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Merge tag 'disintegrate-openrisc-20121009' of git://git.infradead.org/users/dhowells...
[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 if (mutex_lock_interruptible(&fimc->lock))
560 return -ERESTARTSYS;
561
562 if (--fimc->vid_cap.refcnt == 0) {
563 clear_bit(ST_CAPT_BUSY, &fimc->state);
564 fimc_stop_capture(fimc, false);
565 fimc_pipeline_call(fimc, close, &fimc->pipeline);
566 clear_bit(ST_CAPT_SUSPENDED, &fimc->state);
567 }
568
569 pm_runtime_put(&fimc->pdev->dev);
570
571 if (fimc->vid_cap.refcnt == 0) {
572 vb2_queue_release(&fimc->vid_cap.vbq);
573 fimc_ctrls_delete(fimc->vid_cap.ctx);
574 }
575
576 ret = v4l2_fh_release(file);
577
578 mutex_unlock(&fimc->lock);
579 return ret;
580 }
581
582 static unsigned int fimc_capture_poll(struct file *file,
583 struct poll_table_struct *wait)
584 {
585 struct fimc_dev *fimc = video_drvdata(file);
586 int ret;
587
588 if (mutex_lock_interruptible(&fimc->lock))
589 return POLL_ERR;
590
591 ret = vb2_poll(&fimc->vid_cap.vbq, file, wait);
592 mutex_unlock(&fimc->lock);
593
594 return ret;
595 }
596
597 static int fimc_capture_mmap(struct file *file, struct vm_area_struct *vma)
598 {
599 struct fimc_dev *fimc = video_drvdata(file);
600 int ret;
601
602 if (mutex_lock_interruptible(&fimc->lock))
603 return -ERESTARTSYS;
604
605 ret = vb2_mmap(&fimc->vid_cap.vbq, vma);
606 mutex_unlock(&fimc->lock);
607
608 return ret;
609 }
610
611 static const struct v4l2_file_operations fimc_capture_fops = {
612 .owner = THIS_MODULE,
613 .open = fimc_capture_open,
614 .release = fimc_capture_close,
615 .poll = fimc_capture_poll,
616 .unlocked_ioctl = video_ioctl2,
617 .mmap = fimc_capture_mmap,
618 };
619
620 /*
621 * Format and crop negotiation helpers
622 */
623
624 static struct fimc_fmt *fimc_capture_try_format(struct fimc_ctx *ctx,
625 u32 *width, u32 *height,
626 u32 *code, u32 *fourcc, int pad)
627 {
628 bool rotation = ctx->rotation == 90 || ctx->rotation == 270;
629 struct fimc_dev *fimc = ctx->fimc_dev;
630 struct fimc_variant *var = fimc->variant;
631 struct fimc_pix_limit *pl = var->pix_limit;
632 struct fimc_frame *dst = &ctx->d_frame;
633 u32 depth, min_w, max_w, min_h, align_h = 3;
634 u32 mask = FMT_FLAGS_CAM;
635 struct fimc_fmt *ffmt;
636
637 /* Conversion from/to JPEG or User Defined format is not supported */
638 if (code && ctx->s_frame.fmt && pad == FIMC_SD_PAD_SOURCE &&
639 fimc_fmt_is_user_defined(ctx->s_frame.fmt->color))
640 *code = ctx->s_frame.fmt->mbus_code;
641
642 if (fourcc && *fourcc != V4L2_PIX_FMT_JPEG && pad != FIMC_SD_PAD_SINK)
643 mask |= FMT_FLAGS_M2M;
644
645 ffmt = fimc_find_format(fourcc, code, mask, 0);
646 if (WARN_ON(!ffmt))
647 return NULL;
648 if (code)
649 *code = ffmt->mbus_code;
650 if (fourcc)
651 *fourcc = ffmt->fourcc;
652
653 if (pad == FIMC_SD_PAD_SINK) {
654 max_w = fimc_fmt_is_user_defined(ffmt->color) ?
655 pl->scaler_dis_w : pl->scaler_en_w;
656 /* Apply the camera input interface pixel constraints */
657 v4l_bound_align_image(width, max_t(u32, *width, 32), max_w, 4,
658 height, max_t(u32, *height, 32),
659 FIMC_CAMIF_MAX_HEIGHT,
660 fimc_fmt_is_user_defined(ffmt->color) ?
661 3 : 1,
662 0);
663 return ffmt;
664 }
665 /* Can't scale or crop in transparent (JPEG) transfer mode */
666 if (fimc_fmt_is_user_defined(ffmt->color)) {
667 *width = ctx->s_frame.f_width;
668 *height = ctx->s_frame.f_height;
669 return ffmt;
670 }
671 /* Apply the scaler and the output DMA constraints */
672 max_w = rotation ? pl->out_rot_en_w : pl->out_rot_dis_w;
673 if (ctx->state & FIMC_COMPOSE) {
674 min_w = dst->offs_h + dst->width;
675 min_h = dst->offs_v + dst->height;
676 } else {
677 min_w = var->min_out_pixsize;
678 min_h = var->min_out_pixsize;
679 }
680 if (var->min_vsize_align == 1 && !rotation)
681 align_h = fimc_fmt_is_rgb(ffmt->color) ? 0 : 1;
682
683 depth = fimc_get_format_depth(ffmt);
684 v4l_bound_align_image(width, min_w, max_w,
685 ffs(var->min_out_pixsize) - 1,
686 height, min_h, FIMC_CAMIF_MAX_HEIGHT,
687 align_h,
688 64/(ALIGN(depth, 8)));
689
690 dbg("pad%d: code: 0x%x, %dx%d. dst fmt: %dx%d",
691 pad, code ? *code : 0, *width, *height,
692 dst->f_width, dst->f_height);
693
694 return ffmt;
695 }
696
697 static void fimc_capture_try_selection(struct fimc_ctx *ctx,
698 struct v4l2_rect *r,
699 int target)
700 {
701 bool rotate = ctx->rotation == 90 || ctx->rotation == 270;
702 struct fimc_dev *fimc = ctx->fimc_dev;
703 struct fimc_variant *var = fimc->variant;
704 struct fimc_pix_limit *pl = var->pix_limit;
705 struct fimc_frame *sink = &ctx->s_frame;
706 u32 max_w, max_h, min_w = 0, min_h = 0, min_sz;
707 u32 align_sz = 0, align_h = 4;
708 u32 max_sc_h, max_sc_v;
709
710 /* In JPEG transparent transfer mode cropping is not supported */
711 if (fimc_fmt_is_user_defined(ctx->d_frame.fmt->color)) {
712 r->width = sink->f_width;
713 r->height = sink->f_height;
714 r->left = r->top = 0;
715 return;
716 }
717 if (target == V4L2_SEL_TGT_COMPOSE) {
718 if (ctx->rotation != 90 && ctx->rotation != 270)
719 align_h = 1;
720 max_sc_h = min(SCALER_MAX_HRATIO, 1 << (ffs(sink->width) - 3));
721 max_sc_v = min(SCALER_MAX_VRATIO, 1 << (ffs(sink->height) - 1));
722 min_sz = var->min_out_pixsize;
723 } else {
724 u32 depth = fimc_get_format_depth(sink->fmt);
725 align_sz = 64/ALIGN(depth, 8);
726 min_sz = var->min_inp_pixsize;
727 min_w = min_h = min_sz;
728 max_sc_h = max_sc_v = 1;
729 }
730 /*
731 * For the compose rectangle the following constraints must be met:
732 * - it must fit in the sink pad format rectangle (f_width/f_height);
733 * - maximum downscaling ratio is 64;
734 * - maximum crop size depends if the rotator is used or not;
735 * - the sink pad format width/height must be 4 multiple of the
736 * prescaler ratios determined by sink pad size and source pad crop,
737 * the prescaler ratio is returned by fimc_get_scaler_factor().
