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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
[cris-mirror.git] / drivers / media / platform / exynos4-is / fimc-capture.c
blobed9302caa00484c55e4e75474acd204fa77df404
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-v4l2.h>
28 #include <media/videobuf2-dma-contig.h>
29
30 #include "common.h"
31 #include "fimc-core.h"
32 #include "fimc-reg.h"
33 #include "media-dev.h"
34
35 static int fimc_capture_hw_init(struct fimc_dev *fimc)
36 {
37 struct fimc_source_info *si = &fimc->vid_cap.source_config;
38 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
39 int ret;
40 unsigned long flags;
41
42 if (ctx == NULL || ctx->s_frame.fmt == NULL)
43 return -EINVAL;
44
45 if (si->fimc_bus_type == FIMC_BUS_TYPE_ISP_WRITEBACK) {
46 ret = fimc_hw_camblk_cfg_writeback(fimc);
47 if (ret < 0)
48 return ret;
49 }
50
51 spin_lock_irqsave(&fimc->slock, flags);
52 fimc_prepare_dma_offset(ctx, &ctx->d_frame);
53 fimc_set_yuv_order(ctx);
54
55 fimc_hw_set_camera_polarity(fimc, si);
56 fimc_hw_set_camera_type(fimc, si);
57 fimc_hw_set_camera_source(fimc, si);
58 fimc_hw_set_camera_offset(fimc, &ctx->s_frame);
59
60 ret = fimc_set_scaler_info(ctx);
61 if (!ret) {
62 fimc_hw_set_input_path(ctx);
63 fimc_hw_set_prescaler(ctx);
64 fimc_hw_set_mainscaler(ctx);
65 fimc_hw_set_target_format(ctx);
66 fimc_hw_set_rotation(ctx);
67 fimc_hw_set_effect(ctx);
68 fimc_hw_set_output_path(ctx);
69 fimc_hw_set_out_dma(ctx);
70 if (fimc->drv_data->alpha_color)
71 fimc_hw_set_rgb_alpha(ctx);
72 clear_bit(ST_CAPT_APPLY_CFG, &fimc->state);
73 }
74 spin_unlock_irqrestore(&fimc->slock, flags);
75 return ret;
76 }
77
78 /*
79 * Reinitialize the driver so it is ready to start the streaming again.
80 * Set fimc->state to indicate stream off and the hardware shut down state.
81 * If not suspending (@suspend is false), return any buffers to videobuf2.
82 * Otherwise put any owned buffers onto the pending buffers queue, so they
83 * can be re-spun when the device is being resumed. Also perform FIMC
84 * software reset and disable streaming on the whole pipeline if required.
85 */
86 static int fimc_capture_state_cleanup(struct fimc_dev *fimc, bool suspend)
87 {
88 struct fimc_vid_cap *cap = &fimc->vid_cap;
89 struct fimc_vid_buffer *buf;
90 unsigned long flags;
91 bool streaming;
92
93 spin_lock_irqsave(&fimc->slock, flags);
94 streaming = fimc->state & (1 << ST_CAPT_ISP_STREAM);
95
96 fimc->state &= ~(1 << ST_CAPT_RUN | 1 << ST_CAPT_SHUT |
97 1 << ST_CAPT_STREAM | 1 << ST_CAPT_ISP_STREAM);
98 if (suspend)
99 fimc->state |= (1 << ST_CAPT_SUSPENDED);
100 else
101 fimc->state &= ~(1 << ST_CAPT_PEND | 1 << ST_CAPT_SUSPENDED);
102
103 /* Release unused buffers */
104 while (!suspend && !list_empty(&cap->pending_buf_q)) {
105 buf = fimc_pending_queue_pop(cap);
106 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
107 }
108 /* If suspending put unused buffers onto pending queue */
109 while (!list_empty(&cap->active_buf_q)) {
110 buf = fimc_active_queue_pop(cap);
111 if (suspend)
112 fimc_pending_queue_add(cap, buf);
113 else
114 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
115 }
116
117 fimc_hw_reset(fimc);
118 cap->buf_index = 0;
119
120 spin_unlock_irqrestore(&fimc->slock, flags);
121
122 if (streaming)
123 return fimc_pipeline_call(&cap->ve, set_stream, 0);
124 else
125 return 0;
126 }
127
128 static int fimc_stop_capture(struct fimc_dev *fimc, bool suspend)
129 {
130 unsigned long flags;
131
132 if (!fimc_capture_active(fimc))
133 return 0;
134
135 spin_lock_irqsave(&fimc->slock, flags);
136 set_bit(ST_CAPT_SHUT, &fimc->state);
137 fimc_deactivate_capture(fimc);
138 spin_unlock_irqrestore(&fimc->slock, flags);
139
140 wait_event_timeout(fimc->irq_queue,
141 !test_bit(ST_CAPT_SHUT, &fimc->state),
142 (2*HZ/10)); /* 200 ms */
143
144 return fimc_capture_state_cleanup(fimc, suspend);
145 }
146
147 /**
148 * fimc_capture_config_update - apply the camera interface configuration
149 * @ctx: FIMC capture context
150 *
151 * To be called from within the interrupt handler with fimc.slock
152 * spinlock held. It updates the camera pixel crop, rotation and
153 * image flip in H/W.
154 */
155 static int fimc_capture_config_update(struct fimc_ctx *ctx)
156 {
157 struct fimc_dev *fimc = ctx->fimc_dev;
158 int ret;
159
160 fimc_hw_set_camera_offset(fimc, &ctx->s_frame);
161
162 ret = fimc_set_scaler_info(ctx);
163 if (ret)
164 return ret;
165
166 fimc_hw_set_prescaler(ctx);
167 fimc_hw_set_mainscaler(ctx);
168 fimc_hw_set_target_format(ctx);
169 fimc_hw_set_rotation(ctx);
170 fimc_hw_set_effect(ctx);
171 fimc_prepare_dma_offset(ctx, &ctx->d_frame);
172 fimc_hw_set_out_dma(ctx);
173 if (fimc->drv_data->alpha_color)
174 fimc_hw_set_rgb_alpha(ctx);
175
176 clear_bit(ST_CAPT_APPLY_CFG, &fimc->state);
177 return ret;
178 }
179
180 void fimc_capture_irq_handler(struct fimc_dev *fimc, int deq_buf)
181 {
182 struct fimc_vid_cap *cap = &fimc->vid_cap;
183 struct fimc_pipeline *p = to_fimc_pipeline(cap->ve.pipe);
184 struct v4l2_subdev *csis = p->subdevs[IDX_CSIS];
185 struct fimc_frame *f = &cap->ctx->d_frame;
186 struct fimc_vid_buffer *v_buf;
187
188 if (test_and_clear_bit(ST_CAPT_SHUT, &fimc->state)) {
189 wake_up(&fimc->irq_queue);
190 goto done;
191 }
192
193 if (!list_empty(&cap->active_buf_q) &&
194 test_bit(ST_CAPT_RUN, &fimc->state) && deq_buf) {
195 v_buf = fimc_active_queue_pop(cap);
196
197 v_buf->vb.vb2_buf.timestamp = ktime_get_ns();
198 v_buf->vb.sequence = cap->frame_count++;
199
200 vb2_buffer_done(&v_buf->vb.vb2_buf, VB2_BUF_STATE_DONE);
201 }
202
203 if (!list_empty(&cap->pending_buf_q)) {
204
205 v_buf = fimc_pending_queue_pop(cap);
206 fimc_hw_set_output_addr(fimc, &v_buf->paddr, cap->buf_index);
207 v_buf->index = cap->buf_index;
208
209 /* Move the buffer to the capture active queue */
210 fimc_active_queue_add(cap, v_buf);
211
212 dbg("next frame: %d, done frame: %d",
213 fimc_hw_get_frame_index(fimc), v_buf->index);
214
215 if (++cap->buf_index >= FIMC_MAX_OUT_BUFS)
216 cap->buf_index = 0;
217 }
218 /*
219 * Set up a buffer at MIPI-CSIS if current image format
220 * requires the frame embedded data capture.
