This adds binding, drivers and the DT support for the Huawei Matebook E Go (sc8280xp-based) Embedded Controller which is also found in Huawei Matebook E Go LTE (sc8180x-based), but I don't have the sc8180x one to perform tests, so this series enable support for sc8280xp variant only, this series provides the following features: - battery and charger information report - charging thresholds control - FN lock (An alternative method) - LID switch detection - Temperature sensors - USB Type-C altmode - USB Type-C PD(high power) Thanks to the work of Bjorn and Dmitry([1]), the work of Nikita([2]), writing a EC driver won't be suffering. This work refers a lot to their work, also, many other works. I mentioned them in commit messages. Depends: https://lore.kernel.org/linux-arm-msm/20241220160530.444864-1-mitltlatltl@xxxxxxxxx [1] https://lore.kernel.org/all/20240614-yoga-ec-driver-v7-0-9f0b9b40ae76@xxxxxxxxxx/ [2] https://lore.kernel.org/all/20240315-aspire1-ec-v5-0-f93381deff39@xxxxxxx/ base-commit: 0907e7fb35756464aa34c35d6abb02998418164b Signed-off-by: Pengyu Luo <mitltlatltl@xxxxxxxxx> --- Changes in v5: - handle return code of i2c_transfer() (Bryan) - rename threshold validatition function (Bryan) - add enumerates and defines for registers (Bryan) - drop extra line in header (Heikki) - Link to v4: https://lore.kernel.org/linux-arm-msm/20250116111559.83641-1-mitltlatltl@xxxxxxxxx Changes in v4: - use new API to register hwmon device instead of the deprecated one. (Guenter) - add Reviewed-by tag for dt-binding (Krzysztof) - drop unnecessary header (Ilpo) - use guard mutex (Ilpo) - improve comments and naming (Ilpo) - add a shallow copy version of extr_resp() (Ilpo) - add functions to handle resp and req whose size is 1 - drop PSY and UCSI subdrivers, commit them once the base driver is upstreamed - Link to v3: https://lore.kernel.org/linux-arm-msm/20250113175049.590511-1-mitltlatltl@xxxxxxxxx Changes in v3: - Link to v2: https://lore.kernel.org/linux-arm-msm/20250105174159.227831-1-mitltlatltl@xxxxxxxxx dt-binding: - drop generic compatibles. (Krzysztof) - remove '+' to use literal block style. (Krzysztof) ec: - take struct gaokun_ucsi_reg as parameter (Heikki) - add almost all kernel doc comments (Krzysztof, Heikki) ucsi: - drop unnecessary ucsi quirks (Dmitry) - add UCSI v1.0 to ucsi.h (Heikki) - use gaokun_ucsi_read_cci() to read cci directly (Heikki) - drop unnecessary gaokun_ucsi_get_port_num (Heikki) - rename member port_num => num_ports (Heikki) - fix completion, forgot to signal threads in previous version dt: - fix indentation (Konrad) - add a link between role switch and connector Changes in v2: - Link to v1: https://lore.kernel.org/linux-arm-msm/20241227171353.404432-1-mitltlatltl@xxxxxxxxx global: - drop qcom's products(i.e. sc8180x, sx8280xp) everywhere, use 'product'-based instead(Krzysztof, Bryan) - drop Cc Nikita Travkin, we had discussed the device in PM. - add myself to MAINTAINERS dt-binding: - fix building (Rob Herring (Arm)) - remove unnecessary code (Krzysztof) - add bugzilla documentation, insights of gaokun(see [1] or patch[1/5]) (Krzysztof, Aiqun(Maria)) - explain the difference between PMIC GLink and gaokun EC (Aiqun(Maria)) ec: - use Linux style comments (Krzysztof) - add a comment for mutex lock (Krzysztof) - add more kerneldoc for exported functions (Krzysztof) - eliminate unnecessary conditions (Bryan) - add a macro for check thresholds (Bryan) - improve English (Bryan) - use existing sysfs interface(hwmon, psy) whenever possible (Krzysztof) - use __le16 and related endianess conversion function for temp data (Ilpo) - drop alias for packet headers (Ilpo) - avoid hardcoding i2c msgs size (Aiqun(Maria)) - add a comment for the sleep in critial region (Bryan, Aiqun(Maria)) - use macro to construct packet (Bryan, Aiqun(Maria)) wmi: - dropped ucsi: - reorder headers (Bryan) - a comment for the orientation map macro (Bryan) - make mux mode map more explicit(minus six is very clear now) (Bryan, Dmitry) - handle port update exceptions return (Bryan) - a comment for the UCSI quirks (Dmitry) - use the inline hint for the short register function (Dmitry) - use the API with delay to handle register instead of a direct sleep (Bryan) - handle unfinished initialization early psy: - add charging related sysfs to here (Krzysztof, Dmitry) - document ABI for power_supply sysfs (Krzysztof) - drop charging threshold, use smart charging instead dts: - correct indentation, properties' order. (Konrad) Pengyu Luo (3): dt-bindings: platform: Add Huawei Matebook E Go EC platform: arm64: add Huawei Matebook E Go EC driver arm64: dts: qcom: gaokun3: Add Embedded Controller node .../bindings/platform/huawei,gaokun-ec.yaml | 124 +++ MAINTAINERS | 7 + .../boot/dts/qcom/sc8280xp-huawei-gaokun3.dts | 163 ++++ drivers/platform/arm64/Kconfig | 21 + drivers/platform/arm64/Makefile | 1 + drivers/platform/arm64/huawei-gaokun-ec.c | 822 ++++++++++++++++++ .../linux/platform_data/huawei-gaokun-ec.h | 79 ++ 7 files changed, 1217 insertions(+) create mode 100644 Documentation/devicetree/bindings/platform/huawei,gaokun-ec.yaml create mode 100644 drivers/platform/arm64/huawei-gaokun-ec.c create mode 100644 include/linux/platform_data/huawei-gaokun-ec.h -- 2.48.1
