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ASoC: soc-cache: Add trace event for snd_soc_cache_sync()

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This patch makes it easy to see when the syncing process begins and
ends.  You can also enable the snd_soc_reg_write tracepoint to see
which registers are being synced.

Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Dimitris Papastamos
2011-01-21 15:29:02 +00:00
committed by Mark Brown
parent 67b22517d8
commit c358e640a6
2 changed files with 35 additions and 0 deletions
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10
sound/soc/soc-cache.c
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@@ -18,6 +18,8 @@
#include <linux/bitmap.h>
#include <linux/rbtree.h>
#include <trace/events/asoc.h>
static unsigned int snd_soc_4_12_read(struct snd_soc_codec *codec,
unsigned int reg)
{
@@ -1601,18 +1603,26 @@ EXPORT_SYMBOL_GPL(snd_soc_cache_write);
int snd_soc_cache_sync(struct snd_soc_codec *codec)
{
int ret;
const char *name;
if (!codec->cache_sync) {
return 0;
}
if (codec->cache_ops->name)
name = codec->cache_ops->name;
else
name = "unknown";
if (codec->cache_ops && codec->cache_ops->sync) {
if (codec->cache_ops->name)
dev_dbg(codec->dev, "Syncing %s cache for %s codec\n",
codec->cache_ops->name, codec->name);
trace_snd_soc_cache_sync(codec, name, "start");
ret = codec->cache_ops->sync(codec);
if (!ret)
codec->cache_sync = 0;
trace_snd_soc_cache_sync(codec, name, "end");
return ret;
}