[media] coda: move BIT specific functions into separate file

This patch moves the BIT processor specific coda_context_ops, the firmware
upload and other related functions from coda-common.c into coda-bit.c.

Signed-off-by: Philipp Zabel <[e-mail]>
Signed-off-by: Kamil Debski <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/platform/coda/Makefile

···
-coda-objs := coda-common.o coda-h264.o
+coda-objs := coda-common.o coda-bit.o coda-h264.o
 
 obj-$(CONFIG_VIDEO_CODA) += coda.o

drivers/media/platform/coda/coda-bit.c

···
+/*
+ * Coda multi-standard codec IP - BIT processor functions
+ *
+ * Copyright (C) 2012 Vista Silicon S.L.
+ *    Javier Martin, <[e-mail]>
+ *    Xavier Duret
+ * Copyright (C) 2012-2014 Philipp Zabel, Pengutronix
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/clk.h>
+#include <linux/irqreturn.h>
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/reset.h>
+#include <linux/videodev2.h>
+
+#include <media/v4l2-common.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-fh.h>
+#include <media/v4l2-mem2mem.h>
+#include <media/videobuf2-core.h>
+#include <media/videobuf2-dma-contig.h>
+#include <media/videobuf2-vmalloc.h>
+
+#include "coda.h"
+
+#define CODA7_PS_BUF_SIZE	0x28000
+#define CODA9_PS_SAVE_SIZE	(512 * 1024)
+
+#define CODA_DEFAULT_GAMMA	4096
+#define CODA9_DEFAULT_GAMMA	24576	/* 0.75 * 32768 */
+
+static inline int coda_is_initialized(struct coda_dev *dev)
+{
+	return (coda_read(dev, CODA_REG_BIT_CUR_PC) != 0);
+}
+
+static inline unsigned long coda_isbusy(struct coda_dev *dev)
+{
+	return coda_read(dev, CODA_REG_BIT_BUSY);
+}
+
+static int coda_wait_timeout(struct coda_dev *dev)
+{
+	unsigned long timeout = jiffies + msecs_to_jiffies(1000);
+
+	while (coda_isbusy(dev)) {
+		if (time_after(jiffies, timeout))
+			return -ETIMEDOUT;
+	}
+	return 0;
+}
+
+static void coda_command_async(struct coda_ctx *ctx, int cmd)
+{
+	struct coda_dev *dev = ctx->dev;
+
+	if (dev->devtype->product == CODA_960 ||
+	    dev->devtype->product == CODA_7541) {
+		/* Restore context related registers to CODA */
+		coda_write(dev, ctx->bit_stream_param,
+				CODA_REG_BIT_BIT_STREAM_PARAM);
+		coda_write(dev, ctx->frm_dis_flg,
+				CODA_REG_BIT_FRM_DIS_FLG(ctx->reg_idx));
+		coda_write(dev, ctx->frame_mem_ctrl,
+				CODA_REG_BIT_FRAME_MEM_CTRL);
+		coda_write(dev, ctx->workbuf.paddr, CODA_REG_BIT_WORK_BUF_ADDR);
+	}
+
+	if (dev->devtype->product == CODA_960) {
+		coda_write(dev, 1, CODA9_GDI_WPROT_ERR_CLR);
+		coda_write(dev, 0, CODA9_GDI_WPROT_RGN_EN);
+	}
+
+	coda_write(dev, CODA_REG_BIT_BUSY_FLAG, CODA_REG_BIT_BUSY);
+
+	coda_write(dev, ctx->idx, CODA_REG_BIT_RUN_INDEX);
+	coda_write(dev, ctx->params.codec_mode, CODA_REG_BIT_RUN_COD_STD);
+	coda_write(dev, ctx->params.codec_mode_aux, CODA7_REG_BIT_RUN_AUX_STD);
+
+	coda_write(dev, cmd, CODA_REG_BIT_RUN_COMMAND);
+}
+
+static int coda_command_sync(struct coda_ctx *ctx, int cmd)
+{
+	struct coda_dev *dev = ctx->dev;
+
+	coda_command_async(ctx, cmd);
+	return coda_wait_timeout(dev);
+}
+
+int coda_hw_reset(struct coda_ctx *ctx)
+{
+	struct coda_dev *dev = ctx->dev;
+	unsigned long timeout;
+	unsigned int idx;
+	int ret;
+
+	if (!dev->rstc)
+		return -ENOENT;
+
+	idx = coda_read(dev, CODA_REG_BIT_RUN_INDEX);
+
+	if (dev->devtype->product == CODA_960) {
+		timeout = jiffies + msecs_to_jiffies(100);
+		coda_write(dev, 0x11, CODA9_GDI_BUS_CTRL);
+		while (coda_read(dev, CODA9_GDI_BUS_STATUS) != 0x77) {
+			if (time_after(jiffies, timeout))
+				return -ETIME;
+			cpu_relax();
+		}
+	}
+
+	ret = reset_control_reset(dev->rstc);
+	if (ret < 0)
+		return ret;
+
+	if (dev->devtype->product == CODA_960)
+		coda_write(dev, 0x00, CODA9_GDI_BUS_CTRL);
+	coda_write(dev, CODA_REG_BIT_BUSY_FLAG, CODA_REG_BIT_BUSY);
+	coda_write(dev, CODA_REG_RUN_ENABLE, CODA_REG_BIT_CODE_RUN);
+	ret = coda_wait_timeout(dev);
+	coda_write(dev, idx, CODA_REG_BIT_RUN_INDEX);
+
+	return ret;
+}
+
+static void coda_kfifo_sync_from_device(struct coda_ctx *ctx)
+{
+	struct __kfifo *kfifo = &ctx->bitstream_fifo.kfifo;
+	struct coda_dev *dev = ctx->dev;
+	u32 rd_ptr;
+
+	rd_ptr = coda_read(dev, CODA_REG_BIT_RD_PTR(ctx->reg_idx));
+	kfifo->out = (kfifo->in & ~kfifo->mask) |
+		      (rd_ptr - ctx->bitstream.paddr);
+	if (kfifo->out > kfifo->in)
+		kfifo->out -= kfifo->mask + 1;
+}
+
+static void coda_kfifo_sync_to_device_full(struct coda_ctx *ctx)
+{
+	struct __kfifo *kfifo = &ctx->bitstream_fifo.kfifo;
+	struct coda_dev *dev = ctx->dev;
+	u32 rd_ptr, wr_ptr;
+
+	rd_ptr = ctx->bitstream.paddr + (kfifo->out & kfifo->mask);
+	coda_write(dev, rd_ptr, CODA_REG_BIT_RD_PTR(ctx->reg_idx));
+	wr_ptr = ctx->bitstream.paddr + (kfifo->in & kfifo->mask);
+	coda_write(dev, wr_ptr, CODA_REG_BIT_WR_PTR(ctx->reg_idx));
+}
+
+static void coda_kfifo_sync_to_device_write(struct coda_ctx *ctx)
+{
+	struct __kfifo *kfifo = &ctx->bitstream_fifo.kfifo;
+	struct coda_dev *dev = ctx->dev;
+	u32 wr_ptr;
+
+	wr_ptr = ctx->bitstream.paddr + (kfifo->in & kfifo->mask);
+	coda_write(dev, wr_ptr, CODA_REG_BIT_WR_PTR(ctx->reg_idx));
+}
+
+static int coda_bitstream_queue(struct coda_ctx *ctx, struct vb2_buffer *src_buf)
+{
+	u32 src_size = vb2_get_plane_payload(src_buf, 0);
+	u32 n;
+
+	n = kfifo_in(&ctx->bitstream_fifo, vb2_plane_vaddr(src_buf, 0), src_size);
+	if (n < src_size)
+		return -ENOSPC;
+
+	dma_sync_single_for_device(&ctx->dev->plat_dev->dev, ctx->bitstream.paddr,
+				   ctx->bitstream.size, DMA_TO_DEVICE);
+
+	src_buf->v4l2_buf.sequence = ctx->qsequence++;
+
+	return 0;
+}
+
+static bool coda_bitstream_try_queue(struct coda_ctx *ctx,
+				     struct vb2_buffer *src_buf)
+{
+	int ret;
+
+	if (coda_get_bitstream_payload(ctx) +
+	    vb2_get_plane_payload(src_buf, 0) + 512 >= ctx->bitstream.size)
+		return false;
+
+	if (vb2_plane_vaddr(src_buf, 0) == NULL) {
+		v4l2_err(&ctx->dev->v4l2_dev, "trying to queue empty buffer\n");
+		return true;
+	}
+
+	ret = coda_bitstream_queue(ctx, src_buf);
+	if (ret < 0) {
+		v4l2_err(&ctx->dev->v4l2_dev, "bitstream buffer overflow\n");
+		return false;
+	}
+	/* Sync read pointer to device */
+	if (ctx == v4l2_m2m_get_curr_priv(ctx->dev->m2m_dev))
+		coda_kfifo_sync_to_device_write(ctx);
+
+	ctx->hold = false;
+
+	return true;
+}
+
+void coda_fill_bitstream(struct coda_ctx *ctx)
+{
+	struct vb2_buffer *src_buf;
+	struct coda_timestamp *ts;
+
+	while (v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx) > 0) {
+		src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
+
+		if (coda_bitstream_try_queue(ctx, src_buf)) {
+			/*
+			 * Source buffer is queued in the bitstream ringbuffer;
+			 * queue the timestamp and mark source buffer as done
+			 */
+			src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
+
+			ts = kmalloc(sizeof(*ts), GFP_KERNEL);
+			if (ts) {
+				ts->sequence = src_buf->v4l2_buf.sequence;
+				ts->timecode = src_buf->v4l2_buf.timecode;
+				ts->timestamp = src_buf->v4l2_buf.timestamp;
+				list_add_tail(&ts->list, &ctx->timestamp_list);
+			}
+
+			v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
+		} else {
+			break;
+		}
+	}
+}
+
+void coda_bit_stream_end_flag(struct coda_ctx *ctx)
+{
+	struct coda_dev *dev = ctx->dev;
+
+	ctx->bit_stream_param |= CODA_BIT_STREAM_END_FLAG;
+
+	if ((dev->devtype->product == CODA_960) &&
+	    coda_isbusy(dev) &&
+	    (ctx->idx == coda_read(dev, CODA_REG_BIT_RUN_INDEX))) {
+		/* If this context is currently running, update the hardware flag */
+		coda_write(dev, ctx->bit_stream_param, CODA_REG_BIT_BIT_STREAM_PARAM);
+	}
+}
+
+static void coda_parabuf_write(struct coda_ctx *ctx, int index, u32 value)
+{
+	struct coda_dev *dev = ctx->dev;
+	u32 *p = ctx->parabuf.vaddr;
+
+	if (dev->devtype->product == CODA_DX6)
+		p[index] = value;
+	else
+		p[index ^ 1] = value;
+}
+
+static void coda_free_framebuffers(struct coda_ctx *ctx)
+{
+	int i;
+
+	for (i = 0; i < CODA_MAX_FRAMEBUFFERS; i++)
+		coda_free_aux_buf(ctx->dev, &ctx->internal_frames[i]);
+}
+
+static int coda_alloc_framebuffers(struct coda_ctx *ctx,
+				   struct coda_q_data *q_data, u32 fourcc)
+{
+	struct coda_dev *dev = ctx->dev;
+	int width, height;
+	dma_addr_t paddr;
+	int ysize;
+	int ret;
+	int i;
+
+	if (ctx->codec && (ctx->codec->src_fourcc == V4L2_PIX_FMT_H264 ||
+	     ctx->codec->dst_fourcc == V4L2_PIX_FMT_H264)) {
+		width = round_up(q_data->width, 16);
+		height = round_up(q_data->height, 16);
+	} else {
+		width = round_up(q_data->width, 8);
+		height = q_data->height;
+	}
+	ysize = width * height;
+
+	/* Allocate frame buffers */
+	for (i = 0; i < ctx->num_internal_frames; i++) {
+		size_t size;
+		char *name;
+
+		size = ysize + ysize / 2;
+		if (ctx->codec->src_fourcc == V4L2_PIX_FMT_H264 &&
+		    dev->devtype->product != CODA_DX6)
+			size += ysize / 4;
+		name = kasprintf(GFP_KERNEL, "fb%d", i);
+		ret = coda_alloc_context_buf(ctx, &ctx->internal_frames[i],
+					     size, name);
+		kfree(name);
+		if (ret < 0) {
+			coda_free_framebuffers(ctx);
+			return ret;
+		}
+	}
+
+	/* Register frame buffers in the parameter buffer */
+	for (i = 0; i < ctx->num_internal_frames; i++) {
+		paddr = ctx->internal_frames[i].paddr;
+		coda_parabuf_write(ctx, i * 3 + 0, paddr); /* Y */
+		coda_parabuf_write(ctx, i * 3 + 1, paddr + ysize); /* Cb */
+		coda_parabuf_write(ctx, i * 3 + 2, paddr + ysize + ysize/4); /* Cr */
+
+		/* mvcol buffer for h.264 */
+		if (ctx->codec->src_fourcc == V4L2_PIX_FMT_H264 &&
+		    dev->devtype->product != CODA_DX6)
+			coda_parabuf_write(ctx, 96 + i,
+					   ctx->internal_frames[i].paddr +
+					   ysize + ysize/4 + ysize/4);
+	}
+
+	/* mvcol buffer for mpeg4 */
+	if ((dev->devtype->product != CODA_DX6) &&
+	    (ctx->codec->src_fourcc == V4L2_PIX_FMT_MPEG4))
+		coda_parabuf_write(ctx, 97, ctx->internal_frames[i].paddr +
+					    ysize + ysize/4 + ysize/4);
+
+	return 0;
+}
+
+static void coda_free_context_buffers(struct coda_ctx *ctx)
+{
+	struct coda_dev *dev = ctx->dev;
+
+	coda_free_aux_buf(dev, &ctx->slicebuf);
+	coda_free_aux_buf(dev, &ctx->psbuf);
+	if (dev->devtype->product != CODA_DX6)
+		coda_free_aux_buf(dev, &ctx->workbuf);
+}
+
+static int coda_alloc_context_buffers(struct coda_ctx *ctx,
+				      struct coda_q_data *q_data)
+{
+	struct coda_dev *dev = ctx->dev;
+	size_t size;
+	int ret;
+
+	if (dev->devtype->product == CODA_DX6)
+		return 0;
+
+	if (ctx->psbuf.vaddr) {
+		v4l2_err(&dev->v4l2_dev, "psmembuf still allocated\n");
+		return -EBUSY;
+	}
+	if (ctx->slicebuf.vaddr) {
+		v4l2_err(&dev->v4l2_dev, "slicebuf still allocated\n");
+		return -EBUSY;
+	}
+	if (ctx->workbuf.vaddr) {
+		v4l2_err(&dev->v4l2_dev, "context buffer still allocated\n");
+		ret = -EBUSY;
+		return -ENOMEM;
+	}
+
+	if (q_data->fourcc == V4L2_PIX_FMT_H264) {
+		/* worst case slice size */
+		size = (DIV_ROUND_UP(q_data->width, 16) *
+			DIV_ROUND_UP(q_data->height, 16)) * 3200 / 8 + 512;
+		ret = coda_alloc_context_buf(ctx, &ctx->slicebuf, size, "slicebuf");
+		if (ret < 0) {
+			v4l2_err(&dev->v4l2_dev, "failed to allocate %d byte slice buffer",
+				 ctx->slicebuf.size);
+			return ret;
+		}
+	}
+
+	if (dev->devtype->product == CODA_7541) {
+		ret = coda_alloc_context_buf(ctx, &ctx->psbuf, CODA7_PS_BUF_SIZE, "psbuf");
+		if (ret < 0) {
+			v4l2_err(&dev->v4l2_dev, "failed to allocate psmem buffer");
+			goto err;
+		}
+	}
+
+	size = dev->devtype->workbuf_size;
+	if (dev->devtype->product == CODA_960 &&
+	    q_data->fourcc == V4L2_PIX_FMT_H264)
+		size += CODA9_PS_SAVE_SIZE;
+	ret = coda_alloc_context_buf(ctx, &ctx->workbuf, size, "workbuf");
+	if (ret < 0) {
+		v4l2_err(&dev->v4l2_dev, "failed to allocate %d byte context buffer",
+			 ctx->workbuf.size);
+		goto err;
+	}
+
+	return 0;
+
+err:
+	coda_free_context_buffers(ctx);
+	return ret;
+}
+
+static int coda_encode_header(struct coda_ctx *ctx, struct vb2_buffer *buf,
+			      int header_code, u8 *header, int *size)
+{
+	struct coda_dev *dev = ctx->dev;
+	size_t bufsize;
+	int ret;
+	int i;
+
+	if (dev->devtype->product == CODA_960)
+		memset(vb2_plane_vaddr(buf, 0), 0, 64);
+
+	coda_write(dev, vb2_dma_contig_plane_dma_addr(buf, 0),
+		   CODA_CMD_ENC_HEADER_BB_START);
+	bufsize = vb2_plane_size(buf, 0);
+	if (dev->devtype->product == CODA_960)
+		bufsize /= 1024;
+	coda_write(dev, bufsize, CODA_CMD_ENC_HEADER_BB_SIZE);
+	coda_write(dev, header_code, CODA_CMD_ENC_HEADER_CODE);
+	ret = coda_command_sync(ctx, CODA_COMMAND_ENCODE_HEADER);
+	if (ret < 0) {
+		v4l2_err(&dev->v4l2_dev, "CODA_COMMAND_ENCODE_HEADER timeout\n");
+		return ret;
+	}
+
+	if (dev->devtype->product == CODA_960) {
+		for (i = 63; i > 0; i--)
+			if (((char *)vb2_plane_vaddr(buf, 0))[i] != 0)
+				break;
+		*size = i + 1;
+	} else {
+		*size = coda_read(dev, CODA_REG_BIT_WR_PTR(ctx->reg_idx)) -
+			coda_read(dev, CODA_CMD_ENC_HEADER_BB_START);
+	}
+	memcpy(header, vb2_plane_vaddr(buf, 0), *size);
+
+	return 0;
+}
+
+static phys_addr_t coda_iram_alloc(struct coda_iram_info *iram, size_t size)
+{
+	phys_addr_t ret;
+
+	size = round_up(size, 1024);
+	if (size > iram->remaining)
+		return 0;
+	iram->remaining -= size;
+
+	ret = iram->next_paddr;
+	iram->next_paddr += size;
+
+	return ret;
+}
+
+static void coda_setup_iram(struct coda_ctx *ctx)
+{
+	struct coda_iram_info *iram_info = &ctx->iram_info;
+	struct coda_dev *dev = ctx->dev;
+	int mb_width;
+	int dbk_bits;
+	int bit_bits;
+	int ip_bits;
+
+	memset(iram_info, 0, sizeof(*iram_info));
+	iram_info->next_paddr = dev->iram.paddr;
+	iram_info->remaining = dev->iram.size;
+
+	switch (dev->devtype->product) {
+	case CODA_7541:
+		dbk_bits = CODA7_USE_HOST_DBK_ENABLE | CODA7_USE_DBK_ENABLE;
+		bit_bits = CODA7_USE_HOST_BIT_ENABLE | CODA7_USE_BIT_ENABLE;
+		ip_bits = CODA7_USE_HOST_IP_ENABLE | CODA7_USE_IP_ENABLE;
+		break;
+	case CODA_960:
+		dbk_bits = CODA9_USE_HOST_DBK_ENABLE | CODA9_USE_DBK_ENABLE;
+		bit_bits = CODA9_USE_HOST_BIT_ENABLE | CODA7_USE_BIT_ENABLE;
+		ip_bits = CODA9_USE_HOST_IP_ENABLE | CODA7_USE_IP_ENABLE;
+		break;
+	default: /* CODA_DX6 */
