PMIC GLINK platforms handle the altmode support via OOB messages rather
than by fully following the UCSI standard. Currently altmode handling is
implemented in a separate driver, which has to duplicate significant
part of the USB-C stack to control USB-C muxes, switches and retimers.
Also this potentially introduces race conditions, since both UCSI and
pmic-glink-altmode will drive those components. Last but not least,
there is no connection betnween the altmode's aux-hpd-bridge and
corresponding typec_port instance.
Merge the pmic-glink-altmode driver into the ucsi-glink, streamling the
altmode support for Qualcomm platforms.
Depends: https://lore.kernel.org/linux-usb/20240411-ucsi-orient-aware-v2-0-d4b1cb22a33f@linaro.org/
Merge strategy: since the series involves both UCSI and soc/qcom
drivers, I'd kindly ask to ack merging the whole patchset through the
USB tree.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
Dmitry Baryshkov (8):
usb: typec: Handle retimers in typec_set_mode()
usb: typec: altmode: add low level altmode configuration helper
usb: typec: ucsi: glink: check message data sizes
usb: typec: ucsi: glink: use le32 for message data
usb: typec: ucsi: glink: simplify notification handling
usb: typec: ucsi: add ucsi_registered() callback
usb: typec: ucsi: glink: merge pmic_glink_altmode driver
soc: qcom: pmic-glink: drop separate altmode driver support
drivers/soc/qcom/Makefile | 1 -
drivers/soc/qcom/pmic_glink.c | 15 +-
drivers/soc/qcom/pmic_glink_altmode.c | 546 ------------------------------
drivers/usb/typec/bus.c | 34 ++
drivers/usb/typec/class.c | 9 +-
drivers/usb/typec/ucsi/ucsi.c | 3 +
drivers/usb/typec/ucsi/ucsi.h | 2 +
drivers/usb/typec/ucsi/ucsi_glink.c | 615 +++++++++++++++++++++++++++++++---
include/linux/usb/typec_altmode.h | 3 +
9 files changed, 619 insertions(+), 609 deletions(-)
---
base-commit: 7f3fd687151a552038967f31993f1bc7e447b99e
change-id: 20240408-ucsi-glink-altmode-293cdbf3270c
Best regards,
--
Dmitry Baryshkov <dmitry.baryshkov@linaro.org>