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1 From ce8cc7a85839af588b753ce4af0832db9c467f45 Mon Sep 17 00:00:00 2001
2 From: Dave Stevenson <dave.stevenson@raspberrypi.org>
3 Date: Wed, 13 Feb 2019 13:44:00 +0000
4 Subject: [PATCH] staging: bcm2835_codec: Query supported formats from
5 the component
6
7 The driver was previously working with hard coded tables of
8 which video formats were supported by each component.
9 The components advertise this information via a MMAL parameter,
10 so retrieve the information from there during probe, and store
11 in the state structure for that device.
12
13 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
14 ---
15 .../bcm2835-codec/bcm2835-v4l2-codec.c | 455 +++++++++++++-----
16 1 file changed, 327 insertions(+), 128 deletions(-)
17
18 --- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
19 +++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
20 @@ -88,17 +88,12 @@ struct bcm2835_codec_fmt {
21 int bytesperline_align;
22 u32 flags;
23 u32 mmal_fmt;
24 - bool decode_only;
25 - bool encode_only;
26 int size_multiplier_x2;
27 };
28
29 -/* Supported raw pixel formats. Those supported for both encode and decode
30 - * must come first, with those only supported for decode coming after (there
31 - * are no formats supported for encode only).
32 - */
33 -static struct bcm2835_codec_fmt raw_formats[] = {
34 +static const struct bcm2835_codec_fmt supported_formats[] = {
35 {
36 + /* YUV formats */
37 .fourcc = V4L2_PIX_FMT_YUV420,
38 .depth = 8,
39 .bytesperline_align = 32,
40 @@ -139,7 +134,6 @@ static struct bcm2835_codec_fmt raw_form
41 .bytesperline_align = 32,
42 .flags = 0,
43 .mmal_fmt = MMAL_ENCODING_YUYV,
44 - .encode_only = true,
45 .size_multiplier_x2 = 2,
46 }, {
47 .fourcc = V4L2_PIX_FMT_UYVY,
48 @@ -147,7 +141,6 @@ static struct bcm2835_codec_fmt raw_form
49 .bytesperline_align = 32,
50 .flags = 0,
51 .mmal_fmt = MMAL_ENCODING_UYVY,
52 - .encode_only = true,
53 .size_multiplier_x2 = 2,
54 }, {
55 .fourcc = V4L2_PIX_FMT_YVYU,
56 @@ -155,7 +148,6 @@ static struct bcm2835_codec_fmt raw_form
57 .bytesperline_align = 32,
58 .flags = 0,
59 .mmal_fmt = MMAL_ENCODING_YVYU,
60 - .encode_only = true,
61 .size_multiplier_x2 = 2,
62 }, {
63 .fourcc = V4L2_PIX_FMT_VYUY,
64 @@ -163,15 +155,14 @@ static struct bcm2835_codec_fmt raw_form
65 .bytesperline_align = 32,
66 .flags = 0,
67 .mmal_fmt = MMAL_ENCODING_VYUY,
68 - .encode_only = true,
69 .size_multiplier_x2 = 2,
70 }, {
71 + /* RGB formats */
72 .fourcc = V4L2_PIX_FMT_RGB24,
73 .depth = 24,
74 .bytesperline_align = 32,
75 .flags = 0,
76 .mmal_fmt = MMAL_ENCODING_RGB24,
77 - .encode_only = true,
78 .size_multiplier_x2 = 2,
79 }, {
80 .fourcc = V4L2_PIX_FMT_BGR24,
81 @@ -179,7 +170,6 @@ static struct bcm2835_codec_fmt raw_form
82 .bytesperline_align = 32,
83 .flags = 0,
84 .mmal_fmt = MMAL_ENCODING_BGR24,
85 - .encode_only = true,
86 .size_multiplier_x2 = 2,
87 }, {
88 .fourcc = V4L2_PIX_FMT_BGR32,
89 @@ -187,17 +177,126 @@ static struct bcm2835_codec_fmt raw_form
90 .bytesperline_align = 32,
91 .flags = 0,
92 .mmal_fmt = MMAL_ENCODING_BGRA,
93 - .encode_only = true,
94 .size_multiplier_x2 = 2,
95 - },
96 -};
97 -
98 -/* Supported encoded formats. Those supported for both encode and decode
99 - * must come first, with those only supported for decode coming after (there
100 - * are no formats supported for encode only).
