xref: /openbmc/linux/drivers/media/pci/cx18/cx18-dvb.c (revision 12eb4683)
1 /*
2  *  cx18 functions for DVB support
3  *
4  *  Copyright (c) 2008 Steven Toth <stoth@linuxtv.org>
5  *  Copyright (C) 2008  Andy Walls <awalls@md.metrocast.net>
6  *
7  *  This program is free software; you can redistribute it and/or modify
8  *  it under the terms of the GNU General Public License as published by
9  *  the Free Software Foundation; either version 2 of the License, or
10  *  (at your option) any later version.
11  *
12  *  This program is distributed in the hope that it will be useful,
13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  *
16  *  GNU General Public License for more details.
17  *
18  *  You should have received a copy of the GNU General Public License
19  *  along with this program; if not, write to the Free Software
20  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21  */
22 
23 #include "cx18-version.h"
24 #include "cx18-dvb.h"
25 #include "cx18-io.h"
26 #include "cx18-queue.h"
27 #include "cx18-streams.h"
28 #include "cx18-cards.h"
29 #include "cx18-gpio.h"
30 #include "s5h1409.h"
31 #include "mxl5005s.h"
32 #include "s5h1411.h"
33 #include "tda18271.h"
34 #include "zl10353.h"
35 
36 #include <linux/firmware.h>
37 #include "mt352.h"
38 #include "mt352_priv.h"
39 #include "tuner-xc2028.h"
40 
41 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
42 
43 #define FWFILE "dvb-cx18-mpc718-mt352.fw"
44 
45 #define CX18_REG_DMUX_NUM_PORT_0_CONTROL 0xd5a000
46 #define CX18_CLOCK_ENABLE2		 0xc71024
47 #define CX18_DMUX_CLK_MASK		 0x0080
48 
49 /*
50  * CX18_CARD_HVR_1600_ESMT
51  * CX18_CARD_HVR_1600_SAMSUNG
52  */
53 
54 static struct mxl5005s_config hauppauge_hvr1600_tuner = {
55 	.i2c_address     = 0xC6 >> 1,
56 	.if_freq         = IF_FREQ_5380000HZ,
57 	.xtal_freq       = CRYSTAL_FREQ_16000000HZ,
58 	.agc_mode        = MXL_SINGLE_AGC,
59 	.tracking_filter = MXL_TF_C_H,
60 	.rssi_enable     = MXL_RSSI_ENABLE,
61 	.cap_select      = MXL_CAP_SEL_ENABLE,
62 	.div_out         = MXL_DIV_OUT_4,
63 	.clock_out       = MXL_CLOCK_OUT_DISABLE,
64 	.output_load     = MXL5005S_IF_OUTPUT_LOAD_200_OHM,
65 	.top		 = MXL5005S_TOP_25P2,
66 	.mod_mode        = MXL_DIGITAL_MODE,
67 	.if_mode         = MXL_ZERO_IF,
68 	.qam_gain        = 0x02,
69 	.AgcMasterByte   = 0x00,
70 };
71 
72 static struct s5h1409_config hauppauge_hvr1600_config = {
73 	.demod_address = 0x32 >> 1,
74 	.output_mode   = S5H1409_SERIAL_OUTPUT,
75 	.gpio          = S5H1409_GPIO_ON,
76 	.qam_if        = 44000,
77 	.inversion     = S5H1409_INVERSION_OFF,
78 	.status_mode   = S5H1409_DEMODLOCKING,
79 	.mpeg_timing   = S5H1409_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK,
80 	.hvr1600_opt   = S5H1409_HVR1600_OPTIMIZE
81 };
82 
83 /*
84  * CX18_CARD_HVR_1600_S5H1411
85  */
86 static struct s5h1411_config hcw_s5h1411_config = {
87 	.output_mode   = S5H1411_SERIAL_OUTPUT,
88 	.gpio          = S5H1411_GPIO_OFF,
89 	.vsb_if        = S5H1411_IF_44000,
90 	.qam_if        = S5H1411_IF_4000,
91 	.inversion     = S5H1411_INVERSION_ON,
92 	.status_mode   = S5H1411_DEMODLOCKING,
93 	.mpeg_timing   = S5H1411_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK,
94 };
95 
96 static struct tda18271_std_map hauppauge_tda18271_std_map = {
97 	.atsc_6   = { .if_freq = 5380, .agc_mode = 3, .std = 3,
98 		      .if_lvl = 6, .rfagc_top = 0x37 },
