1 files changed, 1114 insertions, 0 deletions

diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c
new file mode 100644
index 000000000000..91d610358d57
--- /dev/null
+++ b/drivers/hid/usbhid/hid-core.c
@@ -0,0 +1,1114 @@
+/*
+ *  USB HID support for Linux
+ *
+ *  Copyright (c) 1999 Andreas Gal
+ *  Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
+ *  Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
+ *  Copyright (c) 2006-2007 Jiri Kosina
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/mm.h>
+#include <linux/smp_lock.h>
+#include <linux/spinlock.h>
+#include <asm/unaligned.h>
+#include <asm/byteorder.h>
+#include <linux/input.h>
+#include <linux/wait.h>
+
+#include <linux/usb.h>
+
+#include <linux/hid.h>
+#include <linux/hiddev.h>
+#include <linux/hid-debug.h>
+#include "usbhid.h"
+
+/*
+ * Version Information
+ */
+
+#define DRIVER_VERSION "v2.6"
+#define DRIVER_AUTHOR "Andreas Gal, Vojtech Pavlik, Jiri Kosina"
+#define DRIVER_DESC "USB HID core driver"
+#define DRIVER_LICENSE "GPL"
+
+static char *hid_types[] = {"Device", "Pointer", "Mouse", "Device", "Joystick",
+				"Gamepad", "Keyboard", "Keypad", "Multi-Axis Controller"};
+/*
+ * Module parameters.
+ */
+
+static unsigned int hid_mousepoll_interval;
+module_param_named(mousepoll, hid_mousepoll_interval, uint, 0644);
+MODULE_PARM_DESC(mousepoll, "Polling interval of mice");
+
+/* Quirks specified at module load time */
+static char *quirks_param[MAX_USBHID_BOOT_QUIRKS] = { [ 0 ... (MAX_USBHID_BOOT_QUIRKS - 1) ] = NULL };
+module_param_array_named(quirks, quirks_param, charp, NULL, 0444);
+MODULE_PARM_DESC(quirks, "Add/modify USB HID quirks by specifying "
+		" quirks=vendorID:productID:quirks"
+		" where vendorID, productID, and quirks are all in"
+		" 0x-prefixed hex");
+/*
+ * Input submission and I/O error handler.
+ */
+
+static void hid_io_error(struct hid_device *hid);
+
+/* Start up the input URB */
+static int hid_start_in(struct hid_device *hid)
+{
+	unsigned long flags;
+	int rc = 0;
+	struct usbhid_device *usbhid = hid->driver_data;
+
+	spin_lock_irqsave(&usbhid->inlock, flags);
+	if (hid->open > 0 && !test_bit(HID_SUSPENDED, &usbhid->iofl) &&
+			!test_and_set_bit(HID_IN_RUNNING, &usbhid->iofl)) {
+		rc = usb_submit_urb(usbhid->urbin, GFP_ATOMIC);
+		if (rc != 0)
+			clear_bit(HID_IN_RUNNING, &usbhid->iofl);
+	}
+	spin_unlock_irqrestore(&usbhid->inlock, flags);
+	return rc;
+}
+
+/* I/O retry timer routine */
+static void hid_retry_timeout(unsigned long _hid)
+{
+	struct hid_device *hid = (struct hid_device *) _hid;
+	struct usbhid_device *usbhid = hid->driver_data;
+
+	dev_dbg(&usbhid->intf->dev, "retrying intr urb\n");
+	if (hid_start_in(hid))
+		hid_io_error(hid);
+}
+
+/* Workqueue routine to reset the device or clear a halt */
+static void hid_reset(struct work_struct *work)
+{
+	struct usbhid_device *usbhid =
+		container_of(work, struct usbhid_device, reset_work);
+	struct hid_device *hid = usbhid->hid;
+	int rc_lock, rc = 0;
+
+	if (test_bit(HID_CLEAR_HALT, &usbhid->iofl)) {
+		dev_dbg(&usbhid->intf->dev, "clear halt\n");
+		rc = usb_clear_halt(hid_to_usb_dev(hid), usbhid->urbin->pipe);
+		clear_bit(HID_CLEAR_HALT, &usbhid->iofl);
+		hid_start_in(hid);
+	}
+
+	else if (test_bit(HID_RESET_PENDING, &usbhid->iofl)) {
+		dev_dbg(&usbhid->intf->dev, "resetting device\n");
+		rc = rc_lock = usb_lock_device_for_reset(hid_to_usb_dev(hid), usbhid->intf);
+		if (rc_lock >= 0) {
+			rc = usb_reset_composite_device(hid_to_usb_dev(hid), usbhid->intf);
+			if (rc_lock)
+				usb_unlock_device(hid_to_usb_dev(hid));
+		}
+		clear_bit(HID_RESET_PENDING, &usbhid->iofl);
+	}
+
+	switch (rc) {
+	case 0:
+		if (!test_bit(HID_IN_RUNNING, &usbhid->iofl))
+			hid_io_error(hid);
+		break;
+	default:
+		err("can't reset device, %s-%s/input%d, status %d",
+				hid_to_usb_dev(hid)->bus->bus_name,
+				hid_to_usb_dev(hid)->devpath,
+				usbhid->ifnum, rc);
+		/* FALLTHROUGH */
+	case -EHOSTUNREACH:
+	case -ENODEV:
+	case -EINTR:
+		break;
+	}
+}
+
+/* Main I/O error handler */
+static void hid_io_error(struct hid_device *hid)
+{
+	unsigned long flags;
+	struct usbhid_device *usbhid = hid->driver_data;
+
+	spin_lock_irqsave(&usbhid->inlock, flags);
+
+	/* Stop when disconnected */
+	if (usb_get_intfdata(usbhid->intf) == NULL)
+		goto done;
+
+	/* If it has been a while since the last error, we'll assume
+	 * this a brand new error and reset the retry timeout. */
+	if (time_after(jiffies, usbhid->stop_retry + HZ/2))
+		usbhid->retry_delay = 0;
+
+	/* When an error occurs, retry at increasing intervals */
+	if (usbhid->retry_delay == 0) {
+		usbhid->retry_delay = 13;	/* Then 26, 52, 104, 104, ... */
+		usbhid->stop_retry = jiffies + msecs_to_jiffies(1000);
+	} else if (usbhid->retry_delay < 100)
+		usbhid->retry_delay *= 2;
+
+	if (time_after(jiffies, usbhid->stop_retry)) {
+
+		/* Retries failed, so do a port reset */
+		if (!test_and_set_bit(HID_RESET_PENDING, &usbhid->iofl)) {
+			schedule_work(&usbhid->reset_work);
+			goto done;
+		}
+	}
+
+	mod_timer(&usbhid->io_retry,
+			jiffies + msecs_to_jiffies(usbhid->retry_delay));
+done:
+	spin_unlock_irqrestore(&usbhid->inlock, flags);
+}
+
+/*
+ * Input interrupt completion handler.
