1 /*
2     ivtv driver initialization and card probing
3     Copyright (C) 2003-2004  Kevin Thayer <nufan_wfk at yahoo.com>
4     Copyright (C) 2004  Chris Kennedy <c@groovy.org>
5     Copyright (C) 2005-2007  Hans Verkuil <hverkuil@xs4all.nl>
6 
7     This program is free software; you can redistribute it and/or modify
8     it under the terms of the GNU General Public License as published by
9     the Free Software Foundation; either version 2 of the License, or
10     (at your option) any later version.
11 
12     This program is distributed in the hope that it will be useful,
13     but WITHOUT ANY WARRANTY; without even the implied warranty of
14     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15     GNU General Public License for more details.
16 
17     You should have received a copy of the GNU General Public License
18     along with this program; if not, write to the Free Software
19     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
20  */
21 
22 /* Main Driver file for the ivtv project:
23  * Driver for the Conexant CX23415/CX23416 chip.
24  * Author: Kevin Thayer (nufan_wfk at yahoo.com)
25  * License: GPL
26  *
27  * -----
28  * MPG600/MPG160 support by  T.Adachi <tadachi@tadachi-net.com>
29  *                      and Takeru KOMORIYA<komoriya@paken.org>
30  *
31  * AVerMedia M179 GPIO info by Chris Pinkham <cpinkham@bc2va.org>
32  *                using information provided by Jiun-Kuei Jung @ AVerMedia.
33  *
34  * Kurouto Sikou CX23416GYC-STVLP tested by K.Ohta <alpha292@bremen.or.jp>
35  *                using information from T.Adachi,Takeru KOMORIYA and others :-)
36  *
37  * Nagase TRANSGEAR 5000TV, Aopen VA2000MAX-STN6 and I/O data GV-MVP/RX
38  *                version by T.Adachi. Special thanks  Mr.Suzuki
39  */
40 
41 #include "ivtv-driver.h"
42 #include "ivtv-version.h"
43 #include "ivtv-fileops.h"
44 #include "ivtv-i2c.h"
45 #include "ivtv-firmware.h"
46 #include "ivtv-queue.h"
47 #include "ivtv-udma.h"
48 #include "ivtv-irq.h"
49 #include "ivtv-mailbox.h"
50 #include "ivtv-streams.h"
51 #include "ivtv-ioctl.h"
52 #include "ivtv-cards.h"
53 #include "ivtv-vbi.h"
54 #include "ivtv-routing.h"
55 #include "ivtv-controls.h"
56 #include "ivtv-gpio.h"
57 #include <linux/dma-mapping.h>
58 #include <media/tveeprom.h>
59 #include <media/i2c/saa7115.h>
60 #include "xc2028.h"
61 #include <uapi/linux/sched/types.h>
62 
63 /* If you have already X v4l cards, then set this to X. This way
64    the device numbers stay matched. Example: you have a WinTV card
65    without radio and a PVR-350 with. Normally this would give a
66    video1 device together with a radio0 device for the PVR. By
67    setting this to 1 you ensure that radio0 is now also radio1. */
68 int ivtv_first_minor;
69 
70 /* Callback for registering extensions */
71 int (*ivtv_ext_init)(struct ivtv *);
72 EXPORT_SYMBOL(ivtv_ext_init);
73 
74 /* add your revision and whatnot here */
75 static const struct pci_device_id ivtv_pci_tbl[] = {
76 	{PCI_VENDOR_ID_ICOMP, PCI_DEVICE_ID_IVTV15,
77 	 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
78 	{PCI_VENDOR_ID_ICOMP, PCI_DEVICE_ID_IVTV16,
79 	 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
80 	{0,}
81 };
82 
83 MODULE_DEVICE_TABLE(pci,ivtv_pci_tbl);
84 
85 /* ivtv instance counter */
86 static atomic_t ivtv_instance = ATOMIC_INIT(0);
87 
88 /* Parameter declarations */
89 static int cardtype[IVTV_MAX_CARDS];
90 static int tuner[IVTV_MAX_CARDS] = { -1, -1, -1, -1, -1, -1, -1, -1,
91 				     -1, -1, -1, -1, -1, -1, -1, -1,
92 				     -1, -1, -1, -1, -1, -1, -1, -1,
93 				     -1, -1, -1, -1, -1, -1, -1, -1 };
94 static int radio[IVTV_MAX_CARDS] = { -1, -1, -1, -1, -1, -1, -1, -1,
95 				     -1, -1, -1, -1, -1, -1, -1, -1,
96 				     -1, -1, -1, -1, -1, -1, -1, -1,
97 				     -1, -1, -1, -1, -1, -1, -1, -1 };
98 static int i2c_clock_period[IVTV_MAX_CARDS] = { -1, -1, -1, -1, -1, -1, -1, -1,
99 					       -1, -1, -1, -1, -1, -1, -1, -1,
100 					       -1, -1, -1, -1, -1, -1, -1, -1,
101 					       -1, -1, -1, -1, -1, -1, -1, -1 };
102 
103 static unsigned int cardtype_c = 1;
104 static unsigned int tuner_c = 1;
105 static int radio_c = 1;
106 static unsigned int i2c_clock_period_c = 1;
107 static char pal[] = "---";
108 static char secam[] = "--";
109 static char ntsc[] = "-";
110 
111 /* Buffers */
112 
113 /* DMA Buffers, Default size in MB allocated */
114 #define IVTV_DEFAULT_ENC_MPG_BUFFERS 4
115 #define IVTV_DEFAULT_ENC_YUV_BUFFERS 2
116 #define IVTV_DEFAULT_ENC_VBI_BUFFERS 1
117 /* Exception: size in kB for this stream (MB is overkill) */
118 #define IVTV_DEFAULT_ENC_PCM_BUFFERS 320
119 #define IVTV_DEFAULT_DEC_MPG_BUFFERS 1
120 #define IVTV_DEFAULT_DEC_YUV_BUFFERS 1
121 /* Exception: size in kB for this stream (MB is way overkill) */
122 #define IVTV_DEFAULT_DEC_VBI_BUFFERS 64
123 
124 static int enc_mpg_buffers = IVTV_DEFAULT_ENC_MPG_BUFFERS;
125 static int enc_yuv_buffers = IVTV_DEFAULT_ENC_YUV_BUFFERS;
126 static int enc_vbi_buffers = IVTV_DEFAULT_ENC_VBI_BUFFERS;
127 static int enc_pcm_buffers = IVTV_DEFAULT_ENC_PCM_BUFFERS;
128 static int dec_mpg_buffers = IVTV_DEFAULT_DEC_MPG_BUFFERS;
129 static int dec_yuv_buffers = IVTV_DEFAULT_DEC_YUV_BUFFERS;
130 static int dec_vbi_buffers = IVTV_DEFAULT_DEC_VBI_BUFFERS;
131 
132 static int ivtv_yuv_mode;
133 static int ivtv_yuv_threshold = -1;
134 static int ivtv_pci_latency = 1;
135 
136 int ivtv_debug;
137 #ifdef CONFIG_VIDEO_ADV_DEBUG
138 int ivtv_fw_debug;
139 #endif
140 
141 static int tunertype = -1;
142 static int newi2c = -1;
143 
144 module_param_array(tuner, int, &tuner_c, 0644);
145 module_param_array(radio, int, &radio_c, 0644);
146 module_param_array(cardtype, int, &cardtype_c, 0644);
147 module_param_string(pal, pal, sizeof(pal), 0644);
148 module_param_string(secam, secam, sizeof(secam), 0644);
149 module_param_string(ntsc, ntsc, sizeof(ntsc), 0644);
150 module_param_named(debug,ivtv_debug, int, 0644);
151 #ifdef CONFIG_VIDEO_ADV_DEBUG
152 module_param_named(fw_debug, ivtv_fw_debug, int, 0644);
153 #endif
154 module_param(ivtv_pci_latency, int, 0644);
155 module_param(ivtv_yuv_mode, int, 0644);
156 module_param(ivtv_yuv_threshold, int, 0644);
157 module_param(ivtv_first_minor, int, 0644);
158 
159 module_param(enc_mpg_buffers, int, 0644);
160 module_param(enc_yuv_buffers, int, 0644);
161 module_param(enc_vbi_buffers, int, 0644);
162 module_param(enc_pcm_buffers, int, 0644);
163 module_param(dec_mpg_buffers, int, 0644);
164 module_param(dec_yuv_buffers, int, 0644);
165 module_param(dec_vbi_buffers, int, 0644);
