linux-kernel - Re: [RESEND PATCH v12 4/6] ASoC: amd: add ACP3x TDM mode support

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Date:   Tue, 3 Dec 2019 16:01:41 +0530
From:   "Agrawal, Akshu" <aagrawal2@....com>
To:     Ravulapati Vishnu vardhan rao 
        <Vishnuvardhanrao.Ravulapati@....com>
Cc:     Alexander.Deucher@....com, djkurtz@...gle.com,
        pierre-louis.bossart@...ux.intel.com, Akshu.Agrawal@....com,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Dan Carpenter <dan.carpenter@...cle.com>,
        "moderated list:SOUND - SOC LAYER / DYNAMIC AUDIO POWER MANAGEM..." 
        <alsa-devel@...a-project.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [RESEND PATCH v12 4/6] ASoC: amd: add ACP3x TDM mode support


On 11/22/2019 3:14 PM, Ravulapati Vishnu vardhan rao wrote:
> ACP3x I2S (CPU DAI) can act in normal I2S and TDM modes. Added support
> for TDM mode. Desired mode can be selected from ASoC machine driver.
>
> Signed-off-by: Ravulapati Vishnu vardhan rao <Vishnuvardhanrao.Ravulapati@....com>
> ---
>   sound/soc/amd/raven/acp3x-i2s.c | 24 ++++++++++++++++++++----
>   sound/soc/amd/raven/acp3x.h     |  1 +
>   2 files changed, 21 insertions(+), 4 deletions(-)
>
> diff --git a/sound/soc/amd/raven/acp3x-i2s.c b/sound/soc/amd/raven/acp3x-i2s.c
> index 7f05782..cea7311 100644
> --- a/sound/soc/amd/raven/acp3x-i2s.c
> +++ b/sound/soc/amd/raven/acp3x-i2s.c
> @@ -70,11 +70,27 @@ static int acp3x_i2s_set_tdm_slot(struct snd_soc_dai *cpu_dai,
>   
>   	frm_len = FRM_LEN | (slots << 15) | (slot_len << 18);
>   	if (adata->substream_type == SNDRV_PCM_STREAM_PLAYBACK) {
> -		reg_val = mmACP_BTTDM_ITER;
> -		frmt_val = mmACP_BTTDM_TXFRMT;
> +		switch (adata->i2s_instance) {
> +		case I2S_BT_INSTANCE:
> +			reg_val = mmACP_BTTDM_ITER;
> +			frmt_reg = mmACP_BTTDM_TXFRMT;

Patch 2 of this series declares frmt_val, frmt_reg should cause build 
errors.

Thanks,

Akshu