47 files changed, 345 insertions, 304 deletions

diff --git a/Documentation/devicetree/bindings/display/bridge/renesas,lvds.txt b/Documentation/devicetree/bindings/display/bridge/renesas,lvds.txt
index ba5469dd09f3..27a054e1bb5f 100644
--- a/Documentation/devicetree/bindings/display/bridge/renesas,lvds.txt
+++ b/Documentation/devicetree/bindings/display/bridge/renesas,lvds.txt
@@ -8,6 +8,7 @@ Required properties:
 
 - compatible : Shall contain one of
   - "renesas,r8a7743-lvds" for R8A7743 (RZ/G1M) compatible LVDS encoders
+  - "renesas,r8a774c0-lvds" for R8A774C0 (RZ/G2E) compatible LVDS encoders
   - "renesas,r8a7790-lvds" for R8A7790 (R-Car H2) compatible LVDS encoders
   - "renesas,r8a7791-lvds" for R8A7791 (R-Car M2-W) compatible LVDS encoders
   - "renesas,r8a7793-lvds" for R8A7793 (R-Car M2-N) compatible LVDS encoders
@@ -25,7 +26,7 @@ Required properties:
 - clock-names: Name of the clocks. This property is model-dependent.
   - The functional clock, which mandatory for all models, shall be listed
     first, and shall be named "fck".
-  - On R8A77990 and R8A77995, the LVDS encoder can use the EXTAL or
+  - On R8A77990, R8A77995 and R8A774C0, the LVDS encoder can use the EXTAL or
     DU_DOTCLKINx clocks. Those clocks are optional. When supplied they must be
     named "extal" and "dclkin.x" respectively, with "x" being the DU_DOTCLKIN
     numerical index.
diff --git a/Documentation/devicetree/bindings/display/renesas,du.txt b/Documentation/devicetree/bindings/display/renesas,du.txt
index 3c855d9f2719..aedb22b4d161 100644
--- a/Documentation/devicetree/bindings/display/renesas,du.txt
+++ b/Documentation/devicetree/bindings/display/renesas,du.txt
@@ -7,6 +7,7 @@ Required Properties:
     - "renesas,du-r8a7744" for R8A7744 (RZ/G1N) compatible DU
     - "renesas,du-r8a7745" for R8A7745 (RZ/G1E) compatible DU
     - "renesas,du-r8a77470" for R8A77470 (RZ/G1C) compatible DU
+    - "renesas,du-r8a774c0" for R8A774C0 (RZ/G2E) compatible DU
     - "renesas,du-r8a7779" for R8A7779 (R-Car H1) compatible DU
     - "renesas,du-r8a7790" for R8A7790 (R-Car H2) compatible DU
     - "renesas,du-r8a7791" for R8A7791 (R-Car M2-W) compatible DU
@@ -57,6 +58,7 @@ corresponding to each DU output.
  R8A7744 (RZ/G1N)       DPAD 0         LVDS 0         -              -
  R8A7745 (RZ/G1E)       DPAD 0         DPAD 1         -              -
  R8A77470 (RZ/G1C)      DPAD 0         DPAD 1         LVDS 0         -
+ R8A774C0 (RZ/G2E)      DPAD 0         LVDS 0         LVDS 1         -
  R8A7779 (R-Car H1)     DPAD 0         DPAD 1         -              -
  R8A7790 (R-Car H2)     DPAD 0         LVDS 0         LVDS 1         -
  R8A7791 (R-Car M2-W)   DPAD 0         LVDS 0         -              -
diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511.h b/drivers/gpu/drm/bridge/adv7511/adv7511.h
index 73d8ccb97742..2b6e0832d1cf 100644
--- a/drivers/gpu/drm/bridge/adv7511/adv7511.h
+++ b/drivers/gpu/drm/bridge/adv7511/adv7511.h
@@ -395,7 +395,7 @@ static inline int adv7511_cec_init(struct device *dev, struct adv7511 *adv7511)
 #ifdef CONFIG_DRM_I2C_ADV7533
 void adv7533_dsi_power_on(struct adv7511 *adv);
 void adv7533_dsi_power_off(struct adv7511 *adv);
-void adv7533_mode_set(struct adv7511 *adv, struct drm_display_mode *mode);
+void adv7533_mode_set(struct adv7511 *adv, const struct drm_display_mode *mode);
 int adv7533_patch_registers(struct adv7511 *adv);
 int adv7533_patch_cec_registers(struct adv7511 *adv);
 int adv7533_attach_dsi(struct adv7511 *adv);
@@ -411,7 +411,7 @@ static inline void adv7533_dsi_power_off(struct adv7511 *adv)
 }
 
 static inline void adv7533_mode_set(struct adv7511 *adv,
-                                    struct drm_display_mode *mode)
+                                    const struct drm_display_mode *mode)
 {
 }
 
diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
index 85c2d407a52e..d0e98caa2e2a 100644
--- a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
+++ b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
@@ -676,8 +676,8 @@ static enum drm_mode_status adv7511_mode_valid(struct adv7511 *adv7511,
 }
 
 static void adv7511_mode_set(struct adv7511 *adv7511,
-                             struct drm_display_mode *mode,
-                             struct drm_display_mode *adj_mode)
+                             const struct drm_display_mode *mode,
+                             const struct drm_display_mode *adj_mode)
 {
         unsigned int low_refresh_rate;
         unsigned int hsync_polarity = 0;
@@ -839,8 +839,8 @@ static void adv7511_bridge_disable(struct drm_bridge *bridge)
 }
 
 static void adv7511_bridge_mode_set(struct drm_bridge *bridge,
-                                    struct drm_display_mode *mode,
-                                    struct drm_display_mode *adj_mode)
+                                    const struct drm_display_mode *mode,
+                                    const struct drm_display_mode *adj_mode)
 {
         struct adv7511 *adv = bridge_to_adv7511(bridge);
 
diff --git a/drivers/gpu/drm/bridge/adv7511/adv7533.c b/drivers/gpu/drm/bridge/adv7511/adv7533.c
index 185b6d842166..5d5e7d9eded2 100644
--- a/drivers/gpu/drm/bridge/adv7511/adv7533.c
+++ b/drivers/gpu/drm/bridge/adv7511/adv7533.c
@@ -108,7 +108,7 @@ void adv7533_dsi_power_off(struct adv7511 *adv)
         regmap_write(adv->regmap_cec, 0x27, 0x0b);
 }
 
-void adv7533_mode_set(struct adv7511 *adv, struct drm_display_mode *mode)
+void adv7533_mode_set(struct adv7511 *adv, const struct drm_display_mode *mode)
 {
         struct mipi_dsi_device *dsi = adv->dsi;
         int lanes, ret;
diff --git a/drivers/gpu/drm/bridge/analogix-anx78xx.c b/drivers/gpu/drm/bridge/analogix-anx78xx.c
index f8433c93f463..705620e9f505 100644
--- a/drivers/gpu/drm/bridge/analogix-anx78xx.c
+++ b/drivers/gpu/drm/bridge/analogix-anx78xx.c
@@ -1082,8 +1082,8 @@ static void anx78xx_bridge_disable(struct drm_bridge *bridge)
 }
 
 static void anx78xx_bridge_mode_set(struct drm_bridge *bridge,
-                                    struct drm_display_mode *mode,
-                                    struct drm_display_mode *adjusted_mode)
+                                const struct drm_display_mode *mode,
+                                const struct drm_display_mode *adjusted_mode)
 {
         struct anx78xx *anx78xx = bridge_to_anx78xx(bridge);
         struct hdmi_avi_infoframe frame;
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
index 753e96129ab7..4d5b47585834 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
@@ -1361,8 +1361,8 @@ static void analogix_dp_bridge_disable(struct drm_bridge *bridge)
 }
 
 static void analogix_dp_bridge_mode_set(struct drm_bridge *bridge,
-                                        struct drm_display_mode *orig_mode,
-                                        struct drm_display_mode *mode)
+                                const struct drm_display_mode *orig_mode,
+                                const struct drm_display_mode *mode)
 {
         struct analogix_dp_device *dp = bridge->driver_private;
         struct drm_display_info *display_info = &dp->connector.display_info;
diff --git a/drivers/gpu/drm/bridge/sii902x.c b/drivers/gpu/drm/bridge/sii902x.c
index bfa902013aa4..a0b3a568dd9c 100644
--- a/drivers/gpu/drm/bridge/sii902x.c
+++ b/drivers/gpu/drm/bridge/sii902x.c
@@ -232,8 +232,8 @@ static void sii902x_bridge_enable(struct drm_bridge *bridge)
 }
 
