drivers/media/platform/exynos4-is/fimc-lite.c

   1 /*
   2  * Samsung EXYNOS FIMC-LITE (camera host interface) driver
   3 *
   4  * Copyright (C) 2012 - 2013 Samsung Electronics Co., Ltd.
   5  * Author: Sylwester Nawrocki <s.nawrocki@samsung.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 version 2 as
   9  * published by the Free Software Foundation.
  10  */
  11 #define pr_fmt(fmt) "%s:%d " fmt, __func__, __LINE__
  12
  13 #include <linux/bug.h>
  14 #include <linux/clk.h>
  15 #include <linux/device.h>
  16 #include <linux/errno.h>
  17 #include <linux/interrupt.h>
  18 #include <linux/kernel.h>
  19 #include <linux/list.h>
  20 #include <linux/module.h>
  21 #include <linux/of.h>
  22 #include <linux/types.h>
  23 #include <linux/platform_device.h>
  24 #include <linux/pm_runtime.h>
  25 #include <linux/slab.h>
  26 #include <linux/videodev2.h>
  27
  28 #include <media/v4l2-device.h>
  29 #include <media/v4l2-ioctl.h>
  30 #include <media/v4l2-mem2mem.h>
  31 #include <media/videobuf2-core.h>
  32 #include <media/videobuf2-dma-contig.h>
  33 #include <media/s5p_fimc.h>
  34
  35 #include "common.h"
  36 #include "fimc-core.h"
  37 #include "fimc-lite.h"
  38 #include "fimc-lite-reg.h"
  39
  40 static int debug;
  41 module_param(debug, int, 0644);
  42
  43 static const struct fimc_fmt fimc_lite_formats[] = {
  44         {
  45                 .name           = "YUV 4:2:2 packed, YCbYCr",
  46                 .fourcc         = V4L2_PIX_FMT_YUYV,
  47                 .colorspace     = V4L2_COLORSPACE_JPEG,
  48                 .depth          = { 16 },
  49                 .color          = FIMC_FMT_YCBYCR422,
  50                 .memplanes      = 1,
  51                 .mbus_code      = V4L2_MBUS_FMT_YUYV8_2X8,
  52                 .flags          = FMT_FLAGS_YUV,
  53         }, {
  54                 .name           = "YUV 4:2:2 packed, CbYCrY",
  55                 .fourcc         = V4L2_PIX_FMT_UYVY,
  56                 .colorspace     = V4L2_COLORSPACE_JPEG,
  57                 .depth          = { 16 },
  58                 .color          = FIMC_FMT_CBYCRY422,
  59                 .memplanes      = 1,
  60                 .mbus_code      = V4L2_MBUS_FMT_UYVY8_2X8,
  61                 .flags          = FMT_FLAGS_YUV,
  62         }, {
  63                 .name           = "YUV 4:2:2 packed, CrYCbY",
  64                 .fourcc         = V4L2_PIX_FMT_VYUY,
  65                 .colorspace     = V4L2_COLORSPACE_JPEG,
  66                 .depth          = { 16 },
  67                 .color          = FIMC_FMT_CRYCBY422,
  68                 .memplanes      = 1,
  69                 .mbus_code      = V4L2_MBUS_FMT_VYUY8_2X8,
  70                 .flags          = FMT_FLAGS_YUV,
  71         }, {
  72                 .name           = "YUV 4:2:2 packed, YCrYCb",
  73                 .fourcc         = V4L2_PIX_FMT_YVYU,
  74                 .colorspace     = V4L2_COLORSPACE_JPEG,
  75                 .depth          = { 16 },
  76                 .color          = FIMC_FMT_YCRYCB422,
  77                 .memplanes      = 1,
  78                 .mbus_code      = V4L2_MBUS_FMT_YVYU8_2X8,
  79                 .flags          = FMT_FLAGS_YUV,
  80         }, {
  81                 .name           = "RAW8 (GRBG)",
  82                 .fourcc         = V4L2_PIX_FMT_SGRBG8,
  83                 .colorspace     = V4L2_COLORSPACE_SRGB,
  84                 .depth          = { 8 },
  85                 .color          = FIMC_FMT_RAW8,
  86                 .memplanes      = 1,
  87                 .mbus_code      = V4L2_MBUS_FMT_SGRBG8_1X8,
  88                 .flags          = FMT_FLAGS_RAW_BAYER,
  89         }, {
  90                 .name           = "RAW10 (GRBG)",
  91                 .fourcc         = V4L2_PIX_FMT_SGRBG10,
  92                 .colorspace     = V4L2_COLORSPACE_SRGB,
  93                 .depth          = { 16 },
  94                 .color          = FIMC_FMT_RAW10,
  95                 .memplanes      = 1,
  96                 .mbus_code      = V4L2_MBUS_FMT_SGRBG10_1X10,
  97                 .flags          = FMT_FLAGS_RAW_BAYER,
  98         }, {
  99                 .name           = "RAW12 (GRBG)",
 100                 .fourcc         = V4L2_PIX_FMT_SGRBG12,
 101                 .colorspace     = V4L2_COLORSPACE_SRGB,
 102                 .depth          = { 16 },
 103                 .color          = FIMC_FMT_RAW12,
 104                 .memplanes      = 1,
 105                 .mbus_code      = V4L2_MBUS_FMT_SGRBG12_1X12,
 106                 .flags          = FMT_FLAGS_RAW_BAYER,
 107         },
 108 };
 109
 110 /**
 111  * fimc_lite_find_format - lookup fimc color format by fourcc or media bus code
 112  * @pixelformat: fourcc to match, ignored if null
 113  * @mbus_code: media bus code to match, ignored if null
 114  * @mask: the color format flags to match
 115  * @index: index to the fimc_lite_formats array, ignored if negative
 116  */
 117 static const struct fimc_fmt *fimc_lite_find_format(const u32 *pixelformat,
 118                         const u32 *mbus_code, unsigned int mask, int index)
 119 {
 120         const struct fimc_fmt *fmt, *def_fmt = NULL;
 121         unsigned int i;
 122         int id = 0;
 123
 124         if (index >= (int)ARRAY_SIZE(fimc_lite_formats))
 125                 return NULL;
 126
 127         for (i = 0; i < ARRAY_SIZE(fimc_lite_formats); ++i) {
 128                 fmt = &fimc_lite_formats[i];
 129                 if (mask && !(fmt->flags & mask))
 130                         continue;
 131                 if (pixelformat && fmt->fourcc == *pixelformat)
 132                         return fmt;
 133                 if (mbus_code && fmt->mbus_code == *mbus_code)
 134                         return fmt;
 135                 if (index == id)
 136                         def_fmt = fmt;
 137                 id++;
 138         }
 139         return def_fmt;
 140 }
 141
 142 static int fimc_lite_hw_init(struct fimc_lite *fimc, bool isp_output)
 143 {
 144         struct fimc_source_info *si;
 145         unsigned long flags;
 146
 147         if (fimc->sensor == NULL)
 148                 return -ENXIO;
 149
 150         if (fimc->inp_frame.fmt == NULL || fimc->out_frame.fmt == NULL)
 151                 return -EINVAL;
 152
 153         /* Get sensor configuration data from the sensor subdev */
 154         si = v4l2_get_subdev_hostdata(fimc->sensor);
 155         if (!si)
 156                 return -EINVAL;
 157
 158         spin_lock_irqsave(&fimc->slock, flags);
 159
 160         flite_hw_set_camera_bus(fimc, si);
 161         flite_hw_set_source_format(fimc, &fimc->inp_frame);
 162         flite_hw_set_window_offset(fimc, &fimc->inp_frame);
 163         flite_hw_set_dma_buf_mask(fimc, 0);
 164         flite_hw_set_output_path(fimc, !isp_output, isp_output);
 165         if (!isp_output)
 166                 flite_hw_configure_output_dma(fimc, &fimc->out_frame);
 167         flite_hw_clear_last_capture_end(fimc);
 168         flite_hw_set_interrupt_mask(fimc);
 169         flite_hw_set_test_pattern(fimc, fimc->test_pattern->val);
 170
 171         if (debug > 0)
 172                 flite_hw_dump_regs(fimc, __func__);
 173
 174         spin_unlock_irqrestore(&fimc->slock, flags);
 175         return 0;
 176 }
 177
 178 /*
 179  * Reinitialize the driver so it is ready to start the streaming again.
 180  * Set fimc->state to indicate stream off and the hardware shut down state.
 181  * If not suspending (@suspend is false), return any buffers to videobuf2.
 182  * Otherwise put any owned buffers onto the pending buffers queue, so they
 183  * can be re-spun when the device is being resumed. Also perform FIMC
 184  * software reset and disable streaming on the whole pipeline if required.
