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

   1 /*
   2  * Samsung S5P G2D - 2D Graphics Accelerator Driver
   3  *
   4  * Copyright (c) 2011 Samsung Electronics Co., Ltd.
   5  * Kamil Debski, <k.debski@samsung.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by the
   9  * Free Software Foundation; either version 2 of the
  10  * License, or (at your option) any later version
  11  */
  12
  13 #include <linux/module.h>
  14 #include <linux/fs.h>
  15 #include <linux/version.h>
  16 #include <linux/timer.h>
  17 #include <linux/sched.h>
  18 #include <linux/slab.h>
  19 #include <linux/clk.h>
  20 #include <linux/interrupt.h>
  21
  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 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 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->m2m_ctx, vb);
 139 }
 140
 141
 142 static struct vb2_ops g2d_qops = {
 143         .queue_setup    = g2d_queue_setup,
 144         .buf_prepare    = g2d_buf_prepare,
 145         .buf_queue      = g2d_buf_queue,
 146 };
 147
 148 static int queue_init(void *priv, struct vb2_queue *src_vq,
 149                                                 struct vb2_queue *dst_vq)
 150 {
 151         struct g2d_ctx *ctx = priv;
 152         int ret;
 153
 154         memset(src_vq, 0, sizeof(*src_vq));
 155         src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
 156         src_vq->io_modes = VB2_MMAP | VB2_USERPTR;
 157         src_vq->drv_priv = ctx;
 158         src_vq->ops = &g2d_qops;
 159         src_vq->mem_ops = &vb2_dma_contig_memops;
 160         src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
 161
 162         ret = vb2_queue_init(src_vq);
 163         if (ret)
 164                 return ret;
 165
 166         memset(dst_vq, 0, sizeof(*dst_vq));
 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
 174         return vb2_queue_init(dst_vq);
 175 }
 176
 177 static int g2d_s_ctrl(struct v4l2_ctrl *ctrl)
 178 {
 179         struct g2d_ctx *ctx = container_of(ctrl->handler, struct g2d_ctx,
 180                                                                 ctrl_handler);
 181         switch (ctrl->id) {
 182         case V4L2_CID_COLORFX:
 183                 if (ctrl->val == V4L2_COLORFX_NEGATIVE)
 184                         ctx->rop = ROP4_INVERT;
 185                 else
 186                         ctx->rop = ROP4_COPY;
 187                 break;
 188         default:
 189                 v4l2_err(&ctx->dev->v4l2_dev, "unknown control\n");
 190                 return -EINVAL;
 191         }
 192         return 0;
 193 }
 194
 195 static const struct v4l2_ctrl_ops g2d_ctrl_ops = {
 196         .s_ctrl         = g2d_s_ctrl,
 197 };
 198
 199 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, 1);
 204         if (ctx->ctrl_handler.error) {
 205                 v4l2_err(&dev->v4l2_dev, "v4l2_ctrl_handler_init failed\n");
 206                 return ctx->ctrl_handler.error;
 207         }
 208
 209         v4l2_ctrl_new_std_menu(
 210                 &ctx->ctrl_handler,
 211                 &g2d_ctrl_ops,
 212                 V4L2_CID_COLORFX,
 213                 V4L2_COLORFX_NEGATIVE,
 214                 ~((1 << V4L2_COLORFX_NONE) | (1 << V4L2_COLORFX_NEGATIVE)),
 215                 V4L2_COLORFX_NONE);
 216
 217         if (ctx->ctrl_handler.error) {
 218                 v4l2_err(&dev->v4l2_dev, "v4l2_ctrl_handler_init failed\n");
 219                 return ctx->ctrl_handler.error;
 220         }
 221
 222         return 0;
 223 }
 224
 225 static int g2d_open(struct file *file)
 226 {
 227         struct g2d_dev *dev = video_drvdata(file);
 228         struct g2d_ctx *ctx = NULL;
 229         int ret = 0;
 230
 231         ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
 232         if (!ctx)
 233                 return -ENOMEM;
 234         ctx->dev = dev;
 235         /* Set default formats */
 236         ctx->in         = def_frame;
 237         ctx->out        = def_frame;
 238
