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 #include "mxl692.h"
66 
67 MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@kernel.org>");
68 MODULE_LICENSE("GPL v2");
69 MODULE_DESCRIPTION(DRIVER_DESC " - digital TV interface");
70 MODULE_VERSION(EM28XX_VERSION);
71 
72 static unsigned int debug;
73 module_param(debug, int, 0644);
74 MODULE_PARM_DESC(debug, "enable debug messages [dvb]");
75 
76 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
77 
78 #define dprintk(level, fmt, arg...) do {				\
79 	if (debug >= level)						\
80 		dev_printk(KERN_DEBUG, &dev->intf->dev,			\
81 			   "dvb: " fmt, ## arg);			\
82 } while (0)
83 
84 struct em28xx_dvb {
85 	struct dvb_frontend        *fe[2];
86 
87 	/* feed count management */
88 	struct mutex               lock;
89 	int                        nfeeds;
90 
91 	/* general boilerplate stuff */
92 	struct dvb_adapter         adapter;
93 	struct dvb_demux           demux;
94 	struct dmxdev              dmxdev;
95 	struct dmx_frontend        fe_hw;
96 	struct dmx_frontend        fe_mem;
97 	struct dvb_net             net;
98 
99 	/* Due to DRX-K - probably need changes */
100 	int (*gate_ctrl)(struct dvb_frontend *fe, int gate);
101 	struct semaphore      pll_mutex;
102 	bool			dont_attach_fe1;
103 	int			lna_gpio;
104 	struct i2c_client	*i2c_client_demod;
105 	struct i2c_client	*i2c_client_tuner;
106 	struct i2c_client	*i2c_client_sec;
107 };
108 
109 static inline void print_err_status(struct em28xx *dev,
110 				    int packet, int status)
111 {
112 	char *errmsg = "Unknown";
113 
114 	switch (status) {
115 	case -ENOENT:
116 		errmsg = "unlinked synchronously";
117 		break;
118 	case -ECONNRESET:
119 		errmsg = "unlinked asynchronously";
120 		break;
121 	case -ENOSR:
122 		errmsg = "Buffer error (overrun)";
123 		break;
124 	case -EPIPE:
125 		errmsg = "Stalled (device not responding)";
126 		break;
127 	case -EOVERFLOW:
128 		errmsg = "Babble (bad cable?)";
129 		break;
130 	case -EPROTO:
131 		errmsg = "Bit-stuff error (bad cable?)";
132 		break;
133 	case -EILSEQ:
134 		errmsg = "CRC/Timeout (could be anything)";
135 		break;
136 	case -ETIME:
137 		errmsg = "Device does not respond";
138 		break;
139 	}
140 	if (packet < 0) {
141 		dprintk(1, "URB status %d [%s].\n", status, errmsg);
142 	} else {
143 		dprintk(1, "URB packet %d, status %d [%s].\n",
144 			packet, status, errmsg);
145 	}
146 }
147 
148 static inline int em28xx_dvb_urb_data_copy(struct em28xx *dev, struct urb *urb)
149 {
150 	int xfer_bulk, num_packets, i;
151 
152 	if (!dev)
153 		return 0;
154 
155 	if (dev->disconnected)
156 		return 0;
157 
158 	if (urb->status < 0)
159 		print_err_status(dev, -1, urb->status);
160 
161 	xfer_bulk = usb_pipebulk(urb->pipe);
162 
163 	if (xfer_bulk) /* bulk */
164 		num_packets = 1;
165 	else /* isoc */
166 		num_packets = urb->number_of_packets;
167 
168 	for (i = 0; i < num_packets; i++) {
169 		if (xfer_bulk) {
170 			if (urb->status < 0) {
171 				print_err_status(dev, i, urb->status);
172 				if (urb->status != -EPROTO)
173 					continue;
174 			}
175 			if (!urb->actual_length)
176 				continue;
177 			dvb_dmx_swfilter(&dev->dvb->demux, urb->transfer_buffer,
178 					 urb->actual_length);
179 		} else {
180 			if (urb->iso_frame_desc[i].status < 0) {
181 				print_err_status(dev, i,
182 						 urb->iso_frame_desc[i].status);
183 				if (urb->iso_frame_desc[i].status != -EPROTO)
184 					continue;
185 			}
186 			if (!urb->iso_frame_desc[i].actual_length)
187 				continue;
188 			dvb_dmx_swfilter(&dev->dvb->demux,
189 					 urb->transfer_buffer +
190 					 urb->iso_frame_desc[i].offset,
191 					 urb->iso_frame_desc[i].actual_length);
192 		}
193 	}
194 
195 	return 0;
196 }
197 
198 static int em28xx_start_streaming(struct em28xx_dvb *dvb)
199 {
200 	int rc;
201 	struct em28xx_i2c_bus *i2c_bus = dvb->adapter.priv;
202 	struct em28xx *dev = i2c_bus->dev;
203 	struct usb_device *udev = interface_to_usbdev(dev->intf);
204 	int dvb_max_packet_size, packet_multiplier, dvb_alt;
205 
206 	if (dev->dvb_xfer_bulk) {
207 		if (!dev->dvb_ep_bulk)
208 			return -ENODEV;
209 		dvb_max_packet_size = 512; /* USB 2.0 spec */
210 		packet_multiplier = EM28XX_DVB_BULK_PACKET_MULTIPLIER;
211 		dvb_alt = 0;
212 	} else { /* isoc */
213 		if (!dev->dvb_ep_isoc)
214 			return -ENODEV;
215 		dvb_max_packet_size = dev->dvb_max_pkt_size_isoc;
216 		if (dvb_max_packet_size < 0)
217 			return dvb_max_packet_size;
218 		packet_multiplier = EM28XX_DVB_NUM_ISOC_PACKETS;
219 		dvb_alt = dev->dvb_alt_isoc;
220 	}
221 
222 	if (!dev->board.has_dual_ts)
223 		usb_set_interface(udev, dev->ifnum, dvb_alt);
224 
225 	rc = em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
226 	if (rc < 0)
227 		return rc;
228 
229 	dprintk(1, "Using %d buffers each with %d x %d bytes, alternate %d\n",
230 		EM28XX_DVB_NUM_BUFS,
231 		packet_multiplier,
232 		dvb_max_packet_size, dvb_alt);
233 
234 	return em28xx_init_usb_xfer(dev, EM28XX_DIGITAL_MODE,
235 				    dev->dvb_xfer_bulk,
236 				    EM28XX_DVB_NUM_BUFS,
237 				    dvb_max_packet_size,
238 				    packet_multiplier,
239 				    em28xx_dvb_urb_data_copy);
240 }
241 
242 static int em28xx_stop_streaming(struct em28xx_dvb *dvb)
243 {
244 	struct em28xx_i2c_bus *i2c_bus = dvb->adapter.priv;
245 	struct em28xx *dev = i2c_bus->dev;
246 
247 	em28xx_stop_urbs(dev);
248 
249 	return 0;
250 }
251 
252 static int em28xx_start_feed(struct dvb_demux_feed *feed)
253 {
254 	struct dvb_demux *demux  = feed->demux;
255 	struct em28xx_dvb *dvb = demux->priv;
256 	int rc, ret;
257 
258 	if (!demux->dmx.frontend)
259 		return -EINVAL;
260 
261 	mutex_lock(&dvb->lock);
262 	dvb->nfeeds++;
263 	rc = dvb->nfeeds;
264 
265 	if (dvb->nfeeds == 1) {
266 		ret = em28xx_start_streaming(dvb);
267 		if (ret < 0)
268 			rc = ret;
269 	}
270 
271 	mutex_unlock(&dvb->lock);
272 	return rc;
273 }
274 
275 static int em28xx_stop_feed(struct dvb_demux_feed *feed)
276 {
277 	struct dvb_demux *demux  = feed->demux;
278 	struct em28xx_dvb *dvb = demux->priv;
279 	int err = 0;
280 
281 	mutex_lock(&dvb->lock);
282 	dvb->nfeeds--;
283 
284 	if (!dvb->nfeeds)
285 		err = em28xx_stop_streaming(dvb);
286 
287 	mutex_unlock(&dvb->lock);
288 	return err;
289 }
290 
291 /* ------------------------------------------------------------------ */
292 static int em28xx_dvb_bus_ctrl(struct dvb_frontend *fe, int acquire)
293 {
294 	struct em28xx_i2c_bus *i2c_bus = fe->dvb->priv;
295 	struct em28xx *dev = i2c_bus->dev;
296 
297 	if (acquire)
298 		return em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
299 	else
300 		return em28xx_set_mode(dev, EM28XX_SUSPEND);
301 }
302 
303 /* ------------------------------------------------------------------ */
304 
305 static struct lgdt330x_config em2880_lgdt3303_dev = {
306 	.demod_chip = LGDT3303,
307 };
308 
309 static struct lgdt3305_config em2870_lgdt3304_dev = {
310 	.i2c_addr           = 0x0e,
311 	.demod_chip         = LGDT3304,
312 	.spectral_inversion = 1,
313 	.deny_i2c_rptr      = 1,
314 	.mpeg_mode          = LGDT3305_MPEG_PARALLEL,
315 	.tpclk_edge         = LGDT3305_TPCLK_FALLING_EDGE,
316 	.tpvalid_polarity   = LGDT3305_TP_VALID_HIGH,
317 	.vsb_if_khz         = 3250,
318 	.qam_if_khz         = 4000,
319 };
320 
321 static struct lgdt3305_config em2874_lgdt3305_dev = {
322 	.i2c_addr           = 0x0e,
323 	.demod_chip         = LGDT3305,
324 	.spectral_inversion = 1,
325 	.deny_i2c_rptr      = 0,
326 	.mpeg_mode          = LGDT3305_MPEG_SERIAL,
327 	.tpclk_edge         = LGDT3305_TPCLK_FALLING_EDGE,
328 	.tpvalid_polarity   = LGDT3305_TP_VALID_HIGH,
329 	.vsb_if_khz         = 3250,
330 	.qam_if_khz         = 4000,
331 };
332 
333 static struct lgdt3305_config em2874_lgdt3305_nogate_dev = {
334 	.i2c_addr           = 0x0e,
335 	.demod_chip         = LGDT3305,
336 	.spectral_inversion = 1,
337 	.deny_i2c_rptr      = 1,
338 	.mpeg_mode          = LGDT3305_MPEG_SERIAL,
339 	.tpclk_edge         = LGDT3305_TPCLK_FALLING_EDGE,
340 	.tpvalid_polarity   = LGDT3305_TP_VALID_HIGH,
341 	.vsb_if_khz         = 3600,
342 	.qam_if_khz         = 3600,
343 };
344 
345 static struct s921_config sharp_isdbt = {
346 	.demod_address = 0x30 >> 1
347 };
348 
349 static struct zl10353_config em28xx_zl10353_with_xc3028 = {
