err.no Git - linux-2.6/blob - drivers/media/mdtv/smsdvb.c

   1 #include <linux/module.h>
   2 #include <linux/init.h>
   3
   4 #include "smscoreapi.h"
   5
   6 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
   7
   8 struct list_head g_smsdvb_clients;
   9 kmutex_t g_smsdvb_clientslock;
  10
  11 int smsdvb_onresponse(void *context, smscore_buffer_t *cb)
  12 {
  13         smsdvb_client_t *client = (smsdvb_client_t *) context;
  14         SmsMsgHdr_ST *phdr = (SmsMsgHdr_ST *)(((u8*) cb->p) + cb->offset);
  15
  16         switch(phdr->msgType)
  17         {
  18                 case MSG_SMS_DVBT_BDA_DATA:
  19                         dvb_dmx_swfilter(&client->demux, (u8*)(phdr + 1), cb->size - sizeof(SmsMsgHdr_ST));
  20                         break;
  21
  22                 case MSG_SMS_RF_TUNE_RES:
  23                         complete(&client->tune_done);
  24                         break;
  25
  26                 case MSG_SMS_GET_STATISTICS_RES:
  27                 {
  28                         SmsMsgStatisticsInfo_ST* p = (SmsMsgStatisticsInfo_ST*)(phdr + 1);
  29
  30                         if (p->Stat.IsDemodLocked)
  31                         {
  32                                 client->fe_status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK;
  33                                 client->fe_snr = p->Stat.SNR;
  34                                 client->fe_ber = p->Stat.BER;
  35
  36                                 if (p->Stat.InBandPwr < -95)
  37                                         client->fe_signal_strength = 0;
  38                                 else if (p->Stat.InBandPwr > -29)
  39                                         client->fe_signal_strength = 100;
  40                                 else
  41                                         client->fe_signal_strength = (p->Stat.InBandPwr + 95) * 3 / 2;
  42                         }
  43                         else
  44                         {
  45                                 client->fe_status = 0;
  46                                 client->fe_snr =
  47                                 client->fe_ber =
  48                                 client->fe_signal_strength = 0;
  49                         }
  50
  51                         complete(&client->stat_done);
  52                         break;
  53                 }
  54         }
  55
  56         smscore_putbuffer(client->coredev, cb);
  57
  58         return 0;
  59 }
  60
  61 void smsdvb_unregister_client(smsdvb_client_t* client)
  62 {
  63         // must be called under clientslock
  64
  65         list_del(&client->entry);
  66
  67         smscore_unregister_client(client->smsclient);
  68         dvb_unregister_frontend(&client->frontend);
  69         dvb_dmxdev_release(&client->dmxdev);
  70         dvb_dmx_release(&client->demux);
  71         dvb_unregister_adapter(&client->adapter);
  72         kfree(client);
  73 }
  74
  75 void smsdvb_onremove(void *context)
  76 {
  77         kmutex_lock(&g_smsdvb_clientslock);
  78
  79         smsdvb_unregister_client((smsdvb_client_t*) context);
  80
  81         kmutex_unlock(&g_smsdvb_clientslock);
  82 }
  83
  84 static int smsdvb_start_feed(struct dvb_demux_feed *feed)
  85 {
  86         smsdvb_client_t *client = container_of(feed->demux, smsdvb_client_t, demux);
  87         SmsMsgData_ST PidMsg;
  88
  89         printk("%s add pid %d(%x)\n", __FUNCTION__, feed->pid, feed->pid);
  90
  91         PidMsg.xMsgHeader.msgSrcId = DVBT_BDA_CONTROL_MSG_ID;
  92         PidMsg.xMsgHeader.msgDstId = HIF_TASK;
  93         PidMsg.xMsgHeader.msgFlags = 0;
  94         PidMsg.xMsgHeader.msgType  = MSG_SMS_ADD_PID_FILTER_REQ;
  95         PidMsg.xMsgHeader.msgLength = sizeof(PidMsg);
  96         PidMsg.msgData[0] = feed->pid;
  97
