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drm/i915/tv: After disabling the pipe, use wait_for_vblank_off()

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Hopefully this is a contributing factor to the spurious TV detection
repoted by Ivan Bulatovic and others.

References:

  Bug 16871 - "TV1 connected" with no tv
  https://bugzilla.kernel.org/show_bug.cgi?id=16871

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reported-by: Ivan Bulatovic <combuster@gmx.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
This commit is contained in:
Chris Wilson 2010-08-24 16:07:16 +01:00
parent a957355693
commit b7ac36dada
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/i915/intel_tv.c
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@ -1164,7 +1164,7 @@ intel_tv_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode,
I915_WRITE(pipeconf_reg, pipeconf & ~PIPEACONF_ENABLE);
/* Wait for vblank for the disable to take effect. */
intel_wait_for_vblank(dev, intel_crtc->pipe);
intel_wait_for_vblank_off(dev, intel_crtc->pipe);
/* Filter ctl must be set before TV_WIN_SIZE */
I915_WRITE(TV_FILTER_CTL_1, TV_AUTO_SCALE);