ASoC: SOF: Intel: Add support for MeteorLake (MTL)

Add platform abstraction for the Meteor Lake platform.

This platform has significant differences compared to the TGL/ADL
generation: it relies on new hardware using the code name 'ACE' and
only supports the INTEL_IPC4 protocol and firmware architecture based
on the Zephyr RTOS

Co-developed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Link: https://lore.kernel.org/r/20220615084348.3489-3-yung-chuan.liao@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

include/linux/soundwire/sdw_intel.h

@@ -9,6 +9,8 @@
 
 #define SDW_SHIM_BASE			0x2C000
 #define SDW_ALH_BASE			0x2C800
+#define SDW_SHIM_BASE_ACE		0x38000
+#define SDW_ALH_BASE_ACE		0x24000
 #define SDW_LINK_BASE			0x30000
 #define SDW_LINK_SIZE			0x10000
 

sound/soc/sof/intel/Kconfig

@@ -221,6 +221,22 @@ config SND_SOC_SOF_ALDERLAKE
 	  Say Y if you have such a device.
 	  If unsure select "N".
 
+config SND_SOC_SOF_INTEL_MTL
+	tristate
+	select SND_SOC_SOF_HDA_COMMON
+	select SND_SOC_SOF_INTEL_SOUNDWIRE_LINK_BASELINE
+	select SND_SOC_SOF_INTEL_IPC4
+
+config SND_SOC_SOF_METEORLAKE
+	tristate "SOF support for Meteorlake"
+	default SND_SOC_SOF_PCI
+	select SND_SOC_SOF_INTEL_MTL
+	help
+	  This adds support for Sound Open Firmware for Intel(R) platforms
+	  using the Meteorlake processors.
+	  Say Y if you have such a device.
+	  If unsure select "N".
+
 config SND_SOC_SOF_HDA_COMMON
 	tristate
 	select SND_SOC_SOF_INTEL_COMMON

sound/soc/sof/intel/Makefile

@@ -6,7 +6,7 @@ snd-sof-acpi-intel-bdw-objs := bdw.o
 snd-sof-intel-hda-common-objs := hda.o hda-loader.o hda-stream.o hda-trace.o \
 				 hda-dsp.o hda-ipc.o hda-ctrl.o hda-pcm.o \
 				 hda-dai.o hda-bus.o \
-				 apl.o cnl.o tgl.o icl.o hda-common-ops.o
+				 apl.o cnl.o tgl.o icl.o mtl.o hda-common-ops.o
 snd-sof-intel-hda-common-$(CONFIG_SND_SOC_SOF_HDA_PROBES) += hda-probes.o
 
 snd-sof-intel-hda-objs := hda-codec.o
@@ -24,9 +24,11 @@ snd-sof-pci-intel-apl-objs := pci-apl.o
 snd-sof-pci-intel-cnl-objs := pci-cnl.o
 snd-sof-pci-intel-icl-objs := pci-icl.o
 snd-sof-pci-intel-tgl-objs := pci-tgl.o
+snd-sof-pci-intel-mtl-objs := pci-mtl.o
 
 obj-$(CONFIG_SND_SOC_SOF_MERRIFIELD) += snd-sof-pci-intel-tng.o
 obj-$(CONFIG_SND_SOC_SOF_INTEL_APL) += snd-sof-pci-intel-apl.o
 obj-$(CONFIG_SND_SOC_SOF_INTEL_CNL) += snd-sof-pci-intel-cnl.o
 obj-$(CONFIG_SND_SOC_SOF_INTEL_ICL) += snd-sof-pci-intel-icl.o
 obj-$(CONFIG_SND_SOC_SOF_INTEL_TGL) += snd-sof-pci-intel-tgl.o
+obj-$(CONFIG_SND_SOC_SOF_INTEL_MTL) += snd-sof-pci-intel-mtl.o

sound/soc/sof/intel/hda.h

@@ -714,6 +714,8 @@ extern struct snd_sof_dsp_ops sof_tgl_ops;
 int sof_tgl_ops_init(struct snd_sof_dev *sdev);
 extern struct snd_sof_dsp_ops sof_icl_ops;
 int sof_icl_ops_init(struct snd_sof_dev *sdev);
+extern struct snd_sof_dsp_ops sof_mtl_ops;
+int sof_mtl_ops_init(struct snd_sof_dev *sdev);
 
 extern const struct sof_intel_dsp_desc apl_chip_info;
 extern const struct sof_intel_dsp_desc cnl_chip_info;
@@ -723,6 +725,7 @@ extern const struct sof_intel_dsp_desc tglh_chip_info;
 extern const struct sof_intel_dsp_desc ehl_chip_info;
 extern const struct sof_intel_dsp_desc jsl_chip_info;
 extern const struct sof_intel_dsp_desc adls_chip_info;
+extern const struct sof_intel_dsp_desc mtl_chip_info;
 
 /* Probes support */
 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_PROBES)

