media: platform: rename s5p-mfc/ to samsung/s5p-mfc/

As the end goal is to have platform drivers split by vendor,
rename s5p-mfc/ to samsung/s5p-mfc/.

Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

1 files changed, 0 insertions, 1680 deletions

diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc.c b/drivers/media/platform/s5p-mfc/s5p_mfc.c
deleted file mode 100644
index 761341934925..000000000000
--- a/drivers/media/platform/s5p-mfc/s5p_mfc.c
+++ /dev/null
@@ -1,1680 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Samsung S5P Multi Format Codec v 5.1
- *
- * Copyright (c) 2011 Samsung Electronics Co., Ltd.
- * Kamil Debski, <k.debski@samsung.com>
- */
-
-#include <linux/clk.h>
-#include <linux/delay.h>
-#include <linux/interrupt.h>
-#include <linux/io.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 <linux/of_device.h>
-#include <linux/of_reserved_mem.h>
-#include <media/videobuf2-v4l2.h>
-#include "s5p_mfc_common.h"
-#include "s5p_mfc_ctrl.h"
-#include "s5p_mfc_debug.h"
-#include "s5p_mfc_dec.h"
-#include "s5p_mfc_enc.h"
-#include "s5p_mfc_intr.h"
-#include "s5p_mfc_iommu.h"
-#include "s5p_mfc_opr.h"
-#include "s5p_mfc_cmd.h"
-#include "s5p_mfc_pm.h"
-
-#define S5P_MFC_DEC_NAME	"s5p-mfc-dec"
-#define S5P_MFC_ENC_NAME	"s5p-mfc-enc"
-
-int mfc_debug_level;
-module_param_named(debug, mfc_debug_level, int, S_IRUGO | S_IWUSR);
-MODULE_PARM_DESC(debug, "Debug level - higher value produces more verbose messages");
-
-static char *mfc_mem_size;
-module_param_named(mem, mfc_mem_size, charp, 0644);
-MODULE_PARM_DESC(mem, "Preallocated memory size for the firmware and context buffers");
-
-/* Helper functions for interrupt processing */
-
-/* Remove from hw execution round robin */
-void clear_work_bit(struct s5p_mfc_ctx *ctx)
-{
-	struct s5p_mfc_dev *dev = ctx->dev;
-
-	spin_lock(&dev->condlock);
-	__clear_bit(ctx->num, &dev->ctx_work_bits);
-	spin_unlock(&dev->condlock);
-}
-
-/* Add to hw execution round robin */
-void set_work_bit(struct s5p_mfc_ctx *ctx)
-{
-	struct s5p_mfc_dev *dev = ctx->dev;
-
-	spin_lock(&dev->condlock);
-	__set_bit(ctx->num, &dev->ctx_work_bits);
-	spin_unlock(&dev->condlock);
-}
-
-/* Remove from hw execution round robin */
-void clear_work_bit_irqsave(struct s5p_mfc_ctx *ctx)
-{
-	struct s5p_mfc_dev *dev = ctx->dev;
-	unsigned long flags;
-
-	spin_lock_irqsave(&dev->condlock, flags);
-	__clear_bit(ctx->num, &dev->ctx_work_bits);
-	spin_unlock_irqrestore(&dev->condlock, flags);
-}
-
-/* Add to hw execution round robin */
-void set_work_bit_irqsave(struct s5p_mfc_ctx *ctx)
-{
-	struct s5p_mfc_dev *dev = ctx->dev;
-	unsigned long flags;
-
-	spin_lock_irqsave(&dev->condlock, flags);
-	__set_bit(ctx->num, &dev->ctx_work_bits);
-	spin_unlock_irqrestore(&dev->condlock, flags);
-}
-
-int s5p_mfc_get_new_ctx(struct s5p_mfc_dev *dev)
-{
-	unsigned long flags;
-	int ctx;
-
-	spin_lock_irqsave(&dev->condlock, flags);
-	ctx = dev->curr_ctx;
-	do {
-		ctx = (ctx + 1) % MFC_NUM_CONTEXTS;
-		if (ctx == dev->curr_ctx) {
-			if (!test_bit(ctx, &dev->ctx_work_bits))
-				ctx = -EAGAIN;
-			break;
-		}
-	} while (!test_bit(ctx, &dev->ctx_work_bits));
-	spin_unlock_irqrestore(&dev->condlock, flags);
-
-	return ctx;
-}
-
-/* Wake up context wait_queue */
-static void wake_up_ctx(struct s5p_mfc_ctx *ctx, unsigned int reason,
-			unsigned int err)
-{
-	ctx->int_cond = 1;
-	ctx->int_type = reason;
-	ctx->int_err = err;
-	wake_up(&ctx->queue);
-}
-
-/* Wake up device wait_queue */
-static void wake_up_dev(struct s5p_mfc_dev *dev, unsigned int reason,
-			unsigned int err)
-{
-	dev->int_cond = 1;
-	dev->int_type = reason;
-	dev->int_err = err;
-	wake_up(&dev->queue);
-}
-
-void s5p_mfc_cleanup_queue(struct list_head *lh, struct vb2_queue *vq)
-{
-	struct s5p_mfc_buf *b;
-	int i;
-
-	while (!list_empty(lh)) {
-		b = list_entry(lh->next, struct s5p_mfc_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);
-	}
-}
-
-static void s5p_mfc_watchdog(struct timer_list *t)
-{
-	struct s5p_mfc_dev *dev = from_timer(dev, t, watchdog_timer);
-
-	if (test_bit(0, &dev->hw_lock))
-		atomic_inc(&dev->watchdog_cnt);
-	if (atomic_read(&dev->watchdog_cnt) >= MFC_WATCHDOG_CNT) {
-		/* This means that hw is busy and no interrupts were
-		 * generated by hw for the Nth time of running this
-		 * watchdog timer. This usually means a serious hw
-		 * error. Now it is time to kill all instances and
-		 * reset the MFC. */
-		mfc_err("Time out during waiting for HW\n");
-		schedule_work(&dev->watchdog_work);
-	}
-	dev->watchdog_timer.expires = jiffies +
-					msecs_to_jiffies(MFC_WATCHDOG_INTERVAL);
-	add_timer(&dev->watchdog_timer);
-}
-
-static void s5p_mfc_watchdog_worker(struct work_struct *work)
-{
-	struct s5p_mfc_dev *dev;
-	struct s5p_mfc_ctx *ctx;
-	unsigned long flags;
-	int mutex_locked;
-	int i, ret;
-
-	dev = container_of(work, struct s5p_mfc_dev, watchdog_work);
-
-	mfc_err("Driver timeout error handling\n");
-	/* Lock the mutex that protects open and release.
-	 * This is necessary as they may load and unload firmware. */
-	mutex_locked = mutex_trylock(&dev->mfc_mutex);
-	if (!mutex_locked)
-		mfc_err("Error: some instance may be closing/opening\n");
-	spin_lock_irqsave(&dev->irqlock, flags);
-
-	s5p_mfc_clock_off();
-
-	for (i = 0; i < MFC_NUM_CONTEXTS; i++) {
-		ctx = dev->ctx[i];
-		if (!ctx)
-			continue;
-		ctx->state = MFCINST_ERROR;
-		s5p_mfc_cleanup_queue(&ctx->dst_queue, &ctx->vq_dst);
-		s5p_mfc_cleanup_queue(&ctx->src_queue, &ctx->vq_src);
-		clear_work_bit(ctx);
-		wake_up_ctx(ctx, S5P_MFC_R2H_CMD_ERR_RET, 0);
-	}
-	clear_bit(0, &dev->hw_lock);
-	spin_unlock_irqrestore(&dev->irqlock, flags);
-
-	/* De-init MFC */
-	s5p_mfc_deinit_hw(dev);
-
-	/* Double check if there is at least one instance running.
