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 #include "em28xx.h"
21 
22 #include <linux/kernel.h>
23 #include <linux/slab.h>
24 #include <linux/usb.h>
25 
26 #include <media/v4l2-common.h>
27 #include <media/dvb_demux.h>
28 #include <media/dvb_net.h>
29 #include <media/dmxdev.h>
30 #include <media/tuner.h>
31 #include "tuner-simple.h"
32 #include <linux/gpio.h>
33 
34 #include "lgdt330x.h"
35 #include "lgdt3305.h"
36 #include "lgdt3306a.h"
37 #include "zl10353.h"
38 #include "s5h1409.h"
39 #include "mt2060.h"
40 #include "mt352.h"
41 #include "mt352_priv.h" /* FIXME */
42 #include "tda1002x.h"
43 #include "drx39xyj/drx39xxj.h"
44 #include "tda18271.h"
45 #include "s921.h"
46 #include "drxd.h"
47 #include "cxd2820r.h"
48 #include "tda18271c2dd.h"
49 #include "drxk.h"
50 #include "tda10071.h"
51 #include "tda18212.h"
52 #include "a8293.h"
53 #include "qt1010.h"
54 #include "mb86a20s.h"
55 #include "m88ds3103.h"
56 #include "ts2020.h"
57 #include "si2168.h"
58 #include "si2157.h"
59 #include "tc90522.h"
60 #include "qm1d1c0042.h"
61 #include "mxl692.h"
62 
63 MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@kernel.org>");
64 MODULE_LICENSE("GPL v2");
65 MODULE_DESCRIPTION(DRIVER_DESC " - digital TV interface");
66 MODULE_VERSION(EM28XX_VERSION);
67 
68 static unsigned int debug;
69 module_param(debug, int, 0644);
70 MODULE_PARM_DESC(debug, "enable debug messages [dvb]");
71 
72 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
73 
74 #define dprintk(level, fmt, arg...) do {				\
75 	if (debug >= level)						\
76 		dev_printk(KERN_DEBUG, &dev->intf->dev,			\
77 			   "dvb: " fmt, ## 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 *fe, int gate);
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 
print_err_status(struct em28xx * dev,int packet,int status)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 synchronously";
113 		break;
114 	case -ECONNRESET:
115 		errmsg = "unlinked asynchronously";
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 
em28xx_dvb_urb_data_copy(struct em28xx * dev,struct urb * urb)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 
em28xx_start_streaming(struct em28xx_dvb * dvb)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 	struct usb_device *udev = interface_to_usbdev(dev->intf);
200 	int dvb_max_packet_size, packet_multiplier, dvb_alt;
201 
202 	if (dev->dvb_xfer_bulk) {
203 		if (!dev->dvb_ep_bulk)
204 			return -ENODEV;
205 		dvb_max_packet_size = 512; /* USB 2.0 spec */
206 		packet_multiplier = EM28XX_DVB_BULK_PACKET_MULTIPLIER;
207 		dvb_alt = 0;
208 	} else { /* isoc */
209 		if (!dev->dvb_ep_isoc)
210 			return -ENODEV;
211 		dvb_max_packet_size = dev->dvb_max_pkt_size_isoc;
212 		if (dvb_max_packet_size < 0)
213 			return dvb_max_packet_size;
214 		packet_multiplier = EM28XX_DVB_NUM_ISOC_PACKETS;
215 		dvb_alt = dev->dvb_alt_isoc;
216 	}
217 
218 	if (!dev->board.has_dual_ts)
219 		usb_set_interface(udev, dev->ifnum, dvb_alt);
220 
221 	rc = em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
222 	if (rc < 0)
223 		return rc;
224 
225 	dprintk(1, "Using %d buffers each with %d x %d bytes, alternate %d\n",
226 		EM28XX_DVB_NUM_BUFS,
227 		packet_multiplier,
228 		dvb_max_packet_size, dvb_alt);
229 
230 	return em28xx_init_usb_xfer(dev, EM28XX_DIGITAL_MODE,
231 				    dev->dvb_xfer_bulk,
232 				    EM28XX_DVB_NUM_BUFS,
233 				    dvb_max_packet_size,
234 				    packet_multiplier,
235 				    em28xx_dvb_urb_data_copy);
236 }
237 
em28xx_stop_streaming(struct em28xx_dvb * dvb)238 static int em28xx_stop_streaming(struct em28xx_dvb *dvb)
239 {
240 	struct em28xx_i2c_bus *i2c_bus = dvb->adapter.priv;
241 	struct em28xx *dev = i2c_bus->dev;
242 
243 	em28xx_stop_urbs(dev);
244 
245 	return 0;
246 }
247 
em28xx_start_feed(struct dvb_demux_feed * feed)248 static int em28xx_start_feed(struct dvb_demux_feed *feed)
249 {
250 	struct dvb_demux *demux  = feed->demux;
251 	struct em28xx_dvb *dvb = demux->priv;
252 	int rc, ret;
253 
254 	if (!demux->dmx.frontend)
255 		return -EINVAL;
256 
257 	mutex_lock(&dvb->lock);
258 	dvb->nfeeds++;
259 	rc = dvb->nfeeds;
260 
261 	if (dvb->nfeeds == 1) {
262 		ret = em28xx_start_streaming(dvb);
263 		if (ret < 0)
264 			rc = ret;
265 	}
266 
267 	mutex_unlock(&dvb->lock);
268 	return rc;
269 }
270 
em28xx_stop_feed(struct dvb_demux_feed * feed)271 static int em28xx_stop_feed(struct dvb_demux_feed *feed)
272 {
273 	struct dvb_demux *demux  = feed->demux;
274 	struct em28xx_dvb *dvb = demux->priv;
275 	int err = 0;
276 
277 	mutex_lock(&dvb->lock);
278 	dvb->nfeeds--;
279 
280 	if (!dvb->nfeeds)
281 		err = em28xx_stop_streaming(dvb);
282 
283 	mutex_unlock(&dvb->lock);
284 	return err;
285 }
286 
287 /* ------------------------------------------------------------------ */
em28xx_dvb_bus_ctrl(struct dvb_frontend * fe,int acquire)288 static int em28xx_dvb_bus_ctrl(struct dvb_frontend *fe, int acquire)
289 {
290 	struct em28xx_i2c_bus *i2c_bus = fe->dvb->priv;
291 	struct em28xx *dev = i2c_bus->dev;
292 
293 	if (acquire)
294 		return em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
295 	else
296 		return em28xx_set_mode(dev, EM28XX_SUSPEND);
297 }
298 
299 /* ------------------------------------------------------------------ */
300 
301 static struct lgdt330x_config em2880_lgdt3303_dev = {
302 	.demod_chip = LGDT3303,
303 };
304 
305 static struct lgdt3305_config em2870_lgdt3304_dev = {
306 	.i2c_addr           = 0x0e,
307 	.demod_chip         = LGDT3304,
308 	.spectral_inversion = 1,
309 	.deny_i2c_rptr      = 1,
310 	.mpeg_mode          = LGDT3305_MPEG_PARALLEL,
311 	.tpclk_edge         = LGDT3305_TPCLK_FALLING_EDGE,
312 	.tpvalid_polarity   = LGDT3305_TP_VALID_HIGH,
313 	.vsb_if_khz         = 3250,
314 	.qam_if_khz         = 4000,
315 };
316 
317 static struct lgdt3305_config em2874_lgdt3305_dev = {
318 	.i2c_addr           = 0x0e,
319 	.demod_chip         = LGDT3305,
320 	.spectral_inversion = 1,
321 	.deny_i2c_rptr      = 0,
322 	.mpeg_mode          = LGDT3305_MPEG_SERIAL,
323 	.tpclk_edge         = LGDT3305_TPCLK_FALLING_EDGE,
324 	.tpvalid_polarity   = LGDT3305_TP_VALID_HIGH,
325 	.vsb_if_khz         = 3250,
326 	.qam_if_khz         = 4000,
327 };
328 
329 static struct lgdt3305_config em2874_lgdt3305_nogate_dev = {
330 	.i2c_addr           = 0x0e,
331 	.demod_chip         = LGDT3305,
332 	.spectral_inversion = 1,
333 	.deny_i2c_rptr      = 1,
334 	.mpeg_mode          = LGDT3305_MPEG_SERIAL,
335 	.tpclk_edge         = LGDT3305_TPCLK_FALLING_EDGE,
336 	.tpvalid_polarity   = LGDT3305_TP_VALID_HIGH,
337 	.vsb_if_khz         = 3600,
338 	.qam_if_khz         = 3600,
339 };
340 
341 static struct s921_config sharp_isdbt = {
342 	.demod_address = 0x30 >> 1
343 };
344 
345 static struct zl10353_config em28xx_zl10353_with_xc3028 = {
346 	.demod_address = (0x1e >> 1),
347 	.no_tuner = 1,
348 	.parallel_ts = 1,
349 	.if2 = 45600,
350 };
351 
352 static struct s5h1409_config em28xx_s5h1409_with_xc3028 = {
353 	.demod_address = 0x32 >> 1,
354 	.output_mode   = S5H1409_PARALLEL_OUTPUT,
355 	.gpio          = S5H1409_GPIO_OFF,
356 	.inversion     = S5H1409_INVERSION_OFF,
357 	.status_mode   = S5H1409_DEMODLOCKING,
358 	.mpeg_timing   = S5H1409_MPEGTIMING_CONTINUOUS_NONINVERTING_CLOCK
359 };
360 
361 static struct tda18271_std_map kworld_a340_std_map = {
362 	.atsc_6   = { .if_freq = 3250, .agc_mode = 3, .std = 0,
363 		      .if_lvl = 1, .rfagc_top = 0x37, },
364 	.qam_6    = { .if_freq = 4000, .agc_mode = 3, .std = 1,
365 		      .if_lvl = 1, .rfagc_top = 0x37, },
366 };
367 
368 static struct tda18271_config kworld_a340_config = {
369 	.std_map           = &kworld_a340_std_map,
370 };
371 
372 static struct tda18271_config kworld_ub435q_v2_config = {
373 	.std_map	= &kworld_a340_std_map,
374 	.gate		= TDA18271_GATE_DIGITAL,
375 };
376 
377 static struct tda18212_config kworld_ub435q_v3_config = {
378 	.if_atsc_vsb	= 3600,
379 	.if_atsc_qam	= 3600,
380 };
381 
382 static struct zl10353_config em28xx_zl10353_xc3028_no_i2c_gate = {
383 	.demod_address = (0x1e >> 1),
384 	.no_tuner = 1,
385 	.disable_i2c_gate_ctrl = 1,
386 	.parallel_ts = 1,
387 	.if2 = 45600,
388 };
389 
390 static struct drxd_config em28xx_drxd = {
391 	.demod_address = 0x70,
392 	.demod_revision = 0xa2,
393 	.pll_type = DRXD_PLL_NONE,
394 	.clock = 12000,
395 	.insert_rs_byte = 1,
396 	.IF = 42800000,
397 	.disable_i2c_gate_ctrl = 1,
398 };
399 
