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/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
  34 static 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
  68 static 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
  80 static 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
  91 static 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
 104 static 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
 124 static 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
 135 static 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
 141 static 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
 147 static 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
 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->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
 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->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
 300         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
 301         return 0;
 302 }
 303
 304 static 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
 315 static 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
 337 static 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
 367 static 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
 407 static 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
 425 static 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
 441 static 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
 460 static 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
 482 static 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
 495 static 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
 536 static 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
 568 static 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
 577 static 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
 603 static 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
 612 static struct v4l2_m2m_ops g2d_m2m_ops = {
 613         .device_run     = device_run,
 614         .job_abort      = job_abort,
 615 };
 616
 617 static const struct of_device_id exynos_g2d_match[];
 618
 619 static 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
 734 unreg_video_dev:
 735         video_unregister_device(dev->vfd);
 736 rel_vdev:
 737         video_device_release(vfd);
 738 unreg_v4l2_dev:
 739         v4l2_device_unregister(&dev->v4l2_dev);
 740 alloc_ctx_cleanup:
 741         vb2_dma_contig_cleanup_ctx(dev->alloc_ctx);
 742 unprep_clk_gate:
 743         clk_unprepare(dev->gate);
 744 put_clk_gate:
 745         clk_put(dev->gate);
 746 unprep_clk:
 747         clk_unprepare(dev->clk);
 748 put_clk:
 749         clk_put(dev->clk);
 750
 751         return ret;
 752 }
 753
 754 static 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
 770 static struct g2d_variant g2d_drvdata_v3x = {
 771         .hw_rev = TYPE_G2D_3X, /* Revision 3.0 for S5PV210 and Exynos4210 */
 772 };
 773
 774 static struct g2d_variant g2d_drvdata_v4x = {
 775         .hw_rev = TYPE_G2D_4X, /* Revision 4.1 for Exynos4X12 and Exynos5 */
 776 };
 777
 778 static 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 };
 788 MODULE_DEVICE_TABLE(of, exynos_g2d_match);
 789
 790 static const 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 };
 800 MODULE_DEVICE_TABLE(platform, g2d_driver_ids);
 801
 802 static 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
 812 module_platform_driver(g2d_pdrv);
 813
 814 MODULE_AUTHOR("Kamil Debski <k.debski@samsung.com>");
 815 MODULE_DESCRIPTION("S5P G2D 2d graphics accelerator driver");
 816 MODULE_LICENSE("GPL");