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Merge remote-tracking branch 'linus/master' into staging/for_v3.5
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / media / video / s5p-fimc / fimc-capture.c
1 /*
2 * Samsung S5P/EXYNOS4 SoC series camera interface (camera capture) driver
3 *
4 * Copyright (C) 2010 - 2011 Samsung Electronics Co., Ltd.
5 * Author: Sylwester Nawrocki, <s.nawrocki@samsung.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11
12 #include <linux/module.h>
13 #include <linux/kernel.h>
14 #include <linux/types.h>
15 #include <linux/errno.h>
16 #include <linux/bug.h>
17 #include <linux/interrupt.h>
18 #include <linux/device.h>
19 #include <linux/pm_runtime.h>
20 #include <linux/list.h>
21 #include <linux/slab.h>
22
23 #include <linux/videodev2.h>
24 #include <media/v4l2-device.h>
25 #include <media/v4l2-ioctl.h>
26 #include <media/v4l2-mem2mem.h>
27 #include <media/videobuf2-core.h>
28 #include <media/videobuf2-dma-contig.h>
29
30 #include "fimc-mdevice.h"
31 #include "fimc-core.h"
32
33 static int fimc_init_capture(struct fimc_dev *fimc)
34 {
35 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
36 struct fimc_sensor_info *sensor;
37 unsigned long flags;
38 int ret = 0;
39
40 if (fimc->pipeline.sensor == NULL || ctx == NULL)
41 return -ENXIO;
42 if (ctx->s_frame.fmt == NULL)
43 return -EINVAL;
44
45 sensor = v4l2_get_subdev_hostdata(fimc->pipeline.sensor);
46
47 spin_lock_irqsave(&fimc->slock, flags);
48 fimc_prepare_dma_offset(ctx, &ctx->d_frame);
49 fimc_set_yuv_order(ctx);
50
51 fimc_hw_set_camera_polarity(fimc, sensor->pdata);
52 fimc_hw_set_camera_type(fimc, sensor->pdata);
53 fimc_hw_set_camera_source(fimc, sensor->pdata);
54 fimc_hw_set_camera_offset(fimc, &ctx->s_frame);
55
56 ret = fimc_set_scaler_info(ctx);
57 if (!ret) {
58 fimc_hw_set_input_path(ctx);
59 fimc_hw_set_prescaler(ctx);
60 fimc_hw_set_mainscaler(ctx);
61 fimc_hw_set_target_format(ctx);
62 fimc_hw_set_rotation(ctx);
63 fimc_hw_set_effect(ctx, false);
64 fimc_hw_set_output_path(ctx);
65 fimc_hw_set_out_dma(ctx);
66 if (fimc->variant->has_alpha)
67 fimc_hw_set_rgb_alpha(ctx);
68 clear_bit(ST_CAPT_APPLY_CFG, &fimc->state);
69 }
70 spin_unlock_irqrestore(&fimc->slock, flags);
71 return ret;
72 }
73
74 static int fimc_capture_state_cleanup(struct fimc_dev *fimc, bool suspend)
75 {
76 struct fimc_vid_cap *cap = &fimc->vid_cap;
77 struct fimc_vid_buffer *buf;
78 unsigned long flags;
79 bool streaming;
80
81 spin_lock_irqsave(&fimc->slock, flags);
82 streaming = fimc->state & (1 << ST_CAPT_ISP_STREAM);
83
84 fimc->state &= ~(1 << ST_CAPT_RUN | 1 << ST_CAPT_SHUT |
85 1 << ST_CAPT_STREAM | 1 << ST_CAPT_ISP_STREAM);
86 if (suspend)
87 fimc->state |= (1 << ST_CAPT_SUSPENDED);
88 else
89 fimc->state &= ~(1 << ST_CAPT_PEND | 1 << ST_CAPT_SUSPENDED);
90
91 /* Release unused buffers */
92 while (!suspend && !list_empty(&cap->pending_buf_q)) {
93 buf = fimc_pending_queue_pop(cap);
94 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
95 }
96 /* If suspending put unused buffers onto pending queue */
97 while (!list_empty(&cap->active_buf_q)) {
98 buf = fimc_active_queue_pop(cap);
99 if (suspend)
100 fimc_pending_queue_add(cap, buf);
101 else
102 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
103 }
104
105 fimc_hw_reset(fimc);
106 cap->buf_index = 0;
107
108 spin_unlock_irqrestore(&fimc->slock, flags);
109
110 if (streaming)
111 return fimc_pipeline_s_stream(fimc, 0);
112 else
113 return 0;
114 }
115
116 static int fimc_stop_capture(struct fimc_dev *fimc, bool suspend)
117 {
118 unsigned long flags;
119
120 if (!fimc_capture_active(fimc))
121 return 0;
122
123 spin_lock_irqsave(&fimc->slock, flags);
124 set_bit(ST_CAPT_SHUT, &fimc->state);
125 fimc_deactivate_capture(fimc);
126 spin_unlock_irqrestore(&fimc->slock, flags);
127
128 wait_event_timeout(fimc->irq_queue,
129 !test_bit(ST_CAPT_SHUT, &fimc->state),
130 (2*HZ/10)); /* 200 ms */
131
132 return fimc_capture_state_cleanup(fimc, suspend);
133 }
134
135 /**
136 * fimc_capture_config_update - apply the camera interface configuration
137 *
138 * To be called from within the interrupt handler with fimc.slock
139 * spinlock held. It updates the camera pixel crop, rotation and
140 * image flip in H/W.
141 */
142 int fimc_capture_config_update(struct fimc_ctx *ctx)
143 {
144 struct fimc_dev *fimc = ctx->fimc_dev;
145 int ret;
146
147 if (!test_bit(ST_CAPT_APPLY_CFG, &fimc->state))
148 return 0;
149
150 fimc_hw_set_camera_offset(fimc, &ctx->s_frame);
151
152 ret = fimc_set_scaler_info(ctx);
153 if (ret)
154 return ret;
155
156 fimc_hw_set_prescaler(ctx);
157 fimc_hw_set_mainscaler(ctx);
158 fimc_hw_set_target_format(ctx);
159 fimc_hw_set_rotation(ctx);
160 fimc_prepare_dma_offset(ctx, &ctx->d_frame);
161 fimc_hw_set_out_dma(ctx);
162 if (fimc->variant->has_alpha)
163 fimc_hw_set_rgb_alpha(ctx);
164
165 clear_bit(ST_CAPT_APPLY_CFG, &fimc->state);
166 return ret;
167 }
168
169 static int start_streaming(struct vb2_queue *q, unsigned int count)
170 {
171 struct fimc_ctx *ctx = q->drv_priv;
172 struct fimc_dev *fimc = ctx->fimc_dev;
173 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
174 int min_bufs;
175 int ret;
176
177 vid_cap->frame_count = 0;
178
179 ret = fimc_init_capture(fimc);
180 if (ret)
181 goto error;
182
183 set_bit(ST_CAPT_PEND, &fimc->state);
184
185 min_bufs = fimc->vid_cap.reqbufs_count > 1 ? 2 : 1;
186
187 if (vid_cap->active_buf_cnt >= min_bufs &&
188 !test_and_set_bit(ST_CAPT_STREAM, &fimc->state)) {
