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bsru6.h

/*
 * bsru6.h - ALPS BSRU6 tuner support (moved from budget-ci.c)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 * Or, point your browser to http://www.gnu.org/copyleft/gpl.html
 *
 *
 * the project's page is at http://www.linuxtv.org
 */

#ifndef BSRU6_H
#define BSRU6_H

static u8 alps_bsru6_inittab[] = {
      0x01, 0x15,
      0x02, 0x00,
      0x03, 0x00,
      0x04, 0x7d,   /* F22FR = 0x7d, F22 = f_VCO / 128 / 0x7d = 22 kHz */
      0x05, 0x35,   /* I2CT = 0, SCLT = 1, SDAT = 1 */
      0x06, 0x40,   /* DAC not used, set to high impendance mode */
      0x07, 0x00,   /* DAC LSB */
      0x08, 0x40,   /* DiSEqC off, LNB power on OP2/LOCK pin on */
      0x09, 0x00,   /* FIFO */
      0x0c, 0x51,   /* OP1 ctl = Normal, OP1 val = 1 (LNB Power ON) */
      0x0d, 0x82,   /* DC offset compensation = ON, beta_agc1 = 2 */
      0x0e, 0x23,   /* alpha_tmg = 2, beta_tmg = 3 */
      0x10, 0x3f,   // AGC2  0x3d
      0x11, 0x84,
      0x12, 0xb9,
      0x15, 0xc9,   // lock detector threshold
      0x16, 0x00,
      0x17, 0x00,
      0x18, 0x00,
      0x19, 0x00,
      0x1a, 0x00,
      0x1f, 0x50,
      0x20, 0x00,
      0x21, 0x00,
      0x22, 0x00,
      0x23, 0x00,
      0x28, 0x00,  // out imp: normal  out type: parallel FEC mode:0
      0x29, 0x1e,  // 1/2 threshold
      0x2a, 0x14,  // 2/3 threshold
      0x2b, 0x0f,  // 3/4 threshold
      0x2c, 0x09,  // 5/6 threshold
      0x2d, 0x05,  // 7/8 threshold
      0x2e, 0x01,
      0x31, 0x1f,  // test all FECs
      0x32, 0x19,  // viterbi and synchro search
      0x33, 0xfc,  // rs control
      0x34, 0x93,  // error control
      0x0f, 0x52,
      0xff, 0xff
};

static int alps_bsru6_set_symbol_rate(struct dvb_frontend *fe, u32 srate, u32 ratio)
{
      u8 aclk = 0;
      u8 bclk = 0;

      if (srate < 1500000) {
            aclk = 0xb7;
            bclk = 0x47;
      } else if (srate < 3000000) {
            aclk = 0xb7;
            bclk = 0x4b;
      } else if (srate < 7000000) {
            aclk = 0xb7;
            bclk = 0x4f;
      } else if (srate < 14000000) {
            aclk = 0xb7;
            bclk = 0x53;
      } else if (srate < 30000000) {
            aclk = 0xb6;
            bclk = 0x53;
      } else if (srate < 45000000) {
            aclk = 0xb4;
            bclk = 0x51;
      }

      stv0299_writereg(fe, 0x13, aclk);
      stv0299_writereg(fe, 0x14, bclk);
      stv0299_writereg(fe, 0x1f, (ratio >> 16) & 0xff);
      stv0299_writereg(fe, 0x20, (ratio >> 8) & 0xff);
      stv0299_writereg(fe, 0x21, ratio & 0xf0);

      return 0;
}

static int alps_bsru6_tuner_set_params(struct dvb_frontend *fe, struct dvb_frontend_parameters *params)
{
      u8 buf[4];
      u32 div;
      struct i2c_msg msg = { .addr = 0x61, .flags = 0, .buf = buf, .len = sizeof(buf) };
      struct i2c_adapter *i2c = fe->tuner_priv;

      if ((params->frequency < 950000) || (params->frequency > 2150000))
            return -EINVAL;

      div = (params->frequency + (125 - 1)) / 125;    // round correctly
      buf[0] = (div >> 8) & 0x7f;
      buf[1] = div & 0xff;
      buf[2] = 0x80 | ((div & 0x18000) >> 10) | 4;
      buf[3] = 0xC4;

      if (params->frequency > 1530000)
            buf[3] = 0xc0;

      if (fe->ops.i2c_gate_ctrl)
            fe->ops.i2c_gate_ctrl(fe, 1);
      if (i2c_transfer(i2c, &msg, 1) != 1)
            return -EIO;
      return 0;
}

static struct stv0299_config alps_bsru6_config = {
      .demod_address = 0x68,
      .inittab = alps_bsru6_inittab,
      .mclk = 88000000UL,
      .invert = 1,
      .skip_reinit = 0,
      .lock_output = STV0229_LOCKOUTPUT_1,
      .volt13_op0_op1 = STV0299_VOLT13_OP1,
      .min_delay_ms = 100,
      .set_symbol_rate = alps_bsru6_set_symbol_rate,
};

#endif

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