1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-or-later */
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Support for LGDT3306A - 8VSB/QAM-B
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright (C) 2013,2014 Fred Richter <frichter@hauppauge.com>
6*4882a593Smuzhiyun * based on lgdt3305.[ch] by Michael Krufky
7*4882a593Smuzhiyun */
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun #ifndef _LGDT3306A_H_
10*4882a593Smuzhiyun #define _LGDT3306A_H_
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun #include <linux/i2c.h>
13*4882a593Smuzhiyun #include <media/dvb_frontend.h>
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun enum lgdt3306a_mpeg_mode {
17*4882a593Smuzhiyun LGDT3306A_MPEG_PARALLEL = 0,
18*4882a593Smuzhiyun LGDT3306A_MPEG_SERIAL = 1,
19*4882a593Smuzhiyun };
20*4882a593Smuzhiyun
21*4882a593Smuzhiyun enum lgdt3306a_tp_clock_edge {
22*4882a593Smuzhiyun LGDT3306A_TPCLK_RISING_EDGE = 0,
23*4882a593Smuzhiyun LGDT3306A_TPCLK_FALLING_EDGE = 1,
24*4882a593Smuzhiyun };
25*4882a593Smuzhiyun
26*4882a593Smuzhiyun enum lgdt3306a_tp_valid_polarity {
27*4882a593Smuzhiyun LGDT3306A_TP_VALID_LOW = 0,
28*4882a593Smuzhiyun LGDT3306A_TP_VALID_HIGH = 1,
29*4882a593Smuzhiyun };
30*4882a593Smuzhiyun
31*4882a593Smuzhiyun struct lgdt3306a_config {
32*4882a593Smuzhiyun u8 i2c_addr;
33*4882a593Smuzhiyun
34*4882a593Smuzhiyun /* user defined IF frequency in KHz */
35*4882a593Smuzhiyun u16 qam_if_khz;
36*4882a593Smuzhiyun u16 vsb_if_khz;
37*4882a593Smuzhiyun
38*4882a593Smuzhiyun /* disable i2c repeater - 0:repeater enabled 1:repeater disabled */
39*4882a593Smuzhiyun unsigned int deny_i2c_rptr:1;
40*4882a593Smuzhiyun
41*4882a593Smuzhiyun /* spectral inversion - 0:disabled 1:enabled */
42*4882a593Smuzhiyun unsigned int spectral_inversion:1;
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun enum lgdt3306a_mpeg_mode mpeg_mode;
45*4882a593Smuzhiyun enum lgdt3306a_tp_clock_edge tpclk_edge;
46*4882a593Smuzhiyun enum lgdt3306a_tp_valid_polarity tpvalid_polarity;
47*4882a593Smuzhiyun
48*4882a593Smuzhiyun /* demod clock freq in MHz; 24 or 25 supported */
49*4882a593Smuzhiyun int xtalMHz;
50*4882a593Smuzhiyun
51*4882a593Smuzhiyun /* returned by driver if using i2c bus multiplexing */
52*4882a593Smuzhiyun struct dvb_frontend **fe;
53*4882a593Smuzhiyun struct i2c_adapter **i2c_adapter;
54*4882a593Smuzhiyun };
55*4882a593Smuzhiyun
56*4882a593Smuzhiyun #if IS_REACHABLE(CONFIG_DVB_LGDT3306A)
57*4882a593Smuzhiyun struct dvb_frontend *lgdt3306a_attach(const struct lgdt3306a_config *config,
58*4882a593Smuzhiyun struct i2c_adapter *i2c_adap);
59*4882a593Smuzhiyun #else
60*4882a593Smuzhiyun static inline
lgdt3306a_attach(const struct lgdt3306a_config * config,struct i2c_adapter * i2c_adap)61*4882a593Smuzhiyun struct dvb_frontend *lgdt3306a_attach(const struct lgdt3306a_config *config,
62*4882a593Smuzhiyun struct i2c_adapter *i2c_adap)
63*4882a593Smuzhiyun {
64*4882a593Smuzhiyun printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
65*4882a593Smuzhiyun return NULL;
66*4882a593Smuzhiyun }
67*4882a593Smuzhiyun #endif /* CONFIG_DVB_LGDT3306A */
68*4882a593Smuzhiyun
69*4882a593Smuzhiyun #endif /* _LGDT3306A_H_ */
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