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[mirror_ubuntu-artful-kernel.git] / drivers / media / platform / exynos4-is / fimc-capture.c
1 /*
2 * Samsung S5P/EXYNOS4 SoC series camera interface (camera capture) driver
3 *
4 * Copyright (C) 2010 - 2012 Samsung Electronics Co., Ltd.
5 * Sylwester Nawrocki <s.nawrocki@samsung.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11
12 #include <linux/module.h>
13 #include <linux/kernel.h>
14 #include <linux/types.h>
15 #include <linux/errno.h>
16 #include <linux/bug.h>
17 #include <linux/interrupt.h>
18 #include <linux/device.h>
19 #include <linux/pm_runtime.h>
20 #include <linux/list.h>
21 #include <linux/slab.h>
22
23 #include <linux/videodev2.h>
24 #include <media/v4l2-device.h>
25 #include <media/v4l2-ioctl.h>
26 #include <media/v4l2-mem2mem.h>
27 #include <media/videobuf2-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 *
150 * To be called from within the interrupt handler with fimc.slock
151 * spinlock held. It updates the camera pixel crop, rotation and
152 * image flip in H/W.
153 */
154 static int fimc_capture_config_update(struct fimc_ctx *ctx)
155 {
156 struct fimc_dev *fimc = ctx->fimc_dev;
157 int ret;
158
159 fimc_hw_set_camera_offset(fimc, &ctx->s_frame);
160
161 ret = fimc_set_scaler_info(ctx);
162 if (ret)
163 return ret;
164
165 fimc_hw_set_prescaler(ctx);
166 fimc_hw_set_mainscaler(ctx);
167 fimc_hw_set_target_format(ctx);
168 fimc_hw_set_rotation(ctx);
169 fimc_hw_set_effect(ctx);
170 fimc_prepare_dma_offset(ctx, &ctx->d_frame);
171 fimc_hw_set_out_dma(ctx);
172 if (fimc->drv_data->alpha_color)
173 fimc_hw_set_rgb_alpha(ctx);
174
175 clear_bit(ST_CAPT_APPLY_CFG, &fimc->state);
176 return ret;
177 }
178
179 void fimc_capture_irq_handler(struct fimc_dev *fimc, int deq_buf)
180 {
181 struct fimc_vid_cap *cap = &fimc->vid_cap;
182 struct fimc_pipeline *p = to_fimc_pipeline(cap->ve.pipe);
183 struct v4l2_subdev *csis = p->subdevs[IDX_CSIS];
184 struct fimc_frame *f = &cap->ctx->d_frame;
185 struct fimc_vid_buffer *v_buf;
186
187 if (test_and_clear_bit(ST_CAPT_SHUT, &fimc->state)) {
188 wake_up(&fimc->irq_queue);
189 goto done;
190 }
191
192 if (!list_empty(&cap->active_buf_q) &&
193 test_bit(ST_CAPT_RUN, &fimc->state) && deq_buf) {
194 v_buf = fimc_active_queue_pop(cap);
195
196 v_buf->vb.vb2_buf.timestamp = ktime_get_ns();
197 v_buf->vb.sequence = cap->frame_count++;
198
199 vb2_buffer_done(&v_buf->vb.vb2_buf, VB2_BUF_STATE_DONE);
200 }
201
202 if (!list_empty(&cap->pending_buf_q)) {
203
204 v_buf = fimc_pending_queue_pop(cap);
205 fimc_hw_set_output_addr(fimc, &v_buf->paddr, cap->buf_index);
206 v_buf->index = cap->buf_index;
207
208 /* Move the buffer to the capture active queue */
209 fimc_active_queue_add(cap, v_buf);
210
211 dbg("next frame: %d, done frame: %d",
212 fimc_hw_get_frame_index(fimc), v_buf->index);
213
214 if (++cap->buf_index >= FIMC_MAX_OUT_BUFS)
215 cap->buf_index = 0;
216 }
217 /*
218 * Set up a buffer at MIPI-CSIS if current image format
219 * requires the frame embedded data capture.
220 */
221 if (f->fmt->mdataplanes && !list_empty(&cap->active_buf_q)) {
222 unsigned int plane = ffs(f->fmt->mdataplanes) - 1;
223 unsigned int size = f->payload[plane];
224 s32 index = fimc_hw_get_frame_index(fimc);
225 void *vaddr;
226
227 list_for_each_entry(v_buf, &cap->active_buf_q, list) {
228 if (v_buf->index != index)
229 continue;
230 vaddr = vb2_plane_vaddr(&v_buf->vb.vb2_buf, plane);
231 v4l2_subdev_call(csis, video, s_rx_buffer,
232 vaddr, &size);
233 break;
234 }
235 }
236
237 if (cap->active_buf_cnt == 0) {
238 if (deq_buf)
239 clear_bit(ST_CAPT_RUN, &fimc->state);
240
241 if (++cap->buf_index >= FIMC_MAX_OUT_BUFS)
242 cap->buf_index = 0;
243 } else {
244 set_bit(ST_CAPT_RUN, &fimc->state);
245 }
246
247 if (test_bit(ST_CAPT_APPLY_CFG, &fimc->state))
248 fimc_capture_config_update(cap->ctx);
249 done:
250 if (cap->active_buf_cnt == 1) {
251 fimc_deactivate_capture(fimc);
252 clear_bit(ST_CAPT_STREAM, &fimc->state);
253 }
254
255 dbg("frame: %d, active_buf_cnt: %d",
256 fimc_hw_get_frame_index(fimc), cap->active_buf_cnt);
257 }
258
259
260 static int start_streaming(struct vb2_queue *q, unsigned int count)
261 {
262 struct fimc_ctx *ctx = q->drv_priv;
263 struct fimc_dev *fimc = ctx->fimc_dev;
264 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
265 int min_bufs;
266 int ret;
267
268 vid_cap->frame_count = 0;
269
270 ret = fimc_capture_hw_init(fimc);
271 if (ret) {
272 fimc_capture_state_cleanup(fimc, false);
273 return ret;
274 }
275
276 set_bit(ST_CAPT_PEND, &fimc->state);
277
278 min_bufs = fimc->vid_cap.reqbufs_count > 1 ? 2 : 1;
279
280 if (vid_cap->active_buf_cnt >= min_bufs &&
281 !test_and_set_bit(ST_CAPT_STREAM, &fimc->state)) {
282 fimc_activate_capture(ctx);
283
284 if (!test_and_set_bit(ST_CAPT_ISP_STREAM, &fimc->state))
285 return fimc_pipeline_call(&vid_cap->ve, set_stream, 1);
286 }
287
288 return 0;
289 }
290
291 static void stop_streaming(struct vb2_queue *q)
292 {
293 struct fimc_ctx *ctx = q->drv_priv;
294 struct fimc_dev *fimc = ctx->fimc_dev;
295
296 if (!fimc_capture_active(fimc))
297 return;
298
299 fimc_stop_capture(fimc, false);
300 }
301
302 int fimc_capture_suspend(struct fimc_dev *fimc)
303 {
304 bool suspend = fimc_capture_busy(fimc);
305
306 int ret = fimc_stop_capture(fimc, suspend);
307 if (ret)
308 return ret;
309 return fimc_pipeline_call(&fimc->vid_cap.ve, close);
310 }
311
312 static void buffer_queue(struct vb2_buffer *vb);
313
314 int fimc_capture_resume(struct fimc_dev *fimc)
315 {
316 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
317 struct exynos_video_entity *ve = &vid_cap->ve;
318 struct fimc_vid_buffer *buf;
319 int i;
320
321 if (!test_and_clear_bit(ST_CAPT_SUSPENDED, &fimc->state))
322 return 0;
323
324 INIT_LIST_HEAD(&fimc->vid_cap.active_buf_q);
325 vid_cap->buf_index = 0;
326 fimc_pipeline_call(ve, open, &ve->vdev.entity, false);
327 fimc_capture_hw_init(fimc);
328
329 clear_bit(ST_CAPT_SUSPENDED, &fimc->state);
330
331 for (i = 0; i < vid_cap->reqbufs_count; i++) {
332 if (list_empty(&vid_cap->pending_buf_q))
333 break;
334 buf = fimc_pending_queue_pop(vid_cap);
335 buffer_queue(&buf->vb.vb2_buf);
336 }
337 return 0;
338
339 }
340
341 static int queue_setup(struct vb2_queue *vq,
342 unsigned int *num_buffers, unsigned int *num_planes,
343 unsigned int sizes[], struct device *alloc_devs[])
344 {
345 struct fimc_ctx *ctx = vq->drv_priv;
346 struct fimc_frame *frame = &ctx->d_frame;
347 struct fimc_fmt *fmt = frame->fmt;
348 unsigned long wh = frame->f_width * frame->f_height;
349 int i;
350
351 if (fmt == NULL)
352 return -EINVAL;
353
354 if (*num_planes) {
355 if (*num_planes != fmt->memplanes)
356 return -EINVAL;
357 for (i = 0; i < *num_planes; i++)
358 if (sizes[i] < (wh * fmt->depth[i]) / 8)
359 return -EINVAL;
360 return 0;
361 }
362
363 *num_planes = fmt->memplanes;
