Merge tag 'shmob-drm-atomic-dt-tag2' of...

Merge tag 'shmob-drm-atomic-dt-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers into drm-next

drm: renesas: shmobile: Atomic conversion + DT support

Currently, there are two drivers for the LCD controller on Renesas
SuperH-based and ARM-based SH-Mobile and R-Mobile SoCs:
  1. sh_mobile_lcdcfb, using the fbdev framework,
  2. shmob_drm, using the DRM framework.
However, only the former driver is used, as all platform support
integrates the former.  None of these drivers support DT-based systems.

Convert the SH-Mobile DRM driver to atomic modesetting, and add DT
support, complemented by the customary set of fixes and improvements.
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://lore.kernel.org/r/cover.1694767208.git.geert+renesas@glider.be/Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Geert Uytterhoeven <geert@linux-m68k.org>
Link: https://patchwork.freedesktop.org/patch/msgid/CAMuHMdUF61V5qNyKbrTGxZfEJvCVuLO7q2R5MqZYkzRC_cNr0w@mail.gmail.com

Documentation/devicetree/bindings/display/renesas,shmobile-lcdc.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/renesas,shmobile-lcdc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas SH-Mobile LCD Controller (LCDC)
+
+maintainers:
+  - Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
+  - Geert Uytterhoeven <geert+renesas@glider.be>
+
+properties:
+  compatible:
+    enum:
+      - renesas,r8a7740-lcdc # R-Mobile A1
+      - renesas,sh73a0-lcdc  # SH-Mobile AG5
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    minItems: 1
+    maxItems: 5
+    description:
+      Only the functional clock is mandatory.
+      Some of the optional clocks are model-dependent (e.g. "video" (a.k.a.
+      "vou" or "dv_clk") is available on R-Mobile A1 only).
+
+  clock-names:
+    minItems: 1
+    items:
+      - const: fck
+      - enum: [ media, lclk, hdmi, video ]
+      - enum: [ media, lclk, hdmi, video ]
+      - enum: [ media, lclk, hdmi, video ]
+      - enum: [ media, lclk, hdmi, video ]
+
+  power-domains:
+    maxItems: 1
+
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+
+    properties:
+      port@0:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: LCD port (R-Mobile A1 and SH-Mobile AG5)
+        unevaluatedProperties: false
+
+      port@1:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: HDMI port (R-Mobile A1 LCDC1 and SH-Mobile AG5)
+        unevaluatedProperties: false
+
+      port@2:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: MIPI-DSI port (SH-Mobile AG5)
+        unevaluatedProperties: false
+
+    required:
+      - port@0
+
+    unevaluatedProperties: false
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+  - power-domains
+  - ports
+
+additionalProperties: false
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: renesas,r8a7740-lcdc
+    then:
+      properties:
+        ports:
+          properties:
+            port@2: false
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: renesas,sh73a0-lcdc
+    then:
+      properties:
+        ports:
+          required:
+            - port@1
+            - port@2
+
+examples:
+  - |
+    #include <dt-bindings/clock/r8a7740-clock.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    lcd-controller@fe940000 {
+        compatible = "renesas,r8a7740-lcdc";
+        reg = <0xfe940000 0x4000>;
+        interrupts = <GIC_SPI 177 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&mstp1_clks R8A7740_CLK_LCDC0>,
+                 <&cpg_clocks R8A7740_CLK_M3>, <&lcdlclk0_clk>,
+                 <&vou_clk>;
+        clock-names = "fck", "media", "lclk", "video";
+        power-domains = <&pd_a4lc>;
+
+        ports {
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            port@0 {
+                reg = <0>;
+
+                lcdc0_rgb: endpoint {
+                };
+            };
+        };
+    };

Documentation/userspace-api/media/v4l/subdev-formats.rst

@@ -949,6 +949,78 @@ The following tables list existing packed RGB formats.
       - b\ :sub:`2`
       - b\ :sub:`1`
       - b\ :sub:`0`
+    * .. _MEDIA-BUS-FMT-RGB666-2X9-BE:
+
+      - MEDIA_BUS_FMT_RGB666_2X9_BE
+      - 0x1025
+      -
+      -
+      -
+      -
+      -
+      -
+      -
+      -
+      -
+      -
+      -
+      -
+      -
+      -
+      -
+      -
+      -
+      -
+      -
+      -
+      -
+      -
+      -
+      -
+      - r\ :sub:`5`
+      - r\ :sub:`4`
+      - r\ :sub:`3`
+      - r\ :sub:`2`
+      - r\ :sub:`1`
+      - r\ :sub:`0`
+      - g\ :sub:`5`
+      - g\ :sub:`4`
+      - g\ :sub:`3`
+    * -
+      -
+      -
+      -
+      -
+      -
+      -
+      -
+      -
+      -
+      -
+      -
+      -
+      -
+      -
+      -
+      -
+      -
+      -
+      -
+      -
+      -
+      -
+      -
+      -
+      -
+      - g\ :sub:`2`
+      - g\ :sub:`1`
+      - g\ :sub:`0`
+      - b\ :sub:`5`
+      - b\ :sub:`4`
+      - b\ :sub:`3`
+      - b\ :sub:`2`
+      - b\ :sub:`1`
+      - b\ :sub:`0`
     * .. _MEDIA-BUS-FMT-BGR666-1X18:
 
       - MEDIA_BUS_FMT_BGR666_1X18

MAINTAINERS

@@ -7053,7 +7053,7 @@ F:	drivers/gpu/host1x/
 F:	include/linux/host1x.h
 F:	include/uapi/drm/tegra_drm.h
 
