1 /*
2  DVB device driver for em28xx
3 
4  (c) 2008-2011 Mauro Carvalho Chehab <mchehab@infradead.org>
5 
6  (c) 2008 Devin Heitmueller <devin.heitmueller@gmail.com>
7 	- Fixes for the driver to properly work with HVR-950
8 	- Fixes for the driver to properly work with Pinnacle PCTV HD Pro Stick
9 	- Fixes for the driver to properly work with AMD ATI TV Wonder HD 600
10 
11  (c) 2008 Aidan Thornton <makosoft@googlemail.com>
12 
13  (c) 2012 Frank Schäfer <fschaefer.oss@googlemail.com>
14 
15  Based on cx88-dvb, saa7134-dvb and videobuf-dvb originally written by:
16 	(c) 2004, 2005 Chris Pascoe <c.pascoe@itee.uq.edu.au>
17 	(c) 2004 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
18 
19  This program is free software; you can redistribute it and/or modify
20  it under the terms of the GNU General Public License as published by
21  the Free Software Foundation; either version 2 of the License.
22  */
23 
24 #include <linux/kernel.h>
25 #include <linux/slab.h>
26 #include <linux/usb.h>
27 
28 #include "em28xx.h"
29 #include <media/v4l2-common.h>
30 #include <dvb_demux.h>
31 #include <dvb_net.h>
32 #include <dmxdev.h>
33 #include <media/tuner.h>
34 #include "tuner-simple.h"
35 #include <linux/gpio.h>
36 
37 #include "lgdt330x.h"
38 #include "lgdt3305.h"
39 #include "zl10353.h"
40 #include "s5h1409.h"
41 #include "mt2060.h"
42 #include "mt352.h"
43 #include "mt352_priv.h" /* FIXME */
44 #include "tda1002x.h"
45 #include "drx39xyj/drx39xxj.h"
46 #include "tda18271.h"
47 #include "s921.h"
48 #include "drxd.h"
49 #include "cxd2820r.h"
50 #include "tda18271c2dd.h"
51 #include "drxk.h"
52 #include "tda10071.h"
53 #include "tda18212.h"
54 #include "a8293.h"
55 #include "qt1010.h"
56 #include "mb86a20s.h"
57 #include "m88ds3103.h"
58 #include "ts2020.h"
59 #include "si2168.h"
60 #include "si2157.h"
61 #include "tc90522.h"
62 #include "qm1d1c0042.h"
63 
64 MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
65 MODULE_LICENSE("GPL");
66 MODULE_DESCRIPTION(DRIVER_DESC " - digital TV interface");
67 MODULE_VERSION(EM28XX_VERSION);
68 
69 static unsigned int debug;
70 module_param(debug, int, 0644);
71 MODULE_PARM_DESC(debug, "enable debug messages [dvb]");
72 
73 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
74 
75 #define dprintk(level, fmt, arg...) do {			\
76 if (debug >= level)						\
77 	printk(KERN_DEBUG "%s/2-dvb: " fmt, dev->name, ## arg);	\
78 } while (0)
79 
80 struct em28xx_dvb {
81 	struct dvb_frontend        *fe[2];
82 
83 	/* feed count management */
84 	struct mutex               lock;
85 	int                        nfeeds;
86 
87 	/* general boilerplate stuff */
88 	struct dvb_adapter         adapter;
89 	struct dvb_demux           demux;
90 	struct dmxdev              dmxdev;
91 	struct dmx_frontend        fe_hw;
92 	struct dmx_frontend        fe_mem;
93 	struct dvb_net             net;
94 
95 	/* Due to DRX-K - probably need changes */
96 	int (*gate_ctrl)(struct dvb_frontend *, int);
97 	struct semaphore      pll_mutex;
98 	bool			dont_attach_fe1;
99 	int			lna_gpio;
100 	struct i2c_client	*i2c_client_demod;
101 	struct i2c_client	*i2c_client_tuner;
102 	struct i2c_client	*i2c_client_sec;
103 };
104 
105 static inline void print_err_status(struct em28xx *dev,
106 				    int packet, int status)
107 {
108 	char *errmsg = "Unknown";
109 
110 	switch (status) {
111 	case -ENOENT:
112 		errmsg = "unlinked synchronuously";
113 		break;
114 	case -ECONNRESET:
115 		errmsg = "unlinked asynchronuously";
116 		break;
117 	case -ENOSR:
118 		errmsg = "Buffer error (overrun)";
119 		break;
120 	case -EPIPE:
121 		errmsg = "Stalled (device not responding)";
122 		break;
123 	case -EOVERFLOW:
124 		errmsg = "Babble (bad cable?)";
125 		break;
126 	case -EPROTO:
127 		errmsg = "Bit-stuff error (bad cable?)";
128 		break;
129 	case -EILSEQ:
130 		errmsg = "CRC/Timeout (could be anything)";
131 		break;
132 	case -ETIME:
133 		errmsg = "Device does not respond";
134 		break;
135 	}
136 	if (packet < 0) {
137 		dprintk(1, "URB status %d [%s].\n", status, errmsg);
138 	} else {
139 		dprintk(1, "URB packet %d, status %d [%s].\n",
140 			packet, status, errmsg);
141 	}
142 }
143 
144 static inline int em28xx_dvb_urb_data_copy(struct em28xx *dev, struct urb *urb)
145 {
146 	int xfer_bulk, num_packets, i;
147 
148 	if (!dev)
149 		return 0;
150 
151 	if (dev->disconnected)
152 		return 0;
153 
154 	if (urb->status < 0)
155 		print_err_status(dev, -1, urb->status);
156 
157 	xfer_bulk = usb_pipebulk(urb->pipe);
158 
159 	if (xfer_bulk) /* bulk */
160 		num_packets = 1;
161 	else /* isoc */
162 		num_packets = urb->number_of_packets;
163 
164 	for (i = 0; i < num_packets; i++) {
165 		if (xfer_bulk) {
166 			if (urb->status < 0) {
167 				print_err_status(dev, i, urb->status);
168 				if (urb->status != -EPROTO)
169 					continue;
170 			}
171 			if (!urb->actual_length)
172 				continue;
173 			dvb_dmx_swfilter(&dev->dvb->demux, urb->transfer_buffer,
174 					 urb->actual_length);
175 		} else {
176 			if (urb->iso_frame_desc[i].status < 0) {
177 				print_err_status(dev, i,
178 						 urb->iso_frame_desc[i].status);
179 				if (urb->iso_frame_desc[i].status != -EPROTO)
180 					continue;
181 			}
182 			if (!urb->iso_frame_desc[i].actual_length)
183 				continue;
184 			dvb_dmx_swfilter(&dev->dvb->demux,
185 					 urb->transfer_buffer +
186 					 urb->iso_frame_desc[i].offset,
187 					 urb->iso_frame_desc[i].actual_length);
188 		}
189 	}
190 
191 	return 0;
192 }
193 
194 static int em28xx_start_streaming(struct em28xx_dvb *dvb)
195 {
196 	int rc;
197 	struct em28xx_i2c_bus *i2c_bus = dvb->adapter.priv;
198 	struct em28xx *dev = i2c_bus->dev;
199 	int dvb_max_packet_size, packet_multiplier, dvb_alt;
200 
201 	if (dev->dvb_xfer_bulk) {
202 		if (!dev->dvb_ep_bulk)
203 			return -ENODEV;
204 		dvb_max_packet_size = 512; /* USB 2.0 spec */
205 		packet_multiplier = EM28XX_DVB_BULK_PACKET_MULTIPLIER;
206 		dvb_alt = 0;
207 	} else { /* isoc */
208 		if (!dev->dvb_ep_isoc)
209 			return -ENODEV;
210 		dvb_max_packet_size = dev->dvb_max_pkt_size_isoc;
211 		if (dvb_max_packet_size < 0)
212 			return dvb_max_packet_size;
213 		packet_multiplier = EM28XX_DVB_NUM_ISOC_PACKETS;
214 		dvb_alt = dev->dvb_alt_isoc;
215 	}
216 
217 	usb_set_interface(dev->udev, dev->ifnum, dvb_alt);
218 	rc = em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
219 	if (rc < 0)
220 		return rc;
221 
222 	dprintk(1, "Using %d buffers each with %d x %d bytes, alternate %d\n",
223 		EM28XX_DVB_NUM_BUFS,
224 		packet_multiplier,
225 		dvb_max_packet_size, dvb_alt);
226 
227 	return em28xx_init_usb_xfer(dev, EM28XX_DIGITAL_MODE,
228 				    dev->dvb_xfer_bulk,
229 				    EM28XX_DVB_NUM_BUFS,
230 				    dvb_max_packet_size,
231 				    packet_multiplier,
232 				    em28xx_dvb_urb_data_copy);
233 }
234 
235 static int em28xx_stop_streaming(struct em28xx_dvb *dvb)
236 {
237 	struct em28xx_i2c_bus *i2c_bus = dvb->adapter.priv;
238 	struct em28xx *dev = i2c_bus->dev;
239 
240 	em28xx_stop_urbs(dev);
241 
242 	return 0;
243 }
244 
245 static int em28xx_start_feed(struct dvb_demux_feed *feed)
246 {
247 	struct dvb_demux *demux  = feed->demux;
248 	struct em28xx_dvb *dvb = demux->priv;
249 	int rc, ret;
250 
251 	if (!demux->dmx.frontend)
252 		return -EINVAL;
253 
254 	mutex_lock(&dvb->lock);
255 	dvb->nfeeds++;
256 	rc = dvb->nfeeds;
257 
258 	if (dvb->nfeeds == 1) {
259 		ret = em28xx_start_streaming(dvb);
260 		if (ret < 0)
261 			rc = ret;
262 	}
263 
264 	mutex_unlock(&dvb->lock);
265 	return rc;
266 }
267 
268 static int em28xx_stop_feed(struct dvb_demux_feed *feed)
269 {
270 	struct dvb_demux *demux  = feed->demux;
271 	struct em28xx_dvb *dvb = demux->priv;
272 	int err = 0;
273 
274 	mutex_lock(&dvb->lock);
275 	dvb->nfeeds--;
276 
277 	if (0 == dvb->nfeeds)
278 		err = em28xx_stop_streaming(dvb);
279 
280 	mutex_unlock(&dvb->lock);
281 	return err;
282 }
283 
284 
285 /* ------------------------------------------------------------------ */
286 static int em28xx_dvb_bus_ctrl(struct dvb_frontend *fe, int acquire)
287 {
288 	struct em28xx_i2c_bus *i2c_bus = fe->dvb->priv;
289 	struct em28xx *dev = i2c_bus->dev;
290 
291 	if (acquire)
292 		return em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
293 	else
294 		return em28xx_set_mode(dev, EM28XX_SUSPEND);
295 }
296 
297 /* ------------------------------------------------------------------ */
298 
299 static struct lgdt330x_config em2880_lgdt3303_dev = {
300 	.demod_address = 0x0e,
301 	.demod_chip = LGDT3303,
302 };
303 
304 static struct lgdt3305_config em2870_lgdt3304_dev = {
305 	.i2c_addr           = 0x0e,
306 	.demod_chip         = LGDT3304,
