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