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WIP FPC-III support
[linux/fpc-iii.git] / drivers / media / platform / sti / hva / hva-v4l2.c
blobbb34d6997d99158d86d077bdc7331a593d63749a
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright (C) STMicroelectronics SA 2015
4 * Authors: Yannick Fertre <yannick.fertre@st.com>
5 * Hugues Fruchet <hugues.fruchet@st.com>
6 */
7
8 #include <linux/module.h>
9 #include <linux/mod_devicetable.h>
10 #include <linux/platform_device.h>
11 #include <linux/slab.h>
12 #include <media/v4l2-event.h>
13 #include <media/v4l2-ioctl.h>
14 #include <media/videobuf2-dma-contig.h>
15
16 #include "hva.h"
17 #include "hva-hw.h"
18
19 #define MIN_FRAMES 1
20 #define MIN_STREAMS 1
21
22 #define HVA_MIN_WIDTH 32
23 #define HVA_MAX_WIDTH 1920
24 #define HVA_MIN_HEIGHT 32
25 #define HVA_MAX_HEIGHT 1920
26
27 /* HVA requires a 16x16 pixels alignment for frames */
28 #define HVA_WIDTH_ALIGNMENT 16
29 #define HVA_HEIGHT_ALIGNMENT 16
30
31 #define HVA_DEFAULT_WIDTH HVA_MIN_WIDTH
32 #define HVA_DEFAULT_HEIGHT HVA_MIN_HEIGHT
33 #define HVA_DEFAULT_FRAME_NUM 1
34 #define HVA_DEFAULT_FRAME_DEN 30
35
36 #define to_type_str(type) (type == V4L2_BUF_TYPE_VIDEO_OUTPUT ? \
37 "frame" : "stream")
38
39 #define fh_to_ctx(f) (container_of(f, struct hva_ctx, fh))
40
41 /* registry of available encoders */
42 static const struct hva_enc *hva_encoders[] = {
43 &nv12h264enc,
44 &nv21h264enc,
45 };
46
47 static inline int frame_size(u32 w, u32 h, u32 fmt)
48 {
49 switch (fmt) {
50 case V4L2_PIX_FMT_NV12:
51 case V4L2_PIX_FMT_NV21:
52 return (w * h * 3) / 2;
53 default:
54 return 0;
55 }
56 }
57
58 static inline int frame_stride(u32 w, u32 fmt)
59 {
60 switch (fmt) {
61 case V4L2_PIX_FMT_NV12:
62 case V4L2_PIX_FMT_NV21:
63 return w;
64 default:
65 return 0;
66 }
67 }
68
69 static inline int frame_alignment(u32 fmt)
70 {
71 switch (fmt) {
72 case V4L2_PIX_FMT_NV12:
73 case V4L2_PIX_FMT_NV21:
74 /* multiple of 2 */
75 return 2;
76 default:
77 return 1;
78 }
79 }
80
81 static inline int estimated_stream_size(u32 w, u32 h)
82 {
83 /*
84 * HVA only encodes in YUV420 format, whatever the frame format.
85 * A compression ratio of 2 is assumed: thus, the maximum size
86 * of a stream is estimated to ((width x height x 3 / 2) / 2)
87 */
88 return (w * h * 3) / 4;
89 }
90
91 static void set_default_params(struct hva_ctx *ctx)
92 {
93 struct hva_frameinfo *frameinfo = &ctx->frameinfo;
94 struct hva_streaminfo *streaminfo = &ctx->streaminfo;
95
96 frameinfo->pixelformat = V4L2_PIX_FMT_NV12;
97 frameinfo->width = HVA_DEFAULT_WIDTH;
98 frameinfo->height = HVA_DEFAULT_HEIGHT;
99 frameinfo->aligned_width = ALIGN(frameinfo->width,
100 HVA_WIDTH_ALIGNMENT);
101 frameinfo->aligned_height = ALIGN(frameinfo->height,
102 HVA_HEIGHT_ALIGNMENT);
103 frameinfo->size = frame_size(frameinfo->aligned_width,
104 frameinfo->aligned_height,
105 frameinfo->pixelformat);
106
107 streaminfo->streamformat = V4L2_PIX_FMT_H264;
108 streaminfo->width = HVA_DEFAULT_WIDTH;
109 streaminfo->height = HVA_DEFAULT_HEIGHT;
110
111 ctx->colorspace = V4L2_COLORSPACE_REC709;
112 ctx->xfer_func = V4L2_XFER_FUNC_DEFAULT;
113 ctx->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
114 ctx->quantization = V4L2_QUANTIZATION_DEFAULT;
115
116 ctx->max_stream_size = estimated_stream_size(streaminfo->width,
117 streaminfo->height);
118 }
119
120 static const struct hva_enc *hva_find_encoder(struct hva_ctx *ctx,
121 u32 pixelformat,
122 u32 streamformat)
123 {
124 struct hva_dev *hva = ctx_to_hdev(ctx);
125 const struct hva_enc *enc;
126 unsigned int i;
127
128 for (i = 0; i < hva->nb_of_encoders; i++) {
129 enc = hva->encoders[i];
130 if ((enc->pixelformat == pixelformat) &&
131 (enc->streamformat == streamformat))
132 return enc;
133 }
134
135 return NULL;
136 }
137
138 static void register_format(u32 format, u32 formats[], u32 *nb_of_formats)
139 {
140 u32 i;
141 bool found = false;
142
143 for (i = 0; i < *nb_of_formats; i++) {
144 if (format == formats[i]) {
145 found = true;
146 break;
147 }
148 }
149
150 if (!found)
151 formats[(*nb_of_formats)++] = format;
152 }
153
154 static void register_formats(struct hva_dev *hva)
155 {
156 unsigned int i;
157
158 for (i = 0; i < hva->nb_of_encoders; i++) {
159 register_format(hva->encoders[i]->pixelformat,
160 hva->pixelformats,
161 &hva->nb_of_pixelformats);
162
163 register_format(hva->encoders[i]->streamformat,
164 hva->streamformats,
165 &hva->nb_of_streamformats);
166 }
167 }
168
169 static void register_encoders(struct hva_dev *hva)
170 {
171 struct device *dev = hva_to_dev(hva);
172 unsigned int i;
173
174 for (i = 0; i < ARRAY_SIZE(hva_encoders); i++) {
175 if (hva->nb_of_encoders >= HVA_MAX_ENCODERS) {
176 dev_dbg(dev,
177 "%s failed to register %s encoder (%d maximum reached)\n",
178 HVA_PREFIX, hva_encoders[i]->name,
179 HVA_MAX_ENCODERS);
180 return;
181 }
182
183 hva->encoders[hva->nb_of_encoders++] = hva_encoders[i];
184 dev_info(dev, "%s %s encoder registered\n", HVA_PREFIX,
185 hva_encoders[i]->name);
186 }
187 }
188
189 static int hva_open_encoder(struct hva_ctx *ctx, u32 streamformat,
190 u32 pixelformat, struct hva_enc **penc)
191 {
192 struct hva_dev *hva = ctx_to_hdev(ctx);
193 struct device *dev = ctx_to_dev(ctx);
194 struct hva_enc *enc;
195 int ret;
196
197 /* find an encoder which can deal with these formats */
198 enc = (struct hva_enc *)hva_find_encoder(ctx, pixelformat,
199 streamformat);
200 if (!enc) {
201 dev_err(dev, "%s no encoder found matching %4.4s => %4.4s\n",
202 ctx->name, (char *)&pixelformat, (char *)&streamformat);
203 return -EINVAL;
