605 lines
21 KiB
C
605 lines
21 KiB
C
/*
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* Copyright (c) 2011-2012, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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/*
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* Qualcomm PMIC 8921/8018 ADC driver header file
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*
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*/
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#ifndef __PM8XXX_ADC_H
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#define __PM8XXX_ADC_H
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#include <linux/kernel.h>
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#include <linux/list.h>
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/**
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* enum pm8xxx_adc_channels - PM8XXX AMUX arbiter channels
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* %CHANNEL_VCOIN: Backup voltage for certain register set
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* %CHANNEL_VBAT: Battery voltage
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* %CHANNEL_DCIN: Charger input voltage without internal OVP
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* %CHANNEL_ICHG: Charge-current monitor
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* %CHANNEL_VPH_PWR: Main system power
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* %CHANNEL_IBAT: Battery charge current
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* %CHANNEL_MPP_1: 16:1 pre-mux unity scale MPP input
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* %CHANNEL_MPP_2: 16:1 pre-mux 1/3 scale MPP input
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* %CHANNEL_BATT_THERM: Battery temperature
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* %CHANNEL_BATT_ID: Battery detection
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* %CHANNEL_USBIN: Charger input voltage with internal OVP
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* %CHANNEL_DIE_TEMP: Pmic_die temperature
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* %CHANNEL_625MV: 625mv reference channel
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* %CHANNEL_125V: 1.25v reference channel
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* %CHANNEL_CHG_TEMP: Charger temperature
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* %CHANNEL_MUXOFF: Channel to reduce input load on the mux
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* %CHANNEL_NONE: Do not use this channel
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*/
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enum pm8xxx_adc_channels {
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CHANNEL_VCOIN = 0,
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CHANNEL_VBAT,
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CHANNEL_DCIN,
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CHANNEL_ICHG,
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CHANNEL_VPH_PWR,
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CHANNEL_IBAT,
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CHANNEL_MPP_1,
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CHANNEL_MPP_2,
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CHANNEL_BATT_THERM,
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/* PM8018 ADC Arbiter uses a single channel on AMUX8
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* to read either Batt_id or Batt_therm.
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*/
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CHANNEL_BATT_ID_THERM = CHANNEL_BATT_THERM,
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CHANNEL_BATT_ID,
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CHANNEL_USBIN,
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CHANNEL_DIE_TEMP,
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CHANNEL_625MV,
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CHANNEL_125V,
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CHANNEL_CHG_TEMP,
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CHANNEL_MUXOFF,
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CHANNEL_NONE,
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ADC_MPP_1_ATEST_8 = 20,
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ADC_MPP_1_USB_SNS_DIV20,
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ADC_MPP_1_DCIN_SNS_DIV20,
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ADC_MPP_1_AMUX3,
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ADC_MPP_1_AMUX4,
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ADC_MPP_1_AMUX5,
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ADC_MPP_1_AMUX6,
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ADC_MPP_1_AMUX7,
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ADC_MPP_1_AMUX8,
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ADC_MPP_1_ATEST_1,
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ADC_MPP_1_ATEST_2,
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ADC_MPP_1_ATEST_3,
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ADC_MPP_1_ATEST_4,
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ADC_MPP_1_ATEST_5,
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ADC_MPP_1_ATEST_6,
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ADC_MPP_1_ATEST_7,
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ADC_MPP_2_ATEST_8 = 40,
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ADC_MPP_2_USB_SNS_DIV20,
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ADC_MPP_2_DCIN_SNS_DIV20,
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ADC_MPP_2_AMUX3,
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ADC_MPP_2_AMUX4,
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ADC_MPP_2_AMUX5,
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ADC_MPP_2_AMUX6,
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ADC_MPP_2_AMUX7,
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ADC_MPP_2_AMUX8,
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ADC_MPP_2_ATEST_1,
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ADC_MPP_2_ATEST_2,
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ADC_MPP_2_ATEST_3,
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ADC_MPP_2_ATEST_4,
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ADC_MPP_2_ATEST_5,
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ADC_MPP_2_ATEST_6,
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ADC_MPP_2_ATEST_7,
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ADC_CHANNEL_MAX_NUM,
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};
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#define PM8XXX_ADC_PMIC_0 0x0
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#define PM8XXX_CHANNEL_ADC_625_UV 625000
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#define PM8XXX_CHANNEL_MPP_SCALE1_IDX 20
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#define PM8XXX_CHANNEL_MPP_SCALE3_IDX 40
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#define PM8XXX_AMUX_MPP_3 0x3
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#define PM8XXX_AMUX_MPP_4 0x4
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#define PM8XXX_AMUX_MPP_5 0x5
