1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Samsung S5P G2D - 2D Graphics Accelerator Driver 4 * 5 * Copyright (c) 2011 Samsung Electronics Co., Ltd. 6 * Kamil Debski, <k.debski@samsung.com> 7 */ 8 9 #include <linux/module.h> 10 #include <linux/fs.h> 11 #include <linux/timer.h> 12 #include <linux/sched.h> 13 #include <linux/slab.h> 14 #include <linux/clk.h> 15 #include <linux/interrupt.h> 16 #include <linux/of.h> 17 18 #include <linux/platform_device.h> 19 #include <media/v4l2-mem2mem.h> 20 #include <media/v4l2-device.h> 21 #include <media/v4l2-ioctl.h> 22 #include <media/videobuf2-v4l2.h> 23 #include <media/videobuf2-dma-contig.h> 24 25 #include "g2d.h" 26 #include "g2d-regs.h" 27 28 #define fh2ctx(__fh) container_of(__fh, struct g2d_ctx, fh) 29 30 static struct g2d_fmt formats[] = { 31 { 32 .fourcc = V4L2_PIX_FMT_RGB32, 33 .depth = 32, 34 .hw = COLOR_MODE(ORDER_XRGB, MODE_XRGB_8888), 35 }, 36 { 37 .fourcc = V4L2_PIX_FMT_RGB565X, 38 .depth = 16, 39 .hw = COLOR_MODE(ORDER_XRGB, MODE_RGB_565), 40 }, 41 { 42 .fourcc = V4L2_PIX_FMT_RGB555X, 43 .depth = 16, 44 .hw = COLOR_MODE(ORDER_XRGB, MODE_XRGB_1555), 45 }, 46 { 47 .fourcc = V4L2_PIX_FMT_RGB444, 48 .depth = 16, 49 .hw = COLOR_MODE(ORDER_XRGB, MODE_XRGB_4444), 50 }, 51 { 52 .fourcc = V4L2_PIX_FMT_RGB24, 53 .depth = 24, 54 .hw = COLOR_MODE(ORDER_XRGB, MODE_PACKED_RGB_888), 55 }, 56 }; 57 #define NUM_FORMATS ARRAY_SIZE(formats) 58 59 static struct g2d_frame def_frame = { 60 .width = DEFAULT_WIDTH, 61 .height = DEFAULT_HEIGHT, 62 .c_width = DEFAULT_WIDTH, 63 .c_height = DEFAULT_HEIGHT, 64 .o_width = 0, 65 .o_height = 0, 66 .fmt = &formats[0], 67 .right = DEFAULT_WIDTH, 68 .bottom = DEFAULT_HEIGHT, 69 }; 70 71 static struct g2d_fmt *find_fmt(struct v4l2_format *f) 72 { 73 unsigned int i; 74 for (i = 0; i < NUM_FORMATS; i++) { 75 if (formats[i].fourcc == f->fmt.pix.pixelformat) 76 return &formats[i]; 77 } 78 return NULL; 79 } 80 81 82 static struct g2d_frame *get_frame(struct g2d_ctx *ctx, 83 enum v4l2_buf_type type) 84 { 85 switch (type) { 86 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 87 return &ctx->in; 88 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 89 return &ctx->out; 90 default: 91 return ERR_PTR(-EINVAL); 92 } 93 } 94 95 static int g2d_queue_setup(struct vb2_queue *vq, 96 unsigned int *nbuffers, unsigned int *nplanes, 97 unsigned int sizes[], struct device *alloc_devs[]) 98 { 99 struct g2d_ctx *ctx = vb2_get_drv_priv(vq); 100 struct g2d_frame *f = get_frame(ctx, vq->type); 101 102 if (IS_ERR(f)) 103 return PTR_ERR(f); 104 105 sizes[0] = f->size; 106 *nplanes = 1; 107 108 if (*nbuffers == 0) 109 *nbuffers = 1; 110 111 return 0; 112 } 113 114 static int g2d_buf_prepare(struct vb2_buffer *vb) 115 { 116 struct g2d_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); 117 struct g2d_frame *f = get_frame(ctx, vb->vb2_queue->type); 118 119 if (IS_ERR(f)) 120 return PTR_ERR(f); 121 vb2_set_plane_payload(vb, 0, f->size); 122 return 0; 123 } 124 125 static void g2d_buf_queue(struct vb2_buffer *vb) 126 { 127 