1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * Copyright 2020-2021 NXP
4  */
5 
6 #include <linux/init.h>
7 #include <linux/interconnect.h>
8 #include <linux/ioctl.h>
9 #include <linux/list.h>
10 #include <linux/kernel.h>
11 #include <linux/module.h>
12 #include <linux/vmalloc.h>
13 #include <linux/videodev2.h>
14 #include <media/v4l2-device.h>
15 #include <media/v4l2-event.h>
16 #include <media/v4l2-mem2mem.h>
17 #include <media/v4l2-ioctl.h>
18 #include <media/videobuf2-v4l2.h>
19 #include <media/videobuf2-dma-contig.h>
20 #include <media/videobuf2-vmalloc.h>
21 #include "vpu.h"
22 #include "vpu_defs.h"
23 #include "vpu_core.h"
24 #include "vpu_helpers.h"
25 #include "vpu_v4l2.h"
26 #include "vpu_cmds.h"
27 #include "vpu_rpc.h"
28 
29 #define VDEC_MIN_BUFFER_CAP		8
30 #define VDEC_MIN_BUFFER_OUT		8
31 
32 struct vdec_fs_info {
33 	char name[8];
34 	u32 type;
35 	u32 max_count;
36 	u32 req_count;
37 	u32 count;
38 	u32 index;
39 	u32 size;
40 	struct vpu_buffer buffer[32];
41 	u32 tag;
42 };
43 
44 struct vdec_t {
45 	u32 seq_hdr_found;
46 	struct vpu_buffer udata;
47 	struct vpu_decode_params params;
48 	struct vpu_dec_codec_info codec_info;
49 	enum vpu_codec_state state;
50 
51 	struct vpu_vb2_buffer *slots[VB2_MAX_FRAME];
52 	u32 req_frame_count;
53 	struct vdec_fs_info mbi;
54 	struct vdec_fs_info dcp;
55 	u32 seq_tag;
56 
57 	bool reset_codec;
58 	bool fixed_fmt;
59 	u32 decoded_frame_count;
60 	u32 display_frame_count;
61 	u32 sequence;
62 	u32 eos_received;
63 	bool is_source_changed;
64 	u32 source_change;
65 	u32 drain;
66 	bool aborting;
67 };
68 
69 static const struct vpu_format vdec_formats[] = {
70 	{
71 		.pixfmt = V4L2_PIX_FMT_NV12M_8L128,
72 		.mem_planes = 2,
73 		.comp_planes = 2,
74 		.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
75 		.sibling = V4L2_PIX_FMT_NV12_8L128,
76 	},
77 	{
78 		.pixfmt = V4L2_PIX_FMT_NV12_8L128,
79 		.mem_planes = 1,
80 		.comp_planes = 2,
81 		.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
82 		.sibling = V4L2_PIX_FMT_NV12M_8L128,
83 	},
84 	{
85 		.pixfmt = V4L2_PIX_FMT_NV12M_10BE_8L128,
86 		.mem_planes = 2,
87 		.comp_planes = 2,
88 		.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
89 		.sibling = V4L2_PIX_FMT_NV12_10BE_8L128,
90 	},
91 	{
92 		.pixfmt = V4L2_PIX_FMT_NV12_10BE_8L128,
93 		.mem_planes = 1,
94 		.comp_planes = 2,
95 		.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
96 		.sibling = V4L2_PIX_FMT_NV12M_10BE_8L128
97 	},
98 	{
99 		.pixfmt = V4L2_PIX_FMT_H264,
100 		.mem_planes = 1,
101 		.comp_planes = 1,
102 		.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
103 		.flags = V4L2_FMT_FLAG_DYN_RESOLUTION | V4L2_FMT_FLAG_COMPRESSED
104 	},
105 	{
106 		.pixfmt = V4L2_PIX_FMT_H264_MVC,
107 		.mem_planes = 1,
108 		.comp_planes = 1,
109 		.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
110 		.flags = V4L2_FMT_FLAG_DYN_RESOLUTION | V4L2_FMT_FLAG_COMPRESSED
111 	},
112 	{
113 		.pixfmt = V4L2_PIX_FMT_HEVC,
114 		.mem_planes = 1,
115 		.comp_planes = 1,
116 		.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
117 		.flags = V4L2_FMT_FLAG_DYN_RESOLUTION | V4L2_FMT_FLAG_COMPRESSED
118 	},
119 	{
120 		.pixfmt = V4L2_PIX_FMT_VC1_ANNEX_G,
121 		.mem_planes = 1,
122 		.comp_planes = 1,
123 		.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
124 		.flags = V4L2_FMT_FLAG_DYN_RESOLUTION | V4L2_FMT_FLAG_COMPRESSED
125 	},
126 	{
127 		.pixfmt = V4L2_PIX_FMT_VC1_ANNEX_L,
128 		.mem_planes = 1,
129 		.comp_planes = 1,
130 		.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
131 		.flags = V4L2_FMT_FLAG_COMPRESSED
132 	},
133 	{
134 		.pixfmt = V4L2_PIX_FMT_MPEG2,
135 		.mem_planes = 1,
136 		.comp_planes = 1,
137 		.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
138 		.flags = V4L2_FMT_FLAG_DYN_RESOLUTION | V4L2_FMT_FLAG_COMPRESSED
139 	},
140 	{
141 		.pixfmt = V4L2_PIX_FMT_MPEG4,
142 		.mem_planes = 1,
143 		.comp_planes = 1,
144 		.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
145 		.flags = V4L2_FMT_FLAG_DYN_RESOLUTION | V4L2_FMT_FLAG_COMPRESSED
146 	},
147 	{
148 		.pixfmt = V4L2_PIX_FMT_XVID,
149 		.mem_planes = 1,
150 		.comp_planes = 1,
151 		.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
152 		.flags = V4L2_FMT_FLAG_DYN_RESOLUTION | V4L2_FMT_FLAG_COMPRESSED
153 	},
154 	{
155 		.pixfmt = V4L2_PIX_FMT_VP8,
156 		.mem_planes = 1,
157 		.comp_planes = 1,
158 		.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
159 		.flags = V4L2_FMT_FLAG_DYN_RESOLUTION | V4L2_FMT_FLAG_COMPRESSED
160 	},
161 	{
162 		.pixfmt = V4L2_PIX_FMT_H263,
163 		.mem_planes = 1,
164 		.comp_planes = 1,
165 		.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
166 		.flags = V4L2_FMT_FLAG_DYN_RESOLUTION | V4L2_FMT_FLAG_COMPRESSED
167 	},
168 	{
169 		.pixfmt = V4L2_PIX_FMT_SPK,
170 		.mem_planes = 1,
171 		.comp_planes = 1,
172 		.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
173 		.flags = V4L2_FMT_FLAG_DYN_RESOLUTION | V4L2_FMT_FLAG_COMPRESSED
174 	},
175 	{
176 		.pixfmt = V4L2_PIX_FMT_RV30,
177 		.mem_planes = 1,
178 		.comp_planes = 1,
179 		.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
180 		.flags = V4L2_FMT_FLAG_DYN_RESOLUTION | V4L2_FMT_FLAG_COMPRESSED
181 	},
182 	{
183 		.pixfmt = V4L2_PIX_FMT_RV40,
184 		.mem_planes = 1,
185 		.comp_planes = 1,
186 		.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
187 		.flags = V4L2_FMT_FLAG_DYN_RESOLUTION | V4L2_FMT_FLAG_COMPRESSED
188 	},
189 	{0, 0, 0, 0},
190 };
191 
192 static int vdec_op_s_ctrl(struct v4l2_ctrl *ctrl)
193 {
194 	struct vpu_inst *inst = ctrl_to_inst(ctrl);
195 	struct vdec_t *vdec = inst->priv;
196 	int ret = 0;
197 
198 	vpu_inst_lock(inst);
199 	switch (ctrl->id) {
200 	case V4L2_CID_MPEG_VIDEO_DEC_DISPLAY_DELAY_ENABLE:
201 		vdec->params.display_delay_enable = ctrl->val;
202 		break;
203 	case V4L2_CID_MPEG_VIDEO_DEC_DISPLAY_DELAY:
204 		vdec->params.display_delay = ctrl->val;
205 		break;
206 	default:
207 		ret = -EINVAL;
208 		break;
209 	}
210 	vpu_inst_unlock(inst);
211 
212 	return ret;
213 }
214 
215 static const struct v4l2_ctrl_ops vdec_ctrl_ops = {
216 	.s_ctrl = vdec_op_s_ctrl,
217 	.g_volatile_ctrl = vpu_helper_g_volatile_ctrl,
218 };
219 
220 static int vdec_ctrl_init(struct vpu_inst *inst)
221 {
222 	struct v4l2_ctrl *ctrl;
223 	int ret;
224 
225 	ret = v4l2_ctrl_handler_init(&inst->ctrl_handler, 20);
226 	if (ret)
227 		return ret;
228 
229 	v4l2_ctrl_new_std(&inst->ctrl_handler, &vdec_ctrl_ops,
230 			  V4L2_CID_MPEG_VIDEO_DEC_DISPLAY_DELAY,
