Merge branch 'drm-lcdc' of git://linuxtv.org/pinchartl/fbdev into drm-next

Laurent writes:

The SH Mobile DRM driver is now (in my opinion) ready for mainline. It
requires GEM and KMS/FB helpers that have been reviewed on the list and
tested. Sascha is waiting for them to reach your tree to send a pull request
for another new driver.

* 'drm-lcdc' of git://linuxtv.org/pinchartl/fbdev:
  drm: Renesas SH Mobile DRM driver
  drm: Add NV24 and NV42 pixel formats
  DRM: Add DRM KMS/FB CMA helper
  DRM: Add DRM GEM CMA helper
  drm/edid: limit printk when facing bad edid

25 files changed, 3031 insertions, 11 deletions

diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index 0cbdc458011..18321b68b88 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -54,6 +54,21 @@ config DRM_TTM
 	  GPU memory types. Will be enabled automatically if a device driver
 	  uses it.
 
+config DRM_GEM_CMA_HELPER
+	bool
+	depends on DRM
+	help
+	  Choose this if you need the GEM CMA helper functions
+
+config DRM_KMS_CMA_HELPER
+	bool
+	select DRM_GEM_CMA_HELPER
+	select FB_SYS_FILLRECT
+	select FB_SYS_COPYAREA
+	select FB_SYS_IMAGEBLIT
+	help
+	  Choose this if you need the KMS CMA helper functions
+
 config DRM_TDFX
 	tristate "3dfx Banshee/Voodoo3+"
 	depends on DRM && PCI
@@ -193,3 +208,5 @@ source "drivers/gpu/drm/ast/Kconfig"
 source "drivers/gpu/drm/mgag200/Kconfig"
 
 source "drivers/gpu/drm/cirrus/Kconfig"
+
+source "drivers/gpu/drm/shmobile/Kconfig"
diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
index f65f65ed0dd..2ff5cefe9ea 100644
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -15,11 +15,13 @@ drm-y       :=	drm_auth.o drm_buffer.o drm_bufs.o drm_cache.o \
 		drm_trace_points.o drm_global.o drm_prime.o
 
 drm-$(CONFIG_COMPAT) += drm_ioc32.o
+drm-$(CONFIG_DRM_GEM_CMA_HELPER) += drm_gem_cma_helper.o
 
 drm-usb-y   := drm_usb.o
 
 drm_kms_helper-y := drm_fb_helper.o drm_crtc_helper.o drm_dp_i2c_helper.o
 drm_kms_helper-$(CONFIG_DRM_LOAD_EDID_FIRMWARE) += drm_edid_load.o
+drm_kms_helper-$(CONFIG_DRM_KMS_CMA_HELPER) += drm_fb_cma_helper.o
 
 obj-$(CONFIG_DRM_KMS_HELPER) += drm_kms_helper.o
 
@@ -45,4 +47,5 @@ obj-$(CONFIG_DRM_EXYNOS) +=exynos/
 obj-$(CONFIG_DRM_GMA500) += gma500/
 obj-$(CONFIG_DRM_UDL) += udl/
 obj-$(CONFIG_DRM_AST) += ast/
+obj-$(CONFIG_DRM_SHMOBILE) +=shmobile/
 obj-y			+= i2c/
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 08a7aa722d6..28d0900d7f8 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -2169,6 +2169,8 @@ static int format_check(const struct drm_mode_fb_cmd2 *r)
 	case DRM_FORMAT_NV21:
 	case DRM_FORMAT_NV16:
 	case DRM_FORMAT_NV61:
+	case DRM_FORMAT_NV24:
+	case DRM_FORMAT_NV42:
 	case DRM_FORMAT_YUV410:
 	case DRM_FORMAT_YVU410:
 	case DRM_FORMAT_YUV411:
@@ -3718,6 +3720,8 @@ int drm_format_num_planes(uint32_t format)
 	case DRM_FORMAT_NV21:
 	case DRM_FORMAT_NV16:
 	case DRM_FORMAT_NV61:
+	case DRM_FORMAT_NV24:
+	case DRM_FORMAT_NV42:
 		return 2;
 	default:
 		return 1;
@@ -3751,6 +3755,8 @@ int drm_format_plane_cpp(uint32_t format, int plane)
 	case DRM_FORMAT_NV21:
 	case DRM_FORMAT_NV16:
 	case DRM_FORMAT_NV61:
+	case DRM_FORMAT_NV24:
+	case DRM_FORMAT_NV42:
 		return plane ? 2 : 1;
 	case DRM_FORMAT_YUV410:
 	case DRM_FORMAT_YVU410:
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index acb489ff363..de2a0ed8e94 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -158,7 +158,7 @@ MODULE_PARM_DESC(edid_fixup,
  * Sanity check the EDID block (base or extension).  Return 0 if the block
  * doesn't check out, or 1 if it's valid.
  */
-bool drm_edid_block_valid(u8 *raw_edid, int block)
+bool drm_edid_block_valid(u8 *raw_edid, int block, bool print_bad_edid)
 {
 	int i;
 	u8 csum = 0;
@@ -181,7 +181,9 @@ bool drm_edid_block_valid(u8 *raw_edid, int block)
 	for (i = 0; i < EDID_LENGTH; i++)
 		csum += raw_edid[i];
 	if (csum) {
-		DRM_ERROR("EDID checksum is invalid, remainder is %d\n", csum);
+		if (print_bad_edid) {
+			DRM_ERROR("EDID checksum is invalid, remainder is %d\n", csum);
+		}
 
 		/* allow CEA to slide through, switches mangle this */
 		if (raw_edid[0] != 0x02)
@@ -207,7 +209,7 @@ bool drm_edid_block_valid(u8 *raw_edid, int block)
 	return 1;
 
 bad:
-	if (raw_edid) {
+	if (raw_edid && print_bad_edid) {
 		printk(KERN_ERR "Raw EDID:\n");
 		print_hex_dump(KERN_ERR, " \t", DUMP_PREFIX_NONE, 16, 1,
 			       raw_edid, EDID_LENGTH, false);
@@ -231,7 +233,7 @@ bool drm_edid_is_valid(struct edid *edid)
 		return false;
 
 	for (i = 0; i <= edid->extensions; i++)
-		if (!drm_edid_block_valid(raw + i * EDID_LENGTH, i))
+		if (!drm_edid_block_valid(raw + i * EDID_LENGTH, i, true))
 			return false;
 
 	return true;
@@ -316,6 +318,7 @@ drm_do_get_edid(struct drm_connector *connector, struct i2c_adapter *adapter)
 {
 	int i, j = 0, valid_extensions = 0;
 	u8 *block, *new;
+	bool print_bad_edid = !connector->bad_edid_counter || (drm_debug & DRM_UT_KMS);
 
 	if ((block = kmalloc(EDID_LENGTH, GFP_KERNEL)) == NULL)
 		return NULL;
@@ -324,7 +327,7 @@ drm_do_get_edid(struct drm_connector *connector, struct i2c_adapter *adapter)
 	for (i = 0; i < 4; i++) {
 		if (drm_do_probe_ddc_edid(adapter, block, 0, EDID_LENGTH))
 			goto out;
-		if (drm_edid_block_valid(block, 0))
+		if (drm_edid_block_valid(block, 0, print_bad_edid))
 			break;
 		if (i == 0 && drm_edid_is_zero(block, EDID_LENGTH)) {
 			connector->null_edid_counter++;
@@ -349,7 +352,7 @@ drm_do_get_edid(struct drm_connector *connector, struct i2c_adapter *adapter)
 				  block + (valid_extensions + 1) * EDID_LENGTH,
 				  j, EDID_LENGTH))
 				goto out;
-			if (drm_edid_block_valid(block + (valid_extensions + 1) * EDID_LENGTH, j)) {
+			if (drm_edid_block_valid(block + (valid_extensions + 1) * EDID_LENGTH, j, print_bad_edid)) {
 				valid_extensions++;
 				break;
 			}
@@ -372,8 +375,11 @@ drm_do_get_edid(struct drm_connector *connector, struct i2c_adapter *adapter)
 	return block;
 
 carp:
-	dev_warn(connector->dev->dev, "%s: EDID block %d invalid.\n",
-		 drm_get_connector_name(connector), j);
+	if (print_bad_edid) {
+		dev_warn(connector->dev->dev, "%s: EDID block %d invalid.\n",
+			 drm_get_connector_name(connector), j);
+	}
+	connector->bad_edid_counter++;
 
 out:
 	kfree(block);
diff --git a/drivers/gpu/drm/drm_edid_load.c b/drivers/gpu/drm/drm_edid_load.c
index 186832e1874..ea9cdab3d43 100644
--- a/drivers/gpu/drm/drm_edid_load.c
+++ b/drivers/gpu/drm/drm_edid_load.c
@@ -123,6 +123,7 @@ static u8 *edid_load(struct drm_connector *connector, char *name,
 	int fwsize, expected;
 	int builtin = 0, err = 0;
 	int i, valid_extensions = 0;
+	bool print_bad_edid = !connector->bad_edid_counter || (drm_debug & DRM_UT_KMS);
 
 	pdev = platform_device_register_simple(connector_name, -1, NULL, 0);
 	if (IS_ERR(pdev)) {
@@ -173,7 +174,8 @@ static u8 *edid_load(struct drm_connector *connector, char *name,
 	}
 	memcpy(edid, fwdata, fwsize);
 
-	if (!drm_edid_block_valid(edid, 0)) {
+	if (!drm_edid_block_valid(edid, 0, print_bad_edid)) {
+		connector->bad_edid_counter++;
 		DRM_ERROR("Base block of EDID firmware \"%s\" is invalid ",
 		    name);
 		kfree(edid);
@@ -185,7 +187,7 @@ static u8 *edid_load(struct drm_connector *connector, char *name,
 		if (i != valid_extensions + 1)
 			memcpy(edid + (valid_extensions + 1) * EDID_LENGTH,
 			    edid + i * EDID_LENGTH, EDID_LENGTH);
-		if (drm_edid_block_valid(edid + i * EDID_LENGTH, i))
+		if (drm_edid_block_valid(edid + i * EDID_LENGTH, i, print_bad_edid))
 			valid_extensions++;
 	}
 