189 fimc_activate_capture(ctx);
190
191 if (!test_and_set_bit(ST_CAPT_ISP_STREAM, &fimc->state))
192 fimc_pipeline_s_stream(fimc, 1);
193 }
194
195 return 0;
196 error:
197 fimc_capture_state_cleanup(fimc, false);
198 return ret;
199 }
200
201 static int stop_streaming(struct vb2_queue *q)
202 {
203 struct fimc_ctx *ctx = q->drv_priv;
204 struct fimc_dev *fimc = ctx->fimc_dev;
205
206 if (!fimc_capture_active(fimc))
207 return -EINVAL;
208
209 return fimc_stop_capture(fimc, false);
210 }
211
212 int fimc_capture_suspend(struct fimc_dev *fimc)
213 {
214 bool suspend = fimc_capture_busy(fimc);
215
216 int ret = fimc_stop_capture(fimc, suspend);
217 if (ret)
218 return ret;
219 return fimc_pipeline_shutdown(fimc);
220 }
221
222 static void buffer_queue(struct vb2_buffer *vb);
223
224 int fimc_capture_resume(struct fimc_dev *fimc)
225 {
226 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
227 struct fimc_vid_buffer *buf;
228 int i;
229
230 if (!test_and_clear_bit(ST_CAPT_SUSPENDED, &fimc->state))
231 return 0;
232
233 INIT_LIST_HEAD(&fimc->vid_cap.active_buf_q);
234 vid_cap->buf_index = 0;
235 fimc_pipeline_initialize(fimc, &fimc->vid_cap.vfd->entity,
236 false);
237 fimc_init_capture(fimc);
238
239 clear_bit(ST_CAPT_SUSPENDED, &fimc->state);
240
241 for (i = 0; i < vid_cap->reqbufs_count; i++) {
242 if (list_empty(&vid_cap->pending_buf_q))
243 break;
244 buf = fimc_pending_queue_pop(vid_cap);
245 buffer_queue(&buf->vb);
246 }
247 return 0;
248
249 }
250
251 static int queue_setup(struct vb2_queue *vq, const struct v4l2_format *pfmt,
252 unsigned int *num_buffers, unsigned int *num_planes,
253 unsigned int sizes[], void *allocators[])
254 {
255 const struct v4l2_pix_format_mplane *pixm = NULL;
256 struct fimc_ctx *ctx = vq->drv_priv;
257 struct fimc_frame *frame = &ctx->d_frame;
258 struct fimc_fmt *fmt = frame->fmt;
259 unsigned long wh;
260 int i;
261
262 if (pfmt) {
263 pixm = &pfmt->fmt.pix_mp;
264 fmt = fimc_find_format(&pixm->pixelformat, NULL,
265 FMT_FLAGS_CAM | FMT_FLAGS_M2M, -1);
266 wh = pixm->width * pixm->height;
267 } else {
268 wh = frame->f_width * frame->f_height;
269 }
270
271 if (fmt == NULL)
272 return -EINVAL;
273
274 *num_planes = fmt->memplanes;
275
276 for (i = 0; i < fmt->memplanes; i++) {
277 unsigned int size = (wh * fmt->depth[i]) / 8;
278 if (pixm)
279 sizes[i] = max(size, pixm->plane_fmt[i].sizeimage);
280 else
281 sizes[i] = size;
282 allocators[i] = ctx->fimc_dev->alloc_ctx;
283 }
284
285 return 0;
286 }
287
288 static int buffer_prepare(struct vb2_buffer *vb)
289 {
290 struct vb2_queue *vq = vb->vb2_queue;
291 struct fimc_ctx *ctx = vq->drv_priv;
292 int i;
293
294 if (ctx->d_frame.fmt == NULL)
295 return -EINVAL;
296
297 for (i = 0; i < ctx->d_frame.fmt->memplanes; i++) {
298 unsigned long size = ctx->d_frame.payload[i];
299
300 if (vb2_plane_size(vb, i) < size) {
301 v4l2_err(ctx->fimc_dev->vid_cap.vfd,
302 "User buffer too small (%ld < %ld)\n",
303 vb2_plane_size(vb, i), size);
304 return -EINVAL;
305 }
306 vb2_set_plane_payload(vb, i, size);
307 }
308
309 return 0;
310 }
311
312 static void buffer_queue(struct vb2_buffer *vb)
313 {
314 struct fimc_vid_buffer *buf
315 = container_of(vb, struct fimc_vid_buffer, vb);
316 struct fimc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
317 struct fimc_dev *fimc = ctx->fimc_dev;
318 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
319 unsigned long flags;
320 int min_bufs;
321
322 spin_lock_irqsave(&fimc->slock, flags);
323 fimc_prepare_addr(ctx, &buf->vb, &ctx->d_frame, &buf->paddr);
324
325 if (!test_bit(ST_CAPT_SUSPENDED, &fimc->state) &&
326 !test_bit(ST_CAPT_STREAM, &fimc->state) &&
327 vid_cap->active_buf_cnt < FIMC_MAX_OUT_BUFS) {
328 /* Setup the buffer directly for processing. */
329 int buf_id = (vid_cap->reqbufs_count == 1) ? -1 :
330 vid_cap->buf_index;
331
332 fimc_hw_set_output_addr(fimc, &buf->paddr, buf_id);
333 buf->index = vid_cap->buf_index;
334 fimc_active_queue_add(vid_cap, buf);
335
336 if (++vid_cap->buf_index >= FIMC_MAX_OUT_BUFS)
337 vid_cap->buf_index = 0;
338 } else {
339 fimc_pending_queue_add(vid_cap, buf);
340 }
341
342 min_bufs = vid_cap->reqbufs_count > 1 ? 2 : 1;
343
344
345 if (vb2_is_streaming(&vid_cap->vbq) &&
346 vid_cap->active_buf_cnt >= min_bufs &&
347 !test_and_set_bit(ST_CAPT_STREAM, &fimc->state)) {
348 fimc_activate_capture(ctx);
349 spin_unlock_irqrestore(&fimc->slock, flags);
350
351 if (!test_and_set_bit(ST_CAPT_ISP_STREAM, &fimc->state))
352 fimc_pipeline_s_stream(fimc, 1);
353 return;
354 }
355 spin_unlock_irqrestore(&fimc->slock, flags);
356 }
357
358 static void fimc_lock(struct vb2_queue *vq)
359 {
360 struct fimc_ctx *ctx = vb2_get_drv_priv(vq);
361 mutex_lock(&ctx->fimc_dev->lock);
362 }
363
364 static void fimc_unlock(struct vb2_queue *vq)
365 {
366 struct fimc_ctx *ctx = vb2_get_drv_priv(vq);
367 mutex_unlock(&ctx->fimc_dev->lock);
368 }
369
370 static struct vb2_ops fimc_capture_qops = {
371 .queue_setup = queue_setup,
372 .buf_prepare = buffer_prepare,
373 .buf_queue = buffer_queue,
374 .wait_prepare = fimc_unlock,
375 .wait_finish = fimc_lock,
376 .start_streaming = start_streaming,
377 .stop_streaming = stop_streaming,
378 };
379
380 /**
381 * fimc_capture_ctrls_create - initialize the control handler
382 * Initialize the capture video node control handler and fill it
383 * with the FIMC controls. Inherit any sensor's controls if the
384 * 'user_subdev_api' flag is false (default behaviour).
385 * This function need to be called with the graph mutex held.