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#define PM8XXX_AMUX_MPP_6 0x6
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#define PM8XXX_AMUX_MPP_7 0x7
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#define PM8XXX_AMUX_MPP_8 0x8
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#define PM8XXX_ADC_DEV_NAME "pm8xxx-adc"
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/**
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* enum pm8xxx_adc_decimation_type - Sampling rate supported
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* %ADC_DECIMATION_TYPE1: 512
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* %ADC_DECIMATION_TYPE2: 1K
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* %ADC_DECIMATION_TYPE3: 2K
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* %ADC_DECIMATION_TYPE4: 4k
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* %ADC_DECIMATION_NONE: Do not use this Sampling type
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*
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* The Sampling rate is specific to each channel of the PM8XXX ADC arbiter.
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*/
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enum pm8xxx_adc_decimation_type {
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ADC_DECIMATION_TYPE1 = 0,
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ADC_DECIMATION_TYPE2,
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ADC_DECIMATION_TYPE3,
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ADC_DECIMATION_TYPE4,
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ADC_DECIMATION_NONE,
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};
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/**
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* enum pm8xxx_adc_calib_type - PM8XXX ADC Calibration type
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* %ADC_CALIB_ABSOLUTE: Use 625mV and 1.25V reference channels
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* %ADC_CALIB_RATIOMETRIC: Use reference Voltage/GND
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* %ADC_CALIB_CONFIG_NONE: Do not use this calibration type
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*
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* Use the input reference voltage depending on the calibration type
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* to calcluate the offset and gain parameters. The calibration is
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* specific to each channel of the PM8XXX ADC.
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*/
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enum pm8xxx_adc_calib_type {
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ADC_CALIB_ABSOLUTE = 0,
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ADC_CALIB_RATIOMETRIC,
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ADC_CALIB_NONE,
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};
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/**
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* enum pm8xxx_adc_channel_scaling_param - pre-scaling AMUX ratio
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* %CHAN_PATH_SCALING1: ratio of {1, 1}
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* %CHAN_PATH_SCALING2: ratio of {1, 3}
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* %CHAN_PATH_SCALING3: ratio of {1, 4}
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* %CHAN_PATH_SCALING4: ratio of {1, 6}
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* %CHAN_PATH_NONE: Do not use this pre-scaling ratio type
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*
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* The pre-scaling is applied for signals to be within the voltage range
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* of the ADC.
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*/
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enum pm8xxx_adc_channel_scaling_param {
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CHAN_PATH_SCALING1 = 0,
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CHAN_PATH_SCALING2,
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CHAN_PATH_SCALING3,
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CHAN_PATH_SCALING4,
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CHAN_PATH_SCALING_NONE,
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};
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/**
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* enum pm8xxx_adc_amux_input_rsv - HK/XOADC reference voltage
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* %AMUX_RSV0: XO_IN/XOADC_GND
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* %AMUX_RSV1: PMIC_IN/XOADC_GND
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* %AMUX_RSV2: PMIC_IN/BMS_CSP
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* %AMUX_RSV3: not used
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* %AMUX_RSV4: XOADC_GND/XOADC_GND
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* %AMUX_RSV5: XOADC_VREF/XOADC_GND
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* %AMUX_NONE: Do not use this input reference voltage selection
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*/
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enum pm8xxx_adc_amux_input_rsv {
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AMUX_RSV0 = 0,
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AMUX_RSV1,
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AMUX_RSV2,
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AMUX_RSV3,
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AMUX_RSV4,
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AMUX_RSV5,
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AMUX_NONE,
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};
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/**
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* enum pm8xxx_adc_premux_mpp_scale_type - 16:1 pre-mux scale ratio
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* %PREMUX_MPP_SCALE_0: No scaling to the input signal
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* %PREMUX_MPP_SCALE_1: Unity scaling selected by the user for MPP input
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* %PREMUX_MPP_SCALE_1_DIV3: 1/3 pre-scale to the input MPP signal
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* %PREMUX_MPP_NONE: Do not use this pre-scale mpp type
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*/
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enum pm8xxx_adc_premux_mpp_scale_type {
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PREMUX_MPP_SCALE_0 = 0,
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PREMUX_MPP_SCALE_1,
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PREMUX_MPP_SCALE_1_DIV3,
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PREMUX_MPP_NONE,
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};
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/**
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* enum pm8xxx_adc_scale_fn_type - Scaling function for pm8921 pre calibrated
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* digital data relative to ADC reference
