1 /*
2    cx231xx-core.c - driver for Conexant Cx23100/101/102
3 				USB video capture devices
4 
5    Copyright (C) 2008 <srinivasa.deevi at conexant dot com>
6 				Based on em28xx driver
7 
8    This program is free software; you can redistribute it and/or modify
9    it under the terms of the GNU General Public License as published by
10    the Free Software Foundation; either version 2 of the License, or
11    (at your option) any later version.
12 
13    This program is distributed in the hope that it will be useful,
14    but WITHOUT ANY WARRANTY; without even the implied warranty of
15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16    GNU General Public License for more details.
17 
18    You should have received a copy of the GNU General Public License
19    along with this program; if not, write to the Free Software
20    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21  */
22 
23 #include "cx231xx.h"
24 #include <linux/init.h>
25 #include <linux/list.h>
26 #include <linux/module.h>
27 #include <linux/slab.h>
28 #include <linux/vmalloc.h>
29 #include <media/v4l2-common.h>
30 #include <media/tuner.h>
31 
32 #include "cx231xx-reg.h"
33 
34 /* #define ENABLE_DEBUG_ISOC_FRAMES */
35 
36 static unsigned int core_debug;
37 module_param(core_debug, int, 0644);
38 MODULE_PARM_DESC(core_debug, "enable debug messages [core]");
39 
40 #define cx231xx_coredbg(fmt, arg...) do {\
41 	if (core_debug) \
42 		printk(KERN_INFO "%s %s :"fmt, \
43 			 dev->name, __func__ , ##arg); } while (0)
44 
45 static unsigned int reg_debug;
46 module_param(reg_debug, int, 0644);
47 MODULE_PARM_DESC(reg_debug, "enable debug messages [URB reg]");
48 
49 static int alt = CX231XX_PINOUT;
50 module_param(alt, int, 0644);
51 MODULE_PARM_DESC(alt, "alternate setting to use for video endpoint");
52 
53 #define cx231xx_isocdbg(fmt, arg...) do {\
54 	if (core_debug) \
55 		printk(KERN_INFO "%s %s :"fmt, \
56 			 dev->name, __func__ , ##arg); } while (0)
57 
58 /*****************************************************************
59 *             Device control list functions					 *
60 ******************************************************************/
61 
62 LIST_HEAD(cx231xx_devlist);
63 static DEFINE_MUTEX(cx231xx_devlist_mutex);
64 
65 /*
66  * cx231xx_realease_resources()
67  * unregisters the v4l2,i2c and usb devices
68  * called when the device gets disconected or at module unload
69 */
70 void cx231xx_remove_from_devlist(struct cx231xx *dev)
71 {
72 	if (dev == NULL)
73 		return;
74 	if (dev->udev == NULL)
75 		return;
76 
77 	if (atomic_read(&dev->devlist_count) > 0) {
78 		mutex_lock(&cx231xx_devlist_mutex);
79 		list_del(&dev->devlist);
80 		atomic_dec(&dev->devlist_count);
81 		mutex_unlock(&cx231xx_devlist_mutex);
82 	}
83 };
84 
85 void cx231xx_add_into_devlist(struct cx231xx *dev)
86 {
87 	mutex_lock(&cx231xx_devlist_mutex);
88 	list_add_tail(&dev->devlist, &cx231xx_devlist);
89 	atomic_inc(&dev->devlist_count);
90 	mutex_unlock(&cx231xx_devlist_mutex);
91 };
92 
93 static LIST_HEAD(cx231xx_extension_devlist);
94 
95 int cx231xx_register_extension(struct cx231xx_ops *ops)
96 {
97 	struct cx231xx *dev = NULL;
98 
99 	mutex_lock(&cx231xx_devlist_mutex);
100 	list_add_tail(&ops->next, &cx231xx_extension_devlist);
101 	list_for_each_entry(dev, &cx231xx_devlist, devlist) {
102 		ops->init(dev);
103 		dev_info(dev->dev, "%s initialized\n", ops->name);
104 	}
105 	mutex_unlock(&cx231xx_devlist_mutex);
106 	return 0;
107 }
108 EXPORT_SYMBOL(cx231xx_register_extension);
109 
110 void cx231xx_unregister_extension(struct cx231xx_ops *ops)
111 {
112 	struct cx231xx *dev = NULL;
113 
114 	mutex_lock(&cx231xx_devlist_mutex);
115 	list_for_each_entry(dev, &cx231xx_devlist, devlist) {
116 		ops->fini(dev);
117 		dev_info(dev->dev, "%s removed\n", ops->name);
118 	}
119 
120 	list_del(&ops->next);
121 	mutex_unlock(&cx231xx_devlist_mutex);
122 }
123 EXPORT_SYMBOL(cx231xx_unregister_extension);
124 
125 void cx231xx_init_extension(struct cx231xx *dev)
126 {
127 	struct cx231xx_ops *ops = NULL;
128 
129 	mutex_lock(&cx231xx_devlist_mutex);
130 	if (!list_empty(&cx231xx_extension_devlist)) {
131 		list_for_each_entry(ops, &cx231xx_extension_devlist, next) {
132 			if (ops->init)
133 				ops->init(dev);
134 		}
135 	}
136 	mutex_unlock(&cx231xx_devlist_mutex);
137 }
138 
139 void cx231xx_close_extension(struct cx231xx *dev)
140 {
141 	struct cx231xx_ops *ops = NULL;
142 
143 	mutex_lock(&cx231xx_devlist_mutex);
144 	if (!list_empty(&cx231xx_extension_devlist)) {
145 		list_for_each_entry(ops, &cx231xx_extension_devlist, next) {
146 			if (ops->fini)
147 				ops->fini(dev);
148 		}
149 	}
150 	mutex_unlock(&cx231xx_devlist_mutex);
151 }
152 
153 /****************************************************************
154 *               U S B related functions                         *
155 *****************************************************************/
156 int cx231xx_send_usb_command(struct cx231xx_i2c *i2c_bus,
157 			     struct cx231xx_i2c_xfer_data *req_data)
158 {
159 	int status = 0;
160 	struct cx231xx *dev = i2c_bus->dev;
161 	struct VENDOR_REQUEST_IN ven_req;
162 
163 	u8 saddr_len = 0;
164 	u8 _i2c_period = 0;
165 	u8 _i2c_nostop = 0;
166 	u8 _i2c_reserve = 0;
167 
168 	if (dev->state & DEV_DISCONNECTED)
169 		return -ENODEV;
170 
171 	/* Get the I2C period, nostop and reserve parameters */
172 	_i2c_period = i2c_bus->i2c_period;
173 	_i2c_nostop = i2c_bus->i2c_nostop;
174 	_i2c_reserve = i2c_bus->i2c_reserve;
175 
176 	saddr_len = req_data->saddr_len;
177 
178 	/* Set wValue */
179 	ven_req.wValue = (req_data->dev_addr << 9 | _i2c_period << 4 |
180 			  saddr_len << 2 | _i2c_nostop << 1 | I2C_SYNC |
181 			  _i2c_reserve << 6);
182 
183 	/* set channel number */
184 	if (req_data->direction & I2C_M_RD) {
185 		/* channel number, for read,spec required channel_num +4 */
186 		ven_req.bRequest = i2c_bus->nr + 4;
187 	} else
188 		ven_req.bRequest = i2c_bus->nr;	/* channel number,  */
189 
190 	/* set index value */
191 	switch (saddr_len) {
192 	case 0:
193 		ven_req.wIndex = 0;	/* need check */
194 		break;
195 	case 1:
196 		ven_req.wIndex = (req_data->saddr_dat & 0xff);
197 		break;
198 	case 2:
199 		ven_req.wIndex = req_data->saddr_dat;
200 		break;
201 	}
202 
203 	/* set wLength value */
204 	ven_req.wLength = req_data->buf_size;
205 
206 	/* set bData value */
207 	ven_req.bData = 0;
208 
209 	/* set the direction */
210 	if (req_data->direction) {
211 		ven_req.direction = USB_DIR_IN;
212 		memset(req_data->p_buffer, 0x00, ven_req.wLength);
213 	} else
214 		ven_req.direction = USB_DIR_OUT;
215 
216 	/* set the buffer for read / write */
217 	ven_req.pBuff = req_data->p_buffer;
218 
219 
220 	/* call common vendor command request */
221 	status = cx231xx_send_vendor_cmd(dev, &ven_req);
222 	if (status < 0 && !dev->i2c_scan_running) {
223 		dev_err(dev->dev, "%s: failed with status -%d\n",
224 			__func__, status);
225 	}
226 
227 	return status;
228 }
229 EXPORT_SYMBOL_GPL(cx231xx_send_usb_command);
230 
231 /*
232  * Sends/Receives URB control messages, assuring to use a kalloced buffer
233  * for all operations (dev->urb_buf), to avoid using stacked buffers, as
234  * they aren't safe for usage with USB, due to DMA restrictions.
235  * Also implements the debug code for control URB's.
236  */
237 static int __usb_control_msg(struct cx231xx *dev, unsigned int pipe,
238 	__u8 request, __u8 requesttype, __u16 value, __u16 index,
239 	void *data, __u16 size, int timeout)
240 {
241 	int rc, i;
242 
243 	if (reg_debug) {
244 		printk(KERN_DEBUG "%s: (pipe 0x%08x): %s:  %02x %02x %02x %02x %02x %02x %02x %02x ",
245 				dev->name,
246 				pipe,
247 				(requesttype & USB_DIR_IN) ? "IN" : "OUT",
248 				requesttype,
249 				request,
250 				value & 0xff, value >> 8,
251 				index & 0xff, index >> 8,
252 				size & 0xff, size >> 8);
253 		if (!(requesttype & USB_DIR_IN)) {
254 			printk(KERN_CONT ">>>");
255 			for (i = 0; i < size; i++)
256 				printk(KERN_CONT " %02x",
257 				       ((unsigned char *)data)[i]);
258 		}
259 	}
260 
261 	/* Do the real call to usb_control_msg */
262 	mutex_lock(&dev->ctrl_urb_lock);
263 	if (!(requesttype & USB_DIR_IN) && size)
264 		memcpy(dev->urb_buf, data, size);
265 	rc = usb_control_msg(dev->udev, pipe, request, requesttype, value,
266 			     index, dev->urb_buf, size, timeout);
267 	if ((requesttype & USB_DIR_IN) && size)
268 		memcpy(data, dev->urb_buf, size);
269 	mutex_unlock(&dev->ctrl_urb_lock);
270 
271 	if (reg_debug) {
272 		if (unlikely(rc < 0)) {
273 			printk(KERN_CONT "FAILED!\n");
274 			return rc;
275 		}
276 
277 		if ((requesttype & USB_DIR_IN)) {
278 			printk(KERN_CONT "<<<");
279 			for (i = 0; i < size; i++)
280 				printk(KERN_CONT " %02x",
281 				       ((unsigned char *)data)[i]);
282 		}
283 		printk(KERN_CONT "\n");
284 	}
285 
286 	return rc;
287 }
288 
289 
290 /*
291  * cx231xx_read_ctrl_reg()
292  * reads data from the usb device specifying bRequest and wValue
293  */
294 int cx231xx_read_ctrl_reg(struct cx231xx *dev, u8 req, u16 reg,
295 			  char *buf, int len)
296 {
297 	u8 val = 0;
298 	int ret;
299 	int pipe = usb_rcvctrlpipe(dev->udev, 0);
300 
301 	if (dev->state & DEV_DISCONNECTED)
302 		return -ENODEV;
303 
304 	if (len > URB_MAX_CTRL_SIZE)
305 		return -EINVAL;
306 
307 	switch (len) {
308 	case 1:
309 		val = ENABLE_ONE_BYTE;
310 		break;
311 	case 2:
312 		val = ENABLE_TWE_BYTE;
313 		break;
314 	case 3:
315 		val = ENABLE_THREE_BYTE;
316 		break;
317 	case 4:
318 		val = ENABLE_FOUR_BYTE;
319 		break;
320 	default:
321 		val = 0xFF;	/* invalid option */
322 	}
323 
324 	if (val == 0xFF)
325 		return -EINVAL;
326 
327 	ret = __usb_control_msg(dev, pipe, req,
328 			      USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
329 			      val, reg, buf, len, HZ);
330 	return ret;
331 }
332 
333 int cx231xx_send_vendor_cmd(struct cx231xx *dev,
334 				struct VENDOR_REQUEST_IN *ven_req)
335 {
336 	int ret;
337 	int pipe = 0;
338 	int unsend_size = 0;
339 	u8 *pdata;
340 
341 	if (dev->state & DEV_DISCONNECTED)
342 		return -ENODEV;
343 
344 	if ((ven_req->wLength > URB_MAX_CTRL_SIZE))
345 		return -EINVAL;
346 
347 	if (ven_req->direction)
348 		pipe = usb_rcvctrlpipe(dev->udev, 0);
349 	else
350 		pipe = usb_sndctrlpipe(dev->udev, 0);
351 
352 	/*
353 	 * If the cx23102 read more than 4 bytes with i2c bus,
354 	 * need chop to 4 byte per request
355 	 */
356 	if ((ven_req->wLength > 4) && ((ven_req->bRequest == 0x4) ||
357 					(ven_req->bRequest == 0x5) ||
358 					(ven_req->bRequest == 0x6) ||
359 
360 					/* Internal Master 3 Bus can send
361 					 * and receive only 4 bytes per time
362 					 */
363 					(ven_req->bRequest == 0x2))) {
364 		unsend_size = 0;
365 		pdata = ven_req->pBuff;
366 
367 
368 		unsend_size = ven_req->wLength;
369 
370 		/* the first package */
371 		ven_req->wValue = ven_req->wValue & 0xFFFB;
372 		ven_req->wValue = (ven_req->wValue & 0xFFBD) | 0x2;
373 		ret = __usb_control_msg(dev, pipe, ven_req->bRequest,
374 			ven_req->direction | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
375 			ven_req->wValue, ven_req->wIndex, pdata,
376 			0x0004, HZ);
377 		unsend_size = unsend_size - 4;
378 
379 		/* the middle package */
380 		ven_req->wValue = (ven_req->wValue & 0xFFBD) | 0x42;
381 		while (unsend_size - 4 > 0) {
382 			pdata = pdata + 4;
383 			ret = __usb_control_msg(dev, pipe,
384 				ven_req->bRequest,
385 				ven_req->direction | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
386 				ven_req->wValue, ven_req->wIndex, pdata,
387 				0x0004, HZ);
388 			unsend_size = unsend_size - 4;
389 		}
390 
391 		/* the last package */
392 		ven_req->wValue = (ven_req->wValue & 0xFFBD) | 0x40;
393 		pdata = pdata + 4;
394 		ret = __usb_control_msg(dev, pipe, ven_req->bRequest,
395 			ven_req->direction | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
396 			ven_req->wValue, ven_req->wIndex, pdata,
397 			unsend_size, HZ);
398 	} else {
399 		ret = __usb_control_msg(dev, pipe, ven_req->bRequest,
400 				ven_req->direction | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
401 				ven_req->wValue, ven_req->wIndex,
402 				ven_req->pBuff, ven_req->wLength, HZ);
403 	}
404 
405 	return ret;
406 }
407 
408 /*
409  * cx231xx_write_ctrl_reg()
410  * sends data to the usb device, specifying bRequest
411  */
412 int cx231xx_write_ctrl_reg(struct cx231xx *dev, u8 req, u16 reg, char *buf,
413 			   int len)
414 {
415 	u8 val = 0;
416 	int ret;
417 	int pipe = usb_sndctrlpipe(dev->udev, 0);
418 
419 	if (dev->state & DEV_DISCONNECTED)
420 		return -ENODEV;
421 
422 	if ((len < 1) || (len > URB_MAX_CTRL_SIZE))
423 		return -EINVAL;
424 
425 	switch (len) {
426 	case 1:
427 		val = ENABLE_ONE_BYTE;
428 		break;
429 	case 2:
430 		val = ENABLE_TWE_BYTE;
431 		break;
432 	case 3:
433 		val = ENABLE_THREE_BYTE;
434 		break;
435 	case 4:
436 		val = ENABLE_FOUR_BYTE;
437 		break;
438 	default:
439 		val = 0xFF;	/* invalid option */
440 	}
441 
442 	if (val == 0xFF)
443 		return -EINVAL;
444 
445 	if (reg_debug) {
446 		int byte;
447 
448 		cx231xx_isocdbg("(pipe 0x%08x): OUT: %02x %02x %02x %02x %02x %02x %02x %02x >>>",
449 			pipe,
450 			USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
451 			req, 0, val, reg & 0xff,
452 			reg >> 8, len & 0xff, len >> 8);
453 
454 		for (byte = 0; byte < len; byte++)
455 			cx231xx_isocdbg(" %02x", (unsigned char)buf[byte]);
456 		cx231xx_isocdbg("\n");
457 	}
458 
459 	ret = __usb_control_msg(dev, pipe, req,
460 			      USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
461 			      val, reg, buf, len, HZ);
462 
463 	return ret;
464 }
465 
466 /****************************************************************
467 *           USB Alternate Setting functions                     *
468 *****************************************************************/
469 
470 int cx231xx_set_video_alternate(struct cx231xx *dev)
471 {
472 	int errCode, prev_alt = dev->video_mode.alt;
473 	unsigned int min_pkt_size = dev->width * 2 + 4;
474 	u32 usb_interface_index = 0;
475 
476 	/* When image size is bigger than a certain value,
477 	   the frame size should be increased, otherwise, only
478 	   green screen will be received.
479 	 */
480 	if (dev->width * 2 * dev->height > 720 * 240 * 2)
481 		min_pkt_size *= 2;
482 
483 	if (dev->width > 360) {
484 		/* resolutions: 720,704,640 */
485 		dev->video_mode.alt = 3;
486 	} else if (dev->width > 180) {
487 		/* resolutions: 360,352,320,240 */
488 		dev->video_mode.alt = 2;
489 	} else if (dev->width > 0) {
490 		/* resolutions: 180,176,160,128,88 */
491 		dev->video_mode.alt = 1;
492 	} else {
493 		/* Change to alt0 BULK to release USB bandwidth */
494 		dev->video_mode.alt = 0;
495 	}
496 
497 	if (dev->USE_ISO == 0)
498 		dev->video_mode.alt = 0;
499 
500 	cx231xx_coredbg("dev->video_mode.alt= %d\n", dev->video_mode.alt);
501 
502 	/* Get the correct video interface Index */
503 	usb_interface_index =
504 	    dev->current_pcb_config.hs_config_info[0].interface_info.
