linux/drivers/staging/media/imx/imx-ic-prpencvf.c
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   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * V4L2 Capture IC Preprocess Subdev for Freescale i.MX5/6 SOC
   4 *
   5 * This subdevice handles capture of video frames from the CSI or VDIC,
   6 * which are routed directly to the Image Converter preprocess tasks,
   7 * for resizing, colorspace conversion, and rotation.
   8 *
   9 * Copyright (c) 2012-2017 Mentor Graphics Inc.
  10 */
  11#include <linux/delay.h>
  12#include <linux/interrupt.h>
  13#include <linux/module.h>
  14#include <linux/sched.h>
  15#include <linux/slab.h>
  16#include <linux/spinlock.h>
  17#include <linux/timer.h>
  18#include <media/v4l2-ctrls.h>
  19#include <media/v4l2-device.h>
  20#include <media/v4l2-ioctl.h>
  21#include <media/v4l2-mc.h>
  22#include <media/v4l2-subdev.h>
  23#include <media/imx.h>
  24#include "imx-media.h"
  25#include "imx-ic.h"
  26
  27/*
  28 * Min/Max supported width and heights.
  29 *
  30 * We allow planar output, so we have to align width at the source pad
  31 * by 16 pixels to meet IDMAC alignment requirements for possible planar
  32 * output.
  33 *
  34 * TODO: move this into pad format negotiation, if capture device
  35 * has not requested a planar format, we should allow 8 pixel
  36 * alignment at the source pad.
  37 */
  38#define MIN_W_SINK   32
  39#define MIN_H_SINK   32
  40#define MAX_W_SINK 4096
  41#define MAX_H_SINK 4096
  42#define W_ALIGN_SINK  3 /* multiple of 8 pixels */
  43#define H_ALIGN_SINK  1 /* multiple of 2 lines */
  44
  45#define MAX_W_SRC  1024
  46#define MAX_H_SRC  1024
  47#define W_ALIGN_SRC   1 /* multiple of 2 pixels */
  48#define H_ALIGN_SRC   1 /* multiple of 2 lines */
  49
  50#define S_ALIGN       1 /* multiple of 2 */
  51
  52struct prp_priv {
  53        struct imx_ic_priv *ic_priv;
  54        struct media_pad pad[PRPENCVF_NUM_PADS];
  55        /* the video device at output pad */
  56        struct imx_media_video_dev *vdev;
  57
  58        /* lock to protect all members below */
  59        struct mutex lock;
  60
  61        /* IPU units we require */
  62        struct ipu_ic *ic;
  63        struct ipuv3_channel *out_ch;
  64        struct ipuv3_channel *rot_in_ch;
  65        struct ipuv3_channel *rot_out_ch;
  66
  67        /* active vb2 buffers to send to video dev sink */
  68        struct imx_media_buffer *active_vb2_buf[2];
  69        struct imx_media_dma_buf underrun_buf;
  70
  71        int ipu_buf_num;  /* ipu double buffer index: 0-1 */
  72
  73        /* the sink for the captured frames */
  74        struct media_entity *sink;
  75        /* the source subdev */
  76        struct v4l2_subdev *src_sd;
  77
  78        struct v4l2_mbus_framefmt format_mbus[PRPENCVF_NUM_PADS];
  79        const struct imx_media_pixfmt *cc[PRPENCVF_NUM_PADS];
  80        struct v4l2_fract frame_interval;
  81
  82        struct imx_media_dma_buf rot_buf[2];
  83
  84        /* controls */
  85        struct v4l2_ctrl_handler ctrl_hdlr;
  86        int  rotation; /* degrees */
  87        bool hflip;
  88        bool vflip;
  89
  90        /* derived from rotation, hflip, vflip controls */
  91        enum ipu_rotate_mode rot_mode;
  92
  93        spinlock_t irqlock; /* protect eof_irq handler */
  94
  95        struct timer_list eof_timeout_timer;
  96        int eof_irq;
  97        int nfb4eof_irq;
  98
  99        int stream_count;
 100        u32 frame_sequence; /* frame sequence counter */
 101        bool last_eof;  /* waiting for last EOF at stream off */
 102        bool nfb4eof;    /* NFB4EOF encountered during streaming */
 103        bool interweave_swap; /* swap top/bottom lines when interweaving */
 104        struct completion last_eof_comp;
 105};
 106
 107static const struct prp_channels {
 108        u32 out_ch;
 109        u32 rot_in_ch;
 110        u32 rot_out_ch;
 111} prp_channel[] = {
 112        [IC_TASK_ENCODER] = {
 113                .out_ch = IPUV3_CHANNEL_IC_PRP_ENC_MEM,
 114                .rot_in_ch = IPUV3_CHANNEL_MEM_ROT_ENC,
 115                .rot_out_ch = IPUV3_CHANNEL_ROT_ENC_MEM,
 116        },
 117        [IC_TASK_VIEWFINDER] = {
 118                .out_ch = IPUV3_CHANNEL_IC_PRP_VF_MEM,
 119                .rot_in_ch = IPUV3_CHANNEL_MEM_ROT_VF,
 120                .rot_out_ch = IPUV3_CHANNEL_ROT_VF_MEM,
 121        },
 122};
 123
 124static inline struct prp_priv *sd_to_priv(struct v4l2_subdev *sd)
