Unverified Commit 35e4be11 authored by Vijendar Mukunda's avatar Vijendar Mukunda Committed by Mark Brown
Browse files

ASoC: amd: add ACP PDM DMA driver pm ops 



Add ACP PDM DMA driver pm ops.

Signed-off-by: default avatarVijendar Mukunda <Vijendar.Mukunda@amd.com>
Reviewed-by: default avatarPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20200518171704.24999-11-Vijendar.Mukunda@amd.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent c346e768

sound/soc/amd/renoir/acp3x-pdm-dma.c

+53 −0
Original line number Diff line number Diff line
@@ -8,6 +8,7 @@ 
#include <linux/module.h>

#include <linux/err.h>

#include <linux/io.h>

#include <linux/pm_runtime.h>

#include <sound/pcm_params.h>

#include <sound/soc.h>

#include <sound/soc-dai.h>
@@ -453,19 +454,71 @@ static int acp_pdm_audio_probe(struct platform_device *pdev) 
		dev_err(&pdev->dev, "ACP PDM IRQ request failed\n");

		return -ENODEV;

	}

	pm_runtime_set_autosuspend_delay(&pdev->dev, ACP_SUSPEND_DELAY_MS);

	pm_runtime_use_autosuspend(&pdev->dev);

	pm_runtime_enable(&pdev->dev);

	pm_runtime_allow(&pdev->dev);

	return 0;

}



static int acp_pdm_audio_remove(struct platform_device *pdev)

{

	pm_runtime_disable(&pdev->dev);

	return 0;

}



static int acp_pdm_resume(struct device *dev)

{

	struct pdm_dev_data *adata;

	struct snd_pcm_runtime *runtime;

	struct pdm_stream_instance *rtd;

	u32 period_bytes, buffer_len;



	adata = dev_get_drvdata(dev);

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

		runtime = adata->capture_stream->runtime;

		rtd = runtime->private_data;

		period_bytes = frames_to_bytes(runtime, runtime->period_size);

		buffer_len = frames_to_bytes(runtime, runtime->buffer_size);

		config_acp_dma(rtd, SNDRV_PCM_STREAM_CAPTURE);

		init_pdm_ring_buffer(MEM_WINDOW_START, buffer_len, period_bytes,

				     adata->acp_base);

	}

	enable_pdm_interrupts(adata->acp_base);

	return 0;

}



static int acp_pdm_runtime_suspend(struct device *dev)

{

	struct pdm_dev_data *adata;



	adata = dev_get_drvdata(dev);

	disable_pdm_interrupts(adata->acp_base);



	return 0;

}



static int acp_pdm_runtime_resume(struct device *dev)

{

	struct pdm_dev_data *adata;



	adata = dev_get_drvdata(dev);

	enable_pdm_interrupts(adata->acp_base);

	return 0;

}



static const struct dev_pm_ops acp_pdm_pm_ops = {

	.runtime_suspend = acp_pdm_runtime_suspend,

	.runtime_resume = acp_pdm_runtime_resume,

	.resume = acp_pdm_resume,

};



static struct platform_driver acp_pdm_dma_driver = {

	.probe = acp_pdm_audio_probe,

	.remove = acp_pdm_audio_remove,

	.driver = {

		.name = "acp_rn_pdm_dma",

		.pm = &acp_pdm_pm_ops,

	},

};