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[media] s5p-fimc: Adjust pixel height alignments according to the IP revision
[deliverable/linux.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 clear_bit(ST_CAPT_APPLY_CFG, &fimc->state);
67 }
68 spin_unlock_irqrestore(&fimc->slock, flags);
69 return ret;
70 }
71
72 static int fimc_capture_state_cleanup(struct fimc_dev *fimc, bool suspend)
73 {
74 struct fimc_vid_cap *cap = &fimc->vid_cap;
75 struct fimc_vid_buffer *buf;
76 unsigned long flags;
77 bool streaming;
78
79 spin_lock_irqsave(&fimc->slock, flags);
80 streaming = fimc->state & (1 << ST_CAPT_ISP_STREAM);
81
82 fimc->state &= ~(1 << ST_CAPT_RUN | 1 << ST_CAPT_SHUT |
83 1 << ST_CAPT_STREAM | 1 << ST_CAPT_ISP_STREAM);
84 if (!suspend)
85 fimc->state &= ~(1 << ST_CAPT_PEND | 1 << ST_CAPT_SUSPENDED);
86
87 /* Release unused buffers */
88 while (!suspend && !list_empty(&cap->pending_buf_q)) {
89 buf = fimc_pending_queue_pop(cap);
90 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
91 }
92 /* If suspending put unused buffers onto pending queue */
93 while (!list_empty(&cap->active_buf_q)) {
94 buf = fimc_active_queue_pop(cap);
95 if (suspend)
96 fimc_pending_queue_add(cap, buf);
97 else
98 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
99 }
100 set_bit(ST_CAPT_SUSPENDED, &fimc->state);
101
102 fimc_hw_reset(fimc);
103 cap->buf_index = 0;
104
105 spin_unlock_irqrestore(&fimc->slock, flags);
106
107 if (streaming)
108 return fimc_pipeline_s_stream(fimc, 0);
109 else
110 return 0;
111 }
112
113 static int fimc_stop_capture(struct fimc_dev *fimc, bool suspend)
114 {
115 unsigned long flags;
116
117 if (!fimc_capture_active(fimc))
118 return 0;
119
120 spin_lock_irqsave(&fimc->slock, flags);
121 set_bit(ST_CAPT_SHUT, &fimc->state);
122 fimc_deactivate_capture(fimc);
123 spin_unlock_irqrestore(&fimc->slock, flags);
124
125 wait_event_timeout(fimc->irq_queue,
126 !test_bit(ST_CAPT_SHUT, &fimc->state),
127 (2*HZ/10)); /* 200 ms */
128
129 return fimc_capture_state_cleanup(fimc, suspend);
130 }
131
132 /**
133 * fimc_capture_config_update - apply the camera interface configuration
134 *
135 * To be called from within the interrupt handler with fimc.slock
136 * spinlock held. It updates the camera pixel crop, rotation and
137 * image flip in H/W.
138 */
139 int fimc_capture_config_update(struct fimc_ctx *ctx)
140 {
141 struct fimc_dev *fimc = ctx->fimc_dev;
142 int ret;
143
144 if (!test_bit(ST_CAPT_APPLY_CFG, &fimc->state))
145 return 0;
146
147 spin_lock(&ctx->slock);
148 fimc_hw_set_camera_offset(fimc, &ctx->s_frame);
149 ret = fimc_set_scaler_info(ctx);
150 if (ret == 0) {
151 fimc_hw_set_prescaler(ctx);
152 fimc_hw_set_mainscaler(ctx);
153 fimc_hw_set_target_format(ctx);
154 fimc_hw_set_rotation(ctx);
155 fimc_prepare_dma_offset(ctx, &ctx->d_frame);
156 fimc_hw_set_out_dma(ctx);
157 clear_bit(ST_CAPT_APPLY_CFG, &fimc->state);
158 }
159 spin_unlock(&ctx->slock);
160 return ret;
161 }
162
163 static int start_streaming(struct vb2_queue *q, unsigned int count)
164 {
165 struct fimc_ctx *ctx = q->drv_priv;
166 struct fimc_dev *fimc = ctx->fimc_dev;
167 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
168 int min_bufs;
169 int ret;
170
171 vid_cap->frame_count = 0;
172
173 ret = fimc_init_capture(fimc);
174 if (ret)
175 goto error;
176
177 set_bit(ST_CAPT_PEND, &fimc->state);
178
179 min_bufs = fimc->vid_cap.reqbufs_count > 1 ? 2 : 1;
180
181 if (vid_cap->active_buf_cnt >= min_bufs &&
182 !test_and_set_bit(ST_CAPT_STREAM, &fimc->state)) {
183 fimc_activate_capture(ctx);
184
185 if (!test_and_set_bit(ST_CAPT_ISP_STREAM, &fimc->state))
186 fimc_pipeline_s_stream(fimc, 1);
187 }
188
189 return 0;
190 error:
191 fimc_capture_state_cleanup(fimc, false);
192 return ret;
193 }
194
195 static int stop_streaming(struct vb2_queue *q)
196 {
197 struct fimc_ctx *ctx = q->drv_priv;
198 struct fimc_dev *fimc = ctx->fimc_dev;
199
200 if (!fimc_capture_active(fimc))
201 return -EINVAL;
202
203 return fimc_stop_capture(fimc, false);
204 }
205
206 int fimc_capture_suspend(struct fimc_dev *fimc)
207 {
208 bool suspend = fimc_capture_busy(fimc);
209
210 int ret = fimc_stop_capture(fimc, suspend);
211 if (ret)
212 return ret;
213 return fimc_pipeline_shutdown(fimc);
214 }
215
216 static void buffer_queue(struct vb2_buffer *vb);
217
218 int fimc_capture_resume(struct fimc_dev *fimc)
219 {
220 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
221 struct fimc_vid_buffer *buf;
222 int i;
223
224 if (!test_and_clear_bit(ST_CAPT_SUSPENDED, &fimc->state))
225 return 0;
226
227 INIT_LIST_HEAD(&fimc->vid_cap.active_buf_q);
228 vid_cap->buf_index = 0;
229 fimc_pipeline_initialize(fimc, &fimc->vid_cap.vfd->entity,
230 false);
231 fimc_init_capture(fimc);
232
233 clear_bit(ST_CAPT_SUSPENDED, &fimc->state);
234
235 for (i = 0; i < vid_cap->reqbufs_count; i++) {
236 if (list_empty(&vid_cap->pending_buf_q))
237 break;
238 buf = fimc_pending_queue_pop(vid_cap);
239 buffer_queue(&buf->vb);
240 }
241 return 0;
242
243 }
244
245 static unsigned int get_plane_size(struct fimc_frame *fr, unsigned int plane)
246 {
247 if (!fr || plane >= fr->fmt->memplanes)
248 return 0;
249 return fr->f_width * fr->f_height * fr->fmt->depth[plane] / 8;
250 }
251