221 */
222 if (f->fmt->mdataplanes && !list_empty(&cap->active_buf_q)) {
223 unsigned int plane = ffs(f->fmt->mdataplanes) - 1;
224 unsigned int size = f->payload[plane];
225 s32 index = fimc_hw_get_frame_index(fimc);
226 void *vaddr;
227
228 list_for_each_entry(v_buf, &cap->active_buf_q, list) {
229 if (v_buf->index != index)
230 continue;
231 vaddr = vb2_plane_vaddr(&v_buf->vb.vb2_buf, plane);
232 v4l2_subdev_call(csis, video, s_rx_buffer,
233 vaddr, &size);
234 break;
235 }
236 }
237
238 if (cap->active_buf_cnt == 0) {
239 if (deq_buf)
240 clear_bit(ST_CAPT_RUN, &fimc->state);
241
242 if (++cap->buf_index >= FIMC_MAX_OUT_BUFS)
243 cap->buf_index = 0;
244 } else {
245 set_bit(ST_CAPT_RUN, &fimc->state);
246 }
247
248 if (test_bit(ST_CAPT_APPLY_CFG, &fimc->state))
249 fimc_capture_config_update(cap->ctx);
250 done:
251 if (cap->active_buf_cnt == 1) {
252 fimc_deactivate_capture(fimc);
253 clear_bit(ST_CAPT_STREAM, &fimc->state);
254 }
255
256 dbg("frame: %d, active_buf_cnt: %d",
257 fimc_hw_get_frame_index(fimc), cap->active_buf_cnt);
258 }
259
260
261 static int start_streaming(struct vb2_queue *q, unsigned int count)
262 {
263 struct fimc_ctx *ctx = q->drv_priv;
264 struct fimc_dev *fimc = ctx->fimc_dev;
265 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
266 int min_bufs;
267 int ret;
268
269 vid_cap->frame_count = 0;
270
271 ret = fimc_capture_hw_init(fimc);
272 if (ret) {
273 fimc_capture_state_cleanup(fimc, false);
274 return ret;
275 }
276
277 set_bit(ST_CAPT_PEND, &fimc->state);
278
279 min_bufs = fimc->vid_cap.reqbufs_count > 1 ? 2 : 1;
280
281 if (vid_cap->active_buf_cnt >= min_bufs &&
282 !test_and_set_bit(ST_CAPT_STREAM, &fimc->state)) {
283 fimc_activate_capture(ctx);
284
285 if (!test_and_set_bit(ST_CAPT_ISP_STREAM, &fimc->state))
286 return fimc_pipeline_call(&vid_cap->ve, set_stream, 1);
287 }
288
289 return 0;
290 }
291
292 static void stop_streaming(struct vb2_queue *q)
293 {
294 struct fimc_ctx *ctx = q->drv_priv;
295 struct fimc_dev *fimc = ctx->fimc_dev;
296
297 if (!fimc_capture_active(fimc))
298 return;
299
300 fimc_stop_capture(fimc, false);
301 }
302
303 int fimc_capture_suspend(struct fimc_dev *fimc)
304 {
305 bool suspend = fimc_capture_busy(fimc);
306
307 int ret = fimc_stop_capture(fimc, suspend);
308 if (ret)
309 return ret;
310 return fimc_pipeline_call(&fimc->vid_cap.ve, close);
311 }
312
313 static void buffer_queue(struct vb2_buffer *vb);
314
315 int fimc_capture_resume(struct fimc_dev *fimc)
316 {
317 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
318 struct exynos_video_entity *ve = &vid_cap->ve;
319 struct fimc_vid_buffer *buf;
320 int i;
321
322 if (!test_and_clear_bit(ST_CAPT_SUSPENDED, &fimc->state))
323 return 0;
324
325 INIT_LIST_HEAD(&fimc->vid_cap.active_buf_q);
326 vid_cap->buf_index = 0;
327 fimc_pipeline_call(ve, open, &ve->vdev.entity, false);
328 fimc_capture_hw_init(fimc);
329
330 clear_bit(ST_CAPT_SUSPENDED, &fimc->state);
331
332 for (i = 0; i < vid_cap->reqbufs_count; i++) {
333 if (list_empty(&vid_cap->pending_buf_q))
334 break;
335 buf = fimc_pending_queue_pop(vid_cap);
336 buffer_queue(&buf->vb.vb2_buf);
337 }
338 return 0;
339
340 }
341
342 static int queue_setup(struct vb2_queue *vq,
343 unsigned int *num_buffers, unsigned int *num_planes,
344 unsigned int sizes[], struct device *alloc_devs[])
345 {
346 struct fimc_ctx *ctx = vq->drv_priv;
347 struct fimc_frame *frame = &ctx->d_frame;
348 struct fimc_fmt *fmt = frame->fmt;
349 unsigned long wh = frame->f_width * frame->f_height;
350 int i;
351
352 if (fmt == NULL)
353 return -EINVAL;
354
355 if (*num_planes) {
356 if (*num_planes != fmt->memplanes)
357 return -EINVAL;
358 for (i = 0; i < *num_planes; i++)
359 if (sizes[i] < (wh * fmt->depth[i]) / 8)
360 return -EINVAL;
361 return 0;
362 }
363
364 *num_planes = fmt->memplanes;
365
366 for (i = 0; i < fmt->memplanes; i++) {
367 unsigned int size = (wh * fmt->depth[i]) / 8;
368
369 if (fimc_fmt_is_user_defined(fmt->color))
370 sizes[i] = frame->payload[i];
371 else
372 sizes[i] = max_t(u32, size, frame->payload[i]);
373 }
374
375 return 0;
376 }
377
378 static int buffer_prepare(struct vb2_buffer *vb)
379 {
380 struct vb2_queue *vq = vb->vb2_queue;
381 struct fimc_ctx *ctx = vq->drv_priv;
382 int i;
383
384 if (ctx->d_frame.fmt == NULL)
385 return -EINVAL;
386
387 for (i = 0; i < ctx->d_frame.fmt->memplanes; i++) {
388 unsigned long size = ctx->d_frame.payload[i];
389
390 if (vb2_plane_size(vb, i) < size) {
391 v4l2_err(&ctx->fimc_dev->vid_cap.ve.vdev,
392 "User buffer too small (%ld < %ld)\n",
393 vb2_plane_size(vb, i), size);
394 return -EINVAL;
395 }
396 vb2_set_plane_payload(vb, i, size);
397 }
398
399 return 0;
400 }
401
402 static void buffer_queue(struct vb2_buffer *vb)
403 {
404 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
405 struct fimc_vid_buffer *buf
406 = container_of(vbuf, struct fimc_vid_buffer, vb);
407 struct fimc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
408 struct fimc_dev *fimc = ctx->fimc_dev;
409 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
410 struct exynos_video_entity *ve = &vid_cap->ve;
411 unsigned long flags;
412 int min_bufs;
413
414 spin_lock_irqsave(&fimc->slock, flags);
415 fimc_prepare_addr(ctx, &buf->vb.vb2_buf, &ctx->d_frame, &buf->paddr);
416
417 if (!test_bit(ST_CAPT_SUSPENDED, &fimc->state) &&
418 !test_bit(ST_CAPT_STREAM, &fimc->state) &&
419 vid_cap->active_buf_cnt < FIMC_MAX_OUT_BUFS) {
420 /* Setup the buffer directly for processing. */
421 int buf_id = (vid_cap->reqbufs_count == 1) ? -1 :
422 vid_cap->buf_index;
423
424 fimc_hw_set_output_addr(fimc, &buf->paddr, buf_id);
425 buf->index = vid_cap->buf_index;
426 fimc_active_queue_add(vid_cap, buf);
427
428 if (++vid_cap->buf_index >= FIMC_MAX_OUT_BUFS)
429 vid_cap->buf_index = 0;
430 } else {
431 fimc_pending_queue_add(vid_cap, buf);
432 }
433
434 min_bufs = vid_cap->reqbufs_count > 1 ? 2 : 1;
435
436
437 if (vb2_is_streaming(&vid_cap->vbq) &&
438 vid_cap->active_buf_cnt >= min_bufs &&
439 !test_and_set_bit(ST_CAPT_STREAM, &fimc->state)) {
440 int ret;
441
442 fimc_activate_capture(ctx);
443 spin_unlock_irqrestore(&fimc->slock, flags);
444
445 if (test_and_set_bit(ST_CAPT_ISP_STREAM, &fimc->state))
446 return;
447
448 ret = fimc_pipeline_call(ve, set_stream, 1);
449 if (ret < 0)
450 v4l2_err(&ve->vdev, "stream on failed: %d\n", ret);
451 return;
452 }
453 spin_unlock_irqrestore(&fimc->slock, flags);
454 }
455
456 static const struct vb2_ops fimc_capture_qops = {
457 .queue_setup = queue_setup,
458 .buf_prepare = buffer_prepare,
459 .buf_queue = buffer_queue,
460 .wait_prepare = vb2_ops_wait_prepare,
461 .wait_finish = vb2_ops_wait_finish,
462 .start_streaming = start_streaming,
463 .stop_streaming = stop_streaming,
464 };
465
466 static int fimc_capture_set_default_format(struct fimc_dev *fimc);
467
468 static int fimc_capture_open(struct file *file)
469 {
470 struct fimc_dev *fimc = video_drvdata(file);
471 struct fimc_vid_cap *vc = &fimc->vid_cap;
472 struct exynos_video_entity *ve = &vc->ve;
473 int ret = -EBUSY;
474
475 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
476
477 mutex_lock(&fimc->lock);
478
479 if (fimc_m2m_active(fimc))
480 goto unlock;
481
482 set_bit(ST_CAPT_BUSY, &fimc->state);
483 ret = pm_runtime_get_sync(&fimc->pdev->dev);
484 if (ret < 0)
485 goto unlock;
486
487 ret = v4l2_fh_open(file);
488 if (ret) {
489 pm_runtime_put_sync(&fimc->pdev->dev);
490 goto unlock;
491 }
492
493 if (v4l2_fh_is_singular_file(file)) {
494 fimc_md_graph_lock(ve);
495
496 ret = fimc_pipeline_call(ve, open, &ve->vdev.entity, true);
497
498 if (ret == 0 && vc->user_subdev_api && vc->inh_sensor_ctrls) {
499 /*
500 * Recreate controls of the the video node to drop
501 * any controls inherited from the sensor subdev.
