linux-i3c.lists.infradead.org archive mirror
 help / color / mirror / Atom feed
From: Boris Brezillon <boris.brezillon@collabora.com>
To: Vitor Soares <Vitor.Soares@synopsys.com>
Cc: Jose.Abreu@synopsys.com, Joao.Pinto@synopsys.com, arnd@arndb.de,
	bbrezillon@kernel.org, gregkh@linuxfoundation.org,
	wsa@the-dreams.de, linux-kernel@vger.kernel.org,
	broonie@kernel.org, linux-i3c@lists.infradead.org
Subject: Re: [RFC v2 0/4] Introduce i3c device userspace interface
Date: Mon, 17 Feb 2020 18:37:47 +0100	[thread overview]
Message-ID: <20200217183747.6a18d6c4@collabora.com> (raw)
In-Reply-To: <20200217155141.08e87b3f@collabora.com>

On Mon, 17 Feb 2020 15:51:41 +0100
Boris Brezillon <boris.brezillon@collabora.com> wrote:

> Hello Vitor,
> 
> Sorry for taking so long to reply, and thanks for working on that topic.
> 
> On Wed, 29 Jan 2020 13:17:31 +0100
> Vitor Soares <Vitor.Soares@synopsys.com> wrote:
> 
> > For today there is no way to use i3c devices from user space and
> > the introduction of such API will help developers during the i3c device
> > or i3c host controllers development.
> > 
> > The i3cdev module is highly based on i2c-dev and yet I tried to address
> > the concerns raised in [1].
> > 
> > NOTES:
> > - The i3cdev dynamically request an unused major number.
> > 
> > - The i3c devices are dynamically exposed/removed from dev/ folder based
> >   on if they have a device driver bound to it.  
> 
> May I ask why you need to automatically bind devices to the i3cdev
> driver when they don't have a driver matching the device id
> loaded/compiled-in? If we get the i3c subsystem to generate proper
> uevents we should be able to load the i3cdev module and bind the device
> to this driver using a udev rule.

Hm, looks like we already send a proper MODALIAS [1], so we can actually
implement this auto-bind to i3cdev in udev (fall back on i3cdev
load+bind if no matching module is found).

[1]https://elixir.bootlin.com/linux/latest/source/drivers/i3c/master.c#L269

_______________________________________________
linux-i3c mailing list
linux-i3c@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-i3c

      parent reply	other threads:[~2020-02-17 17:37 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-29 12:17 [RFC v2 0/4] Introduce i3c device userspace interface Vitor Soares
2020-01-29 12:17 ` [RFC v2 1/4] i3c: master: export i3c_masterdev_type Vitor Soares
2020-02-17 14:56   ` Boris Brezillon
2020-02-17 14:59     ` Boris Brezillon
2020-01-29 12:17 ` [RFC v2 2/4] i3c: master: export i3c_bus_type symbol Vitor Soares
2020-01-29 12:17 ` [RFC v2 3/4] i3c: master: add i3c_for_each_dev helper Vitor Soares
2020-01-29 12:17 ` [RFC v2 4/4] i3c: add i3cdev module to expose i3c dev in /dev Vitor Soares
2020-01-29 14:30   ` Arnd Bergmann
2020-01-29 17:00     ` Vitor Soares
2020-01-29 19:39       ` Arnd Bergmann
2020-02-04 13:19         ` Vitor Soares
2020-02-17 15:26   ` Boris Brezillon
2020-02-17 14:51 ` [RFC v2 0/4] Introduce i3c device userspace interface Boris Brezillon
2020-02-17 15:06   ` Arnd Bergmann
2020-02-17 15:36     ` Boris Brezillon
2020-02-17 15:55       ` Vitor Soares
2020-02-17 16:03         ` gregkh
2020-02-17 16:12           ` Vitor Soares
2020-02-17 16:23         ` Boris Brezillon
2020-02-17 16:31           ` Arnd Bergmann
2020-02-17 17:06             ` Boris Brezillon
2020-02-17 16:19       ` Arnd Bergmann
2020-02-17 16:34         ` Boris Brezillon
2020-02-17 15:32   ` Vitor Soares
2020-02-17 15:52     ` Boris Brezillon
2020-02-17 17:37   ` Boris Brezillon [this message]

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=20200217183747.6a18d6c4@collabora.com \
    --to=boris.brezillon@collabora.com \
    --cc=Joao.Pinto@synopsys.com \
    --cc=Jose.Abreu@synopsys.com \
    --cc=Vitor.Soares@synopsys.com \
    --cc=arnd@arndb.de \
    --cc=bbrezillon@kernel.org \
    --cc=broonie@kernel.org \
    --cc=gregkh@linuxfoundation.org \
    --cc=linux-i3c@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=wsa@the-dreams.de \
    /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).