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accel/ivpu: Move recovery work to system_unbound_wq
[drm/drm-misc.git] / drivers / media / platform / samsung / exynos4-is / fimc-m2m.c
blob951433c8e92a5b75bad59f2e0dbf7d56f6726dee
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Samsung S5P/EXYNOS4 SoC series FIMC (video postprocessor) driver
4 *
5 * Copyright (C) 2012 - 2013 Samsung Electronics Co., Ltd.
6 * Sylwester Nawrocki <s.nawrocki@samsung.com>
7 */
8
9 #include <linux/module.h>
10 #include <linux/kernel.h>
11 #include <linux/types.h>
12 #include <linux/errno.h>
13 #include <linux/bug.h>
14 #include <linux/interrupt.h>
15 #include <linux/device.h>
16 #include <linux/platform_device.h>
17 #include <linux/pm_runtime.h>
18 #include <linux/list.h>
19 #include <linux/io.h>
20 #include <linux/slab.h>
21 #include <linux/clk.h>
22 #include <media/v4l2-ioctl.h>
23 #include <media/videobuf2-v4l2.h>
24 #include <media/videobuf2-dma-contig.h>
25
26 #include "common.h"
27 #include "fimc-core.h"
28 #include "fimc-reg.h"
29 #include "media-dev.h"
30
31 static unsigned int get_m2m_fmt_flags(unsigned int stream_type)
32 {
33 if (stream_type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
34 return FMT_FLAGS_M2M_IN;
35 else
36 return FMT_FLAGS_M2M_OUT;
37 }
38
39 void fimc_m2m_job_finish(struct fimc_ctx *ctx, int vb_state)
40 {
41 struct vb2_v4l2_buffer *src_vb, *dst_vb;
42
43 if (!ctx || !ctx->fh.m2m_ctx)
44 return;
45
46 src_vb = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
47 dst_vb = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
48
49 if (src_vb)
50 v4l2_m2m_buf_done(src_vb, vb_state);
51 if (dst_vb)
52 v4l2_m2m_buf_done(dst_vb, vb_state);
53 if (src_vb && dst_vb)
54 v4l2_m2m_job_finish(ctx->fimc_dev->m2m.m2m_dev,
55 ctx->fh.m2m_ctx);
56 }
57
58 /* Complete the transaction which has been scheduled for execution. */
59 static void fimc_m2m_shutdown(struct fimc_ctx *ctx)
60 {
61 struct fimc_dev *fimc = ctx->fimc_dev;
62
63 if (!fimc_m2m_pending(fimc))
64 return;
65
66 fimc_ctx_state_set(FIMC_CTX_SHUT, ctx);
67
68 wait_event_timeout(fimc->irq_queue,
69 !fimc_ctx_state_is_set(FIMC_CTX_SHUT, ctx),
70 FIMC_SHUTDOWN_TIMEOUT);
71 }
72
73 static int start_streaming(struct vb2_queue *q, unsigned int count)
74 {
75 struct fimc_ctx *ctx = q->drv_priv;
76
77 return pm_runtime_resume_and_get(&ctx->fimc_dev->pdev->dev);
78 }
79
80 static void stop_streaming(struct vb2_queue *q)
81 {
82 struct fimc_ctx *ctx = q->drv_priv;
83
84 fimc_m2m_shutdown(ctx);
85 fimc_m2m_job_finish(ctx, VB2_BUF_STATE_ERROR);
86 pm_runtime_put(&ctx->fimc_dev->pdev->dev);
87 }
88
89 static void fimc_device_run(void *priv)
