Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * USB HID support for Linux | |
3 | * | |
4 | * Copyright (c) 1999 Andreas Gal | |
bf0964dc MH |
5 | * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz> |
6 | * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc | |
0361a28d | 7 | * Copyright (c) 2007-2008 Oliver Neukum |
7d39e849 | 8 | * Copyright (c) 2006-2010 Jiri Kosina |
1da177e4 LT |
9 | */ |
10 | ||
11 | /* | |
12 | * This program is free software; you can redistribute it and/or modify it | |
13 | * under the terms of the GNU General Public License as published by the Free | |
14 | * Software Foundation; either version 2 of the License, or (at your option) | |
15 | * any later version. | |
16 | */ | |
17 | ||
18 | #include <linux/module.h> | |
19 | #include <linux/slab.h> | |
20 | #include <linux/init.h> | |
21 | #include <linux/kernel.h> | |
1da177e4 LT |
22 | #include <linux/list.h> |
23 | #include <linux/mm.h> | |
3d5afd32 | 24 | #include <linux/mutex.h> |
1da177e4 LT |
25 | #include <linux/spinlock.h> |
26 | #include <asm/unaligned.h> | |
27 | #include <asm/byteorder.h> | |
28 | #include <linux/input.h> | |
29 | #include <linux/wait.h> | |
0361a28d | 30 | #include <linux/workqueue.h> |
1da177e4 | 31 | |
1da177e4 LT |
32 | #include <linux/usb.h> |
33 | ||
dde5845a | 34 | #include <linux/hid.h> |
1da177e4 | 35 | #include <linux/hiddev.h> |
c080d89a | 36 | #include <linux/hid-debug.h> |
86166b7b | 37 | #include <linux/hidraw.h> |
4916b3a5 | 38 | #include "usbhid.h" |
1da177e4 LT |
39 | |
40 | /* | |
41 | * Version Information | |
42 | */ | |
43 | ||
1da177e4 LT |
44 | #define DRIVER_DESC "USB HID core driver" |
45 | #define DRIVER_LICENSE "GPL" | |
46 | ||
1da177e4 LT |
47 | /* |
48 | * Module parameters. | |
49 | */ | |
50 | ||
51 | static unsigned int hid_mousepoll_interval; | |
52 | module_param_named(mousepoll, hid_mousepoll_interval, uint, 0644); | |
53 | MODULE_PARM_DESC(mousepoll, "Polling interval of mice"); | |
54 | ||
0361a28d ON |
55 | static unsigned int ignoreled; |
56 | module_param_named(ignoreled, ignoreled, uint, 0644); | |
57 | MODULE_PARM_DESC(ignoreled, "Autosuspend with active leds"); | |
58 | ||
876b9276 PW |
59 | /* Quirks specified at module load time */ |
60 | static char *quirks_param[MAX_USBHID_BOOT_QUIRKS] = { [ 0 ... (MAX_USBHID_BOOT_QUIRKS - 1) ] = NULL }; | |
61 | module_param_array_named(quirks, quirks_param, charp, NULL, 0444); | |
62 | MODULE_PARM_DESC(quirks, "Add/modify USB HID quirks by specifying " | |
63 | " quirks=vendorID:productID:quirks" | |
64 | " where vendorID, productID, and quirks are all in" | |
65 | " 0x-prefixed hex"); | |
1da177e4 | 66 | /* |
48b4554a | 67 | * Input submission and I/O error handler. |
1da177e4 | 68 | */ |
0361a28d ON |
69 | static DEFINE_MUTEX(hid_open_mut); |
70 | static struct workqueue_struct *resumption_waker; | |
1da177e4 | 71 | |
48b4554a | 72 | static void hid_io_error(struct hid_device *hid); |
0361a28d ON |
73 | static int hid_submit_out(struct hid_device *hid); |
74 | static int hid_submit_ctrl(struct hid_device *hid); | |
75 | static void hid_cancel_delayed_stuff(struct usbhid_device *usbhid); | |
48b4554a JK |
76 | |
77 | /* Start up the input URB */ | |
78 | static int hid_start_in(struct hid_device *hid) | |
1da177e4 | 79 | { |
1da177e4 | 80 | unsigned long flags; |
48b4554a JK |
81 | int rc = 0; |
82 | struct usbhid_device *usbhid = hid->driver_data; | |
1da177e4 | 83 | |
0361a28d ON |
84 | spin_lock_irqsave(&usbhid->lock, flags); |
85 | if (hid->open > 0 && | |
69626f23 | 86 | !test_bit(HID_DISCONNECTED, &usbhid->iofl) && |
0361a28d | 87 | !test_bit(HID_REPORTED_IDLE, &usbhid->iofl) && |
48b4554a JK |
88 | !test_and_set_bit(HID_IN_RUNNING, &usbhid->iofl)) { |
89 | rc = usb_submit_urb(usbhid->urbin, GFP_ATOMIC); | |
90 | if (rc != 0) | |
91 | clear_bit(HID_IN_RUNNING, &usbhid->iofl); | |
1da177e4 | 92 | } |
0361a28d | 93 | spin_unlock_irqrestore(&usbhid->lock, flags); |
48b4554a | 94 | return rc; |
1da177e4 LT |
95 | } |
96 | ||
48b4554a JK |
97 | /* I/O retry timer routine */ |
98 | static void hid_retry_timeout(unsigned long _hid) | |
1da177e4 | 99 | { |
48b4554a | 100 | struct hid_device *hid = (struct hid_device *) _hid; |
4916b3a5 | 101 | struct usbhid_device *usbhid = hid->driver_data; |
1da177e4 | 102 | |
48b4554a JK |
103 | dev_dbg(&usbhid->intf->dev, "retrying intr urb\n"); |
104 | if (hid_start_in(hid)) | |
105 | hid_io_error(hid); | |
1da177e4 LT |
106 | } |
107 | ||
48b4554a JK |
108 | /* Workqueue routine to reset the device or clear a halt */ |
109 | static void hid_reset(struct work_struct *work) | |
1da177e4 | 110 | { |
48b4554a JK |
111 | struct usbhid_device *usbhid = |
112 | container_of(work, struct usbhid_device, reset_work); | |
113 | struct hid_device *hid = usbhid->hid; | |
011b15df | 114 | int rc = 0; |
1da177e4 | 115 | |
48b4554a JK |
116 | if (test_bit(HID_CLEAR_HALT, &usbhid->iofl)) { |
117 | dev_dbg(&usbhid->intf->dev, "clear halt\n"); | |
118 | rc = usb_clear_halt(hid_to_usb_dev(hid), usbhid->urbin->pipe); | |
119 | clear_bit(HID_CLEAR_HALT, &usbhid->iofl); | |
120 | hid_start_in(hid); | |
121 | } | |
1da177e4 | 122 | |
48b4554a JK |
123 | else if (test_bit(HID_RESET_PENDING, &usbhid->iofl)) { |
124 | dev_dbg(&usbhid->intf->dev, "resetting device\n"); | |
011b15df AS |
125 | rc = usb_lock_device_for_reset(hid_to_usb_dev(hid), usbhid->intf); |
126 | if (rc == 0) { | |
742120c6 | 127 | rc = usb_reset_device(hid_to_usb_dev(hid)); |
011b15df | 128 | usb_unlock_device(hid_to_usb_dev(hid)); |
1da177e4 | 129 | } |
48b4554a | 130 | clear_bit(HID_RESET_PENDING, &usbhid->iofl); |
1da177e4 LT |
131 | } |
132 | ||
48b4554a JK |
133 | switch (rc) { |
134 | case 0: | |
135 | if (!test_bit(HID_IN_RUNNING, &usbhid->iofl)) | |
136 | hid_io_error(hid); | |
137 | break; | |
138 | default: | |
4291ee30 JP |
139 | hid_err(hid, "can't reset device, %s-%s/input%d, status %d\n", |
140 | hid_to_usb_dev(hid)->bus->bus_name, | |
141 | hid_to_usb_dev(hid)->devpath, | |
142 | usbhid->ifnum, rc); | |
48b4554a JK |
143 | /* FALLTHROUGH */ |
144 | case -EHOSTUNREACH: | |
145 | case -ENODEV: | |
146 | case -EINTR: | |
147 | break; | |
1da177e4 | 148 | } |
1da177e4 LT |
149 | } |
150 | ||
48b4554a JK |
151 | /* Main I/O error handler */ |
152 | static void hid_io_error(struct hid_device *hid) | |
dde5845a | 153 | { |
48b4554a JK |
154 | unsigned long flags; |
155 | struct usbhid_device *usbhid = hid->driver_data; | |
dde5845a | 156 | |
0361a28d | 157 | spin_lock_irqsave(&usbhid->lock, flags); |
dde5845a | 158 | |
48b4554a | 159 | /* Stop when disconnected */ |
69626f23 | 160 | if (test_bit(HID_DISCONNECTED, &usbhid->iofl)) |
48b4554a | 161 | goto done; |
dde5845a | 162 | |
5e2a55f2 AS |
163 | /* If it has been a while since the last error, we'll assume |
164 | * this a brand new error and reset the retry timeout. */ | |
165 | if (time_after(jiffies, usbhid->stop_retry + HZ/2)) | |
166 | usbhid->retry_delay = 0; | |
167 | ||
48b4554a JK |
168 | /* When an error occurs, retry at increasing intervals */ |
