From cc3202f5da3c81a99c5f3a605df527da7a77eed3 Mon Sep 17 00:00:00 2001 From: Vladimir Zapolskiy Date: Thu, 24 Jun 2010 17:38:50 +0400 Subject: 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 Acked-by: Liam Girdwood Signed-off-by: Mark Brown --- include/sound/uda134x.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'include/sound') 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 -- cgit v1.2.3-59-g8ed1b