252 static int queue_setup(struct vb2_queue *vq, const struct v4l2_format *pfmt,
253 unsigned int *num_buffers, unsigned int *num_planes,
254 unsigned int sizes[], void *allocators[])
255 {
256 struct fimc_ctx *ctx = vq->drv_priv;
257 struct fimc_fmt *fmt = ctx->d_frame.fmt;
258 int i;
259
260 if (!fmt)
261 return -EINVAL;
262
263 *num_planes = fmt->memplanes;
264
265 for (i = 0; i < fmt->memplanes; i++) {
266 sizes[i] = get_plane_size(&ctx->d_frame, i);
267 allocators[i] = ctx->fimc_dev->alloc_ctx;
268 }
269
270 return 0;
271 }
272
273 static int buffer_prepare(struct vb2_buffer *vb)
274 {
275 struct vb2_queue *vq = vb->vb2_queue;
276 struct fimc_ctx *ctx = vq->drv_priv;
277 int i;
278
279 if (ctx->d_frame.fmt == NULL)
280 return -EINVAL;
281
282 for (i = 0; i < ctx->d_frame.fmt->memplanes; i++) {
283 unsigned long size = ctx->d_frame.payload[i];
284
285 if (vb2_plane_size(vb, i) < size) {
286 v4l2_err(ctx->fimc_dev->vid_cap.vfd,
287 "User buffer too small (%ld < %ld)\n",
288 vb2_plane_size(vb, i), size);
289 return -EINVAL;
290 }
291 vb2_set_plane_payload(vb, i, size);
292 }
293
294 return 0;
295 }
296
297 static void buffer_queue(struct vb2_buffer *vb)
298 {
299 struct fimc_vid_buffer *buf
300 = container_of(vb, struct fimc_vid_buffer, vb);
301 struct fimc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
302 struct fimc_dev *fimc = ctx->fimc_dev;
303 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
304 unsigned long flags;
305 int min_bufs;
306
307 spin_lock_irqsave(&fimc->slock, flags);
308 fimc_prepare_addr(ctx, &buf->vb, &ctx->d_frame, &buf->paddr);
309
310 if (!test_bit(ST_CAPT_SUSPENDED, &fimc->state) &&
311 !test_bit(ST_CAPT_STREAM, &fimc->state) &&
312 vid_cap->active_buf_cnt < FIMC_MAX_OUT_BUFS) {
313 /* Setup the buffer directly for processing. */
314 int buf_id = (vid_cap->reqbufs_count == 1) ? -1 :
315 vid_cap->buf_index;
316
317 fimc_hw_set_output_addr(fimc, &buf->paddr, buf_id);
318 buf->index = vid_cap->buf_index;
319 fimc_active_queue_add(vid_cap, buf);
320
321 if (++vid_cap->buf_index >= FIMC_MAX_OUT_BUFS)
322 vid_cap->buf_index = 0;
323 } else {
324 fimc_pending_queue_add(vid_cap, buf);
325 }
326
327 min_bufs = vid_cap->reqbufs_count > 1 ? 2 : 1;
328
329
330 if (vb2_is_streaming(&vid_cap->vbq) &&
331 vid_cap->active_buf_cnt >= min_bufs &&
332 !test_and_set_bit(ST_CAPT_STREAM, &fimc->state)) {
333 fimc_activate_capture(ctx);
334 spin_unlock_irqrestore(&fimc->slock, flags);
335
336 if (!test_and_set_bit(ST_CAPT_ISP_STREAM, &fimc->state))
337 fimc_pipeline_s_stream(fimc, 1);
338 return;
339 }
340 spin_unlock_irqrestore(&fimc->slock, flags);
341 }
342
343 static void fimc_lock(struct vb2_queue *vq)
344 {
345 struct fimc_ctx *ctx = vb2_get_drv_priv(vq);
346 mutex_lock(&ctx->fimc_dev->lock);
347 }
348
349 static void fimc_unlock(struct vb2_queue *vq)
350 {
351 struct fimc_ctx *ctx = vb2_get_drv_priv(vq);
352 mutex_unlock(&ctx->fimc_dev->lock);
353 }
354
355 static struct vb2_ops fimc_capture_qops = {
356 .queue_setup = queue_setup,
357 .buf_prepare = buffer_prepare,
358 .buf_queue = buffer_queue,
359 .wait_prepare = fimc_unlock,
360 .wait_finish = fimc_lock,
361 .start_streaming = start_streaming,
362 .stop_streaming = stop_streaming,
363 };
364
365 /**
366 * fimc_capture_ctrls_create - initialize the control handler
367 * Initialize the capture video node control handler and fill it
368 * with the FIMC controls. Inherit any sensor's controls if the
369 * 'user_subdev_api' flag is false (default behaviour).
370 * This function need to be called with the graph mutex held.
371 */
372 int fimc_capture_ctrls_create(struct fimc_dev *fimc)
373 {
374 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
375 int ret;
376
377 if (WARN_ON(vid_cap->ctx == NULL))
378 return -ENXIO;
379 if (vid_cap->ctx->ctrls_rdy)
380 return 0;
381
382 ret = fimc_ctrls_create(vid_cap->ctx);
383 if (ret || vid_cap->user_subdev_api)
384 return ret;
385
386 return v4l2_ctrl_add_handler(&vid_cap->ctx->ctrl_handler,
387 fimc->pipeline.sensor->ctrl_handler);
388 }
389
390 static int fimc_capture_set_default_format(struct fimc_dev *fimc);
391
392 static int fimc_capture_open(struct file *file)
393 {
394 struct fimc_dev *fimc = video_drvdata(file);
395 int ret = v4l2_fh_open(file);
396
397 if (ret)
398 return ret;
399
400 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
401
402 /* Return if the corresponding video mem2mem node is already opened. */
403 if (fimc_m2m_active(fimc))
404 return -EBUSY;
405
406 set_bit(ST_CAPT_BUSY, &fimc->state);
407 pm_runtime_get_sync(&fimc->pdev->dev);
408
409 if (++fimc->vid_cap.refcnt == 1) {
410 ret = fimc_pipeline_initialize(fimc,
411 &fimc->vid_cap.vfd->entity, true);
412 if (ret < 0) {
413 dev_err(&fimc->pdev->dev,
414 "Video pipeline initialization failed\n");
415 pm_runtime_put_sync(&fimc->pdev->dev);
416 fimc->vid_cap.refcnt--;
417 v4l2_fh_release(file);
418 clear_bit(ST_CAPT_BUSY, &fimc->state);
419 return ret;
420 }
421 ret = fimc_capture_ctrls_create(fimc);
422
423 if (!ret && !fimc->vid_cap.user_subdev_api)
424 ret = fimc_capture_set_default_format(fimc);
425 }
426 return ret;
427 }
428
429 static int fimc_capture_close(struct file *file)
430 {
431 struct fimc_dev *fimc = video_drvdata(file);
432