 125{
 126        struct imx_ic_priv *ic_priv = v4l2_get_subdevdata(sd);
 127
 128        return ic_priv->task_priv;
 129}
 130
 131static void prp_put_ipu_resources(struct prp_priv *priv)
 132{
 133        if (priv->ic)
 134                ipu_ic_put(priv->ic);
 135        priv->ic = NULL;
 136
 137        if (priv->out_ch)
 138                ipu_idmac_put(priv->out_ch);
 139        priv->out_ch = NULL;
 140
 141        if (priv->rot_in_ch)
 142                ipu_idmac_put(priv->rot_in_ch);
 143        priv->rot_in_ch = NULL;
 144
 145        if (priv->rot_out_ch)
 146                ipu_idmac_put(priv->rot_out_ch);
 147        priv->rot_out_ch = NULL;
 148}
 149
 150static int prp_get_ipu_resources(struct prp_priv *priv)
 151{
 152        struct imx_ic_priv *ic_priv = priv->ic_priv;
 153        struct ipu_ic *ic;
 154        struct ipuv3_channel *out_ch, *rot_in_ch, *rot_out_ch;
 155        int ret, task = ic_priv->task_id;
 156
 157        ic = ipu_ic_get(ic_priv->ipu, task);
 158        if (IS_ERR(ic)) {
 159                v4l2_err(&ic_priv->sd, "failed to get IC\n");
 160                ret = PTR_ERR(ic);
 161                goto out;
 162        }
 163        priv->ic = ic;
 164
 165        out_ch = ipu_idmac_get(ic_priv->ipu, prp_channel[task].out_ch);
 166        if (IS_ERR(out_ch)) {
 167                v4l2_err(&ic_priv->sd, "could not get IDMAC channel %u\n",
 168                         prp_channel[task].out_ch);
 169                ret = PTR_ERR(out_ch);
 170                goto out;
 171        }
 172        priv->out_ch = out_ch;
 173
 174        rot_in_ch = ipu_idmac_get(ic_priv->ipu, prp_channel[task].rot_in_ch);
 175        if (IS_ERR(rot_in_ch)) {
 176                v4l2_err(&ic_priv->sd, "could not get IDMAC channel %u\n",
 177                         prp_channel[task].rot_in_ch);
 178                ret = PTR_ERR(rot_in_ch);
 179                goto out;
 180        }
 181        priv->rot_in_ch = rot_in_ch;
 182
 183        rot_out_ch = ipu_idmac_get(ic_priv->ipu, prp_channel[task].rot_out_ch);
 184        if (IS_ERR(rot_out_ch)) {
 185                v4l2_err(&ic_priv->sd, "could not get IDMAC channel %u\n",
 186                         prp_channel[task].rot_out_ch);
 187                ret = PTR_ERR(rot_out_ch);
 188                goto out;
 189        }
 190        priv->rot_out_ch = rot_out_ch;
 191
 192        return 0;
 193out:
 194        prp_put_ipu_resources(priv);
 195        return ret;
 196}
 197
 198static void prp_vb2_buf_done(struct prp_priv *priv, struct ipuv3_channel *ch)
 199{
 200        struct imx_media_video_dev *vdev = priv->vdev;
 201        struct imx_media_buffer *done, *next;
 202        struct vb2_buffer *vb;
 203        dma_addr_t phys;
 204
 205        done = priv->active_vb2_buf[priv->ipu_buf_num];
 206        if (done) {
 207                done->vbuf.field = vdev->fmt.field;
 208                done->vbuf.sequence = priv->frame_sequence;
 209                vb = &done->vbuf.vb2_buf;
 210                vb->timestamp = ktime_get_ns();
 211                vb2_buffer_done(vb, priv->nfb4eof ?
 212                                VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE);
 213        }
 214
 215        priv->frame_sequence++;
 216        priv->nfb4eof = false;
 217
 218        /* get next queued buffer */
 219        next = imx_media_capture_device_next_buf(vdev);
 220        if (next) {
 221                phys = vb2_dma_contig_plane_dma_addr(&next->vbuf.vb2_buf, 0);
 222                priv->active_vb2_buf[priv->ipu_buf_num] = next;
 223        } else {
 224                phys = priv->underrun_buf.phys;
 225                priv->active_vb2_buf[priv->ipu_buf_num] = NULL;
 226        }
 227
 228        if (ipu_idmac_buffer_is_ready(ch, priv->ipu_buf_num))
 229                ipu_idmac_clear_buffer(ch, priv->ipu_buf_num);
 230
 231        if (priv->interweave_swap && ch == priv->out_ch)
 232                phys += vdev->fmt.bytesperline;
 233
 234        ipu_cpmem_set_buffer(ch, priv->ipu_buf_num, phys);
 235}
 236
 237static irqreturn_t prp_eof_interrupt(int irq, void *dev_id)
 238{
 239        struct prp_priv *priv = dev_id;
 240        struct ipuv3_channel *channel;
 241
 242        spin_lock(&priv->irqlock);
 243
 244        if (priv->last_eof) {
 245                complete(&priv->last_eof_comp);
 246                priv->last_eof = false;
 247                goto unlock;
 248        }
 249
 250        channel = (ipu_rot_mode_is_irt(priv->rot_mode)) ?
