SAFE public projects git trees. - safe/jmp/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         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                         client->fe_status = FE_HAS_SIGNAL |
  54                                             FE_HAS_CARRIER |
  55                                             FE_HAS_VITERBI |
  56                                             FE_HAS_SYNC |
  57                                             FE_HAS_LOCK;
  58
  59                         client->fe_snr = p->Stat.SNR;
  60                         client->fe_ber = p->Stat.BER;
  61
  62                         if (p->Stat.InBandPwr < -95)
  63                                 client->fe_signal_strength = 0;
  64                         else if (p->Stat.InBandPwr > -29)
  65                                 client->fe_signal_strength = 100;
  66                         else
  67                                 client->fe_signal_strength =
  68                                         (p->Stat.InBandPwr + 95) * 3 / 2;
  69                 } else {
  70                         client->fe_status = 0;
  71                         client->fe_snr =
  72                         client->fe_ber =
  73                         client->fe_signal_strength = 0;
  74                 }
  75
  76                 complete(&client->stat_done);
  77                 break;
  78         } }
  79
  80         smscore_putbuffer(client->coredev, cb);
  81
  82         return 0;
  83 }
  84
  85 void smsdvb_unregister_client(smsdvb_client_t *client)
  86 {
  87         /* must be called under clientslock */
  88
  89         list_del(&client->entry);
  90
  91         smscore_unregister_client(client->smsclient);
  92         dvb_unregister_frontend(&client->frontend);
  93         dvb_dmxdev_release(&client->dmxdev);
  94         dvb_dmx_release(&client->demux);
  95         dvb_unregister_adapter(&client->adapter);
  96         kfree(client);
  97 }
  98
  99 void smsdvb_onremove(void *context)
 100 {
 101         kmutex_lock(&g_smsdvb_clientslock);
 102
 103         smsdvb_unregister_client((smsdvb_client_t *) context);
 104
 105         kmutex_unlock(&g_smsdvb_clientslock);
 106 }
 107
 108 static int smsdvb_start_feed(struct dvb_demux_feed *feed)
 109 {
 110         smsdvb_client_t *client =
 111                 container_of(feed->demux, smsdvb_client_t, demux);
 112         SmsMsgData_ST PidMsg;
 113
 114         printk(KERN_DEBUG "%s add pid %d(%x)\n", __func__,
 115                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(KERN_DEBUG "%s remove pid %d(%x)\n", __func__,
 135                feed->pid, feed->pid);
 136
 137         PidMsg.xMsgHeader.msgSrcId = DVBT_BDA_CONTROL_MSG_ID;
 138         PidMsg.xMsgHeader.msgDstId = HIF_TASK;
 139         PidMsg.xMsgHeader.msgFlags = 0;
 140         PidMsg.xMsgHeader.msgType  = MSG_SMS_REMOVE_PID_FILTER_REQ;
 141         PidMsg.xMsgHeader.msgLength = sizeof(PidMsg);
 142         PidMsg.msgData[0] = feed->pid;
 143
 144         return smsclient_sendrequest(client->smsclient,
 145                                      &PidMsg, sizeof(PidMsg));
 146 }
 147
 148 static int smsdvb_sendrequest_and_wait(smsdvb_client_t *client,
 149                                         void *buffer, size_t size,
 150                                         struct completion *completion)
 151 {
 152         int rc = smsclient_sendrequest(client->smsclient, buffer, size);
 153         if (rc < 0)
 154                 return rc;
 155
 156         return wait_for_completion_timeout(completion,
 157                                            msecs_to_jiffies(2000)) ?
