LXR linux/drivers/media/dvb-frontends/ec100.h

   1/*
   2 * E3C EC100 demodulator 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
  17 *    along with this program; if not, write to the Free Software
  18 *    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19 *
  20 */
  21
  22#ifndef EC100_H
  23#define EC100_H
  24
  25#include <linux/kconfig.h>
  26#include <linux/dvb/frontend.h>
  27
  28struct ec100_config {
  29        /* demodulator's I2C address */
  30        u8 demod_address;
  31};
  32
  33
  34#if IS_ENABLED(CONFIG_DVB_EC100)
  35extern struct dvb_frontend *ec100_attach(const struct ec100_config *config,
  36        struct i2c_adapter *i2c);
  37#else
  38static inline struct dvb_frontend *ec100_attach(
  39        const struct ec100_config *config, struct i2c_adapter *i2c)
  40{
  41        pr_warn("%s: driver disabled by Kconfig\n", __func__);
  42        return NULL;
  43}
  44#endif
  45
  46#endif /* EC100_H */
  47