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); 128 struct g2d_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); 129 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf); 130 } 131 132 static const struct vb2_ops g2d_qops = { 133 .queue_setup = g2d_queue_setup, 134 .buf_prepare = g2d_buf_prepare, 135 .buf_queue = g2d_buf_queue, 136 .wait_prepare = vb2_ops_wait_prepare, 137 .wait_finish = vb2_ops_wait_finish, 138 }; 139 140 static int queue_init(void *priv, struct vb2_queue *src_vq, 141 struct vb2_queue *dst_vq) 142 { 143 struct g2d_ctx *ctx = priv; 144 int ret; 145 146 src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 147 src_vq->io_modes = VB2_MMAP | VB2_USERPTR; 148 src_vq->drv_priv = ctx; 149 src_vq->ops = &g2d_qops; 150 src_vq->mem_ops = &vb2_dma_contig_memops; 151 src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); 152 src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; 153 src_vq->lock = &ctx->dev->mutex; 154 src_vq->dev = ctx->dev->v4l2_dev.dev; 155 156 ret = vb2_queue_init(src_vq); 157 if (ret) 158 return ret; 159 160 dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 161 dst_vq->io_modes = VB2_MMAP | VB2_USERPTR; 162 dst_vq->drv_priv = ctx; 163 dst_vq->ops = &g2d_qops; 164 dst_vq->mem_ops = &vb2_dma_contig_memops; 165 dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); 166 dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; 167 dst_vq->lock = &ctx->dev->mutex; 168 dst_vq->dev = ctx->dev->v4l2_dev.dev; 169 170 return vb2_queue_init(dst_vq); 171 } 172 173 static int g2d_s_ctrl(struct v4l2_ctrl *ctrl) 174 { 175 struct g2d_ctx *ctx = container_of(ctrl->handler, struct g2d_ctx, 176 ctrl_handler); 177 unsigned long flags; 178 179 spin_lock_irqsave(&ctx->dev->ctrl_lock, flags); 180 switch (ctrl->id) { 181 case V4L2_CID_COLORFX: 182 if (ctrl->val == V4L2_COLORFX_NEGATIVE) 183 ctx->rop = ROP4_INVERT; 184 else 185 ctx->rop = ROP4_COPY; 186 break; 187 188 case V4L2_CID_HFLIP: 189 ctx->flip = ctx->ctrl_hflip->val | (ctx->ctrl_vflip->val << 1); 190 break; 191 192 } 193 spin_unlock_irqrestore(&ctx->dev->ctrl_lock, flags); 194 return 0; 195 } 196 197 static const struct v4l2_ctrl_ops g2d_ctrl_ops = { 198 .s_ctrl = g2d_s_ctrl, 199 }; 200 201 static int g2d_setup_ctrls(struct g2d_ctx *ctx) 202 { 203 struct g2d_dev *dev = ctx->dev; 204 205 v4l2_ctrl_handler_init(&ctx->ctrl_handler, 3); 206 207 ctx->ctrl_hflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, &g2d_ctrl_ops, 208 V4L2_CID_HFLIP, 0, 1, 1, 0); 209 210 ctx->ctrl_vflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, &g2d_ctrl_ops, 211 V4L2_CID_VFLIP, 0, 1, 1, 0); 212 213 v4l2_ctrl_new_std_menu( 214 &ctx->ctrl_handler, 215 &g2d_ctrl_ops, 216 V4L2_CID_COLORFX, 217 V4L2_COLORFX_NEGATIVE, 218 ~((1 << V4L2_COLORFX_NONE) | (1 << V4L2_COLORFX_NEGATIVE)), 219 V4L2_COLORFX_NONE); 220 221 if (ctx->ctrl_handler.error) { 222 int err = ctx->ctrl_handler.error; 223 v4l2_err(&dev->v4l2_dev, "g2d_setup_ctrls failed\n"); 224 v4l2_ctrl_handler_free(&ctx->ctrl_handler); 225 return err; 226 } 227 228 