DAPM models various widgets but lacks a sink widget. DSPs can have modules which take audio data, process it and are capable of generating events thus acting as a sink of data.
To make the dapm graph complete for such paths we need a dapm sink widget for these modules, so add a SND_SOC_DAPM_SINK to declare such a widget. This widget will be treated as SND_SOC_DAPM_EP_SINK endpoint in the dapm graph
Signed-off-by: Vinod Koul vinod.koul@intel.com --- include/sound/soc-dapm.h | 4 ++++ sound/soc/soc-dapm.c | 5 +++++ 2 files changed, 9 insertions(+)
diff --git a/include/sound/soc-dapm.h b/include/sound/soc-dapm.h index 7855cfe46b69..fe19dd3abb00 100644 --- a/include/sound/soc-dapm.h +++ b/include/sound/soc-dapm.h @@ -49,6 +49,9 @@ struct device; #define SND_SOC_DAPM_SIGGEN(wname) \ { .id = snd_soc_dapm_siggen, .name = wname, .kcontrol_news = NULL, \ .num_kcontrols = 0, .reg = SND_SOC_NOPM } +#define SND_SOC_DAPM_SINK(wname) \ +{ .id = snd_soc_dapm_sink, .name = wname, .kcontrol_news = NULL, \ + .num_kcontrols = 0, .reg = SND_SOC_NOPM } #define SND_SOC_DAPM_INPUT(wname) \ { .id = snd_soc_dapm_input, .name = wname, .kcontrol_news = NULL, \ .num_kcontrols = 0, .reg = SND_SOC_NOPM } @@ -484,6 +487,7 @@ enum snd_soc_dapm_type { snd_soc_dapm_aif_in, /* audio interface input */ snd_soc_dapm_aif_out, /* audio interface output */ snd_soc_dapm_siggen, /* signal generator */ + snd_soc_dapm_sink, snd_soc_dapm_dai_in, /* link to DAI structure */ snd_soc_dapm_dai_out, snd_soc_dapm_dai_link, /* link between two DAI structures */ diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index 3eba72c6f9dd..506677b12787 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -3351,6 +3351,11 @@ snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm, w->is_ep = SND_SOC_DAPM_EP_SOURCE; w->power_check = dapm_always_on_check_power; break; + case snd_soc_dapm_sink: + w->is_ep = SND_SOC_DAPM_EP_SINK; + w->power_check = dapm_always_on_check_power; + break; + case snd_soc_dapm_mux: case snd_soc_dapm_demux: case snd_soc_dapm_switch: