1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3    cx231xx-core.c - driver for Conexant Cx23100/101/102
4 				USB video capture devices
5 
6    Copyright (C) 2008 <srinivasa.deevi at conexant dot com>
7 				Based on em28xx driver
8 
9  */
10 
11 #include "cx231xx.h"
12 #include <linux/init.h>
13 #include <linux/list.h>
14 #include <linux/module.h>
15 #include <linux/slab.h>
16 #include <linux/vmalloc.h>
17 #include <media/v4l2-common.h>
18 #include <media/tuner.h>
19 
20 #include "cx231xx-reg.h"
21 
22 /* #define ENABLE_DEBUG_ISOC_FRAMES */
23 
24 static unsigned int core_debug;
25 module_param(core_debug, int, 0644);
26 MODULE_PARM_DESC(core_debug, "enable debug messages [core]");
27 
28 #define cx231xx_coredbg(fmt, arg...) do {\
29 	if (core_debug) \
30 		printk(KERN_INFO "%s %s :"fmt, \
31 			 dev->name, __func__ , ##arg); } while (0)
32 
33 static unsigned int reg_debug;
34 module_param(reg_debug, int, 0644);
35 MODULE_PARM_DESC(reg_debug, "enable debug messages [URB reg]");
36 
37 static int alt = CX231XX_PINOUT;
38 module_param(alt, int, 0644);
39 MODULE_PARM_DESC(alt, "alternate setting to use for video endpoint");
40 
41 #define cx231xx_isocdbg(fmt, arg...) do {\
42 	if (core_debug) \
43 		printk(KERN_INFO "%s %s :"fmt, \
44 			 dev->name, __func__ , ##arg); } while (0)
45 
46 /*****************************************************************
47 *             Device control list functions					 *
48 ******************************************************************/
49 
50 LIST_HEAD(cx231xx_devlist);
51 static DEFINE_MUTEX(cx231xx_devlist_mutex);
52 
53 /*
54  * cx231xx_realease_resources()
55  * unregisters the v4l2,i2c and usb devices
56  * called when the device gets disconnected or at module unload
57 */
58 void cx231xx_remove_from_devlist(struct cx231xx *dev)
59 {
60 	if (dev == NULL)
61 		return;
62 	if (dev->udev == NULL)
63 		return;
64 
65 	if (atomic_read(&dev->devlist_count) > 0) {
66 		mutex_lock(&cx231xx_devlist_mutex);
67 		list_del(&dev->devlist);
68 		atomic_dec(&dev->devlist_count);
69 		mutex_unlock(&cx231xx_devlist_mutex);
70 	}
71 };
72 
73 void cx231xx_add_into_devlist(struct cx231xx *dev)
74 {
75 	mutex_lock(&cx231xx_devlist_mutex);
76 	list_add_tail(&dev->devlist, &cx231xx_devlist);
77 	atomic_inc(&dev->devlist_count);
78 	mutex_unlock(&cx231xx_devlist_mutex);
79 };
80 
81 static LIST_HEAD(cx231xx_extension_devlist);
82 
83 int cx231xx_register_extension(struct cx231xx_ops *ops)
84 {
85 	struct cx231xx *dev = NULL;
86 
87 	mutex_lock(&cx231xx_devlist_mutex);
88 	list_add_tail(&ops->next, &cx231xx_extension_devlist);
89 	list_for_each_entry(dev, &cx231xx_devlist, devlist) {
90 		ops->init(dev);
91 		dev_info(dev->dev, "%s initialized\n", ops->name);
92 	}
93 	mutex_unlock(&cx231xx_devlist_mutex);
94 	return 0;
95 }
96 EXPORT_SYMBOL(cx231xx_register_extension);
97 
98 void cx231xx_unregister_extension(struct cx231xx_ops *ops)
99 {
100 	struct cx231xx *dev = NULL;
101 
102 	mutex_lock(&cx231xx_devlist_mutex);
103 	list_for_each_entry(dev, &cx231xx_devlist, devlist) {
104 		ops->fini(dev);
105 		dev_info(dev->dev, "%s removed\n", ops->name);
106 	}
107 
108 	list_del(&ops->next);
109 	mutex_unlock(&cx231xx_devlist_mutex);
110 }
111 EXPORT_SYMBOL(cx231xx_unregister_extension);
112 
113 void cx231xx_init_extension(struct cx231xx *dev)
114 {
115 	struct cx231xx_ops *ops = NULL;
116 
117 	mutex_lock(&cx231xx_devlist_mutex);
118 	if (!list_empty(&cx231xx_extension_devlist)) {
119 		list_for_each_entry(ops, &cx231xx_extension_devlist, next) {
120 			if (ops->init)
121 				ops->init(dev);
122 		}
123 	}
124 	mutex_unlock(&cx231xx_devlist_mutex);
125 }
126 
127 void cx231xx_close_extension(struct cx231xx *dev)
128 {
129 	struct cx231xx_ops *ops = NULL;
130 
131 	mutex_lock(&cx231xx_devlist_mutex);
132 	if (!list_empty(&cx231xx_extension_devlist)) {
133 		list_for_each_entry(ops, &cx231xx_extension_devlist, next) {
134 			if (ops->fini)
135 				ops->fini(dev);
136 		}
137 	}
138 	mutex_unlock(&cx231xx_devlist_mutex);
139 }
140 
141 /****************************************************************
142 *               U S B related functions                         *
143 *****************************************************************/
144 int cx231xx_send_usb_command(struct cx231xx_i2c *i2c_bus,
145 			     struct cx231xx_i2c_xfer_data *req_data)
146 {
147 	int status = 0;
148 	struct cx231xx *dev = i2c_bus->dev;
149 	struct VENDOR_REQUEST_IN ven_req;
150 
151 	u8 saddr_len = 0;
152 	u8 _i2c_period = 0;
153 	u8 _i2c_nostop = 0;
154 	u8 _i2c_reserve = 0;
155 
156 	if (dev->state & DEV_DISCONNECTED)
157 		return -ENODEV;
158 
159 	/* Get the I2C period, nostop and reserve parameters */
160 	_i2c_period = i2c_bus->i2c_period;
161 	_i2c_nostop = i2c_bus->i2c_nostop;
162 	_i2c_reserve = i2c_bus->i2c_reserve;
163 
164 	saddr_len = req_data->saddr_len;
165 
166 	/* Set wValue */
167 	ven_req.wValue = (req_data->dev_addr << 9 | _i2c_period << 4 |
168 			  saddr_len << 2 | _i2c_nostop << 1 | I2C_SYNC |
169 			  _i2c_reserve << 6);
170 
171 	/* set channel number */
172 	if (req_data->direction & I2C_M_RD) {
173 		/* channel number, for read,spec required channel_num +4 */
174 		ven_req.bRequest = i2c_bus->nr + 4;
175 	} else
176 		ven_req.bRequest = i2c_bus->nr;	/* channel number,  */
177 
178 	/* set index value */
179 	switch (saddr_len) {
180 	case 0:
181 		ven_req.wIndex = 0;	/* need check */
182 		break;
183 	case 1:
184 		ven_req.wIndex = (req_data->saddr_dat & 0xff);
185 		break;
186 	case 2:
187 		ven_req.wIndex = req_data->saddr_dat;
188 		break;
189 	}
190 
191 	/* set wLength value */
192 	ven_req.wLength = req_data->buf_size;
193 
194 	/* set bData value */
195 	ven_req.bData = 0;
196 
197 	/* set the direction */
198 	if (req_data->direction) {
199 		ven_req.direction = USB_DIR_IN;
200 		memset(req_data->p_buffer, 0x00, ven_req.wLength);
201 	} else
202 		ven_req.direction = USB_DIR_OUT;
203 
204 	/* set the buffer for read / write */
205 	ven_req.pBuff = req_data->p_buffer;
206 
207 
208 	/* call common vendor command request */
209 	status = cx231xx_send_vendor_cmd(dev, &ven_req);
210 	if (status < 0 && !dev->i2c_scan_running) {
211 		dev_err(dev->dev, "%s: failed with status -%d\n",
212 			__func__, status);
213 	}
214 
215 	return status;
216 }
217 EXPORT_SYMBOL_GPL(cx231xx_send_usb_command);
218 
219 /*
220  * Sends/Receives URB control messages, assuring to use a kalloced buffer
221  * for all operations (dev->urb_buf), to avoid using stacked buffers, as
222  * they aren't safe for usage with USB, due to DMA restrictions.
223  * Also implements the debug code for control URB's.
224  */
225 static int __usb_control_msg(struct cx231xx *dev, unsigned int pipe,
226 	__u8 request, __u8 requesttype, __u16 value, __u16 index,
227 	void *data, __u16 size, int timeout)
228 {
229 	int rc, i;
230 
231 	if (reg_debug) {
232 		printk(KERN_DEBUG "%s: (pipe 0x%08x): %s:  %02x %02x %02x %02x %02x %02x %02x %02x ",
233 				dev->name,
234 				pipe,
235 				(requesttype & USB_DIR_IN) ? "IN" : "OUT",
236 				requesttype,
237 				request,
238 				value & 0xff, value >> 8,
239 				index & 0xff, index >> 8,
240 				size & 0xff, size >> 8);
241 		if (!(requesttype & USB_DIR_IN)) {
242 			printk(KERN_CONT ">>>");
243 			for (i = 0; i < size; i++)
244 				printk(KERN_CONT " %02x",
245 				       ((unsigned char *)data)[i]);
246 		}
247 	}
248 
249 	/* Do the real call to usb_control_msg */
250 	mutex_lock(&dev->ctrl_urb_lock);
251 	if (!(requesttype & USB_DIR_IN) && size)
252 		memcpy(dev->urb_buf, data, size);
253 	rc = usb_control_msg(dev->udev, pipe, request, requesttype, value,
254 			     index, dev->urb_buf, size, timeout);
255 	if ((requesttype & USB_DIR_IN) && size)
256 		memcpy(data, dev->urb_buf, size);
257 	mutex_unlock(&dev->ctrl_urb_lock);
258 
259 	if (reg_debug) {
260 		if (unlikely(rc < 0)) {
261 			printk(KERN_CONT "FAILED!\n");
262 			return rc;
263 		}
264 
265 		if ((requesttype & USB_DIR_IN)) {
266 			printk(KERN_CONT "<<<");
267 			for (i = 0; i < size; i++)
268 				printk(KERN_CONT " %02x",
269 				       ((unsigned char *)data)[i]);
270 		}
271 		printk(KERN_CONT "\n");
272 	}
273 
274 	return rc;
275 }
276 
277 
278 /*
279  * cx231xx_read_ctrl_reg()
280  * reads data from the usb device specifying bRequest and wValue
281  */
282 int cx231xx_read_ctrl_reg(struct cx231xx *dev, u8 req, u16 reg,
283 			  char *buf, int len)
284 {
285 	u8 val = 0;
286 	int ret;
287 	int pipe = usb_rcvctrlpipe(dev->udev, 0);
288 
289 	if (dev->state & DEV_DISCONNECTED)
290 		return -ENODEV;
291 
292 	if (len > URB_MAX_CTRL_SIZE)
293 		return -EINVAL;
294 
295 	switch (len) {
296 	case 1:
297 		val = ENABLE_ONE_BYTE;
298 		break;
299 	case 2:
300 		val = ENABLE_TWE_BYTE;
301 		break;
302 	case 3:
303 		val = ENABLE_THREE_BYTE;
304 		break;
305 	case 4:
306 		val = ENABLE_FOUR_BYTE;
307 		break;
308 	default:
309 		val = 0xFF;	/* invalid option */
310 	}
311 
312 	if (val == 0xFF)
313 		return -EINVAL;
314 
315 	ret = __usb_control_msg(dev, pipe, req,
316 			      USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
317 			      val, reg, buf, len, HZ);
318 	return ret;
319 }
320 
321 int cx231xx_send_vendor_cmd(struct cx231xx *dev,
322 				struct VENDOR_REQUEST_IN *ven_req)
323 {
324 	int ret;
325 	int pipe = 0;
326 	int unsend_size = 0;
327 	u8 *pdata;
328 
329 	if (dev->state & DEV_DISCONNECTED)
330 		return -ENODEV;
331 
332 	if ((ven_req->wLength > URB_MAX_CTRL_SIZE))
333 		return -EINVAL;
334 
335 	if (ven_req->direction)
336 		pipe = usb_rcvctrlpipe(dev->udev, 0);
337 	else
338 		pipe = usb_sndctrlpipe(dev->udev, 0);
339 
340 	/*
341 	 * If the cx23102 read more than 4 bytes with i2c bus,
342 	 * need chop to 4 byte per request
343 	 */
344 	if ((ven_req->wLength > 4) && ((ven_req->bRequest == 0x4) ||
345 					(ven_req->bRequest == 0x5) ||
346 					(ven_req->bRequest == 0x6) ||
347 
348 					/* Internal Master 3 Bus can send
349 					 * and receive only 4 bytes per time
350 					 */
351 					(ven_req->bRequest == 0x2))) {
352 		unsend_size = 0;
353 		pdata = ven_req->pBuff;
354 
355 
356 		unsend_size = ven_req->wLength;
357 
358 		/* the first package */
359 		ven_req->wValue = ven_req->wValue & 0xFFFB;
360 		ven_req->wValue = (ven_req->wValue & 0xFFBD) | 0x2;
361 		ret = __usb_control_msg(dev, pipe, ven_req->bRequest,
362 			ven_req->direction | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
363 			ven_req->wValue, ven_req->wIndex, pdata,
364 			0x0004, HZ);
365 		unsend_size = unsend_size - 4;
366 
367 		/* the middle package */
368 		ven_req->wValue = (ven_req->wValue & 0xFFBD) | 0x42;
369 		while (unsend_size - 4 > 0) {
370 			pdata = pdata + 4;
371 			ret = __usb_control_msg(dev, pipe,
372 				ven_req->bRequest,
373 				ven_req->direction | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
374 				ven_req->wValue, ven_req->wIndex, pdata,
375 				0x0004, HZ);
376 			unsend_size = unsend_size - 4;
377 		}
378 
379 		/* the last package */
380 		ven_req->wValue = (ven_req->wValue & 0xFFBD) | 0x40;
381 		pdata = pdata + 4;
382 		ret = __usb_control_msg(dev, pipe, ven_req->bRequest,
383 			ven_req->direction | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
384 			ven_req->wValue, ven_req->wIndex, pdata,
385 			unsend_size, HZ);
386 	} else {
387 		ret = __usb_control_msg(dev, pipe, ven_req->bRequest,
388 				ven_req->direction | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
389 				ven_req->wValue, ven_req->wIndex,
390 				ven_req->pBuff, ven_req->wLength, HZ);
391 	}
392 
393 	return ret;
394 }
395 
396 /*
397  * cx231xx_write_ctrl_reg()
398  * sends data to the usb device, specifying bRequest
399  */
400 int cx231xx_write_ctrl_reg(struct cx231xx *dev, u8 req, u16 reg, char *buf,
401 			   int len)
402 {
403 	u8 val = 0;
404 	int ret;
405 	int pipe = usb_sndctrlpipe(dev->udev, 0);
406 
407 	if (dev->state & DEV_DISCONNECTED)
408 		return -ENODEV;
409 
410 	if ((len < 1) || (len > URB_MAX_CTRL_SIZE))
411 		return -EINVAL;
412 
413 	switch (len) {
414 	case 1:
415 		val = ENABLE_ONE_BYTE;
416 		break;
417 	case 2:
418 		val = ENABLE_TWE_BYTE;
419 		break;
420 	case 3:
421 		val = ENABLE_THREE_BYTE;
422 		break;
423 	case 4:
424 		val = ENABLE_FOUR_BYTE;
425 		break;
426 	default:
427 		val = 0xFF;	/* invalid option */
428 	}
429 
430 	if (val == 0xFF)
431 		return -EINVAL;
432 
433 	if (reg_debug) {
434 		int byte;
435 
436 		cx231xx_isocdbg("(pipe 0x%08x): OUT: %02x %02x %02x %02x %02x %02x %02x %02x >>>",
437 			pipe,
438 			USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
439 			req, 0, val, reg & 0xff,
440 			reg >> 8, len & 0xff, len >> 8);
441 
442 		for (byte = 0; byte < len; byte++)
443 			cx231xx_isocdbg(" %02x", (unsigned char)buf[byte]);
444 		cx231xx_isocdbg("\n");
445 	}
446 
447 	ret = __usb_control_msg(dev, pipe, req,
448 			      USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
449 			      val, reg, buf, len, HZ);
450 
451 	return ret;
452 }
453 
454 /****************************************************************
455 *           USB Alternate Setting functions                     *
456 *****************************************************************/
457 
458 int cx231xx_set_video_alternate(struct cx231xx *dev)
459 {
460 	int errCode, prev_alt = dev->video_mode.alt;
461 	unsigned int min_pkt_size = dev->width * 2 + 4;
462 	u32 usb_interface_index = 0;
463 
464 	/* When image size is bigger than a certain value,
465 	   the frame size should be increased, otherwise, only
466 	   green screen will be received.
467 	 */
468 	if (dev->width * 2 * dev->height > 720 * 240 * 2)
469 		min_pkt_size *= 2;
470 
471 	if (dev->width > 360) {
472 		/* resolutions: 720,704,640 */
473 		dev->video_mode.alt = 3;
474 	} else if (dev->width > 180) {
475 		/* resolutions: 360,352,320,240 */
476 		dev->video_mode.alt = 2;
477 	} else if (dev->width > 0) {
478 		/* resolutions: 180,176,160,128,88 */
479 		dev->video_mode.alt = 1;
480 	} else {
481 		/* Change to alt0 BULK to release USB bandwidth */
482 		dev->video_mode.alt = 0;
483 	}
484 
485 	if (dev->USE_ISO == 0)
486 		dev->video_mode.alt = 0;
487 
488 	cx231xx_coredbg("dev->video_mode.alt= %d\n", dev->video_mode.alt);
489 
490 	/* Get the correct video interface Index */
491 	usb_interface_index =
492 	    dev->current_pcb_config.hs_config_info[0].interface_info.
