omap-uwire.h

来自「Linux Kernel 2.6.9 for OMAP1710」· C头文件 代码 · 共 53 行

/*
 * BRIEF MODULE DESCRIPTION
 *
 *	uWire interface driver for the OMAP Platform
 *
 * Copyright 2003 MontaVista Software Inc.
 * Author: MontaVista Software, Inc.
 *	   [e-mail]
 *
 * Ported to 2.6 uwire interface.
 * Copyright (C) 2004 Texas Instruments.
 *
 * Generalization patches by Juha Yrjölä <[e-mail]>
 *
 *  This program is free software; you can redistribute	 it and/or modify it
 *  under  the terms of	 the GNU General  Public License as published by the
 *  Free Software Foundation;  either version 2 of the	License, or (at your
 *  option) any later version.
 *
 *  THIS  SOFTWARE  IS PROVIDED	  ``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.
 *
 *  You should have received a copy of the  GNU General Public License along
 *  with this program; if not, write  to the Free Software Foundation, Inc.,
 *  675 Mass Ave, Cambridge, MA 02139, USA.
 */

#ifndef __ARCH_OMAP_UWIRE_H
#define __ARCH_OMAP_UWIRE_H

/*
 * uWire for OMAP declarations
 */
extern void omap_uwire_configure_mode(u8 cs, u8 edge_rd, u8 edge_wr, u8 lvl,
				      u8 frq, u8 chk);

 /* uWire data trasfer function:  cs - chip select, data - data to be trasmited */
 /*                               trans_size - number of bits to be transmited */
 /*                               rec_size - number of bits to be recieved */
 /*                               rec_buf  - buffer for received data if rec_size != 0 */
 /* NOTE: Make sure you don't call this from an interrupt handler! */
extern int omap_uwire_data_transfer(u8 cs, u16 data, u8 trans_size,
				    u8 rec_size, u16 * rec_buf);
#endif