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
fimc_capture_hw_init(struct fimc_dev * fimc)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 */
fimc_capture_state_cleanup(struct fimc_dev * fimc,bool suspend)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
fimc_stop_capture(struct fimc_dev * fimc,bool suspend)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 */
fimc_capture_config_update(struct fimc_ctx * ctx)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
fimc_capture_irq_handler(struct fimc_dev * fimc,int deq_buf)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 v4l2_get_timestamp(&v_buf->vb.timestamp);
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
start_streaming(struct vb2_queue * q,unsigned int count)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
stop_streaming(struct vb2_queue * q)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
fimc_capture_suspend(struct fimc_dev * fimc)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
fimc_capture_resume(struct fimc_dev * fimc)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
queue_setup(struct vb2_queue * vq,const void * parg,unsigned int * num_buffers,unsigned int * num_planes,unsigned int sizes[],void * allocators[])341 static int queue_setup(struct vb2_queue *vq, const void *parg,
342 unsigned int *num_buffers, unsigned int *num_planes,
343 unsigned int sizes[], void *allocators[])
344 {
345 const struct v4l2_format *pfmt = parg;
346 const struct v4l2_pix_format_mplane *pixm = NULL;
347 struct fimc_ctx *ctx = vq->drv_priv;
348 struct fimc_frame *frame = &ctx->d_frame;
349 struct fimc_fmt *fmt = frame->fmt;
350 unsigned long wh;
351 int i;
352
353 if (pfmt) {
354 pixm = &pfmt->fmt.pix_mp;
355 fmt = fimc_find_format(&pixm->pixelformat, NULL,
356 FMT_FLAGS_CAM | FMT_FLAGS_M2M, -1);
357 wh = pixm->width * pixm->height;
358 } else {
359 wh = frame->f_width * frame->f_height;
360 }
361
362 if (fmt == NULL)
363 return -EINVAL;
364
365 *num_planes = fmt->memplanes;
366
367 for (i = 0; i < fmt->memplanes; i++) {
368 unsigned int size = (wh * fmt->depth[i]) / 8;
369 if (pixm)
370 sizes[i] = max(size, pixm->plane_fmt[i].sizeimage);
371 else if (fimc_fmt_is_user_defined(fmt->color))
372 sizes[i] = frame->payload[i];
373 else
374 sizes[i] = max_t(u32, size, frame->payload[i]);
375
376 allocators[i] = ctx->fimc_dev->alloc_ctx;
377 }
378
379 return 0;
380 }
381
buffer_prepare(struct vb2_buffer * vb)382 static int buffer_prepare(struct vb2_buffer *vb)
383 {
384 struct vb2_queue *vq = vb->vb2_queue;
385 struct fimc_ctx *ctx = vq->drv_priv;
386 int i;
387
388 if (ctx->d_frame.fmt == NULL)
389 return -EINVAL;
390
391 for (i = 0; i < ctx->d_frame.fmt->memplanes; i++) {
392 unsigned long size = ctx->d_frame.payload[i];
393
394 if (vb2_plane_size(vb, i) < size) {
395 v4l2_err(&ctx->fimc_dev->vid_cap.ve.vdev,
396 "User buffer too small (%ld < %ld)\n",
397 vb2_plane_size(vb, i), size);
398 return -EINVAL;
399 }
400 vb2_set_plane_payload(vb, i, size);
401 }
402
403 return 0;
404 }
405
buffer_queue(struct vb2_buffer * vb)406 static void buffer_queue(struct vb2_buffer *vb)
407 {
408 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
409 struct fimc_vid_buffer *buf
410 = container_of(vbuf, struct fimc_vid_buffer, vb);
411 struct fimc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
412 struct fimc_dev *fimc = ctx->fimc_dev;
413 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
414 struct exynos_video_entity *ve = &vid_cap->ve;
415 unsigned long flags;
416 int min_bufs;
417
418 spin_lock_irqsave(&fimc->slock, flags);
419 fimc_prepare_addr(ctx, &buf->vb.vb2_buf, &ctx->d_frame, &buf->paddr);
420
421 if (!test_bit(ST_CAPT_SUSPENDED, &fimc->state) &&
422 !test_bit(ST_CAPT_STREAM, &fimc->state) &&
423 vid_cap->active_buf_cnt < FIMC_MAX_OUT_BUFS) {
424 /* Setup the buffer directly for processing. */
425 int buf_id = (vid_cap->reqbufs_count == 1) ? -1 :
426 vid_cap->buf_index;
427
428 fimc_hw_set_output_addr(fimc, &buf->paddr, buf_id);
429 buf->index = vid_cap->buf_index;
430 fimc_active_queue_add(vid_cap, buf);
431
432 if (++vid_cap->buf_index >= FIMC_MAX_OUT_BUFS)
433 vid_cap->buf_index = 0;
434 } else {
435 fimc_pending_queue_add(vid_cap, buf);
436 }
437
438 min_bufs = vid_cap->reqbufs_count > 1 ? 2 : 1;
439
440
441 if (vb2_is_streaming(&vid_cap->vbq) &&
442 vid_cap->active_buf_cnt >= min_bufs &&
443 !test_and_set_bit(ST_CAPT_STREAM, &fimc->state)) {
444 int ret;
445
446 fimc_activate_capture(ctx);
447 spin_unlock_irqrestore(&fimc->slock, flags);
448
449 if (test_and_set_bit(ST_CAPT_ISP_STREAM, &fimc->state))
450 return;
451
452 ret = fimc_pipeline_call(ve, set_stream, 1);
453 if (ret < 0)
454 v4l2_err(&ve->vdev, "stream on failed: %d\n", ret);
455 return;
456 }
457 spin_unlock_irqrestore(&fimc->slock, flags);
458 }
459
460 static struct vb2_ops fimc_capture_qops = {
461 .queue_setup = queue_setup,
462 .buf_prepare = buffer_prepare,
463 .buf_queue = buffer_queue,
464 .wait_prepare = vb2_ops_wait_prepare,
465 .wait_finish = vb2_ops_wait_finish,
466 .start_streaming = start_streaming,
467 .stop_streaming = stop_streaming,
468 };
469
470 static int fimc_capture_set_default_format(struct fimc_dev *fimc);
471
fimc_capture_open(struct file * file)472 static int fimc_capture_open(struct file *file)
473 {
474 struct fimc_dev *fimc = video_drvdata(file);
475 struct fimc_vid_cap *vc = &fimc->vid_cap;
476 struct exynos_video_entity *ve = &vc->ve;
477 int ret = -EBUSY;
478
479 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
480
481 mutex_lock(&fimc->lock);
482
483 if (fimc_m2m_active(fimc))
484 goto unlock;
485
486 set_bit(ST_CAPT_BUSY, &fimc->state);
487 ret = pm_runtime_get_sync(&fimc->pdev->dev);
488 if (ret < 0)
489 goto unlock;
490
491 ret = v4l2_fh_open(file);
492 if (ret) {
493 pm_runtime_put_sync(&fimc->pdev->dev);
494 goto unlock;
495 }
496
497 if (v4l2_fh_is_singular_file(file)) {
498 fimc_md_graph_lock(ve);
499
500 ret = fimc_pipeline_call(ve, open, &ve->vdev.entity, true);
501
502 if (ret == 0 && vc->user_subdev_api && vc->inh_sensor_ctrls) {
503 /*
504 * Recreate controls of the the video node to drop
505 * any controls inherited from the sensor subdev.
