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         default:
 188                 v4l2_err(&ctx->dev->v4l2_dev, "unknown control\n");
 189                 return -EINVAL;
 190         }
 191         return 0;
 192 }
 193
 194 static const struct v4l2_ctrl_ops g2d_ctrl_ops = {
 195         .s_ctrl         = g2d_s_ctrl,
 196 };
 197
 198 int g2d_setup_ctrls(struct g2d_ctx *ctx)
 199 {
 200         struct g2d_dev *dev = ctx->dev;
 201
 202         v4l2_ctrl_handler_init(&ctx->ctrl_handler, 1);
 203         if (ctx->ctrl_handler.error) {
 204                 v4l2_err(&dev->v4l2_dev, "v4l2_ctrl_handler_init failed\n");
 205                 return ctx->ctrl_handler.error;
 206         }
 207
 208         v4l2_ctrl_new_std_menu(
 209                 &ctx->ctrl_handler,
 210                 &g2d_ctrl_ops,
 211                 V4L2_CID_COLORFX,
 212                 V4L2_COLORFX_NEGATIVE,
 213                 ~((1 << V4L2_COLORFX_NONE) | (1 << V4L2_COLORFX_NEGATIVE)),
 214                 V4L2_COLORFX_NONE);
 215
 216         if (ctx->ctrl_handler.error) {
 217                 v4l2_err(&dev->v4l2_dev, "v4l2_ctrl_handler_init failed\n");
 218                 return ctx->ctrl_handler.error;
 219         }
 220
 221         return 0;
 222 }
 223
 224 static int g2d_open(struct file *file)
 225 {
 226         struct g2d_dev *dev = video_drvdata(file);
 227         struct g2d_ctx *ctx = NULL;
 228         int ret = 0;
 229
 230         ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
 231         if (!ctx)
 232                 return -ENOMEM;
 233         ctx->dev = dev;
 234         /* Set default formats */
 235         ctx->in         = def_frame;
 236         ctx->out        = def_frame;
 237
 238         ctx->m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx, &queue_init);
 239         if (IS_ERR(ctx->m2m_ctx)) {
 240                 ret = PTR_ERR(ctx->m2m_ctx);
 241                 kfree(ctx);
 242                 return ret;
 243         }
 244         v4l2_fh_init(&ctx->fh, video_devdata(file));
 245         file->private_data = &ctx->fh;
 246         v4l2_fh_add(&ctx->fh);
 247
 248         g2d_setup_ctrls(ctx);
 249
 250         /* Write the default values to the ctx struct */
 251         v4l2_ctrl_handler_setup(&ctx->ctrl_handler);
 252
 253         ctx->fh.ctrl_handler = &ctx->ctrl_handler;
 254
 255         v4l2_info(&dev->v4l2_dev, "instance opened\n");
 256         return 0;
 257 }
 258
 259 static int g2d_release(struct file *file)
 260 {
 261         struct g2d_dev *dev = video_drvdata(file);
 262         struct g2d_ctx *ctx = fh2ctx(file->private_data);
 263
 264         v4l2_ctrl_handler_free(&ctx->ctrl_handler);
 265         v4l2_fh_del(&ctx->fh);
 266         v4l2_fh_exit(&ctx->fh);
 267         kfree(ctx);
 268         v4l2_info(&dev->v4l2_dev, "instance closed\n");
 269         return 0;
 270 }
 271
 272
 273 static int vidioc_querycap(struct file *file, void *priv,
 274                                 struct v4l2_capability *cap)
 275 {
 276         strncpy(cap->driver, G2D_NAME, sizeof(cap->driver) - 1);
 277         strncpy(cap->card, G2D_NAME, sizeof(cap->card) - 1);
 278         cap->bus_info[0] = 0;
 279         cap->version = KERNEL_VERSION(1, 0, 0);
 280         cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT
 281                                                         | V4L2_CAP_STREAMING;
 282         return 0;
 283 }
 284
 285 static int vidioc_enum_fmt(struct file *file, void *prv, struct v4l2_fmtdesc *f)
 286 {
 287         struct g2d_fmt *fmt;
 288         if (f->index >= NUM_FORMATS)
 289                 return -EINVAL;
 290         fmt = &formats[f->index];
 291         f->pixelformat = fmt->fourcc;