  98         return smsclient_sendrequest(client->smsclient, &PidMsg, sizeof(PidMsg));
  99 }
 100
 101 static int smsdvb_stop_feed(struct dvb_demux_feed *feed)
 102 {
 103         smsdvb_client_t *client = container_of(feed->demux, smsdvb_client_t, demux);
 104         SmsMsgData_ST PidMsg;
 105
 106         printk("%s remove pid %d(%x)\n", __FUNCTION__, feed->pid, feed->pid);
 107
 108         PidMsg.xMsgHeader.msgSrcId = DVBT_BDA_CONTROL_MSG_ID;
 109         PidMsg.xMsgHeader.msgDstId = HIF_TASK;
 110         PidMsg.xMsgHeader.msgFlags = 0;
 111         PidMsg.xMsgHeader.msgType  = MSG_SMS_REMOVE_PID_FILTER_REQ;
 112         PidMsg.xMsgHeader.msgLength = sizeof(PidMsg);
 113         PidMsg.msgData[0] = feed->pid;
 114
 115         return smsclient_sendrequest(client->smsclient, &PidMsg, sizeof(PidMsg));
 116 }
 117
 118 static int smsdvb_sendrequest_and_wait(smsdvb_client_t *client, void* buffer, size_t size, struct completion *completion)
 119 {
 120         int rc = smsclient_sendrequest(client->smsclient, buffer, size);
 121         if (rc < 0)
 122                 return rc;
 123
 124         return wait_for_completion_timeout(completion, msecs_to_jiffies(2000)) ? 0 : -ETIME;
 125 }
 126
 127 static int smsdvb_send_statistics_request(smsdvb_client_t *client)
 128 {
 129         SmsMsgHdr_ST Msg = { MSG_SMS_GET_STATISTICS_REQ, DVBT_BDA_CONTROL_MSG_ID, HIF_TASK, sizeof(SmsMsgHdr_ST), 0 };
 130         return smsdvb_sendrequest_and_wait(client, &Msg, sizeof(Msg), &client->stat_done);
 131 }
 132
 133 static int smsdvb_read_status(struct dvb_frontend *fe, fe_status_t *stat)
 134 {
 135         smsdvb_client_t *client = container_of(fe, smsdvb_client_t, frontend);
 136         int rc = smsdvb_send_statistics_request(client);
 137
 138         if (!rc)
 139                 *stat = client->fe_status;
 140
 141         return rc;
 142 }
 143
 144 static int smsdvb_read_ber(struct dvb_frontend *fe, u32 *ber)
 145 {
 146         smsdvb_client_t *client = container_of(fe, smsdvb_client_t, frontend);
 147         int rc = smsdvb_send_statistics_request(client);
 148
 149         if (!rc)
 150                 *ber = client->fe_ber;
 151
 152         return rc;
 153 }
 154
 155 static int smsdvb_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
 156 {
 157         smsdvb_client_t *client = container_of(fe, smsdvb_client_t, frontend);
 158         int rc = smsdvb_send_statistics_request(client);
 159
 160         if (!rc)
 161                 *strength = client->fe_signal_strength;
 162
 163         return rc;
 164 }
 165
 166 static int smsdvb_read_snr(struct dvb_frontend *fe, u16 *snr)
 167 {
 168         smsdvb_client_t *client = container_of(fe, smsdvb_client_t, frontend);
 169         int rc = smsdvb_send_statistics_request(client);
 170
 171         if (!rc)
 172                 *snr = client->fe_snr;
 173
 174         return rc;
 175 }
 176
 177 static int smsdvb_get_tune_settings(struct dvb_frontend *fe, struct dvb_frontend_tune_settings *tune)
 178 {
 179         printk("%s\n", __FUNCTION__);
 180
 181         tune->min_delay_ms = 400;
 182         tune->step_size = 250000;
 183         tune->max_drift = 0;
 184         return 0;
 185 }
 186
 187 static int smsdvb_set_frontend(struct dvb_frontend *fe, struct dvb_frontend_parameters *fep)
 188 {
 189         smsdvb_client_t *client = container_of(fe, smsdvb_client_t, frontend);
 190
 191         struct
 192         {
 193                 SmsMsgHdr_ST    Msg;
 194                 u32                             Data[3];
 195         } Msg;
 196
 197         Msg.Msg.msgSrcId  = DVBT_BDA_CONTROL_MSG_ID;
 198         Msg.Msg.msgDstId  = HIF_TASK;
 199         Msg.Msg.msgFlags  = 0;
 200         Msg.Msg.msgType   = MSG_SMS_RF_TUNE_REQ;
 201         Msg.Msg.msgLength = sizeof(Msg);
 202         Msg.Data[0] = fep->frequency;
 203         Msg.Data[2] = 12000000;
 204
