2 * USB HID support for Linux
4 * Copyright (c) 1999 Andreas Gal
5 * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
6 * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
7 * Copyright (c) 2006-2007 Jiri Kosina
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)
17 #include <linux/module.h>
18 #include <linux/slab.h>
19 #include <linux/init.h>
20 #include <linux/kernel.h>
21 #include <linux/list.h>
23 #include <linux/smp_lock.h>
24 #include <linux/spinlock.h>
25 #include <asm/unaligned.h>
26 #include <asm/byteorder.h>
27 #include <linux/input.h>
28 #include <linux/wait.h>
30 #include <linux/usb.h>
32 #include <linux/hid.h>
33 #include <linux/hiddev.h>
34 #include <linux/hid-debug.h>
35 #include <linux/hidraw.h>
42 #define DRIVER_VERSION "v2.6"
43 #define DRIVER_AUTHOR "Andreas Gal, Vojtech Pavlik, Jiri Kosina"
44 #define DRIVER_DESC "USB HID core driver"
45 #define DRIVER_LICENSE "GPL"
47 static char *hid_types[] = {"Device", "Pointer", "Mouse", "Device", "Joystick",
48 "Gamepad", "Keyboard", "Keypad", "Multi-Axis Controller"};
53 static unsigned int hid_mousepoll_interval;
54 module_param_named(mousepoll, hid_mousepoll_interval, uint, 0644);
55 MODULE_PARM_DESC(mousepoll, "Polling interval of mice");
57 /* Quirks specified at module load time */
58 static char *quirks_param[MAX_USBHID_BOOT_QUIRKS] = { [ 0 ... (MAX_USBHID_BOOT_QUIRKS - 1) ] = NULL };
59 module_param_array_named(quirks, quirks_param, charp, NULL, 0444);
60 MODULE_PARM_DESC(quirks, "Add/modify USB HID quirks by specifying "
61 " quirks=vendorID:productID:quirks"
62 " where vendorID, productID, and quirks are all in"
64 static char *rdesc_quirks_param[MAX_USBHID_BOOT_QUIRKS] = { [ 0 ... (MAX_USBHID_BOOT_QUIRKS - 1) ] = NULL };
65 module_param_array_named(rdesc_quirks, rdesc_quirks_param, charp, NULL, 0444);
66 MODULE_PARM_DESC(rdesc_quirks, "Add/modify report descriptor quirks by specifying "
67 " rdesc_quirks=vendorID:productID:rdesc_quirks"
68 " where vendorID, productID, and rdesc_quirks are all in"
71 * Input submission and I/O error handler.
74 static void hid_io_error(struct hid_device *hid);
76 /* Start up the input URB */
77 static int hid_start_in(struct hid_device *hid)
81 struct usbhid_device *usbhid = hid->driver_data;
83 spin_lock_irqsave(&usbhid->inlock, flags);
84 if (hid->open > 0 && !test_bit(HID_SUSPENDED, &usbhid->iofl) &&
85 !test_and_set_bit(HID_IN_RUNNING, &usbhid->iofl)) {
86 rc = usb_submit_urb(usbhid->urbin, GFP_ATOMIC);
88 clear_bit(HID_IN_RUNNING, &usbhid->iofl);
90 spin_unlock_irqrestore(&usbhid->inlock, flags);
94 /* I/O retry timer routine */
95 static void hid_retry_timeout(unsigned long _hid)
97 struct hid_device *hid = (struct hid_device *) _hid;
98 struct usbhid_device *usbhid = hid->driver_data;
100 dev_dbg(&usbhid->intf->dev, "retrying intr urb\n");
101 if (hid_start_in(hid))
105 /* Workqueue routine to reset the device or clear a halt */
106 static void hid_reset(struct work_struct *work)
108 struct usbhid_device *usbhid =
109 container_of(work, struct usbhid_device, reset_work);
110 struct hid_device *hid = usbhid->hid;
113 if (test_bit(HID_CLEAR_HALT, &usbhid->iofl)) {
114 dev_dbg(&usbhid->intf->dev, "clear halt\n");
115 rc = usb_clear_halt(hid_to_usb_dev(hid), usbhid->urbin->pipe);
116 clear_bit(HID_CLEAR_HALT, &usbhid->iofl);
120 else if (test_bit(HID_RESET_PENDING, &usbhid->iofl)) {
121 dev_dbg(&usbhid->intf->dev, "resetting device\n");
122 rc = rc_lock = usb_lock_device_for_reset(hid_to_usb_dev(hid), usbhid->intf);
124 rc = usb_reset_composite_device(hid_to_usb_dev(hid), usbhid->intf);
126 usb_unlock_device(hid_to_usb_dev(hid));
128 clear_bit(HID_RESET_PENDING, &usbhid->iofl);
133 if (!test_bit(HID_IN_RUNNING, &usbhid->iofl))
137 err_hid("can't reset device, %s-%s/input%d, status %d",
138 hid_to_usb_dev(hid)->bus->bus_name,
139 hid_to_usb_dev(hid)->devpath,
149 /* Main I/O error handler */
150 static void hid_io_error(struct hid_device *hid)
153 struct usbhid_device *usbhid = hid->driver_data;
155 spin_lock_irqsave(&usbhid->inlock, flags);
157 /* Stop when disconnected */
158 if (usb_get_intfdata(usbhid->intf) == NULL)