364
365 for (i = 0; i < fmt->memplanes; i++) {
366 unsigned int size = (wh * fmt->depth[i]) / 8;
367
368 if (fimc_fmt_is_user_defined(fmt->color))
369 sizes[i] = frame->payload[i];
370 else
371 sizes[i] = max_t(u32, size, frame->payload[i]);
372 }
373
374 return 0;
375 }
376
377 static int buffer_prepare(struct vb2_buffer *vb)
378 {
379 struct vb2_queue *vq = vb->vb2_queue;
380 struct fimc_ctx *ctx = vq->drv_priv;
381 int i;
382
383 if (ctx->d_frame.fmt == NULL)
384 return -EINVAL;
385
386 for (i = 0; i < ctx->d_frame.fmt->memplanes; i++) {
387 unsigned long size = ctx->d_frame.payload[i];
388
389 if (vb2_plane_size(vb, i) < size) {
390 v4l2_err(&ctx->fimc_dev->vid_cap.ve.vdev,
391 "User buffer too small (%ld < %ld)\n",
392 vb2_plane_size(vb, i), size);
393 return -EINVAL;
394 }
395 vb2_set_plane_payload(vb, i, size);
396 }
397
398 return 0;
399 }
400
401 static void buffer_queue(struct vb2_buffer *vb)
402 {
403 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
404 struct fimc_vid_buffer *buf
405 = container_of(vbuf, struct fimc_vid_buffer, vb);
406 struct fimc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
407 struct fimc_dev *fimc = ctx->fimc_dev;
408 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
409 struct exynos_video_entity *ve = &vid_cap->ve;
410 unsigned long flags;
411 int min_bufs;
412
413 spin_lock_irqsave(&fimc->slock, flags);
414 fimc_prepare_addr(ctx, &buf->vb.vb2_buf, &ctx->d_frame, &buf->paddr);
415
416 if (!test_bit(ST_CAPT_SUSPENDED, &fimc->state) &&
417 !test_bit(ST_CAPT_STREAM, &fimc->state) &&
418 vid_cap->active_buf_cnt < FIMC_MAX_OUT_BUFS) {
419 /* Setup the buffer directly for processing. */
420 int buf_id = (vid_cap->reqbufs_count == 1) ? -1 :
421 vid_cap->buf_index;
422
423 fimc_hw_set_output_addr(fimc, &buf->paddr, buf_id);
424 buf->index = vid_cap->buf_index;
425 fimc_active_queue_add(vid_cap, buf);
426
427 if (++vid_cap->buf_index >= FIMC_MAX_OUT_BUFS)
428 vid_cap->buf_index = 0;
429 } else {
430 fimc_pending_queue_add(vid_cap, buf);
431 }
432
433 min_bufs = vid_cap->reqbufs_count > 1 ? 2 : 1;
434
435
436 if (vb2_is_streaming(&vid_cap->vbq) &&
437 vid_cap->active_buf_cnt >= min_bufs &&
438 !test_and_set_bit(ST_CAPT_STREAM, &fimc->state)) {
439 int ret;
440
441 fimc_activate_capture(ctx);
442 spin_unlock_irqrestore(&fimc->slock, flags);
443
444 if (test_and_set_bit(ST_CAPT_ISP_STREAM, &fimc->state))
445 return;
446
447 ret = fimc_pipeline_call(ve, set_stream, 1);
448 if (ret < 0)
449 v4l2_err(&ve->vdev, "stream on failed: %d\n", ret);
450 return;
451 }
452 spin_unlock_irqrestore(&fimc->slock, flags);
453 }
454
455 static const struct vb2_ops fimc_capture_qops = {
456 .queue_setup = queue_setup,
457 .buf_prepare = buffer_prepare,
458 .buf_queue = buffer_queue,
459 .wait_prepare = vb2_ops_wait_prepare,
460 .wait_finish = vb2_ops_wait_finish,
461 .start_streaming = start_streaming,
462 .stop_streaming = stop_streaming,
463 };
464
465 static int fimc_capture_set_default_format(struct fimc_dev *fimc);
466
467 static int fimc_capture_open(struct file *file)
468 {
469 struct fimc_dev *fimc = video_drvdata(file);
470 struct fimc_vid_cap *vc = &fimc->vid_cap;
471 struct exynos_video_entity *ve = &vc->ve;
472 int ret = -EBUSY;
473
474 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
475
476 mutex_lock(&fimc->lock);
477
478 if (fimc_m2m_active(fimc))
479 goto unlock;
480
481 set_bit(ST_CAPT_BUSY, &fimc->state);
482 ret = pm_runtime_get_sync(&fimc->pdev->dev);
483 if (ret < 0)
484 goto unlock;
485
486 ret = v4l2_fh_open(file);
487 if (ret) {
488 pm_runtime_put_sync(&fimc->pdev->dev);
489 goto unlock;
490 }
491
492 if (v4l2_fh_is_singular_file(file)) {
493 fimc_md_graph_lock(ve);
494
495 ret = fimc_pipeline_call(ve, open, &ve->vdev.entity, true);
496
497 if (ret == 0 && vc->user_subdev_api && vc->inh_sensor_ctrls) {
498 /*
499 * Recreate controls of the the video node to drop
500 * any controls inherited from the sensor subdev.
501 */
502 fimc_ctrls_delete(vc->ctx);
503
504 ret = fimc_ctrls_create(vc->ctx);
505 if (ret == 0)
506 vc->inh_sensor_ctrls = false;
507 }
508 if (ret == 0)
509 ve->vdev.entity.use_count++;
510
511 fimc_md_graph_unlock(ve);
512
513 if (ret == 0)
514 ret = fimc_capture_set_default_format(fimc);
515
516 if (ret < 0) {
517 clear_bit(ST_CAPT_BUSY, &fimc->state);
518 pm_runtime_put_sync(&fimc->pdev->dev);
519 v4l2_fh_release(file);
520 }
521 }
522 unlock:
523 mutex_unlock(&fimc->lock);
524 return ret;
525 }
526
527 static int fimc_capture_release(struct file *file)
528 {
529 struct fimc_dev *fimc = video_drvdata(file);
530 struct fimc_vid_cap *vc = &fimc->vid_cap;
531 bool close = v4l2_fh_is_singular_file(file);
532 int ret;
533
534 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
535
536 mutex_lock(&fimc->lock);
537
538 if (close && vc->streaming) {
539 media_entity_pipeline_stop(&vc->ve.vdev.entity);
540 vc->streaming = false;
541 }
542
543 ret = _vb2_fop_release(file, NULL);
544
545 if (close) {
546 clear_bit(ST_CAPT_BUSY, &fimc->state);
547 fimc_pipeline_call(&vc->ve, close);
548 clear_bit(ST_CAPT_SUSPENDED, &fimc->state);
549
550 fimc_md_graph_lock(&vc->ve);
551 vc->ve.vdev.entity.use_count--;
552 fimc_md_graph_unlock(&vc->ve);
553 }
554
555 pm_runtime_put_sync(&fimc->pdev->dev);
556 mutex_unlock(&fimc->lock);
557
558 return ret;
559 }
560
561 static const struct v4l2_file_operations fimc_capture_fops = {
562 .owner = THIS_MODULE,
563 .open = fimc_capture_open,
564 .release = fimc_capture_release,
565 .poll = vb2_fop_poll,
566 .unlocked_ioctl = video_ioctl2,
567 .mmap = vb2_fop_mmap,
568 };
569
570 /*
571 * Format and crop negotiation helpers
572 */
573
574 static struct fimc_fmt *fimc_capture_try_format(struct fimc_ctx *ctx,
575 u32 *width, u32 *height,
576 u32 *code, u32 *fourcc, int pad)
577 {
578 bool rotation = ctx->rotation == 90 || ctx->rotation == 270;
579 struct fimc_dev *fimc = ctx->fimc_dev;
580 const struct fimc_variant *var = fimc->variant;
581 const struct fimc_pix_limit *pl = var->pix_limit;
582 struct fimc_frame *dst = &ctx->d_frame;
583 u32 depth, min_w, max_w, min_h, align_h = 3;
584 u32 mask = FMT_FLAGS_CAM;
585 struct fimc_fmt *ffmt;
586
587 /* Conversion from/to JPEG or User Defined format is not supported */
588 if (code && ctx->s_frame.fmt && pad == FIMC_SD_PAD_SOURCE &&
589 fimc_fmt_is_user_defined(ctx->s_frame.fmt->color))
590 *code = ctx->s_frame.fmt->mbus_code;
591
592 if (fourcc && *fourcc != V4L2_PIX_FMT_JPEG && pad == FIMC_SD_PAD_SOURCE)
593 mask |= FMT_FLAGS_M2M;
594
595 if (pad == FIMC_SD_PAD_SINK_FIFO)
596 mask = FMT_FLAGS_WRITEBACK;
597
598 ffmt = fimc_find_format(fourcc, code, mask, 0);
599 if (WARN_ON(!ffmt))
600 return NULL;
601
602 if (code)
603 *code = ffmt->mbus_code;
604 if (fourcc)
605 *fourcc = ffmt->fourcc;
606
607 if (pad != FIMC_SD_PAD_SOURCE) {
608 max_w = fimc_fmt_is_user_defined(ffmt->color) ?