350 	.demod_address = (0x1e >> 1),
351 	.no_tuner = 1,
352 	.parallel_ts = 1,
353 	.if2 = 45600,
354 };
355 
356 static struct s5h1409_config em28xx_s5h1409_with_xc3028 = {
357 	.demod_address = 0x32 >> 1,
358 	.output_mode   = S5H1409_PARALLEL_OUTPUT,
359 	.gpio          = S5H1409_GPIO_OFF,
360 	.inversion     = S5H1409_INVERSION_OFF,
361 	.status_mode   = S5H1409_DEMODLOCKING,
362 	.mpeg_timing   = S5H1409_MPEGTIMING_CONTINUOUS_NONINVERTING_CLOCK
363 };
364 
365 static struct tda18271_std_map kworld_a340_std_map = {
366 	.atsc_6   = { .if_freq = 3250, .agc_mode = 3, .std = 0,
367 		      .if_lvl = 1, .rfagc_top = 0x37, },
368 	.qam_6    = { .if_freq = 4000, .agc_mode = 3, .std = 1,
369 		      .if_lvl = 1, .rfagc_top = 0x37, },
370 };
371 
372 static struct tda18271_config kworld_a340_config = {
373 	.std_map           = &kworld_a340_std_map,
374 };
375 
376 static struct tda18271_config kworld_ub435q_v2_config = {
377 	.std_map	= &kworld_a340_std_map,
378 	.gate		= TDA18271_GATE_DIGITAL,
379 };
380 
381 static struct tda18212_config kworld_ub435q_v3_config = {
382 	.if_atsc_vsb	= 3600,
383 	.if_atsc_qam	= 3600,
384 };
385 
386 static struct zl10353_config em28xx_zl10353_xc3028_no_i2c_gate = {
387 	.demod_address = (0x1e >> 1),
388 	.no_tuner = 1,
389 	.disable_i2c_gate_ctrl = 1,
390 	.parallel_ts = 1,
391 	.if2 = 45600,
392 };
393 
394 static struct drxd_config em28xx_drxd = {
395 	.demod_address = 0x70,
396 	.demod_revision = 0xa2,
397 	.pll_type = DRXD_PLL_NONE,
398 	.clock = 12000,
399 	.insert_rs_byte = 1,
400 	.IF = 42800000,
401 	.disable_i2c_gate_ctrl = 1,
402 };
403 
404 static struct drxk_config terratec_h5_drxk = {
405 	.adr = 0x29,
406 	.single_master = 1,
407 	.no_i2c_bridge = 1,
408 	.microcode_name = "dvb-usb-terratec-h5-drxk.fw",
409 	.qam_demod_parameter_count = 2,
410 };
411 
412 static struct drxk_config hauppauge_930c_drxk = {
413 	.adr = 0x29,
414 	.single_master = 1,
415 	.no_i2c_bridge = 1,
416 	.microcode_name = "dvb-usb-hauppauge-hvr930c-drxk.fw",
417 	.chunk_size = 56,
418 	.qam_demod_parameter_count = 2,
419 };
420 
421 static struct drxk_config terratec_htc_stick_drxk = {
422 	.adr = 0x29,
423 	.single_master = 1,
424 	.no_i2c_bridge = 1,
425 	.microcode_name = "dvb-usb-terratec-htc-stick-drxk.fw",
426 	.chunk_size = 54,
427 	.qam_demod_parameter_count = 2,
428 	/* Required for the antenna_gpio to disable LNA. */
429 	.antenna_dvbt = true,
430 	/* The windows driver uses the same. This will disable LNA. */
431 	.antenna_gpio = 0x6,
432 };
433 
434 static struct drxk_config maxmedia_ub425_tc_drxk = {
435 	.adr = 0x29,
436 	.single_master = 1,
437 	.no_i2c_bridge = 1,
438 	.microcode_name = "dvb-demod-drxk-01.fw",
439 	.chunk_size = 62,
440 	.qam_demod_parameter_count = 2,
441 };
442 
443 static struct drxk_config pctv_520e_drxk = {
444 	.adr = 0x29,
445 	.single_master = 1,
446 	.microcode_name = "dvb-demod-drxk-pctv.fw",
447 	.qam_demod_parameter_count = 2,
448 	.chunk_size = 58,
449 	.antenna_dvbt = true, /* disable LNA */
450 	.antenna_gpio = (1 << 2), /* disable LNA */
451 };
452 
453 static int drxk_gate_ctrl(struct dvb_frontend *fe, int enable)
454 {
455 	struct em28xx_dvb *dvb = fe->sec_priv;
456 	int status;
457 
458 	if (!dvb)
459 		return -EINVAL;
460 
461 	if (enable) {
462 		down(&dvb->pll_mutex);
463 		status = dvb->gate_ctrl(fe, 1);
464 	} else {
465 		status = dvb->gate_ctrl(fe, 0);
466 		up(&dvb->pll_mutex);
467 	}
468 	return status;
469 }
470 
471 static void hauppauge_hvr930c_init(struct em28xx *dev)
472 {
473 	int i;
474 
475 	static const struct em28xx_reg_seq hauppauge_hvr930c_init[] = {
476 		{EM2874_R80_GPIO_P0_CTRL,	0xff,	0xff,	0x65},
477 		{EM2874_R80_GPIO_P0_CTRL,	0xfb,	0xff,	0x32},
478 		{EM2874_R80_GPIO_P0_CTRL,	0xff,	0xff,	0xb8},
479 		{	-1,			-1,	-1,	-1},
480 	};
481 	static const struct em28xx_reg_seq hauppauge_hvr930c_end[] = {
482 		{EM2874_R80_GPIO_P0_CTRL,	0xef,	0xff,	0x01},
483 		{EM2874_R80_GPIO_P0_CTRL,	0xaf,	0xff,	0x65},
484 		{EM2874_R80_GPIO_P0_CTRL,	0xef,	0xff,	0x76},
485 		{EM2874_R80_GPIO_P0_CTRL,	0xef,	0xff,	0x01},
486 		{EM2874_R80_GPIO_P0_CTRL,	0xcf,	0xff,	0x0b},
487 		{EM2874_R80_GPIO_P0_CTRL,	0xef,	0xff,	0x40},
488 
489 		{EM2874_R80_GPIO_P0_CTRL,	0xcf,	0xff,	0x65},
490 		{EM2874_R80_GPIO_P0_CTRL,	0xef,	0xff,	0x65},
491 		{EM2874_R80_GPIO_P0_CTRL,	0xcf,	0xff,	0x0b},
492 		{EM2874_R80_GPIO_P0_CTRL,	0xef,	0xff,	0x65},
493 
494 		{	-1,			-1,	-1,	-1},
495 	};
496 
497 	static const struct {
498 		unsigned char r[4];
499 		int len;
500 	} regs[] = {
501 		{{ 0x06, 0x02, 0x00, 0x31 }, 4},
502 		{{ 0x01, 0x02 }, 2},
503 		{{ 0x01, 0x02, 0x00, 0xc6 }, 4},
504 		{{ 0x01, 0x00 }, 2},
505 		{{ 0x01, 0x00, 0xff, 0xaf }, 4},
506 		{{ 0x01, 0x00, 0x03, 0xa0 }, 4},
507 		{{ 0x01, 0x00 }, 2},
508 		{{ 0x01, 0x00, 0x73, 0xaf }, 4},
509 		{{ 0x04, 0x00 }, 2},
510 		{{ 0x00, 0x04 }, 2},
511 		{{ 0x00, 0x04, 0x00, 0x0a }, 4},
512 		{{ 0x04, 0x14 }, 2},
513 		{{ 0x04, 0x14, 0x00, 0x00 }, 4},
514 	};
515 
516 	em28xx_gpio_set(dev, hauppauge_hvr930c_init);
517 	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x40);
518 	usleep_range(10000, 11000);
519 	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x44);
520 	usleep_range(10000, 11000);
521 
522 	dev->i2c_client[dev->def_i2c_bus].addr = 0x82 >> 1;
523 
524 	for (i = 0; i < ARRAY_SIZE(regs); i++)
525 		i2c_master_send(&dev->i2c_client[dev->def_i2c_bus],
526 				regs[i].r, regs[i].len);
527 	em28xx_gpio_set(dev, hauppauge_hvr930c_end);
528 
529 	msleep(100);
530 
531 	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x44);
532 	msleep(30);
533 
534 	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x45);
535 	usleep_range(10000, 11000);
536 }
537 
538 static void terratec_h5_init(struct em28xx *dev)
539 {
540 	int i;
541 	static const struct em28xx_reg_seq terratec_h5_init[] = {
542 		{EM2820_R08_GPIO_CTRL,		0xff,	0xff,	10},
543 		{EM2874_R80_GPIO_P0_CTRL,	0xf6,	0xff,	100},
544 		{EM2874_R80_GPIO_P0_CTRL,	0xf2,	0xff,	50},
545 		{EM2874_R80_GPIO_P0_CTRL,	0xf6,	0xff,	100},
546 		{	-1,			-1,	-1,	-1},
547 	};
548 	static const struct em28xx_reg_seq terratec_h5_end[] = {
549 		{EM2874_R80_GPIO_P0_CTRL,	0xe6,	0xff,	100},
550 		{EM2874_R80_GPIO_P0_CTRL,	0xa6,	0xff,	50},
551 		{EM2874_R80_GPIO_P0_CTRL,	0xe6,	0xff,	100},
552 		{	-1,			-1,	-1,	-1},
553 	};
554 	static const struct {
555 		unsigned char r[4];
556 		int len;
557 	} regs[] = {
558 		{{ 0x06, 0x02, 0x00, 0x31 }, 4},
559 		{{ 0x01, 0x02 }, 2},
560 		{{ 0x01, 0x02, 0x00, 0xc6 }, 4},
561 		{{ 0x01, 0x00 }, 2},
562 		{{ 0x01, 0x00, 0xff, 0xaf }, 4},
563 		{{ 0x01, 0x00, 0x03, 0xa0 }, 4},
564 		{{ 0x01, 0x00 }, 2},
565 		{{ 0x01, 0x00, 0x73, 0xaf }, 4},
566 		{{ 0x04, 0x00 }, 2},
567 		{{ 0x00, 0x04 }, 2},
568 		{{ 0x00, 0x04, 0x00, 0x0a }, 4},
569 		{{ 0x04, 0x14 }, 2},
570 		{{ 0x04, 0x14, 0x00, 0x00 }, 4},
571 	};
572 
573 	em28xx_gpio_set(dev, terratec_h5_init);
574 	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x40);
575 	usleep_range(10000, 11000);
576 	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x45);
577 	usleep_range(10000, 11000);
578 
579 	dev->i2c_client[dev->def_i2c_bus].addr = 0x82 >> 1;
580 
581 	for (i = 0; i < ARRAY_SIZE(regs); i++)
582 		i2c_master_send(&dev->i2c_client[dev->def_i2c_bus],
583 				regs[i].r, regs[i].len);
584 	em28xx_gpio_set(dev, terratec_h5_end);
585 };
586 
587 static void terratec_htc_stick_init(struct em28xx *dev)
588 {
589 	int i;
590 
591 	/*
592 	 * GPIO configuration:
593 	 * 0xff: unknown (does not affect DVB-T).
594 	 * 0xf6: DRX-K (demodulator).
595 	 * 0xe6: unknown (does not affect DVB-T).
596 	 * 0xb6: unknown (does not affect DVB-T).
597 	 */
598 	static const struct em28xx_reg_seq terratec_htc_stick_init[] = {
599 		{EM2820_R08_GPIO_CTRL,		0xff,	0xff,	10},
600 		{EM2874_R80_GPIO_P0_CTRL,	0xf6,	0xff,	100},
601 		{EM2874_R80_GPIO_P0_CTRL,	0xe6,	0xff,	50},
602 		{EM2874_R80_GPIO_P0_CTRL,	0xf6,	0xff,	100},
603 		{	-1,			-1,	-1,	-1},
604 	};
605 	static const struct em28xx_reg_seq terratec_htc_stick_end[] = {
606 		{EM2874_R80_GPIO_P0_CTRL,	0xb6,	0xff,	100},
607 		{EM2874_R80_GPIO_P0_CTRL,	0xf6,	0xff,	50},
608 		{	-1,			-1,	-1,	-1},
609 	};
610 
611 	/*
612 	 * Init the analog decoder (not yet supported), but
613 	 * it's probably still a good idea.
