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Commit 1927da93 authored by Maruthi Srinivas Bayyavarapu's avatar Maruthi Srinivas Bayyavarapu Committed by Mark Brown
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ASoC: AMD: add pm ops 



genpd will power off/on ACP to manage runtime ACP PM. ACP runtime PM
hooks are added to get it deinitialized and initialized respectively,
after it is powered off/on.

When system goes to suspend when audio usecase is active, ACP will
be powered off through genpd. When it resumes, ACP needs to be
initialized and reconfigured.

Signed-off-by: default avatarMaruthi Bayyavarapu <maruthi.bayyavarapu@amd.com>
Reviewed-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 7c31335a

sound/soc/amd/acp-pcm-dma.c

+48 −0
Original line number Diff line number Diff line
@@ -16,6 +16,7 @@ 
#include <linux/module.h>

#include <linux/delay.h>

#include <linux/sizes.h>

#include <linux/pm_runtime.h>



#include <sound/soc.h>
@@ -885,6 +886,10 @@ static int acp_audio_probe(struct platform_device *pdev) 
		return status;

	}



	pm_runtime_set_autosuspend_delay(&pdev->dev, 10000);

	pm_runtime_use_autosuspend(&pdev->dev);

	pm_runtime_enable(&pdev->dev);



	return status;

}
@@ -894,15 +899,58 @@ static int acp_audio_remove(struct platform_device *pdev) 


	acp_deinit(adata->acp_mmio);

	snd_soc_unregister_platform(&pdev->dev);

	pm_runtime_disable(&pdev->dev);



	return 0;

}



static int acp_pcm_resume(struct device *dev)

{

	struct audio_drv_data *adata = dev_get_drvdata(dev);



	acp_init(adata->acp_mmio);



	if (adata->play_stream && adata->play_stream->runtime)

		config_acp_dma(adata->acp_mmio,

				adata->play_stream->runtime->private_data);

	if (adata->capture_stream && adata->capture_stream->runtime)

		config_acp_dma(adata->acp_mmio,

				adata->capture_stream->runtime->private_data);



	acp_reg_write(1, adata->acp_mmio, mmACP_EXTERNAL_INTR_ENB);

	return 0;

}



static int acp_pcm_runtime_suspend(struct device *dev)

{

	struct audio_drv_data *adata = dev_get_drvdata(dev);



	acp_deinit(adata->acp_mmio);

	acp_reg_write(0, adata->acp_mmio, mmACP_EXTERNAL_INTR_ENB);

	return 0;

}



static int acp_pcm_runtime_resume(struct device *dev)

{

	struct audio_drv_data *adata = dev_get_drvdata(dev);



	acp_init(adata->acp_mmio);

	acp_reg_write(1, adata->acp_mmio, mmACP_EXTERNAL_INTR_ENB);

	return 0;

}



static const struct dev_pm_ops acp_pm_ops = {

	.resume = acp_pcm_resume,

	.runtime_suspend = acp_pcm_runtime_suspend,

	.runtime_resume = acp_pcm_runtime_resume,

};



static struct platform_driver acp_dma_driver = {

	.probe = acp_audio_probe,

	.remove = acp_audio_remove,

	.driver = {

		.name = "acp_audio_dma",

		.pm = &acp_pm_ops,

	},

};