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
get_m2m_fmt_flags(unsigned int stream_type)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
fimc_m2m_job_finish(struct fimc_ctx * ctx,int vb_state)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. */
fimc_m2m_shutdown(struct fimc_ctx * ctx)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
start_streaming(struct vb2_queue * q,unsigned int count)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
stop_streaming(struct vb2_queue * q)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
fimc_device_run(void * priv)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
fimc_job_abort(void * priv)163 static void fimc_job_abort(void *priv)
164 {
165 fimc_m2m_shutdown(priv);
166 }
167
fimc_queue_setup(struct vb2_queue * vq,unsigned int * num_buffers,unsigned int * num_planes,unsigned int sizes[],struct device * alloc_devs[])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
fimc_buf_prepare(struct vb2_buffer * vb)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
fimc_buf_queue(struct vb2_buffer * vb)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 .wait_prepare = vb2_ops_wait_prepare,
220 .wait_finish = vb2_ops_wait_finish,
221 .stop_streaming = stop_streaming,
222 .start_streaming = start_streaming,
223 };
224
225 /*
226 * V4L2 ioctl handlers
227 */
fimc_m2m_querycap(struct file * file,void * fh,struct v4l2_capability * cap)228 static int fimc_m2m_querycap(struct file *file, void *fh,
229 struct v4l2_capability *cap)
230 {
231 struct fimc_dev *fimc = video_drvdata(file);
232
233 __fimc_vidioc_querycap(&fimc->pdev->dev, cap);
234 return 0;
235 }
236
fimc_m2m_enum_fmt(struct file * file,void * priv,struct v4l2_fmtdesc * f)237 static int fimc_m2m_enum_fmt(struct file *file, void *priv,
238 struct v4l2_fmtdesc *f)
239 {
240 const struct fimc_fmt *fmt;
241
242 fmt = fimc_find_format(NULL, NULL, get_m2m_fmt_flags(f->type),
243 f->index);
244 if (!fmt)
245 return -EINVAL;
246
247 f->pixelformat = fmt->fourcc;
248 return 0;
249 }
250
fimc_m2m_g_fmt_mplane(struct file * file,void * fh,struct v4l2_format * f)251 static int fimc_m2m_g_fmt_mplane(struct file *file, void *fh,
252 struct v4l2_format *f)
253 {
254 struct fimc_ctx *ctx = fh_to_ctx(fh);
255 const struct fimc_frame *frame = ctx_get_frame(ctx, f->type);
256
257 if (IS_ERR(frame))
258 return PTR_ERR(frame);
259
260 __fimc_get_format(frame, f);
261 return 0;
262 }
263
fimc_try_fmt_mplane(struct fimc_ctx * ctx,struct v4l2_format * f)264 static int fimc_try_fmt_mplane(struct fimc_ctx *ctx, struct v4l2_format *f)
265 {
266 struct fimc_dev *fimc = ctx->fimc_dev;
267 const struct fimc_variant *variant = fimc->variant;
268 struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
269 const struct fimc_fmt *fmt;
270 u32 max_w, mod_x, mod_y;
271
272 if (!IS_M2M(f->type))
273 return -EINVAL;
274
275 fmt = fimc_find_format(&pix->pixelformat, NULL,
276 get_m2m_fmt_flags(f->type), 0);
277 if (WARN(fmt == NULL, "Pixel format lookup failed"))
278 return -EINVAL;
279
280 if (pix->field == V4L2_FIELD_ANY)
281 pix->field = V4L2_FIELD_NONE;
282 else if (pix->field != V4L2_FIELD_NONE)
283 return -EINVAL;
284
285 if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
286 max_w = variant->pix_limit->scaler_dis_w;
287 mod_x = ffs(variant->min_inp_pixsize) - 1;
288 } else {
289 max_w = variant->pix_limit->out_rot_dis_w;
290 mod_x = ffs(variant->min_out_pixsize) - 1;
291 }
292
293 if (tiled_fmt(fmt)) {
294 mod_x = 6; /* 64 x 32 pixels tile */
295 mod_y = 5;
296 } else {
297 if (variant->min_vsize_align == 1)
298 mod_y = fimc_fmt_is_rgb(fmt->color) ? 0 : 1;
299 else
300 mod_y = ffs(variant->min_vsize_align) - 1;
301 }
302
303 v4l_bound_align_image(&pix->width, 16, max_w, mod_x,
304 &pix->height, 8, variant->pix_limit->scaler_dis_w, mod_y, 0);
305
306 fimc_adjust_mplane_format(fmt, pix->width, pix->height, &f->fmt.pix_mp);
307 return 0;
308 }
309
fimc_m2m_try_fmt_mplane(struct file * file,void * fh,struct v4l2_format * f)310 static int fimc_m2m_try_fmt_mplane(struct file *file, void *fh,
311 struct v4l2_format *f)
312 {
313 struct fimc_ctx *ctx = fh_to_ctx(fh);
