Commit | Line | Data |
---|---|---|
6af6dc2d SG |
1 | ChromeOS EC Keyboard |
2 | ||
3 | Google's ChromeOS EC Keyboard is a simple matrix keyboard implemented on | |
4 | a separate EC (Embedded Controller) device. It provides a message for reading | |
5 | key scans from the EC. These are then converted into keycodes for processing | |
6 | by the kernel. | |
7 | ||
8 | This binding is based on matrix-keymap.txt and extends/modifies it as follows: | |
9 | ||
10 | Required properties: | |
11 | - compatible: "google,cros-ec-keyb" | |
12 | ||
13 | Optional properties: | |
14 | - google,needs-ghost-filter: True to enable a ghost filter for the matrix | |
15 | keyboard. This is recommended if the EC does not have its own logic or | |
16 | hardware for this. | |
17 | ||
18 | ||
19 | Example: | |
20 | ||
21 | cros-ec-keyb { | |
22 | compatible = "google,cros-ec-keyb"; | |
23 | keypad,num-rows = <8>; | |
24 | keypad,num-columns = <13>; | |
25 | google,needs-ghost-filter; | |
26 | /* | |
27 | * Keymap entries take the form of 0xRRCCKKKK where | |
28 | * RR=Row CC=Column KKKK=Key Code | |
29 | * The values below are for a US keyboard layout and | |
30 | * are taken from the Linux driver. Note that the | |
31 | * 102ND key is not used for US keyboards. | |
32 | */ | |
33 | linux,keymap = < | |
34 | /* CAPSLCK F1 B F10 */ | |
35 | 0x0001003a 0x0002003b 0x00030030 0x00040044 | |
36 | /* N = R_ALT ESC */ | |
37 | 0x00060031 0x0008000d 0x000a0064 0x01010001 | |
38 | /* F4 G F7 H */ | |
39 | 0x0102003e 0x01030022 0x01040041 0x01060023 | |
40 | /* ' F9 BKSPACE L_CTRL */ | |
41 | 0x01080028 0x01090043 0x010b000e 0x0200001d | |
42 | /* TAB F3 T F6 */ | |
43 | 0x0201000f 0x0202003d 0x02030014 0x02040040 | |
44 | /* ] Y 102ND [ */ | |
45 | 0x0205001b 0x02060015 0x02070056 0x0208001a | |
46 | /* F8 GRAVE F2 5 */ | |
47 | 0x02090042 0x03010029 0x0302003c 0x03030006 | |
48 | /* F5 6 - \ */ | |
49 | 0x0304003f 0x03060007 0x0308000c 0x030b002b | |
50 | /* R_CTRL A D F */ | |
51 | 0x04000061 0x0401001e 0x04020020 0x04030021 | |
52 | /* S K J ; */ | |
53 | 0x0404001f 0x04050025 0x04060024 0x04080027 | |
54 | /* L ENTER Z C */ | |
55 | 0x04090026 0x040b001c 0x0501002c 0x0502002e | |
56 | /* V X , M */ | |
57 | 0x0503002f 0x0504002d 0x05050033 0x05060032 | |
58 | /* L_SHIFT / . SPACE */ | |
59 | 0x0507002a 0x05080035 0x05090034 0x050B0039 | |
60 | /* 1 3 4 2 */ | |
61 | 0x06010002 0x06020004 0x06030005 0x06040003 | |
62 | /* 8 7 0 9 */ | |
63 | 0x06050009 0x06060008 0x0608000b 0x0609000a | |
64 | /* L_ALT DOWN RIGHT Q */ | |
65 | 0x060a0038 0x060b006c 0x060c006a 0x07010010 | |
66 | /* E R W I */ | |
67 | 0x07020012 0x07030013 0x07040011 0x07050017 | |
68 | /* U R_SHIFT P O */ | |
69 | 0x07060016 0x07070036 0x07080019 0x07090018 | |
70 | /* UP LEFT */ | |
71 | 0x070b0067 0x070c0069>; | |
72 | }; |