1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Rockchip Video Decoder driver
4 *
5 * Copyright (C) 2019 Collabora, Ltd.
6 *
7 * Based on rkvdec driver by Google LLC. (Tomasz Figa <tfiga@chromium.org>)
8 * Based on s5p-mfc driver by Samsung Electronics Co., Ltd.
9 * Copyright (C) 2011 Samsung Electronics Co., Ltd.
10 */
11
12 #include <linux/clk.h>
13 #include <linux/interrupt.h>
14 #include <linux/module.h>
15 #include <linux/of.h>
16 #include <linux/platform_device.h>
17 #include <linux/pm.h>
18 #include <linux/pm_runtime.h>
19 #include <linux/slab.h>
20 #include <linux/videodev2.h>
21 #include <linux/workqueue.h>
22 #include <media/v4l2-event.h>
23 #include <media/v4l2-mem2mem.h>
24 #include <media/videobuf2-core.h>
25 #include <media/videobuf2-vmalloc.h>
26
27 #include "rkvdec.h"
28 #include "rkvdec-regs.h"
29
rkvdec_try_ctrl(struct v4l2_ctrl * ctrl)30 static int rkvdec_try_ctrl(struct v4l2_ctrl *ctrl)
31 {
32 if (ctrl->id == V4L2_CID_STATELESS_H264_SPS) {
33 const struct v4l2_ctrl_h264_sps *sps = ctrl->p_new.p_h264_sps;
34 /*
35 * TODO: The hardware supports 10-bit and 4:2:2 profiles,
36 * but it's currently broken in the driver.
37 * Reject them for now, until it's fixed.
38 */
39 if (sps->chroma_format_idc > 1)
40 /* Only 4:0:0 and 4:2:0 are supported */
41 return -EINVAL;
42 if (sps->bit_depth_luma_minus8 != sps->bit_depth_chroma_minus8)
43 /* Luma and chroma bit depth mismatch */
44 return -EINVAL;
45 if (sps->bit_depth_luma_minus8 != 0)
46 /* Only 8-bit is supported */
47 return -EINVAL;
48 }
49 return 0;
50 }
51
52 static const struct v4l2_ctrl_ops rkvdec_ctrl_ops = {
53 .try_ctrl = rkvdec_try_ctrl,
54 };
55
56 static const struct rkvdec_ctrl_desc rkvdec_h264_ctrl_descs[] = {
57 {
58 .cfg.id = V4L2_CID_STATELESS_H264_DECODE_PARAMS,
59 },
60 {
61 .cfg.id = V4L2_CID_STATELESS_H264_SPS,
62 .cfg.ops = &rkvdec_ctrl_ops,
63 },
64 {
65 .cfg.id = V4L2_CID_STATELESS_H264_PPS,
66 },
67 {
68 .cfg.id = V4L2_CID_STATELESS_H264_SCALING_MATRIX,
69 },
70 {
71 .cfg.id = V4L2_CID_STATELESS_H264_DECODE_MODE,
72 .cfg.min = V4L2_STATELESS_H264_DECODE_MODE_FRAME_BASED,
73 .cfg.max = V4L2_STATELESS_H264_DECODE_MODE_FRAME_BASED,
74 .cfg.def = V4L2_STATELESS_H264_DECODE_MODE_FRAME_BASED,
75 },
76 {
77 .cfg.id = V4L2_CID_STATELESS_H264_START_CODE,
78 .cfg.min = V4L2_STATELESS_H264_START_CODE_ANNEX_B,
79 .cfg.def = V4L2_STATELESS_H264_START_CODE_ANNEX_B,
80 .cfg.max = V4L2_STATELESS_H264_START_CODE_ANNEX_B,
81 },
82 {
83 .cfg.id = V4L2_CID_MPEG_VIDEO_H264_PROFILE,
84 .cfg.min = V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE,
85 .cfg.max = V4L2_MPEG_VIDEO_H264_PROFILE_HIGH,
86 .cfg.menu_skip_mask =
87 BIT(V4L2_MPEG_VIDEO_H264_PROFILE_EXTENDED),
88 .cfg.def = V4L2_MPEG_VIDEO_H264_PROFILE_MAIN,
89 },
90 {
91 .cfg.id = V4L2_CID_MPEG_VIDEO_H264_LEVEL,
92 .cfg.min = V4L2_MPEG_VIDEO_H264_LEVEL_1_0,
93 .cfg.max = V4L2_MPEG_VIDEO_H264_LEVEL_5_1,
94 },
95 };
96
97 static const struct rkvdec_ctrls rkvdec_h264_ctrls = {
98 .ctrls = rkvdec_h264_ctrl_descs,
99 .num_ctrls = ARRAY_SIZE(rkvdec_h264_ctrl_descs),
100 };
101
102 static const u32 rkvdec_h264_decoded_fmts[] = {
103 V4L2_PIX_FMT_NV12,
104 };
105
106 static const struct rkvdec_coded_fmt_desc rkvdec_coded_fmts[] = {
107 {
108 .fourcc = V4L2_PIX_FMT_H264_SLICE,
109 .frmsize = {
110 .min_width = 48,
111 .max_width = 4096,
112 .step_width = 16,
113 .min_height = 48,
114 .max_height = 2304,
115 .step_height = 16,
116 },
117 .ctrls = &rkvdec_h264_ctrls,
118 .ops = &rkvdec_h264_fmt_ops,
119 .num_decoded_fmts = ARRAY_SIZE(rkvdec_h264_decoded_fmts),
120 .decoded_fmts = rkvdec_h264_decoded_fmts,
121 }
122 };
123
