[Intel-gfx] [PATCH 1/3] drm/i915: Update intel_crtc_active() to use state values (v2)

[Matt Roper]

With the switch to atomic plumbing for planes, some of our commit-time
work (e.g., watermarks) is done after the new atomic state is swapped
into the relevant DRM object, but before the DRM core has a chance to
update its legacy state values.  Switch intel_crtc_active() to look at
the state objects rather than legacy fields to ensure we operate on the
proper values.

Note that we're continuing to use intel_crtc->active here for the time
being since crtc->state isn't really hooked up yet.  Once CRTC states
are wired up properly, we'll want to switch this over to use
crtc->state->active instead.

v2: Switch back to intel_crtc->active for now; when Ander's work on CRTC
    states is ready, we can flip this over to use crtc->state->active
    instead. (Ville)

Cc: Ander Conselvan De Oliveira <conselvan2 at gmail.com>
Suggested-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
Signed-off-by: Matt Roper <matthew.d.roper at intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/intel_display.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 43d3575..e35fd7f 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -896,8 +896,12 @@ bool intel_crtc_active(struct drm_crtc *crtc)
 	 *
 	 * We can ditch the crtc->primary->fb check as soon as we can
 	 * properly reconstruct framebuffers.
+	 *
+	 * FIXME: The intel_crtc->active here should be switched to
+	 * crtc->state->active once we have proper CRTC states wired up
+	 * for atomic.
 	 */
-	return intel_crtc->active && crtc->primary->fb &&
+	return intel_crtc->active && crtc->primary->state->fb &&
 		intel_crtc->config->base.adjusted_mode.crtc_clock;
 }
 
-- 
1.8.5.1