 static void sii902x_bridge_mode_set(struct drm_bridge *bridge,
-                                    struct drm_display_mode *mode,
-                                    struct drm_display_mode *adj)
+                                    const struct drm_display_mode *mode,
+                                    const struct drm_display_mode *adj)
 {
         struct sii902x *sii902x = bridge_to_sii902x(bridge);
         struct regmap *regmap = sii902x->regmap;
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
index 64c3cf027518..4fed3eda6ded 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
@@ -1998,8 +1998,8 @@ dw_hdmi_bridge_mode_valid(struct drm_bridge *bridge,
 }
 
 static void dw_hdmi_bridge_mode_set(struct drm_bridge *bridge,
-                                    struct drm_display_mode *orig_mode,
-                                    struct drm_display_mode *mode)
+                                    const struct drm_display_mode *orig_mode,
+                                    const struct drm_display_mode *mode)
 {
         struct dw_hdmi *hdmi = bridge->driver_private;
 
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
index 2f4b145b73af..23a5977a3b0a 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
@@ -248,7 +248,7 @@ static inline bool dw_mipi_is_dual_mode(struct dw_mipi_dsi *dsi)
  * The controller should generate 2 frames before
  * preparing the peripheral.
  */
-static void dw_mipi_dsi_wait_for_two_frames(struct drm_display_mode *mode)
+static void dw_mipi_dsi_wait_for_two_frames(const struct drm_display_mode *mode)
 {
         int refresh, two_frames;
 
@@ -564,7 +564,7 @@ static void dw_mipi_dsi_init(struct dw_mipi_dsi *dsi)
 }
 
 static void dw_mipi_dsi_dpi_config(struct dw_mipi_dsi *dsi,
-                                   struct drm_display_mode *mode)
+                                   const struct drm_display_mode *mode)
 {
         u32 val = 0, color = 0;
 
@@ -607,7 +607,7 @@ static void dw_mipi_dsi_packet_handler_config(struct dw_mipi_dsi *dsi)
 }
 
 static void dw_mipi_dsi_video_packet_config(struct dw_mipi_dsi *dsi,
-                                            struct drm_display_mode *mode)
+                                            const struct drm_display_mode *mode)
 {
         /*
          * TODO dw drv improvements
@@ -642,7 +642,7 @@ static void dw_mipi_dsi_command_mode_config(struct dw_mipi_dsi *dsi)
 
 /* Get lane byte clock cycles. */
 static u32 dw_mipi_dsi_get_hcomponent_lbcc(struct dw_mipi_dsi *dsi,
-                                           struct drm_display_mode *mode,
+                                           const struct drm_display_mode *mode,
                                            u32 hcomponent)
 {
         u32 frac, lbcc;
@@ -658,7 +658,7 @@ static u32 dw_mipi_dsi_get_hcomponent_lbcc(struct dw_mipi_dsi *dsi,
 }
 
 static void dw_mipi_dsi_line_timer_config(struct dw_mipi_dsi *dsi,
-                                          struct drm_display_mode *mode)
+                                          const struct drm_display_mode *mode)
 {
         u32 htotal, hsa, hbp, lbcc;
 
@@ -681,7 +681,7 @@ static void dw_mipi_dsi_line_timer_config(struct dw_mipi_dsi *dsi,
 }
 
 static void dw_mipi_dsi_vertical_timing_config(struct dw_mipi_dsi *dsi,
-                                               struct drm_display_mode *mode)
+                                        const struct drm_display_mode *mode)
 {
         u32 vactive, vsa, vfp, vbp;
 
@@ -818,7 +818,7 @@ static unsigned int dw_mipi_dsi_get_lanes(struct dw_mipi_dsi *dsi)
 }
 
 static void dw_mipi_dsi_mode_set(struct dw_mipi_dsi *dsi,
-                                struct drm_display_mode *adjusted_mode)
+                                 const struct drm_display_mode *adjusted_mode)
 {
         const struct dw_mipi_dsi_phy_ops *phy_ops = dsi->plat_data->phy_ops;
         void *priv_data = dsi->plat_data->priv_data;
@@ -861,8 +861,8 @@ static void dw_mipi_dsi_mode_set(struct dw_mipi_dsi *dsi,
 }
 
 static void dw_mipi_dsi_bridge_mode_set(struct drm_bridge *bridge,
-                                        struct drm_display_mode *mode,
-                                        struct drm_display_mode *adjusted_mode)
+                                        const struct drm_display_mode *mode,
+                                        const struct drm_display_mode *adjusted_mode)
 {
         struct dw_mipi_dsi *dsi = bridge_to_dsi(bridge);
 
diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c
index 8e28e738cb52..4df07f4cbff5 100644
--- a/drivers/gpu/drm/bridge/tc358767.c
+++ b/drivers/gpu/drm/bridge/tc358767.c
@@ -203,7 +203,7 @@ struct tc_data {
         /* display edid */
         struct edid             *edid;
         /* current mode */
-        struct drm_display_mode *mode;
+        const struct drm_display_mode   *mode;
 
         u32                     rev;
         u8                      assr;
@@ -648,7 +648,8 @@ err_dpcd_read:
         return ret;
 }
 
-static int tc_set_video_mode(struct tc_data *tc, struct drm_display_mode *mode)
+static int tc_set_video_mode(struct tc_data *tc,
+                             const struct drm_display_mode *mode)
 {
         int ret;
         int vid_sync_dly;
@@ -1113,8 +1114,8 @@ static enum drm_mode_status tc_connector_mode_valid(struct drm_connector *connec
 }
 
 static void tc_bridge_mode_set(struct drm_bridge *bridge,
-                               struct drm_display_mode *mode,
-                               struct drm_display_mode *adj)
+                               const struct drm_display_mode *mode,
+                               const struct drm_display_mode *adj)
 {
         struct tc_data *tc = bridge_to_tc(bridge);
 
diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c
index ba7025041e46..138b2711d389 100644
--- a/drivers/gpu/drm/drm_bridge.c
+++ b/drivers/gpu/drm/drm_bridge.c
@@ -294,8 +294,8 @@ EXPORT_SYMBOL(drm_bridge_post_disable);
  * Note: the bridge passed should be the one closest to the encoder
  */
 void drm_bridge_mode_set(struct drm_bridge *bridge,
-                        struct drm_display_mode *mode,
-                        struct drm_display_mode *adjusted_mode)
+                         const struct drm_display_mode *mode,
+                         const struct drm_display_mode *adjusted_mode)
 {
         if (!bridge)
                 return;
diff --git a/drivers/gpu/drm/exynos/exynos_drm_mic.c b/drivers/gpu/drm/exynos/exynos_drm_mic.c
index 2fd299a58297..dd02e8a323ef 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_mic.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_mic.c
@@ -246,8 +246,8 @@ already_disabled:
 }
 
 static void mic_mode_set(struct drm_bridge *bridge,
-                        struct drm_display_mode *mode,
-                        struct drm_display_mode *adjusted_mode)
+                         const struct drm_display_mode *mode,
+                         const struct drm_display_mode *adjusted_mode)
 {
         struct exynos_mic *mic = bridge->driver_private;
 
diff --git a/drivers/gpu/drm/i2c/tda998x_drv.c b/drivers/gpu/drm/i2c/tda998x_drv.c
index a7c39f39793f..a6ba461749b2 100644
--- a/drivers/gpu/drm/i2c/tda998x_drv.c
+++ b/drivers/gpu/drm/i2c/tda998x_drv.c
@@ -845,7 +845,7 @@ static int tda998x_write_aif(struct tda998x_priv *priv,
 }
 
 static void
-tda998x_write_avi(struct tda998x_priv *priv, struct drm_display_mode *mode)
+tda998x_write_avi(struct tda998x_priv *priv, const struct drm_display_mode *mode)
 {
         union hdmi_infoframe frame;
 
