linux-kernel - RE: [PATCH 0/2] ASoC: da7219: BCLK and TDM flexibility improvements

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Date:   Thu, 14 Feb 2019 09:33:31 +0000
From:   Adam Thomson <Adam.Thomson.Opensource@...semi.com>
To:     Adam Thomson <Adam.Thomson.Opensource@...semi.com>,
        Mark Brown <broonie@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Takashi Iwai <tiwai@...e.com>, Jaroslav Kysela <perex@...ex.cz>
CC:     Akshu Agrawal <Akshu.Agrawal@....com>,
        "alsa-devel@...a-project.org" <alsa-devel@...a-project.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Support Opensource <Support.Opensource@...semi.com>
Subject: RE: [PATCH 0/2] ASoC: da7219: BCLK and TDM flexibility improvements

On 13 February 2019 17:48, Adam Thomson wrote:

 This patch set updates the driver to be more flexible regarding the BCLK and TDM
> configurations of the device.
> 
> Previously the BCLK rate was fixed at 64 periods per WCLK, when the codec is DAI
> clock master, but to satisfy devices which prefer a lower rate, and to save power,
> the BCLK rate is now calculated based on hw_params() data.
> 
> As a fallout of the BCLK efforts it was also apparent that the TDM code could be
> made more flexible as well. The device is capable of automatically detecting the
> BCLK rate when it is clock slave, so previous limitations imposed were not
> necessary. The mask handling is now used as an input to determine the BCLK
> offset to align closer with other examples within ALSA.

Spotted a silly '&' instead of '&&' error in the 1st patch. Functionally will work
but technically should be updated. Will send V2 soon.

> 
> Adam Thomson (2):
>   ASoC: da7219: Add support for master mode BCLK rate adjustment
>   ASoC: da7219: Update TDM usage to be more flexible
> 
>  sound/soc/codecs/da7219.c | 116 +++++++++++++++++++++++++++++----------
> -------
>  sound/soc/codecs/da7219.h |   1 +
>  2 files changed, 74 insertions(+), 43 deletions(-)
> 
> --
> 1.9.1