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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 | |
b55fd23c | 7 | * Copyright (c) 2006-2007 Jiri Kosina |
1da177e4 LT |
8 | */ |
9 | ||
10 | /* | |
11 | * This program is free software; you can redistribute it and/or modify it | |
12 | * under the terms of the GNU General Public License as published by the Free | |
13 | * Software Foundation; either version 2 of the License, or (at your option) | |
14 | * any later version. | |
15 | */ | |
16 | ||
17 | #include <linux/module.h> | |
18 | #include <linux/slab.h> | |
19 | #include <linux/init.h> | |
20 | #include <linux/kernel.h> | |
1da177e4 LT |
21 | #include <linux/list.h> |
22 | #include <linux/mm.h> | |
3d5afd32 | 23 | #include <linux/mutex.h> |
1da177e4 LT |
24 | #include <linux/smp_lock.h> |
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> | |
30 | ||
1da177e4 LT |
31 | #include <linux/usb.h> |
32 | ||
dde5845a | 33 | #include <linux/hid.h> |
1da177e4 | 34 | #include <linux/hiddev.h> |
c080d89a | 35 | #include <linux/hid-debug.h> |
86166b7b | 36 | #include <linux/hidraw.h> |
4916b3a5 | 37 | #include "usbhid.h" |
1da177e4 LT |
38 | |
39 | /* | |
40 | * Version Information | |
41 | */ | |
42 | ||
bf0964dc | 43 | #define DRIVER_VERSION "v2.6" |
f142b3a4 | 44 | #define DRIVER_AUTHOR "Andreas Gal, Vojtech Pavlik, Jiri Kosina" |
1da177e4 LT |
45 | #define DRIVER_DESC "USB HID core driver" |
46 | #define DRIVER_LICENSE "GPL" | |
47 | ||
1da177e4 LT |
48 | /* |
49 | * Module parameters. | |
50 | */ | |
51 | ||
52 | static unsigned int hid_mousepoll_interval; | |
53 | module_param_named(mousepoll, hid_mousepoll_interval, uint, 0644); | |
54 | MODULE_PARM_DESC(mousepoll, "Polling interval of mice"); | |
55 | ||
876b9276 PW |
56 | /* Quirks specified at module load time */ |
57 | static char *quirks_param[MAX_USBHID_BOOT_QUIRKS] = { [ 0 ... (MAX_USBHID_BOOT_QUIRKS - 1) ] = NULL }; | |
58 | module_param_array_named(quirks, quirks_param, charp, NULL, 0444); | |
59 | MODULE_PARM_DESC(quirks, "Add/modify USB HID quirks by specifying " | |
60 | " quirks=vendorID:productID:quirks" | |
61 | " where vendorID, productID, and quirks are all in" | |
62 | " 0x-prefixed hex"); | |
1da177e4 | 63 | /* |
48b4554a | 64 | * Input submission and I/O error handler. |
1da177e4 LT |
65 | */ |
66 | ||
48b4554a JK |
67 | static void hid_io_error(struct hid_device *hid); |
68 | ||
69 | /* Start up the input URB */ | |
70 | static int hid_start_in(struct hid_device *hid) | |
1da177e4 | 71 | { |
1da177e4 | 72 | unsigned long flags; |
48b4554a JK |
73 | int rc = 0; |
74 | struct usbhid_device *usbhid = hid->driver_data; | |
1da177e4 | 75 | |
48b4554a JK |
76 | spin_lock_irqsave(&usbhid->inlock, flags); |
77 | if (hid->open > 0 && !test_bit(HID_SUSPENDED, &usbhid->iofl) && | |
69626f23 | 78 | !test_bit(HID_DISCONNECTED, &usbhid->iofl) && |
48b4554a JK |
79 | !test_and_set_bit(HID_IN_RUNNING, &usbhid->iofl)) { |
80 | rc = usb_submit_urb(usbhid->urbin, GFP_ATOMIC); | |
81 | if (rc != 0) | |
82 | clear_bit(HID_IN_RUNNING, &usbhid->iofl); | |
1da177e4 | 83 | } |
48b4554a JK |
84 | spin_unlock_irqrestore(&usbhid->inlock, flags); |
85 | return rc; | |
1da177e4 LT |
86 | } |
87 | ||
48b4554a JK |
88 | /* I/O retry timer routine */ |
89 | static void hid_retry_timeout(unsigned long _hid) | |
1da177e4 | 90 | { |
48b4554a | 91 | struct hid_device *hid = (struct hid_device *) _hid; |
4916b3a5 | 92 | struct usbhid_device *usbhid = hid->driver_data; |
1da177e4 | 93 | |
48b4554a JK |
94 | dev_dbg(&usbhid->intf->dev, "retrying intr urb\n"); |
95 | if (hid_start_in(hid)) | |
96 | hid_io_error(hid); | |
1da177e4 LT |
97 | } |
98 | ||
48b4554a JK |
99 | /* Workqueue routine to reset the device or clear a halt */ |
100 | static void hid_reset(struct work_struct *work) | |
1da177e4 | 101 | { |
48b4554a JK |
102 | struct usbhid_device *usbhid = |
103 | container_of(work, struct usbhid_device, reset_work); | |
104 | struct hid_device *hid = usbhid->hid; | |
105 | int rc_lock, rc = 0; | |
1da177e4 | 106 | |
48b4554a JK |
107 | if (test_bit(HID_CLEAR_HALT, &usbhid->iofl)) { |
108 | dev_dbg(&usbhid->intf->dev, "clear halt\n"); | |
109 | rc = usb_clear_halt(hid_to_usb_dev(hid), usbhid->urbin->pipe); | |
110 | clear_bit(HID_CLEAR_HALT, &usbhid->iofl); | |
111 | hid_start_in(hid); | |
112 | } | |
1da177e4 | 113 | |
48b4554a JK |
114 | else if (test_bit(HID_RESET_PENDING, &usbhid->iofl)) { |
115 | dev_dbg(&usbhid->intf->dev, "resetting device\n"); | |
116 | rc = rc_lock = usb_lock_device_for_reset(hid_to_usb_dev(hid), usbhid->intf); | |
117 | if (rc_lock >= 0) { | |
742120c6 | 118 | rc = usb_reset_device(hid_to_usb_dev(hid)); |
48b4554a JK |
119 | if (rc_lock) |
120 | usb_unlock_device(hid_to_usb_dev(hid)); | |
1da177e4 | 121 | } |
48b4554a | 122 | clear_bit(HID_RESET_PENDING, &usbhid->iofl); |
1da177e4 LT |
123 | } |
124 | ||
48b4554a JK |
125 | switch (rc) { |
126 | case 0: | |
127 | if (!test_bit(HID_IN_RUNNING, &usbhid->iofl)) | |
128 | hid_io_error(hid); | |
129 | break; | |
130 | default: | |
58037eb9 | 131 | err_hid("can't reset device, %s-%s/input%d, status %d", |
48b4554a JK |
132 | hid_to_usb_dev(hid)->bus->bus_name, |
133 | hid_to_usb_dev(hid)->devpath, | |
134 | usbhid->ifnum, rc); | |
135 | /* FALLTHROUGH */ | |
136 | case -EHOSTUNREACH: | |
137 | case -ENODEV: | |
138 | case -EINTR: | |
139 | break; | |
1da177e4 | 140 | } |
1da177e4 LT |
141 | } |
142 | ||
48b4554a JK |
143 | /* Main I/O error handler */ |
144 | static void hid_io_error(struct hid_device *hid) | |
dde5845a | 145 | { |
48b4554a JK |
146 | unsigned long flags; |
147 | struct usbhid_device *usbhid = hid->driver_data; | |
dde5845a | 148 | |
48b4554a | 149 | spin_lock_irqsave(&usbhid->inlock, flags); |
dde5845a | 150 | |
48b4554a | 151 | /* Stop when disconnected */ |
69626f23 | 152 | if (test_bit(HID_DISCONNECTED, &usbhid->iofl)) |
48b4554a | 153 | goto done; |
dde5845a | 154 | |
5e2a55f2 AS |
155 | /* If it has been a while since the last error, we'll assume |
