text: /*-
   * Copyright (C) 2005 TAKAHASHI Yoshihiro. 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.
   *
   * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``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 AUTHOR OR CONTRIBUTORS 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.
   *
   * $FreeBSD: release/9.1.0/sys/mips/include/ppireg.h 202175 2010-01-12 21:36:08Z imp $
   */
  
  #ifndef _MACHINE_PPIREG_H_
  #define _MACHINE_PPIREG_H_
  
  #ifdef _KERNEL
  
  #define	IO_PPI		0x61	/* Programmable Peripheral Interface */
  
  /*
   * PPI speaker control values
   */
  
  #define	PIT_ENABLETMR2	0x01	/* Enable timer/counter 2 */
  #define	PIT_SPKRDATA	0x02	/* Direct to speaker */
  
  #define	PIT_SPKR	(PIT_ENABLETMR2 | PIT_SPKRDATA)
  
  #define	ppi_spkr_on()	outb(IO_PPI, inb(IO_PPI) | PIT_SPKR)
  #define	ppi_spkr_off()	outb(IO_PPI, inb(IO_PPI) & ~PIT_SPKR)
  
  #endif /* _KERNEL */
  
  #endif /* _MACHINE_PPIREG_H_ */
  