1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Samsung S5P/EXYNOS4 SoC series camera interface (camera capture) driver
4 *
5 * Copyright (C) 2010 - 2012 Samsung Electronics Co., Ltd.
6 * Sylwester Nawrocki <s.nawrocki@samsung.com>
7 */
8
9 #include <linux/module.h>
10 #include <linux/kernel.h>
11 #include <linux/types.h>
12 #include <linux/errno.h>
13 #include <linux/bug.h>
14 #include <linux/interrupt.h>
15 #include <linux/device.h>
16 #include <linux/pm_runtime.h>
17 #include <linux/list.h>
18 #include <linux/slab.h>
19
20 #include <linux/videodev2.h>
21 #include <media/v4l2-device.h>
22 #include <media/v4l2-ioctl.h>
23 #include <media/v4l2-mem2mem.h>
24 #include <media/v4l2-rect.h>
25 #include <media/videobuf2-v4l2.h>
26 #include <media/videobuf2-dma-contig.h>
27
28 #include "common.h"
29 #include "fimc-core.h"
30 #include "fimc-reg.h"
31 #include "media-dev.h"
32
fimc_capture_hw_init(struct fimc_dev * fimc)33 static int fimc_capture_hw_init(struct fimc_dev *fimc)
34 {
35 struct fimc_source_info *si = &fimc->vid_cap.source_config;
36 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
37 int ret;
38 unsigned long flags;
39
40 if (ctx == NULL || ctx->s_frame.fmt == NULL)
41 return -EINVAL;
42
43 if (si->fimc_bus_type == FIMC_BUS_TYPE_ISP_WRITEBACK) {
44 ret = fimc_hw_camblk_cfg_writeback(fimc);
45 if (ret < 0)
46 return ret;
47 }
48
49 spin_lock_irqsave(&fimc->slock, flags);
50 fimc_prepare_dma_offset(ctx, &ctx->d_frame);
51 fimc_set_yuv_order(ctx);
52
53 fimc_hw_set_camera_polarity(fimc, si);
54 fimc_hw_set_camera_type(fimc, si);
55 fimc_hw_set_camera_source(fimc, si);
56 fimc_hw_set_camera_offset(fimc, &ctx->s_frame);
57
58 ret = fimc_set_scaler_info(ctx);
59 if (!ret) {
60 fimc_hw_set_input_path(ctx);
61 fimc_hw_set_prescaler(ctx);
62 fimc_hw_set_mainscaler(ctx);
63 fimc_hw_set_target_format(ctx);
64 fimc_hw_set_rotation(ctx);
65 fimc_hw_set_effect(ctx);
66 fimc_hw_set_output_path(ctx);
67 fimc_hw_set_out_dma(ctx);
68 if (fimc->drv_data->alpha_color)
69 fimc_hw_set_rgb_alpha(ctx);
70 clear_bit(ST_CAPT_APPLY_CFG, &fimc->state);
71 }
72 spin_unlock_irqrestore(&fimc->slock, flags);
73 return ret;
74 }
75
76 /*
77 * Reinitialize the driver so it is ready to start the streaming again.
78 * Set fimc->state to indicate stream off and the hardware shut down state.
79 * If not suspending (@suspend is false), return any buffers to videobuf2.
80 * Otherwise put any owned buffers onto the pending buffers queue, so they
81 * can be re-spun when the device is being resumed. Also perform FIMC
82 * software reset and disable streaming on the whole pipeline if required.
83 */
fimc_capture_state_cleanup(struct fimc_dev * fimc,bool suspend)84 static int fimc_capture_state_cleanup(struct fimc_dev *fimc, bool suspend)
85 {
86 struct fimc_vid_cap *cap = &fimc->vid_cap;
87 struct fimc_vid_buffer *buf;
88 unsigned long flags;
89 bool streaming;
90
91 spin_lock_irqsave(&fimc->slock, flags);
92 streaming = fimc->state & (1 << ST_CAPT_ISP_STREAM);
93
94 fimc->state &= ~(1 << ST_CAPT_RUN | 1 << ST_CAPT_SHUT |
95 1 << ST_CAPT_STREAM | 1 << ST_CAPT_ISP_STREAM);
96 if (suspend)
97 fimc->state |= (1 << ST_CAPT_SUSPENDED);
98 else
99 fimc->state &= ~(1 << ST_CAPT_PEND | 1 << ST_CAPT_SUSPENDED);
100
101 /* Release unused buffers */
102 while (!suspend && !list_empty(&cap->pending_buf_q)) {
103 buf = fimc_pending_queue_pop(cap);
104 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
105 }
106 /* If suspending put unused buffers onto pending queue */
107 while (!list_empty(&cap->active_buf_q)) {
108 buf = fimc_active_queue_pop(cap);
109 if (suspend)
110 fimc_pending_queue_add(cap, buf);
111 else
112 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
113 }
114
115 fimc_hw_reset(fimc);
116 cap->buf_index = 0;
117
118 spin_unlock_irqrestore(&fimc->slock, flags);
119
120 if (streaming)
121 return fimc_pipeline_call(&cap->ve, set_stream, 0);
122 else
123 return 0;
124 }
125
fimc_stop_capture(struct fimc_dev * fimc,bool suspend)126 static int fimc_stop_capture(struct fimc_dev *fimc, bool suspend)
127 {
128 unsigned long flags;
129
130 if (!fimc_capture_active(fimc))
131 return 0;
132
133 spin_lock_irqsave(&fimc->slock, flags);
134 set_bit(ST_CAPT_SHUT, &fimc->state);
135 fimc_deactivate_capture(fimc);
136 spin_unlock_irqrestore(&fimc->slock, flags);
137
138 wait_event_timeout(fimc->irq_queue,
139 !test_bit(ST_CAPT_SHUT, &fimc->state),
140 (2*HZ/10)); /* 200 ms */
141
142 return fimc_capture_state_cleanup(fimc, suspend);
143 }
144
145 /**
146 * fimc_capture_config_update - apply the camera interface configuration
147 * @ctx: FIMC capture context
148 *
149 * To be called from within the interrupt handler with fimc.slock
150 * spinlock held. It updates the camera pixel crop, rotation and
151 * image flip in H/W.
152 */
fimc_capture_config_update(struct fimc_ctx * ctx)153 static int fimc_capture_config_update(struct fimc_ctx *ctx)
154 {
155 struct fimc_dev *fimc = ctx->fimc_dev;
156 int ret;
157
158 fimc_hw_set_camera_offset(fimc, &ctx->s_frame);
159
160 ret = fimc_set_scaler_info(ctx);
161 if (ret)
162 return ret;
163
164 fimc_hw_set_prescaler(ctx);
165 fimc_hw_set_mainscaler(ctx);
166 fimc_hw_set_target_format(ctx);
167 fimc_hw_set_rotation(ctx);
168 fimc_hw_set_effect(ctx);
169 fimc_prepare_dma_offset(ctx, &ctx->d_frame);
170 fimc_hw_set_out_dma(ctx);
171 if (fimc->drv_data->alpha_color)
172 fimc_hw_set_rgb_alpha(ctx);
173
174 clear_bit(ST_CAPT_APPLY_CFG, &fimc->state);
175 return ret;
176 }
177
fimc_capture_irq_handler(struct fimc_dev * fimc,int deq_buf)178 void fimc_capture_irq_handler(struct fimc_dev *fimc, int deq_buf)
179 {
180 struct fimc_vid_cap *cap = &fimc->vid_cap;
181 struct fimc_pipeline *p = to_fimc_pipeline(cap->ve.pipe);
182 struct v4l2_subdev *csis = p->subdevs[IDX_CSIS];
183 struct fimc_frame *f = &cap->ctx->d_frame;
184 struct fimc_vid_buffer *v_buf;
185
186 if (test_and_clear_bit(ST_CAPT_SHUT, &fimc->state)) {
187 wake_up(&fimc->irq_queue);
188 goto done;
189 }
190
191 if (!list_empty(&cap->active_buf_q) &&
192 test_bit(ST_CAPT_RUN, &fimc->state) && deq_buf) {
193 v_buf = fimc_active_queue_pop(cap);
194
195 v_buf->vb.vb2_buf.timestamp = ktime_get_ns();
196 v_buf->vb.sequence = cap->frame_count++;
197
198 vb2_buffer_done(&v_buf->vb.vb2_buf, VB2_BUF_STATE_DONE);
199 }
200
201 if (!list_empty(&cap->pending_buf_q)) {
202
203 v_buf = fimc_pending_queue_pop(cap);
204 fimc_hw_set_output_addr(fimc, &v_buf->addr, cap->buf_index);
205 v_buf->index = cap->buf_index;
206
207 /* Move the buffer to the capture active queue */
208 fimc_active_queue_add(cap, v_buf);
209
210 dbg("next frame: %d, done frame: %d",
211 fimc_hw_get_frame_index(fimc), v_buf->index);
212
213 if (++cap->buf_index >= FIMC_MAX_OUT_BUFS)
214 cap->buf_index = 0;
215 }
216 /*
217 * Set up a buffer at MIPI-CSIS if current image format
218 * requires the frame embedded data capture.
