Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

5 files changed, 987 insertions, 0 deletions

diff --git a/sound/soc/amd/ps/Makefile b/sound/soc/amd/ps/Makefile
new file mode 100644
index 000000000..383973a12
--- /dev/null
+++ b/sound/soc/amd/ps/Makefile
@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: GPL-2.0+
+# Pink Sardine platform Support
+snd-pci-ps-objs := pci-ps.o
+snd-ps-pdm-dma-objs := ps-pdm-dma.o
+snd-soc-ps-mach-objs := ps-mach.o
+
+obj-$(CONFIG_SND_SOC_AMD_PS) += snd-pci-ps.o
+obj-$(CONFIG_SND_SOC_AMD_PS) += snd-ps-pdm-dma.o
+obj-$(CONFIG_SND_SOC_AMD_PS_MACH)   += snd-soc-ps-mach.o
diff --git a/sound/soc/amd/ps/acp63.h b/sound/soc/amd/ps/acp63.h
new file mode 100644
index 000000000..85f869c22
--- /dev/null
+++ b/sound/soc/amd/ps/acp63.h
@@ -0,0 +1,98 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * AMD ALSA SoC PDM Driver
+ *
+ * Copyright (C) 2022 Advanced Micro Devices, Inc. All rights reserved.
+ */
+
+#include <sound/acp63_chip_offset_byte.h>
+
+#define ACP_DEVICE_ID 0x15E2
+#define ACP6x_REG_START		0x1240000
+#define ACP6x_REG_END		0x1250200
+#define ACP6x_DEVS		3
+#define ACP6x_PDM_MODE		1
+
+#define ACP_SOFT_RESET_SOFTRESET_AUDDONE_MASK	0x00010001
+#define ACP_PGFSM_CNTL_POWER_ON_MASK	1
+#define ACP_PGFSM_CNTL_POWER_OFF_MASK	0
+#define ACP_PGFSM_STATUS_MASK		3
+#define ACP_POWERED_ON			0
+#define ACP_POWER_ON_IN_PROGRESS	1
+#define ACP_POWERED_OFF		2
+#define ACP_POWER_OFF_IN_PROGRESS	3
+
+#define ACP_ERROR_MASK 0x20000000
+#define ACP_EXT_INTR_STAT_CLEAR_MASK 0xFFFFFFFF
+#define PDM_DMA_STAT 0x10
+
+#define PDM_DMA_INTR_MASK	0x10000
+#define ACP_ERROR_STAT	29
+#define PDM_DECIMATION_FACTOR	2
+#define ACP_PDM_CLK_FREQ_MASK	7
+#define ACP_WOV_MISC_CTRL_MASK	0x10
+#define ACP_PDM_ENABLE		1
+#define ACP_PDM_DISABLE		0
+#define ACP_PDM_DMA_EN_STATUS	2
+#define TWO_CH		2
+#define DELAY_US	5
+#define ACP_COUNTER	20000
+
+#define ACP_SRAM_PTE_OFFSET	0x03800000
+#define PAGE_SIZE_4K_ENABLE	2
+#define PDM_PTE_OFFSET		0
+#define PDM_MEM_WINDOW_START	0x4000000
+
+#define CAPTURE_MIN_NUM_PERIODS     4
+#define CAPTURE_MAX_NUM_PERIODS     4
+#define CAPTURE_MAX_PERIOD_SIZE     8192
+#define CAPTURE_MIN_PERIOD_SIZE     4096
+
+#define MAX_BUFFER (CAPTURE_MAX_PERIOD_SIZE * CAPTURE_MAX_NUM_PERIODS)
+#define MIN_BUFFER MAX_BUFFER
+
+/* time in ms for runtime suspend delay */
+#define ACP_SUSPEND_DELAY_MS	2000
+
+enum acp_config {
+	ACP_CONFIG_0 = 0,
+	ACP_CONFIG_1,
+	ACP_CONFIG_2,
+	ACP_CONFIG_3,
+	ACP_CONFIG_4,
+	ACP_CONFIG_5,
+	ACP_CONFIG_6,
+	ACP_CONFIG_7,
+	ACP_CONFIG_8,
+	ACP_CONFIG_9,
+	ACP_CONFIG_10,
+	ACP_CONFIG_11,
+	ACP_CONFIG_12,
+	ACP_CONFIG_13,
+	ACP_CONFIG_14,
+	ACP_CONFIG_15,
+};
+
+struct pdm_stream_instance {
+	u16 num_pages;
+	u16 channels;
+	dma_addr_t dma_addr;
+	u64 bytescount;
+	void __iomem *acp63_base;
+};
+
+struct pdm_dev_data {
+	u32 pdm_irq;
+	void __iomem *acp63_base;
+	struct snd_pcm_substream *capture_stream;
+};
+
+static inline u32 acp63_readl(void __iomem *base_addr)
+{
+	return readl(base_addr);
+}
+
+static inline void acp63_writel(u32 val, void __iomem *base_addr)
+{
+	writel(val, base_addr);
+}
diff --git a/sound/soc/amd/ps/pci-ps.c b/sound/soc/amd/ps/pci-ps.c
new file mode 100644
index 000000000..7c9751a7e
--- /dev/null
+++ b/sound/soc/amd/ps/pci-ps.c
@@ -0,0 +1,349 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * AMD Pink Sardine ACP PCI Driver
+ *
+ * Copyright 2022 Advanced Micro Devices, Inc.
