1 // SPDX-License-Identifier: GPL-2.0
2 // Copyright (C) 2018 Intel Corporation
3
4 #include <linux/module.h>
5 #include <linux/pm_runtime.h>
6
7 #include <media/v4l2-event.h>
8 #include <media/v4l2-ioctl.h>
9
10 #include "ipu3.h"
11 #include "ipu3-dmamap.h"
12
13 /******************** v4l2_subdev_ops ********************/
14
15 #define IPU3_RUNNING_MODE_VIDEO 0
16 #define IPU3_RUNNING_MODE_STILL 1
17
imgu_subdev_open(struct v4l2_subdev * sd,struct v4l2_subdev_fh * fh)18 static int imgu_subdev_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
19 {
20 struct imgu_v4l2_subdev *imgu_sd = container_of(sd,
21 struct imgu_v4l2_subdev,
22 subdev);
23 struct imgu_device *imgu = v4l2_get_subdevdata(sd);
24 struct imgu_media_pipe *imgu_pipe = &imgu->imgu_pipe[imgu_sd->pipe];
25 struct v4l2_rect try_crop = {
26 .top = 0,
27 .left = 0,
28 };
29 unsigned int i;
30
31 try_crop.width =
32 imgu_pipe->nodes[IMGU_NODE_IN].vdev_fmt.fmt.pix_mp.width;
33 try_crop.height =
34 imgu_pipe->nodes[IMGU_NODE_IN].vdev_fmt.fmt.pix_mp.height;
35
36 /* Initialize try_fmt */
37 for (i = 0; i < IMGU_NODE_NUM; i++) {
38 struct v4l2_mbus_framefmt *try_fmt =
39 v4l2_subdev_get_try_format(sd, fh->state, i);
40
41 try_fmt->width = try_crop.width;
42 try_fmt->height = try_crop.height;
43 try_fmt->code = imgu_pipe->nodes[i].pad_fmt.code;
44 try_fmt->field = V4L2_FIELD_NONE;
45 }
46
47 *v4l2_subdev_get_try_crop(sd, fh->state, IMGU_NODE_IN) = try_crop;
48 *v4l2_subdev_get_try_compose(sd, fh->state, IMGU_NODE_IN) = try_crop;
49
50 return 0;
51 }
52
imgu_subdev_s_stream(struct v4l2_subdev * sd,int enable)53 static int imgu_subdev_s_stream(struct v4l2_subdev *sd, int enable)
54 {
55 int i;
56 unsigned int node;
57 int r = 0;
58 struct imgu_device *imgu = v4l2_get_subdevdata(sd);
59 struct imgu_v4l2_subdev *imgu_sd = container_of(sd,
60 struct imgu_v4l2_subdev,
61 subdev);
62 unsigned int pipe = imgu_sd->pipe;
63 struct device *dev = &imgu->pci_dev->dev;
64 struct v4l2_pix_format_mplane *fmts[IPU3_CSS_QUEUES] = { NULL };
65 struct v4l2_rect *rects[IPU3_CSS_RECTS] = { NULL };
66 struct imgu_css_pipe *css_pipe = &imgu->css.pipes[pipe];
67 struct imgu_media_pipe *imgu_pipe = &imgu->imgu_pipe[pipe];
68
69 dev_dbg(dev, "%s %d for pipe %u", __func__, enable, pipe);
70 /* grab ctrl after streamon and return after off */
71 v4l2_ctrl_grab(imgu_sd->ctrl, enable);
72
73 if (!enable) {
74 imgu_sd->active = false;
75 return 0;
76 }
77
78 for (i = 0; i < IMGU_NODE_NUM; i++)
79 imgu_pipe->queue_enabled[i] = imgu_pipe->nodes[i].enabled;
80
81 /* This is handled specially */
82 imgu_pipe->queue_enabled[IPU3_CSS_QUEUE_PARAMS] = false;
83
84 /* Initialize CSS formats */
85 for (i = 0; i < IPU3_CSS_QUEUES; i++) {
86 node = imgu_map_node(imgu, i);
87 /* No need to reconfig meta nodes */
88 if (node == IMGU_NODE_STAT_3A || node == IMGU_NODE_PARAMS)
89 continue;
90 fmts[i] = imgu_pipe->queue_enabled[node] ?
91 &imgu_pipe->nodes[node].vdev_fmt.fmt.pix_mp : NULL;
92 }
93
94 /* Enable VF output only when VF queue requested by user */
95 css_pipe->vf_output_en = false;
96 if (imgu_pipe->nodes[IMGU_NODE_VF].enabled)
97 css_pipe->vf_output_en = true;
98
99 if (atomic_read(&imgu_sd->running_mode) == IPU3_RUNNING_MODE_VIDEO)
100 css_pipe->pipe_id = IPU3_CSS_PIPE_ID_VIDEO;
101 else
102 css_pipe->pipe_id = IPU3_CSS_PIPE_ID_CAPTURE;
103
104 dev_dbg(dev, "IPU3 pipe %u pipe_id %u", pipe, css_pipe->pipe_id);
105
106 rects[IPU3_CSS_RECT_EFFECTIVE] = &imgu_sd->rect.eff;
107 rects[IPU3_CSS_RECT_BDS] = &imgu_sd->rect.bds;
108 rects[IPU3_CSS_RECT_GDC] = &imgu_sd->rect.gdc;
109
110 r = imgu_css_fmt_set(&imgu->css, fmts, rects, pipe);
111 if (r) {
112 dev_err(dev, "failed to set initial formats pipe %u with (%d)",
113 pipe, r);
114 return r;
115 }
116
117 imgu_sd->active = true;
118
119 return 0;
120 }
121
imgu_subdev_get_fmt(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_format * fmt)122 static int imgu_subdev_get_fmt(struct v4l2_subdev *sd,
123 struct v4l2_subdev_state *sd_state,
124 struct v4l2_subdev_format *fmt)
125 {
126 struct imgu_device *imgu = v4l2_get_subdevdata(sd);
127 struct v4l2_mbus_framefmt *mf;
128 struct imgu_media_pipe *imgu_pipe;
129 u32 pad = fmt->pad;
130 struct imgu_v4l2_subdev *imgu_sd = container_of(sd,
131 struct imgu_v4l2_subdev,
132 subdev);
133 unsigned int pipe = imgu_sd->pipe;
134
135 imgu_pipe = &imgu->imgu_pipe[pipe];
136 if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
137 fmt->format = imgu_pipe->nodes[pad].pad_fmt;
138 } else {
139 mf = v4l2_subdev_get_try_format(sd, sd_state, pad);
140 fmt->format = *mf;
141 }
142
143 return 0;
144 }
145
imgu_subdev_set_fmt(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_format * fmt)146 static int imgu_subdev_set_fmt(struct v4l2_subdev *sd,
147 struct v4l2_subdev_state *sd_state,
148 struct v4l2_subdev_format *fmt)
149 {
150 struct imgu_media_pipe *imgu_pipe;
151 struct imgu_device *imgu = v4l2_get_subdevdata(sd);
152 struct imgu_v4l2_subdev *imgu_sd = container_of(sd,
153 struct imgu_v4l2_subdev,
154 subdev);
155 struct v4l2_mbus_framefmt *mf;
156 u32 pad = fmt->pad;
157 unsigned int pipe = imgu_sd->pipe;
158
159 dev_dbg(&imgu->pci_dev->dev, "set subdev %u pad %u fmt to [%ux%u]",
160 pipe, pad, fmt->format.width, fmt->format.height);
161
162 imgu_pipe = &imgu->imgu_pipe[pipe];
163 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY)
164 mf = v4l2_subdev_get_try_format(sd, sd_state, pad);
165 else
166 mf = &imgu_pipe->nodes[pad].pad_fmt;
167
168 fmt->format.code = mf->code;
169 /* Clamp the w and h based on the hardware capabilities */
170 if (imgu_sd->subdev_pads[pad].flags & MEDIA_PAD_FL_SOURCE) {
171 fmt->format.width = clamp(fmt->format.width,
172 IPU3_OUTPUT_MIN_WIDTH,
173 IPU3_OUTPUT_MAX_WIDTH);
174 fmt->format.height = clamp(fmt->format.height,
175 IPU3_OUTPUT_MIN_HEIGHT,
176 IPU3_OUTPUT_MAX_HEIGHT);
177 } else {
178 fmt->format.width = clamp(fmt->format.width,
179 IPU3_INPUT_MIN_WIDTH,
180 IPU3_INPUT_MAX_WIDTH);
181 fmt->format.height = clamp(fmt->format.height,
182 IPU3_INPUT_MIN_HEIGHT,
