tjh.dev
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linux
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_LPC
56 tristate "ChromeOS Embedded Controller (LPC)"
57 depends on MFD_CROS_EC && ACPI && (X86 || COMPILE_TEST)
58 help
59 If you say Y here, you get support for talking to the ChromeOS EC
60 over an LPC bus. This uses a simple byte-level protocol with a
61 checksum. This is used for userspace access only. The kernel
62 typically has its own communication methods.
63
64 To compile this driver as a module, choose M here: the
65 module will be called cros_ec_lpc.
66
67config CROS_EC_LPC_MEC
68 bool "ChromeOS Embedded Controller LPC Microchip EC (MEC) variant"
69 depends on CROS_EC_LPC
70 default n
71 help
72 If you say Y here, a variant LPC protocol for the Microchip EC
73 will be used. Note that this variant is not backward compatible
74 with non-Microchip ECs.
75
76 If you have a ChromeOS Embedded Controller Microchip EC variant
77 choose Y here.
78
79config CROS_EC_PROTO
80 bool
81 help
82 ChromeOS EC communication protocol helpers.
83
84config CROS_KBD_LED_BACKLIGHT
85 tristate "Backlight LED support for Chrome OS keyboards"
86 depends on LEDS_CLASS && ACPI
87 help
88 This option enables support for the keyboard backlight LEDs on
89 select Chrome OS systems.
90
91 To compile this driver as a module, choose M here: the
92 module will be called cros_kbd_led_backlight.
93
94endif # CHROMEOS_PLATFORMS