[alsa-devel] Applied "ASoC: simple-card: cleanup DAI link loop method - step1" to the asoc tree
Mark Brown
broonie at kernel.org
Fri Dec 21 19:15:06 CET 2018
The patch
ASoC: simple-card: cleanup DAI link loop method - step1
has been applied to the asoc tree at
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git
All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.
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and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.
If any updates are required or you are submitting further changes they
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patches will not be replaced.
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to this mail.
Thanks,
Mark
>From b698b1ec3a6d3583b9b0e2eaad2a97e58f9c452c Mon Sep 17 00:00:00 2001
From: Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>
Date: Thu, 20 Dec 2018 10:47:23 +0900
Subject: [PATCH] ASoC: simple-card: cleanup DAI link loop method - step1
Current simple-card is parsing DAI link for both "normal sound" and
"DPCM sound". On this driver, it needs to count and parse
DAIs/Links/Codec Conf from each links.
Then, counting/parsing link loop are very similar, but using different
implementation. Because of this background, the link loop code is very
mysterious. Mystery code will be trouble in the future.
This patch adds/modifies counting and parsing function for
"normal sound" and "DPCM sound", and call it from link loop.
This is prepare for cleanup DAI link loop method.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>
Signed-off-by: Mark Brown <broonie at kernel.org>
---
sound/soc/generic/simple-card.c | 210 +++++++++++++++++++++-----------
1 file changed, 137 insertions(+), 73 deletions(-)
diff --git a/sound/soc/generic/simple-card.c b/sound/soc/generic/simple-card.c
index 3820ad719059..4987db667165 100644
--- a/sound/soc/generic/simple-card.c
+++ b/sound/soc/generic/simple-card.c
@@ -187,32 +187,43 @@ static void asoc_simple_card_get_conversion(struct device *dev,
of_node_put(node);
}
-static int asoc_simple_card_dai_link_of_dpcm(struct device_node *top,
- struct device_node *node,
+static int asoc_simple_card_dai_link_of_dpcm(struct simple_card_data *priv,
struct device_node *np,
struct device_node *codec,
- struct simple_card_data *priv,
struct link_info *li,
- bool is_top_level_node)
+ bool is_top)
{
struct device *dev = simple_priv_to_dev(priv);
struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link);
struct simple_dai_props *dai_props = simple_priv_to_props(priv, li->link);
struct asoc_simple_dai *dai;
struct snd_soc_dai_link_component *codecs = dai_link->codecs;
+ struct device_node *top = dev->of_node;
+ struct device_node *node = of_get_parent(np);
char prop[128];
char *prefix = "";
int ret;
+ /*
+ * |CPU |Codec : turn
+ * CPU |Pass |return
+ * Codec |return|Pass
+ * np
+ */
+ if (li->cpu == (np == codec))
+ return 0;
+
dev_dbg(dev, "link_of DPCM (%pOF)\n", np);
li->link++;
+ of_node_put(node);
+
/* For single DAI link & old style of DT node */
- if (is_top_level_node)
+ if (is_top)
prefix = PREFIX;
- if (np != codec) {
+ if (li->cpu) {
int is_single_links = 0;
/* BE is dummy */
@@ -312,53 +323,47 @@ static int asoc_simple_card_dai_link_of_dpcm(struct device_node *top,
return 0;
}
-static int asoc_simple_card_dai_link_of(struct device_node *top,
- struct device_node *node,
- struct simple_card_data *priv,
+static int asoc_simple_card_dai_link_of(struct simple_card_data *priv,
