drivers/media/platform/rockchip/rga/rga.c

   1 /*
   2  * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
   3  * Author: Jacob Chen <jacob-chen@iotwrt.com>
   4  *
   5  * This software is licensed under the terms of the GNU General Public
   6  * License version 2, as published by the Free Software Foundation, and
   7  * may be copied, distributed, and modified under those terms.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14
  15 #include <linux/clk.h>
  16 #include <linux/debugfs.h>
  17 #include <linux/delay.h>
  18 #include <linux/fs.h>
  19 #include <linux/interrupt.h>
  20 #include <linux/module.h>
  21 #include <linux/of.h>
  22 #include <linux/pm_runtime.h>
  23 #include <linux/reset.h>
  24 #include <linux/sched.h>
  25 #include <linux/slab.h>
  26 #include <linux/timer.h>
  27
  28 #include <linux/platform_device.h>
  29 #include <media/v4l2-device.h>
  30 #include <media/v4l2-event.h>
  31 #include <media/v4l2-ioctl.h>
  32 #include <media/v4l2-mem2mem.h>
  33 #include <media/videobuf2-dma-sg.h>
  34 #include <media/videobuf2-v4l2.h>
  35
  36 #include "rga-hw.h"
  37 #include "rga.h"
  38
  39 static int debug;
  40 module_param(debug, int, 0644);
  41
  42 static void device_run(void *prv)
  43 {
  44         struct rga_ctx *ctx = prv;
  45         struct rockchip_rga *rga = ctx->rga;
  46         struct vb2_v4l2_buffer *src, *dst;
  47         unsigned long flags;
  48
  49         spin_lock_irqsave(&rga->ctrl_lock, flags);
  50
  51         rga->curr = ctx;
  52
  53         src = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
  54         dst = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
  55
  56         rga_buf_map(&src->vb2_buf);
  57         rga_buf_map(&dst->vb2_buf);
  58
  59         rga_hw_start(rga);
  60
  61         spin_unlock_irqrestore(&rga->ctrl_lock, flags);
  62 }
  63
  64 static irqreturn_t rga_isr(int irq, void *prv)
  65 {
  66         struct rockchip_rga *rga = prv;
  67         int intr;
  68
  69         intr = rga_read(rga, RGA_INT) & 0xf;
  70
  71         rga_mod(rga, RGA_INT, intr << 4, 0xf << 4);
  72
  73         if (intr & 0x04) {
  74                 struct vb2_v4l2_buffer *src, *dst;
  75                 struct rga_ctx *ctx = rga->curr;
  76
  77                 WARN_ON(!ctx);
  78
  79                 rga->curr = NULL;
  80
  81                 src = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
  82                 dst = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
  83
  84                 WARN_ON(!src);
  85                 WARN_ON(!dst);
  86
  87                 dst->timecode = src->timecode;
  88                 dst->vb2_buf.timestamp = src->vb2_buf.timestamp;
  89                 dst->flags &= ~V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
  90                 dst->flags |= src->flags & V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
  91
  92                 v4l2_m2m_buf_done(src, VB2_BUF_STATE_DONE);
  93                 v4l2_m2m_buf_done(dst, VB2_BUF_STATE_DONE);
  94                 v4l2_m2m_job_finish(rga->m2m_dev, ctx->fh.m2m_ctx);
  95         }
  96
  97         return IRQ_HANDLED;
  98 }
  99
 100 static struct v4l2_m2m_ops rga_m2m_ops = {
 101         .device_run = device_run,
 102 };
 103
 104 static int
 105 queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq)
 106 {
 107         struct rga_ctx *ctx = priv;
 108         int ret;
 109
 110         src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
 111         src_vq->io_modes = VB2_MMAP | VB2_DMABUF;
 112         src_vq->drv_priv = ctx;
 113         src_vq->ops = &rga_qops;
 114         src_vq->mem_ops = &vb2_dma_sg_memops;
 115         src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
 116         src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
 117         src_vq->lock = &ctx->rga->mutex;
 118         src_vq->dev = ctx->rga->v4l2_dev.dev;
 119
 120         ret = vb2_queue_init(src_vq);
 121         if (ret)
 122                 return ret;
 123
 124         dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 125         dst_vq->io_modes = VB2_MMAP | VB2_DMABUF;
 126         dst_vq->drv_priv = ctx;
 127         dst_vq->ops = &rga_qops;
 128         dst_vq->mem_ops = &vb2_dma_sg_memops;
 129         dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
