git.oblomov.eu Git - linux-2.6/blob - 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),
  41                                          cb->size - sizeof(SmsMsgHdr_ST));
  42                         break;
  43
  44                 case MSG_SMS_RF_TUNE_RES:
  45                         complete(&client->tune_done);
  46                         break;
  47
  48                 case MSG_SMS_GET_STATISTICS_RES:
  49                 {
  50                         SmsMsgStatisticsInfo_ST *p =
  51                                 (SmsMsgStatisticsInfo_ST *)(phdr + 1);
  52
  53                         if (p->Stat.IsDemodLocked)
  54                         {
  55                                 client->fe_status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK;
  56                                 client->fe_snr = p->Stat.SNR;
  57                                 client->fe_ber = p->Stat.BER;
  58
  59                                 if (p->Stat.InBandPwr < -95)
  60                                         client->fe_signal_strength = 0;
  61                                 else if (p->Stat.InBandPwr > -29)
  62                                         client->fe_signal_strength = 100;
  63                                 else
  64                                         client->fe_signal_strength = (p->Stat.InBandPwr + 95) * 3 / 2;
  65                         }
  66                         else
  67                         {
  68                                 client->fe_status = 0;
  69                                 client->fe_snr =
  70                                 client->fe_ber =
  71                                 client->fe_signal_strength = 0;
  72                         }
  73
  74                         complete(&client->stat_done);
  75                         break;
  76                 }
  77         }
  78
  79         smscore_putbuffer(client->coredev, cb);
  80
  81         return 0;
  82 }
  83
  84 void smsdvb_unregister_client(smsdvb_client_t *client)
  85 {
  86         // must be called under clientslock
  87
  88         list_del(&client->entry);
  89
  90         smscore_unregister_client(client->smsclient);
  91         dvb_unregister_frontend(&client->frontend);
  92         dvb_dmxdev_release(&client->dmxdev);
  93         dvb_dmx_release(&client->demux);
  94         dvb_unregister_adapter(&client->adapter);
  95         kfree(client);
  96 }
  97
  98 void smsdvb_onremove(void *context)
  99 {
 100         kmutex_lock(&g_smsdvb_clientslock);
 101
 102         smsdvb_unregister_client((smsdvb_client_t *) context);
 103
 104         kmutex_unlock(&g_smsdvb_clientslock);
 105 }
 106
 107 static int smsdvb_start_feed(struct dvb_demux_feed *feed)
 108 {
 109         smsdvb_client_t *client = container_of(feed->demux, smsdvb_client_t, demux);
 110         SmsMsgData_ST PidMsg;
 111
 112         printk("%s add pid %d(%x)\n", __func__, feed->pid, feed->pid);
 113
 114         PidMsg.xMsgHeader.msgSrcId = DVBT_BDA_CONTROL_MSG_ID;
 115         PidMsg.xMsgHeader.msgDstId = HIF_TASK;
 116         PidMsg.xMsgHeader.msgFlags = 0;
 117         PidMsg.xMsgHeader.msgType  = MSG_SMS_ADD_PID_FILTER_REQ;
 118         PidMsg.xMsgHeader.msgLength = sizeof(PidMsg);
 119         PidMsg.msgData[0] = feed->pid;
 120
 121         return smsclient_sendrequest(client->smsclient, &PidMsg, sizeof(PidMsg));
 122 }
 123
 124 static int smsdvb_stop_feed(struct dvb_demux_feed *feed)
 125 {
 126         smsdvb_client_t *client = container_of(feed->demux, smsdvb_client_t, demux);
 127         SmsMsgData_ST PidMsg;
 128
 129         printk("%s remove pid %d(%x)\n", __func__, feed->pid, feed->pid);
 130
 131         PidMsg.xMsgHeader.msgSrcId = DVBT_BDA_CONTROL_MSG_ID;
 132         PidMsg.xMsgHeader.msgDstId = HIF_TASK;
 133         PidMsg.xMsgHeader.msgFlags = 0;
 134         PidMsg.xMsgHeader.msgType  = MSG_SMS_REMOVE_PID_FILTER_REQ;
 135         PidMsg.xMsgHeader.msgLength = sizeof(PidMsg);
 136         PidMsg.msgData[0] = feed->pid;
 137
 138         return smsclient_sendrequest(client->smsclient, &PidMsg, sizeof(PidMsg));
 139 }
 140
 141 static int smsdvb_sendrequest_and_wait(smsdvb_client_t *client,
 142                                         void *buffer, size_t size,
 143                                         struct completion *completion)
 144 {
 145         int rc = smsclient_sendrequest(client->smsclient, buffer, size);
 146         if (rc < 0)
 147                 return rc;
 148
 149         return wait_for_completion_timeout(completion, msecs_to_jiffies(2000)) ? 0 : -ETIME;
 150 }
 151
 152 static int smsdvb_send_statistics_request(smsdvb_client_t *client)
 153 {
 154         SmsMsgHdr_ST Msg = { MSG_SMS_GET_STATISTICS_REQ, DVBT_BDA_CONTROL_MSG_ID, HIF_TASK, sizeof(SmsMsgHdr_ST), 0 };
 155         return smsdvb_sendrequest_and_wait(client, &Msg, sizeof(Msg), &client->stat_done);
 156 }
 157
 158 static int smsdvb_read_status(struct dvb_frontend *fe, fe_status_t *stat)
 159 {
 160         smsdvb_client_t *client = container_of(fe, smsdvb_client_t, frontend);
 161         int rc = smsdvb_send_statistics_request(client);
 162
 163         if (!rc)
 164                 *stat = client->fe_status;
 165
 166         return rc;
 167 }
 168
 169 static int smsdvb_read_ber(struct dvb_frontend *fe, u32 *ber)
 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                 *ber = client->fe_ber;
