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

   1 /*
   2  * Samsung S5P G2D - 2D Graphics Accelerator Driver
   3  *
   4  * Copyright (c) 2011 Samsung Electronics Co., Ltd.
   5  * Kamil Debski, <k.debski@samsung.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by the
   9  * Free Software Foundation; either version 2 of the
  10  * License, or (at your option) any later version
  11  */
  12
  13 #include <linux/module.h>
  14 #include <linux/fs.h>
  15 #include <linux/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 #include <linux/of.h>
  22
  23 #include <linux/platform_device.h>
  24 #include <media/v4l2-mem2mem.h>
  25 #include <media/v4l2-device.h>
  26 #include <media/v4l2-ioctl.h>
  27 #include <media/videobuf2-core.h>
  28 #include <media/videobuf2-dma-contig.h>
  29
  30 #include "g2d.h"
  31 #include "g2d-regs.h"
  32
  33 #define fh2ctx(__fh) container_of(__fh, struct g2d_ctx, fh)
  34
  35 static struct g2d_fmt formats[] = {
  36         {
  37                 .name   = "XRGB_8888",
  38                 .fourcc = V4L2_PIX_FMT_RGB32,
  39                 .depth  = 32,
  40                 .hw     = COLOR_MODE(ORDER_XRGB, MODE_XRGB_8888),
  41         },
  42         {
  43                 .name   = "RGB_565",
  44                 .fourcc = V4L2_PIX_FMT_RGB565X,
  45                 .depth  = 16,
  46                 .hw     = COLOR_MODE(ORDER_XRGB, MODE_RGB_565),
  47         },
  48         {
  49                 .name   = "XRGB_1555",
  50                 .fourcc = V4L2_PIX_FMT_RGB555X,
  51                 .depth  = 16,
  52                 .hw     = COLOR_MODE(ORDER_XRGB, MODE_XRGB_1555),
  53         },
  54         {
  55                 .name   = "XRGB_4444",
  56                 .fourcc = V4L2_PIX_FMT_RGB444,
  57                 .depth  = 16,
  58                 .hw     = COLOR_MODE(ORDER_XRGB, MODE_XRGB_4444),
  59         },
  60         {
  61                 .name   = "PACKED_RGB_888",
  62                 .fourcc = V4L2_PIX_FMT_RGB24,
  63                 .depth  = 24,
  64                 .hw     = COLOR_MODE(ORDER_XRGB, MODE_PACKED_RGB_888),
  65         },
  66 };
  67 #define NUM_FORMATS ARRAY_SIZE(formats)
  68
  69 static struct g2d_frame def_frame = {
  70         .width          = DEFAULT_WIDTH,
  71         .height         = DEFAULT_HEIGHT,
  72         .c_width        = DEFAULT_WIDTH,
  73         .c_height       = DEFAULT_HEIGHT,
  74         .o_width        = 0,
  75         .o_height       = 0,
  76         .fmt            = &formats[0],
  77         .right          = DEFAULT_WIDTH,
  78         .bottom         = DEFAULT_HEIGHT,
  79 };
  80
  81 static struct g2d_fmt *find_fmt(struct v4l2_format *f)
  82 {
  83         unsigned int i;
  84         for (i = 0; i < NUM_FORMATS; i++) {
  85                 if (formats[i].fourcc == f->fmt.pix.pixelformat)
  86                         return &formats[i];
  87         }
  88         return NULL;
  89 }
  90
  91
  92 static struct g2d_frame *get_frame(struct g2d_ctx *ctx,
  93                                                         enum v4l2_buf_type type)
  94 {
  95         switch (type) {
  96         case V4L2_BUF_TYPE_VIDEO_OUTPUT:
  97                 return &ctx->in;
  98         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
  99                 return &ctx->out;
 100         default:
 101                 return ERR_PTR(-EINVAL);
 102         }
 103 }
 104
 105 static int g2d_queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt,
