ALSA: oxfw: calculating MIDI ports in stream discover

[karo-tx-linux.git] / sound / firewire / oxfw / oxfw-stream.c

diff --git a/sound/firewire/oxfw/oxfw-stream.c b/sound/firewire/oxfw/oxfw-stream.c
index 2c63058bd24595e3a987ae47a025bdeb66f5f73f..48798084de16a83bf146b9450e6024022e18f23d 100644 (file)
--- a/sound/firewire/oxfw/oxfw-stream.c
+++ b/sound/firewire/oxfw/oxfw-stream.c
@@ -629,6 +629,9 @@ end:
 int snd_oxfw_stream_discover(struct snd_oxfw *oxfw)
 {
        u8 plugs[AVC_PLUG_INFO_BUF_BYTES];
+       struct snd_oxfw_stream_formation formation;
+       u8 *format;
+       unsigned int i;
        int err;
 
        /* the number of plugs for isoc in/out, ext in/out  */
@@ -648,12 +651,42 @@ int snd_oxfw_stream_discover(struct snd_oxfw *oxfw)
                err = fill_stream_formats(oxfw, AVC_GENERAL_PLUG_DIR_OUT, 0);
                if (err < 0)
                        goto end;
+
+               for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) {
+                       format = oxfw->tx_stream_formats[i];
+                       if (format == NULL)
+                               continue;
+                       err = snd_oxfw_stream_parse_format(format, &formation);
+                       if (err < 0)
+                               continue;
+
+                       /* Add one MIDI port. */
+                       if (formation.midi > 0)
+                               oxfw->midi_input_ports = 1;
+               }
+
                oxfw->has_output = true;
        }
 
        /* use iPCR[0] if exists */
-       if (plugs[0] > 0)
+       if (plugs[0] > 0) {
                err = fill_stream_formats(oxfw, AVC_GENERAL_PLUG_DIR_IN, 0);
+               if (err < 0)
+                       goto end;
+
+               for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) {
+                       format = oxfw->rx_stream_formats[i];
+                       if (format == NULL)
+                               continue;
+                       err = snd_oxfw_stream_parse_format(format, &formation);
+                       if (err < 0)
+                               continue;
+
+                       /* Add one MIDI port. */
+                       if (formation.midi > 0)
+                               oxfw->midi_output_ports = 1;
+               }
+       }
 end:
        return err;
 }