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[media] s5p-fimc: Use video entity for marking media pipeline as streaming
[deliverable/linux.git] / drivers / media / platform / s5p-fimc / fimc-m2m.c
CommitLineData
97d97422
SN		 1/*
2 * Samsung S5P/EXYNOS4 SoC series FIMC (video postprocessor) driver
3 *
81619ce1
SN		 4 * Copyright (C) 2012 - 2013 Samsung Electronics Co., Ltd.
5 * Sylwester Nawrocki <s.nawrocki@samsung.com>
97d97422
SN		 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 as published
9 * by the Free Software Foundation, either version 2 of the License,
10 * or (at your option) any later version.
11 */
12
13#include <linux/module.h>
14#include <linux/kernel.h>
15#include <linux/types.h>
16#include <linux/errno.h>
17#include <linux/bug.h>
18#include <linux/interrupt.h>
19#include <linux/device.h>
20#include <linux/platform_device.h>
21#include <linux/pm_runtime.h>
22#include <linux/list.h>
23#include <linux/io.h>
24#include <linux/slab.h>
25#include <linux/clk.h>
26#include <media/v4l2-ioctl.h>
27#include <media/videobuf2-core.h>
28#include <media/videobuf2-dma-contig.h>
29
30#include "fimc-core.h"
c83a1ff0 31#include "fimc-reg.h"
97d97422
SN		 32#include "fimc-mdevice.h"
33
34
35static unsigned int get_m2m_fmt_flags(unsigned int stream_type)
36{
37 if (stream_type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
38 return FMT_FLAGS_M2M_IN;
39 else
40 return FMT_FLAGS_M2M_OUT;
41}
42
43void fimc_m2m_job_finish(struct fimc_ctx *ctx, int vb_state)
44{
45 struct vb2_buffer *src_vb, *dst_vb;
46
47 if (!ctx || !ctx->m2m_ctx)
48 return;
49
50 src_vb = v4l2_m2m_src_buf_remove(ctx->m2m_ctx);
51 dst_vb = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx);
52
53 if (src_vb && dst_vb) {
54 v4l2_m2m_buf_done(src_vb, vb_state);
55 v4l2_m2m_buf_done(dst_vb, vb_state);
56 v4l2_m2m_job_finish(ctx->fimc_dev->m2m.m2m_dev,
57 ctx->m2m_ctx);
58 }
59}
60
61/* Complete the transaction which has been scheduled for execution. */
62static int fimc_m2m_shutdown(struct fimc_ctx *ctx)
63{
64 struct fimc_dev *fimc = ctx->fimc_dev;
65 int ret;
66
67 if (!fimc_m2m_pending(fimc))
68 return 0;
69
70 fimc_ctx_state_set(FIMC_CTX_SHUT, ctx);
71
72 ret = wait_event_timeout(fimc->irq_queue,
73 !fimc_ctx_state_is_set(FIMC_CTX_SHUT, ctx),
74 FIMC_SHUTDOWN_TIMEOUT);
75
76 return ret == 0 ? -ETIMEDOUT : ret;
77}
78
79static int start_streaming(struct vb2_queue *q, unsigned int count)
80{
81 struct fimc_ctx *ctx = q->drv_priv;
82 int ret;
83
84 ret = pm_runtime_get_sync(&ctx->fimc_dev->pdev->dev);
85 return ret > 0 ? 0 : ret;
86}
87
88static int stop_streaming(struct vb2_queue *q)
89{
90 struct fimc_ctx *ctx = q->drv_priv;
91 int ret;
92
93 ret = fimc_m2m_shutdown(ctx);
94 if (ret == -ETIMEDOUT)
95 fimc_m2m_job_finish(ctx, VB2_BUF_STATE_ERROR);
96
97 pm_runtime_put(&ctx->fimc_dev->pdev->dev);
98 return 0;
99}
100
101static void fimc_device_run(void *priv)
102{
103 struct vb2_buffer *vb = NULL;
104 struct fimc_ctx *ctx = priv;
105 struct fimc_frame *sf, *df;
106 struct fimc_dev *fimc;
107 unsigned long flags;
a63bafd8 108 int ret;
97d97422
SN		 109
110 if (WARN(!ctx, "Null context\n"))
111 return;
112
113 fimc = ctx->fimc_dev;
114 spin_lock_irqsave(&fimc->slock, flags);
115
116 set_bit(ST_M2M_PEND, &fimc->state);
117 sf = &ctx->s_frame;
118 df = &ctx->d_frame;
119
120 if (ctx->state & FIMC_PARAMS) {
121 /* Prepare the DMA offsets for scaler */
122 fimc_prepare_dma_offset(ctx, sf);
123 fimc_prepare_dma_offset(ctx, df);
124 }
125
126 vb = v4l2_m2m_next_src_buf(ctx->m2m_ctx);
127 ret = fimc_prepare_addr(ctx, vb, sf, &sf->paddr);
128 if (ret)
129 goto dma_unlock;
130
131 vb = v4l2_m2m_next_dst_buf(ctx->m2m_ctx);
132 ret = fimc_prepare_addr(ctx, vb, df, &df->paddr);