166 
167 module_param(tunertype, int, 0644);
168 module_param(newi2c, int, 0644);
169 module_param_array(i2c_clock_period, int, &i2c_clock_period_c, 0644);
170 
171 MODULE_PARM_DESC(tuner, "Tuner type selection,\n"
172 			"\t\t\tsee tuner.h for values");
173 MODULE_PARM_DESC(radio,
174 		 "Enable or disable the radio. Use only if autodetection\n"
175 		 "\t\t\tfails. 0 = disable, 1 = enable");
176 MODULE_PARM_DESC(cardtype,
177 		 "Only use this option if your card is not detected properly.\n"
178 		 "\t\tSpecify card type:\n"
179 		 "\t\t\t 1 = WinTV PVR 250\n"
180 		 "\t\t\t 2 = WinTV PVR 350\n"
181 		 "\t\t\t 3 = WinTV PVR-150 or PVR-500\n"
182 		 "\t\t\t 4 = AVerMedia M179\n"
183 		 "\t\t\t 5 = YUAN MPG600/Kuroutoshikou iTVC16-STVLP\n"
184 		 "\t\t\t 6 = YUAN MPG160/Kuroutoshikou iTVC15-STVLP\n"
185 		 "\t\t\t 7 = YUAN PG600/DIAMONDMM PVR-550 (CX Falcon 2)\n"
186 		 "\t\t\t 8 = Adaptec AVC-2410\n"
187 		 "\t\t\t 9 = Adaptec AVC-2010\n"
188 		 "\t\t\t10 = NAGASE TRANSGEAR 5000TV\n"
189 		 "\t\t\t11 = AOpen VA2000MAX-STN6\n"
190 		 "\t\t\t12 = YUAN MPG600GR/Kuroutoshikou CX23416GYC-STVLP\n"
191 		 "\t\t\t13 = I/O Data GV-MVP/RX\n"
192 		 "\t\t\t14 = I/O Data GV-MVP/RX2E\n"
193 		 "\t\t\t15 = GOTVIEW PCI DVD\n"
194 		 "\t\t\t16 = GOTVIEW PCI DVD2 Deluxe\n"
195 		 "\t\t\t17 = Yuan MPC622\n"
196 		 "\t\t\t18 = Digital Cowboy DCT-MTVP1\n"
197 		 "\t\t\t19 = Yuan PG600V2/GotView PCI DVD Lite\n"
198 		 "\t\t\t20 = Club3D ZAP-TV1x01\n"
199 		 "\t\t\t21 = AverTV MCE 116 Plus\n"
200 		 "\t\t\t22 = ASUS Falcon2\n"
201 		 "\t\t\t23 = AverMedia PVR-150 Plus\n"
202 		 "\t\t\t24 = AverMedia EZMaker PCI Deluxe\n"
203 		 "\t\t\t25 = AverMedia M104 (not yet working)\n"
204 		 "\t\t\t26 = Buffalo PC-MV5L/PCI\n"
205 		 "\t\t\t27 = AVerMedia UltraTV 1500 MCE\n"
206 		 "\t\t\t28 = Sony VAIO Giga Pocket (ENX Kikyou)\n"
207 		 "\t\t\t 0 = Autodetect (default)\n"
208 		 "\t\t\t-1 = Ignore this card\n\t\t");
209 MODULE_PARM_DESC(pal, "Set PAL standard: BGH, DK, I, M, N, Nc, 60");
210 MODULE_PARM_DESC(secam, "Set SECAM standard: BGH, DK, L, LC");
211 MODULE_PARM_DESC(ntsc, "Set NTSC standard: M, J (Japan), K (South Korea)");
212 MODULE_PARM_DESC(tunertype,
213 		"Specify tuner type:\n"
214 		"\t\t\t 0 = tuner for PAL-B/G/H/D/K/I, SECAM-B/G/H/D/K/L/Lc\n"
215 		"\t\t\t 1 = tuner for NTSC-M/J/K, PAL-M/N/Nc\n"
216 		"\t\t\t-1 = Autodetect (default)\n");
217 MODULE_PARM_DESC(debug,
218 		 "Debug level (bitmask). Default: 0\n"
219 		 "\t\t\t   1/0x0001: warning\n"
220 		 "\t\t\t   2/0x0002: info\n"
221 		 "\t\t\t   4/0x0004: mailbox\n"
222 		 "\t\t\t   8/0x0008: ioctl\n"
223 		 "\t\t\t  16/0x0010: file\n"
224 		 "\t\t\t  32/0x0020: dma\n"
225 		 "\t\t\t  64/0x0040: irq\n"
226 		 "\t\t\t 128/0x0080: decoder\n"
227 		 "\t\t\t 256/0x0100: yuv\n"
228 		 "\t\t\t 512/0x0200: i2c\n"
229 		 "\t\t\t1024/0x0400: high volume\n");
230 #ifdef CONFIG_VIDEO_ADV_DEBUG
231 MODULE_PARM_DESC(fw_debug,
232 		 "Enable code for debugging firmware problems.  Default: 0\n");
233 #endif
234 MODULE_PARM_DESC(ivtv_pci_latency,
235 		 "Change the PCI latency to 64 if lower: 0 = No, 1 = Yes,\n"
236 		 "\t\t\tDefault: Yes");
237 MODULE_PARM_DESC(ivtv_yuv_mode,
238 		 "Specify the yuv playback mode:\n"
239 		 "\t\t\t0 = interlaced\n\t\t\t1 = progressive\n\t\t\t2 = auto\n"
240 		 "\t\t\tDefault: 0 (interlaced)");
241 MODULE_PARM_DESC(ivtv_yuv_threshold,
242 		 "If ivtv_yuv_mode is 2 (auto) then playback content as\n\t\tprogressive if src height <= ivtv_yuvthreshold\n"
243 		 "\t\t\tDefault: 480");
244 MODULE_PARM_DESC(enc_mpg_buffers,
245 		 "Encoder MPG Buffers (in MB)\n"
246 		 "\t\t\tDefault: " __stringify(IVTV_DEFAULT_ENC_MPG_BUFFERS));
247 MODULE_PARM_DESC(enc_yuv_buffers,
248 		 "Encoder YUV Buffers (in MB)\n"
249 		 "\t\t\tDefault: " __stringify(IVTV_DEFAULT_ENC_YUV_BUFFERS));
250 MODULE_PARM_DESC(enc_vbi_buffers,
251 		 "Encoder VBI Buffers (in MB)\n"
252 		 "\t\t\tDefault: " __stringify(IVTV_DEFAULT_ENC_VBI_BUFFERS));
253 MODULE_PARM_DESC(enc_pcm_buffers,
254 		 "Encoder PCM buffers (in kB)\n"
255 		 "\t\t\tDefault: " __stringify(IVTV_DEFAULT_ENC_PCM_BUFFERS));
256 MODULE_PARM_DESC(dec_mpg_buffers,
257 		 "Decoder MPG buffers (in MB)\n"
258 		 "\t\t\tDefault: " __stringify(IVTV_DEFAULT_DEC_MPG_BUFFERS));
259 MODULE_PARM_DESC(dec_yuv_buffers,
260 		 "Decoder YUV buffers (in MB)\n"
261 		 "\t\t\tDefault: " __stringify(IVTV_DEFAULT_DEC_YUV_BUFFERS));
262 MODULE_PARM_DESC(dec_vbi_buffers,
263 		 "Decoder VBI buffers (in kB)\n"
264 		 "\t\t\tDefault: " __stringify(IVTV_DEFAULT_DEC_VBI_BUFFERS));
265 MODULE_PARM_DESC(newi2c,
266 		 "Use new I2C implementation\n"
267 		 "\t\t\t-1 is autodetect, 0 is off, 1 is on\n"
268 		 "\t\t\tDefault is autodetect");
269 MODULE_PARM_DESC(i2c_clock_period,
270 		 "Period of SCL for the I2C bus controlled by the CX23415/6\n"
271 		 "\t\t\tMin: 10 usec (100 kHz), Max: 4500 usec (222 Hz)\n"
272 		 "\t\t\tDefault: " __stringify(IVTV_DEFAULT_I2C_CLOCK_PERIOD));
273 
274 MODULE_PARM_DESC(ivtv_first_minor, "Set device node number assigned to first card");
275 
276 MODULE_AUTHOR("Kevin Thayer, Chris Kennedy, Hans Verkuil");
277 MODULE_DESCRIPTION("CX23415/CX23416 driver");
278 MODULE_LICENSE("GPL");
279 
280 MODULE_VERSION(IVTV_VERSION);
281 
282 #if defined(CONFIG_MODULES) && defined(MODULE)
283 static void request_module_async(struct work_struct *work)
284 {
285 	struct ivtv *dev = container_of(work, struct ivtv, request_module_wk);
286 
287 	/* Make sure ivtv-alsa module is loaded */
288 	request_module("ivtv-alsa");
289 
290 	/* Initialize ivtv-alsa for this instance of the cx18 device */
291 	if (ivtv_ext_init != NULL)
292 		ivtv_ext_init(dev);
293 }
294 
295 static void request_modules(struct ivtv *dev)
296 {
297 	INIT_WORK(&dev->request_module_wk, request_module_async);
298 	schedule_work(&dev->request_module_wk);
299 }
300 
301 static void flush_request_modules(struct ivtv *dev)
302 {
303 	flush_work(&dev->request_module_wk);
304 }
305 #else
306 #define request_modules(dev)
307 #define flush_request_modules(dev)
308 #endif /* CONFIG_MODULES */
309 
310 void ivtv_clear_irq_mask(struct ivtv *itv, u32 mask)
311 {
312 	itv->irqmask &= ~mask;
313 	write_reg_sync(itv->irqmask, IVTV_REG_IRQMASK);
314 }
315 
316 void ivtv_set_irq_mask(struct ivtv *itv, u32 mask)
317 {
318 	itv->irqmask |= mask;
319 	write_reg_sync(itv->irqmask, IVTV_REG_IRQMASK);
320 }
321 
322 int ivtv_set_output_mode(struct ivtv *itv, int mode)
323 {
324     int old_mode;
325 
326     spin_lock(&itv->lock);
327     old_mode = itv->output_mode;
328     if (old_mode == 0)