156 | * this a brand new error and reset the retry timeout. */ | |
157 | if (time_after(jiffies, usbhid->stop_retry + HZ/2)) | |
158 | usbhid->retry_delay = 0; | |
159 | ||
48b4554a JK |
160 | /* When an error occurs, retry at increasing intervals */ |
161 | if (usbhid->retry_delay == 0) { | |
162 | usbhid->retry_delay = 13; /* Then 26, 52, 104, 104, ... */ | |
163 | usbhid->stop_retry = jiffies + msecs_to_jiffies(1000); | |
164 | } else if (usbhid->retry_delay < 100) | |
165 | usbhid->retry_delay *= 2; | |
dde5845a | 166 | |
48b4554a | 167 | if (time_after(jiffies, usbhid->stop_retry)) { |
4916b3a5 | 168 | |
48b4554a JK |
169 | /* Retries failed, so do a port reset */ |
170 | if (!test_and_set_bit(HID_RESET_PENDING, &usbhid->iofl)) { | |
171 | schedule_work(&usbhid->reset_work); | |
172 | goto done; | |
173 | } | |
1da177e4 LT |
174 | } |
175 | ||
48b4554a JK |
176 | mod_timer(&usbhid->io_retry, |
177 | jiffies + msecs_to_jiffies(usbhid->retry_delay)); | |
178 | done: | |
179 | spin_unlock_irqrestore(&usbhid->inlock, flags); | |
1da177e4 LT |
180 | } |
181 | ||
48b4554a JK |
182 | /* |
183 | * Input interrupt completion handler. | |
184 | */ | |
854561b0 | 185 | |
48b4554a | 186 | static void hid_irq_in(struct urb *urb) |
1da177e4 | 187 | { |
48b4554a JK |
188 | struct hid_device *hid = urb->context; |
189 | struct usbhid_device *usbhid = hid->driver_data; | |
190 | int status; | |
1da177e4 | 191 | |
48b4554a | 192 | switch (urb->status) { |
880d29f1 JS |
193 | case 0: /* success */ |
194 | usbhid->retry_delay = 0; | |
195 | hid_input_report(urb->context, HID_INPUT_REPORT, | |
196 | urb->transfer_buffer, | |
197 | urb->actual_length, 1); | |
198 | break; | |
199 | case -EPIPE: /* stall */ | |
200 | clear_bit(HID_IN_RUNNING, &usbhid->iofl); | |
201 | set_bit(HID_CLEAR_HALT, &usbhid->iofl); | |
202 | schedule_work(&usbhid->reset_work); | |
203 | return; | |
204 | case -ECONNRESET: /* unlink */ | |
205 | case -ENOENT: | |
206 | case -ESHUTDOWN: /* unplug */ | |
207 | clear_bit(HID_IN_RUNNING, &usbhid->iofl); | |
208 | return; | |
209 | case -EILSEQ: /* protocol error or unplug */ | |
210 | case -EPROTO: /* protocol error or unplug */ | |
211 | case -ETIME: /* protocol error or unplug */ | |
212 | case -ETIMEDOUT: /* Should never happen, but... */ | |
213 | clear_bit(HID_IN_RUNNING, &usbhid->iofl); | |
214 | hid_io_error(hid); | |
215 | return; | |
216 | default: /* error */ | |
7d89fe12 GKH |
217 | dev_warn(&urb->dev->dev, "input irq status %d " |
218 | "received\n", urb->status); | |
48b4554a | 219 | } |
1da177e4 | 220 | |
48b4554a JK |
221 | status = usb_submit_urb(urb, GFP_ATOMIC); |
222 | if (status) { | |
223 | clear_bit(HID_IN_RUNNING, &usbhid->iofl); | |
224 | if (status != -EPERM) { | |
58037eb9 | 225 | err_hid("can't resubmit intr, %s-%s/input%d, status %d", |
48b4554a JK |
226 | hid_to_usb_dev(hid)->bus->bus_name, |
227 | hid_to_usb_dev(hid)->devpath, | |
228 | usbhid->ifnum, status); | |
229 | hid_io_error(hid); | |
230 | } | |
231 | } | |
1da177e4 LT |
232 | } |
233 | ||
48b4554a | 234 | static int hid_submit_out(struct hid_device *hid) |
1da177e4 | 235 | { |
48b4554a | 236 | struct hid_report *report; |
f129ea6d | 237 | char *raw_report; |
4916b3a5 JK |
238 | struct usbhid_device *usbhid = hid->driver_data; |
239 | ||
f129ea6d AH |
240 | report = usbhid->out[usbhid->outtail].report; |
241 | raw_report = usbhid->out[usbhid->outtail].raw_report; | |
1da177e4 | 242 | |
48b4554a JK |
243 | usbhid->urbout->transfer_buffer_length = ((report->size - 1) >> 3) + 1 + (report->id > 0); |
244 | usbhid->urbout->dev = hid_to_usb_dev(hid); | |
f129ea6d AH |
245 | memcpy(usbhid->outbuf, raw_report, usbhid->urbout->transfer_buffer_length); |
246 | kfree(raw_report); | |
1d3e2023 | 247 | |
58037eb9 | 248 | dbg_hid("submitting out urb\n"); |
d57cdcff | 249 | |
48b4554a | 250 | if (usb_submit_urb(usbhid->urbout, GFP_ATOMIC)) { |
58037eb9 | 251 | err_hid("usb_submit_urb(out) failed"); |
48b4554a JK |
252 | return -1; |
253 | } | |
1da177e4 | 254 | |
48b4554a JK |
255 | return 0; |
256 | } | |
257 | ||
258 | static int hid_submit_ctrl(struct hid_device *hid) | |
1da177e4 LT |
259 | { |
260 | struct hid_report *report; | |
48b4554a | 261 | unsigned char dir; |
f129ea6d | 262 | char *raw_report; |
48b4554a | 263 | int len; |
4916b3a5 | 264 | struct usbhid_device *usbhid = hid->driver_data; |
1da177e4 | 265 | |
48b4554a | 266 | report = usbhid->ctrl[usbhid->ctrltail].report; |
f129ea6d | 267 | raw_report = usbhid->ctrl[usbhid->ctrltail].raw_report; |
48b4554a | 268 | dir = usbhid->ctrl[usbhid->ctrltail].dir; |
1da177e4 | 269 | |
48b4554a JK |
270 | len = ((report->size - 1) >> 3) + 1 + (report->id > 0); |
271 | if (dir == USB_DIR_OUT) { | |
48b4554a JK |
272 | usbhid->urbctrl->pipe = usb_sndctrlpipe(hid_to_usb_dev(hid), 0); |
273 | usbhid->urbctrl->transfer_buffer_length = len; | |
f129ea6d AH |
274 | memcpy(usbhid->ctrlbuf, raw_report, len); |
275 | kfree(raw_report); | |
48b4554a JK |
276 | } else { |
277 | int maxpacket, padlen; | |
1da177e4 | 278 | |
48b4554a JK |
279 | usbhid->urbctrl->pipe = usb_rcvctrlpipe(hid_to_usb_dev(hid), 0); |
280 | maxpacket = usb_maxpacket(hid_to_usb_dev(hid), usbhid->urbctrl->pipe, 0); | |
281 | if (maxpacket > 0) { | |
92c4a1b9 | 282 | padlen = DIV_ROUND_UP(len, maxpacket); |
48b4554a JK |
283 | padlen *= maxpacket; |
284 | if (padlen > usbhid->bufsize) | |
285 | padlen = usbhid->bufsize; | |
286 | } else | |
287 | padlen = 0; | |
288 | usbhid->urbctrl->transfer_buffer_length = padlen; | |
1da177e4 | 289 | } |
48b4554a | 290 | usbhid->urbctrl->dev = hid_to_usb_dev(hid); |
1da177e4 | 291 | |
48b4554a JK |
292 | usbhid->cr->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE | dir; |
293 | usbhid->cr->bRequest = (dir == USB_DIR_OUT) ? HID_REQ_SET_REPORT : HID_REQ_GET_REPORT; | |
294 | usbhid->cr->wValue = cpu_to_le16(((report->type + 1) << 8) | report->id); | |
295 | usbhid->cr->wIndex = cpu_to_le16(usbhid->ifnum); | |
296 | usbhid->cr->wLength = cpu_to_le16(len); | |
1da177e4 | 297 | |
58037eb9 | 298 | dbg_hid("submitting ctrl urb: %s wValue=0x%04x wIndex=0x%04x wLength=%u\n", |
48b4554a JK |
299 | usbhid->cr->bRequest == HID_REQ_SET_REPORT ? "Set_Report" : "Get_Report", |
300 | usbhid->cr->wValue, usbhid->cr->wIndex, usbhid->cr->wLength); | |
1da177e4 | 301 | |
48b4554a | 302 | if (usb_submit_urb(usbhid->urbctrl, GFP_ATOMIC)) { |
58037eb9 | 303 | err_hid("usb_submit_urb(ctrl) failed"); |
48b4554a JK |
304 | return -1; |
305 | } | |
1da177e4 | 306 | |
48b4554a JK |
307 | return 0; |
308 | } | |
1da177e4 | 309 | |
48b4554a JK |
310 | /* |
311 | * Output interrupt completion handler. | |
312 | */ | |
1da177e4 | 313 | |
48b4554a JK |
314 | static void hid_irq_out(struct urb *urb) |
315 | { | |
316 | struct hid_device *hid = urb->context; | |
317 | struct usbhid_device *usbhid = hid->driver_data; | |
318 | unsigned long flags; | |
319 | int unplug = 0; | |
1da177e4 | 320 | |
48b4554a | 321 | switch (urb->status) { |
880d29f1 JS |
322 | case 0: /* success */ |
323 | break; | |
324 | case -ESHUTDOWN: /* unplug */ | |
325 | unplug = 1; | |
326 | case -EILSEQ: /* protocol error or unplug */ | |
327 | case -EPROTO: /* protocol error or unplug */ | |
328 | case -ECONNRESET: /* unlink */ | |
329 | case -ENOENT: | |
330 | break; | |
331 | default: /* error */ | |
7d89fe12 GKH |
332 | dev_warn(&urb->dev->dev, "output irq status %d " |
333 | "received\n", urb->status); | |
48b4554a | 334 | } |
1da177e4 | 335 | |
48b4554a | 336 | spin_lock_irqsave(&usbhid->outlock, flags); |
1da177e4 | 337 | |
48b4554a JK |
338 | if (unplug) |
339 | usbhid->outtail = usbhid->outhead; | |
340 | else | |
341 | usbhid->outtail = (usbhid->outtail + 1) & (HID_OUTPUT_FIFO_SIZE - 1); | |
1da177e4 | 342 | |
48b4554a JK |
343 | if (usbhid->outhead != usbhid->outtail) { |
344 | if (hid_submit_out(hid)) { | |
345 | clear_bit(HID_OUT_RUNNING, &usbhid->iofl); | |
1d1bdd20 | 346 | wake_up(&usbhid->wait); |
48b4554a JK |
347 | } |
348 | spin_unlock_irqrestore(&usbhid->outlock, flags); | |
349 | return; | |
350 | } | |
1da177e4 | 351 | |
48b4554a JK |
352 | clear_bit(HID_OUT_RUNNING, &usbhid->iofl); |
353 | spin_unlock_irqrestore(&usbhid->outlock, flags); | |
1d1bdd20 | 354 | wake_up(&usbhid->wait); |
48b4554a | 355 | } |
6345fdfd | 356 | |
48b4554a JK |
357 | /* |
358 | * Control pipe completion handler. | |
359 | */ | |
1da177e4 | 360 | |
48b4554a JK |
361 | static void hid_ctrl(struct urb *urb) |
362 | { | |
363 | struct hid_device *hid = urb->context; | |
364 | struct usbhid_device *usbhid = hid->driver_data; | |
365 | unsigned long flags; | |
366 | int unplug = 0; | |
1da177e4 | 367 | |
48b4554a | 368 | spin_lock_irqsave(&usbhid->ctrllock, flags); |
1da177e4 | 369 | |
48b4554a | 370 | switch (urb->status) { |
880d29f1 JS |
371 | case 0: /* success */ |
372 | if (usbhid->ctrl[usbhid->ctrltail].dir == USB_DIR_IN) | |
373 | hid_input_report(urb->context, | |
374 | usbhid->ctrl[usbhid->ctrltail].report->type, | |
375 | urb->transfer_buffer, urb->actual_length, 0); | |
376 | break; | |
377 | case -ESHUTDOWN: /* unplug */ | |
378 | unplug = 1; | |
379 | case -EILSEQ: /* protocol error or unplug */ | |
380 | case -EPROTO: /* protocol error or unplug */ | |
381 | case -ECONNRESET: /* unlink */ | |
382 | case -ENOENT: | |
383 | case -EPIPE: /* report not available */ | |
384 | break; | |
385 | default: /* error */ | |
7d89fe12 GKH |
386 | dev_warn(&urb->dev->dev, "ctrl urb status %d " |
387 | "received\n", urb->status); | |
48b4554a | 388 | } |
1da177e4 | 389 | |
48b4554a JK |
390 | if (unplug) |
391 | usbhid->ctrltail = usbhid->ctrlhead; | |
392 | else | |
393 | usbhid->ctrltail = (usbhid->ctrltail + 1) & (HID_CONTROL_FIFO_SIZE - 1); | |
1da177e4 | 394 | |
48b4554a JK |
395 | if (usbhid->ctrlhead != usbhid->ctrltail) { |
396 | if (hid_submit_ctrl(hid)) { | |
397 | clear_bit(HID_CTRL_RUNNING, &usbhid->iofl); | |
1d1bdd20 | 398 | wake_up(&usbhid->wait); |
48b4554a JK |
399 | } |
400 | spin_unlock_irqrestore(&usbhid->ctrllock, flags); | |
401 | return; | |
402 | } | |
1da177e4 | 403 | |
48b4554a JK |
404 | clear_bit(HID_CTRL_RUNNING, &usbhid->iofl); |
405 | spin_unlock_irqrestore(&usbhid->ctrllock, flags); | |
1d1bdd20 | 406 | wake_up(&usbhid->wait); |
48b4554a | 407 | } |
1da177e4 | 408 | |
48b4554a JK |
409 | void usbhid_submit_report(struct hid_device *hid, struct hid_report *report, unsigned char dir) |
410 | { | |
411 | int head; | |
412 | unsigned long flags; | |
413 | struct usbhid_device *usbhid = hid->driver_data; | |
f129ea6d | 414 | int len = ((report->size - 1) >> 3) + 1 + (report->id > 0); |
1da177e4 | 415 | |
48b4554a JK |
416 | if ((hid->quirks & HID_QUIRK_NOGET) && dir == USB_DIR_IN) |
417 | return; | |
b857c651 | 418 | |
48b4554a | 419 | if (usbhid->urbout && dir == USB_DIR_OUT && report->type == HID_OUTPUT_REPORT) { |
1da177e4 | 420 | |
48b4554a | 421 | spin_lock_irqsave(&usbhid->outlock, flags); |
1da177e4 | 422 | |
48b4554a JK |
423 | if ((head = (usbhid->outhead + 1) & (HID_OUTPUT_FIFO_SIZE - 1)) == usbhid->outtail) { |
424 | spin_unlock_irqrestore(&usbhid->outlock, flags); | |
7d89fe12 | 425 | dev_warn(&hid->dev, "output queue full\n"); |
48b4554a JK |
426 | return; |
427 | } | |
1da177e4 | 428 | |
f129ea6d AH |
429 | usbhid->out[usbhid->outhead].raw_report = kmalloc(len, GFP_ATOMIC); |
430 | if (!usbhid->out[usbhid->outhead].raw_report) { | |
431 | spin_unlock_irqrestore(&usbhid->outlock, flags); | |
46fcaec5 | 432 | dev_warn(&hid->dev, "output queueing failed\n"); |
f129ea6d AH |
433 | return; |
434 | } | |
435 | hid_output_report(report, usbhid->out[usbhid->outhead].raw_report); | |
436 | usbhid->out[usbhid->outhead].report = report; | |
48b4554a | 437 | usbhid->outhead = head; |
4871d3be | 438 | |
48b4554a JK |
439 | if (!test_and_set_bit(HID_OUT_RUNNING, &usbhid->iofl)) |
440 | if (hid_submit_out(hid)) | |
441 | clear_bit(HID_OUT_RUNNING, &usbhid->iofl); | |
8fd6db47 | 442 | |
48b4554a JK |
443 | spin_unlock_irqrestore(&usbhid->outlock, flags); |
