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From: Jacopo Mondi <jacopo+renesas@jmondi.org>
To: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Cc: Jacopo Mondi <jacopo+renesas@jmondi.org>,
	linux-media@vger.kernel.org, linux-renesas-soc@vger.kernel.org
Subject: [RFC 0/4] media: Introduce post_register() subdev operation
Date: Thu, 17 Jun 2021 19:16:07 +0200	[thread overview]
Message-ID: <20210617171611.80542-1-jacopo+renesas@jmondi.org> (raw)

Hello Hans,
   this is the result of the discussion we had yesterday, sent out just to
have a taste of how it looks like.

I won't pretend I like the outcome: it feels a bit hackish and meant to support
this precise use case.

Compared to the proposal to resurect 'init()' it indeed has the advantage that
the subdevice driver works in both deffered and non-deferred mode, but the
notifier flags seems really custom.

Also, being the new flag part of the notifier it won't be available for i2c
subdevs.

What do you think ? Does the result match your understanding ?

Thanks
  j

Jacopo Mondi (4):
  media: v4l2-subdev: Introduce post_register() core op
  media: v4l2-async: Add notifier flags
  media: v4l2-async: Call post_register() subdev op
  media: i2c: gmsl: Defer camera intialization

 drivers/media/i2c/max9286.c          | 21 ++++++--
 drivers/media/i2c/rdacm20.c          | 81 ++++++++++++++++------------
 drivers/media/v4l2-core/v4l2-async.c | 11 ++++
 include/media/v4l2-async.h           | 10 ++++
 include/media/v4l2-subdev.h          |  3 ++
 5 files changed, 89 insertions(+), 37 deletions(-)

--
2.31.1


             reply	other threads:[~2021-06-17 17:15 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-17 17:16 Jacopo Mondi [this message]
2021-06-17 17:16 ` [RFC 1/4] media: v4l2-subdev: Introduce post_register() core op Jacopo Mondi
2021-06-17 17:16 ` [RFC 2/4] media: v4l2-async: Add notifier flags Jacopo Mondi
2021-07-06  7:47   ` Hans Verkuil
2021-06-17 17:16 ` [RFC 3/4] media: v4l2-async: Call post_register() subdev op Jacopo Mondi
2021-06-17 17:16 ` [RFC 4/4] media: i2c: gmsl: Defer camera intialization Jacopo Mondi
2021-06-18 10:21 ` [RFC 0/4] media: Introduce post_register() subdev operation Hans Verkuil
2021-07-05 14:58   ` Jacopo Mondi

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