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 30static int rkvdec_try_ctrl(struct v4l2_ctrl *ctrl) 31{ 32 struct rkvdec_ctx *ctx = container_of(ctrl->handler, struct rkvdec_ctx, ctrl_hdl); 33 const struct rkvdec_coded_fmt_desc *desc = ctx->coded_fmt_desc; 34 35 if (desc->ops->try_ctrl) 36 return desc->ops->try_ctrl(ctx, ctrl); 37 38 return 0; 39} 40 41static const struct v4l2_ctrl_ops rkvdec_ctrl_ops = { 42 .try_ctrl = rkvdec_try_ctrl, 43}; 44 45static const struct rkvdec_ctrl_desc rkvdec_h264_ctrl_descs[] = { 46 { 47 .cfg.id = V4L2_CID_STATELESS_H264_DECODE_PARAMS, 48 }, 49 { 50 .cfg.id = V4L2_CID_STATELESS_H264_SPS, 51 .cfg.ops = &rkvdec_ctrl_ops, 52 }, 53 { 54 .cfg.id = V4L2_CID_STATELESS_H264_PPS, 55 }, 56 { 57 .cfg.id = V4L2_CID_STATELESS_H264_SCALING_MATRIX, 58 }, 59 { 60 .cfg.id = V4L2_CID_STATELESS_H264_DECODE_MODE, 61 .cfg.min = V4L2_STATELESS_H264_DECODE_MODE_FRAME_BASED, 62 .cfg.max = V4L2_STATELESS_H264_DECODE_MODE_FRAME_BASED, 63 .cfg.def = V4L2_STATELESS_H264_DECODE_MODE_FRAME_BASED, 64 }, 65 { 66 .cfg.id = V4L2_CID_STATELESS_H264_START_CODE, 67 .cfg.min = V4L2_STATELESS_H264_START_CODE_ANNEX_B, 68 .cfg.def = V4L2_STATELESS_H264_START_CODE_ANNEX_B, 69 .cfg.max = V4L2_STATELESS_H264_START_CODE_ANNEX_B, 70 }, 71 { 72 .cfg.id = V4L2_CID_MPEG_VIDEO_H264_PROFILE, 73 .cfg.min = V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE, 74 .cfg.max = V4L2_MPEG_VIDEO_H264_PROFILE_HIGH, 75 .cfg.menu_skip_mask = 76 BIT(V4L2_MPEG_VIDEO_H264_PROFILE_EXTENDED), 77 .cfg.def = V4L2_MPEG_VIDEO_H264_PROFILE_MAIN, 78 }, 79 { 80 .cfg.id = V4L2_CID_MPEG_VIDEO_H264_LEVEL, 81 .cfg.min = V4L2_MPEG_VIDEO_H264_LEVEL_1_0, 82 .cfg.max = V4L2_MPEG_VIDEO_H264_LEVEL_5_1, 83 }, 84}; 85 86static const struct rkvdec_ctrls rkvdec_h264_ctrls = { 87 .ctrls = rkvdec_h264_ctrl_descs, 88 .num_ctrls = ARRAY_SIZE(rkvdec_h264_ctrl_descs), 89}; 90 91static const u32 rkvdec_h264_vp9_decoded_fmts[] = { 92 V4L2_PIX_FMT_NV12, 93}; 94 95static const struct rkvdec_ctrl_desc rkvdec_vp9_ctrl_descs[] = { 96 { 97 .cfg.id = V4L2_CID_STATELESS_VP9_FRAME, 98 }, 99 { 100 .cfg.id = V4L2_CID_STATELESS_VP9_COMPRESSED_HDR, 101 }, 102 { 103 .cfg.id = V4L2_CID_MPEG_VIDEO_VP9_PROFILE, 104 .cfg.min = V4L2_MPEG_VIDEO_VP9_PROFILE_0, 105 .cfg.max = V4L2_MPEG_VIDEO_VP9_PROFILE_0, 106 .cfg.def = V4L2_MPEG_VIDEO_VP9_PROFILE_0, 107 }, 108}; 109 110static const struct rkvdec_ctrls rkvdec_vp9_ctrls = { 111 .ctrls = rkvdec_vp9_ctrl_descs, 112 .num_ctrls = ARRAY_SIZE(rkvdec_vp9_ctrl_descs), 113}; 114 115static const struct rkvdec_coded_fmt_desc rkvdec_coded_fmts[] = { 116 { 117 .fourcc = V4L2_PIX_FMT_H264_SLICE, 118 .frmsize = { 119 .min_width = 48, 120 .max_width = 4096, 121 .step_width = 16, 122 .min_height = 48, 123 .max_height = 2560, 124 .step_height = 16, 125 }, 126 .ctrls = &rkvdec_h264_ctrls, 127 .ops = &rkvdec_h264_fmt_ops, 128 .num_decoded_fmts = ARRAY_SIZE(rkvdec_h264_vp9_decoded_fmts), 129 .decoded_fmts = rkvdec_h264_vp9_decoded_fmts, 130 .subsystem_flags = VB2_V4L2_FL_SUPPORTS_M2M_HOLD_CAPTURE_BUF, 131 }, 132 { 133 .fourcc = V4L2_PIX_FMT_VP9_FRAME, 134 .frmsize = { 135 .min_width = 64, 136 .max_width = 4096, 137 .step_width = 64, 138 .min_height = 64, 139 .max_height = 2304, 140 .step_height = 64, 141 }, 142 .ctrls = &rkvdec_vp9_ctrls, 143 .ops = &rkvdec_vp9_fmt_ops, 144 .num_decoded_fmts = ARRAY_SIZE(rkvdec_h264_vp9_decoded_fmts), 145 .decoded_fmts = rkvdec_h264_vp9_decoded_fmts, 146 } 147}; 148 149static const struct rkvdec_coded_fmt_desc * 150rkvdec_find_coded_fmt_desc(u32 fourcc) 151{ 152 unsigned int i; 153 154 for (i = 0; i < ARRAY_SIZE(rkvdec_coded_fmts); i++) { 155 if (rkvdec_coded_fmts[i].fourcc == fourcc) 156 return &rkvdec_coded_fmts[i]; 157 } 158 159 return NULL; 160} 161 162static void rkvdec_reset_fmt(struct rkvdec_ctx *ctx, struct v4l2_format *f, 163 u32 fourcc) 164{ 165 memset(f, 0, sizeof(*f)); 166 f->fmt.pix_mp.pixelformat = fourcc; 167 f->fmt.pix_mp.field = V4L2_FIELD_NONE; 168 f->fmt.pix_mp.colorspace = V4L2_COLORSPACE_REC709; 169 f->fmt.pix_mp.ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT; 170 f->fmt.pix_mp.quantization = V4L2_QUANTIZATION_DEFAULT; 171 f->fmt.pix_mp.xfer_func = V4L2_XFER_FUNC_DEFAULT; 172} 173 174static void rkvdec_reset_coded_fmt(struct rkvdec_ctx *ctx) 175{ 176 struct v4l2_format *f = &ctx->coded_fmt; 177 178 ctx->coded_fmt_desc = &rkvdec_coded_fmts[0]; 179 rkvdec_reset_fmt(ctx, f, ctx->coded_fmt_desc->fourcc); 180 181 f->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE; 182 f->fmt.pix_mp.width = ctx->coded_fmt_desc->frmsize.min_width; 183 f->fmt.pix_mp.height = ctx->coded_fmt_desc->frmsize.min_height; 184 185 if (ctx->coded_fmt_desc->ops->adjust_fmt) 186 ctx->coded_fmt_desc->ops->adjust_fmt(ctx, f); 187} 188 189static void rkvdec_reset_decoded_fmt(struct rkvdec_ctx *ctx) 190{ 191 struct v4l2_format *f = &ctx->decoded_fmt; 192 193 rkvdec_reset_fmt(ctx, f, ctx->coded_fmt_desc->decoded_fmts[0]); 194 f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE; 195 v4l2_fill_pixfmt_mp(&f->fmt.pix_mp, 196 ctx->coded_fmt_desc->decoded_fmts[0], 197 ctx->coded_fmt.fmt.pix_mp.width, 198 ctx->coded_fmt.fmt.pix_mp.height); 199 f->fmt.pix_mp.plane_fmt[0].sizeimage += 128 * 200 DIV_ROUND_UP(f->fmt.pix_mp.width, 16) * 201 DIV_ROUND_UP(f->fmt.pix_mp.height, 16); 202} 203 204static int rkvdec_enum_framesizes(struct file *file, void *priv, 205 struct v4l2_frmsizeenum *fsize) 206{ 207 const struct rkvdec_coded_fmt_desc *fmt; 208 209 if (fsize->index != 0) 210 return -EINVAL; 211 212 fmt = rkvdec_find_coded_fmt_desc(fsize->pixel_format); 213 if (!fmt) 214 return -EINVAL; 215 216 fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE; 217 fsize->stepwise = fmt->frmsize; 218 return 0; 219} 220 221static int rkvdec_querycap(struct file *file, void *priv, 222 struct v4l2_capability *cap) 223{ 224 struct rkvdec_dev *rkvdec = video_drvdata(file); 225 struct video_device *vdev = video_devdata(file); 226 227 strscpy(cap->driver, rkvdec->dev->driver->name, 228 sizeof(cap->driver)); 229 strscpy(cap->card, vdev->name, sizeof(cap->card)); 230 snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s", 231 rkvdec->dev->driver->name); 232 return 0; 233} 234 235static int rkvdec_try_capture_fmt(struct file *file, void *priv, 236 struct v4l2_format *f) 237{ 238 struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp; 239 struct rkvdec_ctx *ctx = fh_to_rkvdec_ctx(priv); 240 const struct rkvdec_coded_fmt_desc *coded_desc; 241 unsigned int i; 242 243 /* 244 * The codec context should point to a coded format desc, if the format 245 * on the coded end has not been set yet, it should point to the 246 * default value. 247 */ 248 coded_desc = ctx->coded_fmt_desc; 249 if (WARN_ON(!coded_desc)) 250 return -EINVAL; 251 252 for (i = 0; i < coded_desc->num_decoded_fmts; i++) { 253 if (coded_desc->decoded_fmts[i] == pix_mp->pixelformat) 254 break; 255 } 256 257 if (i == coded_desc->num_decoded_fmts) 258 pix_mp->pixelformat = coded_desc->decoded_fmts[0]; 259 260 /* Always apply the frmsize constraint of the coded end. */ 261 pix_mp->width = max(pix_mp->width, ctx->coded_fmt.fmt.pix_mp.width); 262 pix_mp->height = max(pix_mp->height, ctx->coded_fmt.fmt.pix_mp.height); 263 v4l2_apply_frmsize_constraints(&pix_mp->width, 264 &pix_mp->height, 265 &coded_desc->frmsize); 266 267 v4l2_fill_pixfmt_mp(pix_mp, pix_mp->pixelformat, 268 pix_mp->width, pix_mp->height); 269 pix_mp->plane_fmt[0].sizeimage += 270 128 * 271 DIV_ROUND_UP(pix_mp->width, 16) * 272 DIV_ROUND_UP(pix_mp->height, 16); 273 pix_mp->field = V4L2_FIELD_NONE; 274 275 return 0; 276} 277 278static int rkvdec_try_output_fmt(struct file *file, void *priv, 279 struct v4l2_format *f) 280{ 281 struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp; 282 struct rkvdec_ctx *ctx = fh_to_rkvdec_ctx(priv); 283 const struct rkvdec_coded_fmt_desc *desc; 284 285 desc = rkvdec_find_coded_fmt_desc(pix_mp->pixelformat); 286 if (!desc) { 287 pix_mp->pixelformat = rkvdec_coded_fmts[0].fourcc; 288 desc = &rkvdec_coded_fmts[0]; 