Commit f3bf3e45 authored Oct 04, 2011 by Mark Brown

ASoC: Don't mark the outputs of supplies as dirty on state changes



The whole point of supply widgets is that they aren't inputs to their
sinks so a state change in a supply should never affect the state of the
widget being supplied and we don't need to mark them as dirty.

           Power    Path   Neighbour
Before:    69       727    905
After:     63       607    731

This is particularly useful where supplies affect large portions of the
chip (eg, a bandgap supplying the analogue sections).

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

parent 9b8a83b2

sound/soc/soc-dapm.c

+11 −4

Original line number	Diff line number	Diff line
		@@ -1260,12 +1260,19 @@ static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power,
		path->connect);
		}
		}
		switch (w->id) {
		case snd_soc_dapm_supply:
		/* Supplies can't affect their outputs, only their inputs */
		break;
		default:
		list_for_each_entry(path, &w->sinks, list_source) {
		if (path->sink) {
		dapm_widget_set_peer_power(path->sink, power,
		path->connect);
		}
		}
		break;
		}

		if (power)
		dapm_seq_insert(w, up_list, true);

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