 176
 177         return rc;
 178 }
 179
 180 static int smsdvb_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
 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                 *strength = client->fe_signal_strength;
 187
 188         return rc;
 189 }
 190
 191 static int smsdvb_read_snr(struct dvb_frontend *fe, u16 *snr)
 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                 *snr = client->fe_snr;
 198
 199         return rc;
 200 }
 201
 202 static int smsdvb_get_tune_settings(struct dvb_frontend *fe, struct dvb_frontend_tune_settings *tune)
 203 {
 204         printk("%s\n", __func__);
 205
 206         tune->min_delay_ms = 400;
 207         tune->step_size = 250000;
 208         tune->max_drift = 0;
 209         return 0;
 210 }
 211
 212 static int smsdvb_set_frontend(struct dvb_frontend *fe, struct dvb_frontend_parameters *fep)
 213 {
 214         smsdvb_client_t *client = container_of(fe, smsdvb_client_t, frontend);
 215
 216         struct
 217         {
 218                 SmsMsgHdr_ST    Msg;
 219                 u32                             Data[3];
 220         } Msg;
 221
 222         Msg.Msg.msgSrcId  = DVBT_BDA_CONTROL_MSG_ID;
 223         Msg.Msg.msgDstId  = HIF_TASK;
 224         Msg.Msg.msgFlags  = 0;
 225         Msg.Msg.msgType   = MSG_SMS_RF_TUNE_REQ;
 226         Msg.Msg.msgLength = sizeof(Msg);
 227         Msg.Data[0] = fep->frequency;
 228         Msg.Data[2] = 12000000;
 229
 230         printk("%s freq %d band %d\n", __func__, fep->frequency, fep->u.ofdm.bandwidth);
 231
 232         switch(fep->u.ofdm.bandwidth)
 233         {
 234                 case BANDWIDTH_8_MHZ: Msg.Data[1] = BW_8_MHZ; break;
 235                 case BANDWIDTH_7_MHZ: Msg.Data[1] = BW_7_MHZ; break;
 236                 case BANDWIDTH_6_MHZ: Msg.Data[1] = BW_6_MHZ; break;
 237 //              case BANDWIDTH_5_MHZ: Msg.Data[1] = BW_5_MHZ; break;
 238                 case BANDWIDTH_AUTO: return -EOPNOTSUPP;
 239                 default: return -EINVAL;
 240         }
 241
 242         return smsdvb_sendrequest_and_wait(client, &Msg, sizeof(Msg), &client->tune_done);
 243 }
 244
 245 static int smsdvb_get_frontend(struct dvb_frontend *fe, struct dvb_frontend_parameters *fep)
 246 {
 247         smsdvb_client_t *client = container_of(fe, smsdvb_client_t, frontend);
 248
 249         printk("%s\n", __func__);
 250
 251         // todo:
 252         memcpy(fep, &client->fe_params, sizeof(struct dvb_frontend_parameters));
 253         return 0;
 254 }
 255
 256 static void smsdvb_release(struct dvb_frontend *fe)
 257 {
 258         // do nothing
 259 }
 260
 261 static struct dvb_frontend_ops smsdvb_fe_ops = {
 262         .info = {
 263                 .name                           = "Siano Mobile Digital SMS10xx",
 264                 .type                           = FE_OFDM,
 265                 .frequency_min          = 44250000,
 266                 .frequency_max          = 867250000,
 267                 .frequency_stepsize     = 250000,
 268                 .caps = FE_CAN_INVERSION_AUTO |
 269                                 FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
 270                                 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
 271                                 FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
 272                                 FE_CAN_TRANSMISSION_MODE_AUTO |
 273                                 FE_CAN_GUARD_INTERVAL_AUTO |
 274                                 FE_CAN_RECOVER |
 275                                 FE_CAN_HIERARCHY_AUTO,
 276         },
 277
 278         .release = smsdvb_release,
 279
 280         .set_frontend = smsdvb_set_frontend,
 281         .get_frontend = smsdvb_get_frontend,
 282         .get_tune_settings = smsdvb_get_tune_settings,
 283
 284         .read_status = smsdvb_read_status,
 285         .read_ber = smsdvb_read_ber,
 286         .read_signal_strength = smsdvb_read_signal_strength,
 287         .read_snr = smsdvb_read_snr,
 288 };
 289
 290 int smsdvb_hotplug(smscore_device_t *coredev, struct device *device,
 291                     int arrival)
 292 {
 293         smsclient_params_t params;
 294         smsdvb_client_t *client;
 295         int rc;
 296
 297         // device removal handled by onremove callback
 298         if (!arrival)
 299                 return 0;
 300
 301         if (smscore_get_device_mode(coredev) != 4)
 302         {
 303                 printk(KERN_ERR "%sSMS Device mode is not set for DVB operation.\n", __func__);
 304                 return 0;
 305         }
 306
 307         client = kzalloc(sizeof(smsdvb_client_t), GFP_KERNEL);
 308         if (!client)
 309         {
 310                 printk(KERN_INFO "%s kmalloc() failed\n", __func__);
 311                 return -ENOMEM;
 312         }
 313
 314         // register dvb adapter
 315         rc = dvb_register_adapter(&client->adapter, "Siano Digital Receiver", THIS_MODULE, device, adapter_nr);
 316         if (rc < 0)
 317         {
 318                 printk("%s dvb_register_adapter() failed %d\n", __func__, rc);
 319                 goto adapter_error;
 320         }
 321
 322         // init dvb demux
 323         client->demux.dmx.capabilities = DMX_TS_FILTERING;
 324         client->demux.filternum = 32; // todo: nova ???
