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Commit 0df3f09d authored by Ville Syrjälä's avatar Ville Syrjälä
Browse files

drm/i915: Use vblank_disable_immediate on gen2 



The vblank timestamp->counter guesstimator seems to be
working sufficiently well, so there's no reason not to
disable vblank interrupts ASAP even on gen2.

Signed-off-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190322180804.3300-2-ville.syrjala@linux.intel.com


Acked-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
parent d938da6b

drivers/gpu/drm/i915/i915_irq.c

+1 −7
Original line number Diff line number Diff line
@@ -4642,12 +4642,6 @@ void intel_irq_init(struct drm_i915_private *dev_priv) 
	else if (INTEL_GEN(dev_priv) >= 3)

		dev->driver->get_vblank_counter = i915_get_vblank_counter;



	/*

	 * Opt out of the vblank disable timer on everything except gen2.

	 * Gen2 doesn't have a hardware frame counter and so depends on

	 * vblank interrupts to produce sane vblank seuquence numbers.

	 */

	if (!IS_GEN(dev_priv, 2))

	dev->vblank_disable_immediate = true;



	/* Most platforms treat the display irq block as an always-on