+ */
+
+#include <linux/pci.h>
+#include <linux/module.h>
+#include <linux/io.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/acpi.h>
+#include <linux/interrupt.h>
+#include <sound/pcm_params.h>
+#include <linux/pm_runtime.h>
+
+#include "acp63.h"
+
+struct acp63_dev_data {
+	void __iomem *acp63_base;
+	struct resource *res;
+	bool acp63_audio_mode;
+	struct platform_device *pdev[ACP6x_DEVS];
+};
+
+static int acp63_power_on(void __iomem *acp_base)
+{
+	u32 val;
+	int timeout;
+
+	val = acp63_readl(acp_base + ACP_PGFSM_STATUS);
+
+	if (!val)
+		return val;
+
+	if ((val & ACP_PGFSM_STATUS_MASK) != ACP_POWER_ON_IN_PROGRESS)
+		acp63_writel(ACP_PGFSM_CNTL_POWER_ON_MASK, acp_base + ACP_PGFSM_CONTROL);
+	timeout = 0;
+	while (++timeout < 500) {
+		val = acp63_readl(acp_base + ACP_PGFSM_STATUS);
+		if (!val)
+			return 0;
+		udelay(1);
+	}
+	return -ETIMEDOUT;
+}
+
+static int acp63_reset(void __iomem *acp_base)
+{
+	u32 val;
+	int timeout;
+
+	acp63_writel(1, acp_base + ACP_SOFT_RESET);
+	timeout = 0;
+	while (++timeout < 500) {
+		val = acp63_readl(acp_base + ACP_SOFT_RESET);
+		if (val & ACP_SOFT_RESET_SOFTRESET_AUDDONE_MASK)
+			break;
+		cpu_relax();
+	}
+	acp63_writel(0, acp_base + ACP_SOFT_RESET);
+	timeout = 0;
+	while (++timeout < 500) {
+		val = acp63_readl(acp_base + ACP_SOFT_RESET);
+		if (!val)
+			return 0;
+		cpu_relax();
+	}
+	return -ETIMEDOUT;
+}
+
+static void acp63_enable_interrupts(void __iomem *acp_base)
+{
+	acp63_writel(1, acp_base + ACP_EXTERNAL_INTR_ENB);
+}
+
+static void acp63_disable_interrupts(void __iomem *acp_base)
+{
+	acp63_writel(ACP_EXT_INTR_STAT_CLEAR_MASK, acp_base +
+		     ACP_EXTERNAL_INTR_STAT);
+	acp63_writel(0, acp_base + ACP_EXTERNAL_INTR_CNTL);
+	acp63_writel(0, acp_base + ACP_EXTERNAL_INTR_ENB);
+}
+
+static int acp63_init(void __iomem *acp_base, struct device *dev)
+{
+	int ret;
+
+	ret = acp63_power_on(acp_base);
+	if (ret) {
+		dev_err(dev, "ACP power on failed\n");
+		return ret;
+	}
+	acp63_writel(0x01, acp_base + ACP_CONTROL);
+	ret = acp63_reset(acp_base);
+	if (ret) {
+		dev_err(dev, "ACP reset failed\n");
+		return ret;
+	}
+	acp63_enable_interrupts(acp_base);
+	return 0;
+}
+
+static int acp63_deinit(void __iomem *acp_base, struct device *dev)
+{
+	int ret;
+
+	acp63_disable_interrupts(acp_base);
+	ret = acp63_reset(acp_base);
+	if (ret) {
+		dev_err(dev, "ACP reset failed\n");
+		return ret;
+	}
+	acp63_writel(0, acp_base + ACP_CONTROL);
+	return 0;
+}
+
+static irqreturn_t acp63_irq_handler(int irq, void *dev_id)
+{
+	struct acp63_dev_data *adata;
+	struct pdm_dev_data *ps_pdm_data;
+	u32 val;
+
+	adata = dev_id;
+	if (!adata)
+		return IRQ_NONE;
+
+	val = acp63_readl(adata->acp63_base + ACP_EXTERNAL_INTR_STAT);
+	if (val & BIT(PDM_DMA_STAT)) {
+		ps_pdm_data = dev_get_drvdata(&adata->pdev[0]->dev);