506 */
507 fimc_ctrls_delete(vc->ctx);
508
509 ret = fimc_ctrls_create(vc->ctx);
510 if (ret == 0)
511 vc->inh_sensor_ctrls = false;
512 }
513 if (ret == 0)
514 ve->vdev.entity.use_count++;
515
516 fimc_md_graph_unlock(ve);
517
518 if (ret == 0)
519 ret = fimc_capture_set_default_format(fimc);
520
521 if (ret < 0) {
522 clear_bit(ST_CAPT_BUSY, &fimc->state);
523 pm_runtime_put_sync(&fimc->pdev->dev);
524 v4l2_fh_release(file);
525 }
526 }
527 unlock:
528 mutex_unlock(&fimc->lock);
529 return ret;
530 }
531
fimc_capture_release(struct file * file)532 static int fimc_capture_release(struct file *file)
533 {
534 struct fimc_dev *fimc = video_drvdata(file);
535 struct fimc_vid_cap *vc = &fimc->vid_cap;
536 bool close = v4l2_fh_is_singular_file(file);
537 int ret;
538
539 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
540
541 mutex_lock(&fimc->lock);
542
543 if (close && vc->streaming) {
544 media_entity_pipeline_stop(&vc->ve.vdev.entity);
545 vc->streaming = false;
546 }
547
548 ret = _vb2_fop_release(file, NULL);
549
550 if (close) {
551 clear_bit(ST_CAPT_BUSY, &fimc->state);
552 fimc_pipeline_call(&vc->ve, close);
553 clear_bit(ST_CAPT_SUSPENDED, &fimc->state);
554
555 fimc_md_graph_lock(&vc->ve);
556 vc->ve.vdev.entity.use_count--;
557 fimc_md_graph_unlock(&vc->ve);
558 }
559
560 pm_runtime_put_sync(&fimc->pdev->dev);
561 mutex_unlock(&fimc->lock);
562
563 return ret;
564 }
565
566 static const struct v4l2_file_operations fimc_capture_fops = {
567 .owner = THIS_MODULE,
568 .open = fimc_capture_open,
569 .release = fimc_capture_release,
570 .poll = vb2_fop_poll,
571 .unlocked_ioctl = video_ioctl2,
572 .mmap = vb2_fop_mmap,
573 };
574
575 /*
576 * Format and crop negotiation helpers
577 */
578
fimc_capture_try_format(struct fimc_ctx * ctx,u32 * width,u32 * height,u32 * code,u32 * fourcc,int pad)579 static struct fimc_fmt *fimc_capture_try_format(struct fimc_ctx *ctx,
580 u32 *width, u32 *height,
581 u32 *code, u32 *fourcc, int pad)
582 {
583 bool rotation = ctx->rotation == 90 || ctx->rotation == 270;
584 struct fimc_dev *fimc = ctx->fimc_dev;
585 const struct fimc_variant *var = fimc->variant;
586 const struct fimc_pix_limit *pl = var->pix_limit;
587 struct fimc_frame *dst = &ctx->d_frame;
588 u32 depth, min_w, max_w, min_h, align_h = 3;
589 u32 mask = FMT_FLAGS_CAM;
590 struct fimc_fmt *ffmt;
591
592 /* Conversion from/to JPEG or User Defined format is not supported */
593 if (code && ctx->s_frame.fmt && pad == FIMC_SD_PAD_SOURCE &&
594 fimc_fmt_is_user_defined(ctx->s_frame.fmt->color))
595 *code = ctx->s_frame.fmt->mbus_code;
596
597 if (fourcc && *fourcc != V4L2_PIX_FMT_JPEG && pad == FIMC_SD_PAD_SOURCE)
598 mask |= FMT_FLAGS_M2M;
599
600 if (pad == FIMC_SD_PAD_SINK_FIFO)
601 mask = FMT_FLAGS_WRITEBACK;
602
603 ffmt = fimc_find_format(fourcc, code, mask, 0);
604 if (WARN_ON(!ffmt))
605 return NULL;
606
607 if (code)
608 *code = ffmt->mbus_code;
609 if (fourcc)
610 *fourcc = ffmt->fourcc;
611
612 if (pad != FIMC_SD_PAD_SOURCE) {
613 max_w = fimc_fmt_is_user_defined(ffmt->color) ?
614 pl->scaler_dis_w : pl->scaler_en_w;
615 /* Apply the camera input interface pixel constraints */
616 v4l_bound_align_image(width, max_t(u32, *width, 32), max_w, 4,
617 height, max_t(u32, *height, 32),
618 FIMC_CAMIF_MAX_HEIGHT,
619 fimc_fmt_is_user_defined(ffmt->color) ?
620 3 : 1,
621 0);
622 return ffmt;
623 }
624 /* Can't scale or crop in transparent (JPEG) transfer mode */
625 if (fimc_fmt_is_user_defined(ffmt->color)) {
626 *width = ctx->s_frame.f_width;
627 *height = ctx->s_frame.f_height;
628 return ffmt;
629 }
630 /* Apply the scaler and the output DMA constraints */
631 max_w = rotation ? pl->out_rot_en_w : pl->out_rot_dis_w;
632 if (ctx->state & FIMC_COMPOSE) {
633 min_w = dst->offs_h + dst->width;
634 min_h = dst->offs_v + dst->height;
635 } else {
636 min_w = var->min_out_pixsize;
637 min_h = var->min_out_pixsize;
638 }
639 if (var->min_vsize_align == 1 && !rotation)
640 align_h = fimc_fmt_is_rgb(ffmt->color) ? 0 : 1;
641
642 depth = fimc_get_format_depth(ffmt);
643 v4l_bound_align_image(width, min_w, max_w,
644 ffs(var->min_out_pixsize) - 1,
645 height, min_h, FIMC_CAMIF_MAX_HEIGHT,
646 align_h,
647 64/(ALIGN(depth, 8)));
648
649 dbg("pad%d: code: 0x%x, %dx%d. dst fmt: %dx%d",
650 pad, code ? *code : 0, *width, *height,
651 dst->f_width, dst->f_height);
652
653 return ffmt;
654 }
655
fimc_capture_try_selection(struct fimc_ctx * ctx,struct v4l2_rect * r,int target)656 static void fimc_capture_try_selection(struct fimc_ctx *ctx,
657 struct v4l2_rect *r,
658 int target)
659 {
660 bool rotate = ctx->rotation == 90 || ctx->rotation == 270;
661 struct fimc_dev *fimc = ctx->fimc_dev;
662 const struct fimc_variant *var = fimc->variant;
663 const struct fimc_pix_limit *pl = var->pix_limit;
664 struct fimc_frame *sink = &ctx->s_frame;
665 u32 max_w, max_h, min_w = 0, min_h = 0, min_sz;
666 u32 align_sz = 0, align_h = 4;
667 u32 max_sc_h, max_sc_v;
668
669 /* In JPEG transparent transfer mode cropping is not supported */
670 if (fimc_fmt_is_user_defined(ctx->d_frame.fmt->color)) {
671 r->width = sink->f_width;
672 r->height = sink->f_height;
673 r->left = r->top = 0;
674 return;
675 }
676 if (target == V4L2_SEL_TGT_COMPOSE) {
677 if (ctx->rotation != 90 && ctx->rotation != 270)
678 align_h = 1;
679 max_sc_h = min(SCALER_MAX_HRATIO, 1 << (ffs(sink->width) - 3));
680 max_sc_v = min(SCALER_MAX_VRATIO, 1 << (ffs(sink->height) - 1));
681 min_sz = var->min_out_pixsize;
682 } else {
683 u32 depth = fimc_get_format_depth(sink->fmt);
684 align_sz = 64/ALIGN(depth, 8);
685 min_sz = var->min_inp_pixsize;
686 min_w = min_h = min_sz;
687 max_sc_h = max_sc_v = 1;
688 }
689 /*
690 * For the compose rectangle the following constraints must be met:
691 * - it must fit in the sink pad format rectangle (f_width/f_height);
692 * - maximum downscaling ratio is 64;
693 * - maximum crop size depends if the rotator is used or not;
694 * - the sink pad format width/height must be 4 multiple of the
695 * prescaler ratios determined by sink pad size and source pad crop,
696 * the prescaler ratio is returned by fimc_get_scaler_factor().
