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/timer.h>
  16 #include <linux/sched.h>
  17 #include <linux/slab.h>
  18 #include <linux/clk.h>
  19 #include <linux/interrupt.h>
  20 #include <linux/of.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-v4l2.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 static 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 static 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,
 105                            unsigned int *nbuffers, unsigned int *nplanes,
 106                            unsigned int sizes[], struct device *alloc_devs[])
 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
 117         if (*nbuffers == 0)
 118                 *nbuffers = 1;
 119
 120         return 0;
 121 }
 122
 123 static int g2d_buf_prepare(struct vb2_buffer *vb)
 124 {
 125         struct g2d_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
 126         struct g2d_frame *f = get_frame(ctx, vb->vb2_queue->type);
 127
 128         if (IS_ERR(f))
 129                 return PTR_ERR(f);
 130         vb2_set_plane_payload(vb, 0, f->size);
 131         return 0;
 132 }
 133
 134 static void g2d_buf_queue(struct vb2_buffer *vb)
 135 {
 136         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 137         struct g2d_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
 138         v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
 139 }
 140
 141 static const struct vb2_ops g2d_qops = {
 142         .queue_setup    = g2d_queue_setup,
 143         .buf_prepare    = g2d_buf_prepare,
 144         .buf_queue      = g2d_buf_queue,
 145         .wait_prepare   = vb2_ops_wait_prepare,
 146         .wait_finish    = vb2_ops_wait_finish,
 147 };
 148
 149 static int queue_init(void *priv, struct vb2_queue *src_vq,
 150                                                 struct vb2_queue *dst_vq)
 151 {
 152         struct g2d_ctx *ctx = priv;
 153         int ret;
 154
 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         src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
 162         src_vq->lock = &ctx->dev->mutex;
 163         src_vq->dev = ctx->dev->v4l2_dev.dev;
 164
 165         ret = vb2_queue_init(src_vq);
 166         if (ret)
 167                 return ret;
 168
 169         dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 170         dst_vq->io_modes = VB2_MMAP | VB2_USERPTR;
 171         dst_vq->drv_priv = ctx;
 172         dst_vq->ops = &g2d_qops;
 173         dst_vq->mem_ops = &vb2_dma_contig_memops;
 174         dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
 175         dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
 176         dst_vq->lock = &ctx->dev->mutex;
 177         dst_vq->dev = ctx->dev->v4l2_dev.dev;
 178
 179         return vb2_queue_init(dst_vq);
 180 }
 181
 182 static int g2d_s_ctrl(struct v4l2_ctrl *ctrl)
 183 {
 184         struct g2d_ctx *ctx = container_of(ctrl->handler, struct g2d_ctx,
 185                                                                 ctrl_handler);
 186         unsigned long flags;
 187
 188         spin_lock_irqsave(&ctx->dev->ctrl_lock, flags);
 189         switch (ctrl->id) {
 190         case V4L2_CID_COLORFX:
 191                 if (ctrl->val == V4L2_COLORFX_NEGATIVE)
 192                         ctx->rop = ROP4_INVERT;
 193                 else
 194                         ctx->rop = ROP4_COPY;
 195                 break;
 196
 197         case V4L2_CID_HFLIP:
 198                 ctx->flip = ctx->ctrl_hflip->val | (ctx->ctrl_vflip->val << 1);
 199                 break;
 200
 201         }
 202         spin_unlock_irqrestore(&ctx->dev->ctrl_lock, flags);
 203         return 0;
 204 }
 205
 206 static const struct v4l2_ctrl_ops g2d_ctrl_ops = {
 207         .s_ctrl         = g2d_s_ctrl,
 208 };
 209
 210 static int g2d_setup_ctrls(struct g2d_ctx *ctx)
 211 {
 212         struct g2d_dev *dev = ctx->dev;
 213
 214         v4l2_ctrl_handler_init(&ctx->ctrl_handler, 3);
 215
 216         ctx->ctrl_hflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, &g2d_ctrl_ops,