+ struct device_node *np,
+ struct device_node *codec,
struct link_info *li,
- bool is_top_level_node)
+ bool is_top)
{
struct device *dev = simple_priv_to_dev(priv);
struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link);
struct simple_dai_props *dai_props = simple_priv_to_props(priv, li->link);
struct asoc_simple_dai *cpu_dai;
struct asoc_simple_dai *codec_dai;
+ struct device_node *top = dev->of_node;
struct device_node *cpu = NULL;
+ struct device_node *node = NULL;
struct device_node *plat = NULL;
- struct device_node *codec = NULL;
char prop[128];
char *prefix = "";
int ret, single_cpu;
+ /*
+ * |CPU |Codec : turn
+ * CPU |Pass |return
+ * Codec |return|return
+ * np
+ */
+ if (!li->cpu || np == codec)
+ return 0;
+
+ cpu = np;
+ node = of_get_parent(np);
li->link++;
dev_dbg(dev, "link_of (%pOF)\n", node);
/* For single DAI link & old style of DT node */
- if (is_top_level_node)
+ if (is_top)
prefix = PREFIX;
- snprintf(prop, sizeof(prop), "%scpu", prefix);
- cpu = of_get_child_by_name(node, prop);
-
- if (!cpu) {
- ret = -EINVAL;
- dev_err(dev, "%s: Can't find %s DT node\n", __func__, prop);
- goto dai_link_of_err;
- }
-
snprintf(prop, sizeof(prop), "%splat", prefix);
plat = of_get_child_by_name(node, prop);
- snprintf(prop, sizeof(prop), "%scodec", prefix);
- codec = of_get_child_by_name(node, prop);
-
- if (!codec) {
- ret = -EINVAL;
- dev_err(dev, "%s: Can't find %s DT node\n", __func__, prop);
- goto dai_link_of_err;
- }
-
cpu_dai =
dai_props->cpu_dai = &priv->dais[li->dais++];
codec_dai =
@@ -421,8 +426,7 @@ static int asoc_simple_card_dai_link_of(struct device_node *top,
asoc_simple_card_canonicalize_cpu(dai_link, single_cpu);
dai_link_of_err:
- of_node_put(cpu);
- of_node_put(codec);
+ of_node_put(node);
return ret;
}
@@ -464,9 +468,6 @@ static int asoc_simple_card_parse_of(struct simple_card_data *priv)
struct device_node *top = dev->of_node;
struct snd_soc_card *card = simple_priv_to_card(priv);
struct device_node *node;
- struct device_node *np;
- struct device_node *codec;
- struct asoc_simple_card_data adata;
struct link_info li;
int ret, loop;
@@ -483,6 +484,10 @@ static int asoc_simple_card_parse_of(struct simple_card_data *priv)
/* Single/Muti DAI link(s) & New style of DT node */
memset(&li, 0, sizeof(li));
+
+ /* FIXME */
+ li.cpu = 1;
+parse_loop:
loop = 1;
node = of_get_child_by_name(top, PREFIX "dai-link");
if (!node) {
@@ -491,37 +496,59 @@ static int asoc_simple_card_parse_of(struct simple_card_data *priv)
}
do {
+ struct asoc_simple_card_data adata;
+ struct device_node *codec;
+ struct device_node *np;
+ int num = of_get_child_count(node);
+ int ret;
+
+ codec = of_get_child_by_name(node, !loop ?
+ PREFIX "codec" : "codec");
+ if (!codec)
+ return -ENODEV;
+
+ of_node_put(codec);
+
memset(&adata, 0, sizeof(adata));
for_each_child_of_node(node, np)
asoc_simple_card_get_conversion(dev, np, &adata);
- /* DPCM */
- if (of_get_child_count(node) > 2 ||
- adata.convert_rate || adata.convert_channels) {
- for_each_child_of_node(node, np) {
- codec = of_get_child_by_name(node,
- loop ? "codec" :
- PREFIX "codec");
- if (!codec)
- return -ENODEV;
-
+ /*
+ * 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;
+ */
+
+ /* loop for all CPU/Codec node */
+ for_each_child_of_node(node, np) {
+ if (num > 2 ||
+ adata.convert_rate || adata.convert_channels) {
ret = asoc_simple_card_dai_link_of_dpcm(
- top, node, np, codec, priv,
- &li, !loop);
+ priv, np, codec, &li, !loop);
+ if (ret < 0)
