[PATCH v1 2/3] media: VPU: support Rockchip VPU

[Jung Zhao]

From: zhaojun <jung.zhao@xxxxxxxxxxxxxx>

The VPU driver for rk3229 & rk3288 platform.
Now only support VP8 decoder.

Signed-off-by: zhaojun <jung.zhao@xxxxxxxxxxxxxx>
---

 drivers/media/platform/rockchip-vpu/Makefile       |   6 +
 drivers/media/platform/rockchip-vpu/rockchip_vpu.c | 799 +++++++++++++++++
 .../platform/rockchip-vpu/rockchip_vpu_common.h    | 439 +++++++++
 .../media/platform/rockchip-vpu/rockchip_vpu_dec.c | 994 +++++++++++++++++++++
 .../media/platform/rockchip-vpu/rockchip_vpu_dec.h |  33 +
 .../media/platform/rockchip-vpu/rockchip_vpu_hw.c  | 278 ++++++
 .../media/platform/rockchip-vpu/rockchip_vpu_hw.h  |  78 ++
 7 files changed, 2627 insertions(+)
 create mode 100644 drivers/media/platform/rockchip-vpu/Makefile
 create mode 100644 drivers/media/platform/rockchip-vpu/rockchip_vpu.c
 create mode 100644 drivers/media/platform/rockchip-vpu/rockchip_vpu_common.h
 create mode 100644 drivers/media/platform/rockchip-vpu/rockchip_vpu_dec.c
 create mode 100644 drivers/media/platform/rockchip-vpu/rockchip_vpu_dec.h
 create mode 100644 drivers/media/platform/rockchip-vpu/rockchip_vpu_hw.c
 create mode 100644 drivers/media/platform/rockchip-vpu/rockchip_vpu_hw.h

diff --git a/drivers/media/platform/rockchip-vpu/Makefile b/drivers/media/platform/rockchip-vpu/Makefile
new file mode 100644
index 0000000..5aab094
--- /dev/null
+++ b/drivers/media/platform/rockchip-vpu/Makefile
@@ -0,0 +1,6 @@
+
+obj-$(CONFIG_VIDEO_ROCKCHIP_VPU) += rockchip-vpu.o
+
+rockchip-vpu-y += rockchip_vpu.o \
+		rockchip_vpu_dec.o \
+		rockchip_vpu_hw.o
diff --git a/drivers/media/platform/rockchip-vpu/rockchip_vpu.c b/drivers/media/platform/rockchip-vpu/rockchip_vpu.c
new file mode 100644
index 0000000..e7e7cb5
--- /dev/null
+++ b/drivers/media/platform/rockchip-vpu/rockchip_vpu.c
@@ -0,0 +1,799 @@
+/*
+ * Rockchip VPU codec driver
+ *
+ * Copyright (C) 2014 Google, Inc.
+ *	Tomasz Figa <tfiga@xxxxxxxxxxxx>
+ *
+ * Based on s5p-mfc driver by Samsung Electronics Co., Ltd.
+ *
+ * Copyright (C) 2011 Samsung Electronics Co., Ltd.
+ *
+ * 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 "rockchip_vpu_common.h"
+
+#include <linux/fs.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-event.h>
+#include <linux/workqueue.h>
+#include <linux/of.h>
+#include <media/videobuf2-core.h>
+#include <media/videobuf2-dma-contig.h>
+
+#include "rockchip_vpu_dec.h"
+#include "rockchip_vpu_hw.h"
+
+int debug;
+module_param(debug, int, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(debug,
+		 "Debug level - higher value produces more verbose messages");
+
+#define DUMP_FILE "/tmp/vpu.out"
+
+int rockchip_vpu_write(const char *file, void *buf, size_t size)
+{
+	const char __user *p = (__force const char __user *)buf;
+	struct file *filp = filp_open(file ? file : DUMP_FILE,
+			O_CREAT | O_RDWR | O_APPEND, 0644);
+	mm_segment_t fs;
+	int ret;
+
+	if (IS_ERR(filp)) {
+		printk(KERN_ERR "open(%s) failed\n", file ? file : DUMP_FILE);
+		return -ENODEV;
+	}
+
+	fs = get_fs();
+	set_fs(KERNEL_DS);
+
+	filp->f_pos = 0;
+	ret = filp->f_op->write(filp, p, size, &filp->f_pos);
+
+	filp_close(filp, NULL);
+	set_fs(fs);
+
+	return ret;
+}
+
+/*
+ * DMA coherent helpers.
+ */
+
+int rockchip_vpu_aux_buf_alloc(struct rockchip_vpu_dev *vpu,
+			       struct rockchip_vpu_aux_buf *buf, size_t size)
+{
+	buf->cpu = dma_alloc_coherent(vpu->dev, size, &buf->dma, GFP_KERNEL);
+	if (!buf->cpu)
+		return -ENOMEM;
+
+	buf->size = size;
+	return 0;
+}
+
+void rockchip_vpu_aux_buf_free(struct rockchip_vpu_dev *vpu,
+			       struct rockchip_vpu_aux_buf *buf)
+{
+	dma_free_coherent(vpu->dev, buf->size, buf->cpu, buf->dma);
+
+	buf->cpu = NULL;
+	buf->dma = 0;
+	buf->size = 0;
+}
+
+/*
+ * Context scheduling.
+ */
+
+static void rockchip_vpu_prepare_run(struct rockchip_vpu_ctx *ctx)
+{
+	if (ctx->run_ops->prepare_run)
+		ctx->run_ops->prepare_run(ctx);
+}
+
+static void __rockchip_vpu_dequeue_run_locked(struct rockchip_vpu_ctx *ctx)
+{
+	struct rockchip_vpu_buf *src, *dst;
+
+	/*
+	 * Since ctx was dequeued from ready_ctxs list, we know that it has
+	 * at least one buffer in each queue.
+	 */
+	src = list_first_entry(&ctx->src_queue, struct rockchip_vpu_buf, list);
+	dst = list_first_entry(&ctx->dst_queue, struct rockchip_vpu_buf, list);
+
+	list_del(&src->list);
+	list_del(&dst->list);
+
+	ctx->run.src = src;
+	ctx->run.dst = dst;
+}
+
+static void rockchip_vpu_try_run(struct rockchip_vpu_dev *dev)
+{
+	struct rockchip_vpu_ctx *ctx = NULL;
+	unsigned long flags;
+
+	vpu_debug_enter();
+
+	spin_lock_irqsave(&dev->irqlock, flags);
+
+	if (list_empty(&dev->ready_ctxs) ||
+	    test_bit(VPU_SUSPENDED, &dev->state))
+		/* Nothing to do. */
+		goto out;
+
+	if (test_and_set_bit(VPU_RUNNING, &dev->state))
+		/*
+		* The hardware is already running. We will pick another
+		* run after we get the notification in rockchip_vpu_run_done().
+		*/
+		goto out;
+
+	ctx = list_entry(dev->ready_ctxs.next, struct rockchip_vpu_ctx, list);
+
+	list_del_init(&ctx->list);
+	__rockchip_vpu_dequeue_run_locked(ctx);
+
+	dev->current_ctx = ctx;
+
+out:
+	spin_unlock_irqrestore(&dev->irqlock, flags);
+
+	if (ctx) {
+		rockchip_vpu_prepare_run(ctx);
+		rockchip_vpu_run(ctx);
+	}
+
+	vpu_debug_leave();
+}
+
+static void __rockchip_vpu_try_context_locked(struct rockchip_vpu_dev *dev,
+					      struct rockchip_vpu_ctx *ctx)
+{
+	if (!list_empty(&ctx->list))
+		/* Context already queued. */
+		return;
+
+	if (!list_empty(&ctx->dst_queue) && !list_empty(&ctx->src_queue))
+		list_add_tail(&ctx->list, &dev->ready_ctxs);
+}
+
+void rockchip_vpu_run_done(struct rockchip_vpu_ctx *ctx,
+			   enum vb2_buffer_state result)
+{
+	struct rockchip_vpu_dev *dev = ctx->dev;
+	unsigned long flags;
+
+	vpu_debug_enter();
+
+	if (ctx->run_ops->run_done)
+		ctx->run_ops->run_done(ctx, result);
+
+	struct vb2_buffer *src = &ctx->run.src->b.vb2_buf;
+	struct vb2_buffer *dst = &ctx->run.dst->b.vb2_buf;
+
+	to_vb2_v4l2_buffer(dst)->timestamp =
+		to_vb2_v4l2_buffer(src)->timestamp;
+	vb2_buffer_done(&ctx->run.src->b.vb2_buf, result);
+	vb2_buffer_done(&ctx->run.dst->b.vb2_buf, result);
+
+	dev->current_ctx = NULL;
+	wake_up_all(&dev->run_wq);
+
+	spin_lock_irqsave(&dev->irqlock, flags);
+
+	__rockchip_vpu_try_context_locked(dev, ctx);
+	clear_bit(VPU_RUNNING, &dev->state);
+
+	spin_unlock_irqrestore(&dev->irqlock, flags);
+
+	/* Try scheduling another run to see if we have anything left to do. */
+	rockchip_vpu_try_run(dev);
+
+	vpu_debug_leave();
+}
+
+void rockchip_vpu_try_context(struct rockchip_vpu_dev *dev,
+			      struct rockchip_vpu_ctx *ctx)
+{
+	unsigned long flags;
+
+	vpu_debug_enter();
+
+	spin_lock_irqsave(&dev->irqlock, flags);
+
+	__rockchip_vpu_try_context_locked(dev, ctx);
+
+	spin_unlock_irqrestore(&dev->irqlock, flags);
+
+	rockchip_vpu_try_run(dev);
+
+	vpu_debug_enter();
+}
+
+/*
+ * Control registration.
+ */
+
+#define IS_VPU_PRIV(x) ((V4L2_CTRL_ID2WHICH(x) == V4L2_CTRL_CLASS_MPEG) && \
+			  V4L2_CTRL_DRIVER_PRIV(x))
+
+int rockchip_vpu_ctrls_setup(struct rockchip_vpu_ctx *ctx,
+			     const struct v4l2_ctrl_ops *ctrl_ops,
+			     struct rockchip_vpu_control *controls,
+			     unsigned num_ctrls,
+			     const char* const* (*get_menu)(u32))
+{
+	struct v4l2_ctrl_config cfg;
+	int i;
+
+	if (num_ctrls > ARRAY_SIZE(ctx->ctrls)) {
+		vpu_err("context control array not large enough\n");
+		return -ENOSPC;
+	}
+
+	v4l2_ctrl_handler_init(&ctx->ctrl_handler, num_ctrls);
+	if (ctx->ctrl_handler.error) {
+		vpu_err("v4l2_ctrl_handler_init failed\n");
+		return ctx->ctrl_handler.error;
+	}
+
+	for (i = 0; i < num_ctrls; i++) {
+		if (IS_VPU_PRIV(controls[i].id)
+		    || controls[i].id >= V4L2_CID_CUSTOM_BASE
+		    || controls[i].type == V4L2_CTRL_TYPE_PRIVATE) {
+			memset(&cfg, 0, sizeof(struct v4l2_ctrl_config));
+
+			cfg.ops = ctrl_ops;
+			cfg.id = controls[i].id;
+			cfg.min = controls[i].minimum;
+			cfg.max = controls[i].maximum;
+			cfg.max_reqs = controls[i].max_reqs;
+			cfg.def = controls[i].default_value;
+			cfg.name = controls[i].name;
+			cfg.type = controls[i].type;
+			cfg.elem_size = controls[i].elem_size;
+			memcpy(cfg.dims, controls[i].dims, sizeof(cfg.dims));
+
+			if (cfg.type == V4L2_CTRL_TYPE_MENU) {
+				cfg.menu_skip_mask = cfg.menu_skip_mask;
+				cfg.qmenu = get_menu(cfg.id);
+			} else {
+				cfg.step = controls[i].step;
+			}
+
+			ctx->ctrls[i] = v4l2_ctrl_new_custom(
+							     &ctx->ctrl_handler,
+							     &cfg, NULL);
+		} else {
+			if (controls[i].type == V4L2_CTRL_TYPE_MENU) {
+				ctx->ctrls[i] =
+					v4l2_ctrl_new_std_menu
+					(&ctx->ctrl_handler,
+					 ctrl_ops,
+					 controls[i].id,
+					 controls[i].maximum,
+					 0,
+					 controls[i].
