LXR linux/drivers/platform/chrome/Kconfig

   1#
   2# Platform support for Chrome OS hardware (Chromebooks and Chromeboxes)
   3#
   4
   5menuconfig CHROME_PLATFORMS
   6        bool "Platform support for Chrome hardware"
   7        depends on X86 || ARM || ARM64 || COMPILE_TEST
   8        ---help---
   9          Say Y here to get to see options for platform support for
  10          various Chromebooks and Chromeboxes. This option alone does
  11          not add any kernel code.
  12
  13          If you say N, all options in this submenu will be skipped and disabled.
  14
  15if CHROME_PLATFORMS
  16
  17config CHROMEOS_LAPTOP
  18        tristate "Chrome OS Laptop"
  19        depends on I2C && DMI && X86
  20        ---help---
  21          This driver instantiates i2c and smbus devices such as
  22          light sensors and touchpads.
  23
  24          If you have a supported Chromebook, choose Y or M here.
  25          The module will be called chromeos_laptop.
  26
  27config CHROMEOS_PSTORE
  28        tristate "Chrome OS pstore support"
  29        depends on X86
  30        ---help---
  31          This module instantiates the persistent storage on x86 ChromeOS
  32          devices. It can be used to store away console logs and crash
  33          information across reboots.
  34
  35          The range of memory used is 0xf00000-0x1000000, traditionally
  36          the memory used to back VGA controller memory.
  37
  38          If you have a supported Chromebook, choose Y or M here.
  39          The module will be called chromeos_pstore.
  40
  41config CHROMEOS_TBMC
  42        tristate "ChromeOS Tablet Switch Controller"
  43        depends on ACPI
  44        depends on INPUT
  45        help
  46          This option adds a driver for the tablet switch on
  47          select Chrome OS systems.
  48
  49          To compile this driver as a module, choose M here: the
  50          module will be called chromeos_tbmc.
  51
  52config CROS_EC_CTL
  53        tristate
  54
  55config CROS_EC_I2C
  56        tristate "ChromeOS Embedded Controller (I2C)"
  57        depends on MFD_CROS_EC && I2C
  58
  59        help
  60          If you say Y here, you get support for talking to the ChromeOS
  61          EC through an I2C bus. This uses a simple byte-level protocol with
  62          a checksum. Failing accesses will be retried three times to
  63          improve reliability.
  64
  65config CROS_EC_SPI
  66        tristate "ChromeOS Embedded Controller (SPI)"
  67        depends on MFD_CROS_EC && SPI
  68
  69        ---help---
  70          If you say Y here, you get support for talking to the ChromeOS EC
  71          through a SPI bus, using a byte-level protocol. Since the EC's
  72          response time cannot be guaranteed, we support ignoring
  73          'pre-amble' bytes before the response actually starts.
  74
  75config CROS_EC_LPC
  76        tristate "ChromeOS Embedded Controller (LPC)"
  77        depends on MFD_CROS_EC && ACPI && (X86 || COMPILE_TEST)
  78        help
  79          If you say Y here, you get support for talking to the ChromeOS EC
  80          over an LPC bus. This uses a simple byte-level protocol with a
  81          checksum. This is used for userspace access only. The kernel
  82          typically has its own communication methods.
  83
  84          To compile this driver as a module, choose M here: the
  85          module will be called cros_ec_lpc.
  86
  87config CROS_EC_LPC_MEC
  88        bool "ChromeOS Embedded Controller LPC Microchip EC (MEC) variant"
  89        depends on CROS_EC_LPC
  90        default n
  91        help
  92          If you say Y here, a variant LPC protocol for the Microchip EC
  93          will be used. Note that this variant is not backward compatible
  94          with non-Microchip ECs.
  95
  96          If you have a ChromeOS Embedded Controller Microchip EC variant
  97          choose Y here.
  98
  99config CROS_EC_PROTO
 100        bool
 101        help
 102          ChromeOS EC communication protocol helpers.
 103
 104config CROS_KBD_LED_BACKLIGHT
 105        tristate "Backlight LED support for Chrome OS keyboards"
 106        depends on LEDS_CLASS && ACPI
 107        help
 108          This option enables support for the keyboard backlight LEDs on
 109          select Chrome OS systems.
 110
 111          To compile this driver as a module, choose M here: the
 112          module will be called cros_kbd_led_backlight.
 113
 114endif # CHROMEOS_PLATFORMS
 115