433 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
434
435 if (--fimc->vid_cap.refcnt == 0) {
436 clear_bit(ST_CAPT_BUSY, &fimc->state);
437 fimc_stop_capture(fimc, false);
438 fimc_pipeline_shutdown(fimc);
439 clear_bit(ST_CAPT_SUSPENDED, &fimc->state);
440 }
441
442 pm_runtime_put(&fimc->pdev->dev);
443
444 if (fimc->vid_cap.refcnt == 0) {
445 vb2_queue_release(&fimc->vid_cap.vbq);
446 fimc_ctrls_delete(fimc->vid_cap.ctx);
447 }
448 return v4l2_fh_release(file);
449 }
450
451 static unsigned int fimc_capture_poll(struct file *file,
452 struct poll_table_struct *wait)
453 {
454 struct fimc_dev *fimc = video_drvdata(file);
455
456 return vb2_poll(&fimc->vid_cap.vbq, file, wait);
457 }
458
459 static int fimc_capture_mmap(struct file *file, struct vm_area_struct *vma)
460 {
461 struct fimc_dev *fimc = video_drvdata(file);
462
463 return vb2_mmap(&fimc->vid_cap.vbq, vma);
464 }
465
466 static const struct v4l2_file_operations fimc_capture_fops = {
467 .owner = THIS_MODULE,
468 .open = fimc_capture_open,
469 .release = fimc_capture_close,
470 .poll = fimc_capture_poll,
471 .unlocked_ioctl = video_ioctl2,
472 .mmap = fimc_capture_mmap,
473 };
474
475 /*
476 * Format and crop negotiation helpers
477 */
478
479 static struct fimc_fmt *fimc_capture_try_format(struct fimc_ctx *ctx,
480 u32 *width, u32 *height,
481 u32 *code, u32 *fourcc, int pad)
482 {
483 bool rotation = ctx->rotation == 90 || ctx->rotation == 270;
484 struct fimc_dev *fimc = ctx->fimc_dev;
485 struct samsung_fimc_variant *var = fimc->variant;
486 struct fimc_pix_limit *pl = var->pix_limit;
487 struct fimc_frame *dst = &ctx->d_frame;
488 u32 depth, min_w, max_w, min_h, align_h = 3;
489 u32 mask = FMT_FLAGS_CAM;
490 struct fimc_fmt *ffmt;
491
492 /* Color conversion from/to JPEG is not supported */
493 if (code && ctx->s_frame.fmt && pad == FIMC_SD_PAD_SOURCE &&
494 fimc_fmt_is_jpeg(ctx->s_frame.fmt->color))
495 *code = V4L2_MBUS_FMT_JPEG_1X8;
496
497 if (fourcc && *fourcc != V4L2_PIX_FMT_JPEG && pad != FIMC_SD_PAD_SINK)
498 mask |= FMT_FLAGS_M2M;
499
500 ffmt = fimc_find_format(fourcc, code, mask, 0);
501 if (WARN_ON(!ffmt))
502 return NULL;
503 if (code)
504 *code = ffmt->mbus_code;
505 if (fourcc)
506 *fourcc = ffmt->fourcc;
507
508 if (pad == FIMC_SD_PAD_SINK) {
509 max_w = fimc_fmt_is_jpeg(ffmt->color) ?
510 pl->scaler_dis_w : pl->scaler_en_w;
511 /* Apply the camera input interface pixel constraints */
512 v4l_bound_align_image(width, max_t(u32, *width, 32), max_w, 4,
513 height, max_t(u32, *height, 32),
514 FIMC_CAMIF_MAX_HEIGHT,
515 fimc_fmt_is_jpeg(ffmt->color) ? 3 : 1,
516 0);
517 return ffmt;
518 }
519 /* Can't scale or crop in transparent (JPEG) transfer mode */
520 if (fimc_fmt_is_jpeg(ffmt->color)) {
521 *width = ctx->s_frame.f_width;
522 *height = ctx->s_frame.f_height;
523 return ffmt;
524 }
525 /* Apply the scaler and the output DMA constraints */
526 max_w = rotation ? pl->out_rot_en_w : pl->out_rot_dis_w;
527 min_w = ctx->state & FIMC_DST_CROP ? dst->width : var->min_out_pixsize;
528 min_h = ctx->state & FIMC_DST_CROP ? dst->height : var->min_out_pixsize;
529 if (var->min_vsize_align == 1 && !rotation)
530 align_h = fimc_fmt_is_rgb(ffmt->color) ? 0 : 1;
531
532 depth = fimc_get_format_depth(ffmt);
533 v4l_bound_align_image(width, min_w, max_w,
534 ffs(var->min_out_pixsize) - 1,
535 height, min_h, FIMC_CAMIF_MAX_HEIGHT,
536 align_h,
537 64/(ALIGN(depth, 8)));
538
539 dbg("pad%d: code: 0x%x, %dx%d. dst fmt: %dx%d",
540 pad, code ? *code : 0, *width, *height,
541 dst->f_width, dst->f_height);
542
543 return ffmt;
544 }
545
546 static void fimc_capture_try_crop(struct fimc_ctx *ctx, struct v4l2_rect *r,
547 int pad)
548 {
549 bool rotate = ctx->rotation == 90 || ctx->rotation == 270;
550 struct fimc_dev *fimc = ctx->fimc_dev;
551 struct samsung_fimc_variant *var = fimc->variant;
552 struct fimc_pix_limit *pl = var->pix_limit;
553 struct fimc_frame *sink = &ctx->s_frame;
554 u32 max_w, max_h, min_w = 0, min_h = 0, min_sz;
555 u32 align_sz = 0, align_h = 4;
556 u32 max_sc_h, max_sc_v;
557
558 /* In JPEG transparent transfer mode cropping is not supported */
559 if (fimc_fmt_is_jpeg(ctx->d_frame.fmt->color)) {
560 r->width = sink->f_width;
561 r->height = sink->f_height;
562 r->left = r->top = 0;
563 return;
564 }
565 if (pad == FIMC_SD_PAD_SOURCE) {
566 if (ctx->rotation != 90 && ctx->rotation != 270)
567 align_h = 1;
568 max_sc_h = min(SCALER_MAX_HRATIO, 1 << (ffs(sink->width) - 3));
569 max_sc_v = min(SCALER_MAX_VRATIO, 1 << (ffs(sink->height) - 1));
570 min_sz = var->min_out_pixsize;
571 } else {
572 u32 depth = fimc_get_format_depth(sink->fmt);
573 align_sz = 64/ALIGN(depth, 8);
574 min_sz = var->min_inp_pixsize;
575 min_w = min_h = min_sz;
576 max_sc_h = max_sc_v = 1;
577 }
578 /*
579 * For the crop rectangle at source pad the following constraints
580 * must be met:
581 * - it must fit in the sink pad format rectangle (f_width/f_height);
582 * - maximum downscaling ratio is 64;
583 * - maximum crop size depends if the rotator is used or not;
584 * - the sink pad format width/height must be 4 multiple of the
585 * prescaler ratios determined by sink pad size and source pad crop,
586 * the prescaler ratio is returned by fimc_get_scaler_factor().
