From: Jacopo Mondi <jacopo@jmondi.org>
To: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
Sakari Ailus <sakari.ailus@linux.intel.com>,
"open list:MEDIA INPUT INFRASTRUCTURE (V4L/DVB)"
<linux-media@vger.kernel.org>,
open list <linux-kernel@vger.kernel.org>
Subject: Re: [RFC 2/5] media: v4l2-ctrl: Document V4L2_CID_LOCATION
Date: Thu, 15 Aug 2019 16:34:23 +0200 [thread overview]
Message-ID: <20190815143423.vaoswb4jvzd2blxp@uno.localdomain> (raw)
In-Reply-To: <d60e4664-3a3f-1723-6c96-4fc822b6a7bb@xs4all.nl>
[-- Attachment #1: Type: text/plain, Size: 3219 bytes --]
Hi Hans,
On Thu, Aug 15, 2019 at 04:14:38PM +0200, Hans Verkuil wrote:
> On 8/15/19 4:10 PM, Hans Verkuil wrote:
> > On 8/15/19 12:43 AM, Laurent Pinchart wrote:
> >> Hi Jacopo,
> >>
> >> Thank you for the patch.
> >>
> >> On Wed, Aug 14, 2019 at 10:28:12PM +0200, Jacopo Mondi wrote:
> >>> Add documentation for the V4L2_CID_LOCATION camera control. The newly
> >>> added read-only control reports the camera device mounting position.
> >>>
> >>> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
> >>> ---
> >>> .../media/uapi/v4l/ext-ctrls-camera.rst | 23 +++++++++++++++++++
> >>> 1 file changed, 23 insertions(+)
> >>>
> >>> diff --git a/Documentation/media/uapi/v4l/ext-ctrls-camera.rst b/Documentation/media/uapi/v4l/ext-ctrls-camera.rst
> >>> index 51c1d5c9eb00..fc0a02eee6d4 100644
> >>> --- a/Documentation/media/uapi/v4l/ext-ctrls-camera.rst
> >>> +++ b/Documentation/media/uapi/v4l/ext-ctrls-camera.rst
> >>> @@ -510,6 +510,29 @@ enum v4l2_scene_mode -
> >>> value down. A value of zero stops the motion if one is in progress
> >>> and has no effect otherwise.
> >>>
> >>> +``V4L2_CID_LOCATION (integer)``
> >>
> >> Maybe V4L2_CID_CAMERA_SENSOR_LOCATION ? Same for the values below.
> >
> > Probably a better name, if a bit long. But we might need other location
> > controls in the future (e.g. flash location), so CID_LOCATION is just too
> > generic.
>
Thanks for the feedback.
> Note that the location defines themselves can most likely be used with any
> LOCATION control, so V4L2_LOCATION_FRONT would be fine with any control.
>
What do you think instead of the control type? Would a single integer
control do or an integer menu one would be better? I see merit in both
proposals actually...
Once this is clarified, I can send a proper v1.
Thanks
j
> Regards,
>
> Hans
>
> >
> > Regards,
> >
> > Hans
> >
> >>
> >>> + This read-only control describes the camera location by reporting its
> >>
> >> Here too I would mention camera sensor instead of just camera (or
> >> possibly imaging sensor).
> >>
> >>> + mounting position on the device where the camera is installed. This
> >>> + control is particularly meaningful for devices which have a well defined
> >>> + orientation, such as phones, laptops and portable devices as the camera
> >>> + location is expressed as a position relative to the device intended
> >>> + usage position. In example, a camera installed on the user-facing side
> >>> + of a phone device is said to be installed in the ``V4L2_LOCATION_FRONT``
> >>> + position.
> >>
> >> The DT bindings could use such an example :-) I would extend this to
> >> tablets and laptops.
> >>
> >>> +
> >>> +
> >>> +
> >>
> >> Do we need three blank lines ?
