drivers/media/dvb-frontends/cx24123.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3     Conexant cx24123/cx24109 - DVB QPSK Satellite demod/tuner driver
   4
   5     Copyright (C) 2005 Steven Toth <stoth@linuxtv.org>
   6
   7 */
   8
   9 #ifndef CX24123_H
  10 #define CX24123_H
  11
  12 #include <linux/dvb/frontend.h>
  13
  14 struct cx24123_config {
  15         /* the demodulator's i2c address */
  16         u8 demod_address;
  17
  18         /* Need to set device param for start_dma */
  19         int (*set_ts_params)(struct dvb_frontend *fe, int is_punctured);
  20
  21         /* 0 = LNB voltage normal, 1 = LNB voltage inverted */
  22         int lnb_polarity;
  23
  24         /* this device has another tuner */
  25         u8 dont_use_pll;
  26         void (*agc_callback) (struct dvb_frontend *);
  27 };
  28
  29 #if IS_REACHABLE(CONFIG_DVB_CX24123)
  30 extern struct dvb_frontend *cx24123_attach(const struct cx24123_config *config,
  31                                            struct i2c_adapter *i2c);
  32 extern struct i2c_adapter *cx24123_get_tuner_i2c_adapter(struct dvb_frontend *);
  33 #else
  34 static inline struct dvb_frontend *cx24123_attach(
  35         const struct cx24123_config *config, struct i2c_adapter *i2c)
  36 {
  37         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  38         return NULL;
  39 }
  40 static inline struct i2c_adapter *
  41         cx24123_get_tuner_i2c_adapter(struct dvb_frontend *fe)
  42 {
  43         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  44         return NULL;
  45 }
  46 #endif
  47
  48 #endif /* CX24123_H */