drivers/media/platform/vimc/vimc-debayer.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * vimc-debayer.c Virtual Media Controller Driver
   4  *
   5  * Copyright (C) 2015-2017 Helen Koike <helen.fornazier@gmail.com>
   6  */
   7
   8 #include <linux/component.h>
   9 #include <linux/module.h>
  10 #include <linux/mod_devicetable.h>
  11 #include <linux/platform_device.h>
  12 #include <linux/vmalloc.h>
  13 #include <linux/v4l2-mediabus.h>
  14 #include <media/v4l2-subdev.h>
  15
  16 #include "vimc-common.h"
  17
  18 #define VIMC_DEB_DRV_NAME "vimc-debayer"
  19 /* This module only supports tranforming a bayer format to V4L2_PIX_FMT_RGB24 */
  20 #define VIMC_DEB_SRC_PIXFMT V4L2_PIX_FMT_RGB24
  21 #define VIMC_DEB_SRC_MBUS_FMT_DEFAULT MEDIA_BUS_FMT_RGB888_1X24
  22
  23 static unsigned int deb_mean_win_size = 3;
  24 module_param(deb_mean_win_size, uint, 0000);
  25 MODULE_PARM_DESC(deb_mean_win_size, " the window size to calculate the mean.\n"
  26         "NOTE: the window size need to be an odd number, as the main pixel "
  27         "stays in the center of the window, otherwise the next odd number "
  28         "is considered");
  29
  30 #define IS_SINK(pad) (!pad)
  31 #define IS_SRC(pad)  (pad)
  32
  33 enum vimc_deb_rgb_colors {
  34         VIMC_DEB_RED = 0,
  35         VIMC_DEB_GREEN = 1,
  36         VIMC_DEB_BLUE = 2,
  37 };
  38
  39 struct vimc_deb_pix_map {
  40         u32 pixelformat;
  41         u32 code;
  42         enum vimc_deb_rgb_colors order[2][2];
  43 };
  44
  45 struct vimc_deb_device {
  46         struct vimc_ent_device ved;
  47         struct v4l2_subdev sd;
  48         struct device *dev;
  49         /* The active format */
  50         struct v4l2_mbus_framefmt sink_fmt;
  51         u32 src_code;
  52         void (*set_rgb_src)(struct vimc_deb_device *vdeb, unsigned int lin,
  53                             unsigned int col, unsigned int rgb[3]);
  54         /* Values calculated when the stream starts */
  55         u8 *src_frame;
  56         const struct vimc_deb_pix_map *sink_pix_map;
  57         unsigned int sink_bpp;
  58 };
  59
  60 static const struct v4l2_mbus_framefmt sink_fmt_default = {
  61         .width = 640,
  62         .height = 480,
  63         .code = MEDIA_BUS_FMT_SRGGB8_1X8,
  64         .field = V4L2_FIELD_NONE,
  65         .colorspace = V4L2_COLORSPACE_DEFAULT,
  66 };
  67
  68 static const struct vimc_deb_pix_map vimc_deb_pix_map_list[] = {
  69         {
  70                 .pixelformat = V4L2_PIX_FMT_SBGGR8,
  71                 .code = MEDIA_BUS_FMT_SBGGR8_1X8,
  72                 .order = { { VIMC_DEB_BLUE, VIMC_DEB_GREEN },
  73                            { VIMC_DEB_GREEN, VIMC_DEB_RED } }
  74         },
  75         {
  76                 .pixelformat = V4L2_PIX_FMT_SGBRG8,
  77                 .code = MEDIA_BUS_FMT_SGBRG8_1X8,
  78                 .order = { { VIMC_DEB_GREEN, VIMC_DEB_BLUE },
