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Merge tag 'v3.7' into v4l_for_linus
[deliverable/linux.git] / drivers / media / platform / s5p-fimc / fimc-capture.c
1 /*
2 * Samsung S5P/EXYNOS4 SoC series camera interface (camera capture) driver
3 *
4 * Copyright (C) 2010 - 2012 Samsung Electronics Co., Ltd.
5 * Sylwester Nawrocki <s.nawrocki@samsung.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11
12 #include <linux/module.h>
13 #include <linux/kernel.h>
14 #include <linux/types.h>
15 #include <linux/errno.h>
16 #include <linux/bug.h>
17 #include <linux/interrupt.h>
18 #include <linux/device.h>
19 #include <linux/pm_runtime.h>
20 #include <linux/list.h>
21 #include <linux/slab.h>
22
23 #include <linux/videodev2.h>
24 #include <media/v4l2-device.h>
25 #include <media/v4l2-ioctl.h>
26 #include <media/v4l2-mem2mem.h>
27 #include <media/videobuf2-core.h>
28 #include <media/videobuf2-dma-contig.h>
29
30 #include "fimc-mdevice.h"
31 #include "fimc-core.h"
32 #include "fimc-reg.h"
33
34 static int fimc_capture_hw_init(struct fimc_dev *fimc)
35 {
36 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
37 struct fimc_pipeline *p = &fimc->pipeline;
38 struct fimc_sensor_info *sensor;
39 unsigned long flags;
40 int ret = 0;
41
42 if (p->subdevs[IDX_SENSOR] == NULL || ctx == NULL)
43 return -ENXIO;
44 if (ctx->s_frame.fmt == NULL)
45 return -EINVAL;
46
47 sensor = v4l2_get_subdev_hostdata(p->subdevs[IDX_SENSOR]);
48
49 spin_lock_irqsave(&fimc->slock, flags);
50 fimc_prepare_dma_offset(ctx, &ctx->d_frame);
51 fimc_set_yuv_order(ctx);
52
53 fimc_hw_set_camera_polarity(fimc, &sensor->pdata);
54 fimc_hw_set_camera_type(fimc, &sensor->pdata);
55 fimc_hw_set_camera_source(fimc, &sensor->pdata);
56 fimc_hw_set_camera_offset(fimc, &ctx->s_frame);
57
58 ret = fimc_set_scaler_info(ctx);
59 if (!ret) {
60 fimc_hw_set_input_path(ctx);
61 fimc_hw_set_prescaler(ctx);
62 fimc_hw_set_mainscaler(ctx);
63 fimc_hw_set_target_format(ctx);
64 fimc_hw_set_rotation(ctx);
65 fimc_hw_set_effect(ctx);
66 fimc_hw_set_output_path(ctx);
67 fimc_hw_set_out_dma(ctx);
68 if (fimc->variant->has_alpha)
69 fimc_hw_set_rgb_alpha(ctx);
70 clear_bit(ST_CAPT_APPLY_CFG, &fimc->state);
71 }
72 spin_unlock_irqrestore(&fimc->slock, flags);
73 return ret;
74 }
75
76 /*
77 * Reinitialize the driver so it is ready to start the streaming again.
78 * Set fimc->state to indicate stream off and the hardware shut down state.
79 * If not suspending (@suspend is false), return any buffers to videobuf2.
80 * Otherwise put any owned buffers onto the pending buffers queue, so they
81 * can be re-spun when the device is being resumed. Also perform FIMC
82 * software reset and disable streaming on the whole pipeline if required.
83 */
84 static int fimc_capture_state_cleanup(struct fimc_dev *fimc, bool suspend)
85 {
86 struct fimc_vid_cap *cap = &fimc->vid_cap;
87 struct fimc_vid_buffer *buf;
88 unsigned long flags;
89 bool streaming;
90
91 spin_lock_irqsave(&fimc->slock, flags);
92 streaming = fimc->state & (1 << ST_CAPT_ISP_STREAM);
93
94 fimc->state &= ~(1 << ST_CAPT_RUN | 1 << ST_CAPT_SHUT |
95 1 << ST_CAPT_STREAM | 1 << ST_CAPT_ISP_STREAM);
96 if (suspend)
97 fimc->state |= (1 << ST_CAPT_SUSPENDED);
98 else
99 fimc->state &= ~(1 << ST_CAPT_PEND | 1 << ST_CAPT_SUSPENDED);
100
101 /* Release unused buffers */
102 while (!suspend && !list_empty(&cap->pending_buf_q)) {
103 buf = fimc_pending_queue_pop(cap);
104 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
105 }
106 /* If suspending put unused buffers onto pending queue */
107 while (!list_empty(&cap->active_buf_q)) {
108 buf = fimc_active_queue_pop(cap);
109 if (suspend)
110 fimc_pending_queue_add(cap, buf);
111 else
112 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
113 }
114
115 fimc_hw_reset(fimc);
116 cap->buf_index = 0;
117
118 spin_unlock_irqrestore(&fimc->slock, flags);
119
120 if (streaming)
121 return fimc_pipeline_call(fimc, set_stream,
122 &fimc->pipeline, 0);
123 else
124 return 0;
125 }
126
127 static int fimc_stop_capture(struct fimc_dev *fimc, bool suspend)
128 {
129 unsigned long flags;
130
131 if (!fimc_capture_active(fimc))
132 return 0;
133
134 spin_lock_irqsave(&fimc->slock, flags);
135 set_bit(ST_CAPT_SHUT, &fimc->state);
136 fimc_deactivate_capture(fimc);
137 spin_unlock_irqrestore(&fimc->slock, flags);
138
139 wait_event_timeout(fimc->irq_queue,
140 !test_bit(ST_CAPT_SHUT, &fimc->state),
141 (2*HZ/10)); /* 200 ms */
142
143 return fimc_capture_state_cleanup(fimc, suspend);
144 }
145
146 /**
147 * fimc_capture_config_update - apply the camera interface configuration
148 *
149 * To be called from within the interrupt handler with fimc.slock
150 * spinlock held. It updates the camera pixel crop, rotation and
151 * image flip in H/W.
152 */
153 static int fimc_capture_config_update(struct fimc_ctx *ctx)
154 {
155 struct fimc_dev *fimc = ctx->fimc_dev;
156 int ret;
157
158 fimc_hw_set_camera_offset(fimc, &ctx->s_frame);
159
160 ret = fimc_set_scaler_info(ctx);
161 if (ret)
162 return ret;
163
164 fimc_hw_set_prescaler(ctx);
165 fimc_hw_set_mainscaler(ctx);
166 fimc_hw_set_target_format(ctx);
167 fimc_hw_set_rotation(ctx);
168 fimc_hw_set_effect(ctx);
169 fimc_prepare_dma_offset(ctx, &ctx->d_frame);
170 fimc_hw_set_out_dma(ctx);
171 if (fimc->variant->has_alpha)
172 fimc_hw_set_rgb_alpha(ctx);
173
174 clear_bit(ST_CAPT_APPLY_CFG, &fimc->state);
175 return ret;
176 }
177
178 void fimc_capture_irq_handler(struct fimc_dev *fimc, int deq_buf)
179 {
180 struct v4l2_subdev *csis = fimc->pipeline.subdevs[IDX_CSIS];
181 struct fimc_vid_cap *cap = &fimc->vid_cap;
182 struct fimc_frame *f = &cap->ctx->d_frame;
183 struct fimc_vid_buffer *v_buf;
184 struct timeval *tv;
185 struct timespec ts;
186
187 if (test_and_clear_bit(ST_CAPT_SHUT, &fimc->state)) {
188 wake_up(&fimc->irq_queue);
189 goto done;
190 }
191
192 if (!list_empty(&cap->active_buf_q) &&
193 test_bit(ST_CAPT_RUN, &fimc->state) && deq_buf) {
194 ktime_get_real_ts(&ts);
195
196 v_buf = fimc_active_queue_pop(cap);
197
198 tv = &v_buf->vb.v4l2_buf.timestamp;
199 tv->tv_sec = ts.tv_sec;
200 tv->tv_usec = ts.tv_nsec / NSEC_PER_USEC;
201 v_buf->vb.v4l2_buf.sequence = cap->frame_count++;
202
203 vb2_buffer_done(&v_buf->vb, VB2_BUF_STATE_DONE);
204 }
205
206 if (!list_empty(&cap->pending_buf_q)) {
207
208 v_buf = fimc_pending_queue_pop(cap);
209 fimc_hw_set_output_addr(fimc, &v_buf->paddr, cap->buf_index);
210 v_buf->index = cap->buf_index;
211
212 /* Move the buffer to the capture active queue */
213 fimc_active_queue_add(cap, v_buf);
214
215 dbg("next frame: %d, done frame: %d",
216 fimc_hw_get_frame_index(fimc), v_buf->index);
217
218 if (++cap->buf_index >= FIMC_MAX_OUT_BUFS)
219 cap->buf_index = 0;
220 }
221 /*
222 * Set up a buffer at MIPI-CSIS if current image format
223 * requires the frame embedded data capture.