101 - */
102 -static struct bcm2835_codec_fmt encoded_formats[] = {
103 - {
104 + }, {
105 + /* Bayer formats */
106 + /* 8 bit */
107 + .fourcc = V4L2_PIX_FMT_SRGGB8,
108 + .depth = 8,
109 + .bytesperline_align = 32,
110 + .flags = 0,
111 + .mmal_fmt = MMAL_ENCODING_BAYER_SRGGB8,
112 + .size_multiplier_x2 = 2,
113 + }, {
114 + .fourcc = V4L2_PIX_FMT_SBGGR8,
115 + .depth = 8,
116 + .bytesperline_align = 32,
117 + .flags = 0,
118 + .mmal_fmt = MMAL_ENCODING_BAYER_SBGGR8,
119 + .size_multiplier_x2 = 2,
120 + }, {
121 + .fourcc = V4L2_PIX_FMT_SGRBG8,
122 + .depth = 8,
123 + .bytesperline_align = 32,
124 + .flags = 0,
125 + .mmal_fmt = MMAL_ENCODING_BAYER_SGRBG8,
126 + .size_multiplier_x2 = 2,
127 + }, {
128 + .fourcc = V4L2_PIX_FMT_SGBRG8,
129 + .depth = 8,
130 + .bytesperline_align = 32,
131 + .flags = 0,
132 + .mmal_fmt = MMAL_ENCODING_BAYER_SGBRG8,
133 + .size_multiplier_x2 = 2,
134 + }, {
135 + /* 10 bit */
136 + .fourcc = V4L2_PIX_FMT_SRGGB10P,
137 + .depth = 10,
138 + .bytesperline_align = 32,
139 + .flags = 0,
140 + .mmal_fmt = MMAL_ENCODING_BAYER_SRGGB10P,
141 + .size_multiplier_x2 = 2,
142 + }, {
143 + .fourcc = V4L2_PIX_FMT_SBGGR10P,
144 + .depth = 10,
145 + .bytesperline_align = 32,
146 + .flags = 0,
147 + .mmal_fmt = MMAL_ENCODING_BAYER_SBGGR10P,
148 + .size_multiplier_x2 = 2,
149 + }, {
150 + .fourcc = V4L2_PIX_FMT_SGRBG10P,
151 + .depth = 10,
152 + .bytesperline_align = 32,
153 + .flags = 0,
154 + .mmal_fmt = MMAL_ENCODING_BAYER_SGRBG10P,
155 + .size_multiplier_x2 = 2,
156 + }, {
157 + .fourcc = V4L2_PIX_FMT_SGBRG10P,
158 + .depth = 10,
159 + .bytesperline_align = 32,
160 + .flags = 0,
161 + .mmal_fmt = MMAL_ENCODING_BAYER_SGBRG10P,
162 + .size_multiplier_x2 = 2,
163 + }, {
164 + /* 12 bit */
165 + .fourcc = V4L2_PIX_FMT_SRGGB12P,
166 + .depth = 12,
167 + .bytesperline_align = 32,
168 + .flags = 0,
169 + .mmal_fmt = MMAL_ENCODING_BAYER_SRGGB12P,
170 + .size_multiplier_x2 = 2,
171 + }, {
172 + .fourcc = V4L2_PIX_FMT_SBGGR12P,
173 + .depth = 12,
174 + .bytesperline_align = 32,
175 + .flags = 0,
176 + .mmal_fmt = MMAL_ENCODING_BAYER_SBGGR12P,
177 + .size_multiplier_x2 = 2,