  79                            { VIMC_DEB_RED, VIMC_DEB_GREEN } }
  80         },
  81         {
  82                 .pixelformat = V4L2_PIX_FMT_SGRBG8,
  83                 .code = MEDIA_BUS_FMT_SGRBG8_1X8,
  84                 .order = { { VIMC_DEB_GREEN, VIMC_DEB_RED },
  85                            { VIMC_DEB_BLUE, VIMC_DEB_GREEN } }
  86         },
  87         {
  88                 .pixelformat = V4L2_PIX_FMT_SRGGB8,
  89                 .code = MEDIA_BUS_FMT_SRGGB8_1X8,
  90                 .order = { { VIMC_DEB_RED, VIMC_DEB_GREEN },
  91                            { VIMC_DEB_GREEN, VIMC_DEB_BLUE } }
  92         },
  93         {
  94                 .pixelformat = V4L2_PIX_FMT_SBGGR10,
  95                 .code = MEDIA_BUS_FMT_SBGGR10_1X10,
  96                 .order = { { VIMC_DEB_BLUE, VIMC_DEB_GREEN },
  97                            { VIMC_DEB_GREEN, VIMC_DEB_RED } }
  98         },
  99         {
 100                 .pixelformat = V4L2_PIX_FMT_SGBRG10,
 101                 .code = MEDIA_BUS_FMT_SGBRG10_1X10,
 102                 .order = { { VIMC_DEB_GREEN, VIMC_DEB_BLUE },
 103                            { VIMC_DEB_RED, VIMC_DEB_GREEN } }
 104         },
 105         {
 106                 .pixelformat = V4L2_PIX_FMT_SGRBG10,
 107                 .code = MEDIA_BUS_FMT_SGRBG10_1X10,
 108                 .order = { { VIMC_DEB_GREEN, VIMC_DEB_RED },
 109                            { VIMC_DEB_BLUE, VIMC_DEB_GREEN } }
 110         },
 111         {
 112                 .pixelformat = V4L2_PIX_FMT_SRGGB10,
 113                 .code = MEDIA_BUS_FMT_SRGGB10_1X10,
 114                 .order = { { VIMC_DEB_RED, VIMC_DEB_GREEN },
 115                            { VIMC_DEB_GREEN, VIMC_DEB_BLUE } }
 116         },
 117         {
 118                 .pixelformat = V4L2_PIX_FMT_SBGGR12,
 119                 .code = MEDIA_BUS_FMT_SBGGR12_1X12,
 120                 .order = { { VIMC_DEB_BLUE, VIMC_DEB_GREEN },
 121                            { VIMC_DEB_GREEN, VIMC_DEB_RED } }
 122         },
 123         {
 124                 .pixelformat = V4L2_PIX_FMT_SGBRG12,
 125                 .code = MEDIA_BUS_FMT_SGBRG12_1X12,
 126                 .order = { { VIMC_DEB_GREEN, VIMC_DEB_BLUE },
 127                            { VIMC_DEB_RED, VIMC_DEB_GREEN } }
 128         },
 129         {
 130                 .pixelformat = V4L2_PIX_FMT_SGRBG12,
 131                 .code = MEDIA_BUS_FMT_SGRBG12_1X12,
 132                 .order = { { VIMC_DEB_GREEN, VIMC_DEB_RED },
 133                            { VIMC_DEB_BLUE, VIMC_DEB_GREEN } }
 134         },
 135         {
 136                 .pixelformat = V4L2_PIX_FMT_SRGGB12,
 137                 .code = MEDIA_BUS_FMT_SRGGB12_1X12,
 138                 .order = { { VIMC_DEB_RED, VIMC_DEB_GREEN },
 139                            { VIMC_DEB_GREEN, VIMC_DEB_BLUE } }
 140         },
 141 };
 142
