// SPDX-License-Identifier: GPL-2.0-or-later /* Texas Instruments TMP108 SMBus temperature sensor driver * * Copyright (C) 2016 John Muir <[email protected]> */ #include <linux/delay.h> #include <linux/device.h> #include <linux/err.h> #include <linux/hwmon.h> #include <linux/hwmon-sysfs.h> #include <linux/module.h> #include <linux/mutex.h> #include <linux/of.h> #include <linux/i2c.h> #include <linux/init.h> #include <linux/jiffies.h> #include <linux/regmap.h> #include <linux/slab.h> #define DRIVER_NAME … #define TMP108_REG_TEMP … #define TMP108_REG_CONF … #define TMP108_REG_TLOW … #define TMP108_REG_THIGH … #define TMP108_TEMP_MIN_MC … #define TMP108_TEMP_MAX_MC … /* Configuration register bits. * Note: these bit definitions are byte swapped. */ #define TMP108_CONF_M0 … #define TMP108_CONF_M1 … #define TMP108_CONF_TM … #define TMP108_CONF_FL … #define TMP108_CONF_FH … #define TMP108_CONF_CR0 … #define TMP108_CONF_CR1 … #define TMP108_CONF_ID … #define TMP108_CONF_HYS0 … #define TMP108_CONF_HYS1 … #define TMP108_CONF_POL … /* Defaults set by the hardware upon reset. */ #define TMP108_CONF_DEFAULTS … /* These bits are read-only. */ #define TMP108_CONF_READ_ONLY … #define TMP108_CONF_MODE_MASK … #define TMP108_MODE_SHUTDOWN … #define TMP108_MODE_ONE_SHOT … #define TMP108_MODE_CONTINUOUS … /* When M1 is set, M0 is ignored. */ #define TMP108_CONF_CONVRATE_MASK … #define TMP108_CONVRATE_0P25HZ … #define TMP108_CONVRATE_1HZ … #define TMP108_CONVRATE_4HZ … #define TMP108_CONVRATE_16HZ … #define TMP108_CONF_HYSTERESIS_MASK … #define TMP108_HYSTERESIS_0C … #define TMP108_HYSTERESIS_1C … #define TMP108_HYSTERESIS_2C … #define TMP108_HYSTERESIS_4C … #define TMP108_CONVERSION_TIME_MS … struct tmp108 { … }; /* convert 12-bit TMP108 register value to milliCelsius */ static inline int tmp108_temp_reg_to_mC(s16 val) { … } /* convert milliCelsius to left adjusted 12-bit TMP108 register value */ static inline u16 tmp108_mC_to_temp_reg(int val) { … } static int tmp108_read(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel, long *temp) { … } static int tmp108_write(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel, long temp) { … } static umode_t tmp108_is_visible(const void *data, enum hwmon_sensor_types type, u32 attr, int channel) { … } static const struct hwmon_channel_info * const tmp108_info[] = …; static const struct hwmon_ops tmp108_hwmon_ops = …; static const struct hwmon_chip_info tmp108_chip_info = …; static void tmp108_restore_config(void *data) { … } static bool tmp108_is_writeable_reg(struct device *dev, unsigned int reg) { … } static bool tmp108_is_volatile_reg(struct device *dev, unsigned int reg) { … } static const struct regmap_config tmp108_regmap_config = …; static int tmp108_probe(struct i2c_client *client) { … } static int tmp108_suspend(struct device *dev) { … } static int tmp108_resume(struct device *dev) { … } static DEFINE_SIMPLE_DEV_PM_OPS(tmp108_dev_pm_ops, tmp108_suspend, tmp108_resume); static const struct i2c_device_id tmp108_i2c_ids[] = …; MODULE_DEVICE_TABLE(i2c, tmp108_i2c_ids); #ifdef CONFIG_OF static const struct of_device_id tmp108_of_ids[] = …; MODULE_DEVICE_TABLE(of, tmp108_of_ids); #endif static struct i2c_driver tmp108_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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