614 	 */
615 	static const struct {
616 		unsigned char r[4];
617 		int len;
618 	} regs[] = {
619 		{{ 0x06, 0x02, 0x00, 0x31 }, 4},
620 		{{ 0x01, 0x02 }, 2},
621 		{{ 0x01, 0x02, 0x00, 0xc6 }, 4},
622 		{{ 0x01, 0x00 }, 2},
623 		{{ 0x01, 0x00, 0xff, 0xaf }, 4},
624 	};
625 
626 	em28xx_gpio_set(dev, terratec_htc_stick_init);
627 
628 	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x40);
629 	usleep_range(10000, 11000);
630 	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x44);
631 	usleep_range(10000, 11000);
632 
633 	dev->i2c_client[dev->def_i2c_bus].addr = 0x82 >> 1;
634 
635 	for (i = 0; i < ARRAY_SIZE(regs); i++)
636 		i2c_master_send(&dev->i2c_client[dev->def_i2c_bus],
637 				regs[i].r, regs[i].len);
638 
639 	em28xx_gpio_set(dev, terratec_htc_stick_end);
640 };
641 
642 static void terratec_htc_usb_xs_init(struct em28xx *dev)
643 {
644 	int i;
645 
646 	static const struct em28xx_reg_seq terratec_htc_usb_xs_init[] = {
647 		{EM2820_R08_GPIO_CTRL,		0xff,	0xff,	10},
648 		{EM2874_R80_GPIO_P0_CTRL,	0xb2,	0xff,	100},
649 		{EM2874_R80_GPIO_P0_CTRL,	0xb2,	0xff,	50},
650 		{EM2874_R80_GPIO_P0_CTRL,	0xb6,	0xff,	100},
651 		{	-1,			-1,	-1,	-1},
652 	};
653 	static const struct em28xx_reg_seq terratec_htc_usb_xs_end[] = {
654 		{EM2874_R80_GPIO_P0_CTRL,	0xa6,	0xff,	100},
655 		{EM2874_R80_GPIO_P0_CTRL,	0xa6,	0xff,	50},
656 		{EM2874_R80_GPIO_P0_CTRL,	0xe6,	0xff,	100},
657 		{	-1,			-1,	-1,	-1},
658 	};
659 
660 	/*
661 	 * Init the analog decoder (not yet supported), but
662 	 * it's probably still a good idea.
663 	 */
664 	static const struct {
665 		unsigned char r[4];
666 		int len;
667 	} regs[] = {
668 		{{ 0x06, 0x02, 0x00, 0x31 }, 4},
669 		{{ 0x01, 0x02 }, 2},
670 		{{ 0x01, 0x02, 0x00, 0xc6 }, 4},
671 		{{ 0x01, 0x00 }, 2},
672 		{{ 0x01, 0x00, 0xff, 0xaf }, 4},
673 		{{ 0x01, 0x00, 0x03, 0xa0 }, 4},
674 		{{ 0x01, 0x00 }, 2},
675 		{{ 0x01, 0x00, 0x73, 0xaf }, 4},
676 		{{ 0x04, 0x00 }, 2},
677 		{{ 0x00, 0x04 }, 2},
678 		{{ 0x00, 0x04, 0x00, 0x0a }, 4},
679 		{{ 0x04, 0x14 }, 2},
680 		{{ 0x04, 0x14, 0x00, 0x00 }, 4},
681 	};
682 
683 	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x40);
684 
685 	em28xx_gpio_set(dev, terratec_htc_usb_xs_init);
686 
687 	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x40);
688 	usleep_range(10000, 11000);
689 	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x44);
690 	usleep_range(10000, 11000);
691 
692 	dev->i2c_client[dev->def_i2c_bus].addr = 0x82 >> 1;
693 
694 	for (i = 0; i < ARRAY_SIZE(regs); i++)
695 		i2c_master_send(&dev->i2c_client[dev->def_i2c_bus],
696 				regs[i].r, regs[i].len);
697 
698 	em28xx_gpio_set(dev, terratec_htc_usb_xs_end);
699 };
700 
701 static void pctv_520e_init(struct em28xx *dev)
702 {
703 	/*
704 	 * Init AVF4910B analog decoder. Looks like I2C traffic to
705 	 * digital demodulator and tuner are routed via AVF4910B.
706 	 */
707 	int i;
708 	static const struct {
709 		unsigned char r[4];
710 		int len;
711 	} regs[] = {
712 		{{ 0x06, 0x02, 0x00, 0x31 }, 4},
713 		{{ 0x01, 0x02 }, 2},
714 		{{ 0x01, 0x02, 0x00, 0xc6 }, 4},
715 		{{ 0x01, 0x00 }, 2},
716 		{{ 0x01, 0x00, 0xff, 0xaf }, 4},
717 		{{ 0x01, 0x00, 0x03, 0xa0 }, 4},
718 		{{ 0x01, 0x00 }, 2},
719 		{{ 0x01, 0x00, 0x73, 0xaf }, 4},
720 	};
721 
722 	dev->i2c_client[dev->def_i2c_bus].addr = 0x82 >> 1; /* 0x41 */
723 
724 	for (i = 0; i < ARRAY_SIZE(regs); i++)
725 		i2c_master_send(&dev->i2c_client[dev->def_i2c_bus],
726 				regs[i].r, regs[i].len);
727 };
728 
729 static int em28xx_pctv_290e_set_lna(struct dvb_frontend *fe)
730 {
731 	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
732 	struct em28xx_i2c_bus *i2c_bus = fe->dvb->priv;
733 	struct em28xx *dev = i2c_bus->dev;
734 #ifdef CONFIG_GPIOLIB
735 	struct em28xx_dvb *dvb = dev->dvb;
736 	int ret;
737 	unsigned long flags;
738 
739 	if (c->lna == 1)
740 		flags = GPIOF_OUT_INIT_HIGH; /* enable LNA */
741 	else
742 		flags = GPIOF_OUT_INIT_LOW; /* disable LNA */
743 
744 	ret = gpio_request_one(dvb->lna_gpio, flags, NULL);
745 	if (ret)
746 		dev_err(&dev->intf->dev, "gpio request failed %d\n", ret);
747 	else
748 		gpio_free(dvb->lna_gpio);
749 
750 	return ret;
751 #else
752 	dev_warn(&dev->intf->dev, "%s: LNA control is disabled (lna=%u)\n",
753 		 KBUILD_MODNAME, c->lna);
754 	return 0;
755 #endif
756 }
757 
758 static int em28xx_pctv_292e_set_lna(struct dvb_frontend *fe)
759 {
760 	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
761 	struct em28xx_i2c_bus *i2c_bus = fe->dvb->priv;
762 	struct em28xx *dev = i2c_bus->dev;
763 	u8 lna;
764 
765 	if (c->lna == 1)
766 		lna = 0x01;
767 	else
768 		lna = 0x00;
769 
770 	return em28xx_write_reg_bits(dev, EM2874_R80_GPIO_P0_CTRL, lna, 0x01);
771 }
772 
773 static int em28xx_mt352_terratec_xs_init(struct dvb_frontend *fe)
774 {
775 	/* Values extracted from a USB trace of the Terratec Windows driver */
776 	static u8 clock_config[]   = { CLOCK_CTL,  0x38, 0x2c };
777 	static u8 reset[]          = { RESET,      0x80 };
778 	static u8 adc_ctl_1_cfg[]  = { ADC_CTL_1,  0x40 };
779 	static u8 agc_cfg[]        = { AGC_TARGET, 0x28, 0xa0 };
780 	static u8 input_freq_cfg[] = { INPUT_FREQ_1, 0x31, 0xb8 };
781 	static u8 rs_err_cfg[]     = { RS_ERR_PER_1, 0x00, 0x4d };
782 	static u8 capt_range_cfg[] = { CAPT_RANGE, 0x32 };
783 	static u8 trl_nom_cfg[]    = { TRL_NOMINAL_RATE_1, 0x64, 0x00 };
784 	static u8 tps_given_cfg[]  = { TPS_GIVEN_1, 0x40, 0x80, 0x50 };
785 	static u8 tuner_go[]       = { TUNER_GO, 0x01};
786 
787 	mt352_write(fe, clock_config,   sizeof(clock_config));
788 	usleep_range(200, 250);
789 	mt352_write(fe, reset,          sizeof(reset));
790 	mt352_write(fe, adc_ctl_1_cfg,  sizeof(adc_ctl_1_cfg));
791 	mt352_write(fe, agc_cfg,        sizeof(agc_cfg));
792 	mt352_write(fe, input_freq_cfg, sizeof(input_freq_cfg));
793 	mt352_write(fe, rs_err_cfg,     sizeof(rs_err_cfg));
794 	mt352_write(fe, capt_range_cfg, sizeof(capt_range_cfg));
795 	mt352_write(fe, trl_nom_cfg,    sizeof(trl_nom_cfg));
796 	mt352_write(fe, tps_given_cfg,  sizeof(tps_given_cfg));
797 	mt352_write(fe, tuner_go,       sizeof(tuner_go));
798 	return 0;
799 }
800 
801 static void px_bcud_init(struct em28xx *dev)
802 {
803 	int i;
804 	static const struct {
805 		unsigned char r[4];
806 		int len;
807 	} regs1[] = {
808 		{{ 0x0e, 0x77 }, 2},
809 		{{ 0x0f, 0x77 }, 2},
810 		{{ 0x03, 0x90 }, 2},
811 	}, regs2[] = {
812 		{{ 0x07, 0x01 }, 2},
813 		{{ 0x08, 0x10 }, 2},
814 		{{ 0x13, 0x00 }, 2},
815 		{{ 0x17, 0x00 }, 2},
816 		{{ 0x03, 0x01 }, 2},
817 		{{ 0x10, 0xb1 }, 2},
818 		{{ 0x11, 0x40 }, 2},
819 		{{ 0x85, 0x7a }, 2},
820 		{{ 0x87, 0x04 }, 2},
821 	};
822 	static const struct em28xx_reg_seq gpio[] = {
823 		{EM28XX_R06_I2C_CLK,		0x40,	0xff,	300},
824 		{EM2874_R80_GPIO_P0_CTRL,	0xfd,	0xff,	60},
825 		{EM28XX_R15_RGAIN,		0x20,	0xff,	0},
826 		{EM28XX_R16_GGAIN,		0x20,	0xff,	0},
827 		{EM28XX_R17_BGAIN,		0x20,	0xff,	0},
828 		{EM28XX_R18_ROFFSET,		0x00,	0xff,	0},
829 		{EM28XX_R19_GOFFSET,		0x00,	0xff,	0},
830 		{EM28XX_R1A_BOFFSET,		0x00,	0xff,	0},
831 		{EM28XX_R23_UOFFSET,		0x00,	0xff,	0},
832 		{EM28XX_R24_VOFFSET,		0x00,	0xff,	0},
833 		{EM28XX_R26_COMPR,		0x00,	0xff,	0},
834 		{0x13,				0x08,	0xff,	0},
835 		{EM28XX_R12_VINENABLE,		0x27,	0xff,	0},
836 		{EM28XX_R0C_USBSUSP,		0x10,	0xff,	0},
837 		{EM28XX_R27_OUTFMT,		0x00,	0xff,	0},
838 		{EM28XX_R10_VINMODE,		0x00,	0xff,	0},
839 		{EM28XX_R11_VINCTRL,		0x11,	0xff,	0},
840 		{EM2874_R50_IR_CONFIG,		0x01,	0xff,	0},
841 		{EM2874_R5F_TS_ENABLE,		0x80,	0xff,	0},
842 		{EM28XX_R06_I2C_CLK,		0x46,	0xff,	0},
843 	};
844 	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x46);
845 	/* sleeping ISDB-T */
846 	dev->dvb->i2c_client_demod->addr = 0x14;
847 	for (i = 0; i < ARRAY_SIZE(regs1); i++)
848 		i2c_master_send(dev->dvb->i2c_client_demod,
849 				regs1[i].r, regs1[i].len);
