312 lines
9.9 KiB
Plaintext
312 lines
9.9 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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#
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# Platform support for Chrome OS hardware (Chromebooks and Chromeboxes)
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#
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menuconfig CHROME_PLATFORMS
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bool "Platform support for Chrome hardware"
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depends on X86 || ARM || ARM64 || COMPILE_TEST
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help
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Say Y here to get to see options for platform support for
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various Chromebooks and Chromeboxes. This option alone does
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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 CHROME_PLATFORMS
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config CHROMEOS_ACPI
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tristate "ChromeOS specific ACPI extensions"
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depends on ACPI
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help
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This driver provides the firmware interface for the services
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exported through the ChromeOS interfaces when using ChromeOS
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ACPI firmware.
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If you have an ACPI-compatible Chromebook, say Y or M here.
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The module will be called chromeos_acpi.
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config CHROMEOS_LAPTOP
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tristate "Chrome OS Laptop"
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depends on I2C && DMI && X86
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help
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This driver instantiates i2c and smbus devices such as
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light sensors and touchpads.
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If you have a supported Chromebook, choose Y or M here.
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The module will be called chromeos_laptop.
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config CHROMEOS_PSTORE
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tristate "Chrome OS pstore support"
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depends on X86
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help
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This module instantiates the persistent storage on x86 ChromeOS
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devices. It can be used to store away console logs and crash
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information across reboots.
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The range of memory used is 0xf00000-0x1000000, traditionally
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the memory used to back VGA controller memory.
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If you have a supported Chromebook, choose Y or M here.
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The module will be called chromeos_pstore.
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config CHROMEOS_TBMC
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tristate "ChromeOS Tablet Switch Controller"
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depends on ACPI
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depends on INPUT
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help
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This option adds a driver for the tablet switch on
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select Chrome OS systems.
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To compile this driver as a module, choose M here: the
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module will be called chromeos_tbmc.
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config CROS_EC
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tristate "ChromeOS Embedded Controller"
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select CROS_EC_PROTO
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depends on X86 || ARM || ARM64 || COMPILE_TEST
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help
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If you say Y here you get support for the ChromeOS Embedded
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Controller (EC) providing keyboard, battery and power services.
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You also need to enable the driver for the bus you are using. The
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protocol for talking to the EC is defined by the bus driver.
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To compile this driver as a module, choose M here: the
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module will be called cros_ec.
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config CROS_EC_I2C
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tristate "ChromeOS Embedded Controller (I2C)"
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depends on CROS_EC && I2C
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help
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If you say Y here, you get support for talking to the ChromeOS
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EC through an I2C bus. This uses a simple byte-level protocol with
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a checksum. Failing accesses will be retried three times to
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improve reliability.
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config CROS_EC_RPMSG
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tristate "ChromeOS Embedded Controller (rpmsg)"
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depends on CROS_EC && RPMSG && OF
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help
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If you say Y here, you get support for talking to the ChromeOS EC
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through rpmsg. This uses a simple byte-level protocol with a
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checksum. Also since there's no addition EC-to-host interrupt, this
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use a byte in message to distinguish host event from host command.
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To compile this driver as a module, choose M here: the
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module will be called cros_ec_rpmsg.
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config CROS_EC_ISHTP
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tristate "ChromeOS Embedded Controller (ISHTP)"
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depends on CROS_EC
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depends on INTEL_ISH_HID
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help
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If you say Y here, you get support for talking to the ChromeOS EC
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firmware running on Intel Integrated Sensor Hub (ISH), using the
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ISH Transport protocol (ISH-TP). This uses a simple byte-level
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protocol with a checksum.
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To compile this driver as a module, choose M here: the
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module will be called cros_ec_ishtp.
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config CROS_EC_SPI
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tristate "ChromeOS Embedded Controller (SPI)"
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depends on CROS_EC && SPI
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help
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If you say Y here, you get support for talking to the ChromeOS EC
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through a SPI bus, using a byte-level protocol. Since the EC's
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response time cannot be guaranteed, we support ignoring
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'pre-amble' bytes before the response actually starts.
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config CROS_EC_UART
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tristate "ChromeOS Embedded Controller (UART)"
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depends on CROS_EC && ACPI && SERIAL_DEV_BUS
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help
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If you say Y here, you get support for talking to the ChromeOS EC
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through a UART, using a byte-level protocol.
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To compile this driver as a module, choose M here: the
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module will be called cros_ec_uart.
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config CROS_EC_LPC
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tristate "ChromeOS Embedded Controller (LPC)"
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depends on CROS_EC && ACPI && (X86 || COMPILE_TEST)
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depends on HAS_IOPORT
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help
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If you say Y here, you get support for talking to the ChromeOS EC
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over an LPC bus, including the LPC Microchip EC (MEC) variant.
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This uses a simple byte-level protocol with a checksum. This is
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used for userspace access only. The kernel typically has its own
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communication methods.
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To compile this driver as a module, choose M here: the
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module will be called cros_ec_lpcs.
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config CROS_EC_PROTO
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bool
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help
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ChromeOS EC communication protocol helpers.
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config CROS_KBD_LED_BACKLIGHT
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tristate "Backlight LED support for Chrome OS keyboards"
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depends on LEDS_CLASS && (ACPI || CROS_EC || MFD_CROS_EC_DEV)
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help
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This option enables support for the keyboard backlight LEDs on
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select Chrome OS systems.
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To compile this driver as a module, choose M here: the
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module will be called cros_kbd_led_backlight.
