ALSA: dice: fix stream format at middle sampling rate for Alesis iO 26

commit 1b6604896e78969baffc1b6cc6bc175f95929ac4 upstream.

Alesis iO 26 FireWire has two pairs of digital optical interface. It
delivers PCM frames from the interfaces by second isochronous packet
streaming. Although both of the interfaces are available at 44.1/48.0
kHz, first one of them is only available at 88.2/96.0 kHz. It reduces
the number of PCM samples to 4 in Multi Bit Linear Audio data channel
of data blocks on the second isochronous packet streaming.

This commit fixes hardcoded stream formats.

Cc: <stable@vger.kernel.org>
Fixes: 28b208f600a3 ("ALSA: dice: add parameters of stream formats for models produced by Alesis")
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/r/20210513125652.110249-2-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/sound/firewire/dice/dice-alesis.c b/sound/firewire/dice/dice-alesis.c
index f5b325263b6747478a0e78783a8ce1c480e515e3..39a4ef8c85430ba3c0176a3477f3142d76e26d0e 100644 (file)
--- a/sound/firewire/dice/dice-alesis.c
+++ b/sound/firewire/dice/dice-alesis.c
@@ -16,7 +16,7 @@ alesis_io14_tx_pcm_chs[MAX_STREAMS][SND_DICE_RATE_MODE_COUNT] = {
 static const unsigned int
 alesis_io26_tx_pcm_chs[MAX_STREAMS][SND_DICE_RATE_MODE_COUNT] = {
        {10, 10, 4},    /* Tx0 = Analog + S/PDIF. */
-       {16, 8, 0},     /* Tx1 = ADAT1 + ADAT2. */
+       {16, 4, 0},     /* Tx1 = ADAT1 + ADAT2 (available at low rate). */
 };
 
 int snd_dice_detect_alesis_formats(struct snd_dice *dice)