1// SPDX-License-Identifier: GPL-2.0
2//
3// DVB device driver for em28xx
4//
5// (c) 2008-2011 Mauro Carvalho Chehab <mchehab@kernel.org>
6//
7// (c) 2008 Devin Heitmueller <devin.heitmueller@gmail.com>
8//	- Fixes for the driver to properly work with HVR-950
9//	- Fixes for the driver to properly work with Pinnacle PCTV HD Pro Stick
10//	- Fixes for the driver to properly work with AMD ATI TV Wonder HD 600
11//
12// (c) 2008 Aidan Thornton <makosoft@googlemail.com>
13//
14// (c) 2012 Frank Schäfer <fschaefer.oss@googlemail.com>
15//
16// Based on cx88-dvb, saa7134-dvb and videobuf-dvb originally written by:
17//	(c) 2004, 2005 Chris Pascoe <c.pascoe@itee.uq.edu.au>
18//	(c) 2004 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
19//
20// This program is free software; you can redistribute it and/or modify
21// it under the terms of the GNU General Public License as published by
22// the Free Software Foundation version 2 of the License.
23
24#include "em28xx.h"
25
26#include <linux/kernel.h>
27#include <linux/slab.h>
28#include <linux/usb.h>
29
30#include <media/v4l2-common.h>
31#include <media/dvb_demux.h>
32#include <media/dvb_net.h>
33#include <media/dmxdev.h>
34#include <media/tuner.h>
35#include "tuner-simple.h"
36#include <linux/gpio.h>
37
38#include "lgdt330x.h"
39#include "lgdt3305.h"
40#include "lgdt3306a.h"
41#include "zl10353.h"
42#include "s5h1409.h"
43#include "mt2060.h"
44#include "mt352.h"
45#include "mt352_priv.h" /* FIXME */
46#include "tda1002x.h"
47#include "drx39xyj/drx39xxj.h"
48#include "tda18271.h"
49#include "s921.h"
50#include "drxd.h"
51#include "cxd2820r.h"
52#include "tda18271c2dd.h"
53#include "drxk.h"
54#include "tda10071.h"
55#include "tda18212.h"
56#include "a8293.h"
57#include "qt1010.h"
58#include "mb86a20s.h"
59#include "m88ds3103.h"
60#include "ts2020.h"
61#include "si2168.h"
62#include "si2157.h"
63#include "tc90522.h"
64#include "qm1d1c0042.h"
65
66MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@kernel.org>");
67MODULE_LICENSE("GPL v2");
68MODULE_DESCRIPTION(DRIVER_DESC " - digital TV interface");
69MODULE_VERSION(EM28XX_VERSION);
70
71static unsigned int debug;
72module_param(debug, int, 0644);
73MODULE_PARM_DESC(debug, "enable debug messages [dvb]");
74
75DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
76
77#define dprintk(level, fmt, arg...) do {				\
78	if (debug >= level)						\
79		dev_printk(KERN_DEBUG, &dev->intf->dev,			\
80			   "dvb: " fmt, ## arg);			\
81} while (0)
82
83struct em28xx_dvb {
84	struct dvb_frontend        *fe[2];
85
86	/* feed count management */
87	struct mutex               lock;
88	int                        nfeeds;
89
90	/* general boilerplate stuff */
91	struct dvb_adapter         adapter;
92	struct dvb_demux           demux;
93	struct dmxdev              dmxdev;
94	struct dmx_frontend        fe_hw;
95	struct dmx_frontend        fe_mem;
96	struct dvb_net             net;
97
98	/* Due to DRX-K - probably need changes */
99	int (*gate_ctrl)(struct dvb_frontend *fe, int gate);
100	struct semaphore      pll_mutex;
101	bool			dont_attach_fe1;
102	int			lna_gpio;
103	struct i2c_client	*i2c_client_demod;
104	struct i2c_client	*i2c_client_tuner;
105	struct i2c_client	*i2c_client_sec;
106};
107
108static inline void print_err_status(struct em28xx *dev,
109				    int packet, int status)
110{
111	char *errmsg = "Unknown";
112
113	switch (status) {
114	case -ENOENT:
115		errmsg = "unlinked synchronously";
116		break;
117	case -ECONNRESET:
118		errmsg = "unlinked asynchronously";
119		break;
120	case -ENOSR:
121		errmsg = "Buffer error (overrun)";
122		break;
123	case -EPIPE:
124		errmsg = "Stalled (device not responding)";
125		break;
126	case -EOVERFLOW:
127		errmsg = "Babble (bad cable?)";
128		break;
129	case -EPROTO:
130		errmsg = "Bit-stuff error (bad cable?)";
131		break;
132	case -EILSEQ:
133		errmsg = "CRC/Timeout (could be anything)";
134		break;
135	case -ETIME:
136		errmsg = "Device does not respond";
137		break;
138	}
139	if (packet < 0) {
140		dprintk(1, "URB status %d [%s].\n", status, errmsg);
141	} else {
142		dprintk(1, "URB packet %d, status %d [%s].\n",
143			packet, status, errmsg);
144	}
145}
146
147static inline int em28xx_dvb_urb_data_copy(struct em28xx *dev, struct urb *urb)
148{
149	int xfer_bulk, num_packets, i;
150
151	if (!dev)
152		return 0;
153
154	if (dev->disconnected)
155		return 0;
156
157	if (urb->status < 0)
158		print_err_status(dev, -1, urb->status);
159
160	xfer_bulk = usb_pipebulk(urb->pipe);
161
162	if (xfer_bulk) /* bulk */
163		num_packets = 1;
164	else /* isoc */
165		num_packets = urb->number_of_packets;
166
167	for (i = 0; i < num_packets; i++) {
168		if (xfer_bulk) {
169			if (urb->status < 0) {
170				print_err_status(dev, i, urb->status);
171				if (urb->status != -EPROTO)
172					continue;
173			}
174			if (!urb->actual_length)
175				continue;
176			dvb_dmx_swfilter(&dev->dvb->demux, urb->transfer_buffer,
177					 urb->actual_length);
178		} else {
179			if (urb->iso_frame_desc[i].status < 0) {
180				print_err_status(dev, i,
181						 urb->iso_frame_desc[i].status);
182				if (urb->iso_frame_desc[i].status != -EPROTO)
183					continue;
184			}
185			if (!urb->iso_frame_desc[i].actual_length)
186				continue;
187			dvb_dmx_swfilter(&dev->dvb->demux,
188					 urb->transfer_buffer +
189					 urb->iso_frame_desc[i].offset,
190					 urb->iso_frame_desc[i].actual_length);
191		}
192	}
193
194	return 0;
195}
196
197static int em28xx_start_streaming(struct em28xx_dvb *dvb)
198{
199	int rc;
200	struct em28xx_i2c_bus *i2c_bus = dvb->adapter.priv;
201	struct em28xx *dev = i2c_bus->dev;
202	struct usb_device *udev = interface_to_usbdev(dev->intf);
203	int dvb_max_packet_size, packet_multiplier, dvb_alt;
204
205	if (dev->dvb_xfer_bulk) {
206		if (!dev->dvb_ep_bulk)
207			return -ENODEV;
208		dvb_max_packet_size = 512; /* USB 2.0 spec */
209		packet_multiplier = EM28XX_DVB_BULK_PACKET_MULTIPLIER;
210		dvb_alt = 0;
211	} else { /* isoc */
212		if (!dev->dvb_ep_isoc)
213			return -ENODEV;
214		dvb_max_packet_size = dev->dvb_max_pkt_size_isoc;
215		if (dvb_max_packet_size < 0)
216			return dvb_max_packet_size;
217		packet_multiplier = EM28XX_DVB_NUM_ISOC_PACKETS;
218		dvb_alt = dev->dvb_alt_isoc;
219	}
220
221	if (!dev->board.has_dual_ts)
222		usb_set_interface(udev, dev->ifnum, dvb_alt);
223
224	rc = em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
225	if (rc < 0)
226		return rc;
227
228	dprintk(1, "Using %d buffers each with %d x %d bytes, alternate %d\n",
229		EM28XX_DVB_NUM_BUFS,
230		packet_multiplier,
231		dvb_max_packet_size, dvb_alt);
232
233	return em28xx_init_usb_xfer(dev, EM28XX_DIGITAL_MODE,
234				    dev->dvb_xfer_bulk,
235				    EM28XX_DVB_NUM_BUFS,
236				    dvb_max_packet_size,
237				    packet_multiplier,
238				    em28xx_dvb_urb_data_copy);
239}
240
241static int em28xx_stop_streaming(struct em28xx_dvb *dvb)
242{
243	struct em28xx_i2c_bus *i2c_bus = dvb->adapter.priv;
244	struct em28xx *dev = i2c_bus->dev;
245
246	em28xx_stop_urbs(dev);
247
248	return 0;
249}
250
251static int em28xx_start_feed(struct dvb_demux_feed *feed)
252{
253	struct dvb_demux *demux  = feed->demux;
254	struct em28xx_dvb *dvb = demux->priv;
255	int rc, ret;
256
257	if (!demux->dmx.frontend)
258		return -EINVAL;
259
260	mutex_lock(&dvb->lock);
261	dvb->nfeeds++;
262	rc = dvb->nfeeds;
263
264	if (dvb->nfeeds == 1) {
265		ret = em28xx_start_streaming(dvb);
266		if (ret < 0)
267			rc = ret;
268	}
269
270	mutex_unlock(&dvb->lock);
271	return rc;
272}
273
274static int em28xx_stop_feed(struct dvb_demux_feed *feed)
275{
276	struct dvb_demux *demux  = feed->demux;
277	struct em28xx_dvb *dvb = demux->priv;
278	int err = 0;
279
280	mutex_lock(&dvb->lock);
281	dvb->nfeeds--;
282
283	if (!dvb->nfeeds)
284		err = em28xx_stop_streaming(dvb);
285
286	mutex_unlock(&dvb->lock);
287	return err;
288}
289
290/* ------------------------------------------------------------------ */
291static int em28xx_dvb_bus_ctrl(struct dvb_frontend *fe, int acquire)
292{
293	struct em28xx_i2c_bus *i2c_bus = fe->dvb->priv;
294	struct em28xx *dev = i2c_bus->dev;
295
296	if (acquire)
297		return em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
298	else
299		return em28xx_set_mode(dev, EM28XX_SUSPEND);
300}
301
302/* ------------------------------------------------------------------ */
303
304static struct lgdt330x_config em2880_lgdt3303_dev = {
305	.demod_chip = LGDT3303,
306};
307
308static struct lgdt3305_config em2870_lgdt3304_dev = {
309	.i2c_addr           = 0x0e,