 158                                                 0 : -ETIME;
 159 }
 160
 161 static int smsdvb_send_statistics_request(smsdvb_client_t *client)
 162 {
 163         SmsMsgHdr_ST Msg = { MSG_SMS_GET_STATISTICS_REQ,
 164                              DVBT_BDA_CONTROL_MSG_ID,
 165                              HIF_TASK, sizeof(SmsMsgHdr_ST), 0 };
 166         return smsdvb_sendrequest_and_wait(client, &Msg, sizeof(Msg),
 167                                            &client->stat_done);
 168 }
 169
 170 static int smsdvb_read_status(struct dvb_frontend *fe, fe_status_t *stat)
 171 {
 172         smsdvb_client_t *client = container_of(fe, smsdvb_client_t, frontend);
 173         int rc = smsdvb_send_statistics_request(client);
 174
 175         if (!rc)
 176                 *stat = client->fe_status;
 177
 178         return rc;
 179 }
 180
 181 static int smsdvb_read_ber(struct dvb_frontend *fe, u32 *ber)
 182 {
 183         smsdvb_client_t *client = container_of(fe, smsdvb_client_t, frontend);
 184         int rc = smsdvb_send_statistics_request(client);
 185
 186         if (!rc)
 187                 *ber = client->fe_ber;
 188
 189         return rc;
 190 }
 191
 192 static int smsdvb_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
 193 {
 194         smsdvb_client_t *client = container_of(fe, smsdvb_client_t, frontend);
 195         int rc = smsdvb_send_statistics_request(client);
 196
 197         if (!rc)
 198                 *strength = client->fe_signal_strength;
 199
 200         return rc;
 201 }
 202
 203 static int smsdvb_read_snr(struct dvb_frontend *fe, u16 *snr)
 204 {
 205         smsdvb_client_t *client = container_of(fe, smsdvb_client_t, frontend);
 206         int rc = smsdvb_send_statistics_request(client);
 207
 208         if (!rc)
 209                 *snr = client->fe_snr;
 210
 211         return rc;
 212 }
 213
 214 static int smsdvb_get_tune_settings(struct dvb_frontend *fe,
 215                                     struct dvb_frontend_tune_settings *tune)
 216 {
 217         printk(KERN_DEBUG "%s\n", __func__);
 218
 219         tune->min_delay_ms = 400;
 220         tune->step_size = 250000;
 221         tune->max_drift = 0;
 222         return 0;
 223 }
 224
 225 static int smsdvb_set_frontend(struct dvb_frontend *fe,
 226                                struct dvb_frontend_parameters *fep)
 227 {
 228         smsdvb_client_t *client = container_of(fe, smsdvb_client_t, frontend);
 229
 230         struct
 231         {
 232                 SmsMsgHdr_ST    Msg;
 233                 u32             Data[3];
 234         } Msg;
 235
 236         Msg.Msg.msgSrcId  = DVBT_BDA_CONTROL_MSG_ID;
 237         Msg.Msg.msgDstId  = HIF_TASK;
 238         Msg.Msg.msgFlags  = 0;
 239         Msg.Msg.msgType   = MSG_SMS_RF_TUNE_REQ;
 240         Msg.Msg.msgLength = sizeof(Msg);
 241         Msg.Data[0] = fep->frequency;
 242         Msg.Data[2] = 12000000;
 243
 244         printk(KERN_DEBUG "%s freq %d band %d\n", __func__,
 245                fep->frequency, fep->u.ofdm.bandwidth);
 246
 247         switch (fep->u.ofdm.bandwidth) {
 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(KERN_DEBUG "%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 "
 319                        "DVB operation.\n", __func__);
 320                 return 0;
 321         }
 322
 323         client = kzalloc(sizeof(smsdvb_client_t), GFP_KERNEL);
 324         if (!client) {
 325                 printk(KERN_INFO "%s kmalloc() failed\n", __func__);
 326                 return -ENOMEM;
 327         }
 328
 329         /* register dvb adapter */
 330         rc = dvb_register_adapter(&client->adapter, "Siano Digital Receiver",
 331                                   THIS_MODULE, device, adapter_nr);
