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/usr/src/linux-headers-5.15.0-190/drivers/platform/chrome/Kconfig
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# SPDX-License-Identifier: GPL-2.0-only # # Platform support for Chrome OS hardware (Chromebooks and Chromeboxes) # menuconfig CHROME_PLATFORMS bool "Platform support for Chrome hardware" depends on X86 || ARM || ARM64 || COMPILE_TEST help Say Y here to get to see options for platform support for various Chromebooks and Chromeboxes. This option alone does not add any kernel code. If you say N, all options in this submenu will be skipped and disabled. if CHROME_PLATFORMS config CHROMEOS_LAPTOP tristate "Chrome OS Laptop" depends on I2C && DMI && X86 help This driver instantiates i2c and smbus devices such as light sensors and touchpads. If you have a supported Chromebook, choose Y or M here. The module will be called chromeos_laptop. config CHROMEOS_PSTORE tristate "Chrome OS pstore support" depends on X86 help This module instantiates the persistent storage on x86 ChromeOS devices. It can be used to store away console logs and crash information across reboots. The range of memory used is 0xf00000-0x1000000, traditionally the memory used to back VGA controller memory. If you have a supported Chromebook, choose Y or M here. The module will be called chromeos_pstore. config CHROMEOS_TBMC tristate "ChromeOS Tablet Switch Controller" depends on ACPI depends on INPUT help This option adds a driver for the tablet switch on select Chrome OS systems. To compile this driver as a module, choose M here: the module will be called chromeos_tbmc. config CROS_EC tristate "ChromeOS Embedded Controller" select CROS_EC_PROTO depends on X86 || ARM || ARM64 || COMPILE_TEST help If you say Y here you get support for the ChromeOS Embedded Controller (EC) providing keyboard, battery and power services. You also need to enable the driver for the bus you are using. The protocol for talking to the EC is defined by the bus driver. To compile this driver as a module, choose M here: the module will be called cros_ec. config CROS_EC_I2C tristate "ChromeOS Embedded Controller (I2C)" depends on CROS_EC && I2C help If you say Y here, you get support for talking to the ChromeOS EC through an I2C bus. This uses a simple byte-level protocol with a checksum. Failing accesses will be retried three times to improve reliability. config CROS_EC_RPMSG tristate "ChromeOS Embedded Controller (rpmsg)" depends on CROS_EC && RPMSG && OF help If you say Y here, you get support for talking to the ChromeOS EC through rpmsg. This uses a simple byte-level protocol with a checksum. Also since there's no addition EC-to-host interrupt, this use a byte in message to distinguish host event from host command. To compile this driver as a module, choose M here: the module will be called cros_ec_rpmsg. config CROS_EC_ISHTP tristate "ChromeOS Embedded Controller (ISHTP)" depends on CROS_EC depends on INTEL_ISH_HID help If you say Y here, you get support for talking to the ChromeOS EC firmware running on Intel Integrated Sensor Hub (ISH), using the ISH Transport protocol (ISH-TP). This uses a simple byte-level protocol with a checksum. To compile this driver as a module, choose M here: the module will be called cros_ec_ishtp. config CROS_EC_SPI tristate "ChromeOS Embedded Controller (SPI)" depends on CROS_EC && SPI help If you say Y here, you get support for talking to the ChromeOS EC through a SPI bus, using a byte-level protocol. Since the EC's response time cannot be guaranteed, we support ignoring 'pre-amble' bytes before the response actually starts. config CROS_EC_LPC tristate "ChromeOS Embedded Controller (LPC)" depends on CROS_EC && ACPI && (X86 || COMPILE_TEST) help If you say Y here, you get support for talking to the ChromeOS EC over an LPC bus, including the LPC Microchip EC (MEC) variant. This uses a simple byte-level protocol with a checksum. This is used for userspace access only. The kernel typically has its own communication methods. To compile this driver as a module, choose M here: the module will be called cros_ec_lpcs. config CROS_EC_PROTO bool help ChromeOS EC communication protocol helpers. config CROS_KBD_LED_BACKLIGHT tristate "Backlight LED support for Chrome OS keyboards" depends on LEDS_CLASS && ACPI help This option enables support for the keyboard backlight LEDs on select Chrome OS systems. To compile this driver as a module, choose M here: the module will be called cros_kbd_led_backlight. config CROS_EC_CHARDEV tristate "ChromeOS EC miscdevice" depends on MFD_CROS_EC_DEV default MFD_CROS_EC_DEV help This driver adds file operations support to talk with the ChromeOS EC from userspace via a character device. To compile this driver as a module, choose M here: the module will be called cros_ec_chardev. config CROS_EC_LIGHTBAR tristate "Chromebook Pixel's lightbar support" depends on MFD_CROS_EC_DEV default MFD_CROS_EC_DEV help This option exposes the Chromebook Pixel's lightbar to userspace. To compile this driver as a module, choose M here: the module will be called cros_ec_lightbar. config CROS_EC_VBC tristate "ChromeOS EC vboot context support" depends on MFD_CROS_EC_DEV && OF default MFD_CROS_EC_DEV help This option exposes the ChromeOS EC vboot context nvram to userspace. To compile this driver as a module, choose M here: the module will be called cros_ec_vbc. config CROS_EC_DEBUGFS tristate "Export ChromeOS EC internals in DebugFS" depends on MFD_CROS_EC_DEV && DEBUG_FS default MFD_CROS_EC_DEV help This option exposes the ChromeOS EC device internals to userspace. To compile this driver as a module, choose M here: the module will be called cros_ec_debugfs. config CROS_EC_SENSORHUB tristate "ChromeOS EC MEMS Sensor Hub" depends on MFD_CROS_EC_DEV default MFD_CROS_EC_DEV help Allow loading IIO sensors. This driver is loaded by MFD and will in turn query the EC and register the sensors. It also spreads the sensor data coming from the EC to the IIO sensor object. To compile this driver as a module, choose M here: the module will be called cros_ec_sensorhub. config CROS_EC_SYSFS tristate "ChromeOS EC control and information through sysfs" depends on MFD_CROS_EC_DEV && SYSFS default MFD_CROS_EC_DEV help This option exposes some sysfs attributes to control and get information from ChromeOS EC. To compile this driver as a module, choose M here: the module will be called cros_ec_sysfs. config CROS_EC_TYPEC tristate "ChromeOS EC Type-C Connector Control" depends on MFD_CROS_EC_DEV && TYPEC depends on CROS_USBPD_NOTIFY depends on USB_ROLE_SWITCH default MFD_CROS_EC_DEV help If you say Y here, you get support for accessing Type C connector information from the Chrome OS EC. To compile this driver as a module, choose M here: the module will be called cros_ec_typec. config CROS_USBPD_LOGGER tristate "Logging driver for USB PD charger" depends on CHARGER_CROS_USBPD default y select RTC_LIB help This option enables support for logging event data for the USB PD charger available in the Embedded Controller on ChromeOS systems. To compile this driver as a module, choose M here: the module will be called cros_usbpd_logger. config CROS_USBPD_NOTIFY tristate "ChromeOS Type-C power delivery event notifier" depends on MFD_CROS_EC_DEV default MFD_CROS_EC_DEV help If you say Y here, you get support for Type-C PD event notifications from the ChromeOS EC. On ACPI platorms this driver will bind to the GOOG0003 ACPI device, and on platforms which don't have this device it will get initialized on ECs which support the feature EC_FEATURE_USB_PD. To compile this driver as a module, choose M here: the module will be called cros_usbpd_notify. source "drivers/platform/chrome/wilco_ec/Kconfig" endif # CHROMEOS_PLATFORMS
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