Unverified Commit 95325ab3 authored by Mark Brown's avatar Mark Brown
Browse files

Merge series "Add Renoir ACP driver" from Vijendar Mukunda <Vijendar.Mukunda@amd.com>: 

This adds an ASoC driver for the ACP (Audio CoProcessor)
block on AMD Renoir APUs.

V3:
- Changed PCI driver PM runtime sequence
- Removed redundant code in Renoir machine driver

V2:
- Removed empty declaration of dai_ops
- Removed SNDRV_PCM_INFO_BATCH flag
- Defined Macros for delay and counter and corrected dma stop sequence.
- Changed PCI driver pm runtime sequence
- Removed redundant code

Vijendar Mukunda (14):
  ASoC: amd: add Renoir ACP3x IP register header
  ASoC: amd: add Renoir ACP PCI driver
  ASoC: amd: add acp init/de-init functions
  ASoC: amd: create acp3x pdm platform device
  ASoC: amd: add ACP3x PDM platform driver
  ASoC: amd: irq handler changes for ACP3x PDM dma driver
  ASoC: amd: add acp3x pdm driver dma ops
  ASoC: amd: add ACP PDM DMA driver dai ops
  ASoC: amd: add Renoir ACP PCI driver PM ops
  ASoC: amd: add ACP PDM DMA driver pm ops
  ASoC: amd: enable Renoir acp3x drivers build
  ASoC: amd: create platform devices for Renoir
  ASoC: amd: RN machine driver using dmic
  ASoC: amd: enable build for RN machine driver

 sound/soc/amd/Kconfig                      |  13 +
 sound/soc/amd/Makefile                     |   1 +
 sound/soc/amd/renoir/Makefile              |   7 +
 sound/soc/amd/renoir/acp3x-pdm-dma.c       | 530 +++++++++++++++++++++
 sound/soc/amd/renoir/acp3x-rn.c            |  77 +++
 sound/soc/amd/renoir/rn-pci-acp3x.c        | 344 +++++++++++++
 sound/soc/amd/renoir/rn_acp3x.h            |  88 ++++
 sound/soc/amd/renoir/rn_chip_offset_byte.h | 349 ++++++++++++++
 8 files changed, 1409 insertions(+)
 create mode 100644 sound/soc/amd/renoir/Makefile
 create mode 100644 sound/soc/amd/renoir/acp3x-pdm-dma.c
 create mode 100644 sound/soc/amd/renoir/acp3x-rn.c
 create mode 100644 sound/soc/amd/renoir/rn-pci-acp3x.c
 create mode 100644 sound/soc/amd/renoir/rn_acp3x.h
 create mode 100644 sound/soc/amd/renoir/rn_chip_offset_byte.h

--
2.26.2
parents a62ed960 1d377666

sound/soc/amd/Kconfig

+13 −0
Original line number Diff line number Diff line
@@ -36,3 +36,16 @@ config SND_SOC_AMD_RV_RT5682_MACH 
	depends on SND_SOC_AMD_ACP3x && I2C && CROS_EC

	help

	 This option enables machine driver for RT5682 and MAX9835.



config SND_SOC_AMD_RENOIR

	tristate "AMD Audio Coprocessor - Renoir support"

	depends on X86 && PCI

	help

	 This option enables ACP support for Renoir platform



config SND_SOC_AMD_RENOIR_MACH

	tristate "AMD Renoir support for DMIC"

	select SND_SOC_DMIC

	depends on SND_SOC_AMD_RENOIR

	help

	 This option enables machine driver for DMIC

sound/soc/amd/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -9,3 +9,4 @@ obj-$(CONFIG_SND_SOC_AMD_CZ_DA7219MX98357_MACH) += snd-soc-acp-da7219mx98357-mac 
obj-$(CONFIG_SND_SOC_AMD_CZ_RT5645_MACH) += snd-soc-acp-rt5645-mach.o

obj-$(CONFIG_SND_SOC_AMD_ACP3x) += raven/

obj-$(CONFIG_SND_SOC_AMD_RV_RT5682_MACH) += snd-soc-acp-rt5682-mach.o

obj-$(CONFIG_SND_SOC_AMD_RENOIR) += renoir/

sound/soc/amd/renoir/Makefile

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+7 −0
Original line number Diff line number Diff line 
# SPDX-License-Identifier: GPL-2.0+