400 static struct drxk_config terratec_h5_drxk = {
401 	.adr = 0x29,
402 	.single_master = 1,
403 	.no_i2c_bridge = 1,
404 	.microcode_name = "dvb-usb-terratec-h5-drxk.fw",
405 	.qam_demod_parameter_count = 2,
406 };
407 
408 static struct drxk_config hauppauge_930c_drxk = {
409 	.adr = 0x29,
410 	.single_master = 1,
411 	.no_i2c_bridge = 1,
412 	.microcode_name = "dvb-usb-hauppauge-hvr930c-drxk.fw",
413 	.chunk_size = 56,
414 	.qam_demod_parameter_count = 2,
415 };
416 
417 static struct drxk_config terratec_htc_stick_drxk = {
418 	.adr = 0x29,
419 	.single_master = 1,
420 	.no_i2c_bridge = 1,
421 	.microcode_name = "dvb-usb-terratec-htc-stick-drxk.fw",
422 	.chunk_size = 54,
423 	.qam_demod_parameter_count = 2,
424 	/* Required for the antenna_gpio to disable LNA. */
425 	.antenna_dvbt = true,
426 	/* The windows driver uses the same. This will disable LNA. */
427 	.antenna_gpio = 0x6,
428 };
429 
430 static struct drxk_config maxmedia_ub425_tc_drxk = {
431 	.adr = 0x29,
432 	.single_master = 1,
433 	.no_i2c_bridge = 1,
434 	.microcode_name = "dvb-demod-drxk-01.fw",
435 	.chunk_size = 62,
436 	.qam_demod_parameter_count = 2,
437 };
438 
439 static struct drxk_config pctv_520e_drxk = {
440 	.adr = 0x29,
441 	.single_master = 1,
442 	.microcode_name = "dvb-demod-drxk-pctv.fw",
443 	.qam_demod_parameter_count = 2,
444 	.chunk_size = 58,
445 	.antenna_dvbt = true, /* disable LNA */
446 	.antenna_gpio = (1 << 2), /* disable LNA */
447 };
448 
drxk_gate_ctrl(struct dvb_frontend * fe,int enable)449 static int drxk_gate_ctrl(struct dvb_frontend *fe, int enable)
450 {
451 	struct em28xx_dvb *dvb = fe->sec_priv;
452 	int status;
453 
454 	if (!dvb)
455 		return -EINVAL;
456 
457 	if (enable) {
458 		down(&dvb->pll_mutex);
459 		status = dvb->gate_ctrl(fe, 1);
460 	} else {
461 		status = dvb->gate_ctrl(fe, 0);
462 		up(&dvb->pll_mutex);
463 	}
464 	return status;
465 }
466 
hauppauge_hvr930c_init(struct em28xx * dev)467 static void hauppauge_hvr930c_init(struct em28xx *dev)
468 {
469 	int i;
470 
471 	static const struct em28xx_reg_seq hauppauge_hvr930c_init[] = {
472 		{EM2874_R80_GPIO_P0_CTRL,	0xff,	0xff,	0x65},
473 		{EM2874_R80_GPIO_P0_CTRL,	0xfb,	0xff,	0x32},
474 		{EM2874_R80_GPIO_P0_CTRL,	0xff,	0xff,	0xb8},
475 		{	-1,			-1,	-1,	-1},
476 	};
477 	static const struct em28xx_reg_seq hauppauge_hvr930c_end[] = {
478 		{EM2874_R80_GPIO_P0_CTRL,	0xef,	0xff,	0x01},
479 		{EM2874_R80_GPIO_P0_CTRL,	0xaf,	0xff,	0x65},
480 		{EM2874_R80_GPIO_P0_CTRL,	0xef,	0xff,	0x76},
481 		{EM2874_R80_GPIO_P0_CTRL,	0xef,	0xff,	0x01},
482 		{EM2874_R80_GPIO_P0_CTRL,	0xcf,	0xff,	0x0b},
483 		{EM2874_R80_GPIO_P0_CTRL,	0xef,	0xff,	0x40},
484 
485 		{EM2874_R80_GPIO_P0_CTRL,	0xcf,	0xff,	0x65},
486 		{EM2874_R80_GPIO_P0_CTRL,	0xef,	0xff,	0x65},
487 		{EM2874_R80_GPIO_P0_CTRL,	0xcf,	0xff,	0x0b},
488 		{EM2874_R80_GPIO_P0_CTRL,	0xef,	0xff,	0x65},
489 
490 		{	-1,			-1,	-1,	-1},
491 	};
492 
493 	static const struct {
494 		unsigned char r[4];
495 		int len;
496 	} regs[] = {
497 		{{ 0x06, 0x02, 0x00, 0x31 }, 4},
498 		{{ 0x01, 0x02 }, 2},
499 		{{ 0x01, 0x02, 0x00, 0xc6 }, 4},
500 		{{ 0x01, 0x00 }, 2},
501 		{{ 0x01, 0x00, 0xff, 0xaf }, 4},
502 		{{ 0x01, 0x00, 0x03, 0xa0 }, 4},
503 		{{ 0x01, 0x00 }, 2},
504 		{{ 0x01, 0x00, 0x73, 0xaf }, 4},
505 		{{ 0x04, 0x00 }, 2},
506 		{{ 0x00, 0x04 }, 2},
507 		{{ 0x00, 0x04, 0x00, 0x0a }, 4},
508 		{{ 0x04, 0x14 }, 2},
509 		{{ 0x04, 0x14, 0x00, 0x00 }, 4},
510 	};
511 
512 	em28xx_gpio_set(dev, hauppauge_hvr930c_init);
513 	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x40);
514 	usleep_range(10000, 11000);
515 	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x44);
516 	usleep_range(10000, 11000);
517 
518 	dev->i2c_client[dev->def_i2c_bus].addr = 0x82 >> 1;
519 
520 	for (i = 0; i < ARRAY_SIZE(regs); i++)
521 		i2c_master_send(&dev->i2c_client[dev->def_i2c_bus],
522 				regs[i].r, regs[i].len);
523 	em28xx_gpio_set(dev, hauppauge_hvr930c_end);
524 
525 	msleep(100);
526 
527 	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x44);
528 	msleep(30);
529 
530 	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x45);
531 	usleep_range(10000, 11000);
532 }
533 
terratec_h5_init(struct em28xx * dev)534 static void terratec_h5_init(struct em28xx *dev)
535 {
536 	int i;
537 	static const struct em28xx_reg_seq terratec_h5_init[] = {
538 		{EM2820_R08_GPIO_CTRL,		0xff,	0xff,	10},
539 		{EM2874_R80_GPIO_P0_CTRL,	0xf6,	0xff,	100},
540 		{EM2874_R80_GPIO_P0_CTRL,	0xf2,	0xff,	50},
541 		{EM2874_R80_GPIO_P0_CTRL,	0xf6,	0xff,	100},
542 		{	-1,			-1,	-1,	-1},
543 	};
544 	static const struct em28xx_reg_seq terratec_h5_end[] = {
545 		{EM2874_R80_GPIO_P0_CTRL,	0xe6,	0xff,	100},
546 		{EM2874_R80_GPIO_P0_CTRL,	0xa6,	0xff,	50},
547 		{EM2874_R80_GPIO_P0_CTRL,	0xe6,	0xff,	100},
548 		{	-1,			-1,	-1,	-1},
549 	};
550 	static const struct {
551 		unsigned char r[4];
552 		int len;
553 	} regs[] = {
554 		{{ 0x06, 0x02, 0x00, 0x31 }, 4},
555 		{{ 0x01, 0x02 }, 2},
556 		{{ 0x01, 0x02, 0x00, 0xc6 }, 4},
557 		{{ 0x01, 0x00 }, 2},
558 		{{ 0x01, 0x00, 0xff, 0xaf }, 4},
559 		{{ 0x01, 0x00, 0x03, 0xa0 }, 4},
560 		{{ 0x01, 0x00 }, 2},
561 		{{ 0x01, 0x00, 0x73, 0xaf }, 4},
562 		{{ 0x04, 0x00 }, 2},
563 		{{ 0x00, 0x04 }, 2},
564 		{{ 0x00, 0x04, 0x00, 0x0a }, 4},
565 		{{ 0x04, 0x14 }, 2},
566 		{{ 0x04, 0x14, 0x00, 0x00 }, 4},
567 	};
568 
569 	em28xx_gpio_set(dev, terratec_h5_init);
570 	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x40);
571 	usleep_range(10000, 11000);
572 	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x45);
573 	usleep_range(10000, 11000);
574 
575 	dev->i2c_client[dev->def_i2c_bus].addr = 0x82 >> 1;
576 
577 	for (i = 0; i < ARRAY_SIZE(regs); i++)
578 		i2c_master_send(&dev->i2c_client[dev->def_i2c_bus],
579 				regs[i].r, regs[i].len);
580 	em28xx_gpio_set(dev, terratec_h5_end);
581 };
582 
terratec_htc_stick_init(struct em28xx * dev)583 static void terratec_htc_stick_init(struct em28xx *dev)
584 {
585 	int i;
586 
587 	/*
588 	 * GPIO configuration:
589 	 * 0xff: unknown (does not affect DVB-T).
590 	 * 0xf6: DRX-K (demodulator).
591 	 * 0xe6: unknown (does not affect DVB-T).
592 	 * 0xb6: unknown (does not affect DVB-T).
593 	 */
594 	static const struct em28xx_reg_seq terratec_htc_stick_init[] = {
595 		{EM2820_R08_GPIO_CTRL,		0xff,	0xff,	10},
596 		{EM2874_R80_GPIO_P0_CTRL,	0xf6,	0xff,	100},
597 		{EM2874_R80_GPIO_P0_CTRL,	0xe6,	0xff,	50},
598 		{EM2874_R80_GPIO_P0_CTRL,	0xf6,	0xff,	100},
599 		{	-1,			-1,	-1,	-1},
600 	};
601 	static const struct em28xx_reg_seq terratec_htc_stick_end[] = {
602 		{EM2874_R80_GPIO_P0_CTRL,	0xb6,	0xff,	100},
603 		{EM2874_R80_GPIO_P0_CTRL,	0xf6,	0xff,	50},
604 		{	-1,			-1,	-1,	-1},
605 	};
606 
607 	/*
608 	 * Init the analog decoder (not yet supported), but
609 	 * it's probably still a good idea.
610 	 */
611 	static const struct {
612 		unsigned char r[4];
613 		int len;
614 	} regs[] = {
615 		{{ 0x06, 0x02, 0x00, 0x31 }, 4},
616 		{{ 0x01, 0x02 }, 2},
617 		{{ 0x01, 0x02, 0x00, 0xc6 }, 4},
618 		{{ 0x01, 0x00 }, 2},
619 		{{ 0x01, 0x00, 0xff, 0xaf }, 4},
620 	};
621 
622 	em28xx_gpio_set(dev, terratec_htc_stick_init);
623 
624 	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x40);
625 	usleep_range(10000, 11000);
626 	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x44);
627 	usleep_range(10000, 11000);
628 
629 	dev->i2c_client[dev->def_i2c_bus].addr = 0x82 >> 1;
630 
631 	for (i = 0; i < ARRAY_SIZE(regs); i++)
632 		i2c_master_send(&dev->i2c_client[dev->def_i2c_bus],
633 				regs[i].r, regs[i].len);
634 
635 	em28xx_gpio_set(dev, terratec_htc_stick_end);
636 };
637 
terratec_htc_usb_xs_init(struct em28xx * dev)638 static void terratec_htc_usb_xs_init(struct em28xx *dev)
639 {
640 	int i;
641 
642 	static const struct em28xx_reg_seq terratec_htc_usb_xs_init[] = {
643 		{EM2820_R08_GPIO_CTRL,		0xff,	0xff,	10},
644 		{EM2874_R80_GPIO_P0_CTRL,	0xb2,	0xff,	100},
645 		{EM2874_R80_GPIO_P0_CTRL,	0xb2,	0xff,	50},
646 		{EM2874_R80_GPIO_P0_CTRL,	0xb6,	0xff,	100},
647 		{	-1,			-1,	-1,	-1},
648 	};
649 	static const struct em28xx_reg_seq terratec_htc_usb_xs_end[] = {
650 		{EM2874_R80_GPIO_P0_CTRL,	0xa6,	0xff,	100},
651 		{EM2874_R80_GPIO_P0_CTRL,	0xa6,	0xff,	50},
652 		{EM2874_R80_GPIO_P0_CTRL,	0xe6,	0xff,	100},
653 		{	-1,			-1,	-1,	-1},
654 	};
655 
656 	/*
657 	 * Init the analog decoder (not yet supported), but
658 	 * it's probably still a good idea.