289 } 290 291 v4l2_apply_frmsize_constraints(&pix_mp->width, 292 &pix_mp->height, 293 &desc->frmsize); 294 295 pix_mp->field = V4L2_FIELD_NONE; 296 /* All coded formats are considered single planar for now. */ 297 pix_mp->num_planes = 1; 298 299 if (desc->ops->adjust_fmt) { 300 int ret; 301 302 ret = desc->ops->adjust_fmt(ctx, f); 303 if (ret) 304 return ret; 305 } 306 307 return 0; 308} 309 310static int rkvdec_s_capture_fmt(struct file *file, void *priv, 311 struct v4l2_format *f) 312{ 313 struct rkvdec_ctx *ctx = fh_to_rkvdec_ctx(priv); 314 struct vb2_queue *vq; 315 int ret; 316 317 /* Change not allowed if queue is busy */ 318 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, 319 V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE); 320 if (vb2_is_busy(vq)) 321 return -EBUSY; 322 323 ret = rkvdec_try_capture_fmt(file, priv, f); 324 if (ret) 325 return ret; 326 327 ctx->decoded_fmt = *f; 328 return 0; 329} 330 331static int rkvdec_s_output_fmt(struct file *file, void *priv, 332 struct v4l2_format *f) 333{ 334 struct rkvdec_ctx *ctx = fh_to_rkvdec_ctx(priv); 335 struct v4l2_m2m_ctx *m2m_ctx = ctx->fh.m2m_ctx; 336 const struct rkvdec_coded_fmt_desc *desc; 337 struct v4l2_format *cap_fmt; 338 struct vb2_queue *peer_vq, *vq; 339 int ret; 340 341 /* 342 * In order to support dynamic resolution change, the decoder admits 343 * a resolution change, as long as the pixelformat remains. Can't be 344 * done if streaming. 345 */ 346 vq = v4l2_m2m_get_vq(m2m_ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE); 347 if (vb2_is_streaming(vq) || 348 (vb2_is_busy(vq) && 349 f->fmt.pix_mp.pixelformat != ctx->coded_fmt.fmt.pix_mp.pixelformat)) 350 return -EBUSY; 351 352 /* 353 * Since format change on the OUTPUT queue will reset the CAPTURE 354 * queue, we can't allow doing so when the CAPTURE queue has buffers 355 * allocated. 356 */ 357 peer_vq = v4l2_m2m_get_vq(m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE); 358 if (vb2_is_busy(peer_vq)) 359 return -EBUSY; 360 361 ret = rkvdec_try_output_fmt(file, priv, f); 362 if (ret) 363 return ret; 364 365 desc = rkvdec_find_coded_fmt_desc(f->fmt.pix_mp.pixelformat); 366 if (!desc) 367 return -EINVAL; 368 ctx->coded_fmt_desc = desc; 369 ctx->coded_fmt = *f; 370 371 /* 372 * Current decoded format might have become invalid with newly 373 * selected codec, so reset it to default just to be safe and 374 * keep internal driver state sane. User is mandated to set 375 * the decoded format again after we return, so we don't need 376 * anything smarter. 377 * 378 * Note that this will propagates any size changes to the decoded format. 379 */ 380 rkvdec_reset_decoded_fmt(ctx); 381 382 /* Propagate colorspace information to capture. */ 383 cap_fmt = &ctx->decoded_fmt; 384 cap_fmt->fmt.pix_mp.colorspace = f->fmt.pix_mp.colorspace; 385 cap_fmt->fmt.pix_mp.xfer_func = f->fmt.pix_mp.xfer_func; 386 cap_fmt->fmt.pix_mp.ycbcr_enc = f->fmt.pix_mp.ycbcr_enc; 387 cap_fmt->fmt.pix_mp.quantization = f->fmt.pix_mp.quantization; 388 389 /* Enable format specific queue features */ 390 vq->subsystem_flags |= desc->subsystem_flags; 391 392 return 0; 393} 394 395static int rkvdec_g_output_fmt(struct file *file, void *priv, 396 struct v4l2_format *f) 397{ 398 struct rkvdec_ctx *ctx = fh_to_rkvdec_ctx(priv); 399 400 *f = ctx->coded_fmt; 401 return 0; 402} 403 404static int rkvdec_g_capture_fmt(struct file *file, void *priv, 405 struct v4l2_format *f) 406{ 407 struct rkvdec_ctx *ctx = fh_to_rkvdec_ctx(priv); 408 409 *f = ctx->decoded_fmt; 410 return 0; 411} 412 413static int rkvdec_enum_output_fmt(struct file *file, void *priv, 414 struct v4l2_fmtdesc *f) 415{ 416 if (f->index >= ARRAY_SIZE(rkvdec_coded_fmts)) 417 return -EINVAL; 418 419 f->pixelformat = rkvdec_coded_fmts[f->index].fourcc; 420 return 0; 421} 422 423static int rkvdec_enum_capture_fmt(struct file *file, void *priv, 424 struct v4l2_fmtdesc *f) 425{ 426 struct rkvdec_ctx *ctx = fh_to_rkvdec_ctx(priv); 427 428 if (WARN_ON(!ctx->coded_fmt_desc)) 429 return -EINVAL; 430 431 if (f->index >= ctx->coded_fmt_desc->num_decoded_fmts) 432 return -EINVAL; 433 434 f->pixelformat = ctx->coded_fmt_desc->decoded_fmts[f->index]; 435 return 0; 436} 437 438static const struct v4l2_ioctl_ops rkvdec_ioctl_ops = { 439 .vidioc_querycap = rkvdec_querycap, 440 .vidioc_enum_framesizes = rkvdec_enum_framesizes, 441 442 .vidioc_try_fmt_vid_cap_mplane = rkvdec_try_capture_fmt, 443 .vidioc_try_fmt_vid_out_mplane = rkvdec_try_output_fmt, 444 .vidioc_s_fmt_vid_out_mplane = rkvdec_s_output_fmt, 445 .vidioc_s_fmt_vid_cap_mplane = rkvdec_s_capture_fmt, 446 .vidioc_g_fmt_vid_out_mplane = rkvdec_g_output_fmt, 447 .vidioc_g_fmt_vid_cap_mplane = rkvdec_g_capture_fmt, 448 .vidioc_enum_fmt_vid_out = rkvdec_enum_output_fmt, 449 .vidioc_enum_fmt_vid_cap = rkvdec_enum_capture_fmt, 450 451 .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs, 452 .vidioc_querybuf = v4l2_m2m_ioctl_querybuf, 453 .vidioc_qbuf = v4l2_m2m_ioctl_qbuf, 454 .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf, 455 .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf, 456 .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs, 457 .vidioc_expbuf = v4l2_m2m_ioctl_expbuf, 458 459 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, 460 .vidioc_unsubscribe_event = v4l2_event_unsubscribe, 461 462 .vidioc_streamon = v4l2_m2m_ioctl_streamon, 463 .vidioc_streamoff = v4l2_m2m_ioctl_streamoff, 464 465 .vidioc_decoder_cmd = v4l2_m2m_ioctl_stateless_decoder_cmd, 466 .vidioc_try_decoder_cmd = v4l2_m2m_ioctl_stateless_try_decoder_cmd, 467}; 468 469static int rkvdec_queue_setup(struct vb2_queue *vq, unsigned int *num_buffers, 470 unsigned int *num_planes, unsigned int sizes[], 471 struct device *alloc_devs[]) 472{ 473 struct rkvdec_ctx *ctx = vb2_get_drv_priv(vq); 474 struct v4l2_format *f; 475 unsigned int i; 476 477 if (V4L2_TYPE_IS_OUTPUT(vq->type)) 478 f = &ctx->coded_fmt; 479 else 480 f = &ctx->decoded_fmt; 481 482 if (*num_planes) { 483 if (*num_planes != f->fmt.pix_mp.num_planes) 484 return -EINVAL; 485 486 for (i = 0; i < f->fmt.pix_mp.num_planes; i++) { 487 if (sizes[i] < f->fmt.pix_mp.plane_fmt[i].sizeimage) 488 return -EINVAL; 489 } 490 } else { 491 *num_planes = f->fmt.pix_mp.num_planes; 492 for (i = 0; i < f->fmt.pix_mp.num_planes; i++) 493 sizes[i] = f->fmt.pix_mp.plane_fmt[i].sizeimage; 494 } 495 496 return 0; 497} 498 499static int rkvdec_buf_prepare(struct vb2_buffer *vb) 500{ 501 struct vb2_queue *vq = vb->vb2_queue; 502 struct rkvdec_ctx *ctx = vb2_get_drv_priv(vq); 503 struct v4l2_format *f; 504 unsigned int i; 505 506 if (V4L2_TYPE_IS_OUTPUT(vq->type)) 507 f = &ctx->coded_fmt; 508 else 509 f = &ctx->decoded_fmt; 510 511 for (i = 0; i < f->fmt.pix_mp.num_planes; ++i) { 512 u32 sizeimage = f->fmt.pix_mp.plane_fmt[i].sizeimage; 513 514 if (vb2_plane_size(vb, i) < sizeimage) 515 return -EINVAL; 516 } 517 518 /* 519 * Buffer's bytesused must be written by driver for CAPTURE buffers. 520 * (for OUTPUT buffers, if userspace passes 0 bytesused, v4l2-core sets 521 * it to buffer length). 522 */ 523 if (V4L2_TYPE_IS_CAPTURE(vq->type)) 524 vb2_set_plane_payload(vb, 0, f->fmt.pix_mp.plane_fmt[0].sizeimage); 525 526 return 0; 527} 528 529static void rkvdec_buf_queue(struct vb2_buffer *vb) 530{ 531 struct rkvdec_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); 532 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); 533 534 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf); 535} 536 537static int rkvdec_buf_out_validate(struct vb2_buffer *vb) 538{ 539 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); 540 541 vbuf->field = V4L2_FIELD_NONE; 542 return 0; 543} 544 545static void rkvdec_buf_request_complete(struct vb2_buffer *vb) 546{ 547 struct rkvdec_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); 548 549 v4l2_ctrl_request_complete(vb->req_obj.req, &ctx->ctrl_hdl); 550} 551 552static int rkvdec_start_streaming(struct vb2_queue *q, unsigned int count) 553{ 554 