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104f811e67
This unifies all the EC header files to use __CROS_EC_FILENAME_H as the include guard. Well, except for test/ util/ and extra/ which use __TEST_ __UTIL_ and __EXTRA_ prefixes respectively. BUG=chromium:496895 BRANCH=none TEST=make buildall -j Signed-off-by: Bill Richardson <wfrichar@chromium.org> Change-Id: Iea71b3a08bdec94a11239de810a2b2e152b15029 Reviewed-on: https://chromium-review.googlesource.com/278121 Reviewed-by: Randall Spangler <rspangler@chromium.org>
71 lines
2.3 KiB
C
71 lines
2.3 KiB
C
/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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/* G781 temperature sensor module for Chrome EC */
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#ifndef __CROS_EC_G781_H
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#define __CROS_EC_G781_H
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#define G781_I2C_ADDR 0x98 /* 7-bit address is 0x4C */
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#define G781_IDX_INTERNAL 0
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#define G781_IDX_EXTERNAL 1
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/* Chip-specific commands */
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#define G781_TEMP_LOCAL 0x00
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#define G781_TEMP_REMOTE 0x01
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#define G781_STATUS 0x02
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#define G781_CONFIGURATION_R 0x03
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#define G781_CONVERSION_RATE_R 0x04
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#define G781_LOCAL_TEMP_HIGH_LIMIT_R 0x05
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#define G781_LOCAL_TEMP_LOW_LIMIT_R 0x06
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#define G781_REMOTE_TEMP_HIGH_LIMIT_R 0x07
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#define G781_REMOTE_TEMP_LOW_LIMIT_R 0x08
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#define G781_CONFIGURATION_W 0x09
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#define G781_CONVERSION_RATE_W 0x0a
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#define G781_LOCAL_TEMP_HIGH_LIMIT_W 0x0b
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#define G781_LOCAL_TEMP_LOW_LIMIT_W 0x0c
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#define G781_REMOTE_TEMP_HIGH_LIMIT_W 0x0d
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#define G781_REMOTE_TEMP_LOW_LIMIT_W 0x0e
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#define G781_ONESHOT 0x0f
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#define G781_REMOTE_TEMP_EXTENDED 0x10
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#define G781_REMOTE_TEMP_OFFSET_HIGH 0x11
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#define G781_REMOTE_TEMP_OFFSET_EXTD 0x12
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#define G781_REMOTE_T_HIGH_LIMIT_EXTD 0x13
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#define G781_REMOTE_T_LOW_LIMIT_EXTD 0x14
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#define G781_REMOTE_TEMP_THERM_LIMIT 0x19
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#define G781_LOCAL_TEMP_THERM_LIMIT 0x20
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#define G781_THERM_HYSTERESIS 0x21
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#define G781_ALERT_FAULT_QUEUE_CODE 0x22
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#define G781_MANUFACTURER_ID 0xFE
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#define G781_DEVICE_ID 0xFF
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/* Config register bits */
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#define G781_CONFIGURATION_STANDBY (1 << 6)
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#define G781_CONFIGURATION_ALERT_MASK (1 << 7)
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/* Status register bits */
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#define G781_STATUS_LOCAL_TEMP_THERM_ALARM (1 << 0)
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#define G781_STATUS_REMOTE_TEMP_THERM_ALARM (1 << 1)
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#define G781_STATUS_REMOTE_TEMP_FAULT (1 << 2)
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#define G781_STATUS_REMOTE_TEMP_LOW_ALARM (1 << 3)
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#define G781_STATUS_REMOTE_TEMP_HIGH_ALARM (1 << 4)
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#define G781_STATUS_LOCAL_TEMP_LOW_ALARM (1 << 5)
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#define G781_STATUS_LOCAL_TEMP_HIGH_ALARM (1 << 6)
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#define G781_STATUS_BUSY (1 << 7)
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/**
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* Get the last polled value of a sensor.
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*
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* @param idx Index to read. Idx indicates whether to read die
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* temperature or external temperature.
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* @param temp_ptr Destination for temperature in K.
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*
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* @return EC_SUCCESS if successful, non-zero if error.
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*/
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int g781_get_val(int idx, int *temp_ptr);
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#endif /* __CROS_EC_G781_H */
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