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 <ble...@chromium.org>
---
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.kroge...@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