 130         dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
 131         dst_vq->lock = &ctx->rga->mutex;
 132         dst_vq->dev = ctx->rga->v4l2_dev.dev;
 133
 134         return vb2_queue_init(dst_vq);
 135 }
 136
 137 static int rga_s_ctrl(struct v4l2_ctrl *ctrl)
 138 {
 139         struct rga_ctx *ctx = container_of(ctrl->handler, struct rga_ctx,
 140                                            ctrl_handler);
 141         unsigned long flags;
 142
 143         spin_lock_irqsave(&ctx->rga->ctrl_lock, flags);
 144         switch (ctrl->id) {
 145         case V4L2_CID_HFLIP:
 146                 ctx->hflip = ctrl->val;
 147                 break;
 148         case V4L2_CID_VFLIP:
 149                 ctx->vflip = ctrl->val;
 150                 break;
 151         case V4L2_CID_ROTATE:
 152                 ctx->rotate = ctrl->val;
 153                 break;
 154         case V4L2_CID_BG_COLOR:
 155                 ctx->fill_color = ctrl->val;
 156                 break;
 157         }
 158         spin_unlock_irqrestore(&ctx->rga->ctrl_lock, flags);
 159         return 0;
 160 }
 161
 162 static const struct v4l2_ctrl_ops rga_ctrl_ops = {
 163         .s_ctrl = rga_s_ctrl,
 164 };
 165
 166 static int rga_setup_ctrls(struct rga_ctx *ctx)
 167 {
 168         struct rockchip_rga *rga = ctx->rga;
 169
 170         v4l2_ctrl_handler_init(&ctx->ctrl_handler, 4);
 171
 172         v4l2_ctrl_new_std(&ctx->ctrl_handler, &rga_ctrl_ops,
 173                           V4L2_CID_HFLIP, 0, 1, 1, 0);
 174
 175         v4l2_ctrl_new_std(&ctx->ctrl_handler, &rga_ctrl_ops,
 176                           V4L2_CID_VFLIP, 0, 1, 1, 0);
 177
 178         v4l2_ctrl_new_std(&ctx->ctrl_handler, &rga_ctrl_ops,
 179                           V4L2_CID_ROTATE, 0, 270, 90, 0);
 180
 181         v4l2_ctrl_new_std(&ctx->ctrl_handler, &rga_ctrl_ops,
 182                           V4L2_CID_BG_COLOR, 0, 0xffffffff, 1, 0);
 183
 184         if (ctx->ctrl_handler.error) {
 185                 int err = ctx->ctrl_handler.error;
 186
 187                 v4l2_err(&rga->v4l2_dev, "%s failed\n", __func__);
 188                 v4l2_ctrl_handler_free(&ctx->ctrl_handler);
 189                 return err;
 190         }
 191
 192         return 0;
 193 }
 194
 195 static struct rga_fmt formats[] = {
 196         {
 197                 .fourcc = V4L2_PIX_FMT_ARGB32,
 198                 .color_swap = RGA_COLOR_RB_SWAP,
 199                 .hw_format = RGA_COLOR_FMT_ABGR8888,
 200                 .depth = 32,
 201                 .uv_factor = 1,
 202                 .y_div = 1,
 203                 .x_div = 1,
 204         },
 205         {
 206                 .fourcc = V4L2_PIX_FMT_XRGB32,
 207                 .color_swap = RGA_COLOR_RB_SWAP,
 208                 .hw_format = RGA_COLOR_FMT_XBGR8888,
 209                 .depth = 32,
 210                 .uv_factor = 1,
 211                 .y_div = 1,
 212                 .x_div = 1,
 213         },
 214         {
 215                 .fourcc = V4L2_PIX_FMT_ABGR32,
 216                 .color_swap = RGA_COLOR_ALPHA_SWAP,
 217                 .hw_format = RGA_COLOR_FMT_ABGR8888,
 218                 .depth = 32,
 219                 .uv_factor = 1,
 220                 .y_div = 1,
 221                 .x_div = 1,
 222         },
 223         {
 224                 .fourcc = V4L2_PIX_FMT_XBGR32,
 225                 .color_swap = RGA_COLOR_ALPHA_SWAP,
 226                 .hw_format = RGA_COLOR_FMT_XBGR8888,
 227                 .depth = 32,
 228                 .uv_factor = 1,
 229                 .y_div = 1,
 230                 .x_div = 1,
 231         },
 232         {
 233                 .fourcc = V4L2_PIX_FMT_RGB24,
 234                 .color_swap = RGA_COLOR_NONE_SWAP,
 235                 .hw_format = RGA_COLOR_FMT_RGB888,
 236                 .depth = 24,
 237                 .uv_factor = 1,
 238                 .y_div = 1,
 239                 .x_div = 1,
 240         },
 241         {
 242                 .fourcc = V4L2_PIX_FMT_BGR24,
 243                 .color_swap = RGA_COLOR_RB_SWAP,
 244                 .hw_format = RGA_COLOR_FMT_RGB888,
 245                 .depth = 24,
 246                 .uv_factor = 1,
 247                 .y_div = 1,
 248                 .x_div = 1,
 249         },