diff --git a/drivers/gpu/drm/drm_fb_cma_helper.c b/drivers/gpu/drm/drm_fb_cma_helper.c
new file mode 100644
index 00000000000..09e11a5d921
--- /dev/null
+++ b/drivers/gpu/drm/drm_fb_cma_helper.c
@@ -0,0 +1,406 @@
+/*
+ * drm kms/fb cma (contiguous memory allocator) helper functions
+ *
+ * Copyright (C) 2012 Analog Device Inc.
+ *   Author: Lars-Peter Clausen <lars@metafoo.de>
+ *
+ * Based on udl_fbdev.c
+ *  Copyright (C) 2012 Red Hat
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <drm/drmP.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_fb_helper.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_fb_cma_helper.h>
+#include <linux/module.h>
+
+struct drm_fb_cma {
+	struct drm_framebuffer		fb;
+	struct drm_gem_cma_object	*obj[4];
+};
+
+struct drm_fbdev_cma {
+	struct drm_fb_helper	fb_helper;
+	struct drm_fb_cma	*fb;
+};
+
+static inline struct drm_fbdev_cma *to_fbdev_cma(struct drm_fb_helper *helper)
+{
+	return container_of(helper, struct drm_fbdev_cma, fb_helper);
+}
+
+static inline struct drm_fb_cma *to_fb_cma(struct drm_framebuffer *fb)
+{
+	return container_of(fb, struct drm_fb_cma, fb);
+}
+
+static void drm_fb_cma_destroy(struct drm_framebuffer *fb)
+{
+	struct drm_fb_cma *fb_cma = to_fb_cma(fb);
+	int i;
+
+	for (i = 0; i < 4; i++) {
+		if (fb_cma->obj[i])
+			drm_gem_object_unreference_unlocked(&fb_cma->obj[i]->base);
+	}
+
+	drm_framebuffer_cleanup(fb);
+	kfree(fb_cma);
+}
+
+static int drm_fb_cma_create_handle(struct drm_framebuffer *fb,
+	struct drm_file *file_priv, unsigned int *handle)
+{
+	struct drm_fb_cma *fb_cma = to_fb_cma(fb);
+
+	return drm_gem_handle_create(file_priv,
+			&fb_cma->obj[0]->base, handle);
+}
+
+static struct drm_framebuffer_funcs drm_fb_cma_funcs = {
+	.destroy	= drm_fb_cma_destroy,
+	.create_handle	= drm_fb_cma_create_handle,
+};
+
+static struct drm_fb_cma *drm_fb_cma_alloc(struct drm_device *dev,
+	struct drm_mode_fb_cmd2 *mode_cmd, struct drm_gem_cma_object **obj,
+	unsigned int num_planes)
+{
+	struct drm_fb_cma *fb_cma;
+	int ret;
+	int i;
+
+	fb_cma = kzalloc(sizeof(*fb_cma), GFP_KERNEL);
+	if (!fb_cma)
+		return ERR_PTR(-ENOMEM);
+
+	ret = drm_framebuffer_init(dev, &fb_cma->fb, &drm_fb_cma_funcs);
+	if (ret) {
+		dev_err(dev->dev, "Failed to initalize framebuffer: %d\n", ret);
+		kfree(fb_cma);
+		return ERR_PTR(ret);
+	}
+
+	drm_helper_mode_fill_fb_struct(&fb_cma->fb, mode_cmd);
+
+	for (i = 0; i < num_planes; i++)
+		fb_cma->obj[i] = obj[i];
+
+	return fb_cma;
+}
+
+/**
+ * drm_fb_cma_create() - (struct drm_mode_config_funcs *)->fb_create callback function
+ *
+ * If your hardware has special alignment or pitch requirements these should be
+ * checked before calling this function.
+ */
+struct drm_framebuffer *drm_fb_cma_create(struct drm_device *dev,
+	struct drm_file *file_priv, struct drm_mode_fb_cmd2 *mode_cmd)
+{
+	struct drm_fb_cma *fb_cma;
+	struct drm_gem_cma_object *objs[4];
+	struct drm_gem_object *obj;
+	unsigned int hsub;
+	unsigned int vsub;
+	int ret;
+	int i;
+
+	hsub = drm_format_horz_chroma_subsampling(mode_cmd->pixel_format);
+	vsub = drm_format_vert_chroma_subsampling(mode_cmd->pixel_format);
+
+	for (i = 0; i < drm_format_num_planes(mode_cmd->pixel_format); i++) {
+		unsigned int width = mode_cmd->width / (i ? hsub : 1);
+		unsigned int height = mode_cmd->height / (i ? vsub : 1);
+		unsigned int min_size;
+
+		obj = drm_gem_object_lookup(dev, file_priv, mode_cmd->handles[i]);
+		if (!obj) {
+			dev_err(dev->dev, "Failed to lookup GEM object\n");
+			ret = -ENXIO;
+			goto err_gem_object_unreference;
+		}
+
+		min_size = (height - 1) * mode_cmd->pitches[i]
+			 + width * drm_format_plane_cpp(mode_cmd->pixel_format, i)
+			 + mode_cmd->offsets[i];
+
+		if (obj->size < min_size) {
+			drm_gem_object_unreference_unlocked(obj);
+			ret = -EINVAL;
+			goto err_gem_object_unreference;
+		}
+		objs[i] = to_drm_gem_cma_obj(obj);
+	}
+
+	fb_cma = drm_fb_cma_alloc(dev, mode_cmd, objs, i);
+	if (IS_ERR(fb_cma)) {
+		ret = PTR_ERR(fb_cma);
+		goto err_gem_object_unreference;
+	}
+
+	return &fb_cma->fb;
+
+err_gem_object_unreference:
+	for (i--; i >= 0; i--)
+		drm_gem_object_unreference_unlocked(&objs[i]->base);
+	return ERR_PTR(ret);
+}
+EXPORT_SYMBOL_GPL(drm_fb_cma_create);
+
+/**
+ * drm_fb_cma_get_gem_obj() - Get CMA GEM object for framebuffer
+ * @fb: The framebuffer
+ * @plane: Which plane
+ *
+ * Return the CMA GEM object for given framebuffer.
+ *
+ * This function will usually be called from the CRTC callback functions.
+ */
+struct drm_gem_cma_object *drm_fb_cma_get_gem_obj(struct drm_framebuffer *fb,
+	unsigned int plane)
+{
+	struct drm_fb_cma *fb_cma = to_fb_cma(fb);
+
+	if (plane >= 4)
+		return NULL;
+
+	return fb_cma->obj[plane];
+}
+EXPORT_SYMBOL_GPL(drm_fb_cma_get_gem_obj);
+
+static struct fb_ops drm_fbdev_cma_ops = {
+	.owner		= THIS_MODULE,
+	.fb_fillrect	= sys_fillrect,
+	.fb_copyarea	= sys_copyarea,
+	.fb_imageblit	= sys_imageblit,
+	.fb_check_var	= drm_fb_helper_check_var,
+	.fb_set_par	= drm_fb_helper_set_par,
+	.fb_blank	= drm_fb_helper_blank,
+	.fb_pan_display	= drm_fb_helper_pan_display,
+	.fb_setcmap	= drm_fb_helper_setcmap,
+};
+
+static int drm_fbdev_cma_create(struct drm_fb_helper *helper,
+	struct drm_fb_helper_surface_size *sizes)
+{
+	struct drm_fbdev_cma *fbdev_cma = to_fbdev_cma(helper);
+	struct drm_mode_fb_cmd2 mode_cmd = { 0 };
+	struct drm_device *dev = helper->dev;
+	struct drm_gem_cma_object *obj;
+	struct drm_framebuffer *fb;
+	unsigned int bytes_per_pixel;
+	unsigned long offset;
+	struct fb_info *fbi;
+	size_t size;
+	int ret;
+
+	DRM_DEBUG_KMS("surface width(%d), height(%d) and bpp(%d\n",
+			sizes->surface_width, sizes->surface_height,
+			sizes->surface_bpp);
+
+	bytes_per_pixel = DIV_ROUND_UP(sizes->surface_bpp, 8);
+
+	mode_cmd.width = sizes->surface_width;
+	mode_cmd.height = sizes->surface_height;
+	mode_cmd.pitches[0] = sizes->surface_width * bytes_per_pixel;
+	mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
+		sizes->surface_depth);
+
+	size = mode_cmd.pitches[0] * mode_cmd.height;
+	obj = drm_gem_cma_create(dev, size);
+	if (!obj)
+		return -ENOMEM;
+
+	fbi = framebuffer_alloc(0, dev->dev);
+	if (!fbi) {
+		dev_err(dev->dev, "Failed to allocate framebuffer info.\n");
+		ret = -ENOMEM;
+		goto err_drm_gem_cma_free_object;
+	}
+
+	fbdev_cma->fb = drm_fb_cma_alloc(dev, &mode_cmd, &obj, 1);
+	if (IS_ERR(fbdev_cma->fb)) {
+		dev_err(dev->dev, "Failed to allocate DRM framebuffer.\n");
+		ret = PTR_ERR(fbdev_cma->fb);
+		goto err_framebuffer_release;
+	}
+
+	fb = &fbdev_cma->fb->fb;
+	helper->fb = fb;
+	helper->fbdev = fbi;
+
+	fbi->par = helper;
+	fbi->flags = FBINFO_FLAG_DEFAULT;
+	fbi->fbops = &drm_fbdev_cma_ops;
+
+	ret = fb_alloc_cmap(&fbi->cmap, 256, 0);
+	if (ret) {
+		dev_err(dev->dev, "Failed to allocate color map.\n");
+		goto err_drm_fb_cma_destroy;
+	}
+
+	drm_fb_helper_fill_fix(fbi, fb->pitches[0], fb->depth);
+	drm_fb_helper_fill_var(fbi, helper, fb->width, fb->height);
+
+	offset = fbi->var.xoffset * bytes_per_pixel;
+	offset += fbi->var.yoffset * fb->pitches[0];
+
+	dev->mode_config.fb_base = (resource_size_t)obj->paddr;
+	fbi->screen_base = obj->vaddr + offset;
+	fbi->fix.smem_start = (unsigned long)(obj->paddr + offset);
+	fbi->screen_size = size;
+	fbi->fix.smem_len = size;
+
+	return 0;
+
+err_drm_fb_cma_destroy:
+	drm_fb_cma_destroy(fb);
+err_framebuffer_release:
+	framebuffer_release(fbi);
+err_drm_gem_cma_free_object:
+	drm_gem_cma_free_object(&obj->base);
+	return ret;
+}
+
+static int drm_fbdev_cma_probe(struct drm_fb_helper *helper,
+	struct drm_fb_helper_surface_size *sizes)
+{
+	int ret = 0;
+
+	if (!helper->fb) {
+		ret = drm_fbdev_cma_create(helper, sizes);
+		if (ret < 0)
+			return ret;
+		ret = 1;
+	}
+
+	return ret;
+}
+
+static struct drm_fb_helper_funcs drm_fb_cma_helper_funcs = {
+	.fb_probe = drm_fbdev_cma_probe,
+};
+
+/**
+ * drm_fbdev_cma_init() - Allocate and initializes a drm_fbdev_cma struct
+ * @dev: DRM device
+ * @preferred_bpp: Preferred bits per pixel for the device
+ * @num_crtc: Number of CRTCs
+ * @max_conn_count: Maximum number of connectors
+ *
+ * Returns a newly allocated drm_fbdev_cma struct or a ERR_PTR.
+ */
+struct drm_fbdev_cma *drm_fbdev_cma_init(struct drm_device *dev,
+	unsigned int preferred_bpp, unsigned int num_crtc,
+	unsigned int max_conn_count)
+{
+	struct drm_fbdev_cma *fbdev_cma;
+	struct drm_fb_helper *helper;
+	int ret;
+
+	fbdev_cma = kzalloc(sizeof(*fbdev_cma), GFP_KERNEL);
+	if (!fbdev_cma) {
+		dev_err(dev->dev, "Failed to allocate drm fbdev.\n");
+		return ERR_PTR(-ENOMEM);
+	}
+
+	fbdev_cma->fb_helper.funcs = &drm_fb_cma_helper_funcs;
+	helper = &fbdev_cma->fb_helper;
+
+	ret = drm_fb_helper_init(dev, helper, num_crtc, max_conn_count);
+	if (ret < 0) {
+		dev_err(dev->dev, "Failed to initialize drm fb helper.\n");
+		goto err_free;
+	}
+
+	ret = drm_fb_helper_single_add_all_connectors(helper);
+	if (ret < 0) {
+		dev_err(dev->dev, "Failed to add connectors.\n");
+		goto err_drm_fb_helper_fini;
+
+	}
+
+	ret = drm_fb_helper_initial_config(helper, preferred_bpp);
+	if (ret < 0) {
+		dev_err(dev->dev, "Failed to set inital hw configuration.\n");
+		goto err_drm_fb_helper_fini;
+	}
+
+	return fbdev_cma;
+
+err_drm_fb_helper_fini:
+	drm_fb_helper_fini(helper);
+err_free:
+	kfree(fbdev_cma);
+
+	return ERR_PTR(ret);
+}
+EXPORT_SYMBOL_GPL(drm_fbdev_cma_init);
+
+/**
+ * drm_fbdev_cma_fini() - Free drm_fbdev_cma struct
+ * @fbdev_cma: The drm_fbdev_cma struct
+ */
+void drm_fbdev_cma_fini(struct drm_fbdev_cma *fbdev_cma)
+{
+	if (fbdev_cma->fb_helper.fbdev) {
+		struct fb_info *info;
+		int ret;
+
+		info = fbdev_cma->fb_helper.fbdev;
+		ret = unregister_framebuffer(info);
+		if (ret < 0)
+			DRM_DEBUG_KMS("failed unregister_framebuffer()\n");
+
+		if (info->cmap.len)
+			fb_dealloc_cmap(&info->cmap);
+
+		framebuffer_release(info);
+	}
+
+	if (fbdev_cma->fb)
+		drm_fb_cma_destroy(&fbdev_cma->fb->fb);
+
+	drm_fb_helper_fini(&fbdev_cma->fb_helper);
+	kfree(fbdev_cma);
+}
+EXPORT_SYMBOL_GPL(drm_fbdev_cma_fini);
+
+/**
+ * drm_fbdev_cma_restore_mode() - Restores initial framebuffer mode
+ * @fbdev_cma: The drm_fbdev_cma struct, may be NULL
+ *
+ * This function is usually called from the DRM drivers lastclose callback.
+ */
+void drm_fbdev_cma_restore_mode(struct drm_fbdev_cma *fbdev_cma)
+{
+	if (fbdev_cma)
+		drm_fb_helper_restore_fbdev_mode(&fbdev_cma->fb_helper);
+}
+EXPORT_SYMBOL_GPL(drm_fbdev_cma_restore_mode);
+
+/**
+ * drm_fbdev_cma_hotplug_event() - Poll for hotpulug events
+ * @fbdev_cma: The drm_fbdev_cma struct, may be NULL
+ *
+ * This function is usually called from the DRM drivers output_poll_changed
+ * callback.
+ */
+void drm_fbdev_cma_hotplug_event(struct drm_fbdev_cma *fbdev_cma)
+{
+	if (fbdev_cma)
+		drm_fb_helper_hotplug_event(&fbdev_cma->fb_helper);
+}
+EXPORT_SYMBOL_GPL(drm_fbdev_cma_hotplug_event);
diff --git a/drivers/gpu/drm/drm_gem_cma_helper.c b/drivers/gpu/drm/drm_gem_cma_helper.c
new file mode 100644
index 00000000000..1aa8fee1e86
--- /dev/null
+++ b/drivers/gpu/drm/drm_gem_cma_helper.c
@@ -0,0 +1,251 @@
+/*
+ * drm gem CMA (contiguous memory allocator) helper functions
+ *
+ * Copyright (C) 2012 Sascha Hauer, Pengutronix
+ *
+ * Based on Samsung Exynos code
+ *
+ * Copyright (c) 2011 Samsung Electronics Co., Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/mutex.h>
+#include <linux/export.h>
+#include <linux/dma-mapping.h>
+
+#include <drm/drmP.h>
+#include <drm/drm.h>
+#include <drm/drm_gem_cma_helper.h>
+
+static unsigned int get_gem_mmap_offset(struct drm_gem_object *obj)
+{
+	return (unsigned int)obj->map_list.hash.key << PAGE_SHIFT;
+}
+
+static void drm_gem_cma_buf_destroy(struct drm_device *drm,
+		struct drm_gem_cma_object *cma_obj)
+{
+	dma_free_writecombine(drm->dev, cma_obj->base.size, cma_obj->vaddr,
+			cma_obj->paddr);
+}
+
+/*
+ * drm_gem_cma_create - allocate an object with the given size
+ *
+ * returns a struct drm_gem_cma_object* on success or ERR_PTR values
+ * on failure.
+ */
+struct drm_gem_cma_object *drm_gem_cma_create(struct drm_device *drm,
+		unsigned int size)
+{
+	struct drm_gem_cma_object *cma_obj;
+	struct drm_gem_object *gem_obj;
+	int ret;
+
+	size = round_up(size, PAGE_SIZE);
+
+	cma_obj = kzalloc(sizeof(*cma_obj), GFP_KERNEL);
+	if (!cma_obj)
+		return ERR_PTR(-ENOMEM);
+
+	cma_obj->vaddr = dma_alloc_writecombine(drm->dev, size,
+			&cma_obj->paddr, GFP_KERNEL | __GFP_NOWARN);
+	if (!cma_obj->vaddr) {
+		dev_err(drm->dev, "failed to allocate buffer with size %d\n", size);
+		ret = -ENOMEM;
+		goto err_dma_alloc;
+	}
+
+	gem_obj = &cma_obj->base;
+
+	ret = drm_gem_object_init(drm, gem_obj, size);
+	if (ret)
+		goto err_obj_init;
+
+	ret = drm_gem_create_mmap_offset(gem_obj);
+	if (ret)
+		goto err_create_mmap_offset;
+
+	return cma_obj;
+
+err_create_mmap_offset:
+	drm_gem_object_release(gem_obj);
+
+err_obj_init:
+	drm_gem_cma_buf_destroy(drm, cma_obj);
+
+err_dma_alloc:
+	kfree(cma_obj);
+
+	return ERR_PTR(ret);
+}
+EXPORT_SYMBOL_GPL(drm_gem_cma_create);
+
+/*
+ * drm_gem_cma_create_with_handle - allocate an object with the given
+ * size and create a gem handle on it
+ *
+ * returns a struct drm_gem_cma_object* on success or ERR_PTR values
+ * on failure.
+ */
+static struct drm_gem_cma_object *drm_gem_cma_create_with_handle(
+		struct drm_file *file_priv,
+		struct drm_device *drm, unsigned int size,
+		unsigned int *handle)
+{
+	struct drm_gem_cma_object *cma_obj;
+	struct drm_gem_object *gem_obj;
+	int ret;
+
+	cma_obj = drm_gem_cma_create(drm, size);
+	if (IS_ERR(cma_obj))
+		return cma_obj;
+
+	gem_obj = &cma_obj->base;
+
+	/*
+	 * allocate a id of idr table where the obj is registered
+	 * and handle has the id what user can see.
+	 */
+	ret = drm_gem_handle_create(file_priv, gem_obj, handle);
+	if (ret)
+		goto err_handle_create;
+
+	/* drop reference from allocate - handle holds it now. */
+	drm_gem_object_unreference_unlocked(gem_obj);
+
+	return cma_obj;
+
+err_handle_create:
+	drm_gem_cma_free_object(gem_obj);
+
+	return ERR_PTR(ret);
+}
+
+/*
+ * drm_gem_cma_free_object - (struct drm_driver)->gem_free_object callback
+ * function
+ */
+void drm_gem_cma_free_object(struct drm_gem_object *gem_obj)
+{
+	struct drm_gem_cma_object *cma_obj;
+
+	if (gem_obj->map_list.map)
+		drm_gem_free_mmap_offset(gem_obj);
+
+	drm_gem_object_release(gem_obj);
+
+	cma_obj = to_drm_gem_cma_obj(gem_obj);
+
+	drm_gem_cma_buf_destroy(gem_obj->dev, cma_obj);
+
+	kfree(cma_obj);
+}
+EXPORT_SYMBOL_GPL(drm_gem_cma_free_object);
+
+/*
+ * drm_gem_cma_dumb_create - (struct drm_driver)->dumb_create callback
+ * function
+ *
+ * This aligns the pitch and size arguments to the minimum required. wrap
+ * this into your own function if you need bigger alignment.
+ */
+int drm_gem_cma_dumb_create(struct drm_file *file_priv,
+		struct drm_device *dev, struct drm_mode_create_dumb *args)
+{
+	struct drm_gem_cma_object *cma_obj;
