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Message-ID: <20240925162513.435177-1-abhishekpandit@chromium.org>
Date: Wed, 25 Sep 2024 09:25:01 -0700
From: Abhishek Pandit-Subedi <abhishekpandit@...omium.org>
To: heikki.krogerus@...ux.intel.com,
tzungbi@...nel.org
Cc: jthies@...gle.com,
pmalani@...omium.org,
akuchynski@...gle.com,
Abhishek Pandit-Subedi <abhishekpandit@...omium.org>,
Benson Leung <bleung@...omium.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Guenter Roeck <groeck@...omium.org>,
chrome-platform@...ts.linux.dev,
linux-kernel@...r.kernel.org,
linux-usb@...r.kernel.org
Subject: [PATCH 0/8] Thunderbolt and DP altmode support for cros-ec-typec
Hi Heikki, Tzung-Bi et al,
This patch series adds support for alternate mode entry for the
cros-ec-typec driver for Displayport and Thunderbolt.
Thunderbolt support is added by adapting an RFC Heikki had posted
previously:
https://lore.kernel.org/linux-usb/20191230152857.43917-1-heikki.krogerus@linux.intel.com/
A few comments on the series:
* The cros-ec interface will not accept any VDOs/VDMs so we simply
ignore any configurations we are passed (i.e. DPConfigure). This means
the sysfs control of DP lanes won't work.
* ChromeOS has two modes of operation for alt-modes: entirely EC driven
or AP-driven from userspace (via the typec daemon). Thus, we never
expect the kernel alt-mode drivers to auto-enter modes.
This was tested on kernel 6.6 with a ChromeOS Brya device and compile
tested against linux-usb (with allmodconfig).
Thanks,
Abhishek
Abhishek Pandit-Subedi (7):
usb: typec: altmode_match should handle TYPEC_ANY_MODE
usb: typec: intel_pmc_mux: Null check before use
usb: typec: Auto enter control for alternate modes
platform/chrome: cros_ec_typec: Update partner altmode active
platform/chrome: cros_ec_typec: Displayport support
platform/chrome: cros_ec_typec: Thunderbolt support
platform/chrome: cros_ec_typec: Disable auto_enter
Heikki Krogerus (1):
usb: typec: Add driver for Thunderbolt 3 Alternate Mode
Documentation/ABI/testing/sysfs-bus-typec | 9 +
MAINTAINERS | 5 +-
drivers/platform/chrome/Makefile | 3 +
drivers/platform/chrome/cros_ec_typec.c | 55 ++-
drivers/platform/chrome/cros_ec_typec.h | 1 +
drivers/platform/chrome/cros_typec_altmode.h | 48 +++
.../platform/chrome/cros_typec_displayport.c | 247 ++++++++++++++
.../platform/chrome/cros_typec_thunderbolt.c | 184 ++++++++++
drivers/usb/typec/altmodes/Kconfig | 9 +
drivers/usb/typec/altmodes/Makefile | 2 +
drivers/usb/typec/altmodes/displayport.c | 6 +-
drivers/usb/typec/altmodes/thunderbolt.c | 322 ++++++++++++++++++
drivers/usb/typec/class.c | 34 +-
drivers/usb/typec/mux/intel_pmc_mux.c | 9 +-
include/linux/usb/typec.h | 2 +
include/linux/usb/typec_altmode.h | 2 +
16 files changed, 918 insertions(+), 20 deletions(-)
create mode 100644 drivers/platform/chrome/cros_typec_altmode.h
create mode 100644 drivers/platform/chrome/cros_typec_displayport.c
create mode 100644 drivers/platform/chrome/cros_typec_thunderbolt.c
create mode 100644 drivers/usb/typec/altmodes/thunderbolt.c
--
2.46.0.792.g87dc391469-goog
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