1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * vimc-debayer.c Virtual Media Controller Driver
4 *
5 * Copyright (C) 2015-2017 Helen Koike <helen.fornazier@gmail.com>
6 */
7
8#include <linux/moduleparam.h>
9#include <linux/platform_device.h>
10#include <linux/vmalloc.h>
11#include <linux/v4l2-mediabus.h>
12#include <media/v4l2-ctrls.h>
13#include <media/v4l2-event.h>
14#include <media/v4l2-subdev.h>
15
16#include "vimc-common.h"
17
18enum vimc_debayer_rgb_colors {
19 VIMC_DEBAYER_RED = 0,
20 VIMC_DEBAYER_GREEN = 1,
21 VIMC_DEBAYER_BLUE = 2,
22};
23
24struct vimc_debayer_pix_map {
25 u32 code;
26 enum vimc_debayer_rgb_colors order[2][2];
27};
28
29struct vimc_debayer_device {
30 struct vimc_ent_device ved;
31 struct v4l2_subdev sd;
32 /* The active format */
33 struct v4l2_mbus_framefmt sink_fmt;
34 u32 src_code;
35 void (*set_rgb_src)(struct vimc_debayer_device *vdebayer,
36 unsigned int lin, unsigned int col,
37 unsigned int rgb[3]);
38 /* Values calculated when the stream starts */
39 u8 *src_frame;
40 const struct vimc_debayer_pix_map *sink_pix_map;
41 unsigned int sink_bpp;
42 unsigned int mean_win_size;
43 struct v4l2_ctrl_handler hdl;
44 struct media_pad pads[2];
45};
46
47static const struct v4l2_mbus_framefmt sink_fmt_default = {
48 .width = 640,
49 .height = 480,
50 .code = MEDIA_BUS_FMT_SRGGB8_1X8,
51 .field = V4L2_FIELD_NONE,
52 .colorspace = V4L2_COLORSPACE_SRGB,
53};
54
55static const u32 vimc_debayer_src_mbus_codes[] = {
56 MEDIA_BUS_FMT_GBR888_1X24,
57 MEDIA_BUS_FMT_BGR888_1X24,
58 MEDIA_BUS_FMT_BGR888_3X8,
59 MEDIA_BUS_FMT_RGB888_1X24,
60 MEDIA_BUS_FMT_RGB888_2X12_BE,
61 MEDIA_BUS_FMT_RGB888_2X12_LE,
62 MEDIA_BUS_FMT_RGB888_3X8,
63 MEDIA_BUS_FMT_RGB888_1X7X4_SPWG,
64 MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA,
65 MEDIA_BUS_FMT_RGB888_1X32_PADHI,
66};
67
68static const struct vimc_debayer_pix_map vimc_debayer_pix_map_list[] = {
69 {
70 .code = MEDIA_BUS_FMT_SBGGR8_1X8,
71 .order = { { VIMC_DEBAYER_BLUE, VIMC_DEBAYER_GREEN },
72 { VIMC_DEBAYER_GREEN, VIMC_DEBAYER_RED } }
73 },
74 {
75 .code = MEDIA_BUS_FMT_SGBRG8_1X8,
76 .order = { { VIMC_DEBAYER_GREEN, VIMC_DEBAYER_BLUE },
77 { VIMC_DEBAYER_RED, VIMC_DEBAYER_GREEN } }
78 },
79 {
80 .code = MEDIA_BUS_FMT_SGRBG8_1X8,
81 .order = { { VIMC_DEBAYER_GREEN, VIMC_DEBAYER_RED },
82 { VIMC_DEBAYER_BLUE, VIMC_DEBAYER_GREEN } }
83 },
84 {
85 .code = MEDIA_BUS_FMT_SRGGB8_1X8,
86 .order = { { VIMC_DEBAYER_RED, VIMC_DEBAYER_GREEN },
87 { VIMC_DEBAYER_GREEN, VIMC_DEBAYER_BLUE } }
88 },
89 {
90 .code = MEDIA_BUS_FMT_SBGGR10_1X10,
91 .order = { { VIMC_DEBAYER_BLUE, VIMC_DEBAYER_GREEN },
92 { VIMC_DEBAYER_GREEN, VIMC_DEBAYER_RED } }
93 },
94 {
95 .code = MEDIA_BUS_FMT_SGBRG10_1X10,
96 .order = { { VIMC_DEBAYER_GREEN, VIMC_DEBAYER_BLUE },
97 { VIMC_DEBAYER_RED, VIMC_DEBAYER_GREEN } }
98 },
99 {
100 .code = MEDIA_BUS_FMT_SGRBG10_1X10,
101 .order = { { VIMC_DEBAYER_GREEN, VIMC_DEBAYER_RED },
102 { VIMC_DEBAYER_BLUE, VIMC_DEBAYER_GREEN } }
103 },
104 {
105 .code = MEDIA_BUS_FMT_SRGGB10_1X10,
106 .order = { { VIMC_DEBAYER_RED, VIMC_DEBAYER_GREEN },
107 { VIMC_DEBAYER_GREEN, VIMC_DEBAYER_BLUE } }
108 },
109 {
110 .code = MEDIA_BUS_FMT_SBGGR12_1X12,