+ */
+
+static void hid_irq_in(struct urb *urb)
+{
+	struct hid_device	*hid = urb->context;
+	struct usbhid_device 	*usbhid = hid->driver_data;
+	int			status;
+
+	switch (urb->status) {
+		case 0:			/* success */
+			usbhid->retry_delay = 0;
+			hid_input_report(urb->context, HID_INPUT_REPORT,
+					 urb->transfer_buffer,
+					 urb->actual_length, 1);
+			break;
+		case -EPIPE:		/* stall */
+			clear_bit(HID_IN_RUNNING, &usbhid->iofl);
+			set_bit(HID_CLEAR_HALT, &usbhid->iofl);
+			schedule_work(&usbhid->reset_work);
+			return;
+		case -ECONNRESET:	/* unlink */
+		case -ENOENT:
+		case -ESHUTDOWN:	/* unplug */
+			clear_bit(HID_IN_RUNNING, &usbhid->iofl);
+			return;
+		case -EILSEQ:		/* protocol error or unplug */
+		case -EPROTO:		/* protocol error or unplug */
+		case -ETIME:		/* protocol error or unplug */
+		case -ETIMEDOUT:	/* Should never happen, but... */
+			clear_bit(HID_IN_RUNNING, &usbhid->iofl);
+			hid_io_error(hid);
+			return;
+		default:		/* error */
+			warn("input irq status %d received", urb->status);
+	}
+
+	status = usb_submit_urb(urb, GFP_ATOMIC);
+	if (status) {
+		clear_bit(HID_IN_RUNNING, &usbhid->iofl);
+		if (status != -EPERM) {
+			err("can't resubmit intr, %s-%s/input%d, status %d",
+					hid_to_usb_dev(hid)->bus->bus_name,
+					hid_to_usb_dev(hid)->devpath,
+					usbhid->ifnum, status);
+			hid_io_error(hid);
+		}
+	}
+}
+
+static int hid_submit_out(struct hid_device *hid)
+{
+	struct hid_report *report;
+	struct usbhid_device *usbhid = hid->driver_data;
+
+	report = usbhid->out[usbhid->outtail];
+
+	hid_output_report(report, usbhid->outbuf);
+	usbhid->urbout->transfer_buffer_length = ((report->size - 1) >> 3) + 1 + (report->id > 0);
+	usbhid->urbout->dev = hid_to_usb_dev(hid);
+
+	dbg("submitting out urb");
+
+	if (usb_submit_urb(usbhid->urbout, GFP_ATOMIC)) {
+		err("usb_submit_urb(out) failed");
+		return -1;
+	}
+
+	return 0;
+}
+
+static int hid_submit_ctrl(struct hid_device *hid)
+{
+	struct hid_report *report;
+	unsigned char dir;
+	int len;
+	struct usbhid_device *usbhid = hid->driver_data;
+
+	report = usbhid->ctrl[usbhid->ctrltail].report;
+	dir = usbhid->ctrl[usbhid->ctrltail].dir;
+
+	len = ((report->size - 1) >> 3) + 1 + (report->id > 0);
+	if (dir == USB_DIR_OUT) {
+		hid_output_report(report, usbhid->ctrlbuf);
+		usbhid->urbctrl->pipe = usb_sndctrlpipe(hid_to_usb_dev(hid), 0);
+		usbhid->urbctrl->transfer_buffer_length = len;
+	} else {
+		int maxpacket, padlen;
+
+		usbhid->urbctrl->pipe = usb_rcvctrlpipe(hid_to_usb_dev(hid), 0);
+		maxpacket = usb_maxpacket(hid_to_usb_dev(hid), usbhid->urbctrl->pipe, 0);
+		if (maxpacket > 0) {
+			padlen = (len + maxpacket - 1) / maxpacket;
+			padlen *= maxpacket;
+			if (padlen > usbhid->bufsize)
+				padlen = usbhid->bufsize;
+		} else
+			padlen = 0;
+		usbhid->urbctrl->transfer_buffer_length = padlen;
+	}
+	usbhid->urbctrl->dev = hid_to_usb_dev(hid);
+
+	usbhid->cr->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE | dir;
+	usbhid->cr->bRequest = (dir == USB_DIR_OUT) ? HID_REQ_SET_REPORT : HID_REQ_GET_REPORT;
+	usbhid->cr->wValue = cpu_to_le16(((report->type + 1) << 8) | report->id);
+	usbhid->cr->wIndex = cpu_to_le16(usbhid->ifnum);
+	usbhid->cr->wLength = cpu_to_le16(len);
+
+	dbg("submitting ctrl urb: %s wValue=0x%04x wIndex=0x%04x wLength=%u",
+		usbhid->cr->bRequest == HID_REQ_SET_REPORT ? "Set_Report" : "Get_Report",
+		usbhid->cr->wValue, usbhid->cr->wIndex, usbhid->cr->wLength);
+
+	if (usb_submit_urb(usbhid->urbctrl, GFP_ATOMIC)) {
+		err("usb_submit_urb(ctrl) failed");
+		return -1;
+	}
+
+	return 0;
+}
+
+/*
+ * Output interrupt completion handler.