 217                                                 V4L2_CID_HFLIP, 0, 1, 1, 0);
 218
 219         ctx->ctrl_vflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, &g2d_ctrl_ops,
 220                                                 V4L2_CID_VFLIP, 0, 1, 1, 0);
 221
 222         v4l2_ctrl_new_std_menu(
 223                 &ctx->ctrl_handler,
 224                 &g2d_ctrl_ops,
 225                 V4L2_CID_COLORFX,
 226                 V4L2_COLORFX_NEGATIVE,
 227                 ~((1 << V4L2_COLORFX_NONE) | (1 << V4L2_COLORFX_NEGATIVE)),
 228                 V4L2_COLORFX_NONE);
 229
 230         if (ctx->ctrl_handler.error) {
 231                 int err = ctx->ctrl_handler.error;
 232                 v4l2_err(&dev->v4l2_dev, "g2d_setup_ctrls failed\n");
 233                 v4l2_ctrl_handler_free(&ctx->ctrl_handler);
 234                 return err;
 235         }
 236
 237         v4l2_ctrl_cluster(2, &ctx->ctrl_hflip);
 238
 239         return 0;
 240 }
 241
 242 static int g2d_open(struct file *file)
 243 {
 244         struct g2d_dev *dev = video_drvdata(file);
 245         struct g2d_ctx *ctx = NULL;
 246         int ret = 0;
 247
 248         ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
 249         if (!ctx)
 250                 return -ENOMEM;
 251         ctx->dev = dev;
 252         /* Set default formats */
 253         ctx->in         = def_frame;
 254         ctx->out        = def_frame;
 255
 256         if (mutex_lock_interruptible(&dev->mutex)) {
 257                 kfree(ctx);
 258                 return -ERESTARTSYS;
 259         }
 260         ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx, &queue_init);
 261         if (IS_ERR(ctx->fh.m2m_ctx)) {
 262                 ret = PTR_ERR(ctx->fh.m2m_ctx);
 263                 mutex_unlock(&dev->mutex);
 264                 kfree(ctx);
 265                 return ret;
 266         }
 267         v4l2_fh_init(&ctx->fh, video_devdata(file));
 268         file->private_data = &ctx->fh;
 269         v4l2_fh_add(&ctx->fh);
 270
 271         g2d_setup_ctrls(ctx);
 272
 273         /* Write the default values to the ctx struct */
 274         v4l2_ctrl_handler_setup(&ctx->ctrl_handler);
 275
 276         ctx->fh.ctrl_handler = &ctx->ctrl_handler;
 277         mutex_unlock(&dev->mutex);
 278
 279         v4l2_info(&dev->v4l2_dev, "instance opened\n");
 280         return 0;
 281 }
 282
 283 static int g2d_release(struct file *file)
 284 {
 285         struct g2d_dev *dev = video_drvdata(file);
 286         struct g2d_ctx *ctx = fh2ctx(file->private_data);
 287
 288         v4l2_ctrl_handler_free(&ctx->ctrl_handler);
 289         v4l2_fh_del(&ctx->fh);
 290         v4l2_fh_exit(&ctx->fh);
 291         kfree(ctx);
 292         v4l2_info(&dev->v4l2_dev, "instance closed\n");
 293         return 0;
 294 }
 295
 296
 297 static int vidioc_querycap(struct file *file, void *priv,
 298                                 struct v4l2_capability *cap)
 299 {
 300         strncpy(cap->driver, G2D_NAME, sizeof(cap->driver) - 1);
 301         strncpy(cap->card, G2D_NAME, sizeof(cap->card) - 1);
 302         cap->bus_info[0] = 0;
 303         cap->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
 304         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
 305         return 0;
 306 }
 307
 308 static int vidioc_enum_fmt(struct file *file, void *prv, struct v4l2_fmtdesc *f)
 309 {
 310         struct g2d_fmt *fmt;
 311         if (f->index >= NUM_FORMATS)
 312                 return -EINVAL;
 313         fmt = &formats[f->index];
 314         f->pixelformat = fmt->fourcc;
 315         strncpy(f->description, fmt->name, sizeof(f->description) - 1);
 316         return 0;
 317 }
 318
 319 static int vidioc_g_fmt(struct file *file, void *prv, struct v4l2_format *f)
 320 {
 321         struct g2d_ctx *ctx = prv;
 322         struct vb2_queue *vq;
 323         struct g2d_frame *frm;
 324
 325         vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
 326         if (!vq)
 327                 return -EINVAL;
