ASoC: soc-cache: Introduce raw bulk write support

As it has become more common to have to write firmware or similar
large chunks of data to the hardware, add a function to perform
raw bulk writes that bypass the cache.  This only handles volatile
registers as we should avoid getting out of sync with the actual
cache.

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, 3 insertions, 0 deletions

diff --git a/include/sound/soc.h b/include/sound/soc.h
index bfa4836ea107..2f2a51fe78e9 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -543,6 +543,7 @@ struct snd_soc_codec {
         unsigned int (*hw_read)(struct snd_soc_codec *, unsigned int);
         unsigned int (*read)(struct snd_soc_codec *, unsigned int);
         int (*write)(struct snd_soc_codec *, unsigned int, unsigned int);
+        int (*bulk_write_raw)(struct snd_soc_codec *, unsigned int, const void *, size_t);
         void *reg_cache;
         const void *reg_def_copy;
         const struct snd_soc_cache_ops *cache_ops;
@@ -814,6 +815,8 @@ struct soc_enum {
 unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg);
 unsigned int snd_soc_write(struct snd_soc_codec *codec,
                            unsigned int reg, unsigned int val);
+unsigned int snd_soc_bulk_write_raw(struct snd_soc_codec *codec,
+                                    unsigned int reg, const void *data, size_t len);
 
 /* device driver data */