+	int min_pitch = DIV_ROUND_UP(args->width * args->bpp, 8);
+
+	if (args->pitch < min_pitch)
+		args->pitch = min_pitch;
+
+	if (args->size < args->pitch * args->height)
+		args->size = args->pitch * args->height;
+
+	cma_obj = drm_gem_cma_create_with_handle(file_priv, dev,
+			args->size, &args->handle);
+	if (IS_ERR(cma_obj))
+		return PTR_ERR(cma_obj);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(drm_gem_cma_dumb_create);
+
+/*
+ * drm_gem_cma_dumb_map_offset - (struct drm_driver)->dumb_map_offset callback
+ * function
+ */
+int drm_gem_cma_dumb_map_offset(struct drm_file *file_priv,
+		struct drm_device *drm, uint32_t handle, uint64_t *offset)
+{
+	struct drm_gem_object *gem_obj;
+
+	mutex_lock(&drm->struct_mutex);
+
+	gem_obj = drm_gem_object_lookup(drm, file_priv, handle);
+	if (!gem_obj) {
+		dev_err(drm->dev, "failed to lookup gem object\n");
+		mutex_unlock(&drm->struct_mutex);
+		return -EINVAL;
+	}
+
+	*offset = get_gem_mmap_offset(gem_obj);
+
+	drm_gem_object_unreference(gem_obj);
+
+	mutex_unlock(&drm->struct_mutex);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(drm_gem_cma_dumb_map_offset);
+
+const struct vm_operations_struct drm_gem_cma_vm_ops = {
+	.open = drm_gem_vm_open,
+	.close = drm_gem_vm_close,
+};
+EXPORT_SYMBOL_GPL(drm_gem_cma_vm_ops);
+
+/*
+ * drm_gem_cma_mmap - (struct file_operation)->mmap callback function
+ */
+int drm_gem_cma_mmap(struct file *filp, struct vm_area_struct *vma)
+{
+	struct drm_gem_object *gem_obj;
+	struct drm_gem_cma_object *cma_obj;
+	int ret;
+
+	ret = drm_gem_mmap(filp, vma);
+	if (ret)
+		return ret;
+
+	gem_obj = vma->vm_private_data;
+	cma_obj = to_drm_gem_cma_obj(gem_obj);
+
+	ret = remap_pfn_range(vma, vma->vm_start, cma_obj->paddr >> PAGE_SHIFT,
+			vma->vm_end - vma->vm_start, vma->vm_page_prot);
+	if (ret)
+		drm_gem_vm_close(vma);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(drm_gem_cma_mmap);
+
+/*
+ * drm_gem_cma_dumb_destroy - (struct drm_driver)->dumb_destroy callback function
+ */
+int drm_gem_cma_dumb_destroy(struct drm_file *file_priv,
+		struct drm_device *drm, unsigned int handle)
+{
+	return drm_gem_handle_delete(file_priv, handle);
+}
+EXPORT_SYMBOL_GPL(drm_gem_cma_dumb_destroy);
diff --git a/drivers/gpu/drm/shmobile/Kconfig b/drivers/gpu/drm/shmobile/Kconfig
new file mode 100644
index 00000000000..7e7d52b2a2f
--- /dev/null
+++ b/drivers/gpu/drm/shmobile/Kconfig
@@ -0,0 +1,10 @@
+config DRM_SHMOBILE
+	tristate "DRM Support for SH Mobile"
+	depends on DRM && (SUPERH || ARCH_SHMOBILE)
+	select DRM_KMS_HELPER
+	select DRM_KMS_CMA_HELPER
+	select DRM_GEM_CMA_HELPER
+	help
+	  Choose this option if you have an SH Mobile chipset.
+	  If M is selected the module will be called shmob-drm.
+
diff --git a/drivers/gpu/drm/shmobile/Makefile b/drivers/gpu/drm/shmobile/Makefile
new file mode 100644
index 00000000000..4c3eeb35563
--- /dev/null
+++ b/drivers/gpu/drm/shmobile/Makefile
@@ -0,0 +1,7 @@
+shmob-drm-y := shmob_drm_backlight.o \
+	       shmob_drm_crtc.o \
+	       shmob_drm_drv.o \
+	       shmob_drm_kms.o \
+	       shmob_drm_plane.o
+
+obj-$(CONFIG_DRM_SHMOBILE)	+= shmob-drm.o
diff --git a/drivers/gpu/drm/shmobile/shmob_drm_backlight.c b/drivers/gpu/drm/shmobile/shmob_drm_backlight.c
new file mode 100644
index 00000000000..463aee18f77
--- /dev/null
+++ b/drivers/gpu/drm/shmobile/shmob_drm_backlight.c
@@ -0,0 +1,90 @@
+/*
+ * shmob_drm_backlight.c  --  SH Mobile DRM Backlight
+ *
+ * Copyright (C) 2012 Renesas Corporation
+ *
+ * Laurent Pinchart (laurent.pinchart@ideasonboard.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#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 = bdev->props.brightness;
+
+	if (bdev->props.power != FB_BLANK_UNBLANK ||
+	    bdev->props.state & BL_CORE_SUSPENDED)
+		brightness = 0;
+
+	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);
+}
diff --git a/drivers/gpu/drm/shmobile/shmob_drm_backlight.h b/drivers/gpu/drm/shmobile/shmob_drm_backlight.h
new file mode 100644
index 00000000000..9477595d2ff
--- /dev/null
+++ b/drivers/gpu/drm/shmobile/shmob_drm_backlight.h
@@ -0,0 +1,23 @@
+/*
+ * shmob_drm_backlight.h  --  SH Mobile DRM Backlight
+ *
+ * Copyright (C) 2012 Renesas Corporation
+ *
+ * Laurent Pinchart (laurent.pinchart@ideasonboard.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#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__ */
diff --git a/drivers/gpu/drm/shmobile/shmob_drm_crtc.c b/drivers/gpu/drm/shmobile/shmob_drm_crtc.c
new file mode 100644
index 00000000000..0e7a9306bd0
--- /dev/null
+++ b/drivers/gpu/drm/shmobile/shmob_drm_crtc.c
@@ -0,0 +1,763 @@
+/*
+ * shmob_drm_crtc.c  --  SH Mobile DRM CRTCs
+ *
+ * Copyright (C) 2012 Renesas Corporation
+ *
+ * Laurent Pinchart (laurent.pinchart@ideasonboard.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/backlight.h>
+#include <linux/clk.h>
+
+#include <drm/drmP.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_fb_cma_helper.h>
+#include <drm/drm_gem_cma_helper.h>
+
+#include <video/sh_mobile_meram.h>
+
+#include "shmob_drm_backlight.h"
+#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"
+
+/*
+ * TODO: panel support
+ */
+
+/* -----------------------------------------------------------------------------
+ * Clock management
+ */
+
+static void shmob_drm_clk_on(struct shmob_drm_device *sdev)
+{
+	if (sdev->clock)
+		clk_enable(sdev->clock);
+#if 0
+	if (sdev->meram_dev && sdev->meram_dev->pdev)
+		pm_runtime_get_sync(&sdev->meram_dev->pdev->dev);
+#endif
+}
+
+static void shmob_drm_clk_off(struct shmob_drm_device *sdev)
+{
+#if 0
+	if (sdev->meram_dev && sdev->meram_dev->pdev)
+		pm_runtime_put_sync(&sdev->meram_dev->pdev->dev);
+#endif
+	if (sdev->clock)
+		clk_disable(sdev->clock);
+}
+
+/* -----------------------------------------------------------------------------
+ * CRTC
+ */
+
+static void shmob_drm_crtc_setup_geometry(struct shmob_drm_crtc *scrtc)
+{
+	struct drm_crtc *crtc = &scrtc->crtc;
+	struct shmob_drm_device *sdev = crtc->dev->dev_private;
+	const struct shmob_drm_interface_data *idata = &sdev->pdata->iface;
+	const struct drm_display_mode *mode = &crtc->mode;
+	u32 value;
+
+	value = sdev->ldmt1r
+	      | ((mode->flags & DRM_MODE_FLAG_PVSYNC) ? 0 : LDMT1R_VPOL)
+	      | ((mode->flags & DRM_MODE_FLAG_PHSYNC) ? 0 : LDMT1R_HPOL)
+	      | ((idata->flags & SHMOB_DRM_IFACE_FL_DWPOL) ? LDMT1R_DWPOL : 0)
+	      | ((idata->flags & SHMOB_DRM_IFACE_FL_DIPOL) ? LDMT1R_DIPOL : 0)
+	      | ((idata->flags & SHMOB_DRM_IFACE_FL_DAPOL) ? LDMT1R_DAPOL : 0)
+	      | ((idata->flags & SHMOB_DRM_IFACE_FL_HSCNT) ? LDMT1R_HSCNT : 0)
+	      | ((idata->flags & SHMOB_DRM_IFACE_FL_DWCNT) ? LDMT1R_DWCNT : 0);
+	lcdc_write(sdev, LDMT1R, value);
+
+	if (idata->interface >= SHMOB_DRM_IFACE_SYS8A &&
+	    idata->interface <= SHMOB_DRM_IFACE_SYS24) {
+		/* Setup SYS bus. */
+		value = (idata->sys.cs_setup << LDMT2R_CSUP_SHIFT)
+		      | (idata->sys.vsync_active_high ? LDMT2R_RSV : 0)
+		      | (idata->sys.vsync_dir_input ? LDMT2R_VSEL : 0)
+		      | (idata->sys.write_setup << LDMT2R_WCSC_SHIFT)
+		      | (idata->sys.write_cycle << LDMT2R_WCEC_SHIFT)
+		      | (idata->sys.write_strobe << LDMT2R_WCLW_SHIFT);
+		lcdc_write(sdev, LDMT2R, value);
+
+		value = (idata->sys.read_latch << LDMT3R_RDLC_SHIFT)
+		      | (idata->sys.read_setup << LDMT3R_RCSC_SHIFT)
+		      | (idata->sys.read_cycle << LDMT3R_RCEC_SHIFT)
+		      | (idata->sys.read_strobe << LDMT3R_RCLW_SHIFT);
+		lcdc_write(sdev, LDMT3R, value);
+	}
+
+	value = ((mode->hdisplay / 8) << 16)			/* HDCN */
+	      | (mode->htotal / 8);				/* HTCN */
+	lcdc_write(sdev, LDHCNR, value);
+
+	value = (((mode->hsync_end - mode->hsync_start) / 8) << 16) /* HSYNW */
+	      | (mode->hsync_start / 8);			/* HSYNP */
+	lcdc_write(sdev, LDHSYNR, value);
+
+	value = ((mode->hdisplay & 7) << 24) | ((mode->htotal & 7) << 16)
+	      | (((mode->hsync_end - mode->hsync_start) & 7) << 8)
+	      | (mode->hsync_start & 7);
+	lcdc_write(sdev, LDHAJR, value);
+
+	value = ((mode->vdisplay) << 16)			/* VDLN */
+	      | mode->vtotal;					/* VTLN */
+	lcdc_write(sdev, LDVLNR, value);
+
+	value = ((mode->vsync_end - mode->vsync_start) << 16)	/* VSYNW */
+	      | mode->vsync_start;				/* VSYNP */
+	lcdc_write(sdev, LDVSYNR, value);
+}
+
+static void shmob_drm_crtc_start_stop(struct shmob_drm_crtc *scrtc, bool start)
+{
+	struct shmob_drm_device *sdev = scrtc->crtc.dev->dev_private;
+	u32 value;
+
+	value = lcdc_read(sdev, LDCNT2R);
+	if (start)
+		lcdc_write(sdev, LDCNT2R, value | LDCNT2R_DO);
+	else
+		lcdc_write(sdev, LDCNT2R, value & ~LDCNT2R_DO);
+
+	/* Wait until power is applied/stopped. */
+	while (1) {
+		value = lcdc_read(sdev, LDPMR) & LDPMR_LPS;
+		if ((start && value) || (!start && !value))
+			break;
+
+		cpu_relax();
+	}
+
+	if (!start) {
+		/* Stop the dot clock. */
+		lcdc_write(sdev, LDDCKSTPR, LDDCKSTPR_DCKSTP);
+	}
+}
+
+/*
+ * shmob_drm_crtc_start - Configure and start the LCDC
+ * @scrtc: the SH Mobile CRTC
+ *
+ * Configure and start the LCDC device. External devices (clocks, MERAM, panels,
+ * ...) are not touched by this function.
+ */
+static void shmob_drm_crtc_start(struct shmob_drm_crtc *scrtc)
+{
+	struct drm_crtc *crtc = &scrtc->crtc;
+	struct shmob_drm_device *sdev = crtc->dev->dev_private;
+	const struct shmob_drm_interface_data *idata = &sdev->pdata->iface;
+	const struct shmob_drm_format_info *format;
+	struct drm_device *dev = sdev->ddev;
+	struct drm_plane *plane;
+	u32 value;
+
+	if (scrtc->started)
+		return;
+
+	format = shmob_drm_format_info(crtc->fb->pixel_format);
+	if (WARN_ON(format == NULL))
+		return;
+
+	/* Enable clocks before accessing the hardware. */
+	shmob_drm_clk_on(sdev);
+
+	/* Reset and enable the LCDC. */
+	lcdc_write(sdev, LDCNT2R, lcdc_read(sdev, LDCNT2R) | LDCNT2R_BR);
+	lcdc_wait_bit(sdev, LDCNT2R, LDCNT2R_BR, 0);
+	lcdc_write(sdev, LDCNT2R, LDCNT2R_ME);
+
+	/* Stop the LCDC first and disable all interrupts. */
+	shmob_drm_crtc_start_stop(scrtc, false);
+	lcdc_write(sdev, LDINTR, 0);
+
+	/* Configure power supply, dot clocks and start them. */
+	lcdc_write(sdev, LDPMR, 0);
+
+	value = sdev->lddckr;
+	if (idata->clk_div) {
+		/* FIXME: sh7724 can only use 42, 48, 54 and 60 for the divider
+		 * denominator.
+		 */
+		lcdc_write(sdev, LDDCKPAT1R, 0);
+		lcdc_write(sdev, LDDCKPAT2R, (1 << (idata->clk_div / 2)) - 1);
+
+		if (idata->clk_div == 1)
+			value |= LDDCKR_MOSEL;
+		else
+			value |= idata->clk_div;
+	}
+
+	lcdc_write(sdev, LDDCKR, value);
+	lcdc_write(sdev, LDDCKSTPR, 0);
+	lcdc_wait_bit(sdev, LDDCKSTPR, ~0, 0);
+
+	/* TODO: Setup SYS panel */
+
+	/* Setup geometry, format, frame buffer memory and operation mode. */
+	shmob_drm_crtc_setup_geometry(scrtc);
+
+	/* TODO: Handle YUV colorspaces. Hardcode REC709 for now. */
+	lcdc_write(sdev, LDDFR, format->lddfr | LDDFR_CF1);
+	lcdc_write(sdev, LDMLSR, scrtc->line_size);
+	lcdc_write(sdev, LDSA1R, scrtc->dma[0]);
+	if (format->yuv)
+		lcdc_write(sdev, LDSA2R, scrtc->dma[1]);
+	lcdc_write(sdev, LDSM1R, 0);
+
+	/* Word and long word swap. */
+	switch (format->fourcc) {
+	case DRM_FORMAT_RGB565:
+	case DRM_FORMAT_NV21:
+	case DRM_FORMAT_NV61:
+	case DRM_FORMAT_NV42:
+		value = LDDDSR_LS | LDDDSR_WS;
+		break;
+	case DRM_FORMAT_RGB888:
+	case DRM_FORMAT_NV12:
+	case DRM_FORMAT_NV16:
+	case DRM_FORMAT_NV24:
+		value = LDDDSR_LS | LDDDSR_WS | LDDDSR_BS;
+		break;
+	case DRM_FORMAT_ARGB8888:
+	default:
+		value = LDDDSR_LS;
+		break;
+	}
+	lcdc_write(sdev, LDDDSR, value);
+
+	/* Setup planes. */
+	list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
+		if (plane->crtc == crtc)
+			shmob_drm_plane_setup(plane);
+	}
+
+	/* Enable the display output. */
+	lcdc_write(sdev, LDCNT1R, LDCNT1R_DE);
+
+	shmob_drm_crtc_start_stop(scrtc, true);
+
+	scrtc->started = true;
+}
+
+static void shmob_drm_crtc_stop(struct shmob_drm_crtc *scrtc)
+{
+	struct drm_crtc *crtc = &scrtc->crtc;
+	struct shmob_drm_device *sdev = crtc->dev->dev_private;
+
+	if (!scrtc->started)
+		return;
+
+	/* Disable the MERAM cache. */
+	if (scrtc->cache) {
+		sh_mobile_meram_cache_free(sdev->meram, scrtc->cache);
+		scrtc->cache = NULL;
+	}
+
+	/* Stop the LCDC. */
+	shmob_drm_crtc_start_stop(scrtc, false);
+
+	/* Disable the display output. */
+	lcdc_write(sdev, LDCNT1R, 0);
+
+	/* Stop clocks. */
+	shmob_drm_clk_off(sdev);
+
+	scrtc->started = false;
+}
+
+void shmob_drm_crtc_suspend(struct shmob_drm_crtc *scrtc)
+{
+	shmob_drm_crtc_stop(scrtc);
+}
+
+void shmob_drm_crtc_resume(struct shmob_drm_crtc *scrtc)
+{
+	if (scrtc->dpms != DRM_MODE_DPMS_ON)
+		return;
+
+	shmob_drm_crtc_start(scrtc);
+}
+
+static void shmob_drm_crtc_compute_base(struct shmob_drm_crtc *scrtc,
+					int x, int y)
+{
+	struct drm_crtc *crtc = &scrtc->crtc;
+	struct drm_framebuffer *fb = crtc->fb;
+	struct shmob_drm_device *sdev = crtc->dev->dev_private;
+	struct drm_gem_cma_object *gem;
+	unsigned int bpp;
+
+	bpp = scrtc->format->yuv ? 8 : scrtc->format->bpp;
+	gem = drm_fb_cma_get_gem_obj(fb, 0);
+	scrtc->dma[0] = gem->paddr + fb->offsets[0]
+		      + y * fb->pitches[0] + x * bpp / 8;
+
+	if (scrtc->format->yuv) {
+		bpp = scrtc->format->bpp - 8;
+		gem = drm_fb_cma_get_gem_obj(fb, 1);
+		scrtc->dma[1] = gem->paddr + fb->offsets[1]
+			      + y / (bpp == 4 ? 2 : 1) * fb->pitches[1]
+			      + x * (bpp == 16 ? 2 : 1);
+	}
+
+	if (scrtc->cache)
+		sh_mobile_meram_cache_update(sdev->meram, scrtc->cache,
+					     scrtc->dma[0], scrtc->dma[1],
+					     &scrtc->dma[0], &scrtc->dma[1]);
+}
+
+static void shmob_drm_crtc_update_base(struct shmob_drm_crtc *scrtc)
+{
+	struct drm_crtc *crtc = &scrtc->crtc;
+	struct shmob_drm_device *sdev = crtc->dev->dev_private;
+
+	shmob_drm_crtc_compute_base(scrtc, crtc->x, crtc->y);
+
+	lcdc_write_mirror(sdev, LDSA1R, scrtc->dma[0]);
+	if (scrtc->format->yuv)
+		lcdc_write_mirror(sdev, LDSA2R, scrtc->dma[1]);
+
+	lcdc_write(sdev, LDRCNTR, lcdc_read(sdev, LDRCNTR) ^ LDRCNTR_MRS);
+}
+
+#define to_shmob_crtc(c)	container_of(c, struct shmob_drm_crtc, crtc)
+
+static void shmob_drm_crtc_dpms(struct drm_crtc *crtc, int mode)
+{
+	struct shmob_drm_crtc *scrtc = to_shmob_crtc(crtc);
+
+	if (scrtc->dpms == mode)
+		return;
+
+	if (mode == DRM_MODE_DPMS_ON)
+		shmob_drm_crtc_start(scrtc);
+	else
+		shmob_drm_crtc_stop(scrtc);
+
+	scrtc->dpms = mode;
+}
+
+static bool shmob_drm_crtc_mode_fixup(struct drm_crtc *crtc,
+				      const struct drm_display_mode *mode,
+				      struct drm_display_mode *adjusted_mode)
+{
+	return true;
+}
+
+static void shmob_drm_crtc_mode_prepare(struct drm_crtc *crtc)
+{
+	shmob_drm_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
+}
+
+static int shmob_drm_crtc_mode_set(struct drm_crtc *crtc,
+				   struct drm_display_mode *mode,
+				   struct drm_display_mode *adjusted_mode,
+				   int x, int y,
+				   struct drm_framebuffer *old_fb)
+{
+	struct shmob_drm_crtc *scrtc = to_shmob_crtc(crtc);
