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/interrupt.h>
  19 #include <linux/list.h>
  20 #include <linux/spinlock.h>
  21 #include <linux/device.h>
  22 #include <linux/mod_devicetable.h>
  23
  24 struct serio {
  25         void *port_data;
  26
  27         char name[32];
  28         char phys[32];
  29
  30         unsigned int manual_bind;
  31
  32         struct serio_device_id id;
  33
  34         spinlock_t lock;                /* protects critical sections from port's interrupt handler */
  35
  36         int (*write)(struct serio *, unsigned char);
  37         int (*open)(struct serio *);
  38         void (*close)(struct serio *);
  39         int (*start)(struct serio *);
  40         void (*stop)(struct serio *);
  41
  42         struct serio *parent, *child;
  43
  44         struct serio_driver *drv;       /* accessed from interrupt, must be protected by serio->lock and serio->sem */
  45         struct semaphore drv_sem;       /* protects serio->drv so attributes can pin driver */
  46
  47         struct device dev;
  48         unsigned int registered;        /* port has been fully registered with driver core */
  49
  50         struct list_head node;
  51 };
  52 #define to_serio_port(d)        container_of(d, struct serio, dev)
  53
  54 struct serio_driver {
  55         void *private;
  56         char *description;
  57
  58         struct serio_device_id *id_table;
  59         unsigned int manual_bind;
  60
  61         void (*write_wakeup)(struct serio *);
  62         irqreturn_t (*interrupt)(struct serio *, unsigned char,
  63                         unsigned int, struct pt_regs *);
  64         int  (*connect)(struct serio *, struct serio_driver *drv);
  65         int  (*reconnect)(struct serio *);
  66         void (*disconnect)(struct serio *);
  67         void (*cleanup)(struct serio *);
  68
  69         struct device_driver driver;
  70 };
  71 #define to_serio_driver(d)      container_of(d, struct serio_driver, driver)
  72
  73 int serio_open(struct serio *serio, struct serio_driver *drv);
  74 void serio_close(struct serio *serio);
  75 void serio_rescan(struct serio *serio);
  76 void serio_reconnect(struct serio *serio);
  77 irqreturn_t serio_interrupt(struct serio *serio, unsigned char data, unsigned int flags, struct pt_regs *regs);
  78
  79 void __serio_register_port(struct serio *serio, struct module *owner);
  80 static inline void serio_register_port(struct serio *serio)
  81 {
  82         __serio_register_port(serio, THIS_MODULE);
  83 }
  84
  85 void serio_unregister_port(struct serio *serio);
  86 void serio_unregister_child_port(struct serio *serio);
  87 void __serio_unregister_port_delayed(struct serio *serio, struct module *owner);
  88 static inline void serio_unregister_port_delayed(struct serio *serio)
  89 {
  90         __serio_unregister_port_delayed(serio, THIS_MODULE);
  91 }
  92
  93 void __serio_register_driver(struct serio_driver *drv, struct module *owner);
  94 static inline void serio_register_driver(struct serio_driver *drv)
  95 {
  96         __serio_register_driver(drv, THIS_MODULE);
  97 }
  98
  99 void serio_unregister_driver(struct serio_driver *drv);
 100
 101 static inline int serio_write(struct serio *serio, unsigned char data)
 102 {
 103         if (serio->write)
 104                 return serio->write(serio, data);
 105         else
 106                 return -1;
 107 }
 108
 109 static inline void serio_drv_write_wakeup(struct serio *serio)
 110 {
 111         if (serio->drv && serio->drv->write_wakeup)
 112                 serio->drv->write_wakeup(serio);
 113 }
 114
 115 static inline void serio_cleanup(struct serio *serio)
 116 {
 117         if (serio->drv && serio->drv->cleanup)
 118                 serio->drv->cleanup(serio);
 119 }
 120
 121 /*
 122  * Use the following fucntions to manipulate serio's per-port
 123  * driver-specific data.
 124  */
 125 static inline void *serio_get_drvdata(struct serio *serio)
 126 {
 127         return dev_get_drvdata(&serio->dev);
 128 }
 129
 130 static inline void serio_set_drvdata(struct serio *serio, void *data)
 131 {
 132         dev_set_drvdata(&serio->dev, data);
 133 }
 134
 135 /*
 136  * Use the following fucntions to protect critical sections in
 137  * driver code from port's interrupt handler
 138  */
 139 static inline void serio_pause_rx(struct serio *serio)
 140 {
 141         spin_lock_irq(&serio->lock);
 142 }
 143
 144 static inline void serio_continue_rx(struct serio *serio)
 145 {
 146         spin_unlock_irq(&serio->lock);
 147 }
 148
 149 /*
 150  * Use the following fucntions to pin serio's driver in process context
 151  */
 152 static inline int serio_pin_driver(struct serio *serio)
 153 {
 154         return down_interruptible(&serio->drv_sem);
 155 }
 156
 157 static inline void serio_pin_driver_uninterruptible(struct serio *serio)
 158 {
 159         down(&serio->drv_sem);
 160 }
 161
 162 static inline void serio_unpin_driver(struct serio *serio)
 163 {
 164         up(&serio->drv_sem);
 165 }
 166
 167
 168 #endif
 169
 170 /*
 171  * bit masks for use in "interrupt" flags (3rd argument)
 172  */
 173 #define SERIO_TIMEOUT   1
 174 #define SERIO_PARITY    2
 175 #define SERIO_FRAME     4
 176
 177 /*
 178  * Serio types
 179  */
 180 #define SERIO_XT        0x00
 181 #define SERIO_8042      0x01
 182 #define SERIO_RS232     0x02
 183 #define SERIO_HIL_MLC   0x03
 184 #define SERIO_PS_PSTHRU 0x05
 185 #define SERIO_8042_XL   0x06
 186
 187 /*
 188  * Serio types
 189  */
 190 #define SERIO_UNKNOWN   0x00
 191 #define SERIO_MSC       0x01
 192 #define SERIO_SUN       0x02
 193 #define SERIO_MS        0x03
 194 #define SERIO_MP        0x04
 195 #define SERIO_MZ        0x05
 196 #define SERIO_MZP       0x06
 197 #define SERIO_MZPP      0x07
 198 #define SERIO_VSXXXAA   0x08
 199 #define SERIO_SUNKBD    0x10
 200 #define SERIO_WARRIOR   0x18
 201 #define SERIO_SPACEORB  0x19
 202 #define SERIO_MAGELLAN  0x1a
 203 #define SERIO_SPACEBALL 0x1b
 204 #define SERIO_GUNZE     0x1c
 205 #define SERIO_IFORCE    0x1d
 206 #define SERIO_STINGER   0x1e
 207 #define SERIO_NEWTON    0x1f
 208 #define SERIO_STOWAWAY  0x20
 209 #define SERIO_H3600     0x21
 210 #define SERIO_PS2SER    0x22
 211 #define SERIO_TWIDKBD   0x23
 212 #define SERIO_TWIDJOY   0x24
 213 #define SERIO_HIL       0x25
 214 #define SERIO_SNES232   0x26
 215 #define SERIO_SEMTECH   0x27
 216 #define SERIO_LKKBD     0x28
 217 #define SERIO_ELO       0x29
 218 #define SERIO_MICROTOUCH        0x30
 219
 220 #endif