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* %ADC_SCALE_DEFAULT: Default scaling to convert raw adc code to voltage
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* %ADC_SCALE_BATT_THERM: Conversion to temperature based on btm parameters
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* %ADC_SCALE_PMIC_THERM: Returns result in milli degree's Centigrade
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* %ADC_SCALE_XTERN_CHGR_CUR: Returns current across 0.1 ohm resistor
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* %ADC_SCALE_XOTHERM: Returns XO thermistor voltage in degree's Centigrade
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* %ADC_SCALE_NONE: Do not use this scaling type
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*/
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enum pm8xxx_adc_scale_fn_type {
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ADC_SCALE_DEFAULT = 0,
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ADC_SCALE_BATT_THERM,
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ADC_SCALE_PA_THERM,
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ADC_SCALE_PMIC_THERM,
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ADC_SCALE_XOTHERM,
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ADC_SCALE_NONE,
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};
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/**
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* struct pm8xxx_adc_linear_graph - Represent ADC characteristics
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* @dy: Numerator slope to calculate the gain
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* @dx: Denominator slope to calculate the gain
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* @adc_vref: A/D word of the voltage reference used for the channel
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* @adc_gnd: A/D word of the ground reference used for the channel
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*
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* Each ADC device has different offset and gain parameters which are computed
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* to calibrate the device.
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*/
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struct pm8xxx_adc_linear_graph {
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int64_t dy;
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int64_t dx;
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int64_t adc_vref;
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int64_t adc_gnd;
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};
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/**
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* struct pm8xxx_adc_map_pt - Map the graph representation for ADC channel
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* @x: Represent the ADC digitized code
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* @y: Represent the physical data which can be temperature, voltage,
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* resistance
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*/
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struct pm8xxx_adc_map_pt {
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int32_t x;
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int32_t y;
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};
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/**
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* struct pm8xxx_adc_scaling_ratio - Represent scaling ratio for adc input
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* @num: Numerator scaling parameter
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* @den: Denominator scaling parameter
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*/
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struct pm8xxx_adc_scaling_ratio {
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int32_t num;
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int32_t den;
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};
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/**
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* struct pm8xxx_adc_properties - Represent the ADC properties
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* @adc_reference: Reference voltage for PM8XXX ADC
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* @bitresolution: ADC bit resolution for PM8XXX ADC
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* @biploar: Polarity for PM8XXX ADC
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*/
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struct pm8xxx_adc_properties {
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uint32_t adc_vdd_reference;
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uint32_t bitresolution;
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bool bipolar;
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};
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/**
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* struct pm8xxx_adc_chan_properties - Represent channel properties of the ADC
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* @offset_gain_numerator: The inverse numerator of the gain applied to the
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* input channel
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* @offset_gain_denominator: The inverse denominator of the gain applied to the
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* input channel
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* @adc_graph: ADC graph for the channel of struct type pm8xxx_adc_linear_graph
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*/
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struct pm8xxx_adc_chan_properties {
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uint32_t offset_gain_numerator;
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uint32_t offset_gain_denominator;
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struct pm8xxx_adc_linear_graph adc_graph[2];
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};
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/**
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* struct pm8xxx_adc_chan_result - Represent the result of the PM8XXX ADC
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* @chan: The channel number of the requested conversion
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* @adc_code: The pre-calibrated digital output of a given ADC relative to the
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* the ADC reference
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* @measurement: In units specific for a given ADC; most ADC uses reference
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* voltage but some ADC uses reference current. This measurement
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* here is a number relative to a reference of a given ADC
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* @physical: The data meaningful for each individual channel whether it is
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* voltage, current, temperature, etc.
