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treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / media / pci / cx25821 / cx25821-video.c
bloba10261da0db6eec3ec734dee547cc4be987d99a7
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
16 MODULE_DESCRIPTION("v4l2 driver module for cx25821 based TV cards");
17 MODULE_AUTHOR("Hiep Huynh <hiep.huynh@conexant.com>");
18 MODULE_LICENSE("GPL");
19
20 static unsigned int video_nr[] = {[0 ... (CX25821_MAXBOARDS - 1)] = UNSET };
21
22 module_param_array(video_nr, int, NULL, 0444);
23
24 MODULE_PARM_DESC(video_nr, "video device numbers");
25
26 static unsigned int video_debug = VIDEO_DEBUG;
27 module_param(video_debug, int, 0644);
28 MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
29
30 static unsigned int irq_debug;
31 module_param(irq_debug, int, 0644);
32 MODULE_PARM_DESC(irq_debug, "enable debug messages [IRQ handler]");
33
34 #define FORMAT_FLAGS_PACKED 0x01
35
36 static 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
48 static 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
58 int 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
85 int 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
127 static 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
142 static 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
224 static 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
235 static 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
261 static 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
274 static 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
293 static 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 .wait_prepare = vb2_ops_wait_prepare,
299 .wait_finish = vb2_ops_wait_finish,
300 .start_streaming = cx25821_start_streaming,
301 .stop_streaming = cx25821_stop_streaming,
302 };
303
304 /* VIDEO IOCTLS */
305
306 static int cx25821_vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
307 struct v4l2_fmtdesc *f)
308 {
309 if (unlikely(f->index >= ARRAY_SIZE(formats)))
310 return -EINVAL;
311
312 f->pixelformat = formats[f->index].fourcc;
313
314 return 0;
315 }
316
317 static int cx25821_vidioc_g_fmt_vid_cap(struct file *file, void *priv,
318 struct v4l2_format *f)
319 {
320 struct cx25821_channel *chan = video_drvdata(file);
321
322 f->fmt.pix.width = chan->width;
323 f->fmt.pix.height = chan->height;
324 f->fmt.pix.field = chan->field;
325 f->fmt.pix.pixelformat = chan->fmt->fourcc;
326 f->fmt.pix.bytesperline = (chan->width * chan->fmt->depth) >> 3;
327 f->fmt.pix.sizeimage = chan->height * f->fmt.pix.bytesperline;
328 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
329
330 return 0;
331 }
332
333 static int cx25821_vidioc_try_fmt_vid_cap(struct file *file, void *priv,
334 struct v4l2_format *f)
335 {
336 struct cx25821_channel *chan = video_drvdata(file);
337 struct cx25821_dev *dev = chan->dev;
338 const struct cx25821_fmt *fmt;
339 enum v4l2_field field = f->fmt.pix.field;
340 unsigned int maxh;
341 unsigned w;
342
343 fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
344 if (NULL == fmt)
345 return -EINVAL;
346 maxh = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480;
347
348 w = f->fmt.pix.width;
349 if (field != V4L2_FIELD_BOTTOM)
350 field = V4L2_FIELD_TOP;
351 if (w < 352) {
352 w = 176;
353 f->fmt.pix.height = maxh / 4;
354 } else if (w < 720) {
355 w = 352;
356 f->fmt.pix.height = maxh / 2;
357 } else {
358 w = 720;
359 f->fmt.pix.height = maxh;
360 field = V4L2_FIELD_INTERLACED;
361 }
362 f->fmt.pix.field = field;
363 f->fmt.pix.width = w;
364 f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
365 f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
366 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
367
368 return 0;
369 }
370
371 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
372 struct v4l2_format *f)
373 {
374 struct cx25821_channel *chan = video_drvdata(file);
375 struct cx25821_dev *dev = chan->dev;
376 int pix_format = PIXEL_FRMT_422;
377 int err;
378