 250         {
 251                 .fourcc = V4L2_PIX_FMT_ARGB444,
 252                 .color_swap = RGA_COLOR_RB_SWAP,
 253                 .hw_format = RGA_COLOR_FMT_ABGR4444,
 254                 .depth = 16,
 255                 .uv_factor = 1,
 256                 .y_div = 1,
 257                 .x_div = 1,
 258         },
 259         {
 260                 .fourcc = V4L2_PIX_FMT_ARGB555,
 261                 .color_swap = RGA_COLOR_RB_SWAP,
 262                 .hw_format = RGA_COLOR_FMT_ABGR1555,
 263                 .depth = 16,
 264                 .uv_factor = 1,
 265                 .y_div = 1,
 266                 .x_div = 1,
 267         },
 268         {
 269                 .fourcc = V4L2_PIX_FMT_RGB565,
 270                 .color_swap = RGA_COLOR_RB_SWAP,
 271                 .hw_format = RGA_COLOR_FMT_BGR565,
 272                 .depth = 16,
 273                 .uv_factor = 1,
 274                 .y_div = 1,
 275                 .x_div = 1,
 276         },
 277         {
 278                 .fourcc = V4L2_PIX_FMT_NV21,
 279                 .color_swap = RGA_COLOR_UV_SWAP,
 280                 .hw_format = RGA_COLOR_FMT_YUV420SP,
 281                 .depth = 12,
 282                 .uv_factor = 4,
 283                 .y_div = 2,
 284                 .x_div = 1,
 285         },
 286         {
 287                 .fourcc = V4L2_PIX_FMT_NV61,
 288                 .color_swap = RGA_COLOR_UV_SWAP,
 289                 .hw_format = RGA_COLOR_FMT_YUV422SP,
 290                 .depth = 16,
 291                 .uv_factor = 2,
 292                 .y_div = 1,
 293                 .x_div = 1,
 294         },
 295         {
 296                 .fourcc = V4L2_PIX_FMT_NV12,
 297                 .color_swap = RGA_COLOR_NONE_SWAP,
 298                 .hw_format = RGA_COLOR_FMT_YUV420SP,
 299                 .depth = 12,
 300                 .uv_factor = 4,
 301                 .y_div = 2,
 302                 .x_div = 1,
 303         },
 304         {
 305                 .fourcc = V4L2_PIX_FMT_NV16,
 306                 .color_swap = RGA_COLOR_NONE_SWAP,
 307                 .hw_format = RGA_COLOR_FMT_YUV422SP,
 308                 .depth = 16,
 309                 .uv_factor = 2,
 310                 .y_div = 1,
 311                 .x_div = 1,
 312         },
 313         {
 314                 .fourcc = V4L2_PIX_FMT_YUV420,
 315                 .color_swap = RGA_COLOR_NONE_SWAP,
 316                 .hw_format = RGA_COLOR_FMT_YUV420P,
 317                 .depth = 12,
 318                 .uv_factor = 4,
 319                 .y_div = 2,
 320                 .x_div = 2,
 321         },
 322         {
 323                 .fourcc = V4L2_PIX_FMT_YUV422P,
 324                 .color_swap = RGA_COLOR_NONE_SWAP,
 325                 .hw_format = RGA_COLOR_FMT_YUV422P,
 326                 .depth = 16,
 327                 .uv_factor = 2,
 328                 .y_div = 1,
 329                 .x_div = 2,
 330         },
 331         {
 332                 .fourcc = V4L2_PIX_FMT_YVU420,
 333                 .color_swap = RGA_COLOR_UV_SWAP,
 334                 .hw_format = RGA_COLOR_FMT_YUV420P,
 335                 .depth = 12,
 336                 .uv_factor = 4,
 337                 .y_div = 2,
 338                 .x_div = 2,
 339         },
 340 };
 341
 342 #define NUM_FORMATS ARRAY_SIZE(formats)
 343
 344 static struct rga_fmt *rga_fmt_find(struct v4l2_format *f)
 345 {
 346         unsigned int i;
 347
 348         for (i = 0; i < NUM_FORMATS; i++) {
 349                 if (formats[i].fourcc == f->fmt.pix.pixelformat)
 350                         return &formats[i];
 351         }
 352         return NULL;
 353 }
 354
 355 static struct rga_frame def_frame = {
 356         .width = DEFAULT_WIDTH,
 357         .height = DEFAULT_HEIGHT,
 358         .colorspace = V4L2_COLORSPACE_DEFAULT,
 359         .crop.left = 0,
 360         .crop.top = 0,
 361         .crop.width = DEFAULT_WIDTH,
 362         .crop.height = DEFAULT_HEIGHT,
 363         .fmt = &formats[0],
 364 };
 365
 366 struct rga_frame *rga_get_frame(struct rga_ctx *ctx, enum v4l2_buf_type type)
 367 {
 368         switch (type) {
 369         case V4L2_BUF_TYPE_VIDEO_OUTPUT:
 370                 return &ctx->in;
 371         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 372                 return &ctx->out;