111 .order = { { VIMC_DEBAYER_BLUE, VIMC_DEBAYER_GREEN },
112 { VIMC_DEBAYER_GREEN, VIMC_DEBAYER_RED } }
113 },
114 {
115 .code = MEDIA_BUS_FMT_SGBRG12_1X12,
116 .order = { { VIMC_DEBAYER_GREEN, VIMC_DEBAYER_BLUE },
117 { VIMC_DEBAYER_RED, VIMC_DEBAYER_GREEN } }
118 },
119 {
120 .code = MEDIA_BUS_FMT_SGRBG12_1X12,
121 .order = { { VIMC_DEBAYER_GREEN, VIMC_DEBAYER_RED },
122 { VIMC_DEBAYER_BLUE, VIMC_DEBAYER_GREEN } }
123 },
124 {
125 .code = MEDIA_BUS_FMT_SRGGB12_1X12,
126 .order = { { VIMC_DEBAYER_RED, VIMC_DEBAYER_GREEN },
127 { VIMC_DEBAYER_GREEN, VIMC_DEBAYER_BLUE } }
128 },
129};
130
131static const struct vimc_debayer_pix_map *vimc_debayer_pix_map_by_code(u32 code)
132{
133 unsigned int i;
134
135 for (i = 0; i < ARRAY_SIZE(vimc_debayer_pix_map_list); i++)
136 if (vimc_debayer_pix_map_list[i].code == code)
137 return &vimc_debayer_pix_map_list[i];
138
139 return NULL;
140}
141
142static bool vimc_debayer_src_code_is_valid(u32 code)
143{
144 unsigned int i;
145
146 for (i = 0; i < ARRAY_SIZE(vimc_debayer_src_mbus_codes); i++)
147 if (vimc_debayer_src_mbus_codes[i] == code)
148 return true;
149
150 return false;
151}
152
153static int vimc_debayer_init_state(struct v4l2_subdev *sd,
154 struct v4l2_subdev_state *sd_state)
155{
156 struct vimc_debayer_device *vdebayer = v4l2_get_subdevdata(sd);
157 struct v4l2_mbus_framefmt *mf;
158 unsigned int i;
159
160 mf = v4l2_subdev_state_get_format(sd_state, 0);
161 *mf = sink_fmt_default;
162
163 for (i = 1; i < sd->entity.num_pads; i++) {
164 mf = v4l2_subdev_state_get_format(sd_state, i);
165 *mf = sink_fmt_default;
166 mf->code = vdebayer->src_code;
167 }
168
169 return 0;
170}
171
172static int vimc_debayer_enum_mbus_code(struct v4l2_subdev *sd,
173 struct v4l2_subdev_state *sd_state,
174 struct v4l2_subdev_mbus_code_enum *code)
175{
176 if (VIMC_IS_SRC(code->pad)) {
177 if (code->index >= ARRAY_SIZE(vimc_debayer_src_mbus_codes))
178 return -EINVAL;
179
180 code->code = vimc_debayer_src_mbus_codes[code->index];
181 } else {
182 if (code->index >= ARRAY_SIZE(vimc_debayer_pix_map_list))
183 return -EINVAL;
184
185 code->code = vimc_debayer_pix_map_list[code->index].code;
186 }
187
188 return 0;
189}
190
191static int vimc_debayer_enum_frame_size(struct v4l2_subdev *sd,
192 struct v4l2_subdev_state *sd_state,
193 struct v4l2_subdev_frame_size_enum *fse)
194{
195 if (fse->index)
196 return -EINVAL;
197
198 if (VIMC_IS_SINK(fse->pad)) {
199 const struct vimc_debayer_pix_map *vpix =
200 vimc_debayer_pix_map_by_code(code: fse->code);
201
202 if (!vpix)
203 return -EINVAL;
204 } else if (!vimc_debayer_src_code_is_valid(code: fse->code)) {
205 return -EINVAL;
206 }
207
208 fse->min_width = VIMC_FRAME_MIN_WIDTH;
209 fse->max_width = VIMC_FRAME_MAX_WIDTH;
210 fse->min_height = VIMC_FRAME_MIN_HEIGHT;
211 fse->max_height = VIMC_FRAME_MAX_HEIGHT;
212
213 return 0;
214}
215
216static int vimc_debayer_get_fmt(struct v4l2_subdev *sd,
217 struct v4l2_subdev_state *sd_state,
218 struct v4l2_subdev_format *fmt)
219{
220 struct vimc_debayer_device *vdebayer = v4l2_get_subdevdata(sd);
221
222 /* Get the current sink format */
223 fmt->format = fmt->which == V4L2_SUBDEV_FORMAT_TRY ?
