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967c9ef9b8
Some hardware (such as Dell laptops) signal a variety of events through the i8042 controller, even if these don't map to keyboard events. Add support for drivers to filter the i8042 event stream in order to respond to these events and (if appropriate) block them from entering the input stream. Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
81 lines
1.7 KiB
C
81 lines
1.7 KiB
C
#ifndef _LINUX_I8042_H
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#define _LINUX_I8042_H
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/*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*/
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#include <linux/types.h>
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/*
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* Standard commands.
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*/
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#define I8042_CMD_CTL_RCTR 0x0120
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#define I8042_CMD_CTL_WCTR 0x1060
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#define I8042_CMD_CTL_TEST 0x01aa
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#define I8042_CMD_KBD_DISABLE 0x00ad
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#define I8042_CMD_KBD_ENABLE 0x00ae
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#define I8042_CMD_KBD_TEST 0x01ab
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#define I8042_CMD_KBD_LOOP 0x11d2
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#define I8042_CMD_AUX_DISABLE 0x00a7
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#define I8042_CMD_AUX_ENABLE 0x00a8
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#define I8042_CMD_AUX_TEST 0x01a9
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#define I8042_CMD_AUX_SEND 0x10d4
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#define I8042_CMD_AUX_LOOP 0x11d3
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#define I8042_CMD_MUX_PFX 0x0090
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#define I8042_CMD_MUX_SEND 0x1090
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struct serio;
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#if defined(CONFIG_SERIO_I8042) || defined(CONFIG_SERIO_I8042_MODULE)
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void i8042_lock_chip(void);
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void i8042_unlock_chip(void);
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int i8042_command(unsigned char *param, int command);
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bool i8042_check_port_owner(const struct serio *);
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int i8042_install_filter(bool (*filter)(unsigned char data, unsigned char str,
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struct serio *serio));
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int i8042_remove_filter(bool (*filter)(unsigned char data, unsigned char str,
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struct serio *serio));
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#else
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void i8042_lock_chip(void)
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{
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}
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void i8042_unlock_chip(void)
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{
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}
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int i8042_command(unsigned char *param, int command)
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{
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return -ENODEV;
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}
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bool i8042_check_port_owner(const struct serio *serio)
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{
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return false;
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}
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int i8042_install_filter(bool (*filter)(unsigned char data, unsigned char str,
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struct serio *serio))
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{
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return -ENODEV;
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}
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int i8042_remove_filter(bool (*filter)(unsigned char data, unsigned char str,
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struct serio *serio))
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{
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return -ENODEV;
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}
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#endif
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#endif
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