 328         frm = get_frame(ctx, f->type);
 329         if (IS_ERR(frm))
 330                 return PTR_ERR(frm);
 331
 332         f->fmt.pix.width                = frm->width;
 333         f->fmt.pix.height               = frm->height;
 334         f->fmt.pix.field                = V4L2_FIELD_NONE;
 335         f->fmt.pix.pixelformat          = frm->fmt->fourcc;
 336         f->fmt.pix.bytesperline         = (frm->width * frm->fmt->depth) >> 3;
 337         f->fmt.pix.sizeimage            = frm->size;
 338         return 0;
 339 }
 340
 341 static int vidioc_try_fmt(struct file *file, void *prv, struct v4l2_format *f)
 342 {
 343         struct g2d_fmt *fmt;
 344         enum v4l2_field *field;
 345
 346         fmt = find_fmt(f);
 347         if (!fmt)
 348                 return -EINVAL;
 349
 350         field = &f->fmt.pix.field;
 351         if (*field == V4L2_FIELD_ANY)
 352                 *field = V4L2_FIELD_NONE;
 353         else if (*field != V4L2_FIELD_NONE)
 354                 return -EINVAL;
 355
 356         if (f->fmt.pix.width > MAX_WIDTH)
 357                 f->fmt.pix.width = MAX_WIDTH;
 358         if (f->fmt.pix.height > MAX_HEIGHT)
 359                 f->fmt.pix.height = MAX_HEIGHT;
 360
 361         if (f->fmt.pix.width < 1)
 362                 f->fmt.pix.width = 1;
 363         if (f->fmt.pix.height < 1)
 364                 f->fmt.pix.height = 1;
 365
 366         f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
 367         f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
 368         return 0;
 369 }
 370
 371 static int vidioc_s_fmt(struct file *file, void *prv, struct v4l2_format *f)
 372 {
 373         struct g2d_ctx *ctx = prv;
 374         struct g2d_dev *dev = ctx->dev;
 375         struct vb2_queue *vq;
 376         struct g2d_frame *frm;
 377         struct g2d_fmt *fmt;
 378         int ret = 0;
 379
 380         /* Adjust all values accordingly to the hardware capabilities
 381          * and chosen format. */
 382         ret = vidioc_try_fmt(file, prv, f);
 383         if (ret)
 384                 return ret;
 385         vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
 386         if (vb2_is_busy(vq)) {
 387                 v4l2_err(&dev->v4l2_dev, "queue (%d) bust\n", f->type);
 388                 return -EBUSY;
 389         }
 390         frm = get_frame(ctx, f->type);
 391         if (IS_ERR(frm))
 392                 return PTR_ERR(frm);
 393         fmt = find_fmt(f);
 394         if (!fmt)
 395                 return -EINVAL;
 396         frm->width      = f->fmt.pix.width;
 397         frm->height     = f->fmt.pix.height;
 398         frm->size       = f->fmt.pix.sizeimage;
 399         /* Reset crop settings */
 400         frm->o_width    = 0;
 401         frm->o_height   = 0;
 402         frm->c_width    = frm->width;
 403         frm->c_height   = frm->height;
 404         frm->right      = frm->width;
 405         frm->bottom     = frm->height;
 406         frm->fmt        = fmt;
 407         frm->stride     = f->fmt.pix.bytesperline;
 408         return 0;
 409 }
 410
 411 static int vidioc_cropcap(struct file *file, void *priv,
 412                                         struct v4l2_cropcap *cr)
 413 {
 414         struct g2d_ctx *ctx = priv;
 415         struct g2d_frame *f;
 416
 417         f = get_frame(ctx, cr->type);
 418         if (IS_ERR(f))
 419                 return PTR_ERR(f);
 420
 421         cr->bounds.left         = 0;
 422         cr->bounds.top          = 0;
 423         cr->bounds.width        = f->width;
 424         cr->bounds.height       = f->height;
 425         cr->defrect             = cr->bounds;
 426         return 0;
 427 }
 428
 429 static int vidioc_g_crop(struct file *file, void *prv, struct v4l2_crop *cr)
 430 {
 431         struct g2d_ctx *ctx = prv;
 432         struct g2d_frame *f;
 433
 434         f = get_frame(ctx, cr->type);
 435         if (IS_ERR(f))
 436                 return PTR_ERR(f);
 437
 438         cr->c.left      = f->o_height;
 439         cr->c.top       = f->o_width;
