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

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Date:   Thu, 30 Nov 2023 15:42:16 +0200
From:   Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:     Paul Elder <paul.elder@...asonboard.com>
Cc:     linux-media@...r.kernel.org, linux-rockchip@...ts.infradead.org,
        kieran.bingham@...asonboard.com, tomi.valkeinen@...asonboard.com,
        umang.jain@...asonboard.com, Dafna Hirschfeld <dafna@...tmail.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Heiko Stuebner <heiko@...ech.de>,
        "moderated list:ARM/Rockchip SoC support" 
        <linux-arm-kernel@...ts.infradead.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/3] media: rkisp1: debug: Add register dump for IS

Hi Paul,

Thank you for the patch.

On Wed, Nov 29, 2023 at 06:29:55PM +0900, Paul Elder wrote:
> Add register dump for the image stabilizer module to debugfs.
> 
> 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),

As these are ISP registers, how about adding them to the list of ISP
registers ?

    media: rkisp1: debug: Add register dump for IS

    Add register dump for the ISP image stabilizer module to debugfs. This
    helps debugging issues related to digital zoom.

    Signed-off-by: Paul Elder <paul.elder@...asonboard.com>
    Signed-off-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>

diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-debug.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-debug.c
index 71df3dc95e6f..d2fbed42164e 100644
--- a/drivers/media/platform/rockchip/rkisp1/rkisp1-debug.c
+++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-debug.c
@@ -92,6 +92,10 @@ static int rkisp1_debug_dump_isp_regs_show(struct seq_file *m, void *p)
 		RKISP1_DEBUG_REG(ISP_FLAGS_SHD),
 		RKISP1_DEBUG_REG(ISP_RIS),
 		RKISP1_DEBUG_REG(ISP_ERR),
+		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),
 		{ /* Sentinel */ },
 	};
 	struct rkisp1_device *rkisp1 = m->private;


> +		{ /* 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)

-- 
Regards,

Laurent Pinchart