386 */
387 int fimc_capture_ctrls_create(struct fimc_dev *fimc)
388 {
389 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
390 int ret;
391
392 if (WARN_ON(vid_cap->ctx == NULL))
393 return -ENXIO;
394 if (vid_cap->ctx->ctrls_rdy)
395 return 0;
396
397 ret = fimc_ctrls_create(vid_cap->ctx);
398 if (ret || vid_cap->user_subdev_api)
399 return ret;
400
401 return v4l2_ctrl_add_handler(&vid_cap->ctx->ctrl_handler,
402 fimc->pipeline.sensor->ctrl_handler);
403 }
404
405 static int fimc_capture_set_default_format(struct fimc_dev *fimc);
406
407 static int fimc_capture_open(struct file *file)
408 {
409 struct fimc_dev *fimc = video_drvdata(file);
410 int ret = v4l2_fh_open(file);
411
412 if (ret)
413 return ret;
414
415 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
416
417 /* Return if the corresponding video mem2mem node is already opened. */
418 if (fimc_m2m_active(fimc))
419 return -EBUSY;
420
421 set_bit(ST_CAPT_BUSY, &fimc->state);
422 pm_runtime_get_sync(&fimc->pdev->dev);
423
424 if (++fimc->vid_cap.refcnt == 1) {
425 ret = fimc_pipeline_initialize(fimc,
426 &fimc->vid_cap.vfd->entity, true);
427 if (ret < 0) {
428 dev_err(&fimc->pdev->dev,
429 "Video pipeline initialization failed\n");
430 pm_runtime_put_sync(&fimc->pdev->dev);
431 fimc->vid_cap.refcnt--;
432 v4l2_fh_release(file);
433 clear_bit(ST_CAPT_BUSY, &fimc->state);
434 return ret;
435 }
436 ret = fimc_capture_ctrls_create(fimc);
437
438 if (!ret && !fimc->vid_cap.user_subdev_api)
439 ret = fimc_capture_set_default_format(fimc);
440 }
441 return ret;
442 }
443
444 static int fimc_capture_close(struct file *file)
445 {
446 struct fimc_dev *fimc = video_drvdata(file);
447
448 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
449
450 if (--fimc->vid_cap.refcnt == 0) {
451 clear_bit(ST_CAPT_BUSY, &fimc->state);
452 fimc_stop_capture(fimc, false);
453 fimc_pipeline_shutdown(fimc);
454 clear_bit(ST_CAPT_SUSPENDED, &fimc->state);
455 }
456
457 pm_runtime_put(&fimc->pdev->dev);
458
459 if (fimc->vid_cap.refcnt == 0) {
460 vb2_queue_release(&fimc->vid_cap.vbq);
461 fimc_ctrls_delete(fimc->vid_cap.ctx);
462 }
463 return v4l2_fh_release(file);
464 }
465
466 static unsigned int fimc_capture_poll(struct file *file,
467 struct poll_table_struct *wait)
468 {
469 struct fimc_dev *fimc = video_drvdata(file);
470
471 return vb2_poll(&fimc->vid_cap.vbq, file, wait);
472 }
473
474 static int fimc_capture_mmap(struct file *file, struct vm_area_struct *vma)
475 {
476 struct fimc_dev *fimc = video_drvdata(file);
477
478 return vb2_mmap(&fimc->vid_cap.vbq, vma);
479 }
480
481 static const struct v4l2_file_operations fimc_capture_fops = {
482 .owner = THIS_MODULE,
483 .open = fimc_capture_open,
484 .release = fimc_capture_close,
485 .poll = fimc_capture_poll,
486 .unlocked_ioctl = video_ioctl2,
487 .mmap = fimc_capture_mmap,
488 };
489
490 /*
491 * Format and crop negotiation helpers
492 */
493
494 static struct fimc_fmt *fimc_capture_try_format(struct fimc_ctx *ctx,
495 u32 *width, u32 *height,
496 u32 *code, u32 *fourcc, int pad)
497 {
498 bool rotation = ctx->rotation == 90 || ctx->rotation == 270;
499 struct fimc_dev *fimc = ctx->fimc_dev;
500 struct samsung_fimc_variant *var = fimc->variant;
501 struct fimc_pix_limit *pl = var->pix_limit;
502 struct fimc_frame *dst = &ctx->d_frame;
503 u32 depth, min_w, max_w, min_h, align_h = 3;
504 u32 mask = FMT_FLAGS_CAM;
505 struct fimc_fmt *ffmt;
506
507 /* Color conversion from/to JPEG is not supported */
508 if (code && ctx->s_frame.fmt && pad == FIMC_SD_PAD_SOURCE &&
509 fimc_fmt_is_jpeg(ctx->s_frame.fmt->color))
510 *code = V4L2_MBUS_FMT_JPEG_1X8;
511
512 if (fourcc && *fourcc != V4L2_PIX_FMT_JPEG && pad != FIMC_SD_PAD_SINK)
513 mask |= FMT_FLAGS_M2M;
514
515 ffmt = fimc_find_format(fourcc, code, mask, 0);
516 if (WARN_ON(!ffmt))
517 return NULL;
518 if (code)
519 *code = ffmt->mbus_code;
520 if (fourcc)
521 *fourcc = ffmt->fourcc;
522
523 if (pad == FIMC_SD_PAD_SINK) {
524 max_w = fimc_fmt_is_jpeg(ffmt->color) ?
525 pl->scaler_dis_w : pl->scaler_en_w;
526 /* Apply the camera input interface pixel constraints */
527 v4l_bound_align_image(width, max_t(u32, *width, 32), max_w, 4,
528 height, max_t(u32, *height, 32),
529 FIMC_CAMIF_MAX_HEIGHT,
530 fimc_fmt_is_jpeg(ffmt->color) ? 3 : 1,
531 0);
532 return ffmt;
533 }
534 /* Can't scale or crop in transparent (JPEG) transfer mode */
535 if (fimc_fmt_is_jpeg(ffmt->color)) {
536 *width = ctx->s_frame.f_width;
537 *height = ctx->s_frame.f_height;
538 return ffmt;
539 }
540 /* Apply the scaler and the output DMA constraints */
541 max_w = rotation ? pl->out_rot_en_w : pl->out_rot_dis_w;
542 min_w = ctx->state & FIMC_DST_CROP ? dst->width : var->min_out_pixsize;
543 min_h = ctx->state & FIMC_DST_CROP ? dst->height : var->min_out_pixsize;
544 if (var->min_vsize_align == 1 && !rotation)
545 align_h = fimc_fmt_is_rgb(ffmt->color) ? 0 : 1;
546
547 depth = fimc_get_format_depth(ffmt);
548 v4l_bound_align_image(width, min_w, max_w,
549 ffs(var->min_out_pixsize) - 1,
550 height, min_h, FIMC_CAMIF_MAX_HEIGHT,
551 align_h,
552 64/(ALIGN(depth, 8)));
553
554 dbg("pad%d: code: 0x%x, %dx%d. dst fmt: %dx%d",
555 pad, code ? *code : 0, *width, *height,
556 dst->f_width, dst->f_height);
557
558 return ffmt;
559 }
560
561 static void fimc_capture_try_crop(struct fimc_ctx *ctx, struct v4l2_rect *r,
562 int pad)
563 {
564 bool rotate = ctx->rotation == 90 || ctx->rotation == 270;
565 struct fimc_dev *fimc = ctx->fimc_dev;
566 struct samsung_fimc_variant *var = fimc->variant;
567 struct fimc_pix_limit *pl = var->pix_limit;
568 struct fimc_frame *sink = &ctx->s_frame;
569 u32 max_w, max_h, min_w = 0, min_h = 0, min_sz;
570 u32 align_sz = 0, align_h = 4;
571 u32 max_sc_h, max_sc_v;
572
573 /* In JPEG transparent transfer mode cropping is not supported */
574 if (fimc_fmt_is_jpeg(ctx->d_frame.fmt->color)) {
575 r->width = sink->f_width;
576 r->height = sink->f_height;
577 r->left = r->top = 0;
578 return;
579 }
580 if (pad == FIMC_SD_PAD_SOURCE) {
581 if (ctx->rotation != 90 && ctx->rotation != 270)
582 align_h = 1;
583 max_sc_h = min(SCALER_MAX_HRATIO, 1 << (ffs(sink->width) - 3));
584 max_sc_v = min(SCALER_MAX_VRATIO, 1 << (ffs(sink->height) - 1));
585 min_sz = var->min_out_pixsize;
586 } else {
587 u32 depth = fimc_get_format_depth(sink->fmt);
588 align_sz = 64/ALIGN(depth, 8);
589 min_sz = var->min_inp_pixsize;
590 min_w = min_h = min_sz;
591 max_sc_h = max_sc_v = 1;
592 }
593 /*
594 * For the crop rectangle at source pad the following constraints
595 * must be met:
596 * - it must fit in the sink pad format rectangle (f_width/f_height);
597 * - maximum downscaling ratio is 64;
598 * - maximum crop size depends if the rotator is used or not;
599 * - the sink pad format width/height must be 4 multiple of the
600 * prescaler ratios determined by sink pad size and source pad crop,
601 * the prescaler ratio is returned by fimc_get_scaler_factor().