sound/soc/sof/intel/mtl.c

@@ -0,0 +1,800 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
+//
+// Copyright(c) 2022 Intel Corporation. All rights reserved.
+//
+// Authors: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
+//
+
+/*
+ * Hardware interface for audio DSP on Meteorlake.
+ */
+
+#include <linux/firmware.h>
+#include <sound/sof/ipc4/header.h>
+#include "../ipc4-priv.h"
+#include "../ops.h"
+#include "hda.h"
+#include "hda-ipc.h"
+#include "../sof-audio.h"
+#include "mtl.h"
+
+static const struct snd_sof_debugfs_map mtl_dsp_debugfs[] = {
+	{"hda", HDA_DSP_HDA_BAR, 0, 0x4000, SOF_DEBUGFS_ACCESS_ALWAYS},
+	{"pp", HDA_DSP_PP_BAR,  0, 0x1000, SOF_DEBUGFS_ACCESS_ALWAYS},
+	{"dsp", HDA_DSP_BAR,  0, 0x10000, SOF_DEBUGFS_ACCESS_ALWAYS},
+};
+
+static void mtl_ipc_host_done(struct snd_sof_dev *sdev)
+{
+	/*
+	 * clear busy interrupt to tell dsp controller this interrupt has been accepted,
+	 * not trigger it again
+	 */
+	snd_sof_dsp_update_bits_forced(sdev, HDA_DSP_BAR, MTL_DSP_REG_HFIPCXTDR,
+				       MTL_DSP_REG_HFIPCXTDR_BUSY, MTL_DSP_REG_HFIPCXTDR_BUSY);
+	/*
+	 * clear busy bit to ack dsp the msg has been processed and send reply msg to dsp
+	 */
+	snd_sof_dsp_update_bits_forced(sdev, HDA_DSP_BAR, MTL_DSP_REG_HFIPCXTDA,
+				       MTL_DSP_REG_HFIPCXTDA_BUSY, 0);
+}
+
+static void mtl_ipc_dsp_done(struct snd_sof_dev *sdev)
+{
+	/*
+	 * set DONE bit - tell DSP we have received the reply msg from DSP, and processed it,
+	 * don't send more reply to host
+	 */
+	snd_sof_dsp_update_bits_forced(sdev, HDA_DSP_BAR, MTL_DSP_REG_HFIPCXIDA,
+				       MTL_DSP_REG_HFIPCXIDA_DONE, MTL_DSP_REG_HFIPCXIDA_DONE);
+
+	/* unmask Done interrupt */
+	snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, MTL_DSP_REG_HFIPCXCTL,
+				MTL_DSP_REG_HFIPCXCTL_DONE, MTL_DSP_REG_HFIPCXCTL_DONE);
+}
+
+/* Check if an IPC IRQ occurred */
+static bool mtl_dsp_check_ipc_irq(struct snd_sof_dev *sdev)
+{
+	u32 irq_status;
+	u32 hfintipptr;
+
+	/* read Interrupt IP Pointer */
+	hfintipptr = snd_sof_dsp_read(sdev, HDA_DSP_BAR, MTL_HFINTIPPTR) & MTL_HFINTIPPTR_PTR_MASK;
+	irq_status = snd_sof_dsp_read(sdev, HDA_DSP_BAR, hfintipptr + MTL_DSP_IRQSTS);
+
+	dev_vdbg(sdev->dev, "irq handler: irq_status:0x%x\n", irq_status);
+
+	if (irq_status != U32_MAX && (irq_status & MTL_DSP_IRQSTS_IPC))
+		return true;
+
+	return false;
+}
+
+/* Check if an SDW IRQ occurred */
+static bool mtl_dsp_check_sdw_irq(struct snd_sof_dev *sdev)
+{
+	u32 irq_status;
+	u32 hfintipptr;
+
+	/* read Interrupt IP Pointer */
+	hfintipptr = snd_sof_dsp_read(sdev, HDA_DSP_BAR, MTL_HFINTIPPTR) & MTL_HFINTIPPTR_PTR_MASK;
+	irq_status = snd_sof_dsp_read(sdev, HDA_DSP_BAR, hfintipptr + MTL_DSP_IRQSTS);
+
+	if (irq_status != U32_MAX && (irq_status & MTL_DSP_IRQSTS_SDW))
+		return true;
+
+	return false;
+}
+
+static int mtl_ipc_send_msg(struct snd_sof_dev *sdev, struct snd_sof_ipc_msg *msg)
+{
+	struct sof_ipc4_msg *msg_data = msg->msg_data;
+
+	/* send the message via mailbox */
+	if (msg_data->data_size)
+		sof_mailbox_write(sdev, sdev->host_box.offset, msg_data->data_ptr,
+				  msg_data->data_size);
+
+	snd_sof_dsp_write(sdev, HDA_DSP_BAR, MTL_DSP_REG_HFIPCXIDDY,
+			  msg_data->extension);
+	snd_sof_dsp_write(sdev, HDA_DSP_BAR, MTL_DSP_REG_HFIPCXIDR,
+			  msg_data->primary | MTL_DSP_REG_HFIPCXIDR_BUSY);
+
+	return 0;
+}
+
+static void mtl_enable_ipc_interrupts(struct snd_sof_dev *sdev)
+{
+	struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
+	const struct sof_intel_dsp_desc *chip = hda->desc;
+
+	/* enable IPC DONE and BUSY interrupts */
+	snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, chip->ipc_ctl,
+				MTL_DSP_REG_HFIPCXCTL_BUSY | MTL_DSP_REG_HFIPCXCTL_DONE,
+				MTL_DSP_REG_HFIPCXCTL_BUSY | MTL_DSP_REG_HFIPCXCTL_DONE);
+}
+
+static void mtl_disable_ipc_interrupts(struct snd_sof_dev *sdev)
+{
+	struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
+	const struct sof_intel_dsp_desc *chip = hda->desc;
+
+	/* disable IPC DONE and BUSY interrupts */
+	snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, chip->ipc_ctl,
+				MTL_DSP_REG_HFIPCXCTL_BUSY | MTL_DSP_REG_HFIPCXCTL_DONE, 0);
+}
+
+static int mtl_enable_interrupts(struct snd_sof_dev *sdev)
+{
+	u32 hfintipptr;
+	u32 irqinten;
