drivers/media/firewire/firedtv-fe.c

   1 /*
   2  * FireDTV driver (formerly known as FireSAT)
   3  *
   4  * Copyright (C) 2004 Andreas Monitzer <andy@monitzer.com>
   5  * Copyright (C) 2008 Henrik Kurelid <henrik@kurelid.se>
   6  *
   7  *      This program is free software; you can redistribute it and/or
   8  *      modify it under the terms of the GNU General Public License as
   9  *      published by the Free Software Foundation; either version 2 of
  10  *      the License, or (at your option) any later version.
  11  */
  12
  13 #include <linux/device.h>
  14 #include <linux/errno.h>
  15 #include <linux/kernel.h>
  16 #include <linux/string.h>
  17 #include <linux/types.h>
  18
  19 #include <media/dvb_frontend.h>
  20
  21 #include "firedtv.h"
  22
  23 static int fdtv_dvb_init(struct dvb_frontend *fe)
  24 {
  25         struct firedtv *fdtv = fe->sec_priv;
  26         int err;
  27
  28         /* FIXME - allocate free channel at IRM */
  29         fdtv->isochannel = fdtv->adapter.num;
  30
  31         err = cmp_establish_pp_connection(fdtv, fdtv->subunit,
  32                                           fdtv->isochannel);
  33         if (err) {
  34                 dev_err(fdtv->device,
  35                         "could not establish point to point connection\n");
  36                 return err;
  37         }
  38
  39         return fdtv_start_iso(fdtv);
  40 }
  41
  42 static int fdtv_sleep(struct dvb_frontend *fe)
  43 {
  44         struct firedtv *fdtv = fe->sec_priv;
  45
  46         fdtv_stop_iso(fdtv);
  47         cmp_break_pp_connection(fdtv, fdtv->subunit, fdtv->isochannel);
  48         fdtv->isochannel = -1;
  49         return 0;
  50 }
  51
  52 #define LNBCONTROL_DONTCARE 0xff
  53
  54 static int fdtv_diseqc_send_master_cmd(struct dvb_frontend *fe,
  55                                        struct dvb_diseqc_master_cmd *cmd)
  56 {
  57         struct firedtv *fdtv = fe->sec_priv;
  58
  59         return avc_lnb_control(fdtv, LNBCONTROL_DONTCARE, LNBCONTROL_DONTCARE,
  60                                LNBCONTROL_DONTCARE, 1, cmd);
  61 }
  62
  63 static int fdtv_diseqc_send_burst(struct dvb_frontend *fe,
  64                                   enum fe_sec_mini_cmd minicmd)
  65 {
  66         return 0;
  67 }
  68
  69 static int fdtv_set_tone(struct dvb_frontend *fe, enum fe_sec_tone_mode tone)
  70 {
  71         struct firedtv *fdtv = fe->sec_priv;
  72
  73         fdtv->tone = tone;
  74         return 0;
  75 }
  76
  77 static int fdtv_set_voltage(struct dvb_frontend *fe,
  78                             enum fe_sec_voltage voltage)
  79 {
  80         struct firedtv *fdtv = fe->sec_priv;
  81
  82         fdtv->voltage = voltage;
  83         return 0;
  84 }
  85
  86 static int fdtv_read_status(struct dvb_frontend *fe, enum fe_status *status)
  87 {
  88         struct firedtv *fdtv = fe->sec_priv;
  89         struct firedtv_tuner_status stat;
  90
  91         if (avc_tuner_status(fdtv, &stat))
  92                 return -EINVAL;
  93
  94         if (stat.no_rf)
  95                 *status = 0;
  96         else
  97                 *status = FE_HAS_SIGNAL | FE_HAS_VITERBI | FE_HAS_SYNC |
  98                           FE_HAS_CARRIER | FE_HAS_LOCK;
  99         return 0;
 100 }
 101
 102 static int fdtv_read_ber(struct dvb_frontend *fe, u32 *ber)
 103 {
 104         struct firedtv *fdtv = fe->sec_priv;
 105         struct firedtv_tuner_status stat;
 106
 107         if (avc_tuner_status(fdtv, &stat))
 108                 return -EINVAL;
 109
 110         *ber = stat.ber;
 111         return 0;
 112 }
 113
 114 static int fdtv_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
 115 {
 116         struct firedtv *fdtv = fe->sec_priv;
 117         struct firedtv_tuner_status stat;
 118
 119         if (avc_tuner_status(fdtv, &stat))
 120                 return -EINVAL;
 121
 122         *strength = stat.signal_strength << 8;
 123         return 0;
 124 }
 125
 126 static int fdtv_read_snr(struct dvb_frontend *fe, u16 *snr)
 127 {
 128         struct firedtv *fdtv = fe->sec_priv;
 129         struct firedtv_tuner_status stat;
 130
 131         if (avc_tuner_status(fdtv, &stat))
 132                 return -EINVAL;
 133
 134         /* C/N[dB] = -10 * log10(snr / 65535) */
 135         *snr = stat.carrier_noise_ratio * 257;
 136         return 0;
 137 }
 138
 139 static int fdtv_read_uncorrected_blocks(struct dvb_frontend *fe, u32 *ucblocks)
 140 {
 141         return -EOPNOTSUPP;
 142 }
 143
 144 static int fdtv_set_frontend(struct dvb_frontend *fe)
 145 {
 146         struct dtv_frontend_properties *p = &fe->dtv_property_cache;
 147         struct firedtv *fdtv = fe->sec_priv;
 148
 149         return avc_tuner_dsd(fdtv, p);
 150 }
 151
 152 void fdtv_frontend_init(struct firedtv *fdtv, const char *name)
 153 {
 154         struct dvb_frontend_ops *ops = &fdtv->fe.ops;
