linux/include/linux/serio.h
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   1#ifndef _SERIO_H
   2#define _SERIO_H
   3
   4/*
   5 * Copyright (C) 1999-2002 Vojtech Pavlik
   6*
   7 * This program is free software; you can redistribute it and/or modify it
   8 * under the terms of the GNU General Public License version 2 as published by
   9 * the Free Software Foundation.
  10 */
  11
  12#include <linux/ioctl.h>
  13
  14#define SPIOCSTYPE      _IOW('q', 0x01, unsigned long)
  15
  16#ifdef __KERNEL__
  17
  18#include <linux/types.h>
  19#include <linux/interrupt.h>
  20#include <linux/list.h>
  21#include <linux/spinlock.h>
  22#include <linux/mutex.h>
  23#include <linux/device.h>
  24#include <linux/mod_devicetable.h>
  25
  26struct serio {
  27        void *port_data;
  28
  29        char name[32];
  30        char phys[32];
  31
  32        bool manual_bind;
  33
  34        struct serio_device_id id;
  35
  36        spinlock_t lock;                /* protects critical sections from port's interrupt handler */
  37
  38        int (*write)(struct serio *, unsigned char);
  39        int (*open)(struct serio *);
  40        void (*close)(struct serio *);
  41        int (*start)(struct serio *);
  42        void (*stop)(struct serio *);
  43
  44        struct serio *parent;
  45        struct list_head child_node;    /* Entry in parent->children list */
  46        struct list_head children;
  47        unsigned int depth;             /* level of nesting in serio hierarchy */
  48
  49        struct serio_driver *drv;       /* accessed from interrupt, must be protected by serio->lock and serio->sem */
  50        struct mutex drv_mutex;         /* protects serio->drv so attributes can pin driver */
  51
  52        struct device dev;
  53
  54        struct list_head node;
  55};
  56#define to_serio_port(d)        container_of(d, struct serio, dev)
  57
  58struct serio_driver {
  59        const char *description;
  60
  61        const struct serio_device_id *id_table;
  62        bool manual_bind;
  63
  64        void (*write_wakeup)(struct serio *);
  65        irqreturn_t (*interrupt)(struct serio *, unsigned char, unsigned int);
  66        int  (*connect)(struct serio *, struct serio_driver *drv);
  67        int  (*reconnect)(struct serio *);
  68        void (*disconnect)(struct serio *);
  69        void (*cleanup)(struct serio *);
  70
  71        struct device_driver driver;
  72};
  73#define to_serio_driver(d)      container_of(d, struct serio_driver, driver)
  74
  75int serio_open(struct serio *serio, struct serio_driver *drv);
  76void serio_close(struct serio *serio);
  77void serio_rescan(struct serio *serio);
  78void serio_reconnect(struct serio *serio);
  79irqreturn_t serio_interrupt(struct serio *serio, unsigned char data, unsigned int flags);
  80
  81void __serio_register_port(struct serio *serio, struct module *owner);
  82
  83/* use a define to avoid include chaining to get THIS_MODULE */
  84#define serio_register_port(serio) \
  85        __serio_register_port(serio, THIS_MODULE)
  86
  87void serio_unregister_port(struct serio *serio);
  88void serio_unregister_child_port(struct serio *serio);
  89
  90int __must_check __serio_register_driver(struct serio_driver *drv,
  91                                struct module *owner, const char *mod_name);
  92
  93/* use a define to avoid include chaining to get THIS_MODULE & friends */
  94#define serio_register_driver(drv) \
  95        __serio_register_driver(drv, THIS_MODULE, KBUILD_MODNAME)
  96
  97void serio_unregister_driver(struct serio_driver *drv);
  98
  99/**
 100 * module_serio_driver() - Helper macro for registering a serio driver
 101 * @__serio_driver: serio_driver struct
 102 *
 103 * Helper macro for serio drivers which do not do anything special in
 104 * module init/exit. This eliminates a lot of boilerplate. Each module
 105 * may only use this macro once, and calling it replaces module_init()
 106 * and module_exit().
