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_obj(*new_buf);
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 q_num_bufs = vb2_get_num_buffers(q);
171 unsigned int buffers_total = q_num_bufs + *num_buffers;
172 u32 min_buf_capture = v4l2_ctrl_g_ctrl(sess->ctrl_min_buf_capture);
173
174 if (q_num_bufs + *num_buffers < min_buf_capture)
175 *num_buffers = min_buf_capture - q_num_bufs;
176 if (is_reqbufs && buffers_total < fmt_out->min_buffers)
177 *num_buffers = fmt_out->min_buffers - q_num_bufs;
178 if (buffers_total > fmt_out->max_buffers)
179 *num_buffers = fmt_out->max_buffers - q_num_bufs;
180
181 /* We need to program the complete CAPTURE buffer list
182 * in registers during start_streaming, and the firmwares
183 * are free to choose any of them to write frames to. As such,
184 * we need all of them to be queued into the driver
185 */
186 sess->num_dst_bufs = q_num_bufs + *num_buffers;
187 q->min_queued_buffers = max(fmt_out->min_buffers, sess->num_dst_bufs);
188 }
189
vdec_queue_setup(struct vb2_queue * q,unsigned int * num_buffers,unsigned int * num_planes,unsigned int sizes[],struct device * alloc_devs[])190 static int vdec_queue_setup(struct vb2_queue *q, unsigned int *num_buffers,
191 unsigned int *num_planes, unsigned int sizes[],
192 struct device *alloc_devs[])
193 {
194 struct amvdec_session *sess = vb2_get_drv_priv(q);
195 u32 output_size = amvdec_get_output_size(sess);
196
197 if (*num_planes) {
198 switch (q->type) {
199 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
200 if (*num_planes != 1 ||
201 sizes[0] < sess->src_buffer_size)
202 return -EINVAL;
203 break;
204 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
205 switch (sess->pixfmt_cap) {
206 case V4L2_PIX_FMT_NV12M:
207 if (*num_planes != 2 ||
208 sizes[0] < output_size ||
209 sizes[1] < output_size / 2)
210 return -EINVAL;
211 break;
212 case V4L2_PIX_FMT_YUV420M:
213 if (*num_planes != 3 ||
214 sizes[0] < output_size ||
215 sizes[1] < output_size / 4 ||
216 sizes[2] < output_size / 4)
217 return -EINVAL;
218 break;
219 default:
220 return -EINVAL;
221 }
222
223 process_num_buffers(q, sess, num_buffers, false);
224 break;
225 }
226
227 return 0;
228 }
229
230 switch (q->type) {
231 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
232 sizes[0] = sess->src_buffer_size;
233 *num_planes = 1;
234 break;
235 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
236 switch (sess->pixfmt_cap) {
237 case V4L2_PIX_FMT_NV12M:
238 sizes[0] = output_size;
239 sizes[1] = output_size / 2;
240 *num_planes = 2;
241 break;
242 case V4L2_PIX_FMT_YUV420M:
243 sizes[0] = output_size;
244 sizes[1] = output_size / 4;
245 sizes[2] = output_size / 4;
246 *num_planes = 3;
247 break;
248 default:
249 return -EINVAL;
250 }
251
252 process_num_buffers(q, sess, num_buffers, true);
253 break;
254 default:
255 return -EINVAL;
256 }
257
258 sess->changed_format = 1;
259 return 0;
260 }
261
vdec_vb2_buf_queue(struct vb2_buffer * vb)262 static void vdec_vb2_buf_queue(struct vb2_buffer *vb)
263 {
264 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
265 struct amvdec_session *sess = vb2_get_drv_priv(vb->vb2_queue);
266 struct v4l2_m2m_ctx *m2m_ctx = sess->m2m_ctx;
267
268 v4l2_m2m_buf_queue(m2m_ctx, vbuf);
269
270 if (!sess->streamon_out)
271 return;
272
273 if (sess->streamon_cap &&
274 vb->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE &&
275 vdec_codec_needs_recycle(sess))
276 vdec_queue_recycle(sess, vb);
277
278 schedule_work(&sess->esparser_queue_work);
279 }
280
vdec_start_streaming(struct vb2_queue * q,unsigned int count)281 static int vdec_start_streaming(struct vb2_queue *q, unsigned int count)
282 {
283 struct amvdec_session *sess = vb2_get_drv_priv(q);
284 struct amvdec_codec_ops *codec_ops = sess->fmt_out->codec_ops;