@@ -1339,8 +1339,8 @@ static void tda998x_bridge_disable(struct drm_bridge *bridge)
 }
 
 static void tda998x_bridge_mode_set(struct drm_bridge *bridge,
-                                    struct drm_display_mode *mode,
-                                    struct drm_display_mode *adjusted_mode)
+                                    const struct drm_display_mode *mode,
+                                    const struct drm_display_mode *adjusted_mode)
 {
         struct tda998x_priv *priv = bridge_to_tda998x_priv(bridge);
         unsigned long tmds_clock;
diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c
index 862f3ec22131..994f0d8646bf 100644
--- a/drivers/gpu/drm/mediatek/mtk_hdmi.c
+++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c
@@ -1370,8 +1370,8 @@ static void mtk_hdmi_bridge_post_disable(struct drm_bridge *bridge)
 }
 
 static void mtk_hdmi_bridge_mode_set(struct drm_bridge *bridge,
-                                     struct drm_display_mode *mode,
-                                     struct drm_display_mode *adjusted_mode)
+                                const struct drm_display_mode *mode,
+                                const struct drm_display_mode *adjusted_mode)
 {
         struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
 
diff --git a/drivers/gpu/drm/msm/dsi/dsi.h b/drivers/gpu/drm/msm/dsi/dsi.h
index 08f3fc6771b7..9c6b31c2d79f 100644
--- a/drivers/gpu/drm/msm/dsi/dsi.h
+++ b/drivers/gpu/drm/msm/dsi/dsi.h
@@ -168,7 +168,7 @@ int msm_dsi_host_power_on(struct mipi_dsi_host *host,
                         bool is_dual_dsi);
 int msm_dsi_host_power_off(struct mipi_dsi_host *host);
 int msm_dsi_host_set_display_mode(struct mipi_dsi_host *host,
-                                        struct drm_display_mode *mode);
+                                  const struct drm_display_mode *mode);
 struct drm_panel *msm_dsi_host_get_panel(struct mipi_dsi_host *host,
                                         unsigned long *panel_flags);
 struct drm_bridge *msm_dsi_host_get_bridge(struct mipi_dsi_host *host);
diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
index 38e481d2d606..610183db1daf 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -2424,7 +2424,7 @@ unlock_ret:
 }
 
 int msm_dsi_host_set_display_mode(struct mipi_dsi_host *host,
-                                        struct drm_display_mode *mode)
+                                  const struct drm_display_mode *mode)
 {
         struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
 
diff --git a/drivers/gpu/drm/msm/dsi/dsi_manager.c b/drivers/gpu/drm/msm/dsi/dsi_manager.c
index 80aa6344185e..bdb063b2dc4a 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_manager.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_manager.c
@@ -527,8 +527,8 @@ disable_phy:
 }
 
 static void dsi_mgr_bridge_mode_set(struct drm_bridge *bridge,
-                struct drm_display_mode *mode,
-                struct drm_display_mode *adjusted_mode)
+                const struct drm_display_mode *mode,
+                const struct drm_display_mode *adjusted_mode)
 {
         int id = dsi_mgr_bridge_get_id(bridge);
         struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
diff --git a/drivers/gpu/drm/msm/edp/edp_bridge.c b/drivers/gpu/drm/msm/edp/edp_bridge.c
index 931a5c97cccf..86366ba03e60 100644
--- a/drivers/gpu/drm/msm/edp/edp_bridge.c
+++ b/drivers/gpu/drm/msm/edp/edp_bridge.c
@@ -52,8 +52,8 @@ static void edp_bridge_post_disable(struct drm_bridge *bridge)
 }
 
 static void edp_bridge_mode_set(struct drm_bridge *bridge,
-                struct drm_display_mode *mode,
-                struct drm_display_mode *adjusted_mode)
+                const struct drm_display_mode *mode,
+                const struct drm_display_mode *adjusted_mode)
 {
         struct drm_device *dev = bridge->dev;
         struct drm_connector *connector;
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
index 98d61c690260..b42feb80531b 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
@@ -207,8 +207,8 @@ static void msm_hdmi_bridge_post_disable(struct drm_bridge *bridge)
 }
 
 static void msm_hdmi_bridge_mode_set(struct drm_bridge *bridge,
-                 struct drm_display_mode *mode,
-                 struct drm_display_mode *adjusted_mode)
+                 const struct drm_display_mode *mode,
+                 const struct drm_display_mode *adjusted_mode)
 {
         struct hdmi_bridge *hdmi_bridge = to_hdmi_bridge(bridge);
         struct hdmi *hdmi = hdmi_bridge->hdmi;
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
index 90dacab67be5..771b460c7216 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
@@ -11,7 +11,6 @@
 #include <linux/mutex.h>
 #include <linux/sys_soc.h>
 
-#include <drm/drmP.h>
 #include <drm/drm_atomic.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_crtc.h>
@@ -22,6 +21,7 @@
 
 #include "rcar_du_crtc.h"
 #include "rcar_du_drv.h"
+#include "rcar_du_encoder.h"
 #include "rcar_du_kms.h"
 #include "rcar_du_plane.h"
 #include "rcar_du_regs.h"
@@ -316,26 +316,6 @@ static void rcar_du_crtc_set_display_timing(struct rcar_du_crtc *rcrtc)
         rcar_du_crtc_write(rcrtc, DEWR,  mode->hdisplay);
 }
 
-void rcar_du_crtc_route_output(struct drm_crtc *crtc,
-                               enum rcar_du_output output)
-{
-        struct rcar_du_crtc *rcrtc = to_rcar_crtc(crtc);
-        struct rcar_du_device *rcdu = rcrtc->group->dev;
-
-        /*
-         * Store the route from the CRTC output to the DU output. The DU will be
-         * configured when starting the CRTC.
-         */
-        rcrtc->outputs |= BIT(output);
-
-        /*
-         * Store RGB routing to DPAD0, the hardware will be configured when
-         * starting the CRTC.
-         */
-        if (output == RCAR_DU_OUTPUT_DPAD0)
-                rcdu->dpad0_source = rcrtc->index;
-}
-
 static unsigned int plane_zpos(struct rcar_du_plane *plane)
 {
         return plane->plane.state->normalized_zpos;
@@ -655,6 +635,24 @@ static void rcar_du_crtc_stop(struct rcar_du_crtc *rcrtc)
  * CRTC Functions
  */
 
+static int rcar_du_crtc_atomic_check(struct drm_crtc *crtc,
+                                     struct drm_crtc_state *state)
+{
+        struct rcar_du_crtc_state *rstate = to_rcar_crtc_state(state);
+        struct drm_encoder *encoder;
+
+        /* Store the routes from the CRTC output to the DU outputs. */
+        rstate->outputs = 0;
+
+        drm_for_each_encoder_mask(encoder, crtc->dev, state->encoder_mask) {
+                struct rcar_du_encoder *renc = to_rcar_encoder(encoder);
+
+                rstate->outputs |= BIT(renc->output);
+        }
+
+        return 0;
+}
+
 static void rcar_du_crtc_atomic_enable(struct drm_crtc *crtc,
                                        struct drm_crtc_state *old_state)
 {
@@ -678,8 +676,6 @@ static void rcar_du_crtc_atomic_disable(struct drm_crtc *crtc,
                 crtc->state->event = NULL;
         }
         spin_unlock_irq(&crtc->dev->event_lock);
-
-        rcrtc->outputs = 0;
 }
 
 static void rcar_du_crtc_atomic_begin(struct drm_crtc *crtc,
@@ -755,6 +751,7 @@ enum drm_mode_status rcar_du_crtc_mode_valid(struct drm_crtc *crtc,
 }
 
 static const struct drm_crtc_helper_funcs crtc_helper_funcs = {
+        .atomic_check = rcar_du_crtc_atomic_check,
         .atomic_begin = rcar_du_crtc_atomic_begin,
         .atomic_flush = rcar_du_crtc_atomic_flush,
         .atomic_enable = rcar_du_crtc_atomic_enable,
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_crtc.h b/drivers/gpu/drm/rcar-du/rcar_du_crtc.h
index 59ac6e7d22c9..bcb35b0b7612 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.h
+++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.h
@@ -14,7 +14,6 @@
 #include <linux/spinlock.h>
 #include <linux/wait.h>
 
