123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177 |
- /* SPDX-License-Identifier: GPL-2.0 */
- /*
- * Code shared between the different Qualcomm PMIC voltage ADCs
- */
- #ifndef QCOM_VADC_COMMON_H
- #define QCOM_VADC_COMMON_H
- #define VADC_CONV_TIME_MIN_US 2000
- #define VADC_CONV_TIME_MAX_US 2100
- /* Min ADC code represents 0V */
- #define VADC_MIN_ADC_CODE 0x6000
- /* Max ADC code represents full-scale range of 1.8V */
- #define VADC_MAX_ADC_CODE 0xa800
- #define VADC_ABSOLUTE_RANGE_UV 625000
- #define VADC_RATIOMETRIC_RANGE 1800
- #define VADC_DEF_PRESCALING 0 /* 1:1 */
- #define VADC_DEF_DECIMATION 0 /* 512 */
- #define VADC_DEF_HW_SETTLE_TIME 0 /* 0 us */
- #define VADC_DEF_AVG_SAMPLES 0 /* 1 sample */
- #define VADC_DEF_CALIB_TYPE VADC_CALIB_ABSOLUTE
- #define VADC_DECIMATION_MIN 512
- #define VADC_DECIMATION_MAX 4096
- #define ADC5_DEF_VBAT_PRESCALING 1 /* 1:3 */
- #define ADC5_DECIMATION_SHORT 250
- #define ADC5_DECIMATION_MEDIUM 420
- #define ADC5_DECIMATION_LONG 840
- /* Default decimation - 1024 for rev2, 840 for pmic5 */
- #define ADC5_DECIMATION_DEFAULT 2
- #define ADC5_DECIMATION_SAMPLES_MAX 3
- #define VADC_HW_SETTLE_DELAY_MAX 10000
- #define VADC_HW_SETTLE_SAMPLES_MAX 16
- #define VADC_AVG_SAMPLES_MAX 512
- #define ADC5_AVG_SAMPLES_MAX 16
- #define PMIC5_CHG_TEMP_SCALE_FACTOR 377500
- #define PMIC5_SMB_TEMP_CONSTANT 419400
- #define PMIC5_SMB_TEMP_SCALE_FACTOR 356
- #define PMI_CHG_SCALE_1 -138890
- #define PMI_CHG_SCALE_2 391750000000LL
- #define VADC5_MAX_CODE 0x7fff
- #define ADC5_FULL_SCALE_CODE 0x70e4
- #define ADC5_USR_DATA_CHECK 0x8000
- #define R_PU_100K 100000
- #define RATIO_MAX_ADC7 BIT(14)
- #define DIE_TEMP_ADC7_SCALE_1 -60000
- #define DIE_TEMP_ADC7_SCALE_2 20000
- #define DIE_TEMP_ADC7_SCALE_FACTOR 1000
- #define DIE_TEMP_ADC7_MAX 160000
- /**
- * struct vadc_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 vadc_map_pt {
- s32 x;
- s32 y;
- };
- /*
- * VADC_CALIB_ABSOLUTE: uses the 625mV and 1.25V as reference channels.
- * VADC_CALIB_RATIOMETRIC: uses the reference voltage (1.8V) and GND for
- * calibration.
- */
- enum vadc_calibration {
- VADC_CALIB_ABSOLUTE = 0,
- VADC_CALIB_RATIOMETRIC
- };
- /**
- * struct vadc_linear_graph - Represent ADC characteristics.
- * @dy: numerator slope to calculate the gain.
- * @dx: denominator slope to calculate the gain.
- * @gnd: A/D word of the ground reference used for the channel.
- *
- * Each ADC device has different offset and gain parameters which are
- * computed to calibrate the device.
- */
- struct vadc_linear_graph {
- s32 dy;
- s32 dx;
- s32 gnd;
- };
- /**
- * struct vadc_prescale_ratio - Represent scaling ratio for ADC input.
- * @num: the inverse numerator of the gain applied to the input channel.
