1	// SPDX-License-Identifier: GPL-2.0-or-later
2	/*
3	* Auvitek AU0828 USB Bridge (Analog video support)
4	*
5	* Copyright (C) 2009 Devin Heitmueller <dheitmueller@linuxtv.org>
6	* Copyright (C) 2005-2008 Auvitek International, Ltd.
7	*/
8
9	/* Developer Notes:
10	*
11	* The hardware scaler supported is unimplemented
12	* AC97 audio support is unimplemented (only i2s audio mode)
13	*
14	*/
15
16	#include "au0828.h"
17	#include "au8522.h"
18
19	#include <linux/module.h>
20	#include <linux/slab.h>
21	#include <linux/init.h>
22	#include <linux/device.h>
23	#include <media/v4l2-common.h>
24	#include <media/v4l2-mc.h>
25	#include <media/v4l2-ioctl.h>
26	#include <media/v4l2-event.h>
27	#include <media/tuner.h>
28	#include "au0828-reg.h"
29
30	static DEFINE_MUTEX(au0828_sysfs_lock);
31
32	/* ------------------------------------------------------------------
33	Videobuf operations
34	------------------------------------------------------------------*/
35
36	static unsigned int isoc_debug;
37	module_param(isoc_debug, int, 0644);
38	MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
39
40	#define au0828_isocdbg(fmt, arg...) \
41	do {\
42	if (isoc_debug) { \
43	pr_info("au0828 %s :"fmt, \
44	__func__ , ##arg); \
45	} \
46	} while (0)
47
48	static inline void i2c_gate_ctrl(struct au0828_dev *dev, int val)
49	{
50	if (dev->dvb.frontend && dev->dvb.frontend->ops.analog_ops.i2c_gate_ctrl)
51	dev->dvb.frontend->ops.analog_ops.i2c_gate_ctrl(dev->dvb.frontend, val);
52	}
53
54	static inline void print_err_status(struct au0828_dev *dev,
55	int packet, int status)
56	{
57	char *errmsg = "Unknown";
58
59	switch (status) {
60	case -ENOENT:
61	errmsg = "unlinked synchronously";
62	break;
63	case -ECONNRESET:
64	errmsg = "unlinked asynchronously";
65	break;
66	case -ENOSR:
67	errmsg = "Buffer error (overrun)";
68	break;
69	case -EPIPE:
70	errmsg = "Stalled (device not responding)";
71	break;
72	case -EOVERFLOW:
73	errmsg = "Babble (bad cable?)";
74	break;
75	case -EPROTO:
76	errmsg = "Bit-stuff error (bad cable?)";
77	break;
78	case -EILSEQ:
79	errmsg = "CRC/Timeout (could be anything)";
80	break;
81	case -ETIME:
82	errmsg = "Device does not respond";
83	break;
84	}
85	if (packet < 0) {
86	au0828_isocdbg("URB status %d [%s].\n", status, errmsg);
87	} else {
88	au0828_isocdbg("URB packet %d, status %d [%s].\n",
89	packet, status, errmsg);
90	}
91	}
92
93	static int check_dev(struct au0828_dev *dev)
94	{
95	if (test_bit(DEV_DISCONNECTED, &dev->dev_state)) {
96	pr_info("v4l2 ioctl: device not present\n");
97	return -ENODEV;
98	}
99
100	if (test_bit(DEV_MISCONFIGURED, &dev->dev_state)) {
101	pr_info("v4l2 ioctl: device is misconfigured; close and open it again\n");
102	return -EIO;
103	}
104	return 0;
105	}
106
107	/*
108	* IRQ callback, called by URB callback
109	*/
110	static void au0828_irq_callback(struct urb *urb)
111	{
112	struct au0828_dmaqueue *dma_q = urb->context;
113	struct au0828_dev *dev = container_of(dma_q, struct au0828_dev, vidq);
114	unsigned long flags = 0;
115	int i;
116
117	switch (urb->status) {
118	case 0: /* success */
119	case -ETIMEDOUT: /* NAK */
120	break;
121	case -ECONNRESET: /* kill */
122	case -ENOENT:
123	case -ESHUTDOWN:
124	au0828_isocdbg("au0828_irq_callback called: status kill\n");
125	return;
126	default: /* unknown error */
127	au0828_isocdbg("urb completion error %d.\n", urb->status);
128	break;
129	}
130
131	/* Copy data from URB */
132	spin_lock_irqsave(&dev->slock, flags);
133	dev->isoc_ctl.isoc_copy(dev, urb);
134	spin_unlock_irqrestore(lock: &dev->slock, flags);
135
136	/* Reset urb buffers */
137	for (i = 0; i < urb->number_of_packets; i++) {
138	urb->iso_frame_desc[i].status = 0;
139	urb->iso_frame_desc[i].actual_length = 0;
140	}
141	urb->status = 0;
142
143	urb->status = usb_submit_urb(urb, GFP_ATOMIC);
144	if (urb->status) {
145	au0828_isocdbg("urb resubmit failed (error=%i)\n",
146	urb->status);
147	}
148	dev->stream_state = STREAM_ON;
149	}
150
151	/*
152	* Stop and Deallocate URBs
153	*/
154	static void au0828_uninit_isoc(struct au0828_dev *dev)
155	{
156	struct urb *urb;
157	int i;
158
159	au0828_isocdbg("au0828: called au0828_uninit_isoc\n");
160
161	dev->isoc_ctl.nfields = -1;
162	for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
163	urb = dev->isoc_ctl.urb[i];
164	if (urb) {
165	if (!irqs_disabled())
166	usb_kill_urb(urb);
167	else
168	usb_unlink_urb(urb);
169
170	if (dev->isoc_ctl.transfer_buffer[i]) {
171	usb_free_coherent(dev: dev->usbdev,
172	size: urb->transfer_buffer_length,
173	addr: dev->isoc_ctl.transfer_buffer[i],
174	dma: urb->transfer_dma);
175	}
176	usb_free_urb(urb);
177	dev->isoc_ctl.urb[i] = NULL;
178	}
179	dev->isoc_ctl.transfer_buffer[i] = NULL;
180	}
181
182	kfree(objp: dev->isoc_ctl.urb);
183	kfree(objp: dev->isoc_ctl.transfer_buffer);
184
185	dev->isoc_ctl.urb = NULL;
186	dev->isoc_ctl.transfer_buffer = NULL;
187	dev->isoc_ctl.num_bufs = 0;
188
189	dev->stream_state = STREAM_OFF;
190	}
191
192	/*
193	* Allocate URBs and start IRQ
194	*/
195	static int au0828_init_isoc(struct au0828_dev *dev, int max_packets,
196	int num_bufs, int max_pkt_size,
197	int (*isoc_copy) (struct au0828_dev *dev, struct urb *urb))
198	{
199	struct au0828_dmaqueue *dma_q = &dev->vidq;
200	int i;
201	int sb_size, pipe;
202	struct urb *urb;
203	int j, k;
204	int rc;
205
206	au0828_isocdbg("au0828: called au0828_prepare_isoc\n");
207
208	dev->isoc_ctl.isoc_copy = isoc_copy;
209	dev->isoc_ctl.num_bufs = num_bufs;
210
211	dev->isoc_ctl.urb = kcalloc(n: num_bufs, size: sizeof(void *), GFP_KERNEL);
212	if (!dev->isoc_ctl.urb) {
213	au0828_isocdbg("cannot alloc memory for usb buffers\n");
214	return -ENOMEM;
215	}
216
217	dev->isoc_ctl.transfer_buffer = kcalloc(n: num_bufs, size: sizeof(void *),
218	GFP_KERNEL);
219	if (!dev->isoc_ctl.transfer_buffer) {
220	au0828_isocdbg("cannot allocate memory for usb transfer\n");
221	kfree(objp: dev->isoc_ctl.urb);
222	return -ENOMEM;
223	}
224
225	dev->isoc_ctl.max_pkt_size = max_pkt_size;
226	dev->isoc_ctl.buf = NULL;
227
228	sb_size = max_packets * dev->isoc_ctl.max_pkt_size;
229
230	/* allocate urbs and transfer buffers */
231	for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
232	urb = usb_alloc_urb(iso_packets: max_packets, GFP_KERNEL);
233	if (!urb) {
234	au0828_isocdbg("cannot allocate URB\n");
235	au0828_uninit_isoc(dev);
236	return -ENOMEM;
237	}
238	dev->isoc_ctl.urb[i] = urb;
239
240	dev->isoc_ctl.transfer_buffer[i] = usb_alloc_coherent(dev: dev->usbdev,
241	size: sb_size, GFP_KERNEL, dma: &urb->transfer_dma);
242	if (!dev->isoc_ctl.transfer_buffer[i]) {
243	au0828_isocdbg("cannot allocate transfer buffer\n");
244	au0828_uninit_isoc(dev);
245	return -ENOMEM;
246	}
247	memset(dev->isoc_ctl.transfer_buffer[i], 0, sb_size);
248
249	pipe = usb_rcvisocpipe(dev->usbdev,
250	dev->isoc_in_endpointaddr);
251
252	usb_fill_int_urb(urb, dev: dev->usbdev, pipe,
253	transfer_buffer: dev->isoc_ctl.transfer_buffer[i], buffer_length: sb_size,
254	complete_fn: au0828_irq_callback, context: dma_q, interval: 1);
255
256	urb->number_of_packets = max_packets;
257	urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
258
259	k = 0;
260	for (j = 0; j < max_packets; j++) {
261	urb->iso_frame_desc[j].offset = k;
262	urb->iso_frame_desc[j].length =
263	dev->isoc_ctl.max_pkt_size;
264	k += dev->isoc_ctl.max_pkt_size;
265	}
266	}
267
268	/* submit urbs and enables IRQ */
269	for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
270	rc = usb_submit_urb(urb: dev->isoc_ctl.urb[i], GFP_ATOMIC);
271	if (rc) {
272	au0828_isocdbg("submit of urb %i failed (error=%i)\n",
273	i, rc);
274	au0828_uninit_isoc(dev);
275	return rc;