v4l2_ctrl_cluster(2, &ctx->ctrl_hflip); 229 230 return 0; 231 } 232 233 static int g2d_open(struct file *file) 234 { 235 struct g2d_dev *dev = video_drvdata(file); 236 struct g2d_ctx *ctx = NULL; 237 int ret = 0; 238 239 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); 240 if (!ctx) 241 return -ENOMEM; 242 ctx->dev = dev; 243 /* Set default formats */ 244 ctx->in = def_frame; 245 ctx->out = def_frame; 246 247 if (mutex_lock_interruptible(&dev->mutex)) { 248 kfree(ctx); 249 return -ERESTARTSYS; 250 } 251 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx, &queue_init); 252 if (IS_ERR(ctx->fh.m2m_ctx)) { 253 ret = PTR_ERR(ctx->fh.m2m_ctx); 254 mutex_unlock(&dev->mutex); 255 kfree(ctx); 256 return ret; 257 } 258 v4l2_fh_init(&ctx->fh, video_devdata(file)); 259 file->private_data = &ctx->fh; 260 v4l2_fh_add(&ctx->fh); 261 262 g2d_setup_ctrls(ctx); 263 264 /* Write the default values to the ctx struct */ 265 v4l2_ctrl_handler_setup(&ctx->ctrl_handler); 266 267 ctx->fh.ctrl_handler = &ctx->ctrl_handler; 268 mutex_unlock(&dev->mutex); 269 270 v4l2_info(&dev->v4l2_dev, "instance opened\n"); 271 return 0; 272 } 273 274 static int g2d_release(struct file *file) 275 { 276 struct g2d_dev *dev = video_drvdata(file); 277 struct g2d_ctx *ctx = fh2ctx(file->private_data); 278 279 mutex_lock(&dev->mutex); 280 v4l2_m2m_ctx_release(ctx->fh.m2m_ctx); 281 mutex_unlock(&dev->mutex); 282 v4l2_ctrl_handler_free(&ctx->ctrl_handler); 283 v4l2_fh_del(&ctx->fh); 284 v4l2_fh_exit(&ctx->fh); 285 kfree(ctx); 286 v4l2_info(&dev->v4l2_dev, "instance closed\n"); 287 return 0; 288 } 289 290 291 static int vidioc_querycap(struct file *file, void *priv, 292 struct v4l2_capability *cap) 293 { 294 strscpy(cap->driver, G2D_NAME, sizeof(cap->driver)); 295 strscpy(cap->card, G2D_NAME, sizeof(cap->card)); 296 cap->bus_info[0] = 0; 297 return 0; 298 } 299 300 static int vidioc_enum_fmt(struct file *file, void *prv, struct v4l2_fmtdesc *f) 301 { 302 if (f->index >= NUM_FORMATS) 303 return -EINVAL; 304 f->pixelformat = formats[f->index].fourcc; 305 return 0; 306 } 307 308 static int vidioc_g_fmt(struct file *file, void *prv, struct v4l2_format *f) 309 { 310 struct g2d_ctx *ctx = prv; 311 struct vb2_queue *vq; 312 struct g2d_frame *frm; 313 314 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type); 315 if (!vq) 316 return -EINVAL; 317 frm = get_frame(ctx, f->type); 318 if (IS_ERR(frm)) 319 return PTR_ERR(frm); 320 321 f->fmt.pix.width = frm->width; 322 f->fmt.pix.height = frm->height; 323 f->fmt.pix.field = V4L2_FIELD_NONE; 324 f->fmt.pix.pixelformat = frm->fmt->fourcc; 325 f->fmt.pix.bytesperline = (frm->width * frm->fmt->depth) >> 3; 326 f->fmt.pix.sizeimage = frm->size; 327 return 0; 328 } 329 330 static int vidioc_try_fmt(struct file *file, void *prv, struct v4l2_format *f) 331 { 332 struct g2d_fmt *fmt; 333 enum v4l2_field *field; 334 335 fmt = find_fmt(f); 336 if (!fmt) 337 return -EINVAL; 338 339 field = &f->fmt.pix.field; 340 if (*field == V4L2_FIELD_ANY) 341 *field = V4L2_FIELD_NONE; 342 else if (*field != V4L2_FIELD_NONE) 343 return -EINVAL; 344 345 if (f->fmt.pix.width > MAX_WIDTH) 346 f->fmt.pix.width = MAX_WIDTH; 347 if (f->fmt.pix.height > MAX_HEIGHT) 348 f->fmt.pix.height = MAX_HEIGHT; 349 350 if (f->fmt.pix.width < 1) 351 f->fmt.pix.width = 1; 352 if (f->fmt.pix.height < 1) 353 f->fmt.pix.height = 1; 354 355 f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3; 356 f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; 357 return 0; 358 } 359 360 static int vidioc_s_fmt(struct file *file, void *prv, struct v4l2_format *f) 361 { 362 struct g2d_ctx *ctx = prv; 363 struct g2d_dev *dev = ctx->dev; 364 struct vb2_queue *vq; 365 struct g2d_frame *frm; 366 struct g2d_fmt *fmt; 367 int ret = 0; 368 369 /* Adjust all values accordingly to the hardware capabilities 370 * and chosen format. */ 371 ret = vidioc_try_fmt(file, prv, f); 372 if (ret) 373 return ret; 374 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type); 375 if (vb2_is_busy(vq)) { 376 v4l2_err(&dev->v4l2_dev, "queue (%d) bust\n", f->type); 377 return -EBUSY; 378 } 379 frm = get_frame(ctx, f->type); 380 if (IS_ERR(frm)) 381 return PTR_ERR(frm); 382 fmt = find_fmt(f); 383 if (!fmt) 384 return -EINVAL; 385 frm->width = f->fmt.pix.width; 386 frm->height = f->fmt.pix.height; 387 frm->size = f->fmt.pix.sizeimage; 388 /* Reset crop settings */ 389 frm->o_width = 0; 390 frm->o_height = 0; 391 frm->c_width = frm->width; 392 frm->c_height = frm->height; 393 frm->right = frm->width; 394 frm->bottom = frm->height; 395 frm->fmt = fmt; 396 frm->stride = f->fmt.pix.bytesperline; 397 return 0; 398 } 399 400 static int vidioc_g_selection(struct file *file, void *prv, 401 struct v4l2_selection *s) 402 { 403 struct g2d_ctx *ctx = prv; 404 struct g2d_frame *f; 405 406 f = get_frame(ctx, s->type); 407 if (IS_ERR(f)) 408 return PTR_ERR(f); 409 410 switch (s->target) { 411 case V4L2_SEL_TGT_CROP: 412 case V4L2_SEL_TGT_CROP_DEFAULT: 413 case V4L2_SEL_TGT_CROP_BOUNDS: 414 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) 415 return -EINVAL; 416 break; 417 case V4L2_SEL_TGT_COMPOSE: 418 case V4L2_SEL_TGT_COMPOSE_DEFAULT: 419 case V4L2_SEL_TGT_COMPOSE_BOUNDS: 420 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) 421 return -EINVAL; 422 break; 423 default: 424 return -EINVAL; 425 } 426 427 switch (s->target) { 428 case V4L2_SEL_TGT_CROP: 429 case V4L2_SEL_TGT_COMPOSE: 430 s->r.left = f->o_height; 431 s->r.top = f->o_width; 432 s->r.width = f->c_width; 433 s->r.height = f->c_height; 434 break; 435 case V4L2_SEL_TGT_CROP_DEFAULT: 436 case V4L2_SEL_TGT_CROP_BOUNDS: 437 case V4L2_SEL_TGT_COMPOSE_DEFAULT: 438 case V4L2_SEL_TGT_COMPOSE_BOUNDS: 439 s->r.left = 0; 440 s->r.top = 0; 441 s->r.width = f->width; 442 s->r.height = f->height; 443 break; 444 default: 445 return -EINVAL; 446 } 447 return 0; 448 } 449 450 static int vidioc_try_selection(struct file *file, void *prv, 451 const struct v4l2_selection *s) 452 { 453 struct g2d_ctx *ctx = prv; 454 struct g2d_dev *dev = ctx->dev; 455 struct g2d_frame *f; 456 457 f = get_frame(ctx, s->type); 458 if (IS_ERR(f)) 459 return PTR_ERR(f); 460 461 if (s->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { 462 if (s->target != V4L2_SEL_TGT_COMPOSE) 463 return -EINVAL; 464 } else if (s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) { 465 if (s->target != V4L2_SEL_TGT_CROP) 466 return -EINVAL; 467 } 468 469 if (s->r.top < 0 || s->r.left < 0) { 470 v4l2_err(&dev->v4l2_dev, 471 "doesn't support negative values for top & left\n"); 472 return -EINVAL; 473 } 474 475 return 0; 476 } 477 478 static int vidioc_s_selection(struct file *file, void *prv, 479 struct v4l2_selection *s) 480 { 481 struct g2d_ctx *ctx = prv; 482 struct g2d_frame *f; 483 int ret; 484 485 ret = vidioc_try_selection(file, prv, s); 486 if (ret) 487 return ret; 488 f = get_frame(ctx, s->type); 489 if (IS_ERR(f)) 490 return PTR_ERR(f); 491 492 f->c_width = s->r.width; 493 f->c_height = s->r.height; 494 f->o_width = s->r.left; 495 f->o_height = s->r.top; 496 f->bottom = f->o_height + f->c_height; 497 f->right = f->o_width + f->c_width; 498 return 0; 499 } 500 501 static void device_run(void *prv) 502 { 503 struct g2d_ctx *ctx = prv; 504 struct g2d_dev *dev = ctx->dev; 505 struct vb2_v4l2_buffer *src, *dst; 506 unsigned long flags; 507 u32 cmd = 0; 508 509 dev->curr = ctx; 510 511 src = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx); 512 dst = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx); 513 514 clk_enable(dev->gate); 515 g2d_reset(dev); 516 517 spin_lock_irqsave(&dev->ctrl_lock, flags); 518 519 g2d_set_src_size(dev, &ctx->in); 520 g2d_set_src_addr(dev, vb2_dma_contig_plane_dma_addr(&src->vb2_buf, 0)); 521 522 g2d_set_dst_size(dev, &ctx->out); 523 g2d_set_dst_addr(dev, vb2_dma_contig_plane_dma_addr(&dst->vb2_buf, 0)); 524 525 g2d_set_rop4(dev, ctx->rop); 526 g2d_set_flip(dev, ctx->flip); 527 528 if (ctx->in.c_width != ctx->out.c_width || 529 ctx->in.c_height != ctx->out.c_height) { 530 if (dev->variant->hw_rev == TYPE_G2D_3X) 531 cmd |= CMD_V3_ENABLE_STRETCH; 532 else 533 g2d_set_v41_stretch(dev, &ctx->in, &ctx->out); 534 } 535 536 g2d_set_cmd(dev, cmd); 537 g2d_start(dev); 538 539 spin_unlock_irqrestore(&dev->ctrl_lock, flags); 540 } 541 542 static irqreturn_t g2d_isr(int irq, void *prv) 543 { 544 struct g2d_dev *dev = prv; 545 struct g2d_ctx *ctx = dev->curr; 546 struct vb2_v4l2_buffer *src, *dst; 547 548 g2d_clear_int(dev); 549 clk_disable(dev->gate); 550 551 BUG_ON(ctx == NULL); 552 553 src = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx); 554 dst = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx); 555 556 BUG_ON(src == NULL); 557 BUG_ON(dst == NULL); 558 559 dst->timecode = src->timecode; 560 dst->vb2_buf.timestamp = src->vb2_buf.timestamp; 561 dst->flags &= ~V4L2_BUF_FLAG_TSTAMP_SRC_MASK; 562 dst->flags |= 563 src->flags & V4L2_BUF_FLAG_TSTAMP_SRC_MASK; 564 565 v4l2_m2m_buf_done(src, VB2_BUF_STATE_DONE); 566 v4l2_m2m_buf_done(dst, VB2_BUF_STATE_DONE); 567 v4l2_m2m_job_finish(dev->m2m_dev, ctx->fh.m2m_ctx); 568 569 dev->curr = NULL; 570 return IRQ_HANDLED; 571 } 572 573 static const