 373         default:
 374                 return ERR_PTR(-EINVAL);
 375         }
 376 }
 377
 378 static int rga_open(struct file *file)
 379 {
 380         struct rockchip_rga *rga = video_drvdata(file);
 381         struct rga_ctx *ctx = NULL;
 382         int ret = 0;
 383
 384         ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
 385         if (!ctx)
 386                 return -ENOMEM;
 387         ctx->rga = rga;
 388         /* Set default formats */
 389         ctx->in = def_frame;
 390         ctx->out = def_frame;
 391
 392         if (mutex_lock_interruptible(&rga->mutex)) {
 393                 kfree(ctx);
 394                 return -ERESTARTSYS;
 395         }
 396         ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(rga->m2m_dev, ctx, &queue_init);
 397         if (IS_ERR(ctx->fh.m2m_ctx)) {
 398                 ret = PTR_ERR(ctx->fh.m2m_ctx);
 399                 mutex_unlock(&rga->mutex);
 400                 kfree(ctx);
 401                 return ret;
 402         }
 403         v4l2_fh_init(&ctx->fh, video_devdata(file));
 404         file->private_data = &ctx->fh;
 405         v4l2_fh_add(&ctx->fh);
 406
 407         rga_setup_ctrls(ctx);
 408
 409         /* Write the default values to the ctx struct */
 410         v4l2_ctrl_handler_setup(&ctx->ctrl_handler);
 411
 412         ctx->fh.ctrl_handler = &ctx->ctrl_handler;
 413         mutex_unlock(&rga->mutex);
 414
 415         return 0;
 416 }
 417
 418 static int rga_release(struct file *file)
 419 {
 420         struct rga_ctx *ctx =
 421                 container_of(file->private_data, struct rga_ctx, fh);
 422         struct rockchip_rga *rga = ctx->rga;
 423
 424         mutex_lock(&rga->mutex);
 425
 426         v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
 427
 428         v4l2_ctrl_handler_free(&ctx->ctrl_handler);
 429         v4l2_fh_del(&ctx->fh);
 430         v4l2_fh_exit(&ctx->fh);
 431         kfree(ctx);
 432
 433         mutex_unlock(&rga->mutex);
 434
 435         return 0;
 436 }
 437
 438 static const struct v4l2_file_operations rga_fops = {
 439         .owner = THIS_MODULE,
 440         .open = rga_open,
 441         .release = rga_release,
 442         .poll = v4l2_m2m_fop_poll,
 443         .unlocked_ioctl = video_ioctl2,
 444         .mmap = v4l2_m2m_fop_mmap,
 445 };
 446
 447 static int
 448 vidioc_querycap(struct file *file, void *priv, struct v4l2_capability *cap)
 449 {
 450         strlcpy(cap->driver, RGA_NAME, sizeof(cap->driver));
 451         strlcpy(cap->card, "rockchip-rga", sizeof(cap->card));
 452         strlcpy(cap->bus_info, "platform:rga", sizeof(cap->bus_info));
 453
 454         return 0;
 455 }
 456
 457 static int vidioc_enum_fmt(struct file *file, void *prv, struct v4l2_fmtdesc *f)
 458 {
 459         struct rga_fmt *fmt;
 460
 461         if (f->index >= NUM_FORMATS)
 462                 return -EINVAL;
 463
 464         fmt = &formats[f->index];
 465         f->pixelformat = fmt->fourcc;
 466
 467         return 0;
 468 }
 469
 470 static int vidioc_g_fmt(struct file *file, void *prv, struct v4l2_format *f)
 471 {
 472         struct rga_ctx *ctx = prv;
 473         struct vb2_queue *vq;
 474         struct rga_frame *frm;
 475
 476         vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
 477         if (!vq)
 478                 return -EINVAL;
 479         frm = rga_get_frame(ctx, f->type);
 480         if (IS_ERR(frm))
 481                 return PTR_ERR(frm);
 482
 483         f->fmt.pix.width = frm->width;
 484         f->fmt.pix.height = frm->height;
 485         f->fmt.pix.field = V4L2_FIELD_NONE;
 486         f->fmt.pix.pixelformat = frm->fmt->fourcc;
 487         f->fmt.pix.bytesperline = frm->stride;
 488         f->fmt.pix.sizeimage = frm->size;
 489         f->fmt.pix.colorspace = frm->colorspace;
 490
 491         return 0;
 492 }
 493
 494 static int vidioc_try_fmt(struct file *file, void *prv, struct v4l2_format *f)
 495 {
 496         struct rga_fmt *fmt;
 497
 498         fmt = rga_fmt_find(f);
 499         if (!fmt) {
 500                 fmt = &formats[0];
 501                 f->fmt.pix.pixelformat = fmt->fourcc;
 502         }
 503
 504         f->fmt.pix.field = V4L2_FIELD_NONE;
 505
 506         if (f->fmt.pix.width > MAX_WIDTH)
