linux/drivers/iio/light/al3320a.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * AL3320A - Dyna Image Ambient Light Sensor
 *
 * Copyright (c) 2014, Intel Corporation.
 *
 * IIO driver for AL3320A (7-bit I2C slave address 0x1C).
 *
 * TODO: interrupt support, thresholds
 * When the driver will get support for interrupt handling, then interrupt
 * will need to be disabled before turning sensor OFF in order to avoid
 * potential races with the interrupt handling.
 */

#include <linux/bitfield.h>
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/mod_devicetable.h>

#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>

#define AL3320A_DRV_NAME …

#define AL3320A_REG_CONFIG …
#define AL3320A_REG_STATUS …
#define AL3320A_REG_INT …
#define AL3320A_REG_WAIT …
#define AL3320A_REG_CONFIG_RANGE …
#define AL3320A_REG_PERSIST …
#define AL3320A_REG_MEAN_TIME …
#define AL3320A_REG_ADUMMY …
#define AL3320A_REG_DATA_LOW …

#define AL3320A_REG_LOW_THRESH_LOW …
#define AL3320A_REG_LOW_THRESH_HIGH …
#define AL3320A_REG_HIGH_THRESH_LOW …
#define AL3320A_REG_HIGH_THRESH_HIGH …

#define AL3320A_CONFIG_DISABLE …
#define AL3320A_CONFIG_ENABLE …

#define AL3320A_GAIN_MASK …

/* chip params default values */
#define AL3320A_DEFAULT_MEAN_TIME …
#define AL3320A_DEFAULT_WAIT_TIME …

#define AL3320A_SCALE_AVAILABLE …

enum al3320a_range { … };

static const int al3320a_scales[][2] = …;

struct al3320a_data { … };

static const struct iio_chan_spec al3320a_channels[] = …;

static IIO_CONST_ATTR(in_illuminance_scale_available, AL3320A_SCALE_AVAILABLE);

static struct attribute *al3320a_attributes[] = …;

static const struct attribute_group al3320a_attribute_group = …;

static int al3320a_set_pwr(struct i2c_client *client, bool pwr)
{ … }

static void al3320a_set_pwr_off(void *_data)
{ … }

static int al3320a_init(struct al3320a_data *data)
{ … }

static int al3320a_read_raw(struct iio_dev *indio_dev,
			    struct iio_chan_spec const *chan, int *val,
			    int *val2, long mask)
{ … }

static int al3320a_write_raw(struct iio_dev *indio_dev,
			     struct iio_chan_spec const *chan, int val,
			     int val2, long mask)
{ … }

static const struct iio_info al3320a_info = …;

static int al3320a_probe(struct i2c_client *client)
{ … }

static int al3320a_suspend(struct device *dev)
{ … }

static int al3320a_resume(struct device *dev)
{ … }

static DEFINE_SIMPLE_DEV_PM_OPS(al3320a_pm_ops, al3320a_suspend,
				al3320a_resume);

static const struct i2c_device_id al3320a_id[] = …;
MODULE_DEVICE_TABLE(i2c, al3320a_id);

static const struct of_device_id al3320a_of_match[] = …;
MODULE_DEVICE_TABLE(of, al3320a_of_match);

static const struct acpi_device_id al3320a_acpi_match[] = …;
MODULE_DEVICE_TABLE(acpi, al3320a_acpi_match);

static struct i2c_driver al3320a_driver = …;

module_i2c_driver(…) …;

MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;