PageRenderTime 83ms CodeModel.GetById 9ms app.highlight 65ms RepoModel.GetById 0ms app.codeStats 1ms

/drivers/media/video/em28xx/em28xx-dvb.c

https://bitbucket.org/wisechild/galaxy-nexus
C | 757 lines | 605 code | 103 blank | 49 comment | 67 complexity | 33300a6a1a0f3a61d0f0d8b25b014189 MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
  1/*
  2 DVB device driver for em28xx
  3
  4 (c) 2008 Mauro Carvalho Chehab <mchehab@infradead.org>
  5
  6 (c) 2008 Devin Heitmueller <devin.heitmueller@gmail.com>
  7	- Fixes for the driver to properly work with HVR-950
  8	- Fixes for the driver to properly work with Pinnacle PCTV HD Pro Stick
  9	- Fixes for the driver to properly work with AMD ATI TV Wonder HD 600
 10
 11 (c) 2008 Aidan Thornton <makosoft@googlemail.com>
 12
 13 Based on cx88-dvb, saa7134-dvb and videobuf-dvb originally written by:
 14	(c) 2004, 2005 Chris Pascoe <c.pascoe@itee.uq.edu.au>
 15	(c) 2004 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
 16
 17 This program is free software; you can redistribute it and/or modify
 18 it under the terms of the GNU General Public License as published by
 19 the Free Software Foundation; either version 2 of the License.
 20 */
 21
 22#include <linux/kernel.h>
 23#include <linux/slab.h>
 24#include <linux/usb.h>
 25
 26#include "em28xx.h"
 27#include <media/v4l2-common.h>
 28#include <media/videobuf-vmalloc.h>
 29#include <media/tuner.h>
 30#include "tuner-simple.h"
 31
 32#include "lgdt330x.h"
 33#include "lgdt3305.h"
 34#include "zl10353.h"
 35#include "s5h1409.h"
 36#include "mt352.h"
 37#include "mt352_priv.h" /* FIXME */
 38#include "tda1002x.h"
 39#include "tda18271.h"
 40#include "s921.h"
 41#include "drxd.h"
 42#include "cxd2820r.h"
 43
 44MODULE_DESCRIPTION("driver for em28xx based DVB cards");
 45MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
 46MODULE_LICENSE("GPL");
 47
 48static unsigned int debug;
 49module_param(debug, int, 0644);
 50MODULE_PARM_DESC(debug, "enable debug messages [dvb]");
 51
 52DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
 53
 54#define dprintk(level, fmt, arg...) do {			\
 55if (debug >= level) 						\
 56	printk(KERN_DEBUG "%s/2-dvb: " fmt, dev->name, ## arg);	\
 57} while (0)
 58
 59#define EM28XX_DVB_NUM_BUFS 5
 60#define EM28XX_DVB_MAX_PACKETS 64
 61
 62struct em28xx_dvb {
 63	struct dvb_frontend        *fe[2];
 64
 65	/* feed count management */
 66	struct mutex               lock;
 67	int                        nfeeds;
 68
 69	/* general boilerplate stuff */
 70	struct dvb_adapter         adapter;
 71	struct dvb_demux           demux;
 72	struct dmxdev              dmxdev;
 73	struct dmx_frontend        fe_hw;
 74	struct dmx_frontend        fe_mem;
 75	struct dvb_net             net;
 76};
 77
 78
 79static inline void print_err_status(struct em28xx *dev,
 80				     int packet, int status)
 81{
 82	char *errmsg = "Unknown";
 83
 84	switch (status) {
 85	case -ENOENT:
 86		errmsg = "unlinked synchronuously";
 87		break;
 88	case -ECONNRESET:
 89		errmsg = "unlinked asynchronuously";
 90		break;
 91	case -ENOSR:
 92		errmsg = "Buffer error (overrun)";
 93		break;
 94	case -EPIPE:
 95		errmsg = "Stalled (device not responding)";
 96		break;