124 static const struct rkvdec_coded_fmt_desc *
rkvdec_find_coded_fmt_desc(u32 fourcc)125 rkvdec_find_coded_fmt_desc(u32 fourcc)
126 {
127 unsigned int i;
128
129 for (i = 0; i < ARRAY_SIZE(rkvdec_coded_fmts); i++) {
130 if (rkvdec_coded_fmts[i].fourcc == fourcc)
131 return &rkvdec_coded_fmts[i];
132 }
133
134 return NULL;
135 }
136
rkvdec_reset_fmt(struct rkvdec_ctx * ctx,struct v4l2_format * f,u32 fourcc)137 static void rkvdec_reset_fmt(struct rkvdec_ctx *ctx, struct v4l2_format *f,
138 u32 fourcc)
139 {
140 memset(f, 0, sizeof(*f));
141 f->fmt.pix_mp.pixelformat = fourcc;
142 f->fmt.pix_mp.field = V4L2_FIELD_NONE;
143 f->fmt.pix_mp.colorspace = V4L2_COLORSPACE_REC709;
144 f->fmt.pix_mp.ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
145 f->fmt.pix_mp.quantization = V4L2_QUANTIZATION_DEFAULT;
146 f->fmt.pix_mp.xfer_func = V4L2_XFER_FUNC_DEFAULT;
147 }
148
rkvdec_reset_coded_fmt(struct rkvdec_ctx * ctx)149 static void rkvdec_reset_coded_fmt(struct rkvdec_ctx *ctx)
150 {
151 struct v4l2_format *f = &ctx->coded_fmt;
152
153 ctx->coded_fmt_desc = &rkvdec_coded_fmts[0];
154 rkvdec_reset_fmt(ctx, f, ctx->coded_fmt_desc->fourcc);
155
156 f->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
157 f->fmt.pix_mp.width = ctx->coded_fmt_desc->frmsize.min_width;
158 f->fmt.pix_mp.height = ctx->coded_fmt_desc->frmsize.min_height;
159
160 if (ctx->coded_fmt_desc->ops->adjust_fmt)
161 ctx->coded_fmt_desc->ops->adjust_fmt(ctx, f);
162 }
163
rkvdec_reset_decoded_fmt(struct rkvdec_ctx * ctx)164 static void rkvdec_reset_decoded_fmt(struct rkvdec_ctx *ctx)
165 {
166 struct v4l2_format *f = &ctx->decoded_fmt;
167
168 rkvdec_reset_fmt(ctx, f, ctx->coded_fmt_desc->decoded_fmts[0]);
169 f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
170 v4l2_fill_pixfmt_mp(&f->fmt.pix_mp,
171 ctx->coded_fmt_desc->decoded_fmts[0],
172 ctx->coded_fmt.fmt.pix_mp.width,
173 ctx->coded_fmt.fmt.pix_mp.height);
174 f->fmt.pix_mp.plane_fmt[0].sizeimage += 128 *
175 DIV_ROUND_UP(f->fmt.pix_mp.width, 16) *
176 DIV_ROUND_UP(f->fmt.pix_mp.height, 16);
177 }
178
rkvdec_enum_framesizes(struct file * file,void * priv,struct v4l2_frmsizeenum * fsize)179 static int rkvdec_enum_framesizes(struct file *file, void *priv,
180 struct v4l2_frmsizeenum *fsize)
181 {
182 const struct rkvdec_coded_fmt_desc *fmt;
183
184 if (fsize->index != 0)
185 return -EINVAL;
186
187 fmt = rkvdec_find_coded_fmt_desc(fsize->pixel_format);
188 if (!fmt)
189 return -EINVAL;
190
191 fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
192 fsize->stepwise = fmt->frmsize;
193 return 0;
194 }
195
rkvdec_querycap(struct file * file,void * priv,struct v4l2_capability * cap)196 static int rkvdec_querycap(struct file *file, void *priv,
197 struct v4l2_capability *cap)
198 {
199 struct rkvdec_dev *rkvdec = video_drvdata(file);
200 struct video_device *vdev = video_devdata(file);
201
202 strscpy(cap->driver, rkvdec->dev->driver->name,
203 sizeof(cap->driver));
204 strscpy(cap->card, vdev->name, sizeof(cap->card));
205 snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
206 rkvdec->dev->driver->name);
207 return 0;
208 }
209
rkvdec_try_capture_fmt(struct file * file,void * priv,struct v4l2_format * f)210 static int rkvdec_try_capture_fmt(struct file *file, void *priv,
211 struct v4l2_format *f)
212 {
213 struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
214 struct rkvdec_ctx *ctx = fh_to_rkvdec_ctx(priv);
215 const struct rkvdec_coded_fmt_desc *coded_desc;
216 unsigned int i;
217
218 /*
219 * The codec context should point to a coded format desc, if the format
220 * on the coded end has not been set yet, it should point to the
221 * default value.
