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| author | Alison Wang <b18965@freescale.com> | 2014-09-29 09:29:46 (GMT) |
|---|---|---|
| committer | Matthew Weigel <Matthew.Weigel@freescale.com> | 2014-12-11 18:38:39 (GMT) |
| commit | f911217e6edd48de4277eec2f112449d61fe710e (patch) | |
| tree | 138c09a2cdcc706f25ac60d5992f98a93ee79616 /include/sound | |
| parent | 0ec580b6a604a4fcfd65c3515459def643c8517a (diff) | |
| download | linux-fsl-qoriq-f911217e6edd48de4277eec2f112449d61fe710e.tar.xz | |
ls102xa: audio: Workaround for SAI data transfer endian issue
Transmit Data Register(TDR) used as the destination address
of EDMA transaction is in big-endian mode. The audio data in
memory and EDMA transaction are in little-endian mode. For
S16_LE format data, a workaround is to swap the original 16-bit
data, and then write into the higher 16 bit of TDR.
Signed-off-by: Alison Wang <alison.wang@freescale.com>
Change-Id: Ib15832743e9a4c69792f2dad4cb00fbbc1d2daaa
Reviewed-on: http://git.am.freescale.net:8181/21063
Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com>
Reviewed-by: Jingchang Lu <jingchang.lu@freescale.com>
Reviewed-by: Zhengxiong Jin <Jason.Jin@freescale.com>
Diffstat (limited to 'include/sound')
| -rw-r--r-- | include/sound/pcm.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/sound/pcm.h b/include/sound/pcm.h index 84b10f9..a07b670 100644 --- a/include/sound/pcm.h +++ b/include/sound/pcm.h @@ -418,6 +418,8 @@ struct snd_pcm_substream { #endif /* misc flags */ unsigned int hw_opened: 1; + /* data swapped flags */ + unsigned int data_swapped; }; #define SUBSTREAM_BUSY(substream) ((substream)->ref_count > 0) |