659 	 */
660 	static const struct {
661 		unsigned char r[4];
662 		int len;
663 	} regs[] = {
664 		{{ 0x06, 0x02, 0x00, 0x31 }, 4},
665 		{{ 0x01, 0x02 }, 2},
666 		{{ 0x01, 0x02, 0x00, 0xc6 }, 4},
667 		{{ 0x01, 0x00 }, 2},
668 		{{ 0x01, 0x00, 0xff, 0xaf }, 4},
669 		{{ 0x01, 0x00, 0x03, 0xa0 }, 4},
670 		{{ 0x01, 0x00 }, 2},
671 		{{ 0x01, 0x00, 0x73, 0xaf }, 4},
672 		{{ 0x04, 0x00 }, 2},
673 		{{ 0x00, 0x04 }, 2},
674 		{{ 0x00, 0x04, 0x00, 0x0a }, 4},
675 		{{ 0x04, 0x14 }, 2},
676 		{{ 0x04, 0x14, 0x00, 0x00 }, 4},
677 	};
678 
679 	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x40);
680 
681 	em28xx_gpio_set(dev, terratec_htc_usb_xs_init);
682 
683 	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x40);
684 	usleep_range(10000, 11000);
685 	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x44);
686 	usleep_range(10000, 11000);
687 
688 	dev->i2c_client[dev->def_i2c_bus].addr = 0x82 >> 1;
689 
690 	for (i = 0; i < ARRAY_SIZE(regs); i++)
691 		i2c_master_send(&dev->i2c_client[dev->def_i2c_bus],
692 				regs[i].r, regs[i].len);
693 
694 	em28xx_gpio_set(dev, terratec_htc_usb_xs_end);
695 };
696 
pctv_520e_init(struct em28xx * dev)697 static void pctv_520e_init(struct em28xx *dev)
698 {
699 	/*
700 	 * Init AVF4910B analog decoder. Looks like I2C traffic to
701 	 * digital demodulator and tuner are routed via AVF4910B.
702 	 */
703 	int i;
704 	static const struct {
705 		unsigned char r[4];
706 		int len;
707 	} regs[] = {
708 		{{ 0x06, 0x02, 0x00, 0x31 }, 4},
709 		{{ 0x01, 0x02 }, 2},
710 		{{ 0x01, 0x02, 0x00, 0xc6 }, 4},
711 		{{ 0x01, 0x00 }, 2},
712 		{{ 0x01, 0x00, 0xff, 0xaf }, 4},
713 		{{ 0x01, 0x00, 0x03, 0xa0 }, 4},
714 		{{ 0x01, 0x00 }, 2},
715 		{{ 0x01, 0x00, 0x73, 0xaf }, 4},
716 	};
717 
718 	dev->i2c_client[dev->def_i2c_bus].addr = 0x82 >> 1; /* 0x41 */
719 
720 	for (i = 0; i < ARRAY_SIZE(regs); i++)
721 		i2c_master_send(&dev->i2c_client[dev->def_i2c_bus],
722 				regs[i].r, regs[i].len);
723 };
724 
em28xx_pctv_290e_set_lna(struct dvb_frontend * fe)725 static int em28xx_pctv_290e_set_lna(struct dvb_frontend *fe)
726 {
727 	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
728 	struct em28xx_i2c_bus *i2c_bus = fe->dvb->priv;
729 	struct em28xx *dev = i2c_bus->dev;
730 #ifdef CONFIG_GPIOLIB
731 	struct em28xx_dvb *dvb = dev->dvb;
732 	int ret;
733 	unsigned long flags;
734 
735 	if (c->lna == 1)
736 		flags = GPIOF_OUT_INIT_HIGH; /* enable LNA */
737 	else
738 		flags = GPIOF_OUT_INIT_LOW; /* disable LNA */
739 
740 	ret = gpio_request_one(dvb->lna_gpio, flags, NULL);
741 	if (ret)
742 		dev_err(&dev->intf->dev, "gpio request failed %d\n", ret);
743 	else
744 		gpio_free(dvb->lna_gpio);
745 
746 	return ret;
747 #else
748 	dev_warn(&dev->intf->dev, "%s: LNA control is disabled (lna=%u)\n",
749 		 KBUILD_MODNAME, c->lna);
750 	return 0;
751 #endif
752 }
753 
em28xx_pctv_292e_set_lna(struct dvb_frontend * fe)754 static int em28xx_pctv_292e_set_lna(struct dvb_frontend *fe)
755 {
756 	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
757 	struct em28xx_i2c_bus *i2c_bus = fe->dvb->priv;
758 	struct em28xx *dev = i2c_bus->dev;
759 	u8 lna;
760 
761 	if (c->lna == 1)
762 		lna = 0x01;
763 	else
764 		lna = 0x00;
765 
766 	return em28xx_write_reg_bits(dev, EM2874_R80_GPIO_P0_CTRL, lna, 0x01);
767 }
768 
em28xx_mt352_terratec_xs_init(struct dvb_frontend * fe)769 static int em28xx_mt352_terratec_xs_init(struct dvb_frontend *fe)
770 {
771 	/* Values extracted from a USB trace of the Terratec Windows driver */
772 	static u8 clock_config[]   = { CLOCK_CTL,  0x38, 0x2c };
773 	static u8 reset[]          = { RESET,      0x80 };
774 	static u8 adc_ctl_1_cfg[]  = { ADC_CTL_1,  0x40 };
775 	static u8 agc_cfg[]        = { AGC_TARGET, 0x28, 0xa0 };
776 	static u8 input_freq_cfg[] = { INPUT_FREQ_1, 0x31, 0xb8 };
777 	static u8 rs_err_cfg[]     = { RS_ERR_PER_1, 0x00, 0x4d };
778 	static u8 capt_range_cfg[] = { CAPT_RANGE, 0x32 };
779 	static u8 trl_nom_cfg[]    = { TRL_NOMINAL_RATE_1, 0x64, 0x00 };
780 	static u8 tps_given_cfg[]  = { TPS_GIVEN_1, 0x40, 0x80, 0x50 };
781 	static u8 tuner_go[]       = { TUNER_GO, 0x01};
782 
783 	mt352_write(fe, clock_config,   sizeof(clock_config));
784 	usleep_range(200, 250);
785 	mt352_write(fe, reset,          sizeof(reset));
786 	mt352_write(fe, adc_ctl_1_cfg,  sizeof(adc_ctl_1_cfg));
787 	mt352_write(fe, agc_cfg,        sizeof(agc_cfg));
788 	mt352_write(fe, input_freq_cfg, sizeof(input_freq_cfg));
789 	mt352_write(fe, rs_err_cfg,     sizeof(rs_err_cfg));
790 	mt352_write(fe, capt_range_cfg, sizeof(capt_range_cfg));
791 	mt352_write(fe, trl_nom_cfg,    sizeof(trl_nom_cfg));
792 	mt352_write(fe, tps_given_cfg,  sizeof(tps_given_cfg));
793 	mt352_write(fe, tuner_go,       sizeof(tuner_go));
794 	return 0;
795 }
796 
px_bcud_init(struct em28xx * dev)797 static void px_bcud_init(struct em28xx *dev)
798 {
799 	int i;
800 	static const struct {
801 		unsigned char r[4];
802 		int len;
803 	} regs1[] = {
804 		{{ 0x0e, 0x77 }, 2},
805 		{{ 0x0f, 0x77 }, 2},
806 		{{ 0x03, 0x90 }, 2},
807 	}, regs2[] = {
808 		{{ 0x07, 0x01 }, 2},
809 		{{ 0x08, 0x10 }, 2},
810 		{{ 0x13, 0x00 }, 2},
811 		{{ 0x17, 0x00 }, 2},
812 		{{ 0x03, 0x01 }, 2},
813 		{{ 0x10, 0xb1 }, 2},
814 		{{ 0x11, 0x40 }, 2},
815 		{{ 0x85, 0x7a }, 2},
816 		{{ 0x87, 0x04 }, 2},
817 	};
818 	static const struct em28xx_reg_seq gpio[] = {
819 		{EM28XX_R06_I2C_CLK,		0x40,	0xff,	300},
820 		{EM2874_R80_GPIO_P0_CTRL,	0xfd,	0xff,	60},
821 		{EM28XX_R15_RGAIN,		0x20,	0xff,	0},
822 		{EM28XX_R16_GGAIN,		0x20,	0xff,	0},
823 		{EM28XX_R17_BGAIN,		0x20,	0xff,	0},
824 		{EM28XX_R18_ROFFSET,		0x00,	0xff,	0},
825 		{EM28XX_R19_GOFFSET,		0x00,	0xff,	0},
826 		{EM28XX_R1A_BOFFSET,		0x00,	0xff,	0},
827 		{EM28XX_R23_UOFFSET,		0x00,	0xff,	0},
828 		{EM28XX_R24_VOFFSET,		0x00,	0xff,	0},
829 		{EM28XX_R26_COMPR,		0x00,	0xff,	0},
830 		{0x13,				0x08,	0xff,	0},
831 		{EM28XX_R12_VINENABLE,		0x27,	0xff,	0},
832 		{EM28XX_R0C_USBSUSP,		0x10,	0xff,	0},
833 		{EM28XX_R27_OUTFMT,		0x00,	0xff,	0},
834 		{EM28XX_R10_VINMODE,		0x00,	0xff,	0},
835 		{EM28XX_R11_VINCTRL,		0x11,	0xff,	0},
836 		{EM2874_R50_IR_CONFIG,		0x01,	0xff,	0},
837 		{EM2874_R5F_TS_ENABLE,		0x80,	0xff,	0},
838 		{EM28XX_R06_I2C_CLK,		0x46,	0xff,	0},
839 	};
840 	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x46);
841 	/* sleeping ISDB-T */
842 	dev->dvb->i2c_client_demod->addr = 0x14;
843 	for (i = 0; i < ARRAY_SIZE(regs1); i++)
844 		i2c_master_send(dev->dvb->i2c_client_demod,
845 				regs1[i].r, regs1[i].len);
846 	/* sleeping ISDB-S */
847 	dev->dvb->i2c_client_demod->addr = 0x15;
848 	for (i = 0; i < ARRAY_SIZE(regs2); i++)
849 		i2c_master_send(dev->dvb->i2c_client_demod, regs2[i].r,
850 				regs2[i].len);
851 	for (i = 0; i < ARRAY_SIZE(gpio); i++) {
852 		em28xx_write_reg_bits(dev, gpio[i].reg, gpio[i].val,
853 				      gpio[i].mask);
854 		if (gpio[i].sleep > 0)
855 			msleep(gpio[i].sleep);
856 	}
857 };
858 
859 static struct mt352_config terratec_xs_mt352_cfg = {
860 	.demod_address = (0x1e >> 1),
861 	.no_tuner = 1,
862 	.if2 = 45600,
863 	.demod_init = em28xx_mt352_terratec_xs_init,
864 };
865 
866 static struct tda10023_config em28xx_tda10023_config = {
867 	.demod_address = 0x0c,
868 	.invert = 1,
869 };
870 
871 static struct cxd2820r_config em28xx_cxd2820r_config = {
872 	.i2c_address = (0xd8 >> 1),
873 	.ts_mode = CXD2820R_TS_SERIAL,
874 };
875 
876 static struct tda18271_config em28xx_cxd2820r_tda18271_config = {
877 	.output_opt = TDA18271_OUTPUT_LT_OFF,
878 	.gate = TDA18271_GATE_DIGITAL,
879 };
880 
881 static struct zl10353_config em28xx_zl10353_no_i2c_gate_dev = {
882 	.demod_address = (0x1e >> 1),
883 	.disable_i2c_gate_ctrl = 1,
884 	.no_tuner = 1,
885 	.parallel_ts = 1,
886 };
887 
888 static struct mt2060_config em28xx_mt2060_config = {
889 	.i2c_address = 0x60,
890 };
891 
892 static struct qt1010_config em28xx_qt1010_config = {
893 	.i2c_address = 0x62
894 };
895 
896 static const struct mb86a20s_config c3tech_duo_mb86a20s_config = {
897 	.demod_address = 0x10,
898 	.is_serial = true,
899 };
900 
901 static struct tda18271_std_map mb86a20s_tda18271_config = {
902 	.dvbt_6   = { .if_freq = 4000, .agc_mode = 3, .std = 4,
903 		      .if_lvl = 1, .rfagc_top = 0x37, },
904 };
905 
906 static struct tda18271_config c3tech_duo_tda18271_config = {
907 	.std_map = &mb86a20s_tda18271_config,
908 	.gate    = TDA18271_GATE_DIGITAL,
909 	.small_i2c = TDA18271_03_BYTE_CHUNK_INIT,
910 };
911 
912 static struct tda18271_std_map drx_j_std_map = {
913 	.atsc_6   = { .if_freq = 5000, .agc_mode = 3, .std = 0, .if_lvl = 1,
914 		      .rfagc_top = 0x37, },
915 	.qam_6    = { .if_freq = 5380, .agc_mode = 3, .std = 3, .if_lvl = 1,
916 		      .rfagc_top = 0x37, },
917 };
918 
919 static struct tda18271_config pinnacle_80e_dvb_config = {
920 	.std_map = &drx_j_std_map,
921 	.gate    = TDA18271_GATE_DIGITAL,
922 	.role    = TDA18271_MASTER,
923 };
924 
925 static struct lgdt3306a_config hauppauge_01595_lgdt3306a_config = {
926 	.qam_if_khz         = 4000,
927 	.vsb_if_khz         = 3250,
928 	.spectral_inversion = 0,
929 	.deny_i2c_rptr      = 0,
930 	.mpeg_mode          = LGDT3306A_MPEG_SERIAL,
931 	.tpclk_edge         = LGDT3306A_TPCLK_RISING_EDGE,