222 */
223 coded_desc = ctx->coded_fmt_desc;
224 if (WARN_ON(!coded_desc))
225 return -EINVAL;
226
227 for (i = 0; i < coded_desc->num_decoded_fmts; i++) {
228 if (coded_desc->decoded_fmts[i] == pix_mp->pixelformat)
229 break;
230 }
231
232 if (i == coded_desc->num_decoded_fmts)
233 pix_mp->pixelformat = coded_desc->decoded_fmts[0];
234
235 /* Always apply the frmsize constraint of the coded end. */
236 v4l2_apply_frmsize_constraints(&pix_mp->width,
237 &pix_mp->height,
238 &coded_desc->frmsize);
239
240 v4l2_fill_pixfmt_mp(pix_mp, pix_mp->pixelformat,
241 pix_mp->width, pix_mp->height);
242 pix_mp->plane_fmt[0].sizeimage +=
243 128 *
244 DIV_ROUND_UP(pix_mp->width, 16) *
245 DIV_ROUND_UP(pix_mp->height, 16);
246 pix_mp->field = V4L2_FIELD_NONE;
247
248 return 0;
249 }
250
rkvdec_try_output_fmt(struct file * file,void * priv,struct v4l2_format * f)251 static int rkvdec_try_output_fmt(struct file *file, void *priv,
252 struct v4l2_format *f)
253 {
254 struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
255 struct rkvdec_ctx *ctx = fh_to_rkvdec_ctx(priv);
256 const struct rkvdec_coded_fmt_desc *desc;
257
258 desc = rkvdec_find_coded_fmt_desc(pix_mp->pixelformat);
259 if (!desc) {
260 pix_mp->pixelformat = rkvdec_coded_fmts[0].fourcc;
261 desc = &rkvdec_coded_fmts[0];
262 }
263
264 v4l2_apply_frmsize_constraints(&pix_mp->width,
265 &pix_mp->height,
266 &desc->frmsize);
267
268 pix_mp->field = V4L2_FIELD_NONE;
269 /* All coded formats are considered single planar for now. */
270 pix_mp->num_planes = 1;
271
272 if (desc->ops->adjust_fmt) {
273 int ret;
274
275 ret = desc->ops->adjust_fmt(ctx, f);
276 if (ret)
277 return ret;
278 }
279
280 return 0;
281 }
282
rkvdec_s_fmt(struct file * file,void * priv,struct v4l2_format * f,int (* try_fmt)(struct file *,void *,struct v4l2_format *))283 static int rkvdec_s_fmt(struct file *file, void *priv,
284 struct v4l2_format *f,
285 int (*try_fmt)(struct file *, void *,
286 struct v4l2_format *))
287 {
288 struct rkvdec_ctx *ctx = fh_to_rkvdec_ctx(priv);
289 struct vb2_queue *vq;
290
291 if (!try_fmt)
292 return -EINVAL;
293
294 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
295 if (vb2_is_busy(vq))
296 return -EBUSY;
297
298 return try_fmt(file, priv, f);
299 }
300
rkvdec_s_capture_fmt(struct file * file,void * priv,struct v4l2_format * f)301 static int rkvdec_s_capture_fmt(struct file *file, void *priv,
302 struct v4l2_format *f)
303 {
304 struct rkvdec_ctx *ctx = fh_to_rkvdec_ctx(priv);
305 int ret;
306
307 ret = rkvdec_s_fmt(file, priv, f, rkvdec_try_capture_fmt);
308 if (ret)
309 return ret;
310
311 ctx->decoded_fmt = *f;
312 return 0;
313 }
314
rkvdec_s_output_fmt(struct file * file,void * priv,struct v4l2_format * f)315 static int rkvdec_s_output_fmt(struct file *file, void *priv,
316 struct v4l2_format *f)
317 {
318 struct rkvdec_ctx *ctx = fh_to_rkvdec_ctx(priv);
319 struct v4l2_m2m_ctx *m2m_ctx = ctx->fh.m2m_ctx;
320 const struct rkvdec_coded_fmt_desc *desc;
321 struct v4l2_format *cap_fmt;
322 struct vb2_queue *peer_vq;
323 int ret;
324
325 /*
326 * Since format change on the OUTPUT queue will reset the CAPTURE
327 * queue, we can't allow doing so when the CAPTURE queue has buffers
328 * allocated.
329 */
330 peer_vq = v4l2_m2m_get_vq(m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
331 if (vb2_is_busy(peer_vq))
332 return -EBUSY;
333
334 ret = rkvdec_s_fmt(file, priv, f, rkvdec_try_output_fmt);
335 if (ret)
336 return ret;
337
338 desc = rkvdec_find_coded_fmt_desc(f->fmt.pix_mp.pixelformat);
339 if (!desc)
340 return -EINVAL;
341 ctx->coded_fmt_desc = desc;
342 ctx->coded_fmt = *f;
343
344 /*
345 * Current decoded format might have become invalid with newly
346 * selected codec, so reset it to default just to be safe and
347 * keep internal driver state sane. User is mandated to set
348 * the decoded format again after we return, so we don't need
349 * anything smarter.
350 *
351 * Note that this will propagates any size changes to the decoded format.
352 */
353 rkvdec_reset_decoded_fmt(ctx);
354
355 /* Propagate colorspace information to capture. */
356 cap_fmt = &ctx->decoded_fmt;
357 cap_fmt->fmt.pix_mp.colorspace = f->fmt.pix_mp.colorspace;
358 cap_fmt->fmt.pix_mp.xfer_func = f->fmt.pix_mp.xfer_func;
359 cap_fmt->fmt.pix_mp.ycbcr_enc = f->fmt.pix_mp.ycbcr_enc;
360 cap_fmt->fmt.pix_mp.quantization = f->fmt.pix_mp.quantization;
361
362 return 0;
363 }
364
rkvdec_g_output_fmt(struct file * file,void * priv,struct v4l2_format * f)365 static int rkvdec_g_output_fmt(struct file *file, void *priv,
366 struct v4l2_format *f)
367 {
368 struct rkvdec_ctx *ctx = fh_to_rkvdec_ctx(priv);
369
370 *f = ctx->coded_fmt;
371 return 0;
372 }
373
rkvdec_g_capture_fmt(struct file * file,void * priv,struct v4l2_format * f)374 static int rkvdec_g_capture_fmt(struct file *file, void *priv,
375 struct v4l2_format *f)
376 {
377 struct rkvdec_ctx *ctx = fh_to_rkvdec_ctx(priv);
378
379 *f = ctx->decoded_fmt;
380 return 0;
381 }
382
