OSCL-LXR linux-6.0.1/​drivers/​media/​platform/​chips-media/​coda-bit.c	Source navigation Diff markup Identifier search General search
	Version: linux-6.0.1 spark-3.0.0 hadoop-3.2.0-src hadoop-3.3.0-src spark-2.4.7 linux-4.15.13 hadoop-2.7.4-src Revert   Change

 // SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * Coda multi-standard codec IP - BIT processor functions
  *
  * Copyright (C) 2012 Vista Silicon S.L.
  *    Javier Martin, <javier.martin@vista-silicon.com>
  *    Xavier Duret
  * Copyright (C) 2012-2014 Philipp Zabel, Pengutronix
  */
 
 #include <linux/clk.h>
 #include <linux/irqreturn.h>
 #include <linux/kernel.h>
 #include <linux/log2.h>
 #include <linux/platform_device.h>
 #include <linux/ratelimit.h>
 #include <linux/reset.h>
 #include <linux/slab.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-v4l2.h>
 #include <media/videobuf2-dma-contig.h>
 #include <media/videobuf2-vmalloc.h>
 
 #include "coda.h"
 #include "imx-vdoa.h"
 #define CREATE_TRACE_POINTS
 #include "trace.h"
 
 #define CODA_PARA_BUF_SIZE  (10 * 1024)
 #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 void coda_free_bitstream_buffer(struct coda_ctx *ctx);
 
 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_HX4 ||
         dev->devtype->product == CODA_7541 ||
         dev->devtype->product == CODA_960) {
         /* 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);
 
     trace_coda_bit_run(ctx, cmd);
 
     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;
     int ret;
 
     lockdep_assert_held(&dev->coda_mutex);
 
     coda_command_async(ctx, cmd);
     ret = coda_wait_timeout(dev);
     trace_coda_bit_done(ctx);
 
     return ret;
 }
 
 int coda_hw_reset(struct coda_ctx *ctx)
 {
     struct coda_dev *dev = ctx->dev;
     unsigned long timeout;
     unsigned int idx;
     int ret;
 
     lockdep_assert_held(&dev->coda_mutex);
 
     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_h264_bitstream_pad(struct coda_ctx *ctx, u32 size)
 {
     unsigned char *buf;
     u32 n;
 
     if (size < 6)
         size = 6;
 
     buf = kmalloc(size, GFP_KERNEL);
     if (!buf)
         return -ENOMEM;
 
     coda_h264_filler_nal(size, buf);
     n = kfifo_in(&ctx->bitstream_fifo, buf, size);
     kfree(buf);
 
     return (n < size) ? -ENOSPC : 0;
 }
 
 int coda_bitstream_flush(struct coda_ctx *ctx)
 {
     int ret;
 
     if (ctx->inst_type != CODA_INST_DECODER || !ctx->use_bit)
         return 0;
 
     ret = coda_command_sync(ctx, CODA_COMMAND_DEC_BUF_FLUSH);
     if (ret < 0) {
         v4l2_err(&ctx->dev->v4l2_dev, "failed to flush bitstream\n");
         return ret;
     }
 
     kfifo_init(&ctx->bitstream_fifo, ctx->bitstream.vaddr,
            ctx->bitstream.size);
     coda_kfifo_sync_to_device_full(ctx);
 
     return 0;
 }
 
 static int coda_bitstream_queue(struct coda_ctx *ctx, const u8 *buf, u32 size)
 {
     u32 n = kfifo_in(&ctx->bitstream_fifo, buf, size);
 
     return (n < size) ? -ENOSPC : 0;
 }
 
 static u32 coda_buffer_parse_headers(struct coda_ctx *ctx,
                      struct vb2_v4l2_buffer *src_buf,
                      u32 payload)
 {
     u8 *vaddr = vb2_plane_vaddr(&src_buf->vb2_buf, 0);
     u32 size = 0;
 
     switch (ctx->codec->src_fourcc) {
     case V4L2_PIX_FMT_MPEG2:
         size = coda_mpeg2_parse_headers(ctx, vaddr, payload);
         break;
     case V4L2_PIX_FMT_MPEG4:
         size = coda_mpeg4_parse_headers(ctx, vaddr, payload);
         break;
     default:
         break;
     }
 
     return size;
 }
 
 static bool coda_bitstream_try_queue(struct coda_ctx *ctx,
                      struct vb2_v4l2_buffer *src_buf)
 {
     unsigned long payload = vb2_get_plane_payload(&src_buf->vb2_buf, 0);
     u8 *vaddr = vb2_plane_vaddr(&src_buf->vb2_buf, 0);
     int ret;
     int i;
 
     if (coda_get_bitstream_payload(ctx) + payload + 512 >=
         ctx->bitstream.size)
         return false;
 
     if (!vaddr) {
         v4l2_err(&ctx->dev->v4l2_dev, "trying to queue empty buffer\n");
         return true;
     }
 
     if (ctx->qsequence == 0 && payload < 512) {
         /*
          * Add padding after the first buffer, if it is too small to be
          * fetched by the CODA, by repeating the headers. Without
          * repeated headers, or the first frame already queued, decoder
          * sequence initialization fails with error code 0x2000 on i.MX6
          * or error code 0x1 on i.MX51.
          */
         u32 header_size = coda_buffer_parse_headers(ctx, src_buf,
                                 payload);
 
         if (header_size) {
             coda_dbg(1, ctx, "pad with %u-byte header\n",
                  header_size);
             for (i = payload; i < 512; i += header_size) {
                 ret = coda_bitstream_queue(ctx, vaddr,
                                header_size);
                 if (ret < 0) {
                     v4l2_err(&ctx->dev->v4l2_dev,
                          "bitstream buffer overflow\n");
                     return false;
                 }
                 if (ctx->dev->devtype->product == CODA_960)
                     break;
             }
         } else {
             coda_dbg(1, ctx,
                  "could not parse header, sequence initialization might fail\n");
         }
 
         /* Add padding before the first buffer, if it is too small */
         if (ctx->codec->src_fourcc == V4L2_PIX_FMT_H264)
             coda_h264_bitstream_pad(ctx, 512 - payload);
     }
 
     ret = coda_bitstream_queue(ctx, vaddr, payload);
     if (ret < 0) {
         v4l2_err(&ctx->dev->v4l2_dev, "bitstream buffer overflow\n");
         return false;
     }
 
     src_buf->sequence = ctx->qsequence++;
 
     /* Sync read pointer to device */
     if (ctx == v4l2_m2m_get_curr_priv(ctx->dev->m2m_dev))
         coda_kfifo_sync_to_device_write(ctx);
 
     /* Set the stream-end flag after the last buffer is queued */
     if (src_buf->flags & V4L2_BUF_FLAG_LAST)
         coda_bit_stream_end_flag(ctx);
     ctx->hold = false;
 
     return true;
 }
 
 void coda_fill_bitstream(struct coda_ctx *ctx, struct list_head *buffer_list)
 {
     struct vb2_v4l2_buffer *src_buf;
     struct coda_buffer_meta *meta;
     u32 start;
 
     lockdep_assert_held(&ctx->bitstream_mutex);
 
     if (ctx->bit_stream_param & CODA_BIT_STREAM_END_FLAG)
         return;
 
     while (v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx) > 0) {
         /*
          * Only queue two JPEGs into the bitstream buffer to keep
          * latency low. We need at least one complete buffer and the
          * header of another buffer (for prescan) in the bitstream.
          */
         if (ctx->codec->src_fourcc == V4L2_PIX_FMT_JPEG &&
             ctx->num_metas > 1)
             break;
 
         if (ctx->num_internal_frames &&
             ctx->num_metas >= ctx->num_internal_frames) {
             meta = list_first_entry(&ctx->buffer_meta_list,
                         struct coda_buffer_meta, list);
 
             /*
              * If we managed to fill in at least a full reorder
              * window of buffers (num_internal_frames is a
              * conservative estimate for this) and the bitstream
              * prefetcher has at least 2 256 bytes periods beyond
              * the first buffer to fetch, we can safely stop queuing
              * in order to limit the decoder drain latency.
              */
             if (coda_bitstream_can_fetch_past(ctx, meta->end))
                 break;
         }
 
         src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
 
         /* Drop frames that do not start/end with a SOI/EOI markers */
         if (ctx->codec->src_fourcc == V4L2_PIX_FMT_JPEG &&
             !coda_jpeg_check_buffer(ctx, &src_buf->vb2_buf)) {
             v4l2_err(&ctx->dev->v4l2_dev,
                  "dropping invalid JPEG frame %d\n",
                  ctx->qsequence);
             src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
             if (buffer_list) {
                 struct v4l2_m2m_buffer *m2m_buf;
 
                 m2m_buf = container_of(src_buf,
                                struct v4l2_m2m_buffer,
                                vb);
                 list_add_tail(&m2m_buf->list, buffer_list);
             } else {
                 v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_ERROR);
             }
             continue;
         }
 
