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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_deb_rgb_colors {
19 VIMC_DEB_RED = 0,
20 VIMC_DEB_GREEN = 1,
21 VIMC_DEB_BLUE = 2,
22};
23
24struct vimc_deb_pix_map {
25 u32 code;
26 enum vimc_deb_rgb_colors order[2][2];
27};
28
29struct vimc_deb_device {
30 struct vimc_ent_device ved;
31 struct v4l2_subdev sd;
32
33 struct v4l2_mbus_framefmt sink_fmt;
34 u32 src_code;
35 void (*set_rgb_src)(struct vimc_deb_device *vdeb, unsigned int lin,
36 unsigned int col, unsigned int rgb[3]);
37
38 u8 *src_frame;
39 const struct vimc_deb_pix_map *sink_pix_map;
40 unsigned int sink_bpp;
41 unsigned int mean_win_size;
42 struct v4l2_ctrl_handler hdl;
43 struct media_pad pads[2];
44};
45
46static const struct v4l2_mbus_framefmt sink_fmt_default = {
47 .width = 640,
48 .height = 480,
49 .code = MEDIA_BUS_FMT_SRGGB8_1X8,
50 .field = V4L2_FIELD_NONE,
51 .colorspace = V4L2_COLORSPACE_SRGB,
52};
53
54static const u32 vimc_deb_src_mbus_codes[] = {
55 MEDIA_BUS_FMT_GBR888_1X24,
56 MEDIA_BUS_FMT_BGR888_1X24,
57 MEDIA_BUS_FMT_BGR888_3X8,
58 MEDIA_BUS_FMT_RGB888_1X24,
59 MEDIA_BUS_FMT_RGB888_2X12_BE,
60 MEDIA_BUS_FMT_RGB888_2X12_LE,
61 MEDIA_BUS_FMT_RGB888_3X8,
62 MEDIA_BUS_FMT_RGB888_1X7X4_SPWG,
63 MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA,
64 MEDIA_BUS_FMT_RGB888_1X32_PADHI,
65};
66
67static const struct vimc_deb_pix_map vimc_deb_pix_map_list[] = {
68 {
69 .code = MEDIA_BUS_FMT_SBGGR8_1X8,
70 .order = { { VIMC_DEB_BLUE, VIMC_DEB_GREEN },
71 { VIMC_DEB_GREEN, VIMC_DEB_RED } }
72 },
73 {
74 .code = MEDIA_BUS_FMT_SGBRG8_1X8,
75 .order = { { VIMC_DEB_GREEN, VIMC_DEB_BLUE },
76 { VIMC_DEB_RED, VIMC_DEB_GREEN } }
77 },
78 {
79 .code = MEDIA_BUS_FMT_SGRBG8_1X8,
80 .order = { { VIMC_DEB_GREEN, VIMC_DEB_RED },
81 { VIMC_DEB_BLUE, VIMC_DEB_GREEN } }
82 },
83 {
84 .code = MEDIA_BUS_FMT_SRGGB8_1X8,
85 .order = { { VIMC_DEB_RED, VIMC_DEB_GREEN },
86 { VIMC_DEB_GREEN, VIMC_DEB_BLUE } }
87 },
88 {
89 .code = MEDIA_BUS_FMT_SBGGR10_1X10,
90 .order = { { VIMC_DEB_BLUE, VIMC_DEB_GREEN },
91 { VIMC_DEB_GREEN, VIMC_DEB_RED } }
92 },
93 {
94 .code = MEDIA_BUS_FMT_SGBRG10_1X10,
95 .order = { { VIMC_DEB_GREEN, VIMC_DEB_BLUE },
96 { VIMC_DEB_RED, VIMC_DEB_GREEN } }
97 },
98 {
99 .code = MEDIA_BUS_FMT_SGRBG10_1X10,
100 .order = { { VIMC_DEB_GREEN, VIMC_DEB_RED },
101 { VIMC_DEB_BLUE, VIMC_DEB_GREEN } }
102 },
103 {
104 .code = MEDIA_BUS_FMT_SRGGB10_1X10,
105 .order = { { VIMC_DEB_RED, VIMC_DEB_GREEN },
106 { VIMC_DEB_GREEN, VIMC_DEB_BLUE } }
107 },
108 {
109 .code = MEDIA_BUS_FMT_SBGGR12_1X12,
110 .order = { { VIMC_DEB_BLUE, VIMC_DEB_GREEN },
111 { VIMC_DEB_GREEN, VIMC_DEB_RED } }
112 },
113 {
114 .code = MEDIA_BUS_FMT_SGBRG12_1X12,
115 .order = { { VIMC_DEB_GREEN, VIMC_DEB_BLUE },
