drivers/staging/media/imx/imx-ic-prpencvf.c

   1 /*
   2  * V4L2 Capture IC Preprocess Subdev for Freescale i.MX5/6 SOC
   3  *
   4  * This subdevice handles capture of video frames from the CSI or VDIC,
   5  * which are routed directly to the Image Converter preprocess tasks,
   6  * for resizing, colorspace conversion, and rotation.
   7  *
   8  * Copyright (c) 2012-2017 Mentor Graphics Inc.
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  */
  15 #include <linux/delay.h>
  16 #include <linux/interrupt.h>
  17 #include <linux/module.h>
  18 #include <linux/sched.h>
  19 #include <linux/slab.h>
  20 #include <linux/spinlock.h>
  21 #include <linux/timer.h>
  22 #include <media/v4l2-ctrls.h>
  23 #include <media/v4l2-device.h>
  24 #include <media/v4l2-ioctl.h>
  25 #include <media/v4l2-mc.h>
  26 #include <media/v4l2-subdev.h>
  27 #include <media/imx.h>
  28 #include "imx-media.h"
  29 #include "imx-ic.h"
  30
  31 /*
  32  * Min/Max supported width and heights.
  33  *
  34  * We allow planar output, so we have to align width at the source pad
  35  * by 16 pixels to meet IDMAC alignment requirements for possible planar
  36  * output.
  37  *
  38  * TODO: move this into pad format negotiation, if capture device
  39  * has not requested a planar format, we should allow 8 pixel
  40  * alignment at the source pad.
  41  */
  42 #define MIN_W_SINK  176
  43 #define MIN_H_SINK  144
  44 #define MAX_W_SINK 4096
  45 #define MAX_H_SINK 4096
  46 #define W_ALIGN_SINK  3 /* multiple of 8 pixels */
  47 #define H_ALIGN_SINK  1 /* multiple of 2 lines */
  48
  49 #define MAX_W_SRC  1024
  50 #define MAX_H_SRC  1024
  51 #define W_ALIGN_SRC   4 /* multiple of 16 pixels */
  52 #define H_ALIGN_SRC   1 /* multiple of 2 lines */
  53
  54 #define S_ALIGN       1 /* multiple of 2 */
  55
  56 struct prp_priv {
  57         struct imx_media_dev *md;
  58         struct imx_ic_priv *ic_priv;
  59         struct media_pad pad[PRPENCVF_NUM_PADS];
  60         /* the video device at output pad */
  61         struct imx_media_video_dev *vdev;
  62
  63         /* lock to protect all members below */
  64         struct mutex lock;
  65
  66         /* IPU units we require */
  67         struct ipu_soc *ipu;
  68         struct ipu_ic *ic;
  69         struct ipuv3_channel *out_ch;
  70         struct ipuv3_channel *rot_in_ch;
  71         struct ipuv3_channel *rot_out_ch;
  72
  73         /* active vb2 buffers to send to video dev sink */
  74         struct imx_media_buffer *active_vb2_buf[2];
  75         struct imx_media_dma_buf underrun_buf;
  76
  77         int ipu_buf_num;  /* ipu double buffer index: 0-1 */
  78
  79         /* the sink for the captured frames */
  80         struct media_entity *sink;
  81         /* the source subdev */
  82         struct v4l2_subdev *src_sd;
  83
  84         struct v4l2_mbus_framefmt format_mbus[PRPENCVF_NUM_PADS];
  85         const struct imx_media_pixfmt *cc[PRPENCVF_NUM_PADS];
  86         struct v4l2_fract frame_interval;
  87
  88         struct imx_media_dma_buf rot_buf[2];
  89
  90         /* controls */
  91         struct v4l2_ctrl_handler ctrl_hdlr;
  92         int  rotation; /* degrees */
  93         bool hflip;
  94         bool vflip;
  95
  96         /* derived from rotation, hflip, vflip controls */
  97         enum ipu_rotate_mode rot_mode;
  98
  99         spinlock_t irqlock; /* protect eof_irq handler */
 100
 101         struct timer_list eof_timeout_timer;
 102         int eof_irq;
 103         int nfb4eof_irq;
 104
 105         int stream_count;
 106         u32 frame_sequence; /* frame sequence counter */
 107         bool last_eof;  /* waiting for last EOF at stream off */
 108         bool nfb4eof;    /* NFB4EOF encountered during streaming */
 109         struct completion last_eof_comp;
 110 };
 111
 112 static const struct prp_channels {
 113         u32 out_ch;
 114         u32 rot_in_ch;
 115         u32 rot_out_ch;
 116 } prp_channel[] = {
 117         [IC_TASK_ENCODER] = {
 118                 .out_ch = IPUV3_CHANNEL_IC_PRP_ENC_MEM,
 119                 .rot_in_ch = IPUV3_CHANNEL_MEM_ROT_ENC,
 120                 .rot_out_ch = IPUV3_CHANNEL_ROT_ENC_MEM,
 121         },
 122         [IC_TASK_VIEWFINDER] = {
 123                 .out_ch = IPUV3_CHANNEL_IC_PRP_VF_MEM,
 124                 .rot_in_ch = IPUV3_CHANNEL_MEM_ROT_VF,
 125                 .rot_out_ch = IPUV3_CHANNEL_ROT_VF_MEM,
 126         },
 127 };
 128
 129 static inline struct prp_priv *sd_to_priv(struct v4l2_subdev *sd)
 130 {
 131         struct imx_ic_priv *ic_priv = v4l2_get_subdevdata(sd);
 132
 133         return ic_priv->task_priv;
 134 }
 135
 136 static void prp_put_ipu_resources(struct prp_priv *priv)
 137 {
 138         if (priv->ic)
 139                 ipu_ic_put(priv->ic);
 140         priv->ic = NULL;
 141
 142         if (priv->out_ch)
 143                 ipu_idmac_put(priv->out_ch);
 144         priv->out_ch = NULL;
 145
 146         if (priv->rot_in_ch)
 147                 ipu_idmac_put(priv->rot_in_ch);
 148         priv->rot_in_ch = NULL;
 149
 150         if (priv->rot_out_ch)
 151                 ipu_idmac_put(priv->rot_out_ch);