314 return fimc_try_fmt_mplane(ctx, f);
315 }
316
__set_frame_format(struct fimc_frame * frame,const struct fimc_fmt * fmt,const struct v4l2_pix_format_mplane * pixm)317 static void __set_frame_format(struct fimc_frame *frame,
318 const struct fimc_fmt *fmt,
319 const struct v4l2_pix_format_mplane *pixm)
320 {
321 int i;
322
323 for (i = 0; i < fmt->memplanes; i++) {
324 frame->bytesperline[i] = pixm->plane_fmt[i].bytesperline;
325 frame->payload[i] = pixm->plane_fmt[i].sizeimage;
326 }
327
328 frame->f_width = pixm->width;
329 frame->f_height = pixm->height;
330 frame->o_width = pixm->width;
331 frame->o_height = pixm->height;
332 frame->width = pixm->width;
333 frame->height = pixm->height;
334 frame->offs_h = 0;
335 frame->offs_v = 0;
336 frame->fmt = fmt;
337 }
338
fimc_m2m_s_fmt_mplane(struct file * file,void * fh,struct v4l2_format * f)339 static int fimc_m2m_s_fmt_mplane(struct file *file, void *fh,
340 struct v4l2_format *f)
341 {
342 struct fimc_ctx *ctx = fh_to_ctx(fh);
343 struct fimc_dev *fimc = ctx->fimc_dev;
344 const struct fimc_fmt *fmt;
345 struct vb2_queue *vq;
346 struct fimc_frame *frame;
347 int ret;
348
349 ret = fimc_try_fmt_mplane(ctx, f);
350 if (ret)
351 return ret;
352
353 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
354
355 if (vb2_is_busy(vq)) {
356 v4l2_err(&fimc->m2m.vfd, "queue (%d) busy\n", f->type);
357 return -EBUSY;
358 }
359
360 if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
361 frame = &ctx->s_frame;
362 else
363 frame = &ctx->d_frame;
364
365 fmt = fimc_find_format(&f->fmt.pix_mp.pixelformat, NULL,
366 get_m2m_fmt_flags(f->type), 0);
367 if (!fmt)
368 return -EINVAL;
369
370 __set_frame_format(frame, fmt, &f->fmt.pix_mp);
371
372 /* Update RGB Alpha control state and value range */
373 fimc_alpha_ctrl_update(ctx);
374
375 return 0;
376 }
377
fimc_m2m_g_selection(struct file * file,void * fh,struct v4l2_selection * s)378 static int fimc_m2m_g_selection(struct file *file, void *fh,
379 struct v4l2_selection *s)
380 {
381 struct fimc_ctx *ctx = fh_to_ctx(fh);
382 const struct fimc_frame *frame;
383
384 frame = ctx_get_frame(ctx, s->type);
385 if (IS_ERR(frame))
386 return PTR_ERR(frame);
387
388 switch (s->target) {
389 case V4L2_SEL_TGT_CROP:
390 case V4L2_SEL_TGT_CROP_DEFAULT:
391 case V4L2_SEL_TGT_CROP_BOUNDS:
392 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
393 return -EINVAL;
394 break;
395 case V4L2_SEL_TGT_COMPOSE:
396 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
397 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
398 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
399 return -EINVAL;
400 break;
401 default:
402 return -EINVAL;
403 }
404
405 switch (s->target) {
406 case V4L2_SEL_TGT_CROP:
407 case V4L2_SEL_TGT_COMPOSE:
408 s->r.left = frame->offs_h;
409 s->r.top = frame->offs_v;
410 s->r.width = frame->width;
411 s->r.height = frame->height;
412 break;
413 case V4L2_SEL_TGT_CROP_DEFAULT:
414 case V4L2_SEL_TGT_CROP_BOUNDS:
415 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
416 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
417 s->r.left = 0;
418 s->r.top = 0;
419 s->r.width = frame->o_width;
420 s->r.height = frame->o_height;
421 break;
422 default:
423 return -EINVAL;
424 }
425 return 0;
426 }
427
fimc_m2m_try_selection(struct fimc_ctx * ctx,struct v4l2_selection * s)428 static int fimc_m2m_try_selection(struct fimc_ctx *ctx,
429 struct v4l2_selection *s)
430 {
431 struct fimc_dev *fimc = ctx->fimc_dev;
432 const struct fimc_frame *f;
433 u32 min_size, halign, depth = 0;
434 int i;
435
436 if (s->r.top < 0 || s->r.left < 0) {
437 v4l2_err(&fimc->m2m.vfd,
438 "doesn't support negative values for top & left\n");
439 return -EINVAL;
440 }
441 if (s->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
442 f = &ctx->d_frame;
443 if (s->target != V4L2_SEL_TGT_COMPOSE)
444 return -EINVAL;
445 } else if (s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
446 f = &ctx->s_frame;
447 if (s->target != V4L2_SEL_TGT_CROP)
448 return -EINVAL;
449 } else {
450 return -EINVAL;
451 }
452
453 min_size = (f == &ctx->s_frame) ?
