LXR linux/drivers/media/dvb-frontends/lgs8gxx.h

   1/*
   2 *    Support for Legend Silicon GB20600 (a.k.a DMB-TH) demodulator
   3 *    LGS8913, LGS8GL5, LGS8G75
   4 *    experimental support LGS8G42, LGS8G52
   5 *
   6 *    Copyright (C) 2007-2009 David T.L. Wong <davidtlwong@gmail.com>
   7 *    Copyright (C) 2008 Sirius International (Hong Kong) Limited
   8 *    Timothy Lee <timothy.lee@siriushk.com> (for initial work on LGS8GL5)
   9 *
  10 *    This program is free software; you can redistribute it and/or modify
  11 *    it under the terms of the GNU General Public License as published by
  12 *    the Free Software Foundation; either version 2 of the License, or
  13 *    (at your option) any later version.
  14 *
  15 *    This program is distributed in the hope that it will be useful,
  16 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 *    GNU General Public License for more details.
  19 *
  20 */
  21
  22#ifndef __LGS8GXX_H__
  23#define __LGS8GXX_H__
  24
  25#include <linux/dvb/frontend.h>
  26#include <linux/i2c.h>
  27
  28#define LGS8GXX_PROD_LGS8913 0
  29#define LGS8GXX_PROD_LGS8GL5 1
  30#define LGS8GXX_PROD_LGS8G42 3
  31#define LGS8GXX_PROD_LGS8G52 4
  32#define LGS8GXX_PROD_LGS8G54 5
  33#define LGS8GXX_PROD_LGS8G75 6
  34
  35struct lgs8gxx_config {
  36
  37        /* product type */
  38        u8 prod;
  39
  40        /* the demodulator's i2c address */
  41        u8 demod_address;
  42
  43        /* parallel or serial transport stream */
  44        u8 serial_ts;
  45
  46        /* transport stream polarity*/
  47        u8 ts_clk_pol;
  48
  49        /* transport stream clock gated by ts_valid */
  50        u8 ts_clk_gated;
  51
  52        /* A/D Clock frequency */
  53        u32 if_clk_freq; /* in kHz */
  54
  55        /* IF frequency */
  56        u32 if_freq; /* in kHz */
  57
  58        /*Use External ADC*/
  59        u8 ext_adc;
  60
  61        /*External ADC output two's complement*/
  62        u8 adc_signed;
  63
  64        /*Sample IF data at falling edge of IF_CLK*/
  65        u8 if_neg_edge;
  66
  67        /*IF use Negative center frequency*/
  68        u8 if_neg_center;
  69
  70        /*8G75 internal ADC input range selection*/
  71        /*0: 0.8Vpp, 1: 1.0Vpp, 2: 1.6Vpp, 3: 2.0Vpp*/
  72        u8 adc_vpp;
  73
  74        /* slave address and configuration of the tuner */
  75        u8 tuner_address;
  76};
  77
  78#if IS_REACHABLE(CONFIG_DVB_LGS8GXX)
  79extern struct dvb_frontend *lgs8gxx_attach(const struct lgs8gxx_config *config,
  80                                           struct i2c_adapter *i2c);
  81#else
  82static inline
  83struct dvb_frontend *lgs8gxx_attach(const struct lgs8gxx_config *config,
  84                                    struct i2c_adapter *i2c) {
  85        printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  86        return NULL;
  87}
  88#endif /* CONFIG_DVB_LGS8GXX */
  89
  90#endif /* __LGS8GXX_H__ */
  91