219 */
220 if (f->fmt->mdataplanes && !list_empty(&cap->active_buf_q)) {
221 unsigned int plane = ffs(f->fmt->mdataplanes) - 1;
222 unsigned int size = f->payload[plane];
223 s32 index = fimc_hw_get_frame_index(fimc);
224 void *vaddr;
225
226 list_for_each_entry(v_buf, &cap->active_buf_q, list) {
227 if (v_buf->index != index)
228 continue;
229 vaddr = vb2_plane_vaddr(&v_buf->vb.vb2_buf, plane);
230 v4l2_subdev_call(csis, video, s_rx_buffer,
231 vaddr, &size);
232 break;
233 }
234 }
235
236 if (cap->active_buf_cnt == 0) {
237 if (deq_buf)
238 clear_bit(ST_CAPT_RUN, &fimc->state);
239
240 if (++cap->buf_index >= FIMC_MAX_OUT_BUFS)
241 cap->buf_index = 0;
242 } else {
243 set_bit(ST_CAPT_RUN, &fimc->state);
244 }
245
246 if (test_bit(ST_CAPT_APPLY_CFG, &fimc->state))
247 fimc_capture_config_update(cap->ctx);
248 done:
249 if (cap->active_buf_cnt == 1) {
250 fimc_deactivate_capture(fimc);
251 clear_bit(ST_CAPT_STREAM, &fimc->state);
252 }
253
254 dbg("frame: %d, active_buf_cnt: %d",
255 fimc_hw_get_frame_index(fimc), cap->active_buf_cnt);
256 }
257
258
start_streaming(struct vb2_queue * q,unsigned int count)259 static int start_streaming(struct vb2_queue *q, unsigned int count)
260 {
261 struct fimc_ctx *ctx = q->drv_priv;
262 struct fimc_dev *fimc = ctx->fimc_dev;
263 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
264 int min_bufs;
265 int ret;
266
267 vid_cap->frame_count = 0;
268
269 ret = fimc_capture_hw_init(fimc);
270 if (ret) {
271 fimc_capture_state_cleanup(fimc, false);
272 return ret;
273 }
274
275 set_bit(ST_CAPT_PEND, &fimc->state);
276
277 min_bufs = fimc->vid_cap.reqbufs_count > 1 ? 2 : 1;
278
279 if (vid_cap->active_buf_cnt >= min_bufs &&
280 !test_and_set_bit(ST_CAPT_STREAM, &fimc->state)) {
281 fimc_activate_capture(ctx);
282
283 if (!test_and_set_bit(ST_CAPT_ISP_STREAM, &fimc->state))
284 return fimc_pipeline_call(&vid_cap->ve, set_stream, 1);
285 }
286
287 return 0;
288 }
289
stop_streaming(struct vb2_queue * q)290 static void stop_streaming(struct vb2_queue *q)
291 {
292 struct fimc_ctx *ctx = q->drv_priv;
293 struct fimc_dev *fimc = ctx->fimc_dev;
294
295 if (!fimc_capture_active(fimc))
296 return;
297
298 fimc_stop_capture(fimc, false);
299 }
300
fimc_capture_suspend(struct fimc_dev * fimc)301 int fimc_capture_suspend(struct fimc_dev *fimc)
302 {
303 bool suspend = fimc_capture_busy(fimc);
304
305 int ret = fimc_stop_capture(fimc, suspend);
306 if (ret)
307 return ret;
308 return fimc_pipeline_call(&fimc->vid_cap.ve, close);
309 }
310
311 static void buffer_queue(struct vb2_buffer *vb);
312
fimc_capture_resume(struct fimc_dev * fimc)313 int fimc_capture_resume(struct fimc_dev *fimc)
314 {
315 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
316 struct exynos_video_entity *ve = &vid_cap->ve;
317 struct fimc_vid_buffer *buf;
318 int i;
319
320 if (!test_and_clear_bit(ST_CAPT_SUSPENDED, &fimc->state))
321 return 0;
322
323 INIT_LIST_HEAD(&fimc->vid_cap.active_buf_q);
324 vid_cap->buf_index = 0;
325 fimc_pipeline_call(ve, open, &ve->vdev.entity, false);
326 fimc_capture_hw_init(fimc);
327
328 clear_bit(ST_CAPT_SUSPENDED, &fimc->state);
329
330 for (i = 0; i < vid_cap->reqbufs_count; i++) {
331 if (list_empty(&vid_cap->pending_buf_q))
332 break;
333 buf = fimc_pending_queue_pop(vid_cap);
334 buffer_queue(&buf->vb.vb2_buf);
335 }
336 return 0;
337
338 }
339
queue_setup(struct vb2_queue * vq,unsigned int * num_buffers,unsigned int * num_planes,unsigned int sizes[],struct device * alloc_devs[])340 static int queue_setup(struct vb2_queue *vq,
341 unsigned int *num_buffers, unsigned int *num_planes,
342 unsigned int sizes[], struct device *alloc_devs[])
343 {
344 struct fimc_ctx *ctx = vq->drv_priv;
345 struct fimc_frame *frame = &ctx->d_frame;
346 struct fimc_fmt *fmt = frame->fmt;
347 unsigned long wh = frame->f_width * frame->f_height;
348 int i;
349
350 if (fmt == NULL)
351 return -EINVAL;
352
353 if (*num_planes) {
354 if (*num_planes != fmt->memplanes)
355 return -EINVAL;
356 for (i = 0; i < *num_planes; i++)
357 if (sizes[i] < (wh * fmt->depth[i]) / 8)
358 return -EINVAL;
359 return 0;
360 }
361
362 *num_planes = fmt->memplanes;
363
364 for (i = 0; i < fmt->memplanes; i++) {
365 unsigned int size = (wh * fmt->depth[i]) / 8;
366
367 if (fimc_fmt_is_user_defined(fmt->color))
368 sizes[i] = frame->payload[i];
369 else
370 sizes[i] = max_t(u32, size, frame->payload[i]);
371 }
372
373 return 0;
374 }
375
buffer_prepare(struct vb2_buffer * vb)376 static int buffer_prepare(struct vb2_buffer *vb)
377 {
378 struct vb2_queue *vq = vb->vb2_queue;
379 struct fimc_ctx *ctx = vq->drv_priv;
380 int i;
381
382 if (ctx->d_frame.fmt == NULL)
383 return -EINVAL;
384
385 for (i = 0; i < ctx->d_frame.fmt->memplanes; i++) {
386 unsigned long size = ctx->d_frame.payload[i];
387
388 if (vb2_plane_size(vb, i) < size) {
389 v4l2_err(&ctx->fimc_dev->vid_cap.ve.vdev,
390 "User buffer too small (%ld < %ld)\n",
391 vb2_plane_size(vb, i), size);
392 return -EINVAL;
393 }
394 vb2_set_plane_payload(vb, i, size);
395 }
396
397 return 0;
398 }
399
buffer_queue(struct vb2_buffer * vb)400 static void buffer_queue(struct vb2_buffer *vb)
401 {
402 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
403 struct fimc_vid_buffer *buf
404 = container_of(vbuf, struct fimc_vid_buffer, vb);
405 struct fimc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
406 struct fimc_dev *fimc = ctx->fimc_dev;
407 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
408 struct exynos_video_entity *ve = &vid_cap->ve;
409 unsigned long flags;
410 int min_bufs;
411
412 spin_lock_irqsave(&fimc->slock, flags);
413 fimc_prepare_addr(ctx, &buf->vb.vb2_buf, &ctx->d_frame, &buf->addr);
414
415 if (!test_bit(ST_CAPT_SUSPENDED, &fimc->state) &&
416 !test_bit(ST_CAPT_STREAM, &fimc->state) &&
417 vid_cap->active_buf_cnt < FIMC_MAX_OUT_BUFS) {
418 /* Setup the buffer directly for processing. */
419 int buf_id = (vid_cap->reqbufs_count == 1) ? -1 :
420 vid_cap->buf_index;
421
422 fimc_hw_set_output_addr(fimc, &buf->addr, buf_id);
423 buf->index = vid_cap->buf_index;
424 fimc_active_queue_add(vid_cap, buf);
425
426 if (++vid_cap->buf_index >= FIMC_MAX_OUT_BUFS)
427 vid_cap->buf_index = 0;
428 } else {
429 fimc_pending_queue_add(vid_cap, buf);
430 }
431
432 min_bufs = vid_cap->reqbufs_count > 1 ? 2 : 1;
433
434
435 if (vb2_is_streaming(&vid_cap->vbq) &&
436 vid_cap->active_buf_cnt >= min_bufs &&
437 !test_and_set_bit(ST_CAPT_STREAM, &fimc->state)) {
438 int ret;
439
440 fimc_activate_capture(ctx);
441 spin_unlock_irqrestore(&fimc->slock, flags);
442
443 if (test_and_set_bit(ST_CAPT_ISP_STREAM, &fimc->state))
444 return;
445
446 ret = fimc_pipeline_call(ve, set_stream, 1);
447 if (ret < 0)
448 v4l2_err(&ve->vdev, "stream on failed: %d\n", ret);
449 return;
450 }
451 spin_unlock_irqrestore(&fimc->slock, flags);
452 }
453
454 static const struct vb2_ops fimc_capture_qops = {
455 .queue_setup = queue_setup,
456 .buf_prepare = buffer_prepare,
457 .buf_queue = buffer_queue,
458 .wait_prepare = vb2_ops_wait_prepare,
459 .wait_finish = vb2_ops_wait_finish,
