- Misc fixes and improvements to the R-Car DU driver

- Synopsys DW HDMI bridge DT bindings update
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Merge tag 'du-next-20220907' of git://linuxtv.org/pinchartl/media into drm-next

- Misc fixes and improvements to the R-Car DU driver
- Synopsys DW HDMI bridge DT bindings update

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/YxkL+tRI8uXDCvj9@pendragon.ideasonboard.com

Documentation/devicetree/bindings/display/bridge/renesas,dw-hdmi.yaml

@@ -38,6 +38,9 @@ properties:
   clock-names:
     maxItems: 2
 
+  resets:
+    maxItems: 1
+
   ports:
     $ref: /schemas/graph.yaml#/properties/ports
 
@@ -67,6 +70,7 @@ required:
   - reg
   - clocks
   - clock-names
+  - resets
   - interrupts
   - ports
 
@@ -85,6 +89,7 @@ examples:
         clocks = <&cpg CPG_CORE R8A7795_CLK_S0D4>, <&cpg CPG_MOD 729>;
         clock-names = "iahb", "isfr";
         power-domains = <&sysc R8A7795_PD_ALWAYS_ON>;
+        resets = <&cpg 729>;
 
         ports {
             #address-cells = <1>;

drivers/gpu/drm/rcar-du/Makefile

@@ -14,10 +14,3 @@ obj-$(CONFIG_DRM_RCAR_DU)		+= rcar-du-drm.o
 obj-$(CONFIG_DRM_RCAR_DW_HDMI)		+= rcar_dw_hdmi.o
 obj-$(CONFIG_DRM_RCAR_LVDS)		+= rcar_lvds.o
 obj-$(CONFIG_DRM_RCAR_MIPI_DSI)		+= rcar_mipi_dsi.o
-
-# 'remote-endpoint' is fixed up at run-time
-DTC_FLAGS_rcar_du_of_lvds_r8a7790 += -Wno-graph_endpoint
-DTC_FLAGS_rcar_du_of_lvds_r8a7791 += -Wno-graph_endpoint
-DTC_FLAGS_rcar_du_of_lvds_r8a7793 += -Wno-graph_endpoint
-DTC_FLAGS_rcar_du_of_lvds_r8a7795 += -Wno-graph_endpoint
-DTC_FLAGS_rcar_du_of_lvds_r8a7796 += -Wno-graph_endpoint

drivers/gpu/drm/rcar-du/rcar_du_crtc.c

@@ -29,6 +29,7 @@
 #include "rcar_du_regs.h"
 #include "rcar_du_vsp.h"
 #include "rcar_lvds.h"
+#include "rcar_mipi_dsi.h"
 
 static u32 rcar_du_crtc_read(struct rcar_du_crtc *rcrtc, u32 reg)
 {
@@ -744,7 +745,19 @@ static void rcar_du_crtc_atomic_enable(struct drm_crtc *crtc,
 		const struct drm_display_mode *mode =
 			&crtc->state->adjusted_mode;
 
-		rcar_lvds_clk_enable(bridge, mode->clock * 1000);
+		rcar_lvds_pclk_enable(bridge, mode->clock * 1000);
+	}
+
+	/*
+	 * Similarly to LVDS, on V3U the dot clock is provided by the DSI
+	 * encoder, and we need to enable the DSI clocks before enabling the CRTC.
+	 */
+	if ((rcdu->info->dsi_clk_mask & BIT(rcrtc->index)) &&
+	    (rstate->outputs &
+	     (BIT(RCAR_DU_OUTPUT_DSI0) | BIT(RCAR_DU_OUTPUT_DSI1)))) {
+		struct drm_bridge *bridge = rcdu->dsi[rcrtc->index];
+
+		rcar_mipi_dsi_pclk_enable(bridge, state);
 	}
 
 	rcar_du_crtc_start(rcrtc);
@@ -777,7 +790,20 @@ static void rcar_du_crtc_atomic_disable(struct drm_crtc *crtc,
 		 * Disable the LVDS clock output, see
 		 * rcar_du_crtc_atomic_enable().
 		 */
-		rcar_lvds_clk_disable(bridge);
+		rcar_lvds_pclk_disable(bridge);
+	}
+
+	if ((rcdu->info->dsi_clk_mask & BIT(rcrtc->index)) &&
+	    (rstate->outputs &
+	     (BIT(RCAR_DU_OUTPUT_DSI0) | BIT(RCAR_DU_OUTPUT_DSI1)))) {
+		struct drm_bridge *bridge = rcdu->dsi[rcrtc->index];
+
+		/*
+		 * Disable the DSI clock output, see
+		 * rcar_du_crtc_atomic_enable().
+		 */
+
+		rcar_mipi_dsi_pclk_disable(bridge);
 	}
 
