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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * USB HID support for Linux | |
3 | * | |
4 | * Copyright (c) 1999 Andreas Gal | |
bf0964dc MH |
5 | * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz> |
6 | * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc | |
0361a28d | 7 | * Copyright (c) 2007-2008 Oliver Neukum |
7d39e849 | 8 | * Copyright (c) 2006-2010 Jiri Kosina |
1da177e4 LT |
9 | */ |
10 | ||
11 | /* | |
12 | * This program is free software; you can redistribute it and/or modify it | |
13 | * under the terms of the GNU General Public License as published by the Free | |
14 | * Software Foundation; either version 2 of the License, or (at your option) | |
15 | * any later version. | |
16 | */ | |
17 | ||
18 | #include <linux/module.h> | |
19 | #include <linux/slab.h> | |
20 | #include <linux/init.h> | |
21 | #include <linux/kernel.h> | |
1da177e4 LT |
22 | #include <linux/list.h> |
23 | #include <linux/mm.h> | |
3d5afd32 | 24 | #include <linux/mutex.h> |
1da177e4 LT |
25 | #include <linux/spinlock.h> |
26 | #include <asm/unaligned.h> | |
27 | #include <asm/byteorder.h> | |
28 | #include <linux/input.h> | |
29 | #include <linux/wait.h> | |
0361a28d | 30 | #include <linux/workqueue.h> |
1da177e4 | 31 | |
1da177e4 LT |
32 | #include <linux/usb.h> |
33 | ||
dde5845a | 34 | #include <linux/hid.h> |
1da177e4 | 35 | #include <linux/hiddev.h> |
c080d89a | 36 | #include <linux/hid-debug.h> |
86166b7b | 37 | #include <linux/hidraw.h> |
4916b3a5 | 38 | #include "usbhid.h" |
1da177e4 LT |
39 | |
40 | /* | |
41 | * Version Information | |
42 | */ | |
43 | ||
1da177e4 LT |
44 | #define DRIVER_DESC "USB HID core driver" |
45 | #define DRIVER_LICENSE "GPL" | |
46 | ||
1da177e4 LT |
47 | /* |
48 | * Module parameters. | |
49 | */ | |
50 | ||
51 | static unsigned int hid_mousepoll_interval; | |
52 | module_param_named(mousepoll, hid_mousepoll_interval, uint, 0644); | |
53 | MODULE_PARM_DESC(mousepoll, "Polling interval of mice"); | |
54 | ||
0361a28d ON |
55 | static unsigned int ignoreled; |
56 | module_param_named(ignoreled, ignoreled, uint, 0644); | |
57 | MODULE_PARM_DESC(ignoreled, "Autosuspend with active leds"); | |
58 | ||
876b9276 PW |
59 | /* Quirks specified at module load time */ |
60 | static char *quirks_param[MAX_USBHID_BOOT_QUIRKS] = { [ 0 ... (MAX_USBHID_BOOT_QUIRKS - 1) ] = NULL }; | |
61 | module_param_array_named(quirks, quirks_param, charp, NULL, 0444); | |
62 | MODULE_PARM_DESC(quirks, "Add/modify USB HID quirks by specifying " | |
63 | " quirks=vendorID:productID:quirks" | |
64 | " where vendorID, productID, and quirks are all in" | |
65 | " 0x-prefixed hex"); | |
1da177e4 | 66 | /* |
48b4554a | 67 | * Input submission and I/O error handler. |
1da177e4 | 68 | */ |
0361a28d | 69 | static DEFINE_MUTEX(hid_open_mut); |
1da177e4 | 70 | |
48b4554a | 71 | static void hid_io_error(struct hid_device *hid); |
0361a28d ON |
72 | static int hid_submit_out(struct hid_device *hid); |
73 | static int hid_submit_ctrl(struct hid_device *hid); | |
74 | static void hid_cancel_delayed_stuff(struct usbhid_device *usbhid); | |
48b4554a JK |
75 | |
76 | /* Start up the input URB */ | |
77 | static int hid_start_in(struct hid_device *hid) | |
1da177e4 | 78 | { |
1da177e4 | 79 | unsigned long flags; |
48b4554a JK |
80 | int rc = 0; |
81 | struct usbhid_device *usbhid = hid->driver_data; | |
1da177e4 | 82 | |
0361a28d ON |
83 | spin_lock_irqsave(&usbhid->lock, flags); |
84 | if (hid->open > 0 && | |
69626f23 | 85 | !test_bit(HID_DISCONNECTED, &usbhid->iofl) && |
0361a28d | 86 | !test_bit(HID_REPORTED_IDLE, &usbhid->iofl) && |
48b4554a JK |
87 | !test_and_set_bit(HID_IN_RUNNING, &usbhid->iofl)) { |
88 | rc = usb_submit_urb(usbhid->urbin, GFP_ATOMIC); | |
89 | if (rc != 0) | |
90 | clear_bit(HID_IN_RUNNING, &usbhid->iofl); | |
1da177e4 | 91 | } |
0361a28d | 92 | spin_unlock_irqrestore(&usbhid->lock, flags); |
48b4554a | 93 | return rc; |
1da177e4 LT |
94 | } |
95 | ||
48b4554a JK |
96 | /* I/O retry timer routine */ |
97 | static void hid_retry_timeout(unsigned long _hid) | |
1da177e4 | 98 | { |
48b4554a | 99 | struct hid_device *hid = (struct hid_device *) _hid; |
4916b3a5 | 100 | struct usbhid_device *usbhid = hid->driver_data; |
1da177e4 | 101 | |
48b4554a JK |
102 | dev_dbg(&usbhid->intf->dev, "retrying intr urb\n"); |
103 | if (hid_start_in(hid)) | |
104 | hid_io_error(hid); | |
1da177e4 LT |
105 | } |
106 | ||
48b4554a JK |
107 | /* Workqueue routine to reset the device or clear a halt */ |
108 | static void hid_reset(struct work_struct *work) | |
1da177e4 | 109 | { |
48b4554a JK |
110 | struct usbhid_device *usbhid = |
111 | container_of(work, struct usbhid_device, reset_work); | |
112 | struct hid_device *hid = usbhid->hid; | |
011b15df | 113 | int rc = 0; |
1da177e4 | 114 | |
48b4554a JK |
115 | if (test_bit(HID_CLEAR_HALT, &usbhid->iofl)) { |
116 | dev_dbg(&usbhid->intf->dev, "clear halt\n"); | |
117 | rc = usb_clear_halt(hid_to_usb_dev(hid), usbhid->urbin->pipe); | |
118 | clear_bit(HID_CLEAR_HALT, &usbhid->iofl); | |
119 | hid_start_in(hid); | |
120 | } | |
1da177e4 | 121 | |
48b4554a JK |
122 | else if (test_bit(HID_RESET_PENDING, &usbhid->iofl)) { |
123 | dev_dbg(&usbhid->intf->dev, "resetting device\n"); | |
011b15df AS |
124 | rc = usb_lock_device_for_reset(hid_to_usb_dev(hid), usbhid->intf); |
125 | if (rc == 0) { | |
742120c6 | 126 | rc = usb_reset_device(hid_to_usb_dev(hid)); |
011b15df | 127 | usb_unlock_device(hid_to_usb_dev(hid)); |
1da177e4 | 128 | } |
48b4554a | 129 | clear_bit(HID_RESET_PENDING, &usbhid->iofl); |
1da177e4 LT |
130 | } |
131 | ||
48b4554a JK |
132 | switch (rc) { |
133 | case 0: | |
134 | if (!test_bit(HID_IN_RUNNING, &usbhid->iofl)) | |
135 | hid_io_error(hid); | |
136 | break; | |
137 | default: | |
4291ee30 JP |
138 | hid_err(hid, "can't reset device, %s-%s/input%d, status %d\n", |
139 | hid_to_usb_dev(hid)->bus->bus_name, | |
140 | hid_to_usb_dev(hid)->devpath, | |
141 | usbhid->ifnum, rc); | |
48b4554a JK |
142 | /* FALLTHROUGH */ |
143 | case -EHOSTUNREACH: | |
144 | case -ENODEV: | |
145 | case -EINTR: | |
146 | break; | |
1da177e4 | 147 | } |
1da177e4 LT |
148 | } |
149 | ||
48b4554a JK |
150 | /* Main I/O error handler */ |
151 | static void hid_io_error(struct hid_device *hid) | |
dde5845a | 152 | { |
48b4554a JK |
153 | unsigned long flags; |
154 | struct usbhid_device *usbhid = hid->driver_data; | |
dde5845a | 155 | |
0361a28d | 156 | spin_lock_irqsave(&usbhid->lock, flags); |
dde5845a | 157 | |
48b4554a | 158 | /* Stop when disconnected */ |
69626f23 | 159 | if (test_bit(HID_DISCONNECTED, &usbhid->iofl)) |
48b4554a | 160 | goto done; |
dde5845a | 161 | |
5e2a55f2 AS |
162 | /* If it has been a while since the last error, we'll assume |
163 | * this a brand new error and reset the retry timeout. */ | |
164 | if (time_after(jiffies, usbhid->stop_retry + HZ/2)) | |
165 | usbhid->retry_delay = 0; | |
166 | ||
48b4554a JK |
167 | /* When an error occurs, retry at increasing intervals */ |
168 | if (usbhid->retry_delay == 0) { | |
