drivers/media/video/s5p-fimc/fimc-core.c

   1 /*
   2  * S5P camera interface (video postprocessor) driver
   3  *
   4  * Copyright (c) 2010 Samsung Electronics
   5  *
   6  * Sylwester Nawrocki, <s.nawrocki@samsung.com>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published
  10  * by the Free Software Foundation, either version 2 of the License,
  11  * or (at your option) any later version.
  12  */
  13
  14 #include <linux/module.h>
  15 #include <linux/kernel.h>
  16 #include <linux/version.h>
  17 #include <linux/types.h>
  18 #include <linux/errno.h>
  19 #include <linux/bug.h>
  20 #include <linux/interrupt.h>
  21 #include <linux/device.h>
  22 #include <linux/platform_device.h>
  23 #include <linux/list.h>
  24 #include <linux/io.h>
  25 #include <linux/slab.h>
  26 #include <linux/clk.h>
  27 #include <media/v4l2-ioctl.h>
  28 #include <media/videobuf-dma-contig.h>
  29
  30 #include "fimc-core.h"
  31
  32 static char *fimc_clock_name[NUM_FIMC_CLOCKS] = { "sclk_fimc", "fimc" };
  33
  34 static struct fimc_fmt fimc_formats[] = {
  35         {
  36                 .name   = "RGB565",
  37                 .fourcc = V4L2_PIX_FMT_RGB565X,
  38                 .depth  = 16,
  39                 .color  = S5P_FIMC_RGB565,
  40                 .buff_cnt = 1,
  41                 .planes_cnt = 1
  42         }, {
  43                 .name   = "BGR666",
  44                 .fourcc = V4L2_PIX_FMT_BGR666,
  45                 .depth  = 32,
  46                 .color  = S5P_FIMC_RGB666,
  47                 .buff_cnt = 1,
  48                 .planes_cnt = 1
  49         }, {
  50                 .name = "XRGB-8-8-8-8, 24 bpp",
  51                 .fourcc = V4L2_PIX_FMT_RGB24,
  52                 .depth = 32,
  53                 .color  = S5P_FIMC_RGB888,
  54                 .buff_cnt = 1,
  55                 .planes_cnt = 1
  56         }, {
  57                 .name   = "YUV 4:2:2 packed, YCbYCr",
  58                 .fourcc = V4L2_PIX_FMT_YUYV,
  59                 .depth  = 16,
  60                 .color  = S5P_FIMC_YCBYCR422,
  61                 .buff_cnt = 1,
  62                 .planes_cnt = 1
  63                 }, {
  64                 .name   = "YUV 4:2:2 packed, CbYCrY",
  65                 .fourcc = V4L2_PIX_FMT_UYVY,
  66                 .depth  = 16,
  67                 .color  = S5P_FIMC_CBYCRY422,
  68                 .buff_cnt = 1,
  69                 .planes_cnt = 1
  70         }, {
  71                 .name   = "YUV 4:2:2 packed, CrYCbY",
  72                 .fourcc = V4L2_PIX_FMT_VYUY,
  73                 .depth  = 16,
  74                 .color  = S5P_FIMC_CRYCBY422,
  75                 .buff_cnt = 1,
  76                 .planes_cnt = 1
  77         }, {
  78                 .name   = "YUV 4:2:2 packed, YCrYCb",
  79                 .fourcc = V4L2_PIX_FMT_YVYU,
  80                 .depth  = 16,
  81                 .color  = S5P_FIMC_YCRYCB422,
  82                 .buff_cnt = 1,
  83                 .planes_cnt = 1
  84         }, {
  85                 .name   = "YUV 4:2:2 planar, Y/Cb/Cr",
  86                 .fourcc = V4L2_PIX_FMT_YUV422P,
  87                 .depth  = 12,
  88                 .color  = S5P_FIMC_YCBCR422,
  89                 .buff_cnt = 1,
  90                 .planes_cnt = 3
  91         }, {
  92                 .name   = "YUV 4:2:2 planar, Y/CbCr",
  93                 .fourcc = V4L2_PIX_FMT_NV16,
  94                 .depth  = 16,
  95                 .color  = S5P_FIMC_YCBCR422,
  96                 .buff_cnt = 1,
  97                 .planes_cnt = 2
  98         }, {
  99                 .name   = "YUV 4:2:2 planar, Y/CrCb",
 100                 .fourcc = V4L2_PIX_FMT_NV61,
 101                 .depth  = 16,
 102                 .color  = S5P_FIMC_RGB565,
 103                 .buff_cnt = 1,
 104                 .planes_cnt = 2
 105         }, {
 106                 .name   = "YUV 4:2:0 planar, YCbCr",
 107                 .fourcc = V4L2_PIX_FMT_YUV420,
 108                 .depth  = 12,
 109                 .color  = S5P_FIMC_YCBCR420,
 110                 .buff_cnt = 1,
 111                 .planes_cnt = 3
 112         }, {
 113                 .name   = "YUV 4:2:0 planar, Y/CbCr",
 114                 .fourcc = V4L2_PIX_FMT_NV12,
 115                 .depth  = 12,
 116                 .color  = S5P_FIMC_YCBCR420,
 117                 .buff_cnt = 1,
 118                 .planes_cnt = 2
 119         }
 120  };
 121
 122 static struct v4l2_queryctrl fimc_ctrls[] = {
 123         {
 124                 .id             = V4L2_CID_HFLIP,
 125                 .type           = V4L2_CTRL_TYPE_BOOLEAN,
 126                 .name           = "Horizontal flip",
 127                 .minimum        = 0,
 128                 .maximum        = 1,
 129                 .default_value  = 0,
 130         },
 131         {
 132                 .id             = V4L2_CID_VFLIP,
 133                 .type           = V4L2_CTRL_TYPE_BOOLEAN,
 134                 .name           = "Vertical flip",
 135                 .minimum        = 0,
 136                 .maximum        = 1,
 137                 .default_value  = 0,
 138         },
 139         {
 140                 .id             = V4L2_CID_ROTATE,
 141                 .type           = V4L2_CTRL_TYPE_INTEGER,
 142                 .name           = "Rotation (CCW)",
 143                 .minimum        = 0,
 144                 .maximum        = 270,
 145                 .step           = 90,
 146                 .default_value  = 0,
 147         },
 148 };
 149
 150
 151 static struct v4l2_queryctrl *get_ctrl(int id)
 152 {
 153         int i;
 154
 155         for (i = 0; i < ARRAY_SIZE(fimc_ctrls); ++i)
 156                 if (id == fimc_ctrls[i].id)
 157                         return &fimc_ctrls[i];
 158         return NULL;
 159 }
 160
 161 static int fimc_check_scaler_ratio(struct v4l2_rect *r, struct fimc_frame *f)
 162 {
 163         if (r->width > f->width) {
 164                 if (f->width > (r->width * SCALER_MAX_HRATIO))
 165                         return -EINVAL;
 166         } else {
 167                 if ((f->width * SCALER_MAX_HRATIO) < r->width)
 168                         return -EINVAL;
 169         }
 170
 171         if (r->height > f->height) {
 172                 if (f->height > (r->height * SCALER_MAX_VRATIO))
 173                         return -EINVAL;
 174         } else {
 175                 if ((f->height * SCALER_MAX_VRATIO) < r->height)
 176                         return -EINVAL;
 177         }
 178
 179         return 0;
 180 }
 181
 182 static int fimc_get_scaler_factor(u32 src, u32 tar, u32 *ratio, u32 *shift)
 183 {
 184         if (src >= tar * 64) {
 185                 return -EINVAL;
 186         } else if (src >= tar * 32) {
 187                 *ratio = 32;
 188                 *shift = 5;
 189         } else if (src >= tar * 16) {
 190                 *ratio = 16;
 191                 *shift = 4;
 192         } else if (src >= tar * 8) {
 193                 *ratio = 8;
 194                 *shift = 3;
 195         } else if (src >= tar * 4) {
 196                 *ratio = 4;
 197                 *shift = 2;
 198         } else if (src >= tar * 2) {
 199                 *ratio = 2;
 200                 *shift = 1;
 201         } else {
 202                 *ratio = 1;
 203                 *shift = 0;
 204         }
 205
 206         return 0;
 207 }
 208
 209 static int fimc_set_scaler_info(struct fimc_ctx *ctx)
 210 {
 211         struct fimc_scaler *sc = &ctx->scaler;
 212         struct fimc_frame *s_frame = &ctx->s_frame;
 213         struct fimc_frame *d_frame = &ctx->d_frame;
 214         int tx, ty, sx, sy;
 215         int ret;
 216
 217         tx = d_frame->width;
 218         ty = d_frame->height;
 219         if (tx <= 0 || ty <= 0) {
 220                 v4l2_err(&ctx->fimc_dev->m2m.v4l2_dev,
 221                         "invalid target size: %d x %d", tx, ty);
