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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" |
1da177e4 LT |
45 | #define DRIVER_DESC "USB HID core driver" |
46 | #define DRIVER_LICENSE "GPL" | |
47 | ||
1da177e4 LT |
48 | /* |
49 | * Module parameters. | |
50 | */ | |
51 | ||
52 | static unsigned int hid_mousepoll_interval; | |
53 | module_param_named(mousepoll, hid_mousepoll_interval, uint, 0644); | |
54 | MODULE_PARM_DESC(mousepoll, "Polling interval of mice"); | |
55 | ||
0361a28d ON |
56 | static unsigned int ignoreled; |
57 | module_param_named(ignoreled, ignoreled, uint, 0644); | |
58 | MODULE_PARM_DESC(ignoreled, "Autosuspend with active leds"); | |
59 | ||
876b9276 PW |
60 | /* Quirks specified at module load time */ |
61 | static char *quirks_param[MAX_USBHID_BOOT_QUIRKS] = { [ 0 ... (MAX_USBHID_BOOT_QUIRKS - 1) ] = NULL }; | |
62 | module_param_array_named(quirks, quirks_param, charp, NULL, 0444); | |
63 | MODULE_PARM_DESC(quirks, "Add/modify USB HID quirks by specifying " | |
64 | " quirks=vendorID:productID:quirks" | |
65 | " where vendorID, productID, and quirks are all in" | |
66 | " 0x-prefixed hex"); | |
1da177e4 | 67 | /* |
48b4554a | 68 | * Input submission and I/O error handler. |
1da177e4 | 69 | */ |
0361a28d ON |
70 | static DEFINE_MUTEX(hid_open_mut); |
71 | static struct workqueue_struct *resumption_waker; | |
1da177e4 | 72 | |
48b4554a | 73 | static void hid_io_error(struct hid_device *hid); |
0361a28d ON |
74 | static int hid_submit_out(struct hid_device *hid); |
75 | static int hid_submit_ctrl(struct hid_device *hid); | |
76 | static void hid_cancel_delayed_stuff(struct usbhid_device *usbhid); | |
48b4554a JK |
77 | |
78 | /* Start up the input URB */ | |
79 | static int hid_start_in(struct hid_device *hid) | |
1da177e4 | 80 | { |
1da177e4 | 81 | unsigned long flags; |
48b4554a JK |
82 | int rc = 0; |
83 | struct usbhid_device *usbhid = hid->driver_data; | |
1da177e4 | 84 | |
0361a28d ON |
85 | spin_lock_irqsave(&usbhid->lock, flags); |
86 | if (hid->open > 0 && | |
69626f23 | 87 | !test_bit(HID_DISCONNECTED, &usbhid->iofl) && |
0361a28d | 88 | !test_bit(HID_REPORTED_IDLE, &usbhid->iofl) && |
48b4554a JK |
89 | !test_and_set_bit(HID_IN_RUNNING, &usbhid->iofl)) { |
90 | rc = usb_submit_urb(usbhid->urbin, GFP_ATOMIC); | |
91 | if (rc != 0) | |
92 | clear_bit(HID_IN_RUNNING, &usbhid->iofl); | |
1da177e4 | 93 | } |
0361a28d | 94 | spin_unlock_irqrestore(&usbhid->lock, flags); |
48b4554a | 95 | return rc; |
1da177e4 LT |
96 | } |
97 | ||
48b4554a JK |
98 | /* I/O retry timer routine */ |
99 | static void hid_retry_timeout(unsigned long _hid) | |
1da177e4 | 100 | { |
48b4554a | 101 | struct hid_device *hid = (struct hid_device *) _hid; |
4916b3a5 | 102 | struct usbhid_device *usbhid = hid->driver_data; |
1da177e4 | 103 | |
48b4554a JK |
104 | dev_dbg(&usbhid->intf->dev, "retrying intr urb\n"); |
105 | if (hid_start_in(hid)) | |
106 | hid_io_error(hid); | |
1da177e4 LT |
107 | } |
108 | ||
48b4554a JK |
109 | /* Workqueue routine to reset the device or clear a halt */ |
110 | static void hid_reset(struct work_struct *work) | |
1da177e4 | 111 | { |
48b4554a JK |
112 | struct usbhid_device *usbhid = |
113 | container_of(work, struct usbhid_device, reset_work); | |
114 | struct hid_device *hid = usbhid->hid; | |
011b15df | 115 | int rc = 0; |
1da177e4 | 116 | |
48b4554a JK |
117 | if (test_bit(HID_CLEAR_HALT, &usbhid->iofl)) { |
118 | dev_dbg(&usbhid->intf->dev, "clear halt\n"); | |
119 | rc = usb_clear_halt(hid_to_usb_dev(hid), usbhid->urbin->pipe); | |
120 | clear_bit(HID_CLEAR_HALT, &usbhid->iofl); | |
121 | hid_start_in(hid); | |
122 | } | |
1da177e4 | 123 | |
48b4554a JK |
124 | else if (test_bit(HID_RESET_PENDING, &usbhid->iofl)) { |
125 | dev_dbg(&usbhid->intf->dev, "resetting device\n"); | |
011b15df AS |
126 | rc = usb_lock_device_for_reset(hid_to_usb_dev(hid), usbhid->intf); |
127 | if (rc == 0) { | |
742120c6 | 128 | rc = usb_reset_device(hid_to_usb_dev(hid)); |
011b15df | 129 | usb_unlock_device(hid_to_usb_dev(hid)); |
1da177e4 | 130 | } |
48b4554a | 131 | clear_bit(HID_RESET_PENDING, &usbhid->iofl); |
1da177e4 LT |
132 | } |
133 | ||
48b4554a JK |
134 | switch (rc) { |
135 | case 0: | |
136 | if (!test_bit(HID_IN_RUNNING, &usbhid->iofl)) | |
137 | hid_io_error(hid); | |
138 | break; | |
139 | default: | |
58037eb9 | 140 | err_hid("can't reset device, %s-%s/input%d, status %d", |
48b4554a JK |
141 | hid_to_usb_dev(hid)->bus->bus_name, |
142 | hid_to_usb_dev(hid)->devpath, | |
143 | usbhid->ifnum, rc); | |
144 | /* FALLTHROUGH */ | |
145 | case -EHOSTUNREACH: | |
146 | case -ENODEV: | |
147 | case -EINTR: | |
148 | break; | |
1da177e4 | 149 | } |
1da177e4 LT |
150 | } |
151 | ||
48b4554a JK |
152 | /* Main I/O error handler */ |
153 | static void hid_io_error(struct hid_device *hid) | |
dde5845a | 154 | { |
48b4554a JK |
155 | unsigned long flags; |
156 | struct usbhid_device *usbhid = hid->driver_data; | |
dde5845a | 157 | |
0361a28d | 158 | spin_lock_irqsave(&usbhid->lock, flags); |
dde5845a | 159 | |
48b4554a | 160 | /* Stop when disconnected */ |
69626f23 | 161 | if (test_bit(HID_DISCONNECTED, &usbhid->iofl)) |
48b4554a | 162 | goto done; |
dde5845a | 163 | |
5e2a55f2 AS |
164 | /* If it has been a while since the last error, we'll assume |