738 */
739 max_w = min_t(u32,
740 rotate ? pl->out_rot_en_w : pl->out_rot_dis_w,
741 rotate ? sink->f_height : sink->f_width);
742 max_h = min_t(u32, FIMC_CAMIF_MAX_HEIGHT, sink->f_height);
743
744 if (target == V4L2_SEL_TGT_COMPOSE) {
745 min_w = min_t(u32, max_w, sink->f_width / max_sc_h);
746 min_h = min_t(u32, max_h, sink->f_height / max_sc_v);
747 if (rotate) {
748 swap(max_sc_h, max_sc_v);
749 swap(min_w, min_h);
750 }
751 }
752 v4l_bound_align_image(&r->width, min_w, max_w, ffs(min_sz) - 1,
753 &r->height, min_h, max_h, align_h,
754 align_sz);
755 /* Adjust left/top if crop/compose rectangle is out of bounds */
756 r->left = clamp_t(u32, r->left, 0, sink->f_width - r->width);
757 r->top = clamp_t(u32, r->top, 0, sink->f_height - r->height);
758 r->left = round_down(r->left, var->hor_offs_align);
759
760 dbg("target %#x: (%d,%d)/%dx%d, sink fmt: %dx%d",
761 target, r->left, r->top, r->width, r->height,
762 sink->f_width, sink->f_height);
763 }
764
765 /*
766 * The video node ioctl operations
767 */
768 static int fimc_vidioc_querycap_capture(struct file *file, void *priv,
769 struct v4l2_capability *cap)
770 {
771 struct fimc_dev *fimc = video_drvdata(file);
772
773 strncpy(cap->driver, fimc->pdev->name, sizeof(cap->driver) - 1);
774 strncpy(cap->card, fimc->pdev->name, sizeof(cap->card) - 1);
775 cap->bus_info[0] = 0;
776 cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_CAPTURE_MPLANE;
777
778 return 0;
779 }
780
781 static int fimc_cap_enum_fmt_mplane(struct file *file, void *priv,
782 struct v4l2_fmtdesc *f)
783 {
784 struct fimc_fmt *fmt;
785
786 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM | FMT_FLAGS_M2M,
787 f->index);
788 if (!fmt)
789 return -EINVAL;
790 strncpy(f->description, fmt->name, sizeof(f->description) - 1);
791 f->pixelformat = fmt->fourcc;
792 if (fmt->fourcc == V4L2_MBUS_FMT_JPEG_1X8)
793 f->flags |= V4L2_FMT_FLAG_COMPRESSED;
794 return 0;
795 }
796
797 /**
798 * fimc_pipeline_try_format - negotiate and/or set formats at pipeline
799 * elements
800 * @ctx: FIMC capture context
801 * @tfmt: media bus format to try/set on subdevs
802 * @fmt_id: fimc pixel format id corresponding to returned @tfmt (output)
803 * @set: true to set format on subdevs, false to try only
804 */
805 static int fimc_pipeline_try_format(struct fimc_ctx *ctx,
806 struct v4l2_mbus_framefmt *tfmt,
807 struct fimc_fmt **fmt_id,
808 bool set)
809 {
810 struct fimc_dev *fimc = ctx->fimc_dev;
811 struct v4l2_subdev *sd = fimc->pipeline.subdevs[IDX_SENSOR];
812 struct v4l2_subdev *csis = fimc->pipeline.subdevs[IDX_CSIS];
813 struct v4l2_subdev_format sfmt;
814 struct v4l2_mbus_framefmt *mf = &sfmt.format;
815 struct fimc_fmt *ffmt = NULL;
816 int ret, i = 0;
817
818 if (WARN_ON(!sd || !tfmt))
819 return -EINVAL;
820
821 memset(&sfmt, 0, sizeof(sfmt));
822 sfmt.format = *tfmt;
823
824 sfmt.which = set ? V4L2_SUBDEV_FORMAT_ACTIVE : V4L2_SUBDEV_FORMAT_TRY;
825 while (1) {
826 ffmt = fimc_find_format(NULL, mf->code != 0 ? &mf->code : NULL,
827 FMT_FLAGS_CAM, i++);
828 if (ffmt == NULL) {
829 /*
830 * Notify user-space if common pixel code for
831 * host and sensor does not exist.
