From: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Thu, 14 Aug 2014 22:22:04 +0000 (+0300)
Subject: drm/i915: Check pixel clock in ns2501 mode_valid hook
X-Git-Tag: fixes-against-v3.18-rc2~73^2~32^2~45
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b07aaf8849f08b2e4c1ea1a91cae80e0c11c8d2a;p=pandora-kernel.git

drm/i915: Check pixel clock in ns2501 mode_valid hook

The vbt on my Fujitsu-Siemens Lifebook S6010 provides two 800x600 modes,
60Hz and 56Hz. The magic register values we have correspond to the 60Hz
mode, and as I don't know how one would trick the VGA BIOS to set up
the 56Hz mode we can't get the magic values for the orther mode. So
when checking whether a mode is valid also check the pixel clock so that
we filter out the 56Hz variant.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Thomas Richter <richter@rus.uni-stuttgart.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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