460 .start_streaming = start_streaming,
461 .stop_streaming = stop_streaming,
462 };
463
464 static int fimc_capture_set_default_format(struct fimc_dev *fimc);
465
fimc_capture_open(struct file * file)466 static int fimc_capture_open(struct file *file)
467 {
468 struct fimc_dev *fimc = video_drvdata(file);
469 struct fimc_vid_cap *vc = &fimc->vid_cap;
470 struct exynos_video_entity *ve = &vc->ve;
471 int ret = -EBUSY;
472
473 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
474
475 mutex_lock(&fimc->lock);
476
477 if (fimc_m2m_active(fimc))
478 goto unlock;
479
480 set_bit(ST_CAPT_BUSY, &fimc->state);
481 ret = pm_runtime_get_sync(&fimc->pdev->dev);
482 if (ret < 0) {
483 pm_runtime_put_sync(&fimc->pdev->dev);
484 goto unlock;
485 }
486
487 ret = v4l2_fh_open(file);
488 if (ret) {
489 pm_runtime_put_sync(&fimc->pdev->dev);
490 goto unlock;
491 }
492
493 if (v4l2_fh_is_singular_file(file)) {
494 fimc_md_graph_lock(ve);
495
496 ret = fimc_pipeline_call(ve, open, &ve->vdev.entity, true);
497
498 if (ret == 0)
499 ve->vdev.entity.use_count++;
500
501 fimc_md_graph_unlock(ve);
502
503 if (ret == 0)
504 ret = fimc_capture_set_default_format(fimc);
505
506 if (ret < 0) {
507 clear_bit(ST_CAPT_BUSY, &fimc->state);
508 pm_runtime_put_sync(&fimc->pdev->dev);
509 v4l2_fh_release(file);
510 }
511 }
512 unlock:
513 mutex_unlock(&fimc->lock);
514 return ret;
515 }
516
fimc_capture_release(struct file * file)517 static int fimc_capture_release(struct file *file)
518 {
519 struct fimc_dev *fimc = video_drvdata(file);
520 struct fimc_vid_cap *vc = &fimc->vid_cap;
521 bool close = v4l2_fh_is_singular_file(file);
522 int ret;
523
524 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
525
526 mutex_lock(&fimc->lock);
527
528 if (close && vc->streaming) {
529 media_pipeline_stop(&vc->ve.vdev.entity);
530 vc->streaming = false;
531 }
532
533 ret = _vb2_fop_release(file, NULL);
534
535 if (close) {
536 clear_bit(ST_CAPT_BUSY, &fimc->state);
537 fimc_pipeline_call(&vc->ve, close);
538 clear_bit(ST_CAPT_SUSPENDED, &fimc->state);
539
540 fimc_md_graph_lock(&vc->ve);
541 vc->ve.vdev.entity.use_count--;
542 fimc_md_graph_unlock(&vc->ve);
543 }
544
545 pm_runtime_put_sync(&fimc->pdev->dev);
546 mutex_unlock(&fimc->lock);
547
548 return ret;
549 }
550
551 static const struct v4l2_file_operations fimc_capture_fops = {
552 .owner = THIS_MODULE,
553 .open = fimc_capture_open,
554 .release = fimc_capture_release,
555 .poll = vb2_fop_poll,
556 .unlocked_ioctl = video_ioctl2,
557 .mmap = vb2_fop_mmap,
558 };
559
560 /*
561 * Format and crop negotiation helpers
562 */
563
fimc_capture_try_format(struct fimc_ctx * ctx,u32 * width,u32 * height,u32 * code,u32 * fourcc,int pad)564 static struct fimc_fmt *fimc_capture_try_format(struct fimc_ctx *ctx,
565 u32 *width, u32 *height,
566 u32 *code, u32 *fourcc, int pad)
567 {
568 bool rotation = ctx->rotation == 90 || ctx->rotation == 270;
569 struct fimc_dev *fimc = ctx->fimc_dev;
570 const struct fimc_variant *var = fimc->variant;
571 const struct fimc_pix_limit *pl = var->pix_limit;
572 struct fimc_frame *dst = &ctx->d_frame;
573 u32 depth, min_w, max_w, min_h, align_h = 3;
574 u32 mask = FMT_FLAGS_CAM;
575 struct fimc_fmt *ffmt;
576
577 /* Conversion from/to JPEG or User Defined format is not supported */
578 if (code && ctx->s_frame.fmt && pad == FIMC_SD_PAD_SOURCE &&
579 fimc_fmt_is_user_defined(ctx->s_frame.fmt->color))
580 *code = ctx->s_frame.fmt->mbus_code;
581
582 if (fourcc && *fourcc != V4L2_PIX_FMT_JPEG && pad == FIMC_SD_PAD_SOURCE)
583 mask |= FMT_FLAGS_M2M;
584
585 if (pad == FIMC_SD_PAD_SINK_FIFO)
586 mask = FMT_FLAGS_WRITEBACK;
587
588 ffmt = fimc_find_format(fourcc, code, mask, 0);
589 if (WARN_ON(!ffmt))
590 return NULL;
591
592 if (code)
593 *code = ffmt->mbus_code;
594 if (fourcc)
595 *fourcc = ffmt->fourcc;
596
597 if (pad != FIMC_SD_PAD_SOURCE) {
598 max_w = fimc_fmt_is_user_defined(ffmt->color) ?
599 pl->scaler_dis_w : pl->scaler_en_w;
600 /* Apply the camera input interface pixel constraints */
601 v4l_bound_align_image(width, max_t(u32, *width, 32), max_w, 4,
602 height, max_t(u32, *height, 32),
603 FIMC_CAMIF_MAX_HEIGHT,
604 fimc_fmt_is_user_defined(ffmt->color) ?
605 3 : 1,
606 0);
607 return ffmt;
608 }
609 /* Can't scale or crop in transparent (JPEG) transfer mode */
610 if (fimc_fmt_is_user_defined(ffmt->color)) {
611 *width = ctx->s_frame.f_width;
612 *height = ctx->s_frame.f_height;
613 return ffmt;
614 }
615 /* Apply the scaler and the output DMA constraints */
616 max_w = rotation ? pl->out_rot_en_w : pl->out_rot_dis_w;
617 if (ctx->state & FIMC_COMPOSE) {
618 min_w = dst->offs_h + dst->width;
619 min_h = dst->offs_v + dst->height;
620 } else {
621 min_w = var->min_out_pixsize;
622 min_h = var->min_out_pixsize;
623 }
624 if (var->min_vsize_align == 1 && !rotation)
625 align_h = fimc_fmt_is_rgb(ffmt->color) ? 0 : 1;
626
627 depth = fimc_get_format_depth(ffmt);
628 v4l_bound_align_image(width, min_w, max_w,
629 ffs(var->min_out_pixsize) - 1,
630 height, min_h, FIMC_CAMIF_MAX_HEIGHT,
631 align_h,
632 64/(ALIGN(depth, 8)));
633
634 dbg("pad%d: code: 0x%x, %dx%d. dst fmt: %dx%d",
635 pad, code ? *code : 0, *width, *height,
636 dst->f_width, dst->f_height);
637
638 return ffmt;
639 }
640
fimc_capture_try_selection(struct fimc_ctx * ctx,struct v4l2_rect * r,int target)641 static void fimc_capture_try_selection(struct fimc_ctx *ctx,
642 struct v4l2_rect *r,
643 int target)
644 {
645 bool rotate = ctx->rotation == 90 || ctx->rotation == 270;
646 struct fimc_dev *fimc = ctx->fimc_dev;
647 const struct fimc_variant *var = fimc->variant;
648 const struct fimc_pix_limit *pl = var->pix_limit;
649 struct fimc_frame *sink = &ctx->s_frame;
650 u32 max_w, max_h, min_w = 0, min_h = 0, min_sz;
651 u32 align_sz = 0, align_h = 4;
652 u32 max_sc_h, max_sc_v;
653
654 /* In JPEG transparent transfer mode cropping is not supported */
655 if (fimc_fmt_is_user_defined(ctx->d_frame.fmt->color)) {
656 r->width = sink->f_width;
657 r->height = sink->f_height;
658 r->left = r->top = 0;
659 return;
660 }
661 if (target == V4L2_SEL_TGT_COMPOSE) {
662 u32 tmp_min_h = ffs(sink->width) - 3;
663 u32 tmp_min_v = ffs(sink->height) - 1;
664
665 if (ctx->rotation != 90 && ctx->rotation != 270)
666 align_h = 1;
667 max_sc_h = min(SCALER_MAX_HRATIO, 1 << tmp_min_h);
668 max_sc_v = min(SCALER_MAX_VRATIO, 1 << tmp_min_v);
669 min_sz = var->min_out_pixsize;
670 } else {
671 u32 depth = fimc_get_format_depth(sink->fmt);
672 align_sz = 64/ALIGN(depth, 8);
673 min_sz = var->min_inp_pixsize;
674 min_w = min_h = min_sz;
675 max_sc_h = max_sc_v = 1;
676 }
677 /*
678 * For the compose rectangle the following constraints must be met:
679 * - it must fit in the sink pad format rectangle (f_width/f_height);
680 * - maximum downscaling ratio is 64;
681 * - maximum crop size depends if the rotator is used or not;
682 * - the sink pad format width/height must be 4 multiple of the
683 * prescaler ratios determined by sink pad size and source pad crop,
684 * the prescaler ratio is returned by fimc_get_scaler_factor().
