GSoC: modprobe glint - monitor loses signal

[Matt Turner]

Hi,
I've hit a snag and I'm not really sure how to debug it.

Both xf86-video-glint/src/pm3_dac.c:Permedia3Init and
kernel/drivers/video/pm3fb.c:pm3fb_write_mode set the mode in
virtually identical ways. I'm trying to do the same, but I think some
of what I'm passing in from drm_display_mode is wrong, specifically

WREG32(PM3HTotal,  glint_shift_bpp(bpp, mode->htotal - 1));
WREG32(PM3HsEnd,   glint_shift_bpp(bpp, mode->hsync_end - mode->hdisplay));
WREG32(PM3HsStart, glint_shift_bpp(bpp, mode->hsync_start - mode->hdisplay));
WREG32(PM3HbEnd,   glint_shift_bpp(bpp, mode->htotal - mode->hdisplay));
WREG32(PM3HgEnd,   glint_shift_bpp(bpp, mode->htotal - mode->hdisplay));
WREG32(PM3ScreenStride, glint_shift_bpp(bpp, crtc->fb->width));
WREG32(PM3VTotal,  glint_shift_bpp(bpp, mode->vtotal - 1));
WREG32(PM3VsEnd,   glint_shift_bpp(bpp, mode->vsync_end - 1));
WREG32(PM3VsStart, glint_shift_bpp(bpp, mode->vsync_start - 1));
WREG32(PM3VbEnd,   glint_shift_bpp(bpp, mode->vtotal - mode->vdisplay));

I printed the values that xf86-video-glint passes through here, and of
course they don't match with anything my driver has. I imagine guess
it's because they're all resolution-dependent?

Can anyone give me some advice?

Thanks,
Matt