204 }
205
206 dev_dbg(dev, "%s one encoder matching %4.4s => %4.4s\n",
207 ctx->name, (char *)&pixelformat, (char *)&streamformat);
208
209 /* update instance name */
210 snprintf(ctx->name, sizeof(ctx->name), "[%3d:%4.4s]",
211 hva->instance_id, (char *)&streamformat);
212
213 /* open encoder instance */
214 ret = enc->open(ctx);
215 if (ret) {
216 dev_err(dev, "%s failed to open encoder instance (%d)\n",
217 ctx->name, ret);
218 return ret;
219 }
220
221 dev_dbg(dev, "%s %s encoder opened\n", ctx->name, enc->name);
222
223 *penc = enc;
224
225 return ret;
226 }
227
228 static void hva_dbg_summary(struct hva_ctx *ctx)
229 {
230 struct device *dev = ctx_to_dev(ctx);
231 struct hva_streaminfo *stream = &ctx->streaminfo;
232 struct hva_frameinfo *frame = &ctx->frameinfo;
233
234 if (!(ctx->flags & HVA_FLAG_STREAMINFO))
235 return;
236
237 dev_dbg(dev, "%s %4.4s %dx%d > %4.4s %dx%d %s %s: %d frames encoded, %d system errors, %d encoding errors, %d frame errors\n",
238 ctx->name,
239 (char *)&frame->pixelformat,
240 frame->aligned_width, frame->aligned_height,
241 (char *)&stream->streamformat,
242 stream->width, stream->height,
243 stream->profile, stream->level,
244 ctx->encoded_frames,
245 ctx->sys_errors,
246 ctx->encode_errors,
247 ctx->frame_errors);
248 }
249
250 /*
251 * V4L2 ioctl operations
252 */
253
254 static int hva_querycap(struct file *file, void *priv,
255 struct v4l2_capability *cap)
256 {
257 struct hva_ctx *ctx = fh_to_ctx(file->private_data);
258 struct hva_dev *hva = ctx_to_hdev(ctx);
259
260 strscpy(cap->driver, HVA_NAME, sizeof(cap->driver));
261 strscpy(cap->card, hva->vdev->name, sizeof(cap->card));
262 snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
263 hva->pdev->name);
264
265 return 0;
266 }
267
268 static int hva_enum_fmt_stream(struct file *file, void *priv,
269 struct v4l2_fmtdesc *f)
270 {
271 struct hva_ctx *ctx = fh_to_ctx(file->private_data);
272 struct hva_dev *hva = ctx_to_hdev(ctx);
273
274 if (unlikely(f->index >= hva->nb_of_streamformats))
275 return -EINVAL;
276
277 f->pixelformat = hva->streamformats[f->index];
278
279 return 0;
280 }
281
282 static int hva_enum_fmt_frame(struct file *file, void *priv,
283 struct v4l2_fmtdesc *f)
284 {
285 struct hva_ctx *ctx = fh_to_ctx(file->private_data);
286 struct hva_dev *hva = ctx_to_hdev(ctx);
287
288 if (unlikely(f->index >= hva->nb_of_pixelformats))
289 return -EINVAL;
290
291 f->pixelformat = hva->pixelformats[f->index];
292
293 return 0;
294 }
295
296 static int hva_g_fmt_stream(struct file *file, void *fh, struct v4l2_format *f)
297 {
298 struct hva_ctx *ctx = fh_to_ctx(file->private_data);
299 struct hva_streaminfo *streaminfo = &ctx->streaminfo;
300
301 f->fmt.pix.width = streaminfo->width;
302 f->fmt.pix.height = streaminfo->height;
303 f->fmt.pix.field = V4L2_FIELD_NONE;
304 f->fmt.pix.colorspace = ctx->colorspace;
305 f->fmt.pix.xfer_func = ctx->xfer_func;
306 f->fmt.pix.ycbcr_enc = ctx->ycbcr_enc;
307 f->fmt.pix.quantization = ctx->quantization;
308 f->fmt.pix.pixelformat = streaminfo->streamformat;
309 f->fmt.pix.bytesperline = 0;
310 f->fmt.pix.sizeimage = ctx->max_stream_size;
311
312 return 0;
313 }
314
315 static int hva_g_fmt_frame(struct file *file, void *fh, struct v4l2_format *f)
316 {
317 struct hva_ctx *ctx = fh_to_ctx(file->private_data);
318 struct hva_frameinfo *frameinfo = &ctx->frameinfo;
319
320 f->fmt.pix.width = frameinfo->width;
321 f->fmt.pix.height = frameinfo->height;
322 f->fmt.pix.field = V4L2_FIELD_NONE;
323 f->fmt.pix.colorspace = ctx->colorspace;
324 f->fmt.pix.xfer_func = ctx->xfer_func;
325 f->fmt.pix.ycbcr_enc = ctx->ycbcr_enc;
326 f->fmt.pix.quantization = ctx->quantization;
327 f->fmt.pix.pixelformat = frameinfo->pixelformat;
328 f->fmt.pix.bytesperline = frame_stride(frameinfo->aligned_width,
329 frameinfo->pixelformat);
330 f->fmt.pix.sizeimage = frameinfo->size;
331
332 return 0;
333 }
334
335 static int hva_try_fmt_stream(struct file *file, void *priv,
336 struct v4l2_format *f)
337 {
338 struct hva_ctx *ctx = fh_to_ctx(file->private_data);
339 struct device *dev = ctx_to_dev(ctx);
340 struct v4l2_pix_format *pix = &f->fmt.pix;
341 u32 streamformat = pix->pixelformat;
342 const struct hva_enc *enc;
343 u32 width, height;
344 u32 stream_size;
345
346 enc = hva_find_encoder(ctx, ctx->frameinfo.pixelformat, streamformat);
347 if (!enc) {
348 dev_dbg(dev,
349 "%s V4L2 TRY_FMT (CAPTURE): unsupported format %.4s\n",
350 ctx->name, (char *)&pix->pixelformat);
351 return -EINVAL;
352 }
353
354 width = pix->width;
355 height = pix->height;
356 if (ctx->flags & HVA_FLAG_FRAMEINFO) {
357 /*
358 * if the frame resolution is already fixed, only allow the
359 * same stream resolution
360 */
361 pix->width = ctx->frameinfo.width;
362 pix->height = ctx->frameinfo.height;
363 if ((pix->width != width) || (pix->height != height))
364 dev_dbg(dev,
365 "%s V4L2 TRY_FMT (CAPTURE): resolution updated %dx%d -> %dx%d to fit frame resolution\n",
366 ctx->name, width, height,
367 pix->width, pix->height);
368 } else {
369 /* adjust width & height */
370 v4l_bound_align_image(&pix->width,
371 HVA_MIN_WIDTH, enc->max_width,
372 0,
373 &pix->height,
374 HVA_MIN_HEIGHT, enc->max_height,
375 0,
376 0);
377
378 if ((pix->width != width) || (pix->height != height))
379 dev_dbg(dev,
380 "%s V4L2 TRY_FMT (CAPTURE): resolution updated %dx%d -> %dx%d to fit min/max/alignment\n",
381 ctx->name, width, height,
382 pix->width, pix->height);
383 }
384
385 stream_size = estimated_stream_size(pix->width, pix->height);
386 if (pix->sizeimage < stream_size)
387 pix->sizeimage = stream_size;
