1 /*
2 * Support for LG Electronics LGDT3304 and LGDT3305 - VSB/QAM
3 *
4 * Copyright (C) 2008, 2009, 2010 Michael Krufky <mkrufky@linuxtv.org>
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
18 #ifndef _LGDT3305_H_
19 #define _LGDT3305_H_
20
21 #include <linux/i2c.h>
22 #include <media/dvb_frontend.h>
23
24
25 enum lgdt3305_mpeg_mode {
26 LGDT3305_MPEG_PARALLEL = 0,
27 LGDT3305_MPEG_SERIAL = 1,
28 };
29
30 enum lgdt3305_tp_clock_edge {
31 LGDT3305_TPCLK_RISING_EDGE = 0,
32 LGDT3305_TPCLK_FALLING_EDGE = 1,
33 };
34
35 enum lgdt3305_tp_clock_mode {
36 LGDT3305_TPCLK_GATED = 0,
37 LGDT3305_TPCLK_FIXED = 1,
38 };
39
40 enum lgdt3305_tp_valid_polarity {
41 LGDT3305_TP_VALID_LOW = 0,
42 LGDT3305_TP_VALID_HIGH = 1,
43 };
44
45 enum lgdt_demod_chip_type {
46 LGDT3305 = 0,
47 LGDT3304 = 1,
48 };
49
50 struct lgdt3305_config {
51 u8 i2c_addr;
52
53 /* user defined IF frequency in KHz */
54 u16 qam_if_khz;
55 u16 vsb_if_khz;
56
57 /* AGC Power reference - defaults are used if left unset */
58 u16 usref_8vsb; /* default: 0x32c4 */
59 u16 usref_qam64; /* default: 0x5400 */
60 u16 usref_qam256; /* default: 0x2a80 */
61
62 /* disable i2c repeater - 0:repeater enabled 1:repeater disabled */
63 unsigned int deny_i2c_rptr:1;
64
65 /* spectral inversion - 0:disabled 1:enabled */
66 unsigned int spectral_inversion:1;
67
68 /* use RF AGC loop - 0:disabled 1:enabled */
69 unsigned int rf_agc_loop:1;
70
71 enum lgdt3305_mpeg_mode mpeg_mode;
72 enum lgdt3305_tp_clock_edge tpclk_edge;
73 enum lgdt3305_tp_clock_mode tpclk_mode;
74 enum lgdt3305_tp_valid_polarity tpvalid_polarity;
75 enum lgdt_demod_chip_type demod_chip;
76 };
77
78 #if IS_REACHABLE(CONFIG_DVB_LGDT3305)
79 extern
80 struct dvb_frontend *lgdt3305_attach(const struct lgdt3305_config *config,
81 struct i2c_adapter *i2c_adap);
82 #else
83 static inline
lgdt3305_attach(const struct lgdt3305_config * config,struct i2c_adapter * i2c_adap)84 struct dvb_frontend *lgdt3305_attach(const struct lgdt3305_config *config,
85 struct i2c_adapter *i2c_adap)
86 {
87 printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
88 return NULL;
89 }
90 #endif /* CONFIG_DVB_LGDT3305 */
91
92 #endif /* _LGDT3305_H_ */
93