| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Serge Semin | 472 | 100.00% | 2 | 100.00% |
| Total | 472 | 2 |
/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (C) 2020 BAIKAL ELECTRONICS, JSC * * Baikal-T1 Process, Voltage, Temperature sensor driver */ #ifndef __HWMON_BT1_PVT_H__ #define __HWMON_BT1_PVT_H__ #include <linux/completion.h> #include <linux/hwmon.h> #include <linux/kernel.h> #include <linux/ktime.h> #include <linux/mutex.h> #include <linux/seqlock.h> /* Baikal-T1 PVT registers and their bitfields */ #define PVT_CTRL 0x00 #define PVT_CTRL_EN BIT(0) #define PVT_CTRL_MODE_FLD 1 #define PVT_CTRL_MODE_MASK GENMASK(3, PVT_CTRL_MODE_FLD) #define PVT_CTRL_MODE_TEMP 0x0 #define PVT_CTRL_MODE_VOLT 0x1 #define PVT_CTRL_MODE_LVT 0x2 #define PVT_CTRL_MODE_HVT 0x4 #define PVT_CTRL_MODE_SVT 0x6 #define PVT_CTRL_TRIM_FLD 4 #define PVT_CTRL_TRIM_MASK GENMASK(8, PVT_CTRL_TRIM_FLD) #define PVT_DATA 0x04 #define PVT_DATA_VALID BIT(10) #define PVT_DATA_DATA_FLD 0 #define PVT_DATA_DATA_MASK GENMASK(9, PVT_DATA_DATA_FLD) #define PVT_TTHRES 0x08 #define PVT_VTHRES 0x0C #define PVT_LTHRES 0x10 #define PVT_HTHRES 0x14 #define PVT_STHRES 0x18 #define PVT_THRES_LO_FLD 0 #define PVT_THRES_LO_MASK GENMASK(9, PVT_THRES_LO_FLD) #define PVT_THRES_HI_FLD 10 #define PVT_THRES_HI_MASK GENMASK(19, PVT_THRES_HI_FLD) #define PVT_TTIMEOUT 0x1C #define PVT_INTR_STAT 0x20 #define PVT_INTR_MASK 0x24 #define PVT_RAW_INTR_STAT 0x28 #define PVT_INTR_DVALID BIT(0) #define PVT_INTR_TTHRES_LO BIT(1) #define PVT_INTR_TTHRES_HI BIT(2) #define PVT_INTR_VTHRES_LO BIT(3) #define PVT_INTR_VTHRES_HI BIT(4) #define PVT_INTR_LTHRES_LO BIT(5) #define PVT_INTR_LTHRES_HI BIT(6) #define PVT_INTR_HTHRES_LO BIT(7) #define PVT_INTR_HTHRES_HI BIT(8) #define PVT_INTR_STHRES_LO BIT(9) #define PVT_INTR_STHRES_HI BIT(10) #define PVT_INTR_ALL GENMASK(10, 0) #define PVT_CLR_INTR 0x2C /* * PVT sensors-related limits and default values * @PVT_TEMP_MIN: Minimal temperature in millidegrees of Celsius. * @PVT_TEMP_MAX: Maximal temperature in millidegrees of Celsius. * @PVT_TEMP_CHS: Number of temperature hwmon channels. * @PVT_VOLT_MIN: Minimal voltage in mV. * @PVT_VOLT_MAX: Maximal voltage in mV. * @PVT_VOLT_CHS: Number of voltage hwmon channels. * @PVT_DATA_MIN: Minimal PVT raw data value. * @PVT_DATA_MAX: Maximal PVT raw data value. * @PVT_TRIM_MIN: Minimal temperature sensor trim value. * @PVT_TRIM_MAX: Maximal temperature sensor trim value. * @PVT_TRIM_DEF: Default temperature sensor trim value (set a proper value * when one is determined for Baikal-T1 SoC). * @PVT_TRIM_TEMP: Maximum temperature encoded by the trim factor. * @PVT_TRIM_STEP: Temperature stride corresponding to the trim value. * @PVT_TOUT_MIN: Minimal timeout between samples in nanoseconds. * @PVT_TOUT_DEF: Default data measurements timeout. In case if alarms are * activated the PVT IRQ is enabled to be raised after each * conversion in order to have the thresholds checked and the * converted value cached. Too frequent conversions may cause * the system CPU overload. Lets set the 50ms delay between * them by default to prevent this. */ #define PVT_TEMP_MIN -48380L #define PVT_TEMP_MAX 147438L #define PVT_TEMP_CHS 1 #define PVT_VOLT_MIN 620L #define PVT_VOLT_MAX 1168L #define PVT_VOLT_CHS 4 #define PVT_DATA_MIN 0 #define PVT_DATA_MAX (PVT_DATA_DATA_MASK >> PVT_DATA_DATA_FLD) #define PVT_TRIM_MIN 0 #define PVT_TRIM_MAX (PVT_CTRL_TRIM_MASK >> PVT_CTRL_TRIM_FLD) #define PVT_TRIM_TEMP 7130 #define PVT_TRIM_STEP (PVT_TRIM_TEMP / PVT_TRIM_MAX) #define PVT_TRIM_DEF 0 #define PVT_TOUT_MIN (NSEC_PER_SEC / 3000) #if defined(CONFIG_SENSORS_BT1_PVT_ALARMS) # define PVT_TOUT_DEF 60000 #else # define PVT_TOUT_DEF 0 #endif /* * enum pvt_sensor_type - Baikal-T1 PVT sensor