 97	case -EOVERFLOW:
 98		errmsg = "Babble (bad cable?)";
 99		break;
100	case -EPROTO:
101		errmsg = "Bit-stuff error (bad cable?)";
102		break;
103	case -EILSEQ:
104		errmsg = "CRC/Timeout (could be anything)";
105		break;
106	case -ETIME:
107		errmsg = "Device does not respond";
108		break;
109	}
110	if (packet < 0) {
111		dprintk(1, "URB status %d [%s].\n", status, errmsg);
112	} else {
113		dprintk(1, "URB packet %d, status %d [%s].\n",
114			packet, status, errmsg);
115	}
116}
117
118static inline int dvb_isoc_copy(struct em28xx *dev, struct urb *urb)
119{
120	int i;
121
122	if (!dev)
123		return 0;
124
125	if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
126		return 0;
127
128	if (urb->status < 0) {
129		print_err_status(dev, -1, urb->status);
130		if (urb->status == -ENOENT)
131			return 0;
132	}
133
134	for (i = 0; i < urb->number_of_packets; i++) {
135		int status = urb->iso_frame_desc[i].status;
136
137		if (status < 0) {
138			print_err_status(dev, i, status);
139			if (urb->iso_frame_desc[i].status != -EPROTO)
140				continue;
141		}
142
143		dvb_dmx_swfilter(&dev->dvb->demux, urb->transfer_buffer +
144				 urb->iso_frame_desc[i].offset,
145				 urb->iso_frame_desc[i].actual_length);
146	}
147
148	return 0;
149}
150
151static int start_streaming(struct em28xx_dvb *dvb)
152{
153	int rc;
154	struct em28xx *dev = dvb->adapter.priv;
155	int max_dvb_packet_size;
156
157	usb_set_interface(dev->udev, 0, 1);
158	rc = em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
159	if (rc < 0)
160		return rc;
161
162	max_dvb_packet_size = em28xx_isoc_dvb_max_packetsize(dev);
163
164	return em28xx_init_isoc(dev, EM28XX_DVB_MAX_PACKETS,
165				EM28XX_DVB_NUM_BUFS, max_dvb_packet_size,
166				dvb_isoc_copy);
167}
168
169static int stop_streaming(struct em28xx_dvb *dvb)
170{
171	struct em28xx *dev = dvb->adapter.priv;
172
173	em28xx_uninit_isoc(dev);
174
175	em28xx_set_mode(dev, EM28XX_SUSPEND);
176
177	return 0;
178}
179
180static int start_feed(struct dvb_demux_feed *feed)
181{
182	struct dvb_demux *demux  = feed->demux;
183	struct em28xx_dvb *dvb = demux->priv;
184	int rc, ret;
185
186	if (!demux->dmx.frontend)
187		return -EINVAL;
188
189	mutex_lock(&dvb->lock);
190	dvb->nfeeds++;
191	rc = dvb->nfeeds;
192
193	if (dvb->nfeeds == 1) {
194		ret = start_streaming(dvb);
195		if (ret < 0)
196			rc = ret;
197	}
198
199	mutex_unlock(&dvb->lock);
200	return rc;
201}
202
203static int stop_feed(struct dvb_demux_feed *feed)
204{
205	struct dvb_demux *demux  = feed->demux;
206	struct em28xx_dvb *dvb = demux->priv;
207	int err = 0;
208
209	mutex_lock(&dvb->lock);
210	dvb->nfeeds--;
211
212	if (0 == dvb->nfeeds)
213		err = stop_streaming(dvb);
214
215	mutex_unlock(&dvb->lock);
216	return err;
217}
218
219
220
221/* ------------------------------------------------------------------ */
222static int em28xx_dvb_bus_ctrl(struct dvb_frontend *fe, int acquire)
223{
224	struct em28xx *dev = fe->dvb->priv;
225
226	if (acquire)
227		return em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
228	else
229		return em28xx_set_mode(dev, EM28XX_SUSPEND);
230}
231
232/* ------------------------------------------------------------------ */
233
234static struct lgdt330x_config em2880_lgdt3303_dev = {
