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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109/* SPDX-License-Identifier: GPL-2.0-only */#ifndef _LINUX_I8042_H#define _LINUX_I8042_H
#include <linux/errno.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;
/** * typedef i8042_filter_t - i8042 filter callback * @data: Data received by the i8042 controller * @str: Status register of the i8042 controller * @serio: Serio of the i8042 controller * @context: Context pointer associated with this callback * * This represents a i8042 filter callback which can be used with i8042_install_filter() * and i8042_remove_filter() to filter the i8042 input for platform-specific key codes. * * Context: Interrupt context. * Returns: true if the data should be filtered out, false if otherwise. */typedef bool (*i8042_filter_t)(unsigned char data, unsigned char str, struct serio *serio, void *context);
#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(i8042_filter_t filter, void *context);int i8042_remove_filter(i8042_filter_t filter);
#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(i8042_filter_t filter, void *context){ return -ENODEV;}
static inline int i8042_remove_filter(i8042_filter_t filter){ return -ENODEV;}
#endif
#endif