drivers/media/dvb/siano/smsdvb.c

   1 /*
   2  *  Driver for the Siano SMS10xx USB dongle
   3  *
   4  *  author: Anatoly Greenblat
   5  *
   6  *  Copyright (c), 2005-2008 Siano Mobile Silicon, Inc.
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License version 3 as
  10  *  published by the Free Software Foundation;
  11  *
  12  *  Software distributed under the License is distributed on an "AS IS"
  13  *  basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.
  14  *
  15  *  See the 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 #include <linux/module.h>
  23 #include <linux/init.h>
  24
  25 #include "smscoreapi.h"
  26
  27 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  28
  29 struct list_head g_smsdvb_clients;
  30 kmutex_t g_smsdvb_clientslock;
  31
  32 int smsdvb_onresponse(void *context, smscore_buffer_t *cb)
  33 {
  34         smsdvb_client_t *client = (smsdvb_client_t *) context;
  35         SmsMsgHdr_ST *phdr = (SmsMsgHdr_ST *)(((u8 *) cb->p) + cb->offset);
  36
  37         switch(phdr->msgType) {
  38         case MSG_SMS_DVBT_BDA_DATA:
  39                 dvb_dmx_swfilter(&client->demux, (u8 *)(phdr + 1),
  40                                  cb->size - sizeof(SmsMsgHdr_ST));
  41                 break;
  42
  43         case MSG_SMS_RF_TUNE_RES:
  44                 complete(&client->tune_done);
  45                 break;
  46
  47         case MSG_SMS_GET_STATISTICS_RES:
  48         {
  49                 SmsMsgStatisticsInfo_ST *p =
  50                         (SmsMsgStatisticsInfo_ST *)(phdr + 1);
  51
  52                 if (p->Stat.IsDemodLocked)
  53                 {
  54                         client->fe_status = FE_HAS_SIGNAL |
  55                                             FE_HAS_CARRIER |
  56                                             FE_HAS_VITERBI |
  57                                             FE_HAS_SYNC |
  58                                             FE_HAS_LOCK;
  59
  60                         client->fe_snr = p->Stat.SNR;
  61                         client->fe_ber = p->Stat.BER;
  62
  63                         if (p->Stat.InBandPwr < -95)
  64                                 client->fe_signal_strength = 0;
  65                         else if (p->Stat.InBandPwr > -29)
  66                                 client->fe_signal_strength = 100;
  67                         else
  68                                 client->fe_signal_strength =
  69                                         (p->Stat.InBandPwr + 95) * 3 / 2;
  70                 } else {
  71                         client->fe_status = 0;
  72                         client->fe_snr =
  73                         client->fe_ber =
  74                         client->fe_signal_strength = 0;
  75                 }
  76
  77                 complete(&client->stat_done);
  78                 break;
  79         } }
  80
  81         smscore_putbuffer(client->coredev, cb);
  82
  83         return 0;
  84 }
  85
  86 void smsdvb_unregister_client(smsdvb_client_t *client)
  87 {
  88         // must be called under clientslock
  89
  90         list_del(&client->entry);
  91
  92         smscore_unregister_client(client->smsclient);
  93         dvb_unregister_frontend(&client->frontend);
  94         dvb_dmxdev_release(&client->dmxdev);
  95         dvb_dmx_release(&client->demux);
  96         dvb_unregister_adapter(&client->adapter);
  97         kfree(client);
  98 }
  99
 100 void smsdvb_onremove(void *context)
 101 {
 102         kmutex_lock(&g_smsdvb_clientslock);
 103
 104         smsdvb_unregister_client((smsdvb_client_t *) context);
 105
 106         kmutex_unlock(&g_smsdvb_clientslock);
 107 }
 108
 109 static int smsdvb_start_feed(struct dvb_demux_feed *feed)
 110 {
 111         smsdvb_client_t *client =
 112                 container_of(feed->demux, smsdvb_client_t, demux);
 113         SmsMsgData_ST PidMsg;
 114
 115         printk("%s add pid %d(%x)\n", __func__, feed->pid, feed->pid);
 116
 117         PidMsg.xMsgHeader.msgSrcId = DVBT_BDA_CONTROL_MSG_ID;
 118         PidMsg.xMsgHeader.msgDstId = HIF_TASK;
 119         PidMsg.xMsgHeader.msgFlags = 0;
