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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
[cris-mirror.git] / drivers / media / pci / cx25821 / cx25821-video.c
blobdbaf42ec26cd8efd4076a53419262fc0855f12fc
1 /*
2 * Driver for the Conexant CX25821 PCIe bridge
3 *
4 * Copyright (C) 2009 Conexant Systems Inc.
5 * Authors <shu.lin@conexant.com>, <hiep.huynh@conexant.com>
6 * Based on Steven Toth <stoth@linuxtv.org> cx25821 driver
7 * Parts adapted/taken from Eduardo Moscoso Rubino
8 * Copyright (C) 2009 Eduardo Moscoso Rubino <moscoso@TopoLogica.com>
9 *
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 *
20 * GNU General Public License for more details.
21 */
22
23 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
24
25 #include "cx25821-video.h"
26
27 MODULE_DESCRIPTION("v4l2 driver module for cx25821 based TV cards");
28 MODULE_AUTHOR("Hiep Huynh <hiep.huynh@conexant.com>");
29 MODULE_LICENSE("GPL");
30
31 static unsigned int video_nr[] = {[0 ... (CX25821_MAXBOARDS - 1)] = UNSET };
32
33 module_param_array(video_nr, int, NULL, 0444);
34
35 MODULE_PARM_DESC(video_nr, "video device numbers");
36
37 static unsigned int video_debug = VIDEO_DEBUG;
38 module_param(video_debug, int, 0644);
39 MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
40
41 static unsigned int irq_debug;
42 module_param(irq_debug, int, 0644);
43 MODULE_PARM_DESC(irq_debug, "enable debug messages [IRQ handler]");
44
45 #define FORMAT_FLAGS_PACKED 0x01
46
47 static const struct cx25821_fmt formats[] = {
48 {
49 .name = "4:1:1, packed, Y41P",
50 .fourcc = V4L2_PIX_FMT_Y41P,
51 .depth = 12,
52 .flags = FORMAT_FLAGS_PACKED,
53 }, {
54 .name = "4:2:2, packed, YUYV",
55 .fourcc = V4L2_PIX_FMT_YUYV,
56 .depth = 16,
57 .flags = FORMAT_FLAGS_PACKED,
58 },
59 };
60
61 static const struct cx25821_fmt *cx25821_format_by_fourcc(unsigned int fourcc)
62 {
63 unsigned int i;
64
65 for (i = 0; i < ARRAY_SIZE(formats); i++)
66 if (formats[i].fourcc == fourcc)
67 return formats + i;
68 return NULL;
69 }
70
71 int cx25821_start_video_dma(struct cx25821_dev *dev,
72 struct cx25821_dmaqueue *q,
73 struct cx25821_buffer *buf,
74 const struct sram_channel *channel)
75 {
76 int tmp = 0;
77
78 /* setup fifo + format */
79 cx25821_sram_channel_setup(dev, channel, buf->bpl, buf->risc.dma);
80
81 /* reset counter */
82 cx_write(channel->gpcnt_ctl, 3);
83
84 /* enable irq */
85 cx_set(PCI_INT_MSK, cx_read(PCI_INT_MSK) | (1 << channel->i));
86 cx_set(channel->int_msk, 0x11);
87
88 /* start dma */
89 cx_write(channel->dma_ctl, 0x11); /* FIFO and RISC enable */
90
91 /* make sure upstream setting if any is reversed */
92 tmp = cx_read(VID_CH_MODE_SEL);
93 cx_write(VID_CH_MODE_SEL, tmp & 0xFFFFFE00);
94
95 return 0;
96 }
97
98 int cx25821_video_irq(struct cx25821_dev *dev, int chan_num, u32 status)
99 {
100 int handled = 0;
101 u32 mask;
102 const struct sram_channel *channel = dev->channels[chan_num].sram_channels;
103
104 mask = cx_read(channel->int_msk);
105 if (0 == (status & mask))
106 return handled;
107
108 cx_write(channel->int_stat, status);
109
110 /* risc op code error */
111 if (status & (1 << 16)) {
112 pr_warn("%s, %s: video risc op code error\n",
113 dev->name, channel->name);
114 cx_clear(channel->dma_ctl, 0x11);
115 cx25821_sram_channel_dump(dev, channel);
116 }
117
118 /* risc1 y */
119 if (status & FLD_VID_DST_RISC1) {
120 struct cx25821_dmaqueue *dmaq =
