drivers/media/dvb-frontends/lgdt330x.h

   1 /*
   2  *    Support for LGDT3302 and LGDT3303 - VSB/QAM
   3  *
   4  *    Copyright (C) 2005 Wilson Michaels <wilsonmichaels@earthlink.net>
   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
  18 #ifndef LGDT330X_H
  19 #define LGDT330X_H
  20
  21 #include <linux/dvb/frontend.h>
  22
  23 typedef enum lg_chip_t {
  24                 UNDEFINED,
  25                 LGDT3302,
  26                 LGDT3303
  27 }lg_chip_type;
  28
  29 struct lgdt330x_config
  30 {
  31         /* The demodulator's i2c address */
  32         u8 demod_address;
  33
  34         /* LG demodulator chip LGDT3302 or LGDT3303 */
  35         lg_chip_type demod_chip;
  36
  37         /* MPEG hardware interface - 0:parallel 1:serial */
  38         int serial_mpeg;
  39
  40         /* PLL interface */
  41         int (*pll_rf_set) (struct dvb_frontend* fe, int index);
  42
  43         /* Need to set device param for start_dma */
  44         int (*set_ts_params)(struct dvb_frontend* fe, int is_punctured);
  45
  46         /* Flip the polarity of the mpeg data transfer clock using alternate init data
  47          * This option applies ONLY to LGDT3303 - 0:disabled (default) 1:enabled */
  48         int clock_polarity_flip;
  49 };
  50
  51 #if IS_REACHABLE(CONFIG_DVB_LGDT330X)
  52 extern struct dvb_frontend* lgdt330x_attach(const struct lgdt330x_config* config,
  53                                             struct i2c_adapter* i2c);
  54 #else
  55 static inline struct dvb_frontend* lgdt330x_attach(const struct lgdt330x_config* config,
  56                                             struct i2c_adapter* i2c)
  57 {
  58         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  59         return NULL;
  60 }
  61 #endif // CONFIG_DVB_LGDT330X
  62
  63 #endif /* LGDT330X_H */