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Merge tag 'trace-printf-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/trace...
[drm/drm-misc.git] / drivers / media / pci / cx25821 / cx25821-video.c
blob84aa1209e7171ecc541a764fea064e031ce2bb6e
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 .start_streaming = cx25821_start_streaming,
299 .stop_streaming = cx25821_stop_streaming,
300 };
301
302 /* VIDEO IOCTLS */
303
304 static 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
315 static 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
331 static 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
369 static 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
405 static 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
419 static 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
434 static 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
442 static 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
460 static 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
472 static int cx25821_vidioc_g_input(struct file *file, void *priv, unsigned int *i)
473 {
474 *i = 0;
475 return 0;
476 }
477
478 static int cx25821_vidioc_s_input(struct file *file, void *priv, unsigned int i)
479 {
480 return i ? -EINVAL : 0;
481 }
482
483 static 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
508 static 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
520 static int cx25821_vidioc_g_output(struct file *file, void *priv, unsigned int *o)
521 {
522 *o = 0;
523 return 0;
524 }
525
526 static int cx25821_vidioc_s_output(struct file *file, void *priv, unsigned int o)
527 {
528 return o ? -EINVAL : 0;
529 }
530
531 static 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
550 static 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
572 static const struct v4l2_ctrl_ops cx25821_ctrl_ops = {
573 .s_ctrl = cx25821_s_ctrl,
574 };
575
576 static 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
586 static 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
610 static 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
621 static 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
631 static 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
645 static 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
655 void 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
665 int 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
770 fail_unreg:
771 while (i >= 0)
772 cx25821_video_unregister(dev, i--);
773 return err;
774 }
Kernel DRM miscellaneous fixes and cross-tree changes