linux-kernel - Re: [PATCH V2] usb: typec: Add sysfs node to show connector orientation

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Date:   Tue, 22 Oct 2019 13:27:31 -0400
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Puma Hsu <pumahsu@...gle.com>
Cc:     heikki.krogerus@...ux.intel.com, badhri@...gle.com,
        kyletso@...gle.com, albertccwang@...gle.com, rickyniu@...gle.com,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH V2] usb: typec: Add sysfs node to show connector
 orientation

On Tue, Oct 22, 2019 at 04:59:24PM +0800, Puma Hsu wrote:
> Export the Type-C connector orientation so that user space
> can get this information.
> 
> Signed-off-by: Puma Hsu <pumahsu@...gle.com>
> ---
>  Documentation/ABI/testing/sysfs-class-typec | 11 +++++++++++
>  drivers/usb/typec/class.c                   | 18 ++++++++++++++++++
>  2 files changed, 29 insertions(+)
> 
> diff --git a/Documentation/ABI/testing/sysfs-class-typec b/Documentation/ABI/testing/sysfs-class-typec
> index d7647b258c3c..b22f71801671 100644
> --- a/Documentation/ABI/testing/sysfs-class-typec
> +++ b/Documentation/ABI/testing/sysfs-class-typec
> @@ -108,6 +108,17 @@ Contact:	Heikki Krogerus <heikki.krogerus@...ux.intel.com>
>  Description:
>  		Revision number of the supported USB Type-C specification.
>  
> +What:		/sys/class/typec/<port>/connector_orientation
> +Date:		October 2019
> +Contact:	Puma Hsu <pumahsu@...gle.com>
> +Description:
> +		Indicates which typec connector orientation is configured now.
> +		cc1 is defined as "normal" and cc2 is defined as "reversed".

Why the blank line after "Description:"?  Shouldn't "Indicates..." be
right after it?
> +
> +		Valid value:
> +		- unknown (nothing configured)
> +		- normal (configured in cc1 side)
> +		- reversed (configured in cc2 side)
>  
>  USB Type-C partner devices (eg. /sys/class/typec/port0-partner/)
>  
> diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c
> index 94a3eda62add..911d06676aeb 100644
> --- a/drivers/usb/typec/class.c
> +++ b/drivers/usb/typec/class.c
> @@ -1245,6 +1245,23 @@ static ssize_t usb_power_delivery_revision_show(struct device *dev,
>  }
>  static DEVICE_ATTR_RO(usb_power_delivery_revision);
>  
> +static const char * const typec_connector_orientation[] = {
> +	[TYPEC_ORIENTATION_NONE]		= "unknown",
> +	[TYPEC_ORIENTATION_NORMAL]		= "normal",
> +	[TYPEC_ORIENTATION_REVERSE]		= "reversed",
> +};
> +
> +static ssize_t connector_orientation_show(struct device *dev,
> +						struct device_attribute *attr,
> +						char *buf)

Can you line this up properly?

thanks,

greg k-h