932 	.tpvalid_polarity   = LGDT3306A_TP_VALID_HIGH,
933 	.xtalMHz            = 25,
934 };
935 
936 /* ------------------------------------------------------------------ */
937 
em28xx_attach_xc3028(u8 addr,struct em28xx * dev)938 static noinline_for_stack int em28xx_attach_xc3028(u8 addr, struct em28xx *dev)
939 {
940 	struct dvb_frontend *fe;
941 	struct xc2028_config cfg;
942 	struct xc2028_ctrl ctl;
943 
944 	memset(&cfg, 0, sizeof(cfg));
945 	cfg.i2c_adap  = &dev->i2c_adap[dev->def_i2c_bus];
946 	cfg.i2c_addr  = addr;
947 
948 	memset(&ctl, 0, sizeof(ctl));
949 	em28xx_setup_xc3028(dev, &ctl);
950 	cfg.ctrl  = &ctl;
951 
952 	if (!dev->dvb->fe[0]) {
953 		dev_err(&dev->intf->dev,
954 			"dvb frontend not attached. Can't attach xc3028\n");
955 		return -EINVAL;
956 	}
957 
958 	fe = dvb_attach(xc2028_attach, dev->dvb->fe[0], &cfg);
959 	if (!fe) {
960 		dev_err(&dev->intf->dev, "xc3028 attach failed\n");
961 		dvb_frontend_detach(dev->dvb->fe[0]);
962 		dev->dvb->fe[0] = NULL;
963 		return -EINVAL;
964 	}
965 
966 	dev_info(&dev->intf->dev, "xc3028 attached\n");
967 
968 	return 0;
969 }
970 
971 /* ------------------------------------------------------------------ */
972 
em28xx_register_dvb(struct em28xx_dvb * dvb,struct module * module,struct em28xx * dev,struct device * device)973 static int em28xx_register_dvb(struct em28xx_dvb *dvb, struct module *module,
974 			       struct em28xx *dev, struct device *device)
975 {
976 	int result;
977 	bool create_rf_connector = false;
978 
979 	mutex_init(&dvb->lock);
980 
981 	/* register adapter */
982 	result = dvb_register_adapter(&dvb->adapter,
983 				      dev_name(&dev->intf->dev), module,
984 				      device, adapter_nr);
985 	if (result < 0) {
986 		dev_warn(&dev->intf->dev,
987 			 "dvb_register_adapter failed (errno = %d)\n",
988 			 result);
989 		goto fail_adapter;
990 	}
991 #ifdef CONFIG_MEDIA_CONTROLLER_DVB
992 	dvb->adapter.mdev = dev->media_dev;
993 #endif
994 
995 	/* Ensure all frontends negotiate bus access */
996 	dvb->fe[0]->ops.ts_bus_ctrl = em28xx_dvb_bus_ctrl;
997 	if (dvb->fe[1])
998 		dvb->fe[1]->ops.ts_bus_ctrl = em28xx_dvb_bus_ctrl;
999 
1000 	dvb->adapter.priv = &dev->i2c_bus[dev->def_i2c_bus];
1001 
1002 	/* register frontend */
1003 	result = dvb_register_frontend(&dvb->adapter, dvb->fe[0]);
1004 	if (result < 0) {
1005 		dev_warn(&dev->intf->dev,
1006 			 "dvb_register_frontend failed (errno = %d)\n",
1007 			 result);
1008 		goto fail_frontend0;
1009 	}
1010 
1011 	/* register 2nd frontend */
1012 	if (dvb->fe[1]) {
1013 		result = dvb_register_frontend(&dvb->adapter, dvb->fe[1]);
1014 		if (result < 0) {
1015 			dev_warn(&dev->intf->dev,
1016 				 "2nd dvb_register_frontend failed (errno = %d)\n",
1017 				 result);
1018 			goto fail_frontend1;
1019 		}
1020 	}
1021 
1022 	/* register demux stuff */
1023 	dvb->demux.dmx.capabilities =
1024 		DMX_TS_FILTERING | DMX_SECTION_FILTERING |
1025 		DMX_MEMORY_BASED_FILTERING;
1026 	dvb->demux.priv       = dvb;
1027 	dvb->demux.filternum  = 256;
1028 	dvb->demux.feednum    = 256;
1029 	dvb->demux.start_feed = em28xx_start_feed;
1030 	dvb->demux.stop_feed  = em28xx_stop_feed;
1031 
1032 	result = dvb_dmx_init(&dvb->demux);
1033 	if (result < 0) {
1034 		dev_warn(&dev->intf->dev,
1035 			 "dvb_dmx_init failed (errno = %d)\n",
1036 			 result);
1037 		goto fail_dmx;
1038 	}
1039 
1040 	dvb->dmxdev.filternum    = 256;
1041 	dvb->dmxdev.demux        = &dvb->demux.dmx;
1042 	dvb->dmxdev.capabilities = 0;
1043 	result = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter);
1044 	if (result < 0) {
1045 		dev_warn(&dev->intf->dev,
1046 			 "dvb_dmxdev_init failed (errno = %d)\n",
1047 			 result);
1048 		goto fail_dmxdev;
1049 	}
1050 
1051 	dvb->fe_hw.source = DMX_FRONTEND_0;
1052 	result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_hw);
1053 	if (result < 0) {
1054 		dev_warn(&dev->intf->dev,
1055 			 "add_frontend failed (DMX_FRONTEND_0, errno = %d)\n",
1056 			 result);
1057 		goto fail_fe_hw;
1058 	}
1059 
1060 	dvb->fe_mem.source = DMX_MEMORY_FE;
1061 	result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_mem);
1062 	if (result < 0) {
1063 		dev_warn(&dev->intf->dev,
1064 			 "add_frontend failed (DMX_MEMORY_FE, errno = %d)\n",
1065 			 result);
1066 		goto fail_fe_mem;
1067 	}
1068 
1069 	result = dvb->demux.dmx.connect_frontend(&dvb->demux.dmx, &dvb->fe_hw);
1070 	if (result < 0) {
1071 		dev_warn(&dev->intf->dev,
1072 			 "connect_frontend failed (errno = %d)\n",
1073 			 result);
1074 		goto fail_fe_conn;
1075 	}
1076 
1077 	/* register network adapter */
1078 	dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx);
1079 
1080 	/* If the analog part won't create RF connectors, DVB will do it */
1081 	if (!dev->has_video || dev->tuner_type == TUNER_ABSENT)
1082 		create_rf_connector = true;
1083 
1084 	result = dvb_create_media_graph(&dvb->adapter, create_rf_connector);
1085 	if (result < 0)
1086 		goto fail_create_graph;
1087 
1088 	return 0;
1089 
1090 fail_create_graph:
1091 	dvb_net_release(&dvb->net);
1092 fail_fe_conn:
1093 	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
1094 fail_fe_mem:
1095 	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
1096 fail_fe_hw:
1097 	dvb_dmxdev_release(&dvb->dmxdev);
1098 fail_dmxdev:
1099 	dvb_dmx_release(&dvb->demux);
1100 fail_dmx:
1101 	if (dvb->fe[1])
1102 		dvb_unregister_frontend(dvb->fe[1]);
1103 	dvb_unregister_frontend(dvb->fe[0]);
1104 fail_frontend1:
1105 	if (dvb->fe[1])
1106 		dvb_frontend_detach(dvb->fe[1]);
1107 fail_frontend0:
1108 	dvb_frontend_detach(dvb->fe[0]);
1109 	dvb_unregister_adapter(&dvb->adapter);
1110 fail_adapter:
1111 	return result;
1112 }
1113 
em28xx_unregister_dvb(struct em28xx_dvb * dvb)1114 static void em28xx_unregister_dvb(struct em28xx_dvb *dvb)
1115 {
1116 	dvb_net_release(&dvb->net);
1117 	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
1118 	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
1119 	dvb_dmxdev_release(&dvb->dmxdev);
1120 	dvb_dmx_release(&dvb->demux);
1121 	if (dvb->fe[1])
1122 		dvb_unregister_frontend(dvb->fe[1]);
1123 	dvb_unregister_frontend(dvb->fe[0]);
1124 	if (dvb->fe[1] && !dvb->dont_attach_fe1)
1125 		dvb_frontend_detach(dvb->fe[1]);
1126 	dvb_frontend_detach(dvb->fe[0]);
1127 	dvb_unregister_adapter(&dvb->adapter);
1128 }
1129 
em28174_dvb_init_pctv_460e(struct em28xx * dev)1130 static int em28174_dvb_init_pctv_460e(struct em28xx *dev)
1131 {
1132 	struct em28xx_dvb *dvb = dev->dvb;
1133 	struct tda10071_platform_data tda10071_pdata = {};
1134 	struct a8293_platform_data a8293_pdata = {};
1135 
1136 	/* attach demod + tuner combo */
1137 	tda10071_pdata.clk = 40444000; /* 40.444 MHz */
1138 	tda10071_pdata.i2c_wr_max = 64;
1139 	tda10071_pdata.ts_mode = TDA10071_TS_SERIAL;
1140 	tda10071_pdata.pll_multiplier = 20;
1141 	tda10071_pdata.tuner_i2c_addr = 0x14;
1142 
1143 	dvb->i2c_client_demod = dvb_module_probe("tda10071", "tda10071_cx24118",
1144 						 &dev->i2c_adap[dev->def_i2c_bus],
1145 						 0x55, &tda10071_pdata);
1146 	if (!dvb->i2c_client_demod)
1147 		return -ENODEV;
1148 
1149 	dvb->fe[0] = tda10071_pdata.get_dvb_frontend(dvb->i2c_client_demod);
1150 
1151 	/* attach SEC */
1152 	a8293_pdata.dvb_frontend = dvb->fe[0];
1153 
1154 	dvb->i2c_client_sec = dvb_module_probe("a8293", NULL,
1155 					       &dev->i2c_adap[dev->def_i2c_bus],
1156 					       0x08, &a8293_pdata);
1157 	if (!dvb->i2c_client_sec) {
1158 		dvb_module_release(dvb->i2c_client_demod);
1159 		return -ENODEV;
1160 	}
1161 
1162 	return 0;
1163 }
1164 
em28178_dvb_init_pctv_461e(struct em28xx * dev)1165 static int em28178_dvb_init_pctv_461e(struct em28xx *dev)
1166 {
1167 	struct em28xx_dvb *dvb = dev->dvb;
1168 	struct i2c_adapter *i2c_adapter;
1169 	struct m88ds3103_platform_data m88ds3103_pdata = {};
1170 	struct ts2020_config ts2020_config = {};
1171 	struct a8293_platform_data a8293_pdata = {};
1172 
1173 	/* attach demod */
1174 	m88ds3103_pdata.clk = 27000000;
1175 	m88ds3103_pdata.i2c_wr_max = 33;
1176 	m88ds3103_pdata.ts_mode = M88DS3103_TS_PARALLEL;
1177 	m88ds3103_pdata.ts_clk = 16000;
1178 	m88ds3103_pdata.ts_clk_pol = 1;
1179 	m88ds3103_pdata.agc = 0x99;
1180 
1181 	dvb->i2c_client_demod = dvb_module_probe("m88ds3103", NULL,
1182 						 &dev->i2c_adap[dev->def_i2c_bus],
1183 						 0x68, &m88ds3103_pdata);
1184 	if (!dvb->i2c_client_demod)
1185 		return -ENODEV;
1186 
1187 	dvb->fe[0] = m88ds3103_pdata.get_dvb_frontend(dvb->i2c_client_demod);
1188 	i2c_adapter = m88ds3103_pdata.get_i2c_adapter(dvb->i2c_client_demod);
1189 
1190 	/* attach tuner */
1191 	ts2020_config.fe = dvb->fe[0];
1192 
1193 	dvb->i2c_client_tuner = dvb_module_probe("ts2020", "ts2022",
1194 						 i2c_adapter,
1195 						 0x60, &ts2020_config);
1196 	if (!dvb->i2c_client_tuner) {
1197 		dvb_module_release(dvb->i2c_client_demod);
1198 		return -ENODEV;
1199 	}
1200 
1201 	/* delegate signal strength measurement to tuner */
1202 	dvb->fe[0]->ops.read_signal_strength =
1203 			dvb->fe[0]->ops.tuner_ops.get_rf_strength;
1204 
1205 	/* attach SEC */
1206 	a8293_pdata.dvb_frontend = dvb->fe[0];
1207 	/*
1208 	 * 461e has a tendency to have vIN undervoltage troubles.