 	spin_lock_irq(&crtc->dev->event_lock);

drivers/gpu/drm/rcar-du/rcar_du_drv.c

@@ -27,7 +27,6 @@
 
 #include "rcar_du_drv.h"
 #include "rcar_du_kms.h"
-#include "rcar_du_regs.h"
 
 /* -----------------------------------------------------------------------------
  * Device Information
@@ -507,7 +506,8 @@ static const struct rcar_du_device_info rcar_du_r8a7799x_info = {
 static const struct rcar_du_device_info rcar_du_r8a779a0_info = {
 	.gen = 3,
 	.features = RCAR_DU_FEATURE_CRTC_IRQ
-		  | RCAR_DU_FEATURE_VSP1_SOURCE,
+		  | RCAR_DU_FEATURE_VSP1_SOURCE
+		  | RCAR_DU_FEATURE_NO_BLENDING,
 	.channels_mask = BIT(1) | BIT(0),
 	.routes = {
 		/* R8A779A0 has two MIPI DSI outputs. */

drivers/gpu/drm/rcar-du/rcar_du_drv.h

@@ -31,6 +31,7 @@ struct rcar_du_device;
 #define RCAR_DU_FEATURE_VSP1_SOURCE	BIT(2)	/* Has inputs from VSP1 */
 #define RCAR_DU_FEATURE_INTERLACED	BIT(3)	/* HW supports interlaced */
 #define RCAR_DU_FEATURE_TVM_SYNC	BIT(4)	/* Has TV switch/sync modes */
+#define RCAR_DU_FEATURE_NO_BLENDING	BIT(5)	/* PnMR.SPIM does not have ALP nor EOR bits */
 
 #define RCAR_DU_QUIRK_ALIGN_128B	BIT(0)	/* Align pitches to 128 bytes */
 
@@ -91,6 +92,7 @@ struct rcar_du_device_info {
 #define RCAR_DU_MAX_GROUPS		DIV_ROUND_UP(RCAR_DU_MAX_CRTCS, 2)
 #define RCAR_DU_MAX_VSPS		4
 #define RCAR_DU_MAX_LVDS		2
+#define RCAR_DU_MAX_DSI			2
 
 struct rcar_du_device {
 	struct device *dev;
@@ -107,6 +109,7 @@ struct rcar_du_device {
 	struct platform_device *cmms[RCAR_DU_MAX_CRTCS];
 	struct rcar_du_vsp vsps[RCAR_DU_MAX_VSPS];
 	struct drm_bridge *lvds[RCAR_DU_MAX_LVDS];
+	struct drm_bridge *dsi[RCAR_DU_MAX_DSI];
 
 	struct {
 		struct drm_property *colorkey;

drivers/gpu/drm/rcar-du/rcar_du_encoder.c

@@ -9,18 +9,13 @@
 
 #include <linux/export.h>
 #include <linux/of.h>
-#include <linux/slab.h>
 
 #include <drm/drm_bridge.h>
 #include <drm/drm_bridge_connector.h>
-#include <drm/drm_crtc.h>
-#include <drm/drm_managed.h>
-#include <drm/drm_modeset_helper_vtables.h>
 #include <drm/drm_panel.h>
 
 #include "rcar_du_drv.h"
 #include "rcar_du_encoder.h"
-#include "rcar_du_kms.h"
 #include "rcar_lvds.h"
 
 /* -----------------------------------------------------------------------------
@@ -84,6 +79,10 @@ int rcar_du_encoder_init(struct rcar_du_device *rcdu,
 		if (output == RCAR_DU_OUTPUT_LVDS0 ||
 		    output == RCAR_DU_OUTPUT_LVDS1)
 			rcdu->lvds[output - RCAR_DU_OUTPUT_LVDS0] = bridge;
+
+		if (output == RCAR_DU_OUTPUT_DSI0 ||
+		    output == RCAR_DU_OUTPUT_DSI1)
+			rcdu->dsi[output - RCAR_DU_OUTPUT_DSI0] = bridge;
 	}
 
