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_resume_and_get(&fimc->pdev->dev);
482 if (ret < 0)
483 goto unlock;
484
485 ret = v4l2_fh_open(file);
486 if (ret) {
487 pm_runtime_put_sync(&fimc->pdev->dev);
488 goto unlock;
489 }
490
491 if (v4l2_fh_is_singular_file(file)) {
492 fimc_md_graph_lock(ve);
493
494 ret = fimc_pipeline_call(ve, open, &ve->vdev.entity, true);
495
496 if (ret == 0)
497 ve->vdev.entity.use_count++;
498
499 fimc_md_graph_unlock(ve);
500
501 if (ret == 0)
502 ret = fimc_capture_set_default_format(fimc);
503
504 if (ret < 0) {
505 clear_bit(ST_CAPT_BUSY, &fimc->state);
506 pm_runtime_put_sync(&fimc->pdev->dev);
507 v4l2_fh_release(file);
508 }
509 }
510 unlock:
511 mutex_unlock(&fimc->lock);
512 return ret;
513 }
514
fimc_capture_release(struct file * file)515 static int fimc_capture_release(struct file *file)
516 {
517 struct fimc_dev *fimc = video_drvdata(file);
518 struct fimc_vid_cap *vc = &fimc->vid_cap;
519 bool close = v4l2_fh_is_singular_file(file);
520 int ret;
521
522 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
523
524 mutex_lock(&fimc->lock);
525
526 if (close && vc->streaming) {
527 media_pipeline_stop(&vc->ve.vdev.entity);
528 vc->streaming = false;
529 }
530
531 ret = _vb2_fop_release(file, NULL);
532
533 if (close) {
534 clear_bit(ST_CAPT_BUSY, &fimc->state);
535 fimc_pipeline_call(&vc->ve, close);
536 clear_bit(ST_CAPT_SUSPENDED, &fimc->state);
537
538 fimc_md_graph_lock(&vc->ve);
539 vc->ve.vdev.entity.use_count--;
540 fimc_md_graph_unlock(&vc->ve);
541 }
542
543 pm_runtime_put_sync(&fimc->pdev->dev);
544 mutex_unlock(&fimc->lock);
545
546 return ret;
547 }
548
549 static const struct v4l2_file_operations fimc_capture_fops = {
550 .owner = THIS_MODULE,
551 .open = fimc_capture_open,
552 .release = fimc_capture_release,
553 .poll = vb2_fop_poll,
554 .unlocked_ioctl = video_ioctl2,
555 .mmap = vb2_fop_mmap,
556 };
557
558 /*
559 * Format and crop negotiation helpers
560 */
561
fimc_capture_try_format(struct fimc_ctx * ctx,u32 * width,u32 * height,u32 * code,u32 * fourcc,int pad)562 static struct fimc_fmt *fimc_capture_try_format(struct fimc_ctx *ctx,
563 u32 *width, u32 *height,
564 u32 *code, u32 *fourcc, int pad)
565 {
566 bool rotation = ctx->rotation == 90 || ctx->rotation == 270;
567 struct fimc_dev *fimc = ctx->fimc_dev;
568 const struct fimc_variant *var = fimc->variant;
569 const struct fimc_pix_limit *pl = var->pix_limit;
570 struct fimc_frame *dst = &ctx->d_frame;
571 u32 depth, min_w, max_w, min_h, align_h = 3;
572 u32 mask = FMT_FLAGS_CAM;
573 struct fimc_fmt *ffmt;
574
575 /* Conversion from/to JPEG or User Defined format is not supported */
576 if (code && ctx->s_frame.fmt && pad == FIMC_SD_PAD_SOURCE &&
577 fimc_fmt_is_user_defined(ctx->s_frame.fmt->color))
578 *code = ctx->s_frame.fmt->mbus_code;
579
580 if (fourcc && *fourcc != V4L2_PIX_FMT_JPEG && pad == FIMC_SD_PAD_SOURCE)
581 mask |= FMT_FLAGS_M2M;
582
583 if (pad == FIMC_SD_PAD_SINK_FIFO)
584 mask = FMT_FLAGS_WRITEBACK;
585
586 ffmt = fimc_find_format(fourcc, code, mask, 0);
587 if (WARN_ON(!ffmt))
588 return NULL;
589
590 if (code)
591 *code = ffmt->mbus_code;
592 if (fourcc)
593 *fourcc = ffmt->fourcc;
594
595 if (pad != FIMC_SD_PAD_SOURCE) {
596 max_w = fimc_fmt_is_user_defined(ffmt->color) ?
597 pl->scaler_dis_w : pl->scaler_en_w;
598 /* Apply the camera input interface pixel constraints */
599 v4l_bound_align_image(width, max_t(u32, *width, 32), max_w, 4,
600 height, max_t(u32, *height, 32),
601 FIMC_CAMIF_MAX_HEIGHT,
602 fimc_fmt_is_user_defined(ffmt->color) ?
603 3 : 1,
604 0);
605 return ffmt;
606 }
607 /* Can't scale or crop in transparent (JPEG) transfer mode */
608 if (fimc_fmt_is_user_defined(ffmt->color)) {
609 *width = ctx->s_frame.f_width;
610 *height = ctx->s_frame.f_height;
611 return ffmt;
612 }
613 /* Apply the scaler and the output DMA constraints */
614 max_w = rotation ? pl->out_rot_en_w : pl->out_rot_dis_w;
615 if (ctx->state & FIMC_COMPOSE) {
616 min_w = dst->offs_h + dst->width;
617 min_h = dst->offs_v + dst->height;
618 } else {
619 min_w = var->min_out_pixsize;
620 min_h = var->min_out_pixsize;
621 }
622 if (var->min_vsize_align == 1 && !rotation)
623 align_h = fimc_fmt_is_rgb(ffmt->color) ? 0 : 1;
624
625 depth = fimc_get_format_depth(ffmt);
626 v4l_bound_align_image(width, min_w, max_w,
627 ffs(var->min_out_pixsize) - 1,
628 height, min_h, FIMC_CAMIF_MAX_HEIGHT,
629 align_h,
630 64/(ALIGN(depth, 8)));
631
632 dbg("pad%d: code: 0x%x, %dx%d. dst fmt: %dx%d",
633 pad, code ? *code : 0, *width, *height,
634 dst->f_width, dst->f_height);
635
636 return ffmt;
637 }
638
fimc_capture_try_selection(struct fimc_ctx * ctx,struct v4l2_rect * r,int target)639 static void fimc_capture_try_selection(struct fimc_ctx *ctx,
640 struct v4l2_rect *r,
641 int target)
642 {
643 bool rotate = ctx->rotation == 90 || ctx->rotation == 270;
644 struct fimc_dev *fimc = ctx->fimc_dev;
645 const struct fimc_variant *var = fimc->variant;
646 const struct fimc_pix_limit *pl = var->pix_limit;
647 struct fimc_frame *sink = &ctx->s_frame;
648 u32 max_w, max_h, min_w = 0, min_h = 0, min_sz;
649 u32 align_sz = 0, align_h = 4;
650 u32 max_sc_h, max_sc_v;
651
652 /* In JPEG transparent transfer mode cropping is not supported */
653 if (fimc_fmt_is_user_defined(ctx->d_frame.fmt->color)) {
654 r->width = sink->f_width;
655 r->height = sink->f_height;
656 r->left = r->top = 0;
657 return;
658 }
659 if (target == V4L2_SEL_TGT_COMPOSE) {
660 u32 tmp_min_h = ffs(sink->width) - 3;
661 u32 tmp_min_v = ffs(sink->height) - 1;
662
663 if (ctx->rotation != 90 && ctx->rotation != 270)
664 align_h = 1;
665 max_sc_h = min(SCALER_MAX_HRATIO, 1 << tmp_min_h);
666 max_sc_v = min(SCALER_MAX_VRATIO, 1 << tmp_min_v);
667 min_sz = var->min_out_pixsize;
668 } else {
669 u32 depth = fimc_get_format_depth(sink->fmt);
670 align_sz = 64/ALIGN(depth, 8);
671 min_sz = var->min_inp_pixsize;
672 min_w = min_h = min_sz;
673 max_sc_h = max_sc_v = 1;
674 }
675 /*
676 * For the compose rectangle the following constraints must be met:
677 * - it must fit in the sink pad format rectangle (f_width/f_height);
678 * - maximum downscaling ratio is 64;
679 * - maximum crop size depends if the rotator is used or not;
680 * - the sink pad format width/height must be 4 multiple of the
681 * prescaler ratios determined by sink pad size and source pad crop,
682 * the prescaler ratio is returned by fimc_get_scaler_factor().