 185  */
 186 static int fimc_lite_reinit(struct fimc_lite *fimc, bool suspend)
 187 {
 188         struct flite_buffer *buf;
 189         unsigned long flags;
 190         bool streaming;
 191
 192         spin_lock_irqsave(&fimc->slock, flags);
 193         streaming = fimc->state & (1 << ST_SENSOR_STREAM);
 194
 195         fimc->state &= ~(1 << ST_FLITE_RUN | 1 << ST_FLITE_OFF |
 196                          1 << ST_FLITE_STREAM | 1 << ST_SENSOR_STREAM);
 197         if (suspend)
 198                 fimc->state |= (1 << ST_FLITE_SUSPENDED);
 199         else
 200                 fimc->state &= ~(1 << ST_FLITE_PENDING |
 201                                  1 << ST_FLITE_SUSPENDED);
 202
 203         /* Release unused buffers */
 204         while (!suspend && !list_empty(&fimc->pending_buf_q)) {
 205                 buf = fimc_lite_pending_queue_pop(fimc);
 206                 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
 207         }
 208         /* If suspending put unused buffers onto pending queue */
 209         while (!list_empty(&fimc->active_buf_q)) {
 210                 buf = fimc_lite_active_queue_pop(fimc);
 211                 if (suspend)
 212                         fimc_lite_pending_queue_add(fimc, buf);
 213                 else
 214                         vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
 215         }
 216
 217         spin_unlock_irqrestore(&fimc->slock, flags);
 218
 219         flite_hw_reset(fimc);
 220
 221         if (!streaming)
 222                 return 0;
 223
 224         return fimc_pipeline_call(&fimc->ve, set_stream, 0);
 225 }
 226
 227 static int fimc_lite_stop_capture(struct fimc_lite *fimc, bool suspend)
 228 {
 229         unsigned long flags;
 230
 231         if (!fimc_lite_active(fimc))
 232                 return 0;
 233
 234         spin_lock_irqsave(&fimc->slock, flags);
 235         set_bit(ST_FLITE_OFF, &fimc->state);
 236         flite_hw_capture_stop(fimc);
 237         spin_unlock_irqrestore(&fimc->slock, flags);
 238
 239         wait_event_timeout(fimc->irq_queue,
 240                            !test_bit(ST_FLITE_OFF, &fimc->state),
 241                            (2*HZ/10)); /* 200 ms */
 242
 243         return fimc_lite_reinit(fimc, suspend);
 244 }
 245
 246 /* Must be called  with fimc.slock spinlock held. */
 247 static void fimc_lite_config_update(struct fimc_lite *fimc)
 248 {
 249         flite_hw_set_window_offset(fimc, &fimc->inp_frame);
 250         flite_hw_set_dma_window(fimc, &fimc->out_frame);
 251         flite_hw_set_test_pattern(fimc, fimc->test_pattern->val);
 252         clear_bit(ST_FLITE_CONFIG, &fimc->state);
 253 }
 254
 255 static irqreturn_t flite_irq_handler(int irq, void *priv)
 256 {
 257         struct fimc_lite *fimc = priv;
 258         struct flite_buffer *vbuf;
 259         unsigned long flags;
 260         struct timeval *tv;
 261         struct timespec ts;
 262         u32 intsrc;
 263
 264         spin_lock_irqsave(&fimc->slock, flags);
 265
 266         intsrc = flite_hw_get_interrupt_source(fimc);
 267         flite_hw_clear_pending_irq(fimc);
 268
 269         if (test_and_clear_bit(ST_FLITE_OFF, &fimc->state)) {
 270                 wake_up(&fimc->irq_queue);
 271                 goto done;
 272         }
 273
 274         if (intsrc & FLITE_REG_CISTATUS_IRQ_SRC_OVERFLOW) {
 275                 clear_bit(ST_FLITE_RUN, &fimc->state);
 276                 fimc->events.data_overflow++;
 277         }
 278
 279         if (intsrc & FLITE_REG_CISTATUS_IRQ_SRC_LASTCAPEND) {
 280                 flite_hw_clear_last_capture_end(fimc);
 281                 clear_bit(ST_FLITE_STREAM, &fimc->state);
 282                 wake_up(&fimc->irq_queue);
 283         }
 284
 285         if (atomic_read(&fimc->out_path) != FIMC_IO_DMA)
 286                 goto done;
 287
 288         if ((intsrc & FLITE_REG_CISTATUS_IRQ_SRC_FRMSTART)){
 289                 if (test_bit(ST_FLITE_RUN, &fimc->state) &&
 290                     !list_empty(&fimc->pending_buf_q)) {
 291                         vbuf = fimc_lite_pending_queue_pop(fimc);
 292                         flite_hw_set_dma_buffer(fimc, vbuf);
 293                         fimc_lite_active_queue_add(fimc, vbuf);
 294                 }
 295         }
 296
 297         if ((intsrc & FLITE_REG_CISTATUS_IRQ_SRC_FRMEND)) {
 298                 if (test_bit(ST_FLITE_RUN, &fimc->state) &&
 299                 !list_empty(&fimc->active_buf_q)) {
 300                         vbuf = fimc_lite_active_queue_pop(fimc);
 301                         ktime_get_ts(&ts);
 302                         tv = &vbuf->vb.v4l2_buf.timestamp;
 303                         tv->tv_sec = ts.tv_sec;
 304                         tv->tv_usec = ts.tv_nsec / NSEC_PER_USEC;
 305                         vbuf->vb.v4l2_buf.sequence = fimc->frame_count++;
 306                         flite_hw_mask_dma_buffer(fimc, vbuf->index);
 307                         vb2_buffer_done(&vbuf->vb, VB2_BUF_STATE_DONE);
 308                 }
 309                 v4l2_subdev_notify(&fimc->subdev, EXYNOS_FIMC_IS_FRAME_DONE, NULL);
 310         }
 311
 312         if (test_bit(ST_FLITE_CONFIG, &fimc->state))
 313                 fimc_lite_config_update(fimc);
 314
 315         if (list_empty(&fimc->pending_buf_q)) {
 316                 flite_hw_capture_stop(fimc);
 317                 clear_bit(ST_FLITE_STREAM, &fimc->state);
 318         }
 319 done:
 320         set_bit(ST_FLITE_RUN, &fimc->state);
 321         spin_unlock_irqrestore(&fimc->slock, flags);
 322         return IRQ_HANDLED;
 323 }
 324
 325 static int start_streaming(struct vb2_queue *q, unsigned int count)
 326 {
 327         struct fimc_lite *fimc = q->drv_priv;
 328         unsigned long flags;
 329         int ret;
 330
 331         spin_lock_irqsave(&fimc->slock, flags);
 332
 333         fimc->buf_index = 0;
 334         fimc->frame_count = 0;
 335
 336         spin_unlock_irqrestore(&fimc->slock, flags);
 337
 338         ret = fimc_lite_hw_init(fimc, false);
 339         if (ret) {
 340                 fimc_lite_reinit(fimc, false);
 341                 return ret;
 342         }
 343
 344         set_bit(ST_FLITE_PENDING, &fimc->state);
 345
 346         if (!list_empty(&fimc->active_buf_q) &&
 347             !test_and_set_bit(ST_FLITE_STREAM, &fimc->state)) {
 348                 flite_hw_capture_start(fimc);
 349
 350                 if (!test_and_set_bit(ST_SENSOR_STREAM, &fimc->state))
 351                         fimc_pipeline_call(&fimc->ve, set_stream, 1);
 352         }
 353         if (debug > 0)
 354                 flite_hw_dump_regs(fimc, __func__);
 355
 356         return 0;
 357 }
 358
 359 static void stop_streaming(struct vb2_queue *q)
 360 {
 361         struct fimc_lite *fimc = q->drv_priv;
 362
 363         if (!fimc_lite_active(fimc))
 364                 return;
 365
 366         fimc_lite_stop_capture(fimc, false);
 367 }
 368
 369 static int queue_setup(struct vb2_queue *vq, const struct v4l2_format *pfmt,
 370                        unsigned int *num_buffers, unsigned int *num_planes,
 371                        unsigned int sizes[], void *allocators[])
 372 {
 373         const struct v4l2_pix_format_mplane *pixm = NULL;
 374         struct fimc_lite *fimc = vq->drv_priv;
 375         struct flite_frame *frame = &fimc->out_frame;
 376         const struct fimc_fmt *fmt = frame->fmt;
 377         unsigned long wh;
 378         int i;
 379
 380         if (pfmt) {
 381                 pixm = &pfmt->fmt.pix_mp;
 382                 fmt = fimc_lite_find_format(&pixm->pixelformat, NULL, 0, -1);
 383                 wh = pixm->width * pixm->height;
 384         } else {
 385                 wh = frame->f_width * frame->f_height;
 386         }
 387
 388         if (fmt == NULL)
 389                 return -EINVAL;
 390
 391         *num_planes = fmt->memplanes;
 392
 393         for (i = 0; i < fmt->memplanes; i++) {
 394                 unsigned int size = (wh * fmt->depth[i]) / 8;
 395                 if (pixm)
 396                         sizes[i] = max(size, pixm->plane_fmt[i].sizeimage);
 397                 else
 398                         sizes[i] = size;
 399                 allocators[i] = fimc->alloc_ctx;
 400         }
 401
 402         return 0;
 403 }
 404
 405 static int buffer_prepare(struct vb2_buffer *vb)
 406 {
 407         struct vb2_queue *vq = vb->vb2_queue;
 408         struct fimc_lite *fimc = vq->drv_priv;
