linux/drivers/media/platform/samsung/s5p-g2d/g2d.c
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   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 * Samsung S5P G2D - 2D Graphics Accelerator Driver
   4 *
   5 * Copyright (c) 2011 Samsung Electronics Co., Ltd.
   6 * Kamil Debski, <k.debski@samsung.com>
   7 */
   8
   9#include <linux/module.h>
  10#include <linux/fs.h>
  11#include <linux/timer.h>
  12#include <linux/sched.h>
  13#include <linux/slab.h>
  14#include <linux/clk.h>
  15#include <linux/interrupt.h>
  16#include <linux/of.h>
  17
  18#include <linux/platform_device.h>
  19#include <media/v4l2-mem2mem.h>
  20#include <media/v4l2-device.h>
  21#include <media/v4l2-ioctl.h>
  22#include <media/videobuf2-v4l2.h>
  23#include <media/videobuf2-dma-contig.h>
  24
  25#include "g2d.h"
  26#include "g2d-regs.h"
  27
  28#define fh2ctx(__fh) container_of(__fh, struct g2d_ctx, fh)
  29
  30static struct g2d_fmt formats[] = {
  31        {
  32                .fourcc = V4L2_PIX_FMT_RGB32,
  33                .depth  = 32,
  34                .hw     = COLOR_MODE(ORDER_XRGB, MODE_XRGB_8888),
  35        },
  36        {
  37                .fourcc = V4L2_PIX_FMT_RGB565X,
  38                .depth  = 16,
  39                .hw     = COLOR_MODE(ORDER_XRGB, MODE_RGB_565),
  40        },
  41        {
  42                .fourcc = V4L2_PIX_FMT_RGB555X,
  43                .depth  = 16,
  44                .hw     = COLOR_MODE(ORDER_XRGB, MODE_XRGB_1555),
  45        },
  46        {
  47                .fourcc = V4L2_PIX_FMT_RGB444,
  48                .depth  = 16,
  49                .hw     = COLOR_MODE(ORDER_XRGB, MODE_XRGB_4444),
  50        },
  51        {
  52                .fourcc = V4L2_PIX_FMT_RGB24,
  53                .depth  = 24,
  54                .hw     = COLOR_MODE(ORDER_XRGB, MODE_PACKED_RGB_888),
  55        },
  56};
  57#define NUM_FORMATS ARRAY_SIZE(formats)
  58
  59static struct g2d_frame def_frame = {
  60        .width          = DEFAULT_WIDTH,
  61        .height         = DEFAULT_HEIGHT,
  62        .c_width        = DEFAULT_WIDTH,
  63        .c_height       = DEFAULT_HEIGHT,
  64        .o_width        = 0,
  65        .o_height       = 0,
  66        .fmt            = &formats[0],
  67        .right          = DEFAULT_WIDTH,
  68        .bottom         = DEFAULT_HEIGHT,
  69};
  70
  71static struct g2d_fmt *find_fmt(struct v4l2_format *f)
  72{
  73        unsigned int i;
  74        for (i = 0; i < NUM_FORMATS; i++) {
  75                if (formats[i].fourcc == f->fmt.pix.pixelformat)
  76                        return &formats[i];
  77        }
  78        return NULL;
  79}
  80
  81
  82static struct g2d_frame *get_frame(struct g2d_ctx *ctx,
  83                                   enum v4l2_buf_type type)
  84{
  85        switch (type) {
  86        case V4L2_BUF_TYPE_VIDEO_OUTPUT:
  87                return &ctx->in;
  88        case V4L2_BUF_TYPE_VIDEO_CAPTURE:
  89                return &ctx->out;
  90        default:
  91                return ERR_PTR(-EINVAL);
  92        }
  93}
  94
  95static int g2d_queue_setup(struct vb2_queue *vq,
  96                           unsigned int *nbuffers, unsigned int *nplanes,
  97                           unsigned int sizes[], struct device *alloc_devs[])
  98{
  99        struct g2d_ctx *ctx = vb2_get_drv_priv(vq);
 100        struct g2d_frame *f = get_frame(ctx, vq->type);
 101
 102        if (IS_ERR(f))
 103                return PTR_ERR(f);
 104
 105        sizes[0] = f->size;
 106        *nplanes = 1;
 107
 108        if (*nbuffers == 0)
 109                *nbuffers = 1;
 110
 111        return 0;
 112}
 113
 114static int g2d_buf_prepare(struct vb2_buffer *vb)
 115{
 116        struct g2d_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