183 IPU3_INPUT_MAX_HEIGHT);
184 }
185
186 *mf = fmt->format;
187
188 return 0;
189 }
190
imgu_subdev_get_selection(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_selection * sel)191 static int imgu_subdev_get_selection(struct v4l2_subdev *sd,
192 struct v4l2_subdev_state *sd_state,
193 struct v4l2_subdev_selection *sel)
194 {
195 struct v4l2_rect *try_sel, *r;
196 struct imgu_v4l2_subdev *imgu_sd = container_of(sd,
197 struct imgu_v4l2_subdev,
198 subdev);
199
200 if (sel->pad != IMGU_NODE_IN)
201 return -EINVAL;
202
203 switch (sel->target) {
204 case V4L2_SEL_TGT_CROP:
205 try_sel = v4l2_subdev_get_try_crop(sd, sd_state, sel->pad);
206 r = &imgu_sd->rect.eff;
207 break;
208 case V4L2_SEL_TGT_COMPOSE:
209 try_sel = v4l2_subdev_get_try_compose(sd, sd_state, sel->pad);
210 r = &imgu_sd->rect.bds;
211 break;
212 default:
213 return -EINVAL;
214 }
215
216 if (sel->which == V4L2_SUBDEV_FORMAT_TRY)
217 sel->r = *try_sel;
218 else
219 sel->r = *r;
220
221 return 0;
222 }
223
imgu_subdev_set_selection(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_selection * sel)224 static int imgu_subdev_set_selection(struct v4l2_subdev *sd,
225 struct v4l2_subdev_state *sd_state,
226 struct v4l2_subdev_selection *sel)
227 {
228 struct imgu_device *imgu = v4l2_get_subdevdata(sd);
229 struct imgu_v4l2_subdev *imgu_sd = container_of(sd,
230 struct imgu_v4l2_subdev,
231 subdev);
232 struct v4l2_rect *rect, *try_sel;
233
234 dev_dbg(&imgu->pci_dev->dev,
235 "set subdev %u sel which %u target 0x%4x rect [%ux%u]",
236 imgu_sd->pipe, sel->which, sel->target,
237 sel->r.width, sel->r.height);
238
239 if (sel->pad != IMGU_NODE_IN)
240 return -EINVAL;
241
242 switch (sel->target) {
243 case V4L2_SEL_TGT_CROP:
244 try_sel = v4l2_subdev_get_try_crop(sd, sd_state, sel->pad);
245 rect = &imgu_sd->rect.eff;
246 break;
247 case V4L2_SEL_TGT_COMPOSE:
248 try_sel = v4l2_subdev_get_try_compose(sd, sd_state, sel->pad);
249 rect = &imgu_sd->rect.bds;
250 break;
251 default:
252 return -EINVAL;
253 }
254
255 if (sel->which == V4L2_SUBDEV_FORMAT_TRY)
256 *try_sel = sel->r;
257 else
258 *rect = sel->r;
259
260 return 0;
261 }
262
263 /******************** media_entity_operations ********************/
264
imgu_link_setup(struct media_entity * entity,const struct media_pad * local,const struct media_pad * remote,u32 flags)265 static int imgu_link_setup(struct media_entity *entity,
266 const struct media_pad *local,
267 const struct media_pad *remote, u32 flags)
268 {
269 struct imgu_media_pipe *imgu_pipe;
270 struct v4l2_subdev *sd = container_of(entity, struct v4l2_subdev,
271 entity);
272 struct imgu_device *imgu = v4l2_get_subdevdata(sd);
273 struct imgu_v4l2_subdev *imgu_sd = container_of(sd,
274 struct imgu_v4l2_subdev,
275 subdev);
276 unsigned int pipe = imgu_sd->pipe;
277 u32 pad = local->index;
278
279 WARN_ON(pad >= IMGU_NODE_NUM);
280
281 dev_dbg(&imgu->pci_dev->dev, "pipe %u pad %u is %s", pipe, pad,
282 flags & MEDIA_LNK_FL_ENABLED ? "enabled" : "disabled");
283
284 imgu_pipe = &imgu->imgu_pipe[pipe];
285 imgu_pipe->nodes[pad].enabled = flags & MEDIA_LNK_FL_ENABLED;
286
287 /* enable input node to enable the pipe */
288 if (pad != IMGU_NODE_IN)
289 return 0;
290
291 if (flags & MEDIA_LNK_FL_ENABLED)
292 __set_bit(pipe, imgu->css.enabled_pipes);
293 else
294 __clear_bit(pipe, imgu->css.enabled_pipes);
295
296 dev_dbg(&imgu->pci_dev->dev, "pipe %u is %s", pipe,
297 flags & MEDIA_LNK_FL_ENABLED ? "enabled" : "disabled");
298
299 return 0;
300 }
301
302 /******************** vb2_ops ********************/
303
imgu_vb2_buf_init(struct vb2_buffer * vb)304 static int imgu_vb2_buf_init(struct vb2_buffer *vb)
305 {
306 struct sg_table *sg = vb2_dma_sg_plane_desc(vb, 0);
307 struct imgu_device *imgu = vb2_get_drv_priv(vb->vb2_queue);
308 struct imgu_buffer *buf = container_of(vb,
309 struct imgu_buffer, vid_buf.vbb.vb2_buf);
310 struct imgu_video_device *node =
311 container_of(vb->vb2_queue, struct imgu_video_device, vbq);
312 unsigned int queue = imgu_node_to_queue(node->id);
313
314 if (queue == IPU3_CSS_QUEUE_PARAMS)
315 return 0;
316
317 return imgu_dmamap_map_sg(imgu, sg->sgl, sg->nents, &buf->map);
318 }
319
320 /* Called when each buffer is freed */
imgu_vb2_buf_cleanup(struct vb2_buffer * vb)321 static void imgu_vb2_buf_cleanup(struct vb2_buffer *vb)
322 {
323 struct imgu_device *imgu = vb2_get_drv_priv(vb->vb2_queue);
324 struct imgu_buffer *buf = container_of(vb,
325 struct imgu_buffer, vid_buf.vbb.vb2_buf);
326 struct imgu_video_device *node =
327 container_of(vb->vb2_queue, struct imgu_video_device, vbq);
328 unsigned int queue = imgu_node_to_queue(node->id);
329
330 if (queue == IPU3_CSS_QUEUE_PARAMS)
331 return;
332
333 imgu_dmamap_unmap(imgu, &buf->map);
334 }
335
336 /* Transfer buffer ownership to me */
imgu_vb2_buf_queue(struct vb2_buffer * vb)337 static void imgu_vb2_buf_queue(struct vb2_buffer *vb)
338 {
339 struct imgu_device *imgu = vb2_get_drv_priv(vb->vb2_queue);
340 struct imgu_video_device *node =
341 container_of(vb->vb2_queue, struct imgu_video_device, vbq);
342 unsigned int queue = imgu_node_to_queue(node->id);
343 struct imgu_buffer *buf = container_of(vb, struct imgu_buffer,
344 vid_buf.vbb.vb2_buf);
345 unsigned long need_bytes;
346 unsigned long payload = vb2_get_plane_payload(vb, 0);
347
348 if (vb->vb2_queue->type == V4L2_BUF_TYPE_META_CAPTURE ||
349 vb->vb2_queue->type == V4L2_BUF_TYPE_META_OUTPUT)
350 need_bytes = node->vdev_fmt.fmt.meta.buffersize;
351 else
352 need_bytes = node->vdev_fmt.fmt.pix_mp.plane_fmt[0].sizeimage;
353
354 if (queue == IPU3_CSS_QUEUE_PARAMS && payload && payload < need_bytes) {
355 dev_err(&imgu->pci_dev->dev, "invalid data size for params.");
356 vb2_buffer_done(vb, VB2_BUF_STATE_ERROR);
357 return;
358 }
359
360 mutex_lock(&imgu->lock);
361 if (queue != IPU3_CSS_QUEUE_PARAMS)
362 imgu_css_buf_init(&buf->css_buf, queue, buf->map.daddr);
363
364 list_add_tail(&buf->vid_buf.list, &node->buffers);
365 mutex_unlock(&imgu->lock);
366
367 vb2_set_plane_payload(vb, 0, need_bytes);
368
