From: Jacopo Mondi <jacopo@jmondi.org>
To: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Cc: sakari.ailus@iki.fi, linux-media@vger.kernel.org,
linux-renesas-soc@vger.kernel.org
Subject: Re: [PATCH] fixes! [max9286]: Validate link formats
Date: Tue, 19 May 2020 09:56:01 +0200 [thread overview]
Message-ID: <20200519075601.wdykflbxgvqvfl3x@uno.localdomain> (raw)
In-Reply-To: <20200518161159.2185855-1-kieran.bingham+renesas@ideasonboard.com>
Hi Kieran,
On Mon, May 18, 2020 at 05:11:59PM +0100, Kieran Bingham wrote:
> Disallow setting a format on the source link, but enable link validation
> by returning the format of the first bound source when getting the
> format of the source pad.
>
> Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
> ---
> drivers/media/i2c/max9286.c | 17 +++++++++++++----
> 1 file changed, 13 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/media/i2c/max9286.c b/drivers/media/i2c/max9286.c
> index ef824d2b26b8..6c01595936d7 100644
> --- a/drivers/media/i2c/max9286.c
> +++ b/drivers/media/i2c/max9286.c
> @@ -711,7 +711,10 @@ static int max9286_set_fmt(struct v4l2_subdev *sd,
> struct max9286_priv *priv = sd_to_max9286(sd);
> struct v4l2_mbus_framefmt *cfg_fmt;
>
> - if (format->pad >= MAX9286_SRC_PAD)
> + /* \todo: Multiplexed streams support
I know where \todo comes from, but it's usually TODO.
Also
/*
* TODO:
if the comment is multiline
> + * Prevent setting the format on the shared multiplexed bus.
> + */
> + if (format->pad == MAX9286_SRC_PAD)
> return -EINVAL;
>
> /* Refuse non YUV422 formats as we hardcode DT to 8 bit YUV422 */
> @@ -743,11 +746,17 @@ static int max9286_get_fmt(struct v4l2_subdev *sd,
> {
> struct max9286_priv *priv = sd_to_max9286(sd);
> struct v4l2_mbus_framefmt *cfg_fmt;
> + unsigned int pad = format->pad;
>
> - if (format->pad >= MAX9286_SRC_PAD)
> - return -EINVAL;
> + /* \todo: Multiplexed Stream Support
> + * Support link validation by returning the format of the first bound
> + * link. All links must have the same format, as we do not support
> + * mixing, and matching of cameras connected to the max9286.
> + */
> + if (format->pad == MAX9286_SRC_PAD)
You can use pad
> + pad = ffs(priv->bound_sources);
>
> - cfg_fmt = max9286_get_pad_format(priv, cfg, format->pad, format->which);
> + cfg_fmt = max9286_get_pad_format(priv, cfg, pad, format->which);
Or you could add one entry to struct max9286_priv.fmt for the source
pad format, set the format there when is set on one sink, and just
drop the check on the pad index in get_fmt. Up to you.
Please squash in v10
Thanks
j
> if (!cfg_fmt)
> return -EINVAL;
>
> --
> 2.25.1
>
next prev parent reply other threads:[~2020-05-19 7:52 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-12 15:51 [PATCH v9 0/4] MAX9286 GMSL Support (+RDACM20) Kieran Bingham
2020-05-12 15:51 ` [PATCH v9 1/4] dt-bindings: media: i2c: Add bindings for Maxim Integrated MAX9286 Kieran Bingham
2020-05-12 22:33 ` Rob Herring
2020-05-13 12:54 ` Jacopo Mondi
2020-05-14 9:43 ` [PATCH] fixup! dt-bindings: media: i2c: Add bindings for Maxima Integrated MAX9286 Kieran Bingham
2020-05-14 10:20 ` Jacopo Mondi
2020-05-12 22:36 ` [PATCH v9 1/4] dt-bindings: media: i2c: Add bindings for Maxim " Rob Herring
2020-05-13 12:28 ` Jacopo Mondi
2020-05-12 15:51 ` [PATCH v9 2/4] media: i2c: Add MAX9286 driver Kieran Bingham
2020-05-12 17:40 ` Manivannan Sadhasivam
2020-05-14 9:53 ` Kieran Bingham
2020-05-14 9:59 ` Manivannan Sadhasivam
2020-05-14 10:05 ` Kieran Bingham
2020-05-12 18:17 ` Manivannan Sadhasivam
2020-05-14 10:02 ` Kieran Bingham
2020-05-14 10:13 ` Manivannan Sadhasivam
2020-05-14 11:47 ` Kieran Bingham
2020-05-14 11:59 ` Geert Uytterhoeven
2020-05-14 12:48 ` Manivannan Sadhasivam
2020-05-14 13:50 ` Kieran Bingham
2020-05-14 11:47 ` Kieran Bingham
2020-05-14 12:27 ` Kieran Bingham
2020-05-14 12:54 ` Manivannan Sadhasivam
2020-05-16 21:51 ` Sakari Ailus
2020-05-18 11:45 ` Kieran Bingham
2020-05-18 12:38 ` Jacopo Mondi
2020-05-18 13:09 ` Kieran Bingham
2020-05-18 16:11 ` [PATCH] fixes! [max9286]: Validate link formats Kieran Bingham
2020-05-18 18:44 ` Kieran Bingham
2020-05-19 8:13 ` Sakari Ailus
2020-05-19 7:56 ` Jacopo Mondi [this message]
2020-05-19 9:00 ` Kieran Bingham
2020-05-19 8:10 ` [PATCH v9 2/4] media: i2c: Add MAX9286 driver Sakari Ailus
2020-05-19 8:55 ` Kieran Bingham
2020-05-19 9:03 ` Sakari Ailus
2020-05-20 0:50 ` Laurent Pinchart
2020-05-26 8:54 ` Sakari Ailus
2020-05-12 15:51 ` [PATCH v9 3/4] dt-bindings: media: i2c: Add bindings for IMI RDACM2x Kieran Bingham
2020-05-12 15:51 ` [PATCH v9 4/4] media: i2c: Add RDACM20 driver Kieran Bingham
2020-05-16 22:36 ` Sakari Ailus
2020-05-18 7:35 ` Jacopo Mondi
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