+ */
+
+static void hid_irq_out(struct urb *urb)
+{
+	struct hid_device *hid = urb->context;
+	struct usbhid_device *usbhid = hid->driver_data;
+	unsigned long flags;
+	int unplug = 0;
+
+	switch (urb->status) {
+		case 0:			/* success */
+			break;
+		case -ESHUTDOWN:	/* unplug */
+			unplug = 1;
+		case -EILSEQ:		/* protocol error or unplug */
+		case -EPROTO:		/* protocol error or unplug */
+		case -ECONNRESET:	/* unlink */
+		case -ENOENT:
+			break;
+		default:		/* error */
+			warn("output irq status %d received", urb->status);
+	}
+
+	spin_lock_irqsave(&usbhid->outlock, flags);
+
+	if (unplug)
+		usbhid->outtail = usbhid->outhead;
+	else
+		usbhid->outtail = (usbhid->outtail + 1) & (HID_OUTPUT_FIFO_SIZE - 1);
+
+	if (usbhid->outhead != usbhid->outtail) {
+		if (hid_submit_out(hid)) {
+			clear_bit(HID_OUT_RUNNING, &usbhid->iofl);
+			wake_up(&hid->wait);
+		}
+		spin_unlock_irqrestore(&usbhid->outlock, flags);
+		return;
+	}
+
+	clear_bit(HID_OUT_RUNNING, &usbhid->iofl);
+	spin_unlock_irqrestore(&usbhid->outlock, flags);
+	wake_up(&hid->wait);
+}
+
+/*
+ * Control pipe completion handler.
+ */
+
+static void hid_ctrl(struct urb *urb)
+{
+	struct hid_device *hid = urb->context;
+	struct usbhid_device *usbhid = hid->driver_data;
+	unsigned long flags;
+	int unplug = 0;
+
+	spin_lock_irqsave(&usbhid->ctrllock, flags);
+
+	switch (urb->status) {
+		case 0:			/* success */
+			if (usbhid->ctrl[usbhid->ctrltail].dir == USB_DIR_IN)
+				hid_input_report(urb->context, usbhid->ctrl[usbhid->ctrltail].report->type,
+						urb->transfer_buffer, urb->actual_length, 0);
+			break;
+		case -ESHUTDOWN:	/* unplug */
+			unplug = 1;
+		case -EILSEQ:		/* protocol error or unplug */
+		case -EPROTO:		/* protocol error or unplug */
+		case -ECONNRESET:	/* unlink */
+		case -ENOENT:
+		case -EPIPE:		/* report not available */
+			break;
+		default:		/* error */
+			warn("ctrl urb status %d received", urb->status);
+	}
+
+	if (unplug)
+		usbhid->ctrltail = usbhid->ctrlhead;
+	else
+		usbhid->ctrltail = (usbhid->ctrltail + 1) & (HID_CONTROL_FIFO_SIZE - 1);
+
+	if (usbhid->ctrlhead != usbhid->ctrltail) {
+		if (hid_submit_ctrl(hid)) {
+			clear_bit(HID_CTRL_RUNNING, &usbhid->iofl);
+			wake_up(&hid->wait);
+		}
+		spin_unlock_irqrestore(&usbhid->ctrllock, flags);
+		return;
+	}
+
+	clear_bit(HID_CTRL_RUNNING, &usbhid->iofl);
+	spin_unlock_irqrestore(&usbhid->ctrllock, flags);
+	wake_up(&hid->wait);
+}
+
+void usbhid_submit_report(struct hid_device *hid, struct hid_report *report, unsigned char dir)
+{
+	int head;
+	unsigned long flags;
+	struct usbhid_device *usbhid = hid->driver_data;
+
+	if ((hid->quirks & HID_QUIRK_NOGET) && dir == USB_DIR_IN)
+		return;
+
+	if (usbhid->urbout && dir == USB_DIR_OUT && report->type == HID_OUTPUT_REPORT) {
+
+		spin_lock_irqsave(&usbhid->outlock, flags);
+
+		if ((head = (usbhid->outhead + 1) & (HID_OUTPUT_FIFO_SIZE - 1)) == usbhid->outtail) {
+			spin_unlock_irqrestore(&usbhid->outlock, flags);
+			warn("output queue full");
+			return;
+		}
+
+		usbhid->out[usbhid->outhead] = report;
+		usbhid->outhead = head;
+
+		if (!test_and_set_bit(HID_OUT_RUNNING, &usbhid->iofl))
+			if (hid_submit_out(hid))
+				clear_bit(HID_OUT_RUNNING, &usbhid->iofl);
+
+		spin_unlock_irqrestore(&usbhid->outlock, flags);
+		return;
+	}