685 */
686 max_w = min_t(u32,
687 rotate ? pl->out_rot_en_w : pl->out_rot_dis_w,
688 rotate ? sink->f_height : sink->f_width);
689 max_h = min_t(u32, FIMC_CAMIF_MAX_HEIGHT, sink->f_height);
690
691 if (target == V4L2_SEL_TGT_COMPOSE) {
692 min_w = min_t(u32, max_w, sink->f_width / max_sc_h);
693 min_h = min_t(u32, max_h, sink->f_height / max_sc_v);
694 if (rotate) {
695 swap(max_sc_h, max_sc_v);
696 swap(min_w, min_h);
697 }
698 }
699 v4l_bound_align_image(&r->width, min_w, max_w, ffs(min_sz) - 1,
700 &r->height, min_h, max_h, align_h,
701 align_sz);
702 /* Adjust left/top if crop/compose rectangle is out of bounds */
703 r->left = clamp_t(u32, r->left, 0, sink->f_width - r->width);
704 r->top = clamp_t(u32, r->top, 0, sink->f_height - r->height);
705 r->left = round_down(r->left, var->hor_offs_align);
706
707 dbg("target %#x: (%d,%d)/%dx%d, sink fmt: %dx%d",
708 target, r->left, r->top, r->width, r->height,
709 sink->f_width, sink->f_height);
710 }
711
712 /*
713 * The video node ioctl operations
714 */
fimc_cap_querycap(struct file * file,void * priv,struct v4l2_capability * cap)715 static int fimc_cap_querycap(struct file *file, void *priv,
716 struct v4l2_capability *cap)
717 {
718 struct fimc_dev *fimc = video_drvdata(file);
719
720 __fimc_vidioc_querycap(&fimc->pdev->dev, cap);
721 return 0;
722 }
723
fimc_cap_enum_fmt(struct file * file,void * priv,struct v4l2_fmtdesc * f)724 static int fimc_cap_enum_fmt(struct file *file, void *priv,
725 struct v4l2_fmtdesc *f)
726 {
727 struct fimc_fmt *fmt;
728
729 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM | FMT_FLAGS_M2M,
730 f->index);
731 if (!fmt)
732 return -EINVAL;
733 f->pixelformat = fmt->fourcc;
734 return 0;
735 }
736
fimc_pipeline_get_head(struct media_entity * me)737 static struct media_entity *fimc_pipeline_get_head(struct media_entity *me)
738 {
739 struct media_pad *pad = &me->pads[0];
740
741 while (!(pad->flags & MEDIA_PAD_FL_SOURCE)) {
742 pad = media_entity_remote_pad(pad);
743 if (!pad)
744 break;
745 me = pad->entity;
746 pad = &me->pads[0];
747 }
748
749 return me;
750 }
751
752 /**
753 * fimc_pipeline_try_format - negotiate and/or set formats at pipeline
754 * elements
755 * @ctx: FIMC capture context
756 * @tfmt: media bus format to try/set on subdevs
757 * @fmt_id: fimc pixel format id corresponding to returned @tfmt (output)
758 * @set: true to set format on subdevs, false to try only
759 */
fimc_pipeline_try_format(struct fimc_ctx * ctx,struct v4l2_mbus_framefmt * tfmt,struct fimc_fmt ** fmt_id,bool set)760 static int fimc_pipeline_try_format(struct fimc_ctx *ctx,
761 struct v4l2_mbus_framefmt *tfmt,
762 struct fimc_fmt **fmt_id,
763 bool set)
764 {
765 struct fimc_dev *fimc = ctx->fimc_dev;
766 struct fimc_pipeline *p = to_fimc_pipeline(fimc->vid_cap.ve.pipe);
767 struct v4l2_subdev *sd = p->subdevs[IDX_SENSOR];
768 struct v4l2_subdev_format sfmt;
769 struct v4l2_mbus_framefmt *mf = &sfmt.format;
770 struct media_entity *me;
771 struct fimc_fmt *ffmt;
772 struct media_pad *pad;
773 int ret, i = 1;
774 u32 fcc;
775
776 if (WARN_ON(!sd || !tfmt))
777 return -EINVAL;
778
779 memset(&sfmt, 0, sizeof(sfmt));
780 sfmt.format = *tfmt;
781 sfmt.which = set ? V4L2_SUBDEV_FORMAT_ACTIVE : V4L2_SUBDEV_FORMAT_TRY;
782
783 me = fimc_pipeline_get_head(&sd->entity);
784
785 while (1) {
786 ffmt = fimc_find_format(NULL, mf->code != 0 ? &mf->code : NULL,
787 FMT_FLAGS_CAM, i++);
788 if (ffmt == NULL) {
789 /*
790 * Notify user-space if common pixel code for
791 * host and sensor does not exist.
792 */
793 return -EINVAL;
794 }
795 mf->code = tfmt->code = ffmt->mbus_code;
796
797 /* set format on all pipeline subdevs */
798 while (me != &fimc->vid_cap.subdev.entity) {
799 sd = media_entity_to_v4l2_subdev(me);
800
801 sfmt.pad = 0;
802 ret = v4l2_subdev_call(sd, pad, set_fmt, NULL, &sfmt);
803 if (ret)
804 return ret;
805
806 if (me->pads[0].flags & MEDIA_PAD_FL_SINK) {
807 sfmt.pad = me->num_pads - 1;
808 mf->code = tfmt->code;
809 ret = v4l2_subdev_call(sd, pad, set_fmt, NULL,
810 &sfmt);
811 if (ret)
812 return ret;
813 }
814
815 pad = media_entity_remote_pad(&me->pads[sfmt.pad]);
816 if (!pad)
817 return -EINVAL;
818 me = pad->entity;
819 }
820
821 if (mf->code != tfmt->code)
822 continue;
823
824 fcc = ffmt->fourcc;
825 tfmt->width = mf->width;
826 tfmt->height = mf->height;
827 ffmt = fimc_capture_try_format(ctx, &tfmt->width, &tfmt->height,
828 NULL, &fcc, FIMC_SD_PAD_SINK_CAM);
829 ffmt = fimc_capture_try_format(ctx, &tfmt->width, &tfmt->height,
830 NULL, &fcc, FIMC_SD_PAD_SOURCE);
831 if (ffmt && ffmt->mbus_code)
832 mf->code = ffmt->mbus_code;
833 if (mf->width != tfmt->width || mf->height != tfmt->height)
834 continue;
835 tfmt->code = mf->code;
836 break;
837 }
838
839 if (fmt_id && ffmt)
840 *fmt_id = ffmt;
841 *tfmt = *mf;
842
843 return 0;
844 }
845
846 /**
847 * fimc_get_sensor_frame_desc - query the sensor for media bus frame parameters
848 * @sensor: pointer to the sensor subdev
849 * @plane_fmt: provides plane sizes corresponding to the frame layout entries
850 * @num_planes: number of planes
851 * @try: true to set the frame parameters, false to query only
852 *
853 * This function is used by this driver only for compressed/blob data formats.
854 */
fimc_get_sensor_frame_desc(struct v4l2_subdev * sensor,struct v4l2_plane_pix_format * plane_fmt,unsigned int num_planes,bool try)855 static int fimc_get_sensor_frame_desc(struct v4l2_subdev *sensor,
856 struct v4l2_plane_pix_format *plane_fmt,
857 unsigned int num_planes, bool try)
858 {
859 struct v4l2_mbus_frame_desc fd;
860 int i, ret;
861 int pad;
862
863 for (i = 0; i < num_planes; i++)
864 fd.entry[i].length = plane_fmt[i].sizeimage;
865
866 pad = sensor->entity.num_pads - 1;
867 if (try)
868 ret = v4l2_subdev_call(sensor, pad, set_frame_desc, pad, &fd);
869 else
870 ret = v4l2_subdev_call(sensor, pad, get_frame_desc, pad, &fd);
871
872 if (ret < 0)
873 return ret;
874
875 if (num_planes != fd.num_entries)
876 return -EINVAL;
877
878 for (i = 0; i < num_planes; i++)
879 plane_fmt[i].sizeimage = fd.entry[i].length;
880
881 if (fd.entry[0].length > FIMC_MAX_JPEG_BUF_SIZE) {
882 v4l2_err(sensor->v4l2_dev, "Unsupported buffer size: %u\n",
883 fd.entry[0].length);
884
885 return -EINVAL;
886 }
887
888 return 0;
889 }
890
fimc_cap_g_fmt_mplane(struct file * file,void * fh,struct v4l2_format * f)891 static int fimc_cap_g_fmt_mplane(struct file *file, void *fh,
892 struct v4l2_format *f)
893 {
894 struct fimc_dev *fimc = video_drvdata(file);
895
896 __fimc_get_format(&fimc->vid_cap.ctx->d_frame, f);
897 return 0;
898 }
899
900 /*
901 * Try or set format on the fimc.X.capture video node and additionally
902 * on the whole pipeline if @try is false.
903 * Locking: the caller must _not_ hold the graph mutex.