 143 static const struct vimc_deb_pix_map *vimc_deb_pix_map_by_code(u32 code)
 144 {
 145         unsigned int i;
 146
 147         for (i = 0; i < ARRAY_SIZE(vimc_deb_pix_map_list); i++)
 148                 if (vimc_deb_pix_map_list[i].code == code)
 149                         return &vimc_deb_pix_map_list[i];
 150
 151         return NULL;
 152 }
 153
 154 static int vimc_deb_init_cfg(struct v4l2_subdev *sd,
 155                              struct v4l2_subdev_pad_config *cfg)
 156 {
 157         struct vimc_deb_device *vdeb = v4l2_get_subdevdata(sd);
 158         struct v4l2_mbus_framefmt *mf;
 159         unsigned int i;
 160
 161         mf = v4l2_subdev_get_try_format(sd, cfg, 0);
 162         *mf = sink_fmt_default;
 163
 164         for (i = 1; i < sd->entity.num_pads; i++) {
 165                 mf = v4l2_subdev_get_try_format(sd, cfg, i);
 166                 *mf = sink_fmt_default;
 167                 mf->code = vdeb->src_code;
 168         }
 169
 170         return 0;
 171 }
 172
 173 static int vimc_deb_enum_mbus_code(struct v4l2_subdev *sd,
 174                                    struct v4l2_subdev_pad_config *cfg,
 175                                    struct v4l2_subdev_mbus_code_enum *code)
 176 {
 177         /* For the sink pad we only support codes in the map_list */
 178         if (IS_SINK(code->pad)) {
 179                 if (code->index >= ARRAY_SIZE(vimc_deb_pix_map_list))
 180                         return -EINVAL;
 181
 182                 code->code = vimc_deb_pix_map_list[code->index].code;
 183                 return 0;
 184         }
 185
 186         return vimc_enum_mbus_code(sd, cfg, code);
 187 }
 188
 189 static int vimc_deb_enum_frame_size(struct v4l2_subdev *sd,
 190                                     struct v4l2_subdev_pad_config *cfg,
 191                                     struct v4l2_subdev_frame_size_enum *fse)
 192 {
 193         if (fse->index)
 194                 return -EINVAL;
 195
 196         /* For the sink pad we only support codes in the map_list */
 197         if (IS_SINK(fse->pad)) {
 198                 const struct vimc_deb_pix_map *vpix =
 199                         vimc_deb_pix_map_by_code(fse->code);
 200
 201                 if (!vpix)
 202                         return -EINVAL;
 203         }
 204
 205         fse->min_width = VIMC_FRAME_MIN_WIDTH;
 206         fse->max_width = VIMC_FRAME_MAX_WIDTH;
 207         fse->min_height = VIMC_FRAME_MIN_HEIGHT;
 208         fse->max_height = VIMC_FRAME_MAX_HEIGHT;
 209
 210         return 0;
 211 }
 212
 213 static int vimc_deb_get_fmt(struct v4l2_subdev *sd,
 214                             struct v4l2_subdev_pad_config *cfg,
 215                             struct v4l2_subdev_format *fmt)
 216 {
 217         struct vimc_deb_device *vdeb = v4l2_get_subdevdata(sd);
 218
 219         /* Get the current sink format */
 220         fmt->format = fmt->which == V4L2_SUBDEV_FORMAT_TRY ?
