LXR linux/drivers/media/dvb-frontends/bsru6.h

   1/*
   2 * bsru6.h - ALPS BSRU6 tuner support (moved from budget-ci.c)
   3 *
   4 * This program is free software; you can redistribute it and/or
   5 * modify it under the terms of the GNU General Public License
   6 * as published by the Free Software Foundation; either version 2
   7 * of the License, or (at your option) any later version.
   8 *
   9 *
  10 * This program is distributed in the hope that it will be useful,
  11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 * GNU General Public License for more details.
  14 *
  15 * To obtain the license, point your browser to
  16 * http://www.gnu.org/copyleft/gpl.html
  17 *
  18 *
  19 * the project's page is at https://linuxtv.org
  20 */
  21
  22#ifndef BSRU6_H
  23#define BSRU6_H
  24
  25static u8 alps_bsru6_inittab[] = {
  26        0x01, 0x15,
  27        0x02, 0x30,
  28        0x03, 0x00,
  29        0x04, 0x7d,   /* F22FR = 0x7d, F22 = f_VCO / 128 / 0x7d = 22 kHz */
  30        0x05, 0x35,   /* I2CT = 0, SCLT = 1, SDAT = 1 */
  31        0x06, 0x40,   /* DAC not used, set to high impendance mode */
  32        0x07, 0x00,   /* DAC LSB */
  33        0x08, 0x40,   /* DiSEqC off, LNB power on OP2/LOCK pin on */
  34        0x09, 0x00,   /* FIFO */
  35        0x0c, 0x51,   /* OP1 ctl = Normal, OP1 val = 1 (LNB Power ON) */
  36        0x0d, 0x82,   /* DC offset compensation = ON, beta_agc1 = 2 */
  37        0x0e, 0x23,   /* alpha_tmg = 2, beta_tmg = 3 */
  38        0x10, 0x3f,   // AGC2  0x3d
  39        0x11, 0x84,
  40        0x12, 0xb9,
  41        0x15, 0xc9,   // lock detector threshold
  42        0x16, 0x00,
  43        0x17, 0x00,
  44        0x18, 0x00,
  45        0x19, 0x00,
  46        0x1a, 0x00,
  47        0x1f, 0x50,
  48        0x20, 0x00,
  49        0x21, 0x00,
  50        0x22, 0x00,
  51        0x23, 0x00,
  52        0x28, 0x00,  // out imp: normal  out type: parallel FEC mode:0
  53        0x29, 0x1e,  // 1/2 threshold
  54        0x2a, 0x14,  // 2/3 threshold
  55        0x2b, 0x0f,  // 3/4 threshold
  56        0x2c, 0x09,  // 5/6 threshold
  57        0x2d, 0x05,  // 7/8 threshold
  58        0x2e, 0x01,
  59        0x31, 0x1f,  // test all FECs
  60        0x32, 0x19,  // viterbi and synchro search
  61        0x33, 0xfc,  // rs control
  62        0x34, 0x93,  // error control
  63        0x0f, 0x52,
  64        0xff, 0xff
  65};
  66
  67static int alps_bsru6_set_symbol_rate(struct dvb_frontend *fe, u32 srate, u32 ratio)
  68{
  69        u8 aclk = 0;
  70        u8 bclk = 0;
  71
  72        if (srate < 1500000) {
  73                aclk = 0xb7;
  74                bclk = 0x47;
  75        } else if (srate < 3000000) {
  76                aclk = 0xb7;
  77                bclk = 0x4b;
  78        } else if (srate < 7000000) {
  79                aclk = 0xb7;
  80                bclk = 0x4f;
  81        } else if (srate < 14000000) {
  82                aclk = 0xb7;
  83                bclk = 0x53;
  84        } else if (srate < 30000000) {
  85                aclk = 0xb6;
  86                bclk = 0x53;
  87        } else if (srate < 45000000) {
  88                aclk = 0xb4;
  89                bclk = 0x51;
  90        }
  91
  92        stv0299_writereg(fe, 0x13, aclk);
  93        stv0299_writereg(fe, 0x14, bclk);
  94        stv0299_writereg(fe, 0x1f, (ratio >> 16) & 0xff);
  95        stv0299_writereg(fe, 0x20, (ratio >> 8) & 0xff);
  96        stv0299_writereg(fe, 0x21, ratio & 0xf0);
  97
  98        return 0;
  99}
 100
 101static int alps_bsru6_tuner_set_params(struct dvb_frontend *fe)
 102{
 103        struct dtv_frontend_properties *p = &fe->dtv_property_cache;
 104        u8 buf[4];
 105        u32 div;
 106        struct i2c_msg msg = { .addr = 0x61, .flags = 0, .buf = buf, .len = sizeof(buf) };
 107        struct i2c_adapter *i2c = fe->tuner_priv;
 108
 109        if ((p->frequency < 950000) || (p->frequency > 2150000))
 110                return -EINVAL;
 111
 112        div = (p->frequency + (125 - 1)) / 125; /* round correctly */
 113        buf[0] = (div >> 8) & 0x7f;
 114        buf[1] = div & 0xff;
 115        buf[2] = 0x80 | ((div & 0x18000) >> 10) | 4;
 116        buf[3] = 0xC4;
 117
 118        if (p->frequency > 1530000)
 119                buf[3] = 0xc0;
 120
 121        if (fe->ops.i2c_gate_ctrl)
 122                fe->ops.i2c_gate_ctrl(fe, 1);
 123        if (i2c_transfer(i2c, &msg, 1) != 1)
 124                return -EIO;
 125        return 0;
 126}
 127
 128static struct stv0299_config alps_bsru6_config = {
 129        .demod_address = 0x68,
 130        .inittab = alps_bsru6_inittab,
 131        .mclk = 88000000UL,
 132        .invert = 1,
 133        .skip_reinit = 0,
 134        .lock_output = STV0299_LOCKOUTPUT_1,
 135        .volt13_op0_op1 = STV0299_VOLT13_OP1,
 136        .min_delay_ms = 100,
 137        .set_symbol_rate = alps_bsru6_set_symbol_rate,
 138};
 139
 140#endif
 141