1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (C) 2018 BayLibre, SAS
4 * Author: Maxime Jourdan <mjourdan@baylibre.com>
5 */
6
7 #include <linux/of.h>
8 #include <linux/clk.h>
9 #include <linux/io.h>
10 #include <linux/module.h>
11 #include <linux/platform_device.h>
12 #include <linux/mfd/syscon.h>
13 #include <linux/slab.h>
14 #include <linux/interrupt.h>
15 #include <linux/kthread.h>
16 #include <media/v4l2-ioctl.h>
17 #include <media/v4l2-event.h>
18 #include <media/v4l2-ctrls.h>
19 #include <media/v4l2-mem2mem.h>
20 #include <media/v4l2-dev.h>
21 #include <media/videobuf2-dma-contig.h>
22
23 #include "vdec.h"
24 #include "esparser.h"
25 #include "vdec_helpers.h"
26
27 struct dummy_buf {
28 struct vb2_v4l2_buffer vb;
29 struct list_head list;
30 };
31
32 /* 16 MiB for parsed bitstream swap exchange */
33 #define SIZE_VIFIFO SZ_16M
34
get_output_size(u32 width,u32 height)35 static u32 get_output_size(u32 width, u32 height)
36 {
37 return ALIGN(width * height, SZ_64K);
38 }
39
amvdec_get_output_size(struct amvdec_session * sess)40 u32 amvdec_get_output_size(struct amvdec_session *sess)
41 {
42 return get_output_size(sess->width, sess->height);
43 }
44 EXPORT_SYMBOL_GPL(amvdec_get_output_size);
45
vdec_codec_needs_recycle(struct amvdec_session * sess)46 static int vdec_codec_needs_recycle(struct amvdec_session *sess)
47 {
48 struct amvdec_codec_ops *codec_ops = sess->fmt_out->codec_ops;
49
50 return codec_ops->can_recycle && codec_ops->recycle;
51 }
52
vdec_recycle_thread(void * data)53 static int vdec_recycle_thread(void *data)
54 {
55 struct amvdec_session *sess = data;
56 struct amvdec_core *core = sess->core;
57 struct amvdec_codec_ops *codec_ops = sess->fmt_out->codec_ops;
58 struct amvdec_buffer *tmp, *n;
59
60 while (!kthread_should_stop()) {
61 mutex_lock(&sess->bufs_recycle_lock);
62 list_for_each_entry_safe(tmp, n, &sess->bufs_recycle, list) {
63 if (!codec_ops->can_recycle(core))
64 break;
65
66 codec_ops->recycle(core, tmp->vb->index);
67 list_del(&tmp->list);
68 kfree(tmp);
69 }
70 mutex_unlock(&sess->bufs_recycle_lock);
71
72 usleep_range(5000, 10000);
73 }
74
75 return 0;
76 }
77
vdec_poweron(struct amvdec_session * sess)78 static int vdec_poweron(struct amvdec_session *sess)
79 {
80 int ret;
81 struct amvdec_ops *vdec_ops = sess->fmt_out->vdec_ops;
82
83 ret = clk_prepare_enable(sess->core->dos_parser_clk);
84 if (ret)
85 return ret;
86
87 ret = clk_prepare_enable(sess->core->dos_clk);
88 if (ret)
89 goto disable_dos_parser;
90
91 ret = vdec_ops->start(sess);
92 if (ret)
93 goto disable_dos;
94
95 esparser_power_up(sess);
96
97 return 0;
98
99 disable_dos:
100 clk_disable_unprepare(sess->core->dos_clk);
101 disable_dos_parser:
102 clk_disable_unprepare(sess->core->dos_parser_clk);
103
104 return ret;
105 }
106
vdec_wait_inactive(struct amvdec_session * sess)107 static void vdec_wait_inactive(struct amvdec_session *sess)
108 {
109 /* We consider 50ms with no IRQ to be inactive. */
110 while (time_is_after_jiffies64(sess->last_irq_jiffies +
111 msecs_to_jiffies(50)))
112 msleep(25);
113 }
114
vdec_poweroff(struct amvdec_session * sess)115 static void vdec_poweroff(struct amvdec_session *sess)
116 {
117 struct amvdec_ops *vdec_ops = sess->fmt_out->vdec_ops;
118 struct amvdec_codec_ops *codec_ops = sess->fmt_out->codec_ops;
119
120 sess->should_stop = 1;
121 vdec_wait_inactive(sess);
122 if (codec_ops->drain)
123 codec_ops->drain(sess);
124
125 vdec_ops->stop(sess);
126 clk_disable_unprepare(sess->core->dos_clk);
127 clk_disable_unprepare(sess->core->dos_parser_clk);
128 }
129
130 static void
vdec_queue_recycle(struct amvdec_session * sess,struct vb2_buffer * vb)131 vdec_queue_recycle(struct amvdec_session *sess, struct vb2_buffer *vb)
132 {
133 struct amvdec_buffer *new_buf;
134
135 new_buf = kmalloc(sizeof(*new_buf), GFP_KERNEL);
136 if (!new_buf)
137 return;
138 new_buf->vb = vb;
139
140 mutex_lock(&sess->bufs_recycle_lock);
141 list_add_tail(&new_buf->list, &sess->bufs_recycle);
142 mutex_unlock(&sess->bufs_recycle_lock);
143 }
144
vdec_m2m_device_run(void * priv)145 static void vdec_m2m_device_run(void *priv)
146 {
147 struct amvdec_session *sess = priv;
148
149 schedule_work(&sess->esparser_queue_work);
150 }
151
vdec_m2m_job_abort(void * priv)152 static void vdec_m2m_job_abort(void *priv)
153 {
154 struct amvdec_session *sess = priv;
155
156 v4l2_m2m_job_finish(sess->m2m_dev, sess->m2m_ctx);
157 }
158
