| # 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_ACPI |
| tristate "ChromeOS specific ACPI extensions" |
| depends on ACPI |
| help |
| This driver provides the firmware interface for the services |
| exported through the ChromeOS interfaces when using ChromeOS |
| ACPI firmware. |
| |
| If you have an ACPI-compatible Chromebook, say Y or M here. |
| The module will be called chromeos_acpi. |
| |
| 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_UART |
| tristate "ChromeOS Embedded Controller (UART)" |
| depends on CROS_EC && ACPI && SERIAL_DEV_BUS |
| help |
| If you say Y here, you get support for talking to the ChromeOS EC |
| through a UART, using a byte-level protocol. |
| |
| To compile this driver as a module, choose M here: the |
| module will be called cros_ec_uart. |
| |
| config CROS_EC_LPC |
| tristate "ChromeOS Embedded Controller (LPC)" |
| depends on CROS_EC && ACPI && (X86 || COMPILE_TEST) |
| depends on HAS_IOPORT |
| 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 || CROS_EC || MFD_CROS_EC_DEV) |
| 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_HPS_I2C |
| tristate "ChromeOS HPS device" |
| depends on HID && I2C && PM |
| help |
| Say Y here if you want to enable support for the ChromeOS |
| human presence sensor (HPS), attached via I2C. The driver supports a |
| sensor connected to the I2C bus and exposes it as a character device. |
| To save power, the sensor is automatically powered down when no |
| clients are accessing it. |
| |
| 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. |
| |
| config CHROMEOS_PRIVACY_SCREEN |
| tristate "ChromeOS Privacy Screen support" |
| depends on ACPI |
| depends on DRM |
| select DRM_PRIVACY_SCREEN |
| help |
| This driver provides the support needed for the in-built electronic |
| privacy screen that is present on some ChromeOS devices. When enabled, |
| this should probably always be built into the kernel to avoid or |
| minimize drm probe deferral. |
| |
| config CROS_TYPEC_SWITCH |
| tristate "ChromeOS EC Type-C Switch Control" |
| depends on MFD_CROS_EC_DEV && TYPEC && ACPI |
| default MFD_CROS_EC_DEV |
| help |
| If you say Y here, you get support for configuring the ChromeOS EC Type-C |
| muxes and retimers. |
| |
| To compile this driver as a module, choose M here: the module will be |
| called cros_typec_switch. |
| |
| source "drivers/platform/chrome/wilco_ec/Kconfig" |
| |
| # Kunit test cases |
| config CROS_KUNIT_EC_PROTO_TEST |
| tristate "Kunit tests for ChromeOS EC protocol" if !KUNIT_ALL_TESTS |
| depends on KUNIT && CROS_EC |
| default KUNIT_ALL_TESTS |
| select CROS_EC_PROTO |
| help |
| Kunit tests for ChromeOS EC protocol. |
| |
| endif # CHROMEOS_PLATFORMS |
