drivers/media/platform/s3c-camif/camif-core.c

   1 /*
   2  * s3c24xx/s3c64xx SoC series Camera Interface (CAMIF) driver
   3  *
   4  * Copyright (C) 2012 Sylwester Nawrocki <sylvester.nawrocki@gmail.com>
   5  * Copyright (C) 2012 Tomasz Figa <tomasz.figa@gmail.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published
   9  * by the Free Software Foundation, either version 2 of the License,
  10  * or (at your option) any later version.
  11  */
  12 #define pr_fmt(fmt) "%s:%d " fmt, __func__, __LINE__
  13
  14 #include <linux/bug.h>
  15 #include <linux/clk.h>
  16 #include <linux/delay.h>
  17 #include <linux/device.h>
  18 #include <linux/errno.h>
  19 #include <linux/gpio.h>
  20 #include <linux/i2c.h>
  21 #include <linux/interrupt.h>
  22 #include <linux/io.h>
  23 #include <linux/kernel.h>
  24 #include <linux/list.h>
  25 #include <linux/module.h>
  26 #include <linux/platform_device.h>
  27 #include <linux/pm_runtime.h>
  28 #include <linux/slab.h>
  29 #include <linux/types.h>
  30 #include <linux/version.h>
  31
  32 #include <media/media-device.h>
  33 #include <media/v4l2-ctrls.h>
  34 #include <media/v4l2-ioctl.h>
  35 #include <media/videobuf2-core.h>
  36 #include <media/videobuf2-dma-contig.h>
  37
  38 #include "camif-core.h"
  39
  40 static char *camif_clocks[CLK_MAX_NUM] = {
  41         /* HCLK CAMIF clock */
  42         [CLK_GATE]      = "camif",
  43         /* CAMIF / external camera sensor master clock */
  44         [CLK_CAM]       = "camera",
  45 };
  46
  47 static const struct camif_fmt camif_formats[] = {
  48         {
  49                 .name           = "YUV 4:2:2 planar, Y/Cb/Cr",
  50                 .fourcc         = V4L2_PIX_FMT_YUV422P,
  51                 .depth          = 16,
  52                 .ybpp           = 1,
  53                 .color          = IMG_FMT_YCBCR422P,
  54                 .colplanes      = 3,
  55                 .flags          = FMT_FL_S3C24XX_CODEC |
  56                                   FMT_FL_S3C64XX,
  57         }, {
  58                 .name           = "YUV 4:2:0 planar, Y/Cb/Cr",
  59                 .fourcc         = V4L2_PIX_FMT_YUV420,
  60                 .depth          = 12,
  61                 .ybpp           = 1,
  62                 .color          = IMG_FMT_YCBCR420,
  63                 .colplanes      = 3,
  64                 .flags          = FMT_FL_S3C24XX_CODEC |
  65                                   FMT_FL_S3C64XX,
  66         }, {
  67                 .name           = "YVU 4:2:0 planar, Y/Cr/Cb",
  68                 .fourcc         = V4L2_PIX_FMT_YVU420,
  69                 .depth          = 12,
  70                 .ybpp           = 1,
  71                 .color          = IMG_FMT_YCRCB420,
  72                 .colplanes      = 3,
  73                 .flags          = FMT_FL_S3C24XX_CODEC |
  74                                   FMT_FL_S3C64XX,
  75         }, {
  76                 .name           = "RGB565, 16 bpp",
  77                 .fourcc         = V4L2_PIX_FMT_RGB565X,
  78                 .depth          = 16,
  79                 .ybpp           = 2,
  80                 .color          = IMG_FMT_RGB565,
  81                 .colplanes      = 1,
  82                 .flags          = FMT_FL_S3C24XX_PREVIEW |
  83                                   FMT_FL_S3C64XX,
  84         }, {
  85                 .name           = "XRGB8888, 32 bpp",
  86                 .fourcc         = V4L2_PIX_FMT_RGB32,
  87                 .depth          = 32,
  88                 .ybpp           = 4,
  89                 .color          = IMG_FMT_XRGB8888,
  90                 .colplanes      = 1,
  91                 .flags          = FMT_FL_S3C24XX_PREVIEW |
  92                                   FMT_FL_S3C64XX,
  93         }, {
  94                 .name           = "BGR666",
  95                 .fourcc         = V4L2_PIX_FMT_BGR666,
  96                 .depth          = 32,
  97                 .ybpp           = 4,
  98                 .color          = IMG_FMT_RGB666,
  99                 .colplanes      = 1,
 100                 .flags          = FMT_FL_S3C64XX,
 101         }
 102 };
 103
 104 /**
 105  * s3c_camif_find_format() - lookup camif color format by fourcc or an index
 106  * @pixelformat: fourcc to match, ignored if null
 107  * @index: index to the camif_formats array, ignored if negative