165 | * this a brand new error and reset the retry timeout. */ | |
166 | if (time_after(jiffies, usbhid->stop_retry + HZ/2)) | |
167 | usbhid->retry_delay = 0; | |
168 | ||
48b4554a JK |
169 | /* When an error occurs, retry at increasing intervals */ |
170 | if (usbhid->retry_delay == 0) { | |
171 | usbhid->retry_delay = 13; /* Then 26, 52, 104, 104, ... */ | |
172 | usbhid->stop_retry = jiffies + msecs_to_jiffies(1000); | |
173 | } else if (usbhid->retry_delay < 100) | |
174 | usbhid->retry_delay *= 2; | |
dde5845a | 175 | |
48b4554a | 176 | if (time_after(jiffies, usbhid->stop_retry)) { |
4916b3a5 | 177 | |
48b4554a JK |
178 | /* Retries failed, so do a port reset */ |
179 | if (!test_and_set_bit(HID_RESET_PENDING, &usbhid->iofl)) { | |
180 | schedule_work(&usbhid->reset_work); | |
181 | goto done; | |
182 | } | |
1da177e4 LT |
183 | } |
184 | ||
48b4554a JK |
185 | mod_timer(&usbhid->io_retry, |
186 | jiffies + msecs_to_jiffies(usbhid->retry_delay)); | |
187 | done: | |
0361a28d ON |
188 | spin_unlock_irqrestore(&usbhid->lock, flags); |
189 | } | |
190 | ||
191 | static void usbhid_mark_busy(struct usbhid_device *usbhid) | |
192 | { | |
193 | struct usb_interface *intf = usbhid->intf; | |
194 | ||
195 | usb_mark_last_busy(interface_to_usbdev(intf)); | |
196 | } | |
197 | ||
198 | static int usbhid_restart_out_queue(struct usbhid_device *usbhid) | |
199 | { | |
200 | struct hid_device *hid = usb_get_intfdata(usbhid->intf); | |
201 | int kicked; | |
202 | ||
203 | if (!hid) | |
204 | return 0; | |
205 | ||
206 | if ((kicked = (usbhid->outhead != usbhid->outtail))) { | |
207 | dbg("Kicking head %d tail %d", usbhid->outhead, usbhid->outtail); | |
208 | if (hid_submit_out(hid)) { | |
209 | clear_bit(HID_OUT_RUNNING, &usbhid->iofl); | |
210 | wake_up(&usbhid->wait); | |
211 | } | |
212 | } | |
213 | return kicked; | |
214 | } | |
215 | ||
216 | static int usbhid_restart_ctrl_queue(struct usbhid_device *usbhid) | |
217 | { | |
218 | struct hid_device *hid = usb_get_intfdata(usbhid->intf); | |
219 | int kicked; | |
220 | ||
221 | WARN_ON(hid == NULL); | |
222 | if (!hid) | |
223 | return 0; | |
224 | ||
225 | if ((kicked = (usbhid->ctrlhead != usbhid->ctrltail))) { | |
226 | dbg("Kicking head %d tail %d", usbhid->ctrlhead, usbhid->ctrltail); | |
227 | if (hid_submit_ctrl(hid)) { | |
228 | clear_bit(HID_CTRL_RUNNING, &usbhid->iofl); | |
229 | wake_up(&usbhid->wait); | |
230 | } | |
231 | } | |
232 | return kicked; | |
1da177e4 LT |
233 | } |
234 | ||
48b4554a JK |
235 | /* |
236 | * Input interrupt completion handler. | |
237 | */ | |
854561b0 | 238 | |
48b4554a | 239 | static void hid_irq_in(struct urb *urb) |
1da177e4 | 240 | { |
48b4554a JK |
241 | struct hid_device *hid = urb->context; |
242 | struct usbhid_device *usbhid = hid->driver_data; | |
243 | int status; | |
1da177e4 | 244 | |
48b4554a | 245 | switch (urb->status) { |
880d29f1 | 246 | case 0: /* success */ |
0361a28d | 247 | usbhid_mark_busy(usbhid); |
880d29f1 JS |
248 | usbhid->retry_delay = 0; |
249 | hid_input_report(urb->context, HID_INPUT_REPORT, | |
250 | urb->transfer_buffer, | |
251 | urb->actual_length, 1); | |
0361a28d ON |
252 | /* |
253 | * autosuspend refused while keys are pressed | |
254 | * because most keyboards don't wake up when | |
255 | * a key is released | |
256 | */ | |
257 | if (hid_check_keys_pressed(hid)) | |
258 | set_bit(HID_KEYS_PRESSED, &usbhid->iofl); | |
259 | else | |
260 | clear_bit(HID_KEYS_PRESSED, &usbhid->iofl); | |
880d29f1 JS |
261 | break; |
262 | case -EPIPE: /* stall */ | |
0361a28d | 263 | usbhid_mark_busy(usbhid); |
880d29f1 JS |
264 | clear_bit(HID_IN_RUNNING, &usbhid->iofl); |
265 | set_bit(HID_CLEAR_HALT, &usbhid->iofl); | |
266 | schedule_work(&usbhid->reset_work); | |
267 | return; | |
268 | case -ECONNRESET: /* unlink */ | |
269 | case -ENOENT: | |
270 | case -ESHUTDOWN: /* unplug */ | |
271 | clear_bit(HID_IN_RUNNING, &usbhid->iofl); | |
272 | return; | |
273 | case -EILSEQ: /* protocol error or unplug */ | |
274 | case -EPROTO: /* protocol error or unplug */ | |
275 | case -ETIME: /* protocol error or unplug */ | |
276 | case -ETIMEDOUT: /* Should never happen, but... */ | |
0361a28d | 277 | usbhid_mark_busy(usbhid); |
880d29f1 JS |
278 | clear_bit(HID_IN_RUNNING, &usbhid->iofl); |
279 | hid_io_error(hid); | |
280 | return; | |
281 | default: /* error */ | |
7d89fe12 GKH |
282 | dev_warn(&urb->dev->dev, "input irq status %d " |
283 | "received\n", urb->status); | |
48b4554a | 284 | } |
1da177e4 | 285 | |
48b4554a JK |
286 | status = usb_submit_urb(urb, GFP_ATOMIC); |
287 | if (status) { | |
288 | clear_bit(HID_IN_RUNNING, &usbhid->iofl); | |
289 | if (status != -EPERM) { | |
58037eb9 | 290 | err_hid("can't resubmit intr, %s-%s/input%d, status %d", |
48b4554a JK |
291 | hid_to_usb_dev(hid)->bus->bus_name, |
292 | hid_to_usb_dev(hid)->devpath, | |
293 | usbhid->ifnum, status); | |
294 | hid_io_error(hid); | |
295 | } | |
296 | } | |
1da177e4 LT |
297 | } |
298 | ||
48b4554a | 299 | static int hid_submit_out(struct hid_device *hid) |
1da177e4 | 300 | { |
48b4554a | 301 | struct hid_report *report; |
f129ea6d | 302 | char *raw_report; |
4916b3a5 JK |
303 | struct usbhid_device *usbhid = hid->driver_data; |
304 | ||
f129ea6d AH |
305 | report = usbhid->out[usbhid->outtail].report; |
