ASoC: Add snd_soc_codec_{readable,writable}_register()

Provide the top level ASoC core functions for indicating whether
a given register is readable or writable.

Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/include/sound/soc.h b/include/sound/soc.h
index e20835753c6b..2720a9f3780b 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -278,6 +278,10 @@ int snd_soc_register_codec(struct device *dev,
 void snd_soc_unregister_codec(struct device *dev);
 int snd_soc_codec_volatile_register(struct snd_soc_codec *codec,
                                     unsigned int reg);
+int snd_soc_codec_readable_register(struct snd_soc_codec *codec,
+                                    unsigned int reg);
+int snd_soc_codec_writable_register(struct snd_soc_codec *codec,
+                                    unsigned int reg);
 int snd_soc_codec_set_cache_io(struct snd_soc_codec *codec,
                                int addr_bits, int data_bits,
                                enum snd_soc_control_type control);