832 */
833 return -EINVAL;
834 }
835 mf->code = tfmt->code = ffmt->mbus_code;
836
837 ret = v4l2_subdev_call(sd, pad, set_fmt, NULL, &sfmt);
838 if (ret)
839 return ret;
840 if (mf->code != tfmt->code) {
841 mf->code = 0;
842 continue;
843 }
844 if (mf->width != tfmt->width || mf->height != tfmt->height) {
845 u32 fcc = ffmt->fourcc;
846 tfmt->width = mf->width;
847 tfmt->height = mf->height;
848 ffmt = fimc_capture_try_format(ctx,
849 &tfmt->width, &tfmt->height,
850 NULL, &fcc, FIMC_SD_PAD_SOURCE);
851 if (ffmt && ffmt->mbus_code)
852 mf->code = ffmt->mbus_code;
853 if (mf->width != tfmt->width ||
854 mf->height != tfmt->height)
855 continue;
856 tfmt->code = mf->code;
857 }
858 if (csis)
859 ret = v4l2_subdev_call(csis, pad, set_fmt, NULL, &sfmt);
860
861 if (mf->code == tfmt->code &&
862 mf->width == tfmt->width && mf->height == tfmt->height)
863 break;
864 }
865
866 if (fmt_id && ffmt)
867 *fmt_id = ffmt;
868 *tfmt = *mf;
869
870 dbg("code: 0x%x, %dx%d, %p", mf->code, mf->width, mf->height, ffmt);
871 return 0;
872 }
873
874 /**
875 * fimc_get_sensor_frame_desc - query the sensor for media bus frame parameters
876 * @sensor: pointer to the sensor subdev
877 * @plane_fmt: provides plane sizes corresponding to the frame layout entries
878 * @try: true to set the frame parameters, false to query only
879 *
880 * This function is used by this driver only for compressed/blob data formats.
881 */
882 static int fimc_get_sensor_frame_desc(struct v4l2_subdev *sensor,
883 struct v4l2_plane_pix_format *plane_fmt,
884 unsigned int num_planes, bool try)
885 {
886 struct v4l2_mbus_frame_desc fd;
887 int i, ret;
888
889 for (i = 0; i < num_planes; i++)
890 fd.entry[i].length = plane_fmt[i].sizeimage;
891
892 if (try)
893 ret = v4l2_subdev_call(sensor, pad, set_frame_desc, 0, &fd);
894 else
895 ret = v4l2_subdev_call(sensor, pad, get_frame_desc, 0, &fd);
896
897 if (ret < 0)
898 return ret;
899
900 if (num_planes != fd.num_entries)
901 return -EINVAL;
902
903 for (i = 0; i < num_planes; i++)
904 plane_fmt[i].sizeimage = fd.entry[i].length;
905
906 if (fd.entry[0].length > FIMC_MAX_JPEG_BUF_SIZE) {
907 v4l2_err(sensor->v4l2_dev, "Unsupported buffer size: %u\n",
908 fd.entry[0].length);
909
910 return -EINVAL;
911 }
912
913 return 0;
914 }
915
916 static int fimc_cap_g_fmt_mplane(struct file *file, void *fh,
917 struct v4l2_format *f)
918 {
919 struct fimc_dev *fimc = video_drvdata(file);
920 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
921
922 return fimc_fill_format(&ctx->d_frame, f);
923 }
924
925 static int fimc_cap_try_fmt_mplane(struct file *file, void *fh,
926 struct v4l2_format *f)
927 {
928 struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
929 struct fimc_dev *fimc = video_drvdata(file);
930 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
931 struct v4l2_mbus_framefmt mf;
932 struct fimc_fmt *ffmt = NULL;
933
934 if (fimc_jpeg_fourcc(pix->pixelformat)) {
935 fimc_capture_try_format(ctx, &pix->width, &pix->height,
936 NULL, &pix->pixelformat,
937 FIMC_SD_PAD_SINK);
938 ctx->s_frame.f_width = pix->width;
939 ctx->s_frame.f_height = pix->height;
940 }
941 ffmt = fimc_capture_try_format(ctx, &pix->width, &pix->height,
942 NULL, &pix->pixelformat,
943 FIMC_SD_PAD_SOURCE);
944 if (!ffmt)
945 return -EINVAL;
946
947 if (!fimc->vid_cap.user_subdev_api) {
948 mf.width = pix->width;
949 mf.height = pix->height;
950 mf.code = ffmt->mbus_code;
951 fimc_md_graph_lock(fimc);
952 fimc_pipeline_try_format(ctx, &mf, &ffmt, false);
953 fimc_md_graph_unlock(fimc);
954 pix->width = mf.width;
955 pix->height = mf.height;
956 if (ffmt)
957 pix->pixelformat = ffmt->fourcc;
958 }
959
960 fimc_adjust_mplane_format(ffmt, pix->width, pix->height, pix);
961
962 if (ffmt->flags & FMT_FLAGS_COMPRESSED)
963 fimc_get_sensor_frame_desc(fimc->pipeline.subdevs[IDX_SENSOR],
964 pix->plane_fmt, ffmt->memplanes, true);
965
966 return 0;
967 }
968
969 static void fimc_capture_mark_jpeg_xfer(struct fimc_ctx *ctx,
970 enum fimc_color_fmt color)
971 {
972 bool jpeg = fimc_fmt_is_user_defined(color);
973
974 ctx->scaler.enabled = !jpeg;
975 fimc_ctrls_activate(ctx, !jpeg);
976
977 if (jpeg)
978 set_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state);
979 else
980 clear_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state);
981 }
982
983 static int fimc_capture_set_format(struct fimc_dev *fimc, struct v4l2_format *f)
984 {
985 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
986 struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
987 struct v4l2_mbus_framefmt *mf = &fimc->vid_cap.mf;
988 struct fimc_frame *ff = &ctx->d_frame;
989 struct fimc_fmt *s_fmt = NULL;
990 int ret, i;
991
992 if (vb2_is_busy(&fimc->vid_cap.vbq))
993 return -EBUSY;
994
995 /* Pre-configure format at camera interface input, for JPEG only */
996 if (fimc_jpeg_fourcc(pix->pixelformat)) {
997 fimc_capture_try_format(ctx, &pix->width, &pix->height,
998 NULL, &pix->pixelformat,
999 FIMC_SD_PAD_SINK);
1000 ctx->s_frame.f_width = pix->width;
1001 ctx->s_frame.f_height = pix->height;
1002 }
1003 /* Try the format at the scaler and the DMA output */
1004 ff->fmt = fimc_capture_try_format(ctx, &pix->width, &pix->height,
1005 NULL, &pix->pixelformat,
1006 FIMC_SD_PAD_SOURCE);
1007 if (!ff->fmt)
1008 return -EINVAL;
1009
1010 /* Update RGB Alpha control state and value range */
1011 fimc_alpha_ctrl_update(ctx);