         /* Dump empty buffers */
         if (!vb2_get_plane_payload(&src_buf->vb2_buf, 0)) {
             src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
             v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
             continue;
         }
 
         /* Buffer start position */
         start = ctx->bitstream_fifo.kfifo.in;
 
         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);
 
             meta = kmalloc(sizeof(*meta), GFP_KERNEL);
             if (meta) {
                 meta->sequence = src_buf->sequence;
                 meta->timecode = src_buf->timecode;
                 meta->timestamp = src_buf->vb2_buf.timestamp;
                 meta->start = start;
                 meta->end = ctx->bitstream_fifo.kfifo.in;
                 meta->last = src_buf->flags & V4L2_BUF_FLAG_LAST;
                 if (meta->last)
                     coda_dbg(1, ctx, "marking last meta");
                 spin_lock(&ctx->buffer_meta_lock);
                 list_add_tail(&meta->list,
                           &ctx->buffer_meta_list);
                 ctx->num_metas++;
                 spin_unlock(&ctx->buffer_meta_lock);
 
                 trace_coda_bit_queue(ctx, src_buf, meta);
             }
 
             if (buffer_list) {
                 struct v4l2_m2m_buffer *m2m_buf;
 
                 m2m_buf = container_of(src_buf,
                                struct v4l2_m2m_buffer,
                                vb);
                 list_add_tail(&m2m_buf->list, buffer_list);
             } else {
                 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 this context is currently running, update the hardware flag */
     if ((dev->devtype->product == CODA_960) &&
         coda_isbusy(dev) &&
         (ctx->idx == coda_read(dev, CODA_REG_BIT_RUN_INDEX))) {
         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 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_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].buf);
 }
 
 static int coda_alloc_framebuffers(struct coda_ctx *ctx,
                    struct coda_q_data *q_data, u32 fourcc)
 {
     struct coda_dev *dev = ctx->dev;
     unsigned int ysize, ycbcr_size;
     int ret;
     int i;
 
     if (ctx->codec->src_fourcc == V4L2_PIX_FMT_H264 ||
         ctx->codec->dst_fourcc == V4L2_PIX_FMT_H264 ||
         ctx->codec->src_fourcc == V4L2_PIX_FMT_MPEG4 ||
         ctx->codec->dst_fourcc == V4L2_PIX_FMT_MPEG4)
         ysize = round_up(q_data->rect.width, 16) *
             round_up(q_data->rect.height, 16);
     else
         ysize = round_up(q_data->rect.width, 8) * q_data->rect.height;
 
     if (ctx->tiled_map_type == GDI_TILED_FRAME_MB_RASTER_MAP)
         ycbcr_size = round_up(ysize, 4096) + ysize / 2;
     else
         ycbcr_size = ysize + ysize / 2;
 
     /* Allocate frame buffers */
     for (i = 0; i < ctx->num_internal_frames; i++) {
         size_t size = ycbcr_size;
         char *name;
 
         /* Add space for mvcol buffers */
         if (dev->devtype->product != CODA_DX6 &&
             (ctx->codec->src_fourcc == V4L2_PIX_FMT_H264 ||
              (ctx->codec->src_fourcc == V4L2_PIX_FMT_MPEG4 && i == 0)))
             size += ysize / 4;
         name = kasprintf(GFP_KERNEL, "fb%d", i);
         if (!name) {
             coda_free_framebuffers(ctx);
             return -ENOMEM;
         }
         ret = coda_alloc_context_buf(ctx, &ctx->internal_frames[i].buf,
                          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++) {
         u32 y, cb, cr, mvcol;
 
         /* Start addresses of Y, Cb, Cr planes */
         y = ctx->internal_frames[i].buf.paddr;
         cb = y + ysize;
         cr = y + ysize + ysize/4;
         mvcol = y + ysize + ysize/4 + ysize/4;
         if (ctx->tiled_map_type == GDI_TILED_FRAME_MB_RASTER_MAP) {
             cb = round_up(cb, 4096);
             mvcol = cb + ysize/2;
             cr = 0;
             /* Packed 20-bit MSB of base addresses */
             /* YYYYYCCC, CCyyyyyc, cccc.... */
             y = (y & 0xfffff000) | cb >> 20;
             cb = (cb & 0x000ff000) << 12;
         }
         coda_parabuf_write(ctx, i * 3 + 0, y);
         coda_parabuf_write(ctx, i * 3 + 1, cb);
         coda_parabuf_write(ctx, i * 3 + 2, cr);
 
         if (dev->devtype->product == CODA_DX6)
             continue;
 
         /* mvcol buffer for h.264 and mpeg4 */
         if (ctx->codec->src_fourcc == V4L2_PIX_FMT_H264)
             coda_parabuf_write(ctx, 96 + i, mvcol);
         if (ctx->codec->src_fourcc == V4L2_PIX_FMT_MPEG4 && i == 0)
             coda_parabuf_write(ctx, 97, mvcol);
     }
 
     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);
     coda_free_aux_buf(dev, &ctx->parabuf);
 }
 
 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 (!ctx->parabuf.vaddr) {
         ret = coda_alloc_context_buf(ctx, &ctx->parabuf,
                          CODA_PARA_BUF_SIZE, "parabuf");
         if (ret < 0)
             return ret;
     }
 
     if (dev->devtype->product == CODA_DX6)
         return 0;
 
     if (!ctx->slicebuf.vaddr && q_data->fourcc == V4L2_PIX_FMT_H264) {
         /* worst case slice size */
         size = (DIV_ROUND_UP(q_data->rect.width, 16) *
             DIV_ROUND_UP(q_data->rect.height, 16)) * 3200 / 8 + 512;
         ret = coda_alloc_context_buf(ctx, &ctx->slicebuf, size,
                          "slicebuf");
         if (ret < 0)
             goto err;
     }
 
     if (!ctx->psbuf.vaddr && (dev->devtype->product == CODA_HX4 ||
                   dev->devtype->product == CODA_7541)) {
         ret = coda_alloc_context_buf(ctx, &ctx->psbuf,
                          CODA7_PS_BUF_SIZE, "psbuf");
         if (ret < 0)
             goto err;
     }
 
     if (!ctx->workbuf.vaddr) {
         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)
             goto err;
     }
 
     return 0;
 
 err:
     coda_free_context_buffers(ctx);
     return ret;
 }
 
 static int coda_encode_header(struct coda_ctx *ctx, struct vb2_v4l2_buffer *buf,
                   int header_code, u8 *header, int *size)
 {
     struct vb2_buffer *vb = &buf->vb2_buf;
     struct coda_dev *dev = ctx->dev;
     struct coda_q_data *q_data_src;
     struct v4l2_rect *r;
     size_t bufsize;
     int ret;
     int i;
 
     if (dev->devtype->product == CODA_960)
         memset(vb2_plane_vaddr(vb, 0), 0, 64);
 
     coda_write(dev, vb2_dma_contig_plane_dma_addr(vb, 0),
            CODA_CMD_ENC_HEADER_BB_START);
     bufsize = vb2_plane_size(vb, 0);
     if (dev->devtype->product == CODA_960)
         bufsize /= 1024;
     coda_write(dev, bufsize, CODA_CMD_ENC_HEADER_BB_SIZE);
     if (dev->devtype->product == CODA_960 &&
         ctx->codec->dst_fourcc == V4L2_PIX_FMT_H264 &&
         header_code == CODA_HEADER_H264_SPS) {
         q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
         r = &q_data_src->rect;
 
         if (r->width % 16 || r->height % 16) {
             u32 crop_right = round_up(r->width, 16) -  r->width;
             u32 crop_bottom = round_up(r->height, 16) - r->height;
 
             coda_write(dev, crop_right,
                    CODA9_CMD_ENC_HEADER_FRAME_CROP_H);
             coda_write(dev, crop_bottom,
                    CODA9_CMD_ENC_HEADER_FRAME_CROP_V);
             header_code |= CODA9_HEADER_FRAME_CROP;
         }
     }
     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(vb, 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(vb, 0), *size);
 