 106                            unsigned int *nbuffers, unsigned int *nplanes,
 107                            unsigned int sizes[], void *alloc_ctxs[])
 108 {
 109         struct g2d_ctx *ctx = vb2_get_drv_priv(vq);
 110         struct g2d_frame *f = get_frame(ctx, vq->type);
 111
 112         if (IS_ERR(f))
 113                 return PTR_ERR(f);
 114
 115         sizes[0] = f->size;
 116         *nplanes = 1;
 117         alloc_ctxs[0] = ctx->dev->alloc_ctx;
 118
 119         if (*nbuffers == 0)
 120                 *nbuffers = 1;
 121
 122         return 0;
 123 }
 124
 125 static int g2d_buf_prepare(struct vb2_buffer *vb)
 126 {
 127         struct g2d_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
 128         struct g2d_frame *f = get_frame(ctx, vb->vb2_queue->type);
 129
 130         if (IS_ERR(f))
 131                 return PTR_ERR(f);
 132         vb2_set_plane_payload(vb, 0, f->size);
 133         return 0;
 134 }
 135
 136 static void g2d_buf_queue(struct vb2_buffer *vb)
 137 {
 138         struct g2d_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
 139         v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vb);
 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         src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
 155         src_vq->io_modes = VB2_MMAP | VB2_USERPTR;
 156         src_vq->drv_priv = ctx;
 157         src_vq->ops = &g2d_qops;
 158         src_vq->mem_ops = &vb2_dma_contig_memops;
 159         src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
 160         src_vq->timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_COPY;
 161         src_vq->lock = &ctx->dev->mutex;
 162
 163         ret = vb2_queue_init(src_vq);
 164         if (ret)
 165                 return ret;
 166
 167         dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 168         dst_vq->io_modes = VB2_MMAP | VB2_USERPTR;
 169         dst_vq->drv_priv = ctx;
 170         dst_vq->ops = &g2d_qops;
 171         dst_vq->mem_ops = &vb2_dma_contig_memops;
 172         dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
 173         dst_vq->timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_COPY;
 174         dst_vq->lock = &ctx->dev->mutex;
 175
 176         return vb2_queue_init(dst_vq);
 177 }
 178
 179 static int g2d_s_ctrl(struct v4l2_ctrl *ctrl)
 180 {
 181         struct g2d_ctx *ctx = container_of(ctrl->handler, struct g2d_ctx,
 182                                                                 ctrl_handler);
 183         unsigned long flags;
 184
 185         spin_lock_irqsave(&ctx->dev->ctrl_lock, flags);
 186         switch (ctrl->id) {
 187         case V4L2_CID_COLORFX:
 188                 if (ctrl->val == V4L2_COLORFX_NEGATIVE)
 189                         ctx->rop = ROP4_INVERT;
 190                 else
 191                         ctx->rop = ROP4_COPY;
 192                 break;
 193
 194         case V4L2_CID_HFLIP:
 195                 ctx->flip = ctx->ctrl_hflip->val | (ctx->ctrl_vflip->val << 1);
 196                 break;
 197
 198         }
 199         spin_unlock_irqrestore(&ctx->dev->ctrl_lock, flags);
 200         return 0;
 201 }
 202
 203 static const struct v4l2_ctrl_ops g2d_ctrl_ops = {
 204         .s_ctrl         = g2d_s_ctrl,
 205 };
 206
 207 static int g2d_setup_ctrls(struct g2d_ctx *ctx)
 208 {
 209         struct g2d_dev *dev = ctx->dev;
 210
 211         v4l2_ctrl_handler_init(&ctx->ctrl_handler, 3);
 212