169 | usbhid->retry_delay = 13; /* Then 26, 52, 104, 104, ... */ | |
170 | usbhid->stop_retry = jiffies + msecs_to_jiffies(1000); | |
171 | } else if (usbhid->retry_delay < 100) | |
172 | usbhid->retry_delay *= 2; | |
dde5845a | 173 | |
48b4554a | 174 | if (time_after(jiffies, usbhid->stop_retry)) { |
4916b3a5 | 175 | |
48b4554a JK |
176 | /* Retries failed, so do a port reset */ |
177 | if (!test_and_set_bit(HID_RESET_PENDING, &usbhid->iofl)) { | |
178 | schedule_work(&usbhid->reset_work); | |
179 | goto done; | |
180 | } | |
1da177e4 LT |
181 | } |
182 | ||
48b4554a JK |
183 | mod_timer(&usbhid->io_retry, |
184 | jiffies + msecs_to_jiffies(usbhid->retry_delay)); | |
185 | done: | |
0361a28d ON |
186 | spin_unlock_irqrestore(&usbhid->lock, flags); |
187 | } | |
188 | ||
189 | static void usbhid_mark_busy(struct usbhid_device *usbhid) | |
190 | { | |
191 | struct usb_interface *intf = usbhid->intf; | |
192 | ||
193 | usb_mark_last_busy(interface_to_usbdev(intf)); | |
194 | } | |
195 | ||
196 | static int usbhid_restart_out_queue(struct usbhid_device *usbhid) | |
197 | { | |
198 | struct hid_device *hid = usb_get_intfdata(usbhid->intf); | |
199 | int kicked; | |
200 | ||
201 | if (!hid) | |
202 | return 0; | |
203 | ||
204 | if ((kicked = (usbhid->outhead != usbhid->outtail))) { | |
205 | dbg("Kicking head %d tail %d", usbhid->outhead, usbhid->outtail); | |
206 | if (hid_submit_out(hid)) { | |
207 | clear_bit(HID_OUT_RUNNING, &usbhid->iofl); | |
208 | wake_up(&usbhid->wait); | |
209 | } | |
210 | } | |
211 | return kicked; | |
212 | } | |
213 | ||
214 | static int usbhid_restart_ctrl_queue(struct usbhid_device *usbhid) | |
215 | { | |
216 | struct hid_device *hid = usb_get_intfdata(usbhid->intf); | |
217 | int kicked; | |
218 | ||
219 | WARN_ON(hid == NULL); | |
220 | if (!hid) | |
221 | return 0; | |
222 | ||
223 | if ((kicked = (usbhid->ctrlhead != usbhid->ctrltail))) { | |
224 | dbg("Kicking head %d tail %d", usbhid->ctrlhead, usbhid->ctrltail); | |
225 | if (hid_submit_ctrl(hid)) { | |
226 | clear_bit(HID_CTRL_RUNNING, &usbhid->iofl); | |
227 | wake_up(&usbhid->wait); | |
228 | } | |
229 | } | |
230 | return kicked; | |
1da177e4 LT |
231 | } |
232 | ||
48b4554a JK |
233 | /* |
234 | * Input interrupt completion handler. | |
235 | */ | |
854561b0 | 236 | |
48b4554a | 237 | static void hid_irq_in(struct urb *urb) |
1da177e4 | 238 | { |
48b4554a JK |
239 | struct hid_device *hid = urb->context; |
240 | struct usbhid_device *usbhid = hid->driver_data; | |
241 | int status; | |
1da177e4 | 242 | |
48b4554a | 243 | switch (urb->status) { |
880d29f1 | 244 | case 0: /* success */ |
0361a28d | 245 | usbhid_mark_busy(usbhid); |
880d29f1 JS |
246 | usbhid->retry_delay = 0; |
247 | hid_input_report(urb->context, HID_INPUT_REPORT, | |
248 | urb->transfer_buffer, | |
249 | urb->actual_length, 1); | |
0361a28d ON |
250 | /* |
251 | * autosuspend refused while keys are pressed | |
252 | * because most keyboards don't wake up when | |
253 | * a key is released | |
254 | */ | |
255 | if (hid_check_keys_pressed(hid)) | |
256 | set_bit(HID_KEYS_PRESSED, &usbhid->iofl); | |
257 | else | |
258 | clear_bit(HID_KEYS_PRESSED, &usbhid->iofl); | |
880d29f1 JS |
259 | break; |
260 | case -EPIPE: /* stall */ | |
0361a28d | 261 | usbhid_mark_busy(usbhid); |
880d29f1 JS |
262 | clear_bit(HID_IN_RUNNING, &usbhid->iofl); |
263 | set_bit(HID_CLEAR_HALT, &usbhid->iofl); | |
264 | schedule_work(&usbhid->reset_work); | |
265 | return; | |
266 | case -ECONNRESET: /* unlink */ | |
267 | case -ENOENT: | |
268 | case -ESHUTDOWN: /* unplug */ | |
269 | clear_bit(HID_IN_RUNNING, &usbhid->iofl); | |
270 | return; | |
271 | case -EILSEQ: /* protocol error or unplug */ | |
272 | case -EPROTO: /* protocol error or unplug */ | |
273 | case -ETIME: /* protocol error or unplug */ | |
274 | case -ETIMEDOUT: /* Should never happen, but... */ | |
0361a28d | 275 | usbhid_mark_busy(usbhid); |
880d29f1 JS |
276 | clear_bit(HID_IN_RUNNING, &usbhid->iofl); |
277 | hid_io_error(hid); | |
278 | return; | |
279 | default: /* error */ | |
4291ee30 JP |
280 | hid_warn(urb->dev, "input irq status %d received\n", |
281 | urb->status); | |
48b4554a | 282 | } |
1da177e4 | 283 | |
48b4554a JK |
284 | status = usb_submit_urb(urb, GFP_ATOMIC); |
285 | if (status) { | |
286 | clear_bit(HID_IN_RUNNING, &usbhid->iofl); | |
287 | if (status != -EPERM) { | |
4291ee30 JP |
288 | hid_err(hid, "can't resubmit intr, %s-%s/input%d, status %d\n", |
289 | hid_to_usb_dev(hid)->bus->bus_name, | |
290 | hid_to_usb_dev(hid)->devpath, | |
291 | usbhid->ifnum, status); | |
48b4554a JK |
292 | hid_io_error(hid); |
293 | } | |
294 | } | |
1da177e4 LT |
295 | } |
296 | ||
48b4554a | 297 | static int hid_submit_out(struct hid_device *hid) |
1da177e4 | 298 | { |
48b4554a | 299 | struct hid_report *report; |
f129ea6d | 300 | char *raw_report; |
4916b3a5 | 301 | struct usbhid_device *usbhid = hid->driver_data; |
68229689 | 302 | int r; |
4916b3a5 | 303 | |
f129ea6d AH |
304 | report = usbhid->out[usbhid->outtail].report; |
305 | raw_report = usbhid->out[usbhid->outtail].raw_report; | |
1da177e4 | 306 | |
68229689 ON |
307 | r = usb_autopm_get_interface_async(usbhid->intf); |
308 | if (r < 0) | |
309 | return -1; | |
310 | ||
311 | /* | |
312 | * if the device hasn't been woken, we leave the output | |
313 | * to resume() | |
314 | */ | |
0361a28d ON |
315 | if (!test_bit(HID_REPORTED_IDLE, &usbhid->iofl)) { |
316 | usbhid->urbout->transfer_buffer_length = ((report->size - 1) >> 3) + 1 + (report->id > 0); | |
317 | usbhid->urbout->dev = hid_to_usb_dev(hid); | |
318 | memcpy(usbhid->outbuf, raw_report, usbhid->urbout->transfer_buffer_length); | |
319 | kfree(raw_report); | |
1d3e2023 | 320 | |
0361a28d | 321 | dbg_hid("submitting out urb\n"); |
d57cdcff | 322 | |
0361a28d | 323 | if (usb_submit_urb(usbhid->urbout, GFP_ATOMIC)) { |
4291ee30 | 324 | hid_err(hid, "usb_submit_urb(out) failed\n"); |
68229689 | 325 | usb_autopm_put_interface_async(usbhid->intf); |
0361a28d ON |
326 | return -1; |
327 | } | |
858155fb | 328 | usbhid->last_out = jiffies; |
48b4554a | 329 | } |
1da177e4 | 330 | |
48b4554a JK |
331 | return 0; |
332 | } | |
333 | ||
334 | static int hid_submit_ctrl(struct hid_device *hid) | |
1da177e4 LT |
335 | { |
336 | struct hid_report *report; | |
48b4554a | 337 | unsigned char dir; |
f129ea6d | 338 | char *raw_report; |
68229689 | 339 | int len, r; |
4916b3a5 | 340 | struct usbhid_device *usbhid = hid->driver_data; |
1da177e4 | 341 | |
48b4554a | 342 | report = usbhid->ctrl[usbhid->ctrltail].report; |
f129ea6d | 343 | raw_report = usbhid->ctrl[usbhid->ctrltail].raw_report; |
48b4554a | 344 | dir = usbhid->ctrl[usbhid->ctrltail].dir; |
1da177e4 | 345 | |
68229689 ON |
346 | r = usb_autopm_get_interface_async(usbhid->intf); |
347 | if (r < 0) | |
348 | return -1; | |
0361a28d ON |
349 | if (!test_bit(HID_REPORTED_IDLE, &usbhid->iofl)) { |
350 | len = ((report->size - 1) >> 3) + 1 + (report->id > 0); | |
351 | if (dir == USB_DIR_OUT) { | |
352 | usbhid->urbctrl->pipe = usb_sndctrlpipe(hid_to_usb_dev(hid), 0); | |