310	.demod_chip         = LGDT3304,
311	.spectral_inversion = 1,
312	.deny_i2c_rptr      = 1,
313	.mpeg_mode          = LGDT3305_MPEG_PARALLEL,
314	.tpclk_edge         = LGDT3305_TPCLK_FALLING_EDGE,
315	.tpvalid_polarity   = LGDT3305_TP_VALID_HIGH,
316	.vsb_if_khz         = 3250,
317	.qam_if_khz         = 4000,
318};
319
320static struct lgdt3305_config em2874_lgdt3305_dev = {
321	.i2c_addr           = 0x0e,
322	.demod_chip         = LGDT3305,
323	.spectral_inversion = 1,
324	.deny_i2c_rptr      = 0,
325	.mpeg_mode          = LGDT3305_MPEG_SERIAL,
326	.tpclk_edge         = LGDT3305_TPCLK_FALLING_EDGE,
327	.tpvalid_polarity   = LGDT3305_TP_VALID_HIGH,
328	.vsb_if_khz         = 3250,
329	.qam_if_khz         = 4000,
330};
331
332static struct lgdt3305_config em2874_lgdt3305_nogate_dev = {
333	.i2c_addr           = 0x0e,
334	.demod_chip         = LGDT3305,
335	.spectral_inversion = 1,
336	.deny_i2c_rptr      = 1,
337	.mpeg_mode          = LGDT3305_MPEG_SERIAL,
338	.tpclk_edge         = LGDT3305_TPCLK_FALLING_EDGE,
339	.tpvalid_polarity   = LGDT3305_TP_VALID_HIGH,
340	.vsb_if_khz         = 3600,
341	.qam_if_khz         = 3600,
342};
343
344static struct s921_config sharp_isdbt = {
345	.demod_address = 0x30 >> 1
346};
347
348static struct zl10353_config em28xx_zl10353_with_xc3028 = {
349	.demod_address = (0x1e >> 1),
350	.no_tuner = 1,
351	.parallel_ts = 1,
352	.if2 = 45600,
353};
354
355static struct s5h1409_config em28xx_s5h1409_with_xc3028 = {
356	.demod_address = 0x32 >> 1,
357	.output_mode   = S5H1409_PARALLEL_OUTPUT,
358	.gpio          = S5H1409_GPIO_OFF,
359	.inversion     = S5H1409_INVERSION_OFF,
360	.status_mode   = S5H1409_DEMODLOCKING,
361	.mpeg_timing   = S5H1409_MPEGTIMING_CONTINUOUS_NONINVERTING_CLOCK
362};
363
364static struct tda18271_std_map kworld_a340_std_map = {
365	.atsc_6   = { .if_freq = 3250, .agc_mode = 3, .std = 0,
366		      .if_lvl = 1, .rfagc_top = 0x37, },
367	.qam_6    = { .if_freq = 4000, .agc_mode = 3, .std = 1,
368		      .if_lvl = 1, .rfagc_top = 0x37, },
369};
370
371static struct tda18271_config kworld_a340_config = {
372	.std_map           = &kworld_a340_std_map,
373};
374
375static struct tda18271_config kworld_ub435q_v2_config = {
376	.std_map	= &kworld_a340_std_map,
377	.gate		= TDA18271_GATE_DIGITAL,
378};
379
380static struct tda18212_config kworld_ub435q_v3_config = {
381	.if_atsc_vsb	= 3600,
382	.if_atsc_qam	= 3600,
383};
384
385static struct zl10353_config em28xx_zl10353_xc3028_no_i2c_gate = {
386	.demod_address = (0x1e >> 1),
387	.no_tuner = 1,
388	.disable_i2c_gate_ctrl = 1,
389	.parallel_ts = 1,
390	.if2 = 45600,
391};
392
393static struct drxd_config em28xx_drxd = {
394	.demod_address = 0x70,
395	.demod_revision = 0xa2,
396	.pll_type = DRXD_PLL_NONE,
397	.clock = 12000,
398	.insert_rs_byte = 1,
399	.IF = 42800000,
400	.disable_i2c_gate_ctrl = 1,
401};
402
403static struct drxk_config terratec_h5_drxk = {
404	.adr = 0x29,
405	.single_master = 1,
406	.no_i2c_bridge = 1,
407	.microcode_name = "dvb-usb-terratec-h5-drxk.fw",
408	.qam_demod_parameter_count = 2,
409};
410
411static struct drxk_config hauppauge_930c_drxk = {
412	.adr = 0x29,
413	.single_master = 1,
414	.no_i2c_bridge = 1,
415	.microcode_name = "dvb-usb-hauppauge-hvr930c-drxk.fw",
416	.chunk_size = 56,
417	.qam_demod_parameter_count = 2,
418};
419
420static struct drxk_config terratec_htc_stick_drxk = {
421	.adr = 0x29,
422	.single_master = 1,
423	.no_i2c_bridge = 1,
424	.microcode_name = "dvb-usb-terratec-htc-stick-drxk.fw",
425	.chunk_size = 54,
426	.qam_demod_parameter_count = 2,
427	/* Required for the antenna_gpio to disable LNA. */
428	.antenna_dvbt = true,
429	/* The windows driver uses the same. This will disable LNA. */
430	.antenna_gpio = 0x6,
431};
432
433static struct drxk_config maxmedia_ub425_tc_drxk = {
434	.adr = 0x29,
435	.single_master = 1,
436	.no_i2c_bridge = 1,
437	.microcode_name = "dvb-demod-drxk-01.fw",
438	.chunk_size = 62,
439	.qam_demod_parameter_count = 2,
440};
441
442static struct drxk_config pctv_520e_drxk = {
443	.adr = 0x29,
444	.single_master = 1,
445	.microcode_name = "dvb-demod-drxk-pctv.fw",
446	.qam_demod_parameter_count = 2,
447	.chunk_size = 58,
448	.antenna_dvbt = true, /* disable LNA */
449	.antenna_gpio = (1 << 2), /* disable LNA */
450};
451
452static int drxk_gate_ctrl(struct dvb_frontend *fe, int enable)
453{
454	struct em28xx_dvb *dvb = fe->sec_priv;
455	int status;
456
457	if (!dvb)
458		return -EINVAL;
459
460	if (enable) {
461		down(&dvb->pll_mutex);
462		status = dvb->gate_ctrl(fe, 1);
463	} else {
464		status = dvb->gate_ctrl(fe, 0);
465		up(&dvb->pll_mutex);
466	}
467	return status;
468}
469
470static void hauppauge_hvr930c_init(struct em28xx *dev)
471{
472	int i;
473
474	static const struct em28xx_reg_seq hauppauge_hvr930c_init[] = {
475		{EM2874_R80_GPIO_P0_CTRL,	0xff,	0xff,	0x65},
476		{EM2874_R80_GPIO_P0_CTRL,	0xfb,	0xff,	0x32},
477		{EM2874_R80_GPIO_P0_CTRL,	0xff,	0xff,	0xb8},
478		{	-1,			-1,	-1,	-1},
479	};
480	static const struct em28xx_reg_seq hauppauge_hvr930c_end[] = {
481		{EM2874_R80_GPIO_P0_CTRL,	0xef,	0xff,	0x01},
482		{EM2874_R80_GPIO_P0_CTRL,	0xaf,	0xff,	0x65},
483		{EM2874_R80_GPIO_P0_CTRL,	0xef,	0xff,	0x76},
484		{EM2874_R80_GPIO_P0_CTRL,	0xef,	0xff,	0x01},
485		{EM2874_R80_GPIO_P0_CTRL,	0xcf,	0xff,	0x0b},
486		{EM2874_R80_GPIO_P0_CTRL,	0xef,	0xff,	0x40},
487
488		{EM2874_R80_GPIO_P0_CTRL,	0xcf,	0xff,	0x65},
489		{EM2874_R80_GPIO_P0_CTRL,	0xef,	0xff,	0x65},
490		{EM2874_R80_GPIO_P0_CTRL,	0xcf,	0xff,	0x0b},
491		{EM2874_R80_GPIO_P0_CTRL,	0xef,	0xff,	0x65},
492
493		{	-1,			-1,	-1,	-1},
494	};
495
496	static const struct {
497		unsigned char r[4];
498		int len;
499	} regs[] = {
500		{{ 0x06, 0x02, 0x00, 0x31 }, 4},
501		{{ 0x01, 0x02 }, 2},
502		{{ 0x01, 0x02, 0x00, 0xc6 }, 4},
503		{{ 0x01, 0x00 }, 2},
504		{{ 0x01, 0x00, 0xff, 0xaf }, 4},
505		{{ 0x01, 0x00, 0x03, 0xa0 }, 4},
506		{{ 0x01, 0x00 }, 2},
507		{{ 0x01, 0x00, 0x73, 0xaf }, 4},
508		{{ 0x04, 0x00 }, 2},
509		{{ 0x00, 0x04 }, 2},
510		{{ 0x00, 0x04, 0x00, 0x0a }, 4},
511		{{ 0x04, 0x14 }, 2},
512		{{ 0x04, 0x14, 0x00, 0x00 }, 4},
513	};
514
515	em28xx_gpio_set(dev, hauppauge_hvr930c_init);
516	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x40);
517	usleep_range(10000, 11000);
518	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x44);
519	usleep_range(10000, 11000);
520
521	dev->i2c_client[dev->def_i2c_bus].addr = 0x82 >> 1;
522
523	for (i = 0; i < ARRAY_SIZE(regs); i++)
524		i2c_master_send(&dev->i2c_client[dev->def_i2c_bus],
525				regs[i].r, regs[i].len);
526	em28xx_gpio_set(dev, hauppauge_hvr930c_end);
527
528	msleep(100);
529
530	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x44);
531	msleep(30);
532
533	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x45);
534	usleep_range(10000, 11000);
535}
536
537static void terratec_h5_init(struct em28xx *dev)
538{
539	int i;
540	static const struct em28xx_reg_seq terratec_h5_init[] = {
541		{EM2820_R08_GPIO_CTRL,		0xff,	0xff,	10},
542		{EM2874_R80_GPIO_P0_CTRL,	0xf6,	0xff,	100},
543		{EM2874_R80_GPIO_P0_CTRL,	0xf2,	0xff,	50},
544		{EM2874_R80_GPIO_P0_CTRL,	0xf6,	0xff,	100},
545		{	-1,			-1,	-1,	-1},
546	};
547	static const struct em28xx_reg_seq terratec_h5_end[] = {
548		{EM2874_R80_GPIO_P0_CTRL,	0xe6,	0xff,	100},
549		{EM2874_R80_GPIO_P0_CTRL,	0xa6,	0xff,	50},
550		{EM2874_R80_GPIO_P0_CTRL,	0xe6,	0xff,	100},
551		{	-1,			-1,	-1,	-1},
552	};
553	static const struct {
554		unsigned char r[4];
555		int len;
556	} regs[] = {
557		{{ 0x06, 0x02, 0x00, 0x31 }, 4},
558		{{ 0x01, 0x02 }, 2},
559		{{ 0x01, 0x02, 0x00, 0xc6 }, 4},
560		{{ 0x01, 0x00 }, 2},
561		{{ 0x01, 0x00, 0xff, 0xaf }, 4},
562		{{ 0x01, 0x00, 0x03, 0xa0 }, 4},
563		{{ 0x01, 0x00 }, 2},
564		{{ 0x01, 0x00, 0x73, 0xaf }, 4},
565		{{ 0x04, 0x00 }, 2},
566		{{ 0x00, 0x04 }, 2},
567		{{ 0x00, 0x04, 0x00, 0x0a }, 4},
568		{{ 0x04, 0x14 }, 2},
569		{{ 0x04, 0x14, 0x00, 0x00 }, 4},
570	};
571
572	em28xx_gpio_set(dev, terratec_h5_init);
573	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x40);
574	usleep_range(10000, 11000);
575	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x45);
576	usleep_range(10000, 11000);
577
578	dev->i2c_client[dev->def_i2c_bus].addr = 0x82 >> 1;
579
580	for (i = 0; i < ARRAY_SIZE(regs); i++)
581		i2c_master_send(&dev->i2c_client[dev->def_i2c_bus],
582				regs[i].r, regs[i].len);
583	em28xx_gpio_set(dev, terratec_h5_end);
584};
585
586static void terratec_htc_stick_init(struct em28xx *dev)
587{
588	int i;
589
590	/*
591	 * GPIO configuration:
592	 * 0xff: unknown (does not affect DVB-T).
