[v3,1/5] drm/rockchip: Add basic drm driver
diff mbox

Message ID 1411105668-32722-2-git-send-email-mark.yao@rock-chips.com
State New, archived
Headers show

Commit Message

yao mark Sept. 19, 2014, 5:47 a.m. UTC
This patch adds the basic structure of a DRM Driver for Rockchip Socs.

Signed-off-by: Mark yao <mark.yao@rock-chips.com>
---
Changes in v2:
- use the component framework to defer main drm driver probe
  until all VOP devices have been probed.
- use dma-mapping API with ARM_DMA_USE_IOMMU, create dma mapping by
  master device and each vop device can shared the drm dma mapping.
- use drm_crtc_init_with_planes and drm_universal_plane_init.
- remove unnecessary middle layers.
- add cursor set, move funcs to rockchip drm crtc.
- use vop reset at first init
- reference framebuffer when used and unreference when swap out vop

Changes in v3:
- change "crtc->fb" to "crtc->primary-fb"
Adviced by Daniel Vetter
- init cursor plane with universal api, remove unnecessary cursor set,move 

 drivers/gpu/drm/Kconfig                       |    2 +
 drivers/gpu/drm/Makefile                      |    1 +
 drivers/gpu/drm/rockchip/Kconfig              |   19 +
 drivers/gpu/drm/rockchip/Makefile             |   10 +
 drivers/gpu/drm/rockchip/rockchip_drm_drv.c   |  502 +++++++++
 drivers/gpu/drm/rockchip/rockchip_drm_drv.h   |  120 +++
 drivers/gpu/drm/rockchip/rockchip_drm_fb.c    |  201 ++++
 drivers/gpu/drm/rockchip/rockchip_drm_fb.h    |   28 +
 drivers/gpu/drm/rockchip/rockchip_drm_fbdev.c |  231 +++++
 drivers/gpu/drm/rockchip/rockchip_drm_fbdev.h |   20 +
 drivers/gpu/drm/rockchip/rockchip_drm_gem.c   |  405 ++++++++
 drivers/gpu/drm/rockchip/rockchip_drm_gem.h   |   76 ++
 drivers/gpu/drm/rockchip/rockchip_drm_vop.c   | 1372 +++++++++++++++++++++++++
 drivers/gpu/drm/rockchip/rockchip_drm_vop.h   |  187 ++++
 include/uapi/drm/rockchip_drm.h               |   97 ++
 15 files changed, 3271 insertions(+)
 create mode 100644 drivers/gpu/drm/rockchip/Kconfig
 create mode 100644 drivers/gpu/drm/rockchip/Makefile
 create mode 100644 drivers/gpu/drm/rockchip/rockchip_drm_drv.c
 create mode 100644 drivers/gpu/drm/rockchip/rockchip_drm_drv.h
 create mode 100644 drivers/gpu/drm/rockchip/rockchip_drm_fb.c
 create mode 100644 drivers/gpu/drm/rockchip/rockchip_drm_fb.h
 create mode 100644 drivers/gpu/drm/rockchip/rockchip_drm_fbdev.c
 create mode 100644 drivers/gpu/drm/rockchip/rockchip_drm_fbdev.h
 create mode 100644 drivers/gpu/drm/rockchip/rockchip_drm_gem.c
 create mode 100644 drivers/gpu/drm/rockchip/rockchip_drm_gem.h
 create mode 100644 drivers/gpu/drm/rockchip/rockchip_drm_vop.c
 create mode 100644 drivers/gpu/drm/rockchip/rockchip_drm_vop.h
 create mode 100644 include/uapi/drm/rockchip_drm.h

Comments

David Herrmann Sept. 19, 2014, 1:04 p.m. UTC | #1
Hi

On Fri, Sep 19, 2014 at 7:47 AM, Mark yao <mark.yao@rock-chips.com> wrote:
[snip]
> +static int rockchip_drm_bind(struct device *dev)
> +{
> +       return drm_platform_init(&rockchip_drm_driver, to_platform_device(dev));

Please avoid drm_platform_*() usage. We're about to drop all the
drm_bus midlayers. See the tegra driver how to do it, but basically
just this:

struct drm_device *ddev;

ddev = drm_dev_alloc(&rockchip_drm_driver, &to_platform_device(dev)->dev);
if (!ddev)
        return -ENOMEM;

r = drm_dev_set_unique(ddev, dev_name(&ddev->dev));
if (r < 0) {
        drm_dev_unref(ddev);
        return r;
}

r = drm_dev_register(ddev);
if (r < 0) {
        drm_dev_unref(ddev);
        return r;
}

> +}
> +
> +static void rockchip_drm_unbind(struct device *dev)
> +{
> +       drm_put_dev(dev_get_drvdata(dev));

Please use:

struct drm_device *ddev = dev_get_drvdata(dev);

drm_dev_unregister(ddev);
drm_dev_unref(ddev);


Thanks
David
Rob Clark Sept. 20, 2014, 12:03 a.m. UTC | #2
On Fri, Sep 19, 2014 at 1:47 AM, Mark yao <mark.yao@rock-chips.com> wrote:
> diff --git a/include/uapi/drm/rockchip_drm.h b/include/uapi/drm/rockchip_drm.h
> new file mode 100644
> index 0000000..8f8e60e
> --- /dev/null
> +++ b/include/uapi/drm/rockchip_drm.h
> @@ -0,0 +1,97 @@
> +/*
> + *
> + * Copyright (c) Fuzhou Rockchip Electronics Co.Ltd
> + * Authors:
> + *       Mark Yao <yzq@rock-chips.com>
> + *
> + * base on exynos_drm.h
> + *
> + * 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 _UAPI_ROCKCHIP_DRM_H
> +#define _UAPI_ROCKCHIP_DRM_H
> +
> +#include <drm/drm.h>
> +
> +/**
> + * User-desired buffer creation information structure.
> + *
> + * @size: user-desired memory allocation size.
> + * @flags: user request for setting memory type or cache attributes.
> + * @handle: returned a handle to created gem object.
> + *     - this handle will be set by gem module of kernel side.
> + */
> +struct drm_rockchip_gem_create {
> +       uint64_t size;
> +       uint32_t flags;
> +       uint32_t handle;
> +};
> +
> +/**
> + * A structure for getting buffer offset.
> + *
> + * @handle: a pointer to gem object created.
> + * @pad: just padding to be 64-bit aligned.
> + * @offset: relatived offset value of the memory region allocated.
> + *     - this value should be set by user.
> + */
> +struct drm_rockchip_gem_map_off {
> +       uint32_t handle;
> +       uint32_t pad;
> +       uint64_t offset;
> +};
> +
> +/**
> + * A structure for mapping buffer.
> + *
> + * @handle: a handle to gem object created.
> + * @pad: just padding to be 64-bit aligned.
> + * @size: memory size to be mapped.
> + * @mapped: having user virtual address mmaped.
> + *      - this variable would be filled by rockchip gem module
> + *      of kernel side with user virtual address which is allocated
> + *      by do_mmap().
> + */
> +struct drm_rockchip_gem_mmap {
> +       uint32_t handle;
> +       uint32_t pad;
> +       uint64_t size;
> +       uint64_t mapped;
> +};

Could we do without the mmap ioctl?  It has been a source of problems
in other drivers, and the ioctl to get mmap offset, plus normal mmap()
on drm device file should be sufficient

BR,
-R


> +/**
> + * A structure to gem information.
> + *
> + * @handle: a handle to gem object created.
> + * @flags: flag value including memory type and cache attribute and
> + *      this value would be set by driver.
> + * @size: size to memory region allocated by gem and this size would
> + *      be set by driver.
> + */
> +struct drm_rockchip_gem_info {
> +       uint32_t handle;
> +       uint32_t flags;
> +       uint64_t size;
> +};
> +
> +#define DRM_ROCKCHIP_GEM_CREATE                0x00
> +#define DRM_ROCKCHIP_GEM_MAP_OFFSET    0x01
> +#define DRM_ROCKCHIP_GEM_MMAP          0x02
> +#define DRM_ROCKCHIP_GEM_GET           0x04
> +
> +#define DRM_IOCTL_ROCKCHIP_GEM_CREATE  DRM_IOWR(DRM_COMMAND_BASE + \
> +               DRM_ROCKCHIP_GEM_CREATE, struct drm_rockchip_gem_create)
> +
> +#define DRM_IOCTL_ROCKCHIP_GEM_MAP_OFFSET      DRM_IOWR(DRM_COMMAND_BASE + \
> +               DRM_ROCKCHIP_GEM_MAP_OFFSET, struct drm_rockchip_gem_map_off)
> +
> +#define DRM_IOCTL_ROCKCHIP_GEM_MMAP    DRM_IOWR(DRM_COMMAND_BASE + \
> +               DRM_ROCKCHIP_GEM_MMAP, struct drm_rockchip_gem_mmap)
> +
> +#define DRM_IOCTL_ROCKCHIP_GEM_GET     DRM_IOWR(DRM_COMMAND_BASE + \
> +               DRM_ROCKCHIP_GEM_GET, struct drm_rockchip_gem_info)
> +#endif /* _UAPI_ROCKCHIP_DRM_H */
yao mark Sept. 22, 2014, 1:27 a.m. UTC | #3
On 2014?09?19? 21:04, David Herrmann wrote:
> Hi
>
> On Fri, Sep 19, 2014 at 7:47 AM, Mark yao <mark.yao@rock-chips.com> wrote:
> [snip]
>> +static int rockchip_drm_bind(struct device *dev)
>> +{
>> +       return drm_platform_init(&rockchip_drm_driver, to_platform_device(dev));
> Please avoid drm_platform_*() usage. We're about to drop all the
> drm_bus midlayers. See the tegra driver how to do it, but basically
> just this:
OK, I will do it.
> struct drm_device *ddev;
>
> ddev = drm_dev_alloc(&rockchip_drm_driver, &to_platform_device(dev)->dev);
> if (!ddev)
>          return -ENOMEM;
>
> r = drm_dev_set_unique(ddev, dev_name(&ddev->dev));
> if (r < 0) {
>          drm_dev_unref(ddev);
>          return r;
> }
>
> r = drm_dev_register(ddev);
> if (r < 0) {
>          drm_dev_unref(ddev);
>          return r;
> }
>
>> +}
>> +
>> +static void rockchip_drm_unbind(struct device *dev)
>> +{
>> +       drm_put_dev(dev_get_drvdata(dev));
> Please use:
>
> struct drm_device *ddev = dev_get_drvdata(dev);
>
> drm_dev_unregister(ddev);
> drm_dev_unref(ddev);
>
>
> Thanks
> David
>
>
>
yao mark Sept. 22, 2014, 1:32 a.m. UTC | #4
On 2014?09?20? 08:03, Rob Clark wrote:
> On Fri, Sep 19, 2014 at 1:47 AM, Mark yao <mark.yao@rock-chips.com> wrote:
>> diff --git a/include/uapi/drm/rockchip_drm.h b/include/uapi/drm/rockchip_drm.h
>> new file mode 100644
>> index 0000000..8f8e60e
>> --- /dev/null
>> +++ b/include/uapi/drm/rockchip_drm.h
>> @@ -0,0 +1,97 @@
>> +/*
>> + *
>> + * Copyright (c) Fuzhou Rockchip Electronics Co.Ltd
>> + * Authors:
>> + *       Mark Yao <yzq@rock-chips.com>
>> + *
>> + * base on exynos_drm.h
>> + *
>> + * 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 _UAPI_ROCKCHIP_DRM_H
>> +#define _UAPI_ROCKCHIP_DRM_H
>> +
>> +#include <drm/drm.h>
>> +
>> +/**
>> + * User-desired buffer creation information structure.
>> + *
>> + * @size: user-desired memory allocation size.
>> + * @flags: user request for setting memory type or cache attributes.
>> + * @handle: returned a handle to created gem object.
>> + *     - this handle will be set by gem module of kernel side.
>> + */
>> +struct drm_rockchip_gem_create {
>> +       uint64_t size;
>> +       uint32_t flags;
>> +       uint32_t handle;
>> +};
>> +
>> +/**
>> + * A structure for getting buffer offset.
>> + *
>> + * @handle: a pointer to gem object created.
>> + * @pad: just padding to be 64-bit aligned.
>> + * @offset: relatived offset value of the memory region allocated.
>> + *     - this value should be set by user.
>> + */
>> +struct drm_rockchip_gem_map_off {
>> +       uint32_t handle;
>> +       uint32_t pad;
>> +       uint64_t offset;
>> +};
>> +
>> +/**
>> + * A structure for mapping buffer.
>> + *
>> + * @handle: a handle to gem object created.
>> + * @pad: just padding to be 64-bit aligned.
>> + * @size: memory size to be mapped.
>> + * @mapped: having user virtual address mmaped.
>> + *      - this variable would be filled by rockchip gem module
>> + *      of kernel side with user virtual address which is allocated
>> + *      by do_mmap().
>> + */
>> +struct drm_rockchip_gem_mmap {
>> +       uint32_t handle;
>> +       uint32_t pad;
>> +       uint64_t size;
>> +       uint64_t mapped;
>> +};
> Could we do without the mmap ioctl?  It has been a source of problems
> in other drivers, and the ioctl to get mmap offset, plus normal mmap()
> on drm device file should be sufficient
>
> BR,
> -R
OK, I will try to move the special mmap ioctl and use drm generic mmap 
interface.
>
>> +/**
>> + * A structure to gem information.
>> + *
>> + * @handle: a handle to gem object created.
>> + * @flags: flag value including memory type and cache attribute and
>> + *      this value would be set by driver.
>> + * @size: size to memory region allocated by gem and this size would
>> + *      be set by driver.
>> + */
>> +struct drm_rockchip_gem_info {
>> +       uint32_t handle;
>> +       uint32_t flags;
>> +       uint64_t size;
>> +};
>> +
>> +#define DRM_ROCKCHIP_GEM_CREATE                0x00
>> +#define DRM_ROCKCHIP_GEM_MAP_OFFSET    0x01
>> +#define DRM_ROCKCHIP_GEM_MMAP          0x02
>> +#define DRM_ROCKCHIP_GEM_GET           0x04
>> +
>> +#define DRM_IOCTL_ROCKCHIP_GEM_CREATE  DRM_IOWR(DRM_COMMAND_BASE + \
>> +               DRM_ROCKCHIP_GEM_CREATE, struct drm_rockchip_gem_create)
>> +
>> +#define DRM_IOCTL_ROCKCHIP_GEM_MAP_OFFSET      DRM_IOWR(DRM_COMMAND_BASE + \
>> +               DRM_ROCKCHIP_GEM_MAP_OFFSET, struct drm_rockchip_gem_map_off)
>> +
>> +#define DRM_IOCTL_ROCKCHIP_GEM_MMAP    DRM_IOWR(DRM_COMMAND_BASE + \
>> +               DRM_ROCKCHIP_GEM_MMAP, struct drm_rockchip_gem_mmap)
>> +
>> +#define DRM_IOCTL_ROCKCHIP_GEM_GET     DRM_IOWR(DRM_COMMAND_BASE + \
>> +               DRM_ROCKCHIP_GEM_GET, struct drm_rockchip_gem_info)
>> +#endif /* _UAPI_ROCKCHIP_DRM_H */
>
>
Daniel Vetter Sept. 23, 2014, 7:48 a.m. UTC | #5
On Mon, Sep 22, 2014 at 09:32:19AM +0800, Mark yao wrote:
> On 2014?09?20? 08:03, Rob Clark wrote:
> >On Fri, Sep 19, 2014 at 1:47 AM, Mark yao <mark.yao@rock-chips.com> wrote:
> >>diff --git a/include/uapi/drm/rockchip_drm.h b/include/uapi/drm/rockchip_drm.h
> >>new file mode 100644
> >>index 0000000..8f8e60e
> >>--- /dev/null
> >>+++ b/include/uapi/drm/rockchip_drm.h
> >>@@ -0,0 +1,97 @@
> >>+/*
> >>+ *
> >>+ * Copyright (c) Fuzhou Rockchip Electronics Co.Ltd
> >>+ * Authors:
> >>+ *       Mark Yao <yzq@rock-chips.com>
> >>+ *
> >>+ * base on exynos_drm.h
> >>+ *
> >>+ * 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 _UAPI_ROCKCHIP_DRM_H
> >>+#define _UAPI_ROCKCHIP_DRM_H
> >>+
> >>+#include <drm/drm.h>
> >>+
> >>+/**
> >>+ * User-desired buffer creation information structure.
> >>+ *
> >>+ * @size: user-desired memory allocation size.
> >>+ * @flags: user request for setting memory type or cache attributes.
> >>+ * @handle: returned a handle to created gem object.
> >>+ *     - this handle will be set by gem module of kernel side.
> >>+ */
> >>+struct drm_rockchip_gem_create {
> >>+       uint64_t size;
> >>+       uint32_t flags;
> >>+       uint32_t handle;
> >>+};
> >>+
> >>+/**
> >>+ * A structure for getting buffer offset.
> >>+ *
> >>+ * @handle: a pointer to gem object created.
> >>+ * @pad: just padding to be 64-bit aligned.
> >>+ * @offset: relatived offset value of the memory region allocated.
> >>+ *     - this value should be set by user.
> >>+ */
> >>+struct drm_rockchip_gem_map_off {
> >>+       uint32_t handle;
> >>+       uint32_t pad;
> >>+       uint64_t offset;
> >>+};
> >>+
> >>+/**
> >>+ * A structure for mapping buffer.
> >>+ *
> >>+ * @handle: a handle to gem object created.
> >>+ * @pad: just padding to be 64-bit aligned.
> >>+ * @size: memory size to be mapped.
> >>+ * @mapped: having user virtual address mmaped.
> >>+ *      - this variable would be filled by rockchip gem module
> >>+ *      of kernel side with user virtual address which is allocated
> >>+ *      by do_mmap().
> >>+ */
> >>+struct drm_rockchip_gem_mmap {
> >>+       uint32_t handle;
> >>+       uint32_t pad;
> >>+       uint64_t size;
> >>+       uint64_t mapped;
> >>+};
> >Could we do without the mmap ioctl?  It has been a source of problems
> >in other drivers, and the ioctl to get mmap offset, plus normal mmap()
> >on drm device file should be sufficient
> >
> >BR,
> >-R
> OK, I will try to move the special mmap ioctl and use drm generic mmap
> interface.