+	u32 host_ipc;
+	u32 hipcie;
+	int ret;
+
+	/* read Interrupt IP Pointer */
+	hfintipptr = snd_sof_dsp_read(sdev, HDA_DSP_BAR, MTL_HFINTIPPTR) & MTL_HFINTIPPTR_PTR_MASK;
+
+	/* Enable Host IPC and SOUNDWIRE */
+	snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, hfintipptr,
+				MTL_IRQ_INTEN_L_HOST_IPC_MASK | MTL_IRQ_INTEN_L_SOUNDWIRE_MASK,
+				MTL_IRQ_INTEN_L_HOST_IPC_MASK | MTL_IRQ_INTEN_L_SOUNDWIRE_MASK);
+
+	/* check if operation was successful */
+	host_ipc = MTL_IRQ_INTEN_L_HOST_IPC_MASK | MTL_IRQ_INTEN_L_SOUNDWIRE_MASK;
+	irqinten = snd_sof_dsp_read(sdev, HDA_DSP_BAR, hfintipptr);
+	ret = snd_sof_dsp_read_poll_timeout(sdev, HDA_DSP_BAR, hfintipptr, irqinten,
+					    (irqinten & host_ipc) == host_ipc,
+					    HDA_DSP_REG_POLL_INTERVAL_US, HDA_DSP_RESET_TIMEOUT_US);
+	if (ret < 0) {
+		dev_err(sdev->dev, "failed to enable Host IPC and/or SOUNDWIRE\n");
+		return ret;
+	}
+
+	/* Set Host IPC interrupt enable */
+	snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, MTL_DSP_REG_HfHIPCIE,
+				MTL_DSP_REG_HfHIPCIE_IE_MASK, MTL_DSP_REG_HfHIPCIE_IE_MASK);
+
+	/* check if operation was successful */
+	host_ipc = MTL_DSP_REG_HfHIPCIE_IE_MASK;
+	hipcie = snd_sof_dsp_read(sdev, HDA_DSP_BAR, MTL_DSP_REG_HfHIPCIE);
+	ret = snd_sof_dsp_read_poll_timeout(sdev, HDA_DSP_BAR, MTL_DSP_REG_HfHIPCIE, hipcie,
+					    (hipcie & host_ipc) == host_ipc,
+					    HDA_DSP_REG_POLL_INTERVAL_US, HDA_DSP_RESET_TIMEOUT_US);
+	if (ret < 0) {
+		dev_err(sdev->dev, "failed to set Host IPC interrupt enable\n");
+		return ret;
+	}
+
+	snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, MTL_DSP_REG_HfSNDWIE,
+				MTL_DSP_REG_HfSNDWIE_IE_MASK, MTL_DSP_REG_HfSNDWIE_IE_MASK);
+	host_ipc = MTL_DSP_REG_HfSNDWIE_IE_MASK;
+	hipcie = snd_sof_dsp_read(sdev, HDA_DSP_BAR, MTL_DSP_REG_HfSNDWIE);
+	ret = snd_sof_dsp_read_poll_timeout(sdev, HDA_DSP_BAR, MTL_DSP_REG_HfSNDWIE, hipcie,
+					    (hipcie & host_ipc) == host_ipc,
+					    HDA_DSP_REG_POLL_INTERVAL_US, HDA_DSP_RESET_TIMEOUT_US);
+	if (ret < 0)
+		dev_err(sdev->dev, "failed to set SoundWire IPC interrupt enable\n");
+
+	return ret;
+}
+
+static int mtl_disable_interrupts(struct snd_sof_dev *sdev)
+{
+	u32 hfintipptr;
+	u32 irqinten;
+	u32 host_ipc;
+	u32 hipcie;
+	int ret1;
+	int ret;
+
+	/* read Interrupt IP Pointer */
+	hfintipptr = snd_sof_dsp_read(sdev, HDA_DSP_BAR, MTL_HFINTIPPTR) & MTL_HFINTIPPTR_PTR_MASK;
+
+	/* Disable Host IPC and SOUNDWIRE */
+	snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, hfintipptr,
+				MTL_IRQ_INTEN_L_HOST_IPC_MASK | MTL_IRQ_INTEN_L_SOUNDWIRE_MASK, 0);
+
+	/* check if operation was successful */
+	host_ipc = MTL_IRQ_INTEN_L_HOST_IPC_MASK | MTL_IRQ_INTEN_L_SOUNDWIRE_MASK;
+	irqinten = snd_sof_dsp_read(sdev, HDA_DSP_BAR, hfintipptr);
+	ret = snd_sof_dsp_read_poll_timeout(sdev, HDA_DSP_BAR, hfintipptr, irqinten,
+					    (irqinten & host_ipc) == 0,
+					    HDA_DSP_REG_POLL_INTERVAL_US, HDA_DSP_RESET_TIMEOUT_US);
+	/* Continue to disable other interrupts when error happens */
+	if (ret < 0)
+		dev_err(sdev->dev, "failed to disable Host IPC and SoundWire\n");
+
+	/* Set Host IPC interrupt disable */
+	snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, MTL_DSP_REG_HfHIPCIE,
+				MTL_DSP_REG_HfHIPCIE_IE_MASK, 0);
+
+	/* check if operation was successful */
+	host_ipc = MTL_DSP_REG_HfHIPCIE_IE_MASK;
+	hipcie = snd_sof_dsp_read(sdev, HDA_DSP_BAR, MTL_DSP_REG_HfHIPCIE);
+	ret1 = snd_sof_dsp_read_poll_timeout(sdev, HDA_DSP_BAR, MTL_DSP_REG_HfHIPCIE, hipcie,
+					     (hipcie & host_ipc) == 0,
+					     HDA_DSP_REG_POLL_INTERVAL_US,
+					     HDA_DSP_RESET_TIMEOUT_US);
+	if (ret1 < 0) {
+		dev_err(sdev->dev, "failed to set Host IPC interrupt disable\n");
+		if (!ret)
+			ret = ret1;
+	}
+
+	/* Set SoundWire IPC interrupt disable */
+	snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, MTL_DSP_REG_HfSNDWIE,
+				MTL_DSP_REG_HfSNDWIE_IE_MASK, 0);
+	host_ipc = MTL_DSP_REG_HfSNDWIE_IE_MASK;
+	hipcie = snd_sof_dsp_read(sdev, HDA_DSP_BAR, MTL_DSP_REG_HfSNDWIE);
+	ret1 = snd_sof_dsp_read_poll_timeout(sdev, HDA_DSP_BAR, MTL_DSP_REG_HfSNDWIE, hipcie,
+					     (hipcie & host_ipc) == 0,
+					     HDA_DSP_REG_POLL_INTERVAL_US,
+					     HDA_DSP_RESET_TIMEOUT_US);