505 	    video_index + 1;
506 
507 	if (dev->video_mode.alt != prev_alt) {
508 		cx231xx_coredbg("minimum isoc packet size: %u (alt=%d)\n",
509 				min_pkt_size, dev->video_mode.alt);
510 
511 		if (dev->video_mode.alt_max_pkt_size != NULL)
512 			dev->video_mode.max_pkt_size =
513 			dev->video_mode.alt_max_pkt_size[dev->video_mode.alt];
514 		cx231xx_coredbg("setting alternate %d with wMaxPacketSize=%u\n",
515 				dev->video_mode.alt,
516 				dev->video_mode.max_pkt_size);
517 		errCode =
518 		    usb_set_interface(dev->udev, usb_interface_index,
519 				      dev->video_mode.alt);
520 		if (errCode < 0) {
521 			dev_err(dev->dev,
522 				"cannot change alt number to %d (error=%i)\n",
523 				dev->video_mode.alt, errCode);
524 			return errCode;
525 		}
526 	}
527 	return 0;
528 }
529 
530 int cx231xx_set_alt_setting(struct cx231xx *dev, u8 index, u8 alt)
531 {
532 	int status = 0;
533 	u32 usb_interface_index = 0;
534 	u32 max_pkt_size = 0;
535 
536 	switch (index) {
537 	case INDEX_TS1:
538 		usb_interface_index =
539 		    dev->current_pcb_config.hs_config_info[0].interface_info.
540 		    ts1_index + 1;
541 		dev->ts1_mode.alt = alt;
542 		if (dev->ts1_mode.alt_max_pkt_size != NULL)
543 			max_pkt_size = dev->ts1_mode.max_pkt_size =
544 			    dev->ts1_mode.alt_max_pkt_size[dev->ts1_mode.alt];
545 		break;
546 	case INDEX_TS2:
547 		usb_interface_index =
548 		    dev->current_pcb_config.hs_config_info[0].interface_info.
549 		    ts2_index + 1;
550 		break;
551 	case INDEX_AUDIO:
552 		usb_interface_index =
553 		    dev->current_pcb_config.hs_config_info[0].interface_info.
554 		    audio_index + 1;
555 		dev->adev.alt = alt;
556 		if (dev->adev.alt_max_pkt_size != NULL)
557 			max_pkt_size = dev->adev.max_pkt_size =
558 			    dev->adev.alt_max_pkt_size[dev->adev.alt];
559 		break;
560 	case INDEX_VIDEO:
561 		usb_interface_index =
562 		    dev->current_pcb_config.hs_config_info[0].interface_info.
563 		    video_index + 1;
564 		dev->video_mode.alt = alt;
565 		if (dev->video_mode.alt_max_pkt_size != NULL)
566 			max_pkt_size = dev->video_mode.max_pkt_size =
567 			    dev->video_mode.alt_max_pkt_size[dev->video_mode.
568 							     alt];
569 		break;
570 	case INDEX_VANC:
571 		if (dev->board.no_alt_vanc)
572 			return 0;
573 		usb_interface_index =
574 		    dev->current_pcb_config.hs_config_info[0].interface_info.
575 		    vanc_index + 1;
576 		dev->vbi_mode.alt = alt;
577 		if (dev->vbi_mode.alt_max_pkt_size != NULL)
578 			max_pkt_size = dev->vbi_mode.max_pkt_size =
579 			    dev->vbi_mode.alt_max_pkt_size[dev->vbi_mode.alt];
580 		break;
581 	case INDEX_HANC:
582 		usb_interface_index =
583 		    dev->current_pcb_config.hs_config_info[0].interface_info.
584 		    hanc_index + 1;
585 		dev->sliced_cc_mode.alt = alt;
586 		if (dev->sliced_cc_mode.alt_max_pkt_size != NULL)
587 			max_pkt_size = dev->sliced_cc_mode.max_pkt_size =
588 			    dev->sliced_cc_mode.alt_max_pkt_size[dev->
589 								 sliced_cc_mode.
590 								 alt];
591 		break;
592 	default:
593 		break;
594 	}
595 
596 	if (alt > 0 && max_pkt_size == 0) {
597 		dev_err(dev->dev,
598 			"can't change interface %d alt no. to %d: Max. Pkt size = 0\n",
599 			usb_interface_index, alt);
600 		/*To workaround error number=-71 on EP0 for videograbber,
601 		 need add following codes.*/
602 		if (dev->board.no_alt_vanc)
603 			return -1;
604 	}
605 
606 	cx231xx_coredbg("setting alternate %d with wMaxPacketSize=%u,Interface = %d\n",
607 			alt, max_pkt_size,
608 			usb_interface_index);
609 
610 	if (usb_interface_index > 0) {
611 		status = usb_set_interface(dev->udev, usb_interface_index, alt);
612 		if (status < 0) {
613 			dev_err(dev->dev,
614 				"can't change interface %d alt no. to %d (err=%i)\n",
615 				usb_interface_index, alt, status);
616 			return status;
617 		}
618 	}
619 
620 	return status;
621 }
622 EXPORT_SYMBOL_GPL(cx231xx_set_alt_setting);
623 
624 int cx231xx_gpio_set(struct cx231xx *dev, struct cx231xx_reg_seq *gpio)
625 {
626 	int rc = 0;
627 
628 	if (!gpio)
629 		return rc;
630 
631 	/* Send GPIO reset sequences specified at board entry */
632 	while (gpio->sleep >= 0) {
633 		rc = cx231xx_set_gpio_value(dev, gpio->bit, gpio->val);
634 		if (rc < 0)
635 			return rc;
636 
637 		if (gpio->sleep > 0)
638 			msleep(gpio->sleep);
639 
640 		gpio++;
641 	}
642 	return rc;
643 }
644 
645 int cx231xx_demod_reset(struct cx231xx *dev)
646 {
647 
648 	u8 status = 0;
649 	u8 value[4] = { 0, 0, 0, 0 };
650 
651 	status = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, PWR_CTL_EN,
652 				 value, 4);
653 
654 	cx231xx_coredbg("reg0x%x=0x%x 0x%x 0x%x 0x%x\n", PWR_CTL_EN,
655 			value[0], value[1], value[2], value[3]);
656 
657 	cx231xx_coredbg("Enter cx231xx_demod_reset()\n");
658 
659 	value[1] = (u8) 0x3;
660 	status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
661 					PWR_CTL_EN, value, 4);
662 	msleep(10);
663 
664 	value[1] = (u8) 0x0;
665 	status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
666 					PWR_CTL_EN, value, 4);
667 	msleep(10);
668 
669 	value[1] = (u8) 0x3;
670 	status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
671 					PWR_CTL_EN, value, 4);
672 	msleep(10);
673 
674 	status = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, PWR_CTL_EN,
675 				 value, 4);
676 
677 	cx231xx_coredbg("reg0x%x=0x%x 0x%x 0x%x 0x%x\n", PWR_CTL_EN,
678 			value[0], value[1], value[2], value[3]);
679 
680 	return status;
681 }
682 EXPORT_SYMBOL_GPL(cx231xx_demod_reset);
683 int is_fw_load(struct cx231xx *dev)
684 {
685 	return cx231xx_check_fw(dev);
686 }
687 EXPORT_SYMBOL_GPL(is_fw_load);
688 
689 int cx231xx_set_mode(struct cx231xx *dev, enum cx231xx_mode set_mode)
690 {
691 	int errCode = 0;
692 
693 	if (dev->mode == set_mode)
694 		return 0;
695 
696 	if (set_mode == CX231XX_SUSPEND) {
697 		/* Set the chip in power saving mode */
698 		dev->mode = set_mode;
699 	}
700 
701 	/* Resource is locked */
702 	if (dev->mode != CX231XX_SUSPEND)
703 		return -EINVAL;
704 
705 	dev->mode = set_mode;
706 
707 	if (dev->mode == CX231XX_DIGITAL_MODE)/* Set Digital power mode */ {
708 	/* set AGC mode to Digital */
709 		switch (dev->model) {
710 		case CX231XX_BOARD_CNXT_CARRAERA:
711 		case CX231XX_BOARD_CNXT_RDE_250:
712 		case CX231XX_BOARD_CNXT_SHELBY:
713 		case CX231XX_BOARD_CNXT_RDU_250:
714 		errCode = cx231xx_set_agc_analog_digital_mux_select(dev, 0);
715 			break;
716 		case CX231XX_BOARD_CNXT_RDE_253S:
717 		case CX231XX_BOARD_CNXT_RDU_253S:
718 		case CX231XX_BOARD_PV_PLAYTV_USB_HYBRID:
719 			errCode = cx231xx_set_agc_analog_digital_mux_select(dev, 1);
720 			break;
721 		case CX231XX_BOARD_HAUPPAUGE_EXETER:
722 		case CX231XX_BOARD_HAUPPAUGE_930C_HD_1113xx:
723 			errCode = cx231xx_set_power_mode(dev,
724 						POLARIS_AVMODE_DIGITAL);
725 			break;
726 		default:
727 			break;
728 		}
729 	} else/* Set Analog Power mode */ {