353 | usbhid->urbctrl->transfer_buffer_length = len; | |
354 | memcpy(usbhid->ctrlbuf, raw_report, len); | |
355 | kfree(raw_report); | |
356 | } else { | |
357 | int maxpacket, padlen; | |
358 | ||
359 | usbhid->urbctrl->pipe = usb_rcvctrlpipe(hid_to_usb_dev(hid), 0); | |
360 | maxpacket = usb_maxpacket(hid_to_usb_dev(hid), usbhid->urbctrl->pipe, 0); | |
361 | if (maxpacket > 0) { | |
362 | padlen = DIV_ROUND_UP(len, maxpacket); | |
363 | padlen *= maxpacket; | |
364 | if (padlen > usbhid->bufsize) | |
365 | padlen = usbhid->bufsize; | |
366 | } else | |
367 | padlen = 0; | |
368 | usbhid->urbctrl->transfer_buffer_length = padlen; | |
369 | } | |
370 | usbhid->urbctrl->dev = hid_to_usb_dev(hid); | |
1da177e4 | 371 | |
0361a28d ON |
372 | usbhid->cr->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE | dir; |
373 | usbhid->cr->bRequest = (dir == USB_DIR_OUT) ? HID_REQ_SET_REPORT : HID_REQ_GET_REPORT; | |
374 | usbhid->cr->wValue = cpu_to_le16(((report->type + 1) << 8) | report->id); | |
375 | usbhid->cr->wIndex = cpu_to_le16(usbhid->ifnum); | |
376 | usbhid->cr->wLength = cpu_to_le16(len); | |
1da177e4 | 377 | |
0361a28d ON |
378 | dbg_hid("submitting ctrl urb: %s wValue=0x%04x wIndex=0x%04x wLength=%u\n", |
379 | usbhid->cr->bRequest == HID_REQ_SET_REPORT ? "Set_Report" : "Get_Report", | |
380 | usbhid->cr->wValue, usbhid->cr->wIndex, usbhid->cr->wLength); | |
1da177e4 | 381 | |
0361a28d | 382 | if (usb_submit_urb(usbhid->urbctrl, GFP_ATOMIC)) { |
68229689 | 383 | usb_autopm_put_interface_async(usbhid->intf); |
4291ee30 | 384 | hid_err(hid, "usb_submit_urb(ctrl) failed\n"); |
0361a28d ON |
385 | return -1; |
386 | } | |
858155fb | 387 | usbhid->last_ctrl = jiffies; |
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 */ | |
4291ee30 JP |
415 | hid_warn(urb->dev, "output irq status %d received\n", |
416 | 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); |
68229689 | 437 | usb_autopm_put_interface_async(usbhid->intf); |
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 */ | |
4291ee30 | 469 | hid_warn(urb->dev, "ctrl urb status %d 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); |
68229689 | 483 | usb_autopm_put_interface_async(usbhid->intf); |
48b4554a JK |
484 | return; |
485 | } | |
1da177e4 | 486 | |
48b4554a | 487 | clear_bit(HID_CTRL_RUNNING, &usbhid->iofl); |
0361a28d | 488 | spin_unlock(&usbhid->lock); |
68229689 | 489 | usb_autopm_put_interface_async(usbhid->intf); |
1d1bdd20 | 490 | wake_up(&usbhid->wait); |
48b4554a | 491 | } |
1da177e4 | 492 | |
52cfc61b HS |
493 | static void __usbhid_submit_report(struct hid_device *hid, struct hid_report *report, |
494 | unsigned char dir) | |
48b4554a JK |
495 | { |
496 | int head; | |
48b4554a | 497 | struct usbhid_device *usbhid = hid->driver_data; |
f129ea6d | 498 | int len = ((report->size - 1) >> 3) + 1 + (report->id > 0); |
1da177e4 | 499 | |
48b4554a JK |
500 | if ((hid->quirks & HID_QUIRK_NOGET) && dir == USB_DIR_IN) |
501 | return; | |
b857c651 | 502 | |
48b4554a | 503 | if (usbhid->urbout && dir == USB_DIR_OUT && report->type == HID_OUTPUT_REPORT) { |
48b4554a | 504 | if ((head = (usbhid->outhead + 1) & (HID_OUTPUT_FIFO_SIZE - 1)) == usbhid->outtail) { |
4291ee30 | 505 | hid_warn(hid, "output queue full\n"); |
48b4554a JK |
506 | return; |
507 | } | |
1da177e4 | 508 | |
f129ea6d AH |
509 | usbhid->out[usbhid->outhead].raw_report = kmalloc(len, GFP_ATOMIC); |
510 | if (!usbhid->out[usbhid->outhead].raw_report) { | |
4291ee30 | 511 | hid_warn(hid, "output queueing failed\n"); |
f129ea6d AH |
512 | return; |
513 | } | |
514 | hid_output_report(report, usbhid->out[usbhid->outhead].raw_report); | |
515 | usbhid->out[usbhid->outhead].report = report; | |
48b4554a | 516 | usbhid->outhead = head; |
4871d3be | 517 | |
858155fb | 518 | if (!test_and_set_bit(HID_OUT_RUNNING, &usbhid->iofl)) { |
48b4554a JK |
519 | if (hid_submit_out(hid)) |
520 | clear_bit(HID_OUT_RUNNING, &usbhid->iofl); | |
858155fb ON |
521 | } else { |
522 | /* | |
523 | * the queue is known to run | |
524 | * but an earlier request may be stuck | |
525 | * we may need to time out | |
526 | * no race because this is called under | |
527 | * spinlock | |
528 | */ | |
529 | if (time_after(jiffies, usbhid->last_out + HZ * 5)) | |
530 | usb_unlink_urb(usbhid->urbout); | |
531 | } | |
48b4554a JK |
532 | return; |
533 | } | |
1da177e4 | 534 | |
48b4554a | 535 | if ((head = (usbhid->ctrlhead + 1) & (HID_CONTROL_FIFO_SIZE - 1)) == usbhid->ctrltail) { |
4291ee30 | 536 | hid_warn(hid, "control queue full\n"); |
48b4554a JK |
537 | return; |
538 | } | |
8fd80133 | 539 | |
f129ea6d AH |
540 | if (dir == USB_DIR_OUT) { |
541 | usbhid->ctrl[usbhid->ctrlhead].raw_report = kmalloc(len, GFP_ATOMIC); | |
542 | if (!usbhid->ctrl[usbhid->ctrlhead].raw_report) { | |
4291ee30 | 543 | hid_warn(hid, "control queueing failed\n"); |
f129ea6d AH |
544 | return; |
545 | } | |
546 | hid_output_report(report, usbhid->ctrl[usbhid->ctrlhead].raw_report); | |
547 | } | |
48b4554a JK |
548 | usbhid->ctrl[usbhid->ctrlhead].report = report; |
549 | usbhid->ctrl[usbhid->ctrlhead].dir = dir; | |
550 | usbhid->ctrlhead = head; | |
8fd80133 | 551 | |
858155fb | 552 | if (!test_and_set_bit(HID_CTRL_RUNNING, &usbhid->iofl)) { |
48b4554a JK |
553 | if (hid_submit_ctrl(hid)) |
554 | clear_bit(HID_CTRL_RUNNING, &usbhid->iofl); | |
858155fb ON |
555 | } else { |
556 | /* | |
557 | * the queue is known to run | |
558 | * but an earlier request may be stuck | |
559 | * we may need to time out | |
560 | * no race because this is called under | |
561 | * spinlock | |
562 | */ | |
563 | if (time_after(jiffies, usbhid->last_ctrl + HZ * 5)) | |
564 | usb_unlink_urb(usbhid->urbctrl); | |
565 | } | |
0361a28d | 566 | } |
931e24b9 | 567 | |
0361a28d ON |
568 | void usbhid_submit_report(struct hid_device *hid, struct hid_report *report, unsigned char dir) |
569 | { | |
570 | struct usbhid_device *usbhid = hid->driver_data; | |
571 | unsigned long flags; | |
931e24b9 | 572 | |
0361a28d ON |
573 | spin_lock_irqsave(&usbhid->lock, flags); |
574 | __usbhid_submit_report(hid, report, dir); | |
575 | spin_unlock_irqrestore(&usbhid->lock, flags); | |
48b4554a | 576 | } |
606bd0a8 | 577 | EXPORT_SYMBOL_GPL(usbhid_submit_report); |
23b0d968 | 578 | |
48b4554a JK |
579 | static int usb_hidinput_input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) |
580 | { | |
e0712985 | 581 | struct hid_device *hid = input_get_drvdata(dev); |
0361a28d | 582 | struct usbhid_device *usbhid = hid->driver_data; |
48b4554a | 583 | struct hid_field *field; |
0361a28d | 584 | unsigned long flags; |
48b4554a | 585 | int offset; |
41ad5fba | 586 | |
48b4554a JK |
587 | if (type == EV_FF) |
588 | return input_ff_event(dev, type, code, value); | |
8d2bad87 | 589 | |
48b4554a JK |
590 | if (type != EV_LED) |
591 | return -1; | |
5556feae | 592 | |
48b4554a | 593 | if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) { |
4291ee30 | 594 | hid_warn(dev, "event field not found\n"); |
48b4554a JK |
595 | return -1; |
596 | } | |
4a1a4d8b | 597 | |
48b4554a | 598 | hid_set_field(field, offset, value); |
0361a28d ON |
