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From: Anitha Chrisanthus <anitha.chrisanthus@intel.com>
To: dri-devel@lists.freedesktop.org, anitha.chrisanthus@intel.com,
 bob.j.paauwe@intel.com, edmund.j.dea@intel.com
Date: Tue, 30 Jun 2020 14:27:13 -0700
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Subject: [Intel-gfx] [PATCH 01/59] drm/kmb: Add support for KeemBay Display
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Initial check-in for basic display driver for KeemBay family of SOCs.
This is not tested and does not work and also there are many TBDs in the
code which will be implemented in future commits.

Signed-off-by: Anitha Chrisanthus <anitha.chrisanthus@intel.com>
Reviewed-by: Bob Paauwe <bob.j.paauwe@intel.com>
---
 drivers/gpu/drm/Kconfig         |   2 +
 drivers/gpu/drm/Makefile        |   1 +
 drivers/gpu/drm/kmb/Kconfig     |  12 ++
 drivers/gpu/drm/kmb/Makefile    |   2 +
 drivers/gpu/drm/kmb/kmb_crtc.c  | 215 +++++++++++++++++++
 drivers/gpu/drm/kmb/kmb_crtc.h  |  59 ++++++
 drivers/gpu/drm/kmb/kmb_drv.c   | 372 ++++++++++++++++++++++++++++++++
 drivers/gpu/drm/kmb/kmb_drv.h   |  67 ++++++
 drivers/gpu/drm/kmb/kmb_plane.c | 252 ++++++++++++++++++++++
 drivers/gpu/drm/kmb/kmb_plane.h |  52 +++++
 drivers/gpu/drm/kmb/kmb_regs.h  | 460 ++++++++++++++++++++++++++++++++++++++++
 11 files changed, 1494 insertions(+)
 create mode 100644 drivers/gpu/drm/kmb/Kconfig
 create mode 100644 drivers/gpu/drm/kmb/Makefile
 create mode 100644 drivers/gpu/drm/kmb/kmb_crtc.c
 create mode 100644 drivers/gpu/drm/kmb/kmb_crtc.h
 create mode 100644 drivers/gpu/drm/kmb/kmb_drv.c
 create mode 100644 drivers/gpu/drm/kmb/kmb_drv.h
 create mode 100644 drivers/gpu/drm/kmb/kmb_plane.c
 create mode 100644 drivers/gpu/drm/kmb/kmb_plane.h
 create mode 100644 drivers/gpu/drm/kmb/kmb_regs.h

diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index c4fd57d..5292574 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -275,6 +275,8 @@ source "drivers/gpu/drm/nouveau/Kconfig"
 
 source "drivers/gpu/drm/i915/Kconfig"
 
+source "drivers/gpu/drm/kmb/Kconfig"
+
 config DRM_VGEM
 	tristate "Virtual GEM provider"
 	depends on DRM
diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
index 2c0e5a7..bdbdc63 100644
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -71,6 +71,7 @@ obj-$(CONFIG_DRM_AMDGPU)+= amd/amdgpu/
 obj-$(CONFIG_DRM_MGA)	+= mga/
 obj-$(CONFIG_DRM_I810)	+= i810/
 obj-$(CONFIG_DRM_I915)	+= i915/
+obj-$(CONFIG_DRM_KMB_DISPLAY)  += kmb/
 obj-$(CONFIG_DRM_MGAG200) += mgag200/
 obj-$(CONFIG_DRM_V3D)  += v3d/
 obj-$(CONFIG_DRM_VC4)  += vc4/
diff --git a/drivers/gpu/drm/kmb/Kconfig b/drivers/gpu/drm/kmb/Kconfig
new file mode 100644
index 0000000..005a9962
--- /dev/null
+++ b/drivers/gpu/drm/kmb/Kconfig
@@ -0,0 +1,12 @@
+config DRM_KMB_DISPLAY
+	tristate "KEEMBAY DISPLAY"
+	depends on DRM && OF && (ARM || ARM64)
+	depends on COMMON_CLK
+	select DRM_KMS_HELPER
+	select DRM_KMS_CMA_HELPER
+	select DRM_GEM_CMA_HELPER
+	select VIDEOMODE_HELPERS
+	help
+	Choose this option if you have an KEEMBAY DISPLAY controller.
+
+	If M is selected the module will be called kmb-display.
diff --git a/drivers/gpu/drm/kmb/Makefile b/drivers/gpu/drm/kmb/Makefile
new file mode 100644
index 0000000..be9f19c
--- /dev/null
+++ b/drivers/gpu/drm/kmb/Makefile
@@ -0,0 +1,2 @@
+kmb-display-y := kmb_crtc.o kmb_drv.o kmb_plane.o
+obj-$(CONFIG_DRM_KMB_DISPLAY)	+= kmb-display.o
diff --git a/drivers/gpu/drm/kmb/kmb_crtc.c b/drivers/gpu/drm/kmb/kmb_crtc.c
new file mode 100644
index 0000000..ab1fff8
--- /dev/null
+++ b/drivers/gpu/drm/kmb/kmb_crtc.c
@@ -0,0 +1,215 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright © 2018 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ *
+ */
+
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_fb_helper.h>
+#include <drm/drm_fb_cma_helper.h>
+#include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_of.h>
+#include <drm/drm_plane_helper.h>
+#include <linux/clk.h>
+#include <linux/of_graph.h>
+#include <linux/platform_data/simplefb.h>
+#include <video/videomode.h>
+#include "kmb_crtc.h"
+#include "kmb_drv.h"
+#include "kmb_plane.h"
+#include "kmb_regs.h"
+
+static void kmb_crtc_cleanup(struct drm_crtc *crtc)
+{
+	struct kmb_crtc *l_crtc = to_kmb_crtc(crtc);
+
+	drm_crtc_cleanup(crtc);
+	kfree(l_crtc);
+}
+
+static int kmb_crtc_enable_vblank(struct drm_crtc *crtc)
+{
+	struct kmb_drm_private *lcd = crtc_to_kmb_priv(crtc);
+
+	/*clear interrupt */
+	kmb_write(lcd, LCD_INT_CLEAR, LCD_INT_VERT_COMP);
+	/*set which interval to generate vertical interrupt */
+	kmb_write(lcd, LCD_VSTATUS_COMPARE, LCD_VSTATUS_COMPARE_VSYNC);
+	/* enable vertical interrupt */
+	kmb_write(lcd, LCD_INT_ENABLE, LCD_INT_VERT_COMP);
+	return 0;
+}
+
+static void kmb_crtc_disable_vblank(struct drm_crtc *crtc)
+{
+	struct kmb_drm_private *lcd = crtc_to_kmb_priv(crtc);
+
+	/*clear interrupt */
+	kmb_write(lcd, LCD_INT_CLEAR, LCD_INT_VERT_COMP);
+	/* disable vertical interrupt */
+	kmb_write(lcd, LCD_INT_ENABLE, 0);
+
+/* TBD
+ *  set the BIT2 (VERTICAL_COMPARE_INTERRUPT) of the LCD_INT_ENABLE register
+ *  set the required bit LCD_VSTATUS_COMPARE register
+ *  Not sure if anything needs to be done in the ICB
+ */
+}
+
+static const struct drm_crtc_funcs kmb_crtc_funcs = {
+	.destroy = kmb_crtc_cleanup,
+	.set_config = drm_atomic_helper_set_config,
+	.page_flip = drm_atomic_helper_page_flip,
+	.reset = drm_atomic_helper_crtc_reset,
+	.atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
+	.atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
+	.enable_vblank = kmb_crtc_enable_vblank,
+	.disable_vblank = kmb_crtc_disable_vblank,
+};
+
+static void kmb_crtc_mode_set_nofb(struct drm_crtc *crtc)
+{
+	struct kmb_drm_private *lcd = crtc_to_kmb_priv(crtc);
+	struct drm_display_mode *m = &crtc->state->adjusted_mode;
+	struct videomode vm;
+	int vsync_start_offset;
+	int vsync_end_offset;
+	unsigned int ctrl = 0;
+
+	vm.vfront_porch = m->crtc_vsync_start - m->crtc_vdisplay;
+	vm.vback_porch = m->crtc_vtotal - m->crtc_vsync_end;
+	vm.vsync_len = m->crtc_vsync_end - m->crtc_vsync_start;
+	vm.hfront_porch = m->crtc_hsync_start - m->crtc_hdisplay;
