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Commit eeec12bf authored by Graeme Gregory's avatar Graeme Gregory Committed by Jaroslav Kysela
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[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: default avatarGraeme Gregory <graeme@openmoko.org>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
Signed-off-by: default avatarJaroslav Kysela <perex@perex.cz>
parent 54e7e616

include/sound/soc-dapm.h

+2 −0
Original line number Original line Diff line number Diff line
@@ -223,6 +223,8 @@ int snd_soc_dapm_sys_add(struct device *dev); 
/* dapm audio endpoint control */

/* dapm audio endpoint control */

int snd_soc_dapm_set_endpoint(struct snd_soc_codec *codec,

int snd_soc_dapm_set_endpoint(struct snd_soc_codec *codec,

	char *pin, int status);

	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);

int snd_soc_dapm_sync_endpoints(struct snd_soc_codec *codec);





/* dapm widget types */

/* dapm widget types */

sound/soc/soc-dapm.c

+23 −0
Original line number Original line Diff line number Diff line
@@ -1342,6 +1342,29 @@ int snd_soc_dapm_set_endpoint(struct snd_soc_codec *codec, 
}

}

EXPORT_SYMBOL_GPL(snd_soc_dapm_set_endpoint);

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

 * snd_soc_dapm_free - free dapm resources

 * @socdev: SoC device

 * @socdev: SoC device