159 static const struct v4l2_m2m_ops vdec_m2m_ops = {
160 .device_run = vdec_m2m_device_run,
161 .job_abort = vdec_m2m_job_abort,
162 };
163
process_num_buffers(struct vb2_queue * q,struct amvdec_session * sess,unsigned int * num_buffers,bool is_reqbufs)164 static void process_num_buffers(struct vb2_queue *q,
165 struct amvdec_session *sess,
166 unsigned int *num_buffers,
167 bool is_reqbufs)
168 {
169 const struct amvdec_format *fmt_out = sess->fmt_out;
170 unsigned int buffers_total = q->num_buffers + *num_buffers;
171 u32 min_buf_capture = v4l2_ctrl_g_ctrl(sess->ctrl_min_buf_capture);
172
173 if (q->num_buffers + *num_buffers < min_buf_capture)
174 *num_buffers = min_buf_capture - q->num_buffers;
175 if (is_reqbufs && buffers_total < fmt_out->min_buffers)
176 *num_buffers = fmt_out->min_buffers - q->num_buffers;
177 if (buffers_total > fmt_out->max_buffers)
178 *num_buffers = fmt_out->max_buffers - q->num_buffers;
179
180 /* We need to program the complete CAPTURE buffer list
181 * in registers during start_streaming, and the firmwares
182 * are free to choose any of them to write frames to. As such,
183 * we need all of them to be queued into the driver
184 */
185 sess->num_dst_bufs = q->num_buffers + *num_buffers;
186 q->min_buffers_needed = max(fmt_out->min_buffers, sess->num_dst_bufs);
187 }
188
vdec_queue_setup(struct vb2_queue * q,unsigned int * num_buffers,unsigned int * num_planes,unsigned int sizes[],struct device * alloc_devs[])189 static int vdec_queue_setup(struct vb2_queue *q, unsigned int *num_buffers,
190 unsigned int *num_planes, unsigned int sizes[],
191 struct device *alloc_devs[])
192 {
193 struct amvdec_session *sess = vb2_get_drv_priv(q);
194 u32 output_size = amvdec_get_output_size(sess);
195
196 if (*num_planes) {
197 switch (q->type) {
198 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
199 if (*num_planes != 1 ||
200 sizes[0] < sess->src_buffer_size)
201 return -EINVAL;
202 break;
203 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
204 switch (sess->pixfmt_cap) {
205 case V4L2_PIX_FMT_NV12M:
206 if (*num_planes != 2 ||
207 sizes[0] < output_size ||
208 sizes[1] < output_size / 2)
209 return -EINVAL;
210 break;
211 case V4L2_PIX_FMT_YUV420M:
212 if (*num_planes != 3 ||
213 sizes[0] < output_size ||
214 sizes[1] < output_size / 4 ||
215 sizes[2] < output_size / 4)
216 return -EINVAL;
217 break;
218 default:
219 return -EINVAL;
220 }
221
222 process_num_buffers(q, sess, num_buffers, false);
223 break;
224 }
225
226 return 0;
227 }
228
229 switch (q->type) {
230 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
231 sizes[0] = sess->src_buffer_size;
232 *num_planes = 1;
233 break;
234 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
235 switch (sess->pixfmt_cap) {
236 case V4L2_PIX_FMT_NV12M:
237 sizes[0] = output_size;
238 sizes[1] = output_size / 2;
239 *num_planes = 2;
240 break;
241 case V4L2_PIX_FMT_YUV420M:
242 sizes[0] = output_size;
243 sizes[1] = output_size / 4;
244 sizes[2] = output_size / 4;
245 *num_planes = 3;
246 break;
247 default:
248 return -EINVAL;
249 }
250
251 process_num_buffers(q, sess, num_buffers, true);
252 break;
253 default:
254 return -EINVAL;
255 }
256
257 sess->changed_format = 1;
258 return 0;
259 }
260
vdec_vb2_buf_queue(struct vb2_buffer * vb)261 static void vdec_vb2_buf_queue(struct vb2_buffer *vb)
262 {
263 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
264 struct amvdec_session *sess = vb2_get_drv_priv(vb->vb2_queue);
265 struct v4l2_m2m_ctx *m2m_ctx = sess->m2m_ctx;
266
267 v4l2_m2m_buf_queue(m2m_ctx, vbuf);
268
269 if (!sess->streamon_out)
270 return;
271
272 if (sess->streamon_cap &&
273 vb->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE &&
274 vdec_codec_needs_recycle(sess))
275 vdec_queue_recycle(sess, vb);
276
277 schedule_work(&sess->esparser_queue_work);
278 }
279
vdec_start_streaming(struct vb2_queue * q,unsigned int count)280 static int vdec_start_streaming(struct vb2_queue *q, unsigned int count)
281 {
282 struct amvdec_session *sess = vb2_get_drv_priv(q);
283 struct amvdec_codec_ops *codec_ops = sess->fmt_out->codec_ops;
284 struct amvdec_core *core = sess->core;
285 struct vb2_v4l2_buffer *buf;
286 int ret;
287
288 if (core->cur_sess && core->cur_sess != sess) {
289 ret = -EBUSY;
290 goto bufs_done;
291 }
292
293 if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
294 sess->streamon_out = 1;
295 else
296 sess->streamon_cap = 1;
297
298 if (!sess->streamon_out)