587 */
588 max_w = min_t(u32,
589 rotate ? pl->out_rot_en_w : pl->out_rot_dis_w,
590 rotate ? sink->f_height : sink->f_width);
591 max_h = min_t(u32, FIMC_CAMIF_MAX_HEIGHT, sink->f_height);
592 if (pad == FIMC_SD_PAD_SOURCE) {
593 min_w = min_t(u32, max_w, sink->f_width / max_sc_h);
594 min_h = min_t(u32, max_h, sink->f_height / max_sc_v);
595 if (rotate) {
596 swap(max_sc_h, max_sc_v);
597 swap(min_w, min_h);
598 }
599 }
600 v4l_bound_align_image(&r->width, min_w, max_w, ffs(min_sz) - 1,
601 &r->height, min_h, max_h, align_h,
602 align_sz);
603 /* Adjust left/top if cropping rectangle is out of bounds */
604 r->left = clamp_t(u32, r->left, 0, sink->f_width - r->width);
605 r->top = clamp_t(u32, r->top, 0, sink->f_height - r->height);
606 r->left = round_down(r->left, var->hor_offs_align);
607
608 dbg("pad%d: (%d,%d)/%dx%d, sink fmt: %dx%d",
609 pad, r->left, r->top, r->width, r->height,
610 sink->f_width, sink->f_height);
611 }
612
613 /*
614 * The video node ioctl operations
615 */
616 static int fimc_vidioc_querycap_capture(struct file *file, void *priv,
617 struct v4l2_capability *cap)
618 {
619 struct fimc_dev *fimc = video_drvdata(file);
620
621 strncpy(cap->driver, fimc->pdev->name, sizeof(cap->driver) - 1);
622 strncpy(cap->card, fimc->pdev->name, sizeof(cap->card) - 1);
623 cap->bus_info[0] = 0;
624 cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_CAPTURE_MPLANE;
625
626 return 0;
627 }
628
629 static int fimc_cap_enum_fmt_mplane(struct file *file, void *priv,
630 struct v4l2_fmtdesc *f)
631 {
632 struct fimc_fmt *fmt;
633
634 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM | FMT_FLAGS_M2M,
635 f->index);
636 if (!fmt)
637 return -EINVAL;
638 strncpy(f->description, fmt->name, sizeof(f->description) - 1);
639 f->pixelformat = fmt->fourcc;
640 if (fmt->fourcc == V4L2_MBUS_FMT_JPEG_1X8)
641 f->flags |= V4L2_FMT_FLAG_COMPRESSED;
642 return 0;
643 }
644
645 /**
646 * fimc_pipeline_try_format - negotiate and/or set formats at pipeline
647 * elements
648 * @ctx: FIMC capture context
649 * @tfmt: media bus format to try/set on subdevs
650 * @fmt_id: fimc pixel format id corresponding to returned @tfmt (output)
651 * @set: true to set format on subdevs, false to try only
652 */
653 static int fimc_pipeline_try_format(struct fimc_ctx *ctx,
654 struct v4l2_mbus_framefmt *tfmt,
655 struct fimc_fmt **fmt_id,
656 bool set)
657 {
658 struct fimc_dev *fimc = ctx->fimc_dev;
659 struct v4l2_subdev *sd = fimc->pipeline.sensor;
660 struct v4l2_subdev *csis = fimc->pipeline.csis;
661 struct v4l2_subdev_format sfmt;
662 struct v4l2_mbus_framefmt *mf = &sfmt.format;
663 struct fimc_fmt *ffmt = NULL;
664 int ret, i = 0;
665
666 if (WARN_ON(!sd || !tfmt))
667 return -EINVAL;
668
669 memset(&sfmt, 0, sizeof(sfmt));
670 sfmt.format = *tfmt;
671
672 sfmt.which = set ? V4L2_SUBDEV_FORMAT_ACTIVE : V4L2_SUBDEV_FORMAT_TRY;
673 while (1) {
674 ffmt = fimc_find_format(NULL, mf->code != 0 ? &mf->code : NULL,
675 FMT_FLAGS_CAM, i++);
676 if (ffmt == NULL) {
677 /*
678 * Notify user-space if common pixel code for
679 * host and sensor does not exist.
680 */
681 return -EINVAL;
682 }
683 mf->code = tfmt->code = ffmt->mbus_code;
684
685 ret = v4l2_subdev_call(sd, pad, set_fmt, NULL, &sfmt);
686 if (ret)
687 return ret;
688 if (mf->code != tfmt->code) {
689 mf->code = 0;
690 continue;
691 }
692 if (mf->width != tfmt->width || mf->width != tfmt->width) {
693 u32 fcc = ffmt->fourcc;
694 tfmt->width = mf->width;
695 tfmt->height = mf->height;
696 ffmt = fimc_capture_try_format(ctx,
697 &tfmt->width, &tfmt->height,
698 NULL, &fcc, FIMC_SD_PAD_SOURCE);
699 if (ffmt && ffmt->mbus_code)
700 mf->code = ffmt->mbus_code;
701 if (mf->width != tfmt->width || mf->width != tfmt->width)
702 continue;
703 tfmt->code = mf->code;
704 }
705 if (csis)
706 ret = v4l2_subdev_call(csis, pad, set_fmt, NULL, &sfmt);
707
708 if (mf->code == tfmt->code &&
709 mf->width == tfmt->width && mf->width == tfmt->width)
710 break;
711 }
712
713 if (fmt_id && ffmt)
714 *fmt_id = ffmt;
715 *tfmt = *mf;
716
717 dbg("code: 0x%x, %dx%d, %p", mf->code, mf->width, mf->height, ffmt);
718 return 0;
719 }
720
721 static int fimc_cap_g_fmt_mplane(struct file *file, void *fh,
722 struct v4l2_format *f)
723 {
724 struct fimc_dev *fimc = video_drvdata(file);
725 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
726
727 if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
728 return -EINVAL;
729
730 return fimc_fill_format(&ctx->d_frame, f);
731 }
732
733 static int fimc_cap_try_fmt_mplane(struct file *file, void *fh,
734 struct v4l2_format *f)
735 {
736 struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
737 struct fimc_dev *fimc = video_drvdata(file);
738 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
739 struct v4l2_mbus_framefmt mf;
740 struct fimc_fmt *ffmt = NULL;
741
742 if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
743 return -EINVAL;
744
745 if (pix->pixelformat == V4L2_PIX_FMT_JPEG) {
746 fimc_capture_try_format(ctx, &pix->width, &pix->height,
747 NULL, &pix->pixelformat,
748 FIMC_SD_PAD_SINK);
749 ctx->s_frame.f_width = pix->width;
750 ctx->s_frame.f_height = pix->height;
751 }
752 ffmt = fimc_capture_try_format(ctx, &pix->width, &pix->height,
753 NULL, &pix->pixelformat,
754 FIMC_SD_PAD_SOURCE);
755 if (!ffmt)
756 return -EINVAL;
757
758 if (!fimc->vid_cap.user_subdev_api) {
759 mf.width = pix->width;
760 mf.height = pix->height;
761 mf.code = ffmt->mbus_code;
762 fimc_md_graph_lock(fimc);
763 fimc_pipeline_try_format(ctx, &mf, &ffmt, false);
764 fimc_md_graph_unlock(fimc);
765
766 pix->width = mf.width;
767 pix->height = mf.height;
768 if (ffmt)
769 pix->pixelformat = ffmt->fourcc;
770 }
771