 222                 return -EINVAL;
 223         }
 224
 225         sx = s_frame->width;
 226         sy = s_frame->height;
 227         if (sx <= 0 || sy <= 0) {
 228                 err("invalid source size: %d x %d", sx, sy);
 229                 return -EINVAL;
 230         }
 231
 232         sc->real_width = sx;
 233         sc->real_height = sy;
 234         dbg("sx= %d, sy= %d, tx= %d, ty= %d", sx, sy, tx, ty);
 235
 236         ret = fimc_get_scaler_factor(sx, tx, &sc->pre_hratio, &sc->hfactor);
 237         if (ret)
 238                 return ret;
 239
 240         ret = fimc_get_scaler_factor(sy, ty,  &sc->pre_vratio, &sc->vfactor);
 241         if (ret)
 242                 return ret;
 243
 244         sc->pre_dst_width = sx / sc->pre_hratio;
 245         sc->pre_dst_height = sy / sc->pre_vratio;
 246
 247         sc->main_hratio = (sx << 8) / (tx << sc->hfactor);
 248         sc->main_vratio = (sy << 8) / (ty << sc->vfactor);
 249
 250         sc->scaleup_h = (tx >= sx) ? 1 : 0;
 251         sc->scaleup_v = (ty >= sy) ? 1 : 0;
 252
 253         /* check to see if input and output size/format differ */
 254         if (s_frame->fmt->color == d_frame->fmt->color
 255                 && s_frame->width == d_frame->width
 256                 && s_frame->height == d_frame->height)
 257                 sc->copy_mode = 1;
 258         else
 259                 sc->copy_mode = 0;
 260
 261         return 0;
 262 }
 263
 264
 265 static irqreturn_t fimc_isr(int irq, void *priv)
 266 {
 267         struct fimc_vid_buffer *src_buf, *dst_buf;
 268         struct fimc_dev *fimc = (struct fimc_dev *)priv;
 269         struct fimc_ctx *ctx;
 270
 271         BUG_ON(!fimc);
 272         fimc_hw_clear_irq(fimc);
 273
 274         spin_lock(&fimc->slock);
 275
 276         if (test_and_clear_bit(ST_M2M_PEND, &fimc->state)) {
 277                 ctx = v4l2_m2m_get_curr_priv(fimc->m2m.m2m_dev);
 278                 if (!ctx || !ctx->m2m_ctx)
 279                         goto isr_unlock;
 280                 src_buf = v4l2_m2m_src_buf_remove(ctx->m2m_ctx);
 281                 dst_buf = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx);
 282                 if (src_buf && dst_buf) {
 283                         spin_lock(&fimc->irqlock);
 284                         src_buf->vb.state = dst_buf->vb.state =  VIDEOBUF_DONE;
 285                         wake_up(&src_buf->vb.done);
 286                         wake_up(&dst_buf->vb.done);
 287                         spin_unlock(&fimc->irqlock);
 288                         v4l2_m2m_job_finish(fimc->m2m.m2m_dev, ctx->m2m_ctx);
 289                 }
 290         }
 291
 292 isr_unlock:
 293         spin_unlock(&fimc->slock);
 294         return IRQ_HANDLED;
 295 }
 296
 297 /* The color format (planes_cnt, buff_cnt) must be already configured. */
 298 static int fimc_prepare_addr(struct fimc_ctx *ctx,
 299                 struct fimc_vid_buffer *buf, enum v4l2_buf_type type)
 300 {
 301         struct fimc_frame *frame;
 302         struct fimc_addr *paddr;
 303         u32 pix_size;
 304         int ret = 0;
 305
 306         frame = ctx_m2m_get_frame(ctx, type);
 307         if (IS_ERR(frame))
 308                 return PTR_ERR(frame);
 309         paddr = &frame->paddr;
 310
 311         if (!buf)
 312                 return -EINVAL;
 313
 314         pix_size = frame->width * frame->height;
 315
 316         dbg("buff_cnt= %d, planes_cnt= %d, frame->size= %d, pix_size= %d",
 317                 frame->fmt->buff_cnt, frame->fmt->planes_cnt,
 318                 frame->size, pix_size);
 319
 320         if (frame->fmt->buff_cnt == 1) {
 321                 paddr->y = videobuf_to_dma_contig(&buf->vb);
 322                 switch (frame->fmt->planes_cnt) {
 323                 case 1:
 324                         paddr->cb = 0;
 325                         paddr->cr = 0;
 326                         break;
 327                 case 2:
 328                         /* decompose Y into Y/Cb */
 329                         paddr->cb = (u32)(paddr->y + pix_size);
 330                         paddr->cr = 0;
 331                         break;
 332                 case 3:
 333                         paddr->cb = (u32)(paddr->y + pix_size);
 334                         /* decompose Y into Y/Cb/Cr */
 335                         if (S5P_FIMC_YCBCR420 == frame->fmt->color)
 336                                 paddr->cr = (u32)(paddr->cb
 337                                                 + (pix_size >> 2));
 338                         else /* 422 */
 339                                 paddr->cr = (u32)(paddr->cb
 340                                                 + (pix_size >> 1));
 341                         break;
 342                 default:
 343                         return -EINVAL;
 344                 }
 345         }
 346
 347         dbg("PHYS_ADDR: type= %d, y= 0x%X  cb= 0x%X cr= 0x%X ret= %d",
 348         type, paddr->y, paddr->cb, paddr->cr, ret);
 349
 350         return ret;
 351 }
 352
 353 /* Set order for 1 and 2 plane YCBCR 4:2:2 formats. */
 354 static void fimc_set_yuv_order(struct fimc_ctx *ctx)
 355 {
 356         /* The one only mode supported in SoC. */
 357         ctx->in_order_2p = S5P_FIMC_LSB_CRCB;
 358         ctx->out_order_2p = S5P_FIMC_LSB_CRCB;
 359
 360         /* Set order for 1 plane input formats. */
 361         switch (ctx->s_frame.fmt->color) {
 362         case S5P_FIMC_YCRYCB422:
 363                 ctx->in_order_1p = S5P_FIMC_IN_YCRYCB;
 364                 break;
 365         case S5P_FIMC_CBYCRY422:
 366                 ctx->in_order_1p = S5P_FIMC_IN_CBYCRY;
 367                 break;
 368         case S5P_FIMC_CRYCBY422:
 369                 ctx->in_order_1p = S5P_FIMC_IN_CRYCBY;
 370                 break;
 371         case S5P_FIMC_YCBYCR422:
 372         default:
 373                 ctx->in_order_1p = S5P_FIMC_IN_YCBYCR;
 374                 break;
 375         }
 376         dbg("ctx->in_order_1p= %d", ctx->in_order_1p);
 377
 378         switch (ctx->d_frame.fmt->color) {
 379         case S5P_FIMC_YCRYCB422:
 380                 ctx->out_order_1p = S5P_FIMC_OUT_YCRYCB;
 381                 break;
 382         case S5P_FIMC_CBYCRY422:
 383                 ctx->out_order_1p = S5P_FIMC_OUT_CBYCRY;
 384                 break;
 385         case S5P_FIMC_CRYCBY422:
 386                 ctx->out_order_1p = S5P_FIMC_OUT_CRYCBY;
 387                 break;
 388         case S5P_FIMC_YCBYCR422:
 389         default:
 390                 ctx->out_order_1p = S5P_FIMC_OUT_YCBYCR;
 391                 break;
 392         }
 393         dbg("ctx->out_order_1p= %d", ctx->out_order_1p);
 394 }
 395
 396 static void fimc_prepare_dma_offset(struct fimc_ctx *ctx, struct fimc_frame *f)
 397 {
 398         struct samsung_fimc_variant *variant = ctx->fimc_dev->variant;
 399
 400         f->dma_offset.y_h = f->offs_h;
 401         if (!variant->pix_hoff)
 402                 f->dma_offset.y_h *= (f->fmt->depth >> 3);
 403
 404         f->dma_offset.y_v = f->offs_v;
 405
 406         f->dma_offset.cb_h = f->offs_h;
 407         f->dma_offset.cb_v = f->offs_v;
 408
 409         f->dma_offset.cr_h = f->offs_h;
 410         f->dma_offset.cr_v = f->offs_v;
 411
 412         if (!variant->pix_hoff) {
 413                 if (f->fmt->planes_cnt == 3) {
 414                         f->dma_offset.cb_h >>= 1;
 415                         f->dma_offset.cr_h >>= 1;
 416                 }
 417                 if (f->fmt->color == S5P_FIMC_YCBCR420) {
 418                         f->dma_offset.cb_v >>= 1;
 419                         f->dma_offset.cr_v >>= 1;
 420                 }
 421         }
 422
 423         dbg("in_offset: color= %d, y_h= %d, y_v= %d",
 424             f->fmt->color, f->dma_offset.y_h, f->dma_offset.y_v);
 425 }
 426
 427 /**
 428  * fimc_prepare_config - check dimensions, operation and color mode
 429  *                       and pre-calculate offset and the scaling coefficients.
