1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2 | /* |
3 | * Support for LGDT3306A - 8VSB/QAM-B |
4 | * |
5 | * Copyright (C) 2013,2014 Fred Richter <frichter@hauppauge.com> |
6 | * based on lgdt3305.[ch] by Michael Krufky |
7 | */ |
8 | |
9 | #ifndef _LGDT3306A_H_ |
10 | #define _LGDT3306A_H_ |
11 | |
12 | #include <linux/i2c.h> |
13 | #include <media/dvb_frontend.h> |
14 | |
15 | |
16 | enum lgdt3306a_mpeg_mode { |
17 | LGDT3306A_MPEG_PARALLEL = 0, |
18 | LGDT3306A_MPEG_SERIAL = 1, |
19 | }; |
20 | |
21 | enum lgdt3306a_tp_clock_edge { |
22 | LGDT3306A_TPCLK_RISING_EDGE = 0, |
23 | LGDT3306A_TPCLK_FALLING_EDGE = 1, |
24 | }; |
25 | |
26 | enum lgdt3306a_tp_valid_polarity { |
27 | LGDT3306A_TP_VALID_LOW = 0, |
28 | LGDT3306A_TP_VALID_HIGH = 1, |
29 | }; |
30 | |
31 | struct lgdt3306a_config { |
32 | u8 i2c_addr; |
33 | |
34 | /* user defined IF frequency in KHz */ |
35 | u16 qam_if_khz; |
36 | u16 vsb_if_khz; |
37 | |
38 | /* disable i2c repeater - 0:repeater enabled 1:repeater disabled */ |
39 | unsigned int deny_i2c_rptr:1; |
40 | |
41 | /* spectral inversion - 0:disabled 1:enabled */ |
42 | unsigned int spectral_inversion:1; |
43 | |
44 | enum lgdt3306a_mpeg_mode mpeg_mode; |
45 | enum lgdt3306a_tp_clock_edge tpclk_edge; |
46 | enum lgdt3306a_tp_valid_polarity tpvalid_polarity; |
47 | |
48 | /* demod clock freq in MHz; 24 or 25 supported */ |
49 | int xtalMHz; |
50 | |
51 | /* returned by driver if using i2c bus multiplexing */ |
52 | struct dvb_frontend **fe; |
53 | struct i2c_adapter **i2c_adapter; |
54 | }; |
55 | |
56 | #if IS_REACHABLE(CONFIG_DVB_LGDT3306A) |
57 | struct dvb_frontend *lgdt3306a_attach(const struct lgdt3306a_config *config, |
58 | struct i2c_adapter *i2c_adap); |
59 | #else |
60 | static inline |
61 | struct dvb_frontend *lgdt3306a_attach(const struct lgdt3306a_config *config, |
62 | struct i2c_adapter *i2c_adap) |
63 | { |
64 | printk(KERN_WARNING "%s: driver disabled by Kconfig\n" , __func__); |
65 | return NULL; |
66 | } |
67 | #endif /* CONFIG_DVB_LGDT3306A */ |
68 | |
69 | #endif /* _LGDT3306A_H_ */ |
70 | |