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authorMark Brown <broonie@opensource.wolfsonmicro.com>2008-12-08 20:26:48 +0100
committerMark Brown <broonie@opensource.wolfsonmicro.com>2008-12-09 14:30:05 +0100
commit6b05eda6383d89bffc21da654d148733e7839540 (patch)
tree68c408c35d0ae0d8e065e188ede4f11b73138656 /sound/soc
parentASoC: Initial framework for dynamic card instantiation (diff)
downloadlinux-6b05eda6383d89bffc21da654d148733e7839540.tar.xz
linux-6b05eda6383d89bffc21da654d148733e7839540.zip
ASoC: Wait for non-AC97 codec DAIs before instantiating
This will allow codec drivers to be refactored to allow them to be registered out of line with the ASoC device registration. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc')
-rw-r--r--sound/soc/soc-core.c27
1 files changed, 26 insertions, 1 deletions
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 717db0e6499b..76a89eb65baf 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -788,7 +788,7 @@ static void snd_soc_instantiate_card(struct snd_soc_card *card)
struct snd_soc_codec_device *codec_dev = card->socdev->codec_dev;
struct snd_soc_platform *platform;
struct snd_soc_dai *dai;
- int i, found, ret;
+ int i, found, ret, ac97;
if (card->instantiated)
return;
@@ -805,6 +805,7 @@ static void snd_soc_instantiate_card(struct snd_soc_card *card)
return;
}
+ ac97 = 0;
for (i = 0; i < card->num_links; i++) {
found = 0;
list_for_each_entry(dai, &dai_list, list)
@@ -817,8 +818,32 @@ static void snd_soc_instantiate_card(struct snd_soc_card *card)
card->dai_link[i].cpu_dai->name);
return;
}
+
+ if (card->dai_link[i].cpu_dai->ac97_control)
+ ac97 = 1;
}
+ /* If we have AC97 in the system then don't wait for the
+ * codec. This will need revisiting if we have to handle
+ * systems with mixed AC97 and non-AC97 parts. Only check for
+ * DAIs currently; we can't do this per link since some AC97
+ * codecs have non-AC97 DAIs.
+ */
+ if (!ac97)
+ for (i = 0; i < card->num_links; i++) {
+ found = 0;
+ list_for_each_entry(dai, &dai_list, list)
+ if (card->dai_link[i].codec_dai == dai) {
+ found = 1;
+ break;
+ }
+ if (!found) {
+ dev_dbg(card->dev, "DAI %s not registered\n",
+ card->dai_link[i].codec_dai->name);
+ return;
+ }
+ }
+
/* Note that we do not current check for codec components */
dev_dbg(card->dev, "All components present, instantiating\n");