 409         int i;
 410
 411         if (fimc->out_frame.fmt == NULL)
 412                 return -EINVAL;
 413
 414         for (i = 0; i < fimc->out_frame.fmt->memplanes; i++) {
 415                 unsigned long size = fimc->payload[i];
 416
 417                 if (vb2_plane_size(vb, i) < size) {
 418                         v4l2_err(&fimc->ve.vdev,
 419                                  "User buffer too small (%ld < %ld)\n",
 420                                  vb2_plane_size(vb, i), size);
 421                         return -EINVAL;
 422                 }
 423                 vb2_set_plane_payload(vb, i, size);
 424         }
 425
 426         return 0;
 427 }
 428
 429 static void buffer_queue(struct vb2_buffer *vb)
 430 {
 431         struct flite_buffer *buf
 432                 = container_of(vb, struct flite_buffer, vb);
 433         struct fimc_lite *fimc = vb2_get_drv_priv(vb->vb2_queue);
 434         unsigned long flags;
 435
 436         spin_lock_irqsave(&fimc->slock, flags);
 437         buf->paddr = vb2_dma_contig_plane_dma_addr(vb, 0);
 438
 439         buf->index = fimc->buf_index++;
 440         if (fimc->buf_index >= fimc->reqbufs_count)
 441                 fimc->buf_index = 0;
 442
 443         if (!test_bit(ST_FLITE_SUSPENDED, &fimc->state) &&
 444             !test_bit(ST_FLITE_STREAM, &fimc->state) &&
 445             list_empty(&fimc->active_buf_q)) {
 446                 flite_hw_set_dma_buffer(fimc, buf);
 447                 fimc_lite_active_queue_add(fimc, buf);
 448         } else {
 449                 fimc_lite_pending_queue_add(fimc, buf);
 450         }
 451
 452         if (vb2_is_streaming(&fimc->vb_queue) &&
 453             !list_empty(&fimc->pending_buf_q) &&
 454             !test_and_set_bit(ST_FLITE_STREAM, &fimc->state)) {
 455                 flite_hw_capture_start(fimc);
 456                 spin_unlock_irqrestore(&fimc->slock, flags);
 457
 458                 if (!test_and_set_bit(ST_SENSOR_STREAM, &fimc->state))
 459                         fimc_pipeline_call(&fimc->ve, set_stream, 1);
 460                 return;
 461         }
 462         spin_unlock_irqrestore(&fimc->slock, flags);
 463 }
 464
 465 static const struct vb2_ops fimc_lite_qops = {
 466         .queue_setup     = queue_setup,
 467         .buf_prepare     = buffer_prepare,
 468         .buf_queue       = buffer_queue,
 469         .wait_prepare    = vb2_ops_wait_prepare,
 470         .wait_finish     = vb2_ops_wait_finish,
 471         .start_streaming = start_streaming,
 472         .stop_streaming  = stop_streaming,
 473 };
 474
 475 static void fimc_lite_clear_event_counters(struct fimc_lite *fimc)
 476 {
 477         unsigned long flags;
 478
 479         spin_lock_irqsave(&fimc->slock, flags);
 480         memset(&fimc->events, 0, sizeof(fimc->events));
 481         spin_unlock_irqrestore(&fimc->slock, flags);
 482 }
 483
 484 static int fimc_lite_open(struct file *file)
 485 {
 486         struct fimc_lite *fimc = video_drvdata(file);
 487         struct media_entity *me = &fimc->ve.vdev.entity;
 488         int ret;
 489
 490         mutex_lock(&fimc->lock);
 491         if (atomic_read(&fimc->out_path) != FIMC_IO_DMA) {
 492                 ret = -EBUSY;
 493                 goto unlock;
 494         }
 495
 496         set_bit(ST_FLITE_IN_USE, &fimc->state);
 497         ret = pm_runtime_get_sync(&fimc->pdev->dev);
 498         if (ret < 0)
 499                 goto unlock;
 500
 501         ret = v4l2_fh_open(file);
 502         if (ret < 0)
 503                 goto err_pm;
 504
 505         if (!v4l2_fh_is_singular_file(file) ||
 506             atomic_read(&fimc->out_path) != FIMC_IO_DMA)
 507                 goto unlock;
 508
 509         mutex_lock(&me->parent->graph_mutex);
 510
 511         ret = fimc_pipeline_call(&fimc->ve, open, me, true);
 512
 513         /* Mark video pipeline ending at this video node as in use. */
 514         if (ret == 0)
 515                 me->use_count++;
 516
 517         mutex_unlock(&me->parent->graph_mutex);
 518
 519         if (!ret) {
 520                 fimc_lite_clear_event_counters(fimc);
 521                 goto unlock;
 522         }
 523
 524         v4l2_fh_release(file);
 525 err_pm:
 526         pm_runtime_put_sync(&fimc->pdev->dev);
 527         clear_bit(ST_FLITE_IN_USE, &fimc->state);
 528 unlock:
 529         mutex_unlock(&fimc->lock);
 530         return ret;
 531 }
 532
 533 static int fimc_lite_release(struct file *file)
 534 {
 535         struct fimc_lite *fimc = video_drvdata(file);
 536         struct media_entity *entity = &fimc->ve.vdev.entity;
 537
 538         mutex_lock(&fimc->lock);
 539
 540         if (v4l2_fh_is_singular_file(file) &&
 541             atomic_read(&fimc->out_path) == FIMC_IO_DMA) {
 542                 if (fimc->streaming) {
 543                         media_entity_pipeline_stop(entity);
 544                         fimc->streaming = false;
 545                 }
 546                 fimc_lite_stop_capture(fimc, false);
 547                 fimc_pipeline_call(&fimc->ve, close);
 548                 clear_bit(ST_FLITE_IN_USE, &fimc->state);
 549
 550                 mutex_lock(&entity->parent->graph_mutex);
 551                 entity->use_count--;
 552                 mutex_unlock(&entity->parent->graph_mutex);
 553         }
 554
 555         _vb2_fop_release(file, NULL);
 556         pm_runtime_put(&fimc->pdev->dev);
 557         clear_bit(ST_FLITE_SUSPENDED, &fimc->state);
 558
 559         mutex_unlock(&fimc->lock);
 560         return 0;
 561 }
 562
 563 static const struct v4l2_file_operations fimc_lite_fops = {
 564         .owner          = THIS_MODULE,
 565         .open           = fimc_lite_open,
 566         .release        = fimc_lite_release,
 567         .poll           = vb2_fop_poll,
 568         .unlocked_ioctl = video_ioctl2,
 569         .mmap           = vb2_fop_mmap,
 570 };
 571
 572 /*
 573  * Format and crop negotiation helpers
 574  */
 575
 576 static const struct fimc_fmt *fimc_lite_subdev_try_fmt(struct fimc_lite *fimc,
 577                                         struct v4l2_subdev_fh *fh,
 578                                         struct v4l2_subdev_format *format)
 579 {
 580         struct flite_drvdata *dd = fimc->dd;
 581         struct v4l2_mbus_framefmt *mf = &format->format;
 582         const struct fimc_fmt *fmt = NULL;
 583
 584         if (format->pad == FLITE_SD_PAD_SINK) {
 585                 v4l_bound_align_image(&mf->width, 8, dd->max_width,
 586                                 ffs(dd->out_width_align) - 1,
 587                                 &mf->height, 0, dd->max_height, 0, 0);
 588
 589                 fmt = fimc_lite_find_format(NULL, &mf->code, 0, 0);
 590                 if (WARN_ON(!fmt))
 591                         return NULL;
 592
 593                 mf->colorspace = fmt->colorspace;
 594                 mf->code = fmt->mbus_code;
 595         } else {
 596                 struct flite_frame *sink = &fimc->inp_frame;
 597                 struct v4l2_mbus_framefmt *sink_fmt;
 598                 struct v4l2_rect *rect;
 599
 600                 if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
 601                         sink_fmt = v4l2_subdev_get_try_format(fh,
 602                                                 FLITE_SD_PAD_SINK);
 603
 604                         mf->code = sink_fmt->code;
 605                         mf->colorspace = sink_fmt->colorspace;
 606
 607                         rect = v4l2_subdev_get_try_crop(fh,
 608                                                 FLITE_SD_PAD_SINK);
 609                 } else {
 610                         mf->code = sink->fmt->mbus_code;
 611                         mf->colorspace = sink->fmt->colorspace;
 612                         rect = &sink->rect;
 613                 }
 614
 615                 /* Allow changing format only on sink pad */
 616                 mf->width = rect->width;
 617                 mf->height = rect->height;
 618         }
 619
 620         mf->field = V4L2_FIELD_NONE;
 621
 622         v4l2_dbg(1, debug, &fimc->subdev, "code: %#x (%d), %dx%d\n",
 623                  mf->code, mf->colorspace, mf->width, mf->height);
 624
 625         return fmt;
 626 }
 627
 628 static void fimc_lite_try_crop(struct fimc_lite *fimc, struct v4l2_rect *r)
 629 {
 630         struct flite_frame *frame = &fimc->inp_frame;
 631
 632         v4l_bound_align_image(&r->width, 0, frame->f_width, 0,