224 */
225 if (f->fmt->mdataplanes && !list_empty(&cap->active_buf_q)) {
226 unsigned int plane = ffs(f->fmt->mdataplanes) - 1;
227 unsigned int size = f->payload[plane];
228 s32 index = fimc_hw_get_frame_index(fimc);
229 void *vaddr;
230
231 list_for_each_entry(v_buf, &cap->active_buf_q, list) {
232 if (v_buf->index != index)
233 continue;
234 vaddr = vb2_plane_vaddr(&v_buf->vb, plane);
235 v4l2_subdev_call(csis, video, s_rx_buffer,
236 vaddr, &size);
237 break;
238 }
239 }
240
241 if (cap->active_buf_cnt == 0) {
242 if (deq_buf)
243 clear_bit(ST_CAPT_RUN, &fimc->state);
244
245 if (++cap->buf_index >= FIMC_MAX_OUT_BUFS)
246 cap->buf_index = 0;
247 } else {
248 set_bit(ST_CAPT_RUN, &fimc->state);
249 }
250
251 if (test_bit(ST_CAPT_APPLY_CFG, &fimc->state))
252 fimc_capture_config_update(cap->ctx);
253 done:
254 if (cap->active_buf_cnt == 1) {
255 fimc_deactivate_capture(fimc);
256 clear_bit(ST_CAPT_STREAM, &fimc->state);
257 }
258
259 dbg("frame: %d, active_buf_cnt: %d",
260 fimc_hw_get_frame_index(fimc), cap->active_buf_cnt);
261 }
262
263
264 static int start_streaming(struct vb2_queue *q, unsigned int count)
265 {
266 struct fimc_ctx *ctx = q->drv_priv;
267 struct fimc_dev *fimc = ctx->fimc_dev;
268 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
269 int min_bufs;
270 int ret;
271
272 vid_cap->frame_count = 0;
273
274 ret = fimc_capture_hw_init(fimc);
275 if (ret) {
276 fimc_capture_state_cleanup(fimc, false);
277 return ret;
278 }
279
280 set_bit(ST_CAPT_PEND, &fimc->state);
281
282 min_bufs = fimc->vid_cap.reqbufs_count > 1 ? 2 : 1;
283
284 if (vid_cap->active_buf_cnt >= min_bufs &&
285 !test_and_set_bit(ST_CAPT_STREAM, &fimc->state)) {
286 fimc_activate_capture(ctx);
287
288 if (!test_and_set_bit(ST_CAPT_ISP_STREAM, &fimc->state))
289 fimc_pipeline_call(fimc, set_stream,
290 &fimc->pipeline, 1);
291 }
292
293 return 0;
294 }
295
296 static int stop_streaming(struct vb2_queue *q)
297 {
298 struct fimc_ctx *ctx = q->drv_priv;
299 struct fimc_dev *fimc = ctx->fimc_dev;
300
301 if (!fimc_capture_active(fimc))
302 return -EINVAL;
303
304 return fimc_stop_capture(fimc, false);
305 }
306
307 int fimc_capture_suspend(struct fimc_dev *fimc)
308 {
309 bool suspend = fimc_capture_busy(fimc);
310
311 int ret = fimc_stop_capture(fimc, suspend);
312 if (ret)
313 return ret;
314 return fimc_pipeline_call(fimc, close, &fimc->pipeline);
315 }
316
317 static void buffer_queue(struct vb2_buffer *vb);
318
319 int fimc_capture_resume(struct fimc_dev *fimc)
320 {
321 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
322 struct fimc_vid_buffer *buf;
323 int i;
324
325 if (!test_and_clear_bit(ST_CAPT_SUSPENDED, &fimc->state))
326 return 0;
327
328 INIT_LIST_HEAD(&fimc->vid_cap.active_buf_q);
329 vid_cap->buf_index = 0;
330 fimc_pipeline_call(fimc, open, &fimc->pipeline,
331 &vid_cap->vfd.entity, false);
332 fimc_capture_hw_init(fimc);
333
334 clear_bit(ST_CAPT_SUSPENDED, &fimc->state);
335
336 for (i = 0; i < vid_cap->reqbufs_count; i++) {
337 if (list_empty(&vid_cap->pending_buf_q))
338 break;
339 buf = fimc_pending_queue_pop(vid_cap);
340 buffer_queue(&buf->vb);
341 }
342 return 0;
343
344 }
345
346 static int queue_setup(struct vb2_queue *vq, const struct v4l2_format *pfmt,
347 unsigned int *num_buffers, unsigned int *num_planes,
348 unsigned int sizes[], void *allocators[])
349 {
350 const struct v4l2_pix_format_mplane *pixm = NULL;
351 struct fimc_ctx *ctx = vq->drv_priv;
352 struct fimc_frame *frame = &ctx->d_frame;
353 struct fimc_fmt *fmt = frame->fmt;
354 unsigned long wh;
355 int i;
356
357 if (pfmt) {
358 pixm = &pfmt->fmt.pix_mp;
359 fmt = fimc_find_format(&pixm->pixelformat, NULL,
360 FMT_FLAGS_CAM | FMT_FLAGS_M2M, -1);
361 wh = pixm->width * pixm->height;
362 } else {
363 wh = frame->f_width * frame->f_height;
364 }
365
366 if (fmt == NULL)
367 return -EINVAL;
368
369 *num_planes = fmt->memplanes;
370
371 for (i = 0; i < fmt->memplanes; i++) {
372 unsigned int size = (wh * fmt->depth[i]) / 8;
373 if (pixm)
374 sizes[i] = max(size, pixm->plane_fmt[i].sizeimage);
375 else if (fimc_fmt_is_user_defined(fmt->color))
376 sizes[i] = frame->payload[i];
377 else
378 sizes[i] = max_t(u32, size, frame->payload[i]);
379
380 allocators[i] = ctx->fimc_dev->alloc_ctx;
381 }
382
383 return 0;
384 }
385
386 static int buffer_prepare(struct vb2_buffer *vb)
387 {
388 struct vb2_queue *vq = vb->vb2_queue;
389 struct fimc_ctx *ctx = vq->drv_priv;
390 int i;
391
392 if (ctx->d_frame.fmt == NULL)
393 return -EINVAL;
394
395 for (i = 0; i < ctx->d_frame.fmt->memplanes; i++) {
396 unsigned long size = ctx->d_frame.payload[i];
397
398 if (vb2_plane_size(vb, i) < size) {
399 v4l2_err(&ctx->fimc_dev->vid_cap.vfd,
400 "User buffer too small (%ld < %ld)\n",
401 vb2_plane_size(vb, i), size);
402 return -EINVAL;
403 }
404 vb2_set_plane_payload(vb, i, size);
405 }
406
407 return 0;
408 }
409
410 static void buffer_queue(struct vb2_buffer *vb)
411 {
412 struct fimc_vid_buffer *buf
413 = container_of(vb, struct fimc_vid_buffer, vb);
414 struct fimc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
415 struct fimc_dev *fimc = ctx->fimc_dev;
416 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
417 unsigned long flags;
418 int min_bufs;
419
420 spin_lock_irqsave(&fimc->slock, flags);
421 fimc_prepare_addr(ctx, &buf->vb, &ctx->d_frame, &buf->paddr);
422
423 if (!test_bit(ST_CAPT_SUSPENDED, &fimc->state) &&
424 !test_bit(ST_CAPT_STREAM, &fimc->state) &&
425 vid_cap->active_buf_cnt < FIMC_MAX_OUT_BUFS) {
426 /* Setup the buffer directly for processing. */
427 int buf_id = (vid_cap->reqbufs_count == 1) ? -1 :
428 vid_cap->buf_index;
429
430 fimc_hw_set_output_addr(fimc, &buf->paddr, buf_id);
431 buf->index = vid_cap->buf_index;
432 fimc_active_queue_add(vid_cap, buf);
433
434 if (++vid_cap->buf_index >= FIMC_MAX_OUT_BUFS)
435 vid_cap->buf_index = 0;
436 } else {
437 fimc_pending_queue_add(vid_cap, buf);
438 }
439
440 min_bufs = vid_cap->reqbufs_count > 1 ? 2 : 1;
441
442
443 if (vb2_is_streaming(&vid_cap->vbq) &&
444 vid_cap->active_buf_cnt >= min_bufs &&
445 !test_and_set_bit(ST_CAPT_STREAM, &fimc->state)) {
446 fimc_activate_capture(ctx);
447 spin_unlock_irqrestore(&fimc->slock, flags);
448
449 if (!test_and_set_bit(ST_CAPT_ISP_STREAM, &fimc->state))
450 fimc_pipeline_call(fimc, set_stream,
451 &fimc->pipeline, 1);
452 return;
453 }
454 spin_unlock_irqrestore(&fimc->slock, flags);
455 }
456
457 static void fimc_lock(struct vb2_queue *vq)
458 {
459 struct fimc_ctx *ctx = vb2_get_drv_priv(vq);
460 mutex_lock(&ctx->fimc_dev->lock);
461 }
462
463 static void fimc_unlock(struct vb2_queue *vq)
464 {
465 struct fimc_ctx *ctx = vb2_get_drv_priv(vq);
466 mutex_unlock(&ctx->fimc_dev->lock);
467 }
468
469 static struct vb2_ops fimc_capture_qops = {
470 .queue_setup = queue_setup,
471 .buf_prepare = buffer_prepare,
472 .buf_queue = buffer_queue,
473 .wait_prepare = fimc_unlock,
474 .wait_finish = fimc_lock,
475 .start_streaming = start_streaming,
476 .stop_streaming = stop_streaming,
477 };
478
479 /**
480 * fimc_capture_ctrls_create - initialize the control handler
481 * Initialize the capture video node control handler and fill it
482 * with the FIMC controls. Inherit any sensor's controls if the
483 * 'user_subdev_api' flag is false (default behaviour).