730 	/* set AGC mode to Analog */
731 		switch (dev->model) {
732 		case CX231XX_BOARD_CNXT_CARRAERA:
733 		case CX231XX_BOARD_CNXT_RDE_250:
734 		case CX231XX_BOARD_CNXT_SHELBY:
735 		case CX231XX_BOARD_CNXT_RDU_250:
736 		errCode = cx231xx_set_agc_analog_digital_mux_select(dev, 1);
737 			break;
738 		case CX231XX_BOARD_CNXT_RDE_253S:
739 		case CX231XX_BOARD_CNXT_RDU_253S:
740 		case CX231XX_BOARD_HAUPPAUGE_EXETER:
741 		case CX231XX_BOARD_HAUPPAUGE_930C_HD_1113xx:
742 		case CX231XX_BOARD_PV_PLAYTV_USB_HYBRID:
743 		case CX231XX_BOARD_HAUPPAUGE_USB2_FM_PAL:
744 		case CX231XX_BOARD_HAUPPAUGE_USB2_FM_NTSC:
745 			errCode = cx231xx_set_agc_analog_digital_mux_select(dev, 0);
746 			break;
747 		default:
748 			break;
749 		}
750 	}
751 
752 	if (errCode < 0) {
753 		dev_err(dev->dev, "Failed to set devmode to %s: error: %i",
754 			dev->mode == CX231XX_DIGITAL_MODE ? "digital" : "analog",
755 			errCode);
756 		return errCode;
757 	}
758 
759 	return 0;
760 }
761 EXPORT_SYMBOL_GPL(cx231xx_set_mode);
762 
763 int cx231xx_ep5_bulkout(struct cx231xx *dev, u8 *firmware, u16 size)
764 {
765 	int errCode = 0;
766 	int actlen = -1;
767 	int ret = -ENOMEM;
768 	u32 *buffer;
769 
770 	buffer = kzalloc(4096, GFP_KERNEL);
771 	if (buffer == NULL)
772 		return -ENOMEM;
773 	memcpy(&buffer[0], firmware, 4096);
774 
775 	ret = usb_bulk_msg(dev->udev, usb_sndbulkpipe(dev->udev, 5),
776 			buffer, 4096, &actlen, 2000);
777 
778 	if (ret)
779 		dev_err(dev->dev,
780 			"bulk message failed: %d (%d/%d)", ret,
781 			size, actlen);
782 	else {
783 		errCode = actlen != size ? -1 : 0;
784 	}
785 	kfree(buffer);
786 	return errCode;
787 }
788 
789 /*****************************************************************
790 *                URB Streaming functions                         *
791 ******************************************************************/
792 
793 /*
794  * IRQ callback, called by URB callback
795  */
796 static void cx231xx_isoc_irq_callback(struct urb *urb)
797 {
798 	struct cx231xx_dmaqueue *dma_q = urb->context;
799 	struct cx231xx_video_mode *vmode =
800 	    container_of(dma_q, struct cx231xx_video_mode, vidq);
801 	struct cx231xx *dev = container_of(vmode, struct cx231xx, video_mode);
802 	int i;
803 
804 	switch (urb->status) {
805 	case 0:		/* success */
806 	case -ETIMEDOUT:	/* NAK */
807 		break;
808 	case -ECONNRESET:	/* kill */
809 	case -ENOENT:
810 	case -ESHUTDOWN:
811 		return;
812 	default:		/* error */
813 		cx231xx_isocdbg("urb completion error %d.\n", urb->status);
814 		break;
815 	}
816 
817 	/* Copy data from URB */
818 	spin_lock(&dev->video_mode.slock);
819 	dev->video_mode.isoc_ctl.isoc_copy(dev, urb);
820 	spin_unlock(&dev->video_mode.slock);
821 
822 	/* Reset urb buffers */
823 	for (i = 0; i < urb->number_of_packets; i++) {
824 		urb->iso_frame_desc[i].status = 0;
825 		urb->iso_frame_desc[i].actual_length = 0;
826 	}
827 
828 	urb->status = usb_submit_urb(urb, GFP_ATOMIC);
829 	if (urb->status) {
830 		cx231xx_isocdbg("urb resubmit failed (error=%i)\n",
831 				urb->status);
832 	}
833 }
834 /*****************************************************************
835 *                URB Streaming functions                         *
836 ******************************************************************/
837 
838 /*
839  * IRQ callback, called by URB callback
840  */
841 static void cx231xx_bulk_irq_callback(struct urb *urb)
842 {
843 	struct cx231xx_dmaqueue *dma_q = urb->context;
844 	struct cx231xx_video_mode *vmode =
845 	    container_of(dma_q, struct cx231xx_video_mode, vidq);
846 	struct cx231xx *dev = container_of(vmode, struct cx231xx, video_mode);
847 
848 	switch (urb->status) {
849 	case 0:		/* success */
850 	case -ETIMEDOUT:	/* NAK */
851 		break;
852 	case -ECONNRESET:	/* kill */
853 	case -ENOENT:
854 	case -ESHUTDOWN:
855 		return;
856 	case -EPIPE:		/* stall */
857 		cx231xx_isocdbg("urb completion error - device is stalled.\n");
858 		return;
859 	default:		/* error */
860 		cx231xx_isocdbg("urb completion error %d.\n", urb->status);
861 		break;
862 	}
863 
864 	/* Copy data from URB */
865 	spin_lock(&dev->video_mode.slock);
866 	dev->video_mode.bulk_ctl.bulk_copy(dev, urb);
867 	spin_unlock(&dev->video_mode.slock);
868 
869 	/* Reset urb buffers */
870 	urb->status = usb_submit_urb(urb, GFP_ATOMIC);
871 	if (urb->status) {
872 		cx231xx_isocdbg("urb resubmit failed (error=%i)\n",
873 				urb->status);
874 	}
875 }
876 /*
877  * Stop and Deallocate URBs
878  */
879 void cx231xx_uninit_isoc(struct cx231xx *dev)
880 {
881 	struct cx231xx_dmaqueue *dma_q = &dev->video_mode.vidq;
882 	struct urb *urb;
883 	int i;
884 	bool broken_pipe = false;
885 
886 	cx231xx_isocdbg("cx231xx: called cx231xx_uninit_isoc\n");
887 
888 	dev->video_mode.isoc_ctl.nfields = -1;
889 	for (i = 0; i < dev->video_mode.isoc_ctl.num_bufs; i++) {
890 		urb = dev->video_mode.isoc_ctl.urb[i];
891 		if (urb) {
892 			if (!irqs_disabled())
893 				usb_kill_urb(urb);
894 			else
895 				usb_unlink_urb(urb);
896 
897 			if (dev->video_mode.isoc_ctl.transfer_buffer[i]) {
898 				usb_free_coherent(dev->udev,
899 						  urb->transfer_buffer_length,
900 						  dev->video_mode.isoc_ctl.
901 						  transfer_buffer[i],
902 						  urb->transfer_dma);
903 			}
904 			if (urb->status == -EPIPE) {
905 				broken_pipe = true;
906 			}
907 			usb_free_urb(urb);
908 			dev->video_mode.isoc_ctl.urb[i] = NULL;
909 		}
910 		dev->video_mode.isoc_ctl.transfer_buffer[i] = NULL;
911 	}
912 
913 	if (broken_pipe) {
914 		cx231xx_isocdbg("Reset endpoint to recover broken pipe.");
915 		usb_reset_endpoint(dev->udev, dev->video_mode.end_point_addr);
916 	}
917 	kfree(dev->video_mode.isoc_ctl.urb);
918 	kfree(dev->video_mode.isoc_ctl.transfer_buffer);
919 	kfree(dma_q->p_left_data);
920 
921 	dev->video_mode.isoc_ctl.urb = NULL;
922 	dev->video_mode.isoc_ctl.transfer_buffer = NULL;
923 	dev->video_mode.isoc_ctl.num_bufs = 0;
924 	dma_q->p_left_data = NULL;
925 
926 	if (dev->mode_tv == 0)
927 		cx231xx_capture_start(dev, 0, Raw_Video);
928 	else
929 		cx231xx_capture_start(dev, 0, TS1_serial_mode);
930 
931 
932 }
933 EXPORT_SYMBOL_GPL(cx231xx_uninit_isoc);
934 
935 /*
936  * Stop and Deallocate URBs
937  */
938 void cx231xx_uninit_bulk(struct cx231xx *dev)
939 {
940 	struct cx231xx_dmaqueue *dma_q = &dev->video_mode.vidq;
941 	struct urb *urb;
942 	int i;
943 	bool broken_pipe = false;
944 
945 	cx231xx_isocdbg("cx231xx: called cx231xx_uninit_bulk\n");
946 
947 	dev->video_mode.bulk_ctl.nfields = -1;
948 	for (i = 0; i < dev->video_mode.bulk_ctl.num_bufs; i++) {
949 		urb = dev->video_mode.bulk_ctl.urb[i];
950 		if (urb) {
951 			if (!irqs_disabled())
952 				usb_kill_urb(urb);
953 			else
954 				usb_unlink_urb(urb);
955 
956 			if (dev->video_mode.bulk_ctl.transfer_buffer[i]) {
957 				usb_free_coherent(dev->udev,
958 						urb->transfer_buffer_length,
959 						dev->video_mode.bulk_ctl.