     return 0;
 }
 
 static u32 coda_slice_mode(struct coda_ctx *ctx)
 {
     int size, unit;
 
     switch (ctx->params.slice_mode) {
     case V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_SINGLE:
     default:
         return 0;
     case V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_MAX_MB:
         size = ctx->params.slice_max_mb;
         unit = 1;
         break;
     case V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_MAX_BYTES:
         size = ctx->params.slice_max_bits;
         unit = 0;
         break;
     }
 
     return ((size & CODA_SLICING_SIZE_MASK) << CODA_SLICING_SIZE_OFFSET) |
            ((unit & CODA_SLICING_UNIT_MASK) << CODA_SLICING_UNIT_OFFSET) |
            ((1 & CODA_SLICING_MODE_MASK) << CODA_SLICING_MODE_OFFSET);
 }
 
 static int coda_enc_param_change(struct coda_ctx *ctx)
 {
     struct coda_dev *dev = ctx->dev;
     u32 change_enable = 0;
     u32 success;
     int ret;
 
     if (ctx->params.gop_size_changed) {
         change_enable |= CODA_PARAM_CHANGE_RC_GOP;
         coda_write(dev, ctx->params.gop_size,
                CODA_CMD_ENC_PARAM_RC_GOP);
         ctx->gopcounter = ctx->params.gop_size - 1;
         ctx->params.gop_size_changed = false;
     }
     if (ctx->params.h264_intra_qp_changed) {
         coda_dbg(1, ctx, "parameter change: intra Qp %u\n",
              ctx->params.h264_intra_qp);
 
         if (ctx->params.bitrate) {
             change_enable |= CODA_PARAM_CHANGE_RC_INTRA_QP;
             coda_write(dev, ctx->params.h264_intra_qp,
                    CODA_CMD_ENC_PARAM_RC_INTRA_QP);
         }
         ctx->params.h264_intra_qp_changed = false;
     }
     if (ctx->params.bitrate_changed) {
         coda_dbg(1, ctx, "parameter change: bitrate %u kbit/s\n",
              ctx->params.bitrate);
         change_enable |= CODA_PARAM_CHANGE_RC_BITRATE;
         coda_write(dev, ctx->params.bitrate,
                CODA_CMD_ENC_PARAM_RC_BITRATE);
         ctx->params.bitrate_changed = false;
     }
     if (ctx->params.framerate_changed) {
         coda_dbg(1, ctx, "parameter change: frame rate %u/%u Hz\n",
              ctx->params.framerate & 0xffff,
              (ctx->params.framerate >> 16) + 1);
         change_enable |= CODA_PARAM_CHANGE_RC_FRAME_RATE;
         coda_write(dev, ctx->params.framerate,
                CODA_CMD_ENC_PARAM_RC_FRAME_RATE);
         ctx->params.framerate_changed = false;
     }
     if (ctx->params.intra_refresh_changed) {
         coda_dbg(1, ctx, "parameter change: intra refresh MBs %u\n",
              ctx->params.intra_refresh);
         change_enable |= CODA_PARAM_CHANGE_INTRA_MB_NUM;
         coda_write(dev, ctx->params.intra_refresh,
                CODA_CMD_ENC_PARAM_INTRA_MB_NUM);
         ctx->params.intra_refresh_changed = false;
     }
     if (ctx->params.slice_mode_changed) {
         change_enable |= CODA_PARAM_CHANGE_SLICE_MODE;
         coda_write(dev, coda_slice_mode(ctx),
                CODA_CMD_ENC_PARAM_SLICE_MODE);
         ctx->params.slice_mode_changed = false;
     }
 
     if (!change_enable)
         return 0;
 
     coda_write(dev, change_enable, CODA_CMD_ENC_PARAM_CHANGE_ENABLE);
 
     ret = coda_command_sync(ctx, CODA_COMMAND_RC_CHANGE_PARAMETER);
     if (ret < 0)
         return ret;
 
     success = coda_read(dev, CODA_RET_ENC_PARAM_CHANGE_SUCCESS);
     if (success != 1)
         coda_dbg(1, ctx, "parameter change failed: %u\n", success);
 
     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 w64, w128;
     int mb_width;
     int dbk_bits;
     int bit_bits;
     int ip_bits;
     int me_bits;
 
     memset(iram_info, 0, sizeof(*iram_info));
     iram_info->next_paddr = dev->iram.paddr;
     iram_info->remaining = dev->iram.size;
 
     if (!dev->iram.vaddr)
         return;
 
     switch (dev->devtype->product) {
     case CODA_HX4:
         dbk_bits = CODA7_USE_HOST_DBK_ENABLE;
         bit_bits = CODA7_USE_HOST_BIT_ENABLE;
         ip_bits = CODA7_USE_HOST_IP_ENABLE;
         me_bits = CODA7_USE_HOST_ME_ENABLE;
         break;
     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;
         me_bits = CODA7_USE_HOST_ME_ENABLE | CODA7_USE_ME_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;
         me_bits = 0;
         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->rect.width, 16);
         w128 = mb_width * 128;
         w64 = mb_width * 64;
 
         /* Prioritize in case IRAM is too small for everything */
         if (dev->devtype->product == CODA_HX4 ||
             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 |= me_bits;
         }
 
         /* Only H.264BP and H.263P3 are considered */
         iram_info->buf_dbk_y_use = coda_iram_alloc(iram_info, w64);
         iram_info->buf_dbk_c_use = coda_iram_alloc(iram_info, w64);
         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, w128);
         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, w128);
         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);
         w128 = mb_width * 128;
 
         iram_info->buf_dbk_y_use = coda_iram_alloc(iram_info, w128);
         iram_info->buf_dbk_c_use = coda_iram_alloc(iram_info, w128);
         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, w128);
         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, w128);
         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))
         coda_dbg(1, ctx, "IRAM smaller than needed\n");
 
     if (dev->devtype->product == CODA_HX4 ||
         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_HX4, 1, 4, 50),
     CODA_FIRMWARE_VERNUM(CODA_7541, 1, 4, 50),
     CODA_FIRMWARE_VERNUM(CODA_960, 2, 1, 5),
     CODA_FIRMWARE_VERNUM(CODA_960, 2, 1, 9),
     CODA_FIRMWARE_VERNUM(CODA_960, 2, 3, 10),
     CODA_FIRMWARE_VERNUM(CODA_960, 3, 1, 1),
 };
 
 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;
 }
 
 static void coda9_set_frame_cache(struct coda_ctx *ctx, u32 fourcc)
 {
     u32 cache_size, cache_config;
 
     if (ctx->tiled_map_type == GDI_LINEAR_FRAME_MAP) {
         /* Luma 2x0 page, 2x6 cache, chroma 2x0 page, 2x4 cache size */
         cache_size = 0x20262024;
         cache_config = 2 << CODA9_CACHE_PAGEMERGE_OFFSET;
     } else {
         /* Luma 0x2 page, 4x4 cache, chroma 0x2 page, 4x3 cache size */
         cache_size = 0x02440243;
         cache_config = 1 << CODA9_CACHE_PAGEMERGE_OFFSET;
     }
     coda_write(ctx->dev, cache_size, CODA9_CMD_SET_FRAME_CACHE_SIZE);
     if (fourcc == V4L2_PIX_FMT_NV12 || fourcc == V4L2_PIX_FMT_YUYV) {
         cache_config |= 32 << CODA9_CACHE_LUMA_BUFFER_SIZE_OFFSET |
                 16 << CODA9_CACHE_CR_BUFFER_SIZE_OFFSET |
                 0 << CODA9_CACHE_CB_BUFFER_SIZE_OFFSET;
     } else {
         cache_config |= 32 << CODA9_CACHE_LUMA_BUFFER_SIZE_OFFSET |
                 8 << CODA9_CACHE_CR_BUFFER_SIZE_OFFSET |
                 8 << CODA9_CACHE_CB_BUFFER_SIZE_OFFSET;
     }
     coda_write(ctx->dev, cache_config, CODA9_CMD_SET_FRAME_CACHE_CONFIG);
 }
 