593	 * 0xf6: DRX-K (demodulator).
594	 * 0xe6: unknown (does not affect DVB-T).
595	 * 0xb6: unknown (does not affect DVB-T).
596	 */
597	static const struct em28xx_reg_seq terratec_htc_stick_init[] = {
598		{EM2820_R08_GPIO_CTRL,		0xff,	0xff,	10},
599		{EM2874_R80_GPIO_P0_CTRL,	0xf6,	0xff,	100},
600		{EM2874_R80_GPIO_P0_CTRL,	0xe6,	0xff,	50},
601		{EM2874_R80_GPIO_P0_CTRL,	0xf6,	0xff,	100},
602		{	-1,			-1,	-1,	-1},
603	};
604	static const struct em28xx_reg_seq terratec_htc_stick_end[] = {
605		{EM2874_R80_GPIO_P0_CTRL,	0xb6,	0xff,	100},
606		{EM2874_R80_GPIO_P0_CTRL,	0xf6,	0xff,	50},
607		{	-1,			-1,	-1,	-1},
608	};
609
610	/*
611	 * Init the analog decoder (not yet supported), but
612	 * it's probably still a good idea.
613	 */
614	static const struct {
615		unsigned char r[4];
616		int len;
617	} regs[] = {
618		{{ 0x06, 0x02, 0x00, 0x31 }, 4},
619		{{ 0x01, 0x02 }, 2},
620		{{ 0x01, 0x02, 0x00, 0xc6 }, 4},
621		{{ 0x01, 0x00 }, 2},
622		{{ 0x01, 0x00, 0xff, 0xaf }, 4},
623	};
624
625	em28xx_gpio_set(dev, terratec_htc_stick_init);
626
627	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x40);
628	usleep_range(10000, 11000);
629	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x44);
630	usleep_range(10000, 11000);
631
632	dev->i2c_client[dev->def_i2c_bus].addr = 0x82 >> 1;
633
634	for (i = 0; i < ARRAY_SIZE(regs); i++)
635		i2c_master_send(&dev->i2c_client[dev->def_i2c_bus],
636				regs[i].r, regs[i].len);
637
638	em28xx_gpio_set(dev, terratec_htc_stick_end);
639};
640
641static void terratec_htc_usb_xs_init(struct em28xx *dev)
642{
643	int i;
644
645	static const struct em28xx_reg_seq terratec_htc_usb_xs_init[] = {
646		{EM2820_R08_GPIO_CTRL,		0xff,	0xff,	10},
647		{EM2874_R80_GPIO_P0_CTRL,	0xb2,	0xff,	100},
648		{EM2874_R80_GPIO_P0_CTRL,	0xb2,	0xff,	50},
649		{EM2874_R80_GPIO_P0_CTRL,	0xb6,	0xff,	100},
650		{	-1,			-1,	-1,	-1},
651	};
652	static const struct em28xx_reg_seq terratec_htc_usb_xs_end[] = {
653		{EM2874_R80_GPIO_P0_CTRL,	0xa6,	0xff,	100},
654		{EM2874_R80_GPIO_P0_CTRL,	0xa6,	0xff,	50},
655		{EM2874_R80_GPIO_P0_CTRL,	0xe6,	0xff,	100},
656		{	-1,			-1,	-1,	-1},
657	};
658
659	/*
660	 * Init the analog decoder (not yet supported), but
661	 * it's probably still a good idea.
662	 */
663	static const struct {
664		unsigned char r[4];
665		int len;
666	} regs[] = {
667		{{ 0x06, 0x02, 0x00, 0x31 }, 4},
668		{{ 0x01, 0x02 }, 2},
669		{{ 0x01, 0x02, 0x00, 0xc6 }, 4},
670		{{ 0x01, 0x00 }, 2},
671		{{ 0x01, 0x00, 0xff, 0xaf }, 4},
672		{{ 0x01, 0x00, 0x03, 0xa0 }, 4},
673		{{ 0x01, 0x00 }, 2},
674		{{ 0x01, 0x00, 0x73, 0xaf }, 4},
675		{{ 0x04, 0x00 }, 2},
676		{{ 0x00, 0x04 }, 2},
677		{{ 0x00, 0x04, 0x00, 0x0a }, 4},
678		{{ 0x04, 0x14 }, 2},
679		{{ 0x04, 0x14, 0x00, 0x00 }, 4},
680	};
681
682	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x40);
683
684	em28xx_gpio_set(dev, terratec_htc_usb_xs_init);
685
686	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x40);
687	usleep_range(10000, 11000);
688	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x44);
689	usleep_range(10000, 11000);
690
691	dev->i2c_client[dev->def_i2c_bus].addr = 0x82 >> 1;
692
693	for (i = 0; i < ARRAY_SIZE(regs); i++)
694		i2c_master_send(&dev->i2c_client[dev->def_i2c_bus],
695				regs[i].r, regs[i].len);
696
697	em28xx_gpio_set(dev, terratec_htc_usb_xs_end);
698};
699
700static void pctv_520e_init(struct em28xx *dev)
701{
702	/*
703	 * Init AVF4910B analog decoder. Looks like I2C traffic to
704	 * digital demodulator and tuner are routed via AVF4910B.
705	 */
706	int i;
707	static const struct {
708		unsigned char r[4];
709		int len;
710	} regs[] = {
711		{{ 0x06, 0x02, 0x00, 0x31 }, 4},
712		{{ 0x01, 0x02 }, 2},
713		{{ 0x01, 0x02, 0x00, 0xc6 }, 4},
714		{{ 0x01, 0x00 }, 2},
715		{{ 0x01, 0x00, 0xff, 0xaf }, 4},
716		{{ 0x01, 0x00, 0x03, 0xa0 }, 4},
717		{{ 0x01, 0x00 }, 2},
718		{{ 0x01, 0x00, 0x73, 0xaf }, 4},
719	};
720
721	dev->i2c_client[dev->def_i2c_bus].addr = 0x82 >> 1; /* 0x41 */
722
723	for (i = 0; i < ARRAY_SIZE(regs); i++)
724		i2c_master_send(&dev->i2c_client[dev->def_i2c_bus],
725				regs[i].r, regs[i].len);
726};
727
728static int em28xx_pctv_290e_set_lna(struct dvb_frontend *fe)
729{
730	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
731	struct em28xx_i2c_bus *i2c_bus = fe->dvb->priv;
732	struct em28xx *dev = i2c_bus->dev;
733#ifdef CONFIG_GPIOLIB
734	struct em28xx_dvb *dvb = dev->dvb;
735	int ret;
736	unsigned long flags;
737
738	if (c->lna == 1)
739		flags = GPIOF_OUT_INIT_HIGH; /* enable LNA */
740	else
741		flags = GPIOF_OUT_INIT_LOW; /* disable LNA */
742
743	ret = gpio_request_one(dvb->lna_gpio, flags, NULL);
744	if (ret)
745		dev_err(&dev->intf->dev, "gpio request failed %d\n", ret);
746	else
747		gpio_free(dvb->lna_gpio);
748
749	return ret;
750#else
751	dev_warn(&dev->intf->dev, "%s: LNA control is disabled (lna=%u)\n",
752		 KBUILD_MODNAME, c->lna);
753	return 0;
754#endif
755}
756
757static int em28xx_pctv_292e_set_lna(struct dvb_frontend *fe)
758{
759	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
760	struct em28xx_i2c_bus *i2c_bus = fe->dvb->priv;
761	struct em28xx *dev = i2c_bus->dev;
762	u8 lna;
763
764	if (c->lna == 1)
765		lna = 0x01;
766	else
767		lna = 0x00;
768
769	return em28xx_write_reg_bits(dev, EM2874_R80_GPIO_P0_CTRL, lna, 0x01);
770}
771
772static int em28xx_mt352_terratec_xs_init(struct dvb_frontend *fe)
773{
774	/* Values extracted from a USB trace of the Terratec Windows driver */
775	static u8 clock_config[]   = { CLOCK_CTL,  0x38, 0x2c };
776	static u8 reset[]          = { RESET,      0x80 };
777	static u8 adc_ctl_1_cfg[]  = { ADC_CTL_1,  0x40 };
778	static u8 agc_cfg[]        = { AGC_TARGET, 0x28, 0xa0 };
779	static u8 input_freq_cfg[] = { INPUT_FREQ_1, 0x31, 0xb8 };
780	static u8 rs_err_cfg[]     = { RS_ERR_PER_1, 0x00, 0x4d };
781	static u8 capt_range_cfg[] = { CAPT_RANGE, 0x32 };
782	static u8 trl_nom_cfg[]    = { TRL_NOMINAL_RATE_1, 0x64, 0x00 };
783	static u8 tps_given_cfg[]  = { TPS_GIVEN_1, 0x40, 0x80, 0x50 };
784	static u8 tuner_go[]       = { TUNER_GO, 0x01};
785
786	mt352_write(fe, clock_config,   sizeof(clock_config));
787	usleep_range(200, 250);
788	mt352_write(fe, reset,          sizeof(reset));
789	mt352_write(fe, adc_ctl_1_cfg,  sizeof(adc_ctl_1_cfg));
790	mt352_write(fe, agc_cfg,        sizeof(agc_cfg));
791	mt352_write(fe, input_freq_cfg, sizeof(input_freq_cfg));
792	mt352_write(fe, rs_err_cfg,     sizeof(rs_err_cfg));
793	mt352_write(fe, capt_range_cfg, sizeof(capt_range_cfg));
794	mt352_write(fe, trl_nom_cfg,    sizeof(trl_nom_cfg));
795	mt352_write(fe, tps_given_cfg,  sizeof(tps_given_cfg));
796	mt352_write(fe, tuner_go,       sizeof(tuner_go));
797	return 0;
798}
799
800static void px_bcud_init(struct em28xx *dev)
801{
802	int i;
803	static const struct {
804		unsigned char r[4];
805		int len;
806	} regs1[] = {
807		{{ 0x0e, 0x77 }, 2},
808		{{ 0x0f, 0x77 }, 2},
809		{{ 0x03, 0x90 }, 2},
810	}, regs2[] = {
811		{{ 0x07, 0x01 }, 2},
812		{{ 0x08, 0x10 }, 2},
813		{{ 0x13, 0x00 }, 2},
814		{{ 0x17, 0x00 }, 2},
815		{{ 0x03, 0x01 }, 2},
816		{{ 0x10, 0xb1 }, 2},
817		{{ 0x11, 0x40 }, 2},
818		{{ 0x85, 0x7a }, 2},
819		{{ 0x87, 0x04 }, 2},
820	};
821	static const struct em28xx_reg_seq gpio[] = {
822		{EM28XX_R06_I2C_CLK,		0x40,	0xff,	300},
823		{EM2874_R80_GPIO_P0_CTRL,	0xfd,	0xff,	60},
824		{EM28XX_R15_RGAIN,		0x20,	0xff,	0},
825		{EM28XX_R16_GGAIN,		0x20,	0xff,	0},
826		{EM28XX_R17_BGAIN,		0x20,	0xff,	0},
827		{EM28XX_R18_ROFFSET,		0x00,	0xff,	0},
828		{EM28XX_R19_GOFFSET,		0x00,	0xff,	0},
829		{EM28XX_R1A_BOFFSET,		0x00,	0xff,	0},
830		{EM28XX_R23_UOFFSET,		0x00,	0xff,	0},
831		{EM28XX_R24_VOFFSET,		0x00,	0xff,	0},