1209 	 * Slew mitigates this.
1210 	 */
1211 	a8293_pdata.volt_slew_nanos_per_mv = 20;
1212 
1213 	dvb->i2c_client_sec = dvb_module_probe("a8293", NULL,
1214 					       &dev->i2c_adap[dev->def_i2c_bus],
1215 					       0x08, &a8293_pdata);
1216 	if (!dvb->i2c_client_sec) {
1217 		dvb_module_release(dvb->i2c_client_tuner);
1218 		dvb_module_release(dvb->i2c_client_demod);
1219 		return -ENODEV;
1220 	}
1221 
1222 	return 0;
1223 }
1224 
em28178_dvb_init_pctv_461e_v2(struct em28xx * dev)1225 static int em28178_dvb_init_pctv_461e_v2(struct em28xx *dev)
1226 {
1227 	struct em28xx_dvb *dvb = dev->dvb;
1228 	struct i2c_adapter *i2c_adapter;
1229 	struct m88ds3103_platform_data m88ds3103_pdata = {};
1230 	struct ts2020_config ts2020_config = {};
1231 	struct a8293_platform_data a8293_pdata = {};
1232 
1233 	/* attach demod */
1234 	m88ds3103_pdata.clk = 27000000;
1235 	m88ds3103_pdata.i2c_wr_max = 33;
1236 	m88ds3103_pdata.ts_mode = M88DS3103_TS_PARALLEL;
1237 	m88ds3103_pdata.ts_clk = 16000;
1238 	m88ds3103_pdata.ts_clk_pol = 0;
1239 	m88ds3103_pdata.agc = 0x99;
1240 	m88ds3103_pdata.agc_inv = 0;
1241 	m88ds3103_pdata.spec_inv = 0;
1242 	dvb->i2c_client_demod = dvb_module_probe("m88ds3103", "m88ds3103b",
1243 						 &dev->i2c_adap[dev->def_i2c_bus],
1244 						 0x6a, &m88ds3103_pdata);
1245 
1246 	if (!dvb->i2c_client_demod)
1247 		return -ENODEV;
1248 
1249 	dvb->fe[0] = m88ds3103_pdata.get_dvb_frontend(dvb->i2c_client_demod);
1250 	i2c_adapter = m88ds3103_pdata.get_i2c_adapter(dvb->i2c_client_demod);
1251 
1252 	/* attach tuner */
1253 	ts2020_config.fe = dvb->fe[0];
1254 	dvb->i2c_client_tuner = dvb_module_probe("ts2020", "ts2022",
1255 						 i2c_adapter,
1256 						 0x60, &ts2020_config);
1257 	if (!dvb->i2c_client_tuner) {
1258 		dvb_module_release(dvb->i2c_client_demod);
1259 		return -ENODEV;
1260 	}
1261 
1262 	/* delegate signal strength measurement to tuner */
1263 	dvb->fe[0]->ops.read_signal_strength =
1264 			dvb->fe[0]->ops.tuner_ops.get_rf_strength;
1265 
1266 	/* attach SEC */
1267 	a8293_pdata.dvb_frontend = dvb->fe[0];
1268 	dvb->i2c_client_sec = dvb_module_probe("a8293", NULL,
1269 					       &dev->i2c_adap[dev->def_i2c_bus],
1270 					       0x08, &a8293_pdata);
1271 	if (!dvb->i2c_client_sec) {
1272 		dvb_module_release(dvb->i2c_client_tuner);
1273 		dvb_module_release(dvb->i2c_client_demod);
1274 		return -ENODEV;
1275 	}
1276 
1277 	return 0;
1278 }
1279 
em28178_dvb_init_pctv_292e(struct em28xx * dev)1280 static int em28178_dvb_init_pctv_292e(struct em28xx *dev)
1281 {
1282 	struct em28xx_dvb *dvb = dev->dvb;
1283 	struct i2c_adapter *adapter;
1284 	struct si2168_config si2168_config = {};
1285 	struct si2157_config si2157_config = {};
1286 
1287 	/* attach demod */
1288 	si2168_config.i2c_adapter = &adapter;
1289 	si2168_config.fe = &dvb->fe[0];
1290 	si2168_config.ts_mode = SI2168_TS_PARALLEL;
1291 	si2168_config.spectral_inversion = true;
1292 
1293 	dvb->i2c_client_demod = dvb_module_probe("si2168", NULL,
1294 						 &dev->i2c_adap[dev->def_i2c_bus],
1295 						 0x64, &si2168_config);
1296 	if (!dvb->i2c_client_demod)
1297 		return -ENODEV;
1298 
1299 	/* attach tuner */
1300 	si2157_config.fe = dvb->fe[0];
1301 	si2157_config.if_port = 1;
1302 #ifdef CONFIG_MEDIA_CONTROLLER_DVB
1303 	si2157_config.mdev = dev->media_dev;
1304 #endif
1305 	dvb->i2c_client_tuner = dvb_module_probe("si2157", NULL,
1306 						 adapter,
1307 						 0x60, &si2157_config);
1308 	if (!dvb->i2c_client_tuner) {
1309 		dvb_module_release(dvb->i2c_client_demod);
1310 		return -ENODEV;
1311 	}
1312 	dvb->fe[0]->ops.set_lna = em28xx_pctv_292e_set_lna;
1313 
1314 	return 0;
1315 }
1316 
em28178_dvb_init_terratec_t2_stick_hd(struct em28xx * dev)1317 static int em28178_dvb_init_terratec_t2_stick_hd(struct em28xx *dev)
1318 {
1319 	struct em28xx_dvb *dvb = dev->dvb;
1320 	struct i2c_adapter *adapter;
1321 	struct si2168_config si2168_config = {};
1322 	struct si2157_config si2157_config = {};
1323 
1324 	/* attach demod */
1325 	si2168_config.i2c_adapter = &adapter;
1326 	si2168_config.fe = &dvb->fe[0];
1327 	si2168_config.ts_mode = SI2168_TS_PARALLEL;
1328 
1329 	dvb->i2c_client_demod = dvb_module_probe("si2168", NULL,
1330 						 &dev->i2c_adap[dev->def_i2c_bus],
1331 						 0x64, &si2168_config);
1332 	if (!dvb->i2c_client_demod)
1333 		return -ENODEV;
1334 
1335 	/* attach tuner */
1336 	memset(&si2157_config, 0, sizeof(si2157_config));
1337 	si2157_config.fe = dvb->fe[0];
1338 	si2157_config.if_port = 0;
1339 #ifdef CONFIG_MEDIA_CONTROLLER_DVB
1340 	si2157_config.mdev = dev->media_dev;
1341 #endif
1342 	dvb->i2c_client_tuner = dvb_module_probe("si2157", "si2146",
1343 						 adapter,
1344 						 0x60, &si2157_config);
1345 	if (!dvb->i2c_client_tuner) {
1346 		dvb_module_release(dvb->i2c_client_demod);
1347 		return -ENODEV;
1348 	}
1349 
1350 	return 0;
1351 }
1352 
em28178_dvb_init_plex_px_bcud(struct em28xx * dev)1353 static int em28178_dvb_init_plex_px_bcud(struct em28xx *dev)
1354 {
1355 	struct em28xx_dvb *dvb = dev->dvb;
1356 	struct tc90522_config tc90522_config = {};
1357 	struct qm1d1c0042_config qm1d1c0042_config = {};
1358 
1359 	/* attach demod */
1360 	dvb->i2c_client_demod = dvb_module_probe("tc90522", "tc90522sat",
1361 						 &dev->i2c_adap[dev->def_i2c_bus],
1362 						 0x15, &tc90522_config);
1363 	if (!dvb->i2c_client_demod)
1364 		return -ENODEV;
1365 
1366 	/* attach tuner */
1367 	qm1d1c0042_config.fe = tc90522_config.fe;
1368 	qm1d1c0042_config.lpf = 1;
1369 
1370 	dvb->i2c_client_tuner = dvb_module_probe("qm1d1c0042", NULL,
1371 						 tc90522_config.tuner_i2c,
1372 						 0x61, &qm1d1c0042_config);
1373 	if (!dvb->i2c_client_tuner) {
1374 		dvb_module_release(dvb->i2c_client_demod);
1375 		return -ENODEV;
1376 	}
1377 
1378 	dvb->fe[0] = tc90522_config.fe;
1379 	px_bcud_init(dev);
1380 
1381 	return 0;
1382 }
1383 
em28174_dvb_init_hauppauge_wintv_dualhd_dvb(struct em28xx * dev)1384 static int em28174_dvb_init_hauppauge_wintv_dualhd_dvb(struct em28xx *dev)
1385 {
1386 	struct em28xx_dvb *dvb = dev->dvb;
1387 	struct i2c_adapter *adapter;
1388 	struct si2168_config si2168_config = {};
1389 	struct si2157_config si2157_config = {};
1390 	unsigned char addr;
1391 
1392 	/* attach demod */
1393 	si2168_config.i2c_adapter = &adapter;
1394 	si2168_config.fe = &dvb->fe[0];