 	/*

drivers/gpu/drm/rcar-du/rcar_du_kms.c

@@ -405,8 +405,8 @@ rcar_du_fb_create(struct drm_device *dev, struct drm_file *file_priv,
 
 	format = rcar_du_format_info(mode_cmd->pixel_format);
 	if (format == NULL) {
-		dev_dbg(dev->dev, "unsupported pixel format %08x\n",
+		dev_dbg(dev->dev, "unsupported pixel format %p4cc\n",
-			mode_cmd->pixel_format);
+			&mode_cmd->pixel_format);
 		return ERR_PTR(-EINVAL);
 	}
 

drivers/gpu/drm/rcar-du/rcar_du_plane.c

@@ -506,8 +506,15 @@ static void rcar_du_plane_setup_format_gen3(struct rcar_du_group *rgrp,
 					    unsigned int index,
 					    const struct rcar_du_plane_state *state)
 {
-	rcar_du_plane_write(rgrp, index, PnMR,
+	struct rcar_du_device *rcdu = rgrp->dev;
-			    PnMR_SPIM_TP_OFF | state->format->pnmr);
+	u32 pnmr = state->format->pnmr | PnMR_SPIM_TP_OFF;
+
+	if (rcdu->info->features & RCAR_DU_FEATURE_NO_BLENDING) {
+		/* No blending. ALP and EOR are not supported. */
+		pnmr &= ~(PnMR_SPIM_ALP | PnMR_SPIM_EOR);
+	}
+
+	rcar_du_plane_write(rgrp, index, PnMR, pnmr);
 
 	rcar_du_plane_write(rgrp, index, PnDDCR4,
 			    state->format->edf | PnDDCR4_CODE);
@@ -521,7 +528,6 @@ static void rcar_du_plane_setup_format_gen3(struct rcar_du_group *rgrp,
 	 * register to 0 to avoid this.
 	 */
 
-	/* TODO: Check if alpha-blending should be disabled in PnMR. */
 	rcar_du_plane_write(rgrp, index, PnALPHAR, 0);
 }
 
@@ -619,8 +625,8 @@ int __rcar_du_plane_atomic_check(struct drm_plane *plane,
 
 	*format = rcar_du_format_info(state->fb->format->format);
 	if (*format == NULL) {
-		dev_dbg(dev->dev, "%s: unsupported format %08x\n", __func__,
+		dev_dbg(dev->dev, "%s: unsupported format %p4cc\n", __func__,
-			state->fb->format->format);
+			&state->fb->format->format);
 		return -EINVAL;
 	}
 

drivers/gpu/drm/rcar-du/rcar_du_vsp.c

@@ -152,6 +152,7 @@ static void rcar_du_vsp_plane_setup(struct rcar_du_vsp_plane *plane)
 		.alpha = state->state.alpha >> 8,
 		.zpos = state->state.zpos,
 	};
+	u32 fourcc = state->format->fourcc;
 	unsigned int i;
 
 	cfg.src.left = state->state.src.x1 >> 16;
@@ -168,9 +169,27 @@ static void rcar_du_vsp_plane_setup(struct rcar_du_vsp_plane *plane)
 		cfg.mem[i] = sg_dma_address(state->sg_tables[i].sgl)
 			   + fb->offsets[i];
 
-	format = rcar_du_format_info(state->format->fourcc);
+	if (state->state.pixel_blend_mode == DRM_MODE_BLEND_PIXEL_NONE) {
+		switch (fourcc) {
+		case DRM_FORMAT_ARGB1555:
+			fourcc = DRM_FORMAT_XRGB1555;
+			break;
+
+		case DRM_FORMAT_ARGB4444:
+			fourcc = DRM_FORMAT_XRGB4444;
+			break;
+
+		case DRM_FORMAT_ARGB8888:
+			fourcc = DRM_FORMAT_XRGB8888;
+			break;
+		}
+	}
+
+	format = rcar_du_format_info(fourcc);
 	cfg.pixelformat = format->v4l2;
 