484 * This function need to be called with the graph mutex held.
485 */
486 int fimc_capture_ctrls_create(struct fimc_dev *fimc)
487 {
488 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
489 int ret;
490
491 if (WARN_ON(vid_cap->ctx == NULL))
492 return -ENXIO;
493 if (vid_cap->ctx->ctrls.ready)
494 return 0;
495
496 ret = fimc_ctrls_create(vid_cap->ctx);
497 if (ret || vid_cap->user_subdev_api || !vid_cap->ctx->ctrls.ready)
498 return ret;
499
500 return v4l2_ctrl_add_handler(&vid_cap->ctx->ctrls.handler,
501 fimc->pipeline.subdevs[IDX_SENSOR]->ctrl_handler, NULL);
502 }
503
504 static int fimc_capture_set_default_format(struct fimc_dev *fimc);
505
506 static int fimc_capture_open(struct file *file)
507 {
508 struct fimc_dev *fimc = video_drvdata(file);
509 int ret = -EBUSY;
510
511 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
512
513 if (mutex_lock_interruptible(&fimc->lock))
514 return -ERESTARTSYS;
515
516 if (fimc_m2m_active(fimc))
517 goto unlock;
518
519 set_bit(ST_CAPT_BUSY, &fimc->state);
520 ret = pm_runtime_get_sync(&fimc->pdev->dev);
521 if (ret < 0)
522 goto unlock;
523
524 ret = v4l2_fh_open(file);
525 if (ret) {
526 pm_runtime_put(&fimc->pdev->dev);
527 goto unlock;
528 }
529
530 if (++fimc->vid_cap.refcnt == 1) {
531 ret = fimc_pipeline_call(fimc, open, &fimc->pipeline,
532 &fimc->vid_cap.vfd.entity, true);
533
534 if (!ret && !fimc->vid_cap.user_subdev_api)
535 ret = fimc_capture_set_default_format(fimc);
536
537 if (!ret)
538 ret = fimc_capture_ctrls_create(fimc);
539
540 if (ret < 0) {
541 clear_bit(ST_CAPT_BUSY, &fimc->state);
542 pm_runtime_put_sync(&fimc->pdev->dev);
543 fimc->vid_cap.refcnt--;
544 v4l2_fh_release(file);
545 }
546 }
547 unlock:
548 mutex_unlock(&fimc->lock);
549 return ret;
550 }
551
552 static int fimc_capture_close(struct file *file)
553 {
554 struct fimc_dev *fimc = video_drvdata(file);
555 int ret;
556
557 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
558
559 mutex_lock(&fimc->lock);
560
561 if (--fimc->vid_cap.refcnt == 0) {
562 clear_bit(ST_CAPT_BUSY, &fimc->state);
563 fimc_stop_capture(fimc, false);
564 fimc_pipeline_call(fimc, close, &fimc->pipeline);
565 clear_bit(ST_CAPT_SUSPENDED, &fimc->state);
566 }
567
568 pm_runtime_put(&fimc->pdev->dev);
569
570 if (fimc->vid_cap.refcnt == 0) {
571 vb2_queue_release(&fimc->vid_cap.vbq);
572 fimc_ctrls_delete(fimc->vid_cap.ctx);
573 }
574
575 ret = v4l2_fh_release(file);
576
577 mutex_unlock(&fimc->lock);
578 return ret;
579 }
580
581 static unsigned int fimc_capture_poll(struct file *file,
582 struct poll_table_struct *wait)
583 {
584 struct fimc_dev *fimc = video_drvdata(file);
585 int ret;
586
587 if (mutex_lock_interruptible(&fimc->lock))
588 return POLL_ERR;
589
590 ret = vb2_poll(&fimc->vid_cap.vbq, file, wait);
591 mutex_unlock(&fimc->lock);
592
593 return ret;
594 }
595
596 static int fimc_capture_mmap(struct file *file, struct vm_area_struct *vma)
597 {
598 struct fimc_dev *fimc = video_drvdata(file);
599 int ret;
600
601 if (mutex_lock_interruptible(&fimc->lock))
602 return -ERESTARTSYS;
603
604 ret = vb2_mmap(&fimc->vid_cap.vbq, vma);
605 mutex_unlock(&fimc->lock);
606
607 return ret;
608 }
609
610 static const struct v4l2_file_operations fimc_capture_fops = {
611 .owner = THIS_MODULE,
612 .open = fimc_capture_open,
613 .release = fimc_capture_close,
614 .poll = fimc_capture_poll,
615 .unlocked_ioctl = video_ioctl2,
616 .mmap = fimc_capture_mmap,
617 };
618
619 /*
620 * Format and crop negotiation helpers
621 */
622
623 static struct fimc_fmt *fimc_capture_try_format(struct fimc_ctx *ctx,
624 u32 *width, u32 *height,
625 u32 *code, u32 *fourcc, int pad)
626 {
627 bool rotation = ctx->rotation == 90 || ctx->rotation == 270;
628 struct fimc_dev *fimc = ctx->fimc_dev;
629 struct fimc_variant *var = fimc->variant;
630 struct fimc_pix_limit *pl = var->pix_limit;
631 struct fimc_frame *dst = &ctx->d_frame;
632 u32 depth, min_w, max_w, min_h, align_h = 3;
633 u32 mask = FMT_FLAGS_CAM;
634 struct fimc_fmt *ffmt;
635
636 /* Conversion from/to JPEG or User Defined format is not supported */
637 if (code && ctx->s_frame.fmt && pad == FIMC_SD_PAD_SOURCE &&
638 fimc_fmt_is_user_defined(ctx->s_frame.fmt->color))
639 *code = ctx->s_frame.fmt->mbus_code;
640
641 if (fourcc && *fourcc != V4L2_PIX_FMT_JPEG && pad != FIMC_SD_PAD_SINK)
642 mask |= FMT_FLAGS_M2M;
643
644 ffmt = fimc_find_format(fourcc, code, mask, 0);
645 if (WARN_ON(!ffmt))
646 return NULL;
647 if (code)
648 *code = ffmt->mbus_code;
649 if (fourcc)
650 *fourcc = ffmt->fourcc;
651
652 if (pad == FIMC_SD_PAD_SINK) {
653 max_w = fimc_fmt_is_user_defined(ffmt->color) ?
654 pl->scaler_dis_w : pl->scaler_en_w;
655 /* Apply the camera input interface pixel constraints */
656 v4l_bound_align_image(width, max_t(u32, *width, 32), max_w, 4,
657 height, max_t(u32, *height, 32),
658 FIMC_CAMIF_MAX_HEIGHT,
659 fimc_fmt_is_user_defined(ffmt->color) ?
660 3 : 1,
661 0);
662 return ffmt;
663 }
664 /* Can't scale or crop in transparent (JPEG) transfer mode */
665 if (fimc_fmt_is_user_defined(ffmt->color)) {
666 *width = ctx->s_frame.f_width;
667 *height = ctx->s_frame.f_height;
668 return ffmt;
669 }
670 /* Apply the scaler and the output DMA constraints */
671 max_w = rotation ? pl->out_rot_en_w : pl->out_rot_dis_w;
672 if (ctx->state & FIMC_COMPOSE) {
673 min_w = dst->offs_h + dst->width;
674 min_h = dst->offs_v + dst->height;
675 } else {
676 min_w = var->min_out_pixsize;
677 min_h = var->min_out_pixsize;
678 }
679 if (var->min_vsize_align == 1 && !rotation)
680 align_h = fimc_fmt_is_rgb(ffmt->color) ? 0 : 1;
681
682 depth = fimc_get_format_depth(ffmt);
683 v4l_bound_align_image(width, min_w, max_w,
684 ffs(var->min_out_pixsize) - 1,
685 height, min_h, FIMC_CAMIF_MAX_HEIGHT,
686 align_h,
687 64/(ALIGN(depth, 8)));
688
689 dbg("pad%d: code: 0x%x, %dx%d. dst fmt: %dx%d",
690 pad, code ? *code : 0, *width, *height,
691 dst->f_width, dst->f_height);
692
693 return ffmt;
694 }
695
696 static void fimc_capture_try_selection(struct fimc_ctx *ctx,
697 struct v4l2_rect *r,
698 int target)
699 {
700 bool rotate = ctx->rotation == 90 || ctx->rotation == 270;
701 struct fimc_dev *fimc = ctx->fimc_dev;
702 struct fimc_variant *var = fimc->variant;
703 struct fimc_pix_limit *pl = var->pix_limit;
704 struct fimc_frame *sink = &ctx->s_frame;
705 u32 max_w, max_h, min_w = 0, min_h = 0, min_sz;
706 u32 align_sz = 0, align_h = 4;
707 u32 max_sc_h, max_sc_v;
708
709 /* In JPEG transparent transfer mode cropping is not supported */
710 if (fimc_fmt_is_user_defined(ctx->d_frame.fmt->color)) {
711 r->width = sink->f_width;
712 r->height = sink->f_height;
713 r->left = r->top = 0;
714 return;
715 }
716 if (target == V4L2_SEL_TGT_COMPOSE) {
717 if (ctx->rotation != 90 && ctx->rotation != 270)
718 align_h = 1;
719 max_sc_h = min(SCALER_MAX_HRATIO, 1 << (ffs(sink->width) - 3));
720 max_sc_v = min(SCALER_MAX_VRATIO, 1 << (ffs(sink->height) - 1));
721 min_sz = var->min_out_pixsize;
722 } else {
723 u32 depth = fimc_get_format_depth(sink->fmt);
724 align_sz = 64/ALIGN(depth, 8);
725 min_sz = var->min_inp_pixsize;
726 min_w = min_h = min_sz;
727 max_sc_h = max_sc_v = 1;
728 }
729 /*
730 * For the compose rectangle the following constraints must be met:
731 * - it must fit in the sink pad format rectangle (f_width/f_height);
732 * - maximum downscaling ratio is 64;
733 * - maximum crop size depends if the rotator is used or not;
734 * - the sink pad format width/height must be 4 multiple of the
735 * prescaler ratios determined by sink pad size and source pad crop,
736 * the prescaler ratio is returned by fimc_get_scaler_factor().