+		acp63_writel(BIT(PDM_DMA_STAT), adata->acp63_base + ACP_EXTERNAL_INTR_STAT);
+		if (ps_pdm_data->capture_stream)
+			snd_pcm_period_elapsed(ps_pdm_data->capture_stream);
+		return IRQ_HANDLED;
+	}
+	return IRQ_NONE;
+}
+
+static int snd_acp63_probe(struct pci_dev *pci,
+			   const struct pci_device_id *pci_id)
+{
+	struct acp63_dev_data *adata;
+	struct platform_device_info pdevinfo[ACP6x_DEVS];
+	int index, ret;
+	int val = 0x00;
+	struct acpi_device *adev;
+	const union acpi_object *obj;
+	u32 addr;
+	unsigned int irqflags;
+
+	irqflags = IRQF_SHARED;
+	/* Pink Sardine device check */
+	switch (pci->revision) {
+	case 0x63:
+		break;
+	default:
+		dev_dbg(&pci->dev, "acp63 pci device not found\n");
+		return -ENODEV;
+	}
+	if (pci_enable_device(pci)) {
+		dev_err(&pci->dev, "pci_enable_device failed\n");
+		return -ENODEV;
+	}
+
+	ret = pci_request_regions(pci, "AMD ACP6.2 audio");
+	if (ret < 0) {
+		dev_err(&pci->dev, "pci_request_regions failed\n");
+		goto disable_pci;
+	}
+	adata = devm_kzalloc(&pci->dev, sizeof(struct acp63_dev_data),
+			     GFP_KERNEL);
+	if (!adata) {
+		ret = -ENOMEM;
+		goto release_regions;
+	}
+
+	addr = pci_resource_start(pci, 0);
+	adata->acp63_base = devm_ioremap(&pci->dev, addr,
+					 pci_resource_len(pci, 0));
+	if (!adata->acp63_base) {
+		ret = -ENOMEM;
+		goto release_regions;
+	}
+	pci_set_master(pci);
+	pci_set_drvdata(pci, adata);
+	ret = acp63_init(adata->acp63_base, &pci->dev);
+	if (ret)
+		goto release_regions;
+	val = acp63_readl(adata->acp63_base + ACP_PIN_CONFIG);
+	switch (val) {
+	case ACP_CONFIG_0:
+	case ACP_CONFIG_1:
+	case ACP_CONFIG_2:
+	case ACP_CONFIG_3:
+	case ACP_CONFIG_9:
+	case ACP_CONFIG_15:
+		dev_info(&pci->dev, "Audio Mode %d\n", val);
+		break;
+	default:
+
+		/* Checking DMIC hardware*/
+		adev = acpi_find_child_device(ACPI_COMPANION(&pci->dev), 0x02, 0);
+
+		if (!adev)
+			break;
+
+		if (!acpi_dev_get_property(adev, "acp-audio-device-type",
+					   ACPI_TYPE_INTEGER, &obj) &&
+					   obj->integer.value == 2) {
+			adata->res = devm_kzalloc(&pci->dev, sizeof(struct resource), GFP_KERNEL);
+			if (!adata->res) {
+				ret = -ENOMEM;
+				goto de_init;
+			}
+
+			adata->res->name = "acp_iomem";
+			adata->res->flags = IORESOURCE_MEM;
+			adata->res->start = addr;
+			adata->res->end = addr + (ACP6x_REG_END - ACP6x_REG_START);
+			adata->acp63_audio_mode = ACP6x_PDM_MODE;
+
+			memset(&pdevinfo, 0, sizeof(pdevinfo));
+			pdevinfo[0].name = "acp_ps_pdm_dma";
+			pdevinfo[0].id = 0;
+			pdevinfo[0].parent = &pci->dev;
+			pdevinfo[0].num_res = 1;
+			pdevinfo[0].res = adata->res;
+
+			pdevinfo[1].name = "dmic-codec";
+			pdevinfo[1].id = 0;
+			pdevinfo[1].parent = &pci->dev;
+
+			pdevinfo[2].name = "acp_ps_mach";
+			pdevinfo[2].id = 0;
+			pdevinfo[2].parent = &pci->dev;
+
+			for (index = 0; index < ACP6x_DEVS; index++) {
+				adata->pdev[index] =
