linux/drivers/iio/light/cros_ec_light_prox.c

// SPDX-License-Identifier: GPL-2.0
/*
 * cros_ec_light_prox - Driver for light and prox sensors behing CrosEC.
 *
 * Copyright (C) 2017 Google, Inc
 */

#include <linux/device.h>
#include <linux/iio/buffer.h>
#include <linux/iio/common/cros_ec_sensors_core.h>
#include <linux/iio/iio.h>
#include <linux/iio/kfifo_buf.h>
#include <linux/iio/trigger.h>
#include <linux/iio/triggered_buffer.h>
#include <linux/iio/trigger_consumer.h>
#include <linux/kernel.h>
#include <linux/mod_devicetable.h>
#include <linux/module.h>
#include <linux/platform_data/cros_ec_commands.h>
#include <linux/platform_data/cros_ec_proto.h>
#include <linux/platform_device.h>
#include <linux/slab.h>

/*
 * We only represent one entry for light or proximity. EC is merging different
 * light sensors to return the what the eye would see. For proximity, we
 * currently support only one light source.
 */
#define CROS_EC_LIGHT_PROX_MAX_CHANNELS …

/* State data for ec_sensors iio driver. */
struct cros_ec_light_prox_state { … };

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

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

static const struct iio_info cros_ec_light_prox_info = …;

static int cros_ec_light_prox_probe(struct platform_device *pdev)
{ … }

static const struct platform_device_id cros_ec_light_prox_ids[] = …;
MODULE_DEVICE_TABLE(platform, cros_ec_light_prox_ids);

static struct platform_driver cros_ec_light_prox_platform_driver = …;
module_platform_driver(…) …;

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