444 | return; | |
445 | } | |
1da177e4 | 446 | |
48b4554a | 447 | spin_lock_irqsave(&usbhid->ctrllock, flags); |
940824b0 | 448 | |
48b4554a JK |
449 | if ((head = (usbhid->ctrlhead + 1) & (HID_CONTROL_FIFO_SIZE - 1)) == usbhid->ctrltail) { |
450 | spin_unlock_irqrestore(&usbhid->ctrllock, flags); | |
7d89fe12 | 451 | dev_warn(&hid->dev, "control queue full\n"); |
48b4554a JK |
452 | return; |
453 | } | |
8fd80133 | 454 | |
f129ea6d AH |
455 | if (dir == USB_DIR_OUT) { |
456 | usbhid->ctrl[usbhid->ctrlhead].raw_report = kmalloc(len, GFP_ATOMIC); | |
457 | if (!usbhid->ctrl[usbhid->ctrlhead].raw_report) { | |
458 | spin_unlock_irqrestore(&usbhid->ctrllock, flags); | |
46fcaec5 | 459 | dev_warn(&hid->dev, "control queueing failed\n"); |
f129ea6d AH |
460 | return; |
461 | } | |
462 | hid_output_report(report, usbhid->ctrl[usbhid->ctrlhead].raw_report); | |
463 | } | |
48b4554a JK |
464 | usbhid->ctrl[usbhid->ctrlhead].report = report; |
465 | usbhid->ctrl[usbhid->ctrlhead].dir = dir; | |
466 | usbhid->ctrlhead = head; | |
8fd80133 | 467 | |
48b4554a JK |
468 | if (!test_and_set_bit(HID_CTRL_RUNNING, &usbhid->iofl)) |
469 | if (hid_submit_ctrl(hid)) | |
470 | clear_bit(HID_CTRL_RUNNING, &usbhid->iofl); | |
931e24b9 | 471 | |
48b4554a JK |
472 | spin_unlock_irqrestore(&usbhid->ctrllock, flags); |
473 | } | |
606bd0a8 | 474 | EXPORT_SYMBOL_GPL(usbhid_submit_report); |
23b0d968 | 475 | |
48b4554a JK |
476 | static int usb_hidinput_input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) |
477 | { | |
e0712985 | 478 | struct hid_device *hid = input_get_drvdata(dev); |
48b4554a JK |
479 | struct hid_field *field; |
480 | int offset; | |
41ad5fba | 481 | |
48b4554a JK |
482 | if (type == EV_FF) |
483 | return input_ff_event(dev, type, code, value); | |
8d2bad87 | 484 | |
48b4554a JK |
485 | if (type != EV_LED) |
486 | return -1; | |
5556feae | 487 | |
48b4554a | 488 | if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) { |
7d89fe12 | 489 | dev_warn(&dev->dev, "event field not found\n"); |
48b4554a JK |
490 | return -1; |
491 | } | |
4a1a4d8b | 492 | |
48b4554a JK |
493 | hid_set_field(field, offset, value); |
494 | usbhid_submit_report(hid, field->report, USB_DIR_OUT); | |
1da177e4 | 495 | |
48b4554a JK |
496 | return 0; |
497 | } | |
1da177e4 | 498 | |
48b4554a JK |
499 | int usbhid_wait_io(struct hid_device *hid) |
500 | { | |
501 | struct usbhid_device *usbhid = hid->driver_data; | |
25914662 | 502 | |
1d1bdd20 JS |
503 | if (!wait_event_timeout(usbhid->wait, |
504 | (!test_bit(HID_CTRL_RUNNING, &usbhid->iofl) && | |
505 | !test_bit(HID_OUT_RUNNING, &usbhid->iofl)), | |
48b4554a | 506 | 10*HZ)) { |
58037eb9 | 507 | dbg_hid("timeout waiting for ctrl or out queue to clear\n"); |
48b4554a JK |
508 | return -1; |
509 | } | |
1da177e4 | 510 | |
48b4554a JK |
511 | return 0; |
512 | } | |
53880546 | 513 | |
48b4554a JK |
514 | static int hid_set_idle(struct usb_device *dev, int ifnum, int report, int idle) |
515 | { | |
516 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
517 | HID_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE, (idle << 8) | report, | |
518 | ifnum, NULL, 0, USB_CTRL_SET_TIMEOUT); | |
519 | } | |
1da177e4 | 520 | |
48b4554a JK |
521 | static int hid_get_class_descriptor(struct usb_device *dev, int ifnum, |
522 | unsigned char type, void *buf, int size) | |
523 | { | |
524 | int result, retries = 4; | |
1da177e4 | 525 | |
48b4554a | 526 | memset(buf, 0, size); |
1da177e4 | 527 | |
48b4554a JK |
528 | do { |
529 | result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), | |
530 | USB_REQ_GET_DESCRIPTOR, USB_RECIP_INTERFACE | USB_DIR_IN, | |
531 | (type << 8), ifnum, buf, size, USB_CTRL_GET_TIMEOUT); | |
532 | retries--; | |
533 | } while (result < size && retries); | |
534 | return result; | |
535 | } | |
940824b0 | 536 | |
48b4554a JK |
537 | int usbhid_open(struct hid_device *hid) |
538 | { | |
933e3187 ON |
539 | struct usbhid_device *usbhid = hid->driver_data; |
540 | int res; | |
541 | ||
542 | if (!hid->open++) { | |
543 | res = usb_autopm_get_interface(usbhid->intf); | |
544 | if (res < 0) { | |
545 | hid->open--; | |
546 | return -EIO; | |
547 | } | |
548 | } | |
48b4554a JK |
549 | if (hid_start_in(hid)) |
550 | hid_io_error(hid); | |
551 | return 0; | |
552 | } | |
a417a21e | 553 | |
48b4554a JK |
554 | void usbhid_close(struct hid_device *hid) |
555 | { | |
556 | struct usbhid_device *usbhid = hid->driver_data; | |
eab9edd2 | 557 | |
933e3187 | 558 | if (!--hid->open) { |
48b4554a | 559 | usb_kill_urb(usbhid->urbin); |
933e3187 ON |
560 | usb_autopm_put_interface(usbhid->intf); |
561 | } | |
48b4554a | 562 | } |
1d3e2023 | 563 | |
48b4554a JK |
564 | /* |
565 | * Initialize all reports | |
566 | */ | |
41ad5fba | 567 | |
48b4554a JK |
568 | void usbhid_init_reports(struct hid_device *hid) |
569 | { | |
570 | struct hid_report *report; | |
571 | struct usbhid_device *usbhid = hid->driver_data; | |
572 | int err, ret; | |
41ad5fba | 573 | |
48b4554a JK |
574 | list_for_each_entry(report, &hid->report_enum[HID_INPUT_REPORT].report_list, list) |
575 | usbhid_submit_report(hid, report, USB_DIR_IN); | |
5556feae | 576 | |
48b4554a JK |
577 | list_for_each_entry(report, &hid->report_enum[HID_FEATURE_REPORT].report_list, list) |
578 | usbhid_submit_report(hid, report, USB_DIR_IN); | |
4a1a4d8b | 579 | |
48b4554a JK |
580 | err = 0; |
581 | ret = usbhid_wait_io(hid); | |
582 | while (ret) { | |
583 | err |= ret; | |
584 | if (test_bit(HID_CTRL_RUNNING, &usbhid->iofl)) | |
585 | usb_kill_urb(usbhid->urbctrl); | |
586 | if (test_bit(HID_OUT_RUNNING, &usbhid->iofl)) | |
587 | usb_kill_urb(usbhid->urbout); | |
588 | ret = usbhid_wait_io(hid); | |
589 | } | |
3f9b4076 | 590 | |
48b4554a | 591 | if (err) |
7d89fe12 | 592 | dev_warn(&hid->dev, "timeout initializing reports\n"); |
48b4554a | 593 | } |
1da177e4 | 594 | |
713c8aad PZ |
595 | /* |
596 | * Reset LEDs which BIOS might have left on. For now, just NumLock (0x01). | |
597 | */ | |