types (correspond to each PVT * sampling mode) * @PVT_SENSOR*: helpers to traverse the sensors in loops. * @PVT_TEMP: PVT Temperature sensor. * @PVT_VOLT: PVT Voltage sensor. * @PVT_LVT: PVT Low-Voltage threshold sensor. * @PVT_HVT: PVT High-Voltage threshold sensor. * @PVT_SVT: PVT Standard-Voltage threshold sensor. */ enum pvt_sensor_type { PVT_SENSOR_FIRST, PVT_TEMP = PVT_SENSOR_FIRST, PVT_VOLT, PVT_LVT, PVT_HVT, PVT_SVT, PVT_SENSOR_LAST = PVT_SVT, PVT_SENSORS_NUM }; /* * enum pvt_clock_type - Baikal-T1 PVT clocks. * @PVT_CLOCK_APB: APB clock. * @PVT_CLOCK_REF: PVT reference clock. */ enum pvt_clock_type { PVT_CLOCK_APB, PVT_CLOCK_REF, PVT_CLOCK_NUM }; /* * struct pvt_sensor_info - Baikal-T1 PVT sensor informational structure * @channel: Sensor channel ID. * @label: hwmon sensor label. * @mode: PVT mode corresponding to the channel. * @thres_base: upper and lower threshold values of the sensor. * @thres_sts_lo: low threshold status bitfield. * @thres_sts_hi: high threshold status bitfield. * @type: Sensor type. * @attr_min_alarm: Min alarm attribute ID. * @attr_min_alarm: Max alarm attribute ID. */ struct pvt_sensor_info { int channel; const char *label; u32 mode; unsigned long thres_base; u32 thres_sts_lo; u32 thres_sts_hi; enum hwmon_sensor_types type; u32 attr_min_alarm; u32 attr_max_alarm; }; #define PVT_SENSOR_INFO(_ch, _label, _type, _mode, _thres) \ { \ .channel = _ch, \ .label = _label, \ .mode = PVT_CTRL_MODE_ ##_mode, \ .thres_base = PVT_ ##_thres, \ .thres_sts_lo = PVT_INTR_ ##_thres## _LO, \ .thres_sts_hi = PVT_INTR_ ##_thres## _HI, \ .type = _type, \ .attr_min_alarm = _type## _min, \ .attr_max_alarm = _type## _max, \ } /* * struct pvt_cache - PVT sensors data cache * @data: data cache in raw format. * @thres_sts_lo: low threshold status saved on the previous data conversion. * @thres_sts_hi: high threshold status saved on the previous data conversion. * @data_seqlock: cached data seq-lock. * @conversion: data conversion completion. */ struct pvt_cache { u32 data; #if defined(CONFIG_SENSORS_BT1_PVT_ALARMS) seqlock_t data_seqlock; u32 thres_sts_lo; u32 thres_sts_hi; #else struct completion conversion; #endif }; /* * struct pvt_hwmon - Baikal-T1 PVT private data * @dev: device structure of the PVT platform device. * @hwmon: hwmon device structure. * @regs: pointer to the Baikal-T1 PVT registers region. * @irq: PVT events IRQ number. * @clks: Array of the PVT clocks descriptor (APB/ref clocks). * @ref_clk: Pointer to the reference clocks descriptor. * @iface_mtx: Generic interface mutex (used to lock the alarm registers * when the alarms enabled, or the data conversion interface * if alarms are disabled). * @sensor: current PVT sensor the data conversion is being performed for. * @cache: data cache descriptor. * @timeout: conversion timeout cache. */ struct pvt_hwmon { struct device *dev; struct device *hwmon; void __iomem *regs; int irq; struct clk_bulk_data clks[PVT_CLOCK_NUM]; struct mutex iface_mtx; enum pvt_sensor_type sensor; struct pvt_cache cache[PVT_SENSORS_NUM]; ktime_t timeout; }; /* * struct pvt_poly_term - a term descriptor of the PVT data translation * polynomial * @deg: degree of the term. * @coef: multiplication factor of the term. * @divider: distributed divider per each degree. * @divider_leftover: divider leftover, which couldn't be redistributed. */ struct pvt_poly_term { unsigned int deg; long coef; long divider; long divider_leftover; }; /* * struct pvt_poly - PVT data translation polynomial descriptor * @total_divider: total data divider. * @terms: polynomial terms up to a free one. */ struct pvt_poly { long total_divider; struct pvt_poly_term terms[]; }; #endif /* __HWMON_BT1_PVT_H__ */
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