topology: Parse HW configurations of physical DAI links defined by C API

Add HW configurations to C API template of physical link configuration.

Signed-off-by: Mengdong Lin <mengdong.lin@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

include/topology.h

@@ -927,6 +927,33 @@ struct snd_tplg_pcm_template {
 	struct snd_tplg_stream_template stream[0]; /*!< supported configs */
 };
 
+ /** \struct snd_tplg_hw_config_template
+ * \brief Template type to describe a physical link runtime supported
+ * hardware config, i.e. hardware audio formats.
+ */
+struct snd_tplg_hw_config_template {
+	int id;                         /* unique ID - - used to match */
+	unsigned int fmt;               /* SND_SOC_DAI_FORMAT_ format value */
+	unsigned char clock_gated;      /* 1 if clock can be gated to save power */
+	unsigned char  invert_bclk;     /* 1 for inverted BCLK, 0 for normal */
+	unsigned char  invert_fsync;    /* 1 for inverted frame clock, 0 for normal */
+	unsigned char  bclk_master;     /* 1 for master of BCLK, 0 for slave */
+	unsigned char  fsync_master;    /* 1 for master of FSYNC, 0 for slave */
+	unsigned char  mclk_direction;  /* 0 for input, 1 for output */
+	unsigned short reserved;        /* for 32bit alignment */
+	unsigned int mclk_rate;	        /* MCLK or SYSCLK freqency in Hz */
+	unsigned int bclk_rate;	        /* BCLK freqency in Hz */
+	unsigned int fsync_rate;        /* frame clock in Hz */
+	unsigned int tdm_slots;         /* number of TDM slots in use */
+	unsigned int tdm_slot_width;    /* width in bits for each slot */
+	unsigned int tx_slots;          /* bit mask for active Tx slots */
+	unsigned int rx_slots;          /* bit mask for active Rx slots */
+	unsigned int tx_channels;       /* number of Tx channels */
+	unsigned int *tx_chanmap;       /* array of slot number */
+	unsigned int rx_channels;       /* number of Rx channels */
+	unsigned int *rx_chanmap;       /* array of slot number */
+};
+
 /** \struct snd_tplg_link_template
  * \brief Template type for BE and CC DAI Links.
  */
@@ -934,7 +961,11 @@ struct snd_tplg_link_template {
 	const char *name;	/*!< link name */
 	int id;	/*!< unique ID - used to match with existing BE and CC links */
 	int num_streams;	/*!< number of configs */
-	struct snd_tplg_stream_template stream[0]; /*!< supported configs */
+	struct snd_tplg_stream_template *stream;       /*!< supported configs */
+
+	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 */
 };
 
 /** \struct snd_tplg_obj_template

src/topology/elem.c

@@ -193,6 +193,7 @@ struct tplg_elem* tplg_elem_new_common(snd_tplg_t *tplg,
 		obj_size = sizeof(struct snd_soc_tplg_pcm);
 		break;
 	case SND_TPLG_TYPE_BE:
+	case SND_TPLG_TYPE_LINK:
 		list_add_tail(&elem->list, &tplg->be_list);
 		obj_size = sizeof(struct snd_soc_tplg_link_config);
 		break;

src/topology/parser.c

@@ -348,6 +348,7 @@ int snd_tplg_add_object(snd_tplg_t *tplg, snd_tplg_obj_template_t *t)
 		return tplg_add_graph_object(tplg, t);
 	case SND_TPLG_TYPE_PCM:
 		return tplg_add_pcm_object(tplg, t);
+	case SND_TPLG_TYPE_LINK:
 	case SND_TPLG_TYPE_BE:
 	case SND_TPLG_TYPE_CC:
 		return tplg_add_link_object(tplg, t);

src/topology/pcm.c

@@ -168,7 +168,7 @@ static int build_link(snd_tplg_t *tplg, struct tplg_elem *elem)
 	return 0;
 }
 
-/* build BE/CC DAI link configurations */
+/* build physical DAI link configurations */
 int tplg_build_links(snd_tplg_t *tplg, unsigned int type)
 {
 	struct list_head *base, *pos;
@@ -176,6 +176,7 @@ int tplg_build_links(snd_tplg_t *tplg, unsigned int type)
 	int err = 0;
 
 	switch (type) {
+	case SND_TPLG_TYPE_LINK:
 	case SND_TPLG_TYPE_BE:
 		base = &tplg->be_list;
 		break;
@@ -189,11 +190,6 @@ int tplg_build_links(snd_tplg_t *tplg, unsigned int type)
 	list_for_each(pos, base) {
 
 		elem = list_entry(pos, struct tplg_elem, list);
-		if (elem->type != type) {
-			SNDERR("error: invalid elem '%s'\n", elem->id);
-			return -EINVAL;
-		}
-
 		err =  build_link(tplg, elem);
 		if (err < 0)
 			return err;
@@ -741,6 +737,47 @@ int tplg_add_pcm_object(snd_tplg_t *tplg, snd_tplg_obj_template_t *t)
 	return 0;
 }
 
+/* Set link HW config from C API template */
+static int set_link_hw_config(struct snd_soc_tplg_hw_config *cfg,
+			struct snd_tplg_hw_config_template *tpl)
+{
+	int i;
+
+	cfg->size = sizeof(*cfg);
+	cfg->id = tpl->id;
+
+	cfg->fmt = tpl->fmt;
+	cfg->clock_gated = tpl->clock_gated;
+	cfg->invert_bclk = tpl->invert_bclk;
+	cfg->invert_fsync = tpl->invert_fsync;
+	cfg->bclk_master = tpl->bclk_master;
+	cfg->fsync_master = tpl->fsync_master;
+	cfg->mclk_direction = tpl->mclk_direction;
+	cfg->reserved = tpl->reserved;
+	cfg->mclk_rate = tpl->mclk_rate;
+	cfg->bclk_rate = tpl->bclk_rate;
+	cfg->fsync_rate = tpl->fsync_rate;
+
+	cfg->tdm_slots = tpl->tdm_slots;
+	cfg->tdm_slot_width = tpl->tdm_slot_width;
+	cfg->tx_slots = tpl->tx_slots;
+	cfg->rx_slots = tpl->rx_slots;
+
+	if (cfg->tx_channels > SND_SOC_TPLG_MAX_CHAN
+		|| cfg->rx_channels > SND_SOC_TPLG_MAX_CHAN)
+		return -EINVAL;
+
+	cfg->tx_channels = tpl->tx_channels;
+	for (i = 0; i < cfg->tx_channels; i++)
+		cfg->tx_chanmap[i] = tpl->tx_chanmap[i];
+
+	cfg->rx_channels = tpl->rx_channels;
+	for (i = 0; i < cfg->rx_channels; i++)
+		cfg->rx_chanmap[i] = tpl->rx_chanmap[i];
+
+	return 0;
+}
+
 /* Add a physical DAI link element from C API */
 int tplg_add_link_object(snd_tplg_t *tplg, snd_tplg_obj_template_t *t)
 {
@@ -771,5 +808,12 @@ int tplg_add_link_object(snd_tplg_t *tplg, snd_tplg_obj_template_t *t)
 	for (i = 0; i < link->num_streams; i++)
 		tplg_add_stream_object(&link->stream[i], &link_tpl->stream[i]);
 
+	/* HW configs */
+	if (link_tpl->num_hw_configs > SND_SOC_TPLG_HW_CONFIG_MAX)
+		return -EINVAL;
+	link->num_hw_configs = link_tpl->num_hw_configs;
+	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]);
 	return 0;
 }