_mut); |
72 | static struct workqueue_struct *resumption_waker; | |
1da177e4 | 73 | |
48b4554a | 74 | static void hid_io_error(struct hid_device *hid); |
0361a28d ON |
75 | static int hid_submit_out(struct hid_device *hid); |
76 | static int hid_submit_ctrl(struct hid_device *hid); | |
77 | static void hid_cancel_delayed_stuff(struct usbhid_device *usbhid); | |
48b4554a JK |
78 | |
79 | /* Start up the input URB */ | |
80 | static int hid_start_in(struct hid_device *hid) | |
1da177e4 | 81 | { |
1da177e4 | 82 | unsigned long flags; |
48b4554a JK |
83 | int rc = 0; |
84 | struct usbhid_device *usbhid = hid->driver_data; | |
1da177e4 | 85 | |
0361a28d ON |
86 | spin_lock_irqsave(&usbhid->lock, flags); |
87 | if (hid->open > 0 && | |
69626f23 | 88 | !test_bit(HID_DISCONNECTED, &usbhid->iofl) && |
0361a28d | 89 | !test_bit(HID_REPORTED_IDLE, &usbhid->iofl) && |
48b4554a JK |
90 | !test_and_set_bit(HID_IN_RUNNING, &usbhid->iofl)) { |
91 | rc = usb_submit_urb(usbhid->urbin, GFP_ATOMIC); | |
92 | if (rc != 0) | |
93 | clear_bit(HID_IN_RUNNING, &usbhid->iofl); | |
1da177e4 | 94 | } |
0361a28d | 95 | spin_unlock_irqrestore(&usbhid->lock, flags); |
48b4554a | 96 | return rc; |
1da177e4 LT |
97 | } |
98 | ||
48b4554a JK |
99 | /* I/O retry timer routine */ |
100 | static void hid_retry_timeout(unsigned long _hid) | |
1da177e4 | 101 | { |
48b4554a | 102 | struct hid_device *hid = (struct hid_device *) _hid; |
4916b3a5 | 103 | struct usbhid_device *usbhid = hid->driver_data; |
1da177e4 | 104 | |
48b4554a JK |
105 | dev_dbg(&usbhid->intf->dev, "retrying intr urb\n"); |
106 | if (hid_start_in(hid)) | |
107 | hid_io_error(hid); | |
1da177e4 LT |
108 | } |
109 | ||
48b4554a JK |
110 | /* Workqueue routine to reset the device or clear a halt */ |
111 | static void hid_reset(struct work_struct *work) | |
1da177e4 | 112 | { |
48b4554a JK |
113 | struct usbhid_device *usbhid = |
114 | container_of(work, struct usbhid_device, reset_work); | |
115 | struct hid_device *hid = usbhid->hid; | |
011b15df | 116 | int rc = 0; |
1da177e4 | 117 | |
48b4554a JK |
118 | if (test_bit(HID_CLEAR_HALT, &usbhid->iofl)) { |
119 | dev_dbg(&usbhid->intf->dev, "clear halt\n"); | |
120 | rc = usb_clear_halt(hid_to_usb_dev(hid), usbhid->urbin->pipe); | |
121 | clear_bit(HID_CLEAR_HALT, &usbhid->iofl); | |
122 | hid_start_in(hid); | |
123 | } | |
1da177e4 | 124 | |
48b4554a JK |
125 | else if (test_bit(HID_RESET_PENDING, &usbhid->iofl)) { |
126 | dev_dbg(&usbhid->intf->dev, "resetting device\n"); | |
011b15df AS |
127 | rc = usb_lock_device_for_reset(hid_to_usb_dev(hid), usbhid->intf); |
128 | if (rc == 0) { | |
742120c6 | 129 | rc = usb_reset_device(hid_to_usb_dev(hid)); |
011b15df | 130 | usb_unlock_device(hid_to_usb_dev(hid)); |
1da177e4 | 131 | } |
48b4554a | 132 | clear_bit(HID_RESET_PENDING, &usbhid->iofl); |
1da177e4 LT |
133 | } |
134 | ||
48b4554a JK |
135 | switch (rc) { |
136 | case 0: | |
137 | if (!test_bit(HID_IN_RUNNING, &usbhid->iofl)) | |
138 | hid_io_error(hid); | |
139 | break; | |
140 | default: | |
58037eb9 | 141 | err_hid("can't reset device, %s-%s/input%d, status %d", |
48b4554a JK |
142 | hid_to_usb_dev(hid)->bus->bus_name, |
143 | hid_to_usb_dev(hid)->devpath, | |
144 | usbhid->ifnum, rc); | |
145 | /* FALLTHROUGH */ | |
146 | case -EHOSTUNREACH: | |
147 | case -ENODEV: | |
148 | case -EINTR: | |
149 | break; | |
1da177e4 | 150 | } |
1da177e4 LT |
151 | } |
152 | ||
48b4554a JK |
153 | /* Main I/O error handler */ |
154 | static void hid_io_error(struct hid_device *hid) | |
dde5845a | 155 | { |
48b4554a JK |
156 | unsigned long flags; |
157 | struct usbhid_device *usbhid = hid->driver_data; | |
dde5845a | 158 | |
0361a28d | 159 | spin_lock_irqsave(&usbhid->lock, flags); |
dde5845a | 160 | |
48b4554a | 161 | /* Stop when disconnected */ |
69626f23 | 162 | if (test_bit(HID_DISCONNECTED, &usbhid->iofl)) |
48b4554a | 163 | goto done; |
dde5845a | 164 | |
5e2a55f2 AS |
165 | /* If it has been a while since the last error, we'll assume |
166 | * this a brand new error and reset the retry timeout. */ | |
167 | if (time_after(jiffies, usbhid->stop_retry + HZ/2)) | |
168 | usbhid->retry_delay = 0; | |
169 | ||
48b4554a JK |
170 | /* When an error occurs, retry at increasing intervals */ |
171 | if (usbhid->retry_delay == 0) { | |
172 | usbhid->retry_delay = 13; /* Then 26, 52, 104, 104, ... */ | |
173 | usbhid->stop_retry = jiffies + msecs_to_jiffies(1000); | |
174 | } else if (usbhid->retry_delay < 100) | |
175 | usbhid->retry_delay *= 2; | |
dde5845a | 176 | |
48b4554a | 177 | if (time_after(jiffies, usbhid->stop_retry)) { |
4916b3a5 | 178 | |
48b4554a JK |
179 | /* Retries failed, so do a port reset */ |
180 | if (!test_and_set_bit(HID_RESET_PENDING, &usbhid->iofl)) { | |
181 | schedule_work(&usbhid->reset_work); | |
182 | goto done; | |
183 | } | |
1da177e4 LT |
184 | } |
185 | ||
48b4554a JK |
186 | mod_timer(&usbhid->io_retry, |
187 | jiffies + msecs_to_jiffies(usbhid->retry_delay)); | |
188 | done: | |
0361a28d ON |
189 | spin_unlock_irqrestore(&usbhid->lock, flags); |
190 | } | |
191 | ||
192 | static void usbhid_mark_busy(struct usbhid_device *usbhid) | |
193 | { | |
194 | struct usb_interface *intf = usbhid->intf; | |
195 | ||
196 | usb_mark_last_busy(interface_to_usbdev(intf)); | |
197 | } | |
198 | ||
199 | static int usbhid_restart_out_queue(struct usbhid_device *usbhid) | |
200 | { | |
201 | struct hid_device *hid = usb_get_intfdata(usbhid->intf); | |
202 | int kicked; | |
203 | ||
204 | if (!hid) | |
205 | return 0; | |
206 | ||
207 | if ((kicked = (usbhid->outhead != usbhid->outtail))) { | |
208 | dbg("Kicking head %d tail %d", usbhid->outhead, usbhid->outtail); | |
209 | if (hid_submit_out(hid)) { | |
210 | clear_bit(HID_OUT_RUNNING, &usbhid->iofl); | |
211 | wake_up(&usbhid->wait); | |
212 | } | |
213 | } | |
214 | return kicked; | |
215 | } | |
216 | ||
217 | static int usbhid_restart_ctrl_queue(struct usbhid_device *usbhid) | |
218 | { | |
219 | struct hid_device *hid = usb_get_intfdata(usbhid->intf); | |
220 | int kicked; | |
221 | ||
222 | WARN_ON(hid == NULL); | |
223 | if (!hid) | |
224 | return 0; | |
225 | ||
226 | if ((kicked = (usbhid->ctrlhead != usbhid->ctrltail))) { | |
227 | dbg("Kicking head %d tail %d", usbhid->ctrlhead, usbhid->ctrltail); | |
228 | if (hid_submit_ctrl(hid)) { | |
229 | clear_bit(HID_CTRL_RUNNING, &usbhid->iofl); | |
230 | wake_up(&usbhid->wait); | |
231 | } | |
232 | } | |
233 | return kicked; | |
1da177e4 LT |
234 | } |
235 | ||
48b4554a JK |
236 | /* |
237 | * Input interrupt completion handler. | |
238 | */ | |
854561b0 | 239 | |
48b4554a | 240 | static void hid_irq_in(struct urb *urb) |
1da177e4 | 241 | { |
48b4554a JK |
242 | struct hid_device *hid = urb->context; |
243 | struct usbhid_device *usbhid = hid->driver_data; | |
244 | int status; | |