299 return 0;
300
301 if (sess->status == STATUS_NEEDS_RESUME &&
302 q->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE &&
303 sess->changed_format) {
304 codec_ops->resume(sess);
305 sess->status = STATUS_RUNNING;
306 return 0;
307 }
308
309 if (sess->status == STATUS_RUNNING ||
310 sess->status == STATUS_NEEDS_RESUME ||
311 sess->status == STATUS_INIT)
312 return 0;
313
314 sess->vififo_size = SIZE_VIFIFO;
315 sess->vififo_vaddr =
316 dma_alloc_coherent(sess->core->dev, sess->vififo_size,
317 &sess->vififo_paddr, GFP_KERNEL);
318 if (!sess->vififo_vaddr) {
319 dev_err(sess->core->dev, "Failed to request VIFIFO buffer\n");
320 ret = -ENOMEM;
321 goto bufs_done;
322 }
323
324 sess->should_stop = 0;
325 sess->keyframe_found = 0;
326 sess->last_offset = 0;
327 sess->wrap_count = 0;
328 sess->pixelaspect.numerator = 1;
329 sess->pixelaspect.denominator = 1;
330 atomic_set(&sess->esparser_queued_bufs, 0);
331 v4l2_ctrl_s_ctrl(sess->ctrl_min_buf_capture, 1);
332
333 ret = vdec_poweron(sess);
334 if (ret)
335 goto vififo_free;
336
337 sess->sequence_cap = 0;
338 sess->sequence_out = 0;
339 if (vdec_codec_needs_recycle(sess))
340 sess->recycle_thread = kthread_run(vdec_recycle_thread, sess,
341 "vdec_recycle");
342
343 sess->status = STATUS_INIT;
344 core->cur_sess = sess;
345 schedule_work(&sess->esparser_queue_work);
346 return 0;
347
348 vififo_free:
349 dma_free_coherent(sess->core->dev, sess->vififo_size,
350 sess->vififo_vaddr, sess->vififo_paddr);
351 bufs_done:
352 while ((buf = v4l2_m2m_src_buf_remove(sess->m2m_ctx)))
353 v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
354 while ((buf = v4l2_m2m_dst_buf_remove(sess->m2m_ctx)))
355 v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
356
357 if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
358 sess->streamon_out = 0;
359 else
360 sess->streamon_cap = 0;
361
362 return ret;
363 }
364
vdec_free_canvas(struct amvdec_session * sess)365 static void vdec_free_canvas(struct amvdec_session *sess)
366 {
367 int i;
368
369 for (i = 0; i < sess->canvas_num; ++i)
370 meson_canvas_free(sess->core->canvas, sess->canvas_alloc[i]);
371
372 sess->canvas_num = 0;
373 }
374
vdec_reset_timestamps(struct amvdec_session * sess)375 static void vdec_reset_timestamps(struct amvdec_session *sess)
376 {
377 struct amvdec_timestamp *tmp, *n;
378
379 list_for_each_entry_safe(tmp, n, &sess->timestamps, list) {
380 list_del(&tmp->list);
381 kfree(tmp);
382 }
383 }
384
vdec_reset_bufs_recycle(struct amvdec_session * sess)385 static void vdec_reset_bufs_recycle(struct amvdec_session *sess)
386 {
387 struct amvdec_buffer *tmp, *n;
388
389 list_for_each_entry_safe(tmp, n, &sess->bufs_recycle, list) {
390 list_del(&tmp->list);
391 kfree(tmp);
392 }
393 }
394
vdec_stop_streaming(struct vb2_queue * q)395 static void vdec_stop_streaming(struct vb2_queue *q)
396 {
397 struct amvdec_session *sess = vb2_get_drv_priv(q);
398 struct amvdec_codec_ops *codec_ops = sess->fmt_out->codec_ops;
399 struct amvdec_core *core = sess->core;
400 struct vb2_v4l2_buffer *buf;
401
402 if (sess->status == STATUS_RUNNING ||
403 sess->status == STATUS_INIT ||
404 (sess->status == STATUS_NEEDS_RESUME &&
405 (!sess->streamon_out || !sess->streamon_cap))) {
406 if (vdec_codec_needs_recycle(sess))
407 kthread_stop(sess->recycle_thread);
408
409 vdec_poweroff(sess);
410 vdec_free_canvas(sess);
411 dma_free_coherent(sess->core->dev, sess->vififo_size,
412 sess->vififo_vaddr, sess->vififo_paddr);
413 vdec_reset_timestamps(sess);
414 vdec_reset_bufs_recycle(sess);
415 kfree(sess->priv);
416 sess->priv = NULL;
417 core->cur_sess = NULL;
418 sess->status = STATUS_STOPPED;
419 }
420
421 if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
422 while ((buf = v4l2_m2m_src_buf_remove(sess->m2m_ctx)))
423 v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
424
425 sess->streamon_out = 0;
426 } else {
427 /* Drain remaining refs if was still running */
428 if (sess->status >= STATUS_RUNNING && codec_ops->drain)
429 codec_ops->drain(sess);
430
431 while ((buf = v4l2_m2m_dst_buf_remove(sess->m2m_ctx)))
432 v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
433
434 sess->streamon_cap = 0;
435 }
436 }
437
vdec_vb2_buf_prepare(struct vb2_buffer * vb)438 static int vdec_vb2_buf_prepare(struct vb2_buffer *vb)
439 {
440 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
441
442 vbuf->field = V4L2_FIELD_NONE;
443 return 0;
444 }
445