493 	    video_index + 1;
494 
495 	if (dev->video_mode.alt != prev_alt) {
496 		cx231xx_coredbg("minimum isoc packet size: %u (alt=%d)\n",
497 				min_pkt_size, dev->video_mode.alt);
498 
499 		if (dev->video_mode.alt_max_pkt_size != NULL)
500 			dev->video_mode.max_pkt_size =
501 			dev->video_mode.alt_max_pkt_size[dev->video_mode.alt];
502 		cx231xx_coredbg("setting alternate %d with wMaxPacketSize=%u\n",
503 				dev->video_mode.alt,
504 				dev->video_mode.max_pkt_size);
505 		errCode =
506 		    usb_set_interface(dev->udev, usb_interface_index,
507 				      dev->video_mode.alt);
508 		if (errCode < 0) {
509 			dev_err(dev->dev,
510 				"cannot change alt number to %d (error=%i)\n",
511 				dev->video_mode.alt, errCode);
512 			return errCode;
513 		}
514 	}
515 	return 0;
516 }
517 
518 int cx231xx_set_alt_setting(struct cx231xx *dev, u8 index, u8 alt)
519 {
520 	int status = 0;
521 	u32 usb_interface_index = 0;
522 	u32 max_pkt_size = 0;
523 
524 	switch (index) {
525 	case INDEX_TS1:
526 		usb_interface_index =
527 		    dev->current_pcb_config.hs_config_info[0].interface_info.
528 		    ts1_index + 1;
529 		dev->ts1_mode.alt = alt;
530 		if (dev->ts1_mode.alt_max_pkt_size != NULL)
531 			max_pkt_size = dev->ts1_mode.max_pkt_size =
532 			    dev->ts1_mode.alt_max_pkt_size[dev->ts1_mode.alt];
533 		break;
534 	case INDEX_TS2:
535 		usb_interface_index =
536 		    dev->current_pcb_config.hs_config_info[0].interface_info.
537 		    ts2_index + 1;
538 		break;
539 	case INDEX_AUDIO:
540 		usb_interface_index =
541 		    dev->current_pcb_config.hs_config_info[0].interface_info.
542 		    audio_index + 1;
543 		dev->adev.alt = alt;
544 		if (dev->adev.alt_max_pkt_size != NULL)
545 			max_pkt_size = dev->adev.max_pkt_size =
546 			    dev->adev.alt_max_pkt_size[dev->adev.alt];
547 		break;
548 	case INDEX_VIDEO:
549 		usb_interface_index =
550 		    dev->current_pcb_config.hs_config_info[0].interface_info.
551 		    video_index + 1;
552 		dev->video_mode.alt = alt;
553 		if (dev->video_mode.alt_max_pkt_size != NULL)
554 			max_pkt_size = dev->video_mode.max_pkt_size =
555 			    dev->video_mode.alt_max_pkt_size[dev->video_mode.
556 							     alt];
557 		break;
558 	case INDEX_VANC:
559 		if (dev->board.no_alt_vanc)
560 			return 0;
561 		usb_interface_index =
562 		    dev->current_pcb_config.hs_config_info[0].interface_info.
563 		    vanc_index + 1;
564 		dev->vbi_mode.alt = alt;
565 		if (dev->vbi_mode.alt_max_pkt_size != NULL)
566 			max_pkt_size = dev->vbi_mode.max_pkt_size =
567 			    dev->vbi_mode.alt_max_pkt_size[dev->vbi_mode.alt];
568 		break;
569 	case INDEX_HANC:
570 		usb_interface_index =
571 		    dev->current_pcb_config.hs_config_info[0].interface_info.
572 		    hanc_index + 1;
573 		dev->sliced_cc_mode.alt = alt;
574 		if (dev->sliced_cc_mode.alt_max_pkt_size != NULL)
575 			max_pkt_size = dev->sliced_cc_mode.max_pkt_size =
576 			    dev->sliced_cc_mode.alt_max_pkt_size[dev->
577 								 sliced_cc_mode.
578 								 alt];
579 		break;
580 	default:
581 		break;
582 	}
583 
584 	if (alt > 0 && max_pkt_size == 0) {
585 		dev_err(dev->dev,
586 			"can't change interface %d alt no. to %d: Max. Pkt size = 0\n",
587 			usb_interface_index, alt);
588 		/*To workaround error number=-71 on EP0 for videograbber,
589 		 need add following codes.*/
590 		if (dev->board.no_alt_vanc)
591 			return -1;
592 	}
593 
594 	cx231xx_coredbg("setting alternate %d with wMaxPacketSize=%u,Interface = %d\n",
595 			alt, max_pkt_size,
596 			usb_interface_index);
597 
598 	if (usb_interface_index > 0) {
599 		status = usb_set_interface(dev->udev, usb_interface_index, alt);
600 		if (status < 0) {
601 			dev_err(dev->dev,
602 				"can't change interface %d alt no. to %d (err=%i)\n",
603 				usb_interface_index, alt, status);
604 			return status;
605 		}
606 	}
607 
608 	return status;
609 }
610 EXPORT_SYMBOL_GPL(cx231xx_set_alt_setting);
611 
612 int cx231xx_gpio_set(struct cx231xx *dev, struct cx231xx_reg_seq *gpio)
613 {
614 	int rc = 0;
615 
616 	if (!gpio)
617 		return rc;
618 
619 	/* Send GPIO reset sequences specified at board entry */
620 	while (gpio->sleep >= 0) {
621 		rc = cx231xx_set_gpio_value(dev, gpio->bit, gpio->val);
622 		if (rc < 0)
623 			return rc;
624 
625 		if (gpio->sleep > 0)
626 			msleep(gpio->sleep);
627 
628 		gpio++;
629 	}
630 	return rc;
631 }
632 
633 int cx231xx_demod_reset(struct cx231xx *dev)
634 {
635 
636 	u8 status = 0;
637 	u8 value[4] = { 0, 0, 0, 0 };
638 
639 	status = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, PWR_CTL_EN,
640 				 value, 4);
641 
642 	cx231xx_coredbg("reg0x%x=0x%x 0x%x 0x%x 0x%x\n", PWR_CTL_EN,
643 			value[0], value[1], value[2], value[3]);
644 
645 	cx231xx_coredbg("Enter cx231xx_demod_reset()\n");
646 
647 	value[1] = (u8) 0x3;
648 	status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
649 					PWR_CTL_EN, value, 4);
650 	msleep(10);
651 
652 	value[1] = (u8) 0x0;
653 	status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
654 					PWR_CTL_EN, value, 4);
655 	msleep(10);
656 
657 	value[1] = (u8) 0x3;
658 	status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
659 					PWR_CTL_EN, value, 4);
660 	msleep(10);
661 
662 	status = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, PWR_CTL_EN,
663 				 value, 4);
664 
665 	cx231xx_coredbg("reg0x%x=0x%x 0x%x 0x%x 0x%x\n", PWR_CTL_EN,
666 			value[0], value[1], value[2], value[3]);
667 
668 	return status;
669 }
670 EXPORT_SYMBOL_GPL(cx231xx_demod_reset);
671 int is_fw_load(struct cx231xx *dev)
672 {
673 	return cx231xx_check_fw(dev);
674 }
675 EXPORT_SYMBOL_GPL(is_fw_load);
676 
677 int cx231xx_set_mode(struct cx231xx *dev, enum cx231xx_mode set_mode)
678 {
679 	int errCode = 0;
680 
681 	if (dev->mode == set_mode)
682 		return 0;
683 
684 	if (set_mode == CX231XX_SUSPEND) {
685 		/* Set the chip in power saving mode */
686 		dev->mode = set_mode;
687 	}
688 
689 	/* Resource is locked */
690 	if (dev->mode != CX231XX_SUSPEND)
691 		return -EINVAL;
692 
693 	dev->mode = set_mode;
694 
695 	if (dev->mode == CX231XX_DIGITAL_MODE)/* Set Digital power mode */ {
696 	/* set AGC mode to Digital */
697 		switch (dev->model) {
698 		case CX231XX_BOARD_CNXT_CARRAERA:
699 		case CX231XX_BOARD_CNXT_RDE_250:
700 		case CX231XX_BOARD_CNXT_SHELBY:
701 		case CX231XX_BOARD_CNXT_RDU_250:
702 		errCode = cx231xx_set_agc_analog_digital_mux_select(dev, 0);
703 			break;
704 		case CX231XX_BOARD_CNXT_RDE_253S:
705 		case CX231XX_BOARD_CNXT_RDU_253S:
706 		case CX231XX_BOARD_PV_PLAYTV_USB_HYBRID:
707 			errCode = cx231xx_set_agc_analog_digital_mux_select(dev, 1);
708 			break;
709 		case CX231XX_BOARD_HAUPPAUGE_EXETER:
710 		case CX231XX_BOARD_HAUPPAUGE_930C_HD_1113xx:
711 			errCode = cx231xx_set_power_mode(dev,
712 						POLARIS_AVMODE_DIGITAL);
713 			break;
714 		default:
715 			break;
716 		}
717 	} else/* Set Analog Power mode */ {
718 	/* set AGC mode to Analog */
719 		switch (dev->model) {
