| /* |
| * Copyright (c) 2011, Code Aurora Forum. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 and |
| * only version 2 as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| /* |
| * Qualcomm PMIC 8921 ADC driver header file |
| * |
| */ |
| |
| #ifndef __MFD_PM8921_ADC_H |
| #define __MFD_PM8921_ADC_H |
| |
| #include <linux/kernel.h> |
| #include <linux/list.h> |
| |
| /** |
| * enum pm8921_adc_channels - PM8921 AMUX arbiter channels |
| * %CHANNEL_VCOIN: Backup voltage for certain register set |
| * %CHANNEL_VBAT: Battery voltage |
| * %CHANNEL_DCIN: Charger input voltage without internal OVP |
| * %CHANNEL_ICHG: Charge-current monitor |
| * %CHANNEL_VPH_PWR: Main system power |
| * %CHANNEL_IBAT: Battery charge current |
| * %CHANNEL_MPP_1: 16:1 pre-mux unity scale MPP input |
| * %CHANNEL_MPP_2: 16:1 pre-mux 1/3 scale MPP input |
| * %CHANNEL_BATT_THERM: Battery temperature |
| * %CHANNEL_BATT_ID: Battery detection |
| * %CHANNEL_USBIN: Charger input voltage with internal OVP |
| * %CHANNEL_DIE_TEMP: Pmic_die temperature |
| * %CHANNEL_625MV: 625mv reference channel |
| * %CHANNEL_125V: 1.25v reference channel |
| * %CHANNEL_CHG_TEMP: Charger temperature |
| * %CHANNEL_MUXOFF: Channel to reduce input load on the mux |
| * %CHANNEL_NONE: Do not use this channel |
| */ |
| enum pm8921_adc_channels { |
| CHANNEL_VCOIN = 0, |
| CHANNEL_VBAT, |
| CHANNEL_DCIN, |
| CHANNEL_ICHG, |
| CHANNEL_VPH_PWR, |
| CHANNEL_IBAT, |
| CHANNEL_MPP_1, |
| CHANNEL_MPP_2, |
| CHANNEL_BATT_THERM, |
| CHANNEL_BATT_ID, |
| CHANNEL_USBIN, |
| CHANNEL_DIE_TEMP, |
| CHANNEL_625MV, |
| CHANNEL_125V, |
| CHANNEL_CHG_TEMP, |
| CHANNEL_MUXOFF, |
| CHANNEL_NONE, |
| }; |
| |
| /** |
| * enum pm8921_adc_mpp_channels - PM8921 AMUX arbiter MPP channels |
| * Yet to be defined, each of the value is representative |
| * of the device connected to the MPP |
| * %ADC_MPP_AMUX8: Fixed mappaing to PA THERM |
| */ |
| enum pm8921_adc_mpp_channels { |
| ADC_MPP_ATEST_8 = 0, |
| ADC_MPP_USB_SNS_DIV20, |
| ADC_MPP_DCIN_SNS_DIV20, |
| ADC_MPP_AMUX3, |
| ADC_MPP_AMUX4, |
| ADC_MPP_AMUX5, |
| ADC_MPP_AMUX6, |
| ADC_MPP_AMUX7, |
| ADC_MPP_AMUX8, |
| ADC_MPP_ATEST_1, |
| ADC_MPP_ATEST_2, |
| ADC_MPP_ATEST_3, |
| ADC_MPP_ATEST_4, |
| ADC_MPP_ATEST_5, |
| ADC_MPP_ATEST_6, |
| ADC_MPP_ATEST_7, |
| ADC_MPP_CHANNEL_NONE, |
| }; |
| |
| #define PM8921_ADC_PMIC_0 0x0 |
| |
| #define PM8921_CHANNEL_ADC_625_MV 625 |
| |
| #define PM8921_AMUX_MPP_3 0x3 |
| #define PM8921_AMUX_MPP_4 0x4 |
| #define PM8921_AMUX_MPP_5 0x5 |
| #define PM8921_AMUX_MPP_6 0x6 |
| #define PM8921_AMUX_MPP_8 0x8 |
| |
| #define PM8921_ADC_DEV_NAME "pm8921-adc" |
| |
| /** |
| * enum pm8921_adc_decimation_type - Sampling rate supported |
| * %ADC_DECIMATION_TYPE1: 512 |
| * %ADC_DECIMATION_TYPE2: 1K |
| * %ADC_DECIMATION_TYPE3: 2K |
| * %ADC_DECIMATION_TYPE4: 4k |
| * %ADC_DECIMATION_NONE: Do not use this Sampling type |
| * |
| * The Sampling rate is specific to each channel of the PM8921 ADC arbiter. |
| */ |
| enum pm8921_adc_decimation_type { |
| ADC_DECIMATION_TYPE1 = 0, |
| ADC_DECIMATION_TYPE2, |
| ADC_DECIMATION_TYPE3, |