 239         ctx->m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx, &queue_init);
 240         if (IS_ERR(ctx->m2m_ctx)) {
 241                 ret = PTR_ERR(ctx->m2m_ctx);
 242                 kfree(ctx);
 243                 return ret;
 244         }
 245         v4l2_fh_init(&ctx->fh, video_devdata(file));
 246         file->private_data = &ctx->fh;
 247         v4l2_fh_add(&ctx->fh);
 248
 249         g2d_setup_ctrls(ctx);
 250
 251         /* Write the default values to the ctx struct */
 252         v4l2_ctrl_handler_setup(&ctx->ctrl_handler);
 253
 254         ctx->fh.ctrl_handler = &ctx->ctrl_handler;
 255
 256         v4l2_info(&dev->v4l2_dev, "instance opened\n");
 257         return 0;
 258 }
 259
 260 static int g2d_release(struct file *file)
 261 {
 262         struct g2d_dev *dev = video_drvdata(file);
 263         struct g2d_ctx *ctx = fh2ctx(file->private_data);
 264
 265         v4l2_ctrl_handler_free(&ctx->ctrl_handler);
 266         v4l2_fh_del(&ctx->fh);
 267         v4l2_fh_exit(&ctx->fh);
 268         kfree(ctx);
 269         v4l2_info(&dev->v4l2_dev, "instance closed\n");
 270         return 0;
 271 }
 272
 273
 274 static int vidioc_querycap(struct file *file, void *priv,
 275                                 struct v4l2_capability *cap)
 276 {
 277         strncpy(cap->driver, G2D_NAME, sizeof(cap->driver) - 1);
 278         strncpy(cap->card, G2D_NAME, sizeof(cap->card) - 1);
 279         cap->bus_info[0] = 0;
 280         cap->version = KERNEL_VERSION(1, 0, 0);
 281         cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT
 282                                                         | V4L2_CAP_STREAMING;
 283         return 0;
 284 }
 285
 286 static int vidioc_enum_fmt(struct file *file, void *prv, struct v4l2_fmtdesc *f)
 287 {
 288         struct g2d_fmt *fmt;
 289         if (f->index >= NUM_FORMATS)
 290                 return -EINVAL;
 291         fmt = &formats[f->index];
 292         f->pixelformat = fmt->fourcc;
 293         strncpy(f->description, fmt->name, sizeof(f->description) - 1);
 294         return 0;
 295 }
 296
 297 static int vidioc_g_fmt(struct file *file, void *prv, struct v4l2_format *f)
 298 {
 299         struct g2d_ctx *ctx = prv;
 300         struct vb2_queue *vq;
 301         struct g2d_frame *frm;
 302
 303         vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type);
 304         if (!vq)
 305                 return -EINVAL;
 306         frm = get_frame(ctx, f->type);
 307         if (IS_ERR(frm))
 308                 return PTR_ERR(frm);
 309
 310         f->fmt.pix.width                = frm->width;
 311         f->fmt.pix.height               = frm->height;
 312         f->fmt.pix.field                = V4L2_FIELD_NONE;
 313         f->fmt.pix.pixelformat          = frm->fmt->fourcc;
 314         f->fmt.pix.bytesperline         = (frm->width * frm->fmt->depth) >> 3;
 315         f->fmt.pix.sizeimage            = frm->size;
 316         return 0;
 317 }
 318
 319 static int vidioc_try_fmt(struct file *file, void *prv, struct v4l2_format *f)
 320 {
 321         struct g2d_fmt *fmt;
 322         enum v4l2_field *field;
 323
 324         fmt = find_fmt(f);
 325         if (!fmt)
 326                 return -EINVAL;
 327
 328         field = &f->fmt.pix.field;
 329         if (*field == V4L2_FIELD_ANY)
 330                 *field = V4L2_FIELD_NONE;
 331         else if (*field != V4L2_FIELD_NONE)
 332                 return -EINVAL;
 333
 334         if (f->fmt.pix.width > MAX_WIDTH)
 335                 f->fmt.pix.width = MAX_WIDTH;
 336         if (f->fmt.pix.height > MAX_HEIGHT)
 337                 f->fmt.pix.height = MAX_HEIGHT;
 338
 339         if (f->fmt.pix.width < 1)
 340                 f->fmt.pix.width = 1;
 341         if (f->fmt.pix.height < 1)
 342                 f->fmt.pix.height = 1;
 343
 344         f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
 345         f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
 346         return 0;
 347 }
 348
 349 static int vidioc_s_fmt(struct file *file, void *prv, struct v4l2_format *f)
