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

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