285 struct amvdec_core *core = sess->core;
286 struct vb2_v4l2_buffer *buf;
287 int ret;
288
289 if (core->cur_sess && core->cur_sess != sess) {
290 ret = -EBUSY;
291 goto bufs_done;
292 }
293
294 if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
295 sess->streamon_out = 1;
296 else
297 sess->streamon_cap = 1;
298
299 if (!sess->streamon_out)
300 return 0;
301
302 if (sess->status == STATUS_NEEDS_RESUME &&
303 q->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE &&
304 sess->changed_format) {
305 codec_ops->resume(sess);
306 sess->status = STATUS_RUNNING;
307 return 0;
308 }
309
310 if (sess->status == STATUS_RUNNING ||
311 sess->status == STATUS_NEEDS_RESUME ||
312 sess->status == STATUS_INIT)
313 return 0;
314
315 sess->vififo_size = SIZE_VIFIFO;
316 sess->vififo_vaddr =
317 dma_alloc_coherent(sess->core->dev, sess->vififo_size,
318 &sess->vififo_paddr, GFP_KERNEL);
319 if (!sess->vififo_vaddr) {
320 dev_err(sess->core->dev, "Failed to request VIFIFO buffer\n");
321 ret = -ENOMEM;
322 goto bufs_done;
323 }
324
325 sess->should_stop = 0;
326 sess->keyframe_found = 0;
327 sess->last_offset = 0;
328 sess->wrap_count = 0;
329 sess->pixelaspect.numerator = 1;
330 sess->pixelaspect.denominator = 1;
331 atomic_set(&sess->esparser_queued_bufs, 0);
332 v4l2_ctrl_s_ctrl(sess->ctrl_min_buf_capture, 1);
333
334 ret = vdec_poweron(sess);
335 if (ret)
336 goto vififo_free;
337
338 sess->sequence_cap = 0;
339 sess->sequence_out = 0;
340 if (vdec_codec_needs_recycle(sess))
341 sess->recycle_thread = kthread_run(vdec_recycle_thread, sess,
342 "vdec_recycle");
343
344 sess->status = STATUS_INIT;
345 core->cur_sess = sess;
346 schedule_work(&sess->esparser_queue_work);
347 return 0;
348
349 vififo_free:
350 dma_free_coherent(sess->core->dev, sess->vififo_size,
351 sess->vififo_vaddr, sess->vififo_paddr);
352 bufs_done:
353 while ((buf = v4l2_m2m_src_buf_remove(sess->m2m_ctx)))
354 v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
355 while ((buf = v4l2_m2m_dst_buf_remove(sess->m2m_ctx)))
356 v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
357
358 if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
359 sess->streamon_out = 0;
360 else
361 sess->streamon_cap = 0;
362
363 return ret;
364 }
365
vdec_free_canvas(struct amvdec_session * sess)366 static void vdec_free_canvas(struct amvdec_session *sess)
367 {
368 int i;
369
370 for (i = 0; i < sess->canvas_num; ++i)
371 meson_canvas_free(sess->core->canvas, sess->canvas_alloc[i]);
372
373 sess->canvas_num = 0;
374 }
375
vdec_reset_timestamps(struct amvdec_session * sess)376 static void vdec_reset_timestamps(struct amvdec_session *sess)
377 {
378 struct amvdec_timestamp *tmp, *n;
379
380 list_for_each_entry_safe(tmp, n, &sess->timestamps, list) {
381 list_del(&tmp->list);
382 kfree(tmp);
383 }
384 }
385
vdec_reset_bufs_recycle(struct amvdec_session * sess)386 static void vdec_reset_bufs_recycle(struct amvdec_session *sess)
387 {
388 struct amvdec_buffer *tmp, *n;
389
390 list_for_each_entry_safe(tmp, n, &sess->bufs_recycle, list) {
391 list_del(&tmp->list);
392 kfree(tmp);
393 }
394 }
395
vdec_stop_streaming(struct vb2_queue * q)396 static void vdec_stop_streaming(struct vb2_queue *q)
397 {
398 struct amvdec_session *sess = vb2_get_drv_priv(q);
399 struct amvdec_codec_ops *codec_ops = sess->fmt_out->codec_ops;
400 struct amvdec_core *core = sess->core;
401 struct vb2_v4l2_buffer *buf;
402
403 if (sess->status == STATUS_RUNNING ||
404 sess->status == STATUS_INIT ||
405 (sess->status == STATUS_NEEDS_RESUME &&
406 (!sess->streamon_out || !sess->streamon_cap))) {
407 if (vdec_codec_needs_recycle(sess))
408 kthread_stop(sess->recycle_thread);
409
410 vdec_poweroff(sess);
411 vdec_free_canvas(sess);
412 dma_free_coherent(sess->core->dev, sess->vififo_size,
413 sess->vififo_vaddr, sess->vififo_paddr);