 251                priv->rot_out_ch : priv->out_ch;
 252
 253        prp_vb2_buf_done(priv, channel);
 254
 255        /* select new IPU buf */
 256        ipu_idmac_select_buffer(channel, priv->ipu_buf_num);
 257        /* toggle IPU double-buffer index */
 258        priv->ipu_buf_num ^= 1;
 259
 260        /* bump the EOF timeout timer */
 261        mod_timer(&priv->eof_timeout_timer,
 262                  jiffies + msecs_to_jiffies(IMX_MEDIA_EOF_TIMEOUT));
 263
 264unlock:
 265        spin_unlock(&priv->irqlock);
 266        return IRQ_HANDLED;
 267}
 268
 269static irqreturn_t prp_nfb4eof_interrupt(int irq, void *dev_id)
 270{
 271        struct prp_priv *priv = dev_id;
 272        struct imx_ic_priv *ic_priv = priv->ic_priv;
 273
 274        spin_lock(&priv->irqlock);
 275
 276        /*
 277         * this is not an unrecoverable error, just mark
 278         * the next captured frame with vb2 error flag.
 279         */
 280        priv->nfb4eof = true;
 281
 282        v4l2_err(&ic_priv->sd, "NFB4EOF\n");
 283
 284        spin_unlock(&priv->irqlock);
 285
 286        return IRQ_HANDLED;
 287}
 288
 289/*
 290 * EOF timeout timer function.
 291 */
 292/*
 293 * EOF timeout timer function. This is an unrecoverable condition
 294 * without a stream restart.
 295 */
 296static void prp_eof_timeout(struct timer_list *t)
 297{
 298        struct prp_priv *priv = from_timer(priv, t, eof_timeout_timer);
 299        struct imx_media_video_dev *vdev = priv->vdev;
 300        struct imx_ic_priv *ic_priv = priv->ic_priv;
 301
 302        v4l2_err(&ic_priv->sd, "EOF timeout\n");
 303
 304        /* signal a fatal error to capture device */
 305        imx_media_capture_device_error(vdev);
 306}
 307
 308static void prp_setup_vb2_buf(struct prp_priv *priv, dma_addr_t *phys)
 309{
 310        struct imx_media_video_dev *vdev = priv->vdev;
 311        struct imx_media_buffer *buf;
 312        int i;
 313
 314        for (i = 0; i < 2; i++) {
 315                buf = imx_media_capture_device_next_buf(vdev);
 316                if (buf) {
 317                        priv->active_vb2_buf[i] = buf;
 318                        phys[i] = vb2_dma_contig_plane_dma_addr(
 319                                &buf->vbuf.vb2_buf, 0);
 320                } else {
 321                        priv->active_vb2_buf[i] = NULL;
 322                        phys[i] = priv->underrun_buf.phys;
 323                }
 324        }
 325}
 326
 327static void prp_unsetup_vb2_buf(struct prp_priv *priv,
 328                                enum vb2_buffer_state return_status)
 329{
 330        struct imx_media_buffer *buf;
 331        int i;
 332
 333        /* return any remaining active frames with return_status */
 334        for (i = 0; i < 2; i++) {
 335                buf = priv->active_vb2_buf[i];
 336                if (buf) {
 337                        struct vb2_buffer *vb = &buf->vbuf.vb2_buf;
 338
 339                        vb->timestamp = ktime_get_ns();
 340                        vb2_buffer_done(vb, return_status);
 341                }
 342        }
 343}
 344
 345static int prp_setup_channel(struct prp_priv *priv,
 346                             struct ipuv3_channel *channel,
 347                             enum ipu_rotate_mode rot_mode,
 348                             dma_addr_t addr0, dma_addr_t addr1,
 349                             bool rot_swap_width_height)
 350{
 351        struct imx_media_video_dev *vdev = priv->vdev;
 352        const struct imx_media_pixfmt *outcc;
 353        struct v4l2_mbus_framefmt *outfmt;
 354        unsigned int burst_size;
 355        struct ipu_image image;
 356        bool interweave;
 357        int ret;
 358
 359        outfmt = &priv->format_mbus[PRPENCVF_SRC_PAD];
 360        outcc = vdev->cc;
 361
 362        ipu_cpmem_zero(channel);
 363
 364        memset(&image, 0, sizeof(image));
 365        image.pix = vdev->fmt;
 366        image.rect = vdev->compose;
 367
 368        /*
 369         * If the field type at capture interface is interlaced, and
 370         * the output IDMAC pad is sequential, enable interweave at
 371         * the IDMAC output channel.
 372         */
 373        interweave = V4L2_FIELD_IS_INTERLACED(image.pix.field) &&
 374                V4L2_FIELD_IS_SEQUENTIAL(outfmt->field);
 375        priv->interweave_swap = interweave &&
 376                image.pix.field == V4L2_FIELD_INTERLACED_BT;
 377
 378        if (rot_swap_width_height) {
 379                swap(image.pix.width, image.pix.height);
 380                swap(image.rect.width, image.rect.height);
 381                /* recalc stride using swapped width */
 382                image.pix.bytesperline = outcc->planar ?
 383                        image.pix.width :
 384                        (image.pix.width * outcc->bpp) >> 3;
 385        }
 386
 387        if (priv->interweave_swap && channel == priv->out_ch) {
 388                /* start interweave scan at 1st top line (2nd line) */
 389                image.rect.top = 1;
 390        }
 391
 392        image.phys0 = addr0;
 393        image.phys1 = addr1;
 394
 395        /*
 396         * Skip writing U and V components to odd rows in the output
 397         * channels for planar 4:2:0 (but not when enabling IDMAC
 398         * interweaving, they are incompatible).
