[alsa-devel] Applied "ALSA: pcm: Allow 32 bit sample format in IEC958 channel status helper" to the asoc tree

[Mark Brown]

The patch

   ALSA: pcm: Allow 32 bit sample format in IEC958 channel status helper

has been applied to the asoc tree at

   git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git 

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

>From 4a462ce084d5beb92cfc68f53f88c035c82e6b59 Mon Sep 17 00:00:00 2001
From: Jyri Sarha <jsarha at 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 at ti.com>
Reviewed-by: Takashi Iwai <tiwai at suse.de>
Signed-off-by: Mark Brown <broonie at 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 e016871a978f..5e6aed64f451 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;
-- 
2.8.0.rc3