ASoC: get sdw dmic number for Intel platforms

include/sound/sdca.h

@@ -63,6 +63,7 @@ enum sdca_quirk {
 #if IS_ENABLED(CONFIG_ACPI) && IS_ENABLED(CONFIG_SND_SOC_SDCA)
 
 void sdca_lookup_functions(struct sdw_slave *slave);
+int sdca_get_mic_count(struct sdw_slave *slave, struct sdca_function_desc *function);
 void sdca_lookup_swft(struct sdw_slave *slave);
 void sdca_lookup_interface_revision(struct sdw_slave *slave);
 bool sdca_device_quirk_match(struct sdw_slave *slave, enum sdca_quirk quirk);

sound/soc/intel/boards/sof_sdw.c

@@ -14,6 +14,9 @@
 #include <linux/soundwire/sdw_type.h>
 #include <linux/soundwire/sdw_intel.h>
 #include <sound/core.h>
+#include <sound/sdca.h>
+#include <sound/sdca_function.h>
+#include <sound/soc.h>
 #include <sound/soc-acpi.h>
 #include "sof_sdw_common.h"
 #include "../../codecs/rt711.h"
@@ -900,6 +903,23 @@ static const struct snd_soc_ops sdw_ops = {
 
 static const char * const type_strings[] = {"SimpleJack", "SmartAmp", "SmartMic"};
 
+static struct sdw_slave *sof_sdw_get_peripheral_by_codec_name(const char *codec_name)
+{
+	struct snd_soc_component *component;
+
+	component = snd_soc_lookup_component_by_name(codec_name);
+	if (!component)
+		return NULL;
+
+	if (is_sdw_slave(component->dev))
+		return dev_to_sdw_dev(component->dev);
+
+	if (component->dev->parent && is_sdw_slave(component->dev->parent))
+		return dev_to_sdw_dev(component->dev->parent);
+
+	return NULL;
+}
+
 static int create_sdw_dailink(struct snd_soc_card *card,
 			      struct asoc_sdw_dailink *sof_dai,
 			      struct snd_soc_dai_link **dai_links,
@@ -1011,6 +1031,37 @@ static int create_sdw_dailink(struct snd_soc_card *card,
 
 			codecs[j].name = sof_end->codec_name;
 			codecs[j].dai_name = sof_end->dai_info->dai_name;
+
+			if (sof_end->dai_info->dai_type == SOC_SDW_DAI_TYPE_MIC) {
+				struct sdw_slave *peripheral;
+				int sdw_mic_num;
+				int k;
+
+				peripheral = sof_sdw_get_peripheral_by_codec_name(sof_end->codec_name);
+				if (!peripheral) {
+					dev_warn(dev, "failed to get peripheral for codec %s\n",
+						 sof_end->codec_name);
+					continue;
+				}
+
+				for (k = 0; k < peripheral->sdca_data.num_functions; k++) {
+					if (peripheral->sdca_data.function[k].type != SDCA_FUNCTION_TYPE_SMART_MIC)
+						continue;
+
+					sdw_mic_num = sdca_get_mic_count(peripheral, &peripheral->sdca_data.function[k]);
+					dev_dbg(dev, "%s mic num %d\n", sof_end->codec_name, sdw_mic_num);
+					if (sdw_mic_num > 0) {
+						char *tmp = name;
+						name = devm_kasprintf(dev, GFP_KERNEL, "%s-%dch", name, sdw_mic_num);
+						if (!name)
+							return -ENOMEM;
+
+						devm_kfree(dev, tmp);
+					}
+				}
+
+			}
+
 			if (sof_end->dai_info->dai_type == SOC_SDW_DAI_TYPE_MIC &&
 			    mach_params->dmic_num > 0) {
 				dev_warn(dev,
@@ -1582,3 +1633,4 @@ MODULE_AUTHOR("Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>");
 MODULE_LICENSE("GPL v2");
 MODULE_IMPORT_NS("SND_SOC_INTEL_HDA_DSP_COMMON");
 MODULE_IMPORT_NS("SND_SOC_SDW_UTILS");
+MODULE_IMPORT_NS("SND_SOC_SDCA");

sound/soc/sdca/sdca_functions.c

@@ -200,6 +200,111 @@ void sdca_lookup_functions(struct sdw_slave *slave)
 }
 EXPORT_SYMBOL_NS(sdca_lookup_functions, "SND_SOC_SDCA");
 