 205         printk("%s freq %d band %d\n", __FUNCTION__, fep->frequency, fep->u.ofdm.bandwidth);
 206
 207         switch(fep->u.ofdm.bandwidth)
 208         {
 209                 case BANDWIDTH_8_MHZ: Msg.Data[1] = BW_8_MHZ; break;
 210                 case BANDWIDTH_7_MHZ: Msg.Data[1] = BW_7_MHZ; break;
 211                 case BANDWIDTH_6_MHZ: Msg.Data[1] = BW_6_MHZ; break;
 212 //              case BANDWIDTH_5_MHZ: Msg.Data[1] = BW_5_MHZ; break;
 213                 case BANDWIDTH_AUTO: return -EOPNOTSUPP;
 214                 default: return -EINVAL;
 215         }
 216
 217         return smsdvb_sendrequest_and_wait(client, &Msg, sizeof(Msg), &client->tune_done);
 218 }
 219
 220 static int smsdvb_get_frontend(struct dvb_frontend *fe, struct dvb_frontend_parameters *fep)
 221 {
 222         smsdvb_client_t *client = container_of(fe, smsdvb_client_t, frontend);
 223
 224         printk("%s\n", __FUNCTION__);
 225
 226         // todo:
 227         memcpy(fep, &client->fe_params, sizeof(struct dvb_frontend_parameters));
 228         return 0;
 229 }
 230
 231 static void smsdvb_release(struct dvb_frontend *fe)
 232 {
 233         // do nothing
 234 }
 235
 236 static struct dvb_frontend_ops smsdvb_fe_ops = {
 237         .info = {
 238                 .name                           = "Siano Mobile Digital SMS10xx",
 239                 .type                           = FE_OFDM,
 240                 .frequency_min          = 44250000,
 241                 .frequency_max          = 867250000,
 242                 .frequency_stepsize     = 250000,
 243                 .caps = FE_CAN_INVERSION_AUTO |
 244                                 FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
 245                                 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
 246                                 FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
 247                                 FE_CAN_TRANSMISSION_MODE_AUTO |
 248                                 FE_CAN_GUARD_INTERVAL_AUTO |
 249                                 FE_CAN_RECOVER |
 250                                 FE_CAN_HIERARCHY_AUTO,
 251         },
 252
 253         .release = smsdvb_release,
 254
 255         .set_frontend = smsdvb_set_frontend,
 256         .get_frontend = smsdvb_get_frontend,
 257         .get_tune_settings = smsdvb_get_tune_settings,
 258
 259         .read_status = smsdvb_read_status,
 260         .read_ber = smsdvb_read_ber,
 261         .read_signal_strength = smsdvb_read_signal_strength,
 262         .read_snr = smsdvb_read_snr,
 263 };
 264
 265 int smsdvb_hotplug(smscore_device_t *coredev, struct device* device, int arrival)
 266 {
 267         smsclient_params_t params;
 268         smsdvb_client_t* client;
 269         int rc;
 270
 271         // device removal handled by onremove callback
 272         if (!arrival)
 273                 return 0;
 274
 275         if (smscore_get_device_mode(coredev) != 4)
 276         {
 277                 rc = smscore_set_device_mode(coredev, 4);
 278                 if (rc < 0)
 279                         return rc;
 280         }
 281
 282         client = kzalloc(sizeof(smsdvb_client_t), GFP_KERNEL);
 283         if (!client)
 284         {
 285                 printk(KERN_INFO "%s kmalloc() failed\n", __FUNCTION__);
 286                 return -ENOMEM;
 287         }
 288
 289         // register dvb adapter
 290         rc = dvb_register_adapter(&client->adapter, "Siano Digital Receiver", THIS_MODULE, device, adapter_nr);
 291         if (rc < 0)
 292         {
 293                 printk("%s dvb_register_adapter() failed %d\n", __func__, rc);
 294                 goto adapter_error;
 295         }
 296
 297         // init dvb demux
 298         client->demux.dmx.capabilities = DMX_TS_FILTERING;
 299         client->demux.filternum = 32; // todo: nova ???
