diff options
| author |   Nicolin Chen <Guangyu.Chen@freescale.com> | 2014-08-05 15:32:05 +0800 |
|---|---|---|
| committer |   Mark Brown <broonie@linaro.org> | 2014-08-16 17:06:23 -0500 |
| commit | 08fdf65e37d560581233e06a659f73deeb3766f9 (patch) | |
| tree | bc00286a0de8e4acaf70a62beb01b83723ad1f3c /sound/soc/fsl/fsl_sai.h | |
| parent | ASoC: fsl_sai: Set SYNC bit of TCR2 to Asynchronous Mode (diff) | |
| download | wireguard-linux-08fdf65e37d560581233e06a659f73deeb3766f9.tar.xz wireguard-linux-08fdf65e37d560581233e06a659f73deeb3766f9.zip | |
ASoC: fsl_sai: Add asynchronous mode support
SAI supports these operation modes:
1) asynchronous mode
Both Tx and Rx are set to be asynchronous.
2) synchronous mode (Rx sync with Tx)
Tx is set to be asynchronous, Rx is set to be synchronous.
3) synchronous mode (Tx sync with Rx)
Rx is set to be asynchronous, Tx is set to be synchronous.
4) synchronous mode (Tx/Rx sync with another SAI's Tx)
5) synchronous mode (Tx/Rx sync with another SAI's Rx)
* 4) and 5) are beyond this patch because they are related with another SAI.
As the initial version of this SAI driver, it supported 2) as default while
the others were totally missing.
So this patch just adds supports for 1) and 3).
Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'sound/soc/fsl/fsl_sai.h')
| -rw-r--r-- | sound/soc/fsl/fsl_sai.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sound/soc/fsl/fsl_sai.h b/sound/soc/fsl/fsl_sai.h index 8e1feab7c2a0..b3d8864cd5f2 100644 --- a/sound/soc/fsl/fsl_sai.h +++ b/sound/soc/fsl/fsl_sai.h @@ -136,9 +136,13 @@ struct fsl_sai { bool big_endian_data; bool is_dsp_mode; bool sai_on_imx; + bool synchronous[2]; struct snd_dmaengine_dai_dma_data dma_params_rx; struct snd_dmaengine_dai_dma_data dma_params_tx; }; +#define TX 1 +#define RX 0 + #endif /* __FSL_SAI_H */ |