-	 * If no instance is in memory than no firmware should be present */
-	if (dev->num_inst > 0) {
-		ret = s5p_mfc_load_firmware(dev);
-		if (ret) {
-			mfc_err("Failed to reload FW\n");
-			goto unlock;
-		}
-		s5p_mfc_clock_on();
-		ret = s5p_mfc_init_hw(dev);
-		s5p_mfc_clock_off();
-		if (ret)
-			mfc_err("Failed to reinit FW\n");
-	}
-unlock:
-	if (mutex_locked)
-		mutex_unlock(&dev->mfc_mutex);
-}
-
-static void s5p_mfc_handle_frame_all_extracted(struct s5p_mfc_ctx *ctx)
-{
-	struct s5p_mfc_buf *dst_buf;
-	struct s5p_mfc_dev *dev = ctx->dev;
-
-	ctx->state = MFCINST_FINISHED;
-	ctx->sequence++;
-	while (!list_empty(&ctx->dst_queue)) {
-		dst_buf = list_entry(ctx->dst_queue.next,
-				     struct s5p_mfc_buf, list);
-		mfc_debug(2, "Cleaning up buffer: %d\n",
-					  dst_buf->b->vb2_buf.index);
-		vb2_set_plane_payload(&dst_buf->b->vb2_buf, 0, 0);
-		vb2_set_plane_payload(&dst_buf->b->vb2_buf, 1, 0);
-		list_del(&dst_buf->list);
-		dst_buf->flags |= MFC_BUF_FLAG_EOS;
-		ctx->dst_queue_cnt--;
-		dst_buf->b->sequence = (ctx->sequence++);
-
-		if (s5p_mfc_hw_call(dev->mfc_ops, get_pic_type_top, ctx) ==
-			s5p_mfc_hw_call(dev->mfc_ops, get_pic_type_bot, ctx))
-			dst_buf->b->field = V4L2_FIELD_NONE;
-		else
-			dst_buf->b->field = V4L2_FIELD_INTERLACED;
-		dst_buf->b->flags |= V4L2_BUF_FLAG_LAST;
-
-		ctx->dec_dst_flag &= ~(1 << dst_buf->b->vb2_buf.index);
-		vb2_buffer_done(&dst_buf->b->vb2_buf, VB2_BUF_STATE_DONE);
-	}
-}
-
-static void s5p_mfc_handle_frame_copy_time(struct s5p_mfc_ctx *ctx)
-{
-	struct s5p_mfc_dev *dev = ctx->dev;
-	struct s5p_mfc_buf *dst_buf, *src_buf;
-	u32 dec_y_addr;
-	unsigned int frame_type;
-
-	/* Make sure we actually have a new frame before continuing. */
-	frame_type = s5p_mfc_hw_call(dev->mfc_ops, get_dec_frame_type, dev);
-	if (frame_type == S5P_FIMV_DECODE_FRAME_SKIPPED)
-		return;
-	dec_y_addr = (u32)s5p_mfc_hw_call(dev->mfc_ops, get_dec_y_adr, dev);
-
-	/* Copy timestamp / timecode from decoded src to dst and set
-	   appropriate flags. */
-	src_buf = list_entry(ctx->src_queue.next, struct s5p_mfc_buf, list);
-	list_for_each_entry(dst_buf, &ctx->dst_queue, list) {
-		u32 addr = (u32)vb2_dma_contig_plane_dma_addr(&dst_buf->b->vb2_buf, 0);
-
-		if (addr == dec_y_addr) {
-			dst_buf->b->timecode = src_buf->b->timecode;
-			dst_buf->b->vb2_buf.timestamp =
-						src_buf->b->vb2_buf.timestamp;
-			dst_buf->b->flags &=
-				~V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
-			dst_buf->b->flags |=
-				src_buf->b->flags
-				& V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
-			switch (frame_type) {
-			case S5P_FIMV_DECODE_FRAME_I_FRAME:
-				dst_buf->b->flags |=
-						V4L2_BUF_FLAG_KEYFRAME;
-				break;
-			case S5P_FIMV_DECODE_FRAME_P_FRAME:
-				dst_buf->b->flags |=
-						V4L2_BUF_FLAG_PFRAME;
-				break;
-			case S5P_FIMV_DECODE_FRAME_B_FRAME:
-				dst_buf->b->flags |=
-						V4L2_BUF_FLAG_BFRAME;
-				break;
-			default:
-				/* Don't know how to handle
-				   S5P_FIMV_DECODE_FRAME_OTHER_FRAME. */
-				mfc_debug(2, "Unexpected frame type: %d\n",
-						frame_type);
-			}
-			break;
-		}
-	}
-}
-
-static void s5p_mfc_handle_frame_new(struct s5p_mfc_ctx *ctx, unsigned int err)
-{
-	struct s5p_mfc_dev *dev = ctx->dev;
-	struct s5p_mfc_buf  *dst_buf;
-	u32 dspl_y_addr;
-	unsigned int frame_type;
-
-	dspl_y_addr = (u32)s5p_mfc_hw_call(dev->mfc_ops, get_dspl_y_adr, dev);
-	if (IS_MFCV6_PLUS(dev))
-		frame_type = s5p_mfc_hw_call(dev->mfc_ops,
-			get_disp_frame_type, ctx);
-	else
-		frame_type = s5p_mfc_hw_call(dev->mfc_ops,
-			get_dec_frame_type, dev);
-
-	/* If frame is same as previous then skip and do not dequeue */
-	if (frame_type == S5P_FIMV_DECODE_FRAME_SKIPPED) {
-		if (!ctx->after_packed_pb)
-			ctx->sequence++;
-		ctx->after_packed_pb = 0;
-		return;
-	}
-	ctx->sequence++;
-	/* The MFC returns address of the buffer, now we have to
-	 * check which videobuf does it correspond to */
-	list_for_each_entry(dst_buf, &ctx->dst_queue, list) {
-		u32 addr = (u32)vb2_dma_contig_plane_dma_addr(&dst_buf->b->vb2_buf, 0);
-
-		/* Check if this is the buffer we're looking for */
-		if (addr == dspl_y_addr) {
-			list_del(&dst_buf->list);
-			ctx->dst_queue_cnt--;
-			dst_buf->b->sequence = ctx->sequence;
-			if (s5p_mfc_hw_call(dev->mfc_ops,
-					get_pic_type_top, ctx) ==
-				s5p_mfc_hw_call(dev->mfc_ops,
-					get_pic_type_bot, ctx))
-				dst_buf->b->field = V4L2_FIELD_NONE;
-			else
-				dst_buf->b->field =
-							V4L2_FIELD_INTERLACED;
-			vb2_set_plane_payload(&dst_buf->b->vb2_buf, 0,
-						ctx->luma_size);
-			vb2_set_plane_payload(&dst_buf->b->vb2_buf, 1,
-						ctx->chroma_size);
-			clear_bit(dst_buf->b->vb2_buf.index,
-							&ctx->dec_dst_flag);
-
-			vb2_buffer_done(&dst_buf->b->vb2_buf, err ?
-				VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE);
-
-			break;
-		}
-	}
-}
-
-/* Handle frame decoding interrupt */
-static void s5p_mfc_handle_frame(struct s5p_mfc_ctx *ctx,
-					unsigned int reason, unsigned int err)
-{
-	struct s5p_mfc_dev *dev = ctx->dev;
-	unsigned int dst_frame_status;
-	unsigned int dec_frame_status;
-	struct s5p_mfc_buf *src_buf;
-	unsigned int res_change;
-
-	dst_frame_status = s5p_mfc_hw_call(dev->mfc_ops, get_dspl_status, dev)
-				& S5P_FIMV_DEC_STATUS_DECODING_STATUS_MASK;
-	dec_frame_status = s5p_mfc_hw_call(dev->mfc_ops, get_dec_status, dev)
-				& S5P_FIMV_DEC_STATUS_DECODING_STATUS_MASK;
-	res_change = (s5p_mfc_hw_call(dev->mfc_ops, get_dspl_status, dev)
-				& S5P_FIMV_DEC_STATUS_RESOLUTION_MASK)
-				>> S5P_FIMV_DEC_STATUS_RESOLUTION_SHIFT;
-	mfc_debug(2, "Frame Status: %x\n", dst_frame_status);
-	if (ctx->state == MFCINST_RES_CHANGE_INIT)
-		ctx->state = MFCINST_RES_CHANGE_FLUSH;
-	if (res_change == S5P_FIMV_RES_INCREASE ||
-		res_change == S5P_FIMV_RES_DECREASE) {
-		ctx->state = MFCINST_RES_CHANGE_INIT;
-		s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
-		wake_up_ctx(ctx, reason, err);
-		WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0);
-		s5p_mfc_clock_off();
-		s5p_mfc_hw_call(dev->mfc_ops, try_run, dev);
-		return;
-	}
-	if (ctx->dpb_flush_flag)
-		ctx->dpb_flush_flag = 0;
-
-	/* All frames remaining in the buffer have been extracted  */
-	if (dst_frame_status == S5P_FIMV_DEC_STATUS_DECODING_EMPTY) {
-		if (ctx->state == MFCINST_RES_CHANGE_FLUSH) {
-			static const struct v4l2_event ev_src_ch = {
-				.type = V4L2_EVENT_SOURCE_CHANGE,
-				.u.src_change.changes =
-					V4L2_EVENT_SRC_CH_RESOLUTION,
-			};
-
-			s5p_mfc_handle_frame_all_extracted(ctx);
-			ctx->state = MFCINST_RES_CHANGE_END;
-			v4l2_event_queue_fh(&ctx->fh, &ev_src_ch);
-
-			goto leave_handle_frame;
-		} else {
-			s5p_mfc_handle_frame_all_extracted(ctx);
