drm/i915: Relocate intel_crtc_active()

Move intel_crtc_active() next to its only remaining
user (pre-g4x wm code).

Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191127201222.16669-4-ville.syrjala@linux.intel.com
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>

1 files changed, 19 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 669d45e6e6d7..7aa5824b15d2 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -814,6 +814,25 @@ static bool intel_wm_plane_visible(const struct intel_crtc_state *crtc_state,
 		return plane_state->uapi.visible;
 }
 
+static bool intel_crtc_active(struct intel_crtc *crtc)
+{
+	/* Be paranoid as we can arrive here with only partial
+	 * state retrieved from the hardware during setup.
+	 *
+	 * We can ditch the adjusted_mode.crtc_clock check as soon
+	 * as Haswell has gained clock readout/fastboot support.
+	 *
+	 * We can ditch the crtc->primary->state->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 crtc->active && crtc->base.primary->state->fb &&
+		crtc->config->hw.adjusted_mode.crtc_clock;
+}
+
 static struct intel_crtc *single_enabled_crtc(struct drm_i915_private *dev_priv)
 {
 	struct intel_crtc *crtc, *enabled = NULL;