drivers/media/usb/dvb-usb-v2/mxl111sf-demod.h

   1 /*
   2  *  mxl111sf-demod.h - driver for the MaxLinear MXL111SF DVB-T demodulator
   3  *
   4  *  Copyright (C) 2010-2014 Michael Krufky <mkrufky@linuxtv.org>
   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
  17 #ifndef __MXL111SF_DEMOD_H__
  18 #define __MXL111SF_DEMOD_H__
  19
  20 #include <media/dvb_frontend.h>
  21 #include "mxl111sf.h"
  22
  23 struct mxl111sf_demod_config {
  24         int (*read_reg)(struct mxl111sf_state *state, u8 addr, u8 *data);
  25         int (*write_reg)(struct mxl111sf_state *state, u8 addr, u8 data);
  26         int (*program_regs)(struct mxl111sf_state *state,
  27                             struct mxl111sf_reg_ctrl_info *ctrl_reg_info);
  28 };
  29
  30 #if IS_ENABLED(CONFIG_DVB_USB_MXL111SF)
  31 extern
  32 struct dvb_frontend *mxl111sf_demod_attach(struct mxl111sf_state *mxl_state,
  33                                    const struct mxl111sf_demod_config *cfg);
  34 #else
  35 static inline
  36 struct dvb_frontend *mxl111sf_demod_attach(struct mxl111sf_state *mxl_state,
  37                                    const struct mxl111sf_demod_config *cfg)
  38 {
  39         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  40         return NULL;
  41 }
  42 #endif /* CONFIG_DVB_USB_MXL111SF */
  43
  44 #endif /* __MXL111SF_DEMOD_H__ */