414 vdec_reset_timestamps(sess);
415 vdec_reset_bufs_recycle(sess);
416 kfree(sess->priv);
417 sess->priv = NULL;
418 core->cur_sess = NULL;
419 sess->status = STATUS_STOPPED;
420 }
421
422 if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
423 while ((buf = v4l2_m2m_src_buf_remove(sess->m2m_ctx)))
424 v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
425
426 sess->streamon_out = 0;
427 } else {
428 /* Drain remaining refs if was still running */
429 if (sess->status >= STATUS_RUNNING && codec_ops->drain)
430 codec_ops->drain(sess);
431
432 while ((buf = v4l2_m2m_dst_buf_remove(sess->m2m_ctx)))
433 v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
434
435 sess->streamon_cap = 0;
436 }
437 }
438
vdec_vb2_buf_prepare(struct vb2_buffer * vb)439 static int vdec_vb2_buf_prepare(struct vb2_buffer *vb)
440 {
441 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
442
443 vbuf->field = V4L2_FIELD_NONE;
444 return 0;
445 }
446
447 static const struct vb2_ops vdec_vb2_ops = {
448 .queue_setup = vdec_queue_setup,
449 .start_streaming = vdec_start_streaming,
450 .stop_streaming = vdec_stop_streaming,
451 .buf_queue = vdec_vb2_buf_queue,
452 .buf_prepare = vdec_vb2_buf_prepare,
453 };
454
455 static int
vdec_querycap(struct file * file,void * fh,struct v4l2_capability * cap)456 vdec_querycap(struct file *file, void *fh, struct v4l2_capability *cap)
457 {
458 strscpy(cap->driver, "meson-vdec", sizeof(cap->driver));
459 strscpy(cap->card, "Amlogic Video Decoder", sizeof(cap->card));
460 strscpy(cap->bus_info, "platform:meson-vdec", sizeof(cap->bus_info));
461
462 return 0;
463 }
464
465 static const struct amvdec_format *
find_format(const struct amvdec_format * fmts,u32 size,u32 pixfmt)466 find_format(const struct amvdec_format *fmts, u32 size, u32 pixfmt)
467 {
468 unsigned int i;
469
470 for (i = 0; i < size; i++) {
471 if (fmts[i].pixfmt == pixfmt)
472 return &fmts[i];
473 }
474
475 return NULL;
476 }
477
478 static unsigned int
vdec_supports_pixfmt_cap(const struct amvdec_format * fmt_out,u32 pixfmt_cap)479 vdec_supports_pixfmt_cap(const struct amvdec_format *fmt_out, u32 pixfmt_cap)
480 {
481 int i;
482
483 for (i = 0; fmt_out->pixfmts_cap[i]; i++)
484 if (fmt_out->pixfmts_cap[i] == pixfmt_cap)
485 return 1;
486
487 return 0;
488 }
489
490 static const struct amvdec_format *
vdec_try_fmt_common(struct amvdec_session * sess,u32 size,struct v4l2_format * f)491 vdec_try_fmt_common(struct amvdec_session *sess, u32 size,
492 struct v4l2_format *f)
493 {
494 struct v4l2_pix_format_mplane *pixmp = &f->fmt.pix_mp;
495 struct v4l2_plane_pix_format *pfmt = pixmp->plane_fmt;
496 const struct amvdec_format *fmts = sess->core->platform->formats;
497 const struct amvdec_format *fmt_out = NULL;
498 u32 output_size = 0;
499
500 memset(pfmt[0].reserved, 0, sizeof(pfmt[0].reserved));
501 memset(pixmp->reserved, 0, sizeof(pixmp->reserved));
502
503 switch (f->type) {
504 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
505 fmt_out = find_format(fmts, size, pixmp->pixelformat);
506 if (!fmt_out) {
507 pixmp->pixelformat = V4L2_PIX_FMT_MPEG2;
508 fmt_out = find_format(fmts, size, pixmp->pixelformat);
509 }
510 break;
511 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
512 fmt_out = sess->fmt_out;
513 break;
514 default:
515 return NULL;
516 }
517
518 pixmp->width = clamp(pixmp->width, (u32)256, fmt_out->max_width);
519 pixmp->height = clamp(pixmp->height, (u32)144, fmt_out->max_height);
520 output_size = get_output_size(pixmp->width, pixmp->height);
521
522 if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
523 if (!pfmt[0].sizeimage)
524 pfmt[0].sizeimage = sess->src_buffer_size;
525 pfmt[0].bytesperline = 0;
526 pixmp->num_planes = 1;
527 } else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
528 fmt_out = sess->fmt_out;
