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    Subject[PATCH v14 45/56] media: test-drivers: vivid: Increase max supported buffers for capture queues
    Date
    Change the maximum number of buffers of some capture queues in order
    to test max_num_buffers field.

    Allow to allocate up to:
    - 64 buffers for video capture queue.
    - 1024 buffers for sdr capture queue.
    - 32768 buffers for vbi capture queue.

    Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
    ---
    drivers/media/test-drivers/vivid/vivid-core.c | 14 ++++++++++++++
    1 file changed, 14 insertions(+)

    diff --git a/drivers/media/test-drivers/vivid/vivid-core.c b/drivers/media/test-drivers/vivid/vivid-core.c
    index 394c9f81ea72..353f035fcd19 100644
    --- a/drivers/media/test-drivers/vivid/vivid-core.c
    +++ b/drivers/media/test-drivers/vivid/vivid-core.c
    @@ -876,6 +876,20 @@ static int vivid_create_queue(struct vivid_dev *dev,
    q->type = buf_type;
    q->io_modes = VB2_MMAP | VB2_DMABUF;
    q->io_modes |= V4L2_TYPE_IS_OUTPUT(buf_type) ? VB2_WRITE : VB2_READ;
    +
    + /*
    + * The maximum number of buffers is 32768 if PAGE_SHIFT == 12,
    + * see also MAX_BUFFER_INDEX in videobuf2-core.c. It will be less if
    + * PAGE_SHIFT > 12, but then max_num_buffers will be clamped by
    + * videobuf2-core.c to MAX_BUFFER_INDEX.
    + */
    + if (buf_type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
    + q->max_num_buffers = 64;
    + if (buf_type == V4L2_BUF_TYPE_SDR_CAPTURE)
    + q->max_num_buffers = 1024;
    + if (buf_type == V4L2_BUF_TYPE_VBI_CAPTURE)
    + q->max_num_buffers = 32768;
    +
    if (allocators[dev->inst] != 1)
    q->io_modes |= VB2_USERPTR;
    q->drv_priv = dev;
    --
    2.39.2
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