 399         */
 400        if ((channel == priv->out_ch && !interweave) ||
 401            channel == priv->rot_out_ch) {
 402                switch (image.pix.pixelformat) {
 403                case V4L2_PIX_FMT_YUV420:
 404                case V4L2_PIX_FMT_YVU420:
 405                case V4L2_PIX_FMT_NV12:
 406                        ipu_cpmem_skip_odd_chroma_rows(channel);
 407                        break;
 408                }
 409        }
 410
 411        ret = ipu_cpmem_set_image(channel, &image);
 412        if (ret)
 413                return ret;
 414
 415        if (channel == priv->rot_in_ch ||
 416            channel == priv->rot_out_ch) {
 417                burst_size = 8;
 418                ipu_cpmem_set_block_mode(channel);
 419        } else {
 420                burst_size = (image.pix.width & 0xf) ? 8 : 16;
 421        }
 422
 423        ipu_cpmem_set_burstsize(channel, burst_size);
 424
 425        if (rot_mode)
 426                ipu_cpmem_set_rotation(channel, rot_mode);
 427
 428        if (interweave && channel == priv->out_ch)
 429                ipu_cpmem_interlaced_scan(channel,
 430                                          priv->interweave_swap ?
 431                                          -image.pix.bytesperline :
 432                                          image.pix.bytesperline,
 433                                          image.pix.pixelformat);
 434
 435        ret = ipu_ic_task_idma_init(priv->ic, channel,
 436                                    image.pix.width, image.pix.height,
 437                                    burst_size, rot_mode);
 438        if (ret)
 439                return ret;
 440
 441        ipu_cpmem_set_axi_id(channel, 1);
 442
 443        ipu_idmac_set_double_buffer(channel, true);
 444
 445        return 0;
 446}
 447
 448static int prp_setup_rotation(struct prp_priv *priv)
 449{
 450        struct imx_media_video_dev *vdev = priv->vdev;
 451        struct imx_ic_priv *ic_priv = priv->ic_priv;
 452        const struct imx_media_pixfmt *outcc, *incc;
 453        struct v4l2_mbus_framefmt *infmt;
 454        struct v4l2_pix_format *outfmt;
 455        struct ipu_ic_csc csc;
 456        dma_addr_t phys[2];
 457        int ret;
 458
 459        infmt = &priv->format_mbus[PRPENCVF_SINK_PAD];
 460        outfmt = &vdev->fmt;
 461        incc = priv->cc[PRPENCVF_SINK_PAD];
 462        outcc = vdev->cc;
 463
 464        ret = ipu_ic_calc_csc(&csc,
 465                              infmt->ycbcr_enc, infmt->quantization,
 466                              incc->cs,
 467                              outfmt->ycbcr_enc, outfmt->quantization,
 468                              outcc->cs);
 469        if (ret) {
 470                v4l2_err(&ic_priv->sd, "ipu_ic_calc_csc failed, %d\n",
 471                         ret);
 472                return ret;
 473        }
 474
 475        ret = imx_media_alloc_dma_buf(ic_priv->ipu_dev, &priv->rot_buf[0],
 476                                      outfmt->sizeimage);
 477        if (ret) {
 478                v4l2_err(&ic_priv->sd, "failed to alloc rot_buf[0], %d\n", ret);
 479                return ret;
 480        }
 481        ret = imx_media_alloc_dma_buf(ic_priv->ipu_dev, &priv->rot_buf[1],
 482                                      outfmt->sizeimage);
 483        if (ret) {
 484                v4l2_err(&ic_priv->sd, "failed to alloc rot_buf[1], %d\n", ret);
 485                goto free_rot0;
 486        }
 487
 488        ret = ipu_ic_task_init(priv->ic, &csc,
 489                               infmt->width, infmt->height,
 490                               outfmt->height, outfmt->width);
 491        if (ret) {
 492                v4l2_err(&ic_priv->sd, "ipu_ic_task_init failed, %d\n", ret);
 493                goto free_rot1;
 494        }
 495
 496        /* init the IC-PRP-->MEM IDMAC channel */
 497        ret = prp_setup_channel(priv, priv->out_ch, IPU_ROTATE_NONE,
 498                                priv->rot_buf[0].phys, priv->rot_buf[1].phys,
 499                                true);
 500        if (ret) {
 501                v4l2_err(&ic_priv->sd,
 502                         "prp_setup_channel(out_ch) failed, %d\n", ret);
 503                goto free_rot1;
 504        }
 505
 506        /* init the MEM-->IC-PRP ROT IDMAC channel */
 507        ret = prp_setup_channel(priv, priv->rot_in_ch, priv->rot_mode,
 508                                priv->rot_buf[0].phys, priv->rot_buf[1].phys,
 509                                true);
 510        if (ret) {
 511                v4l2_err(&ic_priv->sd,
