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authorMark Brown <broonie@linaro.org>2013-06-26 12:45:59 +0100
committerMark Brown <broonie@linaro.org>2013-06-27 09:48:42 +0100
commitb047e1cce8fe32475ab61846772943a5e4c0a908 (patch)
tree9d04d8101d161b96f96c2e2e5bd03900011828ec /sound/soc/tegra
parentb49dff8cb61cd4715991612e2eb6905b73a0be78 (diff)
downloadlinux-b047e1cce8fe32475ab61846772943a5e4c0a908.tar.bz2
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/tegra')
-rw-r--r--sound/soc/tegra/tegra20_ac97.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/sound/soc/tegra/tegra20_ac97.c b/sound/soc/tegra/tegra20_ac97.c
index 48037f784a86..f52eab6d2231 100644
--- a/sound/soc/tegra/tegra20_ac97.c
+++ b/sound/soc/tegra/tegra20_ac97.c
@@ -142,13 +142,12 @@ static void tegra20_ac97_codec_write(struct snd_ac97 *ac97_snd,
} while (!time_after(jiffies, timeout));
}
-struct snd_ac97_bus_ops soc_ac97_ops = {
+static struct snd_ac97_bus_ops tegra20_ac97_ops = {
.read = tegra20_ac97_codec_read,
.write = tegra20_ac97_codec_write,
.reset = tegra20_ac97_codec_reset,
.warm_reset = tegra20_ac97_codec_warm_reset,
};
-EXPORT_SYMBOL_GPL(soc_ac97_ops);
static inline void tegra20_ac97_start_playback(struct tegra20_ac97 *ac97)
{
@@ -409,6 +408,12 @@ static int tegra20_ac97_platform_probe(struct platform_device *pdev)
goto err_asoc_utils_fini;
}
+ ret = snd_soc_set_ac97_ops(&tegra20_ac97_ops);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to set AC'97 ops: %d\n", ret);
+ goto err_asoc_utils_fini;
+ }
+
ret = snd_soc_register_component(&pdev->dev, &tegra20_ac97_component,
&tegra20_ac97_dai, 1);
if (ret) {
@@ -436,6 +441,7 @@ err_asoc_utils_fini:
tegra_asoc_utils_fini(&ac97->util_data);
err_clk_put:
err:
+ snd_soc_set_ac97_ops(NULL);
return ret;
}
@@ -450,6 +456,8 @@ static int tegra20_ac97_platform_remove(struct platform_device *pdev)
clk_disable_unprepare(ac97->clk_ac97);
+ snd_soc_set_ac97_ops(NULL);
+
return 0;
}