121 &dev->channels[channel->i].dma_vidq;
122 struct cx25821_buffer *buf;
123
124 spin_lock(&dev->slock);
125 if (!list_empty(&dmaq->active)) {
126 buf = list_entry(dmaq->active.next,
127 struct cx25821_buffer, queue);
128
129 buf->vb.vb2_buf.timestamp = ktime_get_ns();
130 buf->vb.sequence = dmaq->count++;
131 list_del(&buf->queue);
132 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_DONE);
133 }
134 spin_unlock(&dev->slock);
135 handled++;
136 }
137 return handled;
138 }
139
140 static int cx25821_queue_setup(struct vb2_queue *q,
141 unsigned int *num_buffers, unsigned int *num_planes,
142 unsigned int sizes[], struct device *alloc_devs[])
143 {
144 struct cx25821_channel *chan = q->drv_priv;
145 unsigned size = (chan->fmt->depth * chan->width * chan->height) >> 3;
146
147 if (*num_planes)
148 return sizes[0] < size ? -EINVAL : 0;
149
150 *num_planes = 1;
151 sizes[0] = size;
152 return 0;
153 }
154
155 static int cx25821_buffer_prepare(struct vb2_buffer *vb)
156 {
157 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
158 struct cx25821_channel *chan = vb->vb2_queue->drv_priv;
159 struct cx25821_dev *dev = chan->dev;
160 struct cx25821_buffer *buf =
161 container_of(vbuf, struct cx25821_buffer, vb);
162 struct sg_table *sgt = vb2_dma_sg_plane_desc(vb, 0);
163 u32 line0_offset;
164 int bpl_local = LINE_SIZE_D1;
165 int ret;
166
167 if (chan->pixel_formats == PIXEL_FRMT_411)
168 buf->bpl = (chan->fmt->depth * chan->width) >> 3;
169 else
170 buf->bpl = (chan->fmt->depth >> 3) * chan->width;
171
172 if (vb2_plane_size(vb, 0) < chan->height * buf->bpl)
173 return -EINVAL;
174 vb2_set_plane_payload(vb, 0, chan->height * buf->bpl);
175 buf->vb.field = chan->field;
176
177 if (chan->pixel_formats == PIXEL_FRMT_411) {
178 bpl_local = buf->bpl;
179 } else {
180 bpl_local = buf->bpl; /* Default */
181
182 if (chan->use_cif_resolution) {
183 if (dev->tvnorm & V4L2_STD_625_50)
184 bpl_local = 352 << 1;
185 else
186 bpl_local = chan->cif_width << 1;
187 }
188 }
189
190 switch (chan->field) {
191 case V4L2_FIELD_TOP:
192 ret = cx25821_risc_buffer(dev->pci, &buf->risc,
193 sgt->sgl, 0, UNSET,
194 buf->bpl, 0, chan->height);
195 break;
196 case V4L2_FIELD_BOTTOM:
197 ret = cx25821_risc_buffer(dev->pci, &buf->risc,
198 sgt->sgl, UNSET, 0,
199 buf->bpl, 0, chan->height);
200 break;
201 case V4L2_FIELD_INTERLACED:
202 /* All other formats are top field first */
203 line0_offset = 0;
204 dprintk(1, "top field first\n");
205
206 ret = cx25821_risc_buffer(dev->pci, &buf->risc,
207 sgt->sgl, line0_offset,
208 bpl_local, bpl_local, bpl_local,
209 chan->height >> 1);
210 break;
211 case V4L2_FIELD_SEQ_TB:
212 ret = cx25821_risc_buffer(dev->pci, &buf->risc,
213 sgt->sgl,
214 0, buf->bpl * (chan->height >> 1),
215 buf->bpl, 0, chan->height >> 1);
216 break;
217 case V4L2_FIELD_SEQ_BT:
218 ret = cx25821_risc_buffer(dev->pci, &buf->risc,
219 sgt->sgl,
220 buf->bpl * (chan->height >> 1), 0,
221 buf->bpl, 0, chan->height >> 1);
222 break;
223 default:
224 WARN_ON(1);
225 ret = -EINVAL;
226 break;
227 }
228
229 dprintk(2, "[%p/%d] buffer_prep - %dx%d %dbpp \"%s\" - dma=0x%08lx\n",
230 buf, buf->vb.vb2_buf.index, chan->width, chan->height,
231 chan->fmt->depth, chan->fmt->name,
232 (unsigned long)buf->risc.dma);
233
234 return ret;
235 }
236
237 static void cx25821_buffer_finish(struct vb2_buffer *vb)
238 {
239 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