| ADC_DECIMATION_TYPE4, |
| ADC_DECIMATION_NONE, |
| }; |
| |
| /** |
| * enum pm8921_adc_calib_type - PM8921 ADC Calibration type |
| * %ADC_CALIB_ABSOLUTE: Use 625mV and 1.25V reference channels |
| * %ADC_CALIB_RATIOMETRIC: Use reference Voltage/GND |
| * %ADC_CALIB_CONFIG_NONE: Do not use this calibration type |
| * |
| * Use the input reference voltage depending on the calibration type |
| * to calcluate the offset and gain parameters. The calibration is |
| * specific to each channel of the PM8921 ADC. |
| */ |
| enum pm8921_adc_calib_type { |
| ADC_CALIB_ABSOLUTE = 0, |
| ADC_CALIB_RATIOMETRIC, |
| ADC_CALIB_CONFIG_NONE, |
| }; |
| |
| /** |
| * enum pm8921_adc_channel_scaling_param - pre-scaling AMUX ratio |
| * %CHAN_PATH_SCALING1: ratio of {1, 1} |
| * %CHAN_PATH_SCALING2: ratio of {1, 3} |
| * %CHAN_PATH_SCALING3: ratio of {1, 4} |
| * %CHAN_PATH_SCALING4: ratio of {1, 6} |
| * %CHAN_PATH_NONE: Do not use this pre-scaling ratio type |
| * |
| * The pre-scaling is applied for signals to be within the voltage range |
| * of the ADC. |
| */ |
| enum pm8921_adc_channel_scaling_param { |
| CHAN_PATH_SCALING1 = 0, |
| CHAN_PATH_SCALING2, |
| CHAN_PATH_SCALING3, |
| CHAN_PATH_SCALING4, |
| CHAN_PATH_SCALING_NONE, |
| }; |
| |
| /** |
| * enum pm8921_adc_amux_input_rsv - HK/XOADC reference voltage |
| * %AMUX_RSV0: XO_IN/XOADC_GND |
| * %AMUX_RSV1: PMIC_IN/XOADC_GND |
| * %AMUX_RSV2: PMIC_IN/BMS_CSP |
| * %AMUX_RSV3: not used |
| * %AMUX_RSV4: XOADC_GND/XOADC_GND |
| * %AMUX_RSV5: XOADC_VREF/XOADC_GND |
| * %AMUX_NONE: Do not use this input reference voltage selection |
| */ |
| enum pm8921_adc_amux_input_rsv { |
| AMUX_RSV0 = 0, |
| AMUX_RSV1, |
| AMUX_RSV2, |
| AMUX_RSV3, |
| AMUX_RSV4, |
| AMUX_RSV5, |
| AMUX_NONE, |
| }; |
| |
| /** |
| * enum pm8921_adc_premux_mpp_scale_type - 16:1 pre-mux scale ratio |
| * %PREMUX_MPP_SCALE_0: No scaling to the input signal |
| * %PREMUX_MPP_SCALE_1: Unity scaling selected by the user for MPP input |
| * %PREMUX_MPP_SCALE_1_DIV3: 1/3 pre-scale to the input MPP signal |
| * %PREMUX_MPP_NONE: Do not use this pre-scale mpp type |
| */ |
| enum pm8921_adc_premux_mpp_scale_type { |
| PREMUX_MPP_SCALE_0 = 0, |
| PREMUX_MPP_SCALE_1, |
| PREMUX_MPP_SCALE_1_DIV3, |
| PREMUX_MPP_NONE, |
| }; |
| |
| /** |
| * enum pm8921_adc_scale_fn_type - Scaling function for pm8921 pre calibrated |
| * digital data relative to ADC reference |
| * %ADC_SCALE_DEFAULT: Default scaling to convert raw adc code to voltage |
| * %ADC_SCALE_BATT_THERM: Conversion to temperature based on btm parameters |
| * %ADC_SCALE_PMIC_THERM: Returns result in milli degree's Centigrade |
| * %ADC_SCALE_XTERN_CHGR_CUR: Returns current across 0.1 ohm resistor |
| * %ADC_SCALE_NONE: Do not use this scaling type |
| */ |
| enum pm8921_adc_scale_fn_type { |
| ADC_SCALE_DEFAULT = 0, |
| ADC_SCALE_BATT_THERM, |
| ADC_SCALE_PMIC_THERM, |
| ADC_SCALE_XTERN_CHGR_CUR, |
| ADC_SCALE_NONE, |
| }; |
| |
| /** |
| * struct pm8921_adc_linear_graph - Represent ADC characteristics |
| * @offset: Offset with respect to the actual curve |
| * @dy: Numerator slope to calculate the gain |
