// SPDX-License-Identifier: GPL-2.0-only /* * tmp007.c - Support for TI TMP007 IR thermopile sensor with integrated math engine * * Copyright (c) 2017 Manivannan Sadhasivam <[email protected]> * * Driver for the Texas Instruments I2C 16-bit IR thermopile sensor * * (7-bit I2C slave address (0x40 - 0x47), changeable via ADR pins) * * Note: * 1. This driver assumes that the sensor has been calibrated beforehand * 2. Limit threshold events are enabled at the start * 3. Operating mode: INT */ #include <linux/err.h> #include <linux/i2c.h> #include <linux/delay.h> #include <linux/module.h> #include <linux/pm.h> #include <linux/bitops.h> #include <linux/mod_devicetable.h> #include <linux/irq.h> #include <linux/interrupt.h> #include <linux/iio/iio.h> #include <linux/iio/sysfs.h> #include <linux/iio/events.h> #define TMP007_TDIE … #define TMP007_CONFIG … #define TMP007_TOBJECT … #define TMP007_STATUS … #define TMP007_STATUS_MASK … #define TMP007_TOBJ_HIGH_LIMIT … #define TMP007_TOBJ_LOW_LIMIT … #define TMP007_TDIE_HIGH_LIMIT … #define TMP007_TDIE_LOW_LIMIT … #define TMP007_MANUFACTURER_ID … #define TMP007_DEVICE_ID … #define TMP007_CONFIG_CONV_EN … #define TMP007_CONFIG_TC_EN … #define TMP007_CONFIG_CR_MASK … #define TMP007_CONFIG_ALERT_EN … #define TMP007_CONFIG_CR_SHIFT … /* Status register flags */ #define TMP007_STATUS_ALERT … #define TMP007_STATUS_CONV_READY … #define TMP007_STATUS_OHF … #define TMP007_STATUS_OLF … #define TMP007_STATUS_LHF … #define TMP007_STATUS_LLF … #define TMP007_STATUS_DATA_VALID … #define TMP007_MANUFACTURER_MAGIC … #define TMP007_DEVICE_MAGIC … #define TMP007_TEMP_SHIFT … struct tmp007_data { … }; static const int tmp007_avgs[5][2] = …; static int tmp007_read_temperature(struct tmp007_data *data, u8 reg) { … } static int tmp007_powerdown(struct tmp007_data *data) { … } static int tmp007_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *channel, int *val, int *val2, long mask) { … } static int tmp007_write_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *channel, int val, int val2, long mask) { … } static irqreturn_t tmp007_interrupt_handler(int irq, void *private) { … } static int tmp007_write_event_config(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, enum iio_event_type type, enum iio_event_direction dir, int state) { … } static int tmp007_read_event_config(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, enum iio_event_type type, enum iio_event_direction dir) { … } static int tmp007_read_thresh(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, enum iio_event_type type, enum iio_event_direction dir, enum iio_event_info info, int *val, int *val2) { … } static int tmp007_write_thresh(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, enum iio_event_type type, enum iio_event_direction dir, enum iio_event_info info, int val, int val2) { … } static IIO_CONST_ATTR(sampling_frequency_available, "4 2 1 0.5 0.25"); static struct attribute *tmp007_attributes[] = …; static const struct attribute_group tmp007_attribute_group = …; static const struct iio_event_spec tmp007_obj_event[] = …; static const struct iio_event_spec tmp007_die_event[] = …; static const struct iio_chan_spec tmp007_channels[] = …; static const struct iio_info tmp007_info = …; static bool tmp007_identify(struct i2c_client *client) { … } static void tmp007_powerdown_action_cb(void *priv) { … } static int tmp007_probe(struct i2c_client *client) { … } static int tmp007_suspend(struct device *dev) { … } static int tmp007_resume(struct device *dev) { … } static DEFINE_SIMPLE_DEV_PM_OPS(tmp007_pm_ops, tmp007_suspend, tmp007_resume); static const struct of_device_id tmp007_of_match[] = …; MODULE_DEVICE_TABLE(of, tmp007_of_match); static const struct i2c_device_id tmp007_id[] = …; MODULE_DEVICE_TABLE(i2c, tmp007_id); static struct i2c_driver tmp007_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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