 /*
  * Encoder context operations
  */
 
 static int coda_encoder_reqbufs(struct coda_ctx *ctx,
                 struct v4l2_requestbuffers *rb)
 {
     struct coda_q_data *q_data_src;
     int ret;
 
     if (rb->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
         return 0;
 
     if (rb->count) {
         q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
         ret = coda_alloc_context_buffers(ctx, q_data_src);
         if (ret < 0)
             return ret;
     } else {
         coda_free_context_buffers(ctx);
     }
 
     return 0;
 }
 
 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_v4l2_buffer *buf;
     int gamma, ret, value;
     u32 dst_fourcc;
     int num_fb;
     u32 stride;
 
     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;
 
     buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
     bitstream_buf = vb2_dma_contig_plane_dma_addr(&buf->vb2_buf, 0);
     bitstream_size = q_data_dst->sizeimage;
 
     if (!coda_is_initialized(dev)) {
         v4l2_err(v4l2_dev, "coda is not initialized.\n");
         return -EFAULT;
     }
 
     if (dst_fourcc == V4L2_PIX_FMT_JPEG) {
         if (!ctx->params.jpeg_qmat_tab[0])
             ctx->params.jpeg_qmat_tab[0] = kmalloc(64, GFP_KERNEL);
         if (!ctx->params.jpeg_qmat_tab[1])
             ctx->params.jpeg_qmat_tab[1] = kmalloc(64, GFP_KERNEL);
         coda_set_jpeg_compression_quality(ctx, ctx->params.jpeg_quality);
     }
 
     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_HX4:
     case CODA_7541:
         coda_write(dev, CODA7_STREAM_BUF_DYNALLOC_EN |
             CODA7_STREAM_BUF_PIC_RESET, CODA_REG_BIT_STREAM_CTRL);
         break;
     }
 
     ctx->frame_mem_ctrl &= ~(CODA_FRAME_CHROMA_INTERLEAVE | (0x3 << 9) |
                  CODA9_FRAME_TILED2LINEAR);
     if (q_data_src->fourcc == V4L2_PIX_FMT_NV12)
         ctx->frame_mem_ctrl |= CODA_FRAME_CHROMA_INTERLEAVE;
     if (ctx->tiled_map_type == GDI_TILED_FRAME_MB_RASTER_MAP)
         ctx->frame_mem_ctrl |= (0x3 << 9) | CODA9_FRAME_TILED2LINEAR;
     coda_write(dev, ctx->frame_mem_ctrl, 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 */
     value = 0;
     switch (dev->devtype->product) {
     case CODA_DX6:
         value = (q_data_src->rect.width & CODADX6_PICWIDTH_MASK)
             << CODADX6_PICWIDTH_OFFSET;
         value |= (q_data_src->rect.height & CODADX6_PICHEIGHT_MASK)
              << CODA_PICHEIGHT_OFFSET;
         break;
     case CODA_HX4:
     case CODA_7541:
         if (dst_fourcc == V4L2_PIX_FMT_H264) {
             value = (round_up(q_data_src->rect.width, 16) &
                  CODA7_PICWIDTH_MASK) << CODA7_PICWIDTH_OFFSET;
             value |= (round_up(q_data_src->rect.height, 16) &
                  CODA7_PICHEIGHT_MASK) << CODA_PICHEIGHT_OFFSET;
             break;
         }
         fallthrough;
     case CODA_960:
         value = (q_data_src->rect.width & CODA7_PICWIDTH_MASK)
             << CODA7_PICWIDTH_OFFSET;
         value |= (q_data_src->rect.height & CODA7_PICHEIGHT_MASK)
              << CODA_PICHEIGHT_OFFSET;
     }
     coda_write(dev, value, CODA_CMD_ENC_SEQ_SRC_SIZE);
     if (dst_fourcc == V4L2_PIX_FMT_JPEG)
         ctx->params.framerate = 0;
     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);
         value = ((ctx->params.h264_disable_deblocking_filter_idc &
               CODA_264PARAM_DISABLEDEBLK_MASK) <<
              CODA_264PARAM_DISABLEDEBLK_OFFSET) |
             ((ctx->params.h264_slice_alpha_c0_offset_div2 &
               CODA_264PARAM_DEBLKFILTEROFFSETALPHA_MASK) <<
              CODA_264PARAM_DEBLKFILTEROFFSETALPHA_OFFSET) |
             ((ctx->params.h264_slice_beta_offset_div2 &
               CODA_264PARAM_DEBLKFILTEROFFSETBETA_MASK) <<
              CODA_264PARAM_DEBLKFILTEROFFSETBETA_OFFSET) |
             (ctx->params.h264_constrained_intra_pred_flag <<
              CODA_264PARAM_CONSTRAINEDINTRAPREDFLAG_OFFSET) |
             (ctx->params.h264_chroma_qp_index_offset &
              CODA_264PARAM_CHROMAQPOFFSET_MASK);
         coda_write(dev, value, CODA_CMD_ENC_SEQ_264_PARA);
         break;
     case V4L2_PIX_FMT_JPEG:
         coda_write(dev, 0, CODA_CMD_ENC_SEQ_JPG_PARA);
         coda_write(dev, ctx->params.jpeg_restart_interval,
                 CODA_CMD_ENC_SEQ_JPG_RST_INTERVAL);
         coda_write(dev, 0, CODA_CMD_ENC_SEQ_JPG_THUMB_EN);
         coda_write(dev, 0, CODA_CMD_ENC_SEQ_JPG_THUMB_SIZE);
         coda_write(dev, 0, CODA_CMD_ENC_SEQ_JPG_THUMB_OFFSET);
 
         coda_jpeg_write_tables(ctx);
         break;
     default:
         v4l2_err(v4l2_dev,
              "dst format (0x%08x) invalid.\n", dst_fourcc);
         ret = -EINVAL;
         goto out;
     }
 
     /*
      * slice mode and GOP size registers are used for thumb size/offset
      * in JPEG mode
      */
     if (dst_fourcc != V4L2_PIX_FMT_JPEG) {
         value = coda_slice_mode(ctx);
         coda_write(dev, value, CODA_CMD_ENC_SEQ_SLICE_MODE);
         value = ctx->params.gop_size;
         coda_write(dev, value, CODA_CMD_ENC_SEQ_GOP_SIZE);
     }
 
     if (ctx->params.bitrate && (ctx->params.frame_rc_enable ||
                     ctx->params.mb_rc_enable)) {
         ctx->params.bitrate_changed = false;
         ctx->params.h264_intra_qp_changed = false;
 
         /* Rate control enabled */
         value = (ctx->params.bitrate & CODA_RATECONTROL_BITRATE_MASK)
             << CODA_RATECONTROL_BITRATE_OFFSET;
         value |=  1 & CODA_RATECONTROL_ENABLE_MASK;
         value |= (ctx->params.vbv_delay &
               CODA_RATECONTROL_INITIALDELAY_MASK)
              << CODA_RATECONTROL_INITIALDELAY_OFFSET;
         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, ctx->params.vbv_size, 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);
 
     if (ctx->params.frame_rc_enable && !ctx->params.mb_rc_enable)
         value = 1;
     else
         value = 0;
     coda_write(dev, value, 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_HX4:
         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;
     }
     ctx->initialized = 1;
 
     if (dst_fourcc != V4L2_PIX_FMT_JPEG) {
         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;
         }
         num_fb = 2;
         stride = q_data_src->bytesperline;
     } else {
         ctx->num_internal_frames = 0;
         num_fb = 0;
         stride = 0;
     }
     coda_write(dev, num_fb, CODA_CMD_SET_FRAME_BUF_NUM);
     coda_write(dev, stride, CODA_CMD_SET_FRAME_BUF_STRIDE);
 
     if (dev->devtype->product == CODA_HX4 ||
         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);
 
             coda9_set_frame_cache(ctx, q_data_src->fourcc);
 
             /* FIXME */
             coda_write(dev, ctx->internal_frames[2].buf.paddr,
                    CODA9_CMD_SET_FRAME_SUBSAMP_A);
             coda_write(dev, ctx->internal_frames[3].buf.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;
     }
 
     coda_dbg(1, ctx, "start encoding %dx%d %4.4s->%4.4s @ %d/%d Hz\n",
          q_data_src->rect.width, q_data_src->rect.height,
          (char *)&ctx->codec->src_fourcc, (char *)&dst_fourcc,
          ctx->params.framerate & 0xffff,
          (ctx->params.framerate >> 16) + 1);
 
     /* 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;
 