240 struct cx25821_buffer *buf =
241 container_of(vbuf, struct cx25821_buffer, vb);
242 struct cx25821_channel *chan = vb->vb2_queue->drv_priv;
243 struct cx25821_dev *dev = chan->dev;
244
245 cx25821_free_buffer(dev, buf);
246 }
247
248 static void cx25821_buffer_queue(struct vb2_buffer *vb)
249 {
250 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
251 struct cx25821_buffer *buf =
252 container_of(vbuf, struct cx25821_buffer, vb);
253 struct cx25821_channel *chan = vb->vb2_queue->drv_priv;
254 struct cx25821_dev *dev = chan->dev;
255 struct cx25821_buffer *prev;
256 struct cx25821_dmaqueue *q = &dev->channels[chan->id].dma_vidq;
257
258 buf->risc.cpu[1] = cpu_to_le32(buf->risc.dma + 12);
259 buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_CNT_INC);
260 buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma + 12);
261 buf->risc.jmp[2] = cpu_to_le32(0); /* bits 63-32 */
262
263 if (list_empty(&q->active)) {
264 list_add_tail(&buf->queue, &q->active);
265 } else {
266 buf->risc.cpu[0] |= cpu_to_le32(RISC_IRQ1);
267 prev = list_entry(q->active.prev, struct cx25821_buffer,
268 queue);
269 list_add_tail(&buf->queue, &q->active);
270 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
271 }
272 }
273
274 static int cx25821_start_streaming(struct vb2_queue *q, unsigned int count)
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 struct cx25821_buffer *buf = list_entry(dmaq->active.next,
280 struct cx25821_buffer, queue);
281
282 dmaq->count = 0;
283 cx25821_start_video_dma(dev, dmaq, buf, chan->sram_channels);
284 return 0;
285 }
286
287 static void cx25821_stop_streaming(struct vb2_queue *q)
288 {
289 struct cx25821_channel *chan = q->drv_priv;
290 struct cx25821_dev *dev = chan->dev;
291 struct cx25821_dmaqueue *dmaq = &dev->channels[chan->id].dma_vidq;
292 unsigned long flags;
293
294 cx_write(chan->sram_channels->dma_ctl, 0); /* FIFO and RISC disable */
295 spin_lock_irqsave(&dev->slock, flags);
296 while (!list_empty(&dmaq->active)) {
297 struct cx25821_buffer *buf = list_entry(dmaq->active.next,
298 struct cx25821_buffer, queue);
299
300 list_del(&buf->queue);
301 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
302 }
303 spin_unlock_irqrestore(&dev->slock, flags);
304 }
305
306 static const struct vb2_ops cx25821_video_qops = {
307 .queue_setup = cx25821_queue_setup,
308 .buf_prepare = cx25821_buffer_prepare,
309 .buf_finish = cx25821_buffer_finish,
310 .buf_queue = cx25821_buffer_queue,
311 .wait_prepare = vb2_ops_wait_prepare,
312 .wait_finish = vb2_ops_wait_finish,
313 .start_streaming = cx25821_start_streaming,
314 .stop_streaming = cx25821_stop_streaming,
315 };
316
317 /* VIDEO IOCTLS */
318
319 static int cx25821_vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
320 struct v4l2_fmtdesc *f)
321 {
322 if (unlikely(f->index >= ARRAY_SIZE(formats)))
323 return -EINVAL;
324
325 strlcpy(f->description, formats[f->index].name, sizeof(f->description));
326 f->pixelformat = formats[f->index].fourcc;
327
328 return 0;
329 }
330
331 static int cx25821_vidioc_g_fmt_vid_cap(struct file *file, void *priv,
332 struct v4l2_format *f)
333 {
334 struct cx25821_channel *chan = video_drvdata(file);
335
336 f->fmt.pix.width = chan->width;
337 f->fmt.pix.height = chan->height;
338 f->fmt.pix.field = chan->field;
339 f->fmt.pix.pixelformat = chan->fmt->fourcc;