133 if (ret)
134 goto dma_unlock;
135
136 /* Reconfigure hardware if the context has changed. */
137 if (fimc->m2m.ctx != ctx) {
138 ctx->state |= FIMC_PARAMS;
139 fimc->m2m.ctx = ctx;
140 }
141
142 if (ctx->state & FIMC_PARAMS) {
143 fimc_set_yuv_order(ctx);
144 fimc_hw_set_input_path(ctx);
145 fimc_hw_set_in_dma(ctx);
146 ret = fimc_set_scaler_info(ctx);
147 if (ret)
148 goto dma_unlock;
149 fimc_hw_set_prescaler(ctx);
150 fimc_hw_set_mainscaler(ctx);
151 fimc_hw_set_target_format(ctx);
152 fimc_hw_set_rotation(ctx);
9448ab7d 153 fimc_hw_set_effect(ctx);
97d97422
SN		 154 fimc_hw_set_out_dma(ctx);
155 if (fimc->variant->has_alpha)
156 fimc_hw_set_rgb_alpha(ctx);
157 fimc_hw_set_output_path(ctx);
158 }
159 fimc_hw_set_input_addr(fimc, &sf->paddr);
160 fimc_hw_set_output_addr(fimc, &df->paddr, -1);
161
162 fimc_activate_capture(ctx);
81619ce1 163 ctx->state &= (FIMC_CTX_M2M | FIMC_CTX_CAP);
97d97422
SN		 164 fimc_hw_activate_input_dma(fimc, true);
165
166dma_unlock:
167 spin_unlock_irqrestore(&fimc->slock, flags);
168}
169
170static void fimc_job_abort(void *priv)
171{
172 fimc_m2m_shutdown(priv);
173}
174
175static int fimc_queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt,
176 unsigned int *num_buffers, unsigned int *num_planes,
177 unsigned int sizes[], void *allocators[])
178{
179 struct fimc_ctx *ctx = vb2_get_drv_priv(vq);
180 struct fimc_frame *f;
181 int i;
182
183 f = ctx_get_frame(ctx, vq->type);
184 if (IS_ERR(f))
185 return PTR_ERR(f);
186 /*
187 * Return number of non-contigous planes (plane buffers)
188 * depending on the configured color format.
189 */
190 if (!f->fmt)
191 return -EINVAL;
192
193 *num_planes = f->fmt->memplanes;
194 for (i = 0; i < f->fmt->memplanes; i++) {
195 sizes[i] = (f->f_width * f->f_height * f->fmt->depth[i]) / 8;
196 allocators[i] = ctx->fimc_dev->alloc_ctx;
197 }
198 return 0;
199}
200
201static int fimc_buf_prepare(struct vb2_buffer *vb)
202{
203 struct fimc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
204 struct fimc_frame *frame;
205 int i;
206
207 frame = ctx_get_frame(ctx, vb->vb2_queue->type);
208 if (IS_ERR(frame))
209 return PTR_ERR(frame);
210
211 for (i = 0; i < frame->fmt->memplanes; i++)
212 vb2_set_plane_payload(vb, i, frame->payload[i]);
213
214 return 0;
215}
216
217static void fimc_buf_queue(struct vb2_buffer *vb)
218{
219 struct fimc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
220
221 dbg("ctx: %p, ctx->state: 0x%x", ctx, ctx->state);
222
223 if (ctx->m2m_ctx)
224 v4l2_m2m_buf_queue(ctx->m2m_ctx, vb);
225}
226
227static void fimc_lock(struct vb2_queue *vq)
228{
229 struct fimc_ctx *ctx = vb2_get_drv_priv(vq);
230 mutex_lock(&ctx->fimc_dev->lock);
231}
232
233static void fimc_unlock(struct vb2_queue *vq)
234{
235 struct fimc_ctx *ctx = vb2_get_drv_priv(vq);
236 mutex_unlock(&ctx->fimc_dev->lock);
237}
238
239static struct vb2_ops fimc_qops = {
240 .queue_setup = fimc_queue_setup,
241 .buf_prepare = fimc_buf_prepare,
242 .buf_queue = fimc_buf_queue,
243 .wait_prepare = fimc_unlock,
244 .wait_finish = fimc_lock,
245 .stop_streaming = stop_streaming,
246 .start_streaming = start_streaming,
247};
248
249/*
250 * V4L2 ioctl handlers
251 */
252static int fimc_m2m_querycap(struct file *file, void *fh,
253 struct v4l2_capability *cap)
254{
255 struct fimc_ctx *ctx = fh_to_ctx(fh);
256 struct fimc_dev *fimc = ctx->fimc_dev;
257
258 strncpy(cap->driver, fimc->pdev->name, sizeof(cap->driver) - 1);
259 strncpy(cap->card, fimc->pdev->name, sizeof(cap->card) - 1);
260 cap->bus_info[0] = 0;
f0476a83
SN		 261 /*
262 * This is only a mem-to-mem video device. The capture and output
263 * device capability flags are left only for backward compatibility
264 * and are scheduled for removal.
