linux/drivers/iio/light/al3010.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * AL3010 - Dyna Image Ambient Light Sensor
 *
 * Copyright (c) 2014, Intel Corporation.
 * Copyright (c) 2016, Dyna-Image Corp.
 * Copyright (c) 2020, David Heidelberg, Michał Mirosław, Dmitry Osipenko
 *
 * IIO driver for AL3010 (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 AL3010_DRV_NAME …

#define AL3010_REG_SYSTEM …
#define AL3010_REG_DATA_LOW …
#define AL3010_REG_CONFIG …

#define AL3010_CONFIG_DISABLE …
#define AL3010_CONFIG_ENABLE …

#define AL3010_GAIN_MASK …

#define AL3010_SCALE_AVAILABLE …

enum al3xxxx_range { … };

static const int al3010_scales[][2] = …;

struct al3010_data { … };

static const struct iio_chan_spec al3010_channels[] = …;

static IIO_CONST_ATTR(in_illuminance_scale_available, AL3010_SCALE_AVAILABLE);

static struct attribute *al3010_attributes[] = …;

static const struct attribute_group al3010_attribute_group = …;

static int al3010_set_pwr(struct i2c_client *client, bool pwr)
{ … }

static void al3010_set_pwr_off(void *_data)
{ … }

static int al3010_init(struct al3010_data *data)
{ … }

static int al3010_read_raw(struct iio_dev *indio_dev,
			   struct iio_chan_spec const *chan, int *val,
			   int *val2, long mask)
{ … }

static int al3010_write_raw(struct iio_dev *indio_dev,
			    struct iio_chan_spec const *chan, int val,
			    int val2, long mask)
{ … }

static const struct iio_info al3010_info = …;

static int al3010_probe(struct i2c_client *client)
{ … }

static int al3010_suspend(struct device *dev)
{ … }

static int al3010_resume(struct device *dev)
{ … }

static DEFINE_SIMPLE_DEV_PM_OPS(al3010_pm_ops, al3010_suspend, al3010_resume);

static const struct i2c_device_id al3010_id[] = …;
MODULE_DEVICE_TABLE(i2c, al3010_id);

static const struct of_device_id al3010_of_match[] = …;
MODULE_DEVICE_TABLE(of, al3010_of_match);

static struct i2c_driver al3010_driver = …;
module_i2c_driver(…) …;

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