drivers/media/dvb/frontends/tda10021.h

   1 /*
   2     TDA10021  - Single Chip Cable Channel Receiver driver module
   3                used on the the Siemens DVB-C cards
   4
   5     Copyright (C) 1999 Convergence Integrated Media GmbH <ralph@convergence.de>
   6     Copyright (C) 2004 Markus Schulz <msc@antzsystem.de>
   7                    Support for TDA10021
   8
   9     This program is free software; you can redistribute it and/or modify
  10     it under the terms of the GNU General Public License as published by
  11     the Free Software Foundation; either version 2 of the License, or
  12     (at your option) any later version.
  13
  14     This program is distributed in the hope that it will be useful,
  15     but WITHOUT ANY WARRANTY; without even the implied warranty of
  16     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17     GNU General Public License for more details.
  18
  19     You should have received a copy of the GNU General Public License
  20     along with this program; if not, write to the Free Software
  21     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22 */
  23
  24 #ifndef TDA10021_H
  25 #define TDA10021_H
  26
  27 #include <linux/dvb/frontend.h>
  28
  29 struct tda10021_config
  30 {
  31         /* the demodulator's i2c address */
  32         u8 demod_address;
  33 };
  34
  35 #if defined(CONFIG_DVB_TDA10021) || (defined(CONFIG_DVB_TDA10021_MODULE) && defined(MODULE))
  36 extern struct dvb_frontend* tda10021_attach(const struct tda10021_config* config,
  37                                             struct i2c_adapter* i2c, u8 pwm);
  38 #else
  39 static inline struct dvb_frontend* tda10021_attach(const struct tda10021_config* config,
  40                                             struct i2c_adapter* i2c, u8 pwm)
  41 {
  42         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __FUNCTION__);
  43         return NULL;
  44 }
  45 #endif // CONFIG_DVB_TDA10021
  46
  47 static inline int tda10021_writereg(struct dvb_frontend *fe, u8 reg, u8 val) {
  48         int r = 0;
  49         u8 buf[] = {reg, val};
  50         if (fe->ops.write)
  51                 r = fe->ops.write(fe, buf, 2);
  52         return r;
  53 }
  54
  55 #endif // TDA10021_H