drm/i915: Don't pretend that gen2 has a hardware frame counter

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Gen2 doesn't have a hardware frame counter that can be read out. Just
provide a stub .get_vblank_counter() that always returns 0 instead of
trying to read non-existing registers.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

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Ville Syrjälä 2013-10-11 21:52:44 +03:00 • committed by Daniel Vetter

parent 7c06b08a30

commit 4cdb83ec9a

1 changed files with 10 additions and 1 deletions

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drivers/gpu/drm/i915/i915_irq.c

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