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/kconfig.h>
  25 #include <linux/dvb/frontend.h>
  26
  27 struct cx24123_config {
  28         /* the demodulator's i2c address */
  29         u8 demod_address;
  30
  31         /* Need to set device param for start_dma */
  32         int (*set_ts_params)(struct dvb_frontend *fe, int is_punctured);
  33
  34         /* 0 = LNB voltage normal, 1 = LNB voltage inverted */
  35         int lnb_polarity;
  36
  37         /* this device has another tuner */
  38         u8 dont_use_pll;
  39         void (*agc_callback) (struct dvb_frontend *);
  40 };
  41
  42 #if IS_ENABLED(CONFIG_DVB_CX24123)
  43 extern struct dvb_frontend *cx24123_attach(const struct cx24123_config *config,
  44                                            struct i2c_adapter *i2c);
  45 extern struct i2c_adapter *cx24123_get_tuner_i2c_adapter(struct dvb_frontend *);
  46 #else
  47 static inline struct dvb_frontend *cx24123_attach(
  48         const struct cx24123_config *config, struct i2c_adapter *i2c)
  49 {
  50         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  51         return NULL;
  52 }
  53 static struct i2c_adapter *
  54         cx24123_get_tuner_i2c_adapter(struct dvb_frontend *fe)
  55 {
  56         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  57         return NULL;
  58 }
  59 #endif
  60
  61 #endif /* CX24123_H */