1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * A virtual codec example device.
4 *
5 * Copyright 2018 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
6 *
7 * This is a virtual codec device driver for testing the codec framework.
8 * It simulates a device that uses memory buffers for both source and
9 * destination and encodes or decodes the data.
10 */
11
12 #include <linux/module.h>
13 #include <linux/delay.h>
14 #include <linux/fs.h>
15 #include <linux/sched.h>
16 #include <linux/slab.h>
17
18 #include <linux/platform_device.h>
19 #include <media/v4l2-mem2mem.h>
20 #include <media/v4l2-device.h>
21 #include <media/v4l2-ioctl.h>
22 #include <media/v4l2-ctrls.h>
23 #include <media/v4l2-event.h>
24 #include <media/videobuf2-vmalloc.h>
25
26 #include "codec-v4l2-fwht.h"
27
28 MODULE_DESCRIPTION("Virtual codec device");
29 MODULE_AUTHOR("Hans Verkuil <hans.verkuil@cisco.com>");
30 MODULE_LICENSE("GPL v2");
31
32 static bool multiplanar;
33 module_param(multiplanar, bool, 0444);
34 MODULE_PARM_DESC(multiplanar,
35 " use multi-planar API instead of single-planar API");
36
37 static unsigned int debug;
38 module_param(debug, uint, 0644);
39 MODULE_PARM_DESC(debug, " activates debug info");
40
41 #define VICODEC_NAME "vicodec"
42 #define MAX_WIDTH 4096U
43 #define MIN_WIDTH 640U
44 #define MAX_HEIGHT 2160U
45 #define MIN_HEIGHT 360U
46
47 #define dprintk(dev, fmt, arg...) \
48 v4l2_dbg(1, debug, &dev->v4l2_dev, "%s: " fmt, __func__, ## arg)
49
50
51 struct pixfmt_info {
52 u32 id;
53 unsigned int bytesperline_mult;
54 unsigned int sizeimage_mult;
55 unsigned int sizeimage_div;
56 unsigned int luma_step;
57 unsigned int chroma_step;
58 /* Chroma plane subsampling */
59 unsigned int width_div;
60 unsigned int height_div;
61 };
62
63 static const struct v4l2_fwht_pixfmt_info pixfmt_fwht = {
64 V4L2_PIX_FMT_FWHT, 0, 3, 1, 1, 1, 1, 1, 0, 1
65 };
66
67 static const struct v4l2_fwht_pixfmt_info pixfmt_stateless_fwht = {
68 V4L2_PIX_FMT_FWHT_STATELESS, 0, 3, 1, 1, 1, 1, 1, 0, 1
69 };
70
vicodec_dev_release(struct device * dev)71 static void vicodec_dev_release(struct device *dev)
72 {
73 }
74
75 static struct platform_device vicodec_pdev = {
76 .name = VICODEC_NAME,
77 .dev.release = vicodec_dev_release,
78 };
79
80 /* Per-queue, driver-specific private data */
81 struct vicodec_q_data {
82 unsigned int coded_width;
83 unsigned int coded_height;
84 unsigned int visible_width;
85 unsigned int visible_height;
86 unsigned int sizeimage;
87 unsigned int vb2_sizeimage;
88 unsigned int sequence;
89 const struct v4l2_fwht_pixfmt_info *info;
90 };
91
92 enum {
93 V4L2_M2M_SRC = 0,
94 V4L2_M2M_DST = 1,
95 };
96
97 struct vicodec_dev_instance {
98 struct video_device vfd;
99 struct mutex mutex;
100 spinlock_t lock;
101 struct v4l2_m2m_dev *m2m_dev;
102 };
103
104 struct vicodec_dev {
105 struct v4l2_device v4l2_dev;
106 struct vicodec_dev_instance stateful_enc;
107 struct vicodec_dev_instance stateful_dec;
108 struct vicodec_dev_instance stateless_dec;
109 #ifdef CONFIG_MEDIA_CONTROLLER
110 struct media_device mdev;
111 #endif
112
113 };
114
115 struct vicodec_ctx {
116 struct v4l2_fh fh;
117 struct vicodec_dev *dev;
118 bool is_enc;
119 bool is_stateless;
120 spinlock_t *lock;
121
122 struct v4l2_ctrl_handler hdl;
123
124 /* Source and destination queue data */
125 struct vicodec_q_data q_data[2];
126 struct v4l2_fwht_state state;
127
128 u32 cur_buf_offset;
129 u32 comp_max_size;
130 u32 comp_size;
131 u32 header_size;
132 u32 comp_magic_cnt;
133 bool comp_has_frame;
134 bool comp_has_next_frame;
135 bool first_source_change_sent;
136 bool source_changed;
137 };
138
139 static const struct v4l2_event vicodec_eos_event = {
140 .type = V4L2_EVENT_EOS
141 };
142
file2ctx(struct file * file)143 static inline struct vicodec_ctx *file2ctx(struct file *file)
144 {
145 return container_of(file->private_data, struct vicodec_ctx, fh);
146 }
147
get_q_data(struct vicodec_ctx * ctx,enum v4l2_buf_type type)148 static struct vicodec_q_data *get_q_data(struct vicodec_ctx *ctx,
149 enum v4l2_buf_type type)
150 {
151 switch (type) {
152 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
153 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
154 return &ctx->q_data[V4L2_M2M_SRC];
155 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
156 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
157 return &ctx->q_data[V4L2_M2M_DST];
158 default:
159 break;
160 }
161 return NULL;
162 }
163
copy_cap_to_ref(const u8 * cap,const struct v4l2_fwht_pixfmt_info * info,struct v4l2_fwht_state * state)164 static void copy_cap_to_ref(const u8 *cap, const struct v4l2_fwht_pixfmt_info *info,
165 struct v4l2_fwht_state *state)
166 {
167 int plane_idx;
168 u8 *p_ref = state->ref_frame.buf;
169 unsigned int cap_stride = state->stride;
170 unsigned int ref_stride = state->ref_stride;
171
172 for (plane_idx = 0; plane_idx < info->planes_num; plane_idx++) {
173 int i;
174 unsigned int h_div = (plane_idx == 1 || plane_idx == 2) ?
175 info->height_div : 1;
176 const u8 *row_cap = cap;
177 u8 *row_ref = p_ref;
178
179 if (info->planes_num == 3 && plane_idx == 1) {
180 cap_stride /= 2;
181 ref_stride /= 2;
182 }
183
184 if (plane_idx == 1 &&
185 (info->id == V4L2_PIX_FMT_NV24 ||
186 info->id == V4L2_PIX_FMT_NV42)) {
187 cap_stride *= 2;
188 ref_stride *= 2;
189 }
190
191 for (i = 0; i < state->visible_height / h_div; i++) {
192 memcpy(row_ref, row_cap, ref_stride);
193 row_ref += ref_stride;
194 row_cap += cap_stride;
195 }
196 cap += cap_stride * (state->coded_height / h_div);
197 p_ref += ref_stride * (state->coded_height / h_div);
198 }
199 }
200
validate_by_version(unsigned int flags,unsigned int version)201 static bool validate_by_version(unsigned int flags, unsigned int version)
202 {
203 if (!version || version > V4L2_FWHT_VERSION)
204 return false;
205
206 if (version >= 2) {
207 unsigned int components_num = 1 +
208 ((flags & V4L2_FWHT_FL_COMPONENTS_NUM_MSK) >>
209 V4L2_FWHT_FL_COMPONENTS_NUM_OFFSET);
210 unsigned int pixenc = flags & V4L2_FWHT_FL_PIXENC_MSK;
211
212 if (components_num == 0 || components_num > 4 || !pixenc)
213 return false;
214 }
215 return true;
216 }
217
validate_stateless_params_flags(const struct v4l2_ctrl_fwht_params * params,const struct v4l2_fwht_pixfmt_info * cur_info)218 static bool validate_stateless_params_flags(const struct v4l2_ctrl_fwht_params *params,
219 const struct v4l2_fwht_pixfmt_info *cur_info)
220 {
221 unsigned int width_div =
222 (params->flags & V4L2_FWHT_FL_CHROMA_FULL_WIDTH) ? 1 : 2;
223 unsigned int height_div =
224 (params->flags & V4L2_FWHT_FL_CHROMA_FULL_HEIGHT) ? 1 : 2;
225 unsigned int components_num = 3;
226 unsigned int pixenc = 0;
227
228 if (params->version < 3)
229 return false;
230
231 components_num = 1 + ((params->flags & V4L2_FWHT_FL_COMPONENTS_NUM_MSK) >>
232 V4L2_FWHT_FL_COMPONENTS_NUM_OFFSET);
233 pixenc = (params->flags & V4L2_FWHT_FL_PIXENC_MSK);
234 if (v4l2_fwht_validate_fmt(cur_info, width_div, height_div,
235 components_num, pixenc))
236 return true;
237 return false;
238 }
239
240
update_state_from_header(struct vicodec_ctx * ctx)241 static void update_state_from_header(struct vicodec_ctx *ctx)
242 {
243 const struct fwht_cframe_hdr *p_hdr = &ctx->state.header;
244
245 ctx->state.visible_width = ntohl(p_hdr->width);
246 ctx->state.visible_height = ntohl(p_hdr->height);
247 ctx->state.colorspace = ntohl(p_hdr->colorspace);
248 ctx->state.xfer_func = ntohl(p_hdr->xfer_func);
249 ctx->state.ycbcr_enc = ntohl(p_hdr->ycbcr_enc);
250 ctx->state.quantization = ntohl(p_hdr->quantization);
251 }
252
device_process(struct vicodec_ctx * ctx,struct vb2_v4l2_buffer * src_vb,struct vb2_v4l2_buffer * dst_vb)253 static int device_process(struct vicodec_ctx *ctx,
254 struct vb2_v4l2_buffer *src_vb,
255 struct vb2_v4l2_buffer *dst_vb)
256 {
257 struct vicodec_dev *dev = ctx->dev;
258 struct v4l2_fwht_state *state = &ctx->state;
259 u8 *p_src, *p_dst;
260 int ret = 0;
261
262 if (ctx->is_enc || ctx->is_stateless)
263 p_src = vb2_plane_vaddr(&src_vb->vb2_buf, 0);
264 else
265 p_src = state->compressed_frame;
266
267 if (ctx->is_stateless) {
268 struct media_request *src_req = src_vb->vb2_buf.req_obj.req;
269
270 ret = v4l2_ctrl_request_setup(src_req, &ctx->hdl);
271 if (ret)
272 return ret;
273 update_state_from_header(ctx);
274
275 ctx->state.header.size =
276 htonl(vb2_get_plane_payload(&src_vb->vb2_buf, 0));
277 /*
278 * set the reference buffer from the reference timestamp
279 * only if this is a P-frame
280 */
281 if (!(ntohl(ctx->state.header.flags) & V4L2_FWHT_FL_I_FRAME)) {
282 struct vb2_buffer *ref_vb2_buf;
283 struct vb2_queue *vq_cap =
284 v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
285 V4L2_BUF_TYPE_VIDEO_CAPTURE);
286
287 ref_vb2_buf = vb2_find_buffer(vq_cap, ctx->state.ref_frame_ts);
288 if (!ref_vb2_buf)
289 return -EINVAL;
290 if (ref_vb2_buf->state == VB2_BUF_STATE_ERROR)
291 ret = -EINVAL;
292 ctx->state.ref_frame.buf =
293 vb2_plane_vaddr(ref_vb2_buf, 0);
294 } else {
295 ctx->state.ref_frame.buf = NULL;
296 }
297 }
298 p_dst = vb2_plane_vaddr(&dst_vb->vb2_buf, 0);
299 if (!p_src || !p_dst) {
300 v4l2_err(&dev->v4l2_dev,
301 "Acquiring kernel pointers to buffers failed\n");
302 return -EFAULT;
303 }
304
305 if (ctx->is_enc) {
306 struct vicodec_q_data *q_src;
307 int comp_sz_or_errcode;
308
309 q_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
310 state->info = q_src->info;
311 comp_sz_or_errcode = v4l2_fwht_encode(state, p_src, p_dst);
312 if (comp_sz_or_errcode < 0)
313 return comp_sz_or_errcode;
314 vb2_set_plane_payload(&dst_vb->vb2_buf, 0, comp_sz_or_errcode);
315 } else {
316 struct vicodec_q_data *q_dst;
317 unsigned int comp_frame_size = ntohl(ctx->state.header.size);
318