# Renoir platform Support

snd-rn-pci-acp3x-objs	:= rn-pci-acp3x.o

snd-acp3x-pdm-dma-objs	:= acp3x-pdm-dma.o

obj-$(CONFIG_SND_SOC_AMD_RENOIR)	 += snd-rn-pci-acp3x.o

obj-$(CONFIG_SND_SOC_AMD_RENOIR)	 += snd-acp3x-pdm-dma.o

obj-$(CONFIG_SND_SOC_AMD_RENOIR_MACH)	+= acp3x-rn.o

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

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Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0+

//

// AMD ALSA SoC PDM Driver

//

//Copyright 2020 Advanced Micro Devices, Inc.



#include <linux/platform_device.h>

#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>



#include "rn_acp3x.h"



#define DRV_NAME "acp_rn_pdm_dma"



static const struct snd_pcm_hardware acp_pdm_hardware_capture = {

	.info = SNDRV_PCM_INFO_INTERLEAVED |

		SNDRV_PCM_INFO_BLOCK_TRANSFER |

		SNDRV_PCM_INFO_MMAP |

		SNDRV_PCM_INFO_MMAP_VALID |

		SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME,

	.formats = SNDRV_PCM_FMTBIT_S32_LE,

	.channels_min = 2,

	.channels_max = 2,

	.rates = SNDRV_PCM_RATE_48000,

	.rate_min = 48000,

	.rate_max = 48000,

	.buffer_bytes_max = CAPTURE_MAX_NUM_PERIODS * CAPTURE_MAX_PERIOD_SIZE,

	.period_bytes_min = CAPTURE_MIN_PERIOD_SIZE,

	.period_bytes_max = CAPTURE_MAX_PERIOD_SIZE,

	.periods_min = CAPTURE_MIN_NUM_PERIODS,

	.periods_max = CAPTURE_MAX_NUM_PERIODS,

};



static irqreturn_t pdm_irq_handler(int irq, void *dev_id)

{

	struct pdm_dev_data *rn_pdm_data;

	u16 cap_flag;

	u32 val;



	rn_pdm_data = dev_id;

	if (!rn_pdm_data)

		return IRQ_NONE;



	cap_flag = 0;

	val = rn_readl(rn_pdm_data->acp_base + ACP_EXTERNAL_INTR_STAT);

	if ((val & BIT(PDM_DMA_STAT)) && rn_pdm_data->capture_stream) {

		rn_writel(BIT(PDM_DMA_STAT), rn_pdm_data->acp_base +

			  ACP_EXTERNAL_INTR_STAT);

		snd_pcm_period_elapsed(rn_pdm_data->capture_stream);

		cap_flag = 1;

	}



	if (cap_flag)

		return IRQ_HANDLED;

	else

		return IRQ_NONE;

}



static void init_pdm_ring_buffer(u32 physical_addr,

				 u32 buffer_size,

				 u32 watermark_size,

				 void __iomem *acp_base)

{

	rn_writel(physical_addr, acp_base + ACP_WOV_RX_RINGBUFADDR);

	rn_writel(buffer_size, acp_base + ACP_WOV_RX_RINGBUFSIZE);

	rn_writel(watermark_size, acp_base + ACP_WOV_RX_INTR_WATERMARK_SIZE);

	rn_writel(0x01, acp_base + ACPAXI2AXI_ATU_CTRL);

}



static void config_pdm_stream_params(unsigned int ch_mask,

				     void __iomem *acp_base)

{

	rn_writel(ch_mask, acp_base + ACP_WOV_PDM_NO_OF_CHANNELS);

	rn_writel(PDM_DECIMATION_FACTOR, acp_base +

		  ACP_WOV_PDM_DECIMATION_FACTOR);

}



static void enable_pdm_clock(void __iomem *acp_base)

