drm/i915/display: add intel_crtc_wait_for_next_vblank() and use it

intel_wait_for_vblank() goes through a pipe to crtc lookup, while in
most cases we already have the crtc available. Avoid the extra lookups
by adding an intel_crtc based helper.

v2:
- Add intel_crtc_wait_for_next_vblank() helper (Ville)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/90cfbd8c3e79a742b0ee9e3ae75493acb0785dbb.1638366969.git.jani.nikula@intel.com

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

@@ -321,8 +321,8 @@ static void hsw_enable_crt(struct intel_atomic_state *state,
 
 	intel_crt_set_dpms(encoder, crtc_state, DRM_MODE_DPMS_ON);
 
-	intel_wait_for_vblank(dev_priv, pipe);
-	intel_wait_for_vblank(dev_priv, pipe);
+	intel_crtc_wait_for_next_vblank(crtc);
+	intel_crtc_wait_for_next_vblank(crtc);
 	intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
 	intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, true);
 }

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

@@ -775,7 +775,7 @@ void intel_plane_disable_noatomic(struct intel_crtc *crtc,
 	 */
 	if (HAS_GMCH(dev_priv) &&
 	    intel_set_memory_cxsr(dev_priv, false))
-		intel_wait_for_vblank(dev_priv, crtc->pipe);
+		intel_crtc_wait_for_next_vblank(crtc);
 
 	/*
 	 * Gen2 reports pipe underruns whenever all planes are disabled.
@@ -785,7 +785,7 @@ void intel_plane_disable_noatomic(struct intel_crtc *crtc,
 		intel_set_cpu_fifo_underrun_reporting(dev_priv, crtc->pipe, false);
 
 	intel_plane_disable_arm(plane, crtc_state);
-	intel_wait_for_vblank(dev_priv, crtc->pipe);
+	intel_crtc_wait_for_next_vblank(crtc);
 }
 
 unsigned int
@@ -1011,7 +1011,7 @@ bool intel_has_pending_fb_unpin(struct drm_i915_private *dev_priv)
 		if (cleanup_done)
 			continue;
 
-		drm_crtc_wait_one_vblank(crtc);
+		intel_crtc_wait_for_next_vblank(to_intel_crtc(crtc));
 
 		return true;
 	}
@@ -1158,7 +1158,7 @@ void hsw_disable_ips(const struct intel_crtc_state *crtc_state)
 	}
 
 	/* We need to wait for a vblank before we can disable the plane. */
-	intel_wait_for_vblank(dev_priv, crtc->pipe);
+	intel_crtc_wait_for_next_vblank(crtc);
 }
 
 static void intel_crtc_dpms_overlay_disable(struct intel_crtc *crtc)
@@ -1389,7 +1389,6 @@ static void intel_crtc_disable_flip_done(struct intel_atomic_state *state,
 static void intel_crtc_async_flip_disable_wa(struct intel_atomic_state *state,
 					     struct intel_crtc *crtc)
 {
-	struct drm_i915_private *i915 = to_i915(state->base.dev);
 	const struct intel_crtc_state *old_crtc_state =
 		intel_atomic_get_old_crtc_state(state, crtc);
 	const struct intel_crtc_state *new_crtc_state =
@@ -1415,7 +1414,7 @@ static void intel_crtc_async_flip_disable_wa(struct intel_atomic_state *state,
 	}
 
 	if (need_vbl_wait)
-		intel_wait_for_vblank(i915, crtc->pipe);
+		intel_crtc_wait_for_next_vblank(crtc);
 }
 
 static void intel_pre_plane_update(struct intel_atomic_state *state,
@@ -1434,7 +1433,7 @@ static void intel_pre_plane_update(struct intel_atomic_state *state,
 		hsw_disable_ips(old_crtc_state);
 
 	if (intel_fbc_pre_update(state, crtc))
-		intel_wait_for_vblank(dev_priv, pipe);
+		intel_crtc_wait_for_next_vblank(crtc);
 
 	if (!needs_async_flip_vtd_wa(old_crtc_state) &&
 	    needs_async_flip_vtd_wa(new_crtc_state))
@@ -1466,7 +1465,7 @@ static void intel_pre_plane_update(struct intel_atomic_state *state,
 	 */
 	if (HAS_GMCH(dev_priv) && old_crtc_state->hw.active &&
 	    new_crtc_state->disable_cxsr && intel_set_memory_cxsr(dev_priv, false))
-		intel_wait_for_vblank(dev_priv, pipe);
+		intel_crtc_wait_for_next_vblank(crtc);
 