319 q_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
320 if (comp_frame_size > ctx->comp_max_size)
321 return -EINVAL;
322 state->info = q_dst->info;
323 ret = v4l2_fwht_decode(state, p_src, p_dst);
324 if (ret < 0)
325 return ret;
326 if (!ctx->is_stateless)
327 copy_cap_to_ref(p_dst, ctx->state.info, &ctx->state);
328
329 vb2_set_plane_payload(&dst_vb->vb2_buf, 0, q_dst->sizeimage);
330 if (ntohl(ctx->state.header.flags) & V4L2_FWHT_FL_I_FRAME)
331 dst_vb->flags |= V4L2_BUF_FLAG_KEYFRAME;
332 else
333 dst_vb->flags |= V4L2_BUF_FLAG_PFRAME;
334 }
335 return ret;
336 }
337
338 /*
339 * mem2mem callbacks
340 */
get_next_header(struct vicodec_ctx * ctx,u8 ** pp,u32 sz)341 static enum vb2_buffer_state get_next_header(struct vicodec_ctx *ctx,
342 u8 **pp, u32 sz)
343 {
344 static const u8 magic[] = {
345 0x4f, 0x4f, 0x4f, 0x4f, 0xff, 0xff, 0xff, 0xff
346 };
347 u8 *p = *pp;
348 u32 state;
349 u8 *header = (u8 *)&ctx->state.header;
350
351 state = VB2_BUF_STATE_DONE;
352
353 if (!ctx->header_size) {
354 state = VB2_BUF_STATE_ERROR;
355 for (; p < *pp + sz; p++) {
356 u32 copy;
357
358 p = memchr(p, magic[ctx->comp_magic_cnt],
359 *pp + sz - p);
360 if (!p) {
361 ctx->comp_magic_cnt = 0;
362 p = *pp + sz;
363 break;
364 }
365 copy = sizeof(magic) - ctx->comp_magic_cnt;
366 if (*pp + sz - p < copy)
367 copy = *pp + sz - p;
368
369 memcpy(header + ctx->comp_magic_cnt, p, copy);
370 ctx->comp_magic_cnt += copy;
371 if (!memcmp(header, magic, ctx->comp_magic_cnt)) {
372 p += copy;
373 state = VB2_BUF_STATE_DONE;
374 break;
375 }
376 ctx->comp_magic_cnt = 0;
377 }
378 if (ctx->comp_magic_cnt < sizeof(magic)) {
379 *pp = p;
380 return state;
381 }
382 ctx->header_size = sizeof(magic);
383 }
384
385 if (ctx->header_size < sizeof(struct fwht_cframe_hdr)) {
386 u32 copy = sizeof(struct fwht_cframe_hdr) - ctx->header_size;
387
388 if (*pp + sz - p < copy)
389 copy = *pp + sz - p;
390
391 memcpy(header + ctx->header_size, p, copy);
392 p += copy;
393 ctx->header_size += copy;
394 }
395 *pp = p;
396 return state;
397 }
398
399 /* device_run() - prepares and starts the device */
device_run(void * priv)400 static void device_run(void *priv)
401 {
402 struct vicodec_ctx *ctx = priv;
403 struct vicodec_dev *dev = ctx->dev;
404 struct vb2_v4l2_buffer *src_buf, *dst_buf;
405 struct vicodec_q_data *q_src, *q_dst;
406 u32 state;
407 struct media_request *src_req;
408
409 src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
410 dst_buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
411 src_req = src_buf->vb2_buf.req_obj.req;
412
413 q_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
414 q_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
415
416 state = VB2_BUF_STATE_DONE;
417 if (device_process(ctx, src_buf, dst_buf))
418 state = VB2_BUF_STATE_ERROR;
419 else
420 dst_buf->sequence = q_dst->sequence++;
421 dst_buf->flags &= ~V4L2_BUF_FLAG_LAST;
422 v4l2_m2m_buf_copy_metadata(src_buf, dst_buf, false);
423
424 spin_lock(ctx->lock);
425 if (!ctx->comp_has_next_frame &&
426 v4l2_m2m_is_last_draining_src_buf(ctx->fh.m2m_ctx, src_buf)) {
427 dst_buf->flags |= V4L2_BUF_FLAG_LAST;
428 v4l2_event_queue_fh(&ctx->fh, &vicodec_eos_event);
429 v4l2_m2m_mark_stopped(ctx->fh.m2m_ctx);
430 }
431 if (ctx->is_enc || ctx->is_stateless) {
432 src_buf->sequence = q_src->sequence++;
433 src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
434 v4l2_m2m_buf_done(src_buf, state);
435 } else if (vb2_get_plane_payload(&src_buf->vb2_buf, 0) == ctx->cur_buf_offset) {
436 src_buf->sequence = q_src->sequence++;
437 src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
438 v4l2_m2m_buf_done(src_buf, state);
439 ctx->cur_buf_offset = 0;
440 ctx->comp_has_next_frame = false;
441 }
442 v4l2_m2m_buf_done(dst_buf, state);
443
444 ctx->comp_size = 0;
445 ctx->header_size = 0;
446 ctx->comp_magic_cnt = 0;
447 ctx->comp_has_frame = false;
448 spin_unlock(ctx->lock);
449 if (ctx->is_stateless && src_req)
450 v4l2_ctrl_request_complete(src_req, &ctx->hdl);
451
452 if (ctx->is_enc)
453 v4l2_m2m_job_finish(dev->stateful_enc.m2m_dev, ctx->fh.m2m_ctx);
454 else if (ctx->is_stateless)
455 v4l2_m2m_job_finish(dev->stateless_dec.m2m_dev,
456 ctx->fh.m2m_ctx);
457 else
458 v4l2_m2m_job_finish(dev->stateful_dec.m2m_dev, ctx->fh.m2m_ctx);
459 }
460
job_remove_src_buf(struct vicodec_ctx * ctx,u32 state)461 static void job_remove_src_buf(struct vicodec_ctx *ctx, u32 state)
462 {
463 struct vb2_v4l2_buffer *src_buf;
464 struct vicodec_q_data *q_src;
465
466 q_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
467 spin_lock(ctx->lock);
468 src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
469 src_buf->sequence = q_src->sequence++;
470 v4l2_m2m_buf_done(src_buf, state);
471 ctx->cur_buf_offset = 0;
472 spin_unlock(ctx->lock);
473 }
474
475 static const struct v4l2_fwht_pixfmt_info *
info_from_header(const struct fwht_cframe_hdr * p_hdr)476 info_from_header(const struct fwht_cframe_hdr *p_hdr)
477 {
478 unsigned int flags = ntohl(p_hdr->flags);
479 unsigned int width_div = (flags & V4L2_FWHT_FL_CHROMA_FULL_WIDTH) ? 1 : 2;
480 unsigned int height_div = (flags & V4L2_FWHT_FL_CHROMA_FULL_HEIGHT) ? 1 : 2;
481 unsigned int components_num = 3;
482 unsigned int pixenc = 0;
483 unsigned int version = ntohl(p_hdr->version);
484
485 if (version >= 2) {
486 components_num = 1 + ((flags & V4L2_FWHT_FL_COMPONENTS_NUM_MSK) >>
487 V4L2_FWHT_FL_COMPONENTS_NUM_OFFSET);
488 pixenc = (flags & V4L2_FWHT_FL_PIXENC_MSK);
489 }
490 return v4l2_fwht_find_nth_fmt(width_div, height_div,
491 components_num, pixenc, 0);
492 }
493
is_header_valid(const struct fwht_cframe_hdr * p_hdr)494 static bool is_header_valid(const struct fwht_cframe_hdr *p_hdr)
495 {
496 const struct v4l2_fwht_pixfmt_info *info;
497 unsigned int w = ntohl(p_hdr->width);
498 unsigned int h = ntohl(p_hdr->height);
499 unsigned int version = ntohl(p_hdr->version);
500 unsigned int flags = ntohl(p_hdr->flags);
501
502 if (w < MIN_WIDTH || w > MAX_WIDTH || h < MIN_HEIGHT || h > MAX_HEIGHT)
503 return false;
504
505 if (!validate_by_version(flags, version))
506 return false;
507
508 info = info_from_header(p_hdr);
509 if (!info)
510 return false;
511 return true;
512 }
513
update_capture_data_from_header(struct vicodec_ctx * ctx)514 static void update_capture_data_from_header(struct vicodec_ctx *ctx)
515 {
516 struct vicodec_q_data *q_dst = get_q_data(ctx,
517 V4L2_BUF_TYPE_VIDEO_CAPTURE);
518 const struct fwht_cframe_hdr *p_hdr = &ctx->state.header;
519 const struct v4l2_fwht_pixfmt_info *info = info_from_header(p_hdr);
520 unsigned int flags = ntohl(p_hdr->flags);
521 unsigned int hdr_width_div = (flags & V4L2_FWHT_FL_CHROMA_FULL_WIDTH) ? 1 : 2;
522 unsigned int hdr_height_div = (flags & V4L2_FWHT_FL_CHROMA_FULL_HEIGHT) ? 1 : 2;
523
524 /*
525 * This function should not be used by a stateless codec since
526 * it changes values in q_data that are not request specific
527 */
528 WARN_ON(ctx->is_stateless);
529
530 q_dst->info = info;
531 q_dst->visible_width = ntohl(p_hdr->width);
532 q_dst->visible_height = ntohl(p_hdr->height);
533 q_dst->coded_width = vic_round_dim(q_dst->visible_width, hdr_width_div);
534 q_dst->coded_height = vic_round_dim(q_dst->visible_height,
535 hdr_height_div);
536
537 q_dst->sizeimage = q_dst->coded_width * q_dst->coded_height *
538 q_dst->info->sizeimage_mult / q_dst->info->sizeimage_div;
539 ctx->state.colorspace = ntohl(p_hdr->colorspace);
540
541 ctx->state.xfer_func = ntohl(p_hdr->xfer_func);
542 ctx->state.ycbcr_enc = ntohl(p_hdr->ycbcr_enc);
543 ctx->state.quantization = ntohl(p_hdr->quantization);
544 }
545
set_last_buffer(struct vb2_v4l2_buffer * dst_buf,const struct vb2_v4l2_buffer * src_buf,struct vicodec_ctx * ctx)546 static void set_last_buffer(struct vb2_v4l2_buffer *dst_buf,
547 const struct vb2_v4l2_buffer *src_buf,
548 struct vicodec_ctx *ctx)
549 {
550 struct vicodec_q_data *q_dst = get_q_data(ctx,
551 V4L2_BUF_TYPE_VIDEO_CAPTURE);
552
553 vb2_set_plane_payload(&dst_buf->vb2_buf, 0, 0);
554 dst_buf->sequence = q_dst->sequence++;
555
556 v4l2_m2m_buf_copy_metadata(src_buf, dst_buf, !ctx->is_enc);
557 dst_buf->flags |= V4L2_BUF_FLAG_LAST;
558 v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE);
559 }
560
job_ready(void * priv)561 static int job_ready(void *priv)
562 {
563 static const u8 magic[] = {
564 0x4f, 0x4f, 0x4f, 0x4f, 0xff, 0xff, 0xff, 0xff
565 };
566 struct vicodec_ctx *ctx = priv;
567 struct vb2_v4l2_buffer *src_buf;
568 u8 *p_src;
569 u8 *p;
570 u32 sz;
571 u32 state;
572 struct vicodec_q_data *q_dst = get_q_data(ctx,
573 V4L2_BUF_TYPE_VIDEO_CAPTURE);
574 unsigned int flags;
575 unsigned int hdr_width_div;
576 unsigned int hdr_height_div;
577 unsigned int max_to_copy;
578 unsigned int comp_frame_size;
579
580 if (ctx->source_changed)
581 return 0;
582 if (ctx->is_stateless || ctx->is_enc || ctx->comp_has_frame)
583 return 1;
584
585 restart:
586 ctx->comp_has_next_frame = false;
587 src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
588 if (!src_buf)
589 return 0;
590 p_src = vb2_plane_vaddr(&src_buf->vb2_buf, 0);
591 sz = vb2_get_plane_payload(&src_buf->vb2_buf, 0);
592 p = p_src + ctx->cur_buf_offset;
593
594 state = VB2_BUF_STATE_DONE;
595
596 if (ctx->header_size < sizeof(struct fwht_cframe_hdr)) {
597 state = get_next_header(ctx, &p, p_src + sz - p);
598 if (ctx->header_size < sizeof(struct fwht_cframe_hdr)) {
599 if (v4l2_m2m_is_last_draining_src_buf(ctx->fh.m2m_ctx,
600 src_buf))
601 return 1;
602 job_remove_src_buf(ctx, state);
603 goto restart;
604 }
605 }
606
607 comp_frame_size = ntohl(ctx->state.header.size);
608
609 /*
610 * The current scanned frame might be the first frame of a new
611 * resolution so its size might be larger than ctx->comp_max_size.