276	}
277	}
278
279	return 0;
280	}
281
282	/*
283	* Announces that a buffer were filled and request the next
284	*/
285	static inline void buffer_filled(struct au0828_dev *dev,
286	struct au0828_dmaqueue *dma_q,
287	struct au0828_buffer *buf)
288	{
289	struct vb2_v4l2_buffer *vb = &buf->vb;
290	struct vb2_queue *q = vb->vb2_buf.vb2_queue;
291
292	/* Advice that buffer was filled */
293	au0828_isocdbg("[%p/%d] wakeup\n", buf, buf->top_field);
294
295	if (q->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
296	vb->sequence = dev->frame_count++;
297	else
298	vb->sequence = dev->vbi_frame_count++;
299
300	vb->field = V4L2_FIELD_INTERLACED;
301	vb->vb2_buf.timestamp = ktime_get_ns();
302	vb2_buffer_done(vb: &vb->vb2_buf, state: VB2_BUF_STATE_DONE);
303	}
304
305	/*
306	* Identify the buffer header type and properly handles
307	*/
308	static void au0828_copy_video(struct au0828_dev *dev,
309	struct au0828_dmaqueue *dma_q,
310	struct au0828_buffer *buf,
311	unsigned char *p,
312	unsigned char *outp, unsigned long len)
313	{
314	void *fieldstart, *startwrite, *startread;
315	int linesdone, currlinedone, offset, lencopy, remain;
316	int bytesperline = dev->width << 1; /* Assumes 16-bit depth @@@@ */
317
318	if (len == 0)
319	return;
320
321	if (dma_q->pos + len > buf->length)
322	len = buf->length - dma_q->pos;
323
324	startread = p;
325	remain = len;
326
327	/* Interlaces frame */
328	if (buf->top_field)
329	fieldstart = outp;
330	else
331	fieldstart = outp + bytesperline;
332
333	linesdone = dma_q->pos / bytesperline;
334	currlinedone = dma_q->pos % bytesperline;
335	offset = linesdone * bytesperline * 2 + currlinedone;
336	startwrite = fieldstart + offset;
337	lencopy = bytesperline - currlinedone;
338	lencopy = lencopy > remain ? remain : lencopy;
339
340	if ((char *)startwrite + lencopy > (char *)outp + buf->length) {
341	au0828_isocdbg("Overflow of %zi bytes past buffer end (1)\n",
342	((char *)startwrite + lencopy) -
343	((char *)outp + buf->length));
344	remain = (char *)outp + buf->length - (char *)startwrite;
345	lencopy = remain;
346	}
347	if (lencopy <= 0)
348	return;
349	memcpy(startwrite, startread, lencopy);
350
351	remain -= lencopy;
352
353	while (remain > 0) {
354	startwrite += lencopy + bytesperline;
355	startread += lencopy;
356	if (bytesperline > remain)
357	lencopy = remain;
358	else
359	lencopy = bytesperline;
360
361	if ((char *)startwrite + lencopy > (char *)outp +
362	buf->length) {
363	au0828_isocdbg("Overflow %zi bytes past buf end (2)\n",
364	((char *)startwrite + lencopy) -
365	((char *)outp + buf->length));
366	lencopy = remain = (char *)outp + buf->length -
367	(char *)startwrite;
368	}
369	if (lencopy <= 0)
370	break;
371
372	memcpy(startwrite, startread, lencopy);
373
374	remain -= lencopy;
375	}
376
377	if (offset > 1440) {
378	/* We have enough data to check for greenscreen */
379	if (outp[0] < 0x60 && outp[1440] < 0x60)
380	dev->greenscreen_detected = 1;
381	}
382
383	dma_q->pos += len;
384	}
385
386	/*
387	* generic routine to get the next available buffer
388	*/
389	static inline void get_next_buf(struct au0828_dmaqueue *dma_q,
390	struct au0828_buffer **buf)
391	{
392	struct au0828_dev *dev = container_of(dma_q, struct au0828_dev, vidq);
393
394	if (list_empty(head: &dma_q->active)) {
395	au0828_isocdbg("No active queue to serve\n");
396	dev->isoc_ctl.buf = NULL;
397	*buf = NULL;
398	return;
399	}
400
401	/* Get the next buffer */
402	*buf = list_entry(dma_q->active.next, struct au0828_buffer, list);
403	/* Cleans up buffer - Useful for testing for frame/URB loss */
404	list_del(entry: &(*buf)->list);
405	dma_q->pos = 0;
406	(*buf)->vb_buf = (*buf)->mem;
407	dev->isoc_ctl.buf = *buf;
408
409	return;
410	}
411
412	static void au0828_copy_vbi(struct au0828_dev *dev,
413	struct au0828_dmaqueue *dma_q,
414	struct au0828_buffer *buf,
415	unsigned char *p,
416	unsigned char *outp, unsigned long len)
417	{
418	unsigned char *startwrite, *startread;
419	int bytesperline;
420	int i, j = 0;
421
422	if (dev == NULL) {
423	au0828_isocdbg("dev is null\n");
424	return;
425	}
426
427	if (dma_q == NULL) {
428	au0828_isocdbg("dma_q is null\n");
429	return;
430	}
431	if (buf == NULL)
432	return;
433	if (p == NULL) {
434	au0828_isocdbg("p is null\n");
435	return;
436	}
437	if (outp == NULL) {
438	au0828_isocdbg("outp is null\n");
439	return;
440	}
441
442	bytesperline = dev->vbi_width;
443
444	if (dma_q->pos + len > buf->length)
445	len = buf->length - dma_q->pos;
446
447	startread = p;
448	startwrite = outp + (dma_q->pos / 2);
449
450	/* Make sure the bottom field populates the second half of the frame */
451	if (buf->top_field == 0)
452	startwrite += bytesperline * dev->vbi_height;
453
454	for (i = 0; i < len; i += 2)
455	startwrite[j++] = startread[i+1];
456
457	dma_q->pos += len;
458	}
459
460
461	/*
462	* generic routine to get the next available VBI buffer
463	*/
464	static inline void vbi_get_next_buf(struct au0828_dmaqueue *dma_q,
465	struct au0828_buffer **buf)
466	{
467	struct au0828_dev *dev = container_of(dma_q, struct au0828_dev, vbiq);
468
469	if (list_empty(head: &dma_q->active)) {
470	au0828_isocdbg("No active queue to serve\n");
471	dev->isoc_ctl.vbi_buf = NULL;
472	*buf = NULL;
473	return;
474	}
475
476	/* Get the next buffer */
477	*buf = list_entry(dma_q->active.next, struct au0828_buffer, list);
478	/* Cleans up buffer - Useful for testing for frame/URB loss */
479	list_del(entry: &(*buf)->list);
480	dma_q->pos = 0;
481	(*buf)->vb_buf = (*buf)->mem;
482	dev->isoc_ctl.vbi_buf = *buf;
483	return;
484	}
485
486	/*
487	* Controls the isoc copy of each urb packet
488	*/
489	static inline int au0828_isoc_copy(struct au0828_dev *dev, struct urb *urb)
490	{
491	struct au0828_buffer *buf;
492	struct au0828_buffer *vbi_buf;
493	struct au0828_dmaqueue *dma_q = urb->context;
494	struct au0828_dmaqueue *vbi_dma_q = &dev->vbiq;
495	unsigned char *outp = NULL;
496	unsigned char *vbioutp = NULL;
497	int i, len = 0, rc = 1;
498	unsigned char *p;
499	unsigned char fbyte;
500	unsigned int vbi_field_size;
501	unsigned int remain, lencopy;
502
503	if (!dev)
504	return 0;
505
506	if (test_bit(DEV_DISCONNECTED, &dev->dev_state) ||
507	test_bit(DEV_MISCONFIGURED, &dev->dev_state))
508	return 0;
509
510	if (urb->status < 0) {
511	print_err_status(dev, packet: -1, status: urb->status);
512	if (urb->status == -ENOENT)
513	return 0;
514	}
515
516	buf = dev->isoc_ctl.buf;
517	if (buf != NULL)
518	outp = vb2_plane_vaddr(vb: &buf->vb.vb2_buf, plane_no: 0);
519
520	vbi_buf = dev->isoc_ctl.vbi_buf;
521	if (vbi_buf != NULL)
522	vbioutp = vb2_plane_vaddr(vb: &vbi_buf->vb.vb2_buf, plane_no: 0);
523
524	for (i = 0; i < urb->number_of_packets; i++) {
525	int status = urb->iso_frame_desc[i].status;
526
527	if (status < 0) {
528	print_err_status(dev, packet: i, status);
529	if (urb->iso_frame_desc[i].status != -EPROTO)
530	continue;
531	}
532
533	if (urb->iso_frame_desc[i].actual_length <= 0)
534	continue;
535
536	if (urb->iso_frame_desc[i].actual_length >
537	dev->max_pkt_size) {
538	au0828_isocdbg("packet bigger than packet size");
539	continue;
540	}
541
542	p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
543	fbyte = p[0];
544	len = urb->iso_frame_desc[i].actual_length - 4;
545	p += 4;
546
547	if (fbyte & 0x80) {
548	len -= 4;
549	p += 4;
550	au0828_isocdbg("Video frame %s\n",
551	(fbyte & 0x40) ? "odd" : "even");
552	if (fbyte & 0x40) {
553	/* VBI */
554	if (vbi_buf != NULL)
555	buffer_filled(dev, dma_q: vbi_dma_q, buf: vbi_buf);
556	vbi_get_next_buf(dma_q: vbi_dma_q, buf: &vbi_buf);
557	if (vbi_buf == NULL)
558	vbioutp = NULL;
559	else
560	vbioutp = vb2_plane_vaddr(
