drivers/media/dvb-frontends/z0194a.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /* z0194a.h Sharp z0194a tuner support
   3 *
   4 * Copyright (C) 2008 Igor M. Liplianin (liplianin@me.by)
   5 *
   6 * see Documentation/media/dvb-drivers/dvb-usb.rst for more information
   7 */
   8
   9 #ifndef Z0194A
  10 #define Z0194A
  11
  12 static int sharp_z0194a_set_symbol_rate(struct dvb_frontend *fe,
  13                                          u32 srate, u32 ratio)
  14 {
  15         u8 aclk = 0;
  16         u8 bclk = 0;
  17
  18         if (srate < 1500000) {
  19                 aclk = 0xb7; bclk = 0x47; }
  20         else if (srate < 3000000) {
  21                 aclk = 0xb7; bclk = 0x4b; }
  22         else if (srate < 7000000) {
  23                 aclk = 0xb7; bclk = 0x4f; }
  24         else if (srate < 14000000) {
  25                 aclk = 0xb7; bclk = 0x53; }
  26         else if (srate < 30000000) {
  27                 aclk = 0xb6; bclk = 0x53; }
  28         else if (srate < 45000000) {
  29                 aclk = 0xb4; bclk = 0x51; }
  30
  31         stv0299_writereg(fe, 0x13, aclk);
  32         stv0299_writereg(fe, 0x14, bclk);
  33         stv0299_writereg(fe, 0x1f, (ratio >> 16) & 0xff);
  34         stv0299_writereg(fe, 0x20, (ratio >> 8) & 0xff);
  35         stv0299_writereg(fe, 0x21, (ratio) & 0xf0);
  36
  37         return 0;
  38 }
  39
  40 static u8 sharp_z0194a_inittab[] = {
  41         0x01, 0x15,
  42         0x02, 0x30,
  43         0x03, 0x00,
  44         0x04, 0x7d,   /* F22FR = 0x7d, F22 = f_VCO / 128 / 0x7d = 22 kHz */
  45         0x05, 0x35,   /* I2CT = 0, SCLT = 1, SDAT = 1 */
  46         0x06, 0x40,   /* DAC not used, set to high impendance mode */
  47         0x07, 0x00,   /* DAC LSB */
  48         0x08, 0x40,   /* DiSEqC off, LNB power on OP2/LOCK pin on */
  49         0x09, 0x00,   /* FIFO */
  50         0x0c, 0x51,   /* OP1 ctl = Normal, OP1 val = 1 (LNB Power ON) */
  51         0x0d, 0x82,   /* DC offset compensation = ON, beta_agc1 = 2 */
  52         0x0e, 0x23,   /* alpha_tmg = 2, beta_tmg = 3 */
  53         0x10, 0x3f,   /* AGC2  0x3d */
  54         0x11, 0x84,
  55         0x12, 0xb9,
  56         0x15, 0xc9,   /* lock detector threshold */
  57         0x16, 0x00,
  58         0x17, 0x00,
  59         0x18, 0x00,
  60         0x19, 0x00,
  61         0x1a, 0x00,
  62         0x1f, 0x50,
  63         0x20, 0x00,
  64         0x21, 0x00,
  65         0x22, 0x00,
  66         0x23, 0x00,
  67         0x28, 0x00,  /* out imp: normal  out type: parallel FEC mode:0 */
  68         0x29, 0x1e,  /* 1/2 threshold */
  69         0x2a, 0x14,  /* 2/3 threshold */
  70         0x2b, 0x0f,  /* 3/4 threshold */
  71         0x2c, 0x09,  /* 5/6 threshold */
  72         0x2d, 0x05,  /* 7/8 threshold */
  73         0x2e, 0x01,
  74         0x31, 0x1f,  /* test all FECs */
  75         0x32, 0x19,  /* viterbi and synchro search */
  76         0x33, 0xfc,  /* rs control */
  77         0x34, 0x93,  /* error control */
  78         0x0f, 0x52,
  79         0xff, 0xff
  80 };
  81
  82 #endif