850 	/* sleeping ISDB-S */
851 	dev->dvb->i2c_client_demod->addr = 0x15;
852 	for (i = 0; i < ARRAY_SIZE(regs2); i++)
853 		i2c_master_send(dev->dvb->i2c_client_demod, regs2[i].r,
854 				regs2[i].len);
855 	for (i = 0; i < ARRAY_SIZE(gpio); i++) {
856 		em28xx_write_reg_bits(dev, gpio[i].reg, gpio[i].val,
857 				      gpio[i].mask);
858 		if (gpio[i].sleep > 0)
859 			msleep(gpio[i].sleep);
860 	}
861 };
862 
863 static struct mt352_config terratec_xs_mt352_cfg = {
864 	.demod_address = (0x1e >> 1),
865 	.no_tuner = 1,
866 	.if2 = 45600,
867 	.demod_init = em28xx_mt352_terratec_xs_init,
868 };
869 
870 static struct tda10023_config em28xx_tda10023_config = {
871 	.demod_address = 0x0c,
872 	.invert = 1,
873 };
874 
875 static struct cxd2820r_config em28xx_cxd2820r_config = {
876 	.i2c_address = (0xd8 >> 1),
877 	.ts_mode = CXD2820R_TS_SERIAL,
878 };
879 
880 static struct tda18271_config em28xx_cxd2820r_tda18271_config = {
881 	.output_opt = TDA18271_OUTPUT_LT_OFF,
882 	.gate = TDA18271_GATE_DIGITAL,
883 };
884 
885 static struct zl10353_config em28xx_zl10353_no_i2c_gate_dev = {
886 	.demod_address = (0x1e >> 1),
887 	.disable_i2c_gate_ctrl = 1,
888 	.no_tuner = 1,
889 	.parallel_ts = 1,
890 };
891 
892 static struct mt2060_config em28xx_mt2060_config = {
893 	.i2c_address = 0x60,
894 };
895 
896 static struct qt1010_config em28xx_qt1010_config = {
897 	.i2c_address = 0x62
898 };
899 
900 static const struct mb86a20s_config c3tech_duo_mb86a20s_config = {
901 	.demod_address = 0x10,
902 	.is_serial = true,
903 };
904 
905 static struct tda18271_std_map mb86a20s_tda18271_config = {
906 	.dvbt_6   = { .if_freq = 4000, .agc_mode = 3, .std = 4,
907 		      .if_lvl = 1, .rfagc_top = 0x37, },
908 };
909 
910 static struct tda18271_config c3tech_duo_tda18271_config = {
911 	.std_map = &mb86a20s_tda18271_config,
912 	.gate    = TDA18271_GATE_DIGITAL,
913 	.small_i2c = TDA18271_03_BYTE_CHUNK_INIT,
914 };
915 
916 static struct tda18271_std_map drx_j_std_map = {
917 	.atsc_6   = { .if_freq = 5000, .agc_mode = 3, .std = 0, .if_lvl = 1,
918 		      .rfagc_top = 0x37, },
919 	.qam_6    = { .if_freq = 5380, .agc_mode = 3, .std = 3, .if_lvl = 1,
920 		      .rfagc_top = 0x37, },
921 };
922 
923 static struct tda18271_config pinnacle_80e_dvb_config = {
924 	.std_map = &drx_j_std_map,
925 	.gate    = TDA18271_GATE_DIGITAL,
926 	.role    = TDA18271_MASTER,
927 };
928 
929 static struct lgdt3306a_config hauppauge_01595_lgdt3306a_config = {
930 	.qam_if_khz         = 4000,
931 	.vsb_if_khz         = 3250,
932 	.spectral_inversion = 0,
933 	.deny_i2c_rptr      = 0,
934 	.mpeg_mode          = LGDT3306A_MPEG_SERIAL,
935 	.tpclk_edge         = LGDT3306A_TPCLK_RISING_EDGE,
936 	.tpvalid_polarity   = LGDT3306A_TP_VALID_HIGH,
937 	.xtalMHz            = 25,
938 };
939 
940 /* ------------------------------------------------------------------ */
941 
942 static noinline_for_stack int em28xx_attach_xc3028(u8 addr, struct em28xx *dev)
943 {
944 	struct dvb_frontend *fe;
945 	struct xc2028_config cfg;
946 	struct xc2028_ctrl ctl;
947 
948 	memset(&cfg, 0, sizeof(cfg));
949 	cfg.i2c_adap  = &dev->i2c_adap[dev->def_i2c_bus];
950 	cfg.i2c_addr  = addr;
951 
952 	memset(&ctl, 0, sizeof(ctl));
953 	em28xx_setup_xc3028(dev, &ctl);
954 	cfg.ctrl  = &ctl;
955 
956 	if (!dev->dvb->fe[0]) {
957 		dev_err(&dev->intf->dev,
958 			"dvb frontend not attached. Can't attach xc3028\n");
959 		return -EINVAL;
960 	}
961 
962 	fe = dvb_attach(xc2028_attach, dev->dvb->fe[0], &cfg);
963 	if (!fe) {
964 		dev_err(&dev->intf->dev, "xc3028 attach failed\n");
965 		dvb_frontend_detach(dev->dvb->fe[0]);
966 		dev->dvb->fe[0] = NULL;
967 		return -EINVAL;
968 	}
969 
970 	dev_info(&dev->intf->dev, "xc3028 attached\n");
971 
972 	return 0;
973 }
974 
975 /* ------------------------------------------------------------------ */
976 
977 static int em28xx_register_dvb(struct em28xx_dvb *dvb, struct module *module,
978 			       struct em28xx *dev, struct device *device)
979 {
980 	int result;
981 	bool create_rf_connector = false;
982 
983 	mutex_init(&dvb->lock);
984 
985 	/* register adapter */
986 	result = dvb_register_adapter(&dvb->adapter,
987 				      dev_name(&dev->intf->dev), module,
988 				      device, adapter_nr);
989 	if (result < 0) {
990 		dev_warn(&dev->intf->dev,
991 			 "dvb_register_adapter failed (errno = %d)\n",
992 			 result);
993 		goto fail_adapter;
994 	}
995 #ifdef CONFIG_MEDIA_CONTROLLER_DVB
996 	dvb->adapter.mdev = dev->media_dev;
997 #endif
998 
999 	/* Ensure all frontends negotiate bus access */
1000 	dvb->fe[0]->ops.ts_bus_ctrl = em28xx_dvb_bus_ctrl;
1001 	if (dvb->fe[1])
1002 		dvb->fe[1]->ops.ts_bus_ctrl = em28xx_dvb_bus_ctrl;
1003 
1004 	dvb->adapter.priv = &dev->i2c_bus[dev->def_i2c_bus];
1005 
1006 	/* register frontend */
1007 	result = dvb_register_frontend(&dvb->adapter, dvb->fe[0]);
1008 	if (result < 0) {
1009 		dev_warn(&dev->intf->dev,
1010 			 "dvb_register_frontend failed (errno = %d)\n",
1011 			 result);
1012 		goto fail_frontend0;
1013 	}
1014 
1015 	/* register 2nd frontend */
1016 	if (dvb->fe[1]) {
1017 		result = dvb_register_frontend(&dvb->adapter, dvb->fe[1]);
1018 		if (result < 0) {
1019 			dev_warn(&dev->intf->dev,
1020 				 "2nd dvb_register_frontend failed (errno = %d)\n",
1021 				 result);
1022 			goto fail_frontend1;
1023 		}
1024 	}
1025 
1026 	/* register demux stuff */
1027 	dvb->demux.dmx.capabilities =
1028 		DMX_TS_FILTERING | DMX_SECTION_FILTERING |
1029 		DMX_MEMORY_BASED_FILTERING;
1030 	dvb->demux.priv       = dvb;
1031 	dvb->demux.filternum  = 256;
1032 	dvb->demux.feednum    = 256;
1033 	dvb->demux.start_feed = em28xx_start_feed;
1034 	dvb->demux.stop_feed  = em28xx_stop_feed;
1035 
1036 	result = dvb_dmx_init(&dvb->demux);
1037 	if (result < 0) {
1038 		dev_warn(&dev->intf->dev,
1039 			 "dvb_dmx_init failed (errno = %d)\n",
1040 			 result);
1041 		goto fail_dmx;
1042 	}
1043 
1044 	dvb->dmxdev.filternum    = 256;
1045 	dvb->dmxdev.demux        = &dvb->demux.dmx;
1046 	dvb->dmxdev.capabilities = 0;
1047 	result = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter);
1048 	if (result < 0) {
1049 		dev_warn(&dev->intf->dev,
1050 			 "dvb_dmxdev_init failed (errno = %d)\n",
1051 			 result);
1052 		goto fail_dmxdev;
1053 	}
1054 
1055 	dvb->fe_hw.source = DMX_FRONTEND_0;
1056 	result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_hw);
1057 	if (result < 0) {
1058 		dev_warn(&dev->intf->dev,
1059 			 "add_frontend failed (DMX_FRONTEND_0, errno = %d)\n",
1060 			 result);
1061 		goto fail_fe_hw;
1062 	}
1063 
1064 	dvb->fe_mem.source = DMX_MEMORY_FE;
1065 	result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_mem);
1066 	if (result < 0) {
1067 		dev_warn(&dev->intf->dev,
1068 			 "add_frontend failed (DMX_MEMORY_FE, errno = %d)\n",
1069 			 result);
1070 		goto fail_fe_mem;
1071 	}
1072 
1073 	result = dvb->demux.dmx.connect_frontend(&dvb->demux.dmx, &dvb->fe_hw);
1074 	if (result < 0) {
1075 		dev_warn(&dev->intf->dev,
1076 			 "connect_frontend failed (errno = %d)\n",
1077 			 result);
1078 		goto fail_fe_conn;
1079 	}
1080 
1081 	/* register network adapter */
1082 	dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx);
1083 
1084 	/* If the analog part won't create RF connectors, DVB will do it */
1085 	if (!dev->has_video || dev->tuner_type == TUNER_ABSENT)
1086 		create_rf_connector = true;
1087 
1088 	result = dvb_create_media_graph(&dvb->adapter, create_rf_connector);
1089 	if (result < 0)
1090 		goto fail_create_graph;
1091 
1092 	return 0;
1093 
1094 fail_create_graph:
1095 	dvb_net_release(&dvb->net);
1096 fail_fe_conn:
1097 	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
1098 fail_fe_mem:
1099 	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
1100 fail_fe_hw:
1101 	dvb_dmxdev_release(&dvb->dmxdev);
1102 fail_dmxdev:
1103 	dvb_dmx_release(&dvb->demux);
1104 fail_dmx:
1105 	if (dvb->fe[1])
1106 		dvb_unregister_frontend(dvb->fe[1]);
1107 	dvb_unregister_frontend(dvb->fe[0]);
1108 fail_frontend1:
1109 	if (dvb->fe[1])
1110 		dvb_frontend_detach(dvb->fe[1]);
1111 fail_frontend0:
1112 	dvb_frontend_detach(dvb->fe[0]);
1113 	dvb_unregister_adapter(&dvb->adapter);
1114 fail_adapter:
1115 	return result;
1116 }
1117 
1118 static void em28xx_unregister_dvb(struct em28xx_dvb *dvb)
1119 {
1120 	dvb_net_release(&dvb->net);
1121 	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
1122 	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
1123 	dvb_dmxdev_release(&dvb->dmxdev);
1124 	dvb_dmx_release(&dvb->demux);
1125 	if (dvb->fe[1])
1126 		dvb_unregister_frontend(dvb->fe[1]);
1127 	dvb_unregister_frontend(dvb->fe[0]);
1128 	if (dvb->fe[1] && !dvb->dont_attach_fe1)
1129 		dvb_frontend_detach(dvb->fe[1]);
1130 	dvb_frontend_detach(dvb->fe[0]);
1131 	dvb_unregister_adapter(&dvb->adapter);
1132 }
1133 
1134 static int em28174_dvb_init_pctv_460e(struct em28xx *dev)
1135 {
1136 	struct em28xx_dvb *dvb = dev->dvb;
1137 	struct tda10071_platform_data tda10071_pdata = {};
1138 	struct a8293_platform_data a8293_pdata = {};
1139 
1140 	/* attach demod + tuner combo */
1141 	tda10071_pdata.clk = 40444000; /* 40.444 MHz */
1142 	tda10071_pdata.i2c_wr_max = 64;
1143 	tda10071_pdata.ts_mode = TDA10071_TS_SERIAL;
1144 	tda10071_pdata.pll_multiplier = 20;
1145 	tda10071_pdata.tuner_i2c_addr = 0x14;
1146 
1147 	dvb->i2c_client_demod = dvb_module_probe("tda10071", "tda10071_cx24118",
1148 						 &dev->i2c_adap[dev->def_i2c_bus],
1149 						 0x55, &tda10071_pdata);
1150 	if (!dvb->i2c_client_demod)
1151 		return -ENODEV;
1152 
1153 	dvb->fe[0] = tda10071_pdata.get_dvb_frontend(dvb->i2c_client_demod);
1154 
1155 	/* attach SEC */
1156 	a8293_pdata.dvb_frontend = dvb->fe[0];
1157 
1158 	dvb->i2c_client_sec = dvb_module_probe("a8293", NULL,
1159 					       &dev->i2c_adap[dev->def_i2c_bus],
1160 					       0x08, &a8293_pdata);
1161 	if (!dvb->i2c_client_sec) {
1162 		dvb_module_release(dvb->i2c_client_demod);
1163 		return -ENODEV;
1164 	}
1165 
1166 	return 0;
1167 }
1168 
1169 static int em28178_dvb_init_pctv_461e(struct em28xx *dev)
1170 {
1171 	struct em28xx_dvb *dvb = dev->dvb;
1172 	struct i2c_adapter *i2c_adapter;
1173 	struct m88ds3103_platform_data m88ds3103_pdata = {};
1174 	struct ts2020_config ts2020_config = {};
1175 	struct a8293_platform_data a8293_pdata = {};
1176 
1177 	/* attach demod */
1178 	m88ds3103_pdata.clk = 27000000;
1179 	m88ds3103_pdata.i2c_wr_max = 33;
1180 	m88ds3103_pdata.ts_mode = M88DS3103_TS_PARALLEL;
1181 	m88ds3103_pdata.ts_clk = 16000;
1182 	m88ds3103_pdata.ts_clk_pol = 1;
1183 	m88ds3103_pdata.agc = 0x99;
1184 
1185 	dvb->i2c_client_demod = dvb_module_probe("m88ds3103", NULL,
1186 						 &dev->i2c_adap[dev->def_i2c_bus],
1187 						 0x68, &m88ds3103_pdata);
1188 	if (!dvb->i2c_client_demod)
1189 		return -ENODEV;
1190 
1191 	dvb->fe[0] = m88ds3103_pdata.get_dvb_frontend(dvb->i2c_client_demod);
1192 	i2c_adapter = m88ds3103_pdata.get_i2c_adapter(dvb->i2c_client_demod);
1193 
1194 	/* attach tuner */
1195 	ts2020_config.fe = dvb->fe[0];
1196 
1197 	dvb->i2c_client_tuner = dvb_module_probe("ts2020", "ts2022",
1198 						 i2c_adapter,
1199 						 0x60, &ts2020_config);
1200 	if (!dvb->i2c_client_tuner) {
1201 		dvb_module_release(dvb->i2c_client_demod);
1202 		return -ENODEV;
1203 	}
1204 
1205 	/* delegate signal strength measurement to tuner */
1206 	dvb->fe[0]->ops.read_signal_strength =
1207 			dvb->fe[0]->ops.tuner_ops.get_rf_strength;
1208 
1209 	/* attach SEC */
1210 	a8293_pdata.dvb_frontend = dvb->fe[0];
1211 	dvb->i2c_client_sec = dvb_module_probe("a8293", NULL,
1212 					       &dev->i2c_adap[dev->def_i2c_bus],
1213 					       0x08, &a8293_pdata);
1214 	if (!dvb->i2c_client_sec) {
1215 		dvb_module_release(dvb->i2c_client_tuner);
1216 		dvb_module_release(dvb->i2c_client_demod);
1217 		return -ENODEV;
1218 	}
1219 
1220 	return 0;
1221 }
1222 
1223 static int em28178_dvb_init_pctv_461e_v2(struct em28xx *dev)
1224 {
1225 	struct em28xx_dvb *dvb = dev->dvb;
1226 	struct i2c_adapter *i2c_adapter;
1227 	struct m88ds3103_platform_data m88ds3103_pdata = {};
1228 	struct ts2020_config ts2020_config = {};
1229 	struct a8293_platform_data a8293_pdata = {};
1230 
1231 	/* attach demod */
1232 	m88ds3103_pdata.clk = 27000000;
1233 	m88ds3103_pdata.i2c_wr_max = 33;
1234 	m88ds3103_pdata.ts_mode = M88DS3103_TS_PARALLEL;
1235 	m88ds3103_pdata.ts_clk = 16000;
1236 	m88ds3103_pdata.ts_clk_pol = 0;
1237 	m88ds3103_pdata.agc = 0x99;
1238 	m88ds3103_pdata.agc_inv = 0;
1239 	m88ds3103_pdata.spec_inv = 0;
1240 	dvb->i2c_client_demod = dvb_module_probe("m88ds3103", "m88ds3103b",
1241 						 &dev->i2c_adap[dev->def_i2c_bus],
1242 						 0x6a, &m88ds3103_pdata);
1243 
1244 	if (!dvb->i2c_client_demod)
1245 		return -ENODEV;
1246 
1247 	dvb->fe[0] = m88ds3103_pdata.get_dvb_frontend(dvb->i2c_client_demod);
1248 	i2c_adapter = m88ds3103_pdata.get_i2c_adapter(dvb->i2c_client_demod);
1249 
1250 	/* attach tuner */
1251 	ts2020_config.fe = dvb->fe[0];
1252 	dvb->i2c_client_tuner = dvb_module_probe("ts2020", "ts2022",
1253 						 i2c_adapter,
1254 						 0x60, &ts2020_config);
1255 	if (!dvb->i2c_client_tuner) {
1256 		dvb_module_release(dvb->i2c_client_demod);
1257 		return -ENODEV;
1258 	}
1259 
1260 	/* delegate signal strength measurement to tuner */
1261 	dvb->fe[0]->ops.read_signal_strength =
1262 			dvb->fe[0]->ops.tuner_ops.get_rf_strength;
1263 
1264 	/* attach SEC */
1265 	a8293_pdata.dvb_frontend = dvb->fe[0];
1266 	dvb->i2c_client_sec = dvb_module_probe("a8293", NULL,
1267 					       &dev->i2c_adap[dev->def_i2c_bus],
1268 					       0x08, &a8293_pdata);
1269 	if (!dvb->i2c_client_sec) {
1270 		dvb_module_release(dvb->i2c_client_tuner);
1271 		dvb_module_release(dvb->i2c_client_demod);
1272 		return -ENODEV;
1273 	}
1274 
1275 	return 0;
1276 }
1277 
1278 static int em28178_dvb_init_pctv_292e(struct em28xx *dev)
1279 {
1280 	struct em28xx_dvb *dvb = dev->dvb;
1281 	struct i2c_adapter *adapter;
1282 	struct si2168_config si2168_config = {};
1283 	struct si2157_config si2157_config = {};
1284 
1285 	/* attach demod */
1286 	si2168_config.i2c_adapter = &adapter;
1287 	si2168_config.fe = &dvb->fe[0];
1288 	si2168_config.ts_mode = SI2168_TS_PARALLEL;
1289 	si2168_config.spectral_inversion = true;
1290 
1291 	dvb->i2c_client_demod = dvb_module_probe("si2168", NULL,
1292 						 &dev->i2c_adap[dev->def_i2c_bus],
1293 						 0x64, &si2168_config);
1294 	if (!dvb->i2c_client_demod)
1295 		return -ENODEV;
1296 
1297 	/* attach tuner */
1298 	si2157_config.fe = dvb->fe[0];
1299 	si2157_config.if_port = 1;
1300 #ifdef CONFIG_MEDIA_CONTROLLER_DVB
1301 	si2157_config.mdev = dev->media_dev;
1302 #endif
1303 	dvb->i2c_client_tuner = dvb_module_probe("si2157", NULL,
1304 						 adapter,
1305 						 0x60, &si2157_config);
1306 	if (!dvb->i2c_client_tuner) {
1307 		dvb_module_release(dvb->i2c_client_demod);
1308 		return -ENODEV;
1309 	}
1310 	dvb->fe[0]->ops.set_lna = em28xx_pctv_292e_set_lna;
1311 
1312 	return 0;
1313 }
1314 
1315 static int em28178_dvb_init_terratec_t2_stick_hd(struct em28xx *dev)
1316 {
1317 	struct em28xx_dvb *dvb = dev->dvb;
1318 	struct i2c_adapter *adapter;
1319 	struct si2168_config si2168_config = {};
1320 	struct si2157_config si2157_config = {};
1321 
1322 	/* attach demod */
1323 	si2168_config.i2c_adapter = &adapter;
1324 	si2168_config.fe = &dvb->fe[0];
1325 	si2168_config.ts_mode = SI2168_TS_PARALLEL;
1326 
1327 	dvb->i2c_client_demod = dvb_module_probe("si2168", NULL,
1328 						 &dev->i2c_adap[dev->def_i2c_bus],
1329 						 0x64, &si2168_config);
1330 	if (!dvb->i2c_client_demod)
1331 		return -ENODEV;
1332 
1333 	/* attach tuner */
1334 	memset(&si2157_config, 0, sizeof(si2157_config));