388
389 pix->bytesperline = 0;
390 pix->colorspace = ctx->colorspace;
391 pix->xfer_func = ctx->xfer_func;
392 pix->ycbcr_enc = ctx->ycbcr_enc;
393 pix->quantization = ctx->quantization;
394 pix->field = V4L2_FIELD_NONE;
395
396 return 0;
397 }
398
399 static int hva_try_fmt_frame(struct file *file, void *priv,
400 struct v4l2_format *f)
401 {
402 struct hva_ctx *ctx = fh_to_ctx(file->private_data);
403 struct device *dev = ctx_to_dev(ctx);
404 struct v4l2_pix_format *pix = &f->fmt.pix;
405 u32 pixelformat = pix->pixelformat;
406 const struct hva_enc *enc;
407 u32 width, height;
408
409 enc = hva_find_encoder(ctx, pixelformat, ctx->streaminfo.streamformat);
410 if (!enc) {
411 dev_dbg(dev,
412 "%s V4L2 TRY_FMT (OUTPUT): unsupported format %.4s\n",
413 ctx->name, (char *)&pixelformat);
414 return -EINVAL;
415 }
416
417 /* adjust width & height */
418 width = pix->width;
419 height = pix->height;
420 v4l_bound_align_image(&pix->width,
421 HVA_MIN_WIDTH, HVA_MAX_WIDTH,
422 frame_alignment(pixelformat) - 1,
423 &pix->height,
424 HVA_MIN_HEIGHT, HVA_MAX_HEIGHT,
425 frame_alignment(pixelformat) - 1,
426 0);
427
428 if ((pix->width != width) || (pix->height != height))
429 dev_dbg(dev,
430 "%s V4L2 TRY_FMT (OUTPUT): resolution updated %dx%d -> %dx%d to fit min/max/alignment\n",
431 ctx->name, width, height, pix->width, pix->height);
432
433 width = ALIGN(pix->width, HVA_WIDTH_ALIGNMENT);
434 height = ALIGN(pix->height, HVA_HEIGHT_ALIGNMENT);
435
436 if (!pix->colorspace) {
437 pix->colorspace = V4L2_COLORSPACE_REC709;
438 pix->xfer_func = V4L2_XFER_FUNC_DEFAULT;
439 pix->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
440 pix->quantization = V4L2_QUANTIZATION_DEFAULT;
441 }
442
443 pix->bytesperline = frame_stride(width, pixelformat);
444 pix->sizeimage = frame_size(width, height, pixelformat);
445 pix->field = V4L2_FIELD_NONE;
446
447 return 0;
448 }
449
450 static int hva_s_fmt_stream(struct file *file, void *fh, struct v4l2_format *f)
451 {
452 struct hva_ctx *ctx = fh_to_ctx(file->private_data);
453 struct device *dev = ctx_to_dev(ctx);
454 struct vb2_queue *vq;
455 int ret;
456
457 ret = hva_try_fmt_stream(file, fh, f);
458 if (ret) {
459 dev_dbg(dev, "%s V4L2 S_FMT (CAPTURE): unsupported format %.4s\n",
460 ctx->name, (char *)&f->fmt.pix.pixelformat);
461 return ret;
462 }
463
464 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
465 if (vb2_is_streaming(vq)) {
466 dev_dbg(dev, "%s V4L2 S_FMT (CAPTURE): queue busy\n",
467 ctx->name);
468 return -EBUSY;
469 }
470
471 ctx->max_stream_size = f->fmt.pix.sizeimage;
472 ctx->streaminfo.width = f->fmt.pix.width;
473 ctx->streaminfo.height = f->fmt.pix.height;
474 ctx->streaminfo.streamformat = f->fmt.pix.pixelformat;
475 ctx->flags |= HVA_FLAG_STREAMINFO;
476
477 return 0;
478 }
479
480 static int hva_s_fmt_frame(struct file *file, void *fh, struct v4l2_format *f)
481 {
482 struct hva_ctx *ctx = fh_to_ctx(file->private_data);
483 struct device *dev = ctx_to_dev(ctx);
484 struct v4l2_pix_format *pix = &f->fmt.pix;
485 struct vb2_queue *vq;
486 int ret;
487
488 ret = hva_try_fmt_frame(file, fh, f);
489 if (ret) {
490 dev_dbg(dev, "%s V4L2 S_FMT (OUTPUT): unsupported format %.4s\n",
491 ctx->name, (char *)&pix->pixelformat);
492 return ret;
493 }
494
495 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
496 if (vb2_is_streaming(vq)) {
497 dev_dbg(dev, "%s V4L2 S_FMT (OUTPUT): queue busy\n", ctx->name);
498 return -EBUSY;
499 }
500
501 ctx->colorspace = pix->colorspace;
502 ctx->xfer_func = pix->xfer_func;
503 ctx->ycbcr_enc = pix->ycbcr_enc;
504 ctx->quantization = pix->quantization;
505
506 ctx->frameinfo.aligned_width = ALIGN(pix->width, HVA_WIDTH_ALIGNMENT);
507 ctx->frameinfo.aligned_height = ALIGN(pix->height,
508 HVA_HEIGHT_ALIGNMENT);
509 ctx->frameinfo.size = pix->sizeimage;
510 ctx->frameinfo.pixelformat = pix->pixelformat;
511 ctx->frameinfo.width = pix->width;
512 ctx->frameinfo.height = pix->height;
513 ctx->flags |= HVA_FLAG_FRAMEINFO;
514
515 return 0;
516 }
517
518 static int hva_g_parm(struct file *file, void *fh, struct v4l2_streamparm *sp)
519 {
520 struct hva_ctx *ctx = fh_to_ctx(file->private_data);
521 struct v4l2_fract *time_per_frame = &ctx->ctrls.time_per_frame;
522
523 if (sp->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
524 return -EINVAL;
525
526 sp->parm.output.capability = V4L2_CAP_TIMEPERFRAME;
527 sp->parm.output.timeperframe.numerator = time_per_frame->numerator;
528 sp->parm.output.timeperframe.denominator =
529 time_per_frame->denominator;
530
531 return 0;
532 }
533
534 static int hva_s_parm(struct file *file, void *fh, struct v4l2_streamparm *sp)
535 {
536 struct hva_ctx *ctx = fh_to_ctx(file->private_data);
537 struct v4l2_fract *time_per_frame = &ctx->ctrls.time_per_frame;
538
539 if (sp->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
540 return -EINVAL;
541
542 if (!sp->parm.output.timeperframe.numerator ||
543 !sp->parm.output.timeperframe.denominator)
544 return hva_g_parm(file, fh, sp);
545
546 sp->parm.output.capability = V4L2_CAP_TIMEPERFRAME;
547 time_per_frame->numerator = sp->parm.output.timeperframe.numerator;
548 time_per_frame->denominator =
549 sp->parm.output.timeperframe.denominator;
550
551 return 0;
552 }
553
554 static int hva_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
555 {
556 struct hva_ctx *ctx = fh_to_ctx(file->private_data);
557 struct device *dev = ctx_to_dev(ctx);
558
559 if (buf->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
560 /*
561 * depending on the targeted compressed video format, the