 213         ctx->ctrl_hflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, &g2d_ctrl_ops,
 214                                                 V4L2_CID_HFLIP, 0, 1, 1, 0);
 215
 216         ctx->ctrl_vflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, &g2d_ctrl_ops,
 217                                                 V4L2_CID_VFLIP, 0, 1, 1, 0);
 218
 219         v4l2_ctrl_new_std_menu(
 220                 &ctx->ctrl_handler,
 221                 &g2d_ctrl_ops,
 222                 V4L2_CID_COLORFX,
 223                 V4L2_COLORFX_NEGATIVE,
 224                 ~((1 << V4L2_COLORFX_NONE) | (1 << V4L2_COLORFX_NEGATIVE)),
 225                 V4L2_COLORFX_NONE);
 226
 227         if (ctx->ctrl_handler.error) {
 228                 int err = ctx->ctrl_handler.error;
 229                 v4l2_err(&dev->v4l2_dev, "g2d_setup_ctrls failed\n");
 230                 v4l2_ctrl_handler_free(&ctx->ctrl_handler);
 231                 return err;
 232         }
 233
 234         v4l2_ctrl_cluster(2, &ctx->ctrl_hflip);
 235
 236         return 0;
 237 }
 238
 239 static int g2d_open(struct file *file)
 240 {
 241         struct g2d_dev *dev = video_drvdata(file);
 242         struct g2d_ctx *ctx = NULL;
 243         int ret = 0;
 244
 245         ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
 246         if (!ctx)
 247                 return -ENOMEM;
 248         ctx->dev = dev;
 249         /* Set default formats */
 250         ctx->in         = def_frame;
 251         ctx->out        = def_frame;
 252
 253         if (mutex_lock_interruptible(&dev->mutex)) {
 254                 kfree(ctx);
 255                 return -ERESTARTSYS;
 256         }
 257         ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx, &queue_init);
 258         if (IS_ERR(ctx->fh.m2m_ctx)) {
 259                 ret = PTR_ERR(ctx->fh.m2m_ctx);
 260                 mutex_unlock(&dev->mutex);
 261                 kfree(ctx);
 262                 return ret;
 263         }
 264         v4l2_fh_init(&ctx->fh, video_devdata(file));
 265         file->private_data = &ctx->fh;
 266         v4l2_fh_add(&ctx->fh);
 267
 268         g2d_setup_ctrls(ctx);
 269
 270         /* Write the default values to the ctx struct */
 271         v4l2_ctrl_handler_setup(&ctx->ctrl_handler);
 272
 273         ctx->fh.ctrl_handler = &ctx->ctrl_handler;
 274         mutex_unlock(&dev->mutex);
 275
 276         v4l2_info(&dev->v4l2_dev, "instance opened\n");
 277         return 0;
 278 }
 279
 280 static int g2d_release(struct file *file)
 281 {
 282         struct g2d_dev *dev = video_drvdata(file);
 283         struct g2d_ctx *ctx = fh2ctx(file->private_data);
 284
 285         v4l2_ctrl_handler_free(&ctx->ctrl_handler);
 286         v4l2_fh_del(&ctx->fh);
 287         v4l2_fh_exit(&ctx->fh);
 288         kfree(ctx);
 289         v4l2_info(&dev->v4l2_dev, "instance closed\n");
 290         return 0;
 291 }
 292
 293
 294 static int vidioc_querycap(struct file *file, void *priv,
 295                                 struct v4l2_capability *cap)
 296 {
 297         strncpy(cap->driver, G2D_NAME, sizeof(cap->driver) - 1);
 298         strncpy(cap->card, G2D_NAME, sizeof(cap->card) - 1);
 299         cap->bus_info[0] = 0;
 300         cap->version = KERNEL_VERSION(1, 0, 0);
 301         /*
 302          * This is only a mem-to-mem video device. The capture and output
 303          * device capability flags are left only for backward compatibility
 304          * and are scheduled for removal.
