release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/media/dvb/frontends/stb6100_proc.h

   1 /*
   2         STB6100 Silicon Tuner wrapper
   3         Copyright (C)2009 Igor M. Liplianin (liplianin@me.by)
   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 stb6100_get_freq(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      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 (frontend_ops->i2c_gate_ctrl)
  33                         frontend_ops->i2c_gate_ctrl(fe, 1);
  34
  35                 err = tuner_ops->get_state(fe, DVBFE_TUNER_FREQUENCY, &state);
  36                 if (err < 0) {
  37                         printk(KERN_ERR "%s: Invalid parameter\n", __func__);
  38                         return err;
  39                 }
  40
  41                 if (frontend_ops->i2c_gate_ctrl)
  42                         frontend_ops->i2c_gate_ctrl(fe, 0);
  43
  44                 *frequency = state.frequency;
  45         }
  46
  47         return 0;
  48 }
  49
  50 static int stb6100_set_freq(struct dvb_frontend *fe, u32 frequency)
  51 {
  52         struct dvb_frontend_ops *frontend_ops = NULL;
  53         struct dvb_tuner_ops    *tuner_ops = NULL;
  54         struct tuner_state      state;
  55         int err = 0;
  56
  57         state.frequency = frequency;
  58         if (&fe->ops)
  59                 frontend_ops = &fe->ops;
  60         if (&frontend_ops->tuner_ops)
  61                 tuner_ops = &frontend_ops->tuner_ops;
  62         if (tuner_ops->set_state) {
  63                 if (frontend_ops->i2c_gate_ctrl)
  64                         frontend_ops->i2c_gate_ctrl(fe, 1);
  65
  66                 err = tuner_ops->set_state(fe, DVBFE_TUNER_FREQUENCY, &state);
  67                 if (err < 0) {
  68                         printk(KERN_ERR "%s: Invalid parameter\n", __func__);
  69                         return err;
  70                 }
  71
  72                 if (frontend_ops->i2c_gate_ctrl)
  73                         frontend_ops->i2c_gate_ctrl(fe, 0);
  74
  75         }
  76
  77         return 0;
  78 }
  79
  80 static int stb6100_get_bandw(struct dvb_frontend *fe, u32 *bandwidth)
  81 {
  82         struct dvb_frontend_ops *frontend_ops = NULL;
  83         struct dvb_tuner_ops    *tuner_ops = NULL;
  84         struct tuner_state      state;
  85         int err = 0;
  86
  87         if (&fe->ops)
  88                 frontend_ops = &fe->ops;
  89         if (&frontend_ops->tuner_ops)
  90                 tuner_ops = &frontend_ops->tuner_ops;
  91         if (tuner_ops->get_state) {
  92                 if (frontend_ops->i2c_gate_ctrl)
  93                         frontend_ops->i2c_gate_ctrl(fe, 1);
  94
  95                 err = tuner_ops->get_state(fe, DVBFE_TUNER_BANDWIDTH, &state);
  96                 if (err < 0) {
  97                         printk(KERN_ERR "%s: Invalid parameter\n", __func__);
  98                         return err;
  99                 }
 100
 101                 if (frontend_ops->i2c_gate_ctrl)
 102                         frontend_ops->i2c_gate_ctrl(fe, 0);
 103
 104                 *bandwidth = state.bandwidth;
 105         }
 106
 107         return 0;
 108 }
 109
 110 static int stb6100_set_bandw(struct dvb_frontend *fe, u32 bandwidth)
 111 {
 112         struct dvb_frontend_ops *frontend_ops = NULL;
 113         struct dvb_tuner_ops    *tuner_ops = NULL;
 114         struct tuner_state      state;
 115         int err = 0;
 116
 117         state.bandwidth = bandwidth;
 118         if (&fe->ops)
 119                 frontend_ops = &fe->ops;
 120         if (&frontend_ops->tuner_ops)
 121                 tuner_ops = &frontend_ops->tuner_ops;
 122         if (tuner_ops->set_state) {
 123                 if (frontend_ops->i2c_gate_ctrl)
 124                         frontend_ops->i2c_gate_ctrl(fe, 1);
 125
 126                 err = tuner_ops->set_state(fe, DVBFE_TUNER_BANDWIDTH, &state);
 127                 if (err < 0) {
 128                         printk(KERN_ERR "%s: Invalid parameter\n", __func__);
 129                         return err;
 130                 }
 131
 132                 if (frontend_ops->i2c_gate_ctrl)
 133                         frontend_ops->i2c_gate_ctrl(fe, 0);
 134
 135         }
 136
 137         return 0;
 138 }