 512                         "prp_setup_channel(rot_in_ch) failed, %d\n", ret);
 513                goto free_rot1;
 514        }
 515
 516        prp_setup_vb2_buf(priv, phys);
 517
 518        /* init the destination IC-PRP ROT-->MEM IDMAC channel */
 519        ret = prp_setup_channel(priv, priv->rot_out_ch, IPU_ROTATE_NONE,
 520                                phys[0], phys[1],
 521                                false);
 522        if (ret) {
 523                v4l2_err(&ic_priv->sd,
 524                         "prp_setup_channel(rot_out_ch) failed, %d\n", ret);
 525                goto unsetup_vb2;
 526        }
 527
 528        /* now link IC-PRP-->MEM to MEM-->IC-PRP ROT */
 529        ipu_idmac_link(priv->out_ch, priv->rot_in_ch);
 530
 531        /* enable the IC */
 532        ipu_ic_enable(priv->ic);
 533
 534        /* set buffers ready */
 535        ipu_idmac_select_buffer(priv->out_ch, 0);
 536        ipu_idmac_select_buffer(priv->out_ch, 1);
 537        ipu_idmac_select_buffer(priv->rot_out_ch, 0);
 538        ipu_idmac_select_buffer(priv->rot_out_ch, 1);
 539
 540        /* enable the channels */
 541        ipu_idmac_enable_channel(priv->out_ch);
 542        ipu_idmac_enable_channel(priv->rot_in_ch);
 543        ipu_idmac_enable_channel(priv->rot_out_ch);
 544
 545        /* and finally enable the IC PRP task */
 546        ipu_ic_task_enable(priv->ic);
 547
 548        return 0;
 549
 550unsetup_vb2:
 551        prp_unsetup_vb2_buf(priv, VB2_BUF_STATE_QUEUED);
 552free_rot1:
 553        imx_media_free_dma_buf(ic_priv->ipu_dev, &priv->rot_buf[1]);
 554free_rot0:
 555        imx_media_free_dma_buf(ic_priv->ipu_dev, &priv->rot_buf[0]);
 556        return ret;
 557}
 558
 559static void prp_unsetup_rotation(struct prp_priv *priv)
 560{
 561        struct imx_ic_priv *ic_priv = priv->ic_priv;
 562
 563        ipu_ic_task_disable(priv->ic);
 564
 565        ipu_idmac_disable_channel(priv->out_ch);
 566        ipu_idmac_disable_channel(priv->rot_in_ch);
 567        ipu_idmac_disable_channel(priv->rot_out_ch);
 568
 569        ipu_idmac_unlink(priv->out_ch, priv->rot_in_ch);
 570
 571        ipu_ic_disable(priv->ic);
 572
 573        imx_media_free_dma_buf(ic_priv->ipu_dev, &priv->rot_buf[0]);
 574        imx_media_free_dma_buf(ic_priv->ipu_dev, &priv->rot_buf[1]);
 575}
 576
 577static int prp_setup_norotation(struct prp_priv *priv)
 578{
 579        struct imx_media_video_dev *vdev = priv->vdev;
 580        struct imx_ic_priv *ic_priv = priv->ic_priv;
 581        const struct imx_media_pixfmt *outcc, *incc;
 582        struct v4l2_mbus_framefmt *infmt;
 583        struct v4l2_pix_format *outfmt;
 584        struct ipu_ic_csc csc;
 585        dma_addr_t phys[2];
 586        int ret;
 587
 588        infmt = &priv->format_mbus[PRPENCVF_SINK_PAD];
 589        outfmt = &vdev->fmt;
 590        incc = priv->cc[PRPENCVF_SINK_PAD];
 591        outcc = vdev->cc;
 592
 593        ret = ipu_ic_calc_csc(&csc,
 594                              infmt->ycbcr_enc, infmt->quantization,
 595                              incc->cs,
 596                              outfmt->ycbcr_enc, outfmt->quantization,
 597                              outcc->cs);
 598        if (ret) {
 599                v4l2_err(&ic_priv->sd, "ipu_ic_calc_csc failed, %d\n",
 600                         ret);
 601                return ret;
 602        }
 603
 604        ret = ipu_ic_task_init(priv->ic, &csc,
 605                               infmt->width, infmt->height,
 606                               outfmt->width, outfmt->height);
 607        if (ret) {
 608                v4l2_err(&ic_priv->sd, "ipu_ic_task_init failed, %d\n", ret);
 609                return ret;
 610        }
 611
 612        prp_setup_vb2_buf(priv, phys);
 613
 614        /* init the IC PRP-->MEM IDMAC channel */
 615        ret = prp_setup_channel(priv, priv->out_ch, priv->rot_mode,
 616                                phys[0], phys[1], false);
 617        if (ret) {
 618                v4l2_err(&ic_priv->sd,
 619                         "prp_setup_channel(out_ch) failed, %d\n", ret);
 620                goto unsetup_vb2;
 621        }
 622
 623        ipu_cpmem_dump(priv->out_ch);
 624        ipu_ic_dump(priv->ic);
 625        ipu_dump(ic_priv->ipu);
 626
 627        ipu_ic_enable(priv->ic);
 628
 629        /* set buffers ready */
 630        ipu_idmac_select_buffer(priv->out_ch, 0);
 631        ipu_idmac_select_buffer(priv->out_ch, 1);
 632
 633        /* enable the channels */
 634        ipu_idmac_enable_channel(priv->out_ch);
 635
