1 /*
2 * helene.h
3 *
4 * Sony HELENE DVB-S/S2/T/T2/C/C2/ISDB-T/S tuner driver (CXD2858ER)
5 *
6 * Copyright 2012 Sony Corporation
7 * Copyright (C) 2014 NetUP Inc.
8 * Copyright (C) 2014 Abylay Ospan <aospan@netup.ru>
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 #ifndef __DVB_HELENE_H__
22 #define __DVB_HELENE_H__
23
24 #include <linux/dvb/frontend.h>
25 #include <linux/i2c.h>
26
27 enum helene_xtal {
28 SONY_HELENE_XTAL_16000, /* 16 MHz */
29 SONY_HELENE_XTAL_20500, /* 20.5 MHz */
30 SONY_HELENE_XTAL_24000, /* 24 MHz */
31 SONY_HELENE_XTAL_41000 /* 41 MHz */
32 };
33
34 /**
35 * struct helene_config - the configuration of 'Helene' tuner driver
36 * @i2c_address: I2C address of the tuner
37 * @xtal_freq_mhz: Oscillator frequency, MHz
38 * @set_tuner_priv: Callback function private context
39 * @set_tuner_callback: Callback function that notifies the parent driver
40 * which tuner is active now
41 * @xtal: Cristal frequency as described by &enum helene_xtal
42 * @fe: Frontend for which connects this tuner
43 */
44 struct helene_config {
45 u8 i2c_address;
46 u8 xtal_freq_mhz;
47 void *set_tuner_priv;
48 int (*set_tuner_callback)(void *, int);
49 enum helene_xtal xtal;
50
51 struct dvb_frontend *fe;
52 };
53
54 #if IS_REACHABLE(CONFIG_DVB_HELENE)
55 /**
56 * Attach a helene tuner (terrestrial and cable standards)
57 *
58 * @fe: frontend to be attached
59 * @config: pointer to &struct helene_config with tuner configuration.
60 * @i2c: i2c adapter to use.
61 *
62 * return: FE pointer on success, NULL on failure.
63 */
64 extern struct dvb_frontend *helene_attach(struct dvb_frontend *fe,
65 const struct helene_config *config,
66 struct i2c_adapter *i2c);
67
68 /**
69 * Attach a helene tuner (satellite standards)
70 *
71 * @fe: frontend to be attached
72 * @config: pointer to &struct helene_config with tuner configuration.
73 * @i2c: i2c adapter to use.
74 *
75 * return: FE pointer on success, NULL on failure.
76 */
77 extern struct dvb_frontend *helene_attach_s(struct dvb_frontend *fe,
78 const struct helene_config *config,
79 struct i2c_adapter *i2c);
80 #else
helene_attach(struct dvb_frontend * fe,const struct helene_config * config,struct i2c_adapter * i2c)81 static inline struct dvb_frontend *helene_attach(struct dvb_frontend *fe,
82 const struct helene_config *config,
83 struct i2c_adapter *i2c)
84 {
85 pr_warn("%s: driver disabled by Kconfig\n", __func__);
86 return NULL;
87 }
helene_attach_s(struct dvb_frontend * fe,const struct helene_config * config,struct i2c_adapter * i2c)88 static inline struct dvb_frontend *helene_attach_s(struct dvb_frontend *fe,
89 const struct helene_config *config,
90 struct i2c_adapter *i2c)
91 {
92 pr_warn("%s: driver disabled by Kconfig\n", __func__);
93 return NULL;
94 }
95 #endif
96
97 #endif
98
