1/* 2 * Samsung S5P G2D - 2D Graphics Accelerator Driver 3 * 4 * Copyright (c) 2011 Samsung Electronics Co., Ltd. 5 * Kamil Debski, <k.debski@samsung.com> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by the 9 * Free Software Foundation; either version 2 of the 10 * License, or (at your option) any later version 11 */ 12 13#include <linux/module.h> 14#include <linux/fs.h> 15#include <linux/timer.h> 16#include <linux/sched.h> 17#include <linux/slab.h> 18#include <linux/clk.h> 19#include <linux/interrupt.h> 20#include <linux/of.h> 21 22#include <linux/platform_device.h> 23#include <media/v4l2-mem2mem.h> 24#include <media/v4l2-device.h> 25#include <media/v4l2-ioctl.h> 26#include <media/videobuf2-core.h> 27#include <media/videobuf2-dma-contig.h> 28 29#include "g2d.h" 30#include "g2d-regs.h" 31 32#define fh2ctx(__fh) container_of(__fh, struct g2d_ctx, fh) 33 34static struct g2d_fmt formats[] = { 35 { 36 .name = "XRGB_8888", 37 .fourcc = V4L2_PIX_FMT_RGB32, 38 .depth = 32, 39 .hw = COLOR_MODE(ORDER_XRGB, MODE_XRGB_8888), 40 }, 41 { 42 .name = "RGB_565", 43 .fourcc = V4L2_PIX_FMT_RGB565X, 44 .depth = 16, 45 .hw = COLOR_MODE(ORDER_XRGB, MODE_RGB_565), 46 }, 47 { 48 .name = "XRGB_1555", 49 .fourcc = V4L2_PIX_FMT_RGB555X, 50 .depth = 16, 51 .hw = COLOR_MODE(ORDER_XRGB, MODE_XRGB_1555), 52 }, 53 { 54 .name = "XRGB_4444", 55 .fourcc = V4L2_PIX_FMT_RGB444, 56 .depth = 16, 57 .hw = COLOR_MODE(ORDER_XRGB, MODE_XRGB_4444), 58 }, 59 { 60 .name = "PACKED_RGB_888", 61 .fourcc = V4L2_PIX_FMT_RGB24, 62 .depth = 24, 63 .hw = COLOR_MODE(ORDER_XRGB, MODE_PACKED_RGB_888), 64 }, 65}; 66#define NUM_FORMATS ARRAY_SIZE(formats) 67 68static struct g2d_frame def_frame = { 69 .width = DEFAULT_WIDTH, 70 .height = DEFAULT_HEIGHT, 71 .c_width = DEFAULT_WIDTH, 72 .c_height = DEFAULT_HEIGHT, 73 .o_width = 0, 74 .o_height = 0, 75 .fmt = &formats[0], 76 .right = DEFAULT_WIDTH, 77 .bottom = DEFAULT_HEIGHT, 78}; 79 80static struct g2d_fmt *find_fmt(struct v4l2_format *f) 81{ 82 unsigned int i; 83 for (i = 0; i < NUM_FORMATS; i++) { 84 if (formats[i].fourcc == f->fmt.pix.pixelformat) 85 return &formats[i]; 86 } 87 return NULL; 88} 89 90 91static struct g2d_frame *get_frame(struct g2d_ctx *ctx, 92 enum v4l2_buf_type type) 93{ 94 switch (type) { 95 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 96 return &ctx->in; 97 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 98 return &ctx->out; 99 default: 100 return ERR_PTR(-EINVAL); 101 } 102} 103 104static int g2d_queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt, 105 unsigned int *nbuffers, unsigned int *nplanes, 106 unsigned int sizes[], void *alloc_ctxs[]) 107{ 108 struct g2d_ctx *ctx = vb2_get_drv_priv(vq); 109 struct g2d_frame *f = get_frame(ctx, vq->type); 110 111 if (IS_ERR(f)) 112 return PTR_ERR(f); 113 114 sizes[0] = f->size; 115 *nplanes = 1; 116 alloc_ctxs[0] = ctx->dev->alloc_ctx; 117 118 if (*nbuffers == 0) 119 *nbuffers = 1; 120 121 return 0; 122} 123 124static int g2d_buf_prepare(struct vb2_buffer *vb) 125{ 126 struct g2d_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); 127 struct g2d_frame *f = get_frame(ctx, vb->vb2_queue->type); 128 129 if (IS_ERR(f)) 130 return PTR_ERR(f); 131 vb2_set_plane_payload(vb, 0, f->size); 132 return 0; 133} 134 135static void g2d_buf_queue(struct vb2_buffer *vb) 136{ 137 struct g2d_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); 138 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vb); 139} 140 141static struct vb2_ops g2d_qops = { 142 .queue_setup = g2d_queue_setup, 143 .buf_prepare = g2d_buf_prepare, 144 .buf_queue = g2d_buf_queue, 145}; 146 147static int queue_init(void *priv, struct vb2_queue *src_vq, 148 struct vb2_queue *dst_vq) 149{ 150 struct g2d_ctx *ctx = priv; 151 int ret; 152 153 src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 154 src_vq->io_modes = VB2_MMAP | VB2_USERPTR; 155 src_vq->drv_priv = ctx; 156 src_vq->ops = &g2d_qops; 157 src_vq->mem_ops = &vb2_dma_contig_memops; 158 src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); 159 src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; 160 src_vq->lock = &ctx->dev->mutex; 161 162 ret = vb2_queue_init(src_vq); 163 if (ret) 164 return ret; 165 166 dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 167 dst_vq->io_modes = VB2_MMAP | VB2_USERPTR; 168 dst_vq->drv_priv = ctx; 169 dst_vq->ops = &g2d_qops; 170 dst_vq->mem_ops = &vb2_dma_contig_memops; 171 dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); 172 dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; 173 dst_vq->lock = &ctx->dev->mutex; 174 175 return vb2_queue_init(dst_vq); 176} 177 178static int g2d_s_ctrl(struct v4l2_ctrl *ctrl) 179{ 180 struct g2d_ctx *ctx = container_of(ctrl->handler, struct g2d_ctx, 181 ctrl_handler); 182 unsigned long flags; 183 184 spin_lock_irqsave(&ctx->dev->ctrl_lock, flags); 185 switch (ctrl->id) { 186 case V4L2_CID_COLORFX: 187 if (ctrl->val == V4L2_COLORFX_NEGATIVE) 188 ctx->rop = ROP4_INVERT; 189 else 190 ctx->rop = ROP4_COPY; 191 break; 192 193 case V4L2_CID_HFLIP: 194 ctx->flip = ctx->ctrl_hflip->val | (ctx->ctrl_vflip->val << 1); 195 break; 196 197 } 198 spin_unlock_irqrestore(&ctx->dev->ctrl_lock, flags); 199 return 0; 200} 201 202static const struct v4l2_ctrl_ops g2d_ctrl_ops = { 203 .s_ctrl = g2d_s_ctrl, 204}; 205 206static int g2d_setup_ctrls(struct g2d_ctx *ctx) 207{ 208 struct g2d_dev *dev = ctx->dev; 209 210 v4l2_ctrl_handler_init(&ctx->ctrl_handler, 3); 211 212 ctx->ctrl_hflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, &g2d_ctrl_ops, 213 V4L2_CID_HFLIP, 0, 1, 1, 0); 214 215 ctx->ctrl_vflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, &g2d_ctrl_ops, 216 V4L2_CID_VFLIP, 0, 1, 1, 0); 217 218 v4l2_ctrl_new_std_menu( 219 &ctx->ctrl_handler, 220 &g2d_ctrl_ops, 221 V4L2_CID_COLORFX, 222 V4L2_COLORFX_NEGATIVE, 223 ~((1 << V4L2_COLORFX_NONE) | (1 << V4L2_COLORFX_NEGATIVE)), 224 V4L2_COLORFX_NONE); 225 226 if (ctx->ctrl_handler.error) { 227 int err = ctx->ctrl_handler.error; 228 v4l2_err(&dev->v4l2_dev, "g2d_setup_ctrls failed\n"); 229 v4l2_ctrl_handler_free(&ctx->ctrl_handler); 230 return err; 231 } 232 233 v4l2_ctrl_cluster(2, &ctx->ctrl_hflip); 234 235 return 0; 236} 237 238static int g2d_open(struct file *file) 239{ 240 struct