drm/i915: Perform intel_enable_fbc() from a delayed task

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In order to accommodate the requirements of re-enabling FBC after
page-flipping, but to avoid doing so and incurring the cost of a wait
for vblank in the middle of a page-flip sequence, we defer the actual
enablement by 50ms. If any request to disable FBC arrive within that
interval, the enablement is cancelled and we are saved from blocking on
the wait.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Keith Packard <keithp@keithp.com>

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Chris Wilson 2011-07-08 12:22:42 +01:00 • committed by Keith Packard

parent 7782de3bd6

commit 1630fe754c

3 changed files with 90 additions and 2 deletions

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2

drivers/gpu/drm/i915/i915_drv.h

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83

drivers/gpu/drm/i915/intel_display.c

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7

drivers/gpu/drm/i915/intel_drv.h

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