 305          */
 306         cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT |
 307                             V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
 308         return 0;
 309 }
 310
 311 static int vidioc_enum_fmt(struct file *file, void *prv, struct v4l2_fmtdesc *f)
 312 {
 313         struct g2d_fmt *fmt;
 314         if (f->index >= NUM_FORMATS)
 315                 return -EINVAL;
 316         fmt = &formats[f->index];
 317         f->pixelformat = fmt->fourcc;
 318         strncpy(f->description, fmt->name, sizeof(f->description) - 1);
 319         return 0;
 320 }
 321
 322 static int vidioc_g_fmt(struct file *file, void *prv, struct v4l2_format *f)
 323 {
 324         struct g2d_ctx *ctx = prv;
 325         struct vb2_queue *vq;
 326         struct g2d_frame *frm;
 327
 328         vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
 329         if (!vq)
 330                 return -EINVAL;
 331         frm = get_frame(ctx, f->type);
 332         if (IS_ERR(frm))
 333                 return PTR_ERR(frm);
 334
 335         f->fmt.pix.width                = frm->width;
 336         f->fmt.pix.height               = frm->height;
 337         f->fmt.pix.field                = V4L2_FIELD_NONE;
 338         f->fmt.pix.pixelformat          = frm->fmt->fourcc;
 339         f->fmt.pix.bytesperline         = (frm->width * frm->fmt->depth) >> 3;
 340         f->fmt.pix.sizeimage            = frm->size;
 341         return 0;
 342 }
 343
 344 static int vidioc_try_fmt(struct file *file, void *prv, struct v4l2_format *f)
 345 {
 346         struct g2d_fmt *fmt;
 347         enum v4l2_field *field;
 348
 349         fmt = find_fmt(f);
 350         if (!fmt)
 351                 return -EINVAL;
 352
 353         field = &f->fmt.pix.field;
 354         if (*field == V4L2_FIELD_ANY)
 355                 *field = V4L2_FIELD_NONE;
 356         else if (*field != V4L2_FIELD_NONE)
 357                 return -EINVAL;
 358
 359         if (f->fmt.pix.width > MAX_WIDTH)
 360                 f->fmt.pix.width = MAX_WIDTH;
 361         if (f->fmt.pix.height > MAX_HEIGHT)
 362                 f->fmt.pix.height = MAX_HEIGHT;
 363
 364         if (f->fmt.pix.width < 1)
 365                 f->fmt.pix.width = 1;
 366         if (f->fmt.pix.height < 1)
 367                 f->fmt.pix.height = 1;
 368
 369         f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
 370         f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
 371         return 0;
 372 }
 373
 374 static int vidioc_s_fmt(struct file *file, void *prv, struct v4l2_format *f)
 375 {
 376         struct g2d_ctx *ctx = prv;
 377         struct g2d_dev *dev = ctx->dev;
 378         struct vb2_queue *vq;
 379         struct g2d_frame *frm;
 380         struct g2d_fmt *fmt;
 381         int ret = 0;
 382
 383         /* Adjust all values accordingly to the hardware capabilities
 384          * and chosen format. */
 385         ret = vidioc_try_fmt(file, prv, f);
 386         if (ret)
 387                 return ret;
 388         vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
 389         if (vb2_is_busy(vq)) {
 390                 v4l2_err(&dev->v4l2_dev, "queue (%d) bust\n", f->type);
 391                 return -EBUSY;
 392         }
 393         frm = get_frame(ctx, f->type);
 394         if (IS_ERR(frm))
 395                 return PTR_ERR(frm);
 396         fmt = find_fmt(f);
 397         if (!fmt)
 398                 return -EINVAL;
 399         frm->width      = f->fmt.pix.width;
 400         frm->height     = f->fmt.pix.height;
 401         frm->size       = f->fmt.pix.sizeimage;
 402         /* Reset crop settings */
 403         frm->o_width    = 0;
