// SPDX-License-Identifier: GPL-2.0 /* * Driver for Texas Instruments TMP512, TMP513 power monitor chips * * TMP513: * Thermal/Power Management with Triple Remote and * Local Temperature Sensor and Current Shunt Monitor * Datasheet: https://www.ti.com/lit/gpn/tmp513 * * TMP512: * Thermal/Power Management with Dual Remote * and Local Temperature Sensor and Current Shunt Monitor * Datasheet: https://www.ti.com/lit/gpn/tmp512 * * Copyright (C) 2019 Eric Tremblay <[email protected]> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License. */ #include <linux/bitops.h> #include <linux/bug.h> #include <linux/device.h> #include <linux/err.h> #include <linux/hwmon.h> #include <linux/i2c.h> #include <linux/init.h> #include <linux/math.h> #include <linux/module.h> #include <linux/property.h> #include <linux/regmap.h> #include <linux/slab.h> #include <linux/types.h> #include <linux/units.h> // Common register definition #define TMP51X_SHUNT_CONFIG … #define TMP51X_TEMP_CONFIG … #define TMP51X_STATUS … #define TMP51X_SMBUS_ALERT … #define TMP51X_SHUNT_CURRENT_RESULT … #define TMP51X_BUS_VOLTAGE_RESULT … #define TMP51X_POWER_RESULT … #define TMP51X_BUS_CURRENT_RESULT … #define TMP51X_LOCAL_TEMP_RESULT … #define TMP51X_REMOTE_TEMP_RESULT_1 … #define TMP51X_REMOTE_TEMP_RESULT_2 … #define TMP51X_SHUNT_CURRENT_H_LIMIT … #define TMP51X_SHUNT_CURRENT_L_LIMIT … #define TMP51X_BUS_VOLTAGE_H_LIMIT … #define TMP51X_BUS_VOLTAGE_L_LIMIT … #define TMP51X_POWER_LIMIT … #define TMP51X_LOCAL_TEMP_LIMIT … #define TMP51X_REMOTE_TEMP_LIMIT_1 … #define TMP51X_REMOTE_TEMP_LIMIT_2 … #define TMP51X_SHUNT_CALIBRATION … #define TMP51X_N_FACTOR_AND_HYST_1 … #define TMP51X_N_FACTOR_2 … #define TMP51X_MAN_ID_REG … #define TMP51X_DEVICE_ID_REG … // TMP513 specific register definition #define TMP513_REMOTE_TEMP_RESULT_3 … #define TMP513_REMOTE_TEMP_LIMIT_3 … #define TMP513_N_FACTOR_3 … // Common attrs, and NULL #define TMP51X_MANUFACTURER_ID … #define TMP512_DEVICE_ID … #define TMP513_DEVICE_ID … // Default config #define TMP51X_SHUNT_CONFIG_DEFAULT … #define TMP51X_SHUNT_VALUE_DEFAULT … #define TMP51X_VBUS_RANGE_DEFAULT … #define TMP51X_PGA_DEFAULT … #define TMP51X_MAX_REGISTER_ADDR … // Mask and shift #define CURRENT_SENSE_VOLTAGE_320_MASK … #define CURRENT_SENSE_VOLTAGE_160_MASK … #define CURRENT_SENSE_VOLTAGE_80_MASK … #define CURRENT_SENSE_VOLTAGE_40_MASK … #define TMP51X_BUS_VOLTAGE_MASK … #define TMP51X_NFACTOR_MASK … #define TMP51X_HYST_MASK … #define TMP51X_BUS_VOLTAGE_SHIFT … #define TMP51X_TEMP_SHIFT … // Alarms #define TMP51X_SHUNT_CURRENT_H_LIMIT_POS … #define TMP51X_SHUNT_CURRENT_L_LIMIT_POS … #define TMP51X_BUS_VOLTAGE_H_LIMIT_POS … #define TMP51X_BUS_VOLTAGE_L_LIMIT_POS … #define TMP51X_POWER_LIMIT_POS … #define TMP51X_LOCAL_TEMP_LIMIT_POS … #define TMP51X_REMOTE_TEMP_LIMIT_1_POS … #define TMP51X_REMOTE_TEMP_LIMIT_2_POS … #define TMP513_REMOTE_TEMP_LIMIT_3_POS … #define TMP51X_VBUS_RANGE_32V … #define TMP51X_VBUS_RANGE_16V … // Max and Min value #define MAX_BUS_VOLTAGE_32_LIMIT … #define MAX_BUS_VOLTAGE_16_LIMIT … // Max possible value is -256 to +256 but datasheet indicated -40 to 125. #define MAX_TEMP_LIMIT … #define MIN_TEMP_LIMIT … #define MAX_TEMP_HYST … #define TMP512_MAX_CHANNELS … #define TMP513_MAX_CHANNELS … #define TMP51X_TEMP_CONFIG_CONV_RATE … #define TMP51X_TEMP_CONFIG_RC … #define TMP51X_TEMP_CHANNEL_MASK(n) … #define TMP51X_TEMP_CONFIG_CONT … #define TMP51X_TEMP_CONFIG_DEFAULT(n) … static const u8 TMP51X_TEMP_INPUT[4] = …; static const u8 TMP51X_TEMP_CRIT[4] = …; static const u8 TMP51X_TEMP_CRIT_ALARM[4] = …; static const u8 TMP51X_TEMP_CRIT_HYST[4] = …; static const u8 TMP51X_CURR_INPUT[2] = …; static const struct regmap_config tmp51x_regmap_config = …; struct tmp51x_data { … }; // Set the shift based on the gain 8=4, 4=3, 2=2, 1=1 static inline u8 tmp51x_get_pga_shift(struct tmp51x_data *data) { … } static int tmp51x_get_value(struct tmp51x_data *data, u8 reg, u8 pos, unsigned int regval, long *val) { … } static int tmp51x_set_value(struct tmp51x_data *data, u8 reg, long val) { … } static u8 tmp51x_get_reg(enum hwmon_sensor_types type, u32 attr, int channel) { … } static u8 tmp51x_get_status_pos(enum hwmon_sensor_types type, u32 attr, int channel) { … } static int tmp51x_read(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel, long *val) { … } static int tmp51x_write(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel, long val) { … } static umode_t tmp51x_is_visible(const void *_data, enum hwmon_sensor_types type, u32 attr, int channel) { … } static const struct hwmon_channel_info * const tmp51x_info[] = …; static const struct hwmon_ops tmp51x_hwmon_ops = …; static const struct hwmon_chip_info tmp51x_chip_info = …; /* * Calibrate the tmp51x following the datasheet method */ static int tmp51x_calibrate(struct tmp51x_data *data) { … } /* * Initialize the configuration and calibration registers. */ static int tmp51x_init(struct tmp51x_data *data) { … } static const struct i2c_device_id tmp51x_id[] = …; MODULE_DEVICE_TABLE(i2c, tmp51x_id); static const struct of_device_id tmp51x_of_match[] = …; MODULE_DEVICE_TABLE(of, tmp51x_of_match); static int tmp51x_vbus_range_to_reg(struct device *dev, struct tmp51x_data *data) { … } static int tmp51x_pga_gain_to_reg(struct device *dev, struct tmp51x_data *data) { … } static int tmp51x_read_properties(struct device *dev, struct tmp51x_data *data) { … } static void tmp51x_use_default(struct tmp51x_data *data) { … } static int tmp51x_configure(struct device *dev, struct tmp51x_data *data) { … } static int tmp51x_probe(struct i2c_client *client) { … } static struct i2c_driver tmp51x_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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