+	cfg.premult = state->state.pixel_blend_mode == DRM_MODE_BLEND_PREMULTI;
+
 	vsp1_du_atomic_update(plane->vsp->vsp, crtc->vsp_pipe,
 			      plane->index, &cfg);
 }
@@ -436,6 +455,11 @@ int rcar_du_vsp_init(struct rcar_du_vsp *vsp, struct device_node *np,
 		drm_plane_create_zpos_property(&plane->plane, i, 0,
 					       num_planes - 1);
 
+		drm_plane_create_blend_mode_property(&plane->plane,
+					BIT(DRM_MODE_BLEND_PIXEL_NONE) |
+					BIT(DRM_MODE_BLEND_PREMULTI) |
+					BIT(DRM_MODE_BLEND_COVERAGE));
+
 		vsp->num_planes++;
 	}
 

drivers/gpu/drm/rcar-du/rcar_du_writeback.c

@@ -166,8 +166,8 @@ static int rcar_du_wb_enc_atomic_check(struct drm_encoder *encoder,
 
 	wb_state->format = rcar_du_format_info(fb->format->format);
 	if (wb_state->format == NULL) {
-		dev_dbg(dev->dev, "%s: unsupported format %08x\n", __func__,
+		dev_dbg(dev->dev, "%s: unsupported format %p4cc\n", __func__,
-			fb->format->format);
+			&fb->format->format);
 		return -EINVAL;
 	}
 

drivers/gpu/drm/rcar-du/rcar_lvds.c

@@ -306,7 +306,7 @@ static void rcar_lvds_pll_setup_d3_e3(struct rcar_lvds *lvds, unsigned int freq)
  * Clock - D3/E3 only
  */
 
-int rcar_lvds_clk_enable(struct drm_bridge *bridge, unsigned long freq)
+int rcar_lvds_pclk_enable(struct drm_bridge *bridge, unsigned long freq)
 {
 	struct rcar_lvds *lvds = bridge_to_rcar_lvds(bridge);
 	int ret;
@@ -324,9 +324,9 @@ int rcar_lvds_clk_enable(struct drm_bridge *bridge, unsigned long freq)
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(rcar_lvds_clk_enable);
+EXPORT_SYMBOL_GPL(rcar_lvds_pclk_enable);
 
-void rcar_lvds_clk_disable(struct drm_bridge *bridge)
+void rcar_lvds_pclk_disable(struct drm_bridge *bridge)
 {
 	struct rcar_lvds *lvds = bridge_to_rcar_lvds(bridge);
 
@@ -339,7 +339,7 @@ void rcar_lvds_clk_disable(struct drm_bridge *bridge)
 
 	clk_disable_unprepare(lvds->clocks.mod);
 }
-EXPORT_SYMBOL_GPL(rcar_lvds_clk_disable);
+EXPORT_SYMBOL_GPL(rcar_lvds_pclk_disable);
 
 /* -----------------------------------------------------------------------------
  * Bridge

drivers/gpu/drm/rcar-du/rcar_lvds.h

@@ -13,17 +13,17 @@
 struct drm_bridge;
 
 #if IS_ENABLED(CONFIG_DRM_RCAR_LVDS)
-int rcar_lvds_clk_enable(struct drm_bridge *bridge, unsigned long freq);
+int rcar_lvds_pclk_enable(struct drm_bridge *bridge, unsigned long freq);
-void rcar_lvds_clk_disable(struct drm_bridge *bridge);
+void rcar_lvds_pclk_disable(struct drm_bridge *bridge);
 bool rcar_lvds_dual_link(struct drm_bridge *bridge);
 bool rcar_lvds_is_connected(struct drm_bridge *bridge);
 #else
-static inline int rcar_lvds_clk_enable(struct drm_bridge *bridge,
+static inline int rcar_lvds_pclk_enable(struct drm_bridge *bridge,
 					unsigned long freq)
 {
 	return -ENOSYS;
 }
-static inline void rcar_lvds_clk_disable(struct drm_bridge *bridge) { }
+static inline void rcar_lvds_pclk_disable(struct drm_bridge *bridge) { }
 static inline bool rcar_lvds_dual_link(struct drm_bridge *bridge)
 {
 	return false;

drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c

@@ -25,6 +25,7 @@
 #include <drm/drm_panel.h>
 #include <drm/drm_probe_helper.h>
 
+#include "rcar_mipi_dsi.h"
 #include "rcar_mipi_dsi_regs.h"
 
 struct rcar_mipi_dsi {
@@ -414,7 +415,7 @@ static int rcar_mipi_dsi_startup(struct rcar_mipi_dsi *dsi,
 