340 f->fmt.pix.bytesperline = (chan->width * chan->fmt->depth) >> 3;
341 f->fmt.pix.sizeimage = chan->height * f->fmt.pix.bytesperline;
342 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
343
344 return 0;
345 }
346
347 static int cx25821_vidioc_try_fmt_vid_cap(struct file *file, void *priv,
348 struct v4l2_format *f)
349 {
350 struct cx25821_channel *chan = video_drvdata(file);
351 struct cx25821_dev *dev = chan->dev;
352 const struct cx25821_fmt *fmt;
353 enum v4l2_field field = f->fmt.pix.field;
354 unsigned int maxh;
355 unsigned w;
356
357 fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
358 if (NULL == fmt)
359 return -EINVAL;
360 maxh = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480;
361
362 w = f->fmt.pix.width;
363 if (field != V4L2_FIELD_BOTTOM)
364 field = V4L2_FIELD_TOP;
365 if (w < 352) {
366 w = 176;
367 f->fmt.pix.height = maxh / 4;
368 } else if (w < 720) {
369 w = 352;
370 f->fmt.pix.height = maxh / 2;
371 } else {
372 w = 720;
373 f->fmt.pix.height = maxh;
374 field = V4L2_FIELD_INTERLACED;
375 }
376 f->fmt.pix.field = field;
377 f->fmt.pix.width = w;
378 f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
379 f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
380 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
381
382 return 0;
383 }
384
385 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
386 struct v4l2_format *f)
387 {
388 struct cx25821_channel *chan = video_drvdata(file);
389 struct cx25821_dev *dev = chan->dev;
390 int pix_format = PIXEL_FRMT_422;
391 int err;
392
393 err = cx25821_vidioc_try_fmt_vid_cap(file, priv, f);
394
395 if (0 != err)
396 return err;
397
398 chan->fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
399 chan->field = f->fmt.pix.field;
400 chan->width = f->fmt.pix.width;
401 chan->height = f->fmt.pix.height;
402
403 if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_Y41P)
404 pix_format = PIXEL_FRMT_411;
405 else
406 pix_format = PIXEL_FRMT_422;
407
408 cx25821_set_pixel_format(dev, SRAM_CH00, pix_format);
409
410 /* check if cif resolution */
411 if (chan->width == 320 || chan->width == 352)
412 chan->use_cif_resolution = 1;
413 else
414 chan->use_cif_resolution = 0;
415
416 chan->cif_width = chan->width;
417 medusa_set_resolution(dev, chan->width, SRAM_CH00);
418 return 0;
419 }
420
421 static int vidioc_log_status(struct file *file, void *priv)
422 {
423 struct cx25821_channel *chan = video_drvdata(file);
424 struct cx25821_dev *dev = chan->dev;
425 const struct sram_channel *sram_ch = chan->sram_channels;
426 u32 tmp = 0;
427
428 tmp = cx_read(sram_ch->dma_ctl);
429 pr_info("Video input 0 is %s\n",
430 (tmp & 0x11) ? "streaming" : "stopped");
431 return 0;
432 }
433
434
435 static int cx25821_vidioc_querycap(struct file *file, void *priv,
436 struct v4l2_capability *cap)
437 {
438 struct cx25821_channel *chan = video_drvdata(file);
439 struct cx25821_dev *dev = chan->dev;
440 const u32 cap_input = V4L2_CAP_VIDEO_CAPTURE |
441 V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
442 const u32 cap_output = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_READWRITE;
443
444 strcpy(cap->driver, "cx25821");
445 strlcpy(cap->card, cx25821_boards[dev->board].name, sizeof(cap->card));
446 sprintf(cap->bus_info, "PCIe:%s", pci_name(dev->pci));
447 if (chan->id >= VID_CHANNEL_NUM)
448 cap->device_caps = cap_output;
449 else
450 cap->device_caps = cap_input;
