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-v4l2.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,
 105                            unsigned int *nbuffers, unsigned int *nplanes,
 106                            unsigned int sizes[], struct device *alloc_devs[])
 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
 117         if (*nbuffers == 0)
 118                 *nbuffers = 1;
 119
 120         return 0;
 121 }
 122
 123 static int g2d_buf_prepare(struct vb2_buffer *vb)
 124 {
 125         struct g2d_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
 126         struct g2d_frame *f = get_frame(ctx, vb->vb2_queue->type);
 127
 128         if (IS_ERR(f))
 129                 return PTR_ERR(f);
 130         vb2_set_plane_payload(vb, 0, f->size);
 131         return 0;
 132 }
 133
 134 static void g2d_buf_queue(struct vb2_buffer *vb)
 135 {
 136         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 137         struct g2d_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
 138         v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
 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         src_vq->dev = ctx->dev->v4l2_dev.dev;
 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_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
 174         dst_vq->lock = &ctx->dev->mutex;
 175         dst_vq->dev = ctx->dev->v4l2_dev.dev;
 176
 177         return vb2_queue_init(dst_vq);
 178 }
 179
 180 static int g2d_s_ctrl(struct v4l2_ctrl *ctrl)
 181 {
 182         struct g2d_ctx *ctx = container_of(ctrl->handler, struct g2d_ctx,
 183                                                                 ctrl_handler);
 184         unsigned long flags;
 185
 186         spin_lock_irqsave(&ctx->dev->ctrl_lock, flags);
 187         switch (ctrl->id) {
 188         case V4L2_CID_COLORFX:
 189                 if (ctrl->val == V4L2_COLORFX_NEGATIVE)
 190                         ctx->rop = ROP4_INVERT;
 191                 else
 192                         ctx->rop = ROP4_COPY;
 193                 break;
 194
 195         case V4L2_CID_HFLIP:
 196                 ctx->flip = ctx->ctrl_hflip->val | (ctx->ctrl_vflip->val << 1);
 197                 break;
 198
 199         }
 200         spin_unlock_irqrestore(&ctx->dev->ctrl_lock, flags);
 201         return 0;
 202 }
 203
 204 static const struct v4l2_ctrl_ops g2d_ctrl_ops = {
 205         .s_ctrl         = g2d_s_ctrl,
 206 };
 207
 208 static int g2d_setup_ctrls(struct g2d_ctx *ctx)
 209 {
 210         struct g2d_dev *dev = ctx->dev;
 211
 212         v4l2_ctrl_handler_init(&ctx->ctrl_handler, 3);
 213
 214         ctx->ctrl_hflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, &g2d_ctrl_ops,
 215                                                 V4L2_CID_HFLIP, 0, 1, 1, 0);
 216
 217         ctx->ctrl_vflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, &g2d_ctrl_ops,
 218                                                 V4L2_CID_VFLIP, 0, 1, 1, 0);
 219
 220         v4l2_ctrl_new_std_menu(
 221                 &ctx->ctrl_handler,
 222                 &g2d_ctrl_ops,
 223                 V4L2_CID_COLORFX,
 224                 V4L2_COLORFX_NEGATIVE,
 225                 ~((1 << V4L2_COLORFX_NONE) | (1 << V4L2_COLORFX_NEGATIVE)),
 226                 V4L2_COLORFX_NONE);
 227
 228         if (ctx->ctrl_handler.error) {
 229                 int err = ctx->ctrl_handler.error;
 230                 v4l2_err(&dev->v4l2_dev, "g2d_setup_ctrls failed\n");
 231                 v4l2_ctrl_handler_free(&ctx->ctrl_handler);
 232                 return err;
 233         }
 234
 235         v4l2_ctrl_cluster(2, &ctx->ctrl_hflip);
 236
 237         return 0;
 238 }
 239
 240 static int g2d_open(struct file *file)
 241 {
 242         struct g2d_dev *dev = video_drvdata(file);
 243         struct g2d_ctx *ctx = NULL;
 244         int ret = 0;
 245
