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gpio: rcar: Fix runtime PM imbalance on error
[linux/fpc-iii.git] / drivers / media / platform / exynos4-is / fimc-capture.c
blob705f182330ca4637cb383bc7b9ff618f8776c4a7
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Samsung S5P/EXYNOS4 SoC series camera interface (camera capture) driver
4 *
5 * Copyright (C) 2010 - 2012 Samsung Electronics Co., Ltd.
6 * Sylwester Nawrocki <s.nawrocki@samsung.com>
7 */
8
9 #include <linux/module.h>
10 #include <linux/kernel.h>
11 #include <linux/types.h>
12 #include <linux/errno.h>
13 #include <linux/bug.h>
14 #include <linux/interrupt.h>
15 #include <linux/device.h>
16 #include <linux/pm_runtime.h>
17 #include <linux/list.h>
18 #include <linux/slab.h>
19
20 #include <linux/videodev2.h>
21 #include <media/v4l2-device.h>
22 #include <media/v4l2-ioctl.h>
23 #include <media/v4l2-mem2mem.h>
24 #include <media/videobuf2-v4l2.h>
25 #include <media/videobuf2-dma-contig.h>
26
27 #include "common.h"
28 #include "fimc-core.h"
29 #include "fimc-reg.h"
30 #include "media-dev.h"
31
32 static int fimc_capture_hw_init(struct fimc_dev *fimc)
33 {
34 struct fimc_source_info *si = &fimc->vid_cap.source_config;
35 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
36 int ret;
37 unsigned long flags;
38
39 if (ctx == NULL || ctx->s_frame.fmt == NULL)
40 return -EINVAL;
41
42 if (si->fimc_bus_type == FIMC_BUS_TYPE_ISP_WRITEBACK) {
43 ret = fimc_hw_camblk_cfg_writeback(fimc);
44 if (ret < 0)
45 return ret;
46 }
47
48 spin_lock_irqsave(&fimc->slock, flags);
49 fimc_prepare_dma_offset(ctx, &ctx->d_frame);
50 fimc_set_yuv_order(ctx);
51
52 fimc_hw_set_camera_polarity(fimc, si);
53 fimc_hw_set_camera_type(fimc, si);
54 fimc_hw_set_camera_source(fimc, si);
55 fimc_hw_set_camera_offset(fimc, &ctx->s_frame);
56
57 ret = fimc_set_scaler_info(ctx);
58 if (!ret) {
59 fimc_hw_set_input_path(ctx);
60 fimc_hw_set_prescaler(ctx);
61 fimc_hw_set_mainscaler(ctx);
62 fimc_hw_set_target_format(ctx);
63 fimc_hw_set_rotation(ctx);
64 fimc_hw_set_effect(ctx);
65 fimc_hw_set_output_path(ctx);
66 fimc_hw_set_out_dma(ctx);
67 if (fimc->drv_data->alpha_color)
68 fimc_hw_set_rgb_alpha(ctx);
69 clear_bit(ST_CAPT_APPLY_CFG, &fimc->state);
70 }
71 spin_unlock_irqrestore(&fimc->slock, flags);
72 return ret;
73 }
74
75 /*
76 * Reinitialize the driver so it is ready to start the streaming again.
77 * Set fimc->state to indicate stream off and the hardware shut down state.
78 * If not suspending (@suspend is false), return any buffers to videobuf2.
79 * Otherwise put any owned buffers onto the pending buffers queue, so they
80 * can be re-spun when the device is being resumed. Also perform FIMC
81 * software reset and disable streaming on the whole pipeline if required.
82 */
83 static int fimc_capture_state_cleanup(struct fimc_dev *fimc, bool suspend)
84 {
85 struct fimc_vid_cap *cap = &fimc->vid_cap;
86 struct fimc_vid_buffer *buf;
87 unsigned long flags;
88 bool streaming;
89
90 spin_lock_irqsave(&fimc->slock, flags);
91 streaming = fimc->state & (1 << ST_CAPT_ISP_STREAM);
92
93 fimc->state &= ~(1 << ST_CAPT_RUN | 1 << ST_CAPT_SHUT |
94 1 << ST_CAPT_STREAM | 1 << ST_CAPT_ISP_STREAM);
95 if (suspend)
96 fimc->state |= (1 << ST_CAPT_SUSPENDED);
97 else
98 fimc->state &= ~(1 << ST_CAPT_PEND | 1 << ST_CAPT_SUSPENDED);
99
100 /* Release unused buffers */
101 while (!suspend && !list_empty(&cap->pending_buf_q)) {
102 buf = fimc_pending_queue_pop(cap);
103 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
104 }
105 /* If suspending put unused buffers onto pending queue */
106 while (!list_empty(&cap->active_buf_q)) {
107 buf = fimc_active_queue_pop(cap);
108 if (suspend)
109 fimc_pending_queue_add(cap, buf);
110 else
111 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
112 }
113
114 fimc_hw_reset(fimc);
115 cap->buf_index = 0;
116
117 spin_unlock_irqrestore(&fimc->slock, flags);
118
119 if (streaming)
120 return fimc_pipeline_call(&cap->ve, set_stream, 0);
121 else
122 return 0;
123 }
124
125 static int fimc_stop_capture(struct fimc_dev *fimc, bool suspend)
126 {
127 unsigned long flags;
128
129 if (!fimc_capture_active(fimc))
130 return 0;
131
132 spin_lock_irqsave(&fimc->slock, flags);
133 set_bit(ST_CAPT_SHUT, &fimc->state);
134 fimc_deactivate_capture(fimc);
135 spin_unlock_irqrestore(&fimc->slock, flags);
136
137 wait_event_timeout(fimc->irq_queue,
138 !test_bit(ST_CAPT_SHUT, &fimc->state),
139 (2*HZ/10)); /* 200 ms */
140
141 return fimc_capture_state_cleanup(fimc, suspend);
142 }
143
144 /**
145 * fimc_capture_config_update - apply the camera interface configuration
146 * @ctx: FIMC capture context
147 *
148 * To be called from within the interrupt handler with fimc.slock
149 * spinlock held. It updates the camera pixel crop, rotation and
150 * image flip in H/W.
151 */
152 static int fimc_capture_config_update(struct fimc_ctx *ctx)
153 {
154 struct fimc_dev *fimc = ctx->fimc_dev;
155 int ret;
156
157 fimc_hw_set_camera_offset(fimc, &ctx->s_frame);
158
159 ret = fimc_set_scaler_info(ctx);
160 if (ret)
161 return ret;
162
163 fimc_hw_set_prescaler(ctx);
164 fimc_hw_set_mainscaler(ctx);
165 fimc_hw_set_target_format(ctx);
166 fimc_hw_set_rotation(ctx);
167 fimc_hw_set_effect(ctx);
168 fimc_prepare_dma_offset(ctx, &ctx->d_frame);
169 fimc_hw_set_out_dma(ctx);
170 if (fimc->drv_data->alpha_color)
171 fimc_hw_set_rgb_alpha(ctx);
172
173 clear_bit(ST_CAPT_APPLY_CFG, &fimc->state);
174 return ret;
175 }
176
177 void fimc_capture_irq_handler(struct fimc_dev *fimc, int deq_buf)
178 {
179 struct fimc_vid_cap *cap = &fimc->vid_cap;
180 struct fimc_pipeline *p = to_fimc_pipeline(cap->ve.pipe);
181 struct v4l2_subdev *csis = p->subdevs[IDX_CSIS];
182 struct fimc_frame *f = &cap->ctx->d_frame;
183 struct fimc_vid_buffer *v_buf;
184
185 if (test_and_clear_bit(ST_CAPT_SHUT, &fimc->state)) {
186 wake_up(&fimc->irq_queue);
187 goto done;
188 }
189
190 if (!list_empty(&cap->active_buf_q) &&
191 test_bit(ST_CAPT_RUN, &fimc->state) && deq_buf) {
192 v_buf = fimc_active_queue_pop(cap);
193
194 v_buf->vb.vb2_buf.timestamp = ktime_get_ns();
195 v_buf->vb.sequence = cap->frame_count++;
196
197 vb2_buffer_done(&v_buf->vb.vb2_buf, VB2_BUF_STATE_DONE);
198 }
199
200 if (!list_empty(&cap->pending_buf_q)) {
201
202 v_buf = fimc_pending_queue_pop(cap);
203 fimc_hw_set_output_addr(fimc, &v_buf->paddr, cap->buf_index);
204 v_buf->index = cap->buf_index;
205
206 /* Move the buffer to the capture active queue */
207 fimc_active_queue_add(cap, v_buf);
208
209 dbg("next frame: %d, done frame: %d",
210 fimc_hw_get_frame_index(fimc), v_buf->index);
211
212 if (++cap->buf_index >= FIMC_MAX_OUT_BUFS)
213 cap->buf_index = 0;
214 }
215 /*
216 * Set up a buffer at MIPI-CSIS if current image format
217 * requires the frame embedded data capture.