306 | raw_report = usbhid->out[usbhid->outtail].raw_report; | |
1da177e4 | 307 | |
0361a28d ON |
308 | if (!test_bit(HID_REPORTED_IDLE, &usbhid->iofl)) { |
309 | usbhid->urbout->transfer_buffer_length = ((report->size - 1) >> 3) + 1 + (report->id > 0); | |
310 | usbhid->urbout->dev = hid_to_usb_dev(hid); | |
311 | memcpy(usbhid->outbuf, raw_report, usbhid->urbout->transfer_buffer_length); | |
312 | kfree(raw_report); | |
1d3e2023 | 313 | |
0361a28d | 314 | dbg_hid("submitting out urb\n"); |
d57cdcff | 315 | |
0361a28d ON |
316 | if (usb_submit_urb(usbhid->urbout, GFP_ATOMIC)) { |
317 | err_hid("usb_submit_urb(out) failed"); | |
318 | return -1; | |
319 | } | |
320 | } else { | |
321 | /* | |
322 | * queue work to wake up the device. | |
323 | * as the work queue is freezeable, this is safe | |
324 | * with respect to STD and STR | |
325 | */ | |
326 | queue_work(resumption_waker, &usbhid->restart_work); | |
48b4554a | 327 | } |
1da177e4 | 328 | |
48b4554a JK |
329 | return 0; |
330 | } | |
331 | ||
332 | static int hid_submit_ctrl(struct hid_device *hid) | |
1da177e4 LT |
333 | { |
334 | struct hid_report *report; | |
48b4554a | 335 | unsigned char dir; |
f129ea6d | 336 | char *raw_report; |
48b4554a | 337 | int len; |
4916b3a5 | 338 | struct usbhid_device *usbhid = hid->driver_data; |
1da177e4 | 339 | |
48b4554a | 340 | report = usbhid->ctrl[usbhid->ctrltail].report; |
f129ea6d | 341 | raw_report = usbhid->ctrl[usbhid->ctrltail].raw_report; |
48b4554a | 342 | dir = usbhid->ctrl[usbhid->ctrltail].dir; |
1da177e4 | 343 | |
0361a28d ON |
344 | if (!test_bit(HID_REPORTED_IDLE, &usbhid->iofl)) { |
345 | len = ((report->size - 1) >> 3) + 1 + (report->id > 0); | |
346 | if (dir == USB_DIR_OUT) { | |
347 | usbhid->urbctrl->pipe = usb_sndctrlpipe(hid_to_usb_dev(hid), 0); | |
348 | usbhid->urbctrl->transfer_buffer_length = len; | |
349 | memcpy(usbhid->ctrlbuf, raw_report, len); | |
350 | kfree(raw_report); | |
351 | } else { | |
352 | int maxpacket, padlen; | |
353 | ||
354 | usbhid->urbctrl->pipe = usb_rcvctrlpipe(hid_to_usb_dev(hid), 0); | |
355 | maxpacket = usb_maxpacket(hid_to_usb_dev(hid), usbhid->urbctrl->pipe, 0); | |
356 | if (maxpacket > 0) { | |
357 | padlen = DIV_ROUND_UP(len, maxpacket); | |
358 | padlen *= maxpacket; | |
359 | if (padlen > usbhid->bufsize) | |
360 | padlen = usbhid->bufsize; | |
361 | } else | |
362 | padlen = 0; | |
363 | usbhid->urbctrl->transfer_buffer_length = padlen; | |
364 | } | |
365 | usbhid->urbctrl->dev = hid_to_usb_dev(hid); | |
1da177e4 | 366 | |
0361a28d ON |
367 | usbhid->cr->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE | dir; |
368 | usbhid->cr->bRequest = (dir == USB_DIR_OUT) ? HID_REQ_SET_REPORT : HID_REQ_GET_REPORT; | |
369 | usbhid->cr->wValue = cpu_to_le16(((report->type + 1) << 8) | report->id); | |
370 | usbhid->cr->wIndex = cpu_to_le16(usbhid->ifnum); | |
371 | usbhid->cr->wLength = cpu_to_le16(len); | |
1da177e4 | 372 | |
0361a28d ON |
373 | dbg_hid("submitting ctrl urb: %s wValue=0x%04x wIndex=0x%04x wLength=%u\n", |
374 | usbhid->cr->bRequest == HID_REQ_SET_REPORT ? "Set_Report" : "Get_Report", | |
375 | usbhid->cr->wValue, usbhid->cr->wIndex, usbhid->cr->wLength); | |
1da177e4 | 376 | |
0361a28d ON |
377 | if (usb_submit_urb(usbhid->urbctrl, GFP_ATOMIC)) { |
378 | err_hid("usb_submit_urb(ctrl) failed"); | |
379 | return -1; | |
380 | } | |
381 | } else { | |
382 | /* | |
383 | * queue work to wake up the device. | |
384 | * as the work queue is freezeable, this is safe | |
385 | * with respect to STD and STR | |
386 | */ | |
387 | queue_work(resumption_waker, &usbhid->restart_work); | |
48b4554a | 388 | } |
1da177e4 | 389 | |
48b4554a JK |
390 | return 0; |
391 | } | |
1da177e4 | 392 | |
48b4554a JK |
393 | /* |
394 | * Output interrupt completion handler. | |
395 | */ | |
1da177e4 | 396 | |
48b4554a JK |
397 | static void hid_irq_out(struct urb *urb) |
398 | { | |
399 | struct hid_device *hid = urb->context; | |
400 | struct usbhid_device *usbhid = hid->driver_data; | |
401 | unsigned long flags; | |
402 | int unplug = 0; | |
1da177e4 | 403 | |
48b4554a | 404 | switch (urb->status) { |
880d29f1 JS |
405 | case 0: /* success */ |
406 | break; | |
407 | case -ESHUTDOWN: /* unplug */ | |
408 | unplug = 1; | |
409 | case -EILSEQ: /* protocol error or unplug */ | |
410 | case -EPROTO: /* protocol error or unplug */ | |
411 | case -ECONNRESET: /* unlink */ | |
412 | case -ENOENT: | |
413 | break; | |
414 | default: /* error */ | |
7d89fe12 GKH |
415 | dev_warn(&urb->dev->dev, "output irq status %d " |
416 | "received\n", urb->status); | |
48b4554a | 417 | } |
1da177e4 | 418 | |
0361a28d | 419 | spin_lock_irqsave(&usbhid->lock, flags); |
1da177e4 | 420 | |
48b4554a JK |
421 | if (unplug) |
422 | usbhid->outtail = usbhid->outhead; | |
423 | else | |
424 | usbhid->outtail = (usbhid->outtail + 1) & (HID_OUTPUT_FIFO_SIZE - 1); | |
1da177e4 | 425 | |
48b4554a JK |
426 | if (usbhid->outhead != usbhid->outtail) { |
427 | if (hid_submit_out(hid)) { | |
428 | clear_bit(HID_OUT_RUNNING, &usbhid->iofl); | |
1d1bdd20 | 429 | wake_up(&usbhid->wait); |
48b4554a | 430 | } |
0361a28d | 431 | spin_unlock_irqrestore(&usbhid->lock, flags); |
48b4554a JK |
432 | return; |
433 | } | |
1da177e4 | 434 | |