-#include <drm/drmP.h>
 #include <drm/drm_crtc.h>
 
 #include <media/vsp1.h>
@@ -37,7 +36,6 @@ struct rcar_du_vsp;
  * @vblank_lock: protects vblank_wait and vblank_count
  * @vblank_wait: wait queue used to signal vertical blanking
  * @vblank_count: number of vertical blanking interrupts to wait for
- * @outputs: bitmask of the outputs (enum rcar_du_output) driven by this CRTC
  * @group: CRTC group this CRTC belongs to
  * @vsp: VSP feeding video to this CRTC
  * @vsp_pipe: index of the VSP pipeline feeding video to this CRTC
@@ -61,8 +59,6 @@ struct rcar_du_crtc {
         wait_queue_head_t vblank_wait;
         unsigned int vblank_count;
 
-        unsigned int outputs;
-
         struct rcar_du_group *group;
         struct rcar_du_vsp *vsp;
         unsigned int vsp_pipe;
@@ -77,11 +73,13 @@ struct rcar_du_crtc {
  * struct rcar_du_crtc_state - Driver-specific CRTC state
  * @state: base DRM CRTC state
  * @crc: CRC computation configuration
+ * @outputs: bitmask of the outputs (enum rcar_du_output) driven by this CRTC
  */
 struct rcar_du_crtc_state {
         struct drm_crtc_state state;
 
         struct vsp1_du_crc_config crc;
+        unsigned int outputs;
 };
 
 #define to_rcar_crtc_state(s) container_of(s, struct rcar_du_crtc_state, state)
@@ -102,8 +100,6 @@ int rcar_du_crtc_create(struct rcar_du_group *rgrp, unsigned int swindex,
 void rcar_du_crtc_suspend(struct rcar_du_crtc *rcrtc);
 void rcar_du_crtc_resume(struct rcar_du_crtc *rcrtc);
 
-void rcar_du_crtc_route_output(struct drm_crtc *crtc,
-                               enum rcar_du_output output);
 void rcar_du_crtc_finish_page_flip(struct rcar_du_crtc *rcrtc);
 
 void rcar_du_crtc_dsysr_clr_set(struct rcar_du_crtc *rcrtc, u32 clr, u32 set);
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
index f50a3b1864bb..d1f305694367 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
@@ -17,7 +17,6 @@
 #include <linux/slab.h>
 #include <linux/wait.h>
 
-#include <drm/drmP.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_crtc_helper.h>
 #include <drm/drm_fb_cma_helper.h>
@@ -36,7 +35,6 @@
 static const struct rcar_du_device_info rzg1_du_r8a7743_info = {
         .gen = 2,
         .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
-                  | RCAR_DU_FEATURE_EXT_CTRL_REGS
                   | RCAR_DU_FEATURE_INTERLACED
                   | RCAR_DU_FEATURE_TVM_SYNC,
         .channels_mask = BIT(1) | BIT(0),
@@ -59,7 +57,6 @@ static const struct rcar_du_device_info rzg1_du_r8a7743_info = {
 static const struct rcar_du_device_info rzg1_du_r8a7745_info = {
         .gen = 2,
         .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
-                  | RCAR_DU_FEATURE_EXT_CTRL_REGS
                   | RCAR_DU_FEATURE_INTERLACED
                   | RCAR_DU_FEATURE_TVM_SYNC,
         .channels_mask = BIT(1) | BIT(0),
@@ -81,7 +78,6 @@ static const struct rcar_du_device_info rzg1_du_r8a7745_info = {
 static const struct rcar_du_device_info rzg1_du_r8a77470_info = {
         .gen = 2,
         .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
-                  | RCAR_DU_FEATURE_EXT_CTRL_REGS
                   | RCAR_DU_FEATURE_INTERLACED
                   | RCAR_DU_FEATURE_TVM_SYNC,
         .channels_mask = BIT(1) | BIT(0),
@@ -105,8 +101,34 @@ static const struct rcar_du_device_info rzg1_du_r8a77470_info = {
         },
 };
 
+static const struct rcar_du_device_info rcar_du_r8a774c0_info = {
+        .gen = 3,
+        .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
+                  | RCAR_DU_FEATURE_VSP1_SOURCE,
+        .channels_mask = BIT(1) | BIT(0),
+        .routes = {
+                /*
+                 * R8A774C0 has one RGB output and two LVDS outputs
+                 */
+                [RCAR_DU_OUTPUT_DPAD0] = {
+                        .possible_crtcs = BIT(0) | BIT(1),
+                        .port = 0,
+                },
+                [RCAR_DU_OUTPUT_LVDS0] = {
+                        .possible_crtcs = BIT(0),
+                        .port = 1,
+                },
+                [RCAR_DU_OUTPUT_LVDS1] = {
+                        .possible_crtcs = BIT(1),
+                        .port = 2,
+                },
+        },
+        .num_lvds = 2,
+        .lvds_clk_mask =  BIT(1) | BIT(0),
+};
+
 static const struct rcar_du_device_info rcar_du_r8a7779_info = {
-        .gen = 2,
+        .gen = 1,
         .features = RCAR_DU_FEATURE_INTERLACED
                   | RCAR_DU_FEATURE_TVM_SYNC,
         .channels_mask = BIT(1) | BIT(0),
@@ -129,7 +151,6 @@ static const struct rcar_du_device_info rcar_du_r8a7779_info = {
 static const struct rcar_du_device_info rcar_du_r8a7790_info = {
         .gen = 2,
         .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
-                  | RCAR_DU_FEATURE_EXT_CTRL_REGS
                   | RCAR_DU_FEATURE_INTERLACED
                   | RCAR_DU_FEATURE_TVM_SYNC,
         .quirks = RCAR_DU_QUIRK_ALIGN_128B,
@@ -159,7 +180,6 @@ static const struct rcar_du_device_info rcar_du_r8a7790_info = {
 static const struct rcar_du_device_info rcar_du_r8a7791_info = {
         .gen = 2,
         .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
-                  | RCAR_DU_FEATURE_EXT_CTRL_REGS
                   | RCAR_DU_FEATURE_INTERLACED
                   | RCAR_DU_FEATURE_TVM_SYNC,
         .channels_mask = BIT(1) | BIT(0),
@@ -183,7 +203,6 @@ static const struct rcar_du_device_info rcar_du_r8a7791_info = {
 static const struct rcar_du_device_info rcar_du_r8a7792_info = {
         .gen = 2,
         .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
-                  | RCAR_DU_FEATURE_EXT_CTRL_REGS
                   | RCAR_DU_FEATURE_INTERLACED
                   | RCAR_DU_FEATURE_TVM_SYNC,
         .channels_mask = BIT(1) | BIT(0),
@@ -203,7 +222,6 @@ static const struct rcar_du_device_info rcar_du_r8a7792_info = {
 static const struct rcar_du_device_info rcar_du_r8a7794_info = {
         .gen = 2,
         .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
-                  | RCAR_DU_FEATURE_EXT_CTRL_REGS
                   | RCAR_DU_FEATURE_INTERLACED
                   | RCAR_DU_FEATURE_TVM_SYNC,
         .channels_mask = BIT(1) | BIT(0),
@@ -226,7 +244,6 @@ static const struct rcar_du_device_info rcar_du_r8a7794_info = {
 static const struct rcar_du_device_info rcar_du_r8a7795_info = {
         .gen = 3,
         .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
-                  | RCAR_DU_FEATURE_EXT_CTRL_REGS
                   | RCAR_DU_FEATURE_VSP1_SOURCE
                   | RCAR_DU_FEATURE_INTERLACED
                   | RCAR_DU_FEATURE_TVM_SYNC,
@@ -260,7 +277,6 @@ static const struct rcar_du_device_info rcar_du_r8a7795_info = {
 static const struct rcar_du_device_info rcar_du_r8a7796_info = {
         .gen = 3,
         .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
-                  | RCAR_DU_FEATURE_EXT_CTRL_REGS
                   | RCAR_DU_FEATURE_VSP1_SOURCE
                   | RCAR_DU_FEATURE_INTERLACED
                   | RCAR_DU_FEATURE_TVM_SYNC,
@@ -290,7 +306,6 @@ static const struct rcar_du_device_info rcar_du_r8a7796_info = {
 static const struct rcar_du_device_info rcar_du_r8a77965_info = {
         .gen = 3,
         .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
-                  | RCAR_DU_FEATURE_EXT_CTRL_REGS
                   | RCAR_DU_FEATURE_VSP1_SOURCE
                   | RCAR_DU_FEATURE_INTERLACED
                   | RCAR_DU_FEATURE_TVM_SYNC,
@@ -320,7 +335,6 @@ static const struct rcar_du_device_info rcar_du_r8a77965_info = {
 static const struct rcar_du_device_info rcar_du_r8a77970_info = {
         .gen = 3,
         .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
-                  | RCAR_DU_FEATURE_EXT_CTRL_REGS
                   | RCAR_DU_FEATURE_VSP1_SOURCE
                   | RCAR_DU_FEATURE_INTERLACED
                   | RCAR_DU_FEATURE_TVM_SYNC,
@@ -342,7 +356,6 @@ static const struct rcar_du_device_info rcar_du_r8a77970_info = {
 static const struct rcar_du_device_info rcar_du_r8a7799x_info = {
         .gen = 3,
         .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
-                  | RCAR_DU_FEATURE_EXT_CTRL_REGS
                   | RCAR_DU_FEATURE_VSP1_SOURCE,
         .channels_mask = BIT(1) | BIT(0),
         .routes = {
@@ -372,6 +385,7 @@ static const struct of_device_id rcar_du_of_table[] = {
         { .compatible = "renesas,du-r8a7744", .data = &rzg1_du_r8a7743_info },
         { .compatible = "renesas,du-r8a7745", .data = &rzg1_du_r8a7745_info },
         { .compatible = "renesas,du-r8a77470", .data = &rzg1_du_r8a77470_info },
+        { .compatible = "renesas,du-r8a774c0", .data = &rcar_du_r8a774c0_info },
         { .compatible = "renesas,du-r8a7779", .data = &rcar_du_r8a7779_info },
         { .compatible = "renesas,du-r8a7790", .data = &rcar_du_r8a7790_info },
         { .compatible = "renesas,du-r8a7791", .data = &rcar_du_r8a7791_info },
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.h b/drivers/gpu/drm/rcar-du/rcar_du_drv.h
index a68da79b424e..6c187d0bf7c2 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_drv.h
+++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.h
@@ -20,13 +20,13 @@
 struct clk;
 struct device;
 struct drm_device;
+struct drm_property;
 struct rcar_du_device;
 