+	if (ret1 < 0) {
+		dev_err(sdev->dev, "failed to set SoundWire IPC interrupt disable\n");
+		if (!ret)
+			ret = ret1;
+	}
+
+	return ret;
+}
+
+/* pre fw run operations */
+static int mtl_dsp_pre_fw_run(struct snd_sof_dev *sdev)
+{
+	u32 dsphfpwrsts;
+	u32 dsphfdsscs;
+	u32 cpa;
+	u32 pgs;
+	int ret;
+
+	/* Set the DSP subsystem power on */
+	snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, MTL_HFDSSCS,
+				MTL_HFDSSCS_SPA_MASK, MTL_HFDSSCS_SPA_MASK);
+
+	/* Wait for unstable CPA read (1 then 0 then 1) just after setting SPA bit */
+	usleep_range(1000, 1010);
+
+	/* poll with timeout to check if operation successful */
+	cpa = MTL_HFDSSCS_CPA_MASK;
+	dsphfdsscs = snd_sof_dsp_read(sdev, HDA_DSP_BAR, MTL_HFDSSCS);
+	ret = snd_sof_dsp_read_poll_timeout(sdev, HDA_DSP_BAR, MTL_HFDSSCS, dsphfdsscs,
+					    (dsphfdsscs & cpa) == cpa, HDA_DSP_REG_POLL_INTERVAL_US,
+					    HDA_DSP_RESET_TIMEOUT_US);
+	if (ret < 0) {
+		dev_err(sdev->dev, "failed to enable DSP subsystem\n");
+		return ret;
+	}
+
+	/* Power up gated-DSP-0 domain in order to access the DSP shim register block. */
+	snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, MTL_HFPWRCTL,
+				MTL_HFPWRCTL_WPDSPHPXPG, MTL_HFPWRCTL_WPDSPHPXPG);
+
+	usleep_range(1000, 1010);
+
+	/* poll with timeout to check if operation successful */
+	pgs = MTL_HFPWRSTS_DSPHPXPGS_MASK;
+	dsphfpwrsts = snd_sof_dsp_read(sdev, HDA_DSP_BAR, MTL_HFPWRSTS);
+	ret = snd_sof_dsp_read_poll_timeout(sdev, HDA_DSP_BAR, MTL_HFPWRSTS, dsphfpwrsts,
+					    (dsphfpwrsts & pgs) == pgs,
+					    HDA_DSP_REG_POLL_INTERVAL_US,
+					    HDA_DSP_RESET_TIMEOUT_US);
+	if (ret < 0)
+		dev_err(sdev->dev, "failed to power up gated DSP domain\n");
+
+	/* make sure SoundWire is not power-gated */
+	snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, MTL_HFPWRCTL,
+				MTL_HfPWRCTL_WPIOXPG(1), MTL_HfPWRCTL_WPIOXPG(1));
+	return ret;
+}
+
+static int mtl_dsp_post_fw_run(struct snd_sof_dev *sdev)
+{
+	int ret;
+
+	if (sdev->first_boot) {
+		struct sof_intel_hda_dev *hdev = sdev->pdata->hw_pdata;
+
+		ret = hda_sdw_startup(sdev);
+		if (ret < 0) {
+			dev_err(sdev->dev, "could not startup SoundWire links\n");
+			return ret;
+		}
+
+		/* Check if IMR boot is usable */
+		if (!sof_debug_check_flag(SOF_DBG_IGNORE_D3_PERSISTENT))
+			hdev->imrboot_supported = true;
+	}
+
+	hda_sdw_int_enable(sdev, true);
+	return 0;
+}
+
+static void mtl_dsp_dump(struct snd_sof_dev *sdev, u32 flags)
+{
+	char *level = (flags & SOF_DBG_DUMP_OPTIONAL) ? KERN_DEBUG : KERN_ERR;
+	u32 romdbgsts;
+	u32 romdbgerr;
+	u32 fwsts;
+	u32 fwlec;
+
+	fwsts = snd_sof_dsp_read(sdev, HDA_DSP_BAR, MTL_DSP_ROM_STS);
+	fwlec = snd_sof_dsp_read(sdev, HDA_DSP_BAR, MTL_DSP_ROM_ERROR);
+	romdbgsts = snd_sof_dsp_read(sdev, HDA_DSP_BAR, MTL_DSP_REG_HFFLGPXQWY);
+	romdbgerr = snd_sof_dsp_read(sdev, HDA_DSP_BAR, MTL_DSP_REG_HFFLGPXQWY_ERROR);
+
+	dev_err(sdev->dev, "ROM status: %#x, ROM error: %#x\n", fwsts, fwlec);
+	dev_err(sdev->dev, "ROM debug status: %#x, ROM debug error: %#x\n", romdbgsts,
+		romdbgerr);
+	romdbgsts = snd_sof_dsp_read(sdev, HDA_DSP_BAR, MTL_DSP_REG_HFFLGPXQWY + 0x8 * 3);
+	dev_printk(level, sdev->dev, "ROM feature bit%s enabled\n",
+		   romdbgsts & BIT(24) ? "" : " not");
+}
+
+static bool mtl_dsp_primary_core_is_enabled(struct snd_sof_dev *sdev)
+{
+	int val;
+
+	val = snd_sof_dsp_read(sdev, HDA_DSP_BAR, MTL_DSP2CXCTL_PRIMARY_CORE);
+	if (val != U32_MAX && val & MTL_DSP2CXCTL_PRIMARY_CORE_CPA_MASK)
+		return true;
+
+	return false;
+}
+
+static int mtl_dsp_core_power_up(struct snd_sof_dev *sdev, int core)
+{
+	unsigned int cpa;
+	u32 dspcxctl;
+	int ret;
+
+	/* Only the primary core can be powered up by the host */
+	if (core != SOF_DSP_PRIMARY_CORE || mtl_dsp_primary_core_is_enabled(sdev))
+		return 0;
+
+	/* Program the owner of the IP & shim registers (10: Host CPU) */
+	snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, MTL_DSP2CXCTL_PRIMARY_CORE,
+				MTL_DSP2CXCTL_PRIMARY_CORE_OSEL,
+				0x2 << MTL_DSP2CXCTL_PRIMARY_CORE_OSEL_SHIFT);
+
+	/* enable SPA bit */
+	snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, MTL_DSP2CXCTL_PRIMARY_CORE,
+				MTL_DSP2CXCTL_PRIMARY_CORE_SPA_MASK,
+				MTL_DSP2CXCTL_PRIMARY_CORE_SPA_MASK);
+
