diff options
| author | Graeme Gregory <graeme@openmoko.org> | 2008-04-30 19:27:40 +0200 |
|---|---|---|
| committer | Jaroslav Kysela <perex@perex.cz> | 2008-05-19 13:19:14 +0200 |
| commit | eeec12bf7b7d80d1c9cae5aae0dff7e2f928c64b (patch) | |
| tree | 34757a9cb4cc5f3c9a24699315e586db1668b578 | |
| parent | [ALSA] soc - tlv320aic3x - add GPIO support (diff) | |
| download | linux-eeec12bf7b7d80d1c9cae5aae0dff7e2f928c64b.tar.xz linux-eeec12bf7b7d80d1c9cae5aae0dff7e2f928c64b.zip | |
[ALSA] soc - DAPM - add hook to read state of DAPM widget
This adds a hook to read the power state of a DAPM widget, I use this
in the gta02 driver to expose certain DAPM widgets in the mixer for
ease of audio routing.
Signed-off-by: Graeme Gregory <graeme@openmoko.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
| -rw-r--r-- | include/sound/soc-dapm.h | 2 | ||||
| -rw-r--r-- | sound/soc/soc-dapm.c | 23 |
2 files changed, 25 insertions, 0 deletions
diff --git a/include/sound/soc-dapm.h b/include/sound/soc-dapm.h index a105b01e06d5..40cc695b69b6 100644 --- a/include/sound/soc-dapm.h +++ b/include/sound/soc-dapm.h @@ -223,6 +223,8 @@ int snd_soc_dapm_sys_add(struct device *dev); /* dapm audio endpoint control */ int snd_soc_dapm_set_endpoint(struct snd_soc_codec *codec, char *pin, int status); +int snd_soc_dapm_get_endpoint_status(struct snd_soc_codec *codec, + char *pin); int snd_soc_dapm_sync_endpoints(struct snd_soc_codec *codec); /* dapm widget types */ diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index af3326c63504..9fd5ee818e89 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -1343,6 +1343,29 @@ int snd_soc_dapm_set_endpoint(struct snd_soc_codec *codec, EXPORT_SYMBOL_GPL(snd_soc_dapm_set_endpoint); /** + * snd_soc_dapm_get_endpoint_status - get audio endpoint status + * @codec: audio codec + * @endpoint: audio signal endpoint (or start point) + * + * Get audio endpoint status - connected or disconnected. + * + * Returns status + */ +int snd_soc_dapm_get_endpoint_status(struct snd_soc_codec *codec, + char *endpoint) +{ + struct snd_soc_dapm_widget *w; + + list_for_each_entry(w, &codec->dapm_widgets, list) { + if (!strcmp(w->name, endpoint)) + return w->connected; + } + + return 0; +} +EXPORT_SYMBOL_GPL(snd_soc_dapm_get_endpoint); + +/** * snd_soc_dapm_free - free dapm resources * @socdev: SoC device * |