Hi Sergei,
On Thursday, 22 February 2018 20:34:37 EET Sergei Shtylyov wrote:
> On 02/22/2018 07:32 PM, Laurent Pinchart wrote:
> > From: Sergei Shtylyov <sergei.shtylyov@xxxxxxxxxxxxxxxxxx>
> >
> > Commit d455b45f8393 ("v4l: vsp1: Add support for new VSP2-BS, VSP2-DL,
> > and VSP2-D instances") added support for the VSP2-D found in the R-Car
> > V3M (R8A77970) but the video output that VSP2-D sends to DU has a greenish
> > garbage-like line repeated every 8 screen rows. It turns out that R-Car
> > V3M has the LIF0 buffer attribute register that you need to set to a non-
> > default value in order to get rid of the output artifacts.
> >
> > Based on the original (and large) patch by Daisuke Matsushita
> > <daisuke.matsushita.ns@xxxxxxxxxxx>.
> >
> > Fixes: d455b45f8393 ("v4l: vsp1: Add support for new VSP2-BS, VSP2-DL and
> > VSP2-D instances") Signed-off-by: Sergei Shtylyov
> > <sergei.shtylyov@xxxxxxxxxxxxxxxxxx> Reviewed-by: Laurent Pinchart
> > <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx> [Removed braces, added
> > VI6_IP_VERSION_MASK to improve readabiliy]
> > Signed-off-by: Laurent Pinchart
> > <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
>
> [...]
>
> > diff --git a/drivers/media/platform/vsp1/vsp1_regs.h
> > b/drivers/media/platform/vsp1/vsp1_regs.h index
> > b1912c83a1da..dae0c1901297 100644
> > --- a/drivers/media/platform/vsp1/vsp1_regs.h
> > +++ b/drivers/media/platform/vsp1/vsp1_regs.h
>
> [...]
>
> > @@ -705,6 +710,7 @@
> > */
> >
> > #define VI6_IP_VERSION 0x3f00
> >
> > +#define VI6_IP_VERSION_MASK (0xffff << 0)
>
> Perhaps (VI6_IP_VERSION_MODEL_MASK | VI6_IP_VERSION_SOC_MASK) would be
> clearer?
I thought about it and the line length went over 80 characters so I went for
an easy solution. I can change it if you want.
--
Regards,
Laurent Pinchart