-		}
-	}
-
-	if (dec_frame_status == S5P_FIMV_DEC_STATUS_DECODING_DISPLAY)
-		s5p_mfc_handle_frame_copy_time(ctx);
-
-	/* A frame has been decoded and is in the buffer  */
-	if (dst_frame_status == S5P_FIMV_DEC_STATUS_DISPLAY_ONLY ||
-	    dst_frame_status == S5P_FIMV_DEC_STATUS_DECODING_DISPLAY) {
-		s5p_mfc_handle_frame_new(ctx, err);
-	} else {
-		mfc_debug(2, "No frame decode\n");
-	}
-	/* Mark source buffer as complete */
-	if (dst_frame_status != S5P_FIMV_DEC_STATUS_DISPLAY_ONLY
-		&& !list_empty(&ctx->src_queue)) {
-		src_buf = list_entry(ctx->src_queue.next, struct s5p_mfc_buf,
-								list);
-		ctx->consumed_stream += s5p_mfc_hw_call(dev->mfc_ops,
-						get_consumed_stream, dev);
-		if (ctx->codec_mode != S5P_MFC_CODEC_H264_DEC &&
-			ctx->codec_mode != S5P_MFC_CODEC_VP8_DEC &&
-			ctx->consumed_stream + STUFF_BYTE <
-			src_buf->b->vb2_buf.planes[0].bytesused) {
-			/* Run MFC again on the same buffer */
-			mfc_debug(2, "Running again the same buffer\n");
-			ctx->after_packed_pb = 1;
-		} else {
-			mfc_debug(2, "MFC needs next buffer\n");
-			ctx->consumed_stream = 0;
-			if (src_buf->flags & MFC_BUF_FLAG_EOS)
-				ctx->state = MFCINST_FINISHING;
-			list_del(&src_buf->list);
-			ctx->src_queue_cnt--;
-			if (s5p_mfc_hw_call(dev->mfc_ops, err_dec, err) > 0)
-				vb2_buffer_done(&src_buf->b->vb2_buf,
-						VB2_BUF_STATE_ERROR);
-			else
-				vb2_buffer_done(&src_buf->b->vb2_buf,
-						VB2_BUF_STATE_DONE);
-		}
-	}
-leave_handle_frame:
-	if ((ctx->src_queue_cnt == 0 && ctx->state != MFCINST_FINISHING)
-				    || ctx->dst_queue_cnt < ctx->pb_count)
-		clear_work_bit(ctx);
-	s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
-	wake_up_ctx(ctx, reason, err);
-	WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0);
-	s5p_mfc_clock_off();
-	/* if suspending, wake up device and do not try_run again*/
-	if (test_bit(0, &dev->enter_suspend))
-		wake_up_dev(dev, reason, err);
-	else
-		s5p_mfc_hw_call(dev->mfc_ops, try_run, dev);
-}
-
-/* Error handling for interrupt */
-static void s5p_mfc_handle_error(struct s5p_mfc_dev *dev,
-		struct s5p_mfc_ctx *ctx, unsigned int reason, unsigned int err)
-{
-	mfc_err("Interrupt Error: %08x\n", err);
-
-	if (ctx) {
-		/* Error recovery is dependent on the state of context */
-		switch (ctx->state) {
-		case MFCINST_RES_CHANGE_INIT:
-		case MFCINST_RES_CHANGE_FLUSH:
-		case MFCINST_RES_CHANGE_END:
-		case MFCINST_FINISHING:
-		case MFCINST_FINISHED:
-		case MFCINST_RUNNING:
-			/* It is highly probable that an error occurred
-			 * while decoding a frame */
-			clear_work_bit(ctx);
-			ctx->state = MFCINST_ERROR;
-			/* Mark all dst buffers as having an error */
-			s5p_mfc_cleanup_queue(&ctx->dst_queue, &ctx->vq_dst);
-			/* Mark all src buffers as having an error */
-			s5p_mfc_cleanup_queue(&ctx->src_queue, &ctx->vq_src);
-			wake_up_ctx(ctx, reason, err);
-			break;
-		default:
-			clear_work_bit(ctx);
-			ctx->state = MFCINST_ERROR;
-			wake_up_ctx(ctx, reason, err);
-			break;
-		}
-	}
-	WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0);
-	s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
-	s5p_mfc_clock_off();
-	wake_up_dev(dev, reason, err);
-}
-
-/* Header parsing interrupt handling */
-static void s5p_mfc_handle_seq_done(struct s5p_mfc_ctx *ctx,
-				 unsigned int reason, unsigned int err)
-{
-	struct s5p_mfc_dev *dev;
-
-	if (!ctx)
-		return;
-	dev = ctx->dev;
-	if (ctx->c_ops->post_seq_start) {
-		if (ctx->c_ops->post_seq_start(ctx))
-			mfc_err("post_seq_start() failed\n");
-	} else {
-		ctx->img_width = s5p_mfc_hw_call(dev->mfc_ops, get_img_width,
-				dev);
-		ctx->img_height = s5p_mfc_hw_call(dev->mfc_ops, get_img_height,
-				dev);
-
-		s5p_mfc_hw_call(dev->mfc_ops, dec_calc_dpb_size, ctx);
-
-		ctx->pb_count = s5p_mfc_hw_call(dev->mfc_ops, get_dpb_count,
-				dev);
-		ctx->mv_count = s5p_mfc_hw_call(dev->mfc_ops, get_mv_count,
-				dev);
-		if (FW_HAS_E_MIN_SCRATCH_BUF(dev))
-			ctx->scratch_buf_size = s5p_mfc_hw_call(dev->mfc_ops,
-						get_min_scratch_buf_size, dev);
-		if (ctx->img_width == 0 || ctx->img_height == 0)
-			ctx->state = MFCINST_ERROR;
-		else
-			ctx->state = MFCINST_HEAD_PARSED;
-
-		if ((ctx->codec_mode == S5P_MFC_CODEC_H264_DEC ||
-			ctx->codec_mode == S5P_MFC_CODEC_H264_MVC_DEC) &&
-				!list_empty(&ctx->src_queue)) {
-			struct s5p_mfc_buf *src_buf;
-			src_buf = list_entry(ctx->src_queue.next,
-					struct s5p_mfc_buf, list);
-			if (s5p_mfc_hw_call(dev->mfc_ops, get_consumed_stream,
-						dev) <
-					src_buf->b->vb2_buf.planes[0].bytesused)
-				ctx->head_processed = 0;
-			else
-				ctx->head_processed = 1;
-		} else {
-			ctx->head_processed = 1;
-		}
-	}
-	s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
-	clear_work_bit(ctx);
-	WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0);
-	s5p_mfc_clock_off();
-	s5p_mfc_hw_call(dev->mfc_ops, try_run, dev);
-	wake_up_ctx(ctx, reason, err);
-}
-
-/* Header parsing interrupt handling */
-static void s5p_mfc_handle_init_buffers(struct s5p_mfc_ctx *ctx,
-				 unsigned int reason, unsigned int err)
-{
-	struct s5p_mfc_buf *src_buf;
-	struct s5p_mfc_dev *dev;
-
-	if (!ctx)
-		return;
-	dev = ctx->dev;
-	s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
-	ctx->int_type = reason;
-	ctx->int_err = err;
-	ctx->int_cond = 1;
-	clear_work_bit(ctx);
-	if (err == 0) {
-		ctx->state = MFCINST_RUNNING;
-		if (!ctx->dpb_flush_flag && ctx->head_processed) {
-			if (!list_empty(&ctx->src_queue)) {
-				src_buf = list_entry(ctx->src_queue.next,
-					     struct s5p_mfc_buf, list);
-				list_del(&src_buf->list);
-				ctx->src_queue_cnt--;
-				vb2_buffer_done(&src_buf->b->vb2_buf,
-						VB2_BUF_STATE_DONE);
-			}
-		} else {
-			ctx->dpb_flush_flag = 0;
-		}
-		WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0);
-
-		s5p_mfc_clock_off();
-
-		wake_up(&ctx->queue);
-		s5p_mfc_hw_call(dev->mfc_ops, try_run, dev);
-	} else {
-		WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0);
-
-		s5p_mfc_clock_off();
-
-		wake_up(&ctx->queue);
-	}
-}
-
-static void s5p_mfc_handle_stream_complete(struct s5p_mfc_ctx *ctx)
-{
-	struct s5p_mfc_dev *dev = ctx->dev;
-	struct s5p_mfc_buf *mb_entry;
-
-	mfc_debug(2, "Stream completed\n");
-
-	ctx->state = MFCINST_FINISHED;
-
-	if (!list_empty(&ctx->dst_queue)) {
-		mb_entry = list_entry(ctx->dst_queue.next, struct s5p_mfc_buf,
-									list);
-		list_del(&mb_entry->list);
-		ctx->dst_queue_cnt--;
-		vb2_set_plane_payload(&mb_entry->b->vb2_buf, 0, 0);
-		vb2_buffer_done(&mb_entry->b->vb2_buf, VB2_BUF_STATE_DONE);
-	}
-
-	clear_work_bit(ctx);
-
-	WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0);
-
-	s5p_mfc_clock_off();
-	wake_up(&ctx->queue);