 	/*
 	 * IVB workaround: must disable low power watermarks for at least
@@ -1477,7 +1476,7 @@ static void intel_pre_plane_update(struct intel_atomic_state *state,
 	 */
 	if (old_crtc_state->hw.active &&
 	    new_crtc_state->disable_lp_wm && ilk_disable_lp_wm(dev_priv))
-		intel_wait_for_vblank(dev_priv, pipe);
+		intel_crtc_wait_for_next_vblank(crtc);
 
 	/*
 	 * If we're doing a modeset we don't need to do any
@@ -1893,8 +1892,8 @@ static void ilk_crtc_enable(struct intel_atomic_state *state,
 	 * in case there are more corner cases we don't know about.
 	 */
 	if (new_crtc_state->has_pch_encoder) {
-		intel_wait_for_vblank(dev_priv, pipe);
-		intel_wait_for_vblank(dev_priv, pipe);
+		intel_crtc_wait_for_next_vblank(crtc);
+		intel_crtc_wait_for_next_vblank(crtc);
 	}
 	intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
 	intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, true);
@@ -2094,7 +2093,7 @@ static void hsw_crtc_enable(struct intel_atomic_state *state,
 	intel_encoders_enable(state, crtc);
 
 	if (psl_clkgate_wa) {
-		intel_wait_for_vblank(dev_priv, pipe);
+		intel_crtc_wait_for_next_vblank(crtc);
 		glk_pipe_scaler_clock_gating_wa(dev_priv, pipe, false);
 	}
 
@@ -2529,7 +2528,7 @@ static void i9xx_crtc_enable(struct intel_atomic_state *state,
 
 	/* prevents spurious underruns */
 	if (DISPLAY_VER(dev_priv) == 2)
-		intel_wait_for_vblank(dev_priv, pipe);
+		intel_crtc_wait_for_next_vblank(crtc);
 }
 
 static void i9xx_pfit_disable(const struct intel_crtc_state *old_crtc_state)
@@ -2560,7 +2559,7 @@ static void i9xx_crtc_disable(struct intel_atomic_state *state,
 	 * wait for planes to fully turn off before disabling the pipe.
 	 */
 	if (DISPLAY_VER(dev_priv) == 2)
-		intel_wait_for_vblank(dev_priv, pipe);
+		intel_crtc_wait_for_next_vblank(crtc);
 
 	intel_encoders_disable(state, crtc);
 
@@ -4645,7 +4644,8 @@ int intel_get_load_detect_pipe(struct drm_connector *connector,
 	drm_atomic_state_put(state);
 
 	/* let the connector get through one full cycle before testing */
-	intel_wait_for_vblank(dev_priv, crtc->pipe);
+	intel_crtc_wait_for_next_vblank(crtc);
+
 	return true;
 
 fail:
@@ -8462,7 +8462,7 @@ static void skl_commit_modeset_enables(struct intel_atomic_state *state)
 			if (!skl_ddb_entry_equal(&new_crtc_state->wm.skl.ddb,
 						 &old_crtc_state->wm.skl.ddb) &&
 			    (update_pipes | modeset_pipes))
-				intel_wait_for_vblank(dev_priv, pipe);
+				intel_crtc_wait_for_next_vblank(crtc);
 		}
 	}
 

