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@@ -0,0 +1,1955 @@
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+/*
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+ * uvc_driver.c -- USB Video Class driver
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+ *
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+ * Copyright (C) 2005-2008
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+ * Laurent Pinchart (laurent.pinchart@skynet.be)
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+ *
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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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+ *
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+ */
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+
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+/*
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+ * This driver aims to support video input devices compliant with the 'USB
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+ * Video Class' specification.
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+ *
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+ * The driver doesn't support the deprecated v4l1 interface. It implements the
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+ * mmap capture method only, and doesn't do any image format conversion in
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+ * software. If your user-space application doesn't support YUYV or MJPEG, fix
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+ * it :-). Please note that the MJPEG data have been stripped from their
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+ * Huffman tables (DHT marker), you will need to add it back if your JPEG
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+ * codec can't handle MJPEG data.
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+ */
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+
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+#include <linux/kernel.h>
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+#include <linux/version.h>
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+#include <linux/list.h>
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+#include <linux/module.h>
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+#include <linux/usb.h>
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+#include <linux/videodev2.h>
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+#include <linux/vmalloc.h>
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+#include <linux/wait.h>
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+#include <asm/atomic.h>
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+
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+#include <media/v4l2-common.h>
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+
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+#include "uvcvideo.h"
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+
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+#define DRIVER_AUTHOR "Laurent Pinchart <laurent.pinchart@skynet.be>"
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+#define DRIVER_DESC "USB Video Class driver"
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+#ifndef DRIVER_VERSION
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+#define DRIVER_VERSION "v0.1.0"
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+#endif
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+
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+static unsigned int uvc_quirks_param;
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+unsigned int uvc_trace_param;
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+
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+/* ------------------------------------------------------------------------
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+ * Control, formats, ...
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+ */
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+
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+static struct uvc_format_desc uvc_fmts[] = {
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+ {
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+ .name = "YUV 4:2:2 (YUYV)",
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+ .guid = UVC_GUID_FORMAT_YUY2,
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+ .fcc = V4L2_PIX_FMT_YUYV,
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+ },
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+ {
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+ .name = "YUV 4:2:0 (NV12)",
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+ .guid = UVC_GUID_FORMAT_NV12,
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+ .fcc = V4L2_PIX_FMT_NV12,
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+ },
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+ {
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+ .name = "MJPEG",
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+ .guid = UVC_GUID_FORMAT_MJPEG,
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+ .fcc = V4L2_PIX_FMT_MJPEG,
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+ },
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+ {
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+ .name = "YVU 4:2:0 (YV12)",
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+ .guid = UVC_GUID_FORMAT_YV12,
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+ .fcc = V4L2_PIX_FMT_YVU420,
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+ },
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+ {
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+ .name = "YUV 4:2:0 (I420)",
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+ .guid = UVC_GUID_FORMAT_I420,
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+ .fcc = V4L2_PIX_FMT_YUV420,
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+ },
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+ {
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+ .name = "YUV 4:2:2 (UYVY)",
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+ .guid = UVC_GUID_FORMAT_UYVY,
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+ .fcc = V4L2_PIX_FMT_UYVY,
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+ },
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+ {
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+ .name = "Greyscale",
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+ .guid = UVC_GUID_FORMAT_Y800,
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+ .fcc = V4L2_PIX_FMT_GREY,
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+ },
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+ {
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+ .name = "RGB Bayer",
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+ .guid = UVC_GUID_FORMAT_BY8,
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+ .fcc = V4L2_PIX_FMT_SBGGR8,
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+ },
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+};
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+
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+/* ------------------------------------------------------------------------
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+ * Utility functions
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+ */
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+
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+struct usb_host_endpoint *uvc_find_endpoint(struct usb_host_interface *alts,
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+ __u8 epaddr)
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+{
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+ struct usb_host_endpoint *ep;
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+ unsigned int i;
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+
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+ for (i = 0; i < alts->desc.bNumEndpoints; ++i) {
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+ ep = &alts->endpoint[i];
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+ if (ep->desc.bEndpointAddress == epaddr)
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+ return ep;
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+ }
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+
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+ return NULL;
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+}
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+
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+static struct uvc_format_desc *uvc_format_by_guid(const __u8 guid[16])
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+{
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+ unsigned int len = ARRAY_SIZE(uvc_fmts);
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+ unsigned int i;
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+
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+ for (i = 0; i < len; ++i) {
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+ if (memcmp(guid, uvc_fmts[i].guid, 16) == 0)
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+ return &uvc_fmts[i];
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+ }
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+
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+ return NULL;
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+}
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+
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+static __u32 uvc_colorspace(const __u8 primaries)
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+{
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+ static const __u8 colorprimaries[] = {
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+ 0,
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+ V4L2_COLORSPACE_SRGB,
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+ V4L2_COLORSPACE_470_SYSTEM_M,
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+ V4L2_COLORSPACE_470_SYSTEM_BG,
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+ V4L2_COLORSPACE_SMPTE170M,
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+ V4L2_COLORSPACE_SMPTE240M,
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+ };
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+
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+ if (primaries < ARRAY_SIZE(colorprimaries))
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+ return colorprimaries[primaries];
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+
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+ return 0;
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+}
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+
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+/* Simplify a fraction using a simple continued fraction decomposition. The
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+ * idea here is to convert fractions such as 333333/10000000 to 1/30 using
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+ * 32 bit arithmetic only. The algorithm is not perfect and relies upon two
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+ * arbitrary parameters to remove non-significative terms from the simple
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+ * continued fraction decomposition. Using 8 and 333 for n_terms and threshold
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+ * respectively seems to give nice results.
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+ */
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+void uvc_simplify_fraction(uint32_t *numerator, uint32_t *denominator,
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+ unsigned int n_terms, unsigned int threshold)
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+{
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+ uint32_t *an;
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+ uint32_t x, y, r;
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+ unsigned int i, n;
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+
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+ an = kmalloc(n_terms * sizeof *an, GFP_KERNEL);
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+ if (an == NULL)
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+ return;
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+
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+ /* Convert the fraction to a simple continued fraction. See
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+ * http://mathforum.org/dr.math/faq/faq.fractions.html
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+ * Stop if the current term is bigger than or equal to the given
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+ * threshold.
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+ */
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+ x = *numerator;
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+ y = *denominator;
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+
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+ for (n = 0; n < n_terms && y != 0; ++n) {
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+ an[n] = x / y;
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+ if (an[n] >= threshold) {
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+ if (n < 2)
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+ n++;
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+ break;
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+ }
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+
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+ r = x - an[n] * y;
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+ x = y;
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+ y = r;
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+ }
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+
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+ /* Expand the simple continued fraction back to an integer fraction. */
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+ x = 0;
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+ y = 1;
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+
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+ for (i = n; i > 0; --i) {
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+ r = y;
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+ y = an[i-1] * y + x;
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+ x = r;
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+ }
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+
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+ *numerator = y;
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+ *denominator = x;
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+ kfree(an);
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+}
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+
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+/* Convert a fraction to a frame interval in 100ns multiples. The idea here is
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+ * to compute numerator / denominator * 10000000 using 32 bit fixed point
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+ * arithmetic only.
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+ */
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+uint32_t uvc_fraction_to_interval(uint32_t numerator, uint32_t denominator)
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+{
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+ uint32_t multiplier;
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+
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+ /* Saturate the result if the operation would overflow. */
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+ if (denominator == 0 ||
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+ numerator/denominator >= ((uint32_t)-1)/10000000)
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+ return (uint32_t)-1;
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+
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+ /* Divide both the denominator and the multiplier by two until
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+ * numerator * multiplier doesn't overflow. If anyone knows a better
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+ * algorithm please let me know.
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+ */
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+ multiplier = 10000000;
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+ while (numerator > ((uint32_t)-1)/multiplier) {
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+ multiplier /= 2;
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+ denominator /= 2;
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+ }
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+
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+ return denominator ? numerator * multiplier / denominator : 0;
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+}
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+
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+/* ------------------------------------------------------------------------
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+ * Terminal and unit management
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+ */
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+
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+static struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id)
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+{
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+ struct uvc_entity *entity;
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+
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+ list_for_each_entry(entity, &dev->entities, list) {
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+ if (entity->id == id)
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+ return entity;
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+ }
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+
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+ return NULL;
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+}
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+
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+static struct uvc_entity *uvc_entity_by_reference(struct uvc_device *dev,
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+ int id, struct uvc_entity *entity)
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+{
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+ unsigned int i;
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+
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+ if (entity == NULL)
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+ entity = list_entry(&dev->entities, struct uvc_entity, list);
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+
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+ list_for_each_entry_continue(entity, &dev->entities, list) {
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+ switch (UVC_ENTITY_TYPE(entity)) {
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+ case TT_STREAMING:
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+ if (entity->output.bSourceID == id)
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+ return entity;
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+ break;
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+
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+ case VC_PROCESSING_UNIT:
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+ if (entity->processing.bSourceID == id)
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+ return entity;
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+ break;
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+
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+ case VC_SELECTOR_UNIT:
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+ for (i = 0; i < entity->selector.bNrInPins; ++i)
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+ if (entity->selector.baSourceID[i] == id)
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+ return entity;
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+ break;
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+
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+ case VC_EXTENSION_UNIT:
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+ for (i = 0; i < entity->extension.bNrInPins; ++i)
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+ if (entity->extension.baSourceID[i] == id)
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+ return entity;
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+ break;
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+ }
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+ }
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+
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+ return NULL;
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+}
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+
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+/* ------------------------------------------------------------------------
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+ * Descriptors handling
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+ */
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+
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+static int uvc_parse_format(struct uvc_device *dev,
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+ struct uvc_streaming *streaming, struct uvc_format *format,
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+ __u32 **intervals, unsigned char *buffer, int buflen)
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+{
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+ struct usb_interface *intf = streaming->intf;
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+ struct usb_host_interface *alts = intf->cur_altsetting;
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+ struct uvc_format_desc *fmtdesc;
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+ struct uvc_frame *frame;
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+ const unsigned char *start = buffer;
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+ unsigned int interval;
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+ unsigned int i, n;
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+ __u8 ftype;
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+
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+ format->type = buffer[2];
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+ format->index = buffer[3];
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+
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+ switch (buffer[2]) {
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+ case VS_FORMAT_UNCOMPRESSED:
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+ case VS_FORMAT_FRAME_BASED:
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+ if (buflen < 27) {
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+ uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming"
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+ "interface %d FORMAT error\n",
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+ dev->udev->devnum,
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+ alts->desc.bInterfaceNumber);
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+ return -EINVAL;
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+ }
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+
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+ /* Find the format descriptor from its GUID. */
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+ fmtdesc = uvc_format_by_guid(&buffer[5]);
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+
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+ if (fmtdesc != NULL) {
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+ strncpy(format->name, fmtdesc->name,
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+ sizeof format->name);
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+ format->fcc = fmtdesc->fcc;
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+ } else {
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+ uvc_printk(KERN_INFO, "Unknown video format "
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+ UVC_GUID_FORMAT "\n",
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+ UVC_GUID_ARGS(&buffer[5]));
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+ snprintf(format->name, sizeof format->name,
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+ UVC_GUID_FORMAT, UVC_GUID_ARGS(&buffer[5]));
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+ format->fcc = 0;
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+ }
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+
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+ format->bpp = buffer[21];
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+ if (buffer[2] == VS_FORMAT_UNCOMPRESSED) {
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+ ftype = VS_FRAME_UNCOMPRESSED;
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+ } else {
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+ ftype = VS_FRAME_FRAME_BASED;
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+ if (buffer[27])
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+ format->flags = UVC_FMT_FLAG_COMPRESSED;
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+ }
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+ break;
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+
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+ case VS_FORMAT_MJPEG:
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+ if (buflen < 11) {
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+ uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming"
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+ "interface %d FORMAT error\n",
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+ dev->udev->devnum,
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+ alts->desc.bInterfaceNumber);
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+ return -EINVAL;
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+ }
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+
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+ strncpy(format->name, "MJPEG", sizeof format->name);
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+ format->fcc = V4L2_PIX_FMT_MJPEG;
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+ format->flags = UVC_FMT_FLAG_COMPRESSED;
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+ format->bpp = 0;
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+ ftype = VS_FRAME_MJPEG;
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+ break;
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+
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+ case VS_FORMAT_DV:
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+ if (buflen < 9) {
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+ uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming"
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+ "interface %d FORMAT error\n",
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+ dev->udev->devnum,
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+ alts->desc.bInterfaceNumber);
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+ return -EINVAL;
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+ }
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+
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+ switch (buffer[8] & 0x7f) {
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|
|
|
+ case 0:
|
|
|
|
+ strncpy(format->name, "SD-DV", sizeof format->name);
|
|
|
|
+ break;
|
|
|
|
+ case 1:
|
|
|
|
+ strncpy(format->name, "SDL-DV", sizeof format->name);
|
|
|
|
+ break;
|
|
|
|
+ case 2:
|
|
|
|
+ strncpy(format->name, "HD-DV", sizeof format->name);
|
|
|
|
+ break;
|
|
|
|
+ default:
|
|
|
|
+ uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming"
|
|
|
|
+ "interface %d: unknown DV format %u\n",
|
|
|
|
+ dev->udev->devnum,
|
|
|
|
+ alts->desc.bInterfaceNumber, buffer[8]);
|
|
|
|
+ return -EINVAL;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ strncat(format->name, buffer[8] & (1 << 7) ? " 60Hz" : " 50Hz",
|
|
|
|
+ sizeof format->name);
|
|
|
|
+
|
|
|
|
+ format->fcc = V4L2_PIX_FMT_DV;
|
|
|
|
+ format->flags = UVC_FMT_FLAG_COMPRESSED | UVC_FMT_FLAG_STREAM;
|
|
|
|
+ format->bpp = 0;
|
|
|
|
+ ftype = 0;
|
|
|
|
+
|
|
|
|
+ /* Create a dummy frame descriptor. */
|
|
|
|
+ frame = &format->frame[0];
|
|
|
|
+ memset(&format->frame[0], 0, sizeof format->frame[0]);
|
|
|
|
+ frame->bFrameIntervalType = 1;
|
|
|
|
+ frame->dwDefaultFrameInterval = 1;
|
|
|
|
+ frame->dwFrameInterval = *intervals;
|
|
|
|
+ *(*intervals)++ = 1;
|
|
|
|
+ format->nframes = 1;
|
|
|
|
+ break;
|
|
|
|
+
|
|
|
|
+ case VS_FORMAT_MPEG2TS:
|
|
|
|
+ case VS_FORMAT_STREAM_BASED:
|
|
|
|
+ /* Not supported yet. */
|
|
|
|
+ default:
|
|
|
|
+ uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming"
|
|
|
|
+ "interface %d unsupported format %u\n",
|
|
|
|
+ dev->udev->devnum, alts->desc.bInterfaceNumber,
|
|
|
|
+ buffer[2]);
|
|
|
|
+ return -EINVAL;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ uvc_trace(UVC_TRACE_DESCR, "Found format %s.\n", format->name);
|
|
|
|
+
|
|
|
|
+ buflen -= buffer[0];
|
|
|
|
+ buffer += buffer[0];
|
|
|
|
+
|
|
|
|
+ /* Parse the frame descriptors. Only uncompressed, MJPEG and frame
|
|
|
|
+ * based formats have frame descriptors.
