From 4a462ce084d5beb92cfc68f53f88c035c82e6b59 Mon Sep 17 00:00:00 2001
From: Jyri Sarha <jsarha@ti.com>
Date: Thu, 31 Mar 2016 16:35:59 +0300
Subject: [PATCH] ALSA: pcm: Allow 32 bit sample format in IEC958 channel
 status helper

Treat 32 bit sample width as if it was 24 bits when generating IEC958
channel status bits. On some platforms 24 sample width is problematic
and to get full 24 bit precision a 32 bit format, using only the 24
most significant bits, may have to be used.

Signed-off-by: Jyri Sarha <jsarha@ti.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 sound/core/pcm_iec958.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sound/core/pcm_iec958.c b/sound/core/pcm_iec958.c
index e016871a978fe..5e6aed64f4515 100644
--- a/sound/core/pcm_iec958.c
+++ b/sound/core/pcm_iec958.c
@@ -59,6 +59,7 @@ static int create_iec958_consumer(uint rate, uint sample_width,
 			     IEC958_AES4_CON_MAX_WORDLEN_24;
 			break;
 		case 24:
+		case 32: /* Assume 24-bit width for 32-bit samples. */
 			ws = IEC958_AES4_CON_WORDLEN_24_20 |
 			     IEC958_AES4_CON_MAX_WORDLEN_24;
 			break;