drivers/media/dvb/frontends/bsbe1.h

   1 /*
   2  * bsbe1.h - ALPS BSBE1 tuner support (moved from av7110.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 BSBE1_H
  26 #define BSBE1_H
  27
  28 static u8 alps_bsbe1_inittab[] = {
  29         0x01, 0x15,
  30         0x02, 0x30,
  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, 0x92,
  67         0xff, 0xff
  68 };
  69
  70
  71 static int alps_bsbe1_set_symbol_rate(struct dvb_frontend* fe, u32 srate, u32 ratio)
  72 {
  73         u8 aclk = 0;
  74         u8 bclk = 0;
  75
  76         if (srate < 1500000) { aclk = 0xb7; bclk = 0x47; }
  77         else if (srate < 3000000) { aclk = 0xb7; bclk = 0x4b; }
  78         else if (srate < 7000000) { aclk = 0xb7; bclk = 0x4f; }
  79         else if (srate < 14000000) { aclk = 0xb7; bclk = 0x53; }
  80         else if (srate < 30000000) { aclk = 0xb6; bclk = 0x53; }
  81         else if (srate < 45000000) { aclk = 0xb4; bclk = 0x51; }
  82
  83         stv0299_writereg(fe, 0x13, aclk);
  84         stv0299_writereg(fe, 0x14, bclk);
  85         stv0299_writereg(fe, 0x1f, (ratio >> 16) & 0xff);
  86         stv0299_writereg(fe, 0x20, (ratio >>  8) & 0xff);
  87         stv0299_writereg(fe, 0x21, (ratio      ) & 0xf0);
  88
  89         return 0;
  90 }
  91
  92 static int alps_bsbe1_tuner_set_params(struct dvb_frontend* fe, struct dvb_frontend_parameters *params)
  93 {
  94         int ret;
  95         u8 data[4];
  96         u32 div;
  97         struct i2c_msg msg = { .addr = 0x61, .flags = 0, .buf = data, .len = sizeof(data) };
  98         struct i2c_adapter *i2c = fe->tuner_priv;
  99
 100         if ((params->frequency < 950000) || (params->frequency > 2150000))
 101                 return -EINVAL;
 102
 103         div = (params->frequency + (125 - 1)) / 125; // round correctly
 104         data[0] = (div >> 8) & 0x7f;
 105         data[1] = div & 0xff;
 106         data[2] = 0x80 | ((div & 0x18000) >> 10) | 4;
 107         data[3] = (params->frequency > 1530000) ? 0xE0 : 0xE4;
 108
 109         if (fe->ops.i2c_gate_ctrl)
 110                 fe->ops.i2c_gate_ctrl(fe, 1);
 111         ret = i2c_transfer(i2c, &msg, 1);
 112         return (ret != 1) ? -EIO : 0;
 113 }
 114
 115 static struct stv0299_config alps_bsbe1_config = {
 116         .demod_address = 0x68,
 117         .inittab = alps_bsbe1_inittab,
 118         .mclk = 88000000UL,
 119         .invert = 1,
 120         .skip_reinit = 0,
 121         .min_delay_ms = 100,
 122         .set_symbol_rate = alps_bsbe1_set_symbol_rate,
 123 };
 124
 125 #endif