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Mon, 15 Apr 2024 19:20:53 -0700 (PDT) Received: from umbar.lan ([192.130.178.91]) by smtp.gmail.com with ESMTPSA id bi30-20020a0565120e9e00b0051925dd92dbsm27716lfb.214.2024.04.15.19.20.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 15 Apr 2024 19:20:53 -0700 (PDT) From: Dmitry Baryshkov Subject: [PATCH 0/8] usb: typec: ucsi: glink: merge in altmode support Date: Tue, 16 Apr 2024 05:20:49 +0300 Message-Id: <20240416-ucsi-glink-altmode-v1-0-890db00877ac@linaro.org> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-B4-Tracking: v=1; b=H4sIAIHgHWYC/x3MTQqAIBBA4avErBswE/q5SrQwHWuoLLQiiO6et PwW7z0QKTBFaLMHAl0cefMJRZ6BmbQfCdkmgxRSCSVqPE1kHBf2M+rlWDdLKJvS2MGVshIGUrg Hcnz/065/3w/lmAepZAAAAA== To: Heikki Krogerus , Greg Kroah-Hartman , Neil Armstrong , Bjorn Andersson , Konrad Dybcio Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Dmitry Baryshkov X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2221; i=dmitry.baryshkov@linaro.org; h=from:subject:message-id; bh=I6m2M+8GekB9Ra+iG3eKclLpfI1M2HDrEBoYGhILldA=; b=owEBbQGS/pANAwAKAYs8ij4CKSjVAcsmYgBmHeCDxYYHr6DhuHF5Rx3H3UF3NZQ+UU0xJXKpG Djr2ZkkgkyJATMEAAEKAB0WIQRMcISVXLJjVvC4lX+LPIo+Aiko1QUCZh3ggwAKCRCLPIo+Aiko 1cFvCACGUL3X5X657gbpGTVoM+fio/lBRG69Mp83UZWFjhSsTHLhtxOJ+1Pqt7GTpOVV9O0zMWX tXvrDXLDMuXJeA2bKmjfvqGLy0ye5PJttVLMeZJxrw6ynFo7rGrwfwGHlpunB4MIQk8UztvztrX H6TAuPebI9j6kGlYeXGrMcdGImjUi1HGDBExqy7vIAJpz2ntPKRd3zKvhcugQ7Tg1zX42bi8YX9 JKGws/XC1UW8lznI877kckpaK/XIT71um7Hl5V+wLAsbZH85XEJF8wofi4fXdqXjae+otr3EuM8 4q5EEIiPvt5qFPX9NbNoN+IHUzfvZYqcTXuhqwnUM5tbCugF X-Developer-Key: i=dmitry.baryshkov@linaro.org; a=openpgp; fpr=8F88381DD5C873E4AE487DA5199BF1243632046A 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 (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,