161 /* If it has been a while since the last error, we'll assume
162 * this a brand new error and reset the retry timeout. */
163 if (time_after(jiffies, usbhid->stop_retry + HZ/2))
164 usbhid->retry_delay = 0;
166 /* When an error occurs, retry at increasing intervals */
167 if (usbhid->retry_delay == 0) {
168 usbhid->retry_delay = 13; /* Then 26, 52, 104, 104, ... */
169 usbhid->stop_retry = jiffies + msecs_to_jiffies(1000);
170 } else if (usbhid->retry_delay < 100)
171 usbhid->retry_delay *= 2;
173 if (time_after(jiffies, usbhid->stop_retry)) {
175 /* Retries failed, so do a port reset */
176 if (!test_and_set_bit(HID_RESET_PENDING, &usbhid->iofl)) {
177 schedule_work(&usbhid->reset_work);
182 mod_timer(&usbhid->io_retry,
183 jiffies + msecs_to_jiffies(usbhid->retry_delay));
185 spin_unlock_irqrestore(&usbhid->inlock, flags);
189 * Input interrupt completion handler.
192 static void hid_irq_in(struct urb *urb)
194 struct hid_device *hid = urb->context;
195 struct usbhid_device *usbhid = hid->driver_data;
198 switch (urb->status) {
199 case 0: /* success */
200 usbhid->retry_delay = 0;
201 hid_input_report(urb->context, HID_INPUT_REPORT,
202 urb->transfer_buffer,
203 urb->actual_length, 1);
205 case -EPIPE: /* stall */
206 clear_bit(HID_IN_RUNNING, &usbhid->iofl);
207 set_bit(HID_CLEAR_HALT, &usbhid->iofl);
208 schedule_work(&usbhid->reset_work);
210 case -ECONNRESET: /* unlink */
212 case -ESHUTDOWN: /* unplug */
213 clear_bit(HID_IN_RUNNING, &usbhid->iofl);
215 case -EILSEQ: /* protocol error or unplug */
216 case -EPROTO: /* protocol error or unplug */
217 case -ETIME: /* protocol error or unplug */
218 case -ETIMEDOUT: /* Should never happen, but... */
219 clear_bit(HID_IN_RUNNING, &usbhid->iofl);
223 warn("input irq status %d received", urb->status);
226 status = usb_submit_urb(urb, GFP_ATOMIC);
228 clear_bit(HID_IN_RUNNING, &usbhid->iofl);
229 if (status != -EPERM) {
230 err_hid("can't resubmit intr, %s-%s/input%d, status %d",
231 hid_to_usb_dev(hid)->bus->bus_name,
232 hid_to_usb_dev(hid)->devpath,
233 usbhid->ifnum, status);
239 static int hid_submit_out(struct hid_device *hid)
241 struct hid_report *report;
242 struct usbhid_device *usbhid = hid->driver_data;
244 report = usbhid->out[usbhid->outtail];
246 hid_output_report(report, usbhid->outbuf);
247 usbhid->urbout->transfer_buffer_length = ((report->size - 1) >> 3) + 1 + (report->id > 0);
248 usbhid->urbout->dev = hid_to_usb_dev(hid);
250 dbg_hid("submitting out urb\n");
252 if (usb_submit_urb(usbhid->urbout, GFP_ATOMIC)) {
253 err_hid("usb_submit_urb(out) failed");
260 static int hid_submit_ctrl(struct hid_device *hid)
262 struct hid_report *report;
265 struct usbhid_device *usbhid = hid->driver_data;
267 report = usbhid->ctrl[usbhid->ctrltail].report;
268 dir = usbhid->ctrl[usbhid->ctrltail].dir;
270 len = ((report->size - 1) >> 3) + 1 + (report->id > 0);
271 if (dir == USB_DIR_OUT) {
272 hid_output_report(report, usbhid->ctrlbuf);
273 usbhid->urbctrl->pipe = usb_sndctrlpipe(hid_to_usb_dev(hid), 0);
274 usbhid->urbctrl->transfer_buffer_length = len;
276 int maxpacket, padlen;
278 usbhid->urbctrl->pipe = usb_rcvctrlpipe(hid_to_usb_dev(hid), 0);
279 maxpacket = usb_maxpacket(hid_to_usb_dev(hid), usbhid->urbctrl->pipe, 0);
281 padlen = DIV_ROUND_UP(len, maxpacket);
283 if (padlen > usbhid->bufsize)
284 padlen = usbhid->bufsize;
287 usbhid->urbctrl->transfer_buffer_length = padlen;
289 usbhid->urbctrl->dev = hid_to_usb_dev(hid);
291 usbhid->cr->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE | dir;
292 usbhid->cr->bRequest = (dir == USB_DIR_OUT) ? HID_REQ_SET_REPORT : HID_REQ_GET_REPORT;
293 usbhid->cr->wValue = cpu_to_le16(((report->type + 1) << 8) | report->id);
294 usbhid->cr->wIndex = cpu_to_le16(usbhid->ifnum);
295 usbhid->cr->wLength = cpu_to_le16(len);
297 dbg_hid("submitting ctrl urb: %s wValue=0x%04x wIndex=0x%04x wLength=%u\n",
298 usbhid->cr->bRequest == HID_REQ_SET_REPORT ? "Set_Report" : "Get_Report",
299 usbhid->cr->wValue, usbhid->cr->wIndex, usbhid->cr->wLength);
301 if (usb_submit_urb(usbhid->urbctrl, GFP_ATOMIC)) {
302 err_hid("usb_submit_urb(ctrl) failed");
310 * Output interrupt completion handler.
