[PATCH 4/6] ASoC: audio-graph: cleanup graph_for_each_link()
Kuninori Morimoto
kuninori.morimoto.gx at renesas.com
Fri Mar 26 04:26:20 CET 2021
From: Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>
audio-graph checks DT links 2 times. 1st is for counting DAIs / links
to allocating memory, 2nd is for detecting DAIs.
To detecting DAIs as CPU-dummy -> dummy-Codec order when DPCM case,
it uses loops 2 times.
Because of this kind of complex background, it needs to use local
varuable for it, and each call-back functions need to care about it.
Now, 1st and 2nd DT link check are using same order,
thus we can share same code. This patch do it.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>
---
sound/soc/generic/audio-graph-card.c | 129 +++++++++++++--------------
1 file changed, 61 insertions(+), 68 deletions(-)
diff --git a/sound/soc/generic/audio-graph-card.c b/sound/soc/generic/audio-graph-card.c
index 3a967c520b01..ee1d924d68e5 100644
--- a/sound/soc/generic/audio-graph-card.c
+++ b/sound/soc/generic/audio-graph-card.c
@@ -212,8 +212,7 @@ static void graph_parse_mclk_fs(struct device_node *top,
static int graph_dai_link_of_dpcm(struct asoc_simple_priv *priv,
struct device_node *cpu_ep,
struct device_node *codec_ep,
- struct link_info *li,
- int dup_codec)
+ struct link_info *li)
{
struct device *dev = simple_priv_to_dev(priv);
struct snd_soc_card *card = simple_priv_to_card(priv);
@@ -229,18 +228,6 @@ static int graph_dai_link_of_dpcm(struct asoc_simple_priv *priv,
struct snd_soc_dai_link_component *codecs = dai_link->codecs;
int ret;
- /*
- * Codec endpoint can be NULL for pluggable audio HW.
- * Platform DT can populate the Codec endpoint depending on the
- * plugged HW.
- */
- if (!li->cpu && !codec_ep)
- return 0;
-
- /* Do it all CPU endpoint, and 1st Codec endpoint */
- if (!li->cpu && dup_codec)
- return 0;
-
port = of_get_parent(ep);
ports = of_get_parent(port);
node = of_graph_get_port_parent(ep);
@@ -382,10 +369,6 @@ static int graph_dai_link_of(struct asoc_simple_priv *priv,
struct asoc_simple_dai *codec_dai;
int ret, single_cpu;
- /* Do it only CPU turn */
- if (!li->cpu)
- return 0;
-
dev_dbg(dev, "link_of (%pOF)\n", cpu_ep);
li->link++;
@@ -466,7 +449,7 @@ static inline bool parse_as_dpcm_link(struct asoc_simple_priv *priv,
return false;
}
-static int graph_for_each_link(struct asoc_simple_priv *priv,
+static int __graph_for_each_link(struct asoc_simple_priv *priv,
struct link_info *li,
int (*func_noml)(struct asoc_simple_priv *priv,
struct device_node *cpu_ep,
@@ -475,7 +458,7 @@ static int graph_for_each_link(struct asoc_simple_priv *priv,
int (*func_dpcm)(struct asoc_simple_priv *priv,
struct device_node *cpu_ep,
struct device_node *codec_ep,
- struct link_info *li, int dup_codec))
+ struct link_info *li))
{
struct of_phandle_iterator it;
struct device *dev = simple_priv_to_dev(priv);
@@ -486,7 +469,7 @@ static int graph_for_each_link(struct asoc_simple_priv *priv,
struct device_node *codec_port;
struct device_node *codec_port_old = NULL;
struct asoc_simple_data adata;
- int rc, ret;
+ int rc, ret = 0;
/* loop for all listed CPU port */
of_for_each_phandle(&it, rc, node, "dais", NULL, 0) {
@@ -509,12 +492,21 @@ static int graph_for_each_link(struct asoc_simple_priv *priv,
graph_parse_convert(dev, cpu_ep, &adata);
/* check if link requires DPCM parsing */
- if (parse_as_dpcm_link(priv, codec_port, &adata))
- ret = func_dpcm(priv, cpu_ep, codec_ep, li,
- (codec_port_old == codec_port));
+ if (parse_as_dpcm_link(priv, codec_port, &adata)) {
+ /*
+ * Codec endpoint can be NULL for pluggable audio HW.
+ * Platform DT can populate the Codec endpoint depending on the
+ * plugged HW.