562 * capture buffer might contain headers (e.g. H.264 SPS/PPS)
563 * filled in by the driver client; the size of these data is
564 * copied from the bytesused field of the V4L2 buffer in the
565 * payload field of the hva stream buffer
566 */
567 struct vb2_queue *vq;
568 struct hva_stream *stream;
569 struct vb2_buffer *vb2_buf;
570
571 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, buf->type);
572
573 if (buf->index >= vq->num_buffers) {
574 dev_dbg(dev, "%s buffer index %d out of range (%d)\n",
575 ctx->name, buf->index, vq->num_buffers);
576 return -EINVAL;
577 }
578
579 vb2_buf = vb2_get_buffer(vq, buf->index);
580 stream = to_hva_stream(to_vb2_v4l2_buffer(vb2_buf));
581 stream->bytesused = buf->bytesused;
582 }
583
584 return v4l2_m2m_qbuf(file, ctx->fh.m2m_ctx, buf);
585 }
586
587 /* V4L2 ioctl ops */
588 static const struct v4l2_ioctl_ops hva_ioctl_ops = {
589 .vidioc_querycap = hva_querycap,
590 .vidioc_enum_fmt_vid_cap = hva_enum_fmt_stream,
591 .vidioc_enum_fmt_vid_out = hva_enum_fmt_frame,
592 .vidioc_g_fmt_vid_cap = hva_g_fmt_stream,
593 .vidioc_g_fmt_vid_out = hva_g_fmt_frame,
594 .vidioc_try_fmt_vid_cap = hva_try_fmt_stream,
595 .vidioc_try_fmt_vid_out = hva_try_fmt_frame,
596 .vidioc_s_fmt_vid_cap = hva_s_fmt_stream,
597 .vidioc_s_fmt_vid_out = hva_s_fmt_frame,
598 .vidioc_g_parm = hva_g_parm,
599 .vidioc_s_parm = hva_s_parm,
600 .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
601 .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
602 .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
603 .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
604 .vidioc_qbuf = hva_qbuf,
605 .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
606 .vidioc_streamon = v4l2_m2m_ioctl_streamon,
607 .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
608 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
609 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
610 };
611
612 /*
613 * V4L2 control operations
614 */
615
616 static int hva_s_ctrl(struct v4l2_ctrl *ctrl)
617 {
618 struct hva_ctx *ctx = container_of(ctrl->handler, struct hva_ctx,
619 ctrl_handler);
620 struct device *dev = ctx_to_dev(ctx);
621
622 dev_dbg(dev, "%s S_CTRL: id = %d, val = %d\n", ctx->name,
623 ctrl->id, ctrl->val);
624
625 switch (ctrl->id) {
626 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
627 ctx->ctrls.bitrate_mode = ctrl->val;
628 break;
629 case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
630 ctx->ctrls.gop_size = ctrl->val;
631 break;
632 case V4L2_CID_MPEG_VIDEO_BITRATE:
633 ctx->ctrls.bitrate = ctrl->val;
634 break;
635 case V4L2_CID_MPEG_VIDEO_ASPECT:
636 ctx->ctrls.aspect = ctrl->val;
637 break;
638 case V4L2_CID_MPEG_VIDEO_H264_PROFILE:
639 ctx->ctrls.profile = ctrl->val;
640 snprintf(ctx->streaminfo.profile,
641 sizeof(ctx->streaminfo.profile),
642 "%s profile",
643 v4l2_ctrl_get_menu(ctrl->id)[ctrl->val]);
644 break;
645 case V4L2_CID_MPEG_VIDEO_H264_LEVEL:
646 ctx->ctrls.level = ctrl->val;
647 snprintf(ctx->streaminfo.level,
648 sizeof(ctx->streaminfo.level),
649 "level %s",
650 v4l2_ctrl_get_menu(ctrl->id)[ctrl->val]);
651 break;
652 case V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE:
653 ctx->ctrls.entropy_mode = ctrl->val;
654 break;
655 case V4L2_CID_MPEG_VIDEO_H264_CPB_SIZE:
656 ctx->ctrls.cpb_size = ctrl->val;
657 break;
658 case V4L2_CID_MPEG_VIDEO_H264_8X8_TRANSFORM:
659 ctx->ctrls.dct8x8 = ctrl->val;
660 break;
661 case V4L2_CID_MPEG_VIDEO_H264_MIN_QP:
662 ctx->ctrls.qpmin = ctrl->val;
663 break;
664 case V4L2_CID_MPEG_VIDEO_H264_MAX_QP:
665 ctx->ctrls.qpmax = ctrl->val;
666 break;
667 case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_ENABLE:
668 ctx->ctrls.vui_sar = ctrl->val;
669 break;
670 case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_IDC:
671 ctx->ctrls.vui_sar_idc = ctrl->val;
672 break;
673 case V4L2_CID_MPEG_VIDEO_H264_SEI_FRAME_PACKING:
674 ctx->ctrls.sei_fp = ctrl->val;
675 break;
676 case V4L2_CID_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE:
677 ctx->ctrls.sei_fp_type = ctrl->val;
678 break;
679 default:
680 dev_dbg(dev, "%s S_CTRL: invalid control (id = %d)\n",
681 ctx->name, ctrl->id);
682 return -EINVAL;
683 }
684
685 return 0;
686 }
687
688 /* V4L2 control ops */
689 static const struct v4l2_ctrl_ops hva_ctrl_ops = {
690 .s_ctrl = hva_s_ctrl,
691 };
692
693 static int hva_ctrls_setup(struct hva_ctx *ctx)
694 {
695 struct device *dev = ctx_to_dev(ctx);
696 u64 mask;
697 enum v4l2_mpeg_video_h264_sei_fp_arrangement_type sei_fp_type =
698 V4L2_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE_TOP_BOTTOM;
699
700 v4l2_ctrl_handler_init(&ctx->ctrl_handler, 15);
701
702 v4l2_ctrl_new_std_menu(&ctx->ctrl_handler, &hva_ctrl_ops,
703 V4L2_CID_MPEG_VIDEO_BITRATE_MODE,
704 V4L2_MPEG_VIDEO_BITRATE_MODE_CBR,
705 0,
706 V4L2_MPEG_VIDEO_BITRATE_MODE_CBR);
707
708 v4l2_ctrl_new_std(&ctx->ctrl_handler, &hva_ctrl_ops,
709 V4L2_CID_MPEG_VIDEO_GOP_SIZE,
710 1, 60, 1, 16);
711
712 v4l2_ctrl_new_std(&ctx->ctrl_handler, &hva_ctrl_ops,
713 V4L2_CID_MPEG_VIDEO_BITRATE,
714 1000, 60000000, 1000, 20000000);
715
716 mask = ~(1 << V4L2_MPEG_VIDEO_ASPECT_1x1);
717 v4l2_ctrl_new_std_menu(&ctx->ctrl_handler, &hva_ctrl_ops,
718 V4L2_CID_MPEG_VIDEO_ASPECT,
719 V4L2_MPEG_VIDEO_ASPECT_1x1,
720 mask,
721 V4L2_MPEG_VIDEO_ASPECT_1x1);
722
723 mask = ~((1 << V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE) |
724 (1 << V4L2_MPEG_VIDEO_H264_PROFILE_MAIN) |
725 (1 << V4L2_MPEG_VIDEO_H264_PROFILE_HIGH) |
726 (1 << V4L2_MPEG_VIDEO_H264_PROFILE_STEREO_HIGH));
727 v4l2_ctrl_new_std_menu(&ctx->ctrl_handler, &hva_ctrl_ops,
