drivers/media/platform/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         .wait_prepare   = vb2_ops_wait_prepare,
 137         .wait_finish    = vb2_ops_wait_finish,
 138 };
 139
 140 static int queue_init(void *priv, struct vb2_queue *src_vq,
 141                                                 struct vb2_queue *dst_vq)
 142 {
 143         struct g2d_ctx *ctx = priv;
 144         int ret;
 145
 146         src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
 147         src_vq->io_modes = VB2_MMAP | VB2_USERPTR;
 148         src_vq->drv_priv = ctx;
 149         src_vq->ops = &g2d_qops;
 150         src_vq->mem_ops = &vb2_dma_contig_memops;
 151         src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
 152         src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
 153         src_vq->lock = &ctx->dev->mutex;
 154         src_vq->dev = ctx->dev->v4l2_dev.dev;
 155
 156         ret = vb2_queue_init(src_vq);
 157         if (ret)
 158                 return ret;
 159
 160         dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 161         dst_vq->io_modes = VB2_MMAP | VB2_USERPTR;
 162         dst_vq->drv_priv = ctx;
 163         dst_vq->ops = &g2d_qops;
 164         dst_vq->mem_ops = &vb2_dma_contig_memops;
 165         dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
 166         dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
 167         dst_vq->lock = &ctx->dev->mutex;
 168         dst_vq->dev = ctx->dev->v4l2_dev.dev;
 169
 170         return vb2_queue_init(dst_vq);
 171 }
 172
 173 static int g2d_s_ctrl(struct v4l2_ctrl *ctrl)
 174 {
 175         struct g2d_ctx *ctx = container_of(ctrl->handler, struct g2d_ctx,
 176                                                                 ctrl_handler);
 177         unsigned long flags;
 178
 179         spin_lock_irqsave(&ctx->dev->ctrl_lock, flags);
 180         switch (ctrl->id) {
 181         case V4L2_CID_COLORFX:
 182                 if (ctrl->val == V4L2_COLORFX_NEGATIVE)
 183                         ctx->rop = ROP4_INVERT;
 184                 else
 185                         ctx->rop = ROP4_COPY;
 186                 break;
 187
 188         case V4L2_CID_HFLIP:
 189                 ctx->flip = ctx->ctrl_hflip->val | (ctx->ctrl_vflip->val << 1);
 190                 break;
 191
 192         }
 193         spin_unlock_irqrestore(&ctx->dev->ctrl_lock, flags);
 194         return 0;
 195 }
 196
 197 static const struct v4l2_ctrl_ops g2d_ctrl_ops = {
 198         .s_ctrl         = g2d_s_ctrl,
 199 };
 200
 201 static int g2d_setup_ctrls(struct g2d_ctx *ctx)
 202 {
 203         struct g2d_dev *dev = ctx->dev;
 204
 205         v4l2_ctrl_handler_init(&ctx->ctrl_handler, 3);
 206
 207         ctx->ctrl_hflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, &g2d_ctrl_ops,
 208                                                 V4L2_CID_HFLIP, 0, 1, 1, 0);
 209
 210         ctx->ctrl_vflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, &g2d_ctrl_ops,
 211                                                 V4L2_CID_VFLIP, 0, 1, 1, 0);
 212
 213         v4l2_ctrl_new_std_menu(
 214                 &ctx->ctrl_handler,
 215                 &g2d_ctrl_ops,
 216                 V4L2_CID_COLORFX,
 217                 V4L2_COLORFX_NEGATIVE,
 218                 ~((1 << V4L2_COLORFX_NONE) | (1 << V4L2_COLORFX_NEGATIVE)),
 219                 V4L2_COLORFX_NONE);
 220
 221         if (ctx->ctrl_handler.error) {
 222                 int err = ctx->ctrl_handler.error;
 223                 v4l2_err(&dev->v4l2_dev, "g2d_setup_ctrls failed\n");
 224                 v4l2_ctrl_handler_free(&ctx->ctrl_handler);
 225                 return err;
 226         }
 227