697 */
698 max_w = min_t(u32,
699 rotate ? pl->out_rot_en_w : pl->out_rot_dis_w,
700 rotate ? sink->f_height : sink->f_width);
701 max_h = min_t(u32, FIMC_CAMIF_MAX_HEIGHT, sink->f_height);
702
703 if (target == V4L2_SEL_TGT_COMPOSE) {
704 min_w = min_t(u32, max_w, sink->f_width / max_sc_h);
705 min_h = min_t(u32, max_h, sink->f_height / max_sc_v);
706 if (rotate) {
707 swap(max_sc_h, max_sc_v);
708 swap(min_w, min_h);
709 }
710 }
711 v4l_bound_align_image(&r->width, min_w, max_w, ffs(min_sz) - 1,
712 &r->height, min_h, max_h, align_h,
713 align_sz);
714 /* Adjust left/top if crop/compose rectangle is out of bounds */
715 r->left = clamp_t(u32, r->left, 0, sink->f_width - r->width);
716 r->top = clamp_t(u32, r->top, 0, sink->f_height - r->height);
717 r->left = round_down(r->left, var->hor_offs_align);
718
719 dbg("target %#x: (%d,%d)/%dx%d, sink fmt: %dx%d",
720 target, r->left, r->top, r->width, r->height,
721 sink->f_width, sink->f_height);
722 }
723
724 /*
725 * The video node ioctl operations
726 */
fimc_cap_querycap(struct file * file,void * priv,struct v4l2_capability * cap)727 static int fimc_cap_querycap(struct file *file, void *priv,
728 struct v4l2_capability *cap)
729 {
730 struct fimc_dev *fimc = video_drvdata(file);
731
732 __fimc_vidioc_querycap(&fimc->pdev->dev, cap, V4L2_CAP_STREAMING |
733 V4L2_CAP_VIDEO_CAPTURE_MPLANE);
734 return 0;
735 }
736
fimc_cap_enum_fmt_mplane(struct file * file,void * priv,struct v4l2_fmtdesc * f)737 static int fimc_cap_enum_fmt_mplane(struct file *file, void *priv,
738 struct v4l2_fmtdesc *f)
739 {
740 struct fimc_fmt *fmt;
741
742 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM | FMT_FLAGS_M2M,
743 f->index);
744 if (!fmt)
745 return -EINVAL;
746 strncpy(f->description, fmt->name, sizeof(f->description) - 1);
747 f->pixelformat = fmt->fourcc;
748 if (fmt->fourcc == MEDIA_BUS_FMT_JPEG_1X8)
749 f->flags |= V4L2_FMT_FLAG_COMPRESSED;
750 return 0;
751 }
752
fimc_pipeline_get_head(struct media_entity * me)753 static struct media_entity *fimc_pipeline_get_head(struct media_entity *me)
754 {
755 struct media_pad *pad = &me->pads[0];
756
757 while (!(pad->flags & MEDIA_PAD_FL_SOURCE)) {
758 pad = media_entity_remote_pad(pad);
759 if (!pad)
760 break;
761 me = pad->entity;
762 pad = &me->pads[0];
763 }
764
765 return me;
766 }
767
768 /**
769 * fimc_pipeline_try_format - negotiate and/or set formats at pipeline
770 * elements
771 * @ctx: FIMC capture context
772 * @tfmt: media bus format to try/set on subdevs
773 * @fmt_id: fimc pixel format id corresponding to returned @tfmt (output)
774 * @set: true to set format on subdevs, false to try only
775 */
fimc_pipeline_try_format(struct fimc_ctx * ctx,struct v4l2_mbus_framefmt * tfmt,struct fimc_fmt ** fmt_id,bool set)776 static int fimc_pipeline_try_format(struct fimc_ctx *ctx,
777 struct v4l2_mbus_framefmt *tfmt,
778 struct fimc_fmt **fmt_id,
779 bool set)
780 {
781 struct fimc_dev *fimc = ctx->fimc_dev;
782 struct fimc_pipeline *p = to_fimc_pipeline(fimc->vid_cap.ve.pipe);
783 struct v4l2_subdev *sd = p->subdevs[IDX_SENSOR];
784 struct v4l2_subdev_format sfmt;
785 struct v4l2_mbus_framefmt *mf = &sfmt.format;
786 struct media_entity *me;
787 struct fimc_fmt *ffmt;
788 struct media_pad *pad;
789 int ret, i = 1;
790 u32 fcc;
791
792 if (WARN_ON(!sd || !tfmt))
793 return -EINVAL;
794
795 memset(&sfmt, 0, sizeof(sfmt));
796 sfmt.format = *tfmt;
797 sfmt.which = set ? V4L2_SUBDEV_FORMAT_ACTIVE : V4L2_SUBDEV_FORMAT_TRY;
798
799 me = fimc_pipeline_get_head(&sd->entity);
800
801 while (1) {
802 ffmt = fimc_find_format(NULL, mf->code != 0 ? &mf->code : NULL,
803 FMT_FLAGS_CAM, i++);
804 if (ffmt == NULL) {
805 /*
806 * Notify user-space if common pixel code for
807 * host and sensor does not exist.
808 */
809 return -EINVAL;
810 }
811 mf->code = tfmt->code = ffmt->mbus_code;
812
813 /* set format on all pipeline subdevs */
814 while (me != &fimc->vid_cap.subdev.entity) {
815 sd = media_entity_to_v4l2_subdev(me);
816
817 sfmt.pad = 0;
818 ret = v4l2_subdev_call(sd, pad, set_fmt, NULL, &sfmt);
819 if (ret)
820 return ret;
821
822 if (me->pads[0].flags & MEDIA_PAD_FL_SINK) {
823 sfmt.pad = me->num_pads - 1;
824 mf->code = tfmt->code;
825 ret = v4l2_subdev_call(sd, pad, set_fmt, NULL,
826 &sfmt);
827 if (ret)
828 return ret;
829 }
830
831 pad = media_entity_remote_pad(&me->pads[sfmt.pad]);
832 if (!pad)
833 return -EINVAL;
834 me = pad->entity;
835 }
836
837 if (mf->code != tfmt->code)
838 continue;
839
840 fcc = ffmt->fourcc;
841 tfmt->width = mf->width;
842 tfmt->height = mf->height;
843 ffmt = fimc_capture_try_format(ctx, &tfmt->width, &tfmt->height,
844 NULL, &fcc, FIMC_SD_PAD_SINK_CAM);
845 ffmt = fimc_capture_try_format(ctx, &tfmt->width, &tfmt->height,
846 NULL, &fcc, FIMC_SD_PAD_SOURCE);
847 if (ffmt && ffmt->mbus_code)
848 mf->code = ffmt->mbus_code;
849 if (mf->width != tfmt->width || mf->height != tfmt->height)
850 continue;
851 tfmt->code = mf->code;
852 break;
853 }
854
855 if (fmt_id && ffmt)
856 *fmt_id = ffmt;
857 *tfmt = *mf;
858
859 return 0;
860 }
861
862 /**
863 * fimc_get_sensor_frame_desc - query the sensor for media bus frame parameters
864 * @sensor: pointer to the sensor subdev
865 * @plane_fmt: provides plane sizes corresponding to the frame layout entries
866 * @try: true to set the frame parameters, false to query only
867 *
868 * This function is used by this driver only for compressed/blob data formats.
