linux-kernel - Re: [PATCH] ASoC: qcom: SC7280: Update machine driver startup, shutdown callbacks

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Date:   Tue, 19 Apr 2022 15:09:10 +0530
From:   Srinivasa Rao Mandadapu <quic_srivasam@...cinc.com>
To:     Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        <agross@...nel.org>, <bjorn.andersson@...aro.org>,
        <lgirdwood@...il.com>, <broonie@...nel.org>, <robh+dt@...nel.org>,
        <quic_plai@...cinc.com>, <bgoswami@...cinc.com>, <perex@...ex.cz>,
        <tiwai@...e.com>, <quic_rohkumar@...cinc.com>,
        <linux-arm-msm@...r.kernel.org>, <alsa-devel@...a-project.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <swboyd@...omium.org>, <judyhsiao@...omium.org>
CC:     Venkata Prasad Potturu <quic_potturu@...cinc.com>
Subject: Re: [PATCH] ASoC: qcom: SC7280: Update machine driver startup,
 shutdown callbacks


On 4/19/2022 2:49 PM, Srinivas Kandagatla wrote:
Thanks for your time Srini!!
>
>
> On 19/04/2022 08:16, Srinivasa Rao Mandadapu wrote:
>> Update machine driver startup, shutdown callback functions to support
>> codec DMA paths. Without this change, platforms with WCD codec is 
>> failing
>> to register sound card.
>>
>> Signed-off-by: Srinivasa Rao Mandadapu <quic_srivasam@...cinc.com>
>> Co-developed-by: Venkata Prasad Potturu <quic_potturu@...cinc.com>
>> Signed-off-by: Venkata Prasad Potturu <quic_potturu@...cinc.com>
>> ---
>>   sound/soc/qcom/sc7280.c | 8 ++++++++
>>   1 file changed, 8 insertions(+)
>>
>> diff --git a/sound/soc/qcom/sc7280.c b/sound/soc/qcom/sc7280.c
>> index 4ef4034..d64df11 100644
>> --- a/sound/soc/qcom/sc7280.c
>> +++ b/sound/soc/qcom/sc7280.c
>> @@ -295,6 +295,10 @@ static void sc7280_snd_shutdown(struct 
>> snd_pcm_substream *substream)
>>           break;
>>       case LPASS_DP_RX:
>>           break;
>> +    case LPASS_CDC_DMA_RX0 ... LPASS_CDC_DMA_RX9:
>> +    case LPASS_CDC_DMA_TX0 ... LPASS_CDC_DMA_TX8:
>> +    case LPASS_CDC_DMA_VA_TX0 ... LPASS_CDC_DMA_VA_TX8:
>> +        break;
>>       default:
>>           dev_err(rtd->dev, "%s: invalid dai id 0x%x\n", __func__,
>>               cpu_dai->id);
>
> Why not just make sc7280_snd_startup code like this:
>
> static int sc7280_snd_startup(struct snd_pcm_substream *substream)
> {
>     struct snd_soc_pcm_runtime *rtd = substream->private_data;
>     struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
>     int ret = 0;
>
>     switch (cpu_dai->id) {
>     case MI2S_PRIMARY:
>         ret = sc7280_rt5682_init(rtd);
>         break;
>     default:
>         break;
>     }
>     return ret;
> }
>
> and sc7280_snd_shutdown with something similar

Yes. we can do as you suggested. Then Shall I do it as fix to a commit?

i.e. c5198db ASoC: qcom: Add driver support for ALC5682I-VS

>
> --srini
>> @@ -316,6 +320,10 @@ static int sc7280_snd_startup(struct 
>> snd_pcm_substream *substream)
>>           break;
>>       case LPASS_DP_RX:
>>           break;
>> +    case LPASS_CDC_DMA_RX0 ... LPASS_CDC_DMA_RX9:
>> +    case LPASS_CDC_DMA_TX0 ... LPASS_CDC_DMA_TX8:
>> +    case LPASS_CDC_DMA_VA_TX0 ... LPASS_CDC_DMA_VA_TX8:
>> +        break;
>>       default:
>>           dev_err(rtd->dev, "%s: invalid dai id 0x%x\n", __func__,
>>               cpu_dai->id);