832		{EM28XX_R26_COMPR,		0x00,	0xff,	0},
833		{0x13,				0x08,	0xff,	0},
834		{EM28XX_R12_VINENABLE,		0x27,	0xff,	0},
835		{EM28XX_R0C_USBSUSP,		0x10,	0xff,	0},
836		{EM28XX_R27_OUTFMT,		0x00,	0xff,	0},
837		{EM28XX_R10_VINMODE,		0x00,	0xff,	0},
838		{EM28XX_R11_VINCTRL,		0x11,	0xff,	0},
839		{EM2874_R50_IR_CONFIG,		0x01,	0xff,	0},
840		{EM2874_R5F_TS_ENABLE,		0x80,	0xff,	0},
841		{EM28XX_R06_I2C_CLK,		0x46,	0xff,	0},
842	};
843	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x46);
844	/* sleeping ISDB-T */
845	dev->dvb->i2c_client_demod->addr = 0x14;
846	for (i = 0; i < ARRAY_SIZE(regs1); i++)
847		i2c_master_send(dev->dvb->i2c_client_demod,
848				regs1[i].r, regs1[i].len);
849	/* sleeping ISDB-S */
850	dev->dvb->i2c_client_demod->addr = 0x15;
851	for (i = 0; i < ARRAY_SIZE(regs2); i++)
852		i2c_master_send(dev->dvb->i2c_client_demod, regs2[i].r,
853				regs2[i].len);
854	for (i = 0; i < ARRAY_SIZE(gpio); i++) {
855		em28xx_write_reg_bits(dev, gpio[i].reg, gpio[i].val,
856				      gpio[i].mask);
857		if (gpio[i].sleep > 0)
858			msleep(gpio[i].sleep);
859	}
860};
861
862static struct mt352_config terratec_xs_mt352_cfg = {
863	.demod_address = (0x1e >> 1),
864	.no_tuner = 1,
865	.if2 = 45600,
866	.demod_init = em28xx_mt352_terratec_xs_init,
867};
868
869static struct tda10023_config em28xx_tda10023_config = {
870	.demod_address = 0x0c,
871	.invert = 1,
872};
873
874static struct cxd2820r_config em28xx_cxd2820r_config = {
875	.i2c_address = (0xd8 >> 1),
876	.ts_mode = CXD2820R_TS_SERIAL,
877};
878
879static struct tda18271_config em28xx_cxd2820r_tda18271_config = {
880	.output_opt = TDA18271_OUTPUT_LT_OFF,
881	.gate = TDA18271_GATE_DIGITAL,
882};
883
884static struct zl10353_config em28xx_zl10353_no_i2c_gate_dev = {
885	.demod_address = (0x1e >> 1),
886	.disable_i2c_gate_ctrl = 1,
887	.no_tuner = 1,
888	.parallel_ts = 1,
889};
890
891static struct mt2060_config em28xx_mt2060_config = {
892	.i2c_address = 0x60,
893};
894
895static struct qt1010_config em28xx_qt1010_config = {
896	.i2c_address = 0x62
897};
898
899static const struct mb86a20s_config c3tech_duo_mb86a20s_config = {
900	.demod_address = 0x10,
901	.is_serial = true,
902};
903
904static struct tda18271_std_map mb86a20s_tda18271_config = {
905	.dvbt_6   = { .if_freq = 4000, .agc_mode = 3, .std = 4,
906		      .if_lvl = 1, .rfagc_top = 0x37, },
907};
908
909static struct tda18271_config c3tech_duo_tda18271_config = {
910	.std_map = &mb86a20s_tda18271_config,
911	.gate    = TDA18271_GATE_DIGITAL,
912	.small_i2c = TDA18271_03_BYTE_CHUNK_INIT,
913};
914
915static struct tda18271_std_map drx_j_std_map = {
916	.atsc_6   = { .if_freq = 5000, .agc_mode = 3, .std = 0, .if_lvl = 1,
917		      .rfagc_top = 0x37, },
918	.qam_6    = { .if_freq = 5380, .agc_mode = 3, .std = 3, .if_lvl = 1,
919		      .rfagc_top = 0x37, },
920};
921
922static struct tda18271_config pinnacle_80e_dvb_config = {
923	.std_map = &drx_j_std_map,
924	.gate    = TDA18271_GATE_DIGITAL,
925	.role    = TDA18271_MASTER,
926};
927
928static struct lgdt3306a_config hauppauge_01595_lgdt3306a_config = {
929	.qam_if_khz         = 4000,
930	.vsb_if_khz         = 3250,
931	.spectral_inversion = 0,
932	.deny_i2c_rptr      = 0,
933	.mpeg_mode          = LGDT3306A_MPEG_SERIAL,
934	.tpclk_edge         = LGDT3306A_TPCLK_RISING_EDGE,
935	.tpvalid_polarity   = LGDT3306A_TP_VALID_HIGH,
936	.xtalMHz            = 25,
937};
938
939/* ------------------------------------------------------------------ */
940
941static noinline_for_stack int em28xx_attach_xc3028(u8 addr, struct em28xx *dev)
942{
943	struct dvb_frontend *fe;
944	struct xc2028_config cfg;
945	struct xc2028_ctrl ctl;
946
947	memset(&cfg, 0, sizeof(cfg));
948	cfg.i2c_adap  = &dev->i2c_adap[dev->def_i2c_bus];
949	cfg.i2c_addr  = addr;
950
951	memset(&ctl, 0, sizeof(ctl));
952	em28xx_setup_xc3028(dev, &ctl);
953	cfg.ctrl  = &ctl;
954
955	if (!dev->dvb->fe[0]) {
956		dev_err(&dev->intf->dev,
957			"dvb frontend not attached. Can't attach xc3028\n");
958		return -EINVAL;
959	}
960
961	fe = dvb_attach(xc2028_attach, dev->dvb->fe[0], &cfg);
962	if (!fe) {
963		dev_err(&dev->intf->dev, "xc3028 attach failed\n");
964		dvb_frontend_detach(dev->dvb->fe[0]);
965		dev->dvb->fe[0] = NULL;
966		return -EINVAL;
967	}
968
969	dev_info(&dev->intf->dev, "xc3028 attached\n");
970
971	return 0;
972}
973
974/* ------------------------------------------------------------------ */
975
976static int em28xx_register_dvb(struct em28xx_dvb *dvb, struct module *module,
977			       struct em28xx *dev, struct device *device)
978{
979	int result;
980	bool create_rf_connector = false;
981
982	mutex_init(&dvb->lock);
983
984	/* register adapter */
985	result = dvb_register_adapter(&dvb->adapter,
986				      dev_name(&dev->intf->dev), module,
987				      device, adapter_nr);
988	if (result < 0) {
989		dev_warn(&dev->intf->dev,
990			 "dvb_register_adapter failed (errno = %d)\n",
991			 result);
992		goto fail_adapter;
993	}
994#ifdef CONFIG_MEDIA_CONTROLLER_DVB
995	dvb->adapter.mdev = dev->media_dev;
996#endif
997
998	/* Ensure all frontends negotiate bus access */
999	dvb->fe[0]->ops.ts_bus_ctrl = em28xx_dvb_bus_ctrl;
1000	if (dvb->fe[1])
1001		dvb->fe[1]->ops.ts_bus_ctrl = em28xx_dvb_bus_ctrl;
1002
1003	dvb->adapter.priv = &dev->i2c_bus[dev->def_i2c_bus];
1004
1005	/* register frontend */
1006	result = dvb_register_frontend(&dvb->adapter, dvb->fe[0]);
1007	if (result < 0) {
1008		dev_warn(&dev->intf->dev,
1009			 "dvb_register_frontend failed (errno = %d)\n",
1010			 result);
1011		goto fail_frontend0;
1012	}
1013
1014	/* register 2nd frontend */
1015	if (dvb->fe[1]) {
1016		result = dvb_register_frontend(&dvb->adapter, dvb->fe[1]);
1017		if (result < 0) {
1018			dev_warn(&dev->intf->dev,
1019				 "2nd dvb_register_frontend failed (errno = %d)\n",
1020				 result);
1021			goto fail_frontend1;
1022		}
1023	}
1024
1025	/* register demux stuff */
1026	dvb->demux.dmx.capabilities =
1027		DMX_TS_FILTERING | DMX_SECTION_FILTERING |
1028		DMX_MEMORY_BASED_FILTERING;
1029	dvb->demux.priv       = dvb;
1030	dvb->demux.filternum  = 256;
1031	dvb->demux.feednum    = 256;
1032	dvb->demux.start_feed = em28xx_start_feed;
1033	dvb->demux.stop_feed  = em28xx_stop_feed;
1034
1035	result = dvb_dmx_init(&dvb->demux);
1036	if (result < 0) {
1037		dev_warn(&dev->intf->dev,
1038			 "dvb_dmx_init failed (errno = %d)\n",
1039			 result);
1040		goto fail_dmx;
1041	}
1042
1043	dvb->dmxdev.filternum    = 256;
1044	dvb->dmxdev.demux        = &dvb->demux.dmx;
1045	dvb->dmxdev.capabilities = 0;
1046	result = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter);
1047	if (result < 0) {
1048		dev_warn(&dev->intf->dev,
1049			 "dvb_dmxdev_init failed (errno = %d)\n",
1050			 result);
1051		goto fail_dmxdev;
1052	}
1053
1054	dvb->fe_hw.source = DMX_FRONTEND_0;
1055	result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_hw);
1056	if (result < 0) {
1057		dev_warn(&dev->intf->dev,
1058			 "add_frontend failed (DMX_FRONTEND_0, errno = %d)\n",
1059			 result);
1060		goto fail_fe_hw;
1061	}
1062
1063	dvb->fe_mem.source = DMX_MEMORY_FE;
1064	result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_mem);
1065	if (result < 0) {
1066		dev_warn(&dev->intf->dev,
1067			 "add_frontend failed (DMX_MEMORY_FE, errno = %d)\n",
1068			 result);
1069		goto fail_fe_mem;
1070	}
1071
1072	result = dvb->demux.dmx.connect_frontend(&dvb->demux.dmx, &dvb->fe_hw);
1073	if (result < 0) {
1074		dev_warn(&dev->intf->dev,
1075			 "connect_frontend failed (errno = %d)\n",
1076			 result);
1077		goto fail_fe_conn;
1078	}
1079
1080	/* register network adapter */
1081	dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx);
1082