 246         ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
 247         if (!ctx)
 248                 return -ENOMEM;
 249         ctx->dev = dev;
 250         /* Set default formats */
 251         ctx->in         = def_frame;
 252         ctx->out        = def_frame;
 253
 254         if (mutex_lock_interruptible(&dev->mutex)) {
 255                 kfree(ctx);
 256                 return -ERESTARTSYS;
 257         }
 258         ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx, &queue_init);
 259         if (IS_ERR(ctx->fh.m2m_ctx)) {
 260                 ret = PTR_ERR(ctx->fh.m2m_ctx);
 261                 mutex_unlock(&dev->mutex);
 262                 kfree(ctx);
 263                 return ret;
 264         }
 265         v4l2_fh_init(&ctx->fh, video_devdata(file));
 266         file->private_data = &ctx->fh;
 267         v4l2_fh_add(&ctx->fh);
 268
 269         g2d_setup_ctrls(ctx);
 270
 271         /* Write the default values to the ctx struct */
 272         v4l2_ctrl_handler_setup(&ctx->ctrl_handler);
 273
 274         ctx->fh.ctrl_handler = &ctx->ctrl_handler;
 275         mutex_unlock(&dev->mutex);
 276
 277         v4l2_info(&dev->v4l2_dev, "instance opened\n");
 278         return 0;
 279 }
 280
 281 static int g2d_release(struct file *file)
 282 {
 283         struct g2d_dev *dev = video_drvdata(file);
 284         struct g2d_ctx *ctx = fh2ctx(file->private_data);
 285
 286         v4l2_ctrl_handler_free(&ctx->ctrl_handler);
 287         v4l2_fh_del(&ctx->fh);
 288         v4l2_fh_exit(&ctx->fh);
 289         kfree(ctx);
 290         v4l2_info(&dev->v4l2_dev, "instance closed\n");
 291         return 0;
 292 }
 293
 294
 295 static int vidioc_querycap(struct file *file, void *priv,
 296                                 struct v4l2_capability *cap)
 297 {
 298         strncpy(cap->driver, G2D_NAME, sizeof(cap->driver) - 1);
 299         strncpy(cap->card, G2D_NAME, sizeof(cap->card) - 1);
 300         cap->bus_info[0] = 0;
 301         cap->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
 302         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
 303         return 0;
 304 }
 305
 306 static int vidioc_enum_fmt(struct file *file, void *prv, struct v4l2_fmtdesc *f)
 307 {
 308         struct g2d_fmt *fmt;
 309         if (f->index >= NUM_FORMATS)
 310                 return -EINVAL;
 311         fmt = &formats[f->index];
 312         f->pixelformat = fmt->fourcc;
 313         strncpy(f->description, fmt->name, sizeof(f->description) - 1);
 314         return 0;
 315 }
 316
 317 static int vidioc_g_fmt(struct file *file, void *prv, struct v4l2_format *f)
 318 {
 319         struct g2d_ctx *ctx = prv;
 320         struct vb2_queue *vq;
 321         struct g2d_frame *frm;
 322
 323         vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
 324         if (!vq)
 325                 return -EINVAL;
 326         frm = get_frame(ctx, f->type);
 327         if (IS_ERR(frm))
 328                 return PTR_ERR(frm);
 329
 330         f->fmt.pix.width                = frm->width;
 331         f->fmt.pix.height               = frm->height;
 332         f->fmt.pix.field                = V4L2_FIELD_NONE;
 333         f->fmt.pix.pixelformat          = frm->fmt->fourcc;
 334         f->fmt.pix.bytesperline         = (frm->width * frm->fmt->depth) >> 3;
 335         f->fmt.pix.sizeimage            = frm->size;
 336         return 0;
 337 }
 338
 339 static int vidioc_try_fmt(struct file *file, void *prv, struct v4l2_format *f)
 340 {
 341         struct g2d_fmt *fmt;
 342         enum v4l2_field *field;
 343
 344         fmt = find_fmt(f);
 345         if (!fmt)
 346                 return -EINVAL;
 347
 348         field = &f->fmt.pix.field;
 349         if (*field == V4L2_FIELD_ANY)
 350                 *field = V4L2_FIELD_NONE;
 351         else if (*field != V4L2_FIELD_NONE)
 352                 return -EINVAL;
 353