 108  */
 109 const struct camif_fmt *s3c_camif_find_format(struct camif_vp *vp,
 110                                               const u32 *pixelformat,
 111                                               int index)
 112 {
 113         const struct camif_fmt *fmt, *def_fmt = NULL;
 114         unsigned int i;
 115         int id = 0;
 116
 117         if (index >= (int)ARRAY_SIZE(camif_formats))
 118                 return NULL;
 119
 120         for (i = 0; i < ARRAY_SIZE(camif_formats); ++i) {
 121                 fmt = &camif_formats[i];
 122                 if (vp && !(vp->fmt_flags & fmt->flags))
 123                         continue;
 124                 if (pixelformat && fmt->fourcc == *pixelformat)
 125                         return fmt;
 126                 if (index == id)
 127                         def_fmt = fmt;
 128                 id++;
 129         }
 130         return def_fmt;
 131 }
 132
 133 static int camif_get_scaler_factor(u32 src, u32 tar, u32 *ratio, u32 *shift)
 134 {
 135         unsigned int sh = 6;
 136
 137         if (src >= 64 * tar)
 138                 return -EINVAL;
 139
 140         while (sh--) {
 141                 unsigned int tmp = 1 << sh;
 142                 if (src >= tar * tmp) {
 143                         *shift = sh, *ratio = tmp;
 144                         return 0;
 145                 }
 146         }
 147         *shift = 0, *ratio = 1;
 148         return 0;
 149 }
 150
 151 int s3c_camif_get_scaler_config(struct camif_vp *vp,
 152                                 struct camif_scaler *scaler)
 153 {
 154         struct v4l2_rect *camif_crop = &vp->camif->camif_crop;
 155         int source_x = camif_crop->width;
 156         int source_y = camif_crop->height;
 157         int target_x = vp->out_frame.rect.width;
 158         int target_y = vp->out_frame.rect.height;
 159         int ret;
 160
 161         if (vp->rotation == 90 || vp->rotation == 270)
 162                 swap(target_x, target_y);
 163
 164         ret = camif_get_scaler_factor(source_x, target_x, &scaler->pre_h_ratio,
 165                                       &scaler->h_shift);
 166         if (ret < 0)
 167                 return ret;
 168
 169         ret = camif_get_scaler_factor(source_y, target_y, &scaler->pre_v_ratio,
 170                                       &scaler->v_shift);
 171         if (ret < 0)
 172                 return ret;
 173
 174         scaler->pre_dst_width = source_x / scaler->pre_h_ratio;
 175         scaler->pre_dst_height = source_y / scaler->pre_v_ratio;
 176
 177         scaler->main_h_ratio = (source_x << 8) / (target_x << scaler->h_shift);
 178         scaler->main_v_ratio = (source_y << 8) / (target_y << scaler->v_shift);
 179
 180         scaler->scaleup_h = (target_x >= source_x);
 181         scaler->scaleup_v = (target_y >= source_y);
 182
 183         scaler->copy = 0;
 184
 185         pr_debug("H: ratio: %u, shift: %u. V: ratio: %u, shift: %u.\n",
 186                  scaler->pre_h_ratio, scaler->h_shift,
 187                  scaler->pre_v_ratio, scaler->v_shift);
 188
 189         pr_debug("Source: %dx%d, Target: %dx%d, scaleup_h/v: %d/%d\n",
 190                  source_x, source_y, target_x, target_y,
 191                  scaler->scaleup_h, scaler->scaleup_v);
 192
 193         return 0;
 194 }
 195
 196 static int camif_register_sensor(struct camif_dev *camif)
 197 {
 198         struct s3c_camif_sensor_info *sensor = &camif->pdata.sensor;
 199         struct v4l2_device *v4l2_dev = &camif->v4l2_dev;
 200         struct i2c_adapter *adapter;
 201         struct v4l2_subdev_format format;
 202         struct v4l2_subdev *sd;
 203         int ret;
 204
 205         camif->sensor.sd = NULL;
 206
 207         if (sensor->i2c_board_info.addr == 0)
 208                 return -EINVAL;
 209
 210         adapter = i2c_get_adapter(sensor->i2c_bus_num);
 211         if (adapter == NULL) {
 212                 v4l2_warn(v4l2_dev, "failed to get I2C adapter %d\n",
 213                           sensor->i2c_bus_num);
 214                 return -EPROBE_DEFER;
 215         }
 216
 217         sd = v4l2_i2c_new_subdev_board(v4l2_dev, adapter,
 218                                        &sensor->i2c_board_info, NULL);
 219         if (sd == NULL) {
 220                 i2c_put_adapter(adapter);
 221                 v4l2_warn(v4l2_dev, "failed to acquire subdev %s\n",