48b4554a | 435 | clear_bit(HID_OUT_RUNNING, &usbhid->iofl); |
0361a28d | 436 | spin_unlock_irqrestore(&usbhid->lock, flags); |
1d1bdd20 | 437 | wake_up(&usbhid->wait); |
48b4554a | 438 | } |
6345fdfd | 439 | |
48b4554a JK |
440 | /* |
441 | * Control pipe completion handler. | |
442 | */ | |
1da177e4 | 443 | |
48b4554a JK |
444 | static void hid_ctrl(struct urb *urb) |
445 | { | |
446 | struct hid_device *hid = urb->context; | |
447 | struct usbhid_device *usbhid = hid->driver_data; | |
0361a28d | 448 | int unplug = 0, status = urb->status; |
1da177e4 | 449 | |
0361a28d | 450 | spin_lock(&usbhid->lock); |
1da177e4 | 451 | |
0361a28d | 452 | switch (status) { |
880d29f1 JS |
453 | case 0: /* success */ |
454 | if (usbhid->ctrl[usbhid->ctrltail].dir == USB_DIR_IN) | |
455 | hid_input_report(urb->context, | |
456 | usbhid->ctrl[usbhid->ctrltail].report->type, | |
457 | urb->transfer_buffer, urb->actual_length, 0); | |
458 | break; | |
459 | case -ESHUTDOWN: /* unplug */ | |
460 | unplug = 1; | |
461 | case -EILSEQ: /* protocol error or unplug */ | |
462 | case -EPROTO: /* protocol error or unplug */ | |
463 | case -ECONNRESET: /* unlink */ | |
464 | case -ENOENT: | |
465 | case -EPIPE: /* report not available */ | |
466 | break; | |
467 | default: /* error */ | |
7d89fe12 | 468 | dev_warn(&urb->dev->dev, "ctrl urb status %d " |
0361a28d | 469 | "received\n", status); |
48b4554a | 470 | } |
1da177e4 | 471 | |
48b4554a JK |
472 | if (unplug) |
473 | usbhid->ctrltail = usbhid->ctrlhead; | |
474 | else | |
475 | usbhid->ctrltail = (usbhid->ctrltail + 1) & (HID_CONTROL_FIFO_SIZE - 1); | |
1da177e4 | 476 | |
48b4554a JK |
477 | if (usbhid->ctrlhead != usbhid->ctrltail) { |
478 | if (hid_submit_ctrl(hid)) { | |
479 | clear_bit(HID_CTRL_RUNNING, &usbhid->iofl); | |
1d1bdd20 | 480 | wake_up(&usbhid->wait); |
48b4554a | 481 | } |
0361a28d | 482 | spin_unlock(&usbhid->lock); |
48b4554a JK |
483 | return; |
484 | } | |
1da177e4 | 485 | |
48b4554a | 486 | clear_bit(HID_CTRL_RUNNING, &usbhid->iofl); |
0361a28d | 487 | spin_unlock(&usbhid->lock); |
1d1bdd20 | 488 | wake_up(&usbhid->wait); |
48b4554a | 489 | } |
1da177e4 | 490 | |
52cfc61b HS |
491 | static void __usbhid_submit_report(struct hid_device *hid, struct hid_report *report, |
492 | unsigned char dir) | |
48b4554a JK |
493 | { |
494 | int head; | |
48b4554a | 495 | struct usbhid_device *usbhid = hid->driver_data; |
f129ea6d | 496 | int len = ((report->size - 1) >> 3) + 1 + (report->id > 0); |
1da177e4 | 497 | |
48b4554a JK |
498 | if ((hid->quirks & HID_QUIRK_NOGET) && dir == USB_DIR_IN) |
499 | return; | |
b857c651 | 500 | |
48b4554a | 501 | if (usbhid->urbout && dir == USB_DIR_OUT && report->type == HID_OUTPUT_REPORT) { |
48b4554a | 502 | if ((head = (usbhid->outhead + 1) & (HID_OUTPUT_FIFO_SIZE - 1)) == usbhid->outtail) { |
7d89fe12 | 503 | dev_warn(&hid->dev, "output queue full\n"); |
48b4554a JK |
504 | return; |
505 | } | |
1da177e4 | 506 | |
f129ea6d AH |
507 | usbhid->out[usbhid->outhead].raw_report = kmalloc(len, GFP_ATOMIC); |
508 | if (!usbhid->out[usbhid->outhead].raw_report) { | |
46fcaec5 | 509 | dev_warn(&hid->dev, "output queueing failed\n"); |
f129ea6d AH |
510 | return; |
511 | } | |
512 | hid_output_report(report, usbhid->out[usbhid->outhead].raw_report); | |
513 | usbhid->out[usbhid->outhead].report = report; | |
48b4554a | 514 | usbhid->outhead = head; |
4871d3be | 515 | |
48b4554a JK |
516 | if (!test_and_set_bit(HID_OUT_RUNNING, &usbhid->iofl)) |
517 | if (hid_submit_out(hid)) | |
518 | clear_bit(HID_OUT_RUNNING, &usbhid->iofl); | |
48b4554a JK |
519 | return; |
520 | } | |
1da177e4 | 521 | |
48b4554a | 522 | if ((head = (usbhid->ctrlhead + 1) & (HID_CONTROL_FIFO_SIZE - 1)) == usbhid->ctrltail) { |
7d89fe12 | 523 | dev_warn(&hid->dev, "control queue full\n"); |
48b4554a JK |
524 | return; |
525 | } | |
8fd80133 | 526 | |
f129ea6d AH |
527 | if (dir == USB_DIR_OUT) { |
528 | usbhid->ctrl[usbhid->ctrlhead].raw_report = kmalloc(len, GFP_ATOMIC); | |
529 | if (!usbhid->ctrl[usbhid->ctrlhead].raw_report) { | |
46fcaec5 | 530 | dev_warn(&hid->dev, "control queueing failed\n"); |
f129ea6d AH |
531 | return; |
532 | } | |
533 | hid_output_report(report, usbhid->ctrl[usbhid->ctrlhead].raw_report); | |
534 | } | |
48b4554a JK |
535 | usbhid->ctrl[usbhid->ctrlhead].report = report; |
536 | usbhid->ctrl[usbhid->ctrlhead].dir = dir; | |
537 | usbhid->ctrlhead = head; | |
8fd80133 | 538 | |
48b4554a JK |
539 | if (!test_and_set_bit(HID_CTRL_RUNNING, &usbhid->iofl)) |
540 | if (hid_submit_ctrl(hid)) | |
541 | clear_bit(HID_CTRL_RUNNING, &usbhid->iofl); | |
0361a28d | 542 | } |
931e24b9 | 543 | |
0361a28d ON |
544 | void usbhid_submit_report(struct hid_device *hid, struct hid_report *report, unsigned char dir) |
545 | { | |
546 | struct usbhid_device *usbhid = hid->driver_data; | |
547 | unsigned long flags; | |
931e24b9 | 548 | |
0361a28d ON |
549 | spin_lock_irqsave(&usbhid->lock, flags); |
550 | __usbhid_submit_report(hid, report, dir); | |
551 | spin_unlock_irqrestore(&usbhid->lock, flags); | |
48b4554a | 552 | } |
606bd0a8 | 553 | EXPORT_SYMBOL_GPL(usbhid_submit_report); |
23b0d968 | 554 | |
48b4554a JK |
555 | static int usb_hidinput_input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) |
556 | { | |
