release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/media/dvb/frontends/stb6100_cfg.h

   1 /*
   2         STB6100 Silicon Tuner
   3         Copyright (C) Manu Abraham (abraham.manu@gmail.com)
   4
   5         Copyright (C) ST Microelectronics
   6
   7         This program is free software; you can redistribute it and/or modify
   8         it under the terms of the GNU General Public License as published by
   9         the Free Software Foundation; either version 2 of the License, or
  10         (at your option) any later version.
  11
  12         This program is distributed in the hope that it will be useful,
  13         but WITHOUT ANY WARRANTY; without even the implied warranty of
  14         MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15         GNU General Public License for more details.
  16
  17         You should have received a copy of the GNU General Public License
  18         along with this program; if not, write to the Free Software
  19         Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20 */
  21
  22 static int stb6100_get_frequency(struct dvb_frontend *fe, u32 *frequency)
  23 {
  24         struct dvb_frontend_ops *frontend_ops = NULL;
  25         struct dvb_tuner_ops    *tuner_ops = NULL;
  26         struct tuner_state      t_state;
  27         int err = 0;
  28
  29         if (&fe->ops)
  30                 frontend_ops = &fe->ops;
  31         if (&frontend_ops->tuner_ops)
  32                 tuner_ops = &frontend_ops->tuner_ops;
  33         if (tuner_ops->get_state) {
  34                 if ((err = tuner_ops->get_state(fe, DVBFE_TUNER_FREQUENCY, &t_state)) < 0) {
  35                         printk("%s: Invalid parameter\n", __func__);
  36                         return err;
  37                 }
  38                 *frequency = t_state.frequency;
  39         }
  40         return 0;
  41 }
  42
  43 static int stb6100_set_frequency(struct dvb_frontend *fe, u32 frequency)
  44 {
  45         struct dvb_frontend_ops *frontend_ops = NULL;
  46         struct dvb_tuner_ops    *tuner_ops = NULL;
  47         struct tuner_state      t_state;
  48         int err = 0;
  49
  50         t_state.frequency = frequency;
  51         if (&fe->ops)
  52                 frontend_ops = &fe->ops;
  53         if (&frontend_ops->tuner_ops)
  54                 tuner_ops = &frontend_ops->tuner_ops;
  55         if (tuner_ops->set_state) {
  56                 if ((err = tuner_ops->set_state(fe, DVBFE_TUNER_FREQUENCY, &t_state)) < 0) {
  57                         printk("%s: Invalid parameter\n", __func__);
  58                         return err;
  59                 }
  60         }
  61         return 0;
  62 }
  63
  64 static int stb6100_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         return 0;
  83 }
  84
  85 static int stb6100_set_bandwidth(struct dvb_frontend *fe, u32 bandwidth)
  86 {
  87         struct dvb_frontend_ops *frontend_ops = NULL;
  88         struct dvb_tuner_ops    *tuner_ops = NULL;
  89         struct tuner_state      t_state;
  90         int err = 0;
  91
  92         t_state.bandwidth = bandwidth;
  93         if (&fe->ops)
  94                 frontend_ops = &fe->ops;
  95         if (&frontend_ops->tuner_ops)
  96                 tuner_ops = &frontend_ops->tuner_ops;
  97         if (tuner_ops->set_state) {
  98                 if ((err = tuner_ops->set_state(fe, DVBFE_TUNER_BANDWIDTH, &t_state)) < 0) {
  99                         printk("%s: Invalid parameter\n", __func__);
 100                         return err;
 101                 }
 102         }
 103         return 0;
 104 }