Re: [RESEND] ASoC: amd: acp: add pm ops support for renoir platform.

[Mario Limonciello <mario.limonciello@amd.com>]

On 12/15/2023 07:02, Syed Saba Kareem wrote:
> Add pm ops for renoir platform.
> 
> Signed-off-by: Syed Saba Kareem <Syed.SabaKareem@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
> ---
>   sound/soc/amd/acp/acp-renoir.c | 37 ++++++++++++++++++++++++++++++++++
>   1 file changed, 37 insertions(+)
> 
> diff --git a/sound/soc/amd/acp/acp-renoir.c b/sound/soc/amd/acp/acp-renoir.c
> index a591482a0726..b0e181c9a733 100644
> --- a/sound/soc/amd/acp/acp-renoir.c
> +++ b/sound/soc/amd/acp/acp-renoir.c
> @@ -20,6 +20,7 @@
>   #include <sound/soc.h>
>   #include <sound/soc-dai.h>
>   #include <linux/dma-mapping.h>
> +#include <linux/pm_runtime.h>
>   
>   #include "amd.h"
>   #include "acp-mach.h"
> @@ -196,6 +197,11 @@ static int renoir_audio_probe(struct platform_device *pdev)
>   	acp_enable_interrupts(adata);
>   	acp_platform_register(dev);
>   
> +	pm_runtime_set_autosuspend_delay(&pdev->dev, ACP_SUSPEND_DELAY_MS);
> +	pm_runtime_use_autosuspend(&pdev->dev);
> +	pm_runtime_mark_last_busy(&pdev->dev);
> +	pm_runtime_set_active(&pdev->dev);
> +	pm_runtime_enable(&pdev->dev);
>   	return 0;
>   }
>   
> @@ -208,11 +214,42 @@ static void renoir_audio_remove(struct platform_device *pdev)
>   	acp_platform_unregister(dev);
>   }
>   
> +static int __maybe_unused rn_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) {
> +		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;
> +}
> +
> +static const struct dev_pm_ops rn_dma_pm_ops = {
> +	SET_SYSTEM_SLEEP_PM_OPS(NULL, rn_pcm_resume)
> +};
> +
>   static struct platform_driver renoir_driver = {
>   	.probe = renoir_audio_probe,
>   	.remove_new = renoir_audio_remove,
>   	.driver = {
>   		.name = "acp_asoc_renoir",
> +		.pm = &rn_dma_pm_ops,
>   	},
>   };
>