369 mutex_lock(&imgu->streaming_lock);
370 if (imgu->streaming)
371 imgu_queue_buffers(imgu, false, node->pipe);
372 mutex_unlock(&imgu->streaming_lock);
373
374 dev_dbg(&imgu->pci_dev->dev, "%s for pipe %u node %u", __func__,
375 node->pipe, node->id);
376 }
377
imgu_vb2_queue_setup(struct vb2_queue * vq,unsigned int * num_buffers,unsigned int * num_planes,unsigned int sizes[],struct device * alloc_devs[])378 static int imgu_vb2_queue_setup(struct vb2_queue *vq,
379 unsigned int *num_buffers,
380 unsigned int *num_planes,
381 unsigned int sizes[],
382 struct device *alloc_devs[])
383 {
384 struct imgu_device *imgu = vb2_get_drv_priv(vq);
385 struct imgu_video_device *node =
386 container_of(vq, struct imgu_video_device, vbq);
387 const struct v4l2_format *fmt = &node->vdev_fmt;
388 unsigned int size;
389
390 *num_buffers = clamp_val(*num_buffers, 1, VB2_MAX_FRAME);
391 alloc_devs[0] = &imgu->pci_dev->dev;
392
393 if (vq->type == V4L2_BUF_TYPE_META_CAPTURE ||
394 vq->type == V4L2_BUF_TYPE_META_OUTPUT)
395 size = fmt->fmt.meta.buffersize;
396 else
397 size = fmt->fmt.pix_mp.plane_fmt[0].sizeimage;
398
399 if (*num_planes) {
400 if (sizes[0] < size)
401 return -EINVAL;
402 size = sizes[0];
403 }
404
405 *num_planes = 1;
406 sizes[0] = size;
407
408 /* Initialize buffer queue */
409 INIT_LIST_HEAD(&node->buffers);
410
411 return 0;
412 }
413
414 /* Check if all enabled video nodes are streaming, exception ignored */
imgu_all_nodes_streaming(struct imgu_device * imgu,struct imgu_video_device * except)415 static bool imgu_all_nodes_streaming(struct imgu_device *imgu,
416 struct imgu_video_device *except)
417 {
418 unsigned int i, pipe, p;
419 struct imgu_video_device *node;
420 struct device *dev = &imgu->pci_dev->dev;
421
422 pipe = except->pipe;
423 if (!test_bit(pipe, imgu->css.enabled_pipes)) {
424 dev_warn(&imgu->pci_dev->dev,
425 "pipe %u link is not ready yet", pipe);
426 return false;
427 }
428
429 for_each_set_bit(p, imgu->css.enabled_pipes, IMGU_MAX_PIPE_NUM) {
430 for (i = 0; i < IMGU_NODE_NUM; i++) {
431 node = &imgu->imgu_pipe[p].nodes[i];
432 dev_dbg(dev, "%s pipe %u queue %u name %s enabled = %u",
433 __func__, p, i, node->name, node->enabled);
434 if (node == except)
435 continue;
436 if (node->enabled && !vb2_start_streaming_called(&node->vbq))
437 return false;
438 }
439 }
440
441 return true;
442 }
443
imgu_return_all_buffers(struct imgu_device * imgu,struct imgu_video_device * node,enum vb2_buffer_state state)444 static void imgu_return_all_buffers(struct imgu_device *imgu,
445 struct imgu_video_device *node,
446 enum vb2_buffer_state state)
447 {
448 struct imgu_vb2_buffer *b, *b0;
449
450 /* Return all buffers */
451 mutex_lock(&imgu->lock);
452 list_for_each_entry_safe(b, b0, &node->buffers, list) {
453 list_del(&b->list);
454 vb2_buffer_done(&b->vbb.vb2_buf, state);
455 }
456 mutex_unlock(&imgu->lock);
457 }
458
imgu_vb2_start_streaming(struct vb2_queue * vq,unsigned int count)459 static int imgu_vb2_start_streaming(struct vb2_queue *vq, unsigned int count)
460 {
461 struct imgu_media_pipe *imgu_pipe;
462 struct imgu_device *imgu = vb2_get_drv_priv(vq);
463 struct device *dev = &imgu->pci_dev->dev;
464 struct imgu_video_device *node =
465 container_of(vq, struct imgu_video_device, vbq);
466 int r;
467 unsigned int pipe;
468
469 dev_dbg(dev, "%s node name %s pipe %u id %u", __func__,
470 node->name, node->pipe, node->id);
471
472 mutex_lock(&imgu->streaming_lock);
473 if (imgu->streaming) {
474 r = -EBUSY;
475 mutex_unlock(&imgu->streaming_lock);
476 goto fail_return_bufs;
477 }
478 mutex_unlock(&imgu->streaming_lock);
479
480 if (!node->enabled) {
481 dev_err(dev, "IMGU node is not enabled");
482 r = -EINVAL;
483 goto fail_return_bufs;
484 }
485
486 pipe = node->pipe;
487 imgu_pipe = &imgu->imgu_pipe[pipe];
488 r = media_pipeline_start(&node->vdev.entity, &imgu_pipe->pipeline);
489 if (r < 0)
490 goto fail_return_bufs;
491
492 if (!imgu_all_nodes_streaming(imgu, node))
493 return 0;
494
495 for_each_set_bit(pipe, imgu->css.enabled_pipes, IMGU_MAX_PIPE_NUM) {
496 r = v4l2_subdev_call(&imgu->imgu_pipe[pipe].imgu_sd.subdev,
497 video, s_stream, 1);
498 if (r < 0)
499 goto fail_stop_pipeline;
500 }
501
502 /* Start streaming of the whole pipeline now */
503 dev_dbg(dev, "IMGU streaming is ready to start");
504 mutex_lock(&imgu->streaming_lock);
505 r = imgu_s_stream(imgu, true);
506 if (!r)
507 imgu->streaming = true;
508 mutex_unlock(&imgu->streaming_lock);
509
510 return 0;
511
512 fail_stop_pipeline:
513 media_pipeline_stop(&node->vdev.entity);
514 fail_return_bufs:
515 imgu_return_all_buffers(imgu, node, VB2_BUF_STATE_QUEUED);
516
517 return r;
518 }
519
imgu_vb2_stop_streaming(struct vb2_queue * vq)520 static void imgu_vb2_stop_streaming(struct vb2_queue *vq)
521 {
522 struct imgu_media_pipe *imgu_pipe;
523 struct imgu_device *imgu = vb2_get_drv_priv(vq);
524 struct device *dev = &imgu->pci_dev->dev;
525 struct imgu_video_device *node =
526 container_of(vq, struct imgu_video_device, vbq);
527 int r;
528 unsigned int pipe;
529
530 WARN_ON(!node->enabled);
531
532 pipe = node->pipe;
533 dev_dbg(dev, "Try to stream off node [%u][%u]", pipe, node->id);
534 imgu_pipe = &imgu->imgu_pipe[pipe];
535 r = v4l2_subdev_call(&imgu_pipe->imgu_sd.subdev, video, s_stream, 0);
536 if (r)
537 dev_err(&imgu->pci_dev->dev,
538 "failed to stop subdev streaming\n");
539
540 mutex_lock(&imgu->streaming_lock);
541 /* Was this the first node with streaming disabled? */
542 if (imgu->streaming && imgu_all_nodes_streaming(imgu, node)) {
543 /* Yes, really stop streaming now */
544 dev_dbg(dev, "IMGU streaming is ready to stop");
545 r = imgu_s_stream(imgu, false);
546 if (!r)
547 imgu->streaming = false;
548 }
549
550 imgu_return_all_buffers(imgu, node, VB2_BUF_STATE_ERROR);
551 mutex_unlock(&imgu->streaming_lock);
552
553 media_pipeline_stop(&node->vdev.entity);
554 }
555
556 /******************** v4l2_ioctl_ops ********************/
557
558 #define VID_CAPTURE 0
559 #define VID_OUTPUT 1
560 #define DEF_VID_CAPTURE 0