-	s5p_mfc_hw_call(dev->mfc_ops, try_run, dev);
-}
-
-/* Interrupt processing */
-static irqreturn_t s5p_mfc_irq(int irq, void *priv)
-{
-	struct s5p_mfc_dev *dev = priv;
-	struct s5p_mfc_ctx *ctx;
-	unsigned int reason;
-	unsigned int err;
-
-	mfc_debug_enter();
-	/* Reset the timeout watchdog */
-	atomic_set(&dev->watchdog_cnt, 0);
-	spin_lock(&dev->irqlock);
-	ctx = dev->ctx[dev->curr_ctx];
-	/* Get the reason of interrupt and the error code */
-	reason = s5p_mfc_hw_call(dev->mfc_ops, get_int_reason, dev);
-	err = s5p_mfc_hw_call(dev->mfc_ops, get_int_err, dev);
-	mfc_debug(1, "Int reason: %d (err: %08x)\n", reason, err);
-	switch (reason) {
-	case S5P_MFC_R2H_CMD_ERR_RET:
-		/* An error has occurred */
-		if (ctx->state == MFCINST_RUNNING &&
-			(s5p_mfc_hw_call(dev->mfc_ops, err_dec, err) >=
-				dev->warn_start ||
-				err == S5P_FIMV_ERR_NO_VALID_SEQ_HDR ||
-				err == S5P_FIMV_ERR_INCOMPLETE_FRAME ||
-				err == S5P_FIMV_ERR_TIMEOUT))
-			s5p_mfc_handle_frame(ctx, reason, err);
-		else
-			s5p_mfc_handle_error(dev, ctx, reason, err);
-		clear_bit(0, &dev->enter_suspend);
-		break;
-
-	case S5P_MFC_R2H_CMD_SLICE_DONE_RET:
-	case S5P_MFC_R2H_CMD_FIELD_DONE_RET:
-	case S5P_MFC_R2H_CMD_FRAME_DONE_RET:
-		if (ctx->c_ops->post_frame_start) {
-			if (ctx->c_ops->post_frame_start(ctx))
-				mfc_err("post_frame_start() failed\n");
-
-			if (ctx->state == MFCINST_FINISHING &&
-						list_empty(&ctx->ref_queue)) {
-				s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
-				s5p_mfc_handle_stream_complete(ctx);
-				break;
-			}
-			s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
-			WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0);
-			s5p_mfc_clock_off();
-			wake_up_ctx(ctx, reason, err);
-			s5p_mfc_hw_call(dev->mfc_ops, try_run, dev);
-		} else {
-			s5p_mfc_handle_frame(ctx, reason, err);
-		}
-		break;
-
-	case S5P_MFC_R2H_CMD_SEQ_DONE_RET:
-		s5p_mfc_handle_seq_done(ctx, reason, err);
-		break;
-
-	case S5P_MFC_R2H_CMD_OPEN_INSTANCE_RET:
-		ctx->inst_no = s5p_mfc_hw_call(dev->mfc_ops, get_inst_no, dev);
-		ctx->state = MFCINST_GOT_INST;
-		goto irq_cleanup_hw;
-
-	case S5P_MFC_R2H_CMD_CLOSE_INSTANCE_RET:
-		ctx->inst_no = MFC_NO_INSTANCE_SET;
-		ctx->state = MFCINST_FREE;
-		goto irq_cleanup_hw;
-
-	case S5P_MFC_R2H_CMD_SYS_INIT_RET:
-	case S5P_MFC_R2H_CMD_FW_STATUS_RET:
-	case S5P_MFC_R2H_CMD_SLEEP_RET:
-	case S5P_MFC_R2H_CMD_WAKEUP_RET:
-		if (ctx)
-			clear_work_bit(ctx);
-		s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
-		clear_bit(0, &dev->hw_lock);
-		clear_bit(0, &dev->enter_suspend);
-		wake_up_dev(dev, reason, err);
-		break;
-
-	case S5P_MFC_R2H_CMD_INIT_BUFFERS_RET:
-		s5p_mfc_handle_init_buffers(ctx, reason, err);
-		break;
-
-	case S5P_MFC_R2H_CMD_COMPLETE_SEQ_RET:
-		s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
-		ctx->int_type = reason;
-		ctx->int_err = err;
-		s5p_mfc_handle_stream_complete(ctx);
-		break;
-
-	case S5P_MFC_R2H_CMD_DPB_FLUSH_RET:
-		ctx->state = MFCINST_RUNNING;
-		goto irq_cleanup_hw;
-
-	default:
-		mfc_debug(2, "Unknown int reason\n");
-		s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
-	}
-	spin_unlock(&dev->irqlock);
-	mfc_debug_leave();
-	return IRQ_HANDLED;
-irq_cleanup_hw:
-	s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
-	ctx->int_type = reason;
-	ctx->int_err = err;
-	ctx->int_cond = 1;
-	if (test_and_clear_bit(0, &dev->hw_lock) == 0)
-		mfc_err("Failed to unlock hw\n");
-
-	s5p_mfc_clock_off();
-	clear_work_bit(ctx);
-	wake_up(&ctx->queue);
-
-	s5p_mfc_hw_call(dev->mfc_ops, try_run, dev);
-	spin_unlock(&dev->irqlock);
-	mfc_debug(2, "Exit via irq_cleanup_hw\n");
-	return IRQ_HANDLED;
-}
-
-/* Open an MFC node */
-static int s5p_mfc_open(struct file *file)
-{
-	struct video_device *vdev = video_devdata(file);
-	struct s5p_mfc_dev *dev = video_drvdata(file);
-	struct s5p_mfc_ctx *ctx = NULL;
-	struct vb2_queue *q;
-	int ret = 0;
-
-	mfc_debug_enter();
-	if (mutex_lock_interruptible(&dev->mfc_mutex))
-		return -ERESTARTSYS;
-	dev->num_inst++;	/* It is guarded by mfc_mutex in vfd */
-	/* Allocate memory for context */
-	ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
-	if (!ctx) {
-		ret = -ENOMEM;
-		goto err_alloc;
-	}
-	init_waitqueue_head(&ctx->queue);
-	v4l2_fh_init(&ctx->fh, vdev);
-	file->private_data = &ctx->fh;
-	v4l2_fh_add(&ctx->fh);
-	ctx->dev = dev;
-	INIT_LIST_HEAD(&ctx->src_queue);
-	INIT_LIST_HEAD(&ctx->dst_queue);
-	ctx->src_queue_cnt = 0;
-	ctx->dst_queue_cnt = 0;
-	/* Get context number */
-	ctx->num = 0;
-	while (dev->ctx[ctx->num]) {
-		ctx->num++;
-		if (ctx->num >= MFC_NUM_CONTEXTS) {
-			mfc_debug(2, "Too many open contexts\n");
-			ret = -EBUSY;
-			goto err_no_ctx;
-		}
-	}
-	/* Mark context as idle */
-	clear_work_bit_irqsave(ctx);
-	dev->ctx[ctx->num] = ctx;
-	if (vdev == dev->vfd_dec) {
-		ctx->type = MFCINST_DECODER;
-		ctx->c_ops = get_dec_codec_ops();
-		s5p_mfc_dec_init(ctx);
-		/* Setup ctrl handler */
-		ret = s5p_mfc_dec_ctrls_setup(ctx);
-		if (ret) {
-			mfc_err("Failed to setup mfc controls\n");
-			goto err_ctrls_setup;
-		}
-	} else if (vdev == dev->vfd_enc) {
-		ctx->type = MFCINST_ENCODER;
-		ctx->c_ops = get_enc_codec_ops();
-		/* only for encoder */
-		INIT_LIST_HEAD(&ctx->ref_queue);
-		ctx->ref_queue_cnt = 0;
-		s5p_mfc_enc_init(ctx);
-		/* Setup ctrl handler */
-		ret = s5p_mfc_enc_ctrls_setup(ctx);
-		if (ret) {
-			mfc_err("Failed to setup mfc controls\n");
-			goto err_ctrls_setup;
-		}
-	} else {
-		ret = -ENOENT;
-		goto err_bad_node;
-	}
-	ctx->fh.ctrl_handler = &ctx->ctrl_handler;
-	ctx->inst_no = MFC_NO_INSTANCE_SET;
-	/* Load firmware if this is the first instance */
-	if (dev->num_inst == 1) {
-		dev->watchdog_timer.expires = jiffies +
-					msecs_to_jiffies(MFC_WATCHDOG_INTERVAL);
-		add_timer(&dev->watchdog_timer);
-		ret = s5p_mfc_power_on();
-		if (ret < 0) {
-			mfc_err("power on failed\n");
-			goto err_pwr_enable;
-		}
-		s5p_mfc_clock_on();
-		ret = s5p_mfc_load_firmware(dev);
-		if (ret) {
-			s5p_mfc_clock_off();
-			goto err_load_fw;
-		}
-		/* Init the FW */
-		ret = s5p_mfc_init_hw(dev);
-		s5p_mfc_clock_off();
-		if (ret)
-			goto err_init_hw;
-	}
-	/* Init videobuf2 queue for CAPTURE */
-	q = &ctx->vq_dst;
-	q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
-	q->drv_priv = &ctx->fh;
-	q->lock = &dev->mfc_mutex;
-	if (vdev == dev->vfd_dec) {
-		q->io_modes = VB2_MMAP;
-		q->ops = get_dec_queue_ops();
-	} else if (vdev == dev->vfd_enc) {
-		q->io_modes = VB2_MMAP | VB2_USERPTR;
-		q->ops = get_enc_queue_ops();
-	} else {
-		ret = -ENOENT;
-		goto err_queue_init;
-	}
-	/*
-	 * We'll do mostly sequential access, so sacrifice TLB efficiency for
-	 * faster allocation.