 430  *
 431  * @ctx: hardware context information
 432  * @flags: flags indicating which parameters to check/update
 433  *
 434  * Return: 0 if dimensions are valid or non zero otherwise.
 435  */
 436 static int fimc_prepare_config(struct fimc_ctx *ctx, u32 flags)
 437 {
 438         struct fimc_frame *s_frame, *d_frame;
 439         struct fimc_vid_buffer *buf = NULL;
 440         int ret = 0;
 441
 442         s_frame = &ctx->s_frame;
 443         d_frame = &ctx->d_frame;
 444
 445         if (flags & FIMC_PARAMS) {
 446                 if ((ctx->out_path == FIMC_DMA) &&
 447                         (ctx->rotation == 90 || ctx->rotation == 270)) {
 448                         swap(d_frame->f_width, d_frame->f_height);
 449                         swap(d_frame->width, d_frame->height);
 450                 }
 451
 452                 /* Prepare the DMA offset ratios for scaler. */
 453                 fimc_prepare_dma_offset(ctx, &ctx->s_frame);
 454                 fimc_prepare_dma_offset(ctx, &ctx->d_frame);
 455
 456                 if (s_frame->height > (SCALER_MAX_VRATIO * d_frame->height) ||
 457                     s_frame->width > (SCALER_MAX_HRATIO * d_frame->width)) {
 458                         err("out of scaler range");
 459                         return -EINVAL;
 460                 }
 461                 fimc_set_yuv_order(ctx);
 462         }
 463
 464         /* Input DMA mode is not allowed when the scaler is disabled. */
 465         ctx->scaler.enabled = 1;
 466
 467         if (flags & FIMC_SRC_ADDR) {
 468                 buf = v4l2_m2m_next_src_buf(ctx->m2m_ctx);
 469                 ret = fimc_prepare_addr(ctx, buf,
 470                         V4L2_BUF_TYPE_VIDEO_OUTPUT);
 471                 if (ret)
 472                         return ret;
 473         }
 474
 475         if (flags & FIMC_DST_ADDR) {
 476                 buf = v4l2_m2m_next_dst_buf(ctx->m2m_ctx);
 477                 ret = fimc_prepare_addr(ctx, buf,
 478                         V4L2_BUF_TYPE_VIDEO_CAPTURE);
 479         }
 480
 481         return ret;
 482 }
 483
 484 static void fimc_dma_run(void *priv)
 485 {
 486         struct fimc_ctx *ctx = priv;
 487         struct fimc_dev *fimc;
 488         unsigned long flags;
 489         u32 ret;
 490
 491         if (WARN(!ctx, "null hardware context"))
 492                 return;
 493
 494         fimc = ctx->fimc_dev;
 495
 496         spin_lock_irqsave(&ctx->slock, flags);
 497         set_bit(ST_M2M_PEND, &fimc->state);
 498
 499         ctx->state |= (FIMC_SRC_ADDR | FIMC_DST_ADDR);
 500         ret = fimc_prepare_config(ctx, ctx->state);
 501         if (ret) {
 502                 err("general configuration error");
 503                 goto dma_unlock;
 504         }
 505
 506         if (fimc->m2m.ctx != ctx)
 507                 ctx->state |= FIMC_PARAMS;
 508
 509         fimc_hw_set_input_addr(fimc, &ctx->s_frame.paddr);
 510
 511         if (ctx->state & FIMC_PARAMS) {
 512                 fimc_hw_set_input_path(ctx);
 513                 fimc_hw_set_in_dma(ctx);
 514                 if (fimc_set_scaler_info(ctx)) {
 515                         err("scaler configuration error");
 516                         goto dma_unlock;
 517                 }
 518                 fimc_hw_set_prescaler(ctx);
 519                 fimc_hw_set_scaler(ctx);
 520                 fimc_hw_set_target_format(ctx);
 521                 fimc_hw_set_rotation(ctx);
 522                 fimc_hw_set_effect(ctx);
 523         }
 524
 525         fimc_hw_set_output_path(ctx);
 526         if (ctx->state & (FIMC_DST_ADDR | FIMC_PARAMS))
 527                 fimc_hw_set_output_addr(fimc, &ctx->d_frame.paddr);
 528
 529         if (ctx->state & FIMC_PARAMS)
 530                 fimc_hw_set_out_dma(ctx);
 531
 532         if (ctx->scaler.enabled)
 533                 fimc_hw_start_scaler(fimc);
 534         fimc_hw_en_capture(ctx);
 535
 536         ctx->state = 0;
 537         fimc_hw_start_in_dma(fimc);
 538
 539         fimc->m2m.ctx = ctx;
 540
 541 dma_unlock:
 542         spin_unlock_irqrestore(&ctx->slock, flags);
 543 }
 544
 545 static void fimc_job_abort(void *priv)
 546 {
 547         /* Nothing done in job_abort. */
 548 }
 549
 550 static void fimc_buf_release(struct videobuf_queue *vq,
 551                                     struct videobuf_buffer *vb)
 552 {
 553         videobuf_dma_contig_free(vq, vb);
 554         vb->state = VIDEOBUF_NEEDS_INIT;
 555 }
 556
 557 static int fimc_buf_setup(struct videobuf_queue *vq, unsigned int *count,
 558                                 unsigned int *size)
 559 {
 560         struct fimc_ctx *ctx = vq->priv_data;
 561         struct fimc_frame *frame;
 562
 563         frame = ctx_m2m_get_frame(ctx, vq->type);
 564         if (IS_ERR(frame))
 565                 return PTR_ERR(frame);
 566
 567         *size = (frame->width * frame->height * frame->fmt->depth) >> 3;
 568         if (0 == *count)
 569                 *count = 1;
 570         return 0;
 571 }
 572
 573 static int fimc_buf_prepare(struct videobuf_queue *vq,
 574                 struct videobuf_buffer *vb, enum v4l2_field field)
 575 {
 576         struct fimc_ctx *ctx = vq->priv_data;
 577         struct v4l2_device *v4l2_dev = &ctx->fimc_dev->m2m.v4l2_dev;
 578         struct fimc_frame *frame;
 579         int ret;
 580
 581         frame = ctx_m2m_get_frame(ctx, vq->type);
 582         if (IS_ERR(frame))
 583                 return PTR_ERR(frame);
 584
 585         if (vb->baddr) {
 586                 if (vb->bsize < frame->size) {
 587                         v4l2_err(v4l2_dev,
 588                                 "User-provided buffer too small (%d < %d)\n",
 589                                  vb->bsize, frame->size);
 590                         WARN_ON(1);
 591                         return -EINVAL;
 592                 }
 593         } else if (vb->state != VIDEOBUF_NEEDS_INIT
 594                    && vb->bsize < frame->size) {
 595                 return -EINVAL;
 596         }
 597
 598         vb->width       = frame->width;
 599         vb->height      = frame->height;
 600         vb->bytesperline = (frame->width * frame->fmt->depth) >> 3;
 601         vb->size        = frame->size;
 602         vb->field       = field;
 603
 604         if (VIDEOBUF_NEEDS_INIT == vb->state) {
 605                 ret = videobuf_iolock(vq, vb, NULL);
 606                 if (ret) {
 607                         v4l2_err(v4l2_dev, "Iolock failed\n");
 608                         fimc_buf_release(vq, vb);
 609                         return ret;
 610                 }
 611         }
 612         vb->state = VIDEOBUF_PREPARED;
 613
 614         return 0;
 615 }
 616
 617 static void fimc_buf_queue(struct videobuf_queue *vq,
 618                                   struct videobuf_buffer *vb)
 619 {
