drm/i915: don't allow interlaced pipeconf on gen2

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gen2 doesn't support it, so be a bit more paranoid and add a check to
ensure that we never ever set an unsupported interlaced bit.

Ensure that userspace can't set an interlaced mode by resetting
interlace_allowed for the crt on gen2. dvo and lvds are the only other
encoders that gen2 supports and these already disallow interlaced
modes.

Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

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This commit is contained in:

Daniel Vetter 2012-01-28 14:49:23 +01:00

parent 5def474ec6

commit dbb025757a

2 changed files with 6 additions and 2 deletions

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5

drivers/gpu/drm/i915/intel_crt.c

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3

drivers/gpu/drm/i915/intel_display.c

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