From 1b6604896e78969baffc1b6cc6bc175f95929ac4 Mon Sep 17 00:00:00 2001
From: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Date: Thu, 13 May 2021 21:56:48 +0900
Subject: [PATCH] ALSA: dice: fix stream format at middle sampling rate for Alesis iO 26
Git-commit: 1b6604896e78969baffc1b6cc6bc175f95929ac4
Patch-mainline: v5.13-rc3
References: git-fixes

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>

---
 sound/firewire/dice/dice-alesis.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/firewire/dice/dice-alesis.c b/sound/firewire/dice/dice-alesis.c
index 0916864511d5..27c13b9cc9ef 100644
--- 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)
-- 
2.26.2