From f06934bd3cf773c297683d1345bf61c7807d7e75 Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@suse.de>
Date: Tue, 10 Apr 2007 11:15:34 +0200
Subject: [PATCH] [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>
---
sound/pci/ice1712/ice1724.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/sound/pci/ice1712/ice1724.c b/sound/pci/ice1712/ice1724.c
index 0666cbc5f5fa..6a29bcf19042 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);
--
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