// SPDX-License-Identifier: GPL-2.0-or-later /* * Support for the FTS Systemmonitoring Chip "Teutates" * * Copyright (C) 2016 Fujitsu Technology Solutions GmbH, * Thilo Cestonaro <[email protected]> */ #include <linux/err.h> #include <linux/hwmon.h> #include <linux/i2c.h> #include <linux/init.h> #include <linux/jiffies.h> #include <linux/math.h> #include <linux/module.h> #include <linux/mutex.h> #include <linux/slab.h> #include <linux/watchdog.h> #define FTS_DEVICE_ID_REG … #define FTS_DEVICE_REVISION_REG … #define FTS_DEVICE_STATUS_REG … #define FTS_SATELLITE_STATUS_REG … #define FTS_EVENT_STATUS_REG … #define FTS_GLOBAL_CONTROL_REG … #define FTS_DEVICE_DETECT_REG_1 … #define FTS_DEVICE_DETECT_REG_2 … #define FTS_DEVICE_DETECT_REG_3 … #define FTS_SENSOR_EVENT_REG … #define FTS_FAN_EVENT_REG … #define FTS_FAN_PRESENT_REG … #define FTS_POWER_ON_TIME_COUNTER_A … #define FTS_POWER_ON_TIME_COUNTER_B … #define FTS_POWER_ON_TIME_COUNTER_C … #define FTS_PAGE_SELECT_REG … #define FTS_WATCHDOG_TIME_PRESET … #define FTS_WATCHDOG_CONTROL … #define FTS_NO_FAN_SENSORS … #define FTS_NO_TEMP_SENSORS … #define FTS_NO_VOLT_SENSORS … #define FTS_FAN_SOURCE_INVALID … static const unsigned short normal_i2c[] = …; static const struct i2c_device_id fts_id[] = …; MODULE_DEVICE_TABLE(i2c, fts_id); enum WATCHDOG_RESOLUTION { … }; struct fts_data { … }; #define FTS_REG_FAN_INPUT(idx) … #define FTS_REG_FAN_SOURCE(idx) … #define FTS_REG_FAN_CONTROL(idx) … #define FTS_REG_TEMP_INPUT(idx) … #define FTS_REG_TEMP_CONTROL(idx) … #define FTS_REG_VOLT(idx) … /*****************************************************************************/ /* I2C Helper functions */ /*****************************************************************************/ static int fts_read_byte(struct i2c_client *client, unsigned short reg) { … } static int fts_write_byte(struct i2c_client *client, unsigned short reg, unsigned char value) { … } /*****************************************************************************/ /* Data Updater Helper function */ /*****************************************************************************/ static int fts_update_device(struct fts_data *data) { … } /*****************************************************************************/ /* Watchdog functions */ /*****************************************************************************/ static int fts_wd_set_resolution(struct fts_data *data, enum WATCHDOG_RESOLUTION resolution) { … } static int fts_wd_set_timeout(struct watchdog_device *wdd, unsigned int timeout) { … } static int fts_wd_start(struct watchdog_device *wdd) { … } static int fts_wd_stop(struct watchdog_device *wdd) { … } static const struct watchdog_info fts_wd_info = …; static const struct watchdog_ops fts_wd_ops = …; static int fts_watchdog_init(struct fts_data *data) { … } static umode_t fts_is_visible(const void *devdata, enum hwmon_sensor_types type, u32 attr, int channel) { … } static int fts_read(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel, long *val) { … } static int fts_write(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel, long val) { … } static const struct hwmon_ops fts_ops = …; static const struct hwmon_channel_info * const fts_info[] = …; static const struct hwmon_chip_info fts_chip_info = …; /*****************************************************************************/ /* Module initialization / remove functions */ /*****************************************************************************/ static int fts_detect(struct i2c_client *client, struct i2c_board_info *info) { … } static int fts_probe(struct i2c_client *client) { … } /*****************************************************************************/ /* Module Details */ /*****************************************************************************/ static struct i2c_driver fts_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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