602 */
603 max_w = min_t(u32,
604 rotate ? pl->out_rot_en_w : pl->out_rot_dis_w,
605 rotate ? sink->f_height : sink->f_width);
606 max_h = min_t(u32, FIMC_CAMIF_MAX_HEIGHT, sink->f_height);
607 if (pad == FIMC_SD_PAD_SOURCE) {
608 min_w = min_t(u32, max_w, sink->f_width / max_sc_h);
609 min_h = min_t(u32, max_h, sink->f_height / max_sc_v);
610 if (rotate) {
611 swap(max_sc_h, max_sc_v);
612 swap(min_w, min_h);
613 }
614 }
615 v4l_bound_align_image(&r->width, min_w, max_w, ffs(min_sz) - 1,
616 &r->height, min_h, max_h, align_h,
617 align_sz);
618 /* Adjust left/top if cropping rectangle is out of bounds */
619 r->left = clamp_t(u32, r->left, 0, sink->f_width - r->width);
620 r->top = clamp_t(u32, r->top, 0, sink->f_height - r->height);
621 r->left = round_down(r->left, var->hor_offs_align);
622
623 dbg("pad%d: (%d,%d)/%dx%d, sink fmt: %dx%d",
624 pad, r->left, r->top, r->width, r->height,
625 sink->f_width, sink->f_height);
626 }
627
628 /*
629 * The video node ioctl operations
630 */
631 static int fimc_vidioc_querycap_capture(struct file *file, void *priv,
632 struct v4l2_capability *cap)
633 {
634 struct fimc_dev *fimc = video_drvdata(file);
635
636 strncpy(cap->driver, fimc->pdev->name, sizeof(cap->driver) - 1);
637 strncpy(cap->card, fimc->pdev->name, sizeof(cap->card) - 1);
638 cap->bus_info[0] = 0;
639 cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_CAPTURE_MPLANE;
640
641 return 0;
642 }
643
644 static int fimc_cap_enum_fmt_mplane(struct file *file, void *priv,
645 struct v4l2_fmtdesc *f)
646 {
647 struct fimc_fmt *fmt;
648
649 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM | FMT_FLAGS_M2M,
650 f->index);
651 if (!fmt)
652 return -EINVAL;
653 strncpy(f->description, fmt->name, sizeof(f->description) - 1);
654 f->pixelformat = fmt->fourcc;
655 if (fmt->fourcc == V4L2_MBUS_FMT_JPEG_1X8)
656 f->flags |= V4L2_FMT_FLAG_COMPRESSED;
657 return 0;
658 }
659
660 /**
661 * fimc_pipeline_try_format - negotiate and/or set formats at pipeline
662 * elements
663 * @ctx: FIMC capture context
664 * @tfmt: media bus format to try/set on subdevs
665 * @fmt_id: fimc pixel format id corresponding to returned @tfmt (output)
666 * @set: true to set format on subdevs, false to try only
667 */
668 static int fimc_pipeline_try_format(struct fimc_ctx *ctx,
669 struct v4l2_mbus_framefmt *tfmt,
670 struct fimc_fmt **fmt_id,
671 bool set)
672 {
673 struct fimc_dev *fimc = ctx->fimc_dev;
674 struct v4l2_subdev *sd = fimc->pipeline.sensor;
675 struct v4l2_subdev *csis = fimc->pipeline.csis;
676 struct v4l2_subdev_format sfmt;
677 struct v4l2_mbus_framefmt *mf = &sfmt.format;
678 struct fimc_fmt *ffmt = NULL;
679 int ret, i = 0;
680
681 if (WARN_ON(!sd || !tfmt))
682 return -EINVAL;
683
684 memset(&sfmt, 0, sizeof(sfmt));
685 sfmt.format = *tfmt;
686
687 sfmt.which = set ? V4L2_SUBDEV_FORMAT_ACTIVE : V4L2_SUBDEV_FORMAT_TRY;
688 while (1) {
689 ffmt = fimc_find_format(NULL, mf->code != 0 ? &mf->code : NULL,
690 FMT_FLAGS_CAM, i++);
691 if (ffmt == NULL) {
692 /*
693 * Notify user-space if common pixel code for
694 * host and sensor does not exist.
695 */
696 return -EINVAL;
697 }
698 mf->code = tfmt->code = ffmt->mbus_code;
699
700 ret = v4l2_subdev_call(sd, pad, set_fmt, NULL, &sfmt);
701 if (ret)
702 return ret;
703 if (mf->code != tfmt->code) {
704 mf->code = 0;
705 continue;
706 }
707 if (mf->width != tfmt->width || mf->height != tfmt->height) {
708 u32 fcc = ffmt->fourcc;
709 tfmt->width = mf->width;
710 tfmt->height = mf->height;
711 ffmt = fimc_capture_try_format(ctx,
712 &tfmt->width, &tfmt->height,
713 NULL, &fcc, FIMC_SD_PAD_SOURCE);
714 if (ffmt && ffmt->mbus_code)
715 mf->code = ffmt->mbus_code;
716 if (mf->width != tfmt->width ||
717 mf->height != tfmt->height)
718 continue;
719 tfmt->code = mf->code;
720 }
721 if (csis)
722 ret = v4l2_subdev_call(csis, pad, set_fmt, NULL, &sfmt);
723
724 if (mf->code == tfmt->code &&
725 mf->width == tfmt->width && mf->height == tfmt->height)
726 break;
727 }
728
729 if (fmt_id && ffmt)
730 *fmt_id = ffmt;
731 *tfmt = *mf;
732
733 dbg("code: 0x%x, %dx%d, %p", mf->code, mf->width, mf->height, ffmt);
734 return 0;
735 }
736
737 static int fimc_cap_g_fmt_mplane(struct file *file, void *fh,
738 struct v4l2_format *f)
739 {
740 struct fimc_dev *fimc = video_drvdata(file);
741 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
742
743 if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
744 return -EINVAL;
745
746 return fimc_fill_format(&ctx->d_frame, f);
747 }
748
749 static int fimc_cap_try_fmt_mplane(struct file *file, void *fh,
750 struct v4l2_format *f)
751 {
752 struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
753 struct fimc_dev *fimc = video_drvdata(file);
754 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
755 struct v4l2_mbus_framefmt mf;
756 struct fimc_fmt *ffmt = NULL;
757
758 if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
759 return -EINVAL;
760
761 if (pix->pixelformat == V4L2_PIX_FMT_JPEG) {
762 fimc_capture_try_format(ctx, &pix->width, &pix->height,
763 NULL, &pix->pixelformat,
764 FIMC_SD_PAD_SINK);
765 ctx->s_frame.f_width = pix->width;
766 ctx->s_frame.f_height = pix->height;
767 }
768 ffmt = fimc_capture_try_format(ctx, &pix->width, &pix->height,
769 NULL, &pix->pixelformat,
770 FIMC_SD_PAD_SOURCE);
771 if (!ffmt)
772 return -EINVAL;
773
774 if (!fimc->vid_cap.user_subdev_api) {
775 mf.width = pix->width;
776 mf.height = pix->height;
777 mf.code = ffmt->mbus_code;
778 fimc_md_graph_lock(fimc);
779 fimc_pipeline_try_format(ctx, &mf, &ffmt, false);
780 fimc_md_graph_unlock(fimc);
781
782 pix->width = mf.width;
783 pix->height = mf.height;
784 if (ffmt)
785 pix->pixelformat = ffmt->fourcc;
786 }
787
788 fimc_adjust_mplane_format(ffmt, pix->width, pix->height, pix);
789 return 0;
790 }
791
792 static void fimc_capture_mark_jpeg_xfer(struct fimc_ctx *ctx, bool jpeg)
793 {
794 ctx->scaler.enabled = !jpeg;
795 fimc_ctrls_activate(ctx, !jpeg);
796
797 if (jpeg)
798 set_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state);
799 else
800 clear_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state);
801 }
802
803 static int fimc_capture_set_format(struct fimc_dev *fimc, struct v4l2_format *f)
804 {
805 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
806 struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
807 struct v4l2_mbus_framefmt *mf = &fimc->vid_cap.mf;
