drivers/media/platform/s5p-g2d/g2d.c

   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/version.h>
  16 #include <linux/timer.h>
  17 #include <linux/sched.h>
  18 #include <linux/slab.h>
  19 #include <linux/clk.h>
  20 #include <linux/interrupt.h>
  21 #include <linux/of.h>
  22
  23 #include <linux/platform_device.h>
  24 #include <media/v4l2-mem2mem.h>
  25 #include <media/v4l2-device.h>
  26 #include <media/v4l2-ioctl.h>
  27 #include <media/videobuf2-core.h>
  28 #include <media/videobuf2-dma-contig.h>
  29
  30 #include "g2d.h"
  31 #include "g2d-regs.h"
  32
  33 #define fh2ctx(__fh) container_of(__fh, struct g2d_ctx, fh)
  34
  35 static struct g2d_fmt formats[] = {
  36         {
  37                 .name   = "XRGB_8888",
  38                 .fourcc = V4L2_PIX_FMT_RGB32,
  39                 .depth  = 32,
  40                 .hw     = COLOR_MODE(ORDER_XRGB, MODE_XRGB_8888),
  41         },
  42         {
  43                 .name   = "RGB_565",
  44                 .fourcc = V4L2_PIX_FMT_RGB565X,
  45                 .depth  = 16,
  46                 .hw     = COLOR_MODE(ORDER_XRGB, MODE_RGB_565),
  47         },
  48         {
  49                 .name   = "XRGB_1555",
  50                 .fourcc = V4L2_PIX_FMT_RGB555X,
  51                 .depth  = 16,
  52                 .hw     = COLOR_MODE(ORDER_XRGB, MODE_XRGB_1555),
  53         },
  54         {
  55                 .name   = "XRGB_4444",
  56                 .fourcc = V4L2_PIX_FMT_RGB444,
  57                 .depth  = 16,
  58                 .hw     = COLOR_MODE(ORDER_XRGB, MODE_XRGB_4444),
  59         },
  60         {
  61                 .name   = "PACKED_RGB_888",
  62                 .fourcc = V4L2_PIX_FMT_RGB24,
  63                 .depth  = 24,
  64                 .hw     = COLOR_MODE(ORDER_XRGB, MODE_PACKED_RGB_888),
  65         },
  66 };
  67 #define NUM_FORMATS ARRAY_SIZE(formats)
  68
  69 static struct g2d_frame def_frame = {
  70         .width          = DEFAULT_WIDTH,
  71         .height         = DEFAULT_HEIGHT,
  72         .c_width        = DEFAULT_WIDTH,
  73         .c_height       = DEFAULT_HEIGHT,
  74         .o_width        = 0,
  75         .o_height       = 0,
  76         .fmt            = &formats[0],
  77         .right          = DEFAULT_WIDTH,
  78         .bottom         = DEFAULT_HEIGHT,
  79 };
  80
  81 static struct g2d_fmt *find_fmt(struct v4l2_format *f)
  82 {
  83         unsigned int i;
  84         for (i = 0; i < NUM_FORMATS; i++) {
  85                 if (formats[i].fourcc == f->fmt.pix.pixelformat)
  86                         return &formats[i];
  87         }
  88         return NULL;
  89 }
  90
  91
  92 static struct g2d_frame *get_frame(struct g2d_ctx *ctx,
  93                                                         enum v4l2_buf_type type)
  94 {
  95         switch (type) {
  96         case V4L2_BUF_TYPE_VIDEO_OUTPUT:
  97                 return &ctx->in;
  98         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
  99                 return &ctx->out;
 100         default:
 101                 return ERR_PTR(-EINVAL);
 102         }
 103 }
 104
 105 static int g2d_queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt,
 106                            unsigned int *nbuffers, unsigned int *nplanes,
 107                            unsigned int sizes[], void *alloc_ctxs[])
 108 {
 109         struct g2d_ctx *ctx = vb2_get_drv_priv(vq);
 110         struct g2d_frame *f = get_frame(ctx, vq->type);
 111
 112         if (IS_ERR(f))
 113                 return PTR_ERR(f);
 114
 115         sizes[0] = f->size;
 116         *nplanes = 1;
 117         alloc_ctxs[0] = ctx->dev->alloc_ctx;
 118
 119         if (*nbuffers == 0)
 120                 *nbuffers = 1;
 121
 122         return 0;
 123 }
 124
 125 static int g2d_buf_prepare(struct vb2_buffer *vb)
 126 {
 127         struct g2d_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
