drivers/media/tuners/tda827x.h

   1   /*
   2      DVB Driver for Philips tda827x / tda827xa Silicon tuners
   3
   4      (c) 2005 Hartmut Hackmann
   5      (c) 2007 Michael Krufky
   6
   7      This program is free software; you can redistribute it and/or modify
   8      it under the terms of the GNU General Public License as published by
   9      the Free Software Foundation; either version 2 of the License, or
  10      (at your option) any later version.
  11
  12      This program is distributed in the hope that it will be useful,
  13      but WITHOUT ANY WARRANTY; without even the implied warranty of
  14      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15
  16      GNU General Public License for more details.
  17
  18      You should have received a copy of the GNU General Public License
  19      along with this program; if not, write to the Free Software
  20      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21
  22   */
  23
  24 #ifndef __DVB_TDA827X_H__
  25 #define __DVB_TDA827X_H__
  26
  27 #include <linux/i2c.h>
  28 #include <media/dvb_frontend.h>
  29 #include "tda8290.h"
  30
  31 struct tda827x_config
  32 {
  33         /* saa7134 - provided callbacks */
  34         int (*init) (struct dvb_frontend *fe);
  35         int (*sleep) (struct dvb_frontend *fe);
  36
  37         /* interface to tda829x driver */
  38         enum tda8290_lna config;
  39         int          switch_addr;
  40
  41         void (*agcf)(struct dvb_frontend *fe);
  42 };
  43
  44
  45 /**
  46  * Attach a tda827x tuner to the supplied frontend structure.
  47  *
  48  * @param fe Frontend to attach to.
  49  * @param addr i2c address of the tuner.
  50  * @param i2c i2c adapter to use.
  51  * @param cfg optional callback function pointers.
  52  * @return FE pointer on success, NULL on failure.
  53  */
  54 #if IS_REACHABLE(CONFIG_MEDIA_TUNER_TDA827X)
  55 extern struct dvb_frontend* tda827x_attach(struct dvb_frontend *fe, int addr,
  56                                            struct i2c_adapter *i2c,
  57                                            struct tda827x_config *cfg);
  58 #else
  59 static inline struct dvb_frontend* tda827x_attach(struct dvb_frontend *fe,
  60                                                   int addr,
  61                                                   struct i2c_adapter *i2c,
  62                                                   struct tda827x_config *cfg)
  63 {
  64         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  65         return NULL;
  66 }
  67 #endif // CONFIG_MEDIA_TUNER_TDA827X
  68
  69 #endif // __DVB_TDA827X_H__