Hi Laurent,
Almost OK :-)
Two small issues remain, see below.
On 03/04/15 15:51, Laurent Pinchart wrote:
> Xilinx platforms have no hardwired video capture or video processing
> interface. Users create capture and memory to memory processing
> pipelines in the FPGA fabric to suit their particular needs, by
> instantiating video IP cores from a large library.
>
> The Xilinx Video IP core is a framework that models a video pipeline
> described in the device tree and expose the pipeline to userspace
> through the media controller and V4L2 APIs.
>
> Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
> Signed-off-by: Hyun Kwon <hyun.kwon@xxxxxxxxxx>
> Signed-off-by: Radhey Shyam Pandey <radheys@xxxxxxxxxx>
> Signed-off-by: Michal Simek <michal.simek@xxxxxxxxxx>
>
> ---
>
> Cc: devicetree@xxxxxxxxxxxxxxx
>
> Changes since v5:
>
> - Report frame field as V4L2_FIELD_NONE
> - Update to the mainline pad-level subdev API changes
> - Add VIDIOC_CREATE_BUFS support
> - Add a comment to explain the lack of VB2_READ and VB2_WRITE
>
> Changes since v4:
>
> - Use a DT format description closer to the hardware
> - Document the xvip_device clk field
>
> Changes since v3:
>
> - Rename V4L2_MBUS_FMT_* to MEDIA_BUS_FMT_*
> - Cleanup unused vdma configuration.
> - Add resource init and cleanup helpers
> - Return buffers to vb2 when media pipeline start fails
>
> Changes since v2:
>
> - Remove explicit trailing \0 after snprintf
> - Don't hardcode colorspace
>
> Changes since v1:
>
> - Remove unnecessary fields from struct xvip_dma_buffer
> - Fix querycap capabilities and bus_info reporting
> - Refuse to set format when the queue is busy
> - Return buffers to vb2 when start_streaming fails
> - Use vb2 fops and ioctl ops
>
> v1 was made of the following individual patches.
>
> media: xilinx: vip: Add yuv444 and bayer formats
> media: xilinx: vip: Remove _TIMING_ from register definition
> media: xilinx: dma: Add vidioc_enum_fmt_vid_cap callback
> media: xilinx: dma: Fix alignments of xvip_dma_fops definition
> media: xilinx: dma: Workaround for bytesperline
> media: xilinx: vip: Add default min/max height/width definitions
> media: xilinx: vip: Add common sink/source pad IDs
> media: xilinx: vip: Add xvip_set_format_size()
> media: xilinx: vip: Add xvip_enum_mbus_code()
> media: xilinx: vip: Add xvip_enum_frame_size()
> media: xilinx: vip: Add register clear and set functions
> media: xilinx: vip: Add xvip_start()
> media: xilinx: vip: Add xvip_stop()
> media: xilinx: vip: Add xvip_set_frame_size()
> media: xilinx: vip: Add enable/disable reg update functions
> media: xilinx: vip: Add xvip_print_version()
> media: xilinx: vip: Add xvip_reset()
> media: xilinx: vip: Add xvip_get_frame_size()
> media: xilinx: vip: Add suspend/resume helper functions
> media: xilinx: vip: Change the return value of xvip_get_format_by_code()
> media: xilinx: vip: Change the return value of xvip_of_get_format()
> media: xilinx: vip: Change the return value of xvip_get_format_by_fourcc()
> media: xilinx: vipp: Remove of_match_ptr()
> media: xilinx: vipp: Add control to inherit subdevice controls
> media: xilinx: Make disconnected video nodes return -EPIPE at stream on
> media: xilinx: Make links configurable
> media: xilinx: Rename xvip_pipeline_entity to xvip_graph_entity
> media: xilinx: Rename xvip_pipeline to xvip_composite_device
> media: xilinx: Rename xvipp_pipeline_* functions to xvip_graph_*
> media: xilinx: Rename xvipp_v4l2_* functions to xvip_composite_v4l2_*
> media: xilinx: Rename xvipp_* functions to xvip_composite_*
> media: xilinx: Move pipeline management code to xilinx-dma.c
> media: xilinx: Add missing mutex_destroy call
> media: xilinx: Create xvip_pipeline structure
> media: xilinx: Support more than two VDMAs in DT
> media: xilinx: dma: Change vdma configuration to cyclic-mode
> Revert "media: xilinx: dma: Workaround for bytesperline"
> media: xilinx: Added DMA error handling
> media: xilinx: Fix error handling
> media: xilinx: Reordered mutexes initialization
> media: xilinx: vipp: Add devicetree bindings documentation
> media: xilinx: Reordered mutexes initialization
> media: xilinx: Set format description in enum_fmt
> media: xilinx: Remove global control handler
> media: xilinx: dma: Use the interleaved dmaengine API
> xilinx: Remove .owner field for drivers
> v4l: xilinx: video: Rename compatible string to xlnx,video
> v4l: xilinx: Remove axi- prefix from DT properties
> v4l: xilinx: dma: Give back queued buffers at streamoff time
> ---
