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 #include <linux/dvb/frontend.h>
  21 #include <media/dvb_frontend.h>
  22
  23 static int stb6100_get_freq(struct dvb_frontend *fe, u32 *frequency)
  24 {
  25         struct dvb_frontend_ops *frontend_ops = &fe->ops;
  26         struct dvb_tuner_ops    *tuner_ops = &frontend_ops->tuner_ops;
  27         int err = 0;
  28
  29         if (tuner_ops->get_frequency) {
  30                 if (frontend_ops->i2c_gate_ctrl)
  31                         frontend_ops->i2c_gate_ctrl(fe, 1);
  32
  33                 err = tuner_ops->get_frequency(fe, frequency);
  34                 if (err < 0) {
  35                         printk("%s: Invalid parameter\n", __func__);
  36                         return err;
  37                 }
  38
  39                 if (frontend_ops->i2c_gate_ctrl)
  40                         frontend_ops->i2c_gate_ctrl(fe, 0);
  41         }
  42
  43         return 0;
  44 }
  45
  46 static int stb6100_set_freq(struct dvb_frontend *fe, u32 frequency)
  47 {
  48         struct dvb_frontend_ops *frontend_ops = &fe->ops;
  49         struct dvb_tuner_ops    *tuner_ops = &frontend_ops->tuner_ops;
  50         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
  51         u32 bw = c->bandwidth_hz;
  52         int err = 0;
  53
  54         c->frequency = frequency;
  55         c->bandwidth_hz = 0;            /* Don't adjust the bandwidth */
  56
  57         if (tuner_ops->set_params) {
  58                 if (frontend_ops->i2c_gate_ctrl)
  59                         frontend_ops->i2c_gate_ctrl(fe, 1);
  60
  61                 err = tuner_ops->set_params(fe);
  62                 c->bandwidth_hz = bw;
  63                 if (err < 0) {
  64                         printk("%s: Invalid parameter\n", __func__);
  65                         return err;
  66                 }
  67
  68                 if (frontend_ops->i2c_gate_ctrl)
  69                         frontend_ops->i2c_gate_ctrl(fe, 0);
  70
  71         }
  72
  73         return 0;
  74 }
  75
  76 static int stb6100_get_bandw(struct dvb_frontend *fe, u32 *bandwidth)
  77 {
  78         struct dvb_frontend_ops *frontend_ops = &fe->ops;
  79         struct dvb_tuner_ops    *tuner_ops = &frontend_ops->tuner_ops;
  80         int err = 0;
  81
  82         if (tuner_ops->get_bandwidth) {
  83                 if (frontend_ops->i2c_gate_ctrl)
  84                         frontend_ops->i2c_gate_ctrl(fe, 1);
  85
  86                 err = tuner_ops->get_bandwidth(fe, bandwidth);
  87                 if (err < 0) {
  88                         printk(KERN_ERR "%s: Invalid parameter\n", __func__);
  89                         return err;
  90                 }
  91
  92                 if (frontend_ops->i2c_gate_ctrl)
  93                         frontend_ops->i2c_gate_ctrl(fe, 0);
  94         }
  95
  96         return 0;
  97 }
  98
  99 static int stb6100_set_bandw(struct dvb_frontend *fe, u32 bandwidth)
 100 {
 101         struct dvb_frontend_ops *frontend_ops = &fe->ops;
 102         struct dvb_tuner_ops    *tuner_ops = &frontend_ops->tuner_ops;
 103         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 104         u32 freq = c->frequency;
 105         int err = 0;
 106
 107         c->bandwidth_hz = bandwidth;
 108         c->frequency = 0;               /* Don't adjust the frequency */
 109
 110         if (tuner_ops->set_params) {
 111                 if (frontend_ops->i2c_gate_ctrl)
 112                         frontend_ops->i2c_gate_ctrl(fe, 1);
 113
 114                 err = tuner_ops->set_params(fe);
 115                 c->frequency = freq;
 116                 if (err < 0) {
 117                         printk(KERN_ERR "%s: Invalid parameter\n", __func__);
 118                         return err;
 119                 }
 120
 121                 if (frontend_ops->i2c_gate_ctrl)
 122                         frontend_ops->i2c_gate_ctrl(fe, 0);
 123
 124         }
 125
 126         return 0;
 127 }