 633                               &r->height, 0, frame->f_height, 0, 0);
 634
 635         /* Adjust left/top if cropping rectangle got out of bounds */
 636         r->left = clamp_t(u32, r->left, 0, frame->f_width - r->width);
 637         r->left = round_down(r->left, fimc->dd->win_hor_offs_align);
 638         r->top  = clamp_t(u32, r->top, 0, frame->f_height - r->height);
 639
 640         v4l2_dbg(1, debug, &fimc->subdev, "(%d,%d)/%dx%d, sink fmt: %dx%d\n",
 641                  r->left, r->top, r->width, r->height,
 642                  frame->f_width, frame->f_height);
 643 }
 644
 645 static void fimc_lite_try_compose(struct fimc_lite *fimc, struct v4l2_rect *r)
 646 {
 647         struct flite_frame *frame = &fimc->out_frame;
 648         struct v4l2_rect *crop_rect = &fimc->inp_frame.rect;
 649
 650         /* Scaling is not supported so we enforce compose rectangle size
 651            same as size of the sink crop rectangle. */
 652         r->width = crop_rect->width;
 653         r->height = crop_rect->height;
 654
 655         /* Adjust left/top if the composing rectangle got out of bounds */
 656         r->left = clamp_t(u32, r->left, 0, frame->f_width - r->width);
 657         r->left = round_down(r->left, fimc->dd->out_hor_offs_align);
 658         r->top  = clamp_t(u32, r->top, 0, fimc->out_frame.f_height - r->height);
 659
 660         v4l2_dbg(1, debug, &fimc->subdev, "(%d,%d)/%dx%d, source fmt: %dx%d\n",
 661                  r->left, r->top, r->width, r->height,
 662                  frame->f_width, frame->f_height);
 663 }
 664
 665 /*
 666  * Video node ioctl operations
 667  */
 668 static int fimc_lite_querycap(struct file *file, void *priv,
 669                                         struct v4l2_capability *cap)
 670 {
 671         struct fimc_lite *fimc = video_drvdata(file);
 672
 673         strlcpy(cap->driver, FIMC_LITE_DRV_NAME, sizeof(cap->driver));
 674         strlcpy(cap->card, FIMC_LITE_DRV_NAME, sizeof(cap->card));
 675         snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
 676                                         dev_name(&fimc->pdev->dev));
 677
 678         cap->device_caps = V4L2_CAP_STREAMING;
 679         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
 680         return 0;
 681 }
 682
 683 static int fimc_lite_enum_fmt_mplane(struct file *file, void *priv,
 684                                      struct v4l2_fmtdesc *f)
 685 {
 686         const struct fimc_fmt *fmt;
 687
 688         if (f->index >= ARRAY_SIZE(fimc_lite_formats))
 689                 return -EINVAL;
 690
 691         fmt = &fimc_lite_formats[f->index];
 692         strlcpy(f->description, fmt->name, sizeof(f->description));
 693         f->pixelformat = fmt->fourcc;
 694
 695         return 0;
 696 }
 697
 698 static int fimc_lite_g_fmt_mplane(struct file *file, void *fh,
 699                                   struct v4l2_format *f)
 700 {
 701         struct fimc_lite *fimc = video_drvdata(file);
 702         struct v4l2_pix_format_mplane *pixm = &f->fmt.pix_mp;
 703         struct v4l2_plane_pix_format *plane_fmt = &pixm->plane_fmt[0];
 704         struct flite_frame *frame = &fimc->out_frame;
 705         const struct fimc_fmt *fmt = frame->fmt;
 706
 707         plane_fmt->bytesperline = (frame->f_width * fmt->depth[0]) / 8;
 708         plane_fmt->sizeimage = plane_fmt->bytesperline * frame->f_height;
 709
 710         pixm->num_planes = fmt->memplanes;
 711         pixm->pixelformat = fmt->fourcc;
 712         pixm->width = frame->f_width;
 713         pixm->height = frame->f_height;
 714         pixm->field = V4L2_FIELD_NONE;
 715         pixm->colorspace = fmt->colorspace;
 716         return 0;
 717 }
 718
 719 static int fimc_lite_try_fmt(struct fimc_lite *fimc,
 720                              struct v4l2_pix_format_mplane *pixm,
 721                              const struct fimc_fmt **ffmt)
 722 {
 723         u32 bpl = pixm->plane_fmt[0].bytesperline;
 724         struct flite_drvdata *dd = fimc->dd;
 725         const struct fimc_fmt *inp_fmt = fimc->inp_frame.fmt;
 726         const struct fimc_fmt *fmt;
 727
 728         if (WARN_ON(inp_fmt == NULL))
 729                 return -EINVAL;
 730         /*
 731          * We allow some flexibility only for YUV formats. In case of raw
 732          * raw Bayer the FIMC-LITE's output format must match its camera
 733          * interface input format.
 734          */
 735         if (inp_fmt->flags & FMT_FLAGS_YUV)
 736                 fmt = fimc_lite_find_format(&pixm->pixelformat, NULL,
 737                                                 inp_fmt->flags, 0);
 738         else
 739                 fmt = inp_fmt;
 740
 741         if (WARN_ON(fmt == NULL))
 742                 return -EINVAL;
 743         if (ffmt)
 744                 *ffmt = fmt;
 745         v4l_bound_align_image(&pixm->width, 8, dd->max_width,
 746                               ffs(dd->out_width_align) - 1,
 747                               &pixm->height, 0, dd->max_height, 0, 0);
 748
 749         if ((bpl == 0 || ((bpl * 8) / fmt->depth[0]) < pixm->width))
 750                 pixm->plane_fmt[0].bytesperline = (pixm->width *
 751                                                    fmt->depth[0]) / 8;
 752
 753         if (pixm->plane_fmt[0].sizeimage == 0)
 754                 pixm->plane_fmt[0].sizeimage = (pixm->width * pixm->height *
 755                                                 fmt->depth[0]) / 8;
 756         pixm->num_planes = fmt->memplanes;
 757         pixm->pixelformat = fmt->fourcc;
 758         pixm->colorspace = fmt->colorspace;
 759         pixm->field = V4L2_FIELD_NONE;
 760         return 0;
 761 }
 762
 763 static int fimc_lite_try_fmt_mplane(struct file *file, void *fh,
 764                                     struct v4l2_format *f)
 765 {
 766         struct fimc_lite *fimc = video_drvdata(file);
 767         return fimc_lite_try_fmt(fimc, &f->fmt.pix_mp, NULL);
 768 }
 769
 770 static int fimc_lite_s_fmt_mplane(struct file *file, void *priv,
 771                                   struct v4l2_format *f)
 772 {
 773         struct v4l2_pix_format_mplane *pixm = &f->fmt.pix_mp;
 774         struct fimc_lite *fimc = video_drvdata(file);
 775         struct flite_frame *frame = &fimc->out_frame;
 776         const struct fimc_fmt *fmt = NULL;
 777         int ret;
 778
 779         if (vb2_is_busy(&fimc->vb_queue))
 780                 return -EBUSY;
 781
 782         ret = fimc_lite_try_fmt(fimc, &f->fmt.pix_mp, &fmt);
 783         if (ret < 0)
 784                 return ret;
 785
 786         frame->fmt = fmt;
 787         fimc->payload[0] = max((pixm->width * pixm->height * fmt->depth[0]) / 8,
 788                                pixm->plane_fmt[0].sizeimage);
 789         frame->f_width = pixm->width;
 790         frame->f_height = pixm->height;
 791
 792         return 0;
 793 }
 794
 795 static int fimc_pipeline_validate(struct fimc_lite *fimc)
 796 {
 797         struct v4l2_subdev *sd = &fimc->subdev;
 798         struct v4l2_subdev_format sink_fmt, src_fmt;
 799         struct media_pad *pad;
 800         int ret;
 801
 802         while (1) {
 803                 /* Retrieve format at the sink pad */
 804                 pad = &sd->entity.pads[0];
 805                 if (!(pad->flags & MEDIA_PAD_FL_SINK))
 806                         break;
 807                 /* Don't call FIMC subdev operation to avoid nested locking */
 808                 if (sd == &fimc->subdev) {
 809                         struct flite_frame *ff = &fimc->out_frame;
 810                         sink_fmt.format.width = ff->f_width;
 811                         sink_fmt.format.height = ff->f_height;
 812                         sink_fmt.format.code = fimc->inp_frame.fmt->mbus_code;
 813                 } else {
 814                         sink_fmt.pad = pad->index;
 815                         sink_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
 816                         ret = v4l2_subdev_call(sd, pad, get_fmt, NULL,
 817                                                &sink_fmt);
 818                         if (ret < 0 && ret != -ENOIOCTLCMD)
 819                                 return -EPIPE;
 820                 }
 821                 /* Retrieve format at the source pad */
 822                 pad = media_entity_remote_pad(pad);
 823                 if (pad == NULL ||
 824                     media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
