ASoC: ac97: Support multi-platform AC'97
Currently we can only have a single platform built in with AC'97 support
due to the use of a global variable to provide the bus operations. Fix
this by making that variable a pointer and having the bus drivers set the
operations prior to registering.
This is not a particularly good or nice approach but it avoids blocking
multiplatform and a real fix involves fixing the fairly deep problems
with AC'97 support - we should be converting it to a real bus.
Acked-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index d56bbea..562d72e 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -2079,6 +2079,22 @@
}
EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec);
+struct snd_ac97_bus_ops *soc_ac97_ops;
+
+int snd_soc_set_ac97_ops(struct snd_ac97_bus_ops *ops)
+{
+ if (ops == soc_ac97_ops)
+ return 0;
+
+ if (soc_ac97_ops && ops)
+ return -EBUSY;
+
+ soc_ac97_ops = ops;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops);
+
/**
* snd_soc_free_ac97_codec - free AC97 codec device
* @codec: audio codec