+	vm.hback_porch = m->crtc_htotal - m->crtc_hsync_end;
+	vm.hsync_len = m->crtc_hsync_end - m->crtc_hsync_start;
+
+	vsync_start_offset = m->crtc_vsync_start - m->crtc_hsync_start;
+	vsync_end_offset = m->crtc_vsync_end - m->crtc_hsync_end;
+
+	kmb_write(lcd, LCD_V_ACTIVEHEIGHT, m->crtc_vdisplay - 1);
+	kmb_write(lcd, LCD_V_BACKPORCH, vm.vback_porch - 1);
+	kmb_write(lcd, LCD_V_FRONTPORCH, vm.vfront_porch - 1);
+	kmb_write(lcd, LCD_VSYNC_WIDTH, vm.vsync_len - 1);
+	kmb_write(lcd, LCD_H_ACTIVEWIDTH, m->crtc_hdisplay - 1);
+	kmb_write(lcd, LCD_H_BACKPORCH, vm.hback_porch - 1);
+	kmb_write(lcd, LCD_H_FRONTPORCH, vm.hfront_porch - 1);
+	kmb_write(lcd, LCD_HSYNC_WIDTH, vm.hsync_len - 1);
+
+	if (m->flags == DRM_MODE_FLAG_INTERLACE) {
+		kmb_write(lcd, LCD_VSYNC_WIDTH_EVEN, vm.vsync_len - 1);
+		kmb_write(lcd, LCD_V_BACKPORCH_EVEN, vm.vback_porch - 1);
+		kmb_write(lcd, LCD_V_FRONTPORCH_EVEN, vm.vfront_porch - 1);
+		kmb_write(lcd, LCD_V_ACTIVEHEIGHT_EVEN, m->crtc_vdisplay - 1);
+		kmb_write(lcd, LCD_VSYNC_START_EVEN, vsync_start_offset);
+		kmb_write(lcd, LCD_VSYNC_END_EVEN, vsync_end_offset);
+	}
+	/* enable all 4 layers */
+	ctrl = LCD_CTRL_ENABLE | LCD_CTRL_VL1_ENABLE
+	    | LCD_CTRL_VL2_ENABLE | LCD_CTRL_GL1_ENABLE | LCD_CTRL_GL2_ENABLE;
+	ctrl |= LCD_CTRL_PROGRESSIVE | LCD_CTRL_TIM_GEN_ENABLE
+	    | LCD_CTRL_OUTPUT_ENABLED;
+	kmb_write(lcd, LCD_CONTROL, ctrl);
+
+	kmb_write(lcd, LCD_TIMING_GEN_TRIG, ENABLE);
+
+	/* TBD */
+	/* set clocks here */
+}
+
+static void kmb_crtc_atomic_enable(struct drm_crtc *crtc,
+				   struct drm_crtc_state *old_state)
+{
+	struct kmb_drm_private *lcd = crtc_to_kmb_priv(crtc);
+
+	clk_prepare_enable(lcd->clk);
+	kmb_crtc_mode_set_nofb(crtc);
+	drm_crtc_vblank_on(crtc);
+}
+
+static void kmb_crtc_atomic_disable(struct drm_crtc *crtc,
+				    struct drm_crtc_state *old_state)
+{
+	struct kmb_drm_private *lcd = crtc_to_kmb_priv(crtc);
+
+	/* always disable planes on the CRTC that is being turned off */
+	drm_atomic_helper_disable_planes_on_crtc(old_state, false);
+
+	drm_crtc_vblank_off(crtc);
+	clk_disable_unprepare(lcd->clk);
+}
+
+static void kmb_crtc_atomic_begin(struct drm_crtc *crtc,
+				  struct drm_crtc_state *state)
+{
+	/* TBD */
+	/*disable  vblank interrupts here
+	 * clear BIT 2 (VERTICAL_COMPARE_INTERRUPT) LCD_INT_ENABLE
+	 */
+}
+
+static void kmb_crtc_atomic_flush(struct drm_crtc *crtc,
+				  struct drm_crtc_state *state)
+{
+	/* TBD */
+	/*enable  vblank interrupts after
+	 * set BIT 2 (VERTICAL_COMPARE_INTERRUPT) LCD_INT_ENABLE
+	 */
+
+	spin_lock_irq(&crtc->dev->event_lock);
+	if (crtc->state->event)
+		drm_crtc_send_vblank_event(crtc, crtc->state->event);
+	crtc->state->event = NULL;
+	spin_unlock_irq(&crtc->dev->event_lock);
+
+}
+
+static const struct drm_crtc_helper_funcs kmb_crtc_helper_funcs = {
+	.atomic_begin = kmb_crtc_atomic_begin,
+	.atomic_enable = kmb_crtc_atomic_enable,
+	.atomic_disable = kmb_crtc_atomic_disable,
+	.atomic_flush = kmb_crtc_atomic_flush,
+};
+
+int kmb_setup_crtc(struct drm_device *drm)
+{
+	struct kmb_drm_private *lcd = drm->dev_private;
+	struct drm_plane *primary;
+	int ret;
+
+	primary = kmb_plane_init(drm);
+	if (IS_ERR(primary))
+		return PTR_ERR(primary);
+
+	ret = drm_crtc_init_with_planes(drm, &lcd->crtc, primary, NULL,
+					&kmb_crtc_funcs, NULL);
+	if (ret) {
+		kmb_plane_destroy(primary);
+		return ret;
+	}
+
+	drm_crtc_helper_add(&lcd->crtc, &kmb_crtc_helper_funcs);
+	return 0;
+}
diff --git a/drivers/gpu/drm/kmb/kmb_crtc.h b/drivers/gpu/drm/kmb/kmb_crtc.h
new file mode 100644
index 0000000..0952733
--- /dev/null
+++ b/drivers/gpu/drm/kmb/kmb_crtc.h
@@ -0,0 +1,59 @@
+/* SPDX-License-Identifier: MIT
+ *
+ * Copyright © 2018 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ *
+ */
+#ifndef __KMB_CRTC_H__
+#define __KMB_CRTC_H__
+
+#include <drm/drm_file.h>
+#include <drm/drm_device.h>
+#include <drm/drm_vblank.h>
+#include <drm/drm_fb_helper.h>
+#include <drm/drm_fourcc.h>
+#include <drm/drm_debugfs.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_print.h>
+#include <linux/clk.h>
+#include <linux/of_graph.h>
+#include <linux/platform_data/simplefb.h>
+#include <video/videomode.h>
+#include <linux/mutex.h>
+#include <linux/wait.h>
+#include <linux/platform_device.h>
+#include "kmb_drv.h"
+
+struct kmb_crtc {
+	struct drm_crtc crtc_base;
+	struct kmb_drm_private kmb_dev;
+};
+
+struct kmb_crtc_state {
+	struct drm_crtc_state crtc_base;
+};
+#define to_kmb_crtc_state(x) container_of(x, struct kmb_crtc_state, crtc_base)
+#define to_kmb_crtc(x) container_of(x, struct kmb_crtc, crtc_base)
+extern void kmb_plane_destroy(struct drm_plane *plane);
+extern struct drm_plane *kmb_plane_init(struct drm_device *drm);
+#endif /* __KMB_CRTC_H__ */
diff --git a/drivers/gpu/drm/kmb/kmb_drv.c b/drivers/gpu/drm/kmb/kmb_drv.c
new file mode 100644
index 0000000..fced630
--- /dev/null
+++ b/drivers/gpu/drm/kmb/kmb_drv.c
@@ -0,0 +1,372 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright © 2018 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ *
+ */
+#include <linux/module.h>
+#include <linux/spinlock.h>
+#include <linux/clk.h>
+#include <linux/component.h>
+#include <linux/console.h>
+#include <linux/list.h>
+#include <linux/of_graph.h>
+#include <linux/of_reserved_mem.h>
+#include <linux/pm_runtime.h>
+#include <drm/drm.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_ioctl.h>
+#include <drm/drm_fb_helper.h>
+#include <drm/drm_fb_cma_helper.h>
+#include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_of.h>
+#include <drm/drm_irq.h>
+#include "kmb_drv.h"
+#include "kmb_regs.h"
+#include "kmb_crtc.h"
+#include "kmb_plane.h"
+
+static int kmb_load(struct drm_device *drm, unsigned long flags)
+{
+	struct kmb_drm_private *lcd = drm->dev_private;
+	struct platform_device *pdev = to_platform_device(drm->dev);
+	struct resource *res;
+	/*u32 version; */
+	int ret;
+
+	/* TBD - not sure if clock_get needs to be called here */
+	/*
+	 *  lcd->clk = devm_clk_get(drm->dev, "pxlclk");
+	 * if (IS_ERR(lcd->clk))
+	 *  return PTR_ERR(lcd->clk);
+	 */
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	lcd->mmio = devm_ioremap_resource(drm->dev, res);