728 V4L2_CID_MPEG_VIDEO_H264_PROFILE,
729 V4L2_MPEG_VIDEO_H264_PROFILE_STEREO_HIGH,
730 mask,
731 V4L2_MPEG_VIDEO_H264_PROFILE_HIGH);
732
733 v4l2_ctrl_new_std_menu(&ctx->ctrl_handler, &hva_ctrl_ops,
734 V4L2_CID_MPEG_VIDEO_H264_LEVEL,
735 V4L2_MPEG_VIDEO_H264_LEVEL_4_2,
736 0,
737 V4L2_MPEG_VIDEO_H264_LEVEL_4_0);
738
739 v4l2_ctrl_new_std_menu(&ctx->ctrl_handler, &hva_ctrl_ops,
740 V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE,
741 V4L2_MPEG_VIDEO_H264_ENTROPY_MODE_CABAC,
742 0,
743 V4L2_MPEG_VIDEO_H264_ENTROPY_MODE_CAVLC);
744
745 v4l2_ctrl_new_std(&ctx->ctrl_handler, &hva_ctrl_ops,
746 V4L2_CID_MPEG_VIDEO_H264_CPB_SIZE,
747 1, 10000, 1, 3000);
748
749 v4l2_ctrl_new_std(&ctx->ctrl_handler, &hva_ctrl_ops,
750 V4L2_CID_MPEG_VIDEO_H264_8X8_TRANSFORM,
751 0, 1, 1, 0);
752
753 v4l2_ctrl_new_std(&ctx->ctrl_handler, &hva_ctrl_ops,
754 V4L2_CID_MPEG_VIDEO_H264_MIN_QP,
755 0, 51, 1, 5);
756
757 v4l2_ctrl_new_std(&ctx->ctrl_handler, &hva_ctrl_ops,
758 V4L2_CID_MPEG_VIDEO_H264_MAX_QP,
759 0, 51, 1, 51);
760
761 v4l2_ctrl_new_std(&ctx->ctrl_handler, &hva_ctrl_ops,
762 V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_ENABLE,
763 0, 1, 1, 1);
764
765 mask = ~(1 << V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_1x1);
766 v4l2_ctrl_new_std_menu(&ctx->ctrl_handler, &hva_ctrl_ops,
767 V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_IDC,
768 V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_1x1,
769 mask,
770 V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_1x1);
771
772 v4l2_ctrl_new_std(&ctx->ctrl_handler, &hva_ctrl_ops,
773 V4L2_CID_MPEG_VIDEO_H264_SEI_FRAME_PACKING,
774 0, 1, 1, 0);
775
776 mask = ~(1 << sei_fp_type);
777 v4l2_ctrl_new_std_menu(&ctx->ctrl_handler, &hva_ctrl_ops,
778 V4L2_CID_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE,
779 sei_fp_type,
780 mask,
781 sei_fp_type);
782
783 if (ctx->ctrl_handler.error) {
784 int err = ctx->ctrl_handler.error;
785
786 dev_dbg(dev, "%s controls setup failed (%d)\n",
787 ctx->name, err);
788 v4l2_ctrl_handler_free(&ctx->ctrl_handler);
789 return err;
790 }
791
792 v4l2_ctrl_handler_setup(&ctx->ctrl_handler);
793
794 /* set default time per frame */
795 ctx->ctrls.time_per_frame.numerator = HVA_DEFAULT_FRAME_NUM;
796 ctx->ctrls.time_per_frame.denominator = HVA_DEFAULT_FRAME_DEN;
797
798 return 0;
799 }
800
801 /*
802 * mem-to-mem operations
803 */
804
805 static void hva_run_work(struct work_struct *work)
806 {
807 struct hva_ctx *ctx = container_of(work, struct hva_ctx, run_work);
808 struct vb2_v4l2_buffer *src_buf, *dst_buf;
809 const struct hva_enc *enc = ctx->enc;
810 struct hva_frame *frame;
811 struct hva_stream *stream;
812 int ret;
813
814 /* protect instance against reentrancy */
815 mutex_lock(&ctx->lock);
816
817 #ifdef CONFIG_VIDEO_STI_HVA_DEBUGFS
818 hva_dbg_perf_begin(ctx);
819 #endif
820
821 src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
822 dst_buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
823
824 frame = to_hva_frame(src_buf);
825 stream = to_hva_stream(dst_buf);
826 frame->vbuf.sequence = ctx->frame_num++;
827
828 ret = enc->encode(ctx, frame, stream);
829
830 vb2_set_plane_payload(&dst_buf->vb2_buf, 0, stream->bytesused);
831 if (ret) {
832 v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_ERROR);
833 v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_ERROR);
834 } else {
835 /* propagate frame timestamp */
836 dst_buf->vb2_buf.timestamp = src_buf->vb2_buf.timestamp;
837 dst_buf->field = V4L2_FIELD_NONE;
838 dst_buf->sequence = ctx->stream_num - 1;
839
840 ctx->encoded_frames++;
841
842 #ifdef CONFIG_VIDEO_STI_HVA_DEBUGFS
843 hva_dbg_perf_end(ctx, stream);
844 #endif
845
846 v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
847 v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE);
848 }
849
850 mutex_unlock(&ctx->lock);
851
852 v4l2_m2m_job_finish(ctx->hva_dev->m2m_dev, ctx->fh.m2m_ctx);
853 }
854
855 static void hva_device_run(void *priv)
856 {
857 struct hva_ctx *ctx = priv;
858 struct hva_dev *hva = ctx_to_hdev(ctx);
859
860 queue_work(hva->work_queue, &ctx->run_work);
861 }
862
863 static void hva_job_abort(void *priv)
864 {
865 struct hva_ctx *ctx = priv;
866 struct device *dev = ctx_to_dev(ctx);
867
868 dev_dbg(dev, "%s aborting job\n", ctx->name);
869
870 ctx->aborting = true;
871 }
872
873 static int hva_job_ready(void *priv)
874 {
875 struct hva_ctx *ctx = priv;
876 struct device *dev = ctx_to_dev(ctx);
877
878 if (!v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx)) {
879 dev_dbg(dev, "%s job not ready: no frame buffers\n",
880 ctx->name);
881 return 0;
882 }
883
884 if (!v4l2_m2m_num_dst_bufs_ready(ctx->fh.m2m_ctx)) {
885 dev_dbg(dev, "%s job not ready: no stream buffers\n",
886 ctx->name);
887 return 0;
888 }
889
890 if (ctx->aborting) {
891 dev_dbg(dev, "%s job not ready: aborting\n", ctx->name);
892 return 0;
893 }
894
895 return 1;
896 }
897
898 /* mem-to-mem ops */
899 static const struct v4l2_m2m_ops hva_m2m_ops = {
900 .device_run = hva_device_run,
901 .job_abort = hva_job_abort,
902 .job_ready = hva_job_ready,
903 };
904
905 /*
906 * VB2 queue operations
907 */
908
909 static int hva_queue_setup(struct vb2_queue *vq,
910 unsigned int *num_buffers, unsigned int *num_planes,
911 unsigned int sizes[], struct device *alloc_devs[])
912 {
913 struct hva_ctx *ctx = vb2_get_drv_priv(vq);
914 struct device *dev = ctx_to_dev(ctx);
915 unsigned int size;
916
917 dev_dbg(dev, "%s %s queue setup: num_buffers %d\n", ctx->name,
918 to_type_str(vq->type), *num_buffers);
919
920 size = vq->type == V4L2_BUF_TYPE_VIDEO_OUTPUT ?