869 */
fimc_get_sensor_frame_desc(struct v4l2_subdev * sensor,struct v4l2_plane_pix_format * plane_fmt,unsigned int num_planes,bool try)870 static int fimc_get_sensor_frame_desc(struct v4l2_subdev *sensor,
871 struct v4l2_plane_pix_format *plane_fmt,
872 unsigned int num_planes, bool try)
873 {
874 struct v4l2_mbus_frame_desc fd;
875 int i, ret;
876 int pad;
877
878 for (i = 0; i < num_planes; i++)
879 fd.entry[i].length = plane_fmt[i].sizeimage;
880
881 pad = sensor->entity.num_pads - 1;
882 if (try)
883 ret = v4l2_subdev_call(sensor, pad, set_frame_desc, pad, &fd);
884 else
885 ret = v4l2_subdev_call(sensor, pad, get_frame_desc, pad, &fd);
886
887 if (ret < 0)
888 return ret;
889
890 if (num_planes != fd.num_entries)
891 return -EINVAL;
892
893 for (i = 0; i < num_planes; i++)
894 plane_fmt[i].sizeimage = fd.entry[i].length;
895
896 if (fd.entry[0].length > FIMC_MAX_JPEG_BUF_SIZE) {
897 v4l2_err(sensor->v4l2_dev, "Unsupported buffer size: %u\n",
898 fd.entry[0].length);
899
900 return -EINVAL;
901 }
902
903 return 0;
904 }
905
fimc_cap_g_fmt_mplane(struct file * file,void * fh,struct v4l2_format * f)906 static int fimc_cap_g_fmt_mplane(struct file *file, void *fh,
907 struct v4l2_format *f)
908 {
909 struct fimc_dev *fimc = video_drvdata(file);
910
911 __fimc_get_format(&fimc->vid_cap.ctx->d_frame, f);
912 return 0;
913 }
914
915 /*
916 * Try or set format on the fimc.X.capture video node and additionally
917 * on the whole pipeline if @try is false.
918 * Locking: the caller must _not_ hold the graph mutex.
919 */
__video_try_or_set_format(struct fimc_dev * fimc,struct v4l2_format * f,bool try,struct fimc_fmt ** inp_fmt,struct fimc_fmt ** out_fmt)920 static int __video_try_or_set_format(struct fimc_dev *fimc,
921 struct v4l2_format *f, bool try,
922 struct fimc_fmt **inp_fmt,
923 struct fimc_fmt **out_fmt)
924 {
925 struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
926 struct fimc_vid_cap *vc = &fimc->vid_cap;
927 struct exynos_video_entity *ve = &vc->ve;
928 struct fimc_ctx *ctx = vc->ctx;
929 unsigned int width = 0, height = 0;
930 int ret = 0;
931
932 /* Pre-configure format at the camera input interface, for JPEG only */
933 if (fimc_jpeg_fourcc(pix->pixelformat)) {
934 fimc_capture_try_format(ctx, &pix->width, &pix->height,
935 NULL, &pix->pixelformat,
936 FIMC_SD_PAD_SINK_CAM);
937 if (try) {
938 width = pix->width;
939 height = pix->height;
940 } else {
941 ctx->s_frame.f_width = pix->width;
942 ctx->s_frame.f_height = pix->height;
943 }
944 }
945
946 /* Try the format at the scaler and the DMA output */
947 *out_fmt = fimc_capture_try_format(ctx, &pix->width, &pix->height,
948 NULL, &pix->pixelformat,
949 FIMC_SD_PAD_SOURCE);
950 if (*out_fmt == NULL)
951 return -EINVAL;
952
953 /* Restore image width/height for JPEG (no resizing supported). */
954 if (try && fimc_jpeg_fourcc(pix->pixelformat)) {
955 pix->width = width;
956 pix->height = height;
957 }
958
959 /* Try to match format at the host and the sensor */
960 if (!vc->user_subdev_api) {
961 struct v4l2_mbus_framefmt mbus_fmt;
962 struct v4l2_mbus_framefmt *mf;
963
964 mf = try ? &mbus_fmt : &fimc->vid_cap.ci_fmt;
965
966 mf->code = (*out_fmt)->mbus_code;
967 mf->width = pix->width;
968 mf->height = pix->height;
969
970 fimc_md_graph_lock(ve);
971 ret = fimc_pipeline_try_format(ctx, mf, inp_fmt, try);
972 fimc_md_graph_unlock(ve);
973
974 if (ret < 0)
975 return ret;
976
977 pix->width = mf->width;
978 pix->height = mf->height;
979 }
980
981 fimc_adjust_mplane_format(*out_fmt, pix->width, pix->height, pix);
982
983 if ((*out_fmt)->flags & FMT_FLAGS_COMPRESSED) {
984 struct v4l2_subdev *sensor;
985
986 fimc_md_graph_lock(ve);
987
988 sensor = __fimc_md_get_subdev(ve->pipe, IDX_SENSOR);
989 if (sensor)
990 fimc_get_sensor_frame_desc(sensor, pix->plane_fmt,
991 (*out_fmt)->memplanes, try);
992 else
993 ret = -EPIPE;
994
995 fimc_md_graph_unlock(ve);
996 }
997
998 return ret;
999 }
1000
fimc_cap_try_fmt_mplane(struct file * file,void * fh,struct v4l2_format * f)1001 static int fimc_cap_try_fmt_mplane(struct file *file, void *fh,
1002 struct v4l2_format *f)
1003 {
1004 struct fimc_dev *fimc = video_drvdata(file);
1005 struct fimc_fmt *out_fmt = NULL, *inp_fmt = NULL;
1006
1007 return __video_try_or_set_format(fimc, f, true, &inp_fmt, &out_fmt);
1008 }
1009
fimc_capture_mark_jpeg_xfer(struct fimc_ctx * ctx,enum fimc_color_fmt color)1010 static void fimc_capture_mark_jpeg_xfer(struct fimc_ctx *ctx,
1011 enum fimc_color_fmt color)
1012 {
1013 bool jpeg = fimc_fmt_is_user_defined(color);
1014
1015 ctx->scaler.enabled = !jpeg;
1016 fimc_ctrls_activate(ctx, !jpeg);
1017
1018 if (jpeg)
1019 set_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state);
1020 else
1021 clear_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state);
1022 }
1023
__fimc_capture_set_format(struct fimc_dev * fimc,struct v4l2_format * f)1024 static int __fimc_capture_set_format(struct fimc_dev *fimc,
1025 struct v4l2_format *f)
1026 {
1027 struct fimc_vid_cap *vc = &fimc->vid_cap;
1028 struct fimc_ctx *ctx = vc->ctx;
1029 struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
1030 struct fimc_frame *ff = &ctx->d_frame;
1031 struct fimc_fmt *inp_fmt = NULL;
1032 int ret, i;
1033
1034 if (vb2_is_busy(&fimc->vid_cap.vbq))
1035 return -EBUSY;
1036
1037 ret = __video_try_or_set_format(fimc, f, false, &inp_fmt, &ff->fmt);
1038 if (ret < 0)
1039 return ret;
1040
1041 /* Update RGB Alpha control state and value range */
1042 fimc_alpha_ctrl_update(ctx);
1043
1044 for (i = 0; i < ff->fmt->memplanes; i++) {
1045 ff->bytesperline[i] = pix->plane_fmt[i].bytesperline;
1046 ff->payload[i] = pix->plane_fmt[i].sizeimage;
