include/linux/i8042.h

   1 #ifndef _LINUX_I8042_H
   2 #define _LINUX_I8042_H
   3
   4 /*
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 as published by
   7  * the Free Software Foundation.
   8  */
   9
  10 #include <linux/types.h>
  11
  12 /*
  13  * Standard commands.
  14  */
  15
  16 #define I8042_CMD_CTL_RCTR      0x0120
  17 #define I8042_CMD_CTL_WCTR      0x1060
  18 #define I8042_CMD_CTL_TEST      0x01aa
  19
  20 #define I8042_CMD_KBD_DISABLE   0x00ad
  21 #define I8042_CMD_KBD_ENABLE    0x00ae
  22 #define I8042_CMD_KBD_TEST      0x01ab
  23 #define I8042_CMD_KBD_LOOP      0x11d2
  24
  25 #define I8042_CMD_AUX_DISABLE   0x00a7
  26 #define I8042_CMD_AUX_ENABLE    0x00a8
  27 #define I8042_CMD_AUX_TEST      0x01a9
  28 #define I8042_CMD_AUX_SEND      0x10d4
  29 #define I8042_CMD_AUX_LOOP      0x11d3
  30
  31 #define I8042_CMD_MUX_PFX       0x0090
  32 #define I8042_CMD_MUX_SEND      0x1090
  33
  34 /*
  35  * Status register bits.
  36  */
  37
  38 #define I8042_STR_PARITY        0x80
  39 #define I8042_STR_TIMEOUT       0x40
  40 #define I8042_STR_AUXDATA       0x20
  41 #define I8042_STR_KEYLOCK       0x10
  42 #define I8042_STR_CMDDAT        0x08
  43 #define I8042_STR_MUXERR        0x04
  44 #define I8042_STR_IBF           0x02
  45 #define I8042_STR_OBF           0x01
  46
  47 /*
  48  * Control register bits.
  49  */
  50
  51 #define I8042_CTR_KBDINT        0x01
  52 #define I8042_CTR_AUXINT        0x02
  53 #define I8042_CTR_IGNKEYLOCK    0x08
  54 #define I8042_CTR_KBDDIS        0x10
  55 #define I8042_CTR_AUXDIS        0x20
  56 #define I8042_CTR_XLATE         0x40
  57
  58 struct serio;
  59
  60 #if defined(CONFIG_SERIO_I8042) || defined(CONFIG_SERIO_I8042_MODULE)
  61
  62 void i8042_lock_chip(void);
  63 void i8042_unlock_chip(void);
  64 int i8042_command(unsigned char *param, int command);
  65 int i8042_install_filter(bool (*filter)(unsigned char data, unsigned char str,
  66                                         struct serio *serio));
  67 int i8042_remove_filter(bool (*filter)(unsigned char data, unsigned char str,
  68                                        struct serio *serio));
  69
  70 #else
  71
  72 static inline void i8042_lock_chip(void)
  73 {
  74 }
  75
  76 static inline void i8042_unlock_chip(void)
  77 {
  78 }
  79
  80 static inline int i8042_command(unsigned char *param, int command)
  81 {
  82         return -ENODEV;
  83 }
  84
  85 static inline int i8042_install_filter(bool (*filter)(unsigned char data, unsigned char str,
  86                                         struct serio *serio))
  87 {
  88         return -ENODEV;
  89 }
  90
  91 static inline int i8042_remove_filter(bool (*filter)(unsigned char data, unsigned char str,
  92                                        struct serio *serio))
  93 {
  94         return -ENODEV;
  95 }
  96
  97 #endif
  98
  99 #endif