{

	u32 pdm_clk_enable, pdm_ctrl;



	pdm_clk_enable = ACP_PDM_CLK_FREQ_MASK;

	pdm_ctrl = 0x00;



	rn_writel(pdm_clk_enable, acp_base + ACP_WOV_CLK_CTRL);

	pdm_ctrl = rn_readl(acp_base + ACP_WOV_MISC_CTRL);

	pdm_ctrl |= ACP_WOV_MISC_CTRL_MASK;

	rn_writel(pdm_ctrl, acp_base + ACP_WOV_MISC_CTRL);

}



static void enable_pdm_interrupts(void __iomem *acp_base)

{

	u32 ext_int_ctrl;



	ext_int_ctrl = rn_readl(acp_base + ACP_EXTERNAL_INTR_CNTL);

	ext_int_ctrl |= PDM_DMA_INTR_MASK;

	rn_writel(ext_int_ctrl, acp_base + ACP_EXTERNAL_INTR_CNTL);

}



static void disable_pdm_interrupts(void __iomem *acp_base)

{

	u32 ext_int_ctrl;



	ext_int_ctrl = rn_readl(acp_base + ACP_EXTERNAL_INTR_CNTL);

	ext_int_ctrl |= ~PDM_DMA_INTR_MASK;

	rn_writel(ext_int_ctrl, acp_base + ACP_EXTERNAL_INTR_CNTL);

}



static bool check_pdm_dma_status(void __iomem *acp_base)

{

	bool pdm_dma_status;

	u32 pdm_enable, pdm_dma_enable;



	pdm_dma_status = false;

	pdm_enable = rn_readl(acp_base + ACP_WOV_PDM_ENABLE);

	pdm_dma_enable = rn_readl(acp_base + ACP_WOV_PDM_DMA_ENABLE);

	if ((pdm_enable & ACP_PDM_ENABLE) && (pdm_dma_enable &

	     ACP_PDM_DMA_EN_STATUS))

		pdm_dma_status = true;

	return pdm_dma_status;

}



static int start_pdm_dma(void __iomem *acp_base)

{

	u32 pdm_enable;

	u32 pdm_dma_enable;

	int timeout;



	pdm_enable = 0x01;

	pdm_dma_enable  = 0x01;



	enable_pdm_clock(acp_base);

	rn_writel(pdm_enable, acp_base + ACP_WOV_PDM_ENABLE);

	rn_writel(pdm_dma_enable, acp_base + ACP_WOV_PDM_DMA_ENABLE);

	pdm_dma_enable = 0x00;

	timeout = 0;

	while (++timeout < ACP_COUNTER) {

		pdm_dma_enable = rn_readl(acp_base + ACP_WOV_PDM_DMA_ENABLE);

		if ((pdm_dma_enable & 0x02) == ACP_PDM_DMA_EN_STATUS)

			return 0;

		udelay(DELAY_US);

	}

	return -ETIMEDOUT;

}



static int stop_pdm_dma(void __iomem *acp_base)

{

	u32 pdm_enable, pdm_dma_enable, pdm_fifo_flush;

	int timeout;



	pdm_enable = 0x00;

	pdm_dma_enable  = 0x00;

	pdm_fifo_flush = 0x00;



	pdm_enable = rn_readl(acp_base + ACP_WOV_PDM_ENABLE);

	pdm_dma_enable = rn_readl(acp_base + ACP_WOV_PDM_DMA_ENABLE);

	if (pdm_dma_enable & 0x01) {

		pdm_dma_enable = 0x02;

		rn_writel(pdm_dma_enable, acp_base + ACP_WOV_PDM_DMA_ENABLE);

		pdm_dma_enable = 0x00;

		timeout = 0;

		while (++timeout < ACP_COUNTER) {

			pdm_dma_enable = rn_readl(acp_base +

						  ACP_WOV_PDM_DMA_ENABLE);

			if ((pdm_dma_enable & 0x02) == 0x00)

				break;

			udelay(DELAY_US);

		}

		if (timeout == ACP_COUNTER)

			return -ETIMEDOUT;

	}

	if (pdm_enable == ACP_PDM_ENABLE) {

		pdm_enable = ACP_PDM_DISABLE;

		rn_writel(pdm_enable, acp_base + ACP_WOV_PDM_ENABLE);

