drivers/media/tuners/tua9001.h

   1 /*
   2  * Infineon TUA 9001 silicon tuner driver
   3  *
   4  * Copyright (C) 2009 Antti Palosaari <crope@iki.fi>
   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  *    GNU General Public License for more details.
  15  *
  16  *    You should have received a copy of the GNU General Public License along
  17  *    with this program; if not, write to the Free Software Foundation, Inc.,
  18  *    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  */
  20
  21 #ifndef TUA9001_H
  22 #define TUA9001_H
  23
  24 #include <linux/kconfig.h>
  25 #include "dvb_frontend.h"
  26
  27 struct tua9001_config {
  28         /*
  29          * I2C address
  30          */
  31         u8 i2c_addr;
  32 };
  33
  34 /*
  35  * TUA9001 I/O PINs:
  36  *
  37  * CEN - chip enable
  38  * 0 = chip disabled (chip off)
  39  * 1 = chip enabled (chip on)
  40  *
  41  * RESETN - chip reset
  42  * 0 = reset disabled (chip reset off)
  43  * 1 = reset enabled (chip reset on)
  44  *
  45  * RXEN - RX enable
  46  * 0 = RX disabled (chip idle)
  47  * 1 = RX enabled (chip tuned)
  48  */
  49
  50 #define TUA9001_CMD_CEN     0
  51 #define TUA9001_CMD_RESETN  1
  52 #define TUA9001_CMD_RXEN    2
  53
  54 #if IS_ENABLED(CONFIG_MEDIA_TUNER_TUA9001)
  55 extern struct dvb_frontend *tua9001_attach(struct dvb_frontend *fe,
  56                 struct i2c_adapter *i2c, struct tua9001_config *cfg);
  57 #else
  58 static inline struct dvb_frontend *tua9001_attach(struct dvb_frontend *fe,
  59                 struct i2c_adapter *i2c, struct tua9001_config *cfg)
  60 {
  61         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  62         return NULL;
  63 }
  64 #endif
  65
  66 #endif