1187 lines
34 KiB
C
1187 lines
34 KiB
C
/* Linux driver for Philips webcam
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USB and Video4Linux interface part.
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(C) 1999-2004 Nemosoft Unv.
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(C) 2004-2006 Luc Saillard (luc@saillard.org)
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(C) 2011 Hans de Goede <hdegoede@redhat.com>
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NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx
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driver and thus may have bugs that are not present in the original version.
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Please send bug reports and support requests to <luc@saillard.org>.
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The decompression routines have been implemented by reverse-engineering the
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Nemosoft binary pwcx module. Caveat emptor.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*
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This code forms the interface between the USB layers and the Philips
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specific stuff. Some adanved stuff of the driver falls under an
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NDA, signed between me and Philips B.V., Eindhoven, the Netherlands, and
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is thus not distributed in source form. The binary pwcx.o module
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contains the code that falls under the NDA.
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In case you're wondering: 'pwc' stands for "Philips WebCam", but
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I really didn't want to type 'philips_web_cam' every time (I'm lazy as
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any Linux kernel hacker, but I don't like uncomprehensible abbreviations
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without explanation).
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Oh yes, convention: to disctinguish between all the various pointers to
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device-structures, I use these names for the pointer variables:
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udev: struct usb_device *
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vdev: struct video_device (member of pwc_dev)
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pdev: struct pwc_devive *
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*/
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/* Contributors:
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- Alvarado: adding whitebalance code
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- Alistar Moire: QuickCam 3000 Pro device/product ID
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- Tony Hoyle: Creative Labs Webcam 5 device/product ID
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- Mark Burazin: solving hang in VIDIOCSYNC when camera gets unplugged
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- Jk Fang: Sotec Afina Eye ID
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- Xavier Roche: QuickCam Pro 4000 ID
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- Jens Knudsen: QuickCam Zoom ID
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- J. Debert: QuickCam for Notebooks ID
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- Pham Thanh Nam: webcam snapshot button as an event input device
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*/
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/mm.h>
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#include <linux/module.h>
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#include <linux/poll.h>
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#include <linux/slab.h>
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#ifdef CONFIG_USB_PWC_INPUT_EVDEV
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#include <linux/usb/input.h>
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#endif
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#include <linux/vmalloc.h>
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#include <asm/io.h>
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#include <linux/kernel.h> /* simple_strtol() */
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#include "pwc.h"
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#include "pwc-kiara.h"
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#include "pwc-timon.h"
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#include "pwc-dec23.h"
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#include "pwc-dec1.h"
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/* Function prototypes and driver templates */
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/* hotplug device table support */
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static const struct usb_device_id pwc_device_table [] = {
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{ USB_DEVICE(0x0471, 0x0302) }, /* Philips models */
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{ USB_DEVICE(0x0471, 0x0303) },
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{ USB_DEVICE(0x0471, 0x0304) },
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{ USB_DEVICE(0x0471, 0x0307) },
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{ USB_DEVICE(0x0471, 0x0308) },
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{ USB_DEVICE(0x0471, 0x030C) },
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{ USB_DEVICE(0x0471, 0x0310) },
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{ USB_DEVICE(0x0471, 0x0311) }, /* Philips ToUcam PRO II */
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{ USB_DEVICE(0x0471, 0x0312) },
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{ USB_DEVICE(0x0471, 0x0313) }, /* the 'new' 720K */
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{ USB_DEVICE(0x0471, 0x0329) }, /* Philips SPC 900NC PC Camera */
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{ USB_DEVICE(0x0471, 0x032C) }, /* Philips SPC 880NC PC Camera */
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{ USB_DEVICE(0x069A, 0x0001) }, /* Askey */
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{ USB_DEVICE(0x046D, 0x08B0) }, /* Logitech QuickCam Pro 3000 */
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{ USB_DEVICE(0x046D, 0x08B1) }, /* Logitech QuickCam Notebook Pro */
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{ USB_DEVICE(0x046D, 0x08B2) }, /* Logitech QuickCam Pro 4000 */
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{ USB_DEVICE(0x046D, 0x08B3) }, /* Logitech QuickCam Zoom (old model) */
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{ USB_DEVICE(0x046D, 0x08B4) }, /* Logitech QuickCam Zoom (new model) */
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{ USB_DEVICE(0x046D, 0x08B5) }, /* Logitech QuickCam Orbit/Sphere */
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{ USB_DEVICE(0x046D, 0x08B6) }, /* Cisco VT Camera */
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{ USB_DEVICE(0x046D, 0x08B7) }, /* Logitech ViewPort AV 100 */
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{ USB_DEVICE(0x046D, 0x08B8) }, /* Logitech (reserved) */
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{ USB_DEVICE(0x055D, 0x9000) }, /* Samsung MPC-C10 */
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{ USB_DEVICE(0x055D, 0x9001) }, /* Samsung MPC-C30 */
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{ USB_DEVICE(0x055D, 0x9002) }, /* Samsung SNC-35E (Ver3.0) */
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{ USB_DEVICE(0x041E, 0x400C) }, /* Creative Webcam 5 */
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{ USB_DEVICE(0x041E, 0x4011) }, /* Creative Webcam Pro Ex */
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{ USB_DEVICE(0x04CC, 0x8116) }, /* Afina Eye */
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{ USB_DEVICE(0x06BE, 0x8116) }, /* new Afina Eye */
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{ USB_DEVICE(0x0d81, 0x1910) }, /* Visionite */
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{ USB_DEVICE(0x0d81, 0x1900) },
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{ }
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};
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MODULE_DEVICE_TABLE(usb, pwc_device_table);
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static int usb_pwc_probe(struct usb_interface *intf, const struct usb_device_id *id);
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static void usb_pwc_disconnect(struct usb_interface *intf);
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static void pwc_isoc_cleanup(struct pwc_device *pdev);
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static struct usb_driver pwc_driver = {
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.name = "Philips webcam", /* name */
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.id_table = pwc_device_table,
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.probe = usb_pwc_probe, /* probe() */
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.disconnect = usb_pwc_disconnect, /* disconnect() */
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};
