tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 *
20 */
21
22#ifndef _LGDT3305_H_
23#define _LGDT3305_H_
24
25#include <linux/i2c.h>
26#include "dvb_frontend.h"
27
28
29enum lgdt3305_mpeg_mode {
30 LGDT3305_MPEG_PARALLEL = 0,
31 LGDT3305_MPEG_SERIAL = 1,
32};
33
34enum lgdt3305_tp_clock_edge {
35 LGDT3305_TPCLK_RISING_EDGE = 0,
36 LGDT3305_TPCLK_FALLING_EDGE = 1,
37};
38
39enum lgdt3305_tp_clock_mode {
40 LGDT3305_TPCLK_GATED = 0,
41 LGDT3305_TPCLK_FIXED = 1,
42};
43
44enum lgdt3305_tp_valid_polarity {
45 LGDT3305_TP_VALID_LOW = 0,
46 LGDT3305_TP_VALID_HIGH = 1,
47};
48
49enum lgdt_demod_chip_type {
50 LGDT3305 = 0,
51 LGDT3304 = 1,
52};
53
54struct lgdt3305_config {
55 u8 i2c_addr;
56
57 /* user defined IF frequency in KHz */
58 u16 qam_if_khz;
59 u16 vsb_if_khz;
60
61 /* AGC Power reference - defaults are used if left unset */
62 u16 usref_8vsb; /* default: 0x32c4 */
63 u16 usref_qam64; /* default: 0x5400 */
64 u16 usref_qam256; /* default: 0x2a80 */
65
66 /* disable i2c repeater - 0:repeater enabled 1:repeater disabled */
67 unsigned int deny_i2c_rptr:1;
68
69 /* spectral inversion - 0:disabled 1:enabled */
70 unsigned int spectral_inversion:1;
71
72 /* use RF AGC loop - 0:disabled 1:enabled */
73 unsigned int rf_agc_loop:1;
74
75 enum lgdt3305_mpeg_mode mpeg_mode;
76 enum lgdt3305_tp_clock_edge tpclk_edge;
77 enum lgdt3305_tp_clock_mode tpclk_mode;
78 enum lgdt3305_tp_valid_polarity tpvalid_polarity;
79 enum lgdt_demod_chip_type demod_chip;
80};
81
82#if IS_REACHABLE(CONFIG_DVB_LGDT3305)
83extern
84struct dvb_frontend *lgdt3305_attach(const struct lgdt3305_config *config,
85 struct i2c_adapter *i2c_adap);
86#else
87static inline
88struct dvb_frontend *lgdt3305_attach(const struct lgdt3305_config *config,
89 struct i2c_adapter *i2c_adap)
90{
91 printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
92 return NULL;
93}
94#endif /* CONFIG_DVB_LGDT3305 */
95
96#endif /* _LGDT3305_H_ */