 292         strncpy(f->description, fmt->name, sizeof(f->description) - 1);
 293         return 0;
 294 }
 295
 296 static int vidioc_g_fmt(struct file *file, void *prv, struct v4l2_format *f)
 297 {
 298         struct g2d_ctx *ctx = prv;
 299         struct vb2_queue *vq;
 300         struct g2d_frame *frm;
 301
 302         vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type);
 303         if (!vq)
 304                 return -EINVAL;
 305         frm = get_frame(ctx, f->type);
 306         if (IS_ERR(frm))
 307                 return PTR_ERR(frm);
 308
 309         f->fmt.pix.width                = frm->width;
 310         f->fmt.pix.height               = frm->height;
 311         f->fmt.pix.field                = V4L2_FIELD_NONE;
 312         f->fmt.pix.pixelformat          = frm->fmt->fourcc;
 313         f->fmt.pix.bytesperline         = (frm->width * frm->fmt->depth) >> 3;
 314         f->fmt.pix.sizeimage            = frm->size;
 315         return 0;
 316 }
 317
 318 static int vidioc_try_fmt(struct file *file, void *prv, struct v4l2_format *f)
 319 {
 320         struct g2d_fmt *fmt;
 321         enum v4l2_field *field;
 322
 323         fmt = find_fmt(f);
 324         if (!fmt)
 325                 return -EINVAL;
 326
 327         field = &f->fmt.pix.field;
 328         if (*field == V4L2_FIELD_ANY)
 329                 *field = V4L2_FIELD_NONE;
 330         else if (*field != V4L2_FIELD_NONE)
 331                 return -EINVAL;
 332
 333         if (f->fmt.pix.width > MAX_WIDTH)
 334                 f->fmt.pix.width = MAX_WIDTH;
 335         if (f->fmt.pix.height > MAX_HEIGHT)
 336                 f->fmt.pix.height = MAX_HEIGHT;
 337
 338         if (f->fmt.pix.width < 1)
 339                 f->fmt.pix.width = 1;
 340         if (f->fmt.pix.height < 1)
 341                 f->fmt.pix.height = 1;
 342
 343         f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
 344         f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
 345         return 0;
 346 }
 347
 348 static int vidioc_s_fmt(struct file *file, void *prv, struct v4l2_format *f)
 349 {
 350         struct g2d_ctx *ctx = prv;
 351         struct g2d_dev *dev = ctx->dev;
 352         struct vb2_queue *vq;
 353         struct g2d_frame *frm;
 354         struct g2d_fmt *fmt;
 355         int ret = 0;
 356
 357         /* Adjust all values accordingly to the hardware capabilities
 358          * and chosen format. */
 359         ret = vidioc_try_fmt(file, prv, f);
 360         if (ret)
 361                 return ret;
 362         vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type);
 363         if (vb2_is_busy(vq)) {
 364                 v4l2_err(&dev->v4l2_dev, "queue (%d) bust\n", f->type);
 365                 return -EBUSY;
 366         }
 367         frm = get_frame(ctx, f->type);
 368         if (IS_ERR(frm))
 369                 return PTR_ERR(frm);
 370         fmt = find_fmt(f);
 371         if (!fmt)
 372                 return -EINVAL;
 373         frm->width      = f->fmt.pix.width;
 374         frm->height     = f->fmt.pix.height;
 375         frm->size       = f->fmt.pix.sizeimage;
 376         /* Reset crop settings */
 377         frm->o_width    = 0;
 378         frm->o_height   = 0;
 379         frm->c_width    = frm->width;
 380         frm->c_height   = frm->height;
 381         frm->right      = frm->width;
 382         frm->bottom     = frm->height;
 383         frm->fmt        = fmt;
 384         frm->stride     = f->fmt.pix.bytesperline;
 385         return 0;
 386 }
 387
 388 static unsigned int g2d_poll(struct file *file, struct poll_table_struct *wait)
 389 {
 390         struct g2d_ctx *ctx = fh2ctx(file->private_data);
