?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux...
[linux/fpc-iii.git] / drivers / media / pci / cx25821 / cx25821-video.c
blobc48bba9daf1f8e55b36709aa973dffc19477011c
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 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 */
26
27 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
28
29 #include "cx25821-video.h"
30
31 MODULE_DESCRIPTION("v4l2 driver module for cx25821 based TV cards");
32 MODULE_AUTHOR("Hiep Huynh <hiep.huynh@conexant.com>");
33 MODULE_LICENSE("GPL");
34
35 static unsigned int video_nr[] = {[0 ... (CX25821_MAXBOARDS - 1)] = UNSET };
36
37 module_param_array(video_nr, int, NULL, 0444);
38
39 MODULE_PARM_DESC(video_nr, "video device numbers");
40
41 static unsigned int video_debug = VIDEO_DEBUG;
42 module_param(video_debug, int, 0644);
43 MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
44
45 static unsigned int irq_debug;
46 module_param(irq_debug, int, 0644);
47 MODULE_PARM_DESC(irq_debug, "enable debug messages [IRQ handler]");
48
49 #define FORMAT_FLAGS_PACKED 0x01
50
51 static const struct cx25821_fmt formats[] = {
52 {
53 .name = "4:1:1, packed, Y41P",
54 .fourcc = V4L2_PIX_FMT_Y41P,
55 .depth = 12,
56 .flags = FORMAT_FLAGS_PACKED,
57 }, {
58 .name = "4:2:2, packed, YUYV",
59 .fourcc = V4L2_PIX_FMT_YUYV,
60 .depth = 16,
61 .flags = FORMAT_FLAGS_PACKED,
62 },
63 };
64
65 static const struct cx25821_fmt *cx25821_format_by_fourcc(unsigned int fourcc)
66 {
67 unsigned int i;
68
69 for (i = 0; i < ARRAY_SIZE(formats); i++)
70 if (formats[i].fourcc == fourcc)
71 return formats + i;
72 return NULL;
73 }
74
75 int cx25821_start_video_dma(struct cx25821_dev *dev,
76 struct cx25821_dmaqueue *q,
77 struct cx25821_buffer *buf,
78 const struct sram_channel *channel)
79 {
80 int tmp = 0;
81
82 /* setup fifo + format */
83 cx25821_sram_channel_setup(dev, channel, buf->bpl, buf->risc.dma);
84
85 /* reset counter */
86 cx_write(channel->gpcnt_ctl, 3);
87
88 /* enable irq */
89 cx_set(PCI_INT_MSK, cx_read(PCI_INT_MSK) | (1 << channel->i));
90 cx_set(channel->int_msk, 0x11);
91
92 /* start dma */
93 cx_write(channel->dma_ctl, 0x11); /* FIFO and RISC enable */
94
95 /* make sure upstream setting if any is reversed */
96 tmp = cx_read(VID_CH_MODE_SEL);
97 cx_write(VID_CH_MODE_SEL, tmp & 0xFFFFFE00);
98
99 return 0;
100 }
101
102 int cx25821_video_irq(struct cx25821_dev *dev, int chan_num, u32 status)
103 {
104 int handled = 0;
105 u32 mask;
106 const struct sram_channel *channel = dev->channels[chan_num].sram_channels;
107
108 mask = cx_read(channel->int_msk);
109 if (0 == (status & mask))
110 return handled;
111
112 cx_write(channel->int_stat, status);
113
114 /* risc op code error */
115 if (status & (1 << 16)) {
116 pr_warn("%s, %s: video risc op code error\n",
117 dev->name, channel->name);
118 cx_clear(channel->dma_ctl, 0x11);
119 cx25821_sram_channel_dump(dev, channel);
120 }
121
122 /* risc1 y */
123 if (status & FLD_VID_DST_RISC1) {
124 struct cx25821_dmaqueue *dmaq =
125 &dev->channels[channel->i].dma_vidq;
126 struct cx25821_buffer *buf;
127
128 spin_lock(&dev->slock);
129 if (!list_empty(&dmaq->active)) {
130 buf = list_entry(dmaq->active.next,
131 struct cx25821_buffer, queue);
132
133 buf->vb.vb2_buf.timestamp = ktime_get_ns();
134 buf->vb.sequence = dmaq->count++;
135 list_del(&buf->queue);