720 		case CX231XX_BOARD_CNXT_CARRAERA:
721 		case CX231XX_BOARD_CNXT_RDE_250:
722 		case CX231XX_BOARD_CNXT_SHELBY:
723 		case CX231XX_BOARD_CNXT_RDU_250:
724 		errCode = cx231xx_set_agc_analog_digital_mux_select(dev, 1);
725 			break;
726 		case CX231XX_BOARD_CNXT_RDE_253S:
727 		case CX231XX_BOARD_CNXT_RDU_253S:
728 		case CX231XX_BOARD_HAUPPAUGE_EXETER:
729 		case CX231XX_BOARD_HAUPPAUGE_930C_HD_1113xx:
730 		case CX231XX_BOARD_PV_PLAYTV_USB_HYBRID:
731 		case CX231XX_BOARD_HAUPPAUGE_USB2_FM_PAL:
732 		case CX231XX_BOARD_HAUPPAUGE_USB2_FM_NTSC:
733 			errCode = cx231xx_set_agc_analog_digital_mux_select(dev, 0);
734 			break;
735 		default:
736 			break;
737 		}
738 	}
739 
740 	if (errCode < 0) {
741 		dev_err(dev->dev, "Failed to set devmode to %s: error: %i",
742 			dev->mode == CX231XX_DIGITAL_MODE ? "digital" : "analog",
743 			errCode);
744 		return errCode;
745 	}
746 
747 	return 0;
748 }
749 EXPORT_SYMBOL_GPL(cx231xx_set_mode);
750 
751 int cx231xx_ep5_bulkout(struct cx231xx *dev, u8 *firmware, u16 size)
752 {
753 	int errCode = 0;
754 	int actlen = -1;
755 	int ret = -ENOMEM;
756 	u32 *buffer;
757 
758 	buffer = kzalloc(4096, GFP_KERNEL);
759 	if (buffer == NULL)
760 		return -ENOMEM;
761 	memcpy(&buffer[0], firmware, 4096);
762 
763 	ret = usb_bulk_msg(dev->udev, usb_sndbulkpipe(dev->udev, 5),
764 			buffer, 4096, &actlen, 2000);
765 
766 	if (ret)
767 		dev_err(dev->dev,
768 			"bulk message failed: %d (%d/%d)", ret,
769 			size, actlen);
770 	else {
771 		errCode = actlen != size ? -1 : 0;
772 	}
773 	kfree(buffer);
774 	return errCode;
775 }
776 
777 /*****************************************************************
778 *                URB Streaming functions                         *
779 ******************************************************************/
780 
781 /*
782  * IRQ callback, called by URB callback
783  */
784 static void cx231xx_isoc_irq_callback(struct urb *urb)
785 {
786 	struct cx231xx_dmaqueue *dma_q = urb->context;
787 	struct cx231xx_video_mode *vmode =
788 	    container_of(dma_q, struct cx231xx_video_mode, vidq);
789 	struct cx231xx *dev = container_of(vmode, struct cx231xx, video_mode);
790 	unsigned long flags;
791 	int i;
792 
793 	switch (urb->status) {
794 	case 0:		/* success */
795 	case -ETIMEDOUT:	/* NAK */
796 		break;
797 	case -ECONNRESET:	/* kill */
798 	case -ENOENT:
799 	case -ESHUTDOWN:
800 		return;
801 	default:		/* error */
802 		cx231xx_isocdbg("urb completion error %d.\n", urb->status);
803 		break;
804 	}
805 
806 	/* Copy data from URB */
807 	spin_lock_irqsave(&dev->video_mode.slock, flags);
808 	dev->video_mode.isoc_ctl.isoc_copy(dev, urb);
809 	spin_unlock_irqrestore(&dev->video_mode.slock, flags);
810 
811 	/* Reset urb buffers */
812 	for (i = 0; i < urb->number_of_packets; i++) {
813 		urb->iso_frame_desc[i].status = 0;
814 		urb->iso_frame_desc[i].actual_length = 0;
815 	}
816 
817 	urb->status = usb_submit_urb(urb, GFP_ATOMIC);
818 	if (urb->status) {
819 		cx231xx_isocdbg("urb resubmit failed (error=%i)\n",
820 				urb->status);
821 	}
822 }
823 /*****************************************************************
824 *                URB Streaming functions                         *
825 ******************************************************************/
826 
827 /*
828  * IRQ callback, called by URB callback
829  */
830 static void cx231xx_bulk_irq_callback(struct urb *urb)
831 {
832 	struct cx231xx_dmaqueue *dma_q = urb->context;
833 	struct cx231xx_video_mode *vmode =
834 	    container_of(dma_q, struct cx231xx_video_mode, vidq);
835 	struct cx231xx *dev = container_of(vmode, struct cx231xx, video_mode);
836 	unsigned long flags;
837 
838 	switch (urb->status) {
839 	case 0:		/* success */
840 	case -ETIMEDOUT:	/* NAK */
841 		break;
842 	case -ECONNRESET:	/* kill */
843 	case -ENOENT:
844 	case -ESHUTDOWN:
845 		return;
846 	case -EPIPE:		/* stall */
847 		cx231xx_isocdbg("urb completion error - device is stalled.\n");
848 		return;
849 	default:		/* error */
850 		cx231xx_isocdbg("urb completion error %d.\n", urb->status);
851 		break;
852 	}
853 
854 	/* Copy data from URB */
855 	spin_lock_irqsave(&dev->video_mode.slock, flags);
856 	dev->video_mode.bulk_ctl.bulk_copy(dev, urb);
857 	spin_unlock_irqrestore(&dev->video_mode.slock, flags);
858 
859 	/* Reset urb buffers */
860 	urb->status = usb_submit_urb(urb, GFP_ATOMIC);
861 	if (urb->status) {
862 		cx231xx_isocdbg("urb resubmit failed (error=%i)\n",
863 				urb->status);
864 	}
865 }
866 /*
867  * Stop and Deallocate URBs
868  */
869 void cx231xx_uninit_isoc(struct cx231xx *dev)
870 {
871 	struct cx231xx_dmaqueue *dma_q = &dev->video_mode.vidq;
872 	struct urb *urb;
873 	int i;
874 	bool broken_pipe = false;
875 
876 	cx231xx_isocdbg("cx231xx: called cx231xx_uninit_isoc\n");
877 
878 	dev->video_mode.isoc_ctl.nfields = -1;
879 	for (i = 0; i < dev->video_mode.isoc_ctl.num_bufs; i++) {
880 		urb = dev->video_mode.isoc_ctl.urb[i];
881 		if (urb) {
882 			if (!irqs_disabled())
883 				usb_kill_urb(urb);
884 			else
885 				usb_unlink_urb(urb);
886 
887 			if (dev->video_mode.isoc_ctl.transfer_buffer[i]) {
888 				usb_free_coherent(dev->udev,
889 						  urb->transfer_buffer_length,
890 						  dev->video_mode.isoc_ctl.
891 						  transfer_buffer[i],
892 						  urb->transfer_dma);
893 			}
894 			if (urb->status == -EPIPE) {
895 				broken_pipe = true;
896 			}
897 			usb_free_urb(urb);
898 			dev->video_mode.isoc_ctl.urb[i] = NULL;
899 		}
900 		dev->video_mode.isoc_ctl.transfer_buffer[i] = NULL;
901 	}
902 
903 	if (broken_pipe) {
904 		cx231xx_isocdbg("Reset endpoint to recover broken pipe.");
905 		usb_reset_endpoint(dev->udev, dev->video_mode.end_point_addr);
906 	}
907 	kfree(dev->video_mode.isoc_ctl.urb);
908 	kfree(dev->video_mode.isoc_ctl.transfer_buffer);
909 	kfree(dma_q->p_left_data);
910 
911 	dev->video_mode.isoc_ctl.urb = NULL;
912 	dev->video_mode.isoc_ctl.transfer_buffer = NULL;
913 	dev->video_mode.isoc_ctl.num_bufs = 0;
914 	dma_q->p_left_data = NULL;
915 
916 	if (dev->mode_tv == 0)
917 		cx231xx_capture_start(dev, 0, Raw_Video);
918 	else
919 		cx231xx_capture_start(dev, 0, TS1_serial_mode);
920 
921 
922 }
923 EXPORT_SYMBOL_GPL(cx231xx_uninit_isoc);
924 
925 /*
926  * Stop and Deallocate URBs
927  */
928 void cx231xx_uninit_bulk(struct cx231xx *dev)
929 {
930 	struct cx231xx_dmaqueue *dma_q = &dev->video_mode.vidq;
931 	struct urb *urb;
932 	int i;
933 	bool broken_pipe = false;
934 
935 	cx231xx_isocdbg("cx231xx: called cx231xx_uninit_bulk\n");
936 
937 	dev->video_mode.bulk_ctl.nfields = -1;
938 	for (i = 0; i < dev->video_mode.bulk_ctl.num_bufs; i++) {
939 		urb = dev->video_mode.bulk_ctl.urb[i];
940 		if (urb) {
941 			if (!irqs_disabled())
942 				usb_kill_urb(urb);
943 			else
944 				usb_unlink_urb(urb);
945 
946 			if (dev->video_mode.bulk_ctl.transfer_buffer[i]) {
947 				usb_free_coherent(dev->udev,
948 						urb->transfer_buffer_length,
949 						dev->video_mode.bulk_ctl.