g2d_dev *dev = video_drvdata(file); 241 struct g2d_ctx *ctx = NULL; 242 int ret = 0; 243 244 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); 245 if (!ctx) 246 return -ENOMEM; 247 ctx->dev = dev; 248 /* Set default formats */ 249 ctx->in = def_frame; 250 ctx->out = def_frame; 251 252 if (mutex_lock_interruptible(&dev->mutex)) { 253 kfree(ctx); 254 return -ERESTARTSYS; 255 } 256 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx, &queue_init); 257 if (IS_ERR(ctx->fh.m2m_ctx)) { 258 ret = PTR_ERR(ctx->fh.m2m_ctx); 259 mutex_unlock(&dev->mutex); 260 kfree(ctx); 261 return ret; 262 } 263 v4l2_fh_init(&ctx->fh, video_devdata(file)); 264 file->private_data = &ctx->fh; 265 v4l2_fh_add(&ctx->fh); 266 267 g2d_setup_ctrls(ctx); 268 269 /* Write the default values to the ctx struct */ 270 v4l2_ctrl_handler_setup(&ctx->ctrl_handler); 271 272 ctx->fh.ctrl_handler = &ctx->ctrl_handler; 273 mutex_unlock(&dev->mutex); 274 275 v4l2_info(&dev->v4l2_dev, "instance opened\n"); 276 return 0; 277} 278 279static int g2d_release(struct file *file) 280{ 281 struct g2d_dev *dev = video_drvdata(file); 282 struct g2d_ctx *ctx = fh2ctx(file->private_data); 283 284 v4l2_ctrl_handler_free(&ctx->ctrl_handler); 285 v4l2_fh_del(&ctx->fh); 286 v4l2_fh_exit(&ctx->fh); 287 kfree(ctx); 288 v4l2_info(&dev->v4l2_dev, "instance closed\n"); 289 return 0; 290} 291 292 293static int vidioc_querycap(struct file *file, void *priv, 294 struct v4l2_capability *cap) 295{ 296 strncpy(cap->driver, G2D_NAME, sizeof(cap->driver) - 1); 297 strncpy(cap->card, G2D_NAME, sizeof(cap->card) - 1); 298 cap->bus_info[0] = 0; 299 cap->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING; 300 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; 301 return 0; 302} 303 304static int vidioc_enum_fmt(struct file *file, void *prv, struct v4l2_fmtdesc *f) 305{ 306 struct g2d_fmt *fmt; 307 if (f->index >= NUM_FORMATS) 308 return -EINVAL; 309 fmt = &formats[f->index]; 310 f->pixelformat = fmt->fourcc; 311 strncpy(f->description, fmt->name, sizeof(f->description) - 1); 312 return 0; 313} 314 315static int vidioc_g_fmt(struct file *file, void *prv, struct v4l2_format *f) 316{ 317 struct g2d_ctx *ctx = prv; 318 struct vb2_queue *vq; 319 struct g2d_frame *frm; 320 321 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type); 322 if (!vq) 323 return -EINVAL; 324 frm = get_frame(ctx, f->type); 325 if (IS_ERR(frm)) 326 return PTR_ERR(frm); 327 328 f->fmt.pix.width = frm->width; 329 f->fmt.pix.height = frm->height; 330 f->fmt.pix.field = V4L2_FIELD_NONE; 331 f->fmt.pix.pixelformat = frm->fmt->fourcc; 332 f->fmt.pix.bytesperline = (frm->width * frm->fmt->depth) >> 3; 333 f->fmt.pix.sizeimage = frm->size; 334 return 0; 335} 336 337static int vidioc_try_fmt(struct file *file, void *prv, struct v4l2_format *f) 338{ 339 struct g2d_fmt *fmt; 340 enum v4l2_field *field; 341 342 fmt = find_fmt(f); 343 if (!fmt) 344 return -EINVAL; 345 346 field = &f->fmt.pix.field; 347 if (*field == V4L2_FIELD_ANY) 348 *field = V4L2_FIELD_NONE; 349 else if (*field != V4L2_FIELD_NONE) 350 return -EINVAL; 351 352 if (f->fmt.pix.width > MAX_WIDTH) 