311 lines
9.8 KiB
Plaintext
311 lines
9.8 KiB
Plaintext
# 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)
|
|
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)
|
|
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
|