737 */
738 max_w = min_t(u32,
739 rotate ? pl->out_rot_en_w : pl->out_rot_dis_w,
740 rotate ? sink->f_height : sink->f_width);
741 max_h = min_t(u32, FIMC_CAMIF_MAX_HEIGHT, sink->f_height);
742
743 if (target == V4L2_SEL_TGT_COMPOSE) {
744 min_w = min_t(u32, max_w, sink->f_width / max_sc_h);
745 min_h = min_t(u32, max_h, sink->f_height / max_sc_v);
746 if (rotate) {
747 swap(max_sc_h, max_sc_v);
748 swap(min_w, min_h);
749 }
750 }
751 v4l_bound_align_image(&r->width, min_w, max_w, ffs(min_sz) - 1,
752 &r->height, min_h, max_h, align_h,
753 align_sz);
754 /* Adjust left/top if crop/compose rectangle is out of bounds */
755 r->left = clamp_t(u32, r->left, 0, sink->f_width - r->width);
756 r->top = clamp_t(u32, r->top, 0, sink->f_height - r->height);
757 r->left = round_down(r->left, var->hor_offs_align);
758
759 dbg("target %#x: (%d,%d)/%dx%d, sink fmt: %dx%d",
760 target, r->left, r->top, r->width, r->height,
761 sink->f_width, sink->f_height);
762 }
763
764 /*
765 * The video node ioctl operations
766 */
767 static int fimc_vidioc_querycap_capture(struct file *file, void *priv,
768 struct v4l2_capability *cap)
769 {
770 struct fimc_dev *fimc = video_drvdata(file);
771
772 strncpy(cap->driver, fimc->pdev->name, sizeof(cap->driver) - 1);
773 strncpy(cap->card, fimc->pdev->name, sizeof(cap->card) - 1);
774 cap->bus_info[0] = 0;
775 cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_CAPTURE_MPLANE;
776
777 return 0;
778 }
779
780 static int fimc_cap_enum_fmt_mplane(struct file *file, void *priv,
781 struct v4l2_fmtdesc *f)
782 {
783 struct fimc_fmt *fmt;
784
785 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM | FMT_FLAGS_M2M,
786 f->index);
787 if (!fmt)
788 return -EINVAL;
789 strncpy(f->description, fmt->name, sizeof(f->description) - 1);
790 f->pixelformat = fmt->fourcc;
791 if (fmt->fourcc == V4L2_MBUS_FMT_JPEG_1X8)
792 f->flags |= V4L2_FMT_FLAG_COMPRESSED;
793 return 0;
794 }
795
796 /**
797 * fimc_pipeline_try_format - negotiate and/or set formats at pipeline
798 * elements
799 * @ctx: FIMC capture context
800 * @tfmt: media bus format to try/set on subdevs
801 * @fmt_id: fimc pixel format id corresponding to returned @tfmt (output)
802 * @set: true to set format on subdevs, false to try only
803 */
804 static int fimc_pipeline_try_format(struct fimc_ctx *ctx,
805 struct v4l2_mbus_framefmt *tfmt,
806 struct fimc_fmt **fmt_id,
807 bool set)
808 {
809 struct fimc_dev *fimc = ctx->fimc_dev;
810 struct v4l2_subdev *sd = fimc->pipeline.subdevs[IDX_SENSOR];
811 struct v4l2_subdev *csis = fimc->pipeline.subdevs[IDX_CSIS];
812 struct v4l2_subdev_format sfmt;
813 struct v4l2_mbus_framefmt *mf = &sfmt.format;
814 struct fimc_fmt *ffmt = NULL;
815 int ret, i = 0;
816
817 if (WARN_ON(!sd || !tfmt))
818 return -EINVAL;
819
820 memset(&sfmt, 0, sizeof(sfmt));
821 sfmt.format = *tfmt;
822
823 sfmt.which = set ? V4L2_SUBDEV_FORMAT_ACTIVE : V4L2_SUBDEV_FORMAT_TRY;
824 while (1) {
825 ffmt = fimc_find_format(NULL, mf->code != 0 ? &mf->code : NULL,
826 FMT_FLAGS_CAM, i++);
827 if (ffmt == NULL) {
828 /*
829 * Notify user-space if common pixel code for
830 * host and sensor does not exist.
831 */
832 return -EINVAL;
833 }
834 mf->code = tfmt->code = ffmt->mbus_code;
835
836 ret = v4l2_subdev_call(sd, pad, set_fmt, NULL, &sfmt);
837 if (ret)
838 return ret;
839 if (mf->code != tfmt->code) {
840 mf->code = 0;
841 continue;
842 }
843 if (mf->width != tfmt->width || mf->height != tfmt->height) {
844 u32 fcc = ffmt->fourcc;
845 tfmt->width = mf->width;
846 tfmt->height = mf->height;
847 ffmt = fimc_capture_try_format(ctx,
848 &tfmt->width, &tfmt->height,
849 NULL, &fcc, FIMC_SD_PAD_SOURCE);
850 if (ffmt && ffmt->mbus_code)
851 mf->code = ffmt->mbus_code;
852 if (mf->width != tfmt->width ||
853 mf->height != tfmt->height)
854 continue;
855 tfmt->code = mf->code;
856 }
857 if (csis)
858 ret = v4l2_subdev_call(csis, pad, set_fmt, NULL, &sfmt);
859
860 if (mf->code == tfmt->code &&
861 mf->width == tfmt->width && mf->height == tfmt->height)
862 break;
863 }
864
865 if (fmt_id && ffmt)
866 *fmt_id = ffmt;
867 *tfmt = *mf;
868
869 dbg("code: 0x%x, %dx%d, %p", mf->code, mf->width, mf->height, ffmt);
870 return 0;
871 }
872
873 /**
874 * fimc_get_sensor_frame_desc - query the sensor for media bus frame parameters
875 * @sensor: pointer to the sensor subdev
876 * @plane_fmt: provides plane sizes corresponding to the frame layout entries
877 * @try: true to set the frame parameters, false to query only
878 *
879 * This function is used by this driver only for compressed/blob data formats.