599 | if (value) { |
600 | spin_lock_irqsave(&usbhid->lock, flags); | |
601 | usbhid->ledcount++; | |
602 | spin_unlock_irqrestore(&usbhid->lock, flags); | |
603 | } else { | |
604 | spin_lock_irqsave(&usbhid->lock, flags); | |
605 | usbhid->ledcount--; | |
606 | spin_unlock_irqrestore(&usbhid->lock, flags); | |
607 | } | |
48b4554a | 608 | usbhid_submit_report(hid, field->report, USB_DIR_OUT); |
1da177e4 | 609 | |
48b4554a JK |
610 | return 0; |
611 | } | |
1da177e4 | 612 | |
48b4554a JK |
613 | int usbhid_wait_io(struct hid_device *hid) |
614 | { | |
615 | struct usbhid_device *usbhid = hid->driver_data; | |
25914662 | 616 | |
1d1bdd20 JS |
617 | if (!wait_event_timeout(usbhid->wait, |
618 | (!test_bit(HID_CTRL_RUNNING, &usbhid->iofl) && | |
619 | !test_bit(HID_OUT_RUNNING, &usbhid->iofl)), | |
48b4554a | 620 | 10*HZ)) { |
58037eb9 | 621 | dbg_hid("timeout waiting for ctrl or out queue to clear\n"); |
48b4554a JK |
622 | return -1; |
623 | } | |
1da177e4 | 624 | |
48b4554a JK |
625 | return 0; |
626 | } | |
b8c21cf6 | 627 | EXPORT_SYMBOL_GPL(usbhid_wait_io); |
53880546 | 628 | |
48b4554a JK |
629 | static int hid_set_idle(struct usb_device *dev, int ifnum, int report, int idle) |
630 | { | |
631 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
632 | HID_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE, (idle << 8) | report, | |
633 | ifnum, NULL, 0, USB_CTRL_SET_TIMEOUT); | |
634 | } | |
1da177e4 | 635 | |
48b4554a JK |
636 | static int hid_get_class_descriptor(struct usb_device *dev, int ifnum, |
637 | unsigned char type, void *buf, int size) | |
638 | { | |
639 | int result, retries = 4; | |
1da177e4 | 640 | |
48b4554a | 641 | memset(buf, 0, size); |
1da177e4 | 642 | |
48b4554a JK |
643 | do { |
644 | result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), | |
645 | USB_REQ_GET_DESCRIPTOR, USB_RECIP_INTERFACE | USB_DIR_IN, | |
646 | (type << 8), ifnum, buf, size, USB_CTRL_GET_TIMEOUT); | |
647 | retries--; | |
648 | } while (result < size && retries); | |
649 | return result; | |
650 | } | |
940824b0 | 651 | |
48b4554a JK |
652 | int usbhid_open(struct hid_device *hid) |
653 | { | |
933e3187 ON |
654 | struct usbhid_device *usbhid = hid->driver_data; |
655 | int res; | |
656 | ||
0361a28d | 657 | mutex_lock(&hid_open_mut); |
933e3187 ON |
658 | if (!hid->open++) { |
659 | res = usb_autopm_get_interface(usbhid->intf); | |
68229689 | 660 | /* the device must be awake to reliably request remote wakeup */ |
933e3187 ON |
661 | if (res < 0) { |
662 | hid->open--; | |
0361a28d | 663 | mutex_unlock(&hid_open_mut); |
933e3187 ON |
664 | return -EIO; |
665 | } | |
0361a28d ON |
666 | usbhid->intf->needs_remote_wakeup = 1; |
667 | if (hid_start_in(hid)) | |
668 | hid_io_error(hid); | |
669 | ||
670 | usb_autopm_put_interface(usbhid->intf); | |
933e3187 | 671 | } |
0361a28d | 672 | mutex_unlock(&hid_open_mut); |
48b4554a JK |
673 | return 0; |
674 | } | |
a417a21e | 675 | |
48b4554a JK |
676 | void usbhid_close(struct hid_device *hid) |
677 | { | |
678 | struct usbhid_device *usbhid = hid->driver_data; | |
eab9edd2 | 679 | |
0361a28d ON |
680 | mutex_lock(&hid_open_mut); |
681 | ||
682 | /* protecting hid->open to make sure we don't restart | |
683 | * data acquistion due to a resumption we no longer | |
684 | * care about | |
685 | */ | |
686 | spin_lock_irq(&usbhid->lock); | |
933e3187 | 687 | if (!--hid->open) { |
0361a28d | 688 | spin_unlock_irq(&usbhid->lock); |
89092ddd | 689 | hid_cancel_delayed_stuff(usbhid); |
48b4554a | 690 | usb_kill_urb(usbhid->urbin); |
0361a28d ON |
691 | usbhid->intf->needs_remote_wakeup = 0; |
692 | } else { | |
693 | spin_unlock_irq(&usbhid->lock); | |
933e3187 | 694 | } |
0361a28d | 695 | mutex_unlock(&hid_open_mut); |
48b4554a | 696 | } |
1d3e2023 | 697 | |
48b4554a JK |
698 | /* |
699 | * Initialize all reports | |
700 | */ | |
41ad5fba | 701 | |
48b4554a JK |
702 | void usbhid_init_reports(struct hid_device *hid) |
703 | { | |
704 | struct hid_report *report; | |
705 | struct usbhid_device *usbhid = hid->driver_data; | |
706 | int err, ret; | |
41ad5fba | 707 | |
48b4554a JK |
708 | list_for_each_entry(report, &hid->report_enum[HID_INPUT_REPORT].report_list, list) |
709 | usbhid_submit_report(hid, report, USB_DIR_IN); | |
5556feae | 710 | |
48b4554a JK |
711 | list_for_each_entry(report, &hid->report_enum[HID_FEATURE_REPORT].report_list, list) |
712 | usbhid_submit_report(hid, report, USB_DIR_IN); | |
4a1a4d8b | 713 | |
48b4554a JK |
714 | err = 0; |
715 | ret = usbhid_wait_io(hid); | |
716 | while (ret) { | |
717 | err |= ret; | |
718 | if (test_bit(HID_CTRL_RUNNING, &usbhid->iofl)) | |
719 | usb_kill_urb(usbhid->urbctrl); | |
720 | if (test_bit(HID_OUT_RUNNING, &usbhid->iofl)) | |
721 | usb_kill_urb(usbhid->urbout); | |
722 | ret = usbhid_wait_io(hid); | |
723 | } | |
3f9b4076 | 724 | |
48b4554a | 725 | if (err) |
4291ee30 | 726 | hid_warn(hid, "timeout initializing reports\n"); |
48b4554a | 727 | } |
1da177e4 | 728 | |
713c8aad PZ |
729 | /* |
730 | * Reset LEDs which BIOS might have left on. For now, just NumLock (0x01). | |
731 | */ | |
732 | static int hid_find_field_early(struct hid_device *hid, unsigned int page, | |
733 | unsigned int hid_code, struct hid_field **pfield) | |
734 | { | |
735 | struct hid_report *report; | |
736 | struct hid_field *field; | |
737 | struct hid_usage *usage; | |
738 | int i, j; | |
739 | ||
740 | list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) { | |
741 | for (i = 0; i < report->maxfield; i++) { | |
742 | field = report->field[i]; | |
743 | for (j = 0; j < field->maxusage; j++) { | |
744 | usage = &field->usage[j]; | |
745 | if ((usage->hid & HID_USAGE_PAGE) == page && | |
746 | (usage->hid & 0xFFFF) == hid_code) { | |
747 | *pfield = field; | |
748 | return j; | |
749 | } | |
750 | } | |
751 | } | |
752 | } | |
753 | return -1; | |
754 | } | |
755 | ||
6edfa8dc | 756 | void usbhid_set_leds(struct hid_device *hid) |
713c8aad PZ |
757 | { |
758 | struct hid_field *field; | |
759 | int offset; | |
760 | ||
761 | if ((offset = hid_find_field_early(hid, HID_UP_LED, 0x01, &field)) != -1) { | |
762 | hid_set_field(field, offset, 0); | |
763 | usbhid_submit_report(hid, field->report, USB_DIR_OUT); | |
764 | } | |
765 | } | |
6edfa8dc | 766 | EXPORT_SYMBOL_GPL(usbhid_set_leds); |
713c8aad | 767 | |
bf0964dc MH |
768 | /* |
769 | * Traverse the supplied list of reports and find the longest | |
770 | */ | |
282bfd4c JS |
771 | static void hid_find_max_report(struct hid_device *hid, unsigned int type, |
772 | unsigned int *max) | |
bf0964dc MH |
773 | { |
774 | struct hid_report *report; | |
282bfd4c | 775 | unsigned int size; |
bf0964dc MH |
776 | |
777 | list_for_each_entry(report, &hid->report_enum[type].report_list, list) { | |
efc7ce18 | 778 | size = ((report->size - 1) >> 3) + 1 + hid->report_enum[type].numbered; |
bf0964dc MH |
779 | if (*max < size) |
780 | *max = size; | |
781 | } | |
782 | } | |
783 | ||
1da177e4 LT |
784 | static int hid_alloc_buffers(struct usb_device *dev, struct hid_device *hid) |
785 | { | |
4916b3a5 JK |