90 {
91 struct vb2_v4l2_buffer *src_vb, *dst_vb;
92 struct fimc_ctx *ctx = priv;
93 struct fimc_frame *sf, *df;
94 struct fimc_dev *fimc;
95 unsigned long flags;
96 int ret;
97
98 if (WARN(!ctx, "Null context\n"))
99 return;
100
101 fimc = ctx->fimc_dev;
102 spin_lock_irqsave(&fimc->slock, flags);
103
104 set_bit(ST_M2M_PEND, &fimc->state);
105 sf = &ctx->s_frame;
106 df = &ctx->d_frame;
107
108 if (ctx->state & FIMC_PARAMS) {
109 /* Prepare the DMA offsets for scaler */
110 fimc_prepare_dma_offset(ctx, sf);
111 fimc_prepare_dma_offset(ctx, df);
112 }
113
114 src_vb = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
115 ret = fimc_prepare_addr(ctx, &src_vb->vb2_buf, sf, &sf->addr);
116 if (ret)
117 goto dma_unlock;
118
119 dst_vb = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
120 ret = fimc_prepare_addr(ctx, &dst_vb->vb2_buf, df, &df->addr);
121 if (ret)
122 goto dma_unlock;
123
124 dst_vb->vb2_buf.timestamp = src_vb->vb2_buf.timestamp;
125 dst_vb->flags &= ~V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
126 dst_vb->flags |=
127 src_vb->flags & V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
128
129 /* Reconfigure hardware if the context has changed. */
130 if (fimc->m2m.ctx != ctx) {
131 ctx->state |= FIMC_PARAMS;
132 fimc->m2m.ctx = ctx;
133 }
134
135 if (ctx->state & FIMC_PARAMS) {
136 fimc_set_yuv_order(ctx);
137 fimc_hw_set_input_path(ctx);
138 fimc_hw_set_in_dma(ctx);
139 ret = fimc_set_scaler_info(ctx);
140 if (ret)
141 goto dma_unlock;
142 fimc_hw_set_prescaler(ctx);
143 fimc_hw_set_mainscaler(ctx);
144 fimc_hw_set_target_format(ctx);
145 fimc_hw_set_rotation(ctx);
146 fimc_hw_set_effect(ctx);
147 fimc_hw_set_out_dma(ctx);
148 if (fimc->drv_data->alpha_color)
149 fimc_hw_set_rgb_alpha(ctx);
150 fimc_hw_set_output_path(ctx);
151 }
152 fimc_hw_set_input_addr(fimc, &sf->addr);
153 fimc_hw_set_output_addr(fimc, &df->addr, -1);
154
155 fimc_activate_capture(ctx);
156 ctx->state &= (FIMC_CTX_M2M | FIMC_CTX_CAP);
157 fimc_hw_activate_input_dma(fimc, true);
158
159 dma_unlock:
160 spin_unlock_irqrestore(&fimc->slock, flags);
161 }
162
163 static void fimc_job_abort(void *priv)
164 {
165 fimc_m2m_shutdown(priv);
166 }
167
168 static int fimc_queue_setup(struct vb2_queue *vq,
169 unsigned int *num_buffers, unsigned int *num_planes,
170 unsigned int sizes[], struct device *alloc_devs[])
171 {
172 struct fimc_ctx *ctx = vb2_get_drv_priv(vq);
173 const struct fimc_frame *f;
174 int i;
175
176 f = ctx_get_frame(ctx, vq->type);
177 if (IS_ERR(f))
178 return PTR_ERR(f);
179 /*
180 * Return number of non-contiguous planes (plane buffers)
181 * depending on the configured color format.