|
|
|
|
+ */
|
|
|
|
+ while (buflen > 2 && buffer[2] == ftype) {
|
|
|
|
+ frame = &format->frame[format->nframes];
|
|
|
|
+
|
|
|
|
+ if (ftype != VS_FRAME_FRAME_BASED)
|
|
|
|
+ n = buflen > 25 ? buffer[25] : 0;
|
|
|
|
+ else
|
|
|
|
+ n = buflen > 21 ? buffer[21] : 0;
|
|
|
|
+
|
|
|
|
+ n = n ? n : 3;
|
|
|
|
+
|
|
|
|
+ if (buflen < 26 + 4*n) {
|
|
|
|
+ uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming"
|
|
|
|
+ "interface %d FRAME error\n", dev->udev->devnum,
|
|
|
|
+ alts->desc.bInterfaceNumber);
|
|
|
|
+ return -EINVAL;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ frame->bFrameIndex = buffer[3];
|
|
|
|
+ frame->bmCapabilities = buffer[4];
|
|
|
|
+ frame->wWidth = le16_to_cpup((__le16 *)&buffer[5]);
|
|
|
|
+ frame->wHeight = le16_to_cpup((__le16 *)&buffer[7]);
|
|
|
|
+ frame->dwMinBitRate = le32_to_cpup((__le32 *)&buffer[9]);
|
|
|
|
+ frame->dwMaxBitRate = le32_to_cpup((__le32 *)&buffer[13]);
|
|
|
|
+ if (ftype != VS_FRAME_FRAME_BASED) {
|
|
|
|
+ frame->dwMaxVideoFrameBufferSize =
|
|
|
|
+ le32_to_cpup((__le32 *)&buffer[17]);
|
|
|
|
+ frame->dwDefaultFrameInterval =
|
|
|
|
+ le32_to_cpup((__le32 *)&buffer[21]);
|
|
|
|
+ frame->bFrameIntervalType = buffer[25];
|
|
|
|
+ } else {
|
|
|
|
+ frame->dwMaxVideoFrameBufferSize = 0;
|
|
|
|
+ frame->dwDefaultFrameInterval =
|
|
|
|
+ le32_to_cpup((__le32 *)&buffer[17]);
|
|
|
|
+ frame->bFrameIntervalType = buffer[21];
|
|
|
|
+ }
|
|
|
|
+ frame->dwFrameInterval = *intervals;
|
|
|
|
+
|
|
|
|
+ /* Several UVC chipsets screw up dwMaxVideoFrameBufferSize
|
|
|
|
+ * completely. Observed behaviours range from setting the
|
|
|
|
+ * value to 1.1x the actual frame size of hardwiring the
|
|
|
|
+ * 16 low bits to 0. This results in a higher than necessary
|
|
|
|
+ * memory usage as well as a wrong image size information. For
|
|
|
|
+ * uncompressed formats this can be fixed by computing the
|
|
|
|
+ * value from the frame size.
|
|
|
|
+ */
|
|
|
|
+ if (!(format->flags & UVC_FMT_FLAG_COMPRESSED))
|
|
|
|
+ frame->dwMaxVideoFrameBufferSize = format->bpp
|
|
|
|
+ * frame->wWidth * frame->wHeight / 8;
|
|
|
|
+
|
|
|
|
+ /* Some bogus devices report dwMinFrameInterval equal to
|
|
|
|
+ * dwMaxFrameInterval and have dwFrameIntervalStep set to
|
|
|
|
+ * zero. Setting all null intervals to 1 fixes the problem and
|
|
|
|
+ * some other divisions by zero which could happen.
|
|
|
|
+ */
|
|
|
|
+ for (i = 0; i < n; ++i) {
|
|
|
|
+ interval = le32_to_cpup((__le32 *)&buffer[26+4*i]);
|
|
|
|
+ *(*intervals)++ = interval ? interval : 1;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ /* Make sure that the default frame interval stays between
|
|
|
|
+ * the boundaries.
|
|
|
|
+ */
|
|
|
|
+ n -= frame->bFrameIntervalType ? 1 : 2;
|
|
|
|
+ frame->dwDefaultFrameInterval =
|
|
|
|
+ min(frame->dwFrameInterval[n],
|
|
|
|
+ max(frame->dwFrameInterval[0],
|
|
|
|
+ frame->dwDefaultFrameInterval));
|
|
|
|
+
|
|
|
|
+ uvc_trace(UVC_TRACE_DESCR, "- %ux%u (%u.%u fps)\n",
|
|
|
|
+ frame->wWidth, frame->wHeight,
|
|
|
|
+ 10000000/frame->dwDefaultFrameInterval,
|
|
|
|
+ (100000000/frame->dwDefaultFrameInterval)%10);
|
|
|
|
+
|
|
|
|
+ format->nframes++;
|
|
|
|
+ buflen -= buffer[0];
|
|
|
|
+ buffer += buffer[0];
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ if (buflen > 2 && buffer[2] == VS_STILL_IMAGE_FRAME) {
|
|
|
|
+ buflen -= buffer[0];
|
|
|
|
+ buffer += buffer[0];
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ if (buflen > 2 && buffer[2] == VS_COLORFORMAT) {
|
|
|
|
+ if (buflen < 6) {
|
|
|
|
+ uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming"
|
|
|
|
+ "interface %d COLORFORMAT error\n",
|
|
|
|
+ dev->udev->devnum,
|
|
|
|
+ alts->desc.bInterfaceNumber);
|
|
|
|
+ return -EINVAL;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ format->colorspace = uvc_colorspace(buffer[3]);
|
|
|
|
+
|
|
|
|
+ buflen -= buffer[0];
|
|
|
|
+ buffer += buffer[0];
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ return buffer - start;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static int uvc_parse_streaming(struct uvc_device *dev,
|
|
|
|
+ struct usb_interface *intf)
|
|
|
|
+{
|
|
|
|
+ struct uvc_streaming *streaming = NULL;
|
|
|
|
+ struct uvc_format *format;
|
|
|
|
+ struct uvc_frame *frame;
|
|
|
|
+ struct usb_host_interface *alts = &intf->altsetting[0];
|
|
|
|
+ unsigned char *_buffer, *buffer = alts->extra;
|
|
|
|
+ int _buflen, buflen = alts->extralen;
|
|
|
|
+ unsigned int nformats = 0, nframes = 0, nintervals = 0;
|
|
|
|
+ unsigned int size, i, n, p;
|
|
|
|
+ __u32 *interval;
|
|
|
|
+ __u16 psize;
|
|
|
|
+ int ret = -EINVAL;
|
|
|
|
+
|
|
|
|
+ if (intf->cur_altsetting->desc.bInterfaceSubClass
|
|
|
|
+ != SC_VIDEOSTREAMING) {
|
|
|
|
+ uvc_trace(UVC_TRACE_DESCR, "device %d interface %d isn't a "
|
|
|
|
+ "video streaming interface\n", dev->udev->devnum,
|
|
|
|
+ intf->altsetting[0].desc.bInterfaceNumber);
|
|
|
|
+ return -EINVAL;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ if (usb_driver_claim_interface(&uvc_driver.driver, intf, dev)) {
|
|
|
|
+ uvc_trace(UVC_TRACE_DESCR, "device %d interface %d is already "
|
|
|
|
+ "claimed\n", dev->udev->devnum,
|
|
|
|
+ intf->altsetting[0].desc.bInterfaceNumber);
|
|
|
|
+ return -EINVAL;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ streaming = kzalloc(sizeof *streaming, GFP_KERNEL);
|
|
|
|
+ if (streaming == NULL) {
|
|
|
|
+ usb_driver_release_interface(&uvc_driver.driver, intf);
|
|
|
|
+ return -EINVAL;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ mutex_init(&streaming->mutex);
|
|
|
|
+ streaming->intf = usb_get_intf(intf);
|
|
|
|
+ streaming->intfnum = intf->cur_altsetting->desc.bInterfaceNumber;
|
|
|
|
+
|
|
|
|
+ /* The Pico iMage webcam has its class-specific interface descriptors
|
|
|
|
+ * after the endpoint descriptors.
