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, struct smscore_buffer_t *cb)
  33 {
  34         struct smsdvb_client_t *client = (struct smsdvb_client_t *) context;
  35         struct SmsMsgHdr_ST *phdr =
  36                 (struct SmsMsgHdr_ST *)(((u8 *) cb->p) + cb->offset);
  37
  38         switch (phdr->msgType) {
  39         case MSG_SMS_DVBT_BDA_DATA:
  40                 dvb_dmx_swfilter(&client->demux, (u8 *)(phdr + 1),
  41                                  cb->size - sizeof(struct 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                 struct SmsMsgStatisticsInfo_ST *p =
  51                         (struct SmsMsgStatisticsInfo_ST *)(phdr + 1);
  52
  53                 if (p->Stat.IsDemodLocked) {
  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(struct 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((struct 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         struct smsdvb_client_t *client =
 112                 container_of(feed->demux, struct smsdvb_client_t, demux);
 113         struct SmsMsgData_ST PidMsg;
 114
 115         printk(KERN_DEBUG "%s add pid %d(%x)\n", __func__,
 116                feed->pid, feed->pid);
 117
 118         PidMsg.xMsgHeader.msgSrcId = DVBT_BDA_CONTROL_MSG_ID;
 119         PidMsg.xMsgHeader.msgDstId = HIF_TASK;
 120         PidMsg.xMsgHeader.msgFlags = 0;
 121         PidMsg.xMsgHeader.msgType  = MSG_SMS_ADD_PID_FILTER_REQ;
 122         PidMsg.xMsgHeader.msgLength = sizeof(PidMsg);
 123         PidMsg.msgData[0] = feed->pid;
 124
 125         return smsclient_sendrequest(client->smsclient,
 126                                      &PidMsg, sizeof(PidMsg));
 127 }
 128
 129 static int smsdvb_stop_feed(struct dvb_demux_feed *feed)
 130 {
 131         struct smsdvb_client_t *client =
 132                 container_of(feed->demux, struct smsdvb_client_t, demux);
 133         struct SmsMsgData_ST PidMsg;
 134
 135         printk(KERN_DEBUG "%s remove pid %d(%x)\n", __func__,
 136                feed->pid, feed->pid);
 137
 138         PidMsg.xMsgHeader.msgSrcId = DVBT_BDA_CONTROL_MSG_ID;
 139         PidMsg.xMsgHeader.msgDstId = HIF_TASK;
 140         PidMsg.xMsgHeader.msgFlags = 0;
 141         PidMsg.xMsgHeader.msgType  = MSG_SMS_REMOVE_PID_FILTER_REQ;
 142         PidMsg.xMsgHeader.msgLength = sizeof(PidMsg);
 143         PidMsg.msgData[0] = feed->pid;
 144
 145         return smsclient_sendrequest(client->smsclient,
 146                                      &PidMsg, sizeof(PidMsg));
 147 }
 148
 149 static int smsdvb_sendrequest_and_wait(struct smsdvb_client_t *client,
 150                                         void *buffer, size_t size,
 151                                         struct completion *completion)
 152 {
 153         int rc = smsclient_sendrequest(client->smsclient, buffer, size);
 154         if (rc < 0)
 155                 return rc;
 156
 157         return wait_for_completion_timeout(completion,
 158                                            msecs_to_jiffies(2000)) ?
 159                                                 0 : -ETIME;
 160 }
 161
 162 static int smsdvb_send_statistics_request(struct smsdvb_client_t *client)
 163 {
 164         struct SmsMsgHdr_ST Msg = { MSG_SMS_GET_STATISTICS_REQ,
 165                              DVBT_BDA_CONTROL_MSG_ID,
 166                              HIF_TASK, sizeof(struct SmsMsgHdr_ST), 0 };
 167         return smsdvb_sendrequest_and_wait(client, &Msg, sizeof(Msg),
 168                                            &client->stat_done);
 169 }
 170
 171 static int smsdvb_read_status(struct dvb_frontend *fe, fe_status_t *stat)
 172 {
 173         struct smsdvb_client_t *client =
 174                 container_of(fe, struct smsdvb_client_t, frontend);
 175         int rc = smsdvb_send_statistics_request(client);
 176
 177         if (!rc)
 178                 *stat = client->fe_status;
 179
 180         return rc;
 181 }
 182
 183 static int smsdvb_read_ber(struct dvb_frontend *fe, u32 *ber)
 184 {
 185         struct smsdvb_client_t *client =
 186                 container_of(fe, struct smsdvb_client_t, frontend);
 187         int rc = smsdvb_send_statistics_request(client);
 188
 189         if (!rc)
 190                 *ber = client->fe_ber;
 191
 192         return rc;
 193 }
 194
 195 static int smsdvb_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
 196 {
 197         struct smsdvb_client_t *client =
 198                 container_of(fe, struct smsdvb_client_t, frontend);
