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         {
  39                 case MSG_SMS_DVBT_BDA_DATA:
  40                         dvb_dmx_swfilter(&client->demux, (u8*)(phdr + 1), 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 = (SmsMsgStatisticsInfo_ST*)(phdr + 1);
  50
  51                         if (p->Stat.IsDemodLocked)
  52                         {
  53                                 client->fe_status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK;
  54                                 client->fe_snr = p->Stat.SNR;
  55                                 client->fe_ber = p->Stat.BER;
  56
  57                                 if (p->Stat.InBandPwr < -95)
  58                                         client->fe_signal_strength = 0;
  59                                 else if (p->Stat.InBandPwr > -29)
  60                                         client->fe_signal_strength = 100;
  61                                 else
  62                                         client->fe_signal_strength = (p->Stat.InBandPwr + 95) * 3 / 2;
  63                         }
  64                         else
  65                         {
  66                                 client->fe_status = 0;
  67                                 client->fe_snr =
  68                                 client->fe_ber =
  69                                 client->fe_signal_strength = 0;
  70                         }
  71
  72                         complete(&client->stat_done);
  73                         break;
  74                 }
  75         }
  76
  77         smscore_putbuffer(client->coredev, cb);
  78
  79         return 0;
  80 }
  81
  82 void smsdvb_unregister_client(smsdvb_client_t* client)
  83 {
  84         // must be called under clientslock
  85
  86         list_del(&client->entry);
  87
  88         smscore_unregister_client(client->smsclient);
  89         dvb_unregister_frontend(&client->frontend);
  90         dvb_dmxdev_release(&client->dmxdev);
  91         dvb_dmx_release(&client->demux);
  92         dvb_unregister_adapter(&client->adapter);
  93         kfree(client);
  94 }
  95
  96 void smsdvb_onremove(void *context)
  97 {
  98         kmutex_lock(&g_smsdvb_clientslock);
  99
 100         smsdvb_unregister_client((smsdvb_client_t*) context);
 101
 102         kmutex_unlock(&g_smsdvb_clientslock);
 103 }
 104
 105 static int smsdvb_start_feed(struct dvb_demux_feed *feed)
 106 {
 107         smsdvb_client_t *client = container_of(feed->demux, smsdvb_client_t, demux);
 108         SmsMsgData_ST PidMsg;
 109
 110         printk("%s add pid %d(%x)\n", __func__, feed->pid, feed->pid);
 111
 112         PidMsg.xMsgHeader.msgSrcId = DVBT_BDA_CONTROL_MSG_ID;
 113         PidMsg.xMsgHeader.msgDstId = HIF_TASK;
 114         PidMsg.xMsgHeader.msgFlags = 0;
 115         PidMsg.xMsgHeader.msgType  = MSG_SMS_ADD_PID_FILTER_REQ;
 116         PidMsg.xMsgHeader.msgLength = sizeof(PidMsg);
 117         PidMsg.msgData[0] = feed->pid;
 118
 119         return smsclient_sendrequest(client->smsclient, &PidMsg, sizeof(PidMsg));
 120 }
 121
 122 static int smsdvb_stop_feed(struct dvb_demux_feed *feed)
 123 {
 124         smsdvb_client_t *client = container_of(feed->demux, smsdvb_client_t, demux);
 125         SmsMsgData_ST PidMsg;
 126
 127         printk("%s remove pid %d(%x)\n", __func__, feed->pid, feed->pid);
 128
 129         PidMsg.xMsgHeader.msgSrcId = DVBT_BDA_CONTROL_MSG_ID;
 130         PidMsg.xMsgHeader.msgDstId = HIF_TASK;
 131         PidMsg.xMsgHeader.msgFlags = 0;
 132         PidMsg.xMsgHeader.msgType  = MSG_SMS_REMOVE_PID_FILTER_REQ;
 133         PidMsg.xMsgHeader.msgLength = sizeof(PidMsg);
 134         PidMsg.msgData[0] = feed->pid;
 135
 136         return smsclient_sendrequest(client->smsclient, &PidMsg, sizeof(PidMsg));
 137 }
 138
 139 static int smsdvb_sendrequest_and_wait(smsdvb_client_t *client, void* buffer, size_t size, struct completion *completion)
 140 {
 141         int rc = smsclient_sendrequest(client->smsclient, buffer, size);
 142         if (rc < 0)
 143                 return rc;
 144
 145         return wait_for_completion_timeout(completion, msecs_to_jiffies(2000)) ? 0 : -ETIME;
 146 }
 147
 148 static int smsdvb_send_statistics_request(smsdvb_client_t *client)
 149 {
 150         SmsMsgHdr_ST Msg = { MSG_SMS_GET_STATISTICS_REQ, DVBT_BDA_CONTROL_MSG_ID, HIF_TASK, sizeof(SmsMsgHdr_ST), 0 };
 151         return smsdvb_sendrequest_and_wait(client, &Msg, sizeof(Msg), &client->stat_done);
 152 }
 153
 154 static int smsdvb_read_status(struct dvb_frontend *fe, fe_status_t *stat)
 155 {
 156         smsdvb_client_t *client = container_of(fe, smsdvb_client_t, frontend);
 157         int rc = smsdvb_send_statistics_request(client);
 158
 159         if (!rc)
 160                 *stat = client->fe_status;
 161
 162         return rc;
 163 }
 164
 165 static int smsdvb_read_ber(struct dvb_frontend *fe, u32 *ber)
 166 {
 167         smsdvb_client_t *client = container_of(fe, smsdvb_client_t, frontend);
 168         int rc = smsdvb_send_statistics_request(client);
 169
 170         if (!rc)
 171                 *ber = client->fe_ber;
 172
 173         return rc;
 174 }
 175
 176 static int smsdvb_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
 177 {
 178         smsdvb_client_t *client = container_of(fe, smsdvb_client_t, frontend);