1047 }
1048
1049 set_frame_bounds(ff, pix->width, pix->height);
1050 /* Reset the composition rectangle if not yet configured */
1051 if (!(ctx->state & FIMC_COMPOSE))
1052 set_frame_crop(ff, 0, 0, pix->width, pix->height);
1053
1054 fimc_capture_mark_jpeg_xfer(ctx, ff->fmt->color);
1055
1056 /* Reset cropping and set format at the camera interface input */
1057 if (!vc->user_subdev_api) {
1058 ctx->s_frame.fmt = inp_fmt;
1059 set_frame_bounds(&ctx->s_frame, pix->width, pix->height);
1060 set_frame_crop(&ctx->s_frame, 0, 0, pix->width, pix->height);
1061 }
1062
1063 return ret;
1064 }
1065
fimc_cap_s_fmt_mplane(struct file * file,void * priv,struct v4l2_format * f)1066 static int fimc_cap_s_fmt_mplane(struct file *file, void *priv,
1067 struct v4l2_format *f)
1068 {
1069 struct fimc_dev *fimc = video_drvdata(file);
1070
1071 return __fimc_capture_set_format(fimc, f);
1072 }
1073
fimc_cap_enum_input(struct file * file,void * priv,struct v4l2_input * i)1074 static int fimc_cap_enum_input(struct file *file, void *priv,
1075 struct v4l2_input *i)
1076 {
1077 struct fimc_dev *fimc = video_drvdata(file);
1078 struct exynos_video_entity *ve = &fimc->vid_cap.ve;
1079 struct v4l2_subdev *sd;
1080
1081 if (i->index != 0)
1082 return -EINVAL;
1083
1084 i->type = V4L2_INPUT_TYPE_CAMERA;
1085 fimc_md_graph_lock(ve);
1086 sd = __fimc_md_get_subdev(ve->pipe, IDX_SENSOR);
1087 fimc_md_graph_unlock(ve);
1088
1089 if (sd)
1090 strlcpy(i->name, sd->name, sizeof(i->name));
1091
1092 return 0;
1093 }
1094
fimc_cap_s_input(struct file * file,void * priv,unsigned int i)1095 static int fimc_cap_s_input(struct file *file, void *priv, unsigned int i)
1096 {
1097 return i == 0 ? i : -EINVAL;
1098 }
1099
fimc_cap_g_input(struct file * file,void * priv,unsigned int * i)1100 static int fimc_cap_g_input(struct file *file, void *priv, unsigned int *i)
1101 {
1102 *i = 0;
1103 return 0;
1104 }
1105
1106 /**
1107 * fimc_pipeline_validate - check for formats inconsistencies
1108 * between source and sink pad of each link
1109 *
1110 * Return 0 if all formats match or -EPIPE otherwise.
1111 */
fimc_pipeline_validate(struct fimc_dev * fimc)1112 static int fimc_pipeline_validate(struct fimc_dev *fimc)
1113 {
1114 struct v4l2_subdev_format sink_fmt, src_fmt;
1115 struct fimc_vid_cap *vc = &fimc->vid_cap;
1116 struct v4l2_subdev *sd = &vc->subdev;
1117 struct fimc_pipeline *p = to_fimc_pipeline(vc->ve.pipe);
1118 struct media_pad *sink_pad, *src_pad;
1119 int i, ret;
1120
1121 while (1) {
1122 /*
1123 * Find current entity sink pad and any remote sink pad linked
1124 * to it. We stop if there is no sink pad in current entity or
1125 * it is not linked to any other remote entity.
1126 */
1127 src_pad = NULL;
1128
1129 for (i = 0; i < sd->entity.num_pads; i++) {
1130 struct media_pad *p = &sd->entity.pads[i];
1131
1132 if (p->flags & MEDIA_PAD_FL_SINK) {
1133 sink_pad = p;
1134 src_pad = media_entity_remote_pad(sink_pad);
1135 if (src_pad)
1136 break;
1137 }
1138 }
1139
1140 if (src_pad == NULL ||
1141 media_entity_type(src_pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
1142 break;
1143
1144 /* Don't call FIMC subdev operation to avoid nested locking */
1145 if (sd == &vc->subdev) {
1146 struct fimc_frame *ff = &vc->ctx->s_frame;
1147 sink_fmt.format.width = ff->f_width;
1148 sink_fmt.format.height = ff->f_height;
1149 sink_fmt.format.code = ff->fmt ? ff->fmt->mbus_code : 0;
1150 } else {
1151 sink_fmt.pad = sink_pad->index;
1152 sink_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
1153 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &sink_fmt);
1154 if (ret < 0 && ret != -ENOIOCTLCMD)
1155 return -EPIPE;
1156 }
1157
1158 /* Retrieve format at the source pad */
1159 sd = media_entity_to_v4l2_subdev(src_pad->entity);
1160 src_fmt.pad = src_pad->index;
1161 src_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
1162 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &src_fmt);
1163 if (ret < 0 && ret != -ENOIOCTLCMD)
1164 return -EPIPE;
1165
1166 if (src_fmt.format.width != sink_fmt.format.width ||
1167 src_fmt.format.height != sink_fmt.format.height ||
1168 src_fmt.format.code != sink_fmt.format.code)
1169 return -EPIPE;
1170
1171 if (sd == p->subdevs[IDX_SENSOR] &&
1172 fimc_user_defined_mbus_fmt(src_fmt.format.code)) {
1173 struct v4l2_plane_pix_format plane_fmt[FIMC_MAX_PLANES];
1174 struct fimc_frame *frame = &vc->ctx->d_frame;
1175 unsigned int i;
1176
1177 ret = fimc_get_sensor_frame_desc(sd, plane_fmt,
1178 frame->fmt->memplanes,
1179 false);
1180 if (ret < 0)
1181 return -EPIPE;
1182
1183 for (i = 0; i < frame->fmt->memplanes; i++)
1184 if (frame->payload[i] < plane_fmt[i].sizeimage)
1185 return -EPIPE;
1186 }
1187 }
1188 return 0;
1189 }
1190
fimc_cap_streamon(struct file * file,void * priv,enum v4l2_buf_type type)1191 static int fimc_cap_streamon(struct file *file, void *priv,
1192 enum v4l2_buf_type type)
1193 {
1194 struct fimc_dev *fimc = video_drvdata(file);
1195 struct fimc_vid_cap *vc = &fimc->vid_cap;
1196 struct media_entity *entity = &vc->ve.vdev.entity;
1197 struct fimc_source_info *si = NULL;
1198 struct v4l2_subdev *sd;
1199 int ret;
1200
1201 if (fimc_capture_active(fimc))
1202 return -EBUSY;
1203
1204 ret = media_entity_pipeline_start(entity, &vc->ve.pipe->mp);
1205 if (ret < 0)
1206 return ret;
1207
1208 sd = __fimc_md_get_subdev(vc->ve.pipe, IDX_SENSOR);
1209 if (sd)
1210 si = v4l2_get_subdev_hostdata(sd);
1211
1212 if (si == NULL) {
1213 ret = -EPIPE;
1214 goto err_p_stop;
1215 }
1216 /*
1217 * Save configuration data related to currently attached image
1218 * sensor or other data source, e.g. FIMC-IS.