+					platform_device_register_full(&pdevinfo[index]);
+
+				if (IS_ERR(adata->pdev[index])) {
+					dev_err(&pci->dev,
+						"cannot register %s device\n",
+						 pdevinfo[index].name);
+					ret = PTR_ERR(adata->pdev[index]);
+					goto unregister_devs;
+				}
+				ret = devm_request_irq(&pci->dev, pci->irq, acp63_irq_handler,
+						       irqflags, "ACP_PCI_IRQ", adata);
+				if (ret) {
+					dev_err(&pci->dev, "ACP PCI IRQ request failed\n");
+					goto unregister_devs;
+				}
+			}
+		}
+		break;
+	}
+	pm_runtime_set_autosuspend_delay(&pci->dev, ACP_SUSPEND_DELAY_MS);
+	pm_runtime_use_autosuspend(&pci->dev);
+	pm_runtime_put_noidle(&pci->dev);
+	pm_runtime_allow(&pci->dev);
+	return 0;
+unregister_devs:
+	for (--index; index >= 0; index--)
+		platform_device_unregister(adata->pdev[index]);
+de_init:
+	if (acp63_deinit(adata->acp63_base, &pci->dev))
+		dev_err(&pci->dev, "ACP de-init failed\n");
+release_regions:
+	pci_release_regions(pci);
+disable_pci:
+	pci_disable_device(pci);
+
+	return ret;
+}
+
+static int __maybe_unused snd_acp63_suspend(struct device *dev)
+{
+	struct acp63_dev_data *adata;
+	int ret;
+
+	adata = dev_get_drvdata(dev);
+	ret = acp63_deinit(adata->acp63_base, dev);
+	if (ret)
+		dev_err(dev, "ACP de-init failed\n");
+	return ret;
+}
+
+static int __maybe_unused snd_acp63_resume(struct device *dev)
+{
+	struct acp63_dev_data *adata;
+	int ret;
+
+	adata = dev_get_drvdata(dev);
+	ret = acp63_init(adata->acp63_base, dev);
+	if (ret)
+		dev_err(dev, "ACP init failed\n");
+	return ret;
+}
+
+static const struct dev_pm_ops acp63_pm_ops = {
+	SET_RUNTIME_PM_OPS(snd_acp63_suspend, snd_acp63_resume, NULL)
+	SET_SYSTEM_SLEEP_PM_OPS(snd_acp63_suspend, snd_acp63_resume)
+};
+
+static void snd_acp63_remove(struct pci_dev *pci)
+{
+	struct acp63_dev_data *adata;
+	int ret, index;
+
+	adata = pci_get_drvdata(pci);
+	if (adata->acp63_audio_mode == ACP6x_PDM_MODE) {
+		for (index = 0; index < ACP6x_DEVS; index++)
+			platform_device_unregister(adata->pdev[index]);
+	}
+	ret = acp63_deinit(adata->acp63_base, &pci->dev);
+	if (ret)
+		dev_err(&pci->dev, "ACP de-init failed\n");
+	pm_runtime_forbid(&pci->dev);
+	pm_runtime_get_noresume(&pci->dev);
+	pci_release_regions(pci);
+	pci_disable_device(pci);
+}
+
+static const struct pci_device_id snd_acp63_ids[] = {
+	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, ACP_DEVICE_ID),
+	.class = PCI_CLASS_MULTIMEDIA_OTHER << 8,
+	.class_mask = 0xffffff },
+	{ 0, },
+};
+MODULE_DEVICE_TABLE(pci, snd_acp63_ids);
+
+static struct pci_driver ps_acp63_driver  = {
+	.name = KBUILD_MODNAME,
+	.id_table = snd_acp63_ids,
+	.probe = snd_acp63_probe,
+	.remove = snd_acp63_remove,
+	.driver = {
+		.pm = &acp63_pm_ops,
+	}
+};
+
+module_pci_driver(ps_acp63_driver);
+
+MODULE_AUTHOR("Vijendar.Mukunda@amd.com");
+MODULE_AUTHOR("Syed.SabaKareem@amd.com");