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* All voltage units are represented in micro - volts.
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* -Battery temperature units are represented as 0.1 DegC
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* -PA Therm temperature units are represented as DegC
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* -PMIC Die temperature units are represented as 0.001 DegC
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*/
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struct pm8xxx_adc_chan_result {
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uint32_t chan;
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int32_t adc_code;
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int64_t measurement;
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int64_t physical;
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};
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#if defined(CONFIG_SENSORS_PM8XXX_ADC) \
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|| defined(CONFIG_SENSORS_PM8XXX_ADC_MODULE)
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/**
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* pm8xxx_adc_scale_default() - Scales the pre-calibrated digital output
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* of an ADC to the ADC reference and compensates for the
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* gain and offset.
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* @adc_code: pre-calibrated digital ouput of the ADC.
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* @adc_prop: adc properties of the pm8xxx adc such as bit resolution,
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* reference voltage.
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* @chan_prop: individual channel properties to compensate the i/p scaling,
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* slope and offset.
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* @chan_rslt: Physical result to be stored.
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*/
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int32_t pm8xxx_adc_scale_default(int32_t adc_code,
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const struct pm8xxx_adc_properties *adc_prop,
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const struct pm8xxx_adc_chan_properties *chan_prop,
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struct pm8xxx_adc_chan_result *chan_rslt);
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/**
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* pm8xxx_adc_scale_tdkntcg_therm() - Scales the pre-calibrated digital output
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* of an ADC to the ADC reference and compensates for the
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* gain and offset. Returns the temperature of the xo therm in mili
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degC.
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* @adc_code: pre-calibrated digital ouput of the ADC.
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* @adc_prop: adc properties of the pm8xxx adc such as bit resolution,
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* reference voltage.
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* @chan_prop: individual channel properties to compensate the i/p scaling,
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* slope and offset.
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* @chan_rslt: physical result to be stored.
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*/
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int32_t pm8xxx_adc_tdkntcg_therm(int32_t adc_code,
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const struct pm8xxx_adc_properties *adc_prop,
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const struct pm8xxx_adc_chan_properties *chan_prop,
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struct pm8xxx_adc_chan_result *chan_rslt);
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/**
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* pm8xxx_adc_scale_batt_therm() - Scales the pre-calibrated digital output
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* of an ADC to the ADC reference and compensates for the
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* gain and offset. Returns the temperature in degC.
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* @adc_code: pre-calibrated digital ouput of the ADC.
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* @adc_prop: adc properties of the pm8xxx adc such as bit resolution,
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* reference voltage.
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* @chan_prop: individual channel properties to compensate the i/p scaling,
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* slope and offset.
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* @chan_rslt: physical result to be stored.
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*/
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int32_t pm8xxx_adc_scale_batt_therm(int32_t adc_code,
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const struct pm8xxx_adc_properties *adc_prop,
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const struct pm8xxx_adc_chan_properties *chan_prop,
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struct pm8xxx_adc_chan_result *chan_rslt);
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/**
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* pm8xxx_adc_scale_pa_therm() - Scales the pre-calibrated digital output
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* of an ADC to the ADC reference and compensates for the
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* gain and offset. Returns the temperature in degC.
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* @adc_code: pre-calibrated digital ouput of the ADC.
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* @adc_prop: adc properties of the pm8xxx adc such as bit resolution,
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* reference voltage.
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* @chan_prop: individual channel properties to compensate the i/p scaling,
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* slope and offset.
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* @chan_rslt: physical result to be stored.
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*/
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int32_t pm8xxx_adc_scale_pa_therm(int32_t adc_code,
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const struct pm8xxx_adc_properties *adc_prop,
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const struct pm8xxx_adc_chan_properties *chan_prop,
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struct pm8xxx_adc_chan_result *chan_rslt);
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/**
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* pm8xxx_adc_scale_pmic_therm() - Scales the pre-calibrated digital output
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* of an ADC to the ADC reference and compensates for the
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* gain and offset. Performs the AMUX out as 2mv/K and returns
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* the temperature in mili degC.