struct v4l2_file_operations g2d_fops = { 574 .owner = THIS_MODULE, 575 .open = g2d_open, 576 .release = g2d_release, 577 .poll = v4l2_m2m_fop_poll, 578 .unlocked_ioctl = video_ioctl2, 579 .mmap = v4l2_m2m_fop_mmap, 580 }; 581 582 static const struct v4l2_ioctl_ops g2d_ioctl_ops = { 583 .vidioc_querycap = vidioc_querycap, 584 585 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt, 586 .vidioc_g_fmt_vid_cap = vidioc_g_fmt, 587 .vidioc_try_fmt_vid_cap = vidioc_try_fmt, 588 .vidioc_s_fmt_vid_cap = vidioc_s_fmt, 589 590 .vidioc_enum_fmt_vid_out = vidioc_enum_fmt, 591 .vidioc_g_fmt_vid_out = vidioc_g_fmt, 592 .vidioc_try_fmt_vid_out = vidioc_try_fmt, 593 .vidioc_s_fmt_vid_out = vidioc_s_fmt, 594 595 .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs, 596 .vidioc_querybuf = v4l2_m2m_ioctl_querybuf, 597 .vidioc_qbuf = v4l2_m2m_ioctl_qbuf, 598 .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf, 599 600 .vidioc_streamon = v4l2_m2m_ioctl_streamon, 601 .vidioc_streamoff = v4l2_m2m_ioctl_streamoff, 602 603 .vidioc_g_selection = vidioc_g_selection, 604 .vidioc_s_selection = vidioc_s_selection, 605 }; 606 607 static const struct video_device g2d_videodev = { 608 .name = G2D_NAME, 609 .fops = &g2d_fops, 610 .ioctl_ops = &g2d_ioctl_ops, 611 .minor = -1, 612 .release = video_device_release, 613 .vfl_dir = VFL_DIR_M2M, 614 }; 615 616 static const struct v4l2_m2m_ops g2d_m2m_ops = { 617 .device_run = device_run, 618 }; 619 620 static const struct of_device_id exynos_g2d_match[]; 621 622 static int g2d_probe(struct platform_device *pdev) 623 { 624 struct g2d_dev *dev; 625 struct video_device *vfd; 626 const struct of_device_id *of_id; 627 int ret = 0; 628 629 dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL); 630 if (!dev) 631 return -ENOMEM; 632 633 spin_lock_init(&dev->ctrl_lock); 634 mutex_init(&dev->mutex); 635 atomic_set(&dev->num_inst, 0); 636 637 dev->regs = devm_platform_ioremap_resource(pdev, 0); 638 if (IS_ERR(dev->regs)) 639 return PTR_ERR(dev->regs); 640 641 dev->clk = clk_get(&pdev->dev, "sclk_fimg2d"); 642 if (IS_ERR(dev->clk)) { 643 dev_err(&pdev->dev, "failed to get g2d clock\n"); 644 return -ENXIO; 645 } 646 647 ret = clk_prepare(dev->clk); 648 if (ret) { 649 dev_err(&pdev->dev, "failed to prepare g2d clock\n"); 650 goto put_clk; 651 } 652 653 dev->gate = clk_get(&pdev->dev, "fimg2d"); 654 if (IS_ERR(dev->gate)) { 655 dev_err(&pdev->dev, "failed to get g2d clock gate\n"); 656 ret = -ENXIO; 657 goto unprep_clk; 658 } 659 660 ret = clk_prepare(dev->gate); 661 if (ret) { 662 dev_err(&pdev->dev, "failed to prepare g2d clock gate\n"); 663 goto put_clk_gate; 664 } 665 666 ret = platform_get_irq(pdev, 0); 667 if (ret < 0) 668 goto unprep_clk_gate; 669 670 dev->irq = ret; 671 672 ret = devm_request_irq(&pdev->dev, dev->irq, g2d_isr, 673 0, pdev->name, dev); 674 if (ret) { 675 dev_err(&pdev->dev, "failed to install IRQ\n"); 676 goto unprep_clk_gate; 677 } 678 679 vb2_dma_contig_set_max_seg_size(&pdev->dev, DMA_BIT_MASK(32)); 680 681 ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev); 