+					 default_value);
+			} else {
+				ctx->ctrls[i] =
+					v4l2_ctrl_new_std(&ctx->ctrl_handler,
+							  ctrl_ops,
+							  controls[i].id,
+							  controls[i].minimum,
+							  controls[i].maximum,
+							  controls[i].step,
+							  controls[i].
+							  default_value);
+			}
+		}
+
+		if (ctx->ctrl_handler.error) {
+			vpu_err("Adding control (%d) failed\n", i);
+			return ctx->ctrl_handler.error;
+		}
+
+		if (controls[i].is_volatile && ctx->ctrls[i])
+			ctx->ctrls[i]->flags |= V4L2_CTRL_FLAG_VOLATILE;
+		if (controls[i].is_read_only && ctx->ctrls[i])
+			ctx->ctrls[i]->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+		if (controls[i].can_store && ctx->ctrls[i])
+			ctx->ctrls[i]->flags |= V4L2_CTRL_FLAG_REQ_KEEP;
+	}
+
+	v4l2_ctrl_handler_setup(&ctx->ctrl_handler);
+	ctx->num_ctrls = num_ctrls;
+	return 0;
+}
+
+void rockchip_vpu_ctrls_delete(struct rockchip_vpu_ctx *ctx)
+{
+	int i;
+
+	v4l2_ctrl_handler_free(&ctx->ctrl_handler);
+	for (i = 0; i < ctx->num_ctrls; i++)
+		ctx->ctrls[i] = NULL;
+}
+
+/*
+ * V4L2 file operations.
+ */
+
+static int rockchip_vpu_open(struct file *filp)
+{
+	struct video_device *vdev = video_devdata(filp);
+	struct rockchip_vpu_dev *dev = video_drvdata(filp);
+	struct rockchip_vpu_ctx *ctx = NULL;
+	struct vb2_queue *q;
+	int ret = 0;
+
+	/*
+	 * We do not need any extra locking here, because we operate only
+	 * on local data here, except reading few fields from dev, which
+	 * do not change through device's lifetime (which is guaranteed by
+	 * reference on module from open()) and V4L2 internal objects (such
+	 * as vdev and ctx->fh), which have proper locking done in respective
+	 * helper functions used here.
+	 */
+
+	vpu_debug_enter();
+
+	/* Allocate memory for context */
+	ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
+	if (!ctx) {
+		ret = -ENOMEM;
+		goto err_leave;
+	}
+
+	v4l2_fh_init(&ctx->fh, video_devdata(filp));
+	filp->private_data = &ctx->fh;
+	v4l2_fh_add(&ctx->fh);
+	ctx->dev = dev;
+	INIT_LIST_HEAD(&ctx->src_queue);
+	INIT_LIST_HEAD(&ctx->dst_queue);
+	INIT_LIST_HEAD(&ctx->list);
+
+	if (vdev == dev->vfd_dec) {
+		/* only for decoder */
+		ret = rockchip_vpu_dec_init(ctx);
+		if (ret) {
+			vpu_err("Failed to initialize decoder context\n");
+			goto err_fh_free;
+		}
+	} else {
+		ret = -ENOENT;
+		goto err_fh_free;
+	}
+	ctx->fh.ctrl_handler = &ctx->ctrl_handler;
+
+	/* Init videobuf2 queue for CAPTURE */
+	q = &ctx->vq_dst;
+	q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
+	q->drv_priv = &ctx->fh;
+	q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
+	q->lock = &dev->vpu_mutex;
+	q->buf_struct_size = sizeof(struct rockchip_vpu_buf);
+
+	if (vdev == dev->vfd_dec)
+		q->ops = get_dec_queue_ops();
+
+	q->mem_ops = &vb2_dma_contig_memops;
+	q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
+	q->v4l2_allow_requests = true;
+	ret = vb2_queue_init(q);
+	if (ret) {
+		vpu_err("Failed to initialize videobuf2 queue(capture)\n");
+		goto err_dec_exit;
+	}
+
+	/* Init videobuf2 queue for OUTPUT */
+	q = &ctx->vq_src;
+	q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
+	q->drv_priv = &ctx->fh;
+	q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
+	q->lock = &dev->vpu_mutex;
+	q->buf_struct_size = sizeof(struct rockchip_vpu_buf);
+
+	if (vdev == dev->vfd_dec)
+		q->ops = get_dec_queue_ops();
+
+	q->mem_ops = &vb2_dma_contig_memops;
+	q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
+	q->v4l2_allow_requests = true;
+	ret = vb2_queue_init(q);
+	if (ret) {
+		vpu_err("Failed to initialize videobuf2 queue(output)\n");
+		goto err_vq_dst_release;
+	}
+
+	vpu_debug_leave();
+
+	return 0;
+
+err_vq_dst_release:
+	vb2_queue_release(&ctx->vq_dst);
+err_dec_exit:
+	if (vdev == dev->vfd_dec)
+		rockchip_vpu_dec_exit(ctx);
+err_fh_free:
+	v4l2_fh_del(&ctx->fh);
+	v4l2_fh_exit(&ctx->fh);
+	kfree(ctx);
+err_leave:
+	vpu_debug_leave();
+
+	return ret;
+}
+
+static int rockchip_vpu_release(struct file *filp)
+{
+	struct rockchip_vpu_ctx *ctx = fh_to_ctx(filp->private_data);
+	struct video_device *vdev = video_devdata(filp);
+	struct rockchip_vpu_dev *dev = ctx->dev;
+
+	/*
+	 * No need for extra locking because this was the last reference
+	 * to this file.
+	 */
+
+	vpu_debug_enter();
+
+	/*
+	 * vb2_queue_release() ensures that streaming is stopped, which
+	 * in turn means that there are no frames still being processed
+	 * by hardware.
+	 */
+	vb2_queue_release(&ctx->vq_src);
+	vb2_queue_release(&ctx->vq_dst);
+
+	v4l2_fh_del(&ctx->fh);
+	v4l2_fh_exit(&ctx->fh);
+
+	if (vdev == dev->vfd_dec)
+		rockchip_vpu_dec_exit(ctx);
+
+	kfree(ctx);
+
+	vpu_debug_leave();
+
+	return 0;
+}
+
+static unsigned int rockchip_vpu_poll(struct file *filp,
+				      struct poll_table_struct *wait)
+{
+	struct rockchip_vpu_ctx *ctx = fh_to_ctx(filp->private_data);
+	struct vb2_queue *src_q, *dst_q;
+	struct vb2_buffer *src_vb = NULL, *dst_vb = NULL;
+	unsigned int rc = 0;
+	unsigned long flags;
+
+	vpu_debug_enter();
+
+	src_q = &ctx->vq_src;
+	dst_q = &ctx->vq_dst;
+
+	/*
+	 * There has to be at least one buffer queued on each queued_list, which
+	 * means either in driver already or waiting for driver to claim it
+	 * and start processing.
+	 */
+	if ((!vb2_is_streaming(src_q) || list_empty(&src_q->queued_list)) &&
+	    (!vb2_is_streaming(dst_q) || list_empty(&dst_q->queued_list))) {
+		vpu_debug(0, "src q streaming %d, dst q streaming %d, src list empty(%d), dst list empty(%d)\n",
+			  src_q->streaming, dst_q->streaming,
+			  list_empty(&src_q->queued_list),
+			  list_empty(&dst_q->queued_list));
+		return POLLERR;
+	}
+
+	poll_wait(filp, &ctx->fh.wait, wait);
+	poll_wait(filp, &src_q->done_wq, wait);
+	poll_wait(filp, &dst_q->done_wq, wait);
+
+	if (v4l2_event_pending(&ctx->fh))
+		rc |= POLLPRI;
+
+	spin_lock_irqsave(&src_q->done_lock, flags);
+
+	if (!list_empty(&src_q->done_list))
+		src_vb = list_first_entry(&src_q->done_list, struct vb2_buffer,
+					  done_entry);
+
+	if (src_vb && (src_vb->state == VB2_BUF_STATE_DONE ||
+		       src_vb->state == VB2_BUF_STATE_ERROR))
+		rc |= POLLOUT | POLLWRNORM;
+
+	spin_unlock_irqrestore(&src_q->done_lock, flags);
+
+	spin_lock_irqsave(&dst_q->done_lock, flags);
+
+	if (!list_empty(&dst_q->done_list))
+		dst_vb = list_first_entry(&dst_q->done_list, struct vb2_buffer,
+					  done_entry);
+
+	if (dst_vb && (dst_vb->state == VB2_BUF_STATE_DONE ||
+		       dst_vb->state == VB2_BUF_STATE_ERROR))
+		rc |= POLLIN | POLLRDNORM;
+
+	spin_unlock_irqrestore(&dst_q->done_lock, flags);
+
+	return rc;
+}
+
+static int rockchip_vpu_mmap(struct file *filp, struct vm_area_struct *vma)
+{
+	struct rockchip_vpu_ctx *ctx = fh_to_ctx(filp->private_data);
+	unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
+	int ret;
+
+	vpu_debug_enter();
+
+	if (offset < DST_QUEUE_OFF_BASE) {
+		vpu_debug(4, "mmaping source\n");
+
+		ret = vb2_mmap(&ctx->vq_src, vma);
+	} else {        /* capture */
+		vpu_debug(4, "mmaping destination\n");
+
+		vma->vm_pgoff -= (DST_QUEUE_OFF_BASE >> PAGE_SHIFT);
+		ret = vb2_mmap(&ctx->vq_dst, vma);
+	}
+
+	vpu_debug_leave();
+
+	return ret;
+}
+
+static const struct v4l2_file_operations rockchip_vpu_fops = {
+	.owner = THIS_MODULE,
+	.open = rockchip_vpu_open,
+	.release = rockchip_vpu_release,
+	.poll = rockchip_vpu_poll,
+	.unlocked_ioctl = video_ioctl2,
+	.mmap = rockchip_vpu_mmap,
+};
+
+/*
+ * Platform driver.
