1 files changed, 85 insertions, 0 deletions
diff --git a/sound/soc/sdw_utils/soc_sdw_rt_mf_sdca.c b/sound/soc/sdw_utils/soc_sdw_rt_mf_sdca.c
new file mode 100644
index 000000000000..8143d59ad10f
--- /dev/null
+++ b/sound/soc/sdw_utils/soc_sdw_rt_mf_sdca.c
@@ -0,0 +1,85 @@
+// SPDX-License-Identifier: GPL-2.0-only
+// This file incorporates work covered by the following copyright notice:
+// Copyright (c) 2024 Intel Corporation.
+
+/*
+ *  soc_sdw_rt_mf_sdca
+ *  - Helpers to handle RT Multifunction Codec from generic machine driver
+ */
+
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/soundwire/sdw.h>
+#include <linux/soundwire/sdw_type.h>
+#include <sound/control.h>
+#include <sound/soc.h>
+#include <sound/soc-acpi.h>
+#include <sound/soc-dapm.h>
+#include <sound/soc_sdw_utils.h>
+
+#define CODEC_NAME_SIZE	6
+
+/* dapm routes for RT-SPK will be registered dynamically */
+static const struct snd_soc_dapm_route rt712_spk_map[] = {
+	{ "Speaker", NULL, "rt712 SPOL" },
+	{ "Speaker", NULL, "rt712 SPOR" },
+};
+
+static const struct snd_soc_dapm_route rt722_spk_map[] = {
+	{ "Speaker", NULL, "rt722 SPK" },
+};
+
+/* Structure to map codec names to respective route arrays and sizes */
+struct codec_route_map {
+	const char *codec_name;
+	const struct snd_soc_dapm_route *route_map;
+	size_t route_size;
+};
+
+/* Codec route maps array */
+static const struct codec_route_map codec_routes[] = {
+	{ "rt712", rt712_spk_map, ARRAY_SIZE(rt712_spk_map) },
+	{ "rt722", rt722_spk_map, ARRAY_SIZE(rt722_spk_map) },
+};
+
+static const struct codec_route_map *get_codec_route_map(const char *codec_name)
+{
+	for (size_t i = 0; i < ARRAY_SIZE(codec_routes); i++) {
+		if (strcmp(codec_routes[i].codec_name, codec_name) == 0)
+			return &codec_routes[i];
+	}
+	return NULL;
+}
+
+int asoc_sdw_rt_mf_sdca_spk_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *dai)
+{
+	struct snd_soc_card *card = rtd->card;
+	char codec_name[CODEC_NAME_SIZE];
+	int ret;
+
+	/* acquire codec name */
+	snprintf(codec_name, CODEC_NAME_SIZE, "%s", dai->name);
+
+	/* acquire corresponding route map and size */
+	const struct codec_route_map *route_map = get_codec_route_map(codec_name);
+
+	if (!route_map) {
+		dev_err(rtd->dev, "failed to get codec name and route map\n");
+		return -EINVAL;
+	}
+
+	/* Update card components */
+	card->components = devm_kasprintf(card->dev, GFP_KERNEL,
+					  "%s spk:%s",
+					  card->components, codec_name);
+	if (!card->components)
+		return -ENOMEM;
+
+	/* Add routes */
+	ret = snd_soc_dapm_add_routes(&card->dapm, route_map->route_map, route_map->route_size);
+	if (ret)
+		dev_err(rtd->dev, "failed to add rt sdca spk map: %d\n", ret);
+
+	return ret;
+}
+EXPORT_SYMBOL_NS(asoc_sdw_rt_mf_sdca_spk_rtd_init, SND_SOC_SDW_UTILS);