880 */
881 static int fimc_get_sensor_frame_desc(struct v4l2_subdev *sensor,
882 struct v4l2_plane_pix_format *plane_fmt,
883 unsigned int num_planes, bool try)
884 {
885 struct v4l2_mbus_frame_desc fd;
886 int i, ret;
887
888 for (i = 0; i < num_planes; i++)
889 fd.entry[i].length = plane_fmt[i].sizeimage;
890
891 if (try)
892 ret = v4l2_subdev_call(sensor, pad, set_frame_desc, 0, &fd);
893 else
894 ret = v4l2_subdev_call(sensor, pad, get_frame_desc, 0, &fd);
895
896 if (ret < 0)
897 return ret;
898
899 if (num_planes != fd.num_entries)
900 return -EINVAL;
901
902 for (i = 0; i < num_planes; i++)
903 plane_fmt[i].sizeimage = fd.entry[i].length;
904
905 if (fd.entry[0].length > FIMC_MAX_JPEG_BUF_SIZE) {
906 v4l2_err(sensor->v4l2_dev, "Unsupported buffer size: %u\n",
907 fd.entry[0].length);
908
909 return -EINVAL;
910 }
911
912 return 0;
913 }
914
915 static int fimc_cap_g_fmt_mplane(struct file *file, void *fh,
916 struct v4l2_format *f)
917 {
918 struct fimc_dev *fimc = video_drvdata(file);
919 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
920
921 return fimc_fill_format(&ctx->d_frame, f);
922 }
923
924 static int fimc_cap_try_fmt_mplane(struct file *file, void *fh,
925 struct v4l2_format *f)
926 {
927 struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
928 struct fimc_dev *fimc = video_drvdata(file);
929 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
930 struct v4l2_mbus_framefmt mf;
931 struct fimc_fmt *ffmt = NULL;
932
933 if (fimc_jpeg_fourcc(pix->pixelformat)) {
934 fimc_capture_try_format(ctx, &pix->width, &pix->height,
935 NULL, &pix->pixelformat,
936 FIMC_SD_PAD_SINK);
937 ctx->s_frame.f_width = pix->width;
938 ctx->s_frame.f_height = pix->height;
939 }
940 ffmt = fimc_capture_try_format(ctx, &pix->width, &pix->height,
941 NULL, &pix->pixelformat,
942 FIMC_SD_PAD_SOURCE);
943 if (!ffmt)
944 return -EINVAL;
945
946 if (!fimc->vid_cap.user_subdev_api) {
947 mf.width = pix->width;
948 mf.height = pix->height;
949 mf.code = ffmt->mbus_code;
950 fimc_md_graph_lock(fimc);
951 fimc_pipeline_try_format(ctx, &mf, &ffmt, false);
952 fimc_md_graph_unlock(fimc);
953 pix->width = mf.width;
954 pix->height = mf.height;
955 if (ffmt)
956 pix->pixelformat = ffmt->fourcc;
957 }
958
959 fimc_adjust_mplane_format(ffmt, pix->width, pix->height, pix);
960
961 if (ffmt->flags & FMT_FLAGS_COMPRESSED)
962 fimc_get_sensor_frame_desc(fimc->pipeline.subdevs[IDX_SENSOR],
963 pix->plane_fmt, ffmt->memplanes, true);
964
965 return 0;
966 }
967
968 static void fimc_capture_mark_jpeg_xfer(struct fimc_ctx *ctx,
969 enum fimc_color_fmt color)
970 {
971 bool jpeg = fimc_fmt_is_user_defined(color);
972
973 ctx->scaler.enabled = !jpeg;
974 fimc_ctrls_activate(ctx, !jpeg);
975
976 if (jpeg)
977 set_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state);
978 else
979 clear_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state);
980 }
981
982 static int fimc_capture_set_format(struct fimc_dev *fimc, struct v4l2_format *f)
983 {
984 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
985 struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
986 struct v4l2_mbus_framefmt *mf = &fimc->vid_cap.mf;
987 struct fimc_frame *ff = &ctx->d_frame;
988 struct fimc_fmt *s_fmt = NULL;
989 int ret, i;
990
991 if (vb2_is_busy(&fimc->vid_cap.vbq))
992 return -EBUSY;
993
994 /* Pre-configure format at camera interface input, for JPEG only */
995 if (fimc_jpeg_fourcc(pix->pixelformat)) {
996 fimc_capture_try_format(ctx, &pix->width, &pix->height,
997 NULL, &pix->pixelformat,
998 FIMC_SD_PAD_SINK);
999 ctx->s_frame.f_width = pix->width;
1000 ctx->s_frame.f_height = pix->height;
1001 }
1002 /* Try the format at the scaler and the DMA output */
1003 ff->fmt = fimc_capture_try_format(ctx, &pix->width, &pix->height,
1004 NULL, &pix->pixelformat,
1005 FIMC_SD_PAD_SOURCE);
1006 if (!ff->fmt)
1007 return -EINVAL;
1008
1009 /* Update RGB Alpha control state and value range */
1010 fimc_alpha_ctrl_update(ctx);
1011
1012 /* Try to match format at the host and the sensor */
1013 if (!fimc->vid_cap.user_subdev_api) {
1014 mf->code = ff->fmt->mbus_code;
1015 mf->width = pix->width;
1016 mf->height = pix->height;
1017
1018 fimc_md_graph_lock(fimc);
1019 ret = fimc_pipeline_try_format(ctx, mf, &s_fmt, true);
1020 fimc_md_graph_unlock(fimc);
1021 if (ret)
1022 return ret;
1023 pix->width = mf->width;
1024 pix->height = mf->height;
1025 }
1026
1027 fimc_adjust_mplane_format(ff->fmt, pix->width, pix->height, pix);
1028
1029 if (ff->fmt->flags & FMT_FLAGS_COMPRESSED) {
1030 ret = fimc_get_sensor_frame_desc(fimc->pipeline.subdevs[IDX_SENSOR],
1031 pix->plane_fmt, ff->fmt->memplanes,
1032 true);
1033 if (ret < 0)
1034 return ret;
1035 }
1036
1037 for (i = 0; i < ff->fmt->memplanes; i++)
1038 ff->payload[i] = pix->plane_fmt[i].sizeimage;
1039
1040 set_frame_bounds(ff, pix->width, pix->height);
1041 /* Reset the composition rectangle if not yet configured */
1042 if (!(ctx->state & FIMC_COMPOSE))
1043 set_frame_crop(ff, 0, 0, pix->width, pix->height);
1044
1045 fimc_capture_mark_jpeg_xfer(ctx, ff->fmt->color);
1046
1047 /* Reset cropping and set format at the camera interface input */
1048 if (!fimc->vid_cap.user_subdev_api) {
1049 ctx->s_frame.fmt = s_fmt;
1050 set_frame_bounds(&ctx->s_frame, pix->width, pix->height);
1051 set_frame_crop(&ctx->s_frame, 0, 0, pix->width, pix->height);
1052 }
1053
1054 return ret;
1055 }
1056
1057 static int fimc_cap_s_fmt_mplane(struct file *file, void *priv,
1058 struct v4l2_format *f)
1059 {
1060 struct fimc_dev *fimc = video_drvdata(file);
1061
1062 return fimc_capture_set_format(fimc, f);
1063 }
1064
1065 static int fimc_cap_enum_input(struct file *file, void *priv,
1066 struct v4l2_input *i)
1067 {
1068 struct fimc_dev *fimc = video_drvdata(file);
1069 struct v4l2_subdev *sd = fimc->pipeline.subdevs[IDX_SENSOR];
1070
1071 if (i->index != 0)
1072 return -EINVAL;
1073
1074 i->type = V4L2_INPUT_TYPE_CAMERA;
1075 if (sd)
1076 strlcpy(i->name, sd->name, sizeof(i->name));
1077 return 0;
1078 }
1079
1080 static int fimc_cap_s_input(struct file *file, void *priv, unsigned int i)
1081 {
1082 return i == 0 ? i : -EINVAL;
1083 }
1084
1085 static int fimc_cap_g_input(struct file *file, void *priv, unsigned int *i)
1086 {
1087 *i = 0;
1088 return 0;
1089 }
1090
1091 /**
1092 * fimc_pipeline_validate - check for formats inconsistencies
1093 * between source and sink pad of each link
1094 *
1095 * Return 0 if all formats match or -EPIPE otherwise.
