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
  40 struct 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)
  84 extern struct dvb_frontend *lgs8gxx_attach(const struct lgs8gxx_config *config,
  85                                            struct i2c_adapter *i2c);
  86 #else
  87 static inline
  88 struct 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__ */