904 */
__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)905 static int __video_try_or_set_format(struct fimc_dev *fimc,
906 struct v4l2_format *f, bool try,
907 struct fimc_fmt **inp_fmt,
908 struct fimc_fmt **out_fmt)
909 {
910 struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
911 struct fimc_vid_cap *vc = &fimc->vid_cap;
912 struct exynos_video_entity *ve = &vc->ve;
913 struct fimc_ctx *ctx = vc->ctx;
914 unsigned int width = 0, height = 0;
915 int ret = 0;
916
917 /* Pre-configure format at the camera input interface, for JPEG only */
918 if (fimc_jpeg_fourcc(pix->pixelformat)) {
919 fimc_capture_try_format(ctx, &pix->width, &pix->height,
920 NULL, &pix->pixelformat,
921 FIMC_SD_PAD_SINK_CAM);
922 if (try) {
923 width = pix->width;
924 height = pix->height;
925 } else {
926 ctx->s_frame.f_width = pix->width;
927 ctx->s_frame.f_height = pix->height;
928 }
929 }
930
931 /* Try the format at the scaler and the DMA output */
932 *out_fmt = fimc_capture_try_format(ctx, &pix->width, &pix->height,
933 NULL, &pix->pixelformat,
934 FIMC_SD_PAD_SOURCE);
935 if (*out_fmt == NULL)
936 return -EINVAL;
937
938 /* Restore image width/height for JPEG (no resizing supported). */
939 if (try && fimc_jpeg_fourcc(pix->pixelformat)) {
940 pix->width = width;
941 pix->height = height;
942 }
943
944 /* Try to match format at the host and the sensor */
945 if (!vc->user_subdev_api) {
946 struct v4l2_mbus_framefmt mbus_fmt;
947 struct v4l2_mbus_framefmt *mf;
948
949 mf = try ? &mbus_fmt : &fimc->vid_cap.ci_fmt;
950
951 mf->code = (*out_fmt)->mbus_code;
952 mf->width = pix->width;
953 mf->height = pix->height;
954
955 fimc_md_graph_lock(ve);
956 ret = fimc_pipeline_try_format(ctx, mf, inp_fmt, try);
957 fimc_md_graph_unlock(ve);
958
959 if (ret < 0)
960 return ret;
961
962 pix->width = mf->width;
963 pix->height = mf->height;
964 }
965
966 fimc_adjust_mplane_format(*out_fmt, pix->width, pix->height, pix);
967
968 if ((*out_fmt)->flags & FMT_FLAGS_COMPRESSED) {
969 struct v4l2_subdev *sensor;
970
971 fimc_md_graph_lock(ve);
972
973 sensor = __fimc_md_get_subdev(ve->pipe, IDX_SENSOR);
974 if (sensor)
975 fimc_get_sensor_frame_desc(sensor, pix->plane_fmt,
976 (*out_fmt)->memplanes, try);
977 else
978 ret = -EPIPE;
979
980 fimc_md_graph_unlock(ve);
981 }
982
983 return ret;
984 }
985
fimc_cap_try_fmt_mplane(struct file * file,void * fh,struct v4l2_format * f)986 static int fimc_cap_try_fmt_mplane(struct file *file, void *fh,
987 struct v4l2_format *f)
988 {
989 struct fimc_dev *fimc = video_drvdata(file);
990 struct fimc_fmt *out_fmt = NULL, *inp_fmt = NULL;
991
992 return __video_try_or_set_format(fimc, f, true, &inp_fmt, &out_fmt);
993 }
994
fimc_capture_mark_jpeg_xfer(struct fimc_ctx * ctx,enum fimc_color_fmt color)995 static void fimc_capture_mark_jpeg_xfer(struct fimc_ctx *ctx,
996 enum fimc_color_fmt color)
997 {
998 bool jpeg = fimc_fmt_is_user_defined(color);
999
1000 ctx->scaler.enabled = !jpeg;
1001 fimc_ctrls_activate(ctx, !jpeg);
1002
1003 if (jpeg)
1004 set_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state);
1005 else
1006 clear_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state);
1007 }
1008
__fimc_capture_set_format(struct fimc_dev * fimc,struct v4l2_format * f)1009 static int __fimc_capture_set_format(struct fimc_dev *fimc,
1010 struct v4l2_format *f)
1011 {
1012 struct fimc_vid_cap *vc = &fimc->vid_cap;
1013 struct fimc_ctx *ctx = vc->ctx;
1014 struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
1015 struct fimc_frame *ff = &ctx->d_frame;
1016 struct fimc_fmt *inp_fmt = NULL;
1017 int ret, i;
1018
1019 if (vb2_is_busy(&fimc->vid_cap.vbq))
1020 return -EBUSY;
1021
1022 ret = __video_try_or_set_format(fimc, f, false, &inp_fmt, &ff->fmt);
1023 if (ret < 0)
1024 return ret;
1025
1026 /* Update RGB Alpha control state and value range */
1027 fimc_alpha_ctrl_update(ctx);
1028
1029 for (i = 0; i < ff->fmt->memplanes; i++) {
1030 ff->bytesperline[i] = pix->plane_fmt[i].bytesperline;
1031 ff->payload[i] = pix->plane_fmt[i].sizeimage;
1032 }
1033
1034 set_frame_bounds(ff, pix->width, pix->height);
1035 /* Reset the composition rectangle if not yet configured */
1036 if (!(ctx->state & FIMC_COMPOSE))
1037 set_frame_crop(ff, 0, 0, pix->width, pix->height);
1038
1039 fimc_capture_mark_jpeg_xfer(ctx, ff->fmt->color);
1040
1041 /* Reset cropping and set format at the camera interface input */
1042 if (!vc->user_subdev_api) {
1043 ctx->s_frame.fmt = inp_fmt;
1044 set_frame_bounds(&ctx->s_frame, pix->width, pix->height);
1045 set_frame_crop(&ctx->s_frame, 0, 0, pix->width, pix->height);
1046 }
1047
1048 return ret;
1049 }
1050
fimc_cap_s_fmt_mplane(struct file * file,void * priv,struct v4l2_format * f)1051 static int fimc_cap_s_fmt_mplane(struct file *file, void *priv,
1052 struct v4l2_format *f)
1053 {
1054 struct fimc_dev *fimc = video_drvdata(file);
1055
1056 return __fimc_capture_set_format(fimc, f);
1057 }
1058
fimc_cap_enum_input(struct file * file,void * priv,struct v4l2_input * i)1059 static int fimc_cap_enum_input(struct file *file, void *priv,
1060 struct v4l2_input *i)
1061 {
1062 struct fimc_dev *fimc = video_drvdata(file);
1063 struct exynos_video_entity *ve = &fimc->vid_cap.ve;
1064 struct v4l2_subdev *sd;
1065
1066 if (i->index != 0)
1067 return -EINVAL;
1068
1069 i->type = V4L2_INPUT_TYPE_CAMERA;
1070 fimc_md_graph_lock(ve);
1071 sd = __fimc_md_get_subdev(ve->pipe, IDX_SENSOR);
1072 fimc_md_graph_unlock(ve);
1073
1074 if (sd)
1075 strscpy(i->name, sd->name, sizeof(i->name));
1076
1077 return 0;
1078 }
1079
fimc_cap_s_input(struct file * file,void * priv,unsigned int i)1080 static int fimc_cap_s_input(struct file *file, void *priv, unsigned int i)
1081 {
1082 return i == 0 ? i : -EINVAL;
1083 }
1084
fimc_cap_g_input(struct file * file,void * priv,unsigned int * i)1085 static int fimc_cap_g_input(struct file *file, void *priv, unsigned int *i)
1086 {
1087 *i = 0;
1088 return 0;
1089 }
1090
1091 /**
1092 * fimc_pipeline_validate - check for formats inconsistencies
1093 * between source and sink pad of each link
1094 * @fimc: the FIMC device this context applies to
1095 *
1096 * Return 0 if all formats match or -EPIPE otherwise.
1097 */
fimc_pipeline_validate(struct fimc_dev * fimc)1098 static int fimc_pipeline_validate(struct fimc_dev *fimc)
1099 {
1100 struct v4l2_subdev_format sink_fmt, src_fmt;
1101 struct fimc_vid_cap *vc = &fimc->vid_cap;
1102 struct v4l2_subdev *sd = &vc->subdev;
1103 struct fimc_pipeline *p = to_fimc_pipeline(vc->ve.pipe);
1104 struct media_pad *sink_pad, *src_pad;
1105 int i, ret;
1106
1107 while (1) {
1108 /*
1109 * Find current entity sink pad and any remote sink pad linked
1110 * to it. We stop if there is no sink pad in current entity or
1111 * it is not linked to any other remote entity.
1112 */
1113 src_pad = NULL;
1114
1115 for (i = 0; i < sd->entity.num_pads; i++) {
1116 struct media_pad *p = &sd->entity.pads[i];
1117
1118 if (p->flags & MEDIA_PAD_FL_SINK) {
1119 sink_pad = p;
1120 src_pad = media_entity_remote_pad(sink_pad);
1121 if (src_pad)
1122 break;
1123 }
1124 }
1125
1126 if (!src_pad || !is_media_entity_v4l2_subdev(src_pad->entity))
1127 break;
1128
1129 /* Don't call FIMC subdev operation to avoid nested locking */
1130 if (sd == &vc->subdev) {
1131 struct fimc_frame *ff = &vc->ctx->s_frame;
1132 sink_fmt.format.width = ff->f_width;
1133 sink_fmt.format.height = ff->f_height;
1134 sink_fmt.format.code = ff->fmt ? ff->fmt->mbus_code : 0;
1135 } else {
1136 sink_fmt.pad = sink_pad->index;
1137 sink_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
1138 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &sink_fmt);
1139 if (ret < 0 && ret != -ENOIOCTLCMD)
1140 return -EPIPE;
1141 }
1142
1143 /* Retrieve format at the source pad */
1144 sd = media_entity_to_v4l2_subdev(src_pad->entity);
1145 src_fmt.pad = src_pad->index;
1146 src_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
1147 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &src_fmt);
1148 if (ret < 0 && ret != -ENOIOCTLCMD)
1149 return -EPIPE;
1150
1151 if (src_fmt.format.width != sink_fmt.format.width ||
1152 src_fmt.format.height != sink_fmt.format.height ||
1153 src_fmt.format.code != sink_fmt.format.code)
1154 return -EPIPE;
1155
1156 if (sd == p->subdevs[IDX_SENSOR] &&
1157 fimc_user_defined_mbus_fmt(src_fmt.format.code)) {
1158 struct v4l2_plane_pix_format plane_fmt[FIMC_MAX_PLANES];
1159 struct fimc_frame *frame = &vc->ctx->d_frame;
1160 unsigned int i;
1161
1162 ret = fimc_get_sensor_frame_desc(sd, plane_fmt,
1163 frame->fmt->memplanes,
1164 false);
1165 if (ret < 0)
1166 return -EPIPE;
1167
1168 for (i = 0; i < frame->fmt->memplanes; i++)
1169 if (frame->payload[i] < plane_fmt[i].sizeimage)
1170 return -EPIPE;
1171 }
1172 }
1173 return 0;
1174 }
1175
fimc_cap_streamon(struct file * file,void * priv,enum v4l2_buf_type type)1176 static int fimc_cap_streamon(struct file *file, void *priv,
1177 enum v4l2_buf_type type)
1178 {
1179 struct fimc_dev *fimc = video_drvdata(file);
1180 struct fimc_vid_cap *vc = &fimc->vid_cap;
1181 struct media_entity *entity = &vc->ve.vdev.entity;
1182 struct fimc_source_info *si = NULL;
1183 struct v4l2_subdev *sd;
1184 int ret;
1185
1186 if (fimc_capture_active(fimc))
1187 return -EBUSY;
1188
1189 ret = media_pipeline_start(entity, &vc->ve.pipe->mp);
1190 if (ret < 0)
1191 return ret;
1192
1193 sd = __fimc_md_get_subdev(vc->ve.pipe, IDX_SENSOR);
1194 if (sd)
1195 si = v4l2_get_subdev_hostdata(sd);
1196
1197 if (si == NULL) {
1198 ret = -EPIPE;
1199 goto err_p_stop;
1200 }
1201 /*
1202 * Save configuration data related to currently attached image
1203 * sensor or other data source, e.g. FIMC-IS.