178 + }, {
179 + .fourcc = V4L2_PIX_FMT_SGRBG12P,
180 + .depth = 12,
181 + .bytesperline_align = 32,
182 + .flags = 0,
183 + .mmal_fmt = MMAL_ENCODING_BAYER_SGRBG12P,
184 + .size_multiplier_x2 = 2,
185 + }, {
186 + .fourcc = V4L2_PIX_FMT_SGBRG12P,
187 + .depth = 12,
188 + .bytesperline_align = 32,
189 + .flags = 0,
190 + .mmal_fmt = MMAL_ENCODING_BAYER_SGBRG12P,
191 + .size_multiplier_x2 = 2,
192 + }, {
193 + /* 16 bit */
194 + .fourcc = V4L2_PIX_FMT_SRGGB16,
195 + .depth = 16,
196 + .bytesperline_align = 32,
197 + .flags = 0,
198 + .mmal_fmt = MMAL_ENCODING_BAYER_SRGGB16,
199 + .size_multiplier_x2 = 2,
200 + }, {
201 + .fourcc = V4L2_PIX_FMT_SBGGR16,
202 + .depth = 16,
203 + .bytesperline_align = 32,
204 + .flags = 0,
205 + .mmal_fmt = MMAL_ENCODING_BAYER_SBGGR16,
206 + .size_multiplier_x2 = 2,
207 + }, {
208 + .fourcc = V4L2_PIX_FMT_SGRBG16,
209 + .depth = 16,
210 + .bytesperline_align = 32,
211 + .flags = 0,
212 + .mmal_fmt = MMAL_ENCODING_BAYER_SGRBG16,
213 + .size_multiplier_x2 = 2,
214 + }, {
215 + .fourcc = V4L2_PIX_FMT_SGBRG16,
216 + .depth = 16,
217 + .bytesperline_align = 32,
218 + .flags = 0,
219 + .mmal_fmt = MMAL_ENCODING_BAYER_SGBRG16,
220 + .size_multiplier_x2 = 2,
221 + }, {
222 + /* Compressed formats */
223 .fourcc = V4L2_PIX_FMT_H264,
224 .depth = 0,
225 .flags = V4L2_FMT_FLAG_COMPRESSED,
226 @@ -212,30 +311,22 @@ static struct bcm2835_codec_fmt encoded_
227 .depth = 0,
228 .flags = V4L2_FMT_FLAG_COMPRESSED,
229 .mmal_fmt = MMAL_ENCODING_MP4V,
230 - .decode_only = true,
231 }, {
232 .fourcc = V4L2_PIX_FMT_H263,
233 .depth = 0,
234 .flags = V4L2_FMT_FLAG_COMPRESSED,
235 .mmal_fmt = MMAL_ENCODING_H263,
236 - .decode_only = true,
237 }, {
238 .fourcc = V4L2_PIX_FMT_MPEG2,
239 .depth = 0,
240 .flags = V4L2_FMT_FLAG_COMPRESSED,
241 .mmal_fmt = MMAL_ENCODING_MP2V,
242 - .decode_only = true,
243 }, {
244 .fourcc = V4L2_PIX_FMT_VP8,
245 .depth = 0,
246 .flags = V4L2_FMT_FLAG_COMPRESSED,
247 .mmal_fmt = MMAL_ENCODING_VP8,
248 - .decode_only = true,
249 },
250 - /*
251 - * This list couold include VP6 and Theorafor decode, but V4L2 doesn't
252 - * support them.
