linux-kernel - Re: [PATCH 2/3] media: rkisp1: debug: Add register dump for IS

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Message-ID: <ZWhaFL48cgdHsOPN@pyrite.rasen.tech>
Date:   Thu, 30 Nov 2023 18:47:00 +0900
From:   Paul Elder <paul.elder@...asonboard.com>
To:     Kieran Bingham <kieran.bingham@...asonboard.com>
Cc:     linux-media@...r.kernel.org, linux-rockchip@...ts.infradead.org,
        tomi.valkeinen@...asonboard.com, umang.jain@...asonboard.com,
        Dafna Hirschfeld <dafna@...tmail.com>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Heiko Stuebner <heiko@...ech.de>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] media: rkisp1: debug: Add register dump for IS

On Wed, Nov 29, 2023 at 08:05:42PM +0000, Kieran Bingham wrote:
> Quoting Paul Elder (2023-11-29 09:29:55)
> > Add register dump for the image stabilizer module to debugfs.
> > 
> 
> Is the Image Stabilizer on all variants of the ISP?
> 
> I.e. is it valid register space on the RK3399 implementation?

Yes, it is.

> 
> If so then:
> Reviewed-by: Kieran Bingham <kieran.bingham@...asonboard.com>
> 
> > Signed-off-by: Paul Elder <paul.elder@...asonboard.com>
> > ---
> >  .../platform/rockchip/rkisp1/rkisp1-debug.c    | 18 ++++++++++++++++++
> >  1 file changed, 18 insertions(+)
> > 
> > diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-debug.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-debug.c
> > index 71df3dc95e6f..f66b9754472e 100644
> > --- a/drivers/media/platform/rockchip/rkisp1/rkisp1-debug.c
> > +++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-debug.c
> > @@ -139,6 +139,21 @@ static int rkisp1_debug_dump_mi_mp_show(struct seq_file *m, void *p)
> >  }
> >  DEFINE_SHOW_ATTRIBUTE(rkisp1_debug_dump_mi_mp);
> >  
> > +static int rkisp1_debug_dump_is_show(struct seq_file *m, void *p)
> > +{
> > +       static const struct rkisp1_debug_register registers[] = {
> > +               RKISP1_DEBUG_SHD_REG(ISP_IS_H_OFFS),
> > +               RKISP1_DEBUG_SHD_REG(ISP_IS_V_OFFS),
> > +               RKISP1_DEBUG_SHD_REG(ISP_IS_H_SIZE),
> > +               RKISP1_DEBUG_SHD_REG(ISP_IS_V_SIZE),
> 
> I expect so as you haven't added the register macros in this series so
> they must already be there ...

Yep :)


Paul

> 
> 
> > +               { /* Sentinel */ },
> > +       };
> > +       struct rkisp1_device *rkisp1 = m->private;
> > +
> > +       return rkisp1_debug_dump_regs(rkisp1, m, 0, registers);
> > +}
> > +DEFINE_SHOW_ATTRIBUTE(rkisp1_debug_dump_is);
> > +
> >  #define RKISP1_DEBUG_DATA_COUNT_BINS   32
> >  #define RKISP1_DEBUG_DATA_COUNT_STEP   (4096 / RKISP1_DEBUG_DATA_COUNT_BINS)
> >  
> > @@ -235,6 +250,9 @@ void rkisp1_debug_init(struct rkisp1_device *rkisp1)
> >  
> >         debugfs_create_file("mi_mp", 0444, regs_dir, rkisp1,
> >                             &rkisp1_debug_dump_mi_mp_fops);
> > +
> > +       debugfs_create_file("is", 0444, regs_dir, rkisp1,
> > +                           &rkisp1_debug_dump_is_fops);
> >  }
> >  
> >  void rkisp1_debug_cleanup(struct rkisp1_device *rkisp1)
> > -- 
> > 2.39.2
> >