drivers/media/dvb/dvb-usb/dtv5100-fe.c

   1 /*
   2  * DVB USB Linux driver for AME DTV-5100 USB2.0 DVB-T
   3  *
   4  * Copyright (C) 2008  Antoine Jacquet <royale@zerezo.com>
   5  * http://royale.zerezo.com/dtv5100/
   6  *
   7  * Inspired by dvb_dummy_fe.c
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  22  */
  23
  24 #include "dvb-usb.h"
  25 #include "qt1010_priv.h"
  26
  27 struct dtv5100_fe_state {
  28         struct dvb_frontend frontend;
  29 };
  30
  31 static int dtv5100_fe_read_status(struct dvb_frontend* fe, fe_status_t* status)
  32 {
  33         *status = FE_HAS_SIGNAL
  34                 | FE_HAS_CARRIER
  35                 | FE_HAS_VITERBI
  36                 | FE_HAS_SYNC
  37                 | FE_HAS_LOCK;
  38
  39         return 0;
  40 }
  41
  42 static int dtv5100_fe_read_ber(struct dvb_frontend* fe, u32* ber)
  43 {
  44         *ber = 0;
  45         return 0;
  46 }
  47
  48 static int dtv5100_fe_read_signal_strength(struct dvb_frontend* fe, u16* strength)
  49 {
  50         *strength = 0;
  51         return 0;
  52 }
  53
  54 static int dtv5100_fe_read_snr(struct dvb_frontend* fe, u16* snr)
  55 {
  56         *snr = 0;
  57         return 0;
  58 }
  59
  60 static int dtv5100_fe_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
  61 {
  62         *ucblocks = 0;
  63         return 0;
  64 }
  65
  66 static int dtv5100_fe_get_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *p)
  67 {
  68         return 0;
  69 }
  70
  71 static int dtv5100_fe_set_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *p)
  72 {
  73         if (fe->ops.tuner_ops.set_params) {
  74                 fe->ops.tuner_ops.set_params(fe, p);
  75                 if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0);
  76         }
  77
  78         return 0;
  79 }
  80
  81 static int dtv5100_fe_sleep(struct dvb_frontend* fe)
  82 {
  83         return 0;
  84 }
  85
  86 static int dtv5100_fe_init(struct dvb_frontend* fe)
  87 {
  88         return 0;
  89 }
  90
  91 static void dtv5100_fe_release(struct dvb_frontend* fe)
  92 {
  93         struct dtv5100_fe_state* state = fe->demodulator_priv;
  94         kfree(state);
  95 }
  96
  97 static struct dvb_frontend_ops dtv5100_fe_ops;
  98
  99 struct dvb_frontend* dtv5100_fe_attach(void)
 100 {
 101         struct dtv5100_fe_state* state = NULL;
 102
 103         /* allocate memory for the internal state */
 104         state = kmalloc(sizeof(struct dtv5100_fe_state), GFP_KERNEL);
 105         if (state == NULL) goto error;
 106
 107         /* create dvb_frontend */
 108         memcpy(&state->frontend.ops, &dtv5100_fe_ops, sizeof(struct dvb_frontend_ops));
 109         state->frontend.demodulator_priv = state;
 110         return &state->frontend;
 111
 112 error:
 113         kfree(state);
 114         return NULL;
 115 }
 116
 117 static struct dvb_frontend_ops dtv5100_fe_ops = {
 118
 119         .info = {
 120                 .name                   = "Dummy DVB-T",
 121                 .type                   = FE_OFDM,
 122                 .frequency_min          = QT1010_MIN_FREQ,
 123                 .frequency_max          = QT1010_MAX_FREQ,
 124                 .frequency_stepsize     = QT1010_STEP,
 125                 .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
 126                                 FE_CAN_FEC_4_5 | FE_CAN_FEC_5_6 | FE_CAN_FEC_6_7 |
 127                                 FE_CAN_FEC_7_8 | FE_CAN_FEC_8_9 | FE_CAN_FEC_AUTO |
 128                                 FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
 129                                 FE_CAN_TRANSMISSION_MODE_AUTO |
 130                                 FE_CAN_GUARD_INTERVAL_AUTO |
 131                                 FE_CAN_HIERARCHY_AUTO,
 132         },
 133
 134         .release = dtv5100_fe_release,
 135
 136         .init = dtv5100_fe_init,
 137         .sleep = dtv5100_fe_sleep,
 138
 139         .set_frontend = dtv5100_fe_set_frontend,
 140         .get_frontend = dtv5100_fe_get_frontend,
 141
 142         .read_status = dtv5100_fe_read_status,
 143         .read_ber = dtv5100_fe_read_ber,
 144         .read_signal_strength = dtv5100_fe_read_signal_strength,
 145         .read_snr = dtv5100_fe_read_snr,
 146         .read_ucblocks = dtv5100_fe_read_ucblocks,
 147 };