rkvdec_enum_output_fmt(struct file * file,void * priv,struct v4l2_fmtdesc * f)383 static int rkvdec_enum_output_fmt(struct file *file, void *priv,
384 struct v4l2_fmtdesc *f)
385 {
386 if (f->index >= ARRAY_SIZE(rkvdec_coded_fmts))
387 return -EINVAL;
388
389 f->pixelformat = rkvdec_coded_fmts[f->index].fourcc;
390 return 0;
391 }
392
rkvdec_enum_capture_fmt(struct file * file,void * priv,struct v4l2_fmtdesc * f)393 static int rkvdec_enum_capture_fmt(struct file *file, void *priv,
394 struct v4l2_fmtdesc *f)
395 {
396 struct rkvdec_ctx *ctx = fh_to_rkvdec_ctx(priv);
397
398 if (WARN_ON(!ctx->coded_fmt_desc))
399 return -EINVAL;
400
401 if (f->index >= ctx->coded_fmt_desc->num_decoded_fmts)
402 return -EINVAL;
403
404 f->pixelformat = ctx->coded_fmt_desc->decoded_fmts[f->index];
405 return 0;
406 }
407
408 static const struct v4l2_ioctl_ops rkvdec_ioctl_ops = {
409 .vidioc_querycap = rkvdec_querycap,
410 .vidioc_enum_framesizes = rkvdec_enum_framesizes,
411
412 .vidioc_try_fmt_vid_cap_mplane = rkvdec_try_capture_fmt,
413 .vidioc_try_fmt_vid_out_mplane = rkvdec_try_output_fmt,
414 .vidioc_s_fmt_vid_out_mplane = rkvdec_s_output_fmt,
415 .vidioc_s_fmt_vid_cap_mplane = rkvdec_s_capture_fmt,
416 .vidioc_g_fmt_vid_out_mplane = rkvdec_g_output_fmt,
417 .vidioc_g_fmt_vid_cap_mplane = rkvdec_g_capture_fmt,
418 .vidioc_enum_fmt_vid_out = rkvdec_enum_output_fmt,
419 .vidioc_enum_fmt_vid_cap = rkvdec_enum_capture_fmt,
420
421 .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
422 .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
423 .vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
424 .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
425 .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
426 .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
427 .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
428
429 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
430 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
431
432 .vidioc_streamon = v4l2_m2m_ioctl_streamon,
433 .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
434 };
435
rkvdec_queue_setup(struct vb2_queue * vq,unsigned int * num_buffers,unsigned int * num_planes,unsigned int sizes[],struct device * alloc_devs[])436 static int rkvdec_queue_setup(struct vb2_queue *vq, unsigned int *num_buffers,
437 unsigned int *num_planes, unsigned int sizes[],
438 struct device *alloc_devs[])
439 {
440 struct rkvdec_ctx *ctx = vb2_get_drv_priv(vq);
441 struct v4l2_format *f;
442 unsigned int i;
443
444 if (V4L2_TYPE_IS_OUTPUT(vq->type))
445 f = &ctx->coded_fmt;
446 else
447 f = &ctx->decoded_fmt;
448
449 if (*num_planes) {
450 if (*num_planes != f->fmt.pix_mp.num_planes)
451 return -EINVAL;
452
453 for (i = 0; i < f->fmt.pix_mp.num_planes; i++) {
454 if (sizes[i] < f->fmt.pix_mp.plane_fmt[i].sizeimage)
455 return -EINVAL;
456 }
457 } else {
458 *num_planes = f->fmt.pix_mp.num_planes;
459 for (i = 0; i < f->fmt.pix_mp.num_planes; i++)
460 sizes[i] = f->fmt.pix_mp.plane_fmt[i].sizeimage;
461 }
462
463 return 0;
464 }
465
rkvdec_buf_prepare(struct vb2_buffer * vb)466 static int rkvdec_buf_prepare(struct vb2_buffer *vb)
467 {
468 struct vb2_queue *vq = vb->vb2_queue;
469 struct rkvdec_ctx *ctx = vb2_get_drv_priv(vq);
470 struct v4l2_format *f;
471 unsigned int i;
472
473 if (V4L2_TYPE_IS_OUTPUT(vq->type))
474 f = &ctx->coded_fmt;
475 else
476 f = &ctx->decoded_fmt;
477
478 for (i = 0; i < f->fmt.pix_mp.num_planes; ++i) {
479 u32 sizeimage = f->fmt.pix_mp.plane_fmt[i].sizeimage;
480
481 if (vb2_plane_size(vb, i) < sizeimage)
482 return -EINVAL;
483 }
484 vb2_set_plane_payload(vb, 0, f->fmt.pix_mp.plane_fmt[0].sizeimage);
485 return 0;
486 }
487
rkvdec_buf_queue(struct vb2_buffer * vb)488 static void rkvdec_buf_queue(struct vb2_buffer *vb)
489 {
490 struct rkvdec_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
491 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
492
493 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
494 }
495
rkvdec_buf_out_validate(struct vb2_buffer * vb)496 static int rkvdec_buf_out_validate(struct vb2_buffer *vb)
497 {
498 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
499
500 vbuf->field = V4L2_FIELD_NONE;
501 return 0;
502 }
503
rkvdec_buf_request_complete(struct vb2_buffer * vb)504 static void rkvdec_buf_request_complete(struct vb2_buffer *vb)
505 {
506 struct rkvdec_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
507
508 v4l2_ctrl_request_complete(vb->req_obj.req, &ctx->ctrl_hdl);
509 }
510
rkvdec_start_streaming(struct vb2_queue * q,unsigned int count)511 static int rkvdec_start_streaming(struct vb2_queue *q, unsigned int count)
512 {
513 struct rkvdec_ctx *ctx = vb2_get_drv_priv(q);
514 const struct rkvdec_coded_fmt_desc *desc;
515 int ret;
516
517 if (V4L2_TYPE_IS_CAPTURE(q->type))
518 return 0;
519
520 desc = ctx->coded_fmt_desc;
521 if (WARN_ON(!desc))
522 return -EINVAL;
523
524 if (desc->ops->start) {
525 ret = desc->ops->start(ctx);
526 if (ret)
527 return ret;
528 }
529
530 return 0;
531 }
532
rkvdec_queue_cleanup(struct vb2_queue * vq,u32 state)533 static void rkvdec_queue_cleanup(struct vb2_queue *vq, u32 state)