1012
1013 /* Try to match format at the host and the sensor */
1014 if (!fimc->vid_cap.user_subdev_api) {
1015 mf->code = ff->fmt->mbus_code;
1016 mf->width = pix->width;
1017 mf->height = pix->height;
1018
1019 fimc_md_graph_lock(fimc);
1020 ret = fimc_pipeline_try_format(ctx, mf, &s_fmt, true);
1021 fimc_md_graph_unlock(fimc);
1022 if (ret)
1023 return ret;
1024 pix->width = mf->width;
1025 pix->height = mf->height;
1026 }
1027
1028 fimc_adjust_mplane_format(ff->fmt, pix->width, pix->height, pix);
1029
1030 if (ff->fmt->flags & FMT_FLAGS_COMPRESSED) {
1031 ret = fimc_get_sensor_frame_desc(fimc->pipeline.subdevs[IDX_SENSOR],
1032 pix->plane_fmt, ff->fmt->memplanes,
1033 true);
1034 if (ret < 0)
1035 return ret;
1036 }
1037
1038 for (i = 0; i < ff->fmt->memplanes; i++)
1039 ff->payload[i] = pix->plane_fmt[i].sizeimage;
1040
1041 set_frame_bounds(ff, pix->width, pix->height);
1042 /* Reset the composition rectangle if not yet configured */
1043 if (!(ctx->state & FIMC_COMPOSE))
1044 set_frame_crop(ff, 0, 0, pix->width, pix->height);
1045
1046 fimc_capture_mark_jpeg_xfer(ctx, ff->fmt->color);
1047
1048 /* Reset cropping and set format at the camera interface input */
1049 if (!fimc->vid_cap.user_subdev_api) {
1050 ctx->s_frame.fmt = s_fmt;
1051 set_frame_bounds(&ctx->s_frame, pix->width, pix->height);
1052 set_frame_crop(&ctx->s_frame, 0, 0, pix->width, pix->height);
1053 }
1054
1055 return ret;
1056 }
1057
1058 static int fimc_cap_s_fmt_mplane(struct file *file, void *priv,
1059 struct v4l2_format *f)
1060 {
1061 struct fimc_dev *fimc = video_drvdata(file);
1062
1063 return fimc_capture_set_format(fimc, f);
1064 }
1065
1066 static int fimc_cap_enum_input(struct file *file, void *priv,
1067 struct v4l2_input *i)
1068 {
1069 struct fimc_dev *fimc = video_drvdata(file);
1070 struct v4l2_subdev *sd = fimc->pipeline.subdevs[IDX_SENSOR];
1071
1072 if (i->index != 0)
1073 return -EINVAL;
1074
1075 i->type = V4L2_INPUT_TYPE_CAMERA;
1076 if (sd)
1077 strlcpy(i->name, sd->name, sizeof(i->name));
1078 return 0;
1079 }
1080
1081 static int fimc_cap_s_input(struct file *file, void *priv, unsigned int i)
1082 {
1083 return i == 0 ? i : -EINVAL;
1084 }
1085
1086 static int fimc_cap_g_input(struct file *file, void *priv, unsigned int *i)
1087 {
1088 *i = 0;
1089 return 0;
1090 }
1091
1092 /**
1093 * fimc_pipeline_validate - check for formats inconsistencies
1094 * between source and sink pad of each link
1095 *
1096 * Return 0 if all formats match or -EPIPE otherwise.
1097 */
1098 static int fimc_pipeline_validate(struct fimc_dev *fimc)
1099 {
1100 struct v4l2_subdev_format sink_fmt, src_fmt;
1101 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
1102 struct v4l2_subdev *sd;
1103 struct media_pad *pad;
1104 int ret;
1105
1106 /* Start with the video capture node pad */
1107 pad = media_entity_remote_source(&vid_cap->vd_pad);
1108 if (pad == NULL)
1109 return -EPIPE;
1110 /* FIMC.{N} subdevice */
1111 sd = media_entity_to_v4l2_subdev(pad->entity);
1112
1113 while (1) {
1114 /* Retrieve format at the sink pad */
1115 pad = &sd->entity.pads[0];
1116 if (!(pad->flags & MEDIA_PAD_FL_SINK))
1117 break;
1118 /* Don't call FIMC subdev operation to avoid nested locking */
1119 if (sd == &fimc->vid_cap.subdev) {
1120 struct fimc_frame *ff = &vid_cap->ctx->s_frame;
1121 sink_fmt.format.width = ff->f_width;
1122 sink_fmt.format.height = ff->f_height;
1123 sink_fmt.format.code = ff->fmt ? ff->fmt->mbus_code : 0;
1124 } else {
1125 sink_fmt.pad = pad->index;
1126 sink_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
1127 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &sink_fmt);
1128 if (ret < 0 && ret != -ENOIOCTLCMD)
1129 return -EPIPE;
1130 }
1131 /* Retrieve format at the source pad */
1132 pad = media_entity_remote_source(pad);
1133 if (pad == NULL ||
1134 media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
1135 break;
1136
1137 sd = media_entity_to_v4l2_subdev(pad->entity);
1138 src_fmt.pad = pad->index;
1139 src_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
1140 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &src_fmt);
1141 if (ret < 0 && ret != -ENOIOCTLCMD)
1142 return -EPIPE;
1143
1144 if (src_fmt.format.width != sink_fmt.format.width ||
1145 src_fmt.format.height != sink_fmt.format.height ||
1146 src_fmt.format.code != sink_fmt.format.code)
1147 return -EPIPE;
1148
1149 if (sd == fimc->pipeline.subdevs[IDX_SENSOR] &&
1150 fimc_user_defined_mbus_fmt(src_fmt.format.code)) {
1151 struct v4l2_plane_pix_format plane_fmt[FIMC_MAX_PLANES];
1152 struct fimc_frame *frame = &vid_cap->ctx->d_frame;
1153 unsigned int i;
1154
1155 ret = fimc_get_sensor_frame_desc(sd, plane_fmt,
1156 frame->fmt->memplanes,
1157 false);
1158 if (ret < 0)
1159 return -EPIPE;
1160
1161 for (i = 0; i < frame->fmt->memplanes; i++)
1162 if (frame->payload[i] < plane_fmt[i].sizeimage)
1163 return -EPIPE;
1164 }
1165 }
1166 return 0;
1167 }
1168
1169 static int fimc_cap_streamon(struct file *file, void *priv,
1170 enum v4l2_buf_type type)
1171 {
1172 struct fimc_dev *fimc = video_drvdata(file);
1173 struct fimc_pipeline *p = &fimc->pipeline;
1174 struct v4l2_subdev *sd = p->subdevs[IDX_SENSOR];
1175 int ret;
1176
1177 if (fimc_capture_active(fimc))
1178 return -EBUSY;
1179
1180 ret = media_entity_pipeline_start(&sd->entity, p->m_pipeline);
1181 if (ret < 0)
1182 return ret;
1183
