On 02/22/2018 09:46 PM, Laurent Pinchart wrote:
>>> From: Sergei Shtylyov <sergei.shtyl...@cogentembedded.com>
>>>
>>> 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...@hitachi.com>.
>>>
>>> Fixes: d455b45f8393 ("v4l: vsp1: Add support for new VSP2-BS, VSP2-DL and
>>> VSP2-D instances") Signed-off-by: Sergei Shtylyov
>>> <sergei.shtyl...@cogentembedded.com> Reviewed-by: Laurent Pinchart
>>> <laurent.pinchart+rene...@ideasonboard.com> [Removed braces, added
>>> VI6_IP_VERSION_MASK to improve readabiliy]
>>> Signed-off-by: Laurent Pinchart
>>> <laurent.pinchart+rene...@ideasonboard.com>
>>
>> [...]
>>
>>> 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.
OK, let's be leave it as is.
MBR, Sergei