 354         if (f->fmt.pix.width > MAX_WIDTH)
 355                 f->fmt.pix.width = MAX_WIDTH;
 356         if (f->fmt.pix.height > MAX_HEIGHT)
 357                 f->fmt.pix.height = MAX_HEIGHT;
 358
 359         if (f->fmt.pix.width < 1)
 360                 f->fmt.pix.width = 1;
 361         if (f->fmt.pix.height < 1)
 362                 f->fmt.pix.height = 1;
 363
 364         f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
 365         f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
 366         return 0;
 367 }
 368
 369 static int vidioc_s_fmt(struct file *file, void *prv, struct v4l2_format *f)
 370 {
 371         struct g2d_ctx *ctx = prv;
 372         struct g2d_dev *dev = ctx->dev;
 373         struct vb2_queue *vq;
 374         struct g2d_frame *frm;
 375         struct g2d_fmt *fmt;
 376         int ret = 0;
 377
 378         /* Adjust all values accordingly to the hardware capabilities
 379          * and chosen format. */
 380         ret = vidioc_try_fmt(file, prv, f);
 381         if (ret)
 382                 return ret;
 383         vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
 384         if (vb2_is_busy(vq)) {
 385                 v4l2_err(&dev->v4l2_dev, "queue (%d) bust\n", f->type);
 386                 return -EBUSY;
 387         }
 388         frm = get_frame(ctx, f->type);
 389         if (IS_ERR(frm))
 390                 return PTR_ERR(frm);
 391         fmt = find_fmt(f);
 392         if (!fmt)
 393                 return -EINVAL;
 394         frm->width      = f->fmt.pix.width;
 395         frm->height     = f->fmt.pix.height;
 396         frm->size       = f->fmt.pix.sizeimage;
 397         /* Reset crop settings */
 398         frm->o_width    = 0;
 399         frm->o_height   = 0;
 400         frm->c_width    = frm->width;
 401         frm->c_height   = frm->height;
 402         frm->right      = frm->width;
 403         frm->bottom     = frm->height;
 404         frm->fmt        = fmt;
 405         frm->stride     = f->fmt.pix.bytesperline;
 406         return 0;
 407 }
 408
 409 static int vidioc_cropcap(struct file *file, void *priv,
 410                                         struct v4l2_cropcap *cr)
 411 {
 412         struct g2d_ctx *ctx = priv;
 413         struct g2d_frame *f;
 414
 415         f = get_frame(ctx, cr->type);
 416         if (IS_ERR(f))
 417                 return PTR_ERR(f);
 418
 419         cr->bounds.left         = 0;
 420         cr->bounds.top          = 0;
 421         cr->bounds.width        = f->width;
 422         cr->bounds.height       = f->height;
 423         cr->defrect             = cr->bounds;
 424         return 0;
 425 }
 426
 427 static int vidioc_g_crop(struct file *file, void *prv, struct v4l2_crop *cr)
 428 {
 429         struct g2d_ctx *ctx = prv;
 430         struct g2d_frame *f;
 431
 432         f = get_frame(ctx, cr->type);
 433         if (IS_ERR(f))
 434                 return PTR_ERR(f);
 435
 436         cr->c.left      = f->o_height;
 437         cr->c.top       = f->o_width;
 438         cr->c.width     = f->c_width;
 439         cr->c.height    = f->c_height;
 440         return 0;
 441 }
 442
 443 static int vidioc_try_crop(struct file *file, void *prv, const struct v4l2_crop *cr)
 444 {
 445         struct g2d_ctx *ctx = prv;
 446         struct g2d_dev *dev = ctx->dev;
 447         struct g2d_frame *f;
 448
 449         f = get_frame(ctx, cr->type);
 450         if (IS_ERR(f))
 451                 return PTR_ERR(f);
 452
 453         if (cr->c.top < 0 || cr->c.left < 0) {
 454                 v4l2_err(&dev->v4l2_dev,
 455                         "doesn't support negative values for top & left\n");
 456                 return -EINVAL;
 457         }
 458
 459         return 0;
 460 }
 461
 462 static int vidioc_s_crop(struct file *file, void *prv, const struct v4l2_crop *cr)
 463 {
 464         struct g2d_ctx *ctx = prv;