+		return;
+	}
+
+	if (ctx->inst_type == CODA_INST_ENCODER) {
+		struct coda_q_data *q_data_src;
+
+		q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
+		mb_width = DIV_ROUND_UP(q_data_src->width, 16);
+
+		/* Prioritize in case IRAM is too small for everything */
+		if (dev->devtype->product == CODA_7541) {
+			iram_info->search_ram_size = round_up(mb_width * 16 *
+							      36 + 2048, 1024);
+			iram_info->search_ram_paddr = coda_iram_alloc(iram_info,
+							iram_info->search_ram_size);
+			if (!iram_info->search_ram_paddr) {
+				pr_err("IRAM is smaller than the search ram size\n");
+				goto out;
+			}
+			iram_info->axi_sram_use |= CODA7_USE_HOST_ME_ENABLE |
+						   CODA7_USE_ME_ENABLE;
+		}
+
+		/* Only H.264BP and H.263P3 are considered */
+		iram_info->buf_dbk_y_use = coda_iram_alloc(iram_info, 64 * mb_width);
+		iram_info->buf_dbk_c_use = coda_iram_alloc(iram_info, 64 * mb_width);
+		if (!iram_info->buf_dbk_c_use)
+			goto out;
+		iram_info->axi_sram_use |= dbk_bits;
+
+		iram_info->buf_bit_use = coda_iram_alloc(iram_info, 128 * mb_width);
+		if (!iram_info->buf_bit_use)
+			goto out;
+		iram_info->axi_sram_use |= bit_bits;
+
+		iram_info->buf_ip_ac_dc_use = coda_iram_alloc(iram_info, 128 * mb_width);
+		if (!iram_info->buf_ip_ac_dc_use)
+			goto out;
+		iram_info->axi_sram_use |= ip_bits;
+
+		/* OVL and BTP disabled for encoder */
+	} else if (ctx->inst_type == CODA_INST_DECODER) {
+		struct coda_q_data *q_data_dst;
+
+		q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
+		mb_width = DIV_ROUND_UP(q_data_dst->width, 16);
+
+		iram_info->buf_dbk_y_use = coda_iram_alloc(iram_info, 128 * mb_width);
+		iram_info->buf_dbk_c_use = coda_iram_alloc(iram_info, 128 * mb_width);
+		if (!iram_info->buf_dbk_c_use)
+			goto out;
+		iram_info->axi_sram_use |= dbk_bits;
+
+		iram_info->buf_bit_use = coda_iram_alloc(iram_info, 128 * mb_width);
+		if (!iram_info->buf_bit_use)
+			goto out;
+		iram_info->axi_sram_use |= bit_bits;
+
+		iram_info->buf_ip_ac_dc_use = coda_iram_alloc(iram_info, 128 * mb_width);
+		if (!iram_info->buf_ip_ac_dc_use)
+			goto out;
+		iram_info->axi_sram_use |= ip_bits;
+
+		/* OVL and BTP unused as there is no VC1 support yet */
+	}
+
+out:
+	if (!(iram_info->axi_sram_use & CODA7_USE_HOST_IP_ENABLE))
+		v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
+			 "IRAM smaller than needed\n");
+
+	if (dev->devtype->product == CODA_7541) {
+		/* TODO - Enabling these causes picture errors on CODA7541 */
+		if (ctx->inst_type == CODA_INST_DECODER) {
+			/* fw 1.4.50 */
+			iram_info->axi_sram_use &= ~(CODA7_USE_HOST_IP_ENABLE |
+						     CODA7_USE_IP_ENABLE);
+		} else {
+			/* fw 13.4.29 */
+			iram_info->axi_sram_use &= ~(CODA7_USE_HOST_IP_ENABLE |
+						     CODA7_USE_HOST_DBK_ENABLE |
+						     CODA7_USE_IP_ENABLE |
+						     CODA7_USE_DBK_ENABLE);
+		}
+	}
+}
+
+static u32 coda_supported_firmwares[] = {
+	CODA_FIRMWARE_VERNUM(CODA_DX6, 2, 2, 5),
+	CODA_FIRMWARE_VERNUM(CODA_7541, 1, 4, 50),
+	CODA_FIRMWARE_VERNUM(CODA_960, 2, 1, 5),
+};
+
+static bool coda_firmware_supported(u32 vernum)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(coda_supported_firmwares); i++)
+		if (vernum == coda_supported_firmwares[i])
+			return true;
+	return false;
+}
+
+int coda_check_firmware(struct coda_dev *dev)
+{
+	u16 product, major, minor, release;
+	u32 data;
+	int ret;
+
+	ret = clk_prepare_enable(dev->clk_per);
+	if (ret)
+		goto err_clk_per;
+
+	ret = clk_prepare_enable(dev->clk_ahb);
+	if (ret)
+		goto err_clk_ahb;
+
+	coda_write(dev, 0, CODA_CMD_FIRMWARE_VERNUM);
+	coda_write(dev, CODA_REG_BIT_BUSY_FLAG, CODA_REG_BIT_BUSY);
+	coda_write(dev, 0, CODA_REG_BIT_RUN_INDEX);
+	coda_write(dev, 0, CODA_REG_BIT_RUN_COD_STD);
+	coda_write(dev, CODA_COMMAND_FIRMWARE_GET, CODA_REG_BIT_RUN_COMMAND);
+	if (coda_wait_timeout(dev)) {
+		v4l2_err(&dev->v4l2_dev, "firmware get command error\n");
+		ret = -EIO;
+		goto err_run_cmd;
+	}
+
+	if (dev->devtype->product == CODA_960) {
+		data = coda_read(dev, CODA9_CMD_FIRMWARE_CODE_REV);
+		v4l2_info(&dev->v4l2_dev, "Firmware code revision: %d\n",
+			  data);
+	}
+
+	/* Check we are compatible with the loaded firmware */
+	data = coda_read(dev, CODA_CMD_FIRMWARE_VERNUM);
+	product = CODA_FIRMWARE_PRODUCT(data);
+	major = CODA_FIRMWARE_MAJOR(data);
+	minor = CODA_FIRMWARE_MINOR(data);
+	release = CODA_FIRMWARE_RELEASE(data);
+
+	clk_disable_unprepare(dev->clk_per);
+	clk_disable_unprepare(dev->clk_ahb);
+
+	if (product != dev->devtype->product) {
+		v4l2_err(&dev->v4l2_dev, "Wrong firmware. Hw: %s, Fw: %s,"
+			 " Version: %u.%u.%u\n",
+			 coda_product_name(dev->devtype->product),
+			 coda_product_name(product), major, minor, release);
+		return -EINVAL;
+	}
+
+	v4l2_info(&dev->v4l2_dev, "Initialized %s.\n",
+		  coda_product_name(product));
+
+	if (coda_firmware_supported(data)) {
+		v4l2_info(&dev->v4l2_dev, "Firmware version: %u.%u.%u\n",
+			  major, minor, release);
+	} else {
+		v4l2_warn(&dev->v4l2_dev, "Unsupported firmware version: "
+			  "%u.%u.%u\n", major, minor, release);
+	}
+
+	return 0;
+
+err_run_cmd:
+	clk_disable_unprepare(dev->clk_ahb);
+err_clk_ahb:
+	clk_disable_unprepare(dev->clk_per);
+err_clk_per:
+	return ret;
+}
+
+/*
+ * Encoder context operations
+ */
+
+static int coda_start_encoding(struct coda_ctx *ctx)
+{
+	struct coda_dev *dev = ctx->dev;
+	struct v4l2_device *v4l2_dev = &dev->v4l2_dev;
+	struct coda_q_data *q_data_src, *q_data_dst;
+	u32 bitstream_buf, bitstream_size;
+	struct vb2_buffer *buf;
+	int gamma, ret, value;
+	u32 dst_fourcc;
+
+	q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
+	q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
+	dst_fourcc = q_data_dst->fourcc;
+
+	/* Allocate per-instance buffers */
+	ret = coda_alloc_context_buffers(ctx, q_data_src);
+	if (ret < 0)
+		return ret;
+
+	buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
+	bitstream_buf = vb2_dma_contig_plane_dma_addr(buf, 0);
+	bitstream_size = q_data_dst->sizeimage;
+
+	if (!coda_is_initialized(dev)) {
+		v4l2_err(v4l2_dev, "coda is not initialized.\n");
+		return -EFAULT;
+	}
+
+	mutex_lock(&dev->coda_mutex);
+
+	coda_write(dev, ctx->parabuf.paddr, CODA_REG_BIT_PARA_BUF_ADDR);
+	coda_write(dev, bitstream_buf, CODA_REG_BIT_RD_PTR(ctx->reg_idx));
+	coda_write(dev, bitstream_buf, CODA_REG_BIT_WR_PTR(ctx->reg_idx));
+	switch (dev->devtype->product) {
+	case CODA_DX6:
+		coda_write(dev, CODADX6_STREAM_BUF_DYNALLOC_EN |
+			CODADX6_STREAM_BUF_PIC_RESET, CODA_REG_BIT_STREAM_CTRL);
+		break;
+	case CODA_960:
+		coda_write(dev, 0, CODA9_GDI_WPROT_RGN_EN);
+		/* fallthrough */
+	case CODA_7541:
+		coda_write(dev, CODA7_STREAM_BUF_DYNALLOC_EN |
+			CODA7_STREAM_BUF_PIC_RESET, CODA_REG_BIT_STREAM_CTRL);
+		break;
+	}
+
+	value = coda_read(dev, CODA_REG_BIT_FRAME_MEM_CTRL);
+	value &= ~(1 << 2 | 0x7 << 9);
+	ctx->frame_mem_ctrl = value;
+	coda_write(dev, value, CODA_REG_BIT_FRAME_MEM_CTRL);
+
+	if (dev->devtype->product == CODA_DX6) {
+		/* Configure the coda */
+		coda_write(dev, dev->iram.paddr, CODADX6_REG_BIT_SEARCH_RAM_BASE_ADDR);
+	}
+
+	/* Could set rotation here if needed */
+	switch (dev->devtype->product) {
+	case CODA_DX6:
+		value = (q_data_src->width & CODADX6_PICWIDTH_MASK) << CODADX6_PICWIDTH_OFFSET;
+		value |= (q_data_src->height & CODADX6_PICHEIGHT_MASK) << CODA_PICHEIGHT_OFFSET;
+		break;
+	case CODA_7541:
+		if (dst_fourcc == V4L2_PIX_FMT_H264) {
+			value = (round_up(q_data_src->width, 16) &
+				 CODA7_PICWIDTH_MASK) << CODA7_PICWIDTH_OFFSET;
+			value |= (round_up(q_data_src->height, 16) &
+				  CODA7_PICHEIGHT_MASK) << CODA_PICHEIGHT_OFFSET;
+			break;
+		}
+		/* fallthrough */
+	case CODA_960:
+		value = (q_data_src->width & CODA7_PICWIDTH_MASK) << CODA7_PICWIDTH_OFFSET;
+		value |= (q_data_src->height & CODA7_PICHEIGHT_MASK) << CODA_PICHEIGHT_OFFSET;
+	}
+	coda_write(dev, value, CODA_CMD_ENC_SEQ_SRC_SIZE);
+	coda_write(dev, ctx->params.framerate,
+		   CODA_CMD_ENC_SEQ_SRC_F_RATE);
+
+	ctx->params.codec_mode = ctx->codec->mode;
+	switch (dst_fourcc) {
+	case V4L2_PIX_FMT_MPEG4:
+		if (dev->devtype->product == CODA_960)
+			coda_write(dev, CODA9_STD_MPEG4, CODA_CMD_ENC_SEQ_COD_STD);
+		else
+			coda_write(dev, CODA_STD_MPEG4, CODA_CMD_ENC_SEQ_COD_STD);
+		coda_write(dev, 0, CODA_CMD_ENC_SEQ_MP4_PARA);
+		break;
+	case V4L2_PIX_FMT_H264:
+		if (dev->devtype->product == CODA_960)
+			coda_write(dev, CODA9_STD_H264, CODA_CMD_ENC_SEQ_COD_STD);
+		else
+			coda_write(dev, CODA_STD_H264, CODA_CMD_ENC_SEQ_COD_STD);
+		if (ctx->params.h264_deblk_enabled) {
+			value = ((ctx->params.h264_deblk_alpha &
+				  CODA_264PARAM_DEBLKFILTEROFFSETALPHA_MASK) <<
+				 CODA_264PARAM_DEBLKFILTEROFFSETALPHA_OFFSET) |
+				((ctx->params.h264_deblk_beta &
+				  CODA_264PARAM_DEBLKFILTEROFFSETBETA_MASK) <<
+				 CODA_264PARAM_DEBLKFILTEROFFSETBETA_OFFSET);
+		} else {
+			value = 1 << CODA_264PARAM_DISABLEDEBLK_OFFSET;
+		}
+		coda_write(dev, value, CODA_CMD_ENC_SEQ_264_PARA);
+		break;
+	default:
+		v4l2_err(v4l2_dev,
+			 "dst format (0x%08x) invalid.\n", dst_fourcc);
+		ret = -EINVAL;
+		goto out;
+	}
+
+	switch (ctx->params.slice_mode) {
+	case V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_SINGLE:
+		value = 0;
+		break;
+	case V4L2_MPEG_VIDEO_MULTI_SICE_MODE_MAX_MB:
+		value  = (ctx->params.slice_max_mb & CODA_SLICING_SIZE_MASK) << CODA_SLICING_SIZE_OFFSET;
+		value |= (1 & CODA_SLICING_UNIT_MASK) << CODA_SLICING_UNIT_OFFSET;
+		value |=  1 & CODA_SLICING_MODE_MASK;
+		break;
+	case V4L2_MPEG_VIDEO_MULTI_SICE_MODE_MAX_BYTES:
+		value  = (ctx->params.slice_max_bits & CODA_SLICING_SIZE_MASK) << CODA_SLICING_SIZE_OFFSET;
+		value |= (0 & CODA_SLICING_UNIT_MASK) << CODA_SLICING_UNIT_OFFSET;
+		value |=  1 & CODA_SLICING_MODE_MASK;
+		break;
+	}
+	coda_write(dev, value, CODA_CMD_ENC_SEQ_SLICE_MODE);
+	value = ctx->params.gop_size & CODA_GOP_SIZE_MASK;
+	coda_write(dev, value, CODA_CMD_ENC_SEQ_GOP_SIZE);
+
+	if (ctx->params.bitrate) {
+		/* Rate control enabled */
+		value = (ctx->params.bitrate & CODA_RATECONTROL_BITRATE_MASK) << CODA_RATECONTROL_BITRATE_OFFSET;
+		value |=  1 & CODA_RATECONTROL_ENABLE_MASK;
+		if (dev->devtype->product == CODA_960)
+			value |= BIT(31); /* disable autoskip */
+	} else {
+		value = 0;
+	}
+	coda_write(dev, value, CODA_CMD_ENC_SEQ_RC_PARA);
+
+	coda_write(dev, 0, CODA_CMD_ENC_SEQ_RC_BUF_SIZE);
+	coda_write(dev, ctx->params.intra_refresh,
+		   CODA_CMD_ENC_SEQ_INTRA_REFRESH);
+
+	coda_write(dev, bitstream_buf, CODA_CMD_ENC_SEQ_BB_START);
+	coda_write(dev, bitstream_size / 1024, CODA_CMD_ENC_SEQ_BB_SIZE);
+
+
+	value = 0;
+	if (dev->devtype->product == CODA_960)
+		gamma = CODA9_DEFAULT_GAMMA;
+	else
+		gamma = CODA_DEFAULT_GAMMA;
+	if (gamma > 0) {
+		coda_write(dev, (gamma & CODA_GAMMA_MASK) << CODA_GAMMA_OFFSET,
+			   CODA_CMD_ENC_SEQ_RC_GAMMA);
+	}
+
+	if (ctx->params.h264_min_qp || ctx->params.h264_max_qp) {
+		coda_write(dev,
+			   ctx->params.h264_min_qp << CODA_QPMIN_OFFSET |
+			   ctx->params.h264_max_qp << CODA_QPMAX_OFFSET,
+			   CODA_CMD_ENC_SEQ_RC_QP_MIN_MAX);
+	}
+	if (dev->devtype->product == CODA_960) {
+		if (ctx->params.h264_max_qp)
+			value |= 1 << CODA9_OPTION_RCQPMAX_OFFSET;
+		if (CODA_DEFAULT_GAMMA > 0)
+			value |= 1 << CODA9_OPTION_GAMMA_OFFSET;
+	} else {
+		if (CODA_DEFAULT_GAMMA > 0) {
+			if (dev->devtype->product == CODA_DX6)
+				value |= 1 << CODADX6_OPTION_GAMMA_OFFSET;
+			else
+				value |= 1 << CODA7_OPTION_GAMMA_OFFSET;
+		}
+		if (ctx->params.h264_min_qp)
+			value |= 1 << CODA7_OPTION_RCQPMIN_OFFSET;
+		if (ctx->params.h264_max_qp)
+			value |= 1 << CODA7_OPTION_RCQPMAX_OFFSET;
+	}
+	coda_write(dev, value, CODA_CMD_ENC_SEQ_OPTION);
+
+	coda_write(dev, 0, CODA_CMD_ENC_SEQ_RC_INTERVAL_MODE);
+
+	coda_setup_iram(ctx);
+
+	if (dst_fourcc == V4L2_PIX_FMT_H264) {
+		switch (dev->devtype->product) {
+		case CODA_DX6:
+			value = FMO_SLICE_SAVE_BUF_SIZE << 7;
+			coda_write(dev, value, CODADX6_CMD_ENC_SEQ_FMO);
+			break;
+		case CODA_7541:
+			coda_write(dev, ctx->iram_info.search_ram_paddr,
+					CODA7_CMD_ENC_SEQ_SEARCH_BASE);
+			coda_write(dev, ctx->iram_info.search_ram_size,
+					CODA7_CMD_ENC_SEQ_SEARCH_SIZE);
+			break;
+		case CODA_960:
+			coda_write(dev, 0, CODA9_CMD_ENC_SEQ_ME_OPTION);
+			coda_write(dev, 0, CODA9_CMD_ENC_SEQ_INTRA_WEIGHT);
+		}
+	}
+
+	ret = coda_command_sync(ctx, CODA_COMMAND_SEQ_INIT);
+	if (ret < 0) {
+		v4l2_err(v4l2_dev, "CODA_COMMAND_SEQ_INIT timeout\n");
+		goto out;
+	}
+
+	if (coda_read(dev, CODA_RET_ENC_SEQ_SUCCESS) == 0) {
+		v4l2_err(v4l2_dev, "CODA_COMMAND_SEQ_INIT failed\n");
+		ret = -EFAULT;
+		goto out;
+	}
+
+	if (dev->devtype->product == CODA_960)
+		ctx->num_internal_frames = 4;
+	else
+		ctx->num_internal_frames = 2;
+	ret = coda_alloc_framebuffers(ctx, q_data_src, dst_fourcc);
+	if (ret < 0) {
+		v4l2_err(v4l2_dev, "failed to allocate framebuffers\n");
+		goto out;
+	}
+
+	coda_write(dev, ctx->num_internal_frames, CODA_CMD_SET_FRAME_BUF_NUM);
+	coda_write(dev, q_data_src->bytesperline,
+			CODA_CMD_SET_FRAME_BUF_STRIDE);
+	if (dev->devtype->product == CODA_7541) {
+		coda_write(dev, q_data_src->bytesperline,
+				CODA7_CMD_SET_FRAME_SOURCE_BUF_STRIDE);
+	}
+	if (dev->devtype->product != CODA_DX6) {
+		coda_write(dev, ctx->iram_info.buf_bit_use,
+				CODA7_CMD_SET_FRAME_AXI_BIT_ADDR);
+		coda_write(dev, ctx->iram_info.buf_ip_ac_dc_use,
+				CODA7_CMD_SET_FRAME_AXI_IPACDC_ADDR);
+		coda_write(dev, ctx->iram_info.buf_dbk_y_use,
+				CODA7_CMD_SET_FRAME_AXI_DBKY_ADDR);
+		coda_write(dev, ctx->iram_info.buf_dbk_c_use,
+				CODA7_CMD_SET_FRAME_AXI_DBKC_ADDR);
+		coda_write(dev, ctx->iram_info.buf_ovl_use,
+				CODA7_CMD_SET_FRAME_AXI_OVL_ADDR);
+		if (dev->devtype->product == CODA_960) {
+			coda_write(dev, ctx->iram_info.buf_btp_use,
+					CODA9_CMD_SET_FRAME_AXI_BTP_ADDR);
+
+			/* FIXME */
+			coda_write(dev, ctx->internal_frames[2].paddr, CODA9_CMD_SET_FRAME_SUBSAMP_A);
