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