960 						transfer_buffer[i],
961 						urb->transfer_dma);
962 			}
963 			if (urb->status == -EPIPE) {
964 				broken_pipe = true;
965 			}
966 			usb_free_urb(urb);
967 			dev->video_mode.bulk_ctl.urb[i] = NULL;
968 		}
969 		dev->video_mode.bulk_ctl.transfer_buffer[i] = NULL;
970 	}
971 
972 	if (broken_pipe) {
973 		cx231xx_isocdbg("Reset endpoint to recover broken pipe.");
974 		usb_reset_endpoint(dev->udev, dev->video_mode.end_point_addr);
975 	}
976 	kfree(dev->video_mode.bulk_ctl.urb);
977 	kfree(dev->video_mode.bulk_ctl.transfer_buffer);
978 	kfree(dma_q->p_left_data);
979 
980 	dev->video_mode.bulk_ctl.urb = NULL;
981 	dev->video_mode.bulk_ctl.transfer_buffer = NULL;
982 	dev->video_mode.bulk_ctl.num_bufs = 0;
983 	dma_q->p_left_data = NULL;
984 
985 	if (dev->mode_tv == 0)
986 		cx231xx_capture_start(dev, 0, Raw_Video);
987 	else
988 		cx231xx_capture_start(dev, 0, TS1_serial_mode);
989 
990 
991 }
992 EXPORT_SYMBOL_GPL(cx231xx_uninit_bulk);
993 
994 /*
995  * Allocate URBs and start IRQ
996  */
997 int cx231xx_init_isoc(struct cx231xx *dev, int max_packets,
998 		      int num_bufs, int max_pkt_size,
999 		      int (*isoc_copy) (struct cx231xx *dev, struct urb *urb))
1000 {
1001 	struct cx231xx_dmaqueue *dma_q = &dev->video_mode.vidq;
1002 	int i;
1003 	int sb_size, pipe;
1004 	struct urb *urb;
1005 	int j, k;
1006 	int rc;
1007 
1008 	/* De-allocates all pending stuff */
1009 	cx231xx_uninit_isoc(dev);
1010 
1011 	dma_q->p_left_data = kzalloc(4096, GFP_KERNEL);
1012 	if (dma_q->p_left_data == NULL)
1013 		return -ENOMEM;
1014 
1015 	dev->video_mode.isoc_ctl.isoc_copy = isoc_copy;
1016 	dev->video_mode.isoc_ctl.num_bufs = num_bufs;
1017 	dma_q->pos = 0;
1018 	dma_q->is_partial_line = 0;
1019 	dma_q->last_sav = 0;
1020 	dma_q->current_field = -1;
1021 	dma_q->field1_done = 0;
1022 	dma_q->lines_per_field = dev->height / 2;
1023 	dma_q->bytes_left_in_line = dev->width << 1;
1024 	dma_q->lines_completed = 0;
1025 	dma_q->mpeg_buffer_done = 0;
1026 	dma_q->left_data_count = 0;
1027 	dma_q->mpeg_buffer_completed = 0;
1028 	dma_q->add_ps_package_head = CX231XX_NEED_ADD_PS_PACKAGE_HEAD;
1029 	dma_q->ps_head[0] = 0x00;
1030 	dma_q->ps_head[1] = 0x00;
1031 	dma_q->ps_head[2] = 0x01;
1032 	dma_q->ps_head[3] = 0xBA;
1033 	for (i = 0; i < 8; i++)
1034 		dma_q->partial_buf[i] = 0;
1035 
1036 	dev->video_mode.isoc_ctl.urb =
1037 	    kzalloc(sizeof(void *) * num_bufs, GFP_KERNEL);
1038 	if (!dev->video_mode.isoc_ctl.urb) {
1039 		dev_err(dev->dev,
1040 			"cannot alloc memory for usb buffers\n");
1041 		return -ENOMEM;
1042 	}
1043 
1044 	dev->video_mode.isoc_ctl.transfer_buffer =
1045 	    kzalloc(sizeof(void *) * num_bufs, GFP_KERNEL);
1046 	if (!dev->video_mode.isoc_ctl.transfer_buffer) {
1047 		dev_err(dev->dev,
1048 			"cannot allocate memory for usbtransfer\n");
1049 		kfree(dev->video_mode.isoc_ctl.urb);
1050 		return -ENOMEM;
1051 	}
1052 
1053 	dev->video_mode.isoc_ctl.max_pkt_size = max_pkt_size;
1054 	dev->video_mode.isoc_ctl.buf = NULL;
1055 
1056 	sb_size = max_packets * dev->video_mode.isoc_ctl.max_pkt_size;
1057 
1058 	if (dev->mode_tv == 1)
1059 		dev->video_mode.end_point_addr = 0x81;
1060 	else
1061 		dev->video_mode.end_point_addr = 0x84;
1062 
1063 
1064 	/* allocate urbs and transfer buffers */
1065 	for (i = 0; i < dev->video_mode.isoc_ctl.num_bufs; i++) {
1066 		urb = usb_alloc_urb(max_packets, GFP_KERNEL);
1067 		if (!urb) {
1068 			cx231xx_uninit_isoc(dev);
1069 			return -ENOMEM;
1070 		}
1071 		dev->video_mode.isoc_ctl.urb[i] = urb;
1072 
1073 		dev->video_mode.isoc_ctl.transfer_buffer[i] =
1074 		    usb_alloc_coherent(dev->udev, sb_size, GFP_KERNEL,
1075 				       &urb->transfer_dma);
1076 		if (!dev->video_mode.isoc_ctl.transfer_buffer[i]) {
1077 			dev_err(dev->dev,
1078 				"unable to allocate %i bytes for transfer buffer %i%s\n",
1079 				sb_size, i,
1080 				in_interrupt() ? " while in int" : "");
1081 			cx231xx_uninit_isoc(dev);
1082 			return -ENOMEM;
1083 		}
1084 		memset(dev->video_mode.isoc_ctl.transfer_buffer[i], 0, sb_size);
1085 
1086 		pipe =
1087 		    usb_rcvisocpipe(dev->udev, dev->video_mode.end_point_addr);
1088 
1089 		usb_fill_int_urb(urb, dev->udev, pipe,
1090 				 dev->video_mode.isoc_ctl.transfer_buffer[i],
1091 				 sb_size, cx231xx_isoc_irq_callback, dma_q, 1);
1092 
1093 		urb->number_of_packets = max_packets;
1094 		urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
1095 
1096 		k = 0;
1097 		for (j = 0; j < max_packets; j++) {
1098 			urb->iso_frame_desc[j].offset = k;
1099 			urb->iso_frame_desc[j].length =
1100 			    dev->video_mode.isoc_ctl.max_pkt_size;
1101 			k += dev->video_mode.isoc_ctl.max_pkt_size;
1102 		}
1103 	}
1104 
1105 	init_waitqueue_head(&dma_q->wq);
1106 
1107 	/* submit urbs and enables IRQ */
1108 	for (i = 0; i < dev->video_mode.isoc_ctl.num_bufs; i++) {
1109 		rc = usb_submit_urb(dev->video_mode.isoc_ctl.urb[i],
1110 				    GFP_ATOMIC);
1111 		if (rc) {
1112 			dev_err(dev->dev,
1113 				"submit of urb %i failed (error=%i)\n", i,
1114 				rc);
1115 			cx231xx_uninit_isoc(dev);
1116 			return rc;
1117 		}
1118 	}
1119 
1120 	if (dev->mode_tv == 0)
1121 		cx231xx_capture_start(dev, 1, Raw_Video);
1122 	else
1123 		cx231xx_capture_start(dev, 1, TS1_serial_mode);
1124 
1125 	return 0;
1126 }
1127 EXPORT_SYMBOL_GPL(cx231xx_init_isoc);
1128 
1129 /*
1130  * Allocate URBs and start IRQ
1131  */
1132 int cx231xx_init_bulk(struct cx231xx *dev, int max_packets,
1133 		      int num_bufs, int max_pkt_size,
1134 		      int (*bulk_copy) (struct cx231xx *dev, struct urb *urb))
1135 {
1136 	struct cx231xx_dmaqueue *dma_q = &dev->video_mode.vidq;
1137 	int i;
1138 	int sb_size, pipe;
1139 	struct urb *urb;
1140 	int rc;
1141 
1142 	dev->video_input = dev->video_input > 2 ? 2 : dev->video_input;
1143 
1144 	cx231xx_coredbg("Setting Video mux to %d\n", dev->video_input);
1145 
1146 	video_mux(dev, dev->video_input);
1147 
1148 	/* De-allocates all pending stuff */
1149 	cx231xx_uninit_bulk(dev);
1150 
1151 	dev->video_mode.bulk_ctl.bulk_copy = bulk_copy;
1152 	dev->video_mode.bulk_ctl.num_bufs = num_bufs;
1153 	dma_q->pos = 0;
1154 	dma_q->is_partial_line = 0;
1155 	dma_q->last_sav = 0;
1156 	dma_q->current_field = -1;
1157 	dma_q->field1_done = 0;
1158 	dma_q->lines_per_field = dev->height / 2;
1159 	dma_q->bytes_left_in_line = dev->width << 1;
1160 	dma_q->lines_completed = 0;
1161 	dma_q->mpeg_buffer_done = 0;
1162 	dma_q->left_data_count = 0;
