drm/i915: Introduce intel_crtc_needs_fastset()

Replace the somewhat obscure crtc_state.update_pipe checks
with a more descriptive thing. Also nicely matches the
intel_crtc_needs_modeset() counterpart for full modesets.

v2: Handle one more case in the fbc code

Reviewed-by: Jani Nikula <jani.nikula@intel.com> #v1
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221021162442.27283-2-ville.syrjala@linux.intel.com

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

@@ -105,7 +105,7 @@ static bool hsw_ips_need_disable(struct intel_atomic_state *state,
 	 */
 	if (IS_HASWELL(i915) &&
 	    (new_crtc_state->uapi.color_mgmt_changed ||
-	     new_crtc_state->update_pipe) &&
+	     intel_crtc_needs_fastset(new_crtc_state)) &&
 	    new_crtc_state->gamma_mode == GAMMA_MODE_MODE_SPLIT)
 		return true;
 
@@ -147,7 +147,7 @@ static bool hsw_ips_need_enable(struct intel_atomic_state *state,
 	 */
 	if (IS_HASWELL(i915) &&
 	    (new_crtc_state->uapi.color_mgmt_changed ||
-	     new_crtc_state->update_pipe) &&
+	     intel_crtc_needs_fastset(new_crtc_state)) &&
 	    new_crtc_state->gamma_mode == GAMMA_MODE_MODE_SPLIT)
 		return true;
 
@@ -155,7 +155,7 @@ static bool hsw_ips_need_enable(struct intel_atomic_state *state,
 	 * We can't read out IPS on broadwell, assume the worst and
 	 * forcibly enable IPS on the first fastset.
 	 */
-	if (new_crtc_state->update_pipe && old_crtc_state->inherited)
+	if (intel_crtc_needs_fastset(new_crtc_state) && old_crtc_state->inherited)
 		return true;
 
 	return !old_crtc_state->ips_enabled;

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

@@ -387,7 +387,7 @@ static bool intel_crtc_needs_vblank_work(const struct intel_crtc_state *crtc_sta
 		!intel_crtc_needs_modeset(crtc_state) &&
 		!crtc_state->preload_luts &&
 		(crtc_state->uapi.color_mgmt_changed ||
-		 crtc_state->update_pipe);
+		 intel_crtc_needs_fastset(crtc_state));
 }
 
 static void intel_crtc_vblank_work(struct kthread_work *base)

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

@@ -631,8 +631,10 @@ intel_legacy_cursor_update(struct drm_plane *_plane,
 	 *
 	 * FIXME bigjoiner fastpath would be good
 	 */
-	if (!crtc_state->hw.active || intel_crtc_needs_modeset(crtc_state) ||
-	    crtc_state->update_pipe || crtc_state->bigjoiner_pipes)
+	if (!crtc_state->hw.active ||
+	    intel_crtc_needs_modeset(crtc_state) ||
+	    intel_crtc_needs_fastset(crtc_state) ||
+	    crtc_state->bigjoiner_pipes)
 		goto slow;
 
 	/*

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

@@ -4851,7 +4851,8 @@ static int intel_crtc_atomic_check(struct intel_atomic_state *state,
 	if (c8_planes_changed(crtc_state))
 		crtc_state->uapi.color_mgmt_changed = true;
 
-	if (mode_changed || crtc_state->update_pipe ||
+	if (mode_changed ||
+	    intel_crtc_needs_fastset(crtc_state) ||
 	    crtc_state->uapi.color_mgmt_changed) {
 		ret = intel_color_check(crtc_state);
 		if (ret)
@@ -4878,7 +4879,8 @@ static int intel_crtc_atomic_check(struct intel_atomic_state *state,
 	}
 
 	if (DISPLAY_VER(dev_priv) >= 9) {
-		if (mode_changed || crtc_state->update_pipe) {
+		if (mode_changed ||
+		    intel_crtc_needs_fastset(crtc_state)) {
 			ret = skl_update_scaler_crtc(crtc_state);
 			if (ret)
 				return ret;
@@ -6889,7 +6891,7 @@ static int intel_atomic_check(struct drm_device *dev,
 			goto fail;
 
 		if (!intel_crtc_needs_modeset(new_crtc_state) &&
-		    !new_crtc_state->update_pipe)
+		    !intel_crtc_needs_fastset(new_crtc_state))
 			continue;
 
 		intel_crtc_state_dump(new_crtc_state, state,
@@ -6927,7 +6929,8 @@ static int intel_atomic_prepare_commit(struct intel_atomic_state *state)
 	for_each_new_intel_crtc_in_state(state, crtc, crtc_state, i) {
 		bool mode_changed = intel_crtc_needs_modeset(crtc_state);
 