 507                 f->fmt.pix.width = MAX_WIDTH;
 508         if (f->fmt.pix.height > MAX_HEIGHT)
 509                 f->fmt.pix.height = MAX_HEIGHT;
 510
 511         if (f->fmt.pix.width < MIN_WIDTH)
 512                 f->fmt.pix.width = MIN_WIDTH;
 513         if (f->fmt.pix.height < MIN_HEIGHT)
 514                 f->fmt.pix.height = MIN_HEIGHT;
 515
 516         if (fmt->hw_format >= RGA_COLOR_FMT_YUV422SP)
 517                 f->fmt.pix.bytesperline = f->fmt.pix.width;
 518         else
 519                 f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
 520
 521         f->fmt.pix.sizeimage =
 522                 f->fmt.pix.height * (f->fmt.pix.width * fmt->depth) >> 3;
 523
 524         return 0;
 525 }
 526
 527 static int vidioc_s_fmt(struct file *file, void *prv, struct v4l2_format *f)
 528 {
 529         struct rga_ctx *ctx = prv;
 530         struct rockchip_rga *rga = ctx->rga;
 531         struct vb2_queue *vq;
 532         struct rga_frame *frm;
 533         struct rga_fmt *fmt;
 534         int ret = 0;
 535
 536         /* Adjust all values accordingly to the hardware capabilities
 537          * and chosen format.
 538          */
 539         ret = vidioc_try_fmt(file, prv, f);
 540         if (ret)
 541                 return ret;
 542         vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
 543         if (vb2_is_busy(vq)) {
 544                 v4l2_err(&rga->v4l2_dev, "queue (%d) bust\n", f->type);
 545                 return -EBUSY;
 546         }
 547         frm = rga_get_frame(ctx, f->type);
 548         if (IS_ERR(frm))
 549                 return PTR_ERR(frm);
 550         fmt = rga_fmt_find(f);
 551         if (!fmt)
 552                 return -EINVAL;
 553         frm->width = f->fmt.pix.width;
 554         frm->height = f->fmt.pix.height;
 555         frm->size = f->fmt.pix.sizeimage;
 556         frm->fmt = fmt;
 557         frm->stride = f->fmt.pix.bytesperline;
 558         frm->colorspace = f->fmt.pix.colorspace;
 559
 560         /* Reset crop settings */
 561         frm->crop.left = 0;
 562         frm->crop.top = 0;
 563         frm->crop.width = frm->width;
 564         frm->crop.height = frm->height;
 565
 566         return 0;
 567 }
 568
 569 static int vidioc_g_selection(struct file *file, void *prv,
 570                               struct v4l2_selection *s)
 571 {
 572         struct rga_ctx *ctx = prv;
 573         struct rga_frame *f;
 574         bool use_frame = false;
 575
 576         f = rga_get_frame(ctx, s->type);
 577         if (IS_ERR(f))
 578                 return PTR_ERR(f);
 579
 580         switch (s->target) {
 581         case V4L2_SEL_TGT_COMPOSE_DEFAULT:
 582         case V4L2_SEL_TGT_COMPOSE_BOUNDS:
 583                 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 584                         return -EINVAL;
 585                 break;
 586         case V4L2_SEL_TGT_CROP_DEFAULT:
 587         case V4L2_SEL_TGT_CROP_BOUNDS:
 588                 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
 589                         return -EINVAL;
 590                 break;
 591         case V4L2_SEL_TGT_COMPOSE:
 592                 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 593                         return -EINVAL;
 594                 use_frame = true;
 595                 break;
 596         case V4L2_SEL_TGT_CROP:
 597                 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
 598                         return -EINVAL;
 599                 use_frame = true;
 600                 break;
 601         default:
 602                 return -EINVAL;
 603         }
 604
 605         if (use_frame) {
 606                 s->r = f->crop;
 607         } else {
 608                 s->r.left = 0;
 609                 s->r.top = 0;
 610                 s->r.width = f->width;
 611                 s->r.height = f->height;
 612         }
 613
 614         return 0;
 615 }
 616
 617 static int vidioc_s_selection(struct file *file, void *prv,
 618                               struct v4l2_selection *s)
 619 {
 620         struct rga_ctx *ctx = prv;
 621         struct rockchip_rga *rga = ctx->rga;
 622         struct rga_frame *f;
 623         int ret = 0;
 624
 625         f = rga_get_frame(ctx, s->type);
 626         if (IS_ERR(f))