+	struct shmob_drm_device *sdev = crtc->dev->dev_private;
+	const struct sh_mobile_meram_cfg *mdata = sdev->pdata->meram;
+	const struct shmob_drm_format_info *format;
+	void *cache;
+
+	format = shmob_drm_format_info(crtc->fb->pixel_format);
+	if (format == NULL) {
+		dev_dbg(sdev->dev, "mode_set: unsupported format %08x\n",
+			crtc->fb->pixel_format);
+		return -EINVAL;
+	}
+
+	scrtc->format = format;
+	scrtc->line_size = crtc->fb->pitches[0];
+
+	if (sdev->meram) {
+		/* Enable MERAM cache if configured. We need to de-init
+		 * configured ICBs before we can re-initialize them.
+		 */
+		if (scrtc->cache) {
+			sh_mobile_meram_cache_free(sdev->meram, scrtc->cache);
+			scrtc->cache = NULL;
+		}
+
+		cache = sh_mobile_meram_cache_alloc(sdev->meram, mdata,
+						    crtc->fb->pitches[0],
+						    adjusted_mode->vdisplay,
+						    format->meram,
+						    &scrtc->line_size);
+		if (!IS_ERR(cache))
+			scrtc->cache = cache;
+	}
+
+	shmob_drm_crtc_compute_base(scrtc, x, y);
+
+	return 0;
+}
+
+static void shmob_drm_crtc_mode_commit(struct drm_crtc *crtc)
+{
+	shmob_drm_crtc_dpms(crtc, DRM_MODE_DPMS_ON);
+}
+
+static int shmob_drm_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
+					struct drm_framebuffer *old_fb)
+{
+	shmob_drm_crtc_update_base(to_shmob_crtc(crtc));
+
+	return 0;
+}
+
+static const struct drm_crtc_helper_funcs crtc_helper_funcs = {
+	.dpms = shmob_drm_crtc_dpms,
+	.mode_fixup = shmob_drm_crtc_mode_fixup,
+	.prepare = shmob_drm_crtc_mode_prepare,
+	.commit = shmob_drm_crtc_mode_commit,
+	.mode_set = shmob_drm_crtc_mode_set,
+	.mode_set_base = shmob_drm_crtc_mode_set_base,
+};
+
+void shmob_drm_crtc_cancel_page_flip(struct shmob_drm_crtc *scrtc,
+				     struct drm_file *file)
+{
+	struct drm_pending_vblank_event *event;
+	struct drm_device *dev = scrtc->crtc.dev;
+	unsigned long flags;
+
+	/* Destroy the pending vertical blanking event associated with the
+	 * pending page flip, if any, and disable vertical blanking interrupts.
+	 */
+	spin_lock_irqsave(&dev->event_lock, flags);
+	event = scrtc->event;
+	if (event && event->base.file_priv == file) {
+		scrtc->event = NULL;
+		event->base.destroy(&event->base);
+		drm_vblank_put(dev, 0);
+	}
+	spin_unlock_irqrestore(&dev->event_lock, flags);
+}
+
+void shmob_drm_crtc_finish_page_flip(struct shmob_drm_crtc *scrtc)
+{
+	struct drm_pending_vblank_event *event;
+	struct drm_device *dev = scrtc->crtc.dev;
+	struct timeval vblanktime;
+	unsigned long flags;
+
+	spin_lock_irqsave(&dev->event_lock, flags);
+	event = scrtc->event;
+	scrtc->event = NULL;
+	spin_unlock_irqrestore(&dev->event_lock, flags);
+
+	if (event == NULL)
+		return;
+
+	event->event.sequence = drm_vblank_count_and_time(dev, 0, &vblanktime);
+	event->event.tv_sec = vblanktime.tv_sec;
+	event->event.tv_usec = vblanktime.tv_usec;
+
+	spin_lock_irqsave(&dev->event_lock, flags);
+	list_add_tail(&event->base.link, &event->base.file_priv->event_list);
+	wake_up_interruptible(&event->base.file_priv->event_wait);
+	spin_unlock_irqrestore(&dev->event_lock, flags);
+
+	drm_vblank_put(dev, 0);
+}
+
+static int shmob_drm_crtc_page_flip(struct drm_crtc *crtc,
+				    struct drm_framebuffer *fb,
+				    struct drm_pending_vblank_event *event)
+{
+	struct shmob_drm_crtc *scrtc = to_shmob_crtc(crtc);
+	struct drm_device *dev = scrtc->crtc.dev;
+	unsigned long flags;
+
+	spin_lock_irqsave(&dev->event_lock, flags);
+	if (scrtc->event != NULL) {
+		spin_unlock_irqrestore(&dev->event_lock, flags);
+		return -EBUSY;
+	}
+	spin_unlock_irqrestore(&dev->event_lock, flags);
+
+	crtc->fb = fb;
+	shmob_drm_crtc_update_base(scrtc);
+
+	if (event) {
+		event->pipe = 0;
+		spin_lock_irqsave(&dev->event_lock, flags);
+		scrtc->event = event;
+		spin_unlock_irqrestore(&dev->event_lock, flags);
+		drm_vblank_get(dev, 0);
+	}
+
+	return 0;
+}
+
+static const struct drm_crtc_funcs crtc_funcs = {
+	.destroy = drm_crtc_cleanup,
+	.set_config = drm_crtc_helper_set_config,
+	.page_flip = shmob_drm_crtc_page_flip,
+};
+
+int shmob_drm_crtc_create(struct shmob_drm_device *sdev)
+{
+	struct drm_crtc *crtc = &sdev->crtc.crtc;
+	int ret;
+
+	sdev->crtc.dpms = DRM_MODE_DPMS_OFF;
+
+	ret = drm_crtc_init(sdev->ddev, crtc, &crtc_funcs);
+	if (ret < 0)
+		return ret;
+
+	drm_crtc_helper_add(crtc, &crtc_helper_funcs);
+
+	return 0;
+}
+
+/* -----------------------------------------------------------------------------
+ * Encoder
+ */
+
+#define to_shmob_encoder(e) \
+	container_of(e, struct shmob_drm_encoder, encoder)
+
+static void shmob_drm_encoder_dpms(struct drm_encoder *encoder, int mode)
+{
+	struct shmob_drm_encoder *senc = to_shmob_encoder(encoder);
+	struct shmob_drm_device *sdev = encoder->dev->dev_private;
+	struct shmob_drm_connector *scon = &sdev->connector;
+
+	if (senc->dpms == mode)
+		return;
+
+	shmob_drm_backlight_dpms(scon, mode);
+
+	senc->dpms = mode;
+}
+
+static bool shmob_drm_encoder_mode_fixup(struct drm_encoder *encoder,
+					 const struct drm_display_mode *mode,
+					 struct drm_display_mode *adjusted_mode)
+{
+	struct drm_device *dev = encoder->dev;
+	struct shmob_drm_device *sdev = dev->dev_private;
+	struct drm_connector *connector = &sdev->connector.connector;
+	const struct drm_display_mode *panel_mode;
+
+	if (list_empty(&connector->modes)) {
+		dev_dbg(dev->dev, "mode_fixup: empty modes list\n");
+		return false;
+	}
+
+	/* The flat panel mode is fixed, just copy it to the adjusted mode. */
+	panel_mode = list_first_entry(&connector->modes,
+				      struct drm_display_mode, head);
+	drm_mode_copy(adjusted_mode, panel_mode);
+
+	return true;
+}
+
+static void shmob_drm_encoder_mode_prepare(struct drm_encoder *encoder)
+{
+	/* No-op, everything is handled in the CRTC code. */
+}
+
+static void shmob_drm_encoder_mode_set(struct drm_encoder *encoder,
+				       struct drm_display_mode *mode,
+				       struct drm_display_mode *adjusted_mode)
+{
+	/* No-op, everything is handled in the CRTC code. */
+}
+
+static void shmob_drm_encoder_mode_commit(struct drm_encoder *encoder)
+{
+	/* No-op, everything is handled in the CRTC code. */
+}
+
+static const struct drm_encoder_helper_funcs encoder_helper_funcs = {
+	.dpms = shmob_drm_encoder_dpms,
+	.mode_fixup = shmob_drm_encoder_mode_fixup,
+	.prepare = shmob_drm_encoder_mode_prepare,
+	.commit = shmob_drm_encoder_mode_commit,
+	.mode_set = shmob_drm_encoder_mode_set,
+};
+
+static void shmob_drm_encoder_destroy(struct drm_encoder *encoder)
+{
+	drm_encoder_cleanup(encoder);
+}
+
+static const struct drm_encoder_funcs encoder_funcs = {
+	.destroy = shmob_drm_encoder_destroy,
+};
+
+int shmob_drm_encoder_create(struct shmob_drm_device *sdev)
+{
+	struct drm_encoder *encoder = &sdev->encoder.encoder;
+	int ret;
+
+	sdev->encoder.dpms = DRM_MODE_DPMS_OFF;
+
+	encoder->possible_crtcs = 1;
+
+	ret = drm_encoder_init(sdev->ddev, encoder, &encoder_funcs,
+			       DRM_MODE_ENCODER_LVDS);
+	if (ret < 0)
+		return ret;
+
+	drm_encoder_helper_add(encoder, &encoder_helper_funcs);
+
+	return 0;
+}
+
+void shmob_drm_crtc_enable_vblank(struct shmob_drm_device *sdev, bool enable)
+{
+	unsigned long flags;
+	u32 ldintr;
+
+	/* Be careful not to acknowledge any pending interrupt. */
+	spin_lock_irqsave(&sdev->irq_lock, flags);
+	ldintr = lcdc_read(sdev, LDINTR) | LDINTR_STATUS_MASK;
+	if (enable)
+		ldintr |= LDINTR_VEE;
+	else
+		ldintr &= ~LDINTR_VEE;
+	lcdc_write(sdev, LDINTR, ldintr);
+	spin_unlock_irqrestore(&sdev->irq_lock, flags);
+}
+
+/* -----------------------------------------------------------------------------
+ * Connector
+ */
+
+#define to_shmob_connector(c) \
+	container_of(c, struct shmob_drm_connector, connector)
+
+static int shmob_drm_connector_get_modes(struct drm_connector *connector)
+{
+	struct shmob_drm_device *sdev = connector->dev->dev_private;
+	struct drm_display_mode *mode;
+
+	mode = drm_mode_create(connector->dev);
+	if (mode == NULL)
+		return 0;
+
+	mode->type = DRM_MODE_TYPE_PREFERRED | DRM_MODE_TYPE_DRIVER;
+	mode->clock = sdev->pdata->panel.mode.clock;
+	mode->hdisplay = sdev->pdata->panel.mode.hdisplay;
+	mode->hsync_start = sdev->pdata->panel.mode.hsync_start;
+	mode->hsync_end = sdev->pdata->panel.mode.hsync_end;
+	mode->htotal = sdev->pdata->panel.mode.htotal;
+	mode->vdisplay = sdev->pdata->panel.mode.vdisplay;
+	mode->vsync_start = sdev->pdata->panel.mode.vsync_start;
+	mode->vsync_end = sdev->pdata->panel.mode.vsync_end;
+	mode->vtotal = sdev->pdata->panel.mode.vtotal;
+	mode->flags = sdev->pdata->panel.mode.flags;
+
+	drm_mode_set_name(mode);
+	drm_mode_probed_add(connector, mode);
+
+	connector->display_info.width_mm = sdev->pdata->panel.width_mm;
+	connector->display_info.height_mm = sdev->pdata->panel.height_mm;
+
+	return 1;
+}
+
+static int shmob_drm_connector_mode_valid(struct drm_connector *connector,
+					  struct drm_display_mode *mode)
+{
+	return MODE_OK;
+}
+
+static struct drm_encoder *
+shmob_drm_connector_best_encoder(struct drm_connector *connector)
+{
+	struct shmob_drm_connector *scon = to_shmob_connector(connector);
+
+	return scon->encoder;
+}
+
+static const struct drm_connector_helper_funcs connector_helper_funcs = {
+	.get_modes = shmob_drm_connector_get_modes,
+	.mode_valid = shmob_drm_connector_mode_valid,
+	.best_encoder = shmob_drm_connector_best_encoder,
+};
+
+static void shmob_drm_connector_destroy(struct drm_connector *connector)
+{
+	struct shmob_drm_connector *scon = to_shmob_connector(connector);
+
+	shmob_drm_backlight_exit(scon);
+	drm_sysfs_connector_remove(connector);
+	drm_connector_cleanup(connector);
+}
+
+static enum drm_connector_status
+shmob_drm_connector_detect(struct drm_connector *connector, bool force)
+{
+	return connector_status_connected;
+}
+
+static const struct drm_connector_funcs connector_funcs = {
+	.dpms = drm_helper_connector_dpms,
+	.detect = shmob_drm_connector_detect,
+	.fill_modes = drm_helper_probe_single_connector_modes,
+	.destroy = shmob_drm_connector_destroy,
+};
+
+int shmob_drm_connector_create(struct shmob_drm_device *sdev,
+			       struct drm_encoder *encoder)
+{
+	struct drm_connector *connector = &sdev->connector.connector;
+	int ret;
+
+	sdev->connector.encoder = encoder;
+
+	connector->display_info.width_mm = sdev->pdata->panel.width_mm;
+	connector->display_info.height_mm = sdev->pdata->panel.height_mm;
+
+	ret = drm_connector_init(sdev->ddev, connector, &connector_funcs,
+				 DRM_MODE_CONNECTOR_LVDS);
+	if (ret < 0)
+		return ret;
+
+	drm_connector_helper_add(connector, &connector_helper_funcs);
+	ret = drm_sysfs_connector_add(connector);
+	if (ret < 0)
+		goto err_cleanup;
+
+	ret = shmob_drm_backlight_init(&sdev->connector);
+	if (ret < 0)
+		goto err_sysfs;
+
+	ret = drm_mode_connector_attach_encoder(connector, encoder);
+	if (ret < 0)
+		goto err_backlight;
+
+	connector->encoder = encoder;
+
+	drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
+	drm_connector_property_set_value(connector,
+		sdev->ddev->mode_config.dpms_property, DRM_MODE_DPMS_OFF);
+
+	return 0;
+
+err_backlight:
+	shmob_drm_backlight_exit(&sdev->connector);
+err_sysfs:
+	drm_sysfs_connector_remove(connector);
+err_cleanup:
+	drm_connector_cleanup(connector);
+	return ret;
+}
diff --git a/drivers/gpu/drm/shmobile/shmob_drm_crtc.h b/drivers/gpu/drm/shmobile/shmob_drm_crtc.h
new file mode 100644
index 00000000000..e5bd109c4c3
--- /dev/null
+++ b/drivers/gpu/drm/shmobile/shmob_drm_crtc.h
@@ -0,0 +1,60 @@
+/*
+ * shmob_drm_crtc.h  --  SH Mobile DRM CRTCs
+ *
+ * Copyright (C) 2012 Renesas Corporation
+ *
+ * Laurent Pinchart (laurent.pinchart@ideasonboard.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef __SHMOB_DRM_CRTC_H__
+#define __SHMOB_DRM_CRTC_H__
+
+#include <drm/drmP.h>
+#include <drm/drm_crtc.h>
+
+struct backlight_device;
+struct shmob_drm_device;
+
+struct shmob_drm_crtc {
+	struct drm_crtc crtc;
+
+	struct drm_pending_vblank_event *event;
+	int dpms;
+
+	const struct shmob_drm_format_info *format;
+	void *cache;
+	unsigned long dma[2];
+	unsigned int line_size;
+	bool started;
+};
+
+struct shmob_drm_encoder {
+	struct drm_encoder encoder;
+	int dpms;
+};
+
+struct shmob_drm_connector {
+	struct drm_connector connector;
+	struct drm_encoder *encoder;
+
+	struct backlight_device *backlight;
+};
+
+int shmob_drm_crtc_create(struct shmob_drm_device *sdev);
+void shmob_drm_crtc_enable_vblank(struct shmob_drm_device *sdev, bool enable);
+void shmob_drm_crtc_cancel_page_flip(struct shmob_drm_crtc *scrtc,
+				     struct drm_file *file);
+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,
+			       struct drm_encoder *encoder);
+
+#endif /* __SHMOB_DRM_CRTC_H__ */
diff --git a/drivers/gpu/drm/shmobile/shmob_drm_drv.c b/drivers/gpu/drm/shmobile/shmob_drm_drv.c
new file mode 100644
index 00000000000..c71d493fd0c
--- /dev/null
+++ b/drivers/gpu/drm/shmobile/shmob_drm_drv.c
@@ -0,0 +1,361 @@
+/*
+ * shmob_drm_drv.c  --  SH Mobile DRM driver
+ *
+ * Copyright (C) 2012 Renesas Corporation
+ *
+ * Laurent Pinchart (laurent.pinchart@ideasonboard.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/clk.h>
+#include <linux/io.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/pm.h>
+#include <linux/slab.h>
+
+#include <drm/drmP.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_gem_cma_helper.h>
+
+#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"
+
+/* -----------------------------------------------------------------------------
+ * Hardware initialization
+ */
+
+static int __devinit 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 __devinit shmob_drm_setup_clocks(struct shmob_drm_device *sdev,
+					    enum shmob_drm_clk_source clksrc)
+{
+	struct clk *clk;
+	char *clkname;
+
+	switch (clksrc) {
+	case SHMOB_DRM_CLK_BUS:
+		clkname = "bus_clk";
+		sdev->lddckr = LDDCKR_ICKSEL_BUS;
+		break;
+	case SHMOB_DRM_CLK_PERIPHERAL:
+		clkname = "peripheral_clk";
+		sdev->lddckr = LDDCKR_ICKSEL_MIPI;
+		break;
+	case SHMOB_DRM_CLK_EXTERNAL:
+		clkname = NULL;
+		sdev->lddckr = LDDCKR_ICKSEL_HDMI;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	clk = clk_get(sdev->dev, clkname);
+	if (IS_ERR(clk)) {
+		dev_err(sdev->dev, "cannot get dot clock %s\n", clkname);
+		return PTR_ERR(clk);
+	}
+
+	sdev->clock = clk;
+	return 0;
+}
+
+/* -----------------------------------------------------------------------------
+ * DRM operations
+ */
+
+static int shmob_drm_unload(struct drm_device *dev)
+{
+	struct shmob_drm_device *sdev = dev->dev_private;
+
+	drm_kms_helper_poll_fini(dev);
+	drm_mode_config_cleanup(dev);
+	drm_vblank_cleanup(dev);
+	drm_irq_uninstall(dev);
+
+	if (sdev->clock)
+		clk_put(sdev->clock);
+
+	if (sdev->mmio)
+		iounmap(sdev->mmio);
+
+	dev->dev_private = NULL;
+	kfree(sdev);
+
+	return 0;
+}
+
+static int shmob_drm_load(struct drm_device *dev, unsigned long flags)
+{
+	struct shmob_drm_platform_data *pdata = dev->dev->platform_data;
