cx25821-video.c

  1// SPDX-License-Identifier: GPL-2.0-or-later
  2/*
  3 *  Driver for the Conexant CX25821 PCIe bridge
  4 *
  5 *  Copyright (C) 2009 Conexant Systems Inc.
  6 *  Authors  <shu.lin@conexant.com>, <hiep.huynh@conexant.com>
  7 *  Based on Steven Toth <stoth@linuxtv.org> cx25821 driver
  8 *  Parts adapted/taken from Eduardo Moscoso Rubino
  9 *  Copyright (C) 2009 Eduardo Moscoso Rubino <moscoso@TopoLogica.com>
 10 */
 11
 12#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 13
 14#include "cx25821-video.h"
 15
 16MODULE_DESCRIPTION("v4l2 driver module for cx25821 based TV cards");
 17MODULE_AUTHOR("Hiep Huynh <hiep.huynh@conexant.com>");
 18MODULE_LICENSE("GPL");
 19
 20static unsigned int video_nr[] = {[0 ... (CX25821_MAXBOARDS - 1)] = UNSET };
 21
 22module_param_array(video_nr, int, NULL, 0444);
 23
 24MODULE_PARM_DESC(video_nr, "video device numbers");
 25
 26static unsigned int video_debug = VIDEO_DEBUG;
 27module_param(video_debug, int, 0644);
 28MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
 29
 30static unsigned int irq_debug;
 31module_param(irq_debug, int, 0644);
 32MODULE_PARM_DESC(irq_debug, "enable debug messages [IRQ handler]");
 33
 34#define FORMAT_FLAGS_PACKED       0x01
 35
 36static const struct cx25821_fmt formats[] = {
 37	{
 38		.fourcc = V4L2_PIX_FMT_Y41P,
 39		.depth = 12,
 40		.flags = FORMAT_FLAGS_PACKED,
 41	}, {
 42		.fourcc = V4L2_PIX_FMT_YUYV,
 43		.depth = 16,
 44		.flags = FORMAT_FLAGS_PACKED,
 45	},
 46};
 47
 48static const struct cx25821_fmt *cx25821_format_by_fourcc(unsigned int fourcc)
 49{
 50	unsigned int i;
 51
 52	for (i = 0; i < ARRAY_SIZE(formats); i++)
 53		if (formats[i].fourcc == fourcc)
 54			return formats + i;
 55	return NULL;
 56}
 57
 58int cx25821_start_video_dma(struct cx25821_dev *dev,
 59			    struct cx25821_dmaqueue *q,
 60			    struct cx25821_buffer *buf,
 61			    const struct sram_channel *channel)
 62{
 63	int tmp = 0;
 64
 65	/* setup fifo + format */
 66	cx25821_sram_channel_setup(dev, channel, buf->bpl, buf->risc.dma);
 67
 68	/* reset counter */
 69	cx_write(channel->gpcnt_ctl, 3);
 70
 71	/* enable irq */
 72	cx_set(PCI_INT_MSK, cx_read(PCI_INT_MSK) | (1 << channel->i));
 73	cx_set(channel->int_msk, 0x11);
 74
 75	/* start dma */
 76	cx_write(channel->dma_ctl, 0x11);	/* FIFO and RISC enable */
 77
 78	/* make sure upstream setting if any is reversed */
 79	tmp = cx_read(VID_CH_MODE_SEL);
 80	cx_write(VID_CH_MODE_SEL, tmp & 0xFFFFFE00);
 81
 82	return 0;
 83}
 84
 85int cx25821_video_irq(struct cx25821_dev *dev, int chan_num, u32 status)
 86{
 87	int handled = 0;
 88	u32 mask;
 89	const struct sram_channel *channel = dev->channels[chan_num].sram_channels;
 90
 91	mask = cx_read(channel->int_msk);
 92	if (0 == (status & mask))
 93		return handled;
 94
 95	cx_write(channel->int_stat, status);
 96
 97	/* risc op code error */
 98	if (status & (1 << 16)) {
 99		pr_warn("%s, %s: video risc op code error\n",
100			dev->name, channel->name);
101		cx_clear(channel->dma_ctl, 0x11);
102		cx25821_sram_channel_dump(dev, channel);
103	}
104
105	/* risc1 y */
106	if (status & FLD_VID_DST_RISC1) {
107		struct cx25821_dmaqueue *dmaq =
108			&dev->channels[channel->i].dma_vidq;
109		struct cx25821_buffer *buf;
110
111		spin_lock(&dev->slock);
112		if (!list_empty(&dmaq->active)) {
113			buf = list_entry(dmaq->active.next,
114					 struct cx25821_buffer, queue);