 825                         break;
 826
 827                 sd = media_entity_to_v4l2_subdev(pad->entity);
 828                 src_fmt.pad = pad->index;
 829                 src_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
 830                 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &src_fmt);
 831                 if (ret < 0 && ret != -ENOIOCTLCMD)
 832                         return -EPIPE;
 833
 834                 if (src_fmt.format.width != sink_fmt.format.width ||
 835                     src_fmt.format.height != sink_fmt.format.height ||
 836                     src_fmt.format.code != sink_fmt.format.code)
 837                         return -EPIPE;
 838         }
 839         return 0;
 840 }
 841
 842 static int fimc_lite_streamon(struct file *file, void *priv,
 843                               enum v4l2_buf_type type)
 844 {
 845         struct fimc_lite *fimc = video_drvdata(file);
 846         struct media_entity *entity = &fimc->ve.vdev.entity;
 847         int ret;
 848
 849         if (fimc_lite_active(fimc))
 850                 return -EBUSY;
 851
 852         ret = media_entity_pipeline_start(entity, &fimc->ve.pipe->mp);
 853         if (ret < 0)
 854                 return ret;
 855
 856         ret = fimc_pipeline_validate(fimc);
 857         if (ret < 0)
 858                 goto err_p_stop;
 859
 860         fimc->sensor = fimc_find_remote_sensor(&fimc->subdev.entity);
 861
 862         ret = vb2_ioctl_streamon(file, priv, type);
 863         if (!ret) {
 864                 fimc->streaming = true;
 865                 return ret;
 866         }
 867
 868 err_p_stop:
 869         media_entity_pipeline_stop(entity);
 870         return 0;
 871 }
 872
 873 static int fimc_lite_streamoff(struct file *file, void *priv,
 874                                enum v4l2_buf_type type)
 875 {
 876         struct fimc_lite *fimc = video_drvdata(file);
 877         int ret;
 878
 879         ret = vb2_ioctl_streamoff(file, priv, type);
 880         if (ret < 0)
 881                 return ret;
 882
 883         media_entity_pipeline_stop(&fimc->ve.vdev.entity);
 884         fimc->streaming = false;
 885         return 0;
 886 }
 887
 888 static int fimc_lite_reqbufs(struct file *file, void *priv,
 889                              struct v4l2_requestbuffers *reqbufs)
 890 {
 891         struct fimc_lite *fimc = video_drvdata(file);
 892         int ret;
 893
 894         reqbufs->count = max_t(u32, FLITE_REQ_BUFS_MIN, reqbufs->count);
 895         ret = vb2_ioctl_reqbufs(file, priv, reqbufs);
 896         if (!ret)
 897                 fimc->reqbufs_count = reqbufs->count;
 898
 899         return ret;
 900 }
 901
 902 /* Return 1 if rectangle a is enclosed in rectangle b, or 0 otherwise. */
 903 static int enclosed_rectangle(struct v4l2_rect *a, struct v4l2_rect *b)
 904 {
 905         if (a->left < b->left || a->top < b->top)
 906                 return 0;
 907         if (a->left + a->width > b->left + b->width)
 908                 return 0;
 909         if (a->top + a->height > b->top + b->height)
 910                 return 0;
 911
 912         return 1;
 913 }
 914
 915 static int fimc_lite_g_selection(struct file *file, void *fh,
 916                                  struct v4l2_selection *sel)
 917 {
 918         struct fimc_lite *fimc = video_drvdata(file);
 919         struct flite_frame *f = &fimc->out_frame;
 920
 921         if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
 922                 return -EINVAL;
 923
 924         switch (sel->target) {
 925         case V4L2_SEL_TGT_COMPOSE_BOUNDS:
 926         case V4L2_SEL_TGT_COMPOSE_DEFAULT:
 927                 sel->r.left = 0;
 928                 sel->r.top = 0;
 929                 sel->r.width = f->f_width;
 930                 sel->r.height = f->f_height;
 931                 return 0;
 932
 933         case V4L2_SEL_TGT_COMPOSE:
 934                 sel->r = f->rect;
 935                 return 0;
 936         }
 937
 938         return -EINVAL;
 939 }
 940
 941 static int fimc_lite_s_selection(struct file *file, void *fh,
 942                                  struct v4l2_selection *sel)
 943 {
 944         struct fimc_lite *fimc = video_drvdata(file);
 945         struct flite_frame *f = &fimc->out_frame;
 946         struct v4l2_rect rect = sel->r;
 947         unsigned long flags;
 948
 949         if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE ||
 950             sel->target != V4L2_SEL_TGT_COMPOSE)
 951                 return -EINVAL;
 952
 953         fimc_lite_try_compose(fimc, &rect);
 954
 955         if ((sel->flags & V4L2_SEL_FLAG_LE) &&
 956             !enclosed_rectangle(&rect, &sel->r))
 957                 return -ERANGE;
 958
 959         if ((sel->flags & V4L2_SEL_FLAG_GE) &&
 960             !enclosed_rectangle(&sel->r, &rect))
 961                 return -ERANGE;
 962
 963         sel->r = rect;
 964         spin_lock_irqsave(&fimc->slock, flags);
 965         f->rect = rect;
 966         set_bit(ST_FLITE_CONFIG, &fimc->state);
 967         spin_unlock_irqrestore(&fimc->slock, flags);
 968
 969         return 0;
 970 }
 971
 972 static const struct v4l2_ioctl_ops fimc_lite_ioctl_ops = {
 973         .vidioc_querycap                = fimc_lite_querycap,
 974         .vidioc_enum_fmt_vid_cap_mplane = fimc_lite_enum_fmt_mplane,
 975         .vidioc_try_fmt_vid_cap_mplane  = fimc_lite_try_fmt_mplane,
 976         .vidioc_s_fmt_vid_cap_mplane    = fimc_lite_s_fmt_mplane,
 977         .vidioc_g_fmt_vid_cap_mplane    = fimc_lite_g_fmt_mplane,
 978         .vidioc_g_selection             = fimc_lite_g_selection,
 979         .vidioc_s_selection             = fimc_lite_s_selection,
 980         .vidioc_reqbufs                 = fimc_lite_reqbufs,
 981         .vidioc_querybuf                = vb2_ioctl_querybuf,
 982         .vidioc_prepare_buf             = vb2_ioctl_prepare_buf,
 983         .vidioc_create_bufs             = vb2_ioctl_create_bufs,
 984         .vidioc_qbuf                    = vb2_ioctl_qbuf,
 985         .vidioc_dqbuf                   = vb2_ioctl_dqbuf,
 986         .vidioc_streamon                = fimc_lite_streamon,
 987         .vidioc_streamoff               = fimc_lite_streamoff,
 988 };
 989
 990 /* Capture subdev media entity operations */
 991 static int fimc_lite_link_setup(struct media_entity *entity,
 992                                 const struct media_pad *local,
 993                                 const struct media_pad *remote, u32 flags)
 994 {
 995         struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
 996         struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
 997         unsigned int remote_ent_type = media_entity_type(remote->entity);
 998         int ret = 0;
 999
1000         if (WARN_ON(fimc == NULL))
1001                 return 0;
1002
1003         v4l2_dbg(1, debug, sd, "%s: %s --> %s, flags: 0x%x. source_id: 0x%x\n",
1004                  __func__, remote->entity->name, local->entity->name,
1005                  flags, fimc->source_subdev_grp_id);
1006
1007         switch (local->index) {
1008         case FLITE_SD_PAD_SINK:
1009                 if (remote_ent_type != MEDIA_ENT_T_V4L2_SUBDEV) {
1010                         ret = -EINVAL;
1011                         break;
1012                 }
1013                 if (flags & MEDIA_LNK_FL_ENABLED) {
1014                         if (fimc->source_subdev_grp_id == 0)
1015                                 fimc->source_subdev_grp_id = sd->grp_id;
1016                         else
1017                                 ret = -EBUSY;
1018                 } else {
1019                         fimc->source_subdev_grp_id = 0;
1020                         fimc->sensor = NULL;
1021                 }
1022                 break;
1023
1024         case FLITE_SD_PAD_SOURCE_DMA:
1025                 if (!(flags & MEDIA_LNK_FL_ENABLED))
1026                         atomic_set(&fimc->out_path, FIMC_IO_NONE);
1027                 else if (remote_ent_type == MEDIA_ENT_T_DEVNODE)
1028                         atomic_set(&fimc->out_path, FIMC_IO_DMA);
1029                 else
1030                         ret = -EINVAL;
1031                 break;
1032
1033         case FLITE_SD_PAD_SOURCE_ISP:
1034                 if (!(flags & MEDIA_LNK_FL_ENABLED))
1035                         atomic_set(&fimc->out_path, FIMC_IO_NONE);
1036                 else if (remote_ent_type == MEDIA_ENT_T_V4L2_SUBDEV)