921 ctx->frameinfo.size : ctx->max_stream_size;
922
923 if (*num_planes)
924 return sizes[0] < size ? -EINVAL : 0;
925
926 /* only one plane supported */
927 *num_planes = 1;
928 sizes[0] = size;
929
930 return 0;
931 }
932
933 static int hva_buf_prepare(struct vb2_buffer *vb)
934 {
935 struct hva_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
936 struct device *dev = ctx_to_dev(ctx);
937 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
938
939 if (vb->vb2_queue->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
940 struct hva_frame *frame = to_hva_frame(vbuf);
941
942 if (vbuf->field == V4L2_FIELD_ANY)
943 vbuf->field = V4L2_FIELD_NONE;
944 if (vbuf->field != V4L2_FIELD_NONE) {
945 dev_dbg(dev,
946 "%s frame[%d] prepare: %d field not supported\n",
947 ctx->name, vb->index, vbuf->field);
948 return -EINVAL;
949 }
950
951 if (!frame->prepared) {
952 /* get memory addresses */
953 frame->vaddr = vb2_plane_vaddr(&vbuf->vb2_buf, 0);
954 frame->paddr = vb2_dma_contig_plane_dma_addr(
955 &vbuf->vb2_buf, 0);
956 frame->info = ctx->frameinfo;
957 frame->prepared = true;
958
959 dev_dbg(dev,
960 "%s frame[%d] prepared; virt=%p, phy=%pad\n",
961 ctx->name, vb->index,
962 frame->vaddr, &frame->paddr);
963 }
964 } else {
965 struct hva_stream *stream = to_hva_stream(vbuf);
966
967 if (!stream->prepared) {
968 /* get memory addresses */
969 stream->vaddr = vb2_plane_vaddr(&vbuf->vb2_buf, 0);
970 stream->paddr = vb2_dma_contig_plane_dma_addr(
971 &vbuf->vb2_buf, 0);
972 stream->size = vb2_plane_size(&vbuf->vb2_buf, 0);
973 stream->prepared = true;
974
975 dev_dbg(dev,
976 "%s stream[%d] prepared; virt=%p, phy=%pad\n",
977 ctx->name, vb->index,
978 stream->vaddr, &stream->paddr);
979 }
980 }
981
982 return 0;
983 }
984
985 static void hva_buf_queue(struct vb2_buffer *vb)
986 {
987 struct hva_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
988 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
989
990 if (ctx->fh.m2m_ctx)
991 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
992 }
993
994 static int hva_start_streaming(struct vb2_queue *vq, unsigned int count)
995 {
996 struct hva_ctx *ctx = vb2_get_drv_priv(vq);
997 struct hva_dev *hva = ctx_to_hdev(ctx);
998 struct device *dev = ctx_to_dev(ctx);
999 struct vb2_v4l2_buffer *vbuf;
1000 int ret;
1001 unsigned int i;
1002 bool found = false;
1003
1004 dev_dbg(dev, "%s %s start streaming\n", ctx->name,
1005 to_type_str(vq->type));
1006
1007 /* open encoder when both start_streaming have been called */
1008 if (V4L2_TYPE_IS_OUTPUT(vq->type)) {
1009 if (!vb2_start_streaming_called(&ctx->fh.m2m_ctx->cap_q_ctx.q))
1010 return 0;
1011 } else {
1012 if (!vb2_start_streaming_called(&ctx->fh.m2m_ctx->out_q_ctx.q))
1013 return 0;
1014 }
1015
1016 /* store the instance context in the instances array */
1017 for (i = 0; i < HVA_MAX_INSTANCES; i++) {
1018 if (!hva->instances[i]) {
1019 hva->instances[i] = ctx;
1020 /* save the context identifier in the context */
1021 ctx->id = i;
1022 found = true;
1023 break;
1024 }
1025 }
1026
1027 if (!found) {
1028 dev_err(dev, "%s maximum instances reached\n", ctx->name);
1029 ret = -ENOMEM;
1030 goto err;
1031 }
1032
1033 hva->nb_of_instances++;
1034
1035 if (!ctx->enc) {
1036 ret = hva_open_encoder(ctx,
1037 ctx->streaminfo.streamformat,
1038 ctx->frameinfo.pixelformat,
1039 &ctx->enc);
1040 if (ret < 0)
1041 goto err_ctx;
1042 }
1043
1044 return 0;
1045
1046 err_ctx:
1047 hva->instances[ctx->id] = NULL;
1048 hva->nb_of_instances--;
1049 err:
1050 if (vq->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1051 /* return of all pending buffers to vb2 (in queued state) */
1052 while ((vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx)))
1053 v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_QUEUED);
1054 } else {
1055 /* return of all pending buffers to vb2 (in queued state) */
1056 while ((vbuf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx)))
1057 v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_QUEUED);
1058 }
1059
1060 ctx->sys_errors++;
1061
1062 return ret;
1063 }
1064
1065 static void hva_stop_streaming(struct vb2_queue *vq)
1066 {
1067 struct hva_ctx *ctx = vb2_get_drv_priv(vq);
1068 struct hva_dev *hva = ctx_to_hdev(ctx);
1069 struct device *dev = ctx_to_dev(ctx);
1070 const struct hva_enc *enc = ctx->enc;
1071 struct vb2_v4l2_buffer *vbuf;
1072
1073 dev_dbg(dev, "%s %s stop streaming\n", ctx->name,
1074 to_type_str(vq->type));
1075
1076 if (vq->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1077 /* return of all pending buffers to vb2 (in error state) */
1078 ctx->frame_num = 0;
1079 while ((vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx)))
1080 v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_ERROR);
1081 } else {
1082 /* return of all pending buffers to vb2 (in error state) */
1083 ctx->stream_num = 0;
1084 while ((vbuf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx)))
1085 v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_ERROR);
1086 }
1087
1088 if ((V4L2_TYPE_IS_OUTPUT(vq->type) &&
