Do calculation of vsync and hsync from range limits EDID block according to the spec. EDID 1.4. Signed-off-by: Vitaly Prosyak <vitaly.prosyak@xxxxxxx> --- drivers/gpu/drm/drm_edid.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 7e49962..601152b 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -1977,11 +1977,11 @@ mode_in_hsync_range(const struct drm_display_mode *mode, int hsync, hmin, hmax; hmin = t[7]; - if (edid->revision >= 4) - hmin += ((t[4] & 0x04) ? 255 : 0); + if (edid->revision >= 4 && ((t[4] & 0x0c) == 0x0c)) + hmin += 255 ; hmax = t[8]; - if (edid->revision >= 4) - hmax += ((t[4] & 0x08) ? 255 : 0); + if (edid->revision >= 4 && (t[4] & 0x08)) + hmax += 255; hsync = drm_mode_hsync(mode); return (hsync <= hmax && hsync >= hmin); @@ -1994,11 +1994,11 @@ mode_in_vsync_range(const struct drm_display_mode *mode, int vsync, vmin, vmax; vmin = t[5]; - if (edid->revision >= 4) - vmin += ((t[4] & 0x01) ? 255 : 0); + if (edid->revision >= 4 && ((t[4] & 0x03) == 0x03)) + vmin += 255; vmax = t[6]; - if (edid->revision >= 4) - vmax += ((t[4] & 0x02) ? 255 : 0); + if (edid->revision >= 4 && (t[4] & 0x02)) + vmax += 255; vsync = drm_mode_vrefresh(mode); return (vsync <= vmax && vsync >= vmin); -- 1.9.1 _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