99 	.qam_6    = { .if_freq = 4000, .agc_mode = 3, .std = 0,
100 		      .if_lvl = 6, .rfagc_top = 0x37 },
101 };
102 
103 static struct tda18271_config hauppauge_tda18271_config = {
104 	.std_map = &hauppauge_tda18271_std_map,
105 	.gate    = TDA18271_GATE_DIGITAL,
106 	.output_opt = TDA18271_OUTPUT_LT_OFF,
107 };
108 
109 /*
110  * CX18_CARD_LEADTEK_DVR3100H
111  */
112 /* Information/confirmation of proper config values provided by Terry Wu */
113 static struct zl10353_config leadtek_dvr3100h_demod = {
114 	.demod_address         = 0x1e >> 1, /* Datasheet suggested straps */
115 	.if2                   = 45600,     /* 4.560 MHz IF from the XC3028 */
116 	.parallel_ts           = 1,         /* Not a serial TS */
117 	.no_tuner              = 1,         /* XC3028 is not behind the gate */
118 	.disable_i2c_gate_ctrl = 1,         /* Disable the I2C gate */
119 };
120 
121 /*
122  * CX18_CARD_YUAN_MPC718
123  */
124 /*
125  * Due to
126  *
127  * 1. an absence of information on how to prgram the MT352
128  * 2. the Linux mt352 module pushing MT352 initialzation off onto us here
129  *
130  * We have to use an init sequence that *you* must extract from the Windows
131  * driver (yuanrap.sys) and which we load as a firmware.
132  *
133  * If someone can provide me with a Zarlink MT352 (Intel CE6352?) Design Manual
134  * with chip programming details, then I can remove this annoyance.
135  */
136 static int yuan_mpc718_mt352_reqfw(struct cx18_stream *stream,
137 				   const struct firmware **fw)
138 {
139 	struct cx18 *cx = stream->cx;
140 	const char *fn = FWFILE;
141 	int ret;
142 
143 	ret = request_firmware(fw, fn, &cx->pci_dev->dev);
144 	if (ret)
145 		CX18_ERR("Unable to open firmware file %s\n", fn);
146 	else {
147 		size_t sz = (*fw)->size;
148 		if (sz < 2 || sz > 64 || (sz % 2) != 0) {
149 			CX18_ERR("Firmware %s has a bad size: %lu bytes\n",
150 				 fn, (unsigned long) sz);
151 			ret = -EILSEQ;
152 			release_firmware(*fw);
153 			*fw = NULL;
154 		}
155 	}
156 
157 	if (ret) {
158 		CX18_ERR("The MPC718 board variant with the MT352 DVB-T"
159 			  "demodualtor will not work without it\n");
160 		CX18_ERR("Run 'linux/Documentation/dvb/get_dvb_firmware "
161 			  "mpc718' if you need the firmware\n");
162 	}
163 	return ret;
164 }
165 
166 static int yuan_mpc718_mt352_init(struct dvb_frontend *fe)
167 {
168 	struct cx18_dvb *dvb = container_of(fe->dvb,
169 					    struct cx18_dvb, dvb_adapter);
170 	struct cx18_stream *stream = dvb->stream;
171 	const struct firmware *fw = NULL;
172 	int ret;
173 	int i;
174 	u8 buf[3];
175 
176 	ret = yuan_mpc718_mt352_reqfw(stream, &fw);
177 	if (ret)
178 		return ret;
179 
180 	/* Loop through all the register-value pairs in the firmware file */
181 	for (i = 0; i < fw->size; i += 2) {
182 		buf[0] = fw->data[i];
183 		/* Intercept a few registers we want to set ourselves */
184 		switch (buf[0]) {
185 		case TRL_NOMINAL_RATE_0:
186 			/* Set our custom OFDM bandwidth in the case below */
187 			break;
188 		case TRL_NOMINAL_RATE_1:
189 			/* 6 MHz: 64/7 * 6/8 / 20.48 * 2^16 = 0x55b6.db6 */
190 			/* 7 MHz: 64/7 * 7/8 / 20.48 * 2^16 = 0x6400 */
191 			/* 8 MHz: 64/7 * 8/8 / 20.48 * 2^16 = 0x7249.249 */
192 			buf[1] = 0x72;
193 			buf[2] = 0x49;
194 			mt352_write(fe, buf, 3);
195 			break;
196 		case INPUT_FREQ_0:
197 			/* Set our custom IF in the case below */
198 			break;
199 		case INPUT_FREQ_1:
200 			/* 4.56 MHz IF: (20.48 - 4.56)/20.48 * 2^14 = 0x31c0 */
201 			buf[1] = 0x31;
202 			buf[2] = 0xc0;
203 			mt352_write(fe, buf, 3);
204 			break;
205 		default:
206 			/* Pass through the register-value pair from the fw */
207 			buf[1] = fw->data[i+1];
208 			mt352_write(fe, buf, 2);
209 			break;
210 		}
211 	}
212 
213 	buf[0] = (u8) TUNER_GO;
214 	buf[1] = 0x01; /* Go */
215 	mt352_write(fe, buf, 2);
216 	release_firmware(fw);
217 	return 0;
218 }
219 
220 static struct mt352_config yuan_mpc718_mt352_demod = {
221 	.demod_address = 0x1e >> 1,
222 	.adc_clock     = 20480,     /* 20.480 MHz */
223 	.if2           =  4560,     /*  4.560 MHz */
224 	.no_tuner      = 1,         /* XC3028 is not behind the gate */
225 	.demod_init    = yuan_mpc718_mt352_init,
226 };
227 
228 static struct zl10353_config yuan_mpc718_zl10353_demod = {
229 	.demod_address         = 0x1e >> 1, /* Datasheet suggested straps */
230 	.if2                   = 45600,     /* 4.560 MHz IF from the XC3028 */
231 	.parallel_ts           = 1,         /* Not a serial TS */
232 	.no_tuner              = 1,         /* XC3028 is not behind the gate */
233 	.disable_i2c_gate_ctrl = 1,         /* Disable the I2C gate */
234 };
235 
236 static struct zl10353_config gotview_dvd3_zl10353_demod = {
237 	.demod_address         = 0x1e >> 1, /* Datasheet suggested straps */
238 	.if2                   = 45600,     /* 4.560 MHz IF from the XC3028 */
239 	.parallel_ts           = 1,         /* Not a serial TS */
240 	.no_tuner              = 1,         /* XC3028 is not behind the gate */
241 	.disable_i2c_gate_ctrl = 1,         /* Disable the I2C gate */
242 };
243 
244 static int dvb_register(struct cx18_stream *stream);
245 
246 /* Kernel DVB framework calls this when the feed needs to start.
247  * The CX18 framework should enable the transport DMA handling
248  * and queue processing.
249  */
250 static int cx18_dvb_start_feed(struct dvb_demux_feed *feed)
251 {
252 	struct dvb_demux *demux = feed->demux;
253 	struct cx18_stream *stream = (struct cx18_stream *) demux->priv;
254 	struct cx18 *cx;
255 	int ret;
256 	u32 v;
257 
258 	if (!stream)
259 		return -EINVAL;
260 
261 	cx = stream->cx;
262 	CX18_DEBUG_INFO("Start feed: pid = 0x%x index = %d\n",
263 			feed->pid, feed->index);
264 
265 	mutex_lock(&cx->serialize_lock);
266 	ret = cx18_init_on_first_open(cx);
267 	mutex_unlock(&cx->serialize_lock);
268 	if (ret) {
269 		CX18_ERR("Failed to initialize firmware starting DVB feed\n");
270 		return ret;
271 	}
272 	ret = -EINVAL;
273 
274 	switch (cx->card->type) {
275 	case CX18_CARD_HVR_1600_ESMT:
276 	case CX18_CARD_HVR_1600_SAMSUNG:
277 	case CX18_CARD_HVR_1600_S5H1411:
278 		v = cx18_read_reg(cx, CX18_REG_DMUX_NUM_PORT_0_CONTROL);
279 		v |= 0x00400000; /* Serial Mode */
280 		v |= 0x00002000; /* Data Length - Byte */
281 		v |= 0x00010000; /* Error - Polarity */
282 		v |= 0x00020000; /* Error - Passthru */
283 		v |= 0x000c0000; /* Error - Ignore */
284 		cx18_write_reg(cx, v, CX18_REG_DMUX_NUM_PORT_0_CONTROL);
285 		break;
286 
287 	case CX18_CARD_LEADTEK_DVR3100H:
288 	case CX18_CARD_YUAN_MPC718:
289 	case CX18_CARD_GOTVIEW_PCI_DVD3:
290 	default:
291 		/* Assumption - Parallel transport - Signalling
292 		 * undefined or default.