 222                           sensor->i2c_board_info.type);
 223                 return -EPROBE_DEFER;
 224         }
 225         camif->sensor.sd = sd;
 226
 227         v4l2_info(v4l2_dev, "registered sensor subdevice %s\n", sd->name);
 228
 229         /* Get initial pixel format and set it at the camif sink pad */
 230         format.pad = 0;
 231         format.which = V4L2_SUBDEV_FORMAT_ACTIVE;
 232         ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &format);
 233
 234         if (ret < 0)
 235                 return 0;
 236
 237         format.pad = CAMIF_SD_PAD_SINK;
 238         v4l2_subdev_call(&camif->subdev, pad, set_fmt, NULL, &format);
 239
 240         v4l2_info(sd, "Initial format from sensor: %dx%d, %#x\n",
 241                   format.format.width, format.format.height,
 242                   format.format.code);
 243         return 0;
 244 }
 245
 246 static void camif_unregister_sensor(struct camif_dev *camif)
 247 {
 248         struct v4l2_subdev *sd = camif->sensor.sd;
 249         struct i2c_client *client = sd ? v4l2_get_subdevdata(sd) : NULL;
 250         struct i2c_adapter *adapter;
 251
 252         if (client == NULL)
 253                 return;
 254
 255         adapter = client->adapter;
 256         v4l2_device_unregister_subdev(sd);
 257         camif->sensor.sd = NULL;
 258         i2c_unregister_device(client);
 259         i2c_put_adapter(adapter);
 260 }
 261
 262 static int camif_create_media_links(struct camif_dev *camif)
 263 {
 264         int i, ret;
 265
 266         ret = media_entity_create_link(&camif->sensor.sd->entity, 0,
 267                                 &camif->subdev.entity, CAMIF_SD_PAD_SINK,
 268                                 MEDIA_LNK_FL_IMMUTABLE |
 269                                 MEDIA_LNK_FL_ENABLED);
 270         if (ret)
 271                 return ret;
 272
 273         for (i = 1; i < CAMIF_SD_PADS_NUM && !ret; i++) {
 274                 ret = media_entity_create_link(&camif->subdev.entity, i,
 275                                 &camif->vp[i - 1].vdev.entity, 0,
 276                                 MEDIA_LNK_FL_IMMUTABLE |
 277                                 MEDIA_LNK_FL_ENABLED);
 278         }
 279
 280         return ret;
 281 }
 282
 283 static int camif_register_video_nodes(struct camif_dev *camif)
 284 {
 285         int ret = s3c_camif_register_video_node(camif, VP_CODEC);
 286         if (ret < 0)
 287                 return ret;
 288
 289         return s3c_camif_register_video_node(camif, VP_PREVIEW);
 290 }
 291
 292 static void camif_unregister_video_nodes(struct camif_dev *camif)
 293 {
 294         s3c_camif_unregister_video_node(camif, VP_CODEC);
 295         s3c_camif_unregister_video_node(camif, VP_PREVIEW);
 296 }
 297
 298 static void camif_unregister_media_entities(struct camif_dev *camif)
 299 {
 300         camif_unregister_video_nodes(camif);
 301         camif_unregister_sensor(camif);
 302         s3c_camif_unregister_subdev(camif);
 303 }
 304
 305 /*
 306  * Media device
 307  */
 308 static int camif_media_dev_register(struct camif_dev *camif)
 309 {
 310         struct media_device *md = &camif->media_dev;
 311         struct v4l2_device *v4l2_dev = &camif->v4l2_dev;
 312         unsigned int ip_rev = camif->variant->ip_revision;
 313         int ret;
 314
 315         memset(md, 0, sizeof(*md));
 316         snprintf(md->model, sizeof(md->model), "SAMSUNG S3C%s CAMIF",
 317                  ip_rev == S3C6410_CAMIF_IP_REV ? "6410" : "244X");
 318         strlcpy(md->bus_info, "platform", sizeof(md->bus_info));
 319         md->hw_revision = ip_rev;
 320         md->driver_version = KERNEL_VERSION(1, 0, 0);
 321
 322         md->dev = camif->dev;
 323
 324         strlcpy(v4l2_dev->name, "s3c-camif", sizeof(v4l2_dev->name));
 325         v4l2_dev->mdev = md;
 326
 327         ret = v4l2_device_register(camif->dev, v4l2_dev);
 328         if (ret < 0)
 329                 return ret;
 330
 331         ret = media_device_register(md);
 332         if (ret < 0)
 333                 v4l2_device_unregister(v4l2_dev);
 334
 335         return ret;
 336 }
 337
 338 static void camif_clk_put(struct camif_dev *camif)
 339 {
 340         int i;
 341
 342         for (i = 0; i < CLK_MAX_NUM; i++) {
 343                 if (IS_ERR(camif->clock[i]))
 344                         continue;