-DRM DRIVERS FOR RENESAS
+DRM DRIVERS FOR RENESAS R-CAR
 M:	Laurent Pinchart <laurent.pinchart@ideasonboard.com>
 M:	Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
 L:	dri-devel@lists.freedesktop.org
@@ -7064,7 +7064,16 @@ F:	Documentation/devicetree/bindings/display/bridge/renesas,dsi-csi2-tx.yaml
 F:	Documentation/devicetree/bindings/display/bridge/renesas,dw-hdmi.yaml
 F:	Documentation/devicetree/bindings/display/bridge/renesas,lvds.yaml
 F:	Documentation/devicetree/bindings/display/renesas,du.yaml
-F:	drivers/gpu/drm/renesas/
+F:	drivers/gpu/drm/renesas/rcar-du/
+
+DRM DRIVERS FOR RENESAS SHMOBILE
+M:	Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+M:	Geert Uytterhoeven <geert+renesas@glider.be>
+L:	dri-devel@lists.freedesktop.org
+L:	linux-renesas-soc@vger.kernel.org
+S:	Supported
+F:	Documentation/devicetree/bindings/display/renesas,shmobile-lcdc.yaml
+F:	drivers/gpu/drm/renesas/shmobile/
 F:	include/linux/platform_data/shmob_drm.h
 
 DRM DRIVERS FOR ROCKCHIP

drivers/gpu/drm/renesas/shmobile/Kconfig

 # SPDX-License-Identifier: GPL-2.0
 config DRM_SHMOBILE
 	tristate "DRM Support for SH Mobile"
-	depends on DRM
+	depends on DRM && PM
 	depends on ARCH_RENESAS || ARCH_SHMOBILE || COMPILE_TEST
 	select BACKLIGHT_CLASS_DEVICE
 	select DRM_KMS_HELPER
 	select DRM_GEM_DMA_HELPER
+	select VIDEOMODE_HELPERS
 	help
 	  Choose this option if you have an SH Mobile chipset.
 	  If M is selected the module will be called shmob-drm.

drivers/gpu/drm/renesas/shmobile/Makefile

 # SPDX-License-Identifier: GPL-2.0
-shmob-drm-y := shmob_drm_backlight.o \
-	       shmob_drm_crtc.o \
+shmob-drm-y := shmob_drm_crtc.o \
 	       shmob_drm_drv.o \
 	       shmob_drm_kms.o \
 	       shmob_drm_plane.o

drivers/gpu/drm/renesas/shmobile/shmob_drm_backlight.c

-// SPDX-License-Identifier: GPL-2.0+
-/*
- * shmob_drm_backlight.c  --  SH Mobile DRM Backlight
- *
- * Copyright (C) 2012 Renesas Electronics Corporation
- *
- * Laurent Pinchart (laurent.pinchart@ideasonboard.com)
- */
-
-#include <linux/backlight.h>
-
-#include "shmob_drm_backlight.h"
-#include "shmob_drm_crtc.h"
-#include "shmob_drm_drv.h"
-
-static int shmob_drm_backlight_update(struct backlight_device *bdev)
-{
-	struct shmob_drm_connector *scon = bl_get_data(bdev);
-	struct shmob_drm_device *sdev = scon->connector.dev->dev_private;
-	const struct shmob_drm_backlight_data *bdata = &sdev->pdata->backlight;
-	int brightness = backlight_get_brightness(bdev);
-
-	return bdata->set_brightness(brightness);
-}
-
-static int shmob_drm_backlight_get_brightness(struct backlight_device *bdev)
-{
-	struct shmob_drm_connector *scon = bl_get_data(bdev);
-	struct shmob_drm_device *sdev = scon->connector.dev->dev_private;
-	const struct shmob_drm_backlight_data *bdata = &sdev->pdata->backlight;
-
-	return bdata->get_brightness();
-}
-
-static const struct backlight_ops shmob_drm_backlight_ops = {
-	.options	= BL_CORE_SUSPENDRESUME,
-	.update_status	= shmob_drm_backlight_update,
-	.get_brightness	= shmob_drm_backlight_get_brightness,
-};
-
-void shmob_drm_backlight_dpms(struct shmob_drm_connector *scon, int mode)
-{
-	if (scon->backlight == NULL)
-		return;
-
-	scon->backlight->props.power = mode == DRM_MODE_DPMS_ON
-				     ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
-	backlight_update_status(scon->backlight);
-}
-
-int shmob_drm_backlight_init(struct shmob_drm_connector *scon)
-{
-	struct shmob_drm_device *sdev = scon->connector.dev->dev_private;
-	const struct shmob_drm_backlight_data *bdata = &sdev->pdata->backlight;
-	struct drm_connector *connector = &scon->connector;
-	struct drm_device *dev = connector->dev;
-	struct backlight_device *backlight;
-
-	if (!bdata->max_brightness)
-		return 0;
-
-	backlight = backlight_device_register(bdata->name, dev->dev, scon,
-					      &shmob_drm_backlight_ops, NULL);
-	if (IS_ERR(backlight)) {
-		dev_err(dev->dev, "unable to register backlight device: %ld\n",
-			PTR_ERR(backlight));
-		return PTR_ERR(backlight);
-	}
-
-	backlight->props.max_brightness = bdata->max_brightness;
-	backlight->props.brightness = bdata->max_brightness;
-	backlight->props.power = FB_BLANK_POWERDOWN;
-	backlight_update_status(backlight);
-
-	scon->backlight = backlight;
-	return 0;
-}
-
-void shmob_drm_backlight_exit(struct shmob_drm_connector *scon)
-{
-	backlight_device_unregister(scon->backlight);
-}