 117        struct g2d_frame *f = get_frame(ctx, vb->vb2_queue->type);
 118
 119        if (IS_ERR(f))
 120                return PTR_ERR(f);
 121        vb2_set_plane_payload(vb, 0, f->size);
 122        return 0;
 123}
 124
 125static void g2d_buf_queue(struct vb2_buffer *vb)
 126{
 127        struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 128        struct g2d_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
 129        v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
 130}
 131
 132static const struct vb2_ops g2d_qops = {
 133        .queue_setup    = g2d_queue_setup,
 134        .buf_prepare    = g2d_buf_prepare,
 135        .buf_queue      = g2d_buf_queue,
 136        .wait_prepare   = vb2_ops_wait_prepare,
 137        .wait_finish    = vb2_ops_wait_finish,
 138};
 139
 140static int queue_init(void *priv, struct vb2_queue *src_vq,
 141                                                struct vb2_queue *dst_vq)
 142{
 143        struct g2d_ctx *ctx = priv;
 144        int ret;
 145
 146        src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
 147        src_vq->io_modes = VB2_MMAP | VB2_USERPTR;
 148        src_vq->drv_priv = ctx;
 149        src_vq->ops = &g2d_qops;
 150        src_vq->mem_ops = &vb2_dma_contig_memops;
 151        src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
 152        src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
 153        src_vq->lock = &ctx->dev->mutex;
 154        src_vq->dev = ctx->dev->v4l2_dev.dev;
 155
 156        ret = vb2_queue_init(src_vq);
 157        if (ret)
 158                return ret;
 159
 160        dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 161        dst_vq->io_modes = VB2_MMAP | VB2_USERPTR;
 162        dst_vq->drv_priv = ctx;
 163        dst_vq->ops = &g2d_qops;
 164        dst_vq->mem_ops = &vb2_dma_contig_memops;
 165        dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
 166        dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
 167        dst_vq->lock = &ctx->dev->mutex;
 168        dst_vq->dev = ctx->dev->v4l2_dev.dev;
 169
 170        return vb2_queue_init(dst_vq);
 171}
 172
 173static int g2d_s_ctrl(struct v4l2_ctrl *ctrl)
 174{
 175        struct g2d_ctx *ctx = container_of(ctrl->handler, struct g2d_ctx,
 176                                                                ctrl_handler);
 177        unsigned long flags;
 178
 179        spin_lock_irqsave(&ctx->dev->ctrl_lock, flags);
 180        switch (ctrl->id) {
 181        case V4L2_CID_COLORFX:
 182                if (ctrl->val == V4L2_COLORFX_NEGATIVE)
 183                        ctx->rop = ROP4_INVERT;
 184                else
 185                        ctx->rop = ROP4_COPY;
 186                break;
 187
 188        case V4L2_CID_HFLIP:
 189                ctx->flip = ctx->ctrl_hflip->val | (ctx->ctrl_vflip->val << 1);
 190                break;
 191
 192        }
 193        spin_unlock_irqrestore(&ctx->dev->ctrl_lock, flags);
 194        return 0;
 195}
 196
 197static const struct v4l2_ctrl_ops g2d_ctrl_ops = {
 198        .s_ctrl         = g2d_s_ctrl,
 199};
 200
 201static int g2d_setup_ctrls(struct g2d_ctx *ctx)
 202{
 203        struct g2d_dev *dev = ctx->dev;
 204
 205        v4l2_ctrl_handler_init(&ctx->ctrl_handler, 3);
 206
 207        ctx->ctrl_hflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, &g2d_ctrl_ops,
 208                                                V4L2_CID_HFLIP, 0, 1, 1, 0);
 209
 210        ctx->ctrl_vflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, &g2d_ctrl_ops,
 211                                                V4L2_CID_VFLIP, 0, 1, 1, 0);
 212
 213        v4l2_ctrl_new_std_menu(
 214                &ctx->ctrl_handler,
 215                &g2d_ctrl_ops,
 216                V4L2_CID_COLORFX,
