From f06934bd3cf773c297683d1345bf61c7807d7e75 Mon Sep 17 00:00:00 2001 From: Takashi Iwai 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 Signed-off-by: Jaroslav Kysela --- 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 0666cbc..6a29bcf 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); -- 1.8.2.3