 #define RCAR_DU_FEATURE_CRTC_IRQ_CLOCK  BIT(0)  /* Per-CRTC IRQ and clock */
-#define RCAR_DU_FEATURE_EXT_CTRL_REGS   BIT(1)  /* Has extended control registers */
-#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_VSP1_SOURCE     BIT(1)  /* Has inputs from VSP1 */
+#define RCAR_DU_FEATURE_INTERLACED      BIT(2)  /* HW supports interlaced */
+#define RCAR_DU_FEATURE_TVM_SYNC        BIT(3)  /* Has TV switch/sync modes */
 
 #define RCAR_DU_QUIRK_ALIGN_128B        BIT(0)  /* Align pitches to 128 bytes */
 
@@ -89,6 +89,7 @@ struct rcar_du_device {
         } props;
 
         unsigned int dpad0_source;
+        unsigned int dpad1_source;
         unsigned int vspd1_sink;
 };
 
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_encoder.c b/drivers/gpu/drm/rcar-du/rcar_du_encoder.c
index 1877764bd6d9..f16209499117 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_encoder.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_encoder.c
@@ -9,7 +9,6 @@
 
 #include <linux/export.h>
 
-#include <drm/drmP.h>
 #include <drm/drm_crtc.h>
 #include <drm/drm_crtc_helper.h>
 #include <drm/drm_panel.h>
@@ -22,17 +21,7 @@
  * Encoder
  */
 
-static void rcar_du_encoder_mode_set(struct drm_encoder *encoder,
-                                     struct drm_crtc_state *crtc_state,
-                                     struct drm_connector_state *conn_state)
-{
-        struct rcar_du_encoder *renc = to_rcar_encoder(encoder);
-
-        rcar_du_crtc_route_output(crtc_state->crtc, renc->output);
-}
-
 static const struct drm_encoder_helper_funcs encoder_helper_funcs = {
-        .atomic_mode_set = rcar_du_encoder_mode_set,
 };
 
 static const struct drm_encoder_funcs encoder_funcs = {
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_encoder.h b/drivers/gpu/drm/rcar-du/rcar_du_encoder.h
index ce3cbc85695e..552f2a02e5b5 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_encoder.h
+++ b/drivers/gpu/drm/rcar-du/rcar_du_encoder.h
@@ -10,10 +10,8 @@
 #ifndef __RCAR_DU_ENCODER_H__
 #define __RCAR_DU_ENCODER_H__
 
-#include <drm/drm_crtc.h>
 #include <drm/drm_encoder.h>
 
-struct drm_panel;
 struct rcar_du_device;
 
 struct rcar_du_encoder {
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_group.c b/drivers/gpu/drm/rcar-du/rcar_du_group.c
index cebf313c6e1f..9eee47969e77 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_group.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_group.c
@@ -147,7 +147,7 @@ static void rcar_du_group_setup(struct rcar_du_group *rgrp)
 
         rcar_du_group_setup_pins(rgrp);
 
-        if (rcar_du_has(rgrp->dev, RCAR_DU_FEATURE_EXT_CTRL_REGS)) {
+        if (rcdu->info->gen >= 2) {
                 rcar_du_group_setup_defr8(rgrp);
                 rcar_du_group_setup_didsr(rgrp);
         }
@@ -262,7 +262,7 @@ int rcar_du_set_dpad0_vsp1_routing(struct rcar_du_device *rcdu)
         unsigned int index;
         int ret;
 
-        if (!rcar_du_has(rcdu, RCAR_DU_FEATURE_EXT_CTRL_REGS))
+        if (rcdu->info->gen < 2)
                 return 0;
 
         /*
@@ -287,9 +287,50 @@ int rcar_du_set_dpad0_vsp1_routing(struct rcar_du_device *rcdu)
         return 0;
 }
 
+static void rcar_du_group_set_dpad_levels(struct rcar_du_group *rgrp)
+{
+        static const u32 doflr_values[2] = {
+                DOFLR_HSYCFL0 | DOFLR_VSYCFL0 | DOFLR_ODDFL0 |
+                DOFLR_DISPFL0 | DOFLR_CDEFL0  | DOFLR_RGBFL0,
+                DOFLR_HSYCFL1 | DOFLR_VSYCFL1 | DOFLR_ODDFL1 |
+                DOFLR_DISPFL1 | DOFLR_CDEFL1  | DOFLR_RGBFL1,
+        };
+        static const u32 dpad_mask = BIT(RCAR_DU_OUTPUT_DPAD1)
+                                   | BIT(RCAR_DU_OUTPUT_DPAD0);
+        struct rcar_du_device *rcdu = rgrp->dev;
+        u32 doflr = DOFLR_CODE;
+        unsigned int i;
+
+        if (rcdu->info->gen < 2)
+                return;
+
+        /*
+         * The DPAD outputs can't be controlled directly. However, the parallel
+         * output of the DU channels routed to DPAD can be set to fixed levels
+         * through the DOFLR group register. Use this to turn the DPAD on or off
+         * by driving fixed low-level signals at the output of any DU channel
+         * not routed to a DPAD output. This doesn't affect the DU output
+         * signals going to other outputs, such as the internal LVDS and HDMI
+         * encoders.
+         */
+
+        for (i = 0; i < rgrp->num_crtcs; ++i) {
+                struct rcar_du_crtc_state *rstate;
+                struct rcar_du_crtc *rcrtc;
+
+                rcrtc = &rcdu->crtcs[rgrp->index * 2 + i];
+                rstate = to_rcar_crtc_state(rcrtc->crtc.state);
+
+                if (!(rstate->outputs & dpad_mask))
+                        doflr |= doflr_values[i];
+        }
+
+        rcar_du_group_write(rgrp, DOFLR, doflr);
+}
+
 int rcar_du_group_set_routing(struct rcar_du_group *rgrp)
 {
-        struct rcar_du_crtc *crtc0 = &rgrp->dev->crtcs[rgrp->index * 2];
+        struct rcar_du_device *rcdu = rgrp->dev;
         u32 dorcr = rcar_du_group_read(rgrp, DORCR);
 
         dorcr &= ~(DORCR_PG2T | DORCR_DK2S | DORCR_PG2D_MASK);
@@ -299,12 +340,14 @@ int rcar_du_group_set_routing(struct rcar_du_group *rgrp)
          * CRTC 1 in all other cases to avoid cloning CRTC 0 to DPAD0 and DPAD1
          * by default.
          */
-        if (crtc0->outputs & BIT(RCAR_DU_OUTPUT_DPAD1))
+        if (rcdu->dpad1_source == rgrp->index * 2)
                 dorcr |= DORCR_PG2D_DS1;
         else
                 dorcr |= DORCR_PG2T | DORCR_DK2S | DORCR_PG2D_DS2;
 
         rcar_du_group_write(rgrp, DORCR, dorcr);
 