950 						transfer_buffer[i],
951 						urb->transfer_dma);
952 			}
953 			if (urb->status == -EPIPE) {
954 				broken_pipe = true;
955 			}
956 			usb_free_urb(urb);
957 			dev->video_mode.bulk_ctl.urb[i] = NULL;
958 		}
959 		dev->video_mode.bulk_ctl.transfer_buffer[i] = NULL;
960 	}
961 
962 	if (broken_pipe) {
963 		cx231xx_isocdbg("Reset endpoint to recover broken pipe.");
964 		usb_reset_endpoint(dev->udev, dev->video_mode.end_point_addr);
965 	}
966 	kfree(dev->video_mode.bulk_ctl.urb);
967 	kfree(dev->video_mode.bulk_ctl.transfer_buffer);
968 	kfree(dma_q->p_left_data);
969 
970 	dev->video_mode.bulk_ctl.urb = NULL;
971 	dev->video_mode.bulk_ctl.transfer_buffer = NULL;
972 	dev->video_mode.bulk_ctl.num_bufs = 0;
973 	dma_q->p_left_data = NULL;
974 
975 	if (dev->mode_tv == 0)
976 		cx231xx_capture_start(dev, 0, Raw_Video);
977 	else
978 		cx231xx_capture_start(dev, 0, TS1_serial_mode);
979 
980 
981 }
982 EXPORT_SYMBOL_GPL(cx231xx_uninit_bulk);
983 
984 /*
985  * Allocate URBs and start IRQ
986  */
987 int cx231xx_init_isoc(struct cx231xx *dev, int max_packets,
988 		      int num_bufs, int max_pkt_size,
989 		      int (*isoc_copy) (struct cx231xx *dev, struct urb *urb))
990 {
991 	struct cx231xx_dmaqueue *dma_q = &dev->video_mode.vidq;
992 	int i;
993 	int sb_size, pipe;
994 	struct urb *urb;
995 	int j, k;
996 	int rc;
997 
998 	/* De-allocates all pending stuff */
999 	cx231xx_uninit_isoc(dev);
1000 
1001 	dma_q->p_left_data = kzalloc(4096, GFP_KERNEL);
1002 	if (dma_q->p_left_data == NULL)
1003 		return -ENOMEM;
1004 
1005 	dev->video_mode.isoc_ctl.isoc_copy = isoc_copy;
1006 	dev->video_mode.isoc_ctl.num_bufs = num_bufs;
1007 	dma_q->pos = 0;
1008 	dma_q->is_partial_line = 0;
1009 	dma_q->last_sav = 0;
1010 	dma_q->current_field = -1;
1011 	dma_q->field1_done = 0;
1012 	dma_q->lines_per_field = dev->height / 2;
1013 	dma_q->bytes_left_in_line = dev->width << 1;
1014 	dma_q->lines_completed = 0;
1015 	dma_q->mpeg_buffer_done = 0;
1016 	dma_q->left_data_count = 0;
1017 	dma_q->mpeg_buffer_completed = 0;
1018 	dma_q->add_ps_package_head = CX231XX_NEED_ADD_PS_PACKAGE_HEAD;
1019 	dma_q->ps_head[0] = 0x00;
1020 	dma_q->ps_head[1] = 0x00;
1021 	dma_q->ps_head[2] = 0x01;
1022 	dma_q->ps_head[3] = 0xBA;
1023 	for (i = 0; i < 8; i++)
1024 		dma_q->partial_buf[i] = 0;
1025 
1026 	dev->video_mode.isoc_ctl.urb =
1027 	    kcalloc(num_bufs, sizeof(void *), GFP_KERNEL);
1028 	if (!dev->video_mode.isoc_ctl.urb) {
1029 		dev_err(dev->dev,
1030 			"cannot alloc memory for usb buffers\n");
1031 		return -ENOMEM;
1032 	}
1033 
1034 	dev->video_mode.isoc_ctl.transfer_buffer =
1035 	    kcalloc(num_bufs, sizeof(void *), GFP_KERNEL);
1036 	if (!dev->video_mode.isoc_ctl.transfer_buffer) {
1037 		dev_err(dev->dev,
1038 			"cannot allocate memory for usbtransfer\n");
1039 		kfree(dev->video_mode.isoc_ctl.urb);
1040 		return -ENOMEM;
1041 	}
1042 
1043 	dev->video_mode.isoc_ctl.max_pkt_size = max_pkt_size;
1044 	dev->video_mode.isoc_ctl.buf = NULL;
1045 
1046 	sb_size = max_packets * dev->video_mode.isoc_ctl.max_pkt_size;
1047 
1048 	if (dev->mode_tv == 1)
1049 		dev->video_mode.end_point_addr = 0x81;
1050 	else
1051 		dev->video_mode.end_point_addr = 0x84;
1052 
1053 
1054 	/* allocate urbs and transfer buffers */
1055 	for (i = 0; i < dev->video_mode.isoc_ctl.num_bufs; i++) {
1056 		urb = usb_alloc_urb(max_packets, GFP_KERNEL);
1057 		if (!urb) {
1058 			cx231xx_uninit_isoc(dev);
1059 			return -ENOMEM;
1060 		}
1061 		dev->video_mode.isoc_ctl.urb[i] = urb;
1062 
1063 		dev->video_mode.isoc_ctl.transfer_buffer[i] =
1064 		    usb_alloc_coherent(dev->udev, sb_size, GFP_KERNEL,
1065 				       &urb->transfer_dma);
1066 		if (!dev->video_mode.isoc_ctl.transfer_buffer[i]) {
1067 			dev_err(dev->dev,
1068 				"unable to allocate %i bytes for transfer buffer %i%s\n",
1069 				sb_size, i,
1070 				in_interrupt() ? " while in int" : "");
1071 			cx231xx_uninit_isoc(dev);
1072 			return -ENOMEM;
1073 		}
1074 		memset(dev->video_mode.isoc_ctl.transfer_buffer[i], 0, sb_size);
1075 
1076 		pipe =
1077 		    usb_rcvisocpipe(dev->udev, dev->video_mode.end_point_addr);
1078 
1079 		usb_fill_int_urb(urb, dev->udev, pipe,
1080 				 dev->video_mode.isoc_ctl.transfer_buffer[i],
1081 				 sb_size, cx231xx_isoc_irq_callback, dma_q, 1);
1082 
1083 		urb->number_of_packets = max_packets;
1084 		urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
1085 
1086 		k = 0;
1087 		for (j = 0; j < max_packets; j++) {
1088 			urb->iso_frame_desc[j].offset = k;
1089 			urb->iso_frame_desc[j].length =
1090 			    dev->video_mode.isoc_ctl.max_pkt_size;
1091 			k += dev->video_mode.isoc_ctl.max_pkt_size;
1092 		}
1093 	}
1094 
1095 	init_waitqueue_head(&dma_q->wq);
1096 
1097 	/* submit urbs and enables IRQ */
1098 	for (i = 0; i < dev->video_mode.isoc_ctl.num_bufs; i++) {
1099 		rc = usb_submit_urb(dev->video_mode.isoc_ctl.urb[i],
1100 				    GFP_ATOMIC);
1101 		if (rc) {
1102 			dev_err(dev->dev,
1103 				"submit of urb %i failed (error=%i)\n", i,
1104 				rc);
1105 			cx231xx_uninit_isoc(dev);
1106 			return rc;
1107 		}
1108 	}
1109 
1110 	if (dev->mode_tv == 0)
1111 		cx231xx_capture_start(dev, 1, Raw_Video);
1112 	else
1113 		cx231xx_capture_start(dev, 1, TS1_serial_mode);
1114 
1115 	return 0;
1116 }
1117 EXPORT_SYMBOL_GPL(cx231xx_init_isoc);
1118 
1119 /*
1120  * Allocate URBs and start IRQ
1121  */
1122 int cx231xx_init_bulk(struct cx231xx *dev, int max_packets,
1123 		      int num_bufs, int max_pkt_size,
1124 		      int (*bulk_copy) (struct cx231xx *dev, struct urb *urb))
1125 {
1126 	struct cx231xx_dmaqueue *dma_q = &dev->video_mode.vidq;
1127 	int i;
1128 	int sb_size, pipe;
1129 	struct urb *urb;
1130 	int rc;
1131 
1132 	dev->video_input = dev->video_input > 2 ? 2 : dev->video_input;
1133 
1134 	cx231xx_coredbg("Setting Video mux to %d\n", dev->video_input);
1135 
1136 	video_mux(dev, dev->video_input);
1137 
1138 	/* De-allocates all pending stuff */
1139 	cx231xx_uninit_bulk(dev);
1140 
1141 	dev->video_mode.bulk_ctl.bulk_copy = bulk_copy;
1142 	dev->video_mode.bulk_ctl.num_bufs = num_bufs;
1143 	dma_q->pos = 0;
1144 	dma_q->is_partial_line = 0;
1145 	dma_q->last_sav = 0;
1146 	dma_q->current_field = -1;
1147 	dma_q->field1_done = 0;
1148 	dma_q->lines_per_field = dev->height / 2;
1149 	dma_q->bytes_left_in_line = dev->width << 1;
1150 	dma_q->lines_completed = 0;
1151 	dma_q->mpeg_buffer_done = 0;
1152 	dma_q->left_data_count = 0;