 128         struct g2d_frame *f = get_frame(ctx, vb->vb2_queue->type);
 129
 130         if (IS_ERR(f))
 131                 return PTR_ERR(f);
 132         vb2_set_plane_payload(vb, 0, f->size);
 133         return 0;
 134 }
 135
 136 static void g2d_buf_queue(struct vb2_buffer *vb)
 137 {
 138         struct g2d_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
 139         v4l2_m2m_buf_queue(ctx->m2m_ctx, vb);
 140 }
 141
 142
 143 static struct vb2_ops g2d_qops = {
 144         .queue_setup    = g2d_queue_setup,
 145         .buf_prepare    = g2d_buf_prepare,
 146         .buf_queue      = g2d_buf_queue,
 147 };
 148
 149 static int queue_init(void *priv, struct vb2_queue *src_vq,
 150                                                 struct vb2_queue *dst_vq)
 151 {
 152         struct g2d_ctx *ctx = priv;
 153         int ret;
 154
 155         src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
 156         src_vq->io_modes = VB2_MMAP | VB2_USERPTR;
 157         src_vq->drv_priv = ctx;
 158         src_vq->ops = &g2d_qops;
 159         src_vq->mem_ops = &vb2_dma_contig_memops;
 160         src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
 161         src_vq->timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_COPY;
 162
 163         ret = vb2_queue_init(src_vq);
 164         if (ret)
 165                 return ret;
 166
 167         dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 168         dst_vq->io_modes = VB2_MMAP | VB2_USERPTR;
 169         dst_vq->drv_priv = ctx;
 170         dst_vq->ops = &g2d_qops;
 171         dst_vq->mem_ops = &vb2_dma_contig_memops;
 172         dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
 173         dst_vq->timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_COPY;
 174
 175         return vb2_queue_init(dst_vq);
 176 }
 177
 178 static 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
 202 static const struct v4l2_ctrl_ops g2d_ctrl_ops = {
 203         .s_ctrl         = g2d_s_ctrl,
 204 };
 205
 206 static 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
 238 static 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->m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx, &queue_init);
 257         if (IS_ERR(ctx->m2m_ctx)) {
 258                 ret = PTR_ERR(ctx->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
 279 static 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
 293 static 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->version = KERNEL_VERSION(1, 0, 0);
 300         /*
 301          * This is only a mem-to-mem video device. The capture and output
 302          * device capability flags are left only for backward compatibility
 303          * and are scheduled for removal.
 304          */
 305         cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT |
 306                             V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
 307         return 0;
 308 }
 309
 310 static int vidioc_enum_fmt(struct file *file, void *prv, struct v4l2_fmtdesc *f)
 311 {
 312         struct g2d_fmt *fmt;
 313         if (f->index >= NUM_FORMATS)
 314                 return -EINVAL;
 315         fmt = &formats[f->index];
 316         f->pixelformat = fmt->fourcc;
 317         strncpy(f->description, fmt->name, sizeof(f->description) - 1);
 318         return 0;
 319 }
 320
 321 static int vidioc_g_fmt(struct file *file, void *prv, struct v4l2_format *f)
 322 {
 323         struct g2d_ctx *ctx = prv;
 324         struct vb2_queue *vq;
 325         struct g2d_frame *frm;
 326
 327         vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type);
 328         if (!vq)
 329                 return -EINVAL;
 330         frm = get_frame(ctx, f->type);
 331         if (IS_ERR(frm))
 332                 return PTR_ERR(frm);
 333
 334         f->fmt.pix.width                = frm->width;
 335         f->fmt.pix.height               = frm->height;
 336         f->fmt.pix.field                = V4L2_FIELD_NONE;