529 if (!vdec_supports_pixfmt_cap(fmt_out, pixmp->pixelformat))
530 pixmp->pixelformat = fmt_out->pixfmts_cap[0];
531
532 memset(pfmt[1].reserved, 0, sizeof(pfmt[1].reserved));
533 if (pixmp->pixelformat == V4L2_PIX_FMT_NV12M) {
534 pfmt[0].sizeimage = output_size;
535 pfmt[0].bytesperline = ALIGN(pixmp->width, 32);
536
537 pfmt[1].sizeimage = output_size / 2;
538 pfmt[1].bytesperline = ALIGN(pixmp->width, 32);
539 pixmp->num_planes = 2;
540 } else if (pixmp->pixelformat == V4L2_PIX_FMT_YUV420M) {
541 pfmt[0].sizeimage = output_size;
542 pfmt[0].bytesperline = ALIGN(pixmp->width, 32);
543
544 pfmt[1].sizeimage = output_size / 4;
545 pfmt[1].bytesperline = ALIGN(pixmp->width, 32) / 2;
546
547 pfmt[2].sizeimage = output_size / 2;
548 pfmt[2].bytesperline = ALIGN(pixmp->width, 32) / 2;
549 pixmp->num_planes = 3;
550 }
551 }
552
553 if (pixmp->field == V4L2_FIELD_ANY)
554 pixmp->field = V4L2_FIELD_NONE;
555
556 return fmt_out;
557 }
558
vdec_try_fmt(struct file * file,void * fh,struct v4l2_format * f)559 static int vdec_try_fmt(struct file *file, void *fh, struct v4l2_format *f)
560 {
561 struct amvdec_session *sess = file_to_amvdec_session(file);
562
563 vdec_try_fmt_common(sess, sess->core->platform->num_formats, f);
564
565 return 0;
566 }
567
vdec_g_fmt(struct file * file,void * fh,struct v4l2_format * f)568 static int vdec_g_fmt(struct file *file, void *fh, struct v4l2_format *f)
569 {
570 struct amvdec_session *sess = file_to_amvdec_session(file);
571 struct v4l2_pix_format_mplane *pixmp = &f->fmt.pix_mp;
572
573 if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
574 pixmp->pixelformat = sess->pixfmt_cap;
575 else if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
576 pixmp->pixelformat = sess->fmt_out->pixfmt;
577
578 if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
579 pixmp->width = sess->width;
580 pixmp->height = sess->height;
581 pixmp->colorspace = sess->colorspace;
582 pixmp->ycbcr_enc = sess->ycbcr_enc;
583 pixmp->quantization = sess->quantization;
584 pixmp->xfer_func = sess->xfer_func;
585 } else if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
586 pixmp->width = sess->width;
587 pixmp->height = sess->height;
588 }
589
590 vdec_try_fmt_common(sess, sess->core->platform->num_formats, f);
591
592 return 0;
593 }
594
vdec_s_fmt(struct file * file,void * fh,struct v4l2_format * f)595 static int vdec_s_fmt(struct file *file, void *fh, struct v4l2_format *f)
596 {
597 struct amvdec_session *sess = file_to_amvdec_session(file);
598 struct v4l2_pix_format_mplane *pixmp = &f->fmt.pix_mp;
599 u32 num_formats = sess->core->platform->num_formats;
600 const struct amvdec_format *fmt_out;
601 struct v4l2_pix_format_mplane orig_pixmp;
602 struct v4l2_format format;
603 u32 pixfmt_out = 0, pixfmt_cap = 0;
604
605 orig_pixmp = *pixmp;
606
607 fmt_out = vdec_try_fmt_common(sess, num_formats, f);
608 if (!fmt_out)
609 return -EINVAL;
610
611 if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
612 pixfmt_out = pixmp->pixelformat;
613 pixfmt_cap = sess->pixfmt_cap;
614 } else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
615 pixfmt_cap = pixmp->pixelformat;
616 pixfmt_out = sess->fmt_out->pixfmt;
617 }
618
619 memset(&format, 0, sizeof(format));
620
621 format.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
622 format.fmt.pix_mp.pixelformat = pixfmt_out;
623 format.fmt.pix_mp.width = orig_pixmp.width;
624 format.fmt.pix_mp.height = orig_pixmp.height;
625 vdec_try_fmt_common(sess, num_formats, &format);
626
627 if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
628 sess->width = format.fmt.pix_mp.width;
629 sess->height = format.fmt.pix_mp.height;
630 sess->colorspace = pixmp->colorspace;
631 sess->ycbcr_enc = pixmp->ycbcr_enc;
632 sess->quantization = pixmp->quantization;
633 sess->xfer_func = pixmp->xfer_func;