 440         cr->c.width     = f->c_width;
 441         cr->c.height    = f->c_height;
 442         return 0;
 443 }
 444
 445 static int vidioc_try_crop(struct file *file, void *prv, const struct v4l2_crop *cr)
 446 {
 447         struct g2d_ctx *ctx = prv;
 448         struct g2d_dev *dev = ctx->dev;
 449         struct g2d_frame *f;
 450
 451         f = get_frame(ctx, cr->type);
 452         if (IS_ERR(f))
 453                 return PTR_ERR(f);
 454
 455         if (cr->c.top < 0 || cr->c.left < 0) {
 456                 v4l2_err(&dev->v4l2_dev,
 457                         "doesn't support negative values for top & left\n");
 458                 return -EINVAL;
 459         }
 460
 461         return 0;
 462 }
 463
 464 static int vidioc_s_crop(struct file *file, void *prv, const struct v4l2_crop *cr)
 465 {
 466         struct g2d_ctx *ctx = prv;
 467         struct g2d_frame *f;
 468         int ret;
 469
 470         ret = vidioc_try_crop(file, prv, cr);
 471         if (ret)
 472                 return ret;
 473         f = get_frame(ctx, cr->type);
 474         if (IS_ERR(f))
 475                 return PTR_ERR(f);
 476
 477         f->c_width      = cr->c.width;
 478         f->c_height     = cr->c.height;
 479         f->o_width      = cr->c.left;
 480         f->o_height     = cr->c.top;
 481         f->bottom       = f->o_height + f->c_height;
 482         f->right        = f->o_width + f->c_width;
 483         return 0;
 484 }
 485
 486 static void device_run(void *prv)
 487 {
 488         struct g2d_ctx *ctx = prv;
 489         struct g2d_dev *dev = ctx->dev;
 490         struct vb2_buffer *src, *dst;
 491         unsigned long flags;
 492         u32 cmd = 0;
 493
 494         dev->curr = ctx;
 495
 496         src = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
 497         dst = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
 498
 499         clk_enable(dev->gate);
 500         g2d_reset(dev);
 501
 502         spin_lock_irqsave(&dev->ctrl_lock, flags);
 503
 504         g2d_set_src_size(dev, &ctx->in);
 505         g2d_set_src_addr(dev, vb2_dma_contig_plane_dma_addr(src, 0));
 506
 507         g2d_set_dst_size(dev, &ctx->out);
 508         g2d_set_dst_addr(dev, vb2_dma_contig_plane_dma_addr(dst, 0));
 509
 510         g2d_set_rop4(dev, ctx->rop);
 511         g2d_set_flip(dev, ctx->flip);
 512
 513         if (ctx->in.c_width != ctx->out.c_width ||
 514                 ctx->in.c_height != ctx->out.c_height) {
 515                 if (dev->variant->hw_rev == TYPE_G2D_3X)
 516                         cmd |= CMD_V3_ENABLE_STRETCH;
 517                 else
 518                         g2d_set_v41_stretch(dev, &ctx->in, &ctx->out);
 519         }
 520
 521         g2d_set_cmd(dev, cmd);
 522         g2d_start(dev);
 523
 524         spin_unlock_irqrestore(&dev->ctrl_lock, flags);
 525 }
 526
 527 static irqreturn_t g2d_isr(int irq, void *prv)
 528 {
 529         struct g2d_dev *dev = prv;
 530         struct g2d_ctx *ctx = dev->curr;
 531         struct vb2_v4l2_buffer *src, *dst;
 532
 533         g2d_clear_int(dev);
 534         clk_disable(dev->gate);
 535
 536         BUG_ON(ctx == NULL);
 537
 538         src = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
 539         dst = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
 540
 541         BUG_ON(src == NULL);
 542         BUG_ON(dst == NULL);
 543
 544         dst->timecode = src->timecode;
 545         dst->vb2_buf.timestamp = src->vb2_buf.timestamp;
 546         dst->flags &= ~V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
 547         dst->flags |=
 548                 src->flags & V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
 549
 550         v4l2_m2m_buf_done(src, VB2_BUF_STATE_DONE);
 551         v4l2_m2m_buf_done(dst, VB2_BUF_STATE_DONE);
 552         v4l2_m2m_job_finish(dev->m2m_dev, ctx->fh.m2m_ctx);
 553
 554         dev->curr = NULL;
 555         return IRQ_HANDLED;
 556 }
 557
 558 static const struct v4l2_file_operations g2d_fops = {
 559         .owner          = THIS_MODULE,