169 | if (usbhid->retry_delay == 0) { | |
170 | usbhid->retry_delay = 13; /* Then 26, 52, 104, 104, ... */ | |
171 | usbhid->stop_retry = jiffies + msecs_to_jiffies(1000); | |
172 | } else if (usbhid->retry_delay < 100) | |
173 | usbhid->retry_delay *= 2; | |
dde5845a | 174 | |
48b4554a | 175 | if (time_after(jiffies, usbhid->stop_retry)) { |
4916b3a5 | 176 | |
48b4554a JK |
177 | /* Retries failed, so do a port reset */ |
178 | if (!test_and_set_bit(HID_RESET_PENDING, &usbhid->iofl)) { | |
179 | schedule_work(&usbhid->reset_work); | |
180 | goto done; | |
181 | } | |
1da177e4 LT |
182 | } |
183 | ||
48b4554a JK |
184 | mod_timer(&usbhid->io_retry, |
185 | jiffies + msecs_to_jiffies(usbhid->retry_delay)); | |
186 | done: | |
0361a28d ON |
187 | spin_unlock_irqrestore(&usbhid->lock, flags); |
188 | } | |
189 | ||
190 | static void usbhid_mark_busy(struct usbhid_device *usbhid) | |
191 | { | |
192 | struct usb_interface *intf = usbhid->intf; | |
193 | ||
194 | usb_mark_last_busy(interface_to_usbdev(intf)); | |
195 | } | |
196 | ||
197 | static int usbhid_restart_out_queue(struct usbhid_device *usbhid) | |
198 | { | |
199 | struct hid_device *hid = usb_get_intfdata(usbhid->intf); | |
200 | int kicked; | |
201 | ||
202 | if (!hid) | |
203 | return 0; | |
204 | ||
205 | if ((kicked = (usbhid->outhead != usbhid->outtail))) { | |
206 | dbg("Kicking head %d tail %d", usbhid->outhead, usbhid->outtail); | |
207 | if (hid_submit_out(hid)) { | |
208 | clear_bit(HID_OUT_RUNNING, &usbhid->iofl); | |
209 | wake_up(&usbhid->wait); | |
210 | } | |
211 | } | |
212 | return kicked; | |
213 | } | |
214 | ||
215 | static int usbhid_restart_ctrl_queue(struct usbhid_device *usbhid) | |
216 | { | |
217 | struct hid_device *hid = usb_get_intfdata(usbhid->intf); | |
218 | int kicked; | |
219 | ||
220 | WARN_ON(hid == NULL); | |
221 | if (!hid) | |
222 | return 0; | |
223 | ||
224 | if ((kicked = (usbhid->ctrlhead != usbhid->ctrltail))) { | |
225 | dbg("Kicking head %d tail %d", usbhid->ctrlhead, usbhid->ctrltail); | |
226 | if (hid_submit_ctrl(hid)) { | |
227 | clear_bit(HID_CTRL_RUNNING, &usbhid->iofl); | |
228 | wake_up(&usbhid->wait); | |
229 | } | |
230 | } | |
231 | return kicked; | |
1da177e4 LT |
232 | } |
233 | ||
48b4554a JK |
234 | /* |
235 | * Input interrupt completion handler. | |
236 | */ | |
854561b0 | 237 | |
48b4554a | 238 | static void hid_irq_in(struct urb *urb) |
1da177e4 | 239 | { |
48b4554a JK |
240 | struct hid_device *hid = urb->context; |
241 | struct usbhid_device *usbhid = hid->driver_data; | |
242 | int status; | |
1da177e4 | 243 | |
48b4554a | 244 | switch (urb->status) { |
880d29f1 | 245 | case 0: /* success */ |
0361a28d | 246 | usbhid_mark_busy(usbhid); |
880d29f1 JS |
247 | usbhid->retry_delay = 0; |
248 | hid_input_report(urb->context, HID_INPUT_REPORT, | |
249 | urb->transfer_buffer, | |
250 | urb->actual_length, 1); | |
0361a28d ON |
251 | /* |
252 | * autosuspend refused while keys are pressed | |
253 | * because most keyboards don't wake up when | |
254 | * a key is released | |
255 | */ | |
256 | if (hid_check_keys_pressed(hid)) | |
257 | set_bit(HID_KEYS_PRESSED, &usbhid->iofl); | |
258 | else | |
259 | clear_bit(HID_KEYS_PRESSED, &usbhid->iofl); | |
880d29f1 JS |
260 | break; |
261 | case -EPIPE: /* stall */ | |
0361a28d | 262 | usbhid_mark_busy(usbhid); |
880d29f1 JS |
263 | clear_bit(HID_IN_RUNNING, &usbhid->iofl); |
264 | set_bit(HID_CLEAR_HALT, &usbhid->iofl); | |
265 | schedule_work(&usbhid->reset_work); | |
266 | return; | |
267 | case -ECONNRESET: /* unlink */ | |
268 | case -ENOENT: | |
269 | case -ESHUTDOWN: /* unplug */ | |
270 | clear_bit(HID_IN_RUNNING, &usbhid->iofl); | |
271 | return; | |
272 | case -EILSEQ: /* protocol error or unplug */ | |
273 | case -EPROTO: /* protocol error or unplug */ | |
274 | case -ETIME: /* protocol error or unplug */ | |
275 | case -ETIMEDOUT: /* Should never happen, but... */ | |
0361a28d | 276 | usbhid_mark_busy(usbhid); |
880d29f1 JS |
277 | clear_bit(HID_IN_RUNNING, &usbhid->iofl); |
278 | hid_io_error(hid); | |
279 | return; | |
280 | default: /* error */ | |
4291ee30 JP |
281 | hid_warn(urb->dev, "input irq status %d received\n", |
282 | urb->status); | |
48b4554a | 283 | } |
1da177e4 | 284 | |
48b4554a JK |
285 | status = usb_submit_urb(urb, GFP_ATOMIC); |
286 | if (status) { | |
287 | clear_bit(HID_IN_RUNNING, &usbhid->iofl); | |
288 | if (status != -EPERM) { | |
4291ee30 JP |
289 | hid_err(hid, "can't resubmit intr, %s-%s/input%d, status %d\n", |
290 | hid_to_usb_dev(hid)->bus->bus_name, | |
291 | hid_to_usb_dev(hid)->devpath, | |
292 | usbhid->ifnum, status); | |
48b4554a JK |
293 | hid_io_error(hid); |
294 | } | |
295 | } | |
1da177e4 LT |
296 | } |
297 | ||
48b4554a | 298 | static int hid_submit_out(struct hid_device *hid) |
1da177e4 | 299 | { |
48b4554a | 300 | struct hid_report *report; |
f129ea6d | 301 | char *raw_report; |
4916b3a5 JK |
302 | struct usbhid_device *usbhid = hid->driver_data; |
303 | ||
f129ea6d AH |
304 | report = usbhid->out[usbhid->outtail].report; |
305 | raw_report = usbhid->out[usbhid->outtail].raw_report; | |
1da177e4 | 306 | |
0361a28d ON |
307 | if (!test_bit(HID_REPORTED_IDLE, &usbhid->iofl)) { |
308 | usbhid->urbout->transfer_buffer_length = ((report->size - 1) >> 3) + 1 + (report->id > 0); | |
309 | usbhid->urbout->dev = hid_to_usb_dev(hid); | |
310 | memcpy(usbhid->outbuf, raw_report, usbhid->urbout->transfer_buffer_length); | |
311 | kfree(raw_report); | |
1d3e2023 | 312 | |
0361a28d | 313 | dbg_hid("submitting out urb\n"); |
d57cdcff | 314 | |
0361a28d | 315 | if (usb_submit_urb(usbhid->urbout, GFP_ATOMIC)) { |
4291ee30 | 316 | hid_err(hid, "usb_submit_urb(out) failed\n"); |
0361a28d ON |
317 | return -1; |
318 | } | |
858155fb | 319 | usbhid->last_out = jiffies; |
0361a28d ON |
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 | 377 | if (usb_submit_urb(usbhid->urbctrl, GFP_ATOMIC)) { |
4291ee30 | 378 | hid_err(hid, "usb_submit_urb(ctrl) failed\n"); |
0361a28d ON |
379 | return -1; |
380 | } | |
858155fb | 381 | usbhid->last_ctrl = jiffies; |
0361a28d ON |
382 | } else { |
383 | /* | |
384 | * queue work to wake up the device. | |
385 | * as the work queue is freezeable, this is safe | |
386 | * with respect to STD and STR | |
387 | */ | |
388 | queue_work(resumption_waker, &usbhid->restart_work); | |
48b4554a | 389 | } |
1da177e4 | 390 | |
48b4554a JK |
391 | return 0; |
392 | } | |
1da177e4 | 393 | |
48b4554a JK |
394 | /* |
395 | * Output interrupt completion handler. | |
396 | */ | |
1da177e4 | 397 | |
48b4554a JK |
398 | static void hid_irq_out(struct urb *urb) |
399 | { | |
400 | struct hid_device *hid = urb->context; | |
401 | struct usbhid_device *usbhid = hid->driver_data; | |
402 | unsigned long flags; | |
403 | int unplug = 0; | |
1da177e4 | 404 | |
48b4554a | 405 | switch (urb->status) { |
880d29f1 JS |
406 | case 0: /* success */ |
407 | break; | |
408 | case -ESHUTDOWN: /* unplug */ | |
409 | unplug = 1; | |
410 | case -EILSEQ: /* protocol error or unplug */ | |
