linux-kernel - [PATCH 0/8] usb: typec: ucsi: glink: merge in altmode support

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Message-Id: <20240416-ucsi-glink-altmode-v1-0-890db00877ac@linaro.org>
Date: Tue, 16 Apr 2024 05:20:49 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Heikki Krogerus <heikki.krogerus@...ux.intel.com>, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 Neil Armstrong <neil.armstrong@...aro.org>, 
 Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konrad.dybcio@...aro.org>
Cc: linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-arm-msm@...r.kernel.org, 
 Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Subject: [PATCH 0/8] usb: typec: ucsi: glink: merge in altmode support

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@...aro.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@...aro.org>