[mirror_ubuntu-bionic-kernel.git] / drivers / media / video / cx18 / cx18-dvb.c

/*
 *  cx18 functions for DVB support
 *
 *  Copyright (c) 2008 Steven Toth <stoth@linuxtv.org>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *
 *  GNU General Public License for more details.
 *
 *  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.
 */

#include "cx18-version.h"
#include "cx18-dvb.h"
#include "cx18-io.h"
#include "cx18-streams.h"
#include "cx18-queue.h"
#include "cx18-scb.h"
#include "cx18-cards.h"
#include "s5h1409.h"
#include "mxl5005s.h"

DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);

#define CX18_REG_DMUX_NUM_PORT_0_CONTROL 0xd5a000

static struct mxl5005s_config hauppauge_hvr1600_tuner = {
	.i2c_address     = 0xC6 >> 1,
	.if_freq         = IF_FREQ_5380000HZ,
	.xtal_freq       = CRYSTAL_FREQ_16000000HZ,
	.agc_mode        = MXL_SINGLE_AGC,
	.tracking_filter = MXL_TF_C_H,
	.rssi_enable     = MXL_RSSI_ENABLE,
	.cap_select      = MXL_CAP_SEL_ENABLE,
	.div_out         = MXL_DIV_OUT_4,
	.clock_out       = MXL_CLOCK_OUT_DISABLE,
	.output_load     = MXL5005S_IF_OUTPUT_LOAD_200_OHM,
	.top		 = MXL5005S_TOP_25P2,
	.mod_mode        = MXL_DIGITAL_MODE,
	.if_mode         = MXL_ZERO_IF,
	.AgcMasterByte   = 0x00,
};

static struct s5h1409_config hauppauge_hvr1600_config = {
	.demod_address = 0x32 >> 1,
	.output_mode   = S5H1409_SERIAL_OUTPUT,
	.gpio          = S5H1409_GPIO_ON,
	.qam_if        = 44000,
	.inversion     = S5H1409_INVERSION_OFF,
	.status_mode   = S5H1409_DEMODLOCKING,
	.mpeg_timing   = S5H1409_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK

};

static int dvb_register(struct cx18_stream *stream);

/* Kernel DVB framework calls this when the feed needs to start.
 * The CX18 framework should enable the transport DMA handling
 * and queue processing.
 */
static int cx18_dvb_start_feed(struct dvb_demux_feed *feed)
{
	struct dvb_demux *demux = feed->demux;
	struct cx18_stream *stream = (struct cx18_stream *) demux->priv;
	struct cx18 *cx = stream->cx;
	int ret;
	u32 v;

	CX18_DEBUG_INFO("Start feed: pid = 0x%x index = %d\n",
			feed->pid, feed->index);

	mutex_lock(&cx->serialize_lock);
	ret = cx18_init_on_first_open(cx);
	mutex_unlock(&cx->serialize_lock);
	if (ret) {
		CX18_ERR("Failed to initialize firmware starting DVB feed\n");
		return ret;
	}
	ret = -EINVAL;

	switch (cx->card->type) {
	case CX18_CARD_HVR_1600_ESMT:
	case CX18_CARD_HVR_1600_SAMSUNG:
		v = cx18_read_reg(cx, CX18_REG_DMUX_NUM_PORT_0_CONTROL);
		v |= 0x00400000; /* Serial Mode */
		v |= 0x00002000; /* Data Length - Byte */
		v |= 0x00010000; /* Error - Polarity */
		v |= 0x00020000; /* Error - Passthru */
		v |= 0x000c0000; /* Error - Ignore */
		cx18_write_reg(cx, v, CX18_REG_DMUX_NUM_PORT_0_CONTROL);
		break;

	default:
		/* Assumption - Parallel transport - Signalling
		 * undefined or default.
		 */
		break;
	}

	if (!demux->dmx.frontend)
		return -EINVAL;

	if (stream) {
		mutex_lock(&stream->dvb.feedlock);
		if (stream->dvb.feeding++ == 0) {
			CX18_DEBUG_INFO("Starting Transport DMA\n");
			ret = cx18_start_v4l2_encode_stream(stream);
			if (ret < 0) {
				CX18_DEBUG_INFO(
					"Failed to start Transport DMA\n");
				stream->dvb.feeding--;
			}
		} else
			ret = 0;
		mutex_unlock(&stream->dvb.feedlock);
	}

	return ret;
}

/* Kernel DVB framework calls this when the feed needs to stop. */
static int cx18_dvb_stop_feed(struct dvb_demux_feed *feed)
{
	struct dvb_demux *demux = feed->demux;
	struct cx18_stream *stream = (struct cx18_stream *)demux->priv;
	struct cx18 *cx = stream->cx;
	int ret = -EINVAL;