307 	.spectral_inversion = 1,
308 	.deny_i2c_rptr      = 1,
309 	.mpeg_mode          = LGDT3305_MPEG_PARALLEL,
310 	.tpclk_edge         = LGDT3305_TPCLK_FALLING_EDGE,
311 	.tpvalid_polarity   = LGDT3305_TP_VALID_HIGH,
312 	.vsb_if_khz         = 3250,
313 	.qam_if_khz         = 4000,
314 };
315 
316 static struct lgdt3305_config em2874_lgdt3305_dev = {
317 	.i2c_addr           = 0x0e,
318 	.demod_chip         = LGDT3305,
319 	.spectral_inversion = 1,
320 	.deny_i2c_rptr      = 0,
321 	.mpeg_mode          = LGDT3305_MPEG_SERIAL,
322 	.tpclk_edge         = LGDT3305_TPCLK_FALLING_EDGE,
323 	.tpvalid_polarity   = LGDT3305_TP_VALID_HIGH,
324 	.vsb_if_khz         = 3250,
325 	.qam_if_khz         = 4000,
326 };
327 
328 static struct lgdt3305_config em2874_lgdt3305_nogate_dev = {
329 	.i2c_addr           = 0x0e,
330 	.demod_chip         = LGDT3305,
331 	.spectral_inversion = 1,
332 	.deny_i2c_rptr      = 1,
333 	.mpeg_mode          = LGDT3305_MPEG_SERIAL,
334 	.tpclk_edge         = LGDT3305_TPCLK_FALLING_EDGE,
335 	.tpvalid_polarity   = LGDT3305_TP_VALID_HIGH,
336 	.vsb_if_khz         = 3600,
337 	.qam_if_khz         = 3600,
338 };
339 
340 static struct s921_config sharp_isdbt = {
341 	.demod_address = 0x30 >> 1
342 };
343 
344 static struct zl10353_config em28xx_zl10353_with_xc3028 = {
345 	.demod_address = (0x1e >> 1),
346 	.no_tuner = 1,
347 	.parallel_ts = 1,
348 	.if2 = 45600,
349 };
350 
351 static struct s5h1409_config em28xx_s5h1409_with_xc3028 = {
352 	.demod_address = 0x32 >> 1,
353 	.output_mode   = S5H1409_PARALLEL_OUTPUT,
354 	.gpio          = S5H1409_GPIO_OFF,
355 	.inversion     = S5H1409_INVERSION_OFF,
356 	.status_mode   = S5H1409_DEMODLOCKING,
357 	.mpeg_timing   = S5H1409_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK
358 };
359 
360 static struct tda18271_std_map kworld_a340_std_map = {
361 	.atsc_6   = { .if_freq = 3250, .agc_mode = 3, .std = 0,
362 		      .if_lvl = 1, .rfagc_top = 0x37, },
363 	.qam_6    = { .if_freq = 4000, .agc_mode = 3, .std = 1,
364 		      .if_lvl = 1, .rfagc_top = 0x37, },
365 };
366 
367 static struct tda18271_config kworld_a340_config = {
368 	.std_map           = &kworld_a340_std_map,
369 };
370 
371 static struct tda18271_config kworld_ub435q_v2_config = {
372 	.std_map	= &kworld_a340_std_map,
373 	.gate		= TDA18271_GATE_DIGITAL,
374 };
375 
376 static struct tda18212_config kworld_ub435q_v3_config = {
377 	.if_atsc_vsb	= 3600,
378 	.if_atsc_qam	= 3600,
379 };
380 
381 static struct zl10353_config em28xx_zl10353_xc3028_no_i2c_gate = {
382 	.demod_address = (0x1e >> 1),
383 	.no_tuner = 1,
384 	.disable_i2c_gate_ctrl = 1,
385 	.parallel_ts = 1,
386 	.if2 = 45600,
387 };
388 
389 static struct drxd_config em28xx_drxd = {
390 	.demod_address = 0x70,
391 	.demod_revision = 0xa2,
392 	.pll_type = DRXD_PLL_NONE,
393 	.clock = 12000,
394 	.insert_rs_byte = 1,
395 	.IF = 42800000,
396 	.disable_i2c_gate_ctrl = 1,
397 };
398 
399 static struct drxk_config terratec_h5_drxk = {
400 	.adr = 0x29,
401 	.single_master = 1,
402 	.no_i2c_bridge = 1,
403 	.microcode_name = "dvb-usb-terratec-h5-drxk.fw",
404 	.qam_demod_parameter_count = 2,
405 };
406 
407 static struct drxk_config hauppauge_930c_drxk = {
408 	.adr = 0x29,
409 	.single_master = 1,
410 	.no_i2c_bridge = 1,
411 	.microcode_name = "dvb-usb-hauppauge-hvr930c-drxk.fw",
412 	.chunk_size = 56,
413 	.qam_demod_parameter_count = 2,
414 };
415 
416 static struct drxk_config terratec_htc_stick_drxk = {
417 	.adr = 0x29,
418 	.single_master = 1,
419 	.no_i2c_bridge = 1,
420 	.microcode_name = "dvb-usb-terratec-htc-stick-drxk.fw",
421 	.chunk_size = 54,
422 	.qam_demod_parameter_count = 2,
423 	/* Required for the antenna_gpio to disable LNA. */
424 	.antenna_dvbt = true,
425 	/* The windows driver uses the same. This will disable LNA. */
426 	.antenna_gpio = 0x6,
427 };
428 
429 static struct drxk_config maxmedia_ub425_tc_drxk = {
430 	.adr = 0x29,
431 	.single_master = 1,
432 	.no_i2c_bridge = 1,
433 	.microcode_name = "dvb-demod-drxk-01.fw",
434 	.chunk_size = 62,
435 	.qam_demod_parameter_count = 2,
436 };
437 
438 static struct drxk_config pctv_520e_drxk = {
439 	.adr = 0x29,
440 	.single_master = 1,
441 	.microcode_name = "dvb-demod-drxk-pctv.fw",
442 	.qam_demod_parameter_count = 2,
443 	.chunk_size = 58,
444 	.antenna_dvbt = true, /* disable LNA */
445 	.antenna_gpio = (1 << 2), /* disable LNA */
446 };
447 
448 static int drxk_gate_ctrl(struct dvb_frontend *fe, int enable)
449 {
450 	struct em28xx_dvb *dvb = fe->sec_priv;
451 	int status;
452 
453 	if (!dvb)
454 		return -EINVAL;
455 
456 	if (enable) {
457 		down(&dvb->pll_mutex);
458 		status = dvb->gate_ctrl(fe, 1);
459 	} else {
460 		status = dvb->gate_ctrl(fe, 0);
461 		up(&dvb->pll_mutex);
462 	}
463 	return status;
464 }
465 
466 static void hauppauge_hvr930c_init(struct em28xx *dev)
467 {
468 	int i;
469 
470 	struct em28xx_reg_seq hauppauge_hvr930c_init[] = {
471 		{EM2874_R80_GPIO_P0_CTRL,	0xff,	0xff,	0x65},
472 		{EM2874_R80_GPIO_P0_CTRL,	0xfb,	0xff,	0x32},
473 		{EM2874_R80_GPIO_P0_CTRL,	0xff,	0xff,	0xb8},
474 		{	-1,			-1,	-1,	-1},
475 	};
476 	struct em28xx_reg_seq hauppauge_hvr930c_end[] = {
477 		{EM2874_R80_GPIO_P0_CTRL,	0xef,	0xff,	0x01},
478 		{EM2874_R80_GPIO_P0_CTRL,	0xaf,	0xff,	0x65},
479 		{EM2874_R80_GPIO_P0_CTRL,	0xef,	0xff,	0x76},
480 		{EM2874_R80_GPIO_P0_CTRL,	0xef,	0xff,	0x01},
481 		{EM2874_R80_GPIO_P0_CTRL,	0xcf,	0xff,	0x0b},
482 		{EM2874_R80_GPIO_P0_CTRL,	0xef,	0xff,	0x40},
483 
484 		{EM2874_R80_GPIO_P0_CTRL,	0xcf,	0xff,	0x65},
485 		{EM2874_R80_GPIO_P0_CTRL,	0xef,	0xff,	0x65},
486 		{EM2874_R80_GPIO_P0_CTRL,	0xcf,	0xff,	0x0b},
487 		{EM2874_R80_GPIO_P0_CTRL,	0xef,	0xff,	0x65},
488 
489 		{	-1,			-1,	-1,	-1},
490 	};
491 
492 	struct {
493 		unsigned char r[4];
494 		int len;
495 	} regs[] = {
496 		{{ 0x06, 0x02, 0x00, 0x31 }, 4},
497 		{{ 0x01, 0x02 }, 2},
498 		{{ 0x01, 0x02, 0x00, 0xc6 }, 4},
499 		{{ 0x01, 0x00 }, 2},
500 		{{ 0x01, 0x00, 0xff, 0xaf }, 4},
501 		{{ 0x01, 0x00, 0x03, 0xa0 }, 4},
502 		{{ 0x01, 0x00 }, 2},
503 		{{ 0x01, 0x00, 0x73, 0xaf }, 4},
504 		{{ 0x04, 0x00 }, 2},
505 		{{ 0x00, 0x04 }, 2},
506 		{{ 0x00, 0x04, 0x00, 0x0a }, 4},
507 		{{ 0x04, 0x14 }, 2},
508 		{{ 0x04, 0x14, 0x00, 0x00 }, 4},
509 	};
510 
511 	em28xx_gpio_set(dev, hauppauge_hvr930c_init);
512 	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x40);
513 	msleep(10);
514 	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x44);
515 	msleep(10);
516 
517 	dev->i2c_client[dev->def_i2c_bus].addr = 0x82 >> 1;
518 
519 	for (i = 0; i < ARRAY_SIZE(regs); i++)
520 		i2c_master_send(&dev->i2c_client[dev->def_i2c_bus], regs[i].r, regs[i].len);
521 	em28xx_gpio_set(dev, hauppauge_hvr930c_end);
522 
523 	msleep(100);
524 
525 	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x44);
526 	msleep(30);
527 
528 	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x45);
529 	msleep(10);
530 
531 }
532 
533 static void terratec_h5_init(struct em28xx *dev)
534 {
535 	int i;
536 	struct em28xx_reg_seq terratec_h5_init[] = {
537 		{EM2820_R08_GPIO_CTRL,		0xff,	0xff,	10},
538 		{EM2874_R80_GPIO_P0_CTRL,	0xf6,	0xff,	100},
539 		{EM2874_R80_GPIO_P0_CTRL,	0xf2,	0xff,	50},
540 		{EM2874_R80_GPIO_P0_CTRL,	0xf6,	0xff,	100},
541 		{	-1,			-1,	-1,	-1},
542 	};
543 	struct em28xx_reg_seq terratec_h5_end[] = {
544 		{EM2874_R80_GPIO_P0_CTRL,	0xe6,	0xff,	100},
545 		{EM2874_R80_GPIO_P0_CTRL,	0xa6,	0xff,	50},
546 		{EM2874_R80_GPIO_P0_CTRL,	0xe6,	0xff,	100},
547 		{	-1,			-1,	-1,	-1},
548 	};
549 	struct {
550 		unsigned char r[4];
551 		int len;
552 	} regs[] = {
553 		{{ 0x06, 0x02, 0x00, 0x31 }, 4},
554 		{{ 0x01, 0x02 }, 2},
555 		{{ 0x01, 0x02, 0x00, 0xc6 }, 4},
556 		{{ 0x01, 0x00 }, 2},
557 		{{ 0x01, 0x00, 0xff, 0xaf }, 4},
558 		{{ 0x01, 0x00, 0x03, 0xa0 }, 4},
559 		{{ 0x01, 0x00 }, 2},
560 		{{ 0x01, 0x00, 0x73, 0xaf }, 4},
561 		{{ 0x04, 0x00 }, 2},
562 		{{ 0x00, 0x04 }, 2},
563 		{{ 0x00, 0x04, 0x00, 0x0a }, 4},
564 		{{ 0x04, 0x14 }, 2},
565 		{{ 0x04, 0x14, 0x00, 0x00 }, 4},
566 	};
567 
568 	em28xx_gpio_set(dev, terratec_h5_init);
569 	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x40);
570 	msleep(10);
571 	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x45);
572 	msleep(10);
573 
574 	dev->i2c_client[dev->def_i2c_bus].addr = 0x82 >> 1;
575 
576 	for (i = 0; i < ARRAY_SIZE(regs); i++)
577 		i2c_master_send(&dev->i2c_client[dev->def_i2c_bus], regs[i].r, regs[i].len);
578 	em28xx_gpio_set(dev, terratec_h5_end);
579 };
580 
581 static void terratec_htc_stick_init(struct em28xx *dev)
582 {
583 	int i;
584 
585 	/*
586 	 * GPIO configuration:
587 	 * 0xff: unknown (does not affect DVB-T).