612 * In that case it is copied up to the current buffer capacity and
613 * the copy will continue after allocating new large enough buffer
614 * when restreaming
615 */
616 max_to_copy = min(comp_frame_size, ctx->comp_max_size);
617
618 if (ctx->comp_size < max_to_copy) {
619 u32 copy = max_to_copy - ctx->comp_size;
620
621 if (copy > p_src + sz - p)
622 copy = p_src + sz - p;
623
624 memcpy(ctx->state.compressed_frame + ctx->comp_size,
625 p, copy);
626 p += copy;
627 ctx->comp_size += copy;
628 if (ctx->comp_size < max_to_copy) {
629 if (v4l2_m2m_is_last_draining_src_buf(ctx->fh.m2m_ctx,
630 src_buf))
631 return 1;
632 job_remove_src_buf(ctx, state);
633 goto restart;
634 }
635 }
636 ctx->cur_buf_offset = p - p_src;
637 if (ctx->comp_size == comp_frame_size)
638 ctx->comp_has_frame = true;
639 ctx->comp_has_next_frame = false;
640 if (ctx->comp_has_frame && sz - ctx->cur_buf_offset >=
641 sizeof(struct fwht_cframe_hdr)) {
642 struct fwht_cframe_hdr *p_hdr = (struct fwht_cframe_hdr *)p;
643 u32 frame_size = ntohl(p_hdr->size);
644 u32 remaining = sz - ctx->cur_buf_offset - sizeof(*p_hdr);
645
646 if (!memcmp(p, magic, sizeof(magic)))
647 ctx->comp_has_next_frame = remaining >= frame_size;
648 }
649 /*
650 * if the header is invalid the device_run will just drop the frame
651 * with an error
652 */
653 if (!is_header_valid(&ctx->state.header) && ctx->comp_has_frame)
654 return 1;
655 flags = ntohl(ctx->state.header.flags);
656 hdr_width_div = (flags & V4L2_FWHT_FL_CHROMA_FULL_WIDTH) ? 1 : 2;
657 hdr_height_div = (flags & V4L2_FWHT_FL_CHROMA_FULL_HEIGHT) ? 1 : 2;
658
659 if (ntohl(ctx->state.header.width) != q_dst->visible_width ||
660 ntohl(ctx->state.header.height) != q_dst->visible_height ||
661 !q_dst->info ||
662 hdr_width_div != q_dst->info->width_div ||
663 hdr_height_div != q_dst->info->height_div) {
664 static const struct v4l2_event rs_event = {
665 .type = V4L2_EVENT_SOURCE_CHANGE,
666 .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
667 };
668
669 struct vb2_v4l2_buffer *dst_buf =
670 v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
671
672 update_capture_data_from_header(ctx);
673 v4l2_event_queue_fh(&ctx->fh, &rs_event);
674 set_last_buffer(dst_buf, src_buf, ctx);
675 ctx->source_changed = true;
676 return 0;
677 }
678 return 1;
679 }
680
681 /*
682 * video ioctls
683 */
684
find_fmt(u32 fmt)685 static const struct v4l2_fwht_pixfmt_info *find_fmt(u32 fmt)
686 {
687 const struct v4l2_fwht_pixfmt_info *info =
688 v4l2_fwht_find_pixfmt(fmt);
689
690 if (!info)
691 info = v4l2_fwht_get_pixfmt(0);
692 return info;
693 }
694
vidioc_querycap(struct file * file,void * priv,struct v4l2_capability * cap)695 static int vidioc_querycap(struct file *file, void *priv,
696 struct v4l2_capability *cap)
697 {
698 strscpy(cap->driver, VICODEC_NAME, sizeof(cap->driver));
699 strscpy(cap->card, VICODEC_NAME, sizeof(cap->card));
700 snprintf(cap->bus_info, sizeof(cap->bus_info),
701 "platform:%s", VICODEC_NAME);
702 return 0;
703 }
704
enum_fmt(struct v4l2_fmtdesc * f,struct vicodec_ctx * ctx,bool is_out)705 static int enum_fmt(struct v4l2_fmtdesc *f, struct vicodec_ctx *ctx,
706 bool is_out)
707 {
708 bool is_uncomp = (ctx->is_enc && is_out) || (!ctx->is_enc && !is_out);
709
710 if (V4L2_TYPE_IS_MULTIPLANAR(f->type) && !multiplanar)
711 return -EINVAL;
712 if (!V4L2_TYPE_IS_MULTIPLANAR(f->type) && multiplanar)
713 return -EINVAL;
714
715 if (is_uncomp) {
716 const struct v4l2_fwht_pixfmt_info *info =
717 get_q_data(ctx, f->type)->info;
718
719 if (ctx->is_enc ||
720 !vb2_is_streaming(&ctx->fh.m2m_ctx->cap_q_ctx.q))
721 info = v4l2_fwht_get_pixfmt(f->index);
722 else
723 info = v4l2_fwht_find_nth_fmt(info->width_div,
724 info->height_div,
725 info->components_num,
726 info->pixenc,
727 f->index);
728 if (!info)
729 return -EINVAL;
730 f->pixelformat = info->id;
731 } else {
732 if (f->index)
733 return -EINVAL;
734 f->pixelformat = ctx->is_stateless ?
735 V4L2_PIX_FMT_FWHT_STATELESS : V4L2_PIX_FMT_FWHT;
736 if (!ctx->is_enc && !ctx->is_stateless)
737 f->flags = V4L2_FMT_FLAG_DYN_RESOLUTION |
738 V4L2_FMT_FLAG_CONTINUOUS_BYTESTREAM;
739 }
740 return 0;
741 }
742
vidioc_enum_fmt_vid_cap(struct file * file,void * priv,struct v4l2_fmtdesc * f)743 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
744 struct v4l2_fmtdesc *f)
745 {
746 struct vicodec_ctx *ctx = file2ctx(file);
747
748 return enum_fmt(f, ctx, false);
749 }
750
vidioc_enum_fmt_vid_out(struct file * file,void * priv,struct v4l2_fmtdesc * f)751 static int vidioc_enum_fmt_vid_out(struct file *file, void *priv,
752 struct v4l2_fmtdesc *f)
753 {
754 struct vicodec_ctx *ctx = file2ctx(file);
755
756 return enum_fmt(f, ctx, true);
757 }
758
vidioc_g_fmt(struct vicodec_ctx * ctx,struct v4l2_format * f)759 static int vidioc_g_fmt(struct vicodec_ctx *ctx, struct v4l2_format *f)
760 {
761 struct vb2_queue *vq;
762 struct vicodec_q_data *q_data;
763 struct v4l2_pix_format_mplane *pix_mp;
764 struct v4l2_pix_format *pix;
765 const struct v4l2_fwht_pixfmt_info *info;
766
767 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
768 if (!vq)
769 return -EINVAL;
770
771 q_data = get_q_data(ctx, f->type);
772 info = q_data->info;
773
774 switch (f->type) {
775 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
776 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
777 if (multiplanar)
778 return -EINVAL;
779 pix = &f->fmt.pix;
780 pix->width = q_data->coded_width;
781 pix->height = q_data->coded_height;
782 pix->field = V4L2_FIELD_NONE;
783 pix->pixelformat = info->id;
784 pix->bytesperline = q_data->coded_width *
785 info->bytesperline_mult;
786 pix->sizeimage = q_data->sizeimage;
787 pix->colorspace = ctx->state.colorspace;
788 pix->xfer_func = ctx->state.xfer_func;
789 pix->ycbcr_enc = ctx->state.ycbcr_enc;
790 pix->quantization = ctx->state.quantization;
791 break;
792
793 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
794 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
795 if (!multiplanar)
796 return -EINVAL;
797 pix_mp = &f->fmt.pix_mp;
798 pix_mp->width = q_data->coded_width;
799 pix_mp->height = q_data->coded_height;
800 pix_mp->field = V4L2_FIELD_NONE;
801 pix_mp->pixelformat = info->id;
802 pix_mp->num_planes = 1;
803 pix_mp->plane_fmt[0].bytesperline =
804 q_data->coded_width * info->bytesperline_mult;
805 pix_mp->plane_fmt[0].sizeimage = q_data->sizeimage;
806 pix_mp->colorspace = ctx->state.colorspace;
807 pix_mp->xfer_func = ctx->state.xfer_func;
808 pix_mp->ycbcr_enc = ctx->state.ycbcr_enc;
809 pix_mp->quantization = ctx->state.quantization;
810 break;
811 default:
812 return -EINVAL;
813 }
814 return 0;
815 }
816
vidioc_g_fmt_vid_out(struct file * file,void * priv,struct v4l2_format * f)817 static int vidioc_g_fmt_vid_out(struct file *file, void *priv,
818 struct v4l2_format *f)
819 {
820 return vidioc_g_fmt(file2ctx(file), f);
821 }
822
vidioc_g_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)823 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
824 struct v4l2_format *f)
825 {
826 return vidioc_g_fmt(file2ctx(file), f);
827 }
828
vidioc_try_fmt(struct vicodec_ctx * ctx,struct v4l2_format * f)829 static int vidioc_try_fmt(struct vicodec_ctx *ctx, struct v4l2_format *f)
830 {
831 struct v4l2_pix_format_mplane *pix_mp;
832 struct v4l2_pix_format *pix;
833 struct v4l2_plane_pix_format *plane;
834 const struct v4l2_fwht_pixfmt_info *info = ctx->is_stateless ?
