--- Alex Deucher <[EMAIL PROTECTED]> wrote:
> You may also want to take a look at my unfinished radeon tv-out patch:
>
> http://www.botchco.com/alex/xorg/radeon_tvout.c
> http://www.botchco.com/alex/xorg/radeon_tvout.h
> http://www.botchco.com/alex/xorg/radeon_tvout.diff
>
> one of the regs (DAC2 I think) has an option to be sourced to either a
> crtc or directly to the linear transform unit.
>
> Alex
>
> On 6/9/05, Vladimir Dergachev <[EMAIL PROTECTED]> wrote:
> >
> > There is an option "composite_sync" - take a look there.
> >
> > As for Y Cb Cr, I would expect this is implemented as some sort of
> > transform before output. I.e. the chip still thinks it is outputting R, G,
> > B, just weird R G B values.
> >
> > In particular take a look at how gamma support is implemented in the
> > Radeon driver for newer chipsets, it might shed some clues.
OK. I've finally got the time (and Internet connection!) to look at this
again, but I need some more help.
The "composite_sync" option only seems to relate to old hw like mach64. The
register it toggles is listed as 0x100 in atiregs.h but is missing from
radeon_reg.h. I've tried poking around but haven't managed to find anything
that works as yet. I know the TV will sync to a VGA composite signal just the
colours will be very wrong, the Sony PS2 _only_ outputs in composite sync and
I've played around with that quite a bit.
Alex, I'm sure your approach is the likely to be correct but I don't really
know where to go from here. Should I just keep trying to set random registers
or do you have some idea what I should do?
I did notice in your tvout patch:
#define RADEON_TV_DAC_CNTL 0x088c
-# define RADEON_TV_DAC_STD_MASK 0x0300
+# define RADEON_TV_DAC_BLANK (1 << 0)
+# define RADEON_TV_DAC_HOLD (1 << 1)
+# define RADEON_TV_DAC_PEDESTAL (1 << 2)
+# define RADEON_TV_MONITOR_DETECT_EN (1 << 4)
+# define RADEON_TV_DAC_CMPOUT (1 << 5) <-- related?
# define RADEON_TV_DAC_BGSLEEP (1 << 6)
+# define RADEON_TV_DAC_STD_MASK 0x0300
+# define RADEON_TV_DAC_STD_NTSC (1 << 8)
# define RADEON_TV_DAC_RDACPD (1 << 24)
# define RADEON_TV_DAC_GDACPD (1 << 25)
# define RADEON_TV_DAC_BDACPD (1 << 26)
Could RADEON_TV_DAC_CMPOUT be related to composite output or is it only for the
TV-out encoder hardware?
Any help would be greatly appreciated, at the moment I'm forced to use the vesa
driver in order to at least use s-video out to get any picture at all, it
doesn't work well, no video scaling/colour conversion, no 3D or even 2D
acceleration etc etc. TV-out would be better than what I have right now but
I'd really like to get it working with components, it should be easier anyway,
no?
Steve
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