235	.demod_address = 0x0e,
236	.demod_chip = LGDT3303,
237};
238
239static struct lgdt3305_config em2870_lgdt3304_dev = {
240	.i2c_addr           = 0x0e,
241	.demod_chip         = LGDT3304,
242	.spectral_inversion = 1,
243	.deny_i2c_rptr      = 1,
244	.mpeg_mode          = LGDT3305_MPEG_PARALLEL,
245	.tpclk_edge         = LGDT3305_TPCLK_FALLING_EDGE,
246	.tpvalid_polarity   = LGDT3305_TP_VALID_HIGH,
247	.vsb_if_khz         = 3250,
248	.qam_if_khz         = 4000,
249};
250
251static struct s921_config sharp_isdbt = {
252	.demod_address = 0x30 >> 1
253};
254
255static struct zl10353_config em28xx_zl10353_with_xc3028 = {
256	.demod_address = (0x1e >> 1),
257	.no_tuner = 1,
258	.parallel_ts = 1,
259	.if2 = 45600,
260};
261
262static struct s5h1409_config em28xx_s5h1409_with_xc3028 = {
263	.demod_address = 0x32 >> 1,
264	.output_mode   = S5H1409_PARALLEL_OUTPUT,
265	.gpio          = S5H1409_GPIO_OFF,
266	.inversion     = S5H1409_INVERSION_OFF,
267	.status_mode   = S5H1409_DEMODLOCKING,
268	.mpeg_timing   = S5H1409_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK
269};
270
271static struct tda18271_std_map kworld_a340_std_map = {
272	.atsc_6   = { .if_freq = 3250, .agc_mode = 3, .std = 0,
273		      .if_lvl = 1, .rfagc_top = 0x37, },
274	.qam_6    = { .if_freq = 4000, .agc_mode = 3, .std = 1,
275		      .if_lvl = 1, .rfagc_top = 0x37, },
276};
277
278static struct tda18271_config kworld_a340_config = {
279	.std_map           = &kworld_a340_std_map,
280};
281
282static struct zl10353_config em28xx_zl10353_xc3028_no_i2c_gate = {
283	.demod_address = (0x1e >> 1),
284	.no_tuner = 1,
285	.disable_i2c_gate_ctrl = 1,
286	.parallel_ts = 1,
287	.if2 = 45600,
288};
289
290static struct drxd_config em28xx_drxd = {
291	.index = 0, .demod_address = 0x70, .demod_revision = 0xa2,
292	.demoda_address = 0x00, .pll_address = 0x00,
293	.pll_type = DRXD_PLL_NONE, .clock = 12000, .insert_rs_byte = 1,
294	.pll_set = NULL, .osc_deviation = NULL, .IF = 42800000,
295	.disable_i2c_gate_ctrl = 1,
296};
297
298static int mt352_terratec_xs_init(struct dvb_frontend *fe)
299{
300	/* Values extracted from a USB trace of the Terratec Windows driver */
301	static u8 clock_config[]   = { CLOCK_CTL,  0x38, 0x2c };
302	static u8 reset[]          = { RESET,      0x80 };
303	static u8 adc_ctl_1_cfg[]  = { ADC_CTL_1,  0x40 };
304	static u8 agc_cfg[]        = { AGC_TARGET, 0x28, 0xa0 };
305	static u8 input_freq_cfg[] = { INPUT_FREQ_1, 0x31, 0xb8 };
306	static u8 rs_err_cfg[]     = { RS_ERR_PER_1, 0x00, 0x4d };
307	static u8 capt_range_cfg[] = { CAPT_RANGE, 0x32 };
308	static u8 trl_nom_cfg[]    = { TRL_NOMINAL_RATE_1, 0x64, 0x00 };
309	static u8 tps_given_cfg[]  = { TPS_GIVEN_1, 0x40, 0x80, 0x50 };
310	static u8 tuner_go[]       = { TUNER_GO, 0x01};
311
312	mt352_write(fe, clock_config,   sizeof(clock_config));
313	udelay(200);
314	mt352_write(fe, reset,          sizeof(reset));
315	mt352_write(fe, adc_ctl_1_cfg,  sizeof(adc_ctl_1_cfg));
316	mt352_write(fe, agc_cfg,        sizeof(agc_cfg));
317	mt352_write(fe, input_freq_cfg, sizeof(input_freq_cfg));
318	mt352_write(fe, rs_err_cfg,     sizeof(rs_err_cfg));
319	mt352_write(fe, capt_range_cfg, sizeof(capt_range_cfg));
