ASoC: soc-core: Generalize snd_soc_prefix_map and rename to snd_soc_codec_conf

The snd_soc_codec_conf struct now holds codec specific configuration
information.

A new configuration option has been added to allow machine drivers to
override the compression type set by the codec driver.

In the absence of providing an snd_soc_codec_conf struct or when providing
one but not setting the compress_type member to anything, the one supplied
by the codec driver will be used instead.  In all other cases the one
set in the snd_soc_codec_conf struct takes effect.
Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
Acked-by: Jarkko Nikula <jhnikula@gmail.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

include/sound/soc.h

@@ -581,9 +581,20 @@ struct snd_soc_dai_link {
 	struct snd_soc_ops *ops;
 };
 
-struct snd_soc_prefix_map {
+struct snd_soc_codec_conf {
 	const char *dev_name;
+
+	/*
+	 * optional map of kcontrol, widget and path name prefixes that are
+	 * associated per device
+	 */
 	const char *name_prefix;
+
+	/*
+	 * set this to the desired compression type if you want to
+	 * override the one supplied in codec->driver->compress_type
+	 */
+	enum snd_soc_compress_type compress_type;
 };
 
 struct snd_soc_aux_dev {
@@ -628,12 +639,9 @@ struct snd_soc_card {
 	struct snd_soc_pcm_runtime *rtd;
 	int num_rtd;
 
-	/*
-	 * optional map of kcontrol, widget and path name prefixes that are
-	 * associated per device
-	 */
-	struct snd_soc_prefix_map *prefix_map;
-	int num_prefixes;
+	/* optional codec specific configuration */
+	struct snd_soc_codec_conf *codec_conf;
+	int num_configs;
 
 	/*
 	 * optional auxiliary devices such as amplifiers or codecs with DAI

sound/soc/soc-core.c

@@ -1401,11 +1401,11 @@ static void soc_set_name_prefix(struct snd_soc_card *card,
 {
 	int i;
 
-	if (card->prefix_map == NULL)
+	if (card->codec_conf == NULL)
 		return;
 
-	for (i = 0; i < card->num_prefixes; i++) {
-		struct snd_soc_prefix_map *map = &card->prefix_map[i];
+	for (i = 0; i < card->num_configs; i++) {
+		struct snd_soc_codec_conf *map = &card->codec_conf[i];
 		if (map->dev_name && !strcmp(codec->name, map->dev_name)) {
 			codec->name_prefix = map->name_prefix;
 			break;