353 f->fmt.pix.width = MAX_WIDTH; 354 if (f->fmt.pix.height > MAX_HEIGHT) 355 f->fmt.pix.height = MAX_HEIGHT; 356 357 if (f->fmt.pix.width < 1) 358 f->fmt.pix.width = 1; 359 if (f->fmt.pix.height < 1) 360 f->fmt.pix.height = 1; 361 362 f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3; 363 f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; 364 return 0; 365} 366 367static int vidioc_s_fmt(struct file *file, void *prv, struct v4l2_format *f) 368{ 369 struct g2d_ctx *ctx = prv; 370 struct g2d_dev *dev = ctx->dev; 371 struct vb2_queue *vq; 372 struct g2d_frame *frm; 373 struct g2d_fmt *fmt; 374 int ret = 0; 375 376 /* Adjust all values accordingly to the hardware capabilities 377 * and chosen format. */ 378 ret = vidioc_try_fmt(file, prv, f); 379 if (ret) 380 return ret; 381 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type); 382 if (vb2_is_busy(vq)) { 383 v4l2_err(&dev->v4l2_dev, "queue (%d) bust\n", f->type); 384 return -EBUSY; 385 } 386 frm = get_frame(ctx, f->type); 387 if (IS_ERR(frm)) 388 return PTR_ERR(frm); 389 fmt = find_fmt(f); 390 if (!fmt) 391 return -EINVAL; 392 frm->width = f->fmt.pix.width; 393 frm->height = f->fmt.pix.height; 394 frm->size = f->fmt.pix.sizeimage; 395 /* Reset crop settings */ 396 frm->o_width = 0; 397 frm->o_height = 0; 398 frm->c_width = frm->width; 399 frm->c_height = frm->height; 400 frm->right = frm->width; 401 frm->bottom = frm->height; 402 frm->fmt = fmt; 403 frm->stride = f->fmt.pix.bytesperline; 404 return 0; 405} 406 407static int vidioc_cropcap(struct file *file, void *priv, 408 struct v4l2_cropcap *cr) 409{ 410 struct g2d_ctx *ctx = priv; 411 struct g2d_frame *f; 412 413 f = get_frame(ctx, cr->type); 414 if (IS_ERR(f)) 415 return PTR_ERR(f); 416 417 cr->bounds.left = 0; 418 cr->bounds.top = 0; 419 cr->bounds.width = f->width; 420 cr->bounds.height = f->height; 421 cr->defrect = cr->bounds; 422 return 0; 423} 424 425static int vidioc_g_crop(struct file *file, void *prv, struct v4l2_crop *cr) 426{ 427 struct g2d_ctx *ctx = prv; 428 struct g2d_frame *f; 429 430 f = get_frame(ctx, cr->type); 431 if (IS_ERR(f)) 432 return PTR_ERR(f); 433 434 cr->c.left = f->o_height; 435 cr->c.top = f->o_width; 436 cr->c.width = f->c_width; 437 cr->c.height = f->c_height; 438 return 0; 439} 440 441static int vidioc_try_crop(struct file *file, void *prv, const struct v4l2_crop *cr) 442{ 443 struct g2d_ctx *ctx = prv; 444 struct g2d_dev *dev = ctx->dev; 445 struct g2d_frame *f; 446 447 f = get_frame(ctx, cr->type); 448 if (IS_ERR(f)) 449 return PTR_ERR(f); 450 451 if (cr->c.top < 0 || cr->c.left < 0) { 452 v4l2_err(&dev->v4l2_dev, 453 "doesn't support negative values for top & left\n"); 454 return -EINVAL; 455 } 456 457 return 0; 458} 459 460static int vidioc_s_crop(struct file *file, void *prv, const struct v4l2_crop *cr) 461{ 462 struct g2d_ctx *ctx = prv; 463 struct g2d_frame *f; 464 int ret; 465 466 ret = vidioc_try_crop(file, prv, cr); 467 if (ret) 468 return ret; 469 f = get_frame(ctx, cr->type); 470 if (IS_ERR(f)) 471 return PTR_ERR(f); 472 473 f->c_width = cr->c.width; 474 f->c_height = cr->c.height; 475 f->o_width = cr->c.left; 476 f->o_height = cr->c.top; 477 f->bottom = f->o_height + f->c_height; 478 f->right = f->o_width + f->c_width; 479 return 0; 480} 481 482static void job_abort(void *prv) 483{ 484 struct g2d_ctx *ctx = prv; 485 struct g2d_dev *dev = ctx->dev; 486 487 if (dev->curr == NULL) /* No job currently running */ 488 return; 489 490 wait_event_timeout(dev->irq_queue, 491 dev->curr == NULL, 492 msecs_to_jiffies(G2D_TIMEOUT)); 493} 494 495static void device_run(void *prv) 496{ 497 struct g2d_ctx *ctx = prv; 498 struct g2d_dev *dev = ctx->dev; 499 struct vb2_buffer *src, *dst; 500 unsigned long flags; 501 u32 cmd = 0; 502 503 dev->curr = ctx; 504 505 src = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx); 506 dst = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx); 507 508 clk_enable(dev->gate); 509 g2d_reset(dev); 510 511 spin_lock_irqsave(&dev->ctrl_lock, flags); 512 513 g2d_set_src_size(dev, &ctx->in); 514 g2d_set_src_addr(dev, vb2_dma_contig_plane_dma_addr(src, 0)); 515 516 g2d_set_dst_size(dev, &ctx->out); 517 g2d_set_dst_addr(dev, vb2_dma_contig_plane_dma_addr(dst, 0)); 518 519 g2d_set_rop4(dev, ctx->rop); 520 g2d_set_flip(dev, ctx->flip); 521 522 if (ctx->in.c_width != ctx->out.c_width || 523 ctx->in.c_height != ctx->out.c_height) { 524 if (dev->variant->hw_rev == TYPE_G2D_3X) 525 cmd |= CMD_V3_ENABLE_STRETCH; 526 else 527 g2d_set_v41_stretch(dev, &ctx->in, &ctx->out); 528 } 529 530 g2d_set_cmd(dev, cmd); 531 g2d_start(dev); 532 533 spin_unlock_irqrestore(&dev->ctrl_lock, flags); 534} 535 536static irqreturn_t g2d_isr(int irq, void *prv) 537{ 538 struct g2d_dev *dev = prv; 539 struct g2d_ctx *ctx = dev->curr; 540 struct vb2_buffer *src, *dst; 541 542 g2d_clear_int(dev); 543 clk_disable(dev->gate); 544 545 BUG_ON(ctx == NULL); 546 547 src = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx); 548 dst = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx); 549 550 BUG_ON(src == NULL); 551 BUG_ON(dst == NULL); 552 553 dst->v4l2_buf.timecode = src->v4l2_buf.timecode; 554 dst->v4l2_buf.timestamp = src->v4l2_buf.timestamp; 555 dst->v4l2_buf.flags &= ~V4L2_BUF_FLAG_TSTAMP_SRC_MASK; 556 dst->v4l2_buf.flags |= 557 src->v4l2_buf.flags & V4L2_BUF_FLAG_TSTAMP_SRC_MASK; 558 559 v4l2_m2m_buf_done(src, VB2_BUF_STATE_DONE); 560 v4l2_m2m_buf_done(dst, VB2_BUF_STATE_DONE); 561 v4l2_m2m_job_finish(dev->m2m_dev, ctx->fh.m2m_ctx); 562 563 dev->curr = NULL; 564 wake_up(&dev->irq_queue); 565 return IRQ_HANDLED; 566} 567 568static const struct v4l2_file_operations g2d_fops = { 569 .owner = THIS_MODULE, 570 .open = g2d_open, 571 .release = g2d_release, 572 .poll = v4l2_m2m_fop_poll, 573 .unlocked_ioctl = video_ioctl2, 574 .mmap = v4l2_m2m_fop_mmap, 575}; 576 577static const struct v4l2_ioctl_ops g2d_ioctl_ops = { 578 .vidioc_querycap = vidioc_querycap, 579 580 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt, 581 .vidioc_g_fmt_vid_cap = vidioc_g_fmt, 582 .vidioc_try_fmt_vid_cap = vidioc_try_fmt, 583 .vidioc_s_fmt_vid_cap = vidioc_s_fmt, 584 585 .vidioc_enum_fmt_vid_out = vidioc_enum_fmt, 586 .vidioc_g_fmt_vid_out = vidioc_g_fmt, 587 .vidioc_try_fmt_vid_out = vidioc_try_fmt, 588 .vidioc_s_fmt_vid_out = vidioc_s_fmt, 589 590 .