 350 {
 351         struct g2d_ctx *ctx = prv;
 352         struct g2d_dev *dev = ctx->dev;
 353         struct vb2_queue *vq;
 354         struct g2d_frame *frm;
 355         struct g2d_fmt *fmt;
 356         int ret = 0;
 357
 358         /* Adjust all values accordingly to the hardware capabilities
 359          * and chosen format. */
 360         ret = vidioc_try_fmt(file, prv, f);
 361         if (ret)
 362                 return ret;
 363         vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type);
 364         if (vb2_is_busy(vq)) {
 365                 v4l2_err(&dev->v4l2_dev, "queue (%d) bust\n", f->type);
 366                 return -EBUSY;
 367         }
 368         frm = get_frame(ctx, f->type);
 369         if (IS_ERR(frm))
 370                 return PTR_ERR(frm);
 371         fmt = find_fmt(f);
 372         if (!fmt)
 373                 return -EINVAL;
 374         frm->width      = f->fmt.pix.width;
 375         frm->height     = f->fmt.pix.height;
 376         frm->size       = f->fmt.pix.sizeimage;
 377         /* Reset crop settings */
 378         frm->o_width    = 0;
 379         frm->o_height   = 0;
 380         frm->c_width    = frm->width;
 381         frm->c_height   = frm->height;
 382         frm->right      = frm->width;
 383         frm->bottom     = frm->height;
 384         frm->fmt        = fmt;
 385         frm->stride     = f->fmt.pix.bytesperline;
 386         return 0;
 387 }
 388
 389 static unsigned int g2d_poll(struct file *file, struct poll_table_struct *wait)
 390 {
 391         struct g2d_ctx *ctx = fh2ctx(file->private_data);
 392         return v4l2_m2m_poll(file, ctx->m2m_ctx, wait);
 393 }
 394
 395 static int g2d_mmap(struct file *file, struct vm_area_struct *vma)
 396 {
 397         struct g2d_ctx *ctx = fh2ctx(file->private_data);
 398         return v4l2_m2m_mmap(file, ctx->m2m_ctx, vma);
 399 }
 400
 401 static int vidioc_reqbufs(struct file *file, void *priv,
 402                         struct v4l2_requestbuffers *reqbufs)
 403 {
 404         struct g2d_ctx *ctx = priv;
 405         return v4l2_m2m_reqbufs(file, ctx->m2m_ctx, reqbufs);
 406 }
 407
 408 static int vidioc_querybuf(struct file *file, void *priv,
 409                         struct v4l2_buffer *buf)
 410 {
 411         struct g2d_ctx *ctx = priv;
 412         return v4l2_m2m_querybuf(file, ctx->m2m_ctx, buf);
 413 }
 414
 415 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
 416 {
 417         struct g2d_ctx *ctx = priv;
 418         return v4l2_m2m_qbuf(file, ctx->m2m_ctx, buf);
 419 }
 420
 421 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
 422 {
 423         struct g2d_ctx *ctx = priv;
 424         return v4l2_m2m_dqbuf(file, ctx->m2m_ctx, buf);
 425 }
 426
 427
 428 static int vidioc_streamon(struct file *file, void *priv,
 429                                         enum v4l2_buf_type type)
 430 {
 431         struct g2d_ctx *ctx = priv;
 432         return v4l2_m2m_streamon(file, ctx->m2m_ctx, type);
 433 }
 434
 435 static int vidioc_streamoff(struct file *file, void *priv,
 436                                         enum v4l2_buf_type type)
 437 {
 438         struct g2d_ctx *ctx = priv;
 439         return v4l2_m2m_streamoff(file, ctx->m2m_ctx, type);
 440 }
 441
 442 static int vidioc_cropcap(struct file *file, void *priv,
 443                                         struct v4l2_cropcap *cr)
 444 {
 445         struct g2d_ctx *ctx = priv;
 446         struct g2d_frame *f;
 447
 448         f = get_frame(ctx, cr->type);
 449         if (IS_ERR(f))
 450                 return PTR_ERR(f);
 451
 452         cr->bounds.left         = 0;
 453         cr->bounds.top          = 0;
 454         cr->bounds.width        = f->width;
 455         cr->bounds.height       = f->height;
 456         cr->defrect             = cr->bounds;
 457         return 0;
 458 }
 459
 460 static int vidioc_g_crop(struct file *file, void *prv, struct v4l2_crop *cr)
 461 {
 462         struct g2d_ctx *ctx = prv;
 463         struct g2d_frame *f;
