Re: [ANNOUNCE]: VM86 Daemon

[Antonino Daplas <adaplas@pol.net>]

On Tue, 2003-04-01 at 19:34, Benjamin Herrenschmidt wrote:
> On Tue, 2003-04-01 at 11:41, Antonino Daplas wrote:
> 
> > How I'm currently doing it with the extended vesafb driver is this:
> >
> > .../...
> 
> Ok, good. I'll investigate adapting that to radeonfb & aty128fb
> at least.

I'm planning to submit a patch to James to add more functionality to
fbmon.c,  fbmon.c should have these at least:

1. struct fb_videomode* fb_create_modedb(unsigned char *edid)

- this will create a mode database that can be used with fb_find_mode() 

2. fb_destroy_modedb(struct fb_videomode *modedb)

- destroy mode database

3. fb_get_monitor_limits(struct fb_monspecs *specs, unsigned char *edid)

- place monitor operating limits to specs

4. fb_validate_mode(struct fb_var_screeninfo *var, struct fb_info *info)

- validate mode timings in var

5. fb_get_mode(int flags, int val, struct fb_var_screeninfo *var, struct
fb_info *info)

- compute mode timings using GTF (refresh driven, hsync driven, pixclock
driven, or maximized refresh) and place result in var

#4 and #5 are already in fbmon.c


> Also, It would be very useful if we defined a standard ioctl to
> retreive the EDID block from userland when available.
> 

I have no problem with this, and this was discussed some time ago, but
nothing was really decided.  It's actually a very nice fallback solution
if there's really no method to get the EDID.

> This would help some fbdev based apps (especially the maconlinux
> emulator) and would be useful for some distro X autoconfig tools,
> especially on platforms where X cannot get that EDID via it's
> current mecanisms.
> 
> Actually, I would like 2 things:
> 
>  - Be able to know that the display has been detected as beeing a
> TFT panel, and in this case, a "simple" way to retreive the
> fb_var_screeninfo of the "native" panel mode. 
> 
>  - Returning the full EDID block when it exist
> 
> What do you think about adding some ioctl's for that ?
> 

It's okay by me.

Tony





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