Re: [PATCH] media: vsp1: tidyup VI6_HGT_LBn_H() macro

[Laurent Pinchart <laurent.pinchart@ideasonboard.com>]

Hello,

On Wed, Dec 11, 2019 at 12:59:57PM +0000, Kieran Bingham wrote:
> Hi Morimoto-san,
> 
> Thank you for the patch,

Likewise :-)

> On 11/12/2019 01:55, Kuninori Morimoto wrote:
> > 
> > From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
> > 
> > The address of VSP2_VI6_HGT_LBx_H are
> > 	VSP2_VI6_HGT_LB0_H : 0x3428
> > 	VSP2_VI6_HGT_LB1_H : 0x3430
> > 	VSP2_VI6_HGT_LB2_H : 0x3438
> > 	VSP2_VI6_HGT_LB3_H : 0x3440
> > 
> > Thus, VI6_HGT_LBn_H() macro should start from 0x3420 instead of 0x3430.
> > This patch fixup it.
> 
> I think this deserves a fixes tag:
> 
> Fixes: 26e0ca22c3b8 ("[media] v4l: Renesas R-Car VSP1 driver")

Given that this macro is not used, we could argue that it doesn't fix
anything yet :-) I'd rather avoid having this backported to stable
kernels as it's not useful to have it there, and thus not add a Fixes
tag. Kieran, would that be OK with you ?

> > Reported-by: Koji Matsuoka <koji.matsuoka.xm@renesas.com>
> > Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
> 
> Otherwise,
> 
> Yes I can clearly see that this offset is marked as H'3428 at page 32-39
> within the Gen3 datasheet.
> 
> Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

and taken in my branch.

> > ---
> >  drivers/media/platform/vsp1/vsp1_regs.h | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/drivers/media/platform/vsp1/vsp1_regs.h b/drivers/media/platform/vsp1/vsp1_regs.h
> > index 5c67ff9..fe3130d 100644
> > --- a/drivers/media/platform/vsp1/vsp1_regs.h
> > +++ b/drivers/media/platform/vsp1/vsp1_regs.h
> > @@ -706,7 +706,7 @@
> >  #define VI6_HGT_HUE_AREA_LOWER_SHIFT	16
> >  #define VI6_HGT_HUE_AREA_UPPER_SHIFT	0
> >  #define VI6_HGT_LB_TH			0x3424
> > -#define VI6_HGT_LBn_H(n)		(0x3438 + (n) * 8)
> > +#define VI6_HGT_LBn_H(n)		(0x3428 + (n) * 8)
> >  #define VI6_HGT_LBn_V(n)		(0x342c + (n) * 8)
> >  #define VI6_HGT_HISTO(m, n)		(0x3450 + (m) * 128 + (n) * 4)
> >  #define VI6_HGT_MAXMIN			0x3750

-- 
Regards,

Laurent Pinchart