 337         f->fmt.pix.pixelformat          = frm->fmt->fourcc;
 338         f->fmt.pix.bytesperline         = (frm->width * frm->fmt->depth) >> 3;
 339         f->fmt.pix.sizeimage            = frm->size;
 340         return 0;
 341 }
 342
 343 static int vidioc_try_fmt(struct file *file, void *prv, struct v4l2_format *f)
 344 {
 345         struct g2d_fmt *fmt;
 346         enum v4l2_field *field;
 347
 348         fmt = find_fmt(f);
 349         if (!fmt)
 350                 return -EINVAL;
 351
 352         field = &f->fmt.pix.field;
 353         if (*field == V4L2_FIELD_ANY)
 354                 *field = V4L2_FIELD_NONE;
 355         else if (*field != V4L2_FIELD_NONE)
 356                 return -EINVAL;
 357
 358         if (f->fmt.pix.width > MAX_WIDTH)
 359                 f->fmt.pix.width = MAX_WIDTH;
 360         if (f->fmt.pix.height > MAX_HEIGHT)
 361                 f->fmt.pix.height = MAX_HEIGHT;
 362
 363         if (f->fmt.pix.width < 1)
 364                 f->fmt.pix.width = 1;
 365         if (f->fmt.pix.height < 1)
 366                 f->fmt.pix.height = 1;
 367
 368         f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
 369         f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
 370         return 0;
 371 }
 372
 373 static int vidioc_s_fmt(struct file *file, void *prv, struct v4l2_format *f)
 374 {
 375         struct g2d_ctx *ctx = prv;
 376         struct g2d_dev *dev = ctx->dev;
 377         struct vb2_queue *vq;
 378         struct g2d_frame *frm;
 379         struct g2d_fmt *fmt;
 380         int ret = 0;
 381
 382         /* Adjust all values accordingly to the hardware capabilities
 383          * and chosen format. */
 384         ret = vidioc_try_fmt(file, prv, f);
 385         if (ret)
 386                 return ret;
 387         vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type);
 388         if (vb2_is_busy(vq)) {
 389                 v4l2_err(&dev->v4l2_dev, "queue (%d) bust\n", f->type);
 390                 return -EBUSY;
 391         }
 392         frm = get_frame(ctx, f->type);
 393         if (IS_ERR(frm))
 394                 return PTR_ERR(frm);
 395         fmt = find_fmt(f);
 396         if (!fmt)
 397                 return -EINVAL;
 398         frm->width      = f->fmt.pix.width;
 399         frm->height     = f->fmt.pix.height;
 400         frm->size       = f->fmt.pix.sizeimage;
 401         /* Reset crop settings */
 402         frm->o_width    = 0;
 403         frm->o_height   = 0;
 404         frm->c_width    = frm->width;
 405         frm->c_height   = frm->height;
 406         frm->right      = frm->width;
 407         frm->bottom     = frm->height;
 408         frm->fmt        = fmt;
 409         frm->stride     = f->fmt.pix.bytesperline;
 410         return 0;
 411 }
 412
 413 static unsigned int g2d_poll(struct file *file, struct poll_table_struct *wait)
 414 {
 415         struct g2d_ctx *ctx = fh2ctx(file->private_data);
 416         struct g2d_dev *dev = ctx->dev;
 417         unsigned int res;
 418
 419         mutex_lock(&dev->mutex);
 420         res = v4l2_m2m_poll(file, ctx->m2m_ctx, wait);
 421         mutex_unlock(&dev->mutex);
 422         return res;
 423 }
 424
 425 static int g2d_mmap(struct file *file, struct vm_area_struct *vma)
 426 {
 427         struct g2d_ctx *ctx = fh2ctx(file->private_data);
 428         struct g2d_dev *dev = ctx->dev;
 429         int ret;
 430
 431         if (mutex_lock_interruptible(&dev->mutex))
 432                 return -ERESTARTSYS;
 433         ret = v4l2_m2m_mmap(file, ctx->m2m_ctx, vma);
 434         mutex_unlock(&dev->mutex);
 435         return ret;
 436 }
 437
 438 static int vidioc_reqbufs(struct file *file, void *priv,
 439                         struct v4l2_requestbuffers *reqbufs)
 440 {
 441         struct g2d_ctx *ctx = priv;
 442         return v4l2_m2m_reqbufs(file, ctx->m2m_ctx, reqbufs);
 443 }
 444
 445 static int vidioc_querybuf(struct file *file, void *priv,