1da177e4 | 245 | |
48b4554a | 246 | switch (urb->status) { |
880d29f1 | 247 | case 0: /* success */ |
0361a28d | 248 | usbhid_mark_busy(usbhid); |
880d29f1 JS |
249 | usbhid->retry_delay = 0; |
250 | hid_input_report(urb->context, HID_INPUT_REPORT, | |
251 | urb->transfer_buffer, | |
252 | urb->actual_length, 1); | |
0361a28d ON |
253 | /* |
254 | * autosuspend refused while keys are pressed | |
255 | * because most keyboards don't wake up when | |
256 | * a key is released | |
257 | */ | |
258 | if (hid_check_keys_pressed(hid)) | |
259 | set_bit(HID_KEYS_PRESSED, &usbhid->iofl); | |
260 | else | |
261 | clear_bit(HID_KEYS_PRESSED, &usbhid->iofl); | |
880d29f1 JS |
262 | break; |
263 | case -EPIPE: /* stall */ | |
0361a28d | 264 | usbhid_mark_busy(usbhid); |
880d29f1 JS |
265 | clear_bit(HID_IN_RUNNING, &usbhid->iofl); |
266 | set_bit(HID_CLEAR_HALT, &usbhid->iofl); | |
267 | schedule_work(&usbhid->reset_work); | |
268 | return; | |
269 | case -ECONNRESET: /* unlink */ | |
270 | case -ENOENT: | |
271 | case -ESHUTDOWN: /* unplug */ | |
272 | clear_bit(HID_IN_RUNNING, &usbhid->iofl); | |
273 | return; | |
274 | case -EILSEQ: /* protocol error or unplug */ | |
275 | case -EPROTO: /* protocol error or unplug */ | |
276 | case -ETIME: /* protocol error or unplug */ | |
277 | case -ETIMEDOUT: /* Should never happen, but... */ | |
0361a28d | 278 | usbhid_mark_busy(usbhid); |
880d29f1 JS |
279 | clear_bit(HID_IN_RUNNING, &usbhid->iofl); |
280 | hid_io_error(hid); | |
281 | return; | |
282 | default: /* error */ | |
7d89fe12 GKH |
283 | dev_warn(&urb->dev->dev, "input irq status %d " |
284 | "received\n", urb->status); | |
48b4554a | 285 | } |
1da177e4 | 286 | |
48b4554a JK |
287 | status = usb_submit_urb(urb, GFP_ATOMIC); |
288 | if (status) { | |
289 | clear_bit(HID_IN_RUNNING, &usbhid->iofl); | |
290 | if (status != -EPERM) { | |
58037eb9 | 291 | err_hid("can't resubmit intr, %s-%s/input%d, status %d", |
48b4554a JK |
292 | hid_to_usb_dev(hid)->bus->bus_name, |
293 | hid_to_usb_dev(hid)->devpath, | |
294 | usbhid->ifnum, status); | |
295 | hid_io_error(hid); | |
296 | } | |
297 | } | |
1da177e4 LT |
298 | } |
299 | ||
48b4554a | 300 | static int hid_submit_out(struct hid_device *hid) |
1da177e4 | 301 | { |
48b4554a | 302 | struct hid_report *report; |
f129ea6d | 303 | char *raw_report; |
4916b3a5 JK |
304 | struct usbhid_device *usbhid = hid->driver_data; |
305 | ||
f129ea6d AH |
306 | report = usbhid->out[usbhid->outtail].report; |
307 | raw_report = usbhid->out[usbhid->outtail].raw_report; | |
1da177e4 | 308 | |
0361a28d ON |
309 | if (!test_bit(HID_REPORTED_IDLE, &usbhid->iofl)) { |
310 | usbhid->urbout->transfer_buffer_length = ((report->size - 1) >> 3) + 1 + (report->id > 0); | |
311 | usbhid->urbout->dev = hid_to_usb_dev(hid); | |
312 | memcpy(usbhid->outbuf, raw_report, usbhid->urbout->transfer_buffer_length); | |
313 | kfree(raw_report); | |
1d3e2023 | 314 | |
0361a28d | 315 | dbg_hid("submitting out urb\n"); |
d57cdcff | 316 | |
0361a28d ON |
317 | if (usb_submit_urb(usbhid->urbout, GFP_ATOMIC)) { |
318 | err_hid("usb_submit_urb(out) failed"); | |
319 | return -1; | |
320 | } | |
321 | } else { | |
322 | /* | |
323 | * queue work to wake up the device. | |
324 | * as the work queue is freezeable, this is safe | |
325 | * with respect to STD and STR | |
326 | */ | |
327 | queue_work(resumption_waker, &usbhid->restart_work); | |
48b4554a | 328 | } |
1da177e4 | 329 | |
48b4554a JK |
330 | return 0; |
331 | } | |
332 | ||
333 | static int hid_submit_ctrl(struct hid_device *hid) | |
1da177e4 LT |
334 | { |
335 | struct hid_report *report; | |
48b4554a | 336 | unsigned char dir; |
f129ea6d | 337 | char *raw_report; |
48b4554a | 338 | int len; |
4916b3a5 | 339 | struct usbhid_device *usbhid = hid->driver_data; |
1da177e4 | 340 | |
48b4554a | 341 | report = usbhid->ctrl[usbhid->ctrltail].report; |
f129ea6d | 342 | raw_report = usbhid->ctrl[usbhid->ctrltail].raw_report; |
48b4554a | 343 | dir = usbhid->ctrl[usbhid->ctrltail].dir; |
1da177e4 | 344 | |
0361a28d ON |
345 | if (!test_bit(HID_REPORTED_IDLE, &usbhid->iofl)) { |
346 | len = ((report->size - 1) >> 3) + 1 + (report->id > 0); | |
347 | if (dir == USB_DIR_OUT) { | |
348 | usbhid->urbctrl->pipe = usb_sndctrlpipe(hid_to_usb_dev(hid), 0); | |
349 | usbhid->urbctrl->transfer_buffer_length = len; | |
350 | memcpy(usbhid->ctrlbuf, raw_report, len); | |
351 | kfree(raw_report); | |
352 | } else { | |
353 | int maxpacket, padlen; | |
354 | ||
355 | usbhid->urbctrl->pipe = usb_rcvctrlpipe(hid_to_usb_dev(hid), 0); | |
356 | maxpacket = usb_maxpacket(hid_to_usb_dev(hid), usbhid->urbctrl->pipe, 0); | |
357 | if (maxpacket > 0) { | |
358 | padlen = DIV_ROUND_UP(len, maxpacket); | |
359 | padlen *= maxpacket; | |
360 | if (padlen > usbhid->bufsize) | |
361 | padlen = usbhid->bufsize; | |
362 | } else | |
363 | padlen = 0; | |
364 | usbhid->urbctrl->transfer_buffer_length = padlen; | |
365 | } | |
366 | usbhid->urbctrl->dev = hid_to_usb_dev(hid); | |
1da177e4 | 367 | |
0361a28d ON |
368 | usbhid->cr->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE | dir; |
369 | usbhid->cr->bRequest = (dir == USB_DIR_OUT) ? HID_REQ_SET_REPORT : HID_REQ_GET_REPORT; | |
370 | usbhid->cr->wValue = cpu_to_le16(((report->type + 1) << 8) | report->id); | |
371 | usbhid->cr->wIndex = cpu_to_le16(usbhid->ifnum); | |
372 | usbhid->cr->wLength = cpu_to_le16(len); | |
1da177e4 | 373 | |
0361a28d ON |
374 | dbg_hid("submitting ctrl urb: %s wValue=0x%04x wIndex=0x%04x wLength=%u\n", |
375 | usbhid->cr->bRequest == HID_REQ_SET_REPORT ? "Set_Report" : "Get_Report", | |
376 | usbhid->cr->wValue, usbhid->cr->wIndex, usbhid->cr->wLength); | |
1da177e4 | 377 | |
0361a28d ON |
378 | if (usb_submit_urb(usbhid->urbctrl, GFP_ATOMIC)) { |
379 | err_hid("usb_submit_urb(ctrl) failed"); | |
380 | return -1; | |
381 | } | |
382 | } else { | |
383 | /* | |
384 | * queue work to wake up the device. | |
385 | * as the work queue is freezeable, this is safe | |
386 | * with respect to STD and STR | |
387 | */ | |
388 | queue_work(resumption_waker, &usbhid->restart_work); | |
48b4554a | 389 | } |
1da177e4 | 390 | |
48b4554a JK |
391 | return 0; |
392 | } | |
1da177e4 | 393 | |
48b4554a JK |
394 | /* |
395 | * Output interrupt completion handler. | |
396 | */ | |
1da177e4 | 397 | |
48b4554a JK |
398 | static void hid_irq_out(struct urb *urb) |
399 | { | |
400 | struct hid_device *hid = urb->context; | |
401 | struct usbhid_device *usbhid = hid->driver_data; | |
402 | unsigned long flags; | |
403 | int unplug = 0; | |
1da177e4 | 404 | |
48b4554a | 405 | switch (urb->status) { |
880d29f1 JS |
406 | case 0: /* success */ |
407 | break; | |
408 | case -ESHUTDOWN: /* unplug */ | |
409 | unplug = 1; | |
410 | case -EILSEQ: /* protocol error or unplug */ | |