 391         return v4l2_m2m_poll(file, ctx->m2m_ctx, wait);
 392 }
 393
 394 static int g2d_mmap(struct file *file, struct vm_area_struct *vma)
 395 {
 396         struct g2d_ctx *ctx = fh2ctx(file->private_data);
 397         return v4l2_m2m_mmap(file, ctx->m2m_ctx, vma);
 398 }
 399
 400 static int vidioc_reqbufs(struct file *file, void *priv,
 401                         struct v4l2_requestbuffers *reqbufs)
 402 {
 403         struct g2d_ctx *ctx = priv;
 404         return v4l2_m2m_reqbufs(file, ctx->m2m_ctx, reqbufs);
 405 }
 406
 407 static int vidioc_querybuf(struct file *file, void *priv,
 408                         struct v4l2_buffer *buf)
 409 {
 410         struct g2d_ctx *ctx = priv;
 411         return v4l2_m2m_querybuf(file, ctx->m2m_ctx, buf);
 412 }
 413
 414 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
 415 {
 416         struct g2d_ctx *ctx = priv;
 417         return v4l2_m2m_qbuf(file, ctx->m2m_ctx, buf);
 418 }
 419
 420 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
 421 {
 422         struct g2d_ctx *ctx = priv;
 423         return v4l2_m2m_dqbuf(file, ctx->m2m_ctx, buf);
 424 }
 425
 426
 427 static int vidioc_streamon(struct file *file, void *priv,
 428                                         enum v4l2_buf_type type)
 429 {
 430         struct g2d_ctx *ctx = priv;
 431         return v4l2_m2m_streamon(file, ctx->m2m_ctx, type);
 432 }
 433
 434 static int vidioc_streamoff(struct file *file, void *priv,
 435                                         enum v4l2_buf_type type)
 436 {
 437         struct g2d_ctx *ctx = priv;
 438         return v4l2_m2m_streamoff(file, ctx->m2m_ctx, type);
 439 }
 440
 441 static int vidioc_cropcap(struct file *file, void *priv,
 442                                         struct v4l2_cropcap *cr)
 443 {
 444         struct g2d_ctx *ctx = priv;
 445         struct g2d_frame *f;
 446
 447         f = get_frame(ctx, cr->type);
 448         if (IS_ERR(f))
 449                 return PTR_ERR(f);
 450
 451         cr->bounds.left         = 0;
 452         cr->bounds.top          = 0;
 453         cr->bounds.width        = f->width;
 454         cr->bounds.height       = f->height;
 455         cr->defrect             = cr->bounds;
 456         return 0;
 457 }
 458
 459 static int vidioc_g_crop(struct file *file, void *prv, struct v4l2_crop *cr)
 460 {
 461         struct g2d_ctx *ctx = prv;
 462         struct g2d_frame *f;
 463
 464         f = get_frame(ctx, cr->type);
 465         if (IS_ERR(f))
 466                 return PTR_ERR(f);
 467
 468         cr->c.left      = f->o_height;
 469         cr->c.top       = f->o_width;
 470         cr->c.width     = f->c_width;
 471         cr->c.height    = f->c_height;
 472         return 0;
 473 }
 474
 475 static int vidioc_try_crop(struct file *file, void *prv, struct v4l2_crop *cr)
 476 {
 477         struct g2d_ctx *ctx = prv;
 478         struct g2d_dev *dev = ctx->dev;
 479         struct g2d_frame *f;
 480
 481         f = get_frame(ctx, cr->type);
 482         if (IS_ERR(f))
 483                 return PTR_ERR(f);
 484
 485         if (cr->c.top < 0 || cr->c.left < 0) {
 486                 v4l2_err(&dev->v4l2_dev,
 487                         "doesn't support negative values for top & left\n");
 488                 return -EINVAL;
 489         }
 490
 491         return 0;
 492 }
 493
 494 static int vidioc_s_crop(struct file *file, void *prv, struct v4l2_crop *cr)
 495 {
 496         struct g2d_ctx *ctx = prv;
 497         struct g2d_frame *f;
 498         int ret;
 499
 500         ret = vidioc_try_crop(file, prv, cr);
 501         if (ret)
 502                 return ret;
 503         f = get_frame(ctx, cr->type);