561	vb: &vbi_buf->vb.vb2_buf, plane_no: 0);
562
563	/* Video */
564	if (buf != NULL)
565	buffer_filled(dev, dma_q, buf);
566	get_next_buf(dma_q, buf: &buf);
567	if (buf == NULL)
568	outp = NULL;
569	else
570	outp = vb2_plane_vaddr(
571	vb: &buf->vb.vb2_buf, plane_no: 0);
572
573	/* As long as isoc traffic is arriving, keep
574	resetting the timer */
575	if (dev->vid_timeout_running)
576	mod_timer(timer: &dev->vid_timeout,
577	expires: jiffies + (HZ / 10));
578	if (dev->vbi_timeout_running)
579	mod_timer(timer: &dev->vbi_timeout,
580	expires: jiffies + (HZ / 10));
581	}
582
583	if (buf != NULL) {
584	if (fbyte & 0x40)
585	buf->top_field = 1;
586	else
587	buf->top_field = 0;
588	}
589
590	if (vbi_buf != NULL) {
591	if (fbyte & 0x40)
592	vbi_buf->top_field = 1;
593	else
594	vbi_buf->top_field = 0;
595	}
596
597	dev->vbi_read = 0;
598	vbi_dma_q->pos = 0;
599	dma_q->pos = 0;
600	}
601
602	vbi_field_size = dev->vbi_width * dev->vbi_height * 2;
603	if (dev->vbi_read < vbi_field_size) {
604	remain = vbi_field_size - dev->vbi_read;
605	if (len < remain)
606	lencopy = len;
607	else
608	lencopy = remain;
609
610	if (vbi_buf != NULL)
611	au0828_copy_vbi(dev, dma_q: vbi_dma_q, buf: vbi_buf, p,
612	outp: vbioutp, len);
613
614	len -= lencopy;
615	p += lencopy;
616	dev->vbi_read += lencopy;
617	}
618
619	if (dev->vbi_read >= vbi_field_size && buf != NULL)
620	au0828_copy_video(dev, dma_q, buf, p, outp, len);
621	}
622	return rc;
623	}
624
625	void au0828_usb_v4l2_media_release(struct au0828_dev *dev)
626	{
627	#ifdef CONFIG_MEDIA_CONTROLLER
628	int i;
629
630	for (i = 0; i < AU0828_MAX_INPUT; i++) {
631	if (AUVI_INPUT(i).type == AU0828_VMUX_UNDEFINED)
632	return;
633	media_device_unregister_entity(entity: &dev->input_ent[i]);
634	}
635	#endif
636	}
637
638	static void au0828_usb_v4l2_release(struct v4l2_device *v4l2_dev)
639	{
640	struct au0828_dev *dev =
641	container_of(v4l2_dev, struct au0828_dev, v4l2_dev);
642
643	v4l2_ctrl_handler_free(hdl: &dev->v4l2_ctrl_hdl);
644	v4l2_device_unregister(v4l2_dev: &dev->v4l2_dev);
645	au0828_usb_v4l2_media_release(dev);
646	au0828_usb_release(dev);
647	}
648
649	int au0828_v4l2_device_register(struct usb_interface *interface,
650	struct au0828_dev *dev)
651	{
652	int retval;
653
654	if (AUVI_INPUT(0).type == AU0828_VMUX_UNDEFINED)
655	return 0;
656
657	/* Create the v4l2_device */
658	#ifdef CONFIG_MEDIA_CONTROLLER
659	dev->v4l2_dev.mdev = dev->media_dev;
660	#endif
661	retval = v4l2_device_register(dev: &interface->dev, v4l2_dev: &dev->v4l2_dev);
662	if (retval) {
663	pr_err("%s() v4l2_device_register failed\n",
664	__func__);
665	return retval;
666	}
667
668	dev->v4l2_dev.release = au0828_usb_v4l2_release;
669
670	/* This control handler will inherit the controls from au8522 */
671	retval = v4l2_ctrl_handler_init(&dev->v4l2_ctrl_hdl, 4);
672	if (retval) {
673	pr_err("%s() v4l2_ctrl_handler_init failed\n",
674	__func__);
675	return retval;
676	}
677	dev->v4l2_dev.ctrl_handler = &dev->v4l2_ctrl_hdl;
678
679	return 0;
680	}
681
682	static int queue_setup(struct vb2_queue *vq,
683	unsigned int *nbuffers, unsigned int *nplanes,
684	unsigned int sizes[], struct device *alloc_devs[])
685	{
686	struct au0828_dev *dev = vb2_get_drv_priv(q: vq);
687	unsigned long size = dev->height * dev->bytesperline;
688
689	if (*nplanes)
690	return sizes[0] < size ? -EINVAL : 0;
691	*nplanes = 1;
692	sizes[0] = size;
693	return 0;
694	}
695
696	static int
697	buffer_prepare(struct vb2_buffer *vb)
698	{
699	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
700	struct au0828_buffer *buf = container_of(vbuf,
701	struct au0828_buffer, vb);
702	struct au0828_dev *dev = vb2_get_drv_priv(q: vb->vb2_queue);
703
704	buf->length = dev->height * dev->bytesperline;
705
706	if (vb2_plane_size(vb, plane_no: 0) < buf->length) {
707	pr_err("%s data will not fit into plane (%lu < %lu)\n",
708	__func__, vb2_plane_size(vb, 0), buf->length);
709	return -EINVAL;
710	}
711	vb2_set_plane_payload(vb: &buf->vb.vb2_buf, plane_no: 0, size: buf->length);
712	return 0;
713	}
714
715	static void
716	buffer_queue(struct vb2_buffer *vb)
717	{
718	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
719	struct au0828_buffer *buf = container_of(vbuf,
720	struct au0828_buffer,
721	vb);
722	struct au0828_dev *dev = vb2_get_drv_priv(q: vb->vb2_queue);
723	struct au0828_dmaqueue *vidq = &dev->vidq;
724	unsigned long flags = 0;
725
726	buf->mem = vb2_plane_vaddr(vb, plane_no: 0);
727	buf->length = vb2_plane_size(vb, plane_no: 0);
728
729	spin_lock_irqsave(&dev->slock, flags);
730	list_add_tail(new: &buf->list, head: &vidq->active);
731	spin_unlock_irqrestore(lock: &dev->slock, flags);
732	}
733
734	static int au0828_i2s_init(struct au0828_dev *dev)
735	{
736	/* Enable i2s mode */
737	au0828_writereg(dev, AU0828_AUDIOCTRL_50C, val: 0x01);
738	return 0;
739	}
740
741	/*
742	* Auvitek au0828 analog stream enable
743	*/
744	static int au0828_analog_stream_enable(struct au0828_dev *d)
745	{
746	struct usb_interface *iface;
747	int ret, h, w;
748
749	dprintk(1, "au0828_analog_stream_enable called\n");
750
751	if (test_bit(DEV_DISCONNECTED, &d->dev_state))
752	return -ENODEV;
753
754	iface = usb_ifnum_to_if(dev: d->usbdev, ifnum: 0);
755	if (iface && iface->cur_altsetting->desc.bAlternateSetting != 5) {
756	dprintk(1, "Changing intf#0 to alt 5\n");
757	/* set au0828 interface0 to AS5 here again */
758	ret = usb_set_interface(dev: d->usbdev, ifnum: 0, alternate: 5);
759	if (ret < 0) {
760	pr_info("Au0828 can't set alt setting to 5!\n");
761	return -EBUSY;
762	}
763	}
764
765	h = d->height / 2 + 2;
766	w = d->width * 2;
767
768	au0828_writereg(dev: d, AU0828_SENSORCTRL_VBI_103, val: 0x00);
769	au0828_writereg(dev: d, reg: 0x106, val: 0x00);
770	/* set x position */
771	au0828_writereg(dev: d, reg: 0x110, val: 0x00);
772	au0828_writereg(dev: d, reg: 0x111, val: 0x00);
773	au0828_writereg(dev: d, reg: 0x114, val: w & 0xff);
774	au0828_writereg(dev: d, reg: 0x115, val: w >> 8);
775	/* set y position */
776	au0828_writereg(dev: d, reg: 0x112, val: 0x00);
777	au0828_writereg(dev: d, reg: 0x113, val: 0x00);
778	au0828_writereg(dev: d, reg: 0x116, val: h & 0xff);
779	au0828_writereg(dev: d, reg: 0x117, val: h >> 8);
780	au0828_writereg(dev: d, AU0828_SENSORCTRL_100, val: 0xb3);
781
782	return 0;
783	}
784
785	static int au0828_analog_stream_disable(struct au0828_dev *d)
786	{
787	dprintk(1, "au0828_analog_stream_disable called\n");
788	au0828_writereg(dev: d, AU0828_SENSORCTRL_100, val: 0x0);
789	return 0;
790	}
791
792	static void au0828_analog_stream_reset(struct au0828_dev *dev)
793	{
794	dprintk(1, "au0828_analog_stream_reset called\n");
795	au0828_writereg(dev, AU0828_SENSORCTRL_100, val: 0x0);
796	mdelay(30);
797	au0828_writereg(dev, AU0828_SENSORCTRL_100, val: 0xb3);
798	}
799
800	/*
801	* Some operations needs to stop current streaming
802	*/
803	static int au0828_stream_interrupt(struct au0828_dev *dev)
804	{
805	dev->stream_state = STREAM_INTERRUPT;
806	if (test_bit(DEV_DISCONNECTED, &dev->dev_state))
807	return -ENODEV;
808	return 0;
809	}
810
811	int au0828_start_analog_streaming(struct vb2_queue *vq, unsigned int count)
812	{
813	struct au0828_dev *dev = vb2_get_drv_priv(q: vq);
814	int rc = 0;
815
816	dprintk(1, "au0828_start_analog_streaming called %d\n",
817	dev->streaming_users);
818
819	if (vq->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
820	dev->frame_count = 0;
821	else
822	dev->vbi_frame_count = 0;
823
824	if (dev->streaming_users == 0) {
825	/* If we were doing ac97 instead of i2s, it would go here...*/
826	au0828_i2s_init(dev);
827	rc = au0828_init_isoc(dev, AU0828_ISO_PACKETS_PER_URB,
