Unverified Commit 5a06c3ac authored by Vijendar Mukunda's avatar Vijendar Mukunda Committed by Mark Brown
Browse files

ASoC: amd: ps: add pm ops support for SoundWire dma driver 



Add support pm ops support for SoundWire dma driver.

Signed-off-by: default avatarVijendar Mukunda <Vijendar.Mukunda@amd.com>
Link: https://lore.kernel.org/r/20230612095903.2113464-7-Vijendar.Mukunda@amd.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 298d4f7b

sound/soc/amd/ps/ps-sdw-dma.c

+96 −2
Original line number Diff line number Diff line
@@ -12,6 +12,7 @@ 
#include <sound/pcm_params.h>

#include <sound/soc.h>

#include <sound/soc-dai.h>

#include <linux/pm_runtime.h>

#include <linux/soundwire/sdw_amd.h>

#include "acp63.h"
@@ -102,6 +103,29 @@ static const struct snd_pcm_hardware acp63_sdw_hardware_capture = { 
	.periods_max = SDW_CAPTURE_MAX_NUM_PERIODS,

};



static void acp63_enable_disable_sdw_dma_interrupts(void __iomem *acp_base, bool enable)

{

	u32 ext_intr_cntl, ext_intr_cntl1;

	u32 irq_mask = ACP_SDW_DMA_IRQ_MASK;

	u32 irq_mask1 = ACP_P1_SDW_DMA_IRQ_MASK;



	if (enable) {

		ext_intr_cntl = readl(acp_base + ACP_EXTERNAL_INTR_CNTL);

		ext_intr_cntl |= irq_mask;

		writel(ext_intr_cntl, acp_base + ACP_EXTERNAL_INTR_CNTL);

		ext_intr_cntl1 = readl(acp_base + ACP_EXTERNAL_INTR_CNTL1);

		ext_intr_cntl1 |= irq_mask1;

		writel(ext_intr_cntl1, acp_base + ACP_EXTERNAL_INTR_CNTL1);

	} else {

		ext_intr_cntl = readl(acp_base + ACP_EXTERNAL_INTR_CNTL);

		ext_intr_cntl &= ~irq_mask;

		writel(ext_intr_cntl, acp_base + ACP_EXTERNAL_INTR_CNTL);

		ext_intr_cntl1 = readl(acp_base + ACP_EXTERNAL_INTR_CNTL1);

		ext_intr_cntl1 &= ~irq_mask1;

		writel(ext_intr_cntl1, acp_base + ACP_EXTERNAL_INTR_CNTL1);

	}

}



static void acp63_config_dma(struct acp_sdw_dma_stream *stream, void __iomem *acp_base,

			     u32 stream_id)

{
@@ -440,16 +464,86 @@ static int acp63_sdw_platform_probe(struct platform_device *pdev) 
	status = devm_snd_soc_register_component(&pdev->dev,

						 &acp63_sdw_component,

						 NULL, 0);

	if (status)

	if (status) {

		dev_err(&pdev->dev, "Fail to register sdw dma component\n");



		return status;

	}

	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;

}



static int acp63_sdw_platform_remove(struct platform_device *pdev)

{

	pm_runtime_disable(&pdev->dev);

	return 0;

}



static int acp_restore_sdw_dma_config(struct sdw_dma_dev_data *sdw_data)

{

	struct acp_sdw_dma_stream *stream;

	struct snd_pcm_substream *substream;

	struct snd_pcm_runtime *runtime;

	u32 period_bytes, buf_size, water_mark_size_reg;

	u32 stream_count;

	int index, instance, ret;



	for (instance = 0; instance < AMD_SDW_MAX_MANAGERS; instance++) {

		if (instance == ACP_SDW0)

			stream_count = ACP63_SDW0_DMA_MAX_STREAMS;

		else

			stream_count = ACP63_SDW1_DMA_MAX_STREAMS;



		for (index = 0; index < stream_count; index++) {

			if (instance == ACP_SDW0) {

				substream = sdw_data->sdw0_dma_stream[index];

				water_mark_size_reg =

						sdw0_dma_ring_buf_reg[index].water_mark_size_reg;

			} else {

				substream = sdw_data->sdw1_dma_stream[index];

				water_mark_size_reg =

						sdw1_dma_ring_buf_reg[index].water_mark_size_reg;

			}



			if (substream && substream->runtime) {

				runtime = substream->runtime;

				stream = runtime->private_data;

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

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

				acp63_config_dma(stream, sdw_data->acp_base, index);

				ret = acp63_configure_sdw_ringbuffer(sdw_data->acp_base, index,

								     buf_size, instance);

				if (ret)

					return ret;

				writel(period_bytes, sdw_data->acp_base + water_mark_size_reg);

			}

		}

	}

	acp63_enable_disable_sdw_dma_interrupts(sdw_data->acp_base, true);

	return 0;

}



static int __maybe_unused acp63_sdw_pcm_resume(struct device *dev)

{

	struct sdw_dma_dev_data *sdw_data;



	sdw_data = dev_get_drvdata(dev);

	return acp_restore_sdw_dma_config(sdw_data);

}



static const struct dev_pm_ops acp63_pm_ops = {

	SET_SYSTEM_SLEEP_PM_OPS(NULL, acp63_sdw_pcm_resume)

};



static struct platform_driver acp63_sdw_dma_driver = {

	.probe = acp63_sdw_platform_probe,

	.remove = acp63_sdw_platform_remove,

	.driver = {

		.name = "amd_ps_sdw_dma",

		.pm = &acp63_pm_ops,

	},

};