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kernel/linux-imx6_3.14.28/drivers/media/tuners/xc5000.h 2.14 KB
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  /*
   *  Driver for Xceive XC5000 "QAM/8VSB single chip tuner"
   *
   *  Copyright (c) 2007 Steven Toth <stoth@linuxtv.org>
   *
   *  This program is free software; you can redistribute it and/or modify
   *  it under the terms of the GNU General Public License as published by
   *  the Free Software Foundation; either version 2 of the License, or
   *  (at your option) any later version.
   *
   *  This program is distributed in the hope that it will be useful,
   *  but WITHOUT ANY WARRANTY; without even the implied warranty of
   *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   *
   *  GNU General Public License for more details.
   *
   *  You should have received a copy of the GNU General Public License
   *  along with this program; if not, write to the Free Software
   *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
   */
  
  #ifndef __XC5000_H__
  #define __XC5000_H__
  
  #include <linux/kconfig.h>
  #include <linux/firmware.h>
  
  struct dvb_frontend;
  struct i2c_adapter;
  
  #define XC5000A 1
  #define XC5000C 2
  
  struct xc5000_config {
  	u8   i2c_address;
  	u32  if_khz;
  	u8   radio_input;
  	u16  xtal_khz;
  
  	int chip_id;
  };
  
  /* xc5000 callback command */
  #define XC5000_TUNER_RESET		0
  
  /* Possible Radio inputs */
  #define XC5000_RADIO_NOT_CONFIGURED		0
  #define XC5000_RADIO_FM1			1
  #define XC5000_RADIO_FM2			2
  #define XC5000_RADIO_FM1_MONO			3
  
  /* For each bridge framework, when it attaches either analog or digital,
   * it has to store a reference back to its _core equivalent structure,
   * so that it can service the hardware by steering gpio's etc.
   * Each bridge implementation is different so cast devptr accordingly.
   * The xc5000 driver cares not for this value, other than ensuring
   * it's passed back to a bridge during tuner_callback().
   */
  
  #if IS_ENABLED(CONFIG_MEDIA_TUNER_XC5000)
  extern struct dvb_frontend *xc5000_attach(struct dvb_frontend *fe,
  					  struct i2c_adapter *i2c,
  					  const struct xc5000_config *cfg);
  #else
  static inline struct dvb_frontend *xc5000_attach(struct dvb_frontend *fe,
  						 struct i2c_adapter *i2c,
  						 const struct xc5000_config *cfg)
  {
  	printk(KERN_WARNING "%s: driver disabled by Kconfig
  ", __func__);
  	return NULL;
  }
  #endif
  
  #endif