 446                         struct v4l2_buffer *buf)
 447 {
 448         struct g2d_ctx *ctx = priv;
 449         return v4l2_m2m_querybuf(file, ctx->m2m_ctx, buf);
 450 }
 451
 452 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
 453 {
 454         struct g2d_ctx *ctx = priv;
 455         return v4l2_m2m_qbuf(file, ctx->m2m_ctx, buf);
 456 }
 457
 458 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
 459 {
 460         struct g2d_ctx *ctx = priv;
 461         return v4l2_m2m_dqbuf(file, ctx->m2m_ctx, buf);
 462 }
 463
 464
 465 static int vidioc_streamon(struct file *file, void *priv,
 466                                         enum v4l2_buf_type type)
 467 {
 468         struct g2d_ctx *ctx = priv;
 469         return v4l2_m2m_streamon(file, ctx->m2m_ctx, type);
 470 }
 471
 472 static int vidioc_streamoff(struct file *file, void *priv,
 473                                         enum v4l2_buf_type type)
 474 {
 475         struct g2d_ctx *ctx = priv;
 476         return v4l2_m2m_streamoff(file, ctx->m2m_ctx, type);
 477 }
 478
 479 static int vidioc_cropcap(struct file *file, void *priv,
 480                                         struct v4l2_cropcap *cr)
 481 {
 482         struct g2d_ctx *ctx = priv;
 483         struct g2d_frame *f;
 484
 485         f = get_frame(ctx, cr->type);
 486         if (IS_ERR(f))
 487                 return PTR_ERR(f);
 488
 489         cr->bounds.left         = 0;
 490         cr->bounds.top          = 0;
 491         cr->bounds.width        = f->width;
 492         cr->bounds.height       = f->height;
 493         cr->defrect             = cr->bounds;
 494         return 0;
 495 }
 496
 497 static int vidioc_g_crop(struct file *file, void *prv, struct v4l2_crop *cr)
 498 {
 499         struct g2d_ctx *ctx = prv;
 500         struct g2d_frame *f;
 501
 502         f = get_frame(ctx, cr->type);
 503         if (IS_ERR(f))
 504                 return PTR_ERR(f);
 505
 506         cr->c.left      = f->o_height;
 507         cr->c.top       = f->o_width;
 508         cr->c.width     = f->c_width;
 509         cr->c.height    = f->c_height;
 510         return 0;
 511 }
 512
 513 static int vidioc_try_crop(struct file *file, void *prv, const struct v4l2_crop *cr)
 514 {
 515         struct g2d_ctx *ctx = prv;
 516         struct g2d_dev *dev = ctx->dev;
 517         struct g2d_frame *f;
 518
 519         f = get_frame(ctx, cr->type);
 520         if (IS_ERR(f))
 521                 return PTR_ERR(f);
 522
 523         if (cr->c.top < 0 || cr->c.left < 0) {
 524                 v4l2_err(&dev->v4l2_dev,
 525                         "doesn't support negative values for top & left\n");
 526                 return -EINVAL;
 527         }
 528
 529         return 0;
 530 }
 531
 532 static int vidioc_s_crop(struct file *file, void *prv, const struct v4l2_crop *cr)
 533 {
 534         struct g2d_ctx *ctx = prv;
 535         struct g2d_frame *f;
 536         int ret;
 537
 538         ret = vidioc_try_crop(file, prv, cr);
 539         if (ret)
 540                 return ret;
 541         f = get_frame(ctx, cr->type);
 542         if (IS_ERR(f))
 543                 return PTR_ERR(f);
 544
 545         f->c_width      = cr->c.width;
 546         f->c_height     = cr->c.height;
 547         f->o_width      = cr->c.left;
 548         f->o_height     = cr->c.top;
 549         f->bottom       = f->o_height + f->c_height;
 550         f->right        = f->o_width + f->c_width;
 551         return 0;
 552 }
 553
 554 static void g2d_lock(void *prv)
 555 {
 556         struct g2d_ctx *ctx = prv;
 557         struct g2d_dev *dev = ctx->dev;
 558         mutex_lock(&dev->mutex);
 559 }
 560
 561 static void g2d_unlock(void *prv)
 562 {
 563         struct g2d_ctx *ctx = prv;
 564         struct g2d_dev *dev = ctx->dev;
 565         mutex_unlock(&dev->mutex);
 566 }
 567
 568 static void job_abort(void *prv)
 569 {
 570         struct g2d_ctx *ctx = prv;
 571         struct g2d_dev *dev = ctx->dev;