786 | struct usbhid_device *usbhid = hid->driver_data; |
787 | ||
997ea58e | 788 | usbhid->inbuf = usb_alloc_coherent(dev, usbhid->bufsize, GFP_KERNEL, |
898089d0 | 789 | &usbhid->inbuf_dma); |
997ea58e | 790 | usbhid->outbuf = usb_alloc_coherent(dev, usbhid->bufsize, GFP_KERNEL, |
898089d0 | 791 | &usbhid->outbuf_dma); |
0ede76fc | 792 | usbhid->cr = kmalloc(sizeof(*usbhid->cr), GFP_KERNEL); |
997ea58e | 793 | usbhid->ctrlbuf = usb_alloc_coherent(dev, usbhid->bufsize, GFP_KERNEL, |
898089d0 JS |
794 | &usbhid->ctrlbuf_dma); |
795 | if (!usbhid->inbuf || !usbhid->outbuf || !usbhid->cr || | |
796 | !usbhid->ctrlbuf) | |
1da177e4 LT |
797 | return -1; |
798 | ||
799 | return 0; | |
800 | } | |
801 | ||
d4bfa033 JK |
802 | static int usbhid_output_raw_report(struct hid_device *hid, __u8 *buf, size_t count, |
803 | unsigned char report_type) | |
efc493f9 JK |
804 | { |
805 | struct usbhid_device *usbhid = hid->driver_data; | |
806 | struct usb_device *dev = hid_to_usb_dev(hid); | |
807 | struct usb_interface *intf = usbhid->intf; | |
808 | struct usb_host_interface *interface = intf->cur_altsetting; | |
809 | int ret; | |
810 | ||
fe2c91ee | 811 | if (usbhid->urbout && report_type != HID_FEATURE_REPORT) { |
a8ab5d58 AO |
812 | int actual_length; |
813 | int skipped_report_id = 0; | |
12e52725 | 814 | |
a8ab5d58 AO |
815 | if (buf[0] == 0x0) { |
816 | /* Don't send the Report ID */ | |
817 | buf++; | |
818 | count--; | |
819 | skipped_report_id = 1; | |
820 | } | |
821 | ret = usb_interrupt_msg(dev, usbhid->urbout->pipe, | |
822 | buf, count, &actual_length, | |
823 | USB_CTRL_SET_TIMEOUT); | |
824 | /* return the number of bytes transferred */ | |
825 | if (ret == 0) { | |
826 | ret = actual_length; | |
827 | /* count also the report id */ | |
828 | if (skipped_report_id) | |
829 | ret++; | |
830 | } | |
831 | } else { | |
29129a98 | 832 | int skipped_report_id = 0; |
c29771c2 | 833 | int report_id = buf[0]; |
29129a98 AO |
834 | if (buf[0] == 0x0) { |
835 | /* Don't send the Report ID */ | |
836 | buf++; | |
837 | count--; | |
838 | skipped_report_id = 1; | |
839 | } | |
a8ab5d58 AO |
840 | ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
841 | HID_REQ_SET_REPORT, | |
842 | USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE, | |
c29771c2 | 843 | ((report_type + 1) << 8) | report_id, |
29129a98 | 844 | interface->desc.bInterfaceNumber, buf, count, |
a8ab5d58 | 845 | USB_CTRL_SET_TIMEOUT); |
29129a98 AO |
846 | /* count also the report id, if this was a numbered report. */ |
847 | if (ret > 0 && skipped_report_id) | |
a8ab5d58 AO |
848 | ret++; |
849 | } | |
efc493f9 JK |
850 | |
851 | return ret; | |
852 | } | |
853 | ||
0361a28d ON |
854 | static void usbhid_restart_queues(struct usbhid_device *usbhid) |
855 | { | |
856 | if (usbhid->urbout) | |
857 | usbhid_restart_out_queue(usbhid); | |
858 | usbhid_restart_ctrl_queue(usbhid); | |
859 | } | |
860 | ||
1da177e4 LT |
861 | static void hid_free_buffers(struct usb_device *dev, struct hid_device *hid) |
862 | { | |
4916b3a5 JK |
863 | struct usbhid_device *usbhid = hid->driver_data; |
864 | ||
997ea58e DM |
865 | usb_free_coherent(dev, usbhid->bufsize, usbhid->inbuf, usbhid->inbuf_dma); |
866 | usb_free_coherent(dev, usbhid->bufsize, usbhid->outbuf, usbhid->outbuf_dma); | |
0ede76fc | 867 | kfree(usbhid->cr); |
997ea58e | 868 | usb_free_coherent(dev, usbhid->bufsize, usbhid->ctrlbuf, usbhid->ctrlbuf_dma); |
1da177e4 LT |
869 | } |
870 | ||
c500c971 JS |
871 | static int usbhid_parse(struct hid_device *hid) |
872 | { | |
873 | struct usb_interface *intf = to_usb_interface(hid->dev.parent); | |
1da177e4 LT |
874 | struct usb_host_interface *interface = intf->cur_altsetting; |
875 | struct usb_device *dev = interface_to_usbdev (intf); | |
876 | struct hid_descriptor *hdesc; | |
2eb5dc30 | 877 | u32 quirks = 0; |
c500c971 | 878 | unsigned int rsize = 0; |
c5b7c7c3 | 879 | char *rdesc; |
c500c971 | 880 | int ret, n; |
1da177e4 | 881 | |
2eb5dc30 PW |
882 | quirks = usbhid_lookup_quirk(le16_to_cpu(dev->descriptor.idVendor), |
883 | le16_to_cpu(dev->descriptor.idProduct)); | |
1da177e4 | 884 | |
6f4303fb JK |
885 | if (quirks & HID_QUIRK_IGNORE) |
886 | return -ENODEV; | |
887 | ||
0f28b55d AS |
888 | /* Many keyboards and mice don't like to be polled for reports, |
889 | * so we will always set the HID_QUIRK_NOGET flag for them. */ | |
890 | if (interface->desc.bInterfaceSubClass == USB_INTERFACE_SUBCLASS_BOOT) { | |
891 | if (interface->desc.bInterfaceProtocol == USB_INTERFACE_PROTOCOL_KEYBOARD || | |
892 | interface->desc.bInterfaceProtocol == USB_INTERFACE_PROTOCOL_MOUSE) | |
893 | quirks |= HID_QUIRK_NOGET; | |
894 | } | |
895 | ||
c5b7c7c3 DT |
896 | if (usb_get_extra_descriptor(interface, HID_DT_HID, &hdesc) && |
897 | (!interface->desc.bNumEndpoints || | |
898 | usb_get_extra_descriptor(&interface->endpoint[0], HID_DT_HID, &hdesc))) { | |
58037eb9 | 899 | dbg_hid("class descriptor not present\n"); |
c500c971 | 900 | return -ENODEV; |
1da177e4 LT |
901 | } |
902 | ||
c500c971 JS |
903 | hid->version = le16_to_cpu(hdesc->bcdHID); |
904 | hid->country = hdesc->bCountryCode; | |
905 | ||
1da177e4 LT |
906 | for (n = 0; n < hdesc->bNumDescriptors; n++) |
907 | if (hdesc->desc[n].bDescriptorType == HID_DT_REPORT) | |
908 | rsize = le16_to_cpu(hdesc->desc[n].wDescriptorLength); | |
909 | ||
910 | if (!rsize || rsize > HID_MAX_DESCRIPTOR_SIZE) { | |
58037eb9 | 911 | dbg_hid("weird size of report descriptor (%u)\n", rsize); |
c500c971 | 912 | return -EINVAL; |
1da177e4 LT |
913 | } |
914 | ||
915 | if (!(rdesc = kmalloc(rsize, GFP_KERNEL))) { | |
58037eb9 | 916 | dbg_hid("couldn't allocate rdesc memory\n"); |
c500c971 | 917 | return -ENOMEM; |
1da177e4 LT |
918 | } |
919 | ||
854561b0 VP |
920 | hid_set_idle(dev, interface->desc.bInterfaceNumber, 0, 0); |
921 | ||
c500c971 JS |
922 | ret = hid_get_class_descriptor(dev, interface->desc.bInterfaceNumber, |
923 | HID_DT_REPORT, rdesc, rsize); | |
924 | if (ret < 0) { | |
58037eb9 | 925 | dbg_hid("reading report descriptor failed\n"); |
1da177e4 | 926 | kfree(rdesc); |
c500c971 | 927 | goto err; |
1da177e4 LT |
928 | } |
929 | ||
c500c971 JS |
930 | ret = hid_parse_report(hid, rdesc, rsize); |
931 | kfree(rdesc); | |
932 | if (ret) { | |
58037eb9 | 933 | dbg_hid("parsing report descriptor failed\n"); |
c500c971 | 934 | goto err; |
1da177e4 LT |
935 | } |
936 | ||
f5208997 | 937 | hid->quirks |= quirks; |
1da177e4 | 938 | |
c500c971 JS |
939 | return 0; |
940 | err: | |
941 | return ret; | |
942 | } | |
943 | ||
944 | static int usbhid_start(struct hid_device *hid) | |
945 | { | |
946 | struct usb_interface *intf = to_usb_interface(hid->dev.parent); | |
947 | struct usb_host_interface *interface = intf->cur_altsetting; | |
948 | struct usb_device *dev = interface_to_usbdev(intf); | |
3d5afd32 | 949 | struct usbhid_device *usbhid = hid->driver_data; |
c500c971 JS |
950 | unsigned int n, insize = 0; |
951 | int ret; | |
952 | ||
e3e14de5 JS |
953 | clear_bit(HID_DISCONNECTED, &usbhid->iofl); |
954 | ||
4916b3a5 JK |
955 | usbhid->bufsize = HID_MIN_BUFFER_SIZE; |