265 */
266 cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_M2M_MPLANE |
97d97422
SN		 267 V4L2_CAP_VIDEO_CAPTURE_MPLANE | V4L2_CAP_VIDEO_OUTPUT_MPLANE;
268
269 return 0;
270}
271
272static int fimc_m2m_enum_fmt_mplane(struct file *file, void *priv,
273 struct v4l2_fmtdesc *f)
274{
275 struct fimc_fmt *fmt;
276
277 fmt = fimc_find_format(NULL, NULL, get_m2m_fmt_flags(f->type),
278 f->index);
279 if (!fmt)
280 return -EINVAL;
281
282 strncpy(f->description, fmt->name, sizeof(f->description) - 1);
283 f->pixelformat = fmt->fourcc;
284 return 0;
285}
286
287static int fimc_m2m_g_fmt_mplane(struct file *file, void *fh,
288 struct v4l2_format *f)
289{
290 struct fimc_ctx *ctx = fh_to_ctx(fh);
291 struct fimc_frame *frame = ctx_get_frame(ctx, f->type);
292
293 if (IS_ERR(frame))
294 return PTR_ERR(frame);
295
fa8880be
SN		 296 __fimc_get_format(frame, f);
297 return 0;
97d97422
SN		 298}
299
300static int fimc_try_fmt_mplane(struct fimc_ctx *ctx, struct v4l2_format *f)
301{
302 struct fimc_dev *fimc = ctx->fimc_dev;
405f230c 303 const struct fimc_variant *variant = fimc->variant;
97d97422
SN		 304 struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
305 struct fimc_fmt *fmt;
306 u32 max_w, mod_x, mod_y;
307
308 if (!IS_M2M(f->type))
309 return -EINVAL;
310
97d97422
SN		 311 fmt = fimc_find_format(&pix->pixelformat, NULL,
312 get_m2m_fmt_flags(f->type), 0);
313 if (WARN(fmt == NULL, "Pixel format lookup failed"))
314 return -EINVAL;
315
316 if (pix->field == V4L2_FIELD_ANY)
317 pix->field = V4L2_FIELD_NONE;
318 else if (pix->field != V4L2_FIELD_NONE)
319 return -EINVAL;
320
321 if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
322 max_w = variant->pix_limit->scaler_dis_w;
323 mod_x = ffs(variant->min_inp_pixsize) - 1;
324 } else {
325 max_w = variant->pix_limit->out_rot_dis_w;
326 mod_x = ffs(variant->min_out_pixsize) - 1;
327 }
328
329 if (tiled_fmt(fmt)) {
330 mod_x = 6; /* 64 x 32 pixels tile */
331 mod_y = 5;
332 } else {
333 if (variant->min_vsize_align == 1)
334 mod_y = fimc_fmt_is_rgb(fmt->color) ? 0 : 1;
335 else
336 mod_y = ffs(variant->min_vsize_align) - 1;
337 }
338
339 v4l_bound_align_image(&pix->width, 16, max_w, mod_x,
340 &pix->height, 8, variant->pix_limit->scaler_dis_w, mod_y, 0);
341
342 fimc_adjust_mplane_format(fmt, pix->width, pix->height, &f->fmt.pix_mp);
343 return 0;
344}
345
346static int fimc_m2m_try_fmt_mplane(struct file *file, void *fh,
347 struct v4l2_format *f)
348{
349 struct fimc_ctx *ctx = fh_to_ctx(fh);
97d97422
SN		 350 return fimc_try_fmt_mplane(ctx, f);
351}
352
81619ce1
SN		 353static void __set_frame_format(struct fimc_frame *frame, struct fimc_fmt *fmt,
354 struct v4l2_pix_format_mplane *pixm)
355{
356 int i;
357
358 for (i = 0; i < fmt->colplanes; i++) {
359 frame->bytesperline[i] = pixm->plane_fmt[i].bytesperline;
360 frame->payload[i] = pixm->plane_fmt[i].sizeimage;
361 }
362
363 frame->f_width = pixm->width;
364 frame->f_height = pixm->height;