> >>
> >>> +.. flat-table::
> >>> + :header-rows: 0
> >>> + :stub-columns: 0
> >>> +
> >>> + * - ``V4L2_LOCATION_FRONT``
> >>> + - The camera device is located on the front side of the device.
> >>> + * - ``V4L2_LOCATION_BACK``
> >>> + - The camera device is located on the back side of the device.
> >>> +
> >>> +
> >>> +
> >>> .. [#f1]
> >>> This control may be changed to a menu control in the future, if more
> >>> options are required.
> >>
> >
>
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 833 bytes --]
next prev parent reply other threads:[~2019-08-15 14:33 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-14 20:28 [RFC 0/5] media: v4l2-ctrls: Add camera 'location' support Jacopo Mondi
2019-08-14 20:28 ` [RFC 1/5] media: dt-bindings: Document 'location' property Jacopo Mondi
2019-08-14 22:40 ` Laurent Pinchart
2019-08-15 6:56 ` Sakari Ailus
2019-08-15 12:55 ` Laurent Pinchart
2019-08-15 12:55 ` Jacopo Mondi
2019-08-15 12:58 ` Laurent Pinchart
2019-09-01 17:24 ` Pavel Machek
2019-09-02 8:02 ` Laurent Pinchart
2019-09-02 8:11 ` Pavel Machek
2019-08-14 20:28 ` [RFC 2/5] media: v4l2-ctrl: Document V4L2_CID_LOCATION Jacopo Mondi
2019-08-14 22:43 ` Laurent Pinchart
2019-08-15 12:58 ` Jacopo Mondi
2019-08-15 14:10 ` Hans Verkuil
2019-08-15 14:14 ` Hans Verkuil
2019-08-15 14:34 ` Jacopo Mondi [this message]
2019-08-15 14:40 ` Hans Verkuil
2019-08-15 15:12 ` Sakari Ailus
2019-09-01 17:24 ` Pavel Machek
2019-09-02 8:00 ` Laurent Pinchart
2019-09-02 8:06 ` Pavel Machek
2019-09-02 8:19 ` Laurent Pinchart
2019-09-02 8:27 ` Pavel Machek
2019-09-02 8:53 ` Laurent Pinchart
2019-09-02 9:41 ` Jacopo Mondi
2019-08-15 7:00 ` Sakari Ailus
2019-08-15 12:59 ` Laurent Pinchart
2019-08-15 13:08 ` Sakari Ailus
2019-08-15 13:10 ` Laurent Pinchart
2019-08-15 13:15 ` Sakari Ailus
2019-08-15 13:19 ` Laurent Pinchart
2019-08-15 13:30 ` Hans Verkuil
2019-08-15 13:48 ` Laurent Pinchart
2019-08-15 14:02 ` Jacopo Mondi
2019-08-14 20:28 ` [RFC 3/5] media: v4l2-ctrls: Add support for V4L2_CID_LOCATION Jacopo Mondi
2019-08-14 22:53 ` Laurent Pinchart
2019-08-15 13:02 ` Jacopo Mondi
2019-08-15 13:03 ` Laurent Pinchart
2019-08-15 13:41 ` Hans Verkuil
2019-08-15 13:50 ` Jacopo Mondi
2019-08-15 14:12 ` Hans Verkuil
2019-08-15 13:23 ` Hans Verkuil
2019-08-15 13:50 ` Jacopo Mondi
2019-08-14 20:28 ` [RFC 4/5] media: i2c: ov5670: Report the camera location Jacopo Mondi
2019-08-14 23:03 ` Laurent Pinchart
2019-08-15 7:04 ` Sakari Ailus
2019-08-14 20:28 ` [RFC 5/5] media: i2c: ov13858: " Jacopo Mondi
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20190815143423.vaoswb4jvzd2blxp@uno.localdomain \
--to=jacopo@jmondi.org \
--cc=hverkuil-cisco@xs4all.nl \
--cc=laurent.pinchart@ideasonboard.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-media@vger.kernel.org \
--cc=mchehab@kernel.org \
--cc=sakari.ailus@linux.intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).