588 	 * 0xf6: DRX-K (demodulator).
589 	 * 0xe6: unknown (does not affect DVB-T).
590 	 * 0xb6: unknown (does not affect DVB-T).
591 	 */
592 	struct em28xx_reg_seq terratec_htc_stick_init[] = {
593 		{EM2820_R08_GPIO_CTRL,		0xff,	0xff,	10},
594 		{EM2874_R80_GPIO_P0_CTRL,	0xf6,	0xff,	100},
595 		{EM2874_R80_GPIO_P0_CTRL,	0xe6,	0xff,	50},
596 		{EM2874_R80_GPIO_P0_CTRL,	0xf6,	0xff,	100},
597 		{	-1,			-1,	-1,	-1},
598 	};
599 	struct em28xx_reg_seq terratec_htc_stick_end[] = {
600 		{EM2874_R80_GPIO_P0_CTRL,	0xb6,	0xff,	100},
601 		{EM2874_R80_GPIO_P0_CTRL,	0xf6,	0xff,	50},
602 		{	-1,			-1,	-1,	-1},
603 	};
604 
605 	/*
606 	 * Init the analog decoder (not yet supported), but
607 	 * it's probably still a good idea.
608 	 */
609 	struct {
610 		unsigned char r[4];
611 		int len;
612 	} regs[] = {
613 		{{ 0x06, 0x02, 0x00, 0x31 }, 4},
614 		{{ 0x01, 0x02 }, 2},
615 		{{ 0x01, 0x02, 0x00, 0xc6 }, 4},
616 		{{ 0x01, 0x00 }, 2},
617 		{{ 0x01, 0x00, 0xff, 0xaf }, 4},
618 	};
619 
620 	em28xx_gpio_set(dev, terratec_htc_stick_init);
621 
622 	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x40);
623 	msleep(10);
624 	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x44);
625 	msleep(10);
626 
627 	dev->i2c_client[dev->def_i2c_bus].addr = 0x82 >> 1;
628 
629 	for (i = 0; i < ARRAY_SIZE(regs); i++)
630 		i2c_master_send(&dev->i2c_client[dev->def_i2c_bus], regs[i].r, regs[i].len);
631 
632 	em28xx_gpio_set(dev, terratec_htc_stick_end);
633 };
634 
635 static void terratec_htc_usb_xs_init(struct em28xx *dev)
636 {
637 	int i;
638 
639 	struct em28xx_reg_seq terratec_htc_usb_xs_init[] = {
640 		{EM2820_R08_GPIO_CTRL,		0xff,	0xff,	10},
641 		{EM2874_R80_GPIO_P0_CTRL,	0xb2,	0xff,	100},
642 		{EM2874_R80_GPIO_P0_CTRL,	0xb2,	0xff,	50},
643 		{EM2874_R80_GPIO_P0_CTRL,	0xb6,	0xff,	100},
644 		{	-1,			-1,	-1,	-1},
645 	};
646 	struct em28xx_reg_seq terratec_htc_usb_xs_end[] = {
647 		{EM2874_R80_GPIO_P0_CTRL,	0xa6,	0xff,	100},
648 		{EM2874_R80_GPIO_P0_CTRL,	0xa6,	0xff,	50},
649 		{EM2874_R80_GPIO_P0_CTRL,	0xe6,	0xff,	100},
650 		{	-1,			-1,	-1,	-1},
651 	};
652 
653 	/*
654 	 * Init the analog decoder (not yet supported), but
655 	 * it's probably still a good idea.
656 	 */
657 	struct {
658 		unsigned char r[4];
659 		int len;
660 	} regs[] = {
661 		{{ 0x06, 0x02, 0x00, 0x31 }, 4},
662 		{{ 0x01, 0x02 }, 2},
663 		{{ 0x01, 0x02, 0x00, 0xc6 }, 4},
664 		{{ 0x01, 0x00 }, 2},
665 		{{ 0x01, 0x00, 0xff, 0xaf }, 4},
666 		{{ 0x01, 0x00, 0x03, 0xa0 }, 4},
667 		{{ 0x01, 0x00 }, 2},
668 		{{ 0x01, 0x00, 0x73, 0xaf }, 4},
669 		{{ 0x04, 0x00 }, 2},
670 		{{ 0x00, 0x04 }, 2},
671 		{{ 0x00, 0x04, 0x00, 0x0a }, 4},
672 		{{ 0x04, 0x14 }, 2},
673 		{{ 0x04, 0x14, 0x00, 0x00 }, 4},
674 	};
675 
676 	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x40);
677 
678 	em28xx_gpio_set(dev, terratec_htc_usb_xs_init);
679 
680 	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x40);
681 	msleep(10);
682 	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x44);
683 	msleep(10);
684 
685 	dev->i2c_client[dev->def_i2c_bus].addr = 0x82 >> 1;
686 
687 	for (i = 0; i < ARRAY_SIZE(regs); i++)
688 		i2c_master_send(&dev->i2c_client[dev->def_i2c_bus], regs[i].r, regs[i].len);
689 
690 	em28xx_gpio_set(dev, terratec_htc_usb_xs_end);
691 };
692 
693 static void pctv_520e_init(struct em28xx *dev)
694 {
695 	/*
696 	 * Init AVF4910B analog decoder. Looks like I2C traffic to
697 	 * digital demodulator and tuner are routed via AVF4910B.
698 	 */
699 	int i;
700 	struct {
701 		unsigned char r[4];
702 		int len;
703 	} regs[] = {
704 		{{ 0x06, 0x02, 0x00, 0x31 }, 4},
705 		{{ 0x01, 0x02 }, 2},
706 		{{ 0x01, 0x02, 0x00, 0xc6 }, 4},
707 		{{ 0x01, 0x00 }, 2},
708 		{{ 0x01, 0x00, 0xff, 0xaf }, 4},
709 		{{ 0x01, 0x00, 0x03, 0xa0 }, 4},
710 		{{ 0x01, 0x00 }, 2},
711 		{{ 0x01, 0x00, 0x73, 0xaf }, 4},
712 	};
713 
714 	dev->i2c_client[dev->def_i2c_bus].addr = 0x82 >> 1; /* 0x41 */
715 
716 	for (i = 0; i < ARRAY_SIZE(regs); i++)
717 		i2c_master_send(&dev->i2c_client[dev->def_i2c_bus], regs[i].r, regs[i].len);
718 };
719 
720 static int em28xx_pctv_290e_set_lna(struct dvb_frontend *fe)
721 {
722 	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
723 	struct em28xx_i2c_bus *i2c_bus = fe->dvb->priv;
724 	struct em28xx *dev = i2c_bus->dev;
725 #ifdef CONFIG_GPIOLIB
726 	struct em28xx_dvb *dvb = dev->dvb;
727 	int ret;
728 	unsigned long flags;
729 
730 	if (c->lna == 1)
731 		flags = GPIOF_OUT_INIT_HIGH; /* enable LNA */
732 	else
733 		flags = GPIOF_OUT_INIT_LOW; /* disable LNA */
734 
735 	ret = gpio_request_one(dvb->lna_gpio, flags, NULL);
736 	if (ret)
737 		em28xx_errdev("gpio request failed %d\n", ret);
738 	else
739 		gpio_free(dvb->lna_gpio);
740 
741 	return ret;
742 #else
743 	dev_warn(&dev->udev->dev, "%s: LNA control is disabled (lna=%u)\n",
744 		 KBUILD_MODNAME, c->lna);
745 	return 0;
746 #endif
747 }
748 
749 static int em28xx_pctv_292e_set_lna(struct dvb_frontend *fe)
750 {
751 	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
752 	struct em28xx_i2c_bus *i2c_bus = fe->dvb->priv;
753 	struct em28xx *dev = i2c_bus->dev;
754 	u8 lna;
755 
756 	if (c->lna == 1)
757 		lna = 0x01;
758 	else
759 		lna = 0x00;
760 
761 	return em28xx_write_reg_bits(dev, EM2874_R80_GPIO_P0_CTRL, lna, 0x01);
762 }
763 
764 static int em28xx_mt352_terratec_xs_init(struct dvb_frontend *fe)
765 {
766 	/* Values extracted from a USB trace of the Terratec Windows driver */
767 	static u8 clock_config[]   = { CLOCK_CTL,  0x38, 0x2c };
768 	static u8 reset[]          = { RESET,      0x80 };
769 	static u8 adc_ctl_1_cfg[]  = { ADC_CTL_1,  0x40 };
770 	static u8 agc_cfg[]        = { AGC_TARGET, 0x28, 0xa0 };
771 	static u8 input_freq_cfg[] = { INPUT_FREQ_1, 0x31, 0xb8 };
772 	static u8 rs_err_cfg[]     = { RS_ERR_PER_1, 0x00, 0x4d };
773 	static u8 capt_range_cfg[] = { CAPT_RANGE, 0x32 };
774 	static u8 trl_nom_cfg[]    = { TRL_NOMINAL_RATE_1, 0x64, 0x00 };
775 	static u8 tps_given_cfg[]  = { TPS_GIVEN_1, 0x40, 0x80, 0x50 };
776 	static u8 tuner_go[]       = { TUNER_GO, 0x01};
777 
778 	mt352_write(fe, clock_config,   sizeof(clock_config));
779 	udelay(200);
780 	mt352_write(fe, reset,          sizeof(reset));
781 	mt352_write(fe, adc_ctl_1_cfg,  sizeof(adc_ctl_1_cfg));
782 	mt352_write(fe, agc_cfg,        sizeof(agc_cfg));
783 	mt352_write(fe, input_freq_cfg, sizeof(input_freq_cfg));
784 	mt352_write(fe, rs_err_cfg,     sizeof(rs_err_cfg));
785 	mt352_write(fe, capt_range_cfg, sizeof(capt_range_cfg));
786 	mt352_write(fe, trl_nom_cfg,    sizeof(trl_nom_cfg));
787 	mt352_write(fe, tps_given_cfg,  sizeof(tps_given_cfg));
788 	mt352_write(fe, tuner_go,       sizeof(tuner_go));
789 	return 0;
790 }
791 
792 static void px_bcud_init(struct em28xx *dev)
793 {
794 	int i;
795 	struct {
796 		unsigned char r[4];
797 		int len;
798 	} regs1[] = {
799 		{{ 0x0e, 0x77 }, 2},
800 		{{ 0x0f, 0x77 }, 2},
801 		{{ 0x03, 0x90 }, 2},
802 	}, regs2[] = {
803 		{{ 0x07, 0x01 }, 2},
804 		{{ 0x08, 0x10 }, 2},
805 		{{ 0x13, 0x00 }, 2},
806 		{{ 0x17, 0x00 }, 2},
807 		{{ 0x03, 0x01 }, 2},
808 		{{ 0x10, 0xb1 }, 2},
809 		{{ 0x11, 0x40 }, 2},
810 		{{ 0x85, 0x7a }, 2},
811 		{{ 0x87, 0x04 }, 2},
812 	};
813 	static struct em28xx_reg_seq gpio[] = {
814 		{EM28XX_R06_I2C_CLK,		0x40,	0xff,	300},
815 		{EM2874_R80_GPIO_P0_CTRL,	0xfd,	0xff,	60},
816 		{EM28XX_R15_RGAIN,		0x20,	0xff,	0},
817 		{EM28XX_R16_GGAIN,		0x20,	0xff,	0},
818 		{EM28XX_R17_BGAIN,		0x20,	0xff,	0},
819 		{EM28XX_R18_ROFFSET,		0x00,	0xff,	0},
820 		{EM28XX_R19_GOFFSET,		0x00,	0xff,	0},
821 		{EM28XX_R1A_BOFFSET,		0x00,	0xff,	0},
822 		{EM28XX_R23_UOFFSET,		0x00,	0xff,	0},
823 		{EM28XX_R24_VOFFSET,		0x00,	0xff,	0},
824 		{EM28XX_R26_COMPR,		0x00,	0xff,	0},
825 		{0x13,				0x08,	0xff,	0},
826 		{EM28XX_R12_VINENABLE,		0x27,	0xff,	0},
827 		{EM28XX_R0C_USBSUSP,		0x10,	0xff,	0},
828 		{EM28XX_R27_OUTFMT,		0x00,	0xff,	0},
829 		{EM28XX_R10_VINMODE,		0x00,	0xff,	0},
830 		{EM28XX_R11_VINCTRL,		0x11,	0xff,	0},
831 		{EM2874_R50_IR_CONFIG,		0x01,	0xff,	0},
832 		{EM2874_R5F_TS_ENABLE,		0x80,	0xff,	0},
833 		{EM28XX_R06_I2C_CLK,		0x46,	0xff,	0},
834 	};
835 	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x46);
836 	/* sleeping ISDB-T */
837 	dev->dvb->i2c_client_demod->addr = 0x14;
838 	for (i = 0; i < ARRAY_SIZE(regs1); i++)
839 		i2c_master_send(dev->dvb->i2c_client_demod, regs1[i].r,
840 				regs1[i].len);
841 	/* sleeping ISDB-S */