 152         priv->rot_out_ch = NULL;
 153 }
 154
 155 static int prp_get_ipu_resources(struct prp_priv *priv)
 156 {
 157         struct imx_ic_priv *ic_priv = priv->ic_priv;
 158         struct ipu_ic *ic;
 159         struct ipuv3_channel *out_ch, *rot_in_ch, *rot_out_ch;
 160         int ret, task = ic_priv->task_id;
 161
 162         priv->ipu = priv->md->ipu[ic_priv->ipu_id];
 163
 164         ic = ipu_ic_get(priv->ipu, task);
 165         if (IS_ERR(ic)) {
 166                 v4l2_err(&ic_priv->sd, "failed to get IC\n");
 167                 ret = PTR_ERR(ic);
 168                 goto out;
 169         }
 170         priv->ic = ic;
 171
 172         out_ch = ipu_idmac_get(priv->ipu, prp_channel[task].out_ch);
 173         if (IS_ERR(out_ch)) {
 174                 v4l2_err(&ic_priv->sd, "could not get IDMAC channel %u\n",
 175                          prp_channel[task].out_ch);
 176                 ret = PTR_ERR(out_ch);
 177                 goto out;
 178         }
 179         priv->out_ch = out_ch;
 180
 181         rot_in_ch = ipu_idmac_get(priv->ipu, prp_channel[task].rot_in_ch);
 182         if (IS_ERR(rot_in_ch)) {
 183                 v4l2_err(&ic_priv->sd, "could not get IDMAC channel %u\n",
 184                          prp_channel[task].rot_in_ch);
 185                 ret = PTR_ERR(rot_in_ch);
 186                 goto out;
 187         }
 188         priv->rot_in_ch = rot_in_ch;
 189
 190         rot_out_ch = ipu_idmac_get(priv->ipu, prp_channel[task].rot_out_ch);
 191         if (IS_ERR(rot_out_ch)) {
 192                 v4l2_err(&ic_priv->sd, "could not get IDMAC channel %u\n",
 193                          prp_channel[task].rot_out_ch);
 194                 ret = PTR_ERR(rot_out_ch);
 195                 goto out;
 196         }
 197         priv->rot_out_ch = rot_out_ch;
 198
 199         return 0;
 200 out:
 201         prp_put_ipu_resources(priv);
 202         return ret;
 203 }
 204
 205 static void prp_vb2_buf_done(struct prp_priv *priv, struct ipuv3_channel *ch)
 206 {
 207         struct imx_media_video_dev *vdev = priv->vdev;
 208         struct imx_media_buffer *done, *next;
 209         struct vb2_buffer *vb;
 210         dma_addr_t phys;
 211
 212         done = priv->active_vb2_buf[priv->ipu_buf_num];
 213         if (done) {
 214                 done->vbuf.field = vdev->fmt.fmt.pix.field;
 215                 done->vbuf.sequence = priv->frame_sequence;
 216                 vb = &done->vbuf.vb2_buf;
 217                 vb->timestamp = ktime_get_ns();
 218                 vb2_buffer_done(vb, priv->nfb4eof ?
 219                                 VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE);
 220         }
 221
 222         priv->frame_sequence++;
 223         priv->nfb4eof = false;
 224
 225         /* get next queued buffer */
 226         next = imx_media_capture_device_next_buf(vdev);
 227         if (next) {
 228                 phys = vb2_dma_contig_plane_dma_addr(&next->vbuf.vb2_buf, 0);
 229                 priv->active_vb2_buf[priv->ipu_buf_num] = next;
 230         } else {
 231                 phys = priv->underrun_buf.phys;
 232                 priv->active_vb2_buf[priv->ipu_buf_num] = NULL;
 233         }
 234
 235         if (ipu_idmac_buffer_is_ready(ch, priv->ipu_buf_num))
 236                 ipu_idmac_clear_buffer(ch, priv->ipu_buf_num);
 237
 238         ipu_cpmem_set_buffer(ch, priv->ipu_buf_num, phys);
 239 }
 240
 241 static irqreturn_t prp_eof_interrupt(int irq, void *dev_id)
 242 {
 243         struct prp_priv *priv = dev_id;
 244         struct ipuv3_channel *channel;
 245
 246         spin_lock(&priv->irqlock);
 247
 248         if (priv->last_eof) {
 249                 complete(&priv->last_eof_comp);
 250                 priv->last_eof = false;
 251                 goto unlock;
 252         }
 253
 254         channel = (ipu_rot_mode_is_irt(priv->rot_mode)) ?
 255                 priv->rot_out_ch : priv->out_ch;
 256
 257         prp_vb2_buf_done(priv, channel);
 258
 259         /* select new IPU buf */
 260         ipu_idmac_select_buffer(channel, priv->ipu_buf_num);
 261         /* toggle IPU double-buffer index */
 262         priv->ipu_buf_num ^= 1;
 263
 264         /* bump the EOF timeout timer */
 265         mod_timer(&priv->eof_timeout_timer,
 266                   jiffies + msecs_to_jiffies(IMX_MEDIA_EOF_TIMEOUT));
 267
 268 unlock:
 269         spin_unlock(&priv->irqlock);
 270         return IRQ_HANDLED;
 271 }
 272
 273 static irqreturn_t prp_nfb4eof_interrupt(int irq, void *dev_id)
 274 {
 275         struct prp_priv *priv = dev_id;
 276         struct imx_ic_priv *ic_priv = priv->ic_priv;
 277
 278         spin_lock(&priv->irqlock);
 279
 280         /*
 281          * this is not an unrecoverable error, just mark
 282          * the next captured frame with vb2 error flag.
 283          */
 284         priv->nfb4eof = true;
 285
 286         v4l2_err(&ic_priv->sd, "NFB4EOF\n");
 287
 288         spin_unlock(&priv->irqlock);
 289
 290         return IRQ_HANDLED;
 291 }
 292
 293 /*
 294  * EOF timeout timer function.
 295  */
 296 /*
 297  * EOF timeout timer function. This is an unrecoverable condition
 298  * without a stream restart.
