drivers/media/tuners/mt2060.h

   1 /*
   2  *  Driver for Microtune MT2060 "Single chip dual conversion broadband tuner"
   3  *
   4  *  Copyright (c) 2006 Olivier DANET <odanet@caramail.com>
   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  *
  15  *  GNU General Public License for more details.
  16  */
  17
  18 #ifndef MT2060_H
  19 #define MT2060_H
  20
  21 struct dvb_frontend;
  22 struct i2c_adapter;
  23
  24 /*
  25  * I2C address
  26  * 0x60, ...
  27  */
  28
  29 /**
  30  * struct mt2060_platform_data - Platform data for the mt2060 driver
  31  * @clock_out: Clock output setting. 0 = off, 1 = CLK/4, 2 = CLK/2, 3 = CLK/1.
  32  * @if1: First IF used [MHz]. 0 defaults to 1220.
  33  * @i2c_write_max: Maximum number of bytes I2C adapter can write at once.
  34  *  0 defaults to maximum.
  35  * @dvb_frontend: DVB frontend.
  36  */
  37
  38 struct mt2060_platform_data {
  39         u8 clock_out;
  40         u16 if1;
  41         unsigned int i2c_write_max:5;
  42         struct dvb_frontend *dvb_frontend;
  43 };
  44
  45
  46 /* configuration struct for mt2060_attach() */
  47 struct mt2060_config {
  48         u8 i2c_address;
  49         u8 clock_out; /* 0 = off, 1 = CLK/4, 2 = CLK/2, 3 = CLK/1 */
  50 };
  51
  52 #if IS_REACHABLE(CONFIG_MEDIA_TUNER_MT2060)
  53 extern struct dvb_frontend * mt2060_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, struct mt2060_config *cfg, u16 if1);
  54 #else
  55 static inline struct dvb_frontend * mt2060_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, struct mt2060_config *cfg, u16 if1)
  56 {
  57         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  58         return NULL;
  59 }
  60 #endif // CONFIG_MEDIA_TUNER_MT2060
  61
  62 #endif