1204 */
1205 vc->source_config = *si;
1206
1207 if (vc->input == GRP_ID_FIMC_IS)
1208 vc->source_config.fimc_bus_type = FIMC_BUS_TYPE_ISP_WRITEBACK;
1209
1210 if (vc->user_subdev_api) {
1211 ret = fimc_pipeline_validate(fimc);
1212 if (ret < 0)
1213 goto err_p_stop;
1214 }
1215
1216 ret = vb2_ioctl_streamon(file, priv, type);
1217 if (!ret) {
1218 vc->streaming = true;
1219 return ret;
1220 }
1221
1222 err_p_stop:
1223 media_pipeline_stop(entity);
1224 return ret;
1225 }
1226
fimc_cap_streamoff(struct file * file,void * priv,enum v4l2_buf_type type)1227 static int fimc_cap_streamoff(struct file *file, void *priv,
1228 enum v4l2_buf_type type)
1229 {
1230 struct fimc_dev *fimc = video_drvdata(file);
1231 struct fimc_vid_cap *vc = &fimc->vid_cap;
1232 int ret;
1233
1234 ret = vb2_ioctl_streamoff(file, priv, type);
1235 if (ret < 0)
1236 return ret;
1237
1238 if (vc->streaming) {
1239 media_pipeline_stop(&vc->ve.vdev.entity);
1240 vc->streaming = false;
1241 }
1242
1243 return 0;
1244 }
1245
fimc_cap_reqbufs(struct file * file,void * priv,struct v4l2_requestbuffers * reqbufs)1246 static int fimc_cap_reqbufs(struct file *file, void *priv,
1247 struct v4l2_requestbuffers *reqbufs)
1248 {
1249 struct fimc_dev *fimc = video_drvdata(file);
1250 int ret;
1251
1252 ret = vb2_ioctl_reqbufs(file, priv, reqbufs);
1253
1254 if (!ret)
1255 fimc->vid_cap.reqbufs_count = reqbufs->count;
1256
1257 return ret;
1258 }
1259
fimc_cap_g_selection(struct file * file,void * fh,struct v4l2_selection * s)1260 static int fimc_cap_g_selection(struct file *file, void *fh,
1261 struct v4l2_selection *s)
1262 {
1263 struct fimc_dev *fimc = video_drvdata(file);
1264 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1265 struct fimc_frame *f = &ctx->s_frame;
1266
1267 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1268 return -EINVAL;
1269
1270 switch (s->target) {
1271 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
1272 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1273 f = &ctx->d_frame;
1274 fallthrough;
1275 case V4L2_SEL_TGT_CROP_BOUNDS:
1276 case V4L2_SEL_TGT_CROP_DEFAULT:
1277 s->r.left = 0;
1278 s->r.top = 0;
1279 s->r.width = f->o_width;
1280 s->r.height = f->o_height;
1281 return 0;
1282
1283 case V4L2_SEL_TGT_COMPOSE:
1284 f = &ctx->d_frame;
1285 fallthrough;
1286 case V4L2_SEL_TGT_CROP:
1287 s->r.left = f->offs_h;
1288 s->r.top = f->offs_v;
1289 s->r.width = f->width;
1290 s->r.height = f->height;
1291 return 0;
1292 }
1293
1294 return -EINVAL;
1295 }
1296
fimc_cap_s_selection(struct file * file,void * fh,struct v4l2_selection * s)1297 static int fimc_cap_s_selection(struct file *file, void *fh,
1298 struct v4l2_selection *s)
1299 {
1300 struct fimc_dev *fimc = video_drvdata(file);
1301 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1302 struct v4l2_rect rect = s->r;
1303 struct fimc_frame *f;
1304 unsigned long flags;
1305
1306 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1307 return -EINVAL;
1308
1309 if (s->target == V4L2_SEL_TGT_COMPOSE)
1310 f = &ctx->d_frame;
1311 else if (s->target == V4L2_SEL_TGT_CROP)
1312 f = &ctx->s_frame;
1313 else
1314 return -EINVAL;
1315
1316 fimc_capture_try_selection(ctx, &rect, s->target);
1317
1318 if (s->flags & V4L2_SEL_FLAG_LE &&
1319 !v4l2_rect_enclosed(&rect, &s->r))
1320 return -ERANGE;
1321
1322 if (s->flags & V4L2_SEL_FLAG_GE &&
1323 !v4l2_rect_enclosed(&s->r, &rect))
1324 return -ERANGE;
1325
1326 s->r = rect;
1327 spin_lock_irqsave(&fimc->slock, flags);
1328 set_frame_crop(f, s->r.left, s->r.top, s->r.width,
1329 s->r.height);
1330 spin_unlock_irqrestore(&fimc->slock, flags);
1331
1332 set_bit(ST_CAPT_APPLY_CFG, &fimc->state);
1333 return 0;
1334 }
1335
1336 static const struct v4l2_ioctl_ops fimc_capture_ioctl_ops = {
1337 .vidioc_querycap = fimc_cap_querycap,
1338
1339 .vidioc_enum_fmt_vid_cap = fimc_cap_enum_fmt,
1340 .vidioc_try_fmt_vid_cap_mplane = fimc_cap_try_fmt_mplane,
1341 .vidioc_s_fmt_vid_cap_mplane = fimc_cap_s_fmt_mplane,
1342 .vidioc_g_fmt_vid_cap_mplane = fimc_cap_g_fmt_mplane,
1343
1344 .vidioc_reqbufs = fimc_cap_reqbufs,
1345 .vidioc_querybuf = vb2_ioctl_querybuf,
1346 .vidioc_qbuf = vb2_ioctl_qbuf,
1347 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1348 .vidioc_expbuf = vb2_ioctl_expbuf,
1349 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
1350 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1351
1352 .vidioc_streamon = fimc_cap_streamon,
1353 .vidioc_streamoff = fimc_cap_streamoff,
1354
1355 .vidioc_g_selection = fimc_cap_g_selection,
1356 .vidioc_s_selection = fimc_cap_s_selection,
1357
1358 .vidioc_enum_input = fimc_cap_enum_input,
1359 .vidioc_s_input = fimc_cap_s_input,
1360 .vidioc_g_input = fimc_cap_g_input,
1361 };
1362
1363 /* Capture subdev media entity operations */
fimc_link_setup(struct media_entity * entity,const struct media_pad * local,const struct media_pad * remote,u32 flags)1364 static int fimc_link_setup(struct media_entity *entity,
1365 const struct media_pad *local,
1366 const struct media_pad *remote, u32 flags)
1367 {
1368 struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
1369 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1370 struct fimc_vid_cap *vc = &fimc->vid_cap;
1371 struct v4l2_subdev *sensor;
1372
1373 if (!is_media_entity_v4l2_subdev(remote->entity))
1374 return -EINVAL;
1375
1376 if (WARN_ON(fimc == NULL))
1377 return 0;
1378
1379 dbg("%s --> %s, flags: 0x%x. input: 0x%x",
1380 local->entity->name, remote->entity->name, flags,
1381 fimc->vid_cap.input);
1382
1383 if (!(flags & MEDIA_LNK_FL_ENABLED)) {
1384 fimc->vid_cap.input = 0;
1385 return 0;
1386 }
1387
1388 if (vc->input != 0)
1389 return -EBUSY;
1390
1391 vc->input = sd->grp_id;
1392
1393 if (vc->user_subdev_api)
1394 return 0;
1395
1396 /* Inherit V4L2 controls from the image sensor subdev. */
1397 sensor = fimc_find_remote_sensor(&vc->subdev.entity);
1398 if (sensor == NULL)
1399 return 0;
1400
1401 return v4l2_ctrl_add_handler(&vc->ctx->ctrls.handler,
1402 sensor->ctrl_handler, NULL, true);
1403 }
1404
1405 static const struct media_entity_operations fimc_sd_media_ops = {
1406 .link_setup = fimc_link_setup,
1407 };
1408
1409 /**
1410 * fimc_sensor_notify - v4l2_device notification from a sensor subdev
1411 * @sd: pointer to a subdev generating the notification
1412 * @notification: the notification type, must be S5P_FIMC_TX_END_NOTIFY
1413 * @arg: pointer to an u32 type integer that stores the frame payload value
1414 *
1415 * The End Of Frame notification sent by sensor subdev in its still capture
1416 * mode. If there is only a single VSYNC generated by the sensor at the
1417 * beginning of a frame transmission, FIMC does not issue the LastIrq
1418 * (end of frame) interrupt. And this notification is used to complete the
1419 * frame capture and returning a buffer to user-space. Subdev drivers should
1420 * call this notification from their last 'End of frame capture' interrupt.