842 	dev->dvb->i2c_client_demod->addr = 0x15;
843 	for (i = 0; i < ARRAY_SIZE(regs2); i++)
844 		i2c_master_send(dev->dvb->i2c_client_demod, regs2[i].r,
845 				regs2[i].len);
846 	for (i = 0; i < ARRAY_SIZE(gpio); i++) {
847 		em28xx_write_reg_bits(dev, gpio[i].reg, gpio[i].val,
848 				      gpio[i].mask);
849 		if (gpio[i].sleep > 0)
850 			msleep(gpio[i].sleep);
851 	}
852 };
853 
854 static struct mt352_config terratec_xs_mt352_cfg = {
855 	.demod_address = (0x1e >> 1),
856 	.no_tuner = 1,
857 	.if2 = 45600,
858 	.demod_init = em28xx_mt352_terratec_xs_init,
859 };
860 
861 static struct tda10023_config em28xx_tda10023_config = {
862 	.demod_address = 0x0c,
863 	.invert = 1,
864 };
865 
866 static struct cxd2820r_config em28xx_cxd2820r_config = {
867 	.i2c_address = (0xd8 >> 1),
868 	.ts_mode = CXD2820R_TS_SERIAL,
869 };
870 
871 static struct tda18271_config em28xx_cxd2820r_tda18271_config = {
872 	.output_opt = TDA18271_OUTPUT_LT_OFF,
873 	.gate = TDA18271_GATE_DIGITAL,
874 };
875 
876 static struct zl10353_config em28xx_zl10353_no_i2c_gate_dev = {
877 	.demod_address = (0x1e >> 1),
878 	.disable_i2c_gate_ctrl = 1,
879 	.no_tuner = 1,
880 	.parallel_ts = 1,
881 };
882 
883 static struct mt2060_config em28xx_mt2060_config = {
884 	.i2c_address = 0x60,
885 };
886 
887 static struct qt1010_config em28xx_qt1010_config = {
888 	.i2c_address = 0x62
889 };
890 
891 static const struct mb86a20s_config c3tech_duo_mb86a20s_config = {
892 	.demod_address = 0x10,
893 	.is_serial = true,
894 };
895 
896 static struct tda18271_std_map mb86a20s_tda18271_config = {
897 	.dvbt_6   = { .if_freq = 4000, .agc_mode = 3, .std = 4,
898 		      .if_lvl = 1, .rfagc_top = 0x37, },
899 };
900 
901 static struct tda18271_config c3tech_duo_tda18271_config = {
902 	.std_map = &mb86a20s_tda18271_config,
903 	.gate    = TDA18271_GATE_DIGITAL,
904 	.small_i2c = TDA18271_03_BYTE_CHUNK_INIT,
905 };
906 
907 static struct tda18271_std_map drx_j_std_map = {
908 	.atsc_6   = { .if_freq = 5000, .agc_mode = 3, .std = 0, .if_lvl = 1,
909 		      .rfagc_top = 0x37, },
910 	.qam_6    = { .if_freq = 5380, .agc_mode = 3, .std = 3, .if_lvl = 1,
911 		      .rfagc_top = 0x37, },
912 };
913 
914 static struct tda18271_config pinnacle_80e_dvb_config = {
915 	.std_map = &drx_j_std_map,
916 	.gate    = TDA18271_GATE_DIGITAL,
917 	.role    = TDA18271_MASTER,
918 };
919 
920 /* ------------------------------------------------------------------ */
921 
922 static int em28xx_attach_xc3028(u8 addr, struct em28xx *dev)
923 {
924 	struct dvb_frontend *fe;
925 	struct xc2028_config cfg;
926 	struct xc2028_ctrl ctl;
927 
928 	memset(&cfg, 0, sizeof(cfg));
929 	cfg.i2c_adap  = &dev->i2c_adap[dev->def_i2c_bus];
930 	cfg.i2c_addr  = addr;
931 
932 	memset(&ctl, 0, sizeof(ctl));
933 	em28xx_setup_xc3028(dev, &ctl);
934 	cfg.ctrl  = &ctl;
935 
936 	if (!dev->dvb->fe[0]) {
937 		em28xx_errdev("/2: dvb frontend not attached. "
938 				"Can't attach xc3028\n");
939 		return -EINVAL;
940 	}
941 
942 	fe = dvb_attach(xc2028_attach, dev->dvb->fe[0], &cfg);
943 	if (!fe) {
944 		em28xx_errdev("/2: xc3028 attach failed\n");
945 		dvb_frontend_detach(dev->dvb->fe[0]);
946 		dev->dvb->fe[0] = NULL;
947 		return -EINVAL;
948 	}
949 
950 	em28xx_info("%s/2: xc3028 attached\n", dev->name);
951 
952 	return 0;
953 }
954 
955 /* ------------------------------------------------------------------ */
956 
957 static int em28xx_register_dvb(struct em28xx_dvb *dvb, struct module *module,
958 			       struct em28xx *dev, struct device *device)
959 {
960 	int result;
961 	bool create_rf_connector = false;
962 
963 	mutex_init(&dvb->lock);
964 
965 	/* register adapter */
966 	result = dvb_register_adapter(&dvb->adapter, dev->name, module, device,
967 				      adapter_nr);
968 	if (result < 0) {
969 		printk(KERN_WARNING "%s: dvb_register_adapter failed (errno = %d)\n",
970 		       dev->name, result);
971 		goto fail_adapter;
972 	}
973 #ifdef CONFIG_MEDIA_CONTROLLER_DVB
974 	dvb->adapter.mdev = dev->media_dev;
975 #endif
976 
977 	/* Ensure all frontends negotiate bus access */
978 	dvb->fe[0]->ops.ts_bus_ctrl = em28xx_dvb_bus_ctrl;
979 	if (dvb->fe[1])
980 		dvb->fe[1]->ops.ts_bus_ctrl = em28xx_dvb_bus_ctrl;
981 
982 	dvb->adapter.priv = &dev->i2c_bus[dev->def_i2c_bus];
983 
984 	/* register frontend */
985 	result = dvb_register_frontend(&dvb->adapter, dvb->fe[0]);
986 	if (result < 0) {
987 		printk(KERN_WARNING "%s: dvb_register_frontend failed (errno = %d)\n",
988 		       dev->name, result);
989 		goto fail_frontend0;
990 	}
991 
992 	/* register 2nd frontend */
993 	if (dvb->fe[1]) {
994 		result = dvb_register_frontend(&dvb->adapter, dvb->fe[1]);
995 		if (result < 0) {
996 			printk(KERN_WARNING "%s: 2nd dvb_register_frontend failed (errno = %d)\n",
997 			       dev->name, result);
998 			goto fail_frontend1;
999 		}
1000 	}
1001 
1002 	/* register demux stuff */
1003 	dvb->demux.dmx.capabilities =
1004 		DMX_TS_FILTERING | DMX_SECTION_FILTERING |
1005 		DMX_MEMORY_BASED_FILTERING;
1006 	dvb->demux.priv       = dvb;
1007 	dvb->demux.filternum  = 256;
1008 	dvb->demux.feednum    = 256;
1009 	dvb->demux.start_feed = em28xx_start_feed;
1010 	dvb->demux.stop_feed  = em28xx_stop_feed;
1011 
1012 	result = dvb_dmx_init(&dvb->demux);
1013 	if (result < 0) {
1014 		printk(KERN_WARNING "%s: dvb_dmx_init failed (errno = %d)\n",
1015 		       dev->name, result);
1016 		goto fail_dmx;
1017 	}
1018 
1019 	dvb->dmxdev.filternum    = 256;
1020 	dvb->dmxdev.demux        = &dvb->demux.dmx;
1021 	dvb->dmxdev.capabilities = 0;
1022 	result = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter);
1023 	if (result < 0) {
1024 		printk(KERN_WARNING "%s: dvb_dmxdev_init failed (errno = %d)\n",
1025 		       dev->name, result);
1026 		goto fail_dmxdev;
1027 	}
1028 
1029 	dvb->fe_hw.source = DMX_FRONTEND_0;
1030 	result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_hw);
1031 	if (result < 0) {
1032 		printk(KERN_WARNING "%s: add_frontend failed (DMX_FRONTEND_0, errno = %d)\n",
1033 		       dev->name, result);
1034 		goto fail_fe_hw;
1035 	}
1036 
1037 	dvb->fe_mem.source = DMX_MEMORY_FE;
1038 	result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_mem);
1039 	if (result < 0) {
1040 		printk(KERN_WARNING "%s: add_frontend failed (DMX_MEMORY_FE, errno = %d)\n",
1041 		       dev->name, result);
1042 		goto fail_fe_mem;
1043 	}
1044 
1045 	result = dvb->demux.dmx.connect_frontend(&dvb->demux.dmx, &dvb->fe_hw);
1046 	if (result < 0) {
1047 		printk(KERN_WARNING "%s: connect_frontend failed (errno = %d)\n",
1048 		       dev->name, result);
1049 		goto fail_fe_conn;
1050 	}
1051 
1052 	/* register network adapter */
1053 	dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx);
1054 
1055 	/* If the analog part won't create RF connectors, DVB will do it */
1056 	if (!dev->has_video || (dev->tuner_type == TUNER_ABSENT))
1057 		create_rf_connector = true;
1058 
1059 	result = dvb_create_media_graph(&dvb->adapter, create_rf_connector);
1060 	if (result < 0)
1061 		goto fail_create_graph;
1062 
1063 	return 0;
1064 
1065 fail_create_graph:
1066 	dvb_net_release(&dvb->net);
1067 fail_fe_conn:
1068 	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
1069 fail_fe_mem:
1070 	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
1071 fail_fe_hw:
1072 	dvb_dmxdev_release(&dvb->dmxdev);
1073 fail_dmxdev:
1074 	dvb_dmx_release(&dvb->demux);
1075 fail_dmx:
1076 	if (dvb->fe[1])
1077 		dvb_unregister_frontend(dvb->fe[1]);
1078 	dvb_unregister_frontend(dvb->fe[0]);
1079 fail_frontend1:
1080 	if (dvb->fe[1])
1081 		dvb_frontend_detach(dvb->fe[1]);
1082 fail_frontend0:
1083 	dvb_frontend_detach(dvb->fe[0]);
1084 	dvb_unregister_adapter(&dvb->adapter);
1085 fail_adapter:
1086 	return result;
1087 }
1088 
1089 static void em28xx_unregister_dvb(struct em28xx_dvb *dvb)
1090 {
1091 	dvb_net_release(&dvb->net);
1092 	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
1093 	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
1094 	dvb_dmxdev_release(&dvb->dmxdev);
1095 	dvb_dmx_release(&dvb->demux);
1096 	if (dvb->fe[1])
1097 		dvb_unregister_frontend(dvb->fe[1]);
1098 	dvb_unregister_frontend(dvb->fe[0]);
1099 	if (dvb->fe[1] && !dvb->dont_attach_fe1)
1100 		dvb_frontend_detach(dvb->fe[1]);
1101 	dvb_frontend_detach(dvb->fe[0]);
1102 	dvb_unregister_adapter(&dvb->adapter);
1103 }
1104 
1105 static int em28xx_dvb_init(struct em28xx *dev)
