1/*
2 * Realtek RTL2832U SDR driver
3 *
4 * Copyright (C) 2013 Antti Palosaari <crope@iki.fi>
5 *
6 *    This program is free software; you can redistribute it and/or modify
7 *    it under the terms of the GNU General Public License as published by
8 *    the Free Software Foundation; either version 2 of the License, or
9 *    (at your option) any later version.
10 *
11 *    This program is distributed in the hope that it will be useful,
12 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
13 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14 *    GNU General Public License for more details.
15 *
16 *    You should have received a copy of the GNU General Public License along
17 *    with this program; if not, write to the Free Software Foundation, Inc.,
18 *    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * GNU Radio plugin "gr-kernel" for device usage will be on:
21 * http://git.linuxtv.org/anttip/gr-kernel.git
22 *
23 * TODO:
24 * Help is very highly welcome for these + all the others you could imagine:
25 * - move controls to V4L2 API
26 * - use libv4l2 for stream format conversions
27 * - gr-kernel: switch to v4l2_mmap (current read eats a lot of cpu)
28 * - SDRSharp support
29 */
30
31#ifndef RTL2832_SDR_H
32#define RTL2832_SDR_H
33
34#include <linux/kconfig.h>
35#include <media/v4l2-subdev.h>
36
37/* for config struct */
38#include "rtl2832.h"
39
40#if IS_ENABLED(CONFIG_DVB_RTL2832_SDR)
41extern struct dvb_frontend *rtl2832_sdr_attach(struct dvb_frontend *fe,
42	struct i2c_adapter *i2c, const struct rtl2832_config *cfg,
43	struct v4l2_subdev *sd);
44#else
45static inline struct dvb_frontend *rtl2832_sdr_attach(struct dvb_frontend *fe,
46	struct i2c_adapter *i2c, const struct rtl2832_config *cfg,
47	struct v4l2_subdev *sd)
48{
49	dev_warn(&i2c->dev, "%s: driver disabled by Kconfig\n", __func__);
50	return NULL;
51}
52#endif
53
54#endif /* RTL2832_SDR_H */
55