drivers/media/dvb-frontends/lgdt3306a.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  *    Support for LGDT3306A - 8VSB/QAM-B
   4  *
   5  *    Copyright (C) 2013,2014 Fred Richter <frichter@hauppauge.com>
   6  *      based on lgdt3305.[ch] by Michael Krufky
   7  */
   8
   9 #ifndef _LGDT3306A_H_
  10 #define _LGDT3306A_H_
  11
  12 #include <linux/i2c.h>
  13 #include <media/dvb_frontend.h>
  14
  15
  16 enum lgdt3306a_mpeg_mode {
  17         LGDT3306A_MPEG_PARALLEL = 0,
  18         LGDT3306A_MPEG_SERIAL = 1,
  19 };
  20
  21 enum lgdt3306a_tp_clock_edge {
  22         LGDT3306A_TPCLK_RISING_EDGE = 0,
  23         LGDT3306A_TPCLK_FALLING_EDGE = 1,
  24 };
  25
  26 enum lgdt3306a_tp_valid_polarity {
  27         LGDT3306A_TP_VALID_LOW = 0,
  28         LGDT3306A_TP_VALID_HIGH = 1,
  29 };
  30
  31 struct lgdt3306a_config {
  32         u8 i2c_addr;
  33
  34         /* user defined IF frequency in KHz */
  35         u16 qam_if_khz;
  36         u16 vsb_if_khz;
  37
  38         /* disable i2c repeater - 0:repeater enabled 1:repeater disabled */
  39         unsigned int deny_i2c_rptr:1;
  40
  41         /* spectral inversion - 0:disabled 1:enabled */
  42         unsigned int spectral_inversion:1;
  43
  44         enum lgdt3306a_mpeg_mode mpeg_mode;
  45         enum lgdt3306a_tp_clock_edge tpclk_edge;
  46         enum lgdt3306a_tp_valid_polarity tpvalid_polarity;
  47
  48         /* demod clock freq in MHz; 24 or 25 supported */
  49         int  xtalMHz;
  50
  51         /* returned by driver if using i2c bus multiplexing */
  52         struct dvb_frontend **fe;
  53         struct i2c_adapter **i2c_adapter;
  54 };
  55
  56 #if IS_REACHABLE(CONFIG_DVB_LGDT3306A)
  57 struct dvb_frontend *lgdt3306a_attach(const struct lgdt3306a_config *config,
  58                                       struct i2c_adapter *i2c_adap);
  59 #else
  60 static inline
  61 struct dvb_frontend *lgdt3306a_attach(const struct lgdt3306a_config *config,
  62                                       struct i2c_adapter *i2c_adap)
  63 {
  64         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  65         return NULL;
  66 }
  67 #endif /* CONFIG_DVB_LGDT3306A */
  68
  69 #endif /* _LGDT3306A_H_ */