// SPDX-License-Identifier: GPL-2.0-only /* * Support for Lite-On LTR501 and similar ambient light and proximity sensors. * * Copyright 2014 Peter Meerwald <[email protected]> * * 7-bit I2C slave address 0x23 * * TODO: IR LED characteristics */ #include <linux/module.h> #include <linux/mod_devicetable.h> #include <linux/i2c.h> #include <linux/err.h> #include <linux/delay.h> #include <linux/regmap.h> #include <linux/acpi.h> #include <linux/regulator/consumer.h> #include <linux/iio/iio.h> #include <linux/iio/events.h> #include <linux/iio/sysfs.h> #include <linux/iio/trigger_consumer.h> #include <linux/iio/buffer.h> #include <linux/iio/triggered_buffer.h> #define LTR501_DRV_NAME … #define LTR501_ALS_CONTR … #define LTR501_PS_CONTR … #define LTR501_PS_MEAS_RATE … #define LTR501_ALS_MEAS_RATE … #define LTR501_PART_ID … #define LTR501_MANUFAC_ID … #define LTR501_ALS_DATA1 … #define LTR501_ALS_DATA1_UPPER … #define LTR501_ALS_DATA0 … #define LTR501_ALS_DATA0_UPPER … #define LTR501_ALS_PS_STATUS … #define LTR501_PS_DATA … #define LTR501_PS_DATA_UPPER … #define LTR501_INTR … #define LTR501_PS_THRESH_UP … #define LTR501_PS_THRESH_LOW … #define LTR501_ALS_THRESH_UP … #define LTR501_ALS_THRESH_LOW … #define LTR501_INTR_PRST … #define LTR501_MAX_REG … #define LTR501_ALS_CONTR_SW_RESET … #define LTR501_CONTR_PS_GAIN_MASK … #define LTR501_CONTR_PS_GAIN_SHIFT … #define LTR501_CONTR_ALS_GAIN_MASK … #define LTR501_CONTR_ACTIVE … #define LTR501_STATUS_ALS_INTR … #define LTR501_STATUS_ALS_RDY … #define LTR501_STATUS_PS_INTR … #define LTR501_STATUS_PS_RDY … #define LTR501_PS_DATA_MASK … #define LTR501_PS_THRESH_MASK … #define LTR501_ALS_THRESH_MASK … #define LTR501_ALS_DEF_PERIOD … #define LTR501_PS_DEF_PERIOD … #define LTR501_REGMAP_NAME … #define LTR501_LUX_CONV(vis_coeff, vis_data, ir_coeff, ir_data) … static const int int_time_mapping[] = …; static const struct reg_field reg_field_it = …; static const struct reg_field reg_field_als_intr = …; static const struct reg_field reg_field_ps_intr = …; static const struct reg_field reg_field_als_rate = …; static const struct reg_field reg_field_ps_rate = …; static const struct reg_field reg_field_als_prst = …; static const struct reg_field reg_field_ps_prst = …; struct ltr501_samp_table { … }; #define LTR501_RESERVED_GAIN … enum { … }; struct ltr501_gain { … }; static const struct ltr501_gain ltr501_als_gain_tbl[] = …; static const struct ltr501_gain ltr559_als_gain_tbl[] = …; static const struct ltr501_gain ltr501_ps_gain_tbl[] = …; static const struct ltr501_gain ltr559_ps_gain_tbl[] = …; struct ltr501_chip_info { … }; struct ltr501_data { … }; static const struct ltr501_samp_table ltr501_als_samp_table[] = …; static const struct ltr501_samp_table ltr501_ps_samp_table[] = …; static int ltr501_match_samp_freq(const struct ltr501_samp_table *tab, int len, int val, int val2) { … } static int ltr501_als_read_samp_freq(const struct ltr501_data *data, int *val, int *val2) { … } static int ltr501_ps_read_samp_freq(const struct ltr501_data *data, int *val, int *val2) { … } static int ltr501_als_write_samp_freq(struct ltr501_data *data, int val, int val2) { … } static int ltr501_ps_write_samp_freq(struct ltr501_data *data, int val, int val2) { … } static int ltr501_als_read_samp_period(const struct ltr501_data *data, int *val) { … } static int ltr501_ps_read_samp_period(const struct ltr501_data *data, int *val) { … } /* IR and visible spectrum coeff's are given in data sheet */ static unsigned long ltr501_calculate_lux(u16 vis_data, u16 ir_data) { … } static int ltr501_drdy(const struct ltr501_data *data, u8 drdy_mask) { … } static int ltr501_set_it_time(struct ltr501_data *data, int it) { … } /* read int time in micro seconds */ static int ltr501_read_it_time(const struct ltr501_data *data, int *val, int *val2) { … } static int ltr501_read_als(const struct ltr501_data *data, __le16 