drivers/media/tuners/e4000.h

   1 /*
   2  * Elonics E4000 silicon tuner driver
   3  *
   4  * Copyright (C) 2012 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 E4000_H
  22 #define E4000_H
  23
  24 #include <linux/kconfig.h>
  25 #include "dvb_frontend.h"
  26
  27 struct e4000_config {
  28         /*
  29          * I2C address
  30          * 0x64, 0x65, 0x66, 0x67
  31          */
  32         u8 i2c_addr;
  33
  34         /*
  35          * clock
  36          */
  37         u32 clock;
  38 };
  39
  40 #if IS_ENABLED(CONFIG_MEDIA_TUNER_E4000)
  41 extern struct dvb_frontend *e4000_attach(struct dvb_frontend *fe,
  42                 struct i2c_adapter *i2c, const struct e4000_config *cfg);
  43 #else
  44 static inline struct dvb_frontend *e4000_attach(struct dvb_frontend *fe,
  45                 struct i2c_adapter *i2c, const struct e4000_config *cfg)
  46 {
  47         dev_warn(&i2c->dev, "%s: driver disabled by Kconfig\n", __func__);
  48         return NULL;
  49 }
  50 #endif
  51
  52 #endif