683 */
684 max_w = min_t(u32,
685 rotate ? pl->out_rot_en_w : pl->out_rot_dis_w,
686 rotate ? sink->f_height : sink->f_width);
687 max_h = min_t(u32, FIMC_CAMIF_MAX_HEIGHT, sink->f_height);
688
689 if (target == V4L2_SEL_TGT_COMPOSE) {
690 min_w = min_t(u32, max_w, sink->f_width / max_sc_h);
691 min_h = min_t(u32, max_h, sink->f_height / max_sc_v);
692 if (rotate) {
693 swap(max_sc_h, max_sc_v);
694 swap(min_w, min_h);
695 }
696 }
697 v4l_bound_align_image(&r->width, min_w, max_w, ffs(min_sz) - 1,
698 &r->height, min_h, max_h, align_h,
699 align_sz);
700 /* Adjust left/top if crop/compose rectangle is out of bounds */
701 r->left = clamp_t(u32, r->left, 0, sink->f_width - r->width);
702 r->top = clamp_t(u32, r->top, 0, sink->f_height - r->height);
703 r->left = round_down(r->left, var->hor_offs_align);
704
705 dbg("target %#x: (%d,%d)/%dx%d, sink fmt: %dx%d",
706 target, r->left, r->top, r->width, r->height,
707 sink->f_width, sink->f_height);
708 }
709
710 /*
711 * The video node ioctl operations
712 */
fimc_cap_querycap(struct file * file,void * priv,struct v4l2_capability * cap)713 static int fimc_cap_querycap(struct file *file, void *priv,
714 struct v4l2_capability *cap)
715 {
716 struct fimc_dev *fimc = video_drvdata(file);
717
718 __fimc_vidioc_querycap(&fimc->pdev->dev, cap);
719 return 0;
720 }
721
fimc_cap_enum_fmt(struct file * file,void * priv,struct v4l2_fmtdesc * f)722 static int fimc_cap_enum_fmt(struct file *file, void *priv,
723 struct v4l2_fmtdesc *f)
724 {
725 struct fimc_fmt *fmt;
726
727 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM | FMT_FLAGS_M2M,
728 f->index);
729 if (!fmt)
730 return -EINVAL;
731 f->pixelformat = fmt->fourcc;
732 return 0;
733 }
734
fimc_pipeline_get_head(struct media_entity * me)735 static struct media_entity *fimc_pipeline_get_head(struct media_entity *me)
736 {
737 struct media_pad *pad = &me->pads[0];
738
739 while (!(pad->flags & MEDIA_PAD_FL_SOURCE)) {
740 pad = media_entity_remote_pad(pad);
741 if (!pad)
742 break;
743 me = pad->entity;
744 pad = &me->pads[0];
745 }
746
747 return me;
748 }
749
750 /**
751 * fimc_pipeline_try_format - negotiate and/or set formats at pipeline
752 * elements
753 * @ctx: FIMC capture context
754 * @tfmt: media bus format to try/set on subdevs
755 * @fmt_id: fimc pixel format id corresponding to returned @tfmt (output)
756 * @set: true to set format on subdevs, false to try only
757 */
fimc_pipeline_try_format(struct fimc_ctx * ctx,struct v4l2_mbus_framefmt * tfmt,struct fimc_fmt ** fmt_id,bool set)758 static int fimc_pipeline_try_format(struct fimc_ctx *ctx,
759 struct v4l2_mbus_framefmt *tfmt,
760 struct fimc_fmt **fmt_id,
761 bool set)
762 {
763 struct fimc_dev *fimc = ctx->fimc_dev;
764 struct fimc_pipeline *p = to_fimc_pipeline(fimc->vid_cap.ve.pipe);
765 struct v4l2_subdev *sd = p->subdevs[IDX_SENSOR];
766 struct v4l2_subdev_format sfmt;
767 struct v4l2_mbus_framefmt *mf = &sfmt.format;
768 struct media_entity *me;
769 struct fimc_fmt *ffmt;
770 struct media_pad *pad;
771 int ret, i = 1;
772 u32 fcc;
773
774 if (WARN_ON(!sd || !tfmt))
775 return -EINVAL;
776
777 memset(&sfmt, 0, sizeof(sfmt));
778 sfmt.format = *tfmt;
779 sfmt.which = set ? V4L2_SUBDEV_FORMAT_ACTIVE : V4L2_SUBDEV_FORMAT_TRY;
780
781 me = fimc_pipeline_get_head(&sd->entity);
782
783 while (1) {
784 ffmt = fimc_find_format(NULL, mf->code != 0 ? &mf->code : NULL,
785 FMT_FLAGS_CAM, i++);
786 if (ffmt == NULL) {
787 /*
788 * Notify user-space if common pixel code for
789 * host and sensor does not exist.
790 */
791 return -EINVAL;
792 }
793 mf->code = tfmt->code = ffmt->mbus_code;
794
795 /* set format on all pipeline subdevs */
796 while (me != &fimc->vid_cap.subdev.entity) {
797 sd = media_entity_to_v4l2_subdev(me);
798
799 sfmt.pad = 0;
800 ret = v4l2_subdev_call(sd, pad, set_fmt, NULL, &sfmt);
801 if (ret)
802 return ret;
803
804 if (me->pads[0].flags & MEDIA_PAD_FL_SINK) {
805 sfmt.pad = me->num_pads - 1;
806 mf->code = tfmt->code;
807 ret = v4l2_subdev_call(sd, pad, set_fmt, NULL,
808 &sfmt);
809 if (ret)
810 return ret;
811 }
812
813 pad = media_entity_remote_pad(&me->pads[sfmt.pad]);
814 if (!pad)
815 return -EINVAL;
816 me = pad->entity;
817 }
818
819 if (mf->code != tfmt->code)
820 continue;
821
822 fcc = ffmt->fourcc;
823 tfmt->width = mf->width;
824 tfmt->height = mf->height;
825 ffmt = fimc_capture_try_format(ctx, &tfmt->width, &tfmt->height,
826 NULL, &fcc, FIMC_SD_PAD_SINK_CAM);
827 ffmt = fimc_capture_try_format(ctx, &tfmt->width, &tfmt->height,
828 NULL, &fcc, FIMC_SD_PAD_SOURCE);
829 if (ffmt && ffmt->mbus_code)
830 mf->code = ffmt->mbus_code;
831 if (mf->width != tfmt->width || mf->height != tfmt->height)
832 continue;
833 tfmt->code = mf->code;
834 break;
835 }
836
837 if (fmt_id && ffmt)
838 *fmt_id = ffmt;
839 *tfmt = *mf;
840
841 return 0;
842 }
843
844 /**
845 * fimc_get_sensor_frame_desc - query the sensor for media bus frame parameters
846 * @sensor: pointer to the sensor subdev
847 * @plane_fmt: provides plane sizes corresponding to the frame layout entries
848 * @num_planes: number of planes
849 * @try: true to set the frame parameters, false to query only
850 *
851 * This function is used by this driver only for compressed/blob data formats.
