2 * Copyright (C) 1999-2002 Vojtech Pavlik
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License version 2 as published by
6 * the Free Software Foundation.
12 #include <linux/types.h>
13 #include <linux/interrupt.h>
14 #include <linux/list.h>
15 #include <linux/spinlock.h>
16 #include <linux/mutex.h>
17 #include <linux/device.h>
18 #include <linux/mod_devicetable.h>
19 #include <uapi/linux/serio.h>
21 extern struct bus_type serio_bus;
28 char firmware_id[128];
32 struct serio_device_id id;
34 spinlock_t lock; /* protects critical sections from port's interrupt handler */
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 *);
43 struct list_head child_node; /* Entry in parent->children list */
44 struct list_head children;
45 unsigned int depth; /* level of nesting in serio hierarchy */
47 struct serio_driver *drv; /* accessed from interrupt, must be protected by serio->lock and serio->sem */
48 struct mutex drv_mutex; /* protects serio->drv so attributes can pin driver */
52 struct list_head node;
54 #define to_serio_port(d) container_of(d, struct serio, dev)
57 const char *description;
59 const struct serio_device_id *id_table;
62 void (*write_wakeup)(struct serio *);
63 irqreturn_t (*interrupt)(struct serio *, unsigned char, unsigned int);
64 int (*connect)(struct serio *, struct serio_driver *drv);
65 int (*reconnect)(struct serio *);
66 void (*disconnect)(struct serio *);
67 void (*cleanup)(struct serio *);
69 struct device_driver driver;
71 #define to_serio_driver(d) container_of(d, struct serio_driver, driver)
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);
79 void __serio_register_port(struct serio *serio, struct module *owner);
81 /* use a define to avoid include chaining to get THIS_MODULE */
82 #define serio_register_port(serio) \
83 __serio_register_port(serio, THIS_MODULE)
85 void serio_unregister_port(struct serio *serio);
86 void serio_unregister_child_port(struct serio *serio);
88 int __must_check __serio_register_driver(struct serio_driver *drv,
89 struct module *owner, const char *mod_name);
91 /* use a define to avoid include chaining to get THIS_MODULE & friends */
92 #define serio_register_driver(drv) \
93 __serio_register_driver(drv, THIS_MODULE, KBUILD_MODNAME)
95 void serio_unregister_driver(struct serio_driver *drv);
98 * module_serio_driver() - Helper macro for registering a serio driver
99 * @__serio_driver: serio_driver struct
101 * Helper macro for serio drivers which do not do anything special in
102 * module init/exit. This eliminates a lot of boilerplate. Each module
103 * may only use this macro once, and calling it replaces module_init()
106 #define module_serio_driver(__serio_driver) \
107 module_driver(__serio_driver, serio_register_driver, \
108 serio_unregister_driver)
110 static inline int serio_write(struct serio *serio, unsigned char data)
113 return serio->write(serio, data);
118 static inline void serio_drv_write_wakeup(struct serio *serio)
120 if (serio->drv && serio->drv->write_wakeup)
121 serio->drv->write_wakeup(serio);
125 * Use the following functions to manipulate serio's per-port
126 * driver-specific data.
128 static inline void *serio_get_drvdata(struct serio *serio)
130 return dev_get_drvdata(&serio->dev);
133 static inline void serio_set_drvdata(struct serio *serio, void *data)
135 dev_set_drvdata(&serio->dev, data);
139 * Use the following functions to protect critical sections in
140 * driver code from port's interrupt handler
142 static inline void serio_pause_rx(struct serio *serio)
144 spin_lock_irq(&serio->lock);
147 static inline void serio_continue_rx(struct serio *serio)
149 spin_unlock_irq(&serio->lock);