e0712985 | 557 | struct hid_device *hid = input_get_drvdata(dev); |
0361a28d | 558 | struct usbhid_device *usbhid = hid->driver_data; |
48b4554a | 559 | struct hid_field *field; |
0361a28d | 560 | unsigned long flags; |
48b4554a | 561 | int offset; |
41ad5fba | 562 | |
48b4554a JK |
563 | if (type == EV_FF) |
564 | return input_ff_event(dev, type, code, value); | |
8d2bad87 | 565 | |
48b4554a JK |
566 | if (type != EV_LED) |
567 | return -1; | |
5556feae | 568 | |
48b4554a | 569 | if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) { |
7d89fe12 | 570 | dev_warn(&dev->dev, "event field not found\n"); |
48b4554a JK |
571 | return -1; |
572 | } | |
4a1a4d8b | 573 | |
48b4554a | 574 | hid_set_field(field, offset, value); |
0361a28d ON |
575 | if (value) { |
576 | spin_lock_irqsave(&usbhid->lock, flags); | |
577 | usbhid->ledcount++; | |
578 | spin_unlock_irqrestore(&usbhid->lock, flags); | |
579 | } else { | |
580 | spin_lock_irqsave(&usbhid->lock, flags); | |
581 | usbhid->ledcount--; | |
582 | spin_unlock_irqrestore(&usbhid->lock, flags); | |
583 | } | |
48b4554a | 584 | usbhid_submit_report(hid, field->report, USB_DIR_OUT); |
1da177e4 | 585 | |
48b4554a JK |
586 | return 0; |
587 | } | |
1da177e4 | 588 | |
48b4554a JK |
589 | int usbhid_wait_io(struct hid_device *hid) |
590 | { | |
591 | struct usbhid_device *usbhid = hid->driver_data; | |
25914662 | 592 | |
1d1bdd20 JS |
593 | if (!wait_event_timeout(usbhid->wait, |
594 | (!test_bit(HID_CTRL_RUNNING, &usbhid->iofl) && | |
595 | !test_bit(HID_OUT_RUNNING, &usbhid->iofl)), | |
48b4554a | 596 | 10*HZ)) { |
58037eb9 | 597 | dbg_hid("timeout waiting for ctrl or out queue to clear\n"); |
48b4554a JK |
598 | return -1; |
599 | } | |
1da177e4 | 600 | |
48b4554a JK |
601 | return 0; |
602 | } | |
53880546 | 603 | |
48b4554a JK |
604 | static int hid_set_idle(struct usb_device *dev, int ifnum, int report, int idle) |
605 | { | |
606 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
607 | HID_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE, (idle << 8) | report, | |
608 | ifnum, NULL, 0, USB_CTRL_SET_TIMEOUT); | |
609 | } | |
1da177e4 | 610 | |
48b4554a JK |
611 | static int hid_get_class_descriptor(struct usb_device *dev, int ifnum, |
612 | unsigned char type, void *buf, int size) | |
613 | { | |
614 | int result, retries = 4; | |
1da177e4 | 615 | |
48b4554a | 616 | memset(buf, 0, size); |
1da177e4 | 617 | |
48b4554a JK |
618 | do { |
619 | result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), | |
620 | USB_REQ_GET_DESCRIPTOR, USB_RECIP_INTERFACE | USB_DIR_IN, | |
621 | (type << 8), ifnum, buf, size, USB_CTRL_GET_TIMEOUT); | |
622 | retries--; | |
623 | } while (result < size && retries); | |
624 | return result; | |
625 | } | |
940824b0 | 626 | |
48b4554a JK |
627 | int usbhid_open(struct hid_device *hid) |
628 | { | |
933e3187 ON |
629 | struct usbhid_device *usbhid = hid->driver_data; |
630 | int res; | |
631 | ||
0361a28d | 632 | mutex_lock(&hid_open_mut); |
933e3187 ON |
633 | if (!hid->open++) { |
634 | res = usb_autopm_get_interface(usbhid->intf); | |
0361a28d | 635 | /* the device must be awake to reliable request remote wakeup */ |
933e3187 ON |
636 | if (res < 0) { |
637 | hid->open--; | |
0361a28d | 638 | mutex_unlock(&hid_open_mut); |
933e3187 ON |
639 | return -EIO; |
640 | } | |
0361a28d ON |
641 | usbhid->intf->needs_remote_wakeup = 1; |
642 | if (hid_start_in(hid)) | |
643 | hid_io_error(hid); | |
644 | ||
645 | usb_autopm_put_interface(usbhid->intf); | |
933e3187 | 646 | } |
0361a28d | 647 | mutex_unlock(&hid_open_mut); |
48b4554a JK |
648 | return 0; |
649 | } | |
a417a21e | 650 | |
48b4554a JK |
651 | void usbhid_close(struct hid_device *hid) |
652 | { | |
653 | struct usbhid_device *usbhid = hid->driver_data; | |
eab9edd2 | 654 | |
0361a28d ON |
655 | mutex_lock(&hid_open_mut); |
656 | ||
657 | /* protecting hid->open to make sure we don't restart | |
658 | * data acquistion due to a resumption we no longer | |
659 | * care about | |
660 | */ | |
661 | spin_lock_irq(&usbhid->lock); | |
933e3187 | 662 | if (!--hid->open) { |
0361a28d | 663 | spin_unlock_irq(&usbhid->lock); |
89092ddd | 664 | hid_cancel_delayed_stuff(usbhid); |
48b4554a | 665 | usb_kill_urb(usbhid->urbin); |
0361a28d ON |
666 | usbhid->intf->needs_remote_wakeup = 0; |
667 | } else { | |
668 | spin_unlock_irq(&usbhid->lock); | |
933e3187 | 669 | } |
0361a28d | 670 | mutex_unlock(&hid_open_mut); |
48b4554a | 671 | } |
1d3e2023 | 672 | |
48b4554a JK |
673 | /* |
674 | * Initialize all reports | |
675 | */ | |
41ad5fba | 676 | |
48b4554a JK |
677 | void usbhid_init_reports(struct hid_device *hid) |
678 | { | |
679 | struct hid_report *report; | |
680 | struct usbhid_device *usbhid = hid->driver_data; | |
681 | int err, ret; | |
41ad5fba | 682 | |
48b4554a JK |
683 | list_for_each_entry(report, &hid->report_enum[HID_INPUT_REPORT].report_list, list) |
684 | usbhid_submit_report(hid, report, USB_DIR_IN); | |
5556feae | 685 | |
48b4554a JK |
686 | list_for_each_entry(report, &hid->report_enum[HID_FEATURE_REPORT].report_list, list) |
687 | usbhid_submit_report(hid, report, USB_DIR_IN); | |
4a1a4d8b | 688 | |
48b4554a JK |
689 | err = 0; |
690 | ret = usbhid_wait_io(hid); | |
691 | while (ret) { | |
692 | err |= ret; | |
693 | if (test_bit(HID_CTRL_RUNNING, &usbhid->iofl)) | |
