[ALSA] powermac - Add AUTO_DRC config

PPC,PPC Tumbler driver
Added AUTO_DRC kernel config to enable/disable the auto-DRC-toggle
feature on tumbler/snapper.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 13 insertions, 1 deletions

diff --git a/sound/ppc/Kconfig b/sound/ppc/Kconfig
index bda5bc4e6148..206b9333f91f 100644
--- a/sound/ppc/Kconfig
+++ b/sound/ppc/Kconfig
@@ -20,5 +20,17 @@ config SND_POWERMAC
           To compile this driver as a module, choose M here: the module
           will be called snd-powermac.
 
-endmenu
+config SND_POWERMAC_AUTO_DRC
+        bool "Toggle DRC automatically at headphone/line plug-in"
+        depends on SND_POWERMAC
+        default y
+        help
+          Say Y here to enable the automatic toggle of DRC (dynamic
+          range compression) on Tumbler/Snapper.
+          If this feature is enabled, DRC is turned off when the
+          headphone/line jack is plugged, and turned on when unplugged.
 
+          Note that you can turn on/off DRC manually even without this
+          option.
+
+endmenu