313 static void hid_irq_out(struct urb *urb)
315 struct hid_device *hid = urb->context;
316 struct usbhid_device *usbhid = hid->driver_data;
320 switch (urb->status) {
321 case 0: /* success */
323 case -ESHUTDOWN: /* unplug */
325 case -EILSEQ: /* protocol error or unplug */
326 case -EPROTO: /* protocol error or unplug */
327 case -ECONNRESET: /* unlink */
331 warn("output irq status %d received", urb->status);
334 spin_lock_irqsave(&usbhid->outlock, flags);
337 usbhid->outtail = usbhid->outhead;
339 usbhid->outtail = (usbhid->outtail + 1) & (HID_OUTPUT_FIFO_SIZE - 1);
341 if (usbhid->outhead != usbhid->outtail) {
342 if (hid_submit_out(hid)) {
343 clear_bit(HID_OUT_RUNNING, &usbhid->iofl);
346 spin_unlock_irqrestore(&usbhid->outlock, flags);
350 clear_bit(HID_OUT_RUNNING, &usbhid->iofl);
351 spin_unlock_irqrestore(&usbhid->outlock, flags);
356 * Control pipe completion handler.
359 static void hid_ctrl(struct urb *urb)
361 struct hid_device *hid = urb->context;
362 struct usbhid_device *usbhid = hid->driver_data;
366 spin_lock_irqsave(&usbhid->ctrllock, flags);
368 switch (urb->status) {
369 case 0: /* success */
370 if (usbhid->ctrl[usbhid->ctrltail].dir == USB_DIR_IN)
371 hid_input_report(urb->context, usbhid->ctrl[usbhid->ctrltail].report->type,
372 urb->transfer_buffer, urb->actual_length, 0);
374 case -ESHUTDOWN: /* unplug */
376 case -EILSEQ: /* protocol error or unplug */
377 case -EPROTO: /* protocol error or unplug */
378 case -ECONNRESET: /* unlink */
380 case -EPIPE: /* report not available */
383 warn("ctrl urb status %d received", urb->status);
387 usbhid->ctrltail = usbhid->ctrlhead;
389 usbhid->ctrltail = (usbhid->ctrltail + 1) & (HID_CONTROL_FIFO_SIZE - 1);
391 if (usbhid->ctrlhead != usbhid->ctrltail) {
392 if (hid_submit_ctrl(hid)) {
393 clear_bit(HID_CTRL_RUNNING, &usbhid->iofl);
396 spin_unlock_irqrestore(&usbhid->ctrllock, flags);
400 clear_bit(HID_CTRL_RUNNING, &usbhid->iofl);
401 spin_unlock_irqrestore(&usbhid->ctrllock, flags);
405 void usbhid_submit_report(struct hid_device *hid, struct hid_report *report, unsigned char dir)
409 struct usbhid_device *usbhid = hid->driver_data;
411 if ((hid->quirks & HID_QUIRK_NOGET) && dir == USB_DIR_IN)
414 if (usbhid->urbout && dir == USB_DIR_OUT && report->type == HID_OUTPUT_REPORT) {
416 spin_lock_irqsave(&usbhid->outlock, flags);
418 if ((head = (usbhid->outhead + 1) & (HID_OUTPUT_FIFO_SIZE - 1)) == usbhid->outtail) {
419 spin_unlock_irqrestore(&usbhid->outlock, flags);
420 warn("output queue full");
424 usbhid->out[usbhid->outhead] = report;
425 usbhid->outhead = head;
427 if (!test_and_set_bit(HID_OUT_RUNNING, &usbhid->iofl))
428 if (hid_submit_out(hid))
429 clear_bit(HID_OUT_RUNNING, &usbhid->iofl);
431 spin_unlock_irqrestore(&usbhid->outlock, flags);
435 spin_lock_irqsave(&usbhid->ctrllock, flags);
437 if ((head = (usbhid->ctrlhead + 1) & (HID_CONTROL_FIFO_SIZE - 1)) == usbhid->ctrltail) {