| * @dx: Denominator slope to calculate the gain |
| * |
| * Each ADC device has different offset and gain parameters which are computed |
| * to calibrate the device. |
| */ |
| struct pm8921_adc_linear_graph { |
| int32_t offset; |
| int32_t dy; |
| int32_t dx; |
| }; |
| |
| /** |
| * struct pm8921_adc_map_pt - Map the graph representation for ADC channel |
| * @x: Represent the ADC digitized code |
| * @y: Represent the physical data which can be temperature, voltage, |
| * resistance |
| */ |
| struct pm8921_adc_map_pt { |
| int32_t x; |
| int32_t y; |
| }; |
| |
| /** |
| * struct pm8921_adc_scaling_ratio - Represent scaling ratio for adc input |
| * @num: Numerator scaling parameter |
| * @den: Denominator scaling parameter |
| */ |
| struct pm8921_adc_scaling_ratio { |
| int32_t num; |
| int32_t den; |
| }; |
| |
| /** |
| * struct pm8921_adc_properties - Represent the ADC properties |
| * @adc_reference: Reference voltage for PM8921 ADC |
| * @bitresolution: ADC bit resolution for PM8921 ADC |
| * @biploar: Polarity for PM8921 ADC |
| */ |
| struct pm8921_adc_properties { |
| uint32_t adc_vdd_reference; |
| uint32_t bitresolution; |
| bool bipolar; |
| }; |
| |
| /** |
| * struct pm8921_adc_chan_properties - Represent channel properties of the ADC |
| * @offset_gain_numerator: The inverse numerator of the gain applied to the |
| * input channel |
| * @offset_gain_denominator: The inverse denominator of the gain applied to the |
| * input channel |
| * @adc_graph: ADC graph for the channel of struct type pm8921_adc_linear_graph |
| */ |
| struct pm8921_adc_chan_properties { |
| uint32_t offset_gain_numerator; |
| uint32_t offset_gain_denominator; |
| struct pm8921_adc_linear_graph adc_graph[2]; |
| }; |
| |
| /** |
| * struct pm8921_adc_chan_result - Represent the result of the PM8921 ADC |
| * @chan: The channel number of the requested conversion |
| * @adc_code: The pre-calibrated digital output of a given ADC relative to the |
| * the ADC reference |
| * @measurement: In units specific for a given ADC; most ADC uses reference |
| * voltage but some ADC uses reference current. This measurement |
| * here is a number relative to a reference of a given ADC |
| * @physical: The data meaningful for each individual channel whether it is |
| * voltage, current, temperature, etc. |
| */ |
| struct pm8921_adc_chan_result { |
| uint32_t chan; |
| int32_t adc_code; |
| int64_t measurement; |
| int64_t physical; |
| }; |
| |
| #if defined(CONFIG_MFD_PM8921_ADC) || defined(CONFIG_MFD_PM8921_ADC_MODULE) |
| /** |
| * pm8921_adc_scale_default() - Scales the pre-calibrated digital output |
| * of an ADC to the ADC reference and compensates for the |
| * gain and offset. |
| * @adc_code: pre-calibrated digital ouput of the ADC. |
| * @adc_prop: adc properties of the pm8921 adc such as bit resolution, |
| * reference voltage. |
| * @chan_prop: individual channel properties to compensate the i/p scaling, |
| * slope and offset. |
| * @chan_rslt: Physical result to be stored. |
| */ |
| int32_t pm8921_adc_scale_default(int32_t adc_code, |
| const struct pm8921_adc_properties *adc_prop, |