634 sess->src_buffer_size = pixmp->plane_fmt[0].sizeimage;
635 }
636
637 memset(&format, 0, sizeof(format));
638
639 format.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
640 format.fmt.pix_mp.pixelformat = pixfmt_cap;
641 format.fmt.pix_mp.width = orig_pixmp.width;
642 format.fmt.pix_mp.height = orig_pixmp.height;
643 vdec_try_fmt_common(sess, num_formats, &format);
644
645 sess->width = format.fmt.pix_mp.width;
646 sess->height = format.fmt.pix_mp.height;
647
648 if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
649 sess->fmt_out = fmt_out;
650 else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
651 sess->pixfmt_cap = format.fmt.pix_mp.pixelformat;
652
653 return 0;
654 }
655
vdec_enum_fmt(struct file * file,void * fh,struct v4l2_fmtdesc * f)656 static int vdec_enum_fmt(struct file *file, void *fh, struct v4l2_fmtdesc *f)
657 {
658 struct amvdec_session *sess = file_to_amvdec_session(file);
659 const struct vdec_platform *platform = sess->core->platform;
660 const struct amvdec_format *fmt_out;
661
662 memset(f->reserved, 0, sizeof(f->reserved));
663
664 if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
665 if (f->index >= platform->num_formats)
666 return -EINVAL;
667
668 fmt_out = &platform->formats[f->index];
669 f->pixelformat = fmt_out->pixfmt;
670 f->flags = fmt_out->flags;
671 } else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
672 fmt_out = sess->fmt_out;
673 if (f->index >= 4 || !fmt_out->pixfmts_cap[f->index])
674 return -EINVAL;
675
676 f->pixelformat = fmt_out->pixfmts_cap[f->index];
677 } else {
678 return -EINVAL;
679 }
680
681 return 0;
682 }
683
vdec_enum_framesizes(struct file * file,void * fh,struct v4l2_frmsizeenum * fsize)684 static int vdec_enum_framesizes(struct file *file, void *fh,
685 struct v4l2_frmsizeenum *fsize)
686 {
687 struct amvdec_session *sess = file_to_amvdec_session(file);
688 const struct amvdec_format *formats = sess->core->platform->formats;
689 const struct amvdec_format *fmt;
690 u32 num_formats = sess->core->platform->num_formats;
691
692 fmt = find_format(formats, num_formats, fsize->pixel_format);
693 if (!fmt || fsize->index)
694 return -EINVAL;
695
696 fsize->type = V4L2_FRMSIZE_TYPE_CONTINUOUS;
697
698 fsize->stepwise.min_width = 256;
699 fsize->stepwise.max_width = fmt->max_width;
700 fsize->stepwise.step_width = 1;
701 fsize->stepwise.min_height = 144;
702 fsize->stepwise.max_height = fmt->max_height;
703 fsize->stepwise.step_height = 1;
704
705 return 0;
706 }
707
708 static int
vdec_decoder_cmd(struct file * file,void * fh,struct v4l2_decoder_cmd * cmd)709 vdec_decoder_cmd(struct file *file, void *fh, struct v4l2_decoder_cmd *cmd)
710 {
711 struct amvdec_session *sess = file_to_amvdec_session(file);
712 struct amvdec_codec_ops *codec_ops = sess->fmt_out->codec_ops;
713 struct device *dev = sess->core->dev;
714 int ret;
715
716 ret = v4l2_m2m_ioctl_try_decoder_cmd(file, fh, cmd);
717 if (ret)
718 return ret;
719
720 if (!(sess->streamon_out & sess->streamon_cap))
721 return 0;
722
723 if (cmd->cmd == V4L2_DEC_CMD_START) {
724 v4l2_m2m_clear_state(sess->m2m_ctx);
725 sess->should_stop = 0;
726 return 0;
727 }
728
729 /* Should not happen */
730 if (cmd->cmd != V4L2_DEC_CMD_STOP)
731 return -EINVAL;
732
733 dev_dbg(dev, "Received V4L2_DEC_CMD_STOP\n");
734
735 sess->should_stop = 1;
736
737 v4l2_m2m_mark_stopped(sess->m2m_ctx);
738
739 if (codec_ops->drain) {
740 vdec_wait_inactive(sess);
741 codec_ops->drain(sess);
742 } else if (codec_ops->eos_sequence) {
743 u32 len;
744 const u8 *data = codec_ops->eos_sequence(&len);
745
746 esparser_queue_eos(sess->core, data, len);
747 vdec_wait_inactive(sess);
748 }
749
750 return ret;
751 }
752
vdec_subscribe_event(struct v4l2_fh * fh,const struct v4l2_event_subscription * sub)753 static int vdec_subscribe_event(struct v4l2_fh *fh,