231 			  0, 0, 1, 0);
232 
233 	v4l2_ctrl_new_std(&inst->ctrl_handler, &vdec_ctrl_ops,
234 			  V4L2_CID_MPEG_VIDEO_DEC_DISPLAY_DELAY_ENABLE,
235 			  0, 1, 1, 0);
236 
237 	ctrl = v4l2_ctrl_new_std(&inst->ctrl_handler, &vdec_ctrl_ops,
238 				 V4L2_CID_MIN_BUFFERS_FOR_CAPTURE, 1, 32, 1, 2);
239 	if (ctrl)
240 		ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;
241 
242 	ctrl = v4l2_ctrl_new_std(&inst->ctrl_handler, &vdec_ctrl_ops,
243 				 V4L2_CID_MIN_BUFFERS_FOR_OUTPUT, 1, 32, 1, 2);
244 	if (ctrl)
245 		ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;
246 
247 	if (inst->ctrl_handler.error) {
248 		ret = inst->ctrl_handler.error;
249 		v4l2_ctrl_handler_free(&inst->ctrl_handler);
250 		return ret;
251 	}
252 
253 	ret = v4l2_ctrl_handler_setup(&inst->ctrl_handler);
254 	if (ret) {
255 		dev_err(inst->dev, "[%d] setup ctrls fail, ret = %d\n", inst->id, ret);
256 		v4l2_ctrl_handler_free(&inst->ctrl_handler);
257 		return ret;
258 	}
259 
260 	return 0;
261 }
262 
263 static void vdec_handle_resolution_change(struct vpu_inst *inst)
264 {
265 	struct vdec_t *vdec = inst->priv;
266 	struct vb2_queue *q;
267 
268 	if (!inst->fh.m2m_ctx)
269 		return;
270 
271 	if (inst->state != VPU_CODEC_STATE_DYAMIC_RESOLUTION_CHANGE)
272 		return;
273 	if (!vdec->source_change)
274 		return;
275 
276 	q = v4l2_m2m_get_dst_vq(inst->fh.m2m_ctx);
277 	if (!list_empty(&q->done_list))
278 		return;
279 
280 	vdec->source_change--;
281 	vpu_notify_source_change(inst);
282 	vpu_set_last_buffer_dequeued(inst, false);
283 }
284 
285 static int vdec_update_state(struct vpu_inst *inst, enum vpu_codec_state state, u32 force)
286 {
287 	struct vdec_t *vdec = inst->priv;
288 	enum vpu_codec_state pre_state = inst->state;
289 
290 	if (state == VPU_CODEC_STATE_SEEK) {
291 		if (inst->state == VPU_CODEC_STATE_DYAMIC_RESOLUTION_CHANGE)
292 			vdec->state = inst->state;
293 		else
294 			vdec->state = VPU_CODEC_STATE_ACTIVE;
295 	}
296 	if (inst->state != VPU_CODEC_STATE_SEEK || force)
297 		inst->state = state;
298 	else if (state == VPU_CODEC_STATE_DYAMIC_RESOLUTION_CHANGE)
299 		vdec->state = VPU_CODEC_STATE_DYAMIC_RESOLUTION_CHANGE;
300 
301 	if (inst->state != pre_state)
302 		vpu_trace(inst->dev, "[%d] %d -> %d\n", inst->id, pre_state, inst->state);
303 
304 	if (inst->state == VPU_CODEC_STATE_DYAMIC_RESOLUTION_CHANGE)
305 		vdec_handle_resolution_change(inst);
306 
307 	return 0;
308 }
309 
310 static void vdec_set_last_buffer_dequeued(struct vpu_inst *inst)
311 {
312 	struct vdec_t *vdec = inst->priv;
313 
314 	if (inst->state == VPU_CODEC_STATE_DYAMIC_RESOLUTION_CHANGE)
315 		return;
316 
317 	if (vdec->eos_received) {
318 		if (!vpu_set_last_buffer_dequeued(inst, true)) {
319 			vdec->eos_received--;
320 			vdec_update_state(inst, VPU_CODEC_STATE_DRAIN, 0);
321 		}
322 	}
323 }
324 
325 static int vdec_querycap(struct file *file, void *fh, struct v4l2_capability *cap)
326 {
327 	strscpy(cap->driver, "amphion-vpu", sizeof(cap->driver));
328 	strscpy(cap->card, "amphion vpu decoder", sizeof(cap->card));
329 	strscpy(cap->bus_info, "platform: amphion-vpu", sizeof(cap->bus_info));
330 
331 	return 0;
332 }
333 
334 static int vdec_enum_fmt(struct file *file, void *fh, struct v4l2_fmtdesc *f)
335 {
336 	struct vpu_inst *inst = to_inst(file);
337 	struct vdec_t *vdec = inst->priv;
338 	const struct vpu_format *fmt;
339 	int ret = -EINVAL;
340 
341 	vpu_inst_lock(inst);
342 	if (V4L2_TYPE_IS_CAPTURE(f->type) && vdec->fixed_fmt) {
343 		fmt = vpu_get_format(inst, f->type);
344 		if (f->index == 1)
345 			fmt = vpu_helper_find_sibling(inst, f->type, fmt->pixfmt);
346 		if (f->index > 1)
347 			fmt = NULL;
348 	} else {
349 		fmt = vpu_helper_enum_format(inst, f->type, f->index);
350 	}
351 	if (!fmt)
352 		goto exit;
353 
354 	memset(f->reserved, 0, sizeof(f->reserved));
355 	f->pixelformat = fmt->pixfmt;
356 	f->flags = fmt->flags;
357 	ret = 0;
358 exit:
359 	vpu_inst_unlock(inst);
360 	return ret;
361 }
362 
363 static int vdec_g_fmt(struct file *file, void *fh, struct v4l2_format *f)
364 {
365 	struct vpu_inst *inst = to_inst(file);
366 	struct vdec_t *vdec = inst->priv;
367 	struct v4l2_pix_format_mplane *pixmp = &f->fmt.pix_mp;
368 	struct vpu_format *cur_fmt;
369 	int i;
370 
371 	vpu_inst_lock(inst);
372 	cur_fmt = vpu_get_format(inst, f->type);
373 
374 	pixmp->pixelformat = cur_fmt->pixfmt;
375 	pixmp->num_planes = cur_fmt->mem_planes;
376 	pixmp->width = cur_fmt->width;
377 	pixmp->height = cur_fmt->height;
378 	pixmp->field = cur_fmt->field;
379 	pixmp->flags = cur_fmt->flags;
380 	for (i = 0; i < pixmp->num_planes; i++) {
381 		pixmp->plane_fmt[i].bytesperline = cur_fmt->bytesperline[i];
382 		pixmp->plane_fmt[i].sizeimage = vpu_get_fmt_plane_size(cur_fmt, i);
383 	}
384 
385 	f->fmt.pix_mp.colorspace = vdec->codec_info.color_primaries;
386 	f->fmt.pix_mp.xfer_func = vdec->codec_info.transfer_chars;
387 	f->fmt.pix_mp.ycbcr_enc = vdec->codec_info.matrix_coeffs;
388 	f->fmt.pix_mp.quantization = vdec->codec_info.full_range;
389 	vpu_inst_unlock(inst);
390 
391 	return 0;
392 }
393 
394 static int vdec_try_fmt(struct file *file, void *fh, struct v4l2_format *f)
395 {
396 	struct vpu_inst *inst = to_inst(file);
397 	struct vdec_t *vdec = inst->priv;
398 	struct vpu_format fmt;
399 
400 	vpu_inst_lock(inst);
401 	if (V4L2_TYPE_IS_CAPTURE(f->type) && vdec->fixed_fmt) {
402 		struct vpu_format *cap_fmt = vpu_get_format(inst, f->type);
403 
404 		if (!vpu_helper_match_format(inst, cap_fmt->type, cap_fmt->pixfmt,
405 					     f->fmt.pix_mp.pixelformat))
406 			f->fmt.pix_mp.pixelformat = cap_fmt->pixfmt;
407 	}
408 
409 	vpu_try_fmt_common(inst, f, &fmt);
410 
411 	if (vdec->fixed_fmt) {
412 		f->fmt.pix_mp.colorspace = vdec->codec_info.color_primaries;
413 		f->fmt.pix_mp.xfer_func = vdec->codec_info.transfer_chars;
414 		f->fmt.pix_mp.ycbcr_enc = vdec->codec_info.matrix_coeffs;
415 		f->fmt.pix_mp.quantization = vdec->codec_info.full_range;
416 	} else {
417 		f->fmt.pix_mp.colorspace = V4L2_COLORSPACE_DEFAULT;
418 		f->fmt.pix_mp.xfer_func = V4L2_XFER_FUNC_DEFAULT;
419 		f->fmt.pix_mp.ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
420 		f->fmt.pix_mp.quantization = V4L2_QUANTIZATION_DEFAULT;
421 	}
422 	vpu_inst_unlock(inst);
423 
424 	return 0;
425 }
426 
427 static int vdec_s_fmt_common(struct vpu_inst *inst, struct v4l2_format *f)
428 {
429 	struct v4l2_pix_format_mplane *pixmp = &f->fmt.pix_mp;
430 	struct vpu_format fmt;
431 	struct vpu_format *cur_fmt;
