linux-kernel - Re: [PATCH 12/13] ASoC: amd: acp: Add pci legacy driver support for acp7.0 platform

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Date:   Mon, 23 Oct 2023 09:50:41 +0200
From:   Amadeusz Sławiński 
        <amadeuszx.slawinski@...ux.intel.com>
To:     Syed Saba Kareem <Syed.SabaKareem@....com>, broonie@...nel.org,
        alsa-devel@...a-project.org
Cc:     Vijendar.Mukunda@....com, Basavaraj.Hiregoudar@....com,
        Sunil-kumar.Dommati@....com, mario.limonciello@....com,
        venkataprasad.potturu@....com, arungopal.kondaveeti@....com,
        mastan.katragadda@....com, juan.martinez@....com,
        Liam Girdwood <lgirdwood@...il.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>,
        V Sujith Kumar Reddy <vsujithkumar.reddy@....com>,
        Marian Postevca <posteuca@...ex.one>,
        Jarkko Nikula <jarkko.nikula@...mer.com>,
        Claudiu Beznea <claudiu.beznea@...rochip.com>,
        Uwe Kleine-König <u.kleine-koenig@...gutronix.de>,
        Yang Li <yang.lee@...ux.alibaba.com>,
        Dan Carpenter <dan.carpenter@...aro.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 12/13] ASoC: amd: acp: Add pci legacy driver support for
 acp7.0 platform

On 10/21/2023 4:50 PM, Syed Saba Kareem wrote:
> Add pci legacy driver support and create platform driver for
> acp7.0 platform.
> 
> Signed-off-by: Syed Saba Kareem <Syed.SabaKareem@....com>
> ---

...

> +
> +static struct snd_soc_dai_driver acp70_dai[] = {
> +{
> +	.name = "acp-i2s-sp",
> +	.id = I2S_SP_INSTANCE,
> +	.playback = {
> +		.stream_name = "I2S SP Playback",
> +		.rates = SNDRV_PCM_RATE_8000_96000,
> +		.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 |
> +			   SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S32_LE,

Any reason to not go from lowest bit width to higher? Similarly in 
further definitions.

> +		.channels_min = 2,
> +		.channels_max = 8,
> +		.rate_min = 8000,
> +		.rate_max = 96000,
> +	},

...

> +
> +static int __maybe_unused acp70_pcm_resume(struct device *dev)
> +{
> +	struct acp_dev_data *adata = dev_get_drvdata(dev);
> +	struct acp_stream *stream;
> +	struct snd_pcm_substream *substream;
> +	snd_pcm_uframes_t buf_in_frames;
> +	u64 buf_size;
> +
> +	spin_lock(&adata->acp_lock);
> +	list_for_each_entry(stream, &adata->stream_list, list) {
> +		if (stream) {
> +			substream = stream->substream;
> +			if (substream && substream->runtime) {
> +				buf_in_frames = (substream->runtime->buffer_size);
> +				buf_size = frames_to_bytes(substream->runtime, buf_in_frames);
> +				config_pte_for_stream(adata, stream);
> +				config_acp_dma(adata, stream, buf_size);
> +				if (stream->dai_id)
> +					restore_acp_i2s_params(substream, adata, stream);
> +				else
> +					restore_acp_pdm_params(substream, adata);
> +			}
> +		}
> +	}
> +		spin_unlock(&adata->acp_lock);
> +		return 0;

Indentation is wrong in above two lines.

> +}
> +
> +static const struct dev_pm_ops acp70_dma_pm_ops = {
> +	SET_SYSTEM_SLEEP_PM_OPS(NULL, acp70_pcm_resume)
> +};
> +