 300         client->demux.feednum = 32;
 301         client->demux.start_feed = smsdvb_start_feed;
 302         client->demux.stop_feed = smsdvb_stop_feed;
 303
 304         rc = dvb_dmx_init(&client->demux);
 305         if (rc < 0)
 306         {
 307                 printk("%s dvb_dmx_init failed %d\n\n", __FUNCTION__, rc);
 308                 goto dvbdmx_error;
 309         }
 310
 311         // init dmxdev
 312         client->dmxdev.filternum = 32;
 313         client->dmxdev.demux = &client->demux.dmx;
 314         client->dmxdev.capabilities = 0;
 315
 316         rc = dvb_dmxdev_init(&client->dmxdev, &client->adapter);
 317         if (rc < 0)
 318         {
 319                 printk("%s dvb_dmxdev_init failed %d\n", __FUNCTION__, rc);
 320                 goto dmxdev_error;
 321         }
 322
 323         // init and register frontend
 324         memcpy(&client->frontend.ops, &smsdvb_fe_ops, sizeof(struct dvb_frontend_ops));
 325
 326         rc = dvb_register_frontend(&client->adapter, &client->frontend);
 327         if (rc < 0)
 328         {
 329                 printk("%s frontend registration failed %d\n", __FUNCTION__, rc);
 330                 goto frontend_error;
 331         }
 332
 333         params.initial_id = 0;
 334         params.data_type = MSG_SMS_DVBT_BDA_DATA;
 335         params.onresponse_handler = smsdvb_onresponse;
 336         params.onremove_handler = smsdvb_onremove;
 337         params.context = client;
 338
 339         rc = smscore_register_client(coredev, &params, &client->smsclient);
 340         if (rc < 0)
 341         {
 342                 printk(KERN_INFO "%s smscore_register_client() failed %d\n", __FUNCTION__, rc);
 343                 goto client_error;
 344         }
 345
 346         client->coredev = coredev;
 347
 348         init_completion(&client->tune_done);
 349         init_completion(&client->stat_done);
 350
 351         kmutex_lock(&g_smsdvb_clientslock);
 352
 353         list_add(&client->entry, &g_smsdvb_clients);
 354
 355         kmutex_unlock(&g_smsdvb_clientslock);
 356
 357         printk(KERN_INFO "%s success\n", __FUNCTION__);
 358
 359         return 0;
 360
 361 client_error:
 362         dvb_unregister_frontend(&client->frontend);
 363
 364 frontend_error:
 365         dvb_dmxdev_release(&client->dmxdev);
 366
 367 dmxdev_error:
 368         dvb_dmx_release(&client->demux);
 369
 370 dvbdmx_error:
 371         dvb_unregister_adapter(&client->adapter);
 372
 373 adapter_error:
 374         kfree(client);
 375         return rc;
 376 }
 377