+	struct platform_device *pdev = dev->platformdev;
+	struct shmob_drm_device *sdev;
+	struct resource *res;
+	unsigned int i;
+	int ret;
+
+	if (pdata == NULL) {
+		dev_err(dev->dev, "no platform data\n");
+		return -EINVAL;
+	}
+
+	sdev = kzalloc(sizeof(*sdev), GFP_KERNEL);
+	if (sdev == NULL) {
+		dev_err(dev->dev, "failed to allocate private data\n");
+		return -ENOMEM;
+	}
+
+	sdev->dev = &pdev->dev;
+	sdev->pdata = pdata;
+	spin_lock_init(&sdev->irq_lock);
+
+	sdev->ddev = dev;
+	dev->dev_private = sdev;
+
+	/* I/O resources and clocks */
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (res == NULL) {
+		dev_err(&pdev->dev, "failed to get memory resource\n");
+		ret = -EINVAL;
+		goto done;
+	}
+
+	sdev->mmio = ioremap_nocache(res->start, resource_size(res));
+	if (sdev->mmio == NULL) {
+		dev_err(&pdev->dev, "failed to remap memory resource\n");
+		ret = -ENOMEM;
+		goto done;
+	}
+
+	ret = shmob_drm_setup_clocks(sdev, pdata->clk_source);
+	if (ret < 0)
+		goto done;
+
+	ret = shmob_drm_init_interface(sdev);
+	if (ret < 0)
+		goto done;
+
+	ret = shmob_drm_modeset_init(sdev);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "failed to initialize mode setting\n");
+		goto done;
+	}
+
+	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 done;
+		}
+	}
+
+	ret = drm_vblank_init(dev, 1);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "failed to initialize vblank\n");
+		goto done;
+	}
+
+	ret = drm_irq_install(dev);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "failed to install IRQ handler\n");
+		goto done;
+	}
+
+done:
+	if (ret)
+		shmob_drm_unload(dev);
+
+	return ret;
+}
+
+static void shmob_drm_preclose(struct drm_device *dev, struct drm_file *file)
+{
+	struct shmob_drm_device *sdev = dev->dev_private;
+
+	shmob_drm_crtc_cancel_page_flip(&sdev->crtc, file);
+}
+
+static irqreturn_t shmob_drm_irq(int irq, void *arg)
+{
+	struct drm_device *dev = arg;
+	struct shmob_drm_device *sdev = dev->dev_private;
+	unsigned long flags;
+	u32 status;
+
+	/* Acknowledge interrupts. Putting interrupt enable and interrupt flag
+	 * bits in the same register is really brain-dead design and requires
+	 * taking a spinlock.
+	 */
+	spin_lock_irqsave(&sdev->irq_lock, flags);
+	status = lcdc_read(sdev, LDINTR);
+	lcdc_write(sdev, LDINTR, status ^ LDINTR_STATUS_MASK);
+	spin_unlock_irqrestore(&sdev->irq_lock, flags);
+
+	if (status & LDINTR_VES) {
+		drm_handle_vblank(dev, 0);
+		shmob_drm_crtc_finish_page_flip(&sdev->crtc);
+	}
+
+	return IRQ_HANDLED;
+}
+
+static int shmob_drm_enable_vblank(struct drm_device *dev, int crtc)
+{
+	struct shmob_drm_device *sdev = dev->dev_private;
+
+	shmob_drm_crtc_enable_vblank(sdev, true);
+
+	return 0;
+}
+
+static void shmob_drm_disable_vblank(struct drm_device *dev, int crtc)
+{
+	struct shmob_drm_device *sdev = dev->dev_private;
+
+	shmob_drm_crtc_enable_vblank(sdev, false);
+}
+
+static const struct file_operations shmob_drm_fops = {
+	.owner		= THIS_MODULE,
+	.open		= drm_open,
+	.release	= drm_release,
+	.unlocked_ioctl	= drm_ioctl,
+#ifdef CONFIG_COMPAT
+	.compat_ioctl	= drm_compat_ioctl,
+#endif
+	.poll		= drm_poll,
+	.read		= drm_read,
+	.fasync		= drm_fasync,
+	.llseek		= no_llseek,
+	.mmap		= drm_gem_cma_mmap,
+};
+
+static struct drm_driver shmob_drm_driver = {
+	.driver_features	= DRIVER_HAVE_IRQ | DRIVER_GEM | DRIVER_MODESET,
+	.load			= shmob_drm_load,
+	.unload			= shmob_drm_unload,
+	.preclose		= shmob_drm_preclose,
+	.irq_handler		= shmob_drm_irq,
+	.get_vblank_counter	= drm_vblank_count,
+	.enable_vblank		= shmob_drm_enable_vblank,
+	.disable_vblank		= shmob_drm_disable_vblank,
+	.gem_free_object	= drm_gem_cma_free_object,
+	.gem_vm_ops		= &drm_gem_cma_vm_ops,
+	.dumb_create		= drm_gem_cma_dumb_create,
+	.dumb_map_offset	= drm_gem_cma_dumb_map_offset,
+	.dumb_destroy		= drm_gem_cma_dumb_destroy,
+	.fops			= &shmob_drm_fops,
+	.name			= "shmob-drm",
+	.desc			= "Renesas SH Mobile DRM",
+	.date			= "20120424",
+	.major			= 1,
+	.minor			= 0,
+};
+
+/* -----------------------------------------------------------------------------
+ * Power management
+ */
+
+#if CONFIG_PM_SLEEP
+static int shmob_drm_pm_suspend(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct drm_device *ddev = platform_get_drvdata(pdev);
+	struct shmob_drm_device *sdev = ddev->dev_private;
+
+	drm_kms_helper_poll_disable(ddev);
+	shmob_drm_crtc_suspend(&sdev->crtc);
+
+	return 0;
+}
+
+static int shmob_drm_pm_resume(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct drm_device *ddev = platform_get_drvdata(pdev);
+	struct shmob_drm_device *sdev = ddev->dev_private;
+
+	mutex_lock(&sdev->ddev->mode_config.mutex);
+	shmob_drm_crtc_resume(&sdev->crtc);
+	mutex_unlock(&sdev->ddev->mode_config.mutex);
+
+	drm_kms_helper_poll_enable(sdev->ddev);
+	return 0;
+}
+#endif
+
+static const struct dev_pm_ops shmob_drm_pm_ops = {
+	SET_SYSTEM_SLEEP_PM_OPS(shmob_drm_pm_suspend, shmob_drm_pm_resume)
+};
+
+/* -----------------------------------------------------------------------------
+ * Platform driver
+ */
+
+static int __devinit shmob_drm_probe(struct platform_device *pdev)
+{
+	return drm_platform_init(&shmob_drm_driver, pdev);
+}
+
+static int __devexit shmob_drm_remove(struct platform_device *pdev)
+{
+	drm_platform_exit(&shmob_drm_driver, pdev);
+
+	return 0;
+}
+
+static struct platform_driver shmob_drm_platform_driver = {
+	.probe		= shmob_drm_probe,
+	.remove		= __devexit_p(shmob_drm_remove),
+	.driver		= {
+		.owner	= THIS_MODULE,
+		.name	= "shmob-drm",
+		.pm	= &shmob_drm_pm_ops,
+	},
+};
+
+module_platform_driver(shmob_drm_platform_driver);
+
+MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@ideasonboard.com>");
+MODULE_DESCRIPTION("Renesas SH Mobile DRM Driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/gpu/drm/shmobile/shmob_drm_drv.h b/drivers/gpu/drm/shmobile/shmob_drm_drv.h
new file mode 100644
index 00000000000..4d46b811b5a
--- /dev/null
+++ b/drivers/gpu/drm/shmobile/shmob_drm_drv.h
@@ -0,0 +1,47 @@
+/*
+ * shmob_drm.h  --  SH Mobile DRM driver
+ *
+ * Copyright (C) 2012 Renesas Corporation
+ *
+ * Laurent Pinchart (laurent.pinchart@ideasonboard.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef __SHMOB_DRM_DRV_H__
+#define __SHMOB_DRM_DRV_H__
+
+#include <linux/kernel.h>
+#include <linux/platform_data/shmob_drm.h>
+#include <linux/spinlock.h>
+
+#include "shmob_drm_crtc.h"
+
+struct clk;
+struct device;
+struct drm_device;
+struct sh_mobile_meram_info;
+
+struct shmob_drm_device {
+	struct device *dev;
+	const struct shmob_drm_platform_data *pdata;
+
+	void __iomem *mmio;
+	struct clk *clock;
+	struct sh_mobile_meram_info *meram;
+	u32 lddckr;
+	u32 ldmt1r;
+
+	spinlock_t irq_lock;		/* Protects hardware LDINTR register */
+
+	struct drm_device *ddev;
+
+	struct shmob_drm_crtc crtc;
+	struct shmob_drm_encoder encoder;
+	struct shmob_drm_connector connector;
+};
+
+#endif /* __SHMOB_DRM_DRV_H__ */
diff --git a/drivers/gpu/drm/shmobile/shmob_drm_kms.c b/drivers/gpu/drm/shmobile/shmob_drm_kms.c
new file mode 100644
index 00000000000..c291ee385b4
--- /dev/null
+++ b/drivers/gpu/drm/shmobile/shmob_drm_kms.c
@@ -0,0 +1,160 @@
+/*
+ * shmob_drm_kms.c  --  SH Mobile DRM Mode Setting
+ *
+ * Copyright (C) 2012 Renesas Corporation
+ *
+ * Laurent Pinchart (laurent.pinchart@ideasonboard.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <drm/drmP.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_fb_cma_helper.h>
+#include <drm/drm_gem_cma_helper.h>
+
+#include <video/sh_mobile_meram.h>
+
+#include "shmob_drm_crtc.h"
+#include "shmob_drm_drv.h"
+#include "shmob_drm_kms.h"
+#include "shmob_drm_regs.h"
+
+/* -----------------------------------------------------------------------------
+ * Format helpers
+ */
+
+static const struct shmob_drm_format_info shmob_drm_format_infos[] = {
+	{
+		.fourcc = DRM_FORMAT_RGB565,
+		.bpp = 16,
+		.yuv = false,
+		.lddfr = LDDFR_PKF_RGB16,
+		.meram = SH_MOBILE_MERAM_PF_RGB,
+	}, {
+		.fourcc = DRM_FORMAT_RGB888,
+		.bpp = 24,
+		.yuv = false,
+		.lddfr = LDDFR_PKF_RGB24,
+		.meram = SH_MOBILE_MERAM_PF_RGB,
+	}, {
+		.fourcc = DRM_FORMAT_ARGB8888,
+		.bpp = 32,
+		.yuv = false,
+		.lddfr = LDDFR_PKF_ARGB32,
+		.meram = SH_MOBILE_MERAM_PF_RGB,
+	}, {
+		.fourcc = DRM_FORMAT_NV12,
+		.bpp = 12,
+		.yuv = true,
+		.lddfr = LDDFR_CC | LDDFR_YF_420,
+		.meram = SH_MOBILE_MERAM_PF_NV,
+	}, {
+		.fourcc = DRM_FORMAT_NV21,
+		.bpp = 12,
+		.yuv = true,
+		.lddfr = LDDFR_CC | LDDFR_YF_420,
+		.meram = SH_MOBILE_MERAM_PF_NV,
+	}, {
+		.fourcc = DRM_FORMAT_NV16,
+		.bpp = 16,
+		.yuv = true,
+		.lddfr = LDDFR_CC | LDDFR_YF_422,
+		.meram = SH_MOBILE_MERAM_PF_NV,
+	}, {
+		.fourcc = DRM_FORMAT_NV61,
+		.bpp = 16,
+		.yuv = true,
+		.lddfr = LDDFR_CC | LDDFR_YF_422,
+		.meram = SH_MOBILE_MERAM_PF_NV,
+	}, {
+		.fourcc = DRM_FORMAT_NV24,
+		.bpp = 24,
+		.yuv = true,
+		.lddfr = LDDFR_CC | LDDFR_YF_444,
+		.meram = SH_MOBILE_MERAM_PF_NV24,
+	}, {
+		.fourcc = DRM_FORMAT_NV42,
+		.bpp = 24,
+		.yuv = true,
+		.lddfr = LDDFR_CC | LDDFR_YF_444,
+		.meram = SH_MOBILE_MERAM_PF_NV24,
+	},
+};
+
+const struct shmob_drm_format_info *shmob_drm_format_info(u32 fourcc)
+{
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(shmob_drm_format_infos); ++i) {
+		if (shmob_drm_format_infos[i].fourcc == fourcc)
+			return &shmob_drm_format_infos[i];
+	}
+
+	return NULL;
+}
+
+/* -----------------------------------------------------------------------------
+ * Frame buffer
+ */
+
+static struct drm_framebuffer *
+shmob_drm_fb_create(struct drm_device *dev, struct drm_file *file_priv,
+		    struct drm_mode_fb_cmd2 *mode_cmd)
+{
+	const struct shmob_drm_format_info *format;
+
+	format = shmob_drm_format_info(mode_cmd->pixel_format);
+	if (format == NULL) {
+		dev_dbg(dev->dev, "unsupported pixel format %08x\n",
+			mode_cmd->pixel_format);
+		return ERR_PTR(-EINVAL);
+	}
+
+	if (mode_cmd->pitches[0] & 7 || mode_cmd->pitches[0] >= 65536) {
+		dev_dbg(dev->dev, "valid pitch value %u\n",
+			mode_cmd->pitches[0]);
+		return ERR_PTR(-EINVAL);
+	}
+
+	if (format->yuv) {
+		unsigned int chroma_cpp = format->bpp == 24 ? 2 : 1;
+
+		if (mode_cmd->pitches[1] != mode_cmd->pitches[0] * chroma_cpp) {
+			dev_dbg(dev->dev,
+				"luma and chroma pitches do not match\n");
+			return ERR_PTR(-EINVAL);
+		}
+	}
+
+	return drm_fb_cma_create(dev, file_priv, mode_cmd);
+}
+
+static const struct drm_mode_config_funcs shmob_drm_mode_config_funcs = {
+	.fb_create = shmob_drm_fb_create,
+};
+
+int shmob_drm_modeset_init(struct shmob_drm_device *sdev)
+{
+	drm_mode_config_init(sdev->ddev);
+
+	shmob_drm_crtc_create(sdev);
+	shmob_drm_encoder_create(sdev);
+	shmob_drm_connector_create(sdev, &sdev->encoder.encoder);
+
+	drm_kms_helper_poll_init(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;
+
+	drm_helper_disable_unused_functions(sdev->ddev);
+
+	return 0;
+}
diff --git a/drivers/gpu/drm/shmobile/shmob_drm_kms.h b/drivers/gpu/drm/shmobile/shmob_drm_kms.h
new file mode 100644
index 00000000000..9495c911130
--- /dev/null
+++ b/drivers/gpu/drm/shmobile/shmob_drm_kms.h
@@ -0,0 +1,34 @@
+/*
+ * shmob_drm_kms.h  --  SH Mobile DRM Mode Setting
+ *
+ * Copyright (C) 2012 Renesas Corporation
+ *
+ * Laurent Pinchart (laurent.pinchart@ideasonboard.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef __SHMOB_DRM_KMS_H__
+#define __SHMOB_DRM_KMS_H__
+
+#include <linux/types.h>
+
+struct drm_gem_cma_object;
+struct shmob_drm_device;
+
+struct shmob_drm_format_info {
+	u32 fourcc;
+	unsigned int bpp;
+	bool yuv;
+	u32 lddfr;
+	unsigned int meram;
+};
+
+const struct shmob_drm_format_info *shmob_drm_format_info(u32 fourcc);
+
+int shmob_drm_modeset_init(struct shmob_drm_device *sdev);
+
+#endif /* __SHMOB_DRM_KMS_H__ */
diff --git a/drivers/gpu/drm/shmobile/shmob_drm_plane.c b/drivers/gpu/drm/shmobile/shmob_drm_plane.c
new file mode 100644
index 00000000000..e1eb899b028
--- /dev/null
+++ b/drivers/gpu/drm/shmobile/shmob_drm_plane.c
@@ -0,0 +1,268 @@
+/*
+ * shmob_drm_plane.c  --  SH Mobile DRM Planes
+ *
+ * Copyright (C) 2012 Renesas Corporation
+ *
+ * Laurent Pinchart (laurent.pinchart@ideasonboard.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <drm/drmP.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_fb_cma_helper.h>
+#include <drm/drm_gem_cma_helper.h>
+
+#include <video/sh_mobile_meram.h>
+
+#include "shmob_drm_drv.h"
+#include "shmob_drm_kms.h"
+#include "shmob_drm_plane.h"
+#include "shmob_drm_regs.h"
+
+struct shmob_drm_plane {
+	struct drm_plane plane;
+	unsigned int index;
+	unsigned int alpha;
+
+	const struct shmob_drm_format_info *format;
+	unsigned long dma[2];
+
+	unsigned int src_x;
+	unsigned int src_y;
+	unsigned int crtc_x;
+	unsigned int crtc_y;
+	unsigned int crtc_w;
+	unsigned int crtc_h;
+};
+
+#define to_shmob_plane(p)	container_of(p, struct shmob_drm_plane, plane)
+
+static void shmob_drm_plane_compute_base(struct shmob_drm_plane *splane,
+					 struct drm_framebuffer *fb,
+					 int x, int y)
+{
+	struct drm_gem_cma_object *gem;
+	unsigned int bpp;
+
+	bpp = splane->format->yuv ? 8 : splane->format->bpp;
+	gem = drm_fb_cma_get_gem_obj(fb, 0);
+	splane->dma[0] = gem->paddr + fb->offsets[0]
+		       + y * fb->pitches[0] + x * bpp / 8;
+
+	if (splane->format->yuv) {
+		bpp = splane->format->bpp - 8;
+		gem = drm_fb_cma_get_gem_obj(fb, 1);
+		splane->dma[1] = gem->paddr + fb->offsets[1]
+			       + y / (bpp == 4 ? 2 : 1) * fb->pitches[1]
+			       + x * (bpp == 16 ? 2 : 1);
+	}
+}
+
+static void __shmob_drm_plane_setup(struct shmob_drm_plane *splane,
+				    struct drm_framebuffer *fb)
+{
+	struct shmob_drm_device *sdev = splane->plane.dev->dev_private;
+	u32 format;
+
+	/* TODO: Support ROP3 mode */
+	format = LDBBSIFR_EN | (splane->alpha << LDBBSIFR_LAY_SHIFT);
+
+	switch (splane->format->fourcc) {
+	case DRM_FORMAT_RGB565:
+	case DRM_FORMAT_NV21:
+	case DRM_FORMAT_NV61:
+	case DRM_FORMAT_NV42:
+		format |= LDBBSIFR_SWPL | LDBBSIFR_SWPW;
+		break;
+	case DRM_FORMAT_RGB888:
+	case DRM_FORMAT_NV12:
+	case DRM_FORMAT_NV16:
+	case DRM_FORMAT_NV24:
+		format |= LDBBSIFR_SWPL | LDBBSIFR_SWPW | LDBBSIFR_SWPB;
+		break;
+	case DRM_FORMAT_ARGB8888:
+	default:
+		format |= LDBBSIFR_SWPL;
+		break;
+	}
+
+	switch (splane->format->fourcc) {
+	case DRM_FORMAT_RGB565:
+		format |= LDBBSIFR_AL_1 | LDBBSIFR_RY | LDBBSIFR_RPKF_RGB16;
+		break;
+	case DRM_FORMAT_RGB888:
+		format |= LDBBSIFR_AL_1 | LDBBSIFR_RY | LDBBSIFR_RPKF_RGB24;
+		break;
+	case DRM_FORMAT_ARGB8888:
+		format |= LDBBSIFR_AL_PK | LDBBSIFR_RY | LDDFR_PKF_ARGB32;
+		break;
+	case DRM_FORMAT_NV12:
+	case DRM_FORMAT_NV21:
+		format |= LDBBSIFR_AL_1 | LDBBSIFR_CHRR_420;
+		break;
+	case DRM_FORMAT_NV16:
+	case DRM_FORMAT_NV61:
+		format |= LDBBSIFR_AL_1 | LDBBSIFR_CHRR_422;
+		break;
+	case DRM_FORMAT_NV24:
+	case DRM_FORMAT_NV42:
+		format |= LDBBSIFR_AL_1 | LDBBSIFR_CHRR_444;
+		break;
+	}
+
+#define plane_reg_dump(sdev, splane, reg) \