 	/* Enable DOT clock */
 	vclkset = VCLKSET_CKEN;
-	rcar_mipi_dsi_set(dsi, VCLKSET, vclkset);
+	rcar_mipi_dsi_write(dsi, VCLKSET, vclkset);
 
 	if (dsi_format == 24)
 		vclkset |= VCLKSET_BPP_24;
@@ -429,7 +430,7 @@ static int rcar_mipi_dsi_startup(struct rcar_mipi_dsi *dsi,
 	vclkset |= VCLKSET_COLOR_RGB | VCLKSET_DIV(setup_info.div)
 		|  VCLKSET_LANE(dsi->lanes - 1);
 
-	rcar_mipi_dsi_set(dsi, VCLKSET, vclkset);
+	rcar_mipi_dsi_write(dsi, VCLKSET, vclkset);
 
 	/* After setting VCLKSET register, enable VCLKEN */
 	rcar_mipi_dsi_set(dsi, VCLKEN, VCLKEN_CKEN);
@@ -441,9 +442,21 @@ static int rcar_mipi_dsi_startup(struct rcar_mipi_dsi *dsi,
 
 static void rcar_mipi_dsi_shutdown(struct rcar_mipi_dsi *dsi)
 {
+	/* Disable VCLKEN */
+	rcar_mipi_dsi_write(dsi, VCLKSET, 0);
+
+	/* Disable DOT clock */
+	rcar_mipi_dsi_write(dsi, VCLKSET, 0);
+
 	rcar_mipi_dsi_clr(dsi, PHYSETUP, PHYSETUP_RSTZ);
 	rcar_mipi_dsi_clr(dsi, PHYSETUP, PHYSETUP_SHUTDOWNZ);
 
+	/* CFGCLK disable */
+	rcar_mipi_dsi_clr(dsi, CFGCLKSET, CFGCLKSET_CKEN);
+
+	/* LPCLK disable */
+	rcar_mipi_dsi_clr(dsi, LPCLKSET, LPCLKSET_CKEN);
+
 	dev_dbg(dsi->dev, "DSI device is shutdown\n");
 }
 
@@ -542,6 +555,34 @@ static int rcar_mipi_dsi_start_video(struct rcar_mipi_dsi *dsi)
 	return 0;
 }
 
+static void rcar_mipi_dsi_stop_video(struct rcar_mipi_dsi *dsi)
+{
+	u32 status;
+	int ret;
+
+	/* Disable transmission in video mode. */
+	rcar_mipi_dsi_clr(dsi, TXVMCR, TXVMCR_EN_VIDEO);
+
+	ret = read_poll_timeout(rcar_mipi_dsi_read, status,
+				!(status & TXVMSR_ACT),
+				2000, 100000, false, dsi, TXVMSR);
+	if (ret < 0) {
+		dev_err(dsi->dev, "Failed to disable video transmission\n");
+		return;
+	}
+
+	/* Assert video FIFO clear. */
+	rcar_mipi_dsi_set(dsi, TXVMCR, TXVMCR_VFCLR);
+
+	ret = read_poll_timeout(rcar_mipi_dsi_read, status,
+				!(status & TXVMSR_VFRDY),
+				2000, 100000, false, dsi, TXVMSR);
+	if (ret < 0) {
+		dev_err(dsi->dev, "Failed to assert video FIFO clear\n");
+		return;
+	}
+}
+
 /* -----------------------------------------------------------------------------
  * Bridge
  */
@@ -558,7 +599,22 @@ static int rcar_mipi_dsi_attach(struct drm_bridge *bridge,
 static void rcar_mipi_dsi_atomic_enable(struct drm_bridge *bridge,
 					struct drm_bridge_state *old_bridge_state)
 {
-	struct drm_atomic_state *state = old_bridge_state->base.state;
+	struct rcar_mipi_dsi *dsi = bridge_to_rcar_mipi_dsi(bridge);
+
+	rcar_mipi_dsi_start_video(dsi);
+}
+
+static void rcar_mipi_dsi_atomic_disable(struct drm_bridge *bridge,
+					 struct drm_bridge_state *old_bridge_state)
+{
+	struct rcar_mipi_dsi *dsi = bridge_to_rcar_mipi_dsi(bridge);
+
+	rcar_mipi_dsi_stop_video(dsi);
+}
+
+void rcar_mipi_dsi_pclk_enable(struct drm_bridge *bridge,
+			       struct drm_atomic_state *state)
+{
 	struct rcar_mipi_dsi *dsi = bridge_to_rcar_mipi_dsi(bridge);
 	const struct drm_display_mode *mode;
 	struct drm_connector *connector;
@@ -586,8 +642,6 @@ static void rcar_mipi_dsi_atomic_enable(struct drm_bridge *bridge,
 	if (ret < 0)
 		goto err_dsi_start_hs;
 
