drivers/media/tuners/tda827x.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2   /*
   3      DVB Driver for Philips tda827x / tda827xa Silicon tuners
   4
   5      (c) 2005 Hartmut Hackmann
   6      (c) 2007 Michael Krufky
   7
   8
   9   */
  10
  11 #ifndef __DVB_TDA827X_H__
  12 #define __DVB_TDA827X_H__
  13
  14 #include <linux/i2c.h>
  15 #include <media/dvb_frontend.h>
  16 #include "tda8290.h"
  17
  18 struct tda827x_config
  19 {
  20         /* saa7134 - provided callbacks */
  21         int (*init) (struct dvb_frontend *fe);
  22         int (*sleep) (struct dvb_frontend *fe);
  23
  24         /* interface to tda829x driver */
  25         enum tda8290_lna config;
  26         int          switch_addr;
  27
  28         void (*agcf)(struct dvb_frontend *fe);
  29 };
  30
  31
  32 /**
  33  * Attach a tda827x tuner to the supplied frontend structure.
  34  *
  35  * @param fe Frontend to attach to.
  36  * @param addr i2c address of the tuner.
  37  * @param i2c i2c adapter to use.
  38  * @param cfg optional callback function pointers.
  39  * @return FE pointer on success, NULL on failure.
  40  */
  41 #if IS_REACHABLE(CONFIG_MEDIA_TUNER_TDA827X)
  42 extern struct dvb_frontend* tda827x_attach(struct dvb_frontend *fe, int addr,
  43                                            struct i2c_adapter *i2c,
  44                                            struct tda827x_config *cfg);
  45 #else
  46 static inline struct dvb_frontend* tda827x_attach(struct dvb_frontend *fe,
  47                                                   int addr,
  48                                                   struct i2c_adapter *i2c,
  49                                                   struct tda827x_config *cfg)
  50 {
  51         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  52         return NULL;
  53 }
  54 #endif // CONFIG_MEDIA_TUNER_TDA827X
  55
  56 #endif // __DVB_TDA827X_H__