1 /*
2  *    Support for Legend Silicon GB20600 (a.k.a DMB-TH) demodulator
3  *    LGS8913, LGS8GL5, LGS8G75
4  *    experimental support LGS8G42, LGS8G52
5  *
6  *    Copyright (C) 2007-2009 David T.L. Wong <davidtlwong@gmail.com>
7  *    Copyright (C) 2008 Sirius International (Hong Kong) Limited
8  *    Timothy Lee <timothy.lee@siriushk.com> (for initial work on LGS8GL5)
9  *
10  *    This program is free software; you can redistribute it and/or modify
11  *    it under the terms of the GNU General Public License as published by
12  *    the Free Software Foundation; either version 2 of the License, or
13  *    (at your option) any later version.
14  *
15  *    This program is distributed in the hope that it will be useful,
16  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
17  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18  *    GNU General Public License for more details.
19  *
20  */
21 
22 #ifndef __LGS8GXX_H__
23 #define __LGS8GXX_H__
24 
25 #include <linux/dvb/frontend.h>
26 #include <linux/i2c.h>
27 
28 #define LGS8GXX_PROD_LGS8913 0
29 #define LGS8GXX_PROD_LGS8GL5 1
30 #define LGS8GXX_PROD_LGS8G42 3
31 #define LGS8GXX_PROD_LGS8G52 4
32 #define LGS8GXX_PROD_LGS8G54 5
33 #define LGS8GXX_PROD_LGS8G75 6
34 
35 struct lgs8gxx_config {
36 
37 	/* product type */
38 	u8 prod;
39 
40 	/* the demodulator's i2c address */
41 	u8 demod_address;
42 
43 	/* parallel or serial transport stream */
44 	u8 serial_ts;
45 
46 	/* transport stream polarity*/
47 	u8 ts_clk_pol;
48 
49 	/* transport stream clock gated by ts_valid */
50 	u8 ts_clk_gated;
51 
52 	/* A/D Clock frequency */
53 	u32 if_clk_freq; /* in kHz */
54 
55 	/* IF frequency */
56 	u32 if_freq; /* in kHz */
57 
58 	/*Use External ADC*/
59 	u8 ext_adc;
60 
61 	/*External ADC output two's complement*/
62 	u8 adc_signed;
63 
64 	/*Sample IF data at falling edge of IF_CLK*/
65 	u8 if_neg_edge;
66 
67 	/*IF use Negative center frequency*/
68 	u8 if_neg_center;
69 
70 	/*8G75 internal ADC input range selection*/
71 	/*0: 0.8Vpp, 1: 1.0Vpp, 2: 1.6Vpp, 3: 2.0Vpp*/
72 	u8 adc_vpp;
73 
74 	/* slave address and configuration of the tuner */
75 	u8 tuner_address;
76 };
77 
78 #if IS_REACHABLE(CONFIG_DVB_LGS8GXX)
79 extern struct dvb_frontend *lgs8gxx_attach(const struct lgs8gxx_config *config,
80 					   struct i2c_adapter *i2c);
81 #else
82 static inline
lgs8gxx_attach(const struct lgs8gxx_config * config,struct i2c_adapter * i2c)83 struct dvb_frontend *lgs8gxx_attach(const struct lgs8gxx_config *config,
84 				    struct i2c_adapter *i2c) {
85 	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
86 	return NULL;
87 }
88 #endif /* CONFIG_DVB_LGS8GXX */
89 
90 #endif /* __LGS8GXX_H__ */
91