253 - */
254 };
255
256 struct bcm2835_codec_fmt_list {
257 @@ -243,19 +334,6 @@ struct bcm2835_codec_fmt_list {
258 unsigned int num_entries;
259 };
260
261 -#define RAW_LIST 0
262 -#define ENCODED_LIST 1
263 -
264 -struct bcm2835_codec_fmt_list formats[] = {
265 - {
266 - .list = raw_formats,
267 - .num_entries = ARRAY_SIZE(raw_formats),
268 - }, {
269 - .list = encoded_formats,
270 - .num_entries = ARRAY_SIZE(encoded_formats),
271 - },
272 -};
273 -
274 struct m2m_mmal_buffer {
275 struct v4l2_m2m_buffer m2m;
276 struct mmal_buffer mmal;
277 @@ -284,52 +362,6 @@ struct bcm2835_codec_q_data {
278 bool eos_buffer_in_use; /* debug only */
279 };
280
281 -enum {
282 - V4L2_M2M_SRC = 0,
283 - V4L2_M2M_DST = 1,
284 -};
285 -
286 -static inline struct bcm2835_codec_fmt_list *get_format_list(bool decode,
287 - bool capture)
288 -{
289 - return decode ^ capture ? &formats[ENCODED_LIST] : &formats[RAW_LIST];
290 -}
291 -
292 -static struct bcm2835_codec_fmt *get_default_format(bool decode, bool capture)
293 -{
294 - return &get_format_list(decode, capture)->list[0];
295 -}
296 -
297 -static struct bcm2835_codec_fmt *find_format(struct v4l2_format *f, bool decode,
298 - bool capture)
299 -{
300 - struct bcm2835_codec_fmt *fmt;
301 - unsigned int k;
302 - struct bcm2835_codec_fmt_list *fmts = get_format_list(decode, capture);
303 -
304 - for (k = 0; k < fmts->num_entries; k++) {
305 - fmt = &fmts->list[k];
306 - if (fmt->fourcc == f->fmt.pix.pixelformat)
307 - break;
308 - }
309 -
310 - /*
311 - * Some compressed formats are only supported for decoding, not
312 - * encoding.
313 - */
314 - if (!decode && fmts->list[k].decode_only)
315 - return NULL;
316 -
317 - /* Some pixel formats are only supported for encoding, not decoding. */
318 - if (decode && fmts->list[k].encode_only)
319 - return NULL;
320 -
321 - if (k == fmts->num_entries)
322 - return NULL;
323 -
324 - return &fmts->list[k];
325 -}
326 -
327 struct bcm2835_codec_dev {
328 struct platform_device *pdev;
329
330 @@ -342,6 +374,9 @@ struct bcm2835_codec_dev {
331
332 /* allocated mmal instance and components */
333 bool decode; /* Is this instance a decoder? */
334 + /* The list of formats supported on input and output queues. */
335 + struct bcm2835_codec_fmt_list supported_fmts[2];
336 +
337 struct vchiq_mmal_instance *instance;
338
339 struct v4l2_m2m_dev *m2m_dev;
340 @@ -374,8 +409,59 @@ struct bcm2835_codec_ctx {
341 struct bcm2835_codec_driver {
342 struct bcm2835_codec_dev *encode;
343 struct bcm2835_codec_dev *decode;
344 + struct bcm2835_codec_dev *isp;
345 +};
346 +
347 +enum {
348 + V4L2_M2M_SRC = 0,
349 + V4L2_M2M_DST = 1,
350 };
351
352 +static const struct bcm2835_codec_fmt *get_fmt(u32 mmal_fmt)
353 +{
354 + unsigned int i;
355 +
356 + for (i = 0; i < ARRAY_SIZE(supported_formats); i++) {
357 + if (supported_formats[i].mmal_fmt == mmal_fmt)
358 + return &supported_formats[i];
359 + }
360 + return NULL;
361 +}
362 +
363 +static inline
364 +struct bcm2835_codec_fmt_list *get_format_list(struct bcm2835_codec_dev *dev,
365 + bool capture)
366 +{
367 + return &dev->supported_fmts[capture ? 1 : 0];
368 +}
369 +
370 +static
371 +struct bcm2835_codec_fmt *get_default_format(struct bcm2835_codec_dev *dev,