	CX18_DEBUG_INFO("Stop feed: pid = 0x%x index = %d\n",
			feed->pid, feed->index);

	if (stream) {
		mutex_lock(&stream->dvb.feedlock);
		if (--stream->dvb.feeding == 0) {
			CX18_DEBUG_INFO("Stopping Transport DMA\n");
			ret = cx18_stop_v4l2_encode_stream(stream, 0);
		} else
			ret = 0;
		mutex_unlock(&stream->dvb.feedlock);
	}

	return ret;
}

int cx18_dvb_register(struct cx18_stream *stream)
{
	struct cx18 *cx = stream->cx;
	struct cx18_dvb *dvb = &stream->dvb;
	struct dvb_adapter *dvb_adapter;
	struct dvb_demux *dvbdemux;
	struct dmx_demux *dmx;
	int ret;

	if (!dvb)
		return -EINVAL;

	ret = dvb_register_adapter(&dvb->dvb_adapter,
			CX18_DRIVER_NAME,
			THIS_MODULE, &cx->dev->dev, adapter_nr);
	if (ret < 0)
		goto err_out;

	dvb_adapter = &dvb->dvb_adapter;

	dvbdemux = &dvb->demux;

	dvbdemux->priv = (void *)stream;

	dvbdemux->filternum = 256;
	dvbdemux->feednum = 256;
	dvbdemux->start_feed = cx18_dvb_start_feed;
	dvbdemux->stop_feed = cx18_dvb_stop_feed;
	dvbdemux->dmx.capabilities = (DMX_TS_FILTERING |
		DMX_SECTION_FILTERING | DMX_MEMORY_BASED_FILTERING);
	ret = dvb_dmx_init(dvbdemux);
	if (ret < 0)
		goto err_dvb_unregister_adapter;

	dmx = &dvbdemux->dmx;

	dvb->hw_frontend.source = DMX_FRONTEND_0;
	dvb->mem_frontend.source = DMX_MEMORY_FE;
	dvb->dmxdev.filternum = 256;
	dvb->dmxdev.demux = dmx;

	ret = dvb_dmxdev_init(&dvb->dmxdev, dvb_adapter);
	if (ret < 0)
		goto err_dvb_dmx_release;

	ret = dmx->add_frontend(dmx, &dvb->hw_frontend);
	if (ret < 0)
		goto err_dvb_dmxdev_release;

	ret = dmx->add_frontend(dmx, &dvb->mem_frontend);
	if (ret < 0)
		goto err_remove_hw_frontend;

	ret = dmx->connect_frontend(dmx, &dvb->hw_frontend);
	if (ret < 0)
		goto err_remove_mem_frontend;

	ret = dvb_register(stream);
	if (ret < 0)
		goto err_disconnect_frontend;

	dvb_net_init(dvb_adapter, &dvb->dvbnet, dmx);

	CX18_INFO("DVB Frontend registered\n");
	mutex_init(&dvb->feedlock);
	dvb->enabled = 1;
	return ret;

err_disconnect_frontend:
	dmx->disconnect_frontend(dmx);
err_remove_mem_frontend:
	dmx->remove_frontend(dmx, &dvb->mem_frontend);
err_remove_hw_frontend:
	dmx->remove_frontend(dmx, &dvb->hw_frontend);
err_dvb_dmxdev_release:
	dvb_dmxdev_release(&dvb->dmxdev);
err_dvb_dmx_release:
	dvb_dmx_release(dvbdemux);
err_dvb_unregister_adapter:
	dvb_unregister_adapter(dvb_adapter);
err_out:
	return ret;
}

void cx18_dvb_unregister(struct cx18_stream *stream)
{
	struct cx18 *cx = stream->cx;
	struct cx18_dvb *dvb = &stream->dvb;
	struct dvb_adapter *dvb_adapter;
	struct dvb_demux *dvbdemux;
	struct dmx_demux *dmx;