	}

	rn_writel(0x01, acp_base + ACP_WOV_PDM_FIFO_FLUSH);

	return 0;

}



static void config_acp_dma(struct pdm_stream_instance *rtd, int direction)

{

	u16 page_idx;

	u32 low, high, val;

	dma_addr_t addr;



	addr = rtd->dma_addr;

	val = 0;



	/* Group Enable */

	rn_writel(ACP_SRAM_PTE_OFFSET | BIT(31), rtd->acp_base +

		  ACPAXI2AXI_ATU_BASE_ADDR_GRP_1);

	rn_writel(PAGE_SIZE_4K_ENABLE, rtd->acp_base +

		  ACPAXI2AXI_ATU_PAGE_SIZE_GRP_1);



	for (page_idx = 0; page_idx < rtd->num_pages; page_idx++) {

		/* Load the low address of page int ACP SRAM through SRBM */

		low = lower_32_bits(addr);

		high = upper_32_bits(addr);



		rn_writel(low, rtd->acp_base + ACP_SCRATCH_REG_0 + val);

		high |= BIT(31);

		rn_writel(high, rtd->acp_base + ACP_SCRATCH_REG_0 + val + 4);

		val += 8;

		addr += PAGE_SIZE;

	}

}



static int acp_pdm_dma_open(struct snd_soc_component *component,

			    struct snd_pcm_substream *substream)

{

	struct snd_pcm_runtime *runtime;

	struct pdm_dev_data *adata;

	struct pdm_stream_instance *pdm_data;

	int ret;



	runtime = substream->runtime;

	adata = dev_get_drvdata(component->dev);

	pdm_data = kzalloc(sizeof(*pdm_data), GFP_KERNEL);

	if (!pdm_data)

		return -EINVAL;



	if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)

		runtime->hw = acp_pdm_hardware_capture;



	ret = snd_pcm_hw_constraint_integer(runtime,

					    SNDRV_PCM_HW_PARAM_PERIODS);

	if (ret < 0) {

		dev_err(component->dev, "set integer constraint failed\n");

		kfree(pdm_data);

		return ret;

	}



	enable_pdm_interrupts(adata->acp_base);



	if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)

		adata->capture_stream = substream;



	pdm_data->acp_base = adata->acp_base;

	runtime->private_data = pdm_data;

	return ret;

}



static int acp_pdm_dma_hw_params(struct snd_soc_component *component,

				 struct snd_pcm_substream *substream,

				 struct snd_pcm_hw_params *params)

{

	struct pdm_stream_instance *rtd;

	size_t size, period_bytes;



	rtd = substream->runtime->private_data;

	if (!rtd)

		return -EINVAL;

	size = params_buffer_bytes(params);

	period_bytes = params_period_bytes(params);

	rtd->dma_addr = substream->dma_buffer.addr;

	rtd->num_pages = (PAGE_ALIGN(size) >> PAGE_SHIFT);

	config_acp_dma(rtd, substream->stream);

	init_pdm_ring_buffer(MEM_WINDOW_START, size, period_bytes,

			     rtd->acp_base);

	return 0;

}



static u64 acp_pdm_get_byte_count(struct pdm_stream_instance *rtd,

				  int direction)

{

	union acp_pdm_dma_count byte_count;



	byte_count.bcount.high =

			rn_readl(rtd->acp_base +

				 ACP_WOV_RX_LINEARPOSITIONCNTR_HIGH);

	byte_count.bcount.low =

			rn_readl(rtd->acp_base +

				 ACP_WOV_RX_LINEARPOSITIONCNTR_LOW);

	return byte_count.bytescount;

}



static snd_pcm_uframes_t acp_pdm_dma_pointer(struct snd_soc_component *comp,

					     struct snd_pcm_substream *stream)

{

	struct pdm_stream_instance *rtd;

	u32 pos, buffersize;

	u64 bytescount;



	rtd = stream->runtime->private_data;

	buffersize = frames_to_bytes(stream->runtime,

				     stream->runtime->buffer_size);

	bytescount = acp_pdm_get_byte_count(rtd, stream->stream);

	if (bytescount > rtd->bytescount)

		bytescount -= rtd->bytescount;

	pos = do_div(bytescount, buffersize);

	return bytes_to_frames(stream->runtime, pos);