 504         if (IS_ERR(f))
 505                 return PTR_ERR(f);
 506
 507         f->c_width      = cr->c.width;
 508         f->c_height     = cr->c.height;
 509         f->o_width      = cr->c.left;
 510         f->o_height     = cr->c.top;
 511         f->bottom       = f->o_height + f->c_height;
 512         f->right        = f->o_width + f->c_width;
 513         return 0;
 514 }
 515
 516 static void g2d_lock(void *prv)
 517 {
 518         struct g2d_ctx *ctx = prv;
 519         struct g2d_dev *dev = ctx->dev;
 520         mutex_lock(&dev->mutex);
 521 }
 522
 523 static void g2d_unlock(void *prv)
 524 {
 525         struct g2d_ctx *ctx = prv;
 526         struct g2d_dev *dev = ctx->dev;
 527         mutex_unlock(&dev->mutex);
 528 }
 529
 530 static void job_abort(void *prv)
 531 {
 532         struct g2d_ctx *ctx = prv;
 533         struct g2d_dev *dev = ctx->dev;
 534         int ret;
 535
 536         if (dev->curr == 0) /* No job currently running */
 537                 return;
 538
 539         ret = wait_event_timeout(dev->irq_queue,
 540                 dev->curr == 0,
 541                 msecs_to_jiffies(G2D_TIMEOUT));
 542 }
 543
 544 static void device_run(void *prv)
 545 {
 546         struct g2d_ctx *ctx = prv;
 547         struct g2d_dev *dev = ctx->dev;
 548         struct vb2_buffer *src, *dst;
 549         u32 cmd = 0;
 550
 551         dev->curr = ctx;
 552
 553         src = v4l2_m2m_next_src_buf(ctx->m2m_ctx);
 554         dst = v4l2_m2m_next_dst_buf(ctx->m2m_ctx);
 555
 556         clk_enable(dev->gate);
 557         g2d_reset(dev);
 558
 559         g2d_set_src_size(dev, &ctx->in);
 560         g2d_set_src_addr(dev, vb2_dma_contig_plane_dma_addr(src, 0));
 561
 562         g2d_set_dst_size(dev, &ctx->out);
 563         g2d_set_dst_addr(dev, vb2_dma_contig_plane_dma_addr(dst, 0));
 564
 565         g2d_set_rop4(dev, ctx->rop);
 566         if (ctx->in.c_width != ctx->out.c_width ||
 567                 ctx->in.c_height != ctx->out.c_height)
 568                 cmd |= g2d_cmd_stretch(1);
 569         g2d_set_cmd(dev, cmd);
 570         g2d_start(dev);
 571 }
 572
 573 static irqreturn_t g2d_isr(int irq, void *prv)
 574 {
 575         struct g2d_dev *dev = prv;
 576         struct g2d_ctx *ctx = dev->curr;
 577         struct vb2_buffer *src, *dst;
 578
 579         g2d_clear_int(dev);
 580         clk_disable(dev->gate);
 581
 582         BUG_ON(ctx == 0);
 583
 584         src = v4l2_m2m_src_buf_remove(ctx->m2m_ctx);
 585         dst = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx);
 586
 587         BUG_ON(src == 0);
 588         BUG_ON(dst == 0);
 589
 590         v4l2_m2m_buf_done(src, VB2_BUF_STATE_DONE);
 591         v4l2_m2m_buf_done(dst, VB2_BUF_STATE_DONE);
 592         v4l2_m2m_job_finish(dev->m2m_dev, ctx->m2m_ctx);
 593
 594         dev->curr = 0;
 595         wake_up(&dev->irq_queue);
 596         return IRQ_HANDLED;
 597 }
 598
 599 static const struct v4l2_file_operations g2d_fops = {
 600         .owner          = THIS_MODULE,
 601         .open           = g2d_open,
 602         .release        = g2d_release,
 603         .poll           = g2d_poll,
 604         .unlocked_ioctl = video_ioctl2,
 605         .mmap           = g2d_mmap,
 606 };
 607
 608 static const struct v4l2_ioctl_ops g2d_ioctl_ops = {
 609         .vidioc_querycap        = vidioc_querycap,
 610
 611         .vidioc_enum_fmt_vid_cap        = vidioc_enum_fmt,
 612         .vidioc_g_fmt_vid_cap           = vidioc_g_fmt,
 613         .vidioc_try_fmt_vid_cap         = vidioc_try_fmt,
 614         .vidioc_s_fmt_vid_cap           = vidioc_s_fmt,
 615
 616         .vidioc_enum_fmt_vid_out        = vidioc_enum_fmt,