852 */
fimc_get_sensor_frame_desc(struct v4l2_subdev * sensor,struct v4l2_plane_pix_format * plane_fmt,unsigned int num_planes,bool try)853 static int fimc_get_sensor_frame_desc(struct v4l2_subdev *sensor,
854 struct v4l2_plane_pix_format *plane_fmt,
855 unsigned int num_planes, bool try)
856 {
857 struct v4l2_mbus_frame_desc fd;
858 int i, ret;
859 int pad;
860
861 for (i = 0; i < num_planes; i++)
862 fd.entry[i].length = plane_fmt[i].sizeimage;
863
864 pad = sensor->entity.num_pads - 1;
865 if (try)
866 ret = v4l2_subdev_call(sensor, pad, set_frame_desc, pad, &fd);
867 else
868 ret = v4l2_subdev_call(sensor, pad, get_frame_desc, pad, &fd);
869
870 if (ret < 0)
871 return ret;
872
873 if (num_planes != fd.num_entries)
874 return -EINVAL;
875
876 for (i = 0; i < num_planes; i++)
877 plane_fmt[i].sizeimage = fd.entry[i].length;
878
879 if (fd.entry[0].length > FIMC_MAX_JPEG_BUF_SIZE) {
880 v4l2_err(sensor->v4l2_dev, "Unsupported buffer size: %u\n",
881 fd.entry[0].length);
882
883 return -EINVAL;
884 }
885
886 return 0;
887 }
888
fimc_cap_g_fmt_mplane(struct file * file,void * fh,struct v4l2_format * f)889 static int fimc_cap_g_fmt_mplane(struct file *file, void *fh,
890 struct v4l2_format *f)
891 {
892 struct fimc_dev *fimc = video_drvdata(file);
893
894 __fimc_get_format(&fimc->vid_cap.ctx->d_frame, f);
895 return 0;
896 }
897
898 /*
899 * Try or set format on the fimc.X.capture video node and additionally
900 * on the whole pipeline if @try is false.
901 * Locking: the caller must _not_ hold the graph mutex.
902 */
__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)903 static int __video_try_or_set_format(struct fimc_dev *fimc,
904 struct v4l2_format *f, bool try,
905 struct fimc_fmt **inp_fmt,
906 struct fimc_fmt **out_fmt)
907 {
908 struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
909 struct fimc_vid_cap *vc = &fimc->vid_cap;
910 struct exynos_video_entity *ve = &vc->ve;
911 struct fimc_ctx *ctx = vc->ctx;
912 unsigned int width = 0, height = 0;
913 int ret = 0;
914
915 /* Pre-configure format at the camera input interface, for JPEG only */
916 if (fimc_jpeg_fourcc(pix->pixelformat)) {
917 fimc_capture_try_format(ctx, &pix->width, &pix->height,
918 NULL, &pix->pixelformat,
919 FIMC_SD_PAD_SINK_CAM);
920 if (try) {
921 width = pix->width;
922 height = pix->height;
923 } else {
924 ctx->s_frame.f_width = pix->width;
925 ctx->s_frame.f_height = pix->height;
926 }
927 }
928
929 /* Try the format at the scaler and the DMA output */
930 *out_fmt = fimc_capture_try_format(ctx, &pix->width, &pix->height,
931 NULL, &pix->pixelformat,
932 FIMC_SD_PAD_SOURCE);
933 if (*out_fmt == NULL)
934 return -EINVAL;
935
936 /* Restore image width/height for JPEG (no resizing supported). */
937 if (try && fimc_jpeg_fourcc(pix->pixelformat)) {
938 pix->width = width;
939 pix->height = height;
940 }
941
942 /* Try to match format at the host and the sensor */
943 if (!vc->user_subdev_api) {
944 struct v4l2_mbus_framefmt mbus_fmt;
945 struct v4l2_mbus_framefmt *mf;
946
947 mf = try ? &mbus_fmt : &fimc->vid_cap.ci_fmt;
948
949 mf->code = (*out_fmt)->mbus_code;
950 mf->width = pix->width;
951 mf->height = pix->height;
952
953 fimc_md_graph_lock(ve);
954 ret = fimc_pipeline_try_format(ctx, mf, inp_fmt, try);
955 fimc_md_graph_unlock(ve);
956
957 if (ret < 0)
958 return ret;
959
960 pix->width = mf->width;
961 pix->height = mf->height;
962 }
963
964 fimc_adjust_mplane_format(*out_fmt, pix->width, pix->height, pix);
965
966 if ((*out_fmt)->flags & FMT_FLAGS_COMPRESSED) {
967 struct v4l2_subdev *sensor;
968
969 fimc_md_graph_lock(ve);
970
971 sensor = __fimc_md_get_subdev(ve->pipe, IDX_SENSOR);
972 if (sensor)
973 fimc_get_sensor_frame_desc(sensor, pix->plane_fmt,
974 (*out_fmt)->memplanes, try);
975 else
976 ret = -EPIPE;
977
978 fimc_md_graph_unlock(ve);
979 }
980
981 return ret;
982 }
983
fimc_cap_try_fmt_mplane(struct file * file,void * fh,struct v4l2_format * f)984 static int fimc_cap_try_fmt_mplane(struct file *file, void *fh,
985 struct v4l2_format *f)
986 {
987 struct fimc_dev *fimc = video_drvdata(file);
988 struct fimc_fmt *out_fmt = NULL, *inp_fmt = NULL;
989
990 return __video_try_or_set_format(fimc, f, true, &inp_fmt, &out_fmt);
991 }
992
fimc_capture_mark_jpeg_xfer(struct fimc_ctx * ctx,enum fimc_color_fmt color)993 static void fimc_capture_mark_jpeg_xfer(struct fimc_ctx *ctx,
994 enum fimc_color_fmt color)
995 {
996 bool jpeg = fimc_fmt_is_user_defined(color);
997
998 ctx->scaler.enabled = !jpeg;
999 fimc_ctrls_activate(ctx, !jpeg);
1000
1001 if (jpeg)
1002 set_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state);
1003 else
1004 clear_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state);
1005 }
1006
__fimc_capture_set_format(struct fimc_dev * fimc,struct v4l2_format * f)1007 static int __fimc_capture_set_format(struct fimc_dev *fimc,
1008 struct v4l2_format *f)
1009 {
1010 struct fimc_vid_cap *vc = &fimc->vid_cap;
1011 struct fimc_ctx *ctx = vc->ctx;
1012 struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
1013 struct fimc_frame *ff = &ctx->d_frame;
1014 struct fimc_fmt *inp_fmt = NULL;
1015 int ret, i;
1016
1017 if (vb2_is_busy(&fimc->vid_cap.vbq))
1018 return -EBUSY;
1019
1020 ret = __video_try_or_set_format(fimc, f, false, &inp_fmt, &ff->fmt);
1021 if (ret < 0)
1022 return ret;
1023
1024 /* Update RGB Alpha control state and value range */
1025 fimc_alpha_ctrl_update(ctx);
1026
1027 for (i = 0; i < ff->fmt->memplanes; i++) {
1028 ff->bytesperline[i] = pix->plane_fmt[i].bytesperline;
1029 ff->payload[i] = pix->plane_fmt[i].sizeimage;
1030 }
1031
