linux-kernel - Re: [PATCH v5] media: ov8856: Configure sensor for GRBG Bayer for all modes

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <CAG3jFytO5N7u6URVVC_AHG9C9PAcFAX=8mv1SVRdi0SCoXz5Xw@mail.gmail.com>
Date:   Thu, 28 Jan 2021 15:25:54 +0100
From:   Robert Foss <robert.foss@...aro.org>
To:     Dongchun Zhu <dongchun.zhu@...iatek.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-media <linux-media@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Bingbu Cao <bingbu.cao@...ux.intel.com>,
        Andrey Konovalov <andrey.konovalov@...aro.org>
Cc:     Tomasz Figa <tfiga@...gle.com>
Subject: Re: [PATCH v5] media: ov8856: Configure sensor for GRBG Bayer for all modes

Ping. I think this patch is ready to be merged.

On Wed, 20 Jan 2021 at 13:09, Robert Foss <robert.foss@...aro.org> wrote:
>
> The previously added modes 3264x2448 & 1632x1224 are actually
> configuring the sensor for BGGR mode, this is an issue since
> the mode that is exposed through V4L incorrectly is set as GRBG.
>
> This patch fixes the issue by moving the output crop window of
> internal sensor ISP uses by one row, which means that the Bayer
> pattern of the output is changed.
>
> From:
> row 1: B G B G B G ...
> row 2: G R G R G R ...
> row 3: B G B G B G ...
> ...
>
> To:
> row 2: G R G R G R ...
> row 3: B G B G B G ...
> ...
>
> Signed-off-by: Robert Foss <robert.foss@...aro.org>
> Suggested-by: Andrey Konovalov <andrey.konovalov@...aro.org>
> Reviewed-by: Andrey Konovalov <andrey.konovalov@...aro.org>
> ---
>
> Changes since v1:
>  - Sakari: Added mode information to ov8856_mode struct
>  - Sakari: enum_mbus_code updated
>
> Changes since v2:
>  - Andrey: Switched approach to changing the sensor configuration
>    to yield identical Bayer modes for all modes
>
> Changes since v3:
>  - Andrey: Improve commit msg to explain Bayer shift better
>
> Changes since v4:
>  - Andrey: Fix typ-o
>  - Andrey: Add r-b
>
>
>  drivers/media/i2c/ov8856.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/i2c/ov8856.c b/drivers/media/i2c/ov8856.c
> index 2f4ceaa80593..8a355135c7db 100644
> --- a/drivers/media/i2c/ov8856.c
> +++ b/drivers/media/i2c/ov8856.c
> @@ -428,7 +428,7 @@ static const struct ov8856_reg mode_3264x2448_regs[] = {
>         {0x3810, 0x00},
>         {0x3811, 0x04},
>         {0x3812, 0x00},
> -       {0x3813, 0x02},
> +       {0x3813, 0x01},
>         {0x3814, 0x01},
>         {0x3815, 0x01},
>         {0x3816, 0x00},
> @@ -821,7 +821,7 @@ static const struct ov8856_reg mode_1632x1224_regs[] = {
>         {0x3810, 0x00},
>         {0x3811, 0x02},
>         {0x3812, 0x00},
> -       {0x3813, 0x02},
> +       {0x3813, 0x01},
>         {0x3814, 0x03},
>         {0x3815, 0x01},
>         {0x3816, 0x00},
> --
> 2.27.0
>