 228         v4l2_ctrl_cluster(2, &ctx->ctrl_hflip);
 229
 230         return 0;
 231 }
 232
 233 static int g2d_open(struct file *file)
 234 {
 235         struct g2d_dev *dev = video_drvdata(file);
 236         struct g2d_ctx *ctx = NULL;
 237         int ret = 0;
 238
 239         ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
 240         if (!ctx)
 241                 return -ENOMEM;
 242         ctx->dev = dev;
 243         /* Set default formats */
 244         ctx->in         = def_frame;
 245         ctx->out        = def_frame;
 246
 247         if (mutex_lock_interruptible(&dev->mutex)) {
 248                 kfree(ctx);
 249                 return -ERESTARTSYS;
 250         }
 251         ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx, &queue_init);
 252         if (IS_ERR(ctx->fh.m2m_ctx)) {
 253                 ret = PTR_ERR(ctx->fh.m2m_ctx);
 254                 mutex_unlock(&dev->mutex);
 255                 kfree(ctx);
 256                 return ret;
 257         }
 258         v4l2_fh_init(&ctx->fh, video_devdata(file));
 259         file->private_data = &ctx->fh;
 260         v4l2_fh_add(&ctx->fh);
 261
 262         g2d_setup_ctrls(ctx);
 263
 264         /* Write the default values to the ctx struct */
 265         v4l2_ctrl_handler_setup(&ctx->ctrl_handler);
 266
 267         ctx->fh.ctrl_handler = &ctx->ctrl_handler;
 268         mutex_unlock(&dev->mutex);
 269
 270         v4l2_info(&dev->v4l2_dev, "instance opened\n");
 271         return 0;
 272 }
 273
 274 static int g2d_release(struct file *file)
 275 {
 276         struct g2d_dev *dev = video_drvdata(file);
 277         struct g2d_ctx *ctx = fh2ctx(file->private_data);
 278
 279         v4l2_ctrl_handler_free(&ctx->ctrl_handler);
 280         v4l2_fh_del(&ctx->fh);
 281         v4l2_fh_exit(&ctx->fh);
 282         kfree(ctx);
 283         v4l2_info(&dev->v4l2_dev, "instance closed\n");
 284         return 0;
 285 }
 286
 287
 288 static int vidioc_querycap(struct file *file, void *priv,
 289                                 struct v4l2_capability *cap)
 290 {
 291         strscpy(cap->driver, G2D_NAME, sizeof(cap->driver));
 292         strscpy(cap->card, G2D_NAME, sizeof(cap->card));
 293         cap->bus_info[0] = 0;
 294         return 0;
 295 }
 296
 297 static int vidioc_enum_fmt(struct file *file, void *prv, struct v4l2_fmtdesc *f)
 298 {
 299         if (f->index >= NUM_FORMATS)
 300                 return -EINVAL;
 301         f->pixelformat = formats[f->index].fourcc;
 302         return 0;
 303 }
 304
 305 static int vidioc_g_fmt(struct file *file, void *prv, struct v4l2_format *f)
 306 {
 307         struct g2d_ctx *ctx = prv;
 308         struct vb2_queue *vq;
 309         struct g2d_frame *frm;
 310
 311         vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
 312         if (!vq)
 313                 return -EINVAL;
 314         frm = get_frame(ctx, f->type);
 315         if (IS_ERR(frm))
 316                 return PTR_ERR(frm);
 317
 318         f->fmt.pix.width                = frm->width;
 319         f->fmt.pix.height               = frm->height;
 320         f->fmt.pix.field                = V4L2_FIELD_NONE;
 321         f->fmt.pix.pixelformat          = frm->fmt->fourcc;
 322         f->fmt.pix.bytesperline         = (frm->width * frm->fmt->depth) >> 3;
 323         f->fmt.pix.sizeimage            = frm->size;
 324         return 0;
 325 }
 326
 327 static int vidioc_try_fmt(struct file *file, void *prv, struct v4l2_format *f)
 328 {
 329         struct g2d_fmt *fmt;
 330         enum v4l2_field *field;
 331
 332         fmt = find_fmt(f);
 333         if (!fmt)
 334                 return -EINVAL;
 335
