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authorLars-Peter Clausen <lars@metafoo.de>2014-11-18 19:45:52 +0100
committerMark Brown <broonie@kernel.org>2014-11-19 10:46:03 +0000
commit20feb881988cdf5f53304c355ae8ee3bf82e80ec (patch)
tree195f81489bd8935cd1103d469b068c5181562bba /include/sound
parentf114040e3ea6e07372334ade75d1ee0775c355e1 (diff)
downloadlinux-20feb881988cdf5f53304c355ae8ee3bf82e80ec.tar.bz2
ASoC: Add helper functions for deferred regmap setup
Some drivers (most notably the AC'97 drivers) do not have access to their regmap struct when the component/codec is registered. For those drivers the automatic regmap setup will not work and needs to be done manually, typically from the component/CODEC drivers probe callback. This patch adds a set of helper function to handle deferred regmap initialization as well as early regmap tear-down. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/sound')
-rw-r--r--include/sound/soc.h35
1 files changed, 35 insertions, 0 deletions
diff --git a/include/sound/soc.h b/include/sound/soc.h
index 7ba7130037a0..342b43b3799e 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -1277,6 +1277,41 @@ void snd_soc_component_async_complete(struct snd_soc_component *component);
int snd_soc_component_test_bits(struct snd_soc_component *component,
unsigned int reg, unsigned int mask, unsigned int value);
+void snd_soc_component_init_regmap(struct snd_soc_component *component,
+ struct regmap *regmap);
+void snd_soc_component_exit_regmap(struct snd_soc_component *component);
+
+/**
+ * snd_soc_codec_init_regmap() - Initialize regmap instance for the CODEC
+ * @codec: The CODEC for which to initialize the regmap instance
+ * @regmap: The regmap instance that should be used by the CODEC
+ *
+ * This function allows deferred assignment of the regmap instance that is
+ * associated with the CODEC. Only use this if the regmap instance is not yet
+ * ready when the CODEC is registered. The function must also be called before
+ * the first IO attempt of the CODEC.
+ */
+static inline void snd_soc_codec_init_regmap(struct snd_soc_codec *codec,
+ struct regmap *regmap)
+{
+ snd_soc_component_init_regmap(&codec->component, regmap);
+}
+
+/**
+ * snd_soc_codec_exit_regmap() - De-initialize regmap instance for the CODEC
+ * @codec: The CODEC for which to de-initialize the regmap instance
+ *
+ * Calls regmap_exit() on the regmap instance associated to the CODEC and
+ * removes the regmap instance from the CODEC.
+ *
+ * This function should only be used if snd_soc_codec_init_regmap() was used to
+ * initialize the regmap instance.
+ */
+static inline void snd_soc_codec_exit_regmap(struct snd_soc_codec *codec)
+{
+ snd_soc_component_exit_regmap(&codec->component);
+}
+
/* device driver data */
static inline void snd_soc_card_set_drvdata(struct snd_soc_card *card,