772 fimc_adjust_mplane_format(ffmt, pix->width, pix->height, pix);
773 return 0;
774 }
775
776 static void fimc_capture_mark_jpeg_xfer(struct fimc_ctx *ctx, bool jpeg)
777 {
778 ctx->scaler.enabled = !jpeg;
779 fimc_ctrls_activate(ctx, !jpeg);
780
781 if (jpeg)
782 set_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state);
783 else
784 clear_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state);
785 }
786
787 static int fimc_capture_set_format(struct fimc_dev *fimc, struct v4l2_format *f)
788 {
789 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
790 struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
791 struct v4l2_mbus_framefmt *mf = &fimc->vid_cap.mf;
792 struct fimc_frame *ff = &ctx->d_frame;
793 struct fimc_fmt *s_fmt = NULL;
794 int ret, i;
795
796 if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
797 return -EINVAL;
798 if (vb2_is_busy(&fimc->vid_cap.vbq))
799 return -EBUSY;
800
801 /* Pre-configure format at camera interface input, for JPEG only */
802 if (pix->pixelformat == V4L2_PIX_FMT_JPEG) {
803 fimc_capture_try_format(ctx, &pix->width, &pix->height,
804 NULL, &pix->pixelformat,
805 FIMC_SD_PAD_SINK);
806 ctx->s_frame.f_width = pix->width;
807 ctx->s_frame.f_height = pix->height;
808 }
809 /* Try the format at the scaler and the DMA output */
810 ff->fmt = fimc_capture_try_format(ctx, &pix->width, &pix->height,
811 NULL, &pix->pixelformat,
812 FIMC_SD_PAD_SOURCE);
813 if (!ff->fmt)
814 return -EINVAL;
815 /* Try to match format at the host and the sensor */
816 if (!fimc->vid_cap.user_subdev_api) {
817 mf->code = ff->fmt->mbus_code;
818 mf->width = pix->width;
819 mf->height = pix->height;
820
821 fimc_md_graph_lock(fimc);
822 ret = fimc_pipeline_try_format(ctx, mf, &s_fmt, true);
823 fimc_md_graph_unlock(fimc);
824 if (ret)
825 return ret;
826 pix->width = mf->width;
827 pix->height = mf->height;
828 }
829 fimc_adjust_mplane_format(ff->fmt, pix->width, pix->height, pix);
830 for (i = 0; i < ff->fmt->colplanes; i++)
831 ff->payload[i] =
832 (pix->width * pix->height * ff->fmt->depth[i]) / 8;
833
834 set_frame_bounds(ff, pix->width, pix->height);
835 /* Reset the composition rectangle if not yet configured */
836 if (!(ctx->state & FIMC_DST_CROP))
837 set_frame_crop(ff, 0, 0, pix->width, pix->height);
838
839 fimc_capture_mark_jpeg_xfer(ctx, fimc_fmt_is_jpeg(ff->fmt->color));
840
841 /* Reset cropping and set format at the camera interface input */
842 if (!fimc->vid_cap.user_subdev_api) {
843 ctx->s_frame.fmt = s_fmt;
844 set_frame_bounds(&ctx->s_frame, pix->width, pix->height);
845 set_frame_crop(&ctx->s_frame, 0, 0, pix->width, pix->height);
846 }
847
848 return ret;
849 }
850
851 static int fimc_cap_s_fmt_mplane(struct file *file, void *priv,
852 struct v4l2_format *f)
853 {
854 struct fimc_dev *fimc = video_drvdata(file);
855
856 return fimc_capture_set_format(fimc, f);
857 }
858
859 static int fimc_cap_enum_input(struct file *file, void *priv,
860 struct v4l2_input *i)
861 {
862 struct fimc_dev *fimc = video_drvdata(file);
863 struct v4l2_subdev *sd = fimc->pipeline.sensor;
864
865 if (i->index != 0)
866 return -EINVAL;
867
868 i->type = V4L2_INPUT_TYPE_CAMERA;
869 if (sd)
870 strlcpy(i->name, sd->name, sizeof(i->name));
871 return 0;
872 }
873
874 static int fimc_cap_s_input(struct file *file, void *priv, unsigned int i)
875 {
876 return i == 0 ? i : -EINVAL;
877 }
878
879 static int fimc_cap_g_input(struct file *file, void *priv, unsigned int *i)
880 {
881 *i = 0;
882 return 0;
883 }
884
885 /**
886 * fimc_pipeline_validate - check for formats inconsistencies
887 * between source and sink pad of each link
888 *
889 * Return 0 if all formats match or -EPIPE otherwise.
890 */
891 static int fimc_pipeline_validate(struct fimc_dev *fimc)
892 {
893 struct v4l2_subdev_format sink_fmt, src_fmt;
894 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
895 struct v4l2_subdev *sd;
896 struct media_pad *pad;
897 int ret;
898
899 /* Start with the video capture node pad */
900 pad = media_entity_remote_source(&vid_cap->vd_pad);
901 if (pad == NULL)
902 return -EPIPE;
903 /* FIMC.{N} subdevice */
904 sd = media_entity_to_v4l2_subdev(pad->entity);
905
906 while (1) {
907 /* Retrieve format at the sink pad */
908 pad = &sd->entity.pads[0];
909 if (!(pad->flags & MEDIA_PAD_FL_SINK))
910 break;
911 /* Don't call FIMC subdev operation to avoid nested locking */
912 if (sd == fimc->vid_cap.subdev) {
913 struct fimc_frame *ff = &vid_cap->ctx->s_frame;
914 sink_fmt.format.width = ff->f_width;
915 sink_fmt.format.height = ff->f_height;
916 sink_fmt.format.code = ff->fmt ? ff->fmt->mbus_code : 0;
917 } else {
918 sink_fmt.pad = pad->index;
919 sink_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
920 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &sink_fmt);
921 if (ret < 0 && ret != -ENOIOCTLCMD)
922 return -EPIPE;
923 }
924 /* Retrieve format at the source pad */
925 pad = media_entity_remote_source(pad);
926 if (pad == NULL ||
927 media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
928 break;
929
930 sd = media_entity_to_v4l2_subdev(pad->entity);
931 src_fmt.pad = pad->index;
932 src_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
933 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &src_fmt);
934 if (ret < 0 && ret != -ENOIOCTLCMD)
935 return -EPIPE;
936
937 if (src_fmt.format.width != sink_fmt.format.width ||
938 src_fmt.format.height != sink_fmt.format.height ||
939 src_fmt.format.code != sink_fmt.format.code)
940 return -EPIPE;
941 }
942 return 0;
943 }
944
945 static int fimc_cap_streamon(struct file *file, void *priv,
946 enum v4l2_buf_type type)
947 {
948 struct fimc_dev *fimc = video_drvdata(file);
949 struct fimc_pipeline *p = &fimc->pipeline;
950 int ret;
951