Actually you probably should drop all this and just implement the dummy
object support for now. Until you have proper hw accel there's no reason
to expose a driver-private gem create/mmap interface at all.

A pure kms driver really shouldn't have it's on uapi/foo_drm.h file.
-Daniel
yao mark Sept. 23, 2014, 8 a.m. UTC | #6
On 2014?09?23? 15:48, Daniel Vetter wrote:
> On Mon, Sep 22, 2014 at 09:32:19AM +0800, Mark yao wrote:
>> On 2014?09?20? 08:03, Rob Clark wrote:
>>> On Fri, Sep 19, 2014 at 1:47 AM, Mark yao <mark.yao@rock-chips.com> wrote:
>>>> diff --git a/include/uapi/drm/rockchip_drm.h b/include/uapi/drm/rockchip_drm.h
>>>> new file mode 100644
>>>> index 0000000..8f8e60e
>>>> --- /dev/null
>>>> +++ b/include/uapi/drm/rockchip_drm.h
>>>> @@ -0,0 +1,97 @@
>>>> +/*
>>>> + *
>>>> + * Copyright (c) Fuzhou Rockchip Electronics Co.Ltd
>>>> + * Authors:
>>>> + *       Mark Yao <yzq@rock-chips.com>
>>>> + *
>>>> + * base on exynos_drm.h
>>>> + *
>>>> + * 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 _UAPI_ROCKCHIP_DRM_H
>>>> +#define _UAPI_ROCKCHIP_DRM_H
>>>> +
>>>> +#include <drm/drm.h>
>>>> +
>>>> +/**
>>>> + * User-desired buffer creation information structure.
>>>> + *
>>>> + * @size: user-desired memory allocation size.
>>>> + * @flags: user request for setting memory type or cache attributes.
>>>> + * @handle: returned a handle to created gem object.
>>>> + *     - this handle will be set by gem module of kernel side.
>>>> + */
>>>> +struct drm_rockchip_gem_create {
>>>> +       uint64_t size;
>>>> +       uint32_t flags;
>>>> +       uint32_t handle;
>>>> +};
>>>> +
>>>> +/**
>>>> + * A structure for getting buffer offset.
>>>> + *
>>>> + * @handle: a pointer to gem object created.
>>>> + * @pad: just padding to be 64-bit aligned.
>>>> + * @offset: relatived offset value of the memory region allocated.
>>>> + *     - this value should be set by user.
>>>> + */
>>>> +struct drm_rockchip_gem_map_off {
>>>> +       uint32_t handle;
>>>> +       uint32_t pad;
>>>> +       uint64_t offset;
>>>> +};
>>>> +
>>>> +/**
>>>> + * A structure for mapping buffer.
>>>> + *
>>>> + * @handle: a handle to gem object created.
>>>> + * @pad: just padding to be 64-bit aligned.
>>>> + * @size: memory size to be mapped.
>>>> + * @mapped: having user virtual address mmaped.
>>>> + *      - this variable would be filled by rockchip gem module
>>>> + *      of kernel side with user virtual address which is allocated
>>>> + *      by do_mmap().
>>>> + */
>>>> +struct drm_rockchip_gem_mmap {
>>>> +       uint32_t handle;
>>>> +       uint32_t pad;
>>>> +       uint64_t size;
>>>> +       uint64_t mapped;
>>>> +};
>>> Could we do without the mmap ioctl?  It has been a source of problems
>>> in other drivers, and the ioctl to get mmap offset, plus normal mmap()
>>> on drm device file should be sufficient
>>>
>>> BR,
>>> -R
>> OK, I will try to move the special mmap ioctl and use drm generic mmap
>> interface.
> Actually you probably should drop all this and just implement the dummy
> object support for now. Until you have proper hw accel there's no reason
> to expose a driver-private gem create/mmap interface at all.
>
> A pure kms driver really shouldn't have it's on uapi/foo_drm.h file.
> -Daniel
right, I will try to do it.

Patch
diff mbox

diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index b066bb3..7c4c3c6 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -171,6 +171,8 @@  config DRM_SAVAGE
 
 source "drivers/gpu/drm/exynos/Kconfig"
 
+source "drivers/gpu/drm/rockchip/Kconfig"
+
 source "drivers/gpu/drm/vmwgfx/Kconfig"
 