+	/* Wait for unstable CPA read (1 then 0 then 1) just after setting SPA bit */
+	usleep_range(1000, 1010);
+
+	/* poll with timeout to check if operation successful */
+	cpa = MTL_DSP2CXCTL_PRIMARY_CORE_CPA_MASK;
+	ret = snd_sof_dsp_read_poll_timeout(sdev, HDA_DSP_BAR, MTL_DSP2CXCTL_PRIMARY_CORE, dspcxctl,
+					    (dspcxctl & cpa) == cpa, HDA_DSP_REG_POLL_INTERVAL_US,
+					    HDA_DSP_RESET_TIMEOUT_US);
+	if (ret < 0) {
+		dev_err(sdev->dev, "%s: timeout on MTL_DSP2CXCTL_PRIMARY_CORE read\n",
+			__func__);
+		return ret;
+	}
+
+	/* did core power up ? */
+	dspcxctl = snd_sof_dsp_read(sdev, HDA_DSP_BAR, MTL_DSP2CXCTL_PRIMARY_CORE);
+	if ((dspcxctl & MTL_DSP2CXCTL_PRIMARY_CORE_CPA_MASK)
+		!= MTL_DSP2CXCTL_PRIMARY_CORE_CPA_MASK) {
+		dev_err(sdev->dev, "power up core failed core %d adspcs %#x\n",
+			core, dspcxctl);
+		ret = -EIO;
+	}
+
+	return ret;
+}
+
+static int mtl_dsp_core_power_down(struct snd_sof_dev *sdev, int core)
+{
+	u32 dspcxctl;
+	int ret;
+
+	/* Only the primary core can be powered down by the host */
+	if (core != SOF_DSP_PRIMARY_CORE || !mtl_dsp_primary_core_is_enabled(sdev))
+		return 0;
+
+	/* disable SPA bit */
+	snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, MTL_DSP2CXCTL_PRIMARY_CORE,
+				MTL_DSP2CXCTL_PRIMARY_CORE_SPA_MASK, 0);
+
+	/* Wait for unstable CPA read (1 then 0 then 1) just after setting SPA bit */
+	usleep_range(1000, 1010);
+
+	ret = snd_sof_dsp_read_poll_timeout(sdev, HDA_DSP_BAR, MTL_DSP2CXCTL_PRIMARY_CORE, dspcxctl,
+					    !(dspcxctl & MTL_DSP2CXCTL_PRIMARY_CORE_CPA_MASK),
+					    HDA_DSP_REG_POLL_INTERVAL_US,
+					    HDA_DSP_PD_TIMEOUT * USEC_PER_MSEC);
+	if (ret < 0)
+		dev_err(sdev->dev, "failed to power down primary core\n");
+
+	return ret;
+}
+
+static int mtl_dsp_cl_init(struct snd_sof_dev *sdev, int stream_tag, bool imr_boot)
+{
+	struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
+	const struct sof_intel_dsp_desc *chip = hda->desc;
+	unsigned int status;
+	u32 ipc_hdr;
+	int ret;
+
+	/* step 1: purge FW request */
+	ipc_hdr = chip->ipc_req_mask | HDA_DSP_ROM_IPC_CONTROL;
+	if (!imr_boot)
+		ipc_hdr |= HDA_DSP_ROM_IPC_PURGE_FW | ((stream_tag - 1) << 9);
+
+	snd_sof_dsp_write(sdev, HDA_DSP_BAR, chip->ipc_req, ipc_hdr);
+
+	/* step 2: power up primary core */
+	ret = mtl_dsp_core_power_up(sdev, SOF_DSP_PRIMARY_CORE);
+	if (ret < 0) {
+		if (hda->boot_iteration == HDA_FW_BOOT_ATTEMPTS)
+			dev_err(sdev->dev, "dsp core 0/1 power up failed\n");
+		goto err;
+	}
+
+	dev_dbg(sdev->dev, "Primary core power up successful\n");
+
+	/* step 3: wait for IPC DONE bit from ROM */
+	ret = snd_sof_dsp_read_poll_timeout(sdev, HDA_DSP_BAR, chip->ipc_ack, status,
+					    ((status & chip->ipc_ack_mask) == chip->ipc_ack_mask),
+					    HDA_DSP_REG_POLL_INTERVAL_US, MTL_DSP_PURGE_TIMEOUT_US);
+	if (ret < 0) {
+		if (hda->boot_iteration == HDA_FW_BOOT_ATTEMPTS)
+			dev_err(sdev->dev, "timeout waiting for purge IPC done\n");
+		goto err;
+	}
+
+	/* set DONE bit to clear the reply IPC message */
+	snd_sof_dsp_update_bits_forced(sdev, HDA_DSP_BAR, chip->ipc_ack, chip->ipc_ack_mask,
+				       chip->ipc_ack_mask);
+
+	/* step 4: enable interrupts */
+	ret = mtl_enable_interrupts(sdev);
+	if (ret < 0) {
+		if (hda->boot_iteration == HDA_FW_BOOT_ATTEMPTS)
+			dev_err(sdev->dev, "%s: failed to enable interrupts\n", __func__);
+		goto err;
+	}
+
+	mtl_enable_ipc_interrupts(sdev);
+
+	/*
+	 * ACE workaround: don't wait for ROM INIT.
+	 * The platform cannot catch ROM_INIT_DONE because of a very short
+	 * timing window. Follow the recommendations and skip this part.
+	 */
+
+	return 0;
+
+err:
+	snd_sof_dsp_dbg_dump(sdev, "MTL DSP init fail", 0);
+	mtl_dsp_core_power_down(sdev, SOF_DSP_PRIMARY_CORE);
+	return ret;
+}
+
+static irqreturn_t mtl_ipc_irq_thread(int irq, void *context)
+{
+	struct sof_ipc4_msg notification_data = {{ 0 }};
+	struct snd_sof_dev *sdev = context;
+	bool ipc_irq = false;
+	u32 hipcida;
+	u32 hipctdr;
+
+	hipcida = snd_sof_dsp_read(sdev, HDA_DSP_BAR, MTL_DSP_REG_HFIPCXIDA);
+
+	/* reply message from DSP */
+	if (hipcida & MTL_DSP_REG_HFIPCXIDA_DONE) {
+		/* DSP received the message */
+		snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, MTL_DSP_REG_HFIPCXCTL,
+					MTL_DSP_REG_HFIPCXCTL_DONE, 0);