 299  */
 300 static void prp_eof_timeout(struct timer_list *t)
 301 {
 302         struct prp_priv *priv = from_timer(priv, t, eof_timeout_timer);
 303         struct imx_media_video_dev *vdev = priv->vdev;
 304         struct imx_ic_priv *ic_priv = priv->ic_priv;
 305
 306         v4l2_err(&ic_priv->sd, "EOF timeout\n");
 307
 308         /* signal a fatal error to capture device */
 309         imx_media_capture_device_error(vdev);
 310 }
 311
 312 static void prp_setup_vb2_buf(struct prp_priv *priv, dma_addr_t *phys)
 313 {
 314         struct imx_media_video_dev *vdev = priv->vdev;
 315         struct imx_media_buffer *buf;
 316         int i;
 317
 318         for (i = 0; i < 2; i++) {
 319                 buf = imx_media_capture_device_next_buf(vdev);
 320                 if (buf) {
 321                         priv->active_vb2_buf[i] = buf;
 322                         phys[i] = vb2_dma_contig_plane_dma_addr(
 323                                 &buf->vbuf.vb2_buf, 0);
 324                 } else {
 325                         priv->active_vb2_buf[i] = NULL;
 326                         phys[i] = priv->underrun_buf.phys;
 327                 }
 328         }
 329 }
 330
 331 static void prp_unsetup_vb2_buf(struct prp_priv *priv,
 332                                 enum vb2_buffer_state return_status)
 333 {
 334         struct imx_media_buffer *buf;
 335         int i;
 336
 337         /* return any remaining active frames with return_status */
 338         for (i = 0; i < 2; i++) {
 339                 buf = priv->active_vb2_buf[i];
 340                 if (buf) {
 341                         struct vb2_buffer *vb = &buf->vbuf.vb2_buf;
 342
 343                         vb->timestamp = ktime_get_ns();
 344                         vb2_buffer_done(vb, return_status);
 345                 }
 346         }
 347 }
 348
 349 static int prp_setup_channel(struct prp_priv *priv,
 350                              struct ipuv3_channel *channel,
 351                              enum ipu_rotate_mode rot_mode,
 352                              dma_addr_t addr0, dma_addr_t addr1,
 353                              bool rot_swap_width_height)
 354 {
 355         struct imx_media_video_dev *vdev = priv->vdev;
 356         const struct imx_media_pixfmt *outcc;
 357         struct v4l2_mbus_framefmt *infmt;
 358         unsigned int burst_size;
 359         struct ipu_image image;
 360         int ret;
 361
 362         infmt = &priv->format_mbus[PRPENCVF_SINK_PAD];
 363         outcc = vdev->cc;
 364
 365         ipu_cpmem_zero(channel);
 366
 367         memset(&image, 0, sizeof(image));
 368         image.pix = vdev->fmt.fmt.pix;
 369         image.rect.width = image.pix.width;
 370         image.rect.height = image.pix.height;
 371
 372         if (rot_swap_width_height) {
 373                 swap(image.pix.width, image.pix.height);
 374                 swap(image.rect.width, image.rect.height);
 375                 /* recalc stride using swapped width */
 376                 image.pix.bytesperline = outcc->planar ?
 377                         image.pix.width :
 378                         (image.pix.width * outcc->bpp) >> 3;
 379         }
 380
 381         image.phys0 = addr0;
 382         image.phys1 = addr1;
 383
 384         if (channel == priv->out_ch || channel == priv->rot_out_ch) {
 385                 switch (image.pix.pixelformat) {
 386                 case V4L2_PIX_FMT_YUV420:
 387                 case V4L2_PIX_FMT_YVU420:
 388                 case V4L2_PIX_FMT_NV12:
 389                         /* Skip writing U and V components to odd rows */
 390                         ipu_cpmem_skip_odd_chroma_rows(channel);
 391                         break;
 392                 }
 393         }
 394
 395         ret = ipu_cpmem_set_image(channel, &image);
 396         if (ret)
 397                 return ret;
 398
 399         if (channel == priv->rot_in_ch ||
 400             channel == priv->rot_out_ch) {
 401                 burst_size = 8;
 402                 ipu_cpmem_set_block_mode(channel);
 403         } else {
 404                 burst_size = (image.pix.width & 0xf) ? 8 : 16;
 405         }
 406
 407         ipu_cpmem_set_burstsize(channel, burst_size);
 408
 409         if (rot_mode)
 410                 ipu_cpmem_set_rotation(channel, rot_mode);
 411
 412         if (image.pix.field == V4L2_FIELD_NONE &&
 413             V4L2_FIELD_HAS_BOTH(infmt->field) &&
 414             channel == priv->out_ch)
 415                 ipu_cpmem_interlaced_scan(channel, image.pix.bytesperline);
 416
 417         ret = ipu_ic_task_idma_init(priv->ic, channel,
 418                                     image.pix.width, image.pix.height,
 419                                     burst_size, rot_mode);
 420         if (ret)
 421                 return ret;
 422
 423         ipu_cpmem_set_axi_id(channel, 1);
 424
 425         ipu_idmac_set_double_buffer(channel, true);
 426
 427         return 0;
 428 }
 429
 430 static int prp_setup_rotation(struct prp_priv *priv)
 431 {
 432         struct imx_media_video_dev *vdev = priv->vdev;
 433         struct imx_ic_priv *ic_priv = priv->ic_priv;
 434         const struct imx_media_pixfmt *outcc, *incc;
 435         struct v4l2_mbus_framefmt *infmt;
 436         struct v4l2_pix_format *outfmt;
 437         dma_addr_t phys[2];
 438         int ret;
 439
 440         infmt = &priv->format_mbus[PRPENCVF_SINK_PAD];
 441         outfmt = &vdev->fmt.fmt.pix;
 442         incc = priv->cc[PRPENCVF_SINK_PAD];
 443         outcc = vdev->cc;
 444
 445         ret = imx_media_alloc_dma_buf(priv->md, &priv->rot_buf[0],
 446                                       outfmt->sizeimage);
 447         if (ret) {
 448                 v4l2_err(&ic_priv->sd, "failed to alloc rot_buf[0], %d\n", ret);
 449                 return ret;
 450         }
 451         ret = imx_media_alloc_dma_buf(priv->md, &priv->rot_buf[1],
 452                                       outfmt->sizeimage);
 453         if (ret) {
 454                 v4l2_err(&ic_priv->sd, "failed to alloc rot_buf[1], %d\n", ret);
 455                 goto free_rot0;
 456         }
 457
 458         ret = ipu_ic_task_init(priv->ic,
 459                                infmt->width, infmt->height,
 460                                outfmt->height, outfmt->width,
 461                                incc->cs, outcc->cs);
 462         if (ret) {
 463                 v4l2_err(&ic_priv->sd, "ipu_ic_task_init failed, %d\n", ret);