 source "drivers/gpu/drm/gma500/Kconfig"
diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
index 4a55d59..d03387a 100644
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -52,6 +52,7 @@  obj-$(CONFIG_DRM_VMWGFX)+= vmwgfx/
 obj-$(CONFIG_DRM_VIA)	+=via/
 obj-$(CONFIG_DRM_NOUVEAU) +=nouveau/
 obj-$(CONFIG_DRM_EXYNOS) +=exynos/
+obj-$(CONFIG_DRM_ROCKCHIP) +=rockchip/
 obj-$(CONFIG_DRM_GMA500) += gma500/
 obj-$(CONFIG_DRM_UDL) += udl/
 obj-$(CONFIG_DRM_AST) += ast/
diff --git a/drivers/gpu/drm/rockchip/Kconfig b/drivers/gpu/drm/rockchip/Kconfig
new file mode 100644
index 0000000..7146c80
--- /dev/null
+++ b/drivers/gpu/drm/rockchip/Kconfig
@@ -0,0 +1,19 @@ 
+config DRM_ROCKCHIP
+	tristate "DRM Support for Rockchip"
+	depends on DRM && ROCKCHIP_IOMMU
+	select ARM_DMA_USE_IOMMU
+	select IOMMU_API
+	select DRM_KMS_HELPER
+	select DRM_KMS_FB_HELPER
+	select DRM_PANEL
+	select FB_CFB_FILLRECT
+	select FB_CFB_COPYAREA
+	select FB_CFB_IMAGEBLIT
+	select VT_HW_CONSOLE_BINDING if FRAMEBUFFER_CONSOLE
+	select VIDEOMODE_HELPERS
+	help
+	  Choose this option if you have a Rockchip soc chipset.
+	  This driver provides kernel mode setting and buffer
+	  management to userspace. This driver does not provides
+	  2D or 3D acceleration; acceleration is performed by other
+	  IP found on the SoC.
diff --git a/drivers/gpu/drm/rockchip/Makefile b/drivers/gpu/drm/rockchip/Makefile
new file mode 100644
index 0000000..6e6d468
--- /dev/null
+++ b/drivers/gpu/drm/rockchip/Makefile
@@ -0,0 +1,10 @@ 
+#
+# Makefile for the drm device driver.  This driver provides support for the
+# Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher.
+
+ccflags-y := -Iinclude/drm -Idrivers/gpu/drm/rockchip
+
+rockchipdrm-y := rockchip_drm_drv.o rockchip_drm_fb.o rockchip_drm_fbdev.o \
+		rockchip_drm_gem.o rockchip_drm_vop.o
+
+obj-$(CONFIG_DRM_ROCKCHIP) += rockchipdrm.o
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
new file mode 100644
index 0000000..f84dcd8
--- /dev/null
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
@@ -0,0 +1,502 @@ 
+/*
+ * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
+ * Author:Mark Yao <mark.yao@rock-chips.com>
+ *
+ * based on exynos_drm_drv.c
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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 <asm/dma-iommu.h>
+
+#include <drm/drmP.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_fb_helper.h>
+#include <linux/dma-mapping.h>
+#include <linux/pm_runtime.h>
+#include <linux/of_graph.h>
+#include <linux/component.h>
+
+#include <drm/rockchip_drm.h>
+
+#include "rockchip_drm_drv.h"
+#include "rockchip_drm_fb.h"
+#include "rockchip_drm_fbdev.h"
+#include "rockchip_drm_gem.h"
+
+#define DRIVER_NAME	"rockchip"
+#define DRIVER_DESC	"RockChip Soc DRM"
+#define DRIVER_DATE	"20140818"
+#define DRIVER_MAJOR	1
+#define DRIVER_MINOR	0
+
+/*
+ * Attach a (component) device to the shared drm dma mapping from master drm
+ * device.  This is used by the VOPs to map GEM buffers to a common DMA
+ * mapping.
+ */
+int rockchip_drm_dma_attach_device(struct drm_device *drm_dev,
+				   struct device *dev)
+{
+	struct dma_iommu_mapping *mapping = drm_dev->dev->archdata.mapping;
+	int ret;
+
+	ret = dma_set_coherent_mask(dev, DMA_BIT_MASK(32));
+	if (ret)
+		return ret;
+
+	dma_set_max_seg_size(dev, 0xffffffffu);
+
+	return arm_iommu_attach_device(dev, mapping);
+}
+
+void rockchip_drm_dma_detach_device(struct drm_device *drm_dev,
+				    struct device *dev)
+{
+	arm_iommu_detach_device(drm_dev->dev);
+}
+
+static int rockchip_drm_load(struct drm_device *drm_dev, unsigned long flags)
+{
+	struct rockchip_drm_private *private;
+	struct dma_iommu_mapping *mapping;
+	struct device *dev = drm_dev->dev;
+	int ret;
+
+	private = devm_kzalloc(drm_dev->dev, sizeof(*private), GFP_KERNEL);
+	if (!private)
+		return -ENOMEM;
+
+	dev_set_drvdata(drm_dev->dev, dev);
+	drm_dev->dev_private = private;
+
+	drm_mode_config_init(drm_dev);
+
+	rockchip_drm_mode_config_init(drm_dev);
+
+	dev->dma_parms = devm_kzalloc(dev, sizeof(*dev->dma_parms),
+				      GFP_KERNEL);
+	if (!dev->dma_parms) {
+		ret = -ENOMEM;
+		goto err_config_cleanup;
+	}
+
+	/* TODO(djkurtz): fetch the mapping start/size from somewhere */
+	mapping = arm_iommu_create_mapping(&platform_bus_type, 0x10000000,
+					   SZ_1G);
+	if (IS_ERR(mapping)) {
+		ret = PTR_ERR(mapping);
+		goto err_config_cleanup;
+	}
+
+	dma_set_coherent_mask(dev, DMA_BIT_MASK(32));
+	dma_set_max_seg_size(dev, 0xffffffffu);
+
+	ret = arm_iommu_attach_device(dev, mapping);
+	if (ret)
+		goto err_release_mapping;
+
+	/* Try to bind all sub drivers. */
+	ret = component_bind_all(dev, drm_dev);
+	if (ret)
+		goto err_detach_device;
+
+	/* init kms poll for handling hpd */
+	drm_kms_helper_poll_init(drm_dev);
+
+	/*
+	 * enable drm irq mode.
+	 * - with irq_enabled = true, we can use the vblank feature.
+	 */
+	drm_dev->irq_enabled = true;
+
+	/*
+	 * with vblank_disable_allowed = true, vblank interrupt will be disabled
+	 * by drm timer once a current process gives up ownership of
+	 * vblank event.(after drm_vblank_put function is called)
+	 */
+	drm_dev->vblank_disable_allowed = true;
+
+	ret = drm_vblank_init(drm_dev, ROCKCHIP_MAX_CRTC);
+	if (ret)
+		goto err_kms_helper_poll_fini;
+
+	rockchip_drm_fbdev_init(drm_dev);
+
+	/* force connectors detection */
+	drm_helper_hpd_irq_event(drm_dev);
+
+	return 0;
+
+err_kms_helper_poll_fini:
+	drm_kms_helper_poll_fini(drm_dev);
+	component_unbind_all(dev, drm_dev);
+err_detach_device:
+	arm_iommu_detach_device(dev);
+err_release_mapping:
+	arm_iommu_release_mapping(dev->archdata.mapping);
+err_config_cleanup:
+	drm_mode_config_cleanup(drm_dev);
+	drm_dev->dev_private = NULL;
+	dev_set_drvdata(dev, NULL);
+	return ret;
+}
+
+static int rockchip_drm_unload(struct drm_device *drm_dev)
+{
+	struct device *dev = drm_dev->dev;
+
+	drm_kms_helper_poll_fini(drm_dev);
+	component_unbind_all(dev, drm_dev);
+	arm_iommu_detach_device(dev);
+	arm_iommu_release_mapping(dev->archdata.mapping);
+	drm_mode_config_cleanup(drm_dev);
+	drm_dev->dev_private = NULL;
+	dev_set_drvdata(dev, NULL);
+
+	return 0;
+}
+
+static int rockchip_drm_suspend(struct drm_device *dev, pm_message_t state)
+{
+	struct drm_connector *connector;
+
+	drm_modeset_lock_all(dev);
+	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+		int old_dpms = connector->dpms;
+
+		if (connector->funcs->dpms)
+			connector->funcs->dpms(connector, DRM_MODE_DPMS_OFF);
+
+		/* Set the old mode back to the connector for resume */
+		connector->dpms = old_dpms;
+	}
+	drm_modeset_unlock_all(dev);
+
+	return 0;
+}
+
+static int rockchip_drm_resume(struct drm_device *dev)
+{
+	struct drm_connector *connector;
+
+	drm_modeset_lock_all(dev);
+	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+		if (connector->funcs->dpms)
+			connector->funcs->dpms(connector, connector->dpms);
+	}
+	drm_modeset_unlock_all(dev);
+
+	drm_helper_resume_force_mode(dev);
+
+	return 0;
+}
+
+void rockchip_drm_lastclose(struct drm_device *dev)
+{
+	struct rockchip_drm_private *priv = dev->dev_private;
+
+	drm_modeset_lock_all(dev);
+	if (priv->fb_helper)
+		drm_fb_helper_restore_fbdev_mode(priv->fb_helper);
+	drm_modeset_unlock_all(dev);
+}
+
+static const struct drm_ioctl_desc rockchip_ioctls[] = {
+	DRM_IOCTL_DEF_DRV(ROCKCHIP_GEM_CREATE, rockchip_gem_create_ioctl,
+			  DRM_UNLOCKED | DRM_AUTH),
+	DRM_IOCTL_DEF_DRV(ROCKCHIP_GEM_GET, rockchip_gem_get_ioctl,
+			  DRM_UNLOCKED),
+	DRM_IOCTL_DEF_DRV(ROCKCHIP_GEM_MAP_OFFSET,
+			  rockchip_gem_map_offset_ioctl, DRM_UNLOCKED |
+			  DRM_AUTH),
+	DRM_IOCTL_DEF_DRV(ROCKCHIP_GEM_MMAP, rockchip_gem_mmap_ioctl,
+			  DRM_UNLOCKED | DRM_AUTH),
+};
+
+static const struct file_operations rockchip_drm_driver_fops = {
+	.owner = THIS_MODULE,
+	.open = drm_open,
+	.mmap = drm_gem_mmap,
+	.poll = drm_poll,
+	.read = drm_read,
+	.unlocked_ioctl = drm_ioctl,
+#ifdef CONFIG_COMPAT
+	.compat_ioctl = drm_compat_ioctl,
+#endif
+	.release = drm_release,
+};
+
+const struct vm_operations_struct rockchip_drm_vm_ops = {
+	.open = drm_gem_vm_open,
+	.close = drm_gem_vm_close,
+};
+
+static struct drm_driver rockchip_drm_driver = {
+	.driver_features	= DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME,
+	.load			= rockchip_drm_load,
+	.unload			= rockchip_drm_unload,
+	.lastclose		= rockchip_drm_lastclose,
+	.suspend		= rockchip_drm_suspend,
+	.resume			= rockchip_drm_resume,
+	.get_vblank_counter	= drm_vblank_count,
+	.enable_vblank		= rockchip_drm_crtc_enable_vblank,
+	.disable_vblank		= rockchip_drm_crtc_disable_vblank,
+	.gem_vm_ops		= &rockchip_drm_vm_ops,
+	.gem_free_object	= rockchip_gem_free_object,
+	.dumb_create		= rockchip_gem_dumb_create,
+	.dumb_map_offset	= rockchip_gem_dumb_map_offset,
+	.dumb_destroy		= drm_gem_dumb_destroy,
+	.prime_handle_to_fd	= drm_gem_prime_handle_to_fd,
+	.prime_fd_to_handle	= drm_gem_prime_fd_to_handle,
+	.gem_prime_import	= drm_gem_prime_import,
+	.gem_prime_export	= drm_gem_prime_export,
+	.gem_prime_get_sg_table	= rockchip_gem_prime_get_sg_table,
+	.gem_prime_import_sg_table	= rockchip_gem_prime_import_sg_table,
+	.gem_prime_vmap		= rockchip_gem_prime_vmap,
+	.gem_prime_vunmap	= rockchip_gem_prime_vunmap,
+	.gem_prime_mmap		= rockchip_gem_prime_mmap,
+	.ioctls			= rockchip_ioctls,
+	.num_ioctls		= ARRAY_SIZE(rockchip_ioctls),
+	.fops			= &rockchip_drm_driver_fops,
+	.name	= DRIVER_NAME,
+	.desc	= DRIVER_DESC,
+	.date	= DRIVER_DATE,
+	.major	= DRIVER_MAJOR,
+	.minor	= DRIVER_MINOR,
+};
+
+#ifdef CONFIG_PM_SLEEP
+static int rockchip_drm_sys_suspend(struct device *dev)
+{
+	struct drm_device *drm_dev = dev_get_drvdata(dev);
+	pm_message_t message;
+
+	if (pm_runtime_suspended(dev))
+		return 0;
+
+	message.event = PM_EVENT_SUSPEND;
+
+	return rockchip_drm_suspend(drm_dev, message);
+}
+
+static int rockchip_drm_sys_resume(struct device *dev)
+{
+	struct drm_device *drm_dev = dev_get_drvdata(dev);
+
+	if (pm_runtime_suspended(dev))
+		return 0;
+
+	return rockchip_drm_resume(drm_dev);
+}
+#endif
+
+static const struct dev_pm_ops rockchip_drm_pm_ops = {
+	SET_SYSTEM_SLEEP_PM_OPS(rockchip_drm_sys_suspend,
+				rockchip_drm_sys_resume)
+};
+
+int rockchip_drm_add_crtc(struct drm_device *drm, struct drm_crtc *crtc,
+			  struct device_node *np)
+{
+	struct rockchip_drm_private *priv = drm->dev_private;
+	struct device_node *port;
+	int pipe;
+
+	if (priv->num_pipe >= ROCKCHIP_MAX_CRTC)
+		return -EINVAL;
+
+	port = of_get_child_by_name(np, "port");
+	of_node_put(np);
+	if (!port) {
+		dev_err(drm->dev, "no port node found in %s\n",
+			np->full_name);
+		return -ENXIO;
+	}
+	pipe = priv->num_pipe++;
+	crtc->port = port;
+
+	priv->crtc[pipe] = crtc;
+
+	return pipe;
+}
+
+void rockchip_drm_remove_crtc(struct drm_device *drm, int pipe)
+{
+	struct rockchip_drm_private *priv = drm->dev_private;
+
+	priv->num_pipe--;
+	of_node_put(priv->crtc[pipe]->port);
+	priv->crtc[pipe] = NULL;
+}
+
+struct drm_crtc *rockchip_find_crtc(struct drm_device *drm, int pipe)
+{
+	struct rockchip_drm_private *priv = drm->dev_private;
+
+	if (pipe < ROCKCHIP_MAX_CRTC && priv->crtc[pipe])
+		return priv->crtc[pipe];
+
+	return NULL;
+}
+
+/*
+ * @node: device tree node containing encoder input ports
+ * @encoder: drm_encoder
+ */
+int rockchip_drm_encoder_get_mux_id(struct device_node *node,
+				    struct drm_encoder *encoder)
+{
+	struct device_node *ep = NULL;
+	struct drm_crtc *crtc = encoder->crtc;
+	struct of_endpoint endpoint;
+	struct device_node *port;
+	int ret;
+
+	if (!node || !crtc)
+		return -EINVAL;
+
+	do {
+		ep = of_graph_get_next_endpoint(node, ep);
+		if (!ep)
+			break;
+
+		port = of_graph_get_remote_port(ep);
+		of_node_put(port);
+		if (port == crtc->port) {
+			ret = of_graph_parse_endpoint(ep, &endpoint);
+			return ret ? ret : endpoint.id;
+		}
+	} while (ep);
+
+	return -EINVAL;
+}
+
+static int compare_of(struct device *dev, void *data)
+{
+	struct device_node *np = data;
+
+	return dev->of_node == np;
+}
+
+static void rockchip_add_endpoints(struct device *dev,
+				   struct component_match **match,
+				   struct device_node *port)
+{
+	struct device_node *ep, *remote;
+
+	for_each_child_of_node(port, ep) {
+		remote = of_graph_get_remote_port_parent(ep);
+		if (!remote || !of_device_is_available(remote)) {
+			of_node_put(remote);
+			continue;
+		} else if (!of_device_is_available(remote->parent)) {
+			dev_warn(dev, "parent device of %s is not available\n",
+				 remote->full_name);
+			of_node_put(remote);
+			continue;
+		}
+
+		component_match_add(dev, match, compare_of, remote);
+		of_node_put(remote);
+	}
+}
+
+static int rockchip_drm_bind(struct device *dev)
+{
+	return drm_platform_init(&rockchip_drm_driver, to_platform_device(dev));
+}
+
+static void rockchip_drm_unbind(struct device *dev)
+{
+	drm_put_dev(dev_get_drvdata(dev));
+}
+
+static const struct component_master_ops rockchip_drm_ops = {
+	.bind = rockchip_drm_bind,
+	.unbind = rockchip_drm_unbind,
+};
+
+static int rockchip_drm_platform_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct component_match *match = NULL;
+	struct device_node *np = dev->of_node;
+	struct device_node *port;
+	int i;
+	int ret;
+
+	if (!np)
+		return -ENODEV;
+	/*
+	 * Bind the crtc ports first, so that
+	 * drm_of_find_possible_crtcs called from encoder .bind callbacks
+	 * works as expected.
+	 */
+	for (i = 0;; i++) {
+		port = of_parse_phandle(np, "ports", i);
+		if (!port)
+			break;
+
+		component_match_add(dev, &match, compare_of, port->parent);
+		of_node_put(port);
+	}
+
+	if (i == 0) {
+		dev_err(dev, "missing 'ports' property\n");
+		return -ENODEV;
+	}
+	/*
+	 * For each bound crtc, bind the encoders attached to its
+	 * remote endpoint.
+	 */
+	for (i = 0;; i++) {
+		port = of_parse_phandle(np, "ports", i);
+		if (!port)
+			break;
+
+		rockchip_add_endpoints(dev, &match, port);
+		of_node_put(port);
+	}
+
+	ret = dma_set_coherent_mask(dev, DMA_BIT_MASK(32));
+	if (ret)
+		return ret;
+
+	return component_master_add_with_match(dev, &rockchip_drm_ops, match);
+}
+
+static int rockchip_drm_platform_remove(struct platform_device *pdev)
+{
+	component_master_del(&pdev->dev, &rockchip_drm_ops);
+	return 0;
+}
+
+static const struct of_device_id rockchip_drm_dt_ids[] = {