- * @den: the inverse denominator of the gain applied to the input channel.
- */
- struct vadc_prescale_ratio {
- u32 num;
- u32 den;
- };
- /**
- * enum vadc_scale_fn_type - Scaling function to convert ADC code to
- * physical scaled units for the channel.
- * SCALE_DEFAULT: Default scaling to convert raw adc code to voltage (uV).
- * SCALE_THERM_100K_PULLUP: Returns temperature in millidegC.
- * Uses a mapping table with 100K pullup.
- * SCALE_PMIC_THERM: Returns result in milli degree's Centigrade.
- * SCALE_XOTHERM: Returns XO thermistor voltage in millidegC.
- * SCALE_PMI_CHG_TEMP: Conversion for PMI CHG temp
- * SCALE_HW_CALIB_DEFAULT: Default scaling to convert raw adc code to
- * voltage (uV) with hardware applied offset/slope values to adc code.
- * SCALE_HW_CALIB_THERM_100K_PULLUP: Returns temperature in millidegC using
- * lookup table. The hardware applies offset/slope to adc code.
- * SCALE_HW_CALIB_XOTHERM: Returns XO thermistor voltage in millidegC using
- * 100k pullup. The hardware applies offset/slope to adc code.
- * SCALE_HW_CALIB_THERM_100K_PU_PM7: Returns temperature in millidegC using
- * lookup table for PMIC7. The hardware applies offset/slope to adc code.
- * SCALE_HW_CALIB_PMIC_THERM: Returns result in milli degree's Centigrade.
- * The hardware applies offset/slope to adc code.
- * SCALE_HW_CALIB_PMIC_THERM: Returns result in milli degree's Centigrade.
- * The hardware applies offset/slope to adc code. This is for PMIC7.
- * SCALE_HW_CALIB_PM5_CHG_TEMP: Returns result in millidegrees for PMIC5
- * charger temperature.
- * SCALE_HW_CALIB_PM5_SMB_TEMP: Returns result in millidegrees for PMIC5
- * SMB1390 temperature.
- */
- enum vadc_scale_fn_type {
- SCALE_DEFAULT = 0,
- SCALE_THERM_100K_PULLUP,
- SCALE_PMIC_THERM,
- SCALE_XOTHERM,
- SCALE_PMI_CHG_TEMP,
- SCALE_HW_CALIB_DEFAULT,
- SCALE_HW_CALIB_THERM_100K_PULLUP,
- SCALE_HW_CALIB_XOTHERM,
- SCALE_HW_CALIB_THERM_100K_PU_PM7,
- SCALE_HW_CALIB_PMIC_THERM,
- SCALE_HW_CALIB_PMIC_THERM_PM7,
- SCALE_HW_CALIB_PM5_CHG_TEMP,
- SCALE_HW_CALIB_PM5_SMB_TEMP,
- SCALE_HW_CALIB_INVALID,
- };
- struct adc5_data {
- const u32 full_scale_code_volt;
- const u32 full_scale_code_cur;
- const struct adc5_channels *adc_chans;
- const struct iio_info *info;
- unsigned int *decimation;
- unsigned int *hw_settle_1;
- unsigned int *hw_settle_2;
- };
- int qcom_vadc_scale(enum vadc_scale_fn_type scaletype,
- const struct vadc_linear_graph *calib_graph,
- const struct vadc_prescale_ratio *prescale,
- bool absolute,
- u16 adc_code, int *result_mdec);
- struct qcom_adc5_scale_type {
- int (*scale_fn)(const struct vadc_prescale_ratio *prescale,
- const struct adc5_data *data, u16 adc_code, int *result);
- };
- int qcom_adc5_hw_scale(enum vadc_scale_fn_type scaletype,
- const struct vadc_prescale_ratio *prescale,
- const struct adc5_data *data,
- u16 adc_code, int *result_mdec);
- int qcom_vadc_decimation_from_dt(u32 value);
- #endif /* QCOM_VADC_COMMON_H */
|