         /*
          * If visible width or height are not aligned to macroblock
          * size, the crop_right and crop_bottom SPS fields must be set
          * to the difference between visible and coded size.  This is
          * only supported by CODA960 firmware. All others do not allow
          * writing frame cropping parameters, so we have to manually
          * fix up the SPS RBSP (Sequence Parameter Set Raw Byte
          * Sequence Payload) ourselves.
          */
         if (ctx->dev->devtype->product != CODA_960 &&
             ((q_data_src->rect.width % 16) ||
              (q_data_src->rect.height % 16))) {
             ret = coda_h264_sps_fixup(ctx, q_data_src->rect.width,
                           q_data_src->rect.height,
                           &ctx->vpu_header[0][0],
                           &ctx->vpu_header_size[0],
                           sizeof(ctx->vpu_header[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_v4l2_buffer *src_buf, *dst_buf;
     struct coda_dev *dev = ctx->dev;
     int force_ipicture;
     int quant_param = 0;
     u32 pic_stream_buffer_addr, pic_stream_buffer_size;
     u32 rot_mode = 0;
     u32 dst_fourcc;
     u32 reg;
     int ret;
 
     ret = coda_enc_param_change(ctx);
     if (ret < 0) {
         v4l2_warn(&ctx->dev->v4l2_dev, "parameter change failed: %d\n",
               ret);
     }
 
     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->sequence = ctx->osequence;
     dst_buf->sequence = ctx->osequence;
     ctx->osequence++;
 
     force_ipicture = ctx->params.force_ipicture;
     if (force_ipicture)
         ctx->params.force_ipicture = false;
     else if (ctx->params.gop_size != 0 &&
          (src_buf->sequence % ctx->params.gop_size) == 0)
         force_ipicture = 1;
 
     /*
      * 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 (!force_ipicture) {
         src_buf->flags |= V4L2_BUF_FLAG_PFRAME;
         src_buf->flags &= ~V4L2_BUF_FLAG_KEYFRAME;
     } else {
         src_buf->flags |= V4L2_BUF_FLAG_KEYFRAME;
         src_buf->flags &= ~V4L2_BUF_FLAG_PFRAME;
     }
 
     if (dev->devtype->product == CODA_960)
         coda_set_gdi_regs(ctx);
 
     /*
      * Copy headers in front of the first frame and forced I frames for
      * H.264 only. In MPEG4 they are already copied by the CODA.
      */
     if (src_buf->sequence == 0 || force_ipicture) {
         pic_stream_buffer_addr =
             vb2_dma_contig_plane_dma_addr(&dst_buf->vb2_buf, 0) +
             ctx->vpu_header_size[0] +
             ctx->vpu_header_size[1] +
             ctx->vpu_header_size[2];
         pic_stream_buffer_size = q_data_dst->sizeimage -
             ctx->vpu_header_size[0] -
             ctx->vpu_header_size[1] -
             ctx->vpu_header_size[2];
         memcpy(vb2_plane_vaddr(&dst_buf->vb2_buf, 0),
                &ctx->vpu_header[0][0], ctx->vpu_header_size[0]);
         memcpy(vb2_plane_vaddr(&dst_buf->vb2_buf, 0)
             + ctx->vpu_header_size[0], &ctx->vpu_header[1][0],
             ctx->vpu_header_size[1]);
         memcpy(vb2_plane_vaddr(&dst_buf->vb2_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->vb2_buf, 0);
         pic_stream_buffer_size = q_data_dst->sizeimage;
     }
 
     if (force_ipicture) {
         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;
         case V4L2_PIX_FMT_JPEG:
             quant_param = 30;
             break;
         default:
             v4l2_warn(&ctx->dev->v4l2_dev,
                 "cannot set intra qp, fmt not supported\n");
             break;
         }
     } else {
         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 */
     if (ctx->params.rot_mode)
         rot_mode = CODA_ROT_MIR_ENABLE | ctx->params.rot_mode;
     coda_write(dev, rot_mode, CODA_CMD_ENC_PIC_ROT_MODE);
     coda_write(dev, quant_param, CODA_CMD_ENC_PIC_QS);
 
     if (dev->devtype->product == CODA_960) {
         coda_write(dev, 4/*FIXME: 0*/, CODA9_CMD_ENC_PIC_SRC_INDEX);
         coda_write(dev, q_data_src->bytesperline,
                CODA9_CMD_ENC_PIC_SRC_STRIDE);
         coda_write(dev, 0, CODA9_CMD_ENC_PIC_SUB_FRAME_SYNC);
 
         reg = CODA9_CMD_ENC_PIC_SRC_ADDR_Y;
     } else {
         reg = CODA_CMD_ENC_PIC_SRC_ADDR_Y;
     }
     coda_write_base(ctx, q_data_src, src_buf, reg);
 
     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 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);
 
     trace_coda_enc_pic_run(ctx, src_buf);
 
     coda_command_async(ctx, CODA_COMMAND_PIC_RUN);
 
     return 0;
 }
 
 static char coda_frame_type_char(u32 flags)
 {
     return (flags & V4L2_BUF_FLAG_KEYFRAME) ? 'I' :
            (flags & V4L2_BUF_FLAG_PFRAME) ? 'P' :
            (flags & V4L2_BUF_FLAG_BFRAME) ? 'B' : '?';
 }
 
 static void coda_finish_encode(struct coda_ctx *ctx)
 {
     struct vb2_v4l2_buffer *src_buf, *dst_buf;
     struct coda_dev *dev = ctx->dev;
     u32 wr_ptr, start_ptr;
 
     if (ctx->aborting)
         return;
 
     /*
      * Lock to make sure that an encoder stop command running in parallel
      * will either already have marked src_buf as last, or it will wake up
      * the capture queue after the buffers are returned.
      */
     mutex_lock(&ctx->wakeup_mutex);
     src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
     dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
 
     trace_coda_enc_pic_done(ctx, dst_buf);
 
     /* 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->sequence == 0 ||
         src_buf->flags & V4L2_BUF_FLAG_KEYFRAME) {
         vb2_set_plane_payload(&dst_buf->vb2_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->vb2_buf, 0, wr_ptr - start_ptr);
     }
 
     coda_dbg(1, ctx, "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);
 
     dst_buf->flags &= ~(V4L2_BUF_FLAG_KEYFRAME |
                 V4L2_BUF_FLAG_PFRAME |
                 V4L2_BUF_FLAG_LAST);
     if (coda_read(dev, CODA_RET_ENC_PIC_TYPE) == 0)
         dst_buf->flags |= V4L2_BUF_FLAG_KEYFRAME;
     else
         dst_buf->flags |= V4L2_BUF_FLAG_PFRAME;
     dst_buf->flags |= src_buf->flags & V4L2_BUF_FLAG_LAST;
 
     v4l2_m2m_buf_copy_metadata(src_buf, dst_buf, false);
 
     v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
 
     dst_buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
     coda_m2m_buf_done(ctx, dst_buf, VB2_BUF_STATE_DONE);
     mutex_unlock(&ctx->wakeup_mutex);
 
     ctx->gopcounter--;
     if (ctx->gopcounter < 0)
         ctx->gopcounter = ctx->params.gop_size - 1;
 
     coda_dbg(1, ctx, "job finished: encoded %c frame (%d)%s\n",
          coda_frame_type_char(dst_buf->flags), dst_buf->sequence,
          (dst_buf->flags & V4L2_BUF_FLAG_LAST) ? " (last)" : "");
 }
 
 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);
 
     if (ctx->initialized == 0)
         goto out;
 
     coda_dbg(1, ctx, "%s: sent command 'SEQ_END' to coda\n", __func__);
     if (coda_command_sync(ctx, CODA_COMMAND_SEQ_END)) {
         v4l2_err(&dev->v4l2_dev,
              "CODA_COMMAND_SEQ_END failed\n");
     }
 