828	AU0828_MAX_ISO_BUFS, max_pkt_size: dev->max_pkt_size,
829	isoc_copy: au0828_isoc_copy);
830	if (rc < 0) {
831	pr_info("au0828_init_isoc failed\n");
832	return rc;
833	}
834
835	v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_stream, 1);
836
837	if (vq->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
838	dev->vid_timeout_running = 1;
839	mod_timer(timer: &dev->vid_timeout, expires: jiffies + (HZ / 10));
840	} else if (vq->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
841	dev->vbi_timeout_running = 1;
842	mod_timer(timer: &dev->vbi_timeout, expires: jiffies + (HZ / 10));
843	}
844	}
845	dev->streaming_users++;
846	return rc;
847	}
848
849	static void au0828_stop_streaming(struct vb2_queue *vq)
850	{
851	struct au0828_dev *dev = vb2_get_drv_priv(q: vq);
852	struct au0828_dmaqueue *vidq = &dev->vidq;
853	unsigned long flags = 0;
854
855	dprintk(1, "au0828_stop_streaming called %d\n", dev->streaming_users);
856
857	if (dev->streaming_users-- == 1) {
858	au0828_uninit_isoc(dev);
859	v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_stream, 0);
860	}
861
862	dev->vid_timeout_running = 0;
863	del_timer_sync(timer: &dev->vid_timeout);
864
865	spin_lock_irqsave(&dev->slock, flags);
866	if (dev->isoc_ctl.buf != NULL) {
867	vb2_buffer_done(vb: &dev->isoc_ctl.buf->vb.vb2_buf,
868	state: VB2_BUF_STATE_ERROR);
869	dev->isoc_ctl.buf = NULL;
870	}
871	while (!list_empty(head: &vidq->active)) {
872	struct au0828_buffer *buf;
873
874	buf = list_entry(vidq->active.next, struct au0828_buffer, list);
875	vb2_buffer_done(vb: &buf->vb.vb2_buf, state: VB2_BUF_STATE_ERROR);
876	list_del(entry: &buf->list);
877	}
878	spin_unlock_irqrestore(lock: &dev->slock, flags);
879	}
880
881	void au0828_stop_vbi_streaming(struct vb2_queue *vq)
882	{
883	struct au0828_dev *dev = vb2_get_drv_priv(q: vq);
884	struct au0828_dmaqueue *vbiq = &dev->vbiq;
885	unsigned long flags = 0;
886
887	dprintk(1, "au0828_stop_vbi_streaming called %d\n",
888	dev->streaming_users);
889
890	if (dev->streaming_users-- == 1) {
891	au0828_uninit_isoc(dev);
892	v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_stream, 0);
893	}
894
895	spin_lock_irqsave(&dev->slock, flags);
896	if (dev->isoc_ctl.vbi_buf != NULL) {
897	vb2_buffer_done(vb: &dev->isoc_ctl.vbi_buf->vb.vb2_buf,
898	state: VB2_BUF_STATE_ERROR);
899	dev->isoc_ctl.vbi_buf = NULL;
900	}
901	while (!list_empty(head: &vbiq->active)) {
902	struct au0828_buffer *buf;
903
904	buf = list_entry(vbiq->active.next, struct au0828_buffer, list);
905	list_del(entry: &buf->list);
906	vb2_buffer_done(vb: &buf->vb.vb2_buf, state: VB2_BUF_STATE_ERROR);
907	}
908	spin_unlock_irqrestore(lock: &dev->slock, flags);
909
910	dev->vbi_timeout_running = 0;
911	del_timer_sync(timer: &dev->vbi_timeout);
912	}
913
914	static const struct vb2_ops au0828_video_qops = {
915	.queue_setup = queue_setup,
916	.buf_prepare = buffer_prepare,
917	.buf_queue = buffer_queue,
918	.prepare_streaming = v4l_vb2q_enable_media_source,
919	.start_streaming = au0828_start_analog_streaming,
920	.stop_streaming = au0828_stop_streaming,
921	.wait_prepare = vb2_ops_wait_prepare,
922	.wait_finish = vb2_ops_wait_finish,
923	};
924
925	/* ------------------------------------------------------------------
926	V4L2 interface
927	------------------------------------------------------------------*/
928	/*
929	* au0828_analog_unregister
930	* unregister v4l2 devices
931	*/
932	int au0828_analog_unregister(struct au0828_dev *dev)
933	{
934	dprintk(1, "au0828_analog_unregister called\n");
935
936	/* No analog TV */
937	if (AUVI_INPUT(0).type == AU0828_VMUX_UNDEFINED)
938	return 0;
939
940	mutex_lock(&au0828_sysfs_lock);
941	vb2_video_unregister_device(vdev: &dev->vdev);
942	vb2_video_unregister_device(vdev: &dev->vbi_dev);
943	mutex_unlock(lock: &au0828_sysfs_lock);
944
945	v4l2_device_disconnect(v4l2_dev: &dev->v4l2_dev);
946	v4l2_device_put(v4l2_dev: &dev->v4l2_dev);
947
948	return 1;
949	}
950
951	/* This function ensures that video frames continue to be delivered even if
952	the ITU-656 input isn't receiving any data (thereby preventing applications
953	such as tvtime from hanging) */
954	static void au0828_vid_buffer_timeout(struct timer_list *t)
955	{
956	struct au0828_dev *dev = from_timer(dev, t, vid_timeout);
957	struct au0828_dmaqueue *dma_q = &dev->vidq;
958	struct au0828_buffer *buf;
959	unsigned char *vid_data;
960	unsigned long flags = 0;
961
962	spin_lock_irqsave(&dev->slock, flags);
963
964	buf = dev->isoc_ctl.buf;
965	if (buf != NULL) {
966	vid_data = vb2_plane_vaddr(vb: &buf->vb.vb2_buf, plane_no: 0);
967	memset(vid_data, 0x00, buf->length); /* Blank green frame */
968	buffer_filled(dev, dma_q, buf);
969	}
970	get_next_buf(dma_q, buf: &buf);
971
972	if (dev->vid_timeout_running == 1)
973	mod_timer(timer: &dev->vid_timeout, expires: jiffies + (HZ / 10));
974
975	spin_unlock_irqrestore(lock: &dev->slock, flags);
976	}
977
978	static void au0828_vbi_buffer_timeout(struct timer_list *t)
979	{
980	struct au0828_dev *dev = from_timer(dev, t, vbi_timeout);
981	struct au0828_dmaqueue *dma_q = &dev->vbiq;
982	struct au0828_buffer *buf;
983	unsigned char *vbi_data;
984	unsigned long flags = 0;
985
986	spin_lock_irqsave(&dev->slock, flags);
987
988	buf = dev->isoc_ctl.vbi_buf;
989	if (buf != NULL) {
990	vbi_data = vb2_plane_vaddr(vb: &buf->vb.vb2_buf, plane_no: 0);
991	memset(vbi_data, 0x00, buf->length);
992	buffer_filled(dev, dma_q, buf);
993	}
994	vbi_get_next_buf(dma_q, buf: &buf);
995
996	if (dev->vbi_timeout_running == 1)
997	mod_timer(timer: &dev->vbi_timeout, expires: jiffies + (HZ / 10));
998	spin_unlock_irqrestore(lock: &dev->slock, flags);
999	}
1000
1001	static int au0828_v4l2_open(struct file *filp)
1002	{
1003	struct au0828_dev *dev = video_drvdata(file: filp);
1004	int ret;
1005
1006	dprintk(1,
1007	"%s called std_set %d dev_state %ld stream users %d users %d\n",
1008	__func__, dev->std_set_in_tuner_core, dev->dev_state,
1009	dev->streaming_users, dev->users);
1010
1011	if (mutex_lock_interruptible(&dev->lock))
1012	return -ERESTARTSYS;
1013
1014	ret = v4l2_fh_open(filp);
1015	if (ret) {
1016	au0828_isocdbg("%s: v4l2_fh_open() returned error %d\n",
1017	__func__, ret);
1018	mutex_unlock(lock: &dev->lock);
1019	return ret;
1020	}
1021
1022	if (dev->users == 0) {
1023	au0828_analog_stream_enable(d: dev);
1024	au0828_analog_stream_reset(dev);
1025	dev->stream_state = STREAM_OFF;
1026	set_bit(nr: DEV_INITIALIZED, addr: &dev->dev_state);
1027	}
1028	dev->users++;
1029	mutex_unlock(lock: &dev->lock);
1030	return ret;
1031	}
1032
1033	static int au0828_v4l2_close(struct file *filp)
1034	{
1035	int ret;
1036	struct au0828_dev *dev = video_drvdata(file: filp);
1037	struct video_device *vdev = video_devdata(file: filp);
1038
1039	dprintk(1,
1040	"%s called std_set %d dev_state %ld stream users %d users %d\n",
1041	__func__, dev->std_set_in_tuner_core, dev->dev_state,
1042	dev->streaming_users, dev->users);
1043
1044	mutex_lock(&dev->lock);
1045	if (vdev->vfl_type == VFL_TYPE_VIDEO && dev->vid_timeout_running) {
1046	/* Cancel timeout thread in case they didn't call streamoff */
1047	dev->vid_timeout_running = 0;
1048	del_timer_sync(timer: &dev->vid_timeout);
1049	} else if (vdev->vfl_type == VFL_TYPE_VBI &&
1050	dev->vbi_timeout_running) {
1051	/* Cancel timeout thread in case they didn't call streamoff */
1052	dev->vbi_timeout_running = 0;
1053	del_timer_sync(timer: &dev->vbi_timeout);
1054	}
1055
1056	if (test_bit(DEV_DISCONNECTED, &dev->dev_state))
1057	goto end;
1058
1059	if (dev->users == 1) {
1060	/*
1061	* Avoid putting tuner in sleep if DVB or ALSA are
1062	* streaming.