293 		 */
294 		break;
295 	}
296 
297 	if (!demux->dmx.frontend)
298 		return -EINVAL;
299 
300 	mutex_lock(&stream->dvb->feedlock);
301 	if (stream->dvb->feeding++ == 0) {
302 		CX18_DEBUG_INFO("Starting Transport DMA\n");
303 		mutex_lock(&cx->serialize_lock);
304 		set_bit(CX18_F_S_STREAMING, &stream->s_flags);
305 		ret = cx18_start_v4l2_encode_stream(stream);
306 		if (ret < 0) {
307 			CX18_DEBUG_INFO("Failed to start Transport DMA\n");
308 			stream->dvb->feeding--;
309 			if (stream->dvb->feeding == 0)
310 				clear_bit(CX18_F_S_STREAMING, &stream->s_flags);
311 		}
312 		mutex_unlock(&cx->serialize_lock);
313 	} else
314 		ret = 0;
315 	mutex_unlock(&stream->dvb->feedlock);
316 
317 	return ret;
318 }
319 
320 /* Kernel DVB framework calls this when the feed needs to stop. */
321 static int cx18_dvb_stop_feed(struct dvb_demux_feed *feed)
322 {
323 	struct dvb_demux *demux = feed->demux;
324 	struct cx18_stream *stream = (struct cx18_stream *)demux->priv;
325 	struct cx18 *cx;
326 	int ret = -EINVAL;
327 
328 	if (stream) {
329 		cx = stream->cx;
330 		CX18_DEBUG_INFO("Stop feed: pid = 0x%x index = %d\n",
331 				feed->pid, feed->index);
332 
333 		mutex_lock(&stream->dvb->feedlock);
334 		if (--stream->dvb->feeding == 0) {
335 			CX18_DEBUG_INFO("Stopping Transport DMA\n");
336 			mutex_lock(&cx->serialize_lock);
337 			ret = cx18_stop_v4l2_encode_stream(stream, 0);
338 			mutex_unlock(&cx->serialize_lock);
339 		} else
340 			ret = 0;
341 		mutex_unlock(&stream->dvb->feedlock);
342 	}
343 
344 	return ret;
345 }
346 
347 int cx18_dvb_register(struct cx18_stream *stream)
348 {
349 	struct cx18 *cx = stream->cx;
350 	struct cx18_dvb *dvb = stream->dvb;
351 	struct dvb_adapter *dvb_adapter;
352 	struct dvb_demux *dvbdemux;
353 	struct dmx_demux *dmx;
354 	int ret;
355 
356 	if (!dvb)
357 		return -EINVAL;
358 
359 	dvb->enabled = 0;
360 	dvb->stream = stream;
361 
362 	ret = dvb_register_adapter(&dvb->dvb_adapter,
363 			CX18_DRIVER_NAME,
364 			THIS_MODULE, &cx->pci_dev->dev, adapter_nr);
365 	if (ret < 0)
366 		goto err_out;
367 
368 	dvb_adapter = &dvb->dvb_adapter;
369 
370 	dvbdemux = &dvb->demux;
371 
372 	dvbdemux->priv = (void *)stream;
373 
374 	dvbdemux->filternum = 256;
375 	dvbdemux->feednum = 256;
376 	dvbdemux->start_feed = cx18_dvb_start_feed;
377 	dvbdemux->stop_feed = cx18_dvb_stop_feed;
378 	dvbdemux->dmx.capabilities = (DMX_TS_FILTERING |
379 		DMX_SECTION_FILTERING | DMX_MEMORY_BASED_FILTERING);
380 	ret = dvb_dmx_init(dvbdemux);
381 	if (ret < 0)
382 		goto err_dvb_unregister_adapter;
383 
384 	dmx = &dvbdemux->dmx;
385 
386 	dvb->hw_frontend.source = DMX_FRONTEND_0;
387 	dvb->mem_frontend.source = DMX_MEMORY_FE;
388 	dvb->dmxdev.filternum = 256;
389 	dvb->dmxdev.demux = dmx;
390 
391 	ret = dvb_dmxdev_init(&dvb->dmxdev, dvb_adapter);
392 	if (ret < 0)
393 		goto err_dvb_dmx_release;
394 
395 	ret = dmx->add_frontend(dmx, &dvb->hw_frontend);
396 	if (ret < 0)
397 		goto err_dvb_dmxdev_release;
398 
399 	ret = dmx->add_frontend(dmx, &dvb->mem_frontend);
400 	if (ret < 0)
401 		goto err_remove_hw_frontend;
402 