+	if (IS_ERR(lcd->mmio)) {
+		DRM_ERROR("failed to map control registers area\n");
+		ret = PTR_ERR(lcd->mmio);
+		lcd->mmio = NULL;
+		return ret;
+	}
+	/*TBD read and check for correct product version here */
+
+	/* Get the optional framebuffer memory resource */
+	ret = of_reserved_mem_device_init(drm->dev);
+	if (ret && ret != -ENODEV)
+		return ret;
+
+	ret = kmb_setup_crtc(drm);
+	if (ret < 0) {
+		DRM_ERROR("failed to create crtc\n");
+		goto setup_fail;
+	}
+
+	ret = drm_irq_install(drm, platform_get_irq(pdev, 0));
+	if (ret < 0) {
+		DRM_ERROR("failed to install IRQ handler\n");
+		goto irq_fail;
+	}
+
+	return 0;
+
+irq_fail:
+	drm_crtc_cleanup(&lcd->crtc);
+setup_fail:
+	of_reserved_mem_device_release(drm->dev);
+
+	return ret;
+}
+
+static const struct drm_mode_config_funcs kmb_mode_config_funcs = {
+	.fb_create = drm_gem_fb_create,
+	.atomic_check = drm_atomic_helper_check,
+	.atomic_commit = drm_atomic_helper_commit,
+};
+
+static void kmb_setup_mode_config(struct drm_device *drm)
+{
+	drm_mode_config_init(drm);
+	drm->mode_config.min_width = 0;
+	drm->mode_config.min_height = 0;
+	drm->mode_config.max_width = KMB_MAX_WIDTH;
+	drm->mode_config.max_height = KMB_MAX_HEIGHT;
+	drm->mode_config.funcs = &kmb_mode_config_funcs;
+}
+
+static irqreturn_t kmb_irq(int irq, void *arg)
+{
+	struct drm_device *dev = (struct drm_device *)arg;
+	struct kmb_drm_private *lcd = dev->dev_private;
+	unsigned long status, val;
+
+	status = kmb_read(lcd, LCD_INT_STATUS);
+	if (status & LCD_INT_EOF) {
+		/*To DO - handle EOF interrupt? */
+		kmb_write(lcd, LCD_INT_CLEAR, LCD_INT_EOF);
+	}
+	if (status & LCD_INT_LINE_CMP) {
+		/* clear line compare interrupt */
+		kmb_write(lcd, LCD_INT_CLEAR, LCD_INT_LINE_CMP);
+	}
+	if (status & LCD_INT_VERT_COMP) {
+		/* read VSTATUS */
+		val = kmb_read(lcd, LCD_VSTATUS);
+		/* BITS 13 and 14 */
+		val = (val & LCD_VSTATUS_VERTICAL_STATUS_MASK) >> 12;
+		switch (val) {
+		case LCD_VSTATUS_COMPARE_VSYNC:
+		case LCD_VSTATUS_COMPARE_BACKPORCH:
+		case LCD_VSTATUS_COMPARE_ACTIVE:
+		case LCD_VSTATUS_COMPARE_FRONT_PORCH:
+			/* clear vertical compare interrupt */
+			kmb_write(lcd, LCD_INT_CLEAR, LCD_INT_VERT_COMP);
+			drm_handle_vblank(dev, 0);
+			break;
+		}
+	}
+
+	return IRQ_HANDLED;
+}
+
+static void kmb_irq_reset(struct drm_device *drm)
+{
+	struct kmb_drm_private *lcd = drm->dev_private;
+
+	kmb_write(lcd, LCD_INT_CLEAR, 0xFFFF);
+	kmb_write(lcd, LCD_INT_ENABLE, 0);
+}
+
+DEFINE_DRM_GEM_CMA_FOPS(fops);
+
+static struct drm_driver kmb_driver = {
+	.driver_features = DRIVER_HAVE_IRQ | DRIVER_GEM |
+	    DRIVER_MODESET | DRIVER_ATOMIC,
+	.irq_handler = kmb_irq,
+	.irq_preinstall = kmb_irq_reset,
+	.irq_uninstall = kmb_irq_reset,
+	.gem_free_object_unlocked = drm_gem_cma_free_object,
+	.gem_vm_ops = &drm_gem_cma_vm_ops,
+	.dumb_create = drm_gem_cma_dumb_create,
+	.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
+	.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
+	.gem_prime_export = drm_gem_prime_export,
+	.gem_prime_import = drm_gem_prime_import,
+	.gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table,
+	.gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
+	.gem_prime_vmap = drm_gem_cma_prime_vmap,
+	.gem_prime_vunmap = drm_gem_cma_prime_vunmap,
+	.gem_prime_mmap = drm_gem_cma_prime_mmap,
+	.fops = &fops,
+	.name = "kmb",
+	.desc = "KEEMBAY DISPLAY DRIVER ",
+	.date = "20190122",
+	.major = 1,
+	.minor = 0,
+};
+
+static int kmb_drm_bind(struct device *dev)
+{
+	struct drm_device *drm;
+	struct kmb_drm_private *lcd;
+	int ret;
+
+	drm = drm_dev_alloc(&kmb_driver, dev);
+	if (IS_ERR(drm))
+		return PTR_ERR(drm);
+
+	lcd = devm_kzalloc(dev, sizeof(*lcd), GFP_KERNEL);
+	if (!lcd)
+		return -ENOMEM;
+
+	drm->dev_private = lcd;
+	dev_set_drvdata(dev, drm);
+
+	kmb_setup_mode_config(drm);
+	ret = kmb_load(drm, 0);
+	if (ret)
+		goto err_free;
+
+	/* Set the CRTC's port so that the encoder component can find it */
+	lcd->crtc.port = of_graph_get_port_by_id(dev->of_node, 0);
+
+	ret = component_bind_all(dev, drm);
+	if (ret) {
+		DRM_ERROR("Failed to bind all components\n");
+		goto err_unload;
+	}
+
+	ret = pm_runtime_set_active(dev);
+	if (ret)
+		goto err_pm_active;
+
+	pm_runtime_enable(dev);
+
+	ret = drm_vblank_init(drm, drm->mode_config.num_crtc);
+	if (ret < 0) {
+		DRM_ERROR("failed to initialise vblank\n");
+		goto err_vblank;
+	}
+
+	drm_mode_config_reset(drm);
+	drm_kms_helper_poll_init(drm);
+
+	ret = drm_dev_register(drm, 0);
+
+	lcd->n_layers = KMB_MAX_PLANES;
+	if (ret)
+		goto err_register;
+
+	return 0;
+
+err_register:
+	drm_kms_helper_poll_fini(drm);
+err_vblank:
+	pm_runtime_disable(drm->dev);
+err_pm_active:
+	component_unbind_all(dev, drm);
+err_unload:
+	of_node_put(lcd->crtc.port);
+	lcd->crtc.port = NULL;
+	drm_irq_uninstall(drm);
+	of_reserved_mem_device_release(drm->dev);
+err_free:
+	drm_mode_config_cleanup(drm);
+	dev_set_drvdata(dev, NULL);
+	drm_dev_put(drm);
+
+	return ret;
+}
+
+static void kmb_drm_unbind(struct device *dev)
+{
+	struct drm_device *drm = dev_get_drvdata(dev);
+	struct kmb_drm_private *lcd = drm->dev_private;
+
+	drm_dev_unregister(drm);
+	drm_kms_helper_poll_fini(drm);
+	component_unbind_all(dev, drm);
+	of_node_put(lcd->crtc.port);
+	lcd->crtc.port = NULL;
+	pm_runtime_get_sync(drm->dev);
+	drm_irq_uninstall(drm);
+	pm_runtime_put_sync(drm->dev);
+	pm_runtime_disable(drm->dev);
+	of_reserved_mem_device_release(drm->dev);
+	drm_mode_config_cleanup(drm);
+	drm_dev_put(drm);
+	drm->dev_private = NULL;
+	dev_set_drvdata(dev, NULL);
+}
+
+static const struct component_master_ops kmb_master_ops = {
+	.bind = kmb_drm_bind,
+	.unbind = kmb_drm_unbind,
+};
+
+static int compare_dev(struct device *dev, void *data)
+{
+	return dev->of_node == data;
+}
+
+static int kmb_probe(struct platform_device *pdev)
+{
+	struct device_node *port;
+	struct component_match *match = NULL;
+
+	/* there is only one output port inside each device, find it */
+	port = of_graph_get_remote_node(pdev->dev.of_node, 0, 0);
+	if (!port)
+		return -ENODEV;
+
+	drm_of_component_match_add(&pdev->dev, &match, compare_dev, port);
