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 100