> .../devicetree/bindings/media/xilinx/video.txt | 35 +
> .../bindings/media/xilinx/xlnx,video.txt | 55 ++
> MAINTAINERS | 9 +
> drivers/media/platform/Kconfig | 1 +
> drivers/media/platform/Makefile | 2 +
> drivers/media/platform/xilinx/Kconfig | 10 +
> drivers/media/platform/xilinx/Makefile | 3 +
> drivers/media/platform/xilinx/xilinx-dma.c | 766 +++++++++++++++++++++
> drivers/media/platform/xilinx/xilinx-dma.h | 109 +++
> drivers/media/platform/xilinx/xilinx-vip.c | 311 +++++++++
> drivers/media/platform/xilinx/xilinx-vip.h | 238 +++++++
> drivers/media/platform/xilinx/xilinx-vipp.c | 669 ++++++++++++++++++
> drivers/media/platform/xilinx/xilinx-vipp.h | 49 ++
> include/dt-bindings/media/xilinx-vip.h | 39 ++
> 14 files changed, 2296 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/media/xilinx/video.txt
> create mode 100644 Documentation/devicetree/bindings/media/xilinx/xlnx,video.txt
> create mode 100644 drivers/media/platform/xilinx/Kconfig
> create mode 100644 drivers/media/platform/xilinx/Makefile
> create mode 100644 drivers/media/platform/xilinx/xilinx-dma.c
> create mode 100644 drivers/media/platform/xilinx/xilinx-dma.h
> create mode 100644 drivers/media/platform/xilinx/xilinx-vip.c
> create mode 100644 drivers/media/platform/xilinx/xilinx-vip.h
> create mode 100644 drivers/media/platform/xilinx/xilinx-vipp.c
> create mode 100644 drivers/media/platform/xilinx/xilinx-vipp.h
> create mode 100644 include/dt-bindings/media/xilinx-vip.h
>
<snip>
> diff --git a/drivers/media/platform/xilinx/xilinx-dma.c b/drivers/media/platform/xilinx/xilinx-dma.c
> new file mode 100644
> index 0000000..10209c2
> --- /dev/null
> +++ b/drivers/media/platform/xilinx/xilinx-dma.c
<snip>
> +/* -----------------------------------------------------------------------------
> + * Subdev operations handlers
> + */
> +
> +/**
> + * xvip_enum_mbus_code - Enumerate the media format code
> + * @subdev: V4L2 subdevice
> + * @cfg: V4L2 subdev pad configuration
> + * @code: returning media bus code
> + *
> + * Enumerate the media bus code of the subdevice. Return the corresponding
> + * pad format code. This function only works for subdevices with fixed format
> + * on all pads. Subdevices with multiple format should have their own
> + * function to enumerate mbus codes.
> + *
> + * Return: 0 if the media bus code is found, or -EINVAL if the format index
> + * is not valid.
> + */
> +int xvip_enum_mbus_code(struct v4l2_subdev *subdev,
> + struct v4l2_subdev_pad_config *cfg,
> + struct v4l2_subdev_mbus_code_enum *code)
> +{
> + struct v4l2_mbus_framefmt *format;
> +
> + if (code->index)
> + return -EINVAL;
> +
You need to handle the case where code->which == ACTIVE (in which case
cfg can be NULL).
> + format = v4l2_subdev_get_try_format(subdev, cfg, code->pad);
> +
> + code->code = format->code;
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(xvip_enum_mbus_code);
> +
> +/**
> + * xvip_enum_frame_size - Enumerate the media bus frame size
> + * @subdev: V4L2 subdevice
> + * @cfg: V4L2 subdev pad configuration
> + * @fse: returning media bus frame size
> + *
> + * This function is a drop-in implementation of the subdev enum_frame_size pad
> + * operation. It assumes that the subdevice has one sink pad and one source
> + * pad, and that the format on the source pad is always identical to the
> + * format on the sink pad. Entities with different requirements need to
> + * implement their own enum_frame_size handlers.
> + *
> + * Return: 0 if the media bus frame size is found, or -EINVAL
> + * if the index or the code is not valid.
> + */
> +int xvip_enum_frame_size(struct v4l2_subdev *subdev,
> + struct v4l2_subdev_pad_config *cfg,
> + struct v4l2_subdev_frame_size_enum *fse)
> +{
> + struct v4l2_mbus_framefmt *format;
> +
Ditto.
> + format = v4l2_subdev_get_try_format(subdev, cfg, fse->pad);
> +
> + if (fse->index || fse->code != format->code)
> + return -EINVAL;
> +
> + if (fse->pad == XVIP_PAD_SINK) {
> + fse->min_width = XVIP_MIN_WIDTH;
> + fse->max_width = XVIP_MAX_WIDTH;
> + fse->min_height = XVIP_MIN_HEIGHT;
> + fse->max_height = XVIP_MAX_HEIGHT;
> + } else {
> + /* The size on the source pad is fixed and always identical to
> + * the size on the sink pad.
> + */
> + fse->min_width = format->width;
> + fse->max_width = format->width;
> + fse->min_height = format->height;
> + fse->max_height = format->height;
> + }
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(xvip_enum_frame_size);
Regards,
Hans
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