r1462 - cpu/x86/pc/olpc/via dev/via/unichrome

Author: wmb
Date: 2009-11-07 09:28:16 +0000 (Sat, 07 Nov 2009)
New Revision: 1462

Modified:
   cpu/x86/pc/olpc/via/dramtiming.fth
   dev/via/unichrome/unichrome.fth
Log:
OLPC trac 9333 - fixed screen flicker by setting the VIA display FIFO registers.

Modified: cpu/x86/pc/olpc/via/dramtiming.fth
===================================================================
--- cpu/x86/pc/olpc/via/dramtiming.fth	2009-11-06 07:36:09 UTC (rev 1461)
+++ cpu/x86/pc/olpc/via/dramtiming.fth	2009-11-07 09:28:16 UTC (rev 1462)
@@ -87,8 +87,7 @@
 rank-size #ranks * constant total-size
 [then]

-\ h# 400.0000 constant /fbmem
-h# 1000.0000 constant /fbmem
+h# 400.0000 constant /fbmem
 : >fbmem-base  ( size/64M -- low high )
    d# 26 lshift           ( memsize-in-bytes )
    /fbmem -               ( memsize-less-framebuf-size )

Modified: dev/via/unichrome/unichrome.fth
===================================================================
--- dev/via/unichrome/unichrome.fth	2009-11-06 07:36:09 UTC (rev 1461)
+++ dev/via/unichrome/unichrome.fth	2009-11-07 09:28:16 UTC (rev 1462)
@@ -732,7 +732,7 @@
    80 17 crt-clr  \ Assert reset - Turn off screen
    set-secondary-timings
    random-stuff
-   lower-power
+   mode-independent-init
    \ Turn on power here?
    1e 6c crt-clr  \ 10=>0: VCK source is VCK PLL  0e=>0: LCDCK PLL RefClk from X1 Pin
    pll set-lcdck
@@ -768,12 +768,15 @@
 \   00 08 h# 6b crt-mask  \ Not simultaneous mode

40 16 seq-set  \ manual says the bit is reserved, but the viafb driver says "CRT path set to IGA2"
+   80 59 seq-clr  \ Turn off IGA1 in power control register
 ;
 : olpc-crt-off  ( -- )
+   80 59 seq-clr  \ Turn off IGA1 in power control register
    30 1b seq-clr  \ IGA1 engine clock off
    30 36 crt-set  \ DAC off
 ;
 : olpc-crt-on  ( -- )
+   80 59 seq-set  \ Turn on IGA1 in power control register
    30 1b seq-set  \ IGA1 engine clock on
    30 36 crt-clr  \ DAC on
 ;