# # 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_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_CTL tristate config CROS_EC_I2C tristate "ChromeOS Embedded Controller (I2C)" depends on MFD_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_SPI tristate "ChromeOS Embedded Controller (SPI)" depends on MFD_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 MFD_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. 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_lpc. config CROS_EC_LPC_MEC bool "ChromeOS Embedded Controller LPC Microchip EC (MEC) variant" depends on CROS_EC_LPC default n help If you say Y here, a variant LPC protocol for the Microchip EC will be used. Note that this variant is not backward compatible with non-Microchip ECs. If you have a ChromeOS Embedded Controller Microchip EC variant choose Y here. 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. endif # CHROMEOS_PLATFORMS