379 err = cx25821_vidioc_try_fmt_vid_cap(file, priv, f);
380
381 if (0 != err)
382 return err;
383
384 chan->fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
385 chan->field = f->fmt.pix.field;
386 chan->width = f->fmt.pix.width;
387 chan->height = f->fmt.pix.height;
388
389 if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_Y41P)
390 pix_format = PIXEL_FRMT_411;
391 else
392 pix_format = PIXEL_FRMT_422;
393
394 cx25821_set_pixel_format(dev, SRAM_CH00, pix_format);
395
396 /* check if cif resolution */
397 if (chan->width == 320 || chan->width == 352)
398 chan->use_cif_resolution = 1;
399 else
400 chan->use_cif_resolution = 0;
401
402 chan->cif_width = chan->width;
403 medusa_set_resolution(dev, chan->width, SRAM_CH00);
404 return 0;
405 }
406
407 static int vidioc_log_status(struct file *file, void *priv)
408 {
409 struct cx25821_channel *chan = video_drvdata(file);
410 struct cx25821_dev *dev = chan->dev;
411 const struct sram_channel *sram_ch = chan->sram_channels;
412 u32 tmp = 0;
413
414 tmp = cx_read(sram_ch->dma_ctl);
415 pr_info("Video input 0 is %s\n",
416 (tmp & 0x11) ? "streaming" : "stopped");
417 return 0;
418 }
419
420
421 static int cx25821_vidioc_querycap(struct file *file, void *priv,
422 struct v4l2_capability *cap)
423 {
424 struct cx25821_channel *chan = video_drvdata(file);
425 struct cx25821_dev *dev = chan->dev;
426
427 strscpy(cap->driver, "cx25821", sizeof(cap->driver));
428 strscpy(cap->card, cx25821_boards[dev->board].name, sizeof(cap->card));
429 sprintf(cap->bus_info, "PCIe:%s", pci_name(dev->pci));
430 cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT |
431 V4L2_CAP_READWRITE | V4L2_CAP_STREAMING |
432 V4L2_CAP_DEVICE_CAPS;
433 return 0;
434 }
435
436 static int cx25821_vidioc_g_std(struct file *file, void *priv, v4l2_std_id *tvnorms)
437 {
438 struct cx25821_channel *chan = video_drvdata(file);
439
440 *tvnorms = chan->dev->tvnorm;
441 return 0;
442 }
443
444 static int cx25821_vidioc_s_std(struct file *file, void *priv,
445 v4l2_std_id tvnorms)
446 {
447 struct cx25821_channel *chan = video_drvdata(file);
448 struct cx25821_dev *dev = chan->dev;
449
450 if (dev->tvnorm == tvnorms)
451 return 0;
452
453 dev->tvnorm = tvnorms;
454 chan->width = 720;
455 chan->height = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480;
456
457 medusa_set_videostandard(dev);
458
459 return 0;
460 }
461
462 static int cx25821_vidioc_enum_input(struct file *file, void *priv,
463 struct v4l2_input *i)
464 {
465 if (i->index)
466 return -EINVAL;
467
468 i->type = V4L2_INPUT_TYPE_CAMERA;
469 i->std = CX25821_NORMS;
470 strscpy(i->name, "Composite", sizeof(i->name));
471 return 0;
472 }
473
474 static int cx25821_vidioc_g_input(struct file *file, void *priv, unsigned int *i)
475 {
476 *i = 0;
477 return 0;
478 }
479
480 static int cx25821_vidioc_s_input(struct file *file, void *priv, unsigned int i)
481 {
482 return i ? -EINVAL : 0;
483 }
484
485 static int cx25821_s_ctrl(struct v4l2_ctrl *ctrl)
486 {
487 struct cx25821_channel *chan =
488 container_of(ctrl->handler, struct cx25821_channel, hdl);
489 struct cx25821_dev *dev = chan->dev;
490
491 switch (ctrl->id) {
492 case V4L2_CID_BRIGHTNESS:
493 medusa_set_brightness(dev, ctrl->val, chan->id);
494 break;
495 case V4L2_CID_HUE:
496 medusa_set_hue(dev, ctrl->val, chan->id);
497 break;
498 case V4L2_CID_CONTRAST:
499 medusa_set_contrast(dev, ctrl->val, chan->id);
500 break;
501 case V4L2_CID_SATURATION:
502 medusa_set_saturation(dev, ctrl->val, chan->id);
503 break;
504 default:
505 return -EINVAL;
506 }
507 return 0;
508 }
509
510 static int cx25821_vidioc_enum_output(struct file *file, void *priv,
511 struct v4l2_output *o)
512 {
513 if (o->index)
514 return -EINVAL;
515
516 o->type = V4L2_INPUT_TYPE_CAMERA;
517 o->std = CX25821_NORMS;
518 strscpy(o->name, "Composite", sizeof(o->name));
519 return 0;
520 }
521
522 static int cx25821_vidioc_g_output(struct file *file, void *priv, unsigned int *o)
523 {
524 *o = 0;
525 return 0;
526 }
527