 345                 clk_unprepare(camif->clock[i]);
 346                 clk_put(camif->clock[i]);
 347                 camif->clock[i] = ERR_PTR(-EINVAL);
 348         }
 349 }
 350
 351 static int camif_clk_get(struct camif_dev *camif)
 352 {
 353         int ret, i;
 354
 355         for (i = 1; i < CLK_MAX_NUM; i++)
 356                 camif->clock[i] = ERR_PTR(-EINVAL);
 357
 358         for (i = 0; i < CLK_MAX_NUM; i++) {
 359                 camif->clock[i] = clk_get(camif->dev, camif_clocks[i]);
 360                 if (IS_ERR(camif->clock[i])) {
 361                         ret = PTR_ERR(camif->clock[i]);
 362                         goto err;
 363                 }
 364                 ret = clk_prepare(camif->clock[i]);
 365                 if (ret < 0) {
 366                         clk_put(camif->clock[i]);
 367                         camif->clock[i] = NULL;
 368                         goto err;
 369                 }
 370         }
 371         return 0;
 372 err:
 373         camif_clk_put(camif);
 374         dev_err(camif->dev, "failed to get clock: %s\n",
 375                 camif_clocks[i]);
 376         return ret;
 377 }
 378
 379 /*
 380  * The CAMIF device has two relatively independent data processing paths
 381  * that can source data from memory or the common camera input frontend.
 382  * Register interrupts for each data processing path (camif_vp).
 383  */
 384 static int camif_request_irqs(struct platform_device *pdev,
 385                               struct camif_dev *camif)
 386 {
 387         int irq, ret, i;
 388
 389         for (i = 0; i < CAMIF_VP_NUM; i++) {
 390                 struct camif_vp *vp = &camif->vp[i];
 391
 392                 init_waitqueue_head(&vp->irq_queue);
 393
 394                 irq = platform_get_irq(pdev, i);
 395                 if (irq <= 0) {
 396                         dev_err(&pdev->dev, "failed to get IRQ %d\n", i);
 397                         return -ENXIO;
 398                 }
 399
 400                 ret = devm_request_irq(&pdev->dev, irq, s3c_camif_irq_handler,
 401                                        0, dev_name(&pdev->dev), vp);
 402                 if (ret < 0) {
 403                         dev_err(&pdev->dev, "failed to install IRQ: %d\n", ret);
 404                         break;
 405                 }
 406         }
 407
 408         return ret;
 409 }
 410
 411 static int s3c_camif_probe(struct platform_device *pdev)
 412 {
 413         struct device *dev = &pdev->dev;
 414         struct s3c_camif_plat_data *pdata = dev->platform_data;
 415         struct s3c_camif_drvdata *drvdata;
 416         struct camif_dev *camif;
 417         struct resource *mres;
 418         int ret = 0;
 419
 420         camif = devm_kzalloc(dev, sizeof(*camif), GFP_KERNEL);
 421         if (!camif)
 422                 return -ENOMEM;
 423
 424         spin_lock_init(&camif->slock);
 425         mutex_init(&camif->lock);
 426
 427         camif->dev = dev;
 428
 429         if (!pdata || !pdata->gpio_get || !pdata->gpio_put) {
 430                 dev_err(dev, "wrong platform data\n");
 431                 return -EINVAL;
 432         }
 433
 434         camif->pdata = *pdata;
 435         drvdata = (void *)platform_get_device_id(pdev)->driver_data;
 436         camif->variant = drvdata->variant;
 437
 438         mres = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 439
 440         camif->io_base = devm_ioremap_resource(dev, mres);
 441         if (IS_ERR(camif->io_base))
 442                 return PTR_ERR(camif->io_base);
 443
 444         ret = camif_request_irqs(pdev, camif);
 445         if (ret < 0)
 446                 return ret;
 447
 448         ret = pdata->gpio_get();
 449         if (ret < 0)
 450                 return ret;
 451
 452         ret = s3c_camif_create_subdev(camif);
 453         if (ret < 0)
 454                 goto err_sd;
 455
 456         ret = camif_clk_get(camif);
 457         if (ret < 0)
 458                 goto err_clk;
 459
 460         platform_set_drvdata(pdev, camif);
 461         clk_set_rate(camif->clock[CLK_CAM],
 462                         camif->pdata.sensor.clock_frequency);
 463
 464         dev_info(dev, "sensor clock frequency: %lu\n",
 465                  clk_get_rate(camif->clock[CLK_CAM]));
 466         /*
 467          * Set initial pixel format, resolution and crop rectangle.
