From: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
Current struct snd_soc_dai_link is supporting multicodec,
and it is supporting legacy style of
codec_name
codec_of_node
code_dai_name
This is handled as single entry of multicodec.
Now, only CPU is not yet supporting snd_soc_dai_link_component style.
If we could support it for CPU, we can switch to new style for
all CPU/Codec/Platform, and remove legacy code from ALSA SoC.
It is mainly used for Multi-CPU support, but no plan so far.
I hope it will be support in the future.
This patch is initial support for snd_soc_dai_link_component for CPU
ahead of time
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
---
include/sound/soc.h | 5 ++++
sound/soc/soc-core.c | 66 ++++++++++++++++++++++++++++++++++++++++++++--------
2 files changed, 61 insertions(+), 10 deletions(-)
diff --git a/include/sound/soc.h b/include/sound/soc.h
index abd3aca..213187e 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -906,6 +906,10 @@ struct snd_soc_dai_link {
* only, which only works well when that device exposes a single DAI.
*/
const char *cpu_dai_name;
+
+ struct snd_soc_dai_link_component *cpus;
+ unsigned int num_cpus;
+
/*
* You MUST specify the link's codec, either by device name, or by
* DT/OF node, but not both.
@@ -991,6 +995,7 @@ struct snd_soc_dai_link {
* drivers should not modify this value.
*/
unsigned int legacy_platform:1;
+ unsigned int legacy_cpu:1;
struct list_head list; /* DAI link list of the soc card */
struct snd_soc_dobj dobj; /* For topology */
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 07a5851..b782f19 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -871,7 +871,6 @@ static int soc_bind_dai_link(struct snd_soc_card *card,
{
struct snd_soc_pcm_runtime *rtd;
struct snd_soc_dai_link_component *codecs;
- struct snd_soc_dai_link_component cpu_dai_component;
struct snd_soc_component *component;
struct snd_soc_dai **codec_dais;
int i;
@@ -891,13 +890,11 @@ static int soc_bind_dai_link(struct snd_soc_card *card,
if (!rtd)
return -ENOMEM;
- cpu_dai_component.name = dai_link->cpu_name;
- cpu_dai_component.of_node = dai_link->cpu_of_node;
- cpu_dai_component.dai_name = dai_link->cpu_dai_name;
- rtd->cpu_dai = snd_soc_find_dai(&cpu_dai_component);
+ /* FIXME: we need multi CPU support in the future */
+ rtd->cpu_dai = snd_soc_find_dai(dai_link->cpus);
if (!rtd->cpu_dai) {
dev_info(card->dev, "ASoC: CPU DAI %s not registered\n",
- dai_link->cpu_dai_name);
+ dai_link->cpus->dai_name);
goto _err_defer;
}
snd_soc_rtdcom_add(rtd, rtd->cpu_dai->component);
@@ -1032,6 +1029,41 @@ static void soc_remove_dai_links(struct snd_soc_card *card)
}
}
+static int snd_soc_init_cpu(struct snd_soc_card *card,
+ struct snd_soc_dai_link *dai_link)
+{
+ struct snd_soc_dai_link_component *cpu = dai_link->cpus;
+
+ /*
+ * FIXME
+ *
+ * this function should be removed in the future
+ */
+ /* convert Legacy platform link */
+ if (!cpu || dai_link->legacy_cpu) {
+ cpu = devm_kzalloc(card->dev,
+ sizeof(struct snd_soc_dai_link_component),
+ GFP_KERNEL);
+ if (!cpu)
+ return -ENOMEM;
+
+ dai_link->cpus = cpu;
+ dai_link->num_cpus = 1;
+ dai_link->legacy_cpu = 1;
+
+ cpu->name = dai_link->cpu_name;
+ cpu->of_node = dai_link->cpu_of_node;
+ cpu->dai_name = dai_link->cpu_dai_name;
+ }
+
+ if (!dai_link->cpus) {
+ dev_err(card->dev, "ASoC: DAI link has no CPUs\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
static int snd_soc_init_platform(struct snd_soc_card *card,
struct snd_soc_dai_link *dai_link)
{
@@ -1099,6 +1131,12 @@ static int soc_init_dai_link(struct snd_soc_card *card,
int i, ret;
struct snd_soc_dai_link_component *codec;
+ ret = snd_soc_init_cpu(card, link);
+ if (ret) {
+ dev_err(card->dev, "ASoC: failed to init cpu\n");
+ return ret;
+ }
+
ret = snd_soc_init_platform(card, link);
if (ret) {
dev_err(card->dev, "ASoC: failed to init multiplatform\n");
@@ -1156,12 +1194,20 @@ static int soc_init_dai_link(struct snd_soc_card *card,
if (!soc_find_component(link->platforms->of_node, link->platforms->name))
return -EPROBE_DEFER;
+ /* FIXME */
+ if (link->num_cpus > 1) {
+ dev_err(card->dev,
+ "ASoC: multi cpu is not yet supported %s\n",
+ link->name);
+ return -EINVAL;
+ }
+
/*
* CPU device may be specified by either name or OF node, but
* can be left unspecified, and will be matched based on DAI
* name alone..
*/
- if (link->cpu_name && link->cpu_of_node) {
+ if (link->cpus->name && link->cpus->of_node) {
dev_err(card->dev,
"ASoC: Neither/both cpu name/of_node are set for %s\n",
link->name);
@@ -1172,15 +1218,15 @@ static int soc_init_dai_link(struct snd_soc_card *card,
* Defer card registartion if cpu dai component is not added to
* component list.
*/
- if (!soc_find_component(link->cpu_of_node, link->cpu_name))
+ if (!soc_find_component(link->cpus->of_node, link->cpus->name))
return -EPROBE_DEFER;
/*
* At least one of CPU DAI name or CPU device name/node must be
* specified
*/
- if (!link->cpu_dai_name &&
- !(link->cpu_name || link->cpu_of_node)) {
+ if (!link->cpus->dai_name &&
+ !(link->cpus->name || link->cpus->of_node)) {
dev_err(card->dev,
"ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
link->name);
--
2.7.4
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