182 */
183 if (!f->fmt)
184 return -EINVAL;
185
186 *num_planes = f->fmt->memplanes;
187 for (i = 0; i < f->fmt->memplanes; i++)
188 sizes[i] = f->payload[i];
189 return 0;
190 }
191
192 static int fimc_buf_prepare(struct vb2_buffer *vb)
193 {
194 struct fimc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
195 const struct fimc_frame *frame;
196 int i;
197
198 frame = ctx_get_frame(ctx, vb->vb2_queue->type);
199 if (IS_ERR(frame))
200 return PTR_ERR(frame);
201
202 for (i = 0; i < frame->fmt->memplanes; i++)
203 vb2_set_plane_payload(vb, i, frame->payload[i]);
204
205 return 0;
206 }
207
208 static void fimc_buf_queue(struct vb2_buffer *vb)
209 {
210 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
211 struct fimc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
212 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
213 }
214
215 static const struct vb2_ops fimc_qops = {
216 .queue_setup = fimc_queue_setup,
217 .buf_prepare = fimc_buf_prepare,
218 .buf_queue = fimc_buf_queue,
219 .stop_streaming = stop_streaming,
220 .start_streaming = start_streaming,
221 };
222
223 /*
224 * V4L2 ioctl handlers
225 */
226 static int fimc_m2m_querycap(struct file *file, void *fh,
227 struct v4l2_capability *cap)
228 {
229 struct fimc_dev *fimc = video_drvdata(file);
230
231 __fimc_vidioc_querycap(&fimc->pdev->dev, cap);
232 return 0;
233 }
234
235 static int fimc_m2m_enum_fmt(struct file *file, void *priv,
236 struct v4l2_fmtdesc *f)
237 {
238 const struct fimc_fmt *fmt;
239
240 fmt = fimc_find_format(NULL, NULL, get_m2m_fmt_flags(f->type),
241 f->index);
242 if (!fmt)
243 return -EINVAL;
244
245 f->pixelformat = fmt->fourcc;
246 return 0;
247 }
248
249 static int fimc_m2m_g_fmt_mplane(struct file *file, void *fh,
250 struct v4l2_format *f)
251 {
252 struct fimc_ctx *ctx = fh_to_ctx(fh);
253 const struct fimc_frame *frame = ctx_get_frame(ctx, f->type);
254
255 if (IS_ERR(frame))
256 return PTR_ERR(frame);
257
258 __fimc_get_format(frame, f);
259 return 0;
260 }
261
262 static int fimc_try_fmt_mplane(struct fimc_ctx *ctx, struct v4l2_format *f)
263 {
264 struct fimc_dev *fimc = ctx->fimc_dev;
265 const struct fimc_variant *variant = fimc->variant;
266 struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
267 const struct fimc_fmt *fmt;
268 u32 max_w, mod_x, mod_y;
269
270 if (!IS_M2M(f->type))
271 return -EINVAL;
272
273 fmt = fimc_find_format(&pix->pixelformat, NULL,
274 get_m2m_fmt_flags(f->type), 0);
275 if (WARN(fmt == NULL, "Pixel format lookup failed"))
276 return -EINVAL;
277
278 if (pix->field == V4L2_FIELD_ANY)
279 pix->field = V4L2_FIELD_NONE;
280 else if (pix->field != V4L2_FIELD_NONE)
281 return -EINVAL;
282
283 if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
284 max_w = variant->pix_limit->scaler_dis_w;
285 mod_x = ffs(variant->min_inp_pixsize) - 1;
286 } else {
287 max_w = variant->pix_limit->out_rot_dis_w;
288 mod_x = ffs(variant->min_out_pixsize) - 1;
289 }
290
291 if (tiled_fmt(fmt)) {
292 mod_x = 6; /* 64 x 32 pixels tile */
293 mod_y = 5;
294 } else {
295 if (variant->min_vsize_align == 1)
296 mod_y = fimc_fmt_is_rgb(fmt->color) ? 0 : 1;
297 else
298 mod_y = ffs(variant->min_vsize_align) - 1;
299 }
300
301 v4l_bound_align_image(&pix->width, 16, max_w, mod_x,
302 &pix->height, 8, variant->pix_limit->scaler_dis_w, mod_y, 0);
303
304 fimc_adjust_mplane_format(fmt, pix->width, pix->height, &f->fmt.pix_mp);
305 return 0;
306 }
307
308 static int fimc_m2m_try_fmt_mplane(struct file *file, void *fh,
309 struct v4l2_format *f)
310 {
311 struct fimc_ctx *ctx = fh_to_ctx(fh);
312 return fimc_try_fmt_mplane(ctx, f);
313 }
314
315 static void __set_frame_format(struct fimc_frame *frame,