446 static const struct vb2_ops vdec_vb2_ops = {
447 .queue_setup = vdec_queue_setup,
448 .start_streaming = vdec_start_streaming,
449 .stop_streaming = vdec_stop_streaming,
450 .buf_queue = vdec_vb2_buf_queue,
451 .buf_prepare = vdec_vb2_buf_prepare,
452 .wait_prepare = vb2_ops_wait_prepare,
453 .wait_finish = vb2_ops_wait_finish,
454 };
455
456 static int
vdec_querycap(struct file * file,void * fh,struct v4l2_capability * cap)457 vdec_querycap(struct file *file, void *fh, struct v4l2_capability *cap)
458 {
459 strscpy(cap->driver, "meson-vdec", sizeof(cap->driver));
460 strscpy(cap->card, "Amlogic Video Decoder", sizeof(cap->card));
461 strscpy(cap->bus_info, "platform:meson-vdec", sizeof(cap->bus_info));
462
463 return 0;
464 }
465
466 static const struct amvdec_format *
find_format(const struct amvdec_format * fmts,u32 size,u32 pixfmt)467 find_format(const struct amvdec_format *fmts, u32 size, u32 pixfmt)
468 {
469 unsigned int i;
470
471 for (i = 0; i < size; i++) {
472 if (fmts[i].pixfmt == pixfmt)
473 return &fmts[i];
474 }
475
476 return NULL;
477 }
478
479 static unsigned int
vdec_supports_pixfmt_cap(const struct amvdec_format * fmt_out,u32 pixfmt_cap)480 vdec_supports_pixfmt_cap(const struct amvdec_format *fmt_out, u32 pixfmt_cap)
481 {
482 int i;
483
484 for (i = 0; fmt_out->pixfmts_cap[i]; i++)
485 if (fmt_out->pixfmts_cap[i] == pixfmt_cap)
486 return 1;
487
488 return 0;
489 }
490
491 static const struct amvdec_format *
vdec_try_fmt_common(struct amvdec_session * sess,u32 size,struct v4l2_format * f)492 vdec_try_fmt_common(struct amvdec_session *sess, u32 size,
493 struct v4l2_format *f)
494 {
495 struct v4l2_pix_format_mplane *pixmp = &f->fmt.pix_mp;
496 struct v4l2_plane_pix_format *pfmt = pixmp->plane_fmt;
497 const struct amvdec_format *fmts = sess->core->platform->formats;
498 const struct amvdec_format *fmt_out = NULL;
499 u32 output_size = 0;
500
501 memset(pfmt[0].reserved, 0, sizeof(pfmt[0].reserved));
502 memset(pixmp->reserved, 0, sizeof(pixmp->reserved));
503
504 switch (f->type) {
505 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
506 fmt_out = find_format(fmts, size, pixmp->pixelformat);
507 if (!fmt_out) {
508 pixmp->pixelformat = V4L2_PIX_FMT_MPEG2;
509 fmt_out = find_format(fmts, size, pixmp->pixelformat);
510 }
511 break;
512 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
513 fmt_out = sess->fmt_out;
514 break;
515 default:
516 return NULL;
517 }
518
519 pixmp->width = clamp(pixmp->width, (u32)256, fmt_out->max_width);
520 pixmp->height = clamp(pixmp->height, (u32)144, fmt_out->max_height);
521 output_size = get_output_size(pixmp->width, pixmp->height);
522
523 if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
524 if (!pfmt[0].sizeimage)
525 pfmt[0].sizeimage = sess->src_buffer_size;
526 pfmt[0].bytesperline = 0;
527 pixmp->num_planes = 1;
528 } else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
529 fmt_out = sess->fmt_out;
530 if (!vdec_supports_pixfmt_cap(fmt_out, pixmp->pixelformat))
531 pixmp->pixelformat = fmt_out->pixfmts_cap[0];
532
533 memset(pfmt[1].reserved, 0, sizeof(pfmt[1].reserved));
534 if (pixmp->pixelformat == V4L2_PIX_FMT_NV12M) {
535 pfmt[0].sizeimage = output_size;
536 pfmt[0].bytesperline = ALIGN(pixmp->width, 32);
537
538 pfmt[1].sizeimage = output_size / 2;
539 pfmt[1].bytesperline = ALIGN(pixmp->width, 32);
540 pixmp->num_planes = 2;
541 } else if (pixmp->pixelformat == V4L2_PIX_FMT_YUV420M) {
542 pfmt[0].sizeimage = output_size;
543 pfmt[0].bytesperline = ALIGN(pixmp->width, 32);
544
545 pfmt[1].sizeimage = output_size / 4;
546 pfmt[1].bytesperline = ALIGN(pixmp->width, 32) / 2;
547
548 pfmt[2].sizeimage = output_size / 2;
549 pfmt[2].bytesperline = ALIGN(pixmp->width, 32) / 2;
550 pixmp->num_planes = 3;
551 }
552 }
553
554 if (pixmp->field == V4L2_FIELD_ANY)
555 pixmp->field = V4L2_FIELD_NONE;
556
557 return fmt_out;
558 }
559
vdec_try_fmt(struct file * file,void * fh,struct v4l2_format * f)560 static int vdec_try_fmt(struct file *file, void *fh, struct v4l2_format *f)
561 {
562 struct amvdec_session *sess =
563 container_of(file->private_data, struct amvdec_session, fh);
564
565 vdec_try_fmt_common(sess, sess->core->platform->num_formats, f);
566
567 return 0;
568 }
569
vdec_g_fmt(struct file * file,void * fh,struct v4l2_format * f)570 static int vdec_g_fmt(struct file *file, void *fh, struct v4l2_format *f)
571 {
572 struct amvdec_session *sess =
573 container_of(file->private_data, struct amvdec_session, fh);
