drm/i915/vrr: Plumb the DSB into intel_vrr_send_push()

Plumb the DSB down into intel_vrr_send_push() so that we can
perform the opration on the DSB.

TRANS_PUSH, being a transcoder register, needs non-posted writes
to make it through.

Signed-off-by: Ville Syrjälä <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
Reviewed-by: Ankit Nautiyal <[email protected]>

Author: vsyrjala

drivers/gpu/drm/i915/display/intel_crtc.c

@@ -714,7 +714,7 @@ void intel_pipe_update_end(struct intel_atomic_state *state,
 	 * which would cause the next frame to terminate already at vmin
 	 * vblank start instead of vmax vblank start.
 	 */
-	intel_vrr_send_push(new_crtc_state);
+	intel_vrr_send_push(NULL, new_crtc_state);
 
 	local_irq_enable();
 

drivers/gpu/drm/i915/display/intel_vrr.c

@@ -390,16 +390,24 @@ void intel_vrr_set_transcoder_timings(const struct intel_crtc_state *crtc_state)
 		       crtc_state->vrr.flipline - 1);
 }
 
-void intel_vrr_send_push(const struct intel_crtc_state *crtc_state)
+void intel_vrr_send_push(struct intel_dsb *dsb,
+			 const struct intel_crtc_state *crtc_state)
 {
 	struct intel_display *display = to_intel_display(crtc_state);
 	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
 
 	if (!crtc_state->vrr.enable)
 		return;
 
-	intel_de_write(display, TRANS_PUSH(display, cpu_transcoder),
-		       TRANS_PUSH_EN | TRANS_PUSH_SEND);
+	if (dsb)
+		intel_dsb_nonpost_start(dsb);
+
+	intel_de_write_dsb(display, dsb,
+			   TRANS_PUSH(display, cpu_transcoder),
+			   TRANS_PUSH_EN | TRANS_PUSH_SEND);
+
+	if (dsb)
+		intel_dsb_nonpost_end(dsb);
 }
 
 bool intel_vrr_is_push_sent(const struct intel_crtc_state *crtc_state)

drivers/gpu/drm/i915/display/intel_vrr.h

@@ -12,6 +12,7 @@ struct drm_connector_state;
 struct intel_atomic_state;
 struct intel_connector;
 struct intel_crtc_state;
+struct intel_dsb;
 
 bool intel_vrr_is_capable(struct intel_connector *connector);
 bool intel_vrr_is_in_range(struct intel_connector *connector, int vrefresh);
@@ -22,7 +23,8 @@ void intel_vrr_compute_config(struct intel_crtc_state *crtc_state,
 void intel_vrr_compute_config_late(struct intel_crtc_state *crtc_state);
 void intel_vrr_set_transcoder_timings(const struct intel_crtc_state *crtc_state);
 void intel_vrr_enable(const struct intel_crtc_state *crtc_state);
-void intel_vrr_send_push(const struct intel_crtc_state *crtc_state);
+void intel_vrr_send_push(struct intel_dsb *dsb,
+			 const struct intel_crtc_state *crtc_state);
 bool intel_vrr_is_push_sent(const struct intel_crtc_state *crtc_state);
 void intel_vrr_disable(const struct intel_crtc_state *old_crtc_state);
 void intel_vrr_get_config(struct intel_crtc_state *crtc_state);