[PATCH v3 6/8] ASoC: SDCA: add sdca_apply_default_control_classifiers() helper

[Srinivas Kandagatla <srinivas.kandagatla@oss.qualcomm.com>]

sdca_parse_function() derives is_volatile (see c7b6c6b60594) and the
spec-defined reset value (see 02d851b46b36) from each Control's
(entity type, selector, access mode). Codecs that ship static SDCA
tables via populate_function skip that path, so RW1S action Controls
end up with is_volatile=0 and get replayed on every regcache_sync.

Add sdca_apply_default_control_classifiers() to re-run those two
classifiers over a Function.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@oss.qualcomm.com>
---
 include/sound/sdca_function.h   |  2 ++
 sound/soc/sdca/sdca_functions.c | 29 +++++++++++++++++++++++++++++
 2 files changed, 31 insertions(+)

diff --git a/include/sound/sdca_function.h b/include/sound/sdca_function.h
index e580201d69d5..d3d77d8bb7cd 100644
--- a/include/sound/sdca_function.h
+++ b/include/sound/sdca_function.h
@@ -1464,6 +1464,8 @@ static inline u32 sdca_range_search(struct sdca_control_range *range,
 
 int sdca_parse_function(struct device *dev, struct sdca_function_data *function);
 
+void sdca_apply_default_control_classifiers(struct sdca_function_data *function);
+
 const char *sdca_find_terminal_name(enum sdca_terminal_type type);
 
 struct sdca_control *sdca_selector_find_control(struct device *dev,
diff --git a/sound/soc/sdca/sdca_functions.c b/sound/soc/sdca/sdca_functions.c
index 6eb0e1059dbd..4196c5c86a85 100644
--- a/sound/soc/sdca/sdca_functions.c
+++ b/sound/soc/sdca/sdca_functions.c
@@ -2267,6 +2267,35 @@ int sdca_parse_function(struct device *dev, struct sdca_function_data *function)
 }
 EXPORT_SYMBOL_NS(sdca_parse_function, "SND_SOC_SDCA");
 
+/**
+ * sdca_apply_default_control_classifiers - apply framework-known Control fields
+ * @function: Function populated via static tables (populate_function path).
+ *
+ * Runs the same per-Control classifiers as sdca_parse_function() so both
+ * entry paths land on identical @is_volatile and @has_reset/@reset fields.
+ * Elevate-only: codec-set flags/values are preserved.
+ */
+void sdca_apply_default_control_classifiers(struct sdca_function_data *function)
+{
+	int i, j;
+
+	for (i = 0; i < function->num_entities; i++) {
+		struct sdca_entity *entity = &function->entities[i];
+
+		for (j = 0; j < entity->num_controls; j++) {
+			struct sdca_control *control = &entity->controls[j];
+
+			if (!control->is_volatile)
+				control->is_volatile =
+					find_sdca_control_volatile(entity, control);
+
+			if (!control->has_reset)
+				find_sdca_control_reset(entity, control);
+		}
+	}
+}
+EXPORT_SYMBOL_NS(sdca_apply_default_control_classifiers, "SND_SOC_SDCA");
+
 const char *sdca_find_terminal_name(enum sdca_terminal_type type)
 {
 	switch (type) {
-- 
2.53.0