extcon: arizona: Use bypass mode for MICVDD

We can perform microphone detection with MICVDD in bypass mode so try to
enable that during startup for minimal power - other users or machine
constraints will prevent bypass mode being activated if it is unsuitable.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/extcon/extcon-arizona.c b/drivers/extcon/extcon-arizona.c
index 427a289f32a5..6c19833ed2d0 100644
--- a/drivers/extcon/extcon-arizona.c
+++ b/drivers/extcon/extcon-arizona.c
@@ -434,6 +434,11 @@ static int __devinit arizona_extcon_probe(struct platform_device *pdev)
         regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_ANALOGUE,
                            ARIZONA_JD1_ENA, ARIZONA_JD1_ENA);
 
+        ret = regulator_allow_bypass(info->micvdd, true);
+        if (ret != 0)
+                dev_warn(arizona->dev, "Failed to set MICVDD to bypass: %d\n",
+                         ret);
+
         pm_runtime_put(&pdev->dev);
 
         return 0;