432 	struct vb2_queue *q;
433 	struct vdec_t *vdec = inst->priv;
434 	int i;
435 
436 	if (!inst->fh.m2m_ctx)
437 		return -EINVAL;
438 
439 	q = v4l2_m2m_get_vq(inst->fh.m2m_ctx, f->type);
440 	if (!q)
441 		return -EINVAL;
442 	if (vb2_is_busy(q))
443 		return -EBUSY;
444 
445 	if (vpu_try_fmt_common(inst, f, &fmt))
446 		return -EINVAL;
447 
448 	cur_fmt = vpu_get_format(inst, f->type);
449 	if (V4L2_TYPE_IS_OUTPUT(f->type) && inst->state != VPU_CODEC_STATE_DEINIT) {
450 		if (cur_fmt->pixfmt != fmt.pixfmt) {
451 			vdec->reset_codec = true;
452 			vdec->fixed_fmt = false;
453 		}
454 	}
455 	if (V4L2_TYPE_IS_OUTPUT(f->type) || !vdec->fixed_fmt) {
456 		memcpy(cur_fmt, &fmt, sizeof(*cur_fmt));
457 	} else {
458 		if (vpu_helper_match_format(inst, f->type, cur_fmt->pixfmt, pixmp->pixelformat)) {
459 			cur_fmt->pixfmt = fmt.pixfmt;
460 			cur_fmt->mem_planes = fmt.mem_planes;
461 		}
462 		pixmp->pixelformat = cur_fmt->pixfmt;
463 		pixmp->num_planes = cur_fmt->mem_planes;
464 		pixmp->width = cur_fmt->width;
465 		pixmp->height = cur_fmt->height;
466 		for (i = 0; i < pixmp->num_planes; i++) {
467 			pixmp->plane_fmt[i].bytesperline = cur_fmt->bytesperline[i];
468 			pixmp->plane_fmt[i].sizeimage = vpu_get_fmt_plane_size(cur_fmt, i);
469 		}
470 		pixmp->field = cur_fmt->field;
471 	}
472 
473 	if (!vdec->fixed_fmt) {
474 		if (V4L2_TYPE_IS_OUTPUT(f->type)) {
475 			vdec->params.codec_format = cur_fmt->pixfmt;
476 			vdec->codec_info.color_primaries = f->fmt.pix_mp.colorspace;
477 			vdec->codec_info.transfer_chars = f->fmt.pix_mp.xfer_func;
478 			vdec->codec_info.matrix_coeffs = f->fmt.pix_mp.ycbcr_enc;
479 			vdec->codec_info.full_range = f->fmt.pix_mp.quantization;
480 		} else {
481 			vdec->params.output_format = cur_fmt->pixfmt;
482 			inst->crop.left = 0;
483 			inst->crop.top = 0;
484 			inst->crop.width = cur_fmt->width;
485 			inst->crop.height = cur_fmt->height;
486 		}
487 	}
488 
489 	vpu_trace(inst->dev, "[%d] %c%c%c%c %dx%d\n", inst->id,
490 		  f->fmt.pix_mp.pixelformat,
491 		  f->fmt.pix_mp.pixelformat >> 8,
492 		  f->fmt.pix_mp.pixelformat >> 16,
493 		  f->fmt.pix_mp.pixelformat >> 24,
494 		  f->fmt.pix_mp.width,
495 		  f->fmt.pix_mp.height);
496 
497 	return 0;
498 }
499 
500 static int vdec_s_fmt(struct file *file, void *fh, struct v4l2_format *f)
501 {
502 	struct vpu_inst *inst = to_inst(file);
503 	struct v4l2_pix_format_mplane *pixmp = &f->fmt.pix_mp;
504 	struct vdec_t *vdec = inst->priv;
505 	int ret = 0;
506 
507 	vpu_inst_lock(inst);
508 	ret = vdec_s_fmt_common(inst, f);
509 	if (ret)
510 		goto exit;
511 
512 	if (V4L2_TYPE_IS_OUTPUT(f->type) && !vdec->fixed_fmt) {
513 		struct v4l2_format fc;
514 
515 		memset(&fc, 0, sizeof(fc));
516 		fc.type = inst->cap_format.type;
517 		fc.fmt.pix_mp.pixelformat = inst->cap_format.pixfmt;
518 		fc.fmt.pix_mp.width = pixmp->width;
519 		fc.fmt.pix_mp.height = pixmp->height;
520 		vdec_s_fmt_common(inst, &fc);
521 	}
522 
523 	f->fmt.pix_mp.colorspace = vdec->codec_info.color_primaries;
524 	f->fmt.pix_mp.xfer_func = vdec->codec_info.transfer_chars;
525 	f->fmt.pix_mp.ycbcr_enc = vdec->codec_info.matrix_coeffs;
526 	f->fmt.pix_mp.quantization = vdec->codec_info.full_range;
527 
528 exit:
529 	vpu_inst_unlock(inst);
530 	return ret;
531 }
532 
533 static int vdec_g_selection(struct file *file, void *fh, struct v4l2_selection *s)
534 {
535 	struct vpu_inst *inst = to_inst(file);
536 
537 	if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
538 		return -EINVAL;
539 
540 	switch (s->target) {
541 	case V4L2_SEL_TGT_COMPOSE:
542 	case V4L2_SEL_TGT_COMPOSE_DEFAULT:
543 	case V4L2_SEL_TGT_COMPOSE_PADDED:
544 		s->r = inst->crop;
545 		break;
546 	case V4L2_SEL_TGT_COMPOSE_BOUNDS:
547 		s->r.left = 0;
548 		s->r.top = 0;
549 		s->r.width = inst->cap_format.width;
550 		s->r.height = inst->cap_format.height;
551 		break;
552 	default:
553 		return -EINVAL;
554 	}
555 
556 	return 0;
557 }
558 
559 static int vdec_drain(struct vpu_inst *inst)
560 {
561 	struct vdec_t *vdec = inst->priv;
562 
563 	if (!inst->fh.m2m_ctx)
564 		return 0;
565 
566 	if (!vdec->drain)
567 		return 0;
568 
569 	if (!vpu_is_source_empty(inst))
570 		return 0;
571 
572 	if (!vdec->params.frame_count) {
573 		vpu_set_last_buffer_dequeued(inst, true);
574 		return 0;
575 	}
576 
577 	vpu_iface_add_scode(inst, SCODE_PADDING_EOS);
578 	vdec->params.end_flag = 1;
579 	vpu_iface_set_decode_params(inst, &vdec->params, 1);
580 	vdec->drain = 0;
581 	vpu_trace(inst->dev, "[%d] frame_count = %d\n", inst->id, vdec->params.frame_count);
582 
583 	return 0;
584 }
585 
586 static int vdec_cmd_start(struct vpu_inst *inst)
587 {
588 	struct vdec_t *vdec = inst->priv;
589 
590 	switch (inst->state) {
591 	case VPU_CODEC_STATE_STARTED:
592 	case VPU_CODEC_STATE_DRAIN:
593 	case VPU_CODEC_STATE_DYAMIC_RESOLUTION_CHANGE:
594 		vdec_update_state(inst, VPU_CODEC_STATE_ACTIVE, 0);
595 		break;
596 	default:
597 		break;
598 	}
599 	vpu_process_capture_buffer(inst);
600 	if (vdec->eos_received)
601 		vdec_set_last_buffer_dequeued(inst);
602 	return 0;
603 }
604 
605 static int vdec_cmd_stop(struct vpu_inst *inst)
606 {
607 	struct vdec_t *vdec = inst->priv;
608 
609 	vpu_trace(inst->dev, "[%d]\n", inst->id);
610 
611 	if (inst->state == VPU_CODEC_STATE_DEINIT) {
612 		vpu_set_last_buffer_dequeued(inst, true);
613 	} else {
614 		vdec->drain = 1;
615 		vdec_drain(inst);
616 	}
617 
618 	return 0;
619 }
620 
621 static int vdec_decoder_cmd(struct file *file, void *fh, struct v4l2_decoder_cmd *cmd)
622 {
623 	struct vpu_inst *inst = to_inst(file);
624 	int ret;
625 
626 	ret = v4l2_m2m_ioctl_try_decoder_cmd(file, fh, cmd);
627 	if (ret)
628 		return ret;
629 
630 	vpu_inst_lock(inst);
631 	switch (cmd->cmd) {
632 	case V4L2_DEC_CMD_START:
633 		vdec_cmd_start(inst);
634 		break;
635 	case V4L2_DEC_CMD_STOP:
636 		vdec_cmd_stop(inst);
637 		break;
638 	default:
639 		break;
640 	}
641 	vpu_inst_unlock(inst);
642 
643 	return 0;
644 }
645 
646 static int vdec_subscribe_event(struct v4l2_fh *fh, const struct v4l2_event_subscription *sub)
647 {
648 	switch (sub->type) {
649 	case V4L2_EVENT_EOS:
650 		return v4l2_event_subscribe(fh, sub, 0, NULL);
651 	case V4L2_EVENT_SOURCE_CHANGE:
652 		return v4l2_src_change_event_subscribe(fh, sub);
653 	case V4L2_EVENT_CTRL:
654 		return v4l2_ctrl_subscribe_event(fh, sub);
655 	default:
656 		return -EINVAL;
657 	}
658 
659 	return 0;
660 }
661 
662 static const struct v4l2_ioctl_ops vdec_ioctl_ops = {