365 frame->o_width = pixm->width;
366 frame->o_height = pixm->height;
367 frame->width = pixm->width;
368 frame->height = pixm->height;
369 frame->offs_h = 0;
370 frame->offs_v = 0;
371 frame->fmt = fmt;
372}
373
97d97422
SN		 374static int fimc_m2m_s_fmt_mplane(struct file *file, void *fh,
375 struct v4l2_format *f)
376{
377 struct fimc_ctx *ctx = fh_to_ctx(fh);
378 struct fimc_dev *fimc = ctx->fimc_dev;
81619ce1 379 struct fimc_fmt *fmt;
97d97422
SN		 380 struct vb2_queue *vq;
381 struct fimc_frame *frame;
81619ce1 382 int ret;
97d97422
SN		 383
384 ret = fimc_try_fmt_mplane(ctx, f);
385 if (ret)
386 return ret;
387
388 vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type);
389
390 if (vb2_is_busy(vq)) {
bbc5296f 391 v4l2_err(&fimc->m2m.vfd, "queue (%d) busy\n", f->type);
97d97422
SN		 392 return -EBUSY;
393 }
394
395 if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
396 frame = &ctx->s_frame;
397 else
398 frame = &ctx->d_frame;
399
81619ce1
SN		 400 fmt = fimc_find_format(&f->fmt.pix_mp.pixelformat, NULL,
401 get_m2m_fmt_flags(f->type), 0);
402 if (!fmt)
97d97422
SN		 403 return -EINVAL;
404
81619ce1
SN		 405 __set_frame_format(frame, fmt, &f->fmt.pix_mp);
406
97d97422
SN		 407 /* Update RGB Alpha control state and value range */
408 fimc_alpha_ctrl_update(ctx);
409
97d97422
SN		 410 return 0;
411}
412
413static int fimc_m2m_reqbufs(struct file *file, void *fh,
414 struct v4l2_requestbuffers *reqbufs)
415{
416 struct fimc_ctx *ctx = fh_to_ctx(fh);
97d97422
SN		 417 return v4l2_m2m_reqbufs(file, ctx->m2m_ctx, reqbufs);
418}
419
420static int fimc_m2m_querybuf(struct file *file, void *fh,
421 struct v4l2_buffer *buf)
422{
423 struct fimc_ctx *ctx = fh_to_ctx(fh);
97d97422
SN		 424 return v4l2_m2m_querybuf(file, ctx->m2m_ctx, buf);
425}
426
427static int fimc_m2m_qbuf(struct file *file, void *fh,
428 struct v4l2_buffer *buf)
429{
430 struct fimc_ctx *ctx = fh_to_ctx(fh);
97d97422
SN		 431 return v4l2_m2m_qbuf(file, ctx->m2m_ctx, buf);
432}
433
434static int fimc_m2m_dqbuf(struct file *file, void *fh,
435 struct v4l2_buffer *buf)
436{
437 struct fimc_ctx *ctx = fh_to_ctx(fh);
97d97422
SN		 438 return v4l2_m2m_dqbuf(file, ctx->m2m_ctx, buf);
439}
440
b28d61b6
TS		 441static int fimc_m2m_expbuf(struct file *file, void *fh,
442 struct v4l2_exportbuffer *eb)
443{
444 struct fimc_ctx *ctx = fh_to_ctx(fh);
b28d61b6
TS		 445 return v4l2_m2m_expbuf(file, ctx->m2m_ctx, eb);
446}
447
448
97d97422
SN		 449static int fimc_m2m_streamon(struct file *file, void *fh,
450 enum v4l2_buf_type type)
451{
452 struct fimc_ctx *ctx = fh_to_ctx(fh);
97d97422
SN		 453 return v4l2_m2m_streamon(file, ctx->m2m_ctx, type);
454}
455
456static int fimc_m2m_streamoff(struct file *file, void *fh,
457 enum v4l2_buf_type type)
458{
459 struct fimc_ctx *ctx = fh_to_ctx(fh);
97d97422
SN		 460 return v4l2_m2m_streamoff(file, ctx->m2m_ctx, type);
461}
462
463static int fimc_m2m_cropcap(struct file *file, void *fh,
464 struct v4l2_cropcap *cr)