1063	*
1064	* On most USB devices like au0828 the tuner can
1065	* be safely put in sleep state here if ALSA isn't
1066	* streaming. Exceptions are some very old USB tuner
1067	* models such as em28xx-based WinTV USB2 which have
1068	* a separate audio output jack. The devices that have
1069	* a separate audio output jack have analog tuners,
1070	* like Philips FM1236. Those devices are always on,
1071	* so the s_power callback are silently ignored.
1072	* So, the current logic here does the following:
1073	* Disable (put tuner to sleep) when
1074	* - ALSA and DVB aren't streaming.
1075	* - the last V4L2 file handler is closed.
1076	*
1077	* FIXME:
1078	*
1079	* Additionally, this logic could be improved to
1080	* disable the media source if the above conditions
1081	* are met and if the device:
1082	* - doesn't have a separate audio out plug (or
1083	* - doesn't use a silicon tuner like xc2028/3028/4000/5000).
1084	*
1085	* Once this additional logic is in place, a callback
1086	* is needed to enable the media source and power on
1087	* the tuner, for radio to work.
1088	*/
1089	ret = v4l_enable_media_source(vdev);
1090	if (ret == 0)
1091	v4l2_device_call_all(&dev->v4l2_dev, 0, tuner,
1092	standby);
1093	dev->std_set_in_tuner_core = 0;
1094
1095	/* When close the device, set the usb intf0 into alt0 to free
1096	USB bandwidth */
1097	ret = usb_set_interface(dev: dev->usbdev, ifnum: 0, alternate: 0);
1098	if (ret < 0)
1099	pr_info("Au0828 can't set alternate to 0!\n");
1100	}
1101	end:
1102	_vb2_fop_release(file: filp, NULL);
1103	dev->users--;
1104	mutex_unlock(lock: &dev->lock);
1105	return 0;
1106	}
1107
1108	/* Must be called with dev->lock held */
1109	static void au0828_init_tuner(struct au0828_dev *dev)
1110	{
1111	struct v4l2_frequency f = {
1112	.frequency = dev->ctrl_freq,
1113	.type = V4L2_TUNER_ANALOG_TV,
1114	};
1115
1116	dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1117	dev->std_set_in_tuner_core, dev->dev_state);
1118
1119	if (dev->std_set_in_tuner_core)
1120	return;
1121	dev->std_set_in_tuner_core = 1;
1122	i2c_gate_ctrl(dev, val: 1);
1123	/* If we've never sent the standard in tuner core, do so now.
1124	We don't do this at device probe because we don't want to
1125	incur the cost of a firmware load */
1126	v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_std, dev->std);
1127	v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, &f);
1128	i2c_gate_ctrl(dev, val: 0);
1129	}
1130
1131	static int au0828_set_format(struct au0828_dev *dev, unsigned int cmd,
1132	struct v4l2_format *format)
1133	{
1134	int ret;
1135	int width = format->fmt.pix.width;
1136	int height = format->fmt.pix.height;
1137
1138	/* If they are demanding a format other than the one we support,
1139	bail out (tvtime asks for UYVY and then retries with YUYV) */
1140	if (format->fmt.pix.pixelformat != V4L2_PIX_FMT_UYVY)
1141	return -EINVAL;
1142
1143	/* format->fmt.pix.width only support 720 and height 480 */
1144	if (width != 720)
1145	width = 720;
1146	if (height != 480)
1147	height = 480;
1148
1149	format->fmt.pix.width = width;
1150	format->fmt.pix.height = height;
1151	format->fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY;
1152	format->fmt.pix.bytesperline = width * 2;
1153	format->fmt.pix.sizeimage = width * height * 2;
1154	format->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1155	format->fmt.pix.field = V4L2_FIELD_INTERLACED;
1156
1157	if (cmd == VIDIOC_TRY_FMT)
1158	return 0;
1159
1160	/* maybe set new image format, driver current only support 720*480 */
1161	dev->width = width;
1162	dev->height = height;
1163	dev->frame_size = width * height * 2;
1164	dev->field_size = width * height;
1165	dev->bytesperline = width * 2;
1166
1167	if (dev->stream_state == STREAM_ON) {
1168	dprintk(1, "VIDIOC_SET_FMT: interrupting stream!\n");
1169	ret = au0828_stream_interrupt(dev);
1170	if (ret != 0) {
1171	dprintk(1, "error interrupting video stream!\n");
1172	return ret;
1173	}
1174	}
1175
1176	au0828_analog_stream_enable(d: dev);
1177
1178	return 0;
1179	}
1180
1181	static int vidioc_querycap(struct file *file, void *priv,
1182	struct v4l2_capability *cap)
1183	{
1184	struct au0828_dev *dev = video_drvdata(file);
1185
1186	dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1187	dev->std_set_in_tuner_core, dev->dev_state);
1188
1189	strscpy(cap->driver, "au0828", sizeof(cap->driver));
1190	strscpy(cap->card, dev->board.name, sizeof(cap->card));
1191	usb_make_path(dev: dev->usbdev, buf: cap->bus_info, size: sizeof(cap->bus_info));
1192
1193	/* set the device capabilities */
1194	cap->capabilities =
1195	V4L2_CAP_AUDIO | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING |
1196	V4L2_CAP_TUNER | V4L2_CAP_VBI_CAPTURE | V4L2_CAP_VIDEO_CAPTURE |
1197	V4L2_CAP_DEVICE_CAPS;
1198	return 0;
1199	}
1200
1201	static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
1202	struct v4l2_fmtdesc *f)
1203	{
1204	if (f->index)
1205	return -EINVAL;
1206
1207	dprintk(1, "%s called\n", __func__);
1208
1209	f->pixelformat = V4L2_PIX_FMT_UYVY;
1210
1211	return 0;
1212	}
1213
1214	static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
1215	struct v4l2_format *f)
1216	{
1217	struct au0828_dev *dev = video_drvdata(file);
1218
1219	dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1220	dev->std_set_in_tuner_core, dev->dev_state);
1221
1222	f->fmt.pix.width = dev->width;
1223	f->fmt.pix.height = dev->height;
1224	f->fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY;
1225	f->fmt.pix.bytesperline = dev->bytesperline;
1226	f->fmt.pix.sizeimage = dev->frame_size;
1227	f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; /* NTSC/PAL */
1228	f->fmt.pix.field = V4L2_FIELD_INTERLACED;
1229	return 0;
1230	}
1231
1232	static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
1233	struct v4l2_format *f)
1234	{
1235	struct au0828_dev *dev = video_drvdata(file);
1236
1237	dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1238	dev->std_set_in_tuner_core, dev->dev_state);
1239
1240	return au0828_set_format(dev, VIDIOC_TRY_FMT, format: f);
1241	}
1242
1243	static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
1244	struct v4l2_format *f)
1245	{
1246	struct au0828_dev *dev = video_drvdata(file);
1247	int rc;
1248
1249	dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1250	dev->std_set_in_tuner_core, dev->dev_state);
1251
1252	rc = check_dev(dev);
1253	if (rc < 0)
1254	return rc;
1255
1256	if (vb2_is_busy(q: &dev->vb_vidq)) {
1257	pr_info("%s queue busy\n", __func__);
1258	rc = -EBUSY;
1259	goto out;
1260	}
1261
1262	rc = au0828_set_format(dev, VIDIOC_S_FMT, format: f);
1263	out:
1264	return rc;
1265	}
1266
1267	static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm)
1268	{
1269	struct au0828_dev *dev = video_drvdata(file);
1270
1271	dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1272	dev->std_set_in_tuner_core, dev->dev_state);
1273
1274	if (norm == dev->std)
1275	return 0;
1276
1277	if (dev->streaming_users > 0)
1278	return -EBUSY;
1279
1280	dev->std = norm;
1281
1282	au0828_init_tuner(dev);
1283
1284	i2c_gate_ctrl(dev, val: 1);
1285
1286	/*
1287	* FIXME: when we support something other than 60Hz standards,
1288	* we are going to have to make the au0828 bridge adjust the size
1289	* of its capture buffer, which is currently hardcoded at 720x480
1290	*/
1291
1292	v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_std, norm);
1293
1294	i2c_gate_ctrl(dev, val: 0);
1295
1296	return 0;
1297	}
1298
1299	static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm)
1300	{