1395 	si2168_config.ts_mode = SI2168_TS_SERIAL;
1396 	si2168_config.spectral_inversion = true;
1397 	addr = (dev->ts == PRIMARY_TS) ? 0x64 : 0x67;
1398 
1399 	dvb->i2c_client_demod = dvb_module_probe("si2168", NULL,
1400 						 &dev->i2c_adap[dev->def_i2c_bus],
1401 						 addr, &si2168_config);
1402 	if (!dvb->i2c_client_demod)
1403 		return -ENODEV;
1404 
1405 	/* attach tuner */
1406 	memset(&si2157_config, 0, sizeof(si2157_config));
1407 	si2157_config.fe = dvb->fe[0];
1408 	si2157_config.if_port = 1;
1409 #ifdef CONFIG_MEDIA_CONTROLLER_DVB
1410 	si2157_config.mdev = dev->media_dev;
1411 #endif
1412 	addr = (dev->ts == PRIMARY_TS) ? 0x60 : 0x63;
1413 
1414 	dvb->i2c_client_tuner = dvb_module_probe("si2157", NULL,
1415 						 adapter,
1416 						 addr, &si2157_config);
1417 	if (!dvb->i2c_client_tuner) {
1418 		dvb_module_release(dvb->i2c_client_demod);
1419 		return -ENODEV;
1420 	}
1421 
1422 	return 0;
1423 }
1424 
em28174_dvb_init_hauppauge_wintv_dualhd_01595(struct em28xx * dev)1425 static int em28174_dvb_init_hauppauge_wintv_dualhd_01595(struct em28xx *dev)
1426 {
1427 	struct em28xx_dvb *dvb = dev->dvb;
1428 	struct i2c_adapter *adapter;
1429 	struct lgdt3306a_config lgdt3306a_config =  {};
1430 	struct si2157_config si2157_config = {};
1431 	unsigned char addr;
1432 
1433 	/* attach demod */
1434 	lgdt3306a_config = hauppauge_01595_lgdt3306a_config;
1435 	lgdt3306a_config.fe = &dvb->fe[0];
1436 	lgdt3306a_config.i2c_adapter = &adapter;
1437 	addr = (dev->ts == PRIMARY_TS) ? 0x59 : 0x0e;
1438 
1439 	dvb->i2c_client_demod = dvb_module_probe("lgdt3306a", NULL,
1440 						 &dev->i2c_adap[dev->def_i2c_bus],
1441 						 addr, &lgdt3306a_config);
1442 	if (!dvb->i2c_client_demod)
1443 		return -ENODEV;
1444 
1445 	/* attach tuner */
1446 	si2157_config.fe = dvb->fe[0];
1447 	si2157_config.if_port = 1;
1448 	si2157_config.inversion = 1;
1449 #ifdef CONFIG_MEDIA_CONTROLLER_DVB
1450 	si2157_config.mdev = dev->media_dev;
1451 #endif
1452 	addr = (dev->ts == PRIMARY_TS) ? 0x60 : 0x62;
1453 
1454 	dvb->i2c_client_tuner = dvb_module_probe("si2157", NULL,
1455 						 adapter,
1456 						 addr, &si2157_config);
1457 	if (!dvb->i2c_client_tuner) {
1458 		dvb_module_release(dvb->i2c_client_demod);
1459 		return -ENODEV;
1460 	}
1461 
1462 	return 0;
1463 }
1464 
em2874_dvb_init_hauppauge_usb_quadhd(struct em28xx * dev)1465 static int em2874_dvb_init_hauppauge_usb_quadhd(struct em28xx *dev)
1466 {
1467 	struct em28xx_dvb *dvb = dev->dvb;
1468 	struct mxl692_config mxl692_config = {};
1469 	unsigned char addr;
1470 
1471 	/* attach demod/tuner combo */
1472 	mxl692_config.id = (dev->ts == PRIMARY_TS) ? 0 : 1;
1473 	mxl692_config.fe = &dvb->fe[0];
1474 	addr = (dev->ts == PRIMARY_TS) ? 0x60 : 0x63;
1475 
1476 	dvb->i2c_client_demod = dvb_module_probe("mxl692", NULL,
1477 						 &dev->i2c_adap[dev->def_i2c_bus],
1478 						 addr, &mxl692_config);
1479 	if (!dvb->i2c_client_demod)
1480 		return -ENODEV;
1481 
1482 	return 0;
1483 }
1484 
em28xx_dvb_init(struct em28xx * dev)1485 static int em28xx_dvb_init(struct em28xx *dev)
1486 {
1487 	int result = 0, dvb_alt = 0;
1488 	struct em28xx_dvb *dvb;
1489 	struct usb_device *udev;
1490 
1491 	if (dev->is_audio_only) {
1492 		/* Shouldn't initialize IR for this interface */
1493 		return 0;
1494 	}
1495 
1496 	if (!dev->board.has_dvb) {
1497 		/* This device does not support the extension */
1498 		return 0;
1499 	}
1500 
1501 	dev_info(&dev->intf->dev, "Binding DVB extension\n");
1502 
1503 	dvb = kzalloc(sizeof(*dvb), GFP_KERNEL);
1504 	if (!dvb)
1505 		return -ENOMEM;
1506 
1507 	dev->dvb = dvb;
1508 	dvb->fe[0] = NULL;
1509 	dvb->fe[1] = NULL;
1510 
1511 	/* pre-allocate DVB usb transfer buffers */
1512 	if (dev->dvb_xfer_bulk) {
1513 		result = em28xx_alloc_urbs(dev, EM28XX_DIGITAL_MODE,
1514 					   dev->dvb_xfer_bulk,
1515 					   EM28XX_DVB_NUM_BUFS,
1516 					   512,
1517 					   EM28XX_DVB_BULK_PACKET_MULTIPLIER);
1518 	} else {
1519 		result = em28xx_alloc_urbs(dev, EM28XX_DIGITAL_MODE,
1520 					   dev->dvb_xfer_bulk,
1521 					   EM28XX_DVB_NUM_BUFS,
1522 					   dev->dvb_max_pkt_size_isoc,
1523 					   EM28XX_DVB_NUM_ISOC_PACKETS);
1524 	}
1525 	if (result) {
1526 		dev_err(&dev->intf->dev,
1527 			"failed to pre-allocate USB transfer buffers for DVB.\n");
1528 		kfree(dvb);
1529 		dev->dvb = NULL;
1530 		return result;
1531 	}
1532 
1533 	mutex_lock(&dev->lock);
1534 	em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
1535 	/* init frontend */
1536 	switch (dev->model) {
1537 	case EM2874_BOARD_LEADERSHIP_ISDBT:
1538 		dvb->fe[0] = dvb_attach(s921_attach,
1539 					&sharp_isdbt,
1540 					&dev->i2c_adap[dev->def_i2c_bus]);
1541 
1542 		if (!dvb->fe[0]) {
1543 			result = -EINVAL;
1544 			goto out_free;
1545 		}
1546 
1547 		break;
1548 	case EM2883_BOARD_HAUPPAUGE_WINTV_HVR_850:
1549 	case EM2883_BOARD_HAUPPAUGE_WINTV_HVR_950:
1550 	case EM2880_BOARD_PINNACLE_PCTV_HD_PRO:
1551 	case EM2880_BOARD_AMD_ATI_TV_WONDER_HD_600:
1552 		dvb->fe[0] = dvb_attach(lgdt330x_attach,
1553 					&em2880_lgdt3303_dev,
1554 					0x0e,
1555 					&dev->i2c_adap[dev->def_i2c_bus]);
1556 		if (em28xx_attach_xc3028(0x61, dev) < 0) {
1557 			result = -EINVAL;
1558 			goto out_free;
1559 		}
1560 		break;
1561 	case EM2880_BOARD_KWORLD_DVB_310U:
1562 		dvb->fe[0] = dvb_attach(zl10353_attach,
1563 					&em28xx_zl10353_with_xc3028,
1564 					&dev->i2c_adap[dev->def_i2c_bus]);
1565 		if (em28xx_attach_xc3028(0x61, dev) < 0) {
1566 			result = -EINVAL;
1567 			goto out_free;
1568 		}
1569 		break;
1570 	case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900:
1571 	case EM2882_BOARD_TERRATEC_HYBRID_XS:
1572 	case EM2880_BOARD_EMPIRE_DUAL_TV:
1573 	case EM2882_BOARD_ZOLID_HYBRID_TV_STICK:
1574 		dvb->fe[0] = dvb_attach(zl10353_attach,
1575 					&em28xx_zl10353_xc3028_no_i2c_gate,
1576 					&dev->i2c_adap[dev->def_i2c_bus]);
1577 		if (em28xx_attach_xc3028(0x61, dev) < 0) {
1578 			result = -EINVAL;
1579 			goto out_free;
1580 		}
1581 		break;
1582 	case EM2880_BOARD_TERRATEC_HYBRID_XS:
1583 	case EM2880_BOARD_TERRATEC_HYBRID_XS_FR:
1584 	case EM2881_BOARD_PINNACLE_HYBRID_PRO:
1585 	case EM2882_BOARD_DIKOM_DK300:
1586 	case EM2882_BOARD_KWORLD_VS_DVBT:
1587 		/*
1588 		 * Those boards could have either a zl10353 or a mt352.
1589 		 * If the chip id isn't for zl10353, try mt352.