+	{ .compatible = "rockchip,display-subsystem", },
+	{ /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, rockchip_drm_dt_ids);
+
+static struct platform_driver rockchip_drm_platform_driver = {
+	.probe = rockchip_drm_platform_probe,
+	.remove = rockchip_drm_platform_remove,
+	.driver = {
+		.owner = THIS_MODULE,
+		.name = "rockchip-drm",
+		.of_match_table = rockchip_drm_dt_ids,
+	},
+};
+
+module_platform_driver(rockchip_drm_platform_driver);
+
+MODULE_AUTHOR("Mark Yao <mark.yao@rock-chips.com>");
+MODULE_DESCRIPTION("ROCKCHIP DRM Driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.h b/drivers/gpu/drm/rockchip/rockchip_drm_drv.h
new file mode 100644
index 0000000..154b3ec
--- /dev/null
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.h
@@ -0,0 +1,120 @@ 
+/*
+ * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
+ * Author:Mark Yao <mark.yao@rock-chips.com>
+ *
+ * based on exynos_drm_drv.h
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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.
+ */
+
+#ifndef _ROCKCHIP_DRM_DRV_H
+#define _ROCKCHIP_DRM_DRV_H
+
+#include <linux/module.h>
+#include <linux/component.h>
+
+#define ROCKCHIP_MAX_FB_BUFFER	4
+#define ROCKCHIP_MAX_CONNECTOR	2
+
+struct drm_device;
+struct drm_connector;
+
+/*
+ * display output interface supported by rockchip lcdc
+ */
+#define ROCKCHIP_OUTFACE_P888	0
+#define ROCKCHIP_OUTFACE_P666	1
+#define ROCKCHIP_OUTFACE_P565	2
+/* for use special outface */
+#define ROCKCHIP_OUTFACE_AAAA	15
+
+#define ROCKCHIP_COLOR_SWAP_RG	0x1
+#define ROCKCHIP_COLOR_SWAP_RB	0x2
+#define ROCKCHIP_COLOR_SWAP_GB	0x4
+
+/*
+ * Special mode info for rockchip
+ *
+ * @out_type: lcd controller need to know the sceen type.
+ */
+struct rockchip_display_mode {
+	int out_type;
+};
+
+#define ROCKCHIP_EVENT_HOTPLUG	1
+
+enum rockchip_plane_type {
+	ROCKCHIP_WIN0,
+	ROCKCHIP_WIN1,
+	ROCKCHIP_WIN2,
+	ROCKCHIP_WIN3,
+	ROCKCHIP_CURSOR,
+	ROCKCHIP_MAX_PLANE,
+};
+
+/* This enumerates device type. */
+enum rockchip_drm_device_type {
+	ROCKCHIP_DEVICE_TYPE_NONE,
+	ROCKCHIP_DEVICE_TYPE_CRTC,
+	ROCKCHIP_DEVICE_TYPE_CONNECTOR,
+};
+
+/* this enumerates display type. */
+enum rockchip_drm_output_type {
+	ROCKCHIP_DISPLAY_TYPE_NONE = 0,
+	/* RGB Interface. */
+	ROCKCHIP_DISPLAY_TYPE_RGB,
+	/* LVDS Interface. */
+	ROCKCHIP_DISPLAY_TYPE_LVDS,
+	/* EDP Interface. */
+	ROCKCHIP_DISPLAY_TYPE_EDP,
+	/* MIPI Interface. */
+	ROCKCHIP_DISPLAY_TYPE_MIPI,
+	/* HDMI Interface. */
+	ROCKCHIP_DISPLAY_TYPE_HDMI,
+};
+
+enum rockchip_crtc_type {
+	ROCKCHIP_CRTC_VOPB,
+	ROCKCHIP_CRTC_VOPL,
+	ROCKCHIP_MAX_CRTC,
+};
+
+/*
+ * Rockchip drm private structure.
+ *
+ * @num_pipe: number of pipes for this device.
+ */
+struct rockchip_drm_private {
+	struct drm_fb_helper *fb_helper;
+	/*
+	 * created crtc object would be contained at this array and
+	 * this array is used to be aware of which crtc did it request vblank.
+	 */
+	struct drm_crtc *crtc[ROCKCHIP_MAX_CRTC];
+
+	unsigned int num_pipe;
+};
+
+int rockchip_drm_add_crtc(struct drm_device *drm, struct drm_crtc *crtc,
+			  struct device_node *port);
+void rockchip_drm_remove_crtc(struct drm_device *drm, int pipe);
+struct drm_crtc *rockchip_find_crtc(struct drm_device *drm, int pipe);
+int rockchip_drm_encoder_get_mux_id(struct device_node *node,
+				    struct drm_encoder *encoder);
+void rockchip_drm_crtc_finish_pageflip(struct drm_device *dev, int pipe);
+void rockchip_drm_crtc_cancel_pending_flip(struct drm_device *dev);
+int rockchip_drm_crtc_enable_vblank(struct drm_device *dev, int pipe);
+void rockchip_drm_crtc_disable_vblank(struct drm_device *dev, int pipe);
+int rockchip_drm_dma_attach_device(struct drm_device *drm_dev,
+				   struct device *dev);
+void rockchip_drm_dma_detach_device(struct drm_device *drm_dev,
+				    struct device *dev);
+#endif /* _ROCKCHIP_DRM_DRV_H_ */
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_fb.c b/drivers/gpu/drm/rockchip/rockchip_drm_fb.c
new file mode 100644
index 0000000..b319505
--- /dev/null
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_fb.c
@@ -0,0 +1,201 @@ 
+/*
+ * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
+ * Author:Mark Yao <mark.yao@rock-chips.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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/kernel.h>
+#include <drm/drmP.h>
+#include <drm/drm_fb_helper.h>
+#include <drm/drm_crtc_helper.h>
+#include <uapi/drm/rockchip_drm.h>
+
+#include "rockchip_drm_drv.h"
+#include "rockchip_drm_gem.h"
+
+#define to_rockchip_fb(x) container_of(x, struct rockchip_drm_fb, fb)
+
+struct rockchip_drm_fb {
+	struct drm_framebuffer fb;
+	struct drm_gem_object *obj[ROCKCHIP_MAX_FB_BUFFER];
+};
+
+struct drm_gem_object *rockchip_fb_get_gem_obj(struct drm_framebuffer *fb,
+					       unsigned int plane)
+{
+	struct rockchip_drm_fb *rk_fb = to_rockchip_fb(fb);
+
+	if (plane >= ROCKCHIP_MAX_FB_BUFFER)
+		return NULL;
+
+	return rk_fb->obj[plane];
+}
+
+static void rockchip_drm_fb_destroy(struct drm_framebuffer *fb)
+{
+	struct rockchip_drm_fb *rockchip_fb = to_rockchip_fb(fb);
+	struct drm_gem_object *obj;
+	int i;
+
+	for (i = 0; i < ROCKCHIP_MAX_FB_BUFFER; i++) {
+		obj = rockchip_fb->obj[i];
+		if (obj)
+			drm_gem_object_unreference_unlocked(obj);
+	}
+
+	drm_framebuffer_cleanup(fb);
+	kfree(rockchip_fb);
+}
+
+static int rockchip_drm_fb_create_handle(struct drm_framebuffer *fb,
+					 struct drm_file *file_priv,
+					 unsigned int *handle)
+{
+	struct rockchip_drm_fb *rockchip_fb = to_rockchip_fb(fb);
+
+	return drm_gem_handle_create(file_priv,
+				     rockchip_fb->obj[0], handle);
+}
+
+static struct drm_framebuffer_funcs rockchip_drm_fb_funcs = {
+	.destroy	= rockchip_drm_fb_destroy,
+	.create_handle	= rockchip_drm_fb_create_handle,
+};
+
+static struct rockchip_drm_fb *
+rockchip_fb_alloc(struct drm_device *dev, struct drm_mode_fb_cmd2 *mode_cmd,
+		  struct drm_gem_object **obj, unsigned int num_planes)
+{
+	struct rockchip_drm_fb *rockchip_fb;
+	int ret;
+	int i;
+
+	rockchip_fb = kzalloc(sizeof(*rockchip_fb), GFP_KERNEL);
+	if (!rockchip_fb)
+		return ERR_PTR(-ENOMEM);
+
+	drm_helper_mode_fill_fb_struct(&rockchip_fb->fb, mode_cmd);
+
+	for (i = 0; i < num_planes; i++)
+		rockchip_fb->obj[i] = obj[i];
+
+	ret = drm_framebuffer_init(dev, &rockchip_fb->fb,
+				   &rockchip_drm_fb_funcs);
+	if (ret) {
+		dev_err(dev->dev, "Failed to initialize framebuffer: %d\n",
+			ret);
+		kfree(rockchip_fb);
+		return ERR_PTR(ret);
+	}
+
+	return rockchip_fb;
+}
+
+static struct drm_framebuffer *
+rockchip_user_fb_create(struct drm_device *dev, struct drm_file *file_priv,
+			struct drm_mode_fb_cmd2 *mode_cmd)
+{
+	struct rockchip_drm_fb *rockchip_fb;
+	struct drm_gem_object *objs[ROCKCHIP_MAX_FB_BUFFER];
+	struct drm_gem_object *obj;
+	unsigned int hsub;
+	unsigned int vsub;
+	int num_planes;
+	int ret;
+	int i;
+
+	hsub = drm_format_horz_chroma_subsampling(mode_cmd->pixel_format);
+	vsub = drm_format_vert_chroma_subsampling(mode_cmd->pixel_format);
+	num_planes = min(drm_format_num_planes(mode_cmd->pixel_format),
+			 ROCKCHIP_MAX_FB_BUFFER);
+
+	for (i = 0; i < num_planes; 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] +
+			mode_cmd->offsets[i] +
+			width * drm_format_plane_cpp(mode_cmd->pixel_format, i);
+
+		if (obj->size < min_size) {
+			drm_gem_object_unreference_unlocked(obj);
+			ret = -EINVAL;
+			goto err_gem_object_unreference;
+		}
+		objs[i] = obj;
+	}
+
+	rockchip_fb = rockchip_fb_alloc(dev, mode_cmd, objs, i);
+	if (IS_ERR(rockchip_fb)) {
+		ret = PTR_ERR(rockchip_fb);
+		goto err_gem_object_unreference;
+	}
+
+	return &rockchip_fb->fb;
+
+err_gem_object_unreference:
+	for (i--; i >= 0; i--)
+		drm_gem_object_unreference_unlocked(objs[i]);
+	return ERR_PTR(ret);
+}
+
+static void rockchip_drm_output_poll_changed(struct drm_device *dev)
+{
+	struct rockchip_drm_private *private = dev->dev_private;
+	struct drm_fb_helper *fb_helper = private->fb_helper;
+
+	if (fb_helper)
+		drm_fb_helper_hotplug_event(fb_helper);
+}
+
+static const struct drm_mode_config_funcs rockchip_drm_mode_config_funcs = {
+	.fb_create = rockchip_user_fb_create,
+	.output_poll_changed = rockchip_drm_output_poll_changed,
+};
+
+struct drm_framebuffer *
+rockchip_drm_framebuffer_init(struct drm_device *dev,
+			      struct drm_mode_fb_cmd2 *mode_cmd,
+			      struct drm_gem_object *obj)
+{
+	struct rockchip_drm_fb *rockchip_fb;
+
+	rockchip_fb = rockchip_fb_alloc(dev, mode_cmd, &obj, 1);
+	if (IS_ERR(rockchip_fb))
+		return NULL;
+
+	return &rockchip_fb->fb;
+}
+
+void rockchip_drm_mode_config_init(struct drm_device *dev)
+{
+	dev->mode_config.min_width = 0;
+	dev->mode_config.min_height = 0;
+
+	/*
+	 * set max width and height as default value(4096x4096).
+	 * this value would be used to check framebuffer size limitation
+	 * at drm_mode_addfb().
+	 */
+	dev->mode_config.max_width = 4096;
+	dev->mode_config.max_height = 4096;
+
+	dev->mode_config.funcs = &rockchip_drm_mode_config_funcs;
+}
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_fb.h b/drivers/gpu/drm/rockchip/rockchip_drm_fb.h
new file mode 100644
index 0000000..09574d4
--- /dev/null
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_fb.h
@@ -0,0 +1,28 @@ 
+/*
+ * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
+ * Author:Mark Yao <mark.yao@rock-chips.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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.
+ */
+
+#ifndef _ROCKCHIP_DRM_FB_H
+#define _ROCKCHIP_DRM_FB_H
+
+struct drm_framebuffer *
+rockchip_drm_framebuffer_init(struct drm_device *dev,
+			      struct drm_mode_fb_cmd2 *mode_cmd,
+			      struct drm_gem_object *obj);
+void rockchip_drm_framebuffer_fini(struct drm_framebuffer *fb);
+
+void rockchip_drm_mode_config_init(struct drm_device *dev);
+
+struct drm_gem_object *rockchip_fb_get_gem_obj(struct drm_framebuffer *fb,
+					       unsigned int plane);
+#endif /* _ROCKCHIP_DRM_FB_H */
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_fbdev.c b/drivers/gpu/drm/rockchip/rockchip_drm_fbdev.c
new file mode 100644
index 0000000..fe1bb22
--- /dev/null
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_fbdev.c
@@ -0,0 +1,231 @@ 
+/*
+ * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
+ * Author:Mark Yao <mark.yao@rock-chips.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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_fb_helper.h>
+#include <drm/drm_crtc_helper.h>
+
+#include <drm/rockchip_drm.h>
+
+#include "rockchip_drm_drv.h"
+#include "rockchip_drm_gem.h"
+#include "rockchip_drm_fb.h"
+
+#define PREFERRED_BPP		32
+#define to_rockchip_fbdev(x) container_of(x, struct rockchip_fbdev, helper)
+
+struct rockchip_fbdev {
+	struct drm_fb_helper helper;
+	struct drm_gem_object *bo;
+};
+
+static int rockchip_fbdev_mmap(struct fb_info *info,
+			       struct vm_area_struct *vma)
+{
+	struct drm_fb_helper *helper = info->par;
+	struct rockchip_fbdev *fbdev = to_rockchip_fbdev(helper);
+
+	return rockchip_gem_mmap(fbdev->bo, vma);
+}
+
+static struct fb_ops rockchip_drm_fbdev_ops = {
+	.owner		= THIS_MODULE,
+	.fb_mmap	= rockchip_fbdev_mmap,
+	.fb_fillrect	= cfb_fillrect,
+	.fb_copyarea	= cfb_copyarea,
+	.fb_imageblit	= cfb_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 rockchip_drm_fbdev_create(struct drm_fb_helper *helper,
+				     struct drm_fb_helper_surface_size *sizes)
+{
+	struct rockchip_fbdev *fbdev = to_rockchip_fbdev(helper);
+	struct drm_mode_fb_cmd2 mode_cmd = { 0 };
+	struct drm_device *dev = helper->dev;
+	struct rockchip_gem_object *rk_obj;
+	struct drm_framebuffer *fb;
+	unsigned int bytes_per_pixel;
+	unsigned long offset;
+	struct fb_info *fbi;
+	size_t size;
+	int ret;
+
+	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;
+
+	rk_obj = rockchip_gem_create_object(dev, size);
+	if (IS_ERR(rk_obj))
+		return -ENOMEM;
+
+	fbdev->bo = &rk_obj->base;
+
+	fbi = framebuffer_alloc(0, dev->dev);
+	if (!fbi) {
+		dev_err(dev->dev, "Failed to allocate framebuffer info.\n");
+		ret = -ENOMEM;
+		goto err_rockchip_gem_free_object;
+	}
+
+	helper->fb = rockchip_drm_framebuffer_init(dev, &mode_cmd, fbdev->bo);
+	if (IS_ERR(helper->fb)) {
+		dev_err(dev->dev, "Failed to allocate DRM framebuffer.\n");
+		ret = PTR_ERR(helper->fb);
+		goto err_framebuffer_release;
+	}
+
+	helper->fbdev = fbi;
+
+	fbi->par = helper;
+	fbi->flags = FBINFO_FLAG_DEFAULT;
+	fbi->fbops = &rockchip_drm_fbdev_ops;
+
+	ret = fb_alloc_cmap(&fbi->cmap, 256, 0);
+	if (ret) {
+		dev_err(dev->dev, "Failed to allocate color map.\n");
+		goto err_drm_framebuffer_unref;
+	}
+
+	fb = helper->fb;
+	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 = 0;
+	fbi->screen_base = rk_obj->kvaddr + offset;
+	fbi->screen_size = rk_obj->base.size;
+	fbi->fix.smem_len = rk_obj->base.size;
+
+	DRM_DEBUG_KMS("FB [%dx%d]-%d kvaddr=%p offset=%ld size=%d\n",
+		      fb->width, fb->height, fb->depth, rk_obj->kvaddr,
+		      offset, size);
+	return 0;
+
+err_drm_framebuffer_unref:
+	drm_framebuffer_unreference(helper->fb);
+err_framebuffer_release:
+	framebuffer_release(fbi);
+err_rockchip_gem_free_object:
+	rockchip_gem_free_object(&rk_obj->base);
+	return ret;
+}
+
+static struct drm_fb_helper_funcs rockchip_drm_fb_helper_funcs = {
+	.fb_probe = rockchip_drm_fbdev_create,
+};
+
+int rockchip_drm_fbdev_init(struct drm_device *dev)
+{
+	struct rockchip_drm_private *private = dev->dev_private;
+	struct rockchip_fbdev *fbdev;
+	struct drm_fb_helper *helper;
+	unsigned int num_crtc;
+	int ret;
+
+	if (!dev->mode_config.num_crtc || !dev->mode_config.num_connector)
+		return -EINVAL;
+
+	if (private->fb_helper) {
+		DRM_ERROR("no allow to reinit fbdev\n");
+		return -EINVAL;
+	}
+
+	num_crtc = dev->mode_config.num_crtc;
+
+	fbdev = kzalloc(sizeof(*fbdev), GFP_KERNEL);
+	if (!fbdev)
+		return -ENOMEM;
+
+	fbdev->helper.funcs = &rockchip_drm_fb_helper_funcs;
+	helper = &fbdev->helper;
+
+	ret = drm_fb_helper_init(dev, helper, num_crtc, ROCKCHIP_MAX_CONNECTOR);
+	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;
+	}
+
+	/* disable all the possible outputs/crtcs before entering KMS mode */
+	drm_helper_disable_unused_functions(dev);
+
+	ret = drm_fb_helper_initial_config(helper, PREFERRED_BPP);
+	if (ret < 0) {
+		dev_err(dev->dev, "Failed to set initial hw configuration.\n");