1163 	dma_q->mpeg_buffer_completed = 0;
1164 	dma_q->ps_head[0] = 0x00;
1165 	dma_q->ps_head[1] = 0x00;
1166 	dma_q->ps_head[2] = 0x01;
1167 	dma_q->ps_head[3] = 0xBA;
1168 	for (i = 0; i < 8; i++)
1169 		dma_q->partial_buf[i] = 0;
1170 
1171 	dev->video_mode.bulk_ctl.urb =
1172 	    kzalloc(sizeof(void *) * num_bufs, GFP_KERNEL);
1173 	if (!dev->video_mode.bulk_ctl.urb) {
1174 		dev_err(dev->dev,
1175 			"cannot alloc memory for usb buffers\n");
1176 		return -ENOMEM;
1177 	}
1178 
1179 	dev->video_mode.bulk_ctl.transfer_buffer =
1180 	    kzalloc(sizeof(void *) * num_bufs, GFP_KERNEL);
1181 	if (!dev->video_mode.bulk_ctl.transfer_buffer) {
1182 		dev_err(dev->dev,
1183 			"cannot allocate memory for usbtransfer\n");
1184 		kfree(dev->video_mode.bulk_ctl.urb);
1185 		return -ENOMEM;
1186 	}
1187 
1188 	dev->video_mode.bulk_ctl.max_pkt_size = max_pkt_size;
1189 	dev->video_mode.bulk_ctl.buf = NULL;
1190 
1191 	sb_size = max_packets * dev->video_mode.bulk_ctl.max_pkt_size;
1192 
1193 	if (dev->mode_tv == 1)
1194 		dev->video_mode.end_point_addr = 0x81;
1195 	else
1196 		dev->video_mode.end_point_addr = 0x84;
1197 
1198 
1199 	/* allocate urbs and transfer buffers */
1200 	for (i = 0; i < dev->video_mode.bulk_ctl.num_bufs; i++) {
1201 		urb = usb_alloc_urb(0, GFP_KERNEL);
1202 		if (!urb) {
1203 			cx231xx_uninit_bulk(dev);
1204 			return -ENOMEM;
1205 		}
1206 		dev->video_mode.bulk_ctl.urb[i] = urb;
1207 		urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
1208 
1209 		dev->video_mode.bulk_ctl.transfer_buffer[i] =
1210 		    usb_alloc_coherent(dev->udev, sb_size, GFP_KERNEL,
1211 				     &urb->transfer_dma);
1212 		if (!dev->video_mode.bulk_ctl.transfer_buffer[i]) {
1213 			dev_err(dev->dev,
1214 				"unable to allocate %i bytes for transfer buffer %i%s\n",
1215 				sb_size, i,
1216 				in_interrupt() ? " while in int" : "");
1217 			cx231xx_uninit_bulk(dev);
1218 			return -ENOMEM;
1219 		}
1220 		memset(dev->video_mode.bulk_ctl.transfer_buffer[i], 0, sb_size);
1221 
1222 		pipe = usb_rcvbulkpipe(dev->udev,
1223 				 dev->video_mode.end_point_addr);
1224 		usb_fill_bulk_urb(urb, dev->udev, pipe,
1225 				  dev->video_mode.bulk_ctl.transfer_buffer[i],
1226 				  sb_size, cx231xx_bulk_irq_callback, dma_q);
1227 	}
1228 
1229 	/* clear halt */
1230 	rc = usb_clear_halt(dev->udev, dev->video_mode.bulk_ctl.urb[0]->pipe);
1231 	if (rc < 0) {
1232 		dev_err(dev->dev,
1233 			"failed to clear USB bulk endpoint stall/halt condition (error=%i)\n",
1234 			rc);
1235 		cx231xx_uninit_bulk(dev);
1236 		return rc;
1237 	}
1238 
1239 	init_waitqueue_head(&dma_q->wq);
1240 
1241 	/* submit urbs and enables IRQ */
1242 	for (i = 0; i < dev->video_mode.bulk_ctl.num_bufs; i++) {
1243 		rc = usb_submit_urb(dev->video_mode.bulk_ctl.urb[i],
1244 				    GFP_ATOMIC);
1245 		if (rc) {
1246 			dev_err(dev->dev,
1247 				"submit of urb %i failed (error=%i)\n", i, rc);
1248 			cx231xx_uninit_bulk(dev);
1249 			return rc;
1250 		}
1251 	}
1252 
1253 	if (dev->mode_tv == 0)
1254 		cx231xx_capture_start(dev, 1, Raw_Video);
1255 	else
1256 		cx231xx_capture_start(dev, 1, TS1_serial_mode);
1257 
1258 	return 0;
1259 }
1260 EXPORT_SYMBOL_GPL(cx231xx_init_bulk);
1261 void cx231xx_stop_TS1(struct cx231xx *dev)
1262 {
1263 	u8 val[4] = { 0, 0, 0, 0 };
1264 
1265 	val[0] = 0x00;
1266 	val[1] = 0x03;
1267 	val[2] = 0x00;
1268 	val[3] = 0x00;
1269 	cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
1270 			TS_MODE_REG, val, 4);
1271 
1272 	val[0] = 0x00;
1273 	val[1] = 0x70;
1274 	val[2] = 0x04;
1275 	val[3] = 0x00;
1276 	cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
1277 			TS1_CFG_REG, val, 4);
1278 }
1279 /* EXPORT_SYMBOL_GPL(cx231xx_stop_TS1); */
1280 void cx231xx_start_TS1(struct cx231xx *dev)
1281 {
1282 	u8 val[4] = { 0, 0, 0, 0 };
1283 
1284 	val[0] = 0x03;
1285 	val[1] = 0x03;
1286 	val[2] = 0x00;
1287 	val[3] = 0x00;
1288 	cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
1289 			TS_MODE_REG, val, 4);
1290 
1291 	val[0] = 0x04;
1292 	val[1] = 0xA3;
1293 	val[2] = 0x3B;
1294 	val[3] = 0x00;
1295 	cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
1296 			TS1_CFG_REG, val, 4);
1297 }
1298 /* EXPORT_SYMBOL_GPL(cx231xx_start_TS1); */
1299 /*****************************************************************
1300 *             Device Init/UnInit functions                       *
1301 ******************************************************************/
1302 int cx231xx_dev_init(struct cx231xx *dev)
1303 {
1304 	int errCode = 0;
1305 
1306 	/* Initialize I2C bus */
1307 
1308 	/* External Master 1 Bus */
1309 	dev->i2c_bus[0].nr = 0;
1310 	dev->i2c_bus[0].dev = dev;
1311 	dev->i2c_bus[0].i2c_period = I2C_SPEED_100K;	/* 100 KHz */
1312 	dev->i2c_bus[0].i2c_nostop = 0;
1313 	dev->i2c_bus[0].i2c_reserve = 0;
1314 	dev->i2c_bus[0].i2c_rc = -ENODEV;
1315 
1316 	/* External Master 2 Bus */
1317 	dev->i2c_bus[1].nr = 1;
1318 	dev->i2c_bus[1].dev = dev;
1319 	dev->i2c_bus[1].i2c_period = I2C_SPEED_100K;	/* 100 KHz */
1320 	dev->i2c_bus[1].i2c_nostop = 0;
1321 	dev->i2c_bus[1].i2c_reserve = 0;
1322 	dev->i2c_bus[1].i2c_rc = -ENODEV;
1323 
1324 	/* Internal Master 3 Bus */
1325 	dev->i2c_bus[2].nr = 2;
1326 	dev->i2c_bus[2].dev = dev;
1327 	dev->i2c_bus[2].i2c_period = I2C_SPEED_100K;	/* 100kHz */
1328 	dev->i2c_bus[2].i2c_nostop = 0;
1329 	dev->i2c_bus[2].i2c_reserve = 0;
1330 	dev->i2c_bus[2].i2c_rc = -ENODEV;
1331 
1332 	/* register I2C buses */
1333 	errCode = cx231xx_i2c_register(&dev->i2c_bus[0]);
1334 	if (errCode < 0)
1335 		return errCode;
1336 	errCode = cx231xx_i2c_register(&dev->i2c_bus[1]);
1337 	if (errCode < 0)
1338 		return errCode;
1339 	errCode = cx231xx_i2c_register(&dev->i2c_bus[2]);
1340 	if (errCode < 0)
1341 		return errCode;
1342 
1343 	errCode = cx231xx_i2c_mux_create(dev);
1344 	if (errCode < 0) {
1345 		dev_err(dev->dev,
1346 			"%s: Failed to create I2C mux\n", __func__);
1347 		return errCode;
1348 	}
1349 	errCode = cx231xx_i2c_mux_register(dev, 0);
1350 	if (errCode < 0)
1351 		return errCode;
1352 
1353 	errCode = cx231xx_i2c_mux_register(dev, 1);
1354 	if (errCode < 0)
1355 		return errCode;
1356 
1357 	/* scan the real bus segments in the order of physical port numbers */
1358 	cx231xx_do_i2c_scan(dev, I2C_0);
1359 	cx231xx_do_i2c_scan(dev, I2C_1_MUX_1);
1360 	cx231xx_do_i2c_scan(dev, I2C_2);
1361 	cx231xx_do_i2c_scan(dev, I2C_1_MUX_3);
1362 
1363 	/* init hardware */