+
+		mtl_ipc_dsp_done(sdev);
+
+		ipc_irq = true;
+	}
+
+	hipctdr = snd_sof_dsp_read(sdev, HDA_DSP_BAR, MTL_DSP_REG_HFIPCXTDR);
+	if (hipctdr & MTL_DSP_REG_HFIPCXTDR_BUSY) {
+		/* Message from DSP (reply or notification) */
+		u32 extension = snd_sof_dsp_read(sdev, HDA_DSP_BAR, MTL_DSP_REG_HFIPCXTDDY);
+		u32 primary = hipctdr & MTL_DSP_REG_HFIPCXTDR_MSG_MASK;
+
+		/*
+		 * ACE fw sends a new fw ipc message to host to
+		 * notify the status of the last host ipc message
+		 */
+		if (primary & SOF_IPC4_MSG_DIR_MASK) {
+			/* Reply received */
+			struct sof_ipc4_msg *data = sdev->ipc->msg.reply_data;
+
+			data->primary = primary;
+			data->extension = extension;
+
+			spin_lock_irq(&sdev->ipc_lock);
+
+			snd_sof_ipc_get_reply(sdev);
+			snd_sof_ipc_reply(sdev, data->primary);
+
+			spin_unlock_irq(&sdev->ipc_lock);
+		} else {
+			/* Notification received */
+			notification_data.primary = primary;
+			notification_data.extension = extension;
+
+			sdev->ipc->msg.rx_data = &notification_data;
+			snd_sof_ipc_msgs_rx(sdev);
+			sdev->ipc->msg.rx_data = NULL;
+		}
+
+		mtl_ipc_host_done(sdev);
+
+		ipc_irq = true;
+	}
+
+	if (!ipc_irq) {
+		/* This interrupt is not shared so no need to return IRQ_NONE. */
+		dev_dbg_ratelimited(sdev->dev, "%s nothing to do in IPC IRQ thread\n",
+				    __func__);
+	}
+
+	return IRQ_HANDLED;
+}
+
+static int mtl_dsp_ipc_get_mailbox_offset(struct snd_sof_dev *sdev)
+{
+	return MTL_DSP_MBOX_UPLINK_OFFSET;
+}
+
+static int mtl_dsp_ipc_get_window_offset(struct snd_sof_dev *sdev, u32 id)
+{
+	return MTL_SRAM_WINDOW_OFFSET(id);
+}
+
+static int mtl_suspend(struct snd_sof_dev *sdev, bool runtime_suspend)
+{
+	struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
+	const struct sof_intel_dsp_desc *chip = hda->desc;
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
+	struct hdac_bus *bus = sof_to_bus(sdev);
+#endif
+	u32 dsphfdsscs;
+	u32 cpa;
+	int ret;
+	int i;
+
+	mtl_disable_ipc_interrupts(sdev);
+	ret = mtl_disable_interrupts(sdev);
+	if (ret)
+		return ret;
+
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
+	hda_codec_jack_wake_enable(sdev, runtime_suspend);
+	/* power down all hda link */
+	snd_hdac_ext_bus_link_power_down_all(bus);
+#endif
+	snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, MTL_HFPWRCTL,
+				MTL_HFPWRCTL_WPDSPHPXPG, 0);
+
+	/* Set the DSP subsystem power down */
+	snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, MTL_HFDSSCS,
+				MTL_HFDSSCS_SPA_MASK, 0);
+
+	/* Wait for unstable CPA read (1 then 0 then 1) just after setting SPA bit */
+	usleep_range(1000, 1010);
+
+	/* poll with timeout to check if operation successful */
+	cpa = MTL_HFDSSCS_CPA_MASK;
+	dsphfdsscs = snd_sof_dsp_read(sdev, HDA_DSP_BAR, MTL_HFDSSCS);
+	ret = snd_sof_dsp_read_poll_timeout(sdev, HDA_DSP_BAR, MTL_HFDSSCS, dsphfdsscs,
+					    (dsphfdsscs & cpa) == 0, HDA_DSP_REG_POLL_INTERVAL_US,
+					HDA_DSP_RESET_TIMEOUT_US);
+	if (ret < 0)
+		dev_err(sdev->dev, "failed to disable DSP subsystem\n");
+
+	/* reset ref counts for all cores */
+	for (i = 0; i < chip->cores_num; i++)
+		sdev->dsp_core_ref_count[i] = 0;
+
+	/* TODO: need to reset controller? */
+
+	/* display codec can be powered off after link reset */
+	hda_codec_i915_display_power(sdev, false);
+
+	return 0;
+}
+
+static int mtl_dsp_suspend(struct snd_sof_dev *sdev, u32 target_state)
+{
+	const struct sof_dsp_power_state target_dsp_state = {
+		.state = target_state,
+		.substate = target_state == SOF_DSP_PM_D0 ?
+				SOF_HDA_DSP_PM_D0I3 : 0,
+	};
+	int ret;
+
+	ret = mtl_suspend(sdev, false);
+	if (ret < 0)
+		return ret;
+
+	return snd_sof_dsp_set_power_state(sdev, &target_dsp_state);
+}
+
+static int mtl_dsp_runtime_suspend(struct snd_sof_dev *sdev)
+{
+	const struct sof_dsp_power_state target_state = {
+		.state = SOF_DSP_PM_D3,
+	};
+	int ret;
+
+	ret = mtl_suspend(sdev, true);
+	if (ret < 0)
+		return ret;
+
+	return snd_sof_dsp_set_power_state(sdev, &target_state);
+}
+
+static int mtl_resume(struct snd_sof_dev *sdev, bool runtime_resume)
+{
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
+	struct hdac_bus *bus = sof_to_bus(sdev);
+	struct hdac_ext_link *hlink = NULL;
+#endif
+
+	/* display codec must be powered before link reset */