609 pl->scaler_dis_w : pl->scaler_en_w;
610 /* Apply the camera input interface pixel constraints */
611 v4l_bound_align_image(width, max_t(u32, *width, 32), max_w, 4,
612 height, max_t(u32, *height, 32),
613 FIMC_CAMIF_MAX_HEIGHT,
614 fimc_fmt_is_user_defined(ffmt->color) ?
615 3 : 1,
616 0);
617 return ffmt;
618 }
619 /* Can't scale or crop in transparent (JPEG) transfer mode */
620 if (fimc_fmt_is_user_defined(ffmt->color)) {
621 *width = ctx->s_frame.f_width;
622 *height = ctx->s_frame.f_height;
623 return ffmt;
624 }
625 /* Apply the scaler and the output DMA constraints */
626 max_w = rotation ? pl->out_rot_en_w : pl->out_rot_dis_w;
627 if (ctx->state & FIMC_COMPOSE) {
628 min_w = dst->offs_h + dst->width;
629 min_h = dst->offs_v + dst->height;
630 } else {
631 min_w = var->min_out_pixsize;
632 min_h = var->min_out_pixsize;
633 }
634 if (var->min_vsize_align == 1 && !rotation)
635 align_h = fimc_fmt_is_rgb(ffmt->color) ? 0 : 1;
636
637 depth = fimc_get_format_depth(ffmt);
638 v4l_bound_align_image(width, min_w, max_w,
639 ffs(var->min_out_pixsize) - 1,
640 height, min_h, FIMC_CAMIF_MAX_HEIGHT,
641 align_h,
642 64/(ALIGN(depth, 8)));
643
644 dbg("pad%d: code: 0x%x, %dx%d. dst fmt: %dx%d",
645 pad, code ? *code : 0, *width, *height,
646 dst->f_width, dst->f_height);
647
648 return ffmt;
649 }
650
651 static void fimc_capture_try_selection(struct fimc_ctx *ctx,
652 struct v4l2_rect *r,
653 int target)
654 {
655 bool rotate = ctx->rotation == 90 || ctx->rotation == 270;
656 struct fimc_dev *fimc = ctx->fimc_dev;
657 const struct fimc_variant *var = fimc->variant;
658 const struct fimc_pix_limit *pl = var->pix_limit;
659 struct fimc_frame *sink = &ctx->s_frame;
660 u32 max_w, max_h, min_w = 0, min_h = 0, min_sz;
661 u32 align_sz = 0, align_h = 4;
662 u32 max_sc_h, max_sc_v;
663
664 /* In JPEG transparent transfer mode cropping is not supported */
665 if (fimc_fmt_is_user_defined(ctx->d_frame.fmt->color)) {
666 r->width = sink->f_width;
667 r->height = sink->f_height;
668 r->left = r->top = 0;
669 return;
670 }
671 if (target == V4L2_SEL_TGT_COMPOSE) {
672 if (ctx->rotation != 90 && ctx->rotation != 270)
673 align_h = 1;
674 max_sc_h = min(SCALER_MAX_HRATIO, 1 << (ffs(sink->width) - 3));
675 max_sc_v = min(SCALER_MAX_VRATIO, 1 << (ffs(sink->height) - 1));
676 min_sz = var->min_out_pixsize;
677 } else {
678 u32 depth = fimc_get_format_depth(sink->fmt);
679 align_sz = 64/ALIGN(depth, 8);
680 min_sz = var->min_inp_pixsize;
681 min_w = min_h = min_sz;
682 max_sc_h = max_sc_v = 1;
683 }
684 /*
685 * For the compose rectangle the following constraints must be met:
686 * - it must fit in the sink pad format rectangle (f_width/f_height);
687 * - maximum downscaling ratio is 64;
688 * - maximum crop size depends if the rotator is used or not;
689 * - the sink pad format width/height must be 4 multiple of the
690 * prescaler ratios determined by sink pad size and source pad crop,
691 * the prescaler ratio is returned by fimc_get_scaler_factor().
692 */
693 max_w = min_t(u32,
694 rotate ? pl->out_rot_en_w : pl->out_rot_dis_w,
695 rotate ? sink->f_height : sink->f_width);
696 max_h = min_t(u32, FIMC_CAMIF_MAX_HEIGHT, sink->f_height);
697
698 if (target == V4L2_SEL_TGT_COMPOSE) {
699 min_w = min_t(u32, max_w, sink->f_width / max_sc_h);
700 min_h = min_t(u32, max_h, sink->f_height / max_sc_v);
701 if (rotate) {
702 swap(max_sc_h, max_sc_v);
703 swap(min_w, min_h);
704 }
705 }
706 v4l_bound_align_image(&r->width, min_w, max_w, ffs(min_sz) - 1,
707 &r->height, min_h, max_h, align_h,
708 align_sz);
709 /* Adjust left/top if crop/compose rectangle is out of bounds */
710 r->left = clamp_t(u32, r->left, 0, sink->f_width - r->width);
711 r->top = clamp_t(u32, r->top, 0, sink->f_height - r->height);
712 r->left = round_down(r->left, var->hor_offs_align);
713
714 dbg("target %#x: (%d,%d)/%dx%d, sink fmt: %dx%d",
715 target, r->left, r->top, r->width, r->height,
716 sink->f_width, sink->f_height);
717 }
718
719 /*
720 * The video node ioctl operations
721 */
722 static int fimc_cap_querycap(struct file *file, void *priv,
723 struct v4l2_capability *cap)
724 {
725 struct fimc_dev *fimc = video_drvdata(file);
726
727 __fimc_vidioc_querycap(&fimc->pdev->dev, cap, V4L2_CAP_STREAMING |
728 V4L2_CAP_VIDEO_CAPTURE_MPLANE);
729 return 0;
730 }
731
732 static int fimc_cap_enum_fmt_mplane(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 strncpy(f->description, fmt->name, sizeof(f->description) - 1);
742 f->pixelformat = fmt->fourcc;
743 if (fmt->fourcc == MEDIA_BUS_FMT_JPEG_1X8)
744 f->flags |= V4L2_FMT_FLAG_COMPRESSED;
745 return 0;
746 }
747
748 static struct media_entity *fimc_pipeline_get_head(struct media_entity *me)
749 {
750 struct media_pad *pad = &me->pads[0];
751
752 while (!(pad->flags & MEDIA_PAD_FL_SOURCE)) {
753 pad = media_entity_remote_pad(pad);
754 if (!pad)
755 break;
756 me = pad->entity;
757 pad = &me->pads[0];
758 }
759
760 return me;
761 }
762
763 /**
764 * fimc_pipeline_try_format - negotiate and/or set formats at pipeline
765 * elements
766 * @ctx: FIMC capture context
767 * @tfmt: media bus format to try/set on subdevs
768 * @fmt_id: fimc pixel format id corresponding to returned @tfmt (output)
769 * @set: true to set format on subdevs, false to try only
770 */
771 static int fimc_pipeline_try_format(struct fimc_ctx *ctx,
772 struct v4l2_mbus_framefmt *tfmt,
773 struct fimc_fmt **fmt_id,
774 bool set)
775 {
776 struct fimc_dev *fimc = ctx->fimc_dev;
777 struct fimc_pipeline *p = to_fimc_pipeline(fimc->vid_cap.ve.pipe);
778 struct v4l2_subdev *sd = p->subdevs[IDX_SENSOR];
779 struct v4l2_subdev_format sfmt;
780 struct v4l2_mbus_framefmt *mf = &sfmt.format;
781 struct media_entity *me;
782 struct fimc_fmt *ffmt;
783 struct media_pad *pad;
784 int ret, i = 1;
785 u32 fcc;
786
787 if (WARN_ON(!sd || !tfmt))
788 return -EINVAL;
789
790 memset(&sfmt, 0, sizeof(sfmt));
791 sfmt.format = *tfmt;
792 sfmt.which = set ? V4L2_SUBDEV_FORMAT_ACTIVE : V4L2_SUBDEV_FORMAT_TRY;
793
794 me = fimc_pipeline_get_head(&sd->entity);
795
796 while (1) {
797 ffmt = fimc_find_format(NULL, mf->code != 0 ? &mf->code : NULL,
798 FMT_FLAGS_CAM, i++);
799 if (ffmt == NULL) {
800 /*
801 * Notify user-space if common pixel code for
802 * host and sensor does not exist.