116 { VIMC_DEB_RED, VIMC_DEB_GREEN } }
117 },
118 {
119 .code = MEDIA_BUS_FMT_SGRBG12_1X12,
120 .order = { { VIMC_DEB_GREEN, VIMC_DEB_RED },
121 { VIMC_DEB_BLUE, VIMC_DEB_GREEN } }
122 },
123 {
124 .code = MEDIA_BUS_FMT_SRGGB12_1X12,
125 .order = { { VIMC_DEB_RED, VIMC_DEB_GREEN },
126 { VIMC_DEB_GREEN, VIMC_DEB_BLUE } }
127 },
128};
129
130static const struct vimc_deb_pix_map *vimc_deb_pix_map_by_code(u32 code)
131{
132 unsigned int i;
133
134 for (i = 0; i < ARRAY_SIZE(vimc_deb_pix_map_list); i++)
135 if (vimc_deb_pix_map_list[i].code == code)
136 return &vimc_deb_pix_map_list[i];
137
138 return NULL;
139}
140
141static bool vimc_deb_src_code_is_valid(u32 code)
142{
143 unsigned int i;
144
145 for (i = 0; i < ARRAY_SIZE(vimc_deb_src_mbus_codes); i++)
146 if (vimc_deb_src_mbus_codes[i] == code)
147 return true;
148
149 return false;
150}
151
152static int vimc_deb_init_cfg(struct v4l2_subdev *sd,
153 struct v4l2_subdev_state *sd_state)
154{
155 struct vimc_deb_device *vdeb = v4l2_get_subdevdata(sd);
156 struct v4l2_mbus_framefmt *mf;
157 unsigned int i;
158
159 mf = v4l2_subdev_get_try_format(sd, sd_state, 0);
160 *mf = sink_fmt_default;
161
162 for (i = 1; i < sd->entity.num_pads; i++) {
163 mf = v4l2_subdev_get_try_format(sd, sd_state, i);
164 *mf = sink_fmt_default;
165 mf->code = vdeb->src_code;
166 }
167
168 return 0;
169}
170
171static int vimc_deb_enum_mbus_code(struct v4l2_subdev *sd,
172 struct v4l2_subdev_state *sd_state,
173 struct v4l2_subdev_mbus_code_enum *code)
174{
175 if (VIMC_IS_SRC(code->pad)) {
176 if (code->index >= ARRAY_SIZE(vimc_deb_src_mbus_codes))
177 return -EINVAL;
178
179 code->code = vimc_deb_src_mbus_codes[code->index];
180 } else {
181 if (code->index >= ARRAY_SIZE(vimc_deb_pix_map_list))
182 return -EINVAL;
183
184 code->code = vimc_deb_pix_map_list[code->index].code;
185 }
186
187 return 0;
188}
189
190static int vimc_deb_enum_frame_size(struct v4l2_subdev *sd,
191 struct v4l2_subdev_state *sd_state,
192 struct v4l2_subdev_frame_size_enum *fse)
193{
194 if (fse->index)
195 return -EINVAL;
196
197 if (VIMC_IS_SINK(fse->pad)) {
198 const struct vimc_deb_pix_map *vpix =
199 vimc_deb_pix_map_by_code(fse->code);
200
201 if (!vpix)
202 return -EINVAL;
203 } else if (!vimc_deb_src_code_is_valid(fse->code)) {
204 return -EINVAL;
205 }
206
207 fse->min_width = VIMC_FRAME_MIN_WIDTH;
208 fse->max_width = VIMC_FRAME_MAX_WIDTH;
209 fse->min_height = VIMC_FRAME_MIN_HEIGHT;
210 fse->max_height = VIMC_FRAME_MAX_HEIGHT;
211
212 return 0;
213}
214
215static int vimc_deb_get_fmt(struct v4l2_subdev *sd,
216 struct v4l2_subdev_state *sd_state,
217 struct v4l2_subdev_format *fmt)
218{
219 struct vimc_deb_device *vdeb = v4l2_get_subdevdata(sd);
220
221
222 fmt->format = fmt->which == V4L2_SUBDEV_FORMAT_TRY ?