 572         int ret;
 573
 574         if (dev->curr == NULL) /* No job currently running */
 575                 return;
 576
 577         ret = wait_event_timeout(dev->irq_queue,
 578                 dev->curr == NULL,
 579                 msecs_to_jiffies(G2D_TIMEOUT));
 580 }
 581
 582 static void device_run(void *prv)
 583 {
 584         struct g2d_ctx *ctx = prv;
 585         struct g2d_dev *dev = ctx->dev;
 586         struct vb2_buffer *src, *dst;
 587         unsigned long flags;
 588         u32 cmd = 0;
 589
 590         dev->curr = ctx;
 591
 592         src = v4l2_m2m_next_src_buf(ctx->m2m_ctx);
 593         dst = v4l2_m2m_next_dst_buf(ctx->m2m_ctx);
 594
 595         clk_enable(dev->gate);
 596         g2d_reset(dev);
 597
 598         spin_lock_irqsave(&dev->ctrl_lock, flags);
 599
 600         g2d_set_src_size(dev, &ctx->in);
 601         g2d_set_src_addr(dev, vb2_dma_contig_plane_dma_addr(src, 0));
 602
 603         g2d_set_dst_size(dev, &ctx->out);
 604         g2d_set_dst_addr(dev, vb2_dma_contig_plane_dma_addr(dst, 0));
 605
 606         g2d_set_rop4(dev, ctx->rop);
 607         g2d_set_flip(dev, ctx->flip);
 608
 609         if (ctx->in.c_width != ctx->out.c_width ||
 610                 ctx->in.c_height != ctx->out.c_height) {
 611                 if (dev->variant->hw_rev == TYPE_G2D_3X)
 612                         cmd |= CMD_V3_ENABLE_STRETCH;
 613                 else
 614                         g2d_set_v41_stretch(dev, &ctx->in, &ctx->out);
 615         }
 616
 617         g2d_set_cmd(dev, cmd);
 618         g2d_start(dev);
 619
 620         spin_unlock_irqrestore(&dev->ctrl_lock, flags);
 621 }
 622
 623 static irqreturn_t g2d_isr(int irq, void *prv)
 624 {
 625         struct g2d_dev *dev = prv;
 626         struct g2d_ctx *ctx = dev->curr;
 627         struct vb2_buffer *src, *dst;
 628
 629         g2d_clear_int(dev);
 630         clk_disable(dev->gate);
 631
 632         BUG_ON(ctx == NULL);
 633
 634         src = v4l2_m2m_src_buf_remove(ctx->m2m_ctx);
 635         dst = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx);
 636
 637         BUG_ON(src == NULL);
 638         BUG_ON(dst == NULL);
 639
 640         dst->v4l2_buf.timecode = src->v4l2_buf.timecode;
 641         dst->v4l2_buf.timestamp = src->v4l2_buf.timestamp;
 642
 643         v4l2_m2m_buf_done(src, VB2_BUF_STATE_DONE);
 644         v4l2_m2m_buf_done(dst, VB2_BUF_STATE_DONE);
 645         v4l2_m2m_job_finish(dev->m2m_dev, ctx->m2m_ctx);
 646
 647         dev->curr = NULL;
 648         wake_up(&dev->irq_queue);
 649         return IRQ_HANDLED;
 650 }
 651
 652 static const struct v4l2_file_operations g2d_fops = {
 653         .owner          = THIS_MODULE,
 654         .open           = g2d_open,
 655         .release        = g2d_release,
 656         .poll           = g2d_poll,
 657         .unlocked_ioctl = video_ioctl2,
 658         .mmap           = g2d_mmap,
 659 };
 660
 661 static const struct v4l2_ioctl_ops g2d_ioctl_ops = {
 662         .vidioc_querycap        = vidioc_querycap,
 663
 664         .vidioc_enum_fmt_vid_cap        = vidioc_enum_fmt,
 665         .vidioc_g_fmt_vid_cap           = vidioc_g_fmt,
 666         .vidioc_try_fmt_vid_cap         = vidioc_try_fmt,
 667         .vidioc_s_fmt_vid_cap           = vidioc_s_fmt,
 668
 669         .vidioc_enum_fmt_vid_out        = vidioc_enum_fmt,
 670         .vidioc_g_fmt_vid_out           = vidioc_g_fmt,
 671         .vidioc_try_fmt_vid_out         = vidioc_try_fmt,
 672         .vidioc_s_fmt_vid_out           = vidioc_s_fmt,
 673
 674         .vidioc_reqbufs                 = vidioc_reqbufs,
 675         .vidioc_querybuf                = vidioc_querybuf,
 676
 677         .vidioc_qbuf                    = vidioc_qbuf,
 678         .vidioc_dqbuf                   = vidioc_dqbuf,
 679
 680         .vidioc_streamon                = vidioc_streamon,
 681         .vidioc_streamoff               = vidioc_streamoff,
 682
 683         .vidioc_g_crop                  = vidioc_g_crop,