 107 */
 108#define module_serio_driver(__serio_driver) \
 109        module_driver(__serio_driver, serio_register_driver, \
 110                       serio_unregister_driver)
 111
 112static inline int serio_write(struct serio *serio, unsigned char data)
 113{
 114        if (serio->write)
 115                return serio->write(serio, data);
 116        else
 117                return -1;
 118}
 119
 120static inline void serio_drv_write_wakeup(struct serio *serio)
 121{
 122        if (serio->drv && serio->drv->write_wakeup)
 123                serio->drv->write_wakeup(serio);
 124}
 125
 126/*
 127 * Use the following functions to manipulate serio's per-port
 128 * driver-specific data.
 129 */
 130static inline void *serio_get_drvdata(struct serio *serio)
 131{
 132        return dev_get_drvdata(&serio->dev);
 133}
 134
 135static inline void serio_set_drvdata(struct serio *serio, void *data)
 136{
 137        dev_set_drvdata(&serio->dev, data);
 138}
 139
 140/*
 141 * Use the following functions to protect critical sections in
 142 * driver code from port's interrupt handler
 143 */
 144static inline void serio_pause_rx(struct serio *serio)
 145{
 146        spin_lock_irq(&serio->lock);
 147}
 148
 149static inline void serio_continue_rx(struct serio *serio)
 150{
 151        spin_unlock_irq(&serio->lock);
 152}
 153
 154#endif
 155
 156/*
 157 * bit masks for use in "interrupt" flags (3rd argument)
 158 */
 159#define SERIO_TIMEOUT   1
 160#define SERIO_PARITY    2
 161#define SERIO_FRAME     4
 162
 163/*
 164 * Serio types
 165 */
 166#define SERIO_XT        0x00
 167#define SERIO_8042      0x01
 168#define SERIO_RS232     0x02
 169#define SERIO_HIL_MLC   0x03
 170#define SERIO_PS_PSTHRU 0x05
 171#define SERIO_8042_XL   0x06
 172
 173/*
 174 * Serio protocols
 175 */
 176#define SERIO_UNKNOWN   0x00
 177#define SERIO_MSC       0x01
 178#define SERIO_SUN       0x02
 179#define SERIO_MS        0x03
 180#define SERIO_MP        0x04
 181#define SERIO_MZ        0x05
 182#define SERIO_MZP       0x06
 183#define SERIO_MZPP      0x07
 184#define SERIO_VSXXXAA   0x08
 185#define SERIO_SUNKBD    0x10
 186#define SERIO_WARRIOR   0x18
 187#define SERIO_SPACEORB  0x19
 188#define SERIO_MAGELLAN  0x1a
 189#define SERIO_SPACEBALL 0x1b
 190#define SERIO_GUNZE     0x1c
 191#define SERIO_IFORCE    0x1d
 192#define SERIO_STINGER   0x1e
 193#define SERIO_NEWTON    0x1f
 194#define SERIO_STOWAWAY  0x20
 195#define SERIO_H3600     0x21
 196#define SERIO_PS2SER    0x22
 197#define SERIO_TWIDKBD   0x23
 198#define SERIO_TWIDJOY   0x24
 199#define SERIO_HIL       0x25
 200#define SERIO_SNES232   0x26
 201#define SERIO_SEMTECH   0x27
 202#define SERIO_LKKBD     0x28
 203#define SERIO_ELO       0x29
 204#define SERIO_MICROTOUCH        0x30
 205#define SERIO_PENMOUNT  0x31
 206#define SERIO_TOUCHRIGHT        0x32
 207#define SERIO_TOUCHWIN  0x33
 208#define SERIO_TAOSEVM   0x34
 209#define SERIO_FUJITSU   0x35
 210#define SERIO_ZHENHUA   0x36
 211#define SERIO_INEXIO    0x37
 212#define SERIO_TOUCHIT213        0x38
 213#define SERIO_W8001     0x39
 214#define SERIO_DYNAPRO   0x3a
 215#define SERIO_HAMPSHIRE 0x3b
 216#define SERIO_PS2MULT   0x3c
 217#define SERIO_TSC40     0x3d
 218
 219#endif
 220
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