 221                       *v4l2_subdev_get_try_format(sd, cfg, 0) :
 222                       vdeb->sink_fmt;
 223
 224         /* Set the right code for the source pad */
 225         if (IS_SRC(fmt->pad))
 226                 fmt->format.code = vdeb->src_code;
 227
 228         return 0;
 229 }
 230
 231 static void vimc_deb_adjust_sink_fmt(struct v4l2_mbus_framefmt *fmt)
 232 {
 233         const struct vimc_deb_pix_map *vpix;
 234
 235         /* Don't accept a code that is not on the debayer table */
 236         vpix = vimc_deb_pix_map_by_code(fmt->code);
 237         if (!vpix)
 238                 fmt->code = sink_fmt_default.code;
 239
 240         fmt->width = clamp_t(u32, fmt->width, VIMC_FRAME_MIN_WIDTH,
 241                              VIMC_FRAME_MAX_WIDTH) & ~1;
 242         fmt->height = clamp_t(u32, fmt->height, VIMC_FRAME_MIN_HEIGHT,
 243                               VIMC_FRAME_MAX_HEIGHT) & ~1;
 244
 245         if (fmt->field == V4L2_FIELD_ANY)
 246                 fmt->field = sink_fmt_default.field;
 247
 248         vimc_colorimetry_clamp(fmt);
 249 }
 250
 251 static int vimc_deb_set_fmt(struct v4l2_subdev *sd,
 252                             struct v4l2_subdev_pad_config *cfg,
 253                             struct v4l2_subdev_format *fmt)
 254 {
 255         struct vimc_deb_device *vdeb = v4l2_get_subdevdata(sd);
 256         struct v4l2_mbus_framefmt *sink_fmt;
 257
 258         if (!vimc_mbus_code_supported(fmt->format.code))
 259                 fmt->format.code = sink_fmt_default.code;
 260
 261         if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
 262                 /* Do not change the format while stream is on */
 263                 if (vdeb->src_frame)
 264                         return -EBUSY;
 265
 266                 sink_fmt = &vdeb->sink_fmt;
 267         } else {
 268                 sink_fmt = v4l2_subdev_get_try_format(sd, cfg, 0);
 269         }
 270
 271         /*
 272          * Do not change the format of the source pad,
 273          * it is propagated from the sink (except for the code)
 274          */
 275         if (IS_SRC(fmt->pad)) {
 276                 vdeb->src_code = fmt->format.code;
 277                 fmt->format = *sink_fmt;
 278                 fmt->format.code = vdeb->src_code;
 279         } else {
 280                 /* Set the new format in the sink pad */
 281                 vimc_deb_adjust_sink_fmt(&fmt->format);
 282
 283                 dev_dbg(vdeb->dev, "%s: sink format update: "
 284                         "old:%dx%d (0x%x, %d, %d, %d, %d) "
 285                         "new:%dx%d (0x%x, %d, %d, %d, %d)\n", vdeb->sd.name,
 286                         /* old */
 287                         sink_fmt->width, sink_fmt->height, sink_fmt->code,
 288                         sink_fmt->colorspace, sink_fmt->quantization,
 289                         sink_fmt->xfer_func, sink_fmt->ycbcr_enc,
 290                         /* new */
 291                         fmt->format.width, fmt->format.height, fmt->format.code,
 292                         fmt->format.colorspace, fmt->format.quantization,
 293                         fmt->format.xfer_func, fmt->format.ycbcr_enc);
 294
 295                 *sink_fmt = fmt->format;
 296         }
 297
 298         return 0;
 299 }
 300
 301 static const struct v4l2_subdev_pad_ops vimc_deb_pad_ops = {
 302         .init_cfg               = vimc_deb_init_cfg,
 303         .enum_mbus_code         = vimc_deb_enum_mbus_code,
 304         .enum_frame_size        = vimc_deb_enum_frame_size,
 305         .get_fmt                = vimc_deb_get_fmt,
 306         .set_fmt                = vimc_deb_set_fmt,
 307 };
 308
 309 static void vimc_deb_set_rgb_pix_rgb24(struct vimc_deb_device *vdeb,
 310                                                   unsigned int lin,
 311                                                   unsigned int col,
