Linux-i3c Archive on lore.kernel.org
 help / color / Atom feed
From: Boris Brezillon <boris.brezillon@collabora.com>
To: Vitor Soares <Vitor.Soares@synopsys.com>
Cc: linux-kernel@vger.kernel.org, pgaj@cadence.com,
	linux-i3c@lists.infradead.org, bbrezillon@kernel.org
Subject: Re: [PATCH v2 2/4] i3c: Add modalias sysfs attribute
Date: Thu, 27 Feb 2020 15:41:15 +0100
Message-ID: <20200227154115.77c42274@collabora.com> (raw)
In-Reply-To: <a90f64f830128cd12762153de7828b775574c156.1582796652.git.vitor.soares@synopsys.com>

On Thu, 27 Feb 2020 12:31:07 +0100
Vitor Soares <Vitor.Soares@synopsys.com> wrote:

> Create modalias sysfs attribute for modalias devices.

					^i3c

No need to send a new version, I'll fix it when applying.

> 
> Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
> Signed-off-by: Vitor Soares <vitor.soares@synopsys.com>
> ---
>  drivers/i3c/master.c | 22 ++++++++++++++++++++++
>  1 file changed, 22 insertions(+)
> 
> diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c
> index b6db828..925e1ed 100644
> --- a/drivers/i3c/master.c
> +++ b/drivers/i3c/master.c
> @@ -241,12 +241,34 @@ static ssize_t hdrcap_show(struct device *dev,
>  }
>  static DEVICE_ATTR_RO(hdrcap);
>  
> +static ssize_t modalias_show(struct device *dev,
> +			     struct device_attribute *da, char *buf)
> +{
> +	struct i3c_device *i3c = dev_to_i3cdev(dev);
> +	struct i3c_device_info devinfo;
> +	u16 manuf, part, ext;
> +
> +	i3c_device_get_info(i3c, &devinfo);
> +	manuf = I3C_PID_MANUF_ID(devinfo.pid);
> +	part = I3C_PID_PART_ID(devinfo.pid);
> +	ext = I3C_PID_EXTRA_INFO(devinfo.pid);
> +
> +	if (I3C_PID_RND_LOWER_32BITS(devinfo.pid))
> +		return sprintf(buf, "i3c:dcr%02Xmanuf%04X", devinfo.dcr,
> +			       manuf);
> +
> +	return sprintf(buf, "i3c:dcr%02Xmanuf%04Xpart%04Xext%04X",
> +		       devinfo.dcr, manuf, part, ext);
> +}
> +static DEVICE_ATTR_RO(modalias);
> +
>  static struct attribute *i3c_device_attrs[] = {
>  	&dev_attr_bcr.attr,
>  	&dev_attr_dcr.attr,
>  	&dev_attr_pid.attr,
>  	&dev_attr_dynamic_address.attr,
>  	&dev_attr_hdrcap.attr,
> +	&dev_attr_modalias.attr,
>  	NULL,
>  };
>  ATTRIBUTE_GROUPS(i3c_device);


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

  reply index

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-27 11:31 [PATCH v2 0/4] i3c: Address i3c_device_id related issues Vitor Soares
2020-02-27 11:31 ` [PATCH v2 1/4] i3c: Fix MODALIAS uevents Vitor Soares
2020-02-27 11:31 ` [PATCH v2 2/4] i3c: Add modalias sysfs attribute Vitor Soares
2020-02-27 14:41   ` Boris Brezillon [this message]
2020-02-27 11:31 ` [PATCH v2 3/4] i3c: Generate aliases for i3c modules Vitor Soares
2020-02-27 11:31 ` [PATCH v2 4/4] i3c: Simplify i3c_device_match_id() Vitor Soares

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=20200227154115.77c42274@collabora.com \
    --to=boris.brezillon@collabora.com \
    --cc=Vitor.Soares@synopsys.com \
    --cc=bbrezillon@kernel.org \
    --cc=linux-i3c@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=pgaj@cadence.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

Linux-i3c Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-i3c/0 linux-i3c/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-i3c linux-i3c/ https://lore.kernel.org/linux-i3c \
		linux-i3c@lists.infradead.org
	public-inbox-index linux-i3c

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.infradead.lists.linux-i3c


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git