 120         PidMsg.xMsgHeader.msgType  = MSG_SMS_ADD_PID_FILTER_REQ;
 121         PidMsg.xMsgHeader.msgLength = sizeof(PidMsg);
 122         PidMsg.msgData[0] = feed->pid;
 123
 124         return smsclient_sendrequest(client->smsclient,
 125                                      &PidMsg, sizeof(PidMsg));
 126 }
 127
 128 static int smsdvb_stop_feed(struct dvb_demux_feed *feed)
 129 {
 130         smsdvb_client_t *client =
 131                 container_of(feed->demux, smsdvb_client_t, demux);
 132         SmsMsgData_ST PidMsg;
 133
 134         printk("%s remove pid %d(%x)\n", __func__, feed->pid, feed->pid);
 135
 136         PidMsg.xMsgHeader.msgSrcId = DVBT_BDA_CONTROL_MSG_ID;
 137         PidMsg.xMsgHeader.msgDstId = HIF_TASK;
 138         PidMsg.xMsgHeader.msgFlags = 0;
 139         PidMsg.xMsgHeader.msgType  = MSG_SMS_REMOVE_PID_FILTER_REQ;
 140         PidMsg.xMsgHeader.msgLength = sizeof(PidMsg);
 141         PidMsg.msgData[0] = feed->pid;
 142
 143         return smsclient_sendrequest(client->smsclient,
 144                                      &PidMsg, sizeof(PidMsg));
 145 }
 146
 147 static int smsdvb_sendrequest_and_wait(smsdvb_client_t *client,
 148                                         void *buffer, size_t size,
 149                                         struct completion *completion)
 150 {
 151         int rc = smsclient_sendrequest(client->smsclient, buffer, size);
 152         if (rc < 0)
 153                 return rc;
 154
 155         return wait_for_completion_timeout(completion,
 156                                            msecs_to_jiffies(2000)) ?
 157                                                 0 : -ETIME;
 158 }
 159
 160 static int smsdvb_send_statistics_request(smsdvb_client_t *client)
 161 {
 162         SmsMsgHdr_ST Msg = { MSG_SMS_GET_STATISTICS_REQ,
 163                              DVBT_BDA_CONTROL_MSG_ID,
 164                              HIF_TASK, sizeof(SmsMsgHdr_ST), 0 };
 165         return smsdvb_sendrequest_and_wait(client, &Msg, sizeof(Msg),
 166                                            &client->stat_done);
 167 }
 168
 169 static int smsdvb_read_status(struct dvb_frontend *fe, fe_status_t *stat)
 170 {
 171         smsdvb_client_t *client = container_of(fe, smsdvb_client_t, frontend);
 172         int rc = smsdvb_send_statistics_request(client);
 173
 174         if (!rc)
 175                 *stat = client->fe_status;
 176
 177         return rc;
 178 }
 179
 180 static int smsdvb_read_ber(struct dvb_frontend *fe, u32 *ber)
 181 {
 182         smsdvb_client_t *client = container_of(fe, smsdvb_client_t, frontend);
 183         int rc = smsdvb_send_statistics_request(client);
 184
 185         if (!rc)
 186                 *ber = client->fe_ber;
 187
 188         return rc;
 189 }
 190
 191 static int smsdvb_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
 192 {
 193         smsdvb_client_t *client = container_of(fe, smsdvb_client_t, frontend);
 194         int rc = smsdvb_send_statistics_request(client);
 195
 196         if (!rc)
 197                 *strength = client->fe_signal_strength;
 198
 199         return rc;
 200 }
 201
 202 static int smsdvb_read_snr(struct dvb_frontend *fe, u16 *snr)
 203 {
 204         smsdvb_client_t *client = container_of(fe, smsdvb_client_t, frontend);
 205         int rc = smsdvb_send_statistics_request(client);
 206
 207         if (!rc)
 208                 *snr = client->fe_snr;
 209
 210         return rc;
 211 }
 212
 213 static int smsdvb_get_tune_settings(struct dvb_frontend *fe,
 214                                     struct dvb_frontend_tune_settings *tune)
 215 {
 216         printk("%s\n", __func__);
 217
 218         tune->min_delay_ms = 400;
 219         tune->step_size = 250000;
 220         tune->max_drift = 0;
 221         return 0;
 222 }
 223
 224 static int smsdvb_set_frontend(struct dvb_frontend *fe,
 225                                struct dvb_frontend_parameters *fep)
 226 {
 227         smsdvb_client_t *client = container_of(fe, smsdvb_client_t, frontend);
 228
 229         struct
 230         {
 231                 SmsMsgHdr_ST    Msg;
 232                 u32             Data[3];
 233         } Msg;
 234