411 | case -EPROTO: /* protocol error or unplug */ | |
412 | case -ECONNRESET: /* unlink */ | |
413 | case -ENOENT: | |
414 | break; | |
415 | default: /* error */ | |
4291ee30 JP |
416 | hid_warn(urb->dev, "output irq status %d received\n", |
417 | urb->status); | |
48b4554a | 418 | } |
1da177e4 | 419 | |
0361a28d | 420 | spin_lock_irqsave(&usbhid->lock, flags); |
1da177e4 | 421 | |
48b4554a JK |
422 | if (unplug) |
423 | usbhid->outtail = usbhid->outhead; | |
424 | else | |
425 | usbhid->outtail = (usbhid->outtail + 1) & (HID_OUTPUT_FIFO_SIZE - 1); | |
1da177e4 | 426 | |
48b4554a JK |
427 | if (usbhid->outhead != usbhid->outtail) { |
428 | if (hid_submit_out(hid)) { | |
429 | clear_bit(HID_OUT_RUNNING, &usbhid->iofl); | |
1d1bdd20 | 430 | wake_up(&usbhid->wait); |
48b4554a | 431 | } |
0361a28d | 432 | spin_unlock_irqrestore(&usbhid->lock, flags); |
48b4554a JK |
433 | return; |
434 | } | |
1da177e4 | 435 | |
48b4554a | 436 | clear_bit(HID_OUT_RUNNING, &usbhid->iofl); |
0361a28d | 437 | spin_unlock_irqrestore(&usbhid->lock, flags); |
1d1bdd20 | 438 | wake_up(&usbhid->wait); |
48b4554a | 439 | } |
6345fdfd | 440 | |
48b4554a JK |
441 | /* |
442 | * Control pipe completion handler. | |
443 | */ | |
1da177e4 | 444 | |
48b4554a JK |
445 | static void hid_ctrl(struct urb *urb) |
446 | { | |
447 | struct hid_device *hid = urb->context; | |
448 | struct usbhid_device *usbhid = hid->driver_data; | |
0361a28d | 449 | int unplug = 0, status = urb->status; |
1da177e4 | 450 | |
0361a28d | 451 | spin_lock(&usbhid->lock); |
1da177e4 | 452 | |
0361a28d | 453 | switch (status) { |
880d29f1 JS |
454 | case 0: /* success */ |
455 | if (usbhid->ctrl[usbhid->ctrltail].dir == USB_DIR_IN) | |
456 | hid_input_report(urb->context, | |
457 | usbhid->ctrl[usbhid->ctrltail].report->type, | |
458 | urb->transfer_buffer, urb->actual_length, 0); | |
459 | break; | |
460 | case -ESHUTDOWN: /* unplug */ | |
461 | unplug = 1; | |
462 | case -EILSEQ: /* protocol error or unplug */ | |
463 | case -EPROTO: /* protocol error or unplug */ | |
464 | case -ECONNRESET: /* unlink */ | |
465 | case -ENOENT: | |
466 | case -EPIPE: /* report not available */ | |
467 | break; | |
468 | default: /* error */ | |
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); |
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) { |
4291ee30 | 503 | hid_warn(hid, "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) { | |
4291ee30 | 509 | hid_warn(hid, "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 | |
858155fb | 516 | if (!test_and_set_bit(HID_OUT_RUNNING, &usbhid->iofl)) { |
48b4554a JK |
517 | if (hid_submit_out(hid)) |
518 | clear_bit(HID_OUT_RUNNING, &usbhid->iofl); | |
858155fb ON |
519 | } else { |
520 | /* | |
521 | * the queue is known to run | |
522 | * but an earlier request may be stuck | |
523 | * we may need to time out | |
524 | * no race because this is called under | |
525 | * spinlock | |
526 | */ | |
527 | if (time_after(jiffies, usbhid->last_out + HZ * 5)) | |
528 | usb_unlink_urb(usbhid->urbout); | |
529 | } | |
48b4554a JK |
530 | return; |
531 | } | |
1da177e4 | 532 | |
48b4554a | 533 | if ((head = (usbhid->ctrlhead + 1) & (HID_CONTROL_FIFO_SIZE - 1)) == usbhid->ctrltail) { |
4291ee30 | 534 | hid_warn(hid, "control queue full\n"); |
48b4554a JK |
535 | return; |
536 | } | |
8fd80133 | 537 | |
f129ea6d AH |
538 | if (dir == USB_DIR_OUT) { |
539 | usbhid->ctrl[usbhid->ctrlhead].raw_report = kmalloc(len, GFP_ATOMIC); | |
540 | if (!usbhid->ctrl[usbhid->ctrlhead].raw_report) { | |
4291ee30 | 541 | hid_warn(hid, "control queueing failed\n"); |
f129ea6d AH |
542 | return; |
543 | } | |
544 | hid_output_report(report, usbhid->ctrl[usbhid->ctrlhead].raw_report); | |
545 | } | |
48b4554a JK |
546 | usbhid->ctrl[usbhid->ctrlhead].report = report; |
547 | usbhid->ctrl[usbhid->ctrlhead].dir = dir; | |
548 | usbhid->ctrlhead = head; | |
8fd80133 | 549 | |
858155fb | 550 | if (!test_and_set_bit(HID_CTRL_RUNNING, &usbhid->iofl)) { |
48b4554a JK |
551 | if (hid_submit_ctrl(hid)) |
552 | clear_bit(HID_CTRL_RUNNING, &usbhid->iofl); | |
858155fb ON |
553 | } else { |
554 | /* | |
555 | * the queue is known to run | |
556 | * but an earlier request may be stuck | |
557 | * we may need to time out | |
558 | * no race because this is called under | |
559 | * spinlock | |
560 | */ | |
561 | if (time_after(jiffies, usbhid->last_ctrl + HZ * 5)) | |
562 | usb_unlink_urb(usbhid->urbctrl); | |
563 | } | |
0361a28d | 564 | } |
931e24b9 | 565 | |
0361a28d ON |
566 | void usbhid_submit_report(struct hid_device *hid, struct hid_report *report, unsigned char dir) |
567 | { | |
568 | struct usbhid_device *usbhid = hid->driver_data; | |
569 | unsigned long flags; | |
931e24b9 | 570 | |
0361a28d ON |
571 | spin_lock_irqsave(&usbhid->lock, flags); |
572 | __usbhid_submit_report(hid, report, dir); | |
573 | spin_unlock_irqrestore(&usbhid->lock, flags); | |
48b4554a | 574 | } |
606bd0a8 | 575 | EXPORT_SYMBOL_GPL(usbhid_submit_report); |
23b0d968 | 576 | |
48b4554a JK |
577 | static int usb_hidinput_input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) |
578 | { | |
e0712985 | 579 | struct hid_device *hid = input_get_drvdata(dev); |
0361a28d | 580 | struct usbhid_device *usbhid = hid->driver_data; |
48b4554a | 581 | struct hid_field *field; |
0361a28d | 582 | unsigned long flags; |
48b4554a | 583 | int offset; |
41ad5fba | 584 | |
48b4554a JK |
585 | if (type == EV_FF) |
586 | return input_ff_event(dev, type, code, value); | |
8d2bad87 | 587 | |
48b4554a JK |
588 | if (type != EV_LED) |
589 | return -1; | |
5556feae | 590 | |
48b4554a | 591 | if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) { |
4291ee30 | 592 | hid_warn(dev, "event field not found\n"); |
48b4554a JK |
593 | return -1; |
594 | } | |
4a1a4d8b | 595 | |
48b4554a | 596 | hid_set_field(field, offset, value); |
0361a28d ON |
597 | if (value) { |
598 | spin_lock_irqsave(&usbhid->lock, flags); | |
599 | usbhid->ledcount++; | |
600 | spin_unlock_irqrestore(&usbhid->lock, flags); | |
601 | } else { | |
602 | spin_lock_irqsave(&usbhid->lock, flags); | |
603 | usbhid->ledcount--; | |
604 | spin_unlock_irqrestore(&usbhid->lock, flags); | |
605 | } | |
48b4554a | 606 | usbhid_submit_report(hid, field->report, USB_DIR_OUT); |
1da177e4 | 607 | |
48b4554a JK |
608 | return 0; |
609 | } | |
1da177e4 | 610 | |
48b4554a JK |
611 | int usbhid_wait_io(struct hid_device *hid) |
612 | { | |
613 | struct usbhid_device *usbhid = hid->driver_data; | |
25914662 | 614 | |
1d1bdd20 JS |
615 | if (!wait_event_timeout(usbhid->wait, |
616 | (!test_bit(HID_CTRL_RUNNING, &usbhid->iofl) && | |
617 | !test_bit(HID_OUT_RUNNING, &usbhid->iofl)), | |
48b4554a | 618 | 10*HZ)) { |
58037eb9 | 619 | dbg_hid("timeout waiting for ctrl or out queue to clear\n"); |
48b4554a JK |
620 | return -1; |
621 | } | |
1da177e4 | 622 | |
48b4554a JK |
623 | return 0; |
624 | } | |
b8c21cf6 | 625 | EXPORT_SYMBOL_GPL(usbhid_wait_io); |
53880546 | 626 | |
48b4554a JK |