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* @adc_code: pre-calibrated digital ouput of the ADC.
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* @adc_prop: adc properties of the pm8xxx adc such as bit resolution,
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* reference voltage.
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* @chan_prop: individual channel properties to compensate the i/p scaling,
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* slope and offset.
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* @chan_rslt: physical result to be stored.
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*/
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int32_t pm8xxx_adc_scale_pmic_therm(int32_t adc_code,
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const struct pm8xxx_adc_properties *adc_prop,
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const struct pm8xxx_adc_chan_properties *chan_prop,
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struct pm8xxx_adc_chan_result *chan_rslt);
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/**
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* pm8xxx_adc_scale_batt_id() - Scales the pre-calibrated digital output
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* of an ADC to the ADC reference and compensates for the
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* gain and offset.
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* @adc_code: pre-calibrated digital ouput of the ADC.
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* @adc_prop: adc properties of the pm8xxx adc such as bit resolution,
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* reference voltage.
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* @chan_prop: individual channel properties to compensate the i/p scaling,
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* slope and offset.
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* @chan_rslt: physical result to be stored.
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*/
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int32_t pm8xxx_adc_scale_batt_id(int32_t adc_code,
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const struct pm8xxx_adc_properties *adc_prop,
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const struct pm8xxx_adc_chan_properties *chan_prop,
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struct pm8xxx_adc_chan_result *chan_rslt);
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#else
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static inline int32_t pm8xxx_adc_scale_default(int32_t adc_code,
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const struct pm8xxx_adc_properties *adc_prop,
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const struct pm8xxx_adc_chan_properties *chan_prop,
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struct pm8xxx_adc_chan_result *chan_rslt)
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{ return -ENXIO; }
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static inline int32_t pm8xxx_adc_tdkntcg_therm(int32_t adc_code,
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const struct pm8xxx_adc_properties *adc_prop,
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const struct pm8xxx_adc_chan_properties *chan_prop,
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struct pm8xxx_adc_chan_result *chan_rslt)
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{ return -ENXIO; }
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static inline int32_t pm8xxx_adc_scale_batt_therm(int32_t adc_code,
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const struct pm8xxx_adc_properties *adc_prop,
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const struct pm8xxx_adc_chan_properties *chan_prop,
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struct pm8xxx_adc_chan_result *chan_rslt)
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{ return -ENXIO; }
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static inline int32_t pm8xxx_adc_scale_pa_therm(int32_t adc_code,
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const struct pm8xxx_adc_properties *adc_prop,
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const struct pm8xxx_adc_chan_properties *chan_prop,
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struct pm8xxx_adc_chan_result *chan_rslt)
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{ return -ENXIO; }
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static inline int32_t pm8xxx_adc_scale_pmic_therm(int32_t adc_code,