1089 vb2_is_streaming(&ctx->fh.m2m_ctx->cap_q_ctx.q)) ||
1090 (V4L2_TYPE_IS_CAPTURE(vq->type) &&
1091 vb2_is_streaming(&ctx->fh.m2m_ctx->out_q_ctx.q))) {
1092 dev_dbg(dev, "%s %s out=%d cap=%d\n",
1093 ctx->name, to_type_str(vq->type),
1094 vb2_is_streaming(&ctx->fh.m2m_ctx->out_q_ctx.q),
1095 vb2_is_streaming(&ctx->fh.m2m_ctx->cap_q_ctx.q));
1096 return;
1097 }
1098
1099 /* close encoder when both stop_streaming have been called */
1100 if (enc) {
1101 dev_dbg(dev, "%s %s encoder closed\n", ctx->name, enc->name);
1102 enc->close(ctx);
1103 ctx->enc = NULL;
1104
1105 /* clear instance context in instances array */
1106 hva->instances[ctx->id] = NULL;
1107 hva->nb_of_instances--;
1108 }
1109
1110 ctx->aborting = false;
1111 }
1112
1113 /* VB2 queue ops */
1114 static const struct vb2_ops hva_qops = {
1115 .queue_setup = hva_queue_setup,
1116 .buf_prepare = hva_buf_prepare,
1117 .buf_queue = hva_buf_queue,
1118 .start_streaming = hva_start_streaming,
1119 .stop_streaming = hva_stop_streaming,
1120 .wait_prepare = vb2_ops_wait_prepare,
1121 .wait_finish = vb2_ops_wait_finish,
1122 };
1123
1124 /*
1125 * V4L2 file operations
1126 */
1127
1128 static int queue_init(struct hva_ctx *ctx, struct vb2_queue *vq)
1129 {
1130 vq->io_modes = VB2_MMAP | VB2_DMABUF;
1131 vq->drv_priv = ctx;
1132 vq->ops = &hva_qops;
1133 vq->mem_ops = &vb2_dma_contig_memops;
1134 vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
1135 vq->lock = &ctx->hva_dev->lock;
1136
1137 return vb2_queue_init(vq);
1138 }
1139
1140 static int hva_queue_init(void *priv, struct vb2_queue *src_vq,
1141 struct vb2_queue *dst_vq)
1142 {
1143 struct hva_ctx *ctx = priv;
1144 int ret;
1145
1146 src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1147 src_vq->buf_struct_size = sizeof(struct hva_frame);
1148 src_vq->min_buffers_needed = MIN_FRAMES;
1149 src_vq->dev = ctx->hva_dev->dev;
1150
1151 ret = queue_init(ctx, src_vq);
1152 if (ret)
1153 return ret;
1154
1155 dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1156 dst_vq->buf_struct_size = sizeof(struct hva_stream);
1157 dst_vq->min_buffers_needed = MIN_STREAMS;
1158 dst_vq->dev = ctx->hva_dev->dev;
1159
1160 return queue_init(ctx, dst_vq);
1161 }
1162
1163 static int hva_open(struct file *file)
1164 {
1165 struct hva_dev *hva = video_drvdata(file);
1166 struct device *dev = hva_to_dev(hva);
1167 struct hva_ctx *ctx;
1168 int ret;
1169
1170 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
1171 if (!ctx) {
1172 ret = -ENOMEM;
1173 goto out;
1174 }
1175 ctx->hva_dev = hva;
1176
1177 INIT_WORK(&ctx->run_work, hva_run_work);
1178 v4l2_fh_init(&ctx->fh, video_devdata(file));
1179 file->private_data = &ctx->fh;
1180 v4l2_fh_add(&ctx->fh);
1181
1182 ret = hva_ctrls_setup(ctx);
1183 if (ret) {
1184 dev_err(dev, "%s [x:x] failed to setup controls\n",
1185 HVA_PREFIX);
1186 ctx->sys_errors++;
1187 goto err_fh;
1188 }
1189 ctx->fh.ctrl_handler = &ctx->ctrl_handler;
1190
1191 mutex_init(&ctx->lock);
1192
1193 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(hva->m2m_dev, ctx,
1194 &hva_queue_init);
1195 if (IS_ERR(ctx->fh.m2m_ctx)) {
1196 ret = PTR_ERR(ctx->fh.m2m_ctx);
1197 dev_err(dev, "%s failed to initialize m2m context (%d)\n",
1198 HVA_PREFIX, ret);
1199 ctx->sys_errors++;
1200 goto err_ctrls;
1201 }
1202
1203 /* set the instance name */
1204 mutex_lock(&hva->lock);
1205 hva->instance_id++;
1206 snprintf(ctx->name, sizeof(ctx->name), "[%3d:----]",
1207 hva->instance_id);
1208 mutex_unlock(&hva->lock);
1209
1210 /* default parameters for frame and stream */
1211 set_default_params(ctx);
1212
1213 #ifdef CONFIG_VIDEO_STI_HVA_DEBUGFS
1214 hva_dbg_ctx_create(ctx);
1215 #endif
1216
1217 dev_info(dev, "%s encoder instance created\n", ctx->name);
1218
1219 return 0;
1220
1221 err_ctrls:
1222 v4l2_ctrl_handler_free(&ctx->ctrl_handler);
1223 err_fh:
1224 v4l2_fh_del(&ctx->fh);
1225 v4l2_fh_exit(&ctx->fh);
1226 kfree(ctx);
1227 out:
1228 return ret;
1229 }
1230
1231 static int hva_release(struct file *file)
1232 {
1233 struct hva_ctx *ctx = fh_to_ctx(file->private_data);
1234 struct hva_dev *hva = ctx_to_hdev(ctx);
1235 struct device *dev = ctx_to_dev(ctx);
1236 const struct hva_enc *enc = ctx->enc;
1237
1238 if (enc) {
1239 dev_dbg(dev, "%s %s encoder closed\n", ctx->name, enc->name);
1240 enc->close(ctx);
1241 ctx->enc = NULL;
1242
1243 /* clear instance context in instances array */
1244 hva->instances[ctx->id] = NULL;
1245 hva->nb_of_instances--;
1246 }
1247
1248 /* trace a summary of instance before closing (debug purpose) */
1249 hva_dbg_summary(ctx);
1250
1251 v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
1252
1253 v4l2_ctrl_handler_free(&ctx->ctrl_handler);
1254
1255 v4l2_fh_del(&ctx->fh);
1256 v4l2_fh_exit(&ctx->fh);
1257
1258 #ifdef CONFIG_VIDEO_STI_HVA_DEBUGFS
1259 hva_dbg_ctx_remove(ctx);
1260 #endif
1261
1262 dev_info(dev, "%s encoder instance released\n", ctx->name);
1263
1264 kfree(ctx);
1265
1266 return 0;
1267 }
1268
1269 /* V4L2 file ops */
1270 static const struct v4l2_file_operations hva_fops = {