1219 */
1220 vc->source_config = *si;
1221
1222 if (vc->input == GRP_ID_FIMC_IS)
1223 vc->source_config.fimc_bus_type = FIMC_BUS_TYPE_ISP_WRITEBACK;
1224
1225 if (vc->user_subdev_api) {
1226 ret = fimc_pipeline_validate(fimc);
1227 if (ret < 0)
1228 goto err_p_stop;
1229 }
1230
1231 ret = vb2_ioctl_streamon(file, priv, type);
1232 if (!ret) {
1233 vc->streaming = true;
1234 return ret;
1235 }
1236
1237 err_p_stop:
1238 media_entity_pipeline_stop(entity);
1239 return ret;
1240 }
1241
fimc_cap_streamoff(struct file * file,void * priv,enum v4l2_buf_type type)1242 static int fimc_cap_streamoff(struct file *file, void *priv,
1243 enum v4l2_buf_type type)
1244 {
1245 struct fimc_dev *fimc = video_drvdata(file);
1246 struct fimc_vid_cap *vc = &fimc->vid_cap;
1247 int ret;
1248
1249 ret = vb2_ioctl_streamoff(file, priv, type);
1250 if (ret < 0)
1251 return ret;
1252
1253 media_entity_pipeline_stop(&vc->ve.vdev.entity);
1254 vc->streaming = false;
1255 return 0;
1256 }
1257
fimc_cap_reqbufs(struct file * file,void * priv,struct v4l2_requestbuffers * reqbufs)1258 static int fimc_cap_reqbufs(struct file *file, void *priv,
1259 struct v4l2_requestbuffers *reqbufs)
1260 {
1261 struct fimc_dev *fimc = video_drvdata(file);
1262 int ret;
1263
1264 ret = vb2_ioctl_reqbufs(file, priv, reqbufs);
1265
1266 if (!ret)
1267 fimc->vid_cap.reqbufs_count = reqbufs->count;
1268
1269 return ret;
1270 }
1271
fimc_cap_g_selection(struct file * file,void * fh,struct v4l2_selection * s)1272 static int fimc_cap_g_selection(struct file *file, void *fh,
1273 struct v4l2_selection *s)
1274 {
1275 struct fimc_dev *fimc = video_drvdata(file);
1276 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1277 struct fimc_frame *f = &ctx->s_frame;
1278
1279 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1280 return -EINVAL;
1281
1282 switch (s->target) {
1283 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
1284 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1285 f = &ctx->d_frame;
1286 case V4L2_SEL_TGT_CROP_BOUNDS:
1287 case V4L2_SEL_TGT_CROP_DEFAULT:
1288 s->r.left = 0;
1289 s->r.top = 0;
1290 s->r.width = f->o_width;
1291 s->r.height = f->o_height;
1292 return 0;
1293
1294 case V4L2_SEL_TGT_COMPOSE:
1295 f = &ctx->d_frame;
1296 case V4L2_SEL_TGT_CROP:
1297 s->r.left = f->offs_h;
1298 s->r.top = f->offs_v;
1299 s->r.width = f->width;
1300 s->r.height = f->height;
1301 return 0;
1302 }
1303
1304 return -EINVAL;
1305 }
1306
1307 /* Return 1 if rectangle a is enclosed in rectangle b, or 0 otherwise. */
enclosed_rectangle(struct v4l2_rect * a,struct v4l2_rect * b)1308 static int enclosed_rectangle(struct v4l2_rect *a, struct v4l2_rect *b)
1309 {
1310 if (a->left < b->left || a->top < b->top)
1311 return 0;
1312 if (a->left + a->width > b->left + b->width)
1313 return 0;
1314 if (a->top + a->height > b->top + b->height)
1315 return 0;
1316
1317 return 1;
1318 }
1319
fimc_cap_s_selection(struct file * file,void * fh,struct v4l2_selection * s)1320 static int fimc_cap_s_selection(struct file *file, void *fh,
1321 struct v4l2_selection *s)
1322 {
1323 struct fimc_dev *fimc = video_drvdata(file);
1324 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1325 struct v4l2_rect rect = s->r;
1326 struct fimc_frame *f;
1327 unsigned long flags;
1328
1329 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1330 return -EINVAL;
1331
1332 if (s->target == V4L2_SEL_TGT_COMPOSE)
1333 f = &ctx->d_frame;
1334 else if (s->target == V4L2_SEL_TGT_CROP)
1335 f = &ctx->s_frame;
1336 else
1337 return -EINVAL;
1338
1339 fimc_capture_try_selection(ctx, &rect, s->target);
1340
1341 if (s->flags & V4L2_SEL_FLAG_LE &&
1342 !enclosed_rectangle(&rect, &s->r))
1343 return -ERANGE;
1344
1345 if (s->flags & V4L2_SEL_FLAG_GE &&
1346 !enclosed_rectangle(&s->r, &rect))
1347 return -ERANGE;
1348
1349 s->r = rect;
1350 spin_lock_irqsave(&fimc->slock, flags);
1351 set_frame_crop(f, s->r.left, s->r.top, s->r.width,
1352 s->r.height);
1353 spin_unlock_irqrestore(&fimc->slock, flags);
1354
1355 set_bit(ST_CAPT_APPLY_CFG, &fimc->state);
1356 return 0;
1357 }
1358
1359 static const struct v4l2_ioctl_ops fimc_capture_ioctl_ops = {
1360 .vidioc_querycap = fimc_cap_querycap,
1361
1362 .vidioc_enum_fmt_vid_cap_mplane = fimc_cap_enum_fmt_mplane,
1363 .vidioc_try_fmt_vid_cap_mplane = fimc_cap_try_fmt_mplane,
1364 .vidioc_s_fmt_vid_cap_mplane = fimc_cap_s_fmt_mplane,
1365 .vidioc_g_fmt_vid_cap_mplane = fimc_cap_g_fmt_mplane,
1366
1367 .vidioc_reqbufs = fimc_cap_reqbufs,
1368 .vidioc_querybuf = vb2_ioctl_querybuf,
1369 .vidioc_qbuf = vb2_ioctl_qbuf,
1370 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1371 .vidioc_expbuf = vb2_ioctl_expbuf,
1372 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
1373 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1374
1375 .vidioc_streamon = fimc_cap_streamon,
1376 .vidioc_streamoff = fimc_cap_streamoff,
1377
1378 .vidioc_g_selection = fimc_cap_g_selection,
1379 .vidioc_s_selection = fimc_cap_s_selection,
1380
1381 .vidioc_enum_input = fimc_cap_enum_input,
1382 .vidioc_s_input = fimc_cap_s_input,
1383 .vidioc_g_input = fimc_cap_g_input,
1384 };
1385
1386 /* Capture subdev media entity operations */
fimc_link_setup(struct media_entity * entity,const struct media_pad * local,const struct media_pad * remote,u32 flags)1387 static int fimc_link_setup(struct media_entity *entity,
1388 const struct media_pad *local,
1389 const struct media_pad *remote, u32 flags)
1390 {
1391 struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
1392 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1393 struct fimc_vid_cap *vc = &fimc->vid_cap;
1394 struct v4l2_subdev *sensor;
1395
1396 if (media_entity_type(remote->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
1397 return -EINVAL;
1398
1399 if (WARN_ON(fimc == NULL))
1400 return 0;
1401
1402 dbg("%s --> %s, flags: 0x%x. input: 0x%x",
1403 local->entity->name, remote->entity->name, flags,
1404 fimc->vid_cap.input);
1405
1406 if (!(flags & MEDIA_LNK_FL_ENABLED)) {
1407 fimc->vid_cap.input = 0;
1408 return 0;
1409 }
1410
1411 if (vc->input != 0)
1412 return -EBUSY;
1413
1414 vc->input = sd->grp_id;
1415
1416 if (vc->user_subdev_api || vc->inh_sensor_ctrls)
1417 return 0;
1418
1419 /* Inherit V4L2 controls from the image sensor subdev. */
1420 sensor = fimc_find_remote_sensor(&vc->subdev.entity);
1421 if (sensor == NULL)
1422 return 0;
1423
1424 return v4l2_ctrl_add_handler(&vc->ctx->ctrls.handler,
1425 sensor->ctrl_handler, NULL);
1426 }
1427
1428 static const struct media_entity_operations fimc_sd_media_ops = {
1429 .link_setup = fimc_link_setup,
1430 };
1431
1432 /**
1433 * fimc_sensor_notify - v4l2_device notification from a sensor subdev
1434 * @sd: pointer to a subdev generating the notification
1435 * @notification: the notification type, must be S5P_FIMC_TX_END_NOTIFY
1436 * @arg: pointer to an u32 type integer that stores the frame payload value
1437 *
1438 * The End Of Frame notification sent by sensor subdev in its still capture
1439 * mode. If there is only a single VSYNC generated by the sensor at the
1440 * beginning of a frame transmission, FIMC does not issue the LastIrq
1441 * (end of frame) interrupt. And this notification is used to complete the
1442 * frame capture and returning a buffer to user-space. Subdev drivers should
1443 * call this notification from their last 'End of frame capture' interrupt.