+
+	spin_lock_irqsave(&usbhid->ctrllock, flags);
+
+	if ((head = (usbhid->ctrlhead + 1) & (HID_CONTROL_FIFO_SIZE - 1)) == usbhid->ctrltail) {
+		spin_unlock_irqrestore(&usbhid->ctrllock, flags);
+		warn("control queue full");
+		return;
+	}
+
+	usbhid->ctrl[usbhid->ctrlhead].report = report;
+	usbhid->ctrl[usbhid->ctrlhead].dir = dir;
+	usbhid->ctrlhead = head;
+
+	if (!test_and_set_bit(HID_CTRL_RUNNING, &usbhid->iofl))
+		if (hid_submit_ctrl(hid))
+			clear_bit(HID_CTRL_RUNNING, &usbhid->iofl);
+
+	spin_unlock_irqrestore(&usbhid->ctrllock, flags);
+}
+
+static int usb_hidinput_input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
+{
+	struct hid_device *hid = dev->private;
+	struct hid_field *field;
+	int offset;
+
+	if (type == EV_FF)
+		return input_ff_event(dev, type, code, value);
+
+	if (type != EV_LED)
+		return -1;
+
+	if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) {
+		warn("event field not found");
+		return -1;
+	}
+
+	hid_set_field(field, offset, value);
+	usbhid_submit_report(hid, field->report, USB_DIR_OUT);
+
+	return 0;
+}
+
+int usbhid_wait_io(struct hid_device *hid)
+{
+	struct usbhid_device *usbhid = hid->driver_data;
+
+	if (!wait_event_timeout(hid->wait, (!test_bit(HID_CTRL_RUNNING, &usbhid->iofl) &&
+					!test_bit(HID_OUT_RUNNING, &usbhid->iofl)),
+					10*HZ)) {
+		dbg("timeout waiting for ctrl or out queue to clear");
+		return -1;
+	}
+
+	return 0;
+}
+
+static int hid_set_idle(struct usb_device *dev, int ifnum, int report, int idle)
+{
+	return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
+		HID_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE, (idle << 8) | report,
+		ifnum, NULL, 0, USB_CTRL_SET_TIMEOUT);
+}
+
+static int hid_get_class_descriptor(struct usb_device *dev, int ifnum,
+		unsigned char type, void *buf, int size)
+{
+	int result, retries = 4;
+
+	memset(buf, 0, size);
+
+	do {
+		result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
+				USB_REQ_GET_DESCRIPTOR, USB_RECIP_INTERFACE | USB_DIR_IN,
+				(type << 8), ifnum, buf, size, USB_CTRL_GET_TIMEOUT);
+		retries--;
+	} while (result < size && retries);
+	return result;
+}
+
+int usbhid_open(struct hid_device *hid)
+{
+	++hid->open;
+	if (hid_start_in(hid))
+		hid_io_error(hid);
+	return 0;
+}
+
+void usbhid_close(struct hid_device *hid)
+{
+	struct usbhid_device *usbhid = hid->driver_data;
+
+	if (!--hid->open)
+		usb_kill_urb(usbhid->urbin);
+}
+
+/*
+ * Initialize all reports
+ */
+
+void usbhid_init_reports(struct hid_device *hid)
+{
+	struct hid_report *report;
+	struct usbhid_device *usbhid = hid->driver_data;
+	int err, ret;
+
+	list_for_each_entry(report, &hid->report_enum[HID_INPUT_REPORT].report_list, list)
+		usbhid_submit_report(hid, report, USB_DIR_IN);
+
+	list_for_each_entry(report, &hid->report_enum[HID_FEATURE_REPORT].report_list, list)
+		usbhid_submit_report(hid, report, USB_DIR_IN);
+
+	err = 0;
+	ret = usbhid_wait_io(hid);
+	while (ret) {
+		err |= ret;
+		if (test_bit(HID_CTRL_RUNNING, &usbhid->iofl))
+			usb_kill_urb(usbhid->urbctrl);
+		if (test_bit(HID_OUT_RUNNING, &usbhid->iofl))
+			usb_kill_urb(usbhid->urbout);
+		ret = usbhid_wait_io(hid);
+	}
+
+	if (err)
+		warn("timeout initializing reports");
+}
+
+/*
+ * Reset LEDs which BIOS might have left on. For now, just NumLock (0x01).
