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drm/i915: add pipe asserts for the crtc enable sequence

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The i9xx modeset sequence is currently pretty fishy, so tight it all
up with some good assert-sprinkling.

We already have good coverage on the disable side, but the enable side
is spotty (since until recently it was wrong).

Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Daniel Vetter 2013-04-11 16:29:09 +02:00
parent 4667730163
commit 58c6eaa24d
1 changed files with 5 additions and 0 deletions
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5
drivers/gpu/drm/i915/intel_display.c
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@ -1474,6 +1474,8 @@ static void intel_enable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
int reg;
u32 val;
assert_pipe_disabled(dev_priv, pipe);
/* No really, not for ILK+ */
BUG_ON(!IS_VALLEYVIEW(dev_priv->dev) && dev_priv->info->gen >= 5);
@ -1835,6 +1837,9 @@ static void intel_enable_pipe(struct drm_i915_private *dev_priv, enum pipe pipe,
int reg;
u32 val;
assert_planes_disabled(dev_priv, pipe);
assert_sprites_disabled(dev_priv, pipe);
if (HAS_PCH_LPT(dev_priv->dev))
pch_transcoder = TRANSCODER_A;
else