 620         struct fimc_ctx *ctx = vq->priv_data;
 621         v4l2_m2m_buf_queue(ctx->m2m_ctx, vq, vb);
 622 }
 623
 624 static struct videobuf_queue_ops fimc_qops = {
 625         .buf_setup      = fimc_buf_setup,
 626         .buf_prepare    = fimc_buf_prepare,
 627         .buf_queue      = fimc_buf_queue,
 628         .buf_release    = fimc_buf_release,
 629 };
 630
 631 static int fimc_m2m_querycap(struct file *file, void *priv,
 632                            struct v4l2_capability *cap)
 633 {
 634         struct fimc_ctx *ctx = file->private_data;
 635         struct fimc_dev *fimc = ctx->fimc_dev;
 636
 637         strncpy(cap->driver, fimc->pdev->name, sizeof(cap->driver) - 1);
 638         strncpy(cap->card, fimc->pdev->name, sizeof(cap->card) - 1);
 639         cap->bus_info[0] = 0;
 640         cap->version = KERNEL_VERSION(1, 0, 0);
 641         cap->capabilities = V4L2_CAP_STREAMING |
 642                 V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT;
 643
 644         return 0;
 645 }
 646
 647 static int fimc_m2m_enum_fmt(struct file *file, void *priv,
 648                                 struct v4l2_fmtdesc *f)
 649 {
 650         struct fimc_fmt *fmt;
 651
 652         if (f->index >= ARRAY_SIZE(fimc_formats))
 653                 return -EINVAL;
 654
 655         fmt = &fimc_formats[f->index];
 656         strncpy(f->description, fmt->name, sizeof(f->description) - 1);
 657         f->pixelformat = fmt->fourcc;
 658         return 0;
 659 }
 660
 661 static int fimc_m2m_g_fmt(struct file *file, void *priv, struct v4l2_format *f)
 662 {
 663         struct fimc_ctx *ctx = priv;
 664         struct fimc_frame *frame;
 665
 666         frame = ctx_m2m_get_frame(ctx, f->type);
 667         if (IS_ERR(frame))
 668                 return PTR_ERR(frame);
 669
 670         f->fmt.pix.width        = frame->width;
 671         f->fmt.pix.height       = frame->height;
 672         f->fmt.pix.field        = V4L2_FIELD_NONE;
 673         f->fmt.pix.pixelformat  = frame->fmt->fourcc;
 674
 675         return 0;
 676 }
 677
 678 static struct fimc_fmt *find_format(struct v4l2_format *f)
 679 {
 680         struct fimc_fmt *fmt;
 681         unsigned int i;
 682
 683         for (i = 0; i < ARRAY_SIZE(fimc_formats); ++i) {
 684                 fmt = &fimc_formats[i];
 685                 if (fmt->fourcc == f->fmt.pix.pixelformat)
 686                         break;
 687         }
 688         if (i == ARRAY_SIZE(fimc_formats))
 689                 return NULL;
 690
 691         return fmt;
 692 }
 693
 694 static int fimc_m2m_try_fmt(struct file *file, void *priv,
 695                              struct v4l2_format *f)
 696 {
 697         struct fimc_fmt *fmt;
 698         u32 max_width, max_height, mod_x, mod_y;
 699         struct fimc_ctx *ctx = priv;
 700         struct fimc_dev *fimc = ctx->fimc_dev;
 701         struct v4l2_pix_format *pix = &f->fmt.pix;
 702         struct samsung_fimc_variant *variant = fimc->variant;
 703
 704         fmt = find_format(f);
 705         if (!fmt) {
 706                 v4l2_err(&fimc->m2m.v4l2_dev,
 707                          "Fourcc format (0x%X) invalid.\n",  pix->pixelformat);
 708                 return -EINVAL;
 709         }
 710
 711         if (pix->field == V4L2_FIELD_ANY)
 712                 pix->field = V4L2_FIELD_NONE;
 713         else if (V4L2_FIELD_NONE != pix->field)
 714                 return -EINVAL;
 715
 716         if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
 717                 max_width = variant->scaler_dis_w;
 718                 max_height = variant->scaler_dis_w;
 719                 mod_x = variant->min_inp_pixsize;
 720                 mod_y = variant->min_inp_pixsize;
 721         } else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
 722                 max_width = variant->out_rot_dis_w;
 723                 max_height = variant->out_rot_dis_w;
 724                 mod_x = variant->min_out_pixsize;
 725                 mod_y = variant->min_out_pixsize;
 726         } else {
 727                 err("Wrong stream type (%d)", f->type);
 728                 return -EINVAL;
 729         }
 730
 731         dbg("max_w= %d, max_h= %d", max_width, max_height);
 732
 733         if (pix->height > max_height)
 734                 pix->height = max_height;
 735         if (pix->width > max_width)
 736                 pix->width = max_width;
 737
 738         if (tiled_fmt(fmt)) {
 739                 mod_x = 64; /* 64x32 tile */
 740                 mod_y = 32;
 741         }
 742
 743         dbg("mod_x= 0x%X, mod_y= 0x%X", mod_x, mod_y);
 744
 745         pix->width = (pix->width == 0) ? mod_x : ALIGN(pix->width, mod_x);
 746         pix->height = (pix->height == 0) ? mod_y : ALIGN(pix->height, mod_y);
 747
 748         if (pix->bytesperline == 0 ||
 749             pix->bytesperline * 8 / fmt->depth > pix->width)
 750                 pix->bytesperline = (pix->width * fmt->depth) >> 3;
 751
 752         if (pix->sizeimage == 0)
 753                 pix->sizeimage = pix->height * pix->bytesperline;
 754
 755         dbg("pix->bytesperline= %d, fmt->depth= %d",
 756             pix->bytesperline, fmt->depth);
 757
 758         return 0;
 759 }
 760
 761
 762 static int fimc_m2m_s_fmt(struct file *file, void *priv, struct v4l2_format *f)
 763 {
 764         struct fimc_ctx *ctx = priv;
 765         struct v4l2_device *v4l2_dev = &ctx->fimc_dev->m2m.v4l2_dev;
 766         struct videobuf_queue *src_vq, *dst_vq;
 767         struct fimc_frame *frame;
 768         struct v4l2_pix_format *pix;
 769         unsigned long flags;
 770         int ret = 0;
 771
 772         BUG_ON(!ctx);
 773
 774         ret = fimc_m2m_try_fmt(file, priv, f);
 775         if (ret)
 776                 return ret;
 777
 778         mutex_lock(&ctx->fimc_dev->lock);
 779
 780         src_vq = v4l2_m2m_get_src_vq(ctx->m2m_ctx);
 781         dst_vq = v4l2_m2m_get_dst_vq(ctx->m2m_ctx);
 782
 783         mutex_lock(&src_vq->vb_lock);
 784         mutex_lock(&dst_vq->vb_lock);
 785
 786         if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
 787                 if (videobuf_queue_is_busy(src_vq)) {
 788                         v4l2_err(v4l2_dev, "%s queue busy\n", __func__);
 789                         ret = -EBUSY;
 790                         goto s_fmt_out;
 791                 }
 792                 frame = &ctx->s_frame;
 793                 spin_lock_irqsave(&ctx->slock, flags);
 794                 ctx->state |= FIMC_SRC_FMT;
 795                 spin_unlock_irqrestore(&ctx->slock, flags);
 796
 797         } else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
 798                 if (videobuf_queue_is_busy(dst_vq)) {
 799                         v4l2_err(v4l2_dev, "%s queue busy\n", __func__);
 800                         ret = -EBUSY;