drivers/gpu/drm/renesas/shmobile/shmob_drm_backlight.h

-/* SPDX-License-Identifier: GPL-2.0+ */
-/*
- * shmob_drm_backlight.h  --  SH Mobile DRM Backlight
- *
- * Copyright (C) 2012 Renesas Electronics Corporation
- *
- * Laurent Pinchart (laurent.pinchart@ideasonboard.com)
- */
-
-#ifndef __SHMOB_DRM_BACKLIGHT_H__
-#define __SHMOB_DRM_BACKLIGHT_H__
-
-struct shmob_drm_connector;
-
-void shmob_drm_backlight_dpms(struct shmob_drm_connector *scon, int mode);
-int shmob_drm_backlight_init(struct shmob_drm_connector *scon);
-void shmob_drm_backlight_exit(struct shmob_drm_connector *scon);
-
-#endif /* __SHMOB_DRM_BACKLIGHT_H__ */

drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.h

@@ -14,39 +14,30 @@
 #include <drm/drm_connector.h>
 #include <drm/drm_encoder.h>
 
-struct backlight_device;
+#include <linux/wait.h>
+
+#include <video/videomode.h>
+
 struct drm_pending_vblank_event;
 struct shmob_drm_device;
 struct shmob_drm_format_info;
 
 struct shmob_drm_crtc {
-	struct drm_crtc crtc;
+	struct drm_crtc base;
 
 	struct drm_pending_vblank_event *event;
-	int dpms;
-
-	const struct shmob_drm_format_info *format;
-	unsigned long dma[2];
-	unsigned int line_size;
-	bool started;
-};
-
-struct shmob_drm_encoder {
-	struct drm_encoder encoder;
-	int dpms;
+	wait_queue_head_t flip_wait;
 };
 
+/* Legacy connector */
 struct shmob_drm_connector {
-	struct drm_connector connector;
+	struct drm_connector base;
 	struct drm_encoder *encoder;
-
-	struct backlight_device *backlight;
+	const struct videomode *mode;
 };
 
 int shmob_drm_crtc_create(struct shmob_drm_device *sdev);
 void shmob_drm_crtc_finish_page_flip(struct shmob_drm_crtc *scrtc);
-void shmob_drm_crtc_suspend(struct shmob_drm_crtc *scrtc);
-void shmob_drm_crtc_resume(struct shmob_drm_crtc *scrtc);
 
 int shmob_drm_encoder_create(struct shmob_drm_device *sdev);
 int shmob_drm_connector_create(struct shmob_drm_device *sdev,

drivers/gpu/drm/renesas/shmobile/shmob_drm_drv.c

@@ -11,13 +11,17 @@
 #include <linux/io.h>
 #include <linux/mm.h>
 #include <linux/module.h>
+#include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/pm.h>
+#include <linux/pm_runtime.h>
 #include <linux/slab.h>
 
+#include <drm/drm_atomic_helper.h>
 #include <drm/drm_drv.h>
 #include <drm/drm_fbdev_generic.h>
 #include <drm/drm_gem_dma_helper.h>
+#include <drm/drm_modeset_helper.h>
 #include <drm/drm_module.h>
 #include <drm/drm_probe_helper.h>
 #include <drm/drm_vblank.h>
@@ -31,57 +35,23 @@
  * Hardware initialization
  */
 
-static int shmob_drm_init_interface(struct shmob_drm_device *sdev)
-{
-	static const u32 ldmt1r[] = {
-		[SHMOB_DRM_IFACE_RGB8] = LDMT1R_MIFTYP_RGB8,
-		[SHMOB_DRM_IFACE_RGB9] = LDMT1R_MIFTYP_RGB9,
-		[SHMOB_DRM_IFACE_RGB12A] = LDMT1R_MIFTYP_RGB12A,
-		[SHMOB_DRM_IFACE_RGB12B] = LDMT1R_MIFTYP_RGB12B,
-		[SHMOB_DRM_IFACE_RGB16] = LDMT1R_MIFTYP_RGB16,
-		[SHMOB_DRM_IFACE_RGB18] = LDMT1R_MIFTYP_RGB18,
-		[SHMOB_DRM_IFACE_RGB24] = LDMT1R_MIFTYP_RGB24,
-		[SHMOB_DRM_IFACE_YUV422] = LDMT1R_MIFTYP_YCBCR,
-		[SHMOB_DRM_IFACE_SYS8A] = LDMT1R_IFM | LDMT1R_MIFTYP_SYS8A,
-		[SHMOB_DRM_IFACE_SYS8B] = LDMT1R_IFM | LDMT1R_MIFTYP_SYS8B,
-		[SHMOB_DRM_IFACE_SYS8C] = LDMT1R_IFM | LDMT1R_MIFTYP_SYS8C,
-		[SHMOB_DRM_IFACE_SYS8D] = LDMT1R_IFM | LDMT1R_MIFTYP_SYS8D,
-		[SHMOB_DRM_IFACE_SYS9] = LDMT1R_IFM | LDMT1R_MIFTYP_SYS9,
-		[SHMOB_DRM_IFACE_SYS12] = LDMT1R_IFM | LDMT1R_MIFTYP_SYS12,
-		[SHMOB_DRM_IFACE_SYS16A] = LDMT1R_IFM | LDMT1R_MIFTYP_SYS16A,
-		[SHMOB_DRM_IFACE_SYS16B] = LDMT1R_IFM | LDMT1R_MIFTYP_SYS16B,
-		[SHMOB_DRM_IFACE_SYS16C] = LDMT1R_IFM | LDMT1R_MIFTYP_SYS16C,
-		[SHMOB_DRM_IFACE_SYS18] = LDMT1R_IFM | LDMT1R_MIFTYP_SYS18,
-		[SHMOB_DRM_IFACE_SYS24] = LDMT1R_IFM | LDMT1R_MIFTYP_SYS24,
-	};
-
-	if (sdev->pdata->iface.interface >= ARRAY_SIZE(ldmt1r)) {
-		dev_err(sdev->dev, "invalid interface type %u\n",
-			sdev->pdata->iface.interface);
-		return -EINVAL;
-	}
-
-	sdev->ldmt1r = ldmt1r[sdev->pdata->iface.interface];
-	return 0;
-}
-
 static int shmob_drm_setup_clocks(struct shmob_drm_device *sdev,
-					    enum shmob_drm_clk_source clksrc)
+				  enum shmob_drm_clk_source clksrc)
 {
 	struct clk *clk;
 	char *clkname;
 