136 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_DONE);
137 }
138 spin_unlock(&dev->slock);
139 handled++;
140 }
141 return handled;
142 }
143
144 static int cx25821_queue_setup(struct vb2_queue *q,
145 unsigned int *num_buffers, unsigned int *num_planes,
146 unsigned int sizes[], void *alloc_ctxs[])
147 {
148 struct cx25821_channel *chan = q->drv_priv;
149 unsigned size = (chan->fmt->depth * chan->width * chan->height) >> 3;
150
151 alloc_ctxs[0] = chan->dev->alloc_ctx;
152
153 if (*num_planes)
154 return sizes[0] < size ? -EINVAL : 0;
155
156 *num_planes = 1;
157 sizes[0] = size;
158 return 0;
159 }
160
161 static int cx25821_buffer_prepare(struct vb2_buffer *vb)
162 {
163 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
164 struct cx25821_channel *chan = vb->vb2_queue->drv_priv;
165 struct cx25821_dev *dev = chan->dev;
166 struct cx25821_buffer *buf =
167 container_of(vbuf, struct cx25821_buffer, vb);
168 struct sg_table *sgt = vb2_dma_sg_plane_desc(vb, 0);
169 u32 line0_offset;
170 int bpl_local = LINE_SIZE_D1;
171 int ret;
172
173 if (chan->pixel_formats == PIXEL_FRMT_411)
174 buf->bpl = (chan->fmt->depth * chan->width) >> 3;
175 else
176 buf->bpl = (chan->fmt->depth >> 3) * chan->width;
177
178 if (vb2_plane_size(vb, 0) < chan->height * buf->bpl)
179 return -EINVAL;
180 vb2_set_plane_payload(vb, 0, chan->height * buf->bpl);
181 buf->vb.field = chan->field;
182
183 if (chan->pixel_formats == PIXEL_FRMT_411) {
184 bpl_local = buf->bpl;
185 } else {
186 bpl_local = buf->bpl; /* Default */
187
188 if (chan->use_cif_resolution) {
189 if (dev->tvnorm & V4L2_STD_625_50)
190 bpl_local = 352 << 1;
191 else
192 bpl_local = chan->cif_width << 1;
193 }
194 }
195
196 switch (chan->field) {
197 case V4L2_FIELD_TOP:
198 ret = cx25821_risc_buffer(dev->pci, &buf->risc,
199 sgt->sgl, 0, UNSET,
200 buf->bpl, 0, chan->height);
201 break;
202 case V4L2_FIELD_BOTTOM:
203 ret = cx25821_risc_buffer(dev->pci, &buf->risc,
204 sgt->sgl, UNSET, 0,
205 buf->bpl, 0, chan->height);
206 break;
207 case V4L2_FIELD_INTERLACED:
208 /* All other formats are top field first */
209 line0_offset = 0;
210 dprintk(1, "top field first\n");
211
212 ret = cx25821_risc_buffer(dev->pci, &buf->risc,
213 sgt->sgl, line0_offset,
214 bpl_local, bpl_local, bpl_local,
215 chan->height >> 1);
216 break;
217 case V4L2_FIELD_SEQ_TB:
218 ret = cx25821_risc_buffer(dev->pci, &buf->risc,
219 sgt->sgl,
220 0, buf->bpl * (chan->height >> 1),
221 buf->bpl, 0, chan->height >> 1);
222 break;
223 case V4L2_FIELD_SEQ_BT:
224 ret = cx25821_risc_buffer(dev->pci, &buf->risc,
225 sgt->sgl,
226 buf->bpl * (chan->height >> 1), 0,
227 buf->bpl, 0, chan->height >> 1);
228 break;
229 default:
230 WARN_ON(1);
231 ret = -EINVAL;
232 break;
233 }
234
235 dprintk(2, "[%p/%d] buffer_prep - %dx%d %dbpp \"%s\" - dma=0x%08lx\n",
236 buf, buf->vb.vb2_buf.index, chan->width, chan->height,
237 chan->fmt->depth, chan->fmt->name,
238 (unsigned long)buf->risc.dma);
239
240 return ret;
241 }
242
243 static void cx25821_buffer_finish(struct vb2_buffer *vb)
244 {
245 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
246 struct cx25821_buffer *buf =
247 container_of(vbuf, struct cx25821_buffer, vb);
248 struct cx25821_channel *chan = vb->vb2_queue->drv_priv;
249 struct cx25821_dev *dev = chan->dev;
250
251 cx25821_free_buffer(dev, buf);
252 }
253