694 | usb_kill_urb(usbhid->urbctrl); | |
695 | if (test_bit(HID_OUT_RUNNING, &usbhid->iofl)) | |
696 | usb_kill_urb(usbhid->urbout); | |
697 | ret = usbhid_wait_io(hid); | |
698 | } | |
3f9b4076 | 699 | |
48b4554a | 700 | if (err) |
7d89fe12 | 701 | dev_warn(&hid->dev, "timeout initializing reports\n"); |
48b4554a | 702 | } |
1da177e4 | 703 | |
713c8aad PZ |
704 | /* |
705 | * Reset LEDs which BIOS might have left on. For now, just NumLock (0x01). | |
706 | */ | |
707 | static int hid_find_field_early(struct hid_device *hid, unsigned int page, | |
708 | unsigned int hid_code, struct hid_field **pfield) | |
709 | { | |
710 | struct hid_report *report; | |
711 | struct hid_field *field; | |
712 | struct hid_usage *usage; | |
713 | int i, j; | |
714 | ||
715 | list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) { | |
716 | for (i = 0; i < report->maxfield; i++) { | |
717 | field = report->field[i]; | |
718 | for (j = 0; j < field->maxusage; j++) { | |
719 | usage = &field->usage[j]; | |
720 | if ((usage->hid & HID_USAGE_PAGE) == page && | |
721 | (usage->hid & 0xFFFF) == hid_code) { | |
722 | *pfield = field; | |
723 | return j; | |
724 | } | |
725 | } | |
726 | } | |
727 | } | |
728 | return -1; | |
729 | } | |
730 | ||
6edfa8dc | 731 | void usbhid_set_leds(struct hid_device *hid) |
713c8aad PZ |
732 | { |
733 | struct hid_field *field; | |
734 | int offset; | |
735 | ||
736 | if ((offset = hid_find_field_early(hid, HID_UP_LED, 0x01, &field)) != -1) { | |
737 | hid_set_field(field, offset, 0); | |
738 | usbhid_submit_report(hid, field->report, USB_DIR_OUT); | |
739 | } | |
740 | } | |
6edfa8dc | 741 | EXPORT_SYMBOL_GPL(usbhid_set_leds); |
713c8aad | 742 | |
bf0964dc MH |
743 | /* |
744 | * Traverse the supplied list of reports and find the longest | |
745 | */ | |
282bfd4c JS |
746 | static void hid_find_max_report(struct hid_device *hid, unsigned int type, |
747 | unsigned int *max) | |
bf0964dc MH |
748 | { |
749 | struct hid_report *report; | |
282bfd4c | 750 | unsigned int size; |
bf0964dc MH |
751 | |
752 | list_for_each_entry(report, &hid->report_enum[type].report_list, list) { | |
efc7ce18 | 753 | size = ((report->size - 1) >> 3) + 1 + hid->report_enum[type].numbered; |
bf0964dc MH |
754 | if (*max < size) |
755 | *max = size; | |
756 | } | |
757 | } | |
758 | ||
1da177e4 LT |
759 | static int hid_alloc_buffers(struct usb_device *dev, struct hid_device *hid) |
760 | { | |
4916b3a5 JK |
761 | struct usbhid_device *usbhid = hid->driver_data; |
762 | ||
898089d0 JS |
763 | usbhid->inbuf = usb_buffer_alloc(dev, usbhid->bufsize, GFP_KERNEL, |
764 | &usbhid->inbuf_dma); | |
765 | usbhid->outbuf = usb_buffer_alloc(dev, usbhid->bufsize, GFP_KERNEL, | |
766 | &usbhid->outbuf_dma); | |
767 | usbhid->cr = usb_buffer_alloc(dev, sizeof(*usbhid->cr), GFP_KERNEL, | |
768 | &usbhid->cr_dma); | |
769 | usbhid->ctrlbuf = usb_buffer_alloc(dev, usbhid->bufsize, GFP_KERNEL, | |
770 | &usbhid->ctrlbuf_dma); | |
771 | if (!usbhid->inbuf || !usbhid->outbuf || !usbhid->cr || | |
772 | !usbhid->ctrlbuf) | |
1da177e4 LT |
773 | return -1; |
774 | ||
775 | return 0; | |
776 | } | |
777 | ||
efc493f9 JK |
778 | static int usbhid_output_raw_report(struct hid_device *hid, __u8 *buf, size_t count) |
779 | { | |
780 | struct usbhid_device *usbhid = hid->driver_data; | |
781 | struct usb_device *dev = hid_to_usb_dev(hid); | |
782 | struct usb_interface *intf = usbhid->intf; | |
783 | struct usb_host_interface *interface = intf->cur_altsetting; | |
784 | int ret; | |
785 | ||
786 | ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
787 | HID_REQ_SET_REPORT, | |
788 | USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE, | |
01d7b369 | 789 | ((HID_OUTPUT_REPORT + 1) << 8) | *buf, |
efc493f9 JK |
790 | interface->desc.bInterfaceNumber, buf + 1, count - 1, |
791 | USB_CTRL_SET_TIMEOUT); | |
792 | ||
793 | /* count also the report id */ | |
794 | if (ret > 0) | |
795 | ret++; | |
796 | ||
797 | return ret; | |
798 | } | |
799 | ||
0361a28d ON |
800 | static void usbhid_restart_queues(struct usbhid_device *usbhid) |
801 | { | |
802 | if (usbhid->urbout) | |
803 | usbhid_restart_out_queue(usbhid); | |
804 | usbhid_restart_ctrl_queue(usbhid); | |
805 | } | |
806 | ||
807 | static void __usbhid_restart_queues(struct work_struct *work) | |
808 | { | |
809 | struct usbhid_device *usbhid = | |
810 | container_of(work, struct usbhid_device, restart_work); | |
811 | int r; | |
812 | ||
813 | r = usb_autopm_get_interface(usbhid->intf); | |
814 | if (r < 0) | |
815 | return; | |
816 | usb_autopm_put_interface(usbhid->intf); | |
817 | } | |
818 | ||
1da177e4 LT |
819 | static void hid_free_buffers(struct usb_device *dev, struct hid_device *hid) |
820 | { | |
4916b3a5 JK |
821 | struct usbhid_device *usbhid = hid->driver_data; |
822 | ||
6675c5bd DT |
823 | usb_buffer_free(dev, usbhid->bufsize, usbhid->inbuf, usbhid->inbuf_dma); |
824 | usb_buffer_free(dev, usbhid->bufsize, usbhid->outbuf, usbhid->outbuf_dma); | |
825 | usb_buffer_free(dev, sizeof(*(usbhid->cr)), usbhid->cr, usbhid->cr_dma); | |
826 | usb_buffer_free(dev, usbhid->bufsize, usbhid->ctrlbuf, usbhid->ctrlbuf_dma); | |
1da177e4 LT |
827 | } |
828 | ||
c500c971 JS |
829 | static int usbhid_parse(struct hid_device *hid) |
830 | { | |