115
116			buf->vb.vb2_buf.timestamp = ktime_get_ns();
117			buf->vb.sequence = dmaq->count++;
118			list_del(&buf->queue);
119			vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_DONE);
120		}
121		spin_unlock(&dev->slock);
122		handled++;
123	}
124	return handled;
125}
126
127static int cx25821_queue_setup(struct vb2_queue *q,
128			   unsigned int *num_buffers, unsigned int *num_planes,
129			   unsigned int sizes[], struct device *alloc_devs[])
130{
131	struct cx25821_channel *chan = q->drv_priv;
132	unsigned size = (chan->fmt->depth * chan->width * chan->height) >> 3;
133
134	if (*num_planes)
135		return sizes[0] < size ? -EINVAL : 0;
136
137	*num_planes = 1;
138	sizes[0] = size;
139	return 0;
140}
141
142static int cx25821_buffer_prepare(struct vb2_buffer *vb)
143{
144	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
145	struct cx25821_channel *chan = vb->vb2_queue->drv_priv;
146	struct cx25821_dev *dev = chan->dev;
147	struct cx25821_buffer *buf =
148		container_of(vbuf, struct cx25821_buffer, vb);
149	struct sg_table *sgt = vb2_dma_sg_plane_desc(vb, 0);
150	u32 line0_offset;
151	int bpl_local = LINE_SIZE_D1;
152	int ret;
153
154	if (chan->pixel_formats == PIXEL_FRMT_411)
155		buf->bpl = (chan->fmt->depth * chan->width) >> 3;
156	else
157		buf->bpl = (chan->fmt->depth >> 3) * chan->width;
158
159	if (vb2_plane_size(vb, 0) < chan->height * buf->bpl)
160		return -EINVAL;
161	vb2_set_plane_payload(vb, 0, chan->height * buf->bpl);
162	buf->vb.field = chan->field;
163
164	if (chan->pixel_formats == PIXEL_FRMT_411) {
165		bpl_local = buf->bpl;
166	} else {
167		bpl_local = buf->bpl;   /* Default */
168
169		if (chan->use_cif_resolution) {
170			if (dev->tvnorm & V4L2_STD_625_50)
171				bpl_local = 352 << 1;
172			else
173				bpl_local = chan->cif_width << 1;
174		}
175	}
176
177	switch (chan->field) {
178	case V4L2_FIELD_TOP:
179		ret = cx25821_risc_buffer(dev->pci, &buf->risc,
180				sgt->sgl, 0, UNSET,
181				buf->bpl, 0, chan->height);
182		break;
183	case V4L2_FIELD_BOTTOM:
184		ret = cx25821_risc_buffer(dev->pci, &buf->risc,
185				sgt->sgl, UNSET, 0,
186				buf->bpl, 0, chan->height);
187		break;
188	case V4L2_FIELD_INTERLACED:
189		/* All other formats are top field first */
190		line0_offset = 0;
191		dprintk(1, "top field first\n");
192
193		ret = cx25821_risc_buffer(dev->pci, &buf->risc,
194				sgt->sgl, line0_offset,
195				bpl_local, bpl_local, bpl_local,
196				chan->height >> 1);
197		break;
198	case V4L2_FIELD_SEQ_TB:
199		ret = cx25821_risc_buffer(dev->pci, &buf->risc,
200				sgt->sgl,
201				0, buf->bpl * (chan->height >> 1),
202				buf->bpl, 0, chan->height >> 1);
203		break;
204	case V4L2_FIELD_SEQ_BT:
205		ret = cx25821_risc_buffer(dev->pci, &buf->risc,
206				sgt->sgl,
207				buf->bpl * (chan->height >> 1), 0,
208				buf->bpl, 0, chan->height >> 1);
209		break;
210	default:
211		WARN_ON(1);
212		ret = -EINVAL;
213		break;
214	}
215
216	dprintk(2, "[%p/%d] buffer_prep - %dx%d %dbpp 0x%08x - dma=0x%08lx\n",
217		buf, buf->vb.vb2_buf.index, chan->width, chan->height,
218		chan->fmt->depth, chan->fmt->fourcc,
219		(unsigned long)buf->risc.dma);
220
221	return ret;
222}
223
224static void cx25821_buffer_finish(struct vb2_buffer *vb)
225{
226	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
227	struct cx25821_buffer *buf =
228		container_of(vbuf, struct cx25821_buffer, vb);