528 static int cx25821_vidioc_s_output(struct file *file, void *priv, unsigned int o)
529 {
530 return o ? -EINVAL : 0;
531 }
532
533 static int cx25821_vidioc_try_fmt_vid_out(struct file *file, void *priv,
534 struct v4l2_format *f)
535 {
536 struct cx25821_channel *chan = video_drvdata(file);
537 struct cx25821_dev *dev = chan->dev;
538 const struct cx25821_fmt *fmt;
539
540 fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
541 if (NULL == fmt)
542 return -EINVAL;
543 f->fmt.pix.width = 720;
544 f->fmt.pix.height = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480;
545 f->fmt.pix.field = V4L2_FIELD_INTERLACED;
546 f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
547 f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
548 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
549 return 0;
550 }
551
552 static int vidioc_s_fmt_vid_out(struct file *file, void *priv,
553 struct v4l2_format *f)
554 {
555 struct cx25821_channel *chan = video_drvdata(file);
556 int err;
557
558 err = cx25821_vidioc_try_fmt_vid_out(file, priv, f);
559
560 if (0 != err)
561 return err;
562
563 chan->fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
564 chan->field = f->fmt.pix.field;
565 chan->width = f->fmt.pix.width;
566 chan->height = f->fmt.pix.height;
567 if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_Y41P)
568 chan->pixel_formats = PIXEL_FRMT_411;
569 else
570 chan->pixel_formats = PIXEL_FRMT_422;
571 return 0;
572 }
573
574 static const struct v4l2_ctrl_ops cx25821_ctrl_ops = {
575 .s_ctrl = cx25821_s_ctrl,
576 };
577
578 static const struct v4l2_file_operations video_fops = {
579 .owner = THIS_MODULE,
580 .open = v4l2_fh_open,
581 .release = vb2_fop_release,
582 .read = vb2_fop_read,
583 .poll = vb2_fop_poll,
584 .unlocked_ioctl = video_ioctl2,
585 .mmap = vb2_fop_mmap,
586 };
587
588 static const struct v4l2_ioctl_ops video_ioctl_ops = {
589 .vidioc_querycap = cx25821_vidioc_querycap,
590 .vidioc_enum_fmt_vid_cap = cx25821_vidioc_enum_fmt_vid_cap,
591 .vidioc_g_fmt_vid_cap = cx25821_vidioc_g_fmt_vid_cap,
592 .vidioc_try_fmt_vid_cap = cx25821_vidioc_try_fmt_vid_cap,
593 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
594 .vidioc_reqbufs = vb2_ioctl_reqbufs,
595 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
596 .vidioc_create_bufs = vb2_ioctl_create_bufs,
597 .vidioc_querybuf = vb2_ioctl_querybuf,
598 .vidioc_qbuf = vb2_ioctl_qbuf,
599 .vidioc_dqbuf = vb2_ioctl_dqbuf,
600 .vidioc_streamon = vb2_ioctl_streamon,
601 .vidioc_streamoff = vb2_ioctl_streamoff,
602 .vidioc_g_std = cx25821_vidioc_g_std,
603 .vidioc_s_std = cx25821_vidioc_s_std,
604 .vidioc_enum_input = cx25821_vidioc_enum_input,
605 .vidioc_g_input = cx25821_vidioc_g_input,
606 .vidioc_s_input = cx25821_vidioc_s_input,
607 .vidioc_log_status = vidioc_log_status,
608 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
609 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
610 };
611
612 static const struct video_device cx25821_video_device = {
613 .name = "cx25821-video",
614 .fops = &video_fops,
615 .release = video_device_release_empty,
616 .minor = -1,
617 .ioctl_ops = &video_ioctl_ops,
618 .tvnorms = CX25821_NORMS,
619 .device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE |
620 V4L2_CAP_STREAMING,
621 };
622
623 static const struct v4l2_file_operations video_out_fops = {
624 .owner = THIS_MODULE,
625 .open = v4l2_fh_open,
626 .release = vb2_fop_release,
627 .write = vb2_fop_write,
628 .poll = vb2_fop_poll,
629 .unlocked_ioctl = video_ioctl2,
630 .mmap = vb2_fop_mmap,
631 };
632
633 static const struct v4l2_ioctl_ops video_out_ioctl_ops = {
634 .vidioc_querycap = cx25821_vidioc_querycap,
635 .vidioc_enum_fmt_vid_out = cx25821_vidioc_enum_fmt_vid_cap,
636 .vidioc_g_fmt_vid_out = cx25821_vidioc_g_fmt_vid_cap,
637 .vidioc_try_fmt_vid_out = cx25821_vidioc_try_fmt_vid_out,
638 .vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out,
639 .vidioc_g_std = cx25821_vidioc_g_std,
640 .vidioc_s_std = cx25821_vidioc_s_std,