+		goto err_drm_fb_helper_fini;
+	}
+
+	private->fb_helper = helper;
+
+	return 0;
+
+err_drm_fb_helper_fini:
+	drm_fb_helper_fini(helper);
+err_free:
+	kfree(fbdev);
+	return ret;
+}
+
+void rockchip_drm_fbdev_fini(struct drm_device *dev)
+{
+	struct rockchip_drm_private *private = dev->dev_private;
+	struct drm_fb_helper *helper;
+	struct rockchip_fbdev *fbdev;
+
+	if (!private || !private->fb_helper)
+		return;
+
+	helper = private->fb_helper;
+	fbdev = to_rockchip_fbdev(helper);
+
+	if (helper->fbdev) {
+		struct fb_info *info;
+		int ret;
+
+		info = 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 (helper->fb)
+		drm_framebuffer_unreference(helper->fb);
+
+	drm_fb_helper_fini(helper);
+	kfree(fbdev);
+	private->fb_helper = NULL;
+}
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_fbdev.h b/drivers/gpu/drm/rockchip/rockchip_drm_fbdev.h
new file mode 100644
index 0000000..5edcf6a
--- /dev/null
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_fbdev.h
@@ -0,0 +1,20 @@ 
+/*
+ * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
+ * Author:Mark Yao <mark.yao@rock-chips.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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.
+ */
+
+#ifndef _ROCKCHIP_DRM_FBDEV_H
+#define _ROCKCHIP_DRM_FBDEV_H
+
+int rockchip_drm_fbdev_init(struct drm_device *dev);
+
+#endif /* _ROCKCHIP_DRM_FBDEV_H */
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
new file mode 100644
index 0000000..fd8c4de
--- /dev/null
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
@@ -0,0 +1,405 @@ 
+/*
+ * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
+ * Author:Mark Yao <mark.yao@rock-chips.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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_vma_manager.h>
+#include <drm/rockchip_drm.h>
+
+#include <linux/anon_inodes.h>
+#include <linux/dma-attrs.h>
+
+#include "rockchip_drm_drv.h"
+#include "rockchip_drm_gem.h"
+
+static int rockchip_gem_alloc_buf(struct rockchip_gem_object *rk_obj)
+{
+	struct drm_gem_object *obj = &rk_obj->base;
+	struct drm_device *drm = obj->dev;
+
+	init_dma_attrs(&rk_obj->dma_attrs);
+	dma_set_attr(DMA_ATTR_WRITE_COMBINE, &rk_obj->dma_attrs);
+
+	/* TODO(djkurtz): Use DMA_ATTR_NO_KERNEL_MAPPING except for fbdev */
+	rk_obj->kvaddr = dma_alloc_attrs(drm->dev, obj->size,
+					 &rk_obj->dma_addr, GFP_KERNEL,
+					 &rk_obj->dma_attrs);
+	if (IS_ERR(rk_obj->kvaddr)) {
+		int ret = PTR_ERR(rk_obj->kvaddr);
+
+		DRM_ERROR("failed to allocate %#x byte dma buffer, %d",
+			  obj->size, ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static void rockchip_gem_free_buf(struct rockchip_gem_object *rk_obj)
+{
+	struct drm_gem_object *obj = &rk_obj->base;
+	struct drm_device *drm = obj->dev;
+
+	dma_free_attrs(drm->dev, obj->size, rk_obj->kvaddr, rk_obj->dma_addr,
+		       &rk_obj->dma_attrs);
+}
+
+int rockchip_drm_gem_mmap_buffer(struct file *filp,
+				 struct vm_area_struct *vma)
+{
+	struct drm_gem_object *obj = filp->private_data;
+
+	return rockchip_gem_mmap(obj, vma);
+}
+
+static const struct file_operations rockchip_drm_gem_fops = {
+	.mmap = rockchip_drm_gem_mmap_buffer,
+};
+
+struct rockchip_gem_object *
+	rockchip_gem_create_object(struct drm_device *drm, unsigned int size)
+{
+	struct rockchip_gem_object *rk_obj;
+	struct drm_gem_object *obj;
+	struct file *filp;
+	int ret;
+
+	size = round_up(size, PAGE_SIZE);
+
+	rk_obj = kzalloc(sizeof(*rk_obj), GFP_KERNEL);
+	if (!rk_obj)
+		return ERR_PTR(-ENOMEM);
+
+	obj = &rk_obj->base;
+
+	drm_gem_private_object_init(drm, obj, size);
+
+	filp = anon_inode_getfile("rockchip_gem", &rockchip_drm_gem_fops,
+				  obj, 0);
+	if (IS_ERR(filp)) {
+		DRM_ERROR("failed to create anon file object.\n");
+		ret = PTR_ERR(filp);
+		goto err_free_rk_obj;
+	}
+	filp->f_mode = FMODE_READ | FMODE_WRITE;
+	obj->filp = filp;
+
+	ret = drm_gem_create_mmap_offset(obj);
+	if (ret)
+		goto err_free_obj;
+
+	ret = rockchip_gem_alloc_buf(rk_obj);
+	if (ret)
+		goto err_free_mmap_offset;
+
+	return rk_obj;
+
+err_free_mmap_offset:
+	drm_gem_free_mmap_offset(obj);
+err_free_obj:
+	drm_gem_object_release(obj);
+err_free_rk_obj:
+	kfree(rk_obj);
+	return ERR_PTR(ret);
+}
+
+/*
+ * rockchip_gem_free_object - (struct drm_driver)->gem_free_object callback
+ * function
+ */
+void rockchip_gem_free_object(struct drm_gem_object *obj)
+{
+	struct rockchip_gem_object *rk_obj;
+
+	drm_gem_free_mmap_offset(obj);
+
+	rk_obj = to_rockchip_obj(obj);
+
+	rockchip_gem_free_buf(rk_obj);
+	drm_gem_free_mmap_offset(obj);
+
+	drm_gem_object_release(obj);
+
+	kfree(rk_obj);
+}
+
+int rockchip_gem_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma)
+{
+	struct rockchip_gem_object *rk_obj = to_rockchip_obj(obj);
+	struct drm_device *drm = obj->dev;
+	unsigned long vm_size;
+
+	vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP;
+	vm_size = vma->vm_end - vma->vm_start;
+
+	if (vm_size > obj->size)
+		return -EINVAL;
+
+	return dma_mmap_attrs(drm->dev, vma, rk_obj->kvaddr, rk_obj->dma_addr,
+			     obj->size, &rk_obj->dma_attrs);
+}
+
+/*
+ * rockchip_gem_create_with_handle - allocate an object with the given
+ * size and create a gem handle on it
+ *
+ * returns a struct rockchip_gem_object* on success or ERR_PTR values
+ * on failure.
+ */
+static struct rockchip_gem_object *
+rockchip_gem_create_with_handle(struct drm_file *file_priv,
+				struct drm_device *drm, unsigned int size,
+				unsigned int *handle)
+{
+	struct rockchip_gem_object *rk_obj;
+	struct drm_gem_object *obj;
+	int ret;
+
+	rk_obj = rockchip_gem_create_object(drm, size);
+	if (IS_ERR(rk_obj))
+		return NULL;
+
+	obj = &rk_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, obj, handle);
+	if (ret)
+		goto err_handle_create;
+
+	/* drop reference from allocate - handle holds it now. */
+	drm_gem_object_unreference_unlocked(obj);
+
+	return rk_obj;
+
+err_handle_create:
+	rockchip_gem_free_object(obj);
+
+	return ERR_PTR(ret);
+}
+
+int rockchip_gem_dumb_map_offset(struct drm_file *file_priv,
+				 struct drm_device *dev, uint32_t handle,
+				 uint64_t *offset)
+{
+	struct drm_gem_object *obj;
+	int ret = 0;
+
+	mutex_lock(&dev->struct_mutex);
+
+	/*
+	 * get offset of memory allocated for drm framebuffer.
+	 * - this callback would be called by user application
+	 * with DRM_IOCTL_MODE_MAP_DUMB command.
+	 */
+
+	obj = drm_gem_object_lookup(dev, file_priv, handle);
+	if (!obj) {
+		DRM_ERROR("failed to lookup gem object.\n");
+		ret = -EINVAL;
+		goto unlock;
+	}
+
+	ret = drm_gem_create_mmap_offset(obj);
+	if (ret)
+		goto out;
+
+	*offset = drm_vma_node_offset_addr(&obj->vma_node);
+	DRM_DEBUG_KMS("offset = 0x%lx\n", (unsigned long)*offset);
+
+out:
+	drm_gem_object_unreference(obj);
+unlock:
+	mutex_unlock(&dev->struct_mutex);
+	return ret;
+}
+
+/*
+ * rockchip_gem_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 rockchip_gem_dumb_create(struct drm_file *file_priv,
+			     struct drm_device *dev,
+			     struct drm_mode_create_dumb *args)
+{
+	struct rockchip_gem_object *rk_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;
+
+	rk_obj = rockchip_gem_create_with_handle(file_priv, dev, args->size,
+						 &args->handle);
+
+	return PTR_ERR_OR_ZERO(rk_obj);
+}
+
+int rockchip_gem_get_ioctl(struct drm_device *dev, void *data,
+			   struct drm_file *file_priv)
+{
+	struct drm_rockchip_gem_info *args = data;
+	struct rockchip_gem_object *rk_obj;
+	struct drm_gem_object *obj;
+
+	mutex_lock(&dev->struct_mutex);
+
+	obj = drm_gem_object_lookup(dev, file_priv, args->handle);
+	if (!obj) {
+		DRM_ERROR("failed to lookup gem object.\n");
+		mutex_unlock(&dev->struct_mutex);
+		return -EINVAL;
+	}
+
+	rk_obj = to_rockchip_obj(obj);
+
+	args->flags = rk_obj->flags;
+	args->size = obj->size;
+
+	drm_gem_object_unreference(obj);
+	mutex_unlock(&dev->struct_mutex);
+
+	return 0;
+}
+
+int rockchip_gem_mmap_ioctl(struct drm_device *dev, void *data,
+			    struct drm_file *file_priv)
+{
+	struct drm_rockchip_gem_mmap *args = data;
+	struct drm_gem_object *obj;
+	unsigned long addr;
+
+	mutex_lock(&dev->struct_mutex);
+
+	obj = drm_gem_object_lookup(dev, file_priv, args->handle);
+	if (!obj) {
+		DRM_ERROR("failed to lookup gem object.\n");
+		mutex_unlock(&dev->struct_mutex);
+		return -EINVAL;
+	}
+
+	addr = vm_mmap(obj->filp, 0, args->size, PROT_READ | PROT_WRITE,
+		       MAP_SHARED, 0);
+
+	drm_gem_object_unreference(obj);
+
+	if (IS_ERR_VALUE(addr)) {
+		mutex_unlock(&dev->struct_mutex);
+		return (int)addr;
+	}
+
+	mutex_unlock(&dev->struct_mutex);
+
+	args->mapped = addr;
+
+	DRM_DEBUG_KMS("mapped = 0x%lx\n", (unsigned long)args->mapped);
+
+	return 0;
+}
+
+int rockchip_gem_map_offset_ioctl(struct drm_device *drm, void *data,
+				  struct drm_file *file_priv)
+{
+	struct drm_rockchip_gem_map_off *args = data;
+
+	return rockchip_gem_dumb_map_offset(file_priv, drm, args->handle,
+					    &args->offset);
+}
+
+int rockchip_gem_create_ioctl(struct drm_device *dev, void *data,
+			      struct drm_file *file_priv)
+{
+	struct drm_rockchip_gem_create *args = data;
+	struct rockchip_gem_object *rk_obj;
+
+	rk_obj = rockchip_gem_create_with_handle(file_priv, dev, args->size,
+						 &args->handle);
+	return PTR_ERR_OR_ZERO(rk_obj);
+}
+
+/*
+ * Allocate a sg_table for this GEM object.
+ * Note: Both the table's contents, and the sg_table itself must be freed by
+ *       the caller.
+ * Returns a pointer to the newly allocated sg_table, or an ERR_PTR() error.
+ */
+struct sg_table *rockchip_gem_prime_get_sg_table(struct drm_gem_object *obj)
+{
+	struct rockchip_gem_object *rk_obj = to_rockchip_obj(obj);
+	struct drm_device *drm = obj->dev;
+	struct sg_table *sgt = NULL;
+	int ret;
+
+	sgt = kzalloc(sizeof(*sgt), GFP_KERNEL);
+	if (!sgt)
+		return ERR_PTR(-ENOMEM);
+
+	ret = dma_get_sgtable_attrs(drm->dev, sgt, rk_obj->kvaddr,
+				    rk_obj->dma_addr, obj->size,
+				    &rk_obj->dma_attrs);
+	if (ret) {
+		DRM_ERROR("failed to allocate sgt, %d\n", ret);
+		kfree(sgt);
+		return ERR_PTR(ret);
+	}
+
+	return sgt;
+}
+
+struct drm_gem_object *
+rockchip_gem_prime_import_sg_table(struct drm_device *dev, size_t size,
+				   struct sg_table *sgt)
+{
+	struct rockchip_gem_object *rk_obj;
+
+	if (sgt->nents != 1)
+		return ERR_PTR(-EINVAL);
+
+	rk_obj = rockchip_gem_create_object(dev, size);
+	if (IS_ERR(rk_obj))
+		return ERR_PTR(-ENOMEM);
+
+	return &rk_obj->base;
+}
+
+void *rockchip_gem_prime_vmap(struct drm_gem_object *obj)
+{
+	struct rockchip_gem_object *rk_obj = to_rockchip_obj(obj);
+
+	return rk_obj->kvaddr;
+}
+
+void rockchip_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr)
+{
+	/* Nothing to do */
+}
+
+int rockchip_gem_prime_mmap(struct drm_gem_object *obj,
+			    struct vm_area_struct *vma)
+{
+	struct drm_device *dev = obj->dev;
+	int ret;
+
+	mutex_lock(&dev->struct_mutex);
+	ret = drm_gem_mmap_obj(obj, obj->size, vma);
+	mutex_unlock(&dev->struct_mutex);
+
+	return ret;
+}
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_gem.h b/drivers/gpu/drm/rockchip/rockchip_drm_gem.h
new file mode 100644
index 0000000..7f9eb49
--- /dev/null
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_gem.h
@@ -0,0 +1,76 @@ 
+/*
+ * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
+ * Author:Mark Yao <mark.yao@rock-chips.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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.
+ */
+
+#ifndef _ROCKCHIP_DRM_GEM_H
+#define _ROCKCHIP_DRM_GEM_H
+
+#define to_rockchip_obj(x) container_of(x, struct rockchip_gem_object, base)
+
+struct rockchip_gem_object {
+	struct drm_gem_object base;
+	unsigned int flags;
+
+	void *kvaddr;
+	dma_addr_t dma_addr;
+	struct dma_attrs dma_attrs;
+};
+
+struct sg_table *rockchip_gem_prime_get_sg_table(struct drm_gem_object *obj);
+struct drm_gem_object *
+rockchip_gem_prime_import_sg_table(struct drm_device *dev, size_t size,
+				   struct sg_table *sgt);
+void *rockchip_gem_prime_vmap(struct drm_gem_object *obj);
+void rockchip_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
+int rockchip_gem_prime_mmap(struct drm_gem_object *obj,
+			    struct vm_area_struct *vma);
+
+/* mmap a gem object to userspace. */
+int rockchip_gem_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma);
+
+struct rockchip_gem_object *
+	rockchip_gem_create_object(struct drm_device *drm, unsigned int size);
+
+void rockchip_gem_free_object(struct drm_gem_object *obj);
+
+int rockchip_gem_dumb_create(struct drm_file *file_priv,
+			     struct drm_device *dev,
+			     struct drm_mode_create_dumb *args);
+int rockchip_gem_dumb_map_offset(struct drm_file *file_priv,
+				 struct drm_device *dev, uint32_t handle,
+				 uint64_t *offset);
+int rockchip_gem_map_offset_ioctl(struct drm_device *drm, void *data,
+				  struct drm_file *file_priv);
+/*
+ * request gem object creation and buffer allocation as the size
+ * that it is calculated with framebuffer information such as width,
+ * height and bpp.
+ */
+int rockchip_gem_create_ioctl(struct drm_device *dev, void *data,
+			      struct drm_file *file_priv);
+
+/* get buffer offset to map to user space. */
+int rockchip_gem_map_offset_ioctl(struct drm_device *dev, void *data,
+				  struct drm_file *file_priv);
+
+/*
+ * mmap the physically continuous memory that a gem object contains
+ * to user space.
+ */
+int rockchip_gem_mmap_ioctl(struct drm_device *dev, void *data,
+			    struct drm_file *file_priv);
+
+/* get buffer information to memory region allocated by gem. */
+int rockchip_gem_get_ioctl(struct drm_device *dev, void *data,
+			   struct drm_file *file_priv);
+#endif /* _ROCKCHIP_DRM_GEM_H */
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
new file mode 100644
index 0000000..d2ec4d5
--- /dev/null
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -0,0 +1,1372 @@ 
+/*
+ * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
+ * Author:Mark Yao <mark.yao@rock-chips.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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_crtc_helper.h>
+
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/component.h>
+
+#include <linux/reset.h>
+#include <linux/iommu.h>
+#include <linux/delay.h>
+#include <drm/rockchip_drm.h>
+
+#include <video/of_display_timing.h>