 312                                                   unsigned int rgb[3])
 313 {
 314         unsigned int i, index;
 315
 316         index = VIMC_FRAME_INDEX(lin, col, vdeb->sink_fmt.width, 3);
 317         for (i = 0; i < 3; i++)
 318                 vdeb->src_frame[index + i] = rgb[i];
 319 }
 320
 321 static int vimc_deb_s_stream(struct v4l2_subdev *sd, int enable)
 322 {
 323         struct vimc_deb_device *vdeb = v4l2_get_subdevdata(sd);
 324
 325         if (enable) {
 326                 u32 src_pixelformat = vdeb->ved.stream->producer_pixfmt;
 327                 const struct v4l2_format_info *pix_info;
 328                 unsigned int frame_size;
 329
 330                 if (vdeb->src_frame)
 331                         return 0;
 332
 333                 /* We only support translating bayer to RGB24 */
 334                 if (src_pixelformat != V4L2_PIX_FMT_RGB24) {
 335                         dev_err(vdeb->dev,
 336                                 "translating to pixfmt (0x%08x) is not supported\n",
 337                                 src_pixelformat);
 338                         return -EINVAL;
 339                 }
 340
 341                 /* Get the corresponding pixel map from the table */
 342                 vdeb->sink_pix_map =
 343                         vimc_deb_pix_map_by_code(vdeb->sink_fmt.code);
 344
 345                 /* Request bayer format from the pipeline for the sink pad */
 346                 vdeb->ved.stream->producer_pixfmt =
 347                         vdeb->sink_pix_map->pixelformat;
 348
 349                 /* Calculate frame_size of the source */
 350                 pix_info = v4l2_format_info(src_pixelformat);
 351                 frame_size = vdeb->sink_fmt.width * vdeb->sink_fmt.height *
 352                              pix_info->bpp[0];
 353
 354                 /* Get bpp from the sink */
 355                 pix_info = v4l2_format_info(vdeb->sink_pix_map->pixelformat);
 356                 vdeb->sink_bpp = pix_info->bpp[0];
 357
 358                 /*
 359                  * Allocate the frame buffer. Use vmalloc to be able to
 360                  * allocate a large amount of memory
 361                  */
 362                 vdeb->src_frame = vmalloc(frame_size);
 363                 if (!vdeb->src_frame)
 364                         return -ENOMEM;
 365
 366         } else {
 367                 if (!vdeb->src_frame)
 368                         return 0;
 369
 370                 vfree(vdeb->src_frame);
 371                 vdeb->src_frame = NULL;
 372         }
 373
 374         return 0;
 375 }
 376
 377 static const struct v4l2_subdev_video_ops vimc_deb_video_ops = {
 378         .s_stream = vimc_deb_s_stream,
 379 };
 380
 381 static const struct v4l2_subdev_ops vimc_deb_ops = {
 382         .pad = &vimc_deb_pad_ops,
 383         .video = &vimc_deb_video_ops,
 384 };
 385
 386 static unsigned int vimc_deb_get_val(const u8 *bytes,
 387                                      const unsigned int n_bytes)
 388 {
 389         unsigned int i;
 390         unsigned int acc = 0;
 391
 392         for (i = 0; i < n_bytes; i++)
 393                 acc = acc + (bytes[i] << (8 * i));
 394
 395         return acc;
 396 }
 397
 398 static void vimc_deb_calc_rgb_sink(struct vimc_deb_device *vdeb,
 399                                    const u8 *frame,
 400                                    const unsigned int lin,
 401                                    const unsigned int col,
 402                                    unsigned int rgb[3])
 403 {
 404         unsigned int i, seek, wlin, wcol;
 405         unsigned int n_rgb[3] = {0, 0, 0};
 406
 407         for (i = 0; i < 3; i++)
 408                 rgb[i] = 0;
 409
 410         /*
 411          * Calculate how many we need to subtract to get to the pixel in
 412          * the top left corner of the mean window (considering the current