 465         struct g2d_frame *f;
 466         int ret;
 467
 468         ret = vidioc_try_crop(file, prv, cr);
 469         if (ret)
 470                 return ret;
 471         f = get_frame(ctx, cr->type);
 472         if (IS_ERR(f))
 473                 return PTR_ERR(f);
 474
 475         f->c_width      = cr->c.width;
 476         f->c_height     = cr->c.height;
 477         f->o_width      = cr->c.left;
 478         f->o_height     = cr->c.top;
 479         f->bottom       = f->o_height + f->c_height;
 480         f->right        = f->o_width + f->c_width;
 481         return 0;
 482 }
 483
 484 static void job_abort(void *prv)
 485 {
 486         struct g2d_ctx *ctx = prv;
 487         struct g2d_dev *dev = ctx->dev;
 488
 489         if (dev->curr == NULL) /* No job currently running */
 490                 return;
 491
 492         wait_event_timeout(dev->irq_queue,
 493                            dev->curr == NULL,
 494                            msecs_to_jiffies(G2D_TIMEOUT));
 495 }
 496
 497 static void device_run(void *prv)
 498 {
 499         struct g2d_ctx *ctx = prv;
 500         struct g2d_dev *dev = ctx->dev;
 501         struct vb2_buffer *src, *dst;
 502         unsigned long flags;
 503         u32 cmd = 0;
 504
 505         dev->curr = ctx;
 506
 507         src = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
 508         dst = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
 509
 510         clk_enable(dev->gate);
 511         g2d_reset(dev);
 512
 513         spin_lock_irqsave(&dev->ctrl_lock, flags);
 514
 515         g2d_set_src_size(dev, &ctx->in);
 516         g2d_set_src_addr(dev, vb2_dma_contig_plane_dma_addr(src, 0));
 517
 518         g2d_set_dst_size(dev, &ctx->out);
 519         g2d_set_dst_addr(dev, vb2_dma_contig_plane_dma_addr(dst, 0));
 520
 521         g2d_set_rop4(dev, ctx->rop);
 522         g2d_set_flip(dev, ctx->flip);
 523
 524         if (ctx->in.c_width != ctx->out.c_width ||
 525                 ctx->in.c_height != ctx->out.c_height) {
 526                 if (dev->variant->hw_rev == TYPE_G2D_3X)
 527                         cmd |= CMD_V3_ENABLE_STRETCH;
 528                 else
 529                         g2d_set_v41_stretch(dev, &ctx->in, &ctx->out);
 530         }
 531
 532         g2d_set_cmd(dev, cmd);
 533         g2d_start(dev);
 534
 535         spin_unlock_irqrestore(&dev->ctrl_lock, flags);
 536 }
 537
 538 static irqreturn_t g2d_isr(int irq, void *prv)
 539 {
 540         struct g2d_dev *dev = prv;
 541         struct g2d_ctx *ctx = dev->curr;
 542         struct vb2_v4l2_buffer *src, *dst;
 543
 544         g2d_clear_int(dev);
 545         clk_disable(dev->gate);
 546
 547         BUG_ON(ctx == NULL);
 548
 549         src = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
 550         dst = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
 551
 552         BUG_ON(src == NULL);
 553         BUG_ON(dst == NULL);
 554
 555         dst->timecode = src->timecode;
 556         dst->vb2_buf.timestamp = src->vb2_buf.timestamp;
 557         dst->flags &= ~V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
 558         dst->flags |=
 559                 src->flags & V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
 560
 561         v4l2_m2m_buf_done(src, VB2_BUF_STATE_DONE);
 562         v4l2_m2m_buf_done(dst, VB2_BUF_STATE_DONE);
 563         v4l2_m2m_job_finish(dev->m2m_dev, ctx->fh.m2m_ctx);
 564
 565         dev->curr = NULL;
 566         wake_up(&dev->irq_queue);
 567         return IRQ_HANDLED;
 568 }
 569
 570 static const struct v4l2_file_operations g2d_fops = {
 571         .owner          = THIS_MODULE,
 572         .open           = g2d_open,
 573         .release        = g2d_release,
 574         .poll           = v4l2_m2m_fop_poll,
 575         .unlocked_ioctl = video_ioctl2,
 576         .mmap           = v4l2_m2m_fop_mmap,
 577 };
