1/* ********************************************************************* 2 * Broadcom Common Firmware Environment (CFE) 3 * 4 * PC-style keyboard interface File: KBD_SUBR.C 5 * 6 * This module converts a stream of scancodes into ASCII 7 * characters. The scan codes come from a PC-style 8 * keyboard. 9 * 10 * Author: Mitch Lichtenberg 11 * 12 ********************************************************************* 13 * 14 * Copyright 2000,2001,2002,2003 15 * Broadcom Corporation. All rights reserved. 16 * 17 * This software is furnished under license and may be used and 18 * copied only in accordance with the following terms and 19 * conditions. Subject to these conditions, you may download, 20 * copy, install, use, modify and distribute modified or unmodified 21 * copies of this software in source and/or binary form. No title 22 * or ownership is transferred hereby. 23 * 24 * 1) Any source code used, modified or distributed must reproduce 25 * and retain this copyright notice and list of conditions 26 * as they appear in the source file. 27 * 28 * 2) No right is granted to use any trade name, trademark, or 29 * logo of Broadcom Corporation. The "Broadcom Corporation" 30 * name may not be used to endorse or promote products derived 31 * from this software without the prior written permission of 32 * Broadcom Corporation. 33 * 34 * 3) THIS SOFTWARE IS PROVIDED "AS-IS" AND ANY EXPRESS OR 35 * IMPLIED WARRANTIES, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED 36 * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR 37 * PURPOSE, OR NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT 38 * SHALL BROADCOM BE LIABLE FOR ANY DAMAGES WHATSOEVER, AND IN 39 * PARTICULAR, BROADCOM SHALL NOT BE LIABLE FOR DIRECT, INDIRECT, 40 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 41 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE 42 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 43 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 44 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR 45 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE), EVEN IF ADVISED OF 46 * THE POSSIBILITY OF SUCH DAMAGE. 47 ********************************************************************* */ 48 49 50/* ********************************************************************* 51 * Constants 52 ********************************************************************* */ 53 54#define KEYQUEUELEN 16 55 56#define KBDCMD_RESET 0xFF 57#define KBDCMD_SETLEDS 0xED 58 59/* ********************************************************************* 60 * Structures 61 ********************************************************************* */ 62 63typedef struct keystate_s { 64 int ks_shiftflags; 65 char ks_queue[KEYQUEUELEN]; 66 int ks_head; 67 int ks_tail; 68 int (*ks_setleds)(struct keystate_s *ks,int leds); 69 void *ks_ref; 70} keystate_t; 71 72/* ********************************************************************* 73 * Prototypes 74 ********************************************************************* */ 75 76int kbd_read(keystate_t *ks); 77int kbd_inpstat(keystate_t *ks); 78void kbd_init(keystate_t *ks,int (*setleds)(keystate_t *,int),void *ref); 79void kbd_doscan(keystate_t *ks,uint8_t scan); 80#define kbd_getref(x) ((x)->ks_ref) 81 82 83