641 .vidioc_enum_output = cx25821_vidioc_enum_output,
642 .vidioc_g_output = cx25821_vidioc_g_output,
643 .vidioc_s_output = cx25821_vidioc_s_output,
644 .vidioc_log_status = vidioc_log_status,
645 };
646
647 static const struct video_device cx25821_video_out_device = {
648 .name = "cx25821-video",
649 .fops = &video_out_fops,
650 .release = video_device_release_empty,
651 .minor = -1,
652 .ioctl_ops = &video_out_ioctl_ops,
653 .tvnorms = CX25821_NORMS,
654 .device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_READWRITE,
655 };
656
657 void cx25821_video_unregister(struct cx25821_dev *dev, int chan_num)
658 {
659 cx_clear(PCI_INT_MSK, 1);
660
661 if (video_is_registered(&dev->channels[chan_num].vdev)) {
662 video_unregister_device(&dev->channels[chan_num].vdev);
663 v4l2_ctrl_handler_free(&dev->channels[chan_num].hdl);
664 }
665 }
666
667 int cx25821_video_register(struct cx25821_dev *dev)
668 {
669 int err;
670 int i;
671
672 /* initial device configuration */
673 dev->tvnorm = V4L2_STD_NTSC_M;
674
675 spin_lock_init(&dev->slock);
676
677 for (i = 0; i < MAX_VID_CAP_CHANNEL_NUM - 1; ++i) {
678 struct cx25821_channel *chan = &dev->channels[i];
679 struct video_device *vdev = &chan->vdev;
680 struct v4l2_ctrl_handler *hdl = &chan->hdl;
681 struct vb2_queue *q;
682 bool is_output = i > SRAM_CH08;
683
684 if (i == SRAM_CH08) /* audio channel */
685 continue;
686
687 if (!is_output) {
688 v4l2_ctrl_handler_init(hdl, 4);
689 v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops,
690 V4L2_CID_BRIGHTNESS, 0, 10000, 1, 6200);
691 v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops,
692 V4L2_CID_CONTRAST, 0, 10000, 1, 5000);
693 v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops,
694 V4L2_CID_SATURATION, 0, 10000, 1, 5000);
695 v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops,
696 V4L2_CID_HUE, 0, 10000, 1, 5000);
697 if (hdl->error) {
698 err = hdl->error;
699 goto fail_unreg;
700 }
701 err = v4l2_ctrl_handler_setup(hdl);
702 if (err)
703 goto fail_unreg;
704 } else {
705 chan->out = &dev->vid_out_data[i - SRAM_CH09];
706 chan->out->chan = chan;
707 }
708
709 chan->sram_channels = &cx25821_sram_channels[i];
710 chan->width = 720;
711 chan->field = V4L2_FIELD_INTERLACED;
712 if (dev->tvnorm & V4L2_STD_625_50)
713 chan->height = 576;
714 else
715 chan->height = 480;
716
717 if (chan->pixel_formats == PIXEL_FRMT_411)
718 chan->fmt = cx25821_format_by_fourcc(V4L2_PIX_FMT_Y41P);
719 else
720 chan->fmt = cx25821_format_by_fourcc(V4L2_PIX_FMT_YUYV);
721
722 cx_write(chan->sram_channels->int_stat, 0xffffffff);
723
724 INIT_LIST_HEAD(&chan->dma_vidq.active);
725
726 q = &chan->vidq;
727
728 q->type = is_output ? V4L2_BUF_TYPE_VIDEO_OUTPUT :
729 V4L2_BUF_TYPE_VIDEO_CAPTURE;
730 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
731 q->io_modes |= is_output ? VB2_WRITE : VB2_READ;
732 q->gfp_flags = GFP_DMA32;
733 q->min_buffers_needed = 2;
734 q->drv_priv = chan;
735 q->buf_struct_size = sizeof(struct cx25821_buffer);
736 q->ops = &cx25821_video_qops;
737 q->mem_ops = &vb2_dma_sg_memops;
738 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
739 q->lock = &dev->lock;
740 q->dev = &dev->pci->dev;
741
742 if (!is_output) {
743 err = vb2_queue_init(q);
744 if (err < 0)
745 goto fail_unreg;
746 }
747
748 /* register v4l devices */
749 *vdev = is_output ? cx25821_video_out_device : cx25821_video_device;
750 vdev->v4l2_dev = &dev->v4l2_dev;
751 if (!is_output)
752 vdev->ctrl_handler = hdl;
753 else
754 vdev->vfl_dir = VFL_DIR_TX;
755 vdev->lock = &dev->lock;
756 vdev->queue = q;
757 snprintf(vdev->name, sizeof(vdev->name), "%s #%d", dev->name, i);
758 video_set_drvdata(vdev, chan);
759
760 err = video_register_device(vdev, VFL_TYPE_GRABBER,
761 video_nr[dev->nr]);
762
763 if (err < 0)
764 goto fail_unreg;
765 }
766
767 /* set PCI interrupt */
768 cx_set(PCI_INT_MSK, 0xff);
769
770 return 0;
771
772 fail_unreg:
773 while (i >= 0)
774 cx25821_video_unregister(dev, i--);
775 return err;
776 }
Linux with added FPC-III support