[alsa-devel] [PATCH] ASoC: davinci-mcasp: Fix TDM slot rx/tx mask associations

[Jyri Sarha]

Reviewed-by: Jyri Sarha <jsarha at ti.com>

For what little there is to review.

I only had HW that worked with symmetric masks, so I did not hit this 
myself. Should have hacked something to codec end to be able to test 
asymetric masks at McASP end.

Thanks,
Jyri

On 11/09/15 20:19, Andreas Dannenberg wrote:
> Fixes the associations between the tx_mask and rx_mask and the associated
> playback / capture streams during setting of the TDM slot. With this
> patch in place it is now possible for example to only populate tx_mask
> (leaving rx_mask as 0) for output-only codecs to control the TDM slot(s)
> the McASP serial port uses for transmit. Before that, this scenario
> would incorrectly rely on the rx_mask for this.
>
> Signed-off-by: Andreas Dannenberg <dannenberg at ti.com>
> ---
>   sound/soc/davinci/davinci-mcasp.c | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/sound/soc/davinci/davinci-mcasp.c b/sound/soc/davinci/davinci-mcasp.c
> index 4495a40..caa0beb 100644
> --- a/sound/soc/davinci/davinci-mcasp.c
> +++ b/sound/soc/davinci/davinci-mcasp.c
> @@ -681,8 +681,8 @@ static int davinci_mcasp_set_tdm_slot(struct snd_soc_dai *dai,
>   	}
>
>   	mcasp->tdm_slots = slots;
> -	mcasp->tdm_mask[SNDRV_PCM_STREAM_PLAYBACK] = rx_mask;
> -	mcasp->tdm_mask[SNDRV_PCM_STREAM_CAPTURE] = tx_mask;
> +	mcasp->tdm_mask[SNDRV_PCM_STREAM_PLAYBACK] = tx_mask;
> +	mcasp->tdm_mask[SNDRV_PCM_STREAM_CAPTURE] = rx_mask;
>   	mcasp->slot_width = slot_width;
>
>   	return davinci_mcasp_set_ch_constraints(mcasp);
>