803 */
804 return -EINVAL;
805 }
806 mf->code = tfmt->code = ffmt->mbus_code;
807
808 /* set format on all pipeline subdevs */
809 while (me != &fimc->vid_cap.subdev.entity) {
810 sd = media_entity_to_v4l2_subdev(me);
811
812 sfmt.pad = 0;
813 ret = v4l2_subdev_call(sd, pad, set_fmt, NULL, &sfmt);
814 if (ret)
815 return ret;
816
817 if (me->pads[0].flags & MEDIA_PAD_FL_SINK) {
818 sfmt.pad = me->num_pads - 1;
819 mf->code = tfmt->code;
820 ret = v4l2_subdev_call(sd, pad, set_fmt, NULL,
821 &sfmt);
822 if (ret)
823 return ret;
824 }
825
826 pad = media_entity_remote_pad(&me->pads[sfmt.pad]);
827 if (!pad)
828 return -EINVAL;
829 me = pad->entity;
830 }
831
832 if (mf->code != tfmt->code)
833 continue;
834
835 fcc = ffmt->fourcc;
836 tfmt->width = mf->width;
837 tfmt->height = mf->height;
838 ffmt = fimc_capture_try_format(ctx, &tfmt->width, &tfmt->height,
839 NULL, &fcc, FIMC_SD_PAD_SINK_CAM);
840 ffmt = fimc_capture_try_format(ctx, &tfmt->width, &tfmt->height,
841 NULL, &fcc, FIMC_SD_PAD_SOURCE);
842 if (ffmt && ffmt->mbus_code)
843 mf->code = ffmt->mbus_code;
844 if (mf->width != tfmt->width || mf->height != tfmt->height)
845 continue;
846 tfmt->code = mf->code;
847 break;
848 }
849
850 if (fmt_id && ffmt)
851 *fmt_id = ffmt;
852 *tfmt = *mf;
853
854 return 0;
855 }
856
857 /**
858 * fimc_get_sensor_frame_desc - query the sensor for media bus frame parameters
859 * @sensor: pointer to the sensor subdev
860 * @plane_fmt: provides plane sizes corresponding to the frame layout entries
861 * @try: true to set the frame parameters, false to query only
862 *
863 * This function is used by this driver only for compressed/blob data formats.
864 */
865 static int fimc_get_sensor_frame_desc(struct v4l2_subdev *sensor,
866 struct v4l2_plane_pix_format *plane_fmt,
867 unsigned int num_planes, bool try)
868 {
869 struct v4l2_mbus_frame_desc fd;
870 int i, ret;
871 int pad;
872
873 for (i = 0; i < num_planes; i++)
874 fd.entry[i].length = plane_fmt[i].sizeimage;
875
876 pad = sensor->entity.num_pads - 1;
877 if (try)
878 ret = v4l2_subdev_call(sensor, pad, set_frame_desc, pad, &fd);
879 else
880 ret = v4l2_subdev_call(sensor, pad, get_frame_desc, pad, &fd);
881
882 if (ret < 0)
883 return ret;
884
885 if (num_planes != fd.num_entries)
886 return -EINVAL;
887
888 for (i = 0; i < num_planes; i++)
889 plane_fmt[i].sizeimage = fd.entry[i].length;
890
891 if (fd.entry[0].length > FIMC_MAX_JPEG_BUF_SIZE) {
892 v4l2_err(sensor->v4l2_dev, "Unsupported buffer size: %u\n",
893 fd.entry[0].length);
894
895 return -EINVAL;
896 }
897
898 return 0;
899 }
900
901 static int fimc_cap_g_fmt_mplane(struct file *file, void *fh,
902 struct v4l2_format *f)
903 {
904 struct fimc_dev *fimc = video_drvdata(file);
905
906 __fimc_get_format(&fimc->vid_cap.ctx->d_frame, f);
907 return 0;
908 }
909
910 /*
911 * Try or set format on the fimc.X.capture video node and additionally
912 * on the whole pipeline if @try is false.
913 * Locking: the caller must _not_ hold the graph mutex.
914 */
915 static int __video_try_or_set_format(struct fimc_dev *fimc,
916 struct v4l2_format *f, bool try,
917 struct fimc_fmt **inp_fmt,
918 struct fimc_fmt **out_fmt)
919 {
920 struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
921 struct fimc_vid_cap *vc = &fimc->vid_cap;
922 struct exynos_video_entity *ve = &vc->ve;
923 struct fimc_ctx *ctx = vc->ctx;
924 unsigned int width = 0, height = 0;
925 int ret = 0;
926
927 /* Pre-configure format at the camera input interface, for JPEG only */
928 if (fimc_jpeg_fourcc(pix->pixelformat)) {
929 fimc_capture_try_format(ctx, &pix->width, &pix->height,
930 NULL, &pix->pixelformat,
931 FIMC_SD_PAD_SINK_CAM);
932 if (try) {
933 width = pix->width;
934 height = pix->height;
935 } else {
936 ctx->s_frame.f_width = pix->width;
937 ctx->s_frame.f_height = pix->height;
938 }
939 }
940
941 /* Try the format at the scaler and the DMA output */
942 *out_fmt = fimc_capture_try_format(ctx, &pix->width, &pix->height,
943 NULL, &pix->pixelformat,
944 FIMC_SD_PAD_SOURCE);
945 if (*out_fmt == NULL)
946 return -EINVAL;
947
948 /* Restore image width/height for JPEG (no resizing supported). */
949 if (try && fimc_jpeg_fourcc(pix->pixelformat)) {
950 pix->width = width;
951 pix->height = height;
952 }
953
954 /* Try to match format at the host and the sensor */
955 if (!vc->user_subdev_api) {
956 struct v4l2_mbus_framefmt mbus_fmt;
957 struct v4l2_mbus_framefmt *mf;
958
959 mf = try ? &mbus_fmt : &fimc->vid_cap.ci_fmt;
960
961 mf->code = (*out_fmt)->mbus_code;
962 mf->width = pix->width;
963 mf->height = pix->height;
964
965 fimc_md_graph_lock(ve);
966 ret = fimc_pipeline_try_format(ctx, mf, inp_fmt, try);
967 fimc_md_graph_unlock(ve);
968
969 if (ret < 0)
970 return ret;
971
972 pix->width = mf->width;
973 pix->height = mf->height;
974 }
975
976 fimc_adjust_mplane_format(*out_fmt, pix->width, pix->height, pix);
977
978 if ((*out_fmt)->flags & FMT_FLAGS_COMPRESSED) {
979 struct v4l2_subdev *sensor;
980
981 fimc_md_graph_lock(ve);
982
983 sensor = __fimc_md_get_subdev(ve->pipe, IDX_SENSOR);
984 if (sensor)
985 fimc_get_sensor_frame_desc(sensor, pix->plane_fmt,
986 (*out_fmt)->memplanes, try);
987 else
988 ret = -EPIPE;
989
990 fimc_md_graph_unlock(ve);
991 }
992
993 return ret;
994 }
995
996 static int fimc_cap_try_fmt_mplane(struct file *file, void *fh,
997 struct v4l2_format *f)
998 {
999 struct fimc_dev *fimc = video_drvdata(file);
1000 struct fimc_fmt *out_fmt = NULL, *inp_fmt = NULL;
1001
1002 return __video_try_or_set_format(fimc, f, true, &inp_fmt, &out_fmt);
1003 }
1004
1005 static void fimc_capture_mark_jpeg_xfer(struct fimc_ctx *ctx,
1006 enum fimc_color_fmt color)
1007 {
1008 bool jpeg = fimc_fmt_is_user_defined(color);
1009
1010 ctx->scaler.enabled = !jpeg;
1011 fimc_ctrls_activate(ctx, !jpeg);
1012
1013 if (jpeg)
1014 set_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state);
1015 else
1016 clear_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state);
1017 }
1018
