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authorMark Brown <broonie@linaro.org>2013-06-26 15:45:59 +0400
committerMark Brown <broonie@linaro.org>2013-06-27 12:48:42 +0400
commitb047e1cce8fe32475ab61846772943a5e4c0a908 (patch)
tree9d04d8101d161b96f96c2e2e5bd03900011828ec /sound/soc/nuc900
parentb49dff8cb61cd4715991612e2eb6905b73a0be78 (diff)
downloadlinux-b047e1cce8fe32475ab61846772943a5e4c0a908.tar.xz
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>
Diffstat (limited to 'sound/soc/nuc900')
-rw-r--r--sound/soc/nuc900/nuc900-ac97.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/sound/soc/nuc900/nuc900-ac97.c b/sound/soc/nuc900/nuc900-ac97.c
index 8dea4c1fd997..f4c2417a8730 100644
--- a/sound/soc/nuc900/nuc900-ac97.c
+++ b/sound/soc/nuc900/nuc900-ac97.c
@@ -197,13 +197,12 @@ static void nuc900_ac97_cold_reset(struct snd_ac97 *ac97)
}
/* AC97 controller operations */
-struct snd_ac97_bus_ops soc_ac97_ops = {
+static struct snd_ac97_bus_ops nuc900_ac97_ops = {
.read = nuc900_ac97_read,
.write = nuc900_ac97_write,
.reset = nuc900_ac97_cold_reset,
.warm_reset = nuc900_ac97_warm_reset,
-}
-EXPORT_SYMBOL_GPL(soc_ac97_ops);
+};
static int nuc900_ac97_trigger(struct snd_pcm_substream *substream,
int cmd, struct snd_soc_dai *dai)
@@ -356,6 +355,10 @@ static int nuc900_ac97_drvprobe(struct platform_device *pdev)
nuc900_ac97_data = nuc900_audio;
+ ret = snd_soc_set_ac97_ops(&nuc900_ac97_ops);
+ if (ret)
+ goto out;
+
ret = snd_soc_register_component(&pdev->dev, &nuc900_ac97_component,
&nuc900_ac97_dai, 1);
if (ret)
@@ -367,6 +370,7 @@ static int nuc900_ac97_drvprobe(struct platform_device *pdev)
return 0;
out:
+ snd_soc_set_ac97_ops(NULL);
return ret;
}
@@ -375,6 +379,7 @@ static int nuc900_ac97_drvremove(struct platform_device *pdev)
snd_soc_unregister_component(&pdev->dev);
nuc900_ac97_data = NULL;
+ snd_soc_set_ac97_ops(NULL);
return 0;
}