956 | hid_find_max_report(hid, HID_INPUT_REPORT, &usbhid->bufsize); | |
957 | hid_find_max_report(hid, HID_OUTPUT_REPORT, &usbhid->bufsize); | |
958 | hid_find_max_report(hid, HID_FEATURE_REPORT, &usbhid->bufsize); | |
bf0964dc | 959 | |
4916b3a5 JK |
960 | if (usbhid->bufsize > HID_MAX_BUFFER_SIZE) |
961 | usbhid->bufsize = HID_MAX_BUFFER_SIZE; | |
bf0964dc MH |
962 | |
963 | hid_find_max_report(hid, HID_INPUT_REPORT, &insize); | |
964 | ||
965 | if (insize > HID_MAX_BUFFER_SIZE) | |
966 | insize = HID_MAX_BUFFER_SIZE; | |
967 | ||
c500c971 JS |
968 | if (hid_alloc_buffers(dev, hid)) { |
969 | ret = -ENOMEM; | |
1da177e4 | 970 | goto fail; |
f345c37c PS |
971 | } |
972 | ||
1da177e4 | 973 | for (n = 0; n < interface->desc.bNumEndpoints; n++) { |
1da177e4 LT |
974 | struct usb_endpoint_descriptor *endpoint; |
975 | int pipe; | |
976 | int interval; | |
977 | ||
978 | endpoint = &interface->endpoint[n].desc; | |
581a2739 | 979 | if (!usb_endpoint_xfer_int(endpoint)) |
1da177e4 LT |
980 | continue; |
981 | ||
1da177e4 | 982 | interval = endpoint->bInterval; |
1da177e4 | 983 | |
f345c37c | 984 | /* Some vendors give fullspeed interval on highspeed devides */ |
c500c971 | 985 | if (hid->quirks & HID_QUIRK_FULLSPEED_INTERVAL && |
f345c37c PS |
986 | dev->speed == USB_SPEED_HIGH) { |
987 | interval = fls(endpoint->bInterval*8); | |
988 | printk(KERN_INFO "%s: Fixing fullspeed to highspeed interval: %d -> %d\n", | |
989 | hid->name, endpoint->bInterval, interval); | |
990 | } | |
991 | ||
1da177e4 LT |
992 | /* Change the polling interval of mice. */ |
993 | if (hid->collection->usage == HID_GD_MOUSE && hid_mousepoll_interval > 0) | |
994 | interval = hid_mousepoll_interval; | |
05f091ab | 995 | |
c500c971 | 996 | ret = -ENOMEM; |
0f12aa03 | 997 | if (usb_endpoint_dir_in(endpoint)) { |
4916b3a5 | 998 | if (usbhid->urbin) |
1da177e4 | 999 | continue; |
4916b3a5 | 1000 | if (!(usbhid->urbin = usb_alloc_urb(0, GFP_KERNEL))) |
1da177e4 LT |
1001 | goto fail; |
1002 | pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress); | |
4916b3a5 | 1003 | usb_fill_int_urb(usbhid->urbin, dev, pipe, usbhid->inbuf, insize, |
1da177e4 | 1004 | hid_irq_in, hid, interval); |
4916b3a5 JK |
1005 | usbhid->urbin->transfer_dma = usbhid->inbuf_dma; |
1006 | usbhid->urbin->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
1da177e4 | 1007 | } else { |
4916b3a5 | 1008 | if (usbhid->urbout) |
1da177e4 | 1009 | continue; |
4916b3a5 | 1010 | if (!(usbhid->urbout = usb_alloc_urb(0, GFP_KERNEL))) |
1da177e4 LT |
1011 | goto fail; |
1012 | pipe = usb_sndintpipe(dev, endpoint->bEndpointAddress); | |
4916b3a5 | 1013 | usb_fill_int_urb(usbhid->urbout, dev, pipe, usbhid->outbuf, 0, |
1da177e4 | 1014 | hid_irq_out, hid, interval); |
4916b3a5 JK |
1015 | usbhid->urbout->transfer_dma = usbhid->outbuf_dma; |
1016 | usbhid->urbout->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
1da177e4 LT |
1017 | } |
1018 | } | |
1019 | ||
4916b3a5 | 1020 | usbhid->urbctrl = usb_alloc_urb(0, GFP_KERNEL); |
c500c971 JS |
1021 | if (!usbhid->urbctrl) { |
1022 | ret = -ENOMEM; | |
1da177e4 | 1023 | goto fail; |
c500c971 | 1024 | } |
c5b7c7c3 | 1025 | |
4916b3a5 JK |
1026 | usb_fill_control_urb(usbhid->urbctrl, dev, 0, (void *) usbhid->cr, |
1027 | usbhid->ctrlbuf, 1, hid_ctrl, hid); | |
4916b3a5 | 1028 | usbhid->urbctrl->transfer_dma = usbhid->ctrlbuf_dma; |
0ede76fc | 1029 | usbhid->urbctrl->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
c500c971 | 1030 | |
5b915d9e JK |
1031 | if (!(hid->quirks & HID_QUIRK_NO_INIT_REPORTS)) |
1032 | usbhid_init_reports(hid); | |
93c10132 | 1033 | |
3d5afd32 | 1034 | set_bit(HID_STARTED, &usbhid->iofl); |
3d5afd32 | 1035 | |
08ef08ee AS |
1036 | /* Some keyboards don't work until their LEDs have been set. |
1037 | * Since BIOSes do set the LEDs, it must be safe for any device | |
1038 | * that supports the keyboard boot protocol. | |
3d61510f AS |
1039 | * In addition, enable remote wakeup by default for all keyboard |
1040 | * devices supporting the boot protocol. | |
08ef08ee AS |
1041 | */ |
1042 | if (interface->desc.bInterfaceSubClass == USB_INTERFACE_SUBCLASS_BOOT && | |
1043 | interface->desc.bInterfaceProtocol == | |
3d61510f | 1044 | USB_INTERFACE_PROTOCOL_KEYBOARD) { |
08ef08ee | 1045 | usbhid_set_leds(hid); |
3d61510f AS |
1046 | device_set_wakeup_enable(&dev->dev, 1); |
1047 | } | |
c500c971 | 1048 | return 0; |
1da177e4 LT |
1049 | |
1050 | fail: | |
4916b3a5 JK |
1051 | usb_free_urb(usbhid->urbin); |
1052 | usb_free_urb(usbhid->urbout); | |
1053 | usb_free_urb(usbhid->urbctrl); | |
e3e14de5 JS |
1054 | usbhid->urbin = NULL; |
1055 | usbhid->urbout = NULL; | |
1056 | usbhid->urbctrl = NULL; | |
22f675f3 | 1057 | hid_free_buffers(dev, hid); |
c500c971 | 1058 | return ret; |
1da177e4 LT |
1059 | } |
1060 | ||
c500c971 | 1061 | static void usbhid_stop(struct hid_device *hid) |
1da177e4 | 1062 | { |
c500c971 | 1063 | struct usbhid_device *usbhid = hid->driver_data; |
1da177e4 | 1064 | |
c500c971 | 1065 | if (WARN_ON(!usbhid)) |
1da177e4 LT |
1066 | return; |
1067 | ||
3d5afd32 | 1068 | clear_bit(HID_STARTED, &usbhid->iofl); |
0361a28d | 1069 | spin_lock_irq(&usbhid->lock); /* Sync with error handler */ |
69626f23 | 1070 | set_bit(HID_DISCONNECTED, &usbhid->iofl); |
0361a28d | 1071 | spin_unlock_irq(&usbhid->lock); |
4916b3a5 JK |
1072 | usb_kill_urb(usbhid->urbin); |
1073 | usb_kill_urb(usbhid->urbout); | |
1074 | usb_kill_urb(usbhid->urbctrl); | |
1da177e4 | 1075 | |
0361a28d | 1076 | hid_cancel_delayed_stuff(usbhid); |
aef4e266 | 1077 | |
c500c971 JS |
1078 | hid->claimed = 0; |
1079 | ||
4916b3a5 JK |
1080 | usb_free_urb(usbhid->urbin); |
1081 | usb_free_urb(usbhid->urbctrl); | |
1082 | usb_free_urb(usbhid->urbout); | |
e3e14de5 JS |
1083 | usbhid->urbin = NULL; /* don't mess up next start */ |
1084 | usbhid->urbctrl = NULL; | |
1085 | usbhid->urbout = NULL; | |
1da177e4 | 1086 | |
be820975 | 1087 | hid_free_buffers(hid_to_usb_dev(hid), hid); |
1da177e4 LT |
1088 | } |
1089 | ||
0361a28d ON |
1090 | static int usbhid_power(struct hid_device *hid, int lvl) |
1091 | { | |
1092 | int r = 0; | |
1093 | ||
1094 | switch (lvl) { | |
1095 | case PM_HINT_FULLON: | |
1096 | r = usbhid_get_power(hid); | |
1097 | break; | |
1098 | case PM_HINT_NORMAL: | |
1099 | usbhid_put_power(hid); | |
1100 | break; | |
1101 | } | |
1102 | return r; | |
1103 | } | |
1104 | ||
c500c971 JS |
1105 | static struct hid_ll_driver usb_hid_driver = { |
1106 | .parse = usbhid_parse, | |
1107 | .start = usbhid_start, | |
1108 | .stop = usbhid_stop, | |
1109 | .open = usbhid_open, | |
1110 | .close = usbhid_close, | |
0361a28d | 1111 | .power = usbhid_power, |
c500c971 JS |
1112 | .hidinput_input_event = usb_hidinput_input_event, |
1113 | }; | |
1114 | ||
c4c259bc | 1115 | static int usbhid_probe(struct usb_interface *intf, const struct usb_device_id *id) |
1da177e4 | 1116 | { |
131d3a7a | 1117 | struct usb_host_interface *interface = intf->cur_altsetting; |
c500c971 | 1118 | struct usb_device *dev = interface_to_usbdev(intf); |
3d5afd32 | 1119 | struct usbhid_device *usbhid; |