 	switch (clksrc) {
 	case SHMOB_DRM_CLK_BUS:
-		clkname = "bus_clk";
+		clkname = "fck";
 		sdev->lddckr = LDDCKR_ICKSEL_BUS;
 		break;
 	case SHMOB_DRM_CLK_PERIPHERAL:
-		clkname = "peripheral_clk";
+		clkname = "media";
 		sdev->lddckr = LDDCKR_ICKSEL_MIPI;
 		break;
 	case SHMOB_DRM_CLK_EXTERNAL:
-		clkname = NULL;
+		clkname = "lclk";
 		sdev->lddckr = LDDCKR_ICKSEL_HDMI;
 		break;
 	default:
@@ -105,7 +75,7 @@ static int shmob_drm_setup_clocks(struct shmob_drm_device *sdev,
 static irqreturn_t shmob_drm_irq(int irq, void *arg)
 {
 	struct drm_device *dev = arg;
-	struct shmob_drm_device *sdev = dev->dev_private;
+	struct shmob_drm_device *sdev = to_shmob_device(dev);
 	unsigned long flags;
 	u32 status;
 
@@ -119,7 +89,7 @@ static irqreturn_t shmob_drm_irq(int irq, void *arg)
 	spin_unlock_irqrestore(&sdev->irq_lock, flags);
 
 	if (status & LDINTR_VES) {
-		drm_handle_vblank(dev, 0);
+		drm_crtc_handle_vblank(&sdev->crtc.base);
 		shmob_drm_crtc_finish_page_flip(&sdev->crtc);
 	}
 
@@ -129,7 +99,7 @@ static irqreturn_t shmob_drm_irq(int irq, void *arg)
 DEFINE_DRM_GEM_DMA_FOPS(shmob_drm_fops);
 
 static const struct drm_driver shmob_drm_driver = {
-	.driver_features	= DRIVER_GEM | DRIVER_MODESET,
+	.driver_features	= DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
 	DRM_GEM_DMA_DRIVER_OPS,
 	.fops			= &shmob_drm_fops,
 	.name			= "shmob-drm",
@@ -147,26 +117,45 @@ static int shmob_drm_pm_suspend(struct device *dev)
 {
 	struct shmob_drm_device *sdev = dev_get_drvdata(dev);
 
-	drm_kms_helper_poll_disable(sdev->ddev);
-	shmob_drm_crtc_suspend(&sdev->crtc);
+	return drm_mode_config_helper_suspend(&sdev->ddev);
+}
+
+static int shmob_drm_pm_resume(struct device *dev)
+{
+	struct shmob_drm_device *sdev = dev_get_drvdata(dev);
+
+	return drm_mode_config_helper_resume(&sdev->ddev);
+}
+
+static int shmob_drm_pm_runtime_suspend(struct device *dev)
+{
+	struct shmob_drm_device *sdev = dev_get_drvdata(dev);
+
+	if (sdev->clock)
+		clk_disable_unprepare(sdev->clock);
 
 	return 0;
 }
 
-static int shmob_drm_pm_resume(struct device *dev)
+static int shmob_drm_pm_runtime_resume(struct device *dev)
 {
 	struct shmob_drm_device *sdev = dev_get_drvdata(dev);
+	int ret;
 
-	drm_modeset_lock_all(sdev->ddev);
-	shmob_drm_crtc_resume(&sdev->crtc);
-	drm_modeset_unlock_all(sdev->ddev);
+	if (sdev->clock) {
+		ret = clk_prepare_enable(sdev->clock);
+		if (ret < 0)
+			return ret;
+	}
 
-	drm_kms_helper_poll_enable(sdev->ddev);
 	return 0;
 }
 
-static DEFINE_SIMPLE_DEV_PM_OPS(shmob_drm_pm_ops,
-				shmob_drm_pm_suspend, shmob_drm_pm_resume);
+static const struct dev_pm_ops shmob_drm_pm_ops = {
+	SYSTEM_SLEEP_PM_OPS(shmob_drm_pm_suspend, shmob_drm_pm_resume)
+	RUNTIME_PM_OPS(shmob_drm_pm_runtime_suspend,
+		       shmob_drm_pm_runtime_resume, NULL)
+};
 