229	struct cx25821_channel *chan = vb->vb2_queue->drv_priv;
230	struct cx25821_dev *dev = chan->dev;
231
232	cx25821_free_buffer(dev, buf);
233}
234
235static void cx25821_buffer_queue(struct vb2_buffer *vb)
236{
237	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
238	struct cx25821_buffer *buf =
239		container_of(vbuf, struct cx25821_buffer, vb);
240	struct cx25821_channel *chan = vb->vb2_queue->drv_priv;
241	struct cx25821_dev *dev = chan->dev;
242	struct cx25821_buffer *prev;
243	struct cx25821_dmaqueue *q = &dev->channels[chan->id].dma_vidq;
244
245	buf->risc.cpu[1] = cpu_to_le32(buf->risc.dma + 12);
246	buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_CNT_INC);
247	buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma + 12);
248	buf->risc.jmp[2] = cpu_to_le32(0); /* bits 63-32 */
249
250	if (list_empty(&q->active)) {
251		list_add_tail(&buf->queue, &q->active);
252	} else {
253		buf->risc.cpu[0] |= cpu_to_le32(RISC_IRQ1);
254		prev = list_entry(q->active.prev, struct cx25821_buffer,
255				queue);
256		list_add_tail(&buf->queue, &q->active);
257		prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
258	}
259}
260
261static int cx25821_start_streaming(struct vb2_queue *q, unsigned int count)
262{
263	struct cx25821_channel *chan = q->drv_priv;
264	struct cx25821_dev *dev = chan->dev;
265	struct cx25821_dmaqueue *dmaq = &dev->channels[chan->id].dma_vidq;
266	struct cx25821_buffer *buf = list_entry(dmaq->active.next,
267			struct cx25821_buffer, queue);
268
269	dmaq->count = 0;
270	cx25821_start_video_dma(dev, dmaq, buf, chan->sram_channels);
271	return 0;
272}
273
274static void cx25821_stop_streaming(struct vb2_queue *q)
275{
276	struct cx25821_channel *chan = q->drv_priv;
277	struct cx25821_dev *dev = chan->dev;
278	struct cx25821_dmaqueue *dmaq = &dev->channels[chan->id].dma_vidq;
279	unsigned long flags;
280
281	cx_write(chan->sram_channels->dma_ctl, 0); /* FIFO and RISC disable */
282	spin_lock_irqsave(&dev->slock, flags);
283	while (!list_empty(&dmaq->active)) {
284		struct cx25821_buffer *buf = list_entry(dmaq->active.next,
285			struct cx25821_buffer, queue);
286
287		list_del(&buf->queue);
288		vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
289	}
290	spin_unlock_irqrestore(&dev->slock, flags);
291}
292
293static const struct vb2_ops cx25821_video_qops = {
294	.queue_setup    = cx25821_queue_setup,
295	.buf_prepare  = cx25821_buffer_prepare,
296	.buf_finish = cx25821_buffer_finish,
297	.buf_queue    = cx25821_buffer_queue,
298	.start_streaming = cx25821_start_streaming,
299	.stop_streaming = cx25821_stop_streaming,
300};
301
302/* VIDEO IOCTLS */
303
304static int cx25821_vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
305			    struct v4l2_fmtdesc *f)
306{
307	if (unlikely(f->index >= ARRAY_SIZE(formats)))
308		return -EINVAL;
309
310	f->pixelformat = formats[f->index].fourcc;
311
312	return 0;
313}
314
315static int cx25821_vidioc_g_fmt_vid_cap(struct file *file, void *priv,
316				 struct v4l2_format *f)
317{
318	struct cx25821_channel *chan = video_drvdata(file);
319
320	f->fmt.pix.width = chan->width;
321	f->fmt.pix.height = chan->height;
322	f->fmt.pix.field = chan->field;
323	f->fmt.pix.pixelformat = chan->fmt->fourcc;
324	f->fmt.pix.bytesperline = (chan->width * chan->fmt->depth) >> 3;
325	f->fmt.pix.sizeimage = chan->height * f->fmt.pix.bytesperline;
326	f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