754 const struct v4l2_event_subscription *sub)
755 {
756 switch (sub->type) {
757 case V4L2_EVENT_EOS:
758 case V4L2_EVENT_SOURCE_CHANGE:
759 return v4l2_event_subscribe(fh, sub, 0, NULL);
760 case V4L2_EVENT_CTRL:
761 return v4l2_ctrl_subscribe_event(fh, sub);
762 default:
763 return -EINVAL;
764 }
765 }
766
vdec_g_pixelaspect(struct file * file,void * fh,int type,struct v4l2_fract * f)767 static int vdec_g_pixelaspect(struct file *file, void *fh, int type,
768 struct v4l2_fract *f)
769 {
770 struct amvdec_session *sess = file_to_amvdec_session(file);
771
772 if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
773 return -EINVAL;
774
775 *f = sess->pixelaspect;
776 return 0;
777 }
778
779 static const struct v4l2_ioctl_ops vdec_ioctl_ops = {
780 .vidioc_querycap = vdec_querycap,
781 .vidioc_enum_fmt_vid_cap = vdec_enum_fmt,
782 .vidioc_enum_fmt_vid_out = vdec_enum_fmt,
783 .vidioc_s_fmt_vid_cap_mplane = vdec_s_fmt,
784 .vidioc_s_fmt_vid_out_mplane = vdec_s_fmt,
785 .vidioc_g_fmt_vid_cap_mplane = vdec_g_fmt,
786 .vidioc_g_fmt_vid_out_mplane = vdec_g_fmt,
787 .vidioc_try_fmt_vid_cap_mplane = vdec_try_fmt,
788 .vidioc_try_fmt_vid_out_mplane = vdec_try_fmt,
789 .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
790 .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
791 .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
792 .vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
793 .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
794 .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
795 .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
796 .vidioc_streamon = v4l2_m2m_ioctl_streamon,
797 .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
798 .vidioc_enum_framesizes = vdec_enum_framesizes,
799 .vidioc_subscribe_event = vdec_subscribe_event,
800 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
801 .vidioc_try_decoder_cmd = v4l2_m2m_ioctl_try_decoder_cmd,
802 .vidioc_decoder_cmd = vdec_decoder_cmd,
803 .vidioc_g_pixelaspect = vdec_g_pixelaspect,
804 };
805
m2m_queue_init(void * priv,struct vb2_queue * src_vq,struct vb2_queue * dst_vq)806 static int m2m_queue_init(void *priv, struct vb2_queue *src_vq,
807 struct vb2_queue *dst_vq)
808 {
809 struct amvdec_session *sess = priv;
810 int ret;
811
812 src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
813 src_vq->io_modes = VB2_MMAP | VB2_DMABUF;
814 src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
815 src_vq->ops = &vdec_vb2_ops;
816 src_vq->mem_ops = &vb2_dma_contig_memops;
817 src_vq->drv_priv = sess;
818 src_vq->buf_struct_size = sizeof(struct dummy_buf);
819 src_vq->min_queued_buffers = 1;
820 src_vq->dev = sess->core->dev;
821 src_vq->lock = &sess->lock;
822 ret = vb2_queue_init(src_vq);
823 if (ret)
824 return ret;
825
826 dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
827 dst_vq->io_modes = VB2_MMAP | VB2_DMABUF;
828 dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
829 dst_vq->ops = &vdec_vb2_ops;
830 dst_vq->mem_ops = &vb2_dma_contig_memops;
831 dst_vq->drv_priv = sess;
832 dst_vq->buf_struct_size = sizeof(struct dummy_buf);
833 dst_vq->min_queued_buffers = 1;
834 dst_vq->dev = sess->core->dev;
835 dst_vq->lock = &sess->lock;
836 return vb2_queue_init(dst_vq);
837 }
838
vdec_init_ctrls(struct amvdec_session * sess)839 static int vdec_init_ctrls(struct amvdec_session *sess)
840 {
841 struct v4l2_ctrl_handler *ctrl_handler = &sess->ctrl_handler;
842 int ret;
843
844 ret = v4l2_ctrl_handler_init(ctrl_handler, 1);
845 if (ret)
846 return ret;
847
848 sess->ctrl_min_buf_capture =
849 v4l2_ctrl_new_std(ctrl_handler, NULL,
850 V4L2_CID_MIN_BUFFERS_FOR_CAPTURE, 1, 32, 1,
851 1);
852
853 ret = ctrl_handler->error;
854 if (ret) {
855 v4l2_ctrl_handler_free(ctrl_handler);
856 return ret;
