From 6742064aef7f1fba8e68d30b2e726918a5d66790 Mon Sep 17 00:00:00 2001 From: Piotr Stankiewicz Date: Fri, 13 May 2016 17:03:55 +0100 Subject: ASoC: dapm: support user-defined stop condition in dai_get_connected_widgets Certain situations may warrant examining DAPM paths only to a certain arbitrary point, as opposed to always following them to the end. For instance, when establishing a connection between a front-end DAI link and a back-end DAI link in a DPCM path, it does not make sense to walk the DAPM graph beyond the first widget associated with a back-end link. This patch introduces a mechanism which lets a user of dai_get_connected_widgets supply a function which will be called for every node during the graph walk. When invoked, this function can execute arbitrary logic to decide whether the walk, given a DAPM widget and walk direction, should be terminated at that point or continued as normal. Signed-off-by: Piotr Stankiewicz Signed-off-by: Mark Brown --- include/sound/soc-dapm.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'include/sound/soc-dapm.h') diff --git a/include/sound/soc-dapm.h b/include/sound/soc-dapm.h index 3101d53468aa..ca77db443499 100644 --- a/include/sound/soc-dapm.h +++ b/include/sound/soc-dapm.h @@ -358,6 +358,7 @@ struct snd_soc_dapm_context; struct regulator; struct snd_soc_dapm_widget_list; struct snd_soc_dapm_update; +enum snd_soc_dapm_direction; int dapm_regulator_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event); @@ -451,7 +452,9 @@ void dapm_mark_endpoints_dirty(struct snd_soc_card *card); /* dapm path query */ int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai *dai, int stream, - struct snd_soc_dapm_widget_list **list); + struct snd_soc_dapm_widget_list **list, + bool (*custom_stop_condition)(struct snd_soc_dapm_widget *, + enum snd_soc_dapm_direction)); struct snd_soc_dapm_context *snd_soc_dapm_kcontrol_dapm( struct snd_kcontrol *kcontrol); -- cgit v1.2.3-55-g7522