254 static void cx25821_buffer_queue(struct vb2_buffer *vb)
255 {
256 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
257 struct cx25821_buffer *buf =
258 container_of(vbuf, struct cx25821_buffer, vb);
259 struct cx25821_channel *chan = vb->vb2_queue->drv_priv;
260 struct cx25821_dev *dev = chan->dev;
261 struct cx25821_buffer *prev;
262 struct cx25821_dmaqueue *q = &dev->channels[chan->id].dma_vidq;
263
264 buf->risc.cpu[1] = cpu_to_le32(buf->risc.dma + 12);
265 buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_CNT_INC);
266 buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma + 12);
267 buf->risc.jmp[2] = cpu_to_le32(0); /* bits 63-32 */
268
269 if (list_empty(&q->active)) {
270 list_add_tail(&buf->queue, &q->active);
271 } else {
272 buf->risc.cpu[0] |= cpu_to_le32(RISC_IRQ1);
273 prev = list_entry(q->active.prev, struct cx25821_buffer,
274 queue);
275 list_add_tail(&buf->queue, &q->active);
276 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
277 }
278 }
279
280 static int cx25821_start_streaming(struct vb2_queue *q, unsigned int count)
281 {
282 struct cx25821_channel *chan = q->drv_priv;
283 struct cx25821_dev *dev = chan->dev;
284 struct cx25821_dmaqueue *dmaq = &dev->channels[chan->id].dma_vidq;
285 struct cx25821_buffer *buf = list_entry(dmaq->active.next,
286 struct cx25821_buffer, queue);
287
288 dmaq->count = 0;
289 cx25821_start_video_dma(dev, dmaq, buf, chan->sram_channels);
290 return 0;
291 }
292
293 static void cx25821_stop_streaming(struct vb2_queue *q)
294 {
295 struct cx25821_channel *chan = q->drv_priv;
296 struct cx25821_dev *dev = chan->dev;
297 struct cx25821_dmaqueue *dmaq = &dev->channels[chan->id].dma_vidq;
298 unsigned long flags;
299
300 cx_write(chan->sram_channels->dma_ctl, 0); /* FIFO and RISC disable */
301 spin_lock_irqsave(&dev->slock, flags);
302 while (!list_empty(&dmaq->active)) {
303 struct cx25821_buffer *buf = list_entry(dmaq->active.next,
304 struct cx25821_buffer, queue);
305
306 list_del(&buf->queue);
307 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
308 }
309 spin_unlock_irqrestore(&dev->slock, flags);
310 }
311
312 static struct vb2_ops cx25821_video_qops = {
313 .queue_setup = cx25821_queue_setup,
314 .buf_prepare = cx25821_buffer_prepare,
315 .buf_finish = cx25821_buffer_finish,
316 .buf_queue = cx25821_buffer_queue,
317 .wait_prepare = vb2_ops_wait_prepare,
318 .wait_finish = vb2_ops_wait_finish,
319 .start_streaming = cx25821_start_streaming,
320 .stop_streaming = cx25821_stop_streaming,
321 };
322
323 /* VIDEO IOCTLS */
324
325 static int cx25821_vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
326 struct v4l2_fmtdesc *f)
327 {
328 if (unlikely(f->index >= ARRAY_SIZE(formats)))
329 return -EINVAL;
330
331 strlcpy(f->description, formats[f->index].name, sizeof(f->description));
332 f->pixelformat = formats[f->index].fourcc;
333
334 return 0;
335 }
336
337 static int cx25821_vidioc_g_fmt_vid_cap(struct file *file, void *priv,
338 struct v4l2_format *f)
339 {
340 struct cx25821_channel *chan = video_drvdata(file);
341
342 f->fmt.pix.width = chan->width;
343 f->fmt.pix.height = chan->height;
344 f->fmt.pix.field = chan->field;
345 f->fmt.pix.pixelformat = chan->fmt->fourcc;
346 f->fmt.pix.bytesperline = (chan->width * chan->fmt->depth) >> 3;
347 f->fmt.pix.sizeimage = chan->height * f->fmt.pix.bytesperline;