1444 */
fimc_sensor_notify(struct v4l2_subdev * sd,unsigned int notification,void * arg)1445 void fimc_sensor_notify(struct v4l2_subdev *sd, unsigned int notification,
1446 void *arg)
1447 {
1448 struct fimc_source_info *si;
1449 struct fimc_vid_buffer *buf;
1450 struct fimc_md *fmd;
1451 struct fimc_dev *fimc;
1452 unsigned long flags;
1453
1454 if (sd == NULL)
1455 return;
1456
1457 si = v4l2_get_subdev_hostdata(sd);
1458 fmd = entity_to_fimc_mdev(&sd->entity);
1459
1460 spin_lock_irqsave(&fmd->slock, flags);
1461
1462 fimc = si ? source_to_sensor_info(si)->host : NULL;
1463
1464 if (fimc && arg && notification == S5P_FIMC_TX_END_NOTIFY &&
1465 test_bit(ST_CAPT_PEND, &fimc->state)) {
1466 unsigned long irq_flags;
1467 spin_lock_irqsave(&fimc->slock, irq_flags);
1468 if (!list_empty(&fimc->vid_cap.active_buf_q)) {
1469 buf = list_entry(fimc->vid_cap.active_buf_q.next,
1470 struct fimc_vid_buffer, list);
1471 vb2_set_plane_payload(&buf->vb.vb2_buf, 0,
1472 *((u32 *)arg));
1473 }
1474 fimc_capture_irq_handler(fimc, 1);
1475 fimc_deactivate_capture(fimc);
1476 spin_unlock_irqrestore(&fimc->slock, irq_flags);
1477 }
1478 spin_unlock_irqrestore(&fmd->slock, flags);
1479 }
1480
fimc_subdev_enum_mbus_code(struct v4l2_subdev * sd,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_mbus_code_enum * code)1481 static int fimc_subdev_enum_mbus_code(struct v4l2_subdev *sd,
1482 struct v4l2_subdev_pad_config *cfg,
1483 struct v4l2_subdev_mbus_code_enum *code)
1484 {
1485 struct fimc_fmt *fmt;
1486
1487 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, code->index);
1488 if (!fmt)
1489 return -EINVAL;
1490 code->code = fmt->mbus_code;
1491 return 0;
1492 }
1493
fimc_subdev_get_fmt(struct v4l2_subdev * sd,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_format * fmt)1494 static int fimc_subdev_get_fmt(struct v4l2_subdev *sd,
1495 struct v4l2_subdev_pad_config *cfg,
1496 struct v4l2_subdev_format *fmt)
1497 {
1498 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1499 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1500 struct fimc_frame *ff = &ctx->s_frame;
1501 struct v4l2_mbus_framefmt *mf;
1502
1503 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1504 mf = v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
1505 fmt->format = *mf;
1506 return 0;
1507 }
1508
1509 mf = &fmt->format;
1510 mutex_lock(&fimc->lock);
1511
1512 switch (fmt->pad) {
1513 case FIMC_SD_PAD_SOURCE:
1514 if (!WARN_ON(ff->fmt == NULL))
1515 mf->code = ff->fmt->mbus_code;
1516 /* Sink pads crop rectangle size */
1517 mf->width = ff->width;
1518 mf->height = ff->height;
1519 break;
1520 case FIMC_SD_PAD_SINK_FIFO:
1521 *mf = fimc->vid_cap.wb_fmt;
1522 break;
1523 case FIMC_SD_PAD_SINK_CAM:
1524 default:
1525 *mf = fimc->vid_cap.ci_fmt;
1526 break;
1527 }
1528
1529 mutex_unlock(&fimc->lock);
1530 mf->colorspace = V4L2_COLORSPACE_JPEG;
1531
1532 return 0;
1533 }
1534
fimc_subdev_set_fmt(struct v4l2_subdev * sd,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_format * fmt)1535 static int fimc_subdev_set_fmt(struct v4l2_subdev *sd,
1536 struct v4l2_subdev_pad_config *cfg,
1537 struct v4l2_subdev_format *fmt)
1538 {
1539 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1540 struct v4l2_mbus_framefmt *mf = &fmt->format;
1541 struct fimc_vid_cap *vc = &fimc->vid_cap;
1542 struct fimc_ctx *ctx = vc->ctx;
1543 struct fimc_frame *ff;
1544 struct fimc_fmt *ffmt;
1545
1546 dbg("pad%d: code: 0x%x, %dx%d",
1547 fmt->pad, mf->code, mf->width, mf->height);
1548
1549 if (fmt->pad == FIMC_SD_PAD_SOURCE && vb2_is_busy(&vc->vbq))
1550 return -EBUSY;
1551
1552 mutex_lock(&fimc->lock);
1553 ffmt = fimc_capture_try_format(ctx, &mf->width, &mf->height,
1554 &mf->code, NULL, fmt->pad);
1555 mutex_unlock(&fimc->lock);
1556 mf->colorspace = V4L2_COLORSPACE_JPEG;
1557
1558 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1559 mf = v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
1560 *mf = fmt->format;
1561 return 0;
1562 }
1563 /* There must be a bug in the driver if this happens */
1564 if (WARN_ON(ffmt == NULL))
1565 return -EINVAL;
1566
1567 /* Update RGB Alpha control state and value range */
1568 fimc_alpha_ctrl_update(ctx);
1569
1570 fimc_capture_mark_jpeg_xfer(ctx, ffmt->color);
1571 if (fmt->pad == FIMC_SD_PAD_SOURCE) {
1572 ff = &ctx->d_frame;
1573 /* Sink pads crop rectangle size */
1574 mf->width = ctx->s_frame.width;
1575 mf->height = ctx->s_frame.height;
1576 } else {
1577 ff = &ctx->s_frame;
1578 }
1579
1580 mutex_lock(&fimc->lock);
1581 set_frame_bounds(ff, mf->width, mf->height);
1582
1583 if (fmt->pad == FIMC_SD_PAD_SINK_FIFO)
1584 vc->wb_fmt = *mf;
1585 else if (fmt->pad == FIMC_SD_PAD_SINK_CAM)
1586 vc->ci_fmt = *mf;
1587
1588 ff->fmt = ffmt;
1589
1590 /* Reset the crop rectangle if required. */
1591 if (!(fmt->pad == FIMC_SD_PAD_SOURCE && (ctx->state & FIMC_COMPOSE)))
1592 set_frame_crop(ff, 0, 0, mf->width, mf->height);
1593
1594 if (fmt->pad != FIMC_SD_PAD_SOURCE)
1595 ctx->state &= ~FIMC_COMPOSE;
1596
1597 mutex_unlock(&fimc->lock);
1598 return 0;
1599 }
1600
fimc_subdev_get_selection(struct v4l2_subdev * sd,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_selection * sel)1601 static int fimc_subdev_get_selection(struct v4l2_subdev *sd,
