smsdvb.c 10.6 KB
Newer Older
1 2 3
/*
 *  Driver for the Siano SMS10xx USB dongle
 *
4 5 6
 *  author: Anatoly Greenblat
 *
 *  Copyright (c), 2005-2008 Siano Mobile Silicon, Inc.
7 8
 *
 *  This program is free software; you can redistribute it and/or modify
9 10
 *  it under the terms of the GNU General Public License version 3 as
 *  published by the Free Software Foundation;
11
 *
12 13
 *  Software distributed under the License is distributed on an "AS IS"
 *  basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.
14
 *
15
 *  See the GNU General Public License for more details.
16 17 18 19 20 21
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

22 23 24 25 26
#include <linux/module.h>
#include <linux/init.h>

#include "smscoreapi.h"

27 28
DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);

29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81
struct list_head g_smsdvb_clients;
kmutex_t g_smsdvb_clientslock;

int smsdvb_onresponse(void *context, smscore_buffer_t *cb)
{
	smsdvb_client_t *client = (smsdvb_client_t *) context;
	SmsMsgHdr_ST *phdr = (SmsMsgHdr_ST *)(((u8*) cb->p) + cb->offset);

	switch(phdr->msgType)
	{
		case MSG_SMS_DVBT_BDA_DATA:
			dvb_dmx_swfilter(&client->demux, (u8*)(phdr + 1), cb->size - sizeof(SmsMsgHdr_ST));
			break;

		case MSG_SMS_RF_TUNE_RES:
			complete(&client->tune_done);
			break;

		case MSG_SMS_GET_STATISTICS_RES:
		{
			SmsMsgStatisticsInfo_ST* p = (SmsMsgStatisticsInfo_ST*)(phdr + 1);

			if (p->Stat.IsDemodLocked)
			{
				client->fe_status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK;
				client->fe_snr = p->Stat.SNR;
				client->fe_ber = p->Stat.BER;

				if (p->Stat.InBandPwr < -95)
					client->fe_signal_strength = 0;
				else if (p->Stat.InBandPwr > -29)
					client->fe_signal_strength = 100;
				else
					client->fe_signal_strength = (p->Stat.InBandPwr + 95) * 3 / 2;
			}
			else
			{
				client->fe_status = 0;
				client->fe_snr =
				client->fe_ber =
				client->fe_signal_strength = 0;
			}

			complete(&client->stat_done);
			break;
		}
	}

	smscore_putbuffer(client->coredev, cb);

	return 0;
}

82
void smsdvb_unregister_client(smsdvb_client_t *client)
83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109
{
	// must be called under clientslock

	list_del(&client->entry);

	smscore_unregister_client(client->smsclient);
	dvb_unregister_frontend(&client->frontend);
	dvb_dmxdev_release(&client->dmxdev);
	dvb_dmx_release(&client->demux);
	dvb_unregister_adapter(&client->adapter);
	kfree(client);
}

void smsdvb_onremove(void *context)
{
	kmutex_lock(&g_smsdvb_clientslock);

	smsdvb_unregister_client((smsdvb_client_t*) context);

	kmutex_unlock(&g_smsdvb_clientslock);
}

static int smsdvb_start_feed(struct dvb_demux_feed *feed)
{
	smsdvb_client_t *client = container_of(feed->demux, smsdvb_client_t, demux);
	SmsMsgData_ST PidMsg;

110
	printk("%s add pid %d(%x)\n", __func__, feed->pid, feed->pid);
111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126

	PidMsg.xMsgHeader.msgSrcId = DVBT_BDA_CONTROL_MSG_ID;
	PidMsg.xMsgHeader.msgDstId = HIF_TASK;
	PidMsg.xMsgHeader.msgFlags = 0;
	PidMsg.xMsgHeader.msgType  = MSG_SMS_ADD_PID_FILTER_REQ;
	PidMsg.xMsgHeader.msgLength = sizeof(PidMsg);
	PidMsg.msgData[0] = feed->pid;

	return smsclient_sendrequest(client->smsclient, &PidMsg, sizeof(PidMsg));
}

static int smsdvb_stop_feed(struct dvb_demux_feed *feed)
{
	smsdvb_client_t *client = container_of(feed->demux, smsdvb_client_t, demux);
	SmsMsgData_ST PidMsg;

127
	printk("%s remove pid %d(%x)\n", __func__, feed->pid, feed->pid);
128 129 130 131 132 133 134 135 136 137 138