 404         frm->o_height   = 0;
 405         frm->c_width    = frm->width;
 406         frm->c_height   = frm->height;
 407         frm->right      = frm->width;
 408         frm->bottom     = frm->height;
 409         frm->fmt        = fmt;
 410         frm->stride     = f->fmt.pix.bytesperline;
 411         return 0;
 412 }
 413
 414 static int vidioc_cropcap(struct file *file, void *priv,
 415                                         struct v4l2_cropcap *cr)
 416 {
 417         struct g2d_ctx *ctx = priv;
 418         struct g2d_frame *f;
 419
 420         f = get_frame(ctx, cr->type);
 421         if (IS_ERR(f))
 422                 return PTR_ERR(f);
 423
 424         cr->bounds.left         = 0;
 425         cr->bounds.top          = 0;
 426         cr->bounds.width        = f->width;
 427         cr->bounds.height       = f->height;
 428         cr->defrect             = cr->bounds;
 429         return 0;
 430 }
 431
 432 static int vidioc_g_crop(struct file *file, void *prv, struct v4l2_crop *cr)
 433 {
 434         struct g2d_ctx *ctx = prv;
 435         struct g2d_frame *f;
 436
 437         f = get_frame(ctx, cr->type);
 438         if (IS_ERR(f))
 439                 return PTR_ERR(f);
 440
 441         cr->c.left      = f->o_height;
 442         cr->c.top       = f->o_width;
 443         cr->c.width     = f->c_width;
 444         cr->c.height    = f->c_height;
 445         return 0;
 446 }
 447
 448 static int vidioc_try_crop(struct file *file, void *prv, const struct v4l2_crop *cr)
 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, cr->type);
 455         if (IS_ERR(f))
 456                 return PTR_ERR(f);
 457
 458         if (cr->c.top < 0 || cr->c.left < 0) {
 459                 v4l2_err(&dev->v4l2_dev,
 460                         "doesn't support negative values for top & left\n");
 461                 return -EINVAL;
 462         }
 463
 464         return 0;
 465 }
 466
 467 static int vidioc_s_crop(struct file *file, void *prv, const struct v4l2_crop *cr)
 468 {
 469         struct g2d_ctx *ctx = prv;
 470         struct g2d_frame *f;
 471         int ret;
 472
 473         ret = vidioc_try_crop(file, prv, cr);
 474         if (ret)
 475                 return ret;
 476         f = get_frame(ctx, cr->type);
 477         if (IS_ERR(f))
 478                 return PTR_ERR(f);
 479
 480         f->c_width      = cr->c.width;
 481         f->c_height     = cr->c.height;
 482         f->o_width      = cr->c.left;
 483         f->o_height     = cr->c.top;
 484         f->bottom       = f->o_height + f->c_height;
 485         f->right        = f->o_width + f->c_width;
 486         return 0;
 487 }
 488
 489 static void job_abort(void *prv)
 490 {
 491         struct g2d_ctx *ctx = prv;
 492         struct g2d_dev *dev = ctx->dev;
 493         int ret;
 494
 495         if (dev->curr == NULL) /* No job currently running */
 496                 return;
 497
 498         ret = wait_event_timeout(dev->irq_queue,
 499                 dev->curr == NULL,
 500                 msecs_to_jiffies(G2D_TIMEOUT));
 501 }
 502
 503 static void device_run(void *prv)
 504 {
 505         struct g2d_ctx *ctx = prv;
 506         struct g2d_dev *dev = ctx->dev;
 507         struct vb2_buffer *src, *dst;
 508         unsigned long flags;
 509         u32 cmd = 0;
 510
 511         dev->curr = ctx;
 512
 513         src = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
 514         dst = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
 515
 516         clk_enable(dev->gate);
 517         g2d_reset(dev);
 518
 519         spin_lock_irqsave(&dev->ctrl_lock, flags);
 520
 521         g2d_set_src_size(dev, &ctx->in);