223 *v4l2_subdev_get_try_format(sd, sd_state, 0) :
224 vdeb->sink_fmt;
225
226
227 if (VIMC_IS_SRC(fmt->pad))
228 fmt->format.code = vdeb->src_code;
229
230 return 0;
231}
232
233static void vimc_deb_adjust_sink_fmt(struct v4l2_mbus_framefmt *fmt)
234{
235 const struct vimc_deb_pix_map *vpix;
236
237
238 vpix = vimc_deb_pix_map_by_code(fmt->code);
239 if (!vpix)
240 fmt->code = sink_fmt_default.code;
241
242 fmt->width = clamp_t(u32, fmt->width, VIMC_FRAME_MIN_WIDTH,
243 VIMC_FRAME_MAX_WIDTH) & ~1;
244 fmt->height = clamp_t(u32, fmt->height, VIMC_FRAME_MIN_HEIGHT,
245 VIMC_FRAME_MAX_HEIGHT) & ~1;
246
247 if (fmt->field == V4L2_FIELD_ANY)
248 fmt->field = sink_fmt_default.field;
249
250 vimc_colorimetry_clamp(fmt);
251}
252
253static int vimc_deb_set_fmt(struct v4l2_subdev *sd,
254 struct v4l2_subdev_state *sd_state,
255 struct v4l2_subdev_format *fmt)
256{
257 struct vimc_deb_device *vdeb = v4l2_get_subdevdata(sd);
258 struct v4l2_mbus_framefmt *sink_fmt;
259 u32 *src_code;
260
261 if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
262
263 if (vdeb->src_frame)
264 return -EBUSY;
265
266 sink_fmt = &vdeb->sink_fmt;
267 src_code = &vdeb->src_code;
268 } else {
269 sink_fmt = v4l2_subdev_get_try_format(sd, sd_state, 0);
270 src_code = &v4l2_subdev_get_try_format(sd, sd_state, 1)->code;
271 }
272
273
274
275
276
277 if (VIMC_IS_SRC(fmt->pad)) {
278 u32 code = fmt->format.code;
279
280 fmt->format = *sink_fmt;
281
282 if (vimc_deb_src_code_is_valid(code))
283 *src_code = code;
284
285 fmt->format.code = *src_code;
286 } else {
287
288 vimc_deb_adjust_sink_fmt(&fmt->format);
289
290 dev_dbg(vdeb->ved.dev, "%s: sink format update: "
291 "old:%dx%d (0x%x, %d, %d, %d, %d) "
292 "new:%dx%d (0x%x, %d, %d, %d, %d)\n", vdeb->sd.name,
293
294 sink_fmt->width, sink_fmt->height, sink_fmt->code,
295 sink_fmt->colorspace, sink_fmt->quantization,
296 sink_fmt->xfer_func, sink_fmt->ycbcr_enc,
297
298 fmt->format.width, fmt->format.height, fmt->format.code,
299 fmt->format.colorspace, fmt->format.quantization,
300 fmt->format.xfer_func, fmt->format.ycbcr_enc);
301
302 *sink_fmt = fmt->format;
303 }
304
305 return 0;
306}
307
308static const struct v4l2_subdev_pad_ops vimc_deb_pad_ops = {
309 .init_cfg = vimc_deb_init_cfg,
310 .enum_mbus_code = vimc_deb_enum_mbus_code,
311 .enum_frame_size = vimc_deb_enum_frame_size,
312 .get_fmt = vimc_deb_get_fmt,
313 .set_fmt = vimc_deb_set_fmt,
314};
315
316static void vimc_deb_process_rgb_frame(struct vimc_deb_device *vdeb,
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(vdeb->src_code);
325 index = VIMC_FRAME_INDEX(lin, col, vdeb->sink_fmt.width, 3);
326 for (i = 0; i < 3; i++) {
327 switch (vpix->pixelformat) {
328 case V4L2_PIX_FMT_RGB24:
329 vdeb->src_frame[index + i] = rgb[i];
330 break;
331 case V4L2_PIX_FMT_BGR24:
332 vdeb->src_frame[index + i] = rgb[2 - i];
333 break;
334 }
335 }
336}
337
338static int vimc_deb_s_stream(struct v4l2_subdev *sd, int enable)
339{
340 struct vimc_deb_device *vdeb = v4l2_get_subdevdata(sd);
341
342 if (enable) {
343 const struct vimc_pix_map *vpix;
344 unsigned int frame_size;
345
346 if (vdeb->src_frame)
