1/*
2 *  Driver for Xceive XC4000 "QAM/8VSB single chip tuner"
3 *
4 *  Copyright (c) 2007 Steven Toth <stoth@linuxtv.org>
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 *
15 *  GNU General Public License for more details.
16 *
17 *  You should have received a copy of the GNU General Public License
18 *  along with this program; if not, write to the Free Software
19 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 */
21
22#ifndef __XC4000_H__
23#define __XC4000_H__
24
25#include <linux/firmware.h>
26
27struct dvb_frontend;
28struct i2c_adapter;
29
30struct xc4000_config {
31	u8	i2c_address;
32	/* if non-zero, power management is enabled by default */
33	u8	default_pm;
34	/* value to be written to XREG_AMPLITUDE in DVB-T mode (0: no write) */
35	u8	dvb_amplitude;
36	/* if non-zero, register 0x0E is set to filter analog TV video output */
37	u8	set_smoothedcvbs;
38	/* IF for DVB-T */
39	u32	if_khz;
40};
41
42/* xc4000 callback command */
43#define XC4000_TUNER_RESET		0
44
45/* For each bridge framework, when it attaches either analog or digital,
46 * it has to store a reference back to its _core equivalent structure,
47 * so that it can service the hardware by steering gpio's etc.
48 * Each bridge implementation is different so cast devptr accordingly.
49 * The xc4000 driver cares not for this value, other than ensuring
50 * it's passed back to a bridge during tuner_callback().
51 */
52
53#if IS_ENABLED(CONFIG_MEDIA_TUNER_XC4000)
54extern struct dvb_frontend *xc4000_attach(struct dvb_frontend *fe,
55					  struct i2c_adapter *i2c,
56					  struct xc4000_config *cfg);
57#else
58static inline struct dvb_frontend *xc4000_attach(struct dvb_frontend *fe,
59						 struct i2c_adapter *i2c,
60						 struct xc4000_config *cfg)
61{
62	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
63	return NULL;
64}
65#endif
66
67#endif
68