561 #define DEF_VID_OUTPUT 1
562
563 struct imgu_fmt {
564 u32 fourcc;
565 u16 type; /* VID_CAPTURE or VID_OUTPUT not both */
566 };
567
568 /* format descriptions for capture and preview */
569 static const struct imgu_fmt formats[] = {
570 { V4L2_PIX_FMT_NV12, VID_CAPTURE },
571 { V4L2_PIX_FMT_IPU3_SGRBG10, VID_OUTPUT },
572 { V4L2_PIX_FMT_IPU3_SBGGR10, VID_OUTPUT },
573 { V4L2_PIX_FMT_IPU3_SGBRG10, VID_OUTPUT },
574 { V4L2_PIX_FMT_IPU3_SRGGB10, VID_OUTPUT },
575 };
576
577 /* Find the first matched format, return default if not found */
find_format(struct v4l2_format * f,u32 type)578 static const struct imgu_fmt *find_format(struct v4l2_format *f, u32 type)
579 {
580 unsigned int i;
581
582 for (i = 0; i < ARRAY_SIZE(formats); i++) {
583 if (formats[i].fourcc == f->fmt.pix_mp.pixelformat &&
584 formats[i].type == type)
585 return &formats[i];
586 }
587
588 return type == VID_CAPTURE ? &formats[DEF_VID_CAPTURE] :
589 &formats[DEF_VID_OUTPUT];
590 }
591
imgu_vidioc_querycap(struct file * file,void * fh,struct v4l2_capability * cap)592 static int imgu_vidioc_querycap(struct file *file, void *fh,
593 struct v4l2_capability *cap)
594 {
595 struct imgu_video_device *node = file_to_intel_imgu_node(file);
596
597 strscpy(cap->driver, IMGU_NAME, sizeof(cap->driver));
598 strscpy(cap->card, IMGU_NAME, sizeof(cap->card));
599 snprintf(cap->bus_info, sizeof(cap->bus_info), "PCI:%s", node->name);
600
601 return 0;
602 }
603
enum_fmts(struct v4l2_fmtdesc * f,u32 type)604 static int enum_fmts(struct v4l2_fmtdesc *f, u32 type)
605 {
606 unsigned int i, j;
607
608 if (f->mbus_code != 0 && f->mbus_code != MEDIA_BUS_FMT_FIXED)
609 return -EINVAL;
610
611 for (i = j = 0; i < ARRAY_SIZE(formats); ++i) {
612 if (formats[i].type == type) {
613 if (j == f->index)
614 break;
615 ++j;
616 }
617 }
618
619 if (i < ARRAY_SIZE(formats)) {
620 f->pixelformat = formats[i].fourcc;
621 return 0;
622 }
623
624 return -EINVAL;
625 }
626
vidioc_enum_fmt_vid_cap(struct file * file,void * priv,struct v4l2_fmtdesc * f)627 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
628 struct v4l2_fmtdesc *f)
629 {
630 if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
631 return -EINVAL;
632
633 return enum_fmts(f, VID_CAPTURE);
634 }
635
vidioc_enum_fmt_vid_out(struct file * file,void * priv,struct v4l2_fmtdesc * f)636 static int vidioc_enum_fmt_vid_out(struct file *file, void *priv,
637 struct v4l2_fmtdesc *f)
638 {
639 if (f->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
640 return -EINVAL;
641
642 return enum_fmts(f, VID_OUTPUT);
643 }
644
645 /* Propagate forward always the format from the CIO2 subdev */
imgu_vidioc_g_fmt(struct file * file,void * fh,struct v4l2_format * f)646 static int imgu_vidioc_g_fmt(struct file *file, void *fh,
647 struct v4l2_format *f)
648 {
649 struct imgu_video_device *node = file_to_intel_imgu_node(file);
650
651 f->fmt = node->vdev_fmt.fmt;
652
653 return 0;
654 }
655
656 /*
657 * Set input/output format. Unless it is just a try, this also resets
658 * selections (ie. effective and BDS resolutions) to defaults.
659 */
imgu_fmt(struct imgu_device * imgu,unsigned int pipe,int node,struct v4l2_format * f,bool try)660 static int imgu_fmt(struct imgu_device *imgu, unsigned int pipe, int node,
661 struct v4l2_format *f, bool try)
662 {
663 struct device *dev = &imgu->pci_dev->dev;
664 struct v4l2_pix_format_mplane *fmts[IPU3_CSS_QUEUES] = { NULL };
665 struct v4l2_rect *rects[IPU3_CSS_RECTS] = { NULL };
666 struct v4l2_mbus_framefmt pad_fmt;
667 unsigned int i, css_q;
668 int ret;
669 struct imgu_css_pipe *css_pipe = &imgu->css.pipes[pipe];
670 struct imgu_media_pipe *imgu_pipe = &imgu->imgu_pipe[pipe];
671 struct imgu_v4l2_subdev *imgu_sd = &imgu_pipe->imgu_sd;
672
673 dev_dbg(dev, "set fmt node [%u][%u](try = %u)", pipe, node, try);
674
675 for (i = 0; i < IMGU_NODE_NUM; i++)
676 dev_dbg(dev, "IMGU pipe %u node %u enabled = %u",
677 pipe, i, imgu_pipe->nodes[i].enabled);
678
679 if (imgu_pipe->nodes[IMGU_NODE_VF].enabled)
680 css_pipe->vf_output_en = true;
681
682 if (atomic_read(&imgu_sd->running_mode) == IPU3_RUNNING_MODE_VIDEO)
683 css_pipe->pipe_id = IPU3_CSS_PIPE_ID_VIDEO;
684 else
685 css_pipe->pipe_id = IPU3_CSS_PIPE_ID_CAPTURE;
686
687 dev_dbg(dev, "IPU3 pipe %u pipe_id = %u", pipe, css_pipe->pipe_id);
688
689 css_q = imgu_node_to_queue(node);
690 for (i = 0; i < IPU3_CSS_QUEUES; i++) {
691 unsigned int inode = imgu_map_node(imgu, i);
692
693 /* Skip the meta node */
694 if (inode == IMGU_NODE_STAT_3A || inode == IMGU_NODE_PARAMS)
695 continue;
696
697 /* CSS expects some format on OUT queue */
698 if (i != IPU3_CSS_QUEUE_OUT &&
699 !imgu_pipe->nodes[inode].enabled) {
700 fmts[i] = NULL;
701 continue;
702 }
703
704 if (i == css_q) {
705 fmts[i] = &f->fmt.pix_mp;
706 continue;
707 }
708
709 if (try) {
710 fmts[i] = kmemdup(&imgu_pipe->nodes[inode].vdev_fmt.fmt.pix_mp,
711 sizeof(struct v4l2_pix_format_mplane),
712 GFP_KERNEL);
713 if (!fmts[i]) {
714 ret = -ENOMEM;
715 goto out;
716 }
717 } else {
718 fmts[i] = &imgu_pipe->nodes[inode].vdev_fmt.fmt.pix_mp;
719 }
720
721 }
722
723 if (!try) {
724 /* eff and bds res got by imgu_s_sel */
725 struct imgu_v4l2_subdev *imgu_sd = &imgu_pipe->imgu_sd;
726
727 rects[IPU3_CSS_RECT_EFFECTIVE] = &imgu_sd->rect.eff;
728 rects[IPU3_CSS_RECT_BDS] = &imgu_sd->rect.bds;
729 rects[IPU3_CSS_RECT_GDC] = &imgu_sd->rect.gdc;
730
731 /* suppose that pad fmt was set by subdev s_fmt before */
732 pad_fmt = imgu_pipe->nodes[IMGU_NODE_IN].pad_fmt;
733 rects[IPU3_CSS_RECT_GDC]->width = pad_fmt.width;
734 rects[IPU3_CSS_RECT_GDC]->height = pad_fmt.height;
735 }
736
737 if (!fmts[css_q]) {
738 ret = -EINVAL;
739 goto out;
740 }
741
742 if (try)
743 ret = imgu_css_fmt_try(&imgu->css, fmts, rects, pipe);
744 else
745 ret = imgu_css_fmt_set(&imgu->css, fmts, rects, pipe);
746
747 /* ret is the binary number in the firmware blob */
748 if (ret < 0)
749 goto out;
750
751 /*
752 * imgu doesn't set the node to the value given by user
753 * before we return success from this function, so set it here.