 217                V4L2_COLORFX_NEGATIVE,
 218                ~((1 << V4L2_COLORFX_NONE) | (1 << V4L2_COLORFX_NEGATIVE)),
 219                V4L2_COLORFX_NONE);
 220
 221        if (ctx->ctrl_handler.error) {
 222                int err = ctx->ctrl_handler.error;
 223                v4l2_err(&dev->v4l2_dev, "g2d_setup_ctrls failed\n");
 224                v4l2_ctrl_handler_free(&ctx->ctrl_handler);
 225                return err;
 226        }
 227
 228        v4l2_ctrl_cluster(2, &ctx->ctrl_hflip);
 229
 230        return 0;
 231}
 232
 233static int g2d_open(struct file *file)
 234{
 235        struct g2d_dev *dev = video_drvdata(file);
 236        struct g2d_ctx *ctx = NULL;
 237        int ret = 0;
 238
 239        ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
 240        if (!ctx)
 241                return -ENOMEM;
 242        ctx->dev = dev;
 243        /* Set default formats */
 244        ctx->in         = def_frame;
 245        ctx->out        = def_frame;
 246
 247        if (mutex_lock_interruptible(&dev->mutex)) {
 248                kfree(ctx);
 249                return -ERESTARTSYS;
 250        }
 251        ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx, &queue_init);
 252        if (IS_ERR(ctx->fh.m2m_ctx)) {
 253                ret = PTR_ERR(ctx->fh.m2m_ctx);
 254                mutex_unlock(&dev->mutex);
 255                kfree(ctx);
 256                return ret;
 257        }
 258        v4l2_fh_init(&ctx->fh, video_devdata(file));
 259        file->private_data = &ctx->fh;
 260        v4l2_fh_add(&ctx->fh);
 261
 262        g2d_setup_ctrls(ctx);
 263
 264        /* Write the default values to the ctx struct */
 265        v4l2_ctrl_handler_setup(&ctx->ctrl_handler);
 266
 267        ctx->fh.ctrl_handler = &ctx->ctrl_handler;
 268        mutex_unlock(&dev->mutex);
 269
 270        v4l2_info(&dev->v4l2_dev, "instance opened\n");
 271        return 0;
 272}
 273
 274static int g2d_release(struct file *file)
 275{
 276        struct g2d_dev *dev = video_drvdata(file);
 277        struct g2d_ctx *ctx = fh2ctx(file->private_data);
 278
 279        mutex_lock(&dev->mutex);
 280        v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
 281        mutex_unlock(&dev->mutex);
 282        v4l2_ctrl_handler_free(&ctx->ctrl_handler);
 283        v4l2_fh_del(&ctx->fh);
 284        v4l2_fh_exit(&ctx->fh);
 285        kfree(ctx);
 286        v4l2_info(&dev->v4l2_dev, "instance closed\n");
 287        return 0;
 288}
 289
 290
 291static int vidioc_querycap(struct file *file, void *priv,
 292                                struct v4l2_capability *cap)
 293{
 294        strscpy(cap->driver, G2D_NAME, sizeof(cap->driver));
 295        strscpy(cap->card, G2D_NAME, sizeof(cap->card));
 296        cap->bus_info[0] = 0;
 297        return 0;
 298}
 299
 300static int vidioc_enum_fmt(struct file *file, void *prv, struct v4l2_fmtdesc *f)
 301{
 302        if (f->index >= NUM_FORMATS)
 303                return -EINVAL;
 304        f->pixelformat = formats[f->index].fourcc;
 305        return 0;
 306}
 307
 308static int vidioc_g_fmt(struct file *file, void *prv, struct v4l2_format *f)
 309{
 310        struct g2d_ctx *ctx = prv;
 311        struct vb2_queue *vq;
 312        struct g2d_frame *frm;
 313
 314        vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
 315        if (!vq)
 316                return -EINVAL;
 317        frm = get_frame(ctx, f->type);
 318        if (IS_ERR(frm))
 319                return PTR_ERR(frm);
 320
 321        f->fmt.pix.width                = frm->width;
 322        f->fmt.pix.height               = frm->height;
 323        f->fmt.pix.field                = V4L2_FIELD_NONE;
 324        f->fmt.pix.pixelformat          = frm->fmt->fourcc;
 325        f->fmt.pix.bytesperline         = (frm->width * frm->fmt->depth) >> 3;