663 	.vidioc_querycap               = vdec_querycap,
664 	.vidioc_enum_fmt_vid_cap       = vdec_enum_fmt,
665 	.vidioc_enum_fmt_vid_out       = vdec_enum_fmt,
666 	.vidioc_g_fmt_vid_cap_mplane   = vdec_g_fmt,
667 	.vidioc_g_fmt_vid_out_mplane   = vdec_g_fmt,
668 	.vidioc_try_fmt_vid_cap_mplane = vdec_try_fmt,
669 	.vidioc_try_fmt_vid_out_mplane = vdec_try_fmt,
670 	.vidioc_s_fmt_vid_cap_mplane   = vdec_s_fmt,
671 	.vidioc_s_fmt_vid_out_mplane   = vdec_s_fmt,
672 	.vidioc_g_selection            = vdec_g_selection,
673 	.vidioc_try_decoder_cmd        = v4l2_m2m_ioctl_try_decoder_cmd,
674 	.vidioc_decoder_cmd            = vdec_decoder_cmd,
675 	.vidioc_subscribe_event        = vdec_subscribe_event,
676 	.vidioc_unsubscribe_event      = v4l2_event_unsubscribe,
677 	.vidioc_reqbufs                = v4l2_m2m_ioctl_reqbufs,
678 	.vidioc_create_bufs	       = v4l2_m2m_ioctl_create_bufs,
679 	.vidioc_prepare_buf	       = v4l2_m2m_ioctl_prepare_buf,
680 	.vidioc_querybuf               = v4l2_m2m_ioctl_querybuf,
681 	.vidioc_qbuf                   = v4l2_m2m_ioctl_qbuf,
682 	.vidioc_expbuf                 = v4l2_m2m_ioctl_expbuf,
683 	.vidioc_dqbuf                  = v4l2_m2m_ioctl_dqbuf,
684 	.vidioc_streamon               = v4l2_m2m_ioctl_streamon,
685 	.vidioc_streamoff              = v4l2_m2m_ioctl_streamoff,
686 };
687 
688 static bool vdec_check_ready(struct vpu_inst *inst, unsigned int type)
689 {
690 	struct vdec_t *vdec = inst->priv;
691 
692 	if (V4L2_TYPE_IS_OUTPUT(type))
693 		return true;
694 
695 	if (vdec->req_frame_count)
696 		return true;
697 
698 	return false;
699 }
700 
701 static struct vb2_v4l2_buffer *vdec_get_src_buffer(struct vpu_inst *inst, u32 count)
702 {
703 	if (count > 1)
704 		vpu_skip_frame(inst, count - 1);
705 
706 	return vpu_next_src_buf(inst);
707 }
708 
709 static int vdec_frame_decoded(struct vpu_inst *inst, void *arg)
710 {
711 	struct vdec_t *vdec = inst->priv;
712 	struct vpu_dec_pic_info *info = arg;
713 	struct vpu_vb2_buffer *vpu_buf;
714 	struct vb2_v4l2_buffer *vbuf;
715 	struct vb2_v4l2_buffer *src_buf;
716 	int ret = 0;
717 
718 	if (!info || info->id >= ARRAY_SIZE(vdec->slots))
719 		return -EINVAL;
720 
721 	vpu_inst_lock(inst);
722 	vpu_buf = vdec->slots[info->id];
723 	if (!vpu_buf) {
724 		dev_err(inst->dev, "[%d] decoded invalid frame[%d]\n", inst->id, info->id);
725 		ret = -EINVAL;
726 		goto exit;
727 	}
728 	vbuf = &vpu_buf->m2m_buf.vb;
729 	src_buf = vdec_get_src_buffer(inst, info->consumed_count);
730 	if (src_buf) {
731 		v4l2_m2m_buf_copy_metadata(src_buf, vbuf, true);
732 		if (info->consumed_count) {
733 			v4l2_m2m_src_buf_remove(inst->fh.m2m_ctx);
734 			vpu_set_buffer_state(src_buf, VPU_BUF_STATE_IDLE);
735 			v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
736 		} else {
737 			vpu_set_buffer_state(src_buf, VPU_BUF_STATE_DECODED);
738 		}
739 	}
740 	if (vpu_get_buffer_state(vbuf) == VPU_BUF_STATE_DECODED)
741 		dev_info(inst->dev, "[%d] buf[%d] has been decoded\n", inst->id, info->id);
742 	vpu_set_buffer_state(vbuf, VPU_BUF_STATE_DECODED);
743 	vdec->decoded_frame_count++;
744 exit:
745 	vpu_inst_unlock(inst);
746 
747 	return ret;
748 }
749 
750 static struct vpu_vb2_buffer *vdec_find_buffer(struct vpu_inst *inst, u32 luma)
751 {
752 	struct vdec_t *vdec = inst->priv;
753 	int i;
754 
755 	for (i = 0; i < ARRAY_SIZE(vdec->slots); i++) {
756 		if (!vdec->slots[i])
757 			continue;
758 		if (luma == vdec->slots[i]->luma)
759 			return vdec->slots[i];
760 	}
761 
762 	return NULL;
763 }
764 
765 static void vdec_buf_done(struct vpu_inst *inst, struct vpu_frame_info *frame)
766 {
767 	struct vdec_t *vdec = inst->priv;
768 	struct vpu_format *cur_fmt;
769 	struct vpu_vb2_buffer *vpu_buf;
770 	struct vb2_v4l2_buffer *vbuf;
771 	u32 sequence;
772 	int i;
773 
774 	if (!frame)
775 		return;
776 
777 	vpu_inst_lock(inst);
778 	sequence = vdec->sequence++;
779 	vpu_buf = vdec_find_buffer(inst, frame->luma);
780 	vpu_inst_unlock(inst);
781 	if (!vpu_buf) {
782 		dev_err(inst->dev, "[%d] can't find buffer, id = %d, addr = 0x%x\n",
783 			inst->id, frame->id, frame->luma);
784 		return;
785 	}
786 	if (frame->skipped) {
787 		dev_dbg(inst->dev, "[%d] frame skip\n", inst->id);
788 		return;
789 	}
790 
791 	cur_fmt = vpu_get_format(inst, inst->cap_format.type);
792 	vbuf = &vpu_buf->m2m_buf.vb;
793 	if (vbuf->vb2_buf.index != frame->id)
794 		dev_err(inst->dev, "[%d] buffer id(%d, %d) dismatch\n",
795 			inst->id, vbuf->vb2_buf.index, frame->id);
796 
797 	if (vpu_get_buffer_state(vbuf) != VPU_BUF_STATE_DECODED)
798 		dev_err(inst->dev, "[%d] buffer(%d) ready without decoded\n", inst->id, frame->id);
799 	vpu_set_buffer_state(vbuf, VPU_BUF_STATE_READY);
800 	for (i = 0; i < vbuf->vb2_buf.num_planes; i++)
801 		vb2_set_plane_payload(&vbuf->vb2_buf, i, vpu_get_fmt_plane_size(cur_fmt, i));
802 	vbuf->field = cur_fmt->field;
803 	vbuf->sequence = sequence;
804 	dev_dbg(inst->dev, "[%d][OUTPUT TS]%32lld\n", inst->id, vbuf->vb2_buf.timestamp);
805 
806 	v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_DONE);
807 	vpu_inst_lock(inst);
808 	vdec->display_frame_count++;
809 	vpu_inst_unlock(inst);
810 	dev_dbg(inst->dev, "[%d] decoded : %d, display : %d, sequence : %d\n",
811 		inst->id, vdec->decoded_frame_count, vdec->display_frame_count, vdec->sequence);
812 }
813 
814 static void vdec_stop_done(struct vpu_inst *inst)
815 {
816 	struct vdec_t *vdec = inst->priv;
817 
818 	vpu_inst_lock(inst);
819 	vdec_update_state(inst, VPU_CODEC_STATE_DEINIT, 0);
820 	vdec->seq_hdr_found = 0;
821 	vdec->req_frame_count = 0;
822 	vdec->reset_codec = false;
823 	vdec->fixed_fmt = false;
824 	vdec->params.end_flag = 0;
825 	vdec->drain = 0;
826 	vdec->params.frame_count = 0;
827 	vdec->decoded_frame_count = 0;
828 	vdec->display_frame_count = 0;
829 	vdec->sequence = 0;
830 	vdec->eos_received = 0;
831 	vdec->is_source_changed = false;
832 	vdec->source_change = 0;
833 	inst->total_input_count = 0;
834 	vpu_inst_unlock(inst);
835 }
836 
837 static bool vdec_check_source_change(struct vpu_inst *inst)
838 {
839 	struct vdec_t *vdec = inst->priv;
840 	const struct vpu_format *sibling;
841 
842 	if (!inst->fh.m2m_ctx)
843 		return false;
844 
845 	if (vdec->reset_codec)
846 		return false;
847 
848 	sibling = vpu_helper_find_sibling(inst, inst->cap_format.type, inst->cap_format.pixfmt);
849 	if (sibling && vdec->codec_info.pixfmt == sibling->pixfmt)
850 		vdec->codec_info.pixfmt = inst->cap_format.pixfmt;
851 
