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kernel/linux-imx6_3.14.28/drivers/media/tuners/tua9001.h 1.77 KB
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  /*
   * Infineon TUA 9001 silicon tuner driver
   *
   * Copyright (C) 2009 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 TUA9001_H
  #define TUA9001_H
  
  #include <linux/kconfig.h>
  #include "dvb_frontend.h"
  
  struct tua9001_config {
  	/*
  	 * I2C address
  	 */
  	u8 i2c_addr;
  };
  
  /*
   * TUA9001 I/O PINs:
   *
   * CEN - chip enable
   * 0 = chip disabled (chip off)
   * 1 = chip enabled (chip on)
   *
   * RESETN - chip reset
   * 0 = reset disabled (chip reset off)
   * 1 = reset enabled (chip reset on)
   *
   * RXEN - RX enable
   * 0 = RX disabled (chip idle)
   * 1 = RX enabled (chip tuned)
   */
  
  #define TUA9001_CMD_CEN     0
  #define TUA9001_CMD_RESETN  1
  #define TUA9001_CMD_RXEN    2
  
  #if IS_ENABLED(CONFIG_MEDIA_TUNER_TUA9001)
  extern struct dvb_frontend *tua9001_attach(struct dvb_frontend *fe,
  		struct i2c_adapter *i2c, struct tua9001_config *cfg);
  #else
  static inline struct dvb_frontend *tua9001_attach(struct dvb_frontend *fe,
  		struct i2c_adapter *i2c, struct tua9001_config *cfg)
  {
  	printk(KERN_WARNING "%s: driver disabled by Kconfig
  ", __func__);
  	return NULL;
  }
  #endif
  
  #endif