+	of_node_put(port);
+
+	return component_master_add_with_match(&pdev->dev, &kmb_master_ops,
+					       match);
+}
+
+static int kmb_remove(struct platform_device *pdev)
+{
+	component_master_del(&pdev->dev, &kmb_master_ops);
+	return 0;
+}
+
+static const struct of_device_id kmb_of_match[] = {
+	{.compatible = "lcd"},
+	{},
+};
+
+MODULE_DEVICE_TABLE(of, kmb_of_match);
+
+static int __maybe_unused kmb_pm_suspend(struct device *dev)
+{
+	struct drm_device *drm = dev_get_drvdata(dev);
+	struct kmb_drm_private *lcd = drm ? drm->dev_private : NULL;
+
+	if (!lcd)
+		return 0;
+
+	drm_kms_helper_poll_disable(drm);
+
+	lcd->state = drm_atomic_helper_suspend(drm);
+	if (IS_ERR(lcd->state)) {
+		drm_kms_helper_poll_enable(drm);
+		return PTR_ERR(lcd->state);
+	}
+
+	return 0;
+}
+
+static int __maybe_unused kmb_pm_resume(struct device *dev)
+{
+	struct drm_device *drm = dev_get_drvdata(dev);
+	struct kmb_drm_private *lcd = drm ? drm->dev_private : NULL;
+
+	if (!lcd)
+		return 0;
+
+	drm_atomic_helper_resume(drm, lcd->state);
+	drm_kms_helper_poll_enable(drm);
+
+	return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(kmb_pm_ops, kmb_pm_suspend, kmb_pm_resume);
+
+static struct platform_driver kmb_platform_driver = {
+	.probe = kmb_probe,
+	.remove = kmb_remove,
+	.driver = {
+		   .name = "Keembay_Display",
+		   .pm = &kmb_pm_ops,
+		   .of_match_table = kmb_of_match,
+		   },
+};
+
+module_platform_driver(kmb_platform_driver);
+
+MODULE_AUTHOR("Intel Corporation");
+MODULE_DESCRIPTION("Keembay Display driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/gpu/drm/kmb/kmb_drv.h b/drivers/gpu/drm/kmb/kmb_drv.h
new file mode 100644
index 0000000..05e9791
--- /dev/null
+++ b/drivers/gpu/drm/kmb/kmb_drv.h
@@ -0,0 +1,67 @@
+/* SPDX-License-Identifier: MIT
+ *
+ * Copyright © 2018 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ *
+ */
+#ifndef __KMB_DRV_H__
+#define __KMB_DRV_H__
+
+#define KMB_MAX_WIDTH			16384	/*max width in pixels */
+#define KMB_MAX_HEIGHT			16384	/*max height in pixels */
+
+struct kmb_drm_private {
+	struct drm_device drm;
+	void __iomem *mmio;
+	unsigned char n_layers;
+	struct clk *clk;
+	struct drm_fbdev_cma *fbdev;
+	struct drm_crtc crtc;
+	struct drm_plane *plane;
+	struct drm_atomic_state *state;
+};
+
+static inline struct kmb_drm_private *to_kmb(const struct drm_device *dev)
+{
+	return container_of(dev, struct kmb_drm_private, drm);
+}
+
+#define crtc_to_kmb_priv(x)	container_of(x, struct kmb_drm_private, crtc)
+
+struct blt_layer_config {
+	unsigned char layer_format;
+};
+
+static inline void kmb_write(struct kmb_drm_private *lcd,
+			     unsigned int reg, u32 value)
+{
+	writel(value, lcd->mmio + reg);
+}
+
+static inline u32 kmb_read(struct kmb_drm_private *lcd, unsigned int reg)
+{
+	return readl(lcd->mmio + reg);
+}
+
+int kmb_setup_crtc(struct drm_device *dev);
+void kmb_set_scanout(struct kmb_drm_private *lcd);
+#endif /* __KMB_DRV_H__ */
diff --git a/drivers/gpu/drm/kmb/kmb_plane.c b/drivers/gpu/drm/kmb/kmb_plane.c
new file mode 100644
index 0000000..9ab3873
--- /dev/null
+++ b/drivers/gpu/drm/kmb/kmb_plane.c
@@ -0,0 +1,252 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright © 2018 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ *
+ */
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_fb_helper.h>
+#include <drm/drm_fb_cma_helper.h>
+#include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_of.h>
+#include <drm/drm_plane_helper.h>
+#include <linux/clk.h>
+#include <linux/of_graph.h>
+#include <linux/platform_data/simplefb.h>
+#include <video/videomode.h>
+#include "kmb_plane.h"
+#include "kmb_crtc.h"
+#include "kmb_regs.h"
+#include "kmb_drv.h"
+
+static int kmb_plane_atomic_check(struct drm_plane *plane,
+				  struct drm_plane_state *state)
+{
+/* TBD below structure will be used for implementation later
+ *	struct drm_crtc_state *crtc_state;
+ */
+	/* TBD */
+	/* Plane based checking */
+
+	return 0;
+}
+
+static void kmb_plane_atomic_update(struct drm_plane *plane,
+				    struct drm_plane_state *state)
+{
+	struct drm_framebuffer *fb = plane->state->fb;
+	struct kmb_drm_private *lcd;
+	dma_addr_t addr;
+	unsigned int width;
+	unsigned int height;
+	unsigned int i;
+	unsigned int dma_len;
+	struct kmb_plane_state *kmb_state = to_kmb_plane_state(plane->state);
+	unsigned int dma_cfg;
+
+	if (!fb)
+		return;
+
+	lcd = plane->dev->dev_private;
+
+	/* TBD */
+	/*set LCD_LAYERn_WIDTH, LCD_LAYERn_HEIGHT, LCD_LAYERn_COL_START,
+	 * LCD_LAYERn_ROW_START, LCD_LAYERn_CFG
+	 * CFG should set the pixel format, FIFO level and BPP
+	 */
+
+	/* we may have to set LCD_DMA_VSTRIDE_ENABLE in the future */
+	dma_cfg = LCD_DMA_LAYER_ENABLE | LCD_DMA_LAYER_AUTO_UPDATE
+	    | LCD_DMA_LAYER_CONT_UPDATE | LCD_DMA_LAYER_AXI_BURST_1;
+
+	for (i = 0; i < kmb_state->no_planes; i++) {
+		/* disable DMA first */
+		kmb_write(lcd, LCD_LAYERn_DMA_CFG(i), ~LCD_DMA_LAYER_ENABLE);
+
+		addr = drm_fb_cma_get_gem_addr(fb, plane->state, i);
+		kmb_write(lcd, LCD_LAYERn_DMA_START_ADDR(i), addr);
+		kmb_write(lcd, LCD_LAYERn_DMA_START_SHADOW(i), addr);
+
+		width = fb->width;
+		height = fb->height;
+		dma_len = width * height * fb->format->cpp[i];
+		kmb_write(lcd, LCD_LAYERn_DMA_LEN(i), dma_len);
+
+		kmb_write(lcd, LCD_LAYERn_DMA_LINE_VSTRIDE(i), fb->pitches[0]);
+		kmb_write(lcd, LCD_LAYERn_DMA_LINE_WIDTH(i),
+			  (width * fb->format->cpp[i]));
+
+		/* enable DMA */
+		kmb_write(lcd, LCD_LAYERn_DMA_CFG(i), dma_cfg);
+	}
+}
+
+static const struct drm_plane_helper_funcs kmb_plane_helper_funcs = {
+	.atomic_check = kmb_plane_atomic_check,
+	.atomic_update = kmb_plane_atomic_update,
+};
+
+void kmb_plane_destroy(struct drm_plane *plane)
+{
+	drm_plane_cleanup(plane);
+}
+
+static void kmb_destroy_plane_state(struct drm_plane *plane,
+				    struct drm_plane_state *state)
+{
+	struct kmb_plane_state *kmb_state = to_kmb_plane_state(state);
+
+	__drm_atomic_helper_plane_destroy_state(state);
+	kfree(kmb_state);
+}
+
+struct drm_plane_state *kmb_plane_duplicate_state(struct drm_plane *plane)
+{
+	struct drm_plane_state *state;
+	struct kmb_plane_state *kmb_state;
+
