1/*
2 * isl6421.h - driver for lnb supply and control ic ISL6421
3 *
4 * Copyright (C) 2006 Andrew de Quincey
5 * Copyright (C) 2006 Oliver Endriss
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
11 *
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16 * GNU General Public License for more details.
17 *
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
22 * Or, point your browser to http://www.gnu.org/copyleft/gpl.html
23 *
24 *
25 * the project's page is at http://www.linuxtv.org
26 */
27
28#ifndef _ISL6421_H
29#define _ISL6421_H
30
31#include <linux/dvb/frontend.h>
32
33/* system register bits */
34#define ISL6421_OLF1	0x01
35#define ISL6421_EN1	0x02
36#define ISL6421_VSEL1	0x04
37#define ISL6421_LLC1	0x08
38#define ISL6421_ENT1	0x10
39#define ISL6421_ISEL1	0x20
40#define ISL6421_DCL	0x40
41
42#if IS_ENABLED(CONFIG_DVB_ISL6421)
43/* override_set and override_clear control which system register bits (above) to always set & clear */
44extern struct dvb_frontend *isl6421_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, u8 i2c_addr,
45			  u8 override_set, u8 override_clear, bool override_tone);
46#else
47static inline struct dvb_frontend *isl6421_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, u8 i2c_addr,
48						  u8 override_set, u8 override_clear, bool override_tone)
49{
50	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
51	return NULL;
52}
53#endif // CONFIG_DVB_ISL6421
54
55#endif
56