ASoC: compress: add config item for soc-compress to make it compiled only when needed

We don't always need soc-compress in soc, here add a config item
SND_SOC_COMPRESS, when nobody select it, the soc-compress will
not be compiled.

Here also change Kconfig to 'select SND_SOC_COMPRESS' for drivers
that needed soc-compress.

Signed-off-by: Jie Yang <yang.jie@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 10 insertions, 2 deletions

diff --git a/sound/soc/soc-compress.c b/sound/soc/soc-compress.c
index 025c38fbe3c0..12a9820feac1 100644
--- a/sound/soc/soc-compress.c
+++ b/sound/soc/soc-compress.c
@@ -612,8 +612,15 @@ static struct snd_compr_ops soc_compr_dyn_ops = {
 	.get_codec_caps = soc_compr_get_codec_caps
 };
 
-/* create a new compress */
-int soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num)
+/**
+ * snd_soc_new_compress - create a new compress.
+ *
+ * @rtd: The runtime for which we will create compress
+ * @num: the device index number (zero based - shared with normal PCMs)
+ *
+ * Return: 0 for success, else error.
+ */
+int snd_soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num)
 {
 	struct snd_soc_codec *codec = rtd->codec;
 	struct snd_soc_platform *platform = rtd->platform;
@@ -703,3 +710,4 @@ compr_err:
 	kfree(compr);
 	return ret;
 }
+EXPORT_SYMBOL_GPL(snd_soc_new_compress);