329 	itv->output_mode = old_mode = mode;
330     spin_unlock(&itv->lock);
331     return old_mode;
332 }
333 
334 struct ivtv_stream *ivtv_get_output_stream(struct ivtv *itv)
335 {
336 	switch (itv->output_mode) {
337 	case OUT_MPG:
338 		return &itv->streams[IVTV_DEC_STREAM_TYPE_MPG];
339 	case OUT_YUV:
340 		return &itv->streams[IVTV_DEC_STREAM_TYPE_YUV];
341 	default:
342 		return NULL;
343 	}
344 }
345 
346 int ivtv_waitq(wait_queue_head_t *waitq)
347 {
348 	DEFINE_WAIT(wait);
349 
350 	prepare_to_wait(waitq, &wait, TASK_INTERRUPTIBLE);
351 	schedule();
352 	finish_wait(waitq, &wait);
353 	return signal_pending(current) ? -EINTR : 0;
354 }
355 
356 /* Generic utility functions */
357 int ivtv_msleep_timeout(unsigned int msecs, int intr)
358 {
359 	int timeout = msecs_to_jiffies(msecs);
360 
361 	do {
362 		set_current_state(intr ? TASK_INTERRUPTIBLE : TASK_UNINTERRUPTIBLE);
363 		timeout = schedule_timeout(timeout);
364 		if (intr) {
365 			int ret = signal_pending(current);
366 
367 			if (ret)
368 				return ret;
369 		}
370 	} while (timeout);
371 	return 0;
372 }
373 
374 /* Release ioremapped memory */
375 static void ivtv_iounmap(struct ivtv *itv)
376 {
377 	if (itv == NULL)
378 		return;
379 
380 	/* Release registers memory */
381 	if (itv->reg_mem != NULL) {
382 		IVTV_DEBUG_INFO("releasing reg_mem\n");
383 		iounmap(itv->reg_mem);
384 		itv->reg_mem = NULL;
385 	}
386 	/* Release io memory */
387 	if (itv->has_cx23415 && itv->dec_mem != NULL) {
388 		IVTV_DEBUG_INFO("releasing dec_mem\n");
389 		iounmap(itv->dec_mem);
390 	}
391 	itv->dec_mem = NULL;
392 
393 	/* Release io memory */
394 	if (itv->enc_mem != NULL) {
395 		IVTV_DEBUG_INFO("releasing enc_mem\n");
396 		iounmap(itv->enc_mem);
397 		itv->enc_mem = NULL;
398 	}
399 }
400 
401 /* Hauppauge card? get values from tveeprom */
402 void ivtv_read_eeprom(struct ivtv *itv, struct tveeprom *tv)
403 {
404 	u8 eedata[256];
405 
406 	itv->i2c_client.addr = 0xA0 >> 1;
407 	tveeprom_read(&itv->i2c_client, eedata, sizeof(eedata));
408 	tveeprom_hauppauge_analog(tv, eedata);
409 }
410 
411 static void ivtv_process_eeprom(struct ivtv *itv)
412 {
413 	struct tveeprom tv;
414 	int pci_slot = PCI_SLOT(itv->pdev->devfn);
415 
416 	ivtv_read_eeprom(itv, &tv);
417 
418 	/* Many thanks to Steven Toth from Hauppauge for providing the
419 	   model numbers */
420 	switch (tv.model) {
421 		/* In a few cases the PCI subsystem IDs do not correctly
422 		   identify the card. A better method is to check the
423 		   model number from the eeprom instead. */
424 		case 30012 ... 30039:  /* Low profile PVR250 */
425 		case 32000 ... 32999:
426 		case 48000 ... 48099:  /* 48??? range are PVR250s with a cx23415 */
427 		case 48400 ... 48599:
428 			itv->card = ivtv_get_card(IVTV_CARD_PVR_250);
429 			break;
430 		case 48100 ... 48399:
431 		case 48600 ... 48999:
432 			itv->card = ivtv_get_card(IVTV_CARD_PVR_350);
433 			break;
434 		case 23000 ... 23999:  /* PVR500 */
435 		case 25000 ... 25999:  /* Low profile PVR150 */
436 		case 26000 ... 26999:  /* Regular PVR150 */
437 			itv->card = ivtv_get_card(IVTV_CARD_PVR_150);
438 			break;
439 		case 0:
440 			IVTV_ERR("Invalid EEPROM\n");
441 			return;
442 		default:
443 			IVTV_ERR("Unknown model %d, defaulting to PVR-150\n", tv.model);
444 			itv->card = ivtv_get_card(IVTV_CARD_PVR_150);
445 			break;
446 	}
447 
448 	switch (tv.model) {
449 		/* Old style PVR350 (with an saa7114) uses this input for
450 		   the tuner. */
451 		case 48254:
452 			itv->card = ivtv_get_card(IVTV_CARD_PVR_350_V1);
453 			break;
454 		default:
455 			break;
456 	}
457 
458 	itv->v4l2_cap = itv->card->v4l2_capabilities;
459 	itv->card_name = itv->card->name;
460 	itv->card_i2c = itv->card->i2c;
461 
462 	/* If this is a PVR500 then it should be possible to detect whether it is the
463 	   first or second unit by looking at the subsystem device ID: is bit 4 is
464 	   set, then it is the second unit (according to info from Hauppauge).
465 
466 	   However, while this works for most cards, I have seen a few PVR500 cards
467 	   where both units have the same subsystem ID.
468 
469 	   So instead I look at the reported 'PCI slot' (which is the slot on the PVR500
470 	   PCI bridge) and if it is 8, then it is assumed to be the first unit, otherwise
471 	   it is the second unit. It is possible that it is a different slot when ivtv is
472 	   used in Xen, in that case I ignore this card here. The worst that can happen
473 	   is that the card presents itself with a non-working radio device.
474 
475 	   This detection is needed since the eeprom reports incorrectly that a radio is
476 	   present on the second unit. */
477 	if (tv.model / 1000 == 23) {
478 		static const struct ivtv_card_tuner_i2c ivtv_i2c_radio = {
479 			.radio = { 0x60, I2C_CLIENT_END },
480 			.demod = { 0x43, I2C_CLIENT_END },
481 			.tv = { 0x61, I2C_CLIENT_END },
482 		};
483 
484 		itv->card_name = "WinTV PVR 500";
485 		itv->card_i2c = &ivtv_i2c_radio;
486 		if (pci_slot == 8 || pci_slot == 9) {
487 			int is_first = (pci_slot & 1) == 0;
488 
489 			itv->card_name = is_first ? "WinTV PVR 500 (unit #1)" :
490 						    "WinTV PVR 500 (unit #2)";
491 			if (!is_first) {
492 				IVTV_INFO("Correcting tveeprom data: no radio present on second unit\n");
493 				tv.has_radio = 0;
494 			}
495 		}
496 	}
497 	IVTV_INFO("Autodetected %s\n", itv->card_name);
498 
499 	switch (tv.tuner_hauppauge_model) {
500 		case 85:
501 		case 99:
502 		case 112:
503 			itv->pvr150_workaround = 1;
504 			break;
505 		default:
506 			break;
507 	}
508 	if (tv.tuner_type == TUNER_ABSENT)
509 		IVTV_ERR("tveeprom cannot autodetect tuner!\n");
510 
511 	if (itv->options.tuner == -1)
512 		itv->options.tuner = tv.tuner_type;
513 	if (itv->options.radio == -1)
514 		itv->options.radio = (tv.has_radio != 0);
515 	/* only enable newi2c if an IR blaster is present */
516 	if (itv->options.newi2c == -1 && tv.has_ir) {
517 		itv->options.newi2c = (tv.has_ir & 4) ? 1 : 0;
518 		if (itv->options.newi2c) {
519 		    IVTV_INFO("Reopen i2c bus for IR-blaster support\n");
520 		    exit_ivtv_i2c(itv);
521 		    init_ivtv_i2c(itv);
522 		}
523 	}
524 
525 	if (itv->std != 0)
526 		/* user specified tuner standard */
527 		return;
528 
529 	/* autodetect tuner standard */
530 	if (tv.tuner_formats & V4L2_STD_PAL) {
531 		IVTV_DEBUG_INFO("PAL tuner detected\n");
532 		itv->std |= V4L2_STD_PAL_BG | V4L2_STD_PAL_H;
533 	} else if (tv.tuner_formats & V4L2_STD_NTSC) {
534 		IVTV_DEBUG_INFO("NTSC tuner detected\n");