627 | static int hid_set_idle(struct usb_device *dev, int ifnum, int report, int idle) |
628 | { | |
629 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
630 | HID_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE, (idle << 8) | report, | |
631 | ifnum, NULL, 0, USB_CTRL_SET_TIMEOUT); | |
632 | } | |
1da177e4 | 633 | |
48b4554a JK |
634 | static int hid_get_class_descriptor(struct usb_device *dev, int ifnum, |
635 | unsigned char type, void *buf, int size) | |
636 | { | |
637 | int result, retries = 4; | |
1da177e4 | 638 | |
48b4554a | 639 | memset(buf, 0, size); |
1da177e4 | 640 | |
48b4554a JK |
641 | do { |
642 | result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), | |
643 | USB_REQ_GET_DESCRIPTOR, USB_RECIP_INTERFACE | USB_DIR_IN, | |
644 | (type << 8), ifnum, buf, size, USB_CTRL_GET_TIMEOUT); | |
645 | retries--; | |
646 | } while (result < size && retries); | |
647 | return result; | |
648 | } | |
940824b0 | 649 | |
48b4554a JK |
650 | int usbhid_open(struct hid_device *hid) |
651 | { | |
933e3187 ON |
652 | struct usbhid_device *usbhid = hid->driver_data; |
653 | int res; | |
654 | ||
0361a28d | 655 | mutex_lock(&hid_open_mut); |
933e3187 ON |
656 | if (!hid->open++) { |
657 | res = usb_autopm_get_interface(usbhid->intf); | |
0361a28d | 658 | /* the device must be awake to reliable request remote wakeup */ |
933e3187 ON |
659 | if (res < 0) { |
660 | hid->open--; | |
0361a28d | 661 | mutex_unlock(&hid_open_mut); |
933e3187 ON |
662 | return -EIO; |
663 | } | |
0361a28d ON |
664 | usbhid->intf->needs_remote_wakeup = 1; |
665 | if (hid_start_in(hid)) | |
666 | hid_io_error(hid); | |
667 | ||
668 | usb_autopm_put_interface(usbhid->intf); | |
933e3187 | 669 | } |
0361a28d | 670 | mutex_unlock(&hid_open_mut); |
48b4554a JK |
671 | return 0; |
672 | } | |
a417a21e | 673 | |
48b4554a JK |
674 | void usbhid_close(struct hid_device *hid) |
675 | { | |
676 | struct usbhid_device *usbhid = hid->driver_data; | |
eab9edd2 | 677 | |
0361a28d ON |
678 | mutex_lock(&hid_open_mut); |
679 | ||
680 | /* protecting hid->open to make sure we don't restart | |
681 | * data acquistion due to a resumption we no longer | |
682 | * care about | |
683 | */ | |
684 | spin_lock_irq(&usbhid->lock); | |
933e3187 | 685 | if (!--hid->open) { |
0361a28d | 686 | spin_unlock_irq(&usbhid->lock); |
89092ddd | 687 | hid_cancel_delayed_stuff(usbhid); |
48b4554a | 688 | usb_kill_urb(usbhid->urbin); |
0361a28d ON |
689 | usbhid->intf->needs_remote_wakeup = 0; |
690 | } else { | |
691 | spin_unlock_irq(&usbhid->lock); | |
933e3187 | 692 | } |
0361a28d | 693 | mutex_unlock(&hid_open_mut); |
48b4554a | 694 | } |
1d3e2023 | 695 | |
48b4554a JK |
696 | /* |
697 | * Initialize all reports | |
698 | */ | |
41ad5fba | 699 | |
48b4554a JK |
700 | void usbhid_init_reports(struct hid_device *hid) |
701 | { | |
702 | struct hid_report *report; | |
703 | struct usbhid_device *usbhid = hid->driver_data; | |
704 | int err, ret; | |
41ad5fba | 705 | |
48b4554a JK |
706 | list_for_each_entry(report, &hid->report_enum[HID_INPUT_REPORT].report_list, list) |
707 | usbhid_submit_report(hid, report, USB_DIR_IN); | |
5556feae | 708 | |
48b4554a JK |
709 | list_for_each_entry(report, &hid->report_enum[HID_FEATURE_REPORT].report_list, list) |
710 | usbhid_submit_report(hid, report, USB_DIR_IN); | |
4a1a4d8b | 711 | |
48b4554a JK |
712 | err = 0; |
713 | ret = usbhid_wait_io(hid); | |
714 | while (ret) { | |
715 | err |= ret; | |
716 | if (test_bit(HID_CTRL_RUNNING, &usbhid->iofl)) | |
717 | usb_kill_urb(usbhid->urbctrl); | |
718 | if (test_bit(HID_OUT_RUNNING, &usbhid->iofl)) | |
719 | usb_kill_urb(usbhid->urbout); | |
720 | ret = usbhid_wait_io(hid); | |
721 | } | |
3f9b4076 | 722 | |
48b4554a | 723 | if (err) |
4291ee30 | 724 | hid_warn(hid, "timeout initializing reports\n"); |
48b4554a | 725 | } |
1da177e4 | 726 | |
713c8aad PZ |
727 | /* |
728 | * Reset LEDs which BIOS might have left on. For now, just NumLock (0x01). | |
729 | */ | |
730 | static int hid_find_field_early(struct hid_device *hid, unsigned int page, | |
731 | unsigned int hid_code, struct hid_field **pfield) | |
732 | { | |
733 | struct hid_report *report; | |
734 | struct hid_field *field; | |
735 | struct hid_usage *usage; | |
736 | int i, j; | |
737 | ||
738 | list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) { | |
739 | for (i = 0; i < report->maxfield; i++) { | |
740 | field = report->field[i]; | |
741 | for (j = 0; j < field->maxusage; j++) { | |
742 | usage = &field->usage[j]; | |
743 | if ((usage->hid & HID_USAGE_PAGE) == page && | |
744 | (usage->hid & 0xFFFF) == hid_code) { | |
745 | *pfield = field; | |
746 | return j; | |
747 | } | |
748 | } | |
749 | } | |
750 | } | |
751 | return -1; | |
752 | } | |
753 | ||
6edfa8dc | 754 | void usbhid_set_leds(struct hid_device *hid) |
713c8aad PZ |
755 | { |
756 | struct hid_field *field; | |
757 | int offset; | |
758 | ||
759 | if ((offset = hid_find_field_early(hid, HID_UP_LED, 0x01, &field)) != -1) { | |
760 | hid_set_field(field, offset, 0); | |
761 | usbhid_submit_report(hid, field->report, USB_DIR_OUT); | |
762 | } | |
763 | } | |
6edfa8dc | 764 | EXPORT_SYMBOL_GPL(usbhid_set_leds); |
713c8aad | 765 | |
bf0964dc MH |
766 | /* |
767 | * Traverse the supplied list of reports and find the longest | |
768 | */ | |
282bfd4c JS |
769 | static void hid_find_max_report(struct hid_device *hid, unsigned int type, |
770 | unsigned int *max) | |
bf0964dc MH |
771 | { |
772 | struct hid_report *report; | |
282bfd4c | 773 | unsigned int size; |
bf0964dc MH |
774 | |
775 | list_for_each_entry(report, &hid->report_enum[type].report_list, list) { | |
efc7ce18 | 776 | size = ((report->size - 1) >> 3) + 1 + hid->report_enum[type].numbered; |
bf0964dc MH |
777 | if (*max < size) |
778 | *max = size; | |
779 | } | |
780 | } | |
781 | ||
1da177e4 LT |
782 | static int hid_alloc_buffers(struct usb_device *dev, struct hid_device *hid) |
783 | { | |
4916b3a5 JK |
784 | struct usbhid_device *usbhid = hid->driver_data; |
785 | ||
997ea58e | 786 | usbhid->inbuf = usb_alloc_coherent(dev, usbhid->bufsize, GFP_KERNEL, |
898089d0 | 787 | &usbhid->inbuf_dma); |
997ea58e | 788 | usbhid->outbuf = usb_alloc_coherent(dev, usbhid->bufsize, GFP_KERNEL, |
898089d0 | 789 | &usbhid->outbuf_dma); |
0ede76fc | 790 | usbhid->cr = kmalloc(sizeof(*usbhid->cr), GFP_KERNEL); |
997ea58e | 791 | usbhid->ctrlbuf = usb_alloc_coherent(dev, usbhid->bufsize, GFP_KERNEL, |
898089d0 JS |
792 | &usbhid->ctrlbuf_dma); |
793 | if (!usbhid->inbuf || !usbhid->outbuf || !usbhid->cr || | |
794 | !usbhid->ctrlbuf) | |
1da177e4 LT |
795 | return -1; |
796 | ||
797 | return 0; | |
798 | } | |
799 | ||
d4bfa033 JK |
800 | static int usbhid_output_raw_report(struct hid_device *hid, __u8 *buf, size_t count, |
801 | unsigned char report_type) | |
efc493f9 JK |
802 | { |
803 | struct usbhid_device *usbhid = hid->driver_data; | |
804 | struct usb_device *dev = hid_to_usb_dev(hid); | |
805 | struct usb_interface *intf = usbhid->intf; | |
806 | struct usb_host_interface *interface = intf->cur_altsetting; | |
