# 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	depends on !CPU_BIG_ENDIAN || 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 CHROMEOS_OF_HW_PROBER	tristate "ChromeOS Device Tree Hardware Prober"	depends on OF	depends on I2C	select OF_DYNAMIC	default OF	help	  This option enables the device tree hardware prober for ChromeOS	  devices. The driver will probe the correct component variant in	  devices that have multiple drop-in options for one component. config CROS_EC	tristate "ChromeOS Embedded Controller"	select CROS_EC_PROTO	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	tristate	help	  ChromeOS EC communication protocol helpers. config CROS_KBD_LED_BACKLIGHT	tristate "Backlight LED support for Chrome OS keyboards"	depends on LEDS_CLASS	depends on MFD_CROS_EC_DEV || (MFD_CROS_EC_DEV=n && 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_ALTMODES	bool	help	  Selectable symbol to enable altmodes. 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	select CROS_EC_TYPEC_ALTMODES if TYPEC_DP_ALTMODE	select CROS_EC_TYPEC_ALTMODES if TYPEC_TBT_ALTMODE	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 platforms 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 casesconfig 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