 468          * Must be done before a sensor subdev is registered as some
 469          * settings are overrode with values from sensor subdev.
 470          */
 471         s3c_camif_set_defaults(camif);
 472
 473         pm_runtime_enable(dev);
 474
 475         ret = pm_runtime_get_sync(dev);
 476         if (ret < 0)
 477                 goto err_pm;
 478
 479         /* Initialize contiguous memory allocator */
 480         camif->alloc_ctx = vb2_dma_contig_init_ctx(dev);
 481         if (IS_ERR(camif->alloc_ctx)) {
 482                 ret = PTR_ERR(camif->alloc_ctx);
 483                 goto err_alloc;
 484         }
 485
 486         ret = camif_media_dev_register(camif);
 487         if (ret < 0)
 488                 goto err_mdev;
 489
 490         ret = camif_register_sensor(camif);
 491         if (ret < 0)
 492                 goto err_sens;
 493
 494         ret = v4l2_device_register_subdev(&camif->v4l2_dev, &camif->subdev);
 495         if (ret < 0)
 496                 goto err_sens;
 497
 498         mutex_lock(&camif->media_dev.graph_mutex);
 499
 500         ret = v4l2_device_register_subdev_nodes(&camif->v4l2_dev);
 501         if (ret < 0)
 502                 goto err_unlock;
 503
 504         ret = camif_register_video_nodes(camif);
 505         if (ret < 0)
 506                 goto err_unlock;
 507
 508         ret = camif_create_media_links(camif);
 509         if (ret < 0)
 510                 goto err_unlock;
 511
 512         mutex_unlock(&camif->media_dev.graph_mutex);
 513         pm_runtime_put(dev);
 514         return 0;
 515
 516 err_unlock:
 517         mutex_unlock(&camif->media_dev.graph_mutex);
 518 err_sens:
 519         v4l2_device_unregister(&camif->v4l2_dev);
 520         media_device_unregister(&camif->media_dev);
 521         camif_unregister_media_entities(camif);
 522 err_mdev:
 523         vb2_dma_contig_cleanup_ctx(camif->alloc_ctx);
 524 err_alloc:
 525         pm_runtime_put(dev);
 526         pm_runtime_disable(dev);
 527 err_pm:
 528         camif_clk_put(camif);
 529 err_clk:
 530         s3c_camif_unregister_subdev(camif);
 531 err_sd:
 532         pdata->gpio_put();
 533         return ret;
 534 }
 535
 536 static int s3c_camif_remove(struct platform_device *pdev)
 537 {
 538         struct camif_dev *camif = platform_get_drvdata(pdev);
 539         struct s3c_camif_plat_data *pdata = &camif->pdata;
 540
 541         media_device_unregister(&camif->media_dev);
 542         camif_unregister_media_entities(camif);
 543         v4l2_device_unregister(&camif->v4l2_dev);
 544
 545         pm_runtime_disable(&pdev->dev);
 546         camif_clk_put(camif);
 547         pdata->gpio_put();
 548
 549         return 0;
 550 }
 551
 552 static int s3c_camif_runtime_resume(struct device *dev)
 553 {
 554         struct camif_dev *camif = dev_get_drvdata(dev);
 555
 556         clk_enable(camif->clock[CLK_GATE]);
 557         /* null op on s3c244x */
 558         clk_enable(camif->clock[CLK_CAM]);
 559         return 0;
 560 }
 561
 562 static int s3c_camif_runtime_suspend(struct device *dev)
 563 {
 564         struct camif_dev *camif = dev_get_drvdata(dev);
 565
 566         /* null op on s3c244x */
 567         clk_disable(camif->clock[CLK_CAM]);
 568
 569         clk_disable(camif->clock[CLK_GATE]);
 570         return 0;
 571 }
 572
 573 static const struct s3c_camif_variant s3c244x_camif_variant = {
 574         .vp_pix_limits = {
 575                 [VP_CODEC] = {
 576                         .max_out_width          = 4096,