 578
 579 static const struct v4l2_ioctl_ops g2d_ioctl_ops = {
 580         .vidioc_querycap        = vidioc_querycap,
 581
 582         .vidioc_enum_fmt_vid_cap        = vidioc_enum_fmt,
 583         .vidioc_g_fmt_vid_cap           = vidioc_g_fmt,
 584         .vidioc_try_fmt_vid_cap         = vidioc_try_fmt,
 585         .vidioc_s_fmt_vid_cap           = vidioc_s_fmt,
 586
 587         .vidioc_enum_fmt_vid_out        = vidioc_enum_fmt,
 588         .vidioc_g_fmt_vid_out           = vidioc_g_fmt,
 589         .vidioc_try_fmt_vid_out         = vidioc_try_fmt,
 590         .vidioc_s_fmt_vid_out           = vidioc_s_fmt,
 591
 592         .vidioc_reqbufs                 = v4l2_m2m_ioctl_reqbufs,
 593         .vidioc_querybuf                = v4l2_m2m_ioctl_querybuf,
 594         .vidioc_qbuf                    = v4l2_m2m_ioctl_qbuf,
 595         .vidioc_dqbuf                   = v4l2_m2m_ioctl_dqbuf,
 596
 597         .vidioc_streamon                = v4l2_m2m_ioctl_streamon,
 598         .vidioc_streamoff               = v4l2_m2m_ioctl_streamoff,
 599
 600         .vidioc_g_crop                  = vidioc_g_crop,
 601         .vidioc_s_crop                  = vidioc_s_crop,
 602         .vidioc_cropcap                 = vidioc_cropcap,
 603 };
 604
 605 static struct video_device g2d_videodev = {
 606         .name           = G2D_NAME,
 607         .fops           = &g2d_fops,
 608         .ioctl_ops      = &g2d_ioctl_ops,
 609         .minor          = -1,
 610         .release        = video_device_release,
 611         .vfl_dir        = VFL_DIR_M2M,
 612 };
 613
 614 static struct v4l2_m2m_ops g2d_m2m_ops = {
 615         .device_run     = device_run,
 616         .job_abort      = job_abort,
 617 };
 618
 619 static const struct of_device_id exynos_g2d_match[];
 620
 621 static int g2d_probe(struct platform_device *pdev)
 622 {
 623         struct g2d_dev *dev;
 624         struct video_device *vfd;
 625         struct resource *res;
 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         init_waitqueue_head(&dev->irq_queue);
 637
 638         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 639
 640         dev->regs = devm_ioremap_resource(&pdev->dev, res);
 641         if (IS_ERR(dev->regs))
 642                 return PTR_ERR(dev->regs);
 643
 644         dev->clk = clk_get(&pdev->dev, "sclk_fimg2d");
 645         if (IS_ERR(dev->clk)) {
 646                 dev_err(&pdev->dev, "failed to get g2d clock\n");
 647                 return -ENXIO;
 648         }
 649
 650         ret = clk_prepare(dev->clk);
 651         if (ret) {
 652                 dev_err(&pdev->dev, "failed to prepare g2d clock\n");
 653                 goto put_clk;
 654         }
 655
 656         dev->gate = clk_get(&pdev->dev, "fimg2d");
 657         if (IS_ERR(dev->gate)) {
 658                 dev_err(&pdev->dev, "failed to get g2d clock gate\n");
 659                 ret = -ENXIO;
 660                 goto unprep_clk;
 661         }
 662
 663         ret = clk_prepare(dev->gate);
 664         if (ret) {
 665                 dev_err(&pdev->dev, "failed to prepare g2d clock gate\n");
 666                 goto put_clk_gate;
 667         }
 668
 669         res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
 670         if (!res) {
 671                 dev_err(&pdev->dev, "failed to find IRQ\n");
 672                 ret = -ENXIO;
 673                 goto unprep_clk_gate;
 674         }
 675
 676         dev->irq = res->start;
 677
 678         ret = devm_request_irq(&pdev->dev, dev->irq, g2d_isr,
 679                                                 0, pdev->name, dev);
 680         if (ret) {
 681                 dev_err(&pdev->dev, "failed to install IRQ\n");
 682                 goto put_clk_gate;
 683         }
 684
 685         vb2_dma_contig_set_max_seg_size(&pdev->dev, DMA_BIT_MASK(32));
 686
 687         ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
