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This is a driver for ACPI-based keyboard backlight LEDs found on Chromebooks. The driver locates \\_SB.KBLT ACPI device and exports backlight as "chromeos::kbd_backlight" LED class device in sysfs. Signed-off-by: Simon Que <sque@chromium.org> Signed-off-by: Duncan Laurie <dlaurie@chromium.org> Tested-by: Evan McClain <aeroevan@gmail.com> Signed-off-by: Dmitry Torokhov <dtor@chromium.org> Signed-off-by: Olof Johansson <olof@lixom.net>
78 lines
2.5 KiB
Plaintext
78 lines
2.5 KiB
Plaintext
#
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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 CROS_EC_CHARDEV
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tristate "Chrome OS Embedded Controller userspace device interface"
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depends on MFD_CROS_EC
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---help---
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This driver adds support to talk with the ChromeOS EC from userspace.
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If you have a supported Chromebook, choose Y or M here.
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The module will be called cros_ec_dev.
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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 && (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_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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