835 &pixfmt_stateless_fwht : &pixfmt_fwht;
836
837 switch (f->type) {
838 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
839 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
840 pix = &f->fmt.pix;
841 if (pix->pixelformat != V4L2_PIX_FMT_FWHT &&
842 pix->pixelformat != V4L2_PIX_FMT_FWHT_STATELESS)
843 info = find_fmt(pix->pixelformat);
844
845 pix->width = clamp(pix->width, MIN_WIDTH, MAX_WIDTH);
846 pix->width = vic_round_dim(pix->width, info->width_div);
847
848 pix->height = clamp(pix->height, MIN_HEIGHT, MAX_HEIGHT);
849 pix->height = vic_round_dim(pix->height, info->height_div);
850
851 pix->field = V4L2_FIELD_NONE;
852 pix->bytesperline =
853 pix->width * info->bytesperline_mult;
854 pix->sizeimage = pix->width * pix->height *
855 info->sizeimage_mult / info->sizeimage_div;
856 if (pix->pixelformat == V4L2_PIX_FMT_FWHT)
857 pix->sizeimage += sizeof(struct fwht_cframe_hdr);
858 break;
859 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
860 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
861 pix_mp = &f->fmt.pix_mp;
862 plane = pix_mp->plane_fmt;
863 if (pix_mp->pixelformat != V4L2_PIX_FMT_FWHT &&
864 pix_mp->pixelformat != V4L2_PIX_FMT_FWHT_STATELESS)
865 info = find_fmt(pix_mp->pixelformat);
866 pix_mp->num_planes = 1;
867
868 pix_mp->width = clamp(pix_mp->width, MIN_WIDTH, MAX_WIDTH);
869 pix_mp->width = vic_round_dim(pix_mp->width, info->width_div);
870
871 pix_mp->height = clamp(pix_mp->height, MIN_HEIGHT, MAX_HEIGHT);
872 pix_mp->height = vic_round_dim(pix_mp->height,
873 info->height_div);
874
875 pix_mp->field = V4L2_FIELD_NONE;
876 plane->bytesperline =
877 pix_mp->width * info->bytesperline_mult;
878 plane->sizeimage = pix_mp->width * pix_mp->height *
879 info->sizeimage_mult / info->sizeimage_div;
880 if (pix_mp->pixelformat == V4L2_PIX_FMT_FWHT)
881 plane->sizeimage += sizeof(struct fwht_cframe_hdr);
882 break;
883 default:
884 return -EINVAL;
885 }
886
887 return 0;
888 }
889
vidioc_try_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)890 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
891 struct v4l2_format *f)
892 {
893 struct vicodec_ctx *ctx = file2ctx(file);
894 struct v4l2_pix_format_mplane *pix_mp;
895 struct v4l2_pix_format *pix;
896
897 switch (f->type) {
898 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
899 if (multiplanar)
900 return -EINVAL;
901 pix = &f->fmt.pix;
902 pix->pixelformat = ctx->is_enc ? V4L2_PIX_FMT_FWHT :
903 find_fmt(f->fmt.pix.pixelformat)->id;
904 pix->colorspace = ctx->state.colorspace;
905 pix->xfer_func = ctx->state.xfer_func;
906 pix->ycbcr_enc = ctx->state.ycbcr_enc;
907 pix->quantization = ctx->state.quantization;
908 break;
909 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
910 if (!multiplanar)
911 return -EINVAL;
912 pix_mp = &f->fmt.pix_mp;
913 pix_mp->pixelformat = ctx->is_enc ? V4L2_PIX_FMT_FWHT :
914 find_fmt(pix_mp->pixelformat)->id;
915 pix_mp->colorspace = ctx->state.colorspace;
916 pix_mp->xfer_func = ctx->state.xfer_func;
917 pix_mp->ycbcr_enc = ctx->state.ycbcr_enc;
918 pix_mp->quantization = ctx->state.quantization;
919 break;
920 default:
921 return -EINVAL;
922 }
923
924 return vidioc_try_fmt(ctx, f);
925 }
926
vidioc_try_fmt_vid_out(struct file * file,void * priv,struct v4l2_format * f)927 static int vidioc_try_fmt_vid_out(struct file *file, void *priv,
928 struct v4l2_format *f)
929 {
930 struct vicodec_ctx *ctx = file2ctx(file);
931 struct v4l2_pix_format_mplane *pix_mp;
932 struct v4l2_pix_format *pix;
933
934 switch (f->type) {
935 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
936 if (multiplanar)
937 return -EINVAL;
938 pix = &f->fmt.pix;
939 if (ctx->is_enc)
940 pix->pixelformat = find_fmt(pix->pixelformat)->id;
941 else if (ctx->is_stateless)
942 pix->pixelformat = V4L2_PIX_FMT_FWHT_STATELESS;
943 else
944 pix->pixelformat = V4L2_PIX_FMT_FWHT;
945 if (!pix->colorspace)
946 pix->colorspace = V4L2_COLORSPACE_REC709;
947 break;
948 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
949 if (!multiplanar)
950 return -EINVAL;
951 pix_mp = &f->fmt.pix_mp;
952 if (ctx->is_enc)
953 pix_mp->pixelformat = find_fmt(pix_mp->pixelformat)->id;
954 else if (ctx->is_stateless)
955 pix_mp->pixelformat = V4L2_PIX_FMT_FWHT_STATELESS;
956 else
957 pix_mp->pixelformat = V4L2_PIX_FMT_FWHT;
958 if (!pix_mp->colorspace)
959 pix_mp->colorspace = V4L2_COLORSPACE_REC709;
960 break;
961 default:
962 return -EINVAL;
963 }
964
965 return vidioc_try_fmt(ctx, f);
966 }
967
vidioc_s_fmt(struct vicodec_ctx * ctx,struct v4l2_format * f)968 static int vidioc_s_fmt(struct vicodec_ctx *ctx, struct v4l2_format *f)
969 {
970 struct vicodec_q_data *q_data;
971 struct vb2_queue *vq;
972 bool fmt_changed = true;
973 struct v4l2_pix_format_mplane *pix_mp;
974 struct v4l2_pix_format *pix;
975
976 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
977 if (!vq)
978 return -EINVAL;
979
980 q_data = get_q_data(ctx, f->type);
981 if (!q_data)
982 return -EINVAL;
983
984 switch (f->type) {
985 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
986 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
987 pix = &f->fmt.pix;
988 if (ctx->is_enc && V4L2_TYPE_IS_OUTPUT(f->type))
989 fmt_changed =
990 !q_data->info ||
991 q_data->info->id != pix->pixelformat ||
992 q_data->coded_width != pix->width ||
993 q_data->coded_height != pix->height;
994
995 if (vb2_is_busy(vq) && fmt_changed)
996 return -EBUSY;
997
998 if (pix->pixelformat == V4L2_PIX_FMT_FWHT)
999 q_data->info = &pixfmt_fwht;
1000 else if (pix->pixelformat == V4L2_PIX_FMT_FWHT_STATELESS)
1001 q_data->info = &pixfmt_stateless_fwht;
1002 else
1003 q_data->info = find_fmt(pix->pixelformat);
1004 q_data->coded_width = pix->width;
1005 q_data->coded_height = pix->height;
1006 q_data->sizeimage = pix->sizeimage;
1007 break;
1008 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1009 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1010 pix_mp = &f->fmt.pix_mp;
1011 if (ctx->is_enc && V4L2_TYPE_IS_OUTPUT(f->type))
1012 fmt_changed =
1013 !q_data->info ||
1014 q_data->info->id != pix_mp->pixelformat ||
1015 q_data->coded_width != pix_mp->width ||
1016 q_data->coded_height != pix_mp->height;
1017
1018 if (vb2_is_busy(vq) && fmt_changed)
1019 return -EBUSY;
1020
1021 if (pix_mp->pixelformat == V4L2_PIX_FMT_FWHT)
1022 q_data->info = &pixfmt_fwht;
1023 else if (pix_mp->pixelformat == V4L2_PIX_FMT_FWHT_STATELESS)
1024 q_data->info = &pixfmt_stateless_fwht;
1025 else
1026 q_data->info = find_fmt(pix_mp->pixelformat);
1027 q_data->coded_width = pix_mp->width;
1028 q_data->coded_height = pix_mp->height;
1029 q_data->sizeimage = pix_mp->plane_fmt[0].sizeimage;
1030 break;
1031 default:
1032 return -EINVAL;
1033 }
1034
1035 dprintk(ctx->dev,
1036 "Setting format for type %d, coded wxh: %dx%d, fourcc: 0x%08x\n",
1037 f->type, q_data->coded_width, q_data->coded_height,
1038 q_data->info->id);
1039
1040 return 0;
1041 }
1042
vidioc_s_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)1043 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
1044 struct v4l2_format *f)
1045 {
1046 int ret;
1047
1048 ret = vidioc_try_fmt_vid_cap(file, priv, f);
1049 if (ret)
1050 return ret;
1051
1052 return vidioc_s_fmt(file2ctx(file), f);
1053 }
1054
vidioc_s_fmt_vid_out(struct file * file,void * priv,struct v4l2_format * f)1055 static int vidioc_s_fmt_vid_out(struct file *file, void *priv,
1056 struct v4l2_format *f)
1057 {
1058 struct vicodec_ctx *ctx = file2ctx(file);
1059 struct vicodec_q_data *q_data;
1060 struct vicodec_q_data *q_data_cap;
1061 struct v4l2_pix_format *pix;
1062 struct v4l2_pix_format_mplane *pix_mp;
1063 u32 coded_w = 0, coded_h = 0;
1064 unsigned int size = 0;
1065 int ret;
1066
1067 q_data = get_q_data(ctx, f->type);
1068 q_data_cap = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
1069
1070 ret = vidioc_try_fmt_vid_out(file, priv, f);
1071 if (ret)
1072 return ret;
1073
1074 if (ctx->is_enc) {
1075 struct vb2_queue *vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
1076 struct vb2_queue *vq_cap = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
1077 V4L2_BUF_TYPE_VIDEO_CAPTURE);
1078 const struct v4l2_fwht_pixfmt_info *info = ctx->is_stateless ?