438 spin_unlock_irqrestore(&usbhid->ctrllock, flags);
439 warn("control queue full");
443 usbhid->ctrl[usbhid->ctrlhead].report = report;
444 usbhid->ctrl[usbhid->ctrlhead].dir = dir;
445 usbhid->ctrlhead = head;
447 if (!test_and_set_bit(HID_CTRL_RUNNING, &usbhid->iofl))
448 if (hid_submit_ctrl(hid))
449 clear_bit(HID_CTRL_RUNNING, &usbhid->iofl);
451 spin_unlock_irqrestore(&usbhid->ctrllock, flags);
454 static int usb_hidinput_input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
456 struct hid_device *hid = input_get_drvdata(dev);
457 struct hid_field *field;
461 return input_ff_event(dev, type, code, value);
466 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) {
467 warn("event field not found");
471 hid_set_field(field, offset, value);
472 usbhid_submit_report(hid, field->report, USB_DIR_OUT);
477 int usbhid_wait_io(struct hid_device *hid)
479 struct usbhid_device *usbhid = hid->driver_data;
481 if (!wait_event_timeout(hid->wait, (!test_bit(HID_CTRL_RUNNING, &usbhid->iofl) &&
482 !test_bit(HID_OUT_RUNNING, &usbhid->iofl)),
484 dbg_hid("timeout waiting for ctrl or out queue to clear\n");
491 static int hid_set_idle(struct usb_device *dev, int ifnum, int report, int idle)
493 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
494 HID_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE, (idle << 8) | report,
495 ifnum, NULL, 0, USB_CTRL_SET_TIMEOUT);
498 static int hid_get_class_descriptor(struct usb_device *dev, int ifnum,
499 unsigned char type, void *buf, int size)
501 int result, retries = 4;
503 memset(buf, 0, size);
506 result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
507 USB_REQ_GET_DESCRIPTOR, USB_RECIP_INTERFACE | USB_DIR_IN,
508 (type << 8), ifnum, buf, size, USB_CTRL_GET_TIMEOUT);
510 } while (result < size && retries);
514 int usbhid_open(struct hid_device *hid)
516 struct usbhid_device *usbhid = hid->driver_data;
520 res = usb_autopm_get_interface(usbhid->intf);
526 if (hid_start_in(hid))
531 void usbhid_close(struct hid_device *hid)
533 struct usbhid_device *usbhid = hid->driver_data;
536 usb_kill_urb(usbhid->urbin);
537 usb_autopm_put_interface(usbhid->intf);
542 * Initialize all reports
545 void usbhid_init_reports(struct hid_device *hid)
547 struct hid_report *report;
548 struct usbhid_device *usbhid = hid->driver_data;
551 list_for_each_entry(report, &hid->report_enum[HID_INPUT_REPORT].report_list, list)
552 usbhid_submit_report(hid, report, USB_DIR_IN);
554 list_for_each_entry(report, &hid->report_enum[HID_FEATURE_REPORT].report_list, list)
555 usbhid_submit_report(hid, report, USB_DIR_IN);
558 ret = usbhid_wait_io(hid);
561 if (test_bit(HID_CTRL_RUNNING, &usbhid->iofl))
562 usb_kill_urb(usbhid->urbctrl);
563 if (test_bit(HID_OUT_RUNNING, &usbhid->iofl))
564 usb_kill_urb(usbhid->urbout);
565 ret = usbhid_wait_io(hid);
569 warn("timeout initializing reports");
573 * Reset LEDs which BIOS might have left on. For now, just NumLock (0x01).