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#define MAX_DEV_HINTS 20
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#define MAX_ISOC_ERRORS 20
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#ifdef CONFIG_USB_PWC_DEBUG
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int pwc_trace = PWC_DEBUG_LEVEL;
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#endif
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static int power_save = -1;
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static int leds[2] = { 100, 0 };
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/***/
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static const struct v4l2_file_operations pwc_fops = {
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.owner = THIS_MODULE,
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.open = v4l2_fh_open,
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.release = vb2_fop_release,
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.read = vb2_fop_read,
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.poll = vb2_fop_poll,
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.mmap = vb2_fop_mmap,
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.unlocked_ioctl = video_ioctl2,
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};
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static const struct video_device pwc_template = {
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.name = "Philips Webcam", /* Filled in later */
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.release = video_device_release_empty,
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.fops = &pwc_fops,
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.ioctl_ops = &pwc_ioctl_ops,
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};
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/***************************************************************************/
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/* Private functions */
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static struct pwc_frame_buf *pwc_get_next_fill_buf(struct pwc_device *pdev)
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{
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unsigned long flags = 0;
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struct pwc_frame_buf *buf = NULL;
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spin_lock_irqsave(&pdev->queued_bufs_lock, flags);
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if (list_empty(&pdev->queued_bufs))
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goto leave;
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buf = list_entry(pdev->queued_bufs.next, struct pwc_frame_buf, list);
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list_del(&buf->list);
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leave:
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spin_unlock_irqrestore(&pdev->queued_bufs_lock, flags);
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return buf;
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}
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static void pwc_snapshot_button(struct pwc_device *pdev, int down)
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{
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if (down) {
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PWC_TRACE("Snapshot button pressed.\n");
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} else {
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PWC_TRACE("Snapshot button released.\n");
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}
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#ifdef CONFIG_USB_PWC_INPUT_EVDEV
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if (pdev->button_dev) {
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input_report_key(pdev->button_dev, KEY_CAMERA, down);
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input_sync(pdev->button_dev);
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}
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#endif
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}
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static void pwc_frame_complete(struct pwc_device *pdev)
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{
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struct pwc_frame_buf *fbuf = pdev->fill_buf;
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/* The ToUCam Fun CMOS sensor causes the firmware to send 2 or 3 bogus
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frames on the USB wire after an exposure change. This conditition is
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however detected in the cam and a bit is set in the header.
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*/
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if (pdev->type == 730) {
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unsigned char *ptr = (unsigned char *)fbuf->data;
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if (ptr[1] == 1 && ptr[0] & 0x10) {
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PWC_TRACE("Hyundai CMOS sensor bug. Dropping frame.\n");
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pdev->drop_frames += 2;
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}
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if ((ptr[0] ^ pdev->vmirror) & 0x01) {
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pwc_snapshot_button(pdev, ptr[0] & 0x01);
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}
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if ((ptr[0] ^ pdev->vmirror) & 0x02) {
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if (ptr[0] & 0x02)
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PWC_TRACE("Image is mirrored.\n");
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else
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PWC_TRACE("Image is normal.\n");
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}
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pdev->vmirror = ptr[0] & 0x03;
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/* Sometimes the trailer of the 730 is still sent as a 4 byte packet
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after a short frame; this condition is filtered out specifically. A 4 byte
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frame doesn't make sense anyway.
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So we get either this sequence:
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drop_bit set -> 4 byte frame -> short frame -> good frame
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Or this one:
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drop_bit set -> short frame -> good frame
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So we drop either 3 or 2 frames in all!
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*/
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if (fbuf->filled == 4)
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pdev->drop_frames++;
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} else if (pdev->type == 740 || pdev->type == 720) {
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unsigned char *ptr = (unsigned char *)fbuf->data;
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if ((ptr[0] ^ pdev->vmirror) & 0x01) {
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pwc_snapshot_button(pdev, ptr[0] & 0x01);
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}
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pdev->vmirror = ptr[0] & 0x03;
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}
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/* In case we were instructed to drop the frame, do so silently. */
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if (pdev->drop_frames > 0) {
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pdev->drop_frames--;
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} else {
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/* Check for underflow first */
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if (fbuf->filled < pdev->frame_total_size) {
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PWC_DEBUG_FLOW("Frame buffer underflow (%d bytes); discarded.\n",
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fbuf->filled);
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} else {
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fbuf->vb.field = V4L2_FIELD_NONE;
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fbuf->vb.sequence = pdev->vframe_count;
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vb2_buffer_done(&fbuf->vb.vb2_buf, VB2_BUF_STATE_DONE);
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pdev->fill_buf = NULL;
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pdev->vsync = 0;
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}
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} /* !drop_frames */
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pdev->vframe_count++;
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}
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/* This gets called for the Isochronous pipe (video). This is done in
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* interrupt time, so it has to be fast, not crash, and not stall. Neat.
