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kernel/linux-imx6_3.14.28/drivers/media/tuners/r820t.h 1.57 KB
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  /*
   * Elonics R820T silicon tuner driver
   *
   * Copyright (C) 2012 Antti Palosaari <crope@iki.fi>
   *
   *    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.,
   *    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
   */
  
  #ifndef R820T_H
  #define R820T_H
  
  #include <linux/kconfig.h>
  #include "dvb_frontend.h"
  
  enum r820t_chip {
  	CHIP_R820T,
  	CHIP_R620D,
  	CHIP_R828D,
  	CHIP_R828,
  	CHIP_R828S,
  	CHIP_R820C,
  };
  
  struct r820t_config {
  	u8 i2c_addr;		/* 0x34 */
  	u32 xtal;
  	enum r820t_chip rafael_chip;
  	unsigned max_i2c_msg_len;
  	bool use_diplexer;
  	bool use_predetect;
  };
  
  #if IS_ENABLED(CONFIG_MEDIA_TUNER_R820T)
  struct dvb_frontend *r820t_attach(struct dvb_frontend *fe,
  				  struct i2c_adapter *i2c,
  				  const struct r820t_config *cfg);
  #else
  static inline struct dvb_frontend *r820t_attach(struct dvb_frontend *fe,
  						struct i2c_adapter *i2c,
  						const struct r820t_config *cfg)
  {
  	pr_warn("%s: driver disabled by Kconfig
  ", __func__);
  	return NULL;
  }
  #endif
  
  #endif