linux-kernel - Re: [PATCH v5 15/22] media: rzg2l-cru: Make use of v4l2_format

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Message-ID: <CA+V-a8uXrO8iPxhQEKb+HtVqXctQS5O4NAfFTr2Cfrci9Qd_UQ@mail.gmail.com>
Date: Fri, 18 Oct 2024 13:40:48 +0100
From: "Lad, Prabhakar" <prabhakar.csengg@...il.com>
To: Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc: Mauro Carvalho Chehab <mchehab@...nel.org>, Hans Verkuil <hverkuil-cisco@...all.nl>, 
	Sakari Ailus <sakari.ailus@...ux.intel.com>, linux-media@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-renesas-soc@...r.kernel.org, 
	Biju Das <biju.das.jz@...renesas.com>, 
	Fabrizio Castro <fabrizio.castro.jz@...esas.com>, 
	Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: Re: [PATCH v5 15/22] media: rzg2l-cru: Make use of v4l2_format_info() helpers

Hi Laurent,

On Fri, Oct 18, 2024 at 1:26 PM Laurent Pinchart
<laurent.pinchart@...asonboard.com> wrote:
>
> On Fri, Oct 18, 2024 at 12:45:36PM +0100, Lad, Prabhakar wrote:
> > On Tue, Oct 15, 2024 at 11:33 AM Laurent Pinchart wrote:
> > > On Fri, Oct 11, 2024 at 06:30:45PM +0100, Prabhakar wrote:
> > > > From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
> > > >
> > > > Make use of v4l2_format_info() helpers to determine the input and
> > > > output formats.
> > > >
> > > > Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
> > > > ---
> > > >  .../platform/renesas/rzg2l-cru/rzg2l-video.c  | 22 ++++++-------------
> > > >  1 file changed, 7 insertions(+), 15 deletions(-)
> > > >
> > > > diff --git a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c
> > > > index 8932fab7c656..0cc69a7440bf 100644
> > > > --- a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c
> > > > +++ b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c
> > > > @@ -300,21 +300,12 @@ static void rzg2l_cru_initialize_axi(struct rzg2l_cru_dev *cru)
> > > >       rzg2l_cru_write(cru, AMnAXIATTR, amnaxiattr);
> > > >  }
> > > >
> > > > -static void rzg2l_cru_csi2_setup(struct rzg2l_cru_dev *cru, bool *input_is_yuv,
> > > > +static void rzg2l_cru_csi2_setup(struct rzg2l_cru_dev *cru,
> > > >                                const struct rzg2l_cru_ip_format *ip_fmt,
> > > >                                u8 csi_vc)
> > > >  {
> > > >       u32 icnmc = ICnMC_INF(ip_fmt->datatype);
> > > >
> > > > -     switch (ip_fmt->code) {
> > > > -     case MEDIA_BUS_FMT_UYVY8_1X16:
> > > > -             *input_is_yuv = true;
> > > > -             break;
> > > > -     default:
> > > > -             *input_is_yuv = false;
> > > > -             break;
> > > > -     }
> > > > -
> > > >       icnmc |= (rzg2l_cru_read(cru, ICnMC) & ~ICnMC_INF_MASK);
> > > >
> > > >       /* Set virtual channel CSI2 */
> > > > @@ -327,19 +318,17 @@ static int rzg2l_cru_initialize_image_conv(struct rzg2l_cru_dev *cru,
> > > >                                          struct v4l2_mbus_framefmt *ip_sd_fmt,
> > > >                                          u8 csi_vc)
> > > >  {
> > > > +     const struct v4l2_format_info *src_finfo, *dst_finfo;
> > > >       const struct rzg2l_cru_ip_format *cru_ip_fmt;
> > > > -     bool output_is_yuv = false;
> > > > -     bool input_is_yuv = false;
> > > >       u32 icndmr;
> > > >
> > > >       cru_ip_fmt = rzg2l_cru_ip_code_to_fmt(ip_sd_fmt->code);
> > > > -     rzg2l_cru_csi2_setup(cru, &input_is_yuv, cru_ip_fmt, csi_vc);
> > > > +     rzg2l_cru_csi2_setup(cru, cru_ip_fmt, csi_vc);
> > > >
> > > >       /* Output format */
> > > >       switch (cru->format.pixelformat) {
> > > >       case V4L2_PIX_FMT_UYVY:
> > > >               icndmr = ICnDMR_YCMODE_UYVY;
> > > > -             output_is_yuv = true;
> > > >               break;
> > > >       default:
> > > >               dev_err(cru->dev, "Invalid pixelformat (0x%x)\n",
> > > > @@ -347,8 +336,11 @@ static int rzg2l_cru_initialize_image_conv(struct rzg2l_cru_dev *cru,
> > > >               return -EINVAL;
> > > >       }
> > > >
> > > > +     src_finfo = v4l2_format_info(cru_ip_fmt->format);
> > > > +     dst_finfo = v4l2_format_info(cru->format.pixelformat);
> > >
> > > It would be a bit more efficient to add a yuv boolean field to the
> > > rzg2l_cru_ip_format structure, as you already have looked up cru_ip_fmt
> > > for the IP subdev format.
> >
> > I will consider this change, when adding support for the RZ/V2H SoC,
> > hope that's OK for you.
>
> It's not a blocker, it can be done on top indeed. If you end up
> submitting a v6 you could add a patch on top already, but otherwise
> later is fine too.
>
I was intending to send a v6 anyway with the updated commit messages,
so I will add a new patch on top.

Cheers,
Prabhakar