release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/media/dvb/frontends/tda8261_cfg.h

   1 /*
   2         TDA8261 8PSK/QPSK tuner driver
   3         Copyright (C) Manu Abraham (abraham.manu@gmail.com)
   4
   5         This program is free software; you can redistribute it and/or modify
   6         it under the terms of the GNU General Public License as published by
   7         the Free Software Foundation; either version 2 of the License, or
   8         (at your option) any later version.
   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         You should have received a copy of the GNU General Public License
  16         along with this program; if not, write to the Free Software
  17         Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18 */
  19
  20 static int tda8261_get_frequency(struct dvb_frontend *fe, u32 *frequency)
  21 {
  22         struct dvb_frontend_ops *frontend_ops = NULL;
  23         struct dvb_tuner_ops    *tuner_ops = NULL;
  24         struct tuner_state      t_state;
  25         int err = 0;
  26
  27         if (&fe->ops)
  28                 frontend_ops = &fe->ops;
  29         if (&frontend_ops->tuner_ops)
  30                 tuner_ops = &frontend_ops->tuner_ops;
  31         if (tuner_ops->get_state) {
  32                 if ((err = tuner_ops->get_state(fe, DVBFE_TUNER_FREQUENCY, &t_state)) < 0) {
  33                         printk("%s: Invalid parameter\n", __func__);
  34                         return err;
  35                 }
  36                 *frequency = t_state.frequency;
  37                 printk("%s: Frequency=%d\n", __func__, t_state.frequency);
  38         }
  39         return 0;
  40 }
  41
  42 static int tda8261_set_frequency(struct dvb_frontend *fe, u32 frequency)
  43 {
  44         struct dvb_frontend_ops *frontend_ops = NULL;
  45         struct dvb_tuner_ops    *tuner_ops = NULL;
  46         struct tuner_state      t_state;
  47         int err = 0;
  48
  49         t_state.frequency = frequency;
  50         if (&fe->ops)
  51                 frontend_ops = &fe->ops;
  52         if (&frontend_ops->tuner_ops)
  53                 tuner_ops = &frontend_ops->tuner_ops;
  54         if (tuner_ops->set_state) {
  55                 if ((err = tuner_ops->set_state(fe, DVBFE_TUNER_FREQUENCY, &t_state)) < 0) {
  56                         printk("%s: Invalid parameter\n", __func__);
  57                         return err;
  58                 }
  59         }
  60         printk("%s: Frequency=%d\n", __func__, t_state.frequency);
  61         return 0;
  62 }
  63
  64 static int tda8261_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
  65 {
  66         struct dvb_frontend_ops *frontend_ops = &fe->ops;
  67         struct dvb_tuner_ops    *tuner_ops = &frontend_ops->tuner_ops;
  68         struct tuner_state      t_state;
  69         int err = 0;
  70
  71         if (&fe->ops)
  72                 frontend_ops = &fe->ops;
  73         if (&frontend_ops->tuner_ops)
  74                 tuner_ops = &frontend_ops->tuner_ops;
  75         if (tuner_ops->get_state) {
  76                 if ((err = tuner_ops->get_state(fe, DVBFE_TUNER_BANDWIDTH, &t_state)) < 0) {
  77                         printk("%s: Invalid parameter\n", __func__);
  78                         return err;
  79                 }
  80                 *bandwidth = t_state.bandwidth;
  81         }
  82         printk("%s: Bandwidth=%d\n", __func__, t_state.bandwidth);
  83         return 0;
  84 }