1 files changed, 68 insertions, 0 deletions
diff --git a/sound/soc/sdca/sdca_device.c b/sound/soc/sdca/sdca_device.c
new file mode 100644
index 000000000000..0244cdcdd109
--- /dev/null
+++ b/sound/soc/sdca/sdca_device.c
@@ -0,0 +1,68 @@
+// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
+// Copyright(c) 2024 Intel Corporation
+
+/*
+ * The MIPI SDCA specification is available for public downloads at
+ * https://www.mipi.org/mipi-sdca-v1-0-download
+ */
+
+#include <linux/acpi.h>
+#include <linux/module.h>
+#include <linux/property.h>
+#include <linux/soundwire/sdw.h>
+#include <sound/sdca.h>
+#include <sound/sdca_function.h>
+
+void sdca_lookup_interface_revision(struct sdw_slave *slave)
+{
+	struct fwnode_handle *fwnode = slave->dev.fwnode;
+
+	/*
+	 * if this property is not present, then the sdca_interface_revision will
+	 * remain zero, which will be considered as 'not defined' or 'invalid'.
+	 */
+	fwnode_property_read_u32(fwnode, "mipi-sdw-sdca-interface-revision",
+				 &slave->sdca_data.interface_revision);
+}
+EXPORT_SYMBOL_NS(sdca_lookup_interface_revision, "SND_SOC_SDCA");
+
+static bool sdca_device_quirk_rt712_vb(struct sdw_slave *slave)
+{
+	struct sdw_slave_id *id = &slave->id;
+	int i;
+
+	/*
+	 * The RT712_VA relies on the v06r04 draft, and the
+	 * RT712_VB on a more recent v08r01 draft.
+	 */
+	if (slave->sdca_data.interface_revision < 0x0801)
+		return false;
+
+	if (id->mfg_id != 0x025d)
+		return false;
+
+	if (id->part_id != 0x712 &&
+	    id->part_id != 0x713 &&
+	    id->part_id != 0x716 &&
+	    id->part_id != 0x717)
+		return false;
+
+	for (i = 0; i < slave->sdca_data.num_functions; i++) {
+		if (slave->sdca_data.function[i].type == SDCA_FUNCTION_TYPE_SMART_MIC)
+			return true;
+	}
+
+	return false;
+}
+
+bool sdca_device_quirk_match(struct sdw_slave *slave, enum sdca_quirk quirk)
+{
+	switch (quirk) {
+	case SDCA_QUIRKS_RT712_VB:
+		return sdca_device_quirk_rt712_vb(slave);
+	default:
+		break;
+	}
+	return false;
+}
+EXPORT_SYMBOL_NS(sdca_device_quirk_match, "SND_SOC_SDCA");