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const struct pm8xxx_adc_properties *adc_prop,
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const struct pm8xxx_adc_chan_properties *chan_prop,
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struct pm8xxx_adc_chan_result *chan_rslt)
|
|
{ return -ENXIO; }
|
|
static inline int32_t pm8xxx_adc_scale_batt_id(int32_t adc_code,
|
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const struct pm8xxx_adc_properties *adc_prop,
|
|
const struct pm8xxx_adc_chan_properties *chan_prop,
|
|
struct pm8xxx_adc_chan_result *chan_rslt)
|
|
{ return -ENXIO; }
|
|
#endif
|
|
|
|
/**
|
|
* struct pm8xxx_adc_scale_fn - Scaling function prototype
|
|
* @chan: Function pointer to one of the scaling functions
|
|
* which takes the adc properties, channel properties,
|
|
* and returns the physical result
|
|
*/
|
|
struct pm8xxx_adc_scale_fn {
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|
int32_t (*chan) (int32_t,
|
|
const struct pm8xxx_adc_properties *,
|
|
const struct pm8xxx_adc_chan_properties *,
|
|
struct pm8xxx_adc_chan_result *);
|
|
};
|
|
|
|
/**
|
|
* struct pm8xxx_adc_amux - AMUX properties for individual channel
|
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* @name: Channel name
|
|
* @channel_name: Channel in integer used from pm8xxx_adc_channels
|
|
* @chan_path_prescaling: Channel scaling performed on the input signal
|
|
* @adc_rsv: Input reference Voltage/GND selection to the ADC
|
|
* @adc_decimation: Sampling rate desired for the channel
|
|
* adc_scale_fn: Scaling function to convert to the data meaningful for
|
|
* each individual channel whether it is voltage, current,
|
|
* temperature, etc and compensates the channel properties
|
|
*/
|
|
struct pm8xxx_adc_amux {
|
|
char *name;
|
|
enum pm8xxx_adc_channels channel_name;
|
|
enum pm8xxx_adc_channel_scaling_param chan_path_prescaling;
|
|
enum pm8xxx_adc_amux_input_rsv adc_rsv;
|
|
enum pm8xxx_adc_decimation_type adc_decimation;
|
|
enum pm8xxx_adc_scale_fn_type adc_scale_fn;
|
|
};
|
|
|
|
/**
|
|
* struct pm8xxx_adc_arb_btm_param - PM8XXX ADC BTM parameters to set threshold
|
|
* temperature for client notification
|
|
* @low_thr_temp: low temperature threshold request for notification
|
|
* @high_thr_temp: high temperature threshold request for notification
|
|
* @low_thr_voltage: low temperature converted to voltage by arbiter driver
|
|
* @high_thr_voltage: high temperature converted to voltage by arbiter driver
|
|
* @interval: Interval period to check for temperature notification
|
|
* @btm_warm_fn: Remote function call for warm threshold.
|
|
* @btm_cool_fn: Remote function call for cold threshold.
|
|
*
|
|
* BTM client passes the parameters to be set for the
|
|
* temperature threshold notifications. The client is
|
|
* responsible for setting the new threshold
|
|
* levels once the thresholds are reached
|
|
*/
|
|
struct pm8xxx_adc_arb_btm_param {
|
|
int32_t low_thr_temp;
|
|
int32_t high_thr_temp;
|
|
uint64_t low_thr_voltage;
|
|
uint64_t high_thr_voltage;
|
|
int32_t interval;
|
|
void (*btm_warm_fn) (bool);
|
|
void (*btm_cool_fn) (bool);
|
|
};
|
|
|
|
int32_t pm8xxx_adc_batt_scaler(struct pm8xxx_adc_arb_btm_param *,
|
|
const struct pm8xxx_adc_properties *adc_prop,
|
|
const struct pm8xxx_adc_chan_properties *chan_prop);
|
|
/**
|
|
* struct pm8xxx_adc_platform_data - PM8XXX ADC platform data
|
|
* @adc_prop: ADC specific parameters, voltage and channel setup
|
|
* @adc_channel: Channel properties of the ADC arbiter
|
|
* @adc_num_board_channel: Number of channels added in the board file
|
|
* @adc_mpp_base: PM8XXX MPP0 base passed from board file. This is used
|
|
* to offset the PM8XXX MPP passed to configure the
|
|
* the MPP to AMUX mapping.
|
|
*/
|
|
struct pm8xxx_adc_platform_data {
|
|
struct pm8xxx_adc_properties *adc_prop;
|
|
struct pm8xxx_adc_amux *adc_channel;
|
|
uint32_t adc_num_board_channel;
|
|
uint32_t adc_mpp_base;
|
|
};
|
|
|
|
/* Public API */
|
|
#if defined(CONFIG_SENSORS_PM8XXX_ADC) \
|
|
|| defined(CONFIG_SENSORS_PM8XXX_ADC_MODULE)
|
|
/**
|
|
* pm8xxx_adc_read() - Performs ADC read on the channel.
|
|
* @channel: Input channel to perform the ADC read.
|
|
* @result: Structure pointer of type adc_chan_result
|
|
* in which the ADC read results are stored.
|
|
*/
|
|
uint32_t pm8xxx_adc_read(enum pm8xxx_adc_channels channel,
|
|
struct pm8xxx_adc_chan_result *result);
|
|
/**
|
|
* pm8xxx_adc_mpp_config_read() - Configure's the PM8XXX MPP
|
|
* to AMUX6 and performs an ADC read.