 636        /* enable the IC task */
 637        ipu_ic_task_enable(priv->ic);
 638
 639        return 0;
 640
 641unsetup_vb2:
 642        prp_unsetup_vb2_buf(priv, VB2_BUF_STATE_QUEUED);
 643        return ret;
 644}
 645
 646static void prp_unsetup_norotation(struct prp_priv *priv)
 647{
 648        ipu_ic_task_disable(priv->ic);
 649        ipu_idmac_disable_channel(priv->out_ch);
 650        ipu_ic_disable(priv->ic);
 651}
 652
 653static void prp_unsetup(struct prp_priv *priv,
 654                        enum vb2_buffer_state state)
 655{
 656        if (ipu_rot_mode_is_irt(priv->rot_mode))
 657                prp_unsetup_rotation(priv);
 658        else
 659                prp_unsetup_norotation(priv);
 660
 661        prp_unsetup_vb2_buf(priv, state);
 662}
 663
 664static int prp_start(struct prp_priv *priv)
 665{
 666        struct imx_ic_priv *ic_priv = priv->ic_priv;
 667        struct imx_media_video_dev *vdev = priv->vdev;
 668        int ret;
 669
 670        ret = prp_get_ipu_resources(priv);
 671        if (ret)
 672                return ret;
 673
 674        ret = imx_media_alloc_dma_buf(ic_priv->ipu_dev, &priv->underrun_buf,
 675                                      vdev->fmt.sizeimage);
 676        if (ret)
 677                goto out_put_ipu;
 678
 679        priv->ipu_buf_num = 0;
 680
 681        /* init EOF completion waitq */
 682        init_completion(&priv->last_eof_comp);
 683        priv->frame_sequence = 0;
 684        priv->last_eof = false;
 685        priv->nfb4eof = false;
 686
 687        if (ipu_rot_mode_is_irt(priv->rot_mode))
 688                ret = prp_setup_rotation(priv);
 689        else
 690                ret = prp_setup_norotation(priv);
 691        if (ret)
 692                goto out_free_underrun;
 693
 694        priv->nfb4eof_irq = ipu_idmac_channel_irq(ic_priv->ipu,
 695                                                  priv->out_ch,
 696                                                  IPU_IRQ_NFB4EOF);
 697        ret = devm_request_irq(ic_priv->ipu_dev, priv->nfb4eof_irq,
 698                               prp_nfb4eof_interrupt, 0,
 699                               "imx-ic-prp-nfb4eof", priv);
 700        if (ret) {
 701                v4l2_err(&ic_priv->sd,
 702                         "Error registering NFB4EOF irq: %d\n", ret);
 703                goto out_unsetup;
 704        }
 705
 706        if (ipu_rot_mode_is_irt(priv->rot_mode))
 707                priv->eof_irq = ipu_idmac_channel_irq(
 708                        ic_priv->ipu, priv->rot_out_ch, IPU_IRQ_EOF);
 709        else
 710                priv->eof_irq = ipu_idmac_channel_irq(
 711                        ic_priv->ipu, priv->out_ch, IPU_IRQ_EOF);
 712
 713        ret = devm_request_irq(ic_priv->ipu_dev, priv->eof_irq,
 714                               prp_eof_interrupt, 0,
 715                               "imx-ic-prp-eof", priv);
 716        if (ret) {
 717                v4l2_err(&ic_priv->sd,
 718                         "Error registering eof irq: %d\n", ret);
 719                goto out_free_nfb4eof_irq;
 720        }
 721
 722        /* start upstream */
 723        ret = v4l2_subdev_call(priv->src_sd, video, s_stream, 1);
 724        ret = (ret && ret != -ENOIOCTLCMD) ? ret : 0;
 725        if (ret) {
 726                v4l2_err(&ic_priv->sd,
 727                         "upstream stream on failed: %d\n", ret);
 728                goto out_free_eof_irq;
 729        }
 730
 731        /* start the EOF timeout timer */
 732        mod_timer(&priv->eof_timeout_timer,
 733                  jiffies + msecs_to_jiffies(IMX_MEDIA_EOF_TIMEOUT));
 734
 735        return 0;
 736
 737out_free_eof_irq:
 738        devm_free_irq(ic_priv->ipu_dev, priv->eof_irq, priv);
 739out_free_nfb4eof_irq:
 740        devm_free_irq(ic_priv->ipu_dev, priv->nfb4eof_irq, priv);
 741out_unsetup:
 742        prp_unsetup(priv, VB2_BUF_STATE_QUEUED);
 743out_free_underrun:
 744        imx_media_free_dma_buf(ic_priv->ipu_dev, &priv->underrun_buf);
 745out_put_ipu:
 746        prp_put_ipu_resources(priv);
 747        return ret;
 748}
 749
 750static void prp_stop(struct prp_priv *priv)
 751{
 752        struct imx_ic_priv *ic_priv = priv->ic_priv;
 753        unsigned long flags;
 754        int ret;
 755
 756        /* mark next EOF interrupt as the last before stream off */
 757        spin_lock_irqsave(&priv->irqlock, flags);
 758        priv->last_eof = true;
 759        spin_unlock_irqrestore(&priv->irqlock, flags);
 760
 761        /*
 762         * and then wait for interrupt handler to mark completion.