1da177e4 | 1120 | struct hid_device *hid; |
131d3a7a | 1121 | unsigned int n, has_in = 0; |
c500c971 JS |
1122 | size_t len; |
1123 | int ret; | |
1da177e4 | 1124 | |
58037eb9 | 1125 | dbg_hid("HID probe called for ifnum %d\n", |
1da177e4 LT |
1126 | intf->altsetting->desc.bInterfaceNumber); |
1127 | ||
131d3a7a JS |
1128 | for (n = 0; n < interface->desc.bNumEndpoints; n++) |
1129 | if (usb_endpoint_is_int_in(&interface->endpoint[n].desc)) | |
1130 | has_in++; | |
1131 | if (!has_in) { | |
4291ee30 | 1132 | hid_err(intf, "couldn't find an input interrupt endpoint\n"); |
131d3a7a JS |
1133 | return -ENODEV; |
1134 | } | |
1135 | ||
c500c971 JS |
1136 | hid = hid_allocate_device(); |
1137 | if (IS_ERR(hid)) | |
1138 | return PTR_ERR(hid); | |
1da177e4 LT |
1139 | |
1140 | usb_set_intfdata(intf, hid); | |
c500c971 JS |
1141 | hid->ll_driver = &usb_hid_driver; |
1142 | hid->hid_output_raw_report = usbhid_output_raw_report; | |
76483cf4 | 1143 | hid->ff_init = hid_pidff_init; |
c500c971 | 1144 | #ifdef CONFIG_USB_HIDDEV |
93c10132 | 1145 | hid->hiddev_connect = hiddev_connect; |
c4c259bc | 1146 | hid->hiddev_disconnect = hiddev_disconnect; |
c500c971 JS |
1147 | hid->hiddev_hid_event = hiddev_hid_event; |
1148 | hid->hiddev_report_event = hiddev_report_event; | |
1149 | #endif | |
1150 | hid->dev.parent = &intf->dev; | |
1151 | hid->bus = BUS_USB; | |
1152 | hid->vendor = le16_to_cpu(dev->descriptor.idVendor); | |
1153 | hid->product = le16_to_cpu(dev->descriptor.idProduct); | |
1154 | hid->name[0] = 0; | |
b5e5a37e | 1155 | hid->quirks = usbhid_lookup_quirk(hid->vendor, hid->product); |
a73a6370 JS |
1156 | if (intf->cur_altsetting->desc.bInterfaceProtocol == |
1157 | USB_INTERFACE_PROTOCOL_MOUSE) | |
1158 | hid->type = HID_TYPE_USBMOUSE; | |
1da177e4 | 1159 | |
c500c971 JS |
1160 | if (dev->manufacturer) |
1161 | strlcpy(hid->name, dev->manufacturer, sizeof(hid->name)); | |
1da177e4 | 1162 | |
c500c971 JS |
1163 | if (dev->product) { |
1164 | if (dev->manufacturer) | |
1165 | strlcat(hid->name, " ", sizeof(hid->name)); | |
1166 | strlcat(hid->name, dev->product, sizeof(hid->name)); | |
1da177e4 LT |
1167 | } |
1168 | ||
c500c971 JS |
1169 | if (!strlen(hid->name)) |
1170 | snprintf(hid->name, sizeof(hid->name), "HID %04x:%04x", | |
1171 | le16_to_cpu(dev->descriptor.idVendor), | |
1172 | le16_to_cpu(dev->descriptor.idProduct)); | |
1da177e4 | 1173 | |
c500c971 JS |
1174 | usb_make_path(dev, hid->phys, sizeof(hid->phys)); |
1175 | strlcat(hid->phys, "/input", sizeof(hid->phys)); | |
1176 | len = strlen(hid->phys); | |
1177 | if (len < sizeof(hid->phys) - 1) | |
1178 | snprintf(hid->phys + len, sizeof(hid->phys) - len, | |
1179 | "%d", intf->altsetting[0].desc.bInterfaceNumber); | |
1180 | ||
1181 | if (usb_string(dev, dev->descriptor.iSerialNumber, hid->uniq, 64) <= 0) | |
1182 | hid->uniq[0] = 0; | |
1da177e4 | 1183 | |
3d5afd32 JS |
1184 | usbhid = kzalloc(sizeof(*usbhid), GFP_KERNEL); |
1185 | if (usbhid == NULL) { | |
1186 | ret = -ENOMEM; | |
1187 | goto err; | |
1188 | } | |
1189 | ||
1190 | hid->driver_data = usbhid; | |
1191 | usbhid->hid = hid; | |
57ab12e4 JK |
1192 | usbhid->intf = intf; |
1193 | usbhid->ifnum = interface->desc.bInterfaceNumber; | |
3d5afd32 | 1194 | |
fde4e2f7 AS |
1195 | init_waitqueue_head(&usbhid->wait); |
1196 | INIT_WORK(&usbhid->reset_work, hid_reset); | |
fde4e2f7 AS |
1197 | setup_timer(&usbhid->io_retry, hid_retry_timeout, (unsigned long) hid); |
1198 | spin_lock_init(&usbhid->lock); | |
1199 | ||
85cdaf52 JS |
1200 | ret = hid_add_device(hid); |
1201 | if (ret) { | |
d458a9df | 1202 | if (ret != -ENODEV) |
4291ee30 | 1203 | hid_err(intf, "can't add hid device: %d\n", ret); |
3d5afd32 | 1204 | goto err_free; |
85cdaf52 | 1205 | } |
c500c971 JS |
1206 | |
1207 | return 0; | |
3d5afd32 JS |
1208 | err_free: |
1209 | kfree(usbhid); | |
c500c971 JS |
1210 | err: |
1211 | hid_destroy_device(hid); | |
85cdaf52 | 1212 | return ret; |
1da177e4 LT |
1213 | } |
1214 | ||
c4c259bc | 1215 | static void usbhid_disconnect(struct usb_interface *intf) |
c500c971 JS |
1216 | { |
1217 | struct hid_device *hid = usb_get_intfdata(intf); | |
3d5afd32 | 1218 | struct usbhid_device *usbhid; |
c500c971 JS |
1219 | |
1220 | if (WARN_ON(!hid)) | |
1221 | return; | |
1222 | ||
3d5afd32 | 1223 | usbhid = hid->driver_data; |
c500c971 | 1224 | hid_destroy_device(hid); |
3d5afd32 | 1225 | kfree(usbhid); |
c500c971 JS |
1226 | } |
1227 | ||
0361a28d ON |
1228 | static void hid_cancel_delayed_stuff(struct usbhid_device *usbhid) |
1229 | { | |
1230 | del_timer_sync(&usbhid->io_retry); | |
0361a28d ON |
1231 | cancel_work_sync(&usbhid->reset_work); |
1232 | } | |
1233 | ||
1234 | static void hid_cease_io(struct usbhid_device *usbhid) | |
1235 | { | |
1236 | del_timer(&usbhid->io_retry); | |
1237 | usb_kill_urb(usbhid->urbin); | |
1238 | usb_kill_urb(usbhid->urbctrl); | |
1239 | usb_kill_urb(usbhid->urbout); | |
0361a28d ON |
1240 | } |
1241 | ||
ae2f0074 JK |
1242 | /* Treat USB reset pretty much the same as suspend/resume */ |
1243 | static int hid_pre_reset(struct usb_interface *intf) | |
1244 | { | |
1245 | struct hid_device *hid = usb_get_intfdata(intf); | |
1246 | struct usbhid_device *usbhid = hid->driver_data; | |
1247 | ||
1248 | spin_lock_irq(&usbhid->lock); | |
1249 | set_bit(HID_RESET_PENDING, &usbhid->iofl); | |
1250 | spin_unlock_irq(&usbhid->lock); | |
1251 | hid_cease_io(usbhid); | |
1252 | ||
1253 | return 0; | |
1254 | } | |
1255 | ||
1256 | /* Same routine used for post_reset and reset_resume */ | |
1257 | static int hid_post_reset(struct usb_interface *intf) | |
1258 | { | |
1259 | struct usb_device *dev = interface_to_usbdev (intf); | |
1260 | struct hid_device *hid = usb_get_intfdata(intf); | |
1261 | struct usbhid_device *usbhid = hid->driver_data; | |
1262 | int status; | |
70fa9f2e | 1263 | |
ae2f0074 JK |
1264 | spin_lock_irq(&usbhid->lock); |
1265 | clear_bit(HID_RESET_PENDING, &usbhid->iofl); | |
1266 | spin_unlock_irq(&usbhid->lock); | |
1267 | hid_set_idle(dev, intf->cur_altsetting->desc.bInterfaceNumber, 0, 0); | |
ae2f0074 JK |
1268 | status = hid_start_in(hid); |
1269 | if (status < 0) | |
1270 | hid_io_error(hid); | |
1271 | usbhid_restart_queues(usbhid); | |
1272 | ||
1273 | return 0; | |
1274 | } | |
1275 | ||
1276 | int usbhid_get_power(struct hid_device *hid) | |
1277 | { | |
1278 | struct usbhid_device *usbhid = hid->driver_data; | |
70fa9f2e | 1279 | |
ae2f0074 JK |
1280 | return usb_autopm_get_interface(usbhid->intf); |
1281 | } | |
1282 | ||
1283 | void usbhid_put_power(struct hid_device *hid) | |
1284 | { | |
1285 | struct usbhid_device *usbhid = hid->driver_data; | |
70fa9f2e | 1286 | |
ae2f0074 JK |
1287 | usb_autopm_put_interface(usbhid->intf); |
1288 | } | |
1289 | ||
1290 | ||
0f6f1407 | 1291 | #ifdef CONFIG_PM |
27d72e85 | 1292 | static int hid_suspend(struct usb_interface *intf, pm_message_t message) |
1da177e4 | 1293 | { |
0361a28d | 1294 | struct hid_device *hid = usb_get_intfdata(intf); |
4916b3a5 | 1295 | struct usbhid_device *usbhid = hid->driver_data; |
0361a28d | 1296 | int status; |
1da177e4 | 1297 | |