| const struct pm8921_adc_chan_properties *chan_prop, |
| struct pm8921_adc_chan_result *chan_rslt); |
| /** |
| * pm8921_adc_scale_tdkntcg_therm() - Scales the pre-calibrated digital output |
| * of an ADC to the ADC reference and compensates for the |
| * gain and offset. Returns the temperature of the xo therm in mili |
| degC. |
| * @adc_code: pre-calibrated digital ouput of the ADC. |
| * @adc_prop: adc properties of the pm8921 adc such as bit resolution, |
| * reference voltage. |
| * @chan_prop: individual channel properties to compensate the i/p scaling, |
| * slope and offset. |
| * @chan_rslt: physical result to be stored. |
| */ |
| int32_t pm8921_adc_tdkntcg_therm(int32_t adc_code, |
| const struct pm8921_adc_properties *adc_prop, |
| const struct pm8921_adc_chan_properties *chan_prop, |
| struct pm8921_adc_chan_result *chan_rslt); |
| /** |
| * pm8921_adc_scale_batt_therm() - Scales the pre-calibrated digital output |
| * of an ADC to the ADC reference and compensates for the |
| * gain and offset. Returns the temperature in degC. |
| * @adc_code: pre-calibrated digital ouput of the ADC. |
| * @adc_prop: adc properties of the pm8921 adc such as bit resolution, |
| * reference voltage. |
| * @chan_prop: individual channel properties to compensate the i/p scaling, |
| * slope and offset. |
| * @chan_rslt: physical result to be stored. |
| */ |
| int32_t pm8921_adc_scale_batt_therm(int32_t adc_code, |
| const struct pm8921_adc_properties *adc_prop, |
| const struct pm8921_adc_chan_properties *chan_prop, |
| struct pm8921_adc_chan_result *chan_rslt); |
| /** |
| * pm8921_adc_scale_pmic_therm() - Scales the pre-calibrated digital output |
| * of an ADC to the ADC reference and compensates for the |
| * gain and offset. Performs the AMUX out as 2mv/K and returns |
| * the temperature in mili degC. |
| * @adc_code: pre-calibrated digital ouput of the ADC. |
| * @adc_prop: adc properties of the pm8921 adc such as bit resolution, |
| * reference voltage. |
| * @chan_prop: individual channel properties to compensate the i/p scaling, |
| * slope and offset. |
| * @chan_rslt: physical result to be stored. |
| */ |
| int32_t pm8921_adc_scale_pmic_therm(int32_t adc_code, |
| const struct pm8921_adc_properties *adc_prop, |
| const struct pm8921_adc_chan_properties *chan_prop, |
| struct pm8921_adc_chan_result *chan_rslt); |
| /** |
| * pm8921_adc_scale_xtern_chgr_cur() - Scales the pre-calibrated digital output |
| * of an ADC to the ADC reference and compensates for the |
| * gain and offset. Returns the current across the 10m ohm |
| * resistor. |
| * @adc_code: pre-calibrated digital ouput of the ADC. |
| * @adc_prop: adc properties of the pm8921 adc such as bit resolution, |
| * reference voltage. |
| * @chan_prop: individual channel properties to compensate the i/p scaling, |
| * slope and offset. |
| * @chan_rslt: physical result to be stored. |
| */ |
| int32_t pm8921_adc_scale_xtern_chgr_cur(int32_t adc_code, |
| const struct pm8921_adc_properties *adc_prop, |
| const struct pm8921_adc_chan_properties *chan_prop, |
| struct pm8921_adc_chan_result *chan_rslt); |