|
|
|
|
+ */
|
|
|
|
+ if (buflen == 0) {
|
|
|
|
+ for (i = 0; i < alts->desc.bNumEndpoints; ++i) {
|
|
|
|
+ struct usb_host_endpoint *ep = &alts->endpoint[i];
|
|
|
|
+
|
|
|
|
+ if (ep->extralen == 0)
|
|
|
|
+ continue;
|
|
|
|
+
|
|
|
|
+ if (ep->extralen > 2 &&
|
|
|
|
+ ep->extra[1] == USB_DT_CS_INTERFACE) {
|
|
|
|
+ uvc_trace(UVC_TRACE_DESCR, "trying extra data "
|
|
|
|
+ "from endpoint %u.\n", i);
|
|
|
|
+ buffer = alts->endpoint[i].extra;
|
|
|
|
+ buflen = alts->endpoint[i].extralen;
|
|
|
|
+ break;
|
|
|
|
+ }
|
|
|
|
+ }
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ /* Skip the standard interface descriptors. */
|
|
|
|
+ while (buflen > 2 && buffer[1] != USB_DT_CS_INTERFACE) {
|
|
|
|
+ buflen -= buffer[0];
|
|
|
|
+ buffer += buffer[0];
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ if (buflen <= 2) {
|
|
|
|
+ uvc_trace(UVC_TRACE_DESCR, "no class-specific streaming "
|
|
|
|
+ "interface descriptors found.\n");
|
|
|
|
+ goto error;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ /* Parse the header descriptor. */
|
|
|
|
+ if (buffer[2] == VS_OUTPUT_HEADER) {
|
|
|
|
+ uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface "
|
|
|
|
+ "%d OUTPUT HEADER descriptor is not supported.\n",
|
|
|
|
+ dev->udev->devnum, alts->desc.bInterfaceNumber);
|
|
|
|
+ goto error;
|
|
|
|
+ } else if (buffer[2] == VS_INPUT_HEADER) {
|
|
|
|
+ p = buflen >= 5 ? buffer[3] : 0;
|
|
|
|
+ n = buflen >= 12 ? buffer[12] : 0;
|
|
|
|
+
|
|
|
|
+ if (buflen < 13 + p*n || buffer[2] != VS_INPUT_HEADER) {
|
|
|
|
+ uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
|
|
|
|
+ "interface %d INPUT HEADER descriptor is "
|
|
|
|
+ "invalid.\n", dev->udev->devnum,
|
|
|
|
+ alts->desc.bInterfaceNumber);
|
|
|
|
+ goto error;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ streaming->header.bNumFormats = p;
|
|
|
|
+ streaming->header.bEndpointAddress = buffer[6];
|
|
|
|
+ streaming->header.bmInfo = buffer[7];
|
|
|
|
+ streaming->header.bTerminalLink = buffer[8];
|
|
|
|
+ streaming->header.bStillCaptureMethod = buffer[9];
|
|
|
|
+ streaming->header.bTriggerSupport = buffer[10];
|
|
|
|
+ streaming->header.bTriggerUsage = buffer[11];
|
|
|
|
+ streaming->header.bControlSize = n;
|
|
|
|
+
|
|
|
|
+ streaming->header.bmaControls = kmalloc(p*n, GFP_KERNEL);
|
|
|
|
+ if (streaming->header.bmaControls == NULL) {
|
|
|
|
+ ret = -ENOMEM;
|
|
|
|
+ goto error;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ memcpy(streaming->header.bmaControls, &buffer[13], p*n);
|
|
|
|
+ } else {
|
|
|
|
+ uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface "
|
|
|
|
+ "%d HEADER descriptor not found.\n", dev->udev->devnum,
|
|
|
|
+ alts->desc.bInterfaceNumber);
|
|
|
|
+ goto error;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ buflen -= buffer[0];
|
|
|
|
+ buffer += buffer[0];
|
|
|
|
+
|
|
|
|
+ _buffer = buffer;
|
|
|
|
+ _buflen = buflen;
|
|
|
|
+
|
|
|
|
+ /* Count the format and frame descriptors. */
|
|
|
|
+ while (_buflen > 2) {
|
|
|
|
+ switch (_buffer[2]) {
|
|
|
|
+ case VS_FORMAT_UNCOMPRESSED:
|
|
|
|
+ case VS_FORMAT_MJPEG:
|
|
|
|
+ case VS_FORMAT_FRAME_BASED:
|
|
|
|
+ nformats++;
|
|
|
|
+ break;
|
|
|
|
+
|
|
|
|
+ case VS_FORMAT_DV:
|
|
|
|
+ /* DV format has no frame descriptor. We will create a
|
|
|
|
+ * dummy frame descriptor with a dummy frame interval.
|
|
|
|
+ */
|
|
|
|
+ nformats++;
|
|
|
|
+ nframes++;
|
|
|
|
+ nintervals++;
|
|
|
|
+ break;
|
|
|
|
+
|
|
|
|
+ case VS_FORMAT_MPEG2TS:
|
|
|
|
+ case VS_FORMAT_STREAM_BASED:
|
|
|
|
+ uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
|
|
|
|
+ "interface %d FORMAT %u is not supported.\n",
|
|
|
|
+ dev->udev->devnum,
|
|
|
|
+ alts->desc.bInterfaceNumber, _buffer[2]);
|
|
|
|
+ break;
|
|
|
|
+
|
|
|
|
+ case VS_FRAME_UNCOMPRESSED:
|
|
|
|
+ case VS_FRAME_MJPEG:
|
|
|
|
+ nframes++;
|
|
|
|
+ if (_buflen > 25)
|
|
|
|
+ nintervals += _buffer[25] ? _buffer[25] : 3;
|
|
|
|
+ break;
|
|
|
|
+
|
|
|
|
+ case VS_FRAME_FRAME_BASED:
|
|
|
|
+ nframes++;
|
|
|
|
+ if (_buflen > 21)
|
|
|
|
+ nintervals += _buffer[21] ? _buffer[21] : 3;
|
|
|
|
+ break;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ _buflen -= _buffer[0];
|
|
|
|
+ _buffer += _buffer[0];
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ if (nformats == 0) {
|
|
|
|
+ uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface "
|
|
|
|
+ "%d has no supported formats defined.\n",
|
|
|
|
+ dev->udev->devnum, alts->desc.bInterfaceNumber);
|
|
|
|
+ goto error;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ size = nformats * sizeof *format + nframes * sizeof *frame
|
|
|
|
+ + nintervals * sizeof *interval;
|
|
|
|
+ format = kzalloc(size, GFP_KERNEL);
|
|
|
|
+ if (format == NULL) {
|
|
|
|
+ ret = -ENOMEM;
|
|
|
|
+ goto error;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ frame = (struct uvc_frame *)&format[nformats];
|
|
|
|
+ interval = (__u32 *)&frame[nframes];
|
|
|
|
+
|
|
|
|
+ streaming->format = format;
|
|
|
|
+ streaming->nformats = nformats;
|
|
|
|
+
|
|
|
|
+ /* Parse the format descriptors. */
|
|
|
|
+ while (buflen > 2) {
|
|
|
|
+ switch (buffer[2]) {
|
|
|
|
+ case VS_FORMAT_UNCOMPRESSED:
|
|
|
|
+ case VS_FORMAT_MJPEG:
|
|
|
|
+ case VS_FORMAT_DV:
|
|
|
|
+ case VS_FORMAT_FRAME_BASED:
|
|
|
|
+ format->frame = frame;
|
|
|
|
+ ret = uvc_parse_format(dev, streaming, format,
|
|
|
|
+ &interval, buffer, buflen);
|
|
|
|
+ if (ret < 0)
|
|
|
|
+ goto error;
|
|
|
|
+
|
|
|
|
+ frame += format->nframes;
|
|
|
|
+ format++;
|
|
|
|
+
|
|
|
|
+ buflen -= ret;
|
|
|
|
+ buffer += ret;
|
|
|
|
+ continue;
|
|
|
|
+
|
|
|
|
+ default:
|
|
|
|
+ break;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ buflen -= buffer[0];
|
|
|
|
+ buffer += buffer[0];
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ /* Parse the alternate settings to find the maximum bandwidth. */
|
|
|
|
+ for (i = 0; i < intf->num_altsetting; ++i) {
|
|
|
|
+ struct usb_host_endpoint *ep;
|
|
|
|
+ alts = &intf->altsetting[i];
|
|
|
|
+ ep = uvc_find_endpoint(alts,
|
|
|
|
+ streaming->header.bEndpointAddress);
|
|
|
|
+ if (ep == NULL)
|
|
|
|
+ continue;
|
|
|
|
+
|
|
|
|
+ psize = le16_to_cpu(ep->desc.wMaxPacketSize);
|
|
|
|
+ psize = (psize & 0x07ff) * (1 + ((psize >> 11) & 3));
|
|
|
|
+ if (psize > streaming->maxpsize)
|
|
|
|
+ streaming->maxpsize = psize;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ list_add_tail(&streaming->list, &dev->streaming);
|
|
|
|
+ return 0;
|
|
|
|
+
|
|
|
|
+error:
|
|
|
|
+ usb_driver_release_interface(&uvc_driver.driver, intf);
|
|
|
|
+ usb_put_intf(intf);
|
|
|
|
+ kfree(streaming->format);
|
|
|
|
+ kfree(streaming->header.bmaControls);
|
|
|
|
+ kfree(streaming);
|
|
|
|
+ return ret;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+/* Parse vendor-specific extensions. */
|
|
|
|
+static int uvc_parse_vendor_control(struct uvc_device *dev,
|
|
|
|
+ const unsigned char *buffer, int buflen)
|
|
|
|
+{
|
|
|
|
+ struct usb_device *udev = dev->udev;
|
|
|
|
+ struct usb_host_interface *alts = dev->intf->cur_altsetting;
|
|
|
|
+ struct uvc_entity *unit;
|
|
|
|
+ unsigned int n, p;
|
|
|
|
+ int handled = 0;
|
|
|
|
+
|
|
|
|
+ switch (le16_to_cpu(dev->udev->descriptor.idVendor)) {
|
|
|
|
+ case 0x046d: /* Logitech */
|
|
|
|
+ if (buffer[1] != 0x41 || buffer[2] != 0x01)
|
|
|
|
+ break;
|
|
|
|
+
|
|
|
|
+ /* Logitech implements several vendor specific functions
|
|
|
|
+ * through vendor specific extension units (LXU).
|
|
|
|
+ *
|
|
|
|
+ * The LXU descriptors are similar to XU descriptors
|
|
|
|
+ * (see "USB Device Video Class for Video Devices", section
|
|
|
|
+ * 3.7.2.6 "Extension Unit Descriptor") with the following
|
|
|
|
+ * differences:
|
|
|
|
+ *
|
|
|
|
+ * ----------------------------------------------------------
|
|
|
|
+ * 0 bLength 1 Number
|
|
|
|
+ * Size of this descriptor, in bytes: 24+p+n*2
|
|
|
|
+ * ----------------------------------------------------------
|
|
|
|
+ * 23+p+n bmControlsType N Bitmap
|
|
|
|
+ * Individual bits in the set are defined:
|
|
|
|
+ * 0: Absolute
|
|
|
|
+ * 1: Relative
|
|
|
|
+ *
|
|
|
|
+ * This bitset is mapped exactly the same as bmControls.
|
|
|
|
+ * ----------------------------------------------------------
|
|
|
|
+ * 23+p+n*2 bReserved 1 Boolean
|
|
|
|
+ * ----------------------------------------------------------
|
|
|
|
+ * 24+p+n*2 iExtension 1 Index
|
|
|
|
+ * Index of a string descriptor that describes this
|
|
|
|
+ * extension unit.