1096 */
1097 static int fimc_pipeline_validate(struct fimc_dev *fimc)
1098 {
1099 struct v4l2_subdev_format sink_fmt, src_fmt;
1100 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
1101 struct v4l2_subdev *sd;
1102 struct media_pad *pad;
1103 int ret;
1104
1105 /* Start with the video capture node pad */
1106 pad = media_entity_remote_source(&vid_cap->vd_pad);
1107 if (pad == NULL)
1108 return -EPIPE;
1109 /* FIMC.{N} subdevice */
1110 sd = media_entity_to_v4l2_subdev(pad->entity);
1111
1112 while (1) {
1113 /* Retrieve format at the sink pad */
1114 pad = &sd->entity.pads[0];
1115 if (!(pad->flags & MEDIA_PAD_FL_SINK))
1116 break;
1117 /* Don't call FIMC subdev operation to avoid nested locking */
1118 if (sd == &fimc->vid_cap.subdev) {
1119 struct fimc_frame *ff = &vid_cap->ctx->s_frame;
1120 sink_fmt.format.width = ff->f_width;
1121 sink_fmt.format.height = ff->f_height;
1122 sink_fmt.format.code = ff->fmt ? ff->fmt->mbus_code : 0;
1123 } else {
1124 sink_fmt.pad = pad->index;
1125 sink_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
1126 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &sink_fmt);
1127 if (ret < 0 && ret != -ENOIOCTLCMD)
1128 return -EPIPE;
1129 }
1130 /* Retrieve format at the source pad */
1131 pad = media_entity_remote_source(pad);
1132 if (pad == NULL ||
1133 media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
1134 break;
1135
1136 sd = media_entity_to_v4l2_subdev(pad->entity);
1137 src_fmt.pad = pad->index;
1138 src_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
1139 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &src_fmt);
1140 if (ret < 0 && ret != -ENOIOCTLCMD)
1141 return -EPIPE;
1142
1143 if (src_fmt.format.width != sink_fmt.format.width ||
1144 src_fmt.format.height != sink_fmt.format.height ||
1145 src_fmt.format.code != sink_fmt.format.code)
1146 return -EPIPE;
1147
1148 if (sd == fimc->pipeline.subdevs[IDX_SENSOR] &&
1149 fimc_user_defined_mbus_fmt(src_fmt.format.code)) {
1150 struct v4l2_plane_pix_format plane_fmt[FIMC_MAX_PLANES];
1151 struct fimc_frame *frame = &vid_cap->ctx->d_frame;
1152 unsigned int i;
1153
1154 ret = fimc_get_sensor_frame_desc(sd, plane_fmt,
1155 frame->fmt->memplanes,
1156 false);
1157 if (ret < 0)
1158 return -EPIPE;
1159
1160 for (i = 0; i < frame->fmt->memplanes; i++)
1161 if (frame->payload[i] < plane_fmt[i].sizeimage)
1162 return -EPIPE;
1163 }
1164 }
1165 return 0;
1166 }
1167
1168 static int fimc_cap_streamon(struct file *file, void *priv,
1169 enum v4l2_buf_type type)
1170 {
1171 struct fimc_dev *fimc = video_drvdata(file);
1172 struct fimc_pipeline *p = &fimc->pipeline;
1173 struct v4l2_subdev *sd = p->subdevs[IDX_SENSOR];
1174 int ret;
1175
1176 if (fimc_capture_active(fimc))
1177 return -EBUSY;
1178
1179 ret = media_entity_pipeline_start(&sd->entity, p->m_pipeline);
1180 if (ret < 0)
1181 return ret;
1182
1183 if (fimc->vid_cap.user_subdev_api) {
1184 ret = fimc_pipeline_validate(fimc);
1185 if (ret < 0) {
1186 media_entity_pipeline_stop(&sd->entity);
1187 return ret;
1188 }
1189 }
1190 return vb2_streamon(&fimc->vid_cap.vbq, type);
1191 }
1192
1193 static int fimc_cap_streamoff(struct file *file, void *priv,
1194 enum v4l2_buf_type type)
1195 {
1196 struct fimc_dev *fimc = video_drvdata(file);
1197 struct v4l2_subdev *sd = fimc->pipeline.subdevs[IDX_SENSOR];
1198 int ret;
1199
1200 ret = vb2_streamoff(&fimc->vid_cap.vbq, type);
1201 if (ret == 0)
1202 media_entity_pipeline_stop(&sd->entity);
1203 return ret;
1204 }
1205
1206 static int fimc_cap_reqbufs(struct file *file, void *priv,
1207 struct v4l2_requestbuffers *reqbufs)
1208 {
1209 struct fimc_dev *fimc = video_drvdata(file);
1210 int ret = vb2_reqbufs(&fimc->vid_cap.vbq, reqbufs);
1211
1212 if (!ret)
1213 fimc->vid_cap.reqbufs_count = reqbufs->count;
1214 return ret;
1215 }
1216
1217 static int fimc_cap_querybuf(struct file *file, void *priv,
1218 struct v4l2_buffer *buf)
1219 {
1220 struct fimc_dev *fimc = video_drvdata(file);
1221
1222 return vb2_querybuf(&fimc->vid_cap.vbq, buf);
1223 }
1224
1225 static int fimc_cap_qbuf(struct file *file, void *priv,
1226 struct v4l2_buffer *buf)
1227 {
1228 struct fimc_dev *fimc = video_drvdata(file);
1229
1230 return vb2_qbuf(&fimc->vid_cap.vbq, buf);
1231 }
1232
1233 static int fimc_cap_dqbuf(struct file *file, void *priv,
1234 struct v4l2_buffer *buf)
1235 {
1236 struct fimc_dev *fimc = video_drvdata(file);
1237
1238 return vb2_dqbuf(&fimc->vid_cap.vbq, buf, file->f_flags & O_NONBLOCK);
1239 }
1240
1241 static int fimc_cap_create_bufs(struct file *file, void *priv,
1242 struct v4l2_create_buffers *create)
1243 {
1244 struct fimc_dev *fimc = video_drvdata(file);
1245
1246 return vb2_create_bufs(&fimc->vid_cap.vbq, create);
1247 }
1248
1249 static int fimc_cap_prepare_buf(struct file *file, void *priv,
1250 struct v4l2_buffer *b)
1251 {
1252 struct fimc_dev *fimc = video_drvdata(file);
1253
1254 return vb2_prepare_buf(&fimc->vid_cap.vbq, b);
1255 }
1256
1257 static int fimc_cap_g_selection(struct file *file, void *fh,
1258 struct v4l2_selection *s)
1259 {
1260 struct fimc_dev *fimc = video_drvdata(file);
1261 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1262 struct fimc_frame *f = &ctx->s_frame;
1263
1264 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1265 return -EINVAL;
1266
1267 switch (s->target) {
1268 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
1269 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1270 f = &ctx->d_frame;
1271 case V4L2_SEL_TGT_CROP_BOUNDS:
1272 case V4L2_SEL_TGT_CROP_DEFAULT:
1273 s->r.left = 0;
1274 s->r.top = 0;
1275 s->r.width = f->o_width;
1276 s->r.height = f->o_height;
1277 return 0;
1278
1279 case V4L2_SEL_TGT_COMPOSE:
1280 f = &ctx->d_frame;
1281 case V4L2_SEL_TGT_CROP:
1282 s->r.left = f->offs_h;
1283 s->r.top = f->offs_v;
1284 s->r.width = f->width;
1285 s->r.height = f->height;
1286 return 0;
1287 }
1288
1289 return -EINVAL;
1290 }
1291
1292 /* Return 1 if rectangle a is enclosed in rectangle b, or 0 otherwise. */
1293 static int enclosed_rectangle(struct v4l2_rect *a, struct v4l2_rect *b)
1294 {
1295 if (a->left < b->left || a->top < b->top)
1296 return 0;
1297 if (a->left + a->width > b->left + b->width)
1298 return 0;
1299 if (a->top + a->height > b->top + b->height)
1300 return 0;
1301
1302 return 1;
1303 }
1304
1305 static int fimc_cap_s_selection(struct file *file, void *fh,
1306 struct v4l2_selection *s)
1307 {
1308 struct fimc_dev *fimc = video_drvdata(file);
1309 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1310 struct v4l2_rect rect = s->r;
1311 struct fimc_frame *f;
1312 unsigned long flags;
1313
1314 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1315 return -EINVAL;
1316
1317 if (s->target == V4L2_SEL_TGT_COMPOSE)
1318 f = &ctx->d_frame;
1319 else if (s->target == V4L2_SEL_TGT_CROP)
1320 f = &ctx->s_frame;
1321 else
1322 return -EINVAL;
1323
1324 fimc_capture_try_selection(ctx, &rect, s->target);
1325
1326 if (s->flags & V4L2_SEL_FLAG_LE &&
1327 !enclosed_rectangle(&rect, &s->r))
1328 return -ERANGE;
1329
1330 if (s->flags & V4L2_SEL_FLAG_GE &&
1331 !enclosed_rectangle(&s->r, &rect))
1332 return -ERANGE;
1333
1334 s->r = rect;
1335 spin_lock_irqsave(&fimc->slock, flags);
1336 set_frame_crop(f, s->r.left, s->r.top, s->r.width,
1337 s->r.height);
1338 spin_unlock_irqrestore(&fimc->slock, flags);
1339
1340 set_bit(ST_CAPT_APPLY_CFG, &fimc->state);
1341 return 0;
1342 }
1343
1344 static const struct v4l2_ioctl_ops fimc_capture_ioctl_ops = {
1345 .vidioc_querycap = fimc_vidioc_querycap_capture,
1346
1347 .vidioc_enum_fmt_vid_cap_mplane = fimc_cap_enum_fmt_mplane,
1348 .vidioc_try_fmt_vid_cap_mplane = fimc_cap_try_fmt_mplane,
1349 .vidioc_s_fmt_vid_cap_mplane = fimc_cap_s_fmt_mplane,
1350 .vidioc_g_fmt_vid_cap_mplane = fimc_cap_g_fmt_mplane,
1351
1352 .vidioc_reqbufs = fimc_cap_reqbufs,
1353 .vidioc_querybuf = fimc_cap_querybuf,
1354
1355 .vidioc_qbuf = fimc_cap_qbuf,
1356 .vidioc_dqbuf = fimc_cap_dqbuf,
1357
1358 .vidioc_prepare_buf = fimc_cap_prepare_buf,
1359 .vidioc_create_bufs = fimc_cap_create_bufs,
1360
1361 .vidioc_streamon = fimc_cap_streamon,
1362 .vidioc_streamoff = fimc_cap_streamoff,
1363
1364 .vidioc_g_selection = fimc_cap_g_selection,
1365 .vidioc_s_selection = fimc_cap_s_selection,
1366
1367 .vidioc_enum_input = fimc_cap_enum_input,
1368 .vidioc_s_input = fimc_cap_s_input,
1369 .vidioc_g_input = fimc_cap_g_input,
1370 };
1371
1372 /* Capture subdev media entity operations */
1373 static int fimc_link_setup(struct media_entity *entity,
1374 const struct media_pad *local,
1375 const struct media_pad *remote, u32 flags)
1376 {
1377 struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
1378 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1379
1380 if (media_entity_type(remote->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
1381 return -EINVAL;
1382
1383 if (WARN_ON(fimc == NULL))
1384 return 0;
1385
1386 dbg("%s --> %s, flags: 0x%x. input: 0x%x",
1387 local->entity->name, remote->entity->name, flags,
1388 fimc->vid_cap.input);
1389
1390 if (flags & MEDIA_LNK_FL_ENABLED) {
1391 if (fimc->vid_cap.input != 0)
1392 return -EBUSY;
1393 fimc->vid_cap.input = sd->grp_id;
1394 return 0;
1395 }
1396
1397 fimc->vid_cap.input = 0;
1398 return 0;
1399 }
1400
1401 static const struct media_entity_operations fimc_sd_media_ops = {
1402 .link_setup = fimc_link_setup,
1403 };
1404
1405 /**
1406 * fimc_sensor_notify - v4l2_device notification from a sensor subdev
1407 * @sd: pointer to a subdev generating the notification
1408 * @notification: the notification type, must be S5P_FIMC_TX_END_NOTIFY
1409 * @arg: pointer to an u32 type integer that stores the frame payload value
1410 *
1411 * The End Of Frame notification sent by sensor subdev in its still capture
1412 * mode. If there is only a single VSYNC generated by the sensor at the
1413 * beginning of a frame transmission, FIMC does not issue the LastIrq
1414 * (end of frame) interrupt. And this notification is used to complete the
1415 * frame capture and returning a buffer to user-space. Subdev drivers should
1416 * call this notification from their last 'End of frame capture' interrupt.