 /* -----------------------------------------------------------------------------
  * Platform driver
@@ -175,37 +164,45 @@ static DEFINE_SIMPLE_DEV_PM_OPS(shmob_drm_pm_ops,
 static void shmob_drm_remove(struct platform_device *pdev)
 {
 	struct shmob_drm_device *sdev = platform_get_drvdata(pdev);
-	struct drm_device *ddev = sdev->ddev;
+	struct drm_device *ddev = &sdev->ddev;
 
 	drm_dev_unregister(ddev);
+	drm_atomic_helper_shutdown(ddev);
 	drm_kms_helper_poll_fini(ddev);
-	free_irq(sdev->irq, ddev);
-	drm_dev_put(ddev);
 }
 
 static int shmob_drm_probe(struct platform_device *pdev)
 {
 	struct shmob_drm_platform_data *pdata = pdev->dev.platform_data;
+	const struct shmob_drm_config *config;
 	struct shmob_drm_device *sdev;
 	struct drm_device *ddev;
-	unsigned int i;
 	int ret;
 
-	if (pdata == NULL) {
+	config = of_device_get_match_data(&pdev->dev);
+	if (!config && !pdata) {
 		dev_err(&pdev->dev, "no platform data\n");
 		return -EINVAL;
 	}
 
 	/*
-	 * Allocate and initialize the driver private data, I/O resources and
-	 * clocks.
+	 * Allocate and initialize the DRM device, driver private data, I/O
+	 * resources and clocks.
 	 */
-	sdev = devm_kzalloc(&pdev->dev, sizeof(*sdev), GFP_KERNEL);
-	if (sdev == NULL)
-		return -ENOMEM;
+	sdev = devm_drm_dev_alloc(&pdev->dev, &shmob_drm_driver,
+				  struct shmob_drm_device, ddev);
+	if (IS_ERR(sdev))
+		return PTR_ERR(sdev);
 
+	ddev = &sdev->ddev;
 	sdev->dev = &pdev->dev;
-	sdev->pdata = pdata;
+	if (config) {
+		sdev->config = *config;
+	} else {
+		sdev->pdata = pdata;
+		sdev->config.clk_source = pdata->clk_source;
+		sdev->config.clk_div = pdata->iface.clk_div;
+	}
 	spin_lock_init(&sdev->irq_lock);
 
 	platform_set_drvdata(pdev, sdev);
@@ -214,49 +211,32 @@ static int shmob_drm_probe(struct platform_device *pdev)
 	if (IS_ERR(sdev->mmio))
 		return PTR_ERR(sdev->mmio);
 
-	ret = shmob_drm_setup_clocks(sdev, pdata->clk_source);
+	ret = shmob_drm_setup_clocks(sdev, sdev->config.clk_source);
 	if (ret < 0)
 		return ret;
 
-	ret = shmob_drm_init_interface(sdev);
-	if (ret < 0)
+	ret = devm_pm_runtime_enable(&pdev->dev);
+	if (ret)
 		return ret;
 
-	/* Allocate and initialize the DRM device. */
-	ddev = drm_dev_alloc(&shmob_drm_driver, &pdev->dev);
-	if (IS_ERR(ddev))
-		return PTR_ERR(ddev);
-
-	sdev->ddev = ddev;
-	ddev->dev_private = sdev;
-
-	ret = shmob_drm_modeset_init(sdev);
-	if (ret < 0) {
-		dev_err(&pdev->dev, "failed to initialize mode setting\n");
-		goto err_free_drm_dev;
-	}
-
-	for (i = 0; i < 4; ++i) {
-		ret = shmob_drm_plane_create(sdev, i);
-		if (ret < 0) {
-			dev_err(&pdev->dev, "failed to create plane %u\n", i);
-			goto err_modeset_cleanup;
-		}
-	}
-
 	ret = drm_vblank_init(ddev, 1);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "failed to initialize vblank\n");
-		goto err_modeset_cleanup;
+		return ret;
 	}
 
+	ret = shmob_drm_modeset_init(sdev);
+	if (ret < 0)
+		return dev_err_probe(&pdev->dev, ret,
+				     "failed to initialize mode setting\n");
+
 	ret = platform_get_irq(pdev, 0);
 	if (ret < 0)
 		goto err_modeset_cleanup;
 	sdev->irq = ret;
 
-	ret = request_irq(sdev->irq, shmob_drm_irq, 0, ddev->driver->name,
-			  ddev);
+	ret = devm_request_irq(&pdev->dev, sdev->irq, shmob_drm_irq, 0,
+			       ddev->driver->name, ddev);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "failed to install IRQ handler\n");
 		goto err_modeset_cleanup;
@@ -268,28 +248,35 @@ static int shmob_drm_probe(struct platform_device *pdev)
 	 */
 	ret = drm_dev_register(ddev, 0);
 	if (ret < 0)
-		goto err_irq_uninstall;
+		goto err_modeset_cleanup;
 
 	drm_fbdev_generic_setup(ddev, 16);
 
 	return 0;
 
-err_irq_uninstall:
-	free_irq(sdev->irq, ddev);
 err_modeset_cleanup:
 	drm_kms_helper_poll_fini(ddev);
-err_free_drm_dev:
-	drm_dev_put(ddev);
-
 	return ret;
 }
 
+static const struct shmob_drm_config shmob_arm_config = {
+	.clk_source = SHMOB_DRM_CLK_BUS,
+	.clk_div = 5,
+};
+
+static const struct of_device_id shmob_drm_of_table[] __maybe_unused = {
+	{ .compatible = "renesas,r8a7740-lcdc",	.data = &shmob_arm_config, },
+	{ .compatible = "renesas,sh73a0-lcdc",	.data = &shmob_arm_config, },
+	{ /* sentinel */ }
+};
+
 static struct platform_driver shmob_drm_platform_driver = {
 	.probe		= shmob_drm_probe,
 	.remove_new	= shmob_drm_remove,
 	.driver		= {
 		.name	= "shmob-drm",
-		.pm	= pm_sleep_ptr(&shmob_drm_pm_ops),
+		.of_match_table = of_match_ptr(shmob_drm_of_table),
+		.pm	= &shmob_drm_pm_ops,
 	},
 };
 

drivers/gpu/drm/renesas/shmobile/shmob_drm_drv.h

@@ -20,23 +20,33 @@ struct clk;
 struct device;
 struct drm_device;
 