534 {
535 struct rkvdec_ctx *ctx = vb2_get_drv_priv(vq);
536
537 while (true) {
538 struct vb2_v4l2_buffer *vbuf;
539
540 if (V4L2_TYPE_IS_OUTPUT(vq->type))
541 vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
542 else
543 vbuf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
544
545 if (!vbuf)
546 break;
547
548 v4l2_ctrl_request_complete(vbuf->vb2_buf.req_obj.req,
549 &ctx->ctrl_hdl);
550 v4l2_m2m_buf_done(vbuf, state);
551 }
552 }
553
rkvdec_stop_streaming(struct vb2_queue * q)554 static void rkvdec_stop_streaming(struct vb2_queue *q)
555 {
556 struct rkvdec_ctx *ctx = vb2_get_drv_priv(q);
557
558 if (V4L2_TYPE_IS_OUTPUT(q->type)) {
559 const struct rkvdec_coded_fmt_desc *desc = ctx->coded_fmt_desc;
560
561 if (WARN_ON(!desc))
562 return;
563
564 if (desc->ops->stop)
565 desc->ops->stop(ctx);
566 }
567
568 rkvdec_queue_cleanup(q, VB2_BUF_STATE_ERROR);
569 }
570
571 static const struct vb2_ops rkvdec_queue_ops = {
572 .queue_setup = rkvdec_queue_setup,
573 .buf_prepare = rkvdec_buf_prepare,
574 .buf_queue = rkvdec_buf_queue,
575 .buf_out_validate = rkvdec_buf_out_validate,
576 .buf_request_complete = rkvdec_buf_request_complete,
577 .start_streaming = rkvdec_start_streaming,
578 .stop_streaming = rkvdec_stop_streaming,
579 .wait_prepare = vb2_ops_wait_prepare,
580 .wait_finish = vb2_ops_wait_finish,
581 };
582
rkvdec_request_validate(struct media_request * req)583 static int rkvdec_request_validate(struct media_request *req)
584 {
585 unsigned int count;
586
587 count = vb2_request_buffer_cnt(req);
588 if (!count)
589 return -ENOENT;
590 else if (count > 1)
591 return -EINVAL;
592
593 return vb2_request_validate(req);
594 }
595
596 static const struct media_device_ops rkvdec_media_ops = {
597 .req_validate = rkvdec_request_validate,
598 .req_queue = v4l2_m2m_request_queue,
599 };
600
rkvdec_job_finish_no_pm(struct rkvdec_ctx * ctx,enum vb2_buffer_state result)601 static void rkvdec_job_finish_no_pm(struct rkvdec_ctx *ctx,
602 enum vb2_buffer_state result)
603 {
604 if (ctx->coded_fmt_desc->ops->done) {
605 struct vb2_v4l2_buffer *src_buf, *dst_buf;
606
607 src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
608 dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
609 ctx->coded_fmt_desc->ops->done(ctx, src_buf, dst_buf, result);
610 }
611
612 v4l2_m2m_buf_done_and_job_finish(ctx->dev->m2m_dev, ctx->fh.m2m_ctx,
613 result);
614 }
615
rkvdec_job_finish(struct rkvdec_ctx * ctx,enum vb2_buffer_state result)616 static void rkvdec_job_finish(struct rkvdec_ctx *ctx,
617 enum vb2_buffer_state result)
618 {
619 struct rkvdec_dev *rkvdec = ctx->dev;
620
621 pm_runtime_mark_last_busy(rkvdec->dev);
622 pm_runtime_put_autosuspend(rkvdec->dev);
623 rkvdec_job_finish_no_pm(ctx, result);
624 }
625
rkvdec_run_preamble(struct rkvdec_ctx * ctx,struct rkvdec_run * run)626 void rkvdec_run_preamble(struct rkvdec_ctx *ctx, struct rkvdec_run *run)
627 {
628 struct media_request *src_req;
629
630 memset(run, 0, sizeof(*run));
631
632 run->bufs.src = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
633 run->bufs.dst = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
634
635 /* Apply request(s) controls if needed. */
636 src_req = run->bufs.src->vb2_buf.req_obj.req;
637 if (src_req)
638 v4l2_ctrl_request_setup(src_req, &ctx->ctrl_hdl);
639
640 v4l2_m2m_buf_copy_metadata(run->bufs.src, run->bufs.dst, true);
641 }
642
rkvdec_run_postamble(struct rkvdec_ctx * ctx,struct rkvdec_run * run)643 void rkvdec_run_postamble(struct rkvdec_ctx *ctx, struct rkvdec_run *run)
644 {
645 struct media_request *src_req = run->bufs.src->vb2_buf.req_obj.req;
646
647 if (src_req)
648 v4l2_ctrl_request_complete(src_req, &ctx->ctrl_hdl);
649 }
650
rkvdec_device_run(void * priv)651 static void rkvdec_device_run(void *priv)
652 {
653 struct rkvdec_ctx *ctx = priv;
654 struct rkvdec_dev *rkvdec = ctx->dev;
655 const struct rkvdec_coded_fmt_desc *desc = ctx->coded_fmt_desc;
656 int ret;
657
658 if (WARN_ON(!desc))
659 return;
660
661 ret = pm_runtime_get_sync(rkvdec->dev);
662 if (ret < 0) {
663 rkvdec_job_finish_no_pm(ctx, VB2_BUF_STATE_ERROR);
664 return;
665 }
666
667 ret = desc->ops->run(ctx);
668 if (ret)
669 rkvdec_job_finish(ctx, VB2_BUF_STATE_ERROR);
670 }
671
672 static struct v4l2_m2m_ops rkvdec_m2m_ops = {
673 .device_run = rkvdec_device_run,
674 };
675
rkvdec_queue_init(void * priv,struct vb2_queue * src_vq,struct vb2_queue * dst_vq)676 static int rkvdec_queue_init(void *priv,
677 struct vb2_queue *src_vq,
678 struct vb2_queue *dst_vq)
679 {
680 struct rkvdec_ctx *ctx = priv;
681 struct rkvdec_dev *rkvdec = ctx->dev;
682 int ret;
683
684 src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
685 src_vq->io_modes = VB2_MMAP | VB2_DMABUF;
686 src_vq->drv_priv = ctx;
687 src_vq->ops = &rkvdec_queue_ops;
688 src_vq->mem_ops = &vb2_dma_contig_memops;
689
690 /*
691 * Driver does mostly sequential access, so sacrifice TLB efficiency
692 * for faster allocation. Also, no CPU access on the source queue,
693 * so no kernel mapping needed.