+ */
+static int hid_find_field_early(struct hid_device *hid, unsigned int page,
+    unsigned int hid_code, struct hid_field **pfield)
+{
+	struct hid_report *report;
+	struct hid_field *field;
+	struct hid_usage *usage;
+	int i, j;
+
+	list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
+		for (i = 0; i < report->maxfield; i++) {
+			field = report->field[i];
+			for (j = 0; j < field->maxusage; j++) {
+				usage = &field->usage[j];
+				if ((usage->hid & HID_USAGE_PAGE) == page &&
+				    (usage->hid & 0xFFFF) == hid_code) {
+					*pfield = field;
+					return j;
+				}
+			}
+		}
+	}
+	return -1;
+}
+
+static void usbhid_set_leds(struct hid_device *hid)
+{
+	struct hid_field *field;
+	int offset;
+
+	if ((offset = hid_find_field_early(hid, HID_UP_LED, 0x01, &field)) != -1) {
+		hid_set_field(field, offset, 0);
+		usbhid_submit_report(hid, field->report, USB_DIR_OUT);
+	}
+}
+
+/*
+ * Traverse the supplied list of reports and find the longest
+ */
+static void hid_find_max_report(struct hid_device *hid, unsigned int type, int *max)
+{
+	struct hid_report *report;
+	int size;
+
+	list_for_each_entry(report, &hid->report_enum[type].report_list, list) {
+		size = ((report->size - 1) >> 3) + 1;
+		if (type == HID_INPUT_REPORT && hid->report_enum[type].numbered)
+			size++;
+		if (*max < size)
+			*max = size;
+	}
+}
+
+static int hid_alloc_buffers(struct usb_device *dev, struct hid_device *hid)
+{
+	struct usbhid_device *usbhid = hid->driver_data;
+
+	if (!(usbhid->inbuf = usb_buffer_alloc(dev, usbhid->bufsize, GFP_ATOMIC, &usbhid->inbuf_dma)))
+		return -1;
+	if (!(usbhid->outbuf = usb_buffer_alloc(dev, usbhid->bufsize, GFP_ATOMIC, &usbhid->outbuf_dma)))
+		return -1;
+	if (!(usbhid->cr = usb_buffer_alloc(dev, sizeof(*(usbhid->cr)), GFP_ATOMIC, &usbhid->cr_dma)))
+		return -1;
+	if (!(usbhid->ctrlbuf = usb_buffer_alloc(dev, usbhid->bufsize, GFP_ATOMIC, &usbhid->ctrlbuf_dma)))
+		return -1;
+
+	return 0;
+}
+
+static void hid_free_buffers(struct usb_device *dev, struct hid_device *hid)
+{
+	struct usbhid_device *usbhid = hid->driver_data;
+
+	if (usbhid->inbuf)
+		usb_buffer_free(dev, usbhid->bufsize, usbhid->inbuf, usbhid->inbuf_dma);
+	if (usbhid->outbuf)
+		usb_buffer_free(dev, usbhid->bufsize, usbhid->outbuf, usbhid->outbuf_dma);
+	if (usbhid->cr)
+		usb_buffer_free(dev, sizeof(*(usbhid->cr)), usbhid->cr, usbhid->cr_dma);
+	if (usbhid->ctrlbuf)
+		usb_buffer_free(dev, usbhid->bufsize, usbhid->ctrlbuf, usbhid->ctrlbuf_dma);
+}
+
+/*
+ * Cherry Cymotion keyboard have an invalid HID report descriptor,
+ * that needs fixing before we can parse it.
+ */
+
+static void hid_fixup_cymotion_descriptor(char *rdesc, int rsize)
+{
+	if (rsize >= 17 && rdesc[11] == 0x3c && rdesc[12] == 0x02) {
+		info("Fixing up Cherry Cymotion report descriptor");
+		rdesc[11] = rdesc[16] = 0xff;
+		rdesc[12] = rdesc[17] = 0x03;
+	}
+}
+
+/*
+ * Sending HID_REQ_GET_REPORT changes the operation mode of the ps3 controller
+ * to "operational".  Without this, the ps3 controller will not report any
+ * events.
+ */
+static void hid_fixup_sony_ps3_controller(struct usb_device *dev, int ifnum)
+{
+	int result;
+	char *buf = kmalloc(18, GFP_KERNEL);
+
+	if (!buf)
+		return;
+
+	result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
+				 HID_REQ_GET_REPORT,
+				 USB_DIR_IN | USB_TYPE_CLASS |
+				 USB_RECIP_INTERFACE,
+				 (3 << 8) | 0xf2, ifnum, buf, 17,
+				 USB_CTRL_GET_TIMEOUT);
+
+	if (result < 0)
+		err("%s failed: %d\n", __func__, result);
+
+	kfree(buf);
+}
+
+/*
+ * Certain Logitech keyboards send in report #3 keys which are far
+ * above the logical maximum described in descriptor. This extends
+ * the original value of 0x28c of logical maximum to 0x104d
+ */
+static void hid_fixup_logitech_descriptor(unsigned char *rdesc, int rsize)
+{
+	if (rsize >= 90 && rdesc[83] == 0x26
+			&& rdesc[84] == 0x8c
+			&& rdesc[85] == 0x02) {
+		info("Fixing up Logitech keyboard report descriptor");
+		rdesc[84] = rdesc[89] = 0x4d;