348 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
349
350 return 0;
351 }
352
353 static int cx25821_vidioc_try_fmt_vid_cap(struct file *file, void *priv,
354 struct v4l2_format *f)
355 {
356 struct cx25821_channel *chan = video_drvdata(file);
357 struct cx25821_dev *dev = chan->dev;
358 const struct cx25821_fmt *fmt;
359 enum v4l2_field field = f->fmt.pix.field;
360 unsigned int maxh;
361 unsigned w;
362
363 fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
364 if (NULL == fmt)
365 return -EINVAL;
366 maxh = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480;
367
368 w = f->fmt.pix.width;
369 if (field != V4L2_FIELD_BOTTOM)
370 field = V4L2_FIELD_TOP;
371 if (w < 352) {
372 w = 176;
373 f->fmt.pix.height = maxh / 4;
374 } else if (w < 720) {
375 w = 352;
376 f->fmt.pix.height = maxh / 2;
377 } else {
378 w = 720;
379 f->fmt.pix.height = maxh;
380 field = V4L2_FIELD_INTERLACED;
381 }
382 f->fmt.pix.field = field;
383 f->fmt.pix.width = w;
384 f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
385 f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
386 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
387
388 return 0;
389 }
390
391 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
392 struct v4l2_format *f)
393 {
394 struct cx25821_channel *chan = video_drvdata(file);
395 struct cx25821_dev *dev = chan->dev;
396 int pix_format = PIXEL_FRMT_422;
397 int err;
398
399 err = cx25821_vidioc_try_fmt_vid_cap(file, priv, f);
400
401 if (0 != err)
402 return err;
403
404 chan->fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
405 chan->field = f->fmt.pix.field;
406 chan->width = f->fmt.pix.width;
407 chan->height = f->fmt.pix.height;
408
409 if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_Y41P)
410 pix_format = PIXEL_FRMT_411;
411 else
412 pix_format = PIXEL_FRMT_422;
413
414 cx25821_set_pixel_format(dev, SRAM_CH00, pix_format);
415
416 /* check if cif resolution */
417 if (chan->width == 320 || chan->width == 352)
418 chan->use_cif_resolution = 1;
419 else
420 chan->use_cif_resolution = 0;
421
422 chan->cif_width = chan->width;
423 medusa_set_resolution(dev, chan->width, SRAM_CH00);
424 return 0;
425 }
426
427 static int vidioc_log_status(struct file *file, void *priv)
428 {
429 struct cx25821_channel *chan = video_drvdata(file);
430 struct cx25821_dev *dev = chan->dev;
431 const struct sram_channel *sram_ch = chan->sram_channels;
432 u32 tmp = 0;
433
434 tmp = cx_read(sram_ch->dma_ctl);
435 pr_info("Video input 0 is %s\n",
436 (tmp & 0x11) ? "streaming" : "stopped");
437 return 0;
438 }
439
440
441 static int cx25821_vidioc_querycap(struct file *file, void *priv,
442 struct v4l2_capability *cap)
443 {
444 struct cx25821_channel *chan = video_drvdata(file);
445 struct cx25821_dev *dev = chan->dev;
446 const u32 cap_input = V4L2_CAP_VIDEO_CAPTURE |
447 V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
448 const u32 cap_output = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_READWRITE;
449
450 strcpy(cap->driver, "cx25821");
451 strlcpy(cap->card, cx25821_boards[dev->board].name, sizeof(cap->card));
452 sprintf(cap->bus_info, "PCIe:%s", pci_name(dev->pci));
453 if (chan->id >= VID_CHANNEL_NUM)
454 cap->device_caps = cap_output;
455 else
456 cap->device_caps = cap_input;
457 cap->capabilities = cap_input | cap_output | V4L2_CAP_DEVICE_CAPS;
458 return 0;