+	kmb_state = kmemdup(plane->state, sizeof(*kmb_state), GFP_KERNEL);
+
+	if (!kmb_state)
+		return NULL;
+
+	state = &kmb_state->base_plane_state;
+	__drm_atomic_helper_plane_duplicate_state(plane, state);
+
+	return state;
+}
+
+static void kmb_plane_reset(struct drm_plane *plane)
+{
+	struct kmb_plane_state *kmb_state = to_kmb_plane_state(plane->state);
+
+	if (kmb_state)
+		__drm_atomic_helper_plane_destroy_state
+		    (&kmb_state->base_plane_state);
+	kfree(kmb_state);
+
+	plane->state = NULL;
+	kmb_state = kzalloc(sizeof(*kmb_state), GFP_KERNEL);
+	if (kmb_state) {
+		kmb_state->base_plane_state.plane = plane;
+		kmb_state->base_plane_state.rotation = DRM_MODE_ROTATE_0;
+		plane->state = &kmb_state->base_plane_state;
+		kmb_state->no_planes = KMB_MAX_PLANES;
+	}
+}
+
+static const struct drm_plane_funcs kmb_plane_funcs = {
+	.update_plane = drm_atomic_helper_update_plane,
+	.disable_plane = drm_atomic_helper_disable_plane,
+	.destroy = kmb_plane_destroy,
+	.reset = kmb_plane_reset,
+	.atomic_duplicate_state = kmb_plane_duplicate_state,
+	.atomic_destroy_state = kmb_destroy_plane_state,
+};
+
+/* graphics layer ( layers 2 & 3) formats, only packed formats  are supported*/
+static const u32 kmb_formats_g[] = {
+	DRM_FORMAT_RGB332,
+	DRM_FORMAT_XRGB4444, DRM_FORMAT_XBGR4444,
+	DRM_FORMAT_ARGB4444, DRM_FORMAT_ABGR4444,
+	DRM_FORMAT_XRGB1555, DRM_FORMAT_XBGR1555,
+	DRM_FORMAT_ARGB1555, DRM_FORMAT_ABGR1555,
+	DRM_FORMAT_RGB565, DRM_FORMAT_BGR565,
+	DRM_FORMAT_RGB888, DRM_FORMAT_BGR888,
+	DRM_FORMAT_XRGB8888, DRM_FORMAT_XBGR8888,
+	DRM_FORMAT_ARGB8888, DRM_FORMAT_ABGR8888,
+	DRM_FORMAT_XRGB2101010, DRM_FORMAT_XBGR2101010,
+	DRM_FORMAT_YUYV, DRM_FORMAT_YVYU,
+	DRM_FORMAT_UYVY, DRM_FORMAT_VYUY,
+};
+
+/* video layer (0 & 1) formats, packed and planar formats are supported */
+static const u32 kmb_formats_v[] = {
+	/* packed formats */
+	DRM_FORMAT_RGB332,
+	DRM_FORMAT_XRGB4444, DRM_FORMAT_XBGR4444,
+	DRM_FORMAT_ARGB4444, DRM_FORMAT_ABGR4444,
+	DRM_FORMAT_XRGB1555, DRM_FORMAT_XBGR1555,
+	DRM_FORMAT_ARGB1555, DRM_FORMAT_ABGR1555,
+	DRM_FORMAT_RGB565, DRM_FORMAT_BGR565,
+	DRM_FORMAT_RGB888, DRM_FORMAT_BGR888,
+	DRM_FORMAT_XRGB8888, DRM_FORMAT_XBGR8888,
+	DRM_FORMAT_ARGB8888, DRM_FORMAT_ABGR8888,
+	DRM_FORMAT_XRGB2101010, DRM_FORMAT_XBGR2101010,
+	DRM_FORMAT_YUYV, DRM_FORMAT_YVYU,
+	DRM_FORMAT_UYVY, DRM_FORMAT_VYUY,
+	/*planar formats */
+	DRM_FORMAT_YUV411, DRM_FORMAT_YVU411,
+	DRM_FORMAT_YUV420, DRM_FORMAT_YVU420,
+	DRM_FORMAT_YUV422, DRM_FORMAT_YVU422,
+	DRM_FORMAT_YUV444, DRM_FORMAT_YVU444,
+	DRM_FORMAT_NV12, DRM_FORMAT_NV21,
+};
+
+struct drm_plane *kmb_plane_init(struct drm_device *drm)
+{
+	struct kmb_drm_private *lcd = drm->dev_private;
+	struct drm_plane *plane = NULL;
+	struct drm_plane *primary = NULL;
+	int i = 0;
+	int ret;
+	enum drm_plane_type plane_type;
+	const uint32_t *plane_formats;
+	int num_plane_formats;
+
+	for (i = 0; i < lcd->n_layers; i++) {
+
+		plane = devm_kzalloc(drm->dev, sizeof(*plane), GFP_KERNEL);
+
+		if (!plane)
+			return ERR_PTR(-ENOMEM);
+
+		plane_type = (i == 0) ? DRM_PLANE_TYPE_PRIMARY :
+		    DRM_PLANE_TYPE_OVERLAY;
+		if (i < 2) {
+			plane_formats = kmb_formats_v;
+			num_plane_formats = ARRAY_SIZE(kmb_formats_v);
+		} else {
+			plane_formats = kmb_formats_g;
+			num_plane_formats = ARRAY_SIZE(kmb_formats_g);
+		}
+
+		ret = drm_universal_plane_init(drm, plane, 0xFF,
+				       &kmb_plane_funcs, plane_formats,
+				       num_plane_formats,
+				       NULL, plane_type, "plane %d", i);
+		if (ret < 0)
+			goto cleanup;
+
+		drm_plane_helper_add(plane, &kmb_plane_helper_funcs);
+		if (plane_type == DRM_PLANE_TYPE_PRIMARY) {
+			primary = plane;
+			lcd->plane = plane;
+		}
+	}
+
+cleanup:
+	return primary;
+}
diff --git a/drivers/gpu/drm/kmb/kmb_plane.h b/drivers/gpu/drm/kmb/kmb_plane.h
new file mode 100644
index 0000000..84c7113
--- /dev/null
+++ b/drivers/gpu/drm/kmb/kmb_plane.h
@@ -0,0 +1,52 @@
+/* SPDX-License-Identifier: MIT
+ *
+ * Copyright © 2018 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ *
+ */
+#ifndef __KMB_PLANE_H__
+#define __KMB_PLANE_H__
+
+#include "kmb_drv.h"
+
+#define KMB_MAX_PLANES	4
+
+/* this struct may be needed in the future
+ *struct kmb_plane {
+ *	struct drm_plane base_plane;
+ *	struct kmb_drm_private kmb_dev;
+ *};
+ */
+struct kmb_plane_state {
+	struct drm_plane_state base_plane_state;
+	unsigned char no_planes;
+};
+
+/* may be needed in the future
+ *#define to_kmb_plane(x) container_of(x, struct kmb_plane, base_plane)
+ */
+#define to_kmb_plane_state(x) \
+		container_of(x, struct kmb_plane_state, base_plane_state)
+
+struct drm_plane *kmb_plane_init(struct drm_device *drm);
+void kmb_plane_destroy(struct drm_plane *plane);
+#endif /* __KMB_PLANE_H__ */
diff --git a/drivers/gpu/drm/kmb/kmb_regs.h b/drivers/gpu/drm/kmb/kmb_regs.h
new file mode 100644
index 0000000..95cf932
--- /dev/null
+++ b/drivers/gpu/drm/kmb/kmb_regs.h
@@ -0,0 +1,460 @@
+/* SPDX-License-Identifier: MIT
+ *
+ * Copyright © 2018 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ *
+ */
+#ifndef __KMB_REGS_H__
+#define __KMB_REGS_H__
+
+/*LCD CONTROLLER REGISTERS */
+#define LCD_CONTROL			(0x4 * 0x000)
+#define LCD_INT_STATUS			(0x4 * 0x001)
+#define LCD_INT_ENABLE			(0x4 * 0x002)
+#define LCD_INT_CLEAR			(0x4 * 0x003)
+#define LCD_LINE_COUNT			(0x4 * 0x004)
+#define LCD_LINE_COMPARE		(0x4 * 0x005)
+#define LCD_VSTATUS			(0x4 * 0x006)
+#define LCD_VSTATUS_COMPARE		(0x4 * 0x007)
+#define LCD_SCREEN_WIDTH		(0x4 * 0x008)
+#define LCD_SCREEN_HEIGHT		(0x4 * 0x009)
+#define LCD_FIELD_INT_CFG		(0x4 * 0x00a)
+#define LCD_FIFO_FLUSH			(0x4 * 0x00b)
+#define LCD_BG_COLOUR_LS		(0x4 * 0x00c)
+#define LCD_BG_COLOUR_MS		(0x4 * 0x00d)
+#define LCD_RAM_CFG		        (0x4 * 0x00e)
+#define LCD_LAYER0_CFG		        (0x4 * 0x100)
+#define LCD_LAYERn_CFG(N)		(LCD_LAYER0_CFG + (0x400*N))
+#define LCD_LAYER0_COL_START		(0x4 * 0x101)
+#define LCD_LAYERn_COL_START(N)		(LCD_LAYER0_COL_START + (0x400*N))
+#define LCD_LAYER0_ROW_START		(0x4 * 0x102)
+#define LCD_LAYERn_ROW_START(N)		(LCD_LAYER0_ROW_START + (0x400*N))
+#define LCD_LAYER0_WIDTH	        (0x4 * 0x103)
+#define LCD_LAYERn_WIDTH(N)		(LCD_LAYER0_WIDTH + (0x400*N))
