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authorTakashi Iwai <tiwai@suse.de>2007-04-10 11:15:34 +0200
committerJaroslav Kysela <perex@suse.cz>2007-05-11 16:55:57 +0200
commitf06934bd3cf773c297683d1345bf61c7807d7e75 (patch)
treed421e578f8d04f5ebe2895a9ae691f2ff54087e1
parentfdd4bb49ec3f401379875990fcece611c623e32f (diff)
[ALSA] ice1724 - Add comments for naming of PCM streams
Added some comments regarding naming of PCM streams on vt172x chip. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
-rw-r--r--sound/pci/ice1712/ice1724.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/sound/pci/ice1712/ice1724.c b/sound/pci/ice1712/ice1724.c
index 0666cbc5f5f..6a29bcf1904 100644
--- a/sound/pci/ice1712/ice1724.c
+++ b/sound/pci/ice1712/ice1724.c
@@ -2345,6 +2345,14 @@ static int __devinit snd_vt1724_probe(struct pci_dev *pci,
}
c = &no_matched;
__found:
+ /*
+ * VT1724 has separate DMAs for the analog and the SPDIF streams while
+ * ICE1712 has only one for both (mixed up).
+ *
+ * Confusingly the analog PCM is named "professional" here because it
+ * was called so in ice1712 driver, and vt1724 driver is derived from
+ * ice1712 driver.
+ */
if ((err = snd_vt1724_pcm_profi(ice, pcm_dev++)) < 0) {
snd_card_free(card);