ASoC: SOF: Intel: Create ptl.c as placeholder for Panther Lake features

Create a minimal placeholder to make it possible to add code to handle
the new features of Panther Lake compared to MTL/LNL.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Liam Girdwood <liam.r.girdwood@intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://patch.msgid.link/20250307112816.1495-5-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sof/intel/Makefile

@@ -34,7 +34,7 @@ snd-sof-pci-intel-icl-y := pci-icl.o icl.o
 snd-sof-pci-intel-tgl-y := pci-tgl.o tgl.o
 snd-sof-pci-intel-mtl-y := pci-mtl.o mtl.o
 snd-sof-pci-intel-lnl-y := pci-lnl.o lnl.o
-snd-sof-pci-intel-ptl-y := pci-ptl.o
+snd-sof-pci-intel-ptl-y := pci-ptl.o ptl.o
 
 obj-$(CONFIG_SND_SOC_SOF_MERRIFIELD) += snd-sof-pci-intel-tng.o
 obj-$(CONFIG_SND_SOC_SOF_INTEL_SKL) += snd-sof-pci-intel-skl.o

sound/soc/sof/intel/lnl.c

@@ -128,20 +128,22 @@ int sof_lnl_set_ops(struct snd_sof_dev *sdev, struct snd_sof_dsp_ops *dsp_ops)
 EXPORT_SYMBOL_NS(sof_lnl_set_ops, "SND_SOC_SOF_INTEL_LNL");
 
 /* Check if an SDW IRQ occurred */
-static bool lnl_dsp_check_sdw_irq(struct snd_sof_dev *sdev)
+bool lnl_dsp_check_sdw_irq(struct snd_sof_dev *sdev)
 {
 	struct hdac_bus *bus = sof_to_bus(sdev);
 
 	return hdac_bus_eml_check_interrupt(bus, true,  AZX_REG_ML_LEPTR_ID_SDW);
 }
+EXPORT_SYMBOL_NS(lnl_dsp_check_sdw_irq, "SND_SOC_SOF_INTEL_LNL");
 
-static int lnl_dsp_disable_interrupts(struct snd_sof_dev *sdev)
+int lnl_dsp_disable_interrupts(struct snd_sof_dev *sdev)
 {
 	mtl_disable_ipc_interrupts(sdev);
 	return mtl_enable_interrupts(sdev, false);
 }
+EXPORT_SYMBOL_NS(lnl_dsp_disable_interrupts, "SND_SOC_SOF_INTEL_LNL");
 
-static bool lnl_sdw_check_wakeen_irq(struct snd_sof_dev *sdev)
+bool lnl_sdw_check_wakeen_irq(struct snd_sof_dev *sdev)
 {
 	struct hdac_bus *bus = sof_to_bus(sdev);
 	u16 wake_sts;
@@ -157,6 +159,7 @@ static bool lnl_sdw_check_wakeen_irq(struct snd_sof_dev *sdev)
 	/* filter out the range of SDIs that can be set for SoundWire */
 	return wake_sts & GENMASK(SDW_MAX_DEVICES, SDW_INTEL_DEV_NUM_IDA_MIN);
 }
+EXPORT_SYMBOL_NS(lnl_sdw_check_wakeen_irq, "SND_SOC_SOF_INTEL_LNL");
 
 const struct sof_intel_dsp_desc lnl_chip_info = {
 	.cores_num = 5,
@@ -182,29 +185,5 @@ const struct sof_intel_dsp_desc lnl_chip_info = {
 	.hw_ip_version = SOF_INTEL_ACE_2_0,
 };
 
-const struct sof_intel_dsp_desc ptl_chip_info = {
-	.cores_num = 5,
-	.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 = LNL_DSP_REG_HFDSC,
-	.rom_init_timeout = 300,
-	.ssp_count = MTL_SSP_COUNT,
-	.d0i3_offset = MTL_HDA_VS_D0I3C,
-	.read_sdw_lcount =  hda_sdw_check_lcount_ext,
-	.check_sdw_irq = lnl_dsp_check_sdw_irq,
-	.check_sdw_wakeen_irq = lnl_sdw_check_wakeen_irq,
-	.check_ipc_irq = mtl_dsp_check_ipc_irq,
-	.cl_init = mtl_dsp_cl_init,
-	.power_down_dsp = mtl_power_down_dsp,
-	.disable_interrupts = lnl_dsp_disable_interrupts,
-	.hw_ip_version = SOF_INTEL_ACE_3_0,
-};
-EXPORT_SYMBOL_NS(ptl_chip_info, "SND_SOC_SOF_INTEL_LNL");
-
 MODULE_IMPORT_NS("SND_SOC_SOF_INTEL_MTL");
 MODULE_IMPORT_NS("SND_SOC_SOF_HDA_MLINK");

sound/soc/sof/intel/lnl.h

@@ -14,4 +14,8 @@
 
 int sof_lnl_set_ops(struct snd_sof_dev *sdev, struct snd_sof_dsp_ops *dsp_ops);
 
