drm/i915: Read out VGA dotclock properly on LPT

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Rather than assume the VGA dotclock is really the FDI based thing,
let's read out the real thing via iclkip, and after readout it'll
get to compare it with the FDI based number to make sure they're
in sync.

Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1455738073-14502-6-git-send-email-ville.syrjala@linux.intel.com
Reviewed-by: Imre Deak <imre.deak@intel.com>

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This commit is contained in:

Ville Syrjälä 2016-02-17 21:41:12 +02:00

parent 64b46a0631

commit 8802e5b6de

4 changed files with 48 additions and 2 deletions

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8

drivers/gpu/drm/i915/i915_reg.h

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4

drivers/gpu/drm/i915/intel_crt.c

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37

drivers/gpu/drm/i915/intel_display.c

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1

drivers/gpu/drm/i915/intel_drv.h

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