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Linux kernel mirror (for testing)
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linux
1/*
2 * Montage M88DS3103 demodulator 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
17#ifndef M88DS3103_H
18#define M88DS3103_H
19
20#include <linux/dvb/frontend.h>
21
22struct m88ds3103_config {
23 /*
24 * I2C address
25 * Default: none, must set
26 * 0x68, ...
27 */
28 u8 i2c_addr;
29
30 /*
31 * clock
32 * Default: none, must set
33 * 27000000
34 */
35 u32 clock;
36
37 /*
38 * max bytes I2C provider is asked to write at once
39 * Default: none, must set
40 * 33, 65, ...
41 */
42 u16 i2c_wr_max;
43
44 /*
45 * TS output mode
46 * Default: M88DS3103_TS_SERIAL
47 */
48#define M88DS3103_TS_SERIAL 0 /* TS output pin D0, normal */
49#define M88DS3103_TS_SERIAL_D7 1 /* TS output pin D7 */
50#define M88DS3103_TS_PARALLEL 2 /* 24 MHz, normal */
51#define M88DS3103_TS_PARALLEL_12 3 /* 12 MHz */
52#define M88DS3103_TS_PARALLEL_16 4 /* 16 MHz */
53#define M88DS3103_TS_PARALLEL_19_2 5 /* 19.2 MHz */
54#define M88DS3103_TS_CI 6 /* 6 MHz */
55 u8 ts_mode;
56
57 /*
58 * spectrum inversion
59 * Default: 0
60 */
61 u8 spec_inv:1;
62
63 /*
64 * AGC polarity
65 * Default: 0
66 */
67 u8 agc_inv:1;
68
69 /*
70 * clock output
71 * Default: M88DS3103_CLOCK_OUT_DISABLED
72 */
73#define M88DS3103_CLOCK_OUT_DISABLED 0
74#define M88DS3103_CLOCK_OUT_ENABLED 1
75#define M88DS3103_CLOCK_OUT_ENABLED_DIV2 2
76 u8 clock_out;
77
78 /*
79 * DiSEqC envelope mode
80 * Default: 0
81 */
82 u8 envelope_mode:1;
83
84 /*
85 * AGC configuration
86 * Default: none, must set
87 */
88 u8 agc;
89};
90
91/*
92 * Driver implements own I2C-adapter for tuner I2C access. That's since chip
93 * has I2C-gate control which closes gate automatically after I2C transfer.
94 * Using own I2C adapter we can workaround that.
95 */
96
97#if defined(CONFIG_DVB_M88DS3103) || \
98 (defined(CONFIG_DVB_M88DS3103_MODULE) && defined(MODULE))
99extern struct dvb_frontend *m88ds3103_attach(
100 const struct m88ds3103_config *config,
101 struct i2c_adapter *i2c,
102 struct i2c_adapter **tuner_i2c);
103#else
104static inline struct dvb_frontend *m88ds3103_attach(
105 const struct m88ds3103_config *config,
106 struct i2c_adapter *i2c,
107 struct i2c_adapter **tuner_i2c)
108{
109 pr_warn("%s: driver disabled by Kconfig\n", __func__);
110 return NULL;
111}
112#endif
113
114#endif