403 	ret = dmx->connect_frontend(dmx, &dvb->hw_frontend);
404 	if (ret < 0)
405 		goto err_remove_mem_frontend;
406 
407 	ret = dvb_register(stream);
408 	if (ret < 0)
409 		goto err_disconnect_frontend;
410 
411 	dvb_net_init(dvb_adapter, &dvb->dvbnet, dmx);
412 
413 	CX18_INFO("DVB Frontend registered\n");
414 	CX18_INFO("Registered DVB adapter%d for %s (%d x %d.%02d kB)\n",
415 		  stream->dvb->dvb_adapter.num, stream->name,
416 		  stream->buffers, stream->buf_size/1024,
417 		  (stream->buf_size * 100 / 1024) % 100);
418 
419 	mutex_init(&dvb->feedlock);
420 	dvb->enabled = 1;
421 	return ret;
422 
423 err_disconnect_frontend:
424 	dmx->disconnect_frontend(dmx);
425 err_remove_mem_frontend:
426 	dmx->remove_frontend(dmx, &dvb->mem_frontend);
427 err_remove_hw_frontend:
428 	dmx->remove_frontend(dmx, &dvb->hw_frontend);
429 err_dvb_dmxdev_release:
430 	dvb_dmxdev_release(&dvb->dmxdev);
431 err_dvb_dmx_release:
432 	dvb_dmx_release(dvbdemux);
433 err_dvb_unregister_adapter:
434 	dvb_unregister_adapter(dvb_adapter);
435 err_out:
436 	return ret;
437 }
438 
439 void cx18_dvb_unregister(struct cx18_stream *stream)
440 {
441 	struct cx18 *cx = stream->cx;
442 	struct cx18_dvb *dvb = stream->dvb;
443 	struct dvb_adapter *dvb_adapter;
444 	struct dvb_demux *dvbdemux;
445 	struct dmx_demux *dmx;
446 
447 	CX18_INFO("unregister DVB\n");
448 
449 	if (dvb == NULL || !dvb->enabled)
450 		return;
451 
452 	dvb_adapter = &dvb->dvb_adapter;
453 	dvbdemux = &dvb->demux;
454 	dmx = &dvbdemux->dmx;
455 
456 	dmx->close(dmx);
457 	dvb_net_release(&dvb->dvbnet);
458 	dmx->remove_frontend(dmx, &dvb->mem_frontend);
459 	dmx->remove_frontend(dmx, &dvb->hw_frontend);
460 	dvb_dmxdev_release(&dvb->dmxdev);
461 	dvb_dmx_release(dvbdemux);
462 	dvb_unregister_frontend(dvb->fe);
463 	dvb_frontend_detach(dvb->fe);
464 	dvb_unregister_adapter(dvb_adapter);
465 }
466 
467 /* All the DVB attach calls go here, this function get's modified
468  * for each new card. cx18_dvb_start_feed() will also need changes.
469  */
470 static int dvb_register(struct cx18_stream *stream)
471 {
472 	struct cx18_dvb *dvb = stream->dvb;
473 	struct cx18 *cx = stream->cx;
474 	int ret = 0;
475 
476 	switch (cx->card->type) {
477 	case CX18_CARD_HVR_1600_ESMT:
478 	case CX18_CARD_HVR_1600_SAMSUNG:
479 		dvb->fe = dvb_attach(s5h1409_attach,
480 			&hauppauge_hvr1600_config,
481 			&cx->i2c_adap[0]);
482 		if (dvb->fe != NULL) {
483 			dvb_attach(mxl5005s_attach, dvb->fe,
484 				&cx->i2c_adap[0],
485 				&hauppauge_hvr1600_tuner);
486 			ret = 0;
487 		}
488 		break;
489 	case CX18_CARD_HVR_1600_S5H1411:
490 		dvb->fe = dvb_attach(s5h1411_attach,
491 				     &hcw_s5h1411_config,
492 				     &cx->i2c_adap[0]);
493 		if (dvb->fe != NULL)
494 			dvb_attach(tda18271_attach, dvb->fe,
495 				   0x60, &cx->i2c_adap[0],
496 				   &hauppauge_tda18271_config);
497 		break;
498 	case CX18_CARD_LEADTEK_DVR3100H:
499 		dvb->fe = dvb_attach(zl10353_attach,
500 				     &leadtek_dvr3100h_demod,
501 				     &cx->i2c_adap[1]);
502 		if (dvb->fe != NULL) {
503 			struct dvb_frontend *fe;
504 			struct xc2028_config cfg = {
505 				.i2c_adap = &cx->i2c_adap[1],