+struct shmob_drm_config {
+	enum shmob_drm_clk_source clk_source;
+	unsigned int clk_div;
+};
+
 struct shmob_drm_device {
 	struct device *dev;
 	const struct shmob_drm_platform_data *pdata;
+	struct shmob_drm_config config;
 
 	void __iomem *mmio;
 	struct clk *clock;
 	u32 lddckr;
-	u32 ldmt1r;
 
 	unsigned int irq;
 	spinlock_t irq_lock;		/* Protects hardware LDINTR register */
 
-	struct drm_device *ddev;
+	struct drm_device ddev;
 
 	struct shmob_drm_crtc crtc;
-	struct shmob_drm_encoder encoder;
-	struct shmob_drm_connector connector;
+	struct drm_encoder encoder;
+	struct drm_connector *connector;
 };
 
+static inline struct shmob_drm_device *to_shmob_device(struct drm_device *dev)
+{
+	return container_of(dev, struct shmob_drm_device, ddev);
+}
+
 #endif /* __SHMOB_DRM_DRV_H__ */

drivers/gpu/drm/renesas/shmobile/shmob_drm_kms.c

@@ -7,6 +7,7 @@
  * Laurent Pinchart (laurent.pinchart@ideasonboard.com)
  */
 
+#include <drm/drm_atomic_helper.h>
 #include <drm/drm_crtc.h>
 #include <drm/drm_crtc_helper.h>
 #include <drm/drm_fourcc.h>
@@ -17,6 +18,7 @@
 #include "shmob_drm_crtc.h"
 #include "shmob_drm_drv.h"
 #include "shmob_drm_kms.h"
+#include "shmob_drm_plane.h"
 #include "shmob_drm_regs.h"
 
 /* -----------------------------------------------------------------------------
@@ -27,53 +29,73 @@ static const struct shmob_drm_format_info shmob_drm_format_infos[] = {
 	{
 		.fourcc = DRM_FORMAT_RGB565,
 		.bpp = 16,
-		.yuv = false,
 		.lddfr = LDDFR_PKF_RGB16,
+		.ldddsr = LDDDSR_LS | LDDDSR_WS,
+		.ldbbsifr = LDBBSIFR_AL_1 | LDBBSIFR_SWPL | LDBBSIFR_SWPW |
+			    LDBBSIFR_RY | LDBBSIFR_RPKF_RGB16,
 	}, {
 		.fourcc = DRM_FORMAT_RGB888,
 		.bpp = 24,
-		.yuv = false,
 		.lddfr = LDDFR_PKF_RGB24,
+		.ldddsr = LDDDSR_LS | LDDDSR_WS | LDDDSR_BS,
+		.ldbbsifr = LDBBSIFR_AL_1 | LDBBSIFR_SWPL | LDBBSIFR_SWPW |
+			    LDBBSIFR_SWPB | LDBBSIFR_RY | LDBBSIFR_RPKF_RGB24,
 	}, {
 		.fourcc = DRM_FORMAT_ARGB8888,
 		.bpp = 32,
-		.yuv = false,
 		.lddfr = LDDFR_PKF_ARGB32,
+		.ldddsr = LDDDSR_LS,
+		.ldbbsifr = LDBBSIFR_AL_PK | LDBBSIFR_SWPL | LDBBSIFR_RY |
+			    LDBBSIFR_RPKF_ARGB32,
 	}, {
 		.fourcc = DRM_FORMAT_XRGB8888,
 		.bpp = 32,
-		.yuv = false,
 		.lddfr = LDDFR_PKF_ARGB32,
+		.ldddsr = LDDDSR_LS,
+		.ldbbsifr = LDBBSIFR_AL_1 | LDBBSIFR_SWPL | LDBBSIFR_RY |
+			    LDBBSIFR_RPKF_ARGB32,
 	}, {
 		.fourcc = DRM_FORMAT_NV12,
 		.bpp = 12,
-		.yuv = true,
 		.lddfr = LDDFR_CC | LDDFR_YF_420,
+		.ldddsr = LDDDSR_LS | LDDDSR_WS | LDDDSR_BS,
+		.ldbbsifr = LDBBSIFR_AL_1 | LDBBSIFR_SWPL | LDBBSIFR_SWPW |
+			    LDBBSIFR_SWPB | LDBBSIFR_CHRR_420,
 	}, {
 		.fourcc = DRM_FORMAT_NV21,
 		.bpp = 12,
-		.yuv = true,
 		.lddfr = LDDFR_CC | LDDFR_YF_420,
+		.ldddsr = LDDDSR_LS | LDDDSR_WS,
+		.ldbbsifr = LDBBSIFR_AL_1 | LDBBSIFR_SWPL | LDBBSIFR_SWPW |
+			    LDBBSIFR_CHRR_420,
 	}, {
 		.fourcc = DRM_FORMAT_NV16,
 		.bpp = 16,
-		.yuv = true,
 		.lddfr = LDDFR_CC | LDDFR_YF_422,
+		.ldddsr = LDDDSR_LS | LDDDSR_WS | LDDDSR_BS,
+		.ldbbsifr = LDBBSIFR_AL_1 | LDBBSIFR_SWPL | LDBBSIFR_SWPW |
+			    LDBBSIFR_SWPB | LDBBSIFR_CHRR_422,
 	}, {
 		.fourcc = DRM_FORMAT_NV61,
 		.bpp = 16,
-		.yuv = true,
 		.lddfr = LDDFR_CC | LDDFR_YF_422,
+		.ldddsr = LDDDSR_LS | LDDDSR_WS,
+		.ldbbsifr = LDBBSIFR_AL_1 | LDBBSIFR_SWPL | LDBBSIFR_SWPW |
+			    LDBBSIFR_CHRR_422,
 	}, {
 		.fourcc = DRM_FORMAT_NV24,
 		.bpp = 24,
-		.yuv = true,
 		.lddfr = LDDFR_CC | LDDFR_YF_444,
+		.ldddsr = LDDDSR_LS | LDDDSR_WS | LDDDSR_BS,
+		.ldbbsifr = LDBBSIFR_AL_1 | LDBBSIFR_SWPL | LDBBSIFR_SWPW |
+			    LDBBSIFR_SWPB | LDBBSIFR_CHRR_444,
 	}, {
 		.fourcc = DRM_FORMAT_NV42,
 		.bpp = 24,
-		.yuv = true,
 		.lddfr = LDDFR_CC | LDDFR_YF_444,
+		.ldddsr = LDDDSR_LS | LDDDSR_WS,
+		.ldbbsifr = LDBBSIFR_AL_1 | LDBBSIFR_SWPL | LDBBSIFR_SWPW |
+			    LDBBSIFR_CHRR_444,
 	},
 };
 