buf[2]) { … } static int ltr501_read_ps(const struct ltr501_data *data) { … } static int ltr501_read_intr_prst(const struct ltr501_data *data, enum iio_chan_type type, int *val2) { … } static int ltr501_write_intr_prst(struct ltr501_data *data, enum iio_chan_type type, int val, int val2) { … } static ssize_t ltr501_read_near_level(struct iio_dev *indio_dev, uintptr_t priv, const struct iio_chan_spec *chan, char *buf) { … } static const struct iio_chan_spec_ext_info ltr501_ext_info[] = …; static const struct iio_event_spec ltr501_als_event_spec[] = …; static const struct iio_event_spec ltr501_pxs_event_spec[] = …; #define LTR501_INTENSITY_CHANNEL(_idx, _addr, _mod, _shared, \ _evspec, _evsize) … #define LTR501_LIGHT_CHANNEL() … static const struct iio_chan_spec ltr501_channels[] = …; static const struct iio_chan_spec ltr301_channels[] = …; static int ltr501_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, long mask) { … } static int ltr501_get_gain_index(const struct ltr501_gain *gain, int size, int val, int val2) { … } static int ltr501_write_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int val, int val2, long mask) { … } static int ltr501_read_thresh(const 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 ltr501_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 int ltr501_read_event(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 ltr501_write_event(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 ltr501_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 ltr501_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 ssize_t ltr501_show_proximity_scale_avail(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t ltr501_show_intensity_scale_avail(struct device *dev, struct device_attribute *attr, char *buf) { … } static IIO_CONST_ATTR_INT_TIME_AVAIL("0.05 0.1 0.2 0.4"); static IIO_CONST_ATTR_SAMP_FREQ_AVAIL("20 10 5 2 1 0.5"); static IIO_DEVICE_ATTR(in_proximity_scale_available, S_IRUGO, ltr501_show_proximity_scale_avail, NULL, 0); static IIO_DEVICE_ATTR(in_intensity_scale_available, S_IRUGO, ltr501_show_intensity_scale_avail, NULL, 0); static struct attribute *ltr501_attributes[] = …; static struct attribute *ltr301_attributes[] = …; static const struct attribute_group ltr501_attribute_group = …; static const struct attribute_group ltr301_attribute_group = …; static const struct iio_info ltr501_info_no_irq = …; static const struct iio_info ltr501_info = …; static const struct iio_info ltr301_info_no_irq = …; static const struct iio_info ltr301_info = …; static const struct ltr501_chip_info ltr501_chip_info_tbl[] = …; static int ltr501_write_contr(struct ltr501_data *data, u8 als_val, u8 ps_val) { … } static irqreturn_t ltr501_trigger_handler(int irq, void *p) { … } static irqreturn_t ltr501_interrupt_handler(int irq, void *private) { … } static int ltr501_init(struct ltr501_data *data) { … } static bool ltr501_is_volatile_reg(struct device *dev, unsigned int reg) { … } static const struct regmap_config ltr501_regmap_config = …; static int ltr501_powerdown(struct ltr501_data *data) { … } static const char *ltr501_match_acpi_device(struct device *dev, int *chip_idx) { … } static int ltr501_probe(struct i2c_client *client) { … } static void ltr501_remove(struct i2c_client *client) { … } static int ltr501_suspend(struct device *dev) { … } static int ltr501_resume(struct device *dev) { … } static DEFINE_SIMPLE_DEV_PM_OPS(ltr501_pm_ops, ltr501_suspend, ltr501_resume); static const struct acpi_device_id ltr_acpi_match[] = …; MODULE_DEVICE_TABLE(acpi, ltr_acpi_match); static const struct i2c_device_id ltr501_id[] = …; MODULE_DEVICE_TABLE(i2c, ltr501_id); static const struct of_device_id ltr501_of_match[] = …; MODULE_DEVICE_TABLE(of, ltr501_of_match); static struct i2c_driver ltr501_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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