 684         .vidioc_s_crop                  = vidioc_s_crop,
 685         .vidioc_cropcap                 = vidioc_cropcap,
 686 };
 687
 688 static struct video_device g2d_videodev = {
 689         .name           = G2D_NAME,
 690         .fops           = &g2d_fops,
 691         .ioctl_ops      = &g2d_ioctl_ops,
 692         .minor          = -1,
 693         .release        = video_device_release,
 694         .vfl_dir        = VFL_DIR_M2M,
 695 };
 696
 697 static struct v4l2_m2m_ops g2d_m2m_ops = {
 698         .device_run     = device_run,
 699         .job_abort      = job_abort,
 700         .lock           = g2d_lock,
 701         .unlock         = g2d_unlock,
 702 };
 703
 704 static const struct of_device_id exynos_g2d_match[];
 705
 706 static int g2d_probe(struct platform_device *pdev)
 707 {
 708         struct g2d_dev *dev;
 709         struct video_device *vfd;
 710         struct resource *res;
 711         const struct of_device_id *of_id;
 712         int ret = 0;
 713
 714         dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
 715         if (!dev)
 716                 return -ENOMEM;
 717
 718         spin_lock_init(&dev->ctrl_lock);
 719         mutex_init(&dev->mutex);
 720         atomic_set(&dev->num_inst, 0);
 721         init_waitqueue_head(&dev->irq_queue);
 722
 723         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 724
 725         dev->regs = devm_ioremap_resource(&pdev->dev, res);
 726         if (IS_ERR(dev->regs))
 727                 return PTR_ERR(dev->regs);
 728
 729         dev->clk = clk_get(&pdev->dev, "sclk_fimg2d");
 730         if (IS_ERR(dev->clk)) {
 731                 dev_err(&pdev->dev, "failed to get g2d clock\n");
 732                 return -ENXIO;
 733         }
 734
 735         ret = clk_prepare(dev->clk);
 736         if (ret) {
 737                 dev_err(&pdev->dev, "failed to prepare g2d clock\n");
 738                 goto put_clk;
 739         }
 740
 741         dev->gate = clk_get(&pdev->dev, "fimg2d");
 742         if (IS_ERR(dev->gate)) {
 743                 dev_err(&pdev->dev, "failed to get g2d clock gate\n");
 744                 ret = -ENXIO;
 745                 goto unprep_clk;
 746         }
 747
 748         ret = clk_prepare(dev->gate);
 749         if (ret) {
 750                 dev_err(&pdev->dev, "failed to prepare g2d clock gate\n");
 751                 goto put_clk_gate;
 752         }
 753
 754         res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
 755         if (!res) {
 756                 dev_err(&pdev->dev, "failed to find IRQ\n");
 757                 ret = -ENXIO;
 758                 goto unprep_clk_gate;
 759         }
 760
 761         dev->irq = res->start;
 762
 763         ret = devm_request_irq(&pdev->dev, dev->irq, g2d_isr,
 764                                                 0, pdev->name, dev);
 765         if (ret) {
 766                 dev_err(&pdev->dev, "failed to install IRQ\n");
 767                 goto put_clk_gate;
 768         }
 769
 770         dev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
 771         if (IS_ERR(dev->alloc_ctx)) {
 772                 ret = PTR_ERR(dev->alloc_ctx);
 773                 goto unprep_clk_gate;
 774         }
 775
 776         ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
 777         if (ret)
 778                 goto alloc_ctx_cleanup;
 779         vfd = video_device_alloc();
 780         if (!vfd) {
 781                 v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n");
 782                 ret = -ENOMEM;
 783                 goto unreg_v4l2_dev;
 784         }
 785         *vfd = g2d_videodev;
 786         vfd->lock = &dev->mutex;
 787         ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0);
 788         if (ret) {
 789                 v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
 790                 goto rel_vdev;
 791         }
 792         video_set_drvdata(vfd, dev);