598 | static int hid_find_field_early(struct hid_device *hid, unsigned int page, | |
599 | unsigned int hid_code, struct hid_field **pfield) | |
600 | { | |
601 | struct hid_report *report; | |
602 | struct hid_field *field; | |
603 | struct hid_usage *usage; | |
604 | int i, j; | |
605 | ||
606 | list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) { | |
607 | for (i = 0; i < report->maxfield; i++) { | |
608 | field = report->field[i]; | |
609 | for (j = 0; j < field->maxusage; j++) { | |
610 | usage = &field->usage[j]; | |
611 | if ((usage->hid & HID_USAGE_PAGE) == page && | |
612 | (usage->hid & 0xFFFF) == hid_code) { | |
613 | *pfield = field; | |
614 | return j; | |
615 | } | |
616 | } | |
617 | } | |
618 | } | |
619 | return -1; | |
620 | } | |
621 | ||
6edfa8dc | 622 | void usbhid_set_leds(struct hid_device *hid) |
713c8aad PZ |
623 | { |
624 | struct hid_field *field; | |
625 | int offset; | |
626 | ||
627 | if ((offset = hid_find_field_early(hid, HID_UP_LED, 0x01, &field)) != -1) { | |
628 | hid_set_field(field, offset, 0); | |
629 | usbhid_submit_report(hid, field->report, USB_DIR_OUT); | |
630 | } | |
631 | } | |
6edfa8dc | 632 | EXPORT_SYMBOL_GPL(usbhid_set_leds); |
713c8aad | 633 | |
bf0964dc MH |
634 | /* |
635 | * Traverse the supplied list of reports and find the longest | |
636 | */ | |
282bfd4c JS |
637 | static void hid_find_max_report(struct hid_device *hid, unsigned int type, |
638 | unsigned int *max) | |
bf0964dc MH |
639 | { |
640 | struct hid_report *report; | |
282bfd4c | 641 | unsigned int size; |
bf0964dc MH |
642 | |
643 | list_for_each_entry(report, &hid->report_enum[type].report_list, list) { | |
644 | size = ((report->size - 1) >> 3) + 1; | |
645 | if (type == HID_INPUT_REPORT && hid->report_enum[type].numbered) | |
646 | size++; | |
647 | if (*max < size) | |
648 | *max = size; | |
649 | } | |
650 | } | |
651 | ||
1da177e4 LT |
652 | static int hid_alloc_buffers(struct usb_device *dev, struct hid_device *hid) |
653 | { | |
4916b3a5 JK |
654 | struct usbhid_device *usbhid = hid->driver_data; |
655 | ||
656 | if (!(usbhid->inbuf = usb_buffer_alloc(dev, usbhid->bufsize, GFP_ATOMIC, &usbhid->inbuf_dma))) | |
1da177e4 | 657 | return -1; |
4916b3a5 | 658 | if (!(usbhid->outbuf = usb_buffer_alloc(dev, usbhid->bufsize, GFP_ATOMIC, &usbhid->outbuf_dma))) |
1da177e4 | 659 | return -1; |
4916b3a5 | 660 | if (!(usbhid->cr = usb_buffer_alloc(dev, sizeof(*(usbhid->cr)), GFP_ATOMIC, &usbhid->cr_dma))) |
1da177e4 | 661 | return -1; |
4916b3a5 | 662 | if (!(usbhid->ctrlbuf = usb_buffer_alloc(dev, usbhid->bufsize, GFP_ATOMIC, &usbhid->ctrlbuf_dma))) |
1da177e4 LT |
663 | return -1; |
664 | ||
665 | return 0; | |
666 | } | |
667 | ||
efc493f9 JK |
668 | static int usbhid_output_raw_report(struct hid_device *hid, __u8 *buf, size_t count) |
669 | { | |
670 | struct usbhid_device *usbhid = hid->driver_data; | |
671 | struct usb_device *dev = hid_to_usb_dev(hid); | |
672 | struct usb_interface *intf = usbhid->intf; | |
673 | struct usb_host_interface *interface = intf->cur_altsetting; | |
674 | int ret; | |
675 | ||
676 | ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
677 | HID_REQ_SET_REPORT, | |
678 | USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE, | |
01d7b369 | 679 | ((HID_OUTPUT_REPORT + 1) << 8) | *buf, |
efc493f9 JK |
680 | interface->desc.bInterfaceNumber, buf + 1, count - 1, |
681 | USB_CTRL_SET_TIMEOUT); | |
682 | ||
683 | /* count also the report id */ | |
684 | if (ret > 0) | |
685 | ret++; | |
686 | ||
687 | return ret; | |
688 | } | |
689 | ||
1da177e4 LT |
690 | static void hid_free_buffers(struct usb_device *dev, struct hid_device *hid) |
691 | { | |
4916b3a5 JK |
692 | struct usbhid_device *usbhid = hid->driver_data; |
693 | ||
6675c5bd DT |
694 | usb_buffer_free(dev, usbhid->bufsize, usbhid->inbuf, usbhid->inbuf_dma); |
695 | usb_buffer_free(dev, usbhid->bufsize, usbhid->outbuf, usbhid->outbuf_dma); | |
696 | usb_buffer_free(dev, sizeof(*(usbhid->cr)), usbhid->cr, usbhid->cr_dma); | |
697 | usb_buffer_free(dev, usbhid->bufsize, usbhid->ctrlbuf, usbhid->ctrlbuf_dma); | |
1da177e4 LT |
698 | } |
699 | ||
c500c971 JS |
700 | static int usbhid_parse(struct hid_device *hid) |
701 | { | |
702 | struct usb_interface *intf = to_usb_interface(hid->dev.parent); | |
1da177e4 LT |
703 | struct usb_host_interface *interface = intf->cur_altsetting; |
704 | struct usb_device *dev = interface_to_usbdev (intf); | |
705 | struct hid_descriptor *hdesc; | |
2eb5dc30 | 706 | u32 quirks = 0; |
c500c971 | 707 | unsigned int rsize = 0; |
c5b7c7c3 | 708 | char *rdesc; |
c500c971 | 709 | int ret, n; |
1da177e4 | 710 | |
2eb5dc30 PW |
711 | quirks = usbhid_lookup_quirk(le16_to_cpu(dev->descriptor.idVendor), |
712 | le16_to_cpu(dev->descriptor.idProduct)); | |
1da177e4 | 713 | |
0f28b55d AS |
714 | /* Many keyboards and mice don't like to be polled for reports, |
715 | * so we will always set the HID_QUIRK_NOGET flag for them. */ | |
716 | if (interface->desc.bInterfaceSubClass == USB_INTERFACE_SUBCLASS_BOOT) { | |
717 | if (interface->desc.bInterfaceProtocol == USB_INTERFACE_PROTOCOL_KEYBOARD || | |
718 | interface->desc.bInterfaceProtocol == USB_INTERFACE_PROTOCOL_MOUSE) | |
719 | quirks |= HID_QUIRK_NOGET; | |
720 | } | |
721 | ||
c5b7c7c3 DT |
722 | if (usb_get_extra_descriptor(interface, HID_DT_HID, &hdesc) && |
723 | (!interface->desc.bNumEndpoints || | |
724 | usb_get_extra_descriptor(&interface->endpoint[0], HID_DT_HID, &hdesc))) { | |
58037eb9 | 725 | dbg_hid("class descriptor not present\n"); |
c500c971 | 726 | return -ENODEV; |
1da177e4 LT |
727 | } |
728 | ||
c500c971 JS |
729 | hid->version = le16_to_cpu(hdesc->bcdHID); |
730 | hid->country = hdesc->bCountryCode; | |
731 | ||
1da177e4 LT |
732 | for (n = 0; n < hdesc->bNumDescriptors; n++) |
733 | if (hdesc->desc[n].bDescriptorType == HID_DT_REPORT) | |
734 | rsize = le16_to_cpu(hdesc->desc[n].wDescriptorLength); | |
735 | ||
736 | if (!rsize || rsize > HID_MAX_DESCRIPTOR_SIZE) { | |