 522         g2d_set_src_addr(dev, vb2_dma_contig_plane_dma_addr(src, 0));
 523
 524         g2d_set_dst_size(dev, &ctx->out);
 525         g2d_set_dst_addr(dev, vb2_dma_contig_plane_dma_addr(dst, 0));
 526
 527         g2d_set_rop4(dev, ctx->rop);
 528         g2d_set_flip(dev, ctx->flip);
 529
 530         if (ctx->in.c_width != ctx->out.c_width ||
 531                 ctx->in.c_height != ctx->out.c_height) {
 532                 if (dev->variant->hw_rev == TYPE_G2D_3X)
 533                         cmd |= CMD_V3_ENABLE_STRETCH;
 534                 else
 535                         g2d_set_v41_stretch(dev, &ctx->in, &ctx->out);
 536         }
 537
 538         g2d_set_cmd(dev, cmd);
 539         g2d_start(dev);
 540
 541         spin_unlock_irqrestore(&dev->ctrl_lock, flags);
 542 }
 543
 544 static irqreturn_t g2d_isr(int irq, void *prv)
 545 {
 546         struct g2d_dev *dev = prv;
 547         struct g2d_ctx *ctx = dev->curr;
 548         struct vb2_buffer *src, *dst;
 549
 550         g2d_clear_int(dev);
 551         clk_disable(dev->gate);
 552
 553         BUG_ON(ctx == NULL);
 554
 555         src = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
 556         dst = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
 557
 558         BUG_ON(src == NULL);
 559         BUG_ON(dst == NULL);
 560
 561         dst->v4l2_buf.timecode = src->v4l2_buf.timecode;
 562         dst->v4l2_buf.timestamp = src->v4l2_buf.timestamp;
 563
 564         v4l2_m2m_buf_done(src, VB2_BUF_STATE_DONE);
 565         v4l2_m2m_buf_done(dst, VB2_BUF_STATE_DONE);
 566         v4l2_m2m_job_finish(dev->m2m_dev, ctx->fh.m2m_ctx);
 567
 568         dev->curr = NULL;
 569         wake_up(&dev->irq_queue);
 570         return IRQ_HANDLED;
 571 }
 572
 573 static const struct v4l2_file_operations g2d_fops = {
 574         .owner          = THIS_MODULE,
 575         .open           = g2d_open,
 576         .release        = g2d_release,
 577         .poll           = v4l2_m2m_fop_poll,
 578         .unlocked_ioctl = video_ioctl2,
 579         .mmap           = v4l2_m2m_fop_mmap,
 580 };
 581
 582 static const struct v4l2_ioctl_ops g2d_ioctl_ops = {
 583         .vidioc_querycap        = vidioc_querycap,
 584
 585         .vidioc_enum_fmt_vid_cap        = vidioc_enum_fmt,
 586         .vidioc_g_fmt_vid_cap           = vidioc_g_fmt,
 587         .vidioc_try_fmt_vid_cap         = vidioc_try_fmt,
 588         .vidioc_s_fmt_vid_cap           = vidioc_s_fmt,
 589
 590         .vidioc_enum_fmt_vid_out        = vidioc_enum_fmt,
 591         .vidioc_g_fmt_vid_out           = vidioc_g_fmt,
 592         .vidioc_try_fmt_vid_out         = vidioc_try_fmt,
 593         .vidioc_s_fmt_vid_out           = vidioc_s_fmt,
 594
 595         .vidioc_reqbufs                 = v4l2_m2m_ioctl_reqbufs,
 596         .vidioc_querybuf                = v4l2_m2m_ioctl_querybuf,
 597         .vidioc_qbuf                    = v4l2_m2m_ioctl_qbuf,
 598         .vidioc_dqbuf                   = v4l2_m2m_ioctl_dqbuf,
 599
 600         .vidioc_streamon                = v4l2_m2m_ioctl_streamon,
 601         .vidioc_streamoff               = v4l2_m2m_ioctl_streamoff,
 602
 603         .vidioc_g_crop                  = vidioc_g_crop,
 604         .vidioc_s_crop                  = vidioc_s_crop,
 605         .vidioc_cropcap                 = vidioc_cropcap,
 606 };
 607
 608 static struct video_device g2d_videodev = {
 609         .name           = G2D_NAME,
 610         .fops           = &g2d_fops,
 611         .ioctl_ops      = &g2d_ioctl_ops,
 612         .minor          = -1,
 613         .release        = video_device_release,
 614         .vfl_dir        = VFL_DIR_M2M,
 615 };
 616
