| # SPDX-License-Identifier: GPL-2.0-only |
| # |
| # Platform support for Chrome OS hardware (Chromebooks and Chromeboxes) |
| # |
| |
| config MFD_CROS_EC |
| tristate "Platform support for Chrome hardware (transitional)" |
| select CHROME_PLATFORMS |
| select CROS_EC |
| select CONFIG_MFD_CROS_EC_DEV |
| depends on X86 || ARM || ARM64 || COMPILE_TEST |
| help |
| This is a transitional Kconfig option and will be removed after |
| everyone enables the parts individually. |
| |
| 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_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_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. |
| |
| source "drivers/platform/chrome/wilco_ec/Kconfig" |
| |
| endif # CHROMEOS_PLATFORMS |