	CX18_INFO("unregister DVB\n");

	dvb_adapter = &dvb->dvb_adapter;
	dvbdemux = &dvb->demux;
	dmx = &dvbdemux->dmx;

	dmx->close(dmx);
	dvb_net_release(&dvb->dvbnet);
	dmx->remove_frontend(dmx, &dvb->mem_frontend);
	dmx->remove_frontend(dmx, &dvb->hw_frontend);
	dvb_dmxdev_release(&dvb->dmxdev);
	dvb_dmx_release(dvbdemux);
	dvb_unregister_frontend(dvb->fe);
	dvb_frontend_detach(dvb->fe);
	dvb_unregister_adapter(dvb_adapter);
}

/* All the DVB attach calls go here, this function get's modified
 * for each new card. No other function in this file needs
 * to change.
 */
static int dvb_register(struct cx18_stream *stream)
{
	struct cx18_dvb *dvb = &stream->dvb;
	struct cx18 *cx = stream->cx;
	int ret = 0;

	switch (cx->card->type) {
	case CX18_CARD_HVR_1600_ESMT:
	case CX18_CARD_HVR_1600_SAMSUNG:
		dvb->fe = dvb_attach(s5h1409_attach,
			&hauppauge_hvr1600_config,
			&cx->i2c_adap[0]);
		if (dvb->fe != NULL) {
			dvb_attach(mxl5005s_attach, dvb->fe,
				&cx->i2c_adap[0],
				&hauppauge_hvr1600_tuner);
			ret = 0;
		}
		break;
	default:
		/* No Digital Tv Support */
		break;
	}

	if (dvb->fe == NULL) {
		CX18_ERR("frontend initialization failed\n");
		return -1;
	}

	ret = dvb_register_frontend(&dvb->dvb_adapter, dvb->fe);
	if (ret < 0) {
		if (dvb->fe->ops.release)
			dvb->fe->ops.release(dvb->fe);
		return ret;
	}

	return ret;
}

void cx18_dvb_work_handler(struct cx18 *cx)
{
	struct cx18_buffer *buf;
	struct cx18_stream *s = &cx->streams[CX18_ENC_STREAM_TYPE_TS];

	while ((buf = cx18_dequeue(s, &s->q_full)) != NULL) {
		if (s->dvb.enabled)
			dvb_dmx_swfilter(&s->dvb.demux, buf->buf,
					 buf->bytesused);

		cx18_enqueue(s, buf, &s->q_free);
		cx18_buf_sync_for_device(s, buf);
		if (s->handle == CX18_INVALID_TASK_HANDLE) /* FIXME: improve */
			continue;