411 | case -EPROTO: /* protocol error or unplug */ | |
412 | case -ECONNRESET: /* unlink */ | |
413 | case -ENOENT: | |
414 | break; | |
415 | default: /* error */ | |
7d89fe12 GKH |
416 | dev_warn(&urb->dev->dev, "output irq status %d " |
417 | "received\n", urb->status); | |
48b4554a | 418 | } |
1da177e4 | 419 | |
0361a28d | 420 | spin_lock_irqsave(&usbhid->lock, flags); |
1da177e4 | 421 | |
48b4554a JK |
422 | if (unplug) |
423 | usbhid->outtail = usbhid->outhead; | |
424 | else | |
425 | usbhid->outtail = (usbhid->outtail + 1) & (HID_OUTPUT_FIFO_SIZE - 1); | |
1da177e4 | 426 | |
48b4554a JK |
427 | if (usbhid->outhead != usbhid->outtail) { |
428 | if (hid_submit_out(hid)) { | |
429 | clear_bit(HID_OUT_RUNNING, &usbhid->iofl); | |
1d1bdd20 | 430 | wake_up(&usbhid->wait); |
48b4554a | 431 | } |
0361a28d | 432 | spin_unlock_irqrestore(&usbhid->lock, flags); |
48b4554a JK |
433 | return; |
434 | } | |
1da177e4 | 435 | |
48b4554a | 436 | clear_bit(HID_OUT_RUNNING, &usbhid->iofl); |
0361a28d | 437 | spin_unlock_irqrestore(&usbhid->lock, flags); |
1d1bdd20 | 438 | wake_up(&usbhid->wait); |
48b4554a | 439 | } |
6345fdfd | 440 | |
48b4554a JK |
441 | /* |
442 | * Control pipe completion handler. | |
443 | */ | |
1da177e4 | 444 | |
48b4554a JK |
445 | static void hid_ctrl(struct urb *urb) |
446 | { | |
447 | struct hid_device *hid = urb->context; | |
448 | struct usbhid_device *usbhid = hid->driver_data; | |
0361a28d | 449 | int unplug = 0, status = urb->status; |
1da177e4 | 450 | |
0361a28d | 451 | spin_lock(&usbhid->lock); |
1da177e4 | 452 | |
0361a28d | 453 | switch (status) { |
880d29f1 JS |
454 | case 0: /* success */ |
455 | if (usbhid->ctrl[usbhid->ctrltail].dir == USB_DIR_IN) | |
456 | hid_input_report(urb->context, | |
457 | usbhid->ctrl[usbhid->ctrltail].report->type, | |
458 | urb->transfer_buffer, urb->actual_length, 0); | |
459 | break; | |
460 | case -ESHUTDOWN: /* unplug */ | |
461 | unplug = 1; | |
462 | case -EILSEQ: /* protocol error or unplug */ | |
463 | case -EPROTO: /* protocol error or unplug */ | |
464 | case -ECONNRESET: /* unlink */ | |
465 | case -ENOENT: | |
466 | case -EPIPE: /* report not available */ | |
467 | break; | |
468 | default: /* error */ | |
7d89fe12 | 469 | dev_warn(&urb->dev->dev, "ctrl urb status %d " |
0361a28d | 470 | "received\n", status); |
48b4554a | 471 | } |
1da177e4 | 472 | |
48b4554a JK |
473 | if (unplug) |
474 | usbhid->ctrltail = usbhid->ctrlhead; | |
475 | else | |
476 | usbhid->ctrltail = (usbhid->ctrltail + 1) & (HID_CONTROL_FIFO_SIZE - 1); | |
1da177e4 | 477 | |
48b4554a JK |
478 | if (usbhid->ctrlhead != usbhid->ctrltail) { |
479 | if (hid_submit_ctrl(hid)) { | |
480 | clear_bit(HID_CTRL_RUNNING, &usbhid->iofl); | |
1d1bdd20 | 481 | wake_up(&usbhid->wait); |
48b4554a | 482 | } |
0361a28d | 483 | spin_unlock(&usbhid->lock); |
48b4554a JK |
484 | return; |
485 | } | |
1da177e4 | 486 | |
48b4554a | 487 | clear_bit(HID_CTRL_RUNNING, &usbhid->iofl); |
0361a28d | 488 | spin_unlock(&usbhid->lock); |
1d1bdd20 | 489 | wake_up(&usbhid->wait); |
48b4554a | 490 | } |
1da177e4 | 491 | |
52cfc61b HS |
492 | static void __usbhid_submit_report(struct hid_device *hid, struct hid_report *report, |
493 | unsigned char dir) | |
48b4554a JK |
494 | { |
495 | int head; | |
48b4554a | 496 | struct usbhid_device *usbhid = hid->driver_data; |
f129ea6d | 497 | int len = ((report->size - 1) >> 3) + 1 + (report->id > 0); |
1da177e4 | 498 | |
48b4554a JK |
499 | if ((hid->quirks & HID_QUIRK_NOGET) && dir == USB_DIR_IN) |
500 | return; | |
b857c651 | 501 | |
48b4554a | 502 | if (usbhid->urbout && dir == USB_DIR_OUT && report->type == HID_OUTPUT_REPORT) { |
48b4554a | 503 | if ((head = (usbhid->outhead + 1) & (HID_OUTPUT_FIFO_SIZE - 1)) == usbhid->outtail) { |
7d89fe12 | 504 | dev_warn(&hid->dev, "output queue full\n"); |
48b4554a JK |
505 | return; |
506 | } | |
1da177e4 | 507 | |
f129ea6d AH |
508 | usbhid->out[usbhid->outhead].raw_report = kmalloc(len, GFP_ATOMIC); |
509 | if (!usbhid->out[usbhid->outhead].raw_report) { | |
46fcaec5 | 510 | dev_warn(&hid->dev, "output queueing failed\n"); |
f129ea6d AH |
511 | return; |
512 | } | |
513 | hid_output_report(report, usbhid->out[usbhid->outhead].raw_report); | |
514 | usbhid->out[usbhid->outhead].report = report; | |
48b4554a | 515 | usbhid->outhead = head; |
4871d3be | 516 | |
48b4554a JK |
517 | if (!test_and_set_bit(HID_OUT_RUNNING, &usbhid->iofl)) |
518 | if (hid_submit_out(hid)) | |
519 | clear_bit(HID_OUT_RUNNING, &usbhid->iofl); | |
48b4554a JK |
520 | return; |
521 | } | |
1da177e4 | 522 | |
48b4554a | 523 | if ((head = (usbhid->ctrlhead + 1) & (HID_CONTROL_FIFO_SIZE - 1)) == usbhid->ctrltail) { |
7d89fe12 | 524 | dev_warn(&hid->dev, "control queue full\n"); |
48b4554a JK |
525 | return; |
526 | } | |
8fd80133 | 527 | |
f129ea6d AH |
528 | if (dir == USB_DIR_OUT) { |
529 | usbhid->ctrl[usbhid->ctrlhead].raw_report = kmalloc(len, GFP_ATOMIC); | |
530 | if (!usbhid->ctrl[usbhid->ctrlhead].raw_report) { | |
46fcaec5 | 531 | dev_warn(&hid->dev, "control queueing failed\n"); |
f129ea6d AH |
532 | return; |
533 | } | |
534 | hid_output_report(report, usbhid->ctrl[usbhid->ctrlhead].raw_report); | |
535 | } | |
48b4554a JK |
536 | usbhid->ctrl[usbhid->ctrlhead].report = report; |
537 | usbhid->ctrl[usbhid->ctrlhead].dir = dir; | |
538 | usbhid->ctrlhead = head; | |
8fd80133 | 539 | |
48b4554a JK |
540 | if (!test_and_set_bit(HID_CTRL_RUNNING, &usbhid->iofl)) |
541 | if (hid_submit_ctrl(hid)) | |
542 | clear_bit(HID_CTRL_RUNNING, &usbhid->iofl); | |
0361a28d | 543 | } |
931e24b9 | 544 | |
0361a28d ON |
545 | void usbhid_submit_report(struct hid_device *hid, struct hid_report *report, unsigned char dir) |
546 | { | |
547 | struct usbhid_device *usbhid = hid->driver_data; | |
548 | unsigned long flags; | |
931e24b9 | 549 | |
0361a28d ON |
550 | spin_lock_irqsave(&usbhid->lock, flags); |
551 | __usbhid_submit_report(hid, report, dir); | |
552 | spin_unlock_irqrestore(&usbhid->lock, flags); | |
48b4554a | 553 | } |
606bd0a8 | 554 | EXPORT_SYMBOL_GPL(usbhid_submit_report); |
23b0d968 | 555 | |
48b4554a JK |
556 | static int usb_hidinput_input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) |
557 | { | |
e0712985 | 558 | struct hid_device *hid = input_get_drvdata(dev); |
0361a28d | 559 | struct usbhid_device *usbhid = hid->driver_data; |
48b4554a | 560 | struct hid_field *field; |
0361a28d | 561 | unsigned long flags; |
48b4554a | 562 | int offset; |
41ad5fba | 563 | |
48b4554a JK |
564 | if (type == EV_FF) |
565 | return input_ff_event(dev, type, code, value); | |
8d2bad87 | 566 | |
48b4554a JK |
567 | if (type != EV_LED) |
568 | return -1; | |
5556feae | 569 | |
48b4554a | 570 | if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) { |
7d89fe12 | 571 | dev_warn(&dev->dev, "event field not found\n"); |
