/*      $NetBSD: lm75reg.h,v 1.5 2016/01/03 17:28:33 jdc Exp $  */

/*
* Copyright (c) 2003 Wasabi Systems, Inc.
* All rights reserved.
*
* Written by Jason R. Thorpe for Wasabi Systems, Inc.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
*    must display the following acknowledgement:
*      This product includes software developed for the NetBSD Project by
*      Wasabi Systems, Inc.
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
*    or promote products derived from this software without specific prior
*    written permission.
*
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
* 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.
*/

#ifndef _DEV_I2C_LM75REG_H_
#define _DEV_I2C_LM75REG_H_

/*
* LM75 temperature sensor I2C address:
*
*      100 1xxx
*/
#define LM75_ADDRMASK           0x3f8
#define LM75_ADDR               0x48
#define LM77_ADDRMASK           0x3fc
#define LM77_ADDR               0x48

/*
* Temperature on the LM75 is represented by a 9-bit two's complement
* integer in steps of 0.5C.  The following examples are taken from
* the LM75 data sheet:
*
*      +125C   0 1111 1010     0x0fa
*      +25C    0 0011 0010     0x032
*      +0.5C   0 0000 0001     0x001
*      0C      0 0000 0000     0x000
*      -0.5C   1 1111 1111     0x1ff
*      -25C    1 1100 1110     0x1ce
*      -55C    1 1001 0010     0x192
*/

#define LM75_REG_TEMP                   0x00
#define LM75_REG_CONFIG                 0x01
#define LM75_REG_THYST_SET_POINT        0x02
#define LM75_REG_TOS_SET_POINT          0x03
#define LM75_REG_ID                     0x07    /* LM75A only */

#define LM77_REG_TCRIT_SET_POINT        0x03
#define LM77_REG_TLOW_SET_POINT         0x04
#define LM77_REG_THIGH_SET_POINT        0x05


#define LM75_TEMP_LEN                   2       /* 2 data bytes */

#define LM75_CONFIG_SHUTDOWN            0x01
#define LM75_CONFIG_CMPINT              0x02
#define LM75_CONFIG_OSPOLARITY          0x04
#define LM75_CONFIG_FAULT_QUEUE_1       (0 << 3)
#define LM75_CONFIG_FAULT_QUEUE_2       (1 << 3)
#define LM75_CONFIG_FAULT_QUEUE_4       (2 << 3)
#define LM75_CONFIG_FAULT_QUEUE_6       (3 << 3)

#define LM77_CONFIG_TCRITAPOLARITY      0x04
#define LM77_CONFIG_INTPOLARITY         0x08
#define LM77_CONFIG_FAULT_QUEUE         LM75_CONFIG_FAULT_QUEUE_4

#endif /* _DEV_I2C_LM75REG_H_ */