1079 &pixfmt_stateless_fwht : &pixfmt_fwht;
1080
1081 if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1082 coded_w = f->fmt.pix.width;
1083 coded_h = f->fmt.pix.height;
1084 } else {
1085 coded_w = f->fmt.pix_mp.width;
1086 coded_h = f->fmt.pix_mp.height;
1087 }
1088 if (vb2_is_busy(vq) && (coded_w != q_data->coded_width ||
1089 coded_h != q_data->coded_height))
1090 return -EBUSY;
1091 size = coded_w * coded_h *
1092 info->sizeimage_mult / info->sizeimage_div;
1093 if (!ctx->is_stateless)
1094 size += sizeof(struct fwht_cframe_hdr);
1095
1096 if (vb2_is_busy(vq_cap) && size > q_data_cap->sizeimage)
1097 return -EBUSY;
1098 }
1099
1100 ret = vidioc_s_fmt(file2ctx(file), f);
1101 if (!ret) {
1102 if (ctx->is_enc) {
1103 q_data->visible_width = coded_w;
1104 q_data->visible_height = coded_h;
1105 q_data_cap->coded_width = coded_w;
1106 q_data_cap->coded_height = coded_h;
1107 q_data_cap->sizeimage = size;
1108 }
1109
1110 switch (f->type) {
1111 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1112 pix = &f->fmt.pix;
1113 ctx->state.colorspace = pix->colorspace;
1114 ctx->state.xfer_func = pix->xfer_func;
1115 ctx->state.ycbcr_enc = pix->ycbcr_enc;
1116 ctx->state.quantization = pix->quantization;
1117 break;
1118 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1119 pix_mp = &f->fmt.pix_mp;
1120 ctx->state.colorspace = pix_mp->colorspace;
1121 ctx->state.xfer_func = pix_mp->xfer_func;
1122 ctx->state.ycbcr_enc = pix_mp->ycbcr_enc;
1123 ctx->state.quantization = pix_mp->quantization;
1124 break;
1125 default:
1126 break;
1127 }
1128 }
1129 return ret;
1130 }
1131
vidioc_g_selection(struct file * file,void * priv,struct v4l2_selection * s)1132 static int vidioc_g_selection(struct file *file, void *priv,
1133 struct v4l2_selection *s)
1134 {
1135 struct vicodec_ctx *ctx = file2ctx(file);
1136 struct vicodec_q_data *q_data;
1137
1138 q_data = get_q_data(ctx, s->type);
1139 if (!q_data)
1140 return -EINVAL;
1141 /*
1142 * encoder supports only cropping on the OUTPUT buffer
1143 * decoder supports only composing on the CAPTURE buffer
1144 */
1145 if (ctx->is_enc && s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1146 switch (s->target) {
1147 case V4L2_SEL_TGT_CROP:
1148 s->r.left = 0;
1149 s->r.top = 0;
1150 s->r.width = q_data->visible_width;
1151 s->r.height = q_data->visible_height;
1152 return 0;
1153 case V4L2_SEL_TGT_CROP_DEFAULT:
1154 case V4L2_SEL_TGT_CROP_BOUNDS:
1155 s->r.left = 0;
1156 s->r.top = 0;
1157 s->r.width = q_data->coded_width;
1158 s->r.height = q_data->coded_height;
1159 return 0;
1160 }
1161 } else if (!ctx->is_enc && s->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1162 switch (s->target) {
1163 case V4L2_SEL_TGT_COMPOSE:
1164 s->r.left = 0;
1165 s->r.top = 0;
1166 s->r.width = q_data->visible_width;
1167 s->r.height = q_data->visible_height;
1168 return 0;
1169 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
1170 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1171 s->r.left = 0;
1172 s->r.top = 0;
1173 s->r.width = q_data->coded_width;
1174 s->r.height = q_data->coded_height;
1175 return 0;
1176 }
1177 }
1178 return -EINVAL;
1179 }
1180
vidioc_s_selection(struct file * file,void * priv,struct v4l2_selection * s)1181 static int vidioc_s_selection(struct file *file, void *priv,
1182 struct v4l2_selection *s)
1183 {
1184 struct vicodec_ctx *ctx = file2ctx(file);
1185 struct vicodec_q_data *q_data;
1186
1187 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1188 return -EINVAL;
1189
1190 q_data = get_q_data(ctx, s->type);
1191 if (!q_data)
1192 return -EINVAL;
1193
1194 if (!ctx->is_enc || s->target != V4L2_SEL_TGT_CROP)
1195 return -EINVAL;
1196
1197 s->r.left = 0;
1198 s->r.top = 0;
1199 q_data->visible_width = clamp(s->r.width, MIN_WIDTH,
1200 q_data->coded_width);
1201 s->r.width = q_data->visible_width;
1202 q_data->visible_height = clamp(s->r.height, MIN_HEIGHT,
1203 q_data->coded_height);
1204 s->r.height = q_data->visible_height;
1205 return 0;
1206 }
1207
vicodec_encoder_cmd(struct file * file,void * fh,struct v4l2_encoder_cmd * ec)1208 static int vicodec_encoder_cmd(struct file *file, void *fh,
1209 struct v4l2_encoder_cmd *ec)
1210 {
1211 struct vicodec_ctx *ctx = file2ctx(file);
1212 int ret;
1213
1214 ret = v4l2_m2m_ioctl_try_encoder_cmd(file, fh, ec);
1215 if (ret < 0)
1216 return ret;
1217
1218 if (!vb2_is_streaming(&ctx->fh.m2m_ctx->cap_q_ctx.q) ||
1219 !vb2_is_streaming(&ctx->fh.m2m_ctx->out_q_ctx.q))
1220 return 0;
1221
1222 ret = v4l2_m2m_ioctl_encoder_cmd(file, fh, ec);
1223 if (ret < 0)
1224 return ret;
1225
1226 if (ec->cmd == V4L2_ENC_CMD_STOP &&
1227 v4l2_m2m_has_stopped(ctx->fh.m2m_ctx))
1228 v4l2_event_queue_fh(&ctx->fh, &vicodec_eos_event);
1229
1230 if (ec->cmd == V4L2_ENC_CMD_START &&
1231 v4l2_m2m_has_stopped(ctx->fh.m2m_ctx))
1232 vb2_clear_last_buffer_dequeued(&ctx->fh.m2m_ctx->cap_q_ctx.q);
1233
1234 return 0;
1235 }
1236
vicodec_decoder_cmd(struct file * file,void * fh,struct v4l2_decoder_cmd * dc)1237 static int vicodec_decoder_cmd(struct file *file, void *fh,
1238 struct v4l2_decoder_cmd *dc)
1239 {
1240 struct vicodec_ctx *ctx = file2ctx(file);
1241 int ret;
1242
1243 ret = v4l2_m2m_ioctl_try_decoder_cmd(file, fh, dc);
1244 if (ret < 0)
1245 return ret;
1246
1247 if (!vb2_is_streaming(&ctx->fh.m2m_ctx->cap_q_ctx.q) ||
1248 !vb2_is_streaming(&ctx->fh.m2m_ctx->out_q_ctx.q))
1249 return 0;
1250
1251 ret = v4l2_m2m_ioctl_decoder_cmd(file, fh, dc);
1252 if (ret < 0)
1253 return ret;
1254
1255 if (dc->cmd == V4L2_DEC_CMD_STOP &&
1256 v4l2_m2m_has_stopped(ctx->fh.m2m_ctx))
1257 v4l2_event_queue_fh(&ctx->fh, &vicodec_eos_event);
1258
1259 if (dc->cmd == V4L2_DEC_CMD_START &&
1260 v4l2_m2m_has_stopped(ctx->fh.m2m_ctx))
1261 vb2_clear_last_buffer_dequeued(&ctx->fh.m2m_ctx->cap_q_ctx.q);
1262
1263 return 0;
1264 }
1265
vicodec_enum_framesizes(struct file * file,void * fh,struct v4l2_frmsizeenum * fsize)1266 static int vicodec_enum_framesizes(struct file *file, void *fh,
1267 struct v4l2_frmsizeenum *fsize)
1268 {
1269 switch (fsize->pixel_format) {
1270 case V4L2_PIX_FMT_FWHT_STATELESS:
1271 break;
1272 case V4L2_PIX_FMT_FWHT:
1273 break;
1274 default:
1275 if (find_fmt(fsize->pixel_format)->id == fsize->pixel_format)
1276 break;
1277 return -EINVAL;
1278 }
1279
1280 if (fsize->index)
1281 return -EINVAL;
1282
1283 fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
1284
1285 fsize->stepwise.min_width = MIN_WIDTH;
1286 fsize->stepwise.max_width = MAX_WIDTH;
1287 fsize->stepwise.step_width = 8;
1288 fsize->stepwise.min_height = MIN_HEIGHT;
1289 fsize->stepwise.max_height = MAX_HEIGHT;
1290 fsize->stepwise.step_height = 8;
1291
1292 return 0;
1293 }
1294
vicodec_subscribe_event(struct v4l2_fh * fh,const struct v4l2_event_subscription * sub)1295 static int vicodec_subscribe_event(struct v4l2_fh *fh,
1296 const struct v4l2_event_subscription *sub)
1297 {
1298 struct vicodec_ctx *ctx = container_of(fh, struct vicodec_ctx, fh);
1299
1300 switch (sub->type) {
1301 case V4L2_EVENT_SOURCE_CHANGE:
1302 if (ctx->is_enc)
1303 return -EINVAL;
1304 fallthrough;
1305 case V4L2_EVENT_EOS:
1306 if (ctx->is_stateless)
1307 return -EINVAL;
1308 return v4l2_event_subscribe(fh, sub, 0, NULL);
1309 default:
1310 return v4l2_ctrl_subscribe_event(fh, sub);
1311 }
1312 }
1313
1314 static const struct v4l2_ioctl_ops vicodec_ioctl_ops = {
1315 .vidioc_querycap = vidioc_querycap,
1316
1317 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1318 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1319 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1320 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1321
1322 .vidioc_g_fmt_vid_cap_mplane = vidioc_g_fmt_vid_cap,
1323 .vidioc_try_fmt_vid_cap_mplane = vidioc_try_fmt_vid_cap,
1324 .vidioc_s_fmt_vid_cap_mplane = vidioc_s_fmt_vid_cap,
1325
1326 .vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out,
1327 .vidioc_g_fmt_vid_out = vidioc_g_fmt_vid_out,
1328 .vidioc_try_fmt_vid_out = vidioc_try_fmt_vid_out,
1329 .vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out,
1330
1331 .vidioc_g_fmt_vid_out_mplane = vidioc_g_fmt_vid_out,
1332 .vidioc_try_fmt_vid_out_mplane = vidioc_try_fmt_vid_out,
1333 .vidioc_s_fmt_vid_out_mplane = vidioc_s_fmt_vid_out,
1334
1335 .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
1336 .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
1337 .vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
1338 .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
1339 .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
1340 .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
1341 .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
1342
1343 .vidioc_streamon = v4l2_m2m_ioctl_streamon,
1344 .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
1345
1346 .vidioc_g_selection = vidioc_g_selection,
1347 .vidioc_s_selection = vidioc_s_selection,
1348
1349 .vidioc_try_encoder_cmd = v4l2_m2m_ioctl_try_encoder_cmd,
1350 .vidioc_encoder_cmd = vicodec_encoder_cmd,
1351 .vidioc_try_decoder_cmd = v4l2_m2m_ioctl_try_decoder_cmd,
1352 .vidioc_decoder_cmd = vicodec_decoder_cmd,
1353 .vidioc_enum_framesizes = vicodec_enum_framesizes,
1354
1355 .vidioc_subscribe_event = vicodec_subscribe_event,
1356 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1357 };
1358
1359
1360 /*
1361 * Queue operations
1362 */
1363
vicodec_queue_setup(struct vb2_queue * vq,unsigned int * nbuffers,unsigned int * nplanes,unsigned int sizes[],struct device * alloc_devs[])1364 static int vicodec_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
1365 unsigned int *nplanes, unsigned int sizes[],
1366 struct device *alloc_devs[])
1367 {
1368 struct vicodec_ctx *ctx = vb2_get_drv_priv(vq);
1369 struct vicodec_q_data *q_data = get_q_data(ctx, vq->type);
1370 unsigned int size = q_data->sizeimage;
1371
1372 if (*nplanes)
1373 return sizes[0] < size ? -EINVAL : 0;
1374
1375 *nplanes = 1;
1376 sizes[0] = size;
1377 q_data->vb2_sizeimage = size;
1378 return 0;
1379 }
1380
vicodec_buf_out_validate(struct vb2_buffer * vb)1381 static int vicodec_buf_out_validate(struct vb2_buffer *vb)
1382 {
1383 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1384
1385 vbuf->field = V4L2_FIELD_NONE;
1386 return 0;
1387 }
1388
