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drm/i915: Add rudimentary plane state verification 

Check that the planes are in the state we expect them to be. For
now we can only check whether each plane is correctly enabled or
disabled. In the future we may want to expand the plane state
readout to support a more thorough verification.

v2: Verify all planes part of the state as long as at least
    one crtc is doing a modeset (Daniel)
v3: Fix typoes (James)

Cc: James Ausmus <james.ausmus@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Suggested-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: James Ausmus <james.ausmus@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171117191917.11506-11-ville.syrjala@linux.intel.com
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
This commit is contained in:
Ville Syrjälä 2017-11-17 21:19:17 +02:00
parent 2924b8cc41
commit cff109f06d
1 changed files with 15 additions and 0 deletions
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15
drivers/gpu/drm/i915/intel_display.c
View File

@ -11600,6 +11600,18 @@ verify_crtc_state(struct drm_crtc *crtc,
}
}
static void
intel_verify_planes(struct intel_atomic_state *state)
{
struct intel_plane *plane;
const struct intel_plane_state *plane_state;
int i;
for_each_new_intel_plane_in_state(state, plane,
plane_state, i)
assert_plane(plane, plane_state->base.visible);
}
static void
verify_single_dpll_state(struct drm_i915_private *dev_priv,
struct intel_shared_dpll *pll,
@ -12393,6 +12405,9 @@ static void intel_atomic_commit_tail(struct drm_atomic_state *state)
intel_modeset_verify_crtc(crtc, state, old_crtc_state, new_crtc_state);
}
if (intel_state->modeset)
intel_verify_planes(intel_state);
if (intel_state->modeset && intel_can_enable_sagv(state))
intel_enable_sagv(dev_priv);