682 if (ret) 683 goto unprep_clk_gate; 684 vfd = video_device_alloc(); 685 if (!vfd) { 686 v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n"); 687 ret = -ENOMEM; 688 goto unreg_v4l2_dev; 689 } 690 *vfd = g2d_videodev; 691 set_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags); 692 vfd->lock = &dev->mutex; 693 vfd->v4l2_dev = &dev->v4l2_dev; 694 vfd->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING; 695 696 platform_set_drvdata(pdev, dev); 697 dev->m2m_dev = v4l2_m2m_init(&g2d_m2m_ops); 698 if (IS_ERR(dev->m2m_dev)) { 699 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n"); 700 ret = PTR_ERR(dev->m2m_dev); 701 goto rel_vdev; 702 } 703 704 def_frame.stride = (def_frame.width * def_frame.fmt->depth) >> 3; 705 706 of_id = of_match_node(exynos_g2d_match, pdev->dev.of_node); 707 if (!of_id) { 708 ret = -ENODEV; 709 goto free_m2m; 710 } 711 dev->variant = (struct g2d_variant *)of_id->data; 712 713 ret = video_register_device(vfd, VFL_TYPE_VIDEO, 0); 714 if (ret) { 715 v4l2_err(&dev->v4l2_dev, "Failed to register video device\n"); 716 goto free_m2m; 717 } 718 video_set_drvdata(vfd, dev); 719 dev->vfd = vfd; 720 v4l2_info(&dev->v4l2_dev, "device registered as /dev/video%d\n", 721 vfd->num); 722 723 return 0; 724 725 free_m2m: 726 v4l2_m2m_release(dev->m2m_dev); 727 rel_vdev: 728 video_device_release(vfd); 729 unreg_v4l2_dev: 730 v4l2_device_unregister(&dev->v4l2_dev); 731 unprep_clk_gate: 732 clk_unprepare(dev->gate); 733 put_clk_gate: 734 clk_put(dev->gate); 735 unprep_clk: 736 clk_unprepare(dev->clk); 737 put_clk: 738 clk_put(dev->clk); 739 740 return ret; 741 } 742 743 static void g2d_remove(struct platform_device *pdev) 744 { 745 struct g2d_dev *dev = platform_get_drvdata(pdev); 746 747 v4l2_info(&dev->v4l2_dev, "Removing " G2D_NAME); 748 v4l2_m2m_release(dev->m2m_dev); 749 video_unregister_device(dev->vfd); 750 v4l2_device_unregister(&dev->v4l2_dev); 751 vb2_dma_contig_clear_max_seg_size(&pdev->dev); 752 clk_unprepare(dev->gate); 753 clk_put(dev->gate); 754 clk_unprepare(dev->clk); 755 clk_put(dev->clk); 756 } 757 758 static struct g2d_variant g2d_drvdata_v3x = { 759 .hw_rev = TYPE_G2D_3X, /* Revision 3.0 for S5PV210 and Exynos4210 */ 760 }; 761 762 static struct g2d_variant g2d_drvdata_v4x = { 763 .hw_rev = TYPE_G2D_4X, /* Revision 4.1 for Exynos4X12 and Exynos5 */ 764 }; 765 766 static const struct of_device_id exynos_g2d_match[] = { 767 { 768 .compatible = "samsung,s5pv210-g2d", 769 .data = &g2d_drvdata_v3x, 770 }, { 771 .compatible = "samsung,exynos4212-g2d", 772 .data = &g2d_drvdata_v4x, 773 }, 774 {}, 775 }; 776 MODULE_DEVICE_TABLE(of, exynos_g2d_match); 777 778 static struct platform_driver g2d_pdrv = { 779 .probe = g2d_probe, 780 .remove_new = g2d_remove, 781 .driver = { 782 .name = G2D_NAME, 783 .of_match_table = exynos_g2d_match, 784 }, 785 }; 786 787 module_platform_driver(g2d_pdrv); 788 789 MODULE_AUTHOR("Kamil Debski <k.debski@samsung.com>"); 790 MODULE_DESCRIPTION("S5P G2D 2d graphics accelerator driver"); 791 MODULE_LICENSE("GPL"); 792