| From: |
| Andrei Kuchynski <akuchynski-AT-chromium.org> |
| To: |
| Heikki Krogerus <heikki.krogerus-AT-linux.intel.com>, Abhishek Pandit-Subedi <abhishekpandit-AT-chromium.org>, Benson Leung <bleung-AT-chromium.org>, Jameson Thies <jthies-AT-google.com>, Tzung-Bi Shih <tzungbi-AT-kernel.org>, linux-usb-AT-vger.kernel.org, chrome-platform-AT-lists.linux.dev |
| Subject: |
| [PATCH v5 0/4] USB Type-C alternate mode priorities |
| Date: |
| Mon, 24 Nov 2025 12:46:35 +0000 |
| Message-ID: |
| <20251124124639.1101335-1-akuchynski@chromium.org> |
| Cc: |
| Guenter Roeck <groeck-AT-chromium.org>, Greg Kroah-Hartman <gregkh-AT-linuxfoundation.org>, Dmitry Baryshkov <dmitry.baryshkov-AT-oss.qualcomm.com>, "Christian A. Ehrhardt" <lk-AT-c--e.de>, Abel Vesa <abel.vesa-AT-linaro.org>, Pooja Katiyar <pooja.katiyar-AT-intel.com>, Venkat Jayaraman <venkat.jayaraman-AT-intel.com>, linux-kernel-AT-vger.kernel.org, Andrei Kuchynski <akuchynski-AT-chromium.org> |
| Archive-link: |
| Article |
This patch series introduces a mechanism for setting USB Type-C alternate
mode priorities. It allows the user to specify their preferred order for
mode selection, such as USB4, Thunderbolt, or DisplayPort.
A new sysfs attribute named 'priority' is exposed to provide user-space
control over the mode selection process.
This series was tested on a Android OS device running kernel 6.18.0-rc6.
Changes in v5:
- Patches 3 and 4 (v4) have been consolidated into a singular patch,
keeping the mode priority implementation within drivers/usb/typec/class.c.
Andrei Kuchynski (4):
usb: typec: Add mode_control field to port property
platform/chrome: cros_ec_typec: Set no_mode_control flag
usb: typec: ucsi: Set no_mode_control flag
usb: typec: Expose alternate mode priority via sysfs
Documentation/ABI/testing/sysfs-class-typec | 11 +++
drivers/platform/chrome/cros_ec_typec.c | 1 +
drivers/usb/typec/class.c | 99 ++++++++++++++++++++-
drivers/usb/typec/class.h | 1 +
drivers/usb/typec/ucsi/ucsi.c | 1 +
include/linux/usb/typec.h | 2 +
include/linux/usb/typec_altmode.h | 1 +
7 files changed, 112 insertions(+), 4 deletions(-)
--
2.52.0.rc2.455.g230fcf2819-goog