+ */
+
+static void *rockchip_get_drv_data(struct platform_device *pdev);
+
+static int rockchip_vpu_probe(struct platform_device *pdev)
+{
+	struct rockchip_vpu_dev *vpu = NULL;
+	DEFINE_DMA_ATTRS(attrs_novm);
+	struct video_device *vfd;
+	int ret = 0;
+
+	vpu_debug_enter();
+
+	vpu = devm_kzalloc(&pdev->dev, sizeof(*vpu), GFP_KERNEL);
+	if (!vpu)
+		return -ENOMEM;
+
+	vpu->dev = &pdev->dev;
+	vpu->pdev = pdev;
+	mutex_init(&vpu->vpu_mutex);
+	spin_lock_init(&vpu->irqlock);
+	INIT_LIST_HEAD(&vpu->ready_ctxs);
+	init_waitqueue_head(&vpu->run_wq);
+
+	vpu->variant = rockchip_get_drv_data(pdev);
+
+	ret = rockchip_vpu_hw_probe(vpu);
+	if (ret) {
+		dev_err(&pdev->dev, "rockchip_vpu_hw_probe failed\n");
+		goto err_hw_probe;
+	}
+
+	dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING, &attrs_novm);
+	vpu->alloc_ctx = vb2_dma_contig_init_ctx_attrs(&pdev->dev,
+						       &attrs_novm);
+	if (IS_ERR(vpu->alloc_ctx)) {
+		ret = PTR_ERR(vpu->alloc_ctx);
+		goto err_dma_contig;
+	}
+
+	vpu->alloc_ctx_vm = vb2_dma_contig_init_ctx(&pdev->dev);
+	if (IS_ERR(vpu->alloc_ctx_vm)) {
+		ret = PTR_ERR(vpu->alloc_ctx_vm);
+		goto err_dma_contig_vm;
+	}
+
+	ret = v4l2_device_register(&pdev->dev, &vpu->v4l2_dev);
+	if (ret) {
+		dev_err(&pdev->dev, "Failed to register v4l2 device\n");
+		goto err_v4l2_dev_reg;
+	}
+
+	platform_set_drvdata(pdev, vpu);
+
+	/* decoder */
+	vfd = video_device_alloc();
+	if (!vfd) {
+		v4l2_err(&vpu->v4l2_dev, "Failed to allocate video device\n");
+		ret = -ENOMEM;
+		goto err_v4l2_dev_reg;
+	}
+
+	vfd->fops = &rockchip_vpu_fops;
+	vfd->ioctl_ops = get_dec_v4l2_ioctl_ops();
+	vfd->release = video_device_release;
+	vfd->lock = &vpu->vpu_mutex;
+	vfd->v4l2_dev = &vpu->v4l2_dev;
+	vfd->vfl_dir = VFL_DIR_M2M;
+	snprintf(vfd->name, sizeof(vfd->name), "%s", ROCKCHIP_VPU_DEC_NAME);
+	vpu->vfd_dec = vfd;
+
+	video_set_drvdata(vfd, vpu);
+
+	ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0);
+	if (ret) {
+		v4l2_err(&vpu->v4l2_dev, "Failed to register video device\n");
+		video_device_release(vfd);
+		goto err_dec_reg;
+	}
+
+	v4l2_info(&vpu->v4l2_dev,
+		  "Rockchip VPU decoder registered as /vpu/video%d\n",
+		  vfd->num);
+
+	vpu_debug_leave();
+
+	return 0;
+
+err_dec_reg:
+	video_device_release(vpu->vfd_dec);
+err_v4l2_dev_reg:
+	vb2_dma_contig_cleanup_ctx(vpu->alloc_ctx_vm);
+err_dma_contig_vm:
+	vb2_dma_contig_cleanup_ctx(vpu->alloc_ctx);
+err_dma_contig:
+	rockchip_vpu_hw_remove(vpu);
+err_hw_probe:
+	pr_debug("%s-- with error\n", __func__);
+	vpu_debug_leave();
+
+	return ret;
+}
+
+static int rockchip_vpu_remove(struct platform_device *pdev)
+{
+	struct rockchip_vpu_dev *vpu = platform_get_drvdata(pdev);
+
+	vpu_debug_enter();
+
+	v4l2_info(&vpu->v4l2_dev, "Removing %s\n", pdev->name);
+
+	/*
+	 * We are safe here assuming that .remove() got called as
+	 * a result of module removal, which guarantees that all
+	 * contexts have been released.
+	 */
+
+	video_unregister_device(vpu->vfd_dec);
+	v4l2_device_unregister(&vpu->v4l2_dev);
+	vb2_dma_contig_cleanup_ctx(vpu->alloc_ctx_vm);
+	vb2_dma_contig_cleanup_ctx(vpu->alloc_ctx);
+	rockchip_vpu_hw_remove(vpu);
+
+	vpu_debug_leave();
+
+	return 0;
+}
+
+/* Supported VPU variants. */
+static const struct rockchip_vpu_variant rk3288_vpu_variant = {
+	.vpu_type = RK3288_VPU,
+	.name = "Rk3288 vpu",
+	.dec_offset = 0x400,
+	.dec_reg_num = 60 + 41,
+};
+
+static const struct rockchip_vpu_variant rk3229_vpu_variant = {
+	.vpu_type = RK3229_VPU,
+	.name = "Rk3229 vpu",
+	.dec_offset = 0x400,
+	.dec_reg_num = 159,
+};
+
+static struct platform_device_id vpu_driver_ids[] = {
+	{
+		.name = "rk3288-vpu",
+		.driver_data = (unsigned long)&rk3288_vpu_variant,
+	}, {
+		.name = "rk3229-vpu",
+		.driver_data = (unsigned long)&rk3229_vpu_variant,
+	},
+	{ /* sentinel */ }
+};
+
+MODULE_DEVICE_TABLE(platform, vpu_driver_ids);
+
+#ifdef CONFIG_OF
+static const struct of_device_id of_rockchip_vpu_match[] = {
+	{ .compatible = "rockchip,rk3288-vpu", .data = &rk3288_vpu_variant, },
+	{ .compatible = "rockchip,rk3229-vpu", .data = &rk3229_vpu_variant, },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, of_rockchip_vpu_match);
+#endif
+
+static void *rockchip_get_drv_data(struct platform_device *pdev)
+{
+	void *driver_data = NULL;
+
+	if (pdev->dev.of_node) {
+		const struct of_device_id *match;
+
+		match = of_match_node(of_rockchip_vpu_match,
+				      pdev->dev.of_node);
+		if (match)
+			driver_data = (void *)match->data;
+	} else {
+		driver_data = (void *)platform_get_device_id(pdev)->driver_data;
+	}
+	return driver_data;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int rockchip_vpu_suspend(struct device *dev)
+{
+	struct rockchip_vpu_dev *vpu = dev_get_drvdata(dev);
+
+	set_bit(VPU_SUSPENDED, &vpu->state);
+	wait_event(vpu->run_wq, vpu->current_ctx == NULL);
+
+	return 0;
+}
+
+static int rockchip_vpu_resume(struct device *dev)
+{
+	struct rockchip_vpu_dev *vpu = dev_get_drvdata(dev);
+
+	clear_bit(VPU_SUSPENDED, &vpu->state);
+	rockchip_vpu_try_run(vpu);
+
+	return 0;
+}
+#endif
+
+static const struct dev_pm_ops rockchip_vpu_pm_ops = {
+	SET_SYSTEM_SLEEP_PM_OPS(rockchip_vpu_suspend, rockchip_vpu_resume)
+};
+
+static struct platform_driver rockchip_vpu_driver = {
+	.probe = rockchip_vpu_probe,
+	.remove = rockchip_vpu_remove,
+	.id_table = vpu_driver_ids,
+	.driver = {
+		.name = ROCKCHIP_VPU_NAME,
+		.owner = THIS_MODULE,
+#ifdef CONFIG_OF
+		.of_match_table = of_match_ptr(of_rockchip_vpu_match),
+#endif
+		.pm = &rockchip_vpu_pm_ops,
+	},
+};
+module_platform_driver(rockchip_vpu_driver);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Jung Zhao <jung.zhao@xxxxxxxxxxxxxx>");
+MODULE_AUTHOR("Alpha Lin <Alpha.Lin@xxxxxxxxxxxxxx>");
+MODULE_AUTHOR("Tomasz Figa <tfiga@xxxxxxxxxxxx>");
+MODULE_DESCRIPTION("Rockchip VPU codec driver");
diff --git a/drivers/media/platform/rockchip-vpu/rockchip_vpu_common.h b/drivers/media/platform/rockchip-vpu/rockchip_vpu_common.h
new file mode 100644
index 0000000..0d77304
--- /dev/null
+++ b/drivers/media/platform/rockchip-vpu/rockchip_vpu_common.h
@@ -0,0 +1,439 @@
+/*
+ * Rockchip VPU codec driver
+ *
+ * Copyright (C) 2014 Google, Inc.
+ *	Tomasz Figa <tfiga@xxxxxxxxxxxx>
+ *
+ * Based on s5p-mfc driver by Samsung Electronics Co., Ltd.
+ *
+ * Copyright (C) 2011 Samsung Electronics Co., Ltd.
+ *
+ * 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_VPU_COMMON_H_
+#define ROCKCHIP_VPU_COMMON_H_
+
+/* Enable debugging by default for now. */
+#define DEBUG
+
+#include <linux/platform_device.h>
+#include <linux/videodev2.h>
+#include <linux/wait.h>
+
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
+#include <media/videobuf2-core.h>
+#include <media/videobuf2-dma-contig.h>
+
+#include "rockchip_vpu_hw.h"
+
+#define ROCKCHIP_VPU_NAME		"rockchip-vpu"
+#define ROCKCHIP_VPU_DEC_NAME		"rockchip-vpu-dec"
+
+#define V4L2_CID_CUSTOM_BASE		(V4L2_CID_USER_BASE | 0x1000)
+
+#define DST_QUEUE_OFF_BASE		(TASK_SIZE / 2)
+
+#define ROCKCHIP_VPU_MAX_CTRLS		32
+
+#define MB_DIM				16
+#define MB_WIDTH(x_size)		DIV_ROUND_UP(x_size, MB_DIM)
+#define MB_HEIGHT(y_size)		DIV_ROUND_UP(y_size, MB_DIM)
+
+struct rockchip_vpu_ctx;
+struct rockchip_vpu_codec_ops;
+
+/**
+ * struct rockchip_vpu_variant - information about VPU hardware variant
+ *
+ * @hw_id:		Top 16 bits (product ID) of hardware ID register.
+ * @vpu_type:		Vpu type.
+ * @name:		Vpu name.
+ * @dec_offset:		Offset from VPU base to decoder registers.
+ * @dec_reg_num:	Number of registers of decoder block.
+ */
+struct rockchip_vpu_variant {
+	enum rockchip_vpu_type vpu_type;
+	char *name;
+	unsigned dec_offset;
+	unsigned dec_reg_num;
+};
+
+/**
+ * enum rockchip_vpu_codec_mode - codec operating mode.
+ * @RK_VPU_CODEC_NONE:	No operating mode. Used for RAW video formats.
+ * @RK3288_VPU_CODEC_VP8D:	Rk3288 VP8 decoder.
+ * @RK3229_VPU_CODEC_VP8D:	Rk3229 VP8 decoder.
+ */
+enum rockchip_vpu_codec_mode {
+	RK_VPU_CODEC_NONE = -1,
+	RK3288_VPU_CODEC_VP8D,
+	RK3229_VPU_CODEC_VP8D,
+};
+
+/**
+ * enum rockchip_vpu_plane - indices of planes inside a VB2 buffer.
+ * @PLANE_Y:		Plane containing luminance data (also denoted as Y).
+ * @PLANE_CB_CR:	Plane containing interleaved chrominance data (also
+ *			denoted as CbCr).
+ * @PLANE_CB:		Plane containing CB part of chrominance data.
+ * @PLANE_CR:		Plane containing CR part of chrominance data.
+ */
+enum rockchip_vpu_plane {
+	PLANE_Y		= 0,
+	PLANE_CB_CR	= 1,
+	PLANE_CB	= 1,
+	PLANE_CR	= 2,
+};
+
+/**
+ * struct rockchip_vpu_buf - Private data related to each VB2 buffer.
+ * @vb:			Pointer to related VB2 buffer.
+ * @list:		List head for queuing in buffer queue.
+ * @flags:		Buffer state. See enum rockchip_vpu_buf_flags.
+ */
+struct rockchip_vpu_buf {
+	struct vb2_v4l2_buffer b;
+	struct list_head list;
+	/* Mode-specific data. */
+};
+
+/**
+ * enum rockchip_vpu_state - bitwise flags indicating hardware state.
+ * @VPU_RUNNING:	The hardware has been programmed for operation
+ *			and is running at the moment.
+ * @VPU_SUSPENDED:	System is entering sleep state and no more runs
+ *			should be executed on hardware.
+ */
+enum rockchip_vpu_state {
+	VPU_RUNNING	= BIT(0),
+	VPU_SUSPENDED	= BIT(1),
+};
+
+/**
+ * struct rockchip_vpu_dev - driver data
+ * @v4l2_dev:		V4L2 device to register video devices for.
+ * @vfd_dec:		Video device for decoder.
+ * @pdev:		Pointer to VPU platform device.
+ * @dev:		Pointer to device for convenient logging using
+ *			dev_ macros.
+ * @alloc_ctx:		VB2 allocator context
+ *			(for allocations without kernel mapping).
+ * @alloc_ctx_vm:	VB2 allocator context
+ *			(for allocations with kernel mapping).
