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ASoC: amd: add ACP PDM DMA driver pm ops 

Add ACP PDM DMA driver pm ops.

Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20200518171704.24999-11-Vijendar.Mukunda@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Vijendar Mukunda 2020-05-19 01:17:00 +08:00 committed by Mark Brown
parent c346e768f9
commit 35e4be1136
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GPG Key ID: 24D68B725D5487D0
1 changed files with 53 additions and 0 deletions
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53
sound/soc/amd/renoir/acp3x-pdm-dma.c
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@ -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,
},
};