|
|
|
|
+ * ----------------------------------------------------------
|
|
|
|
+ */
|
|
|
|
+ p = buflen >= 22 ? buffer[21] : 0;
|
|
|
|
+ n = buflen >= 25 + p ? buffer[22+p] : 0;
|
|
|
|
+
|
|
|
|
+ if (buflen < 25 + p + 2*n) {
|
|
|
|
+ uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
|
|
|
|
+ "interface %d EXTENSION_UNIT error\n",
|
|
|
|
+ udev->devnum, alts->desc.bInterfaceNumber);
|
|
|
|
+ break;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ unit = kzalloc(sizeof *unit + p + 2*n, GFP_KERNEL);
|
|
|
|
+ if (unit == NULL)
|
|
|
|
+ return -ENOMEM;
|
|
|
|
+
|
|
|
|
+ unit->id = buffer[3];
|
|
|
|
+ unit->type = VC_EXTENSION_UNIT;
|
|
|
|
+ memcpy(unit->extension.guidExtensionCode, &buffer[4], 16);
|
|
|
|
+ unit->extension.bNumControls = buffer[20];
|
|
|
|
+ unit->extension.bNrInPins =
|
|
|
|
+ le16_to_cpup((__le16 *)&buffer[21]);
|
|
|
|
+ unit->extension.baSourceID = (__u8 *)unit + sizeof *unit;
|
|
|
|
+ memcpy(unit->extension.baSourceID, &buffer[22], p);
|
|
|
|
+ unit->extension.bControlSize = buffer[22+p];
|
|
|
|
+ unit->extension.bmControls = (__u8 *)unit + sizeof *unit + p;
|
|
|
|
+ unit->extension.bmControlsType = (__u8 *)unit + sizeof *unit
|
|
|
|
+ + p + n;
|
|
|
|
+ memcpy(unit->extension.bmControls, &buffer[23+p], 2*n);
|
|
|
|
+
|
|
|
|
+ if (buffer[24+p+2*n] != 0)
|
|
|
|
+ usb_string(udev, buffer[24+p+2*n], unit->name,
|
|
|
|
+ sizeof unit->name);
|
|
|
|
+ else
|
|
|
|
+ sprintf(unit->name, "Extension %u", buffer[3]);
|
|
|
|
+
|
|
|
|
+ list_add_tail(&unit->list, &dev->entities);
|
|
|
|
+ handled = 1;
|
|
|
|
+ break;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ return handled;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static int uvc_parse_standard_control(struct uvc_device *dev,
|
|
|
|
+ const unsigned char *buffer, int buflen)
|
|
|
|
+{
|
|
|
|
+ struct usb_device *udev = dev->udev;
|
|
|
|
+ struct uvc_entity *unit, *term;
|
|
|
|
+ struct usb_interface *intf;
|
|
|
|
+ struct usb_host_interface *alts = dev->intf->cur_altsetting;
|
|
|
|
+ unsigned int i, n, p, len;
|
|
|
|
+ __u16 type;
|
|
|
|
+
|
|
|
|
+ switch (buffer[2]) {
|
|
|
|
+ case VC_HEADER:
|
|
|
|
+ n = buflen >= 12 ? buffer[11] : 0;
|
|
|
|
+
|
|
|
|
+ if (buflen < 12 || buflen < 12 + n) {
|
|
|
|
+ uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
|
|
|
|
+ "interface %d HEADER error\n", udev->devnum,
|
|
|
|
+ alts->desc.bInterfaceNumber);
|
|
|
|
+ return -EINVAL;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ dev->uvc_version = le16_to_cpup((__le16 *)&buffer[3]);
|
|
|
|
+ dev->clock_frequency = le32_to_cpup((__le32 *)&buffer[7]);
|
|
|
|
+
|
|
|
|
+ /* Parse all USB Video Streaming interfaces. */
|
|
|
|
+ for (i = 0; i < n; ++i) {
|
|
|
|
+ intf = usb_ifnum_to_if(udev, buffer[12+i]);
|
|
|
|
+ if (intf == NULL) {
|
|
|
|
+ uvc_trace(UVC_TRACE_DESCR, "device %d "
|
|
|
|
+ "interface %d doesn't exists\n",
|
|
|
|
+ udev->devnum, i);
|
|
|
|
+ continue;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ uvc_parse_streaming(dev, intf);
|
|
|
|
+ }
|
|
|
|
+ break;
|
|
|
|
+
|
|
|
|
+ case VC_INPUT_TERMINAL:
|
|
|
|
+ if (buflen < 8) {
|
|
|
|
+ uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
|
|
|
|
+ "interface %d INPUT_TERMINAL error\n",
|
|
|
|
+ udev->devnum, alts->desc.bInterfaceNumber);
|
|
|
|
+ return -EINVAL;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ /* Make sure the terminal type MSB is not null, otherwise it
|
|
|
|
+ * could be confused with a unit.
|
|
|
|
+ */
|
|
|
|
+ type = le16_to_cpup((__le16 *)&buffer[4]);
|
|
|
|
+ if ((type & 0xff00) == 0) {
|
|
|
|
+ uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
|
|
|
|
+ "interface %d INPUT_TERMINAL %d has invalid "
|
|
|
|
+ "type 0x%04x, skipping\n", udev->devnum,
|
|
|
|
+ alts->desc.bInterfaceNumber,
|
|
|
|
+ buffer[3], type);
|
|
|
|
+ return 0;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ n = 0;
|
|
|
|
+ p = 0;
|
|
|
|
+ len = 8;
|
|
|
|
+
|
|
|
|
+ if (type == ITT_CAMERA) {
|
|
|
|
+ n = buflen >= 15 ? buffer[14] : 0;
|
|
|
|
+ len = 15;
|
|
|
|
+
|
|
|
|
+ } else if (type == ITT_MEDIA_TRANSPORT_INPUT) {
|
|
|
|
+ n = buflen >= 9 ? buffer[8] : 0;
|
|
|
|
+ p = buflen >= 10 + n ? buffer[9+n] : 0;
|
|
|
|
+ len = 10;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ if (buflen < len + n + p) {
|
|
|
|
+ uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
|
|
|
|
+ "interface %d INPUT_TERMINAL error\n",
|
|
|
|
+ udev->devnum, alts->desc.bInterfaceNumber);
|
|
|
|
+ return -EINVAL;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ term = kzalloc(sizeof *term + n + p, GFP_KERNEL);
|
|
|
|
+ if (term == NULL)
|
|
|
|
+ return -ENOMEM;
|
|
|
|
+
|
|
|
|
+ term->id = buffer[3];
|
|
|
|
+ term->type = type | UVC_TERM_INPUT;
|
|
|
|
+
|
|
|
|
+ if (UVC_ENTITY_TYPE(term) == ITT_CAMERA) {
|
|
|
|
+ term->camera.bControlSize = n;
|
|
|
|
+ term->camera.bmControls = (__u8 *)term + sizeof *term;
|
|
|
|
+ term->camera.wObjectiveFocalLengthMin =
|
|
|
|
+ le16_to_cpup((__le16 *)&buffer[8]);
|
|
|
|
+ term->camera.wObjectiveFocalLengthMax =
|
|
|
|
+ le16_to_cpup((__le16 *)&buffer[10]);
|
|
|
|
+ term->camera.wOcularFocalLength =
|
|
|
|
+ le16_to_cpup((__le16 *)&buffer[12]);
|
|
|
|
+ memcpy(term->camera.bmControls, &buffer[15], n);
|
|
|
|
+ } else if (UVC_ENTITY_TYPE(term) == ITT_MEDIA_TRANSPORT_INPUT) {
|
|
|
|
+ term->media.bControlSize = n;
|
|
|
|
+ term->media.bmControls = (__u8 *)term + sizeof *term;
|
|
|
|
+ term->media.bTransportModeSize = p;
|
|
|
|
+ term->media.bmTransportModes = (__u8 *)term
|
|
|
|
+ + sizeof *term + n;
|
|
|
|
+ memcpy(term->media.bmControls, &buffer[9], n);
|
|
|
|
+ memcpy(term->media.bmTransportModes, &buffer[10+n], p);
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ if (buffer[7] != 0)
|
|
|
|
+ usb_string(udev, buffer[7], term->name,
|
|
|
|
+ sizeof term->name);
|
|
|
|
+ else if (UVC_ENTITY_TYPE(term) == ITT_CAMERA)
|
|
|
|
+ sprintf(term->name, "Camera %u", buffer[3]);
|
|
|
|
+ else if (UVC_ENTITY_TYPE(term) == ITT_MEDIA_TRANSPORT_INPUT)
|
|
|
|
+ sprintf(term->name, "Media %u", buffer[3]);
|
|
|
|
+ else
|
|
|
|
+ sprintf(term->name, "Input %u", buffer[3]);
|
|
|
|
+
|
|
|
|
+ list_add_tail(&term->list, &dev->entities);
|
|
|
|
+ break;
|
|
|
|
+
|
|
|
|
+ case VC_OUTPUT_TERMINAL:
|
|
|
|
+ if (buflen < 9) {
|
|
|
|
+ uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
|
|
|
|
+ "interface %d OUTPUT_TERMINAL error\n",
|
|
|
|
+ udev->devnum, alts->desc.bInterfaceNumber);
|
|
|
|
+ return -EINVAL;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ /* Make sure the terminal type MSB is not null, otherwise it
|
|
|
|
+ * could be confused with a unit.
|
|
|
|
+ */
|
|
|
|
+ type = le16_to_cpup((__le16 *)&buffer[4]);
|
|
|
|
+ if ((type & 0xff00) == 0) {
|
|
|
|
+ uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
|
|
|
|
+ "interface %d OUTPUT_TERMINAL %d has invalid "
|
|
|
|
+ "type 0x%04x, skipping\n", udev->devnum,
|
|
|
|
+ alts->desc.bInterfaceNumber, buffer[3], type);
|
|
|
|
+ return 0;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ term = kzalloc(sizeof *term, GFP_KERNEL);
|
|
|
|
+ if (term == NULL)
|
|
|
|
+ return -ENOMEM;
|
|
|
|
+
|
|
|
|
+ term->id = buffer[3];
|
|
|
|
+ term->type = type | UVC_TERM_OUTPUT;
|
|
|
|
+ term->output.bSourceID = buffer[7];
|
|
|
|
+
|
|
|
|
+ if (buffer[8] != 0)
|
|
|
|
+ usb_string(udev, buffer[8], term->name,
|
|
|
|
+ sizeof term->name);
|
|
|
|
+ else
|
|
|
|
+ sprintf(term->name, "Output %u", buffer[3]);
|
|
|
|
+
|
|
|
|
+ list_add_tail(&term->list, &dev->entities);
|
|
|
|
+ break;
|
|
|
|
+
|
|
|
|
+ case VC_SELECTOR_UNIT:
|
|
|
|
+ p = buflen >= 5 ? buffer[4] : 0;
|
|
|
|
+
|
|
|
|
+ if (buflen < 5 || buflen < 6 + p) {
|
|
|
|
+ uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
|
|
|
|
+ "interface %d SELECTOR_UNIT error\n",
|
|
|
|
+ udev->devnum, alts->desc.bInterfaceNumber);
|
|
|
|
+ return -EINVAL;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ unit = kzalloc(sizeof *unit + p, GFP_KERNEL);
|
|
|
|
+ if (unit == NULL)
|
|
|
|
+ return -ENOMEM;
|
|
|
|
+
|
|
|
|
+ unit->id = buffer[3];
|
|
|
|
+ unit->type = buffer[2];
|
|
|
|
+ unit->selector.bNrInPins = buffer[4];
|
|
|
|
+ unit->selector.baSourceID = (__u8 *)unit + sizeof *unit;
|
|
|
|
+ memcpy(unit->selector.baSourceID, &buffer[5], p);
|
|
|
|
+
|
|
|
|
+ if (buffer[5+p] != 0)
|
|
|
|
+ usb_string(udev, buffer[5+p], unit->name,
|
|
|
|
+ sizeof unit->name);
|
|
|
|
+ else
|
|
|
|