+			coda_write(dev, ctx->internal_frames[3].paddr, CODA9_CMD_SET_FRAME_SUBSAMP_B);
+		}
+	}
+
+	ret = coda_command_sync(ctx, CODA_COMMAND_SET_FRAME_BUF);
+	if (ret < 0) {
+		v4l2_err(v4l2_dev, "CODA_COMMAND_SET_FRAME_BUF timeout\n");
+		goto out;
+	}
+
+	/* Save stream headers */
+	buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
+	switch (dst_fourcc) {
+	case V4L2_PIX_FMT_H264:
+		/*
+		 * Get SPS in the first frame and copy it to an
+		 * intermediate buffer.
+		 */
+		ret = coda_encode_header(ctx, buf, CODA_HEADER_H264_SPS,
+					 &ctx->vpu_header[0][0],
+					 &ctx->vpu_header_size[0]);
+		if (ret < 0)
+			goto out;
+
+		/*
+		 * Get PPS in the first frame and copy it to an
+		 * intermediate buffer.
+		 */
+		ret = coda_encode_header(ctx, buf, CODA_HEADER_H264_PPS,
+					 &ctx->vpu_header[1][0],
+					 &ctx->vpu_header_size[1]);
+		if (ret < 0)
+			goto out;
+
+		/*
+		 * Length of H.264 headers is variable and thus it might not be
+		 * aligned for the coda to append the encoded frame. In that is
+		 * the case a filler NAL must be added to header 2.
+		 */
+		ctx->vpu_header_size[2] = coda_h264_padding(
+					(ctx->vpu_header_size[0] +
+					 ctx->vpu_header_size[1]),
+					 ctx->vpu_header[2]);
+		break;
+	case V4L2_PIX_FMT_MPEG4:
+		/*
+		 * Get VOS in the first frame and copy it to an
+		 * intermediate buffer
+		 */
+		ret = coda_encode_header(ctx, buf, CODA_HEADER_MP4V_VOS,
+					 &ctx->vpu_header[0][0],
+					 &ctx->vpu_header_size[0]);
+		if (ret < 0)
+			goto out;
+
+		ret = coda_encode_header(ctx, buf, CODA_HEADER_MP4V_VIS,
+					 &ctx->vpu_header[1][0],
+					 &ctx->vpu_header_size[1]);
+		if (ret < 0)
+			goto out;
+
+		ret = coda_encode_header(ctx, buf, CODA_HEADER_MP4V_VOL,
+					 &ctx->vpu_header[2][0],
+					 &ctx->vpu_header_size[2]);
+		if (ret < 0)
+			goto out;
+		break;
+	default:
+		/* No more formats need to save headers at the moment */
+		break;
+	}
+
+out:
+	mutex_unlock(&dev->coda_mutex);
+	return ret;
+}
+
+static int coda_prepare_encode(struct coda_ctx *ctx)
+{
+	struct coda_q_data *q_data_src, *q_data_dst;
+	struct vb2_buffer *src_buf, *dst_buf;
+	struct coda_dev *dev = ctx->dev;
+	int force_ipicture;
+	int quant_param = 0;
+	u32 picture_y, picture_cb, picture_cr;
+	u32 pic_stream_buffer_addr, pic_stream_buffer_size;
+	u32 dst_fourcc;
+
+	src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
+	dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
+	q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
+	q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
+	dst_fourcc = q_data_dst->fourcc;
+
+	src_buf->v4l2_buf.sequence = ctx->osequence;
+	dst_buf->v4l2_buf.sequence = ctx->osequence;
+	ctx->osequence++;
+
+	/*
+	 * Workaround coda firmware BUG that only marks the first
+	 * frame as IDR. This is a problem for some decoders that can't
+	 * recover when a frame is lost.
+	 */
+	if (src_buf->v4l2_buf.sequence % ctx->params.gop_size) {
+		src_buf->v4l2_buf.flags |= V4L2_BUF_FLAG_PFRAME;
+		src_buf->v4l2_buf.flags &= ~V4L2_BUF_FLAG_KEYFRAME;
+	} else {
+		src_buf->v4l2_buf.flags |= V4L2_BUF_FLAG_KEYFRAME;
+		src_buf->v4l2_buf.flags &= ~V4L2_BUF_FLAG_PFRAME;
+	}
+
+	if (dev->devtype->product == CODA_960)
+		coda_set_gdi_regs(ctx);
+
+	/*
+	 * Copy headers at the beginning of the first frame for H.264 only.
+	 * In MPEG4 they are already copied by the coda.
+	 */
+	if (src_buf->v4l2_buf.sequence == 0) {
+		pic_stream_buffer_addr =
+			vb2_dma_contig_plane_dma_addr(dst_buf, 0) +
+			ctx->vpu_header_size[0] +
+			ctx->vpu_header_size[1] +
+			ctx->vpu_header_size[2];
+		pic_stream_buffer_size = CODA_MAX_FRAME_SIZE -
+			ctx->vpu_header_size[0] -
+			ctx->vpu_header_size[1] -
+			ctx->vpu_header_size[2];
+		memcpy(vb2_plane_vaddr(dst_buf, 0),
+		       &ctx->vpu_header[0][0], ctx->vpu_header_size[0]);
+		memcpy(vb2_plane_vaddr(dst_buf, 0) + ctx->vpu_header_size[0],
+		       &ctx->vpu_header[1][0], ctx->vpu_header_size[1]);
+		memcpy(vb2_plane_vaddr(dst_buf, 0) + ctx->vpu_header_size[0] +
+			ctx->vpu_header_size[1], &ctx->vpu_header[2][0],
+			ctx->vpu_header_size[2]);
+	} else {
+		pic_stream_buffer_addr =
+			vb2_dma_contig_plane_dma_addr(dst_buf, 0);
+		pic_stream_buffer_size = CODA_MAX_FRAME_SIZE;
+	}
+
+	if (src_buf->v4l2_buf.flags & V4L2_BUF_FLAG_KEYFRAME) {
+		force_ipicture = 1;
+		switch (dst_fourcc) {
+		case V4L2_PIX_FMT_H264:
+			quant_param = ctx->params.h264_intra_qp;
+			break;
+		case V4L2_PIX_FMT_MPEG4:
+			quant_param = ctx->params.mpeg4_intra_qp;
+			break;
+		default:
+			v4l2_warn(&ctx->dev->v4l2_dev,
+				"cannot set intra qp, fmt not supported\n");
+			break;
+		}
+	} else {
+		force_ipicture = 0;
+		switch (dst_fourcc) {
+		case V4L2_PIX_FMT_H264:
+			quant_param = ctx->params.h264_inter_qp;
+			break;
+		case V4L2_PIX_FMT_MPEG4:
+			quant_param = ctx->params.mpeg4_inter_qp;
+			break;
+		default:
+			v4l2_warn(&ctx->dev->v4l2_dev,
+				"cannot set inter qp, fmt not supported\n");
+			break;
+		}
+	}
+
+	/* submit */
+	coda_write(dev, CODA_ROT_MIR_ENABLE | ctx->params.rot_mode, CODA_CMD_ENC_PIC_ROT_MODE);
+	coda_write(dev, quant_param, CODA_CMD_ENC_PIC_QS);
+
+
+	picture_y = vb2_dma_contig_plane_dma_addr(src_buf, 0);
+	switch (q_data_src->fourcc) {
+	case V4L2_PIX_FMT_YVU420:
+		/* Switch Cb and Cr for YVU420 format */
+		picture_cr = picture_y + q_data_src->bytesperline *
+				q_data_src->height;
+		picture_cb = picture_cr + q_data_src->bytesperline / 2 *
+				q_data_src->height / 2;
+		break;
+	case V4L2_PIX_FMT_YUV420:
+	default:
+		picture_cb = picture_y + q_data_src->bytesperline *
+				q_data_src->height;
+		picture_cr = picture_cb + q_data_src->bytesperline / 2 *
+				q_data_src->height / 2;
+		break;
+	}
+
+	if (dev->devtype->product == CODA_960) {
+		coda_write(dev, 4/*FIXME: 0*/, CODA9_CMD_ENC_PIC_SRC_INDEX);
+		coda_write(dev, q_data_src->width, CODA9_CMD_ENC_PIC_SRC_STRIDE);
+		coda_write(dev, 0, CODA9_CMD_ENC_PIC_SUB_FRAME_SYNC);
+
+		coda_write(dev, picture_y, CODA9_CMD_ENC_PIC_SRC_ADDR_Y);
+		coda_write(dev, picture_cb, CODA9_CMD_ENC_PIC_SRC_ADDR_CB);
+		coda_write(dev, picture_cr, CODA9_CMD_ENC_PIC_SRC_ADDR_CR);
+	} else {
+		coda_write(dev, picture_y, CODA_CMD_ENC_PIC_SRC_ADDR_Y);
+		coda_write(dev, picture_cb, CODA_CMD_ENC_PIC_SRC_ADDR_CB);
+		coda_write(dev, picture_cr, CODA_CMD_ENC_PIC_SRC_ADDR_CR);
+	}
+	coda_write(dev, force_ipicture << 1 & 0x2,
+		   CODA_CMD_ENC_PIC_OPTION);
+
+	coda_write(dev, pic_stream_buffer_addr, CODA_CMD_ENC_PIC_BB_START);
+	coda_write(dev, pic_stream_buffer_size / 1024,
+		   CODA_CMD_ENC_PIC_BB_SIZE);
+
+	if (!ctx->streamon_out) {
+		/* After streamoff on the output side, set the stream end flag */
+		ctx->bit_stream_param |= CODA_BIT_STREAM_END_FLAG;
+		coda_write(dev, ctx->bit_stream_param, CODA_REG_BIT_BIT_STREAM_PARAM);
+	}
+
+	if (dev->devtype->product != CODA_DX6)
+		coda_write(dev, ctx->iram_info.axi_sram_use,
+				CODA7_REG_BIT_AXI_SRAM_USE);
+
+	coda_command_async(ctx, CODA_COMMAND_PIC_RUN);
+
+	return 0;
+}
+
+static void coda_finish_encode(struct coda_ctx *ctx)
+{
+	struct vb2_buffer *src_buf, *dst_buf;
+	struct coda_dev *dev = ctx->dev;
+	u32 wr_ptr, start_ptr;
+
+	src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
+	dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
+
+	/* Get results from the coda */
+	start_ptr = coda_read(dev, CODA_CMD_ENC_PIC_BB_START);
+	wr_ptr = coda_read(dev, CODA_REG_BIT_WR_PTR(ctx->reg_idx));
+
+	/* Calculate bytesused field */
+	if (dst_buf->v4l2_buf.sequence == 0) {
+		vb2_set_plane_payload(dst_buf, 0, wr_ptr - start_ptr +
+					ctx->vpu_header_size[0] +
+					ctx->vpu_header_size[1] +
+					ctx->vpu_header_size[2]);
+	} else {
+		vb2_set_plane_payload(dst_buf, 0, wr_ptr - start_ptr);
+	}
+
+	v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev, "frame size = %u\n",
+		 wr_ptr - start_ptr);
+
+	coda_read(dev, CODA_RET_ENC_PIC_SLICE_NUM);
+	coda_read(dev, CODA_RET_ENC_PIC_FLAG);
+
+	if (coda_read(dev, CODA_RET_ENC_PIC_TYPE) == 0) {
+		dst_buf->v4l2_buf.flags |= V4L2_BUF_FLAG_KEYFRAME;
+		dst_buf->v4l2_buf.flags &= ~V4L2_BUF_FLAG_PFRAME;
+	} else {
+		dst_buf->v4l2_buf.flags |= V4L2_BUF_FLAG_PFRAME;
+		dst_buf->v4l2_buf.flags &= ~V4L2_BUF_FLAG_KEYFRAME;
+	}
+
+	dst_buf->v4l2_buf.timestamp = src_buf->v4l2_buf.timestamp;
+	dst_buf->v4l2_buf.flags &= ~V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
+	dst_buf->v4l2_buf.flags |=
+		src_buf->v4l2_buf.flags & V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
+	dst_buf->v4l2_buf.timecode = src_buf->v4l2_buf.timecode;
+
+	v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
+
+	dst_buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
+	v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE);
+
+	ctx->gopcounter--;
+	if (ctx->gopcounter < 0)
+		ctx->gopcounter = ctx->params.gop_size - 1;
+
+	v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
+		"job finished: encoding frame (%d) (%s)\n",
+		dst_buf->v4l2_buf.sequence,
+		(dst_buf->v4l2_buf.flags & V4L2_BUF_FLAG_KEYFRAME) ?
+		"KEYFRAME" : "PFRAME");
+}
+
+static void coda_seq_end_work(struct work_struct *work)
+{
+	struct coda_ctx *ctx = container_of(work, struct coda_ctx, seq_end_work);
+	struct coda_dev *dev = ctx->dev;
+
+	mutex_lock(&ctx->buffer_mutex);
+	mutex_lock(&dev->coda_mutex);
+
+	v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
+		 "%d: %s: sent command 'SEQ_END' to coda\n", ctx->idx, __func__);
+	if (coda_command_sync(ctx, CODA_COMMAND_SEQ_END)) {
+		v4l2_err(&dev->v4l2_dev,
+			 "CODA_COMMAND_SEQ_END failed\n");
+	}
+
+	kfifo_init(&ctx->bitstream_fifo,
+		ctx->bitstream.vaddr, ctx->bitstream.size);
+
+	coda_free_framebuffers(ctx);
+	coda_free_context_buffers(ctx);
+
+	mutex_unlock(&dev->coda_mutex);
+	mutex_unlock(&ctx->buffer_mutex);
+}
+
+static void coda_bit_release(struct coda_ctx *ctx)
+{
+	coda_free_framebuffers(ctx);
+	coda_free_context_buffers(ctx);
+}
+
+const struct coda_context_ops coda_bit_encode_ops = {
+	.queue_init = coda_encoder_queue_init,
+	.start_streaming = coda_start_encoding,
+	.prepare_run = coda_prepare_encode,
+	.finish_run = coda_finish_encode,
+	.seq_end_work = coda_seq_end_work,
+	.release = coda_bit_release,
+};
+
+/*
+ * Decoder context operations
+ */
+
+static int __coda_start_decoding(struct coda_ctx *ctx)
+{
+	struct coda_q_data *q_data_src, *q_data_dst;
+	u32 bitstream_buf, bitstream_size;
+	struct coda_dev *dev = ctx->dev;
+	int width, height;
+	u32 src_fourcc;
+	u32 val;
+	int ret;
+
+	/* Start decoding */
+	q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
+	q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
+	bitstream_buf = ctx->bitstream.paddr;
+	bitstream_size = ctx->bitstream.size;
+	src_fourcc = q_data_src->fourcc;
+
+	/* Allocate per-instance buffers */
+	ret = coda_alloc_context_buffers(ctx, q_data_src);
+	if (ret < 0)
+		return ret;
+
+	coda_write(dev, ctx->parabuf.paddr, CODA_REG_BIT_PARA_BUF_ADDR);
+
+	/* Update coda bitstream read and write pointers from kfifo */
+	coda_kfifo_sync_to_device_full(ctx);
+
+	ctx->display_idx = -1;
+	ctx->frm_dis_flg = 0;
+	coda_write(dev, 0, CODA_REG_BIT_FRM_DIS_FLG(ctx->reg_idx));
+
+	coda_write(dev, CODA_BIT_DEC_SEQ_INIT_ESCAPE,
+			CODA_REG_BIT_BIT_STREAM_PARAM);
+
+	coda_write(dev, bitstream_buf, CODA_CMD_DEC_SEQ_BB_START);
+	coda_write(dev, bitstream_size / 1024, CODA_CMD_DEC_SEQ_BB_SIZE);
+	val = 0;
+	if ((dev->devtype->product == CODA_7541) ||
+	    (dev->devtype->product == CODA_960))
+		val |= CODA_REORDER_ENABLE;
+	coda_write(dev, val, CODA_CMD_DEC_SEQ_OPTION);
+
+	ctx->params.codec_mode = ctx->codec->mode;
+	if (dev->devtype->product == CODA_960 &&
+	    src_fourcc == V4L2_PIX_FMT_MPEG4)
+		ctx->params.codec_mode_aux = CODA_MP4_AUX_MPEG4;
+	else
+		ctx->params.codec_mode_aux = 0;
+	if (src_fourcc == V4L2_PIX_FMT_H264) {
+		if (dev->devtype->product == CODA_7541) {
+			coda_write(dev, ctx->psbuf.paddr,
+					CODA_CMD_DEC_SEQ_PS_BB_START);
+			coda_write(dev, (CODA7_PS_BUF_SIZE / 1024),
+					CODA_CMD_DEC_SEQ_PS_BB_SIZE);
+		}
+		if (dev->devtype->product == CODA_960) {
+			coda_write(dev, 0, CODA_CMD_DEC_SEQ_X264_MV_EN);
+			coda_write(dev, 512, CODA_CMD_DEC_SEQ_SPP_CHUNK_SIZE);
+		}
+	}
+	if (dev->devtype->product != CODA_960)
+		coda_write(dev, 0, CODA_CMD_DEC_SEQ_SRC_SIZE);
+
+	if (coda_command_sync(ctx, CODA_COMMAND_SEQ_INIT)) {
+		v4l2_err(&dev->v4l2_dev, "CODA_COMMAND_SEQ_INIT timeout\n");
+		coda_write(dev, 0, CODA_REG_BIT_BIT_STREAM_PARAM);
+		return -ETIMEDOUT;
+	}
+
+	/* Update kfifo out pointer from coda bitstream read pointer */
+	coda_kfifo_sync_from_device(ctx);
+
+	coda_write(dev, 0, CODA_REG_BIT_BIT_STREAM_PARAM);
+
+	if (coda_read(dev, CODA_RET_DEC_SEQ_SUCCESS) == 0) {
+		v4l2_err(&dev->v4l2_dev,
+			"CODA_COMMAND_SEQ_INIT failed, error code = %d\n",
+			coda_read(dev, CODA_RET_DEC_SEQ_ERR_REASON));
+		return -EAGAIN;
+	}
+
+	val = coda_read(dev, CODA_RET_DEC_SEQ_SRC_SIZE);
+	if (dev->devtype->product == CODA_DX6) {
+		width = (val >> CODADX6_PICWIDTH_OFFSET) & CODADX6_PICWIDTH_MASK;
+		height = val & CODADX6_PICHEIGHT_MASK;
+	} else {
+		width = (val >> CODA7_PICWIDTH_OFFSET) & CODA7_PICWIDTH_MASK;
+		height = val & CODA7_PICHEIGHT_MASK;
+	}
+
+	if (width > q_data_dst->width || height > q_data_dst->height) {
+		v4l2_err(&dev->v4l2_dev, "stream is %dx%d, not %dx%d\n",
+			 width, height, q_data_dst->width, q_data_dst->height);
+		return -EINVAL;
+	}
+
+	width = round_up(width, 16);
+	height = round_up(height, 16);
+
+	v4l2_dbg(1, coda_debug, &dev->v4l2_dev, "%s instance %d now: %dx%d\n",
+		 __func__, ctx->idx, width, height);
+
+	ctx->num_internal_frames = coda_read(dev, CODA_RET_DEC_SEQ_FRAME_NEED);
+	if (ctx->num_internal_frames > CODA_MAX_FRAMEBUFFERS) {
+		v4l2_err(&dev->v4l2_dev,
+			 "not enough framebuffers to decode (%d < %d)\n",
+			 CODA_MAX_FRAMEBUFFERS, ctx->num_internal_frames);
+		return -EINVAL;
+	}
+
+	if (src_fourcc == V4L2_PIX_FMT_H264) {
+		u32 left_right;
+		u32 top_bottom;
+
+		left_right = coda_read(dev, CODA_RET_DEC_SEQ_CROP_LEFT_RIGHT);