 801                         goto s_fmt_out;
 802                 }
 803                 frame = &ctx->d_frame;
 804                 spin_lock_irqsave(&ctx->slock, flags);
 805                 ctx->state |= FIMC_DST_FMT;
 806                 spin_unlock_irqrestore(&ctx->slock, flags);
 807         } else {
 808                 v4l2_err(&ctx->fimc_dev->m2m.v4l2_dev,
 809                          "Wrong buffer/video queue type (%d)\n", f->type);
 810                 ret = -EINVAL;
 811                 goto s_fmt_out;
 812         }
 813
 814         pix = &f->fmt.pix;
 815         frame->fmt = find_format(f);
 816         if (!frame->fmt) {
 817                 ret = -EINVAL;
 818                 goto s_fmt_out;
 819         }
 820
 821         frame->f_width = pix->bytesperline * 8 / frame->fmt->depth;
 822         frame->f_height = pix->sizeimage/pix->bytesperline;
 823         frame->width = pix->width;
 824         frame->height = pix->height;
 825         frame->o_width = pix->width;
 826         frame->o_height = pix->height;
 827         frame->offs_h = 0;
 828         frame->offs_v = 0;
 829         frame->size = (pix->width * pix->height * frame->fmt->depth) >> 3;
 830         src_vq->field = dst_vq->field = pix->field;
 831         spin_lock_irqsave(&ctx->slock, flags);
 832         ctx->state |= FIMC_PARAMS;
 833         spin_unlock_irqrestore(&ctx->slock, flags);
 834
 835         dbg("f_width= %d, f_height= %d", frame->f_width, frame->f_height);
 836
 837 s_fmt_out:
 838         mutex_unlock(&dst_vq->vb_lock);
 839         mutex_unlock(&src_vq->vb_lock);
 840         mutex_unlock(&ctx->fimc_dev->lock);
 841         return ret;
 842 }
 843
 844 static int fimc_m2m_reqbufs(struct file *file, void *priv,
 845                           struct v4l2_requestbuffers *reqbufs)
 846 {
 847         struct fimc_ctx *ctx = priv;
 848         return v4l2_m2m_reqbufs(file, ctx->m2m_ctx, reqbufs);
 849 }
 850
 851 static int fimc_m2m_querybuf(struct file *file, void *priv,
 852                            struct v4l2_buffer *buf)
 853 {
 854         struct fimc_ctx *ctx = priv;
 855         return v4l2_m2m_querybuf(file, ctx->m2m_ctx, buf);
 856 }
 857
 858 static int fimc_m2m_qbuf(struct file *file, void *priv,
 859                           struct v4l2_buffer *buf)
 860 {
 861         struct fimc_ctx *ctx = priv;
 862
 863         return v4l2_m2m_qbuf(file, ctx->m2m_ctx, buf);
 864 }
 865
 866 static int fimc_m2m_dqbuf(struct file *file, void *priv,
 867                            struct v4l2_buffer *buf)
 868 {
 869         struct fimc_ctx *ctx = priv;
 870         return v4l2_m2m_dqbuf(file, ctx->m2m_ctx, buf);
 871 }
 872
 873 static int fimc_m2m_streamon(struct file *file, void *priv,
 874                            enum v4l2_buf_type type)
 875 {
 876         struct fimc_ctx *ctx = priv;
 877         return v4l2_m2m_streamon(file, ctx->m2m_ctx, type);
 878 }
 879
 880 static int fimc_m2m_streamoff(struct file *file, void *priv,
 881                             enum v4l2_buf_type type)
 882 {
 883         struct fimc_ctx *ctx = priv;
 884         return v4l2_m2m_streamoff(file, ctx->m2m_ctx, type);
 885 }
 886
 887 int fimc_m2m_queryctrl(struct file *file, void *priv,
 888                             struct v4l2_queryctrl *qc)
 889 {
 890         struct v4l2_queryctrl *c;
 891         c = get_ctrl(qc->id);
 892         if (!c)
 893                 return -EINVAL;
 894         *qc = *c;
 895         return 0;
 896 }
 897
 898 int fimc_m2m_g_ctrl(struct file *file, void *priv,
 899                          struct v4l2_control *ctrl)
 900 {
 901         struct fimc_ctx *ctx = priv;
 902
 903         switch (ctrl->id) {
 904         case V4L2_CID_HFLIP:
 905                 ctrl->value = (FLIP_X_AXIS & ctx->flip) ? 1 : 0;
 906                 break;
 907         case V4L2_CID_VFLIP:
 908                 ctrl->value = (FLIP_Y_AXIS & ctx->flip) ? 1 : 0;
 909                 break;
 910         case V4L2_CID_ROTATE:
 911                 ctrl->value = ctx->rotation;
 912                 break;
 913         default:
 914                 v4l2_err(&ctx->fimc_dev->m2m.v4l2_dev, "Invalid control\n");
 915                 return -EINVAL;
 916         }
 917         dbg("ctrl->value= %d", ctrl->value);
 918         return 0;
 919 }
 920
 921 static int check_ctrl_val(struct fimc_ctx *ctx,
 922                           struct v4l2_control *ctrl)
 923 {
 924         struct v4l2_queryctrl *c;
 925         c = get_ctrl(ctrl->id);
 926         if (!c)
 927                 return -EINVAL;
 928
 929         if (ctrl->value < c->minimum || ctrl->value > c->maximum
 930                 || (c->step != 0 && ctrl->value % c->step != 0)) {
 931                 v4l2_err(&ctx->fimc_dev->m2m.v4l2_dev,
 932                 "Invalid control value\n");
 933                 return -ERANGE;
 934         }
 935
 936         return 0;
 937 }
 938
 939 int fimc_m2m_s_ctrl(struct file *file, void *priv,
 940                          struct v4l2_control *ctrl)
 941 {
 942         struct fimc_ctx *ctx = priv;
 943         struct samsung_fimc_variant *variant = ctx->fimc_dev->variant;
 944         unsigned long flags;
 945         int ret = 0;
 946
 947         ret = check_ctrl_val(ctx, ctrl);
 948         if (ret)
 949                 return ret;
 950
 951         switch (ctrl->id) {
 952         case V4L2_CID_HFLIP:
 953                 if (ctx->rotation != 0)
 954                         return 0;
 955                 if (ctrl->value)
 956                         ctx->flip |= FLIP_X_AXIS;
 957                 else
 958                         ctx->flip &= ~FLIP_X_AXIS;
 959                 break;
 960
 961         case V4L2_CID_VFLIP:
 962                 if (ctx->rotation != 0)
 963                         return 0;
 964                 if (ctrl->value)
 965                         ctx->flip |= FLIP_Y_AXIS;
 966                 else
 967                         ctx->flip &= ~FLIP_Y_AXIS;
 968                 break;
 969
 970         case V4L2_CID_ROTATE:
 971                 if (ctrl->value == 90 || ctrl->value == 270) {
 972                         if (ctx->out_path == FIMC_LCDFIFO &&
 973                             !variant->has_inp_rot) {
 974                                 return -EINVAL;
 975                         } else if (ctx->in_path == FIMC_DMA &&
 976                                    !variant->has_out_rot) {
 977                                 return -EINVAL;
 978                         }
 979                 }
 980                 ctx->rotation = ctrl->value;
 981                 if (ctrl->value == 180)
 982                         ctx->flip = FLIP_XY_AXIS;
 983                 break;
 984
 985         default:
 986                 v4l2_err(&ctx->fimc_dev->m2m.v4l2_dev, "Invalid control\n");
 987                 return -EINVAL;
 988         }
 989         spin_lock_irqsave(&ctx->slock, flags);