574 struct v4l2_pix_format_mplane *pixmp = &f->fmt.pix_mp;
575
576 if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
577 pixmp->pixelformat = sess->pixfmt_cap;
578 else if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
579 pixmp->pixelformat = sess->fmt_out->pixfmt;
580
581 if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
582 pixmp->width = sess->width;
583 pixmp->height = sess->height;
584 pixmp->colorspace = sess->colorspace;
585 pixmp->ycbcr_enc = sess->ycbcr_enc;
586 pixmp->quantization = sess->quantization;
587 pixmp->xfer_func = sess->xfer_func;
588 } else if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
589 pixmp->width = sess->width;
590 pixmp->height = sess->height;
591 }
592
593 vdec_try_fmt_common(sess, sess->core->platform->num_formats, f);
594
595 return 0;
596 }
597
vdec_s_fmt(struct file * file,void * fh,struct v4l2_format * f)598 static int vdec_s_fmt(struct file *file, void *fh, struct v4l2_format *f)
599 {
600 struct amvdec_session *sess =
601 container_of(file->private_data, struct amvdec_session, fh);
602 struct v4l2_pix_format_mplane *pixmp = &f->fmt.pix_mp;
603 u32 num_formats = sess->core->platform->num_formats;
604 const struct amvdec_format *fmt_out;
605 struct v4l2_pix_format_mplane orig_pixmp;
606 struct v4l2_format format;
607 u32 pixfmt_out = 0, pixfmt_cap = 0;
608
609 orig_pixmp = *pixmp;
610
611 fmt_out = vdec_try_fmt_common(sess, num_formats, f);
612 if (!fmt_out)
613 return -EINVAL;
614
615 if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
616 pixfmt_out = pixmp->pixelformat;
617 pixfmt_cap = sess->pixfmt_cap;
618 } else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
619 pixfmt_cap = pixmp->pixelformat;
620 pixfmt_out = sess->fmt_out->pixfmt;
621 }
622
623 memset(&format, 0, sizeof(format));
624
625 format.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
626 format.fmt.pix_mp.pixelformat = pixfmt_out;
627 format.fmt.pix_mp.width = orig_pixmp.width;
628 format.fmt.pix_mp.height = orig_pixmp.height;
629 vdec_try_fmt_common(sess, num_formats, &format);
630
631 if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
632 sess->width = format.fmt.pix_mp.width;
633 sess->height = format.fmt.pix_mp.height;
634 sess->colorspace = pixmp->colorspace;
635 sess->ycbcr_enc = pixmp->ycbcr_enc;
636 sess->quantization = pixmp->quantization;
637 sess->xfer_func = pixmp->xfer_func;
638 sess->src_buffer_size = pixmp->plane_fmt[0].sizeimage;
639 }
640
641 memset(&format, 0, sizeof(format));
642
643 format.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
644 format.fmt.pix_mp.pixelformat = pixfmt_cap;
645 format.fmt.pix_mp.width = orig_pixmp.width;
646 format.fmt.pix_mp.height = orig_pixmp.height;
647 vdec_try_fmt_common(sess, num_formats, &format);
648
649 sess->width = format.fmt.pix_mp.width;
650 sess->height = format.fmt.pix_mp.height;
651
652 if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
653 sess->fmt_out = fmt_out;
654 else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
655 sess->pixfmt_cap = format.fmt.pix_mp.pixelformat;
656
657 return 0;
658 }
659
vdec_enum_fmt(struct file * file,void * fh,struct v4l2_fmtdesc * f)660 static int vdec_enum_fmt(struct file *file, void *fh, struct v4l2_fmtdesc *f)
661 {
662 struct amvdec_session *sess =
663 container_of(file->private_data, struct amvdec_session, fh);
664 const struct vdec_platform *platform = sess->core->platform;
665 const struct amvdec_format *fmt_out;
666
667 memset(f->reserved, 0, sizeof(f->reserved));
668
669 if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
670 if (f->index >= platform->num_formats)
671 return -EINVAL;
672
673 fmt_out = &platform->formats[f->index];
674 f->pixelformat = fmt_out->pixfmt;
675 f->flags = fmt_out->flags;
676 } else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
677 fmt_out = sess->fmt_out;
678 if (f->index >= 4 || !fmt_out->pixfmts_cap[f->index])
679 return -EINVAL;
680
681 f->pixelformat = fmt_out->pixfmts_cap[f->index];
682 } else {
683 return -EINVAL;
684 }
685
686 return 0;
687 }
688
vdec_enum_framesizes(struct file * file,void * fh,struct v4l2_frmsizeenum * fsize)689 static int vdec_enum_framesizes(struct file *file, void *fh,
690 struct v4l2_frmsizeenum *fsize)
691 {
692 struct amvdec_session *sess =
693 container_of(file->private_data, struct amvdec_session, fh);
694 const struct amvdec_format *formats = sess->core->platform->formats;
