linux/drivers/iio/light/lv0104cs.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * lv0104cs.c: LV0104CS Ambient Light Sensor Driver
 *
 * Copyright (C) 2018
 * Author: Jeff LaBundy <[email protected]>
 *
 * 7-bit I2C slave address: 0x13
 *
 * Link to data sheet: https://www.onsemi.com/pub/Collateral/LV0104CS-D.PDF
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/err.h>
#include <linux/mutex.h>
#include <linux/delay.h>
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>

#define LV0104CS_REGVAL_MEASURE …
#define LV0104CS_REGVAL_SLEEP …

#define LV0104CS_SCALE_0_25X …
#define LV0104CS_SCALE_1X …
#define LV0104CS_SCALE_2X …
#define LV0104CS_SCALE_8X …
#define LV0104CS_SCALE_SHIFT …

#define LV0104CS_INTEG_12_5MS …
#define LV0104CS_INTEG_100MS …
#define LV0104CS_INTEG_200MS …
#define LV0104CS_INTEG_SHIFT …

#define LV0104CS_CALIBSCALE_UNITY …

struct lv0104cs_private { … };

struct lv0104cs_mapping { … };

static const struct lv0104cs_mapping lv0104cs_calibscales[] = …;

static const struct lv0104cs_mapping lv0104cs_scales[] = …;

static const struct lv0104cs_mapping lv0104cs_int_times[] = …;

static int lv0104cs_write_reg(struct i2c_client *client, u8 regval)
{ … }

static int lv0104cs_read_adc(struct i2c_client *client, u16 *adc_output)
{ … }

static int lv0104cs_get_lux(struct lv0104cs_private *lv0104cs,
				int *val, int *val2)
{ … }

static int lv0104cs_read_raw(struct iio_dev *indio_dev,
				struct iio_chan_spec const *chan,
				int *val, int *val2, long mask)
{ … }

static int lv0104cs_set_calibscale(struct lv0104cs_private *lv0104cs,
				int val, int val2)
{ … }

static int lv0104cs_set_scale(struct lv0104cs_private *lv0104cs,
				int val, int val2)
{ … }

static int lv0104cs_set_int_time(struct lv0104cs_private *lv0104cs,
				int val, int val2)
{ … }

static int lv0104cs_write_raw(struct iio_dev *indio_dev,
				struct iio_chan_spec const *chan,
				int val, int val2, long mask)
{ … }

static ssize_t lv0104cs_show_calibscale_avail(struct device *dev,
				struct device_attribute *attr, char *buf)
{ … }

static ssize_t lv0104cs_show_scale_avail(struct device *dev,
				struct device_attribute *attr, char *buf)
{ … }

static ssize_t lv0104cs_show_int_time_avail(struct device *dev,
				struct device_attribute *attr, char *buf)
{ … }

static IIO_DEVICE_ATTR(calibscale_available, 0444,
				lv0104cs_show_calibscale_avail, NULL, 0);
static IIO_DEVICE_ATTR(scale_available, 0444,
				lv0104cs_show_scale_avail, NULL, 0);
static IIO_DEV_ATTR_INT_TIME_AVAIL(lv0104cs_show_int_time_avail);

static struct attribute *lv0104cs_attributes[] = …;

static const struct attribute_group lv0104cs_attribute_group = …;

static const struct iio_info lv0104cs_info = …;

static const struct iio_chan_spec lv0104cs_channels[] = …;

static int lv0104cs_probe(struct i2c_client *client)
{ … }

static const struct i2c_device_id lv0104cs_id[] = …;
MODULE_DEVICE_TABLE(i2c, lv0104cs_id);

static struct i2c_driver lv0104cs_i2c_driver = …;
module_i2c_driver(…) …;

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