459 }
460
461 static int cx25821_vidioc_g_std(struct file *file, void *priv, v4l2_std_id *tvnorms)
462 {
463 struct cx25821_channel *chan = video_drvdata(file);
464
465 *tvnorms = chan->dev->tvnorm;
466 return 0;
467 }
468
469 static int cx25821_vidioc_s_std(struct file *file, void *priv,
470 v4l2_std_id tvnorms)
471 {
472 struct cx25821_channel *chan = video_drvdata(file);
473 struct cx25821_dev *dev = chan->dev;
474
475 if (dev->tvnorm == tvnorms)
476 return 0;
477
478 dev->tvnorm = tvnorms;
479 chan->width = 720;
480 chan->height = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480;
481
482 medusa_set_videostandard(dev);
483
484 return 0;
485 }
486
487 static int cx25821_vidioc_enum_input(struct file *file, void *priv,
488 struct v4l2_input *i)
489 {
490 if (i->index)
491 return -EINVAL;
492
493 i->type = V4L2_INPUT_TYPE_CAMERA;
494 i->std = CX25821_NORMS;
495 strcpy(i->name, "Composite");
496 return 0;
497 }
498
499 static int cx25821_vidioc_g_input(struct file *file, void *priv, unsigned int *i)
500 {
501 *i = 0;
502 return 0;
503 }
504
505 static int cx25821_vidioc_s_input(struct file *file, void *priv, unsigned int i)
506 {
507 return i ? -EINVAL : 0;
508 }
509
510 static int cx25821_s_ctrl(struct v4l2_ctrl *ctrl)
511 {
512 struct cx25821_channel *chan =
513 container_of(ctrl->handler, struct cx25821_channel, hdl);
514 struct cx25821_dev *dev = chan->dev;
515
516 switch (ctrl->id) {
517 case V4L2_CID_BRIGHTNESS:
518 medusa_set_brightness(dev, ctrl->val, chan->id);
519 break;
520 case V4L2_CID_HUE:
521 medusa_set_hue(dev, ctrl->val, chan->id);
522 break;
523 case V4L2_CID_CONTRAST:
524 medusa_set_contrast(dev, ctrl->val, chan->id);
525 break;
526 case V4L2_CID_SATURATION:
527 medusa_set_saturation(dev, ctrl->val, chan->id);
528 break;
529 default:
530 return -EINVAL;
531 }
532 return 0;
533 }
534
535 static int cx25821_vidioc_enum_output(struct file *file, void *priv,
536 struct v4l2_output *o)
537 {
538 if (o->index)
539 return -EINVAL;
540
541 o->type = V4L2_INPUT_TYPE_CAMERA;
542 o->std = CX25821_NORMS;
543 strcpy(o->name, "Composite");
544 return 0;
545 }
546
547 static int cx25821_vidioc_g_output(struct file *file, void *priv, unsigned int *o)
548 {
549 *o = 0;
550 return 0;
551 }
552
553 static int cx25821_vidioc_s_output(struct file *file, void *priv, unsigned int o)
554 {
555 return o ? -EINVAL : 0;
556 }
557
558 static int cx25821_vidioc_try_fmt_vid_out(struct file *file, void *priv,
559 struct v4l2_format *f)
560 {
561 struct cx25821_channel *chan = video_drvdata(file);
562 struct cx25821_dev *dev = chan->dev;
563 const struct cx25821_fmt *fmt;
564
565 fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
566 if (NULL == fmt)
567 return -EINVAL;
568 f->fmt.pix.width = 720;
569 f->fmt.pix.height = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480;
570 f->fmt.pix.field = V4L2_FIELD_INTERLACED;
571 f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
572 f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
573 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
574 return 0;
575 }
576
577 static int vidioc_s_fmt_vid_out(struct file *file, void *priv,
578 struct v4l2_format *f)
579 {
580 struct cx25821_channel *chan = video_drvdata(file);
581 int err;
582
583 err = cx25821_vidioc_try_fmt_vid_out(file, priv, f);
584
585 if (0 != err)
586 return err;
587