372 + bool capture)
373 +{
374 + return &dev->supported_fmts[capture ? 1 : 0].list[0];
375 +}
376 +
377 +static struct bcm2835_codec_fmt *find_format(struct v4l2_format *f,
378 + struct bcm2835_codec_dev *dev,
379 + bool capture)
380 +{
381 + struct bcm2835_codec_fmt *fmt;
382 + unsigned int k;
383 + struct bcm2835_codec_fmt_list *fmts =
384 + &dev->supported_fmts[capture ? 1 : 0];
385 +
386 + for (k = 0; k < fmts->num_entries; k++) {
387 + fmt = &fmts->list[k];
388 + if (fmt->fourcc == f->fmt.pix.pixelformat)
389 + break;
390 + }
391 + if (k == fmts->num_entries)
392 + return NULL;
393 +
394 + return &fmts->list[k];
395 +}
396 +
397 static inline struct bcm2835_codec_ctx *file2ctx(struct file *file)
398 {
399 return container_of(file->private_data, struct bcm2835_codec_ctx, fh);
400 @@ -456,7 +542,6 @@ static inline unsigned int get_bytesperl
401 }
402
403 static void setup_mmal_port_format(struct bcm2835_codec_ctx *ctx,
404 - bool decode,
405 struct bcm2835_codec_q_data *q_data,
406 struct vchiq_mmal_port *port)
407 {
408 @@ -473,7 +558,7 @@ static void setup_mmal_port_format(struc
409 port->es.video.frame_rate.den = 1;
410 } else {
411 /* Compressed format - leave resolution as 0 for decode */
412 - if (decode) {
413 + if (ctx->dev->decode) {
414 port->es.video.width = 0;
415 port->es.video.height = 0;
416 port->es.video.crop.width = 0;
417 @@ -802,22 +887,15 @@ static int vidioc_querycap(struct file *
418 return 0;
419 }
420
421 -static int enum_fmt(struct v4l2_fmtdesc *f, bool decode, bool capture)
422 +static int enum_fmt(struct v4l2_fmtdesc *f, struct bcm2835_codec_ctx *ctx,
423 + bool capture)
424 {
425 struct bcm2835_codec_fmt *fmt;
426 - struct bcm2835_codec_fmt_list *fmts = get_format_list(decode, capture);
427 + struct bcm2835_codec_fmt_list *fmts =
428 + get_format_list(ctx->dev, capture);
429
430 if (f->index < fmts->num_entries) {
431 /* Format found */
432 - /* Check format isn't a decode only format when encoding */
433 - if (!decode &&
434 - fmts->list[f->index].decode_only)
435 - return -EINVAL;
436 - /* Check format isn't a decode only format when encoding */
437 - if (decode &&
438 - fmts->list[f->index].encode_only)
439 - return -EINVAL;
440 -
441 fmt = &fmts->list[f->index];
442 f->pixelformat = fmt->fourcc;
443 f->flags = fmt->flags;
444 @@ -833,7 +911,7 @@ static int vidioc_enum_fmt_vid_cap(struc
445 {
446 struct bcm2835_codec_ctx *ctx = file2ctx(file);
447
448 - return enum_fmt(f, ctx->dev->decode, true);
449 + return enum_fmt(f, ctx, true);
450 }
451
452 static int vidioc_enum_fmt_vid_out(struct file *file, void *priv,
453 @@ -841,7 +919,7 @@ static int vidioc_enum_fmt_vid_out(struc
454 {
455 struct bcm2835_codec_ctx *ctx = file2ctx(file);
456
457 - return enum_fmt(f, ctx->dev->decode, false);
458 + return enum_fmt(f, ctx, false);
459 }
460
461 static int vidioc_g_fmt(struct bcm2835_codec_ctx *ctx, struct v4l2_format *f)
462 @@ -933,11 +1011,11 @@ static int vidioc_try_fmt_vid_cap(struct
463 struct bcm2835_codec_fmt *fmt;
464 struct bcm2835_codec_ctx *ctx = file2ctx(file);
465
466 - fmt = find_format(f, ctx->dev->decode, true);
467 + fmt = find_format(f, ctx->dev, true);
468 if (!fmt) {
469 - f->fmt.pix.pixelformat = get_default_format(ctx->dev->decode,