+		top_bottom = coda_read(dev, CODA_RET_DEC_SEQ_CROP_TOP_BOTTOM);
+
+		q_data_dst->rect.left = (left_right >> 10) & 0x3ff;
+		q_data_dst->rect.top = (top_bottom >> 10) & 0x3ff;
+		q_data_dst->rect.width = width - q_data_dst->rect.left -
+					 (left_right & 0x3ff);
+		q_data_dst->rect.height = height - q_data_dst->rect.top -
+					  (top_bottom & 0x3ff);
+	}
+
+	ret = coda_alloc_framebuffers(ctx, q_data_dst, src_fourcc);
+	if (ret < 0)
+		return ret;
+
+	/* Tell the decoder how many frame buffers we allocated. */
+	coda_write(dev, ctx->num_internal_frames, CODA_CMD_SET_FRAME_BUF_NUM);
+	coda_write(dev, width, CODA_CMD_SET_FRAME_BUF_STRIDE);
+
+	if (dev->devtype->product != CODA_DX6) {
+		/* Set secondary AXI IRAM */
+		coda_setup_iram(ctx);
+
+		coda_write(dev, ctx->iram_info.buf_bit_use,
+				CODA7_CMD_SET_FRAME_AXI_BIT_ADDR);
+		coda_write(dev, ctx->iram_info.buf_ip_ac_dc_use,
+				CODA7_CMD_SET_FRAME_AXI_IPACDC_ADDR);
+		coda_write(dev, ctx->iram_info.buf_dbk_y_use,
+				CODA7_CMD_SET_FRAME_AXI_DBKY_ADDR);
+		coda_write(dev, ctx->iram_info.buf_dbk_c_use,
+				CODA7_CMD_SET_FRAME_AXI_DBKC_ADDR);
+		coda_write(dev, ctx->iram_info.buf_ovl_use,
+				CODA7_CMD_SET_FRAME_AXI_OVL_ADDR);
+		if (dev->devtype->product == CODA_960)
+			coda_write(dev, ctx->iram_info.buf_btp_use,
+					CODA9_CMD_SET_FRAME_AXI_BTP_ADDR);
+	}
+
+	if (dev->devtype->product == CODA_960) {
+		coda_write(dev, -1, CODA9_CMD_SET_FRAME_DELAY);
+
+		coda_write(dev, 0x20262024, CODA9_CMD_SET_FRAME_CACHE_SIZE);
+		coda_write(dev, 2 << CODA9_CACHE_PAGEMERGE_OFFSET |
+				32 << CODA9_CACHE_LUMA_BUFFER_SIZE_OFFSET |
+				8 << CODA9_CACHE_CB_BUFFER_SIZE_OFFSET |
+				8 << CODA9_CACHE_CR_BUFFER_SIZE_OFFSET,
+				CODA9_CMD_SET_FRAME_CACHE_CONFIG);
+	}
+
+	if (src_fourcc == V4L2_PIX_FMT_H264) {
+		coda_write(dev, ctx->slicebuf.paddr,
+				CODA_CMD_SET_FRAME_SLICE_BB_START);
+		coda_write(dev, ctx->slicebuf.size / 1024,
+				CODA_CMD_SET_FRAME_SLICE_BB_SIZE);
+	}
+
+	if (dev->devtype->product == CODA_7541) {
+		int max_mb_x = 1920 / 16;
+		int max_mb_y = 1088 / 16;
+		int max_mb_num = max_mb_x * max_mb_y;
+
+		coda_write(dev, max_mb_num << 16 | max_mb_x << 8 | max_mb_y,
+				CODA7_CMD_SET_FRAME_MAX_DEC_SIZE);
+	} else if (dev->devtype->product == CODA_960) {
+		int max_mb_x = 1920 / 16;
+		int max_mb_y = 1088 / 16;
+		int max_mb_num = max_mb_x * max_mb_y;
+
+		coda_write(dev, max_mb_num << 16 | max_mb_x << 8 | max_mb_y,
+				CODA9_CMD_SET_FRAME_MAX_DEC_SIZE);
+	}
+
+	if (coda_command_sync(ctx, CODA_COMMAND_SET_FRAME_BUF)) {
+		v4l2_err(&ctx->dev->v4l2_dev,
+			 "CODA_COMMAND_SET_FRAME_BUF timeout\n");
+		return -ETIMEDOUT;
+	}
+
+	return 0;
+}
+
+static int coda_start_decoding(struct coda_ctx *ctx)
+{
+	struct coda_dev *dev = ctx->dev;
+	int ret;
+
+	mutex_lock(&dev->coda_mutex);
+	ret = __coda_start_decoding(ctx);
+	mutex_unlock(&dev->coda_mutex);
+
+	return ret;
+}
+
+static int coda_prepare_decode(struct coda_ctx *ctx)
+{
+	struct vb2_buffer *dst_buf;
+	struct coda_dev *dev = ctx->dev;
+	struct coda_q_data *q_data_dst;
+	u32 stridey, height;
+	u32 picture_y, picture_cb, picture_cr;
+
+	dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
+	q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
+
+	if (ctx->params.rot_mode & CODA_ROT_90) {
+		stridey = q_data_dst->height;
+		height = q_data_dst->width;
+	} else {
+		stridey = q_data_dst->width;
+		height = q_data_dst->height;
+	}
+
+	/* Try to copy source buffer contents into the bitstream ringbuffer */
+	mutex_lock(&ctx->bitstream_mutex);
+	coda_fill_bitstream(ctx);
+	mutex_unlock(&ctx->bitstream_mutex);
+
+	if (coda_get_bitstream_payload(ctx) < 512 &&
+	    (!(ctx->bit_stream_param & CODA_BIT_STREAM_END_FLAG))) {
+		v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
+			 "bitstream payload: %d, skipping\n",
+			 coda_get_bitstream_payload(ctx));
+		v4l2_m2m_job_finish(ctx->dev->m2m_dev, ctx->fh.m2m_ctx);
+		return -EAGAIN;
+	}
+
+	/* Run coda_start_decoding (again) if not yet initialized */
+	if (!ctx->initialized) {
+		int ret = __coda_start_decoding(ctx);
+
+		if (ret < 0) {
+			v4l2_err(&dev->v4l2_dev, "failed to start decoding\n");
+			v4l2_m2m_job_finish(ctx->dev->m2m_dev, ctx->fh.m2m_ctx);
+			return -EAGAIN;
+		} else {
+			ctx->initialized = 1;
+		}
+	}
+
+	if (dev->devtype->product == CODA_960)
+		coda_set_gdi_regs(ctx);
+
+	/* Set rotator output */
+	picture_y = vb2_dma_contig_plane_dma_addr(dst_buf, 0);
+	if (q_data_dst->fourcc == V4L2_PIX_FMT_YVU420) {
+		/* Switch Cr and Cb for YVU420 format */
+		picture_cr = picture_y + stridey * height;
+		picture_cb = picture_cr + stridey / 2 * height / 2;
+	} else {
+		picture_cb = picture_y + stridey * height;
+		picture_cr = picture_cb + stridey / 2 * height / 2;
+	}
+
+	if (dev->devtype->product == CODA_960) {
+		/*
+		 * The CODA960 seems to have an internal list of buffers with
+		 * 64 entries that includes the registered frame buffers as
+		 * well as the rotator buffer output.
+		 * ROT_INDEX needs to be < 0x40, but > ctx->num_internal_frames.
+		 */
+		coda_write(dev, CODA_MAX_FRAMEBUFFERS + dst_buf->v4l2_buf.index,
+				CODA9_CMD_DEC_PIC_ROT_INDEX);
+		coda_write(dev, picture_y, CODA9_CMD_DEC_PIC_ROT_ADDR_Y);
+		coda_write(dev, picture_cb, CODA9_CMD_DEC_PIC_ROT_ADDR_CB);
+		coda_write(dev, picture_cr, CODA9_CMD_DEC_PIC_ROT_ADDR_CR);
+		coda_write(dev, stridey, CODA9_CMD_DEC_PIC_ROT_STRIDE);
+	} else {
+		coda_write(dev, picture_y, CODA_CMD_DEC_PIC_ROT_ADDR_Y);
+		coda_write(dev, picture_cb, CODA_CMD_DEC_PIC_ROT_ADDR_CB);
+		coda_write(dev, picture_cr, CODA_CMD_DEC_PIC_ROT_ADDR_CR);
+		coda_write(dev, stridey, CODA_CMD_DEC_PIC_ROT_STRIDE);
+	}
+	coda_write(dev, CODA_ROT_MIR_ENABLE | ctx->params.rot_mode,
+			CODA_CMD_DEC_PIC_ROT_MODE);
+
+	switch (dev->devtype->product) {
+	case CODA_DX6:
+		/* TBD */
+	case CODA_7541:
+		coda_write(dev, CODA_PRE_SCAN_EN, CODA_CMD_DEC_PIC_OPTION);
+		break;
+	case CODA_960:
+		coda_write(dev, (1 << 10), CODA_CMD_DEC_PIC_OPTION); /* 'hardcode to use interrupt disable mode'? */
+		break;
+	}
+
+	coda_write(dev, 0, CODA_CMD_DEC_PIC_SKIP_NUM);
+
+	coda_write(dev, 0, CODA_CMD_DEC_PIC_BB_START);
+	coda_write(dev, 0, CODA_CMD_DEC_PIC_START_BYTE);
+
+	if (dev->devtype->product != CODA_DX6)
+		coda_write(dev, ctx->iram_info.axi_sram_use,
+				CODA7_REG_BIT_AXI_SRAM_USE);
+
+	coda_kfifo_sync_to_device_full(ctx);
+
+	coda_command_async(ctx, CODA_COMMAND_PIC_RUN);
+
+	return 0;
+}
+
+static void coda_finish_decode(struct coda_ctx *ctx)
+{
+	struct coda_dev *dev = ctx->dev;
+	struct coda_q_data *q_data_src;
+	struct coda_q_data *q_data_dst;
+	struct vb2_buffer *dst_buf;
+	struct coda_timestamp *ts;
+	int width, height;
+	int decoded_idx;
+	int display_idx;
+	u32 src_fourcc;
+	int success;
+	u32 err_mb;
+	u32 val;
+
+	dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
+
+	/* Update kfifo out pointer from coda bitstream read pointer */
+	coda_kfifo_sync_from_device(ctx);
+
+	/*
+	 * in stream-end mode, the read pointer can overshoot the write pointer
+	 * by up to 512 bytes
+	 */
+	if (ctx->bit_stream_param & CODA_BIT_STREAM_END_FLAG) {
+		if (coda_get_bitstream_payload(ctx) >= CODA_MAX_FRAME_SIZE - 512)
+			kfifo_init(&ctx->bitstream_fifo,
+				ctx->bitstream.vaddr, ctx->bitstream.size);
+	}
+
+	q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
+	src_fourcc = q_data_src->fourcc;
+
+	val = coda_read(dev, CODA_RET_DEC_PIC_SUCCESS);
+	if (val != 1)
+		pr_err("DEC_PIC_SUCCESS = %d\n", val);
+
+	success = val & 0x1;
+	if (!success)
+		v4l2_err(&dev->v4l2_dev, "decode failed\n");
+
+	if (src_fourcc == V4L2_PIX_FMT_H264) {
+		if (val & (1 << 3))
+			v4l2_err(&dev->v4l2_dev,
+				 "insufficient PS buffer space (%d bytes)\n",
+				 ctx->psbuf.size);
+		if (val & (1 << 2))
+			v4l2_err(&dev->v4l2_dev,
+				 "insufficient slice buffer space (%d bytes)\n",
+				 ctx->slicebuf.size);
+	}
+
+	val = coda_read(dev, CODA_RET_DEC_PIC_SIZE);
+	width = (val >> 16) & 0xffff;
+	height = val & 0xffff;
+
+	q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
+
+	/* frame crop information */
+	if (src_fourcc == V4L2_PIX_FMT_H264) {
+		u32 left_right;
+		u32 top_bottom;
+
+		left_right = coda_read(dev, CODA_RET_DEC_PIC_CROP_LEFT_RIGHT);
+		top_bottom = coda_read(dev, CODA_RET_DEC_PIC_CROP_TOP_BOTTOM);
+
+		if (left_right == 0xffffffff && top_bottom == 0xffffffff) {
+			/* Keep current crop information */
+		} else {
+			struct v4l2_rect *rect = &q_data_dst->rect;
+
+			rect->left = left_right >> 16 & 0xffff;
+			rect->top = top_bottom >> 16 & 0xffff;
+			rect->width = width - rect->left -
+				      (left_right & 0xffff);
+			rect->height = height - rect->top -
+				       (top_bottom & 0xffff);
+		}
+	} else {
+		/* no cropping */
+	}
+
+	err_mb = coda_read(dev, CODA_RET_DEC_PIC_ERR_MB);
+	if (err_mb > 0)
+		v4l2_err(&dev->v4l2_dev,
+			 "errors in %d macroblocks\n", err_mb);
+
+	if (dev->devtype->product == CODA_7541) {
+		val = coda_read(dev, CODA_RET_DEC_PIC_OPTION);
+		if (val == 0) {
+			/* not enough bitstream data */
+			v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
+				 "prescan failed: %d\n", val);
+			ctx->hold = true;
+			return;
+		}
+	}
+
+	ctx->frm_dis_flg = coda_read(dev, CODA_REG_BIT_FRM_DIS_FLG(ctx->reg_idx));
+
+	/*
+	 * The previous display frame was copied out by the rotator,
+	 * now it can be overwritten again
+	 */
+	if (ctx->display_idx >= 0 &&
+	    ctx->display_idx < ctx->num_internal_frames) {
+		ctx->frm_dis_flg &= ~(1 << ctx->display_idx);
+		coda_write(dev, ctx->frm_dis_flg,
+				CODA_REG_BIT_FRM_DIS_FLG(ctx->reg_idx));
+	}
+
+	/*
+	 * The index of the last decoded frame, not necessarily in
+	 * display order, and the index of the next display frame.
+	 * The latter could have been decoded in a previous run.
+	 */
+	decoded_idx = coda_read(dev, CODA_RET_DEC_PIC_CUR_IDX);
+	display_idx = coda_read(dev, CODA_RET_DEC_PIC_FRAME_IDX);
+
+	if (decoded_idx == -1) {
+		/* no frame was decoded, but we might have a display frame */
+		if (display_idx >= 0 && display_idx < ctx->num_internal_frames)
+			ctx->sequence_offset++;
+		else if (ctx->display_idx < 0)
+			ctx->hold = true;
+	} else if (decoded_idx == -2) {
+		/* no frame was decoded, we still return the remaining buffers */
+	} else if (decoded_idx < 0 || decoded_idx >= ctx->num_internal_frames) {
+		v4l2_err(&dev->v4l2_dev,
+			 "decoded frame index out of range: %d\n", decoded_idx);
+	} else {
+		ts = list_first_entry(&ctx->timestamp_list,
+				      struct coda_timestamp, list);
+		list_del(&ts->list);
+		val = coda_read(dev, CODA_RET_DEC_PIC_FRAME_NUM) - 1;
+		val -= ctx->sequence_offset;
+		if (val != (ts->sequence & 0xffff)) {
+			v4l2_err(&dev->v4l2_dev,
+				 "sequence number mismatch (%d(%d) != %d)\n",
+				 val, ctx->sequence_offset, ts->sequence);
+		}
+		ctx->frame_timestamps[decoded_idx] = *ts;
+		kfree(ts);
+
+		val = coda_read(dev, CODA_RET_DEC_PIC_TYPE) & 0x7;
+		if (val == 0)
+			ctx->frame_types[decoded_idx] = V4L2_BUF_FLAG_KEYFRAME;
+		else if (val == 1)
+			ctx->frame_types[decoded_idx] = V4L2_BUF_FLAG_PFRAME;
+		else
+			ctx->frame_types[decoded_idx] = V4L2_BUF_FLAG_BFRAME;
+
+		ctx->frame_errors[decoded_idx] = err_mb;
+	}
+
+	if (display_idx == -1) {
+		/*
+		 * no more frames to be decoded, but there could still
+		 * be rotator output to dequeue
+		 */
+		ctx->hold = true;
+	} else if (display_idx == -3) {
+		/* possibly prescan failure */
+	} else if (display_idx < 0 || display_idx >= ctx->num_internal_frames) {
+		v4l2_err(&dev->v4l2_dev,
+			 "presentation frame index out of range: %d\n",
+			 display_idx);
+	}
+
+	/* If a frame was copied out, return it */
+	if (ctx->display_idx >= 0 &&
+	    ctx->display_idx < ctx->num_internal_frames) {
+		dst_buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
+		dst_buf->v4l2_buf.sequence = ctx->osequence++;
+
+		dst_buf->v4l2_buf.flags &= ~(V4L2_BUF_FLAG_KEYFRAME |
+					     V4L2_BUF_FLAG_PFRAME |
+					     V4L2_BUF_FLAG_BFRAME);
+		dst_buf->v4l2_buf.flags |= ctx->frame_types[ctx->display_idx];
+		ts = &ctx->frame_timestamps[ctx->display_idx];
+		dst_buf->v4l2_buf.timecode = ts->timecode;
+		dst_buf->v4l2_buf.timestamp = ts->timestamp;
+
+		vb2_set_plane_payload(dst_buf, 0, width * height * 3 / 2);
+
+		v4l2_m2m_buf_done(dst_buf, ctx->frame_errors[display_idx] ?
+				  VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE);
+
+		v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
+			"job finished: decoding frame (%d) (%s)\n",
+			dst_buf->v4l2_buf.sequence,
+			(dst_buf->v4l2_buf.flags & V4L2_BUF_FLAG_KEYFRAME) ?
+			"KEYFRAME" : "PFRAME");
+	} else {
+		v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
+			"job finished: no frame decoded\n");
+	}
+
+	/* The rotator will copy the current display frame next time */
+	ctx->display_idx = display_idx;
+}
+
+const struct coda_context_ops coda_bit_decode_ops = {
+	.queue_init = coda_decoder_queue_init,
+	.start_streaming = coda_start_decoding,
+	.prepare_run = coda_prepare_decode,
+	.finish_run = coda_finish_decode,
+	.seq_end_work = coda_seq_end_work,
+	.release = coda_bit_release,
+};
+
+irqreturn_t coda_irq_handler(int irq, void *data)
+{
+	struct coda_dev *dev = data;
+	struct coda_ctx *ctx;
+
+	/* read status register to attend the IRQ */
+	coda_read(dev, CODA_REG_BIT_INT_STATUS);
+	coda_write(dev, CODA_REG_BIT_INT_CLEAR_SET,
+		      CODA_REG_BIT_INT_CLEAR);
+
+	ctx = v4l2_m2m_get_curr_priv(dev->m2m_dev);
+	if (ctx == NULL) {
+		v4l2_err(&dev->v4l2_dev, "Instance released before the end of transaction\n");
+		mutex_unlock(&dev->coda_mutex);
+		return IRQ_HANDLED;
+	}
+
+	if (ctx->aborting) {
+		v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
+			 "task has been aborted\n");
+	}
+
+	if (coda_isbusy(ctx->dev)) {
+		v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
+			 "coda is still busy!!!!\n");
+		return IRQ_NONE;
+	}
+
+	complete(&ctx->completion);
+
+	return IRQ_HANDLED;
+}

