// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (c) 2020 Sartura Ltd. * * Driver for the TI TPS23861 PoE PSE. * * Author: Robert Marko <[email protected]> */ #include <linux/bitfield.h> #include <linux/debugfs.h> #include <linux/delay.h> #include <linux/hwmon-sysfs.h> #include <linux/hwmon.h> #include <linux/i2c.h> #include <linux/module.h> #include <linux/of.h> #include <linux/regmap.h> #define TEMPERATURE … #define INPUT_VOLTAGE_LSB … #define INPUT_VOLTAGE_MSB … #define PORT_1_CURRENT_LSB … #define PORT_1_CURRENT_MSB … #define PORT_1_VOLTAGE_LSB … #define PORT_1_VOLTAGE_MSB … #define PORT_2_CURRENT_LSB … #define PORT_2_CURRENT_MSB … #define PORT_2_VOLTAGE_LSB … #define PORT_2_VOLTAGE_MSB … #define PORT_3_CURRENT_LSB … #define PORT_3_CURRENT_MSB … #define PORT_3_VOLTAGE_LSB … #define PORT_3_VOLTAGE_MSB … #define PORT_4_CURRENT_LSB … #define PORT_4_CURRENT_MSB … #define PORT_4_VOLTAGE_LSB … #define PORT_4_VOLTAGE_MSB … #define PORT_N_CURRENT_LSB_OFFSET … #define PORT_N_VOLTAGE_LSB_OFFSET … #define VOLTAGE_CURRENT_MASK … #define PORT_1_RESISTANCE_LSB … #define PORT_1_RESISTANCE_MSB … #define PORT_2_RESISTANCE_LSB … #define PORT_2_RESISTANCE_MSB … #define PORT_3_RESISTANCE_LSB … #define PORT_3_RESISTANCE_MSB … #define PORT_4_RESISTANCE_LSB … #define PORT_4_RESISTANCE_MSB … #define PORT_N_RESISTANCE_LSB_OFFSET … #define PORT_RESISTANCE_MASK … #define PORT_RESISTANCE_RSN_MASK … #define PORT_RESISTANCE_RSN_OTHER … #define PORT_RESISTANCE_RSN_LOW … #define PORT_RESISTANCE_RSN_OPEN … #define PORT_RESISTANCE_RSN_SHORT … #define PORT_1_STATUS … #define PORT_2_STATUS … #define PORT_3_STATUS … #define PORT_4_STATUS … #define PORT_STATUS_CLASS_MASK … #define PORT_STATUS_DETECT_MASK … #define PORT_CLASS_UNKNOWN … #define PORT_CLASS_1 … #define PORT_CLASS_2 … #define PORT_CLASS_3 … #define PORT_CLASS_4 … #define PORT_CLASS_RESERVED … #define PORT_CLASS_0 … #define PORT_CLASS_OVERCURRENT … #define PORT_CLASS_MISMATCH … #define PORT_DETECT_UNKNOWN … #define PORT_DETECT_SHORT … #define PORT_DETECT_RESERVED … #define PORT_DETECT_RESISTANCE_LOW … #define PORT_DETECT_RESISTANCE_OK … #define PORT_DETECT_RESISTANCE_HIGH … #define PORT_DETECT_OPEN_CIRCUIT … #define PORT_DETECT_RESERVED_2 … #define PORT_DETECT_MOSFET_FAULT … #define PORT_DETECT_LEGACY … /* Measurment beyond clamp voltage */ #define PORT_DETECT_CAPACITANCE_INVALID_BEYOND … /* Insufficient voltage delta */ #define PORT_DETECT_CAPACITANCE_INVALID_DELTA … #define PORT_DETECT_CAPACITANCE_OUT_OF_RANGE … #define POE_PLUS … #define OPERATING_MODE … #define OPERATING_MODE_OFF … #define OPERATING_MODE_MANUAL … #define OPERATING_MODE_SEMI … #define OPERATING_MODE_AUTO … #define OPERATING_MODE_PORT_1_MASK … #define OPERATING_MODE_PORT_2_MASK … #define OPERATING_MODE_PORT_3_MASK … #define OPERATING_MODE_PORT_4_MASK … #define DETECT_CLASS_RESTART … #define POWER_ENABLE … #define TPS23861_NUM_PORTS … #define TPS23861_GENERAL_MASK_1 … #define TPS23861_CURRENT_SHUNT_MASK … #define TEMPERATURE_LSB … #define VOLTAGE_LSB … #define SHUNT_RESISTOR_DEFAULT … #define CURRENT_LSB_250 … #define CURRENT_LSB_255 … #define RESISTANCE_LSB … #define RESISTANCE_LSB_LOW … struct tps23861_data { … }; static const struct regmap_config tps23861_regmap_config = …; static int tps23861_read_temp(struct tps23861_data *data, long *val) { … } static int tps23861_read_voltage(struct tps23861_data *data, int channel, long *val) { … } static int tps23861_read_current(struct tps23861_data *data, int channel, long *val) { … } static int tps23861_port_disable(struct tps23861_data *data, int channel) { … } static int tps23861_port_enable(struct tps23861_data *data, int channel) { … } static umode_t tps23861_is_visible(const void *data, enum hwmon_sensor_types type, u32 attr, int channel) { … } static int tps23861_write(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel, long val) { … } static int tps23861_read(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel, long *val) { … } static const char * const tps23861_port_label[] = …; static int tps23861_read_string(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel, const char **str) { … } static const struct hwmon_channel_info * const tps23861_info[] = …; static const struct hwmon_ops tps23861_hwmon_ops = …; static const struct hwmon_chip_info tps23861_chip_info = …; static char *port_operating_mode_string(uint8_t mode_reg, unsigned int port) { … } static char *port_detect_status_string(uint8_t status_reg) { … } static char *port_class_status_string(uint8_t status_reg) { … } static char *port_poe_plus_status_string(uint8_t poe_plus, unsigned int port) { … } static int tps23861_port_resistance(struct tps23861_data *data, int port) { … } static int tps23861_port_status_show(struct seq_file *s, void *data) { … } DEFINE_SHOW_ATTRIBUTE(…); static void tps23861_init_debugfs(struct tps23861_data *data, struct device *hwmon_dev) { … } static int tps23861_probe(struct i2c_client *client) { … } static void tps23861_remove(struct i2c_client *client) { … } static const struct of_device_id __maybe_unused tps23861_of_match[] = …; MODULE_DEVICE_TABLE(of, tps23861_of_match); static struct i2c_driver tps23861_driver = …; module_i2c_driver(…) …; MODULE_LICENSE(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …;
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