looking at wide mode support for GeodeLX (continued)
Bart Trojanowski
bart at jukie.net
Fri Feb 8 11:15:48 PST 2008
Jordan,
thanks for the thorough explanation of Cimarron.
* Jordan Crouse <jordan.crouse at amd.com> [080208 13:07]:
> Are we sure that there isn't a USERDEF equivalent for DDC?
We have these choices:
# define M_T_BUILTIN 0x01 /* built-in mode */
# define M_T_CLOCK_C (0x02 | M_T_BUILTIN) /* built-in mode - configure clock */
# define M_T_CRTC_C (0x04 | M_T_BUILTIN) /* built-in mode - configure CRTC */
# define M_T_CLOCK_CRTC_C (M_T_CLOCK_C | M_T_CRTC_C) /* built-in mode - configure CRTC and clock */
# define M_T_PREFERRED 0x08 /* preferred mode within a set */
# define M_T_DEFAULT 0x10 /* (VESA) default modes */
# define M_T_USERDEF 0x20 /* One of the modes from the config file */
# define M_T_DRIVER 0x40 /* Supplied by the driver (EDID, etc) */
> What is pMode->type for a mode from DDC?
All DDC modes get M_T_DRIVER, I think. From what I can see, one of them
will be M_T_PREFERRED. Code is in xserver-xorg/hw/xfree86/ddc/ddcProperty.c
> Well - this is academic if we either get rid of the cimarron mode or figure
> out a way to flag DDC modes.
There may be other fields in the Mode structure that we might be able to use:
int PrivSize;
INT32 * Private;
int PrivFlags;
Whose private data that is? Is it x-private or driver-private?
I shall investigate.
> Possibly, though X can do things like that and not tell you.
>
> You'll have to check in LXSetVideoMode to see what the active X and active Y
> size is. If we're setting whatever pMode-> tells us too, then its X,but
> if pMode is asking for 1920x1200 and we're ignoring it, then thats our bad.
I will have to get back to you on this one :)
-Bart
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