 326        f->fmt.pix.sizeimage            = frm->size;
 327        return 0;
 328}
 329
 330static int vidioc_try_fmt(struct file *file, void *prv, struct v4l2_format *f)
 331{
 332        struct g2d_fmt *fmt;
 333        enum v4l2_field *field;
 334
 335        fmt = find_fmt(f);
 336        if (!fmt)
 337                return -EINVAL;
 338
 339        field = &f->fmt.pix.field;
 340        if (*field == V4L2_FIELD_ANY)
 341                *field = V4L2_FIELD_NONE;
 342        else if (*field != V4L2_FIELD_NONE)
 343                return -EINVAL;
 344
 345        if (f->fmt.pix.width > MAX_WIDTH)
 346                f->fmt.pix.width = MAX_WIDTH;
 347        if (f->fmt.pix.height > MAX_HEIGHT)
 348                f->fmt.pix.height = MAX_HEIGHT;
 349
 350        if (f->fmt.pix.width < 1)
 351                f->fmt.pix.width = 1;
 352        if (f->fmt.pix.height < 1)
 353                f->fmt.pix.height = 1;
 354
 355        f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
 356        f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
 357        return 0;
 358}
 359
 360static int vidioc_s_fmt(struct file *file, void *prv, struct v4l2_format *f)
 361{
 362        struct g2d_ctx *ctx = prv;
 363        struct g2d_dev *dev = ctx->dev;
 364        struct vb2_queue *vq;
 365        struct g2d_frame *frm;
 366        struct g2d_fmt *fmt;
 367        int ret = 0;
 368
 369        /* Adjust all values accordingly to the hardware capabilities
 370         * and chosen format. */
 371        ret = vidioc_try_fmt(file, prv, f);
 372        if (ret)
 373                return ret;
 374        vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
 375        if (vb2_is_busy(vq)) {
 376                v4l2_err(&dev->v4l2_dev, "queue (%d) bust\n", f->type);
 377                return -EBUSY;
 378        }
 379        frm = get_frame(ctx, f->type);
 380        if (IS_ERR(frm))
 381                return PTR_ERR(frm);
 382        fmt = find_fmt(f);
 383        if (!fmt)
 384                return -EINVAL;
 385        frm->width      = f->fmt.pix.width;
 386        frm->height     = f->fmt.pix.height;
 387        frm->size       = f->fmt.pix.sizeimage;
 388        /* Reset crop settings */
 389        frm->o_width    = 0;
 390        frm->o_height   = 0;
 391        frm->c_width    = frm->width;
 392        frm->c_height   = frm->height;
 393        frm->right      = frm->width;
 394        frm->bottom     = frm->height;
 395        frm->fmt        = fmt;
 396        frm->stride     = f->fmt.pix.bytesperline;
 397        return 0;
 398}
 399
 400static int vidioc_g_selection(struct file *file, void *prv,
 401                              struct v4l2_selection *s)
 402{
 403        struct g2d_ctx *ctx = prv;
 404        struct g2d_frame *f;
 405
 406        f = get_frame(ctx, s->type);
 407        if (IS_ERR(f))
 408                return PTR_ERR(f);
 409
 410        switch (s->target) {
 411        case V4L2_SEL_TGT_CROP:
 412        case V4L2_SEL_TGT_CROP_DEFAULT:
 413        case V4L2_SEL_TGT_CROP_BOUNDS:
 414                if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
 415                        return -EINVAL;
 416                break;
 417        case V4L2_SEL_TGT_COMPOSE:
 418        case V4L2_SEL_TGT_COMPOSE_DEFAULT:
 419        case V4L2_SEL_TGT_COMPOSE_BOUNDS:
 420                if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 421                        return -EINVAL;
 422                break;
 423        default:
 424                return -EINVAL;
 425        }
 426
 427        switch (s->target) {
 428        case V4L2_SEL_TGT_CROP:
 429        case V4L2_SEL_TGT_COMPOSE:
 430                s->r.left = f->o_height;
 431                s->r.top = f->o_width;