 155         struct dvb_frontend_info *fi = &ops->info;
 156
 157         ops->init                       = fdtv_dvb_init;
 158         ops->sleep                      = fdtv_sleep;
 159
 160         ops->set_frontend               = fdtv_set_frontend;
 161
 162         ops->read_status                = fdtv_read_status;
 163         ops->read_ber                   = fdtv_read_ber;
 164         ops->read_signal_strength       = fdtv_read_signal_strength;
 165         ops->read_snr                   = fdtv_read_snr;
 166         ops->read_ucblocks              = fdtv_read_uncorrected_blocks;
 167
 168         ops->diseqc_send_master_cmd     = fdtv_diseqc_send_master_cmd;
 169         ops->diseqc_send_burst          = fdtv_diseqc_send_burst;
 170         ops->set_tone                   = fdtv_set_tone;
 171         ops->set_voltage                = fdtv_set_voltage;
 172
 173         switch (fdtv->type) {
 174         case FIREDTV_DVB_S:
 175                 ops->delsys[0]          = SYS_DVBS;
 176
 177                 fi->frequency_min       = 950000;
 178                 fi->frequency_max       = 2150000;
 179                 fi->frequency_stepsize  = 125;
 180                 fi->symbol_rate_min     = 1000000;
 181                 fi->symbol_rate_max     = 40000000;
 182
 183                 fi->caps                = FE_CAN_INVERSION_AUTO |
 184                                           FE_CAN_FEC_1_2        |
 185                                           FE_CAN_FEC_2_3        |
 186                                           FE_CAN_FEC_3_4        |
 187                                           FE_CAN_FEC_5_6        |
 188                                           FE_CAN_FEC_7_8        |
 189                                           FE_CAN_FEC_AUTO       |
 190                                           FE_CAN_QPSK;
 191                 break;
 192
 193         case FIREDTV_DVB_S2:
 194                 ops->delsys[0]          = SYS_DVBS;
 195                 ops->delsys[1]          = SYS_DVBS2;
 196
 197                 fi->frequency_min       = 950000;
 198                 fi->frequency_max       = 2150000;
 199                 fi->frequency_stepsize  = 125;
 200                 fi->symbol_rate_min     = 1000000;
 201                 fi->symbol_rate_max     = 40000000;
 202
 203                 fi->caps                = FE_CAN_INVERSION_AUTO |
 204                                           FE_CAN_FEC_1_2        |
 205                                           FE_CAN_FEC_2_3        |
 206                                           FE_CAN_FEC_3_4        |
 207                                           FE_CAN_FEC_5_6        |
 208                                           FE_CAN_FEC_7_8        |
 209                                           FE_CAN_FEC_AUTO       |
 210                                           FE_CAN_QPSK           |
 211                                           FE_CAN_2G_MODULATION;
 212                 break;
 213
 214         case FIREDTV_DVB_C:
 215                 ops->delsys[0]          = SYS_DVBC_ANNEX_A;
 216
 217                 fi->frequency_min       = 47000000;
 218                 fi->frequency_max       = 866000000;
 219                 fi->frequency_stepsize  = 62500;
 220                 fi->symbol_rate_min     = 870000;
 221                 fi->symbol_rate_max     = 6900000;
 222
 223                 fi->caps                = FE_CAN_INVERSION_AUTO |
 224                                           FE_CAN_QAM_16         |
 225                                           FE_CAN_QAM_32         |
 226                                           FE_CAN_QAM_64         |
 227                                           FE_CAN_QAM_128        |
 228                                           FE_CAN_QAM_256        |
 229                                           FE_CAN_QAM_AUTO;
 230                 break;
 231
 232         case FIREDTV_DVB_T:
 233                 ops->delsys[0]          = SYS_DVBT;
 234
 235                 fi->frequency_min       = 49000000;
 236                 fi->frequency_max       = 861000000;
 237                 fi->frequency_stepsize  = 62500;
 238
 239                 fi->caps                = FE_CAN_INVERSION_AUTO         |
 240                                           FE_CAN_FEC_2_3                |
 241                                           FE_CAN_TRANSMISSION_MODE_AUTO |
 242                                           FE_CAN_GUARD_INTERVAL_AUTO    |
 243                                           FE_CAN_HIERARCHY_AUTO;
 244                 break;
 245
 246         default:
 247                 dev_err(fdtv->device, "no frontend for model type %d\n",
 248                         fdtv->type);
 249         }
 250         strcpy(fi->name, name);
 251
 252         fdtv->fe.dvb = &fdtv->adapter;
 253         fdtv->fe.sec_priv = fdtv;
 254 }