[PATCH 06/13] drm/i915/dsb: Allow vblank synchronized DSB execution

[Ville Syrjala <ville.syrjala@xxxxxxxxxxxxxxx>]

From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>

Allow the caller to ask for the DSB commands to execute
during vblank.

Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
 drivers/gpu/drm/i915/display/intel_color.c | 2 +-
 drivers/gpu/drm/i915/display/intel_dsb.c   | 4 +++-
 drivers/gpu/drm/i915/display/intel_dsb.h   | 3 ++-
 3 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_color.c b/drivers/gpu/drm/i915/display/intel_color.c
index 6d6d300fa2df..162d671182e3 100644
--- a/drivers/gpu/drm/i915/display/intel_color.c
+++ b/drivers/gpu/drm/i915/display/intel_color.c
@@ -1258,7 +1258,7 @@ static void icl_load_luts(const struct intel_crtc_state *crtc_state)
 
 	if (crtc_state->dsb) {
 		intel_dsb_finish(crtc_state->dsb);
-		intel_dsb_commit(crtc_state->dsb);
+		intel_dsb_commit(crtc_state->dsb, false);
 		intel_dsb_wait(crtc_state->dsb);
 	}
 }
diff --git a/drivers/gpu/drm/i915/display/intel_dsb.c b/drivers/gpu/drm/i915/display/intel_dsb.c
index f454329b6901..43679090eceb 100644
--- a/drivers/gpu/drm/i915/display/intel_dsb.c
+++ b/drivers/gpu/drm/i915/display/intel_dsb.c
@@ -237,10 +237,11 @@ void intel_dsb_finish(struct intel_dsb *dsb)
 /**
  * intel_dsb_commit() - Trigger workload execution of DSB.
  * @dsb: DSB context
+ * @wait_for_vblank: wait for vblank before executing
  *
  * This function is used to do actual write to hardware using DSB.
  */
-void intel_dsb_commit(struct intel_dsb *dsb)
+void intel_dsb_commit(struct intel_dsb *dsb, bool wait_for_vblank)
 {
 	struct intel_crtc *crtc = dsb->crtc;
 	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
@@ -258,6 +259,7 @@ void intel_dsb_commit(struct intel_dsb *dsb)
 	}
 
 	intel_de_write(dev_priv, DSB_CTRL(pipe, dsb->id),
+		       (wait_for_vblank ? DSB_WAIT_FOR_VBLANK : 0) |
 		       DSB_ENABLE);
 	intel_de_write(dev_priv, DSB_HEAD(pipe, dsb->id),
 		       i915_ggtt_offset(dsb->vma));
diff --git a/drivers/gpu/drm/i915/display/intel_dsb.h b/drivers/gpu/drm/i915/display/intel_dsb.h
index 6b22499e8a5d..b8148b47022d 100644
--- a/drivers/gpu/drm/i915/display/intel_dsb.h
+++ b/drivers/gpu/drm/i915/display/intel_dsb.h
@@ -19,7 +19,8 @@ void intel_dsb_finish(struct intel_dsb *dsb);
 void intel_dsb_cleanup(struct intel_dsb *dsb);
 void intel_dsb_reg_write(struct intel_dsb *dsb,
 			 i915_reg_t reg, u32 val);
-void intel_dsb_commit(struct intel_dsb *dsb);
+void intel_dsb_commit(struct intel_dsb *dsb,
+		      bool wait_for_vblank);
 void intel_dsb_wait(struct intel_dsb *dsb);
 
 #endif
-- 
2.38.2