1106 {
1107 	int result = 0;
1108 	struct em28xx_dvb *dvb;
1109 
1110 	if (dev->is_audio_only) {
1111 		/* Shouldn't initialize IR for this interface */
1112 		return 0;
1113 	}
1114 
1115 	if (!dev->board.has_dvb) {
1116 		/* This device does not support the extension */
1117 		return 0;
1118 	}
1119 
1120 	em28xx_info("Binding DVB extension\n");
1121 
1122 	dvb = kzalloc(sizeof(struct em28xx_dvb), GFP_KERNEL);
1123 	if (dvb == NULL) {
1124 		em28xx_info("em28xx_dvb: memory allocation failed\n");
1125 		return -ENOMEM;
1126 	}
1127 	dev->dvb = dvb;
1128 	dvb->fe[0] = dvb->fe[1] = NULL;
1129 
1130 	/* pre-allocate DVB usb transfer buffers */
1131 	if (dev->dvb_xfer_bulk) {
1132 		result = em28xx_alloc_urbs(dev, EM28XX_DIGITAL_MODE,
1133 					   dev->dvb_xfer_bulk,
1134 					   EM28XX_DVB_NUM_BUFS,
1135 					   512,
1136 					   EM28XX_DVB_BULK_PACKET_MULTIPLIER);
1137 	} else {
1138 		result = em28xx_alloc_urbs(dev, EM28XX_DIGITAL_MODE,
1139 					   dev->dvb_xfer_bulk,
1140 					   EM28XX_DVB_NUM_BUFS,
1141 					   dev->dvb_max_pkt_size_isoc,
1142 					   EM28XX_DVB_NUM_ISOC_PACKETS);
1143 	}
1144 	if (result) {
1145 		em28xx_errdev("em28xx_dvb: failed to pre-allocate USB transfer buffers for DVB.\n");
1146 		kfree(dvb);
1147 		dev->dvb = NULL;
1148 		return result;
1149 	}
1150 
1151 	mutex_lock(&dev->lock);
1152 	em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
1153 	/* init frontend */
1154 	switch (dev->model) {
1155 	case EM2874_BOARD_LEADERSHIP_ISDBT:
1156 		dvb->fe[0] = dvb_attach(s921_attach,
1157 				&sharp_isdbt, &dev->i2c_adap[dev->def_i2c_bus]);
1158 
1159 		if (!dvb->fe[0]) {
1160 			result = -EINVAL;
1161 			goto out_free;
1162 		}
1163 
1164 		break;
1165 	case EM2883_BOARD_HAUPPAUGE_WINTV_HVR_850:
1166 	case EM2883_BOARD_HAUPPAUGE_WINTV_HVR_950:
1167 	case EM2880_BOARD_PINNACLE_PCTV_HD_PRO:
1168 	case EM2880_BOARD_AMD_ATI_TV_WONDER_HD_600:
1169 		dvb->fe[0] = dvb_attach(lgdt330x_attach,
1170 					   &em2880_lgdt3303_dev,
1171 					   &dev->i2c_adap[dev->def_i2c_bus]);
1172 		if (em28xx_attach_xc3028(0x61, dev) < 0) {
1173 			result = -EINVAL;
1174 			goto out_free;
1175 		}
1176 		break;
1177 	case EM2880_BOARD_KWORLD_DVB_310U:
1178 		dvb->fe[0] = dvb_attach(zl10353_attach,
1179 					   &em28xx_zl10353_with_xc3028,
1180 					   &dev->i2c_adap[dev->def_i2c_bus]);
1181 		if (em28xx_attach_xc3028(0x61, dev) < 0) {
1182 			result = -EINVAL;
1183 			goto out_free;
1184 		}
1185 		break;
1186 	case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900:
1187 	case EM2882_BOARD_TERRATEC_HYBRID_XS:
1188 	case EM2880_BOARD_EMPIRE_DUAL_TV:
1189 		dvb->fe[0] = dvb_attach(zl10353_attach,
1190 					   &em28xx_zl10353_xc3028_no_i2c_gate,
1191 					   &dev->i2c_adap[dev->def_i2c_bus]);
1192 		if (em28xx_attach_xc3028(0x61, dev) < 0) {
1193 			result = -EINVAL;
1194 			goto out_free;
1195 		}
1196 		break;
1197 	case EM2880_BOARD_TERRATEC_HYBRID_XS:
1198 	case EM2880_BOARD_TERRATEC_HYBRID_XS_FR:
1199 	case EM2881_BOARD_PINNACLE_HYBRID_PRO:
1200 	case EM2882_BOARD_DIKOM_DK300:
1201 	case EM2882_BOARD_KWORLD_VS_DVBT:
1202 		dvb->fe[0] = dvb_attach(zl10353_attach,
1203 					   &em28xx_zl10353_xc3028_no_i2c_gate,
1204 					   &dev->i2c_adap[dev->def_i2c_bus]);
1205 		if (dvb->fe[0] == NULL) {
1206 			/* This board could have either a zl10353 or a mt352.
1207 			   If the chip id isn't for zl10353, try mt352 */
1208 			dvb->fe[0] = dvb_attach(mt352_attach,
1209 						   &terratec_xs_mt352_cfg,
1210 						   &dev->i2c_adap[dev->def_i2c_bus]);
1211 		}
1212 
1213 		if (em28xx_attach_xc3028(0x61, dev) < 0) {
1214 			result = -EINVAL;
1215 			goto out_free;
1216 		}
1217 		break;
1218 	case EM2870_BOARD_TERRATEC_XS_MT2060:
1219 		dvb->fe[0] = dvb_attach(zl10353_attach,
1220 						&em28xx_zl10353_no_i2c_gate_dev,
1221 						&dev->i2c_adap[dev->def_i2c_bus]);
1222 		if (dvb->fe[0] != NULL) {
1223 			dvb_attach(mt2060_attach, dvb->fe[0],
1224 					&dev->i2c_adap[dev->def_i2c_bus],
1225 					&em28xx_mt2060_config, 1220);
1226 		}
1227 		break;
1228 	case EM2870_BOARD_KWORLD_355U:
1229 		dvb->fe[0] = dvb_attach(zl10353_attach,
1230 					   &em28xx_zl10353_no_i2c_gate_dev,
1231 					   &dev->i2c_adap[dev->def_i2c_bus]);
1232 		if (dvb->fe[0] != NULL)
1233 			dvb_attach(qt1010_attach, dvb->fe[0],
1234 				   &dev->i2c_adap[dev->def_i2c_bus], &em28xx_qt1010_config);
1235 		break;
1236 	case EM2883_BOARD_KWORLD_HYBRID_330U:
1237 	case EM2882_BOARD_EVGA_INDTUBE:
1238 		dvb->fe[0] = dvb_attach(s5h1409_attach,
1239 					   &em28xx_s5h1409_with_xc3028,
1240 					   &dev->i2c_adap[dev->def_i2c_bus]);
1241 		if (em28xx_attach_xc3028(0x61, dev) < 0) {
1242 			result = -EINVAL;
1243 			goto out_free;
1244 		}
1245 		break;
1246 	case EM2882_BOARD_KWORLD_ATSC_315U:
1247 		dvb->fe[0] = dvb_attach(lgdt330x_attach,
1248 					   &em2880_lgdt3303_dev,
1249 					   &dev->i2c_adap[dev->def_i2c_bus]);
1250 		if (dvb->fe[0] != NULL) {
1251 			if (!dvb_attach(simple_tuner_attach, dvb->fe[0],
1252 					&dev->i2c_adap[dev->def_i2c_bus],
1253 					0x61, TUNER_THOMSON_DTT761X)) {
1254 				result = -EINVAL;
1255 				goto out_free;
1256 			}
1257 		}
1258 		break;
1259 	case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900_R2:
1260 	case EM2882_BOARD_PINNACLE_HYBRID_PRO_330E:
1261 		dvb->fe[0] = dvb_attach(drxd_attach, &em28xx_drxd, NULL,
1262 					   &dev->i2c_adap[dev->def_i2c_bus], &dev->udev->dev);
1263 		if (em28xx_attach_xc3028(0x61, dev) < 0) {
1264 			result = -EINVAL;
1265 			goto out_free;
1266 		}
1267 		break;
1268 	case EM2870_BOARD_REDDO_DVB_C_USB_BOX:
1269 		/* Philips CU1216L NIM (Philips TDA10023 + Infineon TUA6034) */
1270 		dvb->fe[0] = dvb_attach(tda10023_attach,
1271 			&em28xx_tda10023_config,
1272 			&dev->i2c_adap[dev->def_i2c_bus], 0x48);
1273 		if (dvb->fe[0]) {
1274 			if (!dvb_attach(simple_tuner_attach, dvb->fe[0],
1275 					&dev->i2c_adap[dev->def_i2c_bus],
1276 					0x60, TUNER_PHILIPS_CU1216L)) {
1277 				result = -EINVAL;
1278 				goto out_free;
1279 			}
1280 		}
1281 		break;
1282 	case EM2870_BOARD_KWORLD_A340:
1283 		dvb->fe[0] = dvb_attach(lgdt3305_attach,
1284 					   &em2870_lgdt3304_dev,
1285 					   &dev->i2c_adap[dev->def_i2c_bus]);
1286 		if (!dvb->fe[0]) {
1287 			result = -EINVAL;
1288 			goto out_free;
1289 		}
1290 		if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
1291 				&dev->i2c_adap[dev->def_i2c_bus],
1292 			&kworld_a340_config)) {
1293 				dvb_frontend_detach(dvb->fe[0]);
1294 				result = -EINVAL;
1295 				goto out_free;
1296 		}
1297 		break;
1298 	case EM28174_BOARD_PCTV_290E:
1299 		/* set default GPIO0 for LNA, used if GPIOLIB is undefined */
1300 		dvb->lna_gpio = CXD2820R_GPIO_E | CXD2820R_GPIO_O |
1301 				CXD2820R_GPIO_L;
1302 		dvb->fe[0] = dvb_attach(cxd2820r_attach,
1303 					&em28xx_cxd2820r_config,
1304 					&dev->i2c_adap[dev->def_i2c_bus],
1305 					&dvb->lna_gpio);
1306 		if (dvb->fe[0]) {
1307 			/* FE 0 attach tuner */
1308 			if (!dvb_attach(tda18271_attach,
1309 					dvb->fe[0],
1310 					0x60,
1311 					&dev->i2c_adap[dev->def_i2c_bus],
1312 					&em28xx_cxd2820r_tda18271_config)) {
1313 
1314 				dvb_frontend_detach(dvb->fe[0]);
1315 				result = -EINVAL;
1316 				goto out_free;
1317 			}
1318 
1319 #ifdef CONFIG_GPIOLIB
1320 			/* enable LNA for DVB-T, DVB-T2 and DVB-C */
1321 			result = gpio_request_one(dvb->lna_gpio,
1322 						  GPIOF_OUT_INIT_LOW, NULL);
1323 			if (result)
1324 				em28xx_errdev("gpio request failed %d\n",
1325 					      result);
1326 			else
1327 				gpio_free(dvb->lna_gpio);
1328 
1329 			result = 0; /* continue even set LNA fails */
1330 #endif
1331 			dvb->fe[0]->ops.set_lna = em28xx_pctv_290e_set_lna;
1332 		}
1333 
1334 		break;
1335 	case EM2884_BOARD_HAUPPAUGE_WINTV_HVR_930C:
1336 	{
1337 		struct xc5000_config cfg;
1338 
1339 		hauppauge_hvr930c_init(dev);
1340 
1341 		dvb->fe[0] = dvb_attach(drxk_attach,
1342 					&hauppauge_930c_drxk, &dev->i2c_adap[dev->def_i2c_bus]);
1343 		if (!dvb->fe[0]) {
1344 			result = -EINVAL;
1345 			goto out_free;
1346 		}
1347 		/* FIXME: do we need a pll semaphore? */
1348 		dvb->fe[0]->sec_priv = dvb;
1349 		sema_init(&dvb->pll_mutex, 1);
1350 		dvb->gate_ctrl = dvb->fe[0]->ops.i2c_gate_ctrl;
1351 		dvb->fe[0]->ops.i2c_gate_ctrl = drxk_gate_ctrl;
1352 
1353 		/* Attach xc5000 */
1354 		memset(&cfg, 0, sizeof(cfg));
1355 		cfg.i2c_address  = 0x61;
1356 		cfg.if_khz = 4000;
1357 