}



static int acp_pdm_dma_new(struct snd_soc_component *component,

			   struct snd_soc_pcm_runtime *rtd)

{

	struct device *parent = component->dev->parent;



	snd_pcm_set_managed_buffer_all(rtd->pcm, SNDRV_DMA_TYPE_DEV,

				       parent, MIN_BUFFER, MAX_BUFFER);

	return 0;

}



static int acp_pdm_dma_mmap(struct snd_soc_component *component,

			    struct snd_pcm_substream *substream,

			    struct vm_area_struct *vma)

{

	return snd_pcm_lib_default_mmap(substream, vma);

}



static int acp_pdm_dma_close(struct snd_soc_component *component,

			     struct snd_pcm_substream *substream)

{

	struct pdm_dev_data *adata = dev_get_drvdata(component->dev);



	disable_pdm_interrupts(adata->acp_base);

	adata->capture_stream = NULL;

	return 0;

}



static int acp_pdm_dai_hw_params(struct snd_pcm_substream *substream,

				 struct snd_pcm_hw_params *params,

				 struct snd_soc_dai *dai)

{

	struct pdm_stream_instance *rtd;

	unsigned int ch_mask;



	rtd = substream->runtime->private_data;

	switch (params_channels(params)) {

	case TWO_CH:

	default:

		ch_mask = 0x00;

		break;

	}

	config_pdm_stream_params(ch_mask, rtd->acp_base);

	return 0;

}



static int acp_pdm_dai_trigger(struct snd_pcm_substream *substream,

			       int cmd, struct snd_soc_dai *dai)

{

	struct pdm_stream_instance *rtd;

	int ret;

	bool pdm_status;



	rtd = substream->runtime->private_data;

	ret = 0;

	switch (cmd) {

	case SNDRV_PCM_TRIGGER_START:

	case SNDRV_PCM_TRIGGER_RESUME:

	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:

		rtd->bytescount = acp_pdm_get_byte_count(rtd,

							 substream->stream);

		pdm_status = check_pdm_dma_status(rtd->acp_base);

		if (!pdm_status)

			ret = start_pdm_dma(rtd->acp_base);

		break;

	case SNDRV_PCM_TRIGGER_STOP:

	case SNDRV_PCM_TRIGGER_SUSPEND:

	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:

		pdm_status = check_pdm_dma_status(rtd->acp_base);

		if (pdm_status)

			ret = stop_pdm_dma(rtd->acp_base);

		break;

	default:

		ret = -EINVAL;

		break;

	}

	return ret;

}



static struct snd_soc_dai_ops acp_pdm_dai_ops = {

	.hw_params = acp_pdm_dai_hw_params,

	.trigger   = acp_pdm_dai_trigger,

};



static struct snd_soc_dai_driver acp_pdm_dai_driver = {

	.capture = {

		.rates = SNDRV_PCM_RATE_48000,

		.formats = SNDRV_PCM_FMTBIT_S24_LE |

			   SNDRV_PCM_FMTBIT_S32_LE,

		.channels_min = 2,

		.channels_max = 2,

		.rate_min = 48000,

		.rate_max = 48000,

	},

	.ops = &acp_pdm_dai_ops,

};



static const struct snd_soc_component_driver acp_pdm_component = {

	.name		= DRV_NAME,

	.open		= acp_pdm_dma_open,

	.close		= acp_pdm_dma_close,

	.hw_params	= acp_pdm_dma_hw_params,

	.pointer	= acp_pdm_dma_pointer,

	.mmap		= acp_pdm_dma_mmap,

	.pcm_construct	= acp_pdm_dma_new,

};



static int acp_pdm_audio_probe(struct platform_device *pdev)

{

	struct resource *res;

	struct pdm_dev_data *adata;

	unsigned int irqflags;

	int status;



	if (!pdev->dev.platform_data) {

		dev_err(&pdev->dev, "platform_data not retrieved\n");

		return -ENODEV;