 464                 goto free_rot1;
 465         }
 466
 467         /* init the IC-PRP-->MEM IDMAC channel */
 468         ret = prp_setup_channel(priv, priv->out_ch, IPU_ROTATE_NONE,
 469                                 priv->rot_buf[0].phys, priv->rot_buf[1].phys,
 470                                 true);
 471         if (ret) {
 472                 v4l2_err(&ic_priv->sd,
 473                          "prp_setup_channel(out_ch) failed, %d\n", ret);
 474                 goto free_rot1;
 475         }
 476
 477         /* init the MEM-->IC-PRP ROT IDMAC channel */
 478         ret = prp_setup_channel(priv, priv->rot_in_ch, priv->rot_mode,
 479                                 priv->rot_buf[0].phys, priv->rot_buf[1].phys,
 480                                 true);
 481         if (ret) {
 482                 v4l2_err(&ic_priv->sd,
 483                          "prp_setup_channel(rot_in_ch) failed, %d\n", ret);
 484                 goto free_rot1;
 485         }
 486
 487         prp_setup_vb2_buf(priv, phys);
 488
 489         /* init the destination IC-PRP ROT-->MEM IDMAC channel */
 490         ret = prp_setup_channel(priv, priv->rot_out_ch, IPU_ROTATE_NONE,
 491                                 phys[0], phys[1],
 492                                 false);
 493         if (ret) {
 494                 v4l2_err(&ic_priv->sd,
 495                          "prp_setup_channel(rot_out_ch) failed, %d\n", ret);
 496                 goto unsetup_vb2;
 497         }
 498
 499         /* now link IC-PRP-->MEM to MEM-->IC-PRP ROT */
 500         ipu_idmac_link(priv->out_ch, priv->rot_in_ch);
 501
 502         /* enable the IC */
 503         ipu_ic_enable(priv->ic);
 504
 505         /* set buffers ready */
 506         ipu_idmac_select_buffer(priv->out_ch, 0);
 507         ipu_idmac_select_buffer(priv->out_ch, 1);
 508         ipu_idmac_select_buffer(priv->rot_out_ch, 0);
 509         ipu_idmac_select_buffer(priv->rot_out_ch, 1);
 510
 511         /* enable the channels */
 512         ipu_idmac_enable_channel(priv->out_ch);
 513         ipu_idmac_enable_channel(priv->rot_in_ch);
 514         ipu_idmac_enable_channel(priv->rot_out_ch);
 515
 516         /* and finally enable the IC PRP task */
 517         ipu_ic_task_enable(priv->ic);
 518
 519         return 0;
 520
 521 unsetup_vb2:
 522         prp_unsetup_vb2_buf(priv, VB2_BUF_STATE_QUEUED);
 523 free_rot1:
 524         imx_media_free_dma_buf(priv->md, &priv->rot_buf[1]);
 525 free_rot0:
 526         imx_media_free_dma_buf(priv->md, &priv->rot_buf[0]);
 527         return ret;
 528 }
 529
 530 static void prp_unsetup_rotation(struct prp_priv *priv)
 531 {
 532         ipu_ic_task_disable(priv->ic);
 533
 534         ipu_idmac_disable_channel(priv->out_ch);
 535         ipu_idmac_disable_channel(priv->rot_in_ch);
 536         ipu_idmac_disable_channel(priv->rot_out_ch);
 537
 538         ipu_idmac_unlink(priv->out_ch, priv->rot_in_ch);
 539
 540         ipu_ic_disable(priv->ic);
 541
 542         imx_media_free_dma_buf(priv->md, &priv->rot_buf[0]);
 543         imx_media_free_dma_buf(priv->md, &priv->rot_buf[1]);
 544 }
 545
 546 static int prp_setup_norotation(struct prp_priv *priv)
 547 {
 548         struct imx_media_video_dev *vdev = priv->vdev;
 549         struct imx_ic_priv *ic_priv = priv->ic_priv;
 550         const struct imx_media_pixfmt *outcc, *incc;
 551         struct v4l2_mbus_framefmt *infmt;
 552         struct v4l2_pix_format *outfmt;
 553         dma_addr_t phys[2];
 554         int ret;
 555
 556         infmt = &priv->format_mbus[PRPENCVF_SINK_PAD];
 557         outfmt = &vdev->fmt.fmt.pix;
 558         incc = priv->cc[PRPENCVF_SINK_PAD];
 559         outcc = vdev->cc;
 560
 561         ret = ipu_ic_task_init(priv->ic,
 562                                infmt->width, infmt->height,
 563                                outfmt->width, outfmt->height,
 564                                incc->cs, outcc->cs);
 565         if (ret) {
 566                 v4l2_err(&ic_priv->sd, "ipu_ic_task_init failed, %d\n", ret);
 567                 return ret;
 568         }
 569
 570         prp_setup_vb2_buf(priv, phys);
 571
 572         /* init the IC PRP-->MEM IDMAC channel */
 573         ret = prp_setup_channel(priv, priv->out_ch, priv->rot_mode,
 574                                 phys[0], phys[1], false);
 575         if (ret) {
 576                 v4l2_err(&ic_priv->sd,
 577                          "prp_setup_channel(out_ch) failed, %d\n", ret);
 578                 goto unsetup_vb2;
 579         }
 580
 581         ipu_cpmem_dump(priv->out_ch);
 582         ipu_ic_dump(priv->ic);
 583         ipu_dump(priv->ipu);
 584
 585         ipu_ic_enable(priv->ic);
 586
 587         /* set buffers ready */
 588         ipu_idmac_select_buffer(priv->out_ch, 0);
 589         ipu_idmac_select_buffer(priv->out_ch, 1);
 590
 591         /* enable the channels */
 592         ipu_idmac_enable_channel(priv->out_ch);
 593
 594         /* enable the IC task */
 595         ipu_ic_task_enable(priv->ic);
 596
 597         return 0;
 598
 599 unsetup_vb2:
 600         prp_unsetup_vb2_buf(priv, VB2_BUF_STATE_QUEUED);
 601         return ret;
 602 }
 603
 604 static void prp_unsetup_norotation(struct prp_priv *priv)
 605 {
 606         ipu_ic_task_disable(priv->ic);
 607         ipu_idmac_disable_channel(priv->out_ch);
 608         ipu_ic_disable(priv->ic);
 609 }
 610
 611 static void prp_unsetup(struct prp_priv *priv,
 612                         enum vb2_buffer_state state)
 613 {
 614         if (ipu_rot_mode_is_irt(priv->rot_mode))
 615                 prp_unsetup_rotation(priv);
 616         else
 617                 prp_unsetup_norotation(priv);
 618
 619         prp_unsetup_vb2_buf(priv, state);
 620 }
 621
 622 static int prp_start(struct prp_priv *priv)
 623 {
 624         struct imx_ic_priv *ic_priv = priv->ic_priv;
 625         struct imx_media_video_dev *vdev = priv->vdev;
 626         struct v4l2_pix_format *outfmt;
 627         int ret;
 628
 629         ret = prp_get_ipu_resources(priv);
 630         if (ret)
 631                 return ret;
 632
 633         outfmt = &vdev->fmt.fmt.pix;
 634
 635         ret = imx_media_alloc_dma_buf(priv->md, &priv->underrun_buf,
 636                                       outfmt->sizeimage);
 637         if (ret)
 638                 goto out_put_ipu;
 639
 640         priv->ipu_buf_num = 0;
 641
 642         /* init EOF completion waitq */
 643         init_completion(&priv->last_eof_comp);