1184 if (fimc->vid_cap.user_subdev_api) {
1185 ret = fimc_pipeline_validate(fimc);
1186 if (ret < 0) {
1187 media_entity_pipeline_stop(&sd->entity);
1188 return ret;
1189 }
1190 }
1191 return vb2_streamon(&fimc->vid_cap.vbq, type);
1192 }
1193
1194 static int fimc_cap_streamoff(struct file *file, void *priv,
1195 enum v4l2_buf_type type)
1196 {
1197 struct fimc_dev *fimc = video_drvdata(file);
1198 struct v4l2_subdev *sd = fimc->pipeline.subdevs[IDX_SENSOR];
1199 int ret;
1200
1201 ret = vb2_streamoff(&fimc->vid_cap.vbq, type);
1202 if (ret == 0)
1203 media_entity_pipeline_stop(&sd->entity);
1204 return ret;
1205 }
1206
1207 static int fimc_cap_reqbufs(struct file *file, void *priv,
1208 struct v4l2_requestbuffers *reqbufs)
1209 {
1210 struct fimc_dev *fimc = video_drvdata(file);
1211 int ret = vb2_reqbufs(&fimc->vid_cap.vbq, reqbufs);
1212
1213 if (!ret)
1214 fimc->vid_cap.reqbufs_count = reqbufs->count;
1215 return ret;
1216 }
1217
1218 static int fimc_cap_querybuf(struct file *file, void *priv,
1219 struct v4l2_buffer *buf)
1220 {
1221 struct fimc_dev *fimc = video_drvdata(file);
1222
1223 return vb2_querybuf(&fimc->vid_cap.vbq, buf);
1224 }
1225
1226 static int fimc_cap_qbuf(struct file *file, void *priv,
1227 struct v4l2_buffer *buf)
1228 {
1229 struct fimc_dev *fimc = video_drvdata(file);
1230
1231 return vb2_qbuf(&fimc->vid_cap.vbq, buf);
1232 }
1233
1234 static int fimc_cap_dqbuf(struct file *file, void *priv,
1235 struct v4l2_buffer *buf)
1236 {
1237 struct fimc_dev *fimc = video_drvdata(file);
1238
1239 return vb2_dqbuf(&fimc->vid_cap.vbq, buf, file->f_flags & O_NONBLOCK);
1240 }
1241
1242 static int fimc_cap_create_bufs(struct file *file, void *priv,
1243 struct v4l2_create_buffers *create)
1244 {
1245 struct fimc_dev *fimc = video_drvdata(file);
1246
1247 return vb2_create_bufs(&fimc->vid_cap.vbq, create);
1248 }
1249
1250 static int fimc_cap_prepare_buf(struct file *file, void *priv,
1251 struct v4l2_buffer *b)
1252 {
1253 struct fimc_dev *fimc = video_drvdata(file);
1254
1255 return vb2_prepare_buf(&fimc->vid_cap.vbq, b);
1256 }
1257
1258 static int fimc_cap_g_selection(struct file *file, void *fh,
1259 struct v4l2_selection *s)
1260 {
1261 struct fimc_dev *fimc = video_drvdata(file);
1262 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1263 struct fimc_frame *f = &ctx->s_frame;
1264
1265 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1266 return -EINVAL;
1267
1268 switch (s->target) {
1269 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
1270 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1271 f = &ctx->d_frame;
1272 case V4L2_SEL_TGT_CROP_BOUNDS:
1273 case V4L2_SEL_TGT_CROP_DEFAULT:
1274 s->r.left = 0;
1275 s->r.top = 0;
1276 s->r.width = f->o_width;
1277 s->r.height = f->o_height;
1278 return 0;
1279
1280 case V4L2_SEL_TGT_COMPOSE:
1281 f = &ctx->d_frame;
1282 case V4L2_SEL_TGT_CROP:
1283 s->r.left = f->offs_h;
1284 s->r.top = f->offs_v;
1285 s->r.width = f->width;
1286 s->r.height = f->height;
1287 return 0;
1288 }
1289
1290 return -EINVAL;
1291 }
1292
1293 /* Return 1 if rectangle a is enclosed in rectangle b, or 0 otherwise. */
1294 static int enclosed_rectangle(struct v4l2_rect *a, struct v4l2_rect *b)
1295 {
1296 if (a->left < b->left || a->top < b->top)
1297 return 0;
1298 if (a->left + a->width > b->left + b->width)
1299 return 0;
1300 if (a->top + a->height > b->top + b->height)
1301 return 0;
1302
1303 return 1;
1304 }
1305
1306 static int fimc_cap_s_selection(struct file *file, void *fh,
1307 struct v4l2_selection *s)
1308 {
1309 struct fimc_dev *fimc = video_drvdata(file);
1310 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1311 struct v4l2_rect rect = s->r;
1312 struct fimc_frame *f;
1313 unsigned long flags;
1314
1315 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1316 return -EINVAL;
1317
1318 if (s->target == V4L2_SEL_TGT_COMPOSE)
1319 f = &ctx->d_frame;
1320 else if (s->target == V4L2_SEL_TGT_CROP)
1321 f = &ctx->s_frame;
1322 else
1323 return -EINVAL;
1324
1325 fimc_capture_try_selection(ctx, &rect, s->target);
1326
1327 if (s->flags & V4L2_SEL_FLAG_LE &&
1328 !enclosed_rectangle(&rect, &s->r))
1329 return -ERANGE;
1330
1331 if (s->flags & V4L2_SEL_FLAG_GE &&
1332 !enclosed_rectangle(&s->r, &rect))
1333 return -ERANGE;
1334
1335 s->r = rect;
1336 spin_lock_irqsave(&fimc->slock, flags);
1337 set_frame_crop(f, s->r.left, s->r.top, s->r.width,
1338 s->r.height);
1339 spin_unlock_irqrestore(&fimc->slock, flags);
1340
1341 set_bit(ST_CAPT_APPLY_CFG, &fimc->state);
1342 return 0;
1343 }
1344
1345 static const struct v4l2_ioctl_ops fimc_capture_ioctl_ops = {
1346 .vidioc_querycap = fimc_vidioc_querycap_capture,
1347
1348 .vidioc_enum_fmt_vid_cap_mplane = fimc_cap_enum_fmt_mplane,
1349 .vidioc_try_fmt_vid_cap_mplane = fimc_cap_try_fmt_mplane,
1350 .vidioc_s_fmt_vid_cap_mplane = fimc_cap_s_fmt_mplane,
1351 .vidioc_g_fmt_vid_cap_mplane = fimc_cap_g_fmt_mplane,
1352
1353 .vidioc_reqbufs = fimc_cap_reqbufs,
1354 .vidioc_querybuf = fimc_cap_querybuf,
1355
1356 .vidioc_qbuf = fimc_cap_qbuf,
1357 .vidioc_dqbuf = fimc_cap_dqbuf,
1358
1359 .vidioc_prepare_buf = fimc_cap_prepare_buf,
1360 .vidioc_create_bufs = fimc_cap_create_bufs,
1361
1362 .vidioc_streamon = fimc_cap_streamon,
1363 .vidioc_streamoff = fimc_cap_streamoff,
1364
1365 .vidioc_g_selection = fimc_cap_g_selection,
1366 .vidioc_s_selection = fimc_cap_s_selection,
1367