320	mt352_write(fe, trl_nom_cfg,    sizeof(trl_nom_cfg));
321	mt352_write(fe, tps_given_cfg,  sizeof(tps_given_cfg));
322	mt352_write(fe, tuner_go,       sizeof(tuner_go));
323	return 0;
324}
325
326static struct mt352_config terratec_xs_mt352_cfg = {
327	.demod_address = (0x1e >> 1),
328	.no_tuner = 1,
329	.if2 = 45600,
330	.demod_init = mt352_terratec_xs_init,
331};
332
333static struct tda10023_config em28xx_tda10023_config = {
334	.demod_address = 0x0c,
335	.invert = 1,
336};
337
338static struct cxd2820r_config em28xx_cxd2820r_config = {
339	.i2c_address = (0xd8 >> 1),
340	.ts_mode = CXD2820R_TS_SERIAL,
341	.if_dvbt_6  = 3300,
342	.if_dvbt_7  = 3500,
343	.if_dvbt_8  = 4000,
344	.if_dvbt2_6 = 3300,
345	.if_dvbt2_7 = 3500,
346	.if_dvbt2_8 = 4000,
347	.if_dvbc    = 5000,
348
349	/* enable LNA for DVB-T2 and DVB-C */
350	.gpio_dvbt2[0] = CXD2820R_GPIO_E | CXD2820R_GPIO_O | CXD2820R_GPIO_L,
351	.gpio_dvbc[0] = CXD2820R_GPIO_E | CXD2820R_GPIO_O | CXD2820R_GPIO_L,
352};
353
354static struct tda18271_config em28xx_cxd2820r_tda18271_config = {
355	.output_opt = TDA18271_OUTPUT_LT_OFF,
356};
357
358/* ------------------------------------------------------------------ */
359
360static int attach_xc3028(u8 addr, struct em28xx *dev)
361{
362	struct dvb_frontend *fe;
363	struct xc2028_config cfg;
364
365	memset(&cfg, 0, sizeof(cfg));
366	cfg.i2c_adap  = &dev->i2c_adap;
367	cfg.i2c_addr  = addr;
368
369	if (!dev->dvb->fe[0]) {
370		em28xx_errdev("/2: dvb frontend not attached. "
371				"Can't attach xc3028\n");
372		return -EINVAL;
373	}
374
375	fe = dvb_attach(xc2028_attach, dev->dvb->fe[0], &cfg);
376	if (!fe) {
377		em28xx_errdev("/2: xc3028 attach failed\n");
378		dvb_frontend_detach(dev->dvb->fe[0]);
379		dev->dvb->fe[0] = NULL;
380		return -EINVAL;
381	}
382
383	em28xx_info("%s/2: xc3028 attached\n", dev->name);
384
385	return 0;
386}
387
388/* ------------------------------------------------------------------ */
389
390static int register_dvb(struct em28xx_dvb *dvb,
391		 struct module *module,
392		 struct em28xx *dev,
393		 struct device *device)
394{
395	int result;
396
397	mutex_init(&dvb->lock);
398
399	/* register adapter */
400	result = dvb_register_adapter(&dvb->adapter, dev->name, module, device,
401				      adapter_nr);
402	if (result < 0) {
403		printk(KERN_WARNING "%s: dvb_register_adapter failed (errno = %d)\n",
404		       dev->name, result);
405		goto fail_adapter;
406	}
407
408	/* Ensure all frontends negotiate bus access */
409	dvb->fe[0]->ops.ts_bus_ctrl = em28xx_dvb_bus_ctrl;
410	if (dvb->fe[1])
411		dvb->fe[1]->ops.ts_bus_ctrl = em28xx_dvb_bus_ctrl;
412
413	dvb->adapter.priv = dev;
414
415	/* register frontend */
416	result = dvb_register_frontend(&dvb->adapter, dvb->fe[0]);
417	if (result < 0) {
418		printk(KERN_WARNING "%s: dvb_register_frontend failed (errno = %d)\n",
419		       dev->name, result);
420		goto fail_frontend0;
421	}
422
423	/* register 2nd frontend */
424	if (dvb->fe[1]) {
425		result = dvb_register_frontend(&dvb->adapter, dvb->fe[1]);
426		if (result < 0) {
427			printk(KERN_WARNING "%s: 2nd dvb_register_frontend failed (errno = %d)\n",
428				dev->name, result);
429			goto fail_frontend1;
430		}
431	}
432
433	/* register demux stuff */