831 | struct usb_interface *intf = to_usb_interface(hid->dev.parent); | |
1da177e4 LT |
832 | struct usb_host_interface *interface = intf->cur_altsetting; |
833 | struct usb_device *dev = interface_to_usbdev (intf); | |
834 | struct hid_descriptor *hdesc; | |
2eb5dc30 | 835 | u32 quirks = 0; |
c500c971 | 836 | unsigned int rsize = 0; |
c5b7c7c3 | 837 | char *rdesc; |
c500c971 | 838 | int ret, n; |
1da177e4 | 839 | |
2eb5dc30 PW |
840 | quirks = usbhid_lookup_quirk(le16_to_cpu(dev->descriptor.idVendor), |
841 | le16_to_cpu(dev->descriptor.idProduct)); | |
1da177e4 | 842 | |
6f4303fb JK |
843 | if (quirks & HID_QUIRK_IGNORE) |
844 | return -ENODEV; | |
845 | ||
0f28b55d AS |
846 | /* Many keyboards and mice don't like to be polled for reports, |
847 | * so we will always set the HID_QUIRK_NOGET flag for them. */ | |
848 | if (interface->desc.bInterfaceSubClass == USB_INTERFACE_SUBCLASS_BOOT) { | |
849 | if (interface->desc.bInterfaceProtocol == USB_INTERFACE_PROTOCOL_KEYBOARD || | |
850 | interface->desc.bInterfaceProtocol == USB_INTERFACE_PROTOCOL_MOUSE) | |
851 | quirks |= HID_QUIRK_NOGET; | |
852 | } | |
853 | ||
c5b7c7c3 DT |
854 | if (usb_get_extra_descriptor(interface, HID_DT_HID, &hdesc) && |
855 | (!interface->desc.bNumEndpoints || | |
856 | usb_get_extra_descriptor(&interface->endpoint[0], HID_DT_HID, &hdesc))) { | |
58037eb9 | 857 | dbg_hid("class descriptor not present\n"); |
c500c971 | 858 | return -ENODEV; |
1da177e4 LT |
859 | } |
860 | ||
c500c971 JS |
861 | hid->version = le16_to_cpu(hdesc->bcdHID); |
862 | hid->country = hdesc->bCountryCode; | |
863 | ||
1da177e4 LT |
864 | for (n = 0; n < hdesc->bNumDescriptors; n++) |
865 | if (hdesc->desc[n].bDescriptorType == HID_DT_REPORT) | |
866 | rsize = le16_to_cpu(hdesc->desc[n].wDescriptorLength); | |
867 | ||
868 | if (!rsize || rsize > HID_MAX_DESCRIPTOR_SIZE) { | |
58037eb9 | 869 | dbg_hid("weird size of report descriptor (%u)\n", rsize); |
c500c971 | 870 | return -EINVAL; |
1da177e4 LT |
871 | } |
872 | ||
873 | if (!(rdesc = kmalloc(rsize, GFP_KERNEL))) { | |
58037eb9 | 874 | dbg_hid("couldn't allocate rdesc memory\n"); |
c500c971 | 875 | return -ENOMEM; |
1da177e4 LT |
876 | } |
877 | ||
854561b0 VP |
878 | hid_set_idle(dev, interface->desc.bInterfaceNumber, 0, 0); |
879 | ||
c500c971 JS |
880 | ret = hid_get_class_descriptor(dev, interface->desc.bInterfaceNumber, |
881 | HID_DT_REPORT, rdesc, rsize); | |
882 | if (ret < 0) { | |
58037eb9 | 883 | dbg_hid("reading report descriptor failed\n"); |
1da177e4 | 884 | kfree(rdesc); |
c500c971 | 885 | goto err; |
1da177e4 LT |
886 | } |
887 | ||
c500c971 JS |
888 | ret = hid_parse_report(hid, rdesc, rsize); |
889 | kfree(rdesc); | |
890 | if (ret) { | |
58037eb9 | 891 | dbg_hid("parsing report descriptor failed\n"); |
c500c971 | 892 | goto err; |
1da177e4 LT |
893 | } |
894 | ||
f5208997 | 895 | hid->quirks |= quirks; |
1da177e4 | 896 | |
c500c971 JS |
897 | return 0; |
898 | err: | |
899 | return ret; | |
900 | } | |
901 | ||
902 | static int usbhid_start(struct hid_device *hid) | |
903 | { | |
904 | struct usb_interface *intf = to_usb_interface(hid->dev.parent); | |
905 | struct usb_host_interface *interface = intf->cur_altsetting; | |
906 | struct usb_device *dev = interface_to_usbdev(intf); | |
3d5afd32 | 907 | struct usbhid_device *usbhid = hid->driver_data; |
c500c971 JS |
908 | unsigned int n, insize = 0; |
909 | int ret; | |
910 | ||
e3e14de5 JS |
911 | clear_bit(HID_DISCONNECTED, &usbhid->iofl); |
912 | ||
4916b3a5 JK |
913 | usbhid->bufsize = HID_MIN_BUFFER_SIZE; |
914 | hid_find_max_report(hid, HID_INPUT_REPORT, &usbhid->bufsize); | |
915 | hid_find_max_report(hid, HID_OUTPUT_REPORT, &usbhid->bufsize); | |
916 | hid_find_max_report(hid, HID_FEATURE_REPORT, &usbhid->bufsize); | |
bf0964dc | 917 | |
4916b3a5 JK |
918 | if (usbhid->bufsize > HID_MAX_BUFFER_SIZE) |
919 | usbhid->bufsize = HID_MAX_BUFFER_SIZE; | |
bf0964dc MH |
920 | |
921 | hid_find_max_report(hid, HID_INPUT_REPORT, &insize); | |
922 | ||
923 | if (insize > HID_MAX_BUFFER_SIZE) | |
924 | insize = HID_MAX_BUFFER_SIZE; | |
925 | ||
c500c971 JS |
926 | if (hid_alloc_buffers(dev, hid)) { |
927 | ret = -ENOMEM; | |
1da177e4 | 928 | goto fail; |
f345c37c PS |
929 | } |
930 | ||
1da177e4 | 931 | for (n = 0; n < interface->desc.bNumEndpoints; n++) { |
1da177e4 LT |
932 | struct usb_endpoint_descriptor *endpoint; |
933 | int pipe; | |
934 | int interval; | |
935 | ||
936 | endpoint = &interface->endpoint[n].desc; | |
581a2739 | 937 | if (!usb_endpoint_xfer_int(endpoint)) |
1da177e4 LT |
938 | continue; |
939 | ||
1da177e4 | 940 | interval = endpoint->bInterval; |
1da177e4 | 941 | |
f345c37c | 942 | /* Some vendors give fullspeed interval on highspeed devides */ |
c500c971 | 943 | if (hid->quirks & HID_QUIRK_FULLSPEED_INTERVAL && |
f345c37c PS |
944 | dev->speed == USB_SPEED_HIGH) { |
945 | interval = fls(endpoint->bInterval*8); | |
946 | printk(KERN_INFO "%s: Fixing fullspeed to highspeed interval: %d -> %d\n", | |
947 | hid->name, endpoint->bInterval, interval); | |
948 | } | |
949 | ||
1da177e4 LT |
950 | /* Change the polling interval of mice. */ |
951 | if (hid->collection->usage == HID_GD_MOUSE && hid_mousepoll_interval > 0) | |
952 | interval = hid_mousepoll_interval; | |
05f091ab | 953 | |