754 */
755 if (!try)
756 imgu_pipe->nodes[node].vdev_fmt.fmt.pix_mp = f->fmt.pix_mp;
757
758 out:
759 if (try) {
760 for (i = 0; i < IPU3_CSS_QUEUES; i++)
761 if (i != css_q)
762 kfree(fmts[i]);
763 }
764
765 return ret;
766 }
767
imgu_try_fmt(struct file * file,void * fh,struct v4l2_format * f)768 static int imgu_try_fmt(struct file *file, void *fh, struct v4l2_format *f)
769 {
770 struct v4l2_pix_format_mplane *pixm = &f->fmt.pix_mp;
771 const struct imgu_fmt *fmt;
772
773 if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
774 fmt = find_format(f, VID_CAPTURE);
775 else if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
776 fmt = find_format(f, VID_OUTPUT);
777 else
778 return -EINVAL;
779
780 pixm->pixelformat = fmt->fourcc;
781
782 return 0;
783 }
784
imgu_vidioc_try_fmt(struct file * file,void * fh,struct v4l2_format * f)785 static int imgu_vidioc_try_fmt(struct file *file, void *fh,
786 struct v4l2_format *f)
787 {
788 struct imgu_device *imgu = video_drvdata(file);
789 struct device *dev = &imgu->pci_dev->dev;
790 struct imgu_video_device *node = file_to_intel_imgu_node(file);
791 struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
792 int r;
793
794 dev_dbg(dev, "%s [%ux%u] for node %u\n", __func__,
795 pix_mp->width, pix_mp->height, node->id);
796
797 r = imgu_try_fmt(file, fh, f);
798 if (r)
799 return r;
800
801 return imgu_fmt(imgu, node->pipe, node->id, f, true);
802 }
803
imgu_vidioc_s_fmt(struct file * file,void * fh,struct v4l2_format * f)804 static int imgu_vidioc_s_fmt(struct file *file, void *fh, struct v4l2_format *f)
805 {
806 struct imgu_device *imgu = video_drvdata(file);
807 struct device *dev = &imgu->pci_dev->dev;
808 struct imgu_video_device *node = file_to_intel_imgu_node(file);
809 struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
810 int r;
811
812 dev_dbg(dev, "%s [%ux%u] for node %u\n", __func__,
813 pix_mp->width, pix_mp->height, node->id);
814
815 r = imgu_try_fmt(file, fh, f);
816 if (r)
817 return r;
818
819 return imgu_fmt(imgu, node->pipe, node->id, f, false);
820 }
821
822 struct imgu_meta_fmt {
823 __u32 fourcc;
824 char *name;
825 };
826
827 /* From drivers/media/v4l2-core/v4l2-ioctl.c */
828 static const struct imgu_meta_fmt meta_fmts[] = {
829 { V4L2_META_FMT_IPU3_PARAMS, "IPU3 processing parameters" },
830 { V4L2_META_FMT_IPU3_STAT_3A, "IPU3 3A statistics" },
831 };
832
imgu_meta_enum_format(struct file * file,void * fh,struct v4l2_fmtdesc * fmt)833 static int imgu_meta_enum_format(struct file *file, void *fh,
834 struct v4l2_fmtdesc *fmt)
835 {
836 struct imgu_video_device *node = file_to_intel_imgu_node(file);
837 unsigned int i = fmt->type == V4L2_BUF_TYPE_META_OUTPUT ? 0 : 1;
838
839 /* Each node is dedicated to only one meta format */
840 if (fmt->index > 0 || fmt->type != node->vbq.type)
841 return -EINVAL;
842
843 if (fmt->mbus_code != 0 && fmt->mbus_code != MEDIA_BUS_FMT_FIXED)
844 return -EINVAL;
845
846 strscpy(fmt->description, meta_fmts[i].name, sizeof(fmt->description));
847 fmt->pixelformat = meta_fmts[i].fourcc;
848
849 return 0;
850 }
851
imgu_vidioc_g_meta_fmt(struct file * file,void * fh,struct v4l2_format * f)852 static int imgu_vidioc_g_meta_fmt(struct file *file, void *fh,
853 struct v4l2_format *f)
854 {
855 struct imgu_video_device *node = file_to_intel_imgu_node(file);
856
857 if (f->type != node->vbq.type)
858 return -EINVAL;
859
860 f->fmt = node->vdev_fmt.fmt;
861
862 return 0;
863 }
864
865 /******************** function pointers ********************/
866
867 static struct v4l2_subdev_internal_ops imgu_subdev_internal_ops = {
868 .open = imgu_subdev_open,
869 };
870
871 static const struct v4l2_subdev_core_ops imgu_subdev_core_ops = {
872 .subscribe_event = v4l2_ctrl_subdev_subscribe_event,
873 .unsubscribe_event = v4l2_event_subdev_unsubscribe,
874 };
875
876 static const struct v4l2_subdev_video_ops imgu_subdev_video_ops = {
877 .s_stream = imgu_subdev_s_stream,
878 };
879
880 static const struct v4l2_subdev_pad_ops imgu_subdev_pad_ops = {
881 .link_validate = v4l2_subdev_link_validate_default,
882 .get_fmt = imgu_subdev_get_fmt,
883 .set_fmt = imgu_subdev_set_fmt,
884 .get_selection = imgu_subdev_get_selection,
885 .set_selection = imgu_subdev_set_selection,
886 };
887
888 static const struct v4l2_subdev_ops imgu_subdev_ops = {
889 .core = &imgu_subdev_core_ops,
890 .video = &imgu_subdev_video_ops,
891 .pad = &imgu_subdev_pad_ops,
892 };
893
894 static const struct media_entity_operations imgu_media_ops = {
895 .link_setup = imgu_link_setup,
896 .link_validate = v4l2_subdev_link_validate,
897 };
898
899 /****************** vb2_ops of the Q ********************/
900
901 static const struct vb2_ops imgu_vb2_ops = {
902 .buf_init = imgu_vb2_buf_init,
903 .buf_cleanup = imgu_vb2_buf_cleanup,
904 .buf_queue = imgu_vb2_buf_queue,
905 .queue_setup = imgu_vb2_queue_setup,
906 .start_streaming = imgu_vb2_start_streaming,
907 .stop_streaming = imgu_vb2_stop_streaming,
908 .wait_prepare = vb2_ops_wait_prepare,
909 .wait_finish = vb2_ops_wait_finish,
910 };
911
912 /****************** v4l2_file_operations *****************/
913
914 static const struct v4l2_file_operations imgu_v4l2_fops = {
915 .unlocked_ioctl = video_ioctl2,
916 .open = v4l2_fh_open,
917 .release = vb2_fop_release,
918 .poll = vb2_fop_poll,
919 .mmap = vb2_fop_mmap,
920 };
921
922 /******************** v4l2_ioctl_ops ********************/
923