		cx18_vapi(cx, CX18_CPU_DE_SET_MDL, 5, s->handle,
		       (void __iomem *)&cx->scb->cpu_mdl[buf->id] - cx->enc_mem,
		       1, buf->id, s->buf_size);
	}
}
Commit	Line	Data
1c1e45d1 HV	1	/*
	2	* cx18 functions for DVB support
	3	*
6d897616	4	* Copyright (c) 2008 Steven Toth <stoth@linuxtv.org>
1c1e45d1 HV	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	*
	15	* 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 "cx18-version.h"
	23	#include "cx18-dvb.h"
b1526421	24	#include "cx18-io.h"
1c1e45d1	25	#include "cx18-streams.h"
1d6782bd AW	26	#include "cx18-queue.h"
1d6782bd AW	27	#include "cx18-scb.h"
1c1e45d1 HV	28	#include "cx18-cards.h"
1c1e45d1 HV	29	#include "s5h1409.h"
67129471	30	#include "mxl5005s.h"
1c1e45d1 HV	31
	32	DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
	33
	34	#define CX18_REG_DMUX_NUM_PORT_0_CONTROL 0xd5a000
	35
67129471 ST	36	static struct mxl5005s_config hauppauge_hvr1600_tuner = {
	37	.i2c_address = 0xC6 >> 1,
	38	.if_freq = IF_FREQ_5380000HZ,
	39	.xtal_freq = CRYSTAL_FREQ_16000000HZ,
	40	.agc_mode = MXL_SINGLE_AGC,
	41	.tracking_filter = MXL_TF_C_H,
	42	.rssi_enable = MXL_RSSI_ENABLE,
	43	.cap_select = MXL_CAP_SEL_ENABLE,
	44	.div_out = MXL_DIV_OUT_4,
	45	.clock_out = MXL_CLOCK_OUT_DISABLE,
	46	.output_load = MXL5005S_IF_OUTPUT_LOAD_200_OHM,
	47	.top = MXL5005S_TOP_25P2,
	48	.mod_mode = MXL_DIGITAL_MODE,
	49	.if_mode = MXL_ZERO_IF,
	50	.AgcMasterByte = 0x00,
1c1e45d1 HV	51	};
	52
	53	static struct s5h1409_config hauppauge_hvr1600_config = {
	54	.demod_address = 0x32 >> 1,
	55	.output_mode = S5H1409_SERIAL_OUTPUT,
	56	.gpio = S5H1409_GPIO_ON,
	57	.qam_if = 44000,
	58	.inversion = S5H1409_INVERSION_OFF,
	59	.status_mode = S5H1409_DEMODLOCKING,
	60	.mpeg_timing = S5H1409_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK
	61
	62	};
1c1e45d1 HV	63
	64	static int dvb_register(struct cx18_stream *stream);
	65
	66	/* Kernel DVB framework calls this when the feed needs to start.
	67	* The CX18 framework should enable the transport DMA handling
	68	* and queue processing.
	69	*/
	70	static int cx18_dvb_start_feed(struct dvb_demux_feed *feed)
	71	{
	72	struct dvb_demux *demux = feed->demux;
	73	struct cx18_stream stream = (struct cx18_stream ) demux->priv;
	74	struct cx18 *cx = stream->cx;
08cf7b2e	75	int ret;
1c1e45d1 HV	76	u32 v;
	77
	78	CX18_DEBUG_INFO("Start feed: pid = 0x%x index = %d\n",
	79	feed->pid, feed->index);
08cf7b2e AW	80
	81	mutex_lock(&cx->serialize_lock);
	82	ret = cx18_init_on_first_open(cx);
	83	mutex_unlock(&cx->serialize_lock);
	84	if (ret) {
	85	CX18_ERR("Failed to initialize firmware starting DVB feed\n");
	86	return ret;
	87	}
	88	ret = -EINVAL;
	89
1c1e45d1 HV	90	switch (cx->card->type) {
	91	case CX18_CARD_HVR_1600_ESMT:
	92	case CX18_CARD_HVR_1600_SAMSUNG:
b1526421	93	v = cx18_read_reg(cx, CX18_REG_DMUX_NUM_PORT_0_CONTROL);
1c1e45d1 HV	94	v \|= 0x00400000; /* Serial Mode */
	95	v \|= 0x00002000; /* Data Length - Byte */
	96	v \|= 0x00010000; /* Error - Polarity */
	97	v \|= 0x00020000; /* Error - Passthru */
	98	v \|= 0x000c0000; /* Error - Ignore */