451 cap->capabilities = cap_input | cap_output | V4L2_CAP_DEVICE_CAPS;
452 return 0;
453 }
454
455 static int cx25821_vidioc_g_std(struct file *file, void *priv, v4l2_std_id *tvnorms)
456 {
457 struct cx25821_channel *chan = video_drvdata(file);
458
459 *tvnorms = chan->dev->tvnorm;
460 return 0;
461 }
462
463 static int cx25821_vidioc_s_std(struct file *file, void *priv,
464 v4l2_std_id tvnorms)
465 {
466 struct cx25821_channel *chan = video_drvdata(file);
467 struct cx25821_dev *dev = chan->dev;
468
469 if (dev->tvnorm == tvnorms)
470 return 0;
471
472 dev->tvnorm = tvnorms;
473 chan->width = 720;
474 chan->height = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480;
475
476 medusa_set_videostandard(dev);
477
478 return 0;
479 }
480
481 static int cx25821_vidioc_enum_input(struct file *file, void *priv,
482 struct v4l2_input *i)
483 {
484 if (i->index)
485 return -EINVAL;
486
487 i->type = V4L2_INPUT_TYPE_CAMERA;
488 i->std = CX25821_NORMS;
489 strcpy(i->name, "Composite");
490 return 0;
491 }
492
493 static int cx25821_vidioc_g_input(struct file *file, void *priv, unsigned int *i)
494 {
495 *i = 0;
496 return 0;
497 }
498
499 static int cx25821_vidioc_s_input(struct file *file, void *priv, unsigned int i)
500 {
501 return i ? -EINVAL : 0;
502 }
503
504 static int cx25821_s_ctrl(struct v4l2_ctrl *ctrl)
505 {
506 struct cx25821_channel *chan =
507 container_of(ctrl->handler, struct cx25821_channel, hdl);
508 struct cx25821_dev *dev = chan->dev;
509
510 switch (ctrl->id) {
511 case V4L2_CID_BRIGHTNESS:
512 medusa_set_brightness(dev, ctrl->val, chan->id);
513 break;
514 case V4L2_CID_HUE:
515 medusa_set_hue(dev, ctrl->val, chan->id);
516 break;
517 case V4L2_CID_CONTRAST:
518 medusa_set_contrast(dev, ctrl->val, chan->id);
519 break;
520 case V4L2_CID_SATURATION:
521 medusa_set_saturation(dev, ctrl->val, chan->id);
522 break;
523 default:
524 return -EINVAL;
525 }
526 return 0;
527 }
528
529 static int cx25821_vidioc_enum_output(struct file *file, void *priv,
530 struct v4l2_output *o)
531 {
532 if (o->index)
533 return -EINVAL;
534
535 o->type = V4L2_INPUT_TYPE_CAMERA;
536 o->std = CX25821_NORMS;
537 strcpy(o->name, "Composite");
538 return 0;
539 }
540
541 static int cx25821_vidioc_g_output(struct file *file, void *priv, unsigned int *o)
542 {
543 *o = 0;
544 return 0;
545 }
546
547 static int cx25821_vidioc_s_output(struct file *file, void *priv, unsigned int o)
548 {
549 return o ? -EINVAL : 0;
550 }
551
552 static int cx25821_vidioc_try_fmt_vid_out(struct file *file, void *priv,
553 struct v4l2_format *f)
554 {
555 struct cx25821_channel *chan = video_drvdata(file);
556 struct cx25821_dev *dev = chan->dev;
557 const struct cx25821_fmt *fmt;
558
559 fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
560 if (NULL == fmt)
561 return -EINVAL;
562 f->fmt.pix.width = 720;
563 f->fmt.pix.height = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480;
564 f->fmt.pix.field = V4L2_FIELD_INTERLACED;
565 f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
566 f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
567 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
568 return 0;
569 }
570
571 static int vidioc_s_fmt_vid_out(struct file *file, void *priv,
572 struct v4l2_format *f)
573 {
574 struct cx25821_channel *chan = video_drvdata(file);
575 int err;
576
577 err = cx25821_vidioc_try_fmt_vid_out(file, priv, f);