58037eb9 | 737 | dbg_hid("weird size of report descriptor (%u)\n", rsize); |
c500c971 | 738 | return -EINVAL; |
1da177e4 LT |
739 | } |
740 | ||
741 | if (!(rdesc = kmalloc(rsize, GFP_KERNEL))) { | |
58037eb9 | 742 | dbg_hid("couldn't allocate rdesc memory\n"); |
c500c971 | 743 | return -ENOMEM; |
1da177e4 LT |
744 | } |
745 | ||
854561b0 VP |
746 | hid_set_idle(dev, interface->desc.bInterfaceNumber, 0, 0); |
747 | ||
c500c971 JS |
748 | ret = hid_get_class_descriptor(dev, interface->desc.bInterfaceNumber, |
749 | HID_DT_REPORT, rdesc, rsize); | |
750 | if (ret < 0) { | |
58037eb9 | 751 | dbg_hid("reading report descriptor failed\n"); |
1da177e4 | 752 | kfree(rdesc); |
c500c971 | 753 | goto err; |
1da177e4 LT |
754 | } |
755 | ||
58037eb9 | 756 | dbg_hid("report descriptor (size %u, read %d) = ", rsize, n); |
1da177e4 | 757 | for (n = 0; n < rsize; n++) |
58037eb9 JK |
758 | dbg_hid_line(" %02x", (unsigned char) rdesc[n]); |
759 | dbg_hid_line("\n"); | |
1da177e4 | 760 | |
c500c971 JS |
761 | ret = hid_parse_report(hid, rdesc, rsize); |
762 | kfree(rdesc); | |
763 | if (ret) { | |
58037eb9 | 764 | dbg_hid("parsing report descriptor failed\n"); |
c500c971 | 765 | goto err; |
1da177e4 LT |
766 | } |
767 | ||
1da177e4 LT |
768 | hid->quirks = quirks; |
769 | ||
c500c971 JS |
770 | return 0; |
771 | err: | |
772 | return ret; | |
773 | } | |
774 | ||
775 | static int usbhid_start(struct hid_device *hid) | |
776 | { | |
777 | struct usb_interface *intf = to_usb_interface(hid->dev.parent); | |
778 | struct usb_host_interface *interface = intf->cur_altsetting; | |
779 | struct usb_device *dev = interface_to_usbdev(intf); | |
3d5afd32 | 780 | struct usbhid_device *usbhid = hid->driver_data; |
c500c971 JS |
781 | unsigned int n, insize = 0; |
782 | int ret; | |
783 | ||
e3e14de5 JS |
784 | clear_bit(HID_DISCONNECTED, &usbhid->iofl); |
785 | ||
4916b3a5 JK |
786 | usbhid->bufsize = HID_MIN_BUFFER_SIZE; |
787 | hid_find_max_report(hid, HID_INPUT_REPORT, &usbhid->bufsize); | |
788 | hid_find_max_report(hid, HID_OUTPUT_REPORT, &usbhid->bufsize); | |
789 | hid_find_max_report(hid, HID_FEATURE_REPORT, &usbhid->bufsize); | |
bf0964dc | 790 | |
4916b3a5 JK |
791 | if (usbhid->bufsize > HID_MAX_BUFFER_SIZE) |
792 | usbhid->bufsize = HID_MAX_BUFFER_SIZE; | |
bf0964dc MH |
793 | |
794 | hid_find_max_report(hid, HID_INPUT_REPORT, &insize); | |
795 | ||
796 | if (insize > HID_MAX_BUFFER_SIZE) | |
797 | insize = HID_MAX_BUFFER_SIZE; | |
798 | ||
3d5afd32 | 799 | mutex_lock(&usbhid->setup); |
c500c971 JS |
800 | if (hid_alloc_buffers(dev, hid)) { |
801 | ret = -ENOMEM; | |
1da177e4 | 802 | goto fail; |
f345c37c PS |
803 | } |
804 | ||
1da177e4 | 805 | for (n = 0; n < interface->desc.bNumEndpoints; n++) { |
1da177e4 LT |
806 | struct usb_endpoint_descriptor *endpoint; |
807 | int pipe; | |
808 | int interval; | |
809 | ||
810 | endpoint = &interface->endpoint[n].desc; | |
811 | if ((endpoint->bmAttributes & 3) != 3) /* Not an interrupt endpoint */ | |
812 | continue; | |
813 | ||
1da177e4 | 814 | interval = endpoint->bInterval; |
1da177e4 | 815 | |
f345c37c | 816 | /* Some vendors give fullspeed interval on highspeed devides */ |
c500c971 | 817 | if (hid->quirks & HID_QUIRK_FULLSPEED_INTERVAL && |
f345c37c PS |
818 | dev->speed == USB_SPEED_HIGH) { |
819 | interval = fls(endpoint->bInterval*8); | |
820 | printk(KERN_INFO "%s: Fixing fullspeed to highspeed interval: %d -> %d\n", | |
821 | hid->name, endpoint->bInterval, interval); | |
822 | } | |
823 | ||
1da177e4 LT |
824 | /* Change the polling interval of mice. */ |
825 | if (hid->collection->usage == HID_GD_MOUSE && hid_mousepoll_interval > 0) | |
826 | interval = hid_mousepoll_interval; | |
05f091ab | 827 | |
c500c971 | 828 | ret = -ENOMEM; |
0f12aa03 | 829 | if (usb_endpoint_dir_in(endpoint)) { |
4916b3a5 | 830 | if (usbhid->urbin) |
1da177e4 | 831 | continue; |
4916b3a5 | 832 | if (!(usbhid->urbin = usb_alloc_urb(0, GFP_KERNEL))) |
1da177e4 LT |
833 | goto fail; |
834 | pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress); | |
4916b3a5 | 835 | usb_fill_int_urb(usbhid->urbin, dev, pipe, usbhid->inbuf, insize, |
1da177e4 | 836 | hid_irq_in, hid, interval); |
4916b3a5 JK |
837 | usbhid->urbin->transfer_dma = usbhid->inbuf_dma; |
838 | usbhid->urbin->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
1da177e4 | 839 | } else { |
4916b3a5 | 840 | if (usbhid->urbout) |
1da177e4 | 841 | continue; |
4916b3a5 | 842 | if (!(usbhid->urbout = usb_alloc_urb(0, GFP_KERNEL))) |
1da177e4 LT |
843 | goto fail; |
844 | pipe = usb_sndintpipe(dev, endpoint->bEndpointAddress); | |
4916b3a5 | 845 | usb_fill_int_urb(usbhid->urbout, dev, pipe, usbhid->outbuf, 0, |
1da177e4 | 846 | hid_irq_out, hid, interval); |
4916b3a5 JK |
847 | usbhid->urbout->transfer_dma = usbhid->outbuf_dma; |
848 | usbhid->urbout->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
1da177e4 LT |
849 | } |
850 | } | |
851 | ||
1d1bdd20 | 852 | init_waitqueue_head(&usbhid->wait); |
4916b3a5 JK |
853 | INIT_WORK(&usbhid->reset_work, hid_reset); |
854 | setup_timer(&usbhid->io_retry, hid_retry_timeout, (unsigned long) hid); | |
aef4e266 | 855 | |
4916b3a5 JK |
856 | spin_lock_init(&usbhid->inlock); |
857 | spin_lock_init(&usbhid->outlock); | |
858 | spin_lock_init(&usbhid->ctrllock); | |
1da177e4 | 859 | |
4916b3a5 JK |
860 | usbhid->intf = intf; |
861 | usbhid->ifnum = interface->desc.bInterfaceNumber; | |
1da177e4 | 862 | |
4916b3a5 | 863 | usbhid->urbctrl = usb_alloc_urb(0, GFP_KERNEL); |
c500c971 JS |
864 | if (!usbhid->urbctrl) { |
865 | ret = -ENOMEM; | |
1da177e4 | 866 | goto fail; |
c500c971 | 867 | } |
c5b7c7c3 | 868 | |
4916b3a5 JK |
869 | usb_fill_control_urb(usbhid->urbctrl, dev, 0, (void *) usbhid->cr, |
870 | usbhid->ctrlbuf, 1, hid_ctrl, hid); | |
871 | usbhid->urbctrl->setup_dma = usbhid->cr_dma; | |
872 | usbhid->urbctrl->transfer_dma = usbhid->ctrlbuf_dma; | |
873 | usbhid->urbctrl->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP | URB_NO_SETUP_DMA_MAP); | |