952 if (fimc_capture_active(fimc))
953 return -EBUSY;
954
955 media_entity_pipeline_start(&p->sensor->entity, p->pipe);
956
957 if (fimc->vid_cap.user_subdev_api) {
958 ret = fimc_pipeline_validate(fimc);
959 if (ret)
960 return ret;
961 }
962 return vb2_streamon(&fimc->vid_cap.vbq, type);
963 }
964
965 static int fimc_cap_streamoff(struct file *file, void *priv,
966 enum v4l2_buf_type type)
967 {
968 struct fimc_dev *fimc = video_drvdata(file);
969 struct v4l2_subdev *sd = fimc->pipeline.sensor;
970 int ret;
971
972 ret = vb2_streamoff(&fimc->vid_cap.vbq, type);
973 if (ret == 0)
974 media_entity_pipeline_stop(&sd->entity);
975 return ret;
976 }
977
978 static int fimc_cap_reqbufs(struct file *file, void *priv,
979 struct v4l2_requestbuffers *reqbufs)
980 {
981 struct fimc_dev *fimc = video_drvdata(file);
982 int ret = vb2_reqbufs(&fimc->vid_cap.vbq, reqbufs);
983
984 if (!ret)
985 fimc->vid_cap.reqbufs_count = reqbufs->count;
986 return ret;
987 }
988
989 static int fimc_cap_querybuf(struct file *file, void *priv,
990 struct v4l2_buffer *buf)
991 {
992 struct fimc_dev *fimc = video_drvdata(file);
993
994 return vb2_querybuf(&fimc->vid_cap.vbq, buf);
995 }
996
997 static int fimc_cap_qbuf(struct file *file, void *priv,
998 struct v4l2_buffer *buf)
999 {
1000 struct fimc_dev *fimc = video_drvdata(file);
1001
1002 return vb2_qbuf(&fimc->vid_cap.vbq, buf);
1003 }
1004
1005 static int fimc_cap_dqbuf(struct file *file, void *priv,
1006 struct v4l2_buffer *buf)
1007 {
1008 struct fimc_dev *fimc = video_drvdata(file);
1009
1010 return vb2_dqbuf(&fimc->vid_cap.vbq, buf, file->f_flags & O_NONBLOCK);
1011 }
1012
1013 static int fimc_cap_cropcap(struct file *file, void *fh,
1014 struct v4l2_cropcap *cr)
1015 {
1016 struct fimc_dev *fimc = video_drvdata(file);
1017 struct fimc_frame *f = &fimc->vid_cap.ctx->s_frame;
1018
1019 if (cr->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1020 return -EINVAL;
1021
1022 cr->bounds.left = 0;
1023 cr->bounds.top = 0;
1024 cr->bounds.width = f->o_width;
1025 cr->bounds.height = f->o_height;
1026 cr->defrect = cr->bounds;
1027
1028 return 0;
1029 }
1030
1031 static int fimc_cap_g_crop(struct file *file, void *fh, struct v4l2_crop *cr)
1032 {
1033 struct fimc_dev *fimc = video_drvdata(file);
1034 struct fimc_frame *f = &fimc->vid_cap.ctx->s_frame;
1035
1036 cr->c.left = f->offs_h;
1037 cr->c.top = f->offs_v;
1038 cr->c.width = f->width;
1039 cr->c.height = f->height;
1040
1041 return 0;
1042 }
1043
1044 static int fimc_cap_s_crop(struct file *file, void *fh, struct v4l2_crop *cr)
1045 {
1046 struct fimc_dev *fimc = video_drvdata(file);
1047 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1048 struct fimc_frame *ff;
1049 unsigned long flags;
1050
1051 fimc_capture_try_crop(ctx, &cr->c, FIMC_SD_PAD_SINK);
1052 ff = &ctx->s_frame;
1053
1054 spin_lock_irqsave(&fimc->slock, flags);
1055 set_frame_crop(ff, cr->c.left, cr->c.top, cr->c.width, cr->c.height);
1056 set_bit(ST_CAPT_APPLY_CFG, &fimc->state);
1057 spin_unlock_irqrestore(&fimc->slock, flags);
1058
1059 return 0;
1060 }
1061
1062 static const struct v4l2_ioctl_ops fimc_capture_ioctl_ops = {
1063 .vidioc_querycap = fimc_vidioc_querycap_capture,
1064
1065 .vidioc_enum_fmt_vid_cap_mplane = fimc_cap_enum_fmt_mplane,
1066 .vidioc_try_fmt_vid_cap_mplane = fimc_cap_try_fmt_mplane,
1067 .vidioc_s_fmt_vid_cap_mplane = fimc_cap_s_fmt_mplane,
1068 .vidioc_g_fmt_vid_cap_mplane = fimc_cap_g_fmt_mplane,
1069
1070 .vidioc_reqbufs = fimc_cap_reqbufs,
1071 .vidioc_querybuf = fimc_cap_querybuf,
1072
1073 .vidioc_qbuf = fimc_cap_qbuf,
1074 .vidioc_dqbuf = fimc_cap_dqbuf,
1075
1076 .vidioc_streamon = fimc_cap_streamon,
1077 .vidioc_streamoff = fimc_cap_streamoff,
1078
1079 .vidioc_g_crop = fimc_cap_g_crop,
1080 .vidioc_s_crop = fimc_cap_s_crop,
1081 .vidioc_cropcap = fimc_cap_cropcap,
1082
1083 .vidioc_enum_input = fimc_cap_enum_input,
1084 .vidioc_s_input = fimc_cap_s_input,
1085 .vidioc_g_input = fimc_cap_g_input,
1086 };
1087
1088 /* Capture subdev media entity operations */
1089 static int fimc_link_setup(struct media_entity *entity,
1090 const struct media_pad *local,
1091 const struct media_pad *remote, u32 flags)
1092 {
1093 struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
1094 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1095
1096 if (media_entity_type(remote->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
1097 return -EINVAL;
1098
1099 if (WARN_ON(fimc == NULL))
1100 return 0;
1101
1102 dbg("%s --> %s, flags: 0x%x. input: 0x%x",
1103 local->entity->name, remote->entity->name, flags,
1104 fimc->vid_cap.input);
1105
1106 if (flags & MEDIA_LNK_FL_ENABLED) {
1107 if (fimc->vid_cap.input != 0)
1108 return -EBUSY;
1109 fimc->vid_cap.input = sd->grp_id;
1110 return 0;
1111 }
1112
1113 fimc->vid_cap.input = 0;
1114 return 0;
1115 }
1116
1117 static const struct media_entity_operations fimc_sd_media_ops = {
1118 .link_setup = fimc_link_setup,
1119 };
1120
1121 /**
1122 * fimc_sensor_notify - v4l2_device notification from a sensor subdev
1123 * @sd: pointer to a subdev generating the notification
1124 * @notification: the notification type, must be S5P_FIMC_TX_END_NOTIFY
1125 * @arg: pointer to an u32 type integer that stores the frame payload value
1126 *
1127 * The End Of Frame notification sent by sensor subdev in its still capture
1128 * mode. If there is only a single VSYNC generated by the sensor at the
1129 * beginning of a frame transmission, FIMC does not issue the LastIrq
1130 * (end of frame) interrupt. And this notification is used to complete the
1131 * frame capture and returning a buffer to user-space. Subdev drivers should
1132 * call this notification from their last 'End of frame capture' interrupt.
