drivers/media/dvb/frontends/lg_h06xf.h

   1 /*
   2  *  lg_h06xf.h - ATSC Tuner support for LG TDVS-H06xF
   3  *
   4  *  This program is free software; you can redistribute it and/or modify
   5  *  it under the terms of the GNU General Public License as published by
   6  *  the Free Software Foundation; either version 2 of the License, or
   7  *  (at your option) any later version.
   8  *
   9  *  This program is distributed in the hope that it will be useful,
  10  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *  GNU General Public License for more details.
  13  *
  14  *  You should have received a copy of the GNU General Public License
  15  *  along with this program; if not, write to the Free Software
  16  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17  */
  18
  19 #ifndef _LG_H06XF_H_
  20 #define _LG_H06XF_H_
  21 #include "dvb-pll.h"
  22
  23 static int lg_h06xf_pll_set(struct dvb_frontend* fe, struct i2c_adapter* i2c_adap,
  24                      struct dvb_frontend_parameters* params)
  25 {
  26         u8 buf[4];
  27         struct i2c_msg msg = { .addr = 0x61, .flags = 0,
  28                                .buf = buf, .len = sizeof(buf) };
  29         int err;
  30
  31         dvb_pll_configure(&dvb_pll_lg_tdvs_h06xf, buf, params->frequency, 0);
  32         if (fe->ops.i2c_gate_ctrl)
  33                 fe->ops.i2c_gate_ctrl(fe, 1);
  34         if ((err = i2c_transfer(i2c_adap, &msg, 1)) != 1) {
  35                 printk(KERN_WARNING "lg_h06xf: %s error "
  36                         "(addr %02x <- %02x, err = %i)\n",
  37                         __FUNCTION__, buf[0], buf[1], err);
  38                 if (err < 0)
  39                         return err;
  40                 else
  41                         return -EREMOTEIO;
  42         }
  43
  44         /* Set the Auxiliary Byte. */
  45         buf[0] = buf[2];
  46         buf[0] &= ~0x20;
  47         buf[0] |= 0x18;
  48         buf[1] = 0x50;
  49         msg.len = 2;
  50         if (fe->ops.i2c_gate_ctrl)
  51                 fe->ops.i2c_gate_ctrl(fe, 1);
  52         if ((err = i2c_transfer(i2c_adap, &msg, 1)) != 1) {
  53                 printk(KERN_WARNING "lg_h06xf: %s error "
  54                         "(addr %02x <- %02x, err = %i)\n",
  55                         __FUNCTION__, buf[0], buf[1], err);
  56                 if (err < 0)
  57                         return err;
  58                 else
  59                         return -EREMOTEIO;
  60         }
  61
  62         return 0;
  63 }
  64 #endif