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*/
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static void pwc_isoc_handler(struct urb *urb)
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{
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struct pwc_device *pdev = (struct pwc_device *)urb->context;
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int i, fst, flen;
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unsigned char *iso_buf = NULL;
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if (urb->status == -ENOENT || urb->status == -ECONNRESET ||
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urb->status == -ESHUTDOWN) {
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PWC_DEBUG_OPEN("URB (%p) unlinked %ssynchronously.\n",
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urb, urb->status == -ENOENT ? "" : "a");
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return;
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}
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if (pdev->fill_buf == NULL)
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pdev->fill_buf = pwc_get_next_fill_buf(pdev);
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if (urb->status != 0) {
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const char *errmsg;
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errmsg = "Unknown";
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switch(urb->status) {
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case -ENOSR: errmsg = "Buffer error (overrun)"; break;
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case -EPIPE: errmsg = "Stalled (device not responding)"; break;
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case -EOVERFLOW: errmsg = "Babble (bad cable?)"; break;
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case -EPROTO: errmsg = "Bit-stuff error (bad cable?)"; break;
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case -EILSEQ: errmsg = "CRC/Timeout (could be anything)"; break;
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case -ETIME: errmsg = "Device does not respond"; break;
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}
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PWC_ERROR("pwc_isoc_handler() called with status %d [%s].\n",
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urb->status, errmsg);
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/* Give up after a number of contiguous errors */
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if (++pdev->visoc_errors > MAX_ISOC_ERRORS)
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{
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PWC_ERROR("Too many ISOC errors, bailing out.\n");
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if (pdev->fill_buf) {
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vb2_buffer_done(&pdev->fill_buf->vb.vb2_buf,
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VB2_BUF_STATE_ERROR);
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pdev->fill_buf = NULL;
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}
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}
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pdev->vsync = 0; /* Drop the current frame */
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goto handler_end;
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}
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/* Reset ISOC error counter. We did get here, after all. */
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pdev->visoc_errors = 0;
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/* vsync: 0 = don't copy data
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1 = sync-hunt
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2 = synched
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*/
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/* Compact data */
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for (i = 0; i < urb->number_of_packets; i++) {
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fst = urb->iso_frame_desc[i].status;
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flen = urb->iso_frame_desc[i].actual_length;
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iso_buf = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
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if (fst != 0) {
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PWC_ERROR("Iso frame %d has error %d\n", i, fst);
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continue;
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}
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if (flen > 0 && pdev->vsync) {
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struct pwc_frame_buf *fbuf = pdev->fill_buf;
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if (pdev->vsync == 1) {
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fbuf->vb.vb2_buf.timestamp = ktime_get_ns();
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pdev->vsync = 2;
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}
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if (flen + fbuf->filled > pdev->frame_total_size) {
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PWC_ERROR("Frame overflow (%d > %d)\n",
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flen + fbuf->filled,
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pdev->frame_total_size);
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pdev->vsync = 0; /* Let's wait for an EOF */
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} else {
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memcpy(fbuf->data + fbuf->filled, iso_buf,
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flen);
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fbuf->filled += flen;
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}
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}
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if (flen < pdev->vlast_packet_size) {
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/* Shorter packet... end of frame */
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if (pdev->vsync == 2)
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pwc_frame_complete(pdev);
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if (pdev->fill_buf == NULL)
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pdev->fill_buf = pwc_get_next_fill_buf(pdev);
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if (pdev->fill_buf) {
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pdev->fill_buf->filled = 0;
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pdev->vsync = 1;
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}
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}
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pdev->vlast_packet_size = flen;
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}
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handler_end:
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i = usb_submit_urb(urb, GFP_ATOMIC);
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if (i != 0)
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PWC_ERROR("Error (%d) re-submitting urb in pwc_isoc_handler.\n", i);
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}
|
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|
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/* Both v4l2_lock and vb_queue_lock should be locked when calling this */
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static int pwc_isoc_init(struct pwc_device *pdev)
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{
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struct usb_device *udev;
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struct urb *urb;
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int i, j, ret;
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struct usb_interface *intf;
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struct usb_host_interface *idesc = NULL;
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int compression = 0; /* 0..3 = uncompressed..high */
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|
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pdev->vsync = 0;
|
|
pdev->vlast_packet_size = 0;
|
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pdev->fill_buf = NULL;
|
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pdev->vframe_count = 0;
|
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pdev->visoc_errors = 0;
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udev = pdev->udev;