struct rkvdec_ctx *ctx = vb2_get_drv_priv(q); 555 const struct rkvdec_coded_fmt_desc *desc; 556 int ret; 557 558 if (V4L2_TYPE_IS_CAPTURE(q->type)) 559 return 0; 560 561 desc = ctx->coded_fmt_desc; 562 if (WARN_ON(!desc)) 563 return -EINVAL; 564 565 if (desc->ops->start) { 566 ret = desc->ops->start(ctx); 567 if (ret) 568 return ret; 569 } 570 571 return 0; 572} 573 574static void rkvdec_queue_cleanup(struct vb2_queue *vq, u32 state) 575{ 576 struct rkvdec_ctx *ctx = vb2_get_drv_priv(vq); 577 578 while (true) { 579 struct vb2_v4l2_buffer *vbuf; 580 581 if (V4L2_TYPE_IS_OUTPUT(vq->type)) 582 vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx); 583 else 584 vbuf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx); 585 586 if (!vbuf) 587 break; 588 589 v4l2_ctrl_request_complete(vbuf->vb2_buf.req_obj.req, 590 &ctx->ctrl_hdl); 591 v4l2_m2m_buf_done(vbuf, state); 592 } 593} 594 595static void rkvdec_stop_streaming(struct vb2_queue *q) 596{ 597 struct rkvdec_ctx *ctx = vb2_get_drv_priv(q); 598 599 if (V4L2_TYPE_IS_OUTPUT(q->type)) { 600 const struct rkvdec_coded_fmt_desc *desc = ctx->coded_fmt_desc; 601 602 if (WARN_ON(!desc)) 603 return; 604 605 if (desc->ops->stop) 606 desc->ops->stop(ctx); 607 } 608 609 rkvdec_queue_cleanup(q, VB2_BUF_STATE_ERROR); 610} 611 612static const struct vb2_ops rkvdec_queue_ops = { 613 .queue_setup = rkvdec_queue_setup, 614 .buf_prepare = rkvdec_buf_prepare, 615 .buf_queue = rkvdec_buf_queue, 616 .buf_out_validate = rkvdec_buf_out_validate, 617 .buf_request_complete = rkvdec_buf_request_complete, 618 .start_streaming = rkvdec_start_streaming, 619 .stop_streaming = rkvdec_stop_streaming, 620 .wait_prepare = vb2_ops_wait_prepare, 621 .wait_finish = vb2_ops_wait_finish, 622}; 623 624static int rkvdec_request_validate(struct media_request *req) 625{ 626 unsigned int count; 627 628 count = vb2_request_buffer_cnt(req); 629 if (!count) 630 return -ENOENT; 631 else if (count > 1) 632 return -EINVAL; 633 634 return vb2_request_validate(req); 635} 636 637static const struct media_device_ops rkvdec_media_ops = { 638 .req_validate = rkvdec_request_validate, 639 .req_queue = v4l2_m2m_request_queue, 640}; 641 642static void rkvdec_job_finish_no_pm(struct rkvdec_ctx *ctx, 643 enum vb2_buffer_state result) 644{ 645 if (ctx->coded_fmt_desc->ops->done) { 646 struct vb2_v4l2_buffer *src_buf, *dst_buf; 647 648 src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx); 649 dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx); 650 ctx->coded_fmt_desc->ops->done(ctx, src_buf, dst_buf, result); 651 } 652 653 v4l2_m2m_buf_done_and_job_finish(ctx->dev->m2m_dev, ctx->fh.m2m_ctx, 654 result); 655} 656 657static void rkvdec_job_finish(struct rkvdec_ctx *ctx, 658 enum vb2_buffer_state result) 659{ 660 struct rkvdec_dev *rkvdec = ctx->dev; 661 662 pm_runtime_mark_last_busy(rkvdec->dev); 663 pm_runtime_put_autosuspend(rkvdec->dev); 664 rkvdec_job_finish_no_pm(ctx, result); 665} 666 667void rkvdec_run_preamble(struct rkvdec_ctx *ctx, struct rkvdec_run *run) 668{ 669 struct media_request *src_req; 670 671 memset(run, 0, sizeof(*run)); 672 673 run->bufs.src = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx); 674 run->bufs.dst = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx); 675 676 /* Apply request(s) controls if needed. */ 677 src_req = run->bufs.src->vb2_buf.req_obj.req; 678 if (src_req) 679 v4l2_ctrl_request_setup(src_req, &ctx->ctrl_hdl); 680 681 v4l2_m2m_buf_copy_metadata(run->bufs.src, run->bufs.dst, true); 682} 683 684void rkvdec_run_postamble(struct rkvdec_ctx *ctx, struct rkvdec_run *run) 685{ 686 struct media_request *src_req = run->bufs.src->vb2_buf.req_obj.req; 687 688 if (src_req) 689 v4l2_ctrl_request_complete(src_req, &ctx->ctrl_hdl); 690} 691 692static void rkvdec_device_run(void *priv) 693{ 694 struct rkvdec_ctx *ctx = priv; 695 struct rkvdec_dev *rkvdec = ctx->dev; 696 const struct rkvdec_coded_fmt_desc *desc = ctx->coded_fmt_desc; 697 int ret; 698 699 if (WARN_ON(!desc)) 700 