ASoC: Make cache status available via debugfs

Could just as well live in sysfs but sysfs doesn't have the simple
value export helpers debugfs does.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>

include/sound/soc.h

@@ -493,14 +493,14 @@ struct snd_soc_codec {
 	struct snd_ac97 *ac97;  /* for ad-hoc ac97 devices */
 	unsigned int active;
 	unsigned int cache_bypass:1; /* Suppress access to the cache */
-	unsigned int cache_only:1;  /* Suppress writes to hardware */
-	unsigned int cache_sync:1; /* Cache needs to be synced to hardware */
 	unsigned int suspended:1; /* Codec is in suspend PM state */
 	unsigned int probed:1; /* Codec has been probed */
 	unsigned int ac97_registered:1; /* Codec has been AC97 registered */
 	unsigned int ac97_created:1; /* Codec has been created by SoC */
 	unsigned int sysfs_registered:1; /* codec has been sysfs registered */
 	unsigned int cache_init:1; /* codec cache has been initialized */
+	u32 cache_only;  /* Suppress writes to hardware */
+	u32 cache_sync; /* Cache needs to be synced to hardware */
 
 	/* codec IO */
 	void *control_data; /* codec control (i2c/3wire) data */

sound/soc/soc-core.c

@@ -235,6 +235,11 @@ static void soc_init_codec_debugfs(struct snd_soc_codec *codec)
 		return;
 	}
 
+	debugfs_create_bool("cache_sync", 0444, codec->debugfs_codec_root,
+			    &codec->cache_sync);
+	debugfs_create_bool("cache_only", 0444, codec->debugfs_codec_root,
+			    &codec->cache_only);
+
 	codec->debugfs_reg = debugfs_create_file("codec_reg", 0644,
 						 codec->debugfs_codec_root,
 						 codec, &codec_reg_fops);