|
|
*
|
|
* On PM8921 ADC the MPP needs to first be configured
|
|
* as an analog input to the AMUX pre-mux channel before
|
|
* issuing a read request. PM8921 MPP 8 is mapped to AMUX8
|
|
* and is common between remote processor's.
|
|
*
|
|
* On PM8018 ADC the MPP is directly connected to the AMUX
|
|
* pre-mux. Therefore clients of the PM8018 MPP do not need
|
|
* to configure the MPP as an analog input to the pre-mux.
|
|
* Clients can directly issue request on the pre-mux AMUX
|
|
* channel to read the ADC on the MPP. Clients can directly
|
|
* call the pm8xxx_adc_read().
|
|
* @mpp_num PM8XXX MPP number to configure to AMUX6.
|
|
* @channel: Input channel to perform the ADC read.
|
|
* a) 'ADC_MPP_1_AMUX6' if the input voltage is less than 1.8V
|
|
* b) 'ADC_MPP_2_AMUX6' if the input voltage is greater then 1.8V
|
|
* the input voltage is pre-divided by 3 and passed to the ADC.
|
|
* The appropriate scaling function needs to be selected to let
|
|
* the driver know a post scaling is required before returning
|
|
* the result.
|
|
* @result: Structure pointer of type adc_chan_result
|
|
* in which the ADC read results are stored.
|
|
*/
|
|
uint32_t pm8xxx_adc_mpp_config_read(uint32_t mpp_num,
|
|
enum pm8xxx_adc_channels channel,
|
|
struct pm8xxx_adc_chan_result *result);
|
|
/**
|
|
* pm8xxx_adc_btm_start() - Configure the BTM registers and start
|
|
monitoring the BATT_THERM channel for
|
|
threshold warm/cold temperature set
|
|
by the Battery client. The btm_start
|
|
api is to be used after calling the
|
|
pm8xxx_btm_configure() api which sets
|
|
the temperature thresholds, interval
|
|
and functions to call when warm/cold
|
|
events are triggered.
|
|
* @param: none.
|
|
*/
|
|
uint32_t pm8xxx_adc_btm_start(void);
|
|
|
|
/**
|
|
* pm8xxx_adc_btm_end() - Configures the BTM registers to stop
|
|
* monitoring the BATT_THERM channel for
|
|
* warm/cold events and disables the
|
|
* interval timer.
|
|
* @param: none.
|
|
*/
|
|
uint32_t pm8xxx_adc_btm_end(void);
|
|
|
|
/**
|
|
* pm8xxx_adc_btm_configure() - Configures the BATT_THERM channel
|
|
* parameters for warm/cold thresholds.
|
|
* Sets the interval timer for perfoming
|
|
* reading the temperature done by the HW.
|
|
* @btm_param: Structure pointer of type adc_arb_btm_param *
|
|
* which client provides for threshold warm/cold,
|
|
* interval and functions to call when warm/cold
|
|
* events are triggered.
|
|
*/
|
|
uint32_t pm8xxx_adc_btm_configure(struct pm8xxx_adc_arb_btm_param *);
|
|
#else
|
|
static inline uint32_t pm8xxx_adc_read(uint32_t channel,
|
|
struct pm8xxx_adc_chan_result *result)
|
|
{ return -ENXIO; }
|
|
static inline uint32_t pm8xxx_adc_mpp_config_read(uint32_t mpp_num,
|
|
enum pm8xxx_adc_channels channel,
|
|
struct pm8xxx_adc_chan_result *result)
|
|
{ return -ENXIO; }
|
|
static inline uint32_t pm8xxx_adc_btm_start(void)
|
|
{ return -ENXIO; }
|
|
static inline uint32_t pm8xxx_adc_btm_end(void)
|
|
{ return -ENXIO; }
|
|
static inline uint32_t pm8xxx_adc_btm_configure(
|
|
struct pm8xxx_adc_arb_btm_param *param)
|
|
{ return -ENXIO; }
|
|
#endif
|
|
|
|
#endif /* PM8XXX_ADC_H */
|