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs, 591 .vidioc_querybuf = v4l2_m2m_ioctl_querybuf, 592 .vidioc_qbuf = v4l2_m2m_ioctl_qbuf, 593 .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf, 594 595 .vidioc_streamon = v4l2_m2m_ioctl_streamon, 596 .vidioc_streamoff = v4l2_m2m_ioctl_streamoff, 597 598 .vidioc_g_crop = vidioc_g_crop, 599 .vidioc_s_crop = vidioc_s_crop, 600 .vidioc_cropcap = vidioc_cropcap, 601}; 602 603static struct video_device g2d_videodev = { 604 .name = G2D_NAME, 605 .fops = &g2d_fops, 606 .ioctl_ops = &g2d_ioctl_ops, 607 .minor = -1, 608 .release = video_device_release, 609 .vfl_dir = VFL_DIR_M2M, 610}; 611 612static struct v4l2_m2m_ops g2d_m2m_ops = { 613 .device_run = device_run, 614 .job_abort = job_abort, 615}; 616 617static const struct of_device_id exynos_g2d_match[]; 618 619static int g2d_probe(struct platform_device *pdev) 620{ 621 struct g2d_dev *dev; 622 struct video_device *vfd; 623 struct resource *res; 624 const struct of_device_id *of_id; 625 int ret = 0; 626 627 dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL); 628 if (!dev) 629 return -ENOMEM; 630 631 spin_lock_init(&dev->ctrl_lock); 632 mutex_init(&dev->mutex); 633 atomic_set(&dev->num_inst, 0); 634 init_waitqueue_head(&dev->irq_queue); 635 636 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 637 638 dev->regs = devm_ioremap_resource(&pdev->dev, res); 639 if (IS_ERR(dev->regs)) 640 return PTR_ERR(dev->regs); 641 642 dev->clk = clk_get(&pdev->dev, "sclk_fimg2d"); 643 if (IS_ERR(dev->clk)) { 644 dev_err(&pdev->dev, "failed to get g2d clock\n"); 645 return -ENXIO; 646 } 647 648 ret = clk_prepare(dev->clk); 649 if (ret) { 650 dev_err(&pdev->dev, "failed to prepare g2d clock\n"); 651 goto put_clk; 652 } 653 654 dev->gate = clk_get(&pdev->dev, "fimg2d"); 655 if (IS_ERR(dev->gate)) { 656 dev_err(&pdev->dev, "failed to get g2d clock gate\n"); 657 ret = -ENXIO; 658 goto unprep_clk; 659 } 660 661 ret = clk_prepare(dev->gate); 662 if (ret) { 663 dev_err(&pdev->dev, "failed to prepare g2d clock gate\n"); 664 goto put_clk_gate; 665 } 666 667 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); 668 if (!res) { 669 dev_err(&pdev->dev, "failed to find IRQ\n"); 670 ret = -ENXIO; 671 goto unprep_clk_gate; 672 } 673 674 dev->irq = res->start; 675 676 ret = devm_request_irq(&pdev->dev, dev->irq, g2d_isr, 677 0, pdev->name, dev); 678 if (ret) { 679 dev_err(&pdev->dev, "failed to install IRQ\n"); 680 goto put_clk_gate; 681 } 682 683 dev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev); 684 if (IS_ERR(dev->alloc_ctx)) { 685 ret = PTR_ERR(dev->alloc_ctx); 686 goto unprep_clk_gate; 687 } 688 689 ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev); 690 if (ret) 691 goto alloc_ctx_cleanup; 692 vfd = video_device_alloc(); 693 if (!vfd) { 694 v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n"); 695 ret = -ENOMEM; 696 goto unreg_v4l2_dev; 697 } 698 *vfd = g2d_videodev; 699 vfd->lock = &dev->mutex; 700 vfd->v4l2_dev = &dev->v4l2_dev; 701 ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0); 