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authorPhilipp Zabel <p.zabel@pengutronix.de>2015-03-24 18:30:51 +0100
committerKamil Debski <k.debski@samsung.com>2015-04-08 11:54:08 +0200
commit3002f51b5d6478bfdcc14daa5a8a72284aa88ebe (patch)
tree6ea786ea0b4f14128dd55006b13d878c1a8a59be
parent226b6cb88ab560ece06412553672f46478a9a40a (diff)
coda: allocate per-context buffers from REQBUFS
Allocate the per-context buffers from REQBUFS instead in start_encoding or start_decoding. This allows to stop and start streaming independently of buffer (re)allocation Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Kamil Debski <k.debski@samsung.com>
-rw-r--r--drivers/media/platform/coda/coda-bit.c55
-rw-r--r--drivers/media/platform/coda/coda-common.c22
-rw-r--r--drivers/media/platform/coda/coda.h1
3 files changed, 66 insertions, 12 deletions
diff --git a/drivers/media/platform/coda/coda-bit.c b/drivers/media/platform/coda/coda-bit.c
index 856b542b35b9..12b93867e665 100644
--- a/drivers/media/platform/coda/coda-bit.c
+++ b/drivers/media/platform/coda/coda-bit.c
@@ -709,6 +709,27 @@ err_clk_per:
* 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;
@@ -725,11 +746,6 @@ static int coda_start_encoding(struct coda_ctx *ctx)
q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
dst_fourcc = q_data_dst->fourcc;
- /* Allocate per-instance buffers */
- ret = coda_alloc_context_buffers(ctx, q_data_src);
- if (ret < 0)
- return ret;
-
buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
bitstream_buf = vb2_dma_contig_plane_dma_addr(buf, 0);
bitstream_size = q_data_dst->sizeimage;
@@ -1311,7 +1327,6 @@ static void coda_seq_end_work(struct work_struct *work)
ctx->bitstream.vaddr, ctx->bitstream.size);
coda_free_framebuffers(ctx);
- coda_free_context_buffers(ctx);
mutex_unlock(&dev->coda_mutex);
mutex_unlock(&ctx->buffer_mutex);
@@ -1327,6 +1342,7 @@ static void coda_bit_release(struct coda_ctx *ctx)
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,
@@ -1338,6 +1354,27 @@ const struct coda_context_ops coda_bit_encode_ops = {
* Decoder context operations
*/
+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;
+ } else {
+ coda_free_context_buffers(ctx);
+ }
+
+ return 0;
+}
+
static int __coda_start_decoding(struct coda_ctx *ctx)
{
struct coda_q_data *q_data_src, *q_data_dst;
@@ -1356,11 +1393,6 @@ static int __coda_start_decoding(struct coda_ctx *ctx)
src_fourcc = q_data_src->fourcc;
dst_fourcc = q_data_dst->fourcc;
- /* Allocate per-instance buffers */
- ret = coda_alloc_context_buffers(ctx, q_data_src);
- if (ret < 0)
- return ret;
-
coda_write(dev, ctx->parabuf.paddr, CODA_REG_BIT_PARA_BUF_ADDR);
/* Update coda bitstream read and write pointers from kfifo */
@@ -1906,6 +1938,7 @@ static void coda_finish_decode(struct coda_ctx *ctx)
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,
diff --git a/drivers/media/platform/coda/coda-common.c b/drivers/media/platform/coda/coda-common.c
index 443886535230..a8a6c36a1f00 100644
--- a/drivers/media/platform/coda/coda-common.c
+++ b/drivers/media/platform/coda/coda-common.c
@@ -696,6 +696,26 @@ static int coda_s_fmt_vid_out(struct file *file, void *priv,
return coda_s_fmt(ctx, &f_cap);
}
+static int coda_reqbufs(struct file *file, void *priv,
+ struct v4l2_requestbuffers *rb)
+{
+ struct coda_ctx *ctx = fh_to_ctx(priv);
+ int ret;
+
+ ret = v4l2_m2m_reqbufs(file, ctx->fh.m2m_ctx, rb);
+ if (ret)
+ return ret;
+
+ /*
+ * Allow to allocate instance specific per-context buffers, such as
+ * bitstream ringbuffer, slice buffer, work buffer, etc. if needed.
+ */
+ if (rb->type == V4L2_BUF_TYPE_VIDEO_OUTPUT && ctx->ops->reqbufs)
+ return ctx->ops->reqbufs(ctx, rb);
+
+ return 0;
+}
+
static int coda_qbuf(struct file *file, void *priv,
struct v4l2_buffer *buf)
{
@@ -841,7 +861,7 @@ static const struct v4l2_ioctl_ops coda_ioctl_ops = {
.vidioc_try_fmt_vid_out = coda_try_fmt_vid_out,
.vidioc_s_fmt_vid_out = coda_s_fmt_vid_out,
- .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
+ .vidioc_reqbufs = coda_reqbufs,
.vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
.vidioc_qbuf = coda_qbuf,
diff --git a/drivers/media/platform/coda/coda.h b/drivers/media/platform/coda/coda.h
index 499049f3896b..57d070ce6665 100644
--- a/drivers/media/platform/coda/coda.h
+++ b/drivers/media/platform/coda/coda.h
@@ -178,6 +178,7 @@ struct coda_ctx;
struct coda_context_ops {
int (*queue_init)(void *priv, struct vb2_queue *src_vq,
struct vb2_queue *dst_vq);
+ int (*reqbufs)(struct coda_ctx *ctx, struct v4l2_requestbuffers *rb);
int (*start_streaming)(struct coda_ctx *ctx);
int (*prepare_run)(struct coda_ctx *ctx);
void (*finish_run)(struct coda_ctx *ctx);

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