1301	struct au0828_dev *dev = video_drvdata(file);
1302
1303	dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1304	dev->std_set_in_tuner_core, dev->dev_state);
1305
1306	*norm = dev->std;
1307	return 0;
1308	}
1309
1310	static int vidioc_enum_input(struct file *file, void *priv,
1311	struct v4l2_input *input)
1312	{
1313	struct au0828_dev *dev = video_drvdata(file);
1314	unsigned int tmp;
1315
1316	static const char *inames[] = {
1317	[AU0828_VMUX_UNDEFINED] = "Undefined",
1318	[AU0828_VMUX_COMPOSITE] = "Composite",
1319	[AU0828_VMUX_SVIDEO] = "S-Video",
1320	[AU0828_VMUX_CABLE] = "Cable TV",
1321	[AU0828_VMUX_TELEVISION] = "Television",
1322	[AU0828_VMUX_DVB] = "DVB",
1323	};
1324
1325	dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1326	dev->std_set_in_tuner_core, dev->dev_state);
1327
1328	tmp = input->index;
1329
1330	if (tmp >= AU0828_MAX_INPUT)
1331	return -EINVAL;
1332	if (AUVI_INPUT(tmp).type == 0)
1333	return -EINVAL;
1334
1335	input->index = tmp;
1336	strscpy(input->name, inames[AUVI_INPUT(tmp).type], sizeof(input->name));
1337	if ((AUVI_INPUT(tmp).type == AU0828_VMUX_TELEVISION) ||
1338	(AUVI_INPUT(tmp).type == AU0828_VMUX_CABLE)) {
1339	input->type |= V4L2_INPUT_TYPE_TUNER;
1340	input->audioset = 1;
1341	} else {
1342	input->type |= V4L2_INPUT_TYPE_CAMERA;
1343	input->audioset = 2;
1344	}
1345
1346	input->std = dev->vdev.tvnorms;
1347
1348	return 0;
1349	}
1350
1351	static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1352	{
1353	struct au0828_dev *dev = video_drvdata(file);
1354
1355	dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1356	dev->std_set_in_tuner_core, dev->dev_state);
1357
1358	*i = dev->ctrl_input;
1359	return 0;
1360	}
1361
1362	static void au0828_s_input(struct au0828_dev *dev, int index)
1363	{
1364	int i;
1365
1366	dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1367	dev->std_set_in_tuner_core, dev->dev_state);
1368
1369	switch (AUVI_INPUT(index).type) {
1370	case AU0828_VMUX_SVIDEO:
1371	dev->input_type = AU0828_VMUX_SVIDEO;
1372	dev->ctrl_ainput = 1;
1373	break;
1374	case AU0828_VMUX_COMPOSITE:
1375	dev->input_type = AU0828_VMUX_COMPOSITE;
1376	dev->ctrl_ainput = 1;
1377	break;
1378	case AU0828_VMUX_TELEVISION:
1379	dev->input_type = AU0828_VMUX_TELEVISION;
1380	dev->ctrl_ainput = 0;
1381	break;
1382	default:
1383	dprintk(1, "unknown input type set [%d]\n",
1384	AUVI_INPUT(index).type);
1385	return;
1386	}
1387
1388	dev->ctrl_input = index;
1389
1390	v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_routing,
1391	AUVI_INPUT(index).vmux, 0, 0);
1392
1393	for (i = 0; i < AU0828_MAX_INPUT; i++) {
1394	int enable = 0;
1395	if (AUVI_INPUT(i).audio_setup == NULL)
1396	continue;
1397
1398	if (i == index)
1399	enable = 1;
1400	else
1401	enable = 0;
1402	if (enable) {
1403	(AUVI_INPUT(i).audio_setup)(dev, enable);
1404	} else {
1405	/* Make sure we leave it turned on if some
1406	other input is routed to this callback */
1407	if ((AUVI_INPUT(i).audio_setup) !=
1408	((AUVI_INPUT(index).audio_setup))) {
1409	(AUVI_INPUT(i).audio_setup)(dev, enable);
1410	}
1411	}
1412	}
1413
1414	v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
1415	AUVI_INPUT(index).amux, 0, 0);
1416	}
1417
1418	static int vidioc_s_input(struct file *file, void *priv, unsigned int index)
1419	{
1420	struct au0828_dev *dev = video_drvdata(file);
1421	struct video_device *vfd = video_devdata(file);
1422
1423	dprintk(1, "VIDIOC_S_INPUT in function %s, input=%d\n", __func__,
1424	index);
1425	if (index >= AU0828_MAX_INPUT)
1426	return -EINVAL;
1427	if (AUVI_INPUT(index).type == 0)
1428	return -EINVAL;
1429
1430	if (dev->ctrl_input == index)
1431	return 0;
1432
1433	au0828_s_input(dev, index);
1434
1435	/*
1436	* Input has been changed. Disable the media source
1437	* associated with the old input and enable source
1438	* for the newly set input
1439	*/
1440	v4l_disable_media_source(vdev: vfd);
1441	return v4l_enable_media_source(vdev: vfd);
1442	}
1443
1444	static int vidioc_enumaudio(struct file *file, void *priv, struct v4l2_audio *a)
1445	{
1446	if (a->index > 1)
1447	return -EINVAL;
1448
1449	dprintk(1, "%s called\n", __func__);
1450
1451	if (a->index == 0)
1452	strscpy(a->name, "Television", sizeof(a->name));
1453	else
1454	strscpy(a->name, "Line in", sizeof(a->name));
1455
1456	a->capability = V4L2_AUDCAP_STEREO;
1457	return 0;
1458	}
1459
1460	static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1461	{
1462	struct au0828_dev *dev = video_drvdata(file);
1463
1464	dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1465	dev->std_set_in_tuner_core, dev->dev_state);
1466
1467	a->index = dev->ctrl_ainput;
1468	if (a->index == 0)
1469	strscpy(a->name, "Television", sizeof(a->name));
1470	else
1471	strscpy(a->name, "Line in", sizeof(a->name));
1472
1473	a->capability = V4L2_AUDCAP_STEREO;
1474	return 0;
1475	}
1476
1477	static int vidioc_s_audio(struct file *file, void *priv, const struct v4l2_audio *a)
1478	{
1479	struct au0828_dev *dev = video_drvdata(file);
1480
1481	if (a->index != dev->ctrl_ainput)
1482	return -EINVAL;
1483
1484	dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1485	dev->std_set_in_tuner_core, dev->dev_state);
1486	return 0;
1487	}
1488
1489	static int vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1490	{
1491	struct au0828_dev *dev = video_drvdata(file);
1492	struct video_device *vfd = video_devdata(file);
1493	int ret;
1494
1495	if (t->index != 0)
1496	return -EINVAL;
1497
1498	ret = v4l_enable_media_source(vdev: vfd);
1499	if (ret)
1500	return ret;
1501
1502	dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1503	dev->std_set_in_tuner_core, dev->dev_state);
1504
1505	strscpy(t->name, "Auvitek tuner", sizeof(t->name));
1506
1507	au0828_init_tuner(dev);
1508	i2c_gate_ctrl(dev, val: 1);
1509	v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1510	i2c_gate_ctrl(dev, val: 0);
1511	return 0;
1512	}
1513
1514	static int vidioc_s_tuner(struct file *file, void *priv,
1515	const struct v4l2_tuner *t)
1516	{
1517	struct au0828_dev *dev = video_drvdata(file);
1518
1519	if (t->index != 0)
1520	return -EINVAL;
1521
1522	dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1523	dev->std_set_in_tuner_core, dev->dev_state);
1524
1525	au0828_init_tuner(dev);
1526	i2c_gate_ctrl(dev, val: 1);
1527	v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1528	i2c_gate_ctrl(dev, val: 0);
1529
1530	dprintk(1, "VIDIOC_S_TUNER: signal = %x, afc = %x\n", t->signal,
1531	t->afc);
1532
1533	return 0;
1534
1535	}
1536
1537	static int vidioc_g_frequency(struct file *file, void *priv,
1538	struct v4l2_frequency *freq)
1539	{
1540	struct au0828_dev *dev = video_drvdata(file);
1541
1542	if (freq->tuner != 0)
1543	return -EINVAL;
1544	dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1545	dev->std_set_in_tuner_core, dev->dev_state);
1546	freq->frequency = dev->ctrl_freq;
1547	return 0;
1548	}
1549
1550	static int vidioc_s_frequency(struct file *file, void *priv,
1551	const struct v4l2_frequency *freq)
1552	{
1553	struct au0828_dev *dev = video_drvdata(file);
1554	struct v4l2_frequency new_freq = *freq;
1555
1556	if (freq->tuner != 0)
1557	return -EINVAL;
1558
1559	dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1560	dev->std_set_in_tuner_core, dev->dev_state);
1561
1562	au0828_init_tuner(dev);
1563	i2c_gate_ctrl(dev, val: 1);
1564
1565	v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, freq);
1566	/* Get the actual set (and possibly clamped) frequency */
1567	v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_frequency, &new_freq);