1032 set_frame_bounds(ff, pix->width, pix->height);
1033 /* Reset the composition rectangle if not yet configured */
1034 if (!(ctx->state & FIMC_COMPOSE))
1035 set_frame_crop(ff, 0, 0, pix->width, pix->height);
1036
1037 fimc_capture_mark_jpeg_xfer(ctx, ff->fmt->color);
1038
1039 /* Reset cropping and set format at the camera interface input */
1040 if (!vc->user_subdev_api) {
1041 ctx->s_frame.fmt = inp_fmt;
1042 set_frame_bounds(&ctx->s_frame, pix->width, pix->height);
1043 set_frame_crop(&ctx->s_frame, 0, 0, pix->width, pix->height);
1044 }
1045
1046 return ret;
1047 }
1048
fimc_cap_s_fmt_mplane(struct file * file,void * priv,struct v4l2_format * f)1049 static int fimc_cap_s_fmt_mplane(struct file *file, void *priv,
1050 struct v4l2_format *f)
1051 {
1052 struct fimc_dev *fimc = video_drvdata(file);
1053
1054 return __fimc_capture_set_format(fimc, f);
1055 }
1056
fimc_cap_enum_input(struct file * file,void * priv,struct v4l2_input * i)1057 static int fimc_cap_enum_input(struct file *file, void *priv,
1058 struct v4l2_input *i)
1059 {
1060 struct fimc_dev *fimc = video_drvdata(file);
1061 struct exynos_video_entity *ve = &fimc->vid_cap.ve;
1062 struct v4l2_subdev *sd;
1063
1064 if (i->index != 0)
1065 return -EINVAL;
1066
1067 i->type = V4L2_INPUT_TYPE_CAMERA;
1068 fimc_md_graph_lock(ve);
1069 sd = __fimc_md_get_subdev(ve->pipe, IDX_SENSOR);
1070 fimc_md_graph_unlock(ve);
1071
1072 if (sd)
1073 strscpy(i->name, sd->name, sizeof(i->name));
1074
1075 return 0;
1076 }
1077
fimc_cap_s_input(struct file * file,void * priv,unsigned int i)1078 static int fimc_cap_s_input(struct file *file, void *priv, unsigned int i)
1079 {
1080 return i == 0 ? i : -EINVAL;
1081 }
1082
fimc_cap_g_input(struct file * file,void * priv,unsigned int * i)1083 static int fimc_cap_g_input(struct file *file, void *priv, unsigned int *i)
1084 {
1085 *i = 0;
1086 return 0;
1087 }
1088
1089 /**
1090 * fimc_pipeline_validate - check for formats inconsistencies
1091 * between source and sink pad of each link
1092 * @fimc: the FIMC device this context applies to
1093 *
1094 * Return 0 if all formats match or -EPIPE otherwise.
1095 */
fimc_pipeline_validate(struct fimc_dev * fimc)1096 static int fimc_pipeline_validate(struct fimc_dev *fimc)
1097 {
1098 struct v4l2_subdev_format sink_fmt, src_fmt;
1099 struct fimc_vid_cap *vc = &fimc->vid_cap;
1100 struct v4l2_subdev *sd = &vc->subdev;
1101 struct fimc_pipeline *p = to_fimc_pipeline(vc->ve.pipe);
1102 struct media_pad *sink_pad, *src_pad;
1103 int i, ret;
1104
1105 while (1) {
1106 /*
1107 * Find current entity sink pad and any remote sink pad linked
1108 * to it. We stop if there is no sink pad in current entity or
1109 * it is not linked to any other remote entity.
1110 */
1111 src_pad = NULL;
1112
1113 for (i = 0; i < sd->entity.num_pads; i++) {
1114 struct media_pad *p = &sd->entity.pads[i];
1115
1116 if (p->flags & MEDIA_PAD_FL_SINK) {
1117 sink_pad = p;
1118 src_pad = media_entity_remote_pad(sink_pad);
1119 if (src_pad)
1120 break;
1121 }
1122 }
1123
1124 if (!src_pad || !is_media_entity_v4l2_subdev(src_pad->entity))
1125 break;
1126
1127 /* Don't call FIMC subdev operation to avoid nested locking */
1128 if (sd == &vc->subdev) {
1129 struct fimc_frame *ff = &vc->ctx->s_frame;
1130 sink_fmt.format.width = ff->f_width;
1131 sink_fmt.format.height = ff->f_height;
1132 sink_fmt.format.code = ff->fmt ? ff->fmt->mbus_code : 0;
1133 } else {
1134 sink_fmt.pad = sink_pad->index;
1135 sink_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
1136 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &sink_fmt);
1137 if (ret < 0 && ret != -ENOIOCTLCMD)
1138 return -EPIPE;
1139 }
1140
1141 /* Retrieve format at the source pad */
1142 sd = media_entity_to_v4l2_subdev(src_pad->entity);
1143 src_fmt.pad = src_pad->index;
1144 src_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
1145 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &src_fmt);
1146 if (ret < 0 && ret != -ENOIOCTLCMD)
1147 return -EPIPE;
1148
1149 if (src_fmt.format.width != sink_fmt.format.width ||
1150 src_fmt.format.height != sink_fmt.format.height ||
1151 src_fmt.format.code != sink_fmt.format.code)
1152 return -EPIPE;
1153
1154 if (sd == p->subdevs[IDX_SENSOR] &&
1155 fimc_user_defined_mbus_fmt(src_fmt.format.code)) {
1156 struct v4l2_plane_pix_format plane_fmt[FIMC_MAX_PLANES];
1157 struct fimc_frame *frame = &vc->ctx->d_frame;
1158 unsigned int i;
1159
1160 ret = fimc_get_sensor_frame_desc(sd, plane_fmt,
1161 frame->fmt->memplanes,
1162 false);
1163 if (ret < 0)
1164 return -EPIPE;
1165
1166 for (i = 0; i < frame->fmt->memplanes; i++)
1167 if (frame->payload[i] < plane_fmt[i].sizeimage)
1168 return -EPIPE;
1169 }
1170 }
1171 return 0;
1172 }
1173
fimc_cap_streamon(struct file * file,void * priv,enum v4l2_buf_type type)1174 static int fimc_cap_streamon(struct file *file, void *priv,
1175 enum v4l2_buf_type type)
1176 {
1177 struct fimc_dev *fimc = video_drvdata(file);
1178 struct fimc_vid_cap *vc = &fimc->vid_cap;
1179 struct media_entity *entity = &vc->ve.vdev.entity;
1180 struct fimc_source_info *si = NULL;
1181 struct v4l2_subdev *sd;
1182 int ret;
1183
1184 if (fimc_capture_active(fimc))
1185 return -EBUSY;
1186
1187 ret = media_pipeline_start(entity, &vc->ve.pipe->mp);
1188 if (ret < 0)
1189 return ret;
1190
1191 sd = __fimc_md_get_subdev(vc->ve.pipe, IDX_SENSOR);
1192 if (sd)
1193 si = v4l2_get_subdev_hostdata(sd);
1194
1195 if (si == NULL) {
1196 ret = -EPIPE;
1197 goto err_p_stop;
1198 }
1199 /*
1200 * Save configuration data related to currently attached image
1201 * sensor or other data source, e.g. FIMC-IS.