924 static const struct v4l2_ioctl_ops imgu_v4l2_ioctl_ops = {
925 .vidioc_querycap = imgu_vidioc_querycap,
926
927 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
928 .vidioc_g_fmt_vid_cap_mplane = imgu_vidioc_g_fmt,
929 .vidioc_s_fmt_vid_cap_mplane = imgu_vidioc_s_fmt,
930 .vidioc_try_fmt_vid_cap_mplane = imgu_vidioc_try_fmt,
931
932 .vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out,
933 .vidioc_g_fmt_vid_out_mplane = imgu_vidioc_g_fmt,
934 .vidioc_s_fmt_vid_out_mplane = imgu_vidioc_s_fmt,
935 .vidioc_try_fmt_vid_out_mplane = imgu_vidioc_try_fmt,
936
937 /* buffer queue management */
938 .vidioc_reqbufs = vb2_ioctl_reqbufs,
939 .vidioc_create_bufs = vb2_ioctl_create_bufs,
940 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
941 .vidioc_querybuf = vb2_ioctl_querybuf,
942 .vidioc_qbuf = vb2_ioctl_qbuf,
943 .vidioc_dqbuf = vb2_ioctl_dqbuf,
944 .vidioc_streamon = vb2_ioctl_streamon,
945 .vidioc_streamoff = vb2_ioctl_streamoff,
946 .vidioc_expbuf = vb2_ioctl_expbuf,
947 };
948
949 static const struct v4l2_ioctl_ops imgu_v4l2_meta_ioctl_ops = {
950 .vidioc_querycap = imgu_vidioc_querycap,
951
952 /* meta capture */
953 .vidioc_enum_fmt_meta_cap = imgu_meta_enum_format,
954 .vidioc_g_fmt_meta_cap = imgu_vidioc_g_meta_fmt,
955 .vidioc_s_fmt_meta_cap = imgu_vidioc_g_meta_fmt,
956 .vidioc_try_fmt_meta_cap = imgu_vidioc_g_meta_fmt,
957
958 /* meta output */
959 .vidioc_enum_fmt_meta_out = imgu_meta_enum_format,
960 .vidioc_g_fmt_meta_out = imgu_vidioc_g_meta_fmt,
961 .vidioc_s_fmt_meta_out = imgu_vidioc_g_meta_fmt,
962 .vidioc_try_fmt_meta_out = imgu_vidioc_g_meta_fmt,
963
964 .vidioc_reqbufs = vb2_ioctl_reqbufs,
965 .vidioc_create_bufs = vb2_ioctl_create_bufs,
966 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
967 .vidioc_querybuf = vb2_ioctl_querybuf,
968 .vidioc_qbuf = vb2_ioctl_qbuf,
969 .vidioc_dqbuf = vb2_ioctl_dqbuf,
970 .vidioc_streamon = vb2_ioctl_streamon,
971 .vidioc_streamoff = vb2_ioctl_streamoff,
972 .vidioc_expbuf = vb2_ioctl_expbuf,
973 };
974
imgu_sd_s_ctrl(struct v4l2_ctrl * ctrl)975 static int imgu_sd_s_ctrl(struct v4l2_ctrl *ctrl)
976 {
977 struct imgu_v4l2_subdev *imgu_sd =
978 container_of(ctrl->handler, struct imgu_v4l2_subdev, ctrl_handler);
979 struct imgu_device *imgu = v4l2_get_subdevdata(&imgu_sd->subdev);
980 struct device *dev = &imgu->pci_dev->dev;
981
982 dev_dbg(dev, "set val %d to ctrl 0x%8x for subdev %u",
983 ctrl->val, ctrl->id, imgu_sd->pipe);
984
985 switch (ctrl->id) {
986 case V4L2_CID_INTEL_IPU3_MODE:
987 atomic_set(&imgu_sd->running_mode, ctrl->val);
988 return 0;
989 default:
990 return -EINVAL;
991 }
992 }
993
994 static const struct v4l2_ctrl_ops imgu_subdev_ctrl_ops = {
995 .s_ctrl = imgu_sd_s_ctrl,
996 };
997
998 static const char * const imgu_ctrl_mode_strings[] = {
999 "Video mode",
1000 "Still mode",
1001 };
1002
1003 static const struct v4l2_ctrl_config imgu_subdev_ctrl_mode = {
1004 .ops = &imgu_subdev_ctrl_ops,
1005 .id = V4L2_CID_INTEL_IPU3_MODE,
1006 .name = "IPU3 Pipe Mode",
1007 .type = V4L2_CTRL_TYPE_MENU,
1008 .max = ARRAY_SIZE(imgu_ctrl_mode_strings) - 1,
1009 .def = IPU3_RUNNING_MODE_VIDEO,
1010 .qmenu = imgu_ctrl_mode_strings,
1011 };
1012
1013 /******************** Framework registration ********************/
1014
1015 /* helper function to config node's video properties */
imgu_node_to_v4l2(u32 node,struct video_device * vdev,struct v4l2_format * f)1016 static void imgu_node_to_v4l2(u32 node, struct video_device *vdev,
1017 struct v4l2_format *f)
1018 {
1019 u32 cap;
1020
1021 /* Should not happen */
1022 WARN_ON(node >= IMGU_NODE_NUM);
1023
1024 switch (node) {
1025 case IMGU_NODE_IN:
1026 cap = V4L2_CAP_VIDEO_OUTPUT_MPLANE;
1027 f->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
1028 vdev->ioctl_ops = &imgu_v4l2_ioctl_ops;
1029 break;
1030 case IMGU_NODE_PARAMS:
1031 cap = V4L2_CAP_META_OUTPUT;
1032 f->type = V4L2_BUF_TYPE_META_OUTPUT;
1033 f->fmt.meta.dataformat = V4L2_META_FMT_IPU3_PARAMS;
1034 vdev->ioctl_ops = &imgu_v4l2_meta_ioctl_ops;
1035 imgu_css_meta_fmt_set(&f->fmt.meta);
1036 break;
1037 case IMGU_NODE_STAT_3A:
1038 cap = V4L2_CAP_META_CAPTURE;
1039 f->type = V4L2_BUF_TYPE_META_CAPTURE;
1040 f->fmt.meta.dataformat = V4L2_META_FMT_IPU3_STAT_3A;
1041 vdev->ioctl_ops = &imgu_v4l2_meta_ioctl_ops;
1042 imgu_css_meta_fmt_set(&f->fmt.meta);
1043 break;
1044 default:
1045 cap = V4L2_CAP_VIDEO_CAPTURE_MPLANE;
1046 f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1047 vdev->ioctl_ops = &imgu_v4l2_ioctl_ops;
1048 }
1049
1050 vdev->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_IO_MC | cap;
1051 }
1052
imgu_v4l2_subdev_register(struct imgu_device * imgu,struct imgu_v4l2_subdev * imgu_sd,unsigned int pipe)1053 static int imgu_v4l2_subdev_register(struct imgu_device *imgu,
1054 struct imgu_v4l2_subdev *imgu_sd,
1055 unsigned int pipe)
1056 {
1057 int i, r;
1058 struct v4l2_ctrl_handler *hdl = &imgu_sd->ctrl_handler;
1059 struct imgu_media_pipe *imgu_pipe = &imgu->imgu_pipe[pipe];
1060
1061 /* Initialize subdev media entity */
1062 r = media_entity_pads_init(&imgu_sd->subdev.entity, IMGU_NODE_NUM,
1063 imgu_sd->subdev_pads);
1064 if (r) {
1065 dev_err(&imgu->pci_dev->dev,
1066 "failed initialize subdev media entity (%d)\n", r);
1067 return r;
1068 }
1069 imgu_sd->subdev.entity.ops = &imgu_media_ops;
1070 for (i = 0; i < IMGU_NODE_NUM; i++) {
1071 imgu_sd->subdev_pads[i].flags = imgu_pipe->nodes[i].output ?