+ * @aclk:		Handle of ACLK clock.
+ * @hclk:		Handle of HCLK clock.
+ * @base:		Mapped address of VPU registers.
+ * @dec_base:		Mapped address of VPU decoder register for convenience.
+ * @mapping:		DMA IOMMU mapping.
+ * @vpu_mutex:		Mutex to synchronize V4L2 calls.
+ * @irqlock:		Spinlock to synchronize access to data structures
+ *			shared with interrupt handlers.
+ * @state:		Device state.
+ * @ready_ctxs:		List of contexts ready to run.
+ * @variant:		Hardware variant-specific parameters.
+ * @current_ctx:	Context being currently processed by hardware.
+ * @run_wq:		Wait queue to wait for run completion.
+ * @watchdog_work:	Delayed work for hardware timeout handling.
+ */
+struct rockchip_vpu_dev {
+	struct v4l2_device v4l2_dev;
+	struct video_device *vfd_dec;
+	struct platform_device *pdev;
+	struct device *dev;
+	void *alloc_ctx;
+	void *alloc_ctx_vm;
+	struct clk *aclk;
+	struct clk *hclk;
+	void __iomem *base;
+	void __iomem *dec_base;
+	struct dma_iommu_mapping *mapping;
+
+	struct mutex vpu_mutex; /* video_device lock */
+	spinlock_t irqlock;
+	unsigned long state;
+	struct list_head ready_ctxs;
+	const struct rockchip_vpu_variant *variant;
+	struct rockchip_vpu_ctx *current_ctx;
+	wait_queue_head_t run_wq;
+	struct delayed_work watchdog_work;
+};
+
+/**
+ * struct rockchip_vpu_run_ops - per context operations on run data.
+ * @prepare_run:	Called when the context was selected for running
+ *			to prepare operating mode specific data.
+ * @run_done:		Called when hardware completed the run to collect
+ *			operating mode specific data from hardware and
+ *			finalize the processing.
+ */
+struct rockchip_vpu_run_ops {
+	void (*prepare_run)(struct rockchip_vpu_ctx *);
+	void (*run_done)(struct rockchip_vpu_ctx *, enum vb2_buffer_state);
+};
+
+/**
+ * struct rockchip_vpu_vp8d_run - per-run data specific to VP8
+ * decoding.
+ * @frame_hdr: Pointer to a buffer containing per-run frame data which
+ *			is needed by setting vpu register.
+ */
+struct rockchip_vpu_vp8d_run {
+	const struct v4l2_ctrl_vp8_frame_hdr *frame_hdr;
+};
+
+/**
+ * struct rockchip_vpu_run - per-run data for hardware code.
+ * @src:		Source buffer to be processed.
+ * @dst:		Destination buffer to be processed.
+ * @priv_src:		Hardware private source buffer.
+ * @priv_dst:		Hardware private destination buffer.
+ */
+struct rockchip_vpu_run {
+	/* Generic for more than one operating mode. */
+	struct rockchip_vpu_buf *src;
+	struct rockchip_vpu_buf *dst;
+
+	struct rockchip_vpu_aux_buf priv_src;
+	struct rockchip_vpu_aux_buf priv_dst;
+
+	/* Specific for particular operating modes. */
+	union {
+		struct rockchip_vpu_vp8d_run vp8d;
+		/* Other modes will need different data. */
+	};
+};
+
+/**
+ * struct rockchip_vpu_ctx - Context (instance) private data.
+ *
+ * @dev:		VPU driver data to which the context belongs.
+ * @fh:			V4L2 file handler.
+ *
+ * @vpu_src_fmt:	Descriptor of active source format.
+ * @src_fmt:		V4L2 pixel format of active source format.
+ * @vpu_dst_fmt:	Descriptor of active destination format.
+ * @dst_fmt:		V4L2 pixel format of active destination format.
+ *
+ * @vq_src:		Videobuf2 source queue.
+ * @src_queue:		Internal source buffer queue.
+ * @src_crop:		Configured source crop rectangle (encoder-only).
+ * @vq_dst:		Videobuf2 destination queue
+ * @dst_queue:		Internal destination buffer queue.
+ * @dst_bufs:		Private buffers wrapping VB2 buffers (destination).
+ *
+ * @ctrls:		Array containing pointer to registered controls.
+ * @ctrl_handler:	Control handler used to register controls.
+ * @num_ctrls:		Number of registered controls.
+ *
+ * @list:		List head for queue of ready contexts.
+ *
+ * @run:		Structure containing data about currently scheduled
+ *			processing run.
+ * @run_ops:		Set of operations related to currently scheduled run.
+ * @hw:			Structure containing hardware-related context.
+ */
+struct rockchip_vpu_ctx {
+	struct rockchip_vpu_dev *dev;
+	struct v4l2_fh fh;
+
+	/* Format info */
+	struct rockchip_vpu_fmt *vpu_src_fmt;
+	struct v4l2_pix_format_mplane src_fmt;
+	struct rockchip_vpu_fmt *vpu_dst_fmt;
+	struct v4l2_pix_format_mplane dst_fmt;
+
+	/* VB2 queue data */
+	struct vb2_queue vq_src;
+	struct list_head src_queue;
+	struct v4l2_rect src_crop;
+	struct vb2_queue vq_dst;
+	struct list_head dst_queue;
+	struct vb2_buffer *dst_bufs[VIDEO_MAX_FRAME];
+
+	/* Controls */
+	struct v4l2_ctrl *ctrls[ROCKCHIP_VPU_MAX_CTRLS];
+	struct v4l2_ctrl_handler ctrl_handler;
+	unsigned num_ctrls;
+
+	/* Various runtime data */
+	struct list_head list;
+
+	struct rockchip_vpu_run run;
+	const struct rockchip_vpu_run_ops *run_ops;
+	struct rockchip_vpu_hw_ctx hw;
+};
+
+/**
+ * struct rockchip_vpu_fmt - information about supported video formats.
+ * @name:	Human readable name of the format.
+ * @fourcc:	FourCC code of the format. See V4L2_PIX_FMT_*.
+ * @vpu_type:	Vpu_type;
+ * @codec_mode:	Codec mode related to this format. See
+ *		enum rockchip_vpu_codec_mode.
+ * @num_planes:	Number of planes used by this format.
+ * @depth:	Depth of each plane in bits per pixel.
+ */
+struct rockchip_vpu_fmt {
+	char *name;
+	u32 fourcc;
+	enum rockchip_vpu_type vpu_type;
+	enum rockchip_vpu_codec_mode codec_mode;
+	int num_planes;
+	u8 depth[VIDEO_MAX_PLANES];
+};
+
+/**
+ * struct rockchip_vpu_control - information about controls to be registered.
+ * @id:			Control ID.
+ * @type:		Type of the control.
+ * @name:		Human readable name of the control.
+ * @minimum:		Minimum value of the control.
+ * @maximum:		Maximum value of the control.
+ * @step:		Control value increase step.
+ * @menu_skip_mask:	Mask of invalid menu positions.
+ * @default_value:	Initial value of the control.
+ * @max_reqs:		Maximum number of configration request.
+ * @dims:		Size of each dimension of compound control.
+ * @elem_size:		Size of individual element of compound control.
+ * @is_volatile:	Control is volatile.
+ * @is_read_only:	Control is read-only.
+ * @can_store:		Control uses configuration stores.
+ *
+ * See also struct v4l2_ctrl_config.
+ */
+struct rockchip_vpu_control {
+	u32 id;
+
+	enum v4l2_ctrl_type type;
+	const char *name;
+	s32 minimum;
+	s32 maximum;
+	s32 step;
+	u32 menu_skip_mask;
+	s32 default_value;
+	s32 max_reqs;
+	u32 dims[V4L2_CTRL_MAX_DIMS];
+	u32 elem_size;
+
+	bool is_volatile:1;
+	bool is_read_only:1;
+	bool can_store:1;
+};
+
+/* Logging helpers */
+
+/**
+ * debug - Module parameter to control level of debugging messages.
+ *
+ * Level of debugging messages can be controlled by bits of module parameter
+ * called "debug". Meaning of particular bits is as follows:
+ *
+ * bit 0 - global information: mode, size, init, release
+ * bit 1 - each run start/result information
+ * bit 2 - contents of small controls from userspace
+ * bit 3 - contents of big controls from userspace
+ * bit 4 - detail fmt, ctrl, buffer q/dq information
+ * bit 5 - detail function enter/leave trace information
+ * bit 6 - register write/read information
+ */
+extern int debug;
+
+#define vpu_debug(level, fmt, args...)				\
+	do {							\
+		if (debug & BIT(level))				\
+			pr_err("%s:%d: " fmt,	                \
+			       __func__, __LINE__, ##args);	\
+	} while (0)
+
+#define vpu_debug_enter()	vpu_debug(5, "enter\n")
+#define vpu_debug_leave()	vpu_debug(5, "leave\n")
+
+#define vpu_err(fmt, args...)					\
+	pr_err("%s:%d: " fmt, __func__, __LINE__, ##args)
+
+static inline char *fmt2str(u32 fmt, char *str)
+{
+	char a = fmt & 0xFF;
+	char b = (fmt >> 8) & 0xFF;
+	char c = (fmt >> 16) & 0xFF;
+	char d = (fmt >> 24) & 0xFF;
+
+	sprintf(str, "%c%c%c%c", a, b, c, d);
+
+	return str;
+}
+
+/* Structure access helpers. */
+static inline struct rockchip_vpu_ctx *fh_to_ctx(struct v4l2_fh *fh)
+{
+	return container_of(fh, struct rockchip_vpu_ctx, fh);
+}
+
+static inline struct rockchip_vpu_ctx *ctrl_to_ctx(struct v4l2_ctrl *ctrl)
+{
+	return container_of(ctrl->handler,
+			    struct rockchip_vpu_ctx, ctrl_handler);
+}
+
+static inline struct rockchip_vpu_buf *vb_to_buf(struct vb2_buffer *vb)
+{
+	return container_of(to_vb2_v4l2_buffer(vb), struct rockchip_vpu_buf, b);
+}
+
+static inline bool rockchip_vpu_ctx_is_encoder(struct rockchip_vpu_ctx *ctx)
+{
+	return ctx->vpu_dst_fmt->codec_mode != RK_VPU_CODEC_NONE;
+}
+
+int rockchip_vpu_ctrls_setup(struct rockchip_vpu_ctx *ctx,
+			     const struct v4l2_ctrl_ops *ctrl_ops,
+			     struct rockchip_vpu_control *controls,
+			     unsigned num_ctrls,
+			     const char* const* (*get_menu)(u32));
+void rockchip_vpu_ctrls_delete(struct rockchip_vpu_ctx *ctx);
+
+void rockchip_vpu_try_context(struct rockchip_vpu_dev *dev,
+			      struct rockchip_vpu_ctx *ctx);
+
+void rockchip_vpu_run_done(struct rockchip_vpu_ctx *ctx,
+			   enum vb2_buffer_state result);
+
+int rockchip_vpu_aux_buf_alloc(struct rockchip_vpu_dev *vpu,
+			       struct rockchip_vpu_aux_buf *buf, size_t size);
+void rockchip_vpu_aux_buf_free(struct rockchip_vpu_dev *vpu,
+			       struct rockchip_vpu_aux_buf *buf);
+
+static inline void vdpu_write_relaxed(struct rockchip_vpu_dev *vpu,
+				      u32 val, u32 reg)
+{
+	vpu_debug(6, "MARK: set reg[%03d]: %08x\n", reg / 4, val);
+	writel_relaxed(val, vpu->dec_base + reg);
+}
+
+static inline void vdpu_write(struct rockchip_vpu_dev *vpu, u32 val, u32 reg)
+{
+	vpu_debug(6, "MARK: set reg[%03d]: %08x\n", reg / 4, val);
+	writel(val, vpu->dec_base + reg);
+}
+
+static inline u32 vdpu_read(struct rockchip_vpu_dev *vpu, u32 reg)
+{
+	u32 val = readl(vpu->dec_base + reg);
+
+	vpu_debug(6, "MARK: get reg[%03d]: %08x\n", reg / 4, val);
+	return val;
+}
+
+int rockchip_vpu_write(const char *file, void *buf, size_t size);
+
+#endif /* ROCKCHIP_VPU_COMMON_H_ */
diff --git a/drivers/media/platform/rockchip-vpu/rockchip_vpu_dec.c b/drivers/media/platform/rockchip-vpu/rockchip_vpu_dec.c
new file mode 100644
index 0000000..33e9a89
--- /dev/null
+++ b/drivers/media/platform/rockchip-vpu/rockchip_vpu_dec.c
@@ -0,0 +1,994 @@
+/*
+ * Rockchip VPU codec driver
+ *
+ * Copyright (C) 2014 Rockchip Electronics Co., Ltd.