575 static int hid_find_field_early(struct hid_device *hid, unsigned int page,
576 unsigned int hid_code, struct hid_field **pfield)
578 struct hid_report *report;
579 struct hid_field *field;
580 struct hid_usage *usage;
583 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
584 for (i = 0; i < report->maxfield; i++) {
585 field = report->field[i];
586 for (j = 0; j < field->maxusage; j++) {
587 usage = &field->usage[j];
588 if ((usage->hid & HID_USAGE_PAGE) == page &&
589 (usage->hid & 0xFFFF) == hid_code) {
599 static void usbhid_set_leds(struct hid_device *hid)
601 struct hid_field *field;
604 if ((offset = hid_find_field_early(hid, HID_UP_LED, 0x01, &field)) != -1) {
605 hid_set_field(field, offset, 0);
606 usbhid_submit_report(hid, field->report, USB_DIR_OUT);
611 * Traverse the supplied list of reports and find the longest
613 static void hid_find_max_report(struct hid_device *hid, unsigned int type,
616 struct hid_report *report;
619 list_for_each_entry(report, &hid->report_enum[type].report_list, list) {
620 size = ((report->size - 1) >> 3) + 1;
621 if (type == HID_INPUT_REPORT && hid->report_enum[type].numbered)
628 static int hid_alloc_buffers(struct usb_device *dev, struct hid_device *hid)
630 struct usbhid_device *usbhid = hid->driver_data;
632 if (!(usbhid->inbuf = usb_buffer_alloc(dev, usbhid->bufsize, GFP_ATOMIC, &usbhid->inbuf_dma)))
634 if (!(usbhid->outbuf = usb_buffer_alloc(dev, usbhid->bufsize, GFP_ATOMIC, &usbhid->outbuf_dma)))
636 if (!(usbhid->cr = usb_buffer_alloc(dev, sizeof(*(usbhid->cr)), GFP_ATOMIC, &usbhid->cr_dma)))
638 if (!(usbhid->ctrlbuf = usb_buffer_alloc(dev, usbhid->bufsize, GFP_ATOMIC, &usbhid->ctrlbuf_dma)))
644 static int usbhid_output_raw_report(struct hid_device *hid, __u8 *buf, size_t count)
646 struct usbhid_device *usbhid = hid->driver_data;
647 struct usb_device *dev = hid_to_usb_dev(hid);
648 struct usb_interface *intf = usbhid->intf;
649 struct usb_host_interface *interface = intf->cur_altsetting;
652 ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
654 USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
655 cpu_to_le16(((HID_OUTPUT_REPORT + 1) << 8) | *buf),
656 interface->desc.bInterfaceNumber, buf + 1, count - 1,
657 USB_CTRL_SET_TIMEOUT);
659 /* count also the report id */
666 static void hid_free_buffers(struct usb_device *dev, struct hid_device *hid)
668 struct usbhid_device *usbhid = hid->driver_data;
670 usb_buffer_free(dev, usbhid->bufsize, usbhid->inbuf, usbhid->inbuf_dma);
671 usb_buffer_free(dev, usbhid->bufsize, usbhid->outbuf, usbhid->outbuf_dma);
672 usb_buffer_free(dev, sizeof(*(usbhid->cr)), usbhid->cr, usbhid->cr_dma);
673 usb_buffer_free(dev, usbhid->bufsize, usbhid->ctrlbuf, usbhid->ctrlbuf_dma);
677 * Sending HID_REQ_GET_REPORT changes the operation mode of the ps3 controller
678 * to "operational". Without this, the ps3 controller will not report any
681 static void hid_fixup_sony_ps3_controller(struct usb_device *dev, int ifnum)
684 char *buf = kmalloc(18, GFP_KERNEL);
689 result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
691 USB_DIR_IN | USB_TYPE_CLASS |
693 (3 << 8) | 0xf2, ifnum, buf, 17,
694 USB_CTRL_GET_TIMEOUT);
697 err_hid("%s failed: %d\n", __func__, result);
702 static struct hid_device *usb_hid_configure(struct usb_interface *intf)
704 struct usb_host_interface *interface = intf->cur_altsetting;
705 struct usb_device *dev = interface_to_usbdev (intf);
706 struct hid_descriptor *hdesc;
707 struct hid_device *hid;
709 unsigned int insize = 0, rsize = 0;
712 struct usbhid_device *usbhid;
714 quirks = usbhid_lookup_quirk(le16_to_cpu(dev->descriptor.idVendor),
715 le16_to_cpu(dev->descriptor.idProduct));
717 /* Many keyboards and mice don't like to be polled for reports,