+		rdesc[85] = rdesc[90] = 0x10;
+	}
+}
+
+static struct hid_device *usb_hid_configure(struct usb_interface *intf)
+{
+	struct usb_host_interface *interface = intf->cur_altsetting;
+	struct usb_device *dev = interface_to_usbdev (intf);
+	struct hid_descriptor *hdesc;
+	struct hid_device *hid;
+	u32 quirks = 0;
+	unsigned rsize = 0;
+	char *rdesc;
+	int n, len, insize = 0;
+	struct usbhid_device *usbhid;
+
+	quirks = usbhid_lookup_quirk(le16_to_cpu(dev->descriptor.idVendor),
+			le16_to_cpu(dev->descriptor.idProduct));
+
+	/* Many keyboards and mice don't like to be polled for reports,
+	 * so we will always set the HID_QUIRK_NOGET flag for them. */
+	if (interface->desc.bInterfaceSubClass == USB_INTERFACE_SUBCLASS_BOOT) {
+		if (interface->desc.bInterfaceProtocol == USB_INTERFACE_PROTOCOL_KEYBOARD ||
+			interface->desc.bInterfaceProtocol == USB_INTERFACE_PROTOCOL_MOUSE)
+				quirks |= HID_QUIRK_NOGET;
+	}
+
+	if (quirks & HID_QUIRK_IGNORE)
+		return NULL;
+
+	if ((quirks & HID_QUIRK_IGNORE_MOUSE) &&
+		(interface->desc.bInterfaceProtocol == USB_INTERFACE_PROTOCOL_MOUSE))
+			return NULL;
+
+
+	if (usb_get_extra_descriptor(interface, HID_DT_HID, &hdesc) &&
+	    (!interface->desc.bNumEndpoints ||
+	     usb_get_extra_descriptor(&interface->endpoint[0], HID_DT_HID, &hdesc))) {
+		dbg("class descriptor not present\n");
+		return NULL;
+	}
+
+	for (n = 0; n < hdesc->bNumDescriptors; n++)
+		if (hdesc->desc[n].bDescriptorType == HID_DT_REPORT)
+			rsize = le16_to_cpu(hdesc->desc[n].wDescriptorLength);
+
+	if (!rsize || rsize > HID_MAX_DESCRIPTOR_SIZE) {
+		dbg("weird size of report descriptor (%u)", rsize);
+		return NULL;
+	}
+
+	if (!(rdesc = kmalloc(rsize, GFP_KERNEL))) {
+		dbg("couldn't allocate rdesc memory");
+		return NULL;
+	}
+
+	hid_set_idle(dev, interface->desc.bInterfaceNumber, 0, 0);
+
+	if ((n = hid_get_class_descriptor(dev, interface->desc.bInterfaceNumber, HID_DT_REPORT, rdesc, rsize)) < 0) {
+		dbg("reading report descriptor failed");
+		kfree(rdesc);
+		return NULL;
+	}
+
+	if ((quirks & HID_QUIRK_CYMOTION))
+		hid_fixup_cymotion_descriptor(rdesc, rsize);
+
+	if (quirks & HID_QUIRK_LOGITECH_DESCRIPTOR)
+		hid_fixup_logitech_descriptor(rdesc, rsize);
+
+#ifdef CONFIG_HID_DEBUG
+	printk(KERN_DEBUG __FILE__ ": report descriptor (size %u, read %d) = ", rsize, n);
+	for (n = 0; n < rsize; n++)
+		printk(" %02x", (unsigned char) rdesc[n]);
+	printk("\n");
+#endif
+
+	if (!(hid = hid_parse_report(rdesc, n))) {
+		dbg("parsing report descriptor failed");
+		kfree(rdesc);
+		return NULL;
+	}
+
+	kfree(rdesc);
+	hid->quirks = quirks;
+
+	if (!(usbhid = kzalloc(sizeof(struct usbhid_device), GFP_KERNEL)))
+		goto fail;
+
+	hid->driver_data = usbhid;
+	usbhid->hid = hid;
+
+	usbhid->bufsize = HID_MIN_BUFFER_SIZE;
+	hid_find_max_report(hid, HID_INPUT_REPORT, &usbhid->bufsize);
+	hid_find_max_report(hid, HID_OUTPUT_REPORT, &usbhid->bufsize);
+	hid_find_max_report(hid, HID_FEATURE_REPORT, &usbhid->bufsize);
+
+	if (usbhid->bufsize > HID_MAX_BUFFER_SIZE)
+		usbhid->bufsize = HID_MAX_BUFFER_SIZE;
+
+	hid_find_max_report(hid, HID_INPUT_REPORT, &insize);
+
+	if (insize > HID_MAX_BUFFER_SIZE)
+		insize = HID_MAX_BUFFER_SIZE;
+
+	if (hid_alloc_buffers(dev, hid)) {
+		hid_free_buffers(dev, hid);
+		goto fail;
+	}
+
+	for (n = 0; n < interface->desc.bNumEndpoints; n++) {
+
+		struct usb_endpoint_descriptor *endpoint;
+		int pipe;
+		int interval;
+
+		endpoint = &interface->endpoint[n].desc;
+		if ((endpoint->bmAttributes & 3) != 3)		/* Not an interrupt endpoint */
+			continue;
+
+		interval = endpoint->bInterval;
+
+		/* Change the polling interval of mice. */
+		if (hid->collection->usage == HID_GD_MOUSE && hid_mousepoll_interval > 0)
+			interval = hid_mousepoll_interval;
+
+		if (usb_endpoint_dir_in(endpoint)) {
+			if (usbhid->urbin)
+				continue;
+			if (!(usbhid->urbin = usb_alloc_urb(0, GFP_KERNEL)))
+				goto fail;
+			pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
+			usb_fill_int_urb(usbhid->urbin, dev, pipe, usbhid->inbuf, insize,