1072 MEDIA_PAD_FL_SINK : MEDIA_PAD_FL_SOURCE;
1073 }
1074
1075 /* Initialize subdev */
1076 v4l2_subdev_init(&imgu_sd->subdev, &imgu_subdev_ops);
1077 imgu_sd->subdev.entity.function = MEDIA_ENT_F_PROC_VIDEO_STATISTICS;
1078 imgu_sd->subdev.internal_ops = &imgu_subdev_internal_ops;
1079 imgu_sd->subdev.flags = V4L2_SUBDEV_FL_HAS_DEVNODE |
1080 V4L2_SUBDEV_FL_HAS_EVENTS;
1081 snprintf(imgu_sd->subdev.name, sizeof(imgu_sd->subdev.name),
1082 "%s %u", IMGU_NAME, pipe);
1083 v4l2_set_subdevdata(&imgu_sd->subdev, imgu);
1084 atomic_set(&imgu_sd->running_mode, IPU3_RUNNING_MODE_VIDEO);
1085 v4l2_ctrl_handler_init(hdl, 1);
1086 imgu_sd->subdev.ctrl_handler = hdl;
1087 imgu_sd->ctrl = v4l2_ctrl_new_custom(hdl, &imgu_subdev_ctrl_mode, NULL);
1088 if (hdl->error) {
1089 r = hdl->error;
1090 dev_err(&imgu->pci_dev->dev,
1091 "failed to create subdev v4l2 ctrl with err %d", r);
1092 goto fail_subdev;
1093 }
1094 r = v4l2_device_register_subdev(&imgu->v4l2_dev, &imgu_sd->subdev);
1095 if (r) {
1096 dev_err(&imgu->pci_dev->dev,
1097 "failed initialize subdev (%d)\n", r);
1098 goto fail_subdev;
1099 }
1100
1101 imgu_sd->pipe = pipe;
1102 return 0;
1103
1104 fail_subdev:
1105 v4l2_ctrl_handler_free(imgu_sd->subdev.ctrl_handler);
1106 media_entity_cleanup(&imgu_sd->subdev.entity);
1107
1108 return r;
1109 }
1110
imgu_v4l2_node_setup(struct imgu_device * imgu,unsigned int pipe,int node_num)1111 static int imgu_v4l2_node_setup(struct imgu_device *imgu, unsigned int pipe,
1112 int node_num)
1113 {
1114 int r;
1115 u32 flags;
1116 struct v4l2_mbus_framefmt def_bus_fmt = { 0 };
1117 struct v4l2_pix_format_mplane def_pix_fmt = { 0 };
1118 struct device *dev = &imgu->pci_dev->dev;
1119 struct imgu_media_pipe *imgu_pipe = &imgu->imgu_pipe[pipe];
1120 struct v4l2_subdev *sd = &imgu_pipe->imgu_sd.subdev;
1121 struct imgu_video_device *node = &imgu_pipe->nodes[node_num];
1122 struct video_device *vdev = &node->vdev;
1123 struct vb2_queue *vbq = &node->vbq;
1124
1125 /* Initialize formats to default values */
1126 def_bus_fmt.width = 1920;
1127 def_bus_fmt.height = 1080;
1128 def_bus_fmt.code = MEDIA_BUS_FMT_FIXED;
1129 def_bus_fmt.field = V4L2_FIELD_NONE;
1130 def_bus_fmt.colorspace = V4L2_COLORSPACE_RAW;
1131 def_bus_fmt.ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
1132 def_bus_fmt.quantization = V4L2_QUANTIZATION_DEFAULT;
1133 def_bus_fmt.xfer_func = V4L2_XFER_FUNC_DEFAULT;
1134
1135 def_pix_fmt.width = def_bus_fmt.width;
1136 def_pix_fmt.height = def_bus_fmt.height;
1137 def_pix_fmt.field = def_bus_fmt.field;
1138 def_pix_fmt.num_planes = 1;
1139 def_pix_fmt.plane_fmt[0].bytesperline = def_pix_fmt.width * 2;
1140 def_pix_fmt.plane_fmt[0].sizeimage =
1141 def_pix_fmt.height * def_pix_fmt.plane_fmt[0].bytesperline;
1142 def_pix_fmt.flags = 0;
1143 def_pix_fmt.colorspace = def_bus_fmt.colorspace;
1144 def_pix_fmt.ycbcr_enc = def_bus_fmt.ycbcr_enc;
1145 def_pix_fmt.quantization = def_bus_fmt.quantization;
1146 def_pix_fmt.xfer_func = def_bus_fmt.xfer_func;
1147
1148 /* Initialize miscellaneous variables */
1149 mutex_init(&node->lock);
1150 INIT_LIST_HEAD(&node->buffers);
1151
1152 /* Initialize formats to default values */
1153 node->pad_fmt = def_bus_fmt;
1154 node->id = node_num;
1155 node->pipe = pipe;
1156 imgu_node_to_v4l2(node_num, vdev, &node->vdev_fmt);
1157 if (node->vdev_fmt.type ==
1158 V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE ||
1159 node->vdev_fmt.type ==
1160 V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
1161 def_pix_fmt.pixelformat = node->output ?
1162 V4L2_PIX_FMT_IPU3_SGRBG10 :
1163 V4L2_PIX_FMT_NV12;
1164 node->vdev_fmt.fmt.pix_mp = def_pix_fmt;
1165 }
1166
1167 /* Initialize media entities */
1168 r = media_entity_pads_init(&vdev->entity, 1, &node->vdev_pad);
1169 if (r) {
1170 dev_err(dev, "failed initialize media entity (%d)\n", r);
1171 mutex_destroy(&node->lock);
1172 return r;
1173 }
1174 node->vdev_pad.flags = node->output ?