+ */
+ /* Do it all CPU endpoint, and 1st Codec endpoint */
+ if (li->cpu ||
+ ((codec_port_old != codec_port) && codec_ep))
+ ret = func_dpcm(priv, cpu_ep, codec_ep, li);
/* else normal sound */
- else
- ret = func_noml(priv, cpu_ep, codec_ep, li);
+ } else {
+ if (li->cpu)
+ ret = func_noml(priv, cpu_ep, codec_ep, li);
+ }
of_node_put(codec_ep);
of_node_put(codec_port);
@@ -529,6 +521,39 @@ static int graph_for_each_link(struct asoc_simple_priv *priv,
return 0;
}
+static int graph_for_each_link(struct asoc_simple_priv *priv,
+ struct link_info *li,
+ int (*func_noml)(struct asoc_simple_priv *priv,
+ struct device_node *cpu_ep,
+ struct device_node *codec_ep,
+ struct link_info *li),
+ int (*func_dpcm)(struct asoc_simple_priv *priv,
+ struct device_node *cpu_ep,
+ struct device_node *codec_ep,
+ struct link_info *li))
+{
+ int ret;
+ /*
+ * Detect all CPU first, and Detect all Codec 2nd.
+ *
+ * In Normal sound case, all DAIs are detected
+ * as "CPU-Codec".
+ *
+ * In DPCM sound case,
+ * all CPUs are detected as "CPU-dummy", and
+ * all Codecs are detected as "dummy-Codec".
+ * To avoid random sub-device numbering,
+ * detect "dummy-Codec" in last;
+ */
+ for (li->cpu = 1; li->cpu >= 0; li->cpu--) {
+ ret = __graph_for_each_link(priv, li, func_noml, func_dpcm);
+ if (ret < 0)
+ break;
+ }
+
+ return ret;
+}
+
static void graph_get_dais_count(struct asoc_simple_priv *priv,
struct link_info *li);
@@ -566,25 +591,11 @@ int audio_graph_parse_of(struct asoc_simple_priv *priv, struct device *dev)
return ret;
memset(&li, 0, sizeof(li));
- for (li.cpu = 1; li.cpu >= 0; li.cpu--) {
- /*
- * Detect all CPU first, and Detect all Codec 2nd.
- *
- * In Normal sound case, all DAIs are detected
- * as "CPU-Codec".
- *
- * In DPCM sound case,
- * all CPUs are detected as "CPU-dummy", and
- * all Codecs are detected as "dummy-Codec".
- * To avoid random sub-device numbering,
- * detect "dummy-Codec" in last;
- */
- ret = graph_for_each_link(priv, &li,
- graph_dai_link_of,
- graph_dai_link_of_dpcm);
- if (ret < 0)
- goto err;
- }
+ ret = graph_for_each_link(priv, &li,
+ graph_dai_link_of,
+ graph_dai_link_of_dpcm);
+ if (ret < 0)
+ goto err;
ret = asoc_simple_parse_card_name(card, NULL);
if (ret < 0)
@@ -617,10 +628,6 @@ static int graph_count_noml(struct asoc_simple_priv *priv,
{
struct device *dev = simple_priv_to_dev(priv);
- /* Do it only CPU turn */
- if (!li->cpu)
- return 0;
-
li->link += 1; /* 1xCPU-Codec */
li->dais += 2; /* 1xCPU + 1xCodec */
@@ -632,27 +639,14 @@ static int graph_count_noml(struct asoc_simple_priv *priv,
static int graph_count_dpcm(struct asoc_simple_priv *priv,
struct device_node *cpu_ep,
struct device_node *codec_ep,
- struct link_info *li,
- int dup_codec)
+ struct link_info *li)
{
struct device *dev = simple_priv_to_dev(priv);
- /*
- * Codec endpoint can be NULL for pluggable audio HW.
- * Platform DT can populate the Codec endpoint depending on the
- * plugged HW.
- */
- if (!li->cpu && !codec_ep)
- return 0;
-
- /* Do it all CPU endpoint, and 1st Codec endpoint */
- if (!li->cpu && dup_codec)
- return 0;
-
if (li->cpu) {
li->link++; /* 1xCPU-dummy */
li->dais++; /* 1xCPU */
- } else if (!dup_codec && codec_ep) {
+ } else {
li->link++; /* 1xdummy-Codec */
li->conf++; /* 1xdummy-Codec */
li->dais++; /* 1xCodec */
@@ -714,10 +708,9 @@ static void graph_get_dais_count(struct asoc_simple_priv *priv,
* => 4 DAIs = 2xCPU + 2xCodec
* => 1 ccnf = 1xdummy-Codec
*/
- for (li->cpu = 1; li->cpu >= 0; li->cpu--)
- graph_for_each_link(priv, li,
- graph_count_noml,
- graph_count_dpcm);
+ graph_for_each_link(priv, li,
+ graph_count_noml,
+ graph_count_dpcm);
dev_dbg(dev, "link %d, dais %d, ccnf %d\n",
li->link, li->dais, li->conf);
}
--
2.25.1
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