 464
 465         f = get_frame(ctx, cr->type);
 466         if (IS_ERR(f))
 467                 return PTR_ERR(f);
 468
 469         cr->c.left      = f->o_height;
 470         cr->c.top       = f->o_width;
 471         cr->c.width     = f->c_width;
 472         cr->c.height    = f->c_height;
 473         return 0;
 474 }
 475
 476 static int vidioc_try_crop(struct file *file, void *prv, struct v4l2_crop *cr)
 477 {
 478         struct g2d_ctx *ctx = prv;
 479         struct g2d_dev *dev = ctx->dev;
 480         struct g2d_frame *f;
 481
 482         f = get_frame(ctx, cr->type);
 483         if (IS_ERR(f))
 484                 return PTR_ERR(f);
 485
 486         if (cr->c.top < 0 || cr->c.left < 0) {
 487                 v4l2_err(&dev->v4l2_dev,
 488                         "doesn't support negative values for top & left\n");
 489                 return -EINVAL;
 490         }
 491
 492         return 0;
 493 }
 494
 495 static int vidioc_s_crop(struct file *file, void *prv, struct v4l2_crop *cr)
 496 {
 497         struct g2d_ctx *ctx = prv;
 498         struct g2d_frame *f;
 499         int ret;
 500
 501         ret = vidioc_try_crop(file, prv, cr);
 502         if (ret)
 503                 return ret;
 504         f = get_frame(ctx, cr->type);
 505         if (IS_ERR(f))
 506                 return PTR_ERR(f);
 507
 508         f->c_width      = cr->c.width;
 509         f->c_height     = cr->c.height;
 510         f->o_width      = cr->c.left;
 511         f->o_height     = cr->c.top;
 512         f->bottom       = f->o_height + f->c_height;
 513         f->right        = f->o_width + f->c_width;
 514         return 0;
 515 }
 516
 517 static void g2d_lock(void *prv)
 518 {
 519         struct g2d_ctx *ctx = prv;
 520         struct g2d_dev *dev = ctx->dev;
 521         mutex_lock(&dev->mutex);
 522 }
 523
 524 static void g2d_unlock(void *prv)
 525 {
 526         struct g2d_ctx *ctx = prv;
 527         struct g2d_dev *dev = ctx->dev;
 528         mutex_unlock(&dev->mutex);
 529 }
 530
 531 static void job_abort(void *prv)
 532 {
 533         struct g2d_ctx *ctx = prv;
 534         struct g2d_dev *dev = ctx->dev;
 535         int ret;
 536
 537         if (dev->curr == 0) /* No job currently running */
 538                 return;
 539
 540         ret = wait_event_timeout(dev->irq_queue,
 541                 dev->curr == 0,
 542                 msecs_to_jiffies(G2D_TIMEOUT));
 543 }
 544
 545 static void device_run(void *prv)
 546 {
 547         struct g2d_ctx *ctx = prv;
 548         struct g2d_dev *dev = ctx->dev;
 549         struct vb2_buffer *src, *dst;
 550         u32 cmd = 0;
 551
 552         dev->curr = ctx;
 553
 554         src = v4l2_m2m_next_src_buf(ctx->m2m_ctx);
 555         dst = v4l2_m2m_next_dst_buf(ctx->m2m_ctx);
 556
 557         clk_enable(dev->gate);
 558         g2d_reset(dev);
 559
 560         g2d_set_src_size(dev, &ctx->in);
 561         g2d_set_src_addr(dev, vb2_dma_contig_plane_dma_addr(src, 0));
 562
 563         g2d_set_dst_size(dev, &ctx->out);
 564         g2d_set_dst_addr(dev, vb2_dma_contig_plane_dma_addr(dst, 0));
 565
 566         g2d_set_rop4(dev, ctx->rop);
 567         if (ctx->in.c_width != ctx->out.c_width ||
 568                 ctx->in.c_height != ctx->out.c_height)
 569                 cmd |= g2d_cmd_stretch(1);
 570         g2d_set_cmd(dev, cmd);
 571         g2d_start(dev);
 572 }
 573
 574 static irqreturn_t g2d_isr(int irq, void *prv)
 575 {
 576         struct g2d_dev *dev = prv;
 577         struct g2d_ctx *ctx = dev->curr;
 578         struct vb2_buffer *src, *dst;
 579
 580         g2d_clear_int(dev);
 581         clk_disable(dev->gate);
 582
 583         BUG_ON(ctx == 0);
 584
 585         src = v4l2_m2m_src_buf_remove(ctx->m2m_ctx);
 586         dst = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx);
 587
 588         BUG_ON(src == 0);
 589         BUG_ON(dst == 0);
 590
 591         v4l2_m2m_buf_done(src, VB2_BUF_STATE_DONE);
 592         v4l2_m2m_buf_done(dst, VB2_BUF_STATE_DONE);