316 const struct fimc_fmt *fmt,
317 const struct v4l2_pix_format_mplane *pixm)
318 {
319 int i;
320
321 for (i = 0; i < fmt->memplanes; i++) {
322 frame->bytesperline[i] = pixm->plane_fmt[i].bytesperline;
323 frame->payload[i] = pixm->plane_fmt[i].sizeimage;
324 }
325
326 frame->f_width = pixm->width;
327 frame->f_height = pixm->height;
328 frame->o_width = pixm->width;
329 frame->o_height = pixm->height;
330 frame->width = pixm->width;
331 frame->height = pixm->height;
332 frame->offs_h = 0;
333 frame->offs_v = 0;
334 frame->fmt = fmt;
335 }
336
337 static int fimc_m2m_s_fmt_mplane(struct file *file, void *fh,
338 struct v4l2_format *f)
339 {
340 struct fimc_ctx *ctx = fh_to_ctx(fh);
341 struct fimc_dev *fimc = ctx->fimc_dev;
342 const struct fimc_fmt *fmt;
343 struct vb2_queue *vq;
344 struct fimc_frame *frame;
345 int ret;
346
347 ret = fimc_try_fmt_mplane(ctx, f);
348 if (ret)
349 return ret;
350
351 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
352
353 if (vb2_is_busy(vq)) {
354 v4l2_err(&fimc->m2m.vfd, "queue (%d) busy\n", f->type);
355 return -EBUSY;
356 }
357
358 if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
359 frame = &ctx->s_frame;
360 else
361 frame = &ctx->d_frame;
362
363 fmt = fimc_find_format(&f->fmt.pix_mp.pixelformat, NULL,
364 get_m2m_fmt_flags(f->type), 0);
365 if (!fmt)
366 return -EINVAL;
367
368 __set_frame_format(frame, fmt, &f->fmt.pix_mp);
369
370 /* Update RGB Alpha control state and value range */
371 fimc_alpha_ctrl_update(ctx);
372
373 return 0;
374 }
375
376 static int fimc_m2m_g_selection(struct file *file, void *fh,
377 struct v4l2_selection *s)
378 {
379 struct fimc_ctx *ctx = fh_to_ctx(fh);
380 const struct fimc_frame *frame;
381
382 frame = ctx_get_frame(ctx, s->type);
383 if (IS_ERR(frame))
384 return PTR_ERR(frame);
385
386 switch (s->target) {
387 case V4L2_SEL_TGT_CROP:
388 case V4L2_SEL_TGT_CROP_DEFAULT:
389 case V4L2_SEL_TGT_CROP_BOUNDS:
390 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
391 return -EINVAL;
392 break;
393 case V4L2_SEL_TGT_COMPOSE:
394 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
395 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
396 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
397 return -EINVAL;
398 break;
399 default:
400 return -EINVAL;
401 }
402
403 switch (s->target) {
404 case V4L2_SEL_TGT_CROP:
405 case V4L2_SEL_TGT_COMPOSE:
406 s->r.left = frame->offs_h;
407 s->r.top = frame->offs_v;
408 s->r.width = frame->width;
409 s->r.height = frame->height;
410 break;
411 case V4L2_SEL_TGT_CROP_DEFAULT:
412 case V4L2_SEL_TGT_CROP_BOUNDS:
413 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
414 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
415 s->r.left = 0;
416 s->r.top = 0;
417 s->r.width = frame->o_width;
418 s->r.height = frame->o_height;
419 break;
420 default:
421 return -EINVAL;
422 }
423 return 0;
424 }
425
426 static int fimc_m2m_try_selection(struct fimc_ctx *ctx,
427 struct v4l2_selection *s)
428 {
429 struct fimc_dev *fimc = ctx->fimc_dev;
430 const struct fimc_frame *f;
431 u32 min_size, halign, depth = 0;
432 int i;
433
434 if (s->r.top < 0 || s->r.left < 0) {
435 v4l2_err(&fimc->m2m.vfd,
436 "doesn't support negative values for top & left\n");
437 return -EINVAL;
438 }
439 if (s->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
440 f = &ctx->d_frame;
441 if (s->target != V4L2_SEL_TGT_COMPOSE)
442 return -EINVAL;
443 } else if (s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
444 f = &ctx->s_frame;
445 if (s->target != V4L2_SEL_TGT_CROP)
446 return -EINVAL;
447 } else {
448 return -EINVAL;
449 }
450
451 min_size = (f == &ctx->s_frame) ?