695 const struct amvdec_format *fmt;
696 u32 num_formats = sess->core->platform->num_formats;
697
698 fmt = find_format(formats, num_formats, fsize->pixel_format);
699 if (!fmt || fsize->index)
700 return -EINVAL;
701
702 fsize->type = V4L2_FRMSIZE_TYPE_CONTINUOUS;
703
704 fsize->stepwise.min_width = 256;
705 fsize->stepwise.max_width = fmt->max_width;
706 fsize->stepwise.step_width = 1;
707 fsize->stepwise.min_height = 144;
708 fsize->stepwise.max_height = fmt->max_height;
709 fsize->stepwise.step_height = 1;
710
711 return 0;
712 }
713
714 static int
vdec_decoder_cmd(struct file * file,void * fh,struct v4l2_decoder_cmd * cmd)715 vdec_decoder_cmd(struct file *file, void *fh, struct v4l2_decoder_cmd *cmd)
716 {
717 struct amvdec_session *sess =
718 container_of(file->private_data, struct amvdec_session, fh);
719 struct amvdec_codec_ops *codec_ops = sess->fmt_out->codec_ops;
720 struct device *dev = sess->core->dev;
721 int ret;
722
723 ret = v4l2_m2m_ioctl_try_decoder_cmd(file, fh, cmd);
724 if (ret)
725 return ret;
726
727 if (!(sess->streamon_out & sess->streamon_cap))
728 return 0;
729
730 if (cmd->cmd == V4L2_DEC_CMD_START) {
731 v4l2_m2m_clear_state(sess->m2m_ctx);
732 sess->should_stop = 0;
733 return 0;
734 }
735
736 /* Should not happen */
737 if (cmd->cmd != V4L2_DEC_CMD_STOP)
738 return -EINVAL;
739
740 dev_dbg(dev, "Received V4L2_DEC_CMD_STOP\n");
741
742 sess->should_stop = 1;
743
744 v4l2_m2m_mark_stopped(sess->m2m_ctx);
745
746 if (codec_ops->drain) {
747 vdec_wait_inactive(sess);
748 codec_ops->drain(sess);
749 } else if (codec_ops->eos_sequence) {
750 u32 len;
751 const u8 *data = codec_ops->eos_sequence(&len);
752
753 esparser_queue_eos(sess->core, data, len);
754 vdec_wait_inactive(sess);
755 }
756
757 return ret;
758 }
759
vdec_subscribe_event(struct v4l2_fh * fh,const struct v4l2_event_subscription * sub)760 static int vdec_subscribe_event(struct v4l2_fh *fh,
761 const struct v4l2_event_subscription *sub)
762 {
763 switch (sub->type) {
764 case V4L2_EVENT_EOS:
765 case V4L2_EVENT_SOURCE_CHANGE:
766 return v4l2_event_subscribe(fh, sub, 0, NULL);
767 case V4L2_EVENT_CTRL:
768 return v4l2_ctrl_subscribe_event(fh, sub);
769 default:
770 return -EINVAL;
771 }
772 }
773
vdec_g_pixelaspect(struct file * file,void * fh,int type,struct v4l2_fract * f)774 static int vdec_g_pixelaspect(struct file *file, void *fh, int type,
775 struct v4l2_fract *f)
776 {
777 struct amvdec_session *sess =
778 container_of(file->private_data, struct amvdec_session, fh);
779
780 if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
781 return -EINVAL;
782
783 *f = sess->pixelaspect;
784 return 0;
785 }
786
787 static const struct v4l2_ioctl_ops vdec_ioctl_ops = {
788 .vidioc_querycap = vdec_querycap,
789 .vidioc_enum_fmt_vid_cap = vdec_enum_fmt,
790 .vidioc_enum_fmt_vid_out = vdec_enum_fmt,
791 .vidioc_s_fmt_vid_cap_mplane = vdec_s_fmt,
792 .vidioc_s_fmt_vid_out_mplane = vdec_s_fmt,
793 .vidioc_g_fmt_vid_cap_mplane = vdec_g_fmt,
794 .vidioc_g_fmt_vid_out_mplane = vdec_g_fmt,
795 .vidioc_try_fmt_vid_cap_mplane = vdec_try_fmt,
796 .vidioc_try_fmt_vid_out_mplane = vdec_try_fmt,
797 .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
798 .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
799 .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
800 .vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
801 .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
802 .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
803 .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
804 .vidioc_streamon = v4l2_m2m_ioctl_streamon,
805 .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
806 .vidioc_enum_framesizes = vdec_enum_framesizes,
807 .vidioc_subscribe_event = vdec_subscribe_event,
808 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
809 .vidioc_try_decoder_cmd = v4l2_m2m_ioctl_try_decoder_cmd,
810 .vidioc_decoder_cmd = vdec_decoder_cmd,
811 .vidioc_g_pixelaspect = vdec_g_pixelaspect,
812 };
813
m2m_queue_init(void * priv,struct vb2_queue * src_vq,struct vb2_queue * dst_vq)814 static int m2m_queue_init(void *priv, struct vb2_queue *src_vq,
815 struct vb2_queue *dst_vq)
816 {
817 struct amvdec_session *sess = priv;
818 int ret;
819
820 src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
821 src_vq->io_modes = VB2_MMAP | VB2_DMABUF;
822 src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
823 src_vq->ops = &vdec_vb2_ops;
824 src_vq->mem_ops = &vb2_dma_contig_memops;