+MODULE_DESCRIPTION("AMD ACP Pink Sardine PCI driver");
+MODULE_LICENSE("GPL v2");
diff --git a/sound/soc/amd/ps/ps-mach.c b/sound/soc/amd/ps/ps-mach.c
new file mode 100644
index 000000000..3ffbe4fda
--- /dev/null
+++ b/sound/soc/amd/ps/ps-mach.c
@@ -0,0 +1,79 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Machine driver for AMD Pink Sardine platform using DMIC
+ *
+ * Copyright 2022 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 <linux/dmi.h>
+
+#include "acp63.h"
+
+#define DRV_NAME "acp_ps_mach"
+
+SND_SOC_DAILINK_DEF(acp63_pdm,
+		    DAILINK_COMP_ARRAY(COMP_CPU("acp_ps_pdm_dma.0")));
+
+SND_SOC_DAILINK_DEF(dmic_codec,
+		    DAILINK_COMP_ARRAY(COMP_CODEC("dmic-codec.0",
+						  "dmic-hifi")));
+
+SND_SOC_DAILINK_DEF(pdm_platform,
+		    DAILINK_COMP_ARRAY(COMP_PLATFORM("acp_ps_pdm_dma.0")));
+
+static struct snd_soc_dai_link acp63_dai_pdm[] = {
+	{
+		.name = "acp63-dmic-capture",
+		.stream_name = "DMIC capture",
+		.capture_only = 1,
+		SND_SOC_DAILINK_REG(acp63_pdm, dmic_codec, pdm_platform),
+	},
+};
+
+static struct snd_soc_card acp63_card = {
+	.name = "acp63",
+	.owner = THIS_MODULE,
+	.dai_link = acp63_dai_pdm,
+	.num_links = 1,
+};
+
+static int acp63_probe(struct platform_device *pdev)
+{
+	struct acp63_pdm *machine = NULL;
+	struct snd_soc_card *card;
+	int ret;
+
+	platform_set_drvdata(pdev, &acp63_card);
+	card = platform_get_drvdata(pdev);
+	acp63_card.dev = &pdev->dev;
+
+	snd_soc_card_set_drvdata(card, machine);
+	ret = devm_snd_soc_register_card(&pdev->dev, card);
+	if (ret) {
+		return dev_err_probe(&pdev->dev, ret,
+				"snd_soc_register_card(%s) failed\n",
+				card->name);
+	}
+
+	return 0;
+}
+
+static struct platform_driver acp63_mach_driver = {
+	.driver = {
+		.name = "acp_ps_mach",
+		.pm = &snd_soc_pm_ops,
+	},
+	.probe = acp63_probe,
+};
+
+module_platform_driver(acp63_mach_driver);
+
+MODULE_AUTHOR("Syed.SabaKareem@amd.com");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:" DRV_NAME);
diff --git a/sound/soc/amd/ps/ps-pdm-dma.c b/sound/soc/amd/ps/ps-pdm-dma.c
new file mode 100644
index 000000000..eea71a9d2
--- /dev/null
+++ b/sound/soc/amd/ps/ps-pdm-dma.c
@@ -0,0 +1,452 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * AMD ALSA SoC Pink Sardine PDM Driver
+ *
+ * Copyright 2022 Advanced Micro Devices, Inc.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-dai.h>
+#include <linux/pm_runtime.h>
+
+#include "acp63.h"
+
+#define DRV_NAME "acp_ps_pdm_dma"
+
+static const struct snd_pcm_hardware acp63_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 void acp63_init_pdm_ring_buffer(u32 physical_addr, u32 buffer_size,
+				       u32 watermark_size, void __iomem *acp_base)
+{
+	acp63_writel(physical_addr, acp_base + ACP_WOV_RX_RINGBUFADDR);
+	acp63_writel(buffer_size, acp_base + ACP_WOV_RX_RINGBUFSIZE);