 179         int rc = smsdvb_send_statistics_request(client);
 180
 181         if (!rc)
 182                 *strength = client->fe_signal_strength;
 183
 184         return rc;
 185 }
 186
 187 static int smsdvb_read_snr(struct dvb_frontend *fe, u16 *snr)
 188 {
 189         smsdvb_client_t *client = container_of(fe, smsdvb_client_t, frontend);
 190         int rc = smsdvb_send_statistics_request(client);
 191
 192         if (!rc)
 193                 *snr = client->fe_snr;
 194
 195         return rc;
 196 }
 197
 198 static int smsdvb_get_tune_settings(struct dvb_frontend *fe, struct dvb_frontend_tune_settings *tune)
 199 {
 200         printk("%s\n", __func__);
 201
 202         tune->min_delay_ms = 400;
 203         tune->step_size = 250000;
 204         tune->max_drift = 0;
 205         return 0;
 206 }
 207
 208 static int smsdvb_set_frontend(struct dvb_frontend *fe, struct dvb_frontend_parameters *fep)
 209 {
 210         smsdvb_client_t *client = container_of(fe, smsdvb_client_t, frontend);
 211
 212         struct
 213         {
 214                 SmsMsgHdr_ST    Msg;
 215                 u32                             Data[3];
 216         } Msg;
 217
 218         Msg.Msg.msgSrcId  = DVBT_BDA_CONTROL_MSG_ID;
 219         Msg.Msg.msgDstId  = HIF_TASK;
 220         Msg.Msg.msgFlags  = 0;
 221         Msg.Msg.msgType   = MSG_SMS_RF_TUNE_REQ;
 222         Msg.Msg.msgLength = sizeof(Msg);
 223         Msg.Data[0] = fep->frequency;
 224         Msg.Data[2] = 12000000;
 225
 226         printk("%s freq %d band %d\n", __func__, fep->frequency, fep->u.ofdm.bandwidth);
 227
 228         switch(fep->u.ofdm.bandwidth)
 229         {
 230                 case BANDWIDTH_8_MHZ: Msg.Data[1] = BW_8_MHZ; break;
 231                 case BANDWIDTH_7_MHZ: Msg.Data[1] = BW_7_MHZ; break;
 232                 case BANDWIDTH_6_MHZ: Msg.Data[1] = BW_6_MHZ; break;
 233 //              case BANDWIDTH_5_MHZ: Msg.Data[1] = BW_5_MHZ; break;
 234                 case BANDWIDTH_AUTO: return -EOPNOTSUPP;
 235                 default: return -EINVAL;
 236         }
 237
 238         return smsdvb_sendrequest_and_wait(client, &Msg, sizeof(Msg), &client->tune_done);
 239 }
 240
 241 static int smsdvb_get_frontend(struct dvb_frontend *fe, struct dvb_frontend_parameters *fep)
 242 {
 243         smsdvb_client_t *client = container_of(fe, smsdvb_client_t, frontend);
 244
 245         printk("%s\n", __func__);
 246
 247         // todo:
 248         memcpy(fep, &client->fe_params, sizeof(struct dvb_frontend_parameters));
 249         return 0;
 250 }
 251
 252 static void smsdvb_release(struct dvb_frontend *fe)
 253 {
 254         // do nothing
 255 }
 256
 257 static struct dvb_frontend_ops smsdvb_fe_ops = {
 258         .info = {
 259                 .name                           = "Siano Mobile Digital SMS10xx",
 260                 .type                           = FE_OFDM,
 261                 .frequency_min          = 44250000,
 262                 .frequency_max          = 867250000,
 263                 .frequency_stepsize     = 250000,
 264                 .caps = FE_CAN_INVERSION_AUTO |
 265                                 FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
 266                                 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
 267                                 FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
 268                                 FE_CAN_TRANSMISSION_MODE_AUTO |
 269                                 FE_CAN_GUARD_INTERVAL_AUTO |
 270                                 FE_CAN_RECOVER |
 271                                 FE_CAN_HIERARCHY_AUTO,
 272         },
 273
 274         .release = smsdvb_release,
 275
 276         .set_frontend = smsdvb_set_frontend,
 277         .get_frontend = smsdvb_get_frontend,
 278         .get_tune_settings = smsdvb_get_tune_settings,
 279
 280         .read_status = smsdvb_read_status,
 281         .read_ber = smsdvb_read_ber,
 282         .read_signal_strength = smsdvb_read_signal_strength,
 283         .read_snr = smsdvb_read_snr,
 284 };
 285
 286 int smsdvb_hotplug(smscore_device_t *coredev, struct device* device, int arrival)
 287 {
 288         smsclient_params_t params;
 289         smsdvb_client_t* client;
 290         int rc;
 291
 292         // device removal handled by onremove callback
 293         if (!arrival)
 294                 return 0;
 295
 296         if (smscore_get_device_mode(coredev) != 4)
 297         {
 298                 rc = smscore_set_device_mode(coredev, 4);
 299                 if (rc < 0)
 300                         return rc;
 301         }
 302
 303         client = kzalloc(sizeof(smsdvb_client_t), GFP_KERNEL);
 304         if (!client)
 305         {
 306                 printk(KERN_INFO "%s kmalloc() failed\n", __func__);
 307                 return -ENOMEM;
 308         }
 309
 310         // register dvb adapter
 311         rc = dvb_register_adapter(&client->adapter, "Siano Digital Receiver", THIS_MODULE, device, adapter_nr);
 312         if (rc < 0)
 313         {
 314                 printk("%s dvb_register_adapter() failed %d\n", __func__, rc);
 315                 goto adapter_error;
 316         }
 317
 318         // init dvb demux
 319         client->demux.dmx.capabilities = DMX_TS_FILTERING;
 320         client->demux.filternum = 32; // todo: nova ???