218 */
219 if (f->fmt->mdataplanes && !list_empty(&cap->active_buf_q)) {
220 unsigned int plane = ffs(f->fmt->mdataplanes) - 1;
221 unsigned int size = f->payload[plane];
222 s32 index = fimc_hw_get_frame_index(fimc);
223 void *vaddr;
224
225 list_for_each_entry(v_buf, &cap->active_buf_q, list) {
226 if (v_buf->index != index)
227 continue;
228 vaddr = vb2_plane_vaddr(&v_buf->vb.vb2_buf, plane);
229 v4l2_subdev_call(csis, video, s_rx_buffer,
230 vaddr, &size);
231 break;
232 }
233 }
234
235 if (cap->active_buf_cnt == 0) {
236 if (deq_buf)
237 clear_bit(ST_CAPT_RUN, &fimc->state);
238
239 if (++cap->buf_index >= FIMC_MAX_OUT_BUFS)
240 cap->buf_index = 0;
241 } else {
242 set_bit(ST_CAPT_RUN, &fimc->state);
243 }
244
245 if (test_bit(ST_CAPT_APPLY_CFG, &fimc->state))
246 fimc_capture_config_update(cap->ctx);
247 done:
248 if (cap->active_buf_cnt == 1) {
249 fimc_deactivate_capture(fimc);
250 clear_bit(ST_CAPT_STREAM, &fimc->state);
251 }
252
253 dbg("frame: %d, active_buf_cnt: %d",
254 fimc_hw_get_frame_index(fimc), cap->active_buf_cnt);
255 }
256
257
258 static int start_streaming(struct vb2_queue *q, unsigned int count)
259 {
260 struct fimc_ctx *ctx = q->drv_priv;
261 struct fimc_dev *fimc = ctx->fimc_dev;
262 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
263 int min_bufs;
264 int ret;
265
266 vid_cap->frame_count = 0;
267
268 ret = fimc_capture_hw_init(fimc);
269 if (ret) {
270 fimc_capture_state_cleanup(fimc, false);
271 return ret;
272 }
273
274 set_bit(ST_CAPT_PEND, &fimc->state);
275
276 min_bufs = fimc->vid_cap.reqbufs_count > 1 ? 2 : 1;
277
278 if (vid_cap->active_buf_cnt >= min_bufs &&
279 !test_and_set_bit(ST_CAPT_STREAM, &fimc->state)) {
280 fimc_activate_capture(ctx);
281
282 if (!test_and_set_bit(ST_CAPT_ISP_STREAM, &fimc->state))
283 return fimc_pipeline_call(&vid_cap->ve, set_stream, 1);
284 }
285
286 return 0;
287 }
288
289 static void stop_streaming(struct vb2_queue *q)
290 {
291 struct fimc_ctx *ctx = q->drv_priv;
292 struct fimc_dev *fimc = ctx->fimc_dev;
293
294 if (!fimc_capture_active(fimc))
295 return;
296
297 fimc_stop_capture(fimc, false);
298 }
299
300 int fimc_capture_suspend(struct fimc_dev *fimc)
301 {
302 bool suspend = fimc_capture_busy(fimc);
303
304 int ret = fimc_stop_capture(fimc, suspend);
305 if (ret)
306 return ret;
307 return fimc_pipeline_call(&fimc->vid_cap.ve, close);
308 }
309
310 static void buffer_queue(struct vb2_buffer *vb);
311
312 int fimc_capture_resume(struct fimc_dev *fimc)
313 {
314 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
315 struct exynos_video_entity *ve = &vid_cap->ve;
316 struct fimc_vid_buffer *buf;
317 int i;
318
319 if (!test_and_clear_bit(ST_CAPT_SUSPENDED, &fimc->state))
320 return 0;
321
322 INIT_LIST_HEAD(&fimc->vid_cap.active_buf_q);
323 vid_cap->buf_index = 0;
324 fimc_pipeline_call(ve, open, &ve->vdev.entity, false);
325 fimc_capture_hw_init(fimc);
326
327 clear_bit(ST_CAPT_SUSPENDED, &fimc->state);
328
329 for (i = 0; i < vid_cap->reqbufs_count; i++) {
330 if (list_empty(&vid_cap->pending_buf_q))
331 break;
332 buf = fimc_pending_queue_pop(vid_cap);
333 buffer_queue(&buf->vb.vb2_buf);
334 }
335 return 0;
336
337 }
338
339 static int queue_setup(struct vb2_queue *vq,
340 unsigned int *num_buffers, unsigned int *num_planes,
341 unsigned int sizes[], struct device *alloc_devs[])
342 {
343 struct fimc_ctx *ctx = vq->drv_priv;
344 struct fimc_frame *frame = &ctx->d_frame;
345 struct fimc_fmt *fmt = frame->fmt;
346 unsigned long wh = frame->f_width * frame->f_height;
347 int i;
348
349 if (fmt == NULL)
350 return -EINVAL;
351
352 if (*num_planes) {
353 if (*num_planes != fmt->memplanes)
354 return -EINVAL;
355 for (i = 0; i < *num_planes; i++)
356 if (sizes[i] < (wh * fmt->depth[i]) / 8)
357 return -EINVAL;
358 return 0;
359 }
360
361 *num_planes = fmt->memplanes;
362
363 for (i = 0; i < fmt->memplanes; i++) {
364 unsigned int size = (wh * fmt->depth[i]) / 8;
365
366 if (fimc_fmt_is_user_defined(fmt->color))
367 sizes[i] = frame->payload[i];
368 else
369 sizes[i] = max_t(u32, size, frame->payload[i]);
370 }
371
372 return 0;
373 }
374
375 static int buffer_prepare(struct vb2_buffer *vb)
376 {
377 struct vb2_queue *vq = vb->vb2_queue;
378 struct fimc_ctx *ctx = vq->drv_priv;
379 int i;
380
381 if (ctx->d_frame.fmt == NULL)
382 return -EINVAL;
383
384 for (i = 0; i < ctx->d_frame.fmt->memplanes; i++) {
385 unsigned long size = ctx->d_frame.payload[i];
386
387 if (vb2_plane_size(vb, i) < size) {
388 v4l2_err(&ctx->fimc_dev->vid_cap.ve.vdev,
389 "User buffer too small (%ld < %ld)\n",
390 vb2_plane_size(vb, i), size);
391 return -EINVAL;
392 }
393 vb2_set_plane_payload(vb, i, size);
394 }
395
396 return 0;
397 }
398
399 static void buffer_queue(struct vb2_buffer *vb)
400 {
401 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
402 struct fimc_vid_buffer *buf
403 = container_of(vbuf, struct fimc_vid_buffer, vb);
404 struct fimc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
405 struct fimc_dev *fimc = ctx->fimc_dev;
406 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
407 struct exynos_video_entity *ve = &vid_cap->ve;
408 unsigned long flags;
409 int min_bufs;
410
411 spin_lock_irqsave(&fimc->slock, flags);
412 fimc_prepare_addr(ctx, &buf->vb.vb2_buf, &ctx->d_frame, &buf->paddr);
413
414 if (!test_bit(ST_CAPT_SUSPENDED, &fimc->state) &&
415 !test_bit(ST_CAPT_STREAM, &fimc->state) &&
416 vid_cap->active_buf_cnt < FIMC_MAX_OUT_BUFS) {
417 /* Setup the buffer directly for processing. */
418 int buf_id = (vid_cap->reqbufs_count == 1) ? -1 :
419 vid_cap->buf_index;
420
421 fimc_hw_set_output_addr(fimc, &buf->paddr, buf_id);
422 buf->index = vid_cap->buf_index;
423 fimc_active_queue_add(vid_cap, buf);
424
425 if (++vid_cap->buf_index >= FIMC_MAX_OUT_BUFS)
426 vid_cap->buf_index = 0;
427 } else {
428 fimc_pending_queue_add(vid_cap, buf);
429 }
430
431 min_bufs = vid_cap->reqbufs_count > 1 ? 2 : 1;
432
433
434 if (vb2_is_streaming(&vid_cap->vbq) &&
435 vid_cap->active_buf_cnt >= min_bufs &&
436 !test_and_set_bit(ST_CAPT_STREAM, &fimc->state)) {
437 int ret;
438
439 fimc_activate_capture(ctx);
440 spin_unlock_irqrestore(&fimc->slock, flags);
441
442 if (test_and_set_bit(ST_CAPT_ISP_STREAM, &fimc->state))
443 return;
444
445 ret = fimc_pipeline_call(ve, set_stream, 1);
446 if (ret < 0)
447 v4l2_err(&ve->vdev, "stream on failed: %d\n", ret);
448 return;
449 }
450 spin_unlock_irqrestore(&fimc->slock, flags);
451 }
452
453 static const struct vb2_ops fimc_capture_qops = {
454 .queue_setup = queue_setup,
455 .buf_prepare = buffer_prepare,
456 .buf_queue = buffer_queue,
457 .wait_prepare = vb2_ops_wait_prepare,
458 .wait_finish = vb2_ops_wait_finish,
459 .start_streaming = start_streaming,
460 .stop_streaming = stop_streaming,
461 };
462
463 static int fimc_capture_set_default_format(struct fimc_dev *fimc);
464
465 static int fimc_capture_open(struct file *file)
466 {
467 struct fimc_dev *fimc = video_drvdata(file);
468 struct fimc_vid_cap *vc = &fimc->vid_cap;
469 struct exynos_video_entity *ve = &vc->ve;
470 int ret = -EBUSY;
471
472 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
473
474 mutex_lock(&fimc->lock);
475
476 if (fimc_m2m_active(fimc))
477 goto unlock;
478
479 set_bit(ST_CAPT_BUSY, &fimc->state);
480 ret = pm_runtime_get_sync(&fimc->pdev->dev);
481 if (ret < 0)
482 goto unlock;
483
484 ret = v4l2_fh_open(file);
485 if (ret) {
486 pm_runtime_put_sync(&fimc->pdev->dev);
487 goto unlock;
488 }
489
490 if (v4l2_fh_is_singular_file(file)) {
491 fimc_md_graph_lock(ve);
492
493 ret = fimc_pipeline_call(ve, open, &ve->vdev.entity, true);
494
495 if (ret == 0 && vc->user_subdev_api && vc->inh_sensor_ctrls) {
496 /*
497 * Recreate controls of the the video node to drop
498 * any controls inherited from the sensor subdev.