 336         field = &f->fmt.pix.field;
 337         if (*field == V4L2_FIELD_ANY)
 338                 *field = V4L2_FIELD_NONE;
 339         else if (*field != V4L2_FIELD_NONE)
 340                 return -EINVAL;
 341
 342         if (f->fmt.pix.width > MAX_WIDTH)
 343                 f->fmt.pix.width = MAX_WIDTH;
 344         if (f->fmt.pix.height > MAX_HEIGHT)
 345                 f->fmt.pix.height = MAX_HEIGHT;
 346
 347         if (f->fmt.pix.width < 1)
 348                 f->fmt.pix.width = 1;
 349         if (f->fmt.pix.height < 1)
 350                 f->fmt.pix.height = 1;
 351
 352         f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
 353         f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
 354         return 0;
 355 }
 356
 357 static int vidioc_s_fmt(struct file *file, void *prv, struct v4l2_format *f)
 358 {
 359         struct g2d_ctx *ctx = prv;
 360         struct g2d_dev *dev = ctx->dev;
 361         struct vb2_queue *vq;
 362         struct g2d_frame *frm;
 363         struct g2d_fmt *fmt;
 364         int ret = 0;
 365
 366         /* Adjust all values accordingly to the hardware capabilities
 367          * and chosen format. */
 368         ret = vidioc_try_fmt(file, prv, f);
 369         if (ret)
 370                 return ret;
 371         vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
 372         if (vb2_is_busy(vq)) {
 373                 v4l2_err(&dev->v4l2_dev, "queue (%d) bust\n", f->type);
 374                 return -EBUSY;
 375         }
 376         frm = get_frame(ctx, f->type);
 377         if (IS_ERR(frm))
 378                 return PTR_ERR(frm);
 379         fmt = find_fmt(f);
 380         if (!fmt)
 381                 return -EINVAL;
 382         frm->width      = f->fmt.pix.width;
 383         frm->height     = f->fmt.pix.height;
 384         frm->size       = f->fmt.pix.sizeimage;
 385         /* Reset crop settings */
 386         frm->o_width    = 0;
 387         frm->o_height   = 0;
 388         frm->c_width    = frm->width;
 389         frm->c_height   = frm->height;
 390         frm->right      = frm->width;
 391         frm->bottom     = frm->height;
 392         frm->fmt        = fmt;
 393         frm->stride     = f->fmt.pix.bytesperline;
 394         return 0;
 395 }
 396
 397 static int vidioc_g_selection(struct file *file, void *prv,
 398                               struct v4l2_selection *s)
 399 {
 400         struct g2d_ctx *ctx = prv;
 401         struct g2d_frame *f;
 402
 403         f = get_frame(ctx, s->type);
 404         if (IS_ERR(f))
 405                 return PTR_ERR(f);
 406
 407         switch (s->target) {
 408         case V4L2_SEL_TGT_CROP:
 409         case V4L2_SEL_TGT_CROP_DEFAULT:
 410         case V4L2_SEL_TGT_CROP_BOUNDS:
 411                 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
 412                         return -EINVAL;
 413                 break;
 414         case V4L2_SEL_TGT_COMPOSE:
 415         case V4L2_SEL_TGT_COMPOSE_DEFAULT:
 416         case V4L2_SEL_TGT_COMPOSE_BOUNDS:
 417                 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 418                         return -EINVAL;
 419                 break;
 420         default:
 421                 return -EINVAL;
 422         }
 423
 424         switch (s->target) {
 425         case V4L2_SEL_TGT_CROP:
 426         case V4L2_SEL_TGT_COMPOSE:
 427                 s->r.left = f->o_height;
 428                 s->r.top = f->o_width;
 429                 s->r.width = f->c_width;
 430                 s->r.height = f->c_height;
 431                 break;
 432         case V4L2_SEL_TGT_CROP_DEFAULT:
 433         case V4L2_SEL_TGT_CROP_BOUNDS:
 434         case V4L2_SEL_TGT_COMPOSE_DEFAULT:
 435         case V4L2_SEL_TGT_COMPOSE_BOUNDS:
 436                 s->r.left = 0;
 437                 s->r.top = 0;
 438                 s->r.width = f->width;
 439                 s->r.height = f->height;
 440                 break;
 441         default:
 442                 return -EINVAL;
 443         }
 444         return 0;
 445 }
 446
 447 static int vidioc_try_selection(struct file *file, void *prv,
 448                                 const struct v4l2_selection *s)
 449 {
 450         struct g2d_ctx *ctx = prv;
 451         struct g2d_dev *dev = ctx->dev;
 452         struct g2d_frame *f;
 453
 454         f = get_frame(ctx, s->type);
 455         if (IS_ERR(f))
 456                 return PTR_ERR(f);
 457
 458         if (s->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
 459                 if (s->target != V4L2_SEL_TGT_COMPOSE)
 460                         return -EINVAL;
 461         } else if (s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
 462                 if (s->target != V4L2_SEL_TGT_CROP)
 463                         return -EINVAL;
 464         }
 465
 466         if (s->r.top < 0 || s->r.left < 0) {
 467                 v4l2_err(&dev->v4l2_dev,
 468                         "doesn't support negative values for top & left\n");
 469                 return -EINVAL;
 470         }
 471
 472         return 0;
 473 }
 474
 475 static int vidioc_s_selection(struct file *file, void *prv,
 476                               struct v4l2_selection *s)
 477 {
 478         struct g2d_ctx *ctx = prv;
 479         struct g2d_frame *f;
 480         int ret;
 481
 482         ret = vidioc_try_selection(file, prv, s);
 483         if (ret)
 484                 return ret;
 485         f = get_frame(ctx, s->type);
 486         if (IS_ERR(f))
 487                 return PTR_ERR(f);
 488
 489         f->c_width      = s->r.width;
 490         f->c_height     = s->r.height;
 491         f->o_width      = s->r.left;
 492         f->o_height     = s->r.top;
 493         f->bottom       = f->o_height + f->c_height;
 494         f->right        = f->o_width + f->c_width;
 495         return 0;
 496 }
 497
 498 static void device_run(void *prv)
 499 {
 500         struct g2d_ctx *ctx = prv;
 501         struct g2d_dev *dev = ctx->dev;
 502         struct vb2_v4l2_buffer *src, *dst;
 503         unsigned long flags;
 504         u32 cmd = 0;
 505
 506         dev->curr = ctx;
 507
 508         src = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
 509         dst = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
 510
 511         clk_enable(dev->gate);
 512         g2d_reset(dev);
 513
 514         spin_lock_irqsave(&dev->ctrl_lock, flags);
 515
 516         g2d_set_src_size(dev, &ctx->in);
 517         g2d_set_src_addr(dev, vb2_dma_contig_plane_dma_addr(&src->vb2_buf, 0));
 518
 519         g2d_set_dst_size(dev, &ctx->out);
 520         g2d_set_dst_addr(dev, vb2_dma_contig_plane_dma_addr(&dst->vb2_buf, 0));
 521
 522         g2d_set_rop4(dev, ctx->rop);
 523         g2d_set_flip(dev, ctx->flip);
 524
 525         if (ctx->in.c_width != ctx->out.c_width ||
 526                 ctx->in.c_height != ctx->out.c_height) {
 527                 if (dev->variant->hw_rev == TYPE_G2D_3X)
 528                         cmd |= CMD_V3_ENABLE_STRETCH;
 529                 else
 530                         g2d_set_v41_stretch(dev, &ctx->in, &ctx->out);
 531         }
 532
 533         g2d_set_cmd(dev, cmd);
 534         g2d_start(dev);
 535
 536         spin_unlock_irqrestore(&dev->ctrl_lock, flags);
 537 }
 538
 539 static irqreturn_t g2d_isr(int irq, void *prv)
 540 {
 541         struct g2d_dev *dev = prv;
