include/linux/serio.h

   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
  26 struct 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
  58 struct 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
  75 int serio_open(struct serio *serio, struct serio_driver *drv);
  76 void serio_close(struct serio *serio);
  77 void serio_rescan(struct serio *serio);
  78 void serio_reconnect(struct serio *serio);
  79 irqreturn_t serio_interrupt(struct serio *serio, unsigned char data, unsigned int flags);
  80
  81 void __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
  87 void serio_unregister_port(struct serio *serio);
  88 void serio_unregister_child_port(struct serio *serio);
  89
  90 int __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
  97 void 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
 112 static 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
 120 static 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  */
 130 static inline void *serio_get_drvdata(struct serio *serio)
 131 {
 132         return dev_get_drvdata(&serio->dev);
 133 }
 134
 135 static 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  */
 144 static inline void serio_pause_rx(struct serio *serio)
 145 {
 146         spin_lock_irq(&serio->lock);
 147 }
 148
 149 static 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