return; 701 702 ret = pm_runtime_resume_and_get(rkvdec->dev); 703 if (ret < 0) { 704 rkvdec_job_finish_no_pm(ctx, VB2_BUF_STATE_ERROR); 705 return; 706 } 707 708 ret = desc->ops->run(ctx); 709 if (ret) 710 rkvdec_job_finish(ctx, VB2_BUF_STATE_ERROR); 711} 712 713static const struct v4l2_m2m_ops rkvdec_m2m_ops = { 714 .device_run = rkvdec_device_run, 715}; 716 717static int rkvdec_queue_init(void *priv, 718 struct vb2_queue *src_vq, 719 struct vb2_queue *dst_vq) 720{ 721 struct rkvdec_ctx *ctx = priv; 722 struct rkvdec_dev *rkvdec = ctx->dev; 723 int ret; 724 725 src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE; 726 src_vq->io_modes = VB2_MMAP | VB2_DMABUF; 727 src_vq->drv_priv = ctx; 728 src_vq->ops = &rkvdec_queue_ops; 729 src_vq->mem_ops = &vb2_dma_contig_memops; 730 731 /* 732 * Driver does mostly sequential access, so sacrifice TLB efficiency 733 * for faster allocation. Also, no CPU access on the source queue, 734 * so no kernel mapping needed. 735 */ 736 src_vq->dma_attrs = DMA_ATTR_ALLOC_SINGLE_PAGES | 737 DMA_ATTR_NO_KERNEL_MAPPING; 738 src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); 739 src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; 740 src_vq->lock = &rkvdec->vdev_lock; 741 src_vq->dev = rkvdec->v4l2_dev.dev; 742 src_vq->supports_requests = true; 743 src_vq->requires_requests = true; 744 745 ret = vb2_queue_init(src_vq); 746 if (ret) 747 return ret; 748 749 dst_vq->bidirectional = true; 750 dst_vq->mem_ops = &vb2_dma_contig_memops; 751 dst_vq->dma_attrs = DMA_ATTR_ALLOC_SINGLE_PAGES | 752 DMA_ATTR_NO_KERNEL_MAPPING; 753 dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE; 754 dst_vq->io_modes = VB2_MMAP | VB2_DMABUF; 755 dst_vq->drv_priv = ctx; 756 dst_vq->ops = &rkvdec_queue_ops; 757 dst_vq->buf_struct_size = sizeof(struct rkvdec_decoded_buffer); 758 dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; 759 dst_vq->lock = &rkvdec->vdev_lock; 760 dst_vq->dev = rkvdec->v4l2_dev.dev; 761 762 return vb2_queue_init(dst_vq); 763} 764 765static int rkvdec_add_ctrls(struct rkvdec_ctx *ctx, 766 const struct rkvdec_ctrls *ctrls) 767{ 768 unsigned int i; 769 770 for (i = 0; i < ctrls->num_ctrls; i++) { 771 const struct v4l2_ctrl_config *cfg = &ctrls->ctrls[i].cfg; 772 773 v4l2_ctrl_new_custom(&ctx->ctrl_hdl, cfg, ctx); 774 if (ctx->ctrl_hdl.error) 775 return ctx->ctrl_hdl.error; 776 } 777 778 return 0; 779} 780 781static int rkvdec_init_ctrls(struct rkvdec_ctx *ctx) 782{ 783 unsigned int i, nctrls = 0; 784 int ret; 785 786 for (i = 0; i < ARRAY_SIZE(rkvdec_coded_fmts); i++) 787 nctrls += rkvdec_coded_fmts[i].ctrls->num_ctrls; 788 789 v4l2_ctrl_handler_init(&ctx->ctrl_hdl, nctrls); 790 791 for (i = 0; i < ARRAY_SIZE(rkvdec_coded_fmts); i++) { 792 ret = rkvdec_add_ctrls(ctx, rkvdec_coded_fmts[i].ctrls); 793 if (ret) 794 goto err_free_handler; 795 } 796 797 ret = v4l2_ctrl_handler_setup(&ctx->ctrl_hdl); 798 if (ret) 799 goto err_free_handler; 800 801 ctx->fh.ctrl_handler = &ctx->ctrl_hdl; 802 return 0; 803 804err_free_handler: 805 v4l2_ctrl_handler_free(&ctx->ctrl_hdl); 806 return ret; 807} 808 809static int rkvdec_open(struct file *filp) 810{ 811 struct rkvdec_dev *rkvdec = video_drvdata(filp); 812 struct rkvdec_ctx *ctx; 813 int ret; 814 815 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); 816 if (!ctx) 817 return -ENOMEM; 818 819 ctx->dev = rkvdec; 820 rkvdec_reset_coded_fmt(ctx); 821 rkvdec_reset_decoded_fmt(ctx); 822 v4l2_fh_init(&ctx->fh, video_devdata(filp)); 823 824 ret = rkvdec_init_ctrls(ctx); 825 if (ret) 826 goto err_free_ctx; 827 828 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(rkvdec->m2m_dev, ctx, 829 rkvdec_queue_init); 830 if (IS_ERR(ctx->fh.m2m_ctx)) { 831 ret = PTR_ERR(ctx->fh.m2m_ctx); 832 goto err_cleanup_ctrls; 833 } 834 835 filp->private_data = &ctx->fh; 836 v4l2_fh_add(&ctx->fh); 837 838 return 0; 839 840err_cleanup_ctrls: 841 v4l2_ctrl_handler_free(&ctx->ctrl_hdl); 842 843err_free_ctx: 844 kfree(ctx); 845 return ret; 846} 847 848static int