+					 hid_irq_in, hid, interval);
+			usbhid->urbin->transfer_dma = usbhid->inbuf_dma;
+			usbhid->urbin->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+		} else {
+			if (usbhid->urbout)
+				continue;
+			if (!(usbhid->urbout = usb_alloc_urb(0, GFP_KERNEL)))
+				goto fail;
+			pipe = usb_sndintpipe(dev, endpoint->bEndpointAddress);
+			usb_fill_int_urb(usbhid->urbout, dev, pipe, usbhid->outbuf, 0,
+					 hid_irq_out, hid, interval);
+			usbhid->urbout->transfer_dma = usbhid->outbuf_dma;
+			usbhid->urbout->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+		}
+	}
+
+	if (!usbhid->urbin) {
+		err("couldn't find an input interrupt endpoint");
+		goto fail;
+	}
+
+	init_waitqueue_head(&hid->wait);
+
+	INIT_WORK(&usbhid->reset_work, hid_reset);
+	setup_timer(&usbhid->io_retry, hid_retry_timeout, (unsigned long) hid);
+
+	spin_lock_init(&usbhid->inlock);
+	spin_lock_init(&usbhid->outlock);
+	spin_lock_init(&usbhid->ctrllock);
+
+	hid->version = le16_to_cpu(hdesc->bcdHID);
+	hid->country = hdesc->bCountryCode;
+	hid->dev = &intf->dev;
+	usbhid->intf = intf;
+	usbhid->ifnum = interface->desc.bInterfaceNumber;
+
+	hid->name[0] = 0;
+
+	if (dev->manufacturer)
+		strlcpy(hid->name, dev->manufacturer, sizeof(hid->name));
+
+	if (dev->product) {
+		if (dev->manufacturer)
+			strlcat(hid->name, " ", sizeof(hid->name));
+		strlcat(hid->name, dev->product, sizeof(hid->name));
+	}
+
+	if (!strlen(hid->name))
+		snprintf(hid->name, sizeof(hid->name), "HID %04x:%04x",
+			 le16_to_cpu(dev->descriptor.idVendor),
+			 le16_to_cpu(dev->descriptor.idProduct));
+
+	hid->bus = BUS_USB;
+	hid->vendor = le16_to_cpu(dev->descriptor.idVendor);
+	hid->product = le16_to_cpu(dev->descriptor.idProduct);
+
+	usb_make_path(dev, hid->phys, sizeof(hid->phys));
+	strlcat(hid->phys, "/input", sizeof(hid->phys));
+	len = strlen(hid->phys);
+	if (len < sizeof(hid->phys) - 1)
+		snprintf(hid->phys + len, sizeof(hid->phys) - len,
+			 "%d", intf->altsetting[0].desc.bInterfaceNumber);
+
+	if (usb_string(dev, dev->descriptor.iSerialNumber, hid->uniq, 64) <= 0)
+		hid->uniq[0] = 0;
+
+	usbhid->urbctrl = usb_alloc_urb(0, GFP_KERNEL);
+	if (!usbhid->urbctrl)
+		goto fail;
+
+	usb_fill_control_urb(usbhid->urbctrl, dev, 0, (void *) usbhid->cr,
+			     usbhid->ctrlbuf, 1, hid_ctrl, hid);
+	usbhid->urbctrl->setup_dma = usbhid->cr_dma;
+	usbhid->urbctrl->transfer_dma = usbhid->ctrlbuf_dma;
+	usbhid->urbctrl->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP | URB_NO_SETUP_DMA_MAP);
+	hid->hidinput_input_event = usb_hidinput_input_event;
+	hid->hid_open = usbhid_open;
+	hid->hid_close = usbhid_close;
+#ifdef CONFIG_USB_HIDDEV
+	hid->hiddev_hid_event = hiddev_hid_event;
+	hid->hiddev_report_event = hiddev_report_event;
+#endif
+	return hid;
+
+fail:
+	usb_free_urb(usbhid->urbin);
+	usb_free_urb(usbhid->urbout);
+	usb_free_urb(usbhid->urbctrl);
+	hid_free_buffers(dev, hid);
+	hid_free_device(hid);
+
+	return NULL;
+}
+
+static void hid_disconnect(struct usb_interface *intf)
+{
+	struct hid_device *hid = usb_get_intfdata (intf);
+	struct usbhid_device *usbhid;
+
+	if (!hid)
+		return;
+
+	usbhid = hid->driver_data;
+
+	spin_lock_irq(&usbhid->inlock);	/* Sync with error handler */
+	usb_set_intfdata(intf, NULL);
+	spin_unlock_irq(&usbhid->inlock);
+	usb_kill_urb(usbhid->urbin);
+	usb_kill_urb(usbhid->urbout);
+	usb_kill_urb(usbhid->urbctrl);
+
+	del_timer_sync(&usbhid->io_retry);
+	flush_scheduled_work();
+
+	if (hid->claimed & HID_CLAIMED_INPUT)
+		hidinput_disconnect(hid);
+	if (hid->claimed & HID_CLAIMED_HIDDEV)
+		hiddev_disconnect(hid);
+
+	usb_free_urb(usbhid->urbin);
+	usb_free_urb(usbhid->urbctrl);
+	usb_free_urb(usbhid->urbout);
+
+	hid_free_buffers(hid_to_usb_dev(hid), hid);
+	hid_free_device(hid);
+}
+
+static int hid_probe(struct usb_interface *intf, const struct usb_device_id *id)
+{
+	struct hid_device *hid;
+	char path[64];
+	int i;
+	char *c;
+
+	dbg("HID probe called for ifnum %d",
+			intf->altsetting->desc.bInterfaceNumber);