+ *	Hertz Wong <hertz.wong@xxxxxxxxxxxxxx>
+ *
+ * Copyright (C) 2014 Google, Inc.
+ *	Tomasz Figa <tfiga@xxxxxxxxxxxx>
+ *
+ * Based on s5p-mfc driver by Samsung Electronics Co., Ltd.
+ *
+ * Copyright (C) 2010-2011 Samsung Electronics Co., Ltd.
+ *
+ * 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 "rockchip_vpu_common.h"
+
+#include <linux/module.h>
+#include <linux/version.h>
+#include <linux/videodev2.h>
+
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-event.h>
+#include <media/videobuf2-core.h>
+#include <media/videobuf2-dma-sg.h>
+
+#include "rockchip_vpu_dec.h"
+#include "rockchip_vpu_hw.h"
+
+#define DEF_SRC_FMT_DEC				V4L2_PIX_FMT_H264_SLICE
+#define DEF_DST_FMT_DEC				V4L2_PIX_FMT_NV12
+
+#define ROCKCHIP_DEC_MIN_WIDTH			48U
+#define ROCKCHIP_DEC_MAX_WIDTH			3840U
+#define ROCKCHIP_DEC_MIN_HEIGHT			48U
+#define ROCKCHIP_DEC_MAX_HEIGHT			2160U
+
+static struct rockchip_vpu_fmt formats[] = {
+	{
+		.name = "4:2:0 1 plane Y/CbCr",
+		.fourcc = V4L2_PIX_FMT_NV12,
+		.vpu_type = RK_VPU_NONE,
+		.codec_mode = RK_VPU_CODEC_NONE,
+		.num_planes = 1,
+		.depth = { 12 },
+	},
+	{
+		.name = "Frames of VP8 Decoded Stream",
+		.fourcc = V4L2_PIX_FMT_VP8_FRAME,
+		.vpu_type = RK3288_VPU,
+		.codec_mode = RK3288_VPU_CODEC_VP8D,
+		.num_planes = 1,
+	},
+	{
+		.name = "Frames of VP8 Decoded Stream",
+		.fourcc = V4L2_PIX_FMT_VP8_FRAME,
+		.vpu_type = RK3229_VPU,
+		.codec_mode = RK3229_VPU_CODEC_VP8D,
+		.num_planes = 1,
+	},
+};
+
+static struct rockchip_vpu_fmt *find_format(u32 fourcc, bool bitstream,
+					    struct rockchip_vpu_dev *dev)
+{
+	unsigned int i;
+
+	vpu_debug_enter();
+
+	for (i = 0; i < ARRAY_SIZE(formats); i++) {
+		if (formats[i].fourcc != fourcc)
+			continue;
+		if (bitstream && formats[i].codec_mode != RK_VPU_CODEC_NONE
+		    && formats[i].vpu_type == dev->variant->vpu_type)
+			return &formats[i];
+		if (!bitstream && formats[i].codec_mode == RK_VPU_CODEC_NONE)
+			return &formats[i];
+	}
+
+	return NULL;
+}
+
+/* Indices of controls that need to be accessed directly. */
+enum {
+	ROCKCHIP_VPU_DEC_CTRL_VP8_FRAME_HDR,
+};
+
+static struct rockchip_vpu_control controls[0];
+
+static inline const void *get_ctrl_ptr(struct rockchip_vpu_ctx *ctx,
+				       unsigned id)
+{
+	struct v4l2_ctrl *ctrl = ctx->ctrls[id];
+
+	return ctrl->p_cur.p;
+}
+
+/* Query capabilities of the device */
+static int vidioc_querycap(struct file *file, void *priv,
+			   struct v4l2_capability *cap)
+{
+	struct rockchip_vpu_dev *dev = video_drvdata(file);
+
+	vpu_debug_enter();
+
+	strlcpy(cap->driver, ROCKCHIP_VPU_DEC_NAME, sizeof(cap->driver));
+	strlcpy(cap->card, dev->pdev->name, sizeof(cap->card));
+	strlcpy(cap->bus_info, "platform:" ROCKCHIP_VPU_NAME,
+		sizeof(cap->bus_info));
+
+	/*
+	 * This is only a mem-to-mem video device. The capture and output
+	 * device capability flags are left only for backward compatibility
+	 * and are scheduled for removal.
+	 */
+	cap->device_caps = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_STREAMING |
+	    V4L2_CAP_VIDEO_CAPTURE_MPLANE | V4L2_CAP_VIDEO_OUTPUT_MPLANE;
+	cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
+
+	vpu_debug_leave();
+
+	return 0;
+}
+
+static int vidioc_enum_framesizes(struct file *file, void *prov,
+				  struct v4l2_frmsizeenum *fsize)
+{
+	struct rockchip_vpu_dev *dev = video_drvdata(file);
+	struct v4l2_frmsize_stepwise *s = &fsize->stepwise;
+	struct rockchip_vpu_fmt *fmt;
+
+	if (fsize->index != 0) {
+		vpu_debug(0, "invalid frame size index (expected 0, got %d)\n",
+				fsize->index);
+		return -EINVAL;
+	}
+
+	fmt = find_format(fsize->pixel_format, true, dev);
+	if (!fmt) {
+		vpu_debug(0, "unsupported bitstream format (%08x)\n",
+				fsize->pixel_format);
+		return -EINVAL;
+	}
+
+	fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
+
+	s->min_width = ROCKCHIP_DEC_MIN_WIDTH;
+	s->max_width = ROCKCHIP_DEC_MAX_WIDTH;
+	s->step_width = MB_DIM;
+	s->min_height = ROCKCHIP_DEC_MIN_HEIGHT;
+	s->max_height = ROCKCHIP_DEC_MAX_HEIGHT;
+	s->step_height = MB_DIM;
+
+	return 0;
+}
+
+static int vidioc_enum_fmt(struct v4l2_fmtdesc *f, bool out,
+			   struct rockchip_vpu_dev *dev)
+{
+	struct rockchip_vpu_fmt *fmt;
+	int i, j = 0;
+
+	vpu_debug_enter();
+
+	for (i = 0; i < ARRAY_SIZE(formats); ++i) {
+		if (out && formats[i].codec_mode == RK_VPU_CODEC_NONE)
+			continue;
+		else if (!out && (formats[i].codec_mode != RK_VPU_CODEC_NONE))
+			continue;
+		else if (formats[i].vpu_type != dev->variant->vpu_type &&
+			 formats[i].vpu_type != RK_VPU_NONE)
+			continue;
+
+		if (j == f->index) {
+			fmt = &formats[i];
+			strlcpy(f->description, fmt->name,
+				sizeof(f->description));
+			f->pixelformat = fmt->fourcc;
+
+			f->flags = 0;
+			if (formats[i].codec_mode != RK_VPU_CODEC_NONE)
+				f->flags |= V4L2_FMT_FLAG_COMPRESSED;
+
+			vpu_debug_leave();
+
+			return 0;
+		}
+
+		++j;
+	}
+
+	vpu_debug_leave();
+
+	return -EINVAL;
+}
+
+static int vidioc_enum_fmt_vid_cap_mplane(struct file *file, void *priv,
+					  struct v4l2_fmtdesc *f)
+{
+	struct rockchip_vpu_dev *dev = video_drvdata(file);
+
+	return vidioc_enum_fmt(f, false, dev);
+}
+
+static int vidioc_enum_fmt_vid_out_mplane(struct file *file, void *priv,
+					  struct v4l2_fmtdesc *f)
+{
+	struct rockchip_vpu_dev *dev = video_drvdata(file);
+
+	return vidioc_enum_fmt(f, true, dev);
+}
+
+static int vidioc_g_fmt(struct file *file, void *priv, struct v4l2_format *f)
+{
+	struct rockchip_vpu_ctx *ctx = fh_to_ctx(priv);
+
+	vpu_debug_enter();
+
+	vpu_debug(4, "f->type = %d\n", f->type);
+
+	switch (f->type) {
+	case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
+		f->fmt.pix_mp = ctx->dst_fmt;
+		break;
+
+	case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
+		f->fmt.pix_mp = ctx->src_fmt;
+		break;
+
+	default:
+		vpu_err("invalid buf type\n");
+		return -EINVAL;
+	}
+
+	vpu_debug_leave();
+
+	return 0;
+}
+
+static int vidioc_try_fmt(struct file *file, void *priv, struct v4l2_format *f)
+{
+	struct rockchip_vpu_dev *dev = video_drvdata(file);
+	struct rockchip_vpu_fmt *fmt;
+	struct v4l2_pix_format_mplane *pix_fmt_mp = &f->fmt.pix_mp;
+	char str[5];
+
+	vpu_debug_enter();
+
+	switch (f->type) {
+	case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
+		vpu_debug(4, "%s\n", fmt2str(f->fmt.pix_mp.pixelformat, str));
+
+		fmt = find_format(pix_fmt_mp->pixelformat, true, dev);
+		if (!fmt) {
+			vpu_err("failed to try output format\n");
+			return -EINVAL;
+		}
+
+		if (pix_fmt_mp->plane_fmt[0].sizeimage == 0) {
+			vpu_err("sizeimage of output format must be given\n");
+			return -EINVAL;
+		}
+
+		pix_fmt_mp->plane_fmt[0].bytesperline = 0;
+		break;
+
+	case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
+		vpu_debug(4, "%s\n", fmt2str(f->fmt.pix_mp.pixelformat, str));
+
+		fmt = find_format(pix_fmt_mp->pixelformat, false, dev);
+		if (!fmt) {
+			vpu_err("failed to try capture format\n");
+			return -EINVAL;
+		}
+
+		if (fmt->num_planes != pix_fmt_mp->num_planes) {
+			vpu_err("plane number mismatches on capture format\n");
+			return -EINVAL;
+		}
+
+		/* Limit to hardware min/max. */
+		pix_fmt_mp->width = clamp(pix_fmt_mp->width,
+					  ROCKCHIP_DEC_MIN_WIDTH,
+					  ROCKCHIP_DEC_MAX_WIDTH);
+		pix_fmt_mp->height = clamp(pix_fmt_mp->height,
+					   ROCKCHIP_DEC_MIN_HEIGHT,
+					   ROCKCHIP_DEC_MAX_HEIGHT);
+
+		/* Round up to macroblocks. */
+		pix_fmt_mp->width = round_up(pix_fmt_mp->width, MB_DIM);
+		pix_fmt_mp->height = round_up(pix_fmt_mp->height, MB_DIM);
+		break;
+
+	default:
+		vpu_err("invalid buf type\n");
+		return -EINVAL;
+	}
+
+	vpu_debug_leave();
+
+	return 0;
+}
+
+static int vidioc_s_fmt(struct file *file, void *priv, struct v4l2_format *f)
+{
+	struct v4l2_pix_format_mplane *pix_fmt_mp = &f->fmt.pix_mp;
+	struct rockchip_vpu_ctx *ctx = fh_to_ctx(priv);
+	unsigned int mb_width, mb_height;
+	struct rockchip_vpu_dev *dev = ctx->dev;
+	struct rockchip_vpu_fmt *fmt;
+	int ret = 0;
+	int i;
+
+	vpu_debug_enter();
+
+	switch (f->type) {
+	case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
+		/* Change not allowed if any queue is streaming. */
+		if (vb2_is_streaming(&ctx->vq_src)
+		    || vb2_is_streaming(&ctx->vq_dst)) {
+			ret = -EBUSY;
+			goto out;
+		}
+		/*
+		 * Pixel format change is not allowed when the other queue has
+		 * buffers allocated.