852 	if (!vb2_is_streaming(v4l2_m2m_get_dst_vq(inst->fh.m2m_ctx)))
853 		return true;
854 	if (inst->cap_format.pixfmt != vdec->codec_info.pixfmt)
855 		return true;
856 	if (inst->cap_format.width != vdec->codec_info.decoded_width)
857 		return true;
858 	if (inst->cap_format.height != vdec->codec_info.decoded_height)
859 		return true;
860 	if (vpu_get_num_buffers(inst, inst->cap_format.type) < inst->min_buffer_cap)
861 		return true;
862 	if (inst->crop.left != vdec->codec_info.offset_x)
863 		return true;
864 	if (inst->crop.top != vdec->codec_info.offset_y)
865 		return true;
866 	if (inst->crop.width != vdec->codec_info.width)
867 		return true;
868 	if (inst->crop.height != vdec->codec_info.height)
869 		return true;
870 
871 	return false;
872 }
873 
874 static void vdec_init_fmt(struct vpu_inst *inst)
875 {
876 	struct vdec_t *vdec = inst->priv;
877 	struct v4l2_format f;
878 
879 	memset(&f, 0, sizeof(f));
880 	f.type = inst->cap_format.type;
881 	f.fmt.pix_mp.pixelformat = vdec->codec_info.pixfmt;
882 	f.fmt.pix_mp.width = vdec->codec_info.decoded_width;
883 	f.fmt.pix_mp.height = vdec->codec_info.decoded_height;
884 	if (vdec->codec_info.progressive)
885 		f.fmt.pix_mp.field = V4L2_FIELD_NONE;
886 	else
887 		f.fmt.pix_mp.field = V4L2_FIELD_SEQ_TB;
888 	vpu_try_fmt_common(inst, &f, &inst->cap_format);
889 
890 	inst->out_format.width = vdec->codec_info.width;
891 	inst->out_format.height = vdec->codec_info.height;
892 }
893 
894 static void vdec_init_crop(struct vpu_inst *inst)
895 {
896 	struct vdec_t *vdec = inst->priv;
897 
898 	inst->crop.left = vdec->codec_info.offset_x;
899 	inst->crop.top = vdec->codec_info.offset_y;
900 	inst->crop.width = vdec->codec_info.width;
901 	inst->crop.height = vdec->codec_info.height;
902 }
903 
904 static void vdec_init_mbi(struct vpu_inst *inst)
905 {
906 	struct vdec_t *vdec = inst->priv;
907 
908 	vdec->mbi.size = vdec->codec_info.mbi_size;
909 	vdec->mbi.max_count = ARRAY_SIZE(vdec->mbi.buffer);
910 	scnprintf(vdec->mbi.name, sizeof(vdec->mbi.name), "mbi");
911 	vdec->mbi.type = MEM_RES_MBI;
912 	vdec->mbi.tag = vdec->seq_tag;
913 }
914 
915 static void vdec_init_dcp(struct vpu_inst *inst)
916 {
917 	struct vdec_t *vdec = inst->priv;
918 
919 	vdec->dcp.size = vdec->codec_info.dcp_size;
920 	vdec->dcp.max_count = ARRAY_SIZE(vdec->dcp.buffer);
921 	scnprintf(vdec->dcp.name, sizeof(vdec->dcp.name), "dcp");
922 	vdec->dcp.type = MEM_RES_DCP;
923 	vdec->dcp.tag = vdec->seq_tag;
924 }
925 
926 static void vdec_request_one_fs(struct vdec_fs_info *fs)
927 {
928 	fs->req_count++;
929 	if (fs->req_count > fs->max_count)
930 		fs->req_count = fs->max_count;
931 }
932 
933 static int vdec_alloc_fs_buffer(struct vpu_inst *inst, struct vdec_fs_info *fs)
934 {
935 	struct vpu_buffer *buffer;
936 
937 	if (!fs->size)
938 		return -EINVAL;
939 
940 	if (fs->count >= fs->req_count)
941 		return -EINVAL;
942 
943 	buffer = &fs->buffer[fs->count];
944 	if (buffer->virt && buffer->length >= fs->size)
945 		return 0;
946 
947 	vpu_free_dma(buffer);
948 	buffer->length = fs->size;
949 	return vpu_alloc_dma(inst->core, buffer);
950 }
951 
952 static void vdec_alloc_fs(struct vpu_inst *inst, struct vdec_fs_info *fs)
953 {
954 	int ret;
955 
956 	while (fs->count < fs->req_count) {
957 		ret = vdec_alloc_fs_buffer(inst, fs);
958 		if (ret)
959 			break;
960 		fs->count++;
961 	}
962 }
963 
964 static void vdec_clear_fs(struct vdec_fs_info *fs)
965 {
966 	u32 i;
967 
968 	if (!fs)
969 		return;
970 
971 	for (i = 0; i < ARRAY_SIZE(fs->buffer); i++)
972 		vpu_free_dma(&fs->buffer[i]);
973 	memset(fs, 0, sizeof(*fs));
974 }
975 
976 static int vdec_response_fs(struct vpu_inst *inst, struct vdec_fs_info *fs)
977 {
978 	struct vpu_fs_info info;
979 	int ret;
980 
981 	if (fs->index >= fs->count)
982 		return 0;
983 
984 	memset(&info, 0, sizeof(info));
985 	info.id = fs->index;
986 	info.type = fs->type;
987 	info.tag = fs->tag;
988 	info.luma_addr = fs->buffer[fs->index].phys;
989 	info.luma_size = fs->buffer[fs->index].length;
990 	ret = vpu_session_alloc_fs(inst, &info);
991 	if (ret)
992 		return ret;
993 
994 	fs->index++;
995 	return 0;
996 }
997 
998 static int vdec_response_frame_abnormal(struct vpu_inst *inst)
999 {
1000 	struct vdec_t *vdec = inst->priv;
1001 	struct vpu_fs_info info;
1002 
1003 	if (!vdec->req_frame_count)
1004 		return 0;
1005 
1006 	memset(&info, 0, sizeof(info));
1007 	info.type = MEM_RES_FRAME;
1008 	info.tag = vdec->seq_tag + 0xf0;
1009 	vpu_session_alloc_fs(inst, &info);
1010 	vdec->req_frame_count--;
1011 
1012 	return 0;
1013 }
1014 
1015 static int vdec_response_frame(struct vpu_inst *inst, struct vb2_v4l2_buffer *vbuf)
1016 {
1017 	struct vdec_t *vdec = inst->priv;
1018 	struct vpu_vb2_buffer *vpu_buf;
1019 	struct vpu_fs_info info;
1020 	int ret;
1021 
1022 	if (inst->state != VPU_CODEC_STATE_ACTIVE)
1023 		return -EINVAL;
1024 
1025 	if (vdec->aborting)
1026 		return -EINVAL;
1027 
1028 	if (!vdec->req_frame_count)
1029 		return -EINVAL;
1030 
1031 	if (!vbuf)
1032 		return -EINVAL;
1033 
1034 	if (vdec->slots[vbuf->vb2_buf.index]) {
1035 		dev_err(inst->dev, "[%d] repeat alloc fs %d\n",
1036 			inst->id, vbuf->vb2_buf.index);
1037 		return -EINVAL;
1038 	}
1039 
1040 	dev_dbg(inst->dev, "[%d] state = %d, alloc fs %d, tag = 0x%x\n",
1041 		inst->id, inst->state, vbuf->vb2_buf.index, vdec->seq_tag);
1042 	vpu_buf = to_vpu_vb2_buffer(vbuf);
1043 
1044 	memset(&info, 0, sizeof(info));
1045 	info.id = vbuf->vb2_buf.index;
1046 	info.type = MEM_RES_FRAME;
1047 	info.tag = vdec->seq_tag;
1048 	info.luma_addr = vpu_get_vb_phy_addr(&vbuf->vb2_buf, 0);
1049 	info.luma_size = inst->cap_format.sizeimage[0];
1050 	if (vbuf->vb2_buf.num_planes > 1)
1051 		info.chroma_addr = vpu_get_vb_phy_addr(&vbuf->vb2_buf, 1);
1052 	else
1053 		info.chroma_addr = info.luma_addr + info.luma_size;
1054 	info.chromau_size = inst->cap_format.sizeimage[1];
1055 	info.bytesperline = inst->cap_format.bytesperline[0];
1056 	ret = vpu_session_alloc_fs(inst, &info);
1057 	if (ret)
1058 		return ret;
1059 
1060 	vpu_buf->tag = info.tag;
1061 	vpu_buf->luma = info.luma_addr;
1062 	vpu_buf->chroma_u = info.chroma_addr;
1063 	vpu_buf->chroma_v = 0;
1064 	vpu_set_buffer_state(vbuf, VPU_BUF_STATE_INUSE);
1065 	vdec->slots[info.id] = vpu_buf;
1066 	vdec->req_frame_count--;
1067 
1068 	return 0;
1069 }
1070 
1071 static void vdec_response_fs_request(struct vpu_inst *inst, bool force)
1072 {
1073 	struct vdec_t *vdec = inst->priv;
1074 	int i;