327
328	return 0;
329}
330
331static int cx25821_vidioc_try_fmt_vid_cap(struct file *file, void *priv,
332				   struct v4l2_format *f)
333{
334	struct cx25821_channel *chan = video_drvdata(file);
335	struct cx25821_dev *dev = chan->dev;
336	const struct cx25821_fmt *fmt;
337	enum v4l2_field field = f->fmt.pix.field;
338	unsigned int maxh;
339	unsigned w;
340
341	fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
342	if (NULL == fmt)
343		return -EINVAL;
344	maxh = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480;
345
346	w = f->fmt.pix.width;
347	if (field != V4L2_FIELD_BOTTOM)
348		field = V4L2_FIELD_TOP;
349	if (w < 352) {
350		w = 176;
351		f->fmt.pix.height = maxh / 4;
352	} else if (w < 720) {
353		w = 352;
354		f->fmt.pix.height = maxh / 2;
355	} else {
356		w = 720;
357		f->fmt.pix.height = maxh;
358		field = V4L2_FIELD_INTERLACED;
359	}
360	f->fmt.pix.field = field;
361	f->fmt.pix.width = w;
362	f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
363	f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
364	f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
365
366	return 0;
367}
368
369static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
370				struct v4l2_format *f)
371{
372	struct cx25821_channel *chan = video_drvdata(file);
373	struct cx25821_dev *dev = chan->dev;
374	int pix_format = PIXEL_FRMT_422;
375	int err;
376
377	err = cx25821_vidioc_try_fmt_vid_cap(file, priv, f);
378
379	if (0 != err)
380		return err;
381
382	chan->fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
383	chan->field = f->fmt.pix.field;
384	chan->width = f->fmt.pix.width;
385	chan->height = f->fmt.pix.height;
386
387	if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_Y41P)
388		pix_format = PIXEL_FRMT_411;
389	else
390		pix_format = PIXEL_FRMT_422;
391
392	cx25821_set_pixel_format(dev, SRAM_CH00, pix_format);
393
394	/* check if cif resolution */
395	if (chan->width == 320 || chan->width == 352)
396		chan->use_cif_resolution = 1;
397	else
398		chan->use_cif_resolution = 0;
399
400	chan->cif_width = chan->width;
401	medusa_set_resolution(dev, chan->width, SRAM_CH00);
402	return 0;
403}
404
405static int vidioc_log_status(struct file *file, void *priv)
406{
407	struct cx25821_channel *chan = video_drvdata(file);
408	struct cx25821_dev *dev = chan->dev;
409	const struct sram_channel *sram_ch = chan->sram_channels;
410	u32 tmp = 0;
411
412	tmp = cx_read(sram_ch->dma_ctl);
413	pr_info("Video input 0 is %s\n",
414		(tmp & 0x11) ? "streaming" : "stopped");
415	return 0;
416}
417
418
419static int cx25821_vidioc_querycap(struct file *file, void *priv,
420			    struct v4l2_capability *cap)
421{
422	struct cx25821_channel *chan = video_drvdata(file);
423	struct cx25821_dev *dev = chan->dev;
424
425	strscpy(cap->driver, "cx25821", sizeof(cap->driver));
426	strscpy(cap->card, cx25821_boards[dev->board].name, sizeof(cap->card));
427	sprintf(cap->bus_info, "PCIe:%s", pci_name(dev->pci));
428	cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT |
429			    V4L2_CAP_READWRITE | V4L2_CAP_STREAMING |
430			    V4L2_CAP_DEVICE_CAPS;
431	return 0;
432}
433
434static int cx25821_vidioc_g_std(struct file *file, void *priv, v4l2_std_id *tvnorms)
435{
436	struct cx25821_channel *chan = video_drvdata(file);
437
438	*tvnorms = chan->dev->tvnorm;
439	return 0;
440}
441
442static int cx25821_vidioc_s_std(struct file *file, void *priv,