+	dev_dbg(sdev->ddev->dev, "%s(%u): %s 0x%08x 0x%08x\n", __func__, \
+		splane->index, #reg, \
+		lcdc_read(sdev, reg(splane->index)), \
+		lcdc_read(sdev, reg(splane->index) + LCDC_SIDE_B_OFFSET))
+
+	plane_reg_dump(sdev, splane, LDBnBSIFR);
+	plane_reg_dump(sdev, splane, LDBnBSSZR);
+	plane_reg_dump(sdev, splane, LDBnBLOCR);
+	plane_reg_dump(sdev, splane, LDBnBSMWR);
+	plane_reg_dump(sdev, splane, LDBnBSAYR);
+	plane_reg_dump(sdev, splane, LDBnBSACR);
+
+	lcdc_write(sdev, LDBCR, LDBCR_UPC(splane->index));
+	dev_dbg(sdev->ddev->dev, "%s(%u): %s 0x%08x\n", __func__, splane->index,
+		"LDBCR", lcdc_read(sdev, LDBCR));
+
+	lcdc_write(sdev, LDBnBSIFR(splane->index), format);
+
+	lcdc_write(sdev, LDBnBSSZR(splane->index),
+		   (splane->crtc_h << LDBBSSZR_BVSS_SHIFT) |
+		   (splane->crtc_w << LDBBSSZR_BHSS_SHIFT));
+	lcdc_write(sdev, LDBnBLOCR(splane->index),
+		   (splane->crtc_y << LDBBLOCR_CVLC_SHIFT) |
+		   (splane->crtc_x << LDBBLOCR_CHLC_SHIFT));
+	lcdc_write(sdev, LDBnBSMWR(splane->index),
+		   fb->pitches[0] << LDBBSMWR_BSMW_SHIFT);
+
+	shmob_drm_plane_compute_base(splane, fb, splane->src_x, splane->src_y);
+
+	lcdc_write(sdev, LDBnBSAYR(splane->index), splane->dma[0]);
+	if (splane->format->yuv)
+		lcdc_write(sdev, LDBnBSACR(splane->index), splane->dma[1]);
+
+	lcdc_write(sdev, LDBCR,
+		   LDBCR_UPF(splane->index) | LDBCR_UPD(splane->index));
+	dev_dbg(sdev->ddev->dev, "%s(%u): %s 0x%08x\n", __func__, splane->index,
+		"LDBCR", lcdc_read(sdev, LDBCR));
+
+	plane_reg_dump(sdev, splane, LDBnBSIFR);
+	plane_reg_dump(sdev, splane, LDBnBSSZR);
+	plane_reg_dump(sdev, splane, LDBnBLOCR);
+	plane_reg_dump(sdev, splane, LDBnBSMWR);
+	plane_reg_dump(sdev, splane, LDBnBSAYR);
+	plane_reg_dump(sdev, splane, LDBnBSACR);
+}
+
+void shmob_drm_plane_setup(struct drm_plane *plane)
+{
+	struct shmob_drm_plane *splane = to_shmob_plane(plane);
+
+	if (plane->fb == NULL || !plane->enabled)
+		return;
+
+	__shmob_drm_plane_setup(splane, plane->fb);
+}
+
+static int
+shmob_drm_plane_update(struct drm_plane *plane, struct drm_crtc *crtc,
+		       struct drm_framebuffer *fb, int crtc_x, int crtc_y,
+		       unsigned int crtc_w, unsigned int crtc_h,
+		       uint32_t src_x, uint32_t src_y,
+		       uint32_t src_w, uint32_t src_h)
+{
+	struct shmob_drm_plane *splane = to_shmob_plane(plane);
+	struct shmob_drm_device *sdev = plane->dev->dev_private;
+	const struct shmob_drm_format_info *format;
+
+	format = shmob_drm_format_info(fb->pixel_format);
+	if (format == NULL) {
+		dev_dbg(sdev->dev, "update_plane: unsupported format %08x\n",
+			fb->pixel_format);
+		return -EINVAL;
+	}
+
+	if (src_w >> 16 != crtc_w || src_h >> 16 != crtc_h) {
+		dev_dbg(sdev->dev, "%s: scaling not supported\n", __func__);
+		return -EINVAL;
+	}
+
+	splane->format = format;
+
+	splane->src_x = src_x >> 16;
+	splane->src_y = src_y >> 16;
+	splane->crtc_x = crtc_x;
+	splane->crtc_y = crtc_y;
+	splane->crtc_w = crtc_w;
+	splane->crtc_h = crtc_h;
+
+	__shmob_drm_plane_setup(splane, fb);
+	return 0;
+}
+
+static int shmob_drm_plane_disable(struct drm_plane *plane)
+{
+	struct shmob_drm_plane *splane = to_shmob_plane(plane);
+	struct shmob_drm_device *sdev = plane->dev->dev_private;
+
+	splane->format = NULL;
+
+	lcdc_write(sdev, LDBnBSIFR(splane->index), 0);
+	return 0;
+}
+
+static void shmob_drm_plane_destroy(struct drm_plane *plane)
+{
+	struct shmob_drm_plane *splane = to_shmob_plane(plane);
+
+	shmob_drm_plane_disable(plane);
+	drm_plane_cleanup(plane);
+	kfree(splane);
+}
+
+static const struct drm_plane_funcs shmob_drm_plane_funcs = {
+	.update_plane = shmob_drm_plane_update,
+	.disable_plane = shmob_drm_plane_disable,
+	.destroy = shmob_drm_plane_destroy,
+};
+
+static const uint32_t formats[] = {
+	DRM_FORMAT_RGB565,
+	DRM_FORMAT_RGB888,
+	DRM_FORMAT_ARGB8888,
+	DRM_FORMAT_NV12,
+	DRM_FORMAT_NV21,
+	DRM_FORMAT_NV16,
+	DRM_FORMAT_NV61,
+	DRM_FORMAT_NV24,
+	DRM_FORMAT_NV42,
+};
+
+int shmob_drm_plane_create(struct shmob_drm_device *sdev, unsigned int index)
+{
+	struct shmob_drm_plane *splane;
+	int ret;
+
+	splane = kzalloc(sizeof(*splane), GFP_KERNEL);
+	if (splane == NULL)
+		return -ENOMEM;
+
+	splane->index = index;
+	splane->alpha = 255;
+
+	ret = drm_plane_init(sdev->ddev, &splane->plane, 1,
+			     &shmob_drm_plane_funcs, formats,
+			     ARRAY_SIZE(formats), false);
+	if (ret < 0)
+		kfree(splane);
+
+	return ret;
+}
diff --git a/drivers/gpu/drm/shmobile/shmob_drm_plane.h b/drivers/gpu/drm/shmobile/shmob_drm_plane.h
new file mode 100644
index 00000000000..99623d05e3b
--- /dev/null
+++ b/drivers/gpu/drm/shmobile/shmob_drm_plane.h
@@ -0,0 +1,22 @@
+/*
+ * shmob_drm_plane.h  --  SH Mobile DRM Planes
+ *
+ * Copyright (C) 2012 Renesas Corporation
+ *
+ * Laurent Pinchart (laurent.pinchart@ideasonboard.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef __SHMOB_DRM_PLANE_H__
+#define __SHMOB_DRM_PLANE_H__
+
+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);
+
+#endif /* __SHMOB_DRM_PLANE_H__ */
diff --git a/drivers/gpu/drm/shmobile/shmob_drm_regs.h b/drivers/gpu/drm/shmobile/shmob_drm_regs.h
new file mode 100644
index 00000000000..7923cdd6368
--- /dev/null
+++ b/drivers/gpu/drm/shmobile/shmob_drm_regs.h
@@ -0,0 +1,311 @@
+/*
+ * shmob_drm_regs.h  --  SH Mobile DRM registers
+ *
+ * Copyright (C) 2012 Renesas Corporation
+ *
+ * Laurent Pinchart (laurent.pinchart@ideasonboard.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef __SHMOB_DRM_REGS_H__
+#define __SHMOB_DRM_REGS_H__
+
+#include <linux/io.h>
+
+/* Register definitions */
+#define LDDCKPAT1R		0x400
+#define LDDCKPAT2R		0x404
+#define LDDCKR			0x410
+#define LDDCKR_ICKSEL_BUS	(0 << 16)
+#define LDDCKR_ICKSEL_MIPI	(1 << 16)
+#define LDDCKR_ICKSEL_HDMI	(2 << 16)
+#define LDDCKR_ICKSEL_EXT	(3 << 16)
+#define LDDCKR_ICKSEL_MASK	(7 << 16)
+#define LDDCKR_MOSEL		(1 << 6)
+#define LDDCKSTPR		0x414
+#define LDDCKSTPR_DCKSTS	(1 << 16)
+#define LDDCKSTPR_DCKSTP	(1 << 0)
+#define LDMT1R			0x418
+#define LDMT1R_VPOL		(1 << 28)
+#define LDMT1R_HPOL		(1 << 27)
+#define LDMT1R_DWPOL		(1 << 26)
+#define LDMT1R_DIPOL		(1 << 25)
+#define LDMT1R_DAPOL		(1 << 24)
+#define LDMT1R_HSCNT		(1 << 17)
+#define LDMT1R_DWCNT		(1 << 16)
+#define LDMT1R_IFM		(1 << 12)
+#define LDMT1R_MIFTYP_RGB8	(0x0 << 0)
+#define LDMT1R_MIFTYP_RGB9	(0x4 << 0)
+#define LDMT1R_MIFTYP_RGB12A	(0x5 << 0)
+#define LDMT1R_MIFTYP_RGB12B	(0x6 << 0)
+#define LDMT1R_MIFTYP_RGB16	(0x7 << 0)
+#define LDMT1R_MIFTYP_RGB18	(0xa << 0)
+#define LDMT1R_MIFTYP_RGB24	(0xb << 0)
+#define LDMT1R_MIFTYP_YCBCR	(0xf << 0)
+#define LDMT1R_MIFTYP_SYS8A	(0x0 << 0)
+#define LDMT1R_MIFTYP_SYS8B	(0x1 << 0)
+#define LDMT1R_MIFTYP_SYS8C	(0x2 << 0)
+#define LDMT1R_MIFTYP_SYS8D	(0x3 << 0)
+#define LDMT1R_MIFTYP_SYS9	(0x4 << 0)
+#define LDMT1R_MIFTYP_SYS12	(0x5 << 0)
+#define LDMT1R_MIFTYP_SYS16A	(0x7 << 0)
+#define LDMT1R_MIFTYP_SYS16B	(0x8 << 0)
+#define LDMT1R_MIFTYP_SYS16C	(0x9 << 0)
+#define LDMT1R_MIFTYP_SYS18	(0xa << 0)
+#define LDMT1R_MIFTYP_SYS24	(0xb << 0)
+#define LDMT1R_MIFTYP_MASK	(0xf << 0)
+#define LDMT2R			0x41c
+#define LDMT2R_CSUP_MASK	(7 << 26)
+#define LDMT2R_CSUP_SHIFT	26
+#define LDMT2R_RSV		(1 << 25)
+#define LDMT2R_VSEL		(1 << 24)
+#define LDMT2R_WCSC_MASK	(0xff << 16)
+#define LDMT2R_WCSC_SHIFT	16
+#define LDMT2R_WCEC_MASK	(0xff << 8)
+#define LDMT2R_WCEC_SHIFT	8
+#define LDMT2R_WCLW_MASK	(0xff << 0)
+#define LDMT2R_WCLW_SHIFT	0
+#define LDMT3R			0x420
+#define LDMT3R_RDLC_MASK	(0x3f << 24)
+#define LDMT3R_RDLC_SHIFT	24
+#define LDMT3R_RCSC_MASK	(0xff << 16)
+#define LDMT3R_RCSC_SHIFT	16
+#define LDMT3R_RCEC_MASK	(0xff << 8)
+#define LDMT3R_RCEC_SHIFT	8
+#define LDMT3R_RCLW_MASK	(0xff << 0)
+#define LDMT3R_RCLW_SHIFT	0
+#define LDDFR			0x424
+#define LDDFR_CF1		(1 << 18)
+#define LDDFR_CF0		(1 << 17)
+#define LDDFR_CC		(1 << 16)
+#define LDDFR_YF_420		(0 << 8)
+#define LDDFR_YF_422		(1 << 8)
+#define LDDFR_YF_444		(2 << 8)
+#define LDDFR_YF_MASK		(3 << 8)
+#define LDDFR_PKF_ARGB32	(0x00 << 0)
+#define LDDFR_PKF_RGB16		(0x03 << 0)
+#define LDDFR_PKF_RGB24		(0x0b << 0)
+#define LDDFR_PKF_MASK		(0x1f << 0)
+#define LDSM1R			0x428
+#define LDSM1R_OS		(1 << 0)
+#define LDSM2R			0x42c
+#define LDSM2R_OSTRG		(1 << 0)
+#define LDSA1R			0x430
+#define LDSA2R			0x434
+#define LDMLSR			0x438
+#define LDWBFR			0x43c
+#define LDWBCNTR		0x440
+#define LDWBAR			0x444
+#define LDHCNR			0x448
+#define LDHSYNR			0x44c
+#define LDVLNR			0x450
+#define LDVSYNR			0x454
+#define LDHPDR			0x458
+#define LDVPDR			0x45c
+#define LDPMR			0x460
+#define LDPMR_LPS		(3 << 0)
+#define LDINTR			0x468
+#define LDINTR_FE		(1 << 10)
+#define LDINTR_VSE		(1 << 9)
+#define LDINTR_VEE		(1 << 8)
+#define LDINTR_FS		(1 << 2)
+#define LDINTR_VSS		(1 << 1)
+#define LDINTR_VES		(1 << 0)
+#define LDINTR_STATUS_MASK	(0xff << 0)
+#define LDSR			0x46c
+#define LDSR_MSS		(1 << 10)
+#define LDSR_MRS		(1 << 8)
+#define LDSR_AS			(1 << 1)
+#define LDCNT1R			0x470
+#define LDCNT1R_DE		(1 << 0)
+#define LDCNT2R			0x474
+#define LDCNT2R_BR		(1 << 8)
+#define LDCNT2R_MD		(1 << 3)
+#define LDCNT2R_SE		(1 << 2)
+#define LDCNT2R_ME		(1 << 1)
+#define LDCNT2R_DO		(1 << 0)
+#define LDRCNTR			0x478
+#define LDRCNTR_SRS		(1 << 17)
+#define LDRCNTR_SRC		(1 << 16)
+#define LDRCNTR_MRS		(1 << 1)
+#define LDRCNTR_MRC		(1 << 0)
+#define LDDDSR			0x47c
+#define LDDDSR_LS		(1 << 2)
+#define LDDDSR_WS		(1 << 1)
+#define LDDDSR_BS		(1 << 0)
+#define LDHAJR			0x4a0
+
+#define LDDWD0R			0x800
+#define LDDWDxR_WDACT		(1 << 28)
+#define LDDWDxR_RSW		(1 << 24)
+#define LDDRDR			0x840
+#define LDDRDR_RSR		(1 << 24)
+#define LDDRDR_DRD_MASK		(0x3ffff << 0)
+#define LDDWAR			0x900
+#define LDDWAR_WA		(1 << 0)
+#define LDDRAR			0x904
+#define LDDRAR_RA		(1 << 0)
+
+#define LDBCR			0xb00
+#define LDBCR_UPC(n)		(1 << ((n) + 16))
+#define LDBCR_UPF(n)		(1 << ((n) + 8))
+#define LDBCR_UPD(n)		(1 << ((n) + 0))
+#define LDBnBSIFR(n)		(0xb20 + (n) * 0x20 + 0x00)
+#define LDBBSIFR_EN		(1 << 31)
+#define LDBBSIFR_VS		(1 << 29)
+#define LDBBSIFR_BRSEL		(1 << 28)
+#define LDBBSIFR_MX		(1 << 27)
+#define LDBBSIFR_MY		(1 << 26)
+#define LDBBSIFR_CV3		(3 << 24)
+#define LDBBSIFR_CV2		(2 << 24)
+#define LDBBSIFR_CV1		(1 << 24)
+#define LDBBSIFR_CV0		(0 << 24)
+#define LDBBSIFR_CV_MASK	(3 << 24)
+#define LDBBSIFR_LAY_MASK	(0xff << 16)
+#define LDBBSIFR_LAY_SHIFT	16
+#define LDBBSIFR_ROP3_MASK	(0xff << 16)
+#define LDBBSIFR_ROP3_SHIFT	16
+#define LDBBSIFR_AL_PL8		(3 << 14)
+#define LDBBSIFR_AL_PL1		(2 << 14)
+#define LDBBSIFR_AL_PK		(1 << 14)
+#define LDBBSIFR_AL_1		(0 << 14)
+#define LDBBSIFR_AL_MASK	(3 << 14)
+#define LDBBSIFR_SWPL		(1 << 10)
+#define LDBBSIFR_SWPW		(1 << 9)
+#define LDBBSIFR_SWPB		(1 << 8)
+#define LDBBSIFR_RY		(1 << 7)
+#define LDBBSIFR_CHRR_420	(2 << 0)
+#define LDBBSIFR_CHRR_422	(1 << 0)
+#define LDBBSIFR_CHRR_444	(0 << 0)
+#define LDBBSIFR_RPKF_ARGB32	(0x00 << 0)
+#define LDBBSIFR_RPKF_RGB16	(0x03 << 0)
+#define LDBBSIFR_RPKF_RGB24	(0x0b << 0)
+#define LDBBSIFR_RPKF_MASK	(0x1f << 0)
+#define LDBnBSSZR(n)		(0xb20 + (n) * 0x20 + 0x04)
+#define LDBBSSZR_BVSS_MASK	(0xfff << 16)
+#define LDBBSSZR_BVSS_SHIFT	16
+#define LDBBSSZR_BHSS_MASK	(0xfff << 0)
+#define LDBBSSZR_BHSS_SHIFT	0
+#define LDBnBLOCR(n)		(0xb20 + (n) * 0x20 + 0x08)
+#define LDBBLOCR_CVLC_MASK	(0xfff << 16)
+#define LDBBLOCR_CVLC_SHIFT	16
+#define LDBBLOCR_CHLC_MASK	(0xfff << 0)
+#define LDBBLOCR_CHLC_SHIFT	0
+#define LDBnBSMWR(n)		(0xb20 + (n) * 0x20 + 0x0c)
+#define LDBBSMWR_BSMWA_MASK	(0xffff << 16)
+#define LDBBSMWR_BSMWA_SHIFT	16
+#define LDBBSMWR_BSMW_MASK	(0xffff << 0)
+#define LDBBSMWR_BSMW_SHIFT	0
+#define LDBnBSAYR(n)		(0xb20 + (n) * 0x20 + 0x10)
+#define LDBBSAYR_FG1A_MASK	(0xff << 24)
+#define LDBBSAYR_FG1A_SHIFT	24
+#define LDBBSAYR_FG1R_MASK	(0xff << 16)
+#define LDBBSAYR_FG1R_SHIFT	16
+#define LDBBSAYR_FG1G_MASK	(0xff << 8)
+#define LDBBSAYR_FG1G_SHIFT	8
+#define LDBBSAYR_FG1B_MASK	(0xff << 0)
+#define LDBBSAYR_FG1B_SHIFT	0
+#define LDBnBSACR(n)		(0xb20 + (n) * 0x20 + 0x14)
+#define LDBBSACR_FG2A_MASK	(0xff << 24)
+#define LDBBSACR_FG2A_SHIFT	24
+#define LDBBSACR_FG2R_MASK	(0xff << 16)
+#define LDBBSACR_FG2R_SHIFT	16
+#define LDBBSACR_FG2G_MASK	(0xff << 8)
+#define LDBBSACR_FG2G_SHIFT	8
+#define LDBBSACR_FG2B_MASK	(0xff << 0)
+#define LDBBSACR_FG2B_SHIFT	0
+#define LDBnBSAAR(n)		(0xb20 + (n) * 0x20 + 0x18)
+#define LDBBSAAR_AP_MASK	(0xff << 24)
+#define LDBBSAAR_AP_SHIFT	24
+#define LDBBSAAR_R_MASK		(0xff << 16)
+#define LDBBSAAR_R_SHIFT	16
+#define LDBBSAAR_GY_MASK	(0xff << 8)
+#define LDBBSAAR_GY_SHIFT	8
+#define LDBBSAAR_B_MASK		(0xff << 0)
+#define LDBBSAAR_B_SHIFT	0
+#define LDBnBPPCR(n)		(0xb20 + (n) * 0x20 + 0x1c)
+#define LDBBPPCR_AP_MASK	(0xff << 24)
+#define LDBBPPCR_AP_SHIFT	24
+#define LDBBPPCR_R_MASK		(0xff << 16)
+#define LDBBPPCR_R_SHIFT	16
+#define LDBBPPCR_GY_MASK	(0xff << 8)
+#define LDBBPPCR_GY_SHIFT	8
+#define LDBBPPCR_B_MASK		(0xff << 0)
+#define LDBBPPCR_B_SHIFT	0
+#define LDBnBBGCL(n)		(0xb10 + (n) * 0x04)
+#define LDBBBGCL_BGA_MASK	(0xff << 24)
+#define LDBBBGCL_BGA_SHIFT	24
+#define LDBBBGCL_BGR_MASK	(0xff << 16)
+#define LDBBBGCL_BGR_SHIFT	16
+#define LDBBBGCL_BGG_MASK	(0xff << 8)
+#define LDBBBGCL_BGG_SHIFT	8
+#define LDBBBGCL_BGB_MASK	(0xff << 0)
+#define LDBBBGCL_BGB_SHIFT	0
+
+#define LCDC_SIDE_B_OFFSET	0x1000
+#define LCDC_MIRROR_OFFSET	0x2000
+
+static inline bool lcdc_is_banked(u32 reg)
+{
+	switch (reg) {
+	case LDMT1R:
+	case LDMT2R:
+	case LDMT3R:
+	case LDDFR:
+	case LDSM1R:
+	case LDSA1R:
+	case LDSA2R:
+	case LDMLSR:
+	case LDWBFR:
+	case LDWBCNTR:
+	case LDWBAR:
+	case LDHCNR:
+	case LDHSYNR:
+	case LDVLNR:
+	case LDVSYNR:
+	case LDHPDR:
+	case LDVPDR:
+	case LDHAJR:
+		return true;
+	default:
+		return reg >= LDBnBBGCL(0) && reg <= LDBnBPPCR(3);
+	}
+}
+
+static inline void lcdc_write_mirror(struct shmob_drm_device *sdev, u32 reg,
+				     u32 data)
+{
+	iowrite32(data, sdev->mmio + reg + LCDC_MIRROR_OFFSET);
+}
+
+static inline void lcdc_write(struct shmob_drm_device *sdev, u32 reg, u32 data)
+{
+	iowrite32(data, sdev->mmio + reg);
+	if (lcdc_is_banked(reg))
+		iowrite32(data, sdev->mmio + reg + LCDC_SIDE_B_OFFSET);
+}
+
+static inline u32 lcdc_read(struct shmob_drm_device *sdev, u32 reg)
+{
+	return ioread32(sdev->mmio + reg);
+}
+
+static inline int lcdc_wait_bit(struct shmob_drm_device *sdev, u32 reg,
+				u32 mask, u32 until)
+{
+	unsigned long timeout = jiffies + msecs_to_jiffies(5);
+
+	while ((lcdc_read(sdev, reg) & mask) != until) {
+		if (time_after(jiffies, timeout))
+			return -ETIMEDOUT;
+		cpu_relax();
+	}
+
+	return 0;
+}
+
+#endif /* __SHMOB_DRM_REGS_H__ */
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 617d87ae2b1..316ce64e559 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -590,6 +590,7 @@ struct drm_connector {
 	int video_latency[2];	/* [0]: progressive, [1]: interlaced */
 	int audio_latency[2];
 	int null_edid_counter; /* needed to workaround some HW bugs where we get all 0s */
+	unsigned bad_edid_counter;
 };
 