1019 static int __fimc_capture_set_format(struct fimc_dev *fimc,
1020 struct v4l2_format *f)
1021 {
1022 struct fimc_vid_cap *vc = &fimc->vid_cap;
1023 struct fimc_ctx *ctx = vc->ctx;
1024 struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
1025 struct fimc_frame *ff = &ctx->d_frame;
1026 struct fimc_fmt *inp_fmt = NULL;
1027 int ret, i;
1028
1029 if (vb2_is_busy(&fimc->vid_cap.vbq))
1030 return -EBUSY;
1031
1032 ret = __video_try_or_set_format(fimc, f, false, &inp_fmt, &ff->fmt);
1033 if (ret < 0)
1034 return ret;
1035
1036 /* Update RGB Alpha control state and value range */
1037 fimc_alpha_ctrl_update(ctx);
1038
1039 for (i = 0; i < ff->fmt->memplanes; i++) {
1040 ff->bytesperline[i] = pix->plane_fmt[i].bytesperline;
1041 ff->payload[i] = pix->plane_fmt[i].sizeimage;
1042 }
1043
1044 set_frame_bounds(ff, pix->width, pix->height);
1045 /* Reset the composition rectangle if not yet configured */
1046 if (!(ctx->state & FIMC_COMPOSE))
1047 set_frame_crop(ff, 0, 0, pix->width, pix->height);
1048
1049 fimc_capture_mark_jpeg_xfer(ctx, ff->fmt->color);
1050
1051 /* Reset cropping and set format at the camera interface input */
1052 if (!vc->user_subdev_api) {
1053 ctx->s_frame.fmt = inp_fmt;
1054 set_frame_bounds(&ctx->s_frame, pix->width, pix->height);
1055 set_frame_crop(&ctx->s_frame, 0, 0, pix->width, pix->height);
1056 }
1057
1058 return ret;
1059 }
1060
1061 static int fimc_cap_s_fmt_mplane(struct file *file, void *priv,
1062 struct v4l2_format *f)
1063 {
1064 struct fimc_dev *fimc = video_drvdata(file);
1065
1066 return __fimc_capture_set_format(fimc, f);
1067 }
1068
1069 static int fimc_cap_enum_input(struct file *file, void *priv,
1070 struct v4l2_input *i)
1071 {
1072 struct fimc_dev *fimc = video_drvdata(file);
1073 struct exynos_video_entity *ve = &fimc->vid_cap.ve;
1074 struct v4l2_subdev *sd;
1075
1076 if (i->index != 0)
1077 return -EINVAL;
1078
1079 i->type = V4L2_INPUT_TYPE_CAMERA;
1080 fimc_md_graph_lock(ve);
1081 sd = __fimc_md_get_subdev(ve->pipe, IDX_SENSOR);
1082 fimc_md_graph_unlock(ve);
1083
1084 if (sd)
1085 strlcpy(i->name, sd->name, sizeof(i->name));
1086
1087 return 0;
1088 }
1089
1090 static int fimc_cap_s_input(struct file *file, void *priv, unsigned int i)
1091 {
1092 return i == 0 ? i : -EINVAL;
1093 }
1094
1095 static int fimc_cap_g_input(struct file *file, void *priv, unsigned int *i)
1096 {
1097 *i = 0;
1098 return 0;
1099 }
1100
1101 /**
1102 * fimc_pipeline_validate - check for formats inconsistencies
1103 * between source and sink pad of each link
1104 *
1105 * Return 0 if all formats match or -EPIPE otherwise.
1106 */
1107 static int fimc_pipeline_validate(struct fimc_dev *fimc)
1108 {
1109 struct v4l2_subdev_format sink_fmt, src_fmt;
1110 struct fimc_vid_cap *vc = &fimc->vid_cap;
1111 struct v4l2_subdev *sd = &vc->subdev;
1112 struct fimc_pipeline *p = to_fimc_pipeline(vc->ve.pipe);
1113 struct media_pad *sink_pad, *src_pad;
1114 int i, ret;
1115
1116 while (1) {
1117 /*
1118 * Find current entity sink pad and any remote sink pad linked
1119 * to it. We stop if there is no sink pad in current entity or
1120 * it is not linked to any other remote entity.
1121 */
1122 src_pad = NULL;
1123
1124 for (i = 0; i < sd->entity.num_pads; i++) {
1125 struct media_pad *p = &sd->entity.pads[i];
1126
1127 if (p->flags & MEDIA_PAD_FL_SINK) {
1128 sink_pad = p;
1129 src_pad = media_entity_remote_pad(sink_pad);
1130 if (src_pad)
1131 break;
1132 }
1133 }
1134
1135 if (!src_pad || !is_media_entity_v4l2_subdev(src_pad->entity))
1136 break;
1137
1138 /* Don't call FIMC subdev operation to avoid nested locking */
1139 if (sd == &vc->subdev) {
1140 struct fimc_frame *ff = &vc->ctx->s_frame;
1141 sink_fmt.format.width = ff->f_width;
1142 sink_fmt.format.height = ff->f_height;
1143 sink_fmt.format.code = ff->fmt ? ff->fmt->mbus_code : 0;
1144 } else {
1145 sink_fmt.pad = sink_pad->index;
1146 sink_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
1147 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &sink_fmt);
1148 if (ret < 0 && ret != -ENOIOCTLCMD)
1149 return -EPIPE;
1150 }
1151
1152 /* Retrieve format at the source pad */
1153 sd = media_entity_to_v4l2_subdev(src_pad->entity);
1154 src_fmt.pad = src_pad->index;
1155 src_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
1156 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &src_fmt);
1157 if (ret < 0 && ret != -ENOIOCTLCMD)
1158 return -EPIPE;
1159
1160 if (src_fmt.format.width != sink_fmt.format.width ||
1161 src_fmt.format.height != sink_fmt.format.height ||
1162 src_fmt.format.code != sink_fmt.format.code)
1163 return -EPIPE;
1164
1165 if (sd == p->subdevs[IDX_SENSOR] &&
1166 fimc_user_defined_mbus_fmt(src_fmt.format.code)) {
1167 struct v4l2_plane_pix_format plane_fmt[FIMC_MAX_PLANES];
1168 struct fimc_frame *frame = &vc->ctx->d_frame;
1169 unsigned int i;
1170
1171 ret = fimc_get_sensor_frame_desc(sd, plane_fmt,
1172 frame->fmt->memplanes,
1173 false);
1174 if (ret < 0)
1175 return -EPIPE;
1176
1177 for (i = 0; i < frame->fmt->memplanes; i++)
1178 if (frame->payload[i] < plane_fmt[i].sizeimage)
1179 return -EPIPE;
1180 }
1181 }
1182 return 0;
1183 }
1184
1185 static int fimc_cap_streamon(struct file *file, void *priv,
1186 enum v4l2_buf_type type)
1187 {
1188 struct fimc_dev *fimc = video_drvdata(file);
1189 struct fimc_vid_cap *vc = &fimc->vid_cap;
1190 struct media_entity *entity = &vc->ve.vdev.entity;
1191 struct fimc_source_info *si = NULL;
1192 struct v4l2_subdev *sd;
1193 int ret;
1194
1195 if (fimc_capture_active(fimc))
1196 return -EBUSY;
1197
1198 ret = media_entity_pipeline_start(entity, &vc->ve.pipe->mp);
1199 if (ret < 0)
1200 return ret;
1201
1202 sd = __fimc_md_get_subdev(vc->ve.pipe, IDX_SENSOR);
1203 if (sd)
1204 si = v4l2_get_subdev_hostdata(sd);
1205
1206 if (si == NULL) {
1207 ret = -EPIPE;
1208 goto err_p_stop;
1209 }
1210 /*
1211 * Save configuration data related to currently attached image
1212 * sensor or other data source, e.g. FIMC-IS.