 432                s->r.width = f->c_width;
 433                s->r.height = f->c_height;
 434                break;
 435        case V4L2_SEL_TGT_CROP_DEFAULT:
 436        case V4L2_SEL_TGT_CROP_BOUNDS:
 437        case V4L2_SEL_TGT_COMPOSE_DEFAULT:
 438        case V4L2_SEL_TGT_COMPOSE_BOUNDS:
 439                s->r.left = 0;
 440                s->r.top = 0;
 441                s->r.width = f->width;
 442                s->r.height = f->height;
 443                break;
 444        default:
 445                return -EINVAL;
 446        }
 447        return 0;
 448}
 449
 450static int vidioc_try_selection(struct file *file, void *prv,
 451                                const struct v4l2_selection *s)
 452{
 453        struct g2d_ctx *ctx = prv;
 454        struct g2d_dev *dev = ctx->dev;
 455        struct g2d_frame *f;
 456
 457        f = get_frame(ctx, s->type);
 458        if (IS_ERR(f))
 459                return PTR_ERR(f);
 460
 461        if (s->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
 462                if (s->target != V4L2_SEL_TGT_COMPOSE)
 463                        return -EINVAL;
 464        } else if (s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
 465                if (s->target != V4L2_SEL_TGT_CROP)
 466                        return -EINVAL;
 467        }
 468
 469        if (s->r.top < 0 || s->r.left < 0) {
 470                v4l2_err(&dev->v4l2_dev,
 471                        "doesn't support negative values for top & left\n");
 472                return -EINVAL;
 473        }
 474
 475        return 0;
 476}
 477
 478static int vidioc_s_selection(struct file *file, void *prv,
 479                              struct v4l2_selection *s)
 480{
 481        struct g2d_ctx *ctx = prv;
 482        struct g2d_frame *f;
 483        int ret;
 484
 485        ret = vidioc_try_selection(file, prv, s);
 486        if (ret)
 487                return ret;
 488        f = get_frame(ctx, s->type);
 489        if (IS_ERR(f))
 490                return PTR_ERR(f);
 491
 492        f->c_width      = s->r.width;
 493        f->c_height     = s->r.height;
 494        f->o_width      = s->r.left;
 495        f->o_height     = s->r.top;
 496        f->bottom       = f->o_height + f->c_height;
 497        f->right        = f->o_width + f->c_width;
 498        return 0;
 499}
 500
 501static void device_run(void *prv)
 502{
 503        struct g2d_ctx *ctx = prv;
 504        struct g2d_dev *dev = ctx->dev;
 505        struct vb2_v4l2_buffer *src, *dst;
 506        unsigned long flags;
 507        u32 cmd = 0;
 508
 509        dev->curr = ctx;
 510
 511        src = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
 512        dst = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
 513
 514        clk_enable(dev->gate);
 515        g2d_reset(dev);
 516
 517        spin_lock_irqsave(&dev->ctrl_lock, flags);
 518
 519        g2d_set_src_size(dev, &ctx->in);
 520        g2d_set_src_addr(dev, vb2_dma_contig_plane_dma_addr(&src->vb2_buf, 0));
 521
 522        g2d_set_dst_size(dev, &ctx->out);
 523        g2d_set_dst_addr(dev, vb2_dma_contig_plane_dma_addr(&dst->vb2_buf, 0));
 524
 525        g2d_set_rop4(dev, ctx->rop);
 526        g2d_set_flip(dev, ctx->flip);
 527
 528        if (ctx->in.c_width != ctx->out.c_width ||
 529                ctx->in.c_height != ctx->out.c_height) {
 530                if (dev->variant->hw_rev == TYPE_G2D_3X)
 531                        cmd |= CMD_V3_ENABLE_STRETCH;
 532                else
 533                        g2d_set_v41_stretch(dev, &ctx->in, &ctx->out);
 534        }
 535
 536        g2d_set_cmd(dev, cmd);
 537        g2d_start(dev);
 538
 539        spin_unlock_irqrestore(&dev->ctrl_lock, flags);
 540}
 541
 542static irqreturn_t g2d_isr(int irq, void *prv)
 543{