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|
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retry:
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/* We first try with low compression and then retry with a higher
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compression setting if there is not enough bandwidth. */
|
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ret = pwc_set_video_mode(pdev, pdev->width, pdev->height, pdev->pixfmt,
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pdev->vframes, &compression, 1);
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|
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/* Get the current alternate interface, adjust packet size */
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intf = usb_ifnum_to_if(udev, 0);
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if (intf)
|
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idesc = usb_altnum_to_altsetting(intf, pdev->valternate);
|
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if (!idesc)
|
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return -EIO;
|
|
|
|
/* Search video endpoint */
|
|
pdev->vmax_packet_size = -1;
|
|
for (i = 0; i < idesc->desc.bNumEndpoints; i++) {
|
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if ((idesc->endpoint[i].desc.bEndpointAddress & 0xF) == pdev->vendpoint) {
|
|
pdev->vmax_packet_size = le16_to_cpu(idesc->endpoint[i].desc.wMaxPacketSize);
|
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break;
|
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}
|
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}
|
|
|
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if (pdev->vmax_packet_size < 0 || pdev->vmax_packet_size > ISO_MAX_FRAME_SIZE) {
|
|
PWC_ERROR("Failed to find packet size for video endpoint in current alternate setting.\n");
|
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return -ENFILE; /* Odd error, that should be noticeable */
|
|
}
|
|
|
|
/* Set alternate interface */
|
|
PWC_DEBUG_OPEN("Setting alternate interface %d\n", pdev->valternate);
|
|
ret = usb_set_interface(pdev->udev, 0, pdev->valternate);
|
|
if (ret == -ENOSPC && compression < 3) {
|
|
compression++;
|
|
goto retry;
|
|
}
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Allocate and init Isochronuous urbs */
|
|
for (i = 0; i < MAX_ISO_BUFS; i++) {
|
|
urb = usb_alloc_urb(ISO_FRAMES_PER_DESC, GFP_KERNEL);
|
|
if (urb == NULL) {
|
|
pwc_isoc_cleanup(pdev);
|
|
return -ENOMEM;
|
|
}
|
|
pdev->urbs[i] = urb;
|
|
PWC_DEBUG_MEMORY("Allocated URB at 0x%p\n", urb);
|
|
|
|
urb->interval = 1; // devik
|
|
urb->dev = udev;
|
|
urb->pipe = usb_rcvisocpipe(udev, pdev->vendpoint);
|
|
urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
|
|
urb->transfer_buffer = usb_alloc_coherent(udev,
|
|
ISO_BUFFER_SIZE,
|
|
GFP_KERNEL,
|
|
&urb->transfer_dma);
|
|
if (urb->transfer_buffer == NULL) {
|
|
PWC_ERROR("Failed to allocate urb buffer %d\n", i);
|
|
pwc_isoc_cleanup(pdev);
|
|
return -ENOMEM;
|
|
}
|
|
urb->transfer_buffer_length = ISO_BUFFER_SIZE;
|
|
urb->complete = pwc_isoc_handler;
|
|
urb->context = pdev;
|
|
urb->start_frame = 0;
|
|
urb->number_of_packets = ISO_FRAMES_PER_DESC;
|
|
for (j = 0; j < ISO_FRAMES_PER_DESC; j++) {
|
|
urb->iso_frame_desc[j].offset = j * ISO_MAX_FRAME_SIZE;
|
|
urb->iso_frame_desc[j].length = pdev->vmax_packet_size;
|
|
}
|
|
}
|
|
|
|
/* link */
|
|
for (i = 0; i < MAX_ISO_BUFS; i++) {
|
|
ret = usb_submit_urb(pdev->urbs[i], GFP_KERNEL);
|
|
if (ret == -ENOSPC && compression < 3) {
|
|
compression++;
|
|
pwc_isoc_cleanup(pdev);
|
|
goto retry;
|
|
}
|
|
if (ret) {
|
|
PWC_ERROR("isoc_init() submit_urb %d failed with error %d\n", i, ret);
|
|
pwc_isoc_cleanup(pdev);
|
|
return ret;
|
|
}
|
|
PWC_DEBUG_MEMORY("URB 0x%p submitted.\n", pdev->urbs[i]);
|
|
}
|
|
|
|
/* All is done... */
|
|
PWC_DEBUG_OPEN("<< pwc_isoc_init()\n");
|
|
return 0;
|
|
}
|
|
|
|
static void pwc_iso_stop(struct pwc_device *pdev)
|
|
{
|
|
int i;
|
|
|
|
/* Unlinking ISOC buffers one by one */
|
|
for (i = 0; i < MAX_ISO_BUFS; i++) {
|
|
if (pdev->urbs[i]) {
|
|
PWC_DEBUG_MEMORY("Unlinking URB %p\n", pdev->urbs[i]);
|
|
usb_kill_urb(pdev->urbs[i]);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void pwc_iso_free(struct pwc_device *pdev)
|
|
{
|
|
int i;
|
|
|
|
/* Freeing ISOC buffers one by one */
|
|
for (i = 0; i < MAX_ISO_BUFS; i++) {
|
|
if (pdev->urbs[i]) {
|
|
PWC_DEBUG_MEMORY("Freeing URB\n");
|
|
if (pdev->urbs[i]->transfer_buffer) {
|
|
usb_free_coherent(pdev->udev,
|
|
pdev->urbs[i]->transfer_buffer_length,
|
|
pdev->urbs[i]->transfer_buffer,
|
|
pdev->urbs[i]->transfer_dma);
|
|
}
|
|
usb_free_urb(pdev->urbs[i]);
|
|
pdev->urbs[i] = NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Both v4l2_lock and vb_queue_lock should be locked when calling this */
|
|
static void pwc_isoc_cleanup(struct pwc_device *pdev)
|
|
{
|
|
PWC_DEBUG_OPEN(">> pwc_isoc_cleanup()\n");
|
|
|
|
pwc_iso_stop(pdev);
|
|
pwc_iso_free(pdev);
|
|
usb_set_interface(pdev->udev, 0, 0);
|
|
|
|
PWC_DEBUG_OPEN("<< pwc_isoc_cleanup()\n");
|
|
}
|
|
|
|
/* Must be called with vb_queue_lock hold */
|
|
static void pwc_cleanup_queued_bufs(struct pwc_device *pdev,
|
|
enum vb2_buffer_state state)
|
|
{
|
|
unsigned long flags = 0;
|
|
|
|
spin_lock_irqsave(&pdev->queued_bufs_lock, flags);
|
|
while (!list_empty(&pdev->queued_bufs)) {
|
|
struct pwc_frame_buf *buf;
|
|
|
|
buf = list_entry(pdev->queued_bufs.next, struct pwc_frame_buf,
|
|
list);
|
|
list_del(&buf->list);
|
|
vb2_buffer_done(&buf->vb.vb2_buf, state);
|
|
}
|
|
spin_unlock_irqrestore(&pdev->queued_bufs_lock, flags);
|
|
}
|
|
|
|
#ifdef CONFIG_USB_PWC_DEBUG
|
|
static const char *pwc_sensor_type_to_string(unsigned int sensor_type)
|
|
{
|
|
switch(sensor_type) {
|
|
case 0x00:
|
|
return "Hyundai CMOS sensor";
|
|
case 0x20:
|
|
return "Sony CCD sensor + TDA8787";
|
|
case 0x2E:
|
|
return "Sony CCD sensor + Exas 98L59";
|
|
case 0x2F:
|
|
return "Sony CCD sensor + ADI 9804";
|
|
case 0x30:
|
|
return "Sharp CCD sensor + TDA8787";
|
|
case 0x3E:
|
|
return "Sharp CCD sensor + Exas 98L59";
|
|
case 0x3F:
|
|
return "Sharp CCD sensor + ADI 9804";
|
|
case 0x40:
|
|
return "UPA 1021 sensor";
|
|
case 0x100:
|
|
return "VGA sensor";
|
|
case 0x101:
|
|
return "PAL MR sensor";
|
|
default:
|
|
return "unknown type of sensor";
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/***************************************************************************/
|
|
/* Video4Linux functions */
|
|
|
|
static void pwc_video_release(struct v4l2_device *v)
|
|
{
|
|
struct pwc_device *pdev = container_of(v, struct pwc_device, v4l2_dev);
|
|
|
|
v4l2_ctrl_handler_free(&pdev->ctrl_handler);
|
|
v4l2_device_unregister(&pdev->v4l2_dev);
|
|
kfree(pdev->ctrl_buf);
|
|
kfree(pdev);
|
|
}
|
|
|
|
/***************************************************************************/
|
|
/* Videobuf2 operations */
|
|
|
|
static int queue_setup(struct vb2_queue *vq,
|
|
unsigned int *nbuffers, unsigned int *nplanes,
|
|
unsigned int sizes[], struct device *alloc_devs[])
|
|
{
|
|
struct pwc_device *pdev = vb2_get_drv_priv(vq);
|
|
int size;
|
|
|
|
if (*nbuffers < MIN_FRAMES)
|
|
*nbuffers = MIN_FRAMES;
|
|
else if (*nbuffers > MAX_FRAMES)
|
|
*nbuffers = MAX_FRAMES;
|
|
|
|
*nplanes = 1;
|
|
|
|
size = pwc_get_size(pdev, MAX_WIDTH, MAX_HEIGHT);
|
|
sizes[0] = PAGE_ALIGN(pwc_image_sizes[size][0] *
|
|
pwc_image_sizes[size][1] * 3 / 2);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int buffer_init(struct vb2_buffer *vb)
|
|
{
|
|
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
|
|
struct pwc_frame_buf *buf =
|
|
container_of(vbuf, struct pwc_frame_buf, vb);
|
|
|
|
/* need vmalloc since frame buffer > 128K */
|
|
buf->data = vzalloc(PWC_FRAME_SIZE);
|
|
if (buf->data == NULL)
|
|
return -ENOMEM;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int buffer_prepare(struct vb2_buffer *vb)
|
|
{
|
|
struct pwc_device *pdev = vb2_get_drv_priv(vb->vb2_queue);
|
|
|
|
/* Don't allow queing new buffers after device disconnection */
|
|
if (!pdev->udev)
|
|
return -ENODEV;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void buffer_finish(struct vb2_buffer *vb)
|
|
{
|
|
struct pwc_device *pdev = vb2_get_drv_priv(vb->vb2_queue);
|
|
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
|
|
struct pwc_frame_buf *buf =
|
|
container_of(vbuf, struct pwc_frame_buf, vb);
|
|
|
|
if (vb->state == VB2_BUF_STATE_DONE) {
|
|
/*
|
|
* Application has called dqbuf and is getting back a buffer
|
|
* we've filled, take the pwc data we've stored in buf->data
|
|
* and decompress it into a usable format, storing the result
|
|
* in the vb2_buffer.