694 */
695 src_vq->dma_attrs = DMA_ATTR_ALLOC_SINGLE_PAGES |
696 DMA_ATTR_NO_KERNEL_MAPPING;
697 src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
698 src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
699 src_vq->lock = &rkvdec->vdev_lock;
700 src_vq->dev = rkvdec->v4l2_dev.dev;
701 src_vq->supports_requests = true;
702 src_vq->requires_requests = true;
703
704 ret = vb2_queue_init(src_vq);
705 if (ret)
706 return ret;
707
708 dst_vq->bidirectional = true;
709 dst_vq->mem_ops = &vb2_dma_contig_memops;
710 dst_vq->dma_attrs = DMA_ATTR_ALLOC_SINGLE_PAGES |
711 DMA_ATTR_NO_KERNEL_MAPPING;
712 dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
713 dst_vq->io_modes = VB2_MMAP | VB2_DMABUF;
714 dst_vq->drv_priv = ctx;
715 dst_vq->ops = &rkvdec_queue_ops;
716 dst_vq->buf_struct_size = sizeof(struct rkvdec_decoded_buffer);
717 dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
718 dst_vq->lock = &rkvdec->vdev_lock;
719 dst_vq->dev = rkvdec->v4l2_dev.dev;
720
721 return vb2_queue_init(dst_vq);
722 }
723
rkvdec_add_ctrls(struct rkvdec_ctx * ctx,const struct rkvdec_ctrls * ctrls)724 static int rkvdec_add_ctrls(struct rkvdec_ctx *ctx,
725 const struct rkvdec_ctrls *ctrls)
726 {
727 unsigned int i;
728
729 for (i = 0; i < ctrls->num_ctrls; i++) {
730 const struct v4l2_ctrl_config *cfg = &ctrls->ctrls[i].cfg;
731
732 v4l2_ctrl_new_custom(&ctx->ctrl_hdl, cfg, ctx);
733 if (ctx->ctrl_hdl.error)
734 return ctx->ctrl_hdl.error;
735 }
736
737 return 0;
738 }
739
rkvdec_init_ctrls(struct rkvdec_ctx * ctx)740 static int rkvdec_init_ctrls(struct rkvdec_ctx *ctx)
741 {
742 unsigned int i, nctrls = 0;
743 int ret;
744
745 for (i = 0; i < ARRAY_SIZE(rkvdec_coded_fmts); i++)
746 nctrls += rkvdec_coded_fmts[i].ctrls->num_ctrls;
747
748 v4l2_ctrl_handler_init(&ctx->ctrl_hdl, nctrls);
749
750 for (i = 0; i < ARRAY_SIZE(rkvdec_coded_fmts); i++) {
751 ret = rkvdec_add_ctrls(ctx, rkvdec_coded_fmts[i].ctrls);
752 if (ret)
753 goto err_free_handler;
754 }
755
756 ret = v4l2_ctrl_handler_setup(&ctx->ctrl_hdl);
757 if (ret)
758 goto err_free_handler;
759
760 ctx->fh.ctrl_handler = &ctx->ctrl_hdl;
761 return 0;
762
763 err_free_handler:
764 v4l2_ctrl_handler_free(&ctx->ctrl_hdl);
765 return ret;
766 }
767
rkvdec_open(struct file * filp)768 static int rkvdec_open(struct file *filp)
769 {
770 struct rkvdec_dev *rkvdec = video_drvdata(filp);
771 struct rkvdec_ctx *ctx;
772 int ret;
773
774 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
775 if (!ctx)
776 return -ENOMEM;
777
778 ctx->dev = rkvdec;
779 rkvdec_reset_coded_fmt(ctx);
780 rkvdec_reset_decoded_fmt(ctx);
781 v4l2_fh_init(&ctx->fh, video_devdata(filp));
782
783 ret = rkvdec_init_ctrls(ctx);
784 if (ret)
785 goto err_free_ctx;
786
787 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(rkvdec->m2m_dev, ctx,
788 rkvdec_queue_init);
789 if (IS_ERR(ctx->fh.m2m_ctx)) {
790 ret = PTR_ERR(ctx->fh.m2m_ctx);
791 goto err_cleanup_ctrls;
792 }
793
794 filp->private_data = &ctx->fh;
795 v4l2_fh_add(&ctx->fh);
796
797 return 0;
798
799 err_cleanup_ctrls:
800 v4l2_ctrl_handler_free(&ctx->ctrl_hdl);
801
802 err_free_ctx:
803 kfree(ctx);
804 return ret;
805 }
806
rkvdec_release(struct file * filp)807 static int rkvdec_release(struct file *filp)
808 {
809 struct rkvdec_ctx *ctx = fh_to_rkvdec_ctx(filp->private_data);
810
811 v4l2_fh_del(&ctx->fh);
812 v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
