ASoC: uda134x: replace a macro with a value in platform struct.

This change wipes out a hardcoded macro, which enables codec bias
level control. Now is_powered_on_standby value shall be used instead.

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

1 files changed, 12 insertions, 0 deletions

diff --git a/include/sound/uda134x.h b/include/sound/uda134x.h
index 509efb050176..e475659bd3be 100644
--- a/include/sound/uda134x.h
+++ b/include/sound/uda134x.h
@@ -18,6 +18,18 @@ struct uda134x_platform_data {
         struct l3_pins l3;
         void (*power) (int);
         int model;
+        /*
+          ALSA SOC usually puts the device in standby mode when it's not used
+          for sometime. If you unset is_powered_on_standby the driver will
+          turn off the ADC/DAC when this callback is invoked and turn it back
+          on when needed. Unfortunately this will result in a very light bump
+          (it can be audible only with good earphones). If this bothers you
+          set is_powered_on_standby, you will have slightly higher power
+          consumption. Please note that sending the L3 command for ADC is
+          enough to make the bump, so it doesn't make difference if you
+          completely take off power from the codec.
+        */
+        int is_powered_on_standby;
 #define UDA134X_UDA1340 1
 #define UDA134X_UDA1341 2
 #define UDA134X_UDA1344 3