535 		itv->std |= V4L2_STD_NTSC_M;
536 	} else if (tv.tuner_formats & V4L2_STD_SECAM) {
537 		IVTV_DEBUG_INFO("SECAM tuner detected\n");
538 		itv->std |= V4L2_STD_SECAM_L;
539 	} else {
540 		IVTV_INFO("No tuner detected, default to NTSC-M\n");
541 		itv->std |= V4L2_STD_NTSC_M;
542 	}
543 }
544 
545 static v4l2_std_id ivtv_parse_std(struct ivtv *itv)
546 {
547 	switch (pal[0]) {
548 		case '6':
549 			tunertype = 0;
550 			return V4L2_STD_PAL_60;
551 		case 'b':
552 		case 'B':
553 		case 'g':
554 		case 'G':
555 		case 'h':
556 		case 'H':
557 			tunertype = 0;
558 			return V4L2_STD_PAL_BG | V4L2_STD_PAL_H;
559 		case 'n':
560 		case 'N':
561 			tunertype = 1;
562 			if (pal[1] == 'c' || pal[1] == 'C')
563 				return V4L2_STD_PAL_Nc;
564 			return V4L2_STD_PAL_N;
565 		case 'i':
566 		case 'I':
567 			tunertype = 0;
568 			return V4L2_STD_PAL_I;
569 		case 'd':
570 		case 'D':
571 		case 'k':
572 		case 'K':
573 			tunertype = 0;
574 			return V4L2_STD_PAL_DK;
575 		case 'M':
576 		case 'm':
577 			tunertype = 1;
578 			return V4L2_STD_PAL_M;
579 		case '-':
580 			break;
581 		default:
582 			IVTV_WARN("pal= argument not recognised\n");
583 			return 0;
584 	}
585 
586 	switch (secam[0]) {
587 		case 'b':
588 		case 'B':
589 		case 'g':
590 		case 'G':
591 		case 'h':
592 		case 'H':
593 			tunertype = 0;
594 			return V4L2_STD_SECAM_B | V4L2_STD_SECAM_G | V4L2_STD_SECAM_H;
595 		case 'd':
596 		case 'D':
597 		case 'k':
598 		case 'K':
599 			tunertype = 0;
600 			return V4L2_STD_SECAM_DK;
601 		case 'l':
602 		case 'L':
603 			tunertype = 0;
604 			if (secam[1] == 'C' || secam[1] == 'c')
605 				return V4L2_STD_SECAM_LC;
606 			return V4L2_STD_SECAM_L;
607 		case '-':
608 			break;
609 		default:
610 			IVTV_WARN("secam= argument not recognised\n");
611 			return 0;
612 	}
613 
614 	switch (ntsc[0]) {
615 		case 'm':
616 		case 'M':
617 			tunertype = 1;
618 			return V4L2_STD_NTSC_M;
619 		case 'j':
620 		case 'J':
621 			tunertype = 1;
622 			return V4L2_STD_NTSC_M_JP;
623 		case 'k':
624 		case 'K':
625 			tunertype = 1;
626 			return V4L2_STD_NTSC_M_KR;
627 		case '-':
628 			break;
629 		default:
630 			IVTV_WARN("ntsc= argument not recognised\n");
631 			return 0;
632 	}
633 
634 	/* no match found */
635 	return 0;
636 }
637 
638 static void ivtv_process_options(struct ivtv *itv)
639 {
640 	const char *chipname;
641 	int i, j;
642 
643 	itv->options.kilobytes[IVTV_ENC_STREAM_TYPE_MPG] = enc_mpg_buffers * 1024;
644 	itv->options.kilobytes[IVTV_ENC_STREAM_TYPE_YUV] = enc_yuv_buffers * 1024;
645 	itv->options.kilobytes[IVTV_ENC_STREAM_TYPE_VBI] = enc_vbi_buffers * 1024;
646 	itv->options.kilobytes[IVTV_ENC_STREAM_TYPE_PCM] = enc_pcm_buffers;
647 	itv->options.kilobytes[IVTV_DEC_STREAM_TYPE_MPG] = dec_mpg_buffers * 1024;
648 	itv->options.kilobytes[IVTV_DEC_STREAM_TYPE_YUV] = dec_yuv_buffers * 1024;
649 	itv->options.kilobytes[IVTV_DEC_STREAM_TYPE_VBI] = dec_vbi_buffers;
650 	itv->options.cardtype = cardtype[itv->instance];
651 	itv->options.tuner = tuner[itv->instance];
652 	itv->options.radio = radio[itv->instance];
653 
654 	itv->options.i2c_clock_period = i2c_clock_period[itv->instance];
655 	if (itv->options.i2c_clock_period == -1)
656 		itv->options.i2c_clock_period = IVTV_DEFAULT_I2C_CLOCK_PERIOD;
657 	else if (itv->options.i2c_clock_period < 10)
658 		itv->options.i2c_clock_period = 10;
659 	else if (itv->options.i2c_clock_period > 4500)
660 		itv->options.i2c_clock_period = 4500;
661 
662 	itv->options.newi2c = newi2c;
663 	if (tunertype < -1 || tunertype > 1) {
664 		IVTV_WARN("Invalid tunertype argument, will autodetect instead\n");
665 		tunertype = -1;
666 	}
667 	itv->std = ivtv_parse_std(itv);
668 	if (itv->std == 0 && tunertype >= 0)
669 		itv->std = tunertype ? V4L2_STD_MN : (V4L2_STD_ALL & ~V4L2_STD_MN);
670 	itv->has_cx23415 = (itv->pdev->device == PCI_DEVICE_ID_IVTV15);
671 	chipname = itv->has_cx23415 ? "cx23415" : "cx23416";
672 	if (itv->options.cardtype == -1) {
673 		IVTV_INFO("Ignore card (detected %s based chip)\n", chipname);
674 		return;
675 	}
676 	if ((itv->card = ivtv_get_card(itv->options.cardtype - 1))) {
677 		IVTV_INFO("User specified %s card (detected %s based chip)\n",
678 				itv->card->name, chipname);
679 	} else if (itv->options.cardtype != 0) {
680 		IVTV_ERR("Unknown user specified type, trying to autodetect card\n");
681 	}
682 	if (itv->card == NULL) {
683 		if (itv->pdev->subsystem_vendor == IVTV_PCI_ID_HAUPPAUGE ||
684 		    itv->pdev->subsystem_vendor == IVTV_PCI_ID_HAUPPAUGE_ALT1 ||
685 		    itv->pdev->subsystem_vendor == IVTV_PCI_ID_HAUPPAUGE_ALT2) {
686 			itv->card = ivtv_get_card(itv->has_cx23415 ? IVTV_CARD_PVR_350 : IVTV_CARD_PVR_150);
687 			IVTV_INFO("Autodetected Hauppauge card (%s based)\n",
688 					chipname);
689 		}
690 	}
691 	if (itv->card == NULL) {
692 		for (i = 0; (itv->card = ivtv_get_card(i)); i++) {
693 			if (itv->card->pci_list == NULL)
694 				continue;
695 			for (j = 0; itv->card->pci_list[j].device; j++) {
696 				if (itv->pdev->device !=
697 				    itv->card->pci_list[j].device)
698 					continue;
699 				if (itv->pdev->subsystem_vendor !=
700 				    itv->card->pci_list[j].subsystem_vendor)
701 					continue;
702 				if (itv->pdev->subsystem_device !=
703 				    itv->card->pci_list[j].subsystem_device)
704 					continue;
705 				IVTV_INFO("Autodetected %s card (%s based)\n",
706 						itv->card->name, chipname);
707 				goto done;
708 			}
709 		}
710 	}
711 done:
712 
713 	if (itv->card == NULL) {
714 		itv->card = ivtv_get_card(IVTV_CARD_PVR_150);
715 		IVTV_ERR("Unknown card: vendor/device: [%04x:%04x]\n",
716 		     itv->pdev->vendor, itv->pdev->device);
717 		IVTV_ERR("              subsystem vendor/device: [%04x:%04x]\n",
718 		     itv->pdev->subsystem_vendor, itv->pdev->subsystem_device);
719 		IVTV_ERR("              %s based\n", chipname);
720 		IVTV_ERR("Defaulting to %s card\n", itv->card->name);
721 		IVTV_ERR("Please mail the vendor/device and subsystem vendor/device IDs and what kind of\n");
722 		IVTV_ERR("card you have to the linux-media mailinglist (www.linuxtv.org)\n");
723 		IVTV_ERR("Prefix your subject line with [UNKNOWN IVTV CARD].\n");
724 	}
725 	itv->v4l2_cap = itv->card->v4l2_capabilities;
726 	itv->card_name = itv->card->name;
727 	itv->card_i2c = itv->card->i2c;
728 }
729 
730 /* Precondition: the ivtv structure has been memset to 0. Only
731    the dev and num fields have been filled in.
732    No assumptions on the card type may be made here (see ivtv_init_struct2
733    for that).
