FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/lcdkp_subr.h

     /* $NetBSD: lcdkp_subr.h,v 1.2 2003/06/23 11:01:58 martin Exp $ */
     
     /*
      * Copyright (c) 2002 Dennis I. Chernoivanov
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. The name of the author may not be used to endorse or promote products
     *    derived from this software without specific prior written permission
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     */
    
    #ifndef _DEV_IC_LCDKP_SUBR_H_
    #define _DEV_IC_LCDKP_SUBR_H_
    
    #ifdef _KERNEL
    #include "opt_multiprocessor.h"
    #include <sys/lock.h>
    
    /* Key code translation */
    struct lcdkp_xlate {
            u_int8_t x_keycode;
            u_int8_t x_outcode;
    };
    
    /* Keypad control structure */
    struct lcdkp_chip {
            bus_space_tag_t sc_iot;
            bus_space_handle_t sc_ioh;      /* keypad i/o register */
    
    #define LCDKP_HAS_BUF   0x1
            u_char sc_flags;
            u_int8_t sc_buf;                /* pending character */
    
            u_int8_t sc_knum;               /* number of buttons */
            struct lcdkp_xlate *sc_kpad;    /* recognized keycodes */
    
            u_int8_t (* sc_rread)(bus_space_tag_t, bus_space_handle_t);
    
    #if defined(MULTIPROCESSOR)
            struct simplelock sc_lock;
    #endif
    };
    
    #define lcdkp_dr_read(sc) \
            (sc)->sc_rread((sc)->sc_iot, (sc)->sc_ioh);
    
    #if defined(MULTIPROCESSOR)
    #define lcdkp_lock(sc)          simple_lock(&(sc)->sc_lock)
    #define lcdkp_unlock(sc)        simple_unlock(&(sc)->sc_lock)
    #define lcdkp_lockaddr(sc)      (&(sc)->sc_lock)
    #define lcdkp_lock_init(sc)     simple_lock_init(&(sc)->sc_lock)
    #else
    #define lcdkp_lock(sc)          ((void)0)
    #define lcdkp_unlock(sc)        ((void)0)
    #define lcdkp_lockaddr(sc)      (NULL)
    #define lcdkp_lock_init(sc)     ((void)0)
    #endif
    
    void lcdkp_attach_subr(struct lcdkp_chip *);
    int  lcdkp_scankey(struct lcdkp_chip *);
    int  lcdkp_readkey(struct lcdkp_chip *, u_int8_t *);
    
    #endif /* _KERNEL */
    
    #endif /* _DEV_IC_LCDKP_SUBR_H_ */

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