807 | int ret; | |
808 | ||
fe2c91ee | 809 | if (usbhid->urbout && report_type != HID_FEATURE_REPORT) { |
a8ab5d58 AO |
810 | int actual_length; |
811 | int skipped_report_id = 0; | |
12e52725 | 812 | |
a8ab5d58 AO |
813 | if (buf[0] == 0x0) { |
814 | /* Don't send the Report ID */ | |
815 | buf++; | |
816 | count--; | |
817 | skipped_report_id = 1; | |
818 | } | |
819 | ret = usb_interrupt_msg(dev, usbhid->urbout->pipe, | |
820 | buf, count, &actual_length, | |
821 | USB_CTRL_SET_TIMEOUT); | |
822 | /* return the number of bytes transferred */ | |
823 | if (ret == 0) { | |
824 | ret = actual_length; | |
825 | /* count also the report id */ | |
826 | if (skipped_report_id) | |
827 | ret++; | |
828 | } | |
829 | } else { | |
29129a98 | 830 | int skipped_report_id = 0; |
c29771c2 | 831 | int report_id = buf[0]; |
29129a98 AO |
832 | if (buf[0] == 0x0) { |
833 | /* Don't send the Report ID */ | |
834 | buf++; | |
835 | count--; | |
836 | skipped_report_id = 1; | |
837 | } | |
a8ab5d58 AO |
838 | ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
839 | HID_REQ_SET_REPORT, | |
840 | USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE, | |
c29771c2 | 841 | ((report_type + 1) << 8) | report_id, |
29129a98 | 842 | interface->desc.bInterfaceNumber, buf, count, |
a8ab5d58 | 843 | USB_CTRL_SET_TIMEOUT); |
29129a98 AO |
844 | /* count also the report id, if this was a numbered report. */ |
845 | if (ret > 0 && skipped_report_id) | |
a8ab5d58 AO |
846 | ret++; |
847 | } | |
efc493f9 JK |
848 | |
849 | return ret; | |
850 | } | |
851 | ||
0361a28d ON |
852 | static void usbhid_restart_queues(struct usbhid_device *usbhid) |
853 | { | |
854 | if (usbhid->urbout) | |
855 | usbhid_restart_out_queue(usbhid); | |
856 | usbhid_restart_ctrl_queue(usbhid); | |
857 | } | |
858 | ||
859 | static void __usbhid_restart_queues(struct work_struct *work) | |
860 | { | |
861 | struct usbhid_device *usbhid = | |
862 | container_of(work, struct usbhid_device, restart_work); | |
863 | int r; | |
864 | ||
865 | r = usb_autopm_get_interface(usbhid->intf); | |
866 | if (r < 0) | |
867 | return; | |
868 | usb_autopm_put_interface(usbhid->intf); | |
869 | } | |
870 | ||
1da177e4 LT |
871 | static void hid_free_buffers(struct usb_device *dev, struct hid_device *hid) |
872 | { | |
4916b3a5 JK |
873 | struct usbhid_device *usbhid = hid->driver_data; |
874 | ||
997ea58e DM |
875 | usb_free_coherent(dev, usbhid->bufsize, usbhid->inbuf, usbhid->inbuf_dma); |
876 | usb_free_coherent(dev, usbhid->bufsize, usbhid->outbuf, usbhid->outbuf_dma); | |
0ede76fc | 877 | kfree(usbhid->cr); |
997ea58e | 878 | usb_free_coherent(dev, usbhid->bufsize, usbhid->ctrlbuf, usbhid->ctrlbuf_dma); |
1da177e4 LT |
879 | } |
880 | ||
c500c971 JS |
881 | static int usbhid_parse(struct hid_device *hid) |
882 | { | |
883 | struct usb_interface *intf = to_usb_interface(hid->dev.parent); | |
1da177e4 LT |
884 | struct usb_host_interface *interface = intf->cur_altsetting; |
885 | struct usb_device *dev = interface_to_usbdev (intf); | |
886 | struct hid_descriptor *hdesc; | |
2eb5dc30 | 887 | u32 quirks = 0; |
c500c971 | 888 | unsigned int rsize = 0; |
c5b7c7c3 | 889 | char *rdesc; |
c500c971 | 890 | int ret, n; |
1da177e4 | 891 | |
2eb5dc30 PW |
892 | quirks = usbhid_lookup_quirk(le16_to_cpu(dev->descriptor.idVendor), |
893 | le16_to_cpu(dev->descriptor.idProduct)); | |
1da177e4 | 894 | |
6f4303fb JK |
895 | if (quirks & HID_QUIRK_IGNORE) |
896 | return -ENODEV; | |
897 | ||
0f28b55d AS |
898 | /* Many keyboards and mice don't like to be polled for reports, |
899 | * so we will always set the HID_QUIRK_NOGET flag for them. */ | |
900 | if (interface->desc.bInterfaceSubClass == USB_INTERFACE_SUBCLASS_BOOT) { | |
901 | if (interface->desc.bInterfaceProtocol == USB_INTERFACE_PROTOCOL_KEYBOARD || | |
902 | interface->desc.bInterfaceProtocol == USB_INTERFACE_PROTOCOL_MOUSE) | |
903 | quirks |= HID_QUIRK_NOGET; | |
904 | } | |
905 | ||
c5b7c7c3 DT |
906 | if (usb_get_extra_descriptor(interface, HID_DT_HID, &hdesc) && |
907 | (!interface->desc.bNumEndpoints || | |
908 | usb_get_extra_descriptor(&interface->endpoint[0], HID_DT_HID, &hdesc))) { | |
58037eb9 | 909 | dbg_hid("class descriptor not present\n"); |
c500c971 | 910 | return -ENODEV; |
1da177e4 LT |
911 | } |
912 | ||
c500c971 JS |
913 | hid->version = le16_to_cpu(hdesc->bcdHID); |
914 | hid->country = hdesc->bCountryCode; | |
915 | ||
1da177e4 LT |
916 | for (n = 0; n < hdesc->bNumDescriptors; n++) |
917 | if (hdesc->desc[n].bDescriptorType == HID_DT_REPORT) | |
918 | rsize = le16_to_cpu(hdesc->desc[n].wDescriptorLength); | |
919 | ||
920 | if (!rsize || rsize > HID_MAX_DESCRIPTOR_SIZE) { | |
58037eb9 | 921 | dbg_hid("weird size of report descriptor (%u)\n", rsize); |
c500c971 | 922 | return -EINVAL; |
1da177e4 LT |
923 | } |
924 | ||
925 | if (!(rdesc = kmalloc(rsize, GFP_KERNEL))) { | |
58037eb9 | 926 | dbg_hid("couldn't allocate rdesc memory\n"); |
c500c971 | 927 | return -ENOMEM; |
1da177e4 LT |
928 | } |
929 | ||
854561b0 VP |
930 | hid_set_idle(dev, interface->desc.bInterfaceNumber, 0, 0); |
931 | ||
c500c971 JS |
932 | ret = hid_get_class_descriptor(dev, interface->desc.bInterfaceNumber, |
933 | HID_DT_REPORT, rdesc, rsize); | |
934 | if (ret < 0) { | |
58037eb9 | 935 | dbg_hid("reading report descriptor failed\n"); |
1da177e4 | 936 | kfree(rdesc); |
c500c971 | 937 | goto err; |
1da177e4 LT |
938 | } |
939 | ||
c500c971 JS |
940 | ret = hid_parse_report(hid, rdesc, rsize); |
941 | kfree(rdesc); | |
942 | if (ret) { | |
58037eb9 | 943 | dbg_hid("parsing report descriptor failed\n"); |
c500c971 | 944 | goto err; |
1da177e4 LT |
945 | } |
946 | ||
f5208997 | 947 | hid->quirks |= quirks; |
1da177e4 | 948 | |
c500c971 JS |
949 | return 0; |
950 | err: | |
951 | return ret; | |
952 | } | |
953 | ||
954 | static int usbhid_start(struct hid_device *hid) | |
955 | { | |
956 | struct usb_interface *intf = to_usb_interface(hid->dev.parent); | |
957 | struct usb_host_interface *interface = intf->cur_altsetting; | |
958 | struct usb_device *dev = interface_to_usbdev(intf); | |
3d5afd32 | 959 | struct usbhid_device *usbhid = hid->driver_data; |
c500c971 JS |
960 | unsigned int n, insize = 0; |
961 | int ret; | |
962 | ||
e3e14de5 JS |
963 | clear_bit(HID_DISCONNECTED, &usbhid->iofl); |
964 | ||
4916b3a5 JK |
965 | usbhid->bufsize = HID_MIN_BUFFER_SIZE; |
966 | hid_find_max_report(hid, HID_INPUT_REPORT, &usbhid->bufsize); | |
967 | hid_find_max_report(hid, HID_OUTPUT_REPORT, &usbhid->bufsize); | |
968 | hid_find_max_report(hid, HID_FEATURE_REPORT, &usbhid->bufsize); | |
bf0964dc | 969 | |
4916b3a5 JK |
970 | if (usbhid->bufsize > HID_MAX_BUFFER_SIZE) |
971 | usbhid->bufsize = HID_MAX_BUFFER_SIZE; | |
bf0964dc MH |
972 | |
973 | hid_find_max_report(hid, HID_INPUT_REPORT, &insize); | |
974 | ||
975 | if (insize > HID_MAX_BUFFER_SIZE) | |
976 | insize = HID_MAX_BUFFER_SIZE; | |
977 | ||
c500c971 JS |
978 | if (hid_alloc_buffers(dev, hid)) { |
979 | ret = -ENOMEM; | |
1da177e4 | 980 | goto fail; |