502 */
503 fimc_ctrls_delete(vc->ctx);
504
505 ret = fimc_ctrls_create(vc->ctx);
506 if (ret == 0)
507 vc->inh_sensor_ctrls = false;
508 }
509 if (ret == 0)
510 ve->vdev.entity.use_count++;
511
512 fimc_md_graph_unlock(ve);
513
514 if (ret == 0)
515 ret = fimc_capture_set_default_format(fimc);
516
517 if (ret < 0) {
518 clear_bit(ST_CAPT_BUSY, &fimc->state);
519 pm_runtime_put_sync(&fimc->pdev->dev);
520 v4l2_fh_release(file);
521 }
522 }
523 unlock:
524 mutex_unlock(&fimc->lock);
525 return ret;
526 }
527
528 static int fimc_capture_release(struct file *file)
529 {
530 struct fimc_dev *fimc = video_drvdata(file);
531 struct fimc_vid_cap *vc = &fimc->vid_cap;
532 bool close = v4l2_fh_is_singular_file(file);
533 int ret;
534
535 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
536
537 mutex_lock(&fimc->lock);
538
539 if (close && vc->streaming) {
540 media_pipeline_stop(&vc->ve.vdev.entity);
541 vc->streaming = false;
542 }
543
544 ret = _vb2_fop_release(file, NULL);
545
546 if (close) {
547 clear_bit(ST_CAPT_BUSY, &fimc->state);
548 fimc_pipeline_call(&vc->ve, close);
549 clear_bit(ST_CAPT_SUSPENDED, &fimc->state);
550
551 fimc_md_graph_lock(&vc->ve);
552 vc->ve.vdev.entity.use_count--;
553 fimc_md_graph_unlock(&vc->ve);
554 }
555
556 pm_runtime_put_sync(&fimc->pdev->dev);
557 mutex_unlock(&fimc->lock);
558
559 return ret;
560 }
561
562 static const struct v4l2_file_operations fimc_capture_fops = {
563 .owner = THIS_MODULE,
564 .open = fimc_capture_open,
565 .release = fimc_capture_release,
566 .poll = vb2_fop_poll,
567 .unlocked_ioctl = video_ioctl2,
568 .mmap = vb2_fop_mmap,
569 };
570
571 /*
572 * Format and crop negotiation helpers
573 */
574
575 static struct fimc_fmt *fimc_capture_try_format(struct fimc_ctx *ctx,
576 u32 *width, u32 *height,
577 u32 *code, u32 *fourcc, int pad)
578 {
579 bool rotation = ctx->rotation == 90 || ctx->rotation == 270;
580 struct fimc_dev *fimc = ctx->fimc_dev;
581 const struct fimc_variant *var = fimc->variant;
582 const struct fimc_pix_limit *pl = var->pix_limit;
583 struct fimc_frame *dst = &ctx->d_frame;
584 u32 depth, min_w, max_w, min_h, align_h = 3;
585 u32 mask = FMT_FLAGS_CAM;
586 struct fimc_fmt *ffmt;
587
588 /* Conversion from/to JPEG or User Defined format is not supported */
589 if (code && ctx->s_frame.fmt && pad == FIMC_SD_PAD_SOURCE &&
590 fimc_fmt_is_user_defined(ctx->s_frame.fmt->color))
591 *code = ctx->s_frame.fmt->mbus_code;
592
593 if (fourcc && *fourcc != V4L2_PIX_FMT_JPEG && pad == FIMC_SD_PAD_SOURCE)
594 mask |= FMT_FLAGS_M2M;
595
596 if (pad == FIMC_SD_PAD_SINK_FIFO)
597 mask = FMT_FLAGS_WRITEBACK;
598
599 ffmt = fimc_find_format(fourcc, code, mask, 0);
600 if (WARN_ON(!ffmt))
601 return NULL;
602
603 if (code)
604 *code = ffmt->mbus_code;
605 if (fourcc)
606 *fourcc = ffmt->fourcc;
607
608 if (pad != FIMC_SD_PAD_SOURCE) {
609 max_w = fimc_fmt_is_user_defined(ffmt->color) ?
610 pl->scaler_dis_w : pl->scaler_en_w;
611 /* Apply the camera input interface pixel constraints */
612 v4l_bound_align_image(width, max_t(u32, *width, 32), max_w, 4,
613 height, max_t(u32, *height, 32),
614 FIMC_CAMIF_MAX_HEIGHT,
615 fimc_fmt_is_user_defined(ffmt->color) ?
616 3 : 1,
617 0);
618 return ffmt;
619 }
620 /* Can't scale or crop in transparent (JPEG) transfer mode */
621 if (fimc_fmt_is_user_defined(ffmt->color)) {
622 *width = ctx->s_frame.f_width;
623 *height = ctx->s_frame.f_height;
624 return ffmt;
625 }
626 /* Apply the scaler and the output DMA constraints */
627 max_w = rotation ? pl->out_rot_en_w : pl->out_rot_dis_w;
628 if (ctx->state & FIMC_COMPOSE) {
629 min_w = dst->offs_h + dst->width;
630 min_h = dst->offs_v + dst->height;
631 } else {
632 min_w = var->min_out_pixsize;
633 min_h = var->min_out_pixsize;
634 }
635 if (var->min_vsize_align == 1 && !rotation)
636 align_h = fimc_fmt_is_rgb(ffmt->color) ? 0 : 1;
637
638 depth = fimc_get_format_depth(ffmt);
639 v4l_bound_align_image(width, min_w, max_w,
640 ffs(var->min_out_pixsize) - 1,
641 height, min_h, FIMC_CAMIF_MAX_HEIGHT,
642 align_h,
643 64/(ALIGN(depth, 8)));
644
645 dbg("pad%d: code: 0x%x, %dx%d. dst fmt: %dx%d",
646 pad, code ? *code : 0, *width, *height,
647 dst->f_width, dst->f_height);
648
649 return ffmt;
650 }
651
652 static void fimc_capture_try_selection(struct fimc_ctx *ctx,
653 struct v4l2_rect *r,
654 int target)
655 {
656 bool rotate = ctx->rotation == 90 || ctx->rotation == 270;
657 struct fimc_dev *fimc = ctx->fimc_dev;
658 const struct fimc_variant *var = fimc->variant;
659 const struct fimc_pix_limit *pl = var->pix_limit;
660 struct fimc_frame *sink = &ctx->s_frame;
661 u32 max_w, max_h, min_w = 0, min_h = 0, min_sz;
662 u32 align_sz = 0, align_h = 4;
663 u32 max_sc_h, max_sc_v;
664
665 /* In JPEG transparent transfer mode cropping is not supported */
666 if (fimc_fmt_is_user_defined(ctx->d_frame.fmt->color)) {
667 r->width = sink->f_width;
668 r->height = sink->f_height;
669 r->left = r->top = 0;
670 return;
671 }
672 if (target == V4L2_SEL_TGT_COMPOSE) {
673 if (ctx->rotation != 90 && ctx->rotation != 270)
674 align_h = 1;
675 max_sc_h = min(SCALER_MAX_HRATIO, 1 << (ffs(sink->width) - 3));
676 max_sc_v = min(SCALER_MAX_VRATIO, 1 << (ffs(sink->height) - 1));
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, V4L2_CAP_STREAMING |
729 V4L2_CAP_VIDEO_CAPTURE_MPLANE);
730 return 0;
731 }
732
733 static int fimc_cap_enum_fmt_mplane(struct file *file, void *priv,
734 struct v4l2_fmtdesc *f)
735 {
736 struct fimc_fmt *fmt;
737
738 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM | FMT_FLAGS_M2M,
739 f->index);
740 if (!fmt)
741 return -EINVAL;
742 strncpy(f->description, fmt->name, sizeof(f->description) - 1);
743 f->pixelformat = fmt->fourcc;
744 if (fmt->fourcc == MEDIA_BUS_FMT_JPEG_1X8)
745 f->flags |= V4L2_FMT_FLAG_COMPRESSED;
746 return 0;
747 }
748
749 static struct media_entity *fimc_pipeline_get_head(struct media_entity *me)
750 {
751 struct media_pad *pad = &me->pads[0];
752
753 while (!(pad->flags & MEDIA_PAD_FL_SOURCE)) {
754 pad = media_entity_remote_pad(pad);
755 if (!pad)
756 break;
757 me = pad->entity;
758 pad = &me->pads[0];
759 }
760
761 return me;
762 }
763
764 /**
765 * fimc_pipeline_try_format - negotiate and/or set formats at pipeline
766 * elements
767 * @ctx: FIMC capture context
768 * @tfmt: media bus format to try/set on subdevs
769 * @fmt_id: fimc pixel format id corresponding to returned @tfmt (output)
770 * @set: true to set format on subdevs, false to try only
771 */
772 static int fimc_pipeline_try_format(struct fimc_ctx *ctx,
773 struct v4l2_mbus_framefmt *tfmt,
774 struct fimc_fmt **fmt_id,
775 bool set)
776 {
777 struct fimc_dev *fimc = ctx->fimc_dev;
778 struct fimc_pipeline *p = to_fimc_pipeline(fimc->vid_cap.ve.pipe);
779 struct v4l2_subdev *sd = p->subdevs[IDX_SENSOR];
780 struct v4l2_subdev_format sfmt;
781 struct v4l2_mbus_framefmt *mf = &sfmt.format;
782 struct media_entity *me;
783 struct fimc_fmt *ffmt;
784 struct media_pad *pad;
785 int ret, i = 1;
786 u32 fcc;
787
788 if (WARN_ON(!sd || !tfmt))
789 return -EINVAL;
790
791 memset(&sfmt, 0, sizeof(sfmt));
792 sfmt.format = *tfmt;
793 sfmt.which = set ? V4L2_SUBDEV_FORMAT_ACTIVE : V4L2_SUBDEV_FORMAT_TRY;
794
795 me = fimc_pipeline_get_head(&sd->entity);
796
797 while (1) {
798 ffmt = fimc_find_format(NULL, mf->code != 0 ? &mf->code : NULL,
799 FMT_FLAGS_CAM, i++);
800 if (ffmt == NULL) {
801 /*
802 * Notify user-space if common pixel code for
803 * host and sensor does not exist.
