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 * To obtain the license, point your browser to
19 * http://www.gnu.org/copyleft/gpl.html
20 *
21 *
22 * the project's page is at https://linuxtv.org
23 */
24
25 #ifndef _ISL6421_H
26 #define _ISL6421_H
27
28 #include <linux/dvb/frontend.h>
29
30 /* system register bits */
31 #define ISL6421_OLF1 0x01
32 #define ISL6421_EN1 0x02
33 #define ISL6421_VSEL1 0x04
34 #define ISL6421_LLC1 0x08
35 #define ISL6421_ENT1 0x10
36 #define ISL6421_ISEL1 0x20
37 #define ISL6421_DCL 0x40
38
39 #if IS_REACHABLE(CONFIG_DVB_ISL6421)
40 /* override_set and override_clear control which system register bits (above) to always set & clear */
41 extern struct dvb_frontend *isl6421_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, u8 i2c_addr,
42 u8 override_set, u8 override_clear, bool override_tone);
43 #else
isl6421_attach(struct dvb_frontend * fe,struct i2c_adapter * i2c,u8 i2c_addr,u8 override_set,u8 override_clear,bool override_tone)44 static inline 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 {
47 printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
48 return NULL;
49 }
50 #endif // CONFIG_DVB_ISL6421
51
52 #endif
53
