// SPDX-License-Identifier: GPL-2.0-or-later /* * max30102.c - Support for MAX30102 heart rate and pulse oximeter sensor * * Copyright (C) 2017 Matt Ranostay <[email protected]> * * Support for MAX30105 optical particle sensor * Copyright (C) 2017 Peter Meerwald-Stadler <[email protected]> * * 7-bit I2C chip address: 0x57 * TODO: proximity power saving feature */ #include <linux/module.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/delay.h> #include <linux/err.h> #include <linux/irq.h> #include <linux/i2c.h> #include <linux/mutex.h> #include <linux/mod_devicetable.h> #include <linux/regmap.h> #include <linux/iio/iio.h> #include <linux/iio/buffer.h> #include <linux/iio/kfifo_buf.h> #define MAX30102_REGMAP_NAME … #define MAX30102_DRV_NAME … #define MAX30102_PART_NUMBER … enum max30102_chip_id { … }; enum max3012_led_idx { … }; #define MAX30102_REG_INT_STATUS … #define MAX30102_REG_INT_STATUS_PWR_RDY … #define MAX30102_REG_INT_STATUS_PROX_INT … #define MAX30102_REG_INT_STATUS_ALC_OVF … #define MAX30102_REG_INT_STATUS_PPG_RDY … #define MAX30102_REG_INT_STATUS_FIFO_RDY … #define MAX30102_REG_INT_ENABLE … #define MAX30102_REG_INT_ENABLE_PROX_INT_EN … #define MAX30102_REG_INT_ENABLE_ALC_OVF_EN … #define MAX30102_REG_INT_ENABLE_PPG_EN … #define MAX30102_REG_INT_ENABLE_FIFO_EN … #define MAX30102_REG_INT_ENABLE_MASK … #define MAX30102_REG_INT_ENABLE_MASK_SHIFT … #define MAX30102_REG_FIFO_WR_PTR … #define MAX30102_REG_FIFO_OVR_CTR … #define MAX30102_REG_FIFO_RD_PTR … #define MAX30102_REG_FIFO_DATA … #define MAX30102_REG_FIFO_DATA_BYTES … #define MAX30102_REG_FIFO_CONFIG … #define MAX30102_REG_FIFO_CONFIG_AVG_4SAMPLES … #define MAX30102_REG_FIFO_CONFIG_AVG_SHIFT … #define MAX30102_REG_FIFO_CONFIG_AFULL … #define MAX30102_REG_MODE_CONFIG … #define MAX30102_REG_MODE_CONFIG_MODE_NONE … #define MAX30102_REG_MODE_CONFIG_MODE_HR … #define MAX30102_REG_MODE_CONFIG_MODE_HR_SPO2 … #define MAX30102_REG_MODE_CONFIG_MODE_MULTI … #define MAX30102_REG_MODE_CONFIG_MODE_MASK … #define MAX30102_REG_MODE_CONFIG_PWR … #define MAX30102_REG_MODE_CONTROL_SLOT21 … #define MAX30102_REG_MODE_CONTROL_SLOT43 … #define MAX30102_REG_MODE_CONTROL_SLOT_MASK … #define MAX30102_REG_MODE_CONTROL_SLOT_SHIFT … #define MAX30102_REG_SPO2_CONFIG … #define MAX30102_REG_SPO2_CONFIG_PULSE_411_US … #define MAX30102_REG_SPO2_CONFIG_SR_400HZ … #define MAX30102_REG_SPO2_CONFIG_SR_MASK … #define MAX30102_REG_SPO2_CONFIG_SR_MASK_SHIFT … #define MAX30102_REG_SPO2_CONFIG_ADC_4096_STEPS … #define MAX30102_REG_SPO2_CONFIG_ADC_MASK_SHIFT … #define MAX30102_REG_RED_LED_CONFIG … #define MAX30102_REG_IR_LED_CONFIG … #define MAX30105_REG_GREEN_LED_CONFIG … #define MAX30102_REG_TEMP_CONFIG … #define MAX30102_REG_TEMP_CONFIG_TEMP_EN … #define MAX30102_REG_TEMP_INTEGER … #define MAX30102_REG_TEMP_FRACTION … #define MAX30102_REG_REV_ID … #define MAX30102_REG_PART_ID … struct max30102_data { … }; static const struct regmap_config max30102_regmap_config = …; static const unsigned long max30102_scan_masks[] = …; static const unsigned long max30105_scan_masks[] = …; #define MAX30102_INTENSITY_CHANNEL(_si, _mod) … static const struct iio_chan_spec max30102_channels[] = …; static const struct iio_chan_spec max30105_channels[] = …; static int max30102_set_power(struct max30102_data *data, bool en) { … } static int max30102_set_powermode(struct max30102_data *data, u8 mode, bool en) { … } #define MAX30102_MODE_CONTROL_LED_SLOTS(slot2, slot1) … static int max30102_buffer_postenable(struct iio_dev *indio_dev) { … } static int max30102_buffer_predisable(struct iio_dev *indio_dev) { … } static const struct iio_buffer_setup_ops max30102_buffer_setup_ops = …; static inline int max30102_fifo_count(struct max30102_data *data) { … } #define MAX30102_COPY_DATA(i) … static int max30102_read_measurement(struct max30102_data *data, unsigned int measurements) { … } static irqreturn_t max30102_interrupt_handler(int irq, void *private) { … } static int max30102_get_current_idx(unsigned int val, int *reg) { … } static int max30102_led_init(struct max30102_data *data) { … } static int max30102_chip_init(struct max30102_data *data) { … } static int max30102_read_temp(struct max30102_data *data, int *val) { … } static int max30102_get_temp(struct max30102_data *data, int *val, bool en) { … } static int max30102_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, long mask) { … } static const struct iio_info max30102_info = …; static int max30102_probe(struct i2c_client *client) { … } static void max30102_remove(struct i2c_client *client) { … } static const struct i2c_device_id max30102_id[] = …; MODULE_DEVICE_TABLE(i2c, max30102_id); static const struct of_device_id max30102_dt_ids[] = …; MODULE_DEVICE_TABLE(of, max30102_dt_ids); static struct i2c_driver max30102_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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