804 */
805 return -EINVAL;
806 }
807 mf->code = tfmt->code = ffmt->mbus_code;
808
809 /* set format on all pipeline subdevs */
810 while (me != &fimc->vid_cap.subdev.entity) {
811 sd = media_entity_to_v4l2_subdev(me);
812
813 sfmt.pad = 0;
814 ret = v4l2_subdev_call(sd, pad, set_fmt, NULL, &sfmt);
815 if (ret)
816 return ret;
817
818 if (me->pads[0].flags & MEDIA_PAD_FL_SINK) {
819 sfmt.pad = me->num_pads - 1;
820 mf->code = tfmt->code;
821 ret = v4l2_subdev_call(sd, pad, set_fmt, NULL,
822 &sfmt);
823 if (ret)
824 return ret;
825 }
826
827 pad = media_entity_remote_pad(&me->pads[sfmt.pad]);
828 if (!pad)
829 return -EINVAL;
830 me = pad->entity;
831 }
832
833 if (mf->code != tfmt->code)
834 continue;
835
836 fcc = ffmt->fourcc;
837 tfmt->width = mf->width;
838 tfmt->height = mf->height;
839 ffmt = fimc_capture_try_format(ctx, &tfmt->width, &tfmt->height,
840 NULL, &fcc, FIMC_SD_PAD_SINK_CAM);
841 ffmt = fimc_capture_try_format(ctx, &tfmt->width, &tfmt->height,
842 NULL, &fcc, FIMC_SD_PAD_SOURCE);
843 if (ffmt && ffmt->mbus_code)
844 mf->code = ffmt->mbus_code;
845 if (mf->width != tfmt->width || mf->height != tfmt->height)
846 continue;
847 tfmt->code = mf->code;
848 break;
849 }
850
851 if (fmt_id && ffmt)
852 *fmt_id = ffmt;
853 *tfmt = *mf;
854
855 return 0;
856 }
857
858 /**
859 * fimc_get_sensor_frame_desc - query the sensor for media bus frame parameters
860 * @sensor: pointer to the sensor subdev
861 * @plane_fmt: provides plane sizes corresponding to the frame layout entries
862 * @num_planes: number of planes
863 * @try: true to set the frame parameters, false to query only
864 *
865 * This function is used by this driver only for compressed/blob data formats.
866 */
867 static int fimc_get_sensor_frame_desc(struct v4l2_subdev *sensor,
868 struct v4l2_plane_pix_format *plane_fmt,
869 unsigned int num_planes, bool try)
870 {
871 struct v4l2_mbus_frame_desc fd;
872 int i, ret;
873 int pad;
874
875 for (i = 0; i < num_planes; i++)
876 fd.entry[i].length = plane_fmt[i].sizeimage;
877
878 pad = sensor->entity.num_pads - 1;
879 if (try)
880 ret = v4l2_subdev_call(sensor, pad, set_frame_desc, pad, &fd);
881 else
882 ret = v4l2_subdev_call(sensor, pad, get_frame_desc, pad, &fd);
883
884 if (ret < 0)
885 return ret;
886
887 if (num_planes != fd.num_entries)
888 return -EINVAL;
889
890 for (i = 0; i < num_planes; i++)
891 plane_fmt[i].sizeimage = fd.entry[i].length;
892
893 if (fd.entry[0].length > FIMC_MAX_JPEG_BUF_SIZE) {
894 v4l2_err(sensor->v4l2_dev, "Unsupported buffer size: %u\n",
895 fd.entry[0].length);
896
897 return -EINVAL;
898 }
899
900 return 0;
901 }
902
903 static int fimc_cap_g_fmt_mplane(struct file *file, void *fh,
904 struct v4l2_format *f)
905 {
906 struct fimc_dev *fimc = video_drvdata(file);
907
908 __fimc_get_format(&fimc->vid_cap.ctx->d_frame, f);
909 return 0;
910 }
911
912 /*
913 * Try or set format on the fimc.X.capture video node and additionally
914 * on the whole pipeline if @try is false.
915 * Locking: the caller must _not_ hold the graph mutex.
916 */
917 static int __video_try_or_set_format(struct fimc_dev *fimc,
918 struct v4l2_format *f, bool try,
919 struct fimc_fmt **inp_fmt,
920 struct fimc_fmt **out_fmt)
921 {
922 struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
923 struct fimc_vid_cap *vc = &fimc->vid_cap;
924 struct exynos_video_entity *ve = &vc->ve;
925 struct fimc_ctx *ctx = vc->ctx;
926 unsigned int width = 0, height = 0;
927 int ret = 0;
928
929 /* Pre-configure format at the camera input interface, for JPEG only */
930 if (fimc_jpeg_fourcc(pix->pixelformat)) {
931 fimc_capture_try_format(ctx, &pix->width, &pix->height,
932 NULL, &pix->pixelformat,
933 FIMC_SD_PAD_SINK_CAM);
934 if (try) {
935 width = pix->width;
936 height = pix->height;
937 } else {
938 ctx->s_frame.f_width = pix->width;
939 ctx->s_frame.f_height = pix->height;
940 }
941 }
942
943 /* Try the format at the scaler and the DMA output */
944 *out_fmt = fimc_capture_try_format(ctx, &pix->width, &pix->height,
945 NULL, &pix->pixelformat,
946 FIMC_SD_PAD_SOURCE);
947 if (*out_fmt == NULL)
948 return -EINVAL;
949
950 /* Restore image width/height for JPEG (no resizing supported). */
951 if (try && fimc_jpeg_fourcc(pix->pixelformat)) {
952 pix->width = width;
953 pix->height = height;
954 }
955
956 /* Try to match format at the host and the sensor */
957 if (!vc->user_subdev_api) {
958 struct v4l2_mbus_framefmt mbus_fmt;
959 struct v4l2_mbus_framefmt *mf;
960
961 mf = try ? &mbus_fmt : &fimc->vid_cap.ci_fmt;
962
963 mf->code = (*out_fmt)->mbus_code;
964 mf->width = pix->width;
965 mf->height = pix->height;
966
967 fimc_md_graph_lock(ve);
968 ret = fimc_pipeline_try_format(ctx, mf, inp_fmt, try);
969 fimc_md_graph_unlock(ve);
970
971 if (ret < 0)
972 return ret;
973
974 pix->width = mf->width;
975 pix->height = mf->height;
976 }
977
978 fimc_adjust_mplane_format(*out_fmt, pix->width, pix->height, pix);
979
980 if ((*out_fmt)->flags & FMT_FLAGS_COMPRESSED) {
981 struct v4l2_subdev *sensor;
982
983 fimc_md_graph_lock(ve);
984
985 sensor = __fimc_md_get_subdev(ve->pipe, IDX_SENSOR);
986 if (sensor)
987 fimc_get_sensor_frame_desc(sensor, pix->plane_fmt,
988 (*out_fmt)->memplanes, try);
989 else
990 ret = -EPIPE;
991
992 fimc_md_graph_unlock(ve);
993 }
994
995 return ret;
996 }
997
998 static int fimc_cap_try_fmt_mplane(struct file *file, void *fh,
999 struct v4l2_format *f)
1000 {
1001 struct fimc_dev *fimc = video_drvdata(file);
1002 struct fimc_fmt *out_fmt = NULL, *inp_fmt = NULL;
1003
1004 return __video_try_or_set_format(fimc, f, true, &inp_fmt, &out_fmt);
1005 }
1006
1007 static void fimc_capture_mark_jpeg_xfer(struct fimc_ctx *ctx,
1008 enum fimc_color_fmt color)
1009 {
1010 bool jpeg = fimc_fmt_is_user_defined(color);
1011
1012 ctx->scaler.enabled = !jpeg;
1013 fimc_ctrls_activate(ctx, !jpeg);
1014
1015 if (jpeg)
1016 set_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state);
1017 else
1018 clear_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state);
1019 }
1020