+#include <video/of_videomode.h>
+
+#include "rockchip_drm_drv.h"
+#include "rockchip_drm_fbdev.h"
+#include "rockchip_drm_gem.h"
+#include "rockchip_drm_fb.h"
+#include "rockchip_drm_vop.h"
+
+#define VOP_DEFAULT_FRAMERATE	60
+#define VOP_MAX_WIN_SUPPORT	5
+#define VOP_DEFAULT_CURSOR	1
+#define VOP_REG(off, _mask, s) \
+		{.offset = off, \
+		 .mask = _mask, \
+		 .shift = s,}
+
+#define __REG_SET(x, off, mask, shift, v) \
+		vop_mask_write(x, off, (mask) << shift, (v) << shift)
+
+#define REG_SET(x, base, reg, v) \
+		__REG_SET(x, base + reg.offset, reg.mask, reg.shift, v)
+
+#define VOP_WIN_SET(x, win, name, v) \
+		REG_SET(x, win->base, win->phy->name, v)
+#define VOP_CTRL_SET(x, name, v) \
+		REG_SET(x, 0, (x)->data->ctrl->name, v)
+
+#define VOP_WIN_GET_YRGBADDR(ctx, win) \
+		vop_readl(ctx, win->base + win->phy->yrgb_mst.offset)
+
+#define to_vop_ctx(x) container_of(x, struct vop_context, crtc)
+#define to_rockchip_plane(x) container_of(x, struct rockchip_plane, base)
+
+struct rockchip_plane {
+	int id;
+	struct drm_plane base;
+	const struct vop_win *win;
+	struct vop_context *ctx;
+
+	uint32_t pending_yrgb_mst;
+	struct drm_framebuffer *front_fb;
+	struct drm_framebuffer *pending_fb;
+	bool enabled;
+};
+
+struct vop_context {
+	struct device *dev;
+	struct drm_device *drm_dev;
+	struct drm_crtc crtc;
+	struct drm_pending_vblank_event *event;
+	struct vop_driver *drv;
+	unsigned int dpms;
+	unsigned int win_mask;
+	wait_queue_head_t wait_vsync_queue;
+	atomic_t wait_vsync_event;
+
+	struct workqueue_struct *vsync_wq;
+	struct work_struct vsync_work;
+
+	/* mutex vsync_ work */
+	struct mutex vsync_mutex;
+	bool vsync_work_pending;
+
+	struct vop_driver_data *data;
+
+	uint32_t *regsbak;
+	void __iomem *regs;
+
+	/* physical map length of vop register */
+	uint32_t len;
+
+	/* one time only one process allowed to config the register */
+	spinlock_t reg_lock;
+	/* lock vop irq reg */
+	spinlock_t irq_lock;
+
+	unsigned int irq;
+
+	/* vop AHP clk */
+	struct clk *hclk;
+	/* vop dclk */
+	struct clk *dclk;
+	/* vop share memory frequency */
+	struct clk *aclk;
+	uint32_t pixclock;
+
+	int pipe;
+	bool clk_on;
+};
+
+enum vop_data_format {
+	VOP_FMT_ARGB8888 = 0,
+	VOP_FMT_RGB888,
+	VOP_FMT_RGB565,
+	VOP_FMT_YUV420SP = 4,
+	VOP_FMT_YUV422SP,
+	VOP_FMT_YUV444SP,
+};
+
+struct vop_reg_data {
+	uint32_t offset;
+	uint32_t value;
+};
+
+struct vop_reg {
+	uint32_t offset;
+	uint32_t shift;
+	uint32_t mask;
+};
+
+struct vop_ctrl {
+	struct vop_reg standby;
+	struct vop_reg gate_en;
+	struct vop_reg mmu_en;
+	struct vop_reg rgb_en;
+	struct vop_reg edp_en;
+	struct vop_reg hdmi_en;
+	struct vop_reg mipi_en;
+	struct vop_reg out_mode;
+	struct vop_reg dither_down;
+	struct vop_reg dither_up;
+	struct vop_reg pin_pol;
+
+	struct vop_reg htotal_pw;
+	struct vop_reg hact_st_end;
+	struct vop_reg vtotal_pw;
+	struct vop_reg vact_st_end;
+	struct vop_reg hpost_st_end;
+	struct vop_reg vpost_st_end;
+};
+
+struct vop_win_phy {
+	const uint32_t *data_formats;
+	uint32_t nformats;
+
+	struct vop_reg enable;
+	struct vop_reg format;
+	struct vop_reg act_info;
+	struct vop_reg dsp_info;
+	struct vop_reg dsp_st;
+	struct vop_reg yrgb_mst;
+	struct vop_reg uv_mst;
+	struct vop_reg yrgb_vir;
+	struct vop_reg uv_vir;
+
+	struct vop_reg dst_alpha_ctl;
+	struct vop_reg src_alpha_ctl;
+};
+
+struct vop_win {
+	uint32_t base;
+	const struct vop_win_phy *phy;
+};
+
+struct vop_driver_data {
+	const void *init_table;
+	int table_size;
+	const struct vop_ctrl *ctrl;
+	const struct vop_win *win[VOP_MAX_WIN_SUPPORT];
+};
+
+static const uint32_t formats_01[] = {
+	DRM_FORMAT_XRGB8888,
+	DRM_FORMAT_ARGB8888,
+	DRM_FORMAT_RGB888,
+	DRM_FORMAT_RGB565,
+	DRM_FORMAT_NV12,
+	DRM_FORMAT_NV16,
+	DRM_FORMAT_NV24,
+};
+
+static const uint32_t formats_234[] = {
+	DRM_FORMAT_XRGB8888,
+	DRM_FORMAT_ARGB8888,
+	DRM_FORMAT_RGB888,
+	DRM_FORMAT_RGB565,
+};
+
+static const struct vop_win_phy win01_data = {
+	.data_formats = formats_01,
+	.nformats = ARRAY_SIZE(formats_01),
+	.enable = VOP_REG(WIN0_CTRL0, 0x1, 0),
+	.format = VOP_REG(WIN0_CTRL0, 0x7, 1),
+	.act_info = VOP_REG(WIN0_ACT_INFO, 0x1fff1fff, 0),
+	.dsp_info = VOP_REG(WIN0_DSP_INFO, 0x1fff1fff, 0),
+	.dsp_st = VOP_REG(WIN0_DSP_ST, 0x1fff1fff, 0),
+	.yrgb_mst = VOP_REG(WIN0_YRGB_MST, 0xffffffff, 0),
+	.uv_mst = VOP_REG(WIN0_CBR_MST, 0xffffffff, 0),
+	.yrgb_vir = VOP_REG(WIN0_VIR, 0x3fff, 0),
+	.uv_vir = VOP_REG(WIN0_VIR, 0x3fff, 16),
+	.src_alpha_ctl = VOP_REG(WIN0_SRC_ALPHA_CTRL, 0xff, 0),
+	.dst_alpha_ctl = VOP_REG(WIN0_DST_ALPHA_CTRL, 0xff, 0),
+};
+
+static const struct vop_win_phy win23_data = {
+	.data_formats = formats_234,
+	.nformats = ARRAY_SIZE(formats_234),
+	.enable = VOP_REG(WIN2_CTRL0, 0x1, 0),
+	.format = VOP_REG(WIN2_CTRL0, 0x7, 1),
+	.dsp_info = VOP_REG(WIN2_DSP_INFO0, 0x0fff0fff, 0),
+	.dsp_st = VOP_REG(WIN2_DSP_ST0, 0x1fff1fff, 0),
+	.yrgb_mst = VOP_REG(WIN2_MST0, 0xffffffff, 0),
+	.yrgb_vir = VOP_REG(WIN2_VIR0_1, 0x1fff, 0),
+	.src_alpha_ctl = VOP_REG(WIN2_SRC_ALPHA_CTRL, 0xff, 0),
+	.dst_alpha_ctl = VOP_REG(WIN2_DST_ALPHA_CTRL, 0xff, 0),
+};
+
+static const struct vop_win_phy cursor_data = {
+	.data_formats = formats_234,
+	.nformats = ARRAY_SIZE(formats_234),
+	.enable = VOP_REG(HWC_CTRL0, 0x1, 0),
+	.format = VOP_REG(HWC_CTRL0, 0x7, 1),
+	.dsp_st = VOP_REG(HWC_DSP_ST, 0x1fff1fff, 0),
+	.yrgb_mst = VOP_REG(HWC_MST, 0xffffffff, 0),
+};
+
+static const struct vop_win win0 = {
+	.base = 0,
+	.phy = &win01_data,
+};
+
+static const struct vop_win win1 = {
+	.base = 0x40,
+	.phy = &win01_data,
+};
+
+static const struct vop_win win2 = {
+	.base = 0,
+	.phy = &win23_data,
+};
+
+static const struct vop_win win3 = {
+	.base = 0x50,
+	.phy = &win23_data,
+};
+
+static const struct vop_win win_cursor = {
+	.base = 0,
+	.phy = &cursor_data,
+};
+
+static const struct vop_ctrl ctrl_data = {
+	.standby = VOP_REG(SYS_CTRL, 0x1, 22),
+	.gate_en = VOP_REG(SYS_CTRL, 0x1, 23),
+	.mmu_en = VOP_REG(SYS_CTRL, 0x1, 20),
+	.rgb_en = VOP_REG(SYS_CTRL, 0x1, 12),
+	.hdmi_en = VOP_REG(SYS_CTRL, 0x1, 13),
+	.edp_en = VOP_REG(SYS_CTRL, 0x1, 14),
+	.mipi_en = VOP_REG(SYS_CTRL, 0x1, 15),
+	.dither_down = VOP_REG(DSP_CTRL1, 0xf, 1),
+	.dither_up = VOP_REG(DSP_CTRL1, 0x1, 6),
+	.out_mode = VOP_REG(DSP_CTRL0, 0xf, 0),
+	.pin_pol = VOP_REG(DSP_CTRL0, 0xf, 4),
+	.htotal_pw = VOP_REG(DSP_HTOTAL_HS_END, 0x1fff1fff, 0),
+	.hact_st_end = VOP_REG(DSP_HACT_ST_END, 0x1fff1fff, 0),
+	.vtotal_pw = VOP_REG(DSP_VTOTAL_VS_END, 0x1fff1fff, 0),
+	.vact_st_end = VOP_REG(DSP_VACT_ST_END, 0x1fff1fff, 0),
+	.hpost_st_end = VOP_REG(POST_DSP_HACT_INFO, 0x1fff1fff, 0),
+	.vpost_st_end = VOP_REG(POST_DSP_VACT_INFO, 0x1fff1fff, 0),
+};
+
+static const struct vop_reg_data vop_init_reg_table[] = {
+	{SYS_CTRL, 0x00801000},
+	{DSP_CTRL0, 0x00000000},
+	{WIN0_CTRL0, 0x00000080},
+	{WIN1_CTRL0, 0x00000080},
+};
+
+static const struct vop_driver_data rockchip_rk3288_vop = {
+	.init_table = vop_init_reg_table,
+	.table_size = ARRAY_SIZE(vop_init_reg_table),
+	.ctrl = &ctrl_data,
+	.win[0] = &win0,
+	.win[1] = &win1,
+	.win[2] = &win2,
+	.win[3] = &win3,
+	.win[4] = &win_cursor,
+};
+
+static const struct of_device_id vop_driver_dt_match[] = {
+	{ .compatible = "rockchip,rk3288-vop",
+	  .data = (void *)&rockchip_rk3288_vop },
+	{},
+};
+
+static inline void vop_writel(struct vop_context *ctx,
+			      uint32_t offset, uint32_t v)
+{
+	writel(v, ctx->regs + offset);
+	ctx->regsbak[offset >> 2] = v;
+}
+
+static inline uint32_t vop_readl(struct vop_context *ctx, uint32_t offset)
+{
+	return readl(ctx->regs + offset);
+}
+
+static inline void vop_cfg_done(struct vop_context *ctx)
+{
+	writel(0x01, ctx->regs + REG_CFG_DONE);
+}
+
+static inline void vop_mask_write(struct vop_context *ctx,
+				  uint32_t offset, uint32_t mask, uint32_t v)
+{
+	if (mask) {
+		uint32_t cached_val = ctx->regsbak[offset >> 2];
+
+		cached_val = (cached_val & ~mask) | v;
+		writel(cached_val, ctx->regs + offset);
+		ctx->regsbak[offset >> 2] = cached_val;
+	}
+}
+
+static inline struct vop_driver_data *vop_get_driver_data(struct device *dev)
+{
+	const struct of_device_id *of_id =
+			of_match_device(vop_driver_dt_match, dev);
+
+	return (struct vop_driver_data *)of_id->data;
+}
+
+static enum vop_data_format vop_convert_format(uint32_t format)
+{
+	switch (format) {
+	case DRM_FORMAT_XRGB8888:
+	case DRM_FORMAT_ARGB8888:
+		return VOP_FMT_ARGB8888;
+	case DRM_FORMAT_RGB888:
+		return VOP_FMT_RGB888;
+	case DRM_FORMAT_RGB565:
+		return VOP_FMT_RGB565;
+	case DRM_FORMAT_NV12:
+		return VOP_FMT_YUV420SP;
+	case DRM_FORMAT_NV16:
+		return VOP_FMT_YUV422SP;
+	case DRM_FORMAT_NV24:
+		return VOP_FMT_YUV444SP;
+	default:
+		DRM_ERROR("unsupport format[%08x]\n", format);
+		return -EINVAL;
+	}
+}
+
+static bool is_alpha_support(uint32_t format)
+{
+	switch (format) {
+	case DRM_FORMAT_ARGB8888:
+		return true;
+	default:
+		return false;
+	}
+}
+
+/* TODO(djkurtz): move generic 'setup slave rk_iommu' code somewhere common */
+int vop_iommu_init(struct vop_context *ctx)
+{
+	struct device *dev = ctx->dev;
+	struct device_node *np = dev->of_node;
+	struct platform_device *pd;
+	int count;
+	int ret;
+	struct of_phandle_args args;
+
+	/* Each VOP must have exactly one iommu node, with no args */
+	count = of_count_phandle_with_args(np, "iommus", "#iommu-cells");
+	if (count != 1) {
+		dev_err(dev, "of_count_phandle_with_args(%s) => %d\n",
+			np->full_name, count);
+		return -EINVAL;
+	}
+
+	ret = of_parse_phandle_with_args(np, "iommus", "#iommu-cells", 0,
+					 &args);
+	if (ret) {
+		dev_err(dev, "of_parse_phandle_with_args(%s) => %d\n",
+			np->full_name, ret);
+		return ret;
+	}
+	if (args.args_count != 0) {
+		dev_err(dev, "incorrect number of iommu params found for %s (found %d, expected 0)\n",
+			args.np->full_name, args.args_count);
+		return -EINVAL;
+	}
+
+	pd = of_find_device_by_node(args.np);
+	of_node_put(args.np);
+	if (!pd) {
+		dev_err(dev, "iommu %s not found\n", args.np->full_name);
+		return -EPROBE_DEFER;
+	}
+
+	/* TODO(djkurtz): handle multiple slave iommus for a single master */
+	dev->archdata.iommu = &pd->dev;
+
+	ret = rockchip_drm_dma_attach_device(ctx->drm_dev, dev);
+	if (ret) {
+		dev_err(dev, "failed to attach to drm dma mapping, %d\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static void vop_iommu_fini(struct vop_context *ctx)
+{
+	rockchip_drm_dma_detach_device(ctx->drm_dev, ctx->dev);
+}
+
+static int rockchip_plane_get_size(int start, unsigned length, unsigned last)
+{
+	int end = start + length;
+	int size = 0;
+
+	if (start <= 0) {
+		if (end > 0)
+			size = min_t(unsigned, end, last);
+	} else if (start <= last) {
+		size = min_t(unsigned, last - start, length);
+	}
+
+	return size;
+}
+
+static int vop_clk_enable(struct vop_context *ctx)
+{
+	int ret;
+
+	if (!ctx->clk_on) {
+		ret = clk_prepare_enable(ctx->hclk);
+		if (ret < 0) {
+			dev_err(ctx->dev, "failed to enable hclk\n");
+			return ret;
+		}
+
+		ret = clk_prepare_enable(ctx->dclk);
+		if (ret < 0) {
+			dev_err(ctx->dev, "failed to enable dclk\n");
+			goto err_dclk;
+		}
+
+		ret = clk_prepare_enable(ctx->aclk);
+		if (ret < 0) {
+			dev_err(ctx->dev, "failed to enable aclk\n");
+			goto err_aclk;
+		}
+		ctx->clk_on = true;
+	}
+
+	return ret;
+err_aclk:
+	clk_disable_unprepare(ctx->aclk);
+err_dclk:
+	clk_disable_unprepare(ctx->hclk);
+	return ret;
+}
+
+static void vop_clk_disable(struct vop_context *ctx)
+{
+	if (ctx->clk_on) {
+		clk_disable_unprepare(ctx->dclk);
+		clk_disable_unprepare(ctx->hclk);
+		clk_disable_unprepare(ctx->aclk);
+		ctx->clk_on = false;
+	}
+}
+
+static void vop_power_on(struct vop_context *ctx)
+{
+	if (vop_clk_enable(ctx) < 0) {
+		dev_err(ctx->dev, "failed to enable clks\n");
+		return;
+	}
+
+	spin_lock(&ctx->reg_lock);
+
+	VOP_CTRL_SET(ctx, standby, 0);
+
+	spin_unlock(&ctx->reg_lock);
+}
+
+static void vop_power_off(struct vop_context *ctx)
+{
+	spin_lock(&ctx->reg_lock);
+
+	VOP_CTRL_SET(ctx, standby, 1);
+
+	spin_unlock(&ctx->reg_lock);
+
+	vop_clk_disable(ctx);
+}
+
+static int rockchip_update_plane(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 rockchip_plane *rockchip_plane = to_rockchip_plane(plane);
+	const struct vop_win *win = rockchip_plane->win;
+	struct vop_context *ctx = to_vop_ctx(crtc);
+	struct drm_gem_object *obj;
+	struct rockchip_gem_object *rk_obj;
+	unsigned long offset;
+	unsigned int actual_w;
+	unsigned int actual_h;
+	unsigned int dsp_stx;
+	unsigned int dsp_sty;
+	unsigned int y_vir_stride;
+	dma_addr_t yrgb_mst;
+	enum vop_data_format format;
+	uint32_t val;
+	bool is_alpha;
+
+	if (!win) {
+		DRM_ERROR("can't find win data for vop, failed\n");
+		return -EINVAL;
+	}
+
+	obj = rockchip_fb_get_gem_obj(fb, 0);
+	if (!obj) {
+		DRM_ERROR("fail to get rockchip gem object from framebuffer\n");
+		return -EINVAL;
+	}
+
+	rk_obj = to_rockchip_obj(obj);
+
+	yrgb_mst = rk_obj->dma_addr;
+	if (yrgb_mst <= 0)
+		return -ENOMEM;
+
+	actual_w = rockchip_plane_get_size(crtc_x,
+					   crtc_w, crtc->mode.hdisplay);
+	actual_h = rockchip_plane_get_size(crtc_y,
+					   crtc_h, crtc->mode.vdisplay);
+	if (crtc_x < 0) {
+		if (actual_w)
+			src_x -= crtc_x;
+		crtc_x = 0;
+	}
+
+	if (crtc_y < 0) {
+		if (actual_h)
+			src_y -= crtc_y;
+		crtc_y = 0;
+	}
+
+	dsp_stx = crtc_x + crtc->mode.htotal - crtc->mode.hsync_start;
+	dsp_sty = crtc_y + crtc->mode.vtotal - crtc->mode.vsync_start;
+
+	offset = src_x * (fb->bits_per_pixel >> 3);
+	offset += src_y * fb->pitches[0];
+
+	y_vir_stride = fb->pitches[0] / (fb->bits_per_pixel >> 3);
+	is_alpha = is_alpha_support(fb->pixel_format);
+	format = vop_convert_format(fb->pixel_format);
+
+	spin_lock(&ctx->reg_lock);
+
+	VOP_WIN_SET(ctx, win, format, format);
+	VOP_WIN_SET(ctx, win, yrgb_vir, y_vir_stride);
+	yrgb_mst += offset;
+	VOP_WIN_SET(ctx, win, yrgb_mst, yrgb_mst);
+	VOP_WIN_SET(ctx, win, act_info,
+		    ((actual_h - 1) << 16) | (actual_w - 1));
+	VOP_WIN_SET(ctx, win, dsp_info,
+		    ((actual_h - 1) << 16) | (actual_w - 1));
+	VOP_WIN_SET(ctx, win, dsp_st, (dsp_sty << 16) | dsp_stx);
+	if (is_alpha) {
+		VOP_WIN_SET(ctx, win, dst_alpha_ctl,
+			    DST_FACTOR_M0(ALPHA_SRC_INVERSE));
+		val = SRC_ALPHA_EN(1) | SRC_COLOR_M0(ALPHA_SRC_PRE_MUL) |
+			SRC_ALPHA_M0(ALPHA_STRAIGHT) |
+			SRC_BLEND_M0(ALPHA_PER_PIX) |