499 */
500 fimc_ctrls_delete(vc->ctx);
501
502 ret = fimc_ctrls_create(vc->ctx);
503 if (ret == 0)
504 vc->inh_sensor_ctrls = false;
505 }
506 if (ret == 0)
507 ve->vdev.entity.use_count++;
508
509 fimc_md_graph_unlock(ve);
510
511 if (ret == 0)
512 ret = fimc_capture_set_default_format(fimc);
513
514 if (ret < 0) {
515 clear_bit(ST_CAPT_BUSY, &fimc->state);
516 pm_runtime_put_sync(&fimc->pdev->dev);
517 v4l2_fh_release(file);
518 }
519 }
520 unlock:
521 mutex_unlock(&fimc->lock);
522 return ret;
523 }
524
525 static int fimc_capture_release(struct file *file)
526 {
527 struct fimc_dev *fimc = video_drvdata(file);
528 struct fimc_vid_cap *vc = &fimc->vid_cap;
529 bool close = v4l2_fh_is_singular_file(file);
530 int ret;
531
532 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
533
534 mutex_lock(&fimc->lock);
535
536 if (close && vc->streaming) {
537 media_pipeline_stop(&vc->ve.vdev.entity);
538 vc->streaming = false;
539 }
540
541 ret = _vb2_fop_release(file, NULL);
542
543 if (close) {
544 clear_bit(ST_CAPT_BUSY, &fimc->state);
545 fimc_pipeline_call(&vc->ve, close);
546 clear_bit(ST_CAPT_SUSPENDED, &fimc->state);
547
548 fimc_md_graph_lock(&vc->ve);
549 vc->ve.vdev.entity.use_count--;
550 fimc_md_graph_unlock(&vc->ve);
551 }
552
553 pm_runtime_put_sync(&fimc->pdev->dev);
554 mutex_unlock(&fimc->lock);
555
556 return ret;
557 }
558
559 static const struct v4l2_file_operations fimc_capture_fops = {
560 .owner = THIS_MODULE,
561 .open = fimc_capture_open,
562 .release = fimc_capture_release,
563 .poll = vb2_fop_poll,
564 .unlocked_ioctl = video_ioctl2,
565 .mmap = vb2_fop_mmap,
566 };
567
568 /*
569 * Format and crop negotiation helpers
570 */
571
572 static struct fimc_fmt *fimc_capture_try_format(struct fimc_ctx *ctx,
573 u32 *width, u32 *height,
574 u32 *code, u32 *fourcc, int pad)
575 {
576 bool rotation = ctx->rotation == 90 || ctx->rotation == 270;
577 struct fimc_dev *fimc = ctx->fimc_dev;
578 const struct fimc_variant *var = fimc->variant;
579 const struct fimc_pix_limit *pl = var->pix_limit;
580 struct fimc_frame *dst = &ctx->d_frame;
581 u32 depth, min_w, max_w, min_h, align_h = 3;
582 u32 mask = FMT_FLAGS_CAM;
583 struct fimc_fmt *ffmt;
584
585 /* Conversion from/to JPEG or User Defined format is not supported */
586 if (code && ctx->s_frame.fmt && pad == FIMC_SD_PAD_SOURCE &&
587 fimc_fmt_is_user_defined(ctx->s_frame.fmt->color))
588 *code = ctx->s_frame.fmt->mbus_code;
589
590 if (fourcc && *fourcc != V4L2_PIX_FMT_JPEG && pad == FIMC_SD_PAD_SOURCE)
591 mask |= FMT_FLAGS_M2M;
592
593 if (pad == FIMC_SD_PAD_SINK_FIFO)
594 mask = FMT_FLAGS_WRITEBACK;
595
596 ffmt = fimc_find_format(fourcc, code, mask, 0);
597 if (WARN_ON(!ffmt))
598 return NULL;
599
600 if (code)
601 *code = ffmt->mbus_code;
602 if (fourcc)
603 *fourcc = ffmt->fourcc;
604
605 if (pad != FIMC_SD_PAD_SOURCE) {
606 max_w = fimc_fmt_is_user_defined(ffmt->color) ?
607 pl->scaler_dis_w : pl->scaler_en_w;
608 /* Apply the camera input interface pixel constraints */
609 v4l_bound_align_image(width, max_t(u32, *width, 32), max_w, 4,
610 height, max_t(u32, *height, 32),
611 FIMC_CAMIF_MAX_HEIGHT,
612 fimc_fmt_is_user_defined(ffmt->color) ?
613 3 : 1,
614 0);
615 return ffmt;
616 }
617 /* Can't scale or crop in transparent (JPEG) transfer mode */
618 if (fimc_fmt_is_user_defined(ffmt->color)) {
619 *width = ctx->s_frame.f_width;
620 *height = ctx->s_frame.f_height;
621 return ffmt;
622 }
623 /* Apply the scaler and the output DMA constraints */
624 max_w = rotation ? pl->out_rot_en_w : pl->out_rot_dis_w;
625 if (ctx->state & FIMC_COMPOSE) {
626 min_w = dst->offs_h + dst->width;
627 min_h = dst->offs_v + dst->height;
628 } else {
629 min_w = var->min_out_pixsize;
630 min_h = var->min_out_pixsize;
631 }
632 if (var->min_vsize_align == 1 && !rotation)
633 align_h = fimc_fmt_is_rgb(ffmt->color) ? 0 : 1;
634
635 depth = fimc_get_format_depth(ffmt);
636 v4l_bound_align_image(width, min_w, max_w,
637 ffs(var->min_out_pixsize) - 1,
638 height, min_h, FIMC_CAMIF_MAX_HEIGHT,
639 align_h,
640 64/(ALIGN(depth, 8)));
641
642 dbg("pad%d: code: 0x%x, %dx%d. dst fmt: %dx%d",
643 pad, code ? *code : 0, *width, *height,
644 dst->f_width, dst->f_height);
645
646 return ffmt;
647 }
648
649 static void fimc_capture_try_selection(struct fimc_ctx *ctx,
650 struct v4l2_rect *r,
651 int target)
652 {
653 bool rotate = ctx->rotation == 90 || ctx->rotation == 270;
654 struct fimc_dev *fimc = ctx->fimc_dev;
655 const struct fimc_variant *var = fimc->variant;
656 const struct fimc_pix_limit *pl = var->pix_limit;
657 struct fimc_frame *sink = &ctx->s_frame;
658 u32 max_w, max_h, min_w = 0, min_h = 0, min_sz;
659 u32 align_sz = 0, align_h = 4;
660 u32 max_sc_h, max_sc_v;
661
662 /* In JPEG transparent transfer mode cropping is not supported */
663 if (fimc_fmt_is_user_defined(ctx->d_frame.fmt->color)) {
664 r->width = sink->f_width;
665 r->height = sink->f_height;
666 r->left = r->top = 0;
667 return;
668 }
669 if (target == V4L2_SEL_TGT_COMPOSE) {
670 u32 tmp_min_h = ffs(sink->width) - 3;
671 u32 tmp_min_v = ffs(sink->height) - 1;
672
673 if (ctx->rotation != 90 && ctx->rotation != 270)
674 align_h = 1;
675 max_sc_h = min(SCALER_MAX_HRATIO, 1 << tmp_min_h);
676 max_sc_v = min(SCALER_MAX_VRATIO, 1 << tmp_min_v);
677 min_sz = var->min_out_pixsize;
678 } else {
679 u32 depth = fimc_get_format_depth(sink->fmt);
680 align_sz = 64/ALIGN(depth, 8);
681 min_sz = var->min_inp_pixsize;
682 min_w = min_h = min_sz;
683 max_sc_h = max_sc_v = 1;
684 }
685 /*
686 * For the compose rectangle the following constraints must be met:
687 * - it must fit in the sink pad format rectangle (f_width/f_height);
688 * - maximum downscaling ratio is 64;
689 * - maximum crop size depends if the rotator is used or not;
690 * - the sink pad format width/height must be 4 multiple of the
691 * prescaler ratios determined by sink pad size and source pad crop,
692 * the prescaler ratio is returned by fimc_get_scaler_factor().