 990         ctx->state |= FIMC_PARAMS;
 991         spin_unlock_irqrestore(&ctx->slock, flags);
 992         return 0;
 993 }
 994
 995
 996 static int fimc_m2m_cropcap(struct file *file, void *fh,
 997                              struct v4l2_cropcap *cr)
 998 {
 999         struct fimc_frame *frame;
1000         struct fimc_ctx *ctx = fh;
1001
1002         frame = ctx_m2m_get_frame(ctx, cr->type);
1003         if (IS_ERR(frame))
1004                 return PTR_ERR(frame);
1005
1006         cr->bounds.left = 0;
1007         cr->bounds.top = 0;
1008         cr->bounds.width = frame->f_width;
1009         cr->bounds.height = frame->f_height;
1010         cr->defrect.left = frame->offs_h;
1011         cr->defrect.top = frame->offs_v;
1012         cr->defrect.width = frame->o_width;
1013         cr->defrect.height = frame->o_height;
1014         return 0;
1015 }
1016
1017 static int fimc_m2m_g_crop(struct file *file, void *fh, struct v4l2_crop *cr)
1018 {
1019         struct fimc_frame *frame;
1020         struct fimc_ctx *ctx = file->private_data;
1021
1022         frame = ctx_m2m_get_frame(ctx, cr->type);
1023         if (IS_ERR(frame))
1024                 return PTR_ERR(frame);
1025
1026         cr->c.left = frame->offs_h;
1027         cr->c.top = frame->offs_v;
1028         cr->c.width = frame->width;
1029         cr->c.height = frame->height;
1030
1031         return 0;
1032 }
1033
1034 static int fimc_m2m_s_crop(struct file *file, void *fh, struct v4l2_crop *cr)
1035 {
1036         struct fimc_ctx *ctx = file->private_data;
1037         struct fimc_dev *fimc = ctx->fimc_dev;
1038         unsigned long flags;
1039         struct fimc_frame *f;
1040         u32 min_size;
1041         int ret = 0;
1042
1043         if (cr->c.top < 0 || cr->c.left < 0) {
1044                 v4l2_err(&fimc->m2m.v4l2_dev,
1045                         "doesn't support negative values for top & left\n");
1046                 return -EINVAL;
1047         }
1048
1049         if (cr->c.width  <= 0 || cr->c.height <= 0) {
1050                 v4l2_err(&fimc->m2m.v4l2_dev,
1051                         "crop width and height must be greater than 0\n");
1052                 return -EINVAL;
1053         }
1054
1055         f = ctx_m2m_get_frame(ctx, cr->type);
1056         if (IS_ERR(f))
1057                 return PTR_ERR(f);
1058
1059         /* Adjust to required pixel boundary. */
1060         min_size = (cr->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) ?
1061                 fimc->variant->min_inp_pixsize : fimc->variant->min_out_pixsize;
1062
1063         cr->c.width = round_down(cr->c.width, min_size);
1064         cr->c.height = round_down(cr->c.height, min_size);
1065         cr->c.left = round_down(cr->c.left + 1, min_size);
1066         cr->c.top = round_down(cr->c.top + 1, min_size);
1067
1068         if ((cr->c.left + cr->c.width > f->o_width)
1069                 || (cr->c.top + cr->c.height > f->o_height)) {
1070                 v4l2_err(&fimc->m2m.v4l2_dev, "Error in S_CROP params\n");
1071                 return -EINVAL;
1072         }
1073
1074         spin_lock_irqsave(&ctx->slock, flags);
1075         if ((ctx->state & FIMC_SRC_FMT) && (ctx->state & FIMC_DST_FMT)) {
1076                 /* Check for the pixel scaling ratio when cropping input img. */
1077                 if (cr->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1078                         ret = fimc_check_scaler_ratio(&cr->c, &ctx->d_frame);
1079                 else if (cr->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1080                         ret = fimc_check_scaler_ratio(&cr->c, &ctx->s_frame);
1081
1082                 if (ret) {
1083                         spin_unlock_irqrestore(&ctx->slock, flags);
1084                         v4l2_err(&fimc->m2m.v4l2_dev,  "Out of scaler range");
1085                         return -EINVAL;
1086                 }
1087         }
1088         ctx->state |= FIMC_PARAMS;
1089         spin_unlock_irqrestore(&ctx->slock, flags);
1090
1091         f->offs_h = cr->c.left;
1092         f->offs_v = cr->c.top;
1093         f->width = cr->c.width;
1094         f->height = cr->c.height;
1095         return 0;
1096 }
1097
1098 static const struct v4l2_ioctl_ops fimc_m2m_ioctl_ops = {
1099         .vidioc_querycap                = fimc_m2m_querycap,
1100
1101         .vidioc_enum_fmt_vid_cap        = fimc_m2m_enum_fmt,
1102         .vidioc_enum_fmt_vid_out        = fimc_m2m_enum_fmt,
1103
1104         .vidioc_g_fmt_vid_cap           = fimc_m2m_g_fmt,
1105         .vidioc_g_fmt_vid_out           = fimc_m2m_g_fmt,
1106
1107         .vidioc_try_fmt_vid_cap         = fimc_m2m_try_fmt,
1108         .vidioc_try_fmt_vid_out         = fimc_m2m_try_fmt,
1109
1110         .vidioc_s_fmt_vid_cap           = fimc_m2m_s_fmt,
1111         .vidioc_s_fmt_vid_out           = fimc_m2m_s_fmt,
1112
1113         .vidioc_reqbufs                 = fimc_m2m_reqbufs,
1114         .vidioc_querybuf                = fimc_m2m_querybuf,
1115
1116         .vidioc_qbuf                    = fimc_m2m_qbuf,
1117         .vidioc_dqbuf                   = fimc_m2m_dqbuf,
1118
1119         .vidioc_streamon                = fimc_m2m_streamon,
1120         .vidioc_streamoff               = fimc_m2m_streamoff,
1121
1122         .vidioc_queryctrl               = fimc_m2m_queryctrl,
1123         .vidioc_g_ctrl                  = fimc_m2m_g_ctrl,
1124         .vidioc_s_ctrl                  = fimc_m2m_s_ctrl,
1125
1126         .vidioc_g_crop                  = fimc_m2m_g_crop,
1127         .vidioc_s_crop                  = fimc_m2m_s_crop,
1128         .vidioc_cropcap                 = fimc_m2m_cropcap
1129
1130 };
1131
1132 static void queue_init(void *priv, struct videobuf_queue *vq,
1133                        enum v4l2_buf_type type)
1134 {
1135         struct fimc_ctx *ctx = priv;
1136         struct fimc_dev *fimc = ctx->fimc_dev;
1137
1138         videobuf_queue_dma_contig_init(vq, &fimc_qops,
1139                 fimc->m2m.v4l2_dev.dev,
1140                 &fimc->irqlock, type, V4L2_FIELD_NONE,
1141                 sizeof(struct fimc_vid_buffer), priv);
1142 }
1143
1144 static int fimc_m2m_open(struct file *file)
1145 {
1146         struct fimc_dev *fimc = video_drvdata(file);
1147         struct fimc_ctx *ctx = NULL;
1148         int err = 0;
1149
1150         mutex_lock(&fimc->lock);
1151         fimc->m2m.refcnt++;
1152         set_bit(ST_OUTDMA_RUN, &fimc->state);
1153         mutex_unlock(&fimc->lock);
1154
1155
1156         ctx = kzalloc(sizeof *ctx, GFP_KERNEL);
1157         if (!ctx)
1158                 return -ENOMEM;
1159
1160         file->private_data = ctx;
1161         ctx->fimc_dev = fimc;
1162         /* default format */
1163         ctx->s_frame.fmt = &fimc_formats[0];
1164         ctx->d_frame.fmt = &fimc_formats[0];