+        rcar_du_group_set_dpad_levels(rgrp);
+
         return rcar_du_set_dpad0_vsp1_routing(rgrp->dev);
 }
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.c b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
index 9c7007d45408..e4b248e368d6 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_kms.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
@@ -7,7 +7,6 @@
  * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
  */
 
-#include <drm/drmP.h>
 #include <drm/drm_atomic.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_crtc.h>
@@ -278,6 +277,28 @@ static int rcar_du_atomic_check(struct drm_device *dev,
 static void rcar_du_atomic_commit_tail(struct drm_atomic_state *old_state)
 {
         struct drm_device *dev = old_state->dev;
+        struct rcar_du_device *rcdu = dev->dev_private;
+        struct drm_crtc_state *crtc_state;
+        struct drm_crtc *crtc;
+        unsigned int i;
+
+        /*
+         * Store RGB routing to DPAD0 and DPAD1, the hardware will be configured
+         * when starting the CRTCs.
+         */
+        rcdu->dpad1_source = -1;
+
+        for_each_new_crtc_in_state(old_state, crtc, crtc_state, i) {
+                struct rcar_du_crtc_state *rcrtc_state =
+                        to_rcar_crtc_state(crtc_state);
+                struct rcar_du_crtc *rcrtc = to_rcar_crtc(crtc);
+
+                if (rcrtc_state->outputs & BIT(RCAR_DU_OUTPUT_DPAD0))
+                        rcdu->dpad0_source = rcrtc->index;
+
+                if (rcrtc_state->outputs & BIT(RCAR_DU_OUTPUT_DPAD1))
+                        rcdu->dpad1_source = rcrtc->index;
+        }
 
         /* Apply the atomic update. */
         drm_atomic_helper_commit_modeset_disables(dev, old_state);
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_of_lvds_r8a7790.dts b/drivers/gpu/drm/rcar-du/rcar_du_of_lvds_r8a7790.dts
index 579753e04f3b..8bee4e787a0a 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_of_lvds_r8a7790.dts
+++ b/drivers/gpu/drm/rcar-du/rcar_du_of_lvds_r8a7790.dts
@@ -7,70 +7,63 @@
 
 /dts-v1/;
 /plugin/;
-/ {
-        fragment@0 {
-                target-path = "/";
-                __overlay__ {
-                        #address-cells = <2>;
-                        #size-cells = <2>;
 
-                        lvds@feb90000 {
-                                compatible = "renesas,r8a7790-lvds";
-                                reg = <0 0xfeb90000 0 0x1c>;
+&{/} {
+        #address-cells = <2>;
+        #size-cells = <2>;
 
-                                ports {
-                                        #address-cells = <1>;
-                                        #size-cells = <0>;
+        lvds@feb90000 {
+                compatible = "renesas,r8a7790-lvds";
+                reg = <0 0xfeb90000 0 0x1c>;
 
-                                        port@0 {
-                                                reg = <0>;
-                                                lvds0_input: endpoint {
-                                                };
-                                        };
-                                        port@1 {
-                                                reg = <1>;
-                                                lvds0_out: endpoint {
-                                                };
-                                        };
+                ports {
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+
+                        port@0 {
+                                reg = <0>;
+                                lvds0_input: endpoint {
                                 };
                         };
-
-                        lvds@feb94000 {
-                                compatible = "renesas,r8a7790-lvds";
-                                reg = <0 0xfeb94000 0 0x1c>;
-
-                                ports {
-                                        #address-cells = <1>;
-                                        #size-cells = <0>;
-
-                                        port@0 {
-                                                reg = <0>;
-                                                lvds1_input: endpoint {
-                                                };
-                                        };
-                                        port@1 {
-                                                reg = <1>;
-                                                lvds1_out: endpoint {
-                                                };
-                                        };
+                        port@1 {
+                                reg = <1>;
+                                lvds0_out: endpoint {
                                 };
                         };
                 };
         };
 
-        fragment@1 {
-                target-path = "/display@feb00000/ports";
-                __overlay__ {
-                        port@1 {
-                                endpoint {
-                                        remote-endpoint = <&lvds0_input>;
+        lvds@feb94000 {
+                compatible = "renesas,r8a7790-lvds";
+                reg = <0 0xfeb94000 0 0x1c>;
+
+                ports {
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+
+                        port@0 {
+                                reg = <0>;
+                                lvds1_input: endpoint {
                                 };
                         };
-                        port@2 {
-                                endpoint {
-                                        remote-endpoint = <&lvds1_input>;
+                        port@1 {
+                                reg = <1>;
+                                lvds1_out: endpoint {
                                 };
                         };
                 };
         };
 };
+
+&{/display@feb00000/ports} {
+        port@1 {
+                endpoint {
+                        remote-endpoint = <&lvds0_input>;
+                };
+        };
+        port@2 {
+                endpoint {
+                        remote-endpoint = <&lvds1_input>;
+                };
+        };
+};
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_of_lvds_r8a7791.dts b/drivers/gpu/drm/rcar-du/rcar_du_of_lvds_r8a7791.dts
index cb9da1f3942b..92c0509971ec 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_of_lvds_r8a7791.dts
+++ b/drivers/gpu/drm/rcar-du/rcar_du_of_lvds_r8a7791.dts
@@ -7,44 +7,37 @@
 
 /dts-v1/;
 /plugin/;
-/ {
-        fragment@0 {
-                target-path = "/";
-                __overlay__ {
-                        #address-cells = <2>;
-                        #size-cells = <2>;
 
-                        lvds@feb90000 {
-                                compatible = "renesas,r8a7791-lvds";
-                                reg = <0 0xfeb90000 0 0x1c>;
+&{/} {
+        #address-cells = <2>;
+        #size-cells = <2>;
 
-                                ports {
-                                        #address-cells = <1>;
-                                        #size-cells = <0>;
+        lvds@feb90000 {
+                compatible = "renesas,r8a7791-lvds";
+                reg = <0 0xfeb90000 0 0x1c>;
 
-                                        port@0 {
-                                                reg = <0>;
-                                                lvds0_input: endpoint {
-                                                };
-                                        };
-                                        port@1 {
-                                                reg = <1>;
-                                                lvds0_out: endpoint {
-                                                };
-                                        };
+                ports {
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+
+                        port@0 {
+                                reg = <0>;
+                                lvds0_input: endpoint {
                                 };
                         };
-                };
-        };
-
-        fragment@1 {
-                target-path = "/display@feb00000/ports";
-                __overlay__ {
                         port@1 {
-                                endpoint {
-                                        remote-endpoint = <&lvds0_input>;
+                                reg = <1>;
+                                lvds0_out: endpoint {
                                 };
                         };
                 };
         };
 };
+
+&{/display@feb00000/ports} {
+        port@1 {
+                endpoint {
+                        remote-endpoint = <&lvds0_input>;
+                };
+        };
+};
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_of_lvds_r8a7793.dts b/drivers/gpu/drm/rcar-du/rcar_du_of_lvds_r8a7793.dts
index e7b8804dc3c1..c8b93f21de0f 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_of_lvds_r8a7793.dts
+++ b/drivers/gpu/drm/rcar-du/rcar_du_of_lvds_r8a7793.dts
@@ -7,44 +7,37 @@
 
 /dts-v1/;
 /plugin/;
-/ {
-        fragment@0 {
-                target-path = "/";
-                __overlay__ {
-                        #address-cells = <2>;
-                        #size-cells = <2>;
 