 627                 return PTR_ERR(f);
 628
 629         switch (s->target) {
 630         case V4L2_SEL_TGT_COMPOSE:
 631                 /*
 632                  * COMPOSE target is only valid for capture buffer type, return
 633                  * error for output buffer type
 634                  */
 635                 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 636                         return -EINVAL;
 637                 break;
 638         case V4L2_SEL_TGT_CROP:
 639                 /*
 640                  * CROP target is only valid for output buffer type, return
 641                  * error for capture buffer type
 642                  */
 643                 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
 644                         return -EINVAL;
 645                 break;
 646         /*
 647          * bound and default crop/compose targets are invalid targets to
 648          * try/set
 649          */
 650         default:
 651                 return -EINVAL;
 652         }
 653
 654         if (s->r.top < 0 || s->r.left < 0) {
 655                 v4l2_dbg(debug, 1, &rga->v4l2_dev,
 656                          "doesn't support negative values for top & left.\n");
 657                 return -EINVAL;
 658         }
 659
 660         if (s->r.left + s->r.width > f->width ||
 661             s->r.top + s->r.height > f->height ||
 662             s->r.width < MIN_WIDTH || s->r.height < MIN_HEIGHT) {
 663                 v4l2_dbg(debug, 1, &rga->v4l2_dev, "unsupported crop value.\n");
 664                 return -EINVAL;
 665         }
 666
 667         f->crop = s->r;
 668
 669         return ret;
 670 }
 671
 672 static const struct v4l2_ioctl_ops rga_ioctl_ops = {
 673         .vidioc_querycap = vidioc_querycap,
 674
 675         .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt,
 676         .vidioc_g_fmt_vid_cap = vidioc_g_fmt,
 677         .vidioc_try_fmt_vid_cap = vidioc_try_fmt,
 678         .vidioc_s_fmt_vid_cap = vidioc_s_fmt,
 679
 680         .vidioc_enum_fmt_vid_out = vidioc_enum_fmt,
 681         .vidioc_g_fmt_vid_out = vidioc_g_fmt,
 682         .vidioc_try_fmt_vid_out = vidioc_try_fmt,
 683         .vidioc_s_fmt_vid_out = vidioc_s_fmt,
 684
 685         .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
 686         .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
 687         .vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
 688         .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
 689         .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
 690         .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
 691         .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
 692
 693         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
 694         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
 695
 696         .vidioc_streamon = v4l2_m2m_ioctl_streamon,
 697         .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
 698
 699         .vidioc_g_selection = vidioc_g_selection,
 700         .vidioc_s_selection = vidioc_s_selection,
 701 };
 702
 703 static struct video_device rga_videodev = {
 704         .name = "rockchip-rga",
 705         .fops = &rga_fops,
 706         .ioctl_ops = &rga_ioctl_ops,
 707         .minor = -1,
 708         .release = video_device_release,
 709         .vfl_dir = VFL_DIR_M2M,
 710         .device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING,
 711 };
 712
 713 static int rga_enable_clocks(struct rockchip_rga *rga)
 714 {
 715         int ret;
 716
 717         ret = clk_prepare_enable(rga->sclk);
 718         if (ret) {
 719                 dev_err(rga->dev, "Cannot enable rga sclk: %d\n", ret);
 720                 return ret;
 721         }
 722
 723         ret = clk_prepare_enable(rga->aclk);
 724         if (ret) {
 725                 dev_err(rga->dev, "Cannot enable rga aclk: %d\n", ret);
 726                 goto err_disable_sclk;
 727         }
 728
 729         ret = clk_prepare_enable(rga->hclk);
 730         if (ret) {
 731                 dev_err(rga->dev, "Cannot enable rga hclk: %d\n", ret);
 732                 goto err_disable_aclk;
 733         }
 734
 735         return 0;
 736
 737 err_disable_sclk:
 738         clk_disable_unprepare(rga->sclk);
 739 err_disable_aclk:
