drivers/media/tuners/xc5000.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  *  Driver for Xceive XC5000 "QAM/8VSB single chip tuner"
   4  *
   5  *  Copyright (c) 2007 Steven Toth <stoth@linuxtv.org>
   6  */
   7
   8 #ifndef __XC5000_H__
   9 #define __XC5000_H__
  10
  11 #include <linux/firmware.h>
  12
  13 struct dvb_frontend;
  14 struct i2c_adapter;
  15
  16 #define XC5000A 1
  17 #define XC5000C 2
  18
  19 struct xc5000_config {
  20         u8   i2c_address;
  21         u32  if_khz;
  22         u8   radio_input;
  23         u16  xtal_khz;
  24         u16  output_amp;
  25
  26         int chip_id;
  27 };
  28
  29 /* xc5000 callback command */
  30 #define XC5000_TUNER_RESET              0
  31
  32 /* Possible Radio inputs */
  33 #define XC5000_RADIO_NOT_CONFIGURED             0
  34 #define XC5000_RADIO_FM1                        1
  35 #define XC5000_RADIO_FM2                        2
  36 #define XC5000_RADIO_FM1_MONO                   3
  37
  38 /* For each bridge framework, when it attaches either analog or digital,
  39  * it has to store a reference back to its _core equivalent structure,
  40  * so that it can service the hardware by steering gpio's etc.
  41  * Each bridge implementation is different so cast devptr accordingly.
  42  * The xc5000 driver cares not for this value, other than ensuring
  43  * it's passed back to a bridge during tuner_callback().
  44  */
  45
  46 #if IS_REACHABLE(CONFIG_MEDIA_TUNER_XC5000)
  47 extern struct dvb_frontend *xc5000_attach(struct dvb_frontend *fe,
  48                                           struct i2c_adapter *i2c,
  49                                           const struct xc5000_config *cfg);
  50 #else
  51 static inline struct dvb_frontend *xc5000_attach(struct dvb_frontend *fe,
  52                                                  struct i2c_adapter *i2c,
  53                                                  const struct xc5000_config *cfg)
  54 {
  55         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  56         return NULL;
  57 }
  58 #endif
  59
  60 #endif