1175 MEDIA_PAD_FL_SOURCE : MEDIA_PAD_FL_SINK;
1176 vdev->entity.ops = NULL;
1177
1178 /* Initialize vbq */
1179 vbq->type = node->vdev_fmt.type;
1180 vbq->io_modes = VB2_USERPTR | VB2_MMAP | VB2_DMABUF;
1181 vbq->ops = &imgu_vb2_ops;
1182 vbq->mem_ops = &vb2_dma_sg_memops;
1183 if (imgu->buf_struct_size <= 0)
1184 imgu->buf_struct_size =
1185 sizeof(struct imgu_vb2_buffer);
1186 vbq->buf_struct_size = imgu->buf_struct_size;
1187 vbq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1188 /* can streamon w/o buffers */
1189 vbq->min_buffers_needed = 0;
1190 vbq->drv_priv = imgu;
1191 vbq->lock = &node->lock;
1192 r = vb2_queue_init(vbq);
1193 if (r) {
1194 dev_err(dev, "failed to initialize video queue (%d)", r);
1195 media_entity_cleanup(&vdev->entity);
1196 return r;
1197 }
1198
1199 /* Initialize vdev */
1200 snprintf(vdev->name, sizeof(vdev->name), "%s %u %s",
1201 IMGU_NAME, pipe, node->name);
1202 vdev->release = video_device_release_empty;
1203 vdev->fops = &imgu_v4l2_fops;
1204 vdev->lock = &node->lock;
1205 vdev->v4l2_dev = &imgu->v4l2_dev;
1206 vdev->queue = &node->vbq;
1207 vdev->vfl_dir = node->output ? VFL_DIR_TX : VFL_DIR_RX;
1208 video_set_drvdata(vdev, imgu);
1209 r = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
1210 if (r) {
1211 dev_err(dev, "failed to register video device (%d)", r);
1212 media_entity_cleanup(&vdev->entity);
1213 return r;
1214 }
1215
1216 /* Create link between video node and the subdev pad */
1217 flags = 0;
1218 if (node->enabled)
1219 flags |= MEDIA_LNK_FL_ENABLED;
1220 if (node->output) {
1221 r = media_create_pad_link(&vdev->entity, 0, &sd->entity,
1222 node_num, flags);
1223 } else {
1224 if (node->id == IMGU_NODE_OUT) {
1225 flags |= MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE;
1226 node->enabled = true;
1227 }
1228
1229 r = media_create_pad_link(&sd->entity, node_num, &vdev->entity,
1230 0, flags);
1231 }
1232 if (r) {
1233 dev_err(dev, "failed to create pad link (%d)", r);
1234 video_unregister_device(vdev);
1235 return r;
1236 }
1237
1238 return 0;
1239 }
1240
imgu_v4l2_nodes_cleanup_pipe(struct imgu_device * imgu,unsigned int pipe,int node)1241 static void imgu_v4l2_nodes_cleanup_pipe(struct imgu_device *imgu,
1242 unsigned int pipe, int node)
1243 {
1244 int i;
1245 struct imgu_media_pipe *imgu_pipe = &imgu->imgu_pipe[pipe];
1246
1247 for (i = 0; i < node; i++) {
1248 video_unregister_device(&imgu_pipe->nodes[i].vdev);
1249 media_entity_cleanup(&imgu_pipe->nodes[i].vdev.entity);
1250 mutex_destroy(&imgu_pipe->nodes[i].lock);
1251 }
1252 }
1253
imgu_v4l2_nodes_setup_pipe(struct imgu_device * imgu,int pipe)1254 static int imgu_v4l2_nodes_setup_pipe(struct imgu_device *imgu, int pipe)
1255 {
1256 int i;
1257
1258 for (i = 0; i < IMGU_NODE_NUM; i++) {
1259 int r = imgu_v4l2_node_setup(imgu, pipe, i);
1260
1261 if (r) {
1262 imgu_v4l2_nodes_cleanup_pipe(imgu, pipe, i);
1263 return r;
1264 }
1265 }
1266 return 0;
1267 }
1268
imgu_v4l2_subdev_cleanup(struct imgu_device * imgu,unsigned int i)1269 static void imgu_v4l2_subdev_cleanup(struct imgu_device *imgu, unsigned int i)
1270 {
1271 struct imgu_media_pipe *imgu_pipe = &imgu->imgu_pipe[i];
1272
1273 v4l2_device_unregister_subdev(&imgu_pipe->imgu_sd.subdev);
1274 v4l2_ctrl_handler_free(imgu_pipe->imgu_sd.subdev.ctrl_handler);
1275 media_entity_cleanup(&imgu_pipe->imgu_sd.subdev.entity);
1276 }
1277
imgu_v4l2_cleanup_pipes(struct imgu_device * imgu,unsigned int pipe)1278 static void imgu_v4l2_cleanup_pipes(struct imgu_device *imgu, unsigned int pipe)
1279 {
1280 int i;
1281
1282 for (i = 0; i < pipe; i++) {
1283 imgu_v4l2_nodes_cleanup_pipe(imgu, i, IMGU_NODE_NUM);
1284 imgu_v4l2_subdev_cleanup(imgu, i);
1285 }
1286 }
1287
imgu_v4l2_register_pipes(struct imgu_device * imgu)1288 static int imgu_v4l2_register_pipes(struct imgu_device *imgu)
1289 {
1290 struct imgu_media_pipe *imgu_pipe;
1291 int i, r;
1292
1293 for (i = 0; i < IMGU_MAX_PIPE_NUM; i++) {
1294 imgu_pipe = &imgu->imgu_pipe[i];
1295 r = imgu_v4l2_subdev_register(imgu, &imgu_pipe->imgu_sd, i);
1296 if (r) {
1297 dev_err(&imgu->pci_dev->dev,
1298 "failed to register subdev%u ret (%d)\n", i, r);
1299 goto pipes_cleanup;
1300 }
1301 r = imgu_v4l2_nodes_setup_pipe(imgu, i);
1302 if (r) {
1303 imgu_v4l2_subdev_cleanup(imgu, i);
1304 goto pipes_cleanup;
1305 }
1306 }
1307
1308 return 0;
1309
1310 pipes_cleanup:
1311 imgu_v4l2_cleanup_pipes(imgu, i);
1312 return r;
1313 }
1314
imgu_v4l2_register(struct imgu_device * imgu)1315 int imgu_v4l2_register(struct imgu_device *imgu)
1316 {
1317 int r;
1318
1319 /* Initialize miscellaneous variables */
1320 imgu->streaming = false;
1321
1322 /* Set up media device */
1323 media_device_pci_init(&imgu->media_dev, imgu->pci_dev, IMGU_NAME);
1324
1325 /* Set up v4l2 device */
1326 imgu->v4l2_dev.mdev = &imgu->media_dev;
1327 imgu->v4l2_dev.ctrl_handler = NULL;
1328 r = v4l2_device_register(&imgu->pci_dev->dev, &imgu->v4l2_dev);
1329 if (r) {
1330 dev_err(&imgu->pci_dev->dev,
1331 "failed to register V4L2 device (%d)\n", r);
1332 goto fail_v4l2_dev;
1333 }
1334
1335 r = imgu_v4l2_register_pipes(imgu);
1336 if (r) {
1337 dev_err(&imgu->pci_dev->dev,
1338 "failed to register pipes (%d)\n", r);
1339 goto fail_v4l2_pipes;
1340 }
1341
1342 r = v4l2_device_register_subdev_nodes(&imgu->v4l2_dev);
1343 if (r) {
1344 dev_err(&imgu->pci_dev->dev,
1345 "failed to register subdevs (%d)\n", r);
1346 goto fail_subdevs;
1347 }
1348
1349 r = media_device_register(&imgu->media_dev);
1350 if (r) {
1351 dev_err(&imgu->pci_dev->dev,
1352 "failed to register media device (%d)\n", r);
1353 goto fail_subdevs;
1354 }
1355
1356 return 0;
1357
1358 fail_subdevs:
1359 imgu_v4l2_cleanup_pipes(imgu, IMGU_MAX_PIPE_NUM);
1360 fail_v4l2_pipes:
1361 v4l2_device_unregister(&imgu->v4l2_dev);
1362 fail_v4l2_dev:
1363 media_device_cleanup(&imgu->media_dev);
1364
1365 return r;
1366 }
1367
imgu_v4l2_unregister(struct imgu_device * imgu)1368 int imgu_v4l2_unregister(struct imgu_device *imgu)
1369 {
1370 media_device_unregister(&imgu->media_dev);
1371 imgu_v4l2_cleanup_pipes(imgu, IMGU_MAX_PIPE_NUM);
1372 v4l2_device_unregister(&imgu->v4l2_dev);
1373 media_device_cleanup(&imgu->media_dev);
1374
1375 return 0;
1376 }
1377
imgu_v4l2_buffer_done(struct vb2_buffer * vb,enum vb2_buffer_state state)1378 void imgu_v4l2_buffer_done(struct vb2_buffer *vb,
1379 enum vb2_buffer_state state)
1380 {
1381 struct imgu_vb2_buffer *b =
1382 container_of(vb, struct imgu_vb2_buffer, vbb.vb2_buf);
1383
1384 list_del(&b->list);
1385 vb2_buffer_done(&b->vbb.vb2_buf, state);
1386 }
1387