 617 static struct v4l2_m2m_ops g2d_m2m_ops = {
 618         .device_run     = device_run,
 619         .job_abort      = job_abort,
 620 };
 621
 622 static const struct of_device_id exynos_g2d_match[];
 623
 624 static int g2d_probe(struct platform_device *pdev)
 625 {
 626         struct g2d_dev *dev;
 627         struct video_device *vfd;
 628         struct resource *res;
 629         const struct of_device_id *of_id;
 630         int ret = 0;
 631
 632         dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
 633         if (!dev)
 634                 return -ENOMEM;
 635
 636         spin_lock_init(&dev->ctrl_lock);
 637         mutex_init(&dev->mutex);
 638         atomic_set(&dev->num_inst, 0);
 639         init_waitqueue_head(&dev->irq_queue);
 640
 641         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 642
 643         dev->regs = devm_ioremap_resource(&pdev->dev, res);
 644         if (IS_ERR(dev->regs))
 645                 return PTR_ERR(dev->regs);
 646
 647         dev->clk = clk_get(&pdev->dev, "sclk_fimg2d");
 648         if (IS_ERR(dev->clk)) {
 649                 dev_err(&pdev->dev, "failed to get g2d clock\n");
 650                 return -ENXIO;
 651         }
 652
 653         ret = clk_prepare(dev->clk);
 654         if (ret) {
 655                 dev_err(&pdev->dev, "failed to prepare g2d clock\n");
 656                 goto put_clk;
 657         }
 658
 659         dev->gate = clk_get(&pdev->dev, "fimg2d");
 660         if (IS_ERR(dev->gate)) {
 661                 dev_err(&pdev->dev, "failed to get g2d clock gate\n");
 662                 ret = -ENXIO;
 663                 goto unprep_clk;
 664         }
 665
 666         ret = clk_prepare(dev->gate);
 667         if (ret) {
 668                 dev_err(&pdev->dev, "failed to prepare g2d clock gate\n");
 669                 goto put_clk_gate;
 670         }
 671
 672         res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
 673         if (!res) {
 674                 dev_err(&pdev->dev, "failed to find IRQ\n");
 675                 ret = -ENXIO;
 676                 goto unprep_clk_gate;
 677         }
 678
 679         dev->irq = res->start;
 680
 681         ret = devm_request_irq(&pdev->dev, dev->irq, g2d_isr,
 682                                                 0, pdev->name, dev);
 683         if (ret) {
 684                 dev_err(&pdev->dev, "failed to install IRQ\n");
 685                 goto put_clk_gate;
 686         }
 687
 688         dev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
 689         if (IS_ERR(dev->alloc_ctx)) {
 690                 ret = PTR_ERR(dev->alloc_ctx);
 691                 goto unprep_clk_gate;
 692         }
 693
 694         ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
 695         if (ret)
 696                 goto alloc_ctx_cleanup;
 697         vfd = video_device_alloc();
 698         if (!vfd) {
 699                 v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n");
 700                 ret = -ENOMEM;
 701                 goto unreg_v4l2_dev;
 702         }
 703         *vfd = g2d_videodev;
 704         vfd->lock = &dev->mutex;
 705         vfd->v4l2_dev = &dev->v4l2_dev;
 706         ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0);
 707         if (ret) {
 708                 v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
 709                 goto rel_vdev;
 710         }
 711         video_set_drvdata(vfd, dev);
 712         snprintf(vfd->name, sizeof(vfd->name), "%s", g2d_videodev.name);
 713         dev->vfd = vfd;
 714         v4l2_info(&dev->v4l2_dev, "device registered as /dev/video%d\n",
 715                                                                 vfd->num);
