#
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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_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_CTL
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tristate
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config CROS_EC_I2C
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tristate "ChromeOS Embedded Controller (I2C)"
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depends on MFD_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_SPI
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tristate "ChromeOS Embedded Controller (SPI)"
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depends on MFD_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_LPC
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tristate "ChromeOS Embedded Controller (LPC)"
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depends on MFD_CROS_EC && ACPI && (X86 || COMPILE_TEST)
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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. This uses a simple byte-level protocol with a
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checksum. This is used for userspace access only. The kernel
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typically has its own 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_lpc.
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config CROS_EC_LPC_MEC
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bool "ChromeOS Embedded Controller LPC Microchip EC (MEC) variant"
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depends on CROS_EC_LPC
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default n
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help
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If you say Y here, a variant LPC protocol for the Microchip EC
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will be used. Note that this variant is not backward compatible
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with non-Microchip ECs.
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If you have a ChromeOS Embedded Controller Microchip EC variant
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choose Y here.
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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
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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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endif # CHROMEOS_PLATFORMS
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