1358 		if (dvb->fe[0]->ops.i2c_gate_ctrl)
1359 			dvb->fe[0]->ops.i2c_gate_ctrl(dvb->fe[0], 1);
1360 		if (!dvb_attach(xc5000_attach, dvb->fe[0], &dev->i2c_adap[dev->def_i2c_bus],
1361 				&cfg)) {
1362 			result = -EINVAL;
1363 			goto out_free;
1364 		}
1365 		if (dvb->fe[0]->ops.i2c_gate_ctrl)
1366 			dvb->fe[0]->ops.i2c_gate_ctrl(dvb->fe[0], 0);
1367 
1368 		break;
1369 	}
1370 	case EM2884_BOARD_TERRATEC_H5:
1371 		terratec_h5_init(dev);
1372 
1373 		dvb->fe[0] = dvb_attach(drxk_attach, &terratec_h5_drxk, &dev->i2c_adap[dev->def_i2c_bus]);
1374 		if (!dvb->fe[0]) {
1375 			result = -EINVAL;
1376 			goto out_free;
1377 		}
1378 		/* FIXME: do we need a pll semaphore? */
1379 		dvb->fe[0]->sec_priv = dvb;
1380 		sema_init(&dvb->pll_mutex, 1);
1381 		dvb->gate_ctrl = dvb->fe[0]->ops.i2c_gate_ctrl;
1382 		dvb->fe[0]->ops.i2c_gate_ctrl = drxk_gate_ctrl;
1383 
1384 		/* Attach tda18271 to DVB-C frontend */
1385 		if (dvb->fe[0]->ops.i2c_gate_ctrl)
1386 			dvb->fe[0]->ops.i2c_gate_ctrl(dvb->fe[0], 1);
1387 		if (!dvb_attach(tda18271c2dd_attach, dvb->fe[0], &dev->i2c_adap[dev->def_i2c_bus], 0x60)) {
1388 			result = -EINVAL;
1389 			goto out_free;
1390 		}
1391 		if (dvb->fe[0]->ops.i2c_gate_ctrl)
1392 			dvb->fe[0]->ops.i2c_gate_ctrl(dvb->fe[0], 0);
1393 
1394 		break;
1395 	case EM2884_BOARD_C3TECH_DIGITAL_DUO:
1396 		dvb->fe[0] = dvb_attach(mb86a20s_attach,
1397 					   &c3tech_duo_mb86a20s_config,
1398 					   &dev->i2c_adap[dev->def_i2c_bus]);
1399 		if (dvb->fe[0] != NULL)
1400 			dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
1401 				   &dev->i2c_adap[dev->def_i2c_bus],
1402 				   &c3tech_duo_tda18271_config);
1403 		break;
1404 	case EM28174_BOARD_PCTV_460E: {
1405 		struct i2c_client *client;
1406 		struct i2c_board_info board_info;
1407 		struct tda10071_platform_data tda10071_pdata = {};
1408 		struct a8293_platform_data a8293_pdata = {};
1409 
1410 		/* attach demod + tuner combo */
1411 		tda10071_pdata.clk = 40444000, /* 40.444 MHz */
1412 		tda10071_pdata.i2c_wr_max = 64,
1413 		tda10071_pdata.ts_mode = TDA10071_TS_SERIAL,
1414 		tda10071_pdata.pll_multiplier = 20,
1415 		tda10071_pdata.tuner_i2c_addr = 0x14,
1416 		memset(&board_info, 0, sizeof(board_info));
1417 		strlcpy(board_info.type, "tda10071_cx24118", I2C_NAME_SIZE);
1418 		board_info.addr = 0x55;
1419 		board_info.platform_data = &tda10071_pdata;
1420 		request_module("tda10071");
1421 		client = i2c_new_device(&dev->i2c_adap[dev->def_i2c_bus], &board_info);
1422 		if (client == NULL || client->dev.driver == NULL) {
1423 			result = -ENODEV;
1424 			goto out_free;
1425 		}
1426 		if (!try_module_get(client->dev.driver->owner)) {
1427 			i2c_unregister_device(client);
1428 			result = -ENODEV;
1429 			goto out_free;
1430 		}
1431 		dvb->fe[0] = tda10071_pdata.get_dvb_frontend(client);
1432 		dvb->i2c_client_demod = client;
1433 
1434 		/* attach SEC */
1435 		a8293_pdata.dvb_frontend = dvb->fe[0];
1436 		memset(&board_info, 0, sizeof(board_info));
1437 		strlcpy(board_info.type, "a8293", I2C_NAME_SIZE);
1438 		board_info.addr = 0x08;
1439 		board_info.platform_data = &a8293_pdata;
1440 		request_module("a8293");
1441 		client = i2c_new_device(&dev->i2c_adap[dev->def_i2c_bus], &board_info);
1442 		if (client == NULL || client->dev.driver == NULL) {
1443 			module_put(dvb->i2c_client_demod->dev.driver->owner);
1444 			i2c_unregister_device(dvb->i2c_client_demod);
1445 			result = -ENODEV;
1446 			goto out_free;
1447 		}
1448 		if (!try_module_get(client->dev.driver->owner)) {
1449 			i2c_unregister_device(client);
1450 			module_put(dvb->i2c_client_demod->dev.driver->owner);
1451 			i2c_unregister_device(dvb->i2c_client_demod);
1452 			result = -ENODEV;
1453 			goto out_free;
1454 		}
1455 		dvb->i2c_client_sec = client;
1456 		break;
1457 	}
1458 	case EM2874_BOARD_DELOCK_61959:
1459 	case EM2874_BOARD_MAXMEDIA_UB425_TC:
1460 		/* attach demodulator */
1461 		dvb->fe[0] = dvb_attach(drxk_attach, &maxmedia_ub425_tc_drxk,
1462 				&dev->i2c_adap[dev->def_i2c_bus]);
1463 
1464 		if (dvb->fe[0]) {
1465 			/* disable I2C-gate */
1466 			dvb->fe[0]->ops.i2c_gate_ctrl = NULL;
1467 
1468 			/* attach tuner */
1469 			if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
1470 					&dev->i2c_adap[dev->def_i2c_bus],
1471 					&em28xx_cxd2820r_tda18271_config)) {
1472 				dvb_frontend_detach(dvb->fe[0]);
1473 				result = -EINVAL;
1474 				goto out_free;
1475 			}
1476 		}
1477 		break;
1478 	case EM2884_BOARD_PCTV_510E:
1479 	case EM2884_BOARD_PCTV_520E:
1480 		pctv_520e_init(dev);
1481 
1482 		/* attach demodulator */
1483 		dvb->fe[0] = dvb_attach(drxk_attach, &pctv_520e_drxk,
1484 				&dev->i2c_adap[dev->def_i2c_bus]);
1485 
1486 		if (dvb->fe[0]) {
1487 			/* attach tuner */
1488 			if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
1489 					&dev->i2c_adap[dev->def_i2c_bus],
1490 					&em28xx_cxd2820r_tda18271_config)) {
1491 				dvb_frontend_detach(dvb->fe[0]);
1492 				result = -EINVAL;
1493 				goto out_free;
1494 			}
1495 		}
1496 		break;
1497 	case EM2884_BOARD_ELGATO_EYETV_HYBRID_2008:
1498 	case EM2884_BOARD_CINERGY_HTC_STICK:
1499 		terratec_htc_stick_init(dev);
1500 
1501 		/* attach demodulator */
1502 		dvb->fe[0] = dvb_attach(drxk_attach, &terratec_htc_stick_drxk,
1503 					&dev->i2c_adap[dev->def_i2c_bus]);
1504 		if (!dvb->fe[0]) {
1505 			result = -EINVAL;
1506 			goto out_free;
1507 		}
1508 
1509 		/* Attach the demodulator. */
1510 		if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
1511 				&dev->i2c_adap[dev->def_i2c_bus],
1512 				&em28xx_cxd2820r_tda18271_config)) {
1513 			result = -EINVAL;
1514 			goto out_free;
1515 		}
1516 		break;
1517 	case EM2884_BOARD_TERRATEC_HTC_USB_XS:
1518 		terratec_htc_usb_xs_init(dev);
1519 
1520 		/* attach demodulator */
1521 		dvb->fe[0] = dvb_attach(drxk_attach, &terratec_htc_stick_drxk,
1522 					&dev->i2c_adap[dev->def_i2c_bus]);
1523 		if (!dvb->fe[0]) {
1524 			result = -EINVAL;
1525 			goto out_free;
1526 		}
1527 
1528 		/* Attach the demodulator. */
1529 		if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
1530 				&dev->i2c_adap[dev->def_i2c_bus],
1531 				&em28xx_cxd2820r_tda18271_config)) {
1532 			result = -EINVAL;
1533 			goto out_free;
1534 		}
1535 		break;
1536 	case EM2874_BOARD_KWORLD_UB435Q_V2:
1537 		dvb->fe[0] = dvb_attach(lgdt3305_attach,
1538 					&em2874_lgdt3305_dev,
1539 					&dev->i2c_adap[dev->def_i2c_bus]);
1540 		if (!dvb->fe[0]) {
1541 			result = -EINVAL;
1542 			goto out_free;
1543 		}
1544 
1545 		/* Attach the demodulator. */
1546 		if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
1547 				&dev->i2c_adap[dev->def_i2c_bus],
1548 				&kworld_ub435q_v2_config)) {
1549 			result = -EINVAL;
1550 			goto out_free;
1551 		}
1552 		break;
1553 	case EM2874_BOARD_KWORLD_UB435Q_V3:
1554 	{
1555 		struct i2c_client *client;
1556 		struct i2c_adapter *adapter = &dev->i2c_adap[dev->def_i2c_bus];
1557 		struct i2c_board_info board_info = {
1558 			.type = "tda18212",
1559 			.addr = 0x60,
1560 			.platform_data = &kworld_ub435q_v3_config,
1561 		};
1562 
1563 		dvb->fe[0] = dvb_attach(lgdt3305_attach,
1564 					&em2874_lgdt3305_nogate_dev,
1565 					&dev->i2c_adap[dev->def_i2c_bus]);
1566 		if (!dvb->fe[0]) {
1567 			result = -EINVAL;
1568 			goto out_free;
1569 		}
1570 
1571 		/* attach tuner */
1572 		kworld_ub435q_v3_config.fe = dvb->fe[0];
1573 		request_module("tda18212");
1574 		client = i2c_new_device(adapter, &board_info);
1575 		if (client == NULL || client->dev.driver == NULL) {
1576 			dvb_frontend_detach(dvb->fe[0]);
1577 			result = -ENODEV;
1578 			goto out_free;
1579 		}
1580 
1581 		if (!try_module_get(client->dev.driver->owner)) {
1582 			i2c_unregister_device(client);
1583 			dvb_frontend_detach(dvb->fe[0]);
1584 			result = -ENODEV;
1585 			goto out_free;
1586 		}
1587 
1588 		dvb->i2c_client_tuner = client;
1589 		break;
1590 	}
1591 	case EM2874_BOARD_PCTV_HD_MINI_80E:
1592 		dvb->fe[0] = dvb_attach(drx39xxj_attach, &dev->i2c_adap[dev->def_i2c_bus]);
1593 		if (dvb->fe[0] != NULL) {
1594 			dvb->fe[0] = dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
1595 						&dev->i2c_adap[dev->def_i2c_bus],
1596 						&pinnacle_80e_dvb_config);
1597 			if (!dvb->fe[0]) {
1598 				result = -EINVAL;
1599 				goto out_free;
1600 			}
1601 		}
1602 		break;
1603 	case EM28178_BOARD_PCTV_461E: {
1604 		struct i2c_client *client;
1605 		struct i2c_adapter *i2c_adapter;