718 * so we will always set the HID_QUIRK_NOGET flag for them. */
719 if (interface->desc.bInterfaceSubClass == USB_INTERFACE_SUBCLASS_BOOT) {
720 if (interface->desc.bInterfaceProtocol == USB_INTERFACE_PROTOCOL_KEYBOARD ||
721 interface->desc.bInterfaceProtocol == USB_INTERFACE_PROTOCOL_MOUSE)
722 quirks |= HID_QUIRK_NOGET;
725 if (quirks & HID_QUIRK_IGNORE)
728 if ((quirks & HID_QUIRK_IGNORE_MOUSE) &&
729 (interface->desc.bInterfaceProtocol == USB_INTERFACE_PROTOCOL_MOUSE))
733 if (usb_get_extra_descriptor(interface, HID_DT_HID, &hdesc) &&
734 (!interface->desc.bNumEndpoints ||
735 usb_get_extra_descriptor(&interface->endpoint[0], HID_DT_HID, &hdesc))) {
736 dbg_hid("class descriptor not present\n");
740 for (n = 0; n < hdesc->bNumDescriptors; n++)
741 if (hdesc->desc[n].bDescriptorType == HID_DT_REPORT)
742 rsize = le16_to_cpu(hdesc->desc[n].wDescriptorLength);
744 if (!rsize || rsize > HID_MAX_DESCRIPTOR_SIZE) {
745 dbg_hid("weird size of report descriptor (%u)\n", rsize);
749 if (!(rdesc = kmalloc(rsize, GFP_KERNEL))) {
750 dbg_hid("couldn't allocate rdesc memory\n");
754 hid_set_idle(dev, interface->desc.bInterfaceNumber, 0, 0);
756 if ((n = hid_get_class_descriptor(dev, interface->desc.bInterfaceNumber, HID_DT_REPORT, rdesc, rsize)) < 0) {
757 dbg_hid("reading report descriptor failed\n");
762 usbhid_fixup_report_descriptor(le16_to_cpu(dev->descriptor.idVendor),
763 le16_to_cpu(dev->descriptor.idProduct), rdesc,
764 rsize, rdesc_quirks_param);
766 dbg_hid("report descriptor (size %u, read %d) = ", rsize, n);
767 for (n = 0; n < rsize; n++)
768 dbg_hid_line(" %02x", (unsigned char) rdesc[n]);
771 if (!(hid = hid_parse_report(rdesc, n))) {
772 dbg_hid("parsing report descriptor failed\n");
778 hid->quirks = quirks;
780 if (!(usbhid = kzalloc(sizeof(struct usbhid_device), GFP_KERNEL)))
783 hid->driver_data = usbhid;
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);
791 if (usbhid->bufsize > HID_MAX_BUFFER_SIZE)
792 usbhid->bufsize = HID_MAX_BUFFER_SIZE;
794 hid_find_max_report(hid, HID_INPUT_REPORT, &insize);
796 if (insize > HID_MAX_BUFFER_SIZE)
797 insize = HID_MAX_BUFFER_SIZE;
799 if (hid_alloc_buffers(dev, hid)) {
800 hid_free_buffers(dev, hid);
806 if (dev->manufacturer)
807 strlcpy(hid->name, dev->manufacturer, sizeof(hid->name));
810 if (dev->manufacturer)
811 strlcat(hid->name, " ", sizeof(hid->name));
812 strlcat(hid->name, dev->product, sizeof(hid->name));
815 if (!strlen(hid->name))
816 snprintf(hid->name, sizeof(hid->name), "HID %04x:%04x",
817 le16_to_cpu(dev->descriptor.idVendor),
818 le16_to_cpu(dev->descriptor.idProduct));
820 for (n = 0; n < interface->desc.bNumEndpoints; n++) {
822 struct usb_endpoint_descriptor *endpoint;
826 endpoint = &interface->endpoint[n].desc;
827 if ((endpoint->bmAttributes & 3) != 3) /* Not an interrupt endpoint */
830 interval = endpoint->bInterval;
832 /* Some vendors give fullspeed interval on highspeed devides */
833 if (quirks & HID_QUIRK_FULLSPEED_INTERVAL &&
834 dev->speed == USB_SPEED_HIGH) {
835 interval = fls(endpoint->bInterval*8);
836 printk(KERN_INFO "%s: Fixing fullspeed to highspeed interval: %d -> %d\n",
837 hid->name, endpoint->bInterval, interval);
840 /* Change the polling interval of mice. */
841 if (hid->collection->usage == HID_GD_MOUSE && hid_mousepoll_interval > 0)
842 interval = hid_mousepoll_interval;
844 if (usb_endpoint_dir_in(endpoint)) {
847 if (!(usbhid->urbin = usb_alloc_urb(0, GFP_KERNEL)))
849 pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
850 usb_fill_int_urb(usbhid->urbin, dev, pipe, usbhid->inbuf, insize,
851 hid_irq_in, hid, interval);
852 usbhid->urbin->transfer_dma = usbhid->inbuf_dma;
853 usbhid->urbin->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
