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

   1/* SPDX-License-Identifier: GPL-2.0-or-later */
   2/*
   3 * bsru6.h - ALPS BSRU6 tuner support (moved from budget-ci.c)
   4 *
   5 * the project's page is at https://linuxtv.org
   6 */
   7
   8#ifndef BSRU6_H
   9#define BSRU6_H
  10
  11static u8 alps_bsru6_inittab[] = {
  12        0x01, 0x15,
  13        0x02, 0x30,
  14        0x03, 0x00,
  15        0x04, 0x7d,   /* F22FR = 0x7d, F22 = f_VCO / 128 / 0x7d = 22 kHz */
  16        0x05, 0x35,   /* I2CT = 0, SCLT = 1, SDAT = 1 */
  17        0x06, 0x40,   /* DAC not used, set to high impendance mode */
  18        0x07, 0x00,   /* DAC LSB */
  19        0x08, 0x40,   /* DiSEqC off, LNB power on OP2/LOCK pin on */
  20        0x09, 0x00,   /* FIFO */
  21        0x0c, 0x51,   /* OP1 ctl = Normal, OP1 val = 1 (LNB Power ON) */
  22        0x0d, 0x82,   /* DC offset compensation = ON, beta_agc1 = 2 */
  23        0x0e, 0x23,   /* alpha_tmg = 2, beta_tmg = 3 */
  24        0x10, 0x3f,   // AGC2  0x3d
  25        0x11, 0x84,
  26        0x12, 0xb9,
  27        0x15, 0xc9,   // lock detector threshold
  28        0x16, 0x00,
  29        0x17, 0x00,
  30        0x18, 0x00,
  31        0x19, 0x00,
  32        0x1a, 0x00,
  33        0x1f, 0x50,
  34        0x20, 0x00,
  35        0x21, 0x00,
  36        0x22, 0x00,
  37        0x23, 0x00,
  38        0x28, 0x00,  // out imp: normal  out type: parallel FEC mode:0
  39        0x29, 0x1e,  // 1/2 threshold
  40        0x2a, 0x14,  // 2/3 threshold
  41        0x2b, 0x0f,  // 3/4 threshold
  42        0x2c, 0x09,  // 5/6 threshold
  43        0x2d, 0x05,  // 7/8 threshold
  44        0x2e, 0x01,
  45        0x31, 0x1f,  // test all FECs
  46        0x32, 0x19,  // viterbi and synchro search
  47        0x33, 0xfc,  // rs control
  48        0x34, 0x93,  // error control
  49        0x0f, 0x52,
  50        0xff, 0xff
  51};
  52
  53static int alps_bsru6_set_symbol_rate(struct dvb_frontend *fe, u32 srate, u32 ratio)
  54{
  55        u8 aclk = 0;
  56        u8 bclk = 0;
  57
  58        if (srate < 1500000) {
  59                aclk = 0xb7;
  60                bclk = 0x47;
  61        } else if (srate < 3000000) {
  62                aclk = 0xb7;
  63                bclk = 0x4b;
  64        } else if (srate < 7000000) {
  65                aclk = 0xb7;
  66                bclk = 0x4f;
  67        } else if (srate < 14000000) {
  68                aclk = 0xb7;
  69                bclk = 0x53;
  70        } else if (srate < 30000000) {
  71                aclk = 0xb6;
  72                bclk = 0x53;
  73        } else if (srate < 45000000) {
  74                aclk = 0xb4;
  75                bclk = 0x51;
  76        }
  77
  78        stv0299_writereg(fe, 0x13, aclk);
  79        stv0299_writereg(fe, 0x14, bclk);
  80        stv0299_writereg(fe, 0x1f, (ratio >> 16) & 0xff);
  81        stv0299_writereg(fe, 0x20, (ratio >> 8) & 0xff);
  82        stv0299_writereg(fe, 0x21, ratio & 0xf0);
  83
  84        return 0;
  85}
  86
  87static int alps_bsru6_tuner_set_params(struct dvb_frontend *fe)
  88{
  89        struct dtv_frontend_properties *p = &fe->dtv_property_cache;
  90        u8 buf[4];
  91        u32 div;
  92        struct i2c_msg msg = { .addr = 0x61, .flags = 0, .buf = buf, .len = sizeof(buf) };
  93        struct i2c_adapter *i2c = fe->tuner_priv;
  94
  95        if ((p->frequency < 950000) || (p->frequency > 2150000))
  96                return -EINVAL;
  97
  98        div = (p->frequency + (125 - 1)) / 125; /* round correctly */
  99        buf[0] = (div >> 8) & 0x7f;
 100        buf[1] = div & 0xff;
 101        buf[2] = 0x80 | ((div & 0x18000) >> 10) | 4;
 102        buf[3] = 0xC4;
 103
 104        if (p->frequency > 1530000)
 105                buf[3] = 0xc0;
 106
 107        if (fe->ops.i2c_gate_ctrl)
 108                fe->ops.i2c_gate_ctrl(fe, 1);
 109        if (i2c_transfer(i2c, &msg, 1) != 1)
 110                return -EIO;
 111        return 0;
 112}
 113
 114static struct stv0299_config alps_bsru6_config = {
 115        .demod_address = 0x68,
 116        .inittab = alps_bsru6_inittab,
 117        .mclk = 88000000UL,
 118        .invert = 1,
 119        .skip_reinit = 0,
 120        .lock_output = STV0299_LOCKOUTPUT_1,
 121        .volt13_op0_op1 = STV0299_VOLT13_OP1,
 122        .min_delay_ms = 100,
 123        .set_symbol_rate = alps_bsru6_set_symbol_rate,
 124};
 125
 126#endif
 127