drivers/media/dvb-frontends/lgs8gxx.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  *    Support for Legend Silicon GB20600 (a.k.a DMB-TH) demodulator
   4  *    LGS8913, LGS8GL5, LGS8G75
   5  *    experimental support LGS8G42, LGS8G52
   6  *
   7  *    Copyright (C) 2007-2009 David T.L. Wong <davidtlwong@gmail.com>
   8  *    Copyright (C) 2008 Sirius International (Hong Kong) Limited
   9  *    Timothy Lee <timothy.lee@siriushk.com> (for initial work on LGS8GL5)
  10  */
  11
  12 #ifndef __LGS8GXX_H__
  13 #define __LGS8GXX_H__
  14
  15 #include <linux/dvb/frontend.h>
  16 #include <linux/i2c.h>
  17
  18 #define LGS8GXX_PROD_LGS8913 0
  19 #define LGS8GXX_PROD_LGS8GL5 1
  20 #define LGS8GXX_PROD_LGS8G42 3
  21 #define LGS8GXX_PROD_LGS8G52 4
  22 #define LGS8GXX_PROD_LGS8G54 5
  23 #define LGS8GXX_PROD_LGS8G75 6
  24
  25 struct lgs8gxx_config {
  26
  27         /* product type */
  28         u8 prod;
  29
  30         /* the demodulator's i2c address */
  31         u8 demod_address;
  32
  33         /* parallel or serial transport stream */
  34         u8 serial_ts;
  35
  36         /* transport stream polarity*/
  37         u8 ts_clk_pol;
  38
  39         /* transport stream clock gated by ts_valid */
  40         u8 ts_clk_gated;
  41
  42         /* A/D Clock frequency */
  43         u32 if_clk_freq; /* in kHz */
  44
  45         /* IF frequency */
  46         u32 if_freq; /* in kHz */
  47
  48         /*Use External ADC*/
  49         u8 ext_adc;
  50
  51         /*External ADC output two's complement*/
  52         u8 adc_signed;
  53
  54         /*Sample IF data at falling edge of IF_CLK*/
  55         u8 if_neg_edge;
  56
  57         /*IF use Negative center frequency*/
  58         u8 if_neg_center;
  59
  60         /*8G75 internal ADC input range selection*/
  61         /*0: 0.8Vpp, 1: 1.0Vpp, 2: 1.6Vpp, 3: 2.0Vpp*/
  62         u8 adc_vpp;
  63
  64         /* slave address and configuration of the tuner */
  65         u8 tuner_address;
  66 };
  67
  68 #if IS_REACHABLE(CONFIG_DVB_LGS8GXX)
  69 extern struct dvb_frontend *lgs8gxx_attach(const struct lgs8gxx_config *config,
  70                                            struct i2c_adapter *i2c);
  71 #else
  72 static inline
  73 struct dvb_frontend *lgs8gxx_attach(const struct lgs8gxx_config *config,
  74                                     struct i2c_adapter *i2c) {
  75         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  76         return NULL;
  77 }
  78 #endif /* CONFIG_DVB_LGS8GXX */
  79
  80 #endif /* __LGS8GXX_H__ */