Re: [PATCH v14 56/56] media: test-drivers: Use helper for DELETE_BUFS ioctl

Benjamin Gaignard
2023-11-09T09:46:50Z

Le 09/11/2023 à 10:43, Tomasz Figa a écrit :
> On Tue, Oct 31, 2023 at 05:31:04PM +0100, Benjamin Gaignard wrote:
>> Allow test drivers to use DELETE_BUFS by adding vb2_ioctl_delete_bufs() helper.
>>
>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>> ---
>> drivers/media/test-drivers/vicodec/vicodec-core.c | 2 ++
>> drivers/media/test-drivers/vimc/vimc-capture.c | 2 ++
>> drivers/media/test-drivers/visl/visl-video.c | 2 ++
>> drivers/media/test-drivers/vivid/vivid-core.c | 13 ++++++++++---
>> 4 files changed, 16 insertions(+), 3 deletions(-)
>>
>> diff --git a/drivers/media/test-drivers/vicodec/vicodec-core.c b/drivers/media/test-drivers/vicodec/vicodec-core.c
>> index 69cbe2c094e1..f14a8fd506d0 100644
>> --- a/drivers/media/test-drivers/vicodec/vicodec-core.c
>> +++ b/drivers/media/test-drivers/vicodec/vicodec-core.c
>> @@ -1339,6 +1339,7 @@ static const struct v4l2_ioctl_ops vicodec_ioctl_ops = {
>> .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
>> .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
>> .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
>> + .vidioc_delete_bufs = v4l2_m2m_ioctl_delete_bufs,
>>
>> .vidioc_streamon = v4l2_m2m_ioctl_streamon,
>> .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
>> @@ -1725,6 +1726,7 @@ static int queue_init(void *priv, struct vb2_queue *src_vq,
>> dst_vq->mem_ops = &vb2_vmalloc_memops;
>> dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
>> dst_vq->lock = src_vq->lock;
>> + dst_vq->supports_delete_bufs = true;
> Since we have to explicitly provide the vidioc_delete_bufs callback anyway,
> is there any value in having a separate supports_delete_bufs flag? Or we
> envision that some drivers would support deleting buffers only for some
> queues?

That exactly the case for Hantro driver, it can support deleting buffers on
capture queue but not on output queue.

>
> Best regards,
> Tomasz
>