 577                         .max_sc_out_width       = 2048,
 578                         .out_width_align        = 16,
 579                         .min_out_width          = 16,
 580                         .max_height             = 4096,
 581                 },
 582                 [VP_PREVIEW] = {
 583                         .max_out_width          = 640,
 584                         .max_sc_out_width       = 640,
 585                         .out_width_align        = 16,
 586                         .min_out_width          = 16,
 587                         .max_height             = 480,
 588                 }
 589         },
 590         .pix_limits = {
 591                 .win_hor_offset_align   = 8,
 592         },
 593         .ip_revision = S3C244X_CAMIF_IP_REV,
 594 };
 595
 596 static struct s3c_camif_drvdata s3c244x_camif_drvdata = {
 597         .variant        = &s3c244x_camif_variant,
 598         .bus_clk_freq   = 24000000UL,
 599 };
 600
 601 static const struct s3c_camif_variant s3c6410_camif_variant = {
 602         .vp_pix_limits = {
 603                 [VP_CODEC] = {
 604                         .max_out_width          = 4096,
 605                         .max_sc_out_width       = 2048,
 606                         .out_width_align        = 16,
 607                         .min_out_width          = 16,
 608                         .max_height             = 4096,
 609                 },
 610                 [VP_PREVIEW] = {
 611                         .max_out_width          = 4096,
 612                         .max_sc_out_width       = 720,
 613                         .out_width_align        = 16,
 614                         .min_out_width          = 16,
 615                         .max_height             = 4096,
 616                 }
 617         },
 618         .pix_limits = {
 619                 .win_hor_offset_align   = 8,
 620         },
 621         .ip_revision = S3C6410_CAMIF_IP_REV,
 622         .has_img_effect = 1,
 623         .vp_offset = 0x20,
 624 };
 625
 626 static struct s3c_camif_drvdata s3c6410_camif_drvdata = {
 627         .variant        = &s3c6410_camif_variant,
 628         .bus_clk_freq   = 133000000UL,
 629 };
 630
 631 static const struct platform_device_id s3c_camif_driver_ids[] = {
 632         {
 633                 .name           = "s3c2440-camif",
 634                 .driver_data    = (unsigned long)&s3c244x_camif_drvdata,
 635         }, {
 636                 .name           = "s3c6410-camif",
 637                 .driver_data    = (unsigned long)&s3c6410_camif_drvdata,
 638         },
 639         { /* sentinel */ },
 640 };
 641 MODULE_DEVICE_TABLE(platform, s3c_camif_driver_ids);
 642
 643 static const struct dev_pm_ops s3c_camif_pm_ops = {
 644         .runtime_suspend        = s3c_camif_runtime_suspend,
 645         .runtime_resume         = s3c_camif_runtime_resume,
 646 };
 647
 648 static struct platform_driver s3c_camif_driver = {
 649         .probe          = s3c_camif_probe,
 650         .remove         = s3c_camif_remove,
 651         .id_table       = s3c_camif_driver_ids,
 652         .driver = {
 653                 .name   = S3C_CAMIF_DRIVER_NAME,
 654                 .pm     = &s3c_camif_pm_ops,
 655         }
 656 };
 657
 658 module_platform_driver(s3c_camif_driver);
 659
 660 MODULE_AUTHOR("Sylwester Nawrocki <sylvester.nawrocki@gmail.com>");
 661 MODULE_AUTHOR("Tomasz Figa <tomasz.figa@gmail.com>");
 662 MODULE_DESCRIPTION("S3C24XX/S3C64XX SoC camera interface driver");
 663 MODULE_LICENSE("GPL");