[PATCH v4 08/19] media: uapi: h264: Drop SLICE_PARAMS 'size' field

Ezequiel Garcia
2020-08-25T03:53:48Z

The SLICE_PARAMS control is intended for slice-based
devices. In this mode, the OUTPUT buffer contains
a single slice, and so the buffer's plane payload size
can be used to query the slice size.

To reduce the API surface drop the size from the
SLICE_PARAMS control.

A follow-up change will remove other members in SLICE_PARAMS
so we don't need to add padding fields here.

Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Tested-by: Jonas Karlman <jonas@kwiboo.se>
---
Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst | 3 ---
drivers/staging/media/sunxi/cedrus/cedrus_h264.c | 7 +++----
include/media/h264-ctrls.h | 3 ---
3 files changed, 3 insertions(+), 10 deletions(-)

diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
index 3808c46718ad..e74a2531ab67 100644
--- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
+++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
@@ -1760,9 +1760,6 @@ enum v4l2_mpeg_video_h264_hierarchical_coding_type -
:stub-columns: 0
:widths: 1 1 2

- * - __u32
- - ``size``
- -
* - __u32
- ``start_byte_offset``
Offset (in bytes) from the beginning of the OUTPUT buffer to the start
diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
index d5636dbbb622..7d9bd5860a1b 100644
--- a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
+++ b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
@@ -324,17 +324,16 @@ static void cedrus_set_params(struct cedrus_ctx *ctx,
struct vb2_buffer *src_buf = &run->src->vb2_buf;
struct cedrus_dev *dev = ctx->dev;
dma_addr_t src_buf_addr;
- u32 len = slice->size * 8;
+ size_t slice_bytes = vb2_get_plane_payload(src_buf, 0);
unsigned int pic_width_in_mbs;
bool mbaff_pic;
u32 reg;

- cedrus_write(dev, VE_H264_VLD_LEN, len);
+ cedrus_write(dev, VE_H264_VLD_LEN, slice_bytes * 8);
cedrus_write(dev, VE_H264_VLD_OFFSET, 0);

src_buf_addr = vb2_dma_contig_plane_dma_addr(src_buf, 0);
- cedrus_write(dev, VE_H264_VLD_END,
- src_buf_addr + vb2_get_plane_payload(src_buf, 0));
+ cedrus_write(dev, VE_H264_VLD_END, src_buf_addr + slice_bytes);
cedrus_write(dev, VE_H264_VLD_ADDR,
VE_H264_VLD_ADDR_VAL(src_buf_addr) |
VE_H264_VLD_ADDR_FIRST | VE_H264_VLD_ADDR_VALID |
diff --git a/include/media/h264-ctrls.h b/include/media/h264-ctrls.h
index 91f6f0d43e11..77d0ec51ae43 100644
--- a/include/media/h264-ctrls.h
+++ b/include/media/h264-ctrls.h
@@ -163,9 +163,6 @@ struct v4l2_h264_reference {
};

struct v4l2_ctrl_h264_slice_params {
- /* Size in bytes, including header */
- __u32 size;
-
/* Offset in bytes to the start of slice in the OUTPUT buffer. */
__u32 start_byte_offset;

--
2.27.0