+#define LCD_LAYER0_HEIGHT		(0x4 * 0x104)
+#define LCD_LAYERn_HEIGHT(N)		(LCD_LAYER0_HEIGHT + (0x400*N))
+#define LCD_LAYER0_SCALE_CFG		(0x4 * 0x105)
+#define LCD_LAYERn_SCALE_CFG(N)		(LCD_LAYER0_SCALE_CFG + (0x400*N))
+#define LCD_LAYER0_ALPHA	        (0x4 * 0x106)
+#define LCD_LAYERn_ALPHA(N)		(LCD_LAYER0_ALPHA + (0x400*N))
+#define LCD_LAYER0_INV_COLOUR_LS	(0x4 * 0x107)
+#define LCD_LAYERn_INV_COLOUR_LS(N)	(LCD_LAYER0_INV_COLOUR_LS + (0x400*N))
+#define LCD_LAYER0_INV_COLOUR_MS	(0x4 * 0x108)
+#define LCD_LAYERn_INV_COLOUR_MS(N)	(LCD_LAYER0_INV_COLOUR_MS + (0x400*N))
+#define LCD_LAYER0_TRANS_COLOUR_LS	(0x4 * 0x109)
+#define LCD_LAYERn_TRANS_COLOUR_LS(N)	(LCD_LAYER0_TRANS_COLOUR_LS + (0x400*N))
+#define LCD_LAYER0_TRANS_COLOUR_MS	(0x4 * 0x10a)
+#define LCD_LAYERn_TRANS_COLOUR_MS(N)	(LCD_LAYER0_TRANS_COLOUR_MS + (0x400*N))
+#define LCD_LAYER0_CSC_COEFF11		(0x4 * 0x10b)
+#define LCD_LAYERn_CSC_COEFF11(N)	(LCD_LAYER0_CSC_COEFF11 + (0x400*N))
+#define LCD_LAYER0_CSC_COEFF12		(0x4 * 0x10c)
+#define LCD_LAYERn_CSC_COEFF12(N)	(LCD_LAYER0_CSC_COEFF12 + (0x400*N))
+#define LCD_LAYER0_CSC_COEFF13		(0x4 * 0x10d)
+#define LCD_LAYERn_CSC_COEFF13(N)	(LCD_LAYER0_CSC_COEFF13 + (0x400*N))
+#define LCD_LAYER0_CSC_COEFF21		(0x4 * 0x10e)
+#define LCD_LAYERn_CSC_COEFF21(N)	(LCD_LAYER0_CSC_COEFF21 + (0x400*N))
+#define LCD_LAYER0_CSC_COEFF22		(0x4 * 0x10f)
+#define LCD_LAYERn_CSC_COEFF22(N)	(LCD_LAYER0_CSC_COEFF22 + (0x400*N))
+#define LCD_LAYER0_CSC_COEFF23		(0x4 * 0x110)
+#define LCD_LAYERn_CSC_COEFF23(N)	(LCD_LAYER0_CSC_COEFF23 + (0x400*N))
+#define LCD_LAYER0_CSC_COEFF31		(0x4 * 0x111)
+#define LCD_LAYERn_CSC_COEFF31(N)	(LCD_LAYER0_CSC_COEFF31 + (0x400*N))
+#define LCD_LAYER0_CSC_COEFF32		(0x4 * 0x112)
+#define LCD_LAYERn_CSC_COEFF32(N)	  (LCD_LAYER0_CSC_COEFF32 + (0x400*N))
+#define LCD_LAYER0_CSC_COEFF33		(0x4 * 0x113)
+#define LCD_LAYERn_CSC_COEFF33(N)	(LCD_LAYER0_CSC_COEFF33 + (0x400*N))
+#define LCD_LAYER0_CSC_OFF1		(0x4 * 0x114)
+#define LCD_LAYERn_CSC_OFF1(N)		(LCD_LAYER0_CSC_OFF1 + (0x400*N))
+#define LCD_LAYER0_CSC_OFF2		(0x4 * 0x115)
+#define LCD_LAYERn_CSC_OFF2(N)		(LCD_LAYER0_CSC_OFF2 + (0x400*N))
+#define LCD_LAYER0_CSC_OFF3		(0x4 * 0x116)
+#define LCD_LAYERn_CSC_OFF3(N)		(LCD_LAYER0_CSC_OFF3 + (0x400*N))
+#define LCD_LAYER0_DMA_CFG		(0x4 * 0x117)
+#define LCD_LAYERn_DMA_CFG(N)		(LCD_LAYER0_DMA_CFG + (0x400*N))
+#define LCD_LAYER0_DMA_START_ADR	(0x4 * 0x118)
+#define LCD_LAYERn_DMA_START_ADDR(N)	(LCD_LAYER0_DMA_START_ADR + (0x400*N))
+#define LCD_LAYER0_DMA_START_SHADOW	(0x4 * 0x119)
+#define LCD_LAYERn_DMA_START_SHADOW(N)	(LCD_LAYER0_DMA_START_SHADOW + (0x400*N))
+#define LCD_LAYER0_DMA_LEN		(0x4 * 0x11a)
+#define LCD_LAYERn_DMA_LEN(N)		(LCD_LAYER0_DMA_LEN + (0x400*N))
+#define LCD_LAYER0_DMA_LEN_SHADOW	(0x4 * 0x11b)
+#define LCD_LAYERn_DMA_LEN_SHADOW(N)	(LCD_LAYER0_DMA_LEN_SHADOW + (0x400*N))
+#define LCD_LAYER0_DMA_STATUS		(0x4 * 0x11c)
+#define LCD_LAYERn_DMA_STATUS(N)	(LCD_LAYER0_DMA_STATUS + (0x400*N))
+#define LCD_LAYER0_DMA_LINE_WIDTH	(0x4 * 0x11d)
+#define LCD_LAYERn_DMA_LINE_WIDTH(N)	(LCD_LAYER0_DMA_LINE_WIDTH + (0x400*N))
+#define LCD_LAYER0_DMA_LINE_VSTRIDE	(0x4 * 0x11e)
+#define LCD_LAYERn_DMA_LINE_VSTRIDE(N)	(LCD_LAYER0_DMA_LINE_VSTRIDE + (0x400*N))
+#define LCD_LAYER0_DMA_FIFO_STATUS	(0x4 * 0x11f)
+#define LCD_LAYERn_DMA_FIFO_STATUS(N)	(LCD_LAYER0_DMA_FIFO_STATUS + (0x400*N))
+#define LCD_LAYER0_CFG2			(0x4 * 0x120)
+#define LCD_LAYERn_CFG2(N)		(LCD_LAYER0_CFG2 + (0x400*N))
+
+#define LCD_LAYER1_CFG			(0x4 * 0x200)
+#define LCD_LAYERn_CFG2(N)		(LCD_LAYER0_CFG2 + (0x400*N))
+#define LCD_LAYER1_COL_START		(0x4 * 0x201)
+#define LCD_LAYER1_ROW_START		(0x4 * 0x202)
+#define LCD_LAYER1_WIDTH		(0x4 * 0x203)
+#define LCD_LAYER1_HEIGHT		(0x4 * 0x204)
+#define LCD_LAYER1_SCALE_CFG		(0x4 * 0x205)
+#define LCD_LAYER1_ALPHA		(0x4 * 0x206)
+#define LCD_LAYER1_INV_COLOUR_LS	(0x4 * 0x207)
+#define LCD_LAYER1_INV_COLOUR_MS	(0x4 * 0x208)
+#define LCD_LAYER1_TRANS_COLOUR_LS	(0x4 * 0x209)
+#define LCD_LAYER1_TRANS_COLOUR_MS	(0x4 * 0x20a)
+#define LCD_LAYER1_CSC_COEFF11		(0x4 * 0x20b)
+#define LCD_LAYER1_CSC_COEFF12		(0x4 * 0x20c)
+#define LCD_LAYER1_CSC_COEFF13		(0x4 * 0x20d)
+#define LCD_LAYER1_CSC_COEFF21		(0x4 * 0x20e)
+#define LCD_LAYER1_CSC_COEFF22		(0x4 * 0x20f)
+#define LCD_LAYER1_CSC_COEFF23		(0x4 * 0x210)
+#define LCD_LAYER1_CSC_COEFF31		(0x4 * 0x211)
+#define LCD_LAYER1_CSC_COEFF32		(0x4 * 0x212)
+#define LCD_LAYER1_CSC_COEFF33		(0x4 * 0x213)
+#define LCD_LAYER1_CSC_OFF1		(0x4 * 0x214)
+#define LCD_LAYER1_CSC_OFF2		(0x4 * 0x215)
+#define LCD_LAYER1_CSC_OFF3		(0x4 * 0x216)
+#define LCD_LAYER1_DMA_CFG		(0x4 * 0x217)
+#define LCD_LAYER1_DMA_START_ADR	(0x4 * 0x218)
+#define LCD_LAYER1_DMA_START_SHADOW	(0x4 * 0x219)
+#define LCD_LAYER1_DMA_LEN		(0x4 * 0x21a)
+#define LCD_LAYER1_DMA_LEN_SHADOW	(0x4 * 0x21b)
+#define LCD_LAYER1_DMA_STATUS		(0x4 * 0x21c)
+#define LCD_LAYER1_DMA_LINE_WIDTH	(0x4 * 0x21d)
+#define LCD_LAYER1_DMA_LINE_VSTRIDE	(0x4 * 0x21e)
+#define LCD_LAYER1_DMA_FIFO_STATUS	(0x4 * 0x21f)
+#define LCD_LAYER1_CFG2			(0x4 * 0x220)
+#define LCD_LAYER2_CFG			(0x4 * 0x300)
+#define LCD_LAYER2_COL_START		(0x4 * 0x301)
+#define LCD_LAYER2_ROW_START		(0x4 * 0x302)
+#define LCD_LAYER2_WIDTH		(0x4 * 0x303)
+#define LCD_LAYER2_HEIGHT		(0x4 * 0x304)
+#define LCD_LAYER2_SCALE_CFG		(0x4 * 0x305)
+#define LCD_LAYER2_ALPHA		(0x4 * 0x306)
+#define LCD_LAYER2_INV_COLOUR_LS	(0x4 * 0x307)
+#define LCD_LAYER2_INV_COLOUR_MS	(0x4 * 0x308)
+#define LCD_LAYER2_TRANS_COLOUR_LS	(0x4 * 0x309)
+#define LCD_LAYER2_TRANS_COLOUR_MS	(0x4 * 0x30a)
+#define LCD_LAYER2_CSC_COEFF11		(0x4 * 0x30b)
+#define LCD_LAYER2_CSC_COEFF12		(0x4 * 0x30c)
+#define LCD_LAYER2_CSC_COEFF13		(0x4 * 0x30d)
+#define LCD_LAYER2_CSC_COEFF21		(0x4 * 0x30e)
+#define LCD_LAYER2_CSC_COEFF22		(0x4 * 0x30f)
+#define LCD_LAYER2_CSC_COEFF23		(0x4 * 0x310)
+#define LCD_LAYER2_CSC_COEFF31		(0x4 * 0x311)
+#define LCD_LAYER2_CSC_COEFF32		(0x4 * 0x312)
+#define LCD_LAYER2_CSC_COEFF33		(0x4 * 0x313)
+#define LCD_LAYER2_CSC_OFF1		(0x4 * 0x314)
+#define LCD_LAYER2_CSC_OFF2		(0x4 * 0x315)
+#define LCD_LAYER2_CSC_OFF3		(0x4 * 0x316)
+#define LCD_LAYER2_DMA_CFG		(0x4 * 0x317)