 644         priv->frame_sequence = 0;
 645         priv->last_eof = false;
 646         priv->nfb4eof = false;
 647
 648         if (ipu_rot_mode_is_irt(priv->rot_mode))
 649                 ret = prp_setup_rotation(priv);
 650         else
 651                 ret = prp_setup_norotation(priv);
 652         if (ret)
 653                 goto out_free_underrun;
 654
 655         priv->nfb4eof_irq = ipu_idmac_channel_irq(priv->ipu,
 656                                                   priv->out_ch,
 657                                                   IPU_IRQ_NFB4EOF);
 658         ret = devm_request_irq(ic_priv->dev, priv->nfb4eof_irq,
 659                                prp_nfb4eof_interrupt, 0,
 660                                "imx-ic-prp-nfb4eof", priv);
 661         if (ret) {
 662                 v4l2_err(&ic_priv->sd,
 663                          "Error registering NFB4EOF irq: %d\n", ret);
 664                 goto out_unsetup;
 665         }
 666
 667         if (ipu_rot_mode_is_irt(priv->rot_mode))
 668                 priv->eof_irq = ipu_idmac_channel_irq(
 669                         priv->ipu, priv->rot_out_ch, IPU_IRQ_EOF);
 670         else
 671                 priv->eof_irq = ipu_idmac_channel_irq(
 672                         priv->ipu, priv->out_ch, IPU_IRQ_EOF);
 673
 674         ret = devm_request_irq(ic_priv->dev, priv->eof_irq,
 675                                prp_eof_interrupt, 0,
 676                                "imx-ic-prp-eof", priv);
 677         if (ret) {
 678                 v4l2_err(&ic_priv->sd,
 679                          "Error registering eof irq: %d\n", ret);
 680                 goto out_free_nfb4eof_irq;
 681         }
 682
 683         /* start upstream */
 684         ret = v4l2_subdev_call(priv->src_sd, video, s_stream, 1);
 685         ret = (ret && ret != -ENOIOCTLCMD) ? ret : 0;
 686         if (ret) {
 687                 v4l2_err(&ic_priv->sd,
 688                          "upstream stream on failed: %d\n", ret);
 689                 goto out_free_eof_irq;
 690         }
 691
 692         /* start the EOF timeout timer */
 693         mod_timer(&priv->eof_timeout_timer,
 694                   jiffies + msecs_to_jiffies(IMX_MEDIA_EOF_TIMEOUT));
 695
 696         return 0;
 697
 698 out_free_eof_irq:
 699         devm_free_irq(ic_priv->dev, priv->eof_irq, priv);
 700 out_free_nfb4eof_irq:
 701         devm_free_irq(ic_priv->dev, priv->nfb4eof_irq, priv);
 702 out_unsetup:
 703         prp_unsetup(priv, VB2_BUF_STATE_QUEUED);
 704 out_free_underrun:
 705         imx_media_free_dma_buf(priv->md, &priv->underrun_buf);
 706 out_put_ipu:
 707         prp_put_ipu_resources(priv);
 708         return ret;
 709 }
 710
 711 static void prp_stop(struct prp_priv *priv)
 712 {
 713         struct imx_ic_priv *ic_priv = priv->ic_priv;
 714         unsigned long flags;
 715         int ret;
 716
 717         /* mark next EOF interrupt as the last before stream off */
 718         spin_lock_irqsave(&priv->irqlock, flags);
 719         priv->last_eof = true;
 720         spin_unlock_irqrestore(&priv->irqlock, flags);
 721
 722         /*
 723          * and then wait for interrupt handler to mark completion.
 724          */
 725         ret = wait_for_completion_timeout(
 726                 &priv->last_eof_comp,
 727                 msecs_to_jiffies(IMX_MEDIA_EOF_TIMEOUT));
 728         if (ret == 0)
 729                 v4l2_warn(&ic_priv->sd, "wait last EOF timeout\n");
 730
 731         /* stop upstream */
 732         ret = v4l2_subdev_call(priv->src_sd, video, s_stream, 0);
 733         if (ret && ret != -ENOIOCTLCMD)
 734                 v4l2_warn(&ic_priv->sd,
 735                           "upstream stream off failed: %d\n", ret);
 736
 737         devm_free_irq(ic_priv->dev, priv->eof_irq, priv);
 738         devm_free_irq(ic_priv->dev, priv->nfb4eof_irq, priv);
 739
 740         prp_unsetup(priv, VB2_BUF_STATE_ERROR);
 741
 742         imx_media_free_dma_buf(priv->md, &priv->underrun_buf);
 743
 744         /* cancel the EOF timeout timer */
 745         del_timer_sync(&priv->eof_timeout_timer);
 746
 747         prp_put_ipu_resources(priv);
 748 }
 749
 750 static struct v4l2_mbus_framefmt *
 751 __prp_get_fmt(struct prp_priv *priv, struct v4l2_subdev_pad_config *cfg,
 752               unsigned int pad, enum v4l2_subdev_format_whence which)
 753 {
 754         struct imx_ic_priv *ic_priv = priv->ic_priv;
 755
 756         if (which == V4L2_SUBDEV_FORMAT_TRY)
 757                 return v4l2_subdev_get_try_format(&ic_priv->sd, cfg, pad);
 758         else
 759                 return &priv->format_mbus[pad];
 760 }
 761
 762 /*
 763  * Applies IC resizer and IDMAC alignment restrictions to output
 764  * rectangle given the input rectangle, and depending on given
 765  * rotation mode.
 766  *
 767  * The IC resizer cannot downsize more than 4:1. Note also that
 768  * for 90 or 270 rotation, _both_ output width and height must
 769  * be aligned by W_ALIGN_SRC, because the intermediate rotation
 770  * buffer swaps output width/height, and the final output buffer
 771  * does not.
 772  *
 773  * Returns true if the output rectangle was modified.
 774  */
 775 static bool prp_bound_align_output(struct v4l2_mbus_framefmt *outfmt,
 776                                    struct v4l2_mbus_framefmt *infmt,
 777                                    enum ipu_rotate_mode rot_mode)
 778 {
 779         u32 orig_width = outfmt->width;
 780         u32 orig_height = outfmt->height;
 781
 782         if (ipu_rot_mode_is_irt(rot_mode))
 783                 v4l_bound_align_image(&outfmt->width,
 784                                       infmt->height / 4, MAX_H_SRC,
 785                                       W_ALIGN_SRC,
 786                                       &outfmt->height,
 787                                       infmt->width / 4, MAX_W_SRC,
 788                                       W_ALIGN_SRC, S_ALIGN);
 789         else
 790                 v4l_bound_align_image(&outfmt->width,
 791                                       infmt->width / 4, MAX_W_SRC,
 792                                       W_ALIGN_SRC,
 793                                       &outfmt->height,
 794                                       infmt->height / 4, MAX_H_SRC,
 795                                       H_ALIGN_SRC, S_ALIGN);
 796
 797         return outfmt->width != orig_width || outfmt->height != orig_height;
 798 }
 799
 800 /*
 801  * V4L2 subdev operations.