1165         /* per user process device context initialization */
1166         ctx->state = 0;
1167         ctx->flags = 0;
1168         ctx->effect.type = S5P_FIMC_EFFECT_ORIGINAL;
1169         ctx->in_path = FIMC_DMA;
1170         ctx->out_path = FIMC_DMA;
1171         spin_lock_init(&ctx->slock);
1172
1173         ctx->m2m_ctx = v4l2_m2m_ctx_init(ctx, fimc->m2m.m2m_dev, queue_init);
1174         if (IS_ERR(ctx->m2m_ctx)) {
1175                 err = PTR_ERR(ctx->m2m_ctx);
1176                 kfree(ctx);
1177         }
1178         return err;
1179 }
1180
1181 static int fimc_m2m_release(struct file *file)
1182 {
1183         struct fimc_ctx *ctx = file->private_data;
1184         struct fimc_dev *fimc = ctx->fimc_dev;
1185
1186         v4l2_m2m_ctx_release(ctx->m2m_ctx);
1187         kfree(ctx);
1188         mutex_lock(&fimc->lock);
1189         if (--fimc->m2m.refcnt <= 0)
1190                 clear_bit(ST_OUTDMA_RUN, &fimc->state);
1191         mutex_unlock(&fimc->lock);
1192         return 0;
1193 }
1194
1195 static unsigned int fimc_m2m_poll(struct file *file,
1196                                      struct poll_table_struct *wait)
1197 {
1198         struct fimc_ctx *ctx = file->private_data;
1199         return v4l2_m2m_poll(file, ctx->m2m_ctx, wait);
1200 }
1201
1202
1203 static int fimc_m2m_mmap(struct file *file, struct vm_area_struct *vma)
1204 {
1205         struct fimc_ctx *ctx = file->private_data;
1206         return v4l2_m2m_mmap(file, ctx->m2m_ctx, vma);
1207 }
1208
1209 static const struct v4l2_file_operations fimc_m2m_fops = {
1210         .owner          = THIS_MODULE,
1211         .open           = fimc_m2m_open,
1212         .release        = fimc_m2m_release,
1213         .poll           = fimc_m2m_poll,
1214         .ioctl          = video_ioctl2,
1215         .mmap           = fimc_m2m_mmap,
1216 };
1217
1218 static struct v4l2_m2m_ops m2m_ops = {
1219         .device_run     = fimc_dma_run,
1220         .job_abort      = fimc_job_abort,
1221 };
1222
1223
1224 static int fimc_register_m2m_device(struct fimc_dev *fimc)
1225 {
1226         struct video_device *vfd;
1227         struct platform_device *pdev;
1228         struct v4l2_device *v4l2_dev;
1229         int ret = 0;
1230
1231         if (!fimc)
1232                 return -ENODEV;
1233
1234         pdev = fimc->pdev;
1235         v4l2_dev = &fimc->m2m.v4l2_dev;
1236
1237         /* set name if it is empty */
1238         if (!v4l2_dev->name[0])
1239                 snprintf(v4l2_dev->name, sizeof(v4l2_dev->name),
1240                          "%s.m2m", dev_name(&pdev->dev));
1241
1242         ret = v4l2_device_register(&pdev->dev, v4l2_dev);
1243         if (ret)
1244                 return ret;;
1245
1246         vfd = video_device_alloc();
1247         if (!vfd) {
1248                 v4l2_err(v4l2_dev, "Failed to allocate video device\n");
1249                 goto err_m2m_r1;
1250         }
1251
1252         vfd->fops       = &fimc_m2m_fops;
1253         vfd->ioctl_ops  = &fimc_m2m_ioctl_ops;
1254         vfd->minor      = -1;
1255         vfd->release    = video_device_release;
1256
1257         snprintf(vfd->name, sizeof(vfd->name), "%s:m2m", dev_name(&pdev->dev));
1258
1259         video_set_drvdata(vfd, fimc);
1260         platform_set_drvdata(pdev, fimc);
1261
1262         fimc->m2m.vfd = vfd;
1263         fimc->m2m.m2m_dev = v4l2_m2m_init(&m2m_ops);
1264         if (IS_ERR(fimc->m2m.m2m_dev)) {
1265                 v4l2_err(v4l2_dev, "failed to initialize v4l2-m2m device\n");
1266                 ret = PTR_ERR(fimc->m2m.m2m_dev);
1267                 goto err_m2m_r2;
1268         }
1269
1270         ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1);
1271         if (ret) {
1272                 v4l2_err(v4l2_dev,
1273                          "%s(): failed to register video device\n", __func__);
1274                 goto err_m2m_r3;
1275         }
1276         v4l2_info(v4l2_dev,
1277                   "FIMC m2m driver registered as /dev/video%d\n", vfd->num);
1278
1279         return 0;
1280
1281 err_m2m_r3:
1282         v4l2_m2m_release(fimc->m2m.m2m_dev);
1283 err_m2m_r2:
1284         video_device_release(fimc->m2m.vfd);
1285 err_m2m_r1:
1286         v4l2_device_unregister(v4l2_dev);
1287
1288         return ret;
1289 }
1290
1291 static void fimc_unregister_m2m_device(struct fimc_dev *fimc)
1292 {
1293         if (fimc) {
1294                 v4l2_m2m_release(fimc->m2m.m2m_dev);
1295                 video_unregister_device(fimc->m2m.vfd);
1296                 video_device_release(fimc->m2m.vfd);
1297                 v4l2_device_unregister(&fimc->m2m.v4l2_dev);
1298         }
1299 }
1300
1301 static void fimc_clk_release(struct fimc_dev *fimc)
1302 {
1303         int i;
1304         for (i = 0; i < NUM_FIMC_CLOCKS; i++) {
1305                 if (fimc->clock[i]) {
1306                         clk_disable(fimc->clock[i]);
1307                         clk_put(fimc->clock[i]);
1308                 }
1309         }
1310 }
1311
1312 static int fimc_clk_get(struct fimc_dev *fimc)
1313 {
1314         int i;
1315         for (i = 0; i < NUM_FIMC_CLOCKS; i++) {
1316                 fimc->clock[i] = clk_get(&fimc->pdev->dev, fimc_clock_name[i]);
1317                 if (IS_ERR(fimc->clock[i])) {
1318                         dev_err(&fimc->pdev->dev,
1319                                 "failed to get fimc clock: %s\n",
1320                                 fimc_clock_name[i]);
1321                         return -ENXIO;
1322                 }
1323                 clk_enable(fimc->clock[i]);
1324         }
1325         return 0;
1326 }
1327
1328 static int fimc_probe(struct platform_device *pdev)
1329 {
1330         struct fimc_dev *fimc;
1331         struct resource *res;
1332         struct samsung_fimc_driverdata *drv_data;
1333         int ret = 0;
1334
1335         dev_dbg(&pdev->dev, "%s():\n", __func__);
1336
1337         drv_data = (struct samsung_fimc_driverdata *)
1338                 platform_get_device_id(pdev)->driver_data;
1339
1340         if (pdev->id >= drv_data->devs_cnt) {
1341                 dev_err(&pdev->dev, "Invalid platform device id: %d\n",
1342                         pdev->id);
1343                 return -EINVAL;
1344         }
1345
1346         fimc = kzalloc(sizeof(struct fimc_dev), GFP_KERNEL);
1347         if (!fimc)
1348                 return -ENOMEM;
1349
1350         fimc->id = pdev->id;
1351         fimc->variant = drv_data->variant[fimc->id];
1352         fimc->pdev = pdev;
1353         fimc->state = ST_IDLE;
1354
1355         spin_lock_init(&fimc->irqlock);
1356         spin_lock_init(&fimc->slock);
1357
1358         mutex_init(&fimc->lock);
1359
1360         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1361         if (!res) {
1362                 dev_err(&pdev->dev, "failed to find the registers\n");