+#define LCD_LAYER2_DMA_START_ADR	(0x4 * 0x318)
+#define LCD_LAYER2_DMA_START_SHADOW	(0x4 * 0x319)
+#define LCD_LAYER2_DMA_LEN		(0x4 * 0x31a)
+#define LCD_LAYER2_DMA_LEN_SHADOW	(0x4 * 0x31b)
+#define LCD_LAYER2_DMA_STATUS		(0x4 * 0x31c)
+#define LCD_LAYER2_DMA_LINE_WIDTH	(0x4 * 0x31d)
+#define LCD_LAYER2_DMA_LINE_VSTRIDE	(0x4 * 0x31e)
+#define LCD_LAYER2_DMA_FIFO_STATUS	(0x4 * 0x31f)
+#define LCD_LAYER2_CFG2			(0x4 * 0x320)
+#define LCD_LAYER3_CFG			(0x4 * 0x400)
+#define LCD_LAYER3_COL_START		(0x4 * 0x401)
+#define LCD_LAYER3_ROW_START		(0x4 * 0x402)
+#define LCD_LAYER3_WIDTH		(0x4 * 0x403)
+#define LCD_LAYER3_HEIGHT		(0x4 * 0x404)
+#define LCD_LAYER3_SCALE_CFG		(0x4 * 0x405)
+#define LCD_LAYER3_ALPHA		(0x4 * 0x406)
+#define LCD_LAYER3_INV_COLOUR_LS	(0x4 * 0x407)
+#define LCD_LAYER3_INV_COLOUR_MS	(0x4 * 0x408)
+#define LCD_LAYER3_TRANS_COLOUR_LS	(0x4 * 0x409)
+#define LCD_LAYER3_TRANS_COLOUR_MS	(0x4 * 0x40a)
+#define LCD_LAYER3_CSC_COEFF11		(0x4 * 0x40b)
+#define LCD_LAYER3_CSC_COEFF12		(0x4 * 0x40c)
+#define LCD_LAYER3_CSC_COEFF13		(0x4 * 0x40d)
+#define LCD_LAYER3_CSC_COEFF21		(0x4 * 0x40e)
+#define LCD_LAYER3_CSC_COEFF22		(0x4 * 0x40f)
+#define LCD_LAYER3_CSC_COEFF23		(0x4 * 0x410)
+#define LCD_LAYER3_CSC_COEFF31		(0x4 * 0x411)
+#define LCD_LAYER3_CSC_COEFF32		(0x4 * 0x412)
+#define LCD_LAYER3_CSC_COEFF33		(0x4 * 0x413)
+#define LCD_LAYER3_CSC_OFF1		(0x4 * 0x414)
+#define LCD_LAYER3_CSC_OFF2		(0x4 * 0x415)
+#define LCD_LAYER3_CSC_OFF3		(0x4 * 0x416)
+#define LCD_LAYER3_DMA_CFG		(0x4 * 0x417)
+#define LCD_LAYER3_DMA_START_ADR	(0x4 * 0x418)
+#define LCD_LAYER3_DMA_START_SHADOW	(0x4 * 0x419)
+#define LCD_LAYER3_DMA_LEN		(0x4 * 0x41a)
+#define LCD_LAYER3_DMA_LEN_SHADOW	(0x4 * 0x41b)
+#define LCD_LAYER3_DMA_STATUS		(0x4 * 0x41c)
+#define LCD_LAYER3_DMA_LINE_WIDTH	(0x4 * 0x41d)
+#define LCD_LAYER3_DMA_LINE_VSTRIDE	(0x4 * 0x41e)
+#define LCD_LAYER3_DMA_FIFO_STATUS	(0x4 * 0x41f)
+#define LCD_LAYER3_CFG2			(0x4 * 0x420)
+#define LCD_LAYER2_CLUT0		(0x4 * 0x500)
+#define LCD_LAYER2_CLUT1		(0x4 * 0x501)
+#define LCD_LAYER2_CLUT2		(0x4 * 0x502)
+#define LCD_LAYER2_CLUT3		(0x4 * 0x503)
+#define LCD_LAYER2_CLUT4		(0x4 * 0x504)
+#define LCD_LAYER2_CLUT5		(0x4 * 0x505)
+#define LCD_LAYER2_CLUT6		(0x4 * 0x506)
+#define LCD_LAYER2_CLUT7		(0x4 * 0x507)
+#define LCD_LAYER2_CLUT8		(0x4 * 0x508)
+#define LCD_LAYER2_CLUT9		(0x4 * 0x509)
+#define LCD_LAYER2_CLUT10		(0x4 * 0x50a)
+#define LCD_LAYER2_CLUT11		(0x4 * 0x50b)
+#define LCD_LAYER2_CLUT12		(0x4 * 0x50c)
+#define LCD_LAYER2_CLUT13		(0x4 * 0x50d)
+#define LCD_LAYER2_CLUT14		(0x4 * 0x50e)
+#define LCD_LAYER2_CLUT15		(0x4 * 0x50f)
+#define LCD_LAYER3_CLUT0		(0x4 * 0x600)
+#define LCD_LAYER3_CLUT1		(0x4 * 0x601)
+#define LCD_LAYER3_CLUT2		(0x4 * 0x602)
+#define LCD_LAYER3_CLUT3		(0x4 * 0x603)
+#define LCD_LAYER3_CLUT4		(0x4 * 0x604)
+#define LCD_LAYER3_CLUT5		(0x4 * 0x605)
+#define LCD_LAYER3_CLUT6		(0x4 * 0x606)
+#define LCD_LAYER3_CLUT7		(0x4 * 0x607)
+#define LCD_LAYER3_CLUT8		(0x4 * 0x608)
+#define LCD_LAYER3_CLUT9		(0x4 * 0x609)
+#define LCD_LAYER3_CLUT10		(0x4 * 0x60a)
+#define LCD_LAYER3_CLUT11		(0x4 * 0x60b)
+#define LCD_LAYER3_CLUT12		(0x4 * 0x60c)
+#define LCD_LAYER3_CLUT13		(0x4 * 0x60d)
+#define LCD_LAYER3_CLUT14		(0x4 * 0x60e)
+#define LCD_LAYER3_CLUT15		(0x4 * 0x60f)
+#define LCD_LAYER0_DMA_START_CB_ADR	(0x4 * 0x700)
+#define LCD_LAYER0_DMA_START_CB_SHADOW	(0x4 * 0x701)
+#define LCD_LAYER0_DMA_CB_LINE_WIDTH	(0x4 * 0x702)
+#define LCD_LAYER0_DMA_CB_LINE_VSTRIDE	(0x4 * 0x703)
+#define LCD_LAYER0_DMA_START_CR_ADR	(0x4 * 0x704)
+#define LCD_LAYER0_DMA_START_CR_SHADOW	(0x4 * 0x705)
+#define LCD_LAYER0_DMA_CR_LINE_WIDTH	(0x4 * 0x706)
+#define LCD_LAYER0_DMA_CR_LINE_VSTRIDE	(0x4 * 0x707)
+#define LCD_LAYER1_DMA_START_CB_ADR	(0x4 * 0x708)
+#define LCD_LAYER1_DMA_START_CB_SHADOW	(0x4 * 0x709)
+#define LCD_LAYER1_DMA_CB_LINE_WIDTH	(0x4 * 0x70a)
+#define LCD_LAYER1_DMA_CB_LINE_VSTRIDE	(0x4 * 0x70b)
+#define LCD_LAYER1_DMA_START_CR_ADR	(0x4 * 0x70c)
+#define LCD_LAYER1_DMA_START_CR_SHADOW	(0x4 * 0x70d)
+#define LCD_LAYER1_DMA_CR_LINE_WIDTH	(0x4 * 0x70e)
+#define LCD_LAYER1_DMA_CR_LINE_VSTRIDE	(0x4 * 0x70f)
+#define LCD_OUT_FORMAT_CFG		(0x4 * 0x800)
+#define LCD_HSYNC_WIDTH			(0x4 * 0x801)
+#define LCD_H_BACKPORCH			(0x4 * 0x802)
+#define LCD_H_ACTIVEWIDTH		(0x4 * 0x803)
+#define LCD_H_FRONTPORCH		(0x4 * 0x804)
+#define LCD_VSYNC_WIDTH			(0x4 * 0x805)
+#define LCD_V_BACKPORCH			(0x4 * 0x806)
+#define LCD_V_ACTIVEHEIGHT		(0x4 * 0x807)
+#define LCD_V_FRONTPORCH		(0x4 * 0x808)
+#define LCD_VSYNC_START			(0x4 * 0x809)
+#define LCD_VSYNC_END			(0x4 * 0x80a)
+#define LCD_V_BACKPORCH_EVEN		(0x4 * 0x80b)
+#define LCD_VSYNC_WIDTH_EVEN		(0x4 * 0x80c)
+#define LCD_V_ACTIVEHEIGHT_EVEN		(0x4 * 0x80d)
+#define LCD_V_FRONTPORCH_EVEN		(0x4 * 0x80e)
+#define LCD_VSYNC_START_EVEN		(0x4 * 0x80f)
+#define LCD_VSYNC_END_EVEN		(0x4 * 0x810)
+#define LCD_TIMING_GEN_TRIG		(0x4 * 0x811)
+#define LCD_PWM0_CTRL			(0x4 * 0x812)
+#define LCD_PWM0_RPT_LEADIN		(0x4 * 0x813)
+#define LCD_PWM0_HIGH_LOW		(0x4 * 0x814)
+#define LCD_PWM1_CTRL			(0x4 * 0x815)
+#define LCD_PWM1_RPT_LEADIN		(0x4 * 0x816)
+#define LCD_PWM1_HIGH_LOW		(0x4 * 0x817)
+#define LCD_PWM2_CTRL			(0x4 * 0x818)
+#define LCD_PWM2_RPT_LEADIN		(0x4 * 0x819)
+#define LCD_PWM2_HIGH_LOW		(0x4 * 0x81a)
+#define LCD_VIDEO0_DMA0_BYTES		(0x4 * 0xb00)
+#define LCD_VIDEO0_DMA0_STATE		(0x4 * 0xb01)
+#define LCD_VIDEO0_DMA1_BYTES		(0x4 * 0xb02)
+#define LCD_VIDEO0_DMA1_STATE		(0x4 * 0xb03)
+#define LCD_VIDEO0_DMA2_BYTES		(0x4 * 0xb04)
+#define LCD_VIDEO0_DMA2_STATE		(0x4 * 0xb05)
+#define LCD_VIDEO1_DMA0_BYTES		(0x4 * 0xb06)
+#define LCD_VIDEO1_DMA0_STATE		(0x4 * 0xb07)
+#define LCD_VIDEO1_DMA1_BYTES		(0x4 * 0xb08)
+#define LCD_VIDEO1_DMA1_STATE		(0x4 * 0xb09)
+#define LCD_VIDEO1_DMA2_BYTES		(0x4 * 0xb0a)
+#define LCD_VIDEO1_DMA2_STATE		(0x4 * 0xb0b)
+#define LCD_GRAPHIC0_DMA_BYTES		(0x4 * 0xb0c)
+#define LCD_GRAPHIC0_DMA_STATE		(0x4 * 0xb0d)
+#define LCD_GRAPHIC1_DMA_BYTES		(0x4 * 0xb0e)
+#define LCD_GRAPHIC1_DMA_STATE		(0x4 * 0xb0f)
+
+#define LAYER3_DMA_FIFO_UNDERFLOW_BIT		(1<<26)
+#define LAYER3_DMA_OVERFLOW_BIT			(1<<25)
+#define LAYER3_DMA_IDLE_BIT			(1<<24)