1202 */
1203 vc->source_config = *si;
1204
1205 if (vc->input == GRP_ID_FIMC_IS)
1206 vc->source_config.fimc_bus_type = FIMC_BUS_TYPE_ISP_WRITEBACK;
1207
1208 if (vc->user_subdev_api) {
1209 ret = fimc_pipeline_validate(fimc);
1210 if (ret < 0)
1211 goto err_p_stop;
1212 }
1213
1214 ret = vb2_ioctl_streamon(file, priv, type);
1215 if (!ret) {
1216 vc->streaming = true;
1217 return ret;
1218 }
1219
1220 err_p_stop:
1221 media_pipeline_stop(entity);
1222 return ret;
1223 }
1224
fimc_cap_streamoff(struct file * file,void * priv,enum v4l2_buf_type type)1225 static int fimc_cap_streamoff(struct file *file, void *priv,
1226 enum v4l2_buf_type type)
1227 {
1228 struct fimc_dev *fimc = video_drvdata(file);
1229 struct fimc_vid_cap *vc = &fimc->vid_cap;
1230 int ret;
1231
1232 ret = vb2_ioctl_streamoff(file, priv, type);
1233 if (ret < 0)
1234 return ret;
1235
1236 if (vc->streaming) {
1237 media_pipeline_stop(&vc->ve.vdev.entity);
1238 vc->streaming = false;
1239 }
1240
1241 return 0;
1242 }
1243
fimc_cap_reqbufs(struct file * file,void * priv,struct v4l2_requestbuffers * reqbufs)1244 static int fimc_cap_reqbufs(struct file *file, void *priv,
1245 struct v4l2_requestbuffers *reqbufs)
1246 {
1247 struct fimc_dev *fimc = video_drvdata(file);
1248 int ret;
1249
1250 ret = vb2_ioctl_reqbufs(file, priv, reqbufs);
1251
1252 if (!ret)
1253 fimc->vid_cap.reqbufs_count = reqbufs->count;
1254
1255 return ret;
1256 }
1257
fimc_cap_g_selection(struct file * file,void * fh,struct v4l2_selection * s)1258 static int fimc_cap_g_selection(struct file *file, void *fh,
1259 struct v4l2_selection *s)
1260 {
1261 struct fimc_dev *fimc = video_drvdata(file);
1262 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1263 struct fimc_frame *f = &ctx->s_frame;
1264
1265 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1266 return -EINVAL;
1267
1268 switch (s->target) {
1269 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
1270 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1271 f = &ctx->d_frame;
1272 fallthrough;
1273 case V4L2_SEL_TGT_CROP_BOUNDS:
1274 case V4L2_SEL_TGT_CROP_DEFAULT:
1275 s->r.left = 0;
1276 s->r.top = 0;
1277 s->r.width = f->o_width;
1278 s->r.height = f->o_height;
1279 return 0;
1280
1281 case V4L2_SEL_TGT_COMPOSE:
1282 f = &ctx->d_frame;
1283 fallthrough;
1284 case V4L2_SEL_TGT_CROP:
1285 s->r.left = f->offs_h;
1286 s->r.top = f->offs_v;
1287 s->r.width = f->width;
1288 s->r.height = f->height;
1289 return 0;
1290 }
1291
1292 return -EINVAL;
1293 }
1294
fimc_cap_s_selection(struct file * file,void * fh,struct v4l2_selection * s)1295 static int fimc_cap_s_selection(struct file *file, void *fh,
1296 struct v4l2_selection *s)
1297 {
1298 struct fimc_dev *fimc = video_drvdata(file);
1299 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1300 struct v4l2_rect rect = s->r;
1301 struct fimc_frame *f;
1302 unsigned long flags;
1303
1304 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1305 return -EINVAL;
1306
1307 if (s->target == V4L2_SEL_TGT_COMPOSE)
1308 f = &ctx->d_frame;
1309 else if (s->target == V4L2_SEL_TGT_CROP)
1310 f = &ctx->s_frame;
1311 else
1312 return -EINVAL;
1313
1314 fimc_capture_try_selection(ctx, &rect, s->target);
1315
1316 if (s->flags & V4L2_SEL_FLAG_LE &&
1317 !v4l2_rect_enclosed(&rect, &s->r))
1318 return -ERANGE;
1319
1320 if (s->flags & V4L2_SEL_FLAG_GE &&
1321 !v4l2_rect_enclosed(&s->r, &rect))
1322 return -ERANGE;
1323
1324 s->r = rect;
1325 spin_lock_irqsave(&fimc->slock, flags);
1326 set_frame_crop(f, s->r.left, s->r.top, s->r.width,
1327 s->r.height);
1328 spin_unlock_irqrestore(&fimc->slock, flags);
1329
1330 set_bit(ST_CAPT_APPLY_CFG, &fimc->state);
1331 return 0;
1332 }
1333
1334 static const struct v4l2_ioctl_ops fimc_capture_ioctl_ops = {
1335 .vidioc_querycap = fimc_cap_querycap,
1336
1337 .vidioc_enum_fmt_vid_cap = fimc_cap_enum_fmt,
1338 .vidioc_try_fmt_vid_cap_mplane = fimc_cap_try_fmt_mplane,
1339 .vidioc_s_fmt_vid_cap_mplane = fimc_cap_s_fmt_mplane,
1340 .vidioc_g_fmt_vid_cap_mplane = fimc_cap_g_fmt_mplane,
1341
1342 .vidioc_reqbufs = fimc_cap_reqbufs,
1343 .vidioc_querybuf = vb2_ioctl_querybuf,
1344 .vidioc_qbuf = vb2_ioctl_qbuf,
1345 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1346 .vidioc_expbuf = vb2_ioctl_expbuf,
1347 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
1348 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1349
1350 .vidioc_streamon = fimc_cap_streamon,
1351 .vidioc_streamoff = fimc_cap_streamoff,
1352
1353 .vidioc_g_selection = fimc_cap_g_selection,
1354 .vidioc_s_selection = fimc_cap_s_selection,
1355
1356 .vidioc_enum_input = fimc_cap_enum_input,
1357 .vidioc_s_input = fimc_cap_s_input,
1358 .vidioc_g_input = fimc_cap_g_input,
1359 };
1360
1361 /* Capture subdev media entity operations */
fimc_link_setup(struct media_entity * entity,const struct media_pad * local,const struct media_pad * remote,u32 flags)1362 static int fimc_link_setup(struct media_entity *entity,
1363 const struct media_pad *local,
1364 const struct media_pad *remote, u32 flags)
1365 {
1366 struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
1367 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1368 struct fimc_vid_cap *vc = &fimc->vid_cap;
1369 struct v4l2_subdev *sensor;
1370
1371 if (!is_media_entity_v4l2_subdev(remote->entity))
1372 return -EINVAL;
1373
1374 if (WARN_ON(fimc == NULL))
1375 return 0;
1376
1377 dbg("%s --> %s, flags: 0x%x. input: 0x%x",
1378 local->entity->name, remote->entity->name, flags,
1379 fimc->vid_cap.input);
1380
1381 if (!(flags & MEDIA_LNK_FL_ENABLED)) {
1382 fimc->vid_cap.input = 0;
1383 return 0;
1384 }
1385
1386 if (vc->input != 0)
1387 return -EBUSY;
1388
1389 vc->input = sd->grp_id;
1390
1391 if (vc->user_subdev_api)
1392 return 0;
1393
1394 /* Inherit V4L2 controls from the image sensor subdev. */
1395 sensor = fimc_find_remote_sensor(&vc->subdev.entity);
1396 if (sensor == NULL)
1397 return 0;
1398
1399 return v4l2_ctrl_add_handler(&vc->ctx->ctrls.handler,
1400 sensor->ctrl_handler, NULL, true);
1401 }
1402
1403 static const struct media_entity_operations fimc_sd_media_ops = {
1404 .link_setup = fimc_link_setup,
1405 };
1406
1407 /**
1408 * fimc_sensor_notify - v4l2_device notification from a sensor subdev
1409 * @sd: pointer to a subdev generating the notification
1410 * @notification: the notification type, must be S5P_FIMC_TX_END_NOTIFY
1411 * @arg: pointer to an u32 type integer that stores the frame payload value
1412 *
1413 * The End Of Frame notification sent by sensor subdev in its still capture
1414 * mode. If there is only a single VSYNC generated by the sensor at the
1415 * beginning of a frame transmission, FIMC does not issue the LastIrq
1416 * (end of frame) interrupt. And this notification is used to complete the
1417 * frame capture and returning a buffer to user-space. Subdev drivers should
1418 * call this notification from their last 'End of frame capture' interrupt.