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config CROS_EC_CHARDEV
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tristate "ChromeOS EC miscdevice"
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depends on MFD_CROS_EC_DEV
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default MFD_CROS_EC_DEV
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help
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This driver adds file operations support to talk with the
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ChromeOS EC from userspace via a character device.
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To compile this driver as a module, choose M here: the
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module will be called cros_ec_chardev.
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config CROS_EC_LIGHTBAR
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tristate "Chromebook Pixel's lightbar support"
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depends on MFD_CROS_EC_DEV
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default MFD_CROS_EC_DEV
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help
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This option exposes the Chromebook Pixel's lightbar to
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userspace.
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To compile this driver as a module, choose M here: the
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module will be called cros_ec_lightbar.
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config CROS_EC_VBC
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tristate "ChromeOS EC vboot context support"
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depends on MFD_CROS_EC_DEV && OF
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default MFD_CROS_EC_DEV
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help
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This option exposes the ChromeOS EC vboot context nvram to
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userspace.
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To compile this driver as a module, choose M here: the
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module will be called cros_ec_vbc.
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config CROS_EC_DEBUGFS
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tristate "Export ChromeOS EC internals in DebugFS"
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depends on MFD_CROS_EC_DEV && DEBUG_FS
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default MFD_CROS_EC_DEV
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help
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This option exposes the ChromeOS EC device internals to
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userspace.
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To compile this driver as a module, choose M here: the
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module will be called cros_ec_debugfs.
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config CROS_EC_SENSORHUB
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tristate "ChromeOS EC MEMS Sensor Hub"
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depends on MFD_CROS_EC_DEV
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default MFD_CROS_EC_DEV
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help
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Allow loading IIO sensors. This driver is loaded by MFD and will in
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turn query the EC and register the sensors.
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It also spreads the sensor data coming from the EC to the IIO sensor
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object.
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To compile this driver as a module, choose M here: the
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module will be called cros_ec_sensorhub.
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config CROS_EC_SYSFS
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tristate "ChromeOS EC control and information through sysfs"
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depends on MFD_CROS_EC_DEV && SYSFS
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default MFD_CROS_EC_DEV
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help
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This option exposes some sysfs attributes to control and get
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information from ChromeOS EC.
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To compile this driver as a module, choose M here: the
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module will be called cros_ec_sysfs.
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config CROS_EC_TYPEC
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tristate "ChromeOS EC Type-C Connector Control"
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depends on MFD_CROS_EC_DEV && TYPEC
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depends on CROS_USBPD_NOTIFY
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depends on USB_ROLE_SWITCH
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default MFD_CROS_EC_DEV
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help
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If you say Y here, you get support for accessing Type C connector
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information from the Chrome OS EC.
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To compile this driver as a module, choose M here: the module will be
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called cros-ec-typec.
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config CROS_HPS_I2C
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tristate "ChromeOS HPS device"
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depends on HID && I2C && PM
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help
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Say Y here if you want to enable support for the ChromeOS
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human presence sensor (HPS), attached via I2C. The driver supports a
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sensor connected to the I2C bus and exposes it as a character device.
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To save power, the sensor is automatically powered down when no
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clients are accessing it.
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config CROS_USBPD_LOGGER
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tristate "Logging driver for USB PD charger"
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depends on CHARGER_CROS_USBPD
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default y
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select RTC_LIB
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help
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This option enables support for logging event data for the USB PD charger
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available in the Embedded Controller on ChromeOS systems.
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To compile this driver as a module, choose M here: the
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module will be called cros_usbpd_logger.
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config CROS_USBPD_NOTIFY
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tristate "ChromeOS Type-C power delivery event notifier"
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depends on MFD_CROS_EC_DEV
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default MFD_CROS_EC_DEV
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help
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If you say Y here, you get support for Type-C PD event notifications
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from the ChromeOS EC. On ACPI platorms this driver will bind to the
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GOOG0003 ACPI device, and on platforms which don't have this device it
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will get initialized on ECs which support the feature
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EC_FEATURE_USB_PD.
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To compile this driver as a module, choose M here: the
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module will be called cros_usbpd_notify.
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config CHROMEOS_PRIVACY_SCREEN
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tristate "ChromeOS Privacy Screen support"
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depends on ACPI
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depends on DRM
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select DRM_PRIVACY_SCREEN
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help
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This driver provides the support needed for the in-built electronic
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privacy screen that is present on some ChromeOS devices. When enabled,
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this should probably always be built into the kernel to avoid or
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minimize drm probe deferral.
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config CROS_TYPEC_SWITCH
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tristate "ChromeOS EC Type-C Switch Control"
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depends on MFD_CROS_EC_DEV && TYPEC && ACPI
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default MFD_CROS_EC_DEV
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help
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If you say Y here, you get support for configuring the ChromeOS EC Type-C
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muxes and retimers.
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To compile this driver as a module, choose M here: the module will be
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called cros_typec_switch.
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source "drivers/platform/chrome/wilco_ec/Kconfig"
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# Kunit test cases
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config CROS_KUNIT_EC_PROTO_TEST
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tristate "Kunit tests for ChromeOS EC protocol" if !KUNIT_ALL_TESTS
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depends on KUNIT && CROS_EC
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default KUNIT_ALL_TESTS
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select CROS_EC_PROTO
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help
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Kunit tests for ChromeOS EC protocol.
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endif # CHROMEOS_PLATFORMS
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