1083	/* If the analog part won't create RF connectors, DVB will do it */
1084	if (!dev->has_video || dev->tuner_type == TUNER_ABSENT)
1085		create_rf_connector = true;
1086
1087	result = dvb_create_media_graph(&dvb->adapter, create_rf_connector);
1088	if (result < 0)
1089		goto fail_create_graph;
1090
1091	return 0;
1092
1093fail_create_graph:
1094	dvb_net_release(&dvb->net);
1095fail_fe_conn:
1096	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
1097fail_fe_mem:
1098	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
1099fail_fe_hw:
1100	dvb_dmxdev_release(&dvb->dmxdev);
1101fail_dmxdev:
1102	dvb_dmx_release(&dvb->demux);
1103fail_dmx:
1104	if (dvb->fe[1])
1105		dvb_unregister_frontend(dvb->fe[1]);
1106	dvb_unregister_frontend(dvb->fe[0]);
1107fail_frontend1:
1108	if (dvb->fe[1])
1109		dvb_frontend_detach(dvb->fe[1]);
1110fail_frontend0:
1111	dvb_frontend_detach(dvb->fe[0]);
1112	dvb_unregister_adapter(&dvb->adapter);
1113fail_adapter:
1114	return result;
1115}
1116
1117static void em28xx_unregister_dvb(struct em28xx_dvb *dvb)
1118{
1119	dvb_net_release(&dvb->net);
1120	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
1121	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
1122	dvb_dmxdev_release(&dvb->dmxdev);
1123	dvb_dmx_release(&dvb->demux);
1124	if (dvb->fe[1])
1125		dvb_unregister_frontend(dvb->fe[1]);
1126	dvb_unregister_frontend(dvb->fe[0]);
1127	if (dvb->fe[1] && !dvb->dont_attach_fe1)
1128		dvb_frontend_detach(dvb->fe[1]);
1129	dvb_frontend_detach(dvb->fe[0]);
1130	dvb_unregister_adapter(&dvb->adapter);
1131}
1132
1133static int em28174_dvb_init_pctv_460e(struct em28xx *dev)
1134{
1135	struct em28xx_dvb *dvb = dev->dvb;
1136	struct tda10071_platform_data tda10071_pdata = {};
1137	struct a8293_platform_data a8293_pdata = {};
1138
1139	/* attach demod + tuner combo */
1140	tda10071_pdata.clk = 40444000; /* 40.444 MHz */
1141	tda10071_pdata.i2c_wr_max = 64;
1142	tda10071_pdata.ts_mode = TDA10071_TS_SERIAL;
1143	tda10071_pdata.pll_multiplier = 20;
1144	tda10071_pdata.tuner_i2c_addr = 0x14;
1145
1146	dvb->i2c_client_demod = dvb_module_probe("tda10071", "tda10071_cx24118",
1147						 &dev->i2c_adap[dev->def_i2c_bus],
1148						 0x55, &tda10071_pdata);
1149	if (!dvb->i2c_client_demod)
1150		return -ENODEV;
1151
1152	dvb->fe[0] = tda10071_pdata.get_dvb_frontend(dvb->i2c_client_demod);
1153
1154	/* attach SEC */
1155	a8293_pdata.dvb_frontend = dvb->fe[0];
1156
1157	dvb->i2c_client_sec = dvb_module_probe("a8293", NULL,
1158					       &dev->i2c_adap[dev->def_i2c_bus],
1159					       0x08, &a8293_pdata);
1160	if (!dvb->i2c_client_sec) {
1161		dvb_module_release(dvb->i2c_client_demod);
1162		return -ENODEV;
1163	}
1164
1165	return 0;
1166}
1167
1168static int em28178_dvb_init_pctv_461e(struct em28xx *dev)
1169{
1170	struct em28xx_dvb *dvb = dev->dvb;
1171	struct i2c_adapter *i2c_adapter;
1172	struct m88ds3103_platform_data m88ds3103_pdata = {};
1173	struct ts2020_config ts2020_config = {};
1174	struct a8293_platform_data a8293_pdata = {};
1175
1176	/* attach demod */
1177	m88ds3103_pdata.clk = 27000000;
1178	m88ds3103_pdata.i2c_wr_max = 33;
1179	m88ds3103_pdata.ts_mode = M88DS3103_TS_PARALLEL;
1180	m88ds3103_pdata.ts_clk = 16000;
1181	m88ds3103_pdata.ts_clk_pol = 1;
1182	m88ds3103_pdata.agc = 0x99;
1183
1184	dvb->i2c_client_demod = dvb_module_probe("m88ds3103", NULL,
1185						 &dev->i2c_adap[dev->def_i2c_bus],
1186						 0x68, &m88ds3103_pdata);
1187	if (!dvb->i2c_client_demod)
1188		return -ENODEV;
1189
1190	dvb->fe[0] = m88ds3103_pdata.get_dvb_frontend(dvb->i2c_client_demod);
1191	i2c_adapter = m88ds3103_pdata.get_i2c_adapter(dvb->i2c_client_demod);
1192
1193	/* attach tuner */
1194	ts2020_config.fe = dvb->fe[0];
1195
1196	dvb->i2c_client_tuner = dvb_module_probe("ts2020", "ts2022",
1197						 i2c_adapter,
1198						 0x60, &ts2020_config);
1199	if (!dvb->i2c_client_tuner) {
1200		dvb_module_release(dvb->i2c_client_demod);
1201		return -ENODEV;
1202	}
1203
1204	/* delegate signal strength measurement to tuner */
1205	dvb->fe[0]->ops.read_signal_strength =
1206			dvb->fe[0]->ops.tuner_ops.get_rf_strength;
1207
1208	/* attach SEC */
1209	a8293_pdata.dvb_frontend = dvb->fe[0];
1210	dvb->i2c_client_sec = dvb_module_probe("a8293", NULL,
1211					       &dev->i2c_adap[dev->def_i2c_bus],
1212					       0x08, &a8293_pdata);
1213	if (!dvb->i2c_client_sec) {
1214		dvb_module_release(dvb->i2c_client_tuner);
1215		dvb_module_release(dvb->i2c_client_demod);
1216		return -ENODEV;
1217	}
1218
1219	return 0;
1220}
1221
1222static int em28178_dvb_init_pctv_461e_v2(struct em28xx *dev)
1223{
1224	struct em28xx_dvb *dvb = dev->dvb;
1225	struct i2c_adapter *i2c_adapter;
1226	struct m88ds3103_platform_data m88ds3103_pdata = {};
1227	struct ts2020_config ts2020_config = {};
1228	struct a8293_platform_data a8293_pdata = {};
1229
1230	/* attach demod */
1231	m88ds3103_pdata.clk = 27000000;
1232	m88ds3103_pdata.i2c_wr_max = 33;
1233	m88ds3103_pdata.ts_mode = M88DS3103_TS_PARALLEL;
1234	m88ds3103_pdata.ts_clk = 16000;
1235	m88ds3103_pdata.ts_clk_pol = 0;
1236	m88ds3103_pdata.agc = 0x99;
1237	m88ds3103_pdata.agc_inv = 0;
1238	m88ds3103_pdata.spec_inv = 0;
1239	dvb->i2c_client_demod = dvb_module_probe("m88ds3103", "m88ds3103b",
1240						 &dev->i2c_adap[dev->def_i2c_bus],
1241						 0x6a, &m88ds3103_pdata);
1242
1243	if (!dvb->i2c_client_demod)
1244		return -ENODEV;
1245
1246	dvb->fe[0] = m88ds3103_pdata.get_dvb_frontend(dvb->i2c_client_demod);
1247	i2c_adapter = m88ds3103_pdata.get_i2c_adapter(dvb->i2c_client_demod);
1248
1249	/* attach tuner */
1250	ts2020_config.fe = dvb->fe[0];
1251	dvb->i2c_client_tuner = dvb_module_probe("ts2020", "ts2022",
1252						 i2c_adapter,
1253						 0x60, &ts2020_config);
1254	if (!dvb->i2c_client_tuner) {
1255		dvb_module_release(dvb->i2c_client_demod);
1256		return -ENODEV;
1257	}
1258
1259	/* delegate signal strength measurement to tuner */
1260	dvb->fe[0]->ops.read_signal_strength =
1261			dvb->fe[0]->ops.tuner_ops.get_rf_strength;
1262
1263	/* attach SEC */
1264	a8293_pdata.dvb_frontend = dvb->fe[0];
1265	dvb->i2c_client_sec = dvb_module_probe("a8293", NULL,
1266					       &dev->i2c_adap[dev->def_i2c_bus],
1267					       0x08, &a8293_pdata);
1268	if (!dvb->i2c_client_sec) {
1269		dvb_module_release(dvb->i2c_client_tuner);
1270		dvb_module_release(dvb->i2c_client_demod);
1271		return -ENODEV;
1272	}
1273
1274	return 0;
1275}
1276
1277static int em28178_dvb_init_pctv_292e(struct em28xx *dev)
1278{
1279	struct em28xx_dvb *dvb = dev->dvb;
1280	struct i2c_adapter *adapter;
1281	struct si2168_config si2168_config = {};
1282	struct si2157_config si2157_config = {};
1283
1284	/* attach demod */
1285	si2168_config.i2c_adapter = &adapter;
1286	si2168_config.fe = &dvb->fe[0];
1287	si2168_config.ts_mode = SI2168_TS_PARALLEL;
1288	si2168_config.spectral_inversion = true;
1289
1290	dvb->i2c_client_demod = dvb_module_probe("si2168", NULL,
1291						 &dev->i2c_adap[dev->def_i2c_bus],
1292						 0x64, &si2168_config);
1293	if (!dvb->i2c_client_demod)
1294		return -ENODEV;
1295
1296	/* attach tuner */
1297	si2157_config.fe = dvb->fe[0];
1298	si2157_config.if_port = 1;
1299#ifdef CONFIG_MEDIA_CONTROLLER_DVB
1300	si2157_config.mdev = dev->media_dev;
1301#endif
1302	dvb->i2c_client_tuner = dvb_module_probe("si2157", NULL,
1303						 adapter,
1304						 0x60, &si2157_config);
1305	if (!dvb->i2c_client_tuner) {
1306		dvb_module_release(dvb->i2c_client_demod);
1307		return -ENODEV;
1308	}
1309	dvb->fe[0]->ops.set_lna = em28xx_pctv_292e_set_lna;
1310
1311	return 0;
1312}
1313
1314static int em28178_dvb_init_terratec_t2_stick_hd(struct em28xx *dev)
1315{
1316	struct em28xx_dvb *dvb = dev->dvb;