 542         struct g2d_ctx *ctx = dev->curr;
 543         struct vb2_v4l2_buffer *src, *dst;
 544
 545         g2d_clear_int(dev);
 546         clk_disable(dev->gate);
 547
 548         BUG_ON(ctx == NULL);
 549
 550         src = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
 551         dst = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
 552
 553         BUG_ON(src == NULL);
 554         BUG_ON(dst == NULL);
 555
 556         dst->timecode = src->timecode;
 557         dst->vb2_buf.timestamp = src->vb2_buf.timestamp;
 558         dst->flags &= ~V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
 559         dst->flags |=
 560                 src->flags & V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
 561
 562         v4l2_m2m_buf_done(src, VB2_BUF_STATE_DONE);
 563         v4l2_m2m_buf_done(dst, VB2_BUF_STATE_DONE);
 564         v4l2_m2m_job_finish(dev->m2m_dev, ctx->fh.m2m_ctx);
 565
 566         dev->curr = NULL;
 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_selection             = vidioc_g_selection,
 601         .vidioc_s_selection             = vidioc_s_selection,
 602 };
 603
 604 static const struct video_device g2d_videodev = {
 605         .name           = G2D_NAME,
 606         .fops           = &g2d_fops,
 607         .ioctl_ops      = &g2d_ioctl_ops,
 608         .minor          = -1,
 609         .release        = video_device_release,
 610         .vfl_dir        = VFL_DIR_M2M,
 611 };
 612
 613 static const struct v4l2_m2m_ops g2d_m2m_ops = {
 614         .device_run     = device_run,
 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
 635         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 636
 637         dev->regs = devm_ioremap_resource(&pdev->dev, res);
 638         if (IS_ERR(dev->regs))
 639                 return PTR_ERR(dev->regs);
 640
 641         dev->clk = clk_get(&pdev->dev, "sclk_fimg2d");
 642         if (IS_ERR(dev->clk)) {
 643                 dev_err(&pdev->dev, "failed to get g2d clock\n");
 644                 return -ENXIO;
 645         }
 646
 647         ret = clk_prepare(dev->clk);
 648         if (ret) {
 649                 dev_err(&pdev->dev, "failed to prepare g2d clock\n");
 650                 goto put_clk;
 651         }
 652
 653         dev->gate = clk_get(&pdev->dev, "fimg2d");
 654         if (IS_ERR(dev->gate)) {
 655                 dev_err(&pdev->dev, "failed to get g2d clock gate\n");
 656                 ret = -ENXIO;
 657                 goto unprep_clk;
 658         }
 659
 660         ret = clk_prepare(dev->gate);
 661         if (ret) {
 662                 dev_err(&pdev->dev, "failed to prepare g2d clock gate\n");
 663                 goto put_clk_gate;
 664         }
 665
 666         res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
 667         if (!res) {
 668                 dev_err(&pdev->dev, "failed to find IRQ\n");
 669                 ret = -ENXIO;
 670                 goto unprep_clk_gate;
 671         }
 672
 673         dev->irq = res->start;
 674
 675         ret = devm_request_irq(&pdev->dev, dev->irq, g2d_isr,
 676                                                 0, pdev->name, dev);
 677         if (ret) {
 678                 dev_err(&pdev->dev, "failed to install IRQ\n");
 679                 goto unprep_clk_gate;
 680         }
 681
 682         vb2_dma_contig_set_max_seg_size(&pdev->dev, DMA_BIT_MASK(32));
 683
 684         ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
 685         if (ret)
 686                 goto unprep_clk_gate;
 687         vfd = video_device_alloc();
 688         if (!vfd) {
 689                 v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n");
 690                 ret = -ENOMEM;