-	 */
-	q->dma_attrs = DMA_ATTR_ALLOC_SINGLE_PAGES;
-	q->mem_ops = &vb2_dma_contig_memops;
-	q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
-	ret = vb2_queue_init(q);
-	if (ret) {
-		mfc_err("Failed to initialize videobuf2 queue(capture)\n");
-		goto err_queue_init;
-	}
-	/* Init videobuf2 queue for OUTPUT */
-	q = &ctx->vq_src;
-	q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
-	q->drv_priv = &ctx->fh;
-	q->lock = &dev->mfc_mutex;
-	if (vdev == dev->vfd_dec) {
-		q->io_modes = VB2_MMAP;
-		q->ops = get_dec_queue_ops();
-	} else if (vdev == dev->vfd_enc) {
-		q->io_modes = VB2_MMAP | VB2_USERPTR;
-		q->ops = get_enc_queue_ops();
-	} else {
-		ret = -ENOENT;
-		goto err_queue_init;
-	}
-	/* One way to indicate end-of-stream for MFC is to set the
-	 * bytesused == 0. However by default videobuf2 handles bytesused
-	 * equal to 0 as a special case and changes its value to the size
-	 * of the buffer. Set the allow_zero_bytesused flag so that videobuf2
-	 * will keep the value of bytesused intact.
-	 */
-	q->allow_zero_bytesused = 1;
-
-	/*
-	 * We'll do mostly sequential access, so sacrifice TLB efficiency for
-	 * faster allocation.
-	 */
-	q->dma_attrs = DMA_ATTR_ALLOC_SINGLE_PAGES;
-	q->mem_ops = &vb2_dma_contig_memops;
-	q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
-	ret = vb2_queue_init(q);
-	if (ret) {
-		mfc_err("Failed to initialize videobuf2 queue(output)\n");
-		goto err_queue_init;
-	}
-	mutex_unlock(&dev->mfc_mutex);
-	mfc_debug_leave();
-	return ret;
-	/* Deinit when failure occurred */
-err_queue_init:
-	if (dev->num_inst == 1)
-		s5p_mfc_deinit_hw(dev);
-err_init_hw:
-err_load_fw:
-err_pwr_enable:
-	if (dev->num_inst == 1) {
-		if (s5p_mfc_power_off() < 0)
-			mfc_err("power off failed\n");
-		del_timer_sync(&dev->watchdog_timer);
-	}
-err_ctrls_setup:
-	s5p_mfc_dec_ctrls_delete(ctx);
-err_bad_node:
-	dev->ctx[ctx->num] = NULL;
-err_no_ctx:
-	v4l2_fh_del(&ctx->fh);
-	v4l2_fh_exit(&ctx->fh);
-	kfree(ctx);
-err_alloc:
-	dev->num_inst--;
-	mutex_unlock(&dev->mfc_mutex);
-	mfc_debug_leave();
-	return ret;
-}
-
-/* Release MFC context */
-static int s5p_mfc_release(struct file *file)
-{
-	struct s5p_mfc_ctx *ctx = fh_to_ctx(file->private_data);
-	struct s5p_mfc_dev *dev = ctx->dev;
-
-	/* if dev is null, do cleanup that doesn't need dev */
-	mfc_debug_enter();
-	if (dev)
-		mutex_lock(&dev->mfc_mutex);
-	vb2_queue_release(&ctx->vq_src);
-	vb2_queue_release(&ctx->vq_dst);
-	if (dev) {
-		s5p_mfc_clock_on();
-
-		/* Mark context as idle */
-		clear_work_bit_irqsave(ctx);
-		/*
-		 * If instance was initialised and not yet freed,
-		 * return instance and free resources
-		*/
-		if (ctx->state != MFCINST_FREE && ctx->state != MFCINST_INIT) {
-			mfc_debug(2, "Has to free instance\n");
-			s5p_mfc_close_mfc_inst(dev, ctx);
-		}
-		/* hardware locking scheme */
-		if (dev->curr_ctx == ctx->num)
-			clear_bit(0, &dev->hw_lock);
-		dev->num_inst--;
-		if (dev->num_inst == 0) {
-			mfc_debug(2, "Last instance\n");
-			s5p_mfc_deinit_hw(dev);
-			del_timer_sync(&dev->watchdog_timer);
-			s5p_mfc_clock_off();
-			if (s5p_mfc_power_off() < 0)
-				mfc_err("Power off failed\n");
-		} else {
-			mfc_debug(2, "Shutting down clock\n");
-			s5p_mfc_clock_off();
-		}
-	}
-	if (dev)
-		dev->ctx[ctx->num] = NULL;
-	s5p_mfc_dec_ctrls_delete(ctx);
-	v4l2_fh_del(&ctx->fh);
-	/* vdev is gone if dev is null */
-	if (dev)
-		v4l2_fh_exit(&ctx->fh);
-	kfree(ctx);
-	mfc_debug_leave();
-	if (dev)
-		mutex_unlock(&dev->mfc_mutex);
-
-	return 0;
-}
-
-/* Poll */
-static __poll_t s5p_mfc_poll(struct file *file,
-				 struct poll_table_struct *wait)
-{
-	struct s5p_mfc_ctx *ctx = fh_to_ctx(file->private_data);
-	struct s5p_mfc_dev *dev = ctx->dev;
-	struct vb2_queue *src_q, *dst_q;
-	struct vb2_buffer *src_vb = NULL, *dst_vb = NULL;
-	__poll_t rc = 0;
-	unsigned long flags;
-
-	mutex_lock(&dev->mfc_mutex);
-	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 ((!src_q->streaming || list_empty(&src_q->queued_list))
-		&& (!dst_q->streaming || list_empty(&dst_q->queued_list))) {
-		rc = EPOLLERR;
-		goto end;
-	}
-	mutex_unlock(&dev->mfc_mutex);
-	poll_wait(file, &ctx->fh.wait, wait);
-	poll_wait(file, &src_q->done_wq, wait);
-	poll_wait(file, &dst_q->done_wq, wait);
-	mutex_lock(&dev->mfc_mutex);
-	if (v4l2_event_pending(&ctx->fh))
-		rc |= EPOLLPRI;
-	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 |= EPOLLOUT | EPOLLWRNORM;
-	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 |= EPOLLIN | EPOLLRDNORM;
-	spin_unlock_irqrestore(&dst_q->done_lock, flags);
-end:
-	mutex_unlock(&dev->mfc_mutex);
-	return rc;
-}
-
-/* Mmap */
-static int s5p_mfc_mmap(struct file *file, struct vm_area_struct *vma)
-{
-	struct s5p_mfc_ctx *ctx = fh_to_ctx(file->private_data);
-	unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
-	int ret;
-
-	if (offset < DST_QUEUE_OFF_BASE) {
-		mfc_debug(2, "mmaping source\n");
-		ret = vb2_mmap(&ctx->vq_src, vma);
-	} else {		/* capture */
-		mfc_debug(2, "mmaping destination\n");
-		vma->vm_pgoff -= (DST_QUEUE_OFF_BASE >> PAGE_SHIFT);
-		ret = vb2_mmap(&ctx->vq_dst, vma);
-	}
-	return ret;
-}
-
-/* v4l2 ops */
-static const struct v4l2_file_operations s5p_mfc_fops = {
-	.owner = THIS_MODULE,
-	.open = s5p_mfc_open,
-	.release = s5p_mfc_release,
-	.poll = s5p_mfc_poll,
-	.unlocked_ioctl = video_ioctl2,
-	.mmap = s5p_mfc_mmap,
-};
-
-/* DMA memory related helper functions */
-static void s5p_mfc_memdev_release(struct device *dev)
-{
-	of_reserved_mem_device_release(dev);
-}
-
-static struct device *s5p_mfc_alloc_memdev(struct device *dev,
-					   const char *name, unsigned int idx)
-{
-	struct device *child;
-	int ret;
-
-	child = devm_kzalloc(dev, sizeof(*child), GFP_KERNEL);
-	if (!child)
-		return NULL;
-
-	device_initialize(child);
-	dev_set_name(child, "%s:%s", dev_name(dev), name);
-	child->parent = dev;
-	child->coherent_dma_mask = dev->coherent_dma_mask;
-	child->dma_mask = dev->dma_mask;
-	child->release = s5p_mfc_memdev_release;
-	child->dma_parms = devm_kzalloc(dev, sizeof(*child->dma_parms),
-					GFP_KERNEL);
-	if (!child->dma_parms)
-		goto err;
-
-	/*
-	 * The memdevs are not proper OF platform devices, so in order for them
-	 * to be treated as valid DMA masters we need a bit of a hack to force
-	 * them to inherit the MFC node's DMA configuration.