1417 */
1418 void fimc_sensor_notify(struct v4l2_subdev *sd, unsigned int notification,
1419 void *arg)
1420 {
1421 struct fimc_sensor_info *sensor;
1422 struct fimc_vid_buffer *buf;
1423 struct fimc_md *fmd;
1424 struct fimc_dev *fimc;
1425 unsigned long flags;
1426
1427 if (sd == NULL)
1428 return;
1429
1430 sensor = v4l2_get_subdev_hostdata(sd);
1431 fmd = entity_to_fimc_mdev(&sd->entity);
1432
1433 spin_lock_irqsave(&fmd->slock, flags);
1434 fimc = sensor ? sensor->host : NULL;
1435
1436 if (fimc && arg && notification == S5P_FIMC_TX_END_NOTIFY &&
1437 test_bit(ST_CAPT_PEND, &fimc->state)) {
1438 unsigned long irq_flags;
1439 spin_lock_irqsave(&fimc->slock, irq_flags);
1440 if (!list_empty(&fimc->vid_cap.active_buf_q)) {
1441 buf = list_entry(fimc->vid_cap.active_buf_q.next,
1442 struct fimc_vid_buffer, list);
1443 vb2_set_plane_payload(&buf->vb, 0, *((u32 *)arg));
1444 }
1445 fimc_capture_irq_handler(fimc, 1);
1446 fimc_deactivate_capture(fimc);
1447 spin_unlock_irqrestore(&fimc->slock, irq_flags);
1448 }
1449 spin_unlock_irqrestore(&fmd->slock, flags);
1450 }
1451
1452 static int fimc_subdev_enum_mbus_code(struct v4l2_subdev *sd,
1453 struct v4l2_subdev_fh *fh,
1454 struct v4l2_subdev_mbus_code_enum *code)
1455 {
1456 struct fimc_fmt *fmt;
1457
1458 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, code->index);
1459 if (!fmt)
1460 return -EINVAL;
1461 code->code = fmt->mbus_code;
1462 return 0;
1463 }
1464
1465 static int fimc_subdev_get_fmt(struct v4l2_subdev *sd,
1466 struct v4l2_subdev_fh *fh,
1467 struct v4l2_subdev_format *fmt)
1468 {
1469 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1470 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1471 struct v4l2_mbus_framefmt *mf;
1472 struct fimc_frame *ff;
1473
1474 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1475 mf = v4l2_subdev_get_try_format(fh, fmt->pad);
1476 fmt->format = *mf;
1477 return 0;
1478 }
1479 mf = &fmt->format;
1480 mf->colorspace = V4L2_COLORSPACE_JPEG;
1481 ff = fmt->pad == FIMC_SD_PAD_SINK ? &ctx->s_frame : &ctx->d_frame;
1482
1483 mutex_lock(&fimc->lock);
1484 /* The pixel code is same on both input and output pad */
1485 if (!WARN_ON(ctx->s_frame.fmt == NULL))
1486 mf->code = ctx->s_frame.fmt->mbus_code;
1487 mf->width = ff->f_width;
1488 mf->height = ff->f_height;
1489 mutex_unlock(&fimc->lock);
1490
1491 return 0;
1492 }
1493
1494 static int fimc_subdev_set_fmt(struct v4l2_subdev *sd,
1495 struct v4l2_subdev_fh *fh,
1496 struct v4l2_subdev_format *fmt)
1497 {
1498 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1499 struct v4l2_mbus_framefmt *mf = &fmt->format;
1500 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1501 struct fimc_frame *ff;
1502 struct fimc_fmt *ffmt;
1503
1504 dbg("pad%d: code: 0x%x, %dx%d",
1505 fmt->pad, mf->code, mf->width, mf->height);
1506
1507 if (fmt->pad == FIMC_SD_PAD_SOURCE &&
1508 vb2_is_busy(&fimc->vid_cap.vbq))
1509 return -EBUSY;
1510
1511 mutex_lock(&fimc->lock);
1512 ffmt = fimc_capture_try_format(ctx, &mf->width, &mf->height,
1513 &mf->code, NULL, fmt->pad);
1514 mutex_unlock(&fimc->lock);
1515 mf->colorspace = V4L2_COLORSPACE_JPEG;
1516
1517 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1518 mf = v4l2_subdev_get_try_format(fh, fmt->pad);
1519 *mf = fmt->format;
1520 return 0;
1521 }
1522 /* Update RGB Alpha control state and value range */
1523 fimc_alpha_ctrl_update(ctx);
1524
1525 fimc_capture_mark_jpeg_xfer(ctx, ffmt->color);
1526
1527 ff = fmt->pad == FIMC_SD_PAD_SINK ?
1528 &ctx->s_frame : &ctx->d_frame;
1529
1530 mutex_lock(&fimc->lock);
1531 set_frame_bounds(ff, mf->width, mf->height);
1532 fimc->vid_cap.mf = *mf;
1533 ff->fmt = ffmt;
1534
1535 /* Reset the crop rectangle if required. */
1536 if (!(fmt->pad == FIMC_SD_PAD_SOURCE && (ctx->state & FIMC_COMPOSE)))
1537 set_frame_crop(ff, 0, 0, mf->width, mf->height);
1538
1539 if (fmt->pad == FIMC_SD_PAD_SINK)
1540 ctx->state &= ~FIMC_COMPOSE;
1541 mutex_unlock(&fimc->lock);
1542 return 0;
1543 }
1544
1545 static int fimc_subdev_get_selection(struct v4l2_subdev *sd,
1546 struct v4l2_subdev_fh *fh,
1547 struct v4l2_subdev_selection *sel)
1548 {
1549 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1550 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1551 struct fimc_frame *f = &ctx->s_frame;
1552 struct v4l2_rect *r = &sel->r;
1553 struct v4l2_rect *try_sel;
1554
1555 if (sel->pad != FIMC_SD_PAD_SINK)
1556 return -EINVAL;
1557
1558 mutex_lock(&fimc->lock);
1559
1560 switch (sel->target) {
1561 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1562 f = &ctx->d_frame;
1563 case V4L2_SEL_TGT_CROP_BOUNDS:
1564 r->width = f->o_width;
1565 r->height = f->o_height;
1566 r->left = 0;
1567 r->top = 0;
1568 mutex_unlock(&fimc->lock);
1569 return 0;
1570
1571 case V4L2_SEL_TGT_CROP:
1572 try_sel = v4l2_subdev_get_try_crop(fh, sel->pad);
1573 break;
1574 case V4L2_SEL_TGT_COMPOSE:
1575 try_sel = v4l2_subdev_get_try_compose(fh, sel->pad);
1576 f = &ctx->d_frame;
1577 break;
1578 default:
1579 mutex_unlock(&fimc->lock);
1580 return -EINVAL;
1581 }
1582
1583 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1584 sel->r = *try_sel;
1585 } else {
1586 r->left = f->offs_h;
1587 r->top = f->offs_v;
1588 r->width = f->width;
1589 r->height = f->height;
1590 }
1591
1592 dbg("target %#x: l:%d, t:%d, %dx%d, f_w: %d, f_h: %d",
1593 sel->pad, r->left, r->top, r->width, r->height,
1594 f->f_width, f->f_height);
1595
1596 mutex_unlock(&fimc->lock);
1597 return 0;
1598 }
1599
1600 static int fimc_subdev_set_selection(struct v4l2_subdev *sd,
1601 struct v4l2_subdev_fh *fh,
1602 struct v4l2_subdev_selection *sel)
1603 {
1604 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1605 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1606 struct fimc_frame *f = &ctx->s_frame;
1607 struct v4l2_rect *r = &sel->r;
1608 struct v4l2_rect *try_sel;
1609 unsigned long flags;
1610
1611 if (sel->pad != FIMC_SD_PAD_SINK)
1612 return -EINVAL;
1613
1614 mutex_lock(&fimc->lock);
1615 fimc_capture_try_selection(ctx, r, V4L2_SEL_TGT_CROP);
1616
1617 switch (sel->target) {
1618 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1619 f = &ctx->d_frame;
1620 case V4L2_SEL_TGT_CROP_BOUNDS:
1621 r->width = f->o_width;
1622 r->height = f->o_height;
1623 r->left = 0;
1624 r->top = 0;
1625 mutex_unlock(&fimc->lock);