fb34d537 | 1298 | if (message.event & PM_EVENT_AUTO) { |
0361a28d ON |
1299 | spin_lock_irq(&usbhid->lock); /* Sync with error handler */ |
1300 | if (!test_bit(HID_RESET_PENDING, &usbhid->iofl) | |
1301 | && !test_bit(HID_CLEAR_HALT, &usbhid->iofl) | |
1302 | && !test_bit(HID_OUT_RUNNING, &usbhid->iofl) | |
1303 | && !test_bit(HID_CTRL_RUNNING, &usbhid->iofl) | |
1304 | && !test_bit(HID_KEYS_PRESSED, &usbhid->iofl) | |
1305 | && (!usbhid->ledcount || ignoreled)) | |
1306 | { | |
1307 | set_bit(HID_REPORTED_IDLE, &usbhid->iofl); | |
1308 | spin_unlock_irq(&usbhid->lock); | |
6a740aa4 BP |
1309 | if (hid->driver && hid->driver->suspend) { |
1310 | status = hid->driver->suspend(hid, message); | |
1311 | if (status < 0) | |
1312 | return status; | |
1313 | } | |
0361a28d ON |
1314 | } else { |
1315 | usbhid_mark_busy(usbhid); | |
1316 | spin_unlock_irq(&usbhid->lock); | |
1317 | return -EBUSY; | |
1318 | } | |
3d5afd32 | 1319 | |
0361a28d | 1320 | } else { |
6a740aa4 BP |
1321 | if (hid->driver && hid->driver->suspend) { |
1322 | status = hid->driver->suspend(hid, message); | |
1323 | if (status < 0) | |
1324 | return status; | |
1325 | } | |
0361a28d ON |
1326 | spin_lock_irq(&usbhid->lock); |
1327 | set_bit(HID_REPORTED_IDLE, &usbhid->iofl); | |
1328 | spin_unlock_irq(&usbhid->lock); | |
1329 | if (usbhid_wait_io(hid) < 0) | |
1330 | return -EIO; | |
1331 | } | |
1332 | ||
fb34d537 | 1333 | if (!ignoreled && (message.event & PM_EVENT_AUTO)) { |
0361a28d ON |
1334 | spin_lock_irq(&usbhid->lock); |
1335 | if (test_bit(HID_LED_ON, &usbhid->iofl)) { | |
1336 | spin_unlock_irq(&usbhid->lock); | |
1337 | usbhid_mark_busy(usbhid); | |
1338 | return -EBUSY; | |
1339 | } | |
1340 | spin_unlock_irq(&usbhid->lock); | |
1341 | } | |
1342 | ||
1343 | hid_cancel_delayed_stuff(usbhid); | |
1344 | hid_cease_io(usbhid); | |
1345 | ||
fb34d537 AS |
1346 | if ((message.event & PM_EVENT_AUTO) && |
1347 | test_bit(HID_KEYS_PRESSED, &usbhid->iofl)) { | |
0361a28d ON |
1348 | /* lost race against keypresses */ |
1349 | status = hid_start_in(hid); | |
1350 | if (status < 0) | |
1351 | hid_io_error(hid); | |
1352 | usbhid_mark_busy(usbhid); | |
1353 | return -EBUSY; | |
1354 | } | |
1da177e4 LT |
1355 | dev_dbg(&intf->dev, "suspend\n"); |
1356 | return 0; | |
1357 | } | |
1358 | ||
1359 | static int hid_resume(struct usb_interface *intf) | |
1360 | { | |
1361 | struct hid_device *hid = usb_get_intfdata (intf); | |
4916b3a5 | 1362 | struct usbhid_device *usbhid = hid->driver_data; |
1da177e4 LT |
1363 | int status; |
1364 | ||
fde5be35 | 1365 | if (!test_bit(HID_STARTED, &usbhid->iofl)) |
3d5afd32 | 1366 | return 0; |
3d5afd32 | 1367 | |
0361a28d ON |
1368 | clear_bit(HID_REPORTED_IDLE, &usbhid->iofl); |
1369 | usbhid_mark_busy(usbhid); | |
1370 | ||
1371 | if (test_bit(HID_CLEAR_HALT, &usbhid->iofl) || | |
1372 | test_bit(HID_RESET_PENDING, &usbhid->iofl)) | |
1373 | schedule_work(&usbhid->reset_work); | |
4916b3a5 | 1374 | usbhid->retry_delay = 0; |
aef4e266 | 1375 | status = hid_start_in(hid); |
0361a28d ON |
1376 | if (status < 0) |
1377 | hid_io_error(hid); | |
1378 | usbhid_restart_queues(usbhid); | |
1da177e4 | 1379 | |
6a740aa4 BP |
1380 | if (status >= 0 && hid->driver && hid->driver->resume) { |
1381 | int ret = hid->driver->resume(hid); | |
1382 | if (ret < 0) | |
1383 | status = ret; | |
1384 | } | |
1da177e4 | 1385 | dev_dbg(&intf->dev, "resume status %d\n", status); |
f07600cf | 1386 | return 0; |
df9a1f48 AS |
1387 | } |
1388 | ||
378a0ede | 1389 | static int hid_reset_resume(struct usb_interface *intf) |
df9a1f48 | 1390 | { |
378a0ede ON |
1391 | struct hid_device *hid = usb_get_intfdata(intf); |
1392 | struct usbhid_device *usbhid = hid->driver_data; | |
6a740aa4 | 1393 | int status; |
df9a1f48 | 1394 | |
378a0ede | 1395 | clear_bit(HID_REPORTED_IDLE, &usbhid->iofl); |
6a740aa4 BP |
1396 | status = hid_post_reset(intf); |
1397 | if (status >= 0 && hid->driver && hid->driver->reset_resume) { | |
1398 | int ret = hid->driver->reset_resume(hid); | |
1399 | if (ret < 0) | |
1400 | status = ret; | |
1401 | } | |
1402 | return status; | |
df9a1f48 AS |
1403 | } |
1404 | ||
ae2f0074 | 1405 | #endif /* CONFIG_PM */ |
df9a1f48 | 1406 | |
d67dec5b | 1407 | static const struct usb_device_id hid_usb_ids[] = { |
1da177e4 LT |
1408 | { .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS, |
1409 | .bInterfaceClass = USB_INTERFACE_CLASS_HID }, | |
1410 | { } /* Terminating entry */ | |
1411 | }; | |
1412 | ||
1413 | MODULE_DEVICE_TABLE (usb, hid_usb_ids); | |
1414 | ||
1415 | static struct usb_driver hid_driver = { | |
1da177e4 | 1416 | .name = "usbhid", |
c4c259bc JK |
1417 | .probe = usbhid_probe, |
1418 | .disconnect = usbhid_disconnect, | |
0f6f1407 | 1419 | #ifdef CONFIG_PM |
1da177e4 LT |
1420 | .suspend = hid_suspend, |
1421 | .resume = hid_resume, | |
378a0ede | 1422 | .reset_resume = hid_reset_resume, |
0f6f1407 | 1423 | #endif |
df9a1f48 AS |
1424 | .pre_reset = hid_pre_reset, |
1425 | .post_reset = hid_post_reset, | |
1da177e4 | 1426 | .id_table = hid_usb_ids, |
933e3187 | 1427 | .supports_autosuspend = 1, |
1da177e4 LT |
1428 | }; |
1429 | ||
85cdaf52 JS |
1430 | static const struct hid_device_id hid_usb_table[] = { |
1431 | { HID_USB_DEVICE(HID_ANY_ID, HID_ANY_ID) }, | |
1432 | { } | |
1433 | }; | |
1434 | ||
8fe294ca GC |
1435 | struct usb_interface *usbhid_find_interface(int minor) |
1436 | { | |
1437 | return usb_find_interface(&hid_driver, minor); | |
1438 | } | |
1439 | ||
85cdaf52 JS |
1440 | static struct hid_driver hid_usb_driver = { |
1441 | .name = "generic-usb", | |
1442 | .id_table = hid_usb_table, | |
1443 | }; | |
1444 | ||
1da177e4 LT |
1445 | static int __init hid_init(void) |
1446 | { | |
0361a28d ON |
1447 | int retval = -ENOMEM; |
1448 | ||
85cdaf52 JS |
1449 | retval = hid_register_driver(&hid_usb_driver); |
1450 | if (retval) | |
1451 | goto hid_register_fail; | |
876b9276 PW |
1452 | retval = usbhid_quirks_init(quirks_param); |
1453 | if (retval) | |
1454 | goto usbhid_quirks_init_fail; | |
1da177e4 LT |
1455 | retval = usb_register(&hid_driver); |
1456 | if (retval) | |
1457 | goto usb_register_fail; | |
ccabcd2d | 1458 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "\n"); |
1da177e4 LT |
1459 | |
1460 | return 0; | |
1461 | usb_register_fail: | |
876b9276 PW |
1462 | usbhid_quirks_exit(); |
1463 | usbhid_quirks_init_fail: | |
85cdaf52 JS |
1464 | hid_unregister_driver(&hid_usb_driver); |
1465 | hid_register_fail: | |
1da177e4 LT |
1466 | return retval; |
1467 | } | |
1468 | ||
1469 | static void __exit hid_exit(void) | |
1470 | { | |
1471 | usb_deregister(&hid_driver); | |
876b9276 | 1472 | usbhid_quirks_exit(); |
85cdaf52 | 1473 | hid_unregister_driver(&hid_usb_driver); |
1da177e4 LT |
1474 | } |
1475 | ||
1476 | module_init(hid_init); | |
1477 | module_exit(hid_exit); | |
1478 | ||
88adb72b JK |
1479 | MODULE_AUTHOR("Andreas Gal"); |
1480 | MODULE_AUTHOR("Vojtech Pavlik"); | |
1481 | MODULE_AUTHOR("Jiri Kosina"); | |
1da177e4 LT |
1482 | MODULE_DESCRIPTION(DRIVER_DESC); |
1483 | MODULE_LICENSE(DRIVER_LICENSE); |