 716         platform_set_drvdata(pdev, dev);
 717         dev->m2m_dev = v4l2_m2m_init(&g2d_m2m_ops);
 718         if (IS_ERR(dev->m2m_dev)) {
 719                 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n");
 720                 ret = PTR_ERR(dev->m2m_dev);
 721                 goto unreg_video_dev;
 722         }
 723
 724         def_frame.stride = (def_frame.width * def_frame.fmt->depth) >> 3;
 725
 726         if (!pdev->dev.of_node) {
 727                 dev->variant = g2d_get_drv_data(pdev);
 728         } else {
 729                 of_id = of_match_node(exynos_g2d_match, pdev->dev.of_node);
 730                 if (!of_id) {
 731                         ret = -ENODEV;
 732                         goto unreg_video_dev;
 733                 }
 734                 dev->variant = (struct g2d_variant *)of_id->data;
 735         }
 736
 737         return 0;
 738
 739 unreg_video_dev:
 740         video_unregister_device(dev->vfd);
 741 rel_vdev:
 742         video_device_release(vfd);
 743 unreg_v4l2_dev:
 744         v4l2_device_unregister(&dev->v4l2_dev);
 745 alloc_ctx_cleanup:
 746         vb2_dma_contig_cleanup_ctx(dev->alloc_ctx);
 747 unprep_clk_gate:
 748         clk_unprepare(dev->gate);
 749 put_clk_gate:
 750         clk_put(dev->gate);
 751 unprep_clk:
 752         clk_unprepare(dev->clk);
 753 put_clk:
 754         clk_put(dev->clk);
 755
 756         return ret;
 757 }
 758
 759 static int g2d_remove(struct platform_device *pdev)
 760 {
 761         struct g2d_dev *dev = platform_get_drvdata(pdev);
 762
 763         v4l2_info(&dev->v4l2_dev, "Removing " G2D_NAME);
 764         v4l2_m2m_release(dev->m2m_dev);
 765         video_unregister_device(dev->vfd);
 766         v4l2_device_unregister(&dev->v4l2_dev);
 767         vb2_dma_contig_cleanup_ctx(dev->alloc_ctx);
 768         clk_unprepare(dev->gate);
 769         clk_put(dev->gate);
 770         clk_unprepare(dev->clk);
 771         clk_put(dev->clk);
 772         return 0;
 773 }
 774
 775 static struct g2d_variant g2d_drvdata_v3x = {
 776         .hw_rev = TYPE_G2D_3X, /* Revision 3.0 for S5PV210 and Exynos4210 */
 777 };
 778
 779 static struct g2d_variant g2d_drvdata_v4x = {
 780         .hw_rev = TYPE_G2D_4X, /* Revision 4.1 for Exynos4X12 and Exynos5 */
 781 };
 782
 783 static const struct of_device_id exynos_g2d_match[] = {
 784         {
 785                 .compatible = "samsung,s5pv210-g2d",
 786                 .data = &g2d_drvdata_v3x,
 787         }, {
 788                 .compatible = "samsung,exynos4212-g2d",
 789                 .data = &g2d_drvdata_v4x,
 790         },
 791         {},
 792 };
 793 MODULE_DEVICE_TABLE(of, exynos_g2d_match);
 794
 795 static struct platform_device_id g2d_driver_ids[] = {
 796         {
 797                 .name = "s5p-g2d",
 798                 .driver_data = (unsigned long)&g2d_drvdata_v3x,
 799         }, {
 800                 .name = "s5p-g2d-v4x",
 801                 .driver_data = (unsigned long)&g2d_drvdata_v4x,
 802         },
 803         {},
 804 };
 805 MODULE_DEVICE_TABLE(platform, g2d_driver_ids);
 806
 807 static struct platform_driver g2d_pdrv = {
 808         .probe          = g2d_probe,
 809         .remove         = g2d_remove,
 810         .id_table       = g2d_driver_ids,
 811         .driver         = {
 812                 .name = G2D_NAME,
 813                 .owner = THIS_MODULE,
 814                 .of_match_table = exynos_g2d_match,
 815         },
 816 };
 817
 818 module_platform_driver(g2d_pdrv);
 819
 820 MODULE_AUTHOR("Kamil Debski <k.debski@samsung.com>");
 821 MODULE_DESCRIPTION("S5P G2D 2d graphics accelerator driver");
 822 MODULE_LICENSE("GPL");