The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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

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    1 /* $NetBSD: lcdkp_subr.h,v 1.3 2011/05/14 02:58:27 rmind Exp $ */
    2 
    3 /*
    4  * Copyright (c) 2002 Dennis I. Chernoivanov
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  * 3. The name of the author may not be used to endorse or promote products
   16  *    derived from this software without specific prior written permission
   17  *
   18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   28  */
   29 
   30 #ifndef _DEV_IC_LCDKP_SUBR_H_
   31 #define _DEV_IC_LCDKP_SUBR_H_
   32 
   33 #ifdef _KERNEL
   34 
   35 /* Key code translation */
   36 struct lcdkp_xlate {
   37         u_int8_t x_keycode;
   38         u_int8_t x_outcode;
   39 };
   40 
   41 /* Keypad control structure */
   42 struct lcdkp_chip {
   43         bus_space_tag_t sc_iot;
   44         bus_space_handle_t sc_ioh;      /* keypad i/o register */
   45 
   46 #define LCDKP_HAS_BUF   0x1
   47         u_char sc_flags;
   48         u_int8_t sc_buf;                /* pending character */
   49 
   50         u_int8_t sc_knum;               /* number of buttons */
   51         struct lcdkp_xlate *sc_kpad;    /* recognized keycodes */
   52 
   53         u_int8_t (* sc_rread)(bus_space_tag_t, bus_space_handle_t);
   54 
   55         kmutex_t sc_lock;
   56 };
   57 
   58 #define lcdkp_dr_read(sc) \
   59         (sc)->sc_rread((sc)->sc_iot, (sc)->sc_ioh);
   60 
   61 void lcdkp_attach_subr(struct lcdkp_chip *);
   62 int  lcdkp_scankey(struct lcdkp_chip *);
   63 int  lcdkp_readkey(struct lcdkp_chip *, u_int8_t *);
   64 
   65 #endif /* _KERNEL */
   66 
   67 #endif /* _DEV_IC_LCDKP_SUBR_H_ */

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