ASoC: core - Add platform read and write.

In preparation for ASoC Dynamic PCM (AKA DSP) support.

Allow platform driver to perform IO. Intended for platform DAPM.

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

1 files changed, 8 insertions, 0 deletions

diff --git a/include/sound/soc.h b/include/sound/soc.h
index 6424b10ac29..f30f3fe4a41 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -312,6 +312,10 @@ int snd_soc_default_readable_register(struct snd_soc_codec *codec,
                                       unsigned int reg);
 int snd_soc_default_writable_register(struct snd_soc_codec *codec,
                                       unsigned int reg);
+int snd_soc_platform_read(struct snd_soc_platform *platform,
+                                        unsigned int reg);
+int snd_soc_platform_write(struct snd_soc_platform *platform,
+                                        unsigned int reg, unsigned int val);
 
 /* Utility functions to get clock rates from various things */
 int snd_soc_calc_frame_size(int sample_size, int channels, int tdm_slots);
@@ -658,6 +662,10 @@ struct snd_soc_platform_driver {
         /* probe ordering - for components with runtime dependencies */
         int probe_order;
         int remove_order;
+
+        /* platform IO - used for platform DAPM */
+        unsigned int (*read)(struct snd_soc_platform *, unsigned int);
+        int (*write)(struct snd_soc_platform *, unsigned int, unsigned int);
 };
 
 struct snd_soc_platform {