224 *v4l2_subdev_state_get_format(sd_state, 0) :
225 vdebayer->sink_fmt;
226
227 /* Set the right code for the source pad */
228 if (VIMC_IS_SRC(fmt->pad))
229 fmt->format.code = vdebayer->src_code;
230
231 return 0;
232}
233
234static void vimc_debayer_adjust_sink_fmt(struct v4l2_mbus_framefmt *fmt)
235{
236 const struct vimc_debayer_pix_map *vpix;
237
238 /* Don't accept a code that is not on the debayer table */
239 vpix = vimc_debayer_pix_map_by_code(code: fmt->code);
240 if (!vpix)
241 fmt->code = sink_fmt_default.code;
242
243 fmt->width = clamp_t(u32, fmt->width, VIMC_FRAME_MIN_WIDTH,
244 VIMC_FRAME_MAX_WIDTH) & ~1;
245 fmt->height = clamp_t(u32, fmt->height, VIMC_FRAME_MIN_HEIGHT,
246 VIMC_FRAME_MAX_HEIGHT) & ~1;
247
248 if (fmt->field == V4L2_FIELD_ANY)
249 fmt->field = sink_fmt_default.field;
250
251 vimc_colorimetry_clamp(fmt);
252}
253
254static int vimc_debayer_set_fmt(struct v4l2_subdev *sd,
255 struct v4l2_subdev_state *sd_state,
256 struct v4l2_subdev_format *fmt)
257{
258 struct vimc_debayer_device *vdebayer = v4l2_get_subdevdata(sd);
259 struct v4l2_mbus_framefmt *sink_fmt;
260 u32 *src_code;
261
262 if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
263 /* Do not change the format while stream is on */
264 if (vdebayer->src_frame)
265 return -EBUSY;
266
267 sink_fmt = &vdebayer->sink_fmt;
268 src_code = &vdebayer->src_code;
269 } else {
270 sink_fmt = v4l2_subdev_state_get_format(sd_state, 0);
271 src_code = &v4l2_subdev_state_get_format(sd_state, 1)->code;
272 }
273
274 /*
275 * Do not change the format of the source pad,
276 * it is propagated from the sink
277 */
278 if (VIMC_IS_SRC(fmt->pad)) {
279 u32 code = fmt->format.code;
280
281 fmt->format = *sink_fmt;
282
283 if (vimc_debayer_src_code_is_valid(code))
284 *src_code = code;
285
286 fmt->format.code = *src_code;
287 } else {
288 /* Set the new format in the sink pad */
289 vimc_debayer_adjust_sink_fmt(fmt: &fmt->format);
290
291 dev_dbg(vdebayer->ved.dev, "%s: sink format update: "
292 "old:%dx%d (0x%x, %d, %d, %d, %d) "
293 "new:%dx%d (0x%x, %d, %d, %d, %d)\n", vdebayer->sd.name,
294 /* old */
295 sink_fmt->width, sink_fmt->height, sink_fmt->code,
296 sink_fmt->colorspace, sink_fmt->quantization,
297 sink_fmt->xfer_func, sink_fmt->ycbcr_enc,
298 /* new */
299 fmt->format.width, fmt->format.height, fmt->format.code,
300 fmt->format.colorspace, fmt->format.quantization,
301 fmt->format.xfer_func, fmt->format.ycbcr_enc);
302
303 *sink_fmt = fmt->format;
304 }
305
306 return 0;
307}
308
309static const struct v4l2_subdev_pad_ops vimc_debayer_pad_ops = {
310 .enum_mbus_code = vimc_debayer_enum_mbus_code,
311 .enum_frame_size = vimc_debayer_enum_frame_size,
312 .get_fmt = vimc_debayer_get_fmt,
313 .set_fmt = vimc_debayer_set_fmt,
314};
315
316static void vimc_debayer_process_rgb_frame(struct vimc_debayer_device *vdebayer,
317 unsigned int lin,
318 unsigned int col,
319 unsigned int rgb[3])
320{
321 const struct vimc_pix_map *vpix;
322 unsigned int i, index;
323
324 vpix = vimc_pix_map_by_code(code: vdebayer->src_code);