     /*
      * FIXME: Sometimes h.264 encoding fails with 8-byte sequences missing
      * from the output stream after the h.264 decoder has run. Resetting the
      * hardware after the decoder has finished seems to help.
      */
     if (dev->devtype->product == CODA_960)
         coda_hw_reset(ctx);
 
     kfifo_init(&ctx->bitstream_fifo,
         ctx->bitstream.vaddr, ctx->bitstream.size);
 
     coda_free_framebuffers(ctx);
 
     ctx->initialized = 0;
 
 out:
     mutex_unlock(&dev->coda_mutex);
     mutex_unlock(&ctx->buffer_mutex);
 }
 
 static void coda_bit_release(struct coda_ctx *ctx)
 {
     mutex_lock(&ctx->buffer_mutex);
     coda_free_framebuffers(ctx);
     coda_free_context_buffers(ctx);
     coda_free_bitstream_buffer(ctx);
     mutex_unlock(&ctx->buffer_mutex);
 }
 
 const struct coda_context_ops coda_bit_encode_ops = {
     .queue_init = coda_encoder_queue_init,
     .reqbufs = coda_encoder_reqbufs,
     .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_alloc_bitstream_buffer(struct coda_ctx *ctx,
                        struct coda_q_data *q_data)
 {
     if (ctx->bitstream.vaddr)
         return 0;
 
     ctx->bitstream.size = roundup_pow_of_two(q_data->sizeimage * 2);
     ctx->bitstream.vaddr = dma_alloc_wc(ctx->dev->dev, ctx->bitstream.size,
                         &ctx->bitstream.paddr, GFP_KERNEL);
     if (!ctx->bitstream.vaddr) {
         v4l2_err(&ctx->dev->v4l2_dev,
              "failed to allocate bitstream ringbuffer");
         return -ENOMEM;
     }
     kfifo_init(&ctx->bitstream_fifo,
            ctx->bitstream.vaddr, ctx->bitstream.size);
 
     return 0;
 }
 
 static void coda_free_bitstream_buffer(struct coda_ctx *ctx)
 {
     if (ctx->bitstream.vaddr == NULL)
         return;
 
     dma_free_wc(ctx->dev->dev, ctx->bitstream.size, ctx->bitstream.vaddr,
             ctx->bitstream.paddr);
     ctx->bitstream.vaddr = NULL;
     kfifo_init(&ctx->bitstream_fifo, NULL, 0);
 }
 
 static int coda_decoder_reqbufs(struct coda_ctx *ctx,
                 struct v4l2_requestbuffers *rb)
 {
     struct coda_q_data *q_data_src;
     int ret;
 
     if (rb->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
         return 0;
 
     if (rb->count) {
         q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
         ret = coda_alloc_context_buffers(ctx, q_data_src);
         if (ret < 0)
             return ret;
         ret = coda_alloc_bitstream_buffer(ctx, q_data_src);
         if (ret < 0) {
             coda_free_context_buffers(ctx);
             return ret;
         }
     } else {
         coda_free_bitstream_buffer(ctx);
         coda_free_context_buffers(ctx);
     }
 
     return 0;
 }
 
 static bool coda_reorder_enable(struct coda_ctx *ctx)
 {
     struct coda_dev *dev = ctx->dev;
     int profile;
 
     if (dev->devtype->product != CODA_HX4 &&
         dev->devtype->product != CODA_7541 &&
         dev->devtype->product != CODA_960)
         return false;
 
     if (ctx->codec->src_fourcc == V4L2_PIX_FMT_JPEG)
         return false;
 
     if (ctx->codec->src_fourcc != V4L2_PIX_FMT_H264)
         return true;
 
     profile = coda_h264_profile(ctx->params.h264_profile_idc);
     if (profile < 0)
         v4l2_warn(&dev->v4l2_dev, "Unknown H264 Profile: %u\n",
               ctx->params.h264_profile_idc);
 
     /* Baseline profile does not support reordering */
     return profile > V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE;
 }
 
 static void coda_decoder_drop_used_metas(struct coda_ctx *ctx)
 {
     struct coda_buffer_meta *meta, *tmp;
 
     /*
      * All metas that end at or before the RD pointer (fifo out),
      * are now consumed by the VPU and should be released.
      */
     spin_lock(&ctx->buffer_meta_lock);
     list_for_each_entry_safe(meta, tmp, &ctx->buffer_meta_list, list) {
         if (ctx->bitstream_fifo.kfifo.out >= meta->end) {
             coda_dbg(2, ctx, "releasing meta: seq=%d start=%d end=%d\n",
                  meta->sequence, meta->start, meta->end);
 
             list_del(&meta->list);
             ctx->num_metas--;
             ctx->first_frame_sequence++;
             kfree(meta);
         }
     }
     spin_unlock(&ctx->buffer_meta_lock);
 }
 
 static int __coda_decoder_seq_init(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, dst_fourcc;
     u32 val;
     int ret;
 
     lockdep_assert_held(&dev->coda_mutex);
 
     coda_dbg(1, ctx, "Video Data Order Adapter: %s\n",
          ctx->use_vdoa ? "Enabled" : "Disabled");
 
     /* 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;
     dst_fourcc = q_data_dst->fourcc;
 
     /* Update coda bitstream read and write pointers from kfifo */
     coda_kfifo_sync_to_device_full(ctx);
 
     ctx->frame_mem_ctrl &= ~(CODA_FRAME_CHROMA_INTERLEAVE | (0x3 << 9) |
                  CODA9_FRAME_TILED2LINEAR);
     if (dst_fourcc == V4L2_PIX_FMT_NV12 || dst_fourcc == V4L2_PIX_FMT_YUYV)
         ctx->frame_mem_ctrl |= CODA_FRAME_CHROMA_INTERLEAVE;
     if (ctx->tiled_map_type == GDI_TILED_FRAME_MB_RASTER_MAP)
         ctx->frame_mem_ctrl |= (0x3 << 9) |
             ((ctx->use_vdoa) ? 0 : CODA9_FRAME_TILED2LINEAR);
     coda_write(dev, ctx->frame_mem_ctrl, CODA_REG_BIT_FRAME_MEM_CTRL);
 
     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, bitstream_buf, CODA_CMD_DEC_SEQ_BB_START);
     coda_write(dev, bitstream_size / 1024, CODA_CMD_DEC_SEQ_BB_SIZE);
     val = 0;
     if (coda_reorder_enable(ctx))
         val |= CODA_REORDER_ENABLE;
     if (ctx->codec->src_fourcc == V4L2_PIX_FMT_JPEG)
         val |= CODA_NO_INT_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_MPEG4) {
         coda_write(dev, CODA_MP4_CLASS_MPEG4,
                CODA_CMD_DEC_SEQ_MP4_ASP_CLASS);
     }
     if (src_fourcc == V4L2_PIX_FMT_H264) {
         if (dev->devtype->product == CODA_HX4 ||
             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 (src_fourcc == V4L2_PIX_FMT_JPEG)
         coda_write(dev, 0, CODA_CMD_DEC_SEQ_JPG_THUMB_EN);
     if (dev->devtype->product != CODA_960)
         coda_write(dev, 0, CODA_CMD_DEC_SEQ_SRC_SIZE);
 
     ctx->bit_stream_param = CODA_BIT_DEC_SEQ_INIT_ESCAPE;
     ret = coda_command_sync(ctx, CODA_COMMAND_SEQ_INIT);
     ctx->bit_stream_param = 0;
     if (ret) {
         v4l2_err(&dev->v4l2_dev, "CODA_COMMAND_SEQ_INIT timeout\n");
         return ret;
     }
     ctx->sequence_offset = ~0U;
     ctx->initialized = 1;
     ctx->first_frame_sequence = 0;
 
     /* Update kfifo out pointer from coda bitstream read pointer */
     coda_kfifo_sync_from_device(ctx);
 