| |
| #else |
| static inline int32_t pm8921_adc_scale_default(int32_t adc_code, |
| const struct pm8921_adc_properties *adc_prop, |
| const struct pm8921_adc_chan_properties *chan_prop, |
| struct pm8921_adc_chan_result *chan_rslt) |
| { return -ENXIO; } |
| static inline int32_t pm8921_adc_tdkntcg_therm(int32_t adc_code, |
| const struct pm8921_adc_properties *adc_prop, |
| const struct pm8921_adc_chan_properties *chan_prop, |
| struct pm8921_adc_chan_result *chan_rslt) |
| { return -ENXIO; } |
| static inline int32_t pm8921_adc_scale_batt_therm(int32_t adc_code, |
| const struct pm8921_adc_properties *adc_prop, |
| const struct pm8921_adc_chan_properties *chan_prop, |
| struct pm8921_adc_chan_result *chan_rslt) |
| { return -ENXIO; } |
| static inline int32_t pm8921_adc_scale_pmic_therm(int32_t adc_code, |
| const struct pm8921_adc_properties *adc_prop, |
| const struct pm8921_adc_chan_properties *chan_prop, |
| struct pm8921_adc_chan_result *chan_rslt) |
| { return -ENXIO; } |
| static inline int32_t pm8921_adc_scale_xtern_chgr_cur(int32_t adc_code, |
| const struct pm8921_adc_properties *adc_prop, |
| const struct pm8921_adc_chan_properties *chan_prop, |
| struct pm8921_adc_chan_result *chan_rslt) |
| { return -ENXIO; } |
| #endif |
| |
| /** |
| * struct pm8921_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 pm8921_adc_scale_fn { |
| int32_t (*chan) (int32_t, |
| const struct pm8921_adc_properties *, |
| const struct pm8921_adc_chan_properties *, |
| struct pm8921_adc_chan_result *); |
| }; |
| |
| /** |
| * struct pm8921_adc_amux - AMUX properties for individual channel |
| * @name: Channel name |
| * @channel_name: Channel in integer used from pm8921_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 pm8921_adc_amux { |
| char *name; |
| enum pm8921_adc_channels channel_name; |
| enum pm8921_adc_channel_scaling_param chan_path_prescaling; |
| enum pm8921_adc_amux_input_rsv adc_rsv; |
| enum pm8921_adc_decimation_type adc_decimation; |
| enum pm8921_adc_scale_fn_type adc_scale_fn; |
| }; |
| |
| /** |
| * struct pm8921_adc_arb_btm - PM8921 ADC BTM parameters |
| * @btm_prop: BTM parameters such as input resistance, voltage and Rtherm across |
| * the thermistor |
| * @btm_param: BTM temperature thresholds and interval to program the BTM |
| * @btm_channel_prop: Channel specific properties of the BTM channel |
| */ |
| struct pm8921_adc_arb_btm { |
| struct pm8921_adc_btm_prop *btm_prop; |
| struct pm8921_adc_arb_btm_param *btm_param; |
| struct pm8921_adc_btm_channel_properties *btm_channel_prop; |
| }; |
| |
| /** |
| * struct pm8921_adc_btm_channel_properties - PM8921 ADC BTM channel properties |
| * @btm_channel: Channel name |
| * @decimation: Sampling rate |
| * @btm_rsv: Input selection of Vref/GND |
| * @chan_prop: Channel properties for the BTM channel |
| */ |
| struct pm8921_adc_btm_channel_properties { |
| enum pm8921_adc_channels btm_channel; |
| enum pm8921_adc_decimation_type decimation; |
| enum pm8921_adc_amux_input_rsv btm_rsv; |
| struct pm8921_adc_chan_properties *chan_prop; |
| }; |
| |
| /** |