454 fimc->variant->min_inp_pixsize : fimc->variant->min_out_pixsize;
455
456 /* Get pixel alignment constraints. */
457 if (fimc->variant->min_vsize_align == 1)
458 halign = fimc_fmt_is_rgb(f->fmt->color) ? 0 : 1;
459 else
460 halign = ffs(fimc->variant->min_vsize_align) - 1;
461
462 for (i = 0; i < f->fmt->memplanes; i++)
463 depth += f->fmt->depth[i];
464
465 v4l_bound_align_image(&s->r.width, min_size, f->o_width,
466 ffs(min_size) - 1,
467 &s->r.height, min_size, f->o_height,
468 halign, 64/(ALIGN(depth, 8)));
469
470 /* adjust left/top if cropping rectangle is out of bounds */
471 if (s->r.left + s->r.width > f->o_width)
472 s->r.left = f->o_width - s->r.width;
473 if (s->r.top + s->r.height > f->o_height)
474 s->r.top = f->o_height - s->r.height;
475
476 s->r.left = round_down(s->r.left, min_size);
477 s->r.top = round_down(s->r.top, fimc->variant->hor_offs_align);
478
479 dbg("l:%d, t:%d, w:%d, h:%d, f_w: %d, f_h: %d",
480 s->r.left, s->r.top, s->r.width, s->r.height,
481 f->f_width, f->f_height);
482
483 return 0;
484 }
485
fimc_m2m_s_selection(struct file * file,void * fh,struct v4l2_selection * s)486 static int fimc_m2m_s_selection(struct file *file, void *fh,
487 struct v4l2_selection *s)
488 {
489 struct fimc_ctx *ctx = fh_to_ctx(fh);
490 struct fimc_dev *fimc = ctx->fimc_dev;
491 struct fimc_frame *f;
492 int ret;
493
494 ret = fimc_m2m_try_selection(ctx, s);
495 if (ret)
496 return ret;
497
498 f = (s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) ?
499 &ctx->s_frame : &ctx->d_frame;
500
501 /* Check to see if scaling ratio is within supported range */
502 if (s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
503 ret = fimc_check_scaler_ratio(ctx, s->r.width,
504 s->r.height, ctx->d_frame.width,
505 ctx->d_frame.height, ctx->rotation);
506 } else {
507 ret = fimc_check_scaler_ratio(ctx, ctx->s_frame.width,
508 ctx->s_frame.height, s->r.width,
509 s->r.height, ctx->rotation);
510 }
511 if (ret) {
512 v4l2_err(&fimc->m2m.vfd, "Out of scaler range\n");
513 return -EINVAL;
514 }
515
516 f->offs_h = s->r.left;
517 f->offs_v = s->r.top;
518 f->width = s->r.width;
519 f->height = s->r.height;
520
521 fimc_ctx_state_set(FIMC_PARAMS, ctx);
522
523 return 0;
524 }
525
526 static const struct v4l2_ioctl_ops fimc_m2m_ioctl_ops = {
527 .vidioc_querycap = fimc_m2m_querycap,
528 .vidioc_enum_fmt_vid_cap = fimc_m2m_enum_fmt,
529 .vidioc_enum_fmt_vid_out = fimc_m2m_enum_fmt,
530 .vidioc_g_fmt_vid_cap_mplane = fimc_m2m_g_fmt_mplane,
531 .vidioc_g_fmt_vid_out_mplane = fimc_m2m_g_fmt_mplane,
532 .vidioc_try_fmt_vid_cap_mplane = fimc_m2m_try_fmt_mplane,
533 .vidioc_try_fmt_vid_out_mplane = fimc_m2m_try_fmt_mplane,
534 .vidioc_s_fmt_vid_cap_mplane = fimc_m2m_s_fmt_mplane,
535 .vidioc_s_fmt_vid_out_mplane = fimc_m2m_s_fmt_mplane,
536 .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
537 .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
538 .vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
539 .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
540 .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
541 .vidioc_streamon = v4l2_m2m_ioctl_streamon,
542 .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
543 .vidioc_g_selection = fimc_m2m_g_selection,
544 .vidioc_s_selection = fimc_m2m_s_selection,
545
546 };
547