+int sdca_get_mic_count(struct sdw_slave *slave, struct sdca_function_desc *function)
+{
+	struct fwnode_handle *function_node;
+	u32 *entity_list __free(kfree) = NULL;
+	u32 transducer_count = 0;
+	u32 terminal_type;
+	int num_entities;
+	int ret;
+	int i;
+
+	if (!function || !function->node)
+		return -EINVAL;
+
+	function_node = function->node;
+
+	num_entities = fwnode_property_count_u32(function_node,
+					 "mipi-sdca-entity-id-list");
+	if (num_entities <= 0) {
+		dev_err(&slave->dev,
+			"%pfwP: no entity list found for function type %u\n",
+			function_node, function->type);
+		return -EINVAL;
+	}
+
+	entity_list = kcalloc(num_entities, sizeof(*entity_list), GFP_KERNEL);
+	if (!entity_list)
+		return -ENOMEM;
+
+	ret = fwnode_property_read_u32_array(function_node,
+					    "mipi-sdca-entity-id-list",
+					    entity_list, num_entities);
+	if (ret) {
+		dev_err(&slave->dev,
+			"%pfwP: failed to read entity id list for function type %u: %d\n",
+			function_node, function->type, ret);
+		return -EINVAL;
+	}
+
+	for (i = 0; i < num_entities; i++) {
+		struct fwnode_handle *entity_node;
+		const char *entity_label = "<unknown>";
+		u32 entity_type;
+		char entity_property[SDCA_PROPERTY_LENGTH];
+
+		/* DisCo uses upper-case for hex numbers */
+		snprintf(entity_property, sizeof(entity_property),
+			 "mipi-sdca-entity-id-0x%X-subproperties", entity_list[i]);
+
+		entity_node = fwnode_get_named_child_node(function_node, entity_property);
+		if (!entity_node) {
+			dev_dbg(&slave->dev, "%pfwP: missing entity node %s\n",
+				function_node, entity_property);
+			continue;
+		}
+
+		fwnode_property_read_string(entity_node, "mipi-sdca-entity-label",
+					    &entity_label);
+
+		ret = fwnode_property_read_u32(entity_node, "mipi-sdca-entity-type",
+					      &entity_type);
+		if (ret) {
+			dev_info(&slave->dev,
+				 "SDCA function %s (type %u adr 0x%x): entity 0x%x label %s type missing\n",
+				 function->name, function->type, function->adr,
+				 entity_list[i], entity_label);
+			fwnode_handle_put(entity_node);
+			goto put_entity_node;
+		}
+
+		dev_dbg(&slave->dev,
+			"SDCA function %s (type %u adr 0x%x): entity 0x%x label %s type 0x%x\n",
+			function->name, function->type, function->adr,
+			entity_list[i], entity_label, entity_type);
+
+		if (entity_type == SDCA_ENTITY_TYPE_IT) {
+			ret = fwnode_property_read_u32(entity_node,
+					       "mipi-sdca-terminal-type",
+					       &terminal_type);
+			if (ret)
+				goto put_entity_node;
+
+			if (terminal_type != SDCA_TERM_TYPE_MICROPHONE_TRANSDUCER &&
+			    terminal_type != SDCA_TERM_TYPE_MICROPHONE_ARRAY_TRANSDUCER)
+				goto put_entity_node;
+
+			ret = fwnode_property_read_u32(entity_node,
+					       "mipi-sdca-terminal-transducer-count",
+					       &transducer_count);
+			if (ret)
+				goto put_entity_node;
+
+			dev_info(&slave->dev,
+				 "SDCA function %s entity %s: iot mipi-sdca-terminal-type=%#x mipi-sdca-terminal-transducer-count=%u\n",
+				 function->name, entity_label, terminal_type, transducer_count);
+			break;
+		}
+
+put_entity_node:
+		fwnode_handle_put(entity_node);
+	}
+
+	return transducer_count;
+}
+EXPORT_SYMBOL_NS(sdca_get_mic_count, "SND_SOC_SDCA");
+
 struct raw_init_write {
 	__le32 addr;
 	u8 val;