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media: coda: make coda_bitstream_queue more versatile 

Pass vaddr and size to coda_bitstream_queue instead of a struct
vb2_v4l2_buffer to make it reusable for queueing data that is
not exactly a whole v4l2 buffer into the bitstream ringbuffer.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Philipp Zabel 2019-06-18 12:45:18 -04:00 committed by Mauro Carvalho Chehab
parent 94af4c45a7
commit ccb901196e
1 changed files with 9 additions and 14 deletions
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23
drivers/media/platform/coda/coda-bit.c
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@ -199,33 +199,25 @@ static int coda_bitstream_pad(struct coda_ctx *ctx, u32 size)
return (n < size) ? -ENOSPC : 0;
}
static int coda_bitstream_queue(struct coda_ctx *ctx,
struct vb2_v4l2_buffer *src_buf)
static int coda_bitstream_queue(struct coda_ctx *ctx, const u8 *buf, u32 size)
{
u32 src_size = vb2_get_plane_payload(&src_buf->vb2_buf, 0);
u32 n;
u32 n = kfifo_in(&ctx->bitstream_fifo, buf, size);
n = kfifo_in(&ctx->bitstream_fifo,
vb2_plane_vaddr(&src_buf->vb2_buf, 0), src_size);
if (n < src_size)
return -ENOSPC;
src_buf->sequence = ctx->qsequence++;
return 0;
return (n < size) ? -ENOSPC : 0;
}
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;
if (coda_get_bitstream_payload(ctx) + payload + 512 >=
ctx->bitstream.size)
return false;
if (vb2_plane_vaddr(&src_buf->vb2_buf, 0) == NULL) {
if (!vaddr) {
v4l2_err(&ctx->dev->v4l2_dev, "trying to queue empty buffer\n");
return true;
}
@ -235,11 +227,14 @@ static bool coda_bitstream_try_queue(struct coda_ctx *ctx,
ctx->codec->src_fourcc == V4L2_PIX_FMT_H264)
coda_bitstream_pad(ctx, 512 - payload);
ret = coda_bitstream_queue(ctx, src_buf);
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);