[v9,2/7] ALSA: pcm: Allow 32 bit sample format in IEC958 channel status helper
diff mbox

Message ID 44ee7ac5c0ddb4d25ac1bd4f189d328f8205e4a0.1459431292.git.jsarha@ti.com
State New
Headers show

Commit Message

Jyri Sarha March 31, 2016, 1:35 p.m. UTC
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>
---
 sound/core/pcm_iec958.c | 1 +
 1 file changed, 1 insertion(+)

Comments

Takashi Iwai March 31, 2016, 1:43 p.m. UTC | #1
On Thu, 31 Mar 2016 15:35:59 +0200,
Jyri Sarha wrote:
> 
> 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>


Takashi
--
To unsubscribe from this list: send the line "unsubscribe linux-omap" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Patch
diff mbox

diff --git a/sound/core/pcm_iec958.c b/sound/core/pcm_iec958.c
index e016871..5e6aed6 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;