702 if (ret) { 703 v4l2_err(&dev->v4l2_dev, "Failed to register video device\n"); 704 goto rel_vdev; 705 } 706 video_set_drvdata(vfd, dev); 707 snprintf(vfd->name, sizeof(vfd->name), "%s", g2d_videodev.name); 708 dev->vfd = vfd; 709 v4l2_info(&dev->v4l2_dev, "device registered as /dev/video%d\n", 710 vfd->num); 711 platform_set_drvdata(pdev, dev); 712 dev->m2m_dev = v4l2_m2m_init(&g2d_m2m_ops); 713 if (IS_ERR(dev->m2m_dev)) { 714 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n"); 715 ret = PTR_ERR(dev->m2m_dev); 716 goto unreg_video_dev; 717 } 718 719 def_frame.stride = (def_frame.width * def_frame.fmt->depth) >> 3; 720 721 if (!pdev->dev.of_node) { 722 dev->variant = g2d_get_drv_data(pdev); 723 } else { 724 of_id = of_match_node(exynos_g2d_match, pdev->dev.of_node); 725 if (!of_id) { 726 ret = -ENODEV; 727 goto unreg_video_dev; 728 } 729 dev->variant = (struct g2d_variant *)of_id->data; 730 } 731 732 return 0; 733 734unreg_video_dev: 735 video_unregister_device(dev->vfd); 736rel_vdev: 737 video_device_release(vfd); 738unreg_v4l2_dev: 739 v4l2_device_unregister(&dev->v4l2_dev); 740alloc_ctx_cleanup: 741 vb2_dma_contig_cleanup_ctx(dev->alloc_ctx); 742unprep_clk_gate: 743 clk_unprepare(dev->gate); 744put_clk_gate: 745 clk_put(dev->gate); 746unprep_clk: 747 clk_unprepare(dev->clk); 748put_clk: 749 clk_put(dev->clk); 750 751 return ret; 752} 753 754static int g2d_remove(struct platform_device *pdev) 755{ 756 struct g2d_dev *dev = platform_get_drvdata(pdev); 757 758 v4l2_info(&dev->v4l2_dev, "Removing " G2D_NAME); 759 v4l2_m2m_release(dev->m2m_dev); 760 video_unregister_device(dev->vfd); 761 v4l2_device_unregister(&dev->v4l2_dev); 762 vb2_dma_contig_cleanup_ctx(dev->alloc_ctx); 763 clk_unprepare(dev->gate); 764 clk_put(dev->gate); 765 clk_unprepare(dev->clk); 766 clk_put(dev->clk); 767 return 0; 768} 769 770static struct g2d_variant g2d_drvdata_v3x = { 771 .hw_rev = TYPE_G2D_3X, /* Revision 3.0 for S5PV210 and Exynos4210 */ 772}; 773 774static struct g2d_variant g2d_drvdata_v4x = { 775 .hw_rev = TYPE_G2D_4X, /* Revision 4.1 for Exynos4X12 and Exynos5 */ 776}; 777 778static const struct of_device_id exynos_g2d_match[] = { 779 { 780 .compatible = "samsung,s5pv210-g2d", 781 .data = &g2d_drvdata_v3x, 782 }, { 783 .compatible = "samsung,exynos4212-g2d", 784 .data = &g2d_drvdata_v4x, 785 }, 786 {}, 787}; 788MODULE_DEVICE_TABLE(of, exynos_g2d_match); 789 790static struct platform_device_id g2d_driver_ids[] = { 791 { 792 .name = "s5p-g2d", 793 .driver_data = (unsigned long)&g2d_drvdata_v3x, 794 }, { 795 .name = "s5p-g2d-v4x", 796 .driver_data = (unsigned long)&g2d_drvdata_v4x, 797 }, 798 {}, 799}; 800MODULE_DEVICE_TABLE(platform, g2d_driver_ids); 801 802static struct platform_driver g2d_pdrv = { 803 .probe = g2d_probe, 804 .remove = g2d_remove, 805 .id_table = g2d_driver_ids, 806 .driver = { 807 .name = G2D_NAME, 808 .of_match_table = exynos_g2d_match, 809 }, 810}; 811 812module_platform_driver(g2d_pdrv); 813 814MODULE_AUTHOR("Kamil Debski <k.debski@samsung.com>"); 815MODULE_DESCRIPTION("S5P G2D 2d graphics accelerator driver"); 816MODULE_LICENSE("GPL"); 817