808 struct fimc_frame *ff = &ctx->d_frame;
809 struct fimc_fmt *s_fmt = NULL;
810 int ret, i;
811
812 if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
813 return -EINVAL;
814 if (vb2_is_busy(&fimc->vid_cap.vbq))
815 return -EBUSY;
816
817 /* Pre-configure format at camera interface input, for JPEG only */
818 if (pix->pixelformat == V4L2_PIX_FMT_JPEG) {
819 fimc_capture_try_format(ctx, &pix->width, &pix->height,
820 NULL, &pix->pixelformat,
821 FIMC_SD_PAD_SINK);
822 ctx->s_frame.f_width = pix->width;
823 ctx->s_frame.f_height = pix->height;
824 }
825 /* Try the format at the scaler and the DMA output */
826 ff->fmt = fimc_capture_try_format(ctx, &pix->width, &pix->height,
827 NULL, &pix->pixelformat,
828 FIMC_SD_PAD_SOURCE);
829 if (!ff->fmt)
830 return -EINVAL;
831
832 /* Update RGB Alpha control state and value range */
833 fimc_alpha_ctrl_update(ctx);
834
835 /* Try to match format at the host and the sensor */
836 if (!fimc->vid_cap.user_subdev_api) {
837 mf->code = ff->fmt->mbus_code;
838 mf->width = pix->width;
839 mf->height = pix->height;
840
841 fimc_md_graph_lock(fimc);
842 ret = fimc_pipeline_try_format(ctx, mf, &s_fmt, true);
843 fimc_md_graph_unlock(fimc);
844 if (ret)
845 return ret;
846 pix->width = mf->width;
847 pix->height = mf->height;
848 }
849 fimc_adjust_mplane_format(ff->fmt, pix->width, pix->height, pix);
850 for (i = 0; i < ff->fmt->colplanes; i++)
851 ff->payload[i] =
852 (pix->width * pix->height * ff->fmt->depth[i]) / 8;
853
854 set_frame_bounds(ff, pix->width, pix->height);
855 /* Reset the composition rectangle if not yet configured */
856 if (!(ctx->state & FIMC_DST_CROP))
857 set_frame_crop(ff, 0, 0, pix->width, pix->height);
858
859 fimc_capture_mark_jpeg_xfer(ctx, fimc_fmt_is_jpeg(ff->fmt->color));
860
861 /* Reset cropping and set format at the camera interface input */
862 if (!fimc->vid_cap.user_subdev_api) {
863 ctx->s_frame.fmt = s_fmt;
864 set_frame_bounds(&ctx->s_frame, pix->width, pix->height);
865 set_frame_crop(&ctx->s_frame, 0, 0, pix->width, pix->height);
866 }
867
868 return ret;
869 }
870
871 static int fimc_cap_s_fmt_mplane(struct file *file, void *priv,
872 struct v4l2_format *f)
873 {
874 struct fimc_dev *fimc = video_drvdata(file);
875
876 return fimc_capture_set_format(fimc, f);
877 }
878
879 static int fimc_cap_enum_input(struct file *file, void *priv,
880 struct v4l2_input *i)
881 {
882 struct fimc_dev *fimc = video_drvdata(file);
883 struct v4l2_subdev *sd = fimc->pipeline.sensor;
884
885 if (i->index != 0)
886 return -EINVAL;
887
888 i->type = V4L2_INPUT_TYPE_CAMERA;
889 if (sd)
890 strlcpy(i->name, sd->name, sizeof(i->name));
891 return 0;
892 }
893
894 static int fimc_cap_s_input(struct file *file, void *priv, unsigned int i)
895 {
896 return i == 0 ? i : -EINVAL;
897 }
898
899 static int fimc_cap_g_input(struct file *file, void *priv, unsigned int *i)
900 {
901 *i = 0;
902 return 0;
903 }
904
905 /**
906 * fimc_pipeline_validate - check for formats inconsistencies
907 * between source and sink pad of each link
908 *
909 * Return 0 if all formats match or -EPIPE otherwise.
910 */
911 static int fimc_pipeline_validate(struct fimc_dev *fimc)
912 {
913 struct v4l2_subdev_format sink_fmt, src_fmt;
914 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
915 struct v4l2_subdev *sd;
916 struct media_pad *pad;
917 int ret;
918
919 /* Start with the video capture node pad */
920 pad = media_entity_remote_source(&vid_cap->vd_pad);
921 if (pad == NULL)
922 return -EPIPE;
923 /* FIMC.{N} subdevice */
924 sd = media_entity_to_v4l2_subdev(pad->entity);
925
926 while (1) {
927 /* Retrieve format at the sink pad */
928 pad = &sd->entity.pads[0];
929 if (!(pad->flags & MEDIA_PAD_FL_SINK))
930 break;
931 /* Don't call FIMC subdev operation to avoid nested locking */
932 if (sd == fimc->vid_cap.subdev) {
933 struct fimc_frame *ff = &vid_cap->ctx->s_frame;
934 sink_fmt.format.width = ff->f_width;
935 sink_fmt.format.height = ff->f_height;
936 sink_fmt.format.code = ff->fmt ? ff->fmt->mbus_code : 0;
937 } else {
938 sink_fmt.pad = pad->index;
939 sink_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
940 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &sink_fmt);
941 if (ret < 0 && ret != -ENOIOCTLCMD)
942 return -EPIPE;
943 }
944 /* Retrieve format at the source pad */
945 pad = media_entity_remote_source(pad);
946 if (pad == NULL ||
947 media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
948 break;
949
950 sd = media_entity_to_v4l2_subdev(pad->entity);
951 src_fmt.pad = pad->index;
952 src_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
953 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &src_fmt);
954 if (ret < 0 && ret != -ENOIOCTLCMD)
955 return -EPIPE;
956
957 if (src_fmt.format.width != sink_fmt.format.width ||
958 src_fmt.format.height != sink_fmt.format.height ||
959 src_fmt.format.code != sink_fmt.format.code)
960 return -EPIPE;
961 }
962 return 0;
963 }
964
965 static int fimc_cap_streamon(struct file *file, void *priv,
966 enum v4l2_buf_type type)
967 {
968 struct fimc_dev *fimc = video_drvdata(file);
969 struct fimc_pipeline *p = &fimc->pipeline;
970 int ret;
971
972 if (fimc_capture_active(fimc))
973 return -EBUSY;
974
975 media_entity_pipeline_start(&p->sensor->entity, p->pipe);
976
977 if (fimc->vid_cap.user_subdev_api) {
978 ret = fimc_pipeline_validate(fimc);
979 if (ret)
980 return ret;
981 }
982 return vb2_streamon(&fimc->vid_cap.vbq, type);
983 }
984
985 static int fimc_cap_streamoff(struct file *file, void *priv,
986 enum v4l2_buf_type type)
987 {
988 struct fimc_dev *fimc = video_drvdata(file);
989 struct v4l2_subdev *sd = fimc->pipeline.sensor;
990 int ret;
991
992 ret = vb2_streamoff(&fimc->vid_cap.vbq, type);
993 if (ret == 0)
994 media_entity_pipeline_stop(&sd->entity);
995 return ret;
996 }
997
998 static int fimc_cap_reqbufs(struct file *file, void *priv,
999 struct v4l2_requestbuffers *reqbufs)
1000 {
1001 struct fimc_dev *fimc = video_drvdata(file);
1002 int ret = vb2_reqbufs(&fimc->vid_cap.vbq, reqbufs);
1003
1004 if (!ret)
1005 fimc->vid_cap.reqbufs_count = reqbufs->count;
1006 return ret;
1007 }
1008
1009 static int fimc_cap_querybuf(struct file *file, void *priv,
1010 struct v4l2_buffer *buf)
1011 {
1012 struct fimc_dev *fimc = video_drvdata(file);
1013
1014 return vb2_querybuf(&fimc->vid_cap.vbq, buf);
1015 }
1016
1017 static int fimc_cap_qbuf(struct file *file, void *priv,
