summaryrefslogtreecommitdiffstats
path: root/firmware/drivers
diff options
context:
space:
mode:
authorAmaury Pouly <amaury.pouly@gmail.com>2016-08-21 20:31:55 +0100
committerAmaury Pouly <amaury.pouly@gmail.com>2016-12-12 13:13:13 +0100
commit4d526df7ac7132afe91292f3821ae46853fa9984 (patch)
tree628f484814189ddd023f405cfd26bd2c82e7a8c5 /firmware/drivers
parent69ea311398ed26797aec837f26b18c2e3e50744c (diff)
downloadrockbox-4d526df7ac7132afe91292f3821ae46853fa9984.tar.gz
rockbox-4d526df7ac7132afe91292f3821ae46853fa9984.tar.bz2
rockbox-4d526df7ac7132afe91292f3821ae46853fa9984.zip
wm8975: document audiohw settings
Change-Id: I0456f85e4ebc821c23e25026fbee3d8cf7526ee7
Diffstat (limited to 'firmware/drivers')
-rw-r--r--firmware/drivers/audio/wm8975.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/firmware/drivers/audio/wm8975.c b/firmware/drivers/audio/wm8975.c
index 88be2cf5ce..a1af1331f2 100644
--- a/firmware/drivers/audio/wm8975.c
+++ b/firmware/drivers/audio/wm8975.c
@@ -296,6 +296,8 @@ void audiohw_disable_recording(void)
wm8975_write(PWRMGMT1, wm8975_regs[PWRMGMT1]);
}
+/* volume in 0 .. 63, corresponds to -17.25dB .. 30dB in steps of 0.75dB
+ * microphone has an extra 20dB boost so 0 .. 63 corresponds to 2.75dB .. 50dB */
void audiohw_set_recvol(int left, int right, int type)
{
switch (type)