 /**
@@ -1032,7 +1033,7 @@ extern int drm_add_modes_noedid(struct drm_connector *connector,
 				int hdisplay, int vdisplay);
 
 extern int drm_edid_header_is_valid(const u8 *raw_edid);
-extern bool drm_edid_block_valid(u8 *raw_edid, int block);
+extern bool drm_edid_block_valid(u8 *raw_edid, int block, bool print_bad_edid);
 extern bool drm_edid_is_valid(struct edid *edid);
 struct drm_display_mode *drm_mode_find_dmt(struct drm_device *dev,
 					   int hsize, int vsize, int fresh,
diff --git a/include/drm/drm_fb_cma_helper.h b/include/drm/drm_fb_cma_helper.h
new file mode 100644
index 00000000000..76c70983754
--- /dev/null
+++ b/include/drm/drm_fb_cma_helper.h
@@ -0,0 +1,27 @@
+#ifndef __DRM_FB_CMA_HELPER_H__
+#define __DRM_FB_CMA_HELPER_H__
+
+struct drm_fbdev_cma;
+struct drm_gem_cma_object;
+
+struct drm_framebuffer;
+struct drm_device;
+struct drm_file;
+struct drm_mode_fb_cmd2;
+
+struct drm_fbdev_cma *drm_fbdev_cma_init(struct drm_device *dev,
+	unsigned int preferred_bpp, unsigned int num_crtc,
+	unsigned int max_conn_count);
+void drm_fbdev_cma_fini(struct drm_fbdev_cma *fbdev_cma);
+
+void drm_fbdev_cma_restore_mode(struct drm_fbdev_cma *fbdev_cma);
+void drm_fbdev_cma_hotplug_event(struct drm_fbdev_cma *fbdev_cma);
+
+struct drm_framebuffer *drm_fb_cma_create(struct drm_device *dev,
+	struct drm_file *file_priv, struct drm_mode_fb_cmd2 *mode_cmd);
+
+struct drm_gem_cma_object *drm_fb_cma_get_gem_obj(struct drm_framebuffer *fb,
+	unsigned int plane);
+
+#endif
+
diff --git a/include/drm/drm_fourcc.h b/include/drm/drm_fourcc.h
index bdf0152cbbe..fac7235281f 100644
--- a/include/drm/drm_fourcc.h
+++ b/include/drm/drm_fourcc.h
@@ -106,6 +106,8 @@
 #define DRM_FORMAT_NV21		fourcc_code('N', 'V', '2', '1') /* 2x2 subsampled Cb:Cr plane */
 #define DRM_FORMAT_NV16		fourcc_code('N', 'V', '1', '6') /* 2x1 subsampled Cr:Cb plane */
 #define DRM_FORMAT_NV61		fourcc_code('N', 'V', '6', '1') /* 2x1 subsampled Cb:Cr plane */
+#define DRM_FORMAT_NV24		fourcc_code('N', 'V', '2', '4') /* non-subsampled Cr:Cb plane */
+#define DRM_FORMAT_NV42		fourcc_code('N', 'V', '4', '2') /* non-subsampled Cb:Cr plane */
 
