drivers/media/dvb-frontends/hd29l2.h

   1 /*
   2  * HDIC HD29L2 DMB-TH demodulator driver
   3  *
   4  * Copyright (C) 2011 Metropolia University of Applied Sciences, Electria R&D
   5  *
   6  * Author: Antti Palosaari <crope@iki.fi>
   7  *
   8  *    This program is free software; you can redistribute it and/or modify
   9  *    it under the terms of the GNU General Public License as published by
  10  *    the Free Software Foundation; either version 2 of the License, or
  11  *    (at your option) any later version.
  12  *
  13  *    This program is distributed in the hope that it will be useful,
  14  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *    GNU General Public License for more details.
  17  *
  18  *    You should have received a copy of the GNU General Public License
  19  *    along with this program; if not, write to the Free Software
  20  *    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21  */
  22
  23 #ifndef HD29L2_H
  24 #define HD29L2_H
  25
  26 #include <linux/kconfig.h>
  27 #include <linux/dvb/frontend.h>
  28
  29 struct hd29l2_config {
  30         /*
  31          * demodulator I2C address
  32          */
  33         u8 i2c_addr;
  34
  35         /*
  36          * tuner I2C address
  37          * only needed when tuner is behind demod I2C-gate
  38          */
  39         u8 tuner_i2c_addr;
  40
  41         /*
  42          * TS settings
  43          */
  44 #define HD29L2_TS_SERIAL            0x00
  45 #define HD29L2_TS_PARALLEL          0x80
  46 #define HD29L2_TS_CLK_NORMAL        0x40
  47 #define HD29L2_TS_CLK_INVERTED      0x00
  48 #define HD29L2_TS_CLK_GATED         0x20
  49 #define HD29L2_TS_CLK_FREE          0x00
  50         u8 ts_mode;
  51 };
  52
  53
  54 #if IS_ENABLED(CONFIG_DVB_HD29L2)
  55 extern struct dvb_frontend *hd29l2_attach(const struct hd29l2_config *config,
  56         struct i2c_adapter *i2c);
  57 #else
  58 static inline struct dvb_frontend *hd29l2_attach(
  59 const struct hd29l2_config *config, struct i2c_adapter *i2c)
  60 {
  61         pr_warn("%s: driver disabled by Kconfig\n", __func__);
  62         return NULL;
  63 }
  64 #endif
  65
  66 #endif /* HD29L2_H */