857 }
858
859 return 0;
860 }
861
vdec_open(struct file * file)862 static int vdec_open(struct file *file)
863 {
864 struct amvdec_core *core = video_drvdata(file);
865 struct device *dev = core->dev;
866 const struct amvdec_format *formats = core->platform->formats;
867 struct amvdec_session *sess;
868 int ret;
869
870 sess = kzalloc_obj(*sess);
871 if (!sess)
872 return -ENOMEM;
873
874 sess->core = core;
875
876 sess->m2m_dev = v4l2_m2m_init(&vdec_m2m_ops);
877 if (IS_ERR(sess->m2m_dev)) {
878 dev_err(dev, "Fail to v4l2_m2m_init\n");
879 ret = PTR_ERR(sess->m2m_dev);
880 goto err_free_sess;
881 }
882
883 sess->m2m_ctx = v4l2_m2m_ctx_init(sess->m2m_dev, sess, m2m_queue_init);
884 if (IS_ERR(sess->m2m_ctx)) {
885 dev_err(dev, "Fail to v4l2_m2m_ctx_init\n");
886 ret = PTR_ERR(sess->m2m_ctx);
887 goto err_m2m_release;
888 }
889
890 ret = vdec_init_ctrls(sess);
891 if (ret)
892 goto err_m2m_release;
893
894 sess->pixfmt_cap = formats[0].pixfmts_cap[0];
895 sess->fmt_out = &formats[0];
896 sess->width = 1280;
897 sess->height = 720;
898 sess->pixelaspect.numerator = 1;
899 sess->pixelaspect.denominator = 1;
900 sess->src_buffer_size = SZ_1M;
901
902 INIT_LIST_HEAD(&sess->timestamps);
903 INIT_LIST_HEAD(&sess->bufs_recycle);
904 INIT_WORK(&sess->esparser_queue_work, esparser_queue_all_src);
905 mutex_init(&sess->lock);
906 mutex_init(&sess->bufs_recycle_lock);
907 spin_lock_init(&sess->ts_spinlock);
908
909 v4l2_fh_init(&sess->fh, core->vdev_dec);
910 sess->fh.ctrl_handler = &sess->ctrl_handler;
911 v4l2_fh_add(&sess->fh, file);
912 sess->fh.m2m_ctx = sess->m2m_ctx;
913
914 return 0;
915
916 err_m2m_release:
917 v4l2_m2m_release(sess->m2m_dev);
918 err_free_sess:
919 kfree(sess);
920 return ret;
921 }
922
vdec_close(struct file * file)923 static int vdec_close(struct file *file)
924 {
925 struct amvdec_session *sess = file_to_amvdec_session(file);
926
927 v4l2_m2m_ctx_release(sess->m2m_ctx);
928 v4l2_m2m_release(sess->m2m_dev);
929 v4l2_fh_del(&sess->fh, file);
930 v4l2_fh_exit(&sess->fh);
931
932 mutex_destroy(&sess->lock);
933 mutex_destroy(&sess->bufs_recycle_lock);
934
935 kfree(sess);
936
937 return 0;
938 }
939
940 static const struct v4l2_file_operations vdec_fops = {
941 .owner = THIS_MODULE,
942 .open = vdec_open,
943 .release = vdec_close,
944 .unlocked_ioctl = video_ioctl2,
945 .poll = v4l2_m2m_fop_poll,
946 .mmap = v4l2_m2m_fop_mmap,
947 };
948
vdec_isr(int irq,void * data)949 static irqreturn_t vdec_isr(int irq, void *data)
950 {
951 struct amvdec_core *core = data;
952 struct amvdec_session *sess = core->cur_sess;
953
954 sess->last_irq_jiffies = get_jiffies_64();
955
956 return sess->fmt_out->codec_ops->isr(sess);
957 }
958
vdec_threaded_isr(int irq,void * data)959 static irqreturn_t vdec_threaded_isr(int irq, void *data)
960 {
961 struct amvdec_core *core = data;
962 struct amvdec_session *sess = core->cur_sess;
963
964 return sess->fmt_out->codec_ops->threaded_isr(sess);
965 }
966
967 static const struct of_device_id vdec_dt_match[] = {
968 { .compatible = "amlogic,gxbb-vdec",
969 .data = &vdec_platform_gxbb },
970 { .compatible = "amlogic,gxm-vdec",
971 .data = &vdec_platform_gxm },
972 { .compatible = "amlogic,gxl-vdec",
973 .data = &vdec_platform_gxl },
974 { .compatible = "amlogic,gxlx-vdec",
975 .data = &vdec_platform_gxlx },
976 { .compatible = "amlogic,g12a-vdec",
977 .data = &vdec_platform_g12a },
978 { .compatible = "amlogic,sm1-vdec",
979 .data = &vdec_platform_sm1 },
980 {}
981 };
982 MODULE_DEVICE_TABLE(of, vdec_dt_match);
983
vdec_probe(struct platform_device * pdev)984 static int vdec_probe(struct platform_device *pdev)
985 {
986 struct device *dev = &pdev->dev;
987 struct video_device *vdev;
988 struct amvdec_core *core;
989 const struct of_device_id *of_id;
990 int irq;
991 int ret;
992
