cros-ec-keyb.txt 2.6 KB

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