+	acp63_writel(watermark_size, acp_base + ACP_WOV_RX_INTR_WATERMARK_SIZE);
+	acp63_writel(0x01, acp_base + ACPAXI2AXI_ATU_CTRL);
+}
+
+static void acp63_enable_pdm_clock(void __iomem *acp_base)
+{
+	u32 pdm_clk_enable, pdm_ctrl;
+
+	pdm_clk_enable = ACP_PDM_CLK_FREQ_MASK;
+	pdm_ctrl = 0x00;
+
+	acp63_writel(pdm_clk_enable, acp_base + ACP_WOV_CLK_CTRL);
+	pdm_ctrl = acp63_readl(acp_base + ACP_WOV_MISC_CTRL);
+	pdm_ctrl |= ACP_WOV_MISC_CTRL_MASK;
+	acp63_writel(pdm_ctrl, acp_base + ACP_WOV_MISC_CTRL);
+}
+
+static void acp63_enable_pdm_interrupts(void __iomem *acp_base)
+{
+	u32 ext_int_ctrl;
+
+	ext_int_ctrl = acp63_readl(acp_base + ACP_EXTERNAL_INTR_CNTL);
+	ext_int_ctrl |= PDM_DMA_INTR_MASK;
+	acp63_writel(ext_int_ctrl, acp_base + ACP_EXTERNAL_INTR_CNTL);
+}
+
+static void acp63_disable_pdm_interrupts(void __iomem *acp_base)
+{
+	u32 ext_int_ctrl;
+
+	ext_int_ctrl = acp63_readl(acp_base + ACP_EXTERNAL_INTR_CNTL);
+	ext_int_ctrl &= ~PDM_DMA_INTR_MASK;
+	acp63_writel(ext_int_ctrl, acp_base + ACP_EXTERNAL_INTR_CNTL);
+}
+
+static bool acp63_check_pdm_dma_status(void __iomem *acp_base)
+{
+	bool pdm_dma_status;
+	u32 pdm_enable, pdm_dma_enable;
+
+	pdm_dma_status = false;
+	pdm_enable = acp63_readl(acp_base + ACP_WOV_PDM_ENABLE);
+	pdm_dma_enable = acp63_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 acp63_start_pdm_dma(void __iomem *acp_base)
+{
+	u32 pdm_enable;
+	u32 pdm_dma_enable;
+	int timeout;
+
+	pdm_enable = 0x01;
+	pdm_dma_enable  = 0x01;
+
+	acp63_enable_pdm_clock(acp_base);
+	acp63_writel(pdm_enable, acp_base + ACP_WOV_PDM_ENABLE);
+	acp63_writel(pdm_dma_enable, acp_base + ACP_WOV_PDM_DMA_ENABLE);
+	timeout = 0;
+	while (++timeout < ACP_COUNTER) {
+		pdm_dma_enable = acp63_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 acp63_stop_pdm_dma(void __iomem *acp_base)
+{
+	u32 pdm_enable, pdm_dma_enable;
+	int timeout;
+
+	pdm_enable = 0x00;
+	pdm_dma_enable  = 0x00;
+
+	pdm_enable = acp63_readl(acp_base + ACP_WOV_PDM_ENABLE);
+	pdm_dma_enable = acp63_readl(acp_base + ACP_WOV_PDM_DMA_ENABLE);
+	if (pdm_dma_enable & 0x01) {
+		pdm_dma_enable = 0x02;
+		acp63_writel(pdm_dma_enable, acp_base + ACP_WOV_PDM_DMA_ENABLE);
+		timeout = 0;
+		while (++timeout < ACP_COUNTER) {
+			pdm_dma_enable = acp63_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;
+		acp63_writel(pdm_enable, acp_base + ACP_WOV_PDM_ENABLE);
+	}
+	acp63_writel(0x01, acp_base + ACP_WOV_PDM_FIFO_FLUSH);
+	return 0;
+}
+
+static void acp63_config_dma(struct pdm_stream_instance *rtd, int direction)
+{
+	u16 page_idx;
+	u32 low, high, val;
+	dma_addr_t addr;
+
+	addr = rtd->dma_addr;
+	val = PDM_PTE_OFFSET;
+
+	/* Group Enable */
+	acp63_writel(ACP_SRAM_PTE_OFFSET | BIT(31), rtd->acp63_base +
+		     ACPAXI2AXI_ATU_BASE_ADDR_GRP_1);
+	acp63_writel(PAGE_SIZE_4K_ENABLE, rtd->acp63_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);