1419 */
fimc_sensor_notify(struct v4l2_subdev * sd,unsigned int notification,void * arg)1420 void fimc_sensor_notify(struct v4l2_subdev *sd, unsigned int notification,
1421 void *arg)
1422 {
1423 struct fimc_source_info *si;
1424 struct fimc_vid_buffer *buf;
1425 struct fimc_md *fmd;
1426 struct fimc_dev *fimc;
1427 unsigned long flags;
1428
1429 if (sd == NULL)
1430 return;
1431
1432 si = v4l2_get_subdev_hostdata(sd);
1433 fmd = entity_to_fimc_mdev(&sd->entity);
1434
1435 spin_lock_irqsave(&fmd->slock, flags);
1436
1437 fimc = si ? source_to_sensor_info(si)->host : NULL;
1438
1439 if (fimc && arg && notification == S5P_FIMC_TX_END_NOTIFY &&
1440 test_bit(ST_CAPT_PEND, &fimc->state)) {
1441 unsigned long irq_flags;
1442 spin_lock_irqsave(&fimc->slock, irq_flags);
1443 if (!list_empty(&fimc->vid_cap.active_buf_q)) {
1444 buf = list_entry(fimc->vid_cap.active_buf_q.next,
1445 struct fimc_vid_buffer, list);
1446 vb2_set_plane_payload(&buf->vb.vb2_buf, 0,
1447 *((u32 *)arg));
1448 }
1449 fimc_capture_irq_handler(fimc, 1);
1450 fimc_deactivate_capture(fimc);
1451 spin_unlock_irqrestore(&fimc->slock, irq_flags);
1452 }
1453 spin_unlock_irqrestore(&fmd->slock, flags);
1454 }
1455
fimc_subdev_enum_mbus_code(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_mbus_code_enum * code)1456 static int fimc_subdev_enum_mbus_code(struct v4l2_subdev *sd,
1457 struct v4l2_subdev_state *sd_state,
1458 struct v4l2_subdev_mbus_code_enum *code)
1459 {
1460 struct fimc_fmt *fmt;
1461
1462 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, code->index);
1463 if (!fmt)
1464 return -EINVAL;
1465 code->code = fmt->mbus_code;
1466 return 0;
1467 }
1468
fimc_subdev_get_fmt(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_format * fmt)1469 static int fimc_subdev_get_fmt(struct v4l2_subdev *sd,
1470 struct v4l2_subdev_state *sd_state,
1471 struct v4l2_subdev_format *fmt)
1472 {
1473 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1474 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1475 struct fimc_frame *ff = &ctx->s_frame;
1476 struct v4l2_mbus_framefmt *mf;
1477
1478 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1479 mf = v4l2_subdev_get_try_format(sd, sd_state, fmt->pad);
1480 fmt->format = *mf;
1481 return 0;
1482 }
1483
1484 mf = &fmt->format;
1485 mutex_lock(&fimc->lock);
1486
1487 switch (fmt->pad) {
1488 case FIMC_SD_PAD_SOURCE:
1489 if (!WARN_ON(ff->fmt == NULL))
1490 mf->code = ff->fmt->mbus_code;
1491 /* Sink pads crop rectangle size */
1492 mf->width = ff->width;
1493 mf->height = ff->height;
1494 break;
1495 case FIMC_SD_PAD_SINK_FIFO:
1496 *mf = fimc->vid_cap.wb_fmt;
1497 break;
1498 case FIMC_SD_PAD_SINK_CAM:
1499 default:
1500 *mf = fimc->vid_cap.ci_fmt;
1501 break;
1502 }
1503
1504 mutex_unlock(&fimc->lock);
1505 mf->colorspace = V4L2_COLORSPACE_JPEG;
1506
1507 return 0;
1508 }
1509
fimc_subdev_set_fmt(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_format * fmt)1510 static int fimc_subdev_set_fmt(struct v4l2_subdev *sd,
1511 struct v4l2_subdev_state *sd_state,
1512 struct v4l2_subdev_format *fmt)
1513 {
1514 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1515 struct v4l2_mbus_framefmt *mf = &fmt->format;
1516 struct fimc_vid_cap *vc = &fimc->vid_cap;
1517 struct fimc_ctx *ctx = vc->ctx;
1518 struct fimc_frame *ff;
1519 struct fimc_fmt *ffmt;
1520
1521 dbg("pad%d: code: 0x%x, %dx%d",
1522 fmt->pad, mf->code, mf->width, mf->height);
1523
1524 if (fmt->pad == FIMC_SD_PAD_SOURCE && vb2_is_busy(&vc->vbq))
1525 return -EBUSY;
1526
1527 mutex_lock(&fimc->lock);
1528 ffmt = fimc_capture_try_format(ctx, &mf->width, &mf->height,
1529 &mf->code, NULL, fmt->pad);
1530 mutex_unlock(&fimc->lock);
1531 mf->colorspace = V4L2_COLORSPACE_JPEG;
1532
1533 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1534 mf = v4l2_subdev_get_try_format(sd, sd_state, fmt->pad);
1535 *mf = fmt->format;
1536 return 0;
1537 }
1538 /* There must be a bug in the driver if this happens */
1539 if (WARN_ON(ffmt == NULL))
1540 return -EINVAL;
1541
1542 /* Update RGB Alpha control state and value range */
1543 fimc_alpha_ctrl_update(ctx);
1544
1545 fimc_capture_mark_jpeg_xfer(ctx, ffmt->color);
1546 if (fmt->pad == FIMC_SD_PAD_SOURCE) {
1547 ff = &ctx->d_frame;
1548 /* Sink pads crop rectangle size */
1549 mf->width = ctx->s_frame.width;
1550 mf->height = ctx->s_frame.height;
1551 } else {
1552 ff = &ctx->s_frame;
1553 }
1554
1555 mutex_lock(&fimc->lock);
1556 set_frame_bounds(ff, mf->width, mf->height);
1557
1558 if (fmt->pad == FIMC_SD_PAD_SINK_FIFO)
1559 vc->wb_fmt = *mf;
1560 else if (fmt->pad == FIMC_SD_PAD_SINK_CAM)
1561 vc->ci_fmt = *mf;
1562
1563 ff->fmt = ffmt;
1564
1565 /* Reset the crop rectangle if required. */
1566 if (!(fmt->pad == FIMC_SD_PAD_SOURCE && (ctx->state & FIMC_COMPOSE)))
1567 set_frame_crop(ff, 0, 0, mf->width, mf->height);
1568
1569 if (fmt->pad != FIMC_SD_PAD_SOURCE)
1570 ctx->state &= ~FIMC_COMPOSE;
1571
1572 mutex_unlock(&fimc->lock);
1573 return 0;
1574 }
1575
fimc_subdev_get_selection(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_selection * sel)1576 static int fimc_subdev_get_selection(struct v4l2_subdev *sd,