1021 static int __fimc_capture_set_format(struct fimc_dev *fimc,
1022 struct v4l2_format *f)
1023 {
1024 struct fimc_vid_cap *vc = &fimc->vid_cap;
1025 struct fimc_ctx *ctx = vc->ctx;
1026 struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
1027 struct fimc_frame *ff = &ctx->d_frame;
1028 struct fimc_fmt *inp_fmt = NULL;
1029 int ret, i;
1030
1031 if (vb2_is_busy(&fimc->vid_cap.vbq))
1032 return -EBUSY;
1033
1034 ret = __video_try_or_set_format(fimc, f, false, &inp_fmt, &ff->fmt);
1035 if (ret < 0)
1036 return ret;
1037
1038 /* Update RGB Alpha control state and value range */
1039 fimc_alpha_ctrl_update(ctx);
1040
1041 for (i = 0; i < ff->fmt->memplanes; i++) {
1042 ff->bytesperline[i] = pix->plane_fmt[i].bytesperline;
1043 ff->payload[i] = pix->plane_fmt[i].sizeimage;
1044 }
1045
1046 set_frame_bounds(ff, pix->width, pix->height);
1047 /* Reset the composition rectangle if not yet configured */
1048 if (!(ctx->state & FIMC_COMPOSE))
1049 set_frame_crop(ff, 0, 0, pix->width, pix->height);
1050
1051 fimc_capture_mark_jpeg_xfer(ctx, ff->fmt->color);
1052
1053 /* Reset cropping and set format at the camera interface input */
1054 if (!vc->user_subdev_api) {
1055 ctx->s_frame.fmt = inp_fmt;
1056 set_frame_bounds(&ctx->s_frame, pix->width, pix->height);
1057 set_frame_crop(&ctx->s_frame, 0, 0, pix->width, pix->height);
1058 }
1059
1060 return ret;
1061 }
1062
1063 static int fimc_cap_s_fmt_mplane(struct file *file, void *priv,
1064 struct v4l2_format *f)
1065 {
1066 struct fimc_dev *fimc = video_drvdata(file);
1067
1068 return __fimc_capture_set_format(fimc, f);
1069 }
1070
1071 static int fimc_cap_enum_input(struct file *file, void *priv,
1072 struct v4l2_input *i)
1073 {
1074 struct fimc_dev *fimc = video_drvdata(file);
1075 struct exynos_video_entity *ve = &fimc->vid_cap.ve;
1076 struct v4l2_subdev *sd;
1077
1078 if (i->index != 0)
1079 return -EINVAL;
1080
1081 i->type = V4L2_INPUT_TYPE_CAMERA;
1082 fimc_md_graph_lock(ve);
1083 sd = __fimc_md_get_subdev(ve->pipe, IDX_SENSOR);
1084 fimc_md_graph_unlock(ve);
1085
1086 if (sd)
1087 strlcpy(i->name, sd->name, sizeof(i->name));
1088
1089 return 0;
1090 }
1091
1092 static int fimc_cap_s_input(struct file *file, void *priv, unsigned int i)
1093 {
1094 return i == 0 ? i : -EINVAL;
1095 }
1096
1097 static int fimc_cap_g_input(struct file *file, void *priv, unsigned int *i)
1098 {
1099 *i = 0;
1100 return 0;
1101 }
1102
1103 /**
1104 * fimc_pipeline_validate - check for formats inconsistencies
1105 * between source and sink pad of each link
1106 * @fimc: the FIMC device this context applies to
1107 *
1108 * Return 0 if all formats match or -EPIPE otherwise.
1109 */
1110 static int fimc_pipeline_validate(struct fimc_dev *fimc)
1111 {
1112 struct v4l2_subdev_format sink_fmt, src_fmt;
1113 struct fimc_vid_cap *vc = &fimc->vid_cap;
1114 struct v4l2_subdev *sd = &vc->subdev;
1115 struct fimc_pipeline *p = to_fimc_pipeline(vc->ve.pipe);
1116 struct media_pad *sink_pad, *src_pad;
1117 int i, ret;
1118
1119 while (1) {
1120 /*
1121 * Find current entity sink pad and any remote sink pad linked
1122 * to it. We stop if there is no sink pad in current entity or
1123 * it is not linked to any other remote entity.
1124 */
1125 src_pad = NULL;
1126
1127 for (i = 0; i < sd->entity.num_pads; i++) {
1128 struct media_pad *p = &sd->entity.pads[i];
1129
1130 if (p->flags & MEDIA_PAD_FL_SINK) {
1131 sink_pad = p;
1132 src_pad = media_entity_remote_pad(sink_pad);
1133 if (src_pad)
1134 break;
1135 }
1136 }
1137
1138 if (!src_pad || !is_media_entity_v4l2_subdev(src_pad->entity))
1139 break;
1140
1141 /* Don't call FIMC subdev operation to avoid nested locking */
1142 if (sd == &vc->subdev) {
1143 struct fimc_frame *ff = &vc->ctx->s_frame;
1144 sink_fmt.format.width = ff->f_width;
1145 sink_fmt.format.height = ff->f_height;
1146 sink_fmt.format.code = ff->fmt ? ff->fmt->mbus_code : 0;
1147 } else {
1148 sink_fmt.pad = sink_pad->index;
1149 sink_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
1150 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &sink_fmt);
1151 if (ret < 0 && ret != -ENOIOCTLCMD)
1152 return -EPIPE;
1153 }
1154
1155 /* Retrieve format at the source pad */
1156 sd = media_entity_to_v4l2_subdev(src_pad->entity);
1157 src_fmt.pad = src_pad->index;
1158 src_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
1159 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &src_fmt);
1160 if (ret < 0 && ret != -ENOIOCTLCMD)
1161 return -EPIPE;
1162
1163 if (src_fmt.format.width != sink_fmt.format.width ||
1164 src_fmt.format.height != sink_fmt.format.height ||
1165 src_fmt.format.code != sink_fmt.format.code)
1166 return -EPIPE;
1167
1168 if (sd == p->subdevs[IDX_SENSOR] &&
1169 fimc_user_defined_mbus_fmt(src_fmt.format.code)) {
1170 struct v4l2_plane_pix_format plane_fmt[FIMC_MAX_PLANES];
1171 struct fimc_frame *frame = &vc->ctx->d_frame;
1172 unsigned int i;
1173
1174 ret = fimc_get_sensor_frame_desc(sd, plane_fmt,
1175 frame->fmt->memplanes,
1176 false);
1177 if (ret < 0)
1178 return -EPIPE;
1179
1180 for (i = 0; i < frame->fmt->memplanes; i++)
1181 if (frame->payload[i] < plane_fmt[i].sizeimage)
1182 return -EPIPE;
1183 }
1184 }
1185 return 0;
1186 }
1187
1188 static int fimc_cap_streamon(struct file *file, void *priv,
1189 enum v4l2_buf_type type)
1190 {
1191 struct fimc_dev *fimc = video_drvdata(file);
1192 struct fimc_vid_cap *vc = &fimc->vid_cap;
1193 struct media_entity *entity = &vc->ve.vdev.entity;
1194 struct fimc_source_info *si = NULL;
1195 struct v4l2_subdev *sd;
1196 int ret;
1197
1198 if (fimc_capture_active(fimc))
1199 return -EBUSY;
1200
1201 ret = media_pipeline_start(entity, &vc->ve.pipe->mp);
1202 if (ret < 0)
1203 return ret;
1204
1205 sd = __fimc_md_get_subdev(vc->ve.pipe, IDX_SENSOR);
1206 if (sd)
1207 si = v4l2_get_subdev_hostdata(sd);
1208
1209 if (si == NULL) {
1210 ret = -EPIPE;
1211 goto err_p_stop;
1212 }
1213 /*
1214 * Save configuration data related to currently attached image
1215 * sensor or other data source, e.g. FIMC-IS.