48b4554a JK |
572 | return -1; |
573 | } | |
4a1a4d8b | 574 | |
48b4554a | 575 | hid_set_field(field, offset, value); |
0361a28d ON |
576 | if (value) { |
577 | spin_lock_irqsave(&usbhid->lock, flags); | |
578 | usbhid->ledcount++; | |
579 | spin_unlock_irqrestore(&usbhid->lock, flags); | |
580 | } else { | |
581 | spin_lock_irqsave(&usbhid->lock, flags); | |
582 | usbhid->ledcount--; | |
583 | spin_unlock_irqrestore(&usbhid->lock, flags); | |
584 | } | |
48b4554a | 585 | usbhid_submit_report(hid, field->report, USB_DIR_OUT); |
1da177e4 | 586 | |
48b4554a JK |
587 | return 0; |
588 | } | |
1da177e4 | 589 | |
48b4554a JK |
590 | int usbhid_wait_io(struct hid_device *hid) |
591 | { | |
592 | struct usbhid_device *usbhid = hid->driver_data; | |
25914662 | 593 | |
1d1bdd20 JS |
594 | if (!wait_event_timeout(usbhid->wait, |
595 | (!test_bit(HID_CTRL_RUNNING, &usbhid->iofl) && | |
596 | !test_bit(HID_OUT_RUNNING, &usbhid->iofl)), | |
48b4554a | 597 | 10*HZ)) { |
58037eb9 | 598 | dbg_hid("timeout waiting for ctrl or out queue to clear\n"); |
48b4554a JK |
599 | return -1; |
600 | } | |
1da177e4 | 601 | |
48b4554a JK |
602 | return 0; |
603 | } | |
53880546 | 604 | |
48b4554a JK |
605 | static int hid_set_idle(struct usb_device *dev, int ifnum, int report, int idle) |
606 | { | |
607 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
608 | HID_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE, (idle << 8) | report, | |
609 | ifnum, NULL, 0, USB_CTRL_SET_TIMEOUT); | |
610 | } | |
1da177e4 | 611 | |
48b4554a JK |
612 | static int hid_get_class_descriptor(struct usb_device *dev, int ifnum, |
613 | unsigned char type, void *buf, int size) | |
614 | { | |
615 | int result, retries = 4; | |
1da177e4 | 616 | |
48b4554a | 617 | memset(buf, 0, size); |
1da177e4 | 618 | |
48b4554a JK |
619 | do { |
620 | result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), | |
621 | USB_REQ_GET_DESCRIPTOR, USB_RECIP_INTERFACE | USB_DIR_IN, | |
622 | (type << 8), ifnum, buf, size, USB_CTRL_GET_TIMEOUT); | |
623 | retries--; | |
624 | } while (result < size && retries); | |
625 | return result; | |
626 | } | |
940824b0 | 627 | |
48b4554a JK |
628 | int usbhid_open(struct hid_device *hid) |
629 | { | |
933e3187 ON |
630 | struct usbhid_device *usbhid = hid->driver_data; |
631 | int res; | |
632 | ||
0361a28d | 633 | mutex_lock(&hid_open_mut); |
933e3187 ON |
634 | if (!hid->open++) { |
635 | res = usb_autopm_get_interface(usbhid->intf); | |
0361a28d | 636 | /* the device must be awake to reliable request remote wakeup */ |
933e3187 ON |
637 | if (res < 0) { |
638 | hid->open--; | |
0361a28d | 639 | mutex_unlock(&hid_open_mut); |
933e3187 ON |
640 | return -EIO; |
641 | } | |
0361a28d ON |
642 | usbhid->intf->needs_remote_wakeup = 1; |
643 | if (hid_start_in(hid)) | |
644 | hid_io_error(hid); | |
645 | ||
646 | usb_autopm_put_interface(usbhid->intf); | |
933e3187 | 647 | } |
0361a28d | 648 | mutex_unlock(&hid_open_mut); |
48b4554a JK |
649 | return 0; |
650 | } | |
a417a21e | 651 | |
48b4554a JK |
652 | void usbhid_close(struct hid_device *hid) |
653 | { | |
654 | struct usbhid_device *usbhid = hid->driver_data; | |
eab9edd2 | 655 | |
0361a28d ON |
656 | mutex_lock(&hid_open_mut); |
657 | ||
658 | /* protecting hid->open to make sure we don't restart | |
659 | * data acquistion due to a resumption we no longer | |
660 | * care about | |
661 | */ | |
662 | spin_lock_irq(&usbhid->lock); | |
933e3187 | 663 | if (!--hid->open) { |
0361a28d | 664 | spin_unlock_irq(&usbhid->lock); |
89092ddd | 665 | hid_cancel_delayed_stuff(usbhid); |
48b4554a | 666 | usb_kill_urb(usbhid->urbin); |
0361a28d ON |
667 | usbhid->intf->needs_remote_wakeup = 0; |
668 | } else { | |
669 | spin_unlock_irq(&usbhid->lock); | |
933e3187 | 670 | } |
0361a28d | 671 | mutex_unlock(&hid_open_mut); |
48b4554a | 672 | } |
1d3e2023 | 673 | |
48b4554a JK |
674 | /* |
675 | * Initialize all reports | |
676 | */ | |
41ad5fba | 677 | |
48b4554a JK |
678 | void usbhid_init_reports(struct hid_device *hid) |
679 | { | |
680 | struct hid_report *report; | |
681 | struct usbhid_device *usbhid = hid->driver_data; | |
682 | int err, ret; | |
41ad5fba | 683 | |
48b4554a JK |
684 | list_for_each_entry(report, &hid->report_enum[HID_INPUT_REPORT].report_list, list) |
685 | usbhid_submit_report(hid, report, USB_DIR_IN); | |
5556feae | 686 | |
48b4554a JK |
687 | list_for_each_entry(report, &hid->report_enum[HID_FEATURE_REPORT].report_list, list) |
688 | usbhid_submit_report(hid, report, USB_DIR_IN); | |
4a1a4d8b | 689 | |
48b4554a JK |
690 | err = 0; |
691 | ret = usbhid_wait_io(hid); | |
692 | while (ret) { | |
693 | err |= ret; | |
694 | if (test_bit(HID_CTRL_RUNNING, &usbhid->iofl)) | |
695 | usb_kill_urb(usbhid->urbctrl); | |
696 | if (test_bit(HID_OUT_RUNNING, &usbhid->iofl)) | |
697 | usb_kill_urb(usbhid->urbout); | |
698 | ret = usbhid_wait_io(hid); | |
699 | } | |
3f9b4076 | 700 | |
48b4554a | 701 | if (err) |
7d89fe12 | 702 | dev_warn(&hid->dev, "timeout initializing reports\n"); |
48b4554a | 703 | } |
1da177e4 | 704 | |
713c8aad PZ |
705 | /* |
706 | * Reset LEDs which BIOS might have left on. For now, just NumLock (0x01). | |
707 | */ | |
708 | static int hid_find_field_early(struct hid_device *hid, unsigned int page, | |
709 | unsigned int hid_code, struct hid_field **pfield) | |
710 | { | |
711 | struct hid_report *report; | |
712 | struct hid_field *field; | |
713 | struct hid_usage *usage; | |
714 | int i, j; | |
715 | ||
716 | list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) { | |
717 | for (i = 0; i < report->maxfield; i++) { | |
718 | field = report->field[i]; | |
719 | for (j = 0; j < field->maxusage; j++) { | |
720 | usage = &field->usage[j]; | |
721 | if ((usage->hid & HID_USAGE_PAGE) == page && | |
722 | (usage->hid & 0xFFFF) == hid_code) { | |
723 | *pfield = field; | |
724 | return j; | |
725 | } | |
726 | } | |
727 | } | |
728 | } | |
729 | return -1; | |
730 | } | |
731 | ||
6edfa8dc | 732 | void usbhid_set_leds(struct hid_device *hid) |
713c8aad PZ |
733 | { |
734 | struct hid_field *field; | |
735 | int offset; | |
736 | ||
737 | if ((offset = hid_find_field_early(hid, HID_UP_LED, 0x01, &field)) != -1) { | |
738 | hid_set_field(field, offset, 0); | |
739 | usbhid_submit_report(hid, field->report, USB_DIR_OUT); | |
740 | } | |
741 | } | |
6edfa8dc | 742 | EXPORT_SYMBOL_GPL(usbhid_set_leds); |
713c8aad | 743 | |
bf0964dc MH |
744 | /* |
745 | * Traverse the supplied list of reports and find the longest | |
746 | */ | |
282bfd4c JS |
747 | static void hid_find_max_report(struct hid_device *hid, unsigned int type, |
748 | unsigned int *max) | |
bf0964dc MH |
749 | { |
750 | struct hid_report *report; | |
282bfd4c | 751 | unsigned int size; |
bf0964dc MH |
752 | |