 235         Msg.Msg.msgSrcId  = DVBT_BDA_CONTROL_MSG_ID;
 236         Msg.Msg.msgDstId  = HIF_TASK;
 237         Msg.Msg.msgFlags  = 0;
 238         Msg.Msg.msgType   = MSG_SMS_RF_TUNE_REQ;
 239         Msg.Msg.msgLength = sizeof(Msg);
 240         Msg.Data[0] = fep->frequency;
 241         Msg.Data[2] = 12000000;
 242
 243         printk("%s freq %d band %d\n", __func__,
 244                fep->frequency, fep->u.ofdm.bandwidth);
 245
 246         switch(fep->u.ofdm.bandwidth)
 247         {
 248                 case BANDWIDTH_8_MHZ: Msg.Data[1] = BW_8_MHZ; break;
 249                 case BANDWIDTH_7_MHZ: Msg.Data[1] = BW_7_MHZ; break;
 250                 case BANDWIDTH_6_MHZ: Msg.Data[1] = BW_6_MHZ; break;
 251                 case BANDWIDTH_AUTO: return -EOPNOTSUPP;
 252                 default: return -EINVAL;
 253         }
 254
 255         return smsdvb_sendrequest_and_wait(client, &Msg, sizeof(Msg),
 256                                            &client->tune_done);
 257 }
 258
 259 static int smsdvb_get_frontend(struct dvb_frontend *fe,
 260                                struct dvb_frontend_parameters *fep)
 261 {
 262         smsdvb_client_t *client = container_of(fe, smsdvb_client_t, frontend);
 263
 264         printk("%s\n", __func__);
 265
 266         // todo:
 267         memcpy(fep, &client->fe_params,
 268                sizeof(struct dvb_frontend_parameters));
 269         return 0;
 270 }
 271
 272 static void smsdvb_release(struct dvb_frontend *fe)
 273 {
 274         // do nothing
 275 }
 276
 277 static struct dvb_frontend_ops smsdvb_fe_ops = {
 278         .info = {
 279                 .name                   = "Siano Mobile Digital SMS10xx",
 280                 .type                   = FE_OFDM,
 281                 .frequency_min          = 44250000,
 282                 .frequency_max          = 867250000,
 283                 .frequency_stepsize     = 250000,
 284                 .caps = FE_CAN_INVERSION_AUTO |
 285                         FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
 286                         FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
 287                         FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 |
 288                         FE_CAN_QAM_AUTO | FE_CAN_TRANSMISSION_MODE_AUTO |
 289                         FE_CAN_GUARD_INTERVAL_AUTO |
 290                         FE_CAN_RECOVER |
 291                         FE_CAN_HIERARCHY_AUTO,
 292         },
 293
 294         .release = smsdvb_release,
 295
 296         .set_frontend = smsdvb_set_frontend,
 297         .get_frontend = smsdvb_get_frontend,
 298         .get_tune_settings = smsdvb_get_tune_settings,
 299
 300         .read_status = smsdvb_read_status,
 301         .read_ber = smsdvb_read_ber,
 302         .read_signal_strength = smsdvb_read_signal_strength,
 303         .read_snr = smsdvb_read_snr,
 304 };
 305
 306 int smsdvb_hotplug(smscore_device_t *coredev,
 307                    struct device *device, int arrival)
 308 {
 309         smsclient_params_t params;
 310         smsdvb_client_t *client;
 311         int rc;
 312
 313         // device removal handled by onremove callback
 314         if (!arrival)
 315                 return 0;
 316
 317         if (smscore_get_device_mode(coredev) != 4) {
 318                 printk(KERN_ERR "%sSMS Device mode is not set for DVB operation.\n", __func__);
 319                 return 0;
 320         }
 321
 322         client = kzalloc(sizeof(smsdvb_client_t), GFP_KERNEL);
 323         if (!client) {
 324                 printk(KERN_INFO "%s kmalloc() failed\n", __func__);
 325                 return -ENOMEM;
 326         }
 327
 328         // register dvb adapter
 329         rc = dvb_register_adapter(&client->adapter, "Siano Digital Receiver",
 330                                   THIS_MODULE, device, adapter_nr);
 331         if (rc < 0) {
 332                 printk("%s dvb_register_adapter() failed %d\n", __func__, rc);
 333                 goto adapter_error;
 334         }
 335
 336         // init dvb demux
 337         client->demux.dmx.capabilities = DMX_TS_FILTERING;
 338         client->demux.filternum = 32; // todo: nova ???