c500c971 | 954 | ret = -ENOMEM; |
0f12aa03 | 955 | if (usb_endpoint_dir_in(endpoint)) { |
4916b3a5 | 956 | if (usbhid->urbin) |
1da177e4 | 957 | continue; |
4916b3a5 | 958 | if (!(usbhid->urbin = usb_alloc_urb(0, GFP_KERNEL))) |
1da177e4 LT |
959 | goto fail; |
960 | pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress); | |
4916b3a5 | 961 | usb_fill_int_urb(usbhid->urbin, dev, pipe, usbhid->inbuf, insize, |
1da177e4 | 962 | hid_irq_in, hid, interval); |
4916b3a5 JK |
963 | usbhid->urbin->transfer_dma = usbhid->inbuf_dma; |
964 | usbhid->urbin->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
1da177e4 | 965 | } else { |
4916b3a5 | 966 | if (usbhid->urbout) |
1da177e4 | 967 | continue; |
4916b3a5 | 968 | if (!(usbhid->urbout = usb_alloc_urb(0, GFP_KERNEL))) |
1da177e4 LT |
969 | goto fail; |
970 | pipe = usb_sndintpipe(dev, endpoint->bEndpointAddress); | |
4916b3a5 | 971 | usb_fill_int_urb(usbhid->urbout, dev, pipe, usbhid->outbuf, 0, |
1da177e4 | 972 | hid_irq_out, hid, interval); |
4916b3a5 JK |
973 | usbhid->urbout->transfer_dma = usbhid->outbuf_dma; |
974 | usbhid->urbout->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
1da177e4 LT |
975 | } |
976 | } | |
977 | ||
1d1bdd20 | 978 | init_waitqueue_head(&usbhid->wait); |
4916b3a5 | 979 | INIT_WORK(&usbhid->reset_work, hid_reset); |
0361a28d | 980 | INIT_WORK(&usbhid->restart_work, __usbhid_restart_queues); |
4916b3a5 | 981 | setup_timer(&usbhid->io_retry, hid_retry_timeout, (unsigned long) hid); |
aef4e266 | 982 | |
0361a28d | 983 | spin_lock_init(&usbhid->lock); |
1da177e4 | 984 | |
4916b3a5 JK |
985 | usbhid->intf = intf; |
986 | usbhid->ifnum = interface->desc.bInterfaceNumber; | |
1da177e4 | 987 | |
4916b3a5 | 988 | usbhid->urbctrl = usb_alloc_urb(0, GFP_KERNEL); |
c500c971 JS |
989 | if (!usbhid->urbctrl) { |
990 | ret = -ENOMEM; | |
1da177e4 | 991 | goto fail; |
c500c971 | 992 | } |
c5b7c7c3 | 993 | |
4916b3a5 JK |
994 | usb_fill_control_urb(usbhid->urbctrl, dev, 0, (void *) usbhid->cr, |
995 | usbhid->ctrlbuf, 1, hid_ctrl, hid); | |
996 | usbhid->urbctrl->setup_dma = usbhid->cr_dma; | |
997 | usbhid->urbctrl->transfer_dma = usbhid->ctrlbuf_dma; | |
998 | usbhid->urbctrl->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP | URB_NO_SETUP_DMA_MAP); | |
c500c971 | 999 | |
93c10132 | 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 ON |
1256 | struct usb_device *udev = interface_to_usbdev(intf); |
1257 | int status; | |
1da177e4 | 1258 | |
0361a28d ON |
1259 | if (udev->auto_pm) { |
1260 | spin_lock_irq(&usbhid->lock); /* Sync with error handler */ | |
1261 | if (!test_bit(HID_RESET_PENDING, &usbhid->iofl) | |
1262 | && !test_bit(HID_CLEAR_HALT, &usbhid->iofl) | |
1263 | && !test_bit(HID_OUT_RUNNING, &usbhid->iofl) | |
1264 | && !test_bit(HID_CTRL_RUNNING, &usbhid->iofl) | |
1265 | && !test_bit(HID_KEYS_PRESSED, &usbhid->iofl) | |
1266 | && (!usbhid->ledcount || ignoreled)) | |
1267 | { | |
1268 | set_bit(HID_REPORTED_IDLE, &usbhid->iofl); | |
1269 | spin_unlock_irq(&usbhid->lock); | |
1270 | } else { | |
1271 | usbhid_mark_busy(usbhid); | |
1272 | spin_unlock_irq(&usbhid->lock); | |
1273 | return -EBUSY; | |
1274 | } | |
3d5afd32 | 1275 | |
0361a28d ON |
1276 | } else { |
1277 | spin_lock_irq(&usbhid->lock); | |
1278 | set_bit(HID_REPORTED_IDLE, &usbhid->iofl); | |
1279 | spin_unlock_irq(&usbhid->lock); | |
1280 | if (usbhid_wait_io(hid) < 0) | |
1281 | return -EIO; | |
1282 | } | |
1283 | ||
1284 | if (!ignoreled && udev->auto_pm) { | |
1285 | spin_lock_irq(&usbhid->lock); | |
1286 | if (test_bit(HID_LED_ON, &usbhid->iofl)) { | |
1287 | spin_unlock_irq(&usbhid->lock); | |
1288 | usbhid_mark_busy(usbhid); | |
1289 | return -EBUSY; | |
1290 | } | |
1291 | spin_unlock_irq(&usbhid->lock); | |
1292 | } | |
1293 | ||
1294 | hid_cancel_delayed_stuff(usbhid); | |
1295 | hid_cease_io(usbhid); | |
1296 | ||
1297 | if (udev->auto_pm && test_bit(HID_KEYS_PRESSED, &usbhid->iofl)) { | |
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 | |
1da177e4 LT |
1345 | static struct usb_device_id hid_usb_ids [] = { |
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; | |
ddbe3249 GKH |
1397 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
1398 | DRIVER_DESC "\n"); | |
1da177e4 LT |
1399 | |
1400 | return 0; | |
1401 | usb_register_fail: | |
1402 | hiddev_exit(); | |
1403 | hiddev_init_fail: | |
876b9276 PW |
1404 | usbhid_quirks_exit(); |
1405 | usbhid_quirks_init_fail: | |
85cdaf52 JS |
1406 | hid_unregister_driver(&hid_usb_driver); |
1407 | hid_register_fail: | |
0361a28d ON |
1408 | destroy_workqueue(resumption_waker); |
1409 | no_queue: | |
1da177e4 LT |
1410 | return retval; |
1411 | } | |
1412 | ||
1413 | static void __exit hid_exit(void) | |
1414 | { | |
1415 | usb_deregister(&hid_driver); | |
1416 | hiddev_exit(); | |
876b9276 | 1417 | usbhid_quirks_exit(); |
85cdaf52 | 1418 | hid_unregister_driver(&hid_usb_driver); |
0361a28d | 1419 | destroy_workqueue(resumption_waker); |
1da177e4 LT |
1420 | } |
1421 | ||
1422 | module_init(hid_init); | |
1423 | module_exit(hid_exit); | |
1424 | ||
88adb72b JK |
1425 | MODULE_AUTHOR("Andreas Gal"); |
1426 | MODULE_AUTHOR("Vojtech Pavlik"); | |
1427 | MODULE_AUTHOR("Jiri Kosina"); | |
1da177e4 LT |
1428 | MODULE_DESCRIPTION(DRIVER_DESC); |
1429 | MODULE_LICENSE(DRIVER_LICENSE); |