[alsa-devel] [PATCH 10/13] topology: Parse link flags of physical DAI links

[mengdong.lin at linux.intel.com]

From: Mengdong Lin <mengdong.lin at linux.intel.com>

Parse physical DAI link flags defined by text conf file or C API.
The flag mask and flags are added to C API template for physical DAI
links.

Signed-off-by: Mengdong Lin <mengdong.lin at linux.intel.com>

diff --git a/include/topology.h b/include/topology.h
index 85818ac..3692da4 100644
--- a/include/topology.h
+++ b/include/topology.h
@@ -639,6 +639,11 @@ extern "C" {
  *
  *	default_hw_conf_id "1"		#default HW config ID for init
  *
+ *	# Optional boolean flags
+ *	symmetric_rates			"true"
+ *	symmetric_channels		"false"
+ *	symmetric_sample_bits		"true"
+ *
  *	data "name"			# optional private data
  * }
  * </pre>
@@ -988,6 +993,9 @@ struct snd_tplg_link_template {
 	struct snd_tplg_hw_config_template *hw_config; /*!< supported HW configs */
 	int num_hw_configs;		/* number of hw configs */
 	int default_hw_config_id;       /* default hw config ID for init */
+
+	unsigned int flag_mask;         /* bitmask of flags to configure */
+	unsigned int flags;             /* SND_SOC_TPLG_LNK_FLGBIT_* flag value */
 };
 
 /** \struct snd_tplg_obj_template
diff --git a/src/topology/pcm.c b/src/topology/pcm.c
index e92d2b9..a751851 100644
--- a/src/topology/pcm.c
+++ b/src/topology/pcm.c
@@ -664,6 +664,35 @@ int tplg_parse_link(snd_tplg_t *tplg,
 			continue;
 		}
 
+		/* flags */
+		if (strcmp(id, "symmetric_rates") == 0) {
+			err = parse_flag(n,
+				SND_SOC_TPLG_LNK_FLGBIT_SYMMETRIC_RATES,
+				&link->flag_mask, &link->flags);
+			if (err < 0)
+				return err;
+			continue;
+		}
+
+		if (strcmp(id, "symmetric_channels") == 0) {
+			err = parse_flag(n,
+				SND_SOC_TPLG_LNK_FLGBIT_SYMMETRIC_CHANNELS,
+				&link->flag_mask, &link->flags);
+			if (err < 0)
+				return err;
+			continue;
+		}
+
+		if (strcmp(id, "symmetric_sample_bits") == 0) {
+			err = parse_flag(n,
+				SND_SOC_TPLG_LNK_FLGBIT_SYMMETRIC_SAMPLEBITS,
+				&link->flag_mask, &link->flags);
+			if (err < 0)
+				return err;
+			continue;
+		}
+
+		/* private data */
 		if (strcmp(id, "data") == 0) {
 			err = tplg_parse_data_refs(n, elem);
 			if (err < 0)
@@ -1010,5 +1039,9 @@ int tplg_add_link_object(snd_tplg_t *tplg, snd_tplg_obj_template_t *t)
 	link->default_hw_config_id = link_tpl->default_hw_config_id;
 	for (i = 0; i < link->num_hw_configs; i++)
 		set_link_hw_config(&link->hw_config[i], &link_tpl->hw_config[i]);
+
+	/* flags */
+	link->flag_mask = link_tpl->flag_mask;
+	link->flags = link_tpl->flags;
 	return 0;
 }
-- 
2.7.4