-	 */
-	of_dma_configure(child, dev->of_node, true);
-
-	if (device_add(child) == 0) {
-		ret = of_reserved_mem_device_init_by_idx(child, dev->of_node,
-							 idx);
-		if (ret == 0)
-			return child;
-		device_del(child);
-	}
-err:
-	put_device(child);
-	return NULL;
-}
-
-static int s5p_mfc_configure_2port_memory(struct s5p_mfc_dev *mfc_dev)
-{
-	struct device *dev = &mfc_dev->plat_dev->dev;
-	void *bank2_virt;
-	dma_addr_t bank2_dma_addr;
-	unsigned long align_size = 1 << MFC_BASE_ALIGN_ORDER;
-	int ret;
-
-	/*
-	 * Create and initialize virtual devices for accessing
-	 * reserved memory regions.
-	 */
-	mfc_dev->mem_dev[BANK_L_CTX] = s5p_mfc_alloc_memdev(dev, "left",
-							   BANK_L_CTX);
-	if (!mfc_dev->mem_dev[BANK_L_CTX])
-		return -ENODEV;
-	mfc_dev->mem_dev[BANK_R_CTX] = s5p_mfc_alloc_memdev(dev, "right",
-							   BANK_R_CTX);
-	if (!mfc_dev->mem_dev[BANK_R_CTX]) {
-		device_unregister(mfc_dev->mem_dev[BANK_L_CTX]);
-		return -ENODEV;
-	}
-
-	/* Allocate memory for firmware and initialize both banks addresses */
-	ret = s5p_mfc_alloc_firmware(mfc_dev);
-	if (ret) {
-		device_unregister(mfc_dev->mem_dev[BANK_R_CTX]);
-		device_unregister(mfc_dev->mem_dev[BANK_L_CTX]);
-		return ret;
-	}
-
-	mfc_dev->dma_base[BANK_L_CTX] = mfc_dev->fw_buf.dma;
-
-	bank2_virt = dma_alloc_coherent(mfc_dev->mem_dev[BANK_R_CTX],
-				       align_size, &bank2_dma_addr, GFP_KERNEL);
-	if (!bank2_virt) {
-		mfc_err("Allocating bank2 base failed\n");
-		s5p_mfc_release_firmware(mfc_dev);
-		device_unregister(mfc_dev->mem_dev[BANK_R_CTX]);
-		device_unregister(mfc_dev->mem_dev[BANK_L_CTX]);
-		return -ENOMEM;
-	}
-
-	/* Valid buffers passed to MFC encoder with LAST_FRAME command
-	 * should not have address of bank2 - MFC will treat it as a null frame.
-	 * To avoid such situation we set bank2 address below the pool address.
-	 */
-	mfc_dev->dma_base[BANK_R_CTX] = bank2_dma_addr - align_size;
-
-	dma_free_coherent(mfc_dev->mem_dev[BANK_R_CTX], align_size, bank2_virt,
-			  bank2_dma_addr);
-
-	vb2_dma_contig_set_max_seg_size(mfc_dev->mem_dev[BANK_L_CTX],
-					DMA_BIT_MASK(32));
-	vb2_dma_contig_set_max_seg_size(mfc_dev->mem_dev[BANK_R_CTX],
-					DMA_BIT_MASK(32));
-
-	return 0;
-}
-
-static void s5p_mfc_unconfigure_2port_memory(struct s5p_mfc_dev *mfc_dev)
-{
-	device_unregister(mfc_dev->mem_dev[BANK_L_CTX]);
-	device_unregister(mfc_dev->mem_dev[BANK_R_CTX]);
-	vb2_dma_contig_clear_max_seg_size(mfc_dev->mem_dev[BANK_L_CTX]);
-	vb2_dma_contig_clear_max_seg_size(mfc_dev->mem_dev[BANK_R_CTX]);
-}
-
-static int s5p_mfc_configure_common_memory(struct s5p_mfc_dev *mfc_dev)
-{
-	struct device *dev = &mfc_dev->plat_dev->dev;
-	unsigned long mem_size = SZ_4M;
-
-	if (IS_ENABLED(CONFIG_DMA_CMA) || exynos_is_iommu_available(dev))
-		mem_size = SZ_8M;
-
-	if (mfc_mem_size)
-		mem_size = memparse(mfc_mem_size, NULL);
-
-	mfc_dev->mem_bitmap = bitmap_zalloc(mem_size >> PAGE_SHIFT, GFP_KERNEL);
-	if (!mfc_dev->mem_bitmap)
-		return -ENOMEM;
-
-	mfc_dev->mem_virt = dma_alloc_coherent(dev, mem_size,
-					       &mfc_dev->mem_base, GFP_KERNEL);
-	if (!mfc_dev->mem_virt) {
-		bitmap_free(mfc_dev->mem_bitmap);
-		dev_err(dev, "failed to preallocate %ld MiB for the firmware and context buffers\n",
-			(mem_size / SZ_1M));
-		return -ENOMEM;
-	}
-	mfc_dev->mem_size = mem_size;
-	mfc_dev->dma_base[BANK_L_CTX] = mfc_dev->mem_base;
-	mfc_dev->dma_base[BANK_R_CTX] = mfc_dev->mem_base;
-
-	/*
-	 * MFC hardware cannot handle 0 as a base address, so mark first 128K
-	 * as used (to keep required base alignment) and adjust base address
-	 */
-	if (mfc_dev->mem_base == (dma_addr_t)0) {
-		unsigned int offset = 1 << MFC_BASE_ALIGN_ORDER;
-
-		bitmap_set(mfc_dev->mem_bitmap, 0, offset >> PAGE_SHIFT);
-		mfc_dev->dma_base[BANK_L_CTX] += offset;
-		mfc_dev->dma_base[BANK_R_CTX] += offset;
-	}
-
-	/* Firmware allocation cannot fail in this case */
-	s5p_mfc_alloc_firmware(mfc_dev);
-
-	mfc_dev->mem_dev[BANK_L_CTX] = mfc_dev->mem_dev[BANK_R_CTX] = dev;
-	vb2_dma_contig_set_max_seg_size(dev, DMA_BIT_MASK(32));
-
-	dev_info(dev, "preallocated %ld MiB buffer for the firmware and context buffers\n",
-		 (mem_size / SZ_1M));
-
-	return 0;
-}
-
-static void s5p_mfc_unconfigure_common_memory(struct s5p_mfc_dev *mfc_dev)
-{
-	struct device *dev = &mfc_dev->plat_dev->dev;
-
-	dma_free_coherent(dev, mfc_dev->mem_size, mfc_dev->mem_virt,
-			  mfc_dev->mem_base);
-	bitmap_free(mfc_dev->mem_bitmap);
-	vb2_dma_contig_clear_max_seg_size(dev);
-}
-
-static int s5p_mfc_configure_dma_memory(struct s5p_mfc_dev *mfc_dev)
-{
-	struct device *dev = &mfc_dev->plat_dev->dev;
-
-	if (exynos_is_iommu_available(dev) || !IS_TWOPORT(mfc_dev))
-		return s5p_mfc_configure_common_memory(mfc_dev);
-	else
-		return s5p_mfc_configure_2port_memory(mfc_dev);
-}
-
-static void s5p_mfc_unconfigure_dma_memory(struct s5p_mfc_dev *mfc_dev)
-{
-	struct device *dev = &mfc_dev->plat_dev->dev;
-
-	s5p_mfc_release_firmware(mfc_dev);
-	if (exynos_is_iommu_available(dev) || !IS_TWOPORT(mfc_dev))
-		s5p_mfc_unconfigure_common_memory(mfc_dev);
-	else
-		s5p_mfc_unconfigure_2port_memory(mfc_dev);
-}
-
-/* MFC probe function */
-static int s5p_mfc_probe(struct platform_device *pdev)
-{
-	struct s5p_mfc_dev *dev;
-	struct video_device *vfd;
-	int ret;
-
-	pr_debug("%s++\n", __func__);
-	dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
-	if (!dev)
-		return -ENOMEM;
-
-	spin_lock_init(&dev->irqlock);
-	spin_lock_init(&dev->condlock);
-	dev->plat_dev = pdev;
-	if (!dev->plat_dev) {
-		mfc_err("No platform data specified\n");
-		return -ENODEV;
-	}
-
-	dev->variant = of_device_get_match_data(&pdev->dev);
-	if (!dev->variant) {
-		dev_err(&pdev->dev, "Failed to get device MFC hardware variant information\n");
-		return -ENOENT;
-	}
-
-	dev->regs_base = devm_platform_ioremap_resource(pdev, 0);
-	if (IS_ERR(dev->regs_base))
-		return PTR_ERR(dev->regs_base);
-
-	ret = platform_get_irq(pdev, 0);
-	if (ret < 0)
-		return ret;
-	dev->irq = ret;
-	ret = devm_request_irq(&pdev->dev, dev->irq, s5p_mfc_irq,
-					0, pdev->name, dev);
-	if (ret) {
-		dev_err(&pdev->dev, "Failed to install irq (%d)\n", ret);
-		return ret;
-	}
-
-	ret = s5p_mfc_configure_dma_memory(dev);
-	if (ret < 0) {
-		dev_err(&pdev->dev, "failed to configure DMA memory\n");
-		return ret;
-	}
-
-	ret = s5p_mfc_init_pm(dev);
-	if (ret < 0) {
-		dev_err(&pdev->dev, "failed to get mfc clock source\n");
-		goto err_dma;
-	}
-
-	/*
-	 * Load fails if fs isn't mounted. Try loading anyway.
