1. 根目录:
2. drivers
3. staging
4. speakup
5. spk_priv.h

/* spk_priv.h
   review functions for the speakup screen review package.
   originally written by: Kirk Reiser and Andy Berdan.

  extensively modified by David Borowski.

    Copyright (C) 1998  Kirk Reiser.
    Copyright (C) 2003  David Borowski.

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/
#ifndef _SPEAKUP_PRIVATE_H
#define _SPEAKUP_PRIVATE_H

#include "spk_types.h"
#include "spk_priv_keyinfo.h"

#ifndef pr_warn
#define pr_warn(fmt, arg...) printk(KERN_WARNING fmt, ##arg)
#endif

#define V_LAST_VAR { MAXVARS }
#define SPACE 0x20
#define SYNTH_CHECK 20030716 /* today's date ought to do for check value */
/* synth flags, for odd synths */
#define SF_DEC 1 /* to fiddle puncs in alpha strings so it doesn't spell */
#ifdef MODULE
#define SYNTH_START 1
#else
#define SYNTH_START 0
#endif

#define KT_SPKUP 15

extern const struct old_serial_port *spk_serial_init(int index);
extern void stop_serial_interrupt(void);
extern int wait_for_xmitr(void);
extern unsigned char spk_serial_in(void);
extern unsigned char spk_serial_in_nowait(void);
extern int spk_serial_out(const char ch);
extern void spk_serial_release(void);

extern char synth_buffer_getc(void);
extern char synth_buffer_peek(void);
extern int synth_buffer_empty(void);
extern struct var_t *get_var(enum var_id_t var_id);
extern ssize_t spk_var_show(struct kobject *kobj, struct kobj_attribute *attr,
	char *buf);
extern ssize_t spk_var_store(struct kobject *kobj, struct kobj_attribute *attr,
	const char *buf, size_t count);

extern int serial_synth_probe(struct spk_synth *synth);
extern const char *spk_synth_immediate(struct spk_synth *synth, const char *buff);
extern void spk_do_catch_up(struct spk_synth *synth);
extern void spk_synth_flush(struct spk_synth *synth);
extern int spk_synth_is_alive_nop(struct spk_synth *synth);
extern int spk_synth_is_alive_restart(struct spk_synth *synth);
extern void synth_printf(const char *buf, ...);
extern int synth_request_region(u_long, u_long);
extern int synth_release_region(u_long, u_long);
extern int synth_add(struct spk_synth *in_synth);
extern void synth_remove(struct spk_synth *in_synth);

extern struct speakup_info_t speakup_info;

extern struct var_t synth_time_vars[];

/* Protect the whole speakup machinery, must be taken at each kernel->speakup
 * transition and released at all corresponding speakup->kernel transitions
 * (flags must be the same variable between lock/trylock and unlock).
 *
 * The progression thread only interferes with the speakup machinery through
 * the synth buffer, and so only needs to take the lock while tinkering with
 * it.
 */
/* Speakup needs to disable the keyboard IRQ, hence _irqsave/restore */
#define spk_lock(flags) spin_lock_irqsave(&speakup_info.spinlock, flags)
#define spk_trylock(flags) spin_trylock_irqsave(&speakup_info.spinlock, flags)
#define spk_unlock(flags) spin_unlock_irqrestore(&speakup_info.spinlock, flags)

#endif