drm/i915: Skip register reads in i915_get_crtc_scanoutpos()

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We have all the information we need in the mode structure, so going and
reading it from the hardware is pointless, and slower.

We never populated ->get_vblank_timestamp() in the UMS case, and as that
is the only way we'd ever call ->get_scanout_position(), we can
completely ignore UMS in i915_get_crtc_scanoutpos().

Also reorganize intel_irq_init() a bit to clarify the KMS vs. UMS
situation.

v2: Drop UMS code

Cc: Mario Kleiner <mario.kleiner@tuebingen.mpg.de>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: mario.kleiner.de@gmail.com
Tested-by: mario.kleiner.de@gmail.com
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

...

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Ville Syrjälä 2013-09-23 14:48:50 +03:00 • committed by Daniel Vetter

parent f646628b9f

commit c2baf4b709

1 changed files with 17 additions and 26 deletions

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drivers/gpu/drm/i915/i915_irq.c

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