-	 * _open() will load it, it it fails now. Ignore failure.
-	 */
-	s5p_mfc_load_firmware(dev);
-
-	mutex_init(&dev->mfc_mutex);
-	init_waitqueue_head(&dev->queue);
-	dev->hw_lock = 0;
-	INIT_WORK(&dev->watchdog_work, s5p_mfc_watchdog_worker);
-	atomic_set(&dev->watchdog_cnt, 0);
-	timer_setup(&dev->watchdog_timer, s5p_mfc_watchdog, 0);
-
-	ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
-	if (ret)
-		goto err_v4l2_dev_reg;
-
-	/* decoder */
-	vfd = video_device_alloc();
-	if (!vfd) {
-		v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n");
-		ret = -ENOMEM;
-		goto err_dec_alloc;
-	}
-	vfd->fops	= &s5p_mfc_fops;
-	vfd->ioctl_ops	= get_dec_v4l2_ioctl_ops();
-	vfd->release	= video_device_release;
-	vfd->lock	= &dev->mfc_mutex;
-	vfd->v4l2_dev	= &dev->v4l2_dev;
-	vfd->vfl_dir	= VFL_DIR_M2M;
-	vfd->device_caps = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_STREAMING;
-	set_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags);
-	snprintf(vfd->name, sizeof(vfd->name), "%s", S5P_MFC_DEC_NAME);
-	dev->vfd_dec	= vfd;
-	video_set_drvdata(vfd, dev);
-
-	/* encoder */
-	vfd = video_device_alloc();
-	if (!vfd) {
-		v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n");
-		ret = -ENOMEM;
-		goto err_enc_alloc;
-	}
-	vfd->fops	= &s5p_mfc_fops;
-	vfd->ioctl_ops	= get_enc_v4l2_ioctl_ops();
-	vfd->release	= video_device_release;
-	vfd->lock	= &dev->mfc_mutex;
-	vfd->v4l2_dev	= &dev->v4l2_dev;
-	vfd->vfl_dir	= VFL_DIR_M2M;
-	vfd->device_caps = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_STREAMING;
-	snprintf(vfd->name, sizeof(vfd->name), "%s", S5P_MFC_ENC_NAME);
-	dev->vfd_enc	= vfd;
-	video_set_drvdata(vfd, dev);
-	platform_set_drvdata(pdev, dev);
-
-	/* Initialize HW ops and commands based on MFC version */
-	s5p_mfc_init_hw_ops(dev);
-	s5p_mfc_init_hw_cmds(dev);
-	s5p_mfc_init_regs(dev);
-
-	/* Register decoder and encoder */
-	ret = video_register_device(dev->vfd_dec, VFL_TYPE_VIDEO, 0);
-	if (ret) {
-		v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
-		goto err_dec_reg;
-	}
-	v4l2_info(&dev->v4l2_dev,
-		  "decoder registered as /dev/video%d\n", dev->vfd_dec->num);
-
-	ret = video_register_device(dev->vfd_enc, VFL_TYPE_VIDEO, 0);
-	if (ret) {
-		v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
-		goto err_enc_reg;
-	}
-	v4l2_info(&dev->v4l2_dev,
-		  "encoder registered as /dev/video%d\n", dev->vfd_enc->num);
-
-	pr_debug("%s--\n", __func__);
-	return 0;
-
-/* Deinit MFC if probe had failed */
-err_enc_reg:
-	video_unregister_device(dev->vfd_dec);
-err_dec_reg:
-	video_device_release(dev->vfd_enc);
-err_enc_alloc:
-	video_device_release(dev->vfd_dec);
-err_dec_alloc:
-	v4l2_device_unregister(&dev->v4l2_dev);
-err_v4l2_dev_reg:
-	s5p_mfc_final_pm(dev);
-err_dma:
-	s5p_mfc_unconfigure_dma_memory(dev);
-
-	pr_debug("%s-- with error\n", __func__);
-	return ret;
-
-}
-
-/* Remove the driver */
-static int s5p_mfc_remove(struct platform_device *pdev)
-{
-	struct s5p_mfc_dev *dev = platform_get_drvdata(pdev);
-	struct s5p_mfc_ctx *ctx;
-	int i;
-
-	v4l2_info(&dev->v4l2_dev, "Removing %s\n", pdev->name);
-
-	/*
-	 * Clear ctx dev pointer to avoid races between s5p_mfc_remove()
-	 * and s5p_mfc_release() and s5p_mfc_release() accessing ctx->dev
-	 * after s5p_mfc_remove() is run during unbind.