queue_init(void * priv,struct vb2_queue * src_vq,struct vb2_queue * dst_vq)548 static int queue_init(void *priv, struct vb2_queue *src_vq,
549 struct vb2_queue *dst_vq)
550 {
551 struct fimc_ctx *ctx = priv;
552 int ret;
553
554 src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
555 src_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
556 src_vq->drv_priv = ctx;
557 src_vq->ops = &fimc_qops;
558 src_vq->mem_ops = &vb2_dma_contig_memops;
559 src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
560 src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
561 src_vq->lock = &ctx->fimc_dev->lock;
562 src_vq->dev = &ctx->fimc_dev->pdev->dev;
563
564 ret = vb2_queue_init(src_vq);
565 if (ret)
566 return ret;
567
568 dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
569 dst_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
570 dst_vq->drv_priv = ctx;
571 dst_vq->ops = &fimc_qops;
572 dst_vq->mem_ops = &vb2_dma_contig_memops;
573 dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
574 dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
575 dst_vq->lock = &ctx->fimc_dev->lock;
576 dst_vq->dev = &ctx->fimc_dev->pdev->dev;
577
578 return vb2_queue_init(dst_vq);
579 }
580
fimc_m2m_set_default_format(struct fimc_ctx * ctx)581 static int fimc_m2m_set_default_format(struct fimc_ctx *ctx)
582 {
583 struct v4l2_pix_format_mplane pixm = {
584 .pixelformat = V4L2_PIX_FMT_RGB32,
585 .width = 800,
586 .height = 600,
587 .plane_fmt[0] = {
588 .bytesperline = 800 * 4,
589 .sizeimage = 800 * 4 * 600,
590 },
591 };
592 const struct fimc_fmt *fmt;
593
594 fmt = fimc_find_format(&pixm.pixelformat, NULL, FMT_FLAGS_M2M, 0);
595 if (!fmt)
596 return -EINVAL;
597
598 __set_frame_format(&ctx->s_frame, fmt, &pixm);
599 __set_frame_format(&ctx->d_frame, fmt, &pixm);
600
601 return 0;
602 }
603
fimc_m2m_open(struct file * file)604 static int fimc_m2m_open(struct file *file)
605 {
606 struct fimc_dev *fimc = video_drvdata(file);
607 struct fimc_ctx *ctx;
608 int ret = -EBUSY;
609
610 pr_debug("pid: %d, state: %#lx\n", task_pid_nr(current), fimc->state);
611
612 if (mutex_lock_interruptible(&fimc->lock))
613 return -ERESTARTSYS;
614 /*
615 * Don't allow simultaneous open() of the mem-to-mem and the
616 * capture video node that belong to same FIMC IP instance.
617 */
618 if (test_bit(ST_CAPT_BUSY, &fimc->state))
619 goto unlock;
620
621 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
622 if (!ctx) {
623 ret = -ENOMEM;
624 goto unlock;
625 }
626 v4l2_fh_init(&ctx->fh, &fimc->m2m.vfd);
627 ctx->fimc_dev = fimc;
628
629 /* Default color format */
630 ctx->s_frame.fmt = fimc_get_format(0);
631 ctx->d_frame.fmt = fimc_get_format(0);
632
633 ret = fimc_ctrls_create(ctx);
634 if (ret)
635 goto error_fh;
636
637 /* Use separate control handler per file handle */
638 ctx->fh.ctrl_handler = &ctx->ctrls.handler;
639 file->private_data = &ctx->fh;
640 v4l2_fh_add(&ctx->fh);
641
642 /* Setup the device context for memory-to-memory mode */
643 ctx->state = FIMC_CTX_M2M;
644 ctx->flags = 0;
645 ctx->in_path = FIMC_IO_DMA;
646 ctx->out_path = FIMC_IO_DMA;
647 ctx->scaler.enabled = 1;
648
649 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(fimc->m2m.m2m_dev, ctx, queue_init);
650 if (IS_ERR(ctx->fh.m2m_ctx)) {
651 ret = PTR_ERR(ctx->fh.m2m_ctx);
652 goto error_c;
653 }