c500c971 | 874 | |
93c10132 JS |
875 | usbhid_init_reports(hid); |
876 | hid_dump_device(hid); | |
877 | ||
3d5afd32 JS |
878 | set_bit(HID_STARTED, &usbhid->iofl); |
879 | mutex_unlock(&usbhid->setup); | |
880 | ||
c500c971 | 881 | return 0; |
1da177e4 LT |
882 | |
883 | fail: | |
4916b3a5 JK |
884 | usb_free_urb(usbhid->urbin); |
885 | usb_free_urb(usbhid->urbout); | |
886 | usb_free_urb(usbhid->urbctrl); | |
e3e14de5 JS |
887 | usbhid->urbin = NULL; |
888 | usbhid->urbout = NULL; | |
889 | usbhid->urbctrl = NULL; | |
22f675f3 | 890 | hid_free_buffers(dev, hid); |
3d5afd32 | 891 | mutex_unlock(&usbhid->setup); |
c500c971 | 892 | return ret; |
1da177e4 LT |
893 | } |
894 | ||
c500c971 | 895 | static void usbhid_stop(struct hid_device *hid) |
1da177e4 | 896 | { |
c500c971 | 897 | struct usbhid_device *usbhid = hid->driver_data; |
1da177e4 | 898 | |
c500c971 | 899 | if (WARN_ON(!usbhid)) |
1da177e4 LT |
900 | return; |
901 | ||
3d5afd32 JS |
902 | mutex_lock(&usbhid->setup); |
903 | clear_bit(HID_STARTED, &usbhid->iofl); | |
4916b3a5 | 904 | spin_lock_irq(&usbhid->inlock); /* Sync with error handler */ |
69626f23 | 905 | set_bit(HID_DISCONNECTED, &usbhid->iofl); |
4916b3a5 JK |
906 | spin_unlock_irq(&usbhid->inlock); |
907 | usb_kill_urb(usbhid->urbin); | |
908 | usb_kill_urb(usbhid->urbout); | |
909 | usb_kill_urb(usbhid->urbctrl); | |
1da177e4 | 910 | |
4916b3a5 | 911 | del_timer_sync(&usbhid->io_retry); |
2fa45a4c | 912 | cancel_work_sync(&usbhid->reset_work); |
aef4e266 | 913 | |
1da177e4 LT |
914 | if (hid->claimed & HID_CLAIMED_INPUT) |
915 | hidinput_disconnect(hid); | |
916 | if (hid->claimed & HID_CLAIMED_HIDDEV) | |
917 | hiddev_disconnect(hid); | |
86166b7b JK |
918 | if (hid->claimed & HID_CLAIMED_HIDRAW) |
919 | hidraw_disconnect(hid); | |
1da177e4 | 920 | |
c500c971 JS |
921 | hid->claimed = 0; |
922 | ||
4916b3a5 JK |
923 | usb_free_urb(usbhid->urbin); |
924 | usb_free_urb(usbhid->urbctrl); | |
925 | usb_free_urb(usbhid->urbout); | |
e3e14de5 JS |
926 | usbhid->urbin = NULL; /* don't mess up next start */ |
927 | usbhid->urbctrl = NULL; | |
928 | usbhid->urbout = NULL; | |
1da177e4 | 929 | |
be820975 | 930 | hid_free_buffers(hid_to_usb_dev(hid), hid); |
3d5afd32 | 931 | mutex_unlock(&usbhid->setup); |
1da177e4 LT |
932 | } |
933 | ||
c500c971 JS |
934 | static struct hid_ll_driver usb_hid_driver = { |
935 | .parse = usbhid_parse, | |
936 | .start = usbhid_start, | |
937 | .stop = usbhid_stop, | |
938 | .open = usbhid_open, | |
939 | .close = usbhid_close, | |
940 | .hidinput_input_event = usb_hidinput_input_event, | |
941 | }; | |
942 | ||
1da177e4 LT |
943 | static int hid_probe(struct usb_interface *intf, const struct usb_device_id *id) |
944 | { | |
131d3a7a | 945 | struct usb_host_interface *interface = intf->cur_altsetting; |
c500c971 | 946 | struct usb_device *dev = interface_to_usbdev(intf); |
3d5afd32 | 947 | struct usbhid_device *usbhid; |
1da177e4 | 948 | struct hid_device *hid; |
131d3a7a | 949 | unsigned int n, has_in = 0; |
c500c971 JS |
950 | size_t len; |
951 | int ret; | |
1da177e4 | 952 | |
58037eb9 | 953 | dbg_hid("HID probe called for ifnum %d\n", |
1da177e4 LT |
954 | intf->altsetting->desc.bInterfaceNumber); |
955 | ||
131d3a7a JS |
956 | for (n = 0; n < interface->desc.bNumEndpoints; n++) |
957 | if (usb_endpoint_is_int_in(&interface->endpoint[n].desc)) | |
958 | has_in++; | |
959 | if (!has_in) { | |
960 | dev_err(&intf->dev, "couldn't find an input interrupt " | |
961 | "endpoint\n"); | |
962 | return -ENODEV; | |
963 | } | |
964 | ||
c500c971 JS |
965 | hid = hid_allocate_device(); |
966 | if (IS_ERR(hid)) | |
967 | return PTR_ERR(hid); | |
1da177e4 LT |
968 | |
969 | usb_set_intfdata(intf, hid); | |
c500c971 JS |
970 | hid->ll_driver = &usb_hid_driver; |
971 | hid->hid_output_raw_report = usbhid_output_raw_report; | |
76483cf4 | 972 | hid->ff_init = hid_pidff_init; |
c500c971 | 973 | #ifdef CONFIG_USB_HIDDEV |
93c10132 | 974 | hid->hiddev_connect = hiddev_connect; |
c500c971 JS |
975 | hid->hiddev_hid_event = hiddev_hid_event; |
976 | hid->hiddev_report_event = hiddev_report_event; | |
977 | #endif | |
978 | hid->dev.parent = &intf->dev; | |
979 | hid->bus = BUS_USB; | |
980 | hid->vendor = le16_to_cpu(dev->descriptor.idVendor); | |
981 | hid->product = le16_to_cpu(dev->descriptor.idProduct); | |
982 | hid->name[0] = 0; | |
a73a6370 JS |
983 | if (intf->cur_altsetting->desc.bInterfaceProtocol == |
984 | USB_INTERFACE_PROTOCOL_MOUSE) | |
985 | hid->type = HID_TYPE_USBMOUSE; | |
1da177e4 | 986 | |
c500c971 JS |
987 | if (dev->manufacturer) |
988 | strlcpy(hid->name, dev->manufacturer, sizeof(hid->name)); | |
1da177e4 | 989 | |
c500c971 JS |
990 | if (dev->product) { |
991 | if (dev->manufacturer) | |
992 | strlcat(hid->name, " ", sizeof(hid->name)); | |
993 | strlcat(hid->name, dev->product, sizeof(hid->name)); | |
1da177e4 LT |
994 | } |
995 | ||
c500c971 JS |
996 | if (!strlen(hid->name)) |
997 | snprintf(hid->name, sizeof(hid->name), "HID %04x:%04x", | |
998 | le16_to_cpu(dev->descriptor.idVendor), | |
999 | le16_to_cpu(dev->descriptor.idProduct)); | |
1da177e4 | 1000 | |
c500c971 JS |
1001 | usb_make_path(dev, hid->phys, sizeof(hid->phys)); |
1002 | strlcat(hid->phys, "/input", sizeof(hid->phys)); | |
1003 | len = strlen(hid->phys); | |
1004 | if (len < sizeof(hid->phys) - 1) | |
1005 | snprintf(hid->phys + len, sizeof(hid->phys) - len, | |
1006 | "%d", intf->altsetting[0].desc.bInterfaceNumber); | |
1007 | ||
1008 | if (usb_string(dev, dev->descriptor.iSerialNumber, hid->uniq, 64) <= 0) | |
1009 | hid->uniq[0] = 0; | |
1da177e4 | 1010 | |
3d5afd32 JS |
1011 | usbhid = kzalloc(sizeof(*usbhid), GFP_KERNEL); |
1012 | if (usbhid == NULL) { | |
1013 | ret = -ENOMEM; | |
1014 | goto err; | |
1015 | } | |
1016 | ||
1017 | hid->driver_data = usbhid; | |
1018 | usbhid->hid = hid; | |
1019 | mutex_init(&usbhid->setup); /* needed on suspend/resume */ | |
1020 | ||
85cdaf52 JS |
1021 | ret = hid_add_device(hid); |
1022 | if (ret) { | |
d458a9df JS |