-                        lvds@feb90000 {
-                                compatible = "renesas,r8a7793-lvds";
-                                reg = <0 0xfeb90000 0 0x1c>;
+&{/} {
+        #address-cells = <2>;
+        #size-cells = <2>;
 
-                                ports {
-                                        #address-cells = <1>;
-                                        #size-cells = <0>;
+        lvds@feb90000 {
+                compatible = "renesas,r8a7793-lvds";
+                reg = <0 0xfeb90000 0 0x1c>;
 
-                                        port@0 {
-                                                reg = <0>;
-                                                lvds0_input: endpoint {
-                                                };
-                                        };
-                                        port@1 {
-                                                reg = <1>;
-                                                lvds0_out: endpoint {
-                                                };
-                                        };
+                ports {
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+
+                        port@0 {
+                                reg = <0>;
+                                lvds0_input: endpoint {
                                 };
                         };
-                };
-        };
-
-        fragment@1 {
-                target-path = "/display@feb00000/ports";
-                __overlay__ {
                         port@1 {
-                                endpoint {
-                                        remote-endpoint = <&lvds0_input>;
+                                reg = <1>;
+                                lvds0_out: endpoint {
                                 };
                         };
                 };
         };
 };
+
+&{/display@feb00000/ports} {
+        port@1 {
+                endpoint {
+                        remote-endpoint = <&lvds0_input>;
+                };
+        };
+};
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_of_lvds_r8a7795.dts b/drivers/gpu/drm/rcar-du/rcar_du_of_lvds_r8a7795.dts
index a1327443e6fa..16c2d03cb016 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_of_lvds_r8a7795.dts
+++ b/drivers/gpu/drm/rcar-du/rcar_du_of_lvds_r8a7795.dts
@@ -7,44 +7,37 @@
 
 /dts-v1/;
 /plugin/;
-/ {
-        fragment@0 {
-                target-path = "/soc";
-                __overlay__ {
-                        #address-cells = <2>;
-                        #size-cells = <2>;
 
-                        lvds@feb90000 {
-                                compatible = "renesas,r8a7795-lvds";
-                                reg = <0 0xfeb90000 0 0x14>;
+&{/soc} {
+        #address-cells = <2>;
+        #size-cells = <2>;
 
-                                ports {
-                                        #address-cells = <1>;
-                                        #size-cells = <0>;
+        lvds@feb90000 {
+                compatible = "renesas,r8a7795-lvds";
+                reg = <0 0xfeb90000 0 0x14>;
 
-                                        port@0 {
-                                                reg = <0>;
-                                                lvds0_input: endpoint {
-                                                };
-                                        };
-                                        port@1 {
-                                                reg = <1>;
-                                                lvds0_out: endpoint {
-                                                };
-                                        };
+                ports {
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+
+                        port@0 {
+                                reg = <0>;
+                                lvds0_input: endpoint {
+                                };
+                        };
+                        port@1 {
+                                reg = <1>;
+                                lvds0_out: endpoint {
                                 };
                         };
                 };
         };
+};
 
-        fragment@1 {
-                target-path = "/soc/display@feb00000/ports";
-                __overlay__ {
-                        port@3 {
-                                endpoint {
-                                        remote-endpoint = <&lvds0_input>;
-                                };
-                        };
+&{/soc/display@feb00000/ports} {
+        port@3 {
+                endpoint {
+                        remote-endpoint = <&lvds0_input>;
                 };
         };
 };
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_of_lvds_r8a7796.dts b/drivers/gpu/drm/rcar-du/rcar_du_of_lvds_r8a7796.dts
index b23d6466c415..680e923ac036 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_of_lvds_r8a7796.dts
+++ b/drivers/gpu/drm/rcar-du/rcar_du_of_lvds_r8a7796.dts
@@ -7,44 +7,37 @@
 
 /dts-v1/;
 /plugin/;
-/ {
-        fragment@0 {
-                target-path = "/soc";
-                __overlay__ {
-                        #address-cells = <2>;
-                        #size-cells = <2>;
 
-                        lvds@feb90000 {
-                                compatible = "renesas,r8a7796-lvds";
-                                reg = <0 0xfeb90000 0 0x14>;
+&{/soc} {
+        #address-cells = <2>;
+        #size-cells = <2>;
 
-                                ports {
-                                        #address-cells = <1>;
-                                        #size-cells = <0>;
+        lvds@feb90000 {
+                compatible = "renesas,r8a7796-lvds";
+                reg = <0 0xfeb90000 0 0x14>;
 
-                                        port@0 {
-                                                reg = <0>;
-                                                lvds0_input: endpoint {
-                                                };
-                                        };
-                                        port@1 {
-                                                reg = <1>;
-                                                lvds0_out: endpoint {
-                                                };
-                                        };
+                ports {
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+
+                        port@0 {
+                                reg = <0>;
+                                lvds0_input: endpoint {
+                                };
+                        };
+                        port@1 {
+                                reg = <1>;
+                                lvds0_out: endpoint {
                                 };
                         };
                 };
         };
+};
 
-        fragment@1 {
-                target-path = "/soc/display@feb00000/ports";
-                __overlay__ {
-                        port@3 {
-                                endpoint {
-                                        remote-endpoint = <&lvds0_input>;
-                                };
-                        };
+&{/soc/display@feb00000/ports} {
+        port@3 {
+                endpoint {
+                        remote-endpoint = <&lvds0_input>;
                 };
         };
 };
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_plane.c b/drivers/gpu/drm/rcar-du/rcar_du_plane.c
index 39d5ae3fdf72..fa6b9aabc832 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_plane.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_plane.c
@@ -7,7 +7,6 @@
  * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
  */
 
-#include <drm/drmP.h>
 #include <drm/drm_atomic.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_crtc.h>
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_plane.h b/drivers/gpu/drm/rcar-du/rcar_du_plane.h
index 2f223a4c1d33..81bbf207ad0e 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_plane.h
+++ b/drivers/gpu/drm/rcar-du/rcar_du_plane.h
@@ -10,8 +10,7 @@
 #ifndef __RCAR_DU_PLANE_H__
 #define __RCAR_DU_PLANE_H__
 
-#include <drm/drmP.h>
-#include <drm/drm_crtc.h>
+#include <drm/drm_plane.h>
 
 struct rcar_du_format_info;
 struct rcar_du_group;
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_vsp.c b/drivers/gpu/drm/rcar-du/rcar_du_vsp.c
index 4576119e7777..dec314a687e0 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_vsp.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_vsp.c
@@ -7,7 +7,6 @@
  * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
  */
 
-#include <drm/drmP.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_crtc.h>
 #include <drm/drm_crtc_helper.h>
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_vsp.h b/drivers/gpu/drm/rcar-du/rcar_du_vsp.h
index e8c14dc5cb93..db232037f24a 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_vsp.h
+++ b/drivers/gpu/drm/rcar-du/rcar_du_vsp.h
@@ -10,8 +10,7 @@
 #ifndef __RCAR_DU_VSP_H__
 #define __RCAR_DU_VSP_H__
 
-#include <drm/drmP.h>
-#include <drm/drm_crtc.h>
+#include <drm/drm_plane.h>
 
 struct rcar_du_format_info;
 struct rcar_du_vsp;
diff --git a/drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c b/drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c
index 75490a3e0a2a..603bb340e8cf 100644
--- a/drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c
+++ b/drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c
@@ -35,6 +35,20 @@ static const struct rcar_hdmi_phy_params rcar_hdmi_phy_params[] = {
         { ~0UL,      0x0000, 0x0000, 0x0000 },
 };
 