	PidMsg.xMsgHeader.msgSrcId = DVBT_BDA_CONTROL_MSG_ID;
	PidMsg.xMsgHeader.msgDstId = HIF_TASK;
	PidMsg.xMsgHeader.msgFlags = 0;
	PidMsg.xMsgHeader.msgType  = MSG_SMS_REMOVE_PID_FILTER_REQ;
	PidMsg.xMsgHeader.msgLength = sizeof(PidMsg);
	PidMsg.msgData[0] = feed->pid;

	return smsclient_sendrequest(client->smsclient, &PidMsg, sizeof(PidMsg));
}

139 140 141
static int smsdvb_sendrequest_and_wait(smsdvb_client_t *client,
					void *buffer, size_t size,
					struct completion *completion)
142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201
{
	int rc = smsclient_sendrequest(client->smsclient, buffer, size);
	if (rc < 0)
		return rc;

	return wait_for_completion_timeout(completion, msecs_to_jiffies(2000)) ? 0 : -ETIME;
}

static int smsdvb_send_statistics_request(smsdvb_client_t *client)
{
	SmsMsgHdr_ST Msg = { MSG_SMS_GET_STATISTICS_REQ, DVBT_BDA_CONTROL_MSG_ID, HIF_TASK, sizeof(SmsMsgHdr_ST), 0 };
	return smsdvb_sendrequest_and_wait(client, &Msg, sizeof(Msg), &client->stat_done);
}

static int smsdvb_read_status(struct dvb_frontend *fe, fe_status_t *stat)
{
	smsdvb_client_t *client = container_of(fe, smsdvb_client_t, frontend);
	int rc = smsdvb_send_statistics_request(client);

	if (!rc)
		*stat = client->fe_status;

	return rc;
}

static int smsdvb_read_ber(struct dvb_frontend *fe, u32 *ber)
{
	smsdvb_client_t *client = container_of(fe, smsdvb_client_t, frontend);
	int rc = smsdvb_send_statistics_request(client);

	if (!rc)
		*ber = client->fe_ber;

	return rc;
}

static int smsdvb_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
{
	smsdvb_client_t *client = container_of(fe, smsdvb_client_t, frontend);
	int rc = smsdvb_send_statistics_request(client);

	if (!rc)
		*strength = client->fe_signal_strength;

	return rc;
}

static int smsdvb_read_snr(struct dvb_frontend *fe, u16 *snr)
{
	smsdvb_client_t *client = container_of(fe, smsdvb_client_t, frontend);
	int rc = smsdvb_send_statistics_request(client);

	if (!rc)
		*snr = client->fe_snr;

	return rc;
}

static int smsdvb_get_tune_settings(struct dvb_frontend *fe, struct dvb_frontend_tune_settings *tune)
{
202
	printk("%s\n", __func__);
203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227

	tune->min_delay_ms = 400;
	tune->step_size = 250000;
	tune->max_drift = 0;
	return 0;
}

static int smsdvb_set_frontend(struct dvb_frontend *fe, struct dvb_frontend_parameters *fep)
{
	smsdvb_client_t *client = container_of(fe, smsdvb_client_t, frontend);

	struct
	{
		SmsMsgHdr_ST	Msg;
		u32				Data[3];
	} Msg;

	Msg.Msg.msgSrcId  = DVBT_BDA_CONTROL_MSG_ID;
	Msg.Msg.msgDstId  = HIF_TASK;
	Msg.Msg.msgFlags  = 0;
	Msg.Msg.msgType   = MSG_SMS_RF_TUNE_REQ;
	Msg.Msg.msgLength = sizeof(Msg);
	Msg.Data[0] = fep->frequency;
	Msg.Data[2] = 12000000;

228
	printk("%s freq %d band %d\n", __func__, fep->frequency, fep->u.ofdm.bandwidth);
229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246

	switch(fep->u.ofdm.bandwidth)
	{
		case BANDWIDTH_8_MHZ: Msg.Data[1] = BW_8_MHZ; break;
		case BANDWIDTH_7_MHZ: Msg.Data[1] = BW_7_MHZ; break;
		case BANDWIDTH_6_MHZ: Msg.Data[1] = BW_6_MHZ; break;
//		case BANDWIDTH_5_MHZ: Msg.Data[1] = BW_5_MHZ; break;
		case BANDWIDTH_AUTO: return -EOPNOTSUPP;
		default: return -EINVAL;
	}

	return smsdvb_sendrequest_and_wait(client, &Msg, sizeof(Msg), &client->tune_done);
}

static int smsdvb_get_frontend(struct dvb_frontend *fe, struct dvb_frontend_parameters *fep)
{
	smsdvb_client_t *client = container_of(fe, smsdvb_client_t, frontend);

247
	printk("%s\n", __func__);
248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287

	// todo:
	memcpy(fep, &client->fe_params, sizeof(struct dvb_frontend_parameters));
	return 0;
}

static void smsdvb_release(struct dvb_frontend *fe)
{
	// do nothing
}

static struct dvb_frontend_ops smsdvb_fe_ops = {
	.info = {
		.name				= "Siano Mobile Digital SMS10xx",
		.type				= FE_OFDM,
		.frequency_min		= 44250000,
		.frequency_max		= 867250000,
		.frequency_stepsize	= 250000,
		.caps = FE_CAN_INVERSION_AUTO |
				FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
				FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
				FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
				FE_CAN_TRANSMISSION_MODE_AUTO |
				FE_CAN_GUARD_INTERVAL_AUTO |
				FE_CAN_RECOVER |
				FE_CAN_HIERARCHY_AUTO,
	},

