ASoC: Allow force enabled pins to be disabled

Some systems, such as those with mechanical jack detection, may wish
to force enable a pin (typically mic bias) only some of the time.
Support such systems by having disable_pin() also coveer force enabled
pins.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>

diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 6112841..476dbe6 100644 (file)
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -1266,6 +1266,9 @@ static int snd_soc_dapm_set_pin(struct snd_soc_codec *codec,
                if (!strcmp(w->name, pin)) {
                        pr_debug("dapm: %s: pin %s\n", codec->name, pin);
                        w->connected = status;
+                       /* Allow disabling of forced pins */
+                       if (status == 0)
+                               w->force = 0;
                        return 0;
                }
        }