1075 	int ret;
1076 
1077 	if (force) {
1078 		for (i = vdec->req_frame_count; i > 0; i--)
1079 			vdec_response_frame_abnormal(inst);
1080 		return;
1081 	}
1082 
1083 	for (i = vdec->req_frame_count; i > 0; i--) {
1084 		ret = vpu_process_capture_buffer(inst);
1085 		if (ret)
1086 			break;
1087 		if (vdec->eos_received)
1088 			break;
1089 	}
1090 
1091 	for (i = vdec->mbi.index; i < vdec->mbi.count; i++) {
1092 		if (vdec_response_fs(inst, &vdec->mbi))
1093 			break;
1094 		if (vdec->eos_received)
1095 			break;
1096 	}
1097 	for (i = vdec->dcp.index; i < vdec->dcp.count; i++) {
1098 		if (vdec_response_fs(inst, &vdec->dcp))
1099 			break;
1100 		if (vdec->eos_received)
1101 			break;
1102 	}
1103 }
1104 
1105 static void vdec_response_fs_release(struct vpu_inst *inst, u32 id, u32 tag)
1106 {
1107 	struct vpu_fs_info info;
1108 
1109 	memset(&info, 0, sizeof(info));
1110 	info.id = id;
1111 	info.tag = tag;
1112 	vpu_session_release_fs(inst, &info);
1113 }
1114 
1115 static void vdec_recycle_buffer(struct vpu_inst *inst, struct vb2_v4l2_buffer *vbuf)
1116 {
1117 	if (!inst->fh.m2m_ctx)
1118 		return;
1119 	if (vbuf->vb2_buf.state != VB2_BUF_STATE_ACTIVE)
1120 		return;
1121 	if (vpu_find_buf_by_idx(inst, vbuf->vb2_buf.type, vbuf->vb2_buf.index))
1122 		return;
1123 	v4l2_m2m_buf_queue(inst->fh.m2m_ctx, vbuf);
1124 }
1125 
1126 static void vdec_clear_slots(struct vpu_inst *inst)
1127 {
1128 	struct vdec_t *vdec = inst->priv;
1129 	struct vpu_vb2_buffer *vpu_buf;
1130 	struct vb2_v4l2_buffer *vbuf;
1131 	int i;
1132 
1133 	for (i = 0; i < ARRAY_SIZE(vdec->slots); i++) {
1134 		if (!vdec->slots[i])
1135 			continue;
1136 
1137 		vpu_buf = vdec->slots[i];
1138 		vbuf = &vpu_buf->m2m_buf.vb;
1139 
1140 		vpu_trace(inst->dev, "clear slot %d\n", i);
1141 		vdec_response_fs_release(inst, i, vpu_buf->tag);
1142 		vdec_recycle_buffer(inst, vbuf);
1143 		vdec->slots[i]->state = VPU_BUF_STATE_IDLE;
1144 		vdec->slots[i] = NULL;
1145 	}
1146 }
1147 
1148 static void vdec_event_seq_hdr(struct vpu_inst *inst, struct vpu_dec_codec_info *hdr)
1149 {
1150 	struct vdec_t *vdec = inst->priv;
1151 
1152 	vpu_inst_lock(inst);
1153 	memcpy(&vdec->codec_info, hdr, sizeof(vdec->codec_info));
1154 
1155 	vpu_trace(inst->dev, "[%d] %d x %d, crop : (%d, %d) %d x %d, %d, %d\n",
1156 		  inst->id,
1157 		  vdec->codec_info.decoded_width,
1158 		  vdec->codec_info.decoded_height,
1159 		  vdec->codec_info.offset_x,
1160 		  vdec->codec_info.offset_y,
1161 		  vdec->codec_info.width,
1162 		  vdec->codec_info.height,
1163 		  hdr->num_ref_frms,
1164 		  hdr->num_dpb_frms);
1165 	inst->min_buffer_cap = hdr->num_ref_frms + hdr->num_dpb_frms;
1166 	vdec->is_source_changed = vdec_check_source_change(inst);
1167 	vdec_init_fmt(inst);
1168 	vdec_init_crop(inst);
1169 	vdec_init_mbi(inst);
1170 	vdec_init_dcp(inst);
1171 	if (!vdec->seq_hdr_found) {
1172 		vdec->seq_tag = vdec->codec_info.tag;
1173 		if (vdec->is_source_changed) {
1174 			vdec_update_state(inst, VPU_CODEC_STATE_DYAMIC_RESOLUTION_CHANGE, 0);
1175 			vdec->source_change++;
1176 			vdec_handle_resolution_change(inst);
1177 			vdec->is_source_changed = false;
1178 		}
1179 	}
1180 	if (vdec->seq_tag != vdec->codec_info.tag) {
1181 		vdec_response_fs_request(inst, true);
1182 		vpu_trace(inst->dev, "[%d] seq tag change: %d -> %d\n",
1183 			  inst->id, vdec->seq_tag, vdec->codec_info.tag);
1184 	}
1185 	vdec->seq_hdr_found++;
1186 	vdec->fixed_fmt = true;
1187 	vpu_inst_unlock(inst);
1188 }
1189 
1190 static void vdec_event_resolution_change(struct vpu_inst *inst)
1191 {
1192 	struct vdec_t *vdec = inst->priv;
1193 
1194 	vpu_trace(inst->dev, "[%d]\n", inst->id);
1195 	vpu_inst_lock(inst);
1196 	vdec->seq_tag = vdec->codec_info.tag;
1197 	vdec_clear_fs(&vdec->mbi);
1198 	vdec_clear_fs(&vdec->dcp);
1199 	vdec_clear_slots(inst);
1200 	vdec_init_mbi(inst);
1201 	vdec_init_dcp(inst);
1202 	if (vdec->is_source_changed) {
1203 		vdec_update_state(inst, VPU_CODEC_STATE_DYAMIC_RESOLUTION_CHANGE, 0);
1204 		vdec->source_change++;
1205 		vdec_handle_resolution_change(inst);
1206 		vdec->is_source_changed = false;
1207 	}
1208 	vpu_inst_unlock(inst);
1209 }
1210 
1211 static void vdec_event_req_fs(struct vpu_inst *inst, struct vpu_fs_info *fs)
1212 {
1213 	struct vdec_t *vdec = inst->priv;
1214 
1215 	if (!fs)
1216 		return;
1217 
1218 	vpu_inst_lock(inst);
1219 
1220 	switch (fs->type) {
1221 	case MEM_RES_FRAME:
1222 		vdec->req_frame_count++;
1223 		break;
1224 	case MEM_RES_MBI:
1225 		vdec_request_one_fs(&vdec->mbi);
1226 		break;
1227 	case MEM_RES_DCP:
1228 		vdec_request_one_fs(&vdec->dcp);
1229 		break;
1230 	default:
1231 		break;
1232 	}
1233 
1234 	vdec_alloc_fs(inst, &vdec->mbi);
1235 	vdec_alloc_fs(inst, &vdec->dcp);
1236 
1237 	vdec_response_fs_request(inst, false);
1238 
1239 	vpu_inst_unlock(inst);
1240 }
1241 
1242 static void vdec_evnet_rel_fs(struct vpu_inst *inst, struct vpu_fs_info *fs)
1243 {
1244 	struct vdec_t *vdec = inst->priv;
1245 	struct vpu_vb2_buffer *vpu_buf;
1246 	struct vb2_v4l2_buffer *vbuf;
1247 
1248 	if (!fs || fs->id >= ARRAY_SIZE(vdec->slots))
1249 		return;
1250 	if (fs->type != MEM_RES_FRAME)
1251 		return;
1252 
1253 	if (fs->id >= vpu_get_num_buffers(inst, inst->cap_format.type)) {
1254 		dev_err(inst->dev, "[%d] invalid fs(%d) to release\n", inst->id, fs->id);
1255 		return;
1256 	}
1257 
1258 	vpu_inst_lock(inst);
1259 	vpu_buf = vdec->slots[fs->id];
1260 	vdec->slots[fs->id] = NULL;
1261 
1262 	if (!vpu_buf) {
1263 		dev_dbg(inst->dev, "[%d] fs[%d] has bee released\n", inst->id, fs->id);
1264 		goto exit;
1265 	}
1266 
1267 	vbuf = &vpu_buf->m2m_buf.vb;
1268 	if (vpu_get_buffer_state(vbuf) == VPU_BUF_STATE_DECODED) {
1269 		dev_dbg(inst->dev, "[%d] frame skip\n", inst->id);
1270 		vdec->sequence++;
1271 	}
1272 
1273 	vdec_response_fs_release(inst, fs->id, vpu_buf->tag);
1274 	if (vpu_get_buffer_state(vbuf) != VPU_BUF_STATE_READY)
1275 		vdec_recycle_buffer(inst, vbuf);
1276 
1277 	vpu_set_buffer_state(vbuf, VPU_BUF_STATE_IDLE);
1278 	vpu_process_capture_buffer(inst);
1279 
1280 exit:
1281 	vpu_inst_unlock(inst);
1282 }
1283 
1284 static void vdec_event_eos(struct vpu_inst *inst)
1285 {
1286 	struct vdec_t *vdec = inst->priv;
1287 
1288 	vpu_trace(inst->dev, "[%d] input : %d, decoded : %d, display : %d, sequence : %d\n",
1289 		  inst->id,
1290 		  vdec->params.frame_count,
1291 		  vdec->decoded_frame_count,
1292 		  vdec->display_frame_count,
1293 		  vdec->sequence);
1294 	vpu_inst_lock(inst);