drivers/media/platform/coda/coda-common.c

···
 #define CODA_PARA_BUF_SIZE	(10 * 1024)
 #define CODA_ISRAM_SIZE	(2048 * 2)
 
-#define CODA7_PS_BUF_SIZE	0x28000
-#define CODA9_PS_SAVE_SIZE	(512 * 1024)
-
-#define CODA_DEFAULT_GAMMA		4096
-#define CODA9_DEFAULT_GAMMA		24576	/* 0.75 * 32768 */
-
 #define MIN_W 176
 #define MIN_H 144
 
···
 
 #define fh_to_ctx(__fh)	container_of(__fh, struct coda_ctx, fh)
 
-static int coda_debug;
+int coda_debug;
 module_param(coda_debug, int, 0644);
 MODULE_PARM_DESC(coda_debug, "Debug level (0-1)");
 
···
 	v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
 		 "%s: data=0x%x, reg=0x%x\n", __func__, data, reg);
 	return data;
-}
-
-static inline unsigned long coda_isbusy(struct coda_dev *dev)
-{
-	return coda_read(dev, CODA_REG_BIT_BUSY);
-}
-
-static inline int coda_is_initialized(struct coda_dev *dev)
-{
-	return (coda_read(dev, CODA_REG_BIT_CUR_PC) != 0);
-}
-
-static int coda_wait_timeout(struct coda_dev *dev)
-{
-	unsigned long timeout = jiffies + msecs_to_jiffies(1000);
-
-	while (coda_isbusy(dev)) {
-		if (time_after(jiffies, timeout))
-			return -ETIMEDOUT;
-	}
-	return 0;
-}
-
-static void coda_command_async(struct coda_ctx *ctx, int cmd)
-{
-	struct coda_dev *dev = ctx->dev;
-
-	if (dev->devtype->product == CODA_960 ||
-	    dev->devtype->product == CODA_7541) {
-		/* Restore context related registers to CODA */
-		coda_write(dev, ctx->bit_stream_param,
-				CODA_REG_BIT_BIT_STREAM_PARAM);
-		coda_write(dev, ctx->frm_dis_flg,
-				CODA_REG_BIT_FRM_DIS_FLG(ctx->reg_idx));
-		coda_write(dev, ctx->frame_mem_ctrl,
-				CODA_REG_BIT_FRAME_MEM_CTRL);
-		coda_write(dev, ctx->workbuf.paddr, CODA_REG_BIT_WORK_BUF_ADDR);
-	}
-
-	if (dev->devtype->product == CODA_960) {
-		coda_write(dev, 1, CODA9_GDI_WPROT_ERR_CLR);
-		coda_write(dev, 0, CODA9_GDI_WPROT_RGN_EN);
-	}
-
-	coda_write(dev, CODA_REG_BIT_BUSY_FLAG, CODA_REG_BIT_BUSY);
-
-	coda_write(dev, ctx->idx, CODA_REG_BIT_RUN_INDEX);
-	coda_write(dev, ctx->params.codec_mode, CODA_REG_BIT_RUN_COD_STD);
-	coda_write(dev, ctx->params.codec_mode_aux, CODA7_REG_BIT_RUN_AUX_STD);
-
-	coda_write(dev, cmd, CODA_REG_BIT_RUN_COMMAND);
-}
-
-static int coda_command_sync(struct coda_ctx *ctx, int cmd)
-{
-	struct coda_dev *dev = ctx->dev;
-
-	coda_command_async(ctx, cmd);
-	return coda_wait_timeout(dev);
-}
-
-static int coda_hw_reset(struct coda_ctx *ctx)
-{
-	struct coda_dev *dev = ctx->dev;
-	unsigned long timeout;
-	unsigned int idx;
-	int ret;
-
-	if (!dev->rstc)
-		return -ENOENT;
-
-	idx = coda_read(dev, CODA_REG_BIT_RUN_INDEX);
-
-	if (dev->devtype->product == CODA_960) {
-		timeout = jiffies + msecs_to_jiffies(100);
-		coda_write(dev, 0x11, CODA9_GDI_BUS_CTRL);
-		while (coda_read(dev, CODA9_GDI_BUS_STATUS) != 0x77) {
-			if (time_after(jiffies, timeout))
-				return -ETIME;
-			cpu_relax();
-		}
-	}
-
-	ret = reset_control_reset(dev->rstc);
-	if (ret < 0)
-		return ret;
-
-	if (dev->devtype->product == CODA_960)
-		coda_write(dev, 0x00, CODA9_GDI_BUS_CTRL);
-	coda_write(dev, CODA_REG_BIT_BUSY_FLAG, CODA_REG_BIT_BUSY);
-	coda_write(dev, CODA_REG_RUN_ENABLE, CODA_REG_BIT_CODE_RUN);
-	ret = coda_wait_timeout(dev);
-	coda_write(dev, idx, CODA_REG_BIT_RUN_INDEX);
-
-	return ret;
-}
-
-static void coda_bit_stream_end_flag(struct coda_ctx *ctx)
-{
-	struct coda_dev *dev = ctx->dev;
-
-	ctx->bit_stream_param |= CODA_BIT_STREAM_END_FLAG;
-
-	if ((dev->devtype->product == CODA_960) &&
-	    coda_isbusy(dev) &&
-	    (ctx->idx == coda_read(dev, CODA_REG_BIT_RUN_INDEX))) {
-		/* If this context is currently running, update the hardware flag */
-		coda_write(dev, ctx->bit_stream_param, CODA_REG_BIT_BIT_STREAM_PARAM);
-	}
-}
-
-static struct coda_q_data *get_q_data(struct coda_ctx *ctx,
-					 enum v4l2_buf_type type)
-{
-	switch (type) {
-	case V4L2_BUF_TYPE_VIDEO_OUTPUT:
-		return &(ctx->q_data[V4L2_M2M_SRC]);
-	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
-		return &(ctx->q_data[V4L2_M2M_DST]);
-	default:
-		return NULL;
-	}
 }
 
 /*
···
 		*max_h = h;
 }
 
-static char *coda_product_name(int product)
+const char *coda_product_name(int product)
 {
 	static char buf[9];
 
···
 	.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
 };
 
-static int __coda_start_decoding(struct coda_ctx *ctx);
-
-static inline int coda_get_bitstream_payload(struct coda_ctx *ctx)
-{
-	return kfifo_len(&ctx->bitstream_fifo);
-}
-
-static void coda_kfifo_sync_from_device(struct coda_ctx *ctx)
-{
-	struct __kfifo *kfifo = &ctx->bitstream_fifo.kfifo;
-	struct coda_dev *dev = ctx->dev;
-	u32 rd_ptr;
-
-	rd_ptr = coda_read(dev, CODA_REG_BIT_RD_PTR(ctx->reg_idx));
-	kfifo->out = (kfifo->in & ~kfifo->mask) |
-		      (rd_ptr - ctx->bitstream.paddr);
-	if (kfifo->out > kfifo->in)
-		kfifo->out -= kfifo->mask + 1;
-}
-
-static void coda_kfifo_sync_to_device_full(struct coda_ctx *ctx)
-{
-	struct __kfifo *kfifo = &ctx->bitstream_fifo.kfifo;
-	struct coda_dev *dev = ctx->dev;
-	u32 rd_ptr, wr_ptr;
-
-	rd_ptr = ctx->bitstream.paddr + (kfifo->out & kfifo->mask);
-	coda_write(dev, rd_ptr, CODA_REG_BIT_RD_PTR(ctx->reg_idx));
-	wr_ptr = ctx->bitstream.paddr + (kfifo->in & kfifo->mask);
-	coda_write(dev, wr_ptr, CODA_REG_BIT_WR_PTR(ctx->reg_idx));
-}
-
-static void coda_kfifo_sync_to_device_write(struct coda_ctx *ctx)
-{
-	struct __kfifo *kfifo = &ctx->bitstream_fifo.kfifo;
-	struct coda_dev *dev = ctx->dev;
-	u32 wr_ptr;
-
-	wr_ptr = ctx->bitstream.paddr + (kfifo->in & kfifo->mask);
-	coda_write(dev, wr_ptr, CODA_REG_BIT_WR_PTR(ctx->reg_idx));
-}
-
-static int coda_bitstream_queue(struct coda_ctx *ctx, struct vb2_buffer *src_buf)
-{
-	u32 src_size = vb2_get_plane_payload(src_buf, 0);
-	u32 n;
-
-	n = kfifo_in(&ctx->bitstream_fifo, vb2_plane_vaddr(src_buf, 0), src_size);
-	if (n < src_size)
-		return -ENOSPC;
-
-	dma_sync_single_for_device(&ctx->dev->plat_dev->dev, ctx->bitstream.paddr,
-				   ctx->bitstream.size, DMA_TO_DEVICE);
-
-	src_buf->v4l2_buf.sequence = ctx->qsequence++;
-
-	return 0;
-}
-
-static bool coda_bitstream_try_queue(struct coda_ctx *ctx,
-				     struct vb2_buffer *src_buf)
-{
-	int ret;
-
-	if (coda_get_bitstream_payload(ctx) +
-	    vb2_get_plane_payload(src_buf, 0) + 512 >= ctx->bitstream.size)
-		return false;
-
-	if (vb2_plane_vaddr(src_buf, 0) == NULL) {
-		v4l2_err(&ctx->dev->v4l2_dev, "trying to queue empty buffer\n");
-		return true;
-	}
-
-	ret = coda_bitstream_queue(ctx, src_buf);
-	if (ret < 0) {
-		v4l2_err(&ctx->dev->v4l2_dev, "bitstream buffer overflow\n");
-		return false;
-	}
-	/* Sync read pointer to device */
-	if (ctx == v4l2_m2m_get_curr_priv(ctx->dev->m2m_dev))
-		coda_kfifo_sync_to_device_write(ctx);
-
-	ctx->hold = false;
-
-	return true;
-}
-
-static void coda_fill_bitstream(struct coda_ctx *ctx)
-{
-	struct vb2_buffer *src_buf;
-	struct coda_timestamp *ts;
-
-	while (v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx) > 0) {
-		src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
-
-		if (coda_bitstream_try_queue(ctx, src_buf)) {
-			/*
-			 * Source buffer is queued in the bitstream ringbuffer;
-			 * queue the timestamp and mark source buffer as done
-			 */
-			src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
-
-			ts = kmalloc(sizeof(*ts), GFP_KERNEL);
-			if (ts) {
-				ts->sequence = src_buf->v4l2_buf.sequence;
-				ts->timecode = src_buf->v4l2_buf.timecode;
-				ts->timestamp = src_buf->v4l2_buf.timestamp;
-				list_add_tail(&ts->list, &ctx->timestamp_list);
-			}
-
-			v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
-		} else {
-			break;
-		}
-	}
-}
-
-static void coda_set_gdi_regs(struct coda_ctx *ctx)
+void coda_set_gdi_regs(struct coda_ctx *ctx)
 {
 	struct gdi_tiled_map *tiled_map = &ctx->tiled_map;
 	struct coda_dev *dev = ctx->dev;
···
 /*
  * Mem-to-mem operations.
  */
-static int coda_prepare_decode(struct coda_ctx *ctx)
-{
-	struct vb2_buffer *dst_buf;
-	struct coda_dev *dev = ctx->dev;
-	struct coda_q_data *q_data_dst;
-	u32 stridey, height;
-	u32 picture_y, picture_cb, picture_cr;
-
-	dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
-	q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
-
-	if (ctx->params.rot_mode & CODA_ROT_90) {
-		stridey = q_data_dst->height;
-		height = q_data_dst->width;
-	} else {
-		stridey = q_data_dst->width;
-		height = q_data_dst->height;
-	}
-
-	/* Try to copy source buffer contents into the bitstream ringbuffer */
-	mutex_lock(&ctx->bitstream_mutex);
-	coda_fill_bitstream(ctx);
-	mutex_unlock(&ctx->bitstream_mutex);
-
-	if (coda_get_bitstream_payload(ctx) < 512 &&
-	    (!(ctx->bit_stream_param & CODA_BIT_STREAM_END_FLAG))) {
-		v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
-			 "bitstream payload: %d, skipping\n",
-			 coda_get_bitstream_payload(ctx));
-		v4l2_m2m_job_finish(ctx->dev->m2m_dev, ctx->fh.m2m_ctx);
-		return -EAGAIN;
-	}
-
-	/* Run coda_start_decoding (again) if not yet initialized */
-	if (!ctx->initialized) {
-		int ret = __coda_start_decoding(ctx);
-		if (ret < 0) {
-			v4l2_err(&dev->v4l2_dev, "failed to start decoding\n");
-			v4l2_m2m_job_finish(ctx->dev->m2m_dev, ctx->fh.m2m_ctx);
-			return -EAGAIN;
-		} else {
-			ctx->initialized = 1;
-		}
-	}
-
-	if (dev->devtype->product == CODA_960)
-		coda_set_gdi_regs(ctx);
-
-	/* Set rotator output */
-	picture_y = vb2_dma_contig_plane_dma_addr(dst_buf, 0);
-	if (q_data_dst->fourcc == V4L2_PIX_FMT_YVU420) {
-		/* Switch Cr and Cb for YVU420 format */
-		picture_cr = picture_y + stridey * height;
-		picture_cb = picture_cr + stridey / 2 * height / 2;
-	} else {
-		picture_cb = picture_y + stridey * height;
-		picture_cr = picture_cb + stridey / 2 * height / 2;
-	}
-
-	if (dev->devtype->product == CODA_960) {
-		/*
-		 * The CODA960 seems to have an internal list of buffers with
-		 * 64 entries that includes the registered frame buffers as
-		 * well as the rotator buffer output.
-		 * ROT_INDEX needs to be < 0x40, but > ctx->num_internal_frames.
-		 */
-		coda_write(dev, CODA_MAX_FRAMEBUFFERS + dst_buf->v4l2_buf.index,
-				CODA9_CMD_DEC_PIC_ROT_INDEX);
-		coda_write(dev, picture_y, CODA9_CMD_DEC_PIC_ROT_ADDR_Y);
-		coda_write(dev, picture_cb, CODA9_CMD_DEC_PIC_ROT_ADDR_CB);
-		coda_write(dev, picture_cr, CODA9_CMD_DEC_PIC_ROT_ADDR_CR);
-		coda_write(dev, stridey, CODA9_CMD_DEC_PIC_ROT_STRIDE);
-	} else {
-		coda_write(dev, picture_y, CODA_CMD_DEC_PIC_ROT_ADDR_Y);
-		coda_write(dev, picture_cb, CODA_CMD_DEC_PIC_ROT_ADDR_CB);
-		coda_write(dev, picture_cr, CODA_CMD_DEC_PIC_ROT_ADDR_CR);
-		coda_write(dev, stridey, CODA_CMD_DEC_PIC_ROT_STRIDE);
-	}
-	coda_write(dev, CODA_ROT_MIR_ENABLE | ctx->params.rot_mode,
-			CODA_CMD_DEC_PIC_ROT_MODE);
-
-	switch (dev->devtype->product) {
-	case CODA_DX6:
-		/* TBD */
-	case CODA_7541:
-		coda_write(dev, CODA_PRE_SCAN_EN, CODA_CMD_DEC_PIC_OPTION);
-		break;
-	case CODA_960:
-		coda_write(dev, (1 << 10), CODA_CMD_DEC_PIC_OPTION); /* 'hardcode to use interrupt disable mode'? */
-		break;
-	}
-
-	coda_write(dev, 0, CODA_CMD_DEC_PIC_SKIP_NUM);
-
-	coda_write(dev, 0, CODA_CMD_DEC_PIC_BB_START);
-	coda_write(dev, 0, CODA_CMD_DEC_PIC_START_BYTE);
-
-	if (dev->devtype->product != CODA_DX6)
-		coda_write(dev, ctx->iram_info.axi_sram_use,
-				CODA7_REG_BIT_AXI_SRAM_USE);
-
-	coda_kfifo_sync_to_device_full(ctx);
-	coda_command_async(ctx, CODA_COMMAND_PIC_RUN);
-
-	return 0;
-}
-
-static int coda_prepare_encode(struct coda_ctx *ctx)
-{
-	struct coda_q_data *q_data_src, *q_data_dst;
-	struct vb2_buffer *src_buf, *dst_buf;
-	struct coda_dev *dev = ctx->dev;
-	int force_ipicture;
-	int quant_param = 0;
-	u32 picture_y, picture_cb, picture_cr;
-	u32 pic_stream_buffer_addr, pic_stream_buffer_size;
-	u32 dst_fourcc;
-
-	src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
-	dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
-	q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
-	q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
-	dst_fourcc = q_data_dst->fourcc;
-
-	src_buf->v4l2_buf.sequence = ctx->osequence;
-	dst_buf->v4l2_buf.sequence = ctx->osequence;
-	ctx->osequence++;
-
-	/*
-	 * Workaround coda firmware BUG that only marks the first
-	 * frame as IDR. This is a problem for some decoders that can't
-	 * recover when a frame is lost.
-	 */
-	if (src_buf->v4l2_buf.sequence % ctx->params.gop_size) {
-		src_buf->v4l2_buf.flags |= V4L2_BUF_FLAG_PFRAME;
-		src_buf->v4l2_buf.flags &= ~V4L2_BUF_FLAG_KEYFRAME;
-	} else {
-		src_buf->v4l2_buf.flags |= V4L2_BUF_FLAG_KEYFRAME;
-		src_buf->v4l2_buf.flags &= ~V4L2_BUF_FLAG_PFRAME;
-	}
-
-	if (dev->devtype->product == CODA_960)
-		coda_set_gdi_regs(ctx);
-
-	/*
-	 * Copy headers at the beginning of the first frame for H.264 only.
-	 * In MPEG4 they are already copied by the coda.
-	 */
-	if (src_buf->v4l2_buf.sequence == 0) {
-		pic_stream_buffer_addr =
-			vb2_dma_contig_plane_dma_addr(dst_buf, 0) +
-			ctx->vpu_header_size[0] +
-			ctx->vpu_header_size[1] +
-			ctx->vpu_header_size[2];
-		pic_stream_buffer_size = CODA_MAX_FRAME_SIZE -
-			ctx->vpu_header_size[0] -
-			ctx->vpu_header_size[1] -
-			ctx->vpu_header_size[2];
-		memcpy(vb2_plane_vaddr(dst_buf, 0),
-		       &ctx->vpu_header[0][0], ctx->vpu_header_size[0]);
-		memcpy(vb2_plane_vaddr(dst_buf, 0) + ctx->vpu_header_size[0],
-		       &ctx->vpu_header[1][0], ctx->vpu_header_size[1]);
-		memcpy(vb2_plane_vaddr(dst_buf, 0) + ctx->vpu_header_size[0] +
-			ctx->vpu_header_size[1], &ctx->vpu_header[2][0],
-			ctx->vpu_header_size[2]);
-	} else {
-		pic_stream_buffer_addr =
-			vb2_dma_contig_plane_dma_addr(dst_buf, 0);
-		pic_stream_buffer_size = CODA_MAX_FRAME_SIZE;
-	}
-
-	if (src_buf->v4l2_buf.flags & V4L2_BUF_FLAG_KEYFRAME) {
-		force_ipicture = 1;
-		switch (dst_fourcc) {
-		case V4L2_PIX_FMT_H264:
-			quant_param = ctx->params.h264_intra_qp;
-			break;
-		case V4L2_PIX_FMT_MPEG4:
-			quant_param = ctx->params.mpeg4_intra_qp;
-			break;
-		default:
-			v4l2_warn(&ctx->dev->v4l2_dev,
-				"cannot set intra qp, fmt not supported\n");
-			break;
-		}
-	} else {
-		force_ipicture = 0;
-		switch (dst_fourcc) {
-		case V4L2_PIX_FMT_H264:
-			quant_param = ctx->params.h264_inter_qp;
-			break;
-		case V4L2_PIX_FMT_MPEG4:
-			quant_param = ctx->params.mpeg4_inter_qp;
-			break;
-		default:
-			v4l2_warn(&ctx->dev->v4l2_dev,
-				"cannot set inter qp, fmt not supported\n");
-			break;
-		}
-	}
-
-	/* submit */
-	coda_write(dev, CODA_ROT_MIR_ENABLE | ctx->params.rot_mode, CODA_CMD_ENC_PIC_ROT_MODE);
-	coda_write(dev, quant_param, CODA_CMD_ENC_PIC_QS);
-
-
-	picture_y = vb2_dma_contig_plane_dma_addr(src_buf, 0);
-	switch (q_data_src->fourcc) {
-	case V4L2_PIX_FMT_YVU420:
-		/* Switch Cb and Cr for YVU420 format */
-		picture_cr = picture_y + q_data_src->bytesperline *
-				q_data_src->height;
-		picture_cb = picture_cr + q_data_src->bytesperline / 2 *
-				q_data_src->height / 2;
-		break;
-	case V4L2_PIX_FMT_YUV420:
-	default:
-		picture_cb = picture_y + q_data_src->bytesperline *
-				q_data_src->height;
-		picture_cr = picture_cb + q_data_src->bytesperline / 2 *
-				q_data_src->height / 2;
-		break;
-	}
-
-	if (dev->devtype->product == CODA_960) {
-		coda_write(dev, 4/*FIXME: 0*/, CODA9_CMD_ENC_PIC_SRC_INDEX);
-		coda_write(dev, q_data_src->width, CODA9_CMD_ENC_PIC_SRC_STRIDE);
-		coda_write(dev, 0, CODA9_CMD_ENC_PIC_SUB_FRAME_SYNC);
-
-		coda_write(dev, picture_y, CODA9_CMD_ENC_PIC_SRC_ADDR_Y);
-		coda_write(dev, picture_cb, CODA9_CMD_ENC_PIC_SRC_ADDR_CB);
-		coda_write(dev, picture_cr, CODA9_CMD_ENC_PIC_SRC_ADDR_CR);
-	} else {
-		coda_write(dev, picture_y, CODA_CMD_ENC_PIC_SRC_ADDR_Y);
-		coda_write(dev, picture_cb, CODA_CMD_ENC_PIC_SRC_ADDR_CB);
-		coda_write(dev, picture_cr, CODA_CMD_ENC_PIC_SRC_ADDR_CR);
-	}
-	coda_write(dev, force_ipicture << 1 & 0x2,
-		   CODA_CMD_ENC_PIC_OPTION);
-
-	coda_write(dev, pic_stream_buffer_addr, CODA_CMD_ENC_PIC_BB_START);
-	coda_write(dev, pic_stream_buffer_size / 1024,
-		   CODA_CMD_ENC_PIC_BB_SIZE);
-
-	if (!ctx->streamon_out) {
-		/* After streamoff on the output side, set the stream end flag */
-		ctx->bit_stream_param |= CODA_BIT_STREAM_END_FLAG;
-		coda_write(dev, ctx->bit_stream_param, CODA_REG_BIT_BIT_STREAM_PARAM);
-	}
-
-	if (dev->devtype->product != CODA_DX6)
-		coda_write(dev, ctx->iram_info.axi_sram_use,
-				CODA7_REG_BIT_AXI_SRAM_USE);
-
-	coda_command_async(ctx, CODA_COMMAND_PIC_RUN);
-
-	return 0;
-}
 
 static void coda_device_run(void *m2m_priv)
 {
···
 
 	queue_work(dev->workqueue, &ctx->pic_run_work);
 }
-
-static void coda_free_framebuffers(struct coda_ctx *ctx);
-static void coda_free_context_buffers(struct coda_ctx *ctx);
-
-static void coda_seq_end_work(struct work_struct *work)
-{
-	struct coda_ctx *ctx = container_of(work, struct coda_ctx, seq_end_work);
-	struct coda_dev *dev = ctx->dev;
-
-	mutex_lock(&ctx->buffer_mutex);
-	mutex_lock(&dev->coda_mutex);
-
-	v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
-		 "%d: %s: sent command 'SEQ_END' to coda\n", ctx->idx, __func__);
-	if (coda_command_sync(ctx, CODA_COMMAND_SEQ_END)) {
-		v4l2_err(&dev->v4l2_dev,
-			 "CODA_COMMAND_SEQ_END failed\n");
-	}
-
-	kfifo_init(&ctx->bitstream_fifo,
-		ctx->bitstream.vaddr, ctx->bitstream.size);
-
-	coda_free_framebuffers(ctx);
-	coda_free_context_buffers(ctx);
-
-	mutex_unlock(&dev->coda_mutex);
-	mutex_unlock(&ctx->buffer_mutex);
-}
-
-static void coda_finish_decode(struct coda_ctx *ctx);
-static void coda_finish_encode(struct coda_ctx *ctx);
 
 static void coda_pic_run_work(struct work_struct *work)
 {
···
 	}
 }
 
-static void coda_parabuf_write(struct coda_ctx *ctx, int index, u32 value)
-{
-	struct coda_dev *dev = ctx->dev;
-	u32 *p = ctx->parabuf.vaddr;
-
-	if (dev->devtype->product == CODA_DX6)
-		p[index] = value;
-	else
-		p[index ^ 1] = value;
-}
-
-static int coda_alloc_aux_buf(struct coda_dev *dev,
-			      struct coda_aux_buf *buf, size_t size,
-			      const char *name, struct dentry *parent)
+int coda_alloc_aux_buf(struct coda_dev *dev, struct coda_aux_buf *buf,
+		       size_t size, const char *name, struct dentry *parent)
 {
 	buf->vaddr = dma_alloc_coherent(&dev->plat_dev->dev, size, &buf->paddr,
 					GFP_KERNEL);
···
 	return 0;
 }
 