f345c37c PS |
981 | } |
982 | ||
1da177e4 | 983 | for (n = 0; n < interface->desc.bNumEndpoints; n++) { |
1da177e4 LT |
984 | struct usb_endpoint_descriptor *endpoint; |
985 | int pipe; | |
986 | int interval; | |
987 | ||
988 | endpoint = &interface->endpoint[n].desc; | |
581a2739 | 989 | if (!usb_endpoint_xfer_int(endpoint)) |
1da177e4 LT |
990 | continue; |
991 | ||
1da177e4 | 992 | interval = endpoint->bInterval; |
1da177e4 | 993 | |
f345c37c | 994 | /* Some vendors give fullspeed interval on highspeed devides */ |
c500c971 | 995 | if (hid->quirks & HID_QUIRK_FULLSPEED_INTERVAL && |
f345c37c PS |
996 | dev->speed == USB_SPEED_HIGH) { |
997 | interval = fls(endpoint->bInterval*8); | |
998 | printk(KERN_INFO "%s: Fixing fullspeed to highspeed interval: %d -> %d\n", | |
999 | hid->name, endpoint->bInterval, interval); | |
1000 | } | |
1001 | ||
1da177e4 LT |
1002 | /* Change the polling interval of mice. */ |
1003 | if (hid->collection->usage == HID_GD_MOUSE && hid_mousepoll_interval > 0) | |
1004 | interval = hid_mousepoll_interval; | |
05f091ab | 1005 | |
c500c971 | 1006 | ret = -ENOMEM; |
0f12aa03 | 1007 | if (usb_endpoint_dir_in(endpoint)) { |
4916b3a5 | 1008 | if (usbhid->urbin) |
1da177e4 | 1009 | continue; |
4916b3a5 | 1010 | if (!(usbhid->urbin = usb_alloc_urb(0, GFP_KERNEL))) |
1da177e4 LT |
1011 | goto fail; |
1012 | pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress); | |
4916b3a5 | 1013 | usb_fill_int_urb(usbhid->urbin, dev, pipe, usbhid->inbuf, insize, |
1da177e4 | 1014 | hid_irq_in, hid, interval); |
4916b3a5 JK |
1015 | usbhid->urbin->transfer_dma = usbhid->inbuf_dma; |
1016 | usbhid->urbin->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
1da177e4 | 1017 | } else { |
4916b3a5 | 1018 | if (usbhid->urbout) |
1da177e4 | 1019 | continue; |
4916b3a5 | 1020 | if (!(usbhid->urbout = usb_alloc_urb(0, GFP_KERNEL))) |
1da177e4 LT |
1021 | goto fail; |
1022 | pipe = usb_sndintpipe(dev, endpoint->bEndpointAddress); | |
4916b3a5 | 1023 | usb_fill_int_urb(usbhid->urbout, dev, pipe, usbhid->outbuf, 0, |
1da177e4 | 1024 | hid_irq_out, hid, interval); |
4916b3a5 JK |
1025 | usbhid->urbout->transfer_dma = usbhid->outbuf_dma; |
1026 | usbhid->urbout->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
1da177e4 LT |
1027 | } |
1028 | } | |
1029 | ||
4916b3a5 | 1030 | usbhid->urbctrl = usb_alloc_urb(0, GFP_KERNEL); |
c500c971 JS |
1031 | if (!usbhid->urbctrl) { |
1032 | ret = -ENOMEM; | |
1da177e4 | 1033 | goto fail; |
c500c971 | 1034 | } |
c5b7c7c3 | 1035 | |
4916b3a5 JK |
1036 | usb_fill_control_urb(usbhid->urbctrl, dev, 0, (void *) usbhid->cr, |
1037 | usbhid->ctrlbuf, 1, hid_ctrl, hid); | |
4916b3a5 | 1038 | usbhid->urbctrl->transfer_dma = usbhid->ctrlbuf_dma; |
0ede76fc | 1039 | usbhid->urbctrl->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
c500c971 | 1040 | |
5b915d9e JK |
1041 | if (!(hid->quirks & HID_QUIRK_NO_INIT_REPORTS)) |
1042 | usbhid_init_reports(hid); | |
93c10132 | 1043 | |
3d5afd32 | 1044 | set_bit(HID_STARTED, &usbhid->iofl); |
3d5afd32 | 1045 | |
08ef08ee AS |
1046 | /* Some keyboards don't work until their LEDs have been set. |
1047 | * Since BIOSes do set the LEDs, it must be safe for any device | |
1048 | * that supports the keyboard boot protocol. | |
3d61510f AS |
1049 | * In addition, enable remote wakeup by default for all keyboard |
1050 | * devices supporting the boot protocol. | |
08ef08ee AS |
1051 | */ |
1052 | if (interface->desc.bInterfaceSubClass == USB_INTERFACE_SUBCLASS_BOOT && | |
1053 | interface->desc.bInterfaceProtocol == | |
3d61510f | 1054 | USB_INTERFACE_PROTOCOL_KEYBOARD) { |
08ef08ee | 1055 | usbhid_set_leds(hid); |
3d61510f AS |
1056 | device_set_wakeup_enable(&dev->dev, 1); |
1057 | } | |
c500c971 | 1058 | return 0; |
1da177e4 LT |
1059 | |
1060 | fail: | |
4916b3a5 JK |
1061 | usb_free_urb(usbhid->urbin); |
1062 | usb_free_urb(usbhid->urbout); | |
1063 | usb_free_urb(usbhid->urbctrl); | |
e3e14de5 JS |
1064 | usbhid->urbin = NULL; |
1065 | usbhid->urbout = NULL; | |
1066 | usbhid->urbctrl = NULL; | |
22f675f3 | 1067 | hid_free_buffers(dev, hid); |
c500c971 | 1068 | return ret; |
1da177e4 LT |
1069 | } |
1070 | ||
c500c971 | 1071 | static void usbhid_stop(struct hid_device *hid) |
1da177e4 | 1072 | { |
c500c971 | 1073 | struct usbhid_device *usbhid = hid->driver_data; |
1da177e4 | 1074 | |
c500c971 | 1075 | if (WARN_ON(!usbhid)) |
1da177e4 LT |
1076 | return; |
1077 | ||
3d5afd32 | 1078 | clear_bit(HID_STARTED, &usbhid->iofl); |
0361a28d | 1079 | spin_lock_irq(&usbhid->lock); /* Sync with error handler */ |
69626f23 | 1080 | set_bit(HID_DISCONNECTED, &usbhid->iofl); |
0361a28d | 1081 | spin_unlock_irq(&usbhid->lock); |
4916b3a5 JK |
1082 | usb_kill_urb(usbhid->urbin); |
1083 | usb_kill_urb(usbhid->urbout); | |
1084 | usb_kill_urb(usbhid->urbctrl); | |
1da177e4 | 1085 | |
0361a28d | 1086 | hid_cancel_delayed_stuff(usbhid); |
aef4e266 | 1087 | |
c500c971 JS |
1088 | hid->claimed = 0; |
1089 | ||
4916b3a5 JK |
1090 | usb_free_urb(usbhid->urbin); |
1091 | usb_free_urb(usbhid->urbctrl); | |
1092 | usb_free_urb(usbhid->urbout); | |
e3e14de5 JS |
1093 | usbhid->urbin = NULL; /* don't mess up next start */ |
1094 | usbhid->urbctrl = NULL; | |
1095 | usbhid->urbout = NULL; | |
1da177e4 | 1096 | |
be820975 | 1097 | hid_free_buffers(hid_to_usb_dev(hid), hid); |
1da177e4 LT |
1098 | } |
1099 | ||
0361a28d ON |
1100 | static int usbhid_power(struct hid_device *hid, int lvl) |
1101 | { | |
1102 | int r = 0; | |
1103 | ||
1104 | switch (lvl) { | |
1105 | case PM_HINT_FULLON: | |
1106 | r = usbhid_get_power(hid); | |
1107 | break; | |
1108 | case PM_HINT_NORMAL: | |
1109 | usbhid_put_power(hid); | |
1110 | break; | |
1111 | } | |
1112 | return r; | |
1113 | } | |
1114 | ||
c500c971 JS |
1115 | static struct hid_ll_driver usb_hid_driver = { |
1116 | .parse = usbhid_parse, | |
1117 | .start = usbhid_start, | |
1118 | .stop = usbhid_stop, | |
1119 | .open = usbhid_open, | |
1120 | .close = usbhid_close, | |
0361a28d | 1121 | .power = usbhid_power, |
c500c971 JS |
1122 | .hidinput_input_event = usb_hidinput_input_event, |
1123 | }; | |
1124 | ||
c4c259bc | 1125 | static int usbhid_probe(struct usb_interface *intf, const struct usb_device_id *id) |
1da177e4 | 1126 | { |
131d3a7a | 1127 | struct usb_host_interface *interface = intf->cur_altsetting; |
c500c971 | 1128 | struct usb_device *dev = interface_to_usbdev(intf); |
3d5afd32 | 1129 | struct usbhid_device *usbhid; |
1da177e4 | 1130 | struct hid_device *hid; |
131d3a7a | 1131 | unsigned int n, has_in = 0; |
c500c971 JS |
1132 | size_t len; |
1133 | int ret; | |
1da177e4 | 1134 | |
58037eb9 | 1135 | dbg_hid("HID probe called for ifnum %d\n", |
1da177e4 LT |
1136 | intf->altsetting->desc.bInterfaceNumber); |
1137 | ||
131d3a7a JS |
1138 | for (n = 0; n < interface->desc.bNumEndpoints; n++) |
1139 | if (usb_endpoint_is_int_in(&interface->endpoint[n].desc)) | |
1140 | has_in++; | |
1141 | if (!has_in) { | |
4291ee30 | 1142 | hid_err(intf, "couldn't find an input interrupt endpoint\n"); |