@@ -112,7 +134,7 @@ shmob_drm_fb_create(struct drm_device *dev, struct drm_file *file_priv,
 		return ERR_PTR(-EINVAL);
 	}
 
-	if (format->yuv) {
+	if (shmob_drm_format_is_yuv(format)) {
 		unsigned int chroma_cpp = format->bpp == 24 ? 2 : 1;
 
 		if (mode_cmd->pitches[1] != mode_cmd->pitches[0] * chroma_cpp) {
@@ -127,29 +149,40 @@ shmob_drm_fb_create(struct drm_device *dev, struct drm_file *file_priv,
 
 static const struct drm_mode_config_funcs shmob_drm_mode_config_funcs = {
 	.fb_create = shmob_drm_fb_create,
+	.atomic_check = drm_atomic_helper_check,
+	.atomic_commit = drm_atomic_helper_commit,
 };
 
 int shmob_drm_modeset_init(struct shmob_drm_device *sdev)
 {
+	struct drm_device *dev = &sdev->ddev;
 	int ret;
 
-	ret = drmm_mode_config_init(sdev->ddev);
+	ret = drmm_mode_config_init(dev);
 	if (ret)
 		return ret;
 
-	shmob_drm_crtc_create(sdev);
-	shmob_drm_encoder_create(sdev);
-	shmob_drm_connector_create(sdev, &sdev->encoder.encoder);
+	ret = shmob_drm_crtc_create(sdev);
+	if (ret < 0)
+		return ret;
+
+	ret = shmob_drm_encoder_create(sdev);
+	if (ret < 0)
+		return ret;
+
+	ret = shmob_drm_connector_create(sdev, &sdev->encoder);
+	if (ret < 0)
+		return ret;
 
-	drm_kms_helper_poll_init(sdev->ddev);
+	drm_mode_config_reset(dev);
 
-	sdev->ddev->mode_config.min_width = 0;
-	sdev->ddev->mode_config.min_height = 0;
-	sdev->ddev->mode_config.max_width = 4095;
-	sdev->ddev->mode_config.max_height = 4095;
-	sdev->ddev->mode_config.funcs = &shmob_drm_mode_config_funcs;
+	drm_kms_helper_poll_init(dev);
 
-	drm_helper_disable_unused_functions(sdev->ddev);
+	sdev->ddev.mode_config.min_width = 0;
+	sdev->ddev.mode_config.min_height = 0;
+	sdev->ddev.mode_config.max_width = 4095;
+	sdev->ddev.mode_config.max_height = 4095;
+	sdev->ddev.mode_config.funcs = &shmob_drm_mode_config_funcs;
 
 	return 0;
 }

drivers/gpu/drm/renesas/shmobile/shmob_drm_kms.h

@@ -17,11 +17,14 @@ struct shmob_drm_device;
 
 struct shmob_drm_format_info {
 	u32 fourcc;
-	unsigned int bpp;
-	bool yuv;
-	u32 lddfr;
+	u32 lddfr;	/* LCD Data Format Register */
+	u16 ldbbsifr;	/* CHn Source Image Format Register low bits */
+	u8 ldddsr;	/* LCDC Input Image Data Swap Register low bits */
+	u8 bpp;
 };
 
+#define shmob_drm_format_is_yuv(format)	((format)->lddfr & LDDFR_CC)
+
 const struct shmob_drm_format_info *shmob_drm_format_info(u32 fourcc);
 
 int shmob_drm_modeset_init(struct shmob_drm_device *sdev);

drivers/gpu/drm/renesas/shmobile/shmob_drm_plane.h

@@ -13,7 +13,8 @@
 struct drm_plane;
 struct shmob_drm_device;
 
-int shmob_drm_plane_create(struct shmob_drm_device *sdev, unsigned int index);
-void shmob_drm_plane_setup(struct drm_plane *plane);
+struct drm_plane *shmob_drm_plane_create(struct shmob_drm_device *sdev,
+					 enum drm_plane_type type,
+					 unsigned int index);
 
