drivers/media/dvb-frontends/cx24123.h

   1 /*
   2     Conexant cx24123/cx24109 - DVB QPSK Satellite demod/tuner driver
   3
   4     Copyright (C) 2005 Steven Toth <stoth@linuxtv.org>
   5
   6     This program is free software; you can redistribute it and/or modify
   7     it under the terms of the GNU General Public License as published by
   8     the Free Software Foundation; either version 2 of the License, or
   9     (at your option) any later version.
  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
  14     GNU General Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with this program; if not, write to the Free Software
  18     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19 */
  20
  21 #ifndef CX24123_H
  22 #define CX24123_H
  23
  24 #include <linux/dvb/frontend.h>
  25
  26 struct cx24123_config {
  27         /* the demodulator's i2c address */
  28         u8 demod_address;
  29
  30         /* Need to set device param for start_dma */
  31         int (*set_ts_params)(struct dvb_frontend *fe, int is_punctured);
  32
  33         /* 0 = LNB voltage normal, 1 = LNB voltage inverted */
  34         int lnb_polarity;
  35
  36         /* this device has another tuner */
  37         u8 dont_use_pll;
  38         void (*agc_callback) (struct dvb_frontend *);
  39 };
  40
  41 #if IS_REACHABLE(CONFIG_DVB_CX24123)
  42 extern struct dvb_frontend *cx24123_attach(const struct cx24123_config *config,
  43                                            struct i2c_adapter *i2c);
  44 extern struct i2c_adapter *cx24123_get_tuner_i2c_adapter(struct dvb_frontend *);
  45 #else
  46 static inline struct dvb_frontend *cx24123_attach(
  47         const struct cx24123_config *config, struct i2c_adapter *i2c)
  48 {
  49         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  50         return NULL;
  51 }
  52 static inline struct i2c_adapter *
  53         cx24123_get_tuner_i2c_adapter(struct dvb_frontend *fe)
  54 {
  55         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  56         return NULL;
  57 }
  58 #endif
  59
  60 #endif /* CX24123_H */