 321         client->demux.feednum = 32;
 322         client->demux.start_feed = smsdvb_start_feed;
 323         client->demux.stop_feed = smsdvb_stop_feed;
 324
 325         rc = dvb_dmx_init(&client->demux);
 326         if (rc < 0)
 327         {
 328                 printk("%s dvb_dmx_init failed %d\n\n", __func__, rc);
 329                 goto dvbdmx_error;
 330         }
 331
 332         // init dmxdev
 333         client->dmxdev.filternum = 32;
 334         client->dmxdev.demux = &client->demux.dmx;
 335         client->dmxdev.capabilities = 0;
 336
 337         rc = dvb_dmxdev_init(&client->dmxdev, &client->adapter);
 338         if (rc < 0)
 339         {
 340                 printk("%s dvb_dmxdev_init failed %d\n", __func__, rc);
 341                 goto dmxdev_error;
 342         }
 343
 344         // init and register frontend
 345         memcpy(&client->frontend.ops, &smsdvb_fe_ops, sizeof(struct dvb_frontend_ops));
 346
 347         rc = dvb_register_frontend(&client->adapter, &client->frontend);
 348         if (rc < 0)
 349         {
 350                 printk("%s frontend registration failed %d\n", __func__, rc);
 351                 goto frontend_error;
 352         }
 353
 354         params.initial_id = 0;
 355         params.data_type = MSG_SMS_DVBT_BDA_DATA;
 356         params.onresponse_handler = smsdvb_onresponse;
 357         params.onremove_handler = smsdvb_onremove;
 358         params.context = client;
 359
 360         rc = smscore_register_client(coredev, &params, &client->smsclient);
 361         if (rc < 0)
 362         {
 363                 printk(KERN_INFO "%s smscore_register_client() failed %d\n", __func__, rc);
 364                 goto client_error;
 365         }
 366
 367         client->coredev = coredev;
 368
 369         init_completion(&client->tune_done);
 370         init_completion(&client->stat_done);
 371
 372         kmutex_lock(&g_smsdvb_clientslock);
 373
 374         list_add(&client->entry, &g_smsdvb_clients);
 375
 376         kmutex_unlock(&g_smsdvb_clientslock);
 377
 378         printk(KERN_INFO "%s success\n", __func__);
 379
 380         return 0;
 381
 382 client_error:
 383         dvb_unregister_frontend(&client->frontend);
 384
 385 frontend_error:
 386         dvb_dmxdev_release(&client->dmxdev);
 387
 388 dmxdev_error:
 389         dvb_dmx_release(&client->demux);
 390
 391 dvbdmx_error:
 392         dvb_unregister_adapter(&client->adapter);
 393
 394 adapter_error:
 395         kfree(client);
 396         return rc;
 397 }
 398
 399 int smsdvb_register(void)
 400 {
 401         int rc;
 402
 403         INIT_LIST_HEAD(&g_smsdvb_clients);
 404         kmutex_init(&g_smsdvb_clientslock);
 405
 406         rc = smscore_register_hotplug(smsdvb_hotplug);
 407
 408         printk(KERN_INFO "%s\n", __func__);
 409
 410         return rc;
 411 }
 412
 413 void smsdvb_unregister(void)
 414 {
 415         smscore_unregister_hotplug(smsdvb_hotplug);
 416
 417         kmutex_lock(&g_smsdvb_clientslock);
 418
 419         while (!list_empty(&g_smsdvb_clients))
 420                 smsdvb_unregister_client((smsdvb_client_t*) g_smsdvb_clients.next);
 421
 422         kmutex_unlock(&g_smsdvb_clientslock);
 423
 424 }
 425