578
579 if (0 != err)
580 return err;
581
582 chan->fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
583 chan->field = f->fmt.pix.field;
584 chan->width = f->fmt.pix.width;
585 chan->height = f->fmt.pix.height;
586 if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_Y41P)
587 chan->pixel_formats = PIXEL_FRMT_411;
588 else
589 chan->pixel_formats = PIXEL_FRMT_422;
590 return 0;
591 }
592
593 static const struct v4l2_ctrl_ops cx25821_ctrl_ops = {
594 .s_ctrl = cx25821_s_ctrl,
595 };
596
597 static const struct v4l2_file_operations video_fops = {
598 .owner = THIS_MODULE,
599 .open = v4l2_fh_open,
600 .release = vb2_fop_release,
601 .read = vb2_fop_read,
602 .poll = vb2_fop_poll,
603 .unlocked_ioctl = video_ioctl2,
604 .mmap = vb2_fop_mmap,
605 };
606
607 static const struct v4l2_ioctl_ops video_ioctl_ops = {
608 .vidioc_querycap = cx25821_vidioc_querycap,
609 .vidioc_enum_fmt_vid_cap = cx25821_vidioc_enum_fmt_vid_cap,
610 .vidioc_g_fmt_vid_cap = cx25821_vidioc_g_fmt_vid_cap,
611 .vidioc_try_fmt_vid_cap = cx25821_vidioc_try_fmt_vid_cap,
612 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
613 .vidioc_reqbufs = vb2_ioctl_reqbufs,
614 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
615 .vidioc_create_bufs = vb2_ioctl_create_bufs,
616 .vidioc_querybuf = vb2_ioctl_querybuf,
617 .vidioc_qbuf = vb2_ioctl_qbuf,
618 .vidioc_dqbuf = vb2_ioctl_dqbuf,
619 .vidioc_streamon = vb2_ioctl_streamon,
620 .vidioc_streamoff = vb2_ioctl_streamoff,
621 .vidioc_g_std = cx25821_vidioc_g_std,
622 .vidioc_s_std = cx25821_vidioc_s_std,
623 .vidioc_enum_input = cx25821_vidioc_enum_input,
624 .vidioc_g_input = cx25821_vidioc_g_input,
625 .vidioc_s_input = cx25821_vidioc_s_input,
626 .vidioc_log_status = vidioc_log_status,
627 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
628 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
629 };
630
631 static const struct video_device cx25821_video_device = {
632 .name = "cx25821-video",
633 .fops = &video_fops,
634 .release = video_device_release_empty,
635 .minor = -1,
636 .ioctl_ops = &video_ioctl_ops,
637 .tvnorms = CX25821_NORMS,
638 };
639
640 static const struct v4l2_file_operations video_out_fops = {
641 .owner = THIS_MODULE,
642 .open = v4l2_fh_open,
643 .release = vb2_fop_release,
644 .write = vb2_fop_write,
645 .poll = vb2_fop_poll,
646 .unlocked_ioctl = video_ioctl2,
647 .mmap = vb2_fop_mmap,
648 };
649
650 static const struct v4l2_ioctl_ops video_out_ioctl_ops = {
651 .vidioc_querycap = cx25821_vidioc_querycap,
652 .vidioc_enum_fmt_vid_out = cx25821_vidioc_enum_fmt_vid_cap,
653 .vidioc_g_fmt_vid_out = cx25821_vidioc_g_fmt_vid_cap,
654 .vidioc_try_fmt_vid_out = cx25821_vidioc_try_fmt_vid_out,
655 .vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out,
656 .vidioc_g_std = cx25821_vidioc_g_std,
657 .vidioc_s_std = cx25821_vidioc_s_std,
658 .vidioc_enum_output = cx25821_vidioc_enum_output,
659 .vidioc_g_output = cx25821_vidioc_g_output,
660 .vidioc_s_output = cx25821_vidioc_s_output,
661 .vidioc_log_status = vidioc_log_status,
662 };
663
664 static const struct video_device cx25821_video_out_device = {
665 .name = "cx25821-video",
666 .fops = &video_out_fops,
667 .release = video_device_release_empty,
668 .minor = -1,
669 .ioctl_ops = &video_out_ioctl_ops,
670 .tvnorms = CX25821_NORMS,
671 };
672
673 void cx25821_video_unregister(struct cx25821_dev *dev, int chan_num)
