[PATCH 0/8] Thunderbolt and DP altmode support for cros-ec-typec
From: Abhishek Pandit-Subedi
Date: Wed Sep 25 2024 - 12:25:51 EST
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@xxxxxxxxxxxxxxx/
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
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