 413          * pixel as the center)
 414          */
 415         seek = deb_mean_win_size / 2;
 416
 417         /* Sum the values of the colors in the mean window */
 418
 419         dev_dbg(vdeb->dev,
 420                 "deb: %s: --- Calc pixel %dx%d, window mean %d, seek %d ---\n",
 421                 vdeb->sd.name, lin, col, vdeb->sink_fmt.height, seek);
 422
 423         /*
 424          * Iterate through all the lines in the mean window, start
 425          * with zero if the pixel is outside the frame and don't pass
 426          * the height when the pixel is in the bottom border of the
 427          * frame
 428          */
 429         for (wlin = seek > lin ? 0 : lin - seek;
 430              wlin < lin + seek + 1 && wlin < vdeb->sink_fmt.height;
 431              wlin++) {
 432
 433                 /*
 434                  * Iterate through all the columns in the mean window, start
 435                  * with zero if the pixel is outside the frame and don't pass
 436                  * the width when the pixel is in the right border of the
 437                  * frame
 438                  */
 439                 for (wcol = seek > col ? 0 : col - seek;
 440                      wcol < col + seek + 1 && wcol < vdeb->sink_fmt.width;
 441                      wcol++) {
 442                         enum vimc_deb_rgb_colors color;
 443                         unsigned int index;
 444
 445                         /* Check which color this pixel is */
 446                         color = vdeb->sink_pix_map->order[wlin % 2][wcol % 2];
 447
 448                         index = VIMC_FRAME_INDEX(wlin, wcol,
 449                                                  vdeb->sink_fmt.width,
 450                                                  vdeb->sink_bpp);
 451
 452                         dev_dbg(vdeb->dev,
 453                                 "deb: %s: RGB CALC: frame index %d, win pos %dx%d, color %d\n",
 454                                 vdeb->sd.name, index, wlin, wcol, color);
 455
 456                         /* Get its value */
 457                         rgb[color] = rgb[color] +
 458                                 vimc_deb_get_val(&frame[index], vdeb->sink_bpp);
 459
 460                         /* Save how many values we already added */
 461                         n_rgb[color]++;
 462
 463                         dev_dbg(vdeb->dev, "deb: %s: RGB CALC: val %d, n %d\n",
 464                                 vdeb->sd.name, rgb[color], n_rgb[color]);
 465                 }
 466         }
 467
 468         /* Calculate the mean */
 469         for (i = 0; i < 3; i++) {
 470                 dev_dbg(vdeb->dev,
 471                         "deb: %s: PRE CALC: %dx%d Color %d, val %d, n %d\n",
 472                         vdeb->sd.name, lin, col, i, rgb[i], n_rgb[i]);
 473
 474                 if (n_rgb[i])
 475                         rgb[i] = rgb[i] / n_rgb[i];
 476
 477                 dev_dbg(vdeb->dev,
 478                         "deb: %s: FINAL CALC: %dx%d Color %d, val %d\n",
 479                         vdeb->sd.name, lin, col, i, rgb[i]);
 480         }
 481 }
 482
 483 static void *vimc_deb_process_frame(struct vimc_ent_device *ved,
 484                                     const void *sink_frame)
 485 {
 486         struct vimc_deb_device *vdeb = container_of(ved, struct vimc_deb_device,
 487                                                     ved);
 488         unsigned int rgb[3];
 489         unsigned int i, j;
 490
 491         /* If the stream in this node is not active, just return */
 492         if (!vdeb->src_frame)
 493                 return ERR_PTR(-EINVAL);
 494
 495         for (i = 0; i < vdeb->sink_fmt.height; i++)
 496                 for (j = 0; j < vdeb->sink_fmt.width; j++) {
 497                         vimc_deb_calc_rgb_sink(vdeb, sink_frame, i, j, rgb);
 498                         vdeb->set_rgb_src(vdeb, i, j, rgb);