+
+		acp63_writel(low, rtd->acp63_base + ACP_SCRATCH_REG_0 + val);
+		high |= BIT(31);
+		acp63_writel(high, rtd->acp63_base + ACP_SCRATCH_REG_0 + val + 4);
+		val += 8;
+		addr += PAGE_SIZE;
+	}
+}
+
+static int acp63_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 = acp63_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;
+	}
+
+	acp63_enable_pdm_interrupts(adata->acp63_base);
+
+	if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
+		adata->capture_stream = substream;
+
+	pdm_data->acp63_base = adata->acp63_base;
+	runtime->private_data = pdm_data;
+	return ret;
+}
+
+static int acp63_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->runtime->dma_addr;
+	rtd->num_pages = (PAGE_ALIGN(size) >> PAGE_SHIFT);
+	acp63_config_dma(rtd, substream->stream);
+	acp63_init_pdm_ring_buffer(PDM_MEM_WINDOW_START, size,
+				   period_bytes, rtd->acp63_base);
+	return 0;
+}
+
+static u64 acp63_pdm_get_byte_count(struct pdm_stream_instance *rtd,
+				    int direction)
+{
+	u32 high, low;
+	u64 byte_count;
+
+	high = acp63_readl(rtd->acp63_base + ACP_WOV_RX_LINEARPOSITIONCNTR_HIGH);
+	byte_count = high;
+	low = acp63_readl(rtd->acp63_base + ACP_WOV_RX_LINEARPOSITIONCNTR_LOW);
+	byte_count = (byte_count << 32) | low;
+	return byte_count;
+}
+
+static snd_pcm_uframes_t acp63_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 = acp63_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 acp63_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 acp63_pdm_dma_close(struct snd_soc_component *component,
+			       struct snd_pcm_substream *substream)
+{
+	struct pdm_dev_data *adata = dev_get_drvdata(component->dev);
+	struct snd_pcm_runtime *runtime = substream->runtime;
+
+	acp63_disable_pdm_interrupts(adata->acp63_base);
+	adata->capture_stream = NULL;
+	kfree(runtime->private_data);
+	return 0;
+}
+
+static int acp63_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;
+	unsigned int ch_mask;
+
+	rtd = substream->runtime->private_data;
+	ret = 0;
+	switch (substream->runtime->channels) {
+	case TWO_CH:
+		ch_mask = 0x00;
+		break;
+	default:
+		return -EINVAL;
+	}
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+	case SNDRV_PCM_TRIGGER_RESUME:
+	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+		acp63_writel(ch_mask, rtd->acp63_base + ACP_WOV_PDM_NO_OF_CHANNELS);
+		acp63_writel(PDM_DECIMATION_FACTOR, rtd->acp63_base +
+			     ACP_WOV_PDM_DECIMATION_FACTOR);
+		rtd->bytescount = acp63_pdm_get_byte_count(rtd, substream->stream);
+		pdm_status = acp63_check_pdm_dma_status(rtd->acp63_base);
+		if (!pdm_status)
+			ret = acp63_start_pdm_dma(rtd->acp63_base);
+		break;
+	case SNDRV_PCM_TRIGGER_STOP:
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+		pdm_status = acp63_check_pdm_dma_status(rtd->acp63_base);
+		if (pdm_status)
+			ret = acp63_stop_pdm_dma(rtd->acp63_base);