693 */
694 max_w = min_t(u32,
695 rotate ? pl->out_rot_en_w : pl->out_rot_dis_w,
696 rotate ? sink->f_height : sink->f_width);
697 max_h = min_t(u32, FIMC_CAMIF_MAX_HEIGHT, sink->f_height);
698
699 if (target == V4L2_SEL_TGT_COMPOSE) {
700 min_w = min_t(u32, max_w, sink->f_width / max_sc_h);
701 min_h = min_t(u32, max_h, sink->f_height / max_sc_v);
702 if (rotate) {
703 swap(max_sc_h, max_sc_v);
704 swap(min_w, min_h);
705 }
706 }
707 v4l_bound_align_image(&r->width, min_w, max_w, ffs(min_sz) - 1,
708 &r->height, min_h, max_h, align_h,
709 align_sz);
710 /* Adjust left/top if crop/compose rectangle is out of bounds */
711 r->left = clamp_t(u32, r->left, 0, sink->f_width - r->width);
712 r->top = clamp_t(u32, r->top, 0, sink->f_height - r->height);
713 r->left = round_down(r->left, var->hor_offs_align);
714
715 dbg("target %#x: (%d,%d)/%dx%d, sink fmt: %dx%d",
716 target, r->left, r->top, r->width, r->height,
717 sink->f_width, sink->f_height);
718 }
719
720 /*
721 * The video node ioctl operations
722 */
723 static int fimc_cap_querycap(struct file *file, void *priv,
724 struct v4l2_capability *cap)
725 {
726 struct fimc_dev *fimc = video_drvdata(file);
727
728 __fimc_vidioc_querycap(&fimc->pdev->dev, cap);
729 return 0;
730 }
731
732 static int fimc_cap_enum_fmt(struct file *file, void *priv,
733 struct v4l2_fmtdesc *f)
734 {
735 struct fimc_fmt *fmt;
736
737 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM | FMT_FLAGS_M2M,
738 f->index);
739 if (!fmt)
740 return -EINVAL;
741 f->pixelformat = fmt->fourcc;
742 return 0;
743 }
744
745 static struct media_entity *fimc_pipeline_get_head(struct media_entity *me)
746 {
747 struct media_pad *pad = &me->pads[0];
748
749 while (!(pad->flags & MEDIA_PAD_FL_SOURCE)) {
750 pad = media_entity_remote_pad(pad);
751 if (!pad)
752 break;
753 me = pad->entity;
754 pad = &me->pads[0];
755 }
756
757 return me;
758 }
759
760 /**
761 * fimc_pipeline_try_format - negotiate and/or set formats at pipeline
762 * elements
763 * @ctx: FIMC capture context
764 * @tfmt: media bus format to try/set on subdevs
765 * @fmt_id: fimc pixel format id corresponding to returned @tfmt (output)
766 * @set: true to set format on subdevs, false to try only
767 */
768 static int fimc_pipeline_try_format(struct fimc_ctx *ctx,
769 struct v4l2_mbus_framefmt *tfmt,
770 struct fimc_fmt **fmt_id,
771 bool set)
772 {
773 struct fimc_dev *fimc = ctx->fimc_dev;
774 struct fimc_pipeline *p = to_fimc_pipeline(fimc->vid_cap.ve.pipe);
775 struct v4l2_subdev *sd = p->subdevs[IDX_SENSOR];
776 struct v4l2_subdev_format sfmt;
777 struct v4l2_mbus_framefmt *mf = &sfmt.format;
778 struct media_entity *me;
779 struct fimc_fmt *ffmt;
780 struct media_pad *pad;
781 int ret, i = 1;
782 u32 fcc;
783
784 if (WARN_ON(!sd || !tfmt))
785 return -EINVAL;
786
787 memset(&sfmt, 0, sizeof(sfmt));
788 sfmt.format = *tfmt;
789 sfmt.which = set ? V4L2_SUBDEV_FORMAT_ACTIVE : V4L2_SUBDEV_FORMAT_TRY;
790
791 me = fimc_pipeline_get_head(&sd->entity);
792
793 while (1) {
794 ffmt = fimc_find_format(NULL, mf->code != 0 ? &mf->code : NULL,
795 FMT_FLAGS_CAM, i++);
796 if (ffmt == NULL) {
797 /*
798 * Notify user-space if common pixel code for
799 * host and sensor does not exist.
800 */
801 return -EINVAL;
802 }
803 mf->code = tfmt->code = ffmt->mbus_code;
804
805 /* set format on all pipeline subdevs */
806 while (me != &fimc->vid_cap.subdev.entity) {
807 sd = media_entity_to_v4l2_subdev(me);
808
809 sfmt.pad = 0;
810 ret = v4l2_subdev_call(sd, pad, set_fmt, NULL, &sfmt);
811 if (ret)
812 return ret;
813
814 if (me->pads[0].flags & MEDIA_PAD_FL_SINK) {
815 sfmt.pad = me->num_pads - 1;
816 mf->code = tfmt->code;
817 ret = v4l2_subdev_call(sd, pad, set_fmt, NULL,
818 &sfmt);
819 if (ret)
820 return ret;
821 }
822
823 pad = media_entity_remote_pad(&me->pads[sfmt.pad]);
824 if (!pad)
825 return -EINVAL;
826 me = pad->entity;
827 }
828
829 if (mf->code != tfmt->code)
830 continue;
831
832 fcc = ffmt->fourcc;
833 tfmt->width = mf->width;
834 tfmt->height = mf->height;
835 ffmt = fimc_capture_try_format(ctx, &tfmt->width, &tfmt->height,
836 NULL, &fcc, FIMC_SD_PAD_SINK_CAM);
837 ffmt = fimc_capture_try_format(ctx, &tfmt->width, &tfmt->height,
838 NULL, &fcc, FIMC_SD_PAD_SOURCE);
839 if (ffmt && ffmt->mbus_code)
840 mf->code = ffmt->mbus_code;
841 if (mf->width != tfmt->width || mf->height != tfmt->height)
842 continue;
843 tfmt->code = mf->code;
844 break;
845 }
846
847 if (fmt_id && ffmt)
848 *fmt_id = ffmt;
849 *tfmt = *mf;
850
851 return 0;
852 }
853
854 /**
855 * fimc_get_sensor_frame_desc - query the sensor for media bus frame parameters
856 * @sensor: pointer to the sensor subdev
857 * @plane_fmt: provides plane sizes corresponding to the frame layout entries
858 * @num_planes: number of planes
859 * @try: true to set the frame parameters, false to query only
860 *
861 * This function is used by this driver only for compressed/blob data formats.
862 */
863 static int fimc_get_sensor_frame_desc(struct v4l2_subdev *sensor,
864 struct v4l2_plane_pix_format *plane_fmt,
865 unsigned int num_planes, bool try)
866 {
867 struct v4l2_mbus_frame_desc fd;
868 int i, ret;
869 int pad;
870
871 for (i = 0; i < num_planes; i++)
872 fd.entry[i].length = plane_fmt[i].sizeimage;
873
874 pad = sensor->entity.num_pads - 1;
875 if (try)
876 ret = v4l2_subdev_call(sensor, pad, set_frame_desc, pad, &fd);
877 else
878 ret = v4l2_subdev_call(sensor, pad, get_frame_desc, pad, &fd);
879
880 if (ret < 0)
881 return ret;
882
883 if (num_planes != fd.num_entries)
884 return -EINVAL;
885
886 for (i = 0; i < num_planes; i++)
887 plane_fmt[i].sizeimage = fd.entry[i].length;
888
889 if (fd.entry[0].length > FIMC_MAX_JPEG_BUF_SIZE) {
890 v4l2_err(sensor->v4l2_dev, "Unsupported buffer size: %u\n",
891 fd.entry[0].length);
892
893 return -EINVAL;
894 }
895
896 return 0;
897 }
898
899 static int fimc_cap_g_fmt_mplane(struct file *file, void *fh,
900 struct v4l2_format *f)
901 {
902 struct fimc_dev *fimc = video_drvdata(file);
903
904 __fimc_get_format(&fimc->vid_cap.ctx->d_frame, f);
905 return 0;
906 }
907
908 /*
909 * Try or set format on the fimc.X.capture video node and additionally
910 * on the whole pipeline if @try is false.
911 * Locking: the caller must _not_ hold the graph mutex.