+ sprintf(unit->name, "Selector %u", buffer[3]);
|
|
|
|
+
|
|
|
|
+ list_add_tail(&unit->list, &dev->entities);
|
|
|
|
+ break;
|
|
|
|
+
|
|
|
|
+ case VC_PROCESSING_UNIT:
|
|
|
|
+ n = buflen >= 8 ? buffer[7] : 0;
|
|
|
|
+ p = dev->uvc_version >= 0x0110 ? 10 : 9;
|
|
|
|
+
|
|
|
|
+ if (buflen < p + n) {
|
|
|
|
+ uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
|
|
|
|
+ "interface %d PROCESSING_UNIT error\n",
|
|
|
|
+ udev->devnum, alts->desc.bInterfaceNumber);
|
|
|
|
+ return -EINVAL;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ unit = kzalloc(sizeof *unit + n, GFP_KERNEL);
|
|
|
|
+ if (unit == NULL)
|
|
|
|
+ return -ENOMEM;
|
|
|
|
+
|
|
|
|
+ unit->id = buffer[3];
|
|
|
|
+ unit->type = buffer[2];
|
|
|
|
+ unit->processing.bSourceID = buffer[4];
|
|
|
|
+ unit->processing.wMaxMultiplier =
|
|
|
|
+ le16_to_cpup((__le16 *)&buffer[5]);
|
|
|
|
+ unit->processing.bControlSize = buffer[7];
|
|
|
|
+ unit->processing.bmControls = (__u8 *)unit + sizeof *unit;
|
|
|
|
+ memcpy(unit->processing.bmControls, &buffer[8], n);
|
|
|
|
+ if (dev->uvc_version >= 0x0110)
|
|
|
|
+ unit->processing.bmVideoStandards = buffer[9+n];
|
|
|
|
+
|
|
|
|
+ if (buffer[8+n] != 0)
|
|
|
|
+ usb_string(udev, buffer[8+n], unit->name,
|
|
|
|
+ sizeof unit->name);
|
|
|
|
+ else
|
|
|
|
+ sprintf(unit->name, "Processing %u", buffer[3]);
|
|
|
|
+
|
|
|
|
+ list_add_tail(&unit->list, &dev->entities);
|
|
|
|
+ break;
|
|
|
|
+
|
|
|
|
+ case VC_EXTENSION_UNIT:
|
|
|
|
+ p = buflen >= 22 ? buffer[21] : 0;
|
|
|
|
+ n = buflen >= 24 + p ? buffer[22+p] : 0;
|
|
|
|
+
|
|
|
|
+ if (buflen < 24 + p + n) {
|
|
|
|
+ uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
|
|
|
|
+ "interface %d EXTENSION_UNIT error\n",
|
|
|
|
+ udev->devnum, alts->desc.bInterfaceNumber);
|
|
|
|
+ return -EINVAL;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ unit = kzalloc(sizeof *unit + p + n, GFP_KERNEL);
|
|
|
|
+ if (unit == NULL)
|
|
|
|
+ return -ENOMEM;
|
|
|
|
+
|
|
|
|
+ unit->id = buffer[3];
|
|
|
|
+ unit->type = buffer[2];
|
|
|
|
+ memcpy(unit->extension.guidExtensionCode, &buffer[4], 16);
|
|
|
|
+ unit->extension.bNumControls = buffer[20];
|
|
|
|
+ unit->extension.bNrInPins =
|
|
|
|
+ le16_to_cpup((__le16 *)&buffer[21]);
|
|
|
|
+ unit->extension.baSourceID = (__u8 *)unit + sizeof *unit;
|
|
|
|
+ memcpy(unit->extension.baSourceID, &buffer[22], p);
|
|
|
|
+ unit->extension.bControlSize = buffer[22+p];
|
|
|
|
+ unit->extension.bmControls = (__u8 *)unit + sizeof *unit + p;
|
|
|
|
+ memcpy(unit->extension.bmControls, &buffer[23+p], n);
|
|
|
|
+
|
|
|
|
+ if (buffer[23+p+n] != 0)
|
|
|
|
+ usb_string(udev, buffer[23+p+n], unit->name,
|
|
|
|
+ sizeof unit->name);
|
|
|
|
+ else
|
|
|
|
+ sprintf(unit->name, "Extension %u", buffer[3]);
|
|
|
|
+
|
|
|
|
+ list_add_tail(&unit->list, &dev->entities);
|
|
|
|
+ break;
|
|
|
|
+
|
|
|
|
+ default:
|
|
|
|
+ uvc_trace(UVC_TRACE_DESCR, "Found an unknown CS_INTERFACE "
|
|
|
|
+ "descriptor (%u)\n", buffer[2]);
|
|
|
|
+ break;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ return 0;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static int uvc_parse_control(struct uvc_device *dev)
|
|
|
|
+{
|
|
|
|
+ struct usb_host_interface *alts = dev->intf->cur_altsetting;
|
|
|
|
+ unsigned char *buffer = alts->extra;
|
|
|
|
+ int buflen = alts->extralen;
|
|
|
|
+ int ret;
|
|
|
|
+
|
|
|
|
+ /* Parse the default alternate setting only, as the UVC specification
|
|
|
|
+ * defines a single alternate setting, the default alternate setting
|
|
|
|
+ * zero.
|
|
|
|
+ */
|
|
|
|
+
|
|
|
|
+ while (buflen > 2) {
|
|
|
|
+ if (uvc_parse_vendor_control(dev, buffer, buflen) ||
|
|
|
|
+ buffer[1] != USB_DT_CS_INTERFACE)
|
|
|
|
+ goto next_descriptor;
|
|
|
|
+
|
|
|
|
+ if ((ret = uvc_parse_standard_control(dev, buffer, buflen)) < 0)
|
|
|
|
+ return ret;
|
|
|
|
+
|
|
|
|
+next_descriptor:
|
|
|
|
+ buflen -= buffer[0];
|
|
|
|
+ buffer += buffer[0];
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ /* Check if the optional status endpoint is present. */
|
|
|
|
+ if (alts->desc.bNumEndpoints == 1) {
|
|
|
|
+ struct usb_host_endpoint *ep = &alts->endpoint[0];
|
|
|
|
+ struct usb_endpoint_descriptor *desc = &ep->desc;
|
|
|
|
+
|
|
|
|
+ if (usb_endpoint_is_int_in(desc) &&
|
|
|
|
+ le16_to_cpu(desc->wMaxPacketSize) >= 8 &&
|
|
|
|
+ desc->bInterval != 0) {
|
|
|
|
+ uvc_trace(UVC_TRACE_DESCR, "Found a Status endpoint "
|
|
|
|
+ "(addr %02x).\n", desc->bEndpointAddress);
|
|
|
|
+ dev->int_ep = ep;
|
|
|
|
+ }
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ return 0;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+/* ------------------------------------------------------------------------
|
|
|
|
+ * USB probe and disconnect
|
|
|
|
+ */
|
|
|
|
+
|
|
|
|
+/*
|
|
|
|
+ * Unregister the video devices.
|
|
|
|
+ */
|
|
|
|
+static void uvc_unregister_video(struct uvc_device *dev)
|
|
|
|
+{
|
|
|
|
+ if (dev->video.vdev) {
|
|
|
|
+ if (dev->video.vdev->minor == -1)
|
|
|
|
+ video_device_release(dev->video.vdev);
|
|
|
|
+ else
|
|
|
|
+ video_unregister_device(dev->video.vdev);
|
|
|
|
+ dev->video.vdev = NULL;
|
|
|
|
+ }
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+/*
|
|
|
|
+ * Scan the UVC descriptors to locate a chain starting at an Output Terminal
|
|
|
|
+ * and containing the following units:
|
|
|
|
+ *
|
|
|
|
+ * - a USB Streaming Output Terminal
|
|
|
|
+ * - zero or one Processing Unit
|
|
|
|
+ * - zero, one or mode single-input Selector Units
|
|
|
|
+ * - zero or one multiple-input Selector Units, provided all inputs are
|
|
|
|
+ * connected to input terminals
|
|
|
|
+ * - zero, one or mode single-input Extension Units
|
|
|
|
+ * - one Camera Input Terminal, or one or more External terminals.
|
|
|
|
+ *
|
|
|
|
+ * A side forward scan is made on each detected entity to check for additional
|
|
|
|
+ * extension units.
|
|
|
|
+ */
|
|
|
|
+static int uvc_scan_chain_entity(struct uvc_video_device *video,
|
|
|
|
+ struct uvc_entity *entity)
|
|
|
|
+{
|
|
|
|
+ switch (UVC_ENTITY_TYPE(entity)) {
|
|
|
|
+ case VC_EXTENSION_UNIT:
|
|
|
|
+ if (uvc_trace_param & UVC_TRACE_PROBE)
|
|
|
|
+ printk(" <- XU %d", entity->id);
|
|
|
|
+
|
|
|
|
+ if (entity->extension.bNrInPins != 1) {
|
|
|
|
+ uvc_trace(UVC_TRACE_DESCR, "Extension unit %d has more "
|
|
|
|
+ "than 1 input pin.\n", entity->id);
|
|
|
|
+ return -1;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ list_add_tail(&entity->chain, &video->extensions);
|
|
|
|
+ break;
|
|
|
|
+
|
|
|
|
+ case VC_PROCESSING_UNIT:
|
|
|
|
+ if (uvc_trace_param & UVC_TRACE_PROBE)
|
|
|
|
+ printk(" <- PU %d", entity->id);
|
|
|
|
+
|
|
|
|
+ if (video->processing != NULL) {
|
|
|
|
+ uvc_trace(UVC_TRACE_DESCR, "Found multiple "
|
|
|
|
+ "Processing Units in chain.\n");
|
|
|
|
+ return -1;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ video->processing = entity;
|
|
|
|
+ break;
|
|
|
|
+
|
|
|
|
+ case VC_SELECTOR_UNIT:
|
|
|
|
+ if (uvc_trace_param & UVC_TRACE_PROBE)
|
|
|
|
+ printk(" <- SU %d", entity->id);
|
|
|
|
+
|
|
|
|
+ /* Single-input selector units are ignored. */
|
|
|
|
+ if (entity->selector.bNrInPins == 1)
|
|
|
|
+ break;
|
|
|
|
+
|
|
|
|
+ if (video->selector != NULL) {
|
|
|
|
+ uvc_trace(UVC_TRACE_DESCR, "Found multiple Selector "
|
|
|
|
+ "Units in chain.\n");
|
|
|
|
+ return -1;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ video->selector = entity;
|
|
|
|
+ break;
|
|
|
|
+
|
|
|
|
+ case ITT_VENDOR_SPECIFIC:
|
|
|
|
+ case ITT_CAMERA:
|
|
|
|
+ case ITT_MEDIA_TRANSPORT_INPUT:
|
|
|
|
+ if (uvc_trace_param & UVC_TRACE_PROBE)
|
|
|
|
+ printk(" <- IT %d\n", entity->id);
|
|
|
|
+
|
|
|
|
+ list_add_tail(&entity->chain, &video->iterms);
|
|
|
|
+ break;
|
|
|
|
+
|
|
|
|
+ default:
|
|
|
|
+ uvc_trace(UVC_TRACE_DESCR, "Unsupported entity type "
|
|
|
|
+ "0x%04x found in chain.\n", UVC_ENTITY_TYPE(entity));
|
|
|
|
+ return -1;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ return 0;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static int uvc_scan_chain_forward(struct uvc_video_device *video,
|
|
|
|
+ struct uvc_entity *entity, struct uvc_entity *prev)
|
|
|
|
+{
|
|
|
|
+ struct uvc_entity *forward;
|
|
|
|
+ int found;
|
|
|
|
+
|
|
|
|
+ /* Forward scan */
|
|
|
|
+ forward = NULL;
|
|
|
|
+ found = 0;
|
|
|
|
+
|
|
|
|
+ while (1) {
|
|
|
|
+ forward = uvc_entity_by_reference(video->dev, entity->id,
|
|
|
|
+ forward);
|
|
|
|
+ if (forward == NULL)
|
|
|
|
+ break;