1133 */
1134 void fimc_sensor_notify(struct v4l2_subdev *sd, unsigned int notification,
1135 void *arg)
1136 {
1137 struct fimc_sensor_info *sensor;
1138 struct fimc_vid_buffer *buf;
1139 struct fimc_md *fmd;
1140 struct fimc_dev *fimc;
1141 unsigned long flags;
1142
1143 if (sd == NULL)
1144 return;
1145
1146 sensor = v4l2_get_subdev_hostdata(sd);
1147 fmd = entity_to_fimc_mdev(&sd->entity);
1148
1149 spin_lock_irqsave(&fmd->slock, flags);
1150 fimc = sensor ? sensor->host : NULL;
1151
1152 if (fimc && arg && notification == S5P_FIMC_TX_END_NOTIFY &&
1153 test_bit(ST_CAPT_PEND, &fimc->state)) {
1154 unsigned long irq_flags;
1155 spin_lock_irqsave(&fimc->slock, irq_flags);
1156 if (!list_empty(&fimc->vid_cap.active_buf_q)) {
1157 buf = list_entry(fimc->vid_cap.active_buf_q.next,
1158 struct fimc_vid_buffer, list);
1159 vb2_set_plane_payload(&buf->vb, 0, *((u32 *)arg));
1160 }
1161 fimc_capture_irq_handler(fimc, true);
1162 fimc_deactivate_capture(fimc);
1163 spin_unlock_irqrestore(&fimc->slock, irq_flags);
1164 }
1165 spin_unlock_irqrestore(&fmd->slock, flags);
1166 }
1167
1168 static int fimc_subdev_enum_mbus_code(struct v4l2_subdev *sd,
1169 struct v4l2_subdev_fh *fh,
1170 struct v4l2_subdev_mbus_code_enum *code)
1171 {
1172 struct fimc_fmt *fmt;
1173
1174 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, code->index);
1175 if (!fmt)
1176 return -EINVAL;
1177 code->code = fmt->mbus_code;
1178 return 0;
1179 }
1180
1181 static int fimc_subdev_get_fmt(struct v4l2_subdev *sd,
1182 struct v4l2_subdev_fh *fh,
1183 struct v4l2_subdev_format *fmt)
1184 {
1185 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1186 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1187 struct v4l2_mbus_framefmt *mf;
1188 struct fimc_frame *ff;
1189
1190 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1191 mf = v4l2_subdev_get_try_format(fh, fmt->pad);
1192 fmt->format = *mf;
1193 return 0;
1194 }
1195 mf = &fmt->format;
1196 mf->colorspace = V4L2_COLORSPACE_JPEG;
1197 ff = fmt->pad == FIMC_SD_PAD_SINK ? &ctx->s_frame : &ctx->d_frame;
1198
1199 mutex_lock(&fimc->lock);
1200 /* The pixel code is same on both input and output pad */
1201 if (!WARN_ON(ctx->s_frame.fmt == NULL))
1202 mf->code = ctx->s_frame.fmt->mbus_code;
1203 mf->width = ff->f_width;
1204 mf->height = ff->f_height;
1205 mutex_unlock(&fimc->lock);
1206
1207 return 0;
1208 }
1209
1210 static int fimc_subdev_set_fmt(struct v4l2_subdev *sd,
1211 struct v4l2_subdev_fh *fh,
1212 struct v4l2_subdev_format *fmt)
1213 {
1214 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1215 struct v4l2_mbus_framefmt *mf = &fmt->format;
1216 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1217 struct fimc_frame *ff;
1218 struct fimc_fmt *ffmt;
1219
1220 dbg("pad%d: code: 0x%x, %dx%d",
1221 fmt->pad, mf->code, mf->width, mf->height);
1222
1223 if (fmt->pad == FIMC_SD_PAD_SOURCE &&
1224 vb2_is_busy(&fimc->vid_cap.vbq))
1225 return -EBUSY;
1226
1227 mutex_lock(&fimc->lock);
1228 ffmt = fimc_capture_try_format(ctx, &mf->width, &mf->height,
1229 &mf->code, NULL, fmt->pad);
1230 mutex_unlock(&fimc->lock);
1231 mf->colorspace = V4L2_COLORSPACE_JPEG;
1232
1233 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1234 mf = v4l2_subdev_get_try_format(fh, fmt->pad);
1235 *mf = fmt->format;
1236 return 0;
1237 }
1238 fimc_capture_mark_jpeg_xfer(ctx, fimc_fmt_is_jpeg(ffmt->color));
1239
1240 ff = fmt->pad == FIMC_SD_PAD_SINK ?
1241 &ctx->s_frame : &ctx->d_frame;
1242
1243 mutex_lock(&fimc->lock);
1244 set_frame_bounds(ff, mf->width, mf->height);
1245 ff->fmt = ffmt;
1246
1247 /* Reset the crop rectangle if required. */
1248 if (!(fmt->pad == FIMC_SD_PAD_SOURCE && (ctx->state & FIMC_DST_CROP)))
1249 set_frame_crop(ff, 0, 0, mf->width, mf->height);
1250
1251 if (fmt->pad == FIMC_SD_PAD_SINK)
1252 ctx->state &= ~FIMC_DST_CROP;
1253 mutex_unlock(&fimc->lock);
1254 return 0;
1255 }
1256
1257 static int fimc_subdev_get_crop(struct v4l2_subdev *sd,
1258 struct v4l2_subdev_fh *fh,
1259 struct v4l2_subdev_crop *crop)
1260 {
1261 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1262 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1263 struct v4l2_rect *r = &crop->rect;
1264 struct fimc_frame *ff;
1265
1266 if (crop->which == V4L2_SUBDEV_FORMAT_TRY) {
1267 crop->rect = *v4l2_subdev_get_try_crop(fh, crop->pad);
1268 return 0;
1269 }
1270 ff = crop->pad == FIMC_SD_PAD_SINK ?
1271 &ctx->s_frame : &ctx->d_frame;
1272
1273 mutex_lock(&fimc->lock);
1274 r->left = ff->offs_h;
1275 r->top = ff->offs_v;
1276 r->width = ff->width;
1277 r->height = ff->height;
1278 mutex_unlock(&fimc->lock);
1279
1280 dbg("ff:%p, pad%d: l:%d, t:%d, %dx%d, f_w: %d, f_h: %d",
1281 ff, crop->pad, r->left, r->top, r->width, r->height,
1282 ff->f_width, ff->f_height);
1283
1284 return 0;
1285 }
1286
1287 static int fimc_subdev_set_crop(struct v4l2_subdev *sd,
1288 struct v4l2_subdev_fh *fh,
1289 struct v4l2_subdev_crop *crop)
1290 {
1291 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1292 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1293 struct v4l2_rect *r = &crop->rect;
1294 struct fimc_frame *ff;
1295 unsigned long flags;
1296
1297 dbg("(%d,%d)/%dx%d", r->left, r->top, r->width, r->height);
1298
1299 ff = crop->pad == FIMC_SD_PAD_SOURCE ?
