1 files changed, 119 insertions, 0 deletions
diff --git a/sound/soc/intel/boards/sof_sdw_rt1316.c b/sound/soc/intel/boards/sof_sdw_rt1316.c
new file mode 100644
index 000000000000..d6e1ebf18d57
--- /dev/null
+++ b/sound/soc/intel/boards/sof_sdw_rt1316.c
@@ -0,0 +1,119 @@
+// SPDX-License-Identifier: GPL-2.0-only
+// Copyright (c) 2020 Intel Corporation
+
+/*
+ *  sof_sdw_rt1316 - Helpers to handle RT1316 from generic machine driver
+ */
+
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <sound/control.h>
+#include <sound/soc.h>
+#include <sound/soc-acpi.h>
+#include <sound/soc-dapm.h>
+#include "sof_sdw_common.h"
+
+static const struct snd_soc_dapm_widget rt1316_widgets[] = {
+	SND_SOC_DAPM_SPK("Speaker", NULL),
+};
+
+/*
+ * dapm routes for rt1316 will be registered dynamically according
+ * to the number of rt1316 used. The first two entries will be registered
+ * for one codec case, and the last two entries are also registered
+ * if two 1316s are used.
+ */
+static const struct snd_soc_dapm_route rt1316_map[] = {
+	{ "Speaker", NULL, "rt1316-1 SPOL" },
+	{ "Speaker", NULL, "rt1316-1 SPOR" },
+	{ "Speaker", NULL, "rt1316-2 SPOL" },
+	{ "Speaker", NULL, "rt1316-2 SPOR" },
+};
+
+static const struct snd_kcontrol_new rt1316_controls[] = {
+	SOC_DAPM_PIN_SWITCH("Speaker"),
+};
+
+static int first_spk_init(struct snd_soc_pcm_runtime *rtd)
+{
+	struct snd_soc_card *card = rtd->card;
+	int ret;
+
+	card->components = devm_kasprintf(card->dev, GFP_KERNEL,
+					  "%s spk:rt1316",
+					  card->components);
+	if (!card->components)
+		return -ENOMEM;
+
+	ret = snd_soc_add_card_controls(card, rt1316_controls,
+					ARRAY_SIZE(rt1316_controls));
+	if (ret) {
+		dev_err(card->dev, "rt1316 controls addition failed: %d\n", ret);
+		return ret;
+	}
+
+	ret = snd_soc_dapm_new_controls(&card->dapm, rt1316_widgets,
+					ARRAY_SIZE(rt1316_widgets));
+	if (ret) {
+		dev_err(card->dev, "rt1316 widgets addition failed: %d\n", ret);
+		return ret;
+	}
+
+	ret = snd_soc_dapm_add_routes(&card->dapm, rt1316_map, 2);
+	if (ret)
+		dev_err(rtd->dev, "failed to add first SPK map: %d\n", ret);
+
+	return ret;
+}
+
+static int second_spk_init(struct snd_soc_pcm_runtime *rtd)
+{
+	struct snd_soc_card *card = rtd->card;
+	int ret;
+
+	ret = snd_soc_dapm_add_routes(&card->dapm, rt1316_map + 2, 2);
+	if (ret)
+		dev_err(rtd->dev, "failed to add second SPK map: %d\n", ret);
+
+	return ret;
+}
+
+static int all_spk_init(struct snd_soc_pcm_runtime *rtd)
+{
+	int ret;
+
+	ret = first_spk_init(rtd);
+	if (ret)
+		return ret;
+
+	return second_spk_init(rtd);
+}
+
+int sof_sdw_rt1316_init(const struct snd_soc_acpi_link_adr *link,
+			struct snd_soc_dai_link *dai_links,
+			struct sof_sdw_codec_info *info,
+			bool playback)
+{
+	/* Count amp number and do init on playback link only. */
+	if (!playback)
+		return 0;
+
+	info->amp_num++;
+	if (info->amp_num == 1)
+		dai_links->init = first_spk_init;
+
+	if (info->amp_num == 2) {
+		/*
+		 * if two 1316s are in one dai link, the init function
+		 * in this dai link will be first set for the first speaker,
+		 * and it should be reset to initialize all speakers when
+		 * the second speaker is found.
+		 */
+		if (dai_links->init)
+			dai_links->init = all_spk_init;
+		else
+			dai_links->init = second_spk_init;
+	}
+
+	return 0;
+}