1295 	vdec->eos_received++;
1296 	vdec->fixed_fmt = false;
1297 	inst->min_buffer_cap = VDEC_MIN_BUFFER_CAP;
1298 	vdec_set_last_buffer_dequeued(inst);
1299 	vpu_inst_unlock(inst);
1300 }
1301 
1302 static void vdec_event_notify(struct vpu_inst *inst, u32 event, void *data)
1303 {
1304 	switch (event) {
1305 	case VPU_MSG_ID_SEQ_HDR_FOUND:
1306 		vdec_event_seq_hdr(inst, data);
1307 		break;
1308 	case VPU_MSG_ID_RES_CHANGE:
1309 		vdec_event_resolution_change(inst);
1310 		break;
1311 	case VPU_MSG_ID_FRAME_REQ:
1312 		vdec_event_req_fs(inst, data);
1313 		break;
1314 	case VPU_MSG_ID_FRAME_RELEASE:
1315 		vdec_evnet_rel_fs(inst, data);
1316 		break;
1317 	case VPU_MSG_ID_PIC_EOS:
1318 		vdec_event_eos(inst);
1319 		break;
1320 	default:
1321 		break;
1322 	}
1323 }
1324 
1325 static int vdec_process_output(struct vpu_inst *inst, struct vb2_buffer *vb)
1326 {
1327 	struct vdec_t *vdec = inst->priv;
1328 	struct vb2_v4l2_buffer *vbuf;
1329 	struct vpu_rpc_buffer_desc desc;
1330 	u32 free_space;
1331 	int ret;
1332 
1333 	vbuf = to_vb2_v4l2_buffer(vb);
1334 	dev_dbg(inst->dev, "[%d] dec output [%d] %d : %ld\n",
1335 		inst->id, vbuf->sequence, vb->index, vb2_get_plane_payload(vb, 0));
1336 
1337 	if (inst->state == VPU_CODEC_STATE_DEINIT)
1338 		return -EINVAL;
1339 	if (vdec->reset_codec)
1340 		return -EINVAL;
1341 
1342 	if (inst->state == VPU_CODEC_STATE_STARTED)
1343 		vdec_update_state(inst, VPU_CODEC_STATE_ACTIVE, 0);
1344 
1345 	ret = vpu_iface_get_stream_buffer_desc(inst, &desc);
1346 	if (ret)
1347 		return ret;
1348 
1349 	free_space = vpu_helper_get_free_space(inst);
1350 	if (free_space < vb2_get_plane_payload(vb, 0) + 0x40000)
1351 		return -ENOMEM;
1352 
1353 	vpu_set_buffer_state(vbuf, VPU_BUF_STATE_INUSE);
1354 	ret = vpu_iface_input_frame(inst, vb);
1355 	if (ret < 0)
1356 		return -ENOMEM;
1357 
1358 	dev_dbg(inst->dev, "[%d][INPUT  TS]%32lld\n", inst->id, vb->timestamp);
1359 	vdec->params.frame_count++;
1360 
1361 	if (vdec->drain)
1362 		vdec_drain(inst);
1363 
1364 	return 0;
1365 }
1366 
1367 static int vdec_process_capture(struct vpu_inst *inst, struct vb2_buffer *vb)
1368 {
1369 	struct vdec_t *vdec = inst->priv;
1370 	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1371 	int ret;
1372 
1373 	if (inst->state == VPU_CODEC_STATE_DYAMIC_RESOLUTION_CHANGE)
1374 		return -EINVAL;
1375 	if (vdec->reset_codec)
1376 		return -EINVAL;
1377 
1378 	ret = vdec_response_frame(inst, vbuf);
1379 	if (ret)
1380 		return ret;
1381 	v4l2_m2m_dst_buf_remove_by_buf(inst->fh.m2m_ctx, vbuf);
1382 	return 0;
1383 }
1384 
1385 static void vdec_on_queue_empty(struct vpu_inst *inst, u32 type)
1386 {
1387 	struct vdec_t *vdec = inst->priv;
1388 
1389 	if (V4L2_TYPE_IS_OUTPUT(type))
1390 		return;
1391 
1392 	vdec_handle_resolution_change(inst);
1393 	if (vdec->eos_received)
1394 		vdec_set_last_buffer_dequeued(inst);
1395 }
1396 
1397 static void vdec_abort(struct vpu_inst *inst)
1398 {
1399 	struct vdec_t *vdec = inst->priv;
1400 	struct vpu_rpc_buffer_desc desc;
1401 	int ret;
1402 
1403 	vpu_trace(inst->dev, "[%d] state = %d\n", inst->id, inst->state);
1404 
1405 	vdec->aborting = true;
1406 	vpu_iface_add_scode(inst, SCODE_PADDING_ABORT);
1407 	vdec->params.end_flag = 1;
1408 	vpu_iface_set_decode_params(inst, &vdec->params, 1);
1409 
1410 	vpu_session_abort(inst);
1411 
1412 	ret = vpu_iface_get_stream_buffer_desc(inst, &desc);
1413 	if (!ret)
1414 		vpu_iface_update_stream_buffer(inst, desc.rptr, 1);
1415 
1416 	vpu_session_rst_buf(inst);
1417 	vpu_trace(inst->dev, "[%d] input : %d, decoded : %d, display : %d, sequence : %d\n",
1418 		  inst->id,
1419 		  vdec->params.frame_count,
1420 		  vdec->decoded_frame_count,
1421 		  vdec->display_frame_count,
1422 		  vdec->sequence);
1423 	if (!vdec->seq_hdr_found)
1424 		vdec->reset_codec = true;
1425 	vdec->params.end_flag = 0;
1426 	vdec->drain = 0;
1427 	vdec->params.frame_count = 0;
1428 	vdec->decoded_frame_count = 0;
1429 	vdec->display_frame_count = 0;
1430 	vdec->sequence = 0;
1431 	vdec->aborting = false;
1432 	inst->extra_size = 0;
1433 }
1434 
1435 static void vdec_stop(struct vpu_inst *inst, bool free)
1436 {
1437 	struct vdec_t *vdec = inst->priv;
1438 
1439 	vdec_clear_slots(inst);
1440 	if (inst->state != VPU_CODEC_STATE_DEINIT)
1441 		vpu_session_stop(inst);
1442 	vdec_clear_fs(&vdec->mbi);
1443 	vdec_clear_fs(&vdec->dcp);
1444 	if (free) {
1445 		vpu_free_dma(&vdec->udata);
1446 		vpu_free_dma(&inst->stream_buffer);
1447 	}
1448 	vdec_update_state(inst, VPU_CODEC_STATE_DEINIT, 1);
1449 	vdec->reset_codec = false;
1450 }
1451 
1452 static void vdec_release(struct vpu_inst *inst)
1453 {
1454 	if (inst->id != VPU_INST_NULL_ID)
1455 		vpu_trace(inst->dev, "[%d]\n", inst->id);
1456 	vpu_inst_lock(inst);
1457 	vdec_stop(inst, true);
1458 	vpu_inst_unlock(inst);
1459 }
1460 
1461 static void vdec_cleanup(struct vpu_inst *inst)
1462 {
1463 	struct vdec_t *vdec;
1464 
1465 	if (!inst)
1466 		return;
1467 
1468 	vdec = inst->priv;
1469 	vfree(vdec);
1470 	inst->priv = NULL;
1471 	vfree(inst);
1472 }
1473 
1474 static void vdec_init_params(struct vdec_t *vdec)
1475 {
1476 	vdec->params.frame_count = 0;
1477 	vdec->params.end_flag = 0;
1478 }
1479 
1480 static int vdec_start(struct vpu_inst *inst)
1481 {
1482 	struct vdec_t *vdec = inst->priv;
1483 	int stream_buffer_size;
1484 	int ret;
1485 
1486 	if (inst->state != VPU_CODEC_STATE_DEINIT)
1487 		return 0;
1488 
1489 	vpu_trace(inst->dev, "[%d]\n", inst->id);
1490 	if (!vdec->udata.virt) {
1491 		vdec->udata.length = 0x1000;
1492 		ret = vpu_alloc_dma(inst->core, &vdec->udata);
1493 		if (ret) {
1494 			dev_err(inst->dev, "[%d] alloc udata fail\n", inst->id);
1495 			goto error;
1496 		}
1497 	}
1498 
1499 	if (!inst->stream_buffer.virt) {
1500 		stream_buffer_size = vpu_iface_get_stream_buffer_size(inst->core);
1501 		if (stream_buffer_size > 0) {
1502 			inst->stream_buffer.length = stream_buffer_size;
1503 			ret = vpu_alloc_dma(inst->core, &inst->stream_buffer);
1504 			if (ret) {
1505 				dev_err(inst->dev, "[%d] alloc stream buffer fail\n", inst->id);
1506 				goto error;
1507 			}
1508 			inst->use_stream_buffer = true;
1509 		}
1510 	}
1511 
1512 	if (inst->use_stream_buffer)
1513 		vpu_iface_config_stream_buffer(inst, &inst->stream_buffer);
1514 	vpu_iface_init_instance(inst);
1515 	vdec->params.udata.base = vdec->udata.phys;
1516 	vdec->params.udata.size = vdec->udata.length;
1517 	ret = vpu_iface_set_decode_params(inst, &vdec->params, 0);
