LXR linux/drivers/media/dvb-frontends/tda8261

   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
  20static int tda8261_get_frequency(struct dvb_frontend *fe, u32 *frequency)
  21{
  22        struct dvb_frontend_ops *frontend_ops = &fe->ops;
  23        struct dvb_tuner_ops    *tuner_ops = &frontend_ops->tuner_ops;
  24        struct tuner_state      t_state;
  25        int err = 0;
  26
  27        if (tuner_ops->get_state) {
  28                err = tuner_ops->get_state(fe, DVBFE_TUNER_FREQUENCY, &t_state);
  29                if (err < 0) {
  30                        printk("%s: Invalid parameter\n", __func__);
  31                        return err;
  32                }
  33                *frequency = t_state.frequency;
  34                printk("%s: Frequency=%d\n", __func__, t_state.frequency);
  35        }
  36        return 0;
  37}
  38
  39static int tda8261_set_frequency(struct dvb_frontend *fe, u32 frequency)
  40{
  41        struct dvb_frontend_ops *frontend_ops = &fe->ops;
  42        struct dvb_tuner_ops    *tuner_ops = &frontend_ops->tuner_ops;
  43        struct tuner_state      t_state;
  44        int err = 0;
  45
  46        t_state.frequency = frequency;
  47
  48        if (tuner_ops->set_state) {
  49                err = tuner_ops->set_state(fe, DVBFE_TUNER_FREQUENCY, &t_state);
  50                if (err < 0) {
  51                        printk("%s: Invalid parameter\n", __func__);
  52                        return err;
  53                }
  54        }
  55        printk("%s: Frequency=%d\n", __func__, t_state.frequency);
  56        return 0;
  57}
  58
  59static int tda8261_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
  60{
  61        struct dvb_frontend_ops *frontend_ops = &fe->ops;
  62        struct dvb_tuner_ops    *tuner_ops = &frontend_ops->tuner_ops;
  63        struct tuner_state      t_state;
  64        int err = 0;
  65
  66        if (tuner_ops->get_state) {
  67                err = tuner_ops->get_state(fe, DVBFE_TUNER_BANDWIDTH, &t_state);
  68                if (err < 0) {
  69                        printk("%s: Invalid parameter\n", __func__);
  70                        return err;
  71                }
  72                *bandwidth = t_state.bandwidth;
  73                printk("%s: Bandwidth=%d\n", __func__, t_state.bandwidth);
  74        }
  75        return 0;
  76}
  77