+			SRC_ALPHA_CAL_M0(ALPHA_NO_SATURATION) |
+			SRC_FACTOR_M0(ALPHA_ONE);
+		VOP_WIN_SET(ctx, win, src_alpha_ctl, val);
+	} else {
+		VOP_WIN_SET(ctx, win, src_alpha_ctl, SRC_ALPHA_EN(0));
+	}
+
+	VOP_WIN_SET(ctx, win, enable, 1);
+
+	spin_unlock(&ctx->reg_lock);
+
+	mutex_lock(&ctx->vsync_mutex);
+
+	/*
+	 * Because the buffer set to vop take effect at frame start time,
+	 * we need make sure old buffer is not in use before we release
+	 * it.
+	 * reference the framebuffer, and unference it when it swap out of vop.
+	 */
+	if (fb != rockchip_plane->front_fb) {
+		drm_framebuffer_reference(fb);
+		rockchip_plane->pending_fb = fb;
+		rockchip_plane->pending_yrgb_mst = yrgb_mst;
+		ctx->vsync_work_pending = true;
+	}
+	rockchip_plane->enabled = true;
+
+	mutex_unlock(&ctx->vsync_mutex);
+
+	spin_lock(&ctx->reg_lock);
+	vop_cfg_done(ctx);
+	spin_unlock(&ctx->reg_lock);
+
+	return 0;
+}
+
+static int rockchip_disable_plane(struct drm_plane *plane)
+{
+	struct rockchip_plane *rockchip_plane = to_rockchip_plane(plane);
+	struct vop_context *ctx = rockchip_plane->ctx;
+	const struct vop_win *win = rockchip_plane->win;
+
+	spin_lock(&ctx->reg_lock);
+
+	VOP_WIN_SET(ctx, win, enable, 0);
+	vop_cfg_done(ctx);
+
+	spin_unlock(&ctx->reg_lock);
+
+	mutex_lock(&ctx->vsync_mutex);
+
+	/*
+	* clear the pending framebuffer and set vsync_work_pending true,
+	* so that the framebuffer will unref at the next vblank.
+	*/
+	if (rockchip_plane->pending_fb) {
+		drm_framebuffer_unreference(rockchip_plane->pending_fb);
+		rockchip_plane->pending_fb = NULL;
+	}
+
+	rockchip_plane->enabled = false;
+	ctx->vsync_work_pending = true;
+
+	mutex_unlock(&ctx->vsync_mutex);
+
+	return 0;
+}
+
+static void rockchip_plane_destroy(struct drm_plane *plane)
+{
+	struct rockchip_plane *rockchip_plane = to_rockchip_plane(plane);
+	struct vop_context *ctx = rockchip_plane->ctx;
+
+	rockchip_disable_plane(plane);
+	drm_plane_cleanup(plane);
+	ctx->win_mask &= ~(1 << rockchip_plane->id);
+	kfree(rockchip_plane);
+}
+
+static const struct drm_plane_funcs rockchip_plane_funcs = {
+	.update_plane = rockchip_update_plane,
+	.disable_plane = rockchip_disable_plane,
+	.destroy = rockchip_plane_destroy,
+};
+
+struct drm_plane *rockchip_plane_init(struct vop_context *ctx,
+				      unsigned long possible_crtcs,
+				      enum drm_plane_type type)
+{
+	struct rockchip_plane *rockchip_plane;
+	struct vop_driver_data *vop_data = ctx->data;
+	const struct vop_win *win;
+	int i;
+	int err;
+
+	rockchip_plane = kzalloc(sizeof(*rockchip_plane), GFP_KERNEL);
+	if (!rockchip_plane)
+		return NULL;
+
+	for (i = 0; i < VOP_MAX_WIN_SUPPORT; i++) {
+		if (!(ctx->win_mask & (1 << i))) {
+			win = vop_data->win[i];
+			break;
+		}
+	}
+
+	if (VOP_MAX_WIN_SUPPORT == i) {
+		DRM_ERROR("failed to find win\n");
+		kfree(rockchip_plane);
+		return NULL;
+	}
+
+	ctx->win_mask |= (1 << i);
+	rockchip_plane->id = i;
+	rockchip_plane->win = win;
+	rockchip_plane->ctx = ctx;
+
+	err = drm_universal_plane_init(ctx->drm_dev, &rockchip_plane->base,
+				       possible_crtcs, &rockchip_plane_funcs,
+				       win->phy->data_formats,
+				       win->phy->nformats, type);
+	if (err) {
+		DRM_ERROR("failed to initialize plane\n");
+		kfree(rockchip_plane);
+		return NULL;
+	}
+
+	return &rockchip_plane->base;
+}
+
+int rockchip_drm_crtc_enable_vblank(struct drm_device *dev, int pipe)
+{
+	struct vop_context *ctx = to_vop_ctx(rockchip_find_crtc(dev, pipe));
+	unsigned long flags;
+
+	if (ctx->dpms != DRM_MODE_DPMS_ON)
+		return -EPERM;
+
+	spin_lock_irqsave(&ctx->irq_lock, flags);
+
+	vop_mask_write(ctx, INTR_CTRL0, LINE_FLAG_INTR_MASK,
+		       LINE_FLAG_INTR_EN(1));
+
+	spin_unlock_irqrestore(&ctx->irq_lock, flags);
+
+	return 0;
+}
+
+void rockchip_drm_crtc_disable_vblank(struct drm_device *dev, int pipe)
+{
+	struct vop_context *ctx = to_vop_ctx(rockchip_find_crtc(dev, pipe));
+	unsigned long flags;
+
+	if (ctx->dpms != DRM_MODE_DPMS_ON)
+		return;
+	spin_lock_irqsave(&ctx->irq_lock, flags);
+	vop_mask_write(ctx, INTR_CTRL0, LINE_FLAG_INTR_MASK,
+		       LINE_FLAG_INTR_EN(0));
+	spin_unlock_irqrestore(&ctx->irq_lock, flags);
+}
+
+static void rockchip_drm_crtc_dpms(struct drm_crtc *crtc, int mode)
+{
+	struct vop_context *ctx = to_vop_ctx(crtc);
+
+	DRM_DEBUG_KMS("crtc[%d] mode[%d]\n", crtc->base.id, mode);
+
+	if (ctx->dpms == mode) {
+		DRM_DEBUG_KMS("desired dpms mode is same as previous one.\n");
+		return;
+	}
+	if (mode > DRM_MODE_DPMS_ON) {
+		/* wait for the completion of page flip. */
+		if (!wait_event_timeout(ctx->wait_vsync_queue,
+					!atomic_read(&ctx->wait_vsync_event),
+					HZ/20))
+			DRM_DEBUG_KMS("vblank wait timed out.\n");
+		drm_vblank_off(crtc->dev, ctx->pipe);
+	}
+
+	switch (mode) {
+	case DRM_MODE_DPMS_ON:
+		vop_power_on(ctx);
+		break;
+	case DRM_MODE_DPMS_STANDBY:
+	case DRM_MODE_DPMS_SUSPEND:
+	case DRM_MODE_DPMS_OFF:
+		vop_power_off(ctx);
+		break;
+	default:
+		DRM_DEBUG_KMS("unspecified mode %d\n", mode);
+		break;
+	}
+
+	ctx->dpms = mode;
+}
+
+static void rockchip_drm_crtc_prepare(struct drm_crtc *crtc)
+{
+	rockchip_drm_crtc_dpms(crtc, DRM_MODE_DPMS_ON);
+}
+
+static bool rockchip_drm_crtc_mode_fixup(struct drm_crtc *crtc,
+					 const struct drm_display_mode *mode,
+					 struct drm_display_mode *adjusted_mode)
+{
+	/* just do dummy now */
+
+	return true;
+}
+
+static int rockchip_drm_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
+					   struct drm_framebuffer *old_fb);
+
+static int rockchip_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 *fb)
+{
+	struct vop_context *ctx = to_vop_ctx(crtc);
+	u16 hsync_len = adjusted_mode->hsync_end - adjusted_mode->hsync_start;
+	u16 left_margin = adjusted_mode->htotal - adjusted_mode->hsync_end;
+	u16 vsync_len = adjusted_mode->vsync_end - adjusted_mode->vsync_start;
+	u16 upper_margin = adjusted_mode->vtotal - adjusted_mode->vsync_end;
+	u16 hdisplay = adjusted_mode->hdisplay;
+	u16 vdisplay = adjusted_mode->vdisplay;
+	u16 htotal = adjusted_mode->htotal;
+	u16 vtotal = adjusted_mode->vtotal;
+	struct rockchip_display_mode *priv_mode =
+					(void *)adjusted_mode->private;
+	unsigned long flags;
+	int ret;
+	uint32_t val;
+
+	/* nothing to do if we haven't set the mode yet */
+	if (adjusted_mode->htotal == 0 || adjusted_mode->vtotal == 0)
+		return -EINVAL;
+
+	if (!priv_mode) {
+		DRM_ERROR("fail to found display output type[%d]\n",
+			  priv_mode->out_type);
+		return -EINVAL;
+	}
+
+	ret = rockchip_drm_crtc_mode_set_base(crtc, x, y, fb);
+	if (ret)
+		return ret;
+
+	switch (priv_mode->out_type) {
+	case ROCKCHIP_DISPLAY_TYPE_RGB:
+	case ROCKCHIP_DISPLAY_TYPE_LVDS:
+		VOP_CTRL_SET(ctx, rgb_en, 1);
+		VOP_CTRL_SET(ctx, out_mode, ROCKCHIP_OUTFACE_P888);
+		break;
+	case ROCKCHIP_DISPLAY_TYPE_EDP:
+		VOP_CTRL_SET(ctx, edp_en, 1);
+		VOP_CTRL_SET(ctx, out_mode, ROCKCHIP_OUTFACE_AAAA);
+		break;
+	case ROCKCHIP_DISPLAY_TYPE_HDMI:
+		VOP_CTRL_SET(ctx, out_mode, ROCKCHIP_OUTFACE_AAAA);
+		VOP_CTRL_SET(ctx, hdmi_en, 1);
+		break;
+	default:
+		DRM_ERROR("unsupport out type[%d]\n", priv_mode->out_type);
+		return -EINVAL;
+	};
+
+	val = 0x8;
+	val |= (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC) ? 1 : 0;
+	val |= (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC) ? (1 << 1) : 0;
+	VOP_CTRL_SET(ctx, pin_pol, val);
+
+	VOP_CTRL_SET(ctx, htotal_pw, (htotal << 16) | hsync_len);
+	val = (hsync_len + left_margin) << 16;
+	val |= hsync_len + left_margin + hdisplay;
+	VOP_CTRL_SET(ctx, hact_st_end, val);
+	VOP_CTRL_SET(ctx, hpost_st_end, val);
+
+	VOP_CTRL_SET(ctx, vtotal_pw, (vtotal << 16) | vsync_len);
+	val = (vsync_len + upper_margin) << 16;
+	val |= vsync_len + upper_margin + vdisplay;
+	VOP_CTRL_SET(ctx, vact_st_end, val);
+	VOP_CTRL_SET(ctx, vpost_st_end, val);
+
+	spin_lock_irqsave(&ctx->irq_lock, flags);
+
+	vop_mask_write(ctx, INTR_CTRL0, DSP_LINE_NUM_MASK,
+		       DSP_LINE_NUM(vsync_len + upper_margin + vdisplay));
+
+	spin_unlock_irqrestore(&ctx->irq_lock, flags);
+
+	clk_set_rate(ctx->dclk, adjusted_mode->clock * 1000);
+
+	return 0;
+}
+
+static int rockchip_drm_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
+					   struct drm_framebuffer *old_fb)
+{
+	unsigned int crtc_w;
+	unsigned int crtc_h;
+	int ret;
+
+	crtc_w = crtc->primary->fb->width - crtc->x;
+	crtc_h = crtc->primary->fb->height - crtc->y;
+
+	ret = rockchip_update_plane(crtc->primary, crtc, crtc->primary->fb, 0,
+				    0, crtc_w, crtc_h, crtc->x, crtc->y, crtc_w,
+				    crtc_h);
+	if (ret < 0) {
+		DRM_ERROR("fail to update plane\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static void rockchip_drm_crtc_commit(struct drm_crtc *crtc)
+{
+	/* just do dummy now */
+}
+
+static const struct drm_crtc_helper_funcs rockchip_crtc_helper_funcs = {
+	.dpms = rockchip_drm_crtc_dpms,
+	.prepare = rockchip_drm_crtc_prepare,
+	.mode_fixup = rockchip_drm_crtc_mode_fixup,
+	.mode_set = rockchip_drm_crtc_mode_set,
+	.mode_set_base = rockchip_drm_crtc_mode_set_base,
+	.commit = rockchip_drm_crtc_commit,
+};
+
+static int rockchip_drm_crtc_page_flip(struct drm_crtc *crtc,
+				       struct drm_framebuffer *fb,
+				       struct drm_pending_vblank_event *event,
+				       uint32_t page_flip_flags)
+{
+	struct drm_device *dev = crtc->dev;
+	struct vop_context *ctx = to_vop_ctx(crtc);
+	struct drm_framebuffer *old_fb = crtc->primary->fb;
+	unsigned int crtc_w;
+	unsigned int crtc_h;
+	int ret;
+
+	/* when the page flip is requested, crtc's dpms should be on */
+	if (ctx->dpms > DRM_MODE_DPMS_ON) {
+		DRM_DEBUG("failed page flip request at dpms[%d].\n", ctx->dpms);
+		return 0;
+	}
+
+	ret = drm_vblank_get(dev, ctx->pipe);
+	if (ret) {
+		DRM_DEBUG("failed to acquire vblank counter\n");
+		return ret;
+	}
+
+	spin_lock_irq(&dev->event_lock);
+	if (ctx->event) {
+		spin_unlock_irq(&dev->event_lock);
+		DRM_ERROR("already pending flip!\n");
+		return -EBUSY;
+	}
+	ctx->event = event;
+	atomic_set(&ctx->wait_vsync_event, 1);
+	spin_unlock_irq(&dev->event_lock);
+
+	crtc->primary->fb = fb;
+	crtc_w = crtc->primary->fb->width - crtc->x;
+	crtc_h = crtc->primary->fb->height - crtc->y;
+
+	ret = rockchip_update_plane(crtc->primary, crtc, fb, 0, 0, crtc_w,
+				    crtc_h, crtc->x, crtc->y, crtc_w, crtc_h);
+	if (ret) {
+		crtc->primary->fb = old_fb;
+
+		spin_lock_irq(&dev->event_lock);
+		drm_vblank_put(dev, ctx->pipe);
+		atomic_set(&ctx->wait_vsync_event, 0);
+		ctx->event = NULL;
+		spin_unlock_irq(&dev->event_lock);
+	}
+
+	return ret;
+}
+
+void rockchip_drm_crtc_finish_pageflip(struct drm_device *dev, int pipe)
+{
+	struct rockchip_drm_private *dev_priv = dev->dev_private;
+	struct drm_crtc *drm_crtc = dev_priv->crtc[pipe];
+	struct vop_context *ctx;
+	unsigned long flags;
+
+	if (!drm_crtc)
+		return;
+
+	ctx = to_vop_ctx(drm_crtc);
+
+	spin_lock_irqsave(&dev->event_lock, flags);
+
+	if (ctx->event) {
+		drm_send_vblank_event(dev, -1, ctx->event);
+		drm_vblank_put(dev, pipe);
+		atomic_set(&ctx->wait_vsync_event, 0);
+		wake_up(&ctx->wait_vsync_queue);
+		ctx->event = NULL;
+	}
+
+	spin_unlock_irqrestore(&dev->event_lock, flags);
+}
+
+void rockchip_drm_crtc_cancel_pending_flip(struct drm_device *dev)
+{
+	int i;
+
+	for (i = 0; i < dev->num_crtcs; i++)
+		rockchip_drm_crtc_finish_pageflip(dev, i);
+}
+
+static void rockchip_drm_crtc_destroy(struct drm_crtc *crtc)
+{
+	struct vop_context *ctx = to_vop_ctx(crtc);
+	struct rockchip_drm_private *private = crtc->dev->dev_private;
+
+	private->crtc[ctx->pipe] = NULL;
+	drm_crtc_cleanup(crtc);
+}
+
+static const struct drm_crtc_funcs rockchip_crtc_funcs = {
+	.set_config = drm_crtc_helper_set_config,
+	.page_flip = rockchip_drm_crtc_page_flip,
+	.destroy = rockchip_drm_crtc_destroy,
+};
+
+static void rockchip_vsync_worker(struct work_struct *work)
+{
+	struct vop_context *ctx = container_of(work, struct vop_context,
+					       vsync_work);
+	struct drm_device *drm = ctx->drm_dev;
+	struct rockchip_drm_private *dev_priv = drm->dev_private;
+	struct drm_crtc *crtc = dev_priv->crtc[ctx->pipe];
+	struct rockchip_plane *rockchip_plane;
+	struct drm_plane *plane;
+	uint32_t yrgb_mst;
+
+	mutex_lock(&ctx->vsync_mutex);
+
+	ctx->vsync_work_pending = false;
+
+	list_for_each_entry(plane, &drm->mode_config.plane_list, head) {
+		rockchip_plane = to_rockchip_plane(plane);
+
+		if (rockchip_plane->ctx != ctx)
+			continue;
+		if (rockchip_plane->enabled && !rockchip_plane->pending_fb)
+			continue;
+		if (!rockchip_plane->enabled && !rockchip_plane->front_fb)
+			continue;
+		/*
+		 * make sure the yrgb_mst take effect, so that
+		 * we can unreference the old framebuffer.
+		 */
+		yrgb_mst = VOP_WIN_GET_YRGBADDR(ctx, rockchip_plane->win);
+		if (rockchip_plane->pending_yrgb_mst != yrgb_mst) {
+			/*
+			 * some plane no complete, unref at next vblank
+			 */
+			ctx->vsync_work_pending = true;
+			continue;
+		}
+
+		/*
+		 * drm_framebuffer_unreference maybe call iommu unmap,
+		 * and iommu not allow unmap buffer at irq context,
+		 * so we do drm_framebuffer_unreference at queue_work.
+		 */
+		if (rockchip_plane->front_fb)
+			drm_framebuffer_unreference(rockchip_plane->front_fb);
+
+		rockchip_plane->front_fb = rockchip_plane->pending_fb;
+		rockchip_plane->pending_fb = NULL;
+
+		/*
+		 * if primary plane flip complete, sending the event to
+		 * userspace
+		 */
+		if (&rockchip_plane->base == crtc->primary)
+			rockchip_drm_crtc_finish_pageflip(ctx->drm_dev,
+							  ctx->pipe);
+	}
+
+	mutex_unlock(&ctx->vsync_mutex);
+}
+
+static irqreturn_t rockchip_vop_isr(int irq, void *data)
+{
+	struct vop_context *ctx = data;
+	uint32_t intr0_reg;
+	unsigned long flags;
+
+	intr0_reg = vop_readl(ctx, INTR_CTRL0);
+	if (intr0_reg & LINE_FLAG_INTR) {
+		spin_lock_irqsave(&ctx->irq_lock, flags);
+		vop_writel(ctx, INTR_CTRL0, intr0_reg | LINE_FLAG_INTR_CLR);
+		spin_unlock_irqrestore(&ctx->irq_lock, flags);
+	} else {
+		return IRQ_NONE;
+	}
+
+	drm_handle_vblank(ctx->drm_dev, ctx->pipe);
+	if (ctx->vsync_work_pending)
+		queue_work(ctx->vsync_wq, &ctx->vsync_work);
+
+	return IRQ_HANDLED;
+}
+
+static int vop_create_crtc(struct vop_context *ctx)
+{
+	struct device *dev = ctx->dev;
+	struct drm_device *drm_dev = ctx->drm_dev;
+	struct drm_plane *primary, *cursor;
+	unsigned long possible_crtcs;