 560         .open           = g2d_open,
 561         .release        = g2d_release,
 562         .poll           = v4l2_m2m_fop_poll,
 563         .unlocked_ioctl = video_ioctl2,
 564         .mmap           = v4l2_m2m_fop_mmap,
 565 };
 566
 567 static const struct v4l2_ioctl_ops g2d_ioctl_ops = {
 568         .vidioc_querycap        = vidioc_querycap,
 569
 570         .vidioc_enum_fmt_vid_cap        = vidioc_enum_fmt,
 571         .vidioc_g_fmt_vid_cap           = vidioc_g_fmt,
 572         .vidioc_try_fmt_vid_cap         = vidioc_try_fmt,
 573         .vidioc_s_fmt_vid_cap           = vidioc_s_fmt,
 574
 575         .vidioc_enum_fmt_vid_out        = vidioc_enum_fmt,
 576         .vidioc_g_fmt_vid_out           = vidioc_g_fmt,
 577         .vidioc_try_fmt_vid_out         = vidioc_try_fmt,
 578         .vidioc_s_fmt_vid_out           = vidioc_s_fmt,
 579
 580         .vidioc_reqbufs                 = v4l2_m2m_ioctl_reqbufs,
 581         .vidioc_querybuf                = v4l2_m2m_ioctl_querybuf,
 582         .vidioc_qbuf                    = v4l2_m2m_ioctl_qbuf,
 583         .vidioc_dqbuf                   = v4l2_m2m_ioctl_dqbuf,
 584
 585         .vidioc_streamon                = v4l2_m2m_ioctl_streamon,
 586         .vidioc_streamoff               = v4l2_m2m_ioctl_streamoff,
 587
 588         .vidioc_g_crop                  = vidioc_g_crop,
 589         .vidioc_s_crop                  = vidioc_s_crop,
 590         .vidioc_cropcap                 = vidioc_cropcap,
 591 };
 592
 593 static const struct video_device g2d_videodev = {
 594         .name           = G2D_NAME,
 595         .fops           = &g2d_fops,
 596         .ioctl_ops      = &g2d_ioctl_ops,
 597         .minor          = -1,
 598         .release        = video_device_release,
 599         .vfl_dir        = VFL_DIR_M2M,
 600 };
 601
 602 static const struct v4l2_m2m_ops g2d_m2m_ops = {
 603         .device_run     = device_run,
 604 };
 605
 606 static const struct of_device_id exynos_g2d_match[];
 607
 608 static int g2d_probe(struct platform_device *pdev)
 609 {
 610         struct g2d_dev *dev;
 611         struct video_device *vfd;
 612         struct resource *res;
 613         const struct of_device_id *of_id;
 614         int ret = 0;
 615
 616         dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
 617         if (!dev)
 618                 return -ENOMEM;
 619
 620         spin_lock_init(&dev->ctrl_lock);
 621         mutex_init(&dev->mutex);
 622         atomic_set(&dev->num_inst, 0);
 623
 624         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 625
 626         dev->regs = devm_ioremap_resource(&pdev->dev, res);
 627         if (IS_ERR(dev->regs))
 628                 return PTR_ERR(dev->regs);
 629
 630         dev->clk = clk_get(&pdev->dev, "sclk_fimg2d");
 631         if (IS_ERR(dev->clk)) {
 632                 dev_err(&pdev->dev, "failed to get g2d clock\n");
 633                 return -ENXIO;
 634         }
 635
 636         ret = clk_prepare(dev->clk);
 637         if (ret) {
 638                 dev_err(&pdev->dev, "failed to prepare g2d clock\n");
 639                 goto put_clk;
 640         }
 641
 642         dev->gate = clk_get(&pdev->dev, "fimg2d");
 643         if (IS_ERR(dev->gate)) {
 644                 dev_err(&pdev->dev, "failed to get g2d clock gate\n");
 645                 ret = -ENXIO;
 646                 goto unprep_clk;
 647         }
 648
 649         ret = clk_prepare(dev->gate);
 650         if (ret) {
 651                 dev_err(&pdev->dev, "failed to prepare g2d clock gate\n");
 652                 goto put_clk_gate;
 653         }
 654
 655         res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
 656         if (!res) {
 657                 dev_err(&pdev->dev, "failed to find IRQ\n");
 658                 ret = -ENXIO;
 659                 goto unprep_clk_gate;
 660         }
 661
 662         dev->irq = res->start;
 663
 664         ret = devm_request_irq(&pdev->dev, dev->irq, g2d_isr,
 665                                                 0, pdev->name, dev);
 666         if (ret) {