912 */
913 static int __video_try_or_set_format(struct fimc_dev *fimc,
914 struct v4l2_format *f, bool try,
915 struct fimc_fmt **inp_fmt,
916 struct fimc_fmt **out_fmt)
917 {
918 struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
919 struct fimc_vid_cap *vc = &fimc->vid_cap;
920 struct exynos_video_entity *ve = &vc->ve;
921 struct fimc_ctx *ctx = vc->ctx;
922 unsigned int width = 0, height = 0;
923 int ret = 0;
924
925 /* Pre-configure format at the camera input interface, for JPEG only */
926 if (fimc_jpeg_fourcc(pix->pixelformat)) {
927 fimc_capture_try_format(ctx, &pix->width, &pix->height,
928 NULL, &pix->pixelformat,
929 FIMC_SD_PAD_SINK_CAM);
930 if (try) {
931 width = pix->width;
932 height = pix->height;
933 } else {
934 ctx->s_frame.f_width = pix->width;
935 ctx->s_frame.f_height = pix->height;
936 }
937 }
938
939 /* Try the format at the scaler and the DMA output */
940 *out_fmt = fimc_capture_try_format(ctx, &pix->width, &pix->height,
941 NULL, &pix->pixelformat,
942 FIMC_SD_PAD_SOURCE);
943 if (*out_fmt == NULL)
944 return -EINVAL;
945
946 /* Restore image width/height for JPEG (no resizing supported). */
947 if (try && fimc_jpeg_fourcc(pix->pixelformat)) {
948 pix->width = width;
949 pix->height = height;
950 }
951
952 /* Try to match format at the host and the sensor */
953 if (!vc->user_subdev_api) {
954 struct v4l2_mbus_framefmt mbus_fmt;
955 struct v4l2_mbus_framefmt *mf;
956
957 mf = try ? &mbus_fmt : &fimc->vid_cap.ci_fmt;
958
959 mf->code = (*out_fmt)->mbus_code;
960 mf->width = pix->width;
961 mf->height = pix->height;
962
963 fimc_md_graph_lock(ve);
964 ret = fimc_pipeline_try_format(ctx, mf, inp_fmt, try);
965 fimc_md_graph_unlock(ve);
966
967 if (ret < 0)
968 return ret;
969
970 pix->width = mf->width;
971 pix->height = mf->height;
972 }
973
974 fimc_adjust_mplane_format(*out_fmt, pix->width, pix->height, pix);
975
976 if ((*out_fmt)->flags & FMT_FLAGS_COMPRESSED) {
977 struct v4l2_subdev *sensor;
978
979 fimc_md_graph_lock(ve);
980
981 sensor = __fimc_md_get_subdev(ve->pipe, IDX_SENSOR);
982 if (sensor)
983 fimc_get_sensor_frame_desc(sensor, pix->plane_fmt,
984 (*out_fmt)->memplanes, try);
985 else
986 ret = -EPIPE;
987
988 fimc_md_graph_unlock(ve);
989 }
990
991 return ret;
992 }
993
994 static int fimc_cap_try_fmt_mplane(struct file *file, void *fh,
995 struct v4l2_format *f)
996 {
997 struct fimc_dev *fimc = video_drvdata(file);
998 struct fimc_fmt *out_fmt = NULL, *inp_fmt = NULL;
999
1000 return __video_try_or_set_format(fimc, f, true, &inp_fmt, &out_fmt);
1001 }
1002
1003 static void fimc_capture_mark_jpeg_xfer(struct fimc_ctx *ctx,
1004 enum fimc_color_fmt color)
1005 {
1006 bool jpeg = fimc_fmt_is_user_defined(color);
1007
1008 ctx->scaler.enabled = !jpeg;
1009 fimc_ctrls_activate(ctx, !jpeg);
1010
1011 if (jpeg)
1012 set_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state);
1013 else
1014 clear_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state);
1015 }
1016
1017 static int __fimc_capture_set_format(struct fimc_dev *fimc,
1018 struct v4l2_format *f)
1019 {
1020 struct fimc_vid_cap *vc = &fimc->vid_cap;
1021 struct fimc_ctx *ctx = vc->ctx;
1022 struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
1023 struct fimc_frame *ff = &ctx->d_frame;
1024 struct fimc_fmt *inp_fmt = NULL;
1025 int ret, i;
1026
1027 if (vb2_is_busy(&fimc->vid_cap.vbq))
1028 return -EBUSY;
1029
1030 ret = __video_try_or_set_format(fimc, f, false, &inp_fmt, &ff->fmt);
1031 if (ret < 0)
1032 return ret;
1033
1034 /* Update RGB Alpha control state and value range */
1035 fimc_alpha_ctrl_update(ctx);
1036
1037 for (i = 0; i < ff->fmt->memplanes; i++) {
1038 ff->bytesperline[i] = pix->plane_fmt[i].bytesperline;
1039 ff->payload[i] = pix->plane_fmt[i].sizeimage;
1040 }
1041
1042 set_frame_bounds(ff, pix->width, pix->height);
1043 /* Reset the composition rectangle if not yet configured */
1044 if (!(ctx->state & FIMC_COMPOSE))
1045 set_frame_crop(ff, 0, 0, pix->width, pix->height);
1046
1047 fimc_capture_mark_jpeg_xfer(ctx, ff->fmt->color);
1048
1049 /* Reset cropping and set format at the camera interface input */
1050 if (!vc->user_subdev_api) {
1051 ctx->s_frame.fmt = inp_fmt;
1052 set_frame_bounds(&ctx->s_frame, pix->width, pix->height);
1053 set_frame_crop(&ctx->s_frame, 0, 0, pix->width, pix->height);
1054 }
1055
1056 return ret;
1057 }
1058
1059 static int fimc_cap_s_fmt_mplane(struct file *file, void *priv,
1060 struct v4l2_format *f)
1061 {
1062 struct fimc_dev *fimc = video_drvdata(file);
1063
1064 return __fimc_capture_set_format(fimc, f);
1065 }
1066
1067 static int fimc_cap_enum_input(struct file *file, void *priv,
1068 struct v4l2_input *i)
1069 {
1070 struct fimc_dev *fimc = video_drvdata(file);
1071 struct exynos_video_entity *ve = &fimc->vid_cap.ve;
1072 struct v4l2_subdev *sd;
1073
1074 if (i->index != 0)
1075 return -EINVAL;
1076
1077 i->type = V4L2_INPUT_TYPE_CAMERA;
1078 fimc_md_graph_lock(ve);
1079 sd = __fimc_md_get_subdev(ve->pipe, IDX_SENSOR);
1080 fimc_md_graph_unlock(ve);
1081
1082 if (sd)
1083 strscpy(i->name, sd->name, sizeof(i->name));
1084
1085 return 0;
1086 }
1087
1088 static int fimc_cap_s_input(struct file *file, void *priv, unsigned int i)
1089 {
1090 return i == 0 ? i : -EINVAL;
1091 }
1092
1093 static int fimc_cap_g_input(struct file *file, void *priv, unsigned int *i)
1094 {
1095 *i = 0;
1096 return 0;
1097 }
1098
1099 /**
1100 * fimc_pipeline_validate - check for formats inconsistencies
1101 * between source and sink pad of each link
1102 * @fimc: the FIMC device this context applies to
1103 *
1104 * Return 0 if all formats match or -EPIPE otherwise.
1105 */
1106 static int fimc_pipeline_validate(struct fimc_dev *fimc)
1107 {
1108 struct v4l2_subdev_format sink_fmt, src_fmt;
1109 struct fimc_vid_cap *vc = &fimc->vid_cap;
1110 struct v4l2_subdev *sd = &vc->subdev;
1111 struct fimc_pipeline *p = to_fimc_pipeline(vc->ve.pipe);
1112 struct media_pad *sink_pad, *src_pad;
1113 int i, ret;
1114
1115 while (1) {
1116 /*
1117 * Find current entity sink pad and any remote sink pad linked
1118 * to it. We stop if there is no sink pad in current entity or
1119 * it is not linked to any other remote entity.
1120 */
1121 src_pad = NULL;
1122
1123 for (i = 0; i < sd->entity.num_pads; i++) {
1124 struct media_pad *p = &sd->entity.pads[i];
1125
1126 if (p->flags & MEDIA_PAD_FL_SINK) {
1127 sink_pad = p;
1128 src_pad = media_entity_remote_pad(sink_pad);
1129 if (src_pad)
1130 break;
1131 }
1132 }
1133
1134 if (!src_pad || !is_media_entity_v4l2_subdev(src_pad->entity))
1135 break;
1136
1137 /* Don't call FIMC subdev operation to avoid nested locking */
1138 if (sd == &vc->subdev) {
1139 struct fimc_frame *ff = &vc->ctx->s_frame;
1140 sink_fmt.format.width = ff->f_width;
1141 sink_fmt.format.height = ff->f_height;
1142 sink_fmt.format.code = ff->fmt ? ff->fmt->mbus_code : 0;
1143 } else {
1144 sink_fmt.pad = sink_pad->index;
1145 sink_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
1146 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &sink_fmt);
1147 if (ret < 0 && ret != -ENOIOCTLCMD)
1148 return -EPIPE;
1149 }
1150
1151 /* Retrieve format at the source pad */
1152 sd = media_entity_to_v4l2_subdev(src_pad->entity);
1153 src_fmt.pad = src_pad->index;
1154 src_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
1155 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &src_fmt);
1156 if (ret < 0 && ret != -ENOIOCTLCMD)
1157 return -EPIPE;
1158
1159 if (src_fmt.format.width != sink_fmt.format.width ||
1160 src_fmt.format.height != sink_fmt.format.height ||
1161 src_fmt.format.code != sink_fmt.format.code)
1162 return -EPIPE;
1163
1164 if (sd == p->subdevs[IDX_SENSOR] &&
1165 fimc_user_defined_mbus_fmt(src_fmt.format.code)) {
1166 struct v4l2_plane_pix_format plane_fmt[FIMC_MAX_PLANES];
1167 struct fimc_frame *frame = &vc->ctx->d_frame;
1168 unsigned int i;
1169
1170 ret = fimc_get_sensor_frame_desc(sd, plane_fmt,
1171 frame->fmt->memplanes,
1172 false);
1173 if (ret < 0)
1174 return -EPIPE;
1175
1176 for (i = 0; i < frame->fmt->memplanes; i++)
1177 if (frame->payload[i] < plane_fmt[i].sizeimage)
1178 return -EPIPE;
1179 }
1180 }
1181 return 0;
1182 }
1183
1184 static int fimc_cap_streamon(struct file *file, void *priv,
1185 enum v4l2_buf_type type)
1186 {
1187 struct fimc_dev *fimc = video_drvdata(file);
1188 struct fimc_vid_cap *vc = &fimc->vid_cap;
1189 struct media_entity *entity = &vc->ve.vdev.entity;
1190 struct fimc_source_info *si = NULL;
1191 struct v4l2_subdev *sd;
1192 int ret;
1193
1194 if (fimc_capture_active(fimc))
1195 return -EBUSY;
1196
1197 ret = media_pipeline_start(entity, &vc->ve.pipe->mp);
1198 if (ret < 0)
1199 return ret;
1200
1201 sd = __fimc_md_get_subdev(vc->ve.pipe, IDX_SENSOR);
1202 if (sd)
1203 si = v4l2_get_subdev_hostdata(sd);
1204
1205 if (si == NULL) {
1206 ret = -EPIPE;
1207 goto err_p_stop;
1208 }
1209 /*
1210 * Save configuration data related to currently attached image
1211 * sensor or other data source, e.g. FIMC-IS.