 199         int rc = smsdvb_send_statistics_request(client);
 200
 201         if (!rc)
 202                 *strength = client->fe_signal_strength;
 203
 204         return rc;
 205 }
 206
 207 static int smsdvb_read_snr(struct dvb_frontend *fe, u16 *snr)
 208 {
 209         struct smsdvb_client_t *client =
 210                 container_of(fe, struct smsdvb_client_t, frontend);
 211         int rc = smsdvb_send_statistics_request(client);
 212
 213         if (!rc)
 214                 *snr = client->fe_snr;
 215
 216         return rc;
 217 }
 218
 219 static int smsdvb_get_tune_settings(struct dvb_frontend *fe,
 220                                     struct dvb_frontend_tune_settings *tune)
 221 {
 222         printk(KERN_DEBUG "%s\n", __func__);
 223
 224         tune->min_delay_ms = 400;
 225         tune->step_size = 250000;
 226         tune->max_drift = 0;
 227         return 0;
 228 }
 229
 230 static int smsdvb_set_frontend(struct dvb_frontend *fe,
 231                                struct dvb_frontend_parameters *fep)
 232 {
 233         struct smsdvb_client_t *client =
 234                 container_of(fe, struct smsdvb_client_t, frontend);
 235
 236         struct {
 237                 struct SmsMsgHdr_ST     Msg;
 238                 u32             Data[3];
 239         } Msg;
 240
 241         Msg.Msg.msgSrcId  = DVBT_BDA_CONTROL_MSG_ID;
 242         Msg.Msg.msgDstId  = HIF_TASK;
 243         Msg.Msg.msgFlags  = 0;
 244         Msg.Msg.msgType   = MSG_SMS_RF_TUNE_REQ;
 245         Msg.Msg.msgLength = sizeof(Msg);
 246         Msg.Data[0] = fep->frequency;
 247         Msg.Data[2] = 12000000;
 248
 249         printk(KERN_DEBUG "%s freq %d band %d\n", __func__,
 250                fep->frequency, fep->u.ofdm.bandwidth);
 251
 252         switch (fep->u.ofdm.bandwidth) {
 253         case BANDWIDTH_8_MHZ: Msg.Data[1] = BW_8_MHZ; break;
 254         case BANDWIDTH_7_MHZ: Msg.Data[1] = BW_7_MHZ; break;
 255         case BANDWIDTH_6_MHZ: Msg.Data[1] = BW_6_MHZ; break;
 256         case BANDWIDTH_AUTO: return -EOPNOTSUPP;
 257         default: return -EINVAL;
 258         }
 259
 260         return smsdvb_sendrequest_and_wait(client, &Msg, sizeof(Msg),
 261                                            &client->tune_done);
 262 }
 263
 264 static int smsdvb_get_frontend(struct dvb_frontend *fe,
 265                                struct dvb_frontend_parameters *fep)
 266 {
 267         struct smsdvb_client_t *client =
 268                 container_of(fe, struct smsdvb_client_t, frontend);
 269
 270         printk(KERN_DEBUG "%s\n", __func__);
 271
 272         /* todo: */
 273         memcpy(fep, &client->fe_params,
 274                sizeof(struct dvb_frontend_parameters));
 275         return 0;
 276 }
 277
 278 static void smsdvb_release(struct dvb_frontend *fe)
 279 {
 280         /* do nothing */
 281 }
 282
 283 static struct dvb_frontend_ops smsdvb_fe_ops = {
 284         .info = {
 285                 .name                   = "Siano Mobile Digital SMS10xx",
 286                 .type                   = FE_OFDM,
 287                 .frequency_min          = 44250000,
 288                 .frequency_max          = 867250000,
 289                 .frequency_stepsize     = 250000,
 290                 .caps = FE_CAN_INVERSION_AUTO |
 291                         FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
 292                         FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
 293                         FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 |
 294                         FE_CAN_QAM_AUTO | FE_CAN_TRANSMISSION_MODE_AUTO |
 295                         FE_CAN_GUARD_INTERVAL_AUTO |
 296                         FE_CAN_RECOVER |
 297                         FE_CAN_HIERARCHY_AUTO,
 298         },
 299
 300         .release = smsdvb_release,
 301
 302         .set_frontend = smsdvb_set_frontend,
 303         .get_frontend = smsdvb_get_frontend,
 304         .get_tune_settings = smsdvb_get_tune_settings,
 305
 306         .read_status = smsdvb_read_status,
 307         .read_ber = smsdvb_read_ber,
 308         .read_signal_strength = smsdvb_read_signal_strength,
 309         .read_snr = smsdvb_read_snr,
 310 };
 311
 312 int smsdvb_hotplug(struct smscore_device_t *coredev,
 313                    struct device *device, int arrival)
 314 {
 315         struct smsclient_params_t params;
 316         struct smsdvb_client_t *client;
 317         int rc;
 318