+bool lnl_dsp_check_sdw_irq(struct snd_sof_dev *sdev);
+int lnl_dsp_disable_interrupts(struct snd_sof_dev *sdev);
+bool lnl_sdw_check_wakeen_irq(struct snd_sof_dev *sdev);
+
 #endif /* __SOF_INTEL_LNL_H */

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

@@ -16,14 +16,14 @@
 
 /* platform specific devices */
 #include "hda.h"
-#include "lnl.h"
+#include "ptl.h"
 
 /* PantherLake ops */
 static struct snd_sof_dsp_ops sof_ptl_ops;
 
 static int sof_ptl_ops_init(struct snd_sof_dev *sdev)
 {
-	return sof_lnl_set_ops(sdev, &sof_ptl_ops);
+	return sof_ptl_set_ops(sdev, &sof_ptl_ops);
 }
 
 static const struct sof_dev_desc ptl_desc = {
@@ -80,6 +80,4 @@ MODULE_LICENSE("Dual BSD/GPL");
 MODULE_DESCRIPTION("SOF support for PantherLake platforms");
 MODULE_IMPORT_NS("SND_SOC_SOF_INTEL_HDA_GENERIC");
 MODULE_IMPORT_NS("SND_SOC_SOF_INTEL_HDA_COMMON");
-MODULE_IMPORT_NS("SND_SOC_SOF_INTEL_LNL");
-MODULE_IMPORT_NS("SND_SOC_SOF_HDA_MLINK");
 MODULE_IMPORT_NS("SND_SOC_SOF_PCI_DEV");

sound/soc/sof/intel/ptl.c

@@ -0,0 +1,52 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
+//
+// Copyright(c) 2025 Intel Corporation
+
+/*
+ * Hardware interface for audio DSP on PantherLake.
+ */
+
+#include <sound/hda_register.h>
+#include <sound/hda-mlink.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"
+#include "lnl.h"
+#include "ptl.h"
+
+int sof_ptl_set_ops(struct snd_sof_dev *sdev, struct snd_sof_dsp_ops *dsp_ops)
+{
+	return sof_lnl_set_ops(sdev, dsp_ops);
+}
+EXPORT_SYMBOL_NS(sof_ptl_set_ops, "SND_SOC_SOF_INTEL_PTL");
+
+const struct sof_intel_dsp_desc ptl_chip_info = {
+	.cores_num = 5,
+	.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 = LNL_DSP_REG_HFDSC,
+	.rom_init_timeout = 300,
+	.ssp_count = MTL_SSP_COUNT,
+	.d0i3_offset = MTL_HDA_VS_D0I3C,
+	.read_sdw_lcount =  hda_sdw_check_lcount_ext,
+	.check_sdw_irq = lnl_dsp_check_sdw_irq,
+	.check_sdw_wakeen_irq = lnl_sdw_check_wakeen_irq,
+	.check_ipc_irq = mtl_dsp_check_ipc_irq,
+	.cl_init = mtl_dsp_cl_init,
+	.power_down_dsp = mtl_power_down_dsp,
+	.disable_interrupts = lnl_dsp_disable_interrupts,
+	.hw_ip_version = SOF_INTEL_ACE_3_0,
+};
+
+MODULE_IMPORT_NS("SND_SOC_SOF_INTEL_MTL");
+MODULE_IMPORT_NS("SND_SOC_SOF_INTEL_LNL");
+MODULE_IMPORT_NS("SND_SOC_SOF_HDA_MLINK");

sound/soc/sof/intel/ptl.h

@@ -0,0 +1,14 @@
+/* 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) 2025 Intel Corporation
+ */
+
+#ifndef __SOF_INTEL_PTL_H
+#define __SOF_INTEL_PTL_H
+
+int sof_ptl_set_ops(struct snd_sof_dev *sdev, struct snd_sof_dsp_ops *dsp_ops);
+
+#endif /* __SOF_INTEL_PTL_H */