325 index = VIMC_FRAME_INDEX(lin, col, vdebayer->sink_fmt.width, 3);
326 for (i = 0; i < 3; i++) {
327 switch (vpix->pixelformat) {
328 case V4L2_PIX_FMT_RGB24:
329 vdebayer->src_frame[index + i] = rgb[i];
330 break;
331 case V4L2_PIX_FMT_BGR24:
332 vdebayer->src_frame[index + i] = rgb[2 - i];
333 break;
334 }
335 }
336}
337
338static int vimc_debayer_s_stream(struct v4l2_subdev *sd, int enable)
339{
340 struct vimc_debayer_device *vdebayer = v4l2_get_subdevdata(sd);
341
342 if (enable) {
343 const struct vimc_pix_map *vpix;
344 unsigned int frame_size;
345
346 if (vdebayer->src_frame)
347 return 0;
348
349 /* Calculate the frame size of the source pad */
350 vpix = vimc_pix_map_by_code(code: vdebayer->src_code);
351 frame_size = vdebayer->sink_fmt.width * vdebayer->sink_fmt.height *
352 vpix->bpp;
353
354 /* Save the bytes per pixel of the sink */
355 vpix = vimc_pix_map_by_code(code: vdebayer->sink_fmt.code);
356 vdebayer->sink_bpp = vpix->bpp;
357
358 /* Get the corresponding pixel map from the table */
359 vdebayer->sink_pix_map =
360 vimc_debayer_pix_map_by_code(code: vdebayer->sink_fmt.code);
361
362 /*
363 * Allocate the frame buffer. Use vmalloc to be able to
364 * allocate a large amount of memory
365 */
366 vdebayer->src_frame = vmalloc(size: frame_size);
367 if (!vdebayer->src_frame)
368 return -ENOMEM;
369
370 } else {
371 if (!vdebayer->src_frame)
372 return 0;
373
374 vfree(addr: vdebayer->src_frame);
375 vdebayer->src_frame = NULL;
376 }
377
378 return 0;
379}
380
381static const struct v4l2_subdev_core_ops vimc_debayer_core_ops = {
382 .log_status = v4l2_ctrl_subdev_log_status,
383 .subscribe_event = v4l2_ctrl_subdev_subscribe_event,
384 .unsubscribe_event = v4l2_event_subdev_unsubscribe,
385};
386
387static const struct v4l2_subdev_video_ops vimc_debayer_video_ops = {
388 .s_stream = vimc_debayer_s_stream,
389};
390
391static const struct v4l2_subdev_ops vimc_debayer_ops = {
392 .core = &vimc_debayer_core_ops,
393 .pad = &vimc_debayer_pad_ops,
394 .video = &vimc_debayer_video_ops,
395};
396
397static const struct v4l2_subdev_internal_ops vimc_debayer_internal_ops = {
398 .init_state = vimc_debayer_init_state,
399};
400
401static unsigned int vimc_debayer_get_val(const u8 *bytes,
402 const unsigned int n_bytes)
403{
404 unsigned int i;
405 unsigned int acc = 0;
406
407 for (i = 0; i < n_bytes; i++)
408 acc = acc + (bytes[i] << (8 * i));
409
410 return acc;
411}
412
413static void vimc_debayer_calc_rgb_sink(struct vimc_debayer_device *vdebayer,
414 const u8 *frame,
415 const unsigned int lin,
416 const unsigned int col,
417 unsigned int rgb[3])
418{
419 unsigned int i, seek, wlin, wcol;
420 unsigned int n_rgb[3] = {0, 0, 0};
421
422 for (i = 0; i < 3; i++)
423 rgb[i] = 0;
424
425 /*
426 * Calculate how many we need to subtract to get to the pixel in
427 * the top left corner of the mean window (considering the current
428 * pixel as the center)
429 */
430 seek = vdebayer->mean_win_size / 2;
431
432 /* Sum the values of the colors in the mean window */
433
434 dev_dbg(vdebayer->ved.dev,