1018 struct v4l2_buffer *buf)
1019 {
1020 struct fimc_dev *fimc = video_drvdata(file);
1021
1022 return vb2_qbuf(&fimc->vid_cap.vbq, buf);
1023 }
1024
1025 static int fimc_cap_dqbuf(struct file *file, void *priv,
1026 struct v4l2_buffer *buf)
1027 {
1028 struct fimc_dev *fimc = video_drvdata(file);
1029
1030 return vb2_dqbuf(&fimc->vid_cap.vbq, buf, file->f_flags & O_NONBLOCK);
1031 }
1032
1033 static int fimc_cap_create_bufs(struct file *file, void *priv,
1034 struct v4l2_create_buffers *create)
1035 {
1036 struct fimc_dev *fimc = video_drvdata(file);
1037
1038 return vb2_create_bufs(&fimc->vid_cap.vbq, create);
1039 }
1040
1041 static int fimc_cap_prepare_buf(struct file *file, void *priv,
1042 struct v4l2_buffer *b)
1043 {
1044 struct fimc_dev *fimc = video_drvdata(file);
1045
1046 return vb2_prepare_buf(&fimc->vid_cap.vbq, b);
1047 }
1048
1049 static int fimc_cap_g_selection(struct file *file, void *fh,
1050 struct v4l2_selection *s)
1051 {
1052 struct fimc_dev *fimc = video_drvdata(file);
1053 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1054 struct fimc_frame *f = &ctx->s_frame;
1055
1056 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1057 return -EINVAL;
1058
1059 switch (s->target) {
1060 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
1061 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1062 f = &ctx->d_frame;
1063 case V4L2_SEL_TGT_CROP_BOUNDS:
1064 case V4L2_SEL_TGT_CROP_DEFAULT:
1065 s->r.left = 0;
1066 s->r.top = 0;
1067 s->r.width = f->o_width;
1068 s->r.height = f->o_height;
1069 return 0;
1070
1071 case V4L2_SEL_TGT_COMPOSE_ACTIVE:
1072 f = &ctx->d_frame;
1073 case V4L2_SEL_TGT_CROP_ACTIVE:
1074 s->r.left = f->offs_h;
1075 s->r.top = f->offs_v;
1076 s->r.width = f->width;
1077 s->r.height = f->height;
1078 return 0;
1079 }
1080
1081 return -EINVAL;
1082 }
1083
1084 /* Return 1 if rectangle a is enclosed in rectangle b, or 0 otherwise. */
1085 int enclosed_rectangle(struct v4l2_rect *a, struct v4l2_rect *b)
1086 {
1087 if (a->left < b->left || a->top < b->top)
1088 return 0;
1089 if (a->left + a->width > b->left + b->width)
1090 return 0;
1091 if (a->top + a->height > b->top + b->height)
1092 return 0;
1093
1094 return 1;
1095 }
1096
1097 static int fimc_cap_s_selection(struct file *file, void *fh,
1098 struct v4l2_selection *s)
1099 {
1100 struct fimc_dev *fimc = video_drvdata(file);
1101 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1102 struct v4l2_rect rect = s->r;
1103 struct fimc_frame *f;
1104 unsigned long flags;
1105 unsigned int pad;
1106
1107 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1108 return -EINVAL;
1109
1110 switch (s->target) {
1111 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
1112 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1113 case V4L2_SEL_TGT_COMPOSE_ACTIVE:
1114 f = &ctx->d_frame;
1115 pad = FIMC_SD_PAD_SOURCE;
1116 break;
1117 case V4L2_SEL_TGT_CROP_BOUNDS:
1118 case V4L2_SEL_TGT_CROP_DEFAULT:
1119 case V4L2_SEL_TGT_CROP_ACTIVE:
1120 f = &ctx->s_frame;
1121 pad = FIMC_SD_PAD_SINK;
1122 break;
1123 default:
1124 return -EINVAL;
1125 }
1126
1127 fimc_capture_try_crop(ctx, &rect, pad);
1128
1129 if (s->flags & V4L2_SEL_FLAG_LE &&
1130 !enclosed_rectangle(&rect, &s->r))
1131 return -ERANGE;
1132
1133 if (s->flags & V4L2_SEL_FLAG_GE &&
1134 !enclosed_rectangle(&s->r, &rect))
1135 return -ERANGE;
1136
1137 s->r = rect;
1138 spin_lock_irqsave(&fimc->slock, flags);
1139 set_frame_crop(f, s->r.left, s->r.top, s->r.width,
1140 s->r.height);
1141 spin_unlock_irqrestore(&fimc->slock, flags);
1142
1143 set_bit(ST_CAPT_APPLY_CFG, &fimc->state);
1144 return 0;
1145 }
1146
1147 static const struct v4l2_ioctl_ops fimc_capture_ioctl_ops = {
1148 .vidioc_querycap = fimc_vidioc_querycap_capture,
1149
1150 .vidioc_enum_fmt_vid_cap_mplane = fimc_cap_enum_fmt_mplane,
1151 .vidioc_try_fmt_vid_cap_mplane = fimc_cap_try_fmt_mplane,
1152 .vidioc_s_fmt_vid_cap_mplane = fimc_cap_s_fmt_mplane,
1153 .vidioc_g_fmt_vid_cap_mplane = fimc_cap_g_fmt_mplane,
1154
1155 .vidioc_reqbufs = fimc_cap_reqbufs,
1156 .vidioc_querybuf = fimc_cap_querybuf,
1157
1158 .vidioc_qbuf = fimc_cap_qbuf,
1159 .vidioc_dqbuf = fimc_cap_dqbuf,
1160
1161 .vidioc_prepare_buf = fimc_cap_prepare_buf,
1162 .vidioc_create_bufs = fimc_cap_create_bufs,
1163
1164 .vidioc_streamon = fimc_cap_streamon,
1165 .vidioc_streamoff = fimc_cap_streamoff,
1166
1167 .vidioc_g_selection = fimc_cap_g_selection,
1168 .vidioc_s_selection = fimc_cap_s_selection,
1169
1170 .vidioc_enum_input = fimc_cap_enum_input,
1171 .vidioc_s_input = fimc_cap_s_input,
1172 .vidioc_g_input = fimc_cap_g_input,
1173 };
1174
1175 /* Capture subdev media entity operations */
1176 static int fimc_link_setup(struct media_entity *entity,
1177 const struct media_pad *local,
1178 const struct media_pad *remote, u32 flags)
1179 {
1180 struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
1181 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1182
1183 if (media_entity_type(remote->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
1184 return -EINVAL;
1185
1186 if (WARN_ON(fimc == NULL))
1187 return 0;
1188
1189 dbg("%s --> %s, flags: 0x%x. input: 0x%x",
1190 local->entity->name, remote->entity->name, flags,
1191 fimc->vid_cap.input);
1192
1193 if (flags & MEDIA_LNK_FL_ENABLED) {
1194 if (fimc->vid_cap.input != 0)
1195 return -EBUSY;
1196 fimc->vid_cap.input = sd->grp_id;
1197 return 0;
1198 }
1199
1200 fimc->vid_cap.input = 0;
1201 return 0;
1202 }
1203
1204 static const struct media_entity_operations fimc_sd_media_ops = {
1205 .link_setup = fimc_link_setup,
1206 };
1207
1208 /**
1209 * fimc_sensor_notify - v4l2_device notification from a sensor subdev
1210 * @sd: pointer to a subdev generating the notification
1211 * @notification: the notification type, must be S5P_FIMC_TX_END_NOTIFY
1212 * @arg: pointer to an u32 type integer that stores the frame payload value
1213 *
1214 * The End Of Frame notification sent by sensor subdev in its still capture
1215 * mode. If there is only a single VSYNC generated by the sensor at the
1216 * beginning of a frame transmission, FIMC does not issue the LastIrq
1217 * (end of frame) interrupt. And this notification is used to complete the
1218 * frame capture and returning a buffer to user-space. Subdev drivers should
1219 * call this notification from their last 'End of frame capture' interrupt.