1212 */
1213 vc->source_config = *si;
1214
1215 if (vc->input == GRP_ID_FIMC_IS)
1216 vc->source_config.fimc_bus_type = FIMC_BUS_TYPE_ISP_WRITEBACK;
1217
1218 if (vc->user_subdev_api) {
1219 ret = fimc_pipeline_validate(fimc);
1220 if (ret < 0)
1221 goto err_p_stop;
1222 }
1223
1224 ret = vb2_ioctl_streamon(file, priv, type);
1225 if (!ret) {
1226 vc->streaming = true;
1227 return ret;
1228 }
1229
1230 err_p_stop:
1231 media_pipeline_stop(entity);
1232 return ret;
1233 }
1234
1235 static int fimc_cap_streamoff(struct file *file, void *priv,
1236 enum v4l2_buf_type type)
1237 {
1238 struct fimc_dev *fimc = video_drvdata(file);
1239 struct fimc_vid_cap *vc = &fimc->vid_cap;
1240 int ret;
1241
1242 ret = vb2_ioctl_streamoff(file, priv, type);
1243 if (ret < 0)
1244 return ret;
1245
1246 media_pipeline_stop(&vc->ve.vdev.entity);
1247 vc->streaming = false;
1248 return 0;
1249 }
1250
1251 static int fimc_cap_reqbufs(struct file *file, void *priv,
1252 struct v4l2_requestbuffers *reqbufs)
1253 {
1254 struct fimc_dev *fimc = video_drvdata(file);
1255 int ret;
1256
1257 ret = vb2_ioctl_reqbufs(file, priv, reqbufs);
1258
1259 if (!ret)
1260 fimc->vid_cap.reqbufs_count = reqbufs->count;
1261
1262 return ret;
1263 }
1264
1265 static int fimc_cap_g_selection(struct file *file, void *fh,
1266 struct v4l2_selection *s)
1267 {
1268 struct fimc_dev *fimc = video_drvdata(file);
1269 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1270 struct fimc_frame *f = &ctx->s_frame;
1271
1272 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1273 return -EINVAL;
1274
1275 switch (s->target) {
1276 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
1277 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1278 f = &ctx->d_frame;
1279 /* fall through */
1280 case V4L2_SEL_TGT_CROP_BOUNDS:
1281 case V4L2_SEL_TGT_CROP_DEFAULT:
1282 s->r.left = 0;
1283 s->r.top = 0;
1284 s->r.width = f->o_width;
1285 s->r.height = f->o_height;
1286 return 0;
1287
1288 case V4L2_SEL_TGT_COMPOSE:
1289 f = &ctx->d_frame;
1290 /* fall through */
1291 case V4L2_SEL_TGT_CROP:
1292 s->r.left = f->offs_h;
1293 s->r.top = f->offs_v;
1294 s->r.width = f->width;
1295 s->r.height = f->height;
1296 return 0;
1297 }
1298
1299 return -EINVAL;
1300 }
1301
1302 /* Return 1 if rectangle a is enclosed in rectangle b, or 0 otherwise. */
1303 static int enclosed_rectangle(struct v4l2_rect *a, struct v4l2_rect *b)
1304 {
1305 if (a->left < b->left || a->top < b->top)
1306 return 0;
1307 if (a->left + a->width > b->left + b->width)
1308 return 0;
1309 if (a->top + a->height > b->top + b->height)
1310 return 0;
1311
1312 return 1;
1313 }
1314
1315 static int fimc_cap_s_selection(struct file *file, void *fh,
1316 struct v4l2_selection *s)
1317 {
1318 struct fimc_dev *fimc = video_drvdata(file);
1319 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1320 struct v4l2_rect rect = s->r;
1321 struct fimc_frame *f;
1322 unsigned long flags;
1323
1324 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1325 return -EINVAL;
1326
1327 if (s->target == V4L2_SEL_TGT_COMPOSE)
1328 f = &ctx->d_frame;
1329 else if (s->target == V4L2_SEL_TGT_CROP)
1330 f = &ctx->s_frame;
1331 else
1332 return -EINVAL;
1333
1334 fimc_capture_try_selection(ctx, &rect, s->target);
1335
1336 if (s->flags & V4L2_SEL_FLAG_LE &&
1337 !enclosed_rectangle(&rect, &s->r))
1338 return -ERANGE;
1339
1340 if (s->flags & V4L2_SEL_FLAG_GE &&
1341 !enclosed_rectangle(&s->r, &rect))
1342 return -ERANGE;
1343
1344 s->r = rect;
1345 spin_lock_irqsave(&fimc->slock, flags);
1346 set_frame_crop(f, s->r.left, s->r.top, s->r.width,
1347 s->r.height);
1348 spin_unlock_irqrestore(&fimc->slock, flags);
1349
1350 set_bit(ST_CAPT_APPLY_CFG, &fimc->state);
1351 return 0;
1352 }
1353
1354 static const struct v4l2_ioctl_ops fimc_capture_ioctl_ops = {
1355 .vidioc_querycap = fimc_cap_querycap,
1356
1357 .vidioc_enum_fmt_vid_cap = fimc_cap_enum_fmt,
1358 .vidioc_try_fmt_vid_cap_mplane = fimc_cap_try_fmt_mplane,
1359 .vidioc_s_fmt_vid_cap_mplane = fimc_cap_s_fmt_mplane,
1360 .vidioc_g_fmt_vid_cap_mplane = fimc_cap_g_fmt_mplane,
1361
1362 .vidioc_reqbufs = fimc_cap_reqbufs,
1363 .vidioc_querybuf = vb2_ioctl_querybuf,
1364 .vidioc_qbuf = vb2_ioctl_qbuf,
1365 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1366 .vidioc_expbuf = vb2_ioctl_expbuf,
1367 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
1368 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1369
1370 .vidioc_streamon = fimc_cap_streamon,
1371 .vidioc_streamoff = fimc_cap_streamoff,
1372
1373 .vidioc_g_selection = fimc_cap_g_selection,
1374 .vidioc_s_selection = fimc_cap_s_selection,
1375
1376 .vidioc_enum_input = fimc_cap_enum_input,
1377 .vidioc_s_input = fimc_cap_s_input,
1378 .vidioc_g_input = fimc_cap_g_input,
1379 };
1380
1381 /* Capture subdev media entity operations */
1382 static int fimc_link_setup(struct media_entity *entity,
1383 const struct media_pad *local,
1384 const struct media_pad *remote, u32 flags)
1385 {
1386 struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
1387 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1388 struct fimc_vid_cap *vc = &fimc->vid_cap;
1389 struct v4l2_subdev *sensor;
1390
1391 if (!is_media_entity_v4l2_subdev(remote->entity))
1392 return -EINVAL;
1393
1394 if (WARN_ON(fimc == NULL))
1395 return 0;
1396
1397 dbg("%s --> %s, flags: 0x%x. input: 0x%x",
1398 local->entity->name, remote->entity->name, flags,
1399 fimc->vid_cap.input);
1400
1401 if (!(flags & MEDIA_LNK_FL_ENABLED)) {
1402 fimc->vid_cap.input = 0;
1403 return 0;
1404 }
1405
1406 if (vc->input != 0)
1407 return -EBUSY;
1408
1409 vc->input = sd->grp_id;
1410
1411 if (vc->user_subdev_api || vc->inh_sensor_ctrls)
1412 return 0;
1413
1414 /* Inherit V4L2 controls from the image sensor subdev. */
1415 sensor = fimc_find_remote_sensor(&vc->subdev.entity);
1416 if (sensor == NULL)
1417 return 0;
1418
1419 return v4l2_ctrl_add_handler(&vc->ctx->ctrls.handler,
1420 sensor->ctrl_handler, NULL, true);
1421 }
1422
1423 static const struct media_entity_operations fimc_sd_media_ops = {
1424 .link_setup = fimc_link_setup,
1425 };
1426
1427 /**
1428 * fimc_sensor_notify - v4l2_device notification from a sensor subdev
1429 * @sd: pointer to a subdev generating the notification
1430 * @notification: the notification type, must be S5P_FIMC_TX_END_NOTIFY
1431 * @arg: pointer to an u32 type integer that stores the frame payload value
1432 *
1433 * The End Of Frame notification sent by sensor subdev in its still capture
1434 * mode. If there is only a single VSYNC generated by the sensor at the
1435 * beginning of a frame transmission, FIMC does not issue the LastIrq
1436 * (end of frame) interrupt. And this notification is used to complete the
1437 * frame capture and returning a buffer to user-space. Subdev drivers should
1438 * call this notification from their last 'End of frame capture' interrupt.
