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  *    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 LGDT330X_H
  23 #define LGDT330X_H
  24
  25 #include <linux/dvb/frontend.h>
  26
  27 typedef enum lg_chip_t {
  28                 UNDEFINED,
  29                 LGDT3302,
  30                 LGDT3303
  31 }lg_chip_type;
  32
  33 struct lgdt330x_config
  34 {
  35         /* The demodulator's i2c address */
  36         u8 demod_address;
  37
  38         /* LG demodulator chip LGDT3302 or LGDT3303 */
  39         lg_chip_type demod_chip;
  40
  41         /* MPEG hardware interface - 0:parallel 1:serial */
  42         int serial_mpeg;
  43
  44         /* PLL interface */
  45         int (*pll_rf_set) (struct dvb_frontend* fe, int index);
  46
  47         /* Need to set device param for start_dma */
  48         int (*set_ts_params)(struct dvb_frontend* fe, int is_punctured);
  49
  50         /* Flip the polarity of the mpeg data transfer clock using alternate init data
  51          * This option applies ONLY to LGDT3303 - 0:disabled (default) 1:enabled */
  52         int clock_polarity_flip;
  53 };
  54
  55 #if IS_REACHABLE(CONFIG_DVB_LGDT330X)
  56 extern struct dvb_frontend* lgdt330x_attach(const struct lgdt330x_config* config,
  57                                             struct i2c_adapter* i2c);
  58 #else
  59 static inline struct dvb_frontend* lgdt330x_attach(const struct lgdt330x_config* config,
  60                                             struct i2c_adapter* i2c)
  61 {
  62         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  63         return NULL;
  64 }
  65 #endif // CONFIG_DVB_LGDT330X
  66
  67 #endif /* LGDT330X_H */