drivers/media/dvb/frontends/z0194a.h

   1 /* z0194a.h Sharp z0194a tuner support
   2 *
   3 * Copyright (C) 2008 Igor M. Liplianin (liplianin@me.by)
   4 *
   5 *       This program is free software; you can redistribute it and/or modify it
   6 *       under the terms of the GNU General Public License as published by the
   7 *       Free Software Foundation, version 2.
   8 *
   9 * see Documentation/dvb/README.dvb-usb for more information
  10 */
  11
  12 #ifndef Z0194A
  13 #define Z0194A
  14
  15 static int sharp_z0194a_set_symbol_rate(struct dvb_frontend *fe,
  16                                          u32 srate, u32 ratio)
  17 {
  18         u8 aclk = 0;
  19         u8 bclk = 0;
  20
  21         if (srate < 1500000) {
  22                 aclk = 0xb7; bclk = 0x47; }
  23         else if (srate < 3000000) {
  24                 aclk = 0xb7; bclk = 0x4b; }
  25         else if (srate < 7000000) {
  26                 aclk = 0xb7; bclk = 0x4f; }
  27         else if (srate < 14000000) {
  28                 aclk = 0xb7; bclk = 0x53; }
  29         else if (srate < 30000000) {
  30                 aclk = 0xb6; bclk = 0x53; }
  31         else if (srate < 45000000) {
  32                 aclk = 0xb4; bclk = 0x51; }
  33
  34         stv0299_writereg(fe, 0x13, aclk);
  35         stv0299_writereg(fe, 0x14, bclk);
  36         stv0299_writereg(fe, 0x1f, (ratio >> 16) & 0xff);
  37         stv0299_writereg(fe, 0x20, (ratio >> 8) & 0xff);
  38         stv0299_writereg(fe, 0x21, (ratio) & 0xf0);
  39
  40         return 0;
  41 }
  42
  43 static u8 sharp_z0194a_inittab[] = {
  44         0x01, 0x15,
  45         0x02, 0x00,
  46         0x03, 0x00,
  47         0x04, 0x7d,   /* F22FR = 0x7d, F22 = f_VCO / 128 / 0x7d = 22 kHz */
  48         0x05, 0x35,   /* I2CT = 0, SCLT = 1, SDAT = 1 */
  49         0x06, 0x40,   /* DAC not used, set to high impendance mode */
  50         0x07, 0x00,   /* DAC LSB */
  51         0x08, 0x40,   /* DiSEqC off, LNB power on OP2/LOCK pin on */
  52         0x09, 0x00,   /* FIFO */
  53         0x0c, 0x51,   /* OP1 ctl = Normal, OP1 val = 1 (LNB Power ON) */
  54         0x0d, 0x82,   /* DC offset compensation = ON, beta_agc1 = 2 */
  55         0x0e, 0x23,   /* alpha_tmg = 2, beta_tmg = 3 */
  56         0x10, 0x3f,   /* AGC2  0x3d */
  57         0x11, 0x84,
  58         0x12, 0xb9,
  59         0x15, 0xc9,   /* lock detector threshold */
  60         0x16, 0x00,
  61         0x17, 0x00,
  62         0x18, 0x00,
  63         0x19, 0x00,
  64         0x1a, 0x00,
  65         0x1f, 0x50,
  66         0x20, 0x00,
  67         0x21, 0x00,
  68         0x22, 0x00,
  69         0x23, 0x00,
  70         0x28, 0x00,  /* out imp: normal  out type: parallel FEC mode:0 */
  71         0x29, 0x1e,  /* 1/2 threshold */
  72         0x2a, 0x14,  /* 2/3 threshold */
  73         0x2b, 0x0f,  /* 3/4 threshold */
  74         0x2c, 0x09,  /* 5/6 threshold */
  75         0x2d, 0x05,  /* 7/8 threshold */
  76         0x2e, 0x01,
  77         0x31, 0x1f,  /* test all FECs */
  78         0x32, 0x19,  /* viterbi and synchro search */
  79         0x33, 0xfc,  /* rs control */
  80         0x34, 0x93,  /* error control */
  81         0x0f, 0x52,
  82         0xff, 0xff
  83 };
  84
  85 #endif