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/codecs/wm9705.c b/sound/soc/codecs/wm9705.c
index a5fc61d..70ce6793 100644
--- a/sound/soc/codecs/wm9705.c
+++ b/sound/soc/codecs/wm9705.c
@@ -209,7 +209,7 @@
case AC97_RESET:
case AC97_VENDOR_ID1:
case AC97_VENDOR_ID2:
- return soc_ac97_ops.read(codec->ac97, reg);
+ return soc_ac97_ops->read(codec->ac97, reg);
default:
reg = reg >> 1;
@@ -225,7 +225,7 @@
{
u16 *cache = codec->reg_cache;
- soc_ac97_ops.write(codec->ac97, reg, val);
+ soc_ac97_ops->write(codec->ac97, reg, val);
reg = reg >> 1;
if (reg < (ARRAY_SIZE(wm9705_reg)))
cache[reg] = val;
@@ -294,8 +294,8 @@
static int wm9705_reset(struct snd_soc_codec *codec)
{
- if (soc_ac97_ops.reset) {
- soc_ac97_ops.reset(codec->ac97);
+ if (soc_ac97_ops->reset) {
+ soc_ac97_ops->reset(codec->ac97);
if (ac97_read(codec, 0) == wm9705_reg[0])
return 0; /* Success */
}
@@ -306,7 +306,7 @@
#ifdef CONFIG_PM
static int wm9705_soc_suspend(struct snd_soc_codec *codec)
{
- soc_ac97_ops.write(codec->ac97, AC97_POWERDOWN, 0xffff);
+ soc_ac97_ops->write(codec->ac97, AC97_POWERDOWN, 0xffff);
return 0;
}
@@ -323,7 +323,7 @@
}
for (i = 2; i < ARRAY_SIZE(wm9705_reg) << 1; i += 2) {
- soc_ac97_ops.write(codec->ac97, i, cache[i>>1]);
+ soc_ac97_ops->write(codec->ac97, i, cache[i>>1]);
}
return 0;
@@ -337,7 +337,7 @@
{
int ret = 0;
- ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0);
+ ret = snd_soc_new_ac97_codec(codec, soc_ac97_ops, 0);
if (ret < 0) {
printk(KERN_ERR "wm9705: failed to register AC97 codec\n");
return ret;