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

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On 12/15/2023 07:02, Syed Saba Kareem wrote:
Add pm ops for renoir platform.

Signed-off-by: Syed Saba Kareem <Syed.SabaKareem@xxxxxxx>
Reviewed-by: Mario Limonciello <mario.limonciello@xxxxxxx>
---
  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,
  	},
  };





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