734  */
735 static int ivtv_init_struct1(struct ivtv *itv)
736 {
737 	itv->base_addr = pci_resource_start(itv->pdev, 0);
738 	itv->enc_mbox.max_mbox = 2; /* the encoder has 3 mailboxes (0-2) */
739 	itv->dec_mbox.max_mbox = 1; /* the decoder has 2 mailboxes (0-1) */
740 
741 	mutex_init(&itv->serialize_lock);
742 	mutex_init(&itv->i2c_bus_lock);
743 	mutex_init(&itv->udma.lock);
744 
745 	spin_lock_init(&itv->lock);
746 	spin_lock_init(&itv->dma_reg_lock);
747 
748 	kthread_init_worker(&itv->irq_worker);
749 	itv->irq_worker_task = kthread_run(kthread_worker_fn, &itv->irq_worker,
750 					   "%s", itv->v4l2_dev.name);
751 	if (IS_ERR(itv->irq_worker_task)) {
752 		IVTV_ERR("Could not create ivtv task\n");
753 		return -1;
754 	}
755 	/* must use the FIFO scheduler as it is realtime sensitive */
756 	sched_set_fifo(itv->irq_worker_task);
757 
758 	kthread_init_work(&itv->irq_work, ivtv_irq_work_handler);
759 
760 	/* Initial settings */
761 	itv->cxhdl.port = CX2341X_PORT_MEMORY;
762 	itv->cxhdl.capabilities = CX2341X_CAP_HAS_SLICED_VBI;
763 	init_waitqueue_head(&itv->eos_waitq);
764 	init_waitqueue_head(&itv->event_waitq);
765 	init_waitqueue_head(&itv->vsync_waitq);
766 	init_waitqueue_head(&itv->dma_waitq);
767 	timer_setup(&itv->dma_timer, ivtv_unfinished_dma, 0);
768 
769 	itv->cur_dma_stream = -1;
770 	itv->cur_pio_stream = -1;
771 
772 	/* Ctrls */
773 	itv->speed = 1000;
774 
775 	/* VBI */
776 	itv->vbi.in.type = V4L2_BUF_TYPE_VBI_CAPTURE;
777 	itv->vbi.sliced_in = &itv->vbi.in.fmt.sliced;
778 
779 	/* Init the sg table for osd/yuv output */
780 	sg_init_table(itv->udma.SGlist, IVTV_DMA_SG_OSD_ENT);
781 
782 	/* OSD */
783 	itv->osd_global_alpha_state = 1;
784 	itv->osd_global_alpha = 255;
785 
786 	/* YUV */
787 	atomic_set(&itv->yuv_info.next_dma_frame, -1);
788 	itv->yuv_info.lace_mode = ivtv_yuv_mode;
789 	itv->yuv_info.lace_threshold = ivtv_yuv_threshold;
790 	itv->yuv_info.max_frames_buffered = 3;
791 	itv->yuv_info.track_osd = 1;
792 	return 0;
793 }
794 
795 /* Second initialization part. Here the card type has been
796    autodetected. */
797 static void ivtv_init_struct2(struct ivtv *itv)
798 {
799 	int i;
800 
801 	for (i = 0; i < IVTV_CARD_MAX_VIDEO_INPUTS; i++)
802 		if (itv->card->video_inputs[i].video_type == 0)
803 			break;
804 	itv->nof_inputs = i;
805 	for (i = 0; i < IVTV_CARD_MAX_AUDIO_INPUTS; i++)
806 		if (itv->card->audio_inputs[i].audio_type == 0)
807 			break;
808 	itv->nof_audio_inputs = i;
809 
810 	if (itv->card->hw_all & IVTV_HW_CX25840) {
811 		itv->vbi.sliced_size = 288;  /* multiple of 16, real size = 284 */
812 	} else {
813 		itv->vbi.sliced_size = 64;   /* multiple of 16, real size = 52 */
814 	}
815 
816 	/* Find tuner input */
817 	for (i = 0; i < itv->nof_inputs; i++) {
818 		if (itv->card->video_inputs[i].video_type ==
819 				IVTV_CARD_INPUT_VID_TUNER)
820 			break;
821 	}
822 	if (i >= itv->nof_inputs)
823 		i = 0;
824 	itv->active_input = i;
825 	itv->audio_input = itv->card->video_inputs[i].audio_index;
826 }
827 
828 static int ivtv_setup_pci(struct ivtv *itv, struct pci_dev *pdev,
829 			  const struct pci_device_id *pci_id)
830 {
831 	u16 cmd;
832 	unsigned char pci_latency;
833 
834 	IVTV_DEBUG_INFO("Enabling pci device\n");
835 
836 	if (pci_enable_device(pdev)) {
837 		IVTV_ERR("Can't enable device!\n");
838 		return -EIO;
839 	}
840 	if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) {
841 		IVTV_ERR("No suitable DMA available.\n");
842 		return -EIO;
843 	}
844 	if (!request_mem_region(itv->base_addr, IVTV_ENCODER_SIZE, "ivtv encoder")) {
845 		IVTV_ERR("Cannot request encoder memory region.\n");
846 		return -EIO;
847 	}
848 
849 	if (!request_mem_region(itv->base_addr + IVTV_REG_OFFSET,
850 				IVTV_REG_SIZE, "ivtv registers")) {
851 		IVTV_ERR("Cannot request register memory region.\n");
852 		release_mem_region(itv->base_addr, IVTV_ENCODER_SIZE);
853 		return -EIO;
854 	}
855 
856 	if (itv->has_cx23415 &&
857 	    !request_mem_region(itv->base_addr + IVTV_DECODER_OFFSET,
858 				IVTV_DECODER_SIZE, "ivtv decoder")) {
859 		IVTV_ERR("Cannot request decoder memory region.\n");
860 		release_mem_region(itv->base_addr, IVTV_ENCODER_SIZE);
861 		release_mem_region(itv->base_addr + IVTV_REG_OFFSET, IVTV_REG_SIZE);
862 		return -EIO;
863 	}
864 
865 	/* Check for bus mastering */
866 	pci_read_config_word(pdev, PCI_COMMAND, &cmd);
867 	if (!(cmd & PCI_COMMAND_MASTER)) {
868 		IVTV_DEBUG_INFO("Attempting to enable Bus Mastering\n");
869 		pci_set_master(pdev);
870 		pci_read_config_word(pdev, PCI_COMMAND, &cmd);
871 		if (!(cmd & PCI_COMMAND_MASTER)) {
872 			IVTV_ERR("Bus Mastering is not enabled\n");
873 			if (itv->has_cx23415)
874 				release_mem_region(itv->base_addr + IVTV_DECODER_OFFSET,
875 						   IVTV_DECODER_SIZE);
876 			release_mem_region(itv->base_addr, IVTV_ENCODER_SIZE);
877 			release_mem_region(itv->base_addr + IVTV_REG_OFFSET, IVTV_REG_SIZE);
878 			return -ENXIO;
879 		}
880 	}
881 	IVTV_DEBUG_INFO("Bus Mastering Enabled.\n");
882 
883 	pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &pci_latency);
884 
885 	if (pci_latency < 64 && ivtv_pci_latency) {
886 		IVTV_INFO("Unreasonably low latency timer, setting to 64 (was %d)\n",
887 			  pci_latency);
888 		pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 64);
889 		pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &pci_latency);
890 	}
891 	/* This config space value relates to DMA latencies. The
892 	   default value 0x8080 is too low however and will lead
893 	   to DMA errors. 0xffff is the max value which solves
894 	   these problems. */
895 	pci_write_config_dword(pdev, 0x40, 0xffff);
896 
897 	IVTV_DEBUG_INFO("%d (rev %d) at %02x:%02x.%x, irq: %d, latency: %d, memory: 0x%llx\n",
898 		   pdev->device, pdev->revision, pdev->bus->number,
899 		   PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn),
900 		   pdev->irq, pci_latency, (u64)itv->base_addr);
901 
902 	return 0;
903 }
904 
905 static void ivtv_load_and_init_modules(struct ivtv *itv)
906 {
907 	u32 hw = itv->card->hw_all;
908 	unsigned i;
909 
910 	/* check which i2c devices are actually found */
911 	for (i = 0; i < 32; i++) {
912 		u32 device = BIT(i);
913 
914 		if (!(device & hw))
915 			continue;
916 		if (device == IVTV_HW_GPIO || device == IVTV_HW_TVEEPROM) {
917 			/* GPIO and TVEEPROM do not use i2c probing */
918 			itv->hw_flags |= device;
919 			continue;
920 		}
921 		if (ivtv_i2c_register(itv, i) == 0)
922 			itv->hw_flags |= device;
923 	}
924 
925 	/* probe for legacy IR controllers that aren't in card definitions */
926 	if ((itv->hw_flags & IVTV_HW_IR_ANY) == 0)
927 		ivtv_i2c_new_ir_legacy(itv);
928 
929 	if (itv->card->hw_all & IVTV_HW_CX25840)
930 		itv->sd_video = ivtv_find_hw(itv, IVTV_HW_CX25840);
931 	else if (itv->card->hw_all & IVTV_HW_SAA717X)
932 		itv->sd_video = ivtv_find_hw(itv, IVTV_HW_SAA717X);
933 	else if (itv->card->hw_all & IVTV_HW_SAA7114)
934 		itv->sd_video = ivtv_find_hw(itv, IVTV_HW_SAA7114);
935 	else
936 		itv->sd_video = ivtv_find_hw(itv, IVTV_HW_SAA7115);
937 	itv->sd_audio = ivtv_find_hw(itv, itv->card->hw_audio_ctrl);
938 	itv->sd_muxer = ivtv_find_hw(itv, itv->card->hw_muxer);
939 
940 	hw = itv->hw_flags;
941 
942 	if (itv->card->type == IVTV_CARD_CX23416GYC) {
943 		/* Several variations of this card exist, detect which card
944 		   type should be used. */
945 		if ((hw & (IVTV_HW_UPD64031A | IVTV_HW_UPD6408X)) == 0)
946 			itv->card = ivtv_get_card(IVTV_CARD_CX23416GYC_NOGRYCS);
947 		else if ((hw & IVTV_HW_UPD64031A) == 0)
948 			itv->card = ivtv_get_card(IVTV_CARD_CX23416GYC_NOGR);
949 	}
950 	else if (itv->card->type == IVTV_CARD_GV_MVPRX ||
951 		 itv->card->type == IVTV_CARD_GV_MVPRX2E) {
952 		/* The crystal frequency of GVMVPRX is 24.576MHz */