1439 */
1440 void fimc_sensor_notify(struct v4l2_subdev *sd, unsigned int notification,
1441 void *arg)
1442 {
1443 struct fimc_source_info *si;
1444 struct fimc_vid_buffer *buf;
1445 struct fimc_md *fmd;
1446 struct fimc_dev *fimc;
1447 unsigned long flags;
1448
1449 if (sd == NULL)
1450 return;
1451
1452 si = v4l2_get_subdev_hostdata(sd);
1453 fmd = entity_to_fimc_mdev(&sd->entity);
1454
1455 spin_lock_irqsave(&fmd->slock, flags);
1456
1457 fimc = si ? source_to_sensor_info(si)->host : NULL;
1458
1459 if (fimc && arg && notification == S5P_FIMC_TX_END_NOTIFY &&
1460 test_bit(ST_CAPT_PEND, &fimc->state)) {
1461 unsigned long irq_flags;
1462 spin_lock_irqsave(&fimc->slock, irq_flags);
1463 if (!list_empty(&fimc->vid_cap.active_buf_q)) {
1464 buf = list_entry(fimc->vid_cap.active_buf_q.next,
1465 struct fimc_vid_buffer, list);
1466 vb2_set_plane_payload(&buf->vb.vb2_buf, 0,
1467 *((u32 *)arg));
1468 }
1469 fimc_capture_irq_handler(fimc, 1);
1470 fimc_deactivate_capture(fimc);
1471 spin_unlock_irqrestore(&fimc->slock, irq_flags);
1472 }
1473 spin_unlock_irqrestore(&fmd->slock, flags);
1474 }
1475
1476 static int fimc_subdev_enum_mbus_code(struct v4l2_subdev *sd,
1477 struct v4l2_subdev_pad_config *cfg,
1478 struct v4l2_subdev_mbus_code_enum *code)
1479 {
1480 struct fimc_fmt *fmt;
1481
1482 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, code->index);
1483 if (!fmt)
1484 return -EINVAL;
1485 code->code = fmt->mbus_code;
1486 return 0;
1487 }
1488
1489 static int fimc_subdev_get_fmt(struct v4l2_subdev *sd,
1490 struct v4l2_subdev_pad_config *cfg,
1491 struct v4l2_subdev_format *fmt)
1492 {
1493 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1494 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1495 struct fimc_frame *ff = &ctx->s_frame;
1496 struct v4l2_mbus_framefmt *mf;
1497
1498 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1499 mf = v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
1500 fmt->format = *mf;
1501 return 0;
1502 }
1503
1504 mf = &fmt->format;
1505 mutex_lock(&fimc->lock);
1506
1507 switch (fmt->pad) {
1508 case FIMC_SD_PAD_SOURCE:
1509 if (!WARN_ON(ff->fmt == NULL))
1510 mf->code = ff->fmt->mbus_code;
1511 /* Sink pads crop rectangle size */
1512 mf->width = ff->width;
1513 mf->height = ff->height;
1514 break;
1515 case FIMC_SD_PAD_SINK_FIFO:
1516 *mf = fimc->vid_cap.wb_fmt;
1517 break;
1518 case FIMC_SD_PAD_SINK_CAM:
1519 default:
1520 *mf = fimc->vid_cap.ci_fmt;
1521 break;
1522 }
1523
1524 mutex_unlock(&fimc->lock);
1525 mf->colorspace = V4L2_COLORSPACE_JPEG;
1526
1527 return 0;
1528 }
1529
1530 static int fimc_subdev_set_fmt(struct v4l2_subdev *sd,
1531 struct v4l2_subdev_pad_config *cfg,
1532 struct v4l2_subdev_format *fmt)
1533 {
1534 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1535 struct v4l2_mbus_framefmt *mf = &fmt->format;
1536 struct fimc_vid_cap *vc = &fimc->vid_cap;
1537 struct fimc_ctx *ctx = vc->ctx;
1538 struct fimc_frame *ff;
1539 struct fimc_fmt *ffmt;
1540
1541 dbg("pad%d: code: 0x%x, %dx%d",
1542 fmt->pad, mf->code, mf->width, mf->height);
1543
1544 if (fmt->pad == FIMC_SD_PAD_SOURCE && vb2_is_busy(&vc->vbq))
1545 return -EBUSY;
1546
1547 mutex_lock(&fimc->lock);
1548 ffmt = fimc_capture_try_format(ctx, &mf->width, &mf->height,
1549 &mf->code, NULL, fmt->pad);
1550 mutex_unlock(&fimc->lock);
1551 mf->colorspace = V4L2_COLORSPACE_JPEG;
1552
1553 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1554 mf = v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
1555 *mf = fmt->format;
1556 return 0;
1557 }
1558 /* There must be a bug in the driver if this happens */
1559 if (WARN_ON(ffmt == NULL))
1560 return -EINVAL;
1561
1562 /* Update RGB Alpha control state and value range */
1563 fimc_alpha_ctrl_update(ctx);
1564
1565 fimc_capture_mark_jpeg_xfer(ctx, ffmt->color);
1566 if (fmt->pad == FIMC_SD_PAD_SOURCE) {
1567 ff = &ctx->d_frame;
1568 /* Sink pads crop rectangle size */
1569 mf->width = ctx->s_frame.width;
1570 mf->height = ctx->s_frame.height;
1571 } else {
1572 ff = &ctx->s_frame;
1573 }
1574
1575 mutex_lock(&fimc->lock);
1576 set_frame_bounds(ff, mf->width, mf->height);
1577
1578 if (fmt->pad == FIMC_SD_PAD_SINK_FIFO)
1579 vc->wb_fmt = *mf;
1580 else if (fmt->pad == FIMC_SD_PAD_SINK_CAM)
1581 vc->ci_fmt = *mf;
1582
1583 ff->fmt = ffmt;
1584
1585 /* Reset the crop rectangle if required. */
1586 if (!(fmt->pad == FIMC_SD_PAD_SOURCE && (ctx->state & FIMC_COMPOSE)))
1587 set_frame_crop(ff, 0, 0, mf->width, mf->height);
1588
1589 if (fmt->pad != FIMC_SD_PAD_SOURCE)
1590 ctx->state &= ~FIMC_COMPOSE;
1591
1592 mutex_unlock(&fimc->lock);
1593 return 0;
1594 }
1595
1596 static int fimc_subdev_get_selection(struct v4l2_subdev *sd,
1597 struct v4l2_subdev_pad_config *cfg,
1598 struct v4l2_subdev_selection *sel)
1599 {
1600 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1601 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1602 struct fimc_frame *f = &ctx->s_frame;
1603 struct v4l2_rect *r = &sel->r;
1604 struct v4l2_rect *try_sel;
1605
1606 if (sel->pad == FIMC_SD_PAD_SOURCE)
1607 return -EINVAL;
1608
1609 mutex_lock(&fimc->lock);
1610
1611 switch (sel->target) {
1612 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1613 f = &ctx->d_frame;
1614 /* fall through */
1615 case V4L2_SEL_TGT_CROP_BOUNDS:
1616 r->width = f->o_width;
1617 r->height = f->o_height;
1618 r->left = 0;
1619 r->top = 0;
1620 mutex_unlock(&fimc->lock);
1621 return 0;
1622
1623 case V4L2_SEL_TGT_CROP:
1624 try_sel = v4l2_subdev_get_try_crop(sd, cfg, sel->pad);
1625 break;
1626 case V4L2_SEL_TGT_COMPOSE:
1627 try_sel = v4l2_subdev_get_try_compose(sd, cfg, sel->pad);
1628 f = &ctx->d_frame;
1629 break;
1630 default:
1631 mutex_unlock(&fimc->lock);
1632 return -EINVAL;
1633 }
1634
1635 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1636 sel->r = *try_sel;
1637 } else {
1638 r->left = f->offs_h;
1639 r->top = f->offs_v;
1640 r->width = f->width;
1641 r->height = f->height;
1642 }
1643
1644 dbg("target %#x: l:%d, t:%d, %dx%d, f_w: %d, f_h: %d",
1645 sel->pad, r->left, r->top, r->width, r->height,
1646 f->f_width, f->f_height);
1647
1648 mutex_unlock(&fimc->lock);
1649 return 0;
1650 }
1651
1652 static int fimc_subdev_set_selection(struct v4l2_subdev *sd,
1653 struct v4l2_subdev_pad_config *cfg,
1654 struct v4l2_subdev_selection *sel)
1655 {
1656 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1657 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1658 struct fimc_frame *f = &ctx->s_frame;
1659 struct v4l2_rect *r = &sel->r;
1660 struct v4l2_rect *try_sel;
1661 unsigned long flags;
1662
1663 if (sel->pad == FIMC_SD_PAD_SOURCE)
1664 return -EINVAL;
1665
1666 mutex_lock(&fimc->lock);
1667 fimc_capture_try_selection(ctx, r, V4L2_SEL_TGT_CROP);
1668
1669 switch (sel->target) {
1670 case V4L2_SEL_TGT_CROP:
1671 try_sel = v4l2_subdev_get_try_crop(sd, cfg, sel->pad);
1672 break;
1673 case V4L2_SEL_TGT_COMPOSE:
1674 try_sel = v4l2_subdev_get_try_compose(sd, cfg, sel->pad);
1675 f = &ctx->d_frame;
1676 break;
1677 default:
1678 mutex_unlock(&fimc->lock);
1679 return -EINVAL;
1680 }
1681
1682 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1683 *try_sel = sel->r;