 499                 }
 500
 501         return vdeb->src_frame;
 502
 503 }
 504
 505 static void vimc_deb_release(struct v4l2_subdev *sd)
 506 {
 507         struct vimc_deb_device *vdeb =
 508                                 container_of(sd, struct vimc_deb_device, sd);
 509
 510         kfree(vdeb);
 511 }
 512
 513 static const struct v4l2_subdev_internal_ops vimc_deb_int_ops = {
 514         .release = vimc_deb_release,
 515 };
 516
 517 static void vimc_deb_comp_unbind(struct device *comp, struct device *master,
 518                                  void *master_data)
 519 {
 520         struct vimc_ent_device *ved = dev_get_drvdata(comp);
 521         struct vimc_deb_device *vdeb = container_of(ved, struct vimc_deb_device,
 522                                                     ved);
 523
 524         vimc_ent_sd_unregister(ved, &vdeb->sd);
 525 }
 526
 527 static int vimc_deb_comp_bind(struct device *comp, struct device *master,
 528                               void *master_data)
 529 {
 530         struct v4l2_device *v4l2_dev = master_data;
 531         struct vimc_platform_data *pdata = comp->platform_data;
 532         struct vimc_deb_device *vdeb;
 533         int ret;
 534
 535         /* Allocate the vdeb struct */
 536         vdeb = kzalloc(sizeof(*vdeb), GFP_KERNEL);
 537         if (!vdeb)
 538                 return -ENOMEM;
 539
 540         /* Initialize ved and sd */
 541         ret = vimc_ent_sd_register(&vdeb->ved, &vdeb->sd, v4l2_dev,
 542                                    pdata->entity_name,
 543                                    MEDIA_ENT_F_PROC_VIDEO_PIXEL_ENC_CONV, 2,
 544                                    (const unsigned long[2]) {MEDIA_PAD_FL_SINK,
 545                                    MEDIA_PAD_FL_SOURCE},
 546                                    &vimc_deb_int_ops, &vimc_deb_ops);
 547         if (ret) {
 548                 kfree(vdeb);
 549                 return ret;
 550         }
 551
 552         vdeb->ved.process_frame = vimc_deb_process_frame;
 553         dev_set_drvdata(comp, &vdeb->ved);
 554         vdeb->dev = comp;
 555
 556         /* Initialize the frame format */
 557         vdeb->sink_fmt = sink_fmt_default;
 558         vdeb->src_code = VIMC_DEB_SRC_MBUS_FMT_DEFAULT;
 559         /*
 560          * TODO: Add support for more output formats, we only support
 561          * RGB24 for now.
 562          * NOTE: the src format is always the same as the sink, except
 563          * for the code
 564          */
 565         vdeb->set_rgb_src = vimc_deb_set_rgb_pix_rgb24;
 566
 567         return 0;
 568 }
 569
 570 static const struct component_ops vimc_deb_comp_ops = {
 571         .bind = vimc_deb_comp_bind,
 572         .unbind = vimc_deb_comp_unbind,
 573 };
 574
 575 static int vimc_deb_probe(struct platform_device *pdev)
 576 {
 577         return component_add(&pdev->dev, &vimc_deb_comp_ops);
 578 }
 579
 580 static int vimc_deb_remove(struct platform_device *pdev)
 581 {
 582         component_del(&pdev->dev, &vimc_deb_comp_ops);
 583
 584         return 0;
 585 }
 586
 587 static const struct platform_device_id vimc_deb_driver_ids[] = {
 588         {
 589                 .name           = VIMC_DEB_DRV_NAME,
 590         },
 591         { }
 592 };
 593
 594 static struct platform_driver vimc_deb_pdrv = {
 595         .probe          = vimc_deb_probe,
 596         .remove         = vimc_deb_remove,
 597         .id_table       = vimc_deb_driver_ids,
 598         .driver         = {
 599                 .name   = VIMC_DEB_DRV_NAME,
 600         },
 601 };
 602
 603 module_platform_driver(vimc_deb_pdrv);
 604
 605 MODULE_DEVICE_TABLE(platform, vimc_deb_driver_ids);
 606
 607 MODULE_DESCRIPTION("Virtual Media Controller Driver (VIMC) Debayer");
 608 MODULE_AUTHOR("Helen Mae Koike Fornazier <helen.fornazier@gmail.com>");
 609 MODULE_LICENSE("GPL");