+ return ret;
+ } else {
+ ret = asoc_simple_card_dai_link_of(
+ priv, np, codec, &li, !loop);
if (ret < 0)
return ret;
}
- } else {
- ret = asoc_simple_card_dai_link_of(
- top, node, priv,
- &li, !loop);
- if (ret < 0)
- return ret;
}
-
node = of_get_next_child(top, node);
} while (loop && node);
+ /* FIXME */
+ li.cpu--;
+ if (li.cpu >= 0)
+ goto parse_loop;
+
ret = asoc_simple_card_parse_card_name(card, PREFIX);
if (ret < 0)
return ret;
@@ -531,12 +558,39 @@ static int asoc_simple_card_parse_of(struct simple_card_data *priv)
return ret;
}
-static void asoc_simple_card_get_dais_count(struct device *dev,
+static int asoc_simple_card_count_noml(struct simple_card_data *priv,
+ struct device_node *np,
+ struct device_node *codec,
+ struct link_info *li, bool is_top)
+{
+ li->dais++; /* CPU or Codec */
+ if (np != codec)
+ li->link++; /* CPU-Codec */
+
+ return 0;
+}
+
+static int asoc_simple_card_count_dpcm(struct simple_card_data *priv,
+ struct device_node *np,
+ struct device_node *codec,
+ struct link_info *li, bool is_top)
+{
+ li->dais++; /* CPU or Codec */
+ li->link++; /* CPU-dummy or dummy-Codec */
+ if (np == codec)
+ li->conf++;
+
+ return 0;
+}
+
+static void asoc_simple_card_get_dais_count(struct simple_card_data *priv,
struct link_info *li)
{
+ struct device *dev = simple_priv_to_dev(priv);
struct device_node *top = dev->of_node;
struct device_node *node;
struct device_node *np;
+ struct device_node *codec;
struct asoc_simple_card_data adata;
int loop;
int num;
@@ -602,18 +656,28 @@ static void asoc_simple_card_get_dais_count(struct device *dev,
}
do {
+ num = of_get_child_count(node);
+
+ codec = of_get_child_by_name(node, !loop ?
+ PREFIX "codec" : "codec");
+ if (!codec)
+ return;
+
+ of_node_put(codec);
+
memset(&adata, 0, sizeof(adata));
for_each_child_of_node(node, np)
asoc_simple_card_get_conversion(dev, np, &adata);
- num = of_get_child_count(node);
- li->dais += num;
- if (num > 2 ||
- adata.convert_rate || adata.convert_channels) {
- li->link += num;
- li->conf++;
- } else {
- li->link++;
+ for_each_child_of_node(node, np) {
+ if (num > 2 ||
+ adata.convert_rate || adata.convert_channels) {
+ asoc_simple_card_count_dpcm(priv, np, codec,
+ li, !loop);
+ } else {
+ asoc_simple_card_count_noml(priv, np, codec,
+ li, !loop);
+ }
}
node = of_get_next_child(top, node);
} while (loop && node);
@@ -653,8 +717,13 @@ static int asoc_simple_card_probe(struct platform_device *pdev)
if (!priv)
return -ENOMEM;
+ card = simple_priv_to_card(priv);
+ card->owner = THIS_MODULE;
+ card->dev = dev;
+ card->probe = asoc_simple_soc_card_probe;
+
memset(&li, 0, sizeof(li));
- asoc_simple_card_get_dais_count(dev, &li);
+ asoc_simple_card_get_dais_count(priv, &li);
if (!li.link || !li.dais)
return -EINVAL;
@@ -677,20 +746,15 @@ static int asoc_simple_card_probe(struct platform_device *pdev)
dai_link[i].platform = &dai_props[i].platform;
}
- priv->dai_props = dai_props;
- priv->dai_link = dai_link;
- priv->dais = dais;
- priv->codec_conf = cconf;
+ priv->dai_props = dai_props;
+ priv->dai_link = dai_link;
+ priv->dais = dais;
+ priv->codec_conf = cconf;
- /* Init snd_soc_card */
- card = simple_priv_to_card(priv);
- card->owner = THIS_MODULE;
- card->dev = dev;
card->dai_link = priv->dai_link;
card->num_links = li.link;
card->codec_conf = cconf;
card->num_configs = li.conf;
- card->probe = asoc_simple_soc_card_probe;
if (np && of_device_is_available(np)) {
--
2.20.1
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