i8042.h 2.2 KB

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  1. /* SPDX-License-Identifier: GPL-2.0+ */
  2. /*
  3. * (C) Copyright 2002 ELTEC Elektronik AG
  4. * Frank Gottschling <fgottschling@eltec.de>
  5. */
  6. /* i8042.h - Intel 8042 keyboard driver header */
  7. #ifndef _I8042_H_
  8. #define _I8042_H_
  9. /* defines */
  10. #define I8042_DATA_REG 0x60 /* keyboard i/o buffer */
  11. #define I8042_STS_REG 0x64 /* keyboard status read */
  12. #define I8042_CMD_REG 0x64 /* keyboard ctrl write */
  13. /* Status register bit defines */
  14. #define STATUS_OBF (1 << 0)
  15. #define STATUS_IBF (1 << 1)
  16. /* Configuration byte bit defines */
  17. #define CONFIG_KIRQ_EN (1 << 0)
  18. #define CONFIG_MIRQ_EN (1 << 1)
  19. #define CONFIG_SET_BIST (1 << 2)
  20. #define CONFIG_KCLK_DIS (1 << 4)
  21. #define CONFIG_MCLK_DIS (1 << 5)
  22. #define CONFIG_AT_TRANS (1 << 6)
  23. /* i8042 commands */
  24. #define CMD_RD_CONFIG 0x20 /* read configuration byte */
  25. #define CMD_WR_CONFIG 0x60 /* write configuration byte */
  26. #define CMD_SELF_TEST 0xaa /* controller self-test */
  27. #define CMD_KBD_DIS 0xad /* keyboard disable */
  28. #define CMD_KBD_EN 0xae /* keyboard enable */
  29. #define CMD_SET_KBD_LED 0xed /* set keyboard led */
  30. #define CMD_DRAIN_OUTPUT 0xf4 /* drain output buffer */
  31. #define CMD_RESET_KBD 0xff /* reset keyboard */
  32. /* i8042 command result */
  33. #define KBC_TEST_OK 0x55
  34. #define KBD_ACK 0xfa
  35. #define KBD_POR 0xaa
  36. /* keyboard scan codes */
  37. #define KBD_US 0 /* default US layout */
  38. #define KBD_GER 1 /* german layout */
  39. #define KBD_TIMEOUT 1000 /* 1 sec */
  40. #define KBD_RESET_TRIES 3
  41. #define AS 0 /* normal character index */
  42. #define SH 1 /* shift index */
  43. #define CN 2 /* control index */
  44. #define NM 3 /* numeric lock index */
  45. #define AK 4 /* right alt key */
  46. #define CP 5 /* capslock index */
  47. #define ST 6 /* stop output index */
  48. #define EX 7 /* extended code index */
  49. #define ES 8 /* escape and extended code index */
  50. #define NORMAL 0x0000 /* normal key */
  51. #define STP 0x0001 /* scroll lock stop output*/
  52. #define NUM 0x0002 /* numeric lock */
  53. #define CAPS 0x0004 /* capslock */
  54. #define SHIFT 0x0008 /* shift */
  55. #define CTRL 0x0010 /* control*/
  56. #define EXT 0x0020 /* extended scan code 0xe0 */
  57. #define ESC 0x0040 /* escape key press */
  58. #define E1 0x0080 /* extended scan code 0xe1 */
  59. #define BRK 0x0100 /* make break flag for keyboard */
  60. #define ALT 0x0200 /* right alt */
  61. #endif /* _I8042_H_ */