+	hda_codec_i915_display_power(sdev, true);
+
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
+	/* check jack status */
+	if (runtime_resume) {
+		hda_codec_jack_wake_enable(sdev, false);
+		if (sdev->system_suspend_target == SOF_SUSPEND_NONE)
+			hda_codec_jack_check(sdev);
+	}
+
+	/* turn off the links that were off before suspend */
+	list_for_each_entry(hlink, &bus->hlink_list, list) {
+		if (!hlink->ref_count)
+			snd_hdac_ext_bus_link_power_down(hlink);
+	}
+
+	/* check dma status and clean up CORB/RIRB buffers */
+	if (!bus->cmd_dma_state)
+		snd_hdac_bus_stop_cmd_io(bus);
+#endif
+
+	return 0;
+}
+
+static int mtl_dsp_resume(struct snd_sof_dev *sdev)
+{
+	const struct sof_dsp_power_state target_state = {
+		.state = SOF_DSP_PM_D0,
+		.substate = SOF_HDA_DSP_PM_D0I0,
+	};
+	int ret;
+
+	ret = mtl_resume(sdev, false);
+	if (ret < 0)
+		return ret;
+
+	return snd_sof_dsp_set_power_state(sdev, &target_state);
+}
+
+static int mtl_dsp_runtime_resume(struct snd_sof_dev *sdev)
+{
+	const struct sof_dsp_power_state target_state = {
+		.state = SOF_DSP_PM_D0,
+	};
+	int ret;
+
+	ret = mtl_resume(sdev, true);
+	if (ret < 0)
+		return ret;
+
+	return snd_sof_dsp_set_power_state(sdev, &target_state);
+}
+
+static void mtl_ipc_dump(struct snd_sof_dev *sdev)
+{
+	u32 hipcctl;
+	u32 hipcida;
+	u32 hipctdr;
+
+	/* read IPC status */
+	hipcida = snd_sof_dsp_read(sdev, HDA_DSP_BAR, MTL_DSP_REG_HFIPCXIDA);
+	hipcctl = snd_sof_dsp_read(sdev, HDA_DSP_BAR, MTL_DSP_REG_HFIPCXCTL);
+	hipctdr = snd_sof_dsp_read(sdev, HDA_DSP_BAR, MTL_DSP_REG_HFIPCXTDR);
+
+	/* dump the IPC regs */
+	/* TODO: parse the raw msg */
+	dev_err(sdev->dev,
+		"error: host status 0x%8.8x dsp status 0x%8.8x mask 0x%8.8x\n",
+		hipcida, hipctdr, hipcctl);
+}
+
+/* Meteorlake ops */
+struct snd_sof_dsp_ops sof_mtl_ops;
+EXPORT_SYMBOL_NS(sof_mtl_ops, SND_SOC_SOF_INTEL_HDA_COMMON);
+
+int sof_mtl_ops_init(struct snd_sof_dev *sdev)
+{
+	struct sof_ipc4_fw_data *ipc4_data;
+
+	/* common defaults */
+	memcpy(&sof_mtl_ops, &sof_hda_common_ops, sizeof(struct snd_sof_dsp_ops));
+
+	/* shutdown */
+	sof_mtl_ops.shutdown = hda_dsp_shutdown;
+
+	/* doorbell */
+	sof_mtl_ops.irq_thread = mtl_ipc_irq_thread;
+
+	/* ipc */
+	sof_mtl_ops.send_msg = mtl_ipc_send_msg;
+	sof_mtl_ops.get_mailbox_offset = mtl_dsp_ipc_get_mailbox_offset;
+	sof_mtl_ops.get_window_offset = mtl_dsp_ipc_get_window_offset;
+
+	/* debug */
+	sof_mtl_ops.debug_map = mtl_dsp_debugfs;
+	sof_mtl_ops.debug_map_count = ARRAY_SIZE(mtl_dsp_debugfs);
+	sof_mtl_ops.dbg_dump = mtl_dsp_dump;
+	sof_mtl_ops.ipc_dump = mtl_ipc_dump;
+
+	/* pre/post fw run */
+	sof_mtl_ops.pre_fw_run = mtl_dsp_pre_fw_run;
+	sof_mtl_ops.post_fw_run = mtl_dsp_post_fw_run;
+
+	/* parse platform specific extended manifest */
+	sof_mtl_ops.parse_platform_ext_manifest = NULL;
+
+	/* dsp core get/put */
+	/* TODO: add core_get and core_put */
+
+	/* PM */
+	sof_mtl_ops.suspend = mtl_dsp_suspend;
+	sof_mtl_ops.resume = mtl_dsp_resume;
+	sof_mtl_ops.runtime_suspend = mtl_dsp_runtime_suspend;
+	sof_mtl_ops.runtime_resume = mtl_dsp_runtime_resume;
+
+	sdev->private = devm_kzalloc(sdev->dev, sizeof(struct sof_ipc4_fw_data), GFP_KERNEL);
+	if (!sdev->private)
+		return -ENOMEM;
+
+	ipc4_data = sdev->private;
+	ipc4_data->manifest_fw_hdr_offset = SOF_MAN4_FW_HDR_OFFSET;
+
+	/* set DAI ops */
+	hda_set_dai_drv_ops(sdev, &sof_mtl_ops);
+
+	return 0;
+};
+EXPORT_SYMBOL_NS(sof_mtl_ops_init, SND_SOC_SOF_INTEL_HDA_COMMON);
+
+const struct sof_intel_dsp_desc mtl_chip_info = {
+	.cores_num = 3,
+	.init_core_mask = BIT(0),
+	.host_managed_cores_mask = BIT(0),
+	.ipc_req = MTL_DSP_REG_HFIPCXIDR,
+	.ipc_req_mask = MTL_DSP_REG_HFIPCXIDR_BUSY,
+	.ipc_ack = MTL_DSP_REG_HFIPCXIDA,
+	.ipc_ack_mask = MTL_DSP_REG_HFIPCXIDA_DONE,
+	.ipc_ctl = MTL_DSP_REG_HFIPCXCTL,
+	.rom_status_reg = MTL_DSP_ROM_STS,
+	.rom_init_timeout	= 300,
+	.ssp_count = ICL_SSP_COUNT,
+	.ssp_base_offset = CNL_SSP_BASE_OFFSET,
+	.sdw_shim_base = SDW_SHIM_BASE_ACE,
+	.sdw_alh_base = SDW_ALH_BASE_ACE,
+	.check_sdw_irq = mtl_dsp_check_sdw_irq,
+	.check_ipc_irq = mtl_dsp_check_ipc_irq,
+	.cl_init = mtl_dsp_cl_init,
+	.hw_ip_version = SOF_INTEL_ACE_1_0,
+};
+EXPORT_SYMBOL_NS(mtl_chip_info, SND_SOC_SOF_INTEL_HDA_COMMON);