1220 */
1221 void fimc_sensor_notify(struct v4l2_subdev *sd, unsigned int notification,
1222 void *arg)
1223 {
1224 struct fimc_sensor_info *sensor;
1225 struct fimc_vid_buffer *buf;
1226 struct fimc_md *fmd;
1227 struct fimc_dev *fimc;
1228 unsigned long flags;
1229
1230 if (sd == NULL)
1231 return;
1232
1233 sensor = v4l2_get_subdev_hostdata(sd);
1234 fmd = entity_to_fimc_mdev(&sd->entity);
1235
1236 spin_lock_irqsave(&fmd->slock, flags);
1237 fimc = sensor ? sensor->host : NULL;
1238
1239 if (fimc && arg && notification == S5P_FIMC_TX_END_NOTIFY &&
1240 test_bit(ST_CAPT_PEND, &fimc->state)) {
1241 unsigned long irq_flags;
1242 spin_lock_irqsave(&fimc->slock, irq_flags);
1243 if (!list_empty(&fimc->vid_cap.active_buf_q)) {
1244 buf = list_entry(fimc->vid_cap.active_buf_q.next,
1245 struct fimc_vid_buffer, list);
1246 vb2_set_plane_payload(&buf->vb, 0, *((u32 *)arg));
1247 }
1248 fimc_capture_irq_handler(fimc, true);
1249 fimc_deactivate_capture(fimc);
1250 spin_unlock_irqrestore(&fimc->slock, irq_flags);
1251 }
1252 spin_unlock_irqrestore(&fmd->slock, flags);
1253 }
1254
1255 static int fimc_subdev_enum_mbus_code(struct v4l2_subdev *sd,
1256 struct v4l2_subdev_fh *fh,
1257 struct v4l2_subdev_mbus_code_enum *code)
1258 {
1259 struct fimc_fmt *fmt;
1260
1261 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, code->index);
1262 if (!fmt)
1263 return -EINVAL;
1264 code->code = fmt->mbus_code;
1265 return 0;
1266 }
1267
1268 static int fimc_subdev_get_fmt(struct v4l2_subdev *sd,
1269 struct v4l2_subdev_fh *fh,
1270 struct v4l2_subdev_format *fmt)
1271 {
1272 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1273 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1274 struct v4l2_mbus_framefmt *mf;
1275 struct fimc_frame *ff;
1276
1277 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1278 mf = v4l2_subdev_get_try_format(fh, fmt->pad);
1279 fmt->format = *mf;
1280 return 0;
1281 }
1282 mf = &fmt->format;
1283 mf->colorspace = V4L2_COLORSPACE_JPEG;
1284 ff = fmt->pad == FIMC_SD_PAD_SINK ? &ctx->s_frame : &ctx->d_frame;
1285
1286 mutex_lock(&fimc->lock);
1287 /* The pixel code is same on both input and output pad */
1288 if (!WARN_ON(ctx->s_frame.fmt == NULL))
1289 mf->code = ctx->s_frame.fmt->mbus_code;
1290 mf->width = ff->f_width;
1291 mf->height = ff->f_height;
1292 mutex_unlock(&fimc->lock);
1293
1294 return 0;
1295 }
1296
1297 static int fimc_subdev_set_fmt(struct v4l2_subdev *sd,
1298 struct v4l2_subdev_fh *fh,
1299 struct v4l2_subdev_format *fmt)
1300 {
1301 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1302 struct v4l2_mbus_framefmt *mf = &fmt->format;
1303 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1304 struct fimc_frame *ff;
1305 struct fimc_fmt *ffmt;
1306
1307 dbg("pad%d: code: 0x%x, %dx%d",
1308 fmt->pad, mf->code, mf->width, mf->height);
1309
1310 if (fmt->pad == FIMC_SD_PAD_SOURCE &&
1311 vb2_is_busy(&fimc->vid_cap.vbq))
1312 return -EBUSY;
1313
1314 mutex_lock(&fimc->lock);
1315 ffmt = fimc_capture_try_format(ctx, &mf->width, &mf->height,
1316 &mf->code, NULL, fmt->pad);
1317 mutex_unlock(&fimc->lock);
1318 mf->colorspace = V4L2_COLORSPACE_JPEG;
1319
1320 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1321 mf = v4l2_subdev_get_try_format(fh, fmt->pad);
1322 *mf = fmt->format;
1323 return 0;
1324 }
1325 /* Update RGB Alpha control state and value range */
1326 fimc_alpha_ctrl_update(ctx);
1327
1328 fimc_capture_mark_jpeg_xfer(ctx, fimc_fmt_is_jpeg(ffmt->color));
1329
1330 ff = fmt->pad == FIMC_SD_PAD_SINK ?
1331 &ctx->s_frame : &ctx->d_frame;
1332
1333 mutex_lock(&fimc->lock);
1334 set_frame_bounds(ff, mf->width, mf->height);
1335 fimc->vid_cap.mf = *mf;
1336 ff->fmt = ffmt;
1337
1338 /* Reset the crop rectangle if required. */
1339 if (!(fmt->pad == FIMC_SD_PAD_SOURCE && (ctx->state & FIMC_DST_CROP)))
1340 set_frame_crop(ff, 0, 0, mf->width, mf->height);
1341
1342 if (fmt->pad == FIMC_SD_PAD_SINK)
1343 ctx->state &= ~FIMC_DST_CROP;
1344 mutex_unlock(&fimc->lock);
1345 return 0;
1346 }
1347
1348 static int fimc_subdev_get_crop(struct v4l2_subdev *sd,
1349 struct v4l2_subdev_fh *fh,
1350 struct v4l2_subdev_crop *crop)
1351 {
1352 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1353 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1354 struct v4l2_rect *r = &crop->rect;
1355 struct fimc_frame *ff;
1356
1357 if (crop->which == V4L2_SUBDEV_FORMAT_TRY) {
1358 crop->rect = *v4l2_subdev_get_try_crop(fh, crop->pad);
1359 return 0;
1360 }
1361 ff = crop->pad == FIMC_SD_PAD_SINK ?
1362 &ctx->s_frame : &ctx->d_frame;
1363
1364 mutex_lock(&fimc->lock);
1365 r->left = ff->offs_h;
1366 r->top = ff->offs_v;
1367 r->width = ff->width;
1368 r->height = ff->height;
1369 mutex_unlock(&fimc->lock);
1370
1371 dbg("ff:%p, pad%d: l:%d, t:%d, %dx%d, f_w: %d, f_h: %d",
1372 ff, crop->pad, r->left, r->top, r->width, r->height,
1373 ff->f_width, ff->f_height);
1374
1375 return 0;
1376 }
1377
1378 static int fimc_subdev_set_crop(struct v4l2_subdev *sd,
1379 struct v4l2_subdev_fh *fh,
1380 struct v4l2_subdev_crop *crop)
1381 {
1382 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1383 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1384 struct v4l2_rect *r = &crop->rect;
1385 struct fimc_frame *ff;
1386 unsigned long flags;
1387
1388 dbg("(%d,%d)/%dx%d", r->left, r->top, r->width, r->height);
1389
1390 ff = crop->pad == FIMC_SD_PAD_SOURCE ?