 763         */
 764        ret = wait_for_completion_timeout(
 765                &priv->last_eof_comp,
 766                msecs_to_jiffies(IMX_MEDIA_EOF_TIMEOUT));
 767        if (ret == 0)
 768                v4l2_warn(&ic_priv->sd, "wait last EOF timeout\n");
 769
 770        /* stop upstream */
 771        ret = v4l2_subdev_call(priv->src_sd, video, s_stream, 0);
 772        if (ret && ret != -ENOIOCTLCMD)
 773                v4l2_warn(&ic_priv->sd,
 774                          "upstream stream off failed: %d\n", ret);
 775
 776        devm_free_irq(ic_priv->ipu_dev, priv->eof_irq, priv);
 777        devm_free_irq(ic_priv->ipu_dev, priv->nfb4eof_irq, priv);
 778
 779        prp_unsetup(priv, VB2_BUF_STATE_ERROR);
 780
 781        imx_media_free_dma_buf(ic_priv->ipu_dev, &priv->underrun_buf);
 782
 783        /* cancel the EOF timeout timer */
 784        del_timer_sync(&priv->eof_timeout_timer);
 785
 786        prp_put_ipu_resources(priv);
 787}
 788
 789static struct v4l2_mbus_framefmt *
 790__prp_get_fmt(struct prp_priv *priv, struct v4l2_subdev_state *sd_state,
 791              unsigned int pad, enum v4l2_subdev_format_whence which)
 792{
 793        struct imx_ic_priv *ic_priv = priv->ic_priv;
 794
 795        if (which == V4L2_SUBDEV_FORMAT_TRY)
 796                return v4l2_subdev_get_try_format(&ic_priv->sd, sd_state, pad);
 797        else
 798                return &priv->format_mbus[pad];
 799}
 800
 801/*
 802 * Applies IC resizer and IDMAC alignment restrictions to output
 803 * rectangle given the input rectangle, and depending on given
 804 * rotation mode.
 805 *
 806 * The IC resizer cannot downsize more than 4:1. Note also that
 807 * for 90 or 270 rotation, _both_ output width and height must
 808 * be aligned by W_ALIGN_SRC, because the intermediate rotation
 809 * buffer swaps output width/height, and the final output buffer
 810 * does not.
 811 *
 812 * Returns true if the output rectangle was modified.
 813 */
 814static bool prp_bound_align_output(struct v4l2_mbus_framefmt *outfmt,
 815                                   struct v4l2_mbus_framefmt *infmt,
 816                                   enum ipu_rotate_mode rot_mode)
 817{
 818        u32 orig_width = outfmt->width;
 819        u32 orig_height = outfmt->height;
 820
 821        if (ipu_rot_mode_is_irt(rot_mode))
 822                v4l_bound_align_image(&outfmt->width,
 823                                      infmt->height / 4, MAX_H_SRC,
 824                                      W_ALIGN_SRC,
 825                                      &outfmt->height,
 826                                      infmt->width / 4, MAX_W_SRC,
 827                                      W_ALIGN_SRC, S_ALIGN);
 828        else
 829                v4l_bound_align_image(&outfmt->width,
 830                                      infmt->width / 4, MAX_W_SRC,
 831                                      W_ALIGN_SRC,
 832                                      &outfmt->height,
 833                                      infmt->height / 4, MAX_H_SRC,
 834                                      H_ALIGN_SRC, S_ALIGN);
 835
 836        return outfmt->width != orig_width || outfmt->height != orig_height;
 837}
 838
 839/*
 840 * V4L2 subdev operations.
 841 */
 842
 843static int prp_enum_mbus_code(struct v4l2_subdev *sd,
 844                              struct v4l2_subdev_state *sd_state,
 845                              struct v4l2_subdev_mbus_code_enum *code)
 846{
 847        if (code->pad >= PRPENCVF_NUM_PADS)
 848                return -EINVAL;
 849
 850        return imx_media_enum_ipu_formats(&code->code, code->index,
 851                                          PIXFMT_SEL_YUV_RGB);
 852}
 853
 854static int prp_get_fmt(struct v4l2_subdev *sd,
 855                       struct v4l2_subdev_state *sd_state,
 856                       struct v4l2_subdev_format *sdformat)
 857{
 858        struct prp_priv *priv = sd_to_priv(sd);
 859        struct v4l2_mbus_framefmt *fmt;
 860        int ret = 0;
 861
 862        if (sdformat->pad >= PRPENCVF_NUM_PADS)
 863                return -EINVAL;
 864
 865        mutex_lock(&priv->lock);
 866
 867        fmt = __prp_get_fmt(priv, sd_state, sdformat->pad, sdformat->which);
 868        if (!fmt) {
 869                ret = -EINVAL;
 870                goto out;
 871        }
 872
 873        sdformat->format = *fmt;
 874out:
 875        mutex_unlock(&priv->lock);
 876        return ret;
 877}
 878
 879static void prp_try_fmt(struct prp_priv *priv,
 880                        struct v4l2_subdev_state *sd_state,
 881                        struct v4l2_subdev_format *sdformat,
 882                        const struct imx_media_pixfmt **cc)
 883{
 884        struct v4l2_mbus_framefmt *infmt;
 885
 886        *cc = imx_media_find_ipu_format(sdformat->format.code,
 887                                        PIXFMT_SEL_YUV_RGB);
 888        if (!*cc) {
 889                u32 code;
 890
 891                imx_media_enum_ipu_formats(&code, 0, PIXFMT_SEL_YUV_RGB);
 892                *cc = imx_media_find_ipu_format(code, PIXFMT_SEL_YUV_RGB);
 893
 894                sdformat->format.code = (*cc)->codes[0];
 895        }
 896
 897        infmt = __prp_get_fmt(priv, sd_state, PRPENCVF_SINK_PAD,
 898                              sdformat->which);