465{
466 struct fimc_ctx *ctx = fh_to_ctx(fh);
467 struct fimc_frame *frame;
468
469 frame = ctx_get_frame(ctx, cr->type);
470 if (IS_ERR(frame))
471 return PTR_ERR(frame);
472
473 cr->bounds.left = 0;
474 cr->bounds.top = 0;
475 cr->bounds.width = frame->o_width;
476 cr->bounds.height = frame->o_height;
477 cr->defrect = cr->bounds;
478
479 return 0;
480}
481
482static int fimc_m2m_g_crop(struct file *file, void *fh, struct v4l2_crop *cr)
483{
484 struct fimc_ctx *ctx = fh_to_ctx(fh);
485 struct fimc_frame *frame;
486
487 frame = ctx_get_frame(ctx, cr->type);
488 if (IS_ERR(frame))
489 return PTR_ERR(frame);
490
491 cr->c.left = frame->offs_h;
492 cr->c.top = frame->offs_v;
493 cr->c.width = frame->width;
494 cr->c.height = frame->height;
495
496 return 0;
497}
498
499static int fimc_m2m_try_crop(struct fimc_ctx *ctx, struct v4l2_crop *cr)
500{
501 struct fimc_dev *fimc = ctx->fimc_dev;
502 struct fimc_frame *f;
503 u32 min_size, halign, depth = 0;
504 int i;
505
506 if (cr->c.top < 0 || cr->c.left < 0) {
bbc5296f 507 v4l2_err(&fimc->m2m.vfd,
97d97422
SN		 508 "doesn't support negative values for top & left\n");
509 return -EINVAL;
510 }
511 if (cr->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
512 f = &ctx->d_frame;
513 else if (cr->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
514 f = &ctx->s_frame;
515 else
516 return -EINVAL;
517
518 min_size = (f == &ctx->s_frame) ?
519 fimc->variant->min_inp_pixsize : fimc->variant->min_out_pixsize;
520
521 /* Get pixel alignment constraints. */
522 if (fimc->variant->min_vsize_align == 1)
523 halign = fimc_fmt_is_rgb(f->fmt->color) ? 0 : 1;
524 else
525 halign = ffs(fimc->variant->min_vsize_align) - 1;
526
527 for (i = 0; i < f->fmt->colplanes; i++)
528 depth += f->fmt->depth[i];
529
530 v4l_bound_align_image(&cr->c.width, min_size, f->o_width,
531 ffs(min_size) - 1,
532 &cr->c.height, min_size, f->o_height,
533 halign, 64/(ALIGN(depth, 8)));
534
535 /* adjust left/top if cropping rectangle is out of bounds */
536 if (cr->c.left + cr->c.width > f->o_width)
537 cr->c.left = f->o_width - cr->c.width;
538 if (cr->c.top + cr->c.height > f->o_height)
539 cr->c.top = f->o_height - cr->c.height;
540
541 cr->c.left = round_down(cr->c.left, min_size);
542 cr->c.top = round_down(cr->c.top, fimc->variant->hor_offs_align);
543
544 dbg("l:%d, t:%d, w:%d, h:%d, f_w: %d, f_h: %d",
545 cr->c.left, cr->c.top, cr->c.width, cr->c.height,
546 f->f_width, f->f_height);
547
548 return 0;
549}
550
24c54f77 551static int fimc_m2m_s_crop(struct file *file, void *fh, const struct v4l2_crop *crop)
97d97422
SN		 552{
553 struct fimc_ctx *ctx = fh_to_ctx(fh);
554 struct fimc_dev *fimc = ctx->fimc_dev;
24c54f77 555 struct v4l2_crop cr = *crop;
97d97422
SN		 556 struct fimc_frame *f;
557 int ret;
558
24c54f77 559 ret = fimc_m2m_try_crop(ctx, &cr);
97d97422
SN		 560 if (ret)
561 return ret;
562
24c54f77 563 f = (cr.type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) ?