1568	dev->ctrl_freq = new_freq.frequency;
1569
1570	i2c_gate_ctrl(dev, val: 0);
1571
1572	au0828_analog_stream_reset(dev);
1573
1574	return 0;
1575	}
1576
1577
1578	/* RAW VBI ioctls */
1579
1580	static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1581	struct v4l2_format *format)
1582	{
1583	struct au0828_dev *dev = video_drvdata(file);
1584
1585	dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1586	dev->std_set_in_tuner_core, dev->dev_state);
1587
1588	format->fmt.vbi.samples_per_line = dev->vbi_width;
1589	format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1590	format->fmt.vbi.offset = 0;
1591	format->fmt.vbi.flags = 0;
1592	format->fmt.vbi.sampling_rate = 6750000 * 4 / 2;
1593
1594	format->fmt.vbi.count[0] = dev->vbi_height;
1595	format->fmt.vbi.count[1] = dev->vbi_height;
1596	format->fmt.vbi.start[0] = 21;
1597	format->fmt.vbi.start[1] = 284;
1598	memset(format->fmt.vbi.reserved, 0, sizeof(format->fmt.vbi.reserved));
1599
1600	return 0;
1601	}
1602
1603	static int vidioc_g_pixelaspect(struct file *file, void *priv,
1604	int type, struct v4l2_fract *f)
1605	{
1606	struct au0828_dev *dev = video_drvdata(file);
1607
1608	if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1609	return -EINVAL;
1610
1611	dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1612	dev->std_set_in_tuner_core, dev->dev_state);
1613
1614	f->numerator = 54;
1615	f->denominator = 59;
1616
1617	return 0;
1618	}
1619
1620	static int vidioc_g_selection(struct file *file, void *priv,
1621	struct v4l2_selection *s)
1622	{
1623	struct au0828_dev *dev = video_drvdata(file);
1624
1625	if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1626	return -EINVAL;
1627
1628	switch (s->target) {
1629	case V4L2_SEL_TGT_CROP_BOUNDS:
1630	case V4L2_SEL_TGT_CROP_DEFAULT:
1631	s->r.left = 0;
1632	s->r.top = 0;
1633	s->r.width = dev->width;
1634	s->r.height = dev->height;
1635	break;
1636	default:
1637	return -EINVAL;
1638	}
1639	return 0;
1640	}
1641
1642	#ifdef CONFIG_VIDEO_ADV_DEBUG
1643	static int vidioc_g_register(struct file *file, void *priv,
1644	struct v4l2_dbg_register *reg)
1645	{
1646	struct au0828_dev *dev = video_drvdata(file);
1647
1648	dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1649	dev->std_set_in_tuner_core, dev->dev_state);
1650
1651	reg->val = au0828_read(dev, reg->reg);
1652	reg->size = 1;
1653	return 0;
1654	}
1655
1656	static int vidioc_s_register(struct file *file, void *priv,
1657	const struct v4l2_dbg_register *reg)
1658	{
1659	struct au0828_dev *dev = video_drvdata(file);
1660
1661	dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1662	dev->std_set_in_tuner_core, dev->dev_state);
1663
1664	return au0828_writereg(dev, reg: reg->reg, val: reg->val);
1665	}
1666	#endif
1667
1668	static int vidioc_log_status(struct file *file, void *fh)
1669	{
1670	struct video_device *vdev = video_devdata(file);
1671
1672	dprintk(1, "%s called\n", __func__);
1673
1674	v4l2_ctrl_log_status(file, fh);
1675	v4l2_device_call_all(vdev->v4l2_dev, 0, core, log_status);
1676	return 0;
1677	}
1678
1679	void au0828_v4l2_suspend(struct au0828_dev *dev)
1680	{
1681	struct urb *urb;
1682	int i;
1683
1684	pr_info("stopping V4L2\n");
1685
1686	if (dev->stream_state == STREAM_ON) {
1687	pr_info("stopping V4L2 active URBs\n");
1688	au0828_analog_stream_disable(d: dev);
1689	/* stop urbs */
1690	for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
1691	urb = dev->isoc_ctl.urb[i];
1692	if (urb) {
1693	if (!irqs_disabled())
1694	usb_kill_urb(urb);
1695	else
1696	usb_unlink_urb(urb);
1697	}
1698	}
1699	}
1700
1701	if (dev->vid_timeout_running)
1702	del_timer_sync(timer: &dev->vid_timeout);
1703	if (dev->vbi_timeout_running)
1704	del_timer_sync(timer: &dev->vbi_timeout);
1705	}
1706
1707	void au0828_v4l2_resume(struct au0828_dev *dev)
1708	{
1709	int i, rc;
1710
1711	pr_info("restarting V4L2\n");
1712
1713	if (dev->stream_state == STREAM_ON) {
1714	au0828_stream_interrupt(dev);
1715	au0828_init_tuner(dev);
1716	}
1717
1718	if (dev->vid_timeout_running)
1719	mod_timer(timer: &dev->vid_timeout, expires: jiffies + (HZ / 10));
1720	if (dev->vbi_timeout_running)
1721	mod_timer(timer: &dev->vbi_timeout, expires: jiffies + (HZ / 10));
1722
1723	/* If we were doing ac97 instead of i2s, it would go here...*/
1724	au0828_i2s_init(dev);
1725
1726	au0828_analog_stream_enable(d: dev);
1727
1728	if (!(dev->stream_state == STREAM_ON)) {
1729	au0828_analog_stream_reset(dev);
1730	/* submit urbs */
1731	for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
1732	rc = usb_submit_urb(urb: dev->isoc_ctl.urb[i], GFP_ATOMIC);
1733	if (rc) {
1734	au0828_isocdbg("submit of urb %i failed (error=%i)\n",
1735	i, rc);
1736	au0828_uninit_isoc(dev);
1737	}
1738	}
1739	}
1740	}
1741
1742	static const struct v4l2_file_operations au0828_v4l_fops = {
1743	.owner = THIS_MODULE,
1744	.open = au0828_v4l2_open,
1745	.release = au0828_v4l2_close,
1746	.read = vb2_fop_read,
1747	.poll = vb2_fop_poll,
1748	.mmap = vb2_fop_mmap,
1749	.unlocked_ioctl = video_ioctl2,
1750	};
1751
1752	static const struct v4l2_ioctl_ops video_ioctl_ops = {
1753	.vidioc_querycap = vidioc_querycap,
1754	.vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1755	.vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1756	.vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1757	.vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1758	.vidioc_g_fmt_vbi_cap = vidioc_g_fmt_vbi_cap,
1759	.vidioc_try_fmt_vbi_cap = vidioc_g_fmt_vbi_cap,
1760	.vidioc_s_fmt_vbi_cap = vidioc_g_fmt_vbi_cap,
1761	.vidioc_enumaudio = vidioc_enumaudio,
1762	.vidioc_g_audio = vidioc_g_audio,
1763	.vidioc_s_audio = vidioc_s_audio,
1764	.vidioc_g_pixelaspect = vidioc_g_pixelaspect,
1765	.vidioc_g_selection = vidioc_g_selection,
1766
1767	.vidioc_reqbufs = vb2_ioctl_reqbufs,
1768	.vidioc_create_bufs = vb2_ioctl_create_bufs,
1769	.vidioc_prepare_buf = vb2_ioctl_prepare_buf,
1770	.vidioc_querybuf = vb2_ioctl_querybuf,
1771	.vidioc_qbuf = vb2_ioctl_qbuf,
1772	.vidioc_dqbuf = vb2_ioctl_dqbuf,
1773	.vidioc_expbuf = vb2_ioctl_expbuf,
1774
1775	.vidioc_s_std = vidioc_s_std,
1776	.vidioc_g_std = vidioc_g_std,
1777	.vidioc_enum_input = vidioc_enum_input,
1778	.vidioc_g_input = vidioc_g_input,
1779	.vidioc_s_input = vidioc_s_input,
1780
1781	.vidioc_streamon = vb2_ioctl_streamon,
1782	.vidioc_streamoff = vb2_ioctl_streamoff,
1783
1784	.vidioc_g_tuner = vidioc_g_tuner,
1785	.vidioc_s_tuner = vidioc_s_tuner,
1786	.vidioc_g_frequency = vidioc_g_frequency,
1787	.vidioc_s_frequency = vidioc_s_frequency,
1788	#ifdef CONFIG_VIDEO_ADV_DEBUG
1789	.vidioc_g_register = vidioc_g_register,
1790	.vidioc_s_register = vidioc_s_register,
1791	#endif
1792	.vidioc_log_status = vidioc_log_status,
1793	.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1794	.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1795	};
1796
1797	static const struct video_device au0828_video_template = {
1798	.fops = &au0828_v4l_fops,
1799	.release = video_device_release_empty,
1800	.ioctl_ops = &video_ioctl_ops,
1801	.tvnorms = V4L2_STD_NTSC_M | V4L2_STD_PAL_M,
1802	};
1803
1804	static int au0828_vb2_setup(struct au0828_dev *dev)
1805	{
1806	int rc;
1807	struct vb2_queue *q;
1808
1809	/* Setup Videobuf2 for Video capture */
1810	q = &dev->vb_vidq;
1811	q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1812	q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1813	q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1814	q->drv_priv = dev;
1815	q->buf_struct_size = sizeof(struct au0828_buffer);
1816	q->ops = &au0828_video_qops;
1817	q->mem_ops = &vb2_vmalloc_memops;