1363                 ret = -ENOENT;
1364                 goto err_info;
1365         }
1366
1367         fimc->regs_res = request_mem_region(res->start, resource_size(res),
1368                         dev_name(&pdev->dev));
1369         if (!fimc->regs_res) {
1370                 dev_err(&pdev->dev, "failed to obtain register region\n");
1371                 ret = -ENOENT;
1372                 goto err_info;
1373         }
1374
1375         fimc->regs = ioremap(res->start, resource_size(res));
1376         if (!fimc->regs) {
1377                 dev_err(&pdev->dev, "failed to map registers\n");
1378                 ret = -ENXIO;
1379                 goto err_req_region;
1380         }
1381
1382         ret = fimc_clk_get(fimc);
1383         if (ret)
1384                 goto err_regs_unmap;
1385
1386         res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1387         if (!res) {
1388                 dev_err(&pdev->dev, "failed to get IRQ resource\n");
1389                 ret = -ENXIO;
1390                 goto err_clk;
1391         }
1392         fimc->irq = res->start;
1393
1394         fimc_hw_reset(fimc);
1395
1396         ret = request_irq(fimc->irq, fimc_isr, 0, pdev->name, fimc);
1397         if (ret) {
1398                 dev_err(&pdev->dev, "failed to install irq (%d)\n", ret);
1399                 goto err_clk;
1400         }
1401
1402         fimc->work_queue = create_workqueue(dev_name(&fimc->pdev->dev));
1403         if (!fimc->work_queue) {
1404                 ret = -ENOMEM;
1405                 goto err_irq;
1406         }
1407
1408         ret = fimc_register_m2m_device(fimc);
1409         if (ret)
1410                 goto err_wq;
1411
1412         fimc_hw_en_lastirq(fimc, true);
1413
1414         dev_dbg(&pdev->dev, "%s(): fimc-%d registered successfully\n",
1415                 __func__, fimc->id);
1416
1417         return 0;
1418
1419 err_wq:
1420         destroy_workqueue(fimc->work_queue);
1421 err_irq:
1422         free_irq(fimc->irq, fimc);
1423 err_clk:
1424         fimc_clk_release(fimc);
1425 err_regs_unmap:
1426         iounmap(fimc->regs);
1427 err_req_region:
1428         release_resource(fimc->regs_res);
1429         kfree(fimc->regs_res);
1430 err_info:
1431         kfree(fimc);
1432         dev_err(&pdev->dev, "failed to install\n");
1433         return ret;
1434 }
1435
1436 static int __devexit fimc_remove(struct platform_device *pdev)
1437 {
1438         struct fimc_dev *fimc =
1439                 (struct fimc_dev *)platform_get_drvdata(pdev);
1440
1441         v4l2_info(&fimc->m2m.v4l2_dev, "Removing %s\n", pdev->name);
1442
1443         free_irq(fimc->irq, fimc);
1444
1445         fimc_hw_reset(fimc);
1446
1447         fimc_unregister_m2m_device(fimc);
1448         fimc_clk_release(fimc);
1449         iounmap(fimc->regs);
1450         release_resource(fimc->regs_res);
1451         kfree(fimc->regs_res);
1452         kfree(fimc);
1453         return 0;
1454 }
1455
1456 static struct samsung_fimc_variant fimc01_variant_s5p = {
1457         .has_inp_rot    = 1,
1458         .has_out_rot    = 1,
1459         .min_inp_pixsize = 16,
1460         .min_out_pixsize = 16,
1461
1462         .scaler_en_w    = 3264,
1463         .scaler_dis_w   = 8192,
1464         .in_rot_en_h    = 1920,
1465         .in_rot_dis_w   = 8192,
1466         .out_rot_en_w   = 1920,
1467         .out_rot_dis_w  = 4224,
1468 };
1469
1470 static struct samsung_fimc_variant fimc2_variant_s5p = {
1471         .min_inp_pixsize = 16,
1472         .min_out_pixsize = 16,
1473
1474         .scaler_en_w    = 4224,
1475         .scaler_dis_w   = 8192,
1476         .in_rot_en_h    = 1920,
1477         .in_rot_dis_w   = 8192,
1478         .out_rot_en_w   = 1920,
1479         .out_rot_dis_w  = 4224,
1480 };
1481
1482 static struct samsung_fimc_variant fimc01_variant_s5pv210 = {
1483         .pix_hoff       = 1,
1484         .has_inp_rot    = 1,
1485         .has_out_rot    = 1,
1486         .min_inp_pixsize = 16,
1487         .min_out_pixsize = 32,
1488
1489         .scaler_en_w    = 4224,
1490         .scaler_dis_w   = 8192,
1491         .in_rot_en_h    = 1920,
1492         .in_rot_dis_w   = 8192,
1493         .out_rot_en_w   = 1920,
1494         .out_rot_dis_w  = 4224,
1495 };
1496
1497 static struct samsung_fimc_variant fimc2_variant_s5pv210 = {
1498         .pix_hoff        = 1,
1499         .min_inp_pixsize = 16,
1500         .min_out_pixsize = 32,
1501
1502         .scaler_en_w    = 1920,
1503         .scaler_dis_w   = 8192,
1504         .in_rot_en_h    = 1280,
1505         .in_rot_dis_w   = 8192,
1506         .out_rot_en_w   = 1280,
1507         .out_rot_dis_w  = 1920,
1508 };
1509
1510 static struct samsung_fimc_driverdata fimc_drvdata_s5p = {
1511         .variant = {
1512                 [0] = &fimc01_variant_s5p,
1513                 [1] = &fimc01_variant_s5p,
1514                 [2] = &fimc2_variant_s5p,
1515         },
1516         .devs_cnt = 3
1517 };
1518
1519 static struct samsung_fimc_driverdata fimc_drvdata_s5pv210 = {
1520         .variant = {
1521                 [0] = &fimc01_variant_s5pv210,
1522                 [1] = &fimc01_variant_s5pv210,
1523                 [2] = &fimc2_variant_s5pv210,
1524         },
1525         .devs_cnt = 3
1526 };
1527
1528 static struct platform_device_id fimc_driver_ids[] = {
1529         {
1530                 .name           = "s5p-fimc",
1531                 .driver_data    = (unsigned long)&fimc_drvdata_s5p,
1532         }, {
1533                 .name           = "s5pv210-fimc",
1534                 .driver_data    = (unsigned long)&fimc_drvdata_s5pv210,
1535         },
1536         {},
1537 };
1538 MODULE_DEVICE_TABLE(platform, fimc_driver_ids);
1539
1540 static struct platform_driver fimc_driver = {
1541         .probe          = fimc_probe,
1542         .remove = __devexit_p(fimc_remove),
1543         .id_table       = fimc_driver_ids,
1544         .driver = {
1545                 .name   = MODULE_NAME,
1546                 .owner  = THIS_MODULE,
1547         }
1548 };
1549
1550 static char banner[] __initdata = KERN_INFO
1551         "S5PC Camera Interface V4L2 Driver, (c) 2010 Samsung Electronics\n";
1552
1553 static int __init fimc_init(void)
1554 {
1555         u32 ret;
1556         printk(banner);
1557
1558         ret = platform_driver_register(&fimc_driver);
1559         if (ret) {
1560                 printk(KERN_ERR "FIMC platform driver register failed\n");
1561                 return -1;
1562         }
1563         return 0;
1564 }
1565
1566 static void __exit fimc_exit(void)
1567 {
1568         platform_driver_unregister(&fimc_driver);
1569 }
1570
1571 module_init(fimc_init);
1572 module_exit(fimc_exit);
1573
1574 MODULE_AUTHOR("Sylwester Nawrocki, s.nawrocki@samsung.com");
1575 MODULE_DESCRIPTION("S3C/S5P FIMC (video postprocessor) driver");
1576 MODULE_LICENSE("GPL");