tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * lnbh25.c
3 *
4 * Driver for LNB supply and control IC LNBH25
5 *
6 * Copyright (C) 2014 NetUP Inc.
7 * Copyright (C) 2014 Sergey Kozlov <serjk@netup.ru>
8 * Copyright (C) 2014 Abylay Ospan <aospan@netup.ru>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 */
20
21#ifndef LNBH25_H
22#define LNBH25_H
23
24#include <linux/i2c.h>
25#include <linux/dvb/frontend.h>
26
27/* 22 kHz tone enabled. Tone output controlled by DSQIN pin */
28#define LNBH25_TEN 0x01
29/* Low power mode activated (used only with 22 kHz tone output disabled) */
30#define LNBH25_LPM 0x02
31/* DSQIN input pin is set to receive external 22 kHz TTL signal source */
32#define LNBH25_EXTM 0x04
33
34struct lnbh25_config {
35 u8 i2c_address;
36 u8 data2_config;
37};
38
39#if IS_REACHABLE(CONFIG_DVB_LNBH25)
40struct dvb_frontend *lnbh25_attach(
41 struct dvb_frontend *fe,
42 struct lnbh25_config *cfg,
43 struct i2c_adapter *i2c);
44#else
45static inline struct dvb_frontend *lnbh25_attach(
46 struct dvb_frontend *fe,
47 struct lnbh25_config *cfg,
48 struct i2c_adapter *i2c)
49{
50 printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
51 return NULL;
52}
53#endif
54
55#endif