b1526421	99	cx18_write_reg(cx, v, CX18_REG_DMUX_NUM_PORT_0_CONTROL);
1c1e45d1 HV	100	break;
	101
	102	default:
	103	/* Assumption - Parallel transport - Signalling
	104	* undefined or default.
	105	*/
	106	break;
	107	}
	108
	109	if (!demux->dmx.frontend)
	110	return -EINVAL;
	111
	112	if (stream) {
	113	mutex_lock(&stream->dvb.feedlock);
	114	if (stream->dvb.feeding++ == 0) {
	115	CX18_DEBUG_INFO("Starting Transport DMA\n");
	116	ret = cx18_start_v4l2_encode_stream(stream);
08cf7b2e AW	117	if (ret < 0) {
	118	CX18_DEBUG_INFO(
	119	"Failed to start Transport DMA\n");
	120	stream->dvb.feeding--;
	121	}
1c1e45d1 HV	122	} else
	123	ret = 0;
	124	mutex_unlock(&stream->dvb.feedlock);
	125	}
	126
	127	return ret;
	128	}
	129
	130	/* Kernel DVB framework calls this when the feed needs to stop. */
	131	static int cx18_dvb_stop_feed(struct dvb_demux_feed *feed)
	132	{
	133	struct dvb_demux *demux = feed->demux;
	134	struct cx18_stream stream = (struct cx18_stream )demux->priv;
	135	struct cx18 *cx = stream->cx;
	136	int ret = -EINVAL;
	137
	138	CX18_DEBUG_INFO("Stop feed: pid = 0x%x index = %d\n",
	139	feed->pid, feed->index);
	140
	141	if (stream) {
	142	mutex_lock(&stream->dvb.feedlock);
	143	if (--stream->dvb.feeding == 0) {
	144	CX18_DEBUG_INFO("Stopping Transport DMA\n");
	145	ret = cx18_stop_v4l2_encode_stream(stream, 0);
	146	} else
	147	ret = 0;
	148	mutex_unlock(&stream->dvb.feedlock);
	149	}
	150
	151	return ret;
	152	}
	153
	154	int cx18_dvb_register(struct cx18_stream *stream)
	155	{
	156	struct cx18 *cx = stream->cx;
	157	struct cx18_dvb *dvb = &stream->dvb;
	158	struct dvb_adapter *dvb_adapter;
	159	struct dvb_demux *dvbdemux;
	160	struct dmx_demux *dmx;
	161	int ret;
	162
	163	if (!dvb)
	164	return -EINVAL;
	165
	166	ret = dvb_register_adapter(&dvb->dvb_adapter,
	167	CX18_DRIVER_NAME,
	168	THIS_MODULE, &cx->dev->dev, adapter_nr);
	169	if (ret < 0)
	170	goto err_out;
	171
	172	dvb_adapter = &dvb->dvb_adapter;
	173
	174	dvbdemux = &dvb->demux;
	175
	176	dvbdemux->priv = (void *)stream;
	177
	178	dvbdemux->filternum = 256;
	179	dvbdemux->feednum = 256;
	180	dvbdemux->start_feed = cx18_dvb_start_feed;
	181	dvbdemux->stop_feed = cx18_dvb_stop_feed;
	182	dvbdemux->dmx.capabilities = (DMX_TS_FILTERING \|
	183	DMX_SECTION_FILTERING \| DMX_MEMORY_BASED_FILTERING);
	184	ret = dvb_dmx_init(dvbdemux);
	185	if (ret < 0)
186	goto err_dvb_unregister_adapter;
187
188	dmx = &dvbdemux->dmx;
189
190	dvb->hw_frontend.source = DMX_FRONTEND_0;
191	dvb->mem_frontend.source = DMX_MEMORY_FE;
192	dvb->dmxdev.filternum = 256;
193	dvb->dmxdev.demux = dmx;
194
195	ret = dvb_dmxdev_init(&dvb->dmxdev, dvb_adapter);
196	if (ret < 0)
197	goto err_dvb_dmx_release;
198
199	ret = dmx->add_frontend(dmx, &dvb->hw_frontend);
200	if (ret < 0)
201	goto err_dvb_dmxdev_release;
202
203	ret = dmx->add_frontend(dmx, &dvb->mem_frontend);
204	if (ret < 0)
205	goto err_remove_hw_frontend;
206
207	ret = dmx->connect_frontend(dmx, &dvb->hw_frontend);
208	if (ret < 0)
209	goto err_remove_mem_frontend;
210
211	ret = dvb_register(stream);
212	if (ret < 0)
213	goto err_disconnect_frontend;
214