753 | list_for_each_entry(report, &hid->report_enum[type].report_list, list) { | |
efc7ce18 | 754 | size = ((report->size - 1) >> 3) + 1 + hid->report_enum[type].numbered; |
bf0964dc MH |
755 | if (*max < size) |
756 | *max = size; | |
757 | } | |
758 | } | |
759 | ||
1da177e4 LT |
760 | static int hid_alloc_buffers(struct usb_device *dev, struct hid_device *hid) |
761 | { | |
4916b3a5 JK |
762 | struct usbhid_device *usbhid = hid->driver_data; |
763 | ||
898089d0 JS |
764 | usbhid->inbuf = usb_buffer_alloc(dev, usbhid->bufsize, GFP_KERNEL, |
765 | &usbhid->inbuf_dma); | |
766 | usbhid->outbuf = usb_buffer_alloc(dev, usbhid->bufsize, GFP_KERNEL, | |
767 | &usbhid->outbuf_dma); | |
768 | usbhid->cr = usb_buffer_alloc(dev, sizeof(*usbhid->cr), GFP_KERNEL, | |
769 | &usbhid->cr_dma); | |
770 | usbhid->ctrlbuf = usb_buffer_alloc(dev, usbhid->bufsize, GFP_KERNEL, | |
771 | &usbhid->ctrlbuf_dma); | |
772 | if (!usbhid->inbuf || !usbhid->outbuf || !usbhid->cr || | |
773 | !usbhid->ctrlbuf) | |
1da177e4 LT |
774 | return -1; |
775 | ||
776 | return 0; | |
777 | } | |
778 | ||
efc493f9 JK |
779 | static int usbhid_output_raw_report(struct hid_device *hid, __u8 *buf, size_t count) |
780 | { | |
781 | struct usbhid_device *usbhid = hid->driver_data; | |
782 | struct usb_device *dev = hid_to_usb_dev(hid); | |
783 | struct usb_interface *intf = usbhid->intf; | |
784 | struct usb_host_interface *interface = intf->cur_altsetting; | |
785 | int ret; | |
786 | ||
787 | ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
788 | HID_REQ_SET_REPORT, | |
789 | USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE, | |
01d7b369 | 790 | ((HID_OUTPUT_REPORT + 1) << 8) | *buf, |
efc493f9 JK |
791 | interface->desc.bInterfaceNumber, buf + 1, count - 1, |
792 | USB_CTRL_SET_TIMEOUT); | |
793 | ||
794 | /* count also the report id */ | |
795 | if (ret > 0) | |
796 | ret++; | |
797 | ||
798 | return ret; | |
799 | } | |
800 | ||
0361a28d ON |
801 | static void usbhid_restart_queues(struct usbhid_device *usbhid) |
802 | { | |
803 | if (usbhid->urbout) | |
804 | usbhid_restart_out_queue(usbhid); | |
805 | usbhid_restart_ctrl_queue(usbhid); | |
806 | } | |
807 | ||
808 | static void __usbhid_restart_queues(struct work_struct *work) | |
809 | { | |
810 | struct usbhid_device *usbhid = | |
811 | container_of(work, struct usbhid_device, restart_work); | |
812 | int r; | |
813 | ||
814 | r = usb_autopm_get_interface(usbhid->intf); | |
815 | if (r < 0) | |
816 | return; | |
817 | usb_autopm_put_interface(usbhid->intf); | |
818 | } | |
819 | ||
1da177e4 LT |
820 | static void hid_free_buffers(struct usb_device *dev, struct hid_device *hid) |
821 | { | |
4916b3a5 JK |
822 | struct usbhid_device *usbhid = hid->driver_data; |
823 | ||
6675c5bd DT |
824 | usb_buffer_free(dev, usbhid->bufsize, usbhid->inbuf, usbhid->inbuf_dma); |
825 | usb_buffer_free(dev, usbhid->bufsize, usbhid->outbuf, usbhid->outbuf_dma); | |
826 | usb_buffer_free(dev, sizeof(*(usbhid->cr)), usbhid->cr, usbhid->cr_dma); | |
827 | usb_buffer_free(dev, usbhid->bufsize, usbhid->ctrlbuf, usbhid->ctrlbuf_dma); | |
1da177e4 LT |
828 | } |
829 | ||
c500c971 JS |
830 | static int usbhid_parse(struct hid_device *hid) |
831 | { | |
832 | struct usb_interface *intf = to_usb_interface(hid->dev.parent); | |
1da177e4 LT |
833 | struct usb_host_interface *interface = intf->cur_altsetting; |
834 | struct usb_device *dev = interface_to_usbdev (intf); | |
835 | struct hid_descriptor *hdesc; | |
2eb5dc30 | 836 | u32 quirks = 0; |
c500c971 | 837 | unsigned int rsize = 0; |
c5b7c7c3 | 838 | char *rdesc; |
c500c971 | 839 | int ret, n; |
1da177e4 | 840 | |
2eb5dc30 PW |
841 | quirks = usbhid_lookup_quirk(le16_to_cpu(dev->descriptor.idVendor), |
842 | le16_to_cpu(dev->descriptor.idProduct)); | |
1da177e4 | 843 | |
6f4303fb JK |
844 | if (quirks & HID_QUIRK_IGNORE) |
845 | return -ENODEV; | |
846 | ||
0f28b55d AS |
847 | /* Many keyboards and mice don't like to be polled for reports, |
848 | * so we will always set the HID_QUIRK_NOGET flag for them. */ | |
849 | if (interface->desc.bInterfaceSubClass == USB_INTERFACE_SUBCLASS_BOOT) { | |
850 | if (interface->desc.bInterfaceProtocol == USB_INTERFACE_PROTOCOL_KEYBOARD || | |
851 | interface->desc.bInterfaceProtocol == USB_INTERFACE_PROTOCOL_MOUSE) | |
852 | quirks |= HID_QUIRK_NOGET; | |
853 | } | |
854 | ||
c5b7c7c3 DT |
855 | if (usb_get_extra_descriptor(interface, HID_DT_HID, &hdesc) && |
856 | (!interface->desc.bNumEndpoints || | |
857 | usb_get_extra_descriptor(&interface->endpoint[0], HID_DT_HID, &hdesc))) { | |
58037eb9 | 858 | dbg_hid("class descriptor not present\n"); |
c500c971 | 859 | return -ENODEV; |
1da177e4 LT |
860 | } |
861 | ||
c500c971 JS |
862 | hid->version = le16_to_cpu(hdesc->bcdHID); |
863 | hid->country = hdesc->bCountryCode; | |
864 | ||
1da177e4 LT |
865 | for (n = 0; n < hdesc->bNumDescriptors; n++) |
866 | if (hdesc->desc[n].bDescriptorType == HID_DT_REPORT) | |
867 | rsize = le16_to_cpu(hdesc->desc[n].wDescriptorLength); | |
868 | ||
869 | if (!rsize || rsize > HID_MAX_DESCRIPTOR_SIZE) { | |
58037eb9 | 870 | dbg_hid("weird size of report descriptor (%u)\n", rsize); |
c500c971 | 871 | return -EINVAL; |
1da177e4 LT |
872 | } |
873 | ||
874 | if (!(rdesc = kmalloc(rsize, GFP_KERNEL))) { | |
58037eb9 | 875 | dbg_hid("couldn't allocate rdesc memory\n"); |
c500c971 | 876 | return -ENOMEM; |
1da177e4 LT |
877 | } |
878 | ||
854561b0 VP |
879 | hid_set_idle(dev, interface->desc.bInterfaceNumber, 0, 0); |
880 | ||
c500c971 JS |
881 | ret = hid_get_class_descriptor(dev, interface->desc.bInterfaceNumber, |
882 | HID_DT_REPORT, rdesc, rsize); | |
883 | if (ret < 0) { | |
58037eb9 | 884 | dbg_hid("reading report descriptor failed\n"); |
1da177e4 | 885 | kfree(rdesc); |
c500c971 | 886 | goto err; |
1da177e4 LT |
887 | } |
888 | ||
c500c971 JS |
889 | ret = hid_parse_report(hid, rdesc, rsize); |
890 | kfree(rdesc); | |
891 | if (ret) { | |
58037eb9 | 892 | dbg_hid("parsing report descriptor failed\n"); |
c500c971 | 893 | goto err; |
1da177e4 LT |
894 | } |
895 | ||
f5208997 | 896 | hid->quirks |= quirks; |
1da177e4 | 897 | |
c500c971 JS |
898 | return 0; |
899 | err: | |
900 | return ret; | |
901 | } | |
902 | ||
903 | static int usbhid_start(struct hid_device *hid) | |
904 | { | |
905 | struct usb_interface *intf = to_usb_interface(hid->dev.parent); | |
906 | struct usb_host_interface *interface = intf->cur_altsetting; | |
907 | struct usb_device *dev = interface_to_usbdev(intf); | |
3d5afd32 | 908 | struct usbhid_device *usbhid = hid->driver_data; |
c500c971 JS |
909 | unsigned int n, insize = 0; |
910 | int ret; | |
911 | ||
e3e14de5 JS |
912 | clear_bit(HID_DISCONNECTED, &usbhid->iofl); |
913 | ||
4916b3a5 JK |
914 | usbhid->bufsize = HID_MIN_BUFFER_SIZE; |
915 | hid_find_max_report(hid, HID_INPUT_REPORT, &usbhid->bufsize); | |