|
|
|
|
+
|
|
|
|
+ if (UVC_ENTITY_TYPE(forward) != VC_EXTENSION_UNIT ||
|
|
|
|
+ forward == prev)
|
|
|
|
+ continue;
|
|
|
|
+
|
|
|
|
+ if (forward->extension.bNrInPins != 1) {
|
|
|
|
+ uvc_trace(UVC_TRACE_DESCR, "Extension unit %d has"
|
|
|
|
+ "more than 1 input pin.\n", entity->id);
|
|
|
|
+ return -1;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ list_add_tail(&forward->chain, &video->extensions);
|
|
|
|
+ if (uvc_trace_param & UVC_TRACE_PROBE) {
|
|
|
|
+ if (!found)
|
|
|
|
+ printk(" (-> XU");
|
|
|
|
+
|
|
|
|
+ printk(" %d", forward->id);
|
|
|
|
+ found = 1;
|
|
|
|
+ }
|
|
|
|
+ }
|
|
|
|
+ if (found)
|
|
|
|
+ printk(")");
|
|
|
|
+
|
|
|
|
+ return 0;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static int uvc_scan_chain_backward(struct uvc_video_device *video,
|
|
|
|
+ struct uvc_entity *entity)
|
|
|
|
+{
|
|
|
|
+ struct uvc_entity *term;
|
|
|
|
+ int id = -1, i;
|
|
|
|
+
|
|
|
|
+ switch (UVC_ENTITY_TYPE(entity)) {
|
|
|
|
+ case VC_EXTENSION_UNIT:
|
|
|
|
+ id = entity->extension.baSourceID[0];
|
|
|
|
+ break;
|
|
|
|
+
|
|
|
|
+ case VC_PROCESSING_UNIT:
|
|
|
|
+ id = entity->processing.bSourceID;
|
|
|
|
+ break;
|
|
|
|
+
|
|
|
|
+ case VC_SELECTOR_UNIT:
|
|
|
|
+ /* Single-input selector units are ignored. */
|
|
|
|
+ if (entity->selector.bNrInPins == 1) {
|
|
|
|
+ id = entity->selector.baSourceID[0];
|
|
|
|
+ break;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ if (uvc_trace_param & UVC_TRACE_PROBE)
|
|
|
|
+ printk(" <- IT");
|
|
|
|
+
|
|
|
|
+ video->selector = entity;
|
|
|
|
+ for (i = 0; i < entity->selector.bNrInPins; ++i) {
|
|
|
|
+ id = entity->selector.baSourceID[i];
|
|
|
|
+ term = uvc_entity_by_id(video->dev, id);
|
|
|
|
+ if (term == NULL || !UVC_ENTITY_IS_ITERM(term)) {
|
|
|
|
+ uvc_trace(UVC_TRACE_DESCR, "Selector unit %d "
|
|
|
|
+ "input %d isn't connected to an "
|
|
|
|
+ "input terminal\n", entity->id, i);
|
|
|
|
+ return -1;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ if (uvc_trace_param & UVC_TRACE_PROBE)
|
|
|
|
+ printk(" %d", term->id);
|
|
|
|
+
|
|
|
|
+ list_add_tail(&term->chain, &video->iterms);
|
|
|
|
+ uvc_scan_chain_forward(video, term, entity);
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ if (uvc_trace_param & UVC_TRACE_PROBE)
|
|
|
|
+ printk("\n");
|
|
|
|
+
|
|
|
|
+ id = 0;
|
|
|
|
+ break;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ return id;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static int uvc_scan_chain(struct uvc_video_device *video)
|
|
|
|
+{
|
|
|
|
+ struct uvc_entity *entity, *prev;
|
|
|
|
+ int id;
|
|
|
|
+
|
|
|
|
+ entity = video->oterm;
|
|
|
|
+ uvc_trace(UVC_TRACE_PROBE, "Scanning UVC chain: OT %d", entity->id);
|
|
|
|
+ id = entity->output.bSourceID;
|
|
|
|
+ while (id != 0) {
|
|
|
|
+ prev = entity;
|
|
|
|
+ entity = uvc_entity_by_id(video->dev, id);
|
|
|
|
+ if (entity == NULL) {
|
|
|
|
+ uvc_trace(UVC_TRACE_DESCR, "Found reference to "
|
|
|
|
+ "unknown entity %d.\n", id);
|
|
|
|
+ return -1;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ /* Process entity */
|
|
|
|
+ if (uvc_scan_chain_entity(video, entity) < 0)
|
|
|
|
+ return -1;
|
|
|
|
+
|
|
|
|
+ /* Forward scan */
|
|
|
|
+ if (uvc_scan_chain_forward(video, entity, prev) < 0)
|
|
|
|
+ return -1;
|
|
|
|
+
|
|
|
|
+ /* Stop when a terminal is found. */
|
|
|
|
+ if (!UVC_ENTITY_IS_UNIT(entity))
|
|
|
|
+ break;
|
|
|
|
+
|
|
|
|
+ /* Backward scan */
|
|
|
|
+ id = uvc_scan_chain_backward(video, entity);
|
|
|
|
+ if (id < 0)
|
|
|
|
+ return id;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ /* Initialize the video buffers queue. */
|
|
|
|
+ uvc_queue_init(&video->queue);
|
|
|
|
+
|
|
|
|
+ return 0;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+/*
|
|
|
|
+ * Register the video devices.
|
|
|
|
+ *
|
|
|
|
+ * The driver currently supports a single video device per control interface
|
|
|
|
+ * only. The terminal and units must match the following structure:
|
|
|
|
+ *
|
|
|
|
+ * ITT_CAMERA -> VC_PROCESSING_UNIT -> VC_EXTENSION_UNIT{0,n} -> TT_STREAMING
|
|
|
|
+ *
|
|
|
|
+ * The Extension Units, if present, must have a single input pin. The
|
|
|
|
+ * Processing Unit and Extension Units can be in any order. Additional
|
|
|
|
+ * Extension Units connected to the main chain as single-unit branches are
|
|
|
|
+ * also supported.
|
|
|
|
+ */
|
|
|
|
+static int uvc_register_video(struct uvc_device *dev)
|
|
|
|
+{
|
|
|
|
+ struct video_device *vdev;
|
|
|
|
+ struct uvc_entity *term;
|
|
|
|
+ int found = 0, ret;
|
|
|
|
+
|
|
|
|
+ /* Check if the control interface matches the structure we expect. */
|
|
|
|
+ list_for_each_entry(term, &dev->entities, list) {
|
|
|
|
+ struct uvc_streaming *streaming;
|
|
|
|
+
|
|
|
|
+ if (UVC_ENTITY_TYPE(term) != TT_STREAMING)
|
|
|
|
+ continue;
|
|
|
|
+
|
|
|
|
+ memset(&dev->video, 0, sizeof dev->video);
|
|
|
|
+ mutex_init(&dev->video.ctrl_mutex);
|
|
|
|
+ INIT_LIST_HEAD(&dev->video.iterms);
|
|
|
|
+ INIT_LIST_HEAD(&dev->video.extensions);
|
|
|
|
+ dev->video.oterm = term;
|
|
|
|
+ dev->video.dev = dev;
|
|
|
|
+ if (uvc_scan_chain(&dev->video) < 0)
|
|
|
|
+ continue;
|
|
|
|
+
|
|
|
|
+ list_for_each_entry(streaming, &dev->streaming, list) {
|
|
|
|
+ if (streaming->header.bTerminalLink == term->id) {
|
|
|
|
+ dev->video.streaming = streaming;
|
|
|
|
+ found = 1;
|
|
|
|
+ break;
|
|
|
|
+ }
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ if (found)
|
|
|
|
+ break;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ if (!found) {
|
|
|
|
+ uvc_printk(KERN_INFO, "No valid video chain found.\n");
|
|
|
|
+ return -1;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ if (uvc_trace_param & UVC_TRACE_PROBE) {
|
|
|
|
+ uvc_printk(KERN_INFO, "Found a valid video chain (");
|
|
|
|
+ list_for_each_entry(term, &dev->video.iterms, chain) {
|
|
|
|
+ printk("%d", term->id);
|
|
|
|
+ if (term->chain.next != &dev->video.iterms)
|
|
|
|
+ printk(",");
|
|
|
|
+ }
|
|
|
|
+ printk(" -> %d).\n", dev->video.oterm->id);
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ /* Initialize the streaming interface with default streaming
|
|
|
|
+ * parameters.
|
|
|
|
+ */
|
|
|
|
+ if ((ret = uvc_video_init(&dev->video)) < 0) {
|
|
|
|
+ uvc_printk(KERN_ERR, "Failed to initialize the device "
|
|
|
|
+ "(%d).\n", ret);
|
|
|
|
+ return ret;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ /* Register the device with V4L. */
|
|
|
|
+ vdev = video_device_alloc();
|
|
|
|
+ if (vdev == NULL)
|
|
|
|
+ return -1;
|
|
|
|
+
|
|
|
|
+ /* We already hold a reference to dev->udev. The video device will be
|
|
|
|
+ * unregistered before the reference is released, so we don't need to
|
|
|
|
+ * get another one.
|
|
|
|
+ */
|
|
|
|
+ vdev->dev = &dev->intf->dev;
|
|
|
|
+ vdev->type = 0;
|
|
|
|
+ vdev->type2 = 0;
|
|
|
|
+ vdev->minor = -1;
|
|
|
|
+ vdev->fops = &uvc_fops;
|
|
|
|
+ vdev->release = video_device_release;
|
|
|
|
+ strncpy(vdev->name, dev->name, sizeof vdev->name);
|
|
|
|
+
|
|
|
|
+ /* Set the driver data before calling video_register_device, otherwise
|
|
|
|
+ * uvc_v4l2_open might race us.
|
|
|
|
+ *
|
|
|
|
+ * FIXME: usb_set_intfdata hasn't been called so far. Is that a
|
|
|
|
+ * problem ? Does any function which could be called here get
|
|
|
|
+ * a pointer to the usb_interface ?
|
|
|
|
+ */
|
|
|
|
+ dev->video.vdev = vdev;
|
|
|
|
+ video_set_drvdata(vdev, &dev->video);
|
|
|
|
+
|
|
|
|
+ if (video_register_device(vdev, VFL_TYPE_GRABBER, -1) < 0) {
|
|
|
|
+ dev->video.vdev = NULL;
|
|
|
|
+ video_device_release(vdev);
|
|
|
|
+ return -1;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ return 0;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+/*
|
|
|
|
+ * Delete the UVC device.
|
|
|
|
+ *
|
|
|
|
+ * Called by the kernel when the last reference to the uvc_device structure
|
|
|
|
+ * is released.
|
|
|
|
+ *
|
|
|
|
+ * Unregistering the video devices is done here because every opened instance
|
|
|
|
+ * must be closed before the device can be unregistered. An alternative would
|
|
|
|
+ * have been to use another reference count for uvc_v4l2_open/uvc_release, and
|
|
|
|
+ * unregister the video devices on disconnect when that reference count drops
|
|
|
|
+ * to zero.
|
|
|
|
+ *
|
|
|
|
+ * As this function is called after or during disconnect(), all URBs have
|
|
|
|
+ * already been canceled by the USB core. There is no need to kill the
|
|
|
|
+ * interrupt URB manually.