|
|
*/
|
|
pwc_decompress(pdev, buf);
|
|
}
|
|
}
|
|
|
|
static void buffer_cleanup(struct vb2_buffer *vb)
|
|
{
|
|
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
|
|
struct pwc_frame_buf *buf =
|
|
container_of(vbuf, struct pwc_frame_buf, vb);
|
|
|
|
vfree(buf->data);
|
|
}
|
|
|
|
static void buffer_queue(struct vb2_buffer *vb)
|
|
{
|
|
struct pwc_device *pdev = vb2_get_drv_priv(vb->vb2_queue);
|
|
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
|
|
struct pwc_frame_buf *buf =
|
|
container_of(vbuf, struct pwc_frame_buf, vb);
|
|
unsigned long flags = 0;
|
|
|
|
/* Check the device has not disconnected between prep and queuing */
|
|
if (!pdev->udev) {
|
|
vb2_buffer_done(vb, VB2_BUF_STATE_ERROR);
|
|
return;
|
|
}
|
|
|
|
spin_lock_irqsave(&pdev->queued_bufs_lock, flags);
|
|
list_add_tail(&buf->list, &pdev->queued_bufs);
|
|
spin_unlock_irqrestore(&pdev->queued_bufs_lock, flags);
|
|
}
|
|
|
|
static int start_streaming(struct vb2_queue *vq, unsigned int count)
|
|
{
|
|
struct pwc_device *pdev = vb2_get_drv_priv(vq);
|
|
int r;
|
|
|
|
if (!pdev->udev)
|
|
return -ENODEV;
|
|
|
|
if (mutex_lock_interruptible(&pdev->v4l2_lock))
|
|
return -ERESTARTSYS;
|
|
/* Turn on camera and set LEDS on */
|
|
pwc_camera_power(pdev, 1);
|
|
pwc_set_leds(pdev, leds[0], leds[1]);
|
|
|
|
r = pwc_isoc_init(pdev);
|
|
if (r) {
|
|
/* If we failed turn camera and LEDS back off */
|
|
pwc_set_leds(pdev, 0, 0);
|
|
pwc_camera_power(pdev, 0);
|
|
/* And cleanup any queued bufs!! */
|
|
pwc_cleanup_queued_bufs(pdev, VB2_BUF_STATE_QUEUED);
|
|
}
|
|
mutex_unlock(&pdev->v4l2_lock);
|
|
|
|
return r;
|
|
}
|
|
|
|
static void stop_streaming(struct vb2_queue *vq)
|
|
{
|
|
struct pwc_device *pdev = vb2_get_drv_priv(vq);
|
|
|
|
mutex_lock(&pdev->v4l2_lock);
|
|
if (pdev->udev) {
|
|
pwc_set_leds(pdev, 0, 0);
|
|
pwc_camera_power(pdev, 0);
|
|
pwc_isoc_cleanup(pdev);
|
|
}
|
|
|
|
pwc_cleanup_queued_bufs(pdev, VB2_BUF_STATE_ERROR);
|
|
if (pdev->fill_buf)
|
|
vb2_buffer_done(&pdev->fill_buf->vb.vb2_buf,
|
|
VB2_BUF_STATE_ERROR);
|
|
mutex_unlock(&pdev->v4l2_lock);
|
|
}
|
|
|
|
static const struct vb2_ops pwc_vb_queue_ops = {
|
|
.queue_setup = queue_setup,
|
|
.buf_init = buffer_init,
|
|
.buf_prepare = buffer_prepare,
|
|
.buf_finish = buffer_finish,
|
|
.buf_cleanup = buffer_cleanup,
|
|
.buf_queue = buffer_queue,
|
|
.start_streaming = start_streaming,
|
|
.stop_streaming = stop_streaming,
|
|
.wait_prepare = vb2_ops_wait_prepare,
|
|
.wait_finish = vb2_ops_wait_finish,
|
|
};
|
|
|
|
/***************************************************************************/
|
|
/* USB functions */
|
|
|
|
/* This function gets called when a new device is plugged in or the usb core
|
|
* is loaded.
|
|
*/
|
|
|
|
static int usb_pwc_probe(struct usb_interface *intf, const struct usb_device_id *id)
|
|
{
|
|
struct usb_device *udev = interface_to_usbdev(intf);
|
|
struct pwc_device *pdev = NULL;
|
|
int vendor_id, product_id, type_id;
|
|
int rc;
|
|
int features = 0;
|
|
int compression = 0;
|
|
int my_power_save = power_save;
|
|
char serial_number[30], *name;
|
|
|
|
vendor_id = le16_to_cpu(udev->descriptor.idVendor);
|
|
product_id = le16_to_cpu(udev->descriptor.idProduct);
|
|
|
|
/* Check if we can handle this device */
|
|
PWC_DEBUG_PROBE("probe() called [%04X %04X], if %d\n",
|
|
vendor_id, product_id,
|
|
intf->altsetting->desc.bInterfaceNumber);
|
|
|
|
/* the interfaces are probed one by one. We are only interested in the
|
|
video interface (0) now.
|
|
Interface 1 is the Audio Control, and interface 2 Audio itself.