1335 	si2157_config.fe = dvb->fe[0];
1336 	si2157_config.if_port = 0;
1337 #ifdef CONFIG_MEDIA_CONTROLLER_DVB
1338 	si2157_config.mdev = dev->media_dev;
1339 #endif
1340 	dvb->i2c_client_tuner = dvb_module_probe("si2157", "si2146",
1341 						 adapter,
1342 						 0x60, &si2157_config);
1343 	if (!dvb->i2c_client_tuner) {
1344 		dvb_module_release(dvb->i2c_client_demod);
1345 		return -ENODEV;
1346 	}
1347 
1348 	return 0;
1349 }
1350 
1351 static int em28178_dvb_init_plex_px_bcud(struct em28xx *dev)
1352 {
1353 	struct em28xx_dvb *dvb = dev->dvb;
1354 	struct tc90522_config tc90522_config = {};
1355 	struct qm1d1c0042_config qm1d1c0042_config = {};
1356 
1357 	/* attach demod */
1358 	dvb->i2c_client_demod = dvb_module_probe("tc90522", "tc90522sat",
1359 						 &dev->i2c_adap[dev->def_i2c_bus],
1360 						 0x15, &tc90522_config);
1361 	if (!dvb->i2c_client_demod)
1362 		return -ENODEV;
1363 
1364 	/* attach tuner */
1365 	qm1d1c0042_config.fe = tc90522_config.fe;
1366 	qm1d1c0042_config.lpf = 1;
1367 
1368 	dvb->i2c_client_tuner = dvb_module_probe("qm1d1c0042", NULL,
1369 						 tc90522_config.tuner_i2c,
1370 						 0x61, &qm1d1c0042_config);
1371 	if (!dvb->i2c_client_tuner) {
1372 		dvb_module_release(dvb->i2c_client_demod);
1373 		return -ENODEV;
1374 	}
1375 
1376 	dvb->fe[0] = tc90522_config.fe;
1377 	px_bcud_init(dev);
1378 
1379 	return 0;
1380 }
1381 
1382 static int em28174_dvb_init_hauppauge_wintv_dualhd_dvb(struct em28xx *dev)
1383 {
1384 	struct em28xx_dvb *dvb = dev->dvb;
1385 	struct i2c_adapter *adapter;
1386 	struct si2168_config si2168_config = {};
1387 	struct si2157_config si2157_config = {};
1388 	unsigned char addr;
1389 
1390 	/* attach demod */
1391 	si2168_config.i2c_adapter = &adapter;
1392 	si2168_config.fe = &dvb->fe[0];
1393 	si2168_config.ts_mode = SI2168_TS_SERIAL;
1394 	si2168_config.spectral_inversion = true;
1395 	addr = (dev->ts == PRIMARY_TS) ? 0x64 : 0x67;
1396 
1397 	dvb->i2c_client_demod = dvb_module_probe("si2168", NULL,
1398 						 &dev->i2c_adap[dev->def_i2c_bus],
1399 						 addr, &si2168_config);
1400 	if (!dvb->i2c_client_demod)
1401 		return -ENODEV;
1402 
1403 	/* attach tuner */
1404 	memset(&si2157_config, 0, sizeof(si2157_config));
1405 	si2157_config.fe = dvb->fe[0];
1406 	si2157_config.if_port = 1;
1407 #ifdef CONFIG_MEDIA_CONTROLLER_DVB
1408 	si2157_config.mdev = dev->media_dev;
1409 #endif
1410 	addr = (dev->ts == PRIMARY_TS) ? 0x60 : 0x63;
1411 
1412 	dvb->i2c_client_tuner = dvb_module_probe("si2157", NULL,
1413 						 adapter,
1414 						 addr, &si2157_config);
1415 	if (!dvb->i2c_client_tuner) {
1416 		dvb_module_release(dvb->i2c_client_demod);
1417 		return -ENODEV;
1418 	}
1419 
1420 	return 0;
1421 }
1422 
1423 static int em28174_dvb_init_hauppauge_wintv_dualhd_01595(struct em28xx *dev)
1424 {
1425 	struct em28xx_dvb *dvb = dev->dvb;
1426 	struct i2c_adapter *adapter;
1427 	struct lgdt3306a_config lgdt3306a_config =  {};
1428 	struct si2157_config si2157_config = {};
1429 	unsigned char addr;
1430 
1431 	/* attach demod */
1432 	lgdt3306a_config = hauppauge_01595_lgdt3306a_config;
1433 	lgdt3306a_config.fe = &dvb->fe[0];
1434 	lgdt3306a_config.i2c_adapter = &adapter;
1435 	addr = (dev->ts == PRIMARY_TS) ? 0x59 : 0x0e;
1436 
1437 	dvb->i2c_client_demod = dvb_module_probe("lgdt3306a", NULL,
1438 						 &dev->i2c_adap[dev->def_i2c_bus],
1439 						 addr, &lgdt3306a_config);
1440 	if (!dvb->i2c_client_demod)
1441 		return -ENODEV;
1442 
1443 	/* attach tuner */
1444 	si2157_config.fe = dvb->fe[0];
1445 	si2157_config.if_port = 1;
1446 	si2157_config.inversion = 1;
1447 #ifdef CONFIG_MEDIA_CONTROLLER_DVB
1448 	si2157_config.mdev = dev->media_dev;
1449 #endif
1450 	addr = (dev->ts == PRIMARY_TS) ? 0x60 : 0x62;
1451 
1452 	dvb->i2c_client_tuner = dvb_module_probe("si2157", NULL,
1453 						 adapter,
1454 						 addr, &si2157_config);
1455 	if (!dvb->i2c_client_tuner) {
1456 		dvb_module_release(dvb->i2c_client_demod);
1457 		return -ENODEV;
1458 	}
1459 
1460 	return 0;
1461 }
1462 
1463 static int em2874_dvb_init_hauppauge_usb_quadhd(struct em28xx *dev)
1464 {
1465 	struct em28xx_dvb *dvb = dev->dvb;
1466 	struct mxl692_config mxl692_config = {};
1467 	unsigned char addr;
1468 
1469 	/* attach demod/tuner combo */
1470 	mxl692_config.id = (dev->ts == PRIMARY_TS) ? 0 : 1;
1471 	mxl692_config.fe = &dvb->fe[0];
1472 	addr = (dev->ts == PRIMARY_TS) ? 0x60 : 0x63;
1473 
1474 	dvb->i2c_client_demod = dvb_module_probe("mxl692", NULL,
1475 						 &dev->i2c_adap[dev->def_i2c_bus],
1476 						 addr, &mxl692_config);
1477 	if (!dvb->i2c_client_demod)
1478 		return -ENODEV;
1479 
1480 	return 0;
1481 }
1482 
1483 static int em28xx_dvb_init(struct em28xx *dev)
1484 {
1485 	int result = 0, dvb_alt = 0;
1486 	struct em28xx_dvb *dvb;
1487 	struct usb_device *udev;
1488 
1489 	if (dev->is_audio_only) {
1490 		/* Shouldn't initialize IR for this interface */
1491 		return 0;
1492 	}
1493 
1494 	if (!dev->board.has_dvb) {
1495 		/* This device does not support the extension */
1496 		return 0;
1497 	}
1498 
1499 	dev_info(&dev->intf->dev, "Binding DVB extension\n");
1500 
1501 	dvb = kzalloc(sizeof(*dvb), GFP_KERNEL);
1502 	if (!dvb)
1503 		return -ENOMEM;
1504 
1505 	dev->dvb = dvb;
1506 	dvb->fe[0] = NULL;
1507 	dvb->fe[1] = NULL;
1508 
1509 	/* pre-allocate DVB usb transfer buffers */
1510 	if (dev->dvb_xfer_bulk) {
1511 		result = em28xx_alloc_urbs(dev, EM28XX_DIGITAL_MODE,
1512 					   dev->dvb_xfer_bulk,
1513 					   EM28XX_DVB_NUM_BUFS,
1514 					   512,
1515 					   EM28XX_DVB_BULK_PACKET_MULTIPLIER);
1516 	} else {
1517 		result = em28xx_alloc_urbs(dev, EM28XX_DIGITAL_MODE,
1518 					   dev->dvb_xfer_bulk,
1519 					   EM28XX_DVB_NUM_BUFS,
1520 					   dev->dvb_max_pkt_size_isoc,
1521 					   EM28XX_DVB_NUM_ISOC_PACKETS);
1522 	}
1523 	if (result) {
1524 		dev_err(&dev->intf->dev,
1525 			"failed to pre-allocate USB transfer buffers for DVB.\n");
1526 		kfree(dvb);
1527 		dev->dvb = NULL;
1528 		return result;
1529 	}
1530 
1531 	mutex_lock(&dev->lock);
1532 	em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
1533 	/* init frontend */
1534 	switch (dev->model) {
1535 	case EM2874_BOARD_LEADERSHIP_ISDBT:
1536 		dvb->fe[0] = dvb_attach(s921_attach,
1537 					&sharp_isdbt,
1538 					&dev->i2c_adap[dev->def_i2c_bus]);
1539 
1540 		if (!dvb->fe[0]) {
1541 			result = -EINVAL;
1542 			goto out_free;
1543 		}
1544 
1545 		break;
1546 	case EM2883_BOARD_HAUPPAUGE_WINTV_HVR_850:
1547 	case EM2883_BOARD_HAUPPAUGE_WINTV_HVR_950:
1548 	case EM2880_BOARD_PINNACLE_PCTV_HD_PRO:
1549 	case EM2880_BOARD_AMD_ATI_TV_WONDER_HD_600:
1550 		dvb->fe[0] = dvb_attach(lgdt330x_attach,
1551 					&em2880_lgdt3303_dev,
1552 					0x0e,
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_KWORLD_DVB_310U:
1560 		dvb->fe[0] = dvb_attach(zl10353_attach,
1561 					&em28xx_zl10353_with_xc3028,
1562 					&dev->i2c_adap[dev->def_i2c_bus]);
1563 		if (em28xx_attach_xc3028(0x61, dev) < 0) {
1564 			result = -EINVAL;
1565 			goto out_free;
1566 		}
1567 		break;
1568 	case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900:
1569 	case EM2882_BOARD_TERRATEC_HYBRID_XS:
1570 	case EM2880_BOARD_EMPIRE_DUAL_TV:
1571 	case EM2882_BOARD_ZOLID_HYBRID_TV_STICK:
1572 		dvb->fe[0] = dvb_attach(zl10353_attach,
1573 					&em28xx_zl10353_xc3028_no_i2c_gate,
1574 					&dev->i2c_adap[dev->def_i2c_bus]);
1575 		if (em28xx_attach_xc3028(0x61, dev) < 0) {
1576 			result = -EINVAL;
1577 			goto out_free;
1578 		}
1579 		break;
1580 	case EM2880_BOARD_TERRATEC_HYBRID_XS:
1581 	case EM2880_BOARD_TERRATEC_HYBRID_XS_FR:
1582 	case EM2881_BOARD_PINNACLE_HYBRID_PRO:
1583 	case EM2882_BOARD_DIKOM_DK300:
1584 	case EM2882_BOARD_KWORLD_VS_DVBT:
1585 		/*
1586 		 * Those boards could have either a zl10353 or a mt352.
1587 		 * If the chip id isn't for zl10353, try mt352.
