[OpenBIOS] r415 - dev/geode/ac97
svn at openbios.org
svn at openbios.org
Wed May 23 02:07:02 CEST 2007
Author: wmb
Date: 2007-05-23 02:07:01 +0200 (Wed, 23 May 2007)
New Revision: 415
Modified:
dev/geode/ac97/ac97.fth
Log:
OLPC audio - driver tweaks to deal with the MIC bias being turned off by early startup code.
Modified: dev/geode/ac97/ac97.fth
===================================================================
--- dev/geode/ac97/ac97.fth 2007-05-22 22:53:34 UTC (rev 414)
+++ dev/geode/ac97/ac97.fth 2007-05-23 00:07:01 UTC (rev 415)
@@ -211,17 +211,7 @@
: set-sample-rate ( hz -- ) to sample-rate ;
-: open-in ( -- )
- sample-rate d# 1000 / to s/ms ( hz )
- sample-rate h# 32 codec!
- 0 set-record-gain
- mic+0db
- mic-input
-;
: amp-default-on? ( -- flag ) " gx?" eval ;
-: close-in ( -- )
-\ h# 8000 set-record-gain \ mute
-;
: codec-set ( bitmask reg# -- ) dup >r codec@ or r> codec! ;
: codec-clr ( bitmask reg# -- ) dup >r codec@ swap invert and r> codec! ;
: amplifier-on ( -- )
@@ -240,7 +230,6 @@
: open-out ( -- )
amplifier-on
disable-playback
- h# 010 h# 76 codec! \ Route mixer out to headphones, unlock sample rate
sample-rate d# 1000 / to s/ms
sample-rate h# 2e codec! \ Only need to set surround DAC for OLPC
h# 606 set-pcm-gain \ Basic PCM Gain - -9 dB, just below clipping
@@ -338,12 +327,26 @@
: 48khz ( -- ) d# 48000 set-sample-rate ;
: default ( -- ) 48khz disable-playback ;
+: open-in ( -- )
+ sample-rate d# 1000 / to s/ms ( hz )
+ sample-rate h# 32 codec!
+ 0 set-record-gain
+ vbias-on
+ mic+0db
+ mic-input
+;
+: close-in ( -- )
+\ h# 8000 set-record-gain \ mute
+ vbias-off
+;
+
: open ( -- ok? )
map-regs
codec-ready? 0= if false exit then
get-device-id
fatal-error? if false exit then
default
+ h# 10 h# 76 codec-set \ Unlock sample rate
h# 2801 h# 2a codec-set \ Enable variable rate, power down LFE and center DACs
parse-args 0= if unmap-regs false exit then
true
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