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[linux.git] / drivers / media / dvb-frontends / cx24120.h
1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  * Conexant CX24120/CX24118 - DVB-S/S2 demod/tuner driver
4  *
5  * Copyright (C) 2008 Patrick Boettcher <[email protected]>
6  * Copyright (C) 2009 Sergey Tyurin <forum.free-x.de>
7  * Updated 2012 by Jannis Achstetter <[email protected]>
8  * Copyright (C) 2015 Jemma Denson <[email protected]>
9  */
10
11 #ifndef CX24120_H
12 #define CX24120_H
13
14 #include <linux/dvb/frontend.h>
15 #include <linux/firmware.h>
16
17 struct cx24120_initial_mpeg_config {
18         u8 x1;
19         u8 x2;
20         u8 x3;
21 };
22
23 struct cx24120_config {
24         u8 i2c_addr;
25         u32 xtal_khz;
26         struct cx24120_initial_mpeg_config initial_mpeg_config;
27
28         int (*request_firmware)(struct dvb_frontend *fe,
29                                 const struct firmware **fw, char *name);
30
31         /* max bytes I2C provider can write at once */
32         u16 i2c_wr_max;
33 };
34
35 #if IS_REACHABLE(CONFIG_DVB_CX24120)
36 struct dvb_frontend *cx24120_attach(const struct cx24120_config *config,
37                                     struct i2c_adapter *i2c);
38 #else
39 static inline
40 struct dvb_frontend *cx24120_attach(const struct cx24120_config *config,
41                                     struct i2c_adapter *i2c)
42 {
43         pr_warn("%s: driver disabled by Kconfig\n", __func__);
44         return NULL;
45 }
46 #endif
47
48 #endif /* CX24120_H */
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