434	dvb->demux.dmx.capabilities =
435		DMX_TS_FILTERING | DMX_SECTION_FILTERING |
436		DMX_MEMORY_BASED_FILTERING;
437	dvb->demux.priv       = dvb;
438	dvb->demux.filternum  = 256;
439	dvb->demux.feednum    = 256;
440	dvb->demux.start_feed = start_feed;
441	dvb->demux.stop_feed  = stop_feed;
442
443	result = dvb_dmx_init(&dvb->demux);
444	if (result < 0) {
445		printk(KERN_WARNING "%s: dvb_dmx_init failed (errno = %d)\n",
446		       dev->name, result);
447		goto fail_dmx;
448	}
449
450	dvb->dmxdev.filternum    = 256;
451	dvb->dmxdev.demux        = &dvb->demux.dmx;
452	dvb->dmxdev.capabilities = 0;
453	result = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter);
454	if (result < 0) {
455		printk(KERN_WARNING "%s: dvb_dmxdev_init failed (errno = %d)\n",
456		       dev->name, result);
457		goto fail_dmxdev;
458	}
459
460	dvb->fe_hw.source = DMX_FRONTEND_0;
461	result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_hw);
462	if (result < 0) {
463		printk(KERN_WARNING "%s: add_frontend failed (DMX_FRONTEND_0, errno = %d)\n",
464		       dev->name, result);
465		goto fail_fe_hw;
466	}
467
468	dvb->fe_mem.source = DMX_MEMORY_FE;
469	result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_mem);
470	if (result < 0) {
471		printk(KERN_WARNING "%s: add_frontend failed (DMX_MEMORY_FE, errno = %d)\n",
472		       dev->name, result);
473		goto fail_fe_mem;
474	}
475
476	result = dvb->demux.dmx.connect_frontend(&dvb->demux.dmx, &dvb->fe_hw);
477	if (result < 0) {
478		printk(KERN_WARNING "%s: connect_frontend failed (errno = %d)\n",
479		       dev->name, result);
480		goto fail_fe_conn;
481	}
482
483	/* register network adapter */
484	dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx);
485	return 0;
486
487fail_fe_conn:
488	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
489fail_fe_mem:
490	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
491fail_fe_hw:
492	dvb_dmxdev_release(&dvb->dmxdev);
493fail_dmxdev:
494	dvb_dmx_release(&dvb->demux);
495fail_dmx:
496	if (dvb->fe[1])
497		dvb_unregister_frontend(dvb->fe[1]);
498	dvb_unregister_frontend(dvb->fe[0]);
499fail_frontend1:
500	if (dvb->fe[1])
501		dvb_frontend_detach(dvb->fe[1]);
502fail_frontend0:
503	dvb_frontend_detach(dvb->fe[0]);
504	dvb_unregister_adapter(&dvb->adapter);
505fail_adapter:
506	return result;
507}
508
509static void unregister_dvb(struct em28xx_dvb *dvb)
510{
511	dvb_net_release(&dvb->net);
512	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
513	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
514	dvb_dmxdev_release(&dvb->dmxdev);
515	dvb_dmx_release(&dvb->demux);
516	if (dvb->fe[1])
517		dvb_unregister_frontend(dvb->fe[1]);
518	dvb_unregister_frontend(dvb->fe[0]);
519	if (dvb->fe[1])
520		dvb_frontend_detach(dvb->fe[1]);
521	dvb_frontend_detach(dvb->fe[0]);
522	dvb_unregister_adapter(&dvb->adapter);
523}
524
525static int dvb_init(struct em28xx *dev)
526{
527	int result = 0;
528	struct em28xx_dvb *dvb;
529
530	if (!dev->board.has_dvb) {
531		/* This device does not support the extension */
532		printk(KERN_INFO "em28xx_dvb: This device does not support the extension\n");
533		return 0;
534	}
535
536	dvb = kzalloc(sizeof(struct em28xx_dvb), GFP_KERNEL);