470 + f->fmt.pix.pixelformat = get_default_format(ctx->dev,
471 true)->fourcc;
472 - fmt = find_format(f, ctx->dev->decode, true);
473 + fmt = find_format(f, ctx->dev, true);
474 }
475
476 return vidioc_try_fmt(f, fmt);
477 @@ -949,11 +1027,11 @@ static int vidioc_try_fmt_vid_out(struct
478 struct bcm2835_codec_fmt *fmt;
479 struct bcm2835_codec_ctx *ctx = file2ctx(file);
480
481 - fmt = find_format(f, ctx->dev->decode, false);
482 + fmt = find_format(f, ctx->dev, false);
483 if (!fmt) {
484 - f->fmt.pix.pixelformat = get_default_format(ctx->dev->decode,
485 + f->fmt.pix.pixelformat = get_default_format(ctx->dev,
486 false)->fourcc;
487 - fmt = find_format(f, ctx->dev->decode, false);
488 + fmt = find_format(f, ctx->dev, false);
489 }
490
491 if (!f->fmt.pix.colorspace)
492 @@ -988,7 +1066,7 @@ static int vidioc_s_fmt(struct bcm2835_c
493 return -EBUSY;
494 }
495
496 - q_data->fmt = find_format(f, ctx->dev->decode,
497 + q_data->fmt = find_format(f, ctx->dev,
498 f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE);
499 q_data->crop_width = f->fmt.pix.width;
500 q_data->height = f->fmt.pix.height;
501 @@ -1041,7 +1119,7 @@ static int vidioc_s_fmt(struct bcm2835_c
502 if (!port)
503 return 0;
504
505 - setup_mmal_port_format(ctx, ctx->dev->decode, q_data, port);
506 + setup_mmal_port_format(ctx, q_data, port);
507 ret = vchiq_mmal_port_set_format(ctx->dev->instance, port);
508 if (ret) {
509 v4l2_err(&ctx->dev->v4l2_dev, "%s: Failed vchiq_mmal_port_set_format on port, ret %d\n",
510 @@ -1064,8 +1142,7 @@ static int vidioc_s_fmt(struct bcm2835_c
511 struct bcm2835_codec_q_data *q_data_dst =
512 &ctx->q_data[V4L2_M2M_DST];
513
514 - setup_mmal_port_format(ctx, ctx->dev->decode, q_data_dst,
515 - port_dst);
516 + setup_mmal_port_format(ctx, q_data_dst, port_dst);
517 ret = vchiq_mmal_port_set_format(ctx->dev->instance, port_dst);
518 if (ret) {
519 v4l2_err(&ctx->dev->v4l2_dev, "%s: Failed vchiq_mmal_port_set_format on output port, ret %d\n",
520 @@ -1636,10 +1713,10 @@ static int bcm2835_codec_create_componen
521 MMAL_PARAMETER_ZERO_COPY, &enable,
522 sizeof(enable));
523
524 - setup_mmal_port_format(ctx, dev->decode, &ctx->q_data[V4L2_M2M_SRC],
525 + setup_mmal_port_format(ctx, &ctx->q_data[V4L2_M2M_SRC],
526 &ctx->component->input[0]);
527
528 - setup_mmal_port_format(ctx, dev->decode, &ctx->q_data[V4L2_M2M_DST],
529 + setup_mmal_port_format(ctx, &ctx->q_data[V4L2_M2M_DST],
530 &ctx->component->output[0]);
531
532 ret = vchiq_mmal_port_set_format(dev->instance,
533 @@ -2025,8 +2102,8 @@ static int bcm2835_codec_open(struct fil
534 goto open_unlock;
535 }
536
537 - ctx->q_data[V4L2_M2M_SRC].fmt = get_default_format(dev->decode, false);
538 - ctx->q_data[V4L2_M2M_DST].fmt = get_default_format(dev->decode, true);
539 + ctx->q_data[V4L2_M2M_SRC].fmt = get_default_format(dev, false);
540 + ctx->q_data[V4L2_M2M_DST].fmt = get_default_format(dev, true);
541 if (dev->decode) {
542 /*
543 * Input width and height are irrelevant as they will be defined
544 @@ -2209,13 +2286,130 @@ static const struct v4l2_m2m_ops m2m_ops
545 .job_abort = job_abort,
546 };
547
548 +/* Size of the array to provide to the VPU when asking for the list of supported
549 + * formats.