1213 */
1214 vc->source_config = *si;
1215
1216 if (vc->input == GRP_ID_FIMC_IS)
1217 vc->source_config.fimc_bus_type = FIMC_BUS_TYPE_ISP_WRITEBACK;
1218
1219 if (vc->user_subdev_api) {
1220 ret = fimc_pipeline_validate(fimc);
1221 if (ret < 0)
1222 goto err_p_stop;
1223 }
1224
1225 ret = vb2_ioctl_streamon(file, priv, type);
1226 if (!ret) {
1227 vc->streaming = true;
1228 return ret;
1229 }
1230
1231 err_p_stop:
1232 media_entity_pipeline_stop(entity);
1233 return ret;
1234 }
1235
1236 static int fimc_cap_streamoff(struct file *file, void *priv,
1237 enum v4l2_buf_type type)
1238 {
1239 struct fimc_dev *fimc = video_drvdata(file);
1240 struct fimc_vid_cap *vc = &fimc->vid_cap;
1241 int ret;
1242
1243 ret = vb2_ioctl_streamoff(file, priv, type);
1244 if (ret < 0)
1245 return ret;
1246
1247 media_entity_pipeline_stop(&vc->ve.vdev.entity);
1248 vc->streaming = false;
1249 return 0;
1250 }
1251
1252 static int fimc_cap_reqbufs(struct file *file, void *priv,
1253 struct v4l2_requestbuffers *reqbufs)
1254 {
1255 struct fimc_dev *fimc = video_drvdata(file);
1256 int ret;
1257
1258 ret = vb2_ioctl_reqbufs(file, priv, reqbufs);
1259
1260 if (!ret)
1261 fimc->vid_cap.reqbufs_count = reqbufs->count;
1262
1263 return ret;
1264 }
1265
1266 static int fimc_cap_g_selection(struct file *file, void *fh,
1267 struct v4l2_selection *s)
1268 {
1269 struct fimc_dev *fimc = video_drvdata(file);
1270 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1271 struct fimc_frame *f = &ctx->s_frame;
1272
1273 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1274 return -EINVAL;
1275
1276 switch (s->target) {
1277 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
1278 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1279 f = &ctx->d_frame;
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 case V4L2_SEL_TGT_CROP:
1291 s->r.left = f->offs_h;
1292 s->r.top = f->offs_v;
1293 s->r.width = f->width;
1294 s->r.height = f->height;
1295 return 0;
1296 }
1297
1298 return -EINVAL;
1299 }
1300
1301 /* Return 1 if rectangle a is enclosed in rectangle b, or 0 otherwise. */
1302 static int enclosed_rectangle(struct v4l2_rect *a, struct v4l2_rect *b)
1303 {
1304 if (a->left < b->left || a->top < b->top)
1305 return 0;
1306 if (a->left + a->width > b->left + b->width)
1307 return 0;
1308 if (a->top + a->height > b->top + b->height)
1309 return 0;
1310
1311 return 1;
1312 }
1313
1314 static int fimc_cap_s_selection(struct file *file, void *fh,
1315 struct v4l2_selection *s)
1316 {
1317 struct fimc_dev *fimc = video_drvdata(file);
1318 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1319 struct v4l2_rect rect = s->r;
1320 struct fimc_frame *f;
1321 unsigned long flags;
1322
1323 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1324 return -EINVAL;
1325
1326 if (s->target == V4L2_SEL_TGT_COMPOSE)
1327 f = &ctx->d_frame;
1328 else if (s->target == V4L2_SEL_TGT_CROP)
1329 f = &ctx->s_frame;
1330 else
1331 return -EINVAL;
1332
1333 fimc_capture_try_selection(ctx, &rect, s->target);
1334
1335 if (s->flags & V4L2_SEL_FLAG_LE &&
1336 !enclosed_rectangle(&rect, &s->r))
1337 return -ERANGE;
1338
1339 if (s->flags & V4L2_SEL_FLAG_GE &&
1340 !enclosed_rectangle(&s->r, &rect))
1341 return -ERANGE;
1342
1343 s->r = rect;
1344 spin_lock_irqsave(&fimc->slock, flags);
1345 set_frame_crop(f, s->r.left, s->r.top, s->r.width,
1346 s->r.height);
1347 spin_unlock_irqrestore(&fimc->slock, flags);
1348
1349 set_bit(ST_CAPT_APPLY_CFG, &fimc->state);
1350 return 0;
1351 }
1352
1353 static const struct v4l2_ioctl_ops fimc_capture_ioctl_ops = {
1354 .vidioc_querycap = fimc_cap_querycap,
1355
1356 .vidioc_enum_fmt_vid_cap_mplane = fimc_cap_enum_fmt_mplane,
1357 .vidioc_try_fmt_vid_cap_mplane = fimc_cap_try_fmt_mplane,
1358 .vidioc_s_fmt_vid_cap_mplane = fimc_cap_s_fmt_mplane,
1359 .vidioc_g_fmt_vid_cap_mplane = fimc_cap_g_fmt_mplane,
1360
1361 .vidioc_reqbufs = fimc_cap_reqbufs,
1362 .vidioc_querybuf = vb2_ioctl_querybuf,
1363 .vidioc_qbuf = vb2_ioctl_qbuf,
1364 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1365 .vidioc_expbuf = vb2_ioctl_expbuf,
1366 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
1367 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1368
1369 .vidioc_streamon = fimc_cap_streamon,
1370 .vidioc_streamoff = fimc_cap_streamoff,
1371
1372 .vidioc_g_selection = fimc_cap_g_selection,
1373 .vidioc_s_selection = fimc_cap_s_selection,
1374
1375 .vidioc_enum_input = fimc_cap_enum_input,
1376 .vidioc_s_input = fimc_cap_s_input,
1377 .vidioc_g_input = fimc_cap_g_input,
1378 };
1379
1380 /* Capture subdev media entity operations */
1381 static int fimc_link_setup(struct media_entity *entity,
1382 const struct media_pad *local,
1383 const struct media_pad *remote, u32 flags)
1384 {
1385 struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
1386 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1387 struct fimc_vid_cap *vc = &fimc->vid_cap;
1388 struct v4l2_subdev *sensor;
1389
1390 if (!is_media_entity_v4l2_subdev(remote->entity))
1391 return -EINVAL;
1392
1393 if (WARN_ON(fimc == NULL))
1394 return 0;
1395
1396 dbg("%s --> %s, flags: 0x%x. input: 0x%x",
1397 local->entity->name, remote->entity->name, flags,
1398 fimc->vid_cap.input);
1399
1400 if (!(flags & MEDIA_LNK_FL_ENABLED)) {
1401 fimc->vid_cap.input = 0;
1402 return 0;
1403 }
1404
1405 if (vc->input != 0)
1406 return -EBUSY;
1407
1408 vc->input = sd->grp_id;
1409
1410 if (vc->user_subdev_api || vc->inh_sensor_ctrls)
1411 return 0;
1412
1413 /* Inherit V4L2 controls from the image sensor subdev. */
1414 sensor = fimc_find_remote_sensor(&vc->subdev.entity);
1415 if (sensor == NULL)
1416 return 0;
1417
1418 return v4l2_ctrl_add_handler(&vc->ctx->ctrls.handler,
1419 sensor->ctrl_handler, NULL);
1420 }
1421
1422 static const struct media_entity_operations fimc_sd_media_ops = {
1423 .link_setup = fimc_link_setup,
1424 };
1425
1426 /**
1427 * fimc_sensor_notify - v4l2_device notification from a sensor subdev
1428 * @sd: pointer to a subdev generating the notification
1429 * @notification: the notification type, must be S5P_FIMC_TX_END_NOTIFY
1430 * @arg: pointer to an u32 type integer that stores the frame payload value
1431 *
1432 * The End Of Frame notification sent by sensor subdev in its still capture
1433 * mode. If there is only a single VSYNC generated by the sensor at the
1434 * beginning of a frame transmission, FIMC does not issue the LastIrq
1435 * (end of frame) interrupt. And this notification is used to complete the
1436 * frame capture and returning a buffer to user-space. Subdev drivers should
1437 * call this notification from their last 'End of frame capture' interrupt.
