drivers/media/dvb/frontends/lgs8gxx.h

   1 /*
   2  *    Support for Legend Silicon DMB-TH demodulator
   3  *    LGS8913, LGS8GL5
   4  *    experimental support LGS8G42, LGS8G52
   5  *
   6  *    Copyright (C) 2007,2008 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/dvb/frontend.h>
  30 #include <linux/i2c.h>
  31
  32 #define LGS8GXX_PROD_LGS8913 0
  33 #define LGS8GXX_PROD_LGS8GL5 1
  34 #define LGS8GXX_PROD_LGS8G42 3
  35 #define LGS8GXX_PROD_LGS8G52 4
  36 #define LGS8GXX_PROD_LGS8G54 5
  37
  38 struct lgs8gxx_config {
  39
  40         /* product type */
  41         u8 prod;
  42
  43         /* the demodulator's i2c address */
  44         u8 demod_address;
  45
  46         /* parallel or serial transport stream */
  47         u8 serial_ts;
  48
  49         /* transport stream polarity*/
  50         u8 ts_clk_pol;
  51
  52         /* transport stream clock gated by ts_valid */
  53         u8 ts_clk_gated;
  54
  55         /* A/D Clock frequency */
  56         u32 if_clk_freq; /* in kHz */
  57
  58         /* IF frequency */
  59         u32 if_freq; /* in kHz */
  60
  61         /*Use External ADC*/
  62         u8 ext_adc;
  63
  64         /*External ADC output two's complement*/
  65         u8 adc_signed;
  66
  67         /*Sample IF data at falling edge of IF_CLK*/
  68         u8 if_neg_edge;
  69
  70         /*IF use Negative center frequency*/
  71         u8 if_neg_center;
  72
  73         /* slave address and configuration of the tuner */
  74         u8 tuner_address;
  75 };
  76
  77 #if defined(CONFIG_DVB_LGS8GXX) || \
  78         (defined(CONFIG_DVB_LGS8GXX_MODULE) && defined(MODULE))
  79 extern struct dvb_frontend *lgs8gxx_attach(const struct lgs8gxx_config *config,
  80                                            struct i2c_adapter *i2c);
  81 #else
  82 static inline
  83 struct 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__ */