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

@@ -2019,21 +2019,27 @@ intel_crtc_needs_modeset(const struct intel_crtc_state *crtc_state)
 	return drm_atomic_crtc_needs_modeset(&crtc_state->uapi);
 }
 
+static inline void
+intel_crtc_wait_for_next_vblank(struct intel_crtc *crtc)
+{
+	drm_crtc_wait_one_vblank(&crtc->base);
+}
+
 static inline void
 intel_wait_for_vblank(struct drm_i915_private *dev_priv, enum pipe pipe)
 {
 	struct intel_crtc *crtc = intel_get_crtc_for_pipe(dev_priv, pipe);
 
-	drm_crtc_wait_one_vblank(&crtc->base);
+	intel_crtc_wait_for_next_vblank(crtc);
 }
 
 static inline void
 intel_wait_for_vblank_if_active(struct drm_i915_private *dev_priv, enum pipe pipe)
 {
-	const struct intel_crtc *crtc = intel_get_crtc_for_pipe(dev_priv, pipe);
+	struct intel_crtc *crtc = intel_get_crtc_for_pipe(dev_priv, pipe);
 
 	if (crtc->active)
-		intel_wait_for_vblank(dev_priv, pipe);
+		intel_crtc_wait_for_next_vblank(crtc);
 }
 
 static inline bool intel_modifier_uses_dpt(struct drm_i915_private *i915, u64 modifier)

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

@@ -3905,7 +3905,7 @@ int intel_dp_retrain_link(struct intel_encoder *encoder,
 			to_intel_crtc_state(crtc->base.state);
 
 		/* Keep underrun reporting disabled until things are stable */
-		intel_wait_for_vblank(dev_priv, crtc->pipe);
+		intel_crtc_wait_for_next_vblank(crtc);
 
 		intel_set_cpu_fifo_underrun_reporting(dev_priv, crtc->pipe, true);
 		if (crtc_state->has_pch_encoder)

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

@@ -1842,7 +1842,7 @@ static void intel_enable_sdvo(struct intel_atomic_state *state,
 	intel_sdvo_write_sdvox(intel_sdvo, temp);
 
 	for (i = 0; i < 2; i++)
-		intel_wait_for_vblank(dev_priv, crtc->pipe);
+		intel_crtc_wait_for_next_vblank(crtc);
 
 	success = intel_sdvo_get_trained_inputs(intel_sdvo, &input1, &input2);
 	/*

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

@@ -924,8 +924,7 @@ intel_enable_tv(struct intel_atomic_state *state,
 	struct drm_i915_private *dev_priv = to_i915(dev);
 
 	/* Prevents vblank waits from timing out in intel_tv_detect_type() */
-	intel_wait_for_vblank(dev_priv,
-			      to_intel_crtc(pipe_config->uapi.crtc)->pipe);
+	intel_crtc_wait_for_next_vblank(to_intel_crtc(pipe_config->uapi.crtc));
 
 	intel_de_write(dev_priv, TV_CTL,
 		       intel_de_read(dev_priv, TV_CTL) | TV_ENC_ENABLE);
@@ -1618,7 +1617,7 @@ intel_tv_detect_type(struct intel_tv *intel_tv,
 	intel_de_write(dev_priv, TV_DAC, tv_dac);
 	intel_de_posting_read(dev_priv, TV_DAC);
 
-	intel_wait_for_vblank(dev_priv, crtc->pipe);
+	intel_crtc_wait_for_next_vblank(crtc);
 
 	type = -1;
 	tv_dac = intel_de_read(dev_priv, TV_DAC);
@@ -1651,7 +1650,7 @@ intel_tv_detect_type(struct intel_tv *intel_tv,
 	intel_de_posting_read(dev_priv, TV_CTL);
 
 	/* For unknown reasons the hw barfs if we don't do this vblank wait. */
-	intel_wait_for_vblank(dev_priv, crtc->pipe);
+	intel_crtc_wait_for_next_vblank(crtc);
 
 	/* Restore interrupt config */
 	if (connector->polled & DRM_CONNECTOR_POLL_HPD) {