-		if (mode_changed || crtc_state->update_pipe ||
+		if (mode_changed ||
+		    intel_crtc_needs_fastset(crtc_state) ||
 		    crtc_state->uapi.color_mgmt_changed) {
 			intel_dsb_prepare(crtc_state);
 		}
@@ -7012,13 +7015,13 @@ static void commit_pipe_pre_planes(struct intel_atomic_state *state,
 	 */
 	if (!modeset) {
 		if (new_crtc_state->uapi.color_mgmt_changed ||
-		    new_crtc_state->update_pipe)
+		    intel_crtc_needs_fastset(new_crtc_state))
 			intel_color_commit_arm(new_crtc_state);
 
 		if (DISPLAY_VER(dev_priv) >= 9 || IS_BROADWELL(dev_priv))
 			bdw_set_pipemisc(new_crtc_state);
 
-		if (new_crtc_state->update_pipe)
+		if (intel_crtc_needs_fastset(new_crtc_state))
 			intel_pipe_fastset(old_crtc_state, new_crtc_state);
 	}
 
@@ -7078,16 +7081,16 @@ static void intel_update_crtc(struct intel_atomic_state *state,
 	if (!modeset) {
 		if (new_crtc_state->preload_luts &&
 		    (new_crtc_state->uapi.color_mgmt_changed ||
-		     new_crtc_state->update_pipe))
+		     intel_crtc_needs_fastset(new_crtc_state)))
 			intel_color_load_luts(new_crtc_state);
 
 		intel_pre_plane_update(state, crtc);
 
-		if (new_crtc_state->update_pipe)
+		if (intel_crtc_needs_fastset(new_crtc_state))
 			intel_encoders_update_pipe(state, crtc);
 
 		if (DISPLAY_VER(i915) >= 11 &&
-		    new_crtc_state->update_pipe)
+		    intel_crtc_needs_fastset(new_crtc_state))
 			icl_set_pipe_chicken(new_crtc_state);
 	}
 
@@ -7095,7 +7098,7 @@ static void intel_update_crtc(struct intel_atomic_state *state,
 
 	if (!modeset &&
 	    (new_crtc_state->uapi.color_mgmt_changed ||
-	     new_crtc_state->update_pipe))
+	     intel_crtc_needs_fastset(new_crtc_state)))
 		intel_color_commit_noarm(new_crtc_state);
 
 	intel_crtc_planes_update_noarm(state, crtc);
@@ -7117,7 +7120,7 @@ static void intel_update_crtc(struct intel_atomic_state *state,
 	 * valid pipe configuration from the BIOS we need to take care
 	 * of enabling them on the CRTC's first fastset.
 	 */
-	if (new_crtc_state->update_pipe && !modeset &&
+	if (intel_crtc_needs_fastset(new_crtc_state) && !modeset &&
 	    old_crtc_state->inherited)
 		intel_crtc_arm_fifo_underrun(crtc, new_crtc_state);
 }
@@ -7475,9 +7478,8 @@ static void intel_atomic_commit_tail(struct intel_atomic_state *state)
 	for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
 					    new_crtc_state, i) {
 		if (intel_crtc_needs_modeset(new_crtc_state) ||
-		    new_crtc_state->update_pipe) {
+		    intel_crtc_needs_fastset(new_crtc_state))
 			intel_modeset_get_crtc_power_domains(new_crtc_state, &put_domains[crtc->pipe]);
-		}
 	}
 
 	intel_commit_modeset_disables(state);

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

@@ -2058,6 +2058,12 @@ intel_crtc_needs_modeset(const struct intel_crtc_state *crtc_state)
 	return drm_atomic_crtc_needs_modeset(&crtc_state->uapi);
 }
 
+static inline bool
+intel_crtc_needs_fastset(const struct intel_crtc_state *crtc_state)
+{
+	return crtc_state->update_pipe;
+}
+
 static inline u32 intel_plane_ggtt_offset(const struct intel_plane_state *plane_state)
 {
 	return i915_ggtt_offset(plane_state->ggtt_vma);

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

@@ -1520,7 +1520,8 @@ void intel_fbc_update(struct intel_atomic_state *state,
 
 		mutex_lock(&fbc->lock);
 
-		if (crtc_state->update_pipe && plane_state->no_fbc_reason) {
+		if (intel_crtc_needs_fastset(crtc_state) &&
+		    plane_state->no_fbc_reason) {
 			if (fbc->state.plane == plane)
 				__intel_fbc_disable(fbc);
 		} else {

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

@@ -227,7 +227,8 @@ void intel_modeset_verify_crtc(struct intel_crtc *crtc,
 			       struct intel_crtc_state *old_crtc_state,
 			       struct intel_crtc_state *new_crtc_state)
 {
-	if (!intel_crtc_needs_modeset(new_crtc_state) && !new_crtc_state->update_pipe)
+	if (!intel_crtc_needs_modeset(new_crtc_state) &&
+	    !intel_crtc_needs_fastset(new_crtc_state))
 		return;
 
 	intel_wm_state_verify(crtc, new_crtc_state);