1421 */
fimc_sensor_notify(struct v4l2_subdev * sd,unsigned int notification,void * arg)1422 void fimc_sensor_notify(struct v4l2_subdev *sd, unsigned int notification,
1423 void *arg)
1424 {
1425 struct fimc_source_info *si;
1426 struct fimc_vid_buffer *buf;
1427 struct fimc_md *fmd;
1428 struct fimc_dev *fimc;
1429 unsigned long flags;
1430
1431 if (sd == NULL)
1432 return;
1433
1434 si = v4l2_get_subdev_hostdata(sd);
1435 fmd = entity_to_fimc_mdev(&sd->entity);
1436
1437 spin_lock_irqsave(&fmd->slock, flags);
1438
1439 fimc = si ? source_to_sensor_info(si)->host : NULL;
1440
1441 if (fimc && arg && notification == S5P_FIMC_TX_END_NOTIFY &&
1442 test_bit(ST_CAPT_PEND, &fimc->state)) {
1443 unsigned long irq_flags;
1444 spin_lock_irqsave(&fimc->slock, irq_flags);
1445 if (!list_empty(&fimc->vid_cap.active_buf_q)) {
1446 buf = list_entry(fimc->vid_cap.active_buf_q.next,
1447 struct fimc_vid_buffer, list);
1448 vb2_set_plane_payload(&buf->vb.vb2_buf, 0,
1449 *((u32 *)arg));
1450 }
1451 fimc_capture_irq_handler(fimc, 1);
1452 fimc_deactivate_capture(fimc);
1453 spin_unlock_irqrestore(&fimc->slock, irq_flags);
1454 }
1455 spin_unlock_irqrestore(&fmd->slock, flags);
1456 }
1457
fimc_subdev_enum_mbus_code(struct v4l2_subdev * sd,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_mbus_code_enum * code)1458 static int fimc_subdev_enum_mbus_code(struct v4l2_subdev *sd,
1459 struct v4l2_subdev_pad_config *cfg,
1460 struct v4l2_subdev_mbus_code_enum *code)
1461 {
1462 struct fimc_fmt *fmt;
1463
1464 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, code->index);
1465 if (!fmt)
1466 return -EINVAL;
1467 code->code = fmt->mbus_code;
1468 return 0;
1469 }
1470
fimc_subdev_get_fmt(struct v4l2_subdev * sd,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_format * fmt)1471 static int fimc_subdev_get_fmt(struct v4l2_subdev *sd,
1472 struct v4l2_subdev_pad_config *cfg,
1473 struct v4l2_subdev_format *fmt)
1474 {
1475 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1476 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1477 struct fimc_frame *ff = &ctx->s_frame;
1478 struct v4l2_mbus_framefmt *mf;
1479
1480 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1481 mf = v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
1482 fmt->format = *mf;
1483 return 0;
1484 }
1485
1486 mf = &fmt->format;
1487 mutex_lock(&fimc->lock);
1488
1489 switch (fmt->pad) {
1490 case FIMC_SD_PAD_SOURCE:
1491 if (!WARN_ON(ff->fmt == NULL))
1492 mf->code = ff->fmt->mbus_code;
1493 /* Sink pads crop rectangle size */
1494 mf->width = ff->width;
1495 mf->height = ff->height;
1496 break;
1497 case FIMC_SD_PAD_SINK_FIFO:
1498 *mf = fimc->vid_cap.wb_fmt;
1499 break;
1500 case FIMC_SD_PAD_SINK_CAM:
1501 default:
1502 *mf = fimc->vid_cap.ci_fmt;
1503 break;
1504 }
1505
1506 mutex_unlock(&fimc->lock);
1507 mf->colorspace = V4L2_COLORSPACE_JPEG;
1508
1509 return 0;
1510 }
1511
fimc_subdev_set_fmt(struct v4l2_subdev * sd,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_format * fmt)1512 static int fimc_subdev_set_fmt(struct v4l2_subdev *sd,
1513 struct v4l2_subdev_pad_config *cfg,
1514 struct v4l2_subdev_format *fmt)
1515 {
1516 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1517 struct v4l2_mbus_framefmt *mf = &fmt->format;
1518 struct fimc_vid_cap *vc = &fimc->vid_cap;
1519 struct fimc_ctx *ctx = vc->ctx;
1520 struct fimc_frame *ff;
1521 struct fimc_fmt *ffmt;
1522
1523 dbg("pad%d: code: 0x%x, %dx%d",
1524 fmt->pad, mf->code, mf->width, mf->height);
1525
1526 if (fmt->pad == FIMC_SD_PAD_SOURCE && vb2_is_busy(&vc->vbq))
1527 return -EBUSY;
1528
1529 mutex_lock(&fimc->lock);
1530 ffmt = fimc_capture_try_format(ctx, &mf->width, &mf->height,
1531 &mf->code, NULL, fmt->pad);
1532 mutex_unlock(&fimc->lock);
1533 mf->colorspace = V4L2_COLORSPACE_JPEG;
1534
1535 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1536 mf = v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
1537 *mf = fmt->format;
1538 return 0;
1539 }
1540 /* There must be a bug in the driver if this happens */
1541 if (WARN_ON(ffmt == NULL))
1542 return -EINVAL;
1543
1544 /* Update RGB Alpha control state and value range */
1545 fimc_alpha_ctrl_update(ctx);
1546
1547 fimc_capture_mark_jpeg_xfer(ctx, ffmt->color);
1548 if (fmt->pad == FIMC_SD_PAD_SOURCE) {
1549 ff = &ctx->d_frame;
1550 /* Sink pads crop rectangle size */
1551 mf->width = ctx->s_frame.width;
1552 mf->height = ctx->s_frame.height;
1553 } else {
1554 ff = &ctx->s_frame;
1555 }
1556
1557 mutex_lock(&fimc->lock);
1558 set_frame_bounds(ff, mf->width, mf->height);
1559
1560 if (fmt->pad == FIMC_SD_PAD_SINK_FIFO)
1561 vc->wb_fmt = *mf;
1562 else if (fmt->pad == FIMC_SD_PAD_SINK_CAM)
1563 vc->ci_fmt = *mf;
1564
1565 ff->fmt = ffmt;
1566
1567 /* Reset the crop rectangle if required. */
1568 if (!(fmt->pad == FIMC_SD_PAD_SOURCE && (ctx->state & FIMC_COMPOSE)))
1569 set_frame_crop(ff, 0, 0, mf->width, mf->height);
1570
1571 if (fmt->pad != FIMC_SD_PAD_SOURCE)
1572 ctx->state &= ~FIMC_COMPOSE;
1573
1574 mutex_unlock(&fimc->lock);
1575 return 0;
1576 }
1577
fimc_subdev_get_selection(struct v4l2_subdev * sd,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_selection * sel)1578 static int fimc_subdev_get_selection(struct v4l2_subdev *sd,
1579 struct v4l2_subdev_pad_config *cfg,
1580 struct v4l2_subdev_selection *sel)
1581 {
1582 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1583 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1584 struct fimc_frame *f = &ctx->s_frame;
1585 struct v4l2_rect *r = &sel->r;
1586 struct v4l2_rect *try_sel;
1587
1588 if (sel->pad == FIMC_SD_PAD_SOURCE)
1589 return -EINVAL;
1590
1591 mutex_lock(&fimc->lock);
1592
1593 switch (sel->target) {
1594 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1595 f = &ctx->d_frame;
1596 fallthrough;
1597 case V4L2_SEL_TGT_CROP_BOUNDS:
1598 r->width = f->o_width;
1599 r->height = f->o_height;
1600 r->left = 0;
1601 r->top = 0;
1602 mutex_unlock(&fimc->lock);
1603 return 0;
1604
1605 case V4L2_SEL_TGT_CROP:
1606 try_sel = v4l2_subdev_get_try_crop(sd, cfg, sel->pad);
1607 break;
1608 case V4L2_SEL_TGT_COMPOSE:
1609 try_sel = v4l2_subdev_get_try_compose(sd, cfg, sel->pad);
1610 f = &ctx->d_frame;
1611 break;
1612 default:
1613 mutex_unlock(&fimc->lock);
1614 return -EINVAL;
1615 }
1616
1617 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1618 sel->r = *try_sel;
1619 } else {
1620 r->left = f->offs_h;
1621 r->top = f->offs_v;
1622 r->width = f->width;
1623 r->height = f->height;
1624 }
1625
1626 dbg("target %#x: l:%d, t:%d, %dx%d, f_w: %d, f_h: %d",
1627 sel->pad, r->left, r->top, r->width, r->height,
1628 f->f_width, f->f_height);
1629
1630 mutex_unlock(&fimc->lock);
1631 return 0;
1632 }
1633
fimc_subdev_set_selection(struct v4l2_subdev * sd,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_selection * sel)1634 static int fimc_subdev_set_selection(struct v4l2_subdev *sd,
1635 struct v4l2_subdev_pad_config *cfg,
1636 struct v4l2_subdev_selection *sel)
1637 {
1638 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1639 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1640 struct fimc_frame *f = &ctx->s_frame;
1641 struct v4l2_rect *r = &sel->r;
1642 struct v4l2_rect *try_sel;
1643 unsigned long flags;
1644
1645 if (sel->pad == FIMC_SD_PAD_SOURCE)
1646 return -EINVAL;
1647
1648 mutex_lock(&fimc->lock);
1649 fimc_capture_try_selection(ctx, r, V4L2_SEL_TGT_CROP);
1650
1651 switch (sel->target) {
1652 case V4L2_SEL_TGT_CROP:
1653 try_sel = v4l2_subdev_get_try_crop(sd, cfg, sel->pad);
1654 break;
1655 case V4L2_SEL_TGT_COMPOSE:
1656 try_sel = v4l2_subdev_get_try_compose(sd, cfg, sel->pad);
1657 f = &ctx->d_frame;
1658 break;
1659 default:
1660 mutex_unlock(&fimc->lock);
1661 return -EINVAL;
1662 }
1663
1664 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1665 *try_sel = sel->r;
1666 } else {
1667 spin_lock_irqsave(&fimc->slock, flags);
1668 set_frame_crop(f, r->left, r->top, r->width, r->height);
1669 set_bit(ST_CAPT_APPLY_CFG, &fimc->state);
1670 if (sel->target == V4L2_SEL_TGT_COMPOSE)
1671 ctx->state |= FIMC_COMPOSE;
1672 spin_unlock_irqrestore(&fimc->slock, flags);
1673 }
1674
1675 dbg("target %#x: (%d,%d)/%dx%d", sel->target, r->left, r->top,
1676 r->width, r->height);
1677
1678 mutex_unlock(&fimc->lock);
1679 return 0;
1680 }
1681
1682 static const struct v4l2_subdev_pad_ops fimc_subdev_pad_ops = {
1683 .enum_mbus_code = fimc_subdev_enum_mbus_code,
1684 .get_selection = fimc_subdev_get_selection,
1685 .set_selection = fimc_subdev_set_selection,
1686 .get_fmt = fimc_subdev_get_fmt,
1687 .set_fmt = fimc_subdev_set_fmt,
1688 };
1689
1690 static const struct v4l2_subdev_ops fimc_subdev_ops = {
1691 .pad = &fimc_subdev_pad_ops,
1692 };
1693
1694 /* Set default format at the sensor and host interface */
fimc_capture_set_default_format(struct fimc_dev * fimc)1695 static int fimc_capture_set_default_format(struct fimc_dev *fimc)
1696 {
1697 struct v4l2_format fmt = {
1698 .type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
1699 .fmt.pix_mp = {
1700 .width = FIMC_DEFAULT_WIDTH,
1701 .height = FIMC_DEFAULT_HEIGHT,
1702 .pixelformat = V4L2_PIX_FMT_YUYV,
1703 .field = V4L2_FIELD_NONE,
1704 .colorspace = V4L2_COLORSPACE_JPEG,
1705 },
1706 };
1707
1708 return __fimc_capture_set_format(fimc, &fmt);
1709 }
1710
1711 /* fimc->lock must be already initialized */
fimc_register_capture_device(struct fimc_dev * fimc,struct v4l2_device * v4l2_dev)1712 static int fimc_register_capture_device(struct fimc_dev *fimc,
1713 struct v4l2_device *v4l2_dev)
1714 {
1715 struct video_device *vfd = &fimc->vid_cap.ve.vdev;
1716 struct vb2_queue *q = &fimc->vid_cap.vbq;
1717 struct fimc_ctx *ctx;
1718 struct fimc_vid_cap *vid_cap;
1719 struct fimc_fmt *fmt;
1720 int ret = -ENOMEM;
1721
1722 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
1723 if (!ctx)
1724 return -ENOMEM;
1725
1726 ctx->fimc_dev = fimc;
1727 ctx->in_path = FIMC_IO_CAMERA;
1728 ctx->out_path = FIMC_IO_DMA;
1729 ctx->state = FIMC_CTX_CAP;
1730 ctx->s_frame.fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, 0);
1731 ctx->d_frame.fmt = ctx->s_frame.fmt;
1732
1733 memset(vfd, 0, sizeof(*vfd));
1734 snprintf(vfd->name, sizeof(vfd->name), "fimc.%d.capture", fimc->id);
1735
1736 vfd->fops = &fimc_capture_fops;
1737 vfd->ioctl_ops = &fimc_capture_ioctl_ops;
1738 vfd->v4l2_dev = v4l2_dev;
1739 vfd->minor = -1;
1740 vfd->release = video_device_release_empty;
1741 vfd->queue = q;
1742 vfd->lock = &fimc->lock;
1743 vfd->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_CAPTURE_MPLANE;
1744
1745 video_set_drvdata(vfd, fimc);
1746 vid_cap = &fimc->vid_cap;
1747 vid_cap->active_buf_cnt = 0;
1748 vid_cap->reqbufs_count = 0;
1749 vid_cap->ctx = ctx;
1750
1751 INIT_LIST_HEAD(&vid_cap->pending_buf_q);
1752 INIT_LIST_HEAD(&vid_cap->active_buf_q);
1753
1754 memset(q, 0, sizeof(*q));
1755 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1756 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1757 q->drv_priv = ctx;
1758 q->ops = &fimc_capture_qops;
1759 q->mem_ops = &vb2_dma_contig_memops;
1760 q->buf_struct_size = sizeof(struct fimc_vid_buffer);
1761 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1762 q->lock = &fimc->lock;
1763 q->dev = &fimc->pdev->dev;
1764
1765 ret = vb2_queue_init(q);
1766 if (ret)
1767 goto err_free_ctx;
1768
1769 /* Default format configuration */
1770 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, 0);
1771 vid_cap->ci_fmt.width = FIMC_DEFAULT_WIDTH;
1772 vid_cap->ci_fmt.height = FIMC_DEFAULT_HEIGHT;
1773 vid_cap->ci_fmt.code = fmt->mbus_code;
1774
1775 ctx->s_frame.width = FIMC_DEFAULT_WIDTH;
1776 ctx->s_frame.height = FIMC_DEFAULT_HEIGHT;
1777 ctx->s_frame.fmt = fmt;
1778
1779 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_WRITEBACK, 0);
1780 vid_cap->wb_fmt = vid_cap->ci_fmt;
1781 vid_cap->wb_fmt.code = fmt->mbus_code;
1782
1783 vid_cap->vd_pad.flags = MEDIA_PAD_FL_SINK;
1784 vfd->entity.function = MEDIA_ENT_F_PROC_VIDEO_SCALER;
1785 ret = media_entity_pads_init(&vfd->entity, 1, &vid_cap->vd_pad);
1786 if (ret)
1787 goto err_free_ctx;
1788
1789 ret = fimc_ctrls_create(ctx);
1790 if (ret)
1791 goto err_me_cleanup;
1792
1793 ret = video_register_device(vfd, VFL_TYPE_VIDEO, -1);
1794 if (ret)
1795 goto err_ctrl_free;
1796
1797 v4l2_info(v4l2_dev, "Registered %s as /dev/%s\n",
1798 vfd->name, video_device_node_name(vfd));
1799
1800 vfd->ctrl_handler = &ctx->ctrls.handler;
1801 return 0;
1802
1803 err_ctrl_free:
1804 fimc_ctrls_delete(ctx);
1805 err_me_cleanup:
1806 media_entity_cleanup(&vfd->entity);
1807 err_free_ctx:
1808 kfree(ctx);
1809 return ret;
1810 }
1811
fimc_capture_subdev_registered(struct v4l2_subdev * sd)1812 static int fimc_capture_subdev_registered(struct v4l2_subdev *sd)
1813 {
1814 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1815 int ret;
1816
1817 if (fimc == NULL)
1818 return -ENXIO;
1819
1820 ret = fimc_register_m2m_device(fimc, sd->v4l2_dev);
1821 if (ret)
1822 return ret;
1823
1824 fimc->vid_cap.ve.pipe = v4l2_get_subdev_hostdata(sd);
1825
1826 ret = fimc_register_capture_device(fimc, sd->v4l2_dev);
1827 if (ret) {
1828 fimc_unregister_m2m_device(fimc);
1829 fimc->vid_cap.ve.pipe = NULL;
1830 }
1831
1832 return ret;
1833 }
1834
fimc_capture_subdev_unregistered(struct v4l2_subdev * sd)1835 static void fimc_capture_subdev_unregistered(struct v4l2_subdev *sd)
1836 {
1837 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1838 struct video_device *vdev;
1839
1840 if (fimc == NULL)
1841 return;
1842
1843 mutex_lock(&fimc->lock);
1844
1845 fimc_unregister_m2m_device(fimc);
1846 vdev = &fimc->vid_cap.ve.vdev;
1847
1848 if (video_is_registered(vdev)) {
1849 video_unregister_device(vdev);
1850 media_entity_cleanup(&vdev->entity);
1851 fimc_ctrls_delete(fimc->vid_cap.ctx);
1852 fimc->vid_cap.ve.pipe = NULL;
1853 }
1854 kfree(fimc->vid_cap.ctx);
1855 fimc->vid_cap.ctx = NULL;
1856
1857 mutex_unlock(&fimc->lock);
1858 }
1859
1860 static const struct v4l2_subdev_internal_ops fimc_capture_sd_internal_ops = {
1861 .registered = fimc_capture_subdev_registered,
1862 .unregistered = fimc_capture_subdev_unregistered,
1863 };
1864
fimc_initialize_capture_subdev(struct fimc_dev * fimc)1865 int fimc_initialize_capture_subdev(struct fimc_dev *fimc)
1866 {
1867 struct v4l2_subdev *sd = &fimc->vid_cap.subdev;
1868 int ret;
1869
1870 v4l2_subdev_init(sd, &fimc_subdev_ops);
1871 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1872 snprintf(sd->name, sizeof(sd->name), "FIMC.%d", fimc->id);
1873
1874 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK_CAM].flags = MEDIA_PAD_FL_SINK;
1875 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK_FIFO].flags = MEDIA_PAD_FL_SINK;
1876 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
1877 ret = media_entity_pads_init(&sd->entity, FIMC_SD_PADS_NUM,
1878 fimc->vid_cap.sd_pads);
1879 if (ret)
1880 return ret;
1881
1882 sd->entity.ops = &fimc_sd_media_ops;
1883 sd->entity.function = MEDIA_ENT_F_PROC_VIDEO_SCALER;
1884 sd->internal_ops = &fimc_capture_sd_internal_ops;
1885 v4l2_set_subdevdata(sd, fimc);
1886 return 0;
1887 }
1888
fimc_unregister_capture_subdev(struct fimc_dev * fimc)1889 void fimc_unregister_capture_subdev(struct fimc_dev *fimc)
1890 {
1891 struct v4l2_subdev *sd = &fimc->vid_cap.subdev;
1892
1893 v4l2_device_unregister_subdev(sd);
1894 media_entity_cleanup(&sd->entity);
1895 v4l2_set_subdevdata(sd, NULL);
1896 }
1897