|
|
|
|
+ */
|
|
|
|
+void uvc_delete(struct kref *kref)
|
|
|
|
+{
|
|
|
|
+ struct uvc_device *dev = container_of(kref, struct uvc_device, kref);
|
|
|
|
+ struct list_head *p, *n;
|
|
|
|
+
|
|
|
|
+ /* Unregister the video device */
|
|
|
|
+ uvc_unregister_video(dev);
|
|
|
|
+ usb_put_intf(dev->intf);
|
|
|
|
+ usb_put_dev(dev->udev);
|
|
|
|
+
|
|
|
|
+ uvc_status_cleanup(dev);
|
|
|
|
+ uvc_ctrl_cleanup_device(dev);
|
|
|
|
+
|
|
|
|
+ list_for_each_safe(p, n, &dev->entities) {
|
|
|
|
+ struct uvc_entity *entity;
|
|
|
|
+ entity = list_entry(p, struct uvc_entity, list);
|
|
|
|
+ kfree(entity);
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ list_for_each_safe(p, n, &dev->streaming) {
|
|
|
|
+ struct uvc_streaming *streaming;
|
|
|
|
+ streaming = list_entry(p, struct uvc_streaming, list);
|
|
|
|
+ usb_driver_release_interface(&uvc_driver.driver,
|
|
|
|
+ streaming->intf);
|
|
|
|
+ usb_put_intf(streaming->intf);
|
|
|
|
+ kfree(streaming->format);
|
|
|
|
+ kfree(streaming->header.bmaControls);
|
|
|
|
+ kfree(streaming);
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ kfree(dev);
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static int uvc_probe(struct usb_interface *intf,
|
|
|
|
+ const struct usb_device_id *id)
|
|
|
|
+{
|
|
|
|
+ struct usb_device *udev = interface_to_usbdev(intf);
|
|
|
|
+ struct uvc_device *dev;
|
|
|
|
+ int ret;
|
|
|
|
+
|
|
|
|
+ if (id->idVendor && id->idProduct)
|
|
|
|
+ uvc_trace(UVC_TRACE_PROBE, "Probing known UVC device %s "
|
|
|
|
+ "(%04x:%04x)\n", udev->devpath, id->idVendor,
|
|
|
|
+ id->idProduct);
|
|
|
|
+ else
|
|
|
|
+ uvc_trace(UVC_TRACE_PROBE, "Probing generic UVC device %s\n",
|
|
|
|
+ udev->devpath);
|
|
|
|
+
|
|
|
|
+ /* Allocate memory for the device and initialize it */
|
|
|
|
+ if ((dev = kzalloc(sizeof *dev, GFP_KERNEL)) == NULL)
|
|
|
|
+ return -ENOMEM;
|
|
|
|
+
|
|
|
|
+ INIT_LIST_HEAD(&dev->entities);
|
|
|
|
+ INIT_LIST_HEAD(&dev->streaming);
|
|
|
|
+ kref_init(&dev->kref);
|
|
|
|
+
|
|
|
|
+ dev->udev = usb_get_dev(udev);
|
|
|
|
+ dev->intf = usb_get_intf(intf);
|
|
|
|
+ dev->intfnum = intf->cur_altsetting->desc.bInterfaceNumber;
|
|
|
|
+ dev->quirks = id->driver_info | uvc_quirks_param;
|
|
|
|
+
|
|
|
|
+ if (udev->product != NULL)
|
|
|
|
+ strncpy(dev->name, udev->product, sizeof dev->name);
|
|
|
|
+ else
|
|
|
|
+ snprintf(dev->name, sizeof dev->name,
|
|
|
|
+ "UVC Camera (%04x:%04x)",
|
|
|
|
+ le16_to_cpu(udev->descriptor.idVendor),
|
|
|
|
+ le16_to_cpu(udev->descriptor.idProduct));
|
|
|
|
+
|
|
|
|
+ /* Parse the Video Class control descriptor */
|
|
|
|
+ if (uvc_parse_control(dev) < 0) {
|
|
|
|
+ uvc_trace(UVC_TRACE_PROBE, "Unable to parse UVC "
|
|
|
|
+ "descriptors.\n");
|
|
|
|
+ goto error;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ uvc_printk(KERN_INFO, "Found UVC %u.%02u device %s (%04x:%04x)\n",
|
|
|
|
+ dev->uvc_version >> 8, dev->uvc_version & 0xff,
|
|
|
|
+ udev->product ? udev->product : "<unnamed>",
|
|
|
|
+ le16_to_cpu(udev->descriptor.idVendor),
|
|
|
|
+ le16_to_cpu(udev->descriptor.idProduct));
|
|
|
|
+
|
|
|
|
+ if (uvc_quirks_param != 0) {
|
|
|
|
+ uvc_printk(KERN_INFO, "Forcing device quirks 0x%x by module "
|
|
|
|
+ "parameter for testing purpose.\n", uvc_quirks_param);
|
|
|
|
+ uvc_printk(KERN_INFO, "Please report required quirks to the "
|
|
|
|
+ "linux-uvc-devel mailing list.\n");
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ /* Initialize controls */
|
|
|
|
+ if (uvc_ctrl_init_device(dev) < 0)
|
|
|
|
+ goto error;
|
|
|
|
+
|
|
|
|
+ /* Register the video devices */
|
|
|
|
+ if (uvc_register_video(dev) < 0)
|
|
|
|
+ goto error;
|
|
|
|
+
|
|
|
|
+ /* Save our data pointer in the interface data */
|
|
|
|
+ usb_set_intfdata(intf, dev);
|
|
|
|
+
|
|
|
|
+ /* Initialize the interrupt URB */
|
|
|
|
+ if ((ret = uvc_status_init(dev)) < 0) {
|
|
|
|
+ uvc_printk(KERN_INFO, "Unable to initialize the status "
|
|
|
|
+ "endpoint (%d), status interrupt will not be "
|
|
|
|
+ "supported.\n", ret);
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ uvc_trace(UVC_TRACE_PROBE, "UVC device initialized.\n");
|
|
|
|
+ return 0;
|
|
|
|
+
|
|
|
|
+error:
|
|
|
|
+ kref_put(&dev->kref, uvc_delete);
|
|
|
|
+ return -ENODEV;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static void uvc_disconnect(struct usb_interface *intf)
|
|
|
|
+{
|
|
|
|
+ struct uvc_device *dev = usb_get_intfdata(intf);
|
|
|
|
+
|
|
|
|
+ /* Set the USB interface data to NULL. This can be done outside the
|
|
|
|
+ * lock, as there's no other reader.
|
|
|
|
+ */
|
|
|
|
+ usb_set_intfdata(intf, NULL);
|
|
|
|
+
|
|
|
|
+ if (intf->cur_altsetting->desc.bInterfaceSubClass == SC_VIDEOSTREAMING)
|
|
|
|
+ return;
|
|
|
|
+
|
|
|
|
+ /* uvc_v4l2_open() might race uvc_disconnect(). A static driver-wide
|
|
|
|
+ * lock is needed to prevent uvc_disconnect from releasing its
|
|
|
|
+ * reference to the uvc_device instance after uvc_v4l2_open() received
|
|
|
|
+ * the pointer to the device (video_devdata) but before it got the
|
|
|
|
+ * chance to increase the reference count (kref_get).
|
|
|
|
+ */
|
|
|
|
+ mutex_lock(&uvc_driver.open_mutex);
|
|
|
|
+
|
|
|
|
+ dev->state |= UVC_DEV_DISCONNECTED;
|
|
|
|
+ kref_put(&dev->kref, uvc_delete);
|
|
|
|
+
|
|
|
|
+ mutex_unlock(&uvc_driver.open_mutex);
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static int uvc_suspend(struct usb_interface *intf, pm_message_t message)
|
|
|
|
+{
|
|
|
|
+ struct uvc_device *dev = usb_get_intfdata(intf);
|
|
|
|
+
|
|
|
|
+ uvc_trace(UVC_TRACE_SUSPEND, "Suspending interface %u\n",
|
|
|
|
+ intf->cur_altsetting->desc.bInterfaceNumber);
|
|
|
|
+
|
|
|
|
+ /* Controls are cached on the fly so they don't need to be saved. */
|
|
|
|
+ if (intf->cur_altsetting->desc.bInterfaceSubClass == SC_VIDEOCONTROL)
|
|
|
|
+ return uvc_status_suspend(dev);
|
|
|
|
+
|
|
|
|
+ if (dev->video.streaming->intf != intf) {
|
|
|
|
+ uvc_trace(UVC_TRACE_SUSPEND, "Suspend: video streaming USB "
|
|
|
|
+ "interface mismatch.\n");
|
|
|
|
+ return -EINVAL;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ return uvc_video_suspend(&dev->video);
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static int uvc_resume(struct usb_interface *intf)
|
|
|
|
+{
|
|
|
|
+ struct uvc_device *dev = usb_get_intfdata(intf);
|
|
|
|
+ int ret;
|
|
|
|
+
|
|
|
|
+ uvc_trace(UVC_TRACE_SUSPEND, "Resuming interface %u\n",
|
|
|
|
+ intf->cur_altsetting->desc.bInterfaceNumber);
|
|
|
|
+
|
|
|
|
+ if (intf->cur_altsetting->desc.bInterfaceSubClass == SC_VIDEOCONTROL) {
|
|
|
|
+ if ((ret = uvc_ctrl_resume_device(dev)) < 0)
|
|
|
|
+ return ret;
|
|
|
|
+
|
|
|
|
+ return uvc_status_resume(dev);
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ if (dev->video.streaming->intf != intf) {
|
|
|
|
+ uvc_trace(UVC_TRACE_SUSPEND, "Resume: video streaming USB "
|
|
|
|
+ "interface mismatch.\n");
|
|
|
|
+ return -EINVAL;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ return uvc_video_resume(&dev->video);
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+/* ------------------------------------------------------------------------
|
|
|
|
+ * Driver initialization and cleanup
|
|
|
|
+ */
|
|
|
|
+
|
|
|
|
+/*
|
|
|
|
+ * The Logitech cameras listed below have their interface class set to
|
|
|
|
+ * VENDOR_SPEC because they don't announce themselves as UVC devices, even
|
|
|
|
+ * though they are compliant.
|
|
|
|
+ */
|
|
|
|
+static struct usb_device_id uvc_ids[] = {
|
|
|
|
+ /* ALi M5606 (Clevo M540SR) */
|
|
|
|
+ { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
|
|
|
|
+ | USB_DEVICE_ID_MATCH_INT_INFO,
|
|
|
|
+ .idVendor = 0x0402,
|
|
|
|
+ .idProduct = 0x5606,
|
|
|
|
+ .bInterfaceClass = USB_CLASS_VIDEO,
|
|
|
|
+ .bInterfaceSubClass = 1,
|
|
|
|
+ .bInterfaceProtocol = 0,
|
|
|
|
+ .driver_info = UVC_QUIRK_PROBE_MINMAX },
|
|
|
|
+ /* Creative Live! Optia */
|
|
|
|
+ { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
|
|
|
|
+ | USB_DEVICE_ID_MATCH_INT_INFO,
|
|
|
|
+ .idVendor = 0x041e,
|
|
|
|
+ .idProduct = 0x4057,
|
|
|
|
+ .bInterfaceClass = USB_CLASS_VIDEO,
|
|
|
|
+ .bInterfaceSubClass = 1,
|
|
|
|
+ .bInterfaceProtocol = 0,
|
|
|
|
+ .driver_info = UVC_QUIRK_PROBE_MINMAX },
|
|
|
|
+ /* Microsoft Lifecam NX-6000 */
|
|
|
|
+ { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
|
|
|
|
+ | USB_DEVICE_ID_MATCH_INT_INFO,
|
|
|
|
+ .idVendor = 0x045e,
|
|
|
|
+ .idProduct = 0x00f8,
|
|
|
|
+ .bInterfaceClass = USB_CLASS_VIDEO,
|
|
|
|
+ .bInterfaceSubClass = 1,
|
|
|
|
+ .bInterfaceProtocol = 0,
|
|
|
|
+ .driver_info = UVC_QUIRK_PROBE_MINMAX },
|
|
|
|
+ /* Microsoft Lifecam VX-7000 */
|
|
|
|
+ { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
|
|
|
|
+ | USB_DEVICE_ID_MATCH_INT_INFO,
|
|
|
|
+ .idVendor = 0x045e,
|
|
|
|
+ .idProduct = 0x0723,
|
|
|
|
+ .bInterfaceClass = USB_CLASS_VIDEO,
|
|
|
|
+ .bInterfaceSubClass = 1,
|
|
|
|