97d97422
SN		 564 &ctx->s_frame : &ctx->d_frame;
565
566 /* Check to see if scaling ratio is within supported range */
81619ce1
SN		 567 if (cr.type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
568 ret = fimc_check_scaler_ratio(ctx, cr.c.width,
569 cr.c.height, ctx->d_frame.width,
570 ctx->d_frame.height, ctx->rotation);
571 } else {
572 ret = fimc_check_scaler_ratio(ctx, ctx->s_frame.width,
573 ctx->s_frame.height, cr.c.width,
574 cr.c.height, ctx->rotation);
575 }
576 if (ret) {
577 v4l2_err(&fimc->m2m.vfd, "Out of scaler range\n");
578 return -EINVAL;
97d97422
SN		 579 }
580
24c54f77
HV		 581 f->offs_h = cr.c.left;
582 f->offs_v = cr.c.top;
583 f->width = cr.c.width;
584 f->height = cr.c.height;
97d97422
SN		 585
586 fimc_ctx_state_set(FIMC_PARAMS, ctx);
587
588 return 0;
589}
590
591static const struct v4l2_ioctl_ops fimc_m2m_ioctl_ops = {
592 .vidioc_querycap = fimc_m2m_querycap,
593 .vidioc_enum_fmt_vid_cap_mplane = fimc_m2m_enum_fmt_mplane,
594 .vidioc_enum_fmt_vid_out_mplane = fimc_m2m_enum_fmt_mplane,
595 .vidioc_g_fmt_vid_cap_mplane = fimc_m2m_g_fmt_mplane,
596 .vidioc_g_fmt_vid_out_mplane = fimc_m2m_g_fmt_mplane,
597 .vidioc_try_fmt_vid_cap_mplane = fimc_m2m_try_fmt_mplane,
598 .vidioc_try_fmt_vid_out_mplane = fimc_m2m_try_fmt_mplane,
599 .vidioc_s_fmt_vid_cap_mplane = fimc_m2m_s_fmt_mplane,
600 .vidioc_s_fmt_vid_out_mplane = fimc_m2m_s_fmt_mplane,
601 .vidioc_reqbufs = fimc_m2m_reqbufs,
602 .vidioc_querybuf = fimc_m2m_querybuf,
603 .vidioc_qbuf = fimc_m2m_qbuf,
604 .vidioc_dqbuf = fimc_m2m_dqbuf,
b28d61b6 605 .vidioc_expbuf = fimc_m2m_expbuf,
97d97422
SN		 606 .vidioc_streamon = fimc_m2m_streamon,
607 .vidioc_streamoff = fimc_m2m_streamoff,
608 .vidioc_g_crop = fimc_m2m_g_crop,
609 .vidioc_s_crop = fimc_m2m_s_crop,
610 .vidioc_cropcap = fimc_m2m_cropcap
611
612};
613
614static int queue_init(void *priv, struct vb2_queue *src_vq,
615 struct vb2_queue *dst_vq)
616{
617 struct fimc_ctx *ctx = priv;
618 int ret;
619
97d97422 620 src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
9bd09fd7 621 src_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
97d97422
SN		 622 src_vq->drv_priv = ctx;
623 src_vq->ops = &fimc_qops;
624 src_vq->mem_ops = &vb2_dma_contig_memops;
625 src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
626
627 ret = vb2_queue_init(src_vq);
628 if (ret)
629 return ret;
630
97d97422 631 dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
9bd09fd7 632 dst_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
97d97422
SN		 633 dst_vq->drv_priv = ctx;
634 dst_vq->ops = &fimc_qops;
635 dst_vq->mem_ops = &vb2_dma_contig_memops;
636 dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
637
638 return vb2_queue_init(dst_vq);
639}
640
81619ce1
SN		 641static int fimc_m2m_set_default_format(struct fimc_ctx *ctx)
642{
643 struct v4l2_pix_format_mplane pixm = {
644 .pixelformat = V4L2_PIX_FMT_RGB32,
645 .width = 800,
646 .height = 600,
647 .plane_fmt[0] = {
648 .bytesperline = 800 * 4,
649 .sizeimage = 800 * 4 * 600,
650 },
651 };
652 struct fimc_fmt *fmt;
653
654 fmt = fimc_find_format(&pixm.pixelformat, NULL, FMT_FLAGS_M2M, 0);
655 if (!fmt)
656 return -EINVAL;
657
658 __set_frame_format(&ctx->s_frame, fmt, &pixm);
659 __set_frame_format(&ctx->d_frame, fmt, &pixm);
660
661 return 0;
662}
663
97d97422
SN		 664static int fimc_m2m_open(struct file *file)
665{
666 struct fimc_dev *fimc = video_drvdata(file);
667 struct fimc_ctx *ctx;
c2d430af 668 int ret = -EBUSY;
97d97422
SN		 669
670 dbg("pid: %d, state: 0x%lx, refcnt: %d",
671 task_pid_nr(current), fimc->state, fimc->vid_cap.refcnt);
672
c2d430af
SN		 673 if (mutex_lock_interruptible(&fimc->lock))
674 return -ERESTARTSYS;
97d97422
SN		 675 /*
676 * Return if the corresponding video capture node
677 * is already opened.