916 | hid_find_max_report(hid, HID_OUTPUT_REPORT, &usbhid->bufsize); | |
917 | hid_find_max_report(hid, HID_FEATURE_REPORT, &usbhid->bufsize); | |
bf0964dc | 918 | |
4916b3a5 JK |
919 | if (usbhid->bufsize > HID_MAX_BUFFER_SIZE) |
920 | usbhid->bufsize = HID_MAX_BUFFER_SIZE; | |
bf0964dc MH |
921 | |
922 | hid_find_max_report(hid, HID_INPUT_REPORT, &insize); | |
923 | ||
924 | if (insize > HID_MAX_BUFFER_SIZE) | |
925 | insize = HID_MAX_BUFFER_SIZE; | |
926 | ||
c500c971 JS |
927 | if (hid_alloc_buffers(dev, hid)) { |
928 | ret = -ENOMEM; | |
1da177e4 | 929 | goto fail; |
f345c37c PS |
930 | } |
931 | ||
1da177e4 | 932 | for (n = 0; n < interface->desc.bNumEndpoints; n++) { |
1da177e4 LT |
933 | struct usb_endpoint_descriptor *endpoint; |
934 | int pipe; | |
935 | int interval; | |
936 | ||
937 | endpoint = &interface->endpoint[n].desc; | |
581a2739 | 938 | if (!usb_endpoint_xfer_int(endpoint)) |
1da177e4 LT |
939 | continue; |
940 | ||
1da177e4 | 941 | interval = endpoint->bInterval; |
1da177e4 | 942 | |
f345c37c | 943 | /* Some vendors give fullspeed interval on highspeed devides */ |
c500c971 | 944 | if (hid->quirks & HID_QUIRK_FULLSPEED_INTERVAL && |
f345c37c PS |
945 | dev->speed == USB_SPEED_HIGH) { |
946 | interval = fls(endpoint->bInterval*8); | |
947 | printk(KERN_INFO "%s: Fixing fullspeed to highspeed interval: %d -> %d\n", | |
948 | hid->name, endpoint->bInterval, interval); | |
949 | } | |
950 | ||
1da177e4 LT |
951 | /* Change the polling interval of mice. */ |
952 | if (hid->collection->usage == HID_GD_MOUSE && hid_mousepoll_interval > 0) | |
953 | interval = hid_mousepoll_interval; | |
05f091ab | 954 | |
c500c971 | 955 | ret = -ENOMEM; |
0f12aa03 | 956 | if (usb_endpoint_dir_in(endpoint)) { |
4916b3a5 | 957 | if (usbhid->urbin) |
1da177e4 | 958 | continue; |
4916b3a5 | 959 | if (!(usbhid->urbin = usb_alloc_urb(0, GFP_KERNEL))) |
1da177e4 LT |
960 | goto fail; |
961 | pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress); | |
4916b3a5 | 962 | usb_fill_int_urb(usbhid->urbin, dev, pipe, usbhid->inbuf, insize, |
1da177e4 | 963 | hid_irq_in, hid, interval); |
4916b3a5 JK |
964 | usbhid->urbin->transfer_dma = usbhid->inbuf_dma; |
965 | usbhid->urbin->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
1da177e4 | 966 | } else { |
4916b3a5 | 967 | if (usbhid->urbout) |
1da177e4 | 968 | continue; |
4916b3a5 | 969 | if (!(usbhid->urbout = usb_alloc_urb(0, GFP_KERNEL))) |
1da177e4 LT |
970 | goto fail; |
971 | pipe = usb_sndintpipe(dev, endpoint->bEndpointAddress); | |
4916b3a5 | 972 | usb_fill_int_urb(usbhid->urbout, dev, pipe, usbhid->outbuf, 0, |
1da177e4 | 973 | hid_irq_out, hid, interval); |
4916b3a5 JK |
974 | usbhid->urbout->transfer_dma = usbhid->outbuf_dma; |
975 | usbhid->urbout->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
1da177e4 LT |
976 | } |
977 | } | |
978 | ||
1d1bdd20 | 979 | init_waitqueue_head(&usbhid->wait); |
4916b3a5 | 980 | INIT_WORK(&usbhid->reset_work, hid_reset); |
0361a28d | 981 | INIT_WORK(&usbhid->restart_work, __usbhid_restart_queues); |
4916b3a5 | 982 | setup_timer(&usbhid->io_retry, hid_retry_timeout, (unsigned long) hid); |
aef4e266 | 983 | |
0361a28d | 984 | spin_lock_init(&usbhid->lock); |
1da177e4 | 985 | |
4916b3a5 JK |
986 | usbhid->intf = intf; |
987 | usbhid->ifnum = interface->desc.bInterfaceNumber; | |
1da177e4 | 988 | |
4916b3a5 | 989 | usbhid->urbctrl = usb_alloc_urb(0, GFP_KERNEL); |
c500c971 JS |
990 | if (!usbhid->urbctrl) { |
991 | ret = -ENOMEM; | |
1da177e4 | 992 | goto fail; |
c500c971 | 993 | } |
c5b7c7c3 | 994 | |
4916b3a5 JK |
995 | usb_fill_control_urb(usbhid->urbctrl, dev, 0, (void *) usbhid->cr, |
996 | usbhid->ctrlbuf, 1, hid_ctrl, hid); | |
997 | usbhid->urbctrl->setup_dma = usbhid->cr_dma; | |
998 | usbhid->urbctrl->transfer_dma = usbhid->ctrlbuf_dma; | |
999 | usbhid->urbctrl->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP | URB_NO_SETUP_DMA_MAP); | |
c500c971 | 1000 | |
93c10132 | 1001 | usbhid_init_reports(hid); |
93c10132 | 1002 | |
3d5afd32 | 1003 | set_bit(HID_STARTED, &usbhid->iofl); |
3d5afd32 | 1004 | |
08ef08ee AS |
1005 | /* Some keyboards don't work until their LEDs have been set. |
1006 | * Since BIOSes do set the LEDs, it must be safe for any device | |
1007 | * that supports the keyboard boot protocol. | |
1008 | */ | |
1009 | if (interface->desc.bInterfaceSubClass == USB_INTERFACE_SUBCLASS_BOOT && | |
1010 | interface->desc.bInterfaceProtocol == | |
1011 | USB_INTERFACE_PROTOCOL_KEYBOARD) | |
1012 | usbhid_set_leds(hid); | |
1013 | ||
c500c971 | 1014 | return 0; |
1da177e4 LT |
1015 | |
1016 | fail: | |
4916b3a5 JK |
1017 | usb_free_urb(usbhid->urbin); |
1018 | usb_free_urb(usbhid->urbout); | |
1019 | usb_free_urb(usbhid->urbctrl); | |
e3e14de5 JS |
1020 | usbhid->urbin = NULL; |
1021 | usbhid->urbout = NULL; | |
1022 | usbhid->urbctrl = NULL; | |
22f675f3 | 1023 | hid_free_buffers(dev, hid); |
c500c971 | 1024 | return ret; |
1da177e4 LT |
1025 | } |
1026 | ||
c500c971 | 1027 | static void usbhid_stop(struct hid_device *hid) |
1da177e4 | 1028 | { |
c500c971 | 1029 | struct usbhid_device *usbhid = hid->driver_data; |
1da177e4 | 1030 | |
c500c971 | 1031 | if (WARN_ON(!usbhid)) |
1da177e4 LT |
1032 | return; |
1033 | ||
3d5afd32 | 1034 | clear_bit(HID_STARTED, &usbhid->iofl); |
0361a28d | 1035 | spin_lock_irq(&usbhid->lock); /* Sync with error handler */ |
69626f23 | 1036 | set_bit(HID_DISCONNECTED, &usbhid->iofl); |
0361a28d | 1037 | spin_unlock_irq(&usbhid->lock); |
4916b3a5 JK |
1038 | usb_kill_urb(usbhid->urbin); |
1039 | usb_kill_urb(usbhid->urbout); | |
1040 | usb_kill_urb(usbhid->urbctrl); | |
1da177e4 | 1041 | |
0361a28d | 1042 | hid_cancel_delayed_stuff(usbhid); |
aef4e266 | 1043 | |
c500c971 JS |
1044 | hid->claimed = 0; |
1045 | ||
4916b3a5 JK |
1046 | usb_free_urb(usbhid->urbin); |
1047 | usb_free_urb(usbhid->urbctrl); | |
1048 | usb_free_urb(usbhid->urbout); | |
e3e14de5 JS |
1049 | usbhid->urbin = NULL; /* don't mess up next start */ |
1050 | usbhid->urbctrl = NULL; | |
1051 | usbhid->urbout = NULL; | |
1da177e4 | 1052 | |
be820975 | 1053 | hid_free_buffers(hid_to_usb_dev(hid), hid); |
1da177e4 LT |
1054 | } |
1055 | ||
0361a28d ON |
1056 | static int usbhid_power(struct hid_device *hid, int lvl) |
1057 | { | |
1058 | int r = 0; | |
1059 | ||
1060 | switch (lvl) { | |
1061 | case PM_HINT_FULLON: | |
1062 | r = usbhid_get_power(hid); | |
1063 | break; | |
1064 | case PM_HINT_NORMAL: | |
1065 | usbhid_put_power(hid); | |
1066 | break; | |
1067 | } | |
1068 | return r; | |
1069 | } | |
1070 | ||
c500c971 JS |
1071 | static struct hid_ll_driver usb_hid_driver = { |
1072 | .parse = usbhid_parse, | |
1073 | .start = usbhid_start, | |
1074 | .stop = usbhid_stop, | |
1075 | .open = usbhid_open, | |
1076 | .close = usbhid_close, | |