+ .bInterfaceProtocol = 0,
|
|
|
|
+ .driver_info = UVC_QUIRK_PROBE_MINMAX },
|
|
|
|
+ /* Logitech Quickcam Fusion */
|
|
|
|
+ { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
|
|
|
|
+ | USB_DEVICE_ID_MATCH_INT_INFO,
|
|
|
|
+ .idVendor = 0x046d,
|
|
|
|
+ .idProduct = 0x08c1,
|
|
|
|
+ .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
|
|
|
|
+ .bInterfaceSubClass = 1,
|
|
|
|
+ .bInterfaceProtocol = 0 },
|
|
|
|
+ /* Logitech Quickcam Orbit MP */
|
|
|
|
+ { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
|
|
|
|
+ | USB_DEVICE_ID_MATCH_INT_INFO,
|
|
|
|
+ .idVendor = 0x046d,
|
|
|
|
+ .idProduct = 0x08c2,
|
|
|
|
+ .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
|
|
|
|
+ .bInterfaceSubClass = 1,
|
|
|
|
+ .bInterfaceProtocol = 0 },
|
|
|
|
+ /* Logitech Quickcam Pro for Notebook */
|
|
|
|
+ { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
|
|
|
|
+ | USB_DEVICE_ID_MATCH_INT_INFO,
|
|
|
|
+ .idVendor = 0x046d,
|
|
|
|
+ .idProduct = 0x08c3,
|
|
|
|
+ .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
|
|
|
|
+ .bInterfaceSubClass = 1,
|
|
|
|
+ .bInterfaceProtocol = 0 },
|
|
|
|
+ /* Logitech Quickcam Pro 5000 */
|
|
|
|
+ { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
|
|
|
|
+ | USB_DEVICE_ID_MATCH_INT_INFO,
|
|
|
|
+ .idVendor = 0x046d,
|
|
|
|
+ .idProduct = 0x08c5,
|
|
|
|
+ .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
|
|
|
|
+ .bInterfaceSubClass = 1,
|
|
|
|
+ .bInterfaceProtocol = 0 },
|
|
|
|
+ /* Logitech Quickcam OEM Dell Notebook */
|
|
|
|
+ { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
|
|
|
|
+ | USB_DEVICE_ID_MATCH_INT_INFO,
|
|
|
|
+ .idVendor = 0x046d,
|
|
|
|
+ .idProduct = 0x08c6,
|
|
|
|
+ .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
|
|
|
|
+ .bInterfaceSubClass = 1,
|
|
|
|
+ .bInterfaceProtocol = 0 },
|
|
|
|
+ /* Logitech Quickcam OEM Cisco VT Camera II */
|
|
|
|
+ { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
|
|
|
|
+ | USB_DEVICE_ID_MATCH_INT_INFO,
|
|
|
|
+ .idVendor = 0x046d,
|
|
|
|
+ .idProduct = 0x08c7,
|
|
|
|
+ .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
|
|
|
|
+ .bInterfaceSubClass = 1,
|
|
|
|
+ .bInterfaceProtocol = 0 },
|
|
|
|
+ /* Apple Built-In iSight */
|
|
|
|
+ { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
|
|
|
|
+ | USB_DEVICE_ID_MATCH_INT_INFO,
|
|
|
|
+ .idVendor = 0x05ac,
|
|
|
|
+ .idProduct = 0x8501,
|
|
|
|
+ .bInterfaceClass = USB_CLASS_VIDEO,
|
|
|
|
+ .bInterfaceSubClass = 1,
|
|
|
|
+ .bInterfaceProtocol = 0,
|
|
|
|
+ .driver_info = UVC_QUIRK_PROBE_MINMAX
|
|
|
|
+ | UVC_QUIRK_BUILTIN_ISIGHT },
|
|
|
|
+ /* Genesys Logic USB 2.0 PC Camera */
|
|
|
|
+ { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
|
|
|
|
+ | USB_DEVICE_ID_MATCH_INT_INFO,
|
|
|
|
+ .idVendor = 0x05e3,
|
|
|
|
+ .idProduct = 0x0505,
|
|
|
|
+ .bInterfaceClass = USB_CLASS_VIDEO,
|
|
|
|
+ .bInterfaceSubClass = 1,
|
|
|
|
+ .bInterfaceProtocol = 0,
|
|
|
|
+ .driver_info = UVC_QUIRK_STREAM_NO_FID },
|
|
|
|
+ /* Silicon Motion SM371 */
|
|
|
|
+ { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
|
|
|
|
+ | USB_DEVICE_ID_MATCH_INT_INFO,
|
|
|
|
+ .idVendor = 0x090c,
|
|
|
|
+ .idProduct = 0xb371,
|
|
|
|
+ .bInterfaceClass = USB_CLASS_VIDEO,
|
|
|
|
+ .bInterfaceSubClass = 1,
|
|
|
|
+ .bInterfaceProtocol = 0,
|
|
|
|
+ .driver_info = UVC_QUIRK_PROBE_MINMAX },
|
|
|
|
+ /* MT6227 */
|
|
|
|
+ { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
|
|
|
|
+ | USB_DEVICE_ID_MATCH_INT_INFO,
|
|
|
|
+ .idVendor = 0x0e8d,
|
|
|
|
+ .idProduct = 0x0004,
|
|
|
|
+ .bInterfaceClass = USB_CLASS_VIDEO,
|
|
|
|
+ .bInterfaceSubClass = 1,
|
|
|
|
+ .bInterfaceProtocol = 0,
|
|
|
|
+ .driver_info = UVC_QUIRK_PROBE_MINMAX },
|
|
|
|
+ /* Syntek (HP Spartan) */
|
|
|
|
+ { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
|
|
|
|
+ | USB_DEVICE_ID_MATCH_INT_INFO,
|
|
|
|
+ .idVendor = 0x174f,
|
|
|
|
+ .idProduct = 0x5212,
|
|
|
|
+ .bInterfaceClass = USB_CLASS_VIDEO,
|
|
|
|
+ .bInterfaceSubClass = 1,
|
|
|
|
+ .bInterfaceProtocol = 0,
|
|
|
|
+ .driver_info = UVC_QUIRK_STREAM_NO_FID },
|
|
|
|
+ /* Syntek (Asus U3S) */
|
|
|
|
+ { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
|
|
|
|
+ | USB_DEVICE_ID_MATCH_INT_INFO,
|
|
|
|
+ .idVendor = 0x174f,
|
|
|
|
+ .idProduct = 0x8a33,
|
|
|
|
+ .bInterfaceClass = USB_CLASS_VIDEO,
|
|
|
|
+ .bInterfaceSubClass = 1,
|
|
|
|
+ .bInterfaceProtocol = 0,
|
|
|
|
+ .driver_info = UVC_QUIRK_STREAM_NO_FID },
|
|
|
|
+ /* Ecamm Pico iMage */
|
|
|
|
+ { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
|
|
|
|
+ | USB_DEVICE_ID_MATCH_INT_INFO,
|
|
|
|
+ .idVendor = 0x18cd,
|
|
|
|
+ .idProduct = 0xcafe,
|
|
|
|
+ .bInterfaceClass = USB_CLASS_VIDEO,
|
|
|
|
+ .bInterfaceSubClass = 1,
|
|
|
|
+ .bInterfaceProtocol = 0,
|
|
|
|
+ .driver_info = UVC_QUIRK_PROBE_EXTRAFIELDS },
|
|
|
|
+ /* Bodelin ProScopeHR */
|
|
|
|
+ { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
|
|
|
|
+ | USB_DEVICE_ID_MATCH_DEV_HI
|
|
|
|
+ | USB_DEVICE_ID_MATCH_INT_INFO,
|
|
|
|
+ .idVendor = 0x19ab,
|
|
|
|
+ .idProduct = 0x1000,
|
|
|
|
+ .bcdDevice_hi = 0x0126,
|
|
|
|
+ .bInterfaceClass = USB_CLASS_VIDEO,
|
|
|
|
+ .bInterfaceSubClass = 1,
|
|
|
|
+ .bInterfaceProtocol = 0,
|
|
|
|
+ .driver_info = UVC_QUIRK_STATUS_INTERVAL },
|
|
|
|
+ /* SiGma Micro USB Web Camera */
|
|
|
|
+ { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
|
|
|
|
+ | USB_DEVICE_ID_MATCH_INT_INFO,
|
|
|
|
+ .idVendor = 0x1c4f,
|
|
|
|
+ .idProduct = 0x3000,
|
|
|
|
+ .bInterfaceClass = USB_CLASS_VIDEO,
|
|
|
|
+ .bInterfaceSubClass = 1,
|
|
|
|
+ .bInterfaceProtocol = 0,
|
|
|
|
+ .driver_info = UVC_QUIRK_PROBE_MINMAX
|
|
|
|
+ | UVC_QUIRK_IGNORE_SELECTOR_UNIT},
|
|
|
|
+ /* Acer OEM Webcam - Unknown vendor */
|
|
|
|
+ { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
|
|
|
|
+ | USB_DEVICE_ID_MATCH_INT_INFO,
|
|
|
|
+ .idVendor = 0x5986,
|
|
|
|
+ .idProduct = 0x0100,
|
|
|
|
+ .bInterfaceClass = USB_CLASS_VIDEO,
|
|
|
|
+ .bInterfaceSubClass = 1,
|
|
|
|
+ .bInterfaceProtocol = 0,
|
|
|
|
+ .driver_info = UVC_QUIRK_PROBE_MINMAX },
|
|
|
|
+ /* Packard Bell OEM Webcam */
|
|
|
|
+ { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
|
|
|
|
+ | USB_DEVICE_ID_MATCH_INT_INFO,
|
|
|
|
+ .idVendor = 0x5986,
|
|
|
|
+ .idProduct = 0x0101,
|
|
|
|
+ .bInterfaceClass = USB_CLASS_VIDEO,
|
|
|
|
+ .bInterfaceSubClass = 1,
|
|
|
|
+ .bInterfaceProtocol = 0,
|
|
|
|
+ .driver_info = UVC_QUIRK_PROBE_MINMAX },
|
|
|
|
+ /* Acer Crystal Eye webcam */
|
|
|
|
+ { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
|
|
|
|
+ | USB_DEVICE_ID_MATCH_INT_INFO,
|
|
|
|
+ .idVendor = 0x5986,
|
|
|
|
+ .idProduct = 0x0102,
|
|
|
|
+ .bInterfaceClass = USB_CLASS_VIDEO,
|
|
|
|
+ .bInterfaceSubClass = 1,
|
|
|
|
+ .bInterfaceProtocol = 0,
|
|
|
|
+ .driver_info = UVC_QUIRK_PROBE_MINMAX },
|
|
|
|
+ /* Acer OrbiCam - Unknown vendor */
|
|
|
|
+ { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
|
|
|
|
+ | USB_DEVICE_ID_MATCH_INT_INFO,
|
|
|
|
+ .idVendor = 0x5986,
|
|
|
|
+ .idProduct = 0x0200,
|
|
|
|
+ .bInterfaceClass = USB_CLASS_VIDEO,
|
|
|
|
+ .bInterfaceSubClass = 1,
|
|
|
|
+ .bInterfaceProtocol = 0,
|
|
|
|
+ .driver_info = UVC_QUIRK_PROBE_MINMAX },
|
|
|
|
+ /* Generic USB Video Class */
|
|
|
|
+ { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, 0) },
|
|
|
|
+ {}
|
|
|
|
+};
|
|
|
|
+
|
|
|
|
+MODULE_DEVICE_TABLE(usb, uvc_ids);
|
|
|
|
+
|
|
|
|
+struct uvc_driver uvc_driver = {
|
|
|
|
+ .driver = {
|
|
|
|
+ .name = "uvcvideo",
|
|
|
|
+ .probe = uvc_probe,
|
|
|
|
+ .disconnect = uvc_disconnect,
|
|
|
|
+ .suspend = uvc_suspend,
|
|
|
|
+ .resume = uvc_resume,
|
|
|
|
+ .id_table = uvc_ids,
|
|
|
|
+ .supports_autosuspend = 1,
|
|
|
|
+ },
|
|
|
|
+};
|
|
|
|
+
|
|
|
|
+static int __init uvc_init(void)
|
|
|
|
+{
|
|
|
|
+ int result;
|
|
|
|
+
|
|
|
|
+ INIT_LIST_HEAD(&uvc_driver.devices);
|
|
|
|
+ INIT_LIST_HEAD(&uvc_driver.controls);
|
|
|
|
+ mutex_init(&uvc_driver.open_mutex);
|
|
|
|
+ mutex_init(&uvc_driver.ctrl_mutex);
|
|
|
|
+
|
|
|
|
+ uvc_ctrl_init();
|
|
|
|
+
|
|
|
|
+ result = usb_register(&uvc_driver.driver);
|
|
|
|
+ if (result == 0)
|
|
|
|
+ printk(KERN_INFO DRIVER_DESC " (" DRIVER_VERSION ")\n");
|
|
|
|
+ return result;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static void __exit uvc_cleanup(void)
|
|
|
|
+{
|
|
|
|
+ usb_deregister(&uvc_driver.driver);
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+module_init(uvc_init);
|
|
|
|
+module_exit(uvc_cleanup);
|
|
|
|
+
|
|
|
|
+module_param_named(quirks, uvc_quirks_param, uint, S_IRUGO|S_IWUSR);
|
|
|
|
+MODULE_PARM_DESC(quirks, "Forced device quirks");
|
|
|
|
+module_param_named(trace, uvc_trace_param, uint, S_IRUGO|S_IWUSR);
|
|
|
|
+MODULE_PARM_DESC(trace, "Trace level bitmask");
|
|
|
|
+
|
|
|
|
+MODULE_AUTHOR(DRIVER_AUTHOR);
|
|
|
|
+MODULE_DESCRIPTION(DRIVER_DESC);
|
|
|
|
+MODULE_LICENSE("GPL");
|
|
|
|
+MODULE_VERSION(DRIVER_VERSION);
|