1606 		struct i2c_board_info board_info;
1607 		struct m88ds3103_platform_data m88ds3103_pdata = {};
1608 		struct ts2020_config ts2020_config = {};
1609 		struct a8293_platform_data a8293_pdata = {};
1610 
1611 		/* attach demod */
1612 		m88ds3103_pdata.clk = 27000000;
1613 		m88ds3103_pdata.i2c_wr_max = 33;
1614 		m88ds3103_pdata.ts_mode = M88DS3103_TS_PARALLEL;
1615 		m88ds3103_pdata.ts_clk = 16000;
1616 		m88ds3103_pdata.ts_clk_pol = 1;
1617 		m88ds3103_pdata.agc = 0x99;
1618 		memset(&board_info, 0, sizeof(board_info));
1619 		strlcpy(board_info.type, "m88ds3103", I2C_NAME_SIZE);
1620 		board_info.addr = 0x68;
1621 		board_info.platform_data = &m88ds3103_pdata;
1622 		request_module("m88ds3103");
1623 		client = i2c_new_device(&dev->i2c_adap[dev->def_i2c_bus], &board_info);
1624 		if (client == NULL || client->dev.driver == NULL) {
1625 			result = -ENODEV;
1626 			goto out_free;
1627 		}
1628 		if (!try_module_get(client->dev.driver->owner)) {
1629 			i2c_unregister_device(client);
1630 			result = -ENODEV;
1631 			goto out_free;
1632 		}
1633 		dvb->fe[0] = m88ds3103_pdata.get_dvb_frontend(client);
1634 		i2c_adapter = m88ds3103_pdata.get_i2c_adapter(client);
1635 		dvb->i2c_client_demod = client;
1636 
1637 		/* attach tuner */
1638 		ts2020_config.fe = dvb->fe[0];
1639 		memset(&board_info, 0, sizeof(board_info));
1640 		strlcpy(board_info.type, "ts2022", I2C_NAME_SIZE);
1641 		board_info.addr = 0x60;
1642 		board_info.platform_data = &ts2020_config;
1643 		request_module("ts2020");
1644 		client = i2c_new_device(i2c_adapter, &board_info);
1645 		if (client == NULL || client->dev.driver == NULL) {
1646 			module_put(dvb->i2c_client_demod->dev.driver->owner);
1647 			i2c_unregister_device(dvb->i2c_client_demod);
1648 			result = -ENODEV;
1649 			goto out_free;
1650 		}
1651 		if (!try_module_get(client->dev.driver->owner)) {
1652 			i2c_unregister_device(client);
1653 			module_put(dvb->i2c_client_demod->dev.driver->owner);
1654 			i2c_unregister_device(dvb->i2c_client_demod);
1655 			result = -ENODEV;
1656 			goto out_free;
1657 		}
1658 		dvb->i2c_client_tuner = client;
1659 		/* delegate signal strength measurement to tuner */
1660 		dvb->fe[0]->ops.read_signal_strength =
1661 				dvb->fe[0]->ops.tuner_ops.get_rf_strength;
1662 
1663 		/* attach SEC */
1664 		a8293_pdata.dvb_frontend = dvb->fe[0];
1665 		memset(&board_info, 0, sizeof(board_info));
1666 		strlcpy(board_info.type, "a8293", I2C_NAME_SIZE);
1667 		board_info.addr = 0x08;
1668 		board_info.platform_data = &a8293_pdata;
1669 		request_module("a8293");
1670 		client = i2c_new_device(&dev->i2c_adap[dev->def_i2c_bus], &board_info);
1671 		if (client == NULL || client->dev.driver == NULL) {
1672 			module_put(dvb->i2c_client_tuner->dev.driver->owner);
1673 			i2c_unregister_device(dvb->i2c_client_tuner);
1674 			module_put(dvb->i2c_client_demod->dev.driver->owner);
1675 			i2c_unregister_device(dvb->i2c_client_demod);
1676 			result = -ENODEV;
1677 			goto out_free;
1678 		}
1679 		if (!try_module_get(client->dev.driver->owner)) {
1680 			i2c_unregister_device(client);
1681 			module_put(dvb->i2c_client_tuner->dev.driver->owner);
1682 			i2c_unregister_device(dvb->i2c_client_tuner);
1683 			module_put(dvb->i2c_client_demod->dev.driver->owner);
1684 			i2c_unregister_device(dvb->i2c_client_demod);
1685 			result = -ENODEV;
1686 			goto out_free;
1687 		}
1688 		dvb->i2c_client_sec = client;
1689 		break;
1690 	}
1691 	case EM28178_BOARD_PCTV_292E:
1692 		{
1693 			struct i2c_adapter *adapter;
1694 			struct i2c_client *client;
1695 			struct i2c_board_info info;
1696 			struct si2168_config si2168_config;
1697 			struct si2157_config si2157_config;
1698 
1699 			/* attach demod */
1700 			memset(&si2168_config, 0, sizeof(si2168_config));
1701 			si2168_config.i2c_adapter = &adapter;
1702 			si2168_config.fe = &dvb->fe[0];
1703 			si2168_config.ts_mode = SI2168_TS_PARALLEL;
1704 			memset(&info, 0, sizeof(struct i2c_board_info));
1705 			strlcpy(info.type, "si2168", I2C_NAME_SIZE);
1706 			info.addr = 0x64;
1707 			info.platform_data = &si2168_config;
1708 			request_module(info.type);
1709 			client = i2c_new_device(&dev->i2c_adap[dev->def_i2c_bus], &info);
1710 			if (client == NULL || client->dev.driver == NULL) {
1711 				result = -ENODEV;
1712 				goto out_free;
1713 			}
1714 
1715 			if (!try_module_get(client->dev.driver->owner)) {
1716 				i2c_unregister_device(client);
1717 				result = -ENODEV;
1718 				goto out_free;
1719 			}
1720 
1721 			dvb->i2c_client_demod = client;
1722 
1723 			/* attach tuner */
1724 			memset(&si2157_config, 0, sizeof(si2157_config));
1725 			si2157_config.fe = dvb->fe[0];
1726 			si2157_config.if_port = 1;
1727 #ifdef CONFIG_MEDIA_CONTROLLER_DVB
1728 			si2157_config.mdev = dev->media_dev;
1729 #endif
1730 			memset(&info, 0, sizeof(struct i2c_board_info));
1731 			strlcpy(info.type, "si2157", I2C_NAME_SIZE);
1732 			info.addr = 0x60;
1733 			info.platform_data = &si2157_config;
1734 			request_module(info.type);
1735 			client = i2c_new_device(adapter, &info);
1736 			if (client == NULL || client->dev.driver == NULL) {
1737 				module_put(dvb->i2c_client_demod->dev.driver->owner);
1738 				i2c_unregister_device(dvb->i2c_client_demod);
1739 				result = -ENODEV;
1740 				goto out_free;
1741 			}
1742 
1743 			if (!try_module_get(client->dev.driver->owner)) {
1744 				i2c_unregister_device(client);
1745 				module_put(dvb->i2c_client_demod->dev.driver->owner);
1746 				i2c_unregister_device(dvb->i2c_client_demod);
1747 				result = -ENODEV;
1748 				goto out_free;
1749 			}
1750 
1751 			dvb->i2c_client_tuner = client;
1752 			dvb->fe[0]->ops.set_lna = em28xx_pctv_292e_set_lna;
1753 		}
1754 		break;
1755 	case EM28178_BOARD_TERRATEC_T2_STICK_HD:
1756 		{
1757 			struct i2c_adapter *adapter;
1758 			struct i2c_client *client;
1759 			struct i2c_board_info info;
1760 			struct si2168_config si2168_config;
1761 			struct si2157_config si2157_config;
1762 
1763 			/* attach demod */
1764 			memset(&si2168_config, 0, sizeof(si2168_config));
1765 			si2168_config.i2c_adapter = &adapter;
1766 			si2168_config.fe = &dvb->fe[0];
1767 			si2168_config.ts_mode = SI2168_TS_PARALLEL;
1768 			memset(&info, 0, sizeof(struct i2c_board_info));
1769 			strlcpy(info.type, "si2168", I2C_NAME_SIZE);
1770 			info.addr = 0x64;
1771 			info.platform_data = &si2168_config;
1772 			request_module(info.type);
1773 			client = i2c_new_device(&dev->i2c_adap[dev->def_i2c_bus], &info);
1774 			if (client == NULL || client->dev.driver == NULL) {
1775 				result = -ENODEV;
1776 				goto out_free;
1777 			}
1778 
1779 			if (!try_module_get(client->dev.driver->owner)) {
1780 				i2c_unregister_device(client);
1781 				result = -ENODEV;
1782 				goto out_free;
1783 			}
1784 
1785 			dvb->i2c_client_demod = client;
1786 
1787 			/* attach tuner */
1788 			memset(&si2157_config, 0, sizeof(si2157_config));
1789 			si2157_config.fe = dvb->fe[0];
1790 			si2157_config.if_port = 0;
1791 #ifdef CONFIG_MEDIA_CONTROLLER_DVB
1792 			si2157_config.mdev = dev->media_dev;
1793 #endif
1794 			memset(&info, 0, sizeof(struct i2c_board_info));
1795 			strlcpy(info.type, "si2146", I2C_NAME_SIZE);
1796 			info.addr = 0x60;
1797 			info.platform_data = &si2157_config;
1798 			request_module("si2157");
1799 			client = i2c_new_device(adapter, &info);
1800 			if (client == NULL || client->dev.driver == NULL) {
1801 				module_put(dvb->i2c_client_demod->dev.driver->owner);
1802 				i2c_unregister_device(dvb->i2c_client_demod);
1803 				result = -ENODEV;
1804 				goto out_free;
1805 			}
1806 
1807 			if (!try_module_get(client->dev.driver->owner)) {
1808 				i2c_unregister_device(client);
1809 				module_put(dvb->i2c_client_demod->dev.driver->owner);
1810 				i2c_unregister_device(dvb->i2c_client_demod);
1811 				result = -ENODEV;
1812 				goto out_free;
1813 			}
1814 
1815 			dvb->i2c_client_tuner = client;
1816 		}
1817 		break;
1818 
1819 	case EM28178_BOARD_PLEX_PX_BCUD:
1820 		{
1821 			struct i2c_client *client;
1822 			struct i2c_board_info info;
1823 			struct tc90522_config tc90522_config;
1824 			struct qm1d1c0042_config qm1d1c0042_config;
1825 
1826 			/* attach demod */
1827 			memset(&tc90522_config, 0, sizeof(tc90522_config));
1828 			memset(&info, 0, sizeof(struct i2c_board_info));
1829 			strlcpy(info.type, "tc90522sat", I2C_NAME_SIZE);
1830 			info.addr = 0x15;