	}

	irqflags = *((unsigned int *)(pdev->dev.platform_data));



	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	if (!res) {

		dev_err(&pdev->dev, "IORESOURCE_MEM FAILED\n");

		return -ENODEV;

	}



	adata = devm_kzalloc(&pdev->dev, sizeof(*adata), GFP_KERNEL);

	if (!adata)

		return -ENOMEM;



	adata->acp_base = devm_ioremap(&pdev->dev, res->start,

				       resource_size(res));

	if (!adata->acp_base)

		return -ENOMEM;



	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);

	if (!res) {

		dev_err(&pdev->dev, "IORESOURCE_IRQ FAILED\n");

		return -ENODEV;

	}



	adata->pdm_irq = res->start;

	adata->capture_stream = NULL;



	dev_set_drvdata(&pdev->dev, adata);

	status = devm_snd_soc_register_component(&pdev->dev,

						 &acp_pdm_component,

						 &acp_pdm_dai_driver, 1);

	if (status) {

		dev_err(&pdev->dev, "Fail to register acp pdm dai\n");



		return -ENODEV;

	}

	status = devm_request_irq(&pdev->dev, adata->pdm_irq, pdm_irq_handler,

				  irqflags, "ACP_PDM_IRQ", adata);

	if (status) {

		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,

	},

};



module_platform_driver(acp_pdm_dma_driver);



MODULE_AUTHOR("Vijendar.Mukunda@amd.com");

MODULE_DESCRIPTION("AMD ACP3x Renior PDM Driver");

MODULE_LICENSE("GPL v2");

MODULE_ALIAS("platform:" DRV_NAME);

sound/soc/amd/renoir/acp3x-rn.c

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// SPDX-License-Identifier: GPL-2.0+

//

// Machine driver for AMD Renoir platform using DMIC

//

//Copyright 2020 Advanced Micro Devices, Inc.



#include <sound/soc.h>

#include <sound/soc-dapm.h>

#include <linux/module.h>

#include <sound/pcm.h>

#include <sound/pcm_params.h>

#include <linux/io.h>



#include "rn_acp3x.h"



#define DRV_NAME "acp_pdm_mach"



SND_SOC_DAILINK_DEF(acp_pdm,

		    DAILINK_COMP_ARRAY(COMP_CPU("acp_rn_pdm_dma.0")));



SND_SOC_DAILINK_DEF(dmic_codec,

		    DAILINK_COMP_ARRAY(COMP_CODEC("dmic-codec.0",

						  "dmic-hifi")));



SND_SOC_DAILINK_DEF(platform,

		    DAILINK_COMP_ARRAY(COMP_PLATFORM("acp_rn_pdm_dma.0")));



static struct snd_soc_dai_link acp_dai_pdm[] = {

	{

		.name = "acp3x-dmic-capture",

		.stream_name = "DMIC capture",

		.capture_only = 1,

		SND_SOC_DAILINK_REG(acp_pdm, dmic_codec, platform),

	},

};



static struct snd_soc_card acp_card = {

	.name = "acp",

	.owner = THIS_MODULE,

	.dai_link = acp_dai_pdm,

	.num_links = 1,

};



static int acp_probe(struct platform_device *pdev)

{

	int ret;

	struct acp_pdm *machine = NULL;

	struct snd_soc_card *card;



	card = &acp_card;

	acp_card.dev = &pdev->dev;



	platform_set_drvdata(pdev, card);

	snd_soc_card_set_drvdata(card, machine);

	ret = devm_snd_soc_register_card(&pdev->dev, card);

	if (ret) {

		dev_err(&pdev->dev,

			"snd_soc_register_card(%s) failed: %d\n",

			acp_card.name, ret);

		return ret;

	}

	return 0;

}



static struct platform_driver acp_mach_driver = {

	.driver = {

		.name = "acp_pdm_mach",

		.pm = &snd_soc_pm_ops,

	},

	.probe = acp_probe,

};



module_platform_driver(acp_mach_driver);



MODULE_AUTHOR("Vijendar.Mukunda@amd.com");

MODULE_LICENSE("GPL v2");

MODULE_ALIAS("platform:" DRV_NAME);