1368 .vidioc_enum_input = fimc_cap_enum_input,
1369 .vidioc_s_input = fimc_cap_s_input,
1370 .vidioc_g_input = fimc_cap_g_input,
1371 };
1372
1373 /* Capture subdev media entity operations */
1374 static int fimc_link_setup(struct media_entity *entity,
1375 const struct media_pad *local,
1376 const struct media_pad *remote, u32 flags)
1377 {
1378 struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
1379 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1380
1381 if (media_entity_type(remote->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
1382 return -EINVAL;
1383
1384 if (WARN_ON(fimc == NULL))
1385 return 0;
1386
1387 dbg("%s --> %s, flags: 0x%x. input: 0x%x",
1388 local->entity->name, remote->entity->name, flags,
1389 fimc->vid_cap.input);
1390
1391 if (flags & MEDIA_LNK_FL_ENABLED) {
1392 if (fimc->vid_cap.input != 0)
1393 return -EBUSY;
1394 fimc->vid_cap.input = sd->grp_id;
1395 return 0;
1396 }
1397
1398 fimc->vid_cap.input = 0;
1399 return 0;
1400 }
1401
1402 static const struct media_entity_operations fimc_sd_media_ops = {
1403 .link_setup = fimc_link_setup,
1404 };
1405
1406 /**
1407 * fimc_sensor_notify - v4l2_device notification from a sensor subdev
1408 * @sd: pointer to a subdev generating the notification
1409 * @notification: the notification type, must be S5P_FIMC_TX_END_NOTIFY
1410 * @arg: pointer to an u32 type integer that stores the frame payload value
1411 *
1412 * The End Of Frame notification sent by sensor subdev in its still capture
1413 * mode. If there is only a single VSYNC generated by the sensor at the
1414 * beginning of a frame transmission, FIMC does not issue the LastIrq
1415 * (end of frame) interrupt. And this notification is used to complete the
1416 * frame capture and returning a buffer to user-space. Subdev drivers should
1417 * call this notification from their last 'End of frame capture' interrupt.
1418 */
1419 void fimc_sensor_notify(struct v4l2_subdev *sd, unsigned int notification,
1420 void *arg)
1421 {
1422 struct fimc_sensor_info *sensor;
1423 struct fimc_vid_buffer *buf;
1424 struct fimc_md *fmd;
1425 struct fimc_dev *fimc;
1426 unsigned long flags;
1427
1428 if (sd == NULL)
1429 return;
1430
1431 sensor = v4l2_get_subdev_hostdata(sd);
1432 fmd = entity_to_fimc_mdev(&sd->entity);
1433
1434 spin_lock_irqsave(&fmd->slock, flags);
1435 fimc = sensor ? sensor->host : NULL;
1436
1437 if (fimc && arg && notification == S5P_FIMC_TX_END_NOTIFY &&
1438 test_bit(ST_CAPT_PEND, &fimc->state)) {
1439 unsigned long irq_flags;
1440 spin_lock_irqsave(&fimc->slock, irq_flags);
1441 if (!list_empty(&fimc->vid_cap.active_buf_q)) {
1442 buf = list_entry(fimc->vid_cap.active_buf_q.next,
1443 struct fimc_vid_buffer, list);
1444 vb2_set_plane_payload(&buf->vb, 0, *((u32 *)arg));
1445 }
1446 fimc_capture_irq_handler(fimc, 1);
1447 fimc_deactivate_capture(fimc);
1448 spin_unlock_irqrestore(&fimc->slock, irq_flags);
1449 }
1450 spin_unlock_irqrestore(&fmd->slock, flags);
1451 }
1452
1453 static int fimc_subdev_enum_mbus_code(struct v4l2_subdev *sd,
1454 struct v4l2_subdev_fh *fh,
1455 struct v4l2_subdev_mbus_code_enum *code)
1456 {
1457 struct fimc_fmt *fmt;
1458
1459 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, code->index);
1460 if (!fmt)
1461 return -EINVAL;
1462 code->code = fmt->mbus_code;
1463 return 0;
1464 }
1465
1466 static int fimc_subdev_get_fmt(struct v4l2_subdev *sd,
1467 struct v4l2_subdev_fh *fh,
1468 struct v4l2_subdev_format *fmt)
1469 {
1470 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1471 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1472 struct v4l2_mbus_framefmt *mf;
1473 struct fimc_frame *ff;
1474
1475 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1476 mf = v4l2_subdev_get_try_format(fh, fmt->pad);
1477 fmt->format = *mf;
1478 return 0;
1479 }
1480 mf = &fmt->format;
1481 mf->colorspace = V4L2_COLORSPACE_JPEG;
1482 ff = fmt->pad == FIMC_SD_PAD_SINK ? &ctx->s_frame : &ctx->d_frame;
1483
1484 mutex_lock(&fimc->lock);
1485 /* The pixel code is same on both input and output pad */
1486 if (!WARN_ON(ctx->s_frame.fmt == NULL))
1487 mf->code = ctx->s_frame.fmt->mbus_code;
1488 mf->width = ff->f_width;
1489 mf->height = ff->f_height;
1490 mutex_unlock(&fimc->lock);
1491
1492 return 0;
1493 }
1494
1495 static int fimc_subdev_set_fmt(struct v4l2_subdev *sd,
1496 struct v4l2_subdev_fh *fh,
1497 struct v4l2_subdev_format *fmt)
1498 {
1499 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1500 struct v4l2_mbus_framefmt *mf = &fmt->format;
1501 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1502 struct fimc_frame *ff;
1503 struct fimc_fmt *ffmt;
1504
1505 dbg("pad%d: code: 0x%x, %dx%d",
1506 fmt->pad, mf->code, mf->width, mf->height);
1507
1508 if (fmt->pad == FIMC_SD_PAD_SOURCE &&
1509 vb2_is_busy(&fimc->vid_cap.vbq))
1510 return -EBUSY;
1511
1512 mutex_lock(&fimc->lock);
1513 ffmt = fimc_capture_try_format(ctx, &mf->width, &mf->height,
1514 &mf->code, NULL, fmt->pad);
1515 mutex_unlock(&fimc->lock);
1516 mf->colorspace = V4L2_COLORSPACE_JPEG;
1517
1518 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1519 mf = v4l2_subdev_get_try_format(fh, fmt->pad);
1520 *mf = fmt->format;
1521 return 0;
1522 }
1523 /* Update RGB Alpha control state and value range */
1524 fimc_alpha_ctrl_update(ctx);
1525
1526 fimc_capture_mark_jpeg_xfer(ctx, ffmt->color);
1527
1528 ff = fmt->pad == FIMC_SD_PAD_SINK ?
