alsa-utils/0010-topology-pre-processor-Add-support-for-enum-controls.patch

From 68dd54784a0b2287015433a62600b28bbff49399 Mon Sep 17 00:00:00 2001
From: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Date: Mon, 11 Sep 2023 08:18:15 -0700
Subject: [PATCH] topology: pre-processor: Add support for enum controls

Add support for adding enum controls in the topology pre-processor.

Closes: https://github.com/alsa-project/alsa-utils/pull/236
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
---
 topology/pre-process-dapm.c   | 26 ++++++++++++++++++++++++++
 topology/pre-process-object.c | 14 +++++++++++++-
 topology/pre-processor.h      |  4 ++++
 3 files changed, 43 insertions(+), 1 deletion(-)

diff --git a/topology/pre-process-dapm.c b/topology/pre-process-dapm.c
index 9355a861757d..78944a6d9801 100644
--- a/topology/pre-process-dapm.c
+++ b/topology/pre-process-dapm.c
@@ -70,6 +70,26 @@ int tplg_build_channel_object(struct tplg_pre_processor *tplg_pp, snd_config_t *
 	return tplg_build_base_object(tplg_pp, obj_cfg, parent, false);
 }
 
+int tplg_build_text_object(struct tplg_pre_processor *tplg_pp, snd_config_t *obj_cfg,
+			   snd_config_t *parent)
+{
+	snd_config_t *cfg;
+	const char *name;
+	int ret;
+
+	cfg = tplg_object_get_instance_config(tplg_pp, obj_cfg);
+
+	name = tplg_object_get_name(tplg_pp, cfg);
+	if (!name)
+		return -EINVAL;
+
+	ret = tplg_build_object_from_template(tplg_pp, obj_cfg, &cfg, NULL, false);
+	if (ret < 0)
+		return ret;
+
+	return tplg_parent_update(tplg_pp, parent, "texts", name);
+}
+
 int tplg_build_tlv_object(struct tplg_pre_processor *tplg_pp, snd_config_t *obj_cfg,
 			      snd_config_t *parent)
 {
@@ -131,6 +151,12 @@ int tplg_build_bytes_control(struct tplg_pre_processor *tplg_pp, snd_config_t *o
 	return tplg_build_control(tplg_pp, obj_cfg, parent, "bytes");
 }
 
+int tplg_build_enum_control(struct tplg_pre_processor *tplg_pp, snd_config_t *obj_cfg,
+			     snd_config_t *parent)
+{
+	return tplg_build_control(tplg_pp, obj_cfg, parent, "enum");
+}
+
 /*
  * Widget names for pipeline endpoints can be of the following type:
  * "class.<constructor args separated by .> ex: pga.0.1, buffer.1.1 etc
diff --git a/topology/pre-process-object.c b/topology/pre-process-object.c
index 61cc85fbc43d..34b92033435c 100644
--- a/topology/pre-process-object.c
+++ b/topology/pre-process-object.c
@@ -117,7 +117,7 @@ int tplg_parent_update(struct tplg_pre_processor *tplg_pp, snd_config_t *parent,
 		return ret;
 
 	/* get section config */
-	if (!strcmp(section_name, "tlv")) {
+	if (!strcmp(section_name, "tlv") || !strcmp(section_name, "texts")) {
 		/* set tlv name if config exists already */
 		ret = snd_config_search(cfg, section_name, &item_config);
 			if (ret < 0) {
@@ -1038,6 +1038,15 @@ const struct config_template_items bytes_control_config = {
 	.compound_config_ids = {"access"}
 };
 
+const struct config_template_items enum_control_config = {
+	.int_config_ids = {"index"},
+	.compound_config_ids = {"access"}
+};
+
+const struct config_template_items text_config = {
+	.compound_config_ids = {"values"}
+};
+
 const struct config_template_items scale_config = {
 	.int_config_ids = {"min", "step", "mute"},
 };
@@ -1073,6 +1082,7 @@ const struct build_function_map object_build_map[] = {
 	{"Base", "ops", "ops" ,&tplg_build_ops_object, NULL, &ops_config},
 	{"Base", "extops", "extops" ,&tplg_build_ops_object, NULL, &ops_config},
 	{"Base", "channel", "channel", &tplg_build_channel_object, NULL, &channel_config},
+	{"Base", "text", "SectionText", &tplg_build_text_object, NULL, &text_config},
 	{"Base", "VendorToken", "SectionVendorTokens", &tplg_build_vendor_token_object,
 	 NULL, NULL},
 	{"Base", "hw_config", "SectionHWConfig", &tplg_build_hw_cfg_object, NULL,
@@ -1085,6 +1095,8 @@ const struct build_function_map object_build_map[] = {
 	 &mixer_control_config},
 	{"Control", "bytes", "SectionControlBytes", &tplg_build_bytes_control, NULL,
 	 &bytes_control_config},
+	 {"Control", "enum", "SectionControlEnum", &tplg_build_enum_control, NULL,
+	 &enum_control_config},
 	{"Dai", "", "SectionBE", &tplg_build_generic_object, NULL, &be_dai_config},
 	{"PCM", "pcm", "SectionPCM", &tplg_build_generic_object, NULL, &pcm_config},
 	{"PCM", "pcm_caps", "SectionPCMCapabilities", &tplg_build_pcm_caps_object,
diff --git a/topology/pre-processor.h b/topology/pre-processor.h
index 878653d4c849..3a8a4bc3b1a8 100644
--- a/topology/pre-processor.h
+++ b/topology/pre-processor.h
@@ -70,6 +70,10 @@ int tplg_build_mixer_control(struct tplg_pre_processor *tplg_pp, snd_config_t *o
 			      snd_config_t *parent);
 int tplg_build_bytes_control(struct tplg_pre_processor *tplg_pp, snd_config_t *obj_cfg,
 			      snd_config_t *parent);
+int tplg_build_enum_control(struct tplg_pre_processor *tplg_pp, snd_config_t *obj_cfg,
+			     snd_config_t *parent);
+int tplg_build_text_object(struct tplg_pre_processor *tplg_pp, snd_config_t *obj_cfg,
+			   snd_config_t *parent);
 int tplg_build_dapm_route_object(struct tplg_pre_processor *tplg_pp, snd_config_t *obj_cfg,
 			      snd_config_t *parent);
 int tplg_build_hw_cfg_object(struct tplg_pre_processor *tplg_pp,
-- 
2.35.3