1626 return 0;
1627
1628 case V4L2_SEL_TGT_CROP:
1629 try_sel = v4l2_subdev_get_try_crop(fh, sel->pad);
1630 break;
1631 case V4L2_SEL_TGT_COMPOSE:
1632 try_sel = v4l2_subdev_get_try_compose(fh, sel->pad);
1633 f = &ctx->d_frame;
1634 break;
1635 default:
1636 mutex_unlock(&fimc->lock);
1637 return -EINVAL;
1638 }
1639
1640 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1641 *try_sel = sel->r;
1642 } else {
1643 spin_lock_irqsave(&fimc->slock, flags);
1644 set_frame_crop(f, r->left, r->top, r->width, r->height);
1645 set_bit(ST_CAPT_APPLY_CFG, &fimc->state);
1646 spin_unlock_irqrestore(&fimc->slock, flags);
1647 if (sel->target == V4L2_SEL_TGT_COMPOSE)
1648 ctx->state |= FIMC_COMPOSE;
1649 }
1650
1651 dbg("target %#x: (%d,%d)/%dx%d", sel->target, r->left, r->top,
1652 r->width, r->height);
1653
1654 mutex_unlock(&fimc->lock);
1655 return 0;
1656 }
1657
1658 static struct v4l2_subdev_pad_ops fimc_subdev_pad_ops = {
1659 .enum_mbus_code = fimc_subdev_enum_mbus_code,
1660 .get_selection = fimc_subdev_get_selection,
1661 .set_selection = fimc_subdev_set_selection,
1662 .get_fmt = fimc_subdev_get_fmt,
1663 .set_fmt = fimc_subdev_set_fmt,
1664 };
1665
1666 static struct v4l2_subdev_ops fimc_subdev_ops = {
1667 .pad = &fimc_subdev_pad_ops,
1668 };
1669
1670 /* Set default format at the sensor and host interface */
1671 static int fimc_capture_set_default_format(struct fimc_dev *fimc)
1672 {
1673 struct v4l2_format fmt = {
1674 .type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
1675 .fmt.pix_mp = {
1676 .width = 640,
1677 .height = 480,
1678 .pixelformat = V4L2_PIX_FMT_YUYV,
1679 .field = V4L2_FIELD_NONE,
1680 .colorspace = V4L2_COLORSPACE_JPEG,
1681 },
1682 };
1683
1684 return fimc_capture_set_format(fimc, &fmt);
1685 }
1686
1687 /* fimc->lock must be already initialized */
1688 static int fimc_register_capture_device(struct fimc_dev *fimc,
1689 struct v4l2_device *v4l2_dev)
1690 {
1691 struct video_device *vfd = &fimc->vid_cap.vfd;
1692 struct fimc_vid_cap *vid_cap;
1693 struct fimc_ctx *ctx;
1694 struct vb2_queue *q;
1695 int ret = -ENOMEM;
1696
1697 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
1698 if (!ctx)
1699 return -ENOMEM;
1700
1701 ctx->fimc_dev = fimc;
1702 ctx->in_path = FIMC_IO_CAMERA;
1703 ctx->out_path = FIMC_IO_DMA;
1704 ctx->state = FIMC_CTX_CAP;
1705 ctx->s_frame.fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, 0);
1706 ctx->d_frame.fmt = ctx->s_frame.fmt;
1707
1708 memset(vfd, 0, sizeof(*vfd));
1709 snprintf(vfd->name, sizeof(vfd->name), "fimc.%d.capture", fimc->id);
1710
1711 vfd->fops = &fimc_capture_fops;
1712 vfd->ioctl_ops = &fimc_capture_ioctl_ops;
1713 vfd->v4l2_dev = v4l2_dev;
1714 vfd->minor = -1;
1715 vfd->release = video_device_release_empty;
1716 vfd->lock = &fimc->lock;
1717
1718 video_set_drvdata(vfd, fimc);
1719
1720 vid_cap = &fimc->vid_cap;
1721 vid_cap->active_buf_cnt = 0;
1722 vid_cap->reqbufs_count = 0;
1723 vid_cap->refcnt = 0;
1724
1725 INIT_LIST_HEAD(&vid_cap->pending_buf_q);
1726 INIT_LIST_HEAD(&vid_cap->active_buf_q);
1727 vid_cap->ctx = ctx;
1728
1729 q = &fimc->vid_cap.vbq;
1730 memset(q, 0, sizeof(*q));
1731 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1732 q->io_modes = VB2_MMAP | VB2_USERPTR;
1733 q->drv_priv = fimc->vid_cap.ctx;
1734 q->ops = &fimc_capture_qops;
1735 q->mem_ops = &vb2_dma_contig_memops;
1736 q->buf_struct_size = sizeof(struct fimc_vid_buffer);
1737
1738 ret = vb2_queue_init(q);
1739 if (ret)
1740 goto err_ent;
1741
1742 vid_cap->vd_pad.flags = MEDIA_PAD_FL_SINK;
1743 ret = media_entity_init(&vfd->entity, 1, &vid_cap->vd_pad, 0);
1744 if (ret)
1745 goto err_ent;
1746
1747 ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1);
1748 if (ret)
1749 goto err_vd;
1750
1751 v4l2_info(v4l2_dev, "Registered %s as /dev/%s\n",
1752 vfd->name, video_device_node_name(vfd));
1753
1754 vfd->ctrl_handler = &ctx->ctrls.handler;
1755 return 0;
1756
1757 err_vd:
1758 media_entity_cleanup(&vfd->entity);
1759 err_ent:
1760 kfree(ctx);
1761 return ret;
1762 }
1763
1764 static int fimc_capture_subdev_registered(struct v4l2_subdev *sd)
1765 {
1766 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1767 int ret;
1768
1769 if (fimc == NULL)
1770 return -ENXIO;
1771
1772 ret = fimc_register_m2m_device(fimc, sd->v4l2_dev);
1773 if (ret)
1774 return ret;
1775
1776 fimc->pipeline_ops = v4l2_get_subdev_hostdata(sd);
1777
1778 ret = fimc_register_capture_device(fimc, sd->v4l2_dev);
1779 if (ret) {
1780 fimc_unregister_m2m_device(fimc);
1781 fimc->pipeline_ops = NULL;
1782 }
1783
1784 return ret;
1785 }
1786
1787 static void fimc_capture_subdev_unregistered(struct v4l2_subdev *sd)
1788 {
1789 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1790
1791 if (fimc == NULL)
1792 return;
1793
1794 fimc_unregister_m2m_device(fimc);
1795
1796 if (video_is_registered(&fimc->vid_cap.vfd)) {
1797 video_unregister_device(&fimc->vid_cap.vfd);
1798 media_entity_cleanup(&fimc->vid_cap.vfd.entity);
1799 fimc->pipeline_ops = NULL;
1800 }
1801 kfree(fimc->vid_cap.ctx);
1802 fimc->vid_cap.ctx = NULL;
1803 }
1804
1805 static const struct v4l2_subdev_internal_ops fimc_capture_sd_internal_ops = {
1806 .registered = fimc_capture_subdev_registered,
1807 .unregistered = fimc_capture_subdev_unregistered,
1808 };
1809
1810 int fimc_initialize_capture_subdev(struct fimc_dev *fimc)
1811 {
1812 struct v4l2_subdev *sd = &fimc->vid_cap.subdev;
1813 int ret;
1814
1815 v4l2_subdev_init(sd, &fimc_subdev_ops);
1816 sd->flags = V4L2_SUBDEV_FL_HAS_DEVNODE;
1817 snprintf(sd->name, sizeof(sd->name), "FIMC.%d", fimc->pdev->id);
1818
1819 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
1820 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
1821 ret = media_entity_init(&sd->entity, FIMC_SD_PADS_NUM,
1822 fimc->vid_cap.sd_pads, 0);
1823 if (ret)
1824 return ret;
1825
1826 sd->entity.ops = &fimc_sd_media_ops;
1827 sd->internal_ops = &fimc_capture_sd_internal_ops;
1828 v4l2_set_subdevdata(sd, fimc);
1829 return 0;
1830 }
1831
1832 void fimc_unregister_capture_subdev(struct fimc_dev *fimc)
1833 {
1834 struct v4l2_subdev *sd = &fimc->vid_cap.subdev;
1835
1836 v4l2_device_unregister_subdev(sd);
1837 media_entity_cleanup(&sd->entity);
1838 v4l2_set_subdevdata(sd, NULL);
1839 }
Linux kernel - Deliverables
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