1153 	dma_q->mpeg_buffer_completed = 0;
1154 	dma_q->ps_head[0] = 0x00;
1155 	dma_q->ps_head[1] = 0x00;
1156 	dma_q->ps_head[2] = 0x01;
1157 	dma_q->ps_head[3] = 0xBA;
1158 	for (i = 0; i < 8; i++)
1159 		dma_q->partial_buf[i] = 0;
1160 
1161 	dev->video_mode.bulk_ctl.urb =
1162 	    kcalloc(num_bufs, sizeof(void *), GFP_KERNEL);
1163 	if (!dev->video_mode.bulk_ctl.urb) {
1164 		dev_err(dev->dev,
1165 			"cannot alloc memory for usb buffers\n");
1166 		return -ENOMEM;
1167 	}
1168 
1169 	dev->video_mode.bulk_ctl.transfer_buffer =
1170 	    kcalloc(num_bufs, sizeof(void *), GFP_KERNEL);
1171 	if (!dev->video_mode.bulk_ctl.transfer_buffer) {
1172 		dev_err(dev->dev,
1173 			"cannot allocate memory for usbtransfer\n");
1174 		kfree(dev->video_mode.bulk_ctl.urb);
1175 		return -ENOMEM;
1176 	}
1177 
1178 	dev->video_mode.bulk_ctl.max_pkt_size = max_pkt_size;
1179 	dev->video_mode.bulk_ctl.buf = NULL;
1180 
1181 	sb_size = max_packets * dev->video_mode.bulk_ctl.max_pkt_size;
1182 
1183 	if (dev->mode_tv == 1)
1184 		dev->video_mode.end_point_addr = 0x81;
1185 	else
1186 		dev->video_mode.end_point_addr = 0x84;
1187 
1188 
1189 	/* allocate urbs and transfer buffers */
1190 	for (i = 0; i < dev->video_mode.bulk_ctl.num_bufs; i++) {
1191 		urb = usb_alloc_urb(0, GFP_KERNEL);
1192 		if (!urb) {
1193 			cx231xx_uninit_bulk(dev);
1194 			return -ENOMEM;
1195 		}
1196 		dev->video_mode.bulk_ctl.urb[i] = urb;
1197 		urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
1198 
1199 		dev->video_mode.bulk_ctl.transfer_buffer[i] =
1200 		    usb_alloc_coherent(dev->udev, sb_size, GFP_KERNEL,
1201 				     &urb->transfer_dma);
1202 		if (!dev->video_mode.bulk_ctl.transfer_buffer[i]) {
1203 			dev_err(dev->dev,
1204 				"unable to allocate %i bytes for transfer buffer %i%s\n",
1205 				sb_size, i,
1206 				in_interrupt() ? " while in int" : "");
1207 			cx231xx_uninit_bulk(dev);
1208 			return -ENOMEM;
1209 		}
1210 		memset(dev->video_mode.bulk_ctl.transfer_buffer[i], 0, sb_size);
1211 
1212 		pipe = usb_rcvbulkpipe(dev->udev,
1213 				 dev->video_mode.end_point_addr);
1214 		usb_fill_bulk_urb(urb, dev->udev, pipe,
1215 				  dev->video_mode.bulk_ctl.transfer_buffer[i],
1216 				  sb_size, cx231xx_bulk_irq_callback, dma_q);
1217 	}
1218 
1219 	/* clear halt */
1220 	rc = usb_clear_halt(dev->udev, dev->video_mode.bulk_ctl.urb[0]->pipe);
1221 	if (rc < 0) {
1222 		dev_err(dev->dev,
1223 			"failed to clear USB bulk endpoint stall/halt condition (error=%i)\n",
1224 			rc);
1225 		cx231xx_uninit_bulk(dev);
1226 		return rc;
1227 	}
1228 
1229 	init_waitqueue_head(&dma_q->wq);
1230 
1231 	/* submit urbs and enables IRQ */
1232 	for (i = 0; i < dev->video_mode.bulk_ctl.num_bufs; i++) {
1233 		rc = usb_submit_urb(dev->video_mode.bulk_ctl.urb[i],
1234 				    GFP_ATOMIC);
1235 		if (rc) {
1236 			dev_err(dev->dev,
1237 				"submit of urb %i failed (error=%i)\n", i, rc);
1238 			cx231xx_uninit_bulk(dev);
1239 			return rc;
1240 		}
1241 	}
1242 
1243 	if (dev->mode_tv == 0)
1244 		cx231xx_capture_start(dev, 1, Raw_Video);
1245 	else
1246 		cx231xx_capture_start(dev, 1, TS1_serial_mode);
1247 
1248 	return 0;
1249 }
1250 EXPORT_SYMBOL_GPL(cx231xx_init_bulk);
1251 void cx231xx_stop_TS1(struct cx231xx *dev)
1252 {
1253 	u8 val[4] = { 0, 0, 0, 0 };
1254 
1255 	val[0] = 0x00;
1256 	val[1] = 0x03;
1257 	val[2] = 0x00;
1258 	val[3] = 0x00;
1259 	cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
1260 			TS_MODE_REG, val, 4);
1261 
1262 	val[0] = 0x00;
1263 	val[1] = 0x70;
1264 	val[2] = 0x04;
1265 	val[3] = 0x00;
1266 	cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
1267 			TS1_CFG_REG, val, 4);
1268 }
1269 /* EXPORT_SYMBOL_GPL(cx231xx_stop_TS1); */
1270 void cx231xx_start_TS1(struct cx231xx *dev)
1271 {
1272 	u8 val[4] = { 0, 0, 0, 0 };
1273 
1274 	val[0] = 0x03;
1275 	val[1] = 0x03;
1276 	val[2] = 0x00;
1277 	val[3] = 0x00;
1278 	cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
1279 			TS_MODE_REG, val, 4);
1280 
1281 	val[0] = 0x04;
1282 	val[1] = 0xA3;
1283 	val[2] = 0x3B;
1284 	val[3] = 0x00;
1285 	cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
1286 			TS1_CFG_REG, val, 4);
1287 }
1288 /* EXPORT_SYMBOL_GPL(cx231xx_start_TS1); */
1289 /*****************************************************************
1290 *             Device Init/UnInit functions                       *
1291 ******************************************************************/
1292 int cx231xx_dev_init(struct cx231xx *dev)
1293 {
1294 	int errCode = 0;
1295 
1296 	/* Initialize I2C bus */
1297 
1298 	/* External Master 1 Bus */
1299 	dev->i2c_bus[0].nr = 0;
1300 	dev->i2c_bus[0].dev = dev;
1301 	dev->i2c_bus[0].i2c_period = I2C_SPEED_100K;	/* 100 KHz */
1302 	dev->i2c_bus[0].i2c_nostop = 0;
1303 	dev->i2c_bus[0].i2c_reserve = 0;
1304 	dev->i2c_bus[0].i2c_rc = -ENODEV;
1305 
1306 	/* External Master 2 Bus */
1307 	dev->i2c_bus[1].nr = 1;
1308 	dev->i2c_bus[1].dev = dev;
1309 	dev->i2c_bus[1].i2c_period = I2C_SPEED_100K;	/* 100 KHz */
1310 	dev->i2c_bus[1].i2c_nostop = 0;
1311 	dev->i2c_bus[1].i2c_reserve = 0;
1312 	dev->i2c_bus[1].i2c_rc = -ENODEV;
1313 
1314 	/* Internal Master 3 Bus */
1315 	dev->i2c_bus[2].nr = 2;
1316 	dev->i2c_bus[2].dev = dev;
1317 	dev->i2c_bus[2].i2c_period = I2C_SPEED_100K;	/* 100kHz */
1318 	dev->i2c_bus[2].i2c_nostop = 0;
1319 	dev->i2c_bus[2].i2c_reserve = 0;
1320 	dev->i2c_bus[2].i2c_rc = -ENODEV;
1321 
1322 	/* register I2C buses */
1323 	errCode = cx231xx_i2c_register(&dev->i2c_bus[0]);
1324 	if (errCode < 0)
1325 		return errCode;
1326 	errCode = cx231xx_i2c_register(&dev->i2c_bus[1]);
1327 	if (errCode < 0)
1328 		return errCode;
1329 	errCode = cx231xx_i2c_register(&dev->i2c_bus[2]);
1330 	if (errCode < 0)
1331 		return errCode;
1332 
1333 	errCode = cx231xx_i2c_mux_create(dev);
1334 	if (errCode < 0) {
1335 		dev_err(dev->dev,
1336 			"%s: Failed to create I2C mux\n", __func__);
1337 		return errCode;
1338 	}
1339 	errCode = cx231xx_i2c_mux_register(dev, 0);
1340 	if (errCode < 0)
1341 		return errCode;
1342 
1343 	errCode = cx231xx_i2c_mux_register(dev, 1);
1344 	if (errCode < 0)
1345 		return errCode;
1346 
1347 	/* scan the real bus segments in the order of physical port numbers */
1348 	cx231xx_do_i2c_scan(dev, I2C_0);
1349 	cx231xx_do_i2c_scan(dev, I2C_1_MUX_1);
1350 	cx231xx_do_i2c_scan(dev, I2C_2);
1351 	cx231xx_do_i2c_scan(dev, I2C_1_MUX_3);
1352 
1353 	/* init hardware */