674 {
675 cx_clear(PCI_INT_MSK, 1);
676
677 if (video_is_registered(&dev->channels[chan_num].vdev)) {
678 video_unregister_device(&dev->channels[chan_num].vdev);
679 v4l2_ctrl_handler_free(&dev->channels[chan_num].hdl);
680 }
681 }
682
683 int cx25821_video_register(struct cx25821_dev *dev)
684 {
685 int err;
686 int i;
687
688 /* initial device configuration */
689 dev->tvnorm = V4L2_STD_NTSC_M;
690
691 spin_lock_init(&dev->slock);
692
693 for (i = 0; i < MAX_VID_CAP_CHANNEL_NUM - 1; ++i) {
694 struct cx25821_channel *chan = &dev->channels[i];
695 struct video_device *vdev = &chan->vdev;
696 struct v4l2_ctrl_handler *hdl = &chan->hdl;
697 struct vb2_queue *q;
698 bool is_output = i > SRAM_CH08;
699
700 if (i == SRAM_CH08) /* audio channel */
701 continue;
702
703 if (!is_output) {
704 v4l2_ctrl_handler_init(hdl, 4);
705 v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops,
706 V4L2_CID_BRIGHTNESS, 0, 10000, 1, 6200);
707 v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops,
708 V4L2_CID_CONTRAST, 0, 10000, 1, 5000);
709 v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops,
710 V4L2_CID_SATURATION, 0, 10000, 1, 5000);
711 v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops,
712 V4L2_CID_HUE, 0, 10000, 1, 5000);
713 if (hdl->error) {
714 err = hdl->error;
715 goto fail_unreg;
716 }
717 err = v4l2_ctrl_handler_setup(hdl);
718 if (err)
719 goto fail_unreg;
720 } else {
721 chan->out = &dev->vid_out_data[i - SRAM_CH09];
722 chan->out->chan = chan;
723 }
724
725 chan->sram_channels = &cx25821_sram_channels[i];
726 chan->width = 720;
727 chan->field = V4L2_FIELD_INTERLACED;
728 if (dev->tvnorm & V4L2_STD_625_50)
729 chan->height = 576;
730 else
731 chan->height = 480;
732
733 if (chan->pixel_formats == PIXEL_FRMT_411)
734 chan->fmt = cx25821_format_by_fourcc(V4L2_PIX_FMT_Y41P);
735 else
736 chan->fmt = cx25821_format_by_fourcc(V4L2_PIX_FMT_YUYV);
737
738 cx_write(chan->sram_channels->int_stat, 0xffffffff);
739
740 INIT_LIST_HEAD(&chan->dma_vidq.active);
741
742 q = &chan->vidq;
743
744 q->type = is_output ? V4L2_BUF_TYPE_VIDEO_OUTPUT :
745 V4L2_BUF_TYPE_VIDEO_CAPTURE;
746 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
747 q->io_modes |= is_output ? VB2_WRITE : VB2_READ;
748 q->gfp_flags = GFP_DMA32;
749 q->min_buffers_needed = 2;
750 q->drv_priv = chan;
751 q->buf_struct_size = sizeof(struct cx25821_buffer);
752 q->ops = &cx25821_video_qops;
753 q->mem_ops = &vb2_dma_sg_memops;
754 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
755 q->lock = &dev->lock;
756 q->dev = &dev->pci->dev;
757
758 if (!is_output) {
759 err = vb2_queue_init(q);
760 if (err < 0)
761 goto fail_unreg;
762 }
763
764 /* register v4l devices */
765 *vdev = is_output ? cx25821_video_out_device : cx25821_video_device;
766 vdev->v4l2_dev = &dev->v4l2_dev;
767 if (!is_output)
768 vdev->ctrl_handler = hdl;
769 else
770 vdev->vfl_dir = VFL_DIR_TX;
771 vdev->lock = &dev->lock;
772 vdev->queue = q;
773 snprintf(vdev->name, sizeof(vdev->name), "%s #%d", dev->name, i);
774 video_set_drvdata(vdev, chan);
775
776 err = video_register_device(vdev, VFL_TYPE_GRABBER,
777 video_nr[dev->nr]);
778
779 if (err < 0)
780 goto fail_unreg;
781 }
782
783 /* set PCI interrupt */
784 cx_set(PCI_INT_MSK, 0xff);
785
786 return 0;
787
788 fail_unreg:
789 while (i >= 0)
790 cx25821_video_unregister(dev, i--);
791 return err;
792 }
CRIS linux kernel tree