537
538	if (dvb == NULL) {
539		em28xx_info("em28xx_dvb: memory allocation failed\n");
540		return -ENOMEM;
541	}
542	dev->dvb = dvb;
543	dvb->fe[0] = dvb->fe[1] = NULL;
544
545	mutex_lock(&dev->lock);
546	em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
547	/* init frontend */
548	switch (dev->model) {
549	case EM2874_LEADERSHIP_ISDBT:
550		dvb->fe[0] = dvb_attach(s921_attach,
551				&sharp_isdbt, &dev->i2c_adap);
552
553		if (!dvb->fe[0]) {
554			result = -EINVAL;
555			goto out_free;
556		}
557
558		break;
559	case EM2883_BOARD_HAUPPAUGE_WINTV_HVR_850:
560	case EM2883_BOARD_HAUPPAUGE_WINTV_HVR_950:
561	case EM2880_BOARD_PINNACLE_PCTV_HD_PRO:
562	case EM2880_BOARD_AMD_ATI_TV_WONDER_HD_600:
563		dvb->fe[0] = dvb_attach(lgdt330x_attach,
564					   &em2880_lgdt3303_dev,
565					   &dev->i2c_adap);
566		if (attach_xc3028(0x61, dev) < 0) {
567			result = -EINVAL;
568			goto out_free;
569		}
570		break;
571	case EM2880_BOARD_KWORLD_DVB_310U:
572		dvb->fe[0] = dvb_attach(zl10353_attach,
573					   &em28xx_zl10353_with_xc3028,
574					   &dev->i2c_adap);
575		if (attach_xc3028(0x61, dev) < 0) {
576			result = -EINVAL;
577			goto out_free;
578		}
579		break;
580	case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900:
581	case EM2882_BOARD_TERRATEC_HYBRID_XS:
582	case EM2880_BOARD_EMPIRE_DUAL_TV:
583		dvb->fe[0] = dvb_attach(zl10353_attach,
584					   &em28xx_zl10353_xc3028_no_i2c_gate,
585					   &dev->i2c_adap);
586		if (attach_xc3028(0x61, dev) < 0) {
587			result = -EINVAL;
588			goto out_free;
589		}
590		break;
591	case EM2880_BOARD_TERRATEC_HYBRID_XS:
592	case EM2880_BOARD_TERRATEC_HYBRID_XS_FR:
593	case EM2881_BOARD_PINNACLE_HYBRID_PRO:
594	case EM2882_BOARD_DIKOM_DK300:
595	case EM2882_BOARD_KWORLD_VS_DVBT:
596		dvb->fe[0] = dvb_attach(zl10353_attach,
597					   &em28xx_zl10353_xc3028_no_i2c_gate,
598					   &dev->i2c_adap);
599		if (dvb->fe[0] == NULL) {
600			/* This board could have either a zl10353 or a mt352.
601			   If the chip id isn't for zl10353, try mt352 */
602			dvb->fe[0] = dvb_attach(mt352_attach,
603						   &terratec_xs_mt352_cfg,
604						   &dev->i2c_adap);
605		}
606
607		if (attach_xc3028(0x61, dev) < 0) {
608			result = -EINVAL;
609			goto out_free;
610		}
611		break;
612	case EM2883_BOARD_KWORLD_HYBRID_330U:
613	case EM2882_BOARD_EVGA_INDTUBE:
614		dvb->fe[0] = dvb_attach(s5h1409_attach,
615					   &em28xx_s5h1409_with_xc3028,
616					   &dev->i2c_adap);
617		if (attach_xc3028(0x61, dev) < 0) {
618			result = -EINVAL;
619			goto out_free;
620		}
621		break;
622	case EM2882_BOARD_KWORLD_ATSC_315U:
623		dvb->fe[0] = dvb_attach(lgdt330x_attach,
624					   &em2880_lgdt3303_dev,
625					   &dev->i2c_adap);
626		if (dvb->fe[0] != NULL) {
627			if (!dvb_attach(simple_tuner_attach, dvb->fe[0],
628				&dev->i2c_adap, 0x61, TUNER_THOMSON_DTT761X)) {
629				result = -EINVAL;
630				goto out_free;
631			}
632		}
633		break;
634	case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900_R2:
635	case EM2882_BOARD_PINNACLE_HYBRID_PRO_330E:
636		dvb->fe[0] = dvb_attach(drxd_attach, &em28xx_drxd, NULL,
637					   &dev->i2c_adap, &dev->udev->dev);
638		if (attach_xc3028(0x61, dev) < 0) {
639			result = -EINVAL;
640			goto out_free;