 667                 dev_err(&pdev->dev, "failed to install IRQ\n");
 668                 goto unprep_clk_gate;
 669         }
 670
 671         vb2_dma_contig_set_max_seg_size(&pdev->dev, DMA_BIT_MASK(32));
 672
 673         ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
 674         if (ret)
 675                 goto unprep_clk_gate;
 676         vfd = video_device_alloc();
 677         if (!vfd) {
 678                 v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n");
 679                 ret = -ENOMEM;
 680                 goto unreg_v4l2_dev;
 681         }
 682         *vfd = g2d_videodev;
 683         vfd->lock = &dev->mutex;
 684         vfd->v4l2_dev = &dev->v4l2_dev;
 685         ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0);
 686         if (ret) {
 687                 v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
 688                 goto rel_vdev;
 689         }
 690         video_set_drvdata(vfd, dev);
 691         dev->vfd = vfd;
 692         v4l2_info(&dev->v4l2_dev, "device registered as /dev/video%d\n",
 693                                                                 vfd->num);
 694         platform_set_drvdata(pdev, dev);
 695         dev->m2m_dev = v4l2_m2m_init(&g2d_m2m_ops);
 696         if (IS_ERR(dev->m2m_dev)) {
 697                 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n");
 698                 ret = PTR_ERR(dev->m2m_dev);
 699                 goto unreg_video_dev;
 700         }
 701
 702         def_frame.stride = (def_frame.width * def_frame.fmt->depth) >> 3;
 703
 704         of_id = of_match_node(exynos_g2d_match, pdev->dev.of_node);
 705         if (!of_id) {
 706                 ret = -ENODEV;
 707                 goto unreg_video_dev;
 708         }
 709         dev->variant = (struct g2d_variant *)of_id->data;
 710
 711         return 0;
 712
 713 unreg_video_dev:
 714         video_unregister_device(dev->vfd);
 715 rel_vdev:
 716         video_device_release(vfd);
 717 unreg_v4l2_dev:
 718         v4l2_device_unregister(&dev->v4l2_dev);
 719 unprep_clk_gate:
 720         clk_unprepare(dev->gate);
 721 put_clk_gate:
 722         clk_put(dev->gate);
 723 unprep_clk:
 724         clk_unprepare(dev->clk);
 725 put_clk:
 726         clk_put(dev->clk);
 727
 728         return ret;
 729 }
 730
 731 static int g2d_remove(struct platform_device *pdev)
 732 {
 733         struct g2d_dev *dev = platform_get_drvdata(pdev);
 734
 735         v4l2_info(&dev->v4l2_dev, "Removing " G2D_NAME);
 736         v4l2_m2m_release(dev->m2m_dev);
 737         video_unregister_device(dev->vfd);
 738         v4l2_device_unregister(&dev->v4l2_dev);
 739         vb2_dma_contig_clear_max_seg_size(&pdev->dev);
 740         clk_unprepare(dev->gate);
 741         clk_put(dev->gate);
 742         clk_unprepare(dev->clk);
 743         clk_put(dev->clk);
 744         return 0;
 745 }
 746
 747 static struct g2d_variant g2d_drvdata_v3x = {
 748         .hw_rev = TYPE_G2D_3X, /* Revision 3.0 for S5PV210 and Exynos4210 */
 749 };
 750
 751 static struct g2d_variant g2d_drvdata_v4x = {
 752         .hw_rev = TYPE_G2D_4X, /* Revision 4.1 for Exynos4X12 and Exynos5 */
 753 };
 754
 755 static const struct of_device_id exynos_g2d_match[] = {
 756         {
 757                 .compatible = "samsung,s5pv210-g2d",
 758                 .data = &g2d_drvdata_v3x,
 759         }, {
 760                 .compatible = "samsung,exynos4212-g2d",
 761                 .data = &g2d_drvdata_v4x,
 762         },
 763         {},
 764 };
 765 MODULE_DEVICE_TABLE(of, exynos_g2d_match);
 766
 767 static struct platform_driver g2d_pdrv = {
 768         .probe          = g2d_probe,
 769         .remove         = g2d_remove,
 770         .driver         = {
 771                 .name = G2D_NAME,
 772                 .of_match_table = exynos_g2d_match,
 773         },
 774 };
 775
 776 module_platform_driver(g2d_pdrv);
 777
 778 MODULE_AUTHOR("Kamil Debski <k.debski@samsung.com>");
 779 MODULE_DESCRIPTION("S5P G2D 2d graphics accelerator driver");
 780 MODULE_LICENSE("GPL");