1529 &ctx->s_frame : &ctx->d_frame;
1530
1531 mutex_lock(&fimc->lock);
1532 set_frame_bounds(ff, mf->width, mf->height);
1533 fimc->vid_cap.mf = *mf;
1534 ff->fmt = ffmt;
1535
1536 /* Reset the crop rectangle if required. */
1537 if (!(fmt->pad == FIMC_SD_PAD_SOURCE && (ctx->state & FIMC_COMPOSE)))
1538 set_frame_crop(ff, 0, 0, mf->width, mf->height);
1539
1540 if (fmt->pad == FIMC_SD_PAD_SINK)
1541 ctx->state &= ~FIMC_COMPOSE;
1542 mutex_unlock(&fimc->lock);
1543 return 0;
1544 }
1545
1546 static int fimc_subdev_get_selection(struct v4l2_subdev *sd,
1547 struct v4l2_subdev_fh *fh,
1548 struct v4l2_subdev_selection *sel)
1549 {
1550 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1551 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1552 struct fimc_frame *f = &ctx->s_frame;
1553 struct v4l2_rect *r = &sel->r;
1554 struct v4l2_rect *try_sel;
1555
1556 if (sel->pad != FIMC_SD_PAD_SINK)
1557 return -EINVAL;
1558
1559 mutex_lock(&fimc->lock);
1560
1561 switch (sel->target) {
1562 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1563 f = &ctx->d_frame;
1564 case V4L2_SEL_TGT_CROP_BOUNDS:
1565 r->width = f->o_width;
1566 r->height = f->o_height;
1567 r->left = 0;
1568 r->top = 0;
1569 mutex_unlock(&fimc->lock);
1570 return 0;
1571
1572 case V4L2_SEL_TGT_CROP:
1573 try_sel = v4l2_subdev_get_try_crop(fh, sel->pad);
1574 break;
1575 case V4L2_SEL_TGT_COMPOSE:
1576 try_sel = v4l2_subdev_get_try_compose(fh, sel->pad);
1577 f = &ctx->d_frame;
1578 break;
1579 default:
1580 mutex_unlock(&fimc->lock);
1581 return -EINVAL;
1582 }
1583
1584 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1585 sel->r = *try_sel;
1586 } else {
1587 r->left = f->offs_h;
1588 r->top = f->offs_v;
1589 r->width = f->width;
1590 r->height = f->height;
1591 }
1592
1593 dbg("target %#x: l:%d, t:%d, %dx%d, f_w: %d, f_h: %d",
1594 sel->pad, r->left, r->top, r->width, r->height,
1595 f->f_width, f->f_height);
1596
1597 mutex_unlock(&fimc->lock);
1598 return 0;
1599 }
1600
1601 static int fimc_subdev_set_selection(struct v4l2_subdev *sd,
1602 struct v4l2_subdev_fh *fh,
1603 struct v4l2_subdev_selection *sel)
1604 {
1605 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1606 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1607 struct fimc_frame *f = &ctx->s_frame;
1608 struct v4l2_rect *r = &sel->r;
1609 struct v4l2_rect *try_sel;
1610 unsigned long flags;
1611
1612 if (sel->pad != FIMC_SD_PAD_SINK)
1613 return -EINVAL;
1614
1615 mutex_lock(&fimc->lock);
1616 fimc_capture_try_selection(ctx, r, V4L2_SEL_TGT_CROP);
1617
1618 switch (sel->target) {
1619 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1620 f = &ctx->d_frame;
1621 case V4L2_SEL_TGT_CROP_BOUNDS:
1622 r->width = f->o_width;
1623 r->height = f->o_height;
1624 r->left = 0;
1625 r->top = 0;
1626 mutex_unlock(&fimc->lock);
1627 return 0;
1628
1629 case V4L2_SEL_TGT_CROP:
1630 try_sel = v4l2_subdev_get_try_crop(fh, sel->pad);
1631 break;
1632 case V4L2_SEL_TGT_COMPOSE:
1633 try_sel = v4l2_subdev_get_try_compose(fh, sel->pad);
1634 f = &ctx->d_frame;
1635 break;
1636 default:
1637 mutex_unlock(&fimc->lock);
1638 return -EINVAL;
1639 }
1640
1641 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1642 *try_sel = sel->r;
1643 } else {
1644 spin_lock_irqsave(&fimc->slock, flags);
1645 set_frame_crop(f, r->left, r->top, r->width, r->height);
1646 set_bit(ST_CAPT_APPLY_CFG, &fimc->state);
1647 spin_unlock_irqrestore(&fimc->slock, flags);
1648 if (sel->target == V4L2_SEL_TGT_COMPOSE)
1649 ctx->state |= FIMC_COMPOSE;
1650 }
1651
1652 dbg("target %#x: (%d,%d)/%dx%d", sel->target, r->left, r->top,
1653 r->width, r->height);
1654
1655 mutex_unlock(&fimc->lock);
1656 return 0;
1657 }
1658
1659 static struct v4l2_subdev_pad_ops fimc_subdev_pad_ops = {
1660 .enum_mbus_code = fimc_subdev_enum_mbus_code,
1661 .get_selection = fimc_subdev_get_selection,
1662 .set_selection = fimc_subdev_set_selection,
1663 .get_fmt = fimc_subdev_get_fmt,
1664 .set_fmt = fimc_subdev_set_fmt,
1665 };
1666
1667 static struct v4l2_subdev_ops fimc_subdev_ops = {
1668 .pad = &fimc_subdev_pad_ops,
1669 };
1670
1671 /* Set default format at the sensor and host interface */
1672 static int fimc_capture_set_default_format(struct fimc_dev *fimc)
1673 {
1674 struct v4l2_format fmt = {
1675 .type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
1676 .fmt.pix_mp = {
1677 .width = 640,
1678 .height = 480,
1679 .pixelformat = V4L2_PIX_FMT_YUYV,
1680 .field = V4L2_FIELD_NONE,