1831 			info.platform_data = &tc90522_config;
1832 			request_module("tc90522");
1833 			client = i2c_new_device(&dev->i2c_adap[dev->def_i2c_bus], &info);
1834 			if (client == NULL || client->dev.driver == NULL) {
1835 				result = -ENODEV;
1836 				goto out_free;
1837 			}
1838 			dvb->i2c_client_demod = client;
1839 			if (!try_module_get(client->dev.driver->owner)) {
1840 				i2c_unregister_device(client);
1841 				result = -ENODEV;
1842 				goto out_free;
1843 			}
1844 
1845 			/* attach tuner */
1846 			memset(&qm1d1c0042_config, 0,
1847 			       sizeof(qm1d1c0042_config));
1848 			qm1d1c0042_config.fe = tc90522_config.fe;
1849 			qm1d1c0042_config.lpf = 1;
1850 			memset(&info, 0, sizeof(struct i2c_board_info));
1851 			strlcpy(info.type, "qm1d1c0042", I2C_NAME_SIZE);
1852 			info.addr = 0x61;
1853 			info.platform_data = &qm1d1c0042_config;
1854 			request_module(info.type);
1855 			client = i2c_new_device(tc90522_config.tuner_i2c,
1856 						&info);
1857 			if (client == NULL || client->dev.driver == NULL) {
1858 				module_put(dvb->i2c_client_demod->dev.driver->owner);
1859 				i2c_unregister_device(dvb->i2c_client_demod);
1860 				result = -ENODEV;
1861 				goto out_free;
1862 			}
1863 			dvb->i2c_client_tuner = client;
1864 			if (!try_module_get(client->dev.driver->owner)) {
1865 				i2c_unregister_device(client);
1866 				module_put(dvb->i2c_client_demod->dev.driver->owner);
1867 				i2c_unregister_device(dvb->i2c_client_demod);
1868 				result = -ENODEV;
1869 				goto out_free;
1870 			}
1871 			dvb->fe[0] = tc90522_config.fe;
1872 			px_bcud_init(dev);
1873 		}
1874 		break;
1875 	case EM28174_BOARD_HAUPPAUGE_WINTV_DUALHD_DVB:
1876 		{
1877 			struct i2c_adapter *adapter;
1878 			struct i2c_client *client;
1879 			struct i2c_board_info info;
1880 			struct si2168_config si2168_config;
1881 			struct si2157_config si2157_config;
1882 
1883 			/* attach demod */
1884 			memset(&si2168_config, 0, sizeof(si2168_config));
1885 			si2168_config.i2c_adapter = &adapter;
1886 			si2168_config.fe = &dvb->fe[0];
1887 			si2168_config.ts_mode = SI2168_TS_SERIAL;
1888 			memset(&info, 0, sizeof(struct i2c_board_info));
1889 			strlcpy(info.type, "si2168", I2C_NAME_SIZE);
1890 			info.addr = 0x64;
1891 			info.platform_data = &si2168_config;
1892 			request_module(info.type);
1893 			client = i2c_new_device(&dev->i2c_adap[dev->def_i2c_bus], &info);
1894 			if (client == NULL || client->dev.driver == NULL) {
1895 				result = -ENODEV;
1896 				goto out_free;
1897 			}
1898 
1899 			if (!try_module_get(client->dev.driver->owner)) {
1900 				i2c_unregister_device(client);
1901 				result = -ENODEV;
1902 				goto out_free;
1903 			}
1904 
1905 			dvb->i2c_client_demod = client;
1906 
1907 			/* attach tuner */
1908 			memset(&si2157_config, 0, sizeof(si2157_config));
1909 			si2157_config.fe = dvb->fe[0];
1910 			si2157_config.if_port = 1;
1911 #ifdef CONFIG_MEDIA_CONTROLLER_DVB
1912 			si2157_config.mdev = dev->media_dev;
1913 #endif
1914 			memset(&info, 0, sizeof(struct i2c_board_info));
1915 			strlcpy(info.type, "si2157", I2C_NAME_SIZE);
1916 			info.addr = 0x60;
1917 			info.platform_data = &si2157_config;
1918 			request_module(info.type);
1919 			client = i2c_new_device(adapter, &info);
1920 			if (client == NULL || client->dev.driver == NULL) {
1921 				module_put(dvb->i2c_client_demod->dev.driver->owner);
1922 				i2c_unregister_device(dvb->i2c_client_demod);
1923 				result = -ENODEV;
1924 				goto out_free;
1925 			}
1926 
1927 			if (!try_module_get(client->dev.driver->owner)) {
1928 				i2c_unregister_device(client);
1929 				module_put(dvb->i2c_client_demod->dev.driver->owner);
1930 				i2c_unregister_device(dvb->i2c_client_demod);
1931 				result = -ENODEV;
1932 				goto out_free;
1933 			}
1934 
1935 			dvb->i2c_client_tuner = client;
1936 
1937 		}
1938 		break;
1939 	default:
1940 		em28xx_errdev("/2: The frontend of your DVB/ATSC card"
1941 				" isn't supported yet\n");
1942 		break;
1943 	}
1944 	if (NULL == dvb->fe[0]) {
1945 		em28xx_errdev("/2: frontend initialization failed\n");
1946 		result = -EINVAL;
1947 		goto out_free;
1948 	}
1949 	/* define general-purpose callback pointer */
1950 	dvb->fe[0]->callback = em28xx_tuner_callback;
1951 	if (dvb->fe[1])
1952 		dvb->fe[1]->callback = em28xx_tuner_callback;
1953 
1954 	/* register everything */
1955 	result = em28xx_register_dvb(dvb, THIS_MODULE, dev, &dev->udev->dev);
1956 
1957 	if (result < 0)
1958 		goto out_free;
1959 
1960 	em28xx_info("DVB extension successfully initialized\n");
1961 
1962 	kref_get(&dev->ref);
1963 
1964 ret:
1965 	em28xx_set_mode(dev, EM28XX_SUSPEND);
1966 	mutex_unlock(&dev->lock);
1967 	return result;
1968 
1969 out_free:
1970 	kfree(dvb);
1971 	dev->dvb = NULL;
1972 	goto ret;
1973 }
1974 
1975 static inline void prevent_sleep(struct dvb_frontend_ops *ops)
1976 {
1977 	ops->set_voltage = NULL;
1978 	ops->sleep = NULL;
1979 	ops->tuner_ops.sleep = NULL;
1980 }
1981 
1982 static int em28xx_dvb_fini(struct em28xx *dev)
1983 {
1984 	struct em28xx_dvb *dvb;
1985 	struct i2c_client *client;
1986 
1987 	if (dev->is_audio_only) {
1988 		/* Shouldn't initialize IR for this interface */
1989 		return 0;
1990 	}
1991 
1992 	if (!dev->board.has_dvb) {
1993 		/* This device does not support the extension */
1994 		return 0;
1995 	}
1996 
1997 	if (!dev->dvb)
1998 		return 0;
1999 
2000 	em28xx_info("Closing DVB extension\n");
2001 
2002 	dvb = dev->dvb;
2003 
2004 	em28xx_uninit_usb_xfer(dev, EM28XX_DIGITAL_MODE);
2005 
2006 	if (dev->disconnected) {
2007 		/* We cannot tell the device to sleep
2008 		 * once it has been unplugged. */
2009 		if (dvb->fe[0]) {
2010 			prevent_sleep(&dvb->fe[0]->ops);
2011 			dvb->fe[0]->exit = DVB_FE_DEVICE_REMOVED;
2012 		}
2013 		if (dvb->fe[1]) {
2014 			prevent_sleep(&dvb->fe[1]->ops);
2015 			dvb->fe[1]->exit = DVB_FE_DEVICE_REMOVED;
2016 		}
2017 	}
2018 
2019 	/* remove I2C SEC */
2020 	client = dvb->i2c_client_sec;
2021 	if (client) {
2022 		module_put(client->dev.driver->owner);
2023 		i2c_unregister_device(client);
2024 	}
2025 
2026 	/* remove I2C tuner */
2027 	client = dvb->i2c_client_tuner;
2028 	if (client) {
2029 		module_put(client->dev.driver->owner);
2030 		i2c_unregister_device(client);
2031 	}
2032 
2033 	/* remove I2C demod */
2034 	client = dvb->i2c_client_demod;
2035 	if (client) {
2036 		module_put(client->dev.driver->owner);
2037 		i2c_unregister_device(client);
2038 	}
2039 
2040 	em28xx_unregister_dvb(dvb);
2041 	kfree(dvb);
2042 	dev->dvb = NULL;
2043 	kref_put(&dev->ref, em28xx_free_device);
2044 
2045 	return 0;
2046 }
2047 
2048 static int em28xx_dvb_suspend(struct em28xx *dev)
2049 {
2050 	int ret = 0;
2051 
2052 	if (dev->is_audio_only)
2053 		return 0;
2054 
2055 	if (!dev->board.has_dvb)
2056 		return 0;
2057 
2058 	em28xx_info("Suspending DVB extension\n");
2059 	if (dev->dvb) {
2060 		struct em28xx_dvb *dvb = dev->dvb;
2061 
2062 		if (dvb->fe[0]) {
2063 			ret = dvb_frontend_suspend(dvb->fe[0]);
2064 			em28xx_info("fe0 suspend %d\n", ret);
2065 		}
2066 		if (dvb->fe[1]) {
2067 			dvb_frontend_suspend(dvb->fe[1]);
2068 			em28xx_info("fe1 suspend %d\n", ret);
2069 		}
2070 	}
2071 
2072 	return 0;
2073 }
2074 
2075 static int em28xx_dvb_resume(struct em28xx *dev)
2076 {
2077 	int ret = 0;
2078 
2079 	if (dev->is_audio_only)
2080 		return 0;
2081 
2082 	if (!dev->board.has_dvb)
2083 		return 0;
2084 
2085 	em28xx_info("Resuming DVB extension\n");
2086 	if (dev->dvb) {
2087 		struct em28xx_dvb *dvb = dev->dvb;
2088 
2089 		if (dvb->fe[0]) {
2090 			ret = dvb_frontend_resume(dvb->fe[0]);
2091 			em28xx_info("fe0 resume %d\n", ret);
2092 		}
2093 
2094 		if (dvb->fe[1]) {
2095 			ret = dvb_frontend_resume(dvb->fe[1]);
2096 			em28xx_info("fe1 resume %d\n", ret);
2097 		}
2098 	}
2099 
2100 	return 0;
2101 }
2102 
2103 static struct em28xx_ops dvb_ops = {
2104 	.id   = EM28XX_DVB,
2105 	.name = "Em28xx dvb Extension",
2106 	.init = em28xx_dvb_init,
2107 	.fini = em28xx_dvb_fini,
2108 	.suspend = em28xx_dvb_suspend,
2109 	.resume = em28xx_dvb_resume,
2110 };
2111 
2112 static int __init em28xx_dvb_register(void)
2113 {
2114 	return em28xx_register_extension(&dvb_ops);
2115 }
2116 
2117 static void __exit em28xx_dvb_unregister(void)
2118 {
2119 	em28xx_unregister_extension(&dvb_ops);
2120 }
2121 
2122 module_init(em28xx_dvb_register);
2123 module_exit(em28xx_dvb_unregister);
2124