-	rcar_mipi_dsi_start_video(dsi);
-
 	return;
 
 err_dsi_start_hs:
@@ -595,15 +649,16 @@ err_dsi_start_hs:
 err_dsi_startup:
 	rcar_mipi_dsi_clk_disable(dsi);
 }
+EXPORT_SYMBOL_GPL(rcar_mipi_dsi_pclk_enable);
 
-static void rcar_mipi_dsi_atomic_disable(struct drm_bridge *bridge,
+void rcar_mipi_dsi_pclk_disable(struct drm_bridge *bridge)
-					 struct drm_bridge_state *old_bridge_state)
 {
 	struct rcar_mipi_dsi *dsi = bridge_to_rcar_mipi_dsi(bridge);
 
 	rcar_mipi_dsi_shutdown(dsi);
 	rcar_mipi_dsi_clk_disable(dsi);
 }
+EXPORT_SYMBOL_GPL(rcar_mipi_dsi_pclk_disable);
 
 static enum drm_mode_status
 rcar_mipi_dsi_bridge_mode_valid(struct drm_bridge *bridge,

drivers/gpu/drm/rcar-du/rcar_mipi_dsi.h

@@ -0,0 +1,31 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * R-Car DSI Encoder
+ *
+ * Copyright (C) 2022 Renesas Electronics Corporation
+ *
+ * Contact: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
+ */
+
+#ifndef __RCAR_MIPI_DSI_H__
+#define __RCAR_MIPI_DSI_H__
+
+struct drm_atomic_state;
+struct drm_bridge;
+
+#if IS_ENABLED(CONFIG_DRM_RCAR_MIPI_DSI)
+void rcar_mipi_dsi_pclk_enable(struct drm_bridge *bridge,
+			       struct drm_atomic_state *state);
+void rcar_mipi_dsi_pclk_disable(struct drm_bridge *bridge);
+#else
+static inline void rcar_mipi_dsi_pclk_enable(struct drm_bridge *bridge,
+					     struct drm_atomic_state *state)
+{
+}
+
+static inline void rcar_mipi_dsi_pclk_disable(struct drm_bridge *bridge)
+{
+}
+#endif /* CONFIG_DRM_RCAR_MIPI_DSI */
+
+#endif /* __RCAR_MIPI_DSI_H__ */

drivers/media/platform/renesas/vsp1/vsp1_drm.c

@@ -856,6 +856,8 @@ int vsp1_du_atomic_update(struct device *dev, unsigned int pipe_index,
 	rpf->mem.addr[1] = cfg->mem[1];
 	rpf->mem.addr[2] = cfg->mem[2];
 
+	rpf->format.flags = cfg->premult ? V4L2_PIX_FMT_FLAG_PREMUL_ALPHA : 0;
+
 	vsp1->drm->inputs[rpf_index].crop = cfg->src;
 	vsp1->drm->inputs[rpf_index].compose = cfg->dst;
 	vsp1->drm->inputs[rpf_index].zpos = cfg->zpos;

include/media/vsp1.h

@@ -51,6 +51,7 @@ int vsp1_du_setup_lif(struct device *dev, unsigned int pipe_index,
  * @dst: destination rectangle on the display (integer coordinates)
  * @alpha: alpha value (0: fully transparent, 255: fully opaque)
  * @zpos: Z position of the plane (from 0 to number of planes minus 1)
+ * @premult: true for premultiplied alpha
  */
 struct vsp1_du_atomic_config {
 	u32 pixelformat;
@@ -60,6 +61,7 @@ struct vsp1_du_atomic_config {
 	struct v4l2_rect dst;
 	unsigned int alpha;
 	unsigned int zpos;
+	bool premult;
 };
 
 /**