LXR linux/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
  27struct 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)
  43extern struct dvb_frontend *cx24123_attach(const struct cx24123_config *config,
  44                                           struct i2c_adapter *i2c);
  45extern struct i2c_adapter *cx24123_get_tuner_i2c_adapter(struct dvb_frontend *);
  46#else
  47static 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}
  53static 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 */
  62