347 return 0;
348
349
350 vpix = vimc_pix_map_by_code(vdeb->src_code);
351 frame_size = vdeb->sink_fmt.width * vdeb->sink_fmt.height *
352 vpix->bpp;
353
354
355 vpix = vimc_pix_map_by_code(vdeb->sink_fmt.code);
356 vdeb->sink_bpp = vpix->bpp;
357
358
359 vdeb->sink_pix_map =
360 vimc_deb_pix_map_by_code(vdeb->sink_fmt.code);
361
362
363
364
365
366 vdeb->src_frame = vmalloc(frame_size);
367 if (!vdeb->src_frame)
368 return -ENOMEM;
369
370 } else {
371 if (!vdeb->src_frame)
372 return 0;
373
374 vfree(vdeb->src_frame);
375 vdeb->src_frame = NULL;
376 }
377
378 return 0;
379}
380
381static const struct v4l2_subdev_core_ops vimc_deb_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_deb_video_ops = {
388 .s_stream = vimc_deb_s_stream,
389};
390
391static const struct v4l2_subdev_ops vimc_deb_ops = {
392 .core = &vimc_deb_core_ops,
393 .pad = &vimc_deb_pad_ops,
394 .video = &vimc_deb_video_ops,
395};
396
397static unsigned int vimc_deb_get_val(const u8 *bytes,
398 const unsigned int n_bytes)
399{
400 unsigned int i;
401 unsigned int acc = 0;
402
403 for (i = 0; i < n_bytes; i++)
404 acc = acc + (bytes[i] << (8 * i));
405
406 return acc;
407}
408
409static void vimc_deb_calc_rgb_sink(struct vimc_deb_device *vdeb,
410 const u8 *frame,
411 const unsigned int lin,
412 const unsigned int col,
413 unsigned int rgb[3])
414{
415 unsigned int i, seek, wlin, wcol;
416 unsigned int n_rgb[3] = {0, 0, 0};
417
418 for (i = 0; i < 3; i++)
419 rgb[i] = 0;
420
421
422
423
424
425
426 seek = vdeb->mean_win_size / 2;
427
428
429
430 dev_dbg(vdeb->ved.dev,
431 "deb: %s: --- Calc pixel %dx%d, window mean %d, seek %d ---\n",
432 vdeb->sd.name, lin, col, vdeb->sink_fmt.height, seek);
433
434
435
436
437
438
439
440 for (wlin = seek > lin ? 0 : lin - seek;
441 wlin < lin + seek + 1 && wlin < vdeb->sink_fmt.height;
442 wlin++) {
443
444
445
446
447
448
449
450 for (wcol = seek > col ? 0 : col - seek;
451 wcol < col + seek + 1 && wcol < vdeb->sink_fmt.width;
452 wcol++) {
453 enum vimc_deb_rgb_colors color;
454 unsigned int index;
455
456
457 color = vdeb->sink_pix_map->order[wlin % 2][wcol % 2];
458
459 index = VIMC_FRAME_INDEX(wlin, wcol,
460 vdeb->sink_fmt.width,
461 vdeb->sink_bpp);
462
463 dev_dbg(vdeb->ved.dev,
464 "deb: %s: RGB CALC: frame index %d, win pos %dx%d, color %d\n",
465 vdeb->sd.name, index, wlin, wcol, color);
466
467
468 rgb[color] = rgb[color] +
469 vimc_deb_get_val(&frame[index], vdeb->sink_bpp);
470
471
472 n_rgb[color]++;
473
474 dev_dbg(vdeb->ved.dev, "deb: %s: RGB CALC: val %d, n %d\n",
475 vdeb->sd.name, rgb[color], n_rgb[color]);
476 }
477 }
478
479
480 for (i = 0; i < 3; i++) {
481 dev_dbg(vdeb->ved.dev,
482 "deb: %s: PRE CALC: %dx%d Color %d, val %d, n %d\n",
483 vdeb->sd.name, lin, col, i, rgb[i], n_rgb[i]);
484
485 if (n_rgb[i])
486 rgb[i] = rgb[i] / n_rgb[i];
487
488 dev_dbg(vdeb->ved.dev,
489 "deb: %s: FINAL CALC: %dx%d Color %d, val %d\n",
490 vdeb->sd.name, lin, col, i, rgb[i]);
491 }
492}
493
494static void *vimc_deb_process_frame(struct vimc_ent_device *ved,
495 const void *sink_frame)
496{
497 struct vimc_deb_device *vdeb = container_of(ved, struct vimc_deb_device,