550 + * The ISP component currently advertises 33 input formats, so add a small
551 + * overhead on that.
552 + */
553 +#define MAX_SUPPORTED_ENCODINGS 40
554 +
555 +/* Populate dev->supported_fmts with the formats supported by those ports. */
556 +static int bcm2835_codec_get_supported_fmts(struct bcm2835_codec_dev *dev)
557 +{
558 + struct bcm2835_codec_fmt *list;
559 + struct vchiq_mmal_component *component;
560 + u32 fourccs[MAX_SUPPORTED_ENCODINGS];
561 + u32 param_size = sizeof(fourccs);
562 + unsigned int i, j, num_encodings;
563 + int ret;
564 +
565 + ret = vchiq_mmal_component_init(dev->instance,
566 + dev->decode ?
567 + "ril.video_decode" :
568 + "ril.video_encode",
569 + &component);
570 + if (ret < 0) {
571 + v4l2_err(&dev->v4l2_dev, "%s: failed to create component\n",
572 + __func__);
573 + return -ENOMEM;
574 + }
575 +
576 + ret = vchiq_mmal_port_parameter_get(dev->instance,
577 + &component->input[0],
578 + MMAL_PARAMETER_SUPPORTED_ENCODINGS,
579 + &fourccs,
580 + &param_size);
581 +
582 + if (ret) {
583 + if (ret == MMAL_MSG_STATUS_ENOSPC) {
584 + v4l2_err(&dev->v4l2_dev, "%s: port has more encoding than we provided space for. Some are dropped.\n",
585 + __func__);
586 + num_encodings = MAX_SUPPORTED_ENCODINGS;
587 + } else {
588 + v4l2_err(&dev->v4l2_dev, "%s: get_param ret %u.\n",
589 + __func__, ret);
590 + ret = -EINVAL;
591 + goto destroy_component;
592 + }
593 + } else {
594 + num_encodings = param_size / sizeof(u32);
595 + }
596 +
597 + /* Assume at this stage that all encodings will be supported in V4L2.
598 + * Any that aren't supported will waste a very small amount of memory.