588 chan->fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
589 chan->field = f->fmt.pix.field;
590 chan->width = f->fmt.pix.width;
591 chan->height = f->fmt.pix.height;
592 if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_Y41P)
593 chan->pixel_formats = PIXEL_FRMT_411;
594 else
595 chan->pixel_formats = PIXEL_FRMT_422;
596 return 0;
597 }
598
599 static const struct v4l2_ctrl_ops cx25821_ctrl_ops = {
600 .s_ctrl = cx25821_s_ctrl,
601 };
602
603 static const struct v4l2_file_operations video_fops = {
604 .owner = THIS_MODULE,
605 .open = v4l2_fh_open,
606 .release = vb2_fop_release,
607 .read = vb2_fop_read,
608 .poll = vb2_fop_poll,
609 .unlocked_ioctl = video_ioctl2,
610 .mmap = vb2_fop_mmap,
611 };
612
613 static const struct v4l2_ioctl_ops video_ioctl_ops = {
614 .vidioc_querycap = cx25821_vidioc_querycap,
615 .vidioc_enum_fmt_vid_cap = cx25821_vidioc_enum_fmt_vid_cap,
616 .vidioc_g_fmt_vid_cap = cx25821_vidioc_g_fmt_vid_cap,
617 .vidioc_try_fmt_vid_cap = cx25821_vidioc_try_fmt_vid_cap,
618 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
619 .vidioc_reqbufs = vb2_ioctl_reqbufs,
620 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
621 .vidioc_create_bufs = vb2_ioctl_create_bufs,
622 .vidioc_querybuf = vb2_ioctl_querybuf,
623 .vidioc_qbuf = vb2_ioctl_qbuf,
624 .vidioc_dqbuf = vb2_ioctl_dqbuf,
625 .vidioc_streamon = vb2_ioctl_streamon,
626 .vidioc_streamoff = vb2_ioctl_streamoff,
627 .vidioc_g_std = cx25821_vidioc_g_std,
628 .vidioc_s_std = cx25821_vidioc_s_std,
629 .vidioc_enum_input = cx25821_vidioc_enum_input,
630 .vidioc_g_input = cx25821_vidioc_g_input,
631 .vidioc_s_input = cx25821_vidioc_s_input,
632 .vidioc_log_status = vidioc_log_status,
633 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
634 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
635 };
636
637 static const struct video_device cx25821_video_device = {
638 .name = "cx25821-video",
639 .fops = &video_fops,
640 .release = video_device_release_empty,
641 .minor = -1,
642 .ioctl_ops = &video_ioctl_ops,
643 .tvnorms = CX25821_NORMS,
644 };
645
646 static const struct v4l2_file_operations video_out_fops = {
647 .owner = THIS_MODULE,
648 .open = v4l2_fh_open,
649 .release = vb2_fop_release,
650 .write = vb2_fop_write,
651 .poll = vb2_fop_poll,
652 .unlocked_ioctl = video_ioctl2,
653 .mmap = vb2_fop_mmap,
654 };
655
656 static const struct v4l2_ioctl_ops video_out_ioctl_ops = {
657 .vidioc_querycap = cx25821_vidioc_querycap,
658 .vidioc_enum_fmt_vid_out = cx25821_vidioc_enum_fmt_vid_cap,
659 .vidioc_g_fmt_vid_out = cx25821_vidioc_g_fmt_vid_cap,
660 .vidioc_try_fmt_vid_out = cx25821_vidioc_try_fmt_vid_out,
661 .vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out,
662 .vidioc_g_std = cx25821_vidioc_g_std,
663 .vidioc_s_std = cx25821_vidioc_s_std,
664 .vidioc_enum_output = cx25821_vidioc_enum_output,
665 .vidioc_g_output = cx25821_vidioc_g_output,
666 .vidioc_s_output = cx25821_vidioc_s_output,
667 .vidioc_log_status = vidioc_log_status,
668 };
669
670 static const struct video_device cx25821_video_out_device = {
671 .name = "cx25821-video",
672 .fops = &video_out_fops,
673 .release = video_device_release_empty,
674 .minor = -1,
675 .ioctl_ops = &video_out_ioctl_ops,
676 .tvnorms = CX25821_NORMS,
677 };
678
679 void cx25821_video_unregister(struct cx25821_dev *dev, int chan_num)
680 {
