| /* SPDX-License-Identifier: GPL-2.0-only */ |
| #ifndef _LINUX_I8042_H |
| #define _LINUX_I8042_H |
| |
| |
| #include <linux/types.h> |
| |
| /* |
| * Standard commands. |
| */ |
| |
| #define I8042_CMD_CTL_RCTR 0x0120 |
| #define I8042_CMD_CTL_WCTR 0x1060 |
| #define I8042_CMD_CTL_TEST 0x01aa |
| |
| #define I8042_CMD_KBD_DISABLE 0x00ad |
| #define I8042_CMD_KBD_ENABLE 0x00ae |
| #define I8042_CMD_KBD_TEST 0x01ab |
| #define I8042_CMD_KBD_LOOP 0x11d2 |
| |
| #define I8042_CMD_AUX_DISABLE 0x00a7 |
| #define I8042_CMD_AUX_ENABLE 0x00a8 |
| #define I8042_CMD_AUX_TEST 0x01a9 |
| #define I8042_CMD_AUX_SEND 0x10d4 |
| #define I8042_CMD_AUX_LOOP 0x11d3 |
| |
| #define I8042_CMD_MUX_PFX 0x0090 |
| #define I8042_CMD_MUX_SEND 0x1090 |
| |
| /* |
| * Status register bits. |
| */ |
| |
| #define I8042_STR_PARITY 0x80 |
| #define I8042_STR_TIMEOUT 0x40 |
| #define I8042_STR_AUXDATA 0x20 |
| #define I8042_STR_KEYLOCK 0x10 |
| #define I8042_STR_CMDDAT 0x08 |
| #define I8042_STR_MUXERR 0x04 |
| #define I8042_STR_IBF 0x02 |
| #define I8042_STR_OBF 0x01 |
| |
| /* |
| * Control register bits. |
| */ |
| |
| #define I8042_CTR_KBDINT 0x01 |
| #define I8042_CTR_AUXINT 0x02 |
| #define I8042_CTR_IGNKEYLOCK 0x08 |
| #define I8042_CTR_KBDDIS 0x10 |
| #define I8042_CTR_AUXDIS 0x20 |
| #define I8042_CTR_XLATE 0x40 |
| |
| struct serio; |
| |
| #if defined(CONFIG_SERIO_I8042) || defined(CONFIG_SERIO_I8042_MODULE) |
| |
| void i8042_lock_chip(void); |
| void i8042_unlock_chip(void); |
| int i8042_command(unsigned char *param, int command); |
| int i8042_install_filter(bool (*filter)(unsigned char data, unsigned char str, |
| struct serio *serio)); |
| int i8042_remove_filter(bool (*filter)(unsigned char data, unsigned char str, |
| struct serio *serio)); |
| |
| #else |
| |
| static inline void i8042_lock_chip(void) |
| { |
| } |
| |
| static inline void i8042_unlock_chip(void) |
| { |
| } |
| |
| static inline int i8042_command(unsigned char *param, int command) |
| { |
| return -ENODEV; |
| } |
| |
| static inline int i8042_install_filter(bool (*filter)(unsigned char data, unsigned char str, |
| struct serio *serio)) |
| { |
| return -ENODEV; |
| } |
| |
| static inline int i8042_remove_filter(bool (*filter)(unsigned char data, unsigned char str, |
| struct serio *serio)) |
| { |
| return -ENODEV; |
| } |
| |
| #endif |
| |
| #endif |