1590 		 */
1591 		dvb->fe[0] = dvb_attach(zl10353_attach,
1592 					&em28xx_zl10353_xc3028_no_i2c_gate,
1593 					&dev->i2c_adap[dev->def_i2c_bus]);
1594 		if (!dvb->fe[0])
1595 			dvb->fe[0] = dvb_attach(mt352_attach,
1596 						&terratec_xs_mt352_cfg,
1597 						&dev->i2c_adap[dev->def_i2c_bus]);
1598 
1599 		if (em28xx_attach_xc3028(0x61, dev) < 0) {
1600 			result = -EINVAL;
1601 			goto out_free;
1602 		}
1603 		break;
1604 	case EM2870_BOARD_TERRATEC_XS_MT2060:
1605 		dvb->fe[0] = dvb_attach(zl10353_attach,
1606 					&em28xx_zl10353_no_i2c_gate_dev,
1607 					&dev->i2c_adap[dev->def_i2c_bus]);
1608 		if (dvb->fe[0]) {
1609 			dvb_attach(mt2060_attach, dvb->fe[0],
1610 				   &dev->i2c_adap[dev->def_i2c_bus],
1611 				   &em28xx_mt2060_config, 1220);
1612 		}
1613 		break;
1614 	case EM2870_BOARD_KWORLD_355U:
1615 		dvb->fe[0] = dvb_attach(zl10353_attach,
1616 					&em28xx_zl10353_no_i2c_gate_dev,
1617 					&dev->i2c_adap[dev->def_i2c_bus]);
1618 		if (dvb->fe[0])
1619 			dvb_attach(qt1010_attach, dvb->fe[0],
1620 				   &dev->i2c_adap[dev->def_i2c_bus],
1621 				   &em28xx_qt1010_config);
1622 		break;
1623 	case EM2883_BOARD_KWORLD_HYBRID_330U:
1624 	case EM2882_BOARD_EVGA_INDTUBE:
1625 		dvb->fe[0] = dvb_attach(s5h1409_attach,
1626 					&em28xx_s5h1409_with_xc3028,
1627 					&dev->i2c_adap[dev->def_i2c_bus]);
1628 		if (em28xx_attach_xc3028(0x61, dev) < 0) {
1629 			result = -EINVAL;
1630 			goto out_free;
1631 		}
1632 		break;
1633 	case EM2882_BOARD_KWORLD_ATSC_315U:
1634 		dvb->fe[0] = dvb_attach(lgdt330x_attach,
1635 					&em2880_lgdt3303_dev,
1636 					0x0e,
1637 					&dev->i2c_adap[dev->def_i2c_bus]);
1638 		if (dvb->fe[0]) {
1639 			if (!dvb_attach(simple_tuner_attach, dvb->fe[0],
1640 					&dev->i2c_adap[dev->def_i2c_bus],
1641 					0x61, TUNER_THOMSON_DTT761X)) {
1642 				result = -EINVAL;
1643 				goto out_free;
1644 			}
1645 		}
1646 		break;
1647 	case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900_R2:
1648 	case EM2882_BOARD_PINNACLE_HYBRID_PRO_330E:
1649 		dvb->fe[0] = dvb_attach(drxd_attach, &em28xx_drxd, NULL,
1650 					&dev->i2c_adap[dev->def_i2c_bus],
1651 					&dev->intf->dev);
1652 		if (em28xx_attach_xc3028(0x61, dev) < 0) {
1653 			result = -EINVAL;
1654 			goto out_free;
1655 		}
1656 		break;
1657 	case EM2870_BOARD_REDDO_DVB_C_USB_BOX:
1658 		/* Philips CU1216L NIM (Philips TDA10023 + Infineon TUA6034) */
1659 		dvb->fe[0] = dvb_attach(tda10023_attach,
1660 					&em28xx_tda10023_config,
1661 					&dev->i2c_adap[dev->def_i2c_bus],
1662 					0x48);
1663 		if (dvb->fe[0]) {
1664 			if (!dvb_attach(simple_tuner_attach, dvb->fe[0],
1665 					&dev->i2c_adap[dev->def_i2c_bus],
1666 					0x60, TUNER_PHILIPS_CU1216L)) {
1667 				result = -EINVAL;
1668 				goto out_free;
1669 			}
1670 		}
1671 		break;
1672 	case EM2870_BOARD_KWORLD_A340:
1673 		dvb->fe[0] = dvb_attach(lgdt3305_attach,
1674 					&em2870_lgdt3304_dev,
1675 					&dev->i2c_adap[dev->def_i2c_bus]);
1676 		if (!dvb->fe[0]) {
1677 			result = -EINVAL;
1678 			goto out_free;
1679 		}
1680 		if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
1681 				&dev->i2c_adap[dev->def_i2c_bus],
1682 				&kworld_a340_config)) {
1683 			dvb_frontend_detach(dvb->fe[0]);
1684 			result = -EINVAL;
1685 			goto out_free;
1686 		}
1687 		break;
1688 	case EM28174_BOARD_PCTV_290E:
1689 		/* set default GPIO0 for LNA, used if GPIOLIB is undefined */
1690 		dvb->lna_gpio = CXD2820R_GPIO_E | CXD2820R_GPIO_O |
1691 				CXD2820R_GPIO_L;
1692 		dvb->fe[0] = dvb_attach(cxd2820r_attach,
1693 					&em28xx_cxd2820r_config,
1694 					&dev->i2c_adap[dev->def_i2c_bus],
1695 					&dvb->lna_gpio);
1696 		if (dvb->fe[0]) {
1697 			/* FE 0 attach tuner */
1698 			if (!dvb_attach(tda18271_attach,
1699 					dvb->fe[0],
1700 					0x60,
1701 					&dev->i2c_adap[dev->def_i2c_bus],
1702 					&em28xx_cxd2820r_tda18271_config)) {
1703 				dvb_frontend_detach(dvb->fe[0]);
1704 				result = -EINVAL;
1705 				goto out_free;
1706 			}
1707 
1708 #ifdef CONFIG_GPIOLIB
1709 			/* enable LNA for DVB-T, DVB-T2 and DVB-C */
1710 			result = gpio_request_one(dvb->lna_gpio,
1711 						  GPIOF_OUT_INIT_LOW, NULL);
1712 			if (result)
1713 				dev_err(&dev->intf->dev,
1714 					"gpio request failed %d\n",
1715 					result);
1716 			else
1717 				gpio_free(dvb->lna_gpio);
1718 
1719 			result = 0; /* continue even set LNA fails */
1720 #endif
1721 			dvb->fe[0]->ops.set_lna = em28xx_pctv_290e_set_lna;
1722 		}
1723 
1724 		break;
1725 	case EM2884_BOARD_HAUPPAUGE_WINTV_HVR_930C:
1726 	{
1727 		struct xc5000_config cfg = {};
1728 
1729 		hauppauge_hvr930c_init(dev);
1730 
1731 		dvb->fe[0] = dvb_attach(drxk_attach,
1732 					&hauppauge_930c_drxk,
1733 					&dev->i2c_adap[dev->def_i2c_bus]);
1734 		if (!dvb->fe[0]) {
1735 			result = -EINVAL;
1736 			goto out_free;
1737 		}
1738 		/* FIXME: do we need a pll semaphore? */
1739 		dvb->fe[0]->sec_priv = dvb;
1740 		sema_init(&dvb->pll_mutex, 1);
1741 		dvb->gate_ctrl = dvb->fe[0]->ops.i2c_gate_ctrl;
1742 		dvb->fe[0]->ops.i2c_gate_ctrl = drxk_gate_ctrl;
1743 
1744 		/* Attach xc5000 */
1745 		cfg.i2c_address  = 0x61;
1746 		cfg.if_khz = 4000;
1747 
1748 		if (dvb->fe[0]->ops.i2c_gate_ctrl)
1749 			dvb->fe[0]->ops.i2c_gate_ctrl(dvb->fe[0], 1);
1750 		if (!dvb_attach(xc5000_attach, dvb->fe[0],
1751 				&dev->i2c_adap[dev->def_i2c_bus], &cfg)) {
1752 			result = -EINVAL;
1753 			goto out_free;
1754 		}
1755 		if (dvb->fe[0]->ops.i2c_gate_ctrl)
1756 			dvb->fe[0]->ops.i2c_gate_ctrl(dvb->fe[0], 0);
1757 
1758 		break;
1759 	}
1760 	case EM2884_BOARD_TERRATEC_H5:
1761 		terratec_h5_init(dev);
1762 
1763 		dvb->fe[0] = dvb_attach(drxk_attach, &terratec_h5_drxk,
1764 					&dev->i2c_adap[dev->def_i2c_bus]);
1765 		if (!dvb->fe[0]) {
1766 			result = -EINVAL;
1767 			goto out_free;
1768 		}
1769 		/* FIXME: do we need a pll semaphore? */
1770 		dvb->fe[0]->sec_priv = dvb;
1771 		sema_init(&dvb->pll_mutex, 1);
1772 		dvb->gate_ctrl = dvb->fe[0]->ops.i2c_gate_ctrl;
1773 		dvb->fe[0]->ops.i2c_gate_ctrl = drxk_gate_ctrl;
1774 
1775 		/* Attach tda18271 to DVB-C frontend */
1776 		if (dvb->fe[0]->ops.i2c_gate_ctrl)
1777 			dvb->fe[0]->ops.i2c_gate_ctrl(dvb->fe[0], 1);
1778 		if (!dvb_attach(tda18271c2dd_attach, dvb->fe[0],
1779 				&dev->i2c_adap[dev->def_i2c_bus], 0x60)) {
1780 			result = -EINVAL;
1781 			goto out_free;
1782 		}
1783 		if (dvb->fe[0]->ops.i2c_gate_ctrl)
1784 			dvb->fe[0]->ops.i2c_gate_ctrl(dvb->fe[0], 0);
1785 
1786 		break;
1787 	case EM2884_BOARD_C3TECH_DIGITAL_DUO:
1788 		dvb->fe[0] = dvb_attach(mb86a20s_attach,
1789 					&c3tech_duo_mb86a20s_config,
1790 					&dev->i2c_adap[dev->def_i2c_bus]);
1791 		if (dvb->fe[0])
1792 			dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
1793 				   &dev->i2c_adap[dev->def_i2c_bus],
1794 				   &c3tech_duo_tda18271_config);
1795 		break;
1796 	case EM28174_BOARD_PCTV_460E:
1797 		result = em28174_dvb_init_pctv_460e(dev);
1798 		if (result)
1799 			goto out_free;
1800 		break;
1801 	case EM2874_BOARD_DELOCK_61959:
1802 	case EM2874_BOARD_MAXMEDIA_UB425_TC:
1803 		/* attach demodulator */
1804 		dvb->fe[0] = dvb_attach(drxk_attach, &maxmedia_ub425_tc_drxk,
1805 					&dev->i2c_adap[dev->def_i2c_bus]);
1806 
1807 		if (dvb->fe[0]) {
1808 			/* disable I2C-gate */
1809 			dvb->fe[0]->ops.i2c_gate_ctrl = NULL;
1810 
1811 			/* attach tuner */
1812 			if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
1813 					&dev->i2c_adap[dev->def_i2c_bus],
1814 					&em28xx_cxd2820r_tda18271_config)) {
1815 				dvb_frontend_detach(dvb->fe[0]);
1816 				result = -EINVAL;
1817 				goto out_free;
1818 			}
1819 		}
1820 		break;
1821 	case EM2884_BOARD_PCTV_510E:
1822 	case EM2884_BOARD_PCTV_520E:
1823 		pctv_520e_init(dev);
1824 
1825 		/* attach demodulator */
1826 		dvb->fe[0] = dvb_attach(drxk_attach, &pctv_520e_drxk,
1827 					&dev->i2c_adap[dev->def_i2c_bus]);
1828 
1829 		if (dvb->fe[0]) {
1830 			/* attach tuner */
1831 			if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
1832 					&dev->i2c_adap[dev->def_i2c_bus],
1833 					&em28xx_cxd2820r_tda18271_config)) {
1834 				dvb_frontend_detach(dvb->fe[0]);
1835 				result = -EINVAL;
1836 				goto out_free;
1837 			}
1838 		}
1839 		break;
1840 	case EM2884_BOARD_ELGATO_EYETV_HYBRID_2008:
1841 	case EM2884_BOARD_CINERGY_HTC_STICK:
1842 	case EM2884_BOARD_TERRATEC_H6:
1843 		terratec_htc_stick_init(dev);
1844 
1845 		/* attach demodulator */
1846 		dvb->fe[0] = dvb_attach(drxk_attach, &terratec_htc_stick_drxk,
1847 					&dev->i2c_adap[dev->def_i2c_bus]);
1848 		if (!dvb->fe[0]) {
1849 			result = -EINVAL;
1850 			goto out_free;
