ASoC: intel/sdw_utils: move dmic codec helper function

Move generic dmic codec helper function implementation to
sdw_utils folder so that this function can be used by other platform
machine drivers.

Link: https://github.com/thesofproject/linux/pull/5068
Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://patch.msgid.link/20240801091446.10457-11-Vijendar.Mukunda@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>

2 files changed, 46 insertions, 1 deletions

diff --git a/sound/soc/sdw_utils/Makefile b/sound/soc/sdw_utils/Makefile
index 29b2852be287..de8aff8744d8 100644
--- a/sound/soc/sdw_utils/Makefile
+++ b/sound/soc/sdw_utils/Makefile
@@ -1,3 +1,3 @@
 # SPDX-License-Identifier: GPL-2.0-only
-snd-soc-sdw-utils-y := soc_sdw_utils.o
+snd-soc-sdw-utils-y := soc_sdw_utils.o soc_sdw_dmic.o
 obj-$(CONFIG_SND_SOC_SDW_UTILS) += snd-soc-sdw-utils.o
diff --git a/sound/soc/sdw_utils/soc_sdw_dmic.c b/sound/soc/sdw_utils/soc_sdw_dmic.c
new file mode 100644
index 000000000000..fc2aae985084
--- /dev/null
+++ b/sound/soc/sdw_utils/soc_sdw_dmic.c
@@ -0,0 +1,45 @@
+// SPDX-License-Identifier: GPL-2.0-only
+// This file incorporates work covered by the following copyright notice:
+// Copyright (c) 2020 Intel Corporation
+// Copyright (c) 2024 Advanced Micro Devices, Inc.
+
+/*
+ *  soc_sdw_dmic - Helpers to handle dmic from generic machine driver
+ */
+
+#include <sound/soc.h>
+#include <sound/soc-acpi.h>
+#include <sound/soc-dapm.h>
+#include <sound/soc_sdw_utils.h>
+
+static const struct snd_soc_dapm_widget dmic_widgets[] = {
+	SND_SOC_DAPM_MIC("SoC DMIC", NULL),
+};
+
+static const struct snd_soc_dapm_route dmic_map[] = {
+	/* digital mics */
+	{"DMic", NULL, "SoC DMIC"},
+};
+
+int asoc_sdw_dmic_init(struct snd_soc_pcm_runtime *rtd)
+{
+	struct snd_soc_card *card = rtd->card;
+	int ret;
+
+	ret = snd_soc_dapm_new_controls(&card->dapm, dmic_widgets,
+					ARRAY_SIZE(dmic_widgets));
+	if (ret) {
+		dev_err(card->dev, "DMic widget addition failed: %d\n", ret);
+		/* Don't need to add routes if widget addition failed */
+		return ret;
+	}
+
+	ret = snd_soc_dapm_add_routes(&card->dapm, dmic_map,
+				      ARRAY_SIZE(dmic_map));
+
+	if (ret)
+		dev_err(card->dev, "DMic map addition failed: %d\n", ret);
+
+	return ret;
+}
+EXPORT_SYMBOL_NS(asoc_sdw_dmic_init, SND_SOC_SDW_UTILS);