-static inline int coda_alloc_context_buf(struct coda_ctx *ctx,
-					 struct coda_aux_buf *buf, size_t size,
-					 const char *name)
-{
-	return coda_alloc_aux_buf(ctx->dev, buf, size, name, ctx->debugfs_entry);
-}
-
-static void coda_free_aux_buf(struct coda_dev *dev,
-			      struct coda_aux_buf *buf)
+void coda_free_aux_buf(struct coda_dev *dev,
+		       struct coda_aux_buf *buf)
 {
 	if (buf->vaddr) {
 		dma_free_coherent(&dev->plat_dev->dev, buf->size,
···
 	}
 	debugfs_remove(buf->dentry);
 }
-
-static void coda_free_framebuffers(struct coda_ctx *ctx)
-{
-	int i;
-
-	for (i = 0; i < CODA_MAX_FRAMEBUFFERS; i++)
-		coda_free_aux_buf(ctx->dev, &ctx->internal_frames[i]);
-}
-
-static int coda_alloc_framebuffers(struct coda_ctx *ctx, struct coda_q_data *q_data, u32 fourcc)
-{
-	struct coda_dev *dev = ctx->dev;
-	int width, height;
-	dma_addr_t paddr;
-	int ysize;
-	int ret;
-	int i;
-
-	if (ctx->codec && (ctx->codec->src_fourcc == V4L2_PIX_FMT_H264 ||
-	     ctx->codec->dst_fourcc == V4L2_PIX_FMT_H264)) {
-		width = round_up(q_data->width, 16);
-		height = round_up(q_data->height, 16);
-	} else {
-		width = round_up(q_data->width, 8);
-		height = q_data->height;
-	}
-	ysize = width * height;
-
-	/* Allocate frame buffers */
-	for (i = 0; i < ctx->num_internal_frames; i++) {
-		size_t size;
-		char *name;
-
-		size = ysize + ysize / 2;
-		if (ctx->codec->src_fourcc == V4L2_PIX_FMT_H264 &&
-		    dev->devtype->product != CODA_DX6)
-			size += ysize / 4;
-		name = kasprintf(GFP_KERNEL, "fb%d", i);
-		ret = coda_alloc_context_buf(ctx, &ctx->internal_frames[i],
-					     size, name);
-		kfree(name);
-		if (ret < 0) {
-			coda_free_framebuffers(ctx);
-			return ret;
-		}
-	}
-
-	/* Register frame buffers in the parameter buffer */
-	for (i = 0; i < ctx->num_internal_frames; i++) {
-		paddr = ctx->internal_frames[i].paddr;
-		coda_parabuf_write(ctx, i * 3 + 0, paddr); /* Y */
-		coda_parabuf_write(ctx, i * 3 + 1, paddr + ysize); /* Cb */
-		coda_parabuf_write(ctx, i * 3 + 2, paddr + ysize + ysize/4); /* Cr */
-
-		/* mvcol buffer for h.264 */
-		if (ctx->codec->src_fourcc == V4L2_PIX_FMT_H264 &&
-		    dev->devtype->product != CODA_DX6)
-			coda_parabuf_write(ctx, 96 + i,
-					   ctx->internal_frames[i].paddr +
-					   ysize + ysize/4 + ysize/4);
-	}
-
-	/* mvcol buffer for mpeg4 */
-	if ((dev->devtype->product != CODA_DX6) &&
-	    (ctx->codec->src_fourcc == V4L2_PIX_FMT_MPEG4))
-		coda_parabuf_write(ctx, 97, ctx->internal_frames[i].paddr +
-					    ysize + ysize/4 + ysize/4);
-
-	return 0;
-}
-
-static phys_addr_t coda_iram_alloc(struct coda_iram_info *iram, size_t size)
-{
-	phys_addr_t ret;
-
-	size = round_up(size, 1024);
-	if (size > iram->remaining)
-		return 0;
-	iram->remaining -= size;
-
-	ret = iram->next_paddr;
-	iram->next_paddr += size;
-
-	return ret;
-}
-
-static void coda_setup_iram(struct coda_ctx *ctx)
-{
-	struct coda_iram_info *iram_info = &ctx->iram_info;
-	struct coda_dev *dev = ctx->dev;
-	int mb_width;
-	int dbk_bits;
-	int bit_bits;
-	int ip_bits;
-
-	memset(iram_info, 0, sizeof(*iram_info));
-	iram_info->next_paddr = dev->iram.paddr;
-	iram_info->remaining = dev->iram.size;
-
-	switch (dev->devtype->product) {
-	case CODA_7541:
-		dbk_bits = CODA7_USE_HOST_DBK_ENABLE | CODA7_USE_DBK_ENABLE;
-		bit_bits = CODA7_USE_HOST_BIT_ENABLE | CODA7_USE_BIT_ENABLE;
-		ip_bits = CODA7_USE_HOST_IP_ENABLE | CODA7_USE_IP_ENABLE;
-		break;
-	case CODA_960:
-		dbk_bits = CODA9_USE_HOST_DBK_ENABLE | CODA9_USE_DBK_ENABLE;
-		bit_bits = CODA9_USE_HOST_BIT_ENABLE | CODA7_USE_BIT_ENABLE;
-		ip_bits = CODA9_USE_HOST_IP_ENABLE | CODA7_USE_IP_ENABLE;
-		break;
-	default: /* CODA_DX6 */
-		return;
-	}
-
-	if (ctx->inst_type == CODA_INST_ENCODER) {
-		struct coda_q_data *q_data_src;
-
-		q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
-		mb_width = DIV_ROUND_UP(q_data_src->width, 16);
-
-		/* Prioritize in case IRAM is too small for everything */
-		if (dev->devtype->product == CODA_7541) {
-			iram_info->search_ram_size = round_up(mb_width * 16 *
-							      36 + 2048, 1024);
-			iram_info->search_ram_paddr = coda_iram_alloc(iram_info,
-							iram_info->search_ram_size);
-			if (!iram_info->search_ram_paddr) {
-				pr_err("IRAM is smaller than the search ram size\n");
-				goto out;
-			}
-			iram_info->axi_sram_use |= CODA7_USE_HOST_ME_ENABLE |
-						   CODA7_USE_ME_ENABLE;
-		}
-
-		/* Only H.264BP and H.263P3 are considered */
-		iram_info->buf_dbk_y_use = coda_iram_alloc(iram_info, 64 * mb_width);
-		iram_info->buf_dbk_c_use = coda_iram_alloc(iram_info, 64 * mb_width);
-		if (!iram_info->buf_dbk_c_use)
-			goto out;
-		iram_info->axi_sram_use |= dbk_bits;
-
-		iram_info->buf_bit_use = coda_iram_alloc(iram_info, 128 * mb_width);
-		if (!iram_info->buf_bit_use)
-			goto out;
-		iram_info->axi_sram_use |= bit_bits;
-
-		iram_info->buf_ip_ac_dc_use = coda_iram_alloc(iram_info, 128 * mb_width);
-		if (!iram_info->buf_ip_ac_dc_use)
-			goto out;
-		iram_info->axi_sram_use |= ip_bits;
-
-		/* OVL and BTP disabled for encoder */
-	} else if (ctx->inst_type == CODA_INST_DECODER) {
-		struct coda_q_data *q_data_dst;
-
-		q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
-		mb_width = DIV_ROUND_UP(q_data_dst->width, 16);
-
-		iram_info->buf_dbk_y_use = coda_iram_alloc(iram_info, 128 * mb_width);
-		iram_info->buf_dbk_c_use = coda_iram_alloc(iram_info, 128 * mb_width);
-		if (!iram_info->buf_dbk_c_use)
-			goto out;
-		iram_info->axi_sram_use |= dbk_bits;
-
-		iram_info->buf_bit_use = coda_iram_alloc(iram_info, 128 * mb_width);
-		if (!iram_info->buf_bit_use)
-			goto out;
-		iram_info->axi_sram_use |= bit_bits;
-
-		iram_info->buf_ip_ac_dc_use = coda_iram_alloc(iram_info, 128 * mb_width);
-		if (!iram_info->buf_ip_ac_dc_use)
-			goto out;
-		iram_info->axi_sram_use |= ip_bits;
-
-		/* OVL and BTP unused as there is no VC1 support yet */
-	}
-
-out:
-	if (!(iram_info->axi_sram_use & CODA7_USE_HOST_IP_ENABLE))
-		v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
-			 "IRAM smaller than needed\n");
-
-	if (dev->devtype->product == CODA_7541) {
-		/* TODO - Enabling these causes picture errors on CODA7541 */
-		if (ctx->inst_type == CODA_INST_DECODER) {
-			/* fw 1.4.50 */
-			iram_info->axi_sram_use &= ~(CODA7_USE_HOST_IP_ENABLE |
-						     CODA7_USE_IP_ENABLE);
-		} else {
-			/* fw 13.4.29 */
-			iram_info->axi_sram_use &= ~(CODA7_USE_HOST_IP_ENABLE |
-						     CODA7_USE_HOST_DBK_ENABLE |
-						     CODA7_USE_IP_ENABLE |
-						     CODA7_USE_DBK_ENABLE);
-		}
-	}
-}
-
-static void coda_free_context_buffers(struct coda_ctx *ctx)
-{
-	struct coda_dev *dev = ctx->dev;
-
-	coda_free_aux_buf(dev, &ctx->slicebuf);
-	coda_free_aux_buf(dev, &ctx->psbuf);
-	if (dev->devtype->product != CODA_DX6)
-		coda_free_aux_buf(dev, &ctx->workbuf);
-}
-
-static int coda_alloc_context_buffers(struct coda_ctx *ctx,
-				      struct coda_q_data *q_data)
-{
-	struct coda_dev *dev = ctx->dev;
-	size_t size;
-	int ret;
-
-	if (dev->devtype->product == CODA_DX6)
-		return 0;
-
-	if (ctx->psbuf.vaddr) {
-		v4l2_err(&dev->v4l2_dev, "psmembuf still allocated\n");
-		return -EBUSY;
-	}
-	if (ctx->slicebuf.vaddr) {
-		v4l2_err(&dev->v4l2_dev, "slicebuf still allocated\n");
-		return -EBUSY;
-	}
-	if (ctx->workbuf.vaddr) {
-		v4l2_err(&dev->v4l2_dev, "context buffer still allocated\n");
-		ret = -EBUSY;
-		return -ENOMEM;
-	}
-
-	if (q_data->fourcc == V4L2_PIX_FMT_H264) {
-		/* worst case slice size */
-		size = (DIV_ROUND_UP(q_data->width, 16) *
-			DIV_ROUND_UP(q_data->height, 16)) * 3200 / 8 + 512;
-		ret = coda_alloc_context_buf(ctx, &ctx->slicebuf, size, "slicebuf");
-		if (ret < 0) {
-			v4l2_err(&dev->v4l2_dev, "failed to allocate %d byte slice buffer",
-				 ctx->slicebuf.size);
-			return ret;
-		}
-	}
-
-	if (dev->devtype->product == CODA_7541) {
-		ret = coda_alloc_context_buf(ctx, &ctx->psbuf, CODA7_PS_BUF_SIZE, "psbuf");
-		if (ret < 0) {
-			v4l2_err(&dev->v4l2_dev, "failed to allocate psmem buffer");
-			goto err;
-		}
-	}
-
-	size = dev->devtype->workbuf_size;
-	if (dev->devtype->product == CODA_960 &&
-	    q_data->fourcc == V4L2_PIX_FMT_H264)
-		size += CODA9_PS_SAVE_SIZE;
-	ret = coda_alloc_context_buf(ctx, &ctx->workbuf, size, "workbuf");
-	if (ret < 0) {
-		v4l2_err(&dev->v4l2_dev, "failed to allocate %d byte context buffer",
-			 ctx->workbuf.size);
-		goto err;
-	}
-
-	return 0;
-
-err:
-	coda_free_context_buffers(ctx);
-	return ret;
-}
-
-static int __coda_start_decoding(struct coda_ctx *ctx)
-{
-	struct coda_q_data *q_data_src, *q_data_dst;
-	u32 bitstream_buf, bitstream_size;
-	struct coda_dev *dev = ctx->dev;
-	int width, height;
-	u32 src_fourcc;
-	u32 val;
-	int ret;
-
-	/* Start decoding */
-	q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
-	q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
-	bitstream_buf = ctx->bitstream.paddr;
-	bitstream_size = ctx->bitstream.size;
-	src_fourcc = q_data_src->fourcc;
-
-	/* Allocate per-instance buffers */
-	ret = coda_alloc_context_buffers(ctx, q_data_src);
-	if (ret < 0)
-		return ret;
-
-	coda_write(dev, ctx->parabuf.paddr, CODA_REG_BIT_PARA_BUF_ADDR);
-
-	/* Update coda bitstream read and write pointers from kfifo */
-	coda_kfifo_sync_to_device_full(ctx);
-
-	ctx->display_idx = -1;
-	ctx->frm_dis_flg = 0;
-	coda_write(dev, 0, CODA_REG_BIT_FRM_DIS_FLG(ctx->reg_idx));
-
-	coda_write(dev, CODA_BIT_DEC_SEQ_INIT_ESCAPE,
-			CODA_REG_BIT_BIT_STREAM_PARAM);
-
-	coda_write(dev, bitstream_buf, CODA_CMD_DEC_SEQ_BB_START);
-	coda_write(dev, bitstream_size / 1024, CODA_CMD_DEC_SEQ_BB_SIZE);
-	val = 0;
-	if ((dev->devtype->product == CODA_7541) ||
-	    (dev->devtype->product == CODA_960))
-		val |= CODA_REORDER_ENABLE;
-	coda_write(dev, val, CODA_CMD_DEC_SEQ_OPTION);
-
-	ctx->params.codec_mode = ctx->codec->mode;
-	if (dev->devtype->product == CODA_960 &&
-	    src_fourcc == V4L2_PIX_FMT_MPEG4)
-		ctx->params.codec_mode_aux = CODA_MP4_AUX_MPEG4;
-	else
-		ctx->params.codec_mode_aux = 0;
-	if (src_fourcc == V4L2_PIX_FMT_H264) {
-		if (dev->devtype->product == CODA_7541) {
-			coda_write(dev, ctx->psbuf.paddr,
-					CODA_CMD_DEC_SEQ_PS_BB_START);
-			coda_write(dev, (CODA7_PS_BUF_SIZE / 1024),
-					CODA_CMD_DEC_SEQ_PS_BB_SIZE);
-		}
-		if (dev->devtype->product == CODA_960) {
-			coda_write(dev, 0, CODA_CMD_DEC_SEQ_X264_MV_EN);
-			coda_write(dev, 512, CODA_CMD_DEC_SEQ_SPP_CHUNK_SIZE);
-		}
-	}
-	if (dev->devtype->product != CODA_960) {
-		coda_write(dev, 0, CODA_CMD_DEC_SEQ_SRC_SIZE);
-	}
-
-	if (coda_command_sync(ctx, CODA_COMMAND_SEQ_INIT)) {
-		v4l2_err(&dev->v4l2_dev, "CODA_COMMAND_SEQ_INIT timeout\n");
-		coda_write(dev, 0, CODA_REG_BIT_BIT_STREAM_PARAM);
-		return -ETIMEDOUT;
-	}
-
-	/* Update kfifo out pointer from coda bitstream read pointer */
-	coda_kfifo_sync_from_device(ctx);
-
-	coda_write(dev, 0, CODA_REG_BIT_BIT_STREAM_PARAM);
-
-	if (coda_read(dev, CODA_RET_DEC_SEQ_SUCCESS) == 0) {
-		v4l2_err(&dev->v4l2_dev,
-			"CODA_COMMAND_SEQ_INIT failed, error code = %d\n",
-			coda_read(dev, CODA_RET_DEC_SEQ_ERR_REASON));
-		return -EAGAIN;
-	}
-
-	val = coda_read(dev, CODA_RET_DEC_SEQ_SRC_SIZE);
-	if (dev->devtype->product == CODA_DX6) {
-		width = (val >> CODADX6_PICWIDTH_OFFSET) & CODADX6_PICWIDTH_MASK;
-		height = val & CODADX6_PICHEIGHT_MASK;
-	} else {
-		width = (val >> CODA7_PICWIDTH_OFFSET) & CODA7_PICWIDTH_MASK;
-		height = val & CODA7_PICHEIGHT_MASK;
-	}
-
-	if (width > q_data_dst->width || height > q_data_dst->height) {
-		v4l2_err(&dev->v4l2_dev, "stream is %dx%d, not %dx%d\n",
-			 width, height, q_data_dst->width, q_data_dst->height);
-		return -EINVAL;
-	}
-
-	width = round_up(width, 16);
-	height = round_up(height, 16);
-
-	v4l2_dbg(1, coda_debug, &dev->v4l2_dev, "%s instance %d now: %dx%d\n",
-		 __func__, ctx->idx, width, height);
-
-	ctx->num_internal_frames = coda_read(dev, CODA_RET_DEC_SEQ_FRAME_NEED);
-	if (ctx->num_internal_frames > CODA_MAX_FRAMEBUFFERS) {
-		v4l2_err(&dev->v4l2_dev,
-			 "not enough framebuffers to decode (%d < %d)\n",
-			 CODA_MAX_FRAMEBUFFERS, ctx->num_internal_frames);
-		return -EINVAL;
-	}
-
-	if (src_fourcc == V4L2_PIX_FMT_H264) {
-		u32 left_right;
-		u32 top_bottom;
-
-		left_right = coda_read(dev, CODA_RET_DEC_SEQ_CROP_LEFT_RIGHT);
-		top_bottom = coda_read(dev, CODA_RET_DEC_SEQ_CROP_TOP_BOTTOM);
-
-		q_data_dst->rect.left = (left_right >> 10) & 0x3ff;
-		q_data_dst->rect.top = (top_bottom >> 10) & 0x3ff;
-		q_data_dst->rect.width = width - q_data_dst->rect.left -
-					 (left_right & 0x3ff);
-		q_data_dst->rect.height = height - q_data_dst->rect.top -
-					  (top_bottom & 0x3ff);
-	}
-
-	ret = coda_alloc_framebuffers(ctx, q_data_dst, src_fourcc);
-	if (ret < 0)
-		return ret;
-
-	/* Tell the decoder how many frame buffers we allocated. */
-	coda_write(dev, ctx->num_internal_frames, CODA_CMD_SET_FRAME_BUF_NUM);
-	coda_write(dev, width, CODA_CMD_SET_FRAME_BUF_STRIDE);
-
-	if (dev->devtype->product != CODA_DX6) {
-		/* Set secondary AXI IRAM */
-		coda_setup_iram(ctx);
-
-		coda_write(dev, ctx->iram_info.buf_bit_use,
-				CODA7_CMD_SET_FRAME_AXI_BIT_ADDR);
-		coda_write(dev, ctx->iram_info.buf_ip_ac_dc_use,
-				CODA7_CMD_SET_FRAME_AXI_IPACDC_ADDR);
-		coda_write(dev, ctx->iram_info.buf_dbk_y_use,
-				CODA7_CMD_SET_FRAME_AXI_DBKY_ADDR);
-		coda_write(dev, ctx->iram_info.buf_dbk_c_use,
-				CODA7_CMD_SET_FRAME_AXI_DBKC_ADDR);
-		coda_write(dev, ctx->iram_info.buf_ovl_use,
-				CODA7_CMD_SET_FRAME_AXI_OVL_ADDR);
-		if (dev->devtype->product == CODA_960)
-			coda_write(dev, ctx->iram_info.buf_btp_use,
-					CODA9_CMD_SET_FRAME_AXI_BTP_ADDR);
-	}
-
-	if (dev->devtype->product == CODA_960) {
-		coda_write(dev, -1, CODA9_CMD_SET_FRAME_DELAY);
-
-		coda_write(dev, 0x20262024, CODA9_CMD_SET_FRAME_CACHE_SIZE);
-		coda_write(dev, 2 << CODA9_CACHE_PAGEMERGE_OFFSET |
-				32 << CODA9_CACHE_LUMA_BUFFER_SIZE_OFFSET |
-				8 << CODA9_CACHE_CB_BUFFER_SIZE_OFFSET |
-				8 << CODA9_CACHE_CR_BUFFER_SIZE_OFFSET,
-				CODA9_CMD_SET_FRAME_CACHE_CONFIG);
-	}
-
-	if (src_fourcc == V4L2_PIX_FMT_H264) {
-		coda_write(dev, ctx->slicebuf.paddr,
-				CODA_CMD_SET_FRAME_SLICE_BB_START);
-		coda_write(dev, ctx->slicebuf.size / 1024,
-				CODA_CMD_SET_FRAME_SLICE_BB_SIZE);
-	}
-
-	if (dev->devtype->product == CODA_7541) {
-		int max_mb_x = 1920 / 16;
-		int max_mb_y = 1088 / 16;
-		int max_mb_num = max_mb_x * max_mb_y;
-
-		coda_write(dev, max_mb_num << 16 | max_mb_x << 8 | max_mb_y,
-				CODA7_CMD_SET_FRAME_MAX_DEC_SIZE);
-	} else if (dev->devtype->product == CODA_960) {
-		int max_mb_x = 1920 / 16;
-		int max_mb_y = 1088 / 16;
-		int max_mb_num = max_mb_x * max_mb_y;
-
-		coda_write(dev, max_mb_num << 16 | max_mb_x << 8 | max_mb_y,
-				CODA9_CMD_SET_FRAME_MAX_DEC_SIZE);
-	}
-
-	if (coda_command_sync(ctx, CODA_COMMAND_SET_FRAME_BUF)) {
-		v4l2_err(&ctx->dev->v4l2_dev,
-			 "CODA_COMMAND_SET_FRAME_BUF timeout\n");
-		return -ETIMEDOUT;
-	}
-
-	return 0;
-}
-
-static int coda_start_decoding(struct coda_ctx *ctx)
-{
-	struct coda_dev *dev = ctx->dev;
-	int ret;
-
-	mutex_lock(&dev->coda_mutex);
-	ret = __coda_start_decoding(ctx);
-	mutex_unlock(&dev->coda_mutex);
-
-	return ret;
-}
-
-static int coda_encode_header(struct coda_ctx *ctx, struct vb2_buffer *buf,
-			      int header_code, u8 *header, int *size)
-{
-	struct coda_dev *dev = ctx->dev;
-	size_t bufsize;
-	int ret;
-	int i;
-
-	if (dev->devtype->product == CODA_960)
-		memset(vb2_plane_vaddr(buf, 0), 0, 64);
-
-	coda_write(dev, vb2_dma_contig_plane_dma_addr(buf, 0),
-		   CODA_CMD_ENC_HEADER_BB_START);
-	bufsize = vb2_plane_size(buf, 0);
-	if (dev->devtype->product == CODA_960)
-		bufsize /= 1024;
-	coda_write(dev, bufsize, CODA_CMD_ENC_HEADER_BB_SIZE);
-	coda_write(dev, header_code, CODA_CMD_ENC_HEADER_CODE);
-	ret = coda_command_sync(ctx, CODA_COMMAND_ENCODE_HEADER);
-	if (ret < 0) {
-		v4l2_err(&dev->v4l2_dev, "CODA_COMMAND_ENCODE_HEADER timeout\n");
-		return ret;
-	}
-
-	if (dev->devtype->product == CODA_960) {
-		for (i = 63; i > 0; i--)
-			if (((char *)vb2_plane_vaddr(buf, 0))[i] != 0)
-				break;
-		*size = i + 1;
-	} else {
-		*size = coda_read(dev, CODA_REG_BIT_WR_PTR(ctx->reg_idx)) -
-			coda_read(dev, CODA_CMD_ENC_HEADER_BB_START);
-	}
-	memcpy(header, vb2_plane_vaddr(buf, 0), *size);
-
-	return 0;
-}
-
-static int coda_start_encoding(struct coda_ctx *ctx);
 