+	struct drm_crtc *crtc;
+	int ret;
+	int nr;
+
+	ctx->win_mask = 0;
+	crtc = &ctx->crtc;
+
+	ret = rockchip_drm_add_crtc(drm_dev, crtc, dev->of_node);
+	if (ret < 0)
+		return ret;
+	ctx->pipe = ret;
+
+	possible_crtcs = (1 << ctx->pipe);
+
+	primary = rockchip_plane_init(ctx, possible_crtcs,
+				      DRM_PLANE_TYPE_PRIMARY);
+	if (!primary) {
+		DRM_ERROR("fail to init primary plane\n");
+		return -EINVAL;
+	}
+
+	for (nr = 1; nr < ROCKCHIP_MAX_PLANE; nr++) {
+		if (nr == VOP_DEFAULT_CURSOR) {
+			cursor = rockchip_plane_init(ctx, possible_crtcs,
+						     DRM_PLANE_TYPE_CURSOR);
+			if (!cursor) {
+				DRM_ERROR("fail to init cursor plane\n");
+				return -EINVAL;
+			}
+		} else {
+			struct drm_plane *plane;
+
+			plane = rockchip_plane_init(ctx, possible_crtcs,
+						    DRM_PLANE_TYPE_OVERLAY);
+			if (!plane) {
+				DRM_ERROR("fail to init overlay plane\n");
+				return -EINVAL;
+			}
+		}
+	}
+
+	drm_crtc_init_with_planes(drm_dev, crtc, primary, cursor,
+				  &rockchip_crtc_funcs);
+	drm_crtc_helper_add(crtc, &rockchip_crtc_helper_funcs);
+
+	return 0;
+}
+
+static int rockchip_vop_initial(struct vop_context *ctx)
+{
+	struct vop_driver_data *vop_data = ctx->data;
+	const struct vop_reg_data *init_table = vop_data->init_table;
+	struct reset_control *rst;
+	int i, ret;
+
+	ctx->hclk = devm_clk_get(ctx->dev, "hclk_vop");
+	if (IS_ERR(ctx->hclk)) {
+		dev_err(ctx->dev, "failed to get hclk source\n");
+		return PTR_ERR(ctx->hclk);
+	}
+	ctx->aclk = devm_clk_get(ctx->dev, "aclk_vop");
+	if (IS_ERR(ctx->aclk)) {
+		dev_err(ctx->dev, "failed to get aclk source\n");
+		return PTR_ERR(ctx->aclk);
+	}
+	ctx->dclk = devm_clk_get(ctx->dev, "dclk_vop");
+	if (IS_ERR(ctx->dclk)) {
+		dev_err(ctx->dev, "failed to get dclk source\n");
+		return PTR_ERR(ctx->dclk);
+	}
+
+	ret = vop_clk_enable(ctx);
+	if (ret < 0)
+		return ret;
+
+	/*
+	 * do hclk_reset, reset all vop registers.
+	 */
+	rst = devm_reset_control_get(ctx->dev, "ahb");
+	if (IS_ERR(rst)) {
+		dev_err(ctx->dev, "failed to get ahb reset\n");
+		return PTR_ERR(rst);
+	}
+	reset_control_assert(rst);
+	usleep_range(10, 20);
+	reset_control_deassert(rst);
+
+	memcpy(ctx->regsbak, ctx->regs, ctx->len);
+
+	for (i = 0; i < vop_data->table_size; i++)
+		vop_writel(ctx, init_table[i].offset, init_table[i].value);
+
+	for (i = 0; i < VOP_MAX_WIN_SUPPORT; i++)
+		VOP_WIN_SET(ctx, vop_data->win[i], enable, 0);
+
+	vop_cfg_done(ctx);
+
+	/*
+	 * do dclk_reset, let all win config take affect, and then we can enable
+	 * iommu safe.
+	 */
+	rst = devm_reset_control_get(ctx->dev, "dclk");
+	if (IS_ERR(rst)) {
+		dev_err(ctx->dev, "failed to get dclk reset\n");
+		return PTR_ERR(rst);
+	}
+	reset_control_assert(rst);
+	usleep_range(10, 20);
+	reset_control_deassert(rst);
+
+	ctx->dpms = DRM_MODE_DPMS_ON;
+
+	return 0;
+}
+
+static int vop_bind(struct device *dev, struct device *master, void *data)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct vop_driver_data *vop_data = vop_get_driver_data(dev);
+	struct drm_device *drm_dev = data;
+	struct vop_context *ctx;
+	struct resource *res;
+	int ret;
+
+	if (!vop_data)
+		return -ENODEV;
+
+	ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
+	if (!ctx)
+		return -ENOMEM;
+
+	ctx->dev = dev;
+	ctx->data = vop_data;
+	ctx->drm_dev = drm_dev;
+	dev_set_drvdata(dev, ctx);
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	ctx->len = resource_size(res);
+	ctx->regs = devm_ioremap_resource(dev, res);
+	if (IS_ERR(ctx->regs))
+		return PTR_ERR(ctx->regs);
+
+	ctx->regsbak = devm_kzalloc(dev, ctx->len, GFP_KERNEL);
+	if (!ctx->regsbak)
+		return -ENOMEM;
+
+	ret = rockchip_vop_initial(ctx);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "cannot initial vop dev - err %d\n", ret);
+		return ret;
+	}
+
+	ctx->irq = platform_get_irq(pdev, 0);
+	if (ctx->irq < 0) {
+		dev_err(dev, "cannot find irq for vop\n");
+		return ctx->irq;
+	}
+
+	spin_lock_init(&ctx->reg_lock);
+	spin_lock_init(&ctx->irq_lock);
+
+	init_waitqueue_head(&ctx->wait_vsync_queue);
+	atomic_set(&ctx->wait_vsync_event, 0);
+
+	ret = vop_iommu_init(ctx);
+	if (ret) {
+		DRM_ERROR("Failed to setup iommu, %d\n", ret);
+		return ret;
+	}
+
+	ctx->vsync_wq = create_singlethread_workqueue("vsync");
+	if (!ctx->vsync_wq) {
+		dev_err(dev, "failed to create workqueue\n");
+		return -EINVAL;
+	}
+	INIT_WORK(&ctx->vsync_work, rockchip_vsync_worker);
+
+	mutex_init(&ctx->vsync_mutex);
+	pm_runtime_enable(&pdev->dev);
+
+	ret = devm_request_irq(dev, ctx->irq, rockchip_vop_isr,
+			       IRQF_SHARED, dev_name(dev), ctx);
+	if (ret) {
+		dev_err(dev, "cannot requeset irq%d - err %d\n", ctx->irq, ret);
+		return ret;
+	}
+
+	return vop_create_crtc(ctx);
+}
+
+static void vop_unbind(struct device *dev, struct device *master,
+		       void *data)
+{
+	struct drm_device *drm_dev = data;
+	struct vop_context *ctx = dev_get_drvdata(dev);
+	struct drm_crtc *crtc = &ctx->crtc;
+
+	drm_crtc_cleanup(crtc);
+	pm_runtime_disable(dev);
+	rockchip_drm_remove_crtc(drm_dev, ctx->pipe);
+
+	vop_iommu_fini(ctx);
+}
+
+static const struct component_ops vop_component_ops = {
+	.bind = vop_bind,
+	.unbind = vop_unbind,
+};
+
+static int vop_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct vop_context *ctx;
+
+	if (!dev->of_node) {
+		dev_err(dev, "can't find vop devices\n");
+		return -ENODEV;
+	}
+
+	platform_set_drvdata(pdev, ctx);
+
+	return component_add(dev, &vop_component_ops);
+}
+
+static int vop_remove(struct platform_device *pdev)
+{
+	component_del(&pdev->dev, &vop_component_ops);
+
+	return 0;
+}
+
+struct platform_driver rockchip_vop_platform_driver = {
+	.probe = vop_probe,
+	.remove = vop_remove,
+	.driver = {
+		.name = "rockchip-vop",
+		.owner = THIS_MODULE,
+		.of_match_table = of_match_ptr(vop_driver_dt_match),
+	},
+};
+
+module_platform_driver(rockchip_vop_platform_driver);
+
+MODULE_AUTHOR("Mark Yao <mark.yao@rock-chips.com>");
+MODULE_DESCRIPTION("ROCKCHIP VOP Driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.h b/drivers/gpu/drm/rockchip/rockchip_drm_vop.h
new file mode 100644
index 0000000..2343760
--- /dev/null
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.h
@@ -0,0 +1,187 @@ 
+/*
+ * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
+ * Author:Mark Yao <mark.yao@rock-chips.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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.
+ */
+
+#ifndef _ROCKCHIP_DRM_VOP_H
+#define _ROCKCHIP_DRM_VOP_H
+
+/* register definition */
+#define REG_CFG_DONE			0x0000
+#define VERSION_INFO			0x0004
+#define SYS_CTRL			0x0008
+#define SYS_CTRL1			0x000c
+#define DSP_CTRL0			0x0010
+#define DSP_CTRL1			0x0014
+#define DSP_BG				0x0018
+#define MCU_CTRL			0x001c
+#define INTR_CTRL0			0x0020
+#define INTR_CTRL1			0x0024
+#define WIN0_CTRL0			0x0030
+#define WIN0_CTRL1			0x0034
+#define WIN0_COLOR_KEY			0x0038
+#define WIN0_VIR			0x003c
+#define WIN0_YRGB_MST			0x0040
+#define WIN0_CBR_MST			0x0044
+#define WIN0_ACT_INFO			0x0048
+#define WIN0_DSP_INFO			0x004c
+#define WIN0_DSP_ST			0x0050
+#define WIN0_SCL_FACTOR_YRGB		0x0054
+#define WIN0_SCL_FACTOR_CBR		0x0058
+#define WIN0_SCL_OFFSET			0x005c
+#define WIN0_SRC_ALPHA_CTRL		0x0060
+#define WIN0_DST_ALPHA_CTRL		0x0064
+#define WIN0_FADING_CTRL		0x0068
+/* win1 register */
+#define WIN1_CTRL0			0x0070
+#define WIN1_CTRL1			0x0074
+#define WIN1_COLOR_KEY			0x0078
+#define WIN1_VIR			0x007c
+#define WIN1_YRGB_MST			0x0080
+#define WIN1_CBR_MST			0x0084
+#define WIN1_ACT_INFO			0x0088
+#define WIN1_DSP_INFO			0x008c
+#define WIN1_DSP_ST			0x0090
+#define WIN1_SCL_FACTOR_YRGB		0x0094
+#define WIN1_SCL_FACTOR_CBR		0x0098
+#define WIN1_SCL_OFFSET			0x009c
+#define WIN1_SRC_ALPHA_CTRL		0x00a0
+#define WIN1_DST_ALPHA_CTRL		0x00a4
+#define WIN1_FADING_CTRL		0x00a8
+/* win2 register */
+#define WIN2_CTRL0			0x00b0
+#define WIN2_CTRL1			0x00b4
+#define WIN2_VIR0_1			0x00b8
+#define WIN2_VIR2_3			0x00bc
+#define WIN2_MST0			0x00c0
+#define WIN2_DSP_INFO0			0x00c4
+#define WIN2_DSP_ST0			0x00c8
+#define WIN2_COLOR_KEY			0x00cc
+#define WIN2_MST1			0x00d0
+#define WIN2_DSP_INFO1			0x00d4
+#define WIN2_DSP_ST1			0x00d8
+#define WIN2_SRC_ALPHA_CTRL		0x00dc
+#define WIN2_MST2			0x00e0
+#define WIN2_DSP_INFO2			0x00e4
+#define WIN2_DSP_ST2			0x00e8
+#define WIN2_DST_ALPHA_CTRL		0x00ec
+#define WIN2_MST3			0x00f0
+#define WIN2_DSP_INFO3			0x00f4
+#define WIN2_DSP_ST3			0x00f8
+#define WIN2_FADING_CTRL		0x00fc
+/* win3 register */
+#define WIN3_CTRL0			0x0100
+#define WIN3_CTRL1			0x0104
+#define WIN3_VIR0_1			0x0108
+#define WIN3_VIR2_3			0x010c
+#define WIN3_MST0			0x0110
+#define WIN3_DSP_INFO0			0x0114
+#define WIN3_DSP_ST0			0x0118
+#define WIN3_COLOR_KEY			0x011c
+#define WIN3_MST1			0x0120
+#define WIN3_DSP_INFO1			0x0124
+#define WIN3_DSP_ST1			0x0128
+#define WIN3_SRC_ALPHA_CTRL		0x012c
+#define WIN3_MST2			0x0130
+#define WIN3_DSP_INFO2			0x0134
+#define WIN3_DSP_ST2			0x0138
+#define WIN3_DST_ALPHA_CTRL		0x013c
+#define WIN3_MST3			0x0140
+#define WIN3_DSP_INFO3			0x0144
+#define WIN3_DSP_ST3			0x0148
+#define WIN3_FADING_CTRL		0x014c
+/* hwc register */
+#define HWC_CTRL0			0x0150
+#define HWC_CTRL1			0x0154
+#define HWC_MST				0x0158
+#define HWC_DSP_ST			0x015c
+#define HWC_SRC_ALPHA_CTRL		0x0160
+#define HWC_DST_ALPHA_CTRL		0x0164
+#define HWC_FADING_CTRL			0x0168
+/* post process register */
+#define POST_DSP_HACT_INFO		0x0170
+#define POST_DSP_VACT_INFO		0x0174
+#define POST_SCL_FACTOR_YRGB		0x0178
+#define POST_SCL_CTRL			0x0180
+#define POST_DSP_VACT_INFO_F1		0x0184
+#define DSP_HTOTAL_HS_END		0x0188
+#define DSP_HACT_ST_END			0x018c
+#define DSP_VTOTAL_VS_END		0x0190
+#define DSP_VACT_ST_END			0x0194
+#define DSP_VS_ST_END_F1		0x0198
+#define DSP_VACT_ST_END_F1		0x019c
+/* register definition end */
+
+/* interrupt define */
+#define DSP_HOLD_VALID_INTR		(1 << 0)
+#define FS_INTR				(1 << 1)
+#define LINE_FLAG_INTR			(1 << 2)
+#define BUS_ERROR_INTR			(1 << 3)
+
+#define DSP_HOLD_VALID_INTR_EN(x)	((x) << 4)
+#define FS_INTR_EN(x)			((x) << 5)
+#define LINE_FLAG_INTR_EN(x)		((x) << 6)
+#define BUS_ERROR_INTR_EN(x)		((x) << 7)
+#define DSP_HOLD_VALID_INTR_MASK	(1 << 4)
+#define FS_INTR_EN_MASK			(1 << 5)
+#define LINE_FLAG_INTR_MASK		(1 << 6)
+#define BUS_ERROR_INTR_MASK		(1 << 7)
+
+#define DSP_HOLD_VALID_INTR_CLR		(1 << 8)
+#define FS_INTR_EN_CLR			(1 << 9)
+#define LINE_FLAG_INTR_CLR		(1 << 10)
+#define BUS_ERROR_INTR_CLR		(1 << 11)
+#define DSP_LINE_NUM(x)			(((x) & 0x1fff) << 12)
+#define DSP_LINE_NUM_MASK		(0x1fff << 12)
+
+/* src alpha ctrl define */
+#define SRC_FADING_VALUE(x)		(((x) & 0xff) << 24)
+#define SRC_GLOBAL_ALPHA(x)		(((x) & 0xff) << 16)
+#define SRC_FACTOR_M0(x)		(((x) & 0x7) << 6)
+#define SRC_ALPHA_CAL_M0(x)		(((x) & 0x1) << 5)
+#define SRC_BLEND_M0(x)			(((x) & 0x3) << 3)
+#define SRC_ALPHA_M0(x)			(((x) & 0x1) << 2)
+#define SRC_COLOR_M0(x)			(((x) & 0x1) << 1)
+#define SRC_ALPHA_EN(x)			(((x) & 0x1) << 0)
+/* dst alpha ctrl define */
+#define DST_FACTOR_M0(x)		(((x) & 0x7) << 6)
+
+enum alpha_mode {
+	ALPHA_STRAIGHT,
+	ALPHA_INVERSE,
+};
+
+enum global_blend_mode {
+	ALPHA_GLOBAL,
+	ALPHA_PER_PIX,
+	ALPHA_PER_PIX_GLOBAL,
+};
+
+enum alpha_cal_mode {
+	ALPHA_SATURATION,
+	ALPHA_NO_SATURATION,
+};
+
+enum color_mode {
+	ALPHA_SRC_PRE_MUL,
+	ALPHA_SRC_NO_PRE_MUL,
+};
+
+enum factor_mode {
+	ALPHA_ZERO,
+	ALPHA_ONE,
+	ALPHA_SRC,
+	ALPHA_SRC_INVERSE,
+	ALPHA_SRC_GLOBAL,
+};
+
+#endif /* _ROCKCHIP_DRM_VOP_H */
diff --git a/include/uapi/drm/rockchip_drm.h b/include/uapi/drm/rockchip_drm.h
new file mode 100644
index 0000000..8f8e60e
--- /dev/null
+++ b/include/uapi/drm/rockchip_drm.h
@@ -0,0 +1,97 @@ 
+/*
+ *
+ * Copyright (c) Fuzhou Rockchip Electronics Co.Ltd
+ * Authors:
+ *       Mark Yao <yzq@rock-chips.com>
+ *
+ * base on exynos_drm.h
+ *
+ * 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 _UAPI_ROCKCHIP_DRM_H
+#define _UAPI_ROCKCHIP_DRM_H
+
+#include <drm/drm.h>
+
+/**
+ * User-desired buffer creation information structure.
+ *
+ * @size: user-desired memory allocation size.
+ * @flags: user request for setting memory type or cache attributes.
+ * @handle: returned a handle to created gem object.
+ *     - this handle will be set by gem module of kernel side.
+ */
+struct drm_rockchip_gem_create {
+	uint64_t size;
+	uint32_t flags;
+	uint32_t handle;
+};
+
+/**
+ * A structure for getting buffer offset.
+ *
+ * @handle: a pointer to gem object created.
+ * @pad: just padding to be 64-bit aligned.
+ * @offset: relatived offset value of the memory region allocated.
+ *     - this value should be set by user.
+ */
+struct drm_rockchip_gem_map_off {
+	uint32_t handle;
+	uint32_t pad;
+	uint64_t offset;
+};
+
+/**
+ * A structure for mapping buffer.
+ *
+ * @handle: a handle to gem object created.
+ * @pad: just padding to be 64-bit aligned.
+ * @size: memory size to be mapped.
+ * @mapped: having user virtual address mmaped.
+ *      - this variable would be filled by rockchip gem module
+ *      of kernel side with user virtual address which is allocated
+ *      by do_mmap().
+ */
+struct drm_rockchip_gem_mmap {
+	uint32_t handle;
+	uint32_t pad;
+	uint64_t size;
+	uint64_t mapped;
+};
+
+/**
+ * A structure to gem information.
+ *
+ * @handle: a handle to gem object created.
+ * @flags: flag value including memory type and cache attribute and
+ *      this value would be set by driver.
+ * @size: size to memory region allocated by gem and this size would
+ *      be set by driver.
+ */
+struct drm_rockchip_gem_info {
+	uint32_t handle;
+	uint32_t flags;
+	uint64_t size;
+};
+
+#define DRM_ROCKCHIP_GEM_CREATE		0x00
+#define DRM_ROCKCHIP_GEM_MAP_OFFSET	0x01
+#define DRM_ROCKCHIP_GEM_MMAP		0x02
+#define DRM_ROCKCHIP_GEM_GET		0x04
+
+#define DRM_IOCTL_ROCKCHIP_GEM_CREATE	DRM_IOWR(DRM_COMMAND_BASE + \
+		DRM_ROCKCHIP_GEM_CREATE, struct drm_rockchip_gem_create)
+
+#define DRM_IOCTL_ROCKCHIP_GEM_MAP_OFFSET	DRM_IOWR(DRM_COMMAND_BASE + \
+		DRM_ROCKCHIP_GEM_MAP_OFFSET, struct drm_rockchip_gem_map_off)
+
+#define DRM_IOCTL_ROCKCHIP_GEM_MMAP	DRM_IOWR(DRM_COMMAND_BASE + \
+		DRM_ROCKCHIP_GEM_MMAP, struct drm_rockchip_gem_mmap)
+
+#define DRM_IOCTL_ROCKCHIP_GEM_GET	DRM_IOWR(DRM_COMMAND_BASE + \
+		DRM_ROCKCHIP_GEM_GET, struct drm_rockchip_gem_info)
+#endif /* _UAPI_ROCKCHIP_DRM_H */