1577 struct v4l2_subdev_state *sd_state,
1578 struct v4l2_subdev_selection *sel)
1579 {
1580 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1581 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1582 struct fimc_frame *f = &ctx->s_frame;
1583 struct v4l2_rect *r = &sel->r;
1584 struct v4l2_rect *try_sel;
1585
1586 if (sel->pad == FIMC_SD_PAD_SOURCE)
1587 return -EINVAL;
1588
1589 mutex_lock(&fimc->lock);
1590
1591 switch (sel->target) {
1592 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1593 f = &ctx->d_frame;
1594 fallthrough;
1595 case V4L2_SEL_TGT_CROP_BOUNDS:
1596 r->width = f->o_width;
1597 r->height = f->o_height;
1598 r->left = 0;
1599 r->top = 0;
1600 mutex_unlock(&fimc->lock);
1601 return 0;
1602
1603 case V4L2_SEL_TGT_CROP:
1604 try_sel = v4l2_subdev_get_try_crop(sd, sd_state, sel->pad);
1605 break;
1606 case V4L2_SEL_TGT_COMPOSE:
1607 try_sel = v4l2_subdev_get_try_compose(sd, sd_state, sel->pad);
1608 f = &ctx->d_frame;
1609 break;
1610 default:
1611 mutex_unlock(&fimc->lock);
1612 return -EINVAL;
1613 }
1614
1615 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1616 sel->r = *try_sel;
1617 } else {
1618 r->left = f->offs_h;
1619 r->top = f->offs_v;
1620 r->width = f->width;
1621 r->height = f->height;
1622 }
1623
1624 dbg("target %#x: l:%d, t:%d, %dx%d, f_w: %d, f_h: %d",
1625 sel->pad, r->left, r->top, r->width, r->height,
1626 f->f_width, f->f_height);
1627
1628 mutex_unlock(&fimc->lock);
1629 return 0;
1630 }
1631
fimc_subdev_set_selection(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_selection * sel)1632 static int fimc_subdev_set_selection(struct v4l2_subdev *sd,
1633 struct v4l2_subdev_state *sd_state,
1634 struct v4l2_subdev_selection *sel)
1635 {
1636 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1637 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1638 struct fimc_frame *f = &ctx->s_frame;
1639 struct v4l2_rect *r = &sel->r;
1640 struct v4l2_rect *try_sel;
1641 unsigned long flags;
1642
1643 if (sel->pad == FIMC_SD_PAD_SOURCE)
1644 return -EINVAL;
1645
1646 mutex_lock(&fimc->lock);
1647 fimc_capture_try_selection(ctx, r, V4L2_SEL_TGT_CROP);
1648
1649 switch (sel->target) {
1650 case V4L2_SEL_TGT_CROP:
1651 try_sel = v4l2_subdev_get_try_crop(sd, sd_state, sel->pad);
1652 break;
1653 case V4L2_SEL_TGT_COMPOSE:
1654 try_sel = v4l2_subdev_get_try_compose(sd, sd_state, sel->pad);
1655 f = &ctx->d_frame;
1656 break;
1657 default:
1658 mutex_unlock(&fimc->lock);
1659 return -EINVAL;
1660 }
1661
1662 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1663 *try_sel = sel->r;
1664 } else {
1665 spin_lock_irqsave(&fimc->slock, flags);
1666 set_frame_crop(f, r->left, r->top, r->width, r->height);
1667 set_bit(ST_CAPT_APPLY_CFG, &fimc->state);
1668 if (sel->target == V4L2_SEL_TGT_COMPOSE)
1669 ctx->state |= FIMC_COMPOSE;
1670 spin_unlock_irqrestore(&fimc->slock, flags);
1671 }
1672
1673 dbg("target %#x: (%d,%d)/%dx%d", sel->target, r->left, r->top,
1674 r->width, r->height);
1675
1676 mutex_unlock(&fimc->lock);
1677 return 0;
1678 }
1679
1680 static const struct v4l2_subdev_pad_ops fimc_subdev_pad_ops = {
1681 .enum_mbus_code = fimc_subdev_enum_mbus_code,
1682 .get_selection = fimc_subdev_get_selection,
1683 .set_selection = fimc_subdev_set_selection,
1684 .get_fmt = fimc_subdev_get_fmt,
1685 .set_fmt = fimc_subdev_set_fmt,
1686 };
1687
1688 static const struct v4l2_subdev_ops fimc_subdev_ops = {
1689 .pad = &fimc_subdev_pad_ops,
1690 };
1691
1692 /* Set default format at the sensor and host interface */
fimc_capture_set_default_format(struct fimc_dev * fimc)1693 static int fimc_capture_set_default_format(struct fimc_dev *fimc)
1694 {
1695 struct v4l2_format fmt = {
1696 .type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
1697 .fmt.pix_mp = {
1698 .width = FIMC_DEFAULT_WIDTH,
1699 .height = FIMC_DEFAULT_HEIGHT,
1700 .pixelformat = V4L2_PIX_FMT_YUYV,
1701 .field = V4L2_FIELD_NONE,
1702 .colorspace = V4L2_COLORSPACE_JPEG,
1703 },
1704 };
1705
1706 return __fimc_capture_set_format(fimc, &fmt);
1707 }
1708
1709 /* fimc->lock must be already initialized */
fimc_register_capture_device(struct fimc_dev * fimc,struct v4l2_device * v4l2_dev)1710 static int fimc_register_capture_device(struct fimc_dev *fimc,
1711 struct v4l2_device *v4l2_dev)
1712 {
1713 struct video_device *vfd = &fimc->vid_cap.ve.vdev;
1714 struct vb2_queue *q = &fimc->vid_cap.vbq;
1715 struct fimc_ctx *ctx;
1716 struct fimc_vid_cap *vid_cap;
1717 struct fimc_fmt *fmt;
1718 int ret = -ENOMEM;
1719
1720 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
1721 if (!ctx)
1722 return -ENOMEM;
1723
1724 ctx->fimc_dev = fimc;
1725 ctx->in_path = FIMC_IO_CAMERA;
1726 ctx->out_path = FIMC_IO_DMA;
1727 ctx->state = FIMC_CTX_CAP;
1728 ctx->s_frame.fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, 0);
1729 ctx->d_frame.fmt = ctx->s_frame.fmt;
1730
1731 memset(vfd, 0, sizeof(*vfd));
1732 snprintf(vfd->name, sizeof(vfd->name), "fimc.%d.capture", fimc->id);
1733
1734 vfd->fops = &fimc_capture_fops;
1735 vfd->ioctl_ops = &fimc_capture_ioctl_ops;