 688         if (ret)
 689                 goto unprep_clk_gate;
 690         vfd = video_device_alloc();
 691         if (!vfd) {
 692                 v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n");
 693                 ret = -ENOMEM;
 694                 goto unreg_v4l2_dev;
 695         }
 696         *vfd = g2d_videodev;
 697         vfd->lock = &dev->mutex;
 698         vfd->v4l2_dev = &dev->v4l2_dev;
 699         ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0);
 700         if (ret) {
 701                 v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
 702                 goto rel_vdev;
 703         }
 704         video_set_drvdata(vfd, dev);
 705         snprintf(vfd->name, sizeof(vfd->name), "%s", g2d_videodev.name);
 706         dev->vfd = vfd;
 707         v4l2_info(&dev->v4l2_dev, "device registered as /dev/video%d\n",
 708                                                                 vfd->num);
 709         platform_set_drvdata(pdev, dev);
 710         dev->m2m_dev = v4l2_m2m_init(&g2d_m2m_ops);
 711         if (IS_ERR(dev->m2m_dev)) {
 712                 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n");
 713                 ret = PTR_ERR(dev->m2m_dev);
 714                 goto unreg_video_dev;
 715         }
 716
 717         def_frame.stride = (def_frame.width * def_frame.fmt->depth) >> 3;
 718
 719         of_id = of_match_node(exynos_g2d_match, pdev->dev.of_node);
 720         if (!of_id) {
 721                 ret = -ENODEV;
 722                 goto unreg_video_dev;
 723         }
 724         dev->variant = (struct g2d_variant *)of_id->data;
 725
 726         return 0;
 727
 728 unreg_video_dev:
 729         video_unregister_device(dev->vfd);
 730 rel_vdev:
 731         video_device_release(vfd);
 732 unreg_v4l2_dev:
 733         v4l2_device_unregister(&dev->v4l2_dev);
 734 unprep_clk_gate:
 735         clk_unprepare(dev->gate);
 736 put_clk_gate:
 737         clk_put(dev->gate);
 738 unprep_clk:
 739         clk_unprepare(dev->clk);
 740 put_clk:
 741         clk_put(dev->clk);
 742
 743         return ret;
 744 }
 745
 746 static int g2d_remove(struct platform_device *pdev)
 747 {
 748         struct g2d_dev *dev = platform_get_drvdata(pdev);
 749
 750         v4l2_info(&dev->v4l2_dev, "Removing " G2D_NAME);
 751         v4l2_m2m_release(dev->m2m_dev);
 752         video_unregister_device(dev->vfd);
 753         v4l2_device_unregister(&dev->v4l2_dev);
 754         vb2_dma_contig_clear_max_seg_size(&pdev->dev);
 755         clk_unprepare(dev->gate);
 756         clk_put(dev->gate);
 757         clk_unprepare(dev->clk);
 758         clk_put(dev->clk);
 759         return 0;
 760 }
 761
 762 static struct g2d_variant g2d_drvdata_v3x = {
 763         .hw_rev = TYPE_G2D_3X, /* Revision 3.0 for S5PV210 and Exynos4210 */
 764 };
 765
 766 static struct g2d_variant g2d_drvdata_v4x = {
 767         .hw_rev = TYPE_G2D_4X, /* Revision 4.1 for Exynos4X12 and Exynos5 */
 768 };
 769
 770 static const struct of_device_id exynos_g2d_match[] = {
 771         {
 772                 .compatible = "samsung,s5pv210-g2d",
 773                 .data = &g2d_drvdata_v3x,
 774         }, {
 775                 .compatible = "samsung,exynos4212-g2d",
 776                 .data = &g2d_drvdata_v4x,
 777         },
 778         {},
 779 };
 780 MODULE_DEVICE_TABLE(of, exynos_g2d_match);
 781
 782 static struct platform_driver g2d_pdrv = {
 783         .probe          = g2d_probe,
 784         .remove         = g2d_remove,
 785         .driver         = {
 786                 .name = G2D_NAME,
 787                 .of_match_table = exynos_g2d_match,
 788         },
 789 };
 790
 791 module_platform_driver(g2d_pdrv);
 792
 793 MODULE_AUTHOR("Kamil Debski <k.debski@samsung.com>");
 794 MODULE_DESCRIPTION("S5P G2D 2d graphics accelerator driver");
 795 MODULE_LICENSE("GPL");