857 if (!(usbhid->urbout = usb_alloc_urb(0, GFP_KERNEL)))
859 pipe = usb_sndintpipe(dev, endpoint->bEndpointAddress);
860 usb_fill_int_urb(usbhid->urbout, dev, pipe, usbhid->outbuf, 0,
861 hid_irq_out, hid, interval);
862 usbhid->urbout->transfer_dma = usbhid->outbuf_dma;
863 usbhid->urbout->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
867 if (!usbhid->urbin) {
868 err_hid("couldn't find an input interrupt endpoint");
872 init_waitqueue_head(&hid->wait);
874 INIT_WORK(&usbhid->reset_work, hid_reset);
875 setup_timer(&usbhid->io_retry, hid_retry_timeout, (unsigned long) hid);
877 spin_lock_init(&usbhid->inlock);
878 spin_lock_init(&usbhid->outlock);
879 spin_lock_init(&usbhid->ctrllock);
881 hid->version = le16_to_cpu(hdesc->bcdHID);
882 hid->country = hdesc->bCountryCode;
883 hid->dev = &intf->dev;
885 usbhid->ifnum = interface->desc.bInterfaceNumber;
888 hid->vendor = le16_to_cpu(dev->descriptor.idVendor);
889 hid->product = le16_to_cpu(dev->descriptor.idProduct);
891 usb_make_path(dev, hid->phys, sizeof(hid->phys));
892 strlcat(hid->phys, "/input", sizeof(hid->phys));
893 len = strlen(hid->phys);
894 if (len < sizeof(hid->phys) - 1)
895 snprintf(hid->phys + len, sizeof(hid->phys) - len,
896 "%d", intf->altsetting[0].desc.bInterfaceNumber);
898 if (usb_string(dev, dev->descriptor.iSerialNumber, hid->uniq, 64) <= 0)
901 usbhid->urbctrl = usb_alloc_urb(0, GFP_KERNEL);
902 if (!usbhid->urbctrl)
905 usb_fill_control_urb(usbhid->urbctrl, dev, 0, (void *) usbhid->cr,
906 usbhid->ctrlbuf, 1, hid_ctrl, hid);
907 usbhid->urbctrl->setup_dma = usbhid->cr_dma;
908 usbhid->urbctrl->transfer_dma = usbhid->ctrlbuf_dma;
909 usbhid->urbctrl->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP | URB_NO_SETUP_DMA_MAP);
910 hid->hidinput_input_event = usb_hidinput_input_event;
911 hid->hid_open = usbhid_open;
912 hid->hid_close = usbhid_close;
913 #ifdef CONFIG_USB_HIDDEV
914 hid->hiddev_hid_event = hiddev_hid_event;
915 hid->hiddev_report_event = hiddev_report_event;
917 hid->hid_output_raw_report = usbhid_output_raw_report;
921 usb_free_urb(usbhid->urbin);
922 usb_free_urb(usbhid->urbout);
923 usb_free_urb(usbhid->urbctrl);
924 hid_free_buffers(dev, hid);
927 hid_free_device(hid);
932 static void hid_disconnect(struct usb_interface *intf)
934 struct hid_device *hid = usb_get_intfdata (intf);
935 struct usbhid_device *usbhid;
940 usbhid = hid->driver_data;
942 spin_lock_irq(&usbhid->inlock); /* Sync with error handler */
943 usb_set_intfdata(intf, NULL);
944 spin_unlock_irq(&usbhid->inlock);
945 usb_kill_urb(usbhid->urbin);
946 usb_kill_urb(usbhid->urbout);
947 usb_kill_urb(usbhid->urbctrl);
949 del_timer_sync(&usbhid->io_retry);
950 cancel_work_sync(&usbhid->reset_work);
952 if (hid->claimed & HID_CLAIMED_INPUT)
953 hidinput_disconnect(hid);
954 if (hid->claimed & HID_CLAIMED_HIDDEV)
955 hiddev_disconnect(hid);
956 if (hid->claimed & HID_CLAIMED_HIDRAW)
957 hidraw_disconnect(hid);
959 usb_free_urb(usbhid->urbin);
960 usb_free_urb(usbhid->urbctrl);
961 usb_free_urb(usbhid->urbout);
963 hid_free_buffers(hid_to_usb_dev(hid), hid);
965 hid_free_device(hid);
968 static int hid_probe(struct usb_interface *intf, const struct usb_device_id *id)
970 struct hid_device *hid;
975 dbg_hid("HID probe called for ifnum %d\n",
976 intf->altsetting->desc.bInterfaceNumber);
978 if (!(hid = usb_hid_configure(intf)))
981 usbhid_init_reports(hid);
982 hid_dump_device(hid);
983 if (hid->quirks & HID_QUIRK_RESET_LEDS)
984 usbhid_set_leds(hid);
986 if (!hidinput_connect(hid))
987 hid->claimed |= HID_CLAIMED_INPUT;
988 if (!hiddev_connect(hid))
989 hid->claimed |= HID_CLAIMED_HIDDEV;
990 if (!hidraw_connect(hid))
991 hid->claimed |= HID_CLAIMED_HIDRAW;
993 usb_set_intfdata(intf, hid);
