diff options
Diffstat (limited to 'drivers/hid/usbhid/hid-core.c')
| -rw-r--r-- | drivers/hid/usbhid/hid-core.c | 1114 |
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 0000000..91d6103 --- /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); |