1364 	/* Note : with out calling set power mode function,
1365 	afe can not be set up correctly */
1366 	if (dev->board.external_av) {
1367 		errCode = cx231xx_set_power_mode(dev,
1368 				 POLARIS_AVMODE_ENXTERNAL_AV);
1369 		if (errCode < 0) {
1370 			dev_err(dev->dev,
1371 				"%s: Failed to set Power - errCode [%d]!\n",
1372 				__func__, errCode);
1373 			return errCode;
1374 		}
1375 	} else {
1376 		errCode = cx231xx_set_power_mode(dev,
1377 				 POLARIS_AVMODE_ANALOGT_TV);
1378 		if (errCode < 0) {
1379 			dev_err(dev->dev,
1380 				"%s: Failed to set Power - errCode [%d]!\n",
1381 				__func__, errCode);
1382 			return errCode;
1383 		}
1384 	}
1385 
1386 	/* reset the Tuner, if it is a Xceive tuner */
1387 	if ((dev->board.tuner_type == TUNER_XC5000) ||
1388 	    (dev->board.tuner_type == TUNER_XC2028))
1389 			cx231xx_gpio_set(dev, dev->board.tuner_gpio);
1390 
1391 	/* initialize Colibri block */
1392 	errCode = cx231xx_afe_init_super_block(dev, 0x23c);
1393 	if (errCode < 0) {
1394 		dev_err(dev->dev,
1395 			"%s: cx231xx_afe init super block - errCode [%d]!\n",
1396 			__func__, errCode);
1397 		return errCode;
1398 	}
1399 	errCode = cx231xx_afe_init_channels(dev);
1400 	if (errCode < 0) {
1401 		dev_err(dev->dev,
1402 			"%s: cx231xx_afe init channels - errCode [%d]!\n",
1403 			__func__, errCode);
1404 		return errCode;
1405 	}
1406 
1407 	/* Set DIF in By pass mode */
1408 	errCode = cx231xx_dif_set_standard(dev, DIF_USE_BASEBAND);
1409 	if (errCode < 0) {
1410 		dev_err(dev->dev,
1411 			"%s: cx231xx_dif set to By pass mode - errCode [%d]!\n",
1412 			__func__, errCode);
1413 		return errCode;
1414 	}
1415 
1416 	/* I2S block related functions */
1417 	errCode = cx231xx_i2s_blk_initialize(dev);
1418 	if (errCode < 0) {
1419 		dev_err(dev->dev,
1420 			"%s: cx231xx_i2s block initialize - errCode [%d]!\n",
1421 			__func__, errCode);
1422 		return errCode;
1423 	}
1424 
1425 	/* init control pins */
1426 	errCode = cx231xx_init_ctrl_pin_status(dev);
1427 	if (errCode < 0) {
1428 		dev_err(dev->dev,
1429 			"%s: cx231xx_init ctrl pins - errCode [%d]!\n",
1430 			__func__, errCode);
1431 		return errCode;
1432 	}
1433 
1434 	/* set AGC mode to Analog */
1435 	switch (dev->model) {
1436 	case CX231XX_BOARD_CNXT_CARRAERA:
1437 	case CX231XX_BOARD_CNXT_RDE_250:
1438 	case CX231XX_BOARD_CNXT_SHELBY:
1439 	case CX231XX_BOARD_CNXT_RDU_250:
1440 	errCode = cx231xx_set_agc_analog_digital_mux_select(dev, 1);
1441 		break;
1442 	case CX231XX_BOARD_CNXT_RDE_253S:
1443 	case CX231XX_BOARD_CNXT_RDU_253S:
1444 	case CX231XX_BOARD_HAUPPAUGE_EXETER:
1445 	case CX231XX_BOARD_HAUPPAUGE_930C_HD_1113xx:
1446 	case CX231XX_BOARD_PV_PLAYTV_USB_HYBRID:
1447 	case CX231XX_BOARD_HAUPPAUGE_USB2_FM_PAL:
1448 	case CX231XX_BOARD_HAUPPAUGE_USB2_FM_NTSC:
1449 	errCode = cx231xx_set_agc_analog_digital_mux_select(dev, 0);
1450 		break;
1451 	default:
1452 		break;
1453 	}
1454 	if (errCode < 0) {
1455 		dev_err(dev->dev,
1456 			"%s: cx231xx_AGC mode to Analog - errCode [%d]!\n",
1457 			__func__, errCode);
1458 		return errCode;
1459 	}
1460 
1461 	/* set all alternate settings to zero initially */
1462 	cx231xx_set_alt_setting(dev, INDEX_VIDEO, 0);
1463 	cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
1464 	cx231xx_set_alt_setting(dev, INDEX_HANC, 0);
1465 	if (dev->board.has_dvb)
1466 		cx231xx_set_alt_setting(dev, INDEX_TS1, 0);
1467 
1468 	errCode = 0;
1469 	return errCode;
1470 }
1471 EXPORT_SYMBOL_GPL(cx231xx_dev_init);
1472 
1473 void cx231xx_dev_uninit(struct cx231xx *dev)
1474 {
1475 	/* Un Initialize I2C bus */
1476 	cx231xx_i2c_mux_unregister(dev);
1477 	cx231xx_i2c_unregister(&dev->i2c_bus[2]);
1478 	cx231xx_i2c_unregister(&dev->i2c_bus[1]);
1479 	cx231xx_i2c_unregister(&dev->i2c_bus[0]);
1480 }
1481 EXPORT_SYMBOL_GPL(cx231xx_dev_uninit);
1482 
1483 /*****************************************************************
1484 *              G P I O related functions                         *
1485 ******************************************************************/
1486 int cx231xx_send_gpio_cmd(struct cx231xx *dev, u32 gpio_bit, u8 *gpio_val,
1487 			  u8 len, u8 request, u8 direction)
1488 {
1489 	int status = 0;
1490 	struct VENDOR_REQUEST_IN ven_req;
1491 
1492 	/* Set wValue */
1493 	ven_req.wValue = (u16) (gpio_bit >> 16 & 0xffff);
1494 
1495 	/* set request */
1496 	if (!request) {
1497 		if (direction)
1498 			ven_req.bRequest = VRT_GET_GPIO;	/* 0x9 gpio */
1499 		else
1500 			ven_req.bRequest = VRT_SET_GPIO;	/* 0x8 gpio */
1501 	} else {
1502 		if (direction)
1503 			ven_req.bRequest = VRT_GET_GPIE;	/* 0xb gpie */
1504 		else
1505 			ven_req.bRequest = VRT_SET_GPIE;	/* 0xa gpie */
1506 	}
1507 
1508 	/* set index value */
1509 	ven_req.wIndex = (u16) (gpio_bit & 0xffff);
1510 
1511 	/* set wLength value */
1512 	ven_req.wLength = len;
1513 
1514 	/* set bData value */
1515 	ven_req.bData = 0;
1516 
1517 	/* set the buffer for read / write */
1518 	ven_req.pBuff = gpio_val;
1519 
1520 	/* set the direction */
1521 	if (direction) {
1522 		ven_req.direction = USB_DIR_IN;
1523 		memset(ven_req.pBuff, 0x00, ven_req.wLength);
1524 	} else
1525 		ven_req.direction = USB_DIR_OUT;
1526 
1527 
1528 	/* call common vendor command request */
1529 	status = cx231xx_send_vendor_cmd(dev, &ven_req);
1530 	if (status < 0) {
1531 		dev_err(dev->dev, "%s: failed with status -%d\n",
1532 			__func__, status);
1533 	}
1534 
1535 	return status;
1536 }
1537 EXPORT_SYMBOL_GPL(cx231xx_send_gpio_cmd);
1538 
1539 /*****************************************************************
1540  *    C O N T R O L - Register R E A D / W R I T E functions     *
1541  *****************************************************************/
1542 int cx231xx_mode_register(struct cx231xx *dev, u16 address, u32 mode)
1543 {
1544 	u8 value[4] = { 0x0, 0x0, 0x0, 0x0 };
1545 	u32 tmp = 0;
1546 	int status = 0;
1547 
1548 	status =
1549 	    cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, address, value, 4);
1550 	if (status < 0)
1551 		return status;
1552 
1553 	tmp = le32_to_cpu(*((__le32 *) value));
1554 	tmp |= mode;
1555 
1556 	value[0] = (u8) tmp;
1557 	value[1] = (u8) (tmp >> 8);
1558 	value[2] = (u8) (tmp >> 16);
1559 	value[3] = (u8) (tmp >> 24);
1560 
1561 	status =
1562 	    cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, address, value, 4);
1563 
1564 	return status;
1565 }
1566 
1567 /*****************************************************************