-	*/
-	mutex_lock(&dev->mfc_mutex);
-	for (i = 0; i < MFC_NUM_CONTEXTS; i++) {
-		ctx = dev->ctx[i];
-		if (!ctx)
-			continue;
-		/* clear ctx->dev */
-		ctx->dev = NULL;
-	}
-	mutex_unlock(&dev->mfc_mutex);
-
-	del_timer_sync(&dev->watchdog_timer);
-	flush_work(&dev->watchdog_work);
-
-	video_unregister_device(dev->vfd_enc);
-	video_unregister_device(dev->vfd_dec);
-	video_device_release(dev->vfd_enc);
-	video_device_release(dev->vfd_dec);
-	v4l2_device_unregister(&dev->v4l2_dev);
-	s5p_mfc_unconfigure_dma_memory(dev);
-
-	s5p_mfc_final_pm(dev);
-	return 0;
-}
-
-#ifdef CONFIG_PM_SLEEP
-
-static int s5p_mfc_suspend(struct device *dev)
-{
-	struct s5p_mfc_dev *m_dev = dev_get_drvdata(dev);
-	int ret;
-
-	if (m_dev->num_inst == 0)
-		return 0;
-
-	if (test_and_set_bit(0, &m_dev->enter_suspend) != 0) {
-		mfc_err("Error: going to suspend for a second time\n");
-		return -EIO;
-	}
-
-	/* Check if we're processing then wait if it necessary. */
-	while (test_and_set_bit(0, &m_dev->hw_lock) != 0) {
-		/* Try and lock the HW */
-		/* Wait on the interrupt waitqueue */
-		ret = wait_event_interruptible_timeout(m_dev->queue,
-			m_dev->int_cond, msecs_to_jiffies(MFC_INT_TIMEOUT));
-		if (ret == 0) {
-			mfc_err("Waiting for hardware to finish timed out\n");
-			clear_bit(0, &m_dev->enter_suspend);
-			return -EIO;
-		}
-	}
-
-	ret = s5p_mfc_sleep(m_dev);
-	if (ret) {
-		clear_bit(0, &m_dev->enter_suspend);
-		clear_bit(0, &m_dev->hw_lock);
-	}
-	return ret;
-}
-
-static int s5p_mfc_resume(struct device *dev)
-{
-	struct s5p_mfc_dev *m_dev = dev_get_drvdata(dev);
-
-	if (m_dev->num_inst == 0)
-		return 0;
-	return s5p_mfc_wakeup(m_dev);
-}
-#endif
-
-/* Power management */
-static const struct dev_pm_ops s5p_mfc_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(s5p_mfc_suspend, s5p_mfc_resume)
-};
-
-static struct s5p_mfc_buf_size_v5 mfc_buf_size_v5 = {
-	.h264_ctx	= MFC_H264_CTX_BUF_SIZE,
-	.non_h264_ctx	= MFC_CTX_BUF_SIZE,
-	.dsc		= DESC_BUF_SIZE,
-	.shm		= SHARED_BUF_SIZE,
-};
-
-static struct s5p_mfc_buf_size buf_size_v5 = {
-	.fw	= MAX_FW_SIZE,
-	.cpb	= MAX_CPB_SIZE,
-	.priv	= &mfc_buf_size_v5,
-};
-
-static struct s5p_mfc_variant mfc_drvdata_v5 = {
-	.version	= MFC_VERSION,
-	.version_bit	= MFC_V5_BIT,
-	.port_num	= MFC_NUM_PORTS,
-	.buf_size	= &buf_size_v5,
-	.fw_name[0]	= "s5p-mfc.fw",
-	.clk_names	= {"mfc", "sclk_mfc"},
-	.num_clocks	= 2,
-	.use_clock_gating = true,
-};
-
-static struct s5p_mfc_buf_size_v6 mfc_buf_size_v6 = {
-	.dev_ctx	= MFC_CTX_BUF_SIZE_V6,
-	.h264_dec_ctx	= MFC_H264_DEC_CTX_BUF_SIZE_V6,
-	.other_dec_ctx	= MFC_OTHER_DEC_CTX_BUF_SIZE_V6,
-	.h264_enc_ctx	= MFC_H264_ENC_CTX_BUF_SIZE_V6,
-	.other_enc_ctx	= MFC_OTHER_ENC_CTX_BUF_SIZE_V6,
-};
-
-static struct s5p_mfc_buf_size buf_size_v6 = {
-	.fw	= MAX_FW_SIZE_V6,
-	.cpb	= MAX_CPB_SIZE_V6,
-	.priv	= &mfc_buf_size_v6,
-};
-
-static struct s5p_mfc_variant mfc_drvdata_v6 = {
-	.version	= MFC_VERSION_V6,
-	.version_bit	= MFC_V6_BIT,
-	.port_num	= MFC_NUM_PORTS_V6,
-	.buf_size	= &buf_size_v6,
-	.fw_name[0]     = "s5p-mfc-v6.fw",
-	/*
-	 * v6-v2 firmware contains bug fixes and interface change
-	 * for init buffer command
-	 */
-	.fw_name[1]     = "s5p-mfc-v6-v2.fw",
-	.clk_names	= {"mfc"},
-	.num_clocks	= 1,
-};
-
-static struct s5p_mfc_buf_size_v6 mfc_buf_size_v7 = {
-	.dev_ctx	= MFC_CTX_BUF_SIZE_V7,
-	.h264_dec_ctx	= MFC_H264_DEC_CTX_BUF_SIZE_V7,
-	.other_dec_ctx	= MFC_OTHER_DEC_CTX_BUF_SIZE_V7,
-	.h264_enc_ctx	= MFC_H264_ENC_CTX_BUF_SIZE_V7,
-	.other_enc_ctx	= MFC_OTHER_ENC_CTX_BUF_SIZE_V7,
-};
-
-static struct s5p_mfc_buf_size buf_size_v7 = {
-	.fw	= MAX_FW_SIZE_V7,
-	.cpb	= MAX_CPB_SIZE_V7,
-	.priv	= &mfc_buf_size_v7,
-};
-
-static struct s5p_mfc_variant mfc_drvdata_v7 = {
-	.version	= MFC_VERSION_V7,
-	.version_bit	= MFC_V7_BIT,
-	.port_num	= MFC_NUM_PORTS_V7,
-	.buf_size	= &buf_size_v7,
-	.fw_name[0]     = "s5p-mfc-v7.fw",
-	.clk_names	= {"mfc", "sclk_mfc"},
-	.num_clocks	= 2,
-};
-
-static struct s5p_mfc_buf_size_v6 mfc_buf_size_v8 = {
-	.dev_ctx	= MFC_CTX_BUF_SIZE_V8,
-	.h264_dec_ctx	= MFC_H264_DEC_CTX_BUF_SIZE_V8,
-	.other_dec_ctx	= MFC_OTHER_DEC_CTX_BUF_SIZE_V8,
-	.h264_enc_ctx	= MFC_H264_ENC_CTX_BUF_SIZE_V8,
-	.other_enc_ctx	= MFC_OTHER_ENC_CTX_BUF_SIZE_V8,
-};
-
-static struct s5p_mfc_buf_size buf_size_v8 = {
-	.fw	= MAX_FW_SIZE_V8,
-	.cpb	= MAX_CPB_SIZE_V8,
-	.priv	= &mfc_buf_size_v8,
-};
-
-static struct s5p_mfc_variant mfc_drvdata_v8 = {
-	.version	= MFC_VERSION_V8,
-	.version_bit	= MFC_V8_BIT,
-	.port_num	= MFC_NUM_PORTS_V8,
-	.buf_size	= &buf_size_v8,
-	.fw_name[0]     = "s5p-mfc-v8.fw",
-	.clk_names	= {"mfc"},
-	.num_clocks	= 1,
-};
-
-static struct s5p_mfc_variant mfc_drvdata_v8_5433 = {
-	.version	= MFC_VERSION_V8,
-	.version_bit	= MFC_V8_BIT,
-	.port_num	= MFC_NUM_PORTS_V8,
-	.buf_size	= &buf_size_v8,
-	.fw_name[0]     = "s5p-mfc-v8.fw",
-	.clk_names	= {"pclk", "aclk", "aclk_xiu"},
-	.num_clocks	= 3,
-};
-
-static struct s5p_mfc_buf_size_v6 mfc_buf_size_v10 = {
-	.dev_ctx        = MFC_CTX_BUF_SIZE_V10,
-	.h264_dec_ctx   = MFC_H264_DEC_CTX_BUF_SIZE_V10,
-	.other_dec_ctx  = MFC_OTHER_DEC_CTX_BUF_SIZE_V10,
-	.h264_enc_ctx   = MFC_H264_ENC_CTX_BUF_SIZE_V10,
-	.hevc_enc_ctx   = MFC_HEVC_ENC_CTX_BUF_SIZE_V10,
-	.other_enc_ctx  = MFC_OTHER_ENC_CTX_BUF_SIZE_V10,
-};
-
-static struct s5p_mfc_buf_size buf_size_v10 = {
-	.fw     = MAX_FW_SIZE_V10,
-	.cpb    = MAX_CPB_SIZE_V10,
-	.priv   = &mfc_buf_size_v10,
-};
-
-static struct s5p_mfc_variant mfc_drvdata_v10 = {
-	.version        = MFC_VERSION_V10,
-	.version_bit    = MFC_V10_BIT,
-	.port_num       = MFC_NUM_PORTS_V10,
-	.buf_size       = &buf_size_v10,
-	.fw_name[0]     = "s5p-mfc-v10.fw",
-};
-
-static const struct of_device_id exynos_mfc_match[] = {
-	{
-		.compatible = "samsung,mfc-v5",
-		.data = &mfc_drvdata_v5,
-	}, {
-		.compatible = "samsung,mfc-v6",
-		.data = &mfc_drvdata_v6,
-	}, {
-		.compatible = "samsung,mfc-v7",
-		.data = &mfc_drvdata_v7,
-	}, {
-		.compatible = "samsung,mfc-v8",
-		.data = &mfc_drvdata_v8,
-	}, {
-		.compatible = "samsung,exynos5433-mfc",
-		.data = &mfc_drvdata_v8_5433,
-	}, {
-		.compatible = "samsung,mfc-v10",
-		.data = &mfc_drvdata_v10,
-	},
-	{},
-};
-MODULE_DEVICE_TABLE(of, exynos_mfc_match);
-
-static struct platform_driver s5p_mfc_driver = {
-	.probe		= s5p_mfc_probe,
-	.remove		= s5p_mfc_remove,
-	.driver	= {
-		.name	= S5P_MFC_NAME,
-		.pm	= &s5p_mfc_pm_ops,
-		.of_match_table = exynos_mfc_match,
-	},
-};
-
-module_platform_driver(s5p_mfc_driver);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Kamil Debski <k.debski@samsung.com>");
-MODULE_DESCRIPTION("Samsung S5P Multi Format Codec V4L2 driver");
-