+		 */
+		if (vb2_is_busy(&ctx->vq_dst)
+		    && pix_fmt_mp->pixelformat != ctx->src_fmt.pixelformat) {
+			ret = -EBUSY;
+			goto out;
+		}
+
+		ret = vidioc_try_fmt(file, priv, f);
+		if (ret)
+			goto out;
+
+		ctx->vpu_src_fmt = find_format(pix_fmt_mp->pixelformat,
+					       true, dev);
+		ctx->src_fmt = *pix_fmt_mp;
+		break;
+
+	case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
+		/*
+		 * Change not allowed if this queue is streaming.
+		 *
+		 * NOTE: We allow changes with source queue streaming
+		 * to support resolution change in decoded stream.
+		 */
+		if (vb2_is_streaming(&ctx->vq_dst)) {
+			ret = -EBUSY;
+			goto out;
+		}
+		/*
+		 * Pixel format change is not allowed when the other queue has
+		 * buffers allocated.
+		 */
+		if (vb2_is_busy(&ctx->vq_src)
+		    && pix_fmt_mp->pixelformat != ctx->dst_fmt.pixelformat) {
+			ret = -EBUSY;
+			goto out;
+		}
+
+		ret = vidioc_try_fmt(file, priv, f);
+		if (ret)
+			goto out;
+
+		fmt = find_format(pix_fmt_mp->pixelformat, false, dev);
+		ctx->vpu_dst_fmt = fmt;
+
+		mb_width = MB_WIDTH(pix_fmt_mp->width);
+		mb_height = MB_HEIGHT(pix_fmt_mp->height);
+
+		vpu_debug(0, "CAPTURE codec mode: %d\n", fmt->codec_mode);
+		vpu_debug(0, "fmt - w: %d, h: %d, mb - w: %d, h: %d\n",
+			  pix_fmt_mp->width, pix_fmt_mp->height,
+			  mb_width, mb_height);
+
+		for (i = 0; i < fmt->num_planes; ++i) {
+			pix_fmt_mp->plane_fmt[i].bytesperline =
+				mb_width * MB_DIM * fmt->depth[i] / 8;
+			pix_fmt_mp->plane_fmt[i].sizeimage =
+				pix_fmt_mp->plane_fmt[i].bytesperline
+				* mb_height * MB_DIM;
+			/*
+			 * All of multiplanar formats we support have chroma
+			 * planes subsampled by 2.
+			 */
+			if (i != 0)
+				pix_fmt_mp->plane_fmt[i].sizeimage /= 2;
+		}
+
+		ctx->dst_fmt = *pix_fmt_mp;
+		break;
+
+	default:
+		vpu_err("invalid buf type\n");
+		return -EINVAL;
+	}
+
+out:
+	vpu_debug_leave();
+
+	return ret;
+}
+
+static int vidioc_reqbufs(struct file *file, void *priv,
+			  struct v4l2_requestbuffers *reqbufs)
+{
+	struct rockchip_vpu_ctx *ctx = fh_to_ctx(priv);
+	int ret;
+
+	vpu_debug_enter();
+
+	switch (reqbufs->type) {
+	case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
+		ret = vb2_reqbufs(&ctx->vq_src, reqbufs);
+		if (ret != 0) {
+			vpu_err("error in vb2_reqbufs() for E(S)\n");
+			goto out;
+		}
+		break;
+
+	case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
+		ret = vb2_reqbufs(&ctx->vq_dst, reqbufs);
+		if (ret != 0) {
+			vpu_err("error in vb2_reqbufs() for E(D)\n");
+			goto out;
+		}
+		break;
+
+	default:
+		vpu_err("invalid buf type\n");
+		ret = -EINVAL;
+		goto out;
+	}
+
+out:
+	vpu_debug_leave();
+
+	return ret;
+}
+
+static int vidioc_querybuf(struct file *file, void *priv,
+			   struct v4l2_buffer *buf)
+{
+	struct rockchip_vpu_ctx *ctx = fh_to_ctx(priv);
+	int ret;
+
+	vpu_debug_enter();
+
+	switch (buf->type) {
+	case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
+		ret = vb2_querybuf(&ctx->vq_dst, buf);
+		if (ret != 0) {
+			vpu_err("error in vb2_querybuf() for E(D)\n");
+			goto out;
+		}
+
+		buf->m.planes[0].m.mem_offset += DST_QUEUE_OFF_BASE;
+		break;
+
+	case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
+		ret = vb2_querybuf(&ctx->vq_src, buf);
+		if (ret != 0) {
+			vpu_err("error in vb2_querybuf() for E(S)\n");
+			goto out;
+		}
+		break;
+
+	default:
+		vpu_err("invalid buf type\n");
+		ret = -EINVAL;
+		goto out;
+	}
+
+out:
+	vpu_debug_leave();
+
+	return ret;
+}
+
+/* Queue a buffer */
+static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
+{
+	struct rockchip_vpu_ctx *ctx = fh_to_ctx(priv);
+	int ret;
+	int i;
+
+	vpu_debug_enter();
+
+	for (i = 0; i < buf->length; i++)
+		vpu_debug(4, "plane[%d]->length %d bytesused %d\n",
+				i, buf->m.planes[i].length,
+				buf->m.planes[i].bytesused);
+
+	switch (buf->type) {
+	case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
+		ret = vb2_qbuf(&ctx->vq_src, buf);
+		vpu_debug(4, "OUTPUT_MPLANE : vb2_qbuf return %d\n", ret);
+		break;
+
+	case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
+		ret = vb2_qbuf(&ctx->vq_dst, buf);
+		vpu_debug(4, "CAPTURE_MPLANE: vb2_qbuf return %d\n", ret);
+		break;
+
+	default:
+		ret = -EINVAL;
+	}
+
+	vpu_debug_leave();
+
+	return ret;
+}
+
+/* Dequeue a buffer */
+static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
+{
+	struct rockchip_vpu_ctx *ctx = fh_to_ctx(priv);
+	int ret;
+
+	vpu_debug_enter();
+
+	switch (buf->type) {
+	case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
+		ret = vb2_dqbuf(&ctx->vq_src, buf, file->f_flags & O_NONBLOCK);
+		break;
+
+	case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
+		ret = vb2_dqbuf(&ctx->vq_dst, buf, file->f_flags & O_NONBLOCK);
+		break;
+
+	default:
+		ret = -EINVAL;
+	}
+
+	vpu_debug_leave();
+
+	return ret;
+}
+
+/* Export DMA buffer */
+static int vidioc_expbuf(struct file *file, void *priv,
+			 struct v4l2_exportbuffer *eb)
+{
+	struct rockchip_vpu_ctx *ctx = fh_to_ctx(priv);
+	int ret;
+
+	vpu_debug_enter();
+
+	switch (eb->type) {
+	case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
+		ret = vb2_expbuf(&ctx->vq_src, eb);
+		break;
+
+	case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
+		ret = vb2_expbuf(&ctx->vq_dst, eb);
+		break;
+
+	default:
+		ret = -EINVAL;
+	}
+
+	vpu_debug_leave();
+
+	return ret;
+}
+
+/* Stream on */
+static int vidioc_streamon(struct file *file, void *priv,
+			   enum v4l2_buf_type type)
+{
+	struct rockchip_vpu_ctx *ctx = fh_to_ctx(priv);
+	int ret;
+
+	vpu_debug_enter();
+
+	switch (type) {
+	case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
+		ret = vb2_streamon(&ctx->vq_src, type);
+		break;
+
+	case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
+		ret = vb2_streamon(&ctx->vq_dst, type);
+		break;
+
+	default:
+		ret = -EINVAL;
+	}
+
+	vpu_debug_leave();
+
+	return ret;
+}
+
+/* Stream off, which equals to a pause */
+static int vidioc_streamoff(struct file *file, void *priv,
+			    enum v4l2_buf_type type)
+{
+	struct rockchip_vpu_ctx *ctx = fh_to_ctx(priv);
+	int ret;
+
+	vpu_debug_enter();
+
+	switch (type) {
+	case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
+		ret = vb2_streamoff(&ctx->vq_src, type);
+		break;
+
+	case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
+		ret = vb2_streamoff(&ctx->vq_dst, type);
+		break;
+
+	default:
+		ret = -EINVAL;
+	}
+
+	vpu_debug_leave();
+
+	return ret;
+}
+
+static int rockchip_vpu_dec_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+	struct rockchip_vpu_ctx *ctx = ctrl_to_ctx(ctrl);
+	struct rockchip_vpu_dev *dev = ctx->dev;
+	int ret = 0;
+
+	vpu_debug_enter();
+
+	vpu_debug(4, "ctrl id %d\n", ctrl->id);
+
+	switch (ctrl->id) {
+	case V4L2_CID_MPEG_VIDEO_VP8_FRAME_HDR:
+		/* These controls are used directly. */
+		break;
+
+	default:
+		v4l2_err(&dev->v4l2_dev, "Invalid control, id=%d, val=%d\n",
+			 ctrl->id, ctrl->val);
+		ret = -EINVAL;
+	}
+
+	vpu_debug_leave();
+
+	return ret;
+}
+
+static const struct v4l2_ctrl_ops rockchip_vpu_dec_ctrl_ops = {
+	.s_ctrl = rockchip_vpu_dec_s_ctrl,
+};
+
+static const struct v4l2_ioctl_ops rockchip_vpu_dec_ioctl_ops = {
+	.vidioc_querycap = vidioc_querycap,
+	.vidioc_enum_framesizes = vidioc_enum_framesizes,
+	.vidioc_enum_fmt_vid_cap_mplane = vidioc_enum_fmt_vid_cap_mplane,
+	.vidioc_enum_fmt_vid_out_mplane = vidioc_enum_fmt_vid_out_mplane,
+	.vidioc_g_fmt_vid_cap_mplane = vidioc_g_fmt,
+	.vidioc_g_fmt_vid_out_mplane = vidioc_g_fmt,
+	.vidioc_try_fmt_vid_cap_mplane = vidioc_try_fmt,
+	.vidioc_try_fmt_vid_out_mplane = vidioc_try_fmt,
+	.vidioc_s_fmt_vid_cap_mplane = vidioc_s_fmt,
+	.vidioc_s_fmt_vid_out_mplane = vidioc_s_fmt,
+	.vidioc_reqbufs = vidioc_reqbufs,
+	.vidioc_querybuf = vidioc_querybuf,
+	.vidioc_qbuf = vidioc_qbuf,
+	.vidioc_dqbuf = vidioc_dqbuf,
+	.vidioc_expbuf = vidioc_expbuf,
+	.vidioc_streamon = vidioc_streamon,
+	.vidioc_streamoff = vidioc_streamoff,
+};
+
+static int rockchip_vpu_queue_setup(struct vb2_queue *vq,
+				  const void *parg,
+				  unsigned int *buf_count,
+				  unsigned int *plane_count,
+				  unsigned int psize[], void *allocators[])
+{
+	struct rockchip_vpu_ctx *ctx = fh_to_ctx(vq->drv_priv);
+	int ret = 0;
+
+	vpu_debug_enter();
+
+	switch (vq->type) {
+	case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
+		*plane_count = ctx->vpu_src_fmt->num_planes;
+
+		if (*buf_count < 1)
+			*buf_count = 1;
+
+		if (*buf_count > VIDEO_MAX_FRAME)
+			*buf_count = VIDEO_MAX_FRAME;
+
+		psize[0] = ctx->src_fmt.plane_fmt[0].sizeimage;
+		allocators[0] = ctx->dev->alloc_ctx;