+		break;
+	default:
+		ret = -EINVAL;
+		break;
+	}
+	return ret;
+}
+
+static const struct snd_soc_dai_ops acp63_pdm_dai_ops = {
+	.trigger   = acp63_pdm_dai_trigger,
+};
+
+static struct snd_soc_dai_driver acp63_pdm_dai_driver = {
+	.name = "acp_ps_pdm_dma.0",
+	.capture = {
+		.rates = SNDRV_PCM_RATE_48000,
+		.formats = SNDRV_PCM_FMTBIT_S32_LE,
+		.channels_min = 2,
+		.channels_max = 2,
+		.rate_min = 48000,
+		.rate_max = 48000,
+	},
+	.ops = &acp63_pdm_dai_ops,
+};
+
+static const struct snd_soc_component_driver acp63_pdm_component = {
+	.name		= DRV_NAME,
+	.open		= acp63_pdm_dma_open,
+	.close		= acp63_pdm_dma_close,
+	.hw_params	= acp63_pdm_dma_hw_params,
+	.pointer	= acp63_pdm_dma_pointer,
+	.pcm_construct	= acp63_pdm_dma_new,
+};
+
+static int acp63_pdm_audio_probe(struct platform_device *pdev)
+{
+	struct resource *res;
+	struct pdm_dev_data *adata;
+	int status;
+
+	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->acp63_base = devm_ioremap(&pdev->dev, res->start, resource_size(res));
+	if (!adata->acp63_base)
+		return -ENOMEM;
+
+	adata->capture_stream = NULL;
+
+	dev_set_drvdata(&pdev->dev, adata);
+	status = devm_snd_soc_register_component(&pdev->dev,
+						 &acp63_pdm_component,
+						 &acp63_pdm_dai_driver, 1);
+	if (status) {
+		dev_err(&pdev->dev, "Fail to register acp pdm dai\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 acp63_pdm_audio_remove(struct platform_device *pdev)
+{
+	pm_runtime_disable(&pdev->dev);
+	return 0;
+}
+
+static int __maybe_unused acp63_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);
+		acp63_config_dma(rtd, SNDRV_PCM_STREAM_CAPTURE);
+		acp63_init_pdm_ring_buffer(PDM_MEM_WINDOW_START, buffer_len,
+					   period_bytes, adata->acp63_base);
+	}
+	acp63_enable_pdm_interrupts(adata->acp63_base);
+	return 0;
+}
+
+static int __maybe_unused acp63_pdm_suspend(struct device *dev)
+{
+	struct pdm_dev_data *adata;
+
+	adata = dev_get_drvdata(dev);
+	acp63_disable_pdm_interrupts(adata->acp63_base);
+	return 0;
+}
+
+static int __maybe_unused acp63_pdm_runtime_resume(struct device *dev)
+{
+	struct pdm_dev_data *adata;
+
+	adata = dev_get_drvdata(dev);
+	acp63_enable_pdm_interrupts(adata->acp63_base);
+	return 0;
+}
+
+static const struct dev_pm_ops acp63_pdm_pm_ops = {
+	SET_RUNTIME_PM_OPS(acp63_pdm_suspend, acp63_pdm_runtime_resume, NULL)
+	SET_SYSTEM_SLEEP_PM_OPS(acp63_pdm_suspend, acp63_pdm_resume)
+};
+
+static struct platform_driver acp63_pdm_dma_driver = {
+	.probe = acp63_pdm_audio_probe,
+	.remove = acp63_pdm_audio_remove,
+	.driver = {
+		.name = "acp_ps_pdm_dma",
+		.pm = &acp63_pdm_pm_ops,
+	},
+};
+
+module_platform_driver(acp63_pdm_dma_driver);
+
+MODULE_AUTHOR("Syed.SabaKareem@amd.com");
+MODULE_DESCRIPTION("AMD PINK SARDINE PDM Driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:" DRV_NAME);