release/src-rt-6.x/linux/linux-2.6/drivers/media/dvb/frontends/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 "dvb_frontend.h"
  29
  30 struct tda827x_config
  31 {
  32         void (*lna_gain) (struct dvb_frontend *fe, int high);
  33         int (*init) (struct dvb_frontend *fe);
  34         int (*sleep) (struct dvb_frontend *fe);
  35 };
  36
  37
  38 /**
  39  * Attach a tda827x tuner to the supplied frontend structure.
  40  *
  41  * @param fe Frontend to attach to.
  42  * @param addr i2c address of the tuner.
  43  * @param i2c i2c adapter to use.
  44  * @param cfg optional callback function pointers.
  45  * @return FE pointer on success, NULL on failure.
  46  */
  47 #if defined(CONFIG_DVB_TDA827X) || (defined(CONFIG_DVB_TDA827X_MODULE) && defined(MODULE))
  48 extern struct dvb_frontend* tda827x_attach(struct dvb_frontend *fe, int addr,
  49                                            struct i2c_adapter *i2c,
  50                                            struct tda827x_config *cfg);
  51 #else
  52 static inline struct dvb_frontend* tda827x_attach(struct dvb_frontend *fe,
  53                                                   int addr,
  54                                                   struct i2c_adapter *i2c,
  55                                                   struct tda827x_config *cfg)
  56 {
  57         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __FUNCTION__);
  58         return NULL;
  59 }
  60 #endif // CONFIG_DVB_TDA827X
  61
  62 #endif // __DVB_TDA827X_H__