 617         .vidioc_g_fmt_vid_out           = vidioc_g_fmt,
 618         .vidioc_try_fmt_vid_out         = vidioc_try_fmt,
 619         .vidioc_s_fmt_vid_out           = vidioc_s_fmt,
 620
 621         .vidioc_reqbufs                 = vidioc_reqbufs,
 622         .vidioc_querybuf                = vidioc_querybuf,
 623
 624         .vidioc_qbuf                    = vidioc_qbuf,
 625         .vidioc_dqbuf                   = vidioc_dqbuf,
 626
 627         .vidioc_streamon                = vidioc_streamon,
 628         .vidioc_streamoff               = vidioc_streamoff,
 629
 630         .vidioc_g_crop                  = vidioc_g_crop,
 631         .vidioc_s_crop                  = vidioc_s_crop,
 632         .vidioc_cropcap                 = vidioc_cropcap,
 633 };
 634
 635 static struct video_device g2d_videodev = {
 636         .name           = G2D_NAME,
 637         .fops           = &g2d_fops,
 638         .ioctl_ops      = &g2d_ioctl_ops,
 639         .minor          = -1,
 640         .release        = video_device_release,
 641 };
 642
 643 static struct v4l2_m2m_ops g2d_m2m_ops = {
 644         .device_run     = device_run,
 645         .job_abort      = job_abort,
 646         .lock           = g2d_lock,
 647         .unlock         = g2d_unlock,
 648 };
 649
 650 static int g2d_probe(struct platform_device *pdev)
 651 {
 652         struct g2d_dev *dev;
 653         struct video_device *vfd;
 654         struct resource *res;
 655         int ret = 0;
 656
 657         dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 658         if (!dev)
 659                 return -ENOMEM;
 660         spin_lock_init(&dev->irqlock);
 661         mutex_init(&dev->mutex);
 662         atomic_set(&dev->num_inst, 0);
 663         init_waitqueue_head(&dev->irq_queue);
 664
 665         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 666         if (!res) {
 667                 dev_err(&pdev->dev, "failed to find registers\n");
 668                 ret = -ENOENT;
 669                 goto free_dev;
 670         }
 671
 672         dev->res_regs = request_mem_region(res->start, resource_size(res),
 673                                                 dev_name(&pdev->dev));
 674
 675         if (!dev->res_regs) {
 676                 dev_err(&pdev->dev, "failed to obtain register region\n");
 677                 ret = -ENOENT;
 678                 goto free_dev;
 679         }
 680
 681         dev->regs = ioremap(res->start, resource_size(res));
 682         if (!dev->regs) {
 683                 dev_err(&pdev->dev, "failed to map registers\n");
 684                 ret = -ENOENT;
 685                 goto rel_res_regs;
 686         }
 687
 688         dev->clk = clk_get(&pdev->dev, "sclk_fimg2d");
 689         if (IS_ERR_OR_NULL(dev->clk)) {
 690                 dev_err(&pdev->dev, "failed to get g2d clock\n");
 691                 ret = -ENXIO;
 692                 goto unmap_regs;
 693         }
 694
 695         dev->gate = clk_get(&pdev->dev, "fimg2d");
 696         if (IS_ERR_OR_NULL(dev->gate)) {
 697                 dev_err(&pdev->dev, "failed to get g2d clock gate\n");
 698                 ret = -ENXIO;
 699                 goto put_clk;
 700         }
 701
 702         res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
 703         if (!res) {
 704                 dev_err(&pdev->dev, "failed to find IRQ\n");
 705                 ret = -ENXIO;
 706                 goto put_clk_gate;
 707         }
 708
 709         dev->irq = res->start;
 710
 711         ret = request_irq(dev->irq, g2d_isr, 0, pdev->name, dev);
 712         if (ret) {
 713                 dev_err(&pdev->dev, "failed to install IRQ\n");
 714                 goto put_clk_gate;
