topology: Add support for widget byte controls

Add support for DAPM widgets to include bytes controls.

Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 30 insertions, 0 deletions

diff --git a/src/topology/dapm.c b/src/topology/dapm.c
index 14969eed..278d6056 100644
--- a/src/topology/dapm.c
+++ b/src/topology/dapm.c
@@ -103,6 +103,28 @@ static int tplg_parse_dapm_enums(snd_config_t *cfg, struct tplg_elem *elem)
 	return 0;
 }
 
+static int tplg_parse_dapm_bytes(snd_config_t *cfg, struct tplg_elem *elem)
+{
+	snd_config_iterator_t i, next;
+	snd_config_t *n;
+	const char *value = NULL;
+
+	tplg_dbg(" DAPM Bytes Controls: %s\n", elem->id);
+
+	snd_config_for_each(i, next, cfg) {
+		n = snd_config_iterator_entry(i);
+
+		/* get value */
+		if (snd_config_get_string(n, &value) < 0)
+			continue;
+
+		tplg_ref_add(elem, SND_TPLG_TYPE_BYTES, value);
+		tplg_dbg("\t\t %s\n", value);
+	}
+
+	return 0;
+}
+
 /* move referenced controls to the widget */
 static int copy_dapm_control(struct tplg_elem *elem, struct tplg_elem *ref)
 {
@@ -567,6 +589,14 @@ int tplg_parse_dapm_widget(snd_tplg_t *tplg,
 			continue;
 		}
 
+		if (strcmp(id, "bytes") == 0) {
+			err = tplg_parse_dapm_bytes(n, elem);
+			if (err < 0)
+				return err;
+
+			continue;
+		}
+
 		if (strcmp(id, "data") == 0) {
 			if (snd_config_get_string(n, &val) < 0)
 				return -EINVAL;