435 "deb: %s: --- Calc pixel %dx%d, window mean %d, seek %d ---\n",
436 vdebayer->sd.name, lin, col, vdebayer->sink_fmt.height, seek);
437
438 /*
439 * Iterate through all the lines in the mean window, start
440 * with zero if the pixel is outside the frame and don't pass
441 * the height when the pixel is in the bottom border of the
442 * frame
443 */
444 for (wlin = seek > lin ? 0 : lin - seek;
445 wlin < lin + seek + 1 && wlin < vdebayer->sink_fmt.height;
446 wlin++) {
447
448 /*
449 * Iterate through all the columns in the mean window, start
450 * with zero if the pixel is outside the frame and don't pass
451 * the width when the pixel is in the right border of the
452 * frame
453 */
454 for (wcol = seek > col ? 0 : col - seek;
455 wcol < col + seek + 1 && wcol < vdebayer->sink_fmt.width;
456 wcol++) {
457 enum vimc_debayer_rgb_colors color;
458 unsigned int index;
459
460 /* Check which color this pixel is */
461 color = vdebayer->sink_pix_map->order[wlin % 2][wcol % 2];
462
463 index = VIMC_FRAME_INDEX(wlin, wcol,
464 vdebayer->sink_fmt.width,
465 vdebayer->sink_bpp);
466
467 dev_dbg(vdebayer->ved.dev,
468 "deb: %s: RGB CALC: frame index %d, win pos %dx%d, color %d\n",
469 vdebayer->sd.name, index, wlin, wcol, color);
470
471 /* Get its value */
472 rgb[color] = rgb[color] +
473 vimc_debayer_get_val(bytes: &frame[index],
474 n_bytes: vdebayer->sink_bpp);
475
476 /* Save how many values we already added */
477 n_rgb[color]++;
478
479 dev_dbg(vdebayer->ved.dev, "deb: %s: RGB CALC: val %d, n %d\n",
480 vdebayer->sd.name, rgb[color], n_rgb[color]);
481 }
482 }
483
484 /* Calculate the mean */
485 for (i = 0; i < 3; i++) {
486 dev_dbg(vdebayer->ved.dev,
487 "deb: %s: PRE CALC: %dx%d Color %d, val %d, n %d\n",
488 vdebayer->sd.name, lin, col, i, rgb[i], n_rgb[i]);
489
490 if (n_rgb[i])
491 rgb[i] = rgb[i] / n_rgb[i];
492
493 dev_dbg(vdebayer->ved.dev,
494 "deb: %s: FINAL CALC: %dx%d Color %d, val %d\n",
495 vdebayer->sd.name, lin, col, i, rgb[i]);
496 }
497}
498
499static void *vimc_debayer_process_frame(struct vimc_ent_device *ved,
500 const void *sink_frame)
501{
502 struct vimc_debayer_device *vdebayer =
503 container_of(ved, struct vimc_debayer_device, ved);
504
505 unsigned int rgb[3];
506 unsigned int i, j;
507
508 /* If the stream in this node is not active, just return */
509 if (!vdebayer->src_frame)
510 return ERR_PTR(error: -EINVAL);
511
512 for (i = 0; i < vdebayer->sink_fmt.height; i++)
513 for (j = 0; j < vdebayer->sink_fmt.width; j++) {
514 vimc_debayer_calc_rgb_sink(vdebayer, frame: sink_frame, lin: i, col: j, rgb);
515 vdebayer->set_rgb_src(vdebayer, i, j, rgb);
516 }
517
518 return vdebayer->src_frame;
519}
520
521static int vimc_debayer_s_ctrl(struct v4l2_ctrl *ctrl)
522{
523 struct vimc_debayer_device *vdebayer =
524 container_of(ctrl->handler, struct vimc_debayer_device, hdl);
525
526 switch (ctrl->id) {
527 case VIMC_CID_MEAN_WIN_SIZE:
528 vdebayer->mean_win_size = ctrl->val;
529 break;
530 default:
531 return -EINVAL;
532 }
533 return 0;
534}
535
536static const struct v4l2_ctrl_ops vimc_debayer_ctrl_ops = {