1216 */
1217 vc->source_config = *si;
1218
1219 if (vc->input == GRP_ID_FIMC_IS)
1220 vc->source_config.fimc_bus_type = FIMC_BUS_TYPE_ISP_WRITEBACK;
1221
1222 if (vc->user_subdev_api) {
1223 ret = fimc_pipeline_validate(fimc);
1224 if (ret < 0)
1225 goto err_p_stop;
1226 }
1227
1228 ret = vb2_ioctl_streamon(file, priv, type);
1229 if (!ret) {
1230 vc->streaming = true;
1231 return ret;
1232 }
1233
1234 err_p_stop:
1235 media_pipeline_stop(entity);
1236 return ret;
1237 }
1238
1239 static int fimc_cap_streamoff(struct file *file, void *priv,
1240 enum v4l2_buf_type type)
1241 {
1242 struct fimc_dev *fimc = video_drvdata(file);
1243 struct fimc_vid_cap *vc = &fimc->vid_cap;
1244 int ret;
1245
1246 ret = vb2_ioctl_streamoff(file, priv, type);
1247 if (ret < 0)
1248 return ret;
1249
1250 media_pipeline_stop(&vc->ve.vdev.entity);
1251 vc->streaming = false;
1252 return 0;
1253 }
1254
1255 static int fimc_cap_reqbufs(struct file *file, void *priv,
1256 struct v4l2_requestbuffers *reqbufs)
1257 {
1258 struct fimc_dev *fimc = video_drvdata(file);
1259 int ret;
1260
1261 ret = vb2_ioctl_reqbufs(file, priv, reqbufs);
1262
1263 if (!ret)
1264 fimc->vid_cap.reqbufs_count = reqbufs->count;
1265
1266 return ret;
1267 }
1268
1269 static int fimc_cap_g_selection(struct file *file, void *fh,
1270 struct v4l2_selection *s)
1271 {
1272 struct fimc_dev *fimc = video_drvdata(file);
1273 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1274 struct fimc_frame *f = &ctx->s_frame;
1275
1276 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1277 return -EINVAL;
1278
1279 switch (s->target) {
1280 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
1281 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1282 f = &ctx->d_frame;
1283 /* fall through */
1284 case V4L2_SEL_TGT_CROP_BOUNDS:
1285 case V4L2_SEL_TGT_CROP_DEFAULT:
1286 s->r.left = 0;
1287 s->r.top = 0;
1288 s->r.width = f->o_width;
1289 s->r.height = f->o_height;
1290 return 0;
1291
1292 case V4L2_SEL_TGT_COMPOSE:
1293 f = &ctx->d_frame;
1294 /* fall through */
1295 case V4L2_SEL_TGT_CROP:
1296 s->r.left = f->offs_h;
1297 s->r.top = f->offs_v;
1298 s->r.width = f->width;
1299 s->r.height = f->height;
1300 return 0;
1301 }
1302
1303 return -EINVAL;
1304 }
1305
1306 /* Return 1 if rectangle a is enclosed in rectangle b, or 0 otherwise. */
1307 static int enclosed_rectangle(struct v4l2_rect *a, struct v4l2_rect *b)
1308 {
1309 if (a->left < b->left || a->top < b->top)
1310 return 0;
1311 if (a->left + a->width > b->left + b->width)
1312 return 0;
1313 if (a->top + a->height > b->top + b->height)
1314 return 0;
1315
1316 return 1;
1317 }
1318
1319 static int fimc_cap_s_selection(struct file *file, void *fh,
1320 struct v4l2_selection *s)
1321 {
1322 struct fimc_dev *fimc = video_drvdata(file);
1323 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1324 struct v4l2_rect rect = s->r;
1325 struct fimc_frame *f;
1326 unsigned long flags;
1327
1328 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1329 return -EINVAL;
1330
1331 if (s->target == V4L2_SEL_TGT_COMPOSE)
1332 f = &ctx->d_frame;
1333 else if (s->target == V4L2_SEL_TGT_CROP)
1334 f = &ctx->s_frame;
1335 else
1336 return -EINVAL;
1337
1338 fimc_capture_try_selection(ctx, &rect, s->target);
1339
1340 if (s->flags & V4L2_SEL_FLAG_LE &&
1341 !enclosed_rectangle(&rect, &s->r))
1342 return -ERANGE;
1343
1344 if (s->flags & V4L2_SEL_FLAG_GE &&
1345 !enclosed_rectangle(&s->r, &rect))
1346 return -ERANGE;
1347
1348 s->r = rect;
1349 spin_lock_irqsave(&fimc->slock, flags);
1350 set_frame_crop(f, s->r.left, s->r.top, s->r.width,
1351 s->r.height);
1352 spin_unlock_irqrestore(&fimc->slock, flags);
1353
1354 set_bit(ST_CAPT_APPLY_CFG, &fimc->state);
1355 return 0;
1356 }
1357
1358 static const struct v4l2_ioctl_ops fimc_capture_ioctl_ops = {
1359 .vidioc_querycap = fimc_cap_querycap,
1360
1361 .vidioc_enum_fmt_vid_cap_mplane = fimc_cap_enum_fmt_mplane,
1362 .vidioc_try_fmt_vid_cap_mplane = fimc_cap_try_fmt_mplane,
1363 .vidioc_s_fmt_vid_cap_mplane = fimc_cap_s_fmt_mplane,
1364 .vidioc_g_fmt_vid_cap_mplane = fimc_cap_g_fmt_mplane,
1365
1366 .vidioc_reqbufs = fimc_cap_reqbufs,
1367 .vidioc_querybuf = vb2_ioctl_querybuf,
1368 .vidioc_qbuf = vb2_ioctl_qbuf,
1369 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1370 .vidioc_expbuf = vb2_ioctl_expbuf,
1371 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
1372 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1373
1374 .vidioc_streamon = fimc_cap_streamon,
1375 .vidioc_streamoff = fimc_cap_streamoff,
1376
1377 .vidioc_g_selection = fimc_cap_g_selection,
1378 .vidioc_s_selection = fimc_cap_s_selection,
1379
1380 .vidioc_enum_input = fimc_cap_enum_input,
1381 .vidioc_s_input = fimc_cap_s_input,
1382 .vidioc_g_input = fimc_cap_g_input,
1383 };
1384
1385 /* Capture subdev media entity operations */
1386 static int fimc_link_setup(struct media_entity *entity,
1387 const struct media_pad *local,
1388 const struct media_pad *remote, u32 flags)
1389 {
1390 struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
1391 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1392 struct fimc_vid_cap *vc = &fimc->vid_cap;
1393 struct v4l2_subdev *sensor;
1394
1395 if (!is_media_entity_v4l2_subdev(remote->entity))
1396 return -EINVAL;
1397
1398 if (WARN_ON(fimc == NULL))
1399 return 0;
1400
1401 dbg("%s --> %s, flags: 0x%x. input: 0x%x",
1402 local->entity->name, remote->entity->name, flags,
1403 fimc->vid_cap.input);
1404
1405 if (!(flags & MEDIA_LNK_FL_ENABLED)) {
1406 fimc->vid_cap.input = 0;
1407 return 0;
1408 }
1409
1410 if (vc->input != 0)
1411 return -EBUSY;
1412
1413 vc->input = sd->grp_id;
1414
1415 if (vc->user_subdev_api || vc->inh_sensor_ctrls)
1416 return 0;
1417
1418 /* Inherit V4L2 controls from the image sensor subdev. */
1419 sensor = fimc_find_remote_sensor(&vc->subdev.entity);
1420 if (sensor == NULL)
1421 return 0;
1422
1423 return v4l2_ctrl_add_handler(&vc->ctx->ctrls.handler,
1424 sensor->ctrl_handler, NULL);
1425 }
1426
1427 static const struct media_entity_operations fimc_sd_media_ops = {
1428 .link_setup = fimc_link_setup,
1429 };
1430
1431 /**
1432 * fimc_sensor_notify - v4l2_device notification from a sensor subdev
1433 * @sd: pointer to a subdev generating the notification
1434 * @notification: the notification type, must be S5P_FIMC_TX_END_NOTIFY
1435 * @arg: pointer to an u32 type integer that stores the frame payload value
1436 *
1437 * The End Of Frame notification sent by sensor subdev in its still capture
1438 * mode. If there is only a single VSYNC generated by the sensor at the
1439 * beginning of a frame transmission, FIMC does not issue the LastIrq
1440 * (end of frame) interrupt. And this notification is used to complete the
1441 * frame capture and returning a buffer to user-space. Subdev drivers should
1442 * call this notification from their last 'End of frame capture' interrupt.