 325         client->demux.feednum = 32;
 326         client->demux.start_feed = smsdvb_start_feed;
 327         client->demux.stop_feed = smsdvb_stop_feed;
 328
 329         rc = dvb_dmx_init(&client->demux);
 330         if (rc < 0)
 331         {
 332                 printk("%s dvb_dmx_init failed %d\n\n", __func__, rc);
 333                 goto dvbdmx_error;
 334         }
 335
 336         // init dmxdev
 337         client->dmxdev.filternum = 32;
 338         client->dmxdev.demux = &client->demux.dmx;
 339         client->dmxdev.capabilities = 0;
 340
 341         rc = dvb_dmxdev_init(&client->dmxdev, &client->adapter);
 342         if (rc < 0)
 343         {
 344                 printk("%s dvb_dmxdev_init failed %d\n", __func__, rc);
 345                 goto dmxdev_error;
 346         }
 347
 348         // init and register frontend
 349         memcpy(&client->frontend.ops, &smsdvb_fe_ops, sizeof(struct dvb_frontend_ops));
 350
 351         rc = dvb_register_frontend(&client->adapter, &client->frontend);
 352         if (rc < 0)
 353         {
 354                 printk("%s frontend registration failed %d\n", __func__, rc);
 355                 goto frontend_error;
 356         }
 357
 358         params.initial_id = 1;
 359         params.data_type = MSG_SMS_DVBT_BDA_DATA;
 360         params.onresponse_handler = smsdvb_onresponse;
 361         params.onremove_handler = smsdvb_onremove;
 362         params.context = client;
 363
 364         rc = smscore_register_client(coredev, &params, &client->smsclient);
 365         if (rc < 0)
 366         {
 367                 printk(KERN_INFO "%s smscore_register_client() failed %d\n", __func__, rc);
 368                 goto client_error;
 369         }
 370
 371         client->coredev = coredev;
 372
 373         init_completion(&client->tune_done);
 374         init_completion(&client->stat_done);
 375
 376         kmutex_lock(&g_smsdvb_clientslock);
 377
 378         list_add(&client->entry, &g_smsdvb_clients);
 379
 380         kmutex_unlock(&g_smsdvb_clientslock);
 381
 382         printk(KERN_INFO "%s success\n", __func__);
 383
 384         return 0;
 385
 386 client_error:
 387         dvb_unregister_frontend(&client->frontend);
 388
 389 frontend_error:
 390         dvb_dmxdev_release(&client->dmxdev);
 391
 392 dmxdev_error:
 393         dvb_dmx_release(&client->demux);
 394
 395 dvbdmx_error:
 396         dvb_unregister_adapter(&client->adapter);
 397
 398 adapter_error:
 399         kfree(client);
 400         return rc;
 401 }
 402
 403 int smsdvb_register(void)
 404 {
 405         int rc;
 406
 407         INIT_LIST_HEAD(&g_smsdvb_clients);
 408         kmutex_init(&g_smsdvb_clientslock);
 409
 410         rc = smscore_register_hotplug(smsdvb_hotplug);
 411
 412         printk(KERN_INFO "%s\n", __func__);
 413
 414         return rc;
 415 }
 416
 417 void smsdvb_unregister(void)
 418 {
 419         smscore_unregister_hotplug(smsdvb_hotplug);
 420
 421         kmutex_lock(&g_smsdvb_clientslock);
 422
 423         while (!list_empty(&g_smsdvb_clients))
 424                 smsdvb_unregister_client((smsdvb_client_t *) g_smsdvb_clients.next);
 425
 426         kmutex_unlock(&g_smsdvb_clientslock);
 427
 428 }
 429