 339         client->demux.feednum = 32;
 340         client->demux.start_feed = smsdvb_start_feed;
 341         client->demux.stop_feed = smsdvb_stop_feed;
 342
 343         rc = dvb_dmx_init(&client->demux);
 344         if (rc < 0) {
 345                 printk("%s dvb_dmx_init failed %d\n\n", __func__, rc);
 346                 goto dvbdmx_error;
 347         }
 348
 349         // init dmxdev
 350         client->dmxdev.filternum = 32;
 351         client->dmxdev.demux = &client->demux.dmx;
 352         client->dmxdev.capabilities = 0;
 353
 354         rc = dvb_dmxdev_init(&client->dmxdev, &client->adapter);
 355         if (rc < 0) {
 356                 printk("%s dvb_dmxdev_init failed %d\n", __func__, rc);
 357                 goto dmxdev_error;
 358         }
 359
 360         // init and register frontend
 361         memcpy(&client->frontend.ops, &smsdvb_fe_ops,
 362                sizeof(struct dvb_frontend_ops));
 363
 364         rc = dvb_register_frontend(&client->adapter, &client->frontend);
 365         if (rc < 0) {
 366                 printk("%s frontend registration failed %d\n", __func__, rc);
 367                 goto frontend_error;
 368         }
 369
 370         params.initial_id = 1;
 371         params.data_type = MSG_SMS_DVBT_BDA_DATA;
 372         params.onresponse_handler = smsdvb_onresponse;
 373         params.onremove_handler = smsdvb_onremove;
 374         params.context = client;
 375
 376         rc = smscore_register_client(coredev, &params, &client->smsclient);
 377         if (rc < 0) {
 378                 printk(KERN_INFO "%s smscore_register_client() failed %d\n",
 379                        __func__, rc);
 380                 goto client_error;
 381         }
 382
 383         client->coredev = coredev;
 384
 385         init_completion(&client->tune_done);
 386         init_completion(&client->stat_done);
 387
 388         kmutex_lock(&g_smsdvb_clientslock);
 389
 390         list_add(&client->entry, &g_smsdvb_clients);
 391
 392         kmutex_unlock(&g_smsdvb_clientslock);
 393
 394         printk(KERN_INFO "%s success\n", __func__);
 395
 396         return 0;
 397
 398 client_error:
 399         dvb_unregister_frontend(&client->frontend);
 400
 401 frontend_error:
 402         dvb_dmxdev_release(&client->dmxdev);
 403
 404 dmxdev_error:
 405         dvb_dmx_release(&client->demux);
 406
 407 dvbdmx_error:
 408         dvb_unregister_adapter(&client->adapter);
 409
 410 adapter_error:
 411         kfree(client);
 412         return rc;
 413 }
 414
 415 int smsdvb_register(void)
 416 {
 417         int rc;
 418
 419         INIT_LIST_HEAD(&g_smsdvb_clients);
 420         kmutex_init(&g_smsdvb_clientslock);
 421
 422         rc = smscore_register_hotplug(smsdvb_hotplug);
 423
 424         printk(KERN_INFO "%s\n", __func__);
 425
 426         return rc;
 427 }
 428
 429 void smsdvb_unregister(void)
 430 {
 431         smscore_unregister_hotplug(smsdvb_hotplug);
 432
 433         kmutex_lock(&g_smsdvb_clientslock);
 434
 435         while (!list_empty(&g_smsdvb_clients))
 436                smsdvb_unregister_client(
 437                         (smsdvb_client_t *) g_smsdvb_clients.next);
 438
 439         kmutex_unlock(&g_smsdvb_clientslock);
 440 }