	.release = smsdvb_release,

	.set_frontend = smsdvb_set_frontend,
	.get_frontend = smsdvb_get_frontend,
	.get_tune_settings = smsdvb_get_tune_settings,

	.read_status = smsdvb_read_status,
	.read_ber = smsdvb_read_ber,
	.read_signal_strength = smsdvb_read_signal_strength,
	.read_snr = smsdvb_read_snr,
};

288 289
int smsdvb_hotplug(smscore_device_t *coredev, struct device *device,
		    int arrival)
290 291
{
	smsclient_params_t params;
292
	smsdvb_client_t *client;
293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308
	int rc;

	// device removal handled by onremove callback
	if (!arrival)
		return 0;

	if (smscore_get_device_mode(coredev) != 4)
	{
		rc = smscore_set_device_mode(coredev, 4);
		if (rc < 0)
			return rc;
	}

	client = kzalloc(sizeof(smsdvb_client_t), GFP_KERNEL);
	if (!client)
	{
309
		printk(KERN_INFO "%s kmalloc() failed\n", __func__);
310 311 312 313
		return -ENOMEM;
	}

	// register dvb adapter
314
	rc = dvb_register_adapter(&client->adapter, "Siano Digital Receiver", THIS_MODULE, device, adapter_nr);
315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330
	if (rc < 0)
	{
		printk("%s dvb_register_adapter() failed %d\n", __func__, rc);
		goto adapter_error;
	}

	// init dvb demux
	client->demux.dmx.capabilities = DMX_TS_FILTERING;
	client->demux.filternum = 32; // todo: nova ???
	client->demux.feednum = 32;
	client->demux.start_feed = smsdvb_start_feed;
	client->demux.stop_feed = smsdvb_stop_feed;

	rc = dvb_dmx_init(&client->demux);
	if (rc < 0)
	{
331
		printk("%s dvb_dmx_init failed %d\n\n", __func__, rc);
332 333 334 335 336 337 338 339 340 341 342
		goto dvbdmx_error;
	}

	// init dmxdev
	client->dmxdev.filternum = 32;
	client->dmxdev.demux = &client->demux.dmx;
	client->dmxdev.capabilities = 0;

	rc = dvb_dmxdev_init(&client->dmxdev, &client->adapter);
	if (rc < 0)
	{
343
		printk("%s dvb_dmxdev_init failed %d\n", __func__, rc);
344 345 346 347 348 349 350 351 352
		goto dmxdev_error;
	}

	// init and register frontend
	memcpy(&client->frontend.ops, &smsdvb_fe_ops, sizeof(struct dvb_frontend_ops));

	rc = dvb_register_frontend(&client->adapter, &client->frontend);
	if (rc < 0)
	{
353
		printk("%s frontend registration failed %d\n", __func__, rc);
354 355 356 357 358 359 360 361 362 363 364 365
		goto frontend_error;
	}

	params.initial_id = 0;
	params.data_type = MSG_SMS_DVBT_BDA_DATA;
	params.onresponse_handler = smsdvb_onresponse;
	params.onremove_handler = smsdvb_onremove;
	params.context = client;

	rc = smscore_register_client(coredev, &params, &client->smsclient);
	if (rc < 0)
	{
366
		printk(KERN_INFO "%s smscore_register_client() failed %d\n", __func__, rc);
367 368 369 370 371 372 373 374 375 376 377 378 379 380
		goto client_error;
	}

	client->coredev = coredev;

	init_completion(&client->tune_done);
	init_completion(&client->stat_done);

	kmutex_lock(&g_smsdvb_clientslock);

	list_add(&client->entry, &g_smsdvb_clients);

	kmutex_unlock(&g_smsdvb_clientslock);

381
	printk(KERN_INFO "%s success\n", __func__);
382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401

	return 0;

client_error:
	dvb_unregister_frontend(&client->frontend);

frontend_error:
	dvb_dmxdev_release(&client->dmxdev);

dmxdev_error:
	dvb_dmx_release(&client->demux);

dvbdmx_error:
	dvb_unregister_adapter(&client->adapter);

adapter_error:
	kfree(client);
	return rc;
}

402 403 404 405 406 407 408 409 410
int smsdvb_register(void)
{
	int rc;

	INIT_LIST_HEAD(&g_smsdvb_clients);
	kmutex_init(&g_smsdvb_clientslock);

	rc = smscore_register_hotplug(smsdvb_hotplug);

411
	printk(KERN_INFO "%s\n", __func__);
412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428

	return rc;
}

void smsdvb_unregister(void)
{
	smscore_unregister_hotplug(smsdvb_hotplug);

	kmutex_lock(&g_smsdvb_clientslock);

	while (!list_empty(&g_smsdvb_clients))
		smsdvb_unregister_client((smsdvb_client_t*) g_smsdvb_clients.next);

	kmutex_unlock(&g_smsdvb_clientslock);

}