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 *
  16 * You should have received a copy of the GNU General Public License
  17 * along with this program; if not, write to the Free Software
  18 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  19 * Or, point your browser to http://www.gnu.org/copyleft/gpl.html
  20 *
  21 *
  22 * the project's page is at http://www.linuxtv.org
  23 */
  24
  25#ifndef BSRU6_H
  26#define BSRU6_H
  27
  28static u8 alps_bsru6_inittab[] = {
  29        0x01, 0x15,
  30        0x02, 0x00,
  31        0x03, 0x00,
  32        0x04, 0x7d,   /* F22FR = 0x7d, F22 = f_VCO / 128 / 0x7d = 22 kHz */
  33        0x05, 0x35,   /* I2CT = 0, SCLT = 1, SDAT = 1 */
  34        0x06, 0x40,   /* DAC not used, set to high impendance mode */
  35        0x07, 0x00,   /* DAC LSB */
  36        0x08, 0x40,   /* DiSEqC off, LNB power on OP2/LOCK pin on */
  37        0x09, 0x00,   /* FIFO */
  38        0x0c, 0x51,   /* OP1 ctl = Normal, OP1 val = 1 (LNB Power ON) */
  39        0x0d, 0x82,   /* DC offset compensation = ON, beta_agc1 = 2 */
  40        0x0e, 0x23,   /* alpha_tmg = 2, beta_tmg = 3 */
  41        0x10, 0x3f,   // AGC2  0x3d
  42        0x11, 0x84,
  43        0x12, 0xb9,
  44        0x15, 0xc9,   // lock detector threshold
  45        0x16, 0x00,
  46        0x17, 0x00,
  47        0x18, 0x00,
  48        0x19, 0x00,
  49        0x1a, 0x00,
  50        0x1f, 0x50,
  51        0x20, 0x00,
  52        0x21, 0x00,
  53        0x22, 0x00,
  54        0x23, 0x00,
  55        0x28, 0x00,  // out imp: normal  out type: parallel FEC mode:0
  56        0x29, 0x1e,  // 1/2 threshold
  57        0x2a, 0x14,  // 2/3 threshold
  58        0x2b, 0x0f,  // 3/4 threshold
  59        0x2c, 0x09,  // 5/6 threshold
  60        0x2d, 0x05,  // 7/8 threshold
  61        0x2e, 0x01,
  62        0x31, 0x1f,  // test all FECs
  63        0x32, 0x19,  // viterbi and synchro search
  64        0x33, 0xfc,  // rs control
  65        0x34, 0x93,  // error control
  66        0x0f, 0x52,
  67        0xff, 0xff
  68};
  69
  70static int alps_bsru6_set_symbol_rate(struct dvb_frontend *fe, u32 srate, u32 ratio)
  71{
  72        u8 aclk = 0;
  73        u8 bclk = 0;
  74
  75        if (srate < 1500000) {
  76                aclk = 0xb7;
  77                bclk = 0x47;
  78        } else if (srate < 3000000) {
  79                aclk = 0xb7;
  80                bclk = 0x4b;
  81        } else if (srate < 7000000) {
  82                aclk = 0xb7;
  83                bclk = 0x4f;
  84        } else if (srate < 14000000) {
  85                aclk = 0xb7;
  86                bclk = 0x53;
  87        } else if (srate < 30000000) {
  88                aclk = 0xb6;
  89                bclk = 0x53;
  90        } else if (srate < 45000000) {
  91                aclk = 0xb4;
  92                bclk = 0x51;
  93        }
  94
  95        stv0299_writereg(fe, 0x13, aclk);
  96        stv0299_writereg(fe, 0x14, bclk);
  97        stv0299_writereg(fe, 0x1f, (ratio >> 16) & 0xff);
  98        stv0299_writereg(fe, 0x20, (ratio >> 8) & 0xff);
  99        stv0299_writereg(fe, 0x21, ratio & 0xf0);
 100
 101        return 0;
 102}
 103
 104static int alps_bsru6_tuner_set_params(struct dvb_frontend *fe, struct dvb_frontend_parameters *params)
 105{
 106        u8 buf[4];
 107        u32 div;
 108        struct i2c_msg msg = { .addr = 0x61, .flags = 0, .buf = buf, .len = sizeof(buf) };
 109        struct i2c_adapter *i2c = fe->tuner_priv;
 110
 111        if ((params->frequency < 950000) || (params->frequency > 2150000))
 112                return -EINVAL;
 113
 114        div = (params->frequency + (125 - 1)) / 125;    // round correctly
 115        buf[0] = (div >> 8) & 0x7f;
 116        buf[1] = div & 0xff;
 117        buf[2] = 0x80 | ((div & 0x18000) >> 10) | 4;
 118        buf[3] = 0xC4;
 119
 120        if (params->frequency > 1530000)
 121                buf[3] = 0xc0;
 122
 123        if (fe->ops.i2c_gate_ctrl)
 124                fe->ops.i2c_gate_ctrl(fe, 1);
 125        if (i2c_transfer(i2c, &msg, 1) != 1)
 126                return -EIO;
 127        return 0;
 128}
 129
 130static struct stv0299_config alps_bsru6_config = {
 131        .demod_address = 0x68,
 132        .inittab = alps_bsru6_inittab,
 133        .mclk = 88000000UL,
 134        .invert = 1,
 135        .skip_reinit = 0,
 136        .lock_output = STV0299_LOCKOUTPUT_1,
 137        .volt13_op0_op1 = STV0299_VOLT13_OP1,
 138        .min_delay_ms = 100,
 139        .set_symbol_rate = alps_bsru6_set_symbol_rate,
 140};
 141
 142#endif
 143