953 		v4l2_subdev_call(itv->sd_video, video, s_crystal_freq,
954 			SAA7115_FREQ_24_576_MHZ, SAA7115_FREQ_FL_UCGC);
955 	}
956 
957 	if (hw & IVTV_HW_CX25840) {
958 		itv->vbi.raw_decoder_line_size = 1444;
959 		itv->vbi.raw_decoder_sav_odd_field = 0x20;
960 		itv->vbi.raw_decoder_sav_even_field = 0x60;
961 		itv->vbi.sliced_decoder_line_size = 272;
962 		itv->vbi.sliced_decoder_sav_odd_field = 0xB0;
963 		itv->vbi.sliced_decoder_sav_even_field = 0xF0;
964 	}
965 
966 	if (hw & IVTV_HW_SAA711X) {
967 		/* determine the exact saa711x model */
968 		itv->hw_flags &= ~IVTV_HW_SAA711X;
969 
970 		if (strstr(itv->sd_video->name, "saa7114")) {
971 			itv->hw_flags |= IVTV_HW_SAA7114;
972 			/* VBI is not yet supported by the saa7114 driver. */
973 			itv->v4l2_cap &= ~(V4L2_CAP_SLICED_VBI_CAPTURE|V4L2_CAP_VBI_CAPTURE);
974 		} else {
975 			itv->hw_flags |= IVTV_HW_SAA7115;
976 		}
977 		itv->vbi.raw_decoder_line_size = 1443;
978 		itv->vbi.raw_decoder_sav_odd_field = 0x25;
979 		itv->vbi.raw_decoder_sav_even_field = 0x62;
980 		itv->vbi.sliced_decoder_line_size = 51;
981 		itv->vbi.sliced_decoder_sav_odd_field = 0xAB;
982 		itv->vbi.sliced_decoder_sav_even_field = 0xEC;
983 	}
984 
985 	if (hw & IVTV_HW_SAA717X) {
986 		itv->vbi.raw_decoder_line_size = 1443;
987 		itv->vbi.raw_decoder_sav_odd_field = 0x25;
988 		itv->vbi.raw_decoder_sav_even_field = 0x62;
989 		itv->vbi.sliced_decoder_line_size = 51;
990 		itv->vbi.sliced_decoder_sav_odd_field = 0xAB;
991 		itv->vbi.sliced_decoder_sav_even_field = 0xEC;
992 	}
993 }
994 
995 static int ivtv_probe(struct pci_dev *pdev, const struct pci_device_id *pci_id)
996 {
997 	int retval = 0;
998 	int vbi_buf_size;
999 	struct ivtv *itv;
1000 
1001 	itv = kzalloc(sizeof(struct ivtv), GFP_KERNEL);
1002 	if (itv == NULL)
1003 		return -ENOMEM;
1004 	itv->pdev = pdev;
1005 	itv->instance = v4l2_device_set_name(&itv->v4l2_dev, "ivtv",
1006 						&ivtv_instance);
1007 
1008 	retval = v4l2_device_register(&pdev->dev, &itv->v4l2_dev);
1009 	if (retval) {
1010 		kfree(itv);
1011 		return retval;
1012 	}
1013 	IVTV_INFO("Initializing card %d\n", itv->instance);
1014 
1015 	ivtv_process_options(itv);
1016 	if (itv->options.cardtype == -1) {
1017 		retval = -ENODEV;
1018 		goto err;
1019 	}
1020 	if (ivtv_init_struct1(itv)) {
1021 		retval = -ENOMEM;
1022 		goto err;
1023 	}
1024 	retval = cx2341x_handler_init(&itv->cxhdl, 50);
1025 	if (retval)
1026 		goto err;
1027 	itv->v4l2_dev.ctrl_handler = &itv->cxhdl.hdl;
1028 	itv->cxhdl.ops = &ivtv_cxhdl_ops;
1029 	itv->cxhdl.priv = itv;
1030 	itv->cxhdl.func = ivtv_api_func;
1031 
1032 	IVTV_DEBUG_INFO("base addr: 0x%llx\n", (u64)itv->base_addr);
1033 
1034 	/* PCI Device Setup */
1035 	retval = ivtv_setup_pci(itv, pdev, pci_id);
1036 	if (retval == -EIO)
1037 		goto free_worker;
1038 	if (retval == -ENXIO)
1039 		goto free_mem;
1040 
1041 	/* map io memory */
1042 	IVTV_DEBUG_INFO("attempting ioremap at 0x%llx len 0x%08x\n",
1043 		   (u64)itv->base_addr + IVTV_ENCODER_OFFSET, IVTV_ENCODER_SIZE);
1044 	itv->enc_mem = ioremap(itv->base_addr + IVTV_ENCODER_OFFSET,
1045 				       IVTV_ENCODER_SIZE);
1046 	if (!itv->enc_mem) {
1047 		IVTV_ERR("ioremap failed. Can't get a window into CX23415/6 encoder memory\n");
1048 		IVTV_ERR("Each capture card with a CX23415/6 needs 8 MB of vmalloc address space for this window\n");
1049 		IVTV_ERR("Check the output of 'grep Vmalloc /proc/meminfo'\n");
1050 		IVTV_ERR("Use the vmalloc= kernel command line option to set VmallocTotal to a larger value\n");
1051 		retval = -ENOMEM;
1052 		goto free_mem;
1053 	}
1054 
1055 	if (itv->has_cx23415) {
1056 		IVTV_DEBUG_INFO("attempting ioremap at 0x%llx len 0x%08x\n",
1057 				(u64)itv->base_addr + IVTV_DECODER_OFFSET, IVTV_DECODER_SIZE);
1058 		itv->dec_mem = ioremap(itv->base_addr + IVTV_DECODER_OFFSET,
1059 				IVTV_DECODER_SIZE);
1060 		if (!itv->dec_mem) {
1061 			IVTV_ERR("ioremap failed. Can't get a window into CX23415 decoder memory\n");
1062 			IVTV_ERR("Each capture card with a CX23415 needs 8 MB of vmalloc address space for this window\n");
1063 			IVTV_ERR("Check the output of 'grep Vmalloc /proc/meminfo'\n");
1064 			IVTV_ERR("Use the vmalloc= kernel command line option to set VmallocTotal to a larger value\n");
1065 			retval = -ENOMEM;
1066 			goto free_mem;
1067 		}
1068 	}
1069 	else {
1070 		itv->dec_mem = itv->enc_mem;
1071 	}
1072 
1073 	/* map registers memory */
1074 	IVTV_DEBUG_INFO("attempting ioremap at 0x%llx len 0x%08x\n",
1075 		   (u64)itv->base_addr + IVTV_REG_OFFSET, IVTV_REG_SIZE);
1076 	itv->reg_mem =
1077 	    ioremap(itv->base_addr + IVTV_REG_OFFSET, IVTV_REG_SIZE);
1078 	if (!itv->reg_mem) {
1079 		IVTV_ERR("ioremap failed. Can't get a window into CX23415/6 register space\n");
1080 		IVTV_ERR("Each capture card with a CX23415/6 needs 64 kB of vmalloc address space for this window\n");
1081 		IVTV_ERR("Check the output of 'grep Vmalloc /proc/meminfo'\n");
1082 		IVTV_ERR("Use the vmalloc= kernel command line option to set VmallocTotal to a larger value\n");
1083 		retval = -ENOMEM;
1084 		goto free_io;
1085 	}
1086 
1087 	retval = ivtv_gpio_init(itv);
1088 	if (retval)
1089 		goto free_io;
1090 
1091 	/* active i2c  */
1092 	IVTV_DEBUG_INFO("activating i2c...\n");
1093 	if (init_ivtv_i2c(itv)) {
1094 		IVTV_ERR("Could not initialize i2c\n");
1095 		goto free_io;
1096 	}
1097 
1098 	if (itv->card->hw_all & IVTV_HW_TVEEPROM) {
1099 		/* Based on the model number the cardtype may be changed.
1100 		   The PCI IDs are not always reliable. */
1101 		ivtv_process_eeprom(itv);
1102 	}
1103 	if (itv->card->comment)
1104 		IVTV_INFO("%s", itv->card->comment);
1105 	if (itv->card->v4l2_capabilities == 0) {
1106 		/* card was detected but is not supported */
1107 		retval = -ENODEV;
1108 		goto free_i2c;
1109 	}
1110 
1111 	if (itv->std == 0) {
1112 		itv->std = V4L2_STD_NTSC_M;
1113 	}
1114 
1115 	if (itv->options.tuner == -1) {
1116 		int i;
1117 
1118 		for (i = 0; i < IVTV_CARD_MAX_TUNERS; i++) {
1119 			if ((itv->std & itv->card->tuners[i].std) == 0)
1120 				continue;
1121 			itv->options.tuner = itv->card->tuners[i].tuner;
1122 			break;
1123 		}
1124 	}
1125 	/* if no tuner was found, then pick the first tuner in the card list */
1126 	if (itv->options.tuner == -1 && itv->card->tuners[0].std) {
1127 		itv->std = itv->card->tuners[0].std;
1128 		if (itv->std & V4L2_STD_PAL)
1129 			itv->std = V4L2_STD_PAL_BG | V4L2_STD_PAL_H;
1130 		else if (itv->std & V4L2_STD_NTSC)
1131 			itv->std = V4L2_STD_NTSC_M;
1132 		else if (itv->std & V4L2_STD_SECAM)
1133 			itv->std = V4L2_STD_SECAM_L;
1134 		itv->options.tuner = itv->card->tuners[0].tuner;
1135 	}
1136 	if (itv->options.radio == -1)
1137 		itv->options.radio = (itv->card->radio_input.audio_type != 0);
1138 
1139 	/* The card is now fully identified, continue with card-specific
1140 	   initialization. */
1141 	ivtv_init_struct2(itv);
1142 
1143 	ivtv_load_and_init_modules(itv);
1144 
1145 	if (itv->std & V4L2_STD_525_60) {
1146 		itv->is_60hz = 1;
1147 		itv->is_out_60hz = 1;
1148 	} else {
1149 		itv->is_50hz = 1;
1150 		itv->is_out_50hz = 1;
1151 	}
1152 
1153 	itv->yuv_info.osd_full_w = 720;
1154 	itv->yuv_info.osd_full_h = itv->is_out_50hz ? 576 : 480;
1155 	itv->yuv_info.v4l2_src_w = itv->yuv_info.osd_full_w;
1156 	itv->yuv_info.v4l2_src_h = itv->yuv_info.osd_full_h;
1157 
1158 	cx2341x_handler_set_50hz(&itv->cxhdl, itv->is_50hz);
1159 
1160 	itv->stream_buf_size[IVTV_ENC_STREAM_TYPE_MPG] = 0x08000;
1161 	itv->stream_buf_size[IVTV_ENC_STREAM_TYPE_PCM] = 0x01200;
1162 	itv->stream_buf_size[IVTV_DEC_STREAM_TYPE_MPG] = 0x10000;
1163 	itv->stream_buf_size[IVTV_DEC_STREAM_TYPE_YUV] = 0x10000;
1164 	itv->stream_buf_size[IVTV_ENC_STREAM_TYPE_YUV] = 0x08000;
1165 
1166 	/* Setup VBI Raw Size. Should be big enough to hold PAL.