 /* 2 non contiguous plane YCbCr */
 #define DRM_FORMAT_NV12M	fourcc_code('N', 'M', '1', '2') /* 2x2 subsampled Cr:Cb plane */
diff --git a/include/drm/drm_gem_cma_helper.h b/include/drm/drm_gem_cma_helper.h
new file mode 100644
index 00000000000..f0f6b1af25a
--- /dev/null
+++ b/include/drm/drm_gem_cma_helper.h
@@ -0,0 +1,44 @@
+#ifndef __DRM_GEM_CMA_HELPER_H__
+#define __DRM_GEM_CMA_HELPER_H__
+
+struct drm_gem_cma_object {
+	struct drm_gem_object base;
+	dma_addr_t paddr;
+	void *vaddr;
+};
+
+static inline struct drm_gem_cma_object *
+to_drm_gem_cma_obj(struct drm_gem_object *gem_obj)
+{
+	return container_of(gem_obj, struct drm_gem_cma_object, base);
+}
+
+/* free gem object. */
+void drm_gem_cma_free_object(struct drm_gem_object *gem_obj);
+
+/* create memory region for drm framebuffer. */
+int drm_gem_cma_dumb_create(struct drm_file *file_priv,
+		struct drm_device *drm, struct drm_mode_create_dumb *args);
+
+/* map memory region for drm framebuffer to user space. */
+int drm_gem_cma_dumb_map_offset(struct drm_file *file_priv,
+		struct drm_device *drm, uint32_t handle, uint64_t *offset);
+
+/* set vm_flags and we can change the vm attribute to other one at here. */
+int drm_gem_cma_mmap(struct file *filp, struct vm_area_struct *vma);
+
+/*
+ * destroy memory region allocated.
+ *	- a gem handle and physical memory region pointed by a gem object
+ *	would be released by drm_gem_handle_delete().
+ */
+int drm_gem_cma_dumb_destroy(struct drm_file *file_priv,
+		struct drm_device *drm, unsigned int handle);
+
+/* allocate physical memory. */
+struct drm_gem_cma_object *drm_gem_cma_create(struct drm_device *drm,
+		unsigned int size);
+
+extern const struct vm_operations_struct drm_gem_cma_vm_ops;
+
+#endif /* __DRM_GEM_CMA_HELPER_H__ */
diff --git a/include/linux/platform_data/shmob_drm.h b/include/linux/platform_data/shmob_drm.h
new file mode 100644
index 00000000000..7c686d335c1
--- /dev/null
+++ b/include/linux/platform_data/shmob_drm.h
@@ -0,0 +1,99 @@
+/*
+ * shmob_drm.h  --  SH Mobile DRM driver
+ *
+ * Copyright (C) 2012 Renesas Corporation
+ *
+ * Laurent Pinchart (laurent.pinchart@ideasonboard.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef __SHMOB_DRM_H__
+#define __SHMOB_DRM_H__
+
+#include <linux/kernel.h>
+
+#include <drm/drm_mode.h>
+
+struct sh_mobile_meram_cfg;
+struct sh_mobile_meram_info;
+
+enum shmob_drm_clk_source {
+	SHMOB_DRM_CLK_BUS,
+	SHMOB_DRM_CLK_PERIPHERAL,
+	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 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 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;
+	const struct sh_mobile_meram_cfg *meram;
+};
+
+#endif /* __SHMOB_DRM_H__ */