443				v4l2_std_id tvnorms)
444{
445	struct cx25821_channel *chan = video_drvdata(file);
446	struct cx25821_dev *dev = chan->dev;
447
448	if (dev->tvnorm == tvnorms)
449		return 0;
450
451	dev->tvnorm = tvnorms;
452	chan->width = 720;
453	chan->height = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480;
454
455	medusa_set_videostandard(dev);
456
457	return 0;
458}
459
460static int cx25821_vidioc_enum_input(struct file *file, void *priv,
461			      struct v4l2_input *i)
462{
463	if (i->index)
464		return -EINVAL;
465
466	i->type = V4L2_INPUT_TYPE_CAMERA;
467	i->std = CX25821_NORMS;
468	strscpy(i->name, "Composite", sizeof(i->name));
469	return 0;
470}
471
472static int cx25821_vidioc_g_input(struct file *file, void *priv, unsigned int *i)
473{
474	*i = 0;
475	return 0;
476}
477
478static int cx25821_vidioc_s_input(struct file *file, void *priv, unsigned int i)
479{
480	return i ? -EINVAL : 0;
481}
482
483static int cx25821_s_ctrl(struct v4l2_ctrl *ctrl)
484{
485	struct cx25821_channel *chan =
486		container_of(ctrl->handler, struct cx25821_channel, hdl);
487	struct cx25821_dev *dev = chan->dev;
488
489	switch (ctrl->id) {
490	case V4L2_CID_BRIGHTNESS:
491		medusa_set_brightness(dev, ctrl->val, chan->id);
492		break;
493	case V4L2_CID_HUE:
494		medusa_set_hue(dev, ctrl->val, chan->id);
495		break;
496	case V4L2_CID_CONTRAST:
497		medusa_set_contrast(dev, ctrl->val, chan->id);
498		break;
499	case V4L2_CID_SATURATION:
500		medusa_set_saturation(dev, ctrl->val, chan->id);
501		break;
502	default:
503		return -EINVAL;
504	}
505	return 0;
506}
507
508static int cx25821_vidioc_enum_output(struct file *file, void *priv,
509			      struct v4l2_output *o)
510{
511	if (o->index)
512		return -EINVAL;
513
514	o->type = V4L2_INPUT_TYPE_CAMERA;
515	o->std = CX25821_NORMS;
516	strscpy(o->name, "Composite", sizeof(o->name));
517	return 0;
518}
519
520static int cx25821_vidioc_g_output(struct file *file, void *priv, unsigned int *o)
521{
522	*o = 0;
523	return 0;
524}
525
526static int cx25821_vidioc_s_output(struct file *file, void *priv, unsigned int o)
527{
528	return o ? -EINVAL : 0;
529}
530
531static int cx25821_vidioc_try_fmt_vid_out(struct file *file, void *priv,
532				   struct v4l2_format *f)
533{
534	struct cx25821_channel *chan = video_drvdata(file);
535	struct cx25821_dev *dev = chan->dev;
536	const struct cx25821_fmt *fmt;
537
538	fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
539	if (NULL == fmt)
540		return -EINVAL;
541	f->fmt.pix.width = 720;
542	f->fmt.pix.height = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480;
543	f->fmt.pix.field = V4L2_FIELD_INTERLACED;
544	f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
545	f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
546	f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
547	return 0;
548}
549
550static int vidioc_s_fmt_vid_out(struct file *file, void *priv,
551				struct v4l2_format *f)
552{
553	struct cx25821_channel *chan = video_drvdata(file);
554	int err;
555
556	err = cx25821_vidioc_try_fmt_vid_out(file, priv, f);
557
558	if (0 != err)
559		return err;
560
561	chan->fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
562	chan->field = f->fmt.pix.field;
563	chan->width = f->fmt.pix.width;
564	chan->height = f->fmt.pix.height;
565	if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_Y41P)
566		chan->pixel_formats = PIXEL_FRMT_411;