452 fimc->variant->min_inp_pixsize : fimc->variant->min_out_pixsize;
453
454 /* Get pixel alignment constraints. */
455 if (fimc->variant->min_vsize_align == 1)
456 halign = fimc_fmt_is_rgb(f->fmt->color) ? 0 : 1;
457 else
458 halign = ffs(fimc->variant->min_vsize_align) - 1;
459
460 for (i = 0; i < f->fmt->memplanes; i++)
461 depth += f->fmt->depth[i];
462
463 v4l_bound_align_image(&s->r.width, min_size, f->o_width,
464 ffs(min_size) - 1,
465 &s->r.height, min_size, f->o_height,
466 halign, 64/(ALIGN(depth, 8)));
467
468 /* adjust left/top if cropping rectangle is out of bounds */
469 if (s->r.left + s->r.width > f->o_width)
470 s->r.left = f->o_width - s->r.width;
471 if (s->r.top + s->r.height > f->o_height)
472 s->r.top = f->o_height - s->r.height;
473
474 s->r.left = round_down(s->r.left, min_size);
475 s->r.top = round_down(s->r.top, fimc->variant->hor_offs_align);
476
477 dbg("l:%d, t:%d, w:%d, h:%d, f_w: %d, f_h: %d",
478 s->r.left, s->r.top, s->r.width, s->r.height,
479 f->f_width, f->f_height);
480
481 return 0;
482 }
483
484 static int fimc_m2m_s_selection(struct file *file, void *fh,
485 struct v4l2_selection *s)
486 {
487 struct fimc_ctx *ctx = fh_to_ctx(fh);
488 struct fimc_dev *fimc = ctx->fimc_dev;
489 struct fimc_frame *f;
490 int ret;
491
492 ret = fimc_m2m_try_selection(ctx, s);
493 if (ret)
494 return ret;
495
496 f = (s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) ?
497 &ctx->s_frame : &ctx->d_frame;
498
499 /* Check to see if scaling ratio is within supported range */
500 if (s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
501 ret = fimc_check_scaler_ratio(ctx, s->r.width,
502 s->r.height, ctx->d_frame.width,
503 ctx->d_frame.height, ctx->rotation);
504 } else {
505 ret = fimc_check_scaler_ratio(ctx, ctx->s_frame.width,
506 ctx->s_frame.height, s->r.width,
507 s->r.height, ctx->rotation);
508 }
509 if (ret) {
510 v4l2_err(&fimc->m2m.vfd, "Out of scaler range\n");
511 return -EINVAL;
512 }
513
514 f->offs_h = s->r.left;
515 f->offs_v = s->r.top;
516 f->width = s->r.width;
517 f->height = s->r.height;
518
519 fimc_ctx_state_set(FIMC_PARAMS, ctx);
520
521 return 0;
522 }
523
524 static const struct v4l2_ioctl_ops fimc_m2m_ioctl_ops = {
525 .vidioc_querycap = fimc_m2m_querycap,
526 .vidioc_enum_fmt_vid_cap = fimc_m2m_enum_fmt,
527 .vidioc_enum_fmt_vid_out = fimc_m2m_enum_fmt,
528 .vidioc_g_fmt_vid_cap_mplane = fimc_m2m_g_fmt_mplane,
529 .vidioc_g_fmt_vid_out_mplane = fimc_m2m_g_fmt_mplane,
530 .vidioc_try_fmt_vid_cap_mplane = fimc_m2m_try_fmt_mplane,
531 .vidioc_try_fmt_vid_out_mplane = fimc_m2m_try_fmt_mplane,
532 .vidioc_s_fmt_vid_cap_mplane = fimc_m2m_s_fmt_mplane,
533 .vidioc_s_fmt_vid_out_mplane = fimc_m2m_s_fmt_mplane,
534 .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
535 .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
536 .vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
537 .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
538 .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
539 .vidioc_streamon = v4l2_m2m_ioctl_streamon,
540 .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
541 .vidioc_g_selection = fimc_m2m_g_selection,
542 .vidioc_s_selection = fimc_m2m_s_selection,