1023 | if (ret != -ENODEV) |
1024 | dev_err(&intf->dev, "can't add hid device: %d\n", ret); | |
3d5afd32 | 1025 | goto err_free; |
85cdaf52 | 1026 | } |
c500c971 JS |
1027 | |
1028 | return 0; | |
3d5afd32 JS |
1029 | err_free: |
1030 | kfree(usbhid); | |
c500c971 JS |
1031 | err: |
1032 | hid_destroy_device(hid); | |
85cdaf52 | 1033 | return ret; |
1da177e4 LT |
1034 | } |
1035 | ||
c500c971 JS |
1036 | static void hid_disconnect(struct usb_interface *intf) |
1037 | { | |
1038 | struct hid_device *hid = usb_get_intfdata(intf); | |
3d5afd32 | 1039 | struct usbhid_device *usbhid; |
c500c971 JS |
1040 | |
1041 | if (WARN_ON(!hid)) | |
1042 | return; | |
1043 | ||
3d5afd32 | 1044 | usbhid = hid->driver_data; |
c500c971 | 1045 | hid_destroy_device(hid); |
3d5afd32 | 1046 | kfree(usbhid); |
c500c971 JS |
1047 | } |
1048 | ||
27d72e85 | 1049 | static int hid_suspend(struct usb_interface *intf, pm_message_t message) |
1da177e4 LT |
1050 | { |
1051 | struct hid_device *hid = usb_get_intfdata (intf); | |
4916b3a5 | 1052 | struct usbhid_device *usbhid = hid->driver_data; |
1da177e4 | 1053 | |
3d5afd32 JS |
1054 | mutex_lock(&usbhid->setup); |
1055 | if (!test_bit(HID_STARTED, &usbhid->iofl)) { | |
1056 | mutex_unlock(&usbhid->setup); | |
1057 | return 0; | |
1058 | } | |
1059 | ||
4916b3a5 JK |
1060 | spin_lock_irq(&usbhid->inlock); /* Sync with error handler */ |
1061 | set_bit(HID_SUSPENDED, &usbhid->iofl); | |
1062 | spin_unlock_irq(&usbhid->inlock); | |
b170060c | 1063 | del_timer_sync(&usbhid->io_retry); |
4916b3a5 | 1064 | usb_kill_urb(usbhid->urbin); |
3d5afd32 | 1065 | mutex_unlock(&usbhid->setup); |
1da177e4 LT |
1066 | dev_dbg(&intf->dev, "suspend\n"); |
1067 | return 0; | |
1068 | } | |
1069 | ||
1070 | static int hid_resume(struct usb_interface *intf) | |
1071 | { | |
1072 | struct hid_device *hid = usb_get_intfdata (intf); | |
4916b3a5 | 1073 | struct usbhid_device *usbhid = hid->driver_data; |
1da177e4 LT |
1074 | int status; |
1075 | ||
3d5afd32 JS |
1076 | mutex_lock(&usbhid->setup); |
1077 | if (!test_bit(HID_STARTED, &usbhid->iofl)) { | |
1078 | mutex_unlock(&usbhid->setup); | |
1079 | return 0; | |
1080 | } | |
1081 | ||
4916b3a5 JK |
1082 | clear_bit(HID_SUSPENDED, &usbhid->iofl); |
1083 | usbhid->retry_delay = 0; | |
aef4e266 | 1084 | status = hid_start_in(hid); |
3d5afd32 | 1085 | mutex_unlock(&usbhid->setup); |
1da177e4 LT |
1086 | dev_dbg(&intf->dev, "resume status %d\n", status); |
1087 | return status; | |
1088 | } | |
1089 | ||
df9a1f48 | 1090 | /* Treat USB reset pretty much the same as suspend/resume */ |
f07600cf | 1091 | static int hid_pre_reset(struct usb_interface *intf) |
df9a1f48 AS |
1092 | { |
1093 | /* FIXME: What if the interface is already suspended? */ | |
1094 | hid_suspend(intf, PMSG_ON); | |
f07600cf | 1095 | return 0; |
df9a1f48 AS |
1096 | } |
1097 | ||
f07600cf AS |
1098 | /* Same routine used for post_reset and reset_resume */ |
1099 | static int hid_post_reset(struct usb_interface *intf) | |
df9a1f48 AS |
1100 | { |
1101 | struct usb_device *dev = interface_to_usbdev (intf); | |
1102 | ||
1103 | hid_set_idle(dev, intf->cur_altsetting->desc.bInterfaceNumber, 0, 0); | |
1104 | /* FIXME: Any more reinitialization needed? */ | |
1105 | ||
f07600cf | 1106 | return hid_resume(intf); |
df9a1f48 AS |
1107 | } |
1108 | ||
1da177e4 LT |
1109 | static struct usb_device_id hid_usb_ids [] = { |
1110 | { .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS, | |
1111 | .bInterfaceClass = USB_INTERFACE_CLASS_HID }, | |
1112 | { } /* Terminating entry */ | |
1113 | }; | |
1114 | ||
1115 | MODULE_DEVICE_TABLE (usb, hid_usb_ids); | |
1116 | ||
1117 | static struct usb_driver hid_driver = { | |
1da177e4 LT |
1118 | .name = "usbhid", |
1119 | .probe = hid_probe, | |
1120 | .disconnect = hid_disconnect, | |
1121 | .suspend = hid_suspend, | |
1122 | .resume = hid_resume, | |
f07600cf | 1123 | .reset_resume = hid_post_reset, |
df9a1f48 AS |
1124 | .pre_reset = hid_pre_reset, |
1125 | .post_reset = hid_post_reset, | |
1da177e4 | 1126 | .id_table = hid_usb_ids, |
933e3187 | 1127 | .supports_autosuspend = 1, |
1da177e4 LT |
1128 | }; |
1129 | ||
85cdaf52 JS |
1130 | static const struct hid_device_id hid_usb_table[] = { |
1131 | { HID_USB_DEVICE(HID_ANY_ID, HID_ANY_ID) }, | |
1132 | { } | |
1133 | }; | |
1134 | ||
1135 | static struct hid_driver hid_usb_driver = { | |
1136 | .name = "generic-usb", | |
1137 | .id_table = hid_usb_table, | |
1138 | }; | |
1139 | ||
1da177e4 LT |
1140 | static int __init hid_init(void) |
1141 | { | |
1142 | int retval; | |
85cdaf52 JS |
1143 | retval = hid_register_driver(&hid_usb_driver); |
1144 | if (retval) | |
1145 | goto hid_register_fail; | |
876b9276 PW |
1146 | retval = usbhid_quirks_init(quirks_param); |
1147 | if (retval) | |
1148 | goto usbhid_quirks_init_fail; | |
1da177e4 LT |
1149 | retval = hiddev_init(); |
1150 | if (retval) | |
1151 | goto hiddev_init_fail; | |
1152 | retval = usb_register(&hid_driver); | |
1153 | if (retval) | |
1154 | goto usb_register_fail; | |
ddbe3249 GKH |
1155 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
1156 | DRIVER_DESC "\n"); | |
1da177e4 LT |
1157 | |
1158 | return 0; | |
1159 | usb_register_fail: | |
1160 | hiddev_exit(); | |
1161 | hiddev_init_fail: | |
876b9276 PW |
1162 | usbhid_quirks_exit(); |
1163 | usbhid_quirks_init_fail: | |
85cdaf52 JS |
1164 | hid_unregister_driver(&hid_usb_driver); |
1165 | hid_register_fail: | |
1da177e4 LT |
1166 | return retval; |
1167 | } | |
1168 | ||
1169 | static void __exit hid_exit(void) | |
1170 | { | |
1171 | usb_deregister(&hid_driver); | |
1172 | hiddev_exit(); | |
876b9276 | 1173 | usbhid_quirks_exit(); |
85cdaf52 | 1174 | hid_unregister_driver(&hid_usb_driver); |
1da177e4 LT |
1175 | } |
1176 | ||
1177 | module_init(hid_init); | |
1178 | module_exit(hid_exit); | |
1179 | ||
1180 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
1181 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1182 | MODULE_LICENSE(DRIVER_LICENSE); |