131d3a7a JS |
1143 | return -ENODEV; |
1144 | } | |
1145 | ||
c500c971 JS |
1146 | hid = hid_allocate_device(); |
1147 | if (IS_ERR(hid)) | |
1148 | return PTR_ERR(hid); | |
1da177e4 LT |
1149 | |
1150 | usb_set_intfdata(intf, hid); | |
c500c971 JS |
1151 | hid->ll_driver = &usb_hid_driver; |
1152 | hid->hid_output_raw_report = usbhid_output_raw_report; | |
76483cf4 | 1153 | hid->ff_init = hid_pidff_init; |
c500c971 | 1154 | #ifdef CONFIG_USB_HIDDEV |
93c10132 | 1155 | hid->hiddev_connect = hiddev_connect; |
c4c259bc | 1156 | hid->hiddev_disconnect = hiddev_disconnect; |
c500c971 JS |
1157 | hid->hiddev_hid_event = hiddev_hid_event; |
1158 | hid->hiddev_report_event = hiddev_report_event; | |
1159 | #endif | |
1160 | hid->dev.parent = &intf->dev; | |
1161 | hid->bus = BUS_USB; | |
1162 | hid->vendor = le16_to_cpu(dev->descriptor.idVendor); | |
1163 | hid->product = le16_to_cpu(dev->descriptor.idProduct); | |
1164 | hid->name[0] = 0; | |
b5e5a37e | 1165 | hid->quirks = usbhid_lookup_quirk(hid->vendor, hid->product); |
a73a6370 JS |
1166 | if (intf->cur_altsetting->desc.bInterfaceProtocol == |
1167 | USB_INTERFACE_PROTOCOL_MOUSE) | |
1168 | hid->type = HID_TYPE_USBMOUSE; | |
1da177e4 | 1169 | |
c500c971 JS |
1170 | if (dev->manufacturer) |
1171 | strlcpy(hid->name, dev->manufacturer, sizeof(hid->name)); | |
1da177e4 | 1172 | |
c500c971 JS |
1173 | if (dev->product) { |
1174 | if (dev->manufacturer) | |
1175 | strlcat(hid->name, " ", sizeof(hid->name)); | |
1176 | strlcat(hid->name, dev->product, sizeof(hid->name)); | |
1da177e4 LT |
1177 | } |
1178 | ||
c500c971 JS |
1179 | if (!strlen(hid->name)) |
1180 | snprintf(hid->name, sizeof(hid->name), "HID %04x:%04x", | |
1181 | le16_to_cpu(dev->descriptor.idVendor), | |
1182 | le16_to_cpu(dev->descriptor.idProduct)); | |
1da177e4 | 1183 | |
c500c971 JS |
1184 | usb_make_path(dev, hid->phys, sizeof(hid->phys)); |
1185 | strlcat(hid->phys, "/input", sizeof(hid->phys)); | |
1186 | len = strlen(hid->phys); | |
1187 | if (len < sizeof(hid->phys) - 1) | |
1188 | snprintf(hid->phys + len, sizeof(hid->phys) - len, | |
1189 | "%d", intf->altsetting[0].desc.bInterfaceNumber); | |
1190 | ||
1191 | if (usb_string(dev, dev->descriptor.iSerialNumber, hid->uniq, 64) <= 0) | |
1192 | hid->uniq[0] = 0; | |
1da177e4 | 1193 | |
3d5afd32 JS |
1194 | usbhid = kzalloc(sizeof(*usbhid), GFP_KERNEL); |
1195 | if (usbhid == NULL) { | |
1196 | ret = -ENOMEM; | |
1197 | goto err; | |
1198 | } | |
1199 | ||
1200 | hid->driver_data = usbhid; | |
1201 | usbhid->hid = hid; | |
57ab12e4 JK |
1202 | usbhid->intf = intf; |
1203 | usbhid->ifnum = interface->desc.bInterfaceNumber; | |
3d5afd32 | 1204 | |
fde4e2f7 AS |
1205 | init_waitqueue_head(&usbhid->wait); |
1206 | INIT_WORK(&usbhid->reset_work, hid_reset); | |
1207 | INIT_WORK(&usbhid->restart_work, __usbhid_restart_queues); | |
1208 | setup_timer(&usbhid->io_retry, hid_retry_timeout, (unsigned long) hid); | |
1209 | spin_lock_init(&usbhid->lock); | |
1210 | ||
85cdaf52 JS |
1211 | ret = hid_add_device(hid); |
1212 | if (ret) { | |
d458a9df | 1213 | if (ret != -ENODEV) |
4291ee30 | 1214 | hid_err(intf, "can't add hid device: %d\n", ret); |
3d5afd32 | 1215 | goto err_free; |
85cdaf52 | 1216 | } |
c500c971 JS |
1217 | |
1218 | return 0; | |
3d5afd32 JS |
1219 | err_free: |
1220 | kfree(usbhid); | |
c500c971 JS |
1221 | err: |
1222 | hid_destroy_device(hid); | |
85cdaf52 | 1223 | return ret; |
1da177e4 LT |
1224 | } |
1225 | ||
c4c259bc | 1226 | static void usbhid_disconnect(struct usb_interface *intf) |
c500c971 JS |
1227 | { |
1228 | struct hid_device *hid = usb_get_intfdata(intf); | |
3d5afd32 | 1229 | struct usbhid_device *usbhid; |
c500c971 JS |
1230 | |
1231 | if (WARN_ON(!hid)) | |
1232 | return; | |
1233 | ||
3d5afd32 | 1234 | usbhid = hid->driver_data; |
c500c971 | 1235 | hid_destroy_device(hid); |
3d5afd32 | 1236 | kfree(usbhid); |
c500c971 JS |
1237 | } |
1238 | ||
0361a28d ON |
1239 | static void hid_cancel_delayed_stuff(struct usbhid_device *usbhid) |
1240 | { | |
1241 | del_timer_sync(&usbhid->io_retry); | |
1242 | cancel_work_sync(&usbhid->restart_work); | |
1243 | cancel_work_sync(&usbhid->reset_work); | |
1244 | } | |
1245 | ||
1246 | static void hid_cease_io(struct usbhid_device *usbhid) | |
1247 | { | |
1248 | del_timer(&usbhid->io_retry); | |
1249 | usb_kill_urb(usbhid->urbin); | |
1250 | usb_kill_urb(usbhid->urbctrl); | |
1251 | usb_kill_urb(usbhid->urbout); | |
0361a28d ON |
1252 | } |
1253 | ||
ae2f0074 JK |
1254 | /* Treat USB reset pretty much the same as suspend/resume */ |
1255 | static int hid_pre_reset(struct usb_interface *intf) | |
1256 | { | |
1257 | struct hid_device *hid = usb_get_intfdata(intf); | |
1258 | struct usbhid_device *usbhid = hid->driver_data; | |
1259 | ||
1260 | spin_lock_irq(&usbhid->lock); | |
1261 | set_bit(HID_RESET_PENDING, &usbhid->iofl); | |
1262 | spin_unlock_irq(&usbhid->lock); | |
6d779768 | 1263 | cancel_work_sync(&usbhid->restart_work); |
ae2f0074 JK |
1264 | hid_cease_io(usbhid); |
1265 | ||
1266 | return 0; | |
1267 | } | |
1268 | ||
1269 | /* Same routine used for post_reset and reset_resume */ | |
1270 | static int hid_post_reset(struct usb_interface *intf) | |
1271 | { | |
1272 | struct usb_device *dev = interface_to_usbdev (intf); | |
1273 | struct hid_device *hid = usb_get_intfdata(intf); | |
1274 | struct usbhid_device *usbhid = hid->driver_data; | |
1275 | int status; | |
70fa9f2e | 1276 | |
ae2f0074 JK |
1277 | spin_lock_irq(&usbhid->lock); |
1278 | clear_bit(HID_RESET_PENDING, &usbhid->iofl); | |
1279 | spin_unlock_irq(&usbhid->lock); | |
1280 | hid_set_idle(dev, intf->cur_altsetting->desc.bInterfaceNumber, 0, 0); | |
ae2f0074 JK |
1281 | status = hid_start_in(hid); |
1282 | if (status < 0) | |
1283 | hid_io_error(hid); | |
1284 | usbhid_restart_queues(usbhid); | |
1285 | ||
1286 | return 0; | |
1287 | } | |
1288 | ||
1289 | int usbhid_get_power(struct hid_device *hid) | |
1290 | { | |
1291 | struct usbhid_device *usbhid = hid->driver_data; | |
70fa9f2e | 1292 | |
ae2f0074 JK |
1293 | return usb_autopm_get_interface(usbhid->intf); |
1294 | } | |
1295 | ||
1296 | void usbhid_put_power(struct hid_device *hid) | |
1297 | { | |
1298 | struct usbhid_device *usbhid = hid->driver_data; | |
70fa9f2e | 1299 | |
ae2f0074 JK |
1300 | usb_autopm_put_interface(usbhid->intf); |
1301 | } | |
1302 | ||
1303 | ||
0f6f1407 | 1304 | #ifdef CONFIG_PM |
27d72e85 | 1305 | static int hid_suspend(struct usb_interface *intf, pm_message_t message) |
1da177e4 | 1306 | { |
0361a28d | 1307 | struct hid_device *hid = usb_get_intfdata(intf); |
4916b3a5 | 1308 | struct usbhid_device *usbhid = hid->driver_data; |
0361a28d | 1309 | int status; |
1da177e4 | 1310 | |
fb34d537 | 1311 | if (message.event & PM_EVENT_AUTO) { |
0361a28d ON |
1312 | spin_lock_irq(&usbhid->lock); /* Sync with error handler */ |
1313 | if (!test_bit(HID_RESET_PENDING, &usbhid->iofl) | |
1314 | && !test_bit(HID_CLEAR_HALT, &usbhid->iofl) | |
1315 | && !test_bit(HID_OUT_RUNNING, &usbhid->iofl) | |