+		vpu_debug(0, "output psize[%d]: %d\n", 0, psize[0]);
+		break;
+
+	case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
+		*plane_count = ctx->vpu_dst_fmt->num_planes;
+
+		if (*buf_count < 1)
+			*buf_count = 1;
+
+		if (*buf_count > VIDEO_MAX_FRAME)
+			*buf_count = VIDEO_MAX_FRAME;
+
+		psize[0] = round_up(ctx->dst_fmt.plane_fmt[0].sizeimage, 8);
+		allocators[0] = ctx->dev->alloc_ctx;
+
+		vpu_debug(0, "capture psize[%d]: %d\n", 0, psize[0]);
+		break;
+
+	default:
+		vpu_err("invalid queue type: %d\n", vq->type);
+		ret = -EINVAL;
+	}
+
+	vpu_debug_leave();
+
+	return ret;
+}
+
+static int rockchip_vpu_buf_init(struct vb2_buffer *vb)
+{
+	struct vb2_queue *vq = vb->vb2_queue;
+	struct rockchip_vpu_ctx *ctx = fh_to_ctx(vq->drv_priv);
+
+	vpu_debug_enter();
+
+	if (vq->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
+		ctx->dst_bufs[vb->index] = vb;
+
+	vpu_debug_leave();
+
+	return 0;
+}
+
+static void rockchip_vpu_buf_cleanup(struct vb2_buffer *vb)
+{
+	struct vb2_queue *vq = vb->vb2_queue;
+	struct rockchip_vpu_ctx *ctx = fh_to_ctx(vq->drv_priv);
+
+	vpu_debug_enter();
+
+	if (vq->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
+		ctx->dst_bufs[vb->index] = NULL;
+
+	vpu_debug_leave();
+}
+
+static int rockchip_vpu_buf_prepare(struct vb2_buffer *vb)
+{
+	struct vb2_queue *vq = vb->vb2_queue;
+	struct rockchip_vpu_ctx *ctx = fh_to_ctx(vq->drv_priv);
+	int ret = 0;
+	int i;
+
+	vpu_debug_enter();
+
+	switch (vq->type) {
+	case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
+		vpu_debug(4, "plane size: %ld, dst size: %d\n",
+				vb2_plane_size(vb, 0),
+				ctx->src_fmt.plane_fmt[0].sizeimage);
+
+		if (vb2_plane_size(vb, 0)
+		    < ctx->src_fmt.plane_fmt[0].sizeimage) {
+			vpu_err("plane size is too small for output\n");
+			ret = -EINVAL;
+		}
+		break;
+
+	case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
+		for (i = 0; i < ctx->vpu_dst_fmt->num_planes; ++i) {
+			vpu_debug(4, "plane %d size: %ld, sizeimage: %u\n", i,
+					vb2_plane_size(vb, i),
+					ctx->dst_fmt.plane_fmt[i].sizeimage);
+
+			if (vb2_plane_size(vb, i)
+			    < ctx->dst_fmt.plane_fmt[i].sizeimage) {
+				vpu_err("size of plane %d is too small for capture\n",
+					i);
+				break;
+			}
+		}
+
+		if (i != ctx->vpu_dst_fmt->num_planes)
+			ret = -EINVAL;
+		break;
+
+	default:
+		vpu_err("invalid queue type: %d\n", vq->type);
+		ret = -EINVAL;
+	}
+
+	vpu_debug_leave();
+
+	return ret;
+}
+
+static int rockchip_vpu_start_streaming(struct vb2_queue *q, unsigned int count)
+{
+	int ret = 0;
+	struct rockchip_vpu_ctx *ctx = fh_to_ctx(q->drv_priv);
+	struct rockchip_vpu_dev *dev = ctx->dev;
+	bool ready = false;
+
+	vpu_debug_enter();
+
+	if (q->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
+		ret = rockchip_vpu_init(ctx);
+		if (ret < 0) {
+			vpu_err("rockchip_vpu_init failed\n");
+			return ret;
+		}
+
+		ready = vb2_is_streaming(&ctx->vq_src);
+	} else if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
+		ready = vb2_is_streaming(&ctx->vq_dst);
+	}
+
+	if (ready)
+		rockchip_vpu_try_context(dev, ctx);
+
+	vpu_debug_leave();
+
+	return 0;
+}
+
+static void rockchip_vpu_stop_streaming(struct vb2_queue *q)
+{
+	unsigned long flags;
+	struct rockchip_vpu_ctx *ctx = fh_to_ctx(q->drv_priv);
+	struct rockchip_vpu_dev *dev = ctx->dev;
+	struct rockchip_vpu_buf *b;
+	LIST_HEAD(queue);
+	int i;
+
+	vpu_debug_enter();
+
+	spin_lock_irqsave(&dev->irqlock, flags);
+
+	list_del_init(&ctx->list);
+
+	switch (q->type) {
+	case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
+		list_splice_init(&ctx->dst_queue, &queue);
+		break;
+
+	case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
+		list_splice_init(&ctx->src_queue, &queue);
+		break;
+
+	default:
+		break;
+	}
+
+	spin_unlock_irqrestore(&dev->irqlock, flags);
+
+	wait_event(dev->run_wq, dev->current_ctx != ctx);
+
+	while (!list_empty(&queue)) {
+		b = list_first_entry(&queue, struct rockchip_vpu_buf, list);
+		for (i = 0; i < b->b.vb2_buf.num_planes; i++)
+			vb2_set_plane_payload(&b->b.vb2_buf, i, 0);
+		vb2_buffer_done(&b->b.vb2_buf, VB2_BUF_STATE_ERROR);
+		list_del(&b->list);
+	}
+
+	if (q->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
+		rockchip_vpu_deinit(ctx);
+
+	vpu_debug_leave();
+}
+
+static void rockchip_vpu_buf_queue(struct vb2_buffer *vb)
+{
+	struct vb2_queue *vq = vb->vb2_queue;
+	struct rockchip_vpu_ctx *ctx = fh_to_ctx(vq->drv_priv);
+	struct rockchip_vpu_dev *dev = ctx->dev;
+	struct rockchip_vpu_buf *vpu_buf;
+	unsigned long flags;
+
+	vpu_debug_enter();
+
+	switch (vq->type) {
+	case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
+		vpu_buf = vb_to_buf(vb);
+
+		/* Mark destination as available for use by VPU */
+		spin_lock_irqsave(&dev->irqlock, flags);
+
+		list_add_tail(&vpu_buf->list, &ctx->dst_queue);
+
+		spin_unlock_irqrestore(&dev->irqlock, flags);
+		break;
+
+	case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
+		vpu_buf = vb_to_buf(vb);
+
+		spin_lock_irqsave(&dev->irqlock, flags);
+
+		list_add_tail(&vpu_buf->list, &ctx->src_queue);
+
+		spin_unlock_irqrestore(&dev->irqlock, flags);
+		break;
+
+	default:
+		vpu_err("unsupported buffer type (%d)\n", vq->type);
+	}
+
+	if (vb2_is_streaming(&ctx->vq_src) && vb2_is_streaming(&ctx->vq_dst))
+		rockchip_vpu_try_context(dev, ctx);
+
+	vpu_debug_leave();
+}
+
+static struct vb2_ops rockchip_vpu_dec_qops = {
+	.queue_setup = rockchip_vpu_queue_setup,
+	.wait_prepare = vb2_ops_wait_prepare,
+	.wait_finish = vb2_ops_wait_finish,
+	.buf_init = rockchip_vpu_buf_init,
+	.buf_prepare = rockchip_vpu_buf_prepare,
+	.buf_cleanup = rockchip_vpu_buf_cleanup,
+	.start_streaming = rockchip_vpu_start_streaming,
+	.stop_streaming = rockchip_vpu_stop_streaming,
+	.buf_queue = rockchip_vpu_buf_queue,
+};
+
+struct vb2_ops *get_dec_queue_ops(void)
+{
+	return &rockchip_vpu_dec_qops;
+}
+
+const struct v4l2_ioctl_ops *get_dec_v4l2_ioctl_ops(void)
+{
+	return &rockchip_vpu_dec_ioctl_ops;
+}
+
+static void rockchip_vpu_dec_prepare_run(struct rockchip_vpu_ctx *ctx)
+{
+	struct vb2_v4l2_buffer *src =
+		to_vb2_v4l2_buffer(&ctx->run.src->b.vb2_buf);
+
+	v4l2_ctrl_apply_request(&ctx->ctrl_handler, src->request);
+
+}
+
+static void rockchip_vpu_dec_run_done(struct rockchip_vpu_ctx *ctx,
+				    enum vb2_buffer_state result)
+{
+	struct v4l2_plane_pix_format *plane_fmts = ctx->dst_fmt.plane_fmt;
+	struct vb2_buffer *dst = &ctx->run.dst->b.vb2_buf;
+	int i;
+
+	if (result != VB2_BUF_STATE_DONE) {
+		/* Assume no payload after failed run. */
+		for (i = 0; i < dst->num_planes; ++i)
+			vb2_set_plane_payload(dst, i, 0);
+		return;
+	}
+
+	for (i = 0; i < dst->num_planes; ++i)
+		vb2_set_plane_payload(dst, i, plane_fmts[i].sizeimage);
+}
+
+static const struct rockchip_vpu_run_ops rockchip_vpu_dec_run_ops = {
+	.prepare_run = rockchip_vpu_dec_prepare_run,
+	.run_done = rockchip_vpu_dec_run_done,
+};
+
+int rockchip_vpu_dec_init(struct rockchip_vpu_ctx *ctx)
+{
+
+	ctx->run_ops = &rockchip_vpu_dec_run_ops;
+
+	return rockchip_vpu_ctrls_setup(ctx, &rockchip_vpu_dec_ctrl_ops,
+					controls, ARRAY_SIZE(controls), NULL);
+}
+
+void rockchip_vpu_dec_exit(struct rockchip_vpu_ctx *ctx)
+{
+	rockchip_vpu_ctrls_delete(ctx);
+}
diff --git a/drivers/media/platform/rockchip-vpu/rockchip_vpu_dec.h b/drivers/media/platform/rockchip-vpu/rockchip_vpu_dec.h
new file mode 100644
index 0000000..267a089
--- /dev/null
+++ b/drivers/media/platform/rockchip-vpu/rockchip_vpu_dec.h
@@ -0,0 +1,33 @@
+/*
+ * Rockchip VPU codec driver
+ *
+ * Copyright (C) 2014 Rockchip Electronics Co., Ltd.
+ *	Hertz Wong <hertz.wong@xxxxxxxxxxxxxx>
+ *
+ * Copyright (C) 2014 Google, Inc.
+ *	Tomasz Figa <tfiga@xxxxxxxxxxxx>
+ *
+ * Based on s5p-mfc driver by Samsung Electronics Co., Ltd.
+ *
+ * Copyright (C) 2011 Samsung Electronics Co., Ltd.
+ *
+ * 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_VPU_DEC_H_
+#define ROCKCHIP_VPU_DEC_H_
+
+struct vb2_ops *get_dec_queue_ops(void);
+const struct v4l2_ioctl_ops *get_dec_v4l2_ioctl_ops(void);
+struct rockchip_vpu_fmt *get_dec_def_fmt(bool src);
+int rockchip_vpu_dec_init(struct rockchip_vpu_ctx *ctx);
+void rockchip_vpu_dec_exit(struct rockchip_vpu_ctx *ctx);
+
+#endif /* ROCKCHIP_VPU_DEC_H_ */
diff --git a/drivers/media/platform/rockchip-vpu/rockchip_vpu_hw.c b/drivers/media/platform/rockchip-vpu/rockchip_vpu_hw.c
new file mode 100644
index 0000000..dc7abc7
--- /dev/null
+++ b/drivers/media/platform/rockchip-vpu/rockchip_vpu_hw.c
@@ -0,0 +1,278 @@
+/*
+ * Rockchip VPU codec driver
+ *
+ * Copyright (C) 2014 Google, Inc.
