usr.sbin/btattach/init_bcm2035.c

   1 /*      $NetBSD: init_bcm2035.c,v 1.1 2008/04/15 11:17:48 plunky Exp $  */
   2
   3 /*-
   4  * Copyright (c) 2008 Iain Hibbert
   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  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26  */
  27
  28 /*
  29  * init information in this file gleaned from hciattach(8)
  30  * command from BlueZ for Linux - see http://www.bluez.org/
  31  */
  32
  33 #include <sys/cdefs.h>
  34 __RCSID("$NetBSD: init_bcm2035.c,v 1.1 2008/04/15 11:17:48 plunky Exp $");
  35
  36 #include <bluetooth.h>
  37 #include <err.h>
  38 #include <errno.h>
  39 #include <stdlib.h>
  40 #include <termios.h>
  41
  42 #include "btattach.h"
  43
  44 #define HCI_CMD_BCM2035_SET_UART_BAUD_RATE      \
  45         HCI_OPCODE(HCI_OGF_VENDOR, 0x018)
  46
  47 #define HCI_CMD_BCM2035_SET_BDADDR              \
  48         HCI_OPCODE(HCI_OGF_VENDOR, 0x001)
  49
  50 void
  51 init_bcm2035(int fd, unsigned int speed)
  52 {
  53         uint16_t rate;
  54
  55         uart_send_cmd(fd, HCI_CMD_RESET, NULL, 0);
  56
  57         uart_recv_cc(fd, HCI_CMD_RESET, NULL, 0);
  58         /* assume it succeeded? */
  59
  60         /* can also set the bdaddr */
  61
  62         switch(speed) {
  63         case B57600:    rate = 0xe600;  break;
  64         case B115200:   rate = 0xf300;  break;
  65         case B230400:   rate = 0xfa22;  break;
  66         case B460800:   rate = 0xfd22;  break;
  67         case B921600:   rate = 0xff55;  break;
  68         default:
  69                 errx(EXIT_FAILURE, "invalid speed for bcm2035: %u\n", speed);
  70         };
  71
  72         rate = htole16(rate);
  73         uart_send_cmd(fd, HCI_CMD_BCM2035_SET_UART_BAUD_RATE, &rate, sizeof(rate));
  74         uart_recv_cc(fd, HCI_CMD_BCM2035_SET_UART_BAUD_RATE, NULL, 0);
  75         /* assume it succeeded? */
  76 }