Hi Laurent,
Thanks for your feedback.
On 2018-03-02 11:53:54 +0200, Laurent Pinchart wrote:
> Hi Niklas,
>
> Thank you for the patch.
>
> On Friday, 2 March 2018 03:57:34 EET Niklas Söderlund wrote:
> > Part of the format alignment and checking can be shared with the Gen3
> > format handling. Break that part out to a separate function.
> >
> > Signed-off-by: Niklas Söderlund <niklas.soderlund+rene...@ragnatech.se>
> > ---
> > drivers/media/platform/rcar-vin/rcar-v4l2.c | 96 +++++++++++++++-----------
> > 1 file changed, 54 insertions(+), 42 deletions(-)
> >
> > diff --git a/drivers/media/platform/rcar-vin/rcar-v4l2.c
> > b/drivers/media/platform/rcar-vin/rcar-v4l2.c index
> > b94ca9ffb1d3b323..3290e603b44cdf3a 100644
> > --- a/drivers/media/platform/rcar-vin/rcar-v4l2.c
> > +++ b/drivers/media/platform/rcar-vin/rcar-v4l2.c
> > @@ -87,6 +87,59 @@ static u32 rvin_format_sizeimage(struct v4l2_pix_format
> > *pix) return pix->bytesperline * pix->height;
> > }
> >
> > +static int rvin_format_align(struct rvin_dev *vin, struct v4l2_pix_format
> > *pix)
> > +{
> > + u32 walign;
> > +
> > + if (!rvin_format_from_pixel(pix->pixelformat) ||
> > + (vin->info->model == RCAR_M1 &&
> > + pix->pixelformat == V4L2_PIX_FMT_XBGR32))
> > + pix->pixelformat = RVIN_DEFAULT_FORMAT;
> > +
> > + switch (pix->field) {
> > + case V4L2_FIELD_TOP:
> > + case V4L2_FIELD_BOTTOM:
> > + case V4L2_FIELD_NONE:
> > + case V4L2_FIELD_INTERLACED_TB:
> > + case V4L2_FIELD_INTERLACED_BT:
> > + case V4L2_FIELD_INTERLACED:
> > + break;
> > + case V4L2_FIELD_ALTERNATE:
> > + /*
> > + * Driver do not (yet) support outputting ALTERNATE to a
> > + * userspace. It does support outputting INTERLACED so use
> > + * the VIN hardware to combine the two fields.
> > + */
> > + pix->field = V4L2_FIELD_INTERLACED;
> > + pix->height *= 2;
> > + break;
> > + default:
> > + pix->field = RVIN_DEFAULT_FIELD;
> > + break;
> > + }
> > +
> > + /* HW limit width to a multiple of 32 (2^5) for NV16 else 2 (2^1) */
> > + walign = vin->format.pixelformat == V4L2_PIX_FMT_NV16 ? 5 : 1;
> > +
> > + /* Limit to VIN capabilities */
> > + v4l_bound_align_image(&pix->width, 2, vin->info->max_width, walign,
> > + &pix->height, 4, vin->info->max_height, 2, 0);
> > +
> > + pix->bytesperline = rvin_format_bytesperline(pix);
> > + pix->sizeimage = rvin_format_sizeimage(pix);
> > +
> > + if (vin->info->model == RCAR_M1 &&
> > + pix->pixelformat == V4L2_PIX_FMT_XBGR32) {
> > + vin_err(vin, "pixel format XBGR32 not supported on M1\n");
> > + return -EINVAL;
> > + }
>
> This can't happen as you set the pixel format to the default earlier in the
> same case.
This is the result of a bad re-ordering of the patches for v11 and
should be removed. Thanks for spotting this! Sometime I get blind to my
own code.
>
> > + vin_dbg(vin, "Format %ux%u bpl: %d size: %d\n",
> > + pix->width, pix->height, pix->bytesperline, pix->sizeimage);
>
> While at it you could use %u for bpl and size.
Thanks.
>
> > +
> > + return 0;
> > +}
> > +
> > /* ------------------------------------------------------------------------
> > * V4L2
> > */
> > @@ -184,55 +237,14 @@ static int __rvin_try_format(struct rvin_dev *vin,
> > struct v4l2_pix_format *pix,
> > struct rvin_source_fmt *source)
> > {
> > - u32 walign;
> > int ret;
> >
> > - if (!rvin_format_from_pixel(pix->pixelformat) ||
> > - (vin->info->model == RCAR_M1 &&
> > - pix->pixelformat == V4L2_PIX_FMT_XBGR32))
> > - pix->pixelformat = RVIN_DEFAULT_FORMAT;
> > -
> > /* Limit to source capabilities */
> > ret = __rvin_try_format_source(vin, which, pix, source);
>
> This functions uses the pixel format. Isn't it a problem that you don't first
> set it to the default if the requested pixel format isn't supported ?
Hum, yes it might be! I never thought about it but yes it's probably
best to keep this check here. Thanks!
>
> > if (ret)
> > return ret;
> >
> > - switch (pix->field) {
> > - case V4L2_FIELD_TOP:
> > - case V4L2_FIELD_BOTTOM:
> > - case V4L2_FIELD_NONE:
> > - case V4L2_FIELD_INTERLACED_TB:
> > - case V4L2_FIELD_INTERLACED_BT:
> > - case V4L2_FIELD_INTERLACED:
> > - break;
> > - case V4L2_FIELD_ALTERNATE:
> > - /*
> > - * Driver do not (yet) support outputting ALTERNATE to a
> > - * userspace. It does support outputting INTERLACED so use
> > - * the VIN hardware to combine the two fields.
> > - */
> > - pix->field = V4L2_FIELD_INTERLACED;
> > - pix->height *= 2;
> > - break;
> > - default:
> > - pix->field = RVIN_DEFAULT_FIELD;
> > - break;
> > - }
> > -
> > - /* HW limit width to a multiple of 32 (2^5) for NV16 else 2 (2^1) */
> > - walign = vin->format.pixelformat == V4L2_PIX_FMT_NV16 ? 5 : 1;
> > -
> > - /* Limit to VIN capabilities */
> > - v4l_bound_align_image(&pix->width, 2, vin->info->max_width, walign,
> > - &pix->height, 4, vin->info->max_height, 2, 0);
> > -
> > - pix->bytesperline = rvin_format_bytesperline(pix);
> > - pix->sizeimage = rvin_format_sizeimage(pix);
> > -
> > - vin_dbg(vin, "Format %ux%u bpl: %d size: %d\n",
> > - pix->width, pix->height, pix->bytesperline, pix->sizeimage);
> > -
> > - return 0;
> > + return rvin_format_align(vin, pix);
> > }
> >
> > static int rvin_querycap(struct file *file, void *priv,
>
>
> --
> Regards,
>
> Laurent Pinchart
>
--
Regards,
Niklas Söderlund