813 v4l2_ctrl_handler_free(&ctx->ctrl_hdl);
814 v4l2_fh_exit(&ctx->fh);
815 kfree(ctx);
816
817 return 0;
818 }
819
820 static const struct v4l2_file_operations rkvdec_fops = {
821 .owner = THIS_MODULE,
822 .open = rkvdec_open,
823 .release = rkvdec_release,
824 .poll = v4l2_m2m_fop_poll,
825 .unlocked_ioctl = video_ioctl2,
826 .mmap = v4l2_m2m_fop_mmap,
827 };
828
rkvdec_v4l2_init(struct rkvdec_dev * rkvdec)829 static int rkvdec_v4l2_init(struct rkvdec_dev *rkvdec)
830 {
831 int ret;
832
833 ret = v4l2_device_register(rkvdec->dev, &rkvdec->v4l2_dev);
834 if (ret) {
835 dev_err(rkvdec->dev, "Failed to register V4L2 device\n");
836 return ret;
837 }
838
839 rkvdec->m2m_dev = v4l2_m2m_init(&rkvdec_m2m_ops);
840 if (IS_ERR(rkvdec->m2m_dev)) {
841 v4l2_err(&rkvdec->v4l2_dev, "Failed to init mem2mem device\n");
842 ret = PTR_ERR(rkvdec->m2m_dev);
843 goto err_unregister_v4l2;
844 }
845
846 rkvdec->mdev.dev = rkvdec->dev;
847 strscpy(rkvdec->mdev.model, "rkvdec", sizeof(rkvdec->mdev.model));
848 strscpy(rkvdec->mdev.bus_info, "platform:rkvdec",
849 sizeof(rkvdec->mdev.bus_info));
850 media_device_init(&rkvdec->mdev);
851 rkvdec->mdev.ops = &rkvdec_media_ops;
852 rkvdec->v4l2_dev.mdev = &rkvdec->mdev;
853
854 rkvdec->vdev.lock = &rkvdec->vdev_lock;
855 rkvdec->vdev.v4l2_dev = &rkvdec->v4l2_dev;
856 rkvdec->vdev.fops = &rkvdec_fops;
857 rkvdec->vdev.release = video_device_release_empty;
858 rkvdec->vdev.vfl_dir = VFL_DIR_M2M;
859 rkvdec->vdev.device_caps = V4L2_CAP_STREAMING |
860 V4L2_CAP_VIDEO_M2M_MPLANE;
861 rkvdec->vdev.ioctl_ops = &rkvdec_ioctl_ops;
862 video_set_drvdata(&rkvdec->vdev, rkvdec);
863 strscpy(rkvdec->vdev.name, "rkvdec", sizeof(rkvdec->vdev.name));
864
865 ret = video_register_device(&rkvdec->vdev, VFL_TYPE_VIDEO, -1);
866 if (ret) {
867 v4l2_err(&rkvdec->v4l2_dev, "Failed to register video device\n");
868 goto err_cleanup_mc;
869 }
870
871 ret = v4l2_m2m_register_media_controller(rkvdec->m2m_dev, &rkvdec->vdev,
872 MEDIA_ENT_F_PROC_VIDEO_DECODER);
873 if (ret) {
874 v4l2_err(&rkvdec->v4l2_dev,
875 "Failed to initialize V4L2 M2M media controller\n");
876 goto err_unregister_vdev;
877 }
878
879 ret = media_device_register(&rkvdec->mdev);
880 if (ret) {
881 v4l2_err(&rkvdec->v4l2_dev, "Failed to register media device\n");
882 goto err_unregister_mc;
883 }
884
885 return 0;
886
887 err_unregister_mc:
888 v4l2_m2m_unregister_media_controller(rkvdec->m2m_dev);
889
890 err_unregister_vdev:
891 video_unregister_device(&rkvdec->vdev);
892
893 err_cleanup_mc:
894 media_device_cleanup(&rkvdec->mdev);
895 v4l2_m2m_release(rkvdec->m2m_dev);
896
897 err_unregister_v4l2:
898 v4l2_device_unregister(&rkvdec->v4l2_dev);
899 return ret;
900 }
901
rkvdec_v4l2_cleanup(struct rkvdec_dev * rkvdec)902 static void rkvdec_v4l2_cleanup(struct rkvdec_dev *rkvdec)
903 {
904 media_device_unregister(&rkvdec->mdev);
905 v4l2_m2m_unregister_media_controller(rkvdec->m2m_dev);
906 video_unregister_device(&rkvdec->vdev);
907 media_device_cleanup(&rkvdec->mdev);
908 v4l2_m2m_release(rkvdec->m2m_dev);
909 v4l2_device_unregister(&rkvdec->v4l2_dev);
910 }
911
rkvdec_irq_handler(int irq,void * priv)912 static irqreturn_t rkvdec_irq_handler(int irq, void *priv)
913 {
914 struct rkvdec_dev *rkvdec = priv;
915 enum vb2_buffer_state state;
916 u32 status;
917
918 status = readl(rkvdec->regs + RKVDEC_REG_INTERRUPT);
919 state = (status & RKVDEC_RDY_STA) ?