1684 } else {
1685 spin_lock_irqsave(&fimc->slock, flags);
1686 set_frame_crop(f, r->left, r->top, r->width, r->height);
1687 set_bit(ST_CAPT_APPLY_CFG, &fimc->state);
1688 if (sel->target == V4L2_SEL_TGT_COMPOSE)
1689 ctx->state |= FIMC_COMPOSE;
1690 spin_unlock_irqrestore(&fimc->slock, flags);
1691 }
1692
1693 dbg("target %#x: (%d,%d)/%dx%d", sel->target, r->left, r->top,
1694 r->width, r->height);
1695
1696 mutex_unlock(&fimc->lock);
1697 return 0;
1698 }
1699
1700 static const struct v4l2_subdev_pad_ops fimc_subdev_pad_ops = {
1701 .enum_mbus_code = fimc_subdev_enum_mbus_code,
1702 .get_selection = fimc_subdev_get_selection,
1703 .set_selection = fimc_subdev_set_selection,
1704 .get_fmt = fimc_subdev_get_fmt,
1705 .set_fmt = fimc_subdev_set_fmt,
1706 };
1707
1708 static const struct v4l2_subdev_ops fimc_subdev_ops = {
1709 .pad = &fimc_subdev_pad_ops,
1710 };
1711
1712 /* Set default format at the sensor and host interface */
1713 static int fimc_capture_set_default_format(struct fimc_dev *fimc)
1714 {
1715 struct v4l2_format fmt = {
1716 .type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
1717 .fmt.pix_mp = {
1718 .width = FIMC_DEFAULT_WIDTH,
1719 .height = FIMC_DEFAULT_HEIGHT,
1720 .pixelformat = V4L2_PIX_FMT_YUYV,
1721 .field = V4L2_FIELD_NONE,
1722 .colorspace = V4L2_COLORSPACE_JPEG,
1723 },
1724 };
1725
1726 return __fimc_capture_set_format(fimc, &fmt);
1727 }
1728
1729 /* fimc->lock must be already initialized */
1730 static int fimc_register_capture_device(struct fimc_dev *fimc,
1731 struct v4l2_device *v4l2_dev)
1732 {
1733 struct video_device *vfd = &fimc->vid_cap.ve.vdev;
1734 struct vb2_queue *q = &fimc->vid_cap.vbq;
1735 struct fimc_ctx *ctx;
1736 struct fimc_vid_cap *vid_cap;
1737 struct fimc_fmt *fmt;
1738 int ret = -ENOMEM;
1739
1740 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
1741 if (!ctx)
1742 return -ENOMEM;
1743
1744 ctx->fimc_dev = fimc;
1745 ctx->in_path = FIMC_IO_CAMERA;
1746 ctx->out_path = FIMC_IO_DMA;
1747 ctx->state = FIMC_CTX_CAP;
1748 ctx->s_frame.fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, 0);
1749 ctx->d_frame.fmt = ctx->s_frame.fmt;
1750
1751 memset(vfd, 0, sizeof(*vfd));
1752 snprintf(vfd->name, sizeof(vfd->name), "fimc.%d.capture", fimc->id);
1753
1754 vfd->fops = &fimc_capture_fops;
1755 vfd->ioctl_ops = &fimc_capture_ioctl_ops;
1756 vfd->v4l2_dev = v4l2_dev;
1757 vfd->minor = -1;
1758 vfd->release = video_device_release_empty;
1759 vfd->queue = q;
1760 vfd->lock = &fimc->lock;
1761 vfd->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_CAPTURE_MPLANE;
1762
1763 video_set_drvdata(vfd, fimc);
1764 vid_cap = &fimc->vid_cap;
1765 vid_cap->active_buf_cnt = 0;
1766 vid_cap->reqbufs_count = 0;
1767 vid_cap->ctx = ctx;
1768
1769 INIT_LIST_HEAD(&vid_cap->pending_buf_q);
1770 INIT_LIST_HEAD(&vid_cap->active_buf_q);
1771
1772 memset(q, 0, sizeof(*q));
1773 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1774 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1775 q->drv_priv = ctx;
1776 q->ops = &fimc_capture_qops;
1777 q->mem_ops = &vb2_dma_contig_memops;
1778 q->buf_struct_size = sizeof(struct fimc_vid_buffer);
1779 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1780 q->lock = &fimc->lock;
1781 q->dev = &fimc->pdev->dev;
1782
1783 ret = vb2_queue_init(q);
1784 if (ret)
1785 goto err_free_ctx;
1786
1787 /* Default format configuration */
1788 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, 0);
1789 vid_cap->ci_fmt.width = FIMC_DEFAULT_WIDTH;
1790 vid_cap->ci_fmt.height = FIMC_DEFAULT_HEIGHT;
1791 vid_cap->ci_fmt.code = fmt->mbus_code;
1792
1793 ctx->s_frame.width = FIMC_DEFAULT_WIDTH;
1794 ctx->s_frame.height = FIMC_DEFAULT_HEIGHT;
1795 ctx->s_frame.fmt = fmt;
1796
1797 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_WRITEBACK, 0);
1798 vid_cap->wb_fmt = vid_cap->ci_fmt;
1799 vid_cap->wb_fmt.code = fmt->mbus_code;
1800
1801 vid_cap->vd_pad.flags = MEDIA_PAD_FL_SINK;
1802 vfd->entity.function = MEDIA_ENT_F_PROC_VIDEO_SCALER;
1803 ret = media_entity_pads_init(&vfd->entity, 1, &vid_cap->vd_pad);
1804 if (ret)
1805 goto err_free_ctx;
1806
1807 ret = fimc_ctrls_create(ctx);
1808 if (ret)
1809 goto err_me_cleanup;
1810
1811 ret = video_register_device(vfd, VFL_TYPE_VIDEO, -1);
1812 if (ret)
1813 goto err_ctrl_free;
1814
1815 v4l2_info(v4l2_dev, "Registered %s as /dev/%s\n",
1816 vfd->name, video_device_node_name(vfd));
1817
1818 vfd->ctrl_handler = &ctx->ctrls.handler;
1819 return 0;
1820
1821 err_ctrl_free:
1822 fimc_ctrls_delete(ctx);
1823 err_me_cleanup:
1824 media_entity_cleanup(&vfd->entity);
1825 err_free_ctx:
1826 kfree(ctx);
1827 return ret;
1828 }
1829
1830 static int fimc_capture_subdev_registered(struct v4l2_subdev *sd)
1831 {
1832 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1833 int ret;
1834
1835 if (fimc == NULL)
1836 return -ENXIO;
1837
1838 ret = fimc_register_m2m_device(fimc, sd->v4l2_dev);
1839 if (ret)
1840 return ret;
1841
1842 fimc->vid_cap.ve.pipe = v4l2_get_subdev_hostdata(sd);
1843
1844 ret = fimc_register_capture_device(fimc, sd->v4l2_dev);
1845 if (ret) {
1846 fimc_unregister_m2m_device(fimc);
1847 fimc->vid_cap.ve.pipe = NULL;
1848 }
1849
1850 return ret;
1851 }
1852
1853 static void fimc_capture_subdev_unregistered(struct v4l2_subdev *sd)
1854 {
1855 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1856 struct video_device *vdev;
1857
1858 if (fimc == NULL)
1859 return;
1860
1861 mutex_lock(&fimc->lock);
1862
1863 fimc_unregister_m2m_device(fimc);
1864 vdev = &fimc->vid_cap.ve.vdev;
1865
1866 if (video_is_registered(vdev)) {
1867 video_unregister_device(vdev);
1868 media_entity_cleanup(&vdev->entity);
1869 fimc_ctrls_delete(fimc->vid_cap.ctx);
1870 fimc->vid_cap.ve.pipe = NULL;
1871 }
1872 kfree(fimc->vid_cap.ctx);
1873 fimc->vid_cap.ctx = NULL;
1874
1875 mutex_unlock(&fimc->lock);
1876 }
1877
1878 static const struct v4l2_subdev_internal_ops fimc_capture_sd_internal_ops = {
1879 .registered = fimc_capture_subdev_registered,
1880 .unregistered = fimc_capture_subdev_unregistered,
1881 };
1882
1883 int fimc_initialize_capture_subdev(struct fimc_dev *fimc)
1884 {
1885 struct v4l2_subdev *sd = &fimc->vid_cap.subdev;
1886 int ret;
1887
1888 v4l2_subdev_init(sd, &fimc_subdev_ops);
1889 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1890 snprintf(sd->name, sizeof(sd->name), "FIMC.%d", fimc->id);
1891
1892 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK_CAM].flags = MEDIA_PAD_FL_SINK;
1893 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK_FIFO].flags = MEDIA_PAD_FL_SINK;
1894 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
1895 ret = media_entity_pads_init(&sd->entity, FIMC_SD_PADS_NUM,
1896 fimc->vid_cap.sd_pads);
1897 if (ret)
1898 return ret;
1899
1900 sd->entity.ops = &fimc_sd_media_ops;
1901 sd->internal_ops = &fimc_capture_sd_internal_ops;
1902 v4l2_set_subdevdata(sd, fimc);
1903 return 0;
1904 }
1905
1906 void fimc_unregister_capture_subdev(struct fimc_dev *fimc)
1907 {
1908 struct v4l2_subdev *sd = &fimc->vid_cap.subdev;
1909
1910 v4l2_device_unregister_subdev(sd);
1911 media_entity_cleanup(&sd->entity);
1912 v4l2_set_subdevdata(sd, NULL);
1913 }
Linux with added FPC-III support