LXR linux/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
  18struct 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)
  42extern struct dvb_frontend* tda827x_attach(struct dvb_frontend *fe, int addr,
  43                                           struct i2c_adapter *i2c,
  44                                           struct tda827x_config *cfg);
  45#else
  46static 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__
  57