1317	struct i2c_adapter *adapter;
1318	struct si2168_config si2168_config = {};
1319	struct si2157_config si2157_config = {};
1320
1321	/* attach demod */
1322	si2168_config.i2c_adapter = &adapter;
1323	si2168_config.fe = &dvb->fe[0];
1324	si2168_config.ts_mode = SI2168_TS_PARALLEL;
1325
1326	dvb->i2c_client_demod = dvb_module_probe("si2168", NULL,
1327						 &dev->i2c_adap[dev->def_i2c_bus],
1328						 0x64, &si2168_config);
1329	if (!dvb->i2c_client_demod)
1330		return -ENODEV;
1331
1332	/* attach tuner */
1333	memset(&si2157_config, 0, sizeof(si2157_config));
1334	si2157_config.fe = dvb->fe[0];
1335	si2157_config.if_port = 0;
1336#ifdef CONFIG_MEDIA_CONTROLLER_DVB
1337	si2157_config.mdev = dev->media_dev;
1338#endif
1339	dvb->i2c_client_tuner = dvb_module_probe("si2157", "si2146",
1340						 adapter,
1341						 0x60, &si2157_config);
1342	if (!dvb->i2c_client_tuner) {
1343		dvb_module_release(dvb->i2c_client_demod);
1344		return -ENODEV;
1345	}
1346
1347	return 0;
1348}
1349
1350static int em28178_dvb_init_plex_px_bcud(struct em28xx *dev)
1351{
1352	struct em28xx_dvb *dvb = dev->dvb;
1353	struct tc90522_config tc90522_config = {};
1354	struct qm1d1c0042_config qm1d1c0042_config = {};
1355
1356	/* attach demod */
1357	dvb->i2c_client_demod = dvb_module_probe("tc90522", "tc90522sat",
1358						 &dev->i2c_adap[dev->def_i2c_bus],
1359						 0x15, &tc90522_config);
1360	if (!dvb->i2c_client_demod)
1361		return -ENODEV;
1362
1363	/* attach tuner */
1364	qm1d1c0042_config.fe = tc90522_config.fe;
1365	qm1d1c0042_config.lpf = 1;
1366
1367	dvb->i2c_client_tuner = dvb_module_probe("qm1d1c0042", NULL,
1368						 tc90522_config.tuner_i2c,
1369						 0x61, &qm1d1c0042_config);
1370	if (!dvb->i2c_client_tuner) {
1371		dvb_module_release(dvb->i2c_client_demod);
1372		return -ENODEV;
1373	}
1374
1375	dvb->fe[0] = tc90522_config.fe;
1376	px_bcud_init(dev);
1377
1378	return 0;
1379}
1380
1381static int em28174_dvb_init_hauppauge_wintv_dualhd_dvb(struct em28xx *dev)
1382{
1383	struct em28xx_dvb *dvb = dev->dvb;
1384	struct i2c_adapter *adapter;
1385	struct si2168_config si2168_config = {};
1386	struct si2157_config si2157_config = {};
1387	unsigned char addr;
1388
1389	/* attach demod */
1390	si2168_config.i2c_adapter = &adapter;
1391	si2168_config.fe = &dvb->fe[0];
1392	si2168_config.ts_mode = SI2168_TS_SERIAL;
1393	si2168_config.spectral_inversion = true;
1394	addr = (dev->ts == PRIMARY_TS) ? 0x64 : 0x67;
1395
1396	dvb->i2c_client_demod = dvb_module_probe("si2168", NULL,
1397						 &dev->i2c_adap[dev->def_i2c_bus],
1398						 addr, &si2168_config);
1399	if (!dvb->i2c_client_demod)
1400		return -ENODEV;
1401
1402	/* attach tuner */
1403	memset(&si2157_config, 0, sizeof(si2157_config));
1404	si2157_config.fe = dvb->fe[0];
1405	si2157_config.if_port = 1;
1406#ifdef CONFIG_MEDIA_CONTROLLER_DVB
1407	si2157_config.mdev = dev->media_dev;
1408#endif
1409	addr = (dev->ts == PRIMARY_TS) ? 0x60 : 0x63;
1410
1411	dvb->i2c_client_tuner = dvb_module_probe("si2157", NULL,
1412						 adapter,
1413						 addr, &si2157_config);
1414	if (!dvb->i2c_client_tuner) {
1415		dvb_module_release(dvb->i2c_client_demod);
1416		return -ENODEV;
1417	}
1418
1419	return 0;
1420}
1421
1422static int em28174_dvb_init_hauppauge_wintv_dualhd_01595(struct em28xx *dev)
1423{
1424	struct em28xx_dvb *dvb = dev->dvb;
1425	struct i2c_adapter *adapter;
1426	struct lgdt3306a_config lgdt3306a_config =  {};
1427	struct si2157_config si2157_config = {};
1428	unsigned char addr;
1429
1430	/* attach demod */
1431	lgdt3306a_config = hauppauge_01595_lgdt3306a_config;
1432	lgdt3306a_config.fe = &dvb->fe[0];
1433	lgdt3306a_config.i2c_adapter = &adapter;
1434	addr = (dev->ts == PRIMARY_TS) ? 0x59 : 0x0e;
1435
1436	dvb->i2c_client_demod = dvb_module_probe("lgdt3306a", NULL,
1437						 &dev->i2c_adap[dev->def_i2c_bus],
1438						 addr, &lgdt3306a_config);
1439	if (!dvb->i2c_client_demod)
1440		return -ENODEV;
1441
1442	/* attach tuner */
1443	si2157_config.fe = dvb->fe[0];
1444	si2157_config.if_port = 1;
1445	si2157_config.inversion = 1;
1446#ifdef CONFIG_MEDIA_CONTROLLER_DVB
1447	si2157_config.mdev = dev->media_dev;
1448#endif
1449	addr = (dev->ts == PRIMARY_TS) ? 0x60 : 0x62;
1450
1451	dvb->i2c_client_tuner = dvb_module_probe("si2157", NULL,
1452						 adapter,
1453						 addr, &si2157_config);
1454	if (!dvb->i2c_client_tuner) {
1455		dvb_module_release(dvb->i2c_client_demod);
1456		return -ENODEV;
1457	}
1458
1459	return 0;
1460}
1461
1462static int em28xx_dvb_init(struct em28xx *dev)
1463{
1464	int result = 0, dvb_alt = 0;
1465	struct em28xx_dvb *dvb;
1466	struct usb_device *udev;
1467
1468	if (dev->is_audio_only) {
1469		/* Shouldn't initialize IR for this interface */
1470		return 0;
1471	}
1472
1473	if (!dev->board.has_dvb) {
1474		/* This device does not support the extension */
1475		return 0;
1476	}
1477
1478	dev_info(&dev->intf->dev, "Binding DVB extension\n");
1479
1480	dvb = kzalloc(sizeof(*dvb), GFP_KERNEL);
1481	if (!dvb)
1482		return -ENOMEM;
1483
1484	dev->dvb = dvb;
1485	dvb->fe[0] = NULL;
1486	dvb->fe[1] = NULL;
1487
1488	/* pre-allocate DVB usb transfer buffers */
1489	if (dev->dvb_xfer_bulk) {
1490		result = em28xx_alloc_urbs(dev, EM28XX_DIGITAL_MODE,
1491					   dev->dvb_xfer_bulk,
1492					   EM28XX_DVB_NUM_BUFS,
1493					   512,
1494					   EM28XX_DVB_BULK_PACKET_MULTIPLIER);
1495	} else {
1496		result = em28xx_alloc_urbs(dev, EM28XX_DIGITAL_MODE,
1497					   dev->dvb_xfer_bulk,
1498					   EM28XX_DVB_NUM_BUFS,
1499					   dev->dvb_max_pkt_size_isoc,
1500					   EM28XX_DVB_NUM_ISOC_PACKETS);
1501	}
1502	if (result) {
1503		dev_err(&dev->intf->dev,
1504			"failed to pre-allocate USB transfer buffers for DVB.\n");
1505		kfree(dvb);
1506		dev->dvb = NULL;
1507		return result;
1508	}
1509
1510	mutex_lock(&dev->lock);
1511	em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
1512	/* init frontend */
1513	switch (dev->model) {
1514	case EM2874_BOARD_LEADERSHIP_ISDBT:
1515		dvb->fe[0] = dvb_attach(s921_attach,
1516					&sharp_isdbt,
1517					&dev->i2c_adap[dev->def_i2c_bus]);
1518
1519		if (!dvb->fe[0]) {
1520			result = -EINVAL;
1521			goto out_free;
1522		}
1523
1524		break;
1525	case EM2883_BOARD_HAUPPAUGE_WINTV_HVR_850:
1526	case EM2883_BOARD_HAUPPAUGE_WINTV_HVR_950:
1527	case EM2880_BOARD_PINNACLE_PCTV_HD_PRO:
1528	case EM2880_BOARD_AMD_ATI_TV_WONDER_HD_600:
1529		dvb->fe[0] = dvb_attach(lgdt330x_attach,
1530					&em2880_lgdt3303_dev,
1531					0x0e,
1532					&dev->i2c_adap[dev->def_i2c_bus]);
1533		if (em28xx_attach_xc3028(0x61, dev) < 0) {
1534			result = -EINVAL;
1535			goto out_free;
1536		}
1537		break;
1538	case EM2880_BOARD_KWORLD_DVB_310U:
1539		dvb->fe[0] = dvb_attach(zl10353_attach,
1540					&em28xx_zl10353_with_xc3028,
1541					&dev->i2c_adap[dev->def_i2c_bus]);
1542		if (em28xx_attach_xc3028(0x61, dev) < 0) {
1543			result = -EINVAL;
1544			goto out_free;
1545		}
1546		break;
1547	case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900:
1548	case EM2882_BOARD_TERRATEC_HYBRID_XS:
1549	case EM2880_BOARD_EMPIRE_DUAL_TV:
1550	case EM2882_BOARD_ZOLID_HYBRID_TV_STICK:
1551		dvb->fe[0] = dvb_attach(zl10353_attach,
1552					&em28xx_zl10353_xc3028_no_i2c_gate,
1553					&dev->i2c_adap[dev->def_i2c_bus]);
1554		if (em28xx_attach_xc3028(0x61, dev) < 0) {
1555			result = -EINVAL;
1556			goto out_free;
1557		}
1558		break;
1559	case EM2880_BOARD_TERRATEC_HYBRID_XS:
1560	case EM2880_BOARD_TERRATEC_HYBRID_XS_FR:
1561	case EM2881_BOARD_PINNACLE_HYBRID_PRO:
1562	case EM2882_BOARD_DIKOM_DK300:
1563	case EM2882_BOARD_KWORLD_VS_DVBT:
1564		/*
1565		 * Those boards could have either a zl10353 or a mt352.
1566		 * If the chip id isn't for zl10353, try mt352.
