drivers/media/dvb-frontends/drxd.h

   1 /*
   2  * drxd.h: DRXD DVB-T demodulator driver
   3  *
   4  * Copyright (C) 2005-2007 Micronas
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * version 2 only, as published by the Free Software Foundation.
   9  *
  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  * GNU General Public License for more details.
  15  *
  16  * To obtain the license, point your browser to
  17  * http://www.gnu.org/copyleft/gpl.html
  18  */
  19
  20 #ifndef _DRXD_H_
  21 #define _DRXD_H_
  22
  23 #include <linux/types.h>
  24 #include <linux/i2c.h>
  25
  26 struct drxd_config {
  27         u8 index;
  28
  29         u8 pll_address;
  30         u8 pll_type;
  31 #define DRXD_PLL_NONE     0
  32 #define DRXD_PLL_DTT7520X 1
  33 #define DRXD_PLL_MT3X0823 2
  34
  35         u32 clock;
  36         u8 insert_rs_byte;
  37
  38         u8 demod_address;
  39         u8 demoda_address;
  40         u8 demod_revision;
  41
  42         /* If the tuner is not behind an i2c gate, be sure to flip this bit
  43            or else the i2c bus could get wedged */
  44         u8 disable_i2c_gate_ctrl;
  45
  46         u32 IF;
  47          s16(*osc_deviation) (void *priv, s16 dev, int flag);
  48 };
  49
  50 #if IS_REACHABLE(CONFIG_DVB_DRXD)
  51 extern
  52 struct dvb_frontend *drxd_attach(const struct drxd_config *config,
  53                                  void *priv, struct i2c_adapter *i2c,
  54                                  struct device *dev);
  55 #else
  56 static inline
  57 struct dvb_frontend *drxd_attach(const struct drxd_config *config,
  58                                  void *priv, struct i2c_adapter *i2c,
  59                                  struct device *dev)
  60 {
  61         printk(KERN_INFO "%s: not probed - driver disabled by Kconfig\n",
  62                __func__);
  63         return NULL;
  64 }
  65 #endif
  66
  67 #endif