1037                         atomic_set(&fimc->out_path, FIMC_IO_ISP);
1038                 else
1039                         ret = -EINVAL;
1040                 break;
1041
1042         default:
1043                 v4l2_err(sd, "Invalid pad index\n");
1044                 ret = -EINVAL;
1045         }
1046         mb();
1047
1048         return ret;
1049 }
1050
1051 static const struct media_entity_operations fimc_lite_subdev_media_ops = {
1052         .link_setup = fimc_lite_link_setup,
1053 };
1054
1055 static int fimc_lite_subdev_enum_mbus_code(struct v4l2_subdev *sd,
1056                                            struct v4l2_subdev_fh *fh,
1057                                            struct v4l2_subdev_mbus_code_enum *code)
1058 {
1059         const struct fimc_fmt *fmt;
1060
1061         fmt = fimc_lite_find_format(NULL, NULL, 0, code->index);
1062         if (!fmt)
1063                 return -EINVAL;
1064         code->code = fmt->mbus_code;
1065         return 0;
1066 }
1067
1068 static struct v4l2_mbus_framefmt *__fimc_lite_subdev_get_try_fmt(
1069                         struct v4l2_subdev_fh *fh, unsigned int pad)
1070 {
1071         if (pad != FLITE_SD_PAD_SINK)
1072                 pad = FLITE_SD_PAD_SOURCE_DMA;
1073
1074         return v4l2_subdev_get_try_format(fh, pad);
1075 }
1076
1077 static int fimc_lite_subdev_get_fmt(struct v4l2_subdev *sd,
1078                                     struct v4l2_subdev_fh *fh,
1079                                     struct v4l2_subdev_format *fmt)
1080 {
1081         struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1082         struct v4l2_mbus_framefmt *mf = &fmt->format;
1083         struct flite_frame *f = &fimc->inp_frame;
1084
1085         if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1086                 mf = __fimc_lite_subdev_get_try_fmt(fh, fmt->pad);
1087                 fmt->format = *mf;
1088                 return 0;
1089         }
1090
1091         mutex_lock(&fimc->lock);
1092         mf->colorspace = f->fmt->colorspace;
1093         mf->code = f->fmt->mbus_code;
1094
1095         if (fmt->pad == FLITE_SD_PAD_SINK) {
1096                 /* full camera input frame size */
1097                 mf->width = f->f_width;
1098                 mf->height = f->f_height;
1099         } else {
1100                 /* crop size */
1101                 mf->width = f->rect.width;
1102                 mf->height = f->rect.height;
1103         }
1104         mutex_unlock(&fimc->lock);
1105         return 0;
1106 }
1107
1108 static int fimc_lite_subdev_set_fmt(struct v4l2_subdev *sd,
1109                                     struct v4l2_subdev_fh *fh,
1110                                     struct v4l2_subdev_format *fmt)
1111 {
1112         struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1113         struct v4l2_mbus_framefmt *mf = &fmt->format;
1114         struct flite_frame *sink = &fimc->inp_frame;
1115         struct flite_frame *source = &fimc->out_frame;
1116         const struct fimc_fmt *ffmt;
1117
1118         v4l2_dbg(1, debug, sd, "pad%d: code: 0x%x, %dx%d\n",
1119                  fmt->pad, mf->code, mf->width, mf->height);
1120
1121         mutex_lock(&fimc->lock);
1122
1123         if ((atomic_read(&fimc->out_path) == FIMC_IO_ISP &&
1124             sd->entity.stream_count > 0) ||
1125             (atomic_read(&fimc->out_path) == FIMC_IO_DMA &&
1126             vb2_is_busy(&fimc->vb_queue))) {
1127                 mutex_unlock(&fimc->lock);
1128                 return -EBUSY;
1129         }
1130
1131         ffmt = fimc_lite_subdev_try_fmt(fimc, fh, fmt);
1132
1133         if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1134                 struct v4l2_mbus_framefmt *src_fmt;
1135
1136                 mf = __fimc_lite_subdev_get_try_fmt(fh, fmt->pad);
1137                 *mf = fmt->format;
1138
1139                 if (fmt->pad == FLITE_SD_PAD_SINK) {
1140                         unsigned int pad = FLITE_SD_PAD_SOURCE_DMA;
1141                         src_fmt = __fimc_lite_subdev_get_try_fmt(fh, pad);
1142                         *src_fmt = *mf;
1143                 }
1144
1145                 mutex_unlock(&fimc->lock);
1146                 return 0;
1147         }
1148
1149         if (fmt->pad == FLITE_SD_PAD_SINK) {
1150                 sink->f_width = mf->width;
1151                 sink->f_height = mf->height;
1152                 sink->fmt = ffmt;
1153                 /* Set sink crop rectangle */
1154                 sink->rect.width = mf->width;
1155                 sink->rect.height = mf->height;
1156                 sink->rect.left = 0;
1157                 sink->rect.top = 0;
1158                 /* Reset source format and crop rectangle */
1159                 source->rect = sink->rect;
1160                 source->f_width = mf->width;
1161                 source->f_height = mf->height;
1162         }
1163
1164         mutex_unlock(&fimc->lock);
1165         return 0;
1166 }
1167
1168 static int fimc_lite_subdev_get_selection(struct v4l2_subdev *sd,
1169                                           struct v4l2_subdev_fh *fh,
1170                                           struct v4l2_subdev_selection *sel)
1171 {
1172         struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1173         struct flite_frame *f = &fimc->inp_frame;
1174
1175         if ((sel->target != V4L2_SEL_TGT_CROP &&
1176              sel->target != V4L2_SEL_TGT_CROP_BOUNDS) ||
1177              sel->pad != FLITE_SD_PAD_SINK)
1178                 return -EINVAL;
1179
1180         if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1181                 sel->r = *v4l2_subdev_get_try_crop(fh, sel->pad);
1182                 return 0;
1183         }
1184
1185         mutex_lock(&fimc->lock);
1186         if (sel->target == V4L2_SEL_TGT_CROP) {
1187                 sel->r = f->rect;
1188         } else {
1189                 sel->r.left = 0;
1190                 sel->r.top = 0;
1191                 sel->r.width = f->f_width;
1192                 sel->r.height = f->f_height;
1193         }
1194         mutex_unlock(&fimc->lock);
1195
1196         v4l2_dbg(1, debug, sd, "%s: (%d,%d) %dx%d, f_w: %d, f_h: %d\n",
1197                  __func__, f->rect.left, f->rect.top, f->rect.width,
1198                  f->rect.height, f->f_width, f->f_height);
1199
1200         return 0;
1201 }
1202
1203 static int fimc_lite_subdev_set_selection(struct v4l2_subdev *sd,
1204                                           struct v4l2_subdev_fh *fh,
1205                                           struct v4l2_subdev_selection *sel)
1206 {
1207         struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1208         struct flite_frame *f = &fimc->inp_frame;
1209         int ret = 0;
1210
1211         if (sel->target != V4L2_SEL_TGT_CROP || sel->pad != FLITE_SD_PAD_SINK)
1212                 return -EINVAL;
1213
1214         mutex_lock(&fimc->lock);
1215         fimc_lite_try_crop(fimc, &sel->r);
1216
1217         if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1218                 *v4l2_subdev_get_try_crop(fh, sel->pad) = sel->r;
1219         } else {
1220                 unsigned long flags;
1221                 spin_lock_irqsave(&fimc->slock, flags);
1222                 f->rect = sel->r;
1223                 /* Same crop rectangle on the source pad */
1224                 fimc->out_frame.rect = sel->r;
1225                 set_bit(ST_FLITE_CONFIG, &fimc->state);
1226                 spin_unlock_irqrestore(&fimc->slock, flags);
1227         }
1228         mutex_unlock(&fimc->lock);
1229
1230         v4l2_dbg(1, debug, sd, "%s: (%d,%d) %dx%d, f_w: %d, f_h: %d\n",
1231                  __func__, f->rect.left, f->rect.top, f->rect.width,
1232                  f->rect.height, f->f_width, f->f_height);
1233
1234         return ret;
1235 }
1236
1237 static int fimc_lite_subdev_s_stream(struct v4l2_subdev *sd, int on)
1238 {
1239         struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1240         unsigned long flags;
1241         int ret;
1242
1243         /*
1244          * Find sensor subdev linked to FIMC-LITE directly or through
1245          * MIPI-CSIS. This is required for configuration where FIMC-LITE
1246          * is used as a subdev only and feeds data internally to FIMC-IS.
1247          * The pipeline links are protected through entity.stream_count
1248          * so there is no need to take the media graph mutex here.