rkvdec_release(struct file *filp) 849{ 850 struct rkvdec_ctx *ctx = fh_to_rkvdec_ctx(filp->private_data); 851 852 v4l2_fh_del(&ctx->fh); 853 v4l2_m2m_ctx_release(ctx->fh.m2m_ctx); 854 v4l2_ctrl_handler_free(&ctx->ctrl_hdl); 855 v4l2_fh_exit(&ctx->fh); 856 kfree(ctx); 857 858 return 0; 859} 860 861static const struct v4l2_file_operations rkvdec_fops = { 862 .owner = THIS_MODULE, 863 .open = rkvdec_open, 864 .release = rkvdec_release, 865 .poll = v4l2_m2m_fop_poll, 866 .unlocked_ioctl = video_ioctl2, 867 .mmap = v4l2_m2m_fop_mmap, 868}; 869 870static int rkvdec_v4l2_init(struct rkvdec_dev *rkvdec) 871{ 872 int ret; 873 874 ret = v4l2_device_register(rkvdec->dev, &rkvdec->v4l2_dev); 875 if (ret) { 876 dev_err(rkvdec->dev, "Failed to register V4L2 device\n"); 877 return ret; 878 } 879 880 rkvdec->m2m_dev = v4l2_m2m_init(&rkvdec_m2m_ops); 881 if (IS_ERR(rkvdec->m2m_dev)) { 882 v4l2_err(&rkvdec->v4l2_dev, "Failed to init mem2mem device\n"); 883 ret = PTR_ERR(rkvdec->m2m_dev); 884 goto err_unregister_v4l2; 885 } 886 887 rkvdec->mdev.dev = rkvdec->dev; 888 strscpy(rkvdec->mdev.model, "rkvdec", sizeof(rkvdec->mdev.model)); 889 strscpy(rkvdec->mdev.bus_info, "platform:rkvdec", 890 sizeof(rkvdec->mdev.bus_info)); 891 media_device_init(&rkvdec->mdev); 892 rkvdec->mdev.ops = &rkvdec_media_ops; 893 rkvdec->v4l2_dev.mdev = &rkvdec->mdev; 894 895 rkvdec->vdev.lock = &rkvdec->vdev_lock; 896 rkvdec->vdev.v4l2_dev = &rkvdec->v4l2_dev; 897 rkvdec->vdev.fops = &rkvdec_fops; 898 rkvdec->vdev.release = video_device_release_empty; 899 rkvdec->vdev.vfl_dir = VFL_DIR_M2M; 900 rkvdec->vdev.device_caps = V4L2_CAP_STREAMING | 901 V4L2_CAP_VIDEO_M2M_MPLANE; 902 rkvdec->vdev.ioctl_ops = &rkvdec_ioctl_ops; 903 video_set_drvdata(&rkvdec->vdev, rkvdec); 904 strscpy(rkvdec->vdev.name, "rkvdec", sizeof(rkvdec->vdev.name)); 905 906 ret = video_register_device(&rkvdec->vdev, VFL_TYPE_VIDEO, -1); 907 if (ret) { 908 v4l2_err(&rkvdec->v4l2_dev, "Failed to register video device\n"); 909 goto err_cleanup_mc; 910 } 911 912 ret = v4l2_m2m_register_media_controller(rkvdec->m2m_dev, &rkvdec->vdev, 913 MEDIA_ENT_F_PROC_VIDEO_DECODER); 914 if (ret) { 915 v4l2_err(&rkvdec->v4l2_dev, 916 "Failed to initialize V4L2 M2M media controller\n"); 917 goto err_unregister_vdev; 918 } 919 920 ret = media_device_register(&rkvdec->mdev); 921 if (ret) { 922 v4l2_err(&rkvdec->v4l2_dev, "Failed to register media device\n"); 923 goto err_unregister_mc; 924 } 925 926 return 0; 927 928err_unregister_mc: 929 v4l2_m2m_unregister_media_controller(rkvdec->m2m_dev); 930 931err_unregister_vdev: 932 video_unregister_device(&rkvdec->vdev); 933 934err_cleanup_mc: 935 media_device_cleanup(&rkvdec->mdev); 936 v4l2_m2m_release(rkvdec->m2m_dev); 937 938err_unregister_v4l2: 939 v4l2_device_unregister(&rkvdec->v4l2_dev); 940 return ret; 941} 942 943static void rkvdec_v4l2_cleanup(struct rkvdec_dev *rkvdec) 944{ 945 media_device_unregister(&rkvdec->mdev); 946 v4l2_m2m_unregister_media_controller(rkvdec->m2m_dev); 947 video_unregister_device(&rkvdec->vdev); 948 media_device_cleanup(&rkvdec->mdev); 949 v4l2_m2m_release(rkvdec->m2m_dev); 950 v4l2_device_unregister(&rkvdec->v4l2_dev); 951} 952 953static irqreturn_t rkvdec_irq_handler(int irq, void *priv) 954{ 955 struct rkvdec_dev *rkvdec = priv; 956 enum vb2_buffer_state state; 957 u32 status; 958 959 status = readl(rkvdec->regs + RKVDEC_REG_INTERRUPT); 960 state = (status & RKVDEC_RDY_STA) ? 961 VB2_BUF_STATE_DONE : VB2_BUF_STATE_ERROR; 962 963 writel(0, rkvdec->regs + RKVDEC_REG_INTERRUPT); 964 if (cancel_delayed_work(&rkvdec->watchdog_work)) { 965 struct rkvdec_ctx *ctx; 966 967 ctx = v4l2_m2m_get_curr_priv(rkvdec->m2m_dev); 968 rkvdec_job_finish(ctx, state); 969 } 970 971 return IRQ_HANDLED; 972} 973 974static void rkvdec_watchdog_func(struct work_struct *work) 975{ 976 struct rkvdec_dev *rkvdec; 977 struct rkvdec_ctx *ctx; 978 979 rkvdec = container_of(to_delayed_work(work), struct rkvdec_dev, 980 watchdog_work); 981 ctx = v4l2_m2m_get_curr_priv(rkvdec->m2m_dev); 982 if (ctx) { 983 dev_err(rkvdec->dev, "Frame processing timed out!