0361a28d | 1077 | .power = usbhid_power, |
c500c971 JS |
1078 | .hidinput_input_event = usb_hidinput_input_event, |
1079 | }; | |
1080 | ||
c4c259bc | 1081 | static int usbhid_probe(struct usb_interface *intf, const struct usb_device_id *id) |
1da177e4 | 1082 | { |
131d3a7a | 1083 | struct usb_host_interface *interface = intf->cur_altsetting; |
c500c971 | 1084 | struct usb_device *dev = interface_to_usbdev(intf); |
3d5afd32 | 1085 | struct usbhid_device *usbhid; |
1da177e4 | 1086 | struct hid_device *hid; |
131d3a7a | 1087 | unsigned int n, has_in = 0; |
c500c971 JS |
1088 | size_t len; |
1089 | int ret; | |
1da177e4 | 1090 | |
58037eb9 | 1091 | dbg_hid("HID probe called for ifnum %d\n", |
1da177e4 LT |
1092 | intf->altsetting->desc.bInterfaceNumber); |
1093 | ||
131d3a7a JS |
1094 | for (n = 0; n < interface->desc.bNumEndpoints; n++) |
1095 | if (usb_endpoint_is_int_in(&interface->endpoint[n].desc)) | |
1096 | has_in++; | |
1097 | if (!has_in) { | |
1098 | dev_err(&intf->dev, "couldn't find an input interrupt " | |
1099 | "endpoint\n"); | |
1100 | return -ENODEV; | |
1101 | } | |
1102 | ||
c500c971 JS |
1103 | hid = hid_allocate_device(); |
1104 | if (IS_ERR(hid)) | |
1105 | return PTR_ERR(hid); | |
1da177e4 LT |
1106 | |
1107 | usb_set_intfdata(intf, hid); | |
c500c971 JS |
1108 | hid->ll_driver = &usb_hid_driver; |
1109 | hid->hid_output_raw_report = usbhid_output_raw_report; | |
76483cf4 | 1110 | hid->ff_init = hid_pidff_init; |
c500c971 | 1111 | #ifdef CONFIG_USB_HIDDEV |
93c10132 | 1112 | hid->hiddev_connect = hiddev_connect; |
c4c259bc | 1113 | hid->hiddev_disconnect = hiddev_disconnect; |
c500c971 JS |
1114 | hid->hiddev_hid_event = hiddev_hid_event; |
1115 | hid->hiddev_report_event = hiddev_report_event; | |
1116 | #endif | |
1117 | hid->dev.parent = &intf->dev; | |
1118 | hid->bus = BUS_USB; | |
1119 | hid->vendor = le16_to_cpu(dev->descriptor.idVendor); | |
1120 | hid->product = le16_to_cpu(dev->descriptor.idProduct); | |
1121 | hid->name[0] = 0; | |
a73a6370 JS |
1122 | if (intf->cur_altsetting->desc.bInterfaceProtocol == |
1123 | USB_INTERFACE_PROTOCOL_MOUSE) | |
1124 | hid->type = HID_TYPE_USBMOUSE; | |
1da177e4 | 1125 | |
c500c971 JS |
1126 | if (dev->manufacturer) |
1127 | strlcpy(hid->name, dev->manufacturer, sizeof(hid->name)); | |
1da177e4 | 1128 | |
c500c971 JS |
1129 | if (dev->product) { |
1130 | if (dev->manufacturer) | |
1131 | strlcat(hid->name, " ", sizeof(hid->name)); | |
1132 | strlcat(hid->name, dev->product, sizeof(hid->name)); | |
1da177e4 LT |
1133 | } |
1134 | ||
c500c971 JS |
1135 | if (!strlen(hid->name)) |
1136 | snprintf(hid->name, sizeof(hid->name), "HID %04x:%04x", | |
1137 | le16_to_cpu(dev->descriptor.idVendor), | |
1138 | le16_to_cpu(dev->descriptor.idProduct)); | |
1da177e4 | 1139 | |
c500c971 JS |
1140 | usb_make_path(dev, hid->phys, sizeof(hid->phys)); |
1141 | strlcat(hid->phys, "/input", sizeof(hid->phys)); | |
1142 | len = strlen(hid->phys); | |
1143 | if (len < sizeof(hid->phys) - 1) | |
1144 | snprintf(hid->phys + len, sizeof(hid->phys) - len, | |
1145 | "%d", intf->altsetting[0].desc.bInterfaceNumber); | |
1146 | ||
1147 | if (usb_string(dev, dev->descriptor.iSerialNumber, hid->uniq, 64) <= 0) | |
1148 | hid->uniq[0] = 0; | |
1da177e4 | 1149 | |
3d5afd32 JS |
1150 | usbhid = kzalloc(sizeof(*usbhid), GFP_KERNEL); |
1151 | if (usbhid == NULL) { | |
1152 | ret = -ENOMEM; | |
1153 | goto err; | |
1154 | } | |
1155 | ||
1156 | hid->driver_data = usbhid; | |
1157 | usbhid->hid = hid; | |
3d5afd32 | 1158 | |
85cdaf52 JS |
1159 | ret = hid_add_device(hid); |
1160 | if (ret) { | |
d458a9df JS |
1161 | if (ret != -ENODEV) |
1162 | dev_err(&intf->dev, "can't add hid device: %d\n", ret); | |
3d5afd32 | 1163 | goto err_free; |
85cdaf52 | 1164 | } |
c500c971 JS |
1165 | |
1166 | return 0; | |
3d5afd32 JS |
1167 | err_free: |
1168 | kfree(usbhid); | |
c500c971 JS |
1169 | err: |
1170 | hid_destroy_device(hid); | |
85cdaf52 | 1171 | return ret; |
1da177e4 LT |
1172 | } |
1173 | ||
c4c259bc | 1174 | static void usbhid_disconnect(struct usb_interface *intf) |
c500c971 JS |
1175 | { |
1176 | struct hid_device *hid = usb_get_intfdata(intf); | |
3d5afd32 | 1177 | struct usbhid_device *usbhid; |
c500c971 JS |
1178 | |
1179 | if (WARN_ON(!hid)) | |
1180 | return; | |
1181 | ||
3d5afd32 | 1182 | usbhid = hid->driver_data; |
c500c971 | 1183 | hid_destroy_device(hid); |
3d5afd32 | 1184 | kfree(usbhid); |
c500c971 JS |
1185 | } |
1186 | ||
0361a28d ON |
1187 | static void hid_cancel_delayed_stuff(struct usbhid_device *usbhid) |
1188 | { | |
1189 | del_timer_sync(&usbhid->io_retry); | |
1190 | cancel_work_sync(&usbhid->restart_work); | |
1191 | cancel_work_sync(&usbhid->reset_work); | |
1192 | } | |
1193 | ||
1194 | static void hid_cease_io(struct usbhid_device *usbhid) | |
1195 | { | |
1196 | del_timer(&usbhid->io_retry); | |
1197 | usb_kill_urb(usbhid->urbin); | |
1198 | usb_kill_urb(usbhid->urbctrl); | |
1199 | usb_kill_urb(usbhid->urbout); | |
0361a28d ON |
1200 | } |
1201 | ||
ae2f0074 JK |
1202 | /* Treat USB reset pretty much the same as suspend/resume */ |
1203 | static int hid_pre_reset(struct usb_interface *intf) | |
1204 | { | |
1205 | struct hid_device *hid = usb_get_intfdata(intf); | |
1206 | struct usbhid_device *usbhid = hid->driver_data; | |
1207 | ||
1208 | spin_lock_irq(&usbhid->lock); | |
1209 | set_bit(HID_RESET_PENDING, &usbhid->iofl); | |
1210 | spin_unlock_irq(&usbhid->lock); | |
6d779768 | 1211 | cancel_work_sync(&usbhid->restart_work); |
ae2f0074 JK |
1212 | hid_cease_io(usbhid); |
1213 | ||
1214 | return 0; | |
1215 | } | |
1216 | ||
1217 | /* Same routine used for post_reset and reset_resume */ | |
1218 | static int hid_post_reset(struct usb_interface *intf) | |
1219 | { | |
1220 | struct usb_device *dev = interface_to_usbdev (intf); | |
1221 | struct hid_device *hid = usb_get_intfdata(intf); | |
1222 | struct usbhid_device *usbhid = hid->driver_data; | |
1223 | int status; | |
70fa9f2e | 1224 | |
ae2f0074 JK |
1225 | spin_lock_irq(&usbhid->lock); |
1226 | clear_bit(HID_RESET_PENDING, &usbhid->iofl); | |
1227 | spin_unlock_irq(&usbhid->lock); | |
1228 | hid_set_idle(dev, intf->cur_altsetting->desc.bInterfaceNumber, 0, 0); | |
ae2f0074 JK |
1229 | status = hid_start_in(hid); |
1230 | if (status < 0) | |
1231 | hid_io_error(hid); | |
1232 | usbhid_restart_queues(usbhid); | |
1233 | ||
1234 | return 0; | |
1235 | } | |
1236 | ||
1237 | int usbhid_get_power(struct hid_device *hid) | |
1238 | { | |
1239 | struct usbhid_device *usbhid = hid->driver_data; | |
70fa9f2e | 1240 | |
ae2f0074 JK |
1241 | return usb_autopm_get_interface(usbhid->intf); |
1242 | } | |
1243 | ||
1244 | void usbhid_put_power(struct hid_device *hid) | |
1245 | { | |
1246 | struct usbhid_device *usbhid = hid->driver_data; | |
70fa9f2e | 1247 | |
ae2f0074 JK |