 802  */
 803
 804 static int prp_enum_mbus_code(struct v4l2_subdev *sd,
 805                               struct v4l2_subdev_pad_config *cfg,
 806                               struct v4l2_subdev_mbus_code_enum *code)
 807 {
 808         if (code->pad >= PRPENCVF_NUM_PADS)
 809                 return -EINVAL;
 810
 811         return imx_media_enum_ipu_format(&code->code, code->index, CS_SEL_ANY);
 812 }
 813
 814 static int prp_get_fmt(struct v4l2_subdev *sd,
 815                        struct v4l2_subdev_pad_config *cfg,
 816                        struct v4l2_subdev_format *sdformat)
 817 {
 818         struct prp_priv *priv = sd_to_priv(sd);
 819         struct v4l2_mbus_framefmt *fmt;
 820         int ret = 0;
 821
 822         if (sdformat->pad >= PRPENCVF_NUM_PADS)
 823                 return -EINVAL;
 824
 825         mutex_lock(&priv->lock);
 826
 827         fmt = __prp_get_fmt(priv, cfg, sdformat->pad, sdformat->which);
 828         if (!fmt) {
 829                 ret = -EINVAL;
 830                 goto out;
 831         }
 832
 833         sdformat->format = *fmt;
 834 out:
 835         mutex_unlock(&priv->lock);
 836         return ret;
 837 }
 838
 839 static void prp_try_fmt(struct prp_priv *priv,
 840                         struct v4l2_subdev_pad_config *cfg,
 841                         struct v4l2_subdev_format *sdformat,
 842                         const struct imx_media_pixfmt **cc)
 843 {
 844         struct v4l2_mbus_framefmt *infmt;
 845
 846         *cc = imx_media_find_ipu_format(sdformat->format.code, CS_SEL_ANY);
 847         if (!*cc) {
 848                 u32 code;
 849
 850                 imx_media_enum_ipu_format(&code, 0, CS_SEL_ANY);
 851                 *cc = imx_media_find_ipu_format(code, CS_SEL_ANY);
 852                 sdformat->format.code = (*cc)->codes[0];
 853         }
 854
 855         infmt = __prp_get_fmt(priv, cfg, PRPENCVF_SINK_PAD, sdformat->which);
 856
 857         if (sdformat->pad == PRPENCVF_SRC_PAD) {
 858                 if (sdformat->format.field != V4L2_FIELD_NONE)
 859                         sdformat->format.field = infmt->field;
 860
 861                 prp_bound_align_output(&sdformat->format, infmt,
 862                                        priv->rot_mode);
 863
 864                 /* propagate colorimetry from sink */
 865                 sdformat->format.colorspace = infmt->colorspace;
 866                 sdformat->format.xfer_func = infmt->xfer_func;
 867                 sdformat->format.quantization = infmt->quantization;
 868                 sdformat->format.ycbcr_enc = infmt->ycbcr_enc;
 869         } else {
 870                 v4l_bound_align_image(&sdformat->format.width,
 871                                       MIN_W_SINK, MAX_W_SINK, W_ALIGN_SINK,
 872                                       &sdformat->format.height,
 873                                       MIN_H_SINK, MAX_H_SINK, H_ALIGN_SINK,
 874                                       S_ALIGN);
 875
 876                 imx_media_fill_default_mbus_fields(&sdformat->format, infmt,
 877                                                    true);
 878         }
 879 }
 880
 881 static int prp_set_fmt(struct v4l2_subdev *sd,
 882                        struct v4l2_subdev_pad_config *cfg,
 883                        struct v4l2_subdev_format *sdformat)
 884 {
 885         struct prp_priv *priv = sd_to_priv(sd);
 886         struct imx_media_video_dev *vdev = priv->vdev;
 887         const struct imx_media_pixfmt *cc;
 888         struct v4l2_pix_format vdev_fmt;
 889         struct v4l2_mbus_framefmt *fmt;
 890         int ret = 0;
 891
 892         if (sdformat->pad >= PRPENCVF_NUM_PADS)
 893                 return -EINVAL;
 894
 895         mutex_lock(&priv->lock);
 896
 897         if (priv->stream_count > 0) {
 898                 ret = -EBUSY;
 899                 goto out;
 900         }
 901
 902         prp_try_fmt(priv, cfg, sdformat, &cc);
 903
 904         fmt = __prp_get_fmt(priv, cfg, sdformat->pad, sdformat->which);
 905         *fmt = sdformat->format;
 906
 907         /* propagate a default format to source pad */
 908         if (sdformat->pad == PRPENCVF_SINK_PAD) {
 909                 const struct imx_media_pixfmt *outcc;
 910                 struct v4l2_mbus_framefmt *outfmt;
 911                 struct v4l2_subdev_format format;
 912
 913                 format.pad = PRPENCVF_SRC_PAD;
 914                 format.which = sdformat->which;
 915                 format.format = sdformat->format;
 916                 prp_try_fmt(priv, cfg, &format, &outcc);
 917
 918                 outfmt = __prp_get_fmt(priv, cfg, PRPENCVF_SRC_PAD,
 919                                        sdformat->which);
 920                 *outfmt = format.format;
 921                 if (sdformat->which == V4L2_SUBDEV_FORMAT_ACTIVE)
 922                         priv->cc[PRPENCVF_SRC_PAD] = outcc;
 923         }
 924
 925         if (sdformat->which == V4L2_SUBDEV_FORMAT_TRY)
 926                 goto out;
 927
 928         priv->cc[sdformat->pad] = cc;
 929
 930         /* propagate output pad format to capture device */
 931         imx_media_mbus_fmt_to_pix_fmt(&vdev_fmt,
 932                                       &priv->format_mbus[PRPENCVF_SRC_PAD],
 933                                       priv->cc[PRPENCVF_SRC_PAD]);
 934         mutex_unlock(&priv->lock);
 935         imx_media_capture_device_set_format(vdev, &vdev_fmt);
 936
 937         return 0;
 938 out:
 939         mutex_unlock(&priv->lock);
 940         return ret;
 941 }
 942
 943 static int prp_enum_frame_size(struct v4l2_subdev *sd,
 944                                struct v4l2_subdev_pad_config *cfg,
 945                                struct v4l2_subdev_frame_size_enum *fse)
 946 {
 947         struct prp_priv *priv = sd_to_priv(sd);
 948         struct v4l2_subdev_format format = {};
 949         const struct imx_media_pixfmt *cc;
 950         int ret = 0;
 951
 952         if (fse->pad >= PRPENCVF_NUM_PADS || fse->index != 0)
 953                 return -EINVAL;
 954
 955         mutex_lock(&priv->lock);
 956
 957         format.pad = fse->pad;
 958         format.which = fse->which;
 959         format.format.code = fse->code;
 960         format.format.width = 1;
 961         format.format.height = 1;
 962         prp_try_fmt(priv, cfg, &format, &cc);
 963         fse->min_width = format.format.width;
