LXR linux/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/driver-api/media/drivers/dvb-usb.rst for more information
   7*/
   8
   9#ifndef Z0194A
  10#define Z0194A
  11
  12static 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
  40static 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
  83