sound/soc/sof/intel/mtl.h

@@ -0,0 +1,76 @@
+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * Copyright(c) 2020-2022 Intel Corporation. All rights reserved.
+ */
+
+/* DSP Registers */
+#define MTL_HFDSSCS			0x1000
+#define MTL_HFDSSCS_SPA_MASK		BIT(16)
+#define MTL_HFDSSCS_CPA_MASK		BIT(24)
+#define MTL_HFSNDWIE			0x114C
+#define MTL_HFPWRCTL			0x1D18
+#define MTL_HfPWRCTL_WPIOXPG(x)		BIT((x) + 8)
+#define MTL_HFPWRCTL_WPDSPHPXPG		BIT(0)
+#define MTL_HFPWRSTS			0x1D1C
+#define MTL_HFPWRSTS_DSPHPXPGS_MASK	BIT(0)
+#define MTL_HFINTIPPTR			0x1108
+#define MTL_IRQ_INTEN_L_HOST_IPC_MASK	BIT(0)
+#define MTL_IRQ_INTEN_L_SOUNDWIRE_MASK	BIT(6)
+#define MTL_HFINTIPPTR_PTR_MASK		GENMASK(20, 0)
+
+#define MTL_DSP2CXCAP_PRIMARY_CORE	0x178D00
+#define MTL_DSP2CXCTL_PRIMARY_CORE	0x178D04
+#define MTL_DSP2CXCTL_PRIMARY_CORE_SPA_MASK BIT(0)
+#define MTL_DSP2CXCTL_PRIMARY_CORE_CPA_MASK BIT(8)
+#define MTL_DSP2CXCTL_PRIMARY_CORE_OSEL GENMASK(25, 24)
+#define MTL_DSP2CXCTL_PRIMARY_CORE_OSEL_SHIFT 24
+
+/* IPC Registers */
+#define MTL_DSP_REG_HFIPCXTDR		0x73200
+#define MTL_DSP_REG_HFIPCXTDR_BUSY	BIT(31)
+#define MTL_DSP_REG_HFIPCXTDR_MSG_MASK GENMASK(30, 0)
+#define MTL_DSP_REG_HFIPCXTDA		0x73204
+#define MTL_DSP_REG_HFIPCXTDA_BUSY	BIT(31)
+#define MTL_DSP_REG_HFIPCXIDR		0x73210
+#define MTL_DSP_REG_HFIPCXIDR_BUSY	BIT(31)
+#define MTL_DSP_REG_HFIPCXIDR_MSG_MASK GENMASK(30, 0)
+#define MTL_DSP_REG_HFIPCXIDA		0x73214
+#define MTL_DSP_REG_HFIPCXIDA_DONE	BIT(31)
+#define MTL_DSP_REG_HFIPCXIDA_MSG_MASK GENMASK(30, 0)
+#define MTL_DSP_REG_HFIPCXCTL		0x73228
+#define MTL_DSP_REG_HFIPCXCTL_BUSY	BIT(0)
+#define MTL_DSP_REG_HFIPCXCTL_DONE	BIT(1)
+#define MTL_DSP_REG_HFIPCXTDDY		0x73300
+#define MTL_DSP_REG_HFIPCXIDDY		0x73380
+#define MTL_DSP_REG_HfHIPCIE		0x1140
+#define MTL_DSP_REG_HfHIPCIE_IE_MASK	BIT(0)
+#define MTL_DSP_REG_HfSNDWIE		0x114C
+#define MTL_DSP_REG_HfSNDWIE_IE_MASK	GENMASK(3, 0)
+
+#define MTL_DSP_IRQSTS			0x20
+#define MTL_DSP_IRQSTS_IPC		BIT(0)
+#define MTL_DSP_IRQSTS_SDW		BIT(6)
+
+#define MTL_DSP_PURGE_TIMEOUT_US	20000000 /* 20s */
+#define MTL_DSP_REG_POLL_INTERVAL_US	10	/* 10 us */
+
+/* Memory windows */
+#define MTL_SRAM_WINDOW_OFFSET(x)	(0x180000 + 0x8000 * (x))
+
+#define MTL_DSP_MBOX_UPLINK_OFFSET	(MTL_SRAM_WINDOW_OFFSET(0) + 0x1000)
+#define MTL_DSP_MBOX_UPLINK_SIZE	0x1000
+#define MTL_DSP_MBOX_DOWNLINK_OFFSET	MTL_SRAM_WINDOW_OFFSET(1)
+#define MTL_DSP_MBOX_DOWNLINK_SIZE	0x1000
+
+/* FW registers */
+#define MTL_DSP_ROM_STS			MTL_SRAM_WINDOW_OFFSET(0) /* ROM status */
+#define MTL_DSP_ROM_ERROR		(MTL_SRAM_WINDOW_OFFSET(0) + 0x4) /* ROM error code */
+
+#define MTL_DSP_REG_HFFLGPXQWY		0x163200 /* ROM debug status */
+#define MTL_DSP_REG_HFFLGPXQWY_ERROR	0x163204 /* ROM debug error code */
+#define MTL_DSP_REG_HfIMRIS1		0x162088
+#define MTL_DSP_REG_HfIMRIS1_IU_MASK	BIT(0)
+

sound/soc/sof/intel/pci-mtl.c

@@ -0,0 +1,71 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
+//
+// This file is provided under a dual BSD/GPLv2 license.  When using or
+// redistributing this file, you may do so under either license.
+//
+// Copyright(c) 2018-2022 Intel Corporation. All rights reserved.
+//
+// Author: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
+//
+
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <sound/soc-acpi.h>
+#include <sound/soc-acpi-intel-match.h>
+#include <sound/sof.h>
+#include "../ops.h"
+#include "../sof-pci-dev.h"
+
+/* platform specific devices */
+#include "hda.h"
+#include "mtl.h"
+
+static const struct sof_dev_desc mtl_desc = {
+	.use_acpi_target_states	= true,
+	.machines               = snd_soc_acpi_intel_mtl_machines,
+	.alt_machines		= snd_soc_acpi_intel_mtl_sdw_machines,
+	.resindex_lpe_base      = 0,
+	.resindex_pcicfg_base   = -1,
+	.resindex_imr_base      = -1,
+	.irqindex_host_ipc      = -1,
+	.chip_info = &mtl_chip_info,
+	.ipc_supported_mask	= BIT(SOF_INTEL_IPC4),
+	.ipc_default		= SOF_INTEL_IPC4,
+	.default_fw_path = {
+		[SOF_INTEL_IPC4] = "intel/sof-ipc4/mtl",
+	},
+	.default_tplg_path = {
+		[SOF_INTEL_IPC4] = "intel/sof-ace-tplg",
+	},
+	.default_fw_filename = {
+		[SOF_INTEL_IPC4] = "dsp_basefw.bin",
+	},
+	.nocodec_tplg_filename = "sof-mtl-nocodec.tplg",
+	.ops = &sof_mtl_ops,
+	.ops_init = sof_mtl_ops_init,
+};
+
+/* PCI IDs */
+static const struct pci_device_id sof_pci_ids[] = {
+	{ PCI_DEVICE(0x8086, 0x7E28), /* MTL */
+		.driver_data = (unsigned long)&mtl_desc},
+	{ 0, }
+};
+MODULE_DEVICE_TABLE(pci, sof_pci_ids);
+
+/* pci_driver definition */
+static struct pci_driver snd_sof_pci_intel_mtl_driver = {
+	.name = "sof-audio-pci-intel-mtl",
+	.id_table = sof_pci_ids,
+	.probe = hda_pci_intel_probe,
+	.remove = sof_pci_remove,
+	.shutdown = sof_pci_shutdown,
+	.driver = {
+		.pm = &sof_pci_pm,
+	},
+};
+module_pci_driver(snd_sof_pci_intel_mtl_driver);
+
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_IMPORT_NS(SND_SOC_SOF_INTEL_HDA_COMMON);
+MODULE_IMPORT_NS(SND_SOC_SOF_PCI_DEV);

sound/soc/sof/intel/shim.h

@@ -20,6 +20,7 @@ enum sof_intel_hw_ip_version {
 	SOF_INTEL_CAVS_1_8,	/* CannonLake, CometLake, CoffeeLake */
 	SOF_INTEL_CAVS_2_0,	/* IceLake, JasperLake */
 	SOF_INTEL_CAVS_2_5,	/* TigerLake, AlderLake */
+	SOF_INTEL_ACE_1_0,	/* MeteorLake */
 };
 
 /*