 964         fse->min_height = format.format.height;
 965
 966         if (format.format.code != fse->code) {
 967                 ret = -EINVAL;
 968                 goto out;
 969         }
 970
 971         format.format.code = fse->code;
 972         format.format.width = -1;
 973         format.format.height = -1;
 974         prp_try_fmt(priv, cfg, &format, &cc);
 975         fse->max_width = format.format.width;
 976         fse->max_height = format.format.height;
 977 out:
 978         mutex_unlock(&priv->lock);
 979         return ret;
 980 }
 981
 982 static int prp_link_setup(struct media_entity *entity,
 983                           const struct media_pad *local,
 984                           const struct media_pad *remote, u32 flags)
 985 {
 986         struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
 987         struct imx_ic_priv *ic_priv = v4l2_get_subdevdata(sd);
 988         struct prp_priv *priv = ic_priv->task_priv;
 989         struct v4l2_subdev *remote_sd;
 990         int ret = 0;
 991
 992         dev_dbg(ic_priv->dev, "link setup %s -> %s", remote->entity->name,
 993                 local->entity->name);
 994
 995         mutex_lock(&priv->lock);
 996
 997         if (local->flags & MEDIA_PAD_FL_SINK) {
 998                 if (!is_media_entity_v4l2_subdev(remote->entity)) {
 999                         ret = -EINVAL;
1000                         goto out;
1001                 }
1002
1003                 remote_sd = media_entity_to_v4l2_subdev(remote->entity);
1004
1005                 if (flags & MEDIA_LNK_FL_ENABLED) {
1006                         if (priv->src_sd) {
1007                                 ret = -EBUSY;
1008                                 goto out;
1009                         }
1010                         priv->src_sd = remote_sd;
1011                 } else {
1012                         priv->src_sd = NULL;
1013                 }
1014
1015                 goto out;
1016         }
1017
1018         /* this is the source pad */
1019
1020         /* the remote must be the device node */
1021         if (!is_media_entity_v4l2_video_device(remote->entity)) {
1022                 ret = -EINVAL;
1023                 goto out;
1024         }
1025
1026         if (flags & MEDIA_LNK_FL_ENABLED) {
1027                 if (priv->sink) {
1028                         ret = -EBUSY;
1029                         goto out;
1030                 }
1031         } else {
1032                 priv->sink = NULL;
1033                 goto out;
1034         }
1035
1036         priv->sink = remote->entity;
1037 out:
1038         mutex_unlock(&priv->lock);
1039         return ret;
1040 }
1041
1042 static int prp_s_ctrl(struct v4l2_ctrl *ctrl)
1043 {
1044         struct prp_priv *priv = container_of(ctrl->handler,
1045                                                struct prp_priv, ctrl_hdlr);
1046         struct imx_ic_priv *ic_priv = priv->ic_priv;
1047         enum ipu_rotate_mode rot_mode;
1048         int rotation, ret = 0;
1049         bool hflip, vflip;
1050
1051         mutex_lock(&priv->lock);
1052
1053         rotation = priv->rotation;
1054         hflip = priv->hflip;
1055         vflip = priv->vflip;
1056
1057         switch (ctrl->id) {
1058         case V4L2_CID_HFLIP:
1059                 hflip = (ctrl->val == 1);
1060                 break;
1061         case V4L2_CID_VFLIP:
1062                 vflip = (ctrl->val == 1);
1063                 break;
1064         case V4L2_CID_ROTATE:
1065                 rotation = ctrl->val;
1066                 break;
1067         default:
1068                 v4l2_err(&ic_priv->sd, "Invalid control\n");
1069                 ret = -EINVAL;
1070                 goto out;
1071         }
1072
1073         ret = ipu_degrees_to_rot_mode(&rot_mode, rotation, hflip, vflip);
1074         if (ret)
1075                 goto out;
1076
1077         if (rot_mode != priv->rot_mode) {
1078                 struct v4l2_mbus_framefmt outfmt, infmt;
1079
1080                 /* can't change rotation mid-streaming */
1081                 if (priv->stream_count > 0) {
1082                         ret = -EBUSY;
1083                         goto out;
1084                 }
1085
1086                 outfmt = priv->format_mbus[PRPENCVF_SRC_PAD];
1087                 infmt = priv->format_mbus[PRPENCVF_SINK_PAD];
1088
1089                 if (prp_bound_align_output(&outfmt, &infmt, rot_mode)) {
1090                         ret = -EINVAL;
1091                         goto out;
1092                 }
1093
1094                 priv->rot_mode = rot_mode;
1095                 priv->rotation = rotation;
1096                 priv->hflip = hflip;
1097                 priv->vflip = vflip;
1098         }
1099
1100 out:
1101         mutex_unlock(&priv->lock);
1102         return ret;
1103 }
1104
1105 static const struct v4l2_ctrl_ops prp_ctrl_ops = {
1106         .s_ctrl = prp_s_ctrl,
1107 };
1108
1109 static int prp_init_controls(struct prp_priv *priv)
1110 {
1111         struct imx_ic_priv *ic_priv = priv->ic_priv;
1112         struct v4l2_ctrl_handler *hdlr = &priv->ctrl_hdlr;
1113         int ret;
1114
1115         v4l2_ctrl_handler_init(hdlr, 3);
1116
1117         v4l2_ctrl_new_std(hdlr, &prp_ctrl_ops, V4L2_CID_HFLIP,
1118                           0, 1, 1, 0);
1119         v4l2_ctrl_new_std(hdlr, &prp_ctrl_ops, V4L2_CID_VFLIP,
1120                           0, 1, 1, 0);
1121         v4l2_ctrl_new_std(hdlr, &prp_ctrl_ops, V4L2_CID_ROTATE,
1122                           0, 270, 90, 0);
1123
1124         ic_priv->sd.ctrl_handler = hdlr;
1125
1126         if (hdlr->error) {
1127                 ret = hdlr->error;
1128                 goto out_free;
1129         }
1130
1131         v4l2_ctrl_handler_setup(hdlr);
1132         return 0;
1133
1134 out_free:
1135         v4l2_ctrl_handler_free(hdlr);
1136         return ret;
1137 }
1138
1139 static int prp_s_stream(struct v4l2_subdev *sd, int enable)
1140 {
1141         struct imx_ic_priv *ic_priv = v4l2_get_subdevdata(sd);
1142         struct prp_priv *priv = ic_priv->task_priv;
1143         int ret = 0;
1144
1145         mutex_lock(&priv->lock);
1146
1147         if (!priv->src_sd || !priv->sink) {
1148                 ret = -EPIPE;
1149                 goto out;
1150         }
1151
1152         /*
1153          * enable/disable streaming only if stream_count is
1154          * going from 0 to 1 / 1 to 0.