993 core = devm_kzalloc(dev, sizeof(*core), GFP_KERNEL);
994 if (!core)
995 return -ENOMEM;
996
997 core->dev = dev;
998 platform_set_drvdata(pdev, core);
999
1000 core->dos_base = devm_platform_ioremap_resource_byname(pdev, "dos");
1001 if (IS_ERR(core->dos_base))
1002 return PTR_ERR(core->dos_base);
1003
1004 core->esparser_base = devm_platform_ioremap_resource_byname(pdev, "esparser");
1005 if (IS_ERR(core->esparser_base))
1006 return PTR_ERR(core->esparser_base);
1007
1008 core->regmap_ao =
1009 syscon_regmap_lookup_by_phandle(dev->of_node,
1010 "amlogic,ao-sysctrl");
1011 if (IS_ERR(core->regmap_ao)) {
1012 dev_err(dev, "Couldn't regmap AO sysctrl\n");
1013 return PTR_ERR(core->regmap_ao);
1014 }
1015
1016 core->canvas = meson_canvas_get(dev);
1017 if (IS_ERR(core->canvas))
1018 return PTR_ERR(core->canvas);
1019
1020 of_id = of_match_node(vdec_dt_match, dev->of_node);
1021 core->platform = of_id->data;
1022
1023 if (core->platform->revision == VDEC_REVISION_G12A ||
1024 core->platform->revision == VDEC_REVISION_SM1) {
1025 core->vdec_hevcf_clk = devm_clk_get(dev, "vdec_hevcf");
1026 if (IS_ERR(core->vdec_hevcf_clk))
1027 return -EPROBE_DEFER;
1028 }
1029
1030 core->dos_parser_clk = devm_clk_get(dev, "dos_parser");
1031 if (IS_ERR(core->dos_parser_clk))
1032 return -EPROBE_DEFER;
1033
1034 core->dos_clk = devm_clk_get(dev, "dos");
1035 if (IS_ERR(core->dos_clk))
1036 return -EPROBE_DEFER;
1037
1038 core->vdec_1_clk = devm_clk_get(dev, "vdec_1");
1039 if (IS_ERR(core->vdec_1_clk))
1040 return -EPROBE_DEFER;
1041
1042 core->vdec_hevc_clk = devm_clk_get(dev, "vdec_hevc");
1043 if (IS_ERR(core->vdec_hevc_clk))
1044 return -EPROBE_DEFER;
1045
1046 irq = platform_get_irq_byname(pdev, "vdec");
1047 if (irq < 0)
1048 return irq;
1049
1050 ret = devm_request_threaded_irq(core->dev, irq, vdec_isr,
1051 vdec_threaded_isr, IRQF_ONESHOT,
1052 "vdec", core);
1053 if (ret)
1054 return ret;
1055
1056 ret = esparser_init(pdev, core);
1057 if (ret)
1058 return ret;
1059
1060 ret = v4l2_device_register(dev, &core->v4l2_dev);
1061 if (ret) {
1062 dev_err(dev, "Couldn't register v4l2 device\n");
1063 return -ENOMEM;
1064 }
1065
1066 vdev = video_device_alloc();
1067 if (!vdev) {
1068 ret = -ENOMEM;
1069 goto err_vdev_release;
1070 }
1071
1072 core->vdev_dec = vdev;
1073 core->dev_dec = dev;
1074 mutex_init(&core->lock);
1075
1076 strscpy(vdev->name, "meson-video-decoder", sizeof(vdev->name));
1077 vdev->release = video_device_release;
1078 vdev->fops = &vdec_fops;
1079 vdev->ioctl_ops = &vdec_ioctl_ops;
1080 vdev->vfl_dir = VFL_DIR_M2M;
1081 vdev->v4l2_dev = &core->v4l2_dev;
1082 vdev->lock = &core->lock;
1083 vdev->device_caps = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_STREAMING;
1084
1085 video_set_drvdata(vdev, core);
1086
1087 ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
1088 if (ret) {
1089 dev_err(dev, "Failed registering video device\n");
1090 goto err_vdev_release;
1091 }
1092
1093 return 0;
1094
1095 err_vdev_release:
1096 video_device_release(vdev);
1097 v4l2_device_unregister(&core->v4l2_dev);
1098 return ret;
1099 }
1100
vdec_remove(struct platform_device * pdev)1101 static void vdec_remove(struct platform_device *pdev)
1102 {
1103 struct amvdec_core *core = platform_get_drvdata(pdev);
1104
1105 video_unregister_device(core->vdev_dec);
1106 v4l2_device_unregister(&core->v4l2_dev);
1107 }
1108
1109 static struct platform_driver meson_vdec_driver = {
1110 .probe = vdec_probe,
1111 .remove = vdec_remove,
1112 .driver = {
1113 .name = "meson-vdec",
1114 .of_match_table = vdec_dt_match,
1115 },
1116 };
1117 module_platform_driver(meson_vdec_driver);
1118
1119 MODULE_DESCRIPTION("Meson video decoder driver for GXBB/GXL/GXM/G12/SM1");
1120 MODULE_AUTHOR("Maxime Jourdan <mjourdan@baylibre.com>");
1121 MODULE_LICENSE("GPL");
1122