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https://github.com/Telecominfraproject/OpenCellular.git
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35d534dfb3
+ create interface to set ALERT# pin as THERM mode and set high limit for a selected channel BUG=None BRANCH=master TEST=`make -j runtests` Change-Id: I7325eb9ddfcaca3ea873e1ee71da74258d7bec72 Signed-off-by: Ryan Zhang <Ryan.Zhang@quantatw.com> Reviewed-on: https://chromium-review.googlesource.com/344435 Reviewed-by: Shawn N <shawnn@chromium.org>
143 lines
4.4 KiB
C
143 lines
4.4 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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/* TMP432 temperature sensor module for Chrome EC */
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#ifndef __CROS_EC_TMP432_H
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#define __CROS_EC_TMP432_H
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#define TMP432_I2C_ADDR 0x98 /* 7-bit address is 0x4C */
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#define TMP432_IDX_LOCAL 0
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#define TMP432_IDX_REMOTE1 1
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#define TMP432_IDX_REMOTE2 2
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/* Chip-specific registers */
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#define TMP432_LOCAL 0x00
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#define TMP432_REMOTE1 0x01
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#define TMP432_STATUS 0x02
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#define TMP432_CONFIGURATION1_R 0x03
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#define TMP432_CONVERSION_RATE_R 0x04
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#define TMP432_LOCAL_HIGH_LIMIT_R 0x05
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#define TMP432_LOCAL_LOW_LIMIT_R 0x06
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#define TMP432_REMOTE1_HIGH_LIMIT_R 0x07
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#define TMP432_REMOTE1_LOW_LIMIT_R 0x08
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#define TMP432_CONFIGURATION1_W 0x09
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#define TMP432_CONVERSION_RATE_W 0x0a
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#define TMP432_LOCAL_HIGH_LIMIT_W 0x0b
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#define TMP432_LOCAL_LOW_LIMIT_W 0x0c
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#define TMP432_REMOTE1_HIGH_LIMIT_W 0x0d
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#define TMP432_REMOTE1_LOW_LIMIT_W 0x0e
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#define TMP432_ONESHOT 0x0f
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#define TMP432_REMOTE1_EXTD 0x10
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#define TMP432_REMOTE1_HIGH_LIMIT_EXTD 0x13
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#define TMP432_REMOTE1_LOW_LIMIT_EXTD 0x14
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#define TMP432_REMOTE2_HIGH_LIMIT_R 0x15
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#define TMP432_REMOTE2_HIGH_LIMIT_W 0x15
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#define TMP432_REMOTE2_LOW_LIMIT_R 0x16
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#define TMP432_REMOTE2_LOW_LIMIT_W 0x16
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#define TMP432_REMOTE2_HIGH_LIMIT_EXTD 0x17
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#define TMP432_REMOTE2_LOW_LIMIT_EXTD 0x18
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#define TMP432_REMOTE1_THERM_LIMIT 0x19
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#define TMP432_REMOTE2_THERM_LIMIT 0x1a
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#define TMP432_STATUS_FAULT 0x1b
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#define TMP432_CHANNEL_MASK 0x1f
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#define TMP432_LOCAL_THERM_LIMIT 0x20
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#define TMP432_THERM_HYSTERESIS 0x21
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#define TMP432_CONSECUTIVE_ALERT 0x22
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#define TMP432_REMOTE2 0x23
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#define TMP432_REMOTE2_EXTD 0x24
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#define TMP432_BETA_RANGE_CH1 0x25
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#define TMP432_BETA_RANGE_CH2 0x26
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#define TMP432_NFACTOR_REMOTE1 0x27
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#define TMP432_NFACTOR_REMOTE2 0x28
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#define TMP432_LOCAL_EXTD 0x29
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#define TMP432_STATUS_LIMIT_HIGH 0x35
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#define TMP432_STATUS_LIMIT_LOW 0x36
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#define TMP432_STATUS_THERM 0x37
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#define TMP432_LOCAL_HIGH_LIMIT_EXTD 0x3d
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#define TMP432_LOCAL_LOW_LIMIT_EXTD 0x3e
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#define TMP432_CONFIGURATION2_R 0x3f
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#define TMP432_CONFIGURATION2_W 0x3f
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#define TMP432_RESET_W 0xfc
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#define TMP432_DEVICE_ID 0xfd
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#define TMP432_MANUFACTURER_ID 0xfe
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/* Config register bits */
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#define TMP432_CONFIG1_TEMP_RANGE (1 << 2)
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/* TMP432_CONFIG1_MODE bit is use to enable THERM mode */
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#define TMP432_CONFIG1_MODE (1 << 5)
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#define TMP432_CONFIG1_RUN_L (1 << 6)
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#define TMP432_CONFIG1_ALERT_MASK_L (1 << 7)
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#define TMP432_CONFIG2_RESISTANCE_CORRECTION (1 << 2)
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#define TMP432_CONFIG2_LOCAL_ENABLE (1 << 3)
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#define TMP432_CONFIG2_REMOTE1_ENABLE (1 << 4)
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#define TMP432_CONFIG2_REMOTE2_ENABLE (1 << 5)
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/* Status register bits */
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#define TMP432_STATUS_TEMP_THERM_ALARM (1 << 1)
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#define TMP432_STATUS_OPEN (1 << 2)
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#define TMP432_STATUS_TEMP_LOW_ALARM (1 << 3)
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#define TMP432_STATUS_TEMP_HIGH_ALARM (1 << 4)
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#define TMP432_STATUS_BUSY (1 << 7)
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/* Limintaions */
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#define TMP432_HYSTERESIS_HIGH_LIMIT 255
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#define TMP432_HYSTERESIS_LOW_LIMIT 0
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enum tmp432_power_state {
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TMP432_POWER_OFF = 0,
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TMP432_POWER_ON,
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TMP432_POWER_COUNT
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};
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enum tmp432_channel_id {
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TMP432_CHANNEL_LOCAL,
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TMP432_CHANNEL_REMOTE1,
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TMP432_CHANNEL_REMOTE2,
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TMP432_CHANNEL_COUNT
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};
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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 tmp432_get_val(int idx, int *temp_ptr);
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/**
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* Power control function of tmp432 temperature sensor.
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*
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* @param power_on TMP432_POWER_ON: turn tmp432 sensor on.
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* TMP432_POWER_OFF: shut tmp432 sensor down.
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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 tmp432_set_power(enum tmp432_power_state power_on);
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/*
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* Set TMP432 ALERT#/THERM2# pin to THERM mode, and give a limit
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* for a specific channel.
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*
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* @param channel specific a channel
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*
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* @param limit_c High limit temperature, default: 85C
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*
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* @param hysteresis Hysteresis temperature, default: 10C
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* All channels share the same hysteresis
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*
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* In THERM mode, ALERT# pin will trigger(Low) by itself when any
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* channel's temperature is greater( >= )than channel's limit_c,
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* and release(High) by itself when channel's temperature is lower
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* than (limit_c - hysteresis)
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*/
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int tmp432_set_therm_limit(int channel, int limit_c, int hysteresis);
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#endif /* __CROS_EC_TMP432_H */
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