1851 		}
1852 
1853 		/* Attach the demodulator. */
1854 		if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
1855 				&dev->i2c_adap[dev->def_i2c_bus],
1856 				&em28xx_cxd2820r_tda18271_config)) {
1857 			result = -EINVAL;
1858 			goto out_free;
1859 		}
1860 		break;
1861 	case EM2884_BOARD_TERRATEC_HTC_USB_XS:
1862 		terratec_htc_usb_xs_init(dev);
1863 
1864 		/* attach demodulator */
1865 		dvb->fe[0] = dvb_attach(drxk_attach, &terratec_htc_stick_drxk,
1866 					&dev->i2c_adap[dev->def_i2c_bus]);
1867 		if (!dvb->fe[0]) {
1868 			result = -EINVAL;
1869 			goto out_free;
1870 		}
1871 
1872 		/* Attach the demodulator. */
1873 		if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
1874 				&dev->i2c_adap[dev->def_i2c_bus],
1875 				&em28xx_cxd2820r_tda18271_config)) {
1876 			result = -EINVAL;
1877 			goto out_free;
1878 		}
1879 		break;
1880 	case EM2874_BOARD_KWORLD_UB435Q_V2:
1881 		dvb->fe[0] = dvb_attach(lgdt3305_attach,
1882 					&em2874_lgdt3305_dev,
1883 					&dev->i2c_adap[dev->def_i2c_bus]);
1884 		if (!dvb->fe[0]) {
1885 			result = -EINVAL;
1886 			goto out_free;
1887 		}
1888 
1889 		/* Attach the demodulator. */
1890 		if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
1891 				&dev->i2c_adap[dev->def_i2c_bus],
1892 				&kworld_ub435q_v2_config)) {
1893 			result = -EINVAL;
1894 			goto out_free;
1895 		}
1896 		break;
1897 	case EM2874_BOARD_KWORLD_UB435Q_V3:
1898 	{
1899 		struct i2c_adapter *adapter = &dev->i2c_adap[dev->def_i2c_bus];
1900 
1901 		dvb->fe[0] = dvb_attach(lgdt3305_attach,
1902 					&em2874_lgdt3305_nogate_dev,
1903 					&dev->i2c_adap[dev->def_i2c_bus]);
1904 		if (!dvb->fe[0]) {
1905 			result = -EINVAL;
1906 			goto out_free;
1907 		}
1908 
1909 		/* attach tuner */
1910 		kworld_ub435q_v3_config.fe = dvb->fe[0];
1911 
1912 		dvb->i2c_client_tuner = dvb_module_probe("tda18212", NULL,
1913 							 adapter, 0x60,
1914 							 &kworld_ub435q_v3_config);
1915 		if (!dvb->i2c_client_tuner) {
1916 			dvb_frontend_detach(dvb->fe[0]);
1917 			result = -ENODEV;
1918 			goto out_free;
1919 		}
1920 		break;
1921 	}
1922 	case EM2874_BOARD_PCTV_HD_MINI_80E:
1923 		dvb->fe[0] = dvb_attach(drx39xxj_attach,
1924 					&dev->i2c_adap[dev->def_i2c_bus]);
1925 		if (dvb->fe[0]) {
1926 			dvb->fe[0] = dvb_attach(tda18271_attach, dvb->fe[0],
1927 						0x60,
1928 						&dev->i2c_adap[dev->def_i2c_bus],
1929 						&pinnacle_80e_dvb_config);
1930 			if (!dvb->fe[0]) {
1931 				result = -EINVAL;
1932 				goto out_free;
1933 			}
1934 		}
1935 		break;
1936 	case EM28178_BOARD_PCTV_461E:
1937 		result = em28178_dvb_init_pctv_461e(dev);
1938 		if (result)
1939 			goto out_free;
1940 		break;
1941 	case EM28178_BOARD_PCTV_461E_V2:
1942 		result = em28178_dvb_init_pctv_461e_v2(dev);
1943 		if (result)
1944 			goto out_free;
1945 		break;
1946 	case EM28178_BOARD_PCTV_292E:
1947 		result = em28178_dvb_init_pctv_292e(dev);
1948 		if (result)
1949 			goto out_free;
1950 		break;
1951 	case EM28178_BOARD_TERRATEC_T2_STICK_HD:
1952 		result = em28178_dvb_init_terratec_t2_stick_hd(dev);
1953 		if (result)
1954 			goto out_free;
1955 		break;
1956 	case EM28178_BOARD_PLEX_PX_BCUD:
1957 		result = em28178_dvb_init_plex_px_bcud(dev);
1958 		if (result)
1959 			goto out_free;
1960 		break;
1961 	case EM28174_BOARD_HAUPPAUGE_WINTV_DUALHD_DVB:
1962 		result = em28174_dvb_init_hauppauge_wintv_dualhd_dvb(dev);
1963 		if (result)
1964 			goto out_free;
1965 		break;
1966 	case EM28174_BOARD_HAUPPAUGE_WINTV_DUALHD_01595:
1967 		result = em28174_dvb_init_hauppauge_wintv_dualhd_01595(dev);
1968 		if (result)
1969 			goto out_free;
1970 		break;
1971 	case EM2874_BOARD_HAUPPAUGE_USB_QUADHD:
1972 		result = em2874_dvb_init_hauppauge_usb_quadhd(dev);
1973 		if (result)
1974 			goto out_free;
1975 		break;
1976 	default:
1977 		dev_err(&dev->intf->dev,
1978 			"The frontend of your DVB/ATSC card isn't supported yet\n");
1979 		break;
1980 	}
1981 	if (!dvb->fe[0]) {
1982 		dev_err(&dev->intf->dev, "frontend initialization failed\n");
1983 		result = -EINVAL;
1984 		goto out_free;
1985 	}
1986 	/* define general-purpose callback pointer */
1987 	dvb->fe[0]->callback = em28xx_tuner_callback;
1988 	if (dvb->fe[1])
1989 		dvb->fe[1]->callback = em28xx_tuner_callback;
1990 
1991 	/* register everything */
1992 	result = em28xx_register_dvb(dvb, THIS_MODULE, dev, &dev->intf->dev);
1993 
1994 	if (result < 0)
1995 		goto out_free;
1996 
1997 	if (dev->dvb_xfer_bulk) {
1998 		dvb_alt = 0;
1999 	} else { /* isoc */
2000 		dvb_alt = dev->dvb_alt_isoc;
2001 	}
2002 
2003 	udev = interface_to_usbdev(dev->intf);
2004 	usb_set_interface(udev, dev->ifnum, dvb_alt);
2005 	dev_info(&dev->intf->dev, "DVB extension successfully initialized\n");
2006 
2007 	kref_get(&dev->ref);
2008 
2009 ret:
2010 	em28xx_set_mode(dev, EM28XX_SUSPEND);
2011 	mutex_unlock(&dev->lock);
2012 	return result;
2013 
2014 out_free:
2015 	em28xx_uninit_usb_xfer(dev, EM28XX_DIGITAL_MODE);
2016 	kfree(dvb);
2017 	dev->dvb = NULL;
2018 	goto ret;
2019 }
2020 
prevent_sleep(struct dvb_frontend_ops * ops)2021 static inline void prevent_sleep(struct dvb_frontend_ops *ops)
2022 {
2023 	ops->set_voltage = NULL;
2024 	ops->sleep = NULL;
2025 	ops->tuner_ops.sleep = NULL;
2026 }
2027 
em28xx_dvb_fini(struct em28xx * dev)2028 static int em28xx_dvb_fini(struct em28xx *dev)
2029 {
2030 	struct em28xx_dvb *dvb;
2031 
2032 	if (dev->is_audio_only) {
2033 		/* Shouldn't initialize IR for this interface */
2034 		return 0;
2035 	}
2036 
2037 	if (!dev->board.has_dvb) {
2038 		/* This device does not support the extension */
2039 		return 0;
2040 	}
2041 
2042 	if (!dev->dvb)
2043 		return 0;
2044 
2045 	dev_info(&dev->intf->dev, "Closing DVB extension\n");
2046 
2047 	dvb = dev->dvb;
2048 
2049 	em28xx_uninit_usb_xfer(dev, EM28XX_DIGITAL_MODE);
2050 
2051 	if (dev->disconnected) {
2052 		/*
2053 		 * We cannot tell the device to sleep
2054 		 * once it has been unplugged.
2055 		 */
2056 		if (dvb->fe[0]) {
2057 			prevent_sleep(&dvb->fe[0]->ops);
2058 			dvb->fe[0]->exit = DVB_FE_DEVICE_REMOVED;
2059 		}
2060 		if (dvb->fe[1]) {
2061 			prevent_sleep(&dvb->fe[1]->ops);
2062 			dvb->fe[1]->exit = DVB_FE_DEVICE_REMOVED;
2063 		}
2064 	}
2065 
2066 	em28xx_unregister_dvb(dvb);
2067 
2068 	/* release I2C module bindings */
2069 	dvb_module_release(dvb->i2c_client_sec);
2070 	dvb_module_release(dvb->i2c_client_tuner);
2071 	dvb_module_release(dvb->i2c_client_demod);
2072 
2073 	kfree(dvb);
2074 	dev->dvb = NULL;
2075 	kref_put(&dev->ref, em28xx_free_device);
2076 
2077 	return 0;
2078 }
2079 
em28xx_dvb_suspend(struct em28xx * dev)2080 static int em28xx_dvb_suspend(struct em28xx *dev)
2081 {
2082 	int ret = 0;
2083 
2084 	if (dev->is_audio_only)
2085 		return 0;
2086 
2087 	if (!dev->board.has_dvb)
2088 		return 0;
2089 
2090 	dev_info(&dev->intf->dev, "Suspending DVB extension\n");
2091 	if (dev->dvb) {
2092 		struct em28xx_dvb *dvb = dev->dvb;
2093 
2094 		if (dvb->fe[0]) {
2095 			ret = dvb_frontend_suspend(dvb->fe[0]);
2096 			dev_info(&dev->intf->dev, "fe0 suspend %d\n", ret);
2097 		}
2098 		if (dvb->fe[1]) {
2099 			dvb_frontend_suspend(dvb->fe[1]);
2100 			dev_info(&dev->intf->dev, "fe1 suspend %d\n", ret);
2101 		}
2102 	}
2103 
2104 	return 0;
2105 }
2106 
em28xx_dvb_resume(struct em28xx * dev)2107 static int em28xx_dvb_resume(struct em28xx *dev)
2108 {
2109 	int ret = 0;
2110 
2111 	if (dev->is_audio_only)
2112 		return 0;
2113 
2114 	if (!dev->board.has_dvb)
2115 		return 0;
2116 
2117 	dev_info(&dev->intf->dev, "Resuming DVB extension\n");
2118 	if (dev->dvb) {
2119 		struct em28xx_dvb *dvb = dev->dvb;
2120 
2121 		if (dvb->fe[0]) {
2122 			ret = dvb_frontend_resume(dvb->fe[0]);
2123 			dev_info(&dev->intf->dev, "fe0 resume %d\n", ret);
2124 		}
2125 
2126 		if (dvb->fe[1]) {
2127 			ret = dvb_frontend_resume(dvb->fe[1]);
2128 			dev_info(&dev->intf->dev, "fe1 resume %d\n", ret);
2129 		}
2130 	}
2131 
2132 	return 0;
2133 }
2134 
2135 static struct em28xx_ops dvb_ops = {
2136 	.id   = EM28XX_DVB,
2137 	.name = "Em28xx dvb Extension",
2138 	.init = em28xx_dvb_init,
2139 	.fini = em28xx_dvb_fini,
2140 	.suspend = em28xx_dvb_suspend,
2141 	.resume = em28xx_dvb_resume,
2142 };
2143 
em28xx_dvb_register(void)2144 static int __init em28xx_dvb_register(void)
2145 {
2146 	return em28xx_register_extension(&dvb_ops);
2147 }
2148 
em28xx_dvb_unregister(void)2149 static void __exit em28xx_dvb_unregister(void)
2150 {
2151 	em28xx_unregister_extension(&dvb_ops);
2152 }
2153 
2154 module_init(em28xx_dvb_register);
2155 module_exit(em28xx_dvb_unregister);
2156