 static int coda_start_streaming(struct vb2_queue *q, unsigned int count)
 {
···
 	}
 
 	ctx->initialized = 1;
-	return ret;
-}
-
-static int coda_start_encoding(struct coda_ctx *ctx)
-{
-	struct coda_dev *dev = ctx->dev;
-	struct v4l2_device *v4l2_dev = &dev->v4l2_dev;
-	struct coda_q_data *q_data_src, *q_data_dst;
-	u32 bitstream_buf, bitstream_size;
-	struct vb2_buffer *buf;
-	int gamma, ret, value;
-	u32 dst_fourcc;
-
-	q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
-	q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
-	dst_fourcc = q_data_dst->fourcc;
-
-	/* Allocate per-instance buffers */
-	ret = coda_alloc_context_buffers(ctx, q_data_src);
-	if (ret < 0)
-		return ret;
-
-	buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
-	bitstream_buf = vb2_dma_contig_plane_dma_addr(buf, 0);
-	bitstream_size = q_data_dst->sizeimage;
-
-	if (!coda_is_initialized(dev)) {
-		v4l2_err(v4l2_dev, "coda is not initialized.\n");
-		return -EFAULT;
-	}
-
-	mutex_lock(&dev->coda_mutex);
-
-	coda_write(dev, ctx->parabuf.paddr, CODA_REG_BIT_PARA_BUF_ADDR);
-	coda_write(dev, bitstream_buf, CODA_REG_BIT_RD_PTR(ctx->reg_idx));
-	coda_write(dev, bitstream_buf, CODA_REG_BIT_WR_PTR(ctx->reg_idx));
-	switch (dev->devtype->product) {
-	case CODA_DX6:
-		coda_write(dev, CODADX6_STREAM_BUF_DYNALLOC_EN |
-			CODADX6_STREAM_BUF_PIC_RESET, CODA_REG_BIT_STREAM_CTRL);
-		break;
-	case CODA_960:
-		coda_write(dev, 0, CODA9_GDI_WPROT_RGN_EN);
-		/* fallthrough */
-	case CODA_7541:
-		coda_write(dev, CODA7_STREAM_BUF_DYNALLOC_EN |
-			CODA7_STREAM_BUF_PIC_RESET, CODA_REG_BIT_STREAM_CTRL);
-		break;
-	}
-
-	value = coda_read(dev, CODA_REG_BIT_FRAME_MEM_CTRL);
-	value &= ~(1 << 2 | 0x7 << 9);
-	ctx->frame_mem_ctrl = value;
-	coda_write(dev, value, CODA_REG_BIT_FRAME_MEM_CTRL);
-
-	if (dev->devtype->product == CODA_DX6) {
-		/* Configure the coda */
-		coda_write(dev, dev->iram.paddr, CODADX6_REG_BIT_SEARCH_RAM_BASE_ADDR);
-	}
-
-	/* Could set rotation here if needed */
-	switch (dev->devtype->product) {
-	case CODA_DX6:
-		value = (q_data_src->width & CODADX6_PICWIDTH_MASK) << CODADX6_PICWIDTH_OFFSET;
-		value |= (q_data_src->height & CODADX6_PICHEIGHT_MASK) << CODA_PICHEIGHT_OFFSET;
-		break;
-	case CODA_7541:
-		if (dst_fourcc == V4L2_PIX_FMT_H264) {
-			value = (round_up(q_data_src->width, 16) &
-				 CODA7_PICWIDTH_MASK) << CODA7_PICWIDTH_OFFSET;
-			value |= (round_up(q_data_src->height, 16) &
-				  CODA7_PICHEIGHT_MASK) << CODA_PICHEIGHT_OFFSET;
-			break;
-		}
-		/* fallthrough */
-	case CODA_960:
-		value = (q_data_src->width & CODA7_PICWIDTH_MASK) << CODA7_PICWIDTH_OFFSET;
-		value |= (q_data_src->height & CODA7_PICHEIGHT_MASK) << CODA_PICHEIGHT_OFFSET;
-	}
-	coda_write(dev, value, CODA_CMD_ENC_SEQ_SRC_SIZE);
-	coda_write(dev, ctx->params.framerate,
-		   CODA_CMD_ENC_SEQ_SRC_F_RATE);
-
-	ctx->params.codec_mode = ctx->codec->mode;
-	switch (dst_fourcc) {
-	case V4L2_PIX_FMT_MPEG4:
-		if (dev->devtype->product == CODA_960)
-			coda_write(dev, CODA9_STD_MPEG4, CODA_CMD_ENC_SEQ_COD_STD);
-		else
-			coda_write(dev, CODA_STD_MPEG4, CODA_CMD_ENC_SEQ_COD_STD);
-		coda_write(dev, 0, CODA_CMD_ENC_SEQ_MP4_PARA);
-		break;
-	case V4L2_PIX_FMT_H264:
-		if (dev->devtype->product == CODA_960)
-			coda_write(dev, CODA9_STD_H264, CODA_CMD_ENC_SEQ_COD_STD);
-		else
-			coda_write(dev, CODA_STD_H264, CODA_CMD_ENC_SEQ_COD_STD);
-		if (ctx->params.h264_deblk_enabled) {
-			value = ((ctx->params.h264_deblk_alpha &
-				  CODA_264PARAM_DEBLKFILTEROFFSETALPHA_MASK) <<
-				 CODA_264PARAM_DEBLKFILTEROFFSETALPHA_OFFSET) |
-				((ctx->params.h264_deblk_beta &
-				  CODA_264PARAM_DEBLKFILTEROFFSETBETA_MASK) <<
-				 CODA_264PARAM_DEBLKFILTEROFFSETBETA_OFFSET);
-		} else {
-			value = 1 << CODA_264PARAM_DISABLEDEBLK_OFFSET;
-		}
-		coda_write(dev, value, CODA_CMD_ENC_SEQ_264_PARA);
-		break;
-	default:
-		v4l2_err(v4l2_dev,
-			 "dst format (0x%08x) invalid.\n", dst_fourcc);
-		ret = -EINVAL;
-		goto out;
-	}
-
-	switch (ctx->params.slice_mode) {
-	case V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_SINGLE:
-		value = 0;
-		break;
-	case V4L2_MPEG_VIDEO_MULTI_SICE_MODE_MAX_MB:
-		value  = (ctx->params.slice_max_mb & CODA_SLICING_SIZE_MASK) << CODA_SLICING_SIZE_OFFSET;
-		value |= (1 & CODA_SLICING_UNIT_MASK) << CODA_SLICING_UNIT_OFFSET;
-		value |=  1 & CODA_SLICING_MODE_MASK;
-		break;
-	case V4L2_MPEG_VIDEO_MULTI_SICE_MODE_MAX_BYTES:
-		value  = (ctx->params.slice_max_bits & CODA_SLICING_SIZE_MASK) << CODA_SLICING_SIZE_OFFSET;
-		value |= (0 & CODA_SLICING_UNIT_MASK) << CODA_SLICING_UNIT_OFFSET;
-		value |=  1 & CODA_SLICING_MODE_MASK;
-		break;
-	}
-	coda_write(dev, value, CODA_CMD_ENC_SEQ_SLICE_MODE);
-	value = ctx->params.gop_size & CODA_GOP_SIZE_MASK;
-	coda_write(dev, value, CODA_CMD_ENC_SEQ_GOP_SIZE);
-
-	if (ctx->params.bitrate) {
-		/* Rate control enabled */
-		value = (ctx->params.bitrate & CODA_RATECONTROL_BITRATE_MASK) << CODA_RATECONTROL_BITRATE_OFFSET;
-		value |=  1 & CODA_RATECONTROL_ENABLE_MASK;
-		if (dev->devtype->product == CODA_960)
-			value |= BIT(31); /* disable autoskip */
-	} else {
-		value = 0;
-	}
-	coda_write(dev, value, CODA_CMD_ENC_SEQ_RC_PARA);
-
-	coda_write(dev, 0, CODA_CMD_ENC_SEQ_RC_BUF_SIZE);
-	coda_write(dev, ctx->params.intra_refresh,
-		   CODA_CMD_ENC_SEQ_INTRA_REFRESH);
-
-	coda_write(dev, bitstream_buf, CODA_CMD_ENC_SEQ_BB_START);
-	coda_write(dev, bitstream_size / 1024, CODA_CMD_ENC_SEQ_BB_SIZE);
-
-
-	value = 0;
-	if (dev->devtype->product == CODA_960)
-		gamma = CODA9_DEFAULT_GAMMA;
-	else
-		gamma = CODA_DEFAULT_GAMMA;
-	if (gamma > 0) {
-		coda_write(dev, (gamma & CODA_GAMMA_MASK) << CODA_GAMMA_OFFSET,
-			   CODA_CMD_ENC_SEQ_RC_GAMMA);
-	}
-
-	if (ctx->params.h264_min_qp || ctx->params.h264_max_qp) {
-		coda_write(dev,
-			   ctx->params.h264_min_qp << CODA_QPMIN_OFFSET |
-			   ctx->params.h264_max_qp << CODA_QPMAX_OFFSET,
-			   CODA_CMD_ENC_SEQ_RC_QP_MIN_MAX);
-	}
-	if (dev->devtype->product == CODA_960) {
-		if (ctx->params.h264_max_qp)
-			value |= 1 << CODA9_OPTION_RCQPMAX_OFFSET;
-		if (CODA_DEFAULT_GAMMA > 0)
-			value |= 1 << CODA9_OPTION_GAMMA_OFFSET;
-	} else {
-		if (CODA_DEFAULT_GAMMA > 0) {
-			if (dev->devtype->product == CODA_DX6)
-				value |= 1 << CODADX6_OPTION_GAMMA_OFFSET;
-			else
-				value |= 1 << CODA7_OPTION_GAMMA_OFFSET;
-		}
-		if (ctx->params.h264_min_qp)
-			value |= 1 << CODA7_OPTION_RCQPMIN_OFFSET;
-		if (ctx->params.h264_max_qp)
-			value |= 1 << CODA7_OPTION_RCQPMAX_OFFSET;
-	}
-	coda_write(dev, value, CODA_CMD_ENC_SEQ_OPTION);
-
-	coda_write(dev, 0, CODA_CMD_ENC_SEQ_RC_INTERVAL_MODE);
-
-	coda_setup_iram(ctx);
-
-	if (dst_fourcc == V4L2_PIX_FMT_H264) {
-		switch (dev->devtype->product) {
-		case CODA_DX6:
-			value = FMO_SLICE_SAVE_BUF_SIZE << 7;
-			coda_write(dev, value, CODADX6_CMD_ENC_SEQ_FMO);
-			break;
-		case CODA_7541:
-			coda_write(dev, ctx->iram_info.search_ram_paddr,
-					CODA7_CMD_ENC_SEQ_SEARCH_BASE);
-			coda_write(dev, ctx->iram_info.search_ram_size,
-					CODA7_CMD_ENC_SEQ_SEARCH_SIZE);
-			break;
-		case CODA_960:
-			coda_write(dev, 0, CODA9_CMD_ENC_SEQ_ME_OPTION);
-			coda_write(dev, 0, CODA9_CMD_ENC_SEQ_INTRA_WEIGHT);
-		}
-	}
-
-	ret = coda_command_sync(ctx, CODA_COMMAND_SEQ_INIT);
-	if (ret < 0) {
-		v4l2_err(v4l2_dev, "CODA_COMMAND_SEQ_INIT timeout\n");
-		goto out;
-	}
-
-	if (coda_read(dev, CODA_RET_ENC_SEQ_SUCCESS) == 0) {
-		v4l2_err(v4l2_dev, "CODA_COMMAND_SEQ_INIT failed\n");
-		ret = -EFAULT;
-		goto out;
-	}
-
-	if (dev->devtype->product == CODA_960)
-		ctx->num_internal_frames = 4;
-	else
-		ctx->num_internal_frames = 2;
-	ret = coda_alloc_framebuffers(ctx, q_data_src, dst_fourcc);
-	if (ret < 0) {
-		v4l2_err(v4l2_dev, "failed to allocate framebuffers\n");
-		goto out;
-	}
-
-	coda_write(dev, ctx->num_internal_frames, CODA_CMD_SET_FRAME_BUF_NUM);
-	coda_write(dev, q_data_src->bytesperline,
-			CODA_CMD_SET_FRAME_BUF_STRIDE);
-	if (dev->devtype->product == CODA_7541) {
-		coda_write(dev, q_data_src->bytesperline,
-				CODA7_CMD_SET_FRAME_SOURCE_BUF_STRIDE);
-	}
-	if (dev->devtype->product != CODA_DX6) {
-		coda_write(dev, ctx->iram_info.buf_bit_use,
-				CODA7_CMD_SET_FRAME_AXI_BIT_ADDR);
-		coda_write(dev, ctx->iram_info.buf_ip_ac_dc_use,
-				CODA7_CMD_SET_FRAME_AXI_IPACDC_ADDR);
-		coda_write(dev, ctx->iram_info.buf_dbk_y_use,
-				CODA7_CMD_SET_FRAME_AXI_DBKY_ADDR);
-		coda_write(dev, ctx->iram_info.buf_dbk_c_use,
-				CODA7_CMD_SET_FRAME_AXI_DBKC_ADDR);
-		coda_write(dev, ctx->iram_info.buf_ovl_use,
-				CODA7_CMD_SET_FRAME_AXI_OVL_ADDR);
-		if (dev->devtype->product == CODA_960) {
-			coda_write(dev, ctx->iram_info.buf_btp_use,
-					CODA9_CMD_SET_FRAME_AXI_BTP_ADDR);
-
-			/* FIXME */
-			coda_write(dev, ctx->internal_frames[2].paddr, CODA9_CMD_SET_FRAME_SUBSAMP_A);
-			coda_write(dev, ctx->internal_frames[3].paddr, CODA9_CMD_SET_FRAME_SUBSAMP_B);
-		}
-	}
-
-	ret = coda_command_sync(ctx, CODA_COMMAND_SET_FRAME_BUF);
-	if (ret < 0) {
-		v4l2_err(v4l2_dev, "CODA_COMMAND_SET_FRAME_BUF timeout\n");
-		goto out;
-	}
-
-	/* Save stream headers */
-	buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
-	switch (dst_fourcc) {
-	case V4L2_PIX_FMT_H264:
-		/*
-		 * Get SPS in the first frame and copy it to an
-		 * intermediate buffer.
-		 */
-		ret = coda_encode_header(ctx, buf, CODA_HEADER_H264_SPS,
-					 &ctx->vpu_header[0][0],
-					 &ctx->vpu_header_size[0]);
-		if (ret < 0)
-			goto out;
-
-		/*
-		 * Get PPS in the first frame and copy it to an
-		 * intermediate buffer.
-		 */
-		ret = coda_encode_header(ctx, buf, CODA_HEADER_H264_PPS,
-					 &ctx->vpu_header[1][0],
-					 &ctx->vpu_header_size[1]);
-		if (ret < 0)
-			goto out;
-
-		/*
-		 * Length of H.264 headers is variable and thus it might not be
-		 * aligned for the coda to append the encoded frame. In that is
-		 * the case a filler NAL must be added to header 2.
-		 */
-		ctx->vpu_header_size[2] = coda_h264_padding(
-					(ctx->vpu_header_size[0] +
-					 ctx->vpu_header_size[1]),
-					 ctx->vpu_header[2]);
-		break;
-	case V4L2_PIX_FMT_MPEG4:
-		/*
-		 * Get VOS in the first frame and copy it to an
-		 * intermediate buffer
-		 */
-		ret = coda_encode_header(ctx, buf, CODA_HEADER_MP4V_VOS,
-					 &ctx->vpu_header[0][0],
-					 &ctx->vpu_header_size[0]);
-		if (ret < 0)
-			goto out;
-
-		ret = coda_encode_header(ctx, buf, CODA_HEADER_MP4V_VIS,
-					 &ctx->vpu_header[1][0],
-					 &ctx->vpu_header_size[1]);
-		if (ret < 0)
-			goto out;
-
-		ret = coda_encode_header(ctx, buf, CODA_HEADER_MP4V_VOL,
-					 &ctx->vpu_header[2][0],
-					 &ctx->vpu_header_size[2]);
-		if (ret < 0)
-			goto out;
-		break;
-	default:
-		/* No more formats need to save headers at the moment */
-		break;
-	}
-
-out:
-	mutex_unlock(&dev->coda_mutex);
 	return ret;
 }
 