 319         /* device removal handled by onremove callback */
 320         if (!arrival)
 321                 return 0;
 322
 323         if (smscore_get_device_mode(coredev) != 4) {
 324                 printk(KERN_ERR "%sSMS Device mode is not set for "
 325                        "DVB operation.\n", __func__);
 326                 return 0;
 327         }
 328
 329         client = kzalloc(sizeof(struct smsdvb_client_t), GFP_KERNEL);
 330         if (!client) {
 331                 printk(KERN_INFO "%s kmalloc() failed\n", __func__);
 332                 return -ENOMEM;
 333         }
 334
 335         /* register dvb adapter */
 336         rc = dvb_register_adapter(&client->adapter, "Siano Digital Receiver",
 337                                   THIS_MODULE, device, adapter_nr);
 338         if (rc < 0) {
 339                 printk(KERN_ERR "%s dvb_register_adapter() failed %d\n",
 340                        __func__, rc);
 341                 goto adapter_error;
 342         }
 343
 344         /* init dvb demux */
 345         client->demux.dmx.capabilities = DMX_TS_FILTERING;
 346         client->demux.filternum = 32; /* todo: nova ??? */
 347         client->demux.feednum = 32;
 348         client->demux.start_feed = smsdvb_start_feed;
 349         client->demux.stop_feed = smsdvb_stop_feed;
 350
 351         rc = dvb_dmx_init(&client->demux);
 352         if (rc < 0) {
 353                 printk(KERN_ERR "%s dvb_dmx_init failed %d\n\n",
 354                        __func__, rc);
 355                 goto dvbdmx_error;
 356         }
 357
 358         /* init dmxdev */
 359         client->dmxdev.filternum = 32;
 360         client->dmxdev.demux = &client->demux.dmx;
 361         client->dmxdev.capabilities = 0;
 362
 363         rc = dvb_dmxdev_init(&client->dmxdev, &client->adapter);
 364         if (rc < 0) {
 365                 printk(KERN_ERR "%s dvb_dmxdev_init failed %d\n",
 366                        __func__, rc);
 367                 goto dmxdev_error;
 368         }
 369
 370         /* init and register frontend */
 371         memcpy(&client->frontend.ops, &smsdvb_fe_ops,
 372                sizeof(struct dvb_frontend_ops));
 373
 374         rc = dvb_register_frontend(&client->adapter, &client->frontend);
 375         if (rc < 0) {
 376                 printk(KERN_ERR "%s frontend registration failed %d\n",
 377                        __func__, rc);
 378                 goto frontend_error;
 379         }
 380
 381         params.initial_id = 1;
 382         params.data_type = MSG_SMS_DVBT_BDA_DATA;
 383         params.onresponse_handler = smsdvb_onresponse;
 384         params.onremove_handler = smsdvb_onremove;
 385         params.context = client;
 386
 387         rc = smscore_register_client(coredev, &params, &client->smsclient);
 388         if (rc < 0) {
 389                 printk(KERN_INFO "%s smscore_register_client() failed %d\n",
 390                        __func__, rc);
 391                 goto client_error;
 392         }
 393
 394         client->coredev = coredev;
 395
 396         init_completion(&client->tune_done);
 397         init_completion(&client->stat_done);
 398
 399         kmutex_lock(&g_smsdvb_clientslock);
 400
 401         list_add(&client->entry, &g_smsdvb_clients);
 402
 403         kmutex_unlock(&g_smsdvb_clientslock);
 404
 405         printk(KERN_INFO "%s success\n", __func__);
 406
 407         return 0;
 408
 409 client_error:
 410         dvb_unregister_frontend(&client->frontend);
 411
 412 frontend_error:
 413         dvb_dmxdev_release(&client->dmxdev);
 414
 415 dmxdev_error:
 416         dvb_dmx_release(&client->demux);
 417
 418 dvbdmx_error:
 419         dvb_unregister_adapter(&client->adapter);
 420
 421 adapter_error:
 422         kfree(client);
 423         return rc;
 424 }
 425
 426 int smsdvb_register(void)
 427 {
 428         int rc;
 429
 430         INIT_LIST_HEAD(&g_smsdvb_clients);
 431         kmutex_init(&g_smsdvb_clientslock);
 432
 433         rc = smscore_register_hotplug(smsdvb_hotplug);
 434
 435         printk(KERN_INFO "%s\n", __func__);
 436
 437         return rc;
 438 }
 439
 440 void smsdvb_unregister(void)
 441 {
 442         smscore_unregister_hotplug(smsdvb_hotplug);
 443
 444         kmutex_lock(&g_smsdvb_clientslock);
 445
 446         while (!list_empty(&g_smsdvb_clients))
 447                smsdvb_unregister_client(
 448                         (struct smsdvb_client_t *) g_smsdvb_clients.next);
 449
 450         kmutex_unlock(&g_smsdvb_clientslock);
 451 }