215	dvb_net_init(dvb_adapter, &dvb->dvbnet, dmx);
216
217	CX18_INFO("DVB Frontend registered\n");
218	mutex_init(&dvb->feedlock);
219	dvb->enabled = 1;
220	return ret;
221
222	err_disconnect_frontend:
223	dmx->disconnect_frontend(dmx);
224	err_remove_mem_frontend:
225	dmx->remove_frontend(dmx, &dvb->mem_frontend);
226	err_remove_hw_frontend:
227	dmx->remove_frontend(dmx, &dvb->hw_frontend);
228	err_dvb_dmxdev_release:
229	dvb_dmxdev_release(&dvb->dmxdev);
230	err_dvb_dmx_release:
231	dvb_dmx_release(dvbdemux);
232	err_dvb_unregister_adapter:
233	dvb_unregister_adapter(dvb_adapter);
234	err_out:
235	return ret;
236	}
237
238	void cx18_dvb_unregister(struct cx18_stream *stream)
239	{
240	struct cx18 *cx = stream->cx;
241	struct cx18_dvb *dvb = &stream->dvb;
242	struct dvb_adapter *dvb_adapter;
243	struct dvb_demux *dvbdemux;
244	struct dmx_demux *dmx;
245
246	CX18_INFO("unregister DVB\n");
247
248	dvb_adapter = &dvb->dvb_adapter;
249	dvbdemux = &dvb->demux;
250	dmx = &dvbdemux->dmx;
251
252	dmx->close(dmx);
253	dvb_net_release(&dvb->dvbnet);
254	dmx->remove_frontend(dmx, &dvb->mem_frontend);
255	dmx->remove_frontend(dmx, &dvb->hw_frontend);
256	dvb_dmxdev_release(&dvb->dmxdev);
257	dvb_dmx_release(dvbdemux);
258	dvb_unregister_frontend(dvb->fe);
259	dvb_frontend_detach(dvb->fe);
260	dvb_unregister_adapter(dvb_adapter);
261	}
262
263	/* All the DVB attach calls go here, this function get's modified
264	* for each new card. No other function in this file needs
265	* to change.
266	*/
267	static int dvb_register(struct cx18_stream *stream)
268	{
269	struct cx18_dvb *dvb = &stream->dvb;
270	struct cx18 *cx = stream->cx;
271	int ret = 0;
272
273	switch (cx->card->type) {
1c1e45d1 HV	274	case CX18_CARD_HVR_1600_ESMT:
	275	case CX18_CARD_HVR_1600_SAMSUNG:
	276	dvb->fe = dvb_attach(s5h1409_attach,
	277	&hauppauge_hvr1600_config,
	278	&cx->i2c_adap[0]);
	279	if (dvb->fe != NULL) {
67129471 ST	280	dvb_attach(mxl5005s_attach, dvb->fe,
	281	&cx->i2c_adap[0],
	282	&hauppauge_hvr1600_tuner);
1c1e45d1 HV	283	ret = 0;
	284	}
	285	break;
1c1e45d1 HV	286	default:
	287	/* No Digital Tv Support */
	288	break;
	289	}
	290
	291	if (dvb->fe == NULL) {
	292	CX18_ERR("frontend initialization failed\n");
	293	return -1;
	294	}
	295
	296	ret = dvb_register_frontend(&dvb->dvb_adapter, dvb->fe);
	297	if (ret < 0) {
	298	if (dvb->fe->ops.release)
	299	dvb->fe->ops.release(dvb->fe);
	300	return ret;
	301	}
	302
	303	return ret;
	304	}
1d6782bd AW	305
	306	void cx18_dvb_work_handler(struct cx18 *cx)
	307	{
	308	struct cx18_buffer *buf;
	309	struct cx18_stream *s = &cx->streams[CX18_ENC_STREAM_TYPE_TS];
	310
	311	while ((buf = cx18_dequeue(s, &s->q_full)) != NULL) {
	312	if (s->dvb.enabled)
	313	dvb_dmx_swfilter(&s->dvb.demux, buf->buf,
	314	buf->bytesused);
	315
	316	cx18_enqueue(s, buf, &s->q_free);
	317	cx18_buf_sync_for_device(s, buf);
	318	if (s->handle == CX18_INVALID_TASK_HANDLE) /* FIXME: improve */
	319	continue;
	320
	321	cx18_vapi(cx, CX18_CPU_DE_SET_MDL, 5, s->handle,
	322	(void __iomem *)&cx->scb->cpu_mdl[buf->id] - cx->enc_mem,
	323	1, buf->id, s->buf_size);
	324	}
	325	}