\n"); 984 writel(RKVDEC_IRQ_DIS, rkvdec->regs + RKVDEC_REG_INTERRUPT); 985 writel(0, rkvdec->regs + RKVDEC_REG_SYSCTRL); 986 rkvdec_job_finish(ctx, VB2_BUF_STATE_ERROR); 987 } 988} 989 990static const struct of_device_id of_rkvdec_match[] = { 991 { .compatible = "rockchip,rk3399-vdec" }, 992 { /* sentinel */ } 993}; 994MODULE_DEVICE_TABLE(of, of_rkvdec_match); 995 996static const char * const rkvdec_clk_names[] = { 997 "axi", "ahb", "cabac", "core" 998}; 999 1000static int rkvdec_probe(struct platform_device *pdev) 1001{ 1002 struct rkvdec_dev *rkvdec; 1003 unsigned int i; 1004 int ret, irq; 1005 1006 rkvdec = devm_kzalloc(&pdev->dev, sizeof(*rkvdec), GFP_KERNEL); 1007 if (!rkvdec) 1008 return -ENOMEM; 1009 1010 platform_set_drvdata(pdev, rkvdec); 1011 rkvdec->dev = &pdev->dev; 1012 mutex_init(&rkvdec->vdev_lock); 1013 INIT_DELAYED_WORK(&rkvdec->watchdog_work, rkvdec_watchdog_func); 1014 1015 rkvdec->clocks = devm_kcalloc(&pdev->dev, ARRAY_SIZE(rkvdec_clk_names), 1016 sizeof(*rkvdec->clocks), GFP_KERNEL); 1017 if (!rkvdec->clocks) 1018 return -ENOMEM; 1019 1020 for (i = 0; i < ARRAY_SIZE(rkvdec_clk_names); i++) 1021 rkvdec->clocks[i].id = rkvdec_clk_names[i]; 1022 1023 ret = devm_clk_bulk_get(&pdev->dev, ARRAY_SIZE(rkvdec_clk_names), 1024 rkvdec->clocks); 1025 if (ret) 1026 return ret; 1027 1028 rkvdec->regs = devm_platform_ioremap_resource(pdev, 0); 1029 if (IS_ERR(rkvdec->regs)) 1030 return PTR_ERR(rkvdec->regs); 1031 1032 ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); 1033 if (ret) { 1034 dev_err(&pdev->dev, "Could not set DMA coherent mask.\n"); 1035 return ret; 1036 } 1037 1038 vb2_dma_contig_set_max_seg_size(&pdev->dev, DMA_BIT_MASK(32)); 1039 1040 irq = platform_get_irq(pdev, 0); 1041 if (irq <= 0) 1042 return -ENXIO; 1043 1044 ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, 1045 rkvdec_irq_handler, IRQF_ONESHOT, 1046 dev_name(&pdev->dev), rkvdec); 1047 if (ret) { 1048 dev_err(&pdev->dev, "Could not request vdec IRQ\n"); 1049 return ret; 1050 } 1051 1052 pm_runtime_set_autosuspend_delay(&pdev->dev, 100); 1053 pm_runtime_use_autosuspend(&pdev->dev); 1054 pm_runtime_enable(&pdev->dev); 1055 1056 ret = rkvdec_v4l2_init(rkvdec); 1057 if (ret) 1058 goto err_disable_runtime_pm; 1059 1060 return 0; 1061 1062err_disable_runtime_pm: 1063 pm_runtime_dont_use_autosuspend(&pdev->dev); 1064 pm_runtime_disable(&pdev->dev); 1065 return ret; 1066} 1067 1068static void rkvdec_remove(struct platform_device *pdev) 1069{ 1070 struct rkvdec_dev *rkvdec = platform_get_drvdata(pdev); 1071 1072 cancel_delayed_work_sync(&rkvdec->watchdog_work); 1073 1074 rkvdec_v4l2_cleanup(rkvdec); 1075 pm_runtime_disable(&pdev->dev); 1076 pm_runtime_dont_use_autosuspend(&pdev->dev); 1077} 1078 1079#ifdef CONFIG_PM 1080static int rkvdec_runtime_resume(struct device *dev) 1081{ 1082 struct rkvdec_dev *rkvdec = dev_get_drvdata(dev); 1083 1084 return clk_bulk_prepare_enable(ARRAY_SIZE(rkvdec_clk_names), 1085 rkvdec->clocks); 1086} 1087 1088static int rkvdec_runtime_suspend(struct device *dev) 1089{ 1090 struct rkvdec_dev *rkvdec = dev_get_drvdata(dev); 1091 1092 clk_bulk_disable_unprepare(ARRAY_SIZE(rkvdec_clk_names), 1093 rkvdec->clocks); 1094 return 0; 1095} 1096#endif 1097 1098static const struct dev_pm_ops rkvdec_pm_ops = { 1099 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, 1100 pm_runtime_force_resume) 1101 SET_RUNTIME_PM_OPS(rkvdec_runtime_suspend, rkvdec_runtime_resume, NULL) 1102}; 1103 1104static struct platform_driver rkvdec_driver = { 1105 .probe = rkvdec_probe, 1106 .remove_new = rkvdec_remove, 1107 .driver = { 1108 .name = "rkvdec", 1109 .of_match_table = of_rkvdec_match, 1110 .pm = &rkvdec_pm_ops, 1111 }, 1112}; 1113module_platform_driver(rkvdec_driver); 1114 1115MODULE_AUTHOR("Boris Brezillon <boris.brezillon@collabora.com>"); 1116MODULE_DESCRIPTION("Rockchip Video Decoder driver"); 1117MODULE_LICENSE("GPL v2"); 1118