1249          */
1250         fimc->sensor = fimc_find_remote_sensor(&sd->entity);
1251
1252         if (atomic_read(&fimc->out_path) != FIMC_IO_ISP)
1253                 return -ENOIOCTLCMD;
1254
1255         mutex_lock(&fimc->lock);
1256         if (on) {
1257                 flite_hw_reset(fimc);
1258                 ret = fimc_lite_hw_init(fimc, true);
1259                 if (!ret) {
1260                         spin_lock_irqsave(&fimc->slock, flags);
1261                         flite_hw_capture_start(fimc);
1262                         spin_unlock_irqrestore(&fimc->slock, flags);
1263                 }
1264         } else {
1265                 set_bit(ST_FLITE_OFF, &fimc->state);
1266
1267                 spin_lock_irqsave(&fimc->slock, flags);
1268                 /* Make sure both output DMA and local FIFO are disabled */
1269                 flite_hw_set_output_path(fimc, false, false);
1270                 flite_hw_set_dma_buf_mask(fimc, 0);
1271                 flite_hw_capture_stop(fimc);
1272                 spin_unlock_irqrestore(&fimc->slock, flags);
1273
1274                 ret = wait_event_timeout(fimc->irq_queue,
1275                                 !test_bit(ST_FLITE_OFF, &fimc->state),
1276                                 msecs_to_jiffies(200));
1277                 if (ret == 0)
1278                         v4l2_err(sd, "s_stream(0) timeout\n");
1279                 clear_bit(ST_FLITE_RUN, &fimc->state);
1280                 flite_hw_clear_interrupt_mask(fimc);
1281         }
1282
1283         mutex_unlock(&fimc->lock);
1284         return ret;
1285 }
1286
1287 static int fimc_lite_log_status(struct v4l2_subdev *sd)
1288 {
1289         struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1290
1291         flite_hw_dump_regs(fimc, __func__);
1292         return 0;
1293 }
1294
1295 static int fimc_lite_subdev_registered(struct v4l2_subdev *sd)
1296 {
1297         struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1298         struct vb2_queue *q = &fimc->vb_queue;
1299         struct video_device *vfd = &fimc->ve.vdev;
1300         int ret;
1301
1302         memset(vfd, 0, sizeof(*vfd));
1303         atomic_set(&fimc->out_path, FIMC_IO_DMA);
1304
1305         snprintf(vfd->name, sizeof(vfd->name), "fimc-lite.%d.capture",
1306                  fimc->index);
1307
1308         vfd->fops = &fimc_lite_fops;
1309         vfd->ioctl_ops = &fimc_lite_ioctl_ops;
1310         vfd->v4l2_dev = sd->v4l2_dev;
1311         vfd->minor = -1;
1312         vfd->release = video_device_release_empty;
1313         vfd->queue = q;
1314         fimc->reqbufs_count = 0;
1315
1316         INIT_LIST_HEAD(&fimc->pending_buf_q);
1317         INIT_LIST_HEAD(&fimc->active_buf_q);
1318
1319         memset(q, 0, sizeof(*q));
1320         q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1321         q->io_modes = VB2_MMAP | VB2_USERPTR;
1322         q->ops = &fimc_lite_qops;
1323         q->mem_ops = &vb2_dma_contig_memops;
1324         q->buf_struct_size = sizeof(struct flite_buffer);
1325         q->drv_priv = fimc;
1326         q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1327         q->lock = &fimc->lock;
1328
1329         ret = vb2_queue_init(q);
1330         if (ret < 0)
1331                 return ret;
1332
1333         fimc->vd_pad.flags = MEDIA_PAD_FL_SINK;
1334         ret = media_entity_init(&vfd->entity, 1, &fimc->vd_pad, 0);
1335         if (ret < 0)
1336                 return ret;
1337
1338         video_set_drvdata(vfd, fimc);
1339         fimc->ve.pipe = v4l2_get_subdev_hostdata(sd);
1340
1341         ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1);
1342         if (ret < 0) {
1343                 media_entity_cleanup(&vfd->entity);
1344                 fimc->ve.pipe = NULL;
1345                 return ret;
1346         }
1347
1348         v4l2_info(sd->v4l2_dev, "Registered %s as /dev/%s\n",
1349                   vfd->name, video_device_node_name(vfd));
1350         return 0;
1351 }
1352
1353 static void fimc_lite_subdev_unregistered(struct v4l2_subdev *sd)
1354 {
1355         struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1356
1357         if (fimc == NULL)
1358                 return;
1359
1360         mutex_lock(&fimc->lock);
1361
1362         if (video_is_registered(&fimc->ve.vdev)) {
1363                 video_unregister_device(&fimc->ve.vdev);
1364                 media_entity_cleanup(&fimc->ve.vdev.entity);
1365                 fimc->ve.pipe = NULL;
1366         }
1367
1368         mutex_unlock(&fimc->lock);
1369 }
1370
1371 static const struct v4l2_subdev_internal_ops fimc_lite_subdev_internal_ops = {
1372         .registered = fimc_lite_subdev_registered,
1373         .unregistered = fimc_lite_subdev_unregistered,
1374 };
1375
1376 static const struct v4l2_subdev_pad_ops fimc_lite_subdev_pad_ops = {
1377         .enum_mbus_code = fimc_lite_subdev_enum_mbus_code,
1378         .get_selection = fimc_lite_subdev_get_selection,
1379         .set_selection = fimc_lite_subdev_set_selection,
1380         .get_fmt = fimc_lite_subdev_get_fmt,
1381         .set_fmt = fimc_lite_subdev_set_fmt,
1382 };
1383
1384 static const struct v4l2_subdev_video_ops fimc_lite_subdev_video_ops = {
1385         .s_stream = fimc_lite_subdev_s_stream,
1386 };
1387
1388 static const struct v4l2_subdev_core_ops fimc_lite_core_ops = {
1389         .log_status = fimc_lite_log_status,
1390 };
1391
1392 static struct v4l2_subdev_ops fimc_lite_subdev_ops = {
1393         .core = &fimc_lite_core_ops,
1394         .video = &fimc_lite_subdev_video_ops,
1395         .pad = &fimc_lite_subdev_pad_ops,
1396 };
1397
1398 static int fimc_lite_s_ctrl(struct v4l2_ctrl *ctrl)
1399 {
1400         struct fimc_lite *fimc = container_of(ctrl->handler, struct fimc_lite,
1401                                               ctrl_handler);
1402         set_bit(ST_FLITE_CONFIG, &fimc->state);
1403         return 0;
1404 }
1405
1406 static const struct v4l2_ctrl_ops fimc_lite_ctrl_ops = {
1407         .s_ctrl = fimc_lite_s_ctrl,
1408 };
1409
1410 static const struct v4l2_ctrl_config fimc_lite_ctrl = {
1411         .ops    = &fimc_lite_ctrl_ops,
1412         .id     = V4L2_CTRL_CLASS_USER | 0x1001,
1413         .type   = V4L2_CTRL_TYPE_BOOLEAN,
1414         .name   = "Test Pattern 640x480",
1415         .step   = 1,
1416 };
1417
1418 static void fimc_lite_set_default_config(struct fimc_lite *fimc)
1419 {
1420         struct flite_frame *sink = &fimc->inp_frame;
1421         struct flite_frame *source = &fimc->out_frame;
1422
1423         sink->fmt = &fimc_lite_formats[0];
1424         sink->f_width = FLITE_DEFAULT_WIDTH;
1425         sink->f_height = FLITE_DEFAULT_HEIGHT;
1426
1427         sink->rect.width = FLITE_DEFAULT_WIDTH;
1428         sink->rect.height = FLITE_DEFAULT_HEIGHT;
1429         sink->rect.left = 0;
1430         sink->rect.top = 0;
1431
1432         *source = *sink;
1433 }
1434
1435 static int fimc_lite_create_capture_subdev(struct fimc_lite *fimc)
1436 {
1437         struct v4l2_ctrl_handler *handler = &fimc->ctrl_handler;
1438         struct v4l2_subdev *sd = &fimc->subdev;
1439         int ret;
1440
1441         v4l2_subdev_init(sd, &fimc_lite_subdev_ops);
1442         sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1443         snprintf(sd->name, sizeof(sd->name), "FIMC-LITE.%d", fimc->index);
1444
1445         fimc->subdev_pads[FLITE_SD_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
1446         fimc->subdev_pads[FLITE_SD_PAD_SOURCE_DMA].flags = MEDIA_PAD_FL_SOURCE;
1447         fimc->subdev_pads[FLITE_SD_PAD_SOURCE_ISP].flags = MEDIA_PAD_FL_SOURCE;
1448         ret = media_entity_init(&sd->entity, FLITE_SD_PADS_NUM,
1449                                 fimc->subdev_pads, 0);
1450         if (ret)
1451                 return ret;
1452
1453         v4l2_ctrl_handler_init(handler, 1);
1454         fimc->test_pattern = v4l2_ctrl_new_custom(handler, &fimc_lite_ctrl,
1455                                                   NULL);
1456         if (handler->error) {
1457                 media_entity_cleanup(&sd->entity);
1458                 return handler->error;
1459         }
1460
1461         sd->ctrl_handler = handler;
1462         sd->internal_ops = &fimc_lite_subdev_internal_ops;
1463         sd->entity.ops = &fimc_lite_subdev_media_ops;
1464         sd->owner = THIS_MODULE;
1465         v4l2_set_subdevdata(sd, fimc);
1466
1467         return 0;
1468 }
1469
1470 static void fimc_lite_unregister_capture_subdev(struct fimc_lite *fimc)
1471 {
1472         struct v4l2_subdev *sd = &fimc->subdev;
1473
1474         v4l2_device_unregister_subdev(sd);
1475         media_entity_cleanup(&sd->entity);
1476         v4l2_ctrl_handler_free(&fimc->ctrl_handler);
1477         v4l2_set_subdevdata(sd, NULL);
1478 }
1479
1480 static void fimc_lite_clk_put(struct fimc_lite *fimc)
1481 {
1482         if (IS_ERR(fimc->clock))
1483                 return;
1484
1485         clk_unprepare(fimc->clock);
1486         clk_put(fimc->clock);
1487         fimc->clock = ERR_PTR(-EINVAL);
1488 }