     /*
      * After updating the read pointer, we need to check if
      * any metas are consumed and should be released.
      */
     coda_decoder_drop_used_metas(ctx);
 
     if (coda_read(dev, CODA_RET_DEC_SEQ_SUCCESS) == 0) {
         v4l2_err(&dev->v4l2_dev,
             "CODA_COMMAND_SEQ_INIT failed, error code = 0x%x\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->bytesperline || height > q_data_dst->height) {
         v4l2_err(&dev->v4l2_dev, "stream is %dx%d, not %dx%d\n",
              width, height, q_data_dst->bytesperline,
              q_data_dst->height);
         return -EINVAL;
     }
 
     width = round_up(width, 16);
     height = round_up(height, 16);
 
     coda_dbg(1, ctx, "start decoding: %dx%d\n", width, height);
 
     ctx->num_internal_frames = coda_read(dev, CODA_RET_DEC_SEQ_FRAME_NEED);
     /*
      * If the VDOA is used, the decoder needs one additional frame,
      * because the frames are freed when the next frame is decoded.
      * Otherwise there are visible errors in the decoded frames (green
      * regions in displayed frames) and a broken order of frames (earlier
      * frames are sporadically displayed after later frames).
      */
     if (ctx->use_vdoa)
         ctx->num_internal_frames += 1;
     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);
     }
 
     if (dev->devtype->product != CODA_DX6) {
         u8 profile, level;
 
         val = coda_read(dev, CODA7_RET_DEC_SEQ_HEADER_REPORT);
         profile = val & 0xff;
         level = (val >> 8) & 0x7f;
 
         if (profile || level)
             coda_update_profile_level_ctrls(ctx, profile, level);
     }
 
     return 0;
 }
 
 static void coda_dec_seq_init_work(struct work_struct *work)
 {
     struct coda_ctx *ctx = container_of(work,
                         struct coda_ctx, seq_init_work);
     struct coda_dev *dev = ctx->dev;
 
     mutex_lock(&ctx->buffer_mutex);
     mutex_lock(&dev->coda_mutex);
 
     if (!ctx->initialized)
         __coda_decoder_seq_init(ctx);
 
     mutex_unlock(&dev->coda_mutex);
     mutex_unlock(&ctx->buffer_mutex);
 }
 
 static int __coda_start_decoding(struct coda_ctx *ctx)
 {
     struct coda_q_data *q_data_src, *q_data_dst;
     struct coda_dev *dev = ctx->dev;
     u32 src_fourcc, dst_fourcc;
     int ret;
 
     q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
     q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
     src_fourcc = q_data_src->fourcc;
     dst_fourcc = q_data_dst->fourcc;
 
     if (!ctx->initialized) {
         ret = __coda_decoder_seq_init(ctx);
         if (ret < 0)
             return ret;
     } else {
         ctx->frame_mem_ctrl &= ~(CODA_FRAME_CHROMA_INTERLEAVE | (0x3 << 9) |
                      CODA9_FRAME_TILED2LINEAR);
         if (dst_fourcc == V4L2_PIX_FMT_NV12 || dst_fourcc == V4L2_PIX_FMT_YUYV)
             ctx->frame_mem_ctrl |= CODA_FRAME_CHROMA_INTERLEAVE;
         if (ctx->tiled_map_type == GDI_TILED_FRAME_MB_RASTER_MAP)
             ctx->frame_mem_ctrl |= (0x3 << 9) |
                 ((ctx->use_vdoa) ? 0 : CODA9_FRAME_TILED2LINEAR);
     }
 
     coda_write(dev, ctx->parabuf.paddr, CODA_REG_BIT_PARA_BUF_ADDR);
 
     ret = coda_alloc_framebuffers(ctx, q_data_dst, src_fourcc);
     if (ret < 0) {
         v4l2_err(&dev->v4l2_dev, "failed to allocate framebuffers\n");
         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, round_up(q_data_dst->rect.width, 16),
            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);
 
             coda_write(dev, -1, CODA9_CMD_SET_FRAME_DELAY);
             coda9_set_frame_cache(ctx, dst_fourcc);
         }
     }
 
     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_HX4 ||
         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_v4l2_buffer *dst_buf;
     struct coda_dev *dev = ctx->dev;
     struct coda_q_data *q_data_dst;
     struct coda_buffer_meta *meta;
     u32 rot_mode = 0;
     u32 reg_addr, reg_stride;
 
     dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
     q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
 
     /* Try to copy source buffer contents into the bitstream ringbuffer */
     mutex_lock(&ctx->bitstream_mutex);
     coda_fill_bitstream(ctx, NULL);
     mutex_unlock(&ctx->bitstream_mutex);
 
     if (coda_get_bitstream_payload(ctx) < 512 &&
         (!(ctx->bit_stream_param & CODA_BIT_STREAM_END_FLAG))) {
         coda_dbg(1, ctx, "bitstream payload: %d, skipping\n",
              coda_get_bitstream_payload(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");
             return -EAGAIN;
         } else {
             ctx->initialized = 1;
         }
     }
 
     if (dev->devtype->product == CODA_960)
         coda_set_gdi_regs(ctx);
 
     if (ctx->use_vdoa &&
         ctx->display_idx >= 0 &&
         ctx->display_idx < ctx->num_internal_frames) {
         vdoa_device_run(ctx->vdoa,
                 vb2_dma_contig_plane_dma_addr(&dst_buf->vb2_buf, 0),
                 ctx->internal_frames[ctx->display_idx].buf.paddr);
     } else {
         if (dev->devtype->product == CODA_960) {
             /*
              * It was previously assumed that the CODA960 has an
              * internal list of 64 buffer entries that contains
              * both the registered internal frame buffers as well
              * as the rotator buffer output, and that the ROT_INDEX
              * register must be set to a value between the last
              * internal frame buffers' index and 64.
              * At least on firmware version 3.1.1 it turns out that
              * setting ROT_INDEX to any value >= 32 causes CODA
              * hangups that it can not recover from with the SRC VPU
              * reset.
              * It does appear to work however, to just set it to a
              * fixed value in the [ctx->num_internal_frames, 31]
              * range, for example CODA_MAX_FRAMEBUFFERS.
              */
             coda_write(dev, CODA_MAX_FRAMEBUFFERS,
                    CODA9_CMD_DEC_PIC_ROT_INDEX);
 
             reg_addr = CODA9_CMD_DEC_PIC_ROT_ADDR_Y;
             reg_stride = CODA9_CMD_DEC_PIC_ROT_STRIDE;
         } else {
             reg_addr = CODA_CMD_DEC_PIC_ROT_ADDR_Y;
             reg_stride = CODA_CMD_DEC_PIC_ROT_STRIDE;
         }
         coda_write_base(ctx, q_data_dst, dst_buf, reg_addr);
         coda_write(dev, q_data_dst->bytesperline, reg_stride);
 
         rot_mode = CODA_ROT_MIR_ENABLE | ctx->params.rot_mode;
     }
 
     coda_write(dev, rot_mode, CODA_CMD_DEC_PIC_ROT_MODE);
 
     switch (dev->devtype->product) {
     case CODA_DX6:
         /* TBD */
     case CODA_HX4:
     case CODA_7541:
         coda_write(dev, CODA_PRE_SCAN_EN, CODA_CMD_DEC_PIC_OPTION);
         break;
     case CODA_960:
         /* 'hardcode to use interrupt disable mode'? */
         coda_write(dev, (1 << 10), CODA_CMD_DEC_PIC_OPTION);
         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);
 
     spin_lock(&ctx->buffer_meta_lock);
     meta = list_first_entry_or_null(&ctx->buffer_meta_list,
                     struct coda_buffer_meta, list);
 
     if (meta && ctx->codec->src_fourcc == V4L2_PIX_FMT_JPEG) {
 
         /* If this is the last buffer in the bitstream, add padding */
         if (meta->end == ctx->bitstream_fifo.kfifo.in) {
             static unsigned char buf[512];
             unsigned int pad;
 
             /* Pad to multiple of 256 and then add 256 more */
             pad = ((0 - meta->end) & 0xff) + 256;
 
             memset(buf, 0xff, sizeof(buf));
 
             kfifo_in(&ctx->bitstream_fifo, buf, pad);
         }
     }
     spin_unlock(&ctx->buffer_meta_lock);
 
     coda_kfifo_sync_to_device_full(ctx);
 
     /* Clear decode success flag */
     coda_write(dev, 0, CODA_RET_DEC_PIC_SUCCESS);
 
     /* Clear error return value */
     coda_write(dev, 0, CODA_RET_DEC_PIC_ERR_MB);
 
     trace_coda_dec_pic_run(ctx, meta);
 
     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_v4l2_buffer *dst_buf;
     struct coda_buffer_meta *meta;
     int width, height;
     int decoded_idx;
     int display_idx;
     struct coda_internal_frame *decoded_frame = NULL;
     u32 src_fourcc;
     int success;
     u32 err_mb;
     int err_vdoa = 0;
     u32 val;
 
     if (ctx->aborting)
         return;
 
     /* 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) >= ctx->bitstream.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) {
         if (__ratelimit(&dev->mb_err_rs))
             coda_dbg(1, ctx, "errors in %d macroblocks\n", err_mb);
         v4l2_ctrl_s_ctrl(ctx->mb_err_cnt_ctrl,
                  v4l2_ctrl_g_ctrl(ctx->mb_err_cnt_ctrl) + err_mb);
     }
 
     if (dev->devtype->product == CODA_HX4 ||
         dev->devtype->product == CODA_7541) {
         val = coda_read(dev, CODA_RET_DEC_PIC_OPTION);
         if (val == 0) {
             /* not enough bitstream data */
             coda_dbg(1, ctx, "prescan failed: %d\n", val);
             ctx->hold = true;
             return;
         }
     }
 