506 				.i2c_addr = 0xc2 >> 1,
507 				.ctrl = NULL,
508 			};
509 			static struct xc2028_ctrl ctrl = {
510 				.fname   = XC2028_DEFAULT_FIRMWARE,
511 				.max_len = 64,
512 				.demod   = XC3028_FE_ZARLINK456,
513 				.type    = XC2028_AUTO,
514 			};
515 
516 			fe = dvb_attach(xc2028_attach, dvb->fe, &cfg);
517 			if (fe != NULL && fe->ops.tuner_ops.set_config != NULL)
518 				fe->ops.tuner_ops.set_config(fe, &ctrl);
519 		}
520 		break;
521 	case CX18_CARD_YUAN_MPC718:
522 		/*
523 		 * TODO
524 		 * Apparently, these cards also could instead have a
525 		 * DiBcom demod supported by one of the db7000 drivers
526 		 */
527 		dvb->fe = dvb_attach(mt352_attach,
528 				     &yuan_mpc718_mt352_demod,
529 				     &cx->i2c_adap[1]);
530 		if (dvb->fe == NULL)
531 			dvb->fe = dvb_attach(zl10353_attach,
532 					     &yuan_mpc718_zl10353_demod,
533 					     &cx->i2c_adap[1]);
534 		if (dvb->fe != NULL) {
535 			struct dvb_frontend *fe;
536 			struct xc2028_config cfg = {
537 				.i2c_adap = &cx->i2c_adap[1],
538 				.i2c_addr = 0xc2 >> 1,
539 				.ctrl = NULL,
540 			};
541 			static struct xc2028_ctrl ctrl = {
542 				.fname   = XC2028_DEFAULT_FIRMWARE,
543 				.max_len = 64,
544 				.demod   = XC3028_FE_ZARLINK456,
545 				.type    = XC2028_AUTO,
546 			};
547 
548 			fe = dvb_attach(xc2028_attach, dvb->fe, &cfg);
549 			if (fe != NULL && fe->ops.tuner_ops.set_config != NULL)
550 				fe->ops.tuner_ops.set_config(fe, &ctrl);
551 		}
552 		break;
553 	case CX18_CARD_GOTVIEW_PCI_DVD3:
554 			dvb->fe = dvb_attach(zl10353_attach,
555 					     &gotview_dvd3_zl10353_demod,
556 					     &cx->i2c_adap[1]);
557 		if (dvb->fe != NULL) {
558 			struct dvb_frontend *fe;
559 			struct xc2028_config cfg = {
560 				.i2c_adap = &cx->i2c_adap[1],
561 				.i2c_addr = 0xc2 >> 1,
562 				.ctrl = NULL,
563 			};
564 			static struct xc2028_ctrl ctrl = {
565 				.fname   = XC2028_DEFAULT_FIRMWARE,
566 				.max_len = 64,
567 				.demod   = XC3028_FE_ZARLINK456,
568 				.type    = XC2028_AUTO,
569 			};
570 
571 			fe = dvb_attach(xc2028_attach, dvb->fe, &cfg);
572 			if (fe != NULL && fe->ops.tuner_ops.set_config != NULL)
573 				fe->ops.tuner_ops.set_config(fe, &ctrl);
574 		}
575 		break;
576 	default:
577 		/* No Digital Tv Support */
578 		break;
579 	}
580 
581 	if (dvb->fe == NULL) {
582 		CX18_ERR("frontend initialization failed\n");
583 		return -1;
584 	}
585 
586 	dvb->fe->callback = cx18_reset_tuner_gpio;
587 
588 	ret = dvb_register_frontend(&dvb->dvb_adapter, dvb->fe);
589 	if (ret < 0) {
590 		if (dvb->fe->ops.release)
591 			dvb->fe->ops.release(dvb->fe);
592 		return ret;
593 	}
594 
595 	/*
596 	 * The firmware seems to enable the TS DMUX clock
597 	 * under various circumstances.  However, since we know we
598 	 * might use it, let's just turn it on ourselves here.
599 	 */
600 	cx18_write_reg_expect(cx,
601 			      (CX18_DMUX_CLK_MASK << 16) | CX18_DMUX_CLK_MASK,
602 			      CX18_CLOCK_ENABLE2,
603 			      CX18_DMUX_CLK_MASK,
604 			      (CX18_DMUX_CLK_MASK << 16) | CX18_DMUX_CLK_MASK);
605 
606 	return ret;
607 }
608 
609 MODULE_FIRMWARE(FWFILE);
610