1354 	/* Note : with out calling set power mode function,
1355 	afe can not be set up correctly */
1356 	if (dev->board.external_av) {
1357 		errCode = cx231xx_set_power_mode(dev,
1358 				 POLARIS_AVMODE_ENXTERNAL_AV);
1359 		if (errCode < 0) {
1360 			dev_err(dev->dev,
1361 				"%s: Failed to set Power - errCode [%d]!\n",
1362 				__func__, errCode);
1363 			return errCode;
1364 		}
1365 	} else {
1366 		errCode = cx231xx_set_power_mode(dev,
1367 				 POLARIS_AVMODE_ANALOGT_TV);
1368 		if (errCode < 0) {
1369 			dev_err(dev->dev,
1370 				"%s: Failed to set Power - errCode [%d]!\n",
1371 				__func__, errCode);
1372 			return errCode;
1373 		}
1374 	}
1375 
1376 	/* reset the Tuner, if it is a Xceive tuner */
1377 	if ((dev->board.tuner_type == TUNER_XC5000) ||
1378 	    (dev->board.tuner_type == TUNER_XC2028))
1379 			cx231xx_gpio_set(dev, dev->board.tuner_gpio);
1380 
1381 	/* initialize Colibri block */
1382 	errCode = cx231xx_afe_init_super_block(dev, 0x23c);
1383 	if (errCode < 0) {
1384 		dev_err(dev->dev,
1385 			"%s: cx231xx_afe init super block - errCode [%d]!\n",
1386 			__func__, errCode);
1387 		return errCode;
1388 	}
1389 	errCode = cx231xx_afe_init_channels(dev);
1390 	if (errCode < 0) {
1391 		dev_err(dev->dev,
1392 			"%s: cx231xx_afe init channels - errCode [%d]!\n",
1393 			__func__, errCode);
1394 		return errCode;
1395 	}
1396 
1397 	/* Set DIF in By pass mode */
1398 	errCode = cx231xx_dif_set_standard(dev, DIF_USE_BASEBAND);
1399 	if (errCode < 0) {
1400 		dev_err(dev->dev,
1401 			"%s: cx231xx_dif set to By pass mode - errCode [%d]!\n",
1402 			__func__, errCode);
1403 		return errCode;
1404 	}
1405 
1406 	/* I2S block related functions */
1407 	errCode = cx231xx_i2s_blk_initialize(dev);
1408 	if (errCode < 0) {
1409 		dev_err(dev->dev,
1410 			"%s: cx231xx_i2s block initialize - errCode [%d]!\n",
1411 			__func__, errCode);
1412 		return errCode;
1413 	}
1414 
1415 	/* init control pins */
1416 	errCode = cx231xx_init_ctrl_pin_status(dev);
1417 	if (errCode < 0) {
1418 		dev_err(dev->dev,
1419 			"%s: cx231xx_init ctrl pins - errCode [%d]!\n",
1420 			__func__, errCode);
1421 		return errCode;
1422 	}
1423 
1424 	/* set AGC mode to Analog */
1425 	switch (dev->model) {
1426 	case CX231XX_BOARD_CNXT_CARRAERA:
1427 	case CX231XX_BOARD_CNXT_RDE_250:
1428 	case CX231XX_BOARD_CNXT_SHELBY:
1429 	case CX231XX_BOARD_CNXT_RDU_250:
1430 	errCode = cx231xx_set_agc_analog_digital_mux_select(dev, 1);
1431 		break;
1432 	case CX231XX_BOARD_CNXT_RDE_253S:
1433 	case CX231XX_BOARD_CNXT_RDU_253S:
1434 	case CX231XX_BOARD_HAUPPAUGE_EXETER:
1435 	case CX231XX_BOARD_HAUPPAUGE_930C_HD_1113xx:
1436 	case CX231XX_BOARD_PV_PLAYTV_USB_HYBRID:
1437 	case CX231XX_BOARD_HAUPPAUGE_USB2_FM_PAL:
1438 	case CX231XX_BOARD_HAUPPAUGE_USB2_FM_NTSC:
1439 	errCode = cx231xx_set_agc_analog_digital_mux_select(dev, 0);
1440 		break;
1441 	default:
1442 		break;
1443 	}
1444 	if (errCode < 0) {
1445 		dev_err(dev->dev,
1446 			"%s: cx231xx_AGC mode to Analog - errCode [%d]!\n",
1447 			__func__, errCode);
1448 		return errCode;
1449 	}
1450 
1451 	/* set all alternate settings to zero initially */
1452 	cx231xx_set_alt_setting(dev, INDEX_VIDEO, 0);
1453 	cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
1454 	cx231xx_set_alt_setting(dev, INDEX_HANC, 0);
1455 	if (dev->board.has_dvb)
1456 		cx231xx_set_alt_setting(dev, INDEX_TS1, 0);
1457 
1458 	errCode = 0;
1459 	return errCode;
1460 }
1461 EXPORT_SYMBOL_GPL(cx231xx_dev_init);
1462 
1463 void cx231xx_dev_uninit(struct cx231xx *dev)
1464 {
1465 	/* Un Initialize I2C bus */
1466 	cx231xx_i2c_mux_unregister(dev);
1467 	cx231xx_i2c_unregister(&dev->i2c_bus[2]);
1468 	cx231xx_i2c_unregister(&dev->i2c_bus[1]);
1469 	cx231xx_i2c_unregister(&dev->i2c_bus[0]);
1470 }
1471 EXPORT_SYMBOL_GPL(cx231xx_dev_uninit);
1472 
1473 /*****************************************************************
1474 *              G P I O related functions                         *
1475 ******************************************************************/
1476 int cx231xx_send_gpio_cmd(struct cx231xx *dev, u32 gpio_bit, u8 *gpio_val,
1477 			  u8 len, u8 request, u8 direction)
1478 {
1479 	int status = 0;
1480 	struct VENDOR_REQUEST_IN ven_req;
1481 
1482 	/* Set wValue */
1483 	ven_req.wValue = (u16) (gpio_bit >> 16 & 0xffff);
1484 
1485 	/* set request */
1486 	if (!request) {
1487 		if (direction)
1488 			ven_req.bRequest = VRT_GET_GPIO;	/* 0x9 gpio */
1489 		else
1490 			ven_req.bRequest = VRT_SET_GPIO;	/* 0x8 gpio */
1491 	} else {
1492 		if (direction)
1493 			ven_req.bRequest = VRT_GET_GPIE;	/* 0xb gpie */
1494 		else
1495 			ven_req.bRequest = VRT_SET_GPIE;	/* 0xa gpie */
1496 	}
1497 
1498 	/* set index value */
1499 	ven_req.wIndex = (u16) (gpio_bit & 0xffff);
1500 
1501 	/* set wLength value */
1502 	ven_req.wLength = len;
1503 
1504 	/* set bData value */
1505 	ven_req.bData = 0;
1506 
1507 	/* set the buffer for read / write */
1508 	ven_req.pBuff = gpio_val;
1509 
1510 	/* set the direction */
1511 	if (direction) {
1512 		ven_req.direction = USB_DIR_IN;
1513 		memset(ven_req.pBuff, 0x00, ven_req.wLength);
1514 	} else
1515 		ven_req.direction = USB_DIR_OUT;
1516 
1517 
1518 	/* call common vendor command request */
1519 	status = cx231xx_send_vendor_cmd(dev, &ven_req);
1520 	if (status < 0) {
1521 		dev_err(dev->dev, "%s: failed with status -%d\n",
1522 			__func__, status);
1523 	}
1524 
1525 	return status;
1526 }
1527 EXPORT_SYMBOL_GPL(cx231xx_send_gpio_cmd);
1528 
1529 /*****************************************************************
1530  *    C O N T R O L - Register R E A D / W R I T E functions     *
1531  *****************************************************************/
1532 int cx231xx_mode_register(struct cx231xx *dev, u16 address, u32 mode)
1533 {
1534 	u8 value[4] = { 0x0, 0x0, 0x0, 0x0 };
1535 	u32 tmp = 0;
1536 	int status = 0;
1537 
1538 	status =
1539 	    cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, address, value, 4);
1540 	if (status < 0)
1541 		return status;
1542 
1543 	tmp = le32_to_cpu(*((__le32 *) value));
1544 	tmp |= mode;
1545 
1546 	value[0] = (u8) tmp;
1547 	value[1] = (u8) (tmp >> 8);
1548 	value[2] = (u8) (tmp >> 16);
1549 	value[3] = (u8) (tmp >> 24);
1550 
1551 	status =
1552 	    cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, address, value, 4);
1553 
1554 	return status;
1555 }
1556 
1557 /*****************************************************************
