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drm/i915: Move vblank enable earlier and disable later

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We changed to an interrupt based vblank wait (as opposed to polling)
in:
 commit 44bd93a3d367913d883be6abba9a6e51a53c4e90
 Author: Daniel Vetter <daniel.vetter@ffwll.ch>
 Date:   Fri Jul 25 23:36:44 2014 +0200

    drm/i915: Use generic vblank wait

However we already had vblank waits on the wrong side of
drm_vblank_{on,off}() calls due to various workarounds, so now we get
a warning more or less every time we do a modeset, and we fail to
wait for the vblank like we should.

Move the drm_vblank_{on,off}() calls back out from
intel_crtc_{enable,disable}_planes() so that all of these vblank waits
return to proper operation. Also move the cxsr wait a bit earlier so
that we can keep the encoder disable after we've turned off vblanks.
Moving stuff out from the plane enable/disable functions seems
preferrable to moving the workaround stuff in since the workarounds are
required only on specific platforms.

While at it switch over to the drm_crtc_ variants of the vblank on/off
functions.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=82525
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=82490
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ville Syrjälä 2014-08-14 22:04:37 +03:00 committed by Daniel Vetter
parent 4f905cf97f
commit 4b3a9526fc
1 changed files with 24 additions and 11 deletions
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35
drivers/gpu/drm/i915/intel_display.c
View file

@ -3997,10 +3997,6 @@ static void intel_crtc_enable_planes(struct drm_crtc *crtc)
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int pipe = intel_crtc->pipe;
assert_vblank_disabled(crtc);
drm_vblank_on(dev, pipe);
intel_enable_primary_hw_plane(crtc->primary, crtc);
intel_enable_planes(crtc);
intel_crtc_update_cursor(crtc, true);
@ -4046,10 +4042,6 @@ static void intel_crtc_disable_planes(struct drm_crtc *crtc)
* consider this a flip to a NULL plane.
*/
intel_frontbuffer_flip(dev, INTEL_FRONTBUFFER_ALL_MASK(pipe));
drm_vblank_off(dev, pipe);
assert_vblank_disabled(crtc);
}
static void ironlake_crtc_enable(struct drm_crtc *crtc)
@ -4119,6 +4111,9 @@ static void ironlake_crtc_enable(struct drm_crtc *crtc)
if (HAS_PCH_CPT(dev))
cpt_verify_modeset(dev, intel_crtc->pipe);
assert_vblank_disabled(crtc);
drm_crtc_vblank_on(crtc);
intel_crtc_enable_planes(crtc);
}
@ -4226,6 +4221,9 @@ static void haswell_crtc_enable(struct drm_crtc *crtc)
intel_opregion_notify_encoder(encoder, true);
}
assert_vblank_disabled(crtc);
drm_crtc_vblank_on(crtc);
/* If we change the relative order between pipe/planes enabling, we need
* to change the workaround. */
haswell_mode_set_planes_workaround(intel_crtc);
@ -4261,6 +4259,9 @@ static void ironlake_crtc_disable(struct drm_crtc *crtc)
intel_crtc_disable_planes(crtc);
drm_crtc_vblank_off(crtc);
assert_vblank_disabled(crtc);
for_each_encoder_on_crtc(dev, crtc, encoder)
encoder->disable(encoder);
@ -4323,6 +4324,9 @@ static void haswell_crtc_disable(struct drm_crtc *crtc)
intel_crtc_disable_planes(crtc);
drm_crtc_vblank_off(crtc);
assert_vblank_disabled(crtc);
for_each_encoder_on_crtc(dev, crtc, encoder) {
intel_opregion_notify_encoder(encoder, false);
encoder->disable(encoder);
@ -4789,6 +4793,9 @@ static void valleyview_crtc_enable(struct drm_crtc *crtc)
for_each_encoder_on_crtc(dev, crtc, encoder)
encoder->enable(encoder);
assert_vblank_disabled(crtc);
drm_crtc_vblank_on(crtc);
intel_crtc_enable_planes(crtc);
/* Underruns don't raise interrupts, so check manually. */
@ -4846,6 +4853,9 @@ static void i9xx_crtc_enable(struct drm_crtc *crtc)
for_each_encoder_on_crtc(dev, crtc, encoder)
encoder->enable(encoder);
assert_vblank_disabled(crtc);
drm_crtc_vblank_on(crtc);
intel_crtc_enable_planes(crtc);
/*
@ -4909,9 +4919,6 @@ static void i9xx_crtc_disable(struct drm_crtc *crtc)
intel_set_memory_cxsr(dev_priv, false);
intel_crtc_disable_planes(crtc);
for_each_encoder_on_crtc(dev, crtc, encoder)
encoder->disable(encoder);
/*
* On gen2 planes are double buffered but the pipe isn't, so we must
* wait for planes to fully turn off before disabling the pipe.
@ -4920,6 +4927,12 @@ static void i9xx_crtc_disable(struct drm_crtc *crtc)
*/
intel_wait_for_vblank(dev, pipe);
drm_crtc_vblank_off(crtc);
assert_vblank_disabled(crtc);
for_each_encoder_on_crtc(dev, crtc, encoder)
encoder->disable(encoder);
intel_disable_pipe(intel_crtc);
i9xx_pfit_disable(intel_crtc);