 793         snprintf(vfd->name, sizeof(vfd->name), "%s", g2d_videodev.name);
 794         dev->vfd = vfd;
 795         v4l2_info(&dev->v4l2_dev, "device registered as /dev/video%d\n",
 796                                                                 vfd->num);
 797         platform_set_drvdata(pdev, dev);
 798         dev->m2m_dev = v4l2_m2m_init(&g2d_m2m_ops);
 799         if (IS_ERR(dev->m2m_dev)) {
 800                 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n");
 801                 ret = PTR_ERR(dev->m2m_dev);
 802                 goto unreg_video_dev;
 803         }
 804
 805         def_frame.stride = (def_frame.width * def_frame.fmt->depth) >> 3;
 806
 807         if (!pdev->dev.of_node) {
 808                 dev->variant = g2d_get_drv_data(pdev);
 809         } else {
 810                 of_id = of_match_node(exynos_g2d_match, pdev->dev.of_node);
 811                 if (!of_id) {
 812                         ret = -ENODEV;
 813                         goto unreg_video_dev;
 814                 }
 815                 dev->variant = (struct g2d_variant *)of_id->data;
 816         }
 817
 818         return 0;
 819
 820 unreg_video_dev:
 821         video_unregister_device(dev->vfd);
 822 rel_vdev:
 823         video_device_release(vfd);
 824 unreg_v4l2_dev:
 825         v4l2_device_unregister(&dev->v4l2_dev);
 826 alloc_ctx_cleanup:
 827         vb2_dma_contig_cleanup_ctx(dev->alloc_ctx);
 828 unprep_clk_gate:
 829         clk_unprepare(dev->gate);
 830 put_clk_gate:
 831         clk_put(dev->gate);
 832 unprep_clk:
 833         clk_unprepare(dev->clk);
 834 put_clk:
 835         clk_put(dev->clk);
 836
 837         return ret;
 838 }
 839
 840 static int g2d_remove(struct platform_device *pdev)
 841 {
 842         struct g2d_dev *dev = (struct g2d_dev *)platform_get_drvdata(pdev);
 843
 844         v4l2_info(&dev->v4l2_dev, "Removing " G2D_NAME);
 845         v4l2_m2m_release(dev->m2m_dev);
 846         video_unregister_device(dev->vfd);
 847         v4l2_device_unregister(&dev->v4l2_dev);
 848         vb2_dma_contig_cleanup_ctx(dev->alloc_ctx);
 849         clk_unprepare(dev->gate);
 850         clk_put(dev->gate);
 851         clk_unprepare(dev->clk);
 852         clk_put(dev->clk);
 853         return 0;
 854 }
 855
 856 static struct g2d_variant g2d_drvdata_v3x = {
 857         .hw_rev = TYPE_G2D_3X, /* Revision 3.0 for S5PV210 and Exynos4210 */
 858 };
 859
 860 static struct g2d_variant g2d_drvdata_v4x = {
 861         .hw_rev = TYPE_G2D_4X, /* Revision 4.1 for Exynos4X12 and Exynos5 */
 862 };
 863
 864 static const struct of_device_id exynos_g2d_match[] = {
 865         {
 866                 .compatible = "samsung,s5pv210-g2d",
 867                 .data = &g2d_drvdata_v3x,
 868         }, {
 869                 .compatible = "samsung,exynos4212-g2d",
 870                 .data = &g2d_drvdata_v4x,
 871         },
 872         {},
 873 };
 874 MODULE_DEVICE_TABLE(of, exynos_g2d_match);
 875
 876 static struct platform_device_id g2d_driver_ids[] = {
 877         {
 878                 .name = "s5p-g2d",
 879                 .driver_data = (unsigned long)&g2d_drvdata_v3x,
 880         }, {
 881                 .name = "s5p-g2d-v4x",
 882                 .driver_data = (unsigned long)&g2d_drvdata_v4x,
 883         },
 884         {},
 885 };
 886 MODULE_DEVICE_TABLE(platform, g2d_driver_ids);
 887
 888 static struct platform_driver g2d_pdrv = {
 889         .probe          = g2d_probe,
 890         .remove         = g2d_remove,
 891         .id_table       = g2d_driver_ids,
 892         .driver         = {
 893                 .name = G2D_NAME,
 894                 .owner = THIS_MODULE,
 895                 .of_match_table = exynos_g2d_match,
 896         },
 897 };
 898
 899 module_platform_driver(g2d_pdrv);
 900
 901 MODULE_AUTHOR("Kamil Debski <k.debski@samsung.com>");
 902 MODULE_DESCRIPTION("S5P G2D 2d graphics accelerator driver");
 903 MODULE_LICENSE("GPL");