1588 		 */
1589 		dvb->fe[0] = dvb_attach(zl10353_attach,
1590 					&em28xx_zl10353_xc3028_no_i2c_gate,
1591 					&dev->i2c_adap[dev->def_i2c_bus]);
1592 		if (!dvb->fe[0])
1593 			dvb->fe[0] = dvb_attach(mt352_attach,
1594 						&terratec_xs_mt352_cfg,
1595 						&dev->i2c_adap[dev->def_i2c_bus]);
1596 
1597 		if (em28xx_attach_xc3028(0x61, dev) < 0) {
1598 			result = -EINVAL;
1599 			goto out_free;
1600 		}
1601 		break;
1602 	case EM2870_BOARD_TERRATEC_XS_MT2060:
1603 		dvb->fe[0] = dvb_attach(zl10353_attach,
1604 					&em28xx_zl10353_no_i2c_gate_dev,
1605 					&dev->i2c_adap[dev->def_i2c_bus]);
1606 		if (dvb->fe[0]) {
1607 			dvb_attach(mt2060_attach, dvb->fe[0],
1608 				   &dev->i2c_adap[dev->def_i2c_bus],
1609 				   &em28xx_mt2060_config, 1220);
1610 		}
1611 		break;
1612 	case EM2870_BOARD_KWORLD_355U:
1613 		dvb->fe[0] = dvb_attach(zl10353_attach,
1614 					&em28xx_zl10353_no_i2c_gate_dev,
1615 					&dev->i2c_adap[dev->def_i2c_bus]);
1616 		if (dvb->fe[0])
1617 			dvb_attach(qt1010_attach, dvb->fe[0],
1618 				   &dev->i2c_adap[dev->def_i2c_bus],
1619 				   &em28xx_qt1010_config);
1620 		break;
1621 	case EM2883_BOARD_KWORLD_HYBRID_330U:
1622 	case EM2882_BOARD_EVGA_INDTUBE:
1623 		dvb->fe[0] = dvb_attach(s5h1409_attach,
1624 					&em28xx_s5h1409_with_xc3028,
1625 					&dev->i2c_adap[dev->def_i2c_bus]);
1626 		if (em28xx_attach_xc3028(0x61, dev) < 0) {
1627 			result = -EINVAL;
1628 			goto out_free;
1629 		}
1630 		break;
1631 	case EM2882_BOARD_KWORLD_ATSC_315U:
1632 		dvb->fe[0] = dvb_attach(lgdt330x_attach,
1633 					&em2880_lgdt3303_dev,
1634 					0x0e,
1635 					&dev->i2c_adap[dev->def_i2c_bus]);
1636 		if (dvb->fe[0]) {
1637 			if (!dvb_attach(simple_tuner_attach, dvb->fe[0],
1638 					&dev->i2c_adap[dev->def_i2c_bus],
1639 					0x61, TUNER_THOMSON_DTT761X)) {
1640 				result = -EINVAL;
1641 				goto out_free;
1642 			}
1643 		}
1644 		break;
1645 	case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900_R2:
1646 	case EM2882_BOARD_PINNACLE_HYBRID_PRO_330E:
1647 		dvb->fe[0] = dvb_attach(drxd_attach, &em28xx_drxd, NULL,
1648 					&dev->i2c_adap[dev->def_i2c_bus],
1649 					&dev->intf->dev);
1650 		if (em28xx_attach_xc3028(0x61, dev) < 0) {
1651 			result = -EINVAL;
1652 			goto out_free;
1653 		}
1654 		break;
1655 	case EM2870_BOARD_REDDO_DVB_C_USB_BOX:
1656 		/* Philips CU1216L NIM (Philips TDA10023 + Infineon TUA6034) */
1657 		dvb->fe[0] = dvb_attach(tda10023_attach,
1658 					&em28xx_tda10023_config,
1659 					&dev->i2c_adap[dev->def_i2c_bus],
1660 					0x48);
1661 		if (dvb->fe[0]) {
1662 			if (!dvb_attach(simple_tuner_attach, dvb->fe[0],
1663 					&dev->i2c_adap[dev->def_i2c_bus],
1664 					0x60, TUNER_PHILIPS_CU1216L)) {
1665 				result = -EINVAL;
1666 				goto out_free;
1667 			}
1668 		}
1669 		break;
1670 	case EM2870_BOARD_KWORLD_A340:
1671 		dvb->fe[0] = dvb_attach(lgdt3305_attach,
1672 					&em2870_lgdt3304_dev,
1673 					&dev->i2c_adap[dev->def_i2c_bus]);
1674 		if (!dvb->fe[0]) {
1675 			result = -EINVAL;
1676 			goto out_free;
1677 		}
1678 		if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
1679 				&dev->i2c_adap[dev->def_i2c_bus],
1680 				&kworld_a340_config)) {
1681 			dvb_frontend_detach(dvb->fe[0]);
1682 			result = -EINVAL;
1683 			goto out_free;
1684 		}
1685 		break;
1686 	case EM28174_BOARD_PCTV_290E:
1687 		/* set default GPIO0 for LNA, used if GPIOLIB is undefined */
1688 		dvb->lna_gpio = CXD2820R_GPIO_E | CXD2820R_GPIO_O |
1689 				CXD2820R_GPIO_L;
1690 		dvb->fe[0] = dvb_attach(cxd2820r_attach,
1691 					&em28xx_cxd2820r_config,
1692 					&dev->i2c_adap[dev->def_i2c_bus],
1693 					&dvb->lna_gpio);
1694 		if (dvb->fe[0]) {
1695 			/* FE 0 attach tuner */
1696 			if (!dvb_attach(tda18271_attach,
1697 					dvb->fe[0],
1698 					0x60,
1699 					&dev->i2c_adap[dev->def_i2c_bus],
1700 					&em28xx_cxd2820r_tda18271_config)) {
1701 				dvb_frontend_detach(dvb->fe[0]);
1702 				result = -EINVAL;
1703 				goto out_free;
1704 			}
1705 
1706 #ifdef CONFIG_GPIOLIB
1707 			/* enable LNA for DVB-T, DVB-T2 and DVB-C */
1708 			result = gpio_request_one(dvb->lna_gpio,
1709 						  GPIOF_OUT_INIT_LOW, NULL);
1710 			if (result)
1711 				dev_err(&dev->intf->dev,
1712 					"gpio request failed %d\n",
1713 					result);
1714 			else
1715 				gpio_free(dvb->lna_gpio);
1716 
1717 			result = 0; /* continue even set LNA fails */
1718 #endif
1719 			dvb->fe[0]->ops.set_lna = em28xx_pctv_290e_set_lna;
1720 		}
1721 
1722 		break;
1723 	case EM2884_BOARD_HAUPPAUGE_WINTV_HVR_930C:
1724 	{
1725 		struct xc5000_config cfg = {};
1726 
1727 		hauppauge_hvr930c_init(dev);
1728 
1729 		dvb->fe[0] = dvb_attach(drxk_attach,
1730 					&hauppauge_930c_drxk,
1731 					&dev->i2c_adap[dev->def_i2c_bus]);
1732 		if (!dvb->fe[0]) {
1733 			result = -EINVAL;
1734 			goto out_free;
1735 		}
1736 		/* FIXME: do we need a pll semaphore? */
1737 		dvb->fe[0]->sec_priv = dvb;
1738 		sema_init(&dvb->pll_mutex, 1);
1739 		dvb->gate_ctrl = dvb->fe[0]->ops.i2c_gate_ctrl;
1740 		dvb->fe[0]->ops.i2c_gate_ctrl = drxk_gate_ctrl;
1741 
1742 		/* Attach xc5000 */
1743 		cfg.i2c_address  = 0x61;
1744 		cfg.if_khz = 4000;
1745 
1746 		if (dvb->fe[0]->ops.i2c_gate_ctrl)
1747 			dvb->fe[0]->ops.i2c_gate_ctrl(dvb->fe[0], 1);
1748 		if (!dvb_attach(xc5000_attach, dvb->fe[0],
1749 				&dev->i2c_adap[dev->def_i2c_bus], &cfg)) {
1750 			result = -EINVAL;
1751 			goto out_free;
1752 		}
1753 		if (dvb->fe[0]->ops.i2c_gate_ctrl)
1754 			dvb->fe[0]->ops.i2c_gate_ctrl(dvb->fe[0], 0);
1755 
1756 		break;
1757 	}
1758 	case EM2884_BOARD_TERRATEC_H5:
1759 		terratec_h5_init(dev);
1760 
1761 		dvb->fe[0] = dvb_attach(drxk_attach, &terratec_h5_drxk,
1762 					&dev->i2c_adap[dev->def_i2c_bus]);
1763 		if (!dvb->fe[0]) {
1764 			result = -EINVAL;
1765 			goto out_free;
1766 		}
1767 		/* FIXME: do we need a pll semaphore? */
1768 		dvb->fe[0]->sec_priv = dvb;
1769 		sema_init(&dvb->pll_mutex, 1);
1770 		dvb->gate_ctrl = dvb->fe[0]->ops.i2c_gate_ctrl;
1771 		dvb->fe[0]->ops.i2c_gate_ctrl = drxk_gate_ctrl;
1772 
1773 		/* Attach tda18271 to DVB-C frontend */
1774 		if (dvb->fe[0]->ops.i2c_gate_ctrl)
1775 			dvb->fe[0]->ops.i2c_gate_ctrl(dvb->fe[0], 1);
1776 		if (!dvb_attach(tda18271c2dd_attach, dvb->fe[0],
1777 				&dev->i2c_adap[dev->def_i2c_bus], 0x60)) {
1778 			result = -EINVAL;
1779 			goto out_free;
1780 		}
1781 		if (dvb->fe[0]->ops.i2c_gate_ctrl)
1782 			dvb->fe[0]->ops.i2c_gate_ctrl(dvb->fe[0], 0);
1783 
1784 		break;
1785 	case EM2884_BOARD_C3TECH_DIGITAL_DUO:
1786 		dvb->fe[0] = dvb_attach(mb86a20s_attach,
1787 					&c3tech_duo_mb86a20s_config,
1788 					&dev->i2c_adap[dev->def_i2c_bus]);
1789 		if (dvb->fe[0])
1790 			dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
1791 				   &dev->i2c_adap[dev->def_i2c_bus],
1792 				   &c3tech_duo_tda18271_config);
1793 		break;
1794 	case EM28174_BOARD_PCTV_460E:
1795 		result = em28174_dvb_init_pctv_460e(dev);
1796 		if (result)
1797 			goto out_free;
1798 		break;
1799 	case EM2874_BOARD_DELOCK_61959:
1800 	case EM2874_BOARD_MAXMEDIA_UB425_TC:
1801 		/* attach demodulator */
1802 		dvb->fe[0] = dvb_attach(drxk_attach, &maxmedia_ub425_tc_drxk,
1803 					&dev->i2c_adap[dev->def_i2c_bus]);
1804 
1805 		if (dvb->fe[0]) {
1806 			/* disable I2C-gate */
1807 			dvb->fe[0]->ops.i2c_gate_ctrl = NULL;
1808 
1809 			/* attach tuner */
1810 			if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
1811 					&dev->i2c_adap[dev->def_i2c_bus],
1812 					&em28xx_cxd2820r_tda18271_config)) {
1813 				dvb_frontend_detach(dvb->fe[0]);
1814 				result = -EINVAL;
1815 				goto out_free;
1816 			}
1817 		}
1818 		break;
1819 	case EM2884_BOARD_PCTV_510E:
1820 	case EM2884_BOARD_PCTV_520E:
1821 		pctv_520e_init(dev);
1822 
1823 		/* attach demodulator */
1824 		dvb->fe[0] = dvb_attach(drxk_attach, &pctv_520e_drxk,
1825 					&dev->i2c_adap[dev->def_i2c_bus]);
1826 
1827 		if (dvb->fe[0]) {
1828 			/* attach tuner */
1829 			if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
1830 					&dev->i2c_adap[dev->def_i2c_bus],
1831 					&em28xx_cxd2820r_tda18271_config)) {
1832 				dvb_frontend_detach(dvb->fe[0]);
1833 				result = -EINVAL;
1834 				goto out_free;
1835 			}
1836 		}
1837 		break;
1838 	case EM2884_BOARD_ELGATO_EYETV_HYBRID_2008:
1839 	case EM2884_BOARD_CINERGY_HTC_STICK:
1840 	case EM2884_BOARD_TERRATEC_H6:
1841 		terratec_htc_stick_init(dev);
1842 
1843 		/* attach demodulator */
1844 		dvb->fe[0] = dvb_attach(drxk_attach, &terratec_htc_stick_drxk,