1681 .colorspace = V4L2_COLORSPACE_JPEG,
1682 },
1683 };
1684
1685 return fimc_capture_set_format(fimc, &fmt);
1686 }
1687
1688 /* fimc->lock must be already initialized */
1689 static int fimc_register_capture_device(struct fimc_dev *fimc,
1690 struct v4l2_device *v4l2_dev)
1691 {
1692 struct video_device *vfd = &fimc->vid_cap.vfd;
1693 struct fimc_vid_cap *vid_cap;
1694 struct fimc_ctx *ctx;
1695 struct vb2_queue *q;
1696 int ret = -ENOMEM;
1697
1698 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
1699 if (!ctx)
1700 return -ENOMEM;
1701
1702 ctx->fimc_dev = fimc;
1703 ctx->in_path = FIMC_IO_CAMERA;
1704 ctx->out_path = FIMC_IO_DMA;
1705 ctx->state = FIMC_CTX_CAP;
1706 ctx->s_frame.fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, 0);
1707 ctx->d_frame.fmt = ctx->s_frame.fmt;
1708
1709 memset(vfd, 0, sizeof(*vfd));
1710 snprintf(vfd->name, sizeof(vfd->name), "fimc.%d.capture", fimc->id);
1711
1712 vfd->fops = &fimc_capture_fops;
1713 vfd->ioctl_ops = &fimc_capture_ioctl_ops;
1714 vfd->v4l2_dev = v4l2_dev;
1715 vfd->minor = -1;
1716 vfd->release = video_device_release_empty;
1717 vfd->lock = &fimc->lock;
1718
1719 video_set_drvdata(vfd, fimc);
1720
1721 vid_cap = &fimc->vid_cap;
1722 vid_cap->active_buf_cnt = 0;
1723 vid_cap->reqbufs_count = 0;
1724 vid_cap->refcnt = 0;
1725
1726 INIT_LIST_HEAD(&vid_cap->pending_buf_q);
1727 INIT_LIST_HEAD(&vid_cap->active_buf_q);
1728 vid_cap->ctx = ctx;
1729
1730 q = &fimc->vid_cap.vbq;
1731 memset(q, 0, sizeof(*q));
1732 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1733 q->io_modes = VB2_MMAP | VB2_USERPTR;
1734 q->drv_priv = fimc->vid_cap.ctx;
1735 q->ops = &fimc_capture_qops;
1736 q->mem_ops = &vb2_dma_contig_memops;
1737 q->buf_struct_size = sizeof(struct fimc_vid_buffer);
1738
1739 vb2_queue_init(q);
1740
1741 vid_cap->vd_pad.flags = MEDIA_PAD_FL_SINK;
1742 ret = media_entity_init(&vfd->entity, 1, &vid_cap->vd_pad, 0);
1743 if (ret)
1744 goto err_ent;
1745
1746 ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1);
1747 if (ret)
1748 goto err_vd;
1749
1750 v4l2_info(v4l2_dev, "Registered %s as /dev/%s\n",
1751 vfd->name, video_device_node_name(vfd));
1752
1753 vfd->ctrl_handler = &ctx->ctrls.handler;
1754 return 0;
1755
1756 err_vd:
1757 media_entity_cleanup(&vfd->entity);
1758 err_ent:
1759 kfree(ctx);
1760 return ret;
1761 }
1762
1763 static int fimc_capture_subdev_registered(struct v4l2_subdev *sd)
1764 {
1765 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1766 int ret;
1767
1768 if (fimc == NULL)
1769 return -ENXIO;
1770
1771 ret = fimc_register_m2m_device(fimc, sd->v4l2_dev);
1772 if (ret)
1773 return ret;
1774
1775 ret = fimc_register_capture_device(fimc, sd->v4l2_dev);
1776 if (ret)
1777 fimc_unregister_m2m_device(fimc);
1778
1779 return ret;
1780 }
1781
1782 static void fimc_capture_subdev_unregistered(struct v4l2_subdev *sd)
1783 {
1784 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1785
1786 if (fimc == NULL)
1787 return;
1788
1789 fimc_unregister_m2m_device(fimc);
1790
1791 if (video_is_registered(&fimc->vid_cap.vfd)) {
1792 video_unregister_device(&fimc->vid_cap.vfd);
1793 media_entity_cleanup(&fimc->vid_cap.vfd.entity);
1794 }
1795 kfree(fimc->vid_cap.ctx);
1796 fimc->vid_cap.ctx = NULL;
1797 }
1798
1799 static const struct v4l2_subdev_internal_ops fimc_capture_sd_internal_ops = {
1800 .registered = fimc_capture_subdev_registered,
1801 .unregistered = fimc_capture_subdev_unregistered,
1802 };
1803
1804 int fimc_initialize_capture_subdev(struct fimc_dev *fimc)
1805 {
1806 struct v4l2_subdev *sd = &fimc->vid_cap.subdev;
1807 int ret;
1808
1809 v4l2_subdev_init(sd, &fimc_subdev_ops);
1810 sd->flags = V4L2_SUBDEV_FL_HAS_DEVNODE;
1811 snprintf(sd->name, sizeof(sd->name), "FIMC.%d", fimc->pdev->id);
1812
1813 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
1814 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
1815 ret = media_entity_init(&sd->entity, FIMC_SD_PADS_NUM,
1816 fimc->vid_cap.sd_pads, 0);
1817 if (ret)
1818 return ret;
1819
1820 sd->entity.ops = &fimc_sd_media_ops;
1821 sd->internal_ops = &fimc_capture_sd_internal_ops;
1822 v4l2_set_subdevdata(sd, fimc);
1823 return 0;
1824 }
1825
1826 void fimc_unregister_capture_subdev(struct fimc_dev *fimc)
1827 {
1828 struct v4l2_subdev *sd = &fimc->vid_cap.subdev;
1829
1830 v4l2_device_unregister_subdev(sd);
1831 media_entity_cleanup(&sd->entity);
1832 v4l2_set_subdevdata(sd, NULL);
1833 }
Linux kernel - Deliverables
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