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There are three variants of which Huawei released the first two simultaneously. Huawei Matebook E Go LTE(sc8180x), codename seems to be gaokun2. Huawei Matebook E Go(sc8280xp@3.0GHz), codename must be gaokun3. (see [1]) Huawei Matebook E Go 2023(sc8280xp@2.69GHz), codename should be also gaokun3. Adding support for the latter two variants for now, this driver should also work for the sc8180x variant according to acpi table files, but I don't have the device to test yet. Different from other Qualcomm Snapdragon sc8280xp based machines, the Huawei Matebook E Go uses an embedded controller while others use a system called PMIC GLink. This embedded controller can be used to perform a set of various functions, including, but not limited to: - Battery and charger monitoring; - Charge control and smart charge; - Fn_lock settings; - Tablet lid status; - Temperature sensors; - USB Type-C notifications (ports orientation, DP alt mode HPD); - USB Type-C PD (according to observation, up to 48w). Add a driver for the EC which creates devices for UCSI and power supply devices. This driver is inspired by the following drivers: drivers/platform/arm64/acer-aspire1-ec.c drivers/platform/arm64/lenovo-yoga-c630.c drivers/platform/x86/huawei-wmi.c Also thanks for reviewers' working. They have made this patch improve a lot. [1] https://bugzilla.kernel.org/show_bug.cgi?id=219645 Signed-off-by: Pengyu Luo <mitltlatltl@gmail.com> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20250214180656.28599-3-mitltlatltl@gmail.com Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
74 lines
2.3 KiB
Plaintext
74 lines
2.3 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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#
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# EC-like Drivers for aarch64 based devices.
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#
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menuconfig ARM64_PLATFORM_DEVICES
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bool "ARM64 Platform-Specific Device Drivers"
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depends on ARM64 || COMPILE_TEST
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default y
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help
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Say Y here to get to see options for platform-specific device drivers
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for arm64 based devices, primarily EC-like device drivers.
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This option alone does not add any kernel code.
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If you say N, all options in this submenu will be skipped and disabled.
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if ARM64_PLATFORM_DEVICES
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config EC_ACER_ASPIRE1
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tristate "Acer Aspire 1 Embedded Controller driver"
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depends on ARCH_QCOM || COMPILE_TEST
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depends on I2C
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depends on DRM
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depends on POWER_SUPPLY
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depends on INPUT
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help
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Say Y here to enable the EC driver for the (Snapdragon-based)
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Acer Aspire 1 laptop. The EC handles battery and charging
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monitoring as well as some misc functions like the lid sensor
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and USB Type-C DP HPD events.
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This driver provides battery and AC status support for the mentioned
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laptop where this information is not properly exposed via the
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standard ACPI devices.
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config EC_HUAWEI_GAOKUN
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tristate "Huawei Matebook E Go Embedded Controller driver"
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depends on ARCH_QCOM || COMPILE_TEST
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depends on I2C
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depends on INPUT
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depends on HWMON
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select AUXILIARY_BUS
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help
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Say Y here to enable the EC driver for the Huawei Matebook E Go
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which is a sc8280xp-based 2-in-1 tablet. The driver handles battery
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(information, charge control) and USB Type-C DP HPD events as well
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as some misc functions like the lid sensor and temperature sensors,
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etc.
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This driver provides battery and AC status support for the mentioned
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laptop where this information is not properly exposed via the
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standard ACPI devices.
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Say M or Y here to include this support.
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config EC_LENOVO_YOGA_C630
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tristate "Lenovo Yoga C630 Embedded Controller driver"
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depends on ARCH_QCOM || COMPILE_TEST
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depends on I2C
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select AUXILIARY_BUS
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help
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Driver for the Embedded Controller in the Qualcomm Snapdragon-based
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Lenovo Yoga C630, which provides battery and power adapter
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information.
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This driver provides battery and AC status support for the mentioned
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laptop where this information is not properly exposed via the
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standard ACPI devices.
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Say M or Y here to include this support.
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endif # ARM64_PLATFORM_DEVICES
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