1167 	   It is possible to switch between PAL and NTSC, so we need to
1168 	   take the largest size here. */
1169 	/* 1456 is multiple of 16, real size = 1444 */
1170 	itv->vbi.raw_size = 1456;
1171 	/* We use a buffer size of 1/2 of the total size needed for a
1172 	   frame. This is actually very useful, since we now receive
1173 	   a field at a time and that makes 'compressing' the raw data
1174 	   down to size by stripping off the SAV codes a lot easier.
1175 	   Note: having two different buffer sizes prevents standard
1176 	   switching on the fly. We need to find a better solution... */
1177 	vbi_buf_size = itv->vbi.raw_size * (itv->is_60hz ? 24 : 36) / 2;
1178 	itv->stream_buf_size[IVTV_ENC_STREAM_TYPE_VBI] = vbi_buf_size;
1179 	itv->stream_buf_size[IVTV_DEC_STREAM_TYPE_VBI] = sizeof(struct v4l2_sliced_vbi_data) * 36;
1180 
1181 	if (itv->options.radio > 0)
1182 		itv->v4l2_cap |= V4L2_CAP_RADIO;
1183 
1184 	if (itv->options.tuner > -1) {
1185 		struct tuner_setup setup;
1186 
1187 		setup.addr = ADDR_UNSET;
1188 		setup.type = itv->options.tuner;
1189 		setup.mode_mask = T_ANALOG_TV;  /* matches TV tuners */
1190 		if (itv->options.radio > 0)
1191 			setup.mode_mask |= T_RADIO;
1192 		setup.tuner_callback = (setup.type == TUNER_XC2028) ?
1193 			ivtv_reset_tuner_gpio : NULL;
1194 		ivtv_call_all(itv, tuner, s_type_addr, &setup);
1195 		if (setup.type == TUNER_XC2028) {
1196 			static struct xc2028_ctrl ctrl = {
1197 				.fname = XC2028_DEFAULT_FIRMWARE,
1198 				.max_len = 64,
1199 			};
1200 			struct v4l2_priv_tun_config cfg = {
1201 				.tuner = itv->options.tuner,
1202 				.priv = &ctrl,
1203 			};
1204 			ivtv_call_all(itv, tuner, s_config, &cfg);
1205 		}
1206 	}
1207 
1208 	/* The tuner is fixed to the standard. The other inputs (e.g. S-Video)
1209 	   are not. */
1210 	itv->tuner_std = itv->std;
1211 
1212 	if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) {
1213 		struct v4l2_ctrl_handler *hdl = itv->v4l2_dev.ctrl_handler;
1214 
1215 		itv->ctrl_pts = v4l2_ctrl_new_std(hdl, &ivtv_hdl_out_ops,
1216 				V4L2_CID_MPEG_VIDEO_DEC_PTS, 0, 0, 0, 0);
1217 		itv->ctrl_frame = v4l2_ctrl_new_std(hdl, &ivtv_hdl_out_ops,
1218 				V4L2_CID_MPEG_VIDEO_DEC_FRAME, 0, 0, 0, 0);
1219 		/* Note: V4L2_MPEG_AUDIO_DEC_PLAYBACK_AUTO is not supported,
1220 		   mask that menu item. */
1221 		itv->ctrl_audio_playback =
1222 			v4l2_ctrl_new_std_menu(hdl, &ivtv_hdl_out_ops,
1223 				V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK,
1224 				V4L2_MPEG_AUDIO_DEC_PLAYBACK_SWAPPED_STEREO,
1225 				1 << V4L2_MPEG_AUDIO_DEC_PLAYBACK_AUTO,
1226 				V4L2_MPEG_AUDIO_DEC_PLAYBACK_STEREO);
1227 		itv->ctrl_audio_multilingual_playback =
1228 			v4l2_ctrl_new_std_menu(hdl, &ivtv_hdl_out_ops,
1229 				V4L2_CID_MPEG_AUDIO_DEC_MULTILINGUAL_PLAYBACK,
1230 				V4L2_MPEG_AUDIO_DEC_PLAYBACK_SWAPPED_STEREO,
1231 				1 << V4L2_MPEG_AUDIO_DEC_PLAYBACK_AUTO,
1232 				V4L2_MPEG_AUDIO_DEC_PLAYBACK_LEFT);
1233 		if (hdl->error) {
1234 			retval = hdl->error;
1235 			goto free_i2c;
1236 		}
1237 		v4l2_ctrl_cluster(2, &itv->ctrl_pts);
1238 		v4l2_ctrl_cluster(2, &itv->ctrl_audio_playback);
1239 		ivtv_call_all(itv, video, s_std_output, itv->std);
1240 		/* Turn off the output signal. The mpeg decoder is not yet
1241 		   active so without this you would get a green image until the
1242 		   mpeg decoder becomes active. */
1243 		ivtv_call_hw(itv, IVTV_HW_SAA7127, video, s_stream, 0);
1244 	}
1245 
1246 	/* clear interrupt mask, effectively disabling interrupts */
1247 	ivtv_set_irq_mask(itv, 0xffffffff);
1248 
1249 	/* Register IRQ */
1250 	retval = request_irq(itv->pdev->irq, ivtv_irq_handler,
1251 	     IRQF_SHARED, itv->v4l2_dev.name, (void *)itv);
1252 	if (retval) {
1253 		IVTV_ERR("Failed to register irq %d\n", retval);
1254 		goto free_i2c;
1255 	}
1256 
1257 	retval = ivtv_streams_setup(itv);
1258 	if (retval) {
1259 		IVTV_ERR("Error %d setting up streams\n", retval);
1260 		goto free_irq;
1261 	}
1262 	retval = ivtv_streams_register(itv);
1263 	if (retval) {
1264 		IVTV_ERR("Error %d registering devices\n", retval);
1265 		goto free_streams;
1266 	}
1267 	IVTV_INFO("Initialized card: %s\n", itv->card_name);
1268 
1269 	/* Load ivtv submodules (ivtv-alsa) */
1270 	request_modules(itv);
1271 	return 0;
1272 
1273 free_streams:
1274 	ivtv_streams_cleanup(itv);
1275 free_irq:
1276 	free_irq(itv->pdev->irq, (void *)itv);
1277 free_i2c:
1278 	v4l2_ctrl_handler_free(&itv->cxhdl.hdl);
1279 	exit_ivtv_i2c(itv);
1280 free_io:
1281 	ivtv_iounmap(itv);
1282 free_mem:
1283 	release_mem_region(itv->base_addr, IVTV_ENCODER_SIZE);
1284 	release_mem_region(itv->base_addr + IVTV_REG_OFFSET, IVTV_REG_SIZE);
1285 	if (itv->has_cx23415)
1286 		release_mem_region(itv->base_addr + IVTV_DECODER_OFFSET, IVTV_DECODER_SIZE);
1287 free_worker:
1288 	kthread_stop(itv->irq_worker_task);
1289 err:
1290 	if (retval == 0)
1291 		retval = -ENODEV;
1292 	IVTV_ERR("Error %d on initialization\n", retval);
1293 
1294 	v4l2_device_unregister(&itv->v4l2_dev);
1295 	kfree(itv);
1296 	return retval;
1297 }
1298 
1299 int ivtv_init_on_first_open(struct ivtv *itv)
1300 {
1301 	struct v4l2_frequency vf;
1302 	/* Needed to call ioctls later */
1303 	struct ivtv_open_id fh;
1304 	int fw_retry_count = 3;
1305 	int video_input;
1306 
1307 	fh.itv = itv;
1308 	fh.type = IVTV_ENC_STREAM_TYPE_MPG;
1309 
1310 	if (test_bit(IVTV_F_I_FAILED, &itv->i_flags))
1311 		return -ENXIO;
1312 
1313 	if (test_and_set_bit(IVTV_F_I_INITED, &itv->i_flags))
1314 		return 0;
1315 
1316 	while (--fw_retry_count > 0) {
1317 		/* load firmware */
1318 		if (ivtv_firmware_init(itv) == 0)
1319 			break;
1320 		if (fw_retry_count > 1)
1321 			IVTV_WARN("Retry loading firmware\n");
1322 	}
1323 
1324 	if (fw_retry_count == 0) {
1325 		set_bit(IVTV_F_I_FAILED, &itv->i_flags);
1326 		return -ENXIO;
1327 	}
1328 
1329 	/* Try and get firmware versions */
1330 	IVTV_DEBUG_INFO("Getting firmware version..\n");
1331 	ivtv_firmware_versions(itv);
1332 
1333 	if (itv->card->hw_all & IVTV_HW_CX25840)
1334 		v4l2_subdev_call(itv->sd_video, core, load_fw);
1335 
1336 	vf.tuner = 0;