641		}
642		break;
643	case EM2870_BOARD_REDDO_DVB_C_USB_BOX:
644		/* Philips CU1216L NIM (Philips TDA10023 + Infineon TUA6034) */
645		dvb->fe[0] = dvb_attach(tda10023_attach,
646			&em28xx_tda10023_config,
647			&dev->i2c_adap, 0x48);
648		if (dvb->fe[0]) {
649			if (!dvb_attach(simple_tuner_attach, dvb->fe[0],
650				&dev->i2c_adap, 0x60, TUNER_PHILIPS_CU1216L)) {
651				result = -EINVAL;
652				goto out_free;
653			}
654		}
655		break;
656	case EM2870_BOARD_KWORLD_A340:
657		dvb->fe[0] = dvb_attach(lgdt3305_attach,
658					   &em2870_lgdt3304_dev,
659					   &dev->i2c_adap);
660		if (dvb->fe[0] != NULL)
661			dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
662				   &dev->i2c_adap, &kworld_a340_config);
663		break;
664	case EM28174_BOARD_PCTV_290E:
665		/* MFE
666		 * FE 0 = DVB-T/T2 + FE 1 = DVB-C, both sharing same tuner. */
667		/* FE 0 */
668		dvb->fe[0] = dvb_attach(cxd2820r_attach,
669			&em28xx_cxd2820r_config, &dev->i2c_adap, NULL);
670		if (dvb->fe[0]) {
671			struct i2c_adapter *i2c_tuner;
672			i2c_tuner = cxd2820r_get_tuner_i2c_adapter(dvb->fe[0]);
673			/* FE 0 attach tuner */
674			if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
675				i2c_tuner, &em28xx_cxd2820r_tda18271_config)) {
676				dvb_frontend_detach(dvb->fe[0]);
677				result = -EINVAL;
678				goto out_free;
679			}
680			/* FE 1. This dvb_attach() cannot fail. */
681			dvb->fe[1] = dvb_attach(cxd2820r_attach, NULL, NULL,
682				dvb->fe[0]);
683			dvb->fe[1]->id = 1;
684			/* FE 1 attach tuner */
685			if (!dvb_attach(tda18271_attach, dvb->fe[1], 0x60,
686				i2c_tuner, &em28xx_cxd2820r_tda18271_config)) {
687				dvb_frontend_detach(dvb->fe[1]);
688				/* leave FE 0 still active */
689			}
690		}
691		break;
692	default:
693		em28xx_errdev("/2: The frontend of your DVB/ATSC card"
694				" isn't supported yet\n");
695		break;
696	}
697	if (NULL == dvb->fe[0]) {
698		em28xx_errdev("/2: frontend initialization failed\n");
699		result = -EINVAL;
700		goto out_free;
701	}
702	/* define general-purpose callback pointer */
703	dvb->fe[0]->callback = em28xx_tuner_callback;
704
705	/* register everything */
706	result = register_dvb(dvb, THIS_MODULE, dev, &dev->udev->dev);
707
708	if (result < 0)
709		goto out_free;
710
711	em28xx_info("Successfully loaded em28xx-dvb\n");
712ret:
713	em28xx_set_mode(dev, EM28XX_SUSPEND);
714	mutex_unlock(&dev->lock);
715	return result;
716
717out_free:
718	kfree(dvb);
719	dev->dvb = NULL;
720	goto ret;
721}
722
723static int dvb_fini(struct em28xx *dev)
724{
725	if (!dev->board.has_dvb) {
726		/* This device does not support the extension */
727		return 0;
728	}
729
730	if (dev->dvb) {
731		unregister_dvb(dev->dvb);
732		kfree(dev->dvb);
733		dev->dvb = NULL;
734	}
735
736	return 0;
737}
738
739static struct em28xx_ops dvb_ops = {
740	.id   = EM28XX_DVB,
741	.name = "Em28xx dvb Extension",
742	.init = dvb_init,
743	.fini = dvb_fini,
744};
745
746static int __init em28xx_dvb_register(void)
747{
748	return em28xx_register_extension(&dvb_ops);
749}
750
751static void __exit em28xx_dvb_unregister(void)
752{
753	em28xx_unregister_extension(&dvb_ops);
754}
755
756module_init(em28xx_dvb_register);
757module_exit(em28xx_dvb_unregister);