678 */
679 if (fimc->vid_cap.refcnt > 0)
c2d430af 680 goto unlock;
97d97422 681
26ee7f47 682 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
c2d430af
SN		 683 if (!ctx) {
684 ret = -ENOMEM;
685 goto unlock;
686 }
bbc5296f 687 v4l2_fh_init(&ctx->fh, &fimc->m2m.vfd);
97d97422
SN		 688 ctx->fimc_dev = fimc;
689
690 /* Default color format */
691 ctx->s_frame.fmt = fimc_get_format(0);
692 ctx->d_frame.fmt = fimc_get_format(0);
693
694 ret = fimc_ctrls_create(ctx);
695 if (ret)
696 goto error_fh;
697
698 /* Use separate control handler per file handle */
9448ab7d 699 ctx->fh.ctrl_handler = &ctx->ctrls.handler;
97d97422
SN		 700 file->private_data = &ctx->fh;
701 v4l2_fh_add(&ctx->fh);
702
703 /* Setup the device context for memory-to-memory mode */
704 ctx->state = FIMC_CTX_M2M;
705 ctx->flags = 0;
3d112d9a
SN		 706 ctx->in_path = FIMC_IO_DMA;
707 ctx->out_path = FIMC_IO_DMA;
81619ce1 708 ctx->scaler.enabled = 1;
97d97422
SN		 709
710 ctx->m2m_ctx = v4l2_m2m_ctx_init(fimc->m2m.m2m_dev, ctx, queue_init);
711 if (IS_ERR(ctx->m2m_ctx)) {
712 ret = PTR_ERR(ctx->m2m_ctx);
713 goto error_c;
714 }
715
716 if (fimc->m2m.refcnt++ == 0)
717 set_bit(ST_M2M_RUN, &fimc->state);
c2d430af 718
81619ce1
SN		 719 ret = fimc_m2m_set_default_format(ctx);
720 if (ret < 0)
721 goto error_m2m_ctx;
722
c2d430af 723 mutex_unlock(&fimc->lock);
97d97422
SN		 724 return 0;
725
81619ce1
SN		 726error_m2m_ctx:
727 v4l2_m2m_ctx_release(ctx->m2m_ctx);
97d97422
SN		 728error_c:
729 fimc_ctrls_delete(ctx);
730error_fh:
731 v4l2_fh_del(&ctx->fh);
732 v4l2_fh_exit(&ctx->fh);
733 kfree(ctx);
c2d430af
SN		 734unlock:
735 mutex_unlock(&fimc->lock);
97d97422
SN		 736 return ret;
737}
738
739static int fimc_m2m_release(struct file *file)
740{
741 struct fimc_ctx *ctx = fh_to_ctx(file->private_data);
742 struct fimc_dev *fimc = ctx->fimc_dev;
743
744 dbg("pid: %d, state: 0x%lx, refcnt= %d",
745 task_pid_nr(current), fimc->state, fimc->m2m.refcnt);
746
ba6b372c 747 mutex_lock(&fimc->lock);
c2d430af 748
97d97422
SN		 749 v4l2_m2m_ctx_release(ctx->m2m_ctx);
750 fimc_ctrls_delete(ctx);
751 v4l2_fh_del(&ctx->fh);
752 v4l2_fh_exit(&ctx->fh);
753
754 if (--fimc->m2m.refcnt <= 0)
755 clear_bit(ST_M2M_RUN, &fimc->state);
756 kfree(ctx);
c2d430af
SN		 757
758 mutex_unlock(&fimc->lock);
97d97422
SN		 759 return 0;
760}
761
762static unsigned int fimc_m2m_poll(struct file *file,
763 struct poll_table_struct *wait)
764{
765 struct fimc_ctx *ctx = fh_to_ctx(file->private_data);
c2d430af
SN		 766 struct fimc_dev *fimc = ctx->fimc_dev;
767 int ret;
97d97422 768
c2d430af
SN		 769 if (mutex_lock_interruptible(&fimc->lock))
770 return -ERESTARTSYS;
771
772 ret = v4l2_m2m_poll(file, ctx->m2m_ctx, wait);
773 mutex_unlock(&fimc->lock);