 #endif /* __SHMOB_DRM_PLANE_H__ */

include/linux/platform_data/shmob_drm.h

@@ -10,7 +10,7 @@
 #ifndef __SHMOB_DRM_H__
 #define __SHMOB_DRM_H__
 
-#include <drm/drm_mode.h>
+#include <video/videomode.h>
 
 enum shmob_drm_clk_source {
 	SHMOB_DRM_CLK_BUS,
@@ -18,72 +18,21 @@ enum shmob_drm_clk_source {
 	SHMOB_DRM_CLK_EXTERNAL,
 };
 
-enum shmob_drm_interface {
-	SHMOB_DRM_IFACE_RGB8,		/* 24bpp, 8:8:8 */
-	SHMOB_DRM_IFACE_RGB9,		/* 18bpp, 9:9 */
-	SHMOB_DRM_IFACE_RGB12A,		/* 24bpp, 12:12 */
-	SHMOB_DRM_IFACE_RGB12B,		/* 12bpp */
-	SHMOB_DRM_IFACE_RGB16,		/* 16bpp */
-	SHMOB_DRM_IFACE_RGB18,		/* 18bpp */
-	SHMOB_DRM_IFACE_RGB24,		/* 24bpp */
-	SHMOB_DRM_IFACE_YUV422,		/* 16bpp */
-	SHMOB_DRM_IFACE_SYS8A,		/* 24bpp, 8:8:8 */
-	SHMOB_DRM_IFACE_SYS8B,		/* 18bpp, 8:8:2 */
-	SHMOB_DRM_IFACE_SYS8C,		/* 18bpp, 2:8:8 */
-	SHMOB_DRM_IFACE_SYS8D,		/* 16bpp, 8:8 */
-	SHMOB_DRM_IFACE_SYS9,		/* 18bpp, 9:9 */
-	SHMOB_DRM_IFACE_SYS12,		/* 24bpp, 12:12 */
-	SHMOB_DRM_IFACE_SYS16A,		/* 16bpp */
-	SHMOB_DRM_IFACE_SYS16B,		/* 18bpp, 16:2 */
-	SHMOB_DRM_IFACE_SYS16C,		/* 18bpp, 2:16 */
-	SHMOB_DRM_IFACE_SYS18,		/* 18bpp */
-	SHMOB_DRM_IFACE_SYS24,		/* 24bpp */
-};
-
-struct shmob_drm_backlight_data {
-	const char *name;
-	int max_brightness;
-	int (*get_brightness)(void);
-	int (*set_brightness)(int brightness);
-};
-
 struct shmob_drm_panel_data {
 	unsigned int width_mm;		/* Panel width in mm */
 	unsigned int height_mm;		/* Panel height in mm */
-	struct drm_mode_modeinfo mode;
+	struct videomode mode;
 };
 
-struct shmob_drm_sys_interface_data {
-	unsigned int read_latch:6;
-	unsigned int read_setup:8;
-	unsigned int read_cycle:8;
-	unsigned int read_strobe:8;
-	unsigned int write_setup:8;
-	unsigned int write_cycle:8;
-	unsigned int write_strobe:8;
-	unsigned int cs_setup:3;
-	unsigned int vsync_active_high:1;
-	unsigned int vsync_dir_input:1;
-};
-
-#define SHMOB_DRM_IFACE_FL_DWPOL (1 << 0) /* Rising edge dot clock data latch */
-#define SHMOB_DRM_IFACE_FL_DIPOL (1 << 1) /* Active low display enable */
-#define SHMOB_DRM_IFACE_FL_DAPOL (1 << 2) /* Active low display data */
-#define SHMOB_DRM_IFACE_FL_HSCNT (1 << 3) /* Disable HSYNC during VBLANK */
-#define SHMOB_DRM_IFACE_FL_DWCNT (1 << 4) /* Disable dotclock during blanking */
-
 struct shmob_drm_interface_data {
-	enum shmob_drm_interface interface;
-	struct shmob_drm_sys_interface_data sys;
+	unsigned int bus_fmt;		/* MEDIA_BUS_FMT_* */
 	unsigned int clk_div;
-	unsigned int flags;
 };
 
 struct shmob_drm_platform_data {
 	enum shmob_drm_clk_source clk_source;
 	struct shmob_drm_interface_data iface;
 	struct shmob_drm_panel_data panel;
-	struct shmob_drm_backlight_data backlight;
 };
 
 #endif /* __SHMOB_DRM_H__ */

include/uapi/linux/media-bus-format.h

@@ -34,7 +34,7 @@
 
 #define MEDIA_BUS_FMT_FIXED			0x0001
 
-/* RGB - next is	0x1025 */
+/* RGB - next is	0x1026 */
 #define MEDIA_BUS_FMT_RGB444_1X12		0x1016
 #define MEDIA_BUS_FMT_RGB444_2X8_PADHI_BE	0x1001
 #define MEDIA_BUS_FMT_RGB444_2X8_PADHI_LE	0x1002
@@ -46,6 +46,7 @@
 #define MEDIA_BUS_FMT_RGB565_2X8_BE		0x1007
 #define MEDIA_BUS_FMT_RGB565_2X8_LE		0x1008
 #define MEDIA_BUS_FMT_RGB666_1X18		0x1009
+#define MEDIA_BUS_FMT_RGB666_2X9_BE		0x1025
 #define MEDIA_BUS_FMT_BGR666_1X18		0x1023
 #define MEDIA_BUS_FMT_RBG888_1X24		0x100e
 #define MEDIA_BUS_FMT_RGB666_1X24_CPADHI	0x1015