1271 .owner = THIS_MODULE,
1272 .open = hva_open,
1273 .release = hva_release,
1274 .unlocked_ioctl = video_ioctl2,
1275 .mmap = v4l2_m2m_fop_mmap,
1276 .poll = v4l2_m2m_fop_poll,
1277 };
1278
1279 /*
1280 * Platform device operations
1281 */
1282
1283 static int hva_register_device(struct hva_dev *hva)
1284 {
1285 int ret;
1286 struct video_device *vdev;
1287 struct device *dev;
1288
1289 if (!hva)
1290 return -ENODEV;
1291 dev = hva_to_dev(hva);
1292
1293 hva->m2m_dev = v4l2_m2m_init(&hva_m2m_ops);
1294 if (IS_ERR(hva->m2m_dev)) {
1295 dev_err(dev, "%s failed to initialize v4l2-m2m device\n",
1296 HVA_PREFIX);
1297 ret = PTR_ERR(hva->m2m_dev);
1298 goto err;
1299 }
1300
1301 vdev = video_device_alloc();
1302 if (!vdev) {
1303 dev_err(dev, "%s failed to allocate video device\n",
1304 HVA_PREFIX);
1305 ret = -ENOMEM;
1306 goto err_m2m_release;
1307 }
1308
1309 vdev->fops = &hva_fops;
1310 vdev->ioctl_ops = &hva_ioctl_ops;
1311 vdev->release = video_device_release;
1312 vdev->lock = &hva->lock;
1313 vdev->vfl_dir = VFL_DIR_M2M;
1314 vdev->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_M2M;
1315 vdev->v4l2_dev = &hva->v4l2_dev;
1316 snprintf(vdev->name, sizeof(vdev->name), "%s%lx", HVA_NAME,
1317 hva->ip_version);
1318
1319 ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
1320 if (ret) {
1321 dev_err(dev, "%s failed to register video device\n",
1322 HVA_PREFIX);
1323 goto err_vdev_release;
1324 }
1325
1326 hva->vdev = vdev;
1327 video_set_drvdata(vdev, hva);
1328 return 0;
1329
1330 err_vdev_release:
1331 video_device_release(vdev);
1332 err_m2m_release:
1333 v4l2_m2m_release(hva->m2m_dev);
1334 err:
1335 return ret;
1336 }
1337
1338 static void hva_unregister_device(struct hva_dev *hva)
1339 {
1340 if (!hva)
1341 return;
1342
1343 if (hva->m2m_dev)
1344 v4l2_m2m_release(hva->m2m_dev);
1345
1346 video_unregister_device(hva->vdev);
1347 }
1348
1349 static int hva_probe(struct platform_device *pdev)
1350 {
1351 struct hva_dev *hva;
1352 struct device *dev = &pdev->dev;
1353 int ret;
1354
1355 hva = devm_kzalloc(dev, sizeof(*hva), GFP_KERNEL);
1356 if (!hva) {
1357 ret = -ENOMEM;
1358 goto err;
1359 }
1360
1361 ret = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(32));
1362 if (ret)
1363 return ret;
1364
1365 hva->dev = dev;
1366 hva->pdev = pdev;
1367 platform_set_drvdata(pdev, hva);
1368
1369 mutex_init(&hva->lock);
1370
1371 /* probe hardware */
1372 ret = hva_hw_probe(pdev, hva);
1373 if (ret)
1374 goto err;
1375
1376 /* register all available encoders */
1377 register_encoders(hva);
1378
1379 /* register all supported formats */
1380 register_formats(hva);
1381
1382 /* register on V4L2 */
1383 ret = v4l2_device_register(dev, &hva->v4l2_dev);
1384 if (ret) {
1385 dev_err(dev, "%s %s failed to register V4L2 device\n",
1386 HVA_PREFIX, HVA_NAME);
1387 goto err_hw;
1388 }
1389
1390 #ifdef CONFIG_VIDEO_STI_HVA_DEBUGFS
1391 hva_debugfs_create(hva);
1392 #endif
1393
1394 hva->work_queue = create_workqueue(HVA_NAME);
1395 if (!hva->work_queue) {
1396 dev_err(dev, "%s %s failed to allocate work queue\n",
1397 HVA_PREFIX, HVA_NAME);
1398 ret = -ENOMEM;
1399 goto err_v4l2;
1400 }
1401
1402 /* register device */
1403 ret = hva_register_device(hva);
1404 if (ret)
1405 goto err_work_queue;
1406
1407 dev_info(dev, "%s %s registered as /dev/video%d\n", HVA_PREFIX,
1408 HVA_NAME, hva->vdev->num);
1409
1410 return 0;
1411
1412 err_work_queue:
1413 destroy_workqueue(hva->work_queue);
1414 err_v4l2:
1415 #ifdef CONFIG_VIDEO_STI_HVA_DEBUGFS
1416 hva_debugfs_remove(hva);
1417 #endif
1418 v4l2_device_unregister(&hva->v4l2_dev);
1419 err_hw:
1420 hva_hw_remove(hva);
1421 err:
1422 return ret;
1423 }
1424
1425 static int hva_remove(struct platform_device *pdev)
1426 {
1427 struct hva_dev *hva = platform_get_drvdata(pdev);
1428 struct device *dev = hva_to_dev(hva);
1429
1430 hva_unregister_device(hva);
1431
1432 destroy_workqueue(hva->work_queue);
1433
1434 hva_hw_remove(hva);
1435
1436 #ifdef CONFIG_VIDEO_STI_HVA_DEBUGFS
1437 hva_debugfs_remove(hva);
1438 #endif
1439
1440 v4l2_device_unregister(&hva->v4l2_dev);
1441
1442 dev_info(dev, "%s %s removed\n", HVA_PREFIX, pdev->name);
1443
1444 return 0;
1445 }
1446
1447 /* PM ops */
1448 static const struct dev_pm_ops hva_pm_ops = {
1449 .runtime_suspend = hva_hw_runtime_suspend,
1450 .runtime_resume = hva_hw_runtime_resume,
1451 };
1452
1453 static const struct of_device_id hva_match_types[] = {
1454 {
1455 .compatible = "st,st-hva",
1456 },
1457 { /* end node */ }
1458 };
1459
1460 MODULE_DEVICE_TABLE(of, hva_match_types);
1461
1462 static struct platform_driver hva_driver = {
1463 .probe = hva_probe,
1464 .remove = hva_remove,
1465 .driver = {
1466 .name = HVA_NAME,
1467 .of_match_table = hva_match_types,
1468 .pm = &hva_pm_ops,
1469 },
1470 };
1471
1472 module_platform_driver(hva_driver);
1473
1474 MODULE_LICENSE("GPL");
1475 MODULE_AUTHOR("Yannick Fertre <yannick.fertre@st.com>");
1476 MODULE_DESCRIPTION("STMicroelectronics HVA video encoder V4L2 driver");
Linux with added FPC-III support