| * struct pm8921_adc_btm_prop - BTM specific resistors, voltage reference to |
| * calcluate the temperature across Rthm |
| * @rs1: Resistor of the Vref_therm |
| * @rs2: Resistor of BTM |
| * @r_thm: Resistance of the thermistor |
| * vref_thm: Voltage of vref_therm |
| */ |
| struct pm8921_adc_btm_prop { |
| uint32_t rs_1; |
| uint32_t rs_2; |
| uint32_t r_thm; |
| uint32_t vref_thm; |
| }; |
| |
| /** |
| * struct pm8921_adc_arb_btm_param - PM8921 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_cold_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 pm8921_adc_arb_btm_param { |
| uint32_t low_thr_temp; |
| uint32_t high_thr_temp; |
| uint32_t low_thr_voltage; |
| uint32_t high_thr_voltage; |
| int32_t interval; |
| void (*btm_warm_fn) (void); |
| void (*btm_cold_fn) (void); |
| }; |
| |
| int32_t pm8921_adc_batt_scaler(struct pm8921_adc_arb_btm_param *); |
| |
| /** |
| * struct pm8921_adc_platform_data - PM8921 ADC platform data |
| * @adc_prop: ADC specific parameters, voltage and channel setup |
| * @adc_channel: Channel properties of the ADC arbiter |
| * @adc_num_channel: Total number of chanels supported |
| */ |
| struct pm8921_adc_platform_data { |
| struct pm8921_adc_properties *adc_prop; |
| struct pm8921_adc_amux *adc_channel; |
| uint32_t adc_num_channel; |
| u32 adc_wakeup; |
| }; |
| |
| /* Public API */ |
| #if defined(CONFIG_MFD_PM8921_ADC) || defined(CONFIG_MFD_PM8921_ADC_MODULE) |
| /** |
| * pm8921_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 pm8921_adc_read(enum pm8921_adc_channels channel, |
| struct pm8921_adc_chan_result *result); |
| /** |
| * pm8921_mpp_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. |
| * @mpp_scale: The pre scale value to be performed to the input signal |
| * passed. Currently the pre-scale support is for 1 and 1/3. |
| */ |
| uint32_t pm8921_adc_mpp_read(enum pm8921_adc_mpp_channels channel, |
| struct pm8921_adc_chan_result *result, |
| enum pm8921_adc_premux_mpp_scale_type); |
| /** |
| * pm8921_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 |
| pm8921_btm_configure() api which sets |
| the temperature thresholds, interval |
| and functions to call when warm/cold |
| events are triggered. |
| * @param: none. |
| */ |
| uint32_t pm8921_adc_btm_start(void); |
| |
| /** |
| * pm8921_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 pm8921_adc_btm_end(void); |
| |
| /** |
| * pm8921_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 pm8921_adc_btm_configure(struct pm8921_adc_arb_btm_param *); |
| #else |
| static inline uint32_t pm8921_adc_read(uint32_t channel, |
| struct pm8921_adc_chan_result *result) |
| { return -ENXIO; } |
| static inline uint32_t pm8921_mpp_adc_read(uint32_t channel, |
| struct pm8921_adc_chan_result *result, |
| enum pm8921_adc_premux_mpp_scale_type scale) |
| { return -ENXIO; } |
| static inline uint32_t pm8921_adc_btm_start(void) |
| { return -ENXIO; } |
| static inline uint32_t pm8921_adc_btm_end(void) |
| { return -ENXIO; } |
| static inline uint32_t pm8921_adc_btm_configure( |
| struct pm8921_adc_arb_btm_param *param) |
| { return -ENXIO; } |
| #endif |
| |
| #endif /* MFD_PM8921_ADC_H */ |