1391 &ctx->d_frame : &ctx->s_frame;
1392
1393 mutex_lock(&fimc->lock);
1394 fimc_capture_try_crop(ctx, r, crop->pad);
1395
1396 if (crop->which == V4L2_SUBDEV_FORMAT_TRY) {
1397 mutex_unlock(&fimc->lock);
1398 *v4l2_subdev_get_try_crop(fh, crop->pad) = *r;
1399 return 0;
1400 }
1401 spin_lock_irqsave(&fimc->slock, flags);
1402 set_frame_crop(ff, r->left, r->top, r->width, r->height);
1403 if (crop->pad == FIMC_SD_PAD_SOURCE)
1404 ctx->state |= FIMC_DST_CROP;
1405
1406 set_bit(ST_CAPT_APPLY_CFG, &fimc->state);
1407 spin_unlock_irqrestore(&fimc->slock, flags);
1408
1409 dbg("pad%d: (%d,%d)/%dx%d", crop->pad, r->left, r->top,
1410 r->width, r->height);
1411
1412 mutex_unlock(&fimc->lock);
1413 return 0;
1414 }
1415
1416 static struct v4l2_subdev_pad_ops fimc_subdev_pad_ops = {
1417 .enum_mbus_code = fimc_subdev_enum_mbus_code,
1418 .get_fmt = fimc_subdev_get_fmt,
1419 .set_fmt = fimc_subdev_set_fmt,
1420 .get_crop = fimc_subdev_get_crop,
1421 .set_crop = fimc_subdev_set_crop,
1422 };
1423
1424 static struct v4l2_subdev_ops fimc_subdev_ops = {
1425 .pad = &fimc_subdev_pad_ops,
1426 };
1427
1428 static int fimc_create_capture_subdev(struct fimc_dev *fimc,
1429 struct v4l2_device *v4l2_dev)
1430 {
1431 struct v4l2_subdev *sd;
1432 int ret;
1433
1434 sd = kzalloc(sizeof(*sd), GFP_KERNEL);
1435 if (!sd)
1436 return -ENOMEM;
1437
1438 v4l2_subdev_init(sd, &fimc_subdev_ops);
1439 sd->flags = V4L2_SUBDEV_FL_HAS_DEVNODE;
1440 snprintf(sd->name, sizeof(sd->name), "FIMC.%d", fimc->pdev->id);
1441
1442 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
1443 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
1444 ret = media_entity_init(&sd->entity, FIMC_SD_PADS_NUM,
1445 fimc->vid_cap.sd_pads, 0);
1446 if (ret)
1447 goto me_err;
1448 ret = v4l2_device_register_subdev(v4l2_dev, sd);
1449 if (ret)
1450 goto sd_err;
1451
1452 fimc->vid_cap.subdev = sd;
1453 v4l2_set_subdevdata(sd, fimc);
1454 sd->entity.ops = &fimc_sd_media_ops;
1455 return 0;
1456 sd_err:
1457 media_entity_cleanup(&sd->entity);
1458 me_err:
1459 kfree(sd);
1460 return ret;
1461 }
1462
1463 static void fimc_destroy_capture_subdev(struct fimc_dev *fimc)
1464 {
1465 struct v4l2_subdev *sd = fimc->vid_cap.subdev;
1466
1467 if (!sd)
1468 return;
1469 media_entity_cleanup(&sd->entity);
1470 v4l2_device_unregister_subdev(sd);
1471 kfree(sd);
1472 fimc->vid_cap.subdev = NULL;
1473 }
1474
1475 /* Set default format at the sensor and host interface */
1476 static int fimc_capture_set_default_format(struct fimc_dev *fimc)
1477 {
1478 struct v4l2_format fmt = {
1479 .type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
1480 .fmt.pix_mp = {
1481 .width = 640,
1482 .height = 480,
1483 .pixelformat = V4L2_PIX_FMT_YUYV,
1484 .field = V4L2_FIELD_NONE,
1485 .colorspace = V4L2_COLORSPACE_JPEG,
1486 },
1487 };
1488
1489 return fimc_capture_set_format(fimc, &fmt);
1490 }
1491
1492 /* fimc->lock must be already initialized */
1493 int fimc_register_capture_device(struct fimc_dev *fimc,
1494 struct v4l2_device *v4l2_dev)
1495 {
1496 struct video_device *vfd;
1497 struct fimc_vid_cap *vid_cap;
1498 struct fimc_ctx *ctx;
1499 struct vb2_queue *q;
1500 int ret = -ENOMEM;
1501
1502 ctx = kzalloc(sizeof *ctx, GFP_KERNEL);
1503 if (!ctx)
1504 return -ENOMEM;
1505
1506 ctx->fimc_dev = fimc;
1507 ctx->in_path = FIMC_CAMERA;
1508 ctx->out_path = FIMC_DMA;
1509 ctx->state = FIMC_CTX_CAP;
1510 ctx->s_frame.fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, 0);
1511 ctx->d_frame.fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, 0);
1512
1513 vfd = video_device_alloc();
1514 if (!vfd) {
1515 v4l2_err(v4l2_dev, "Failed to allocate video device\n");
1516 goto err_vd_alloc;
1517 }
1518
1519 snprintf(vfd->name, sizeof(vfd->name), "%s.capture",
1520 dev_name(&fimc->pdev->dev));
1521
1522 vfd->fops = &fimc_capture_fops;
1523 vfd->ioctl_ops = &fimc_capture_ioctl_ops;
1524 vfd->v4l2_dev = v4l2_dev;
1525 vfd->minor = -1;
1526 vfd->release = video_device_release;
1527 vfd->lock = &fimc->lock;
1528 /* Locking in file operations other than ioctl should be done
1529 by the driver, not the V4L2 core.
1530 This driver needs auditing so that this flag can be removed. */
1531 set_bit(V4L2_FL_LOCK_ALL_FOPS, &vfd->flags);
1532 video_set_drvdata(vfd, fimc);
1533
1534 vid_cap = &fimc->vid_cap;
1535 vid_cap->vfd = vfd;
1536 vid_cap->active_buf_cnt = 0;
1537 vid_cap->reqbufs_count = 0;
1538 vid_cap->refcnt = 0;
1539
1540 INIT_LIST_HEAD(&vid_cap->pending_buf_q);
1541 INIT_LIST_HEAD(&vid_cap->active_buf_q);
1542 vid_cap->ctx = ctx;
1543
1544 q = &fimc->vid_cap.vbq;
1545 memset(q, 0, sizeof(*q));
1546 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1547 q->io_modes = VB2_MMAP | VB2_USERPTR;
1548 q->drv_priv = fimc->vid_cap.ctx;
1549 q->ops = &fimc_capture_qops;
1550 q->mem_ops = &vb2_dma_contig_memops;
1551 q->buf_struct_size = sizeof(struct fimc_vid_buffer);
1552
1553 vb2_queue_init(q);
1554
1555 fimc->vid_cap.vd_pad.flags = MEDIA_PAD_FL_SINK;
1556 ret = media_entity_init(&vfd->entity, 1, &fimc->vid_cap.vd_pad, 0);
1557 if (ret)
1558 goto err_ent;
1559 ret = fimc_create_capture_subdev(fimc, v4l2_dev);
1560 if (ret)
1561 goto err_sd_reg;
1562
1563 vfd->ctrl_handler = &ctx->ctrl_handler;
1564 return 0;
1565
1566 err_sd_reg:
1567 media_entity_cleanup(&vfd->entity);
1568 err_ent:
1569 video_device_release(vfd);
1570 err_vd_alloc:
1571 kfree(ctx);
1572 return ret;
1573 }
1574
1575 void fimc_unregister_capture_device(struct fimc_dev *fimc)
1576 {
1577 struct video_device *vfd = fimc->vid_cap.vfd;
1578
1579 if (vfd) {
1580 media_entity_cleanup(&vfd->entity);
1581 /* Can also be called if video device was
1582 not registered */
1583 video_unregister_device(vfd);
1584 }
1585 fimc_destroy_capture_subdev(fimc);
1586 kfree(fimc->vid_cap.ctx);
1587 fimc->vid_cap.ctx = NULL;
1588 }
kernel source for telekom puls (alcatel/mediatek)