825 src_vq->drv_priv = sess;
826 src_vq->buf_struct_size = sizeof(struct dummy_buf);
827 src_vq->min_buffers_needed = 1;
828 src_vq->dev = sess->core->dev;
829 src_vq->lock = &sess->lock;
830 ret = vb2_queue_init(src_vq);
831 if (ret)
832 return ret;
833
834 dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
835 dst_vq->io_modes = VB2_MMAP | VB2_DMABUF;
836 dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
837 dst_vq->ops = &vdec_vb2_ops;
838 dst_vq->mem_ops = &vb2_dma_contig_memops;
839 dst_vq->drv_priv = sess;
840 dst_vq->buf_struct_size = sizeof(struct dummy_buf);
841 dst_vq->min_buffers_needed = 1;
842 dst_vq->dev = sess->core->dev;
843 dst_vq->lock = &sess->lock;
844 return vb2_queue_init(dst_vq);
845 }
846
vdec_init_ctrls(struct amvdec_session * sess)847 static int vdec_init_ctrls(struct amvdec_session *sess)
848 {
849 struct v4l2_ctrl_handler *ctrl_handler = &sess->ctrl_handler;
850 int ret;
851
852 ret = v4l2_ctrl_handler_init(ctrl_handler, 1);
853 if (ret)
854 return ret;
855
856 sess->ctrl_min_buf_capture =
857 v4l2_ctrl_new_std(ctrl_handler, NULL,
858 V4L2_CID_MIN_BUFFERS_FOR_CAPTURE, 1, 32, 1,
859 1);
860
861 ret = ctrl_handler->error;
862 if (ret) {
863 v4l2_ctrl_handler_free(ctrl_handler);
864 return ret;
865 }
866
867 return 0;
868 }
869
vdec_open(struct file * file)870 static int vdec_open(struct file *file)
871 {
872 struct amvdec_core *core = video_drvdata(file);
873 struct device *dev = core->dev;
874 const struct amvdec_format *formats = core->platform->formats;
875 struct amvdec_session *sess;
876 int ret;
877
878 sess = kzalloc(sizeof(*sess), GFP_KERNEL);
879 if (!sess)
880 return -ENOMEM;
881
882 sess->core = core;
883
884 sess->m2m_dev = v4l2_m2m_init(&vdec_m2m_ops);
885 if (IS_ERR(sess->m2m_dev)) {
886 dev_err(dev, "Fail to v4l2_m2m_init\n");
887 ret = PTR_ERR(sess->m2m_dev);
888 goto err_free_sess;
889 }
890
891 sess->m2m_ctx = v4l2_m2m_ctx_init(sess->m2m_dev, sess, m2m_queue_init);
892 if (IS_ERR(sess->m2m_ctx)) {
893 dev_err(dev, "Fail to v4l2_m2m_ctx_init\n");
894 ret = PTR_ERR(sess->m2m_ctx);
895 goto err_m2m_release;
896 }
897
898 ret = vdec_init_ctrls(sess);
899 if (ret)
900 goto err_m2m_release;
901
902 sess->pixfmt_cap = formats[0].pixfmts_cap[0];
903 sess->fmt_out = &formats[0];
904 sess->width = 1280;
905 sess->height = 720;
906 sess->pixelaspect.numerator = 1;
907 sess->pixelaspect.denominator = 1;
908 sess->src_buffer_size = SZ_1M;
909
910 INIT_LIST_HEAD(&sess->timestamps);
911 INIT_LIST_HEAD(&sess->bufs_recycle);
912 INIT_WORK(&sess->esparser_queue_work, esparser_queue_all_src);
913 mutex_init(&sess->lock);
914 mutex_init(&sess->bufs_recycle_lock);
915 spin_lock_init(&sess->ts_spinlock);
916
917 v4l2_fh_init(&sess->fh, core->vdev_dec);
918 sess->fh.ctrl_handler = &sess->ctrl_handler;
919 v4l2_fh_add(&sess->fh);
920 sess->fh.m2m_ctx = sess->m2m_ctx;
921 file->private_data = &sess->fh;
922
923 return 0;
924
925 err_m2m_release:
926 v4l2_m2m_release(sess->m2m_dev);
927 err_free_sess:
928 kfree(sess);
929 return ret;
930 }
931
vdec_close(struct file * file)932 static int vdec_close(struct file *file)
933 {
934 struct amvdec_session *sess =
935 container_of(file->private_data, struct amvdec_session, fh);
936
937 v4l2_m2m_ctx_release(sess->m2m_ctx);
938 v4l2_m2m_release(sess->m2m_dev);
939 v4l2_fh_del(&sess->fh);
940 v4l2_fh_exit(&sess->fh);
941
942 mutex_destroy(&sess->lock);
943 mutex_destroy(&sess->bufs_recycle_lock);
944
945 kfree(sess);
946
947 return 0;
948 }
949
950 static const struct v4l2_file_operations vdec_fops = {
951 .owner = THIS_MODULE,
952 .open = vdec_open,
953 .release = vdec_close,
954 .unlocked_ioctl = video_ioctl2,
955 .poll = v4l2_m2m_fop_poll,
956 .mmap = v4l2_m2m_fop_mmap,
957 };
958
vdec_isr(int irq,void * data)959 static irqreturn_t vdec_isr(int irq, void *data)
960 {
961 struct amvdec_core *core = data;
962 struct amvdec_session *sess = core->cur_sess;
963
964 sess->last_irq_jiffies = get_jiffies_64();
965
966 return sess->fmt_out->codec_ops->isr(sess);
967 }
968
vdec_threaded_isr(int irq,void * data)969 static irqreturn_t vdec_threaded_isr(int irq, void *data)
970 {
971 struct amvdec_core *core = data;
972 struct amvdec_session *sess = core->cur_sess;
973
974 return sess->fmt_out->codec_ops->threaded_isr(sess);
975 }
976
977 static const struct of_device_id vdec_dt_match[] = {
978 { .compatible = "amlogic,gxbb-vdec",
979 .data = &vdec_platform_gxbb },