681 cx_clear(PCI_INT_MSK, 1);
682
683 if (video_is_registered(&dev->channels[chan_num].vdev)) {
684 video_unregister_device(&dev->channels[chan_num].vdev);
685 v4l2_ctrl_handler_free(&dev->channels[chan_num].hdl);
686 }
687 }
688
689 int cx25821_video_register(struct cx25821_dev *dev)
690 {
691 int err;
692 int i;
693
694 /* initial device configuration */
695 dev->tvnorm = V4L2_STD_NTSC_M;
696
697 spin_lock_init(&dev->slock);
698
699 for (i = 0; i < MAX_VID_CAP_CHANNEL_NUM - 1; ++i) {
700 struct cx25821_channel *chan = &dev->channels[i];
701 struct video_device *vdev = &chan->vdev;
702 struct v4l2_ctrl_handler *hdl = &chan->hdl;
703 struct vb2_queue *q;
704 bool is_output = i > SRAM_CH08;
705
706 if (i == SRAM_CH08) /* audio channel */
707 continue;
708
709 if (!is_output) {
710 v4l2_ctrl_handler_init(hdl, 4);
711 v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops,
712 V4L2_CID_BRIGHTNESS, 0, 10000, 1, 6200);
713 v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops,
714 V4L2_CID_CONTRAST, 0, 10000, 1, 5000);
715 v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops,
716 V4L2_CID_SATURATION, 0, 10000, 1, 5000);
717 v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops,
718 V4L2_CID_HUE, 0, 10000, 1, 5000);
719 if (hdl->error) {
720 err = hdl->error;
721 goto fail_unreg;
722 }
723 err = v4l2_ctrl_handler_setup(hdl);
724 if (err)
725 goto fail_unreg;
726 } else {
727 chan->out = &dev->vid_out_data[i - SRAM_CH09];
728 chan->out->chan = chan;
729 }
730
731 chan->sram_channels = &cx25821_sram_channels[i];
732 chan->width = 720;
733 chan->field = V4L2_FIELD_INTERLACED;
734 if (dev->tvnorm & V4L2_STD_625_50)
735 chan->height = 576;
736 else
737 chan->height = 480;
738
739 if (chan->pixel_formats == PIXEL_FRMT_411)
740 chan->fmt = cx25821_format_by_fourcc(V4L2_PIX_FMT_Y41P);
741 else
742 chan->fmt = cx25821_format_by_fourcc(V4L2_PIX_FMT_YUYV);
743
744 cx_write(chan->sram_channels->int_stat, 0xffffffff);
745
746 INIT_LIST_HEAD(&chan->dma_vidq.active);
747
748 q = &chan->vidq;
749
750 q->type = is_output ? V4L2_BUF_TYPE_VIDEO_OUTPUT :
751 V4L2_BUF_TYPE_VIDEO_CAPTURE;
752 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
753 q->io_modes |= is_output ? VB2_WRITE : VB2_READ;
754 q->gfp_flags = GFP_DMA32;
755 q->min_buffers_needed = 2;
756 q->drv_priv = chan;
757 q->buf_struct_size = sizeof(struct cx25821_buffer);
758 q->ops = &cx25821_video_qops;
759 q->mem_ops = &vb2_dma_sg_memops;
760 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
761 q->lock = &dev->lock;
762
763 if (!is_output) {
764 err = vb2_queue_init(q);
765 if (err < 0)
766 goto fail_unreg;
767 }
768
769 /* register v4l devices */
770 *vdev = is_output ? cx25821_video_out_device : cx25821_video_device;
771 vdev->v4l2_dev = &dev->v4l2_dev;
772 if (!is_output)
773 vdev->ctrl_handler = hdl;
774 else
775 vdev->vfl_dir = VFL_DIR_TX;
776 vdev->lock = &dev->lock;
777 vdev->queue = q;
778 snprintf(vdev->name, sizeof(vdev->name), "%s #%d", dev->name, i);
779 video_set_drvdata(vdev, chan);
780
781 err = video_register_device(vdev, VFL_TYPE_GRABBER,
782 video_nr[dev->nr]);
783
784 if (err < 0)
785 goto fail_unreg;
786 }
787
788 /* set PCI interrupt */
789 cx_set(PCI_INT_MSK, 0xff);
790
791 return 0;
792
793 fail_unreg:
794 while (i >= 0)
795 cx25821_video_unregister(dev, i--);
796 return err;
797 }
Linux with added FPC-III support