1316 | && !test_bit(HID_CTRL_RUNNING, &usbhid->iofl) | |
1317 | && !test_bit(HID_KEYS_PRESSED, &usbhid->iofl) | |
1318 | && (!usbhid->ledcount || ignoreled)) | |
1319 | { | |
1320 | set_bit(HID_REPORTED_IDLE, &usbhid->iofl); | |
1321 | spin_unlock_irq(&usbhid->lock); | |
6a740aa4 BP |
1322 | if (hid->driver && hid->driver->suspend) { |
1323 | status = hid->driver->suspend(hid, message); | |
1324 | if (status < 0) | |
1325 | return status; | |
1326 | } | |
0361a28d ON |
1327 | } else { |
1328 | usbhid_mark_busy(usbhid); | |
1329 | spin_unlock_irq(&usbhid->lock); | |
1330 | return -EBUSY; | |
1331 | } | |
3d5afd32 | 1332 | |
0361a28d | 1333 | } else { |
6a740aa4 BP |
1334 | if (hid->driver && hid->driver->suspend) { |
1335 | status = hid->driver->suspend(hid, message); | |
1336 | if (status < 0) | |
1337 | return status; | |
1338 | } | |
0361a28d ON |
1339 | spin_lock_irq(&usbhid->lock); |
1340 | set_bit(HID_REPORTED_IDLE, &usbhid->iofl); | |
1341 | spin_unlock_irq(&usbhid->lock); | |
1342 | if (usbhid_wait_io(hid) < 0) | |
1343 | return -EIO; | |
1344 | } | |
1345 | ||
fb34d537 | 1346 | if (!ignoreled && (message.event & PM_EVENT_AUTO)) { |
0361a28d ON |
1347 | spin_lock_irq(&usbhid->lock); |
1348 | if (test_bit(HID_LED_ON, &usbhid->iofl)) { | |
1349 | spin_unlock_irq(&usbhid->lock); | |
1350 | usbhid_mark_busy(usbhid); | |
1351 | return -EBUSY; | |
1352 | } | |
1353 | spin_unlock_irq(&usbhid->lock); | |
1354 | } | |
1355 | ||
1356 | hid_cancel_delayed_stuff(usbhid); | |
1357 | hid_cease_io(usbhid); | |
1358 | ||
fb34d537 AS |
1359 | if ((message.event & PM_EVENT_AUTO) && |
1360 | test_bit(HID_KEYS_PRESSED, &usbhid->iofl)) { | |
0361a28d ON |
1361 | /* lost race against keypresses */ |
1362 | status = hid_start_in(hid); | |
1363 | if (status < 0) | |
1364 | hid_io_error(hid); | |
1365 | usbhid_mark_busy(usbhid); | |
1366 | return -EBUSY; | |
1367 | } | |
1da177e4 LT |
1368 | dev_dbg(&intf->dev, "suspend\n"); |
1369 | return 0; | |
1370 | } | |
1371 | ||
1372 | static int hid_resume(struct usb_interface *intf) | |
1373 | { | |
1374 | struct hid_device *hid = usb_get_intfdata (intf); | |
4916b3a5 | 1375 | struct usbhid_device *usbhid = hid->driver_data; |
1da177e4 LT |
1376 | int status; |
1377 | ||
fde5be35 | 1378 | if (!test_bit(HID_STARTED, &usbhid->iofl)) |
3d5afd32 | 1379 | return 0; |
3d5afd32 | 1380 | |
0361a28d ON |
1381 | clear_bit(HID_REPORTED_IDLE, &usbhid->iofl); |
1382 | usbhid_mark_busy(usbhid); | |
1383 | ||
1384 | if (test_bit(HID_CLEAR_HALT, &usbhid->iofl) || | |
1385 | test_bit(HID_RESET_PENDING, &usbhid->iofl)) | |
1386 | schedule_work(&usbhid->reset_work); | |
4916b3a5 | 1387 | usbhid->retry_delay = 0; |
aef4e266 | 1388 | status = hid_start_in(hid); |
0361a28d ON |
1389 | if (status < 0) |
1390 | hid_io_error(hid); | |
1391 | usbhid_restart_queues(usbhid); | |
1da177e4 | 1392 | |
6a740aa4 BP |
1393 | if (status >= 0 && hid->driver && hid->driver->resume) { |
1394 | int ret = hid->driver->resume(hid); | |
1395 | if (ret < 0) | |
1396 | status = ret; | |
1397 | } | |
1da177e4 | 1398 | dev_dbg(&intf->dev, "resume status %d\n", status); |
f07600cf | 1399 | return 0; |
df9a1f48 AS |
1400 | } |
1401 | ||
378a0ede | 1402 | static int hid_reset_resume(struct usb_interface *intf) |
df9a1f48 | 1403 | { |
378a0ede ON |
1404 | struct hid_device *hid = usb_get_intfdata(intf); |
1405 | struct usbhid_device *usbhid = hid->driver_data; | |
6a740aa4 | 1406 | int status; |
df9a1f48 | 1407 | |
378a0ede | 1408 | clear_bit(HID_REPORTED_IDLE, &usbhid->iofl); |
6a740aa4 BP |
1409 | status = hid_post_reset(intf); |
1410 | if (status >= 0 && hid->driver && hid->driver->reset_resume) { | |
1411 | int ret = hid->driver->reset_resume(hid); | |
1412 | if (ret < 0) | |
1413 | status = ret; | |
1414 | } | |
1415 | return status; | |
df9a1f48 AS |
1416 | } |
1417 | ||
ae2f0074 | 1418 | #endif /* CONFIG_PM */ |
df9a1f48 | 1419 | |
d67dec5b | 1420 | static const struct usb_device_id hid_usb_ids[] = { |
1da177e4 LT |
1421 | { .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS, |
1422 | .bInterfaceClass = USB_INTERFACE_CLASS_HID }, | |
1423 | { } /* Terminating entry */ | |
1424 | }; | |
1425 | ||
1426 | MODULE_DEVICE_TABLE (usb, hid_usb_ids); | |
1427 | ||
1428 | static struct usb_driver hid_driver = { | |
1da177e4 | 1429 | .name = "usbhid", |
c4c259bc JK |
1430 | .probe = usbhid_probe, |
1431 | .disconnect = usbhid_disconnect, | |
0f6f1407 | 1432 | #ifdef CONFIG_PM |
1da177e4 LT |
1433 | .suspend = hid_suspend, |
1434 | .resume = hid_resume, | |
378a0ede | 1435 | .reset_resume = hid_reset_resume, |
0f6f1407 | 1436 | #endif |
df9a1f48 AS |
1437 | .pre_reset = hid_pre_reset, |
1438 | .post_reset = hid_post_reset, | |
1da177e4 | 1439 | .id_table = hid_usb_ids, |
933e3187 | 1440 | .supports_autosuspend = 1, |
1da177e4 LT |
1441 | }; |
1442 | ||
85cdaf52 JS |
1443 | static const struct hid_device_id hid_usb_table[] = { |
1444 | { HID_USB_DEVICE(HID_ANY_ID, HID_ANY_ID) }, | |
1445 | { } | |
1446 | }; | |
1447 | ||
8fe294ca GC |
1448 | struct usb_interface *usbhid_find_interface(int minor) |
1449 | { | |
1450 | return usb_find_interface(&hid_driver, minor); | |
1451 | } | |
1452 | ||
85cdaf52 JS |
1453 | static struct hid_driver hid_usb_driver = { |
1454 | .name = "generic-usb", | |
1455 | .id_table = hid_usb_table, | |
1456 | }; | |
1457 | ||
1da177e4 LT |
1458 | static int __init hid_init(void) |
1459 | { | |
0361a28d ON |
1460 | int retval = -ENOMEM; |
1461 | ||
1462 | resumption_waker = create_freezeable_workqueue("usbhid_resumer"); | |
1463 | if (!resumption_waker) | |
1464 | goto no_queue; | |
85cdaf52 JS |
1465 | retval = hid_register_driver(&hid_usb_driver); |
1466 | if (retval) | |
1467 | goto hid_register_fail; | |
876b9276 PW |
1468 | retval = usbhid_quirks_init(quirks_param); |
1469 | if (retval) | |
1470 | goto usbhid_quirks_init_fail; | |
1da177e4 LT |
1471 | retval = usb_register(&hid_driver); |
1472 | if (retval) | |
1473 | goto usb_register_fail; | |
ccabcd2d | 1474 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "\n"); |
1da177e4 LT |
1475 | |
1476 | return 0; | |
1477 | usb_register_fail: | |
876b9276 PW |
1478 | usbhid_quirks_exit(); |
1479 | usbhid_quirks_init_fail: | |
85cdaf52 JS |
1480 | hid_unregister_driver(&hid_usb_driver); |
1481 | hid_register_fail: | |
0361a28d ON |
1482 | destroy_workqueue(resumption_waker); |
1483 | no_queue: | |
1da177e4 LT |
1484 | return retval; |
1485 | } | |
1486 | ||
1487 | static void __exit hid_exit(void) | |
1488 | { | |
1489 | usb_deregister(&hid_driver); | |
876b9276 | 1490 | usbhid_quirks_exit(); |
85cdaf52 | 1491 | hid_unregister_driver(&hid_usb_driver); |
0361a28d | 1492 | destroy_workqueue(resumption_waker); |
1da177e4 LT |
1493 | } |
1494 | ||
1495 | module_init(hid_init); | |
1496 | module_exit(hid_exit); | |
1497 | ||
88adb72b JK |
1498 | MODULE_AUTHOR("Andreas Gal"); |
1499 | MODULE_AUTHOR("Vojtech Pavlik"); | |
1500 | MODULE_AUTHOR("Jiri Kosina"); | |
1da177e4 LT |
1501 | MODULE_DESCRIPTION(DRIVER_DESC); |
1502 | MODULE_LICENSE(DRIVER_LICENSE); |