vicodec_buf_prepare(struct vb2_buffer * vb)1389 static int vicodec_buf_prepare(struct vb2_buffer *vb)
1390 {
1391 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1392 struct vicodec_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1393 struct vicodec_q_data *q_data;
1394
1395 dprintk(ctx->dev, "type: %d\n", vb->vb2_queue->type);
1396
1397 q_data = get_q_data(ctx, vb->vb2_queue->type);
1398 if (V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type)) {
1399 if (vbuf->field == V4L2_FIELD_ANY)
1400 vbuf->field = V4L2_FIELD_NONE;
1401 if (vbuf->field != V4L2_FIELD_NONE) {
1402 dprintk(ctx->dev, "%s field isn't supported\n",
1403 __func__);
1404 return -EINVAL;
1405 }
1406 }
1407
1408 if (vb2_plane_size(vb, 0) < q_data->vb2_sizeimage) {
1409 dprintk(ctx->dev,
1410 "%s data will not fit into plane (%lu < %lu)\n",
1411 __func__, vb2_plane_size(vb, 0),
1412 (long)q_data->vb2_sizeimage);
1413 return -EINVAL;
1414 }
1415
1416 return 0;
1417 }
1418
vicodec_buf_queue(struct vb2_buffer * vb)1419 static void vicodec_buf_queue(struct vb2_buffer *vb)
1420 {
1421 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1422 struct vicodec_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1423 unsigned int sz = vb2_get_plane_payload(&vbuf->vb2_buf, 0);
1424 u8 *p_src = vb2_plane_vaddr(&vbuf->vb2_buf, 0);
1425 u8 *p = p_src;
1426 struct vb2_queue *vq_out = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
1427 V4L2_BUF_TYPE_VIDEO_OUTPUT);
1428 struct vb2_queue *vq_cap = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
1429 V4L2_BUF_TYPE_VIDEO_CAPTURE);
1430 bool header_valid = false;
1431 static const struct v4l2_event rs_event = {
1432 .type = V4L2_EVENT_SOURCE_CHANGE,
1433 .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
1434 };
1435
1436 if (V4L2_TYPE_IS_CAPTURE(vb->vb2_queue->type) &&
1437 vb2_is_streaming(vb->vb2_queue) &&
1438 v4l2_m2m_dst_buf_is_last(ctx->fh.m2m_ctx)) {
1439 unsigned int i;
1440
1441 for (i = 0; i < vb->num_planes; i++)
1442 vb2_set_plane_payload(vb, i, 0);
1443
1444 vbuf->field = V4L2_FIELD_NONE;
1445 vbuf->sequence =
1446 get_q_data(ctx, vb->vb2_queue->type)->sequence++;
1447
1448 v4l2_m2m_last_buffer_done(ctx->fh.m2m_ctx, vbuf);
1449 v4l2_event_queue_fh(&ctx->fh, &vicodec_eos_event);
1450 return;
1451 }
1452
1453 /* buf_queue handles only the first source change event */
1454 if (ctx->first_source_change_sent) {
1455 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
1456 return;
1457 }
1458
1459 /*
1460 * if both queues are streaming, the source change event is
1461 * handled in job_ready
1462 */
1463 if (vb2_is_streaming(vq_cap) && vb2_is_streaming(vq_out)) {
1464 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
1465 return;
1466 }
1467
1468 /*
1469 * source change event is relevant only for the stateful decoder
1470 * in the compressed stream
1471 */
1472 if (ctx->is_stateless || ctx->is_enc ||
1473 V4L2_TYPE_IS_CAPTURE(vb->vb2_queue->type)) {
1474 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
1475 return;
1476 }
1477
1478 do {
1479 enum vb2_buffer_state state =
1480 get_next_header(ctx, &p, p_src + sz - p);
1481
1482 if (ctx->header_size < sizeof(struct fwht_cframe_hdr)) {
1483 v4l2_m2m_buf_done(vbuf, state);
1484 return;
1485 }
1486 header_valid = is_header_valid(&ctx->state.header);
1487 /*
1488 * p points right after the end of the header in the
1489 * buffer. If the header is invalid we set p to point
1490 * to the next byte after the start of the header
1491 */
1492 if (!header_valid) {
1493 p = p - sizeof(struct fwht_cframe_hdr) + 1;
1494 if (p < p_src)
1495 p = p_src;
1496 ctx->header_size = 0;
1497 ctx->comp_magic_cnt = 0;
1498 }
1499
1500 } while (!header_valid);
1501
1502 ctx->cur_buf_offset = p - p_src;
1503 update_capture_data_from_header(ctx);
1504 ctx->first_source_change_sent = true;
1505 v4l2_event_queue_fh(&ctx->fh, &rs_event);
1506 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
1507 }
1508
vicodec_return_bufs(struct vb2_queue * q,u32 state)1509 static void vicodec_return_bufs(struct vb2_queue *q, u32 state)
1510 {
1511 struct vicodec_ctx *ctx = vb2_get_drv_priv(q);
1512 struct vb2_v4l2_buffer *vbuf;
1513
1514 for (;;) {
1515 if (V4L2_TYPE_IS_OUTPUT(q->type))
1516 vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
1517 else
1518 vbuf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
1519 if (vbuf == NULL)
1520 return;
1521 v4l2_ctrl_request_complete(vbuf->vb2_buf.req_obj.req,
1522 &ctx->hdl);
1523 spin_lock(ctx->lock);
1524 v4l2_m2m_buf_done(vbuf, state);
1525 spin_unlock(ctx->lock);
1526 }
1527 }
1528
total_frame_size(struct vicodec_q_data * q_data)1529 static unsigned int total_frame_size(struct vicodec_q_data *q_data)
1530 {
1531 unsigned int size;
1532 unsigned int chroma_div;
1533
1534 if (!q_data->info) {
1535 WARN_ON(1);
1536 return 0;
1537 }
1538 size = q_data->coded_width * q_data->coded_height;
1539 chroma_div = q_data->info->width_div * q_data->info->height_div;
1540
1541 if (q_data->info->components_num == 4)
1542 return 2 * size + 2 * (size / chroma_div);
1543 else if (q_data->info->components_num == 3)
1544 return size + 2 * (size / chroma_div);
1545 return size;
1546 }
1547
vicodec_start_streaming(struct vb2_queue * q,unsigned int count)1548 static int vicodec_start_streaming(struct vb2_queue *q,
1549 unsigned int count)
1550 {
1551 struct vicodec_ctx *ctx = vb2_get_drv_priv(q);
1552 struct vicodec_q_data *q_data = get_q_data(ctx, q->type);
1553 struct v4l2_fwht_state *state = &ctx->state;
1554 const struct v4l2_fwht_pixfmt_info *info = q_data->info;
1555 unsigned int size = q_data->coded_width * q_data->coded_height;
1556 unsigned int chroma_div;
1557 unsigned int total_planes_size;
1558 u8 *new_comp_frame = NULL;
1559
1560 chroma_div = info->width_div * info->height_div;
1561 q_data->sequence = 0;
1562
1563 v4l2_m2m_update_start_streaming_state(ctx->fh.m2m_ctx, q);
1564
1565 state->gop_cnt = 0;
1566
1567 if ((V4L2_TYPE_IS_OUTPUT(q->type) && !ctx->is_enc) ||
1568 (V4L2_TYPE_IS_CAPTURE(q->type) && ctx->is_enc))
1569 return 0;
1570
1571 if (info->id == V4L2_PIX_FMT_FWHT ||
1572 info->id == V4L2_PIX_FMT_FWHT_STATELESS) {
1573 vicodec_return_bufs(q, VB2_BUF_STATE_QUEUED);
1574 return -EINVAL;
1575 }
1576 total_planes_size = total_frame_size(q_data);
1577 ctx->comp_max_size = total_planes_size;
1578
1579 state->visible_width = q_data->visible_width;
1580 state->visible_height = q_data->visible_height;
1581 state->coded_width = q_data->coded_width;
1582 state->coded_height = q_data->coded_height;
1583 state->stride = q_data->coded_width *
1584 info->bytesperline_mult;
1585
1586 if (ctx->is_stateless) {
1587 state->ref_stride = state->stride;
1588 return 0;
1589 }
1590 state->ref_stride = q_data->coded_width * info->luma_alpha_step;
1591
1592 state->ref_frame.buf = kvmalloc(total_planes_size, GFP_KERNEL);
1593 state->ref_frame.luma = state->ref_frame.buf;
1594 new_comp_frame = kvmalloc(ctx->comp_max_size, GFP_KERNEL);
1595
1596 if (!state->ref_frame.luma || !new_comp_frame) {
1597 kvfree(state->ref_frame.luma);
1598 kvfree(new_comp_frame);
1599 vicodec_return_bufs(q, VB2_BUF_STATE_QUEUED);
1600 return -ENOMEM;
1601 }
1602 /*
1603 * if state->compressed_frame was already allocated then
1604 * it contain data of the first frame of the new resolution
1605 */
1606 if (state->compressed_frame) {
1607 if (ctx->comp_size > ctx->comp_max_size)
1608 ctx->comp_size = ctx->comp_max_size;
1609
1610 memcpy(new_comp_frame,
1611 state->compressed_frame, ctx->comp_size);
1612 }
1613
1614 kvfree(state->compressed_frame);
1615 state->compressed_frame = new_comp_frame;
1616
1617 if (info->components_num < 3) {
1618 state->ref_frame.cb = NULL;
1619 state->ref_frame.cr = NULL;
1620 state->ref_frame.alpha = NULL;
1621 return 0;
1622 }
1623
1624 state->ref_frame.cb = state->ref_frame.luma + size;
1625 state->ref_frame.cr = state->ref_frame.cb + size / chroma_div;
1626
1627 if (info->components_num == 4)
1628 state->ref_frame.alpha =
1629 state->ref_frame.cr + size / chroma_div;
1630 else
1631 state->ref_frame.alpha = NULL;
1632
1633 return 0;
1634 }
1635
vicodec_stop_streaming(struct vb2_queue * q)1636 static void vicodec_stop_streaming(struct vb2_queue *q)
1637 {
1638 struct vicodec_ctx *ctx = vb2_get_drv_priv(q);
1639
1640 vicodec_return_bufs(q, VB2_BUF_STATE_ERROR);
1641
1642 v4l2_m2m_update_stop_streaming_state(ctx->fh.m2m_ctx, q);
1643
1644 if (V4L2_TYPE_IS_OUTPUT(q->type) &&
1645 v4l2_m2m_has_stopped(ctx->fh.m2m_ctx))
1646 v4l2_event_queue_fh(&ctx->fh, &vicodec_eos_event);
1647
1648 if (!ctx->is_enc && V4L2_TYPE_IS_OUTPUT(q->type))
1649 ctx->first_source_change_sent = false;
1650
1651 if ((!V4L2_TYPE_IS_OUTPUT(q->type) && !ctx->is_enc) ||
1652 (V4L2_TYPE_IS_OUTPUT(q->type) && ctx->is_enc)) {
1653 if (!ctx->is_stateless)
1654 kvfree(ctx->state.ref_frame.buf);
1655 ctx->state.ref_frame.buf = NULL;
1656 ctx->state.ref_frame.luma = NULL;
1657 ctx->comp_max_size = 0;
1658 ctx->source_changed = false;
1659 }
1660 if (V4L2_TYPE_IS_OUTPUT(q->type) && !ctx->is_enc) {
1661 ctx->cur_buf_offset = 0;
1662 ctx->comp_size = 0;
1663 ctx->header_size = 0;
1664 ctx->comp_magic_cnt = 0;
1665 ctx->comp_has_frame = false;
1666 ctx->comp_has_next_frame = false;
1667 }
1668 }
1669
vicodec_buf_request_complete(struct vb2_buffer * vb)1670 static void vicodec_buf_request_complete(struct vb2_buffer *vb)
1671 {
1672 struct vicodec_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1673
1674 v4l2_ctrl_request_complete(vb->req_obj.req, &ctx->hdl);
1675 }
1676
1677
1678 static const struct vb2_ops vicodec_qops = {
1679 .queue_setup = vicodec_queue_setup,
1680 .buf_out_validate = vicodec_buf_out_validate,
1681 .buf_prepare = vicodec_buf_prepare,
1682 .buf_queue = vicodec_buf_queue,
1683 .buf_request_complete = vicodec_buf_request_complete,
1684 .start_streaming = vicodec_start_streaming,
1685 .stop_streaming = vicodec_stop_streaming,
1686 .wait_prepare = vb2_ops_wait_prepare,
1687 .wait_finish = vb2_ops_wait_finish,
1688 };
1689
queue_init(void * priv,struct vb2_queue * src_vq,struct vb2_queue * dst_vq)1690 static int queue_init(void *priv, struct vb2_queue *src_vq,
1691 struct vb2_queue *dst_vq)
1692 {
1693 struct vicodec_ctx *ctx = priv;
1694 int ret;
1695
1696 src_vq->type = (multiplanar ?