 593         v4l2_m2m_job_finish(dev->m2m_dev, ctx->m2m_ctx);
 594
 595         dev->curr = 0;
 596         wake_up(&dev->irq_queue);
 597         return IRQ_HANDLED;
 598 }
 599
 600 static const struct v4l2_file_operations g2d_fops = {
 601         .owner          = THIS_MODULE,
 602         .open           = g2d_open,
 603         .release        = g2d_release,
 604         .poll           = g2d_poll,
 605         .unlocked_ioctl = video_ioctl2,
 606         .mmap           = g2d_mmap,
 607 };
 608
 609 static const struct v4l2_ioctl_ops g2d_ioctl_ops = {
 610         .vidioc_querycap        = vidioc_querycap,
 611
 612         .vidioc_enum_fmt_vid_cap        = vidioc_enum_fmt,
 613         .vidioc_g_fmt_vid_cap           = vidioc_g_fmt,
 614         .vidioc_try_fmt_vid_cap         = vidioc_try_fmt,
 615         .vidioc_s_fmt_vid_cap           = vidioc_s_fmt,
 616
 617         .vidioc_enum_fmt_vid_out        = vidioc_enum_fmt,
 618         .vidioc_g_fmt_vid_out           = vidioc_g_fmt,
 619         .vidioc_try_fmt_vid_out         = vidioc_try_fmt,
 620         .vidioc_s_fmt_vid_out           = vidioc_s_fmt,
 621
 622         .vidioc_reqbufs                 = vidioc_reqbufs,
 623         .vidioc_querybuf                = vidioc_querybuf,
 624
 625         .vidioc_qbuf                    = vidioc_qbuf,
 626         .vidioc_dqbuf                   = vidioc_dqbuf,
 627
 628         .vidioc_streamon                = vidioc_streamon,
 629         .vidioc_streamoff               = vidioc_streamoff,
 630
 631         .vidioc_g_crop                  = vidioc_g_crop,
 632         .vidioc_s_crop                  = vidioc_s_crop,
 633         .vidioc_cropcap                 = vidioc_cropcap,
 634 };
 635
 636 static struct video_device g2d_videodev = {
 637         .name           = G2D_NAME,
 638         .fops           = &g2d_fops,
 639         .ioctl_ops      = &g2d_ioctl_ops,
 640         .minor          = -1,
 641         .release        = video_device_release,
 642 };
 643
 644 static struct v4l2_m2m_ops g2d_m2m_ops = {
 645         .device_run     = device_run,
 646         .job_abort      = job_abort,
 647         .lock           = g2d_lock,
 648         .unlock         = g2d_unlock,
 649 };
 650
 651 static int g2d_probe(struct platform_device *pdev)
 652 {
 653         struct g2d_dev *dev;
 654         struct video_device *vfd;
 655         struct resource *res;
 656         int ret = 0;
 657
 658         dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 659         if (!dev)
 660                 return -ENOMEM;
 661         spin_lock_init(&dev->irqlock);
 662         mutex_init(&dev->mutex);
 663         atomic_set(&dev->num_inst, 0);
 664         init_waitqueue_head(&dev->irq_queue);
 665
 666         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 667         if (!res) {
 668                 dev_err(&pdev->dev, "failed to find registers\n");
 669                 ret = -ENOENT;
 670                 goto free_dev;
 671         }
 672
 673         dev->res_regs = request_mem_region(res->start, resource_size(res),
 674                                                 dev_name(&pdev->dev));
 675
 676         if (!dev->res_regs) {
 677                 dev_err(&pdev->dev, "failed to obtain register region\n");
 678                 ret = -ENOENT;
 679                 goto free_dev;
 680         }
 681
 682         dev->regs = ioremap(res->start, resource_size(res));
 683         if (!dev->regs) {
 684                 dev_err(&pdev->dev, "failed to map registers\n");
 685                 ret = -ENOENT;
 686                 goto rel_res_regs;
 687         }
 688
 689         dev->clk = clk_get(&pdev->dev, "sclk_fimg2d");
 690         if (IS_ERR_OR_NULL(dev->clk)) {
 691                 dev_err(&pdev->dev, "failed to get g2d clock\n");
 692                 ret = -ENXIO;
 693                 goto unmap_regs;
 694         }
 695
 696         dev->gate = clk_get(&pdev->dev, "fimg2d");
 697         if (IS_ERR_OR_NULL(dev->gate)) {
 698                 dev_err(&pdev->dev, "failed to get g2d clock gate\n");
