1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 *    Support for Legend Silicon GB20600 (a.k.a DMB-TH) demodulator
4 *    LGS8913, LGS8GL5, LGS8G75
5 *    experimental support LGS8G42, LGS8G52
6 *
7 *    Copyright (C) 2007-2009 David T.L. Wong <davidtlwong@gmail.com>
8 *    Copyright (C) 2008 Sirius International (Hong Kong) Limited
9 *    Timothy Lee <timothy.lee@siriushk.com> (for initial work on LGS8GL5)
10 */
11
12#ifndef __LGS8GXX_H__
13#define __LGS8GXX_H__
14
15#include <linux/dvb/frontend.h>
16#include <linux/i2c.h>
17
18#define LGS8GXX_PROD_LGS8913 0
19#define LGS8GXX_PROD_LGS8GL5 1
20#define LGS8GXX_PROD_LGS8G42 3
21#define LGS8GXX_PROD_LGS8G52 4
22#define LGS8GXX_PROD_LGS8G54 5
23#define LGS8GXX_PROD_LGS8G75 6
24
25struct lgs8gxx_config {
26
27	/* product type */
28	u8 prod;
29
30	/* the demodulator's i2c address */
31	u8 demod_address;
32
33	/* parallel or serial transport stream */
34	u8 serial_ts;
35
36	/* transport stream polarity*/
37	u8 ts_clk_pol;
38
39	/* transport stream clock gated by ts_valid */
40	u8 ts_clk_gated;
41
42	/* A/D Clock frequency */
43	u32 if_clk_freq; /* in kHz */
44
45	/* IF frequency */
46	u32 if_freq; /* in kHz */
47
48	/*Use External ADC*/
49	u8 ext_adc;
50
51	/*External ADC output two's complement*/
52	u8 adc_signed;
53
54	/*Sample IF data at falling edge of IF_CLK*/
55	u8 if_neg_edge;
56
57	/*IF use Negative center frequency*/
58	u8 if_neg_center;
59
60	/*8G75 internal ADC input range selection*/
61	/*0: 0.8Vpp, 1: 1.0Vpp, 2: 1.6Vpp, 3: 2.0Vpp*/
62	u8 adc_vpp;
63
64	/* slave address and configuration of the tuner */
65	u8 tuner_address;
66};
67
68#if IS_REACHABLE(CONFIG_DVB_LGS8GXX)
69extern struct dvb_frontend *lgs8gxx_attach(const struct lgs8gxx_config *config,
70					   struct i2c_adapter *i2c);
71#else
72static inline
73struct dvb_frontend *lgs8gxx_attach(const struct lgs8gxx_config *config,
74				    struct i2c_adapter *i2c) {
75	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
76	return NULL;
77}
78#endif /* CONFIG_DVB_LGS8GXX */
79
80#endif /* __LGS8GXX_H__ */
81