 740         clk_disable_unprepare(rga->aclk);
 741
 742         return ret;
 743 }
 744
 745 static void rga_disable_clocks(struct rockchip_rga *rga)
 746 {
 747         clk_disable_unprepare(rga->sclk);
 748         clk_disable_unprepare(rga->hclk);
 749         clk_disable_unprepare(rga->aclk);
 750 }
 751
 752 static int rga_parse_dt(struct rockchip_rga *rga)
 753 {
 754         struct reset_control *core_rst, *axi_rst, *ahb_rst;
 755
 756         core_rst = devm_reset_control_get(rga->dev, "core");
 757         if (IS_ERR(core_rst)) {
 758                 dev_err(rga->dev, "failed to get core reset controller\n");
 759                 return PTR_ERR(core_rst);
 760         }
 761
 762         axi_rst = devm_reset_control_get(rga->dev, "axi");
 763         if (IS_ERR(axi_rst)) {
 764                 dev_err(rga->dev, "failed to get axi reset controller\n");
 765                 return PTR_ERR(axi_rst);
 766         }
 767
 768         ahb_rst = devm_reset_control_get(rga->dev, "ahb");
 769         if (IS_ERR(ahb_rst)) {
 770                 dev_err(rga->dev, "failed to get ahb reset controller\n");
 771                 return PTR_ERR(ahb_rst);
 772         }
 773
 774         reset_control_assert(core_rst);
 775         udelay(1);
 776         reset_control_deassert(core_rst);
 777
 778         reset_control_assert(axi_rst);
 779         udelay(1);
 780         reset_control_deassert(axi_rst);
 781
 782         reset_control_assert(ahb_rst);
 783         udelay(1);
 784         reset_control_deassert(ahb_rst);
 785
 786         rga->sclk = devm_clk_get(rga->dev, "sclk");
 787         if (IS_ERR(rga->sclk)) {
 788                 dev_err(rga->dev, "failed to get sclk clock\n");
 789                 return PTR_ERR(rga->sclk);
 790         }
 791
 792         rga->aclk = devm_clk_get(rga->dev, "aclk");
 793         if (IS_ERR(rga->aclk)) {
 794                 dev_err(rga->dev, "failed to get aclk clock\n");
 795                 return PTR_ERR(rga->aclk);
 796         }
 797
 798         rga->hclk = devm_clk_get(rga->dev, "hclk");
 799         if (IS_ERR(rga->hclk)) {
 800                 dev_err(rga->dev, "failed to get hclk clock\n");
 801                 return PTR_ERR(rga->hclk);
 802         }
 803
 804         return 0;
 805 }
 806
 807 static int rga_probe(struct platform_device *pdev)
 808 {
 809         struct rockchip_rga *rga;
 810         struct video_device *vfd;
 811         struct resource *res;
 812         int ret = 0;
 813         int irq;
 814
 815         if (!pdev->dev.of_node)
 816                 return -ENODEV;
 817
 818         rga = devm_kzalloc(&pdev->dev, sizeof(*rga), GFP_KERNEL);
 819         if (!rga)
 820                 return -ENOMEM;
 821
 822         rga->dev = &pdev->dev;
 823         spin_lock_init(&rga->ctrl_lock);
 824         mutex_init(&rga->mutex);
 825
 826         ret = rga_parse_dt(rga);
 827         if (ret)
 828                 dev_err(&pdev->dev, "Unable to parse OF data\n");
 829
 830         pm_runtime_enable(rga->dev);
 831
 832         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 833
 834         rga->regs = devm_ioremap_resource(rga->dev, res);
 835         if (IS_ERR(rga->regs)) {
 836                 ret = PTR_ERR(rga->regs);
 837                 goto err_put_clk;
 838         }
 839
 840         irq = platform_get_irq(pdev, 0);
 841         if (irq < 0) {
 842                 dev_err(rga->dev, "failed to get irq\n");
 843                 ret = irq;
 844                 goto err_put_clk;
 845         }
 846
 847         ret = devm_request_irq(rga->dev, irq, rga_isr, 0,
 848                                dev_name(rga->dev), rga);
 849         if (ret < 0) {
 850                 dev_err(rga->dev, "failed to request irq\n");
 851                 goto err_put_clk;
 852         }
 853
 854         ret = v4l2_device_register(&pdev->dev, &rga->v4l2_dev);
 855         if (ret)
 856                 goto err_put_clk;
 857         vfd = video_device_alloc();
 858         if (!vfd) {
 859                 v4l2_err(&rga->v4l2_dev, "Failed to allocate video device\n");
 860                 ret = -ENOMEM;
 861                 goto unreg_v4l2_dev;
 862         }
 863         *vfd = rga_videodev;
 864         vfd->lock = &rga->mutex;
 865         vfd->v4l2_dev = &rga->v4l2_dev;
 866