|
|
*/
|
|
if (intf->altsetting->desc.bInterfaceNumber > 0)
|
|
return -ENODEV;
|
|
|
|
if (vendor_id == 0x0471) {
|
|
switch (product_id) {
|
|
case 0x0302:
|
|
PWC_INFO("Philips PCA645VC USB webcam detected.\n");
|
|
name = "Philips 645 webcam";
|
|
type_id = 645;
|
|
break;
|
|
case 0x0303:
|
|
PWC_INFO("Philips PCA646VC USB webcam detected.\n");
|
|
name = "Philips 646 webcam";
|
|
type_id = 646;
|
|
break;
|
|
case 0x0304:
|
|
PWC_INFO("Askey VC010 type 2 USB webcam detected.\n");
|
|
name = "Askey VC010 webcam";
|
|
type_id = 646;
|
|
break;
|
|
case 0x0307:
|
|
PWC_INFO("Philips PCVC675K (Vesta) USB webcam detected.\n");
|
|
name = "Philips 675 webcam";
|
|
type_id = 675;
|
|
break;
|
|
case 0x0308:
|
|
PWC_INFO("Philips PCVC680K (Vesta Pro) USB webcam detected.\n");
|
|
name = "Philips 680 webcam";
|
|
type_id = 680;
|
|
break;
|
|
case 0x030C:
|
|
PWC_INFO("Philips PCVC690K (Vesta Pro Scan) USB webcam detected.\n");
|
|
name = "Philips 690 webcam";
|
|
type_id = 690;
|
|
break;
|
|
case 0x0310:
|
|
PWC_INFO("Philips PCVC730K (ToUCam Fun)/PCVC830 (ToUCam II) USB webcam detected.\n");
|
|
name = "Philips 730 webcam";
|
|
type_id = 730;
|
|
break;
|
|
case 0x0311:
|
|
PWC_INFO("Philips PCVC740K (ToUCam Pro)/PCVC840 (ToUCam II) USB webcam detected.\n");
|
|
name = "Philips 740 webcam";
|
|
type_id = 740;
|
|
break;
|
|
case 0x0312:
|
|
PWC_INFO("Philips PCVC750K (ToUCam Pro Scan) USB webcam detected.\n");
|
|
name = "Philips 750 webcam";
|
|
type_id = 750;
|
|
break;
|
|
case 0x0313:
|
|
PWC_INFO("Philips PCVC720K/40 (ToUCam XS) USB webcam detected.\n");
|
|
name = "Philips 720K/40 webcam";
|
|
type_id = 720;
|
|
break;
|
|
case 0x0329:
|
|
PWC_INFO("Philips SPC 900NC USB webcam detected.\n");
|
|
name = "Philips SPC 900NC webcam";
|
|
type_id = 740;
|
|
break;
|
|
case 0x032C:
|
|
PWC_INFO("Philips SPC 880NC USB webcam detected.\n");
|
|
name = "Philips SPC 880NC webcam";
|
|
type_id = 740;
|
|
break;
|
|
default:
|
|
return -ENODEV;
|
|
break;
|
|
}
|
|
}
|
|
else if (vendor_id == 0x069A) {
|
|
switch(product_id) {
|
|
case 0x0001:
|
|
PWC_INFO("Askey VC010 type 1 USB webcam detected.\n");
|
|
name = "Askey VC010 webcam";
|
|
type_id = 645;
|
|
break;
|
|
default:
|
|
return -ENODEV;
|
|
break;
|
|
}
|
|
}
|
|
else if (vendor_id == 0x046d) {
|
|
switch(product_id) {
|
|
case 0x08b0:
|
|
PWC_INFO("Logitech QuickCam Pro 3000 USB webcam detected.\n");
|
|
name = "Logitech QuickCam Pro 3000";
|
|
type_id = 740; /* CCD sensor */
|
|
break;
|
|
case 0x08b1:
|
|
PWC_INFO("Logitech QuickCam Notebook Pro USB webcam detected.\n");
|
|
name = "Logitech QuickCam Notebook Pro";
|
|
type_id = 740; /* CCD sensor */
|
|
break;
|
|
case 0x08b2:
|
|
PWC_INFO("Logitech QuickCam 4000 Pro USB webcam detected.\n");
|
|
name = "Logitech QuickCam Pro 4000";
|
|
type_id = 740; /* CCD sensor */
|
|
if (my_power_save == -1)
|
|
my_power_save = 1;
|
|
break;
|
|
case 0x08b3:
|
|
PWC_INFO("Logitech QuickCam Zoom USB webcam detected.\n");
|
|
name = "Logitech QuickCam Zoom";
|
|
type_id = 740; /* CCD sensor */
|
|
break;
|
|
case 0x08B4:
|
|
PWC_INFO("Logitech QuickCam Zoom (new model) USB webcam detected.\n");
|
|
name = "Logitech QuickCam Zoom";
|
|
type_id = 740; /* CCD sensor */
|
|
if (my_power_save == -1)
|
|
my_power_save = 1;
|
|
break;
|
|
case 0x08b5:
|
|
PWC_INFO("Logitech QuickCam Orbit/Sphere USB webcam detected.\n");
|
|
name = "Logitech QuickCam Orbit";
|
|
type_id = 740; /* CCD sensor */
|
|
if (my_power_save == -1)
|
|
my_power_save = 1;
|
|
features |= FEATURE_MOTOR_PANTILT;
|
|
break;
|
|
case 0x08b6:
|
|
PWC_INFO("Logitech/Cisco VT Camera webcam detected.\n");
|
|
name = "Cisco VT Camera";
|
|
type_id = 740; /* CCD sensor */
|
|
break;
|
|
case 0x08b7:
|
|
PWC_INFO("Logitech ViewPort AV 100 webcam detected.\n");
|
|
name = "Logitech ViewPort AV 100";
|
|
type_id = 740; /* CCD sensor */
|
|
break;
|
|
case 0x08b8: /* Where this released? */
|
|
PWC_INFO("Logitech QuickCam detected (reserved ID).\n");
|
|
name = "Logitech QuickCam (res.)";
|
|
type_id = 730; /* Assuming CMOS */
|
|
break;
|
|
default:
|
|
return -ENODEV;
|
|
break;
|
|
}
|
|
}
|
|
else if (vendor_id == 0x055d) {
|
|
/* I don't know the difference between the C10 and the C30;
|
|
I suppose the difference is the sensor, but both cameras
|
|