654
655 if (fimc->m2m.refcnt++ == 0)
656 set_bit(ST_M2M_RUN, &fimc->state);
657
658 ret = fimc_m2m_set_default_format(ctx);
659 if (ret < 0)
660 goto error_m2m_ctx;
661
662 mutex_unlock(&fimc->lock);
663 return 0;
664
665 error_m2m_ctx:
666 v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
667 error_c:
668 fimc_ctrls_delete(ctx);
669 v4l2_fh_del(&ctx->fh);
670 error_fh:
671 v4l2_fh_exit(&ctx->fh);
672 kfree(ctx);
673 unlock:
674 mutex_unlock(&fimc->lock);
675 return ret;
676 }
677
fimc_m2m_release(struct file * file)678 static int fimc_m2m_release(struct file *file)
679 {
680 struct fimc_ctx *ctx = fh_to_ctx(file->private_data);
681 struct fimc_dev *fimc = ctx->fimc_dev;
682
683 dbg("pid: %d, state: 0x%lx, refcnt= %d",
684 task_pid_nr(current), fimc->state, fimc->m2m.refcnt);
685
686 mutex_lock(&fimc->lock);
687
688 v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
689 fimc_ctrls_delete(ctx);
690 v4l2_fh_del(&ctx->fh);
691 v4l2_fh_exit(&ctx->fh);
692
693 if (--fimc->m2m.refcnt <= 0)
694 clear_bit(ST_M2M_RUN, &fimc->state);
695 kfree(ctx);
696
697 mutex_unlock(&fimc->lock);
698 return 0;
699 }
700
701 static const struct v4l2_file_operations fimc_m2m_fops = {
702 .owner = THIS_MODULE,
703 .open = fimc_m2m_open,
704 .release = fimc_m2m_release,
705 .poll = v4l2_m2m_fop_poll,
706 .unlocked_ioctl = video_ioctl2,
707 .mmap = v4l2_m2m_fop_mmap,
708 };
709
710 static const struct v4l2_m2m_ops m2m_ops = {
711 .device_run = fimc_device_run,
712 .job_abort = fimc_job_abort,
713 };
714
fimc_register_m2m_device(struct fimc_dev * fimc,struct v4l2_device * v4l2_dev)715 int fimc_register_m2m_device(struct fimc_dev *fimc,
716 struct v4l2_device *v4l2_dev)
717 {
718 struct video_device *vfd = &fimc->m2m.vfd;
719 int ret;
720
721 fimc->v4l2_dev = v4l2_dev;
722
723 memset(vfd, 0, sizeof(*vfd));
724 vfd->fops = &fimc_m2m_fops;
725 vfd->ioctl_ops = &fimc_m2m_ioctl_ops;
726 vfd->v4l2_dev = v4l2_dev;
727 vfd->minor = -1;
728 vfd->release = video_device_release_empty;
729 vfd->lock = &fimc->lock;
730 vfd->vfl_dir = VFL_DIR_M2M;
731 vfd->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_M2M_MPLANE;
732 set_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags);
733
734 snprintf(vfd->name, sizeof(vfd->name), "fimc.%d.m2m", fimc->id);
735 video_set_drvdata(vfd, fimc);
736
737 fimc->m2m.m2m_dev = v4l2_m2m_init(&m2m_ops);
738 if (IS_ERR(fimc->m2m.m2m_dev)) {
739 v4l2_err(v4l2_dev, "failed to initialize v4l2-m2m device\n");
740 return PTR_ERR(fimc->m2m.m2m_dev);
741 }
742
743 ret = media_entity_pads_init(&vfd->entity, 0, NULL);
744 if (ret)
745 goto err_me;
746
747 ret = video_register_device(vfd, VFL_TYPE_VIDEO, -1);
748 if (ret)
749 goto err_vd;
750
751 v4l2_info(v4l2_dev, "Registered %s as /dev/%s\n",
752 vfd->name, video_device_node_name(vfd));
753 return 0;
754
755 err_vd:
756 media_entity_cleanup(&vfd->entity);
757 err_me:
758 v4l2_m2m_release(fimc->m2m.m2m_dev);
759 return ret;
760 }
761
fimc_unregister_m2m_device(struct fimc_dev * fimc)762 void fimc_unregister_m2m_device(struct fimc_dev *fimc)
763 {
764 if (!fimc)
765 return;
766
767 if (fimc->m2m.m2m_dev)
768 v4l2_m2m_release(fimc->m2m.m2m_dev);
769
770 if (video_is_registered(&fimc->m2m.vfd)) {
771 video_unregister_device(&fimc->m2m.vfd);
772 media_entity_cleanup(&fimc->m2m.vfd.entity);
773 }
774 }
775