543
544 };
545
546 static int queue_init(void *priv, struct vb2_queue *src_vq,
547 struct vb2_queue *dst_vq)
548 {
549 struct fimc_ctx *ctx = priv;
550 int ret;
551
552 src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
553 src_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
554 src_vq->drv_priv = ctx;
555 src_vq->ops = &fimc_qops;
556 src_vq->mem_ops = &vb2_dma_contig_memops;
557 src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
558 src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
559 src_vq->lock = &ctx->fimc_dev->lock;
560 src_vq->dev = &ctx->fimc_dev->pdev->dev;
561
562 ret = vb2_queue_init(src_vq);
563 if (ret)
564 return ret;
565
566 dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
567 dst_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
568 dst_vq->drv_priv = ctx;
569 dst_vq->ops = &fimc_qops;
570 dst_vq->mem_ops = &vb2_dma_contig_memops;
571 dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
572 dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
573 dst_vq->lock = &ctx->fimc_dev->lock;
574 dst_vq->dev = &ctx->fimc_dev->pdev->dev;
575
576 return vb2_queue_init(dst_vq);
577 }
578
579 static int fimc_m2m_set_default_format(struct fimc_ctx *ctx)
580 {
581 struct v4l2_pix_format_mplane pixm = {
582 .pixelformat = V4L2_PIX_FMT_RGB32,
583 .width = 800,
584 .height = 600,
585 .plane_fmt[0] = {
586 .bytesperline = 800 * 4,
587 .sizeimage = 800 * 4 * 600,
588 },
589 };
590 const struct fimc_fmt *fmt;
591
592 fmt = fimc_find_format(&pixm.pixelformat, NULL, FMT_FLAGS_M2M, 0);
593 if (!fmt)
594 return -EINVAL;
595
596 __set_frame_format(&ctx->s_frame, fmt, &pixm);
597 __set_frame_format(&ctx->d_frame, fmt, &pixm);
598
599 return 0;
600 }
601
602 static int fimc_m2m_open(struct file *file)
603 {
604 struct fimc_dev *fimc = video_drvdata(file);
605 struct fimc_ctx *ctx;
606 int ret = -EBUSY;
607
608 pr_debug("pid: %d, state: %#lx\n", task_pid_nr(current), fimc->state);
609
610 if (mutex_lock_interruptible(&fimc->lock))
611 return -ERESTARTSYS;
612 /*
613 * Don't allow simultaneous open() of the mem-to-mem and the
614 * capture video node that belong to same FIMC IP instance.
615 */
616 if (test_bit(ST_CAPT_BUSY, &fimc->state))
617 goto unlock;
618
619 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
620 if (!ctx) {
621 ret = -ENOMEM;
622 goto unlock;
623 }
624 v4l2_fh_init(&ctx->fh, &fimc->m2m.vfd);
625 ctx->fimc_dev = fimc;
626
627 /* Default color format */
628 ctx->s_frame.fmt = fimc_get_format(0);
629 ctx->d_frame.fmt = fimc_get_format(0);
630
631 ret = fimc_ctrls_create(ctx);
632 if (ret)
633 goto error_fh;
634
635 /* Use separate control handler per file handle */
636 ctx->fh.ctrl_handler = &ctx->ctrls.handler;
637 file->private_data = &ctx->fh;
638 v4l2_fh_add(&ctx->fh);
639
640 /* Setup the device context for memory-to-memory mode */
641 ctx->state = FIMC_CTX_M2M;
642 ctx->flags = 0;
643 ctx->in_path = FIMC_IO_DMA;
644 ctx->out_path = FIMC_IO_DMA;
645 ctx->scaler.enabled = 1;
646
647 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(fimc->m2m.m2m_dev, ctx, queue_init);
648 if (IS_ERR(ctx->fh.m2m_ctx)) {
649 ret = PTR_ERR(ctx->fh.m2m_ctx);
650 goto error_c;
651 }
652