+ *	Tomasz Figa <tfiga@xxxxxxxxxxxx>
+ *
+ * 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 "rockchip_vpu_common.h"
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/pm.h>
+#include <linux/pm_runtime.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+
+#include <asm/dma-iommu.h>
+
+/**
+ * struct rockchip_vpu_codec_ops - codec mode specific operations
+ *
+ * @init:	Prepare for streaming. Called from VB2 .start_streaming()
+ *		when streaming from both queues is being enabled.
+ * @exit:	Clean-up after streaming. Called from VB2 .stop_streaming()
+ *		when streaming from first of both enabled queues is being
+ *		disabled.
+ * @run:	Start single {en,de)coding run. Called from non-atomic context
+ *		to indicate that a pair of buffers is ready and the hardware
+ *		should be programmed and started.
+ * @done:	Read back processing results and additional data from hardware.
+ * @reset:	Reset the hardware in case of a timeout.
+ */
+struct rockchip_vpu_codec_ops {
+	int (*init)(struct rockchip_vpu_ctx *);
+	void (*exit)(struct rockchip_vpu_ctx *);
+
+	int (*irq)(int, struct rockchip_vpu_dev *);
+	void (*run)(struct rockchip_vpu_ctx *);
+	void (*done)(struct rockchip_vpu_ctx *, enum vb2_buffer_state);
+	void (*reset)(struct rockchip_vpu_ctx *);
+};
+
+/*
+ * Hardware control routines.
+ */
+
+void rockchip_vpu_power_on(struct rockchip_vpu_dev *vpu)
+{
+	vpu_debug_enter();
+
+	/* TODO: Clock gating. */
+
+	pm_runtime_get_sync(vpu->dev);
+
+	vpu_debug_leave();
+}
+
+static void rockchip_vpu_power_off(struct rockchip_vpu_dev *vpu)
+{
+	vpu_debug_enter();
+
+	pm_runtime_mark_last_busy(vpu->dev);
+	pm_runtime_put_autosuspend(vpu->dev);
+
+	/* TODO: Clock gating. */
+
+	vpu_debug_leave();
+}
+
+/*
+ * Interrupt handlers.
+ */
+
+static irqreturn_t vdpu_irq(int irq, void *dev_id)
+{
+	struct rockchip_vpu_dev *vpu = dev_id;
+	struct rockchip_vpu_ctx *ctx = vpu->current_ctx;
+
+	if (!ctx->hw.codec_ops->irq(irq, vpu)) {
+		rockchip_vpu_power_off(vpu);
+		cancel_delayed_work(&vpu->watchdog_work);
+
+		ctx->hw.codec_ops->done(ctx, VB2_BUF_STATE_DONE);
+	}
+
+	return IRQ_HANDLED;
+}
+
+static void rockchip_vpu_watchdog(struct work_struct *work)
+{
+	struct rockchip_vpu_dev *vpu = container_of(to_delayed_work(work),
+					struct rockchip_vpu_dev, watchdog_work);
+	struct rockchip_vpu_ctx *ctx = vpu->current_ctx;
+	unsigned long flags;
+
+	spin_lock_irqsave(&vpu->irqlock, flags);
+
+	ctx->hw.codec_ops->reset(ctx);
+
+	spin_unlock_irqrestore(&vpu->irqlock, flags);
+
+	vpu_err("frame processing timed out!\n");
+
+	rockchip_vpu_power_off(vpu);
+	ctx->hw.codec_ops->done(ctx, VB2_BUF_STATE_ERROR);
+}
+
+/*
+ * Initialization/clean-up.
+ */
+
+#if defined(CONFIG_ROCKCHIP_IOMMU)
+static int rockchip_vpu_iommu_init(struct rockchip_vpu_dev *vpu)
+{
+	int ret;
+
+	vpu->mapping = arm_iommu_create_mapping(&platform_bus_type,
+						0x10000000, SZ_2G);
+	if (IS_ERR(vpu->mapping)) {
+		ret = PTR_ERR(vpu->mapping);
+		return ret;
+	}
+
+	vpu->dev->dma_parms = devm_kzalloc(vpu->dev,
+				sizeof(*vpu->dev->dma_parms), GFP_KERNEL);
+	if (!vpu->dev->dma_parms)
+		goto err_release_mapping;
+
+	dma_set_max_seg_size(vpu->dev, 0xffffffffu);
+
+	ret = arm_iommu_attach_device(vpu->dev, vpu->mapping);
+	if (ret)
+		goto err_release_mapping;
+
+	return 0;
+
+err_release_mapping:
+	arm_iommu_release_mapping(vpu->mapping);
+
+	return ret;
+}
+
+static void rockchip_vpu_iommu_cleanup(struct rockchip_vpu_dev *vpu)
+{
+	arm_iommu_detach_device(vpu->dev);
+	arm_iommu_release_mapping(vpu->mapping);
+}
+#else
+static inline int rockchip_vpu_iommu_init(struct rockchip_vpu_dev *vpu)
+{
+	return 0;
+}
+
+static inline void rockchip_vpu_iommu_cleanup(struct rockchip_vpu_dev *vpu) { }
+#endif
+
+int rockchip_vpu_hw_probe(struct rockchip_vpu_dev *vpu)
+{
+	struct resource *res;
+	int irq_dec;
+	int ret;
+
+	pr_info("probe device %s\n", dev_name(vpu->dev));
+
+	INIT_DELAYED_WORK(&vpu->watchdog_work, rockchip_vpu_watchdog);
+
+	vpu->aclk = devm_clk_get(vpu->dev, "aclk");
+	if (IS_ERR(vpu->aclk)) {
+		dev_err(vpu->dev, "failed to get aclk\n");
+		return PTR_ERR(vpu->aclk);
+	}
+
+	vpu->hclk = devm_clk_get(vpu->dev, "hclk");
+	if (IS_ERR(vpu->hclk)) {
+		dev_err(vpu->dev, "failed to get hclk\n");
+		return PTR_ERR(vpu->hclk);
+	}
+
+	/*
+	 * Bump ACLK to max. possible freq. (400 MHz) to improve performance.
+	 */
+	clk_set_rate(vpu->aclk, 400*1000*1000);
+
+	res = platform_get_resource(vpu->pdev, IORESOURCE_MEM, 0);
+	vpu->base = devm_ioremap_resource(vpu->dev, res);
+	if (IS_ERR(vpu->base))
+		return PTR_ERR(vpu->base);
+
+	clk_prepare_enable(vpu->aclk);
+	clk_prepare_enable(vpu->hclk);
+
+	vpu->dec_base = vpu->base + vpu->variant->dec_offset;
+
+	ret = dma_set_coherent_mask(vpu->dev, DMA_BIT_MASK(32));
+	if (ret) {
+		dev_err(vpu->dev, "could not set DMA coherent mask\n");
+		goto err_power;
+	}
+
+	ret = rockchip_vpu_iommu_init(vpu);
+	if (ret)
+		goto err_power;
+
+	irq_dec = platform_get_irq_byname(vpu->pdev, "vdpu");
+	if (irq_dec <= 0) {
+		dev_err(vpu->dev, "could not get vdpu IRQ\n");
+		ret = -ENXIO;
+		goto err_iommu;
+	}
+
+	ret = devm_request_threaded_irq(vpu->dev, irq_dec, NULL, vdpu_irq,
+					IRQF_ONESHOT, dev_name(vpu->dev), vpu);
+	if (ret) {
+		dev_err(vpu->dev, "could not request vdpu IRQ\n");
+		goto err_iommu;
+	}
+
+	pm_runtime_set_autosuspend_delay(vpu->dev, 100);
+	pm_runtime_use_autosuspend(vpu->dev);
+	pm_runtime_enable(vpu->dev);
+
+	return 0;
+
+err_iommu:
+	rockchip_vpu_iommu_cleanup(vpu);
+err_power:
+	clk_disable_unprepare(vpu->hclk);
+	clk_disable_unprepare(vpu->aclk);
+
+	return ret;
+}
+
+void rockchip_vpu_hw_remove(struct rockchip_vpu_dev *vpu)
+{
+	rockchip_vpu_iommu_cleanup(vpu);
+
+	pm_runtime_disable(vpu->dev);
+
+	clk_disable_unprepare(vpu->hclk);
+	clk_disable_unprepare(vpu->aclk);
+}
+
+static const struct rockchip_vpu_codec_ops mode_ops[0];
+
+void rockchip_vpu_run(struct rockchip_vpu_ctx *ctx)
+{
+	ctx->hw.codec_ops->run(ctx);
+}
+
+int rockchip_vpu_init(struct rockchip_vpu_ctx *ctx)
+{
+	enum rockchip_vpu_codec_mode codec_mode;
+
+	codec_mode = ctx->vpu_src_fmt->codec_mode; /* Decoder */
+
+	ctx->hw.codec_ops = &mode_ops[codec_mode];
+
+	return ctx->hw.codec_ops->init(ctx);
+}
+
+void rockchip_vpu_deinit(struct rockchip_vpu_ctx *ctx)
+{
+	ctx->hw.codec_ops->exit(ctx);
+}
diff --git a/drivers/media/platform/rockchip-vpu/rockchip_vpu_hw.h b/drivers/media/platform/rockchip-vpu/rockchip_vpu_hw.h
new file mode 100644
index 0000000..975357da
--- /dev/null
+++ b/drivers/media/platform/rockchip-vpu/rockchip_vpu_hw.h
@@ -0,0 +1,78 @@
+/*
+ * Rockchip VPU codec driver
+ *
+ * Copyright (C) 2014 Google, Inc.
+ *	Tomasz Figa <tfiga@xxxxxxxxxxxx>
+ *
+ * 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_VPU_HW_H_
+#define ROCKCHIP_VPU_HW_H_
+
+#include <media/videobuf2-core.h>
+
+#define ROCKCHIP_HEADER_SIZE		1280
+#define ROCKCHIP_HW_PARAMS_SIZE		5487
+#define ROCKCHIP_RET_PARAMS_SIZE	488
+
+struct rockchip_vpu_dev;
+struct rockchip_vpu_ctx;
+struct rockchip_vpu_buf;
+
+/**
+ * enum rockchip_vpu_type - vpu type.
+ * @RK_VPU_NONE:	No vpu type. Used for RAW video formats.
+ * @RK3288_VPU:		Vpu on rk3288 soc.
+ * @RK3229_VPU:		Vpu on rk3229 soc.
+ * @RKVDEC:		Rkvdec.
+ */
+enum rockchip_vpu_type {
+	RK_VPU_NONE	= -1,
+	RK3288_VPU,
+	RK3229_VPU,
+};
+
+#define ROCKCHIP_VPU_MATCHES(type1, type2) \
+	(type1 == RK_VPU_NONE || type2 == RK_VPU_NONE || type1 == type2)
+
+/**
+ * struct rockchip_vpu_aux_buf - auxiliary DMA buffer for hardware data
+ * @cpu:	CPU pointer to the buffer.
+ * @dma:	DMA address of the buffer.
+ * @size:	Size of the buffer.
+ */
+struct rockchip_vpu_aux_buf {
+	void *cpu;
+	dma_addr_t dma;
+	size_t size;
+};
+
+/**
+ * struct rockchip_vpu_hw_ctx - Context private data of hardware code.
+ * @codec_ops:		Set of operations associated with current codec mode.
+ */
+struct rockchip_vpu_hw_ctx {
+	const struct rockchip_vpu_codec_ops *codec_ops;
+
+	/* Specific for particular codec modes. */
+};
+
+int rockchip_vpu_hw_probe(struct rockchip_vpu_dev *vpu);
+void rockchip_vpu_hw_remove(struct rockchip_vpu_dev *vpu);
+
+int rockchip_vpu_init(struct rockchip_vpu_ctx *ctx);
+void rockchip_vpu_deinit(struct rockchip_vpu_ctx *ctx);
+
+void rockchip_vpu_run(struct rockchip_vpu_ctx *ctx);
+
+void rockchip_vpu_power_on(struct rockchip_vpu_dev *vpu);
+
+#endif /* RK3288_VPU_HW_H_ */
-- 
1.9.1