work equally well with a type_id of 675
|
|
*/
|
|
switch(product_id) {
|
|
case 0x9000:
|
|
PWC_INFO("Samsung MPC-C10 USB webcam detected.\n");
|
|
name = "Samsung MPC-C10";
|
|
type_id = 675;
|
|
break;
|
|
case 0x9001:
|
|
PWC_INFO("Samsung MPC-C30 USB webcam detected.\n");
|
|
name = "Samsung MPC-C30";
|
|
type_id = 675;
|
|
break;
|
|
case 0x9002:
|
|
PWC_INFO("Samsung SNC-35E (v3.0) USB webcam detected.\n");
|
|
name = "Samsung MPC-C30";
|
|
type_id = 740;
|
|
break;
|
|
default:
|
|
return -ENODEV;
|
|
break;
|
|
}
|
|
}
|
|
else if (vendor_id == 0x041e) {
|
|
switch(product_id) {
|
|
case 0x400c:
|
|
PWC_INFO("Creative Labs Webcam 5 detected.\n");
|
|
name = "Creative Labs Webcam 5";
|
|
type_id = 730;
|
|
if (my_power_save == -1)
|
|
my_power_save = 1;
|
|
break;
|
|
case 0x4011:
|
|
PWC_INFO("Creative Labs Webcam Pro Ex detected.\n");
|
|
name = "Creative Labs Webcam Pro Ex";
|
|
type_id = 740;
|
|
break;
|
|
default:
|
|
return -ENODEV;
|
|
break;
|
|
}
|
|
}
|
|
else if (vendor_id == 0x04cc) {
|
|
switch(product_id) {
|
|
case 0x8116:
|
|
PWC_INFO("Sotec Afina Eye USB webcam detected.\n");
|
|
name = "Sotec Afina Eye";
|
|
type_id = 730;
|
|
break;
|
|
default:
|
|
return -ENODEV;
|
|
break;
|
|
}
|
|
}
|
|
else if (vendor_id == 0x06be) {
|
|
switch(product_id) {
|
|
case 0x8116:
|
|
/* This is essentially the same cam as the Sotec Afina Eye */
|
|
PWC_INFO("AME Co. Afina Eye USB webcam detected.\n");
|
|
name = "AME Co. Afina Eye";
|
|
type_id = 750;
|
|
break;
|
|
default:
|
|
return -ENODEV;
|
|
break;
|
|
}
|
|
|
|
}
|
|
else if (vendor_id == 0x0d81) {
|
|
switch(product_id) {
|
|
case 0x1900:
|
|
PWC_INFO("Visionite VCS-UC300 USB webcam detected.\n");
|
|
name = "Visionite VCS-UC300";
|
|
type_id = 740; /* CCD sensor */
|
|
break;
|
|
case 0x1910:
|
|
PWC_INFO("Visionite VCS-UM100 USB webcam detected.\n");
|
|
name = "Visionite VCS-UM100";
|
|
type_id = 730; /* CMOS sensor */
|
|
break;
|
|
default:
|
|
return -ENODEV;
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
return -ENODEV; /* Not any of the know types; but the list keeps growing. */
|
|
|
|
if (my_power_save == -1)
|
|
my_power_save = 0;
|
|
|
|
memset(serial_number, 0, 30);
|
|
usb_string(udev, udev->descriptor.iSerialNumber, serial_number, 29);
|
|
PWC_DEBUG_PROBE("Device serial number is %s\n", serial_number);
|
|
|
|
if (udev->descriptor.bNumConfigurations > 1)
|
|
PWC_WARNING("Warning: more than 1 configuration available.\n");
|
|
|
|
/* Allocate structure, initialize pointers, mutexes, etc. and link it to the usb_device */
|
|
pdev = kzalloc(sizeof(struct pwc_device), GFP_KERNEL);
|
|
if (pdev == NULL) {
|
|
PWC_ERROR("Oops, could not allocate memory for pwc_device.\n");
|
|
return -ENOMEM;
|
|
}
|
|
pdev->type = type_id;
|
|
pdev->features = features;
|
|
pwc_construct(pdev); /* set min/max sizes correct */
|
|
|
|
mutex_init(&pdev->v4l2_lock);
|
|
mutex_init(&pdev->vb_queue_lock);
|
|
spin_lock_init(&pdev->queued_bufs_lock);
|
|
INIT_LIST_HEAD(&pdev->queued_bufs);
|
|
|
|
pdev->udev = udev;
|
|
pdev->power_save = my_power_save;
|
|
|
|
/* Init videobuf2 queue structure */
|
|
pdev->vb_queue.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
|
|
pdev->vb_queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ;
|
|
pdev->vb_queue.drv_priv = pdev;
|
|
pdev->vb_queue.buf_struct_size = sizeof(struct pwc_frame_buf);
|
|
pdev->vb_queue.ops = &pwc_vb_queue_ops;
|
|
pdev->vb_queue.mem_ops = &vb2_vmalloc_memops;
|
|
pdev->vb_queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
|
|
rc = vb2_queue_init(&pdev->vb_queue);
|
|
if (rc < 0) {
|
|
PWC_ERROR("Oops, could not initialize vb2 queue.\n");
|
|
goto err_free_mem;
|
|
}
|
|
|
|
/* Init video_device structure */
|
|
pdev->vdev = pwc_template;
|
|
strcpy(pdev->vdev.name, name);
|
|
pdev->vdev.queue = &pdev->vb_queue;
|
|
pdev->vdev.queue->lock = &pdev->vb_queue_lock;
|
|
video_set_drvdata(&pdev->vdev, pdev);
|
|
|
|
pdev->release = le16_to_cpu(udev->descriptor.bcdDevice);
|
|
PWC_DEBUG_PROBE("Release: %04x\n", pdev->release);
|
|
|
|
/* Allocate USB command buffers */
|
|
pdev->ctrl_buf = kmalloc(sizeof(pdev->cmd_buf), GFP_KERNEL);
|
|
if (!pdev->ctrl_buf) {
|
|
PWC_ERROR("Oops, could not allocate memory for pwc_device.\n");
|
|
rc = -ENOMEM;
|
|
goto err_free_mem;
|
|
}
|
|
|
|
#ifdef CONFIG_USB_PWC_DEBUG
