xref: /linux/drivers/media/dvb-frontends/cx24120.h (revision 75bf465f0bc33e9b776a46d6a1b9b990f5fb7c37)
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 <pb@linuxtv.org>
6  * Copyright (C) 2009 Sergey Tyurin <forum.free-x.de>
7  * Updated 2012 by Jannis Achstetter <jannis_achstetter@web.de>
8  * Copyright (C) 2015 Jemma Denson <jdenson@gmail.com>
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
cx24120_attach(const struct cx24120_config * config,struct i2c_adapter * i2c)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 */
49