1567		 */
1568		dvb->fe[0] = dvb_attach(zl10353_attach,
1569					&em28xx_zl10353_xc3028_no_i2c_gate,
1570					&dev->i2c_adap[dev->def_i2c_bus]);
1571		if (!dvb->fe[0])
1572			dvb->fe[0] = dvb_attach(mt352_attach,
1573						&terratec_xs_mt352_cfg,
1574						&dev->i2c_adap[dev->def_i2c_bus]);
1575
1576		if (em28xx_attach_xc3028(0x61, dev) < 0) {
1577			result = -EINVAL;
1578			goto out_free;
1579		}
1580		break;
1581	case EM2870_BOARD_TERRATEC_XS_MT2060:
1582		dvb->fe[0] = dvb_attach(zl10353_attach,
1583					&em28xx_zl10353_no_i2c_gate_dev,
1584					&dev->i2c_adap[dev->def_i2c_bus]);
1585		if (dvb->fe[0]) {
1586			dvb_attach(mt2060_attach, dvb->fe[0],
1587				   &dev->i2c_adap[dev->def_i2c_bus],
1588				   &em28xx_mt2060_config, 1220);
1589		}
1590		break;
1591	case EM2870_BOARD_KWORLD_355U:
1592		dvb->fe[0] = dvb_attach(zl10353_attach,
1593					&em28xx_zl10353_no_i2c_gate_dev,
1594					&dev->i2c_adap[dev->def_i2c_bus]);
1595		if (dvb->fe[0])
1596			dvb_attach(qt1010_attach, dvb->fe[0],
1597				   &dev->i2c_adap[dev->def_i2c_bus],
1598				   &em28xx_qt1010_config);
1599		break;
1600	case EM2883_BOARD_KWORLD_HYBRID_330U:
1601	case EM2882_BOARD_EVGA_INDTUBE:
1602		dvb->fe[0] = dvb_attach(s5h1409_attach,
1603					&em28xx_s5h1409_with_xc3028,
1604					&dev->i2c_adap[dev->def_i2c_bus]);
1605		if (em28xx_attach_xc3028(0x61, dev) < 0) {
1606			result = -EINVAL;
1607			goto out_free;
1608		}
1609		break;
1610	case EM2882_BOARD_KWORLD_ATSC_315U:
1611		dvb->fe[0] = dvb_attach(lgdt330x_attach,
1612					&em2880_lgdt3303_dev,
1613					0x0e,
1614					&dev->i2c_adap[dev->def_i2c_bus]);
1615		if (dvb->fe[0]) {
1616			if (!dvb_attach(simple_tuner_attach, dvb->fe[0],
1617					&dev->i2c_adap[dev->def_i2c_bus],
1618					0x61, TUNER_THOMSON_DTT761X)) {
1619				result = -EINVAL;
1620				goto out_free;
1621			}
1622		}
1623		break;
1624	case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900_R2:
1625	case EM2882_BOARD_PINNACLE_HYBRID_PRO_330E:
1626		dvb->fe[0] = dvb_attach(drxd_attach, &em28xx_drxd, NULL,
1627					&dev->i2c_adap[dev->def_i2c_bus],
1628					&dev->intf->dev);
1629		if (em28xx_attach_xc3028(0x61, dev) < 0) {
1630			result = -EINVAL;
1631			goto out_free;
1632		}
1633		break;
1634	case EM2870_BOARD_REDDO_DVB_C_USB_BOX:
1635		/* Philips CU1216L NIM (Philips TDA10023 + Infineon TUA6034) */
1636		dvb->fe[0] = dvb_attach(tda10023_attach,
1637					&em28xx_tda10023_config,
1638					&dev->i2c_adap[dev->def_i2c_bus],
1639					0x48);
1640		if (dvb->fe[0]) {
1641			if (!dvb_attach(simple_tuner_attach, dvb->fe[0],
1642					&dev->i2c_adap[dev->def_i2c_bus],
1643					0x60, TUNER_PHILIPS_CU1216L)) {
1644				result = -EINVAL;
1645				goto out_free;
1646			}
1647		}
1648		break;
1649	case EM2870_BOARD_KWORLD_A340:
1650		dvb->fe[0] = dvb_attach(lgdt3305_attach,
1651					&em2870_lgdt3304_dev,
1652					&dev->i2c_adap[dev->def_i2c_bus]);
1653		if (!dvb->fe[0]) {
1654			result = -EINVAL;
1655			goto out_free;
1656		}
1657		if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
1658				&dev->i2c_adap[dev->def_i2c_bus],
1659				&kworld_a340_config)) {
1660			dvb_frontend_detach(dvb->fe[0]);
1661			result = -EINVAL;
1662			goto out_free;
1663		}
1664		break;
1665	case EM28174_BOARD_PCTV_290E:
1666		/* set default GPIO0 for LNA, used if GPIOLIB is undefined */
1667		dvb->lna_gpio = CXD2820R_GPIO_E | CXD2820R_GPIO_O |
1668				CXD2820R_GPIO_L;
1669		dvb->fe[0] = dvb_attach(cxd2820r_attach,
1670					&em28xx_cxd2820r_config,
1671					&dev->i2c_adap[dev->def_i2c_bus],
1672					&dvb->lna_gpio);
1673		if (dvb->fe[0]) {
1674			/* FE 0 attach tuner */
1675			if (!dvb_attach(tda18271_attach,
1676					dvb->fe[0],
1677					0x60,
1678					&dev->i2c_adap[dev->def_i2c_bus],
1679					&em28xx_cxd2820r_tda18271_config)) {
1680				dvb_frontend_detach(dvb->fe[0]);
1681				result = -EINVAL;
1682				goto out_free;
1683			}
1684
1685#ifdef CONFIG_GPIOLIB
1686			/* enable LNA for DVB-T, DVB-T2 and DVB-C */
1687			result = gpio_request_one(dvb->lna_gpio,
1688						  GPIOF_OUT_INIT_LOW, NULL);
1689			if (result)
1690				dev_err(&dev->intf->dev,
1691					"gpio request failed %d\n",
1692					result);
1693			else
1694				gpio_free(dvb->lna_gpio);
1695
1696			result = 0; /* continue even set LNA fails */
1697#endif
1698			dvb->fe[0]->ops.set_lna = em28xx_pctv_290e_set_lna;
1699		}
1700
1701		break;
1702	case EM2884_BOARD_HAUPPAUGE_WINTV_HVR_930C:
1703	{
1704		struct xc5000_config cfg = {};
1705
1706		hauppauge_hvr930c_init(dev);
1707
1708		dvb->fe[0] = dvb_attach(drxk_attach,
1709					&hauppauge_930c_drxk,
1710					&dev->i2c_adap[dev->def_i2c_bus]);
1711		if (!dvb->fe[0]) {
1712			result = -EINVAL;
1713			goto out_free;
1714		}
1715		/* FIXME: do we need a pll semaphore? */
1716		dvb->fe[0]->sec_priv = dvb;
1717		sema_init(&dvb->pll_mutex, 1);
1718		dvb->gate_ctrl = dvb->fe[0]->ops.i2c_gate_ctrl;
1719		dvb->fe[0]->ops.i2c_gate_ctrl = drxk_gate_ctrl;
1720
1721		/* Attach xc5000 */
1722		cfg.i2c_address  = 0x61;
1723		cfg.if_khz = 4000;
1724
1725		if (dvb->fe[0]->ops.i2c_gate_ctrl)
1726			dvb->fe[0]->ops.i2c_gate_ctrl(dvb->fe[0], 1);
1727		if (!dvb_attach(xc5000_attach, dvb->fe[0],
1728				&dev->i2c_adap[dev->def_i2c_bus], &cfg)) {
1729			result = -EINVAL;
1730			goto out_free;
1731		}
1732		if (dvb->fe[0]->ops.i2c_gate_ctrl)
1733			dvb->fe[0]->ops.i2c_gate_ctrl(dvb->fe[0], 0);
1734
1735		break;
1736	}
1737	case EM2884_BOARD_TERRATEC_H5:
1738		terratec_h5_init(dev);
1739
1740		dvb->fe[0] = dvb_attach(drxk_attach, &terratec_h5_drxk,
1741					&dev->i2c_adap[dev->def_i2c_bus]);
1742		if (!dvb->fe[0]) {
1743			result = -EINVAL;
1744			goto out_free;
1745		}
1746		/* FIXME: do we need a pll semaphore? */
1747		dvb->fe[0]->sec_priv = dvb;
1748		sema_init(&dvb->pll_mutex, 1);
1749		dvb->gate_ctrl = dvb->fe[0]->ops.i2c_gate_ctrl;
1750		dvb->fe[0]->ops.i2c_gate_ctrl = drxk_gate_ctrl;
1751
1752		/* Attach tda18271 to DVB-C frontend */
1753		if (dvb->fe[0]->ops.i2c_gate_ctrl)
1754			dvb->fe[0]->ops.i2c_gate_ctrl(dvb->fe[0], 1);
1755		if (!dvb_attach(tda18271c2dd_attach, dvb->fe[0],
1756				&dev->i2c_adap[dev->def_i2c_bus], 0x60)) {
1757			result = -EINVAL;
1758			goto out_free;
1759		}
1760		if (dvb->fe[0]->ops.i2c_gate_ctrl)
1761			dvb->fe[0]->ops.i2c_gate_ctrl(dvb->fe[0], 0);
1762
1763		break;
1764	case EM2884_BOARD_C3TECH_DIGITAL_DUO:
1765		dvb->fe[0] = dvb_attach(mb86a20s_attach,
1766					&c3tech_duo_mb86a20s_config,
1767					&dev->i2c_adap[dev->def_i2c_bus]);
1768		if (dvb->fe[0])
1769			dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
1770				   &dev->i2c_adap[dev->def_i2c_bus],
1771				   &c3tech_duo_tda18271_config);
1772		break;
1773	case EM28174_BOARD_PCTV_460E:
1774		result = em28174_dvb_init_pctv_460e(dev);
1775		if (result)
1776			goto out_free;
1777		break;
1778	case EM2874_BOARD_DELOCK_61959:
1779	case EM2874_BOARD_MAXMEDIA_UB425_TC:
1780		/* attach demodulator */
1781		dvb->fe[0] = dvb_attach(drxk_attach, &maxmedia_ub425_tc_drxk,
1782					&dev->i2c_adap[dev->def_i2c_bus]);
1783
1784		if (dvb->fe[0]) {
1785			/* disable I2C-gate */
1786			dvb->fe[0]->ops.i2c_gate_ctrl = NULL;
1787
1788			/* attach tuner */
1789			if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
1790					&dev->i2c_adap[dev->def_i2c_bus],
1791					&em28xx_cxd2820r_tda18271_config)) {
1792				dvb_frontend_detach(dvb->fe[0]);
1793				result = -EINVAL;
1794				goto out_free;
1795			}
1796		}
1797		break;
1798	case EM2884_BOARD_PCTV_510E:
1799	case EM2884_BOARD_PCTV_520E:
1800		pctv_520e_init(dev);
1801
1802		/* attach demodulator */
1803		dvb->fe[0] = dvb_attach(drxk_attach, &pctv_520e_drxk,
1804					&dev->i2c_adap[dev->def_i2c_bus]);
1805
1806		if (dvb->fe[0]) {
1807			/* attach tuner */
1808			if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
1809					&dev->i2c_adap[dev->def_i2c_bus],
1810					&em28xx_cxd2820r_tda18271_config)) {
1811				dvb_frontend_detach(dvb->fe[0]);
1812				result = -EINVAL;
1813				goto out_free;
1814			}
1815		}
1816		break;
1817	case EM2884_BOARD_ELGATO_EYETV_HYBRID_2008:
1818	case EM2884_BOARD_CINERGY_HTC_STICK:
1819	case EM2884_BOARD_TERRATEC_H6:
1820		terratec_htc_stick_init(dev);
1821