1443 */
1444 void fimc_sensor_notify(struct v4l2_subdev *sd, unsigned int notification,
1445 void *arg)
1446 {
1447 struct fimc_source_info *si;
1448 struct fimc_vid_buffer *buf;
1449 struct fimc_md *fmd;
1450 struct fimc_dev *fimc;
1451 unsigned long flags;
1452
1453 if (sd == NULL)
1454 return;
1455
1456 si = v4l2_get_subdev_hostdata(sd);
1457 fmd = entity_to_fimc_mdev(&sd->entity);
1458
1459 spin_lock_irqsave(&fmd->slock, flags);
1460
1461 fimc = si ? source_to_sensor_info(si)->host : NULL;
1462
1463 if (fimc && arg && notification == S5P_FIMC_TX_END_NOTIFY &&
1464 test_bit(ST_CAPT_PEND, &fimc->state)) {
1465 unsigned long irq_flags;
1466 spin_lock_irqsave(&fimc->slock, irq_flags);
1467 if (!list_empty(&fimc->vid_cap.active_buf_q)) {
1468 buf = list_entry(fimc->vid_cap.active_buf_q.next,
1469 struct fimc_vid_buffer, list);
1470 vb2_set_plane_payload(&buf->vb.vb2_buf, 0,
1471 *((u32 *)arg));
1472 }
1473 fimc_capture_irq_handler(fimc, 1);
1474 fimc_deactivate_capture(fimc);
1475 spin_unlock_irqrestore(&fimc->slock, irq_flags);
1476 }
1477 spin_unlock_irqrestore(&fmd->slock, flags);
1478 }
1479
1480 static int fimc_subdev_enum_mbus_code(struct v4l2_subdev *sd,
1481 struct v4l2_subdev_pad_config *cfg,
1482 struct v4l2_subdev_mbus_code_enum *code)
1483 {
1484 struct fimc_fmt *fmt;
1485
1486 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, code->index);
1487 if (!fmt)
1488 return -EINVAL;
1489 code->code = fmt->mbus_code;
1490 return 0;
1491 }
1492
1493 static int fimc_subdev_get_fmt(struct v4l2_subdev *sd,
1494 struct v4l2_subdev_pad_config *cfg,
1495 struct v4l2_subdev_format *fmt)
1496 {
1497 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1498 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1499 struct fimc_frame *ff = &ctx->s_frame;
1500 struct v4l2_mbus_framefmt *mf;
1501
1502 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1503 mf = v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
1504 fmt->format = *mf;
1505 return 0;
1506 }
1507
1508 mf = &fmt->format;
1509 mutex_lock(&fimc->lock);
1510
1511 switch (fmt->pad) {
1512 case FIMC_SD_PAD_SOURCE:
1513 if (!WARN_ON(ff->fmt == NULL))
1514 mf->code = ff->fmt->mbus_code;
1515 /* Sink pads crop rectangle size */
1516 mf->width = ff->width;
1517 mf->height = ff->height;
1518 break;
1519 case FIMC_SD_PAD_SINK_FIFO:
1520 *mf = fimc->vid_cap.wb_fmt;
1521 break;
1522 case FIMC_SD_PAD_SINK_CAM:
1523 default:
1524 *mf = fimc->vid_cap.ci_fmt;
1525 break;
1526 }
1527
1528 mutex_unlock(&fimc->lock);
1529 mf->colorspace = V4L2_COLORSPACE_JPEG;
1530
1531 return 0;
1532 }
1533
1534 static int fimc_subdev_set_fmt(struct v4l2_subdev *sd,
1535 struct v4l2_subdev_pad_config *cfg,
1536 struct v4l2_subdev_format *fmt)
1537 {
1538 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1539 struct v4l2_mbus_framefmt *mf = &fmt->format;
1540 struct fimc_vid_cap *vc = &fimc->vid_cap;
1541 struct fimc_ctx *ctx = vc->ctx;
1542 struct fimc_frame *ff;
1543 struct fimc_fmt *ffmt;
1544
1545 dbg("pad%d: code: 0x%x, %dx%d",
1546 fmt->pad, mf->code, mf->width, mf->height);
1547
1548 if (fmt->pad == FIMC_SD_PAD_SOURCE && vb2_is_busy(&vc->vbq))
1549 return -EBUSY;
1550
1551 mutex_lock(&fimc->lock);
1552 ffmt = fimc_capture_try_format(ctx, &mf->width, &mf->height,
1553 &mf->code, NULL, fmt->pad);
1554 mutex_unlock(&fimc->lock);
1555 mf->colorspace = V4L2_COLORSPACE_JPEG;
1556
1557 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1558 mf = v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
1559 *mf = fmt->format;
1560 return 0;
1561 }
1562 /* There must be a bug in the driver if this happens */
1563 if (WARN_ON(ffmt == NULL))
1564 return -EINVAL;
1565
1566 /* Update RGB Alpha control state and value range */
1567 fimc_alpha_ctrl_update(ctx);
1568
1569 fimc_capture_mark_jpeg_xfer(ctx, ffmt->color);
1570 if (fmt->pad == FIMC_SD_PAD_SOURCE) {
1571 ff = &ctx->d_frame;
1572 /* Sink pads crop rectangle size */
1573 mf->width = ctx->s_frame.width;
1574 mf->height = ctx->s_frame.height;
1575 } else {
1576 ff = &ctx->s_frame;
1577 }
1578
1579 mutex_lock(&fimc->lock);
1580 set_frame_bounds(ff, mf->width, mf->height);
1581
1582 if (fmt->pad == FIMC_SD_PAD_SINK_FIFO)
1583 vc->wb_fmt = *mf;
1584 else if (fmt->pad == FIMC_SD_PAD_SINK_CAM)
1585 vc->ci_fmt = *mf;
1586
1587 ff->fmt = ffmt;
1588
1589 /* Reset the crop rectangle if required. */
1590 if (!(fmt->pad == FIMC_SD_PAD_SOURCE && (ctx->state & FIMC_COMPOSE)))
1591 set_frame_crop(ff, 0, 0, mf->width, mf->height);
1592
1593 if (fmt->pad != FIMC_SD_PAD_SOURCE)
1594 ctx->state &= ~FIMC_COMPOSE;
1595
1596 mutex_unlock(&fimc->lock);
1597 return 0;
1598 }
1599
1600 static int fimc_subdev_get_selection(struct v4l2_subdev *sd,
1601 struct v4l2_subdev_pad_config *cfg,
1602 struct v4l2_subdev_selection *sel)
1603 {
1604 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1605 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1606 struct fimc_frame *f = &ctx->s_frame;
1607 struct v4l2_rect *r = &sel->r;
1608 struct v4l2_rect *try_sel;
1609
1610 if (sel->pad == FIMC_SD_PAD_SOURCE)
1611 return -EINVAL;
1612
1613 mutex_lock(&fimc->lock);
1614
1615 switch (sel->target) {
1616 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1617 f = &ctx->d_frame;
1618 /* fall through */
1619 case V4L2_SEL_TGT_CROP_BOUNDS:
1620 r->width = f->o_width;
1621 r->height = f->o_height;
1622 r->left = 0;
1623 r->top = 0;
1624 mutex_unlock(&fimc->lock);
1625 return 0;
1626
1627 case V4L2_SEL_TGT_CROP:
1628 try_sel = v4l2_subdev_get_try_crop(sd, cfg, sel->pad);
1629 break;
1630 case V4L2_SEL_TGT_COMPOSE:
1631 try_sel = v4l2_subdev_get_try_compose(sd, cfg, sel->pad);
1632 f = &ctx->d_frame;
1633 break;
1634 default:
1635 mutex_unlock(&fimc->lock);
1636 return -EINVAL;
1637 }
1638
1639 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1640 sel->r = *try_sel;
1641 } else {
1642 r->left = f->offs_h;
1643 r->top = f->offs_v;
1644 r->width = f->width;
1645 r->height = f->height;
1646 }
1647
1648 dbg("target %#x: l:%d, t:%d, %dx%d, f_w: %d, f_h: %d",
1649 sel->pad, r->left, r->top, r->width, r->height,
1650 f->f_width, f->f_height);
1651
1652 mutex_unlock(&fimc->lock);
1653 return 0;
1654 }
1655
1656 static int fimc_subdev_set_selection(struct v4l2_subdev *sd,
1657 struct v4l2_subdev_pad_config *cfg,
1658 struct v4l2_subdev_selection *sel)
1659 {
1660 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1661 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1662 struct fimc_frame *f = &ctx->s_frame;
1663 struct v4l2_rect *r = &sel->r;
1664 struct v4l2_rect *try_sel;
1665 unsigned long flags;
1666
1667 if (sel->pad == FIMC_SD_PAD_SOURCE)
1668 return -EINVAL;
1669
1670 mutex_lock(&fimc->lock);
1671 fimc_capture_try_selection(ctx, r, V4L2_SEL_TGT_CROP);
1672
1673 switch (sel->target) {
1674 case V4L2_SEL_TGT_CROP:
1675 try_sel = v4l2_subdev_get_try_crop(sd, cfg, sel->pad);
1676 break;
1677 case V4L2_SEL_TGT_COMPOSE:
1678 try_sel = v4l2_subdev_get_try_compose(sd, cfg, sel->pad);
1679 f = &ctx->d_frame;
1680 break;
1681 default:
1682 mutex_unlock(&fimc->lock);
1683 return -EINVAL;
1684 }
1685
1686 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1687 *try_sel = sel->r;