 867         video_set_drvdata(vfd, rga);
 868         rga->vfd = vfd;
 869
 870         platform_set_drvdata(pdev, rga);
 871         rga->m2m_dev = v4l2_m2m_init(&rga_m2m_ops);
 872         if (IS_ERR(rga->m2m_dev)) {
 873                 v4l2_err(&rga->v4l2_dev, "Failed to init mem2mem device\n");
 874                 ret = PTR_ERR(rga->m2m_dev);
 875                 goto unreg_video_dev;
 876         }
 877
 878         pm_runtime_get_sync(rga->dev);
 879
 880         rga->version.major = (rga_read(rga, RGA_VERSION_INFO) >> 24) & 0xFF;
 881         rga->version.minor = (rga_read(rga, RGA_VERSION_INFO) >> 20) & 0x0F;
 882
 883         v4l2_info(&rga->v4l2_dev, "HW Version: 0x%02x.%02x\n",
 884                   rga->version.major, rga->version.minor);
 885
 886         pm_runtime_put(rga->dev);
 887
 888         /* Create CMD buffer */
 889         rga->cmdbuf_virt = dma_alloc_attrs(rga->dev, RGA_CMDBUF_SIZE,
 890                                            &rga->cmdbuf_phy, GFP_KERNEL,
 891                                            DMA_ATTR_WRITE_COMBINE);
 892
 893         rga->src_mmu_pages =
 894                 (unsigned int *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, 3);
 895         rga->dst_mmu_pages =
 896                 (unsigned int *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, 3);
 897
 898         def_frame.stride = (def_frame.width * def_frame.fmt->depth) >> 3;
 899         def_frame.size = def_frame.stride * def_frame.height;
 900
 901         ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1);
 902         if (ret) {
 903                 v4l2_err(&rga->v4l2_dev, "Failed to register video device\n");
 904                 goto rel_vdev;
 905         }
 906
 907         v4l2_info(&rga->v4l2_dev, "Registered %s as /dev/%s\n",
 908                   vfd->name, video_device_node_name(vfd));
 909
 910         return 0;
 911
 912 rel_vdev:
 913         video_device_release(vfd);
 914 unreg_video_dev:
 915         video_unregister_device(rga->vfd);
 916 unreg_v4l2_dev:
 917         v4l2_device_unregister(&rga->v4l2_dev);
 918 err_put_clk:
 919         pm_runtime_disable(rga->dev);
 920
 921         return ret;
 922 }
 923
 924 static int rga_remove(struct platform_device *pdev)
 925 {
 926         struct rockchip_rga *rga = platform_get_drvdata(pdev);
 927
 928         dma_free_attrs(rga->dev, RGA_CMDBUF_SIZE, rga->cmdbuf_virt,
 929                        rga->cmdbuf_phy, DMA_ATTR_WRITE_COMBINE);
 930
 931         free_pages((unsigned long)rga->src_mmu_pages, 3);
 932         free_pages((unsigned long)rga->dst_mmu_pages, 3);
 933
 934         v4l2_info(&rga->v4l2_dev, "Removing\n");
 935
 936         v4l2_m2m_release(rga->m2m_dev);
 937         video_unregister_device(rga->vfd);
 938         v4l2_device_unregister(&rga->v4l2_dev);
 939
 940         pm_runtime_disable(rga->dev);
 941
 942         return 0;
 943 }
 944
 945 static int __maybe_unused rga_runtime_suspend(struct device *dev)
 946 {
 947         struct rockchip_rga *rga = dev_get_drvdata(dev);
 948
 949         rga_disable_clocks(rga);
 950
 951         return 0;
 952 }
 953
 954 static int __maybe_unused rga_runtime_resume(struct device *dev)
 955 {
 956         struct rockchip_rga *rga = dev_get_drvdata(dev);
 957
 958         return rga_enable_clocks(rga);
 959 }
 960
 961 static const struct dev_pm_ops rga_pm = {
 962         SET_RUNTIME_PM_OPS(rga_runtime_suspend,
 963                            rga_runtime_resume, NULL)
 964 };
 965
 966 static const struct of_device_id rockchip_rga_match[] = {
 967         {
 968                 .compatible = "rockchip,rk3288-rga",
 969         },
 970         {
 971                 .compatible = "rockchip,rk3399-rga",
 972         },
 973         {},
 974 };
 975
 976 MODULE_DEVICE_TABLE(of, rockchip_rga_match);
 977
 978 static struct platform_driver rga_pdrv = {
 979         .probe = rga_probe,
 980         .remove = rga_remove,
 981         .driver = {
 982                 .name = RGA_NAME,
 983                 .pm = &rga_pm,
 984                 .of_match_table = rockchip_rga_match,
 985         },
 986 };
 987
 988 module_platform_driver(rga_pdrv);
 989
 990 MODULE_AUTHOR("Jacob Chen <jacob-chen@iotwrt.com>");
 991 MODULE_DESCRIPTION("Rockchip Raster 2d Graphic Acceleration Unit");
 992 MODULE_LICENSE("GPL");