1602 struct v4l2_subdev_pad_config *cfg,
1603 struct v4l2_subdev_selection *sel)
1604 {
1605 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1606 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1607 struct fimc_frame *f = &ctx->s_frame;
1608 struct v4l2_rect *r = &sel->r;
1609 struct v4l2_rect *try_sel;
1610
1611 if (sel->pad == FIMC_SD_PAD_SOURCE)
1612 return -EINVAL;
1613
1614 mutex_lock(&fimc->lock);
1615
1616 switch (sel->target) {
1617 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1618 f = &ctx->d_frame;
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
fimc_subdev_set_selection(struct v4l2_subdev * sd,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_selection * sel)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 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 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 */
fimc_capture_set_default_format(struct fimc_dev * fimc)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 */
fimc_register_capture_device(struct fimc_dev * fimc,struct v4l2_device * v4l2_dev)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
1785 ret = vb2_queue_init(q);
1786 if (ret)
1787 goto err_free_ctx;
1788
1789 /* Default format configuration */
1790 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, 0);
1791 vid_cap->ci_fmt.width = FIMC_DEFAULT_WIDTH;
1792 vid_cap->ci_fmt.height = FIMC_DEFAULT_HEIGHT;
1793 vid_cap->ci_fmt.code = fmt->mbus_code;
1794
1795 ctx->s_frame.width = FIMC_DEFAULT_WIDTH;
1796 ctx->s_frame.height = FIMC_DEFAULT_HEIGHT;
1797 ctx->s_frame.fmt = fmt;
1798
1799 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_WRITEBACK, 0);
1800 vid_cap->wb_fmt = vid_cap->ci_fmt;
1801 vid_cap->wb_fmt.code = fmt->mbus_code;
1802
1803 vid_cap->vd_pad.flags = MEDIA_PAD_FL_SINK;
1804 ret = media_entity_init(&vfd->entity, 1, &vid_cap->vd_pad, 0);
1805 if (ret)
1806 goto err_free_ctx;
1807
1808 ret = fimc_ctrls_create(ctx);
1809 if (ret)
1810 goto err_me_cleanup;
1811
1812 ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1);
1813 if (ret)
1814 goto err_ctrl_free;
1815
1816 v4l2_info(v4l2_dev, "Registered %s as /dev/%s\n",
1817 vfd->name, video_device_node_name(vfd));
1818
1819 vfd->ctrl_handler = &ctx->ctrls.handler;
1820 return 0;
1821
1822 err_ctrl_free:
1823 fimc_ctrls_delete(ctx);
1824 err_me_cleanup:
1825 media_entity_cleanup(&vfd->entity);
1826 err_free_ctx:
1827 kfree(ctx);
1828 return ret;
1829 }
1830
fimc_capture_subdev_registered(struct v4l2_subdev * sd)1831 static int fimc_capture_subdev_registered(struct v4l2_subdev *sd)
1832 {
1833 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1834 int ret;
1835
1836 if (fimc == NULL)
1837 return -ENXIO;
1838
1839 ret = fimc_register_m2m_device(fimc, sd->v4l2_dev);
1840 if (ret)
1841 return ret;
1842
1843 fimc->vid_cap.ve.pipe = v4l2_get_subdev_hostdata(sd);
1844
1845 ret = fimc_register_capture_device(fimc, sd->v4l2_dev);
1846 if (ret) {
1847 fimc_unregister_m2m_device(fimc);
1848 fimc->vid_cap.ve.pipe = NULL;
1849 }
1850
1851 return ret;
1852 }
1853
fimc_capture_subdev_unregistered(struct v4l2_subdev * sd)1854 static void fimc_capture_subdev_unregistered(struct v4l2_subdev *sd)
1855 {
1856 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1857 struct video_device *vdev;
1858
1859 if (fimc == NULL)
1860 return;
1861
1862 mutex_lock(&fimc->lock);
1863
1864 fimc_unregister_m2m_device(fimc);
1865 vdev = &fimc->vid_cap.ve.vdev;
1866
1867 if (video_is_registered(vdev)) {
1868 video_unregister_device(vdev);
1869 media_entity_cleanup(&vdev->entity);
1870 fimc_ctrls_delete(fimc->vid_cap.ctx);
1871 fimc->vid_cap.ve.pipe = NULL;
1872 }
1873 kfree(fimc->vid_cap.ctx);
1874 fimc->vid_cap.ctx = NULL;
1875
1876 mutex_unlock(&fimc->lock);
1877 }
1878
1879 static const struct v4l2_subdev_internal_ops fimc_capture_sd_internal_ops = {
1880 .registered = fimc_capture_subdev_registered,
1881 .unregistered = fimc_capture_subdev_unregistered,
1882 };
1883
fimc_initialize_capture_subdev(struct fimc_dev * fimc)1884 int fimc_initialize_capture_subdev(struct fimc_dev *fimc)
1885 {
1886 struct v4l2_subdev *sd = &fimc->vid_cap.subdev;
1887 int ret;
1888
1889 v4l2_subdev_init(sd, &fimc_subdev_ops);
1890 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1891 snprintf(sd->name, sizeof(sd->name), "FIMC.%d", fimc->id);
1892
1893 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK_CAM].flags = MEDIA_PAD_FL_SINK;
1894 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK_FIFO].flags = MEDIA_PAD_FL_SINK;
1895 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
1896 ret = media_entity_init(&sd->entity, FIMC_SD_PADS_NUM,
1897 fimc->vid_cap.sd_pads, 0);
1898 if (ret)
1899 return ret;
1900
1901 sd->entity.ops = &fimc_sd_media_ops;
1902 sd->internal_ops = &fimc_capture_sd_internal_ops;
1903 v4l2_set_subdevdata(sd, fimc);
1904 return 0;
1905 }
1906
fimc_unregister_capture_subdev(struct fimc_dev * fimc)1907 void fimc_unregister_capture_subdev(struct fimc_dev *fimc)
1908 {
1909 struct v4l2_subdev *sd = &fimc->vid_cap.subdev;
1910
1911 v4l2_device_unregister_subdev(sd);
1912 media_entity_cleanup(&sd->entity);
1913 v4l2_set_subdevdata(sd, NULL);
1914 }
1915