 715         }
 716
 717         dev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
 718         if (IS_ERR(dev->alloc_ctx)) {
 719                 ret = PTR_ERR(dev->alloc_ctx);
 720                 goto rel_irq;
 721         }
 722
 723         ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
 724         if (ret)
 725                 goto alloc_ctx_cleanup;
 726         vfd = video_device_alloc();
 727         if (!vfd) {
 728                 v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n");
 729                 ret = -ENOMEM;
 730                 goto unreg_v4l2_dev;
 731         }
 732         *vfd = g2d_videodev;
 733         vfd->lock = &dev->mutex;
 734         ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0);
 735         if (ret) {
 736                 v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
 737                 goto rel_vdev;
 738         }
 739         video_set_drvdata(vfd, dev);
 740         snprintf(vfd->name, sizeof(vfd->name), "%s", g2d_videodev.name);
 741         dev->vfd = vfd;
 742         v4l2_info(&dev->v4l2_dev, "device registered as /dev/video%d\n",
 743                                                                 vfd->num);
 744         platform_set_drvdata(pdev, dev);
 745         dev->m2m_dev = v4l2_m2m_init(&g2d_m2m_ops);
 746         if (IS_ERR(dev->m2m_dev)) {
 747                 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n");
 748                 ret = PTR_ERR(dev->m2m_dev);
 749                 goto unreg_video_dev;
 750         }
 751
 752         def_frame.stride = (def_frame.width * def_frame.fmt->depth) >> 3;
 753
 754         return 0;
 755
 756 unreg_video_dev:
 757         video_unregister_device(dev->vfd);
 758 rel_vdev:
 759         video_device_release(vfd);
 760 unreg_v4l2_dev:
 761         v4l2_device_unregister(&dev->v4l2_dev);
 762 alloc_ctx_cleanup:
 763         vb2_dma_contig_cleanup_ctx(dev->alloc_ctx);
 764 rel_irq:
 765         free_irq(dev->irq, dev);
 766 put_clk_gate:
 767         clk_put(dev->gate);
 768 put_clk:
 769         clk_put(dev->clk);
 770 unmap_regs:
 771         iounmap(dev->regs);
 772 rel_res_regs:
 773         release_resource(dev->res_regs);
 774 free_dev:
 775         kfree(dev);
 776         return ret;
 777 }
 778
 779 static int g2d_remove(struct platform_device *pdev)
 780 {
 781         struct g2d_dev *dev = (struct g2d_dev *)platform_get_drvdata(pdev);
 782
 783         v4l2_info(&dev->v4l2_dev, "Removing " G2D_NAME);
 784         v4l2_m2m_release(dev->m2m_dev);
 785         video_unregister_device(dev->vfd);
 786         v4l2_device_unregister(&dev->v4l2_dev);
 787         vb2_dma_contig_cleanup_ctx(dev->alloc_ctx);
 788         free_irq(dev->irq, dev);
 789         clk_put(dev->gate);
 790         clk_put(dev->clk);
 791         iounmap(dev->regs);
 792         release_resource(dev->res_regs);
 793         kfree(dev);
 794         return 0;
 795 }
 796
 797 static struct platform_driver g2d_pdrv = {
 798         .probe          = g2d_probe,
 799         .remove         = g2d_remove,
 800         .driver         = {
 801                 .name = G2D_NAME,
 802                 .owner = THIS_MODULE,
 803         },
 804 };
 805
 806 static void __exit g2d_exit(void)
 807 {
 808         platform_driver_unregister(&g2d_pdrv);
 809 };
 810
 811 static int  __init g2d_init(void)
 812 {
 813         int ret = 0;
 814
 815         ret = platform_driver_register(&g2d_pdrv);
 816         return ret;
 817 };
 818
 819 module_init(g2d_init);
 820 module_exit(g2d_exit);
 821
 822 MODULE_AUTHOR("Kamil Debski <k.debski@samsung.com>");
 823 MODULE_DESCRIPTION("S5P G2D 2d graphics accelerator driver");
 824 MODULE_LICENSE("GPL");