From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
To: mchehab@kernel.org
Cc: Takanari Hayama <taki@igel.co.jp>,
airlied@linux.ie, dri-devel@lists.freedesktop.org,
linux-renesas-soc@vger.kernel.org,
kieran.bingham+renesas@ideasonboard.com,
linux-media@vger.kernel.org
Subject: Re: [PATCH v2 1/3] media: vsp1: add premultiplied alpha support
Date: Fri, 19 Aug 2022 05:38:28 +0300 [thread overview]
Message-ID: <Yv73pNxr62j+hYd5@pendragon.ideasonboard.com> (raw)
In-Reply-To: <Yv7u5cFdXIeGm5PQ@pendragon.ideasonboard.com>
Mauro, would you be fine with this patch going through the DRM tree for
v6.1 ? I don't foresee any risk of conflict with other changes to the
VSP driver scheduled for the next kernel version. If that's fine with
you, could you give an Acked-by ? Otherwise I can send you a pull
request to create an immutable branch and base the rest on it in my pull
request for DRM, but given how small this change is, it seems a bit
overkill.
On Fri, Aug 19, 2022 at 05:01:10AM +0300, Laurent Pinchart wrote:
> Hi Hayama-san,
>
> Thank you for the patch.
>
> On Wed, Aug 10, 2022 at 05:37:09PM +0900, Takanari Hayama wrote:
> > To support DRM blend mode in R-Car DU driver, we must be able to pass
> > a plane with the premultiplied alpha. Adding a new property to
> > vsp1_du_atomic_config allows the R-Car DU driver to pass the
> > premultiplied alpha plane.
> >
> > Signed-off-by: Takanari Hayama <taki@igel.co.jp>
> > ---
> > drivers/media/platform/renesas/vsp1/vsp1_drm.c | 2 ++
> > include/media/vsp1.h | 2 ++
> > 2 files changed, 4 insertions(+)
> >
> > diff --git a/drivers/media/platform/renesas/vsp1/vsp1_drm.c b/drivers/media/platform/renesas/vsp1/vsp1_drm.c
> > index 0c2507dc03d6..019e18976bd8 100644
> > --- a/drivers/media/platform/renesas/vsp1/vsp1_drm.c
> > +++ b/drivers/media/platform/renesas/vsp1/vsp1_drm.c
> > @@ -856,6 +856,8 @@ int vsp1_du_atomic_update(struct device *dev, unsigned int pipe_index,
> > rpf->mem.addr[1] = cfg->mem[1];
> > rpf->mem.addr[2] = cfg->mem[2];
> >
> > + rpf->format.flags = (cfg->premult) ? V4L2_PIX_FMT_FLAG_PREMUL_ALPHA : 0;
>
> I'll drop the parentheses when applying.
>
> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
>
> > +
> > vsp1->drm->inputs[rpf_index].crop = cfg->src;
> > vsp1->drm->inputs[rpf_index].compose = cfg->dst;
> > vsp1->drm->inputs[rpf_index].zpos = cfg->zpos;
> > diff --git a/include/media/vsp1.h b/include/media/vsp1.h
> > index cc1b0d42ce95..48f4a5023d81 100644
> > --- a/include/media/vsp1.h
> > +++ b/include/media/vsp1.h
> > @@ -51,6 +51,7 @@ int vsp1_du_setup_lif(struct device *dev, unsigned int pipe_index,
> > * @dst: destination rectangle on the display (integer coordinates)
> > * @alpha: alpha value (0: fully transparent, 255: fully opaque)
> > * @zpos: Z position of the plane (from 0 to number of planes minus 1)
> > + * @premult: true for premultiplied alpha
> > */
> > struct vsp1_du_atomic_config {
> > u32 pixelformat;
> > @@ -60,6 +61,7 @@ struct vsp1_du_atomic_config {
> > struct v4l2_rect dst;
> > unsigned int alpha;
> > unsigned int zpos;
> > + bool premult;
> > };
> >
> > /**
--
Regards,
Laurent Pinchart
next prev parent reply other threads:[~2022-08-19 2:38 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-10 8:37 [PATCH v2 0/3] Add DRM pixel blend mode support to R-Car DU Takanari Hayama
2022-08-10 8:37 ` [PATCH v2 1/3] media: vsp1: add premultiplied alpha support Takanari Hayama
2022-08-10 17:41 ` Sergey Shtylyov
2022-08-16 6:01 ` Takanari Hayama
2022-08-19 2:01 ` Laurent Pinchart
2022-08-19 2:04 ` Takanari Hayama
2022-08-19 2:38 ` Laurent Pinchart [this message]
2022-09-06 11:10 ` Mauro Carvalho Chehab
2022-08-10 8:37 ` [PATCH v2 2/3] drm: rcar-du: Add DRM_MODE_BLEND_PREMULTI support Takanari Hayama
2022-08-19 2:08 ` Laurent Pinchart
2022-08-19 3:05 ` Takanari Hayama
2022-08-10 8:37 ` [PATCH v2 3/3] drm: rcar-du: Add DRM_MODE_BLEND_PIXEL_NONE support Takanari Hayama
2022-08-19 2:10 ` Laurent Pinchart
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