1518 	if (ret) {
1519 		dev_err(inst->dev, "[%d] set decode params fail\n", inst->id);
1520 		goto error;
1521 	}
1522 
1523 	vdec_init_params(vdec);
1524 	ret = vpu_session_start(inst);
1525 	if (ret) {
1526 		dev_err(inst->dev, "[%d] start fail\n", inst->id);
1527 		goto error;
1528 	}
1529 
1530 	vdec_update_state(inst, VPU_CODEC_STATE_STARTED, 0);
1531 
1532 	return 0;
1533 error:
1534 	vpu_free_dma(&vdec->udata);
1535 	vpu_free_dma(&inst->stream_buffer);
1536 	return ret;
1537 }
1538 
1539 static int vdec_start_session(struct vpu_inst *inst, u32 type)
1540 {
1541 	struct vdec_t *vdec = inst->priv;
1542 	int ret = 0;
1543 
1544 	if (V4L2_TYPE_IS_OUTPUT(type)) {
1545 		if (vdec->reset_codec)
1546 			vdec_stop(inst, false);
1547 		if (inst->state == VPU_CODEC_STATE_DEINIT) {
1548 			ret = vdec_start(inst);
1549 			if (ret)
1550 				return ret;
1551 		}
1552 	}
1553 
1554 	if (V4L2_TYPE_IS_OUTPUT(type)) {
1555 		vdec_update_state(inst, vdec->state, 1);
1556 		vdec->eos_received = 0;
1557 		vpu_process_output_buffer(inst);
1558 	} else {
1559 		vdec_cmd_start(inst);
1560 	}
1561 	if (inst->state == VPU_CODEC_STATE_ACTIVE)
1562 		vdec_response_fs_request(inst, false);
1563 
1564 	return ret;
1565 }
1566 
1567 static int vdec_stop_session(struct vpu_inst *inst, u32 type)
1568 {
1569 	struct vdec_t *vdec = inst->priv;
1570 
1571 	if (inst->state == VPU_CODEC_STATE_DEINIT)
1572 		return 0;
1573 
1574 	if (V4L2_TYPE_IS_OUTPUT(type)) {
1575 		vdec_update_state(inst, VPU_CODEC_STATE_SEEK, 0);
1576 		vdec->drain = 0;
1577 	} else {
1578 		if (inst->state != VPU_CODEC_STATE_DYAMIC_RESOLUTION_CHANGE) {
1579 			vdec_abort(inst);
1580 			vdec->eos_received = 0;
1581 		}
1582 		vdec_clear_slots(inst);
1583 	}
1584 
1585 	return 0;
1586 }
1587 
1588 static int vdec_get_debug_info(struct vpu_inst *inst, char *str, u32 size, u32 i)
1589 {
1590 	struct vdec_t *vdec = inst->priv;
1591 	int num = -1;
1592 
1593 	switch (i) {
1594 	case 0:
1595 		num = scnprintf(str, size,
1596 				"req_frame_count = %d\ninterlaced = %d\n",
1597 				vdec->req_frame_count,
1598 				vdec->codec_info.progressive ? 0 : 1);
1599 		break;
1600 	case 1:
1601 		num = scnprintf(str, size,
1602 				"mbi: size = 0x%x request = %d, alloc = %d, response = %d\n",
1603 				vdec->mbi.size,
1604 				vdec->mbi.req_count,
1605 				vdec->mbi.count,
1606 				vdec->mbi.index);
1607 		break;
1608 	case 2:
1609 		num = scnprintf(str, size,
1610 				"dcp: size = 0x%x request = %d, alloc = %d, response = %d\n",
1611 				vdec->dcp.size,
1612 				vdec->dcp.req_count,
1613 				vdec->dcp.count,
1614 				vdec->dcp.index);
1615 		break;
1616 	case 3:
1617 		num = scnprintf(str, size, "input_frame_count = %d\n", vdec->params.frame_count);
1618 		break;
1619 	case 4:
1620 		num = scnprintf(str, size, "decoded_frame_count = %d\n", vdec->decoded_frame_count);
1621 		break;
1622 	case 5:
1623 		num = scnprintf(str, size, "display_frame_count = %d\n", vdec->display_frame_count);
1624 		break;
1625 	case 6:
1626 		num = scnprintf(str, size, "sequence = %d\n", vdec->sequence);
1627 		break;
1628 	case 7:
1629 		num = scnprintf(str, size, "drain = %d, eos = %d, source_change = %d\n",
1630 				vdec->drain, vdec->eos_received, vdec->source_change);
1631 		break;
1632 	case 8:
1633 		num = scnprintf(str, size, "fps = %d/%d\n",
1634 				vdec->codec_info.frame_rate.numerator,
1635 				vdec->codec_info.frame_rate.denominator);
1636 		break;
1637 	case 9:
1638 		num = scnprintf(str, size, "colorspace: %d, %d, %d, %d (%d)\n",
1639 				vdec->codec_info.color_primaries,
1640 				vdec->codec_info.transfer_chars,
1641 				vdec->codec_info.matrix_coeffs,
1642 				vdec->codec_info.full_range,
1643 				vdec->codec_info.vui_present);
1644 		break;
1645 	default:
1646 		break;
1647 	}
1648 
1649 	return num;
1650 }
1651 
1652 static struct vpu_inst_ops vdec_inst_ops = {
1653 	.ctrl_init = vdec_ctrl_init,
1654 	.check_ready = vdec_check_ready,
1655 	.buf_done = vdec_buf_done,
1656 	.get_one_frame = vdec_frame_decoded,
1657 	.stop_done = vdec_stop_done,
1658 	.event_notify = vdec_event_notify,
1659 	.release = vdec_release,
1660 	.cleanup = vdec_cleanup,
1661 	.start = vdec_start_session,
1662 	.stop = vdec_stop_session,
1663 	.process_output = vdec_process_output,
1664 	.process_capture = vdec_process_capture,
1665 	.on_queue_empty = vdec_on_queue_empty,
1666 	.get_debug_info = vdec_get_debug_info,
1667 	.wait_prepare = vpu_inst_unlock,
1668 	.wait_finish = vpu_inst_lock,
1669 };
1670 
1671 static void vdec_init(struct file *file)
1672 {
1673 	struct vpu_inst *inst = to_inst(file);
1674 	struct v4l2_format f;
1675 
1676 	memset(&f, 0, sizeof(f));
1677 	f.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
1678 	f.fmt.pix_mp.pixelformat = V4L2_PIX_FMT_H264;
1679 	f.fmt.pix_mp.width = 1280;
1680 	f.fmt.pix_mp.height = 720;
1681 	f.fmt.pix_mp.field = V4L2_FIELD_NONE;
1682 	vdec_s_fmt(file, &inst->fh, &f);
1683 
1684 	memset(&f, 0, sizeof(f));
1685 	f.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1686 	f.fmt.pix_mp.pixelformat = V4L2_PIX_FMT_NV12M_8L128;
1687 	f.fmt.pix_mp.width = 1280;
1688 	f.fmt.pix_mp.height = 720;
1689 	f.fmt.pix_mp.field = V4L2_FIELD_NONE;
1690 	vdec_s_fmt(file, &inst->fh, &f);
1691 }
1692 
1693 static int vdec_open(struct file *file)
1694 {
1695 	struct vpu_inst *inst;
1696 	struct vdec_t *vdec;
1697 	int ret;
1698 
1699 	inst = vzalloc(sizeof(*inst));
1700 	if (!inst)
1701 		return -ENOMEM;
1702 
1703 	vdec = vzalloc(sizeof(*vdec));
1704 	if (!vdec) {
1705 		vfree(inst);
1706 		return -ENOMEM;
1707 	}
1708 
1709 	inst->ops = &vdec_inst_ops;
1710 	inst->formats = vdec_formats;
1711 	inst->type = VPU_CORE_TYPE_DEC;
1712 	inst->priv = vdec;
1713 
1714 	ret = vpu_v4l2_open(file, inst);
1715 	if (ret)
1716 		return ret;
1717 
1718 	vdec->fixed_fmt = false;
1719 	vdec->state = VPU_CODEC_STATE_ACTIVE;
1720 	inst->min_buffer_cap = VDEC_MIN_BUFFER_CAP;
1721 	inst->min_buffer_out = VDEC_MIN_BUFFER_OUT;
1722 	vdec_init(file);
1723 
1724 	return 0;
1725 }
1726 
1727 static const struct v4l2_file_operations vdec_fops = {
1728 	.owner = THIS_MODULE,
1729 	.open = vdec_open,
1730 	.release = vpu_v4l2_close,
1731 	.unlocked_ioctl = video_ioctl2,
1732 	.poll = v4l2_m2m_fop_poll,
1733 	.mmap = v4l2_m2m_fop_mmap,
1734 };
1735 
1736 const struct v4l2_ioctl_ops *vdec_get_ioctl_ops(void)
1737 {
1738 	return &vdec_ioctl_ops;
1739 }
1740 
1741 const struct v4l2_file_operations *vdec_get_fops(void)
1742 {
1743 	return &vdec_fops;
1744 }
1745