774
775 return ret;
97d97422
SN		 776}
777
778
779static int fimc_m2m_mmap(struct file *file, struct vm_area_struct *vma)
780{
781 struct fimc_ctx *ctx = fh_to_ctx(file->private_data);
c2d430af
SN		 782 struct fimc_dev *fimc = ctx->fimc_dev;
783 int ret;
784
785 if (mutex_lock_interruptible(&fimc->lock))
786 return -ERESTARTSYS;
97d97422 787
c2d430af
SN		 788 ret = v4l2_m2m_mmap(file, ctx->m2m_ctx, vma);
789 mutex_unlock(&fimc->lock);
790
791 return ret;
97d97422
SN		 792}
793
794static const struct v4l2_file_operations fimc_m2m_fops = {
795 .owner = THIS_MODULE,
796 .open = fimc_m2m_open,
797 .release = fimc_m2m_release,
798 .poll = fimc_m2m_poll,
799 .unlocked_ioctl = video_ioctl2,
800 .mmap = fimc_m2m_mmap,
801};
802
803static struct v4l2_m2m_ops m2m_ops = {
804 .device_run = fimc_device_run,
805 .job_abort = fimc_job_abort,
806};
807
808int fimc_register_m2m_device(struct fimc_dev *fimc,
809 struct v4l2_device *v4l2_dev)
810{
bbc5296f
SN		 811 struct video_device *vfd = &fimc->m2m.vfd;
812 int ret;
97d97422 813
97d97422
SN		 814 fimc->v4l2_dev = v4l2_dev;
815
bbc5296f 816 memset(vfd, 0, sizeof(*vfd));
97d97422
SN		 817 vfd->fops = &fimc_m2m_fops;
818 vfd->ioctl_ops = &fimc_m2m_ioctl_ops;
819 vfd->v4l2_dev = v4l2_dev;
820 vfd->minor = -1;
bbc5296f 821 vfd->release = video_device_release_empty;
97d97422 822 vfd->lock = &fimc->lock;
954f340f 823 vfd->vfl_dir = VFL_DIR_M2M;
97d97422 824
693f5c40 825 snprintf(vfd->name, sizeof(vfd->name), "fimc.%d.m2m", fimc->id);
97d97422
SN		 826 video_set_drvdata(vfd, fimc);
827
97d97422
SN		 828 fimc->m2m.m2m_dev = v4l2_m2m_init(&m2m_ops);
829 if (IS_ERR(fimc->m2m.m2m_dev)) {
830 v4l2_err(v4l2_dev, "failed to initialize v4l2-m2m device\n");
bbc5296f 831 return PTR_ERR(fimc->m2m.m2m_dev);
97d97422
SN		 832 }
833
834 ret = media_entity_init(&vfd->entity, 0, NULL, 0);
693f5c40
SN		 835 if (ret)
836 goto err_me;
837
838 ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1);
839 if (ret)
840 goto err_vd;
841
842 v4l2_info(v4l2_dev, "Registered %s as /dev/%s\n",
843 vfd->name, video_device_node_name(vfd));
844 return 0;
97d97422 845
693f5c40
SN		 846err_vd:
847 media_entity_cleanup(&vfd->entity);
848err_me:
97d97422 849 v4l2_m2m_release(fimc->m2m.m2m_dev);
97d97422
SN		 850 return ret;
851}
852
853void fimc_unregister_m2m_device(struct fimc_dev *fimc)
854{
855 if (!fimc)
856 return;
857
858 if (fimc->m2m.m2m_dev)
859 v4l2_m2m_release(fimc->m2m.m2m_dev);
bbc5296f
SN		 860
861 if (video_is_registered(&fimc->m2m.vfd)) {
862 video_unregister_device(&fimc->m2m.vfd);
863 media_entity_cleanup(&fimc->m2m.vfd.entity);
97d97422
SN		 864 }
865}
Linux kernel - Deliverables
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