1688 } else {
1689 spin_lock_irqsave(&fimc->slock, flags);
1690 set_frame_crop(f, r->left, r->top, r->width, r->height);
1691 set_bit(ST_CAPT_APPLY_CFG, &fimc->state);
1692 if (sel->target == V4L2_SEL_TGT_COMPOSE)
1693 ctx->state |= FIMC_COMPOSE;
1694 spin_unlock_irqrestore(&fimc->slock, flags);
1695 }
1696
1697 dbg("target %#x: (%d,%d)/%dx%d", sel->target, r->left, r->top,
1698 r->width, r->height);
1699
1700 mutex_unlock(&fimc->lock);
1701 return 0;
1702 }
1703
1704 static const struct v4l2_subdev_pad_ops fimc_subdev_pad_ops = {
1705 .enum_mbus_code = fimc_subdev_enum_mbus_code,
1706 .get_selection = fimc_subdev_get_selection,
1707 .set_selection = fimc_subdev_set_selection,
1708 .get_fmt = fimc_subdev_get_fmt,
1709 .set_fmt = fimc_subdev_set_fmt,
1710 };
1711
1712 static const struct v4l2_subdev_ops fimc_subdev_ops = {
1713 .pad = &fimc_subdev_pad_ops,
1714 };
1715
1716 /* Set default format at the sensor and host interface */
1717 static int fimc_capture_set_default_format(struct fimc_dev *fimc)
1718 {
1719 struct v4l2_format fmt = {
1720 .type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
1721 .fmt.pix_mp = {
1722 .width = FIMC_DEFAULT_WIDTH,
1723 .height = FIMC_DEFAULT_HEIGHT,
1724 .pixelformat = V4L2_PIX_FMT_YUYV,
1725 .field = V4L2_FIELD_NONE,
1726 .colorspace = V4L2_COLORSPACE_JPEG,
1727 },
1728 };
1729
1730 return __fimc_capture_set_format(fimc, &fmt);
1731 }
1732
1733 /* fimc->lock must be already initialized */
1734 static int fimc_register_capture_device(struct fimc_dev *fimc,
1735 struct v4l2_device *v4l2_dev)
1736 {
1737 struct video_device *vfd = &fimc->vid_cap.ve.vdev;
1738 struct vb2_queue *q = &fimc->vid_cap.vbq;
1739 struct fimc_ctx *ctx;
1740 struct fimc_vid_cap *vid_cap;
1741 struct fimc_fmt *fmt;
1742 int ret = -ENOMEM;
1743
1744 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
1745 if (!ctx)
1746 return -ENOMEM;
1747
1748 ctx->fimc_dev = fimc;
1749 ctx->in_path = FIMC_IO_CAMERA;
1750 ctx->out_path = FIMC_IO_DMA;
1751 ctx->state = FIMC_CTX_CAP;
1752 ctx->s_frame.fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, 0);
1753 ctx->d_frame.fmt = ctx->s_frame.fmt;
1754
1755 memset(vfd, 0, sizeof(*vfd));
1756 snprintf(vfd->name, sizeof(vfd->name), "fimc.%d.capture", fimc->id);
1757
1758 vfd->fops = &fimc_capture_fops;
1759 vfd->ioctl_ops = &fimc_capture_ioctl_ops;
1760 vfd->v4l2_dev = v4l2_dev;
1761 vfd->minor = -1;
1762 vfd->release = video_device_release_empty;
1763 vfd->queue = q;
1764 vfd->lock = &fimc->lock;
1765
1766 video_set_drvdata(vfd, fimc);
1767 vid_cap = &fimc->vid_cap;
1768 vid_cap->active_buf_cnt = 0;
1769 vid_cap->reqbufs_count = 0;
1770 vid_cap->ctx = ctx;
1771
1772 INIT_LIST_HEAD(&vid_cap->pending_buf_q);
1773 INIT_LIST_HEAD(&vid_cap->active_buf_q);
1774
1775 memset(q, 0, sizeof(*q));
1776 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1777 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1778 q->drv_priv = ctx;
1779 q->ops = &fimc_capture_qops;
1780 q->mem_ops = &vb2_dma_contig_memops;
1781 q->buf_struct_size = sizeof(struct fimc_vid_buffer);
1782 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1783 q->lock = &fimc->lock;
1784 q->dev = &fimc->pdev->dev;
1785
1786 ret = vb2_queue_init(q);
1787 if (ret)
1788 goto err_free_ctx;
1789
1790 /* Default format configuration */
1791 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, 0);
1792 vid_cap->ci_fmt.width = FIMC_DEFAULT_WIDTH;
1793 vid_cap->ci_fmt.height = FIMC_DEFAULT_HEIGHT;
1794 vid_cap->ci_fmt.code = fmt->mbus_code;
1795
1796 ctx->s_frame.width = FIMC_DEFAULT_WIDTH;
1797 ctx->s_frame.height = FIMC_DEFAULT_HEIGHT;
1798 ctx->s_frame.fmt = fmt;
1799
1800 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_WRITEBACK, 0);
1801 vid_cap->wb_fmt = vid_cap->ci_fmt;
1802 vid_cap->wb_fmt.code = fmt->mbus_code;
1803
1804 vid_cap->vd_pad.flags = MEDIA_PAD_FL_SINK;
1805 vfd->entity.function = MEDIA_ENT_F_PROC_VIDEO_SCALER;
1806 ret = media_entity_pads_init(&vfd->entity, 1, &vid_cap->vd_pad);
1807 if (ret)
1808 goto err_free_ctx;
1809
1810 ret = fimc_ctrls_create(ctx);
1811 if (ret)
1812 goto err_me_cleanup;
1813
1814 ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1);
1815 if (ret)
1816 goto err_ctrl_free;
1817
1818 v4l2_info(v4l2_dev, "Registered %s as /dev/%s\n",
1819 vfd->name, video_device_node_name(vfd));
1820
1821 vfd->ctrl_handler = &ctx->ctrls.handler;
1822 return 0;
1823
1824 err_ctrl_free:
1825 fimc_ctrls_delete(ctx);
1826 err_me_cleanup:
1827 media_entity_cleanup(&vfd->entity);
1828 err_free_ctx:
1829 kfree(ctx);
1830 return ret;
1831 }
1832
1833 static int fimc_capture_subdev_registered(struct v4l2_subdev *sd)
1834 {
1835 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1836 int ret;
1837
1838 if (fimc == NULL)
1839 return -ENXIO;
1840
1841 ret = fimc_register_m2m_device(fimc, sd->v4l2_dev);
1842 if (ret)
1843 return ret;
1844
1845 fimc->vid_cap.ve.pipe = v4l2_get_subdev_hostdata(sd);
1846
1847 ret = fimc_register_capture_device(fimc, sd->v4l2_dev);
1848 if (ret) {
1849 fimc_unregister_m2m_device(fimc);
1850 fimc->vid_cap.ve.pipe = NULL;
1851 }
1852
1853 return ret;
1854 }
1855
1856 static void fimc_capture_subdev_unregistered(struct v4l2_subdev *sd)
1857 {
1858 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1859 struct video_device *vdev;
1860
1861 if (fimc == NULL)
1862 return;
1863
1864 mutex_lock(&fimc->lock);
1865
1866 fimc_unregister_m2m_device(fimc);
1867 vdev = &fimc->vid_cap.ve.vdev;
1868
1869 if (video_is_registered(vdev)) {
1870 video_unregister_device(vdev);
1871 media_entity_cleanup(&vdev->entity);
1872 fimc_ctrls_delete(fimc->vid_cap.ctx);
1873 fimc->vid_cap.ve.pipe = NULL;
1874 }
1875 kfree(fimc->vid_cap.ctx);
1876 fimc->vid_cap.ctx = NULL;
1877
1878 mutex_unlock(&fimc->lock);
1879 }
1880
1881 static const struct v4l2_subdev_internal_ops fimc_capture_sd_internal_ops = {
1882 .registered = fimc_capture_subdev_registered,
1883 .unregistered = fimc_capture_subdev_unregistered,
1884 };
1885
1886 int fimc_initialize_capture_subdev(struct fimc_dev *fimc)
1887 {
1888 struct v4l2_subdev *sd = &fimc->vid_cap.subdev;
1889 int ret;
1890
1891 v4l2_subdev_init(sd, &fimc_subdev_ops);
1892 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1893 snprintf(sd->name, sizeof(sd->name), "FIMC.%d", fimc->id);
1894
1895 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK_CAM].flags = MEDIA_PAD_FL_SINK;
1896 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK_FIFO].flags = MEDIA_PAD_FL_SINK;
1897 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
1898 ret = media_entity_pads_init(&sd->entity, FIMC_SD_PADS_NUM,
1899 fimc->vid_cap.sd_pads);
1900 if (ret)
1901 return ret;
1902
1903 sd->entity.ops = &fimc_sd_media_ops;
1904 sd->internal_ops = &fimc_capture_sd_internal_ops;
1905 v4l2_set_subdevdata(sd, fimc);
1906 return 0;
1907 }
1908
1909 void fimc_unregister_capture_subdev(struct fimc_dev *fimc)
1910 {
1911 struct v4l2_subdev *sd = &fimc->vid_cap.subdev;
1912
1913 v4l2_device_unregister_subdev(sd);
1914 media_entity_cleanup(&sd->entity);
1915 v4l2_set_subdevdata(sd, NULL);
1916 }
CRIS linux kernel tree