|
|
/* Query sensor type */
|
|
if (pwc_get_cmos_sensor(pdev, &rc) >= 0) {
|
|
PWC_DEBUG_OPEN("This %s camera is equipped with a %s (%d).\n",
|
|
pdev->vdev.name,
|
|
pwc_sensor_type_to_string(rc), rc);
|
|
}
|
|
#endif
|
|
|
|
/* Set the leds off */
|
|
pwc_set_leds(pdev, 0, 0);
|
|
|
|
/* Setup initial videomode */
|
|
rc = pwc_set_video_mode(pdev, MAX_WIDTH, MAX_HEIGHT,
|
|
V4L2_PIX_FMT_YUV420, 30, &compression, 1);
|
|
if (rc)
|
|
goto err_free_mem;
|
|
|
|
/* Register controls (and read default values from camera */
|
|
rc = pwc_init_controls(pdev);
|
|
if (rc) {
|
|
PWC_ERROR("Failed to register v4l2 controls (%d).\n", rc);
|
|
goto err_free_mem;
|
|
}
|
|
|
|
/* And powerdown the camera until streaming starts */
|
|
pwc_camera_power(pdev, 0);
|
|
|
|
/* Register the v4l2_device structure */
|
|
pdev->v4l2_dev.release = pwc_video_release;
|
|
rc = v4l2_device_register(&intf->dev, &pdev->v4l2_dev);
|
|
if (rc) {
|
|
PWC_ERROR("Failed to register v4l2-device (%d).\n", rc);
|
|
goto err_free_controls;
|
|
}
|
|
|
|
pdev->v4l2_dev.ctrl_handler = &pdev->ctrl_handler;
|
|
pdev->vdev.v4l2_dev = &pdev->v4l2_dev;
|
|
pdev->vdev.lock = &pdev->v4l2_lock;
|
|
|
|
rc = video_register_device(&pdev->vdev, VFL_TYPE_GRABBER, -1);
|
|
if (rc < 0) {
|
|
PWC_ERROR("Failed to register as video device (%d).\n", rc);
|
|
goto err_unregister_v4l2_dev;
|
|
}
|
|
PWC_INFO("Registered as %s.\n", video_device_node_name(&pdev->vdev));
|
|
|
|
#ifdef CONFIG_USB_PWC_INPUT_EVDEV
|
|
/* register webcam snapshot button input device */
|
|
pdev->button_dev = input_allocate_device();
|
|
if (!pdev->button_dev) {
|
|
rc = -ENOMEM;
|
|
goto err_video_unreg;
|
|
}
|
|
|
|
usb_make_path(udev, pdev->button_phys, sizeof(pdev->button_phys));
|
|
strlcat(pdev->button_phys, "/input0", sizeof(pdev->button_phys));
|
|
|
|
pdev->button_dev->name = "PWC snapshot button";
|
|
pdev->button_dev->phys = pdev->button_phys;
|
|
usb_to_input_id(pdev->udev, &pdev->button_dev->id);
|
|
pdev->button_dev->dev.parent = &pdev->udev->dev;
|
|
pdev->button_dev->evbit[0] = BIT_MASK(EV_KEY);
|
|
pdev->button_dev->keybit[BIT_WORD(KEY_CAMERA)] = BIT_MASK(KEY_CAMERA);
|
|
|
|
rc = input_register_device(pdev->button_dev);
|
|
if (rc) {
|
|
input_free_device(pdev->button_dev);
|
|
pdev->button_dev = NULL;
|
|
goto err_video_unreg;
|
|
}
|
|
#endif
|
|
|
|
return 0;
|
|
|
|
#ifdef CONFIG_USB_PWC_INPUT_EVDEV
|
|
err_video_unreg:
|
|
video_unregister_device(&pdev->vdev);
|
|
#endif
|
|
err_unregister_v4l2_dev:
|
|
v4l2_device_unregister(&pdev->v4l2_dev);
|
|
err_free_controls:
|
|
v4l2_ctrl_handler_free(&pdev->ctrl_handler);
|
|
err_free_mem:
|
|
kfree(pdev->ctrl_buf);
|
|
kfree(pdev);
|
|
return rc;
|
|
}
|
|
|
|
/* The user yanked out the cable... */
|
|
static void usb_pwc_disconnect(struct usb_interface *intf)
|
|
{
|
|
struct v4l2_device *v = usb_get_intfdata(intf);
|
|
struct pwc_device *pdev = container_of(v, struct pwc_device, v4l2_dev);
|
|
|
|
mutex_lock(&pdev->vb_queue_lock);
|
|
mutex_lock(&pdev->v4l2_lock);
|
|
/* No need to keep the urbs around after disconnection */
|
|
if (pdev->vb_queue.streaming)
|
|
pwc_isoc_cleanup(pdev);
|
|
pdev->udev = NULL;
|
|
|
|
v4l2_device_disconnect(&pdev->v4l2_dev);
|
|
video_unregister_device(&pdev->vdev);
|
|
mutex_unlock(&pdev->v4l2_lock);
|
|
mutex_unlock(&pdev->vb_queue_lock);
|
|
|
|
#ifdef CONFIG_USB_PWC_INPUT_EVDEV
|
|
if (pdev->button_dev)
|
|
input_unregister_device(pdev->button_dev);
|
|
#endif
|
|
|
|
v4l2_device_put(&pdev->v4l2_dev);
|
|
}
|
|
|
|
|
|
/*
|
|
* Initialization code & module stuff
|
|
*/
|
|
|
|
static unsigned int leds_nargs;
|
|
|
|
#ifdef CONFIG_USB_PWC_DEBUG
|
|
module_param_named(trace, pwc_trace, int, 0644);
|
|
#endif
|
|
module_param(power_save, int, 0644);
|
|
module_param_array(leds, int, &leds_nargs, 0444);
|
|
|
|
#ifdef CONFIG_USB_PWC_DEBUG
|
|
MODULE_PARM_DESC(trace, "For debugging purposes");
|
|
#endif
|
|
MODULE_PARM_DESC(power_save, "Turn power saving for new cameras on or off");
|
|
MODULE_PARM_DESC(leds, "LED on,off time in milliseconds");
|
|
|
|
MODULE_DESCRIPTION("Philips & OEM USB webcam driver");
|
|
MODULE_AUTHOR("Luc Saillard <luc@saillard.org>");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS("pwcx");
|
|
MODULE_VERSION( PWC_VERSION );
|
|
|
|
module_usb_driver(pwc_driver);
|