996 printk ("HID device claimed by neither input, hiddev nor hidraw\n");
997 hid_disconnect(intf);
1001 if ((hid->claimed & HID_CLAIMED_INPUT))
1004 if (hid->quirks & HID_QUIRK_SONY_PS3_CONTROLLER)
1005 hid_fixup_sony_ps3_controller(interface_to_usbdev(intf),
1006 intf->cur_altsetting->desc.bInterfaceNumber);
1010 if (hid->claimed & HID_CLAIMED_INPUT)
1012 if ((hid->claimed & HID_CLAIMED_INPUT) && ((hid->claimed & HID_CLAIMED_HIDDEV) ||
1013 hid->claimed & HID_CLAIMED_HIDRAW))
1015 if (hid->claimed & HID_CLAIMED_HIDDEV)
1016 printk("hiddev%d", hid->minor);
1017 if ((hid->claimed & HID_CLAIMED_INPUT) && (hid->claimed & HID_CLAIMED_HIDDEV) &&
1018 (hid->claimed & HID_CLAIMED_HIDRAW))
1020 if (hid->claimed & HID_CLAIMED_HIDRAW)
1021 printk("hidraw%d", ((struct hidraw*)hid->hidraw)->minor);
1024 for (i = 0; i < hid->maxcollection; i++) {
1025 if (hid->collection[i].type == HID_COLLECTION_APPLICATION &&
1026 (hid->collection[i].usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1027 (hid->collection[i].usage & 0xffff) < ARRAY_SIZE(hid_types)) {
1028 c = hid_types[hid->collection[i].usage & 0xffff];
1033 usb_make_path(interface_to_usbdev(intf), path, 63);
1035 printk(": USB HID v%x.%02x %s [%s] on %s\n",
1036 hid->version >> 8, hid->version & 0xff, c, hid->name, path);
1041 static int hid_suspend(struct usb_interface *intf, pm_message_t message)
1043 struct hid_device *hid = usb_get_intfdata (intf);
1044 struct usbhid_device *usbhid = hid->driver_data;
1046 spin_lock_irq(&usbhid->inlock); /* Sync with error handler */
1047 set_bit(HID_SUSPENDED, &usbhid->iofl);
1048 spin_unlock_irq(&usbhid->inlock);
1049 del_timer(&usbhid->io_retry);
1050 usb_kill_urb(usbhid->urbin);
1051 dev_dbg(&intf->dev, "suspend\n");
1055 static int hid_resume(struct usb_interface *intf)
1057 struct hid_device *hid = usb_get_intfdata (intf);
1058 struct usbhid_device *usbhid = hid->driver_data;
1061 clear_bit(HID_SUSPENDED, &usbhid->iofl);
1062 usbhid->retry_delay = 0;
1063 status = hid_start_in(hid);
1064 dev_dbg(&intf->dev, "resume status %d\n", status);
1068 /* Treat USB reset pretty much the same as suspend/resume */
1069 static int hid_pre_reset(struct usb_interface *intf)
1071 /* FIXME: What if the interface is already suspended? */
1072 hid_suspend(intf, PMSG_ON);
1076 /* Same routine used for post_reset and reset_resume */
1077 static int hid_post_reset(struct usb_interface *intf)
1079 struct usb_device *dev = interface_to_usbdev (intf);
1081 hid_set_idle(dev, intf->cur_altsetting->desc.bInterfaceNumber, 0, 0);
1082 /* FIXME: Any more reinitialization needed? */
1084 return hid_resume(intf);
1087 static struct usb_device_id hid_usb_ids [] = {
1088 { .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS,
1089 .bInterfaceClass = USB_INTERFACE_CLASS_HID },
1090 { } /* Terminating entry */
1093 MODULE_DEVICE_TABLE (usb, hid_usb_ids);
1095 static struct usb_driver hid_driver = {
1098 .disconnect = hid_disconnect,
1099 .suspend = hid_suspend,
1100 .resume = hid_resume,
1101 .reset_resume = hid_post_reset,
1102 .pre_reset = hid_pre_reset,
1103 .post_reset = hid_post_reset,
1104 .id_table = hid_usb_ids,
1105 .supports_autosuspend = 1,
1108 static int __init hid_init(void)
1111 retval = usbhid_quirks_init(quirks_param);
1113 goto usbhid_quirks_init_fail;
1114 retval = hiddev_init();
1116 goto hiddev_init_fail;
1117 retval = usb_register(&hid_driver);
1119 goto usb_register_fail;
1120 info(DRIVER_VERSION ":" DRIVER_DESC);
1126 usbhid_quirks_exit();
1127 usbhid_quirks_init_fail:
1131 static void __exit hid_exit(void)
1133 usb_deregister(&hid_driver);
1135 usbhid_quirks_exit();
1138 module_init(hid_init);
1139 module_exit(hid_exit);
1141 MODULE_AUTHOR(DRIVER_AUTHOR);
1142 MODULE_DESCRIPTION(DRIVER_DESC);
1143 MODULE_LICENSE(DRIVER_LICENSE);