1697 V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE :
1698 V4L2_BUF_TYPE_VIDEO_OUTPUT);
1699 src_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1700 src_vq->drv_priv = ctx;
1701 src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
1702 src_vq->ops = &vicodec_qops;
1703 src_vq->mem_ops = &vb2_vmalloc_memops;
1704 src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
1705 if (ctx->is_enc)
1706 src_vq->lock = &ctx->dev->stateful_enc.mutex;
1707 else if (ctx->is_stateless)
1708 src_vq->lock = &ctx->dev->stateless_dec.mutex;
1709 else
1710 src_vq->lock = &ctx->dev->stateful_dec.mutex;
1711 src_vq->supports_requests = ctx->is_stateless;
1712 src_vq->requires_requests = ctx->is_stateless;
1713 ret = vb2_queue_init(src_vq);
1714 if (ret)
1715 return ret;
1716
1717 dst_vq->type = (multiplanar ?
1718 V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE :
1719 V4L2_BUF_TYPE_VIDEO_CAPTURE);
1720 dst_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1721 dst_vq->drv_priv = ctx;
1722 dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
1723 dst_vq->ops = &vicodec_qops;
1724 dst_vq->mem_ops = &vb2_vmalloc_memops;
1725 dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
1726 dst_vq->lock = src_vq->lock;
1727
1728 return vb2_queue_init(dst_vq);
1729 }
1730
vicodec_try_ctrl(struct v4l2_ctrl * ctrl)1731 static int vicodec_try_ctrl(struct v4l2_ctrl *ctrl)
1732 {
1733 struct vicodec_ctx *ctx = container_of(ctrl->handler,
1734 struct vicodec_ctx, hdl);
1735 const struct v4l2_ctrl_fwht_params *params;
1736 struct vicodec_q_data *q_dst = get_q_data(ctx,
1737 V4L2_BUF_TYPE_VIDEO_CAPTURE);
1738
1739 switch (ctrl->id) {
1740 case V4L2_CID_STATELESS_FWHT_PARAMS:
1741 if (!q_dst->info)
1742 return -EINVAL;
1743 params = ctrl->p_new.p_fwht_params;
1744 if (params->width > q_dst->coded_width ||
1745 params->width < MIN_WIDTH ||
1746 params->height > q_dst->coded_height ||
1747 params->height < MIN_HEIGHT)
1748 return -EINVAL;
1749 if (!validate_by_version(params->flags, params->version))
1750 return -EINVAL;
1751 if (!validate_stateless_params_flags(params, q_dst->info))
1752 return -EINVAL;
1753 return 0;
1754 default:
1755 return 0;
1756 }
1757 return 0;
1758 }
1759
update_header_from_stateless_params(struct vicodec_ctx * ctx,const struct v4l2_ctrl_fwht_params * params)1760 static void update_header_from_stateless_params(struct vicodec_ctx *ctx,
1761 const struct v4l2_ctrl_fwht_params *params)
1762 {
1763 struct fwht_cframe_hdr *p_hdr = &ctx->state.header;
1764
1765 p_hdr->magic1 = FWHT_MAGIC1;
1766 p_hdr->magic2 = FWHT_MAGIC2;
1767 p_hdr->version = htonl(params->version);
1768 p_hdr->width = htonl(params->width);
1769 p_hdr->height = htonl(params->height);
1770 p_hdr->flags = htonl(params->flags);
1771 p_hdr->colorspace = htonl(params->colorspace);
1772 p_hdr->xfer_func = htonl(params->xfer_func);
1773 p_hdr->ycbcr_enc = htonl(params->ycbcr_enc);
1774 p_hdr->quantization = htonl(params->quantization);
1775 }
1776
vicodec_s_ctrl(struct v4l2_ctrl * ctrl)1777 static int vicodec_s_ctrl(struct v4l2_ctrl *ctrl)
1778 {
1779 struct vicodec_ctx *ctx = container_of(ctrl->handler,
1780 struct vicodec_ctx, hdl);
1781 const struct v4l2_ctrl_fwht_params *params;
1782
1783 switch (ctrl->id) {
1784 case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
1785 ctx->state.gop_size = ctrl->val;
1786 return 0;
1787 case V4L2_CID_FWHT_I_FRAME_QP:
1788 ctx->state.i_frame_qp = ctrl->val;
1789 return 0;
1790 case V4L2_CID_FWHT_P_FRAME_QP:
1791 ctx->state.p_frame_qp = ctrl->val;
1792 return 0;
1793 case V4L2_CID_STATELESS_FWHT_PARAMS:
1794 params = ctrl->p_new.p_fwht_params;
1795 update_header_from_stateless_params(ctx, params);
1796 ctx->state.ref_frame_ts = params->backward_ref_ts;
1797 return 0;
1798 }
1799 return -EINVAL;
1800 }
1801
1802 static const struct v4l2_ctrl_ops vicodec_ctrl_ops = {
1803 .s_ctrl = vicodec_s_ctrl,
1804 .try_ctrl = vicodec_try_ctrl,
1805 };
1806
1807 static const struct v4l2_ctrl_config vicodec_ctrl_stateless_state = {
1808 .ops = &vicodec_ctrl_ops,
1809 .id = V4L2_CID_STATELESS_FWHT_PARAMS,
1810 .elem_size = sizeof(struct v4l2_ctrl_fwht_params),
1811 };
1812
1813 /*
1814 * File operations
1815 */
vicodec_open(struct file * file)1816 static int vicodec_open(struct file *file)
1817 {
1818 const struct v4l2_fwht_pixfmt_info *info = v4l2_fwht_get_pixfmt(0);
1819 struct video_device *vfd = video_devdata(file);
1820 struct vicodec_dev *dev = video_drvdata(file);
1821 struct vicodec_ctx *ctx = NULL;
1822 struct v4l2_ctrl_handler *hdl;
1823 unsigned int raw_size;
1824 unsigned int comp_size;
1825 int rc = 0;
1826
1827 if (mutex_lock_interruptible(vfd->lock))
1828 return -ERESTARTSYS;
1829 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
1830 if (!ctx) {
1831 rc = -ENOMEM;
1832 goto open_unlock;
1833 }
1834
1835 if (vfd == &dev->stateful_enc.vfd)
1836 ctx->is_enc = true;
1837 else if (vfd == &dev->stateless_dec.vfd)
1838 ctx->is_stateless = true;
1839
1840 v4l2_fh_init(&ctx->fh, video_devdata(file));
1841 file->private_data = &ctx->fh;
1842 ctx->dev = dev;
1843 hdl = &ctx->hdl;
1844 v4l2_ctrl_handler_init(hdl, 5);
1845 v4l2_ctrl_new_std(hdl, &vicodec_ctrl_ops, V4L2_CID_MPEG_VIDEO_GOP_SIZE,
1846 1, 16, 1, 10);
1847 v4l2_ctrl_new_std(hdl, &vicodec_ctrl_ops, V4L2_CID_FWHT_I_FRAME_QP,
1848 1, 31, 1, 20);
1849 v4l2_ctrl_new_std(hdl, &vicodec_ctrl_ops, V4L2_CID_FWHT_P_FRAME_QP,
1850 1, 31, 1, 20);
1851 if (ctx->is_enc)
1852 v4l2_ctrl_new_std(hdl, &vicodec_ctrl_ops,
1853 V4L2_CID_MIN_BUFFERS_FOR_OUTPUT, 1, 1, 1, 1);
1854 if (ctx->is_stateless)
1855 v4l2_ctrl_new_custom(hdl, &vicodec_ctrl_stateless_state, NULL);
1856 if (hdl->error) {
1857 rc = hdl->error;
1858 v4l2_ctrl_handler_free(hdl);
1859 kfree(ctx);
1860 goto open_unlock;
1861 }
1862 ctx->fh.ctrl_handler = hdl;
1863 v4l2_ctrl_handler_setup(hdl);
1864
1865 if (ctx->is_enc)
1866 ctx->q_data[V4L2_M2M_SRC].info = info;
1867 else if (ctx->is_stateless)
1868 ctx->q_data[V4L2_M2M_SRC].info = &pixfmt_stateless_fwht;
1869 else
1870 ctx->q_data[V4L2_M2M_SRC].info = &pixfmt_fwht;
1871 ctx->q_data[V4L2_M2M_SRC].coded_width = 1280;
1872 ctx->q_data[V4L2_M2M_SRC].coded_height = 720;
1873 ctx->q_data[V4L2_M2M_SRC].visible_width = 1280;
1874 ctx->q_data[V4L2_M2M_SRC].visible_height = 720;
1875 raw_size = 1280 * 720 * info->sizeimage_mult / info->sizeimage_div;
1876 comp_size = 1280 * 720 * pixfmt_fwht.sizeimage_mult /
1877 pixfmt_fwht.sizeimage_div;
1878 if (ctx->is_enc)
1879 ctx->q_data[V4L2_M2M_SRC].sizeimage = raw_size;
1880 else if (ctx->is_stateless)
1881 ctx->q_data[V4L2_M2M_SRC].sizeimage = comp_size;
1882 else
1883 ctx->q_data[V4L2_M2M_SRC].sizeimage =
1884 comp_size + sizeof(struct fwht_cframe_hdr);
1885 ctx->q_data[V4L2_M2M_DST] = ctx->q_data[V4L2_M2M_SRC];
1886 if (ctx->is_enc) {
1887 ctx->q_data[V4L2_M2M_DST].info = &pixfmt_fwht;
1888 ctx->q_data[V4L2_M2M_DST].sizeimage =
1889 comp_size + sizeof(struct fwht_cframe_hdr);
1890 } else {
1891 ctx->q_data[V4L2_M2M_DST].info = info;
1892 ctx->q_data[V4L2_M2M_DST].sizeimage = raw_size;
1893 }
1894
1895 ctx->state.colorspace = V4L2_COLORSPACE_REC709;
1896
1897 if (ctx->is_enc) {
1898 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->stateful_enc.m2m_dev,
1899 ctx, &queue_init);
1900 ctx->lock = &dev->stateful_enc.lock;
1901 } else if (ctx->is_stateless) {
1902 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->stateless_dec.m2m_dev,
1903 ctx, &queue_init);
1904 ctx->lock = &dev->stateless_dec.lock;
1905 } else {
1906 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->stateful_dec.m2m_dev,
1907 ctx, &queue_init);
1908 ctx->lock = &dev->stateful_dec.lock;
1909 }
1910
1911 if (IS_ERR(ctx->fh.m2m_ctx)) {
1912 rc = PTR_ERR(ctx->fh.m2m_ctx);
1913
1914 v4l2_ctrl_handler_free(hdl);
1915 v4l2_fh_exit(&ctx->fh);
1916 kfree(ctx);
1917 goto open_unlock;
1918 }
1919
1920 v4l2_fh_add(&ctx->fh);
1921
1922 open_unlock:
1923 mutex_unlock(vfd->lock);
1924 return rc;
1925 }
1926
vicodec_release(struct file * file)1927 static int vicodec_release(struct file *file)
1928 {
1929 struct video_device *vfd = video_devdata(file);
1930 struct vicodec_ctx *ctx = file2ctx(file);
1931
1932 mutex_lock(vfd->lock);
1933 v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
1934 mutex_unlock(vfd->lock);
1935 v4l2_fh_del(&ctx->fh);
1936 v4l2_fh_exit(&ctx->fh);
1937 v4l2_ctrl_handler_free(&ctx->hdl);
1938 kvfree(ctx->state.compressed_frame);
1939 kfree(ctx);
1940
1941 return 0;
1942 }
1943
vicodec_request_validate(struct media_request * req)1944 static int vicodec_request_validate(struct media_request *req)
1945 {
1946 struct media_request_object *obj;
1947 struct v4l2_ctrl_handler *parent_hdl, *hdl;
1948 struct vicodec_ctx *ctx = NULL;
1949 struct v4l2_ctrl *ctrl;
1950 unsigned int count;
1951
1952 list_for_each_entry(obj, &req->objects, list) {