1337 	vf.type = V4L2_TUNER_ANALOG_TV;
1338 	vf.frequency = 6400; /* the tuner 'baseline' frequency */
1339 
1340 	/* Set initial frequency. For PAL/SECAM broadcasts no
1341 	   'default' channel exists AFAIK. */
1342 	if (itv->std == V4L2_STD_NTSC_M_JP) {
1343 		vf.frequency = 1460;	/* ch. 1 91250*16/1000 */
1344 	}
1345 	else if (itv->std & V4L2_STD_NTSC_M) {
1346 		vf.frequency = 1076;	/* ch. 4 67250*16/1000 */
1347 	}
1348 
1349 	video_input = itv->active_input;
1350 	itv->active_input++;	/* Force update of input */
1351 	ivtv_s_input(NULL, &fh, video_input);
1352 
1353 	/* Let the VIDIOC_S_STD ioctl do all the work, keeps the code
1354 	   in one place. */
1355 	itv->std++;		/* Force full standard initialization */
1356 	itv->std_out = itv->std;
1357 	ivtv_s_frequency(NULL, &fh, &vf);
1358 
1359 	if (itv->card->v4l2_capabilities & V4L2_CAP_VIDEO_OUTPUT) {
1360 		/* Turn on the TV-out: ivtv_init_mpeg_decoder() initializes
1361 		   the mpeg decoder so now the saa7127 receives a proper
1362 		   signal. */
1363 		ivtv_call_hw(itv, IVTV_HW_SAA7127, video, s_stream, 1);
1364 		ivtv_init_mpeg_decoder(itv);
1365 	}
1366 
1367 	/* On a cx23416 this seems to be able to enable DMA to the chip? */
1368 	if (!itv->has_cx23415)
1369 		write_reg_sync(0x03, IVTV_REG_DMACONTROL);
1370 
1371 	ivtv_s_std_enc(itv, itv->tuner_std);
1372 
1373 	/* Default interrupts enabled. For the PVR350 this includes the
1374 	   decoder VSYNC interrupt, which is always on. It is not only used
1375 	   during decoding but also by the OSD.
1376 	   Some old PVR250 cards had a cx23415, so testing for that is too
1377 	   general. Instead test if the card has video output capability. */
1378 	if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) {
1379 		ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_INIT | IVTV_IRQ_DEC_VSYNC);
1380 		ivtv_set_osd_alpha(itv);
1381 		ivtv_s_std_dec(itv, itv->tuner_std);
1382 	} else {
1383 		ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_INIT);
1384 	}
1385 
1386 	/* Setup initial controls */
1387 	cx2341x_handler_setup(&itv->cxhdl);
1388 	return 0;
1389 }
1390 
1391 static void ivtv_remove(struct pci_dev *pdev)
1392 {
1393 	struct v4l2_device *v4l2_dev = pci_get_drvdata(pdev);
1394 	struct ivtv *itv = to_ivtv(v4l2_dev);
1395 	int i;
1396 
1397 	IVTV_DEBUG_INFO("Removing card\n");
1398 
1399 	flush_request_modules(itv);
1400 
1401 	if (test_bit(IVTV_F_I_INITED, &itv->i_flags)) {
1402 		/* Stop all captures */
1403 		IVTV_DEBUG_INFO("Stopping all streams\n");
1404 		if (atomic_read(&itv->capturing) > 0)
1405 			ivtv_stop_all_captures(itv);
1406 
1407 		/* Stop all decoding */
1408 		IVTV_DEBUG_INFO("Stopping decoding\n");
1409 
1410 		/* Turn off the TV-out */
1411 		if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT)
1412 			ivtv_call_hw(itv, IVTV_HW_SAA7127, video, s_stream, 0);
1413 		if (atomic_read(&itv->decoding) > 0) {
1414 			int type;
1415 
1416 			if (test_bit(IVTV_F_I_DEC_YUV, &itv->i_flags))
1417 				type = IVTV_DEC_STREAM_TYPE_YUV;
1418 			else
1419 				type = IVTV_DEC_STREAM_TYPE_MPG;
1420 			ivtv_stop_v4l2_decode_stream(&itv->streams[type],
1421 				V4L2_DEC_CMD_STOP_TO_BLACK | V4L2_DEC_CMD_STOP_IMMEDIATELY, 0);
1422 		}
1423 		ivtv_halt_firmware(itv);
1424 	}
1425 
1426 	/* Interrupts */
1427 	ivtv_set_irq_mask(itv, 0xffffffff);
1428 	del_timer_sync(&itv->dma_timer);
1429 
1430 	/* Kill irq worker */
1431 	kthread_flush_worker(&itv->irq_worker);
1432 	kthread_stop(itv->irq_worker_task);
1433 
1434 	ivtv_streams_cleanup(itv);
1435 	ivtv_udma_free(itv);
1436 
1437 	v4l2_ctrl_handler_free(&itv->cxhdl.hdl);
1438 
1439 	exit_ivtv_i2c(itv);
1440 
1441 	free_irq(itv->pdev->irq, (void *)itv);
1442 	ivtv_iounmap(itv);
1443 
1444 	release_mem_region(itv->base_addr, IVTV_ENCODER_SIZE);
1445 	release_mem_region(itv->base_addr + IVTV_REG_OFFSET, IVTV_REG_SIZE);
1446 	if (itv->has_cx23415)
1447 		release_mem_region(itv->base_addr + IVTV_DECODER_OFFSET, IVTV_DECODER_SIZE);
1448 
1449 	pci_disable_device(itv->pdev);
1450 	for (i = 0; i < IVTV_VBI_FRAMES; i++)
1451 		kfree(itv->vbi.sliced_mpeg_data[i]);
1452 
1453 	pr_info("Removed %s\n", itv->card_name);
1454 
1455 	v4l2_device_unregister(&itv->v4l2_dev);
1456 	kfree(itv);
1457 }
1458 
1459 /* define a pci_driver for card detection */
1460 static struct pci_driver ivtv_pci_driver = {
1461       .name =     "ivtv",
1462       .id_table = ivtv_pci_tbl,
1463       .probe =    ivtv_probe,
1464       .remove =   ivtv_remove,
1465 };
1466 
1467 static int __init module_start(void)
1468 {
1469 	pr_info("Start initialization, version %s\n", IVTV_VERSION);
1470 
1471 	/* Validate parameters */
1472 	if (ivtv_first_minor < 0 || ivtv_first_minor >= IVTV_MAX_CARDS) {
1473 		pr_err("Exiting, ivtv_first_minor must be between 0 and %d\n",
1474 		     IVTV_MAX_CARDS - 1);
1475 		return -1;
1476 	}
1477 
1478 	if (ivtv_debug < 0 || ivtv_debug > 2047) {
1479 		ivtv_debug = 0;
1480 		pr_info("Debug value must be >= 0 and <= 2047\n");
1481 	}
1482 
1483 	if (pci_register_driver(&ivtv_pci_driver)) {
1484 		pr_err("Error detecting PCI card\n");
1485 		return -ENODEV;
1486 	}
1487 	pr_info("End initialization\n");
1488 	return 0;
1489 }
1490 
1491 static void __exit module_cleanup(void)
1492 {
1493 	pci_unregister_driver(&ivtv_pci_driver);
1494 }
1495 
1496 /* Note: These symbols are exported because they are used by the ivtvfb
1497    framebuffer module and an infrared module for the IR-blaster. */
1498 EXPORT_SYMBOL(ivtv_set_irq_mask);
1499 EXPORT_SYMBOL(ivtv_api);
1500 EXPORT_SYMBOL(ivtv_vapi);
1501 EXPORT_SYMBOL(ivtv_vapi_result);
1502 EXPORT_SYMBOL(ivtv_clear_irq_mask);
1503 EXPORT_SYMBOL(ivtv_debug);
1504 #ifdef CONFIG_VIDEO_ADV_DEBUG
1505 EXPORT_SYMBOL(ivtv_fw_debug);
1506 #endif
1507 EXPORT_SYMBOL(ivtv_reset_ir_gpio);
1508 EXPORT_SYMBOL(ivtv_udma_setup);
1509 EXPORT_SYMBOL(ivtv_udma_unmap);
1510 EXPORT_SYMBOL(ivtv_udma_alloc);
1511 EXPORT_SYMBOL(ivtv_udma_prepare);
1512 EXPORT_SYMBOL(ivtv_init_on_first_open);
1513 EXPORT_SYMBOL(ivtv_firmware_check);
1514 
1515 module_init(module_start);
1516 module_exit(module_cleanup);
1517