Linux Kernel  3.7.1
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s921.h
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1 /*
2  * Sharp s921 driver
3  *
4  * Copyright (C) 2009 Mauro Carvalho Chehab <[email protected]>
5  * Copyright (C) 2009 Douglas Landgraf <[email protected]>
6  *
7  * This program is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU General Public License as
9  * published by the Free Software Foundation version 2.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * General Public License for more details.
15  */
16 
17 #ifndef S921_H
18 #define S921_H
19 
20 #include <linux/dvb/frontend.h>
21 
22 struct s921_config {
23  /* the demodulator's i2c address */
25 };
26 
27 #if defined(CONFIG_DVB_S921) || (defined(CONFIG_DVB_S921_MODULE) \
28  && defined(MODULE))
29 extern struct dvb_frontend *s921_attach(const struct s921_config *config,
30  struct i2c_adapter *i2c);
31 extern struct i2c_adapter *s921_get_tuner_i2c_adapter(struct dvb_frontend *);
32 #else
33 static inline struct dvb_frontend *s921_attach(
34  const struct s921_config *config, struct i2c_adapter *i2c)
35 {
36  printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
37  return NULL;
38 }
39 static struct i2c_adapter *
40  s921_get_tuner_i2c_adapter(struct dvb_frontend *fe)
41 {
42  printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
43  return NULL;
44 }
45 #endif
46 
47 #endif /* S921_H */