// SPDX-License-Identifier: GPL-2.0+ /* * max30100.c - Support for MAX30100 heart rate and pulse oximeter sensor * * Copyright (C) 2015, 2018 * Author: Matt Ranostay <[email protected]> * * TODO: enable pulse length controls via device tree properties */ #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/property.h> #include <linux/regmap.h> #include <linux/iio/iio.h> #include <linux/iio/buffer.h> #include <linux/iio/kfifo_buf.h> #define MAX30100_REGMAP_NAME … #define MAX30100_DRV_NAME … #define MAX30100_REG_INT_STATUS … #define MAX30100_REG_INT_STATUS_PWR_RDY … #define MAX30100_REG_INT_STATUS_SPO2_RDY … #define MAX30100_REG_INT_STATUS_HR_RDY … #define MAX30100_REG_INT_STATUS_FIFO_RDY … #define MAX30100_REG_INT_ENABLE … #define MAX30100_REG_INT_ENABLE_SPO2_EN … #define MAX30100_REG_INT_ENABLE_HR_EN … #define MAX30100_REG_INT_ENABLE_FIFO_EN … #define MAX30100_REG_INT_ENABLE_MASK … #define MAX30100_REG_INT_ENABLE_MASK_SHIFT … #define MAX30100_REG_FIFO_WR_PTR … #define MAX30100_REG_FIFO_OVR_CTR … #define MAX30100_REG_FIFO_RD_PTR … #define MAX30100_REG_FIFO_DATA … #define MAX30100_REG_FIFO_DATA_ENTRY_COUNT … #define MAX30100_REG_FIFO_DATA_ENTRY_LEN … #define MAX30100_REG_MODE_CONFIG … #define MAX30100_REG_MODE_CONFIG_MODE_SPO2_EN … #define MAX30100_REG_MODE_CONFIG_MODE_HR_EN … #define MAX30100_REG_MODE_CONFIG_MODE_MASK … #define MAX30100_REG_MODE_CONFIG_TEMP_EN … #define MAX30100_REG_MODE_CONFIG_PWR … #define MAX30100_REG_SPO2_CONFIG … #define MAX30100_REG_SPO2_CONFIG_100HZ … #define MAX30100_REG_SPO2_CONFIG_HI_RES_EN … #define MAX30100_REG_SPO2_CONFIG_1600US … #define MAX30100_REG_LED_CONFIG … #define MAX30100_REG_LED_CONFIG_LED_MASK … #define MAX30100_REG_LED_CONFIG_RED_LED_SHIFT … #define MAX30100_REG_LED_CONFIG_24MA … #define MAX30100_REG_LED_CONFIG_50MA … #define MAX30100_REG_TEMP_INTEGER … #define MAX30100_REG_TEMP_FRACTION … struct max30100_data { … }; static bool max30100_is_volatile_reg(struct device *dev, unsigned int reg) { … } static const struct regmap_config max30100_regmap_config = …; static const unsigned int max30100_led_current_mapping[] = …; static const unsigned long max30100_scan_masks[] = …; static const struct iio_chan_spec max30100_channels[] = …; static int max30100_set_powermode(struct max30100_data *data, bool state) { … } static int max30100_clear_fifo(struct max30100_data *data) { … } static int max30100_buffer_postenable(struct iio_dev *indio_dev) { … } static int max30100_buffer_predisable(struct iio_dev *indio_dev) { … } static const struct iio_buffer_setup_ops max30100_buffer_setup_ops = …; static inline int max30100_fifo_count(struct max30100_data *data) { … } static int max30100_read_measurement(struct max30100_data *data) { … } static irqreturn_t max30100_interrupt_handler(int irq, void *private) { … } static int max30100_get_current_idx(unsigned int val, int *reg) { … } static int max30100_led_init(struct max30100_data *data) { … } static int max30100_chip_init(struct max30100_data *data) { … } static int max30100_read_temp(struct max30100_data *data, int *val) { … } static int max30100_get_temp(struct max30100_data *data, int *val) { … } static int max30100_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, long mask) { … } static const struct iio_info max30100_info = …; static int max30100_probe(struct i2c_client *client) { … } static void max30100_remove(struct i2c_client *client) { … } static const struct i2c_device_id max30100_id[] = …; MODULE_DEVICE_TABLE(i2c, max30100_id); static const struct of_device_id max30100_dt_ids[] = …; MODULE_DEVICE_TABLE(of, max30100_dt_ids); static struct i2c_driver max30100_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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