On Thu, Dec 07, 2017 at 05:26:00PM +0800, Alex Tu wrote: > Rrefer to another patch [1] on mesa to extend width/height to 16384. > For issue : > - https://bugs.freedesktop.org/show_bug.cgi?id=102508 > - LP: #1714178 Triple monitor display failed with Dell Dock (HiDPI) > > [1] https://patchwork.freedesktop.org/patch/124918/ > > Signed-off-by: Alex Tu <alex.tu@xxxxxxxxxxxxx> > --- > drivers/gpu/drm/i915/intel_display.c | 6 +++--- > 1 file changed, 3 insertions(+), 3 deletions(-) > > diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c > index 47a2f6acee50..556fa57b18b8 100644 > --- a/drivers/gpu/drm/i915/intel_display.c > +++ b/drivers/gpu/drm/i915/intel_display.c > @@ -13905,7 +13905,7 @@ u32 intel_fb_pitch_limit(struct drm_i915_private *dev_priv, > /* "The stride in bytes must not exceed the of the size of 8K > * pixels and 32K bytes." The spec queote clearly says the patch is wrong. Either that or the spec quote is outdated. > */ > - return min(8192 * cpp, 32768); > + return min(16384 * cpp, 65536); > } else if (gen >= 5 && !HAS_GMCH_DISPLAY(dev_priv)) { > return 32*1024; > } else if (gen >= 4) { > @@ -14604,8 +14604,8 @@ int intel_modeset_init(struct drm_device *dev) > dev->mode_config.max_width = 4096; > dev->mode_config.max_height = 4096; > } else { > - dev->mode_config.max_width = 8192; > - dev->mode_config.max_height = 8192; > + dev->mode_config.max_width = 16384; > + dev->mode_config.max_height = 16384; Even if this would be correct (which it's not for most platforms at least, not quite sure about the very latest hardware), anyone doing this should at least do a cursory check of the relevant math in the driver to make seure we don't end up with integer overflows. > } > > if (IS_I845G(dev_priv) || IS_I865G(dev_priv)) { > -- > 2.11.0 > > _______________________________________________ > Intel-gfx mailing list > Intel-gfx@xxxxxxxxxxxxxxxxxxxxx > https://lists.freedesktop.org/mailman/listinfo/intel-gfx -- Ville Syrjälä Intel OTC _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
