[src/trunk]: src/sys/dev/usb uvideo(4): Sprinkle debug messages.

[riastradh <riastradh%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/bec5e153cc6b
branches:  trunk
changeset: 362575:bec5e153cc6b
user:      riastradh <riastradh%NetBSD.org@localhost>
date:      Thu Mar 03 06:22:03 2022 +0000

description:
uvideo(4): Sprinkle debug messages.

diffstat:

 sys/dev/usb/uvideo.c |  29 +++++++++++++++++++++++++++--
 1 files changed, 27 insertions(+), 2 deletions(-)

diffs (90 lines):

diff -r 49d75a4f4d49 -r bec5e153cc6b sys/dev/usb/uvideo.c
--- a/sys/dev/usb/uvideo.c      Thu Mar 03 06:21:50 2022 +0000
+++ b/sys/dev/usb/uvideo.c      Thu Mar 03 06:22:03 2022 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: uvideo.c,v 1.65 2022/03/03 06:21:50 riastradh Exp $    */
+/*     $NetBSD: uvideo.c,v 1.66 2022/03/03 06:22:03 riastradh Exp $    */
 
 /*
  * Copyright (c) 2008 Patrick Mahoney
@@ -42,7 +42,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: uvideo.c,v 1.65 2022/03/03 06:21:50 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: uvideo.c,v 1.66 2022/03/03 06:22:03 riastradh Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_usb.h"
@@ -1025,6 +1025,11 @@
        uWord len;
        usbd_status err;
 
+       DPRINTF(("%s: %s ifaceno=%d vs=%p\n", __func__,
+               device_xname(sc->sc_dev),
+               ifdesc->bInterfaceNumber,
+               vs));
+
        SLIST_INSERT_HEAD(&sc->sc_stream_list, vs, entries);
        memset(vs, 0, sizeof(*vs));
        vs->vs_parent = sc;
@@ -1104,6 +1109,9 @@
        uint8_t bmAttributes, bEndpointAddress;
        int i;
 
+       DPRINTF(("%s: bInterfaceNumber=%d bAlternateSetting=%d\n", __func__,
+               ifdesc->bInterfaceNumber, ifdesc->bAlternateSetting));
+
        /* Iterate until the next interface descriptor.  All
         * descriptors until then belong to this streaming
         * interface. */
@@ -1219,6 +1227,10 @@
                }
        }
 
+       DPRINTF(("%s: bInterfaceNumber=%d bAlternateSetting=%d done\n",
+               __func__,
+               ifdesc->bInterfaceNumber, ifdesc->bAlternateSetting));
+
        return USBD_NORMAL_COMPLETION;
 }
 
@@ -1267,10 +1279,14 @@
        uint32_t frame_interval;
        const usb_guid_t *guid;
 
+       DPRINTF(("%s: ifaceno=%d subtype=%d probelen=%d\n", __func__,
+               vs->vs_ifaceno, vs->vs_subtype, vs->vs_probelen));
+
        pixel_format = VIDEO_FORMAT_UNDEFINED;
 
        switch (format_desc->bDescriptorSubtype) {
        case UDESC_VS_FORMAT_UNCOMPRESSED:
+               DPRINTF(("%s: uncompressed\n", __func__));
                subtype = UDESC_VS_FRAME_UNCOMPRESSED;
                default_index = GET(uvideo_vs_format_uncompressed_descriptor_t,
                                    format_desc,
@@ -1284,14 +1300,23 @@
                        pixel_format = VIDEO_FORMAT_NV12;
                else if (usb_guid_cmp(guid, &uvideo_guid_format_uyvy) == 0)
                        pixel_format = VIDEO_FORMAT_UYVY;
+               else {
+#ifdef UVIDEO_DEBUG
+                       DPRINTF(("%s: unknown format: ", __func__));
+                       usb_guid_print(guid);
+                       DPRINTF(("\n"));
+#endif
+               }
                break;
        case UDESC_VS_FORMAT_FRAME_BASED:
+               DPRINTF(("%s: frame-based\n", __func__));
                subtype = UDESC_VS_FRAME_FRAME_BASED;
                default_index = GET(uvideo_format_frame_based_descriptor_t,
                                    format_desc,
                                    bDefaultFrameIndex);
                break;
        case UDESC_VS_FORMAT_MJPEG:
+               DPRINTF(("%s: mjpeg\n", __func__));
                subtype = UDESC_VS_FRAME_MJPEG;
                default_index = GET(uvideo_vs_format_mjpeg_descriptor_t,
                                    format_desc,