567	else
568		chan->pixel_formats = PIXEL_FRMT_422;
569	return 0;
570}
571
572static const struct v4l2_ctrl_ops cx25821_ctrl_ops = {
573	.s_ctrl = cx25821_s_ctrl,
574};
575
576static const struct v4l2_file_operations video_fops = {
577	.owner = THIS_MODULE,
578	.open = v4l2_fh_open,
579	.release        = vb2_fop_release,
580	.read           = vb2_fop_read,
581	.poll		= vb2_fop_poll,
582	.unlocked_ioctl = video_ioctl2,
583	.mmap           = vb2_fop_mmap,
584};
585
586static const struct v4l2_ioctl_ops video_ioctl_ops = {
587	.vidioc_querycap = cx25821_vidioc_querycap,
588	.vidioc_enum_fmt_vid_cap = cx25821_vidioc_enum_fmt_vid_cap,
589	.vidioc_g_fmt_vid_cap = cx25821_vidioc_g_fmt_vid_cap,
590	.vidioc_try_fmt_vid_cap = cx25821_vidioc_try_fmt_vid_cap,
591	.vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
592	.vidioc_reqbufs       = vb2_ioctl_reqbufs,
593	.vidioc_prepare_buf   = vb2_ioctl_prepare_buf,
594	.vidioc_create_bufs   = vb2_ioctl_create_bufs,
595	.vidioc_querybuf      = vb2_ioctl_querybuf,
596	.vidioc_qbuf          = vb2_ioctl_qbuf,
597	.vidioc_dqbuf         = vb2_ioctl_dqbuf,
598	.vidioc_streamon      = vb2_ioctl_streamon,
599	.vidioc_streamoff     = vb2_ioctl_streamoff,
600	.vidioc_g_std = cx25821_vidioc_g_std,
601	.vidioc_s_std = cx25821_vidioc_s_std,
602	.vidioc_enum_input = cx25821_vidioc_enum_input,
603	.vidioc_g_input = cx25821_vidioc_g_input,
604	.vidioc_s_input = cx25821_vidioc_s_input,
605	.vidioc_log_status = vidioc_log_status,
606	.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
607	.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
608};
609
610static const struct video_device cx25821_video_device = {
611	.name = "cx25821-video",
612	.fops = &video_fops,
613	.release = video_device_release_empty,
614	.minor = -1,
615	.ioctl_ops = &video_ioctl_ops,
616	.tvnorms = CX25821_NORMS,
617	.device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE |
618		       V4L2_CAP_STREAMING,
619};
620
621static const struct v4l2_file_operations video_out_fops = {
622	.owner = THIS_MODULE,
623	.open = v4l2_fh_open,
624	.release        = vb2_fop_release,
625	.write          = vb2_fop_write,
626	.poll		= vb2_fop_poll,
627	.unlocked_ioctl = video_ioctl2,
628	.mmap           = vb2_fop_mmap,
629};
630
631static const struct v4l2_ioctl_ops video_out_ioctl_ops = {
632	.vidioc_querycap = cx25821_vidioc_querycap,
633	.vidioc_enum_fmt_vid_out = cx25821_vidioc_enum_fmt_vid_cap,
634	.vidioc_g_fmt_vid_out = cx25821_vidioc_g_fmt_vid_cap,
635	.vidioc_try_fmt_vid_out = cx25821_vidioc_try_fmt_vid_out,
636	.vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out,
637	.vidioc_g_std = cx25821_vidioc_g_std,
638	.vidioc_s_std = cx25821_vidioc_s_std,
639	.vidioc_enum_output = cx25821_vidioc_enum_output,
640	.vidioc_g_output = cx25821_vidioc_g_output,
641	.vidioc_s_output = cx25821_vidioc_s_output,
642	.vidioc_log_status = vidioc_log_status,
643};
644
645static const struct video_device cx25821_video_out_device = {
646	.name = "cx25821-video",
647	.fops = &video_out_fops,
648	.release = video_device_release_empty,
649	.minor = -1,
650	.ioctl_ops = &video_out_ioctl_ops,
651	.tvnorms = CX25821_NORMS,
652	.device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_READWRITE,
653};
654
655void cx25821_video_unregister(struct cx25821_dev *dev, int chan_num)
656{
657	cx_clear(PCI_INT_MSK, 1);
658
659	if (video_is_registered(&dev->channels[chan_num].vdev)) {