1822		/* attach demodulator */
1823		dvb->fe[0] = dvb_attach(drxk_attach, &terratec_htc_stick_drxk,
1824					&dev->i2c_adap[dev->def_i2c_bus]);
1825		if (!dvb->fe[0]) {
1826			result = -EINVAL;
1827			goto out_free;
1828		}
1829
1830		/* Attach the demodulator. */
1831		if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
1832				&dev->i2c_adap[dev->def_i2c_bus],
1833				&em28xx_cxd2820r_tda18271_config)) {
1834			result = -EINVAL;
1835			goto out_free;
1836		}
1837		break;
1838	case EM2884_BOARD_TERRATEC_HTC_USB_XS:
1839		terratec_htc_usb_xs_init(dev);
1840
1841		/* attach demodulator */
1842		dvb->fe[0] = dvb_attach(drxk_attach, &terratec_htc_stick_drxk,
1843					&dev->i2c_adap[dev->def_i2c_bus]);
1844		if (!dvb->fe[0]) {
1845			result = -EINVAL;
1846			goto out_free;
1847		}
1848
1849		/* Attach the demodulator. */
1850		if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
1851				&dev->i2c_adap[dev->def_i2c_bus],
1852				&em28xx_cxd2820r_tda18271_config)) {
1853			result = -EINVAL;
1854			goto out_free;
1855		}
1856		break;
1857	case EM2874_BOARD_KWORLD_UB435Q_V2:
1858		dvb->fe[0] = dvb_attach(lgdt3305_attach,
1859					&em2874_lgdt3305_dev,
1860					&dev->i2c_adap[dev->def_i2c_bus]);
1861		if (!dvb->fe[0]) {
1862			result = -EINVAL;
1863			goto out_free;
1864		}
1865
1866		/* Attach the demodulator. */
1867		if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
1868				&dev->i2c_adap[dev->def_i2c_bus],
1869				&kworld_ub435q_v2_config)) {
1870			result = -EINVAL;
1871			goto out_free;
1872		}
1873		break;
1874	case EM2874_BOARD_KWORLD_UB435Q_V3:
1875	{
1876		struct i2c_adapter *adapter = &dev->i2c_adap[dev->def_i2c_bus];
1877
1878		dvb->fe[0] = dvb_attach(lgdt3305_attach,
1879					&em2874_lgdt3305_nogate_dev,
1880					&dev->i2c_adap[dev->def_i2c_bus]);
1881		if (!dvb->fe[0]) {
1882			result = -EINVAL;
1883			goto out_free;
1884		}
1885
1886		/* attach tuner */
1887		kworld_ub435q_v3_config.fe = dvb->fe[0];
1888
1889		dvb->i2c_client_tuner = dvb_module_probe("tda18212", NULL,
1890							 adapter, 0x60,
1891							 &kworld_ub435q_v3_config);
1892		if (!dvb->i2c_client_tuner) {
1893			dvb_frontend_detach(dvb->fe[0]);
1894			result = -ENODEV;
1895			goto out_free;
1896		}
1897		break;
1898	}
1899	case EM2874_BOARD_PCTV_HD_MINI_80E:
1900		dvb->fe[0] = dvb_attach(drx39xxj_attach,
1901					&dev->i2c_adap[dev->def_i2c_bus]);
1902		if (dvb->fe[0]) {
1903			dvb->fe[0] = dvb_attach(tda18271_attach, dvb->fe[0],
1904						0x60,
1905						&dev->i2c_adap[dev->def_i2c_bus],
1906						&pinnacle_80e_dvb_config);
1907			if (!dvb->fe[0]) {
1908				result = -EINVAL;
1909				goto out_free;
1910			}
1911		}
1912		break;
1913	case EM28178_BOARD_PCTV_461E:
1914		result = em28178_dvb_init_pctv_461e(dev);
1915		if (result)
1916			goto out_free;
1917		break;
1918	case EM28178_BOARD_PCTV_461E_V2:
1919		result = em28178_dvb_init_pctv_461e_v2(dev);
1920		if (result)
1921			goto out_free;
1922		break;
1923	case EM28178_BOARD_PCTV_292E:
1924		result = em28178_dvb_init_pctv_292e(dev);
1925		if (result)
1926			goto out_free;
1927		break;
1928	case EM28178_BOARD_TERRATEC_T2_STICK_HD:
1929		result = em28178_dvb_init_terratec_t2_stick_hd(dev);
1930		if (result)
1931			goto out_free;
1932		break;
1933	case EM28178_BOARD_PLEX_PX_BCUD:
1934		result = em28178_dvb_init_plex_px_bcud(dev);
1935		if (result)
1936			goto out_free;
1937		break;
1938	case EM28174_BOARD_HAUPPAUGE_WINTV_DUALHD_DVB:
1939		result = em28174_dvb_init_hauppauge_wintv_dualhd_dvb(dev);
1940		if (result)
1941			goto out_free;
1942		break;
1943	case EM28174_BOARD_HAUPPAUGE_WINTV_DUALHD_01595:
1944		result = em28174_dvb_init_hauppauge_wintv_dualhd_01595(dev);
1945		if (result)
1946			goto out_free;
1947		break;
1948	default:
1949		dev_err(&dev->intf->dev,
1950			"The frontend of your DVB/ATSC card isn't supported yet\n");
1951		break;
1952	}
1953	if (!dvb->fe[0]) {
1954		dev_err(&dev->intf->dev, "frontend initialization failed\n");
1955		result = -EINVAL;
1956		goto out_free;
1957	}
1958	/* define general-purpose callback pointer */
1959	dvb->fe[0]->callback = em28xx_tuner_callback;
1960	if (dvb->fe[1])
1961		dvb->fe[1]->callback = em28xx_tuner_callback;
1962
1963	/* register everything */
1964	result = em28xx_register_dvb(dvb, THIS_MODULE, dev, &dev->intf->dev);
1965
1966	if (result < 0)
1967		goto out_free;
1968
1969	if (dev->dvb_xfer_bulk) {
1970		dvb_alt = 0;
1971	} else { /* isoc */
1972		dvb_alt = dev->dvb_alt_isoc;
1973	}
1974
1975	udev = interface_to_usbdev(dev->intf);
1976	usb_set_interface(udev, dev->ifnum, dvb_alt);
1977	dev_info(&dev->intf->dev, "DVB extension successfully initialized\n");
1978
1979	kref_get(&dev->ref);
1980
1981ret:
1982	em28xx_set_mode(dev, EM28XX_SUSPEND);
1983	mutex_unlock(&dev->lock);
1984	return result;
1985
1986out_free:
1987	em28xx_uninit_usb_xfer(dev, EM28XX_DIGITAL_MODE);
1988	kfree(dvb);
1989	dev->dvb = NULL;
1990	goto ret;
1991}
1992
1993static inline void prevent_sleep(struct dvb_frontend_ops *ops)
1994{
1995	ops->set_voltage = NULL;
1996	ops->sleep = NULL;
1997	ops->tuner_ops.sleep = NULL;
1998}
1999
2000static int em28xx_dvb_fini(struct em28xx *dev)
2001{
2002	struct em28xx_dvb *dvb;
2003
2004	if (dev->is_audio_only) {
2005		/* Shouldn't initialize IR for this interface */
2006		return 0;
2007	}
2008
2009	if (!dev->board.has_dvb) {
2010		/* This device does not support the extension */
2011		return 0;
2012	}
2013
2014	if (!dev->dvb)
2015		return 0;
2016
2017	dev_info(&dev->intf->dev, "Closing DVB extension\n");
2018
2019	dvb = dev->dvb;
2020
2021	em28xx_uninit_usb_xfer(dev, EM28XX_DIGITAL_MODE);
2022
2023	if (dev->disconnected) {
2024		/*
2025		 * We cannot tell the device to sleep
2026		 * once it has been unplugged.
2027		 */
2028		if (dvb->fe[0]) {
2029			prevent_sleep(&dvb->fe[0]->ops);
2030			dvb->fe[0]->exit = DVB_FE_DEVICE_REMOVED;
2031		}
2032		if (dvb->fe[1]) {
2033			prevent_sleep(&dvb->fe[1]->ops);
2034			dvb->fe[1]->exit = DVB_FE_DEVICE_REMOVED;
2035		}
2036	}
2037
2038	em28xx_unregister_dvb(dvb);
2039
2040	/* release I2C module bindings */
2041	dvb_module_release(dvb->i2c_client_sec);
2042	dvb_module_release(dvb->i2c_client_tuner);
2043	dvb_module_release(dvb->i2c_client_demod);
2044
2045	kfree(dvb);
2046	dev->dvb = NULL;
2047	kref_put(&dev->ref, em28xx_free_device);
2048
2049	return 0;
2050}
2051
2052static int em28xx_dvb_suspend(struct em28xx *dev)
2053{
2054	int ret = 0;
2055
2056	if (dev->is_audio_only)
2057		return 0;
2058
2059	if (!dev->board.has_dvb)
2060		return 0;
2061
2062	dev_info(&dev->intf->dev, "Suspending DVB extension\n");
2063	if (dev->dvb) {
2064		struct em28xx_dvb *dvb = dev->dvb;
2065
2066		if (dvb->fe[0]) {
2067			ret = dvb_frontend_suspend(dvb->fe[0]);
2068			dev_info(&dev->intf->dev, "fe0 suspend %d\n", ret);
2069		}
2070		if (dvb->fe[1]) {
2071			dvb_frontend_suspend(dvb->fe[1]);
2072			dev_info(&dev->intf->dev, "fe1 suspend %d\n", ret);
2073		}
2074	}
2075
2076	return 0;
2077}
2078
2079static int em28xx_dvb_resume(struct em28xx *dev)
2080{
2081	int ret = 0;
2082
2083	if (dev->is_audio_only)
2084		return 0;
2085
2086	if (!dev->board.has_dvb)
2087		return 0;
2088
2089	dev_info(&dev->intf->dev, "Resuming DVB extension\n");
2090	if (dev->dvb) {
2091		struct em28xx_dvb *dvb = dev->dvb;
2092
2093		if (dvb->fe[0]) {
2094			ret = dvb_frontend_resume(dvb->fe[0]);
2095			dev_info(&dev->intf->dev, "fe0 resume %d\n", ret);
2096		}
2097
2098		if (dvb->fe[1]) {
2099			ret = dvb_frontend_resume(dvb->fe[1]);
2100			dev_info(&dev->intf->dev, "fe1 resume %d\n", ret);
2101		}
2102	}
2103
2104	return 0;
2105}
2106
2107static struct em28xx_ops dvb_ops = {
2108	.id   = EM28XX_DVB,
2109	.name = "Em28xx dvb Extension",
2110	.init = em28xx_dvb_init,
2111	.fini = em28xx_dvb_fini,
2112	.suspend = em28xx_dvb_suspend,
2113	.resume = em28xx_dvb_resume,
2114};
2115
2116static int __init em28xx_dvb_register(void)
2117{
2118	return em28xx_register_extension(&dvb_ops);
2119}
2120
2121static void __exit em28xx_dvb_unregister(void)
2122{
2123	em28xx_unregister_extension(&dvb_ops);
2124}
2125
2126module_init(em28xx_dvb_register);
2127module_exit(em28xx_dvb_unregister);
2128