1558  *            I 2 C Internal C O N T R O L   functions           *
1559  *****************************************************************/
1560 int cx231xx_read_i2c_master(struct cx231xx *dev, u8 dev_addr, u16 saddr,
1561 			  u8 saddr_len, u32 *data, u8 data_len, int master)
1562 {
1563 	int status = 0;
1564 	struct cx231xx_i2c_xfer_data req_data;
1565 	u8 value[64] = "0";
1566 
1567 	if (saddr_len == 0)
1568 		saddr = 0;
1569 	else if (saddr_len == 1)
1570 		saddr &= 0xff;
1571 
1572 	/* prepare xfer_data struct */
1573 	req_data.dev_addr = dev_addr >> 1;
1574 	req_data.direction = I2C_M_RD;
1575 	req_data.saddr_len = saddr_len;
1576 	req_data.saddr_dat = saddr;
1577 	req_data.buf_size = data_len;
1578 	req_data.p_buffer = (u8 *) value;
1579 
1580 	/* usb send command */
1581 	if (master == 0)
1582 		status = dev->cx231xx_send_usb_command(&dev->i2c_bus[0],
1583 					 &req_data);
1584 	else if (master == 1)
1585 		status = dev->cx231xx_send_usb_command(&dev->i2c_bus[1],
1586 					 &req_data);
1587 	else if (master == 2)
1588 		status = dev->cx231xx_send_usb_command(&dev->i2c_bus[2],
1589 					 &req_data);
1590 
1591 	if (status >= 0) {
1592 		/* Copy the data read back to main buffer */
1593 		if (data_len == 1)
1594 			*data = value[0];
1595 		else if (data_len == 4)
1596 			*data =
1597 			    value[0] | value[1] << 8 | value[2] << 16 | value[3]
1598 			    << 24;
1599 		else if (data_len > 4)
1600 			*data = value[saddr];
1601 	}
1602 
1603 	return status;
1604 }
1605 
1606 int cx231xx_write_i2c_master(struct cx231xx *dev, u8 dev_addr, u16 saddr,
1607 			   u8 saddr_len, u32 data, u8 data_len, int master)
1608 {
1609 	int status = 0;
1610 	u8 value[4] = { 0, 0, 0, 0 };
1611 	struct cx231xx_i2c_xfer_data req_data;
1612 
1613 	value[0] = (u8) data;
1614 	value[1] = (u8) (data >> 8);
1615 	value[2] = (u8) (data >> 16);
1616 	value[3] = (u8) (data >> 24);
1617 
1618 	if (saddr_len == 0)
1619 		saddr = 0;
1620 	else if (saddr_len == 1)
1621 		saddr &= 0xff;
1622 
1623 	/* prepare xfer_data struct */
1624 	req_data.dev_addr = dev_addr >> 1;
1625 	req_data.direction = 0;
1626 	req_data.saddr_len = saddr_len;
1627 	req_data.saddr_dat = saddr;
1628 	req_data.buf_size = data_len;
1629 	req_data.p_buffer = value;
1630 
1631 	/* usb send command */
1632 	if (master == 0)
1633 		status = dev->cx231xx_send_usb_command(&dev->i2c_bus[0],
1634 				 &req_data);
1635 	else if (master == 1)
1636 		status = dev->cx231xx_send_usb_command(&dev->i2c_bus[1],
1637 				 &req_data);
1638 	else if (master == 2)
1639 		status = dev->cx231xx_send_usb_command(&dev->i2c_bus[2],
1640 				 &req_data);
1641 
1642 	return status;
1643 }
1644 
1645 int cx231xx_read_i2c_data(struct cx231xx *dev, u8 dev_addr, u16 saddr,
1646 			  u8 saddr_len, u32 *data, u8 data_len)
1647 {
1648 	int status = 0;
1649 	struct cx231xx_i2c_xfer_data req_data;
1650 	u8 value[4] = { 0, 0, 0, 0 };
1651 
1652 	if (saddr_len == 0)
1653 		saddr = 0;
1654 	else if (saddr_len == 1)
1655 		saddr &= 0xff;
1656 
1657 	/* prepare xfer_data struct */
1658 	req_data.dev_addr = dev_addr >> 1;
1659 	req_data.direction = I2C_M_RD;
1660 	req_data.saddr_len = saddr_len;
1661 	req_data.saddr_dat = saddr;
1662 	req_data.buf_size = data_len;
1663 	req_data.p_buffer = (u8 *) value;
1664 
1665 	/* usb send command */
1666 	status = dev->cx231xx_send_usb_command(&dev->i2c_bus[0], &req_data);
1667 
1668 	if (status >= 0) {
1669 		/* Copy the data read back to main buffer */
1670 		if (data_len == 1)
1671 			*data = value[0];
1672 		else
1673 			*data =
1674 			    value[0] | value[1] << 8 | value[2] << 16 | value[3]
1675 			    << 24;
1676 	}
1677 
1678 	return status;
1679 }
1680 
1681 int cx231xx_write_i2c_data(struct cx231xx *dev, u8 dev_addr, u16 saddr,
1682 			   u8 saddr_len, u32 data, u8 data_len)
1683 {
1684 	int status = 0;
1685 	u8 value[4] = { 0, 0, 0, 0 };
1686 	struct cx231xx_i2c_xfer_data req_data;
1687 
1688 	value[0] = (u8) data;
1689 	value[1] = (u8) (data >> 8);
1690 	value[2] = (u8) (data >> 16);
1691 	value[3] = (u8) (data >> 24);
1692 
1693 	if (saddr_len == 0)
1694 		saddr = 0;
1695 	else if (saddr_len == 1)
1696 		saddr &= 0xff;
1697 
1698 	/* prepare xfer_data struct */
1699 	req_data.dev_addr = dev_addr >> 1;
1700 	req_data.direction = 0;
1701 	req_data.saddr_len = saddr_len;
1702 	req_data.saddr_dat = saddr;
1703 	req_data.buf_size = data_len;
1704 	req_data.p_buffer = value;
1705 
1706 	/* usb send command */
1707 	status = dev->cx231xx_send_usb_command(&dev->i2c_bus[0], &req_data);
1708 
1709 	return status;
1710 }
1711 
1712 int cx231xx_reg_mask_write(struct cx231xx *dev, u8 dev_addr, u8 size,
1713 			   u16 register_address, u8 bit_start, u8 bit_end,
1714 			   u32 value)
1715 {
1716 	int status = 0;
1717 	u32 tmp;
1718 	u32 mask = 0;
1719 	int i;
1720 
1721 	if (bit_start > (size - 1) || bit_end > (size - 1))
1722 		return -1;
1723 
1724 	if (size == 8) {
1725 		status =
1726 		    cx231xx_read_i2c_data(dev, dev_addr, register_address, 2,
1727 					  &tmp, 1);
1728 	} else {
1729 		status =
1730 		    cx231xx_read_i2c_data(dev, dev_addr, register_address, 2,
1731 					  &tmp, 4);
1732 	}
1733 
1734 	if (status < 0)
1735 		return status;
1736 
1737 	mask = 1 << bit_end;
1738 	for (i = bit_end; i > bit_start && i > 0; i--)
1739 		mask = mask + (1 << (i - 1));
1740 
1741 	value <<= bit_start;
1742 
1743 	if (size == 8) {
1744 		tmp &= ~mask;
1745 		tmp |= value;
1746 		tmp &= 0xff;
1747 		status =
1748 		    cx231xx_write_i2c_data(dev, dev_addr, register_address, 2,
1749 					   tmp, 1);
1750 	} else {
1751 		tmp &= ~mask;
1752 		tmp |= value;
1753 		status =
1754 		    cx231xx_write_i2c_data(dev, dev_addr, register_address, 2,
1755 					   tmp, 4);
1756 	}
1757 
1758 	return status;
1759 }
1760 
1761 int cx231xx_read_modify_write_i2c_dword(struct cx231xx *dev, u8 dev_addr,
1762 					u16 saddr, u32 mask, u32 value)
1763 {
1764 	u32 temp;
1765 	int status = 0;
1766 
1767 	status = cx231xx_read_i2c_data(dev, dev_addr, saddr, 2, &temp, 4);
1768 
1769 	if (status < 0)
1770 		return status;
1771 
1772 	temp &= ~mask;
1773 	temp |= value;
1774 
1775 	status = cx231xx_write_i2c_data(dev, dev_addr, saddr, 2, temp, 4);
1776 
1777 	return status;
1778 }
1779 
1780 u32 cx231xx_set_field(u32 field_mask, u32 data)
1781 {
1782 	u32 temp;
1783 
1784 	for (temp = field_mask; (temp & 1) == 0; temp >>= 1)
1785 		data <<= 1;
1786 
1787 	return data;
1788 }
1789