drivers/media/dvb-frontends/mb86a20s.h

   1 /*
   2  *   Fujitsu mb86a20s driver
   3  *
   4  *   Copyright (C) 2010 Mauro Carvalho Chehab
   5  *
   6  *   This program is free software; you can redistribute it and/or
   7  *   modify it under the terms of the GNU General Public License as
   8  *   published by the Free Software Foundation version 2.
   9  *
  10  *   This program is distributed in the hope that it will be useful,
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  *   General Public License for more details.
  14  */
  15
  16 #ifndef MB86A20S_H
  17 #define MB86A20S_H
  18
  19 #include <linux/kconfig.h>
  20 #include <linux/dvb/frontend.h>
  21
  22 /**
  23  * struct mb86a20s_config - Define the per-device attributes of the frontend
  24  *
  25  * @fclk:               Clock frequency. If zero, assumes the default
  26  *                      (32.57142 Mhz)
  27  * @demod_address:      the demodulator's i2c address
  28  * @is_serial:          if true, TS is serial. Otherwise, TS is parallel
  29  */
  30
  31 struct mb86a20s_config {
  32         u32     fclk;
  33         u8      demod_address;
  34         bool    is_serial;
  35 };
  36
  37 #if IS_REACHABLE(CONFIG_DVB_MB86A20S)
  38 extern struct dvb_frontend *mb86a20s_attach(const struct mb86a20s_config *config,
  39                                            struct i2c_adapter *i2c);
  40 extern struct i2c_adapter *mb86a20s_get_tuner_i2c_adapter(struct dvb_frontend *);
  41 #else
  42 static inline struct dvb_frontend *mb86a20s_attach(
  43         const struct mb86a20s_config *config, struct i2c_adapter *i2c)
  44 {
  45         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  46         return NULL;
  47 }
  48 static struct i2c_adapter *
  49         mb86a20s_get_tuner_i2c_adapter(struct dvb_frontend *fe)
  50 {
  51         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  52         return NULL;
  53 }
  54 #endif
  55
  56 #endif /* MB86A20S */