Re: [PATCH V2 2/2] ASoC: amd: acp: add pm ops support for renoir platform

[Linux regression tracking (Thorsten Leemhuis)]

Hi, Thorsten here, the Linux kernel's regression tracker. Top-posting
for once, to make this easily accessible to everyone.

Does anyone know what happened to below patch? It afaics was meant to
fix a regression that made it into 6.6. For details see:

https://lore.kernel.org/lkml/87a5v8szhc.fsf@xxxxxxxxx/
https://lore.kernel.org/lkml/ac9d4f7b-c7af-4d21-b0b8-d0f188b94b0f@xxxxxxx/

Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)
--
Everything you wanna know about Linux kernel regression tracking:
https://linux-regtracking.leemhuis.info/about/#tldr
If I did something stupid, please tell me, as explained on that page.

On 13.11.23 13:33, Syed Saba Kareem wrote:
> Add pm ops for renoir platform.
> 
> Signed-off-by: Syed Saba Kareem <Syed.SabaKareem@xxxxxxx>
> ---
>  sound/soc/amd/acp/acp-renoir.c | 38 +++++++++++++++++++++++++++++++++-
>  1 file changed, 37 insertions(+), 1 deletion(-)
> 
> diff --git a/sound/soc/amd/acp/acp-renoir.c b/sound/soc/amd/acp/acp-renoir.c
> index a591482a0726..8539fbacdf4c 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"
> @@ -195,7 +196,11 @@ static int renoir_audio_probe(struct platform_device *pdev)
>  	dev_set_drvdata(dev, adata);
>  	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 +213,42 @@ 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,
>  	},
>  };
>