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ASoC: soc-core: support dai_link with platforms_num != 1

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Add support platforms_num != 1 in dai_link. Initially, the main purpose of
this change was to make the platform optional in the dai_link, instead of
inserting the dummy platform driver.

This particular case had just been solved by Kuninori Morimoto with
commit 1d76898928 ("ASoC: soc-core: allow no Platform on dai_link").

However, this change may still be useful for those who need multiple
platform components on a single dai_link (it solves one of the FIXME
note in soc-core)

Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Jerome Brunet 2019-06-27 14:13:50 +02:00 committed by Mark Brown
parent af18b13fed
commit 3461473998
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 30 additions and 35 deletions
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6
include/sound/soc.h
View File

@ -997,6 +997,12 @@ struct snd_soc_dai_link {
((i) < link->num_codecs) && ((codec) = &link->codecs[i]); \
(i)++)
#define for_each_link_platforms(link, i, platform) \
for ((i) = 0; \
((i) < link->num_platforms) && \
((platform) = &link->platforms[i]); \
(i)++)
/*
* Sample 1 : Single CPU/Codec/Platform
*

59
sound/soc/soc-core.c
View File

@ -896,7 +896,7 @@ static int soc_bind_dai_link(struct snd_soc_card *card,
struct snd_soc_dai_link *dai_link)
{
struct snd_soc_pcm_runtime *rtd;
struct snd_soc_dai_link_component *codecs;
struct snd_soc_dai_link_component *codec, *platform;
struct snd_soc_component *component;
int i;
@ -926,13 +926,14 @@ static int soc_bind_dai_link(struct snd_soc_card *card,
/* Find CODEC from registered CODECs */
rtd->num_codecs = dai_link->num_codecs;
for_each_link_codecs(dai_link, i, codecs) {
rtd->codec_dais[i] = snd_soc_find_dai(codecs);
for_each_link_codecs(dai_link, i, codec) {
rtd->codec_dais[i] = snd_soc_find_dai(codec);
if (!rtd->codec_dais[i]) {
dev_info(card->dev, "ASoC: CODEC DAI %s not registered\n",
codecs->dai_name);
codec->dai_name);
goto _err_defer;
}
snd_soc_rtdcom_add(rtd, rtd->codec_dais[i]->component);
}
@ -940,12 +941,13 @@ static int soc_bind_dai_link(struct snd_soc_card *card,
rtd->codec_dai = rtd->codec_dais[0];
/* Find PLATFORM from registered PLATFORMs */
for_each_component(component) {
if (!snd_soc_is_matching_component(dai_link->platforms,
component))
continue;
for_each_link_platforms(dai_link, i, platform) {
for_each_component(component) {
if (!snd_soc_is_matching_component(platform, component))
continue;
snd_soc_rtdcom_add(rtd, component);
snd_soc_rtdcom_add(rtd, component);
}
}
soc_add_pcm_runtime(card, rtd);
@ -1058,15 +1060,14 @@ static int soc_init_dai_link(struct snd_soc_card *card,
struct snd_soc_dai_link *link)
{
int i;
struct snd_soc_dai_link_component *codec;
struct snd_soc_dai_link_component *codec, *platform;
for_each_link_codecs(link, i, codec) {
/*
* Codec must be specified by 1 of name or OF node,
* not both or neither.
*/
if (!!codec->name ==
!!codec->of_node) {
if (!!codec->name == !!codec->of_node) {
dev_err(card->dev, "ASoC: Neither/both codec name/of_node are set for %s\n",
link->name);
return -EINVAL;
@ -1087,36 +1088,24 @@ static int soc_init_dai_link(struct snd_soc_card *card,
return -EPROBE_DEFER;
}
/*
* Platform may be specified by either name or OF node,
* or no Platform.
*
* FIXME
*
* We need multi-platform support
*/
if (link->num_platforms > 0) {
if (link->num_platforms > 1) {
for_each_link_platforms(link, i, platform) {
/*
* Platform may be specified by either name or OF node, but it
* can be left unspecified, then no components will be inserted
* in the rtdcom list
*/
if (!!platform->name == !!platform->of_node) {
dev_err(card->dev,
"ASoC: multi platform is not yet supported %s\n",
link->name);
return -EINVAL;
}
if (link->platforms->name && link->platforms->of_node) {
dev_err(card->dev,
"ASoC: Both platform name/of_node are set for %s\n",
"ASoC: Neither/both platform name/of_node are set for %s\n",
link->name);
return -EINVAL;
}
/*
* Defer card registartion if platform dai component is not
* added to component list.
* Defer card registration if platform component is not added to
* component list.
*/
if ((link->platforms->of_node || link->platforms->name) &&
!soc_find_component(link->platforms))
if (!soc_find_component(platform))
return -EPROBE_DEFER;
}