     /* Wait until the VDOA finished writing the previous display frame */
     if (ctx->use_vdoa &&
         ctx->display_idx >= 0 &&
         ctx->display_idx < ctx->num_internal_frames) {
         err_vdoa = vdoa_wait_for_completion(ctx->vdoa);
     }
 
     ctx->frm_dis_flg = coda_read(dev,
                      CODA_REG_BIT_FRM_DIS_FLG(ctx->reg_idx));
 
     /* The previous display frame was copied out and can be overwritten */
     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) {
         if (ctx->display_idx >= 0 &&
             ctx->display_idx < ctx->num_internal_frames)
             ctx->sequence_offset++;
         /* no frame was decoded, we still return 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 {
         int sequence;
 
         decoded_frame = &ctx->internal_frames[decoded_idx];
 
         val = coda_read(dev, CODA_RET_DEC_PIC_FRAME_NUM);
         if (ctx->sequence_offset == -1)
             ctx->sequence_offset = val;
 
         sequence = val + ctx->first_frame_sequence
                    - ctx->sequence_offset;
         spin_lock(&ctx->buffer_meta_lock);
         if (!list_empty(&ctx->buffer_meta_list)) {
             meta = list_first_entry(&ctx->buffer_meta_list,
                           struct coda_buffer_meta, list);
             list_del(&meta->list);
             ctx->num_metas--;
             spin_unlock(&ctx->buffer_meta_lock);
             /*
              * Clamp counters to 16 bits for comparison, as the HW
              * counter rolls over at this point for h.264. This
              * may be different for other formats, but using 16 bits
              * should be enough to detect most errors and saves us
              * from doing different things based on the format.
              */
             if ((sequence & 0xffff) != (meta->sequence & 0xffff)) {
                 v4l2_err(&dev->v4l2_dev,
                      "sequence number mismatch (%d(%d) != %d)\n",
                      sequence, ctx->sequence_offset,
                      meta->sequence);
             }
             decoded_frame->meta = *meta;
             kfree(meta);
         } else {
             spin_unlock(&ctx->buffer_meta_lock);
             v4l2_err(&dev->v4l2_dev, "empty timestamp list!\n");
             memset(&decoded_frame->meta, 0,
                    sizeof(struct coda_buffer_meta));
             decoded_frame->meta.sequence = sequence;
             decoded_frame->meta.last = false;
             ctx->sequence_offset++;
         }
 
         trace_coda_dec_pic_done(ctx, &decoded_frame->meta);
 
         val = coda_read(dev, CODA_RET_DEC_PIC_TYPE) & 0x7;
         decoded_frame->type = (val == 0) ? V4L2_BUF_FLAG_KEYFRAME :
                       (val == 1) ? V4L2_BUF_FLAG_PFRAME :
                            V4L2_BUF_FLAG_BFRAME;
 
         decoded_frame->error = 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) {
         struct coda_internal_frame *ready_frame;
 
         ready_frame = &ctx->internal_frames[ctx->display_idx];
 
         dst_buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
         dst_buf->sequence = ctx->osequence++;
 
         dst_buf->field = V4L2_FIELD_NONE;
         dst_buf->flags &= ~(V4L2_BUF_FLAG_KEYFRAME |
                          V4L2_BUF_FLAG_PFRAME |
                          V4L2_BUF_FLAG_BFRAME);
         dst_buf->flags |= ready_frame->type;
         meta = &ready_frame->meta;
         if (meta->last && !coda_reorder_enable(ctx)) {
             /*
              * If this was the last decoded frame, and reordering
              * is disabled, this will be the last display frame.
              */
             coda_dbg(1, ctx, "last meta, marking as last frame\n");
             dst_buf->flags |= V4L2_BUF_FLAG_LAST;
         } else if (ctx->bit_stream_param & CODA_BIT_STREAM_END_FLAG &&
                display_idx == -1) {
             /*
              * If there is no designated presentation frame anymore,
              * this frame has to be the last one.
              */
             coda_dbg(1, ctx,
                  "no more frames to return, marking as last frame\n");
             dst_buf->flags |= V4L2_BUF_FLAG_LAST;
         }
         dst_buf->timecode = meta->timecode;
         dst_buf->vb2_buf.timestamp = meta->timestamp;
 
         trace_coda_dec_rot_done(ctx, dst_buf, meta);
 
         vb2_set_plane_payload(&dst_buf->vb2_buf, 0,
                       q_data_dst->sizeimage);
 
         if (ready_frame->error || err_vdoa)
             coda_m2m_buf_done(ctx, dst_buf, VB2_BUF_STATE_ERROR);
         else
             coda_m2m_buf_done(ctx, dst_buf, VB2_BUF_STATE_DONE);
 
         if (decoded_frame) {
             coda_dbg(1, ctx, "job finished: decoded %c frame %u, returned %c frame %u (%u/%u)%s\n",
                  coda_frame_type_char(decoded_frame->type),
                  decoded_frame->meta.sequence,
                  coda_frame_type_char(dst_buf->flags),
                  ready_frame->meta.sequence,
                  dst_buf->sequence, ctx->qsequence,
                  (dst_buf->flags & V4L2_BUF_FLAG_LAST) ?
                  " (last)" : "");
         } else {
             coda_dbg(1, ctx, "job finished: no frame decoded (%d), returned %c frame %u (%u/%u)%s\n",
                  decoded_idx,
                  coda_frame_type_char(dst_buf->flags),
                  ready_frame->meta.sequence,
                  dst_buf->sequence, ctx->qsequence,
                  (dst_buf->flags & V4L2_BUF_FLAG_LAST) ?
                  " (last)" : "");
         }
     } else {
         if (decoded_frame) {
             coda_dbg(1, ctx, "job finished: decoded %c frame %u, no frame returned (%d)\n",
                  coda_frame_type_char(decoded_frame->type),
                  decoded_frame->meta.sequence,
                  ctx->display_idx);
         } else {
             coda_dbg(1, ctx, "job finished: no frame decoded (%d) or returned (%d)\n",
                  decoded_idx, ctx->display_idx);
         }
     }
 
     /* The rotator will copy the current display frame next time */
     ctx->display_idx = display_idx;
 
     /*
      * The current decode run might have brought the bitstream fill level
      * below the size where we can start the next decode run. As userspace
      * might have filled the output queue completely and might thus be
      * blocked, we can't rely on the next qbuf to trigger the bitstream
      * refill. Check if we have data to refill the bitstream now.
      */
     mutex_lock(&ctx->bitstream_mutex);
     coda_fill_bitstream(ctx, NULL);
     mutex_unlock(&ctx->bitstream_mutex);
 }
 
 static void coda_decode_timeout(struct coda_ctx *ctx)
 {
     struct vb2_v4l2_buffer *dst_buf;
 
     /*
      * For now this only handles the case where we would deadlock with
      * userspace, i.e. userspace issued DEC_CMD_STOP and waits for EOS,
      * but after a failed decode run we would hold the context and wait for
      * userspace to queue more buffers.
      */
     if (!(ctx->bit_stream_param & CODA_BIT_STREAM_END_FLAG))
         return;
 
     dst_buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
     dst_buf->sequence = ctx->qsequence - 1;
 
     coda_m2m_buf_done(ctx, dst_buf, VB2_BUF_STATE_ERROR);
 }
 
 const struct coda_context_ops coda_bit_decode_ops = {
     .queue_init = coda_decoder_queue_init,
     .reqbufs = coda_decoder_reqbufs,
     .start_streaming = coda_start_decoding,
     .prepare_run = coda_prepare_decode,
     .finish_run = coda_finish_decode,
     .run_timeout = coda_decode_timeout,
     .seq_init_work = coda_dec_seq_init_work,
     .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, 0, CODA_REG_BIT_INT_REASON);
     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");
         return IRQ_HANDLED;
     }
 
     trace_coda_bit_done(ctx);
 
     if (ctx->aborting) {
         coda_dbg(1, ctx, "task has been aborted\n");
     }
 
     if (coda_isbusy(ctx->dev)) {
         coda_dbg(1, ctx, "coda is still busy!!!!\n");
         return IRQ_NONE;
     }
 
     complete(&ctx->completion);
 
     return IRQ_HANDLED;
 }