653 if (fimc->m2m.refcnt++ == 0)
654 set_bit(ST_M2M_RUN, &fimc->state);
655
656 ret = fimc_m2m_set_default_format(ctx);
657 if (ret < 0)
658 goto error_m2m_ctx;
659
660 mutex_unlock(&fimc->lock);
661 return 0;
662
663 error_m2m_ctx:
664 v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
665 error_c:
666 fimc_ctrls_delete(ctx);
667 v4l2_fh_del(&ctx->fh);
668 error_fh:
669 v4l2_fh_exit(&ctx->fh);
670 kfree(ctx);
671 unlock:
672 mutex_unlock(&fimc->lock);
673 return ret;
674 }
675
676 static int fimc_m2m_release(struct file *file)
677 {
678 struct fimc_ctx *ctx = fh_to_ctx(file->private_data);
679 struct fimc_dev *fimc = ctx->fimc_dev;
680
681 dbg("pid: %d, state: 0x%lx, refcnt= %d",
682 task_pid_nr(current), fimc->state, fimc->m2m.refcnt);
683
684 mutex_lock(&fimc->lock);
685
686 v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
687 fimc_ctrls_delete(ctx);
688 v4l2_fh_del(&ctx->fh);
689 v4l2_fh_exit(&ctx->fh);
690
691 if (--fimc->m2m.refcnt <= 0)
692 clear_bit(ST_M2M_RUN, &fimc->state);
693 kfree(ctx);
694
695 mutex_unlock(&fimc->lock);
696 return 0;
697 }
698
699 static const struct v4l2_file_operations fimc_m2m_fops = {
700 .owner = THIS_MODULE,
701 .open = fimc_m2m_open,
702 .release = fimc_m2m_release,
703 .poll = v4l2_m2m_fop_poll,
704 .unlocked_ioctl = video_ioctl2,
705 .mmap = v4l2_m2m_fop_mmap,
706 };
707
708 static const struct v4l2_m2m_ops m2m_ops = {
709 .device_run = fimc_device_run,
710 .job_abort = fimc_job_abort,
711 };
712
713 int fimc_register_m2m_device(struct fimc_dev *fimc,
714 struct v4l2_device *v4l2_dev)
715 {
716 struct video_device *vfd = &fimc->m2m.vfd;
717 int ret;
718
719 fimc->v4l2_dev = v4l2_dev;
720
721 memset(vfd, 0, sizeof(*vfd));
722 vfd->fops = &fimc_m2m_fops;
723 vfd->ioctl_ops = &fimc_m2m_ioctl_ops;
724 vfd->v4l2_dev = v4l2_dev;
725 vfd->minor = -1;
726 vfd->release = video_device_release_empty;
727 vfd->lock = &fimc->lock;
728 vfd->vfl_dir = VFL_DIR_M2M;
729 vfd->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_M2M_MPLANE;
730 set_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags);
731
732 snprintf(vfd->name, sizeof(vfd->name), "fimc.%d.m2m", fimc->id);
733 video_set_drvdata(vfd, fimc);
734
735 fimc->m2m.m2m_dev = v4l2_m2m_init(&m2m_ops);
736 if (IS_ERR(fimc->m2m.m2m_dev)) {
737 v4l2_err(v4l2_dev, "failed to initialize v4l2-m2m device\n");
738 return PTR_ERR(fimc->m2m.m2m_dev);
739 }
740
741 ret = media_entity_pads_init(&vfd->entity, 0, NULL);
742 if (ret)
743 goto err_me;
744
745 ret = video_register_device(vfd, VFL_TYPE_VIDEO, -1);
746 if (ret)
747 goto err_vd;
748
749 v4l2_info(v4l2_dev, "Registered %s as /dev/%s\n",
750 vfd->name, video_device_node_name(vfd));
751 return 0;
752
753 err_vd:
754 media_entity_cleanup(&vfd->entity);
755 err_me:
756 v4l2_m2m_release(fimc->m2m.m2m_dev);
757 return ret;
758 }
759
760 void fimc_unregister_m2m_device(struct fimc_dev *fimc)
761 {
762 if (!fimc)
763 return;
764
765 if (fimc->m2m.m2m_dev)
766 v4l2_m2m_release(fimc->m2m.m2m_dev);
767
768 if (video_is_registered(&fimc->m2m.vfd)) {
769 video_unregister_device(&fimc->m2m.vfd);
770 media_entity_cleanup(&fimc->m2m.vfd.entity);
771 }
772 }
Kernel DRM miscellaneous fixes and cross-tree changes