980 { .compatible = "amlogic,gxm-vdec",
981 .data = &vdec_platform_gxm },
982 { .compatible = "amlogic,gxl-vdec",
983 .data = &vdec_platform_gxl },
984 { .compatible = "amlogic,g12a-vdec",
985 .data = &vdec_platform_g12a },
986 { .compatible = "amlogic,sm1-vdec",
987 .data = &vdec_platform_sm1 },
988 {}
989 };
990 MODULE_DEVICE_TABLE(of, vdec_dt_match);
991
vdec_probe(struct platform_device * pdev)992 static int vdec_probe(struct platform_device *pdev)
993 {
994 struct device *dev = &pdev->dev;
995 struct video_device *vdev;
996 struct amvdec_core *core;
997 const struct of_device_id *of_id;
998 int irq;
999 int ret;
1000
1001 core = devm_kzalloc(dev, sizeof(*core), GFP_KERNEL);
1002 if (!core)
1003 return -ENOMEM;
1004
1005 core->dev = dev;
1006 platform_set_drvdata(pdev, core);
1007
1008 core->dos_base = devm_platform_ioremap_resource_byname(pdev, "dos");
1009 if (IS_ERR(core->dos_base))
1010 return PTR_ERR(core->dos_base);
1011
1012 core->esparser_base = devm_platform_ioremap_resource_byname(pdev, "esparser");
1013 if (IS_ERR(core->esparser_base))
1014 return PTR_ERR(core->esparser_base);
1015
1016 core->regmap_ao =
1017 syscon_regmap_lookup_by_phandle(dev->of_node,
1018 "amlogic,ao-sysctrl");
1019 if (IS_ERR(core->regmap_ao)) {
1020 dev_err(dev, "Couldn't regmap AO sysctrl\n");
1021 return PTR_ERR(core->regmap_ao);
1022 }
1023
1024 core->canvas = meson_canvas_get(dev);
1025 if (IS_ERR(core->canvas))
1026 return PTR_ERR(core->canvas);
1027
1028 of_id = of_match_node(vdec_dt_match, dev->of_node);
1029 core->platform = of_id->data;
1030
1031 if (core->platform->revision == VDEC_REVISION_G12A ||
1032 core->platform->revision == VDEC_REVISION_SM1) {
1033 core->vdec_hevcf_clk = devm_clk_get(dev, "vdec_hevcf");
1034 if (IS_ERR(core->vdec_hevcf_clk))
1035 return -EPROBE_DEFER;
1036 }
1037
1038 core->dos_parser_clk = devm_clk_get(dev, "dos_parser");
1039 if (IS_ERR(core->dos_parser_clk))
1040 return -EPROBE_DEFER;
1041
1042 core->dos_clk = devm_clk_get(dev, "dos");
1043 if (IS_ERR(core->dos_clk))
1044 return -EPROBE_DEFER;
1045
1046 core->vdec_1_clk = devm_clk_get(dev, "vdec_1");
1047 if (IS_ERR(core->vdec_1_clk))
1048 return -EPROBE_DEFER;
1049
1050 core->vdec_hevc_clk = devm_clk_get(dev, "vdec_hevc");
1051 if (IS_ERR(core->vdec_hevc_clk))
1052 return -EPROBE_DEFER;
1053
1054 irq = platform_get_irq_byname(pdev, "vdec");
1055 if (irq < 0)
1056 return irq;
1057
1058 ret = devm_request_threaded_irq(core->dev, irq, vdec_isr,
1059 vdec_threaded_isr, IRQF_ONESHOT,
1060 "vdec", core);
1061 if (ret)
1062 return ret;
1063
1064 ret = esparser_init(pdev, core);
1065 if (ret)
1066 return ret;
1067
1068 ret = v4l2_device_register(dev, &core->v4l2_dev);
1069 if (ret) {
1070 dev_err(dev, "Couldn't register v4l2 device\n");
1071 return -ENOMEM;
1072 }
1073
1074 vdev = video_device_alloc();
1075 if (!vdev) {
1076 ret = -ENOMEM;
1077 goto err_vdev_release;
1078 }
1079
1080 core->vdev_dec = vdev;
1081 core->dev_dec = dev;
1082 mutex_init(&core->lock);
1083
1084 strscpy(vdev->name, "meson-video-decoder", sizeof(vdev->name));
1085 vdev->release = video_device_release;
1086 vdev->fops = &vdec_fops;
1087 vdev->ioctl_ops = &vdec_ioctl_ops;
1088 vdev->vfl_dir = VFL_DIR_M2M;
1089 vdev->v4l2_dev = &core->v4l2_dev;
1090 vdev->lock = &core->lock;
1091 vdev->device_caps = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_STREAMING;
1092
1093 video_set_drvdata(vdev, core);
1094
1095 ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
1096 if (ret) {
1097 dev_err(dev, "Failed registering video device\n");
1098 goto err_vdev_release;
1099 }
1100
1101 return 0;
1102
1103 err_vdev_release:
1104 video_device_release(vdev);
1105 v4l2_device_unregister(&core->v4l2_dev);
1106 return ret;
1107 }
1108
vdec_remove(struct platform_device * pdev)1109 static void vdec_remove(struct platform_device *pdev)
1110 {
1111 struct amvdec_core *core = platform_get_drvdata(pdev);
1112
1113 video_unregister_device(core->vdev_dec);
1114 v4l2_device_unregister(&core->v4l2_dev);
1115 }
1116
1117 static struct platform_driver meson_vdec_driver = {
1118 .probe = vdec_probe,
1119 .remove_new = vdec_remove,
1120 .driver = {
1121 .name = "meson-vdec",
1122 .of_match_table = vdec_dt_match,
1123 },
1124 };
1125 module_platform_driver(meson_vdec_driver);
1126
1127 MODULE_DESCRIPTION("Meson video decoder driver for GXBB/GXL/GXM/G12/SM1");
1128 MODULE_AUTHOR("Maxime Jourdan <mjourdan@baylibre.com>");
1129 MODULE_LICENSE("GPL");
1130