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ASoC: soc-core: export function to find codec 

Drivers might need to use the ASoC core function to
find out whether a particular codec is already
registered with ALSA core or not. Export the function
so that drivers can use it outside of the file.

Change-Id: I2e4fb191afab9dccf1be3d380f54a81797b2d6e5
Signed-off-by: Yeleswarapu Nagaradhesh <nagaradh@codeaurora.org>
This commit is contained in:
Yeleswarapu Nagaradhesh 2015-09-08 14:31:51 +05:30 committed by Gerrit - the friendly Code Review server
parent df4fdb8676
commit 5ca310ff90
2 changed files with 17 additions and 0 deletions
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1
include/sound/soc.h
View File

@ -1252,6 +1252,7 @@ int snd_soc_of_parse_audio_routing(struct snd_soc_card *card,
const char *propname);
unsigned int snd_soc_of_parse_daifmt(struct device_node *np,
const char *prefix);
int soc_check_aux_dev_byname(struct snd_soc_card *card, const char *codec_name);
#include <sound/soc-dai.h>

16
sound/soc/soc-core.c
View File

@ -1520,6 +1520,22 @@ static int soc_check_aux_dev(struct snd_soc_card *card, int num)
return -EPROBE_DEFER;
}
int soc_check_aux_dev_byname(struct snd_soc_card *card, const char *codec_name)
{
struct snd_soc_codec *codec;
/* find CODEC from registered CODECs*/
list_for_each_entry(codec, &codec_list, list) {
if (!strcmp(codec->name, codec_name))
return 0;
}
dev_err(card->dev, "ASoC: %s not registered\n", codec_name);
return -EPROBE_DEFER;
}
EXPORT_SYMBOL(soc_check_aux_dev_byname);
static int soc_probe_aux_dev(struct snd_soc_card *card, int num)
{
struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];