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 *    You should have received a copy of the GNU General Public License
  21 *    along with this program; if not, write to the Free Software
  22 *    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  23 *
  24 */
  25
  26#ifndef __LGS8GXX_H__
  27#define __LGS8GXX_H__
  28
  29#include <linux/kconfig.h>
  30#include <linux/dvb/frontend.h>
  31#include <linux/i2c.h>
  32
  33#define LGS8GXX_PROD_LGS8913 0
  34#define LGS8GXX_PROD_LGS8GL5 1
  35#define LGS8GXX_PROD_LGS8G42 3
  36#define LGS8GXX_PROD_LGS8G52 4
  37#define LGS8GXX_PROD_LGS8G54 5
  38#define LGS8GXX_PROD_LGS8G75 6
  39
  40struct lgs8gxx_config {
  41
  42        /* product type */
  43        u8 prod;
  44
  45        /* the demodulator's i2c address */
  46        u8 demod_address;
  47
  48        /* parallel or serial transport stream */
  49        u8 serial_ts;
  50
  51        /* transport stream polarity*/
  52        u8 ts_clk_pol;
  53
  54        /* transport stream clock gated by ts_valid */
  55        u8 ts_clk_gated;
  56
  57        /* A/D Clock frequency */
  58        u32 if_clk_freq; /* in kHz */
  59
  60        /* IF frequency */
  61        u32 if_freq; /* in kHz */
  62
  63        /*Use External ADC*/
  64        u8 ext_adc;
  65
  66        /*External ADC output two's complement*/
  67        u8 adc_signed;
  68
  69        /*Sample IF data at falling edge of IF_CLK*/
  70        u8 if_neg_edge;
  71
  72        /*IF use Negative center frequency*/
  73        u8 if_neg_center;
  74
  75        /*8G75 internal ADC input range selection*/
  76        /*0: 0.8Vpp, 1: 1.0Vpp, 2: 1.6Vpp, 3: 2.0Vpp*/
  77        u8 adc_vpp;
  78
  79        /* slave address and configuration of the tuner */
  80        u8 tuner_address;
  81};
  82
  83#if IS_ENABLED(CONFIG_DVB_LGS8GXX)
  84extern struct dvb_frontend *lgs8gxx_attach(const struct lgs8gxx_config *config,
  85                                           struct i2c_adapter *i2c);
  86#else
  87static inline
  88struct dvb_frontend *lgs8gxx_attach(const struct lgs8gxx_config *config,
  89                                    struct i2c_adapter *i2c) {
  90        printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  91        return NULL;
  92}
  93#endif /* CONFIG_DVB_LGS8GXX */
  94
  95#endif /* __LGS8GXX_H__ */
  96