498 ved);
499 unsigned int rgb[3];
500 unsigned int i, j;
501
502
503 if (!vdeb->src_frame)
504 return ERR_PTR(-EINVAL);
505
506 for (i = 0; i < vdeb->sink_fmt.height; i++)
507 for (j = 0; j < vdeb->sink_fmt.width; j++) {
508 vimc_deb_calc_rgb_sink(vdeb, sink_frame, i, j, rgb);
509 vdeb->set_rgb_src(vdeb, i, j, rgb);
510 }
511
512 return vdeb->src_frame;
513}
514
515static int vimc_deb_s_ctrl(struct v4l2_ctrl *ctrl)
516{
517 struct vimc_deb_device *vdeb =
518 container_of(ctrl->handler, struct vimc_deb_device, hdl);
519
520 switch (ctrl->id) {
521 case VIMC_CID_MEAN_WIN_SIZE:
522 vdeb->mean_win_size = ctrl->val;
523 break;
524 default:
525 return -EINVAL;
526 }
527 return 0;
528}
529
530static const struct v4l2_ctrl_ops vimc_deb_ctrl_ops = {
531 .s_ctrl = vimc_deb_s_ctrl,
532};
533
534static void vimc_deb_release(struct vimc_ent_device *ved)
535{
536 struct vimc_deb_device *vdeb =
537 container_of(ved, struct vimc_deb_device, ved);
538
539 v4l2_ctrl_handler_free(&vdeb->hdl);
540 media_entity_cleanup(vdeb->ved.ent);
541 kfree(vdeb);
542}
543
544static const struct v4l2_ctrl_config vimc_deb_ctrl_class = {
545 .flags = V4L2_CTRL_FLAG_READ_ONLY | V4L2_CTRL_FLAG_WRITE_ONLY,
546 .id = VIMC_CID_VIMC_CLASS,
547 .name = "VIMC Controls",
548 .type = V4L2_CTRL_TYPE_CTRL_CLASS,
549};
550
551static const struct v4l2_ctrl_config vimc_deb_ctrl_mean_win_size = {
552 .ops = &vimc_deb_ctrl_ops,
553 .id = VIMC_CID_MEAN_WIN_SIZE,
554 .name = "Debayer Mean Window Size",
555 .type = V4L2_CTRL_TYPE_INTEGER,
556 .min = 1,
557 .max = 25,
558 .step = 2,
559 .def = 3,
560};
561
562static struct vimc_ent_device *vimc_deb_add(struct vimc_device *vimc,
563 const char *vcfg_name)
564{
565 struct v4l2_device *v4l2_dev = &vimc->v4l2_dev;
566 struct vimc_deb_device *vdeb;
567 int ret;
568
569
570 vdeb = kzalloc(sizeof(*vdeb), GFP_KERNEL);
571 if (!vdeb)
572 return ERR_PTR(-ENOMEM);
573
574
575 v4l2_ctrl_handler_init(&vdeb->hdl, 2);
576 v4l2_ctrl_new_custom(&vdeb->hdl, &vimc_deb_ctrl_class, NULL);
577 v4l2_ctrl_new_custom(&vdeb->hdl, &vimc_deb_ctrl_mean_win_size, NULL);
578 vdeb->sd.ctrl_handler = &vdeb->hdl;
579 if (vdeb->hdl.error) {
580 ret = vdeb->hdl.error;
581 goto err_free_vdeb;
582 }
583
584
585 vdeb->pads[0].flags = MEDIA_PAD_FL_SINK;
586 vdeb->pads[1].flags = MEDIA_PAD_FL_SOURCE;
587
588 ret = vimc_ent_sd_register(&vdeb->ved, &vdeb->sd, v4l2_dev,
589 vcfg_name,
590 MEDIA_ENT_F_PROC_VIDEO_PIXEL_ENC_CONV, 2,
591 vdeb->pads, &vimc_deb_ops);
592 if (ret)
593 goto err_free_hdl;
594
595 vdeb->ved.process_frame = vimc_deb_process_frame;
596 vdeb->ved.dev = vimc->mdev.dev;
597 vdeb->mean_win_size = vimc_deb_ctrl_mean_win_size.def;
598
599
600 vdeb->sink_fmt = sink_fmt_default;
601
602
603
604
605
606
607 vdeb->src_code = MEDIA_BUS_FMT_RGB888_1X24;
608 vdeb->set_rgb_src = vimc_deb_process_rgb_frame;
609
610 return &vdeb->ved;
611
612err_free_hdl:
613 v4l2_ctrl_handler_free(&vdeb->hdl);
614err_free_vdeb:
615 kfree(vdeb);
616
617 return ERR_PTR(ret);
618}
619
620struct vimc_ent_type vimc_deb_type = {
621 .add = vimc_deb_add,
622 .release = vimc_deb_release
623};
624