···
 	return vb2_queue_init(vq);
 }
 
-static int coda_encoder_queue_init(void *priv, struct vb2_queue *src_vq,
-				   struct vb2_queue *dst_vq)
+int coda_encoder_queue_init(void *priv, struct vb2_queue *src_vq,
+			    struct vb2_queue *dst_vq)
 {
 	int ret;
 
···
 	return coda_queue_init(priv, dst_vq);
 }
 
-static int coda_decoder_queue_init(void *priv, struct vb2_queue *src_vq,
-				   struct vb2_queue *dst_vq)
+int coda_decoder_queue_init(void *priv, struct vb2_queue *src_vq,
+			    struct vb2_queue *dst_vq)
 {
 	int ret;
 
···
 	return ret;
 }
 
-static void coda_bit_release(struct coda_ctx *ctx)
-{
-	coda_free_framebuffers(ctx);
-	coda_free_context_buffers(ctx);
-}
-
-struct coda_context_ops coda_encode_ops = {
-	.queue_init = coda_encoder_queue_init,
-	.start_streaming = coda_start_encoding,
-	.prepare_run = coda_prepare_encode,
-	.finish_run = coda_finish_encode,
-	.seq_end_work = coda_seq_end_work,
-	.release = coda_bit_release,
-};
-
-struct coda_context_ops coda_decode_ops = {
-	.queue_init = coda_decoder_queue_init,
-	.start_streaming = coda_start_decoding,
-	.prepare_run = coda_prepare_decode,
-	.finish_run = coda_finish_decode,
-	.seq_end_work = coda_seq_end_work,
-	.release = coda_bit_release,
-};
-
 static int coda_encoder_open(struct file *file)
 {
-	return coda_open(file, CODA_INST_ENCODER, &coda_encode_ops);
+	return coda_open(file, CODA_INST_ENCODER, &coda_bit_encode_ops);
 }
 
 static int coda_decoder_open(struct file *file)
 {
-	return coda_open(file, CODA_INST_DECODER, &coda_decode_ops);
+	return coda_open(file, CODA_INST_DECODER, &coda_bit_decode_ops);
 }
 
 static int coda_release(struct file *file)
···
 	.unlocked_ioctl	= video_ioctl2,
 	.mmap		= v4l2_m2m_fop_mmap,
 };
-
-static void coda_finish_decode(struct coda_ctx *ctx)
-{
-	struct coda_dev *dev = ctx->dev;
-	struct coda_q_data *q_data_src;
-	struct coda_q_data *q_data_dst;
-	struct vb2_buffer *dst_buf;
-	struct coda_timestamp *ts;
-	int width, height;
-	int decoded_idx;
-	int display_idx;
-	u32 src_fourcc;
-	int success;
-	u32 err_mb;
-	u32 val;
-
-	dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
-
-	/* Update kfifo out pointer from coda bitstream read pointer */
-	coda_kfifo_sync_from_device(ctx);
-
-	/*
-	 * in stream-end mode, the read pointer can overshoot the write pointer
-	 * by up to 512 bytes
-	 */
-	if (ctx->bit_stream_param & CODA_BIT_STREAM_END_FLAG) {
-		if (coda_get_bitstream_payload(ctx) >= CODA_MAX_FRAME_SIZE - 512)
-			kfifo_init(&ctx->bitstream_fifo,
-				ctx->bitstream.vaddr, ctx->bitstream.size);
-	}
-
-	q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
-	src_fourcc = q_data_src->fourcc;
-
-	val = coda_read(dev, CODA_RET_DEC_PIC_SUCCESS);
-	if (val != 1)
-		pr_err("DEC_PIC_SUCCESS = %d\n", val);
-
-	success = val & 0x1;
-	if (!success)
-		v4l2_err(&dev->v4l2_dev, "decode failed\n");
-
-	if (src_fourcc == V4L2_PIX_FMT_H264) {
-		if (val & (1 << 3))
-			v4l2_err(&dev->v4l2_dev,
-				 "insufficient PS buffer space (%d bytes)\n",
-				 ctx->psbuf.size);
-		if (val & (1 << 2))
-			v4l2_err(&dev->v4l2_dev,
-				 "insufficient slice buffer space (%d bytes)\n",
-				 ctx->slicebuf.size);
-	}
-
-	val = coda_read(dev, CODA_RET_DEC_PIC_SIZE);
-	width = (val >> 16) & 0xffff;
-	height = val & 0xffff;
-
-	q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
-
-	/* frame crop information */
-	if (src_fourcc == V4L2_PIX_FMT_H264) {
-		u32 left_right;
-		u32 top_bottom;
-
-		left_right = coda_read(dev, CODA_RET_DEC_PIC_CROP_LEFT_RIGHT);
-		top_bottom = coda_read(dev, CODA_RET_DEC_PIC_CROP_TOP_BOTTOM);
-
-		if (left_right == 0xffffffff && top_bottom == 0xffffffff) {
-			/* Keep current crop information */
-		} else {
-			struct v4l2_rect *rect = &q_data_dst->rect;
-
-			rect->left = left_right >> 16 & 0xffff;
-			rect->top = top_bottom >> 16 & 0xffff;
-			rect->width = width - rect->left -
-				      (left_right & 0xffff);
-			rect->height = height - rect->top -
-				       (top_bottom & 0xffff);
-		}
-	} else {
-		/* no cropping */
-	}
-
-	err_mb = coda_read(dev, CODA_RET_DEC_PIC_ERR_MB);
-	if (err_mb > 0)
-		v4l2_err(&dev->v4l2_dev,
-			 "errors in %d macroblocks\n", err_mb);
-
-	if (dev->devtype->product == CODA_7541) {
-		val = coda_read(dev, CODA_RET_DEC_PIC_OPTION);
-		if (val == 0) {
-			/* not enough bitstream data */
-			v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
-				 "prescan failed: %d\n", val);
-			ctx->hold = true;
-			return;
-		}
-	}
-
-	ctx->frm_dis_flg = coda_read(dev, CODA_REG_BIT_FRM_DIS_FLG(ctx->reg_idx));
-
-	/*
-	 * The previous display frame was copied out by the rotator,
-	 * now it can be overwritten again
-	 */
-	if (ctx->display_idx >= 0 &&
-	    ctx->display_idx < ctx->num_internal_frames) {
-		ctx->frm_dis_flg &= ~(1 << ctx->display_idx);
-		coda_write(dev, ctx->frm_dis_flg,
-				CODA_REG_BIT_FRM_DIS_FLG(ctx->reg_idx));
-	}
-
-	/*
-	 * The index of the last decoded frame, not necessarily in
-	 * display order, and the index of the next display frame.
-	 * The latter could have been decoded in a previous run.
-	 */
-	decoded_idx = coda_read(dev, CODA_RET_DEC_PIC_CUR_IDX);
-	display_idx = coda_read(dev, CODA_RET_DEC_PIC_FRAME_IDX);
-
-	if (decoded_idx == -1) {
-		/* no frame was decoded, but we might have a display frame */
-		if (display_idx >= 0 && display_idx < ctx->num_internal_frames)
-			ctx->sequence_offset++;
-		else if (ctx->display_idx < 0)
-			ctx->hold = true;
-	} else if (decoded_idx == -2) {
-		/* no frame was decoded, we still return the remaining buffers */
-	} else if (decoded_idx < 0 || decoded_idx >= ctx->num_internal_frames) {
-		v4l2_err(&dev->v4l2_dev,
-			 "decoded frame index out of range: %d\n", decoded_idx);
-	} else {
-		ts = list_first_entry(&ctx->timestamp_list,
-				      struct coda_timestamp, list);
-		list_del(&ts->list);
-		val = coda_read(dev, CODA_RET_DEC_PIC_FRAME_NUM) - 1;
-		val -= ctx->sequence_offset;
-		if (val != (ts->sequence & 0xffff)) {
-			v4l2_err(&dev->v4l2_dev,
-				 "sequence number mismatch (%d(%d) != %d)\n",
-				 val, ctx->sequence_offset, ts->sequence);
-		}
-		ctx->frame_timestamps[decoded_idx] = *ts;
-		kfree(ts);
-
-		val = coda_read(dev, CODA_RET_DEC_PIC_TYPE) & 0x7;
-		if (val == 0)
-			ctx->frame_types[decoded_idx] = V4L2_BUF_FLAG_KEYFRAME;
-		else if (val == 1)
-			ctx->frame_types[decoded_idx] = V4L2_BUF_FLAG_PFRAME;
-		else
-			ctx->frame_types[decoded_idx] = V4L2_BUF_FLAG_BFRAME;
-
-		ctx->frame_errors[decoded_idx] = err_mb;
-	}
-
-	if (display_idx == -1) {
-		/*
-		 * no more frames to be decoded, but there could still
-		 * be rotator output to dequeue
-		 */
-		ctx->hold = true;
-	} else if (display_idx == -3) {
-		/* possibly prescan failure */
-	} else if (display_idx < 0 || display_idx >= ctx->num_internal_frames) {
-		v4l2_err(&dev->v4l2_dev,
-			 "presentation frame index out of range: %d\n",
-			 display_idx);
-	}
-
-	/* If a frame was copied out, return it */
-	if (ctx->display_idx >= 0 &&
-	    ctx->display_idx < ctx->num_internal_frames) {
-		dst_buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
-		dst_buf->v4l2_buf.sequence = ctx->osequence++;
-
-		dst_buf->v4l2_buf.flags &= ~(V4L2_BUF_FLAG_KEYFRAME |
-					     V4L2_BUF_FLAG_PFRAME |
-					     V4L2_BUF_FLAG_BFRAME);
-		dst_buf->v4l2_buf.flags |= ctx->frame_types[ctx->display_idx];
-		ts = &ctx->frame_timestamps[ctx->display_idx];
-		dst_buf->v4l2_buf.timecode = ts->timecode;
-		dst_buf->v4l2_buf.timestamp = ts->timestamp;
-
-		vb2_set_plane_payload(dst_buf, 0, width * height * 3 / 2);
-
-		v4l2_m2m_buf_done(dst_buf, ctx->frame_errors[display_idx] ?
-				  VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE);
-
-		v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
-			"job finished: decoding frame (%d) (%s)\n",
-			dst_buf->v4l2_buf.sequence,
-			(dst_buf->v4l2_buf.flags & V4L2_BUF_FLAG_KEYFRAME) ?
-			"KEYFRAME" : "PFRAME");
-	} else {
-		v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
-			"job finished: no frame decoded\n");
-	}
-
-	/* The rotator will copy the current display frame next time */
-	ctx->display_idx = display_idx;
-}
-
-static void coda_finish_encode(struct coda_ctx *ctx)
-{
-	struct vb2_buffer *src_buf, *dst_buf;
-	struct coda_dev *dev = ctx->dev;
-	u32 wr_ptr, start_ptr;
-
-	src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
-	dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
-
-	/* Get results from the coda */
-	start_ptr = coda_read(dev, CODA_CMD_ENC_PIC_BB_START);
-	wr_ptr = coda_read(dev, CODA_REG_BIT_WR_PTR(ctx->reg_idx));
-
-	/* Calculate bytesused field */
-	if (dst_buf->v4l2_buf.sequence == 0) {
-		vb2_set_plane_payload(dst_buf, 0, wr_ptr - start_ptr +
-					ctx->vpu_header_size[0] +
-					ctx->vpu_header_size[1] +
-					ctx->vpu_header_size[2]);
-	} else {
-		vb2_set_plane_payload(dst_buf, 0, wr_ptr - start_ptr);
-	}
-
-	v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev, "frame size = %u\n",
-		 wr_ptr - start_ptr);
-
-	coda_read(dev, CODA_RET_ENC_PIC_SLICE_NUM);
-	coda_read(dev, CODA_RET_ENC_PIC_FLAG);
-
-	if (coda_read(dev, CODA_RET_ENC_PIC_TYPE) == 0) {
-		dst_buf->v4l2_buf.flags |= V4L2_BUF_FLAG_KEYFRAME;
-		dst_buf->v4l2_buf.flags &= ~V4L2_BUF_FLAG_PFRAME;
-	} else {
-		dst_buf->v4l2_buf.flags |= V4L2_BUF_FLAG_PFRAME;
-		dst_buf->v4l2_buf.flags &= ~V4L2_BUF_FLAG_KEYFRAME;
-	}
-
-	dst_buf->v4l2_buf.timestamp = src_buf->v4l2_buf.timestamp;
-	dst_buf->v4l2_buf.flags &= ~V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
-	dst_buf->v4l2_buf.flags |=
-		src_buf->v4l2_buf.flags & V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
-	dst_buf->v4l2_buf.timecode = src_buf->v4l2_buf.timecode;
-
-	v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
-
-	dst_buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
-	v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE);
-
-	ctx->gopcounter--;
-	if (ctx->gopcounter < 0)
-		ctx->gopcounter = ctx->params.gop_size - 1;
-
-	v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
-		"job finished: encoding frame (%d) (%s)\n",
-		dst_buf->v4l2_buf.sequence,
-		(dst_buf->v4l2_buf.flags & V4L2_BUF_FLAG_KEYFRAME) ?
-		"KEYFRAME" : "PFRAME");
-}
-
-static irqreturn_t coda_irq_handler(int irq, void *data)
-{
-	struct coda_dev *dev = data;
-	struct coda_ctx *ctx;
-
-	/* read status register to attend the IRQ */
-	coda_read(dev, CODA_REG_BIT_INT_STATUS);
-	coda_write(dev, CODA_REG_BIT_INT_CLEAR_SET,
-		      CODA_REG_BIT_INT_CLEAR);
-
-	ctx = v4l2_m2m_get_curr_priv(dev->m2m_dev);
-	if (ctx == NULL) {
-		v4l2_err(&dev->v4l2_dev, "Instance released before the end of transaction\n");
-		mutex_unlock(&dev->coda_mutex);
-		return IRQ_HANDLED;
-	}
-
-	if (ctx->aborting) {
-		v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
-			 "task has been aborted\n");
-	}
-
-	if (coda_isbusy(ctx->dev)) {
-		v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
-			 "coda is still busy!!!!\n");
-		return IRQ_NONE;
-	}
-
-	complete(&ctx->completion);
-
-	return IRQ_HANDLED;
-}
-
-static u32 coda_supported_firmwares[] = {
-	CODA_FIRMWARE_VERNUM(CODA_DX6, 2, 2, 5),
-	CODA_FIRMWARE_VERNUM(CODA_7541, 1, 4, 50),
-	CODA_FIRMWARE_VERNUM(CODA_960, 2, 1, 5),
-};
-
-static bool coda_firmware_supported(u32 vernum)
-{
-	int i;
-
-	for (i = 0; i < ARRAY_SIZE(coda_supported_firmwares); i++)
-		if (vernum == coda_supported_firmwares[i])
-			return true;
-	return false;
-}
 
 static int coda_hw_init(struct coda_dev *dev)
 {
···
 
 	return 0;
 
-err_clk_ahb:
-	clk_disable_unprepare(dev->clk_per);
-err_clk_per:
-	return ret;
-}
-
-static int coda_check_firmware(struct coda_dev *dev)
-{
-	u16 product, major, minor, release;
-	u32 data;
-	int ret;
-
-	ret = clk_prepare_enable(dev->clk_per);
-	if (ret)
-		goto err_clk_per;
-
-	ret = clk_prepare_enable(dev->clk_ahb);
-	if (ret)
-		goto err_clk_ahb;
-
-	coda_write(dev, 0, CODA_CMD_FIRMWARE_VERNUM);
-	coda_write(dev, CODA_REG_BIT_BUSY_FLAG, CODA_REG_BIT_BUSY);
-	coda_write(dev, 0, CODA_REG_BIT_RUN_INDEX);
-	coda_write(dev, 0, CODA_REG_BIT_RUN_COD_STD);
-	coda_write(dev, CODA_COMMAND_FIRMWARE_GET, CODA_REG_BIT_RUN_COMMAND);
-	if (coda_wait_timeout(dev)) {
-		v4l2_err(&dev->v4l2_dev, "firmware get command error\n");
-		ret = -EIO;
-		goto err_run_cmd;
-	}
-
-	if (dev->devtype->product == CODA_960) {
-		data = coda_read(dev, CODA9_CMD_FIRMWARE_CODE_REV);
-		v4l2_info(&dev->v4l2_dev, "Firmware code revision: %d\n",
-			  data);
-	}
-
-	/* Check we are compatible with the loaded firmware */
-	data = coda_read(dev, CODA_CMD_FIRMWARE_VERNUM);
-	product = CODA_FIRMWARE_PRODUCT(data);
-	major = CODA_FIRMWARE_MAJOR(data);
-	minor = CODA_FIRMWARE_MINOR(data);
-	release = CODA_FIRMWARE_RELEASE(data);
-
-	clk_disable_unprepare(dev->clk_per);
-	clk_disable_unprepare(dev->clk_ahb);
-
-	if (product != dev->devtype->product) {
-		v4l2_err(&dev->v4l2_dev, "Wrong firmware. Hw: %s, Fw: %s,"
-			 " Version: %u.%u.%u\n",
-			 coda_product_name(dev->devtype->product),
-			 coda_product_name(product), major, minor, release);
-		return -EINVAL;
-	}
-
-	v4l2_info(&dev->v4l2_dev, "Initialized %s.\n",
-		  coda_product_name(product));
-
-	if (coda_firmware_supported(data)) {
-		v4l2_info(&dev->v4l2_dev, "Firmware version: %u.%u.%u\n",
-			  major, minor, release);
-	} else {
-		v4l2_warn(&dev->v4l2_dev, "Unsupported firmware version: "
-			  "%u.%u.%u\n", major, minor, release);
-	}
-
-	return 0;
-
-err_run_cmd:
-	clk_disable_unprepare(dev->clk_ahb);
 err_clk_ahb:
 	clk_disable_unprepare(dev->clk_per);
 err_clk_per:

drivers/media/platform/coda/coda.h

···
 	struct dentry			*debugfs_entry;
 };
 
+extern int coda_debug;
+
+void coda_write(struct coda_dev *dev, u32 data, u32 reg);
+unsigned int coda_read(struct coda_dev *dev, u32 reg);
+
+int coda_alloc_aux_buf(struct coda_dev *dev, struct coda_aux_buf *buf,
+		       size_t size, const char *name, struct dentry *parent);
+void coda_free_aux_buf(struct coda_dev *dev, struct coda_aux_buf *buf);
+
+static inline int coda_alloc_context_buf(struct coda_ctx *ctx,
+					 struct coda_aux_buf *buf, size_t size,
+					 const char *name)
+{
+	return coda_alloc_aux_buf(ctx->dev, buf, size, name, ctx->debugfs_entry);
+}
+
+int coda_encoder_queue_init(void *priv, struct vb2_queue *src_vq,
+			    struct vb2_queue *dst_vq);
+int coda_decoder_queue_init(void *priv, struct vb2_queue *src_vq,
+			    struct vb2_queue *dst_vq);
+
+int coda_hw_reset(struct coda_ctx *ctx);
+
+void coda_fill_bitstream(struct coda_ctx *ctx);
+
+void coda_set_gdi_regs(struct coda_ctx *ctx);
+
+static inline struct coda_q_data *get_q_data(struct coda_ctx *ctx,
+					     enum v4l2_buf_type type)
+{
+	switch (type) {
+	case V4L2_BUF_TYPE_VIDEO_OUTPUT:
+		return &(ctx->q_data[V4L2_M2M_SRC]);
+	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
+		return &(ctx->q_data[V4L2_M2M_DST]);
+	default:
+		return NULL;
+	}
+}
+
+const char *coda_product_name(int product);
+
+int coda_check_firmware(struct coda_dev *dev);
+
+static inline int coda_get_bitstream_payload(struct coda_ctx *ctx)
+{
+	return kfifo_len(&ctx->bitstream_fifo);
+}
+
+void coda_bit_stream_end_flag(struct coda_ctx *ctx);
+
 int coda_h264_padding(int size, char *p);
+
+extern const struct coda_context_ops coda_bit_encode_ops;
+extern const struct coda_context_ops coda_bit_decode_ops;
+
+irqreturn_t coda_irq_handler(int irq, void *data);