1736 vfd->v4l2_dev = v4l2_dev;
1737 vfd->minor = -1;
1738 vfd->release = video_device_release_empty;
1739 vfd->queue = q;
1740 vfd->lock = &fimc->lock;
1741 vfd->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_CAPTURE_MPLANE;
1742
1743 video_set_drvdata(vfd, fimc);
1744 vid_cap = &fimc->vid_cap;
1745 vid_cap->active_buf_cnt = 0;
1746 vid_cap->reqbufs_count = 0;
1747 vid_cap->ctx = ctx;
1748
1749 INIT_LIST_HEAD(&vid_cap->pending_buf_q);
1750 INIT_LIST_HEAD(&vid_cap->active_buf_q);
1751
1752 memset(q, 0, sizeof(*q));
1753 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1754 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1755 q->drv_priv = ctx;
1756 q->ops = &fimc_capture_qops;
1757 q->mem_ops = &vb2_dma_contig_memops;
1758 q->buf_struct_size = sizeof(struct fimc_vid_buffer);
1759 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1760 q->lock = &fimc->lock;
1761 q->dev = &fimc->pdev->dev;
1762
1763 ret = vb2_queue_init(q);
1764 if (ret)
1765 goto err_free_ctx;
1766
1767 /* Default format configuration */
1768 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, 0);
1769 vid_cap->ci_fmt.width = FIMC_DEFAULT_WIDTH;
1770 vid_cap->ci_fmt.height = FIMC_DEFAULT_HEIGHT;
1771 vid_cap->ci_fmt.code = fmt->mbus_code;
1772
1773 ctx->s_frame.width = FIMC_DEFAULT_WIDTH;
1774 ctx->s_frame.height = FIMC_DEFAULT_HEIGHT;
1775 ctx->s_frame.fmt = fmt;
1776
1777 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_WRITEBACK, 0);
1778 vid_cap->wb_fmt = vid_cap->ci_fmt;
1779 vid_cap->wb_fmt.code = fmt->mbus_code;
1780
1781 vid_cap->vd_pad.flags = MEDIA_PAD_FL_SINK;
1782 vfd->entity.function = MEDIA_ENT_F_PROC_VIDEO_SCALER;
1783 ret = media_entity_pads_init(&vfd->entity, 1, &vid_cap->vd_pad);
1784 if (ret)
1785 goto err_free_ctx;
1786
1787 ret = fimc_ctrls_create(ctx);
1788 if (ret)
1789 goto err_me_cleanup;
1790
1791 ret = video_register_device(vfd, VFL_TYPE_VIDEO, -1);
1792 if (ret)
1793 goto err_ctrl_free;
1794
1795 v4l2_info(v4l2_dev, "Registered %s as /dev/%s\n",
1796 vfd->name, video_device_node_name(vfd));
1797
1798 vfd->ctrl_handler = &ctx->ctrls.handler;
1799 return 0;
1800
1801 err_ctrl_free:
1802 fimc_ctrls_delete(ctx);
1803 err_me_cleanup:
1804 media_entity_cleanup(&vfd->entity);
1805 err_free_ctx:
1806 kfree(ctx);
1807 return ret;
1808 }
1809
fimc_capture_subdev_registered(struct v4l2_subdev * sd)1810 static int fimc_capture_subdev_registered(struct v4l2_subdev *sd)
1811 {
1812 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1813 int ret;
1814
1815 if (fimc == NULL)
1816 return -ENXIO;
1817
1818 ret = fimc_register_m2m_device(fimc, sd->v4l2_dev);
1819 if (ret)
1820 return ret;
1821
1822 fimc->vid_cap.ve.pipe = v4l2_get_subdev_hostdata(sd);
1823
1824 ret = fimc_register_capture_device(fimc, sd->v4l2_dev);
1825 if (ret) {
1826 fimc_unregister_m2m_device(fimc);
1827 fimc->vid_cap.ve.pipe = NULL;
1828 }
1829
1830 return ret;
1831 }
1832
fimc_capture_subdev_unregistered(struct v4l2_subdev * sd)1833 static void fimc_capture_subdev_unregistered(struct v4l2_subdev *sd)
1834 {
1835 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1836 struct video_device *vdev;
1837
1838 if (fimc == NULL)
1839 return;
1840
1841 mutex_lock(&fimc->lock);
1842
1843 fimc_unregister_m2m_device(fimc);
1844 vdev = &fimc->vid_cap.ve.vdev;
1845
1846 if (video_is_registered(vdev)) {
1847 video_unregister_device(vdev);
1848 media_entity_cleanup(&vdev->entity);
1849 fimc_ctrls_delete(fimc->vid_cap.ctx);
1850 fimc->vid_cap.ve.pipe = NULL;
1851 }
1852 kfree(fimc->vid_cap.ctx);
1853 fimc->vid_cap.ctx = NULL;
1854
1855 mutex_unlock(&fimc->lock);
1856 }
1857
1858 static const struct v4l2_subdev_internal_ops fimc_capture_sd_internal_ops = {
1859 .registered = fimc_capture_subdev_registered,
1860 .unregistered = fimc_capture_subdev_unregistered,
1861 };
1862
fimc_initialize_capture_subdev(struct fimc_dev * fimc)1863 int fimc_initialize_capture_subdev(struct fimc_dev *fimc)
1864 {
1865 struct v4l2_subdev *sd = &fimc->vid_cap.subdev;
1866 int ret;
1867
1868 v4l2_subdev_init(sd, &fimc_subdev_ops);
1869 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1870 snprintf(sd->name, sizeof(sd->name), "FIMC.%d", fimc->id);
1871
1872 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK_CAM].flags = MEDIA_PAD_FL_SINK;
1873 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK_FIFO].flags = MEDIA_PAD_FL_SINK;
1874 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
1875 ret = media_entity_pads_init(&sd->entity, FIMC_SD_PADS_NUM,
1876 fimc->vid_cap.sd_pads);
1877 if (ret)
1878 return ret;
1879
1880 sd->entity.ops = &fimc_sd_media_ops;
1881 sd->entity.function = MEDIA_ENT_F_PROC_VIDEO_SCALER;
1882 sd->internal_ops = &fimc_capture_sd_internal_ops;
1883 v4l2_set_subdevdata(sd, fimc);
1884 return 0;
1885 }
1886
fimc_unregister_capture_subdev(struct fimc_dev * fimc)1887 void fimc_unregister_capture_subdev(struct fimc_dev *fimc)
1888 {
1889 struct v4l2_subdev *sd = &fimc->vid_cap.subdev;
1890
1891 v4l2_device_unregister_subdev(sd);
1892 media_entity_cleanup(&sd->entity);
1893 v4l2_set_subdevdata(sd, NULL);
1894 }
1895