/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (c) 2012-2020, The Linux Foundation. All rights reserved. */ #ifndef __QCOM_ADC_TM_H__ #define __QCOM_ADC_TM_H__ #include #include #include #include #include #include #include #include #define ADC_TM_DECIMATION_DEFAULT 2 #define ADC_TM_DECIMATION_SAMPLES_MAX 3 #define ADC_TM_DEF_AVG_SAMPLES 0 /* 1 sample */ #define ADC_TM_DEF_HW_SETTLE_TIME 0 /* 15 us */ #define ADC_TM_HW_SETTLE_SAMPLES_MAX 16 #define ADC_TM_AVG_SAMPLES_MAX 16 #define ADC_TM_TIMER1 3 /* 3.9ms */ #define ADC_TM_TIMER2 10 /* 1 second */ #define ADC_TM_TIMER3 4 /* 4 second */ #define ADC_HC_VDD_REF 1875000 #define MAX_PROP_NAME_LEN 32 #define R_PU_100K 100000 #define RATIO_MAX_ADC7 0x4000 #define MAX_CODE_VOLT 0x70e4 #define ADC_CHANNEL_OFFSET 8 #define V_CHAN(x) (((x).sid << ADC_CHANNEL_OFFSET) | (x).adc_ch) #define ADC_CHANNEL_MASK 0xff enum adc_cal_method { ADC_NO_CAL = 0, ADC_RATIO_CAL = 1, ADC_ABS_CAL = 2, ADC_CAL_SEL_NONE, }; enum adc_cal_val { ADC_TIMER_CAL = 0, ADC_NEW_CAL, ADC_CAL_VAL_NONE, }; enum adc_timer_select { ADC_TIMER_SEL_1 = 0, ADC_TIMER_SEL_2, ADC_TIMER_SEL_3, ADC_TIMER_SEL_NONE, }; enum adc_time_select { MEAS_INT_50MS = 0, MEAS_INT_100MS, MEAS_INT_1S, MEAS_INT_SET, MEAS_INT_NONE, }; /** * enum adc_tm_rscale_fn_type - Scaling function used to convert the * channels input voltage/temperature to corresponding ADC code that is * applied for thresholds. Check the corresponding channels scaling to * determine the appropriate temperature/voltage units that are passed * to the scaling function. Example battery follows the power supply * framework that needs its units to be in decidegreesC so it passes * deci-degreesC. PA_THERM clients pass the temperature in degrees. * The order below should match the one in the driver for * adc_tm_rscale_fn[]. */ enum adc_tm_rscale_fn_type { SCALE_R_ABSOLUTE = 0, SCALE_RSCALE_NONE, }; struct adc_tm_sensor { struct adc_tm_chip *chip; struct thermal_zone_device *tzd; enum adc_cal_val cal_val; enum adc_cal_method cal_sel; unsigned int hw_settle_time; unsigned int adc_ch; unsigned int btm_ch; unsigned int prescaling; unsigned int timer_select; unsigned int decimation; /* PMIC7 */ unsigned int fast_avg_samples; /* PMIC7 */ unsigned int sid; /* PMIC7 */ unsigned int meas_time; /* PMIC7 */ int64_t high_thr_voltage; /* PMIC7 */ int64_t low_thr_voltage; /* PMIC7 */ enum adc_tm_rscale_fn_type adc_rscale_fn; struct iio_channel *adc; struct list_head thr_list; bool non_thermal; bool high_thr_triggered; bool low_thr_triggered; int high_thr_en; /* PMIC7 */ int low_thr_en; /* PMIC7 */ int meas_en; /* PMIC7 */ struct workqueue_struct *req_wq; struct work_struct work; }; struct adc_tm_client_info { struct list_head list; struct adc_tm_param *param; int32_t low_thr_requested; int32_t high_thr_requested; bool notify_low_thr; bool notify_high_thr; bool high_thr_set; bool low_thr_set; enum adc_tm_state_request state_request; }; struct adc_tm_cmn_prop { unsigned int decimation; unsigned int fast_avg_samples; unsigned int timer1; unsigned int timer2; unsigned int timer3; }; struct adc_tm_ops { int (*get_temp)(struct adc_tm_sensor *sensor, int *temp); int (*init)(struct adc_tm_chip *chip, uint32_t dt_chans); int (*set_trips)(struct adc_tm_sensor *sensor, int low_temp, int high_temp); int32_t (*channel_measure)(struct adc_tm_chip *chip, struct adc_tm_param *param); int32_t (*disable_chan)(struct adc_tm_chip *chip, struct adc_tm_param *param); void (*notify)(struct adc_tm_sensor *adc_tm); int (*interrupts_reg)(struct adc_tm_chip *chip); int (*shutdown)(struct adc_tm_chip *chip); }; struct adc_tm_chip { struct device *dev; struct list_head list; struct regmap *regmap; u16 base; struct adc_tm_cmn_prop prop; spinlock_t adc_tm_lock; struct mutex adc_mutex_lock; const struct adc_tm_ops *ops; const struct adc_tm_data *data; unsigned int dt_channels; struct pmic_revid_data *pmic_rev_id; struct adc_tm_sensor sensor[0]; }; struct adc_tm_data { const struct adc_tm_ops *ops; const u32 full_scale_code_volt; unsigned int *decimation; unsigned int *hw_settle; }; extern const struct adc_tm_data data_adc_tm5; extern const struct adc_tm_data data_adc_tm7; extern const struct adc_tm_data data_adc_tm_rev2; /** * Channel index for the corresponding index to adc_tm_channel_select */ enum adc_tm_channel_num { ADC_TM_CHAN0 = 0, ADC_TM_CHAN1, ADC_TM_CHAN2, ADC_TM_CHAN3, ADC_TM_CHAN4, ADC_TM_CHAN5, ADC_TM_CHAN6, ADC_TM_CHAN7, ADC_TM_CHAN_NONE }; /** * Channel selection registers for each of the configurable measurements * Channels allotment is set at device config for a channel. */ enum adc_tm_channel_sel { ADC_TM_M0_ADC_CH_SEL_CTL = 0x60, ADC_TM_M1_ADC_CH_SEL_CTL = 0x68, ADC_TM_M2_ADC_CH_SEL_CTL = 0x70, ADC_TM_M3_ADC_CH_SEL_CTL = 0x78, ADC_TM_M4_ADC_CH_SEL_CTL = 0x80, ADC_TM_M5_ADC_CH_SEL_CTL = 0x88, ADC_TM_M6_ADC_CH_SEL_CTL = 0x90, ADC_TM_M7_ADC_CH_SEL_CTL = 0x98, ADC_TM_CH_SELECT_NONE }; /** * enum adc_tm_fast_avg_ctl - Provides ability to obtain single result * from the ADC that is an average of multiple measurement * samples. Select number of samples for use in fast * average mode (i.e. 2 ^ value). * %ADC_FAST_AVG_SAMPLE_1: 0x0 = 1 * %ADC_FAST_AVG_SAMPLE_2: 0x1 = 2 * %ADC_FAST_AVG_SAMPLE_4: 0x2 = 4 * %ADC_FAST_AVG_SAMPLE_8: 0x3 = 8 * %ADC_FAST_AVG_SAMPLE_16: 0x4 = 16 */ enum qpnp_adc_fast_avg_ctl { ADC_FAST_AVG_SAMPLE_1 = 0, ADC_FAST_AVG_SAMPLE_2, ADC_FAST_AVG_SAMPLE_4, ADC_FAST_AVG_SAMPLE_8, ADC_FAST_AVG_SAMPLE_16, ADC_FAST_AVG_SAMPLE_NONE, }; struct adc_tm_trip_reg_type { enum adc_tm_channel_sel btm_amux_ch; uint16_t low_thr_lsb_addr; uint16_t low_thr_msb_addr; uint16_t high_thr_lsb_addr; uint16_t high_thr_msb_addr; u8 multi_meas_en; u8 low_thr_int_chan_en; u8 high_thr_int_chan_en; u8 meas_interval_ctl; }; /** * struct adc_tm_config - Represent ADC Thermal Monitor configuration. * @channel: ADC channel for which thermal monitoring is requested. * @adc_code: The pre-calibrated digital output of a given ADC releative to the * ADC reference. * @high_thr_temp: Temperature at which high threshold notification is required. * @low_thr_temp: Temperature at which low threshold notification is required. * @low_thr_voltage : Low threshold voltage ADC code used for reverse * calibration. * @high_thr_voltage: High threshold voltage ADC code used for reverse * calibration. */ struct adc_tm_config { int channel; int adc_code; int prescal; int high_thr_temp; int low_thr_temp; int64_t high_thr_voltage; int64_t low_thr_voltage; }; /** * struct adc_tm_reverse_scale_fn - Reverse scaling prototype * @chan: Function pointer to one of the scaling functions * which takes the adc properties and returns the physical result */ struct adc_tm_reverse_scale_fn { int32_t (*chan)(const struct adc_tm_data *data, struct adc_tm_config *tm_config); }; struct adc_tm_reverse_scale_fn_adc7 { int32_t (*chan)(struct adc_tm_config *tm_config); }; /** * struct 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 adc_tm_map_pt { int32_t x; int32_t y; }; /** * struct adc_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 adc_tm_linear_graph { s32 dy; s32 dx; s32 gnd; }; int therm_fwd_scale(int64_t code, uint32_t adc_hc_vdd_ref_mv, const struct adc_tm_data *data); void adc_tm_scale_therm_voltage_100k(struct adc_tm_config *param, const struct adc_tm_data *data); int32_t adc_tm_absolute_rthr(const struct adc_tm_data *data, struct adc_tm_config *tm_config); int therm_fwd_scale_adc7(int64_t code); void adc_tm_scale_therm_voltage_100k_adc7(struct adc_tm_config *param); int32_t adc_tm_absolute_rthr_adc7(struct adc_tm_config *tm_config); int adc_tm_is_valid(struct adc_tm_chip *chip); #endif /* __QCOM_ADC_TM_H__ */