+Guenter
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@xxxxxxxxxx>
> ---
> 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@xxxxxxxxxxxxxxx>
> Description:
> Revision number of the supported USB Type-C specification.
>
> +What: /sys/class/typec/<port>/connector_orientation
> +Date: October 2019
> +Contact: Puma Hsu <pumahsu@xxxxxxxxxx>
> +Description:
> + Indicates which typec connector orientation is configured now.
> + cc1 is defined as "normal" and cc2 is defined as "reversed".
> +
> + Valid value:
> + - unknown (nothing configured)
"unknown" means we do not know the orientation.
> + - normal (configured in cc1 side)
> + - reversed (configured in cc2 side)
Guenter, do you think "connector_orientation" OK. I proposed it, but
I'm now wondering if something like "polarity" would be better?
> 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)
> +{
> + struct typec_port *p = to_typec_port(dev);
> +
> + return sprintf(buf, "%s\n",
> + typec_connector_orientation[p->orientation]);
> +}
> +static DEVICE_ATTR_RO(connector_orientation);
> +
> static struct attribute *typec_attrs[] = {
> &dev_attr_data_role.attr,
> &dev_attr_power_operation_mode.attr,
> @@ -1255,6 +1272,7 @@ static struct attribute *typec_attrs[] = {
> &dev_attr_usb_typec_revision.attr,
> &dev_attr_vconn_source.attr,
> &dev_attr_port_type.attr,
> + &dev_attr_connector_orientation.attr,
> NULL,
> };
> ATTRIBUTE_GROUPS(typec);
thanks,
--
heikki