1845 					&dev->i2c_adap[dev->def_i2c_bus]);
1846 		if (!dvb->fe[0]) {
1847 			result = -EINVAL;
1848 			goto out_free;
1849 		}
1850 
1851 		/* Attach the demodulator. */
1852 		if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
1853 				&dev->i2c_adap[dev->def_i2c_bus],
1854 				&em28xx_cxd2820r_tda18271_config)) {
1855 			result = -EINVAL;
1856 			goto out_free;
1857 		}
1858 		break;
1859 	case EM2884_BOARD_TERRATEC_HTC_USB_XS:
1860 		terratec_htc_usb_xs_init(dev);
1861 
1862 		/* attach demodulator */
1863 		dvb->fe[0] = dvb_attach(drxk_attach, &terratec_htc_stick_drxk,
1864 					&dev->i2c_adap[dev->def_i2c_bus]);
1865 		if (!dvb->fe[0]) {
1866 			result = -EINVAL;
1867 			goto out_free;
1868 		}
1869 
1870 		/* Attach the demodulator. */
1871 		if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
1872 				&dev->i2c_adap[dev->def_i2c_bus],
1873 				&em28xx_cxd2820r_tda18271_config)) {
1874 			result = -EINVAL;
1875 			goto out_free;
1876 		}
1877 		break;
1878 	case EM2874_BOARD_KWORLD_UB435Q_V2:
1879 		dvb->fe[0] = dvb_attach(lgdt3305_attach,
1880 					&em2874_lgdt3305_dev,
1881 					&dev->i2c_adap[dev->def_i2c_bus]);
1882 		if (!dvb->fe[0]) {
1883 			result = -EINVAL;
1884 			goto out_free;
1885 		}
1886 
1887 		/* Attach the demodulator. */
1888 		if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
1889 				&dev->i2c_adap[dev->def_i2c_bus],
1890 				&kworld_ub435q_v2_config)) {
1891 			result = -EINVAL;
1892 			goto out_free;
1893 		}
1894 		break;
1895 	case EM2874_BOARD_KWORLD_UB435Q_V3:
1896 	{
1897 		struct i2c_adapter *adapter = &dev->i2c_adap[dev->def_i2c_bus];
1898 
1899 		dvb->fe[0] = dvb_attach(lgdt3305_attach,
1900 					&em2874_lgdt3305_nogate_dev,
1901 					&dev->i2c_adap[dev->def_i2c_bus]);
1902 		if (!dvb->fe[0]) {
1903 			result = -EINVAL;
1904 			goto out_free;
1905 		}
1906 
1907 		/* attach tuner */
1908 		kworld_ub435q_v3_config.fe = dvb->fe[0];
1909 
1910 		dvb->i2c_client_tuner = dvb_module_probe("tda18212", NULL,
1911 							 adapter, 0x60,
1912 							 &kworld_ub435q_v3_config);
1913 		if (!dvb->i2c_client_tuner) {
1914 			dvb_frontend_detach(dvb->fe[0]);
1915 			result = -ENODEV;
1916 			goto out_free;
1917 		}
1918 		break;
1919 	}
1920 	case EM2874_BOARD_PCTV_HD_MINI_80E:
1921 		dvb->fe[0] = dvb_attach(drx39xxj_attach,
1922 					&dev->i2c_adap[dev->def_i2c_bus]);
1923 		if (dvb->fe[0]) {
1924 			dvb->fe[0] = dvb_attach(tda18271_attach, dvb->fe[0],
1925 						0x60,
1926 						&dev->i2c_adap[dev->def_i2c_bus],
1927 						&pinnacle_80e_dvb_config);
1928 			if (!dvb->fe[0]) {
1929 				result = -EINVAL;
1930 				goto out_free;
1931 			}
1932 		}
1933 		break;
1934 	case EM28178_BOARD_PCTV_461E:
1935 		result = em28178_dvb_init_pctv_461e(dev);
1936 		if (result)
1937 			goto out_free;
1938 		break;
1939 	case EM28178_BOARD_PCTV_461E_V2:
1940 		result = em28178_dvb_init_pctv_461e_v2(dev);
1941 		if (result)
1942 			goto out_free;
1943 		break;
1944 	case EM28178_BOARD_PCTV_292E:
1945 		result = em28178_dvb_init_pctv_292e(dev);
1946 		if (result)
1947 			goto out_free;
1948 		break;
1949 	case EM28178_BOARD_TERRATEC_T2_STICK_HD:
1950 		result = em28178_dvb_init_terratec_t2_stick_hd(dev);
1951 		if (result)
1952 			goto out_free;
1953 		break;
1954 	case EM28178_BOARD_PLEX_PX_BCUD:
1955 		result = em28178_dvb_init_plex_px_bcud(dev);
1956 		if (result)
1957 			goto out_free;
1958 		break;
1959 	case EM28174_BOARD_HAUPPAUGE_WINTV_DUALHD_DVB:
1960 		result = em28174_dvb_init_hauppauge_wintv_dualhd_dvb(dev);
1961 		if (result)
1962 			goto out_free;
1963 		break;
1964 	case EM28174_BOARD_HAUPPAUGE_WINTV_DUALHD_01595:
1965 		result = em28174_dvb_init_hauppauge_wintv_dualhd_01595(dev);
1966 		if (result)
1967 			goto out_free;
1968 		break;
1969 	case EM2874_BOARD_HAUPPAUGE_USB_QUADHD:
1970 		result = em2874_dvb_init_hauppauge_usb_quadhd(dev);
1971 		if (result)
1972 			goto out_free;
1973 		break;
1974 	default:
1975 		dev_err(&dev->intf->dev,
1976 			"The frontend of your DVB/ATSC card isn't supported yet\n");
1977 		break;
1978 	}
1979 	if (!dvb->fe[0]) {
1980 		dev_err(&dev->intf->dev, "frontend initialization failed\n");
1981 		result = -EINVAL;
1982 		goto out_free;
1983 	}
1984 	/* define general-purpose callback pointer */
1985 	dvb->fe[0]->callback = em28xx_tuner_callback;
1986 	if (dvb->fe[1])
1987 		dvb->fe[1]->callback = em28xx_tuner_callback;
1988 
1989 	/* register everything */
1990 	result = em28xx_register_dvb(dvb, THIS_MODULE, dev, &dev->intf->dev);
1991 
1992 	if (result < 0)
1993 		goto out_free;
1994 
1995 	if (dev->dvb_xfer_bulk) {
1996 		dvb_alt = 0;
1997 	} else { /* isoc */
1998 		dvb_alt = dev->dvb_alt_isoc;
1999 	}
2000 
2001 	udev = interface_to_usbdev(dev->intf);
2002 	usb_set_interface(udev, dev->ifnum, dvb_alt);
2003 	dev_info(&dev->intf->dev, "DVB extension successfully initialized\n");
2004 
2005 	kref_get(&dev->ref);
2006 
2007 ret:
2008 	em28xx_set_mode(dev, EM28XX_SUSPEND);
2009 	mutex_unlock(&dev->lock);
2010 	return result;
2011 
2012 out_free:
2013 	kfree(dvb);
2014 	dev->dvb = NULL;
2015 	goto ret;
2016 }
2017 
2018 static inline void prevent_sleep(struct dvb_frontend_ops *ops)
2019 {
2020 	ops->set_voltage = NULL;
2021 	ops->sleep = NULL;
2022 	ops->tuner_ops.sleep = NULL;
2023 }
2024 
2025 static int em28xx_dvb_fini(struct em28xx *dev)
2026 {
2027 	struct em28xx_dvb *dvb;
2028 
2029 	if (dev->is_audio_only) {
2030 		/* Shouldn't initialize IR for this interface */
2031 		return 0;
2032 	}
2033 
2034 	if (!dev->board.has_dvb) {
2035 		/* This device does not support the extension */
2036 		return 0;
2037 	}
2038 
2039 	if (!dev->dvb)
2040 		return 0;
2041 
2042 	dev_info(&dev->intf->dev, "Closing DVB extension\n");
2043 
2044 	dvb = dev->dvb;
2045 
2046 	em28xx_uninit_usb_xfer(dev, EM28XX_DIGITAL_MODE);
2047 
2048 	if (dev->disconnected) {
2049 		/*
2050 		 * We cannot tell the device to sleep
2051 		 * once it has been unplugged.
2052 		 */
2053 		if (dvb->fe[0]) {
2054 			prevent_sleep(&dvb->fe[0]->ops);
2055 			dvb->fe[0]->exit = DVB_FE_DEVICE_REMOVED;
2056 		}
2057 		if (dvb->fe[1]) {
2058 			prevent_sleep(&dvb->fe[1]->ops);
2059 			dvb->fe[1]->exit = DVB_FE_DEVICE_REMOVED;
2060 		}
2061 	}
2062 
2063 	em28xx_unregister_dvb(dvb);
2064 
2065 	/* release I2C module bindings */
2066 	dvb_module_release(dvb->i2c_client_sec);
2067 	dvb_module_release(dvb->i2c_client_tuner);
2068 	dvb_module_release(dvb->i2c_client_demod);
2069 
2070 	kfree(dvb);
2071 	dev->dvb = NULL;
2072 	kref_put(&dev->ref, em28xx_free_device);
2073 
2074 	return 0;
2075 }
2076 
2077 static int em28xx_dvb_suspend(struct em28xx *dev)
2078 {
2079 	int ret = 0;
2080 
2081 	if (dev->is_audio_only)
2082 		return 0;
2083 
2084 	if (!dev->board.has_dvb)
2085 		return 0;
2086 
2087 	dev_info(&dev->intf->dev, "Suspending DVB extension\n");
2088 	if (dev->dvb) {
2089 		struct em28xx_dvb *dvb = dev->dvb;
2090 
2091 		if (dvb->fe[0]) {
2092 			ret = dvb_frontend_suspend(dvb->fe[0]);
2093 			dev_info(&dev->intf->dev, "fe0 suspend %d\n", ret);
2094 		}
2095 		if (dvb->fe[1]) {
2096 			dvb_frontend_suspend(dvb->fe[1]);
2097 			dev_info(&dev->intf->dev, "fe1 suspend %d\n", ret);
2098 		}
2099 	}
2100 
2101 	return 0;
2102 }
2103 
2104 static int em28xx_dvb_resume(struct em28xx *dev)
2105 {
2106 	int ret = 0;
2107 
2108 	if (dev->is_audio_only)
2109 		return 0;
2110 
2111 	if (!dev->board.has_dvb)
2112 		return 0;
2113 
2114 	dev_info(&dev->intf->dev, "Resuming DVB extension\n");
2115 	if (dev->dvb) {
2116 		struct em28xx_dvb *dvb = dev->dvb;
2117 
2118 		if (dvb->fe[0]) {
2119 			ret = dvb_frontend_resume(dvb->fe[0]);
2120 			dev_info(&dev->intf->dev, "fe0 resume %d\n", ret);
2121 		}
2122 
2123 		if (dvb->fe[1]) {
2124 			ret = dvb_frontend_resume(dvb->fe[1]);
2125 			dev_info(&dev->intf->dev, "fe1 resume %d\n", ret);
2126 		}
2127 	}
2128 
2129 	return 0;
2130 }
2131 
2132 static struct em28xx_ops dvb_ops = {
2133 	.id   = EM28XX_DVB,
2134 	.name = "Em28xx dvb Extension",
2135 	.init = em28xx_dvb_init,
2136 	.fini = em28xx_dvb_fini,
2137 	.suspend = em28xx_dvb_suspend,
2138 	.resume = em28xx_dvb_resume,
2139 };
2140 
2141 static int __init em28xx_dvb_register(void)
2142 {
2143 	return em28xx_register_extension(&dvb_ops);
2144 }
2145 
2146 static void __exit em28xx_dvb_unregister(void)
2147 {
2148 	em28xx_unregister_extension(&dvb_ops);
2149 }
2150 
2151 module_init(em28xx_dvb_register);
2152 module_exit(em28xx_dvb_unregister);
2153