 691                 goto unreg_v4l2_dev;
 692         }
 693         *vfd = g2d_videodev;
 694         set_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags);
 695         vfd->lock = &dev->mutex;
 696         vfd->v4l2_dev = &dev->v4l2_dev;
 697         vfd->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
 698         ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0);
 699         if (ret) {
 700                 v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
 701                 goto rel_vdev;
 702         }
 703         video_set_drvdata(vfd, dev);
 704         dev->vfd = vfd;
 705         v4l2_info(&dev->v4l2_dev, "device registered as /dev/video%d\n",
 706                                                                 vfd->num);
 707         platform_set_drvdata(pdev, dev);
 708         dev->m2m_dev = v4l2_m2m_init(&g2d_m2m_ops);
 709         if (IS_ERR(dev->m2m_dev)) {
 710                 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n");
 711                 ret = PTR_ERR(dev->m2m_dev);
 712                 goto unreg_video_dev;
 713         }
 714
 715         def_frame.stride = (def_frame.width * def_frame.fmt->depth) >> 3;
 716
 717         of_id = of_match_node(exynos_g2d_match, pdev->dev.of_node);
 718         if (!of_id) {
 719                 ret = -ENODEV;
 720                 goto unreg_video_dev;
 721         }
 722         dev->variant = (struct g2d_variant *)of_id->data;
 723
 724         return 0;
 725
 726 unreg_video_dev:
 727         video_unregister_device(dev->vfd);
 728 rel_vdev:
 729         video_device_release(vfd);
 730 unreg_v4l2_dev:
 731         v4l2_device_unregister(&dev->v4l2_dev);
 732 unprep_clk_gate:
 733         clk_unprepare(dev->gate);
 734 put_clk_gate:
 735         clk_put(dev->gate);
 736 unprep_clk:
 737         clk_unprepare(dev->clk);
 738 put_clk:
 739         clk_put(dev->clk);
 740
 741         return ret;
 742 }
 743
 744 static int g2d_remove(struct platform_device *pdev)
 745 {
 746         struct g2d_dev *dev = platform_get_drvdata(pdev);
 747
 748         v4l2_info(&dev->v4l2_dev, "Removing " G2D_NAME);
 749         v4l2_m2m_release(dev->m2m_dev);
 750         video_unregister_device(dev->vfd);
 751         v4l2_device_unregister(&dev->v4l2_dev);
 752         vb2_dma_contig_clear_max_seg_size(&pdev->dev);
 753         clk_unprepare(dev->gate);
 754         clk_put(dev->gate);
 755         clk_unprepare(dev->clk);
 756         clk_put(dev->clk);
 757         return 0;
 758 }
 759
 760 static struct g2d_variant g2d_drvdata_v3x = {
 761         .hw_rev = TYPE_G2D_3X, /* Revision 3.0 for S5PV210 and Exynos4210 */
 762 };
 763
 764 static struct g2d_variant g2d_drvdata_v4x = {
 765         .hw_rev = TYPE_G2D_4X, /* Revision 4.1 for Exynos4X12 and Exynos5 */
 766 };
 767
 768 static const struct of_device_id exynos_g2d_match[] = {
 769         {
 770                 .compatible = "samsung,s5pv210-g2d",
 771                 .data = &g2d_drvdata_v3x,
 772         }, {
 773                 .compatible = "samsung,exynos4212-g2d",
 774                 .data = &g2d_drvdata_v4x,
 775         },
 776         {},
 777 };
 778 MODULE_DEVICE_TABLE(of, exynos_g2d_match);
 779
 780 static struct platform_driver g2d_pdrv = {
 781         .probe          = g2d_probe,
 782         .remove         = g2d_remove,
 783         .driver         = {
 784                 .name = G2D_NAME,
 785                 .of_match_table = exynos_g2d_match,
 786         },
 787 };
 788
 789 module_platform_driver(g2d_pdrv);
 790
 791 MODULE_AUTHOR("Kamil Debski <k.debski@samsung.com>");
 792 MODULE_DESCRIPTION("S5P G2D 2d graphics accelerator driver");
 793 MODULE_LICENSE("GPL");