Re: [PATCH 08/11] media: cedrus: prefer untiled capture format

Jernej Škrabec
2022-10-25T15:16:26Z

Dne torek, 25. oktober 2022 ob 17:05:16 CEST je Paul Kocialkowski napisal(a):
> Hi Jernej,
>
> On Mon 24 Oct 22, 22:15, Jernej Skrabec wrote:
> > While all generations of display engine on Allwinner SoCs support
> > untiled format, only first generation supports tiled format. Let's
> > move untiled format up, so it can be picked before tiled one. If
> > Cedrus variant doesn't support untiled format, tiled will still be
> > picked as default format.
>
> Makes sense to me. Of course the order shouldn't matter to smart-enough
> userspace but it doesn't hurt to serve the most generic case first.

Per Documentation/userspace-api/media/v4l/dev-stateless-decoder.rst driver
should select most appropriate format for current platform by default. Setting
capture format is optional by aforementioned document.

Best regards,
Jernej

>
> Acked-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
>
> Cheers,
>
> Paul
>
> > Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>
> > ---
> >
> > drivers/staging/media/sunxi/cedrus/cedrus_video.c | 6 +++---
> > 1 file changed, 3 insertions(+), 3 deletions(-)
> >
> > diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_video.c
> > b/drivers/staging/media/sunxi/cedrus/cedrus_video.c index
> > 3591bf9d7d9c..f9f723ea3f79 100644
> > --- a/drivers/staging/media/sunxi/cedrus/cedrus_video.c
> > +++ b/drivers/staging/media/sunxi/cedrus/cedrus_video.c
> > @@ -56,13 +56,13 @@ static struct cedrus_format cedrus_formats[] = {
> >
> > .capabilities = CEDRUS_CAPABILITY_VP8_DEC,
> >
> > },
> > {
> >
> > - .pixelformat = V4L2_PIX_FMT_NV12_32L32,
> > + .pixelformat = V4L2_PIX_FMT_NV12,
> >
> > .directions = CEDRUS_DECODE_DST,
> >
> > + .capabilities = CEDRUS_CAPABILITY_UNTILED,
> >
> > },
> > {
> >
> > - .pixelformat = V4L2_PIX_FMT_NV12,
> > + .pixelformat = V4L2_PIX_FMT_NV12_32L32,
> >
> > .directions = CEDRUS_DECODE_DST,
> >
> > - .capabilities = CEDRUS_CAPABILITY_UNTILED,
> >
> > },
> >
> > };