+static enum drm_mode_status
+rcar_hdmi_mode_valid(struct drm_connector *connector,
+                     const struct drm_display_mode *mode)
+{
+        /*
+         * The maximum supported clock frequency is 297 MHz, as shown in the PHY
+         * parameters table.
+         */
+        if (mode->clock > 297000)
+                return MODE_CLOCK_HIGH;
+
+        return MODE_OK;
+}
+
 static int rcar_hdmi_phy_configure(struct dw_hdmi *hdmi,
                                    const struct dw_hdmi_plat_data *pdata,
                                    unsigned long mpixelclock)
@@ -59,6 +73,7 @@ static int rcar_hdmi_phy_configure(struct dw_hdmi *hdmi,
 }
 
 static const struct dw_hdmi_plat_data rcar_dw_hdmi_plat_data = {
+        .mode_valid = rcar_hdmi_mode_valid,
         .configure_phy  = rcar_hdmi_phy_configure,
 };
 
diff --git a/drivers/gpu/drm/rcar-du/rcar_lvds.c b/drivers/gpu/drm/rcar-du/rcar_lvds.c
index 534a128a869d..96d749a35b25 100644
--- a/drivers/gpu/drm/rcar-du/rcar_lvds.c
+++ b/drivers/gpu/drm/rcar-du/rcar_lvds.c
@@ -520,8 +520,8 @@ static void rcar_lvds_get_lvds_mode(struct rcar_lvds *lvds)
 }
 
 static void rcar_lvds_mode_set(struct drm_bridge *bridge,
-                               struct drm_display_mode *mode,
-                               struct drm_display_mode *adjusted_mode)
+                               const struct drm_display_mode *mode,
+                               const struct drm_display_mode *adjusted_mode)
 {
         struct rcar_lvds *lvds = bridge_to_rcar_lvds(bridge);
 
@@ -785,6 +785,7 @@ static const struct rcar_lvds_device_info rcar_lvds_r8a77995_info = {
 
 static const struct of_device_id rcar_lvds_of_table[] = {
         { .compatible = "renesas,r8a7743-lvds", .data = &rcar_lvds_gen2_info },
+        { .compatible = "renesas,r8a774c0-lvds", .data = &rcar_lvds_r8a77990_info },
         { .compatible = "renesas,r8a7790-lvds", .data = &rcar_lvds_r8a7790_info },
         { .compatible = "renesas,r8a7791-lvds", .data = &rcar_lvds_gen2_info },
         { .compatible = "renesas,r8a7793-lvds", .data = &rcar_lvds_gen2_info },
diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
index 7ee359bcee62..ef8486e5e2cd 100644
--- a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
+++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
@@ -467,7 +467,7 @@ static int dw_mipi_dsi_phy_init(void *priv_data)
 }
 
 static int
-dw_mipi_dsi_get_lane_mbps(void *priv_data, struct drm_display_mode *mode,
+dw_mipi_dsi_get_lane_mbps(void *priv_data, const struct drm_display_mode *mode,
                           unsigned long mode_flags, u32 lanes, u32 format,
                           unsigned int *lane_mbps)
 {
diff --git a/drivers/gpu/drm/shmobile/shmob_drm_drv.c b/drivers/gpu/drm/shmobile/shmob_drm_drv.c
index 8554102a6ead..f2cfd1698b78 100644
--- a/drivers/gpu/drm/shmobile/shmob_drm_drv.c
+++ b/drivers/gpu/drm/shmobile/shmob_drm_drv.c
@@ -229,8 +229,8 @@ static int shmob_drm_probe(struct platform_device *pdev)
 
         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
         sdev->mmio = devm_ioremap_resource(&pdev->dev, res);
-        if (sdev->mmio == NULL)
-                return -ENOMEM;
+        if (IS_ERR(sdev->mmio))
+                return PTR_ERR(sdev->mmio);
 
         ret = shmob_drm_setup_clocks(sdev, pdata->clk_source);
         if (ret < 0)
diff --git a/drivers/gpu/drm/sti/sti_dvo.c b/drivers/gpu/drm/sti/sti_dvo.c
index b08376b7611b..6d33772f77eb 100644
--- a/drivers/gpu/drm/sti/sti_dvo.c
+++ b/drivers/gpu/drm/sti/sti_dvo.c
@@ -277,8 +277,8 @@ static void sti_dvo_pre_enable(struct drm_bridge *bridge)
 }
 
 static void sti_dvo_set_mode(struct drm_bridge *bridge,
-                             struct drm_display_mode *mode,
-                             struct drm_display_mode *adjusted_mode)
+                             const struct drm_display_mode *mode,
+                             const struct drm_display_mode *adjusted_mode)
 {
         struct sti_dvo *dvo = bridge->driver_private;
         struct sti_mixer *mixer = to_sti_mixer(dvo->encoder->crtc);
diff --git a/drivers/gpu/drm/sti/sti_hda.c b/drivers/gpu/drm/sti/sti_hda.c
index 19b9b5ed1297..a63dd5eb7081 100644
--- a/drivers/gpu/drm/sti/sti_hda.c
+++ b/drivers/gpu/drm/sti/sti_hda.c
@@ -508,8 +508,8 @@ static void sti_hda_pre_enable(struct drm_bridge *bridge)
 }
 
 static void sti_hda_set_mode(struct drm_bridge *bridge,
-                struct drm_display_mode *mode,
-                struct drm_display_mode *adjusted_mode)
+                             const struct drm_display_mode *mode,
+                             const struct drm_display_mode *adjusted_mode)
 {
         struct sti_hda *hda = bridge->driver_private;
         u32 mode_idx;
diff --git a/drivers/gpu/drm/sti/sti_hdmi.c b/drivers/gpu/drm/sti/sti_hdmi.c
index ccf718404a1c..fbef4ad6c8ef 100644
--- a/drivers/gpu/drm/sti/sti_hdmi.c
+++ b/drivers/gpu/drm/sti/sti_hdmi.c
@@ -917,8 +917,8 @@ static void sti_hdmi_pre_enable(struct drm_bridge *bridge)
 }
 
 static void sti_hdmi_set_mode(struct drm_bridge *bridge,
-                struct drm_display_mode *mode,
-                struct drm_display_mode *adjusted_mode)
+                              const struct drm_display_mode *mode,
+                              const struct drm_display_mode *adjusted_mode)
 {
         struct sti_hdmi *hdmi = bridge->driver_private;
         int ret;
diff --git a/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c b/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c
index a514b593f37c..a672b59a2226 100644
--- a/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c
+++ b/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c
@@ -215,7 +215,7 @@ static int dw_mipi_dsi_phy_init(void *priv_data)
 }
 
 static int
-dw_mipi_dsi_get_lane_mbps(void *priv_data, struct drm_display_mode *mode,
+dw_mipi_dsi_get_lane_mbps(void *priv_data, const struct drm_display_mode *mode,
                           unsigned long mode_flags, u32 lanes, u32 format,
                           unsigned int *lane_mbps)
 {
diff --git a/include/drm/bridge/dw_mipi_dsi.h b/include/drm/bridge/dw_mipi_dsi.h
index 48a671e782ca..7d3dd69a5caa 100644
--- a/include/drm/bridge/dw_mipi_dsi.h
+++ b/include/drm/bridge/dw_mipi_dsi.h
@@ -14,7 +14,8 @@ struct dw_mipi_dsi;
 
 struct dw_mipi_dsi_phy_ops {
         int (*init)(void *priv_data);
-        int (*get_lane_mbps)(void *priv_data, struct drm_display_mode *mode,
+        int (*get_lane_mbps)(void *priv_data,
+                             const struct drm_display_mode *mode,
                              unsigned long mode_flags, u32 lanes, u32 format,
                              unsigned int *lane_mbps);
 };
diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h
index bd850747ce54..9da8c93f7976 100644
--- a/include/drm/drm_bridge.h
+++ b/include/drm/drm_bridge.h
@@ -196,8 +196,8 @@ struct drm_bridge_funcs {
          * the DRM framework will have to be extended with DRM bridge states.
          */
         void (*mode_set)(struct drm_bridge *bridge,
-                         struct drm_display_mode *mode,
-                         struct drm_display_mode *adjusted_mode);
+                         const struct drm_display_mode *mode,
+                         const struct drm_display_mode *adjusted_mode);
         /**
          * @pre_enable:
          *
@@ -310,8 +310,8 @@ enum drm_mode_status drm_bridge_mode_valid(struct drm_bridge *bridge,
 void drm_bridge_disable(struct drm_bridge *bridge);
 void drm_bridge_post_disable(struct drm_bridge *bridge);
 void drm_bridge_mode_set(struct drm_bridge *bridge,
-                         struct drm_display_mode *mode,
-                         struct drm_display_mode *adjusted_mode);
+                         const struct drm_display_mode *mode,
+                         const struct drm_display_mode *adjusted_mode);
 void drm_bridge_pre_enable(struct drm_bridge *bridge);
 void drm_bridge_enable(struct drm_bridge *bridge);