ALSA: usb-audio: Show sync endpoint information in proc outputs

Now the sync endpoints have been parsed at the beginning and won't be
changed dynamically, let's show them in the proc outputs for helping
debugging.

Tested-by: Keith Milner <kamilner@superlative.org>
Tested-by: Dylan Robinson <dylan_robinson@motu.com>
Link: https://lore.kernel.org/r/20201123085347.19667-36-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/usb/proc.c b/sound/usb/proc.c
index 447ba32e281c8bd9d0e61f7c8151c9c5f8a5249b..e9bbaea7b2fa36e35bea2a8f7be6b52d140da0da 100644 (file)
--- a/sound/usb/proc.c
+++ b/sound/usb/proc.c
@@ -108,7 +108,8 @@ static void proc_dump_substream_formats(struct snd_usb_substream *subs, struct s
                                            snd_pcm_format_name(fmt));
                snd_iprintf(buffer, "\n");
                snd_iprintf(buffer, "    Channels: %d\n", fp->channels);
-               snd_iprintf(buffer, "    Endpoint: %d %s (%s)\n",
+               snd_iprintf(buffer, "    Endpoint: 0x%02x (%d %s) (%s)\n",
+                           fp->endpoint,
                            fp->endpoint & USB_ENDPOINT_NUMBER_MASK,
                            fp->endpoint & USB_DIR_IN ? "IN" : "OUT",
                            sync_types[(fp->ep_attr & USB_ENDPOINT_SYNCTYPE) >> 2]);
@@ -150,6 +151,19 @@ static void proc_dump_substream_formats(struct snd_usb_substream *subs, struct s
                        snd_iprintf(buffer, "\n");
                }
 
+               if (fp->sync_ep) {
+                       snd_iprintf(buffer, "    Sync Endpoint: 0x%02x (%d %s)\n",
+                                   fp->sync_ep,
+                                   fp->sync_ep & USB_ENDPOINT_NUMBER_MASK,
+                                   fp->sync_ep & USB_DIR_IN ? "IN" : "OUT");
+                       snd_iprintf(buffer, "    Sync EP Interface: %d\n",
+                                   fp->sync_iface);
+                       snd_iprintf(buffer, "    Sync EP Altset: %d\n",
+                                   fp->sync_altsetting);
+                       snd_iprintf(buffer, "    Implicit Feedback Mode: %s\n",
+                                   fp->implicit_fb ? "Yes" : "No");
+               }
+
                // snd_iprintf(buffer, "    Max Packet Size = %d\n", fp->maxpacksize);
                // snd_iprintf(buffer, "    EP Attribute = %#x\n", fp->attributes);
        }