920 VB2_BUF_STATE_DONE : VB2_BUF_STATE_ERROR;
921
922 writel(0, rkvdec->regs + RKVDEC_REG_INTERRUPT);
923 if (cancel_delayed_work(&rkvdec->watchdog_work)) {
924 struct rkvdec_ctx *ctx;
925
926 ctx = v4l2_m2m_get_curr_priv(rkvdec->m2m_dev);
927 rkvdec_job_finish(ctx, state);
928 }
929
930 return IRQ_HANDLED;
931 }
932
rkvdec_watchdog_func(struct work_struct * work)933 static void rkvdec_watchdog_func(struct work_struct *work)
934 {
935 struct rkvdec_dev *rkvdec;
936 struct rkvdec_ctx *ctx;
937
938 rkvdec = container_of(to_delayed_work(work), struct rkvdec_dev,
939 watchdog_work);
940 ctx = v4l2_m2m_get_curr_priv(rkvdec->m2m_dev);
941 if (ctx) {
942 dev_err(rkvdec->dev, "Frame processing timed out!\n");
943 writel(RKVDEC_IRQ_DIS, rkvdec->regs + RKVDEC_REG_INTERRUPT);
944 writel(0, rkvdec->regs + RKVDEC_REG_SYSCTRL);
945 rkvdec_job_finish(ctx, VB2_BUF_STATE_ERROR);
946 }
947 }
948
949 static const struct of_device_id of_rkvdec_match[] = {
950 { .compatible = "rockchip,rk3399-vdec" },
951 { /* sentinel */ }
952 };
953 MODULE_DEVICE_TABLE(of, of_rkvdec_match);
954
955 static const char * const rkvdec_clk_names[] = {
956 "axi", "ahb", "cabac", "core"
957 };
958
rkvdec_probe(struct platform_device * pdev)959 static int rkvdec_probe(struct platform_device *pdev)
960 {
961 struct rkvdec_dev *rkvdec;
962 struct resource *res;
963 unsigned int i;
964 int ret, irq;
965
966 rkvdec = devm_kzalloc(&pdev->dev, sizeof(*rkvdec), GFP_KERNEL);
967 if (!rkvdec)
968 return -ENOMEM;
969
970 platform_set_drvdata(pdev, rkvdec);
971 rkvdec->dev = &pdev->dev;
972 mutex_init(&rkvdec->vdev_lock);
973 INIT_DELAYED_WORK(&rkvdec->watchdog_work, rkvdec_watchdog_func);
974
975 rkvdec->clocks = devm_kcalloc(&pdev->dev, ARRAY_SIZE(rkvdec_clk_names),
976 sizeof(*rkvdec->clocks), GFP_KERNEL);
977 if (!rkvdec->clocks)
978 return -ENOMEM;
979
980 for (i = 0; i < ARRAY_SIZE(rkvdec_clk_names); i++)
981 rkvdec->clocks[i].id = rkvdec_clk_names[i];
982
983 ret = devm_clk_bulk_get(&pdev->dev, ARRAY_SIZE(rkvdec_clk_names),
984 rkvdec->clocks);
985 if (ret)
986 return ret;
987
988 /*
989 * Bump ACLK to max. possible freq. (500 MHz) to improve performance
990 * When 4k video playback.
991 */
992 clk_set_rate(rkvdec->clocks[0].clk, 500 * 1000 * 1000);
993
994 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
995 rkvdec->regs = devm_ioremap_resource(&pdev->dev, res);
996 if (IS_ERR(rkvdec->regs))
997 return PTR_ERR(rkvdec->regs);
998
999 ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
1000 if (ret) {
1001 dev_err(&pdev->dev, "Could not set DMA coherent mask.\n");
1002 return ret;
1003 }
1004
1005 vb2_dma_contig_set_max_seg_size(&pdev->dev, DMA_BIT_MASK(32));
1006
1007 irq = platform_get_irq(pdev, 0);
1008 if (irq <= 0)
1009 return -ENXIO;
1010
1011 ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
1012 rkvdec_irq_handler, IRQF_ONESHOT,
1013 dev_name(&pdev->dev), rkvdec);
1014 if (ret) {
1015 dev_err(&pdev->dev, "Could not request vdec IRQ\n");
1016 return ret;
1017 }
1018
1019 pm_runtime_set_autosuspend_delay(&pdev->dev, 100);
1020 pm_runtime_use_autosuspend(&pdev->dev);
1021 pm_runtime_enable(&pdev->dev);
1022
1023 ret = rkvdec_v4l2_init(rkvdec);
1024 if (ret)
1025 goto err_disable_runtime_pm;
1026
1027 return 0;
1028
1029 err_disable_runtime_pm:
1030 pm_runtime_dont_use_autosuspend(&pdev->dev);
1031 pm_runtime_disable(&pdev->dev);
1032 return ret;
1033 }
1034
rkvdec_remove(struct platform_device * pdev)1035 static int rkvdec_remove(struct platform_device *pdev)
1036 {
1037 struct rkvdec_dev *rkvdec = platform_get_drvdata(pdev);
1038
1039 rkvdec_v4l2_cleanup(rkvdec);
1040 pm_runtime_disable(&pdev->dev);
1041 pm_runtime_dont_use_autosuspend(&pdev->dev);
1042 return 0;
1043 }
1044
1045 #ifdef CONFIG_PM
rkvdec_runtime_resume(struct device * dev)1046 static int rkvdec_runtime_resume(struct device *dev)
1047 {
1048 struct rkvdec_dev *rkvdec = dev_get_drvdata(dev);
1049
1050 return clk_bulk_prepare_enable(ARRAY_SIZE(rkvdec_clk_names),
1051 rkvdec->clocks);
1052 }
1053
rkvdec_runtime_suspend(struct device * dev)1054 static int rkvdec_runtime_suspend(struct device *dev)
1055 {
1056 struct rkvdec_dev *rkvdec = dev_get_drvdata(dev);
1057
1058 clk_bulk_disable_unprepare(ARRAY_SIZE(rkvdec_clk_names),
1059 rkvdec->clocks);
1060 return 0;
1061 }
1062 #endif
1063
1064 static const struct dev_pm_ops rkvdec_pm_ops = {
1065 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
1066 pm_runtime_force_resume)
1067 SET_RUNTIME_PM_OPS(rkvdec_runtime_suspend, rkvdec_runtime_resume, NULL)
1068 };
1069
1070 static struct platform_driver rkvdec_driver = {
1071 .probe = rkvdec_probe,
1072 .remove = rkvdec_remove,
1073 .driver = {
1074 .name = "rkvdec",
1075 .of_match_table = of_rkvdec_match,
1076 .pm = &rkvdec_pm_ops,
1077 },
1078 };
1079 module_platform_driver(rkvdec_driver);
1080
1081 MODULE_AUTHOR("Boris Brezillon <boris.brezillon@collabora.com>");
1082 MODULE_DESCRIPTION("Rockchip Video Decoder driver");
1083 MODULE_LICENSE("GPL v2");
1084