+#define LAYER3_DMA_DONE_BIT			(1<<23)
+
+#define LAYER2_DMA_FIFO_UNDERFLOW_BIT		(1<<22)
+#define LAYER2_DMA_OVERFLOW_BIT			(1<<21)
+#define LAYER2_DMA_IDLE_BIT			(1<<20)
+#define LAYER2_DMA_DONE_BIT			(1<<19)
+
+#define LAYER1_DMA_CR_FIFO_UNDERFLOW_BIT	(1<<18)
+#define LAYER1_DMA_CR_FIFO_OVERFLOW_BIT		(1<<17)
+#define LAYER1_DMA_CB_FIFO_UNDERFLOW_BIT	(1<<16)
+#define LAYER1_DMA_CB_FIFO_OVERFLOW_BIT		(1<<15)
+
+#define LAYER1_DMA_FIFO_UNDERFLOW_BIT		(1<<14)
+#define LAYER1_DMA_OVERFLOW_BIT			(1<<13)
+#define LAYER1_DMA_IDLE_BIT			(1<<12)
+#define LAYER1_DMA_DONE_BIT			(1<<11)
+
+#define LAYER0_DMA_CR_FIFO_UNDERFLOW_BIT	(1<<10)
+#define LAYER0_DMA_CR_FIFO_OVERFLOW_BIT		(1<<9)
+#define LAYER0_DMA_CB_FIFO_UNDERFLOW_BIT	(1<<8)
+#define LAYER0_DMA_CB_FIFO_OVERFLOW_BIT		(1<<7)
+
+#define LAYER0_DMA_FIFO_UNDEFLOW_BIT		(1<<6)
+#define LAYER0_DMA_OVERFLOW_BIT			(1<<5)
+#define LAYER0_DMA_IDLE_BIT			(1<<4)
+#define LAYER0_DMA_DONE_BIT			(1<<3)
+
+#define  BLT_VIDEOn_DMAm_STATE			0x00
+#define  BLT_VIDEOn_DMAm_BYTES			0x00
+#define  BLT_RAM_CFG				0x00
+
+#define  BLT_LAYERn_WIDTH(N)			(0x40C + (0x400*N))
+#define  BLT_LAYERn_HEIGHT_OFFSET(N)		(0x410 + (0x400*N))
+
+#define  BLT_LAYERn_TRANS_COLOUR_MS		0x0
+#define  BLT_LAYERn_TRANS_COLOUR_LS		0x0
+#define  BLT_LAYERn_SCALE_CFG			0x0
+#define  BLT_LAYERn_ROW_START			0x0
+#define  BLT_LAYERn_INV_COLOUR_MS		0x0
+#define  BLT_LAYERn_INV_COLOUR_LS		0x0
+
+/*  LCD controller Layer DMA config register */
+
+/* bit 0 default is disabled */
+#define LCD_DMA_LAYER_ENABLE			(0x001)
+/* bit 1 this should be used only as a mask when reading the status from
+ * the DMA CFG register
+ */
+#define LCD_DMA_LAYER_STATUS			(0x002)
+/* bit 2 */
+#define LCD_DMA_LAYER_AUTO_UPDATE		(0x004)
+/* bit 3 */
+#define LCD_DMA_LAYER_CONT_UPDATE		(0x008)
+/* bit 2 + bit 3 */
+#define LCD_DMA_LAYER_CONT_PING_PONG_UPDATE	(0x00C)
+/* bit 4 set FIFO addressing mode, default is increment after each burst */
+#define LCD_DMA_LAYER_FIFO_ADR_MODE		(0x010)
+/* bit 5:9 default axi burst is 1 */
+#define LCD_DMA_LAYER_AXI_BURST_1		(0x020)
+#define LCD_DMA_LAYER_AXI_BURST_2		(0x040)
+#define LCD_DMA_LAYER_AXI_BURST_3		(0x060)
+#define LCD_DMA_LAYER_AXI_BURST_4		(0x080)
+#define LCD_DMA_LAYER_AXI_BURST_5		(0x0A0)
+#define LCD_DMA_LAYER_AXI_BURST_6		(0x0C0)
+#define LCD_DMA_LAYER_AXI_BURST_7		(0x0E0)
+#define LCD_DMA_LAYER_AXI_BURST_8		(0x100)
+#define LCD_DMA_LAYER_AXI_BURST_9		(0x120)
+#define LCD_DMA_LAYER_AXI_BURST_10		(0x140)
+#define LCD_DMA_LAYER_AXI_BURST_11		(0x160)
+#define LCD_DMA_LAYER_AXI_BURST_12		(0x180)
+#define LCD_DMA_LAYER_AXI_BURST_13		(0x1A0)
+#define LCD_DMA_LAYER_AXI_BURST_14		(0x1C0)
+#define LCD_DMA_LAYER_AXI_BURST_15		(0x1E0)
+#define LCD_DMA_LAYER_AXI_BURST_16		(0x200)
+/* bit 10 */
+#define LCD_DMA_LAYER_V_STRIDE_EN		(0x400)
+
+/* **************************************************************************
+ *			LCD controller control register defines
+ ****************************************************************************
+ */
+/* --- bit 0 */
+#define LCD_CTRL_PROGRESSIVE		(0x00)	/* default */
+#define LCD_CTRL_INTERLACED		(0x01)
+/* --- bit 1 */
+#define LCD_CTRL_ENABLE			(0x02)	/* enable conrtoller */
+/* --- bits 2,3,4,5 */
+#define LCD_CTRL_VL1_ENABLE		(0x04)	/* enable video layer 1 */
+#define LCD_CTRL_VL2_ENABLE		(0x08)	/* enable  video layer 2 */
+#define LCD_CTRL_GL1_ENABLE		(0x10)	/* enable  graphics layer 1 */
+#define LCD_CTRL_GL2_ENABLE		(0x20)	/* enable  graphics layer 2 */
+/* --- bits 6:7 */
+#define LCD_CTRL_ALPHA_BLEND_VL1	(0x00)	/* video layer 1 - default */
+#define LCD_CTRL_ALPHA_BLEND_VL2	(0x40)	/* video layer 2 */
+#define LCD_CTRL_ALPHA_BLEND_GL1	(0x80)	/* graphics layer 1 */
+#define LCD_CTRL_ALPHA_BLEND_GL2	(0xC0)	/* graphics layer 2 */
+/* --- bits 8:9 */
+#define LCD_CTRL_ALPHA_TOP_VL1		(0x000)	/* video layer 1 - default */
+#define LCD_CTRL_ALPHA_TOP_VL2		(0x100)	/* video layer 2 */
+#define LCD_CTRL_ALPHA_TOP_GL1		(0x200)	/* graphics layer 1 */
+#define LCD_CTRL_ALPHA_TOP_GL2		(0x300)	/* graphics layer 2 */
+/* --- bits 10:11 */
+#define LCD_CTRL_ALPHA_MIDDLE_VL1	(0x000)	/* video layer 1 - default */
+#define LCD_CTRL_ALPHA_MIDDLE_VL2	(0x400)	/* video layer 2 */
+#define LCD_CTRL_ALPHA_MIDDLE_GL1	(0x800)	/* graphics layer 1 */
+#define LCD_CTRL_ALPHA_MIDDLE_GL2	(0xC00)	/* graphics layer 2 */
+/* --- bits 12:13 */
+#define LCD_CTRL_ALPHA_BOTTOM_VL1	(0x0000)	/* video layer 1 */
+#define LCD_CTRL_ALPHA_BOTTOM_VL2	(0x1000)	/* video layer 2 */
+#define LCD_CTRL_ALPHA_BOTTOM_GL1	(0x2000)	/* graphics layer 1 */
+#define LCD_CTRL_ALPHA_BOTTOM_GL2	(0x3000)	/* graphics layer 2 */
+/* --- bit 14 */
+#define LCD_CTRL_TIM_GEN_ENABLE		(0x4000)	/* timing generator */
+/* --- bit 15 */
+#define LCD_CTRL_DISPLAY_MODE_ONE_SHOT	(0x8000)	/* default continuous */
+/* --- bits 16, 17, 18 */
+#define LCD_CTRL_PWM0_EN		(0x10000)	/* enable PWM 0 */
+#define LCD_CTRL_PWM1_EN		(0x20000)	/* enable PWM 1 */
+#define LCD_CTRL_PWM2_EN		(0x40000)	/* enable PWM 2 */
+/* --- bits 19:20 */
+#define LCD_CTRL_OUTPUT_DISABLED	(0x000000)	/* output disabled */
+#define LCD_CTRL_OUTPUT_ENABLED		(0x080000)
+/* --- bit 21 */
+#define LCD_CTRL_SHARP_TFT		(0x200000)
+/* = bit 21 VSYNC BACK PORCH LEVEL */
+#define LCD_CTRL_BPORCH_ENABLE		(0x00200000)
+/* = bit 22 VSYNC FRONT PORCH LEVEL */
+#define LCD_CTRL_FPORCH_ENABLE		(0x00400000)
+/* = bit 28 enable pipelined (outstanding) DMA reads */
+#define LCD_CTRL_PIPELINE_DMA		(0x10000000)
+
+/* LCD Control register bit fields */
+
+#define EIGHT_BITS			 8
+#define SIXTEEN_BITS			 8
+#define TWENTY_FOUR_BITS		 8
+#define THIRT_TWO_BITS			 8
+
+#define ENABLE				 1
+/*LCD_VSTATUS_COMPARE Vertcal interval in which to generate vertcal
+ * interval interrupt
+ */
+#define LCD_VSTATUS_VERTICAL_STATUS_MASK	 0x60	/* BITS 13 and 14 */
+#define LCD_VSTATUS_COMPARE_VSYNC		 0x00
+#define LCD_VSTATUS_COMPARE_BACKPORCH		 0x01
+#define LCD_VSTATUS_COMPARE_ACTIVE		 0x10
+#define LCD_VSTATUS_COMPARE_FRONT_PORCH		 0x11
+
+/*interrupt bits */
+#define LCD_INT_VERT_COMP			 (1 << 2)
+#define LCD_INT_LINE_CMP			 (1 << 1)
+#define LCD_INT_EOF				 (1 << 0)
+
+#endif /* __KMB_REGS_H__ */