599 + */
600 + list = devm_kzalloc(&dev->pdev->dev,
601 + sizeof(struct bcm2835_codec_fmt) * num_encodings,
602 + GFP_KERNEL);
603 + if (!list) {
604 + ret = -ENOMEM;
605 + goto destroy_component;
606 + }
607 + dev->supported_fmts[0].list = list;
608 +
609 + for (i = 0, j = 0; i < num_encodings; i++) {
610 + const struct bcm2835_codec_fmt *fmt = get_fmt(fourccs[i]);
611 +
612 + if (fmt) {
613 + list[j] = *fmt;
614 + j++;
615 + }
616 + }
617 + dev->supported_fmts[0].num_entries = j;
618 +
619 + param_size = sizeof(fourccs);
620 + ret = vchiq_mmal_port_parameter_get(dev->instance,
621 + &component->output[0],
622 + MMAL_PARAMETER_SUPPORTED_ENCODINGS,
623 + &fourccs,
624 + &param_size);
625 +
626 + if (ret) {
627 + if (ret == MMAL_MSG_STATUS_ENOSPC) {
628 + v4l2_err(&dev->v4l2_dev, "%s: port has more encoding than we provided space for. Some are dropped.\n",
629 + __func__);
630 + num_encodings = MAX_SUPPORTED_ENCODINGS;
631 + } else {
632 + ret = -EINVAL;
633 + goto destroy_component;
634 + }
635 + } else {
636 + num_encodings = param_size / sizeof(u32);
637 + }
638 + /* Assume at this stage that all encodings will be supported in V4L2. */
639 + list = devm_kzalloc(&dev->pdev->dev,
640 + sizeof(struct bcm2835_codec_fmt) * num_encodings,
641 + GFP_KERNEL);
642 + if (!list) {
643 + ret = -ENOMEM;
644 + goto destroy_component;
645 + }
646 + dev->supported_fmts[1].list = list;
647 +
648 + for (i = 0, j = 0; i < num_encodings; i++) {
649 + const struct bcm2835_codec_fmt *fmt = get_fmt(fourccs[i]);
650 +
651 + if (fmt) {
652 + list[j] = *fmt;
653 + j++;
654 + }
655 + }
656 + dev->supported_fmts[1].num_entries = j;
657 +
658 + ret = 0;
659 +
660 +destroy_component:
661 + vchiq_mmal_component_finalise(dev->instance, component);
662 +
663 + return ret;
664 +}
665 +
666 static int bcm2835_codec_create(struct platform_device *pdev,
667 struct bcm2835_codec_dev **new_dev,
668 bool decode)
669 {
670 struct bcm2835_codec_dev *dev;
671 struct video_device *vfd;
672 - struct vchiq_mmal_instance *instance = NULL;
673 int video_nr;
674 int ret;
675
676 @@ -2227,10 +2421,18 @@ static int bcm2835_codec_create(struct p
677
678 dev->decode = decode;
679
680 - ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
681 + ret = vchiq_mmal_init(&dev->instance);
682 if (ret)
683 return ret;
684
685 + ret = bcm2835_codec_get_supported_fmts(dev);
686 + if (ret)
687 + goto vchiq_finalise;
688 +
689 + ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
690 + if (ret)
691 + goto vchiq_finalise;
692 +
693 atomic_set(&dev->num_inst, 0);
694 mutex_init(&dev->dev_mutex);
695
696 @@ -2270,12 +2472,7 @@ static int bcm2835_codec_create(struct p
697 goto err_m2m;
698 }
699
700 - ret = vchiq_mmal_init(&instance);
701 - if (ret < 0)
702 - goto err_m2m;
703 - dev->instance = instance;
704 -
705 - v4l2_info(&dev->v4l2_dev, "Loaded V4L2 %s codec\n",
706 + v4l2_info(&dev->v4l2_dev, "Loaded V4L2 %s\n",
707 dev->decode ? "decode" : "encode");
708 return 0;
709
710 @@ -2284,7 +2481,8 @@ err_m2m:
711 video_unregister_device(&dev->vfd);
712 unreg_dev:
713 v4l2_device_unregister(&dev->v4l2_dev);
714 -
715 +vchiq_finalise:
716 + vchiq_mmal_finalise(dev->instance);
717 return ret;
718 }
719
720 @@ -2297,6 +2495,7 @@ static int bcm2835_codec_destroy(struct
721 v4l2_m2m_release(dev->m2m_dev);
722 video_unregister_device(&dev->vfd);
723 v4l2_device_unregister(&dev->v4l2_dev);
724 + vchiq_mmal_finalise(dev->instance);
725
726 return 0;
727 }
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