1248 | usb_autopm_put_interface(usbhid->intf); |
1249 | } | |
1250 | ||
1251 | ||
0f6f1407 | 1252 | #ifdef CONFIG_PM |
27d72e85 | 1253 | static int hid_suspend(struct usb_interface *intf, pm_message_t message) |
1da177e4 | 1254 | { |
0361a28d | 1255 | struct hid_device *hid = usb_get_intfdata(intf); |
4916b3a5 | 1256 | struct usbhid_device *usbhid = hid->driver_data; |
0361a28d ON |
1257 | struct usb_device *udev = interface_to_usbdev(intf); |
1258 | int status; | |
1da177e4 | 1259 | |
0361a28d ON |
1260 | if (udev->auto_pm) { |
1261 | spin_lock_irq(&usbhid->lock); /* Sync with error handler */ | |
1262 | if (!test_bit(HID_RESET_PENDING, &usbhid->iofl) | |
1263 | && !test_bit(HID_CLEAR_HALT, &usbhid->iofl) | |
1264 | && !test_bit(HID_OUT_RUNNING, &usbhid->iofl) | |
1265 | && !test_bit(HID_CTRL_RUNNING, &usbhid->iofl) | |
1266 | && !test_bit(HID_KEYS_PRESSED, &usbhid->iofl) | |
1267 | && (!usbhid->ledcount || ignoreled)) | |
1268 | { | |
1269 | set_bit(HID_REPORTED_IDLE, &usbhid->iofl); | |
1270 | spin_unlock_irq(&usbhid->lock); | |
1271 | } else { | |
1272 | usbhid_mark_busy(usbhid); | |
1273 | spin_unlock_irq(&usbhid->lock); | |
1274 | return -EBUSY; | |
1275 | } | |
3d5afd32 | 1276 | |
0361a28d ON |
1277 | } else { |
1278 | spin_lock_irq(&usbhid->lock); | |
1279 | set_bit(HID_REPORTED_IDLE, &usbhid->iofl); | |
1280 | spin_unlock_irq(&usbhid->lock); | |
1281 | if (usbhid_wait_io(hid) < 0) | |
1282 | return -EIO; | |
1283 | } | |
1284 | ||
1285 | if (!ignoreled && udev->auto_pm) { | |
1286 | spin_lock_irq(&usbhid->lock); | |
1287 | if (test_bit(HID_LED_ON, &usbhid->iofl)) { | |
1288 | spin_unlock_irq(&usbhid->lock); | |
1289 | usbhid_mark_busy(usbhid); | |
1290 | return -EBUSY; | |
1291 | } | |
1292 | spin_unlock_irq(&usbhid->lock); | |
1293 | } | |
1294 | ||
1295 | hid_cancel_delayed_stuff(usbhid); | |
1296 | hid_cease_io(usbhid); | |
1297 | ||
1298 | if (udev->auto_pm && test_bit(HID_KEYS_PRESSED, &usbhid->iofl)) { | |
1299 | /* lost race against keypresses */ | |
1300 | status = hid_start_in(hid); | |
1301 | if (status < 0) | |
1302 | hid_io_error(hid); | |
1303 | usbhid_mark_busy(usbhid); | |
1304 | return -EBUSY; | |
1305 | } | |
1da177e4 LT |
1306 | dev_dbg(&intf->dev, "suspend\n"); |
1307 | return 0; | |
1308 | } | |
1309 | ||
1310 | static int hid_resume(struct usb_interface *intf) | |
1311 | { | |
1312 | struct hid_device *hid = usb_get_intfdata (intf); | |
4916b3a5 | 1313 | struct usbhid_device *usbhid = hid->driver_data; |
1da177e4 LT |
1314 | int status; |
1315 | ||
fde5be35 | 1316 | if (!test_bit(HID_STARTED, &usbhid->iofl)) |
3d5afd32 | 1317 | return 0; |
3d5afd32 | 1318 | |
0361a28d ON |
1319 | clear_bit(HID_REPORTED_IDLE, &usbhid->iofl); |
1320 | usbhid_mark_busy(usbhid); | |
1321 | ||
1322 | if (test_bit(HID_CLEAR_HALT, &usbhid->iofl) || | |
1323 | test_bit(HID_RESET_PENDING, &usbhid->iofl)) | |
1324 | schedule_work(&usbhid->reset_work); | |
4916b3a5 | 1325 | usbhid->retry_delay = 0; |
aef4e266 | 1326 | status = hid_start_in(hid); |
0361a28d ON |
1327 | if (status < 0) |
1328 | hid_io_error(hid); | |
1329 | usbhid_restart_queues(usbhid); | |
1da177e4 | 1330 | |
1da177e4 | 1331 | dev_dbg(&intf->dev, "resume status %d\n", status); |
f07600cf | 1332 | return 0; |
df9a1f48 AS |
1333 | } |
1334 | ||
378a0ede | 1335 | static int hid_reset_resume(struct usb_interface *intf) |
df9a1f48 | 1336 | { |
378a0ede ON |
1337 | struct hid_device *hid = usb_get_intfdata(intf); |
1338 | struct usbhid_device *usbhid = hid->driver_data; | |
df9a1f48 | 1339 | |
378a0ede ON |
1340 | clear_bit(HID_REPORTED_IDLE, &usbhid->iofl); |
1341 | return hid_post_reset(intf); | |
df9a1f48 AS |
1342 | } |
1343 | ||
ae2f0074 | 1344 | #endif /* CONFIG_PM */ |
df9a1f48 | 1345 | |
1da177e4 LT |
1346 | static struct usb_device_id hid_usb_ids [] = { |
1347 | { .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS, | |
1348 | .bInterfaceClass = USB_INTERFACE_CLASS_HID }, | |
1349 | { } /* Terminating entry */ | |
1350 | }; | |
1351 | ||
1352 | MODULE_DEVICE_TABLE (usb, hid_usb_ids); | |
1353 | ||
1354 | static struct usb_driver hid_driver = { | |
1da177e4 | 1355 | .name = "usbhid", |
c4c259bc JK |
1356 | .probe = usbhid_probe, |
1357 | .disconnect = usbhid_disconnect, | |
0f6f1407 | 1358 | #ifdef CONFIG_PM |
1da177e4 LT |
1359 | .suspend = hid_suspend, |
1360 | .resume = hid_resume, | |
378a0ede | 1361 | .reset_resume = hid_reset_resume, |
0f6f1407 | 1362 | #endif |
df9a1f48 AS |
1363 | .pre_reset = hid_pre_reset, |
1364 | .post_reset = hid_post_reset, | |
1da177e4 | 1365 | .id_table = hid_usb_ids, |
933e3187 | 1366 | .supports_autosuspend = 1, |
1da177e4 LT |
1367 | }; |
1368 | ||
85cdaf52 JS |
1369 | static const struct hid_device_id hid_usb_table[] = { |
1370 | { HID_USB_DEVICE(HID_ANY_ID, HID_ANY_ID) }, | |
1371 | { } | |
1372 | }; | |
1373 | ||
1374 | static struct hid_driver hid_usb_driver = { | |
1375 | .name = "generic-usb", | |
1376 | .id_table = hid_usb_table, | |
1377 | }; | |
1378 | ||
1da177e4 LT |
1379 | static int __init hid_init(void) |
1380 | { | |
0361a28d ON |
1381 | int retval = -ENOMEM; |
1382 | ||
1383 | resumption_waker = create_freezeable_workqueue("usbhid_resumer"); | |
1384 | if (!resumption_waker) | |
1385 | goto no_queue; | |
85cdaf52 JS |
1386 | retval = hid_register_driver(&hid_usb_driver); |
1387 | if (retval) | |
1388 | goto hid_register_fail; | |
876b9276 PW |
1389 | retval = usbhid_quirks_init(quirks_param); |
1390 | if (retval) | |
1391 | goto usbhid_quirks_init_fail; | |
1da177e4 LT |
1392 | retval = hiddev_init(); |
1393 | if (retval) | |
1394 | goto hiddev_init_fail; | |
1395 | retval = usb_register(&hid_driver); | |
1396 | if (retval) | |
1397 | goto usb_register_fail; | |
ddbe3249 GKH |
1398 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
1399 | DRIVER_DESC "\n"); | |
1da177e4 LT |
1400 | |
1401 | return 0; | |
1402 | usb_register_fail: | |
1403 | hiddev_exit(); | |
1404 | hiddev_init_fail: | |
876b9276 PW |
1405 | usbhid_quirks_exit(); |
1406 | usbhid_quirks_init_fail: | |
85cdaf52 JS |
1407 | hid_unregister_driver(&hid_usb_driver); |
1408 | hid_register_fail: | |
0361a28d ON |
1409 | destroy_workqueue(resumption_waker); |
1410 | no_queue: | |
1da177e4 LT |
1411 | return retval; |
1412 | } | |
1413 | ||
1414 | static void __exit hid_exit(void) | |
1415 | { | |
1416 | usb_deregister(&hid_driver); | |
1417 | hiddev_exit(); | |
876b9276 | 1418 | usbhid_quirks_exit(); |
85cdaf52 | 1419 | hid_unregister_driver(&hid_usb_driver); |
0361a28d | 1420 | destroy_workqueue(resumption_waker); |
1da177e4 LT |
1421 | } |
1422 | ||
1423 | module_init(hid_init); | |
1424 | module_exit(hid_exit); | |
1425 | ||
1426 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
1427 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1428 | MODULE_LICENSE(DRIVER_LICENSE); |