 544        struct g2d_dev *dev = prv;
 545        struct g2d_ctx *ctx = dev->curr;
 546        struct vb2_v4l2_buffer *src, *dst;
 547
 548        g2d_clear_int(dev);
 549        clk_disable(dev->gate);
 550
 551        BUG_ON(ctx == NULL);
 552
 553        src = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
 554        dst = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
 555
 556        BUG_ON(src == NULL);
 557        BUG_ON(dst == NULL);
 558
 559        dst->timecode = src->timecode;
 560        dst->vb2_buf.timestamp = src->vb2_buf.timestamp;
 561        dst->flags &= ~V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
 562        dst->flags |=
 563                src->flags & V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
 564
 565        v4l2_m2m_buf_done(src, VB2_BUF_STATE_DONE);
 566        v4l2_m2m_buf_done(dst, VB2_BUF_STATE_DONE);
 567        v4l2_m2m_job_finish(dev->m2m_dev, ctx->fh.m2m_ctx);
 568
 569        dev->curr = NULL;
 570        return IRQ_HANDLED;
 571}
 572
 573static 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
 582static 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_selection             = vidioc_g_selection,
 604        .vidioc_s_selection             = vidioc_s_selection,
 605};
 606
 607static const struct video_device g2d_videodev = {
 608        .name           = G2D_NAME,
 609        .fops           = &g2d_fops,
 610        .ioctl_ops      = &g2d_ioctl_ops,
 611        .minor          = -1,
 612        .release        = video_device_release,
 613        .vfl_dir        = VFL_DIR_M2M,
 614};
 615
 616static const struct v4l2_m2m_ops g2d_m2m_ops = {
 617        .device_run     = device_run,
 618};
 619
 620static const struct of_device_id exynos_g2d_match[];
 621
 622static int g2d_probe(struct platform_device *pdev)
 623{
 624        struct g2d_dev *dev;
 625        struct video_device *vfd;
 626        const struct of_device_id *of_id;
 627        int ret = 0;
 628
 629        dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
 630        if (!dev)
 631                return -ENOMEM;
 632
 633        spin_lock_init(&dev->ctrl_lock);
 634        mutex_init(&dev->mutex);
 635        atomic_set(&dev->num_inst, 0);
 636
 637        dev->regs = devm_platform_ioremap_resource(pdev, 0);
 638        if (IS_ERR(dev->regs))
 639                return PTR_ERR(dev->regs);
 640
 641        dev->clk = clk_get(&pdev->dev, "sclk_fimg2d");
 642        if (IS_ERR(dev->clk)) {
 643                dev_err(&pdev->dev, "failed to get g2d clock\n");
 644                return -ENXIO;
 645        }
 646
 647        ret = clk_prepare(dev->clk);
 648        if (ret) {
 649                dev_err(&pdev->dev, "failed to prepare g2d clock\n");
 650                goto put_clk;
 651        }
 652
 653        dev->gate = clk_get(&pdev->dev, "fimg2d");
 654        if (IS_ERR(dev->gate)) {
 655                dev_err(&pdev->dev, "failed to get g2d clock gate\n");
 656                ret = -ENXIO;
 657                goto unprep_clk;
 658        }
 659
 660        ret = clk_prepare(dev->gate);
 661        if (ret) {
 662                dev_err(&pdev->dev, "failed to prepare g2d clock gate\n");
 663                goto put_clk_gate;
 664        }
 665
 666        ret = platform_get_irq(pdev, 0);
 667        if (ret < 0)
 668                goto unprep_clk_gate;
 669
 670        dev->irq = ret;
 671
 672        ret = devm_request_irq(&pdev->dev, dev->irq, g2d_isr,
 673                                                0, pdev->name, dev);
 674        if (ret) {
 675                dev_err(&pdev->dev, "failed to install IRQ\n");
 676                goto unprep_clk_gate;
 677        }
 678
 679        vb2_dma_contig_set_max_seg_size(&pdev->dev, DMA_BIT_MASK(32));
 680
 681        ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