660		video_unregister_device(&dev->channels[chan_num].vdev);
661		v4l2_ctrl_handler_free(&dev->channels[chan_num].hdl);
662	}
663}
664
665int cx25821_video_register(struct cx25821_dev *dev)
666{
667	int err;
668	int i;
669
670	/* initial device configuration */
671	dev->tvnorm = V4L2_STD_NTSC_M;
672
673	spin_lock_init(&dev->slock);
674
675	for (i = 0; i < MAX_VID_CAP_CHANNEL_NUM - 1; ++i) {
676		struct cx25821_channel *chan = &dev->channels[i];
677		struct video_device *vdev = &chan->vdev;
678		struct v4l2_ctrl_handler *hdl = &chan->hdl;
679		struct vb2_queue *q;
680		bool is_output = i > SRAM_CH08;
681
682		if (i == SRAM_CH08) /* audio channel */
683			continue;
684
685		if (!is_output) {
686			v4l2_ctrl_handler_init(hdl, 4);
687			v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops,
688					V4L2_CID_BRIGHTNESS, 0, 10000, 1, 6200);
689			v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops,
690					V4L2_CID_CONTRAST, 0, 10000, 1, 5000);
691			v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops,
692					V4L2_CID_SATURATION, 0, 10000, 1, 5000);
693			v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops,
694					V4L2_CID_HUE, 0, 10000, 1, 5000);
695			if (hdl->error) {
696				err = hdl->error;
697				goto fail_unreg;
698			}
699			err = v4l2_ctrl_handler_setup(hdl);
700			if (err)
701				goto fail_unreg;
702		} else {
703			chan->out = &dev->vid_out_data[i - SRAM_CH09];
704			chan->out->chan = chan;
705		}
706
707		chan->sram_channels = &cx25821_sram_channels[i];
708		chan->width = 720;
709		chan->field = V4L2_FIELD_INTERLACED;
710		if (dev->tvnorm & V4L2_STD_625_50)
711			chan->height = 576;
712		else
713			chan->height = 480;
714
715		if (chan->pixel_formats == PIXEL_FRMT_411)
716			chan->fmt = cx25821_format_by_fourcc(V4L2_PIX_FMT_Y41P);
717		else
718			chan->fmt = cx25821_format_by_fourcc(V4L2_PIX_FMT_YUYV);
719
720		cx_write(chan->sram_channels->int_stat, 0xffffffff);
721
722		INIT_LIST_HEAD(&chan->dma_vidq.active);
723
724		q = &chan->vidq;
725
726		q->type = is_output ? V4L2_BUF_TYPE_VIDEO_OUTPUT :
727				      V4L2_BUF_TYPE_VIDEO_CAPTURE;
728		q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
729		q->io_modes |= is_output ? VB2_WRITE : VB2_READ;
730		q->gfp_flags = GFP_DMA32;
731		q->min_queued_buffers = 2;
732		q->drv_priv = chan;
733		q->buf_struct_size = sizeof(struct cx25821_buffer);
734		q->ops = &cx25821_video_qops;
735		q->mem_ops = &vb2_dma_sg_memops;
736		q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
737		q->lock = &dev->lock;
738		q->dev = &dev->pci->dev;
739
740		if (!is_output) {
741			err = vb2_queue_init(q);
742			if (err < 0)
743				goto fail_unreg;
744		}
745
746		/* register v4l devices */
747		*vdev = is_output ? cx25821_video_out_device : cx25821_video_device;
748		vdev->v4l2_dev = &dev->v4l2_dev;
749		if (!is_output)
750			vdev->ctrl_handler = hdl;
751		else
752			vdev->vfl_dir = VFL_DIR_TX;
753		vdev->lock = &dev->lock;
754		vdev->queue = q;
755		snprintf(vdev->name, sizeof(vdev->name), "%s #%d", dev->name, i);
756		video_set_drvdata(vdev, chan);
757
758		err = video_register_device(vdev, VFL_TYPE_VIDEO,
759					    video_nr[dev->nr]);
760
761		if (err < 0)
762			goto fail_unreg;
763	}
764
765	/* set PCI interrupt */
766	cx_set(PCI_INT_MSK, 0xff);
767
768	return 0;
769
770fail_unreg:
771	while (i >= 0)
772		cx25821_video_unregister(dev, i--);
773	return err;
774}