1953 struct vb2_buffer *vb;
1954
1955 if (vb2_request_object_is_buffer(obj)) {
1956 vb = container_of(obj, struct vb2_buffer, req_obj);
1957 ctx = vb2_get_drv_priv(vb->vb2_queue);
1958
1959 break;
1960 }
1961 }
1962
1963 if (!ctx) {
1964 pr_err("No buffer was provided with the request\n");
1965 return -ENOENT;
1966 }
1967
1968 count = vb2_request_buffer_cnt(req);
1969 if (!count) {
1970 v4l2_info(&ctx->dev->v4l2_dev,
1971 "No buffer was provided with the request\n");
1972 return -ENOENT;
1973 } else if (count > 1) {
1974 v4l2_info(&ctx->dev->v4l2_dev,
1975 "More than one buffer was provided with the request\n");
1976 return -EINVAL;
1977 }
1978
1979 parent_hdl = &ctx->hdl;
1980
1981 hdl = v4l2_ctrl_request_hdl_find(req, parent_hdl);
1982 if (!hdl) {
1983 v4l2_info(&ctx->dev->v4l2_dev, "Missing codec control\n");
1984 return -ENOENT;
1985 }
1986 ctrl = v4l2_ctrl_request_hdl_ctrl_find(hdl,
1987 vicodec_ctrl_stateless_state.id);
1988 v4l2_ctrl_request_hdl_put(hdl);
1989 if (!ctrl) {
1990 v4l2_info(&ctx->dev->v4l2_dev,
1991 "Missing required codec control\n");
1992 return -ENOENT;
1993 }
1994
1995 return vb2_request_validate(req);
1996 }
1997
1998 static const struct v4l2_file_operations vicodec_fops = {
1999 .owner = THIS_MODULE,
2000 .open = vicodec_open,
2001 .release = vicodec_release,
2002 .poll = v4l2_m2m_fop_poll,
2003 .unlocked_ioctl = video_ioctl2,
2004 .mmap = v4l2_m2m_fop_mmap,
2005 };
2006
2007 static const struct video_device vicodec_videodev = {
2008 .name = VICODEC_NAME,
2009 .vfl_dir = VFL_DIR_M2M,
2010 .fops = &vicodec_fops,
2011 .ioctl_ops = &vicodec_ioctl_ops,
2012 .minor = -1,
2013 .release = video_device_release_empty,
2014 };
2015
2016 static const struct media_device_ops vicodec_m2m_media_ops = {
2017 .req_validate = vicodec_request_validate,
2018 .req_queue = v4l2_m2m_request_queue,
2019 };
2020
2021 static const struct v4l2_m2m_ops m2m_ops = {
2022 .device_run = device_run,
2023 .job_ready = job_ready,
2024 };
2025
register_instance(struct vicodec_dev * dev,struct vicodec_dev_instance * dev_instance,const char * name,bool is_enc)2026 static int register_instance(struct vicodec_dev *dev,
2027 struct vicodec_dev_instance *dev_instance,
2028 const char *name, bool is_enc)
2029 {
2030 struct video_device *vfd;
2031 int ret;
2032
2033 spin_lock_init(&dev_instance->lock);
2034 mutex_init(&dev_instance->mutex);
2035 dev_instance->m2m_dev = v4l2_m2m_init(&m2m_ops);
2036 if (IS_ERR(dev_instance->m2m_dev)) {
2037 v4l2_err(&dev->v4l2_dev, "Failed to init vicodec enc device\n");
2038 return PTR_ERR(dev_instance->m2m_dev);
2039 }
2040
2041 dev_instance->vfd = vicodec_videodev;
2042 vfd = &dev_instance->vfd;
2043 vfd->lock = &dev_instance->mutex;
2044 vfd->v4l2_dev = &dev->v4l2_dev;
2045 strscpy(vfd->name, name, sizeof(vfd->name));
2046 vfd->device_caps = V4L2_CAP_STREAMING |
2047 (multiplanar ? V4L2_CAP_VIDEO_M2M_MPLANE : V4L2_CAP_VIDEO_M2M);
2048 if (is_enc) {
2049 v4l2_disable_ioctl(vfd, VIDIOC_DECODER_CMD);
2050 v4l2_disable_ioctl(vfd, VIDIOC_TRY_DECODER_CMD);
2051 } else {
2052 v4l2_disable_ioctl(vfd, VIDIOC_ENCODER_CMD);
2053 v4l2_disable_ioctl(vfd, VIDIOC_TRY_ENCODER_CMD);
2054 }
2055 video_set_drvdata(vfd, dev);
2056
2057 ret = video_register_device(vfd, VFL_TYPE_VIDEO, 0);
2058 if (ret) {
2059 v4l2_err(&dev->v4l2_dev, "Failed to register video device '%s'\n", name);
2060 v4l2_m2m_release(dev_instance->m2m_dev);
2061 return ret;
2062 }
2063 v4l2_info(&dev->v4l2_dev, "Device '%s' registered as /dev/video%d\n",
2064 name, vfd->num);
2065 return 0;
2066 }
2067
vicodec_v4l2_dev_release(struct v4l2_device * v4l2_dev)2068 static void vicodec_v4l2_dev_release(struct v4l2_device *v4l2_dev)
2069 {
2070 struct vicodec_dev *dev = container_of(v4l2_dev, struct vicodec_dev, v4l2_dev);
2071
2072 v4l2_device_unregister(&dev->v4l2_dev);
2073 v4l2_m2m_release(dev->stateful_enc.m2m_dev);
2074 v4l2_m2m_release(dev->stateful_dec.m2m_dev);
2075 v4l2_m2m_release(dev->stateless_dec.m2m_dev);
2076 #ifdef CONFIG_MEDIA_CONTROLLER
2077 media_device_cleanup(&dev->mdev);
2078 #endif
2079 kfree(dev);
2080 }
2081
vicodec_probe(struct platform_device * pdev)2082 static int vicodec_probe(struct platform_device *pdev)
2083 {
2084 struct vicodec_dev *dev;
2085 int ret;
2086
2087 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
2088 if (!dev)
2089 return -ENOMEM;
2090
2091 ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
2092 if (ret)
2093 goto free_dev;
2094
2095 dev->v4l2_dev.release = vicodec_v4l2_dev_release;
2096
2097 #ifdef CONFIG_MEDIA_CONTROLLER
2098 dev->mdev.dev = &pdev->dev;
2099 strscpy(dev->mdev.model, "vicodec", sizeof(dev->mdev.model));
2100 strscpy(dev->mdev.bus_info, "platform:vicodec",
2101 sizeof(dev->mdev.bus_info));
2102 media_device_init(&dev->mdev);
2103 dev->mdev.ops = &vicodec_m2m_media_ops;
2104 dev->v4l2_dev.mdev = &dev->mdev;
2105 #endif
2106
2107 platform_set_drvdata(pdev, dev);
2108
2109 ret = register_instance(dev, &dev->stateful_enc, "stateful-encoder",
2110 true);
2111 if (ret)
2112 goto unreg_dev;
2113
2114 ret = register_instance(dev, &dev->stateful_dec, "stateful-decoder",
2115 false);
2116 if (ret)
2117 goto unreg_sf_enc;
2118
2119 ret = register_instance(dev, &dev->stateless_dec, "stateless-decoder",
2120 false);
2121 if (ret)
2122 goto unreg_sf_dec;
2123
2124 #ifdef CONFIG_MEDIA_CONTROLLER
2125 ret = v4l2_m2m_register_media_controller(dev->stateful_enc.m2m_dev,
2126 &dev->stateful_enc.vfd,
2127 MEDIA_ENT_F_PROC_VIDEO_ENCODER);
2128 if (ret) {
2129 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem media controller for enc\n");
2130 goto unreg_m2m;
2131 }
2132
2133 ret = v4l2_m2m_register_media_controller(dev->stateful_dec.m2m_dev,
2134 &dev->stateful_dec.vfd,
2135 MEDIA_ENT_F_PROC_VIDEO_DECODER);
2136 if (ret) {
2137 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem media controller for dec\n");
2138 goto unreg_m2m_sf_enc_mc;
2139 }
2140
2141 ret = v4l2_m2m_register_media_controller(dev->stateless_dec.m2m_dev,
2142 &dev->stateless_dec.vfd,
2143 MEDIA_ENT_F_PROC_VIDEO_DECODER);
2144 if (ret) {
2145 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem media controller for stateless dec\n");
2146 goto unreg_m2m_sf_dec_mc;
2147 }
2148
2149 ret = media_device_register(&dev->mdev);
2150 if (ret) {
2151 v4l2_err(&dev->v4l2_dev, "Failed to register mem2mem media device\n");
2152 goto unreg_m2m_sl_dec_mc;
2153 }
2154 #endif
2155 return 0;
2156
2157 #ifdef CONFIG_MEDIA_CONTROLLER
2158 unreg_m2m_sl_dec_mc:
2159 v4l2_m2m_unregister_media_controller(dev->stateless_dec.m2m_dev);
2160 unreg_m2m_sf_dec_mc:
2161 v4l2_m2m_unregister_media_controller(dev->stateful_dec.m2m_dev);
2162 unreg_m2m_sf_enc_mc:
2163 v4l2_m2m_unregister_media_controller(dev->stateful_enc.m2m_dev);
2164 unreg_m2m:
2165 video_unregister_device(&dev->stateless_dec.vfd);
2166 v4l2_m2m_release(dev->stateless_dec.m2m_dev);
2167 #endif
2168 unreg_sf_dec:
2169 video_unregister_device(&dev->stateful_dec.vfd);
2170 v4l2_m2m_release(dev->stateful_dec.m2m_dev);
2171 unreg_sf_enc:
2172 video_unregister_device(&dev->stateful_enc.vfd);
2173 v4l2_m2m_release(dev->stateful_enc.m2m_dev);
2174 unreg_dev:
2175 v4l2_device_unregister(&dev->v4l2_dev);
2176 free_dev:
2177 kfree(dev);
2178
2179 return ret;
2180 }
2181
vicodec_remove(struct platform_device * pdev)2182 static void vicodec_remove(struct platform_device *pdev)
2183 {
2184 struct vicodec_dev *dev = platform_get_drvdata(pdev);
2185
2186 v4l2_info(&dev->v4l2_dev, "Removing " VICODEC_NAME);
2187
2188 #ifdef CONFIG_MEDIA_CONTROLLER
2189 media_device_unregister(&dev->mdev);
2190 v4l2_m2m_unregister_media_controller(dev->stateful_enc.m2m_dev);
2191 v4l2_m2m_unregister_media_controller(dev->stateful_dec.m2m_dev);
2192 v4l2_m2m_unregister_media_controller(dev->stateless_dec.m2m_dev);
2193 #endif
2194
2195 video_unregister_device(&dev->stateful_enc.vfd);
2196 video_unregister_device(&dev->stateful_dec.vfd);
2197 video_unregister_device(&dev->stateless_dec.vfd);
2198 v4l2_device_put(&dev->v4l2_dev);
2199 }
2200
2201 static struct platform_driver vicodec_pdrv = {
2202 .probe = vicodec_probe,
2203 .remove_new = vicodec_remove,
2204 .driver = {
2205 .name = VICODEC_NAME,
2206 },
2207 };
2208
vicodec_exit(void)2209 static void __exit vicodec_exit(void)
2210 {
2211 platform_driver_unregister(&vicodec_pdrv);
2212 platform_device_unregister(&vicodec_pdev);
2213 }
2214
vicodec_init(void)2215 static int __init vicodec_init(void)
2216 {
2217 int ret;
2218
2219 ret = platform_device_register(&vicodec_pdev);
2220 if (ret)
2221 return ret;
2222
2223 ret = platform_driver_register(&vicodec_pdrv);
2224 if (ret)
2225 platform_device_unregister(&vicodec_pdev);
2226
2227 return ret;
2228 }
2229
2230 module_init(vicodec_init);
2231 module_exit(vicodec_exit);
2232