1438 */
1439 void fimc_sensor_notify(struct v4l2_subdev *sd, unsigned int notification,
1440 void *arg)
1441 {
1442 struct fimc_source_info *si;
1443 struct fimc_vid_buffer *buf;
1444 struct fimc_md *fmd;
1445 struct fimc_dev *fimc;
1446 unsigned long flags;
1447
1448 if (sd == NULL)
1449 return;
1450
1451 si = v4l2_get_subdev_hostdata(sd);
1452 fmd = entity_to_fimc_mdev(&sd->entity);
1453
1454 spin_lock_irqsave(&fmd->slock, flags);
1455
1456 fimc = si ? source_to_sensor_info(si)->host : NULL;
1457
1458 if (fimc && arg && notification == S5P_FIMC_TX_END_NOTIFY &&
1459 test_bit(ST_CAPT_PEND, &fimc->state)) {
1460 unsigned long irq_flags;
1461 spin_lock_irqsave(&fimc->slock, irq_flags);
1462 if (!list_empty(&fimc->vid_cap.active_buf_q)) {
1463 buf = list_entry(fimc->vid_cap.active_buf_q.next,
1464 struct fimc_vid_buffer, list);
1465 vb2_set_plane_payload(&buf->vb.vb2_buf, 0,
1466 *((u32 *)arg));
1467 }
1468 fimc_capture_irq_handler(fimc, 1);
1469 fimc_deactivate_capture(fimc);
1470 spin_unlock_irqrestore(&fimc->slock, irq_flags);
1471 }
1472 spin_unlock_irqrestore(&fmd->slock, flags);
1473 }
1474
1475 static int fimc_subdev_enum_mbus_code(struct v4l2_subdev *sd,
1476 struct v4l2_subdev_pad_config *cfg,
1477 struct v4l2_subdev_mbus_code_enum *code)
1478 {
1479 struct fimc_fmt *fmt;
1480
1481 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, code->index);
1482 if (!fmt)
1483 return -EINVAL;
1484 code->code = fmt->mbus_code;
1485 return 0;
1486 }
1487
1488 static int fimc_subdev_get_fmt(struct v4l2_subdev *sd,
1489 struct v4l2_subdev_pad_config *cfg,
1490 struct v4l2_subdev_format *fmt)
1491 {
1492 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1493 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1494 struct fimc_frame *ff = &ctx->s_frame;
1495 struct v4l2_mbus_framefmt *mf;
1496
1497 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1498 mf = v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
1499 fmt->format = *mf;
1500 return 0;
1501 }
1502
1503 mf = &fmt->format;
1504 mutex_lock(&fimc->lock);
1505
1506 switch (fmt->pad) {
1507 case FIMC_SD_PAD_SOURCE:
1508 if (!WARN_ON(ff->fmt == NULL))
1509 mf->code = ff->fmt->mbus_code;
1510 /* Sink pads crop rectangle size */
1511 mf->width = ff->width;
1512 mf->height = ff->height;
1513 break;
1514 case FIMC_SD_PAD_SINK_FIFO:
1515 *mf = fimc->vid_cap.wb_fmt;
1516 break;
1517 case FIMC_SD_PAD_SINK_CAM:
1518 default:
1519 *mf = fimc->vid_cap.ci_fmt;
1520 break;
1521 }
1522
1523 mutex_unlock(&fimc->lock);
1524 mf->colorspace = V4L2_COLORSPACE_JPEG;
1525
1526 return 0;
1527 }
1528
1529 static int fimc_subdev_set_fmt(struct v4l2_subdev *sd,
1530 struct v4l2_subdev_pad_config *cfg,
1531 struct v4l2_subdev_format *fmt)
1532 {
1533 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1534 struct v4l2_mbus_framefmt *mf = &fmt->format;
1535 struct fimc_vid_cap *vc = &fimc->vid_cap;
1536 struct fimc_ctx *ctx = vc->ctx;
1537 struct fimc_frame *ff;
1538 struct fimc_fmt *ffmt;
1539
1540 dbg("pad%d: code: 0x%x, %dx%d",
1541 fmt->pad, mf->code, mf->width, mf->height);
1542
1543 if (fmt->pad == FIMC_SD_PAD_SOURCE && vb2_is_busy(&vc->vbq))
1544 return -EBUSY;
1545
1546 mutex_lock(&fimc->lock);
1547 ffmt = fimc_capture_try_format(ctx, &mf->width, &mf->height,
1548 &mf->code, NULL, fmt->pad);
1549 mutex_unlock(&fimc->lock);
1550 mf->colorspace = V4L2_COLORSPACE_JPEG;
1551
1552 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1553 mf = v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
1554 *mf = fmt->format;
1555 return 0;
1556 }
1557 /* There must be a bug in the driver if this happens */
1558 if (WARN_ON(ffmt == NULL))
1559 return -EINVAL;
1560
1561 /* Update RGB Alpha control state and value range */
1562 fimc_alpha_ctrl_update(ctx);
1563
1564 fimc_capture_mark_jpeg_xfer(ctx, ffmt->color);
1565 if (fmt->pad == FIMC_SD_PAD_SOURCE) {
1566 ff = &ctx->d_frame;
1567 /* Sink pads crop rectangle size */
1568 mf->width = ctx->s_frame.width;
1569 mf->height = ctx->s_frame.height;
1570 } else {
1571 ff = &ctx->s_frame;
1572 }
1573
1574 mutex_lock(&fimc->lock);
1575 set_frame_bounds(ff, mf->width, mf->height);
1576
1577 if (fmt->pad == FIMC_SD_PAD_SINK_FIFO)
1578 vc->wb_fmt = *mf;
1579 else if (fmt->pad == FIMC_SD_PAD_SINK_CAM)
1580 vc->ci_fmt = *mf;
1581
1582 ff->fmt = ffmt;
1583
1584 /* Reset the crop rectangle if required. */
1585 if (!(fmt->pad == FIMC_SD_PAD_SOURCE && (ctx->state & FIMC_COMPOSE)))
1586 set_frame_crop(ff, 0, 0, mf->width, mf->height);
1587
1588 if (fmt->pad != FIMC_SD_PAD_SOURCE)
1589 ctx->state &= ~FIMC_COMPOSE;
1590
1591 mutex_unlock(&fimc->lock);
1592 return 0;
1593 }
1594
1595 static int fimc_subdev_get_selection(struct v4l2_subdev *sd,
1596 struct v4l2_subdev_pad_config *cfg,
1597 struct v4l2_subdev_selection *sel)
1598 {
1599 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1600 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1601 struct fimc_frame *f = &ctx->s_frame;
1602 struct v4l2_rect *r = &sel->r;
1603 struct v4l2_rect *try_sel;
1604
1605 if (sel->pad == FIMC_SD_PAD_SOURCE)
1606 return -EINVAL;
1607
1608 mutex_lock(&fimc->lock);
1609
1610 switch (sel->target) {
1611 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1612 f = &ctx->d_frame;
1613 case V4L2_SEL_TGT_CROP_BOUNDS:
1614 r->width = f->o_width;
1615 r->height = f->o_height;
1616 r->left = 0;
1617 r->top = 0;
1618 mutex_unlock(&fimc->lock);
1619 return 0;
1620
1621 case V4L2_SEL_TGT_CROP:
1622 try_sel = v4l2_subdev_get_try_crop(sd, cfg, sel->pad);
1623 break;
1624 case V4L2_SEL_TGT_COMPOSE:
1625 try_sel = v4l2_subdev_get_try_compose(sd, cfg, sel->pad);
1626 f = &ctx->d_frame;
1627 break;
1628 default:
1629 mutex_unlock(&fimc->lock);
1630 return -EINVAL;
1631 }
1632
1633 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1634 sel->r = *try_sel;
1635 } else {
1636 r->left = f->offs_h;
1637 r->top = f->offs_v;
1638 r->width = f->width;
1639 r->height = f->height;
1640 }
1641
1642 dbg("target %#x: l:%d, t:%d, %dx%d, f_w: %d, f_h: %d",
1643 sel->pad, r->left, r->top, r->width, r->height,
1644 f->f_width, f->f_height);
1645
1646 mutex_unlock(&fimc->lock);
1647 return 0;
1648 }
1649
1650 static int fimc_subdev_set_selection(struct v4l2_subdev *sd,
1651 struct v4l2_subdev_pad_config *cfg,
1652 struct v4l2_subdev_selection *sel)
1653 {
1654 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1655 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1656 struct fimc_frame *f = &ctx->s_frame;
1657 struct v4l2_rect *r = &sel->r;
1658 struct v4l2_rect *try_sel;
1659 unsigned long flags;
1660
1661 if (sel->pad == FIMC_SD_PAD_SOURCE)
1662 return -EINVAL;
1663
1664 mutex_lock(&fimc->lock);
1665 fimc_capture_try_selection(ctx, r, V4L2_SEL_TGT_CROP);
1666
1667 switch (sel->target) {
1668 case V4L2_SEL_TGT_CROP:
1669 try_sel = v4l2_subdev_get_try_crop(sd, cfg, sel->pad);
1670 break;
1671 case V4L2_SEL_TGT_COMPOSE:
1672 try_sel = v4l2_subdev_get_try_compose(sd, cfg, sel->pad);
1673 f = &ctx->d_frame;
1674 break;
1675 default:
1676 mutex_unlock(&fimc->lock);
1677 return -EINVAL;
1678 }
1679
1680 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1681 *try_sel = sel->r;