537 .s_ctrl = vimc_debayer_s_ctrl,
538};
539
540static void vimc_debayer_release(struct vimc_ent_device *ved)
541{
542 struct vimc_debayer_device *vdebayer =
543 container_of(ved, struct vimc_debayer_device, ved);
544
545 v4l2_ctrl_handler_free(hdl: &vdebayer->hdl);
546 media_entity_cleanup(entity: vdebayer->ved.ent);
547 kfree(objp: vdebayer);
548}
549
550static const struct v4l2_ctrl_config vimc_debayer_ctrl_class = {
551 .flags = V4L2_CTRL_FLAG_READ_ONLY | V4L2_CTRL_FLAG_WRITE_ONLY,
552 .id = VIMC_CID_VIMC_CLASS,
553 .name = "VIMC Controls",
554 .type = V4L2_CTRL_TYPE_CTRL_CLASS,
555};
556
557static const struct v4l2_ctrl_config vimc_debayer_ctrl_mean_win_size = {
558 .ops = &vimc_debayer_ctrl_ops,
559 .id = VIMC_CID_MEAN_WIN_SIZE,
560 .name = "Debayer Mean Window Size",
561 .type = V4L2_CTRL_TYPE_INTEGER,
562 .min = 1,
563 .max = 25,
564 .step = 2,
565 .def = 3,
566};
567
568static struct vimc_ent_device *vimc_debayer_add(struct vimc_device *vimc,
569 const char *vcfg_name)
570{
571 struct v4l2_device *v4l2_dev = &vimc->v4l2_dev;
572 struct vimc_debayer_device *vdebayer;
573 int ret;
574
575 /* Allocate the vdebayer struct */
576 vdebayer = kzalloc(size: sizeof(*vdebayer), GFP_KERNEL);
577 if (!vdebayer)
578 return ERR_PTR(error: -ENOMEM);
579
580 /* Create controls: */
581 v4l2_ctrl_handler_init(&vdebayer->hdl, 2);
582 v4l2_ctrl_new_custom(hdl: &vdebayer->hdl, cfg: &vimc_debayer_ctrl_class, NULL);
583 v4l2_ctrl_new_custom(hdl: &vdebayer->hdl, cfg: &vimc_debayer_ctrl_mean_win_size, NULL);
584 vdebayer->sd.ctrl_handler = &vdebayer->hdl;
585 if (vdebayer->hdl.error) {
586 ret = vdebayer->hdl.error;
587 goto err_free_vdebayer;
588 }
589
590 /* Initialize ved and sd */
591 vdebayer->pads[0].flags = MEDIA_PAD_FL_SINK;
592 vdebayer->pads[1].flags = MEDIA_PAD_FL_SOURCE;
593
594 ret = vimc_ent_sd_register(ved: &vdebayer->ved, sd: &vdebayer->sd, v4l2_dev,
595 name: vcfg_name,
596 MEDIA_ENT_F_PROC_VIDEO_PIXEL_ENC_CONV, num_pads: 2,
597 pads: vdebayer->pads, sd_ops: &vimc_debayer_ops);
598 if (ret)
599 goto err_free_hdl;
600
601 vdebayer->sd.internal_ops = &vimc_debayer_internal_ops;
602
603 vdebayer->ved.process_frame = vimc_debayer_process_frame;
604 vdebayer->ved.dev = vimc->mdev.dev;
605 vdebayer->mean_win_size = vimc_debayer_ctrl_mean_win_size.def;
606
607 /* Initialize the frame format */
608 vdebayer->sink_fmt = sink_fmt_default;
609 /*
610 * TODO: Add support for more output formats, we only support
611 * RGB888 for now
612 * NOTE: the src format is always the same as the sink, except
613 * for the code
614 */
615 vdebayer->src_code = MEDIA_BUS_FMT_RGB888_1X24;
616 vdebayer->set_rgb_src = vimc_debayer_process_rgb_frame;
617
618 return &vdebayer->ved;
619
620err_free_hdl:
621 v4l2_ctrl_handler_free(hdl: &vdebayer->hdl);
622err_free_vdebayer:
623 kfree(objp: vdebayer);
624
625 return ERR_PTR(error: ret);
626}
627
628struct vimc_ent_type vimc_debayer_type = {
629 .add = vimc_debayer_add,
630 .release = vimc_debayer_release
631};
632

source code of linux/drivers/media/test-drivers/vimc/vimc-debayer.c