1489
1490 static int fimc_lite_clk_get(struct fimc_lite *fimc)
1491 {
1492         int ret;
1493
1494         fimc->clock = clk_get(&fimc->pdev->dev, FLITE_CLK_NAME);
1495         if (IS_ERR(fimc->clock))
1496                 return PTR_ERR(fimc->clock);
1497
1498         ret = clk_prepare(fimc->clock);
1499         if (ret < 0) {
1500                 clk_put(fimc->clock);
1501                 fimc->clock = ERR_PTR(-EINVAL);
1502         }
1503         return ret;
1504 }
1505
1506 static const struct of_device_id flite_of_match[];
1507
1508 static int fimc_lite_probe(struct platform_device *pdev)
1509 {
1510         struct flite_drvdata *drv_data = NULL;
1511         struct device *dev = &pdev->dev;
1512         const struct of_device_id *of_id;
1513         struct fimc_lite *fimc;
1514         struct resource *res;
1515         int ret;
1516
1517         if (!dev->of_node)
1518                 return -ENODEV;
1519
1520         fimc = devm_kzalloc(dev, sizeof(*fimc), GFP_KERNEL);
1521         if (!fimc)
1522                 return -ENOMEM;
1523
1524         of_id = of_match_node(flite_of_match, dev->of_node);
1525         if (of_id)
1526                 drv_data = (struct flite_drvdata *)of_id->data;
1527         fimc->index = of_alias_get_id(dev->of_node, "fimc-lite");
1528
1529         if (!drv_data || fimc->index >= drv_data->num_instances ||
1530                                                 fimc->index < 0) {
1531                 dev_err(dev, "Wrong %s node alias\n",
1532                                         dev->of_node->full_name);
1533                 return -EINVAL;
1534         }
1535
1536         fimc->dd = drv_data;
1537         fimc->pdev = pdev;
1538
1539         init_waitqueue_head(&fimc->irq_queue);
1540         spin_lock_init(&fimc->slock);
1541         mutex_init(&fimc->lock);
1542
1543         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1544         fimc->regs = devm_ioremap_resource(dev, res);
1545         if (IS_ERR(fimc->regs))
1546                 return PTR_ERR(fimc->regs);
1547
1548         res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1549         if (res == NULL) {
1550                 dev_err(dev, "Failed to get IRQ resource\n");
1551                 return -ENXIO;
1552         }
1553
1554         ret = fimc_lite_clk_get(fimc);
1555         if (ret)
1556                 return ret;
1557
1558         ret = devm_request_irq(dev, res->start, flite_irq_handler,
1559                                0, dev_name(dev), fimc);
1560         if (ret) {
1561                 dev_err(dev, "Failed to install irq (%d)\n", ret);
1562                 goto err_clk;
1563         }
1564
1565         /* The video node will be created within the subdev's registered() op */
1566         ret = fimc_lite_create_capture_subdev(fimc);
1567         if (ret)
1568                 goto err_clk;
1569
1570         platform_set_drvdata(pdev, fimc);
1571
1572         fimc->alloc_ctx = vb2_dma_contig_init_ctx(dev);
1573         if (IS_ERR(fimc->alloc_ctx)) {
1574                 ret = PTR_ERR(fimc->alloc_ctx);
1575                 goto err_sd;
1576         }
1577
1578         fimc_lite_set_default_config(fimc);
1579
1580         pm_runtime_enable(dev);
1581
1582         dev_dbg(dev, "FIMC-LITE.%d registered successfully\n",
1583                 fimc->index);
1584         return 0;
1585
1586 err_sd:
1587         fimc_lite_unregister_capture_subdev(fimc);
1588 err_clk:
1589         fimc_lite_clk_put(fimc);
1590         return ret;
1591 }
1592
1593 static int fimc_lite_runtime_resume(struct device *dev)
1594 {
1595         struct fimc_lite *fimc = dev_get_drvdata(dev);
1596
1597         clk_enable(fimc->clock);
1598         return 0;
1599 }
1600
1601 static int fimc_lite_runtime_suspend(struct device *dev)
1602 {
1603         struct fimc_lite *fimc = dev_get_drvdata(dev);
1604
1605         clk_disable(fimc->clock);
1606         return 0;
1607 }
1608
1609 #ifdef CONFIG_PM_SLEEP
1610 static int fimc_lite_resume(struct device *dev)
1611 {
1612         struct fimc_lite *fimc = dev_get_drvdata(dev);
1613         struct flite_buffer *buf;
1614         unsigned long flags;
1615         int i;
1616
1617         spin_lock_irqsave(&fimc->slock, flags);
1618         if (!test_and_clear_bit(ST_LPM, &fimc->state) ||
1619             !test_bit(ST_FLITE_IN_USE, &fimc->state)) {
1620                 spin_unlock_irqrestore(&fimc->slock, flags);
1621                 return 0;
1622         }
1623         flite_hw_reset(fimc);
1624         spin_unlock_irqrestore(&fimc->slock, flags);
1625
1626         if (!test_and_clear_bit(ST_FLITE_SUSPENDED, &fimc->state))
1627                 return 0;
1628
1629         INIT_LIST_HEAD(&fimc->active_buf_q);
1630         fimc_pipeline_call(&fimc->ve, open,
1631                            &fimc->ve.vdev.entity, false);
1632         fimc_lite_hw_init(fimc, atomic_read(&fimc->out_path) == FIMC_IO_ISP);
1633         clear_bit(ST_FLITE_SUSPENDED, &fimc->state);
1634
1635         for (i = 0; i < fimc->reqbufs_count; i++) {
1636                 if (list_empty(&fimc->pending_buf_q))
1637                         break;
1638                 buf = fimc_lite_pending_queue_pop(fimc);
1639                 buffer_queue(&buf->vb);
1640         }
1641         return 0;
1642 }
1643
1644 static int fimc_lite_suspend(struct device *dev)
1645 {
1646         struct fimc_lite *fimc = dev_get_drvdata(dev);
1647         bool suspend = test_bit(ST_FLITE_IN_USE, &fimc->state);
1648         int ret;
1649
1650         if (test_and_set_bit(ST_LPM, &fimc->state))
1651                 return 0;
1652
1653         ret = fimc_lite_stop_capture(fimc, suspend);
1654         if (ret < 0 || !fimc_lite_active(fimc))
1655                 return ret;
1656
1657         return fimc_pipeline_call(&fimc->ve, close);
1658 }
1659 #endif /* CONFIG_PM_SLEEP */
1660
1661 static int fimc_lite_remove(struct platform_device *pdev)
1662 {
1663         struct fimc_lite *fimc = platform_get_drvdata(pdev);
1664         struct device *dev = &pdev->dev;
1665
1666         pm_runtime_disable(dev);
1667         pm_runtime_set_suspended(dev);
1668         fimc_lite_unregister_capture_subdev(fimc);
1669         vb2_dma_contig_cleanup_ctx(fimc->alloc_ctx);
1670         fimc_lite_clk_put(fimc);
1671
1672         dev_info(dev, "Driver unloaded\n");
1673         return 0;
1674 }
1675
1676 static const struct dev_pm_ops fimc_lite_pm_ops = {
1677         SET_SYSTEM_SLEEP_PM_OPS(fimc_lite_suspend, fimc_lite_resume)
1678         SET_RUNTIME_PM_OPS(fimc_lite_runtime_suspend, fimc_lite_runtime_resume,
1679                            NULL)
1680 };
1681
1682 /* EXYNOS3250 */
1683 static struct flite_drvdata fimc_lite_drvdata_exynos3250 = {
1684         .max_width              = 8192,
1685         .max_height             = 8192,
1686         .out_width_align        = 8,
1687         .win_hor_offs_align     = 2,
1688         .out_hor_offs_align     = 8,
1689         .max_dma_bufs           = 32,
1690         .num_instances          = 2,
1691         .has_out_local_enable   = 1,
1692 };
1693
1694 /* EXYNOS4212, EXYNOS4412 */
1695 static struct flite_drvdata fimc_lite_drvdata_exynos4 = {
1696         .max_width              = 8192,
1697         .max_height             = 8192,
1698         .out_width_align        = 8,
1699         .win_hor_offs_align     = 2,
1700         .out_hor_offs_align     = 8,
1701         .max_dma_bufs           = 1,
1702         .num_instances          = 2,
1703 };
1704
1705 /* EXYNOS5250 */
1706 static struct flite_drvdata fimc_lite_drvdata_exynos5 = {
1707         .max_width              = 8192,
1708         .max_height             = 8192,
1709         .out_width_align        = 8,
1710         .win_hor_offs_align     = 2,
1711         .out_hor_offs_align     = 8,
1712         .max_dma_bufs           = 32,
1713         .num_instances          = 3,
1714         .has_out_local_enable   = 1,
1715 };
1716
1717 static const struct of_device_id flite_of_match[] = {
1718         {
1719                 .compatible = "samsung,exynos3250-fimc-lite",
1720                 .data = &fimc_lite_drvdata_exynos3250,
1721         }, {
1722                 .compatible = "samsung,exynos4212-fimc-lite",
1723                 .data = &fimc_lite_drvdata_exynos4,
1724         }, {
1725                 .compatible = "samsung,exynos5250-fimc-lite",
1726                 .data = &fimc_lite_drvdata_exynos5,
1727         },
1728         { /* sentinel */ },
1729 };
1730 MODULE_DEVICE_TABLE(of, flite_of_match);
1731
1732 static struct platform_driver fimc_lite_driver = {
1733         .probe          = fimc_lite_probe,
1734         .remove         = fimc_lite_remove,
1735         .driver = {
1736                 .of_match_table = flite_of_match,
1737                 .name           = FIMC_LITE_DRV_NAME,
1738                 .owner          = THIS_MODULE,
1739                 .pm             = &fimc_lite_pm_ops,
1740         }
1741 };
1742 module_platform_driver(fimc_lite_driver);
1743 MODULE_LICENSE("GPL");
1744 MODULE_ALIAS("platform:" FIMC_LITE_DRV_NAME);