1300 &ctx->d_frame : &ctx->s_frame;
1301
1302 mutex_lock(&fimc->lock);
1303 fimc_capture_try_crop(ctx, r, crop->pad);
1304
1305 if (crop->which == V4L2_SUBDEV_FORMAT_TRY) {
1306 mutex_lock(&fimc->lock);
1307 *v4l2_subdev_get_try_crop(fh, crop->pad) = *r;
1308 return 0;
1309 }
1310 spin_lock_irqsave(&fimc->slock, flags);
1311 set_frame_crop(ff, r->left, r->top, r->width, r->height);
1312 if (crop->pad == FIMC_SD_PAD_SOURCE)
1313 ctx->state |= FIMC_DST_CROP;
1314
1315 set_bit(ST_CAPT_APPLY_CFG, &fimc->state);
1316 spin_unlock_irqrestore(&fimc->slock, flags);
1317
1318 dbg("pad%d: (%d,%d)/%dx%d", crop->pad, r->left, r->top,
1319 r->width, r->height);
1320
1321 mutex_unlock(&fimc->lock);
1322 return 0;
1323 }
1324
1325 static struct v4l2_subdev_pad_ops fimc_subdev_pad_ops = {
1326 .enum_mbus_code = fimc_subdev_enum_mbus_code,
1327 .get_fmt = fimc_subdev_get_fmt,
1328 .set_fmt = fimc_subdev_set_fmt,
1329 .get_crop = fimc_subdev_get_crop,
1330 .set_crop = fimc_subdev_set_crop,
1331 };
1332
1333 static struct v4l2_subdev_ops fimc_subdev_ops = {
1334 .pad = &fimc_subdev_pad_ops,
1335 };
1336
1337 static int fimc_create_capture_subdev(struct fimc_dev *fimc,
1338 struct v4l2_device *v4l2_dev)
1339 {
1340 struct v4l2_subdev *sd;
1341 int ret;
1342
1343 sd = kzalloc(sizeof(*sd), GFP_KERNEL);
1344 if (!sd)
1345 return -ENOMEM;
1346
1347 v4l2_subdev_init(sd, &fimc_subdev_ops);
1348 sd->flags = V4L2_SUBDEV_FL_HAS_DEVNODE;
1349 snprintf(sd->name, sizeof(sd->name), "FIMC.%d", fimc->pdev->id);
1350
1351 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
1352 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
1353 ret = media_entity_init(&sd->entity, FIMC_SD_PADS_NUM,
1354 fimc->vid_cap.sd_pads, 0);
1355 if (ret)
1356 goto me_err;
1357 ret = v4l2_device_register_subdev(v4l2_dev, sd);
1358 if (ret)
1359 goto sd_err;
1360
1361 fimc->vid_cap.subdev = sd;
1362 v4l2_set_subdevdata(sd, fimc);
1363 sd->entity.ops = &fimc_sd_media_ops;
1364 return 0;
1365 sd_err:
1366 media_entity_cleanup(&sd->entity);
1367 me_err:
1368 kfree(sd);
1369 return ret;
1370 }
1371
1372 static void fimc_destroy_capture_subdev(struct fimc_dev *fimc)
1373 {
1374 struct v4l2_subdev *sd = fimc->vid_cap.subdev;
1375
1376 if (!sd)
1377 return;
1378 media_entity_cleanup(&sd->entity);
1379 v4l2_device_unregister_subdev(sd);
1380 kfree(sd);
1381 fimc->vid_cap.subdev = NULL;
1382 }
1383
1384 /* Set default format at the sensor and host interface */
1385 static int fimc_capture_set_default_format(struct fimc_dev *fimc)
1386 {
1387 struct v4l2_format fmt = {
1388 .type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
1389 .fmt.pix_mp = {
1390 .width = 640,
1391 .height = 480,
1392 .pixelformat = V4L2_PIX_FMT_YUYV,
1393 .field = V4L2_FIELD_NONE,
1394 .colorspace = V4L2_COLORSPACE_JPEG,
1395 },
1396 };
1397
1398 return fimc_capture_set_format(fimc, &fmt);
1399 }
1400
1401 /* fimc->lock must be already initialized */
1402 int fimc_register_capture_device(struct fimc_dev *fimc,
1403 struct v4l2_device *v4l2_dev)
1404 {
1405 struct video_device *vfd;
1406 struct fimc_vid_cap *vid_cap;
1407 struct fimc_ctx *ctx;
1408 struct vb2_queue *q;
1409 int ret = -ENOMEM;
1410
1411 ctx = kzalloc(sizeof *ctx, GFP_KERNEL);
1412 if (!ctx)
1413 return -ENOMEM;
1414
1415 ctx->fimc_dev = fimc;
1416 ctx->in_path = FIMC_CAMERA;
1417 ctx->out_path = FIMC_DMA;
1418 ctx->state = FIMC_CTX_CAP;
1419 ctx->s_frame.fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, 0);
1420 ctx->d_frame.fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, 0);
1421
1422 vfd = video_device_alloc();
1423 if (!vfd) {
1424 v4l2_err(v4l2_dev, "Failed to allocate video device\n");
1425 goto err_vd_alloc;
1426 }
1427
1428 snprintf(vfd->name, sizeof(vfd->name), "%s.capture",
1429 dev_name(&fimc->pdev->dev));
1430
1431 vfd->fops = &fimc_capture_fops;
1432 vfd->ioctl_ops = &fimc_capture_ioctl_ops;
1433 vfd->v4l2_dev = v4l2_dev;
1434 vfd->minor = -1;
1435 vfd->release = video_device_release;
1436 vfd->lock = &fimc->lock;
1437 video_set_drvdata(vfd, fimc);
1438
1439 vid_cap = &fimc->vid_cap;
1440 vid_cap->vfd = vfd;
1441 vid_cap->active_buf_cnt = 0;
1442 vid_cap->reqbufs_count = 0;
1443 vid_cap->refcnt = 0;
1444
1445 INIT_LIST_HEAD(&vid_cap->pending_buf_q);
1446 INIT_LIST_HEAD(&vid_cap->active_buf_q);
1447 spin_lock_init(&ctx->slock);
1448 vid_cap->ctx = ctx;
1449
1450 q = &fimc->vid_cap.vbq;
1451 memset(q, 0, sizeof(*q));
1452 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1453 q->io_modes = VB2_MMAP | VB2_USERPTR;
1454 q->drv_priv = fimc->vid_cap.ctx;
1455 q->ops = &fimc_capture_qops;
1456 q->mem_ops = &vb2_dma_contig_memops;
1457 q->buf_struct_size = sizeof(struct fimc_vid_buffer);
1458
1459 vb2_queue_init(q);
1460
1461 fimc->vid_cap.vd_pad.flags = MEDIA_PAD_FL_SINK;
1462 ret = media_entity_init(&vfd->entity, 1, &fimc->vid_cap.vd_pad, 0);
1463 if (ret)
1464 goto err_ent;
1465 ret = fimc_create_capture_subdev(fimc, v4l2_dev);
1466 if (ret)
1467 goto err_sd_reg;
1468
1469 vfd->ctrl_handler = &ctx->ctrl_handler;
1470 return 0;
1471
1472 err_sd_reg:
1473 media_entity_cleanup(&vfd->entity);
1474 err_ent:
1475 video_device_release(vfd);
1476 err_vd_alloc:
1477 kfree(ctx);
1478 return ret;
1479 }
1480
1481 void fimc_unregister_capture_device(struct fimc_dev *fimc)
1482 {
1483 struct video_device *vfd = fimc->vid_cap.vfd;
1484
1485 if (vfd) {
1486 media_entity_cleanup(&vfd->entity);
1487 /* Can also be called if video device was
1488 not registered */
1489 video_unregister_device(vfd);
1490 }
1491 fimc_destroy_capture_subdev(fimc);
1492 kfree(fimc->vid_cap.ctx);
1493 fimc->vid_cap.ctx = NULL;
1494 }
Linux kernel - Deliverables
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