 682        if (ret)
 683                goto unprep_clk_gate;
 684        vfd = video_device_alloc();
 685        if (!vfd) {
 686                v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n");
 687                ret = -ENOMEM;
 688                goto unreg_v4l2_dev;
 689        }
 690        *vfd = g2d_videodev;
 691        set_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags);
 692        vfd->lock = &dev->mutex;
 693        vfd->v4l2_dev = &dev->v4l2_dev;
 694        vfd->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
 695
 696        platform_set_drvdata(pdev, dev);
 697        dev->m2m_dev = v4l2_m2m_init(&g2d_m2m_ops);
 698        if (IS_ERR(dev->m2m_dev)) {
 699                v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n");
 700                ret = PTR_ERR(dev->m2m_dev);
 701                goto rel_vdev;
 702        }
 703
 704        def_frame.stride = (def_frame.width * def_frame.fmt->depth) >> 3;
 705
 706        of_id = of_match_node(exynos_g2d_match, pdev->dev.of_node);
 707        if (!of_id) {
 708                ret = -ENODEV;
 709                goto free_m2m;
 710        }
 711        dev->variant = (struct g2d_variant *)of_id->data;
 712
 713        ret = video_register_device(vfd, VFL_TYPE_VIDEO, 0);
 714        if (ret) {
 715                v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
 716                goto free_m2m;
 717        }
 718        video_set_drvdata(vfd, dev);
 719        dev->vfd = vfd;
 720        v4l2_info(&dev->v4l2_dev, "device registered as /dev/video%d\n",
 721                  vfd->num);
 722
 723        return 0;
 724
 725free_m2m:
 726        v4l2_m2m_release(dev->m2m_dev);
 727rel_vdev:
 728        video_device_release(vfd);
 729unreg_v4l2_dev:
 730        v4l2_device_unregister(&dev->v4l2_dev);
 731unprep_clk_gate:
 732        clk_unprepare(dev->gate);
 733put_clk_gate:
 734        clk_put(dev->gate);
 735unprep_clk:
 736        clk_unprepare(dev->clk);
 737put_clk:
 738        clk_put(dev->clk);
 739
 740        return ret;
 741}
 742
 743static int g2d_remove(struct platform_device *pdev)
 744{
 745        struct g2d_dev *dev = platform_get_drvdata(pdev);
 746
 747        v4l2_info(&dev->v4l2_dev, "Removing " G2D_NAME);
 748        v4l2_m2m_release(dev->m2m_dev);
 749        video_unregister_device(dev->vfd);
 750        v4l2_device_unregister(&dev->v4l2_dev);
 751        vb2_dma_contig_clear_max_seg_size(&pdev->dev);
 752        clk_unprepare(dev->gate);
 753        clk_put(dev->gate);
 754        clk_unprepare(dev->clk);
 755        clk_put(dev->clk);
 756        return 0;
 757}
 758
 759static struct g2d_variant g2d_drvdata_v3x = {
 760        .hw_rev = TYPE_G2D_3X, /* Revision 3.0 for S5PV210 and Exynos4210 */
 761};
 762
 763static struct g2d_variant g2d_drvdata_v4x = {
 764        .hw_rev = TYPE_G2D_4X, /* Revision 4.1 for Exynos4X12 and Exynos5 */
 765};
 766
 767static const struct of_device_id exynos_g2d_match[] = {
 768        {
 769                .compatible = "samsung,s5pv210-g2d",
 770                .data = &g2d_drvdata_v3x,
 771        }, {
 772                .compatible = "samsung,exynos4212-g2d",
 773                .data = &g2d_drvdata_v4x,
 774        },
 775        {},
 776};
 777MODULE_DEVICE_TABLE(of, exynos_g2d_match);
 778
 779static struct platform_driver g2d_pdrv = {
 780        .probe          = g2d_probe,
 781        .remove         = g2d_remove,
 782        .driver         = {
 783                .name = G2D_NAME,
 784                .of_match_table = exynos_g2d_match,
 785        },
 786};
 787
 788module_platform_driver(g2d_pdrv);
 789
 790MODULE_AUTHOR("Kamil Debski <k.debski@samsung.com>");
 791MODULE_DESCRIPTION("S5P G2D 2d graphics accelerator driver");
 792MODULE_LICENSE("GPL");
 793