1568  *            I 2 C Internal C O N T R O L   functions           *
1569  *****************************************************************/
1570 int cx231xx_read_i2c_master(struct cx231xx *dev, u8 dev_addr, u16 saddr,
1571 			  u8 saddr_len, u32 *data, u8 data_len, int master)
1572 {
1573 	int status = 0;
1574 	struct cx231xx_i2c_xfer_data req_data;
1575 	u8 value[64] = "0";
1576 
1577 	if (saddr_len == 0)
1578 		saddr = 0;
1579 	else if (saddr_len == 1)
1580 		saddr &= 0xff;
1581 
1582 	/* prepare xfer_data struct */
1583 	req_data.dev_addr = dev_addr >> 1;
1584 	req_data.direction = I2C_M_RD;
1585 	req_data.saddr_len = saddr_len;
1586 	req_data.saddr_dat = saddr;
1587 	req_data.buf_size = data_len;
1588 	req_data.p_buffer = (u8 *) value;
1589 
1590 	/* usb send command */
1591 	if (master == 0)
1592 		status = dev->cx231xx_send_usb_command(&dev->i2c_bus[0],
1593 					 &req_data);
1594 	else if (master == 1)
1595 		status = dev->cx231xx_send_usb_command(&dev->i2c_bus[1],
1596 					 &req_data);
1597 	else if (master == 2)
1598 		status = dev->cx231xx_send_usb_command(&dev->i2c_bus[2],
1599 					 &req_data);
1600 
1601 	if (status >= 0) {
1602 		/* Copy the data read back to main buffer */
1603 		if (data_len == 1)
1604 			*data = value[0];
1605 		else if (data_len == 4)
1606 			*data =
1607 			    value[0] | value[1] << 8 | value[2] << 16 | value[3]
1608 			    << 24;
1609 		else if (data_len > 4)
1610 			*data = value[saddr];
1611 	}
1612 
1613 	return status;
1614 }
1615 
1616 int cx231xx_write_i2c_master(struct cx231xx *dev, u8 dev_addr, u16 saddr,
1617 			   u8 saddr_len, u32 data, u8 data_len, int master)
1618 {
1619 	int status = 0;
1620 	u8 value[4] = { 0, 0, 0, 0 };
1621 	struct cx231xx_i2c_xfer_data req_data;
1622 
1623 	value[0] = (u8) data;
1624 	value[1] = (u8) (data >> 8);
1625 	value[2] = (u8) (data >> 16);
1626 	value[3] = (u8) (data >> 24);
1627 
1628 	if (saddr_len == 0)
1629 		saddr = 0;
1630 	else if (saddr_len == 1)
1631 		saddr &= 0xff;
1632 
1633 	/* prepare xfer_data struct */
1634 	req_data.dev_addr = dev_addr >> 1;
1635 	req_data.direction = 0;
1636 	req_data.saddr_len = saddr_len;
1637 	req_data.saddr_dat = saddr;
1638 	req_data.buf_size = data_len;
1639 	req_data.p_buffer = value;
1640 
1641 	/* usb send command */
1642 	if (master == 0)
1643 		status = dev->cx231xx_send_usb_command(&dev->i2c_bus[0],
1644 				 &req_data);
1645 	else if (master == 1)
1646 		status = dev->cx231xx_send_usb_command(&dev->i2c_bus[1],
1647 				 &req_data);
1648 	else if (master == 2)
1649 		status = dev->cx231xx_send_usb_command(&dev->i2c_bus[2],
1650 				 &req_data);
1651 
1652 	return status;
1653 }
1654 
1655 int cx231xx_read_i2c_data(struct cx231xx *dev, u8 dev_addr, u16 saddr,
1656 			  u8 saddr_len, u32 *data, u8 data_len)
1657 {
1658 	int status = 0;
1659 	struct cx231xx_i2c_xfer_data req_data;
1660 	u8 value[4] = { 0, 0, 0, 0 };
1661 
1662 	if (saddr_len == 0)
1663 		saddr = 0;
1664 	else if (saddr_len == 1)
1665 		saddr &= 0xff;
1666 
1667 	/* prepare xfer_data struct */
1668 	req_data.dev_addr = dev_addr >> 1;
1669 	req_data.direction = I2C_M_RD;
1670 	req_data.saddr_len = saddr_len;
1671 	req_data.saddr_dat = saddr;
1672 	req_data.buf_size = data_len;
1673 	req_data.p_buffer = (u8 *) value;
1674 
1675 	/* usb send command */
1676 	status = dev->cx231xx_send_usb_command(&dev->i2c_bus[0], &req_data);
1677 
1678 	if (status >= 0) {
1679 		/* Copy the data read back to main buffer */
1680 		if (data_len == 1)
1681 			*data = value[0];
1682 		else
1683 			*data =
1684 			    value[0] | value[1] << 8 | value[2] << 16 | value[3]
1685 			    << 24;
1686 	}
1687 
1688 	return status;
1689 }
1690 
1691 int cx231xx_write_i2c_data(struct cx231xx *dev, u8 dev_addr, u16 saddr,
1692 			   u8 saddr_len, u32 data, u8 data_len)
1693 {
1694 	int status = 0;
1695 	u8 value[4] = { 0, 0, 0, 0 };
1696 	struct cx231xx_i2c_xfer_data req_data;
1697 
1698 	value[0] = (u8) data;
1699 	value[1] = (u8) (data >> 8);
1700 	value[2] = (u8) (data >> 16);
1701 	value[3] = (u8) (data >> 24);
1702 
1703 	if (saddr_len == 0)
1704 		saddr = 0;
1705 	else if (saddr_len == 1)
1706 		saddr &= 0xff;
1707 
1708 	/* prepare xfer_data struct */
1709 	req_data.dev_addr = dev_addr >> 1;
1710 	req_data.direction = 0;
1711 	req_data.saddr_len = saddr_len;
1712 	req_data.saddr_dat = saddr;
1713 	req_data.buf_size = data_len;
1714 	req_data.p_buffer = value;
1715 
1716 	/* usb send command */
1717 	status = dev->cx231xx_send_usb_command(&dev->i2c_bus[0], &req_data);
1718 
1719 	return status;
1720 }
1721 
1722 int cx231xx_reg_mask_write(struct cx231xx *dev, u8 dev_addr, u8 size,
1723 			   u16 register_address, u8 bit_start, u8 bit_end,
1724 			   u32 value)
1725 {
1726 	int status = 0;
1727 	u32 tmp;
1728 	u32 mask = 0;
1729 	int i;
1730 
1731 	if (bit_start > (size - 1) || bit_end > (size - 1))
1732 		return -1;
1733 
1734 	if (size == 8) {
1735 		status =
1736 		    cx231xx_read_i2c_data(dev, dev_addr, register_address, 2,
1737 					  &tmp, 1);
1738 	} else {
1739 		status =
1740 		    cx231xx_read_i2c_data(dev, dev_addr, register_address, 2,
1741 					  &tmp, 4);
1742 	}
1743 
1744 	if (status < 0)
1745 		return status;
1746 
1747 	mask = 1 << bit_end;
1748 	for (i = bit_end; i > bit_start && i > 0; i--)
1749 		mask = mask + (1 << (i - 1));
1750 
1751 	value <<= bit_start;
1752 
1753 	if (size == 8) {
1754 		tmp &= ~mask;
1755 		tmp |= value;
1756 		tmp &= 0xff;
1757 		status =
1758 		    cx231xx_write_i2c_data(dev, dev_addr, register_address, 2,
1759 					   tmp, 1);
1760 	} else {
1761 		tmp &= ~mask;
1762 		tmp |= value;
1763 		status =
1764 		    cx231xx_write_i2c_data(dev, dev_addr, register_address, 2,
1765 					   tmp, 4);
1766 	}
1767 
1768 	return status;
1769 }
1770 
1771 int cx231xx_read_modify_write_i2c_dword(struct cx231xx *dev, u8 dev_addr,
1772 					u16 saddr, u32 mask, u32 value)
1773 {
1774 	u32 temp;
1775 	int status = 0;
1776 
1777 	status = cx231xx_read_i2c_data(dev, dev_addr, saddr, 2, &temp, 4);
1778 
1779 	if (status < 0)
1780 		return status;
1781 
1782 	temp &= ~mask;
1783 	temp |= value;
1784 
1785 	status = cx231xx_write_i2c_data(dev, dev_addr, saddr, 2, temp, 4);
1786 
1787 	return status;
1788 }
1789 
1790 u32 cx231xx_set_field(u32 field_mask, u32 data)
1791 {
1792 	u32 temp;
1793 
1794 	for (temp = field_mask; (temp & 1) == 0; temp >>= 1)
1795 		data <<= 1;
1796 
1797 	return data;
1798 }
1799