 332         if (rc < 0) {
 333                 printk(KERN_ERR "%s dvb_register_adapter() failed %d\n",
 334                        __func__, rc);
 335                 goto adapter_error;
 336         }
 337
 338         /* init dvb demux */
 339         client->demux.dmx.capabilities = DMX_TS_FILTERING;
 340         client->demux.filternum = 32; /* todo: nova ??? */
 341         client->demux.feednum = 32;
 342         client->demux.start_feed = smsdvb_start_feed;
 343         client->demux.stop_feed = smsdvb_stop_feed;
 344
 345         rc = dvb_dmx_init(&client->demux);
 346         if (rc < 0) {
 347                 printk(KERN_ERR "%s dvb_dmx_init failed %d\n\n",
 348                        __func__, rc);
 349                 goto dvbdmx_error;
 350         }
 351
 352         /* init dmxdev */
 353         client->dmxdev.filternum = 32;
 354         client->dmxdev.demux = &client->demux.dmx;
 355         client->dmxdev.capabilities = 0;
 356
 357         rc = dvb_dmxdev_init(&client->dmxdev, &client->adapter);
 358         if (rc < 0) {
 359                 printk(KERN_ERR "%s dvb_dmxdev_init failed %d\n",
 360                        __func__, rc);
 361                 goto dmxdev_error;
 362         }
 363
 364         /* init and register frontend */
 365         memcpy(&client->frontend.ops, &smsdvb_fe_ops,
 366                sizeof(struct dvb_frontend_ops));
 367
 368         rc = dvb_register_frontend(&client->adapter, &client->frontend);
 369         if (rc < 0) {
 370                 printk(KERN_ERR "%s frontend registration failed %d\n",
 371                        __func__, rc);
 372                 goto frontend_error;
 373         }
 374
 375         params.initial_id = 1;
 376         params.data_type = MSG_SMS_DVBT_BDA_DATA;
 377         params.onresponse_handler = smsdvb_onresponse;
 378         params.onremove_handler = smsdvb_onremove;
 379         params.context = client;
 380
 381         rc = smscore_register_client(coredev, &params, &client->smsclient);
 382         if (rc < 0) {
 383                 printk(KERN_INFO "%s smscore_register_client() failed %d\n",
 384                        __func__, rc);
 385                 goto client_error;
 386         }
 387
 388         client->coredev = coredev;
 389
 390         init_completion(&client->tune_done);
 391         init_completion(&client->stat_done);
 392
 393         kmutex_lock(&g_smsdvb_clientslock);
 394
 395         list_add(&client->entry, &g_smsdvb_clients);
 396
 397         kmutex_unlock(&g_smsdvb_clientslock);
 398
 399         printk(KERN_INFO "%s success\n", __func__);
 400
 401         return 0;
 402
 403 client_error:
 404         dvb_unregister_frontend(&client->frontend);
 405
 406 frontend_error:
 407         dvb_dmxdev_release(&client->dmxdev);
 408
 409 dmxdev_error:
 410         dvb_dmx_release(&client->demux);
 411
 412 dvbdmx_error:
 413         dvb_unregister_adapter(&client->adapter);
 414
 415 adapter_error:
 416         kfree(client);
 417         return rc;
 418 }
 419
 420 int smsdvb_register(void)
 421 {
 422         int rc;
 423
 424         INIT_LIST_HEAD(&g_smsdvb_clients);
 425         kmutex_init(&g_smsdvb_clientslock);
 426
 427         rc = smscore_register_hotplug(smsdvb_hotplug);
 428
 429         printk(KERN_INFO "%s\n", __func__);
 430
 431         return rc;
 432 }
 433
 434 void smsdvb_unregister(void)
 435 {
 436         smscore_unregister_hotplug(smsdvb_hotplug);
 437
 438         kmutex_lock(&g_smsdvb_clientslock);
 439
 440         while (!list_empty(&g_smsdvb_clients))
 441                smsdvb_unregister_client(
 442                         (smsdvb_client_t *) g_smsdvb_clients.next);
 443
 444         kmutex_unlock(&g_smsdvb_clientslock);
 445 }