| Message ID | 20210129061406.2680146-2-bleung@chromium.org |
|---|---|
| State | New |
| Headers | show |
| Series | usb: typec: and platform/chrome: Add PD revision numbers | expand |
On Thu, Jan 28, 2021 at 10:14:01PM -0800, Benson Leung wrote: > The Type-C Revision was in a specific BCD format "0120H" for 1.2. > USB PD revision numbers follow a similar pattern with "0300H" for 3.0. > > Standardizes the sysfs format for usb_power_delivery_revision > to align with the BCD format used for usb_typec_revision. > > Example values: > - "2.0": USB Power Delivery Release 2.0 > - "3.0": USB Power Delivery Release 3.0 > - "3.1": USB Power Delivery Release 3.1 > > Signed-off-by: Benson Leung <bleung@chromium.org> I guess it's OK to modify the ABI like this. Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> > --- > Documentation/ABI/testing/sysfs-class-typec | 7 ++++++- > drivers/usb/typec/class.c | 3 ++- > 2 files changed, 8 insertions(+), 2 deletions(-) > > diff --git a/Documentation/ABI/testing/sysfs-class-typec b/Documentation/ABI/testing/sysfs-class-typec > index 8eab41e79ce6..b61480535fdc 100644 > --- a/Documentation/ABI/testing/sysfs-class-typec > +++ b/Documentation/ABI/testing/sysfs-class-typec > @@ -105,7 +105,12 @@ Date: April 2017 > Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> > Description: > Revision number of the supported USB Power Delivery > - specification, or 0 when USB Power Delivery is not supported. > + specification, or 0.0 when USB Power Delivery is not supported. > + > + Example values: > + - "2.0": USB Power Delivery Release 2.0 > + - "3.0": USB Power Delivery Release 3.0 > + - "3.1": USB Power Delivery Release 3.1 > > What: /sys/class/typec/<port>/usb_typec_revision > Date: April 2017 > diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c > index 8f77669f9cf4..4f60ee7ba76a 100644 > --- a/drivers/usb/typec/class.c > +++ b/drivers/usb/typec/class.c > @@ -1500,8 +1500,9 @@ static ssize_t usb_power_delivery_revision_show(struct device *dev, > char *buf) > { > struct typec_port *p = to_typec_port(dev); > + u16 rev = p->cap->pd_revision; > > - return sprintf(buf, "%d\n", (p->cap->pd_revision >> 8) & 0xff); > + return sprintf(buf, "%d.%d\n", (rev >> 8) & 0xff, (rev >> 4) & 0xf); > } > static DEVICE_ATTR_RO(usb_power_delivery_revision); > > -- > 2.30.0.365.g02bc693789-goog thanks, -- heikki
diff --git a/Documentation/ABI/testing/sysfs-class-typec b/Documentation/ABI/testing/sysfs-class-typec index 8eab41e79ce6..b61480535fdc 100644 --- a/Documentation/ABI/testing/sysfs-class-typec +++ b/Documentation/ABI/testing/sysfs-class-typec @@ -105,7 +105,12 @@ Date: April 2017 Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> Description: Revision number of the supported USB Power Delivery - specification, or 0 when USB Power Delivery is not supported. + specification, or 0.0 when USB Power Delivery is not supported. + + Example values: + - "2.0": USB Power Delivery Release 2.0 + - "3.0": USB Power Delivery Release 3.0 + - "3.1": USB Power Delivery Release 3.1 What: /sys/class/typec/<port>/usb_typec_revision Date: April 2017 diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c index 8f77669f9cf4..4f60ee7ba76a 100644 --- a/drivers/usb/typec/class.c +++ b/drivers/usb/typec/class.c @@ -1500,8 +1500,9 @@ static ssize_t usb_power_delivery_revision_show(struct device *dev, char *buf) { struct typec_port *p = to_typec_port(dev); + u16 rev = p->cap->pd_revision; - return sprintf(buf, "%d\n", (p->cap->pd_revision >> 8) & 0xff); + return sprintf(buf, "%d.%d\n", (rev >> 8) & 0xff, (rev >> 4) & 0xf); } static DEVICE_ATTR_RO(usb_power_delivery_revision);
The Type-C Revision was in a specific BCD format "0120H" for 1.2. USB PD revision numbers follow a similar pattern with "0300H" for 3.0. Standardizes the sysfs format for usb_power_delivery_revision to align with the BCD format used for usb_typec_revision. Example values: - "2.0": USB Power Delivery Release 2.0 - "3.0": USB Power Delivery Release 3.0 - "3.1": USB Power Delivery Release 3.1 Signed-off-by: Benson Leung <bleung@chromium.org> --- Documentation/ABI/testing/sysfs-class-typec | 7 ++++++- drivers/usb/typec/class.c | 3 ++- 2 files changed, 8 insertions(+), 2 deletions(-)