[PATCH 0/6] usb: typec: and platform/chrome: Add PD revision numbers

From: Benson Leung
Date: Fri Jan 29 2021 - 01:15:02 EST


USB Power Delivery has a 3 entity handshake (port, cable, partner), and as
of USB PD R3.0, each entity may independently support either Revision 2 or
Revision 3 signaling and protocol. In order for userspace and the kernel
to properly process the data objects received from a particular SOP*, we
must know to which revision of the spec each conforms.

This series adds individual version numbers for the partner and the cable,
and exposes them in the appropriate sysfs in /sys/class/typec.

I provide as a first implementation of this, platform/chrome's cros_ec_typec
driver, whose underlying status messages convey the SOP and SOP' revisions
already.

Thanks,
Benson

Benson Leung (6):
usb: typec: Standardize PD Revision format with Type-C Revision
usb: typec: Provide PD Specification Revision for cable and partner
usb: typec: Add typec_partner_set_pd_revision
platform/chrome: cros_ec_typec: Report SOP' PD revision from status
platform/chrome: cros_ec_typec: Set Partner PD revision from status
platform/chrome: cros_ec_typec: Set opmode to PD on SOP connected

Documentation/ABI/testing/sysfs-class-typec | 20 ++++++-
drivers/platform/chrome/cros_ec_typec.c | 26 +++++++--
drivers/usb/typec/class.c | 59 +++++++++++++++++++--
include/linux/usb/typec.h | 11 ++++
4 files changed, 108 insertions(+), 8 deletions(-)

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2.30.0.365.g02bc693789-goog