linux/drivers/media/radio/si4713/radio-platform-si4713.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * drivers/media/radio/radio-si4713.c
 *
 * Platform Driver for Silicon Labs Si4713 FM Radio Transmitter:
 *
 * Copyright (c) 2008 Instituto Nokia de Tecnologia - INdT
 * Contact: Eduardo Valentin <[email protected]>
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <linux/videodev2.h>
#include <linux/slab.h>
#include <media/v4l2-device.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-fh.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-event.h>
#include "si4713.h"

/* module parameters */
static int radio_nr = …;	/* radio device minor (-1 ==> auto assign) */
module_param(radio_nr, int, 0);
MODULE_PARM_DESC(…) …;

MODULE_LICENSE(…) …;
MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_VERSION(…) …;
MODULE_ALIAS(…) …;

/* Driver state struct */
struct radio_si4713_device { … };

/* radio_si4713_fops - file operations interface */
static const struct v4l2_file_operations radio_si4713_fops = …;

/* Video4Linux Interface */

/* radio_si4713_querycap - query device capabilities */
static int radio_si4713_querycap(struct file *file, void *priv,
					struct v4l2_capability *capability)
{ … }

/*
 * v4l2 ioctl call backs.
 * we are just a wrapper for v4l2_sub_devs.
 */
static inline struct v4l2_device *get_v4l2_dev(struct file *file)
{ … }

static int radio_si4713_g_modulator(struct file *file, void *p,
				    struct v4l2_modulator *vm)
{ … }

static int radio_si4713_s_modulator(struct file *file, void *p,
				    const struct v4l2_modulator *vm)
{ … }

static int radio_si4713_g_frequency(struct file *file, void *p,
				    struct v4l2_frequency *vf)
{ … }

static int radio_si4713_s_frequency(struct file *file, void *p,
				    const struct v4l2_frequency *vf)
{ … }

static long radio_si4713_default(struct file *file, void *p,
				 bool valid_prio, unsigned int cmd, void *arg)
{ … }

static const struct v4l2_ioctl_ops radio_si4713_ioctl_ops = …;

/* radio_si4713_vdev_template - video device interface */
static const struct video_device radio_si4713_vdev_template = …;

/* Platform driver interface */
/* radio_si4713_pdriver_probe - probe for the device */
static int radio_si4713_pdriver_probe(struct platform_device *pdev)
{ … }

/* radio_si4713_pdriver_remove - remove the device */
static void radio_si4713_pdriver_remove(struct platform_device *pdev)
{ … }

static struct platform_driver radio_si4713_pdriver = …;

module_platform_driver(…) …;