[alsa-devel] [PATCH] ASoC: soc-cache: Allow codec->cache_bypass to be used with snd_soc_hw_bulk_write_raw()
dp at opensource.wolfsonmicro.com
Thu May 5 15:18:11 CEST 2011
If we specifically want to write a block of data to the hw bypassing the
cache, then allow this to happen inside snd_soc_hw_bulk_write_raw().
Signed-off-by: Dimitris Papastamos <dp at opensource.wolfsonmicro.com>
sound/soc/soc-cache.c | 11 ++++++-----
1 files changed, 6 insertions(+), 5 deletions(-)
diff --git a/sound/soc/soc-cache.c b/sound/soc/soc-cache.c
index a217db2..687beec 100644
@@ -404,12 +404,13 @@ static int snd_soc_hw_bulk_write_raw(struct snd_soc_codec *codec, unsigned int r
- /* Ensure that the base register is volatile. Subsequently
- * any other register that is touched by this routine should be
- * volatile as well to ensure that we don't get out of sync with
- * the cache.
+ /* To ensure that we don't get out of sync with the cache, check
+ * whether the base register is volatile or if we've directly asked
+ * to bypass the cache. Out of bounds registers are considered
+ * volatile.
- if (!snd_soc_codec_volatile_register(codec, reg)
+ if (!codec->cache_bypass
+ && !snd_soc_codec_volatile_register(codec, reg)
&& reg < codec->driver->reg_cache_size)
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