linux/drivers/media/i2c/tea6420.c

// SPDX-License-Identifier: GPL-2.0-or-later
 /*
    tea6420 - i2c-driver for the tea6420 by SGS Thomson

    Copyright (C) 1998-2003 Michael Hunold <[email protected]>
    Copyright (C) 2008 Hans Verkuil <[email protected]>

    The tea6420 is a bus controlled audio-matrix with 5 stereo inputs,
    4 stereo outputs and gain control for each output.
    It is cascadable, i.e. it can be found at the addresses 0x98
    and 0x9a on the i2c-bus.

    For detailed information download the specifications directly
    from SGS Thomson at http://www.st.com

  */


#include <linux/module.h>
#include <linux/ioctl.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <media/v4l2-device.h>
#include "tea6420.h"

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

static int debug;
module_param(debug, int, 0644);

MODULE_PARM_DESC(…) …;


/* make a connection between the input 'i' and the output 'o'
   with gain 'g' (note: i = 6 means 'mute') */
static int tea6420_s_routing(struct v4l2_subdev *sd,
			     u32 i, u32 o, u32 config)
{ … }

/* ----------------------------------------------------------------------- */

static const struct v4l2_subdev_audio_ops tea6420_audio_ops = …;

static const struct v4l2_subdev_ops tea6420_ops = …;

static int tea6420_probe(struct i2c_client *client)
{ … }

static void tea6420_remove(struct i2c_client *client)
{ … }

static const struct i2c_device_id tea6420_id[] = …;
MODULE_DEVICE_TABLE(i2c, tea6420_id);

static struct i2c_driver tea6420_driver = …;

module_i2c_driver(…) …;