1682 } else {
1683 spin_lock_irqsave(&fimc->slock, flags);
1684 set_frame_crop(f, r->left, r->top, r->width, r->height);
1685 set_bit(ST_CAPT_APPLY_CFG, &fimc->state);
1686 if (sel->target == V4L2_SEL_TGT_COMPOSE)
1687 ctx->state |= FIMC_COMPOSE;
1688 spin_unlock_irqrestore(&fimc->slock, flags);
1689 }
1690
1691 dbg("target %#x: (%d,%d)/%dx%d", sel->target, r->left, r->top,
1692 r->width, r->height);
1693
1694 mutex_unlock(&fimc->lock);
1695 return 0;
1696 }
1697
1698 static struct v4l2_subdev_pad_ops fimc_subdev_pad_ops = {
1699 .enum_mbus_code = fimc_subdev_enum_mbus_code,
1700 .get_selection = fimc_subdev_get_selection,
1701 .set_selection = fimc_subdev_set_selection,
1702 .get_fmt = fimc_subdev_get_fmt,
1703 .set_fmt = fimc_subdev_set_fmt,
1704 };
1705
1706 static struct v4l2_subdev_ops fimc_subdev_ops = {
1707 .pad = &fimc_subdev_pad_ops,
1708 };
1709
1710 /* Set default format at the sensor and host interface */
1711 static int fimc_capture_set_default_format(struct fimc_dev *fimc)
1712 {
1713 struct v4l2_format fmt = {
1714 .type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
1715 .fmt.pix_mp = {
1716 .width = FIMC_DEFAULT_WIDTH,
1717 .height = FIMC_DEFAULT_HEIGHT,
1718 .pixelformat = V4L2_PIX_FMT_YUYV,
1719 .field = V4L2_FIELD_NONE,
1720 .colorspace = V4L2_COLORSPACE_JPEG,
1721 },
1722 };
1723
1724 return __fimc_capture_set_format(fimc, &fmt);
1725 }
1726
1727 /* fimc->lock must be already initialized */
1728 static int fimc_register_capture_device(struct fimc_dev *fimc,
1729 struct v4l2_device *v4l2_dev)
1730 {
1731 struct video_device *vfd = &fimc->vid_cap.ve.vdev;
1732 struct vb2_queue *q = &fimc->vid_cap.vbq;
1733 struct fimc_ctx *ctx;
1734 struct fimc_vid_cap *vid_cap;
1735 struct fimc_fmt *fmt;
1736 int ret = -ENOMEM;
1737
1738 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
1739 if (!ctx)
1740 return -ENOMEM;
1741
1742 ctx->fimc_dev = fimc;
1743 ctx->in_path = FIMC_IO_CAMERA;
1744 ctx->out_path = FIMC_IO_DMA;
1745 ctx->state = FIMC_CTX_CAP;
1746 ctx->s_frame.fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, 0);
1747 ctx->d_frame.fmt = ctx->s_frame.fmt;
1748
1749 memset(vfd, 0, sizeof(*vfd));
1750 snprintf(vfd->name, sizeof(vfd->name), "fimc.%d.capture", fimc->id);
1751
1752 vfd->fops = &fimc_capture_fops;
1753 vfd->ioctl_ops = &fimc_capture_ioctl_ops;
1754 vfd->v4l2_dev = v4l2_dev;
1755 vfd->minor = -1;
1756 vfd->release = video_device_release_empty;
1757 vfd->queue = q;
1758 vfd->lock = &fimc->lock;
1759
1760 video_set_drvdata(vfd, fimc);
1761 vid_cap = &fimc->vid_cap;
1762 vid_cap->active_buf_cnt = 0;
1763 vid_cap->reqbufs_count = 0;
1764 vid_cap->ctx = ctx;
1765
1766 INIT_LIST_HEAD(&vid_cap->pending_buf_q);
1767 INIT_LIST_HEAD(&vid_cap->active_buf_q);
1768
1769 memset(q, 0, sizeof(*q));
1770 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1771 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1772 q->drv_priv = ctx;
1773 q->ops = &fimc_capture_qops;
1774 q->mem_ops = &vb2_dma_contig_memops;
1775 q->buf_struct_size = sizeof(struct fimc_vid_buffer);
1776 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1777 q->lock = &fimc->lock;
1778 q->dev = &fimc->pdev->dev;
1779
1780 ret = vb2_queue_init(q);
1781 if (ret)
1782 goto err_free_ctx;
1783
1784 /* Default format configuration */
1785 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, 0);
1786 vid_cap->ci_fmt.width = FIMC_DEFAULT_WIDTH;
1787 vid_cap->ci_fmt.height = FIMC_DEFAULT_HEIGHT;
1788 vid_cap->ci_fmt.code = fmt->mbus_code;
1789
1790 ctx->s_frame.width = FIMC_DEFAULT_WIDTH;
1791 ctx->s_frame.height = FIMC_DEFAULT_HEIGHT;
1792 ctx->s_frame.fmt = fmt;
1793
1794 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_WRITEBACK, 0);
1795 vid_cap->wb_fmt = vid_cap->ci_fmt;
1796 vid_cap->wb_fmt.code = fmt->mbus_code;
1797
1798 vid_cap->vd_pad.flags = MEDIA_PAD_FL_SINK;
1799 vfd->entity.function = MEDIA_ENT_F_PROC_VIDEO_SCALER;
1800 ret = media_entity_pads_init(&vfd->entity, 1, &vid_cap->vd_pad);
1801 if (ret)
1802 goto err_free_ctx;
1803
1804 ret = fimc_ctrls_create(ctx);
1805 if (ret)
1806 goto err_me_cleanup;
1807
1808 ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1);
1809 if (ret)
1810 goto err_ctrl_free;
1811
1812 v4l2_info(v4l2_dev, "Registered %s as /dev/%s\n",
1813 vfd->name, video_device_node_name(vfd));
1814
1815 vfd->ctrl_handler = &ctx->ctrls.handler;
1816 return 0;
1817
1818 err_ctrl_free:
1819 fimc_ctrls_delete(ctx);
1820 err_me_cleanup:
1821 media_entity_cleanup(&vfd->entity);
1822 err_free_ctx:
1823 kfree(ctx);
1824 return ret;
1825 }
1826
1827 static int fimc_capture_subdev_registered(struct v4l2_subdev *sd)
1828 {
1829 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1830 int ret;
1831
1832 if (fimc == NULL)
1833 return -ENXIO;
1834
1835 ret = fimc_register_m2m_device(fimc, sd->v4l2_dev);
1836 if (ret)
1837 return ret;
1838
1839 fimc->vid_cap.ve.pipe = v4l2_get_subdev_hostdata(sd);
1840
1841 ret = fimc_register_capture_device(fimc, sd->v4l2_dev);
1842 if (ret) {
1843 fimc_unregister_m2m_device(fimc);
1844 fimc->vid_cap.ve.pipe = NULL;
1845 }
1846
1847 return ret;
1848 }
1849
1850 static void fimc_capture_subdev_unregistered(struct v4l2_subdev *sd)
1851 {
1852 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1853 struct video_device *vdev;
1854
1855 if (fimc == NULL)
1856 return;
1857
1858 mutex_lock(&fimc->lock);
1859
1860 fimc_unregister_m2m_device(fimc);
1861 vdev = &fimc->vid_cap.ve.vdev;
1862
1863 if (video_is_registered(vdev)) {
1864 video_unregister_device(vdev);
1865 media_entity_cleanup(&vdev->entity);
1866 fimc_ctrls_delete(fimc->vid_cap.ctx);
1867 fimc->vid_cap.ve.pipe = NULL;
1868 }
1869 kfree(fimc->vid_cap.ctx);
1870 fimc->vid_cap.ctx = NULL;
1871
1872 mutex_unlock(&fimc->lock);
1873 }
1874
1875 static const struct v4l2_subdev_internal_ops fimc_capture_sd_internal_ops = {
1876 .registered = fimc_capture_subdev_registered,
1877 .unregistered = fimc_capture_subdev_unregistered,
1878 };
1879
1880 int fimc_initialize_capture_subdev(struct fimc_dev *fimc)
1881 {
1882 struct v4l2_subdev *sd = &fimc->vid_cap.subdev;
1883 int ret;
1884
1885 v4l2_subdev_init(sd, &fimc_subdev_ops);
1886 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1887 snprintf(sd->name, sizeof(sd->name), "FIMC.%d", fimc->id);
1888
1889 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK_CAM].flags = MEDIA_PAD_FL_SINK;
1890 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK_FIFO].flags = MEDIA_PAD_FL_SINK;
1891 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
1892 ret = media_entity_pads_init(&sd->entity, FIMC_SD_PADS_NUM,
1893 fimc->vid_cap.sd_pads);
1894 if (ret)
1895 return ret;
1896
1897 sd->entity.ops = &fimc_sd_media_ops;
1898 sd->internal_ops = &fimc_capture_sd_internal_ops;
1899 v4l2_set_subdevdata(sd, fimc);
1900 return 0;
1901 }
1902
1903 void fimc_unregister_capture_subdev(struct fimc_dev *fimc)
1904 {
1905 struct v4l2_subdev *sd = &fimc->vid_cap.subdev;
1906
1907 v4l2_device_unregister_subdev(sd);
1908 media_entity_cleanup(&sd->entity);
1909 v4l2_set_subdevdata(sd, NULL);
1910 }
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