+
+	if (!(hid = usb_hid_configure(intf)))
+		return -ENODEV;
+
+	usbhid_init_reports(hid);
+	hid_dump_device(hid);
+	if (hid->quirks & HID_QUIRK_RESET_LEDS)
+		usbhid_set_leds(hid);
+
+	if (!hidinput_connect(hid))
+		hid->claimed |= HID_CLAIMED_INPUT;
+	if (!hiddev_connect(hid))
+		hid->claimed |= HID_CLAIMED_HIDDEV;
+
+	usb_set_intfdata(intf, hid);
+
+	if (!hid->claimed) {
+		printk ("HID device not claimed by input or hiddev\n");
+		hid_disconnect(intf);
+		return -ENODEV;
+	}
+
+	if ((hid->claimed & HID_CLAIMED_INPUT))
+		hid_ff_init(hid);
+
+	if (hid->quirks & HID_QUIRK_SONY_PS3_CONTROLLER)
+		hid_fixup_sony_ps3_controller(interface_to_usbdev(intf),
+			intf->cur_altsetting->desc.bInterfaceNumber);
+
+	printk(KERN_INFO);
+
+	if (hid->claimed & HID_CLAIMED_INPUT)
+		printk("input");
+	if (hid->claimed == (HID_CLAIMED_INPUT | HID_CLAIMED_HIDDEV))
+		printk(",");
+	if (hid->claimed & HID_CLAIMED_HIDDEV)
+		printk("hiddev%d", hid->minor);
+
+	c = "Device";
+	for (i = 0; i < hid->maxcollection; i++) {
+		if (hid->collection[i].type == HID_COLLECTION_APPLICATION &&
+		    (hid->collection[i].usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
+		    (hid->collection[i].usage & 0xffff) < ARRAY_SIZE(hid_types)) {
+			c = hid_types[hid->collection[i].usage & 0xffff];
+			break;
+		}
+	}
+
+	usb_make_path(interface_to_usbdev(intf), path, 63);
+
+	printk(": USB HID v%x.%02x %s [%s] on %s\n",
+		hid->version >> 8, hid->version & 0xff, c, hid->name, path);
+
+	return 0;
+}
+
+static int hid_suspend(struct usb_interface *intf, pm_message_t message)
+{
+	struct hid_device *hid = usb_get_intfdata (intf);
+	struct usbhid_device *usbhid = hid->driver_data;
+
+	spin_lock_irq(&usbhid->inlock);	/* Sync with error handler */
+	set_bit(HID_SUSPENDED, &usbhid->iofl);
+	spin_unlock_irq(&usbhid->inlock);
+	del_timer(&usbhid->io_retry);
+	usb_kill_urb(usbhid->urbin);
+	dev_dbg(&intf->dev, "suspend\n");
+	return 0;
+}
+
+static int hid_resume(struct usb_interface *intf)
+{
+	struct hid_device *hid = usb_get_intfdata (intf);
+	struct usbhid_device *usbhid = hid->driver_data;
+	int status;
+
+	clear_bit(HID_SUSPENDED, &usbhid->iofl);
+	usbhid->retry_delay = 0;
+	status = hid_start_in(hid);
+	dev_dbg(&intf->dev, "resume status %d\n", status);
+	return status;
+}
+
+/* Treat USB reset pretty much the same as suspend/resume */
+static void hid_pre_reset(struct usb_interface *intf)
+{
+	/* FIXME: What if the interface is already suspended? */
+	hid_suspend(intf, PMSG_ON);
+}
+
+static void hid_post_reset(struct usb_interface *intf)
+{
+	struct usb_device *dev = interface_to_usbdev (intf);
+
+	hid_set_idle(dev, intf->cur_altsetting->desc.bInterfaceNumber, 0, 0);
+	/* FIXME: Any more reinitialization needed? */
+
+	hid_resume(intf);
+}
+
+static struct usb_device_id hid_usb_ids [] = {
+	{ .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS,
+		.bInterfaceClass = USB_INTERFACE_CLASS_HID },
+	{ }						/* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE (usb, hid_usb_ids);
+
+static struct usb_driver hid_driver = {
+	.name =		"usbhid",
+	.probe =	hid_probe,
+	.disconnect =	hid_disconnect,
+	.suspend =	hid_suspend,
+	.resume =	hid_resume,
+	.pre_reset =	hid_pre_reset,
+	.post_reset =	hid_post_reset,
+	.id_table =	hid_usb_ids,
+};
+
+static int __init hid_init(void)
+{
+	int retval;
+	retval = usbhid_quirks_init(quirks_param);
+	if (retval)
+		goto usbhid_quirks_init_fail;
+	retval = hiddev_init();
+	if (retval)
+		goto hiddev_init_fail;
+	retval = usb_register(&hid_driver);
+	if (retval)
+		goto usb_register_fail;
+	info(DRIVER_VERSION ":" DRIVER_DESC);
+
+	return 0;
+usb_register_fail:
+	hiddev_exit();
+hiddev_init_fail:
+	usbhid_quirks_exit();
+usbhid_quirks_init_fail:
+	return retval;
+}
+
+static void __exit hid_exit(void)
+{
+	usb_deregister(&hid_driver);
+	hiddev_exit();
+	usbhid_quirks_exit();
+}
+
+module_init(hid_init);
+module_exit(hid_exit);
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE(DRIVER_LICENSE);