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         bool registered;        /* port has been fully registered with driver core */
  34         bool suspended;         /* port is suspended */
  35
  36
  37         struct serio_device_id id;
  38
  39         spinlock_t lock;                /* protects critical sections from port's interrupt handler */
  40
  41         int (*write)(struct serio *, unsigned char);
  42         int (*open)(struct serio *);
  43         void (*close)(struct serio *);
  44         int (*start)(struct serio *);
  45         void (*stop)(struct serio *);
  46
  47         struct serio *parent, *child;
  48         unsigned int depth;             /* level of nesting in serio hierarchy */
  49
  50         struct serio_driver *drv;       /* accessed from interrupt, must be protected by serio->lock and serio->sem */
  51         struct mutex drv_mutex;         /* protects serio->drv so attributes can pin driver */
  52
  53         struct device dev;
  54
  55         struct list_head node;
  56 };
  57 #define to_serio_port(d)        container_of(d, struct serio, dev)
  58
  59 struct serio_driver {
  60         void *private;
  61         char *description;
  62
  63         struct serio_device_id *id_table;
  64         bool manual_bind;
  65
  66         void (*write_wakeup)(struct serio *);
  67         irqreturn_t (*interrupt)(struct serio *, unsigned char, unsigned int);
  68         int  (*connect)(struct serio *, struct serio_driver *drv);
  69         int  (*reconnect)(struct serio *);
  70         void (*disconnect)(struct serio *);
  71         void (*cleanup)(struct serio *);
  72
  73         struct device_driver driver;
  74 };
  75 #define to_serio_driver(d)      container_of(d, struct serio_driver, driver)
  76
  77 int serio_open(struct serio *serio, struct serio_driver *drv);
  78 void serio_close(struct serio *serio);
  79 void serio_rescan(struct serio *serio);
  80 void serio_reconnect(struct serio *serio);
  81 irqreturn_t serio_interrupt(struct serio *serio, unsigned char data, unsigned int flags);
  82
  83 void __serio_register_port(struct serio *serio, struct module *owner);
  84 static inline void serio_register_port(struct serio *serio)
  85 {
  86         __serio_register_port(serio, THIS_MODULE);
  87 }
  88
  89 void serio_unregister_port(struct serio *serio);
  90 void serio_unregister_child_port(struct serio *serio);
  91
  92 int __serio_register_driver(struct serio_driver *drv, struct module *owner, const char *mod_name);
  93 static inline int __must_check serio_register_driver(struct serio_driver *drv)
  94 {
  95         return __serio_register_driver(drv, THIS_MODULE, KBUILD_MODNAME);
  96 }
  97 void serio_unregister_driver(struct serio_driver *drv);
  98
  99 static inline int serio_write(struct serio *serio, unsigned char data)
 100 {
 101         if (serio->write)
 102                 return serio->write(serio, data);
 103         else
 104                 return -1;
 105 }
 106
 107 static inline void serio_drv_write_wakeup(struct serio *serio)
 108 {
 109         if (serio->drv && serio->drv->write_wakeup)
 110                 serio->drv->write_wakeup(serio);
 111 }
 112
 113 /*
 114  * Use the following functions to manipulate serio's per-port
 115  * driver-specific data.
 116  */
 117 static inline void *serio_get_drvdata(struct serio *serio)
 118 {
 119         return dev_get_drvdata(&serio->dev);
 120 }
 121
 122 static inline void serio_set_drvdata(struct serio *serio, void *data)
 123 {
 124         dev_set_drvdata(&serio->dev, data);
 125 }
 126
 127 /*
 128  * Use the following functions to protect critical sections in
 129  * driver code from port's interrupt handler
 130  */
 131 static inline void serio_pause_rx(struct serio *serio)
 132 {
 133         spin_lock_irq(&serio->lock);
 134 }
 135
 136 static inline void serio_continue_rx(struct serio *serio)
 137 {
 138         spin_unlock_irq(&serio->lock);
 139 }
 140
 141 /*
 142  * Use the following functions to pin serio's driver in process context
 143  */
 144 static inline int serio_pin_driver(struct serio *serio)
 145 {
 146         return mutex_lock_interruptible(&serio->drv_mutex);
 147 }
 148
 149 static inline void serio_pin_driver_uninterruptible(struct serio *serio)
 150 {
 151         mutex_lock(&serio->drv_mutex);
 152 }
 153
 154 static inline void serio_unpin_driver(struct serio *serio)
 155 {
 156         mutex_unlock(&serio->drv_mutex);
 157 }
 158
 159
 160 #endif
 161
 162 /*
 163  * bit masks for use in "interrupt" flags (3rd argument)
 164  */
 165 #define SERIO_TIMEOUT   1
 166 #define SERIO_PARITY    2
 167 #define SERIO_FRAME     4
 168
 169 /*
 170  * Serio types
 171  */
 172 #define SERIO_XT        0x00
 173 #define SERIO_8042      0x01
 174 #define SERIO_RS232     0x02
 175 #define SERIO_HIL_MLC   0x03
 176 #define SERIO_PS_PSTHRU 0x05
 177 #define SERIO_8042_XL   0x06
 178
 179 /*
 180  * Serio protocols
 181  */
 182 #define SERIO_UNKNOWN   0x00
 183 #define SERIO_MSC       0x01
 184 #define SERIO_SUN       0x02
 185 #define SERIO_MS        0x03
 186 #define SERIO_MP        0x04
 187 #define SERIO_MZ        0x05
 188 #define SERIO_MZP       0x06
 189 #define SERIO_MZPP      0x07
 190 #define SERIO_VSXXXAA   0x08
 191 #define SERIO_SUNKBD    0x10
 192 #define SERIO_WARRIOR   0x18
 193 #define SERIO_SPACEORB  0x19
 194 #define SERIO_MAGELLAN  0x1a
 195 #define SERIO_SPACEBALL 0x1b
 196 #define SERIO_GUNZE     0x1c
 197 #define SERIO_IFORCE    0x1d
 198 #define SERIO_STINGER   0x1e
 199 #define SERIO_NEWTON    0x1f
 200 #define SERIO_STOWAWAY  0x20
 201 #define SERIO_H3600     0x21
 202 #define SERIO_PS2SER    0x22
 203 #define SERIO_TWIDKBD   0x23
 204 #define SERIO_TWIDJOY   0x24
 205 #define SERIO_HIL       0x25
 206 #define SERIO_SNES232   0x26
 207 #define SERIO_SEMTECH   0x27
 208 #define SERIO_LKKBD     0x28
 209 #define SERIO_ELO       0x29
 210 #define SERIO_MICROTOUCH        0x30
 211 #define SERIO_PENMOUNT  0x31
 212 #define SERIO_TOUCHRIGHT        0x32
 213 #define SERIO_TOUCHWIN  0x33
 214 #define SERIO_TAOSEVM   0x34
 215 #define SERIO_FUJITSU   0x35
 216 #define SERIO_ZHENHUA   0x36
 217 #define SERIO_INEXIO    0x37
 218 #define SERIO_TOUCHIT213        0x38
 219 #define SERIO_W8001     0x39
 220
 221 #endif