1818
1819	rc = vb2_queue_init(q);
1820	if (rc < 0)
1821	return rc;
1822
1823	/* Setup Videobuf2 for VBI capture */
1824	q = &dev->vb_vbiq;
1825	q->type = V4L2_BUF_TYPE_VBI_CAPTURE;
1826	q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1827	q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1828	q->drv_priv = dev;
1829	q->buf_struct_size = sizeof(struct au0828_buffer);
1830	q->ops = &au0828_vbi_qops;
1831	q->mem_ops = &vb2_vmalloc_memops;
1832
1833	rc = vb2_queue_init(q);
1834	if (rc < 0)
1835	return rc;
1836
1837	return 0;
1838	}
1839
1840	static void au0828_analog_create_entities(struct au0828_dev *dev)
1841	{
1842	#if defined(CONFIG_MEDIA_CONTROLLER)
1843	static const char * const inames[] = {
1844	[AU0828_VMUX_COMPOSITE] = "Composite",
1845	[AU0828_VMUX_SVIDEO] = "S-Video",
1846	[AU0828_VMUX_CABLE] = "Cable TV",
1847	[AU0828_VMUX_TELEVISION] = "Television",
1848	[AU0828_VMUX_DVB] = "DVB",
1849	};
1850	int ret, i;
1851
1852	/* Initialize Video and VBI pads */
1853	dev->video_pad.flags = MEDIA_PAD_FL_SINK;
1854	ret = media_entity_pads_init(entity: &dev->vdev.entity, num_pads: 1, pads: &dev->video_pad);
1855	if (ret < 0)
1856	pr_err("failed to initialize video media entity!\n");
1857
1858	dev->vbi_pad.flags = MEDIA_PAD_FL_SINK;
1859	ret = media_entity_pads_init(entity: &dev->vbi_dev.entity, num_pads: 1, pads: &dev->vbi_pad);
1860	if (ret < 0)
1861	pr_err("failed to initialize vbi media entity!\n");
1862
1863	/* Create entities for each input connector */
1864	for (i = 0; i < AU0828_MAX_INPUT; i++) {
1865	struct media_entity *ent = &dev->input_ent[i];
1866
1867	if (AUVI_INPUT(i).type == AU0828_VMUX_UNDEFINED)
1868	break;
1869
1870	ent->name = inames[AUVI_INPUT(i).type];
1871	ent->flags = MEDIA_ENT_FL_CONNECTOR;
1872	dev->input_pad[i].flags = MEDIA_PAD_FL_SOURCE;
1873
1874	switch (AUVI_INPUT(i).type) {
1875	case AU0828_VMUX_COMPOSITE:
1876	ent->function = MEDIA_ENT_F_CONN_COMPOSITE;
1877	break;
1878	case AU0828_VMUX_SVIDEO:
1879	ent->function = MEDIA_ENT_F_CONN_SVIDEO;
1880	break;
1881	case AU0828_VMUX_CABLE:
1882	case AU0828_VMUX_TELEVISION:
1883	case AU0828_VMUX_DVB:
1884	default: /* Just to shut up a warning */
1885	ent->function = MEDIA_ENT_F_CONN_RF;
1886	break;
1887	}
1888
1889	ret = media_entity_pads_init(entity: ent, num_pads: 1, pads: &dev->input_pad[i]);
1890	if (ret < 0)
1891	pr_err("failed to initialize input pad[%d]!\n", i);
1892
1893	ret = media_device_register_entity(mdev: dev->media_dev, entity: ent);
1894	if (ret < 0)
1895	pr_err("failed to register input entity %d!\n", i);
1896	}
1897	#endif
1898	}
1899
1900	/**************************************************************************/
1901
1902	int au0828_analog_register(struct au0828_dev *dev,
1903	struct usb_interface *interface)
1904	{
1905	int retval = -ENOMEM;
1906	struct usb_host_interface *iface_desc;
1907	struct usb_endpoint_descriptor *endpoint;
1908	int i, ret;
1909
1910	dprintk(1, "au0828_analog_register called for intf#%d!\n",
1911	interface->cur_altsetting->desc.bInterfaceNumber);
1912
1913	/* No analog TV */
1914	if (AUVI_INPUT(0).type == AU0828_VMUX_UNDEFINED)
1915	return 0;
1916
1917	/* set au0828 usb interface0 to as5 */
1918	retval = usb_set_interface(dev: dev->usbdev,
1919	ifnum: interface->cur_altsetting->desc.bInterfaceNumber, alternate: 5);
1920	if (retval != 0) {
1921	pr_info("Failure setting usb interface0 to as5\n");
1922	return retval;
1923	}
1924
1925	/* Figure out which endpoint has the isoc interface */
1926	iface_desc = interface->cur_altsetting;
1927	for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
1928	endpoint = &iface_desc->endpoint[i].desc;
1929	if (((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
1930	== USB_DIR_IN) &&
1931	((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
1932	== USB_ENDPOINT_XFER_ISOC)) {
1933
1934	/* we find our isoc in endpoint */
1935	u16 tmp = le16_to_cpu(endpoint->wMaxPacketSize);
1936	dev->max_pkt_size = (tmp & 0x07ff) *
1937	(((tmp & 0x1800) >> 11) + 1);
1938	dev->isoc_in_endpointaddr = endpoint->bEndpointAddress;
1939	dprintk(1,
1940	"Found isoc endpoint 0x%02x, max size = %d\n",
1941	dev->isoc_in_endpointaddr, dev->max_pkt_size);
1942	}
1943	}
1944	if (!(dev->isoc_in_endpointaddr)) {
1945	pr_info("Could not locate isoc endpoint\n");
1946	return -ENODEV;
1947	}
1948
1949	init_waitqueue_head(&dev->open);
1950	spin_lock_init(&dev->slock);
1951
1952	/* init video dma queues */
1953	INIT_LIST_HEAD(list: &dev->vidq.active);
1954	INIT_LIST_HEAD(list: &dev->vbiq.active);
1955
1956	timer_setup(&dev->vid_timeout, au0828_vid_buffer_timeout, 0);
1957	timer_setup(&dev->vbi_timeout, au0828_vbi_buffer_timeout, 0);
1958
1959	dev->width = NTSC_STD_W;
1960	dev->height = NTSC_STD_H;
1961	dev->field_size = dev->width * dev->height;
1962	dev->frame_size = dev->field_size << 1;
1963	dev->bytesperline = dev->width << 1;
1964	dev->vbi_width = 720;
1965	dev->vbi_height = 1;
1966	dev->ctrl_ainput = 0;
1967	dev->ctrl_freq = 960;
1968	dev->std = V4L2_STD_NTSC_M;
1969	/* Default input is TV Tuner */
1970	au0828_s_input(dev, index: 0);
1971
1972	mutex_init(&dev->vb_queue_lock);
1973	mutex_init(&dev->vb_vbi_queue_lock);
1974
1975	/* Fill the video capture device struct */
1976	dev->vdev = au0828_video_template;
1977	dev->vdev.v4l2_dev = &dev->v4l2_dev;
1978	dev->vdev.lock = &dev->lock;
1979	dev->vdev.queue = &dev->vb_vidq;
1980	dev->vdev.queue->lock = &dev->vb_queue_lock;
1981	dev->vdev.device_caps =
1982	V4L2_CAP_AUDIO | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING |
1983	V4L2_CAP_TUNER | V4L2_CAP_VIDEO_CAPTURE;
1984	strscpy(dev->vdev.name, "au0828a video", sizeof(dev->vdev.name));
1985
1986	/* Setup the VBI device */
1987	dev->vbi_dev = au0828_video_template;
1988	dev->vbi_dev.v4l2_dev = &dev->v4l2_dev;
1989	dev->vbi_dev.lock = &dev->lock;
1990	dev->vbi_dev.queue = &dev->vb_vbiq;
1991	dev->vbi_dev.queue->lock = &dev->vb_vbi_queue_lock;
1992	dev->vbi_dev.device_caps =
1993	V4L2_CAP_AUDIO | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING |
1994	V4L2_CAP_TUNER | V4L2_CAP_VBI_CAPTURE;
1995	strscpy(dev->vbi_dev.name, "au0828a vbi", sizeof(dev->vbi_dev.name));
1996
1997	/* Init entities at the Media Controller */
1998	au0828_analog_create_entities(dev);
1999
2000	/* initialize videobuf2 stuff */
2001	retval = au0828_vb2_setup(dev);
2002	if (retval != 0) {
2003	dprintk(1, "unable to setup videobuf2 queues (error = %d).\n",
2004	retval);
2005	return -ENODEV;
2006	}
2007
2008	/* Register the v4l2 device */
2009	video_set_drvdata(vdev: &dev->vdev, data: dev);
2010	retval = video_register_device(vdev: &dev->vdev, type: VFL_TYPE_VIDEO, nr: -1);
2011	if (retval != 0) {
2012	dprintk(1, "unable to register video device (error = %d).\n",
2013	retval);
2014	return -ENODEV;
2015	}
2016
2017	/* Register the vbi device */
2018	video_set_drvdata(vdev: &dev->vbi_dev, data: dev);
2019	retval = video_register_device(vdev: &dev->vbi_dev, type: VFL_TYPE_VBI, nr: -1);
2020	if (retval != 0) {
2021	dprintk(1, "unable to register vbi device (error = %d).\n",
2022	retval);
2023	ret = -ENODEV;
2024	goto err_reg_vbi_dev;
2025	}
2026
2027	#ifdef CONFIG_MEDIA_CONTROLLER
2028	retval = v4l2_mc_create_media_graph(mdev: dev->media_dev);
2029	if (retval) {
2030	pr_err("%s() au0282_dev_register failed to create graph\n",
2031	__func__);
2032	ret = -ENODEV;
2033	goto err_reg_vbi_dev;
2034	}
2035	#endif
2036
2037	dprintk(1, "%s completed!\n", __func__);
2038
2039	return 0;
2040
2041	err_reg_vbi_dev:
2042	vb2_video_unregister_device(vdev: &dev->vdev);
2043	return ret;
2044	}
2045
2046