1155          */
1156         if (priv->stream_count != !enable)
1157                 goto update_count;
1158
1159         dev_dbg(ic_priv->dev, "stream %s\n", enable ? "ON" : "OFF");
1160
1161         if (enable)
1162                 ret = prp_start(priv);
1163         else
1164                 prp_stop(priv);
1165         if (ret)
1166                 goto out;
1167
1168 update_count:
1169         priv->stream_count += enable ? 1 : -1;
1170         if (priv->stream_count < 0)
1171                 priv->stream_count = 0;
1172 out:
1173         mutex_unlock(&priv->lock);
1174         return ret;
1175 }
1176
1177 static int prp_g_frame_interval(struct v4l2_subdev *sd,
1178                                 struct v4l2_subdev_frame_interval *fi)
1179 {
1180         struct prp_priv *priv = sd_to_priv(sd);
1181
1182         if (fi->pad >= PRPENCVF_NUM_PADS)
1183                 return -EINVAL;
1184
1185         mutex_lock(&priv->lock);
1186         fi->interval = priv->frame_interval;
1187         mutex_unlock(&priv->lock);
1188
1189         return 0;
1190 }
1191
1192 static int prp_s_frame_interval(struct v4l2_subdev *sd,
1193                                 struct v4l2_subdev_frame_interval *fi)
1194 {
1195         struct prp_priv *priv = sd_to_priv(sd);
1196
1197         if (fi->pad >= PRPENCVF_NUM_PADS)
1198                 return -EINVAL;
1199
1200         /* No limits on frame interval */
1201         mutex_lock(&priv->lock);
1202         priv->frame_interval = fi->interval;
1203         mutex_unlock(&priv->lock);
1204
1205         return 0;
1206 }
1207
1208 /*
1209  * retrieve our pads parsed from the OF graph by the media device
1210  */
1211 static int prp_registered(struct v4l2_subdev *sd)
1212 {
1213         struct prp_priv *priv = sd_to_priv(sd);
1214         int i, ret;
1215         u32 code;
1216
1217         /* get media device */
1218         priv->md = dev_get_drvdata(sd->v4l2_dev->dev);
1219
1220         for (i = 0; i < PRPENCVF_NUM_PADS; i++) {
1221                 priv->pad[i].flags = (i == PRPENCVF_SINK_PAD) ?
1222                         MEDIA_PAD_FL_SINK : MEDIA_PAD_FL_SOURCE;
1223
1224                 /* set a default mbus format  */
1225                 imx_media_enum_ipu_format(&code, 0, CS_SEL_YUV);
1226                 ret = imx_media_init_mbus_fmt(&priv->format_mbus[i],
1227                                               640, 480, code, V4L2_FIELD_NONE,
1228                                               &priv->cc[i]);
1229                 if (ret)
1230                         return ret;
1231         }
1232
1233         /* init default frame interval */
1234         priv->frame_interval.numerator = 1;
1235         priv->frame_interval.denominator = 30;
1236
1237         ret = media_entity_pads_init(&sd->entity, PRPENCVF_NUM_PADS,
1238                                      priv->pad);
1239         if (ret)
1240                 return ret;
1241
1242         ret = imx_media_capture_device_register(priv->vdev);
1243         if (ret)
1244                 return ret;
1245
1246         ret = imx_media_add_video_device(priv->md, priv->vdev);
1247         if (ret)
1248                 goto unreg;
1249
1250         ret = prp_init_controls(priv);
1251         if (ret)
1252                 goto unreg;
1253
1254         return 0;
1255 unreg:
1256         imx_media_capture_device_unregister(priv->vdev);
1257         return ret;
1258 }
1259
1260 static void prp_unregistered(struct v4l2_subdev *sd)
1261 {
1262         struct prp_priv *priv = sd_to_priv(sd);
1263
1264         imx_media_capture_device_unregister(priv->vdev);
1265         v4l2_ctrl_handler_free(&priv->ctrl_hdlr);
1266 }
1267
1268 static const struct v4l2_subdev_pad_ops prp_pad_ops = {
1269         .init_cfg = imx_media_init_cfg,
1270         .enum_mbus_code = prp_enum_mbus_code,
1271         .enum_frame_size = prp_enum_frame_size,
1272         .get_fmt = prp_get_fmt,
1273         .set_fmt = prp_set_fmt,
1274 };
1275
1276 static const struct v4l2_subdev_video_ops prp_video_ops = {
1277         .g_frame_interval = prp_g_frame_interval,
1278         .s_frame_interval = prp_s_frame_interval,
1279         .s_stream = prp_s_stream,
1280 };
1281
1282 static const struct media_entity_operations prp_entity_ops = {
1283         .link_setup = prp_link_setup,
1284         .link_validate = v4l2_subdev_link_validate,
1285 };
1286
1287 static const struct v4l2_subdev_ops prp_subdev_ops = {
1288         .video = &prp_video_ops,
1289         .pad = &prp_pad_ops,
1290 };
1291
1292 static const struct v4l2_subdev_internal_ops prp_internal_ops = {
1293         .registered = prp_registered,
1294         .unregistered = prp_unregistered,
1295 };
1296
1297 static int prp_init(struct imx_ic_priv *ic_priv)
1298 {
1299         struct prp_priv *priv;
1300
1301         priv = devm_kzalloc(ic_priv->dev, sizeof(*priv), GFP_KERNEL);
1302         if (!priv)
1303                 return -ENOMEM;
1304
1305         ic_priv->task_priv = priv;
1306         priv->ic_priv = ic_priv;
1307
1308         spin_lock_init(&priv->irqlock);
1309         timer_setup(&priv->eof_timeout_timer, prp_eof_timeout, 0);
1310
1311         priv->vdev = imx_media_capture_device_init(&ic_priv->sd,
1312                                                    PRPENCVF_SRC_PAD);
1313         if (IS_ERR(priv->vdev))
1314                 return PTR_ERR(priv->vdev);
1315
1316         mutex_init(&priv->lock);
1317
1318         return 0;
1319 }
1320
1321 static void prp_remove(struct imx_ic_priv *ic_priv)
1322 {
1323         struct prp_priv *priv = ic_priv->task_priv;
1324
1325         mutex_destroy(&priv->lock);
1326         imx_media_capture_device_remove(priv->vdev);
1327 }
1328
1329 struct imx_ic_ops imx_ic_prpencvf_ops = {
1330         .subdev_ops = &prp_subdev_ops,
1331         .internal_ops = &prp_internal_ops,
1332         .entity_ops = &prp_entity_ops,
1333         .init = prp_init,
1334         .remove = prp_remove,
1335 };