ASoC: skip the endpoint that doesn't present and

Merge series from Bard Liao <yung-chuan.liao@linux.intel.com>:

A codec endpoint may not be used. We could check the present SDCA
functions to know if the endpoint is used or not. Skip the endpoint
which is not used. And load the topology dynamically for each endpoint.
With this feature, we don't need to use the quirk to determine the
existence of the optional codec DAIs.

1 files changed, 135 insertions, 0 deletions

diff --git a/sound/soc/intel/common/sof-function-topology-lib.c b/sound/soc/intel/common/sof-function-topology-lib.c
new file mode 100644
index 000000000000..90fe7aa3df1c
--- /dev/null
+++ b/sound/soc/intel/common/sof-function-topology-lib.c
@@ -0,0 +1,135 @@
+// 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.
+//
+
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/firmware.h>
+#include <sound/soc.h>
+#include <sound/soc-acpi.h>
+#include "sof-function-topology-lib.h"
+
+enum tplg_device_id {
+	TPLG_DEVICE_SDCA_JACK,
+	TPLG_DEVICE_SDCA_AMP,
+	TPLG_DEVICE_SDCA_MIC,
+	TPLG_DEVICE_INTEL_PCH_DMIC,
+	TPLG_DEVICE_HDMI,
+	TPLG_DEVICE_MAX
+};
+
+#define SDCA_DEVICE_MASK (BIT(TPLG_DEVICE_SDCA_JACK) | BIT(TPLG_DEVICE_SDCA_AMP) | \
+			  BIT(TPLG_DEVICE_SDCA_MIC))
+
+#define SOF_INTEL_PLATFORM_NAME_MAX 4
+
+int sof_sdw_get_tplg_files(struct snd_soc_card *card, const struct snd_soc_acpi_mach *mach,
+			   const char *prefix, const char ***tplg_files)
+{
+	struct snd_soc_acpi_mach_params mach_params = mach->mach_params;
+	struct snd_soc_dai_link *dai_link;
+	const struct firmware *fw;
+	char platform[SOF_INTEL_PLATFORM_NAME_MAX];
+	unsigned long tplg_mask = 0;
+	int tplg_num = 0;
+	int tplg_dev;
+	int ret;
+	int i;
+
+	ret = sscanf(mach->sof_tplg_filename, "sof-%3s-*.tplg", platform);
+	if (ret != 1) {
+		dev_err(card->dev, "Invalid platform name %s of tplg %s\n",
+			platform, mach->sof_tplg_filename);
+		return -EINVAL;
+	}
+
+	for_each_card_prelinks(card, i, dai_link) {
+		char *tplg_dev_name;
+
+		dev_dbg(card->dev, "dai_link %s id %d\n", dai_link->name, dai_link->id);
+		if (strstr(dai_link->name, "SimpleJack")) {
+			tplg_dev = TPLG_DEVICE_SDCA_JACK;
+			tplg_dev_name = "sdca-jack";
+		} else if (strstr(dai_link->name, "SmartAmp")) {
+			tplg_dev = TPLG_DEVICE_SDCA_AMP;
+			tplg_dev_name = devm_kasprintf(card->dev, GFP_KERNEL,
+						       "sdca-%damp", dai_link->num_cpus);
+			if (!tplg_dev_name)
+				return -ENOMEM;
+		} else if (strstr(dai_link->name, "SmartMic")) {
+			tplg_dev = TPLG_DEVICE_SDCA_MIC;
+			tplg_dev_name = "sdca-mic";
+		} else if (strstr(dai_link->name, "dmic")) {
+			switch (mach_params.dmic_num) {
+			case 2:
+				tplg_dev_name = "dmic-2ch";
+				break;
+			case 4:
+				tplg_dev_name = "dmic-4ch";
+				break;
+			default:
+				dev_warn(card->dev,
+					 "only -2ch and -4ch are supported for dmic\n");
+				continue;
+			}
+			tplg_dev = TPLG_DEVICE_INTEL_PCH_DMIC;
+		} else if (strstr(dai_link->name, "iDisp")) {
+			tplg_dev = TPLG_DEVICE_HDMI;
+			tplg_dev_name = "hdmi-pcm5";
+
+		} else {
+			/* The dai link is not supported by separated tplg yet */
+			dev_dbg(card->dev,
+				"dai_link %s is not supported by separated tplg yet\n",
+				dai_link->name);
+			return 0;
+		}
+		if (tplg_mask & BIT(tplg_dev))
+			continue;
+
+		tplg_mask |= BIT(tplg_dev);
+
+		/*
+		 * The tplg file naming rule is sof-<platform>-<function>-id<BE id number>.tplg
+		 * where <platform> is only required for the DMIC function as the nhlt blob
+		 * is platform dependent.
+		 */
+		switch (tplg_dev) {
+		case TPLG_DEVICE_INTEL_PCH_DMIC:
+			(*tplg_files)[tplg_num] = devm_kasprintf(card->dev, GFP_KERNEL,
+								 "%s/sof-%s-%s-id%d.tplg",
+								 prefix, platform,
+								 tplg_dev_name, dai_link->id);
+			break;
+		default:
+			(*tplg_files)[tplg_num] = devm_kasprintf(card->dev, GFP_KERNEL,
+								 "%s/sof-%s-id%d.tplg",
+								 prefix, tplg_dev_name,
+								 dai_link->id);
+			break;
+		}
+		if (!(*tplg_files)[tplg_num])
+			return -ENOMEM;
+		tplg_num++;
+	}
+
+	dev_dbg(card->dev, "tplg_mask %#lx tplg_num %d\n", tplg_mask, tplg_num);
+
+	/* Check presence of sub-topologies */
+	for (i = 0; i < tplg_num; i++) {
+		ret = firmware_request_nowarn(&fw, (*tplg_files)[i], card->dev);
+		if (!ret) {
+			release_firmware(fw);
+		} else {
+			dev_dbg(card->dev, "Failed to open topology file: %s\n", (*tplg_files)[i]);
+			return 0;
+		}
+	}
+
+	return tplg_num;
+}
+