 699                 ret = -ENXIO;
 700                 goto put_clk;
 701         }
 702
 703         res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
 704         if (!res) {
 705                 dev_err(&pdev->dev, "failed to find IRQ\n");
 706                 ret = -ENXIO;
 707                 goto put_clk_gate;
 708         }
 709
 710         dev->irq = res->start;
 711
 712         ret = request_irq(dev->irq, g2d_isr, 0, pdev->name, dev);
 713         if (ret) {
 714                 dev_err(&pdev->dev, "failed to install IRQ\n");
 715                 goto put_clk_gate;
 716         }
 717
 718         dev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
 719         if (IS_ERR(dev->alloc_ctx)) {
 720                 ret = PTR_ERR(dev->alloc_ctx);
 721                 goto rel_irq;
 722         }
 723
 724         ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
 725         if (ret)
 726                 goto alloc_ctx_cleanup;
 727         vfd = video_device_alloc();
 728         if (!vfd) {
 729                 v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n");
 730                 ret = -ENOMEM;
 731                 goto unreg_v4l2_dev;
 732         }
 733         *vfd = g2d_videodev;
 734         vfd->lock = &dev->mutex;
 735         ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0);
 736         if (ret) {
 737                 v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
 738                 goto rel_vdev;
 739         }
 740         video_set_drvdata(vfd, dev);
 741         snprintf(vfd->name, sizeof(vfd->name), "%s", g2d_videodev.name);
 742         dev->vfd = vfd;
 743         v4l2_info(&dev->v4l2_dev, "device registered as /dev/video%d\n",
 744                                                                 vfd->num);
 745         platform_set_drvdata(pdev, dev);
 746         dev->m2m_dev = v4l2_m2m_init(&g2d_m2m_ops);
 747         if (IS_ERR(dev->m2m_dev)) {
 748                 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n");
 749                 ret = PTR_ERR(dev->m2m_dev);
 750                 goto unreg_video_dev;
 751         }
 752
 753         def_frame.stride = (def_frame.width * def_frame.fmt->depth) >> 3;
 754
 755         return 0;
 756
 757 unreg_video_dev:
 758         video_unregister_device(dev->vfd);
 759 rel_vdev:
 760         video_device_release(vfd);
 761 unreg_v4l2_dev:
 762         v4l2_device_unregister(&dev->v4l2_dev);
 763 alloc_ctx_cleanup:
 764         vb2_dma_contig_cleanup_ctx(dev->alloc_ctx);
 765 rel_irq:
 766         free_irq(dev->irq, dev);
 767 put_clk_gate:
 768         clk_put(dev->gate);
 769 put_clk:
 770         clk_put(dev->clk);
 771 unmap_regs:
 772         iounmap(dev->regs);
 773 rel_res_regs:
 774         release_resource(dev->res_regs);
 775 free_dev:
 776         kfree(dev);
 777         return ret;
 778 }
 779
 780 static int g2d_remove(struct platform_device *pdev)
 781 {
 782         struct g2d_dev *dev = (struct g2d_dev *)platform_get_drvdata(pdev);
 783
 784         v4l2_info(&dev->v4l2_dev, "Removing " G2D_NAME);
 785         v4l2_m2m_release(dev->m2m_dev);
 786         video_unregister_device(dev->vfd);
 787         v4l2_device_unregister(&dev->v4l2_dev);
 788         vb2_dma_contig_cleanup_ctx(dev->alloc_ctx);
 789         free_irq(dev->irq, dev);
 790         clk_put(dev->gate);
 791         clk_put(dev->clk);
 792         iounmap(dev->regs);
 793         release_resource(dev->res_regs);
 794         kfree(dev);
 795         return 0;
 796 }
 797
 798 static struct platform_driver g2d_pdrv = {
 799         .probe          = g2d_probe,
 800         .remove         = g2d_remove,
 801         .driver         = {
 802                 .name = G2D_NAME,
 803                 .owner = THIS_MODULE,
 804         },
 805 };
 806
 807 module_platform_driver(g2d_pdrv);
 808
 809 MODULE_AUTHOR("Kamil Debski <k.debski@samsung.com>");
 810 MODULE_DESCRIPTION("S5P G2D 2d graphics accelerator driver");
 811 MODULE_LICENSE("GPL");