 899
 900        if (sdformat->pad == PRPENCVF_SRC_PAD) {
 901                sdformat->format.field = infmt->field;
 902
 903                prp_bound_align_output(&sdformat->format, infmt,
 904                                       priv->rot_mode);
 905
 906                /* propagate colorimetry from sink */
 907                sdformat->format.colorspace = infmt->colorspace;
 908                sdformat->format.xfer_func = infmt->xfer_func;
 909        } else {
 910                v4l_bound_align_image(&sdformat->format.width,
 911                                      MIN_W_SINK, MAX_W_SINK, W_ALIGN_SINK,
 912                                      &sdformat->format.height,
 913                                      MIN_H_SINK, MAX_H_SINK, H_ALIGN_SINK,
 914                                      S_ALIGN);
 915
 916                if (sdformat->format.field == V4L2_FIELD_ANY)
 917                        sdformat->format.field = V4L2_FIELD_NONE;
 918        }
 919
 920        imx_media_try_colorimetry(&sdformat->format, true);
 921}
 922
 923static int prp_set_fmt(struct v4l2_subdev *sd,
 924                       struct v4l2_subdev_state *sd_state,
 925                       struct v4l2_subdev_format *sdformat)
 926{
 927        struct prp_priv *priv = sd_to_priv(sd);
 928        const struct imx_media_pixfmt *cc;
 929        struct v4l2_mbus_framefmt *fmt;
 930        int ret = 0;
 931
 932        if (sdformat->pad >= PRPENCVF_NUM_PADS)
 933                return -EINVAL;
 934
 935        mutex_lock(&priv->lock);
 936
 937        if (priv->stream_count > 0) {
 938                ret = -EBUSY;
 939                goto out;
 940        }
 941
 942        prp_try_fmt(priv, sd_state, sdformat, &cc);
 943
 944        fmt = __prp_get_fmt(priv, sd_state, sdformat->pad, sdformat->which);
 945        *fmt = sdformat->format;
 946
 947        /* propagate a default format to source pad */
 948        if (sdformat->pad == PRPENCVF_SINK_PAD) {
 949                const struct imx_media_pixfmt *outcc;
 950                struct v4l2_mbus_framefmt *outfmt;
 951                struct v4l2_subdev_format format;
 952
 953                format.pad = PRPENCVF_SRC_PAD;
 954                format.which = sdformat->which;
 955                format.format = sdformat->format;
 956                prp_try_fmt(priv, sd_state, &format, &outcc);
 957
 958                outfmt = __prp_get_fmt(priv, sd_state, PRPENCVF_SRC_PAD,
 959                                       sdformat->which);
 960                *outfmt = format.format;
 961                if (sdformat->which == V4L2_SUBDEV_FORMAT_ACTIVE)
 962                        priv->cc[PRPENCVF_SRC_PAD] = outcc;
 963        }
 964
 965        if (sdformat->which == V4L2_SUBDEV_FORMAT_ACTIVE)
 966                priv->cc[sdformat->pad] = cc;
 967
 968out:
 969        mutex_unlock(&priv->lock);
 970        return ret;
 971}
 972
 973static int prp_enum_frame_size(struct v4l2_subdev *sd,
 974                               struct v4l2_subdev_state *sd_state,
 975                               struct v4l2_subdev_frame_size_enum *fse)
 976{
 977        struct prp_priv *priv = sd_to_priv(sd);
 978        struct v4l2_subdev_format format = {};
 979        const struct imx_media_pixfmt *cc;
 980        int ret = 0;
 981
 982        if (fse->pad >= PRPENCVF_NUM_PADS || fse->index != 0)
 983                return -EINVAL;
 984
 985        mutex_lock(&priv->lock);
 986
 987        format.pad = fse->pad;
 988        format.which = fse->which;
 989        format.format.code = fse->code;
 990        format.format.width = 1;
 991        format.format.height = 1;
 992        prp_try_fmt(priv, sd_state, &format, &cc);
 993        fse->min_width = format.format.width;
 994        fse->min_height = format.format.height;
 995
 996        if (format.format.code != fse->code) {
 997                ret = -EINVAL;
 998                goto out;
 999        }
1000
1001        format.format.code = fse->code;
1002        format.format.width = -1;
1003        format.format.height = -1;
1004        prp_try_fmt(priv, sd_state, &format, &cc);
1005        fse->max_width = format.format.width;
1006        fse->max_height = format.format.height;
1007out:
1008        mutex_unlock(&priv->lock);
1009        return ret;
1010}
1011
1012static int prp_link_setup(struct media_entity *entity,
1013                          const struct media_pad *local,
1014                          const struct media_pad *remote, u32 flags)
1015{
1016        struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
1017        struct imx_ic_priv *ic_priv = v4l2_get_subdevdata(sd);
1018        struct prp_priv *priv = ic_priv->task_priv;
1019        struct v4l2_subdev *remote_sd;
1020        int ret = 0;
1021
1022        dev_dbg(ic_priv->ipu_dev, "%s: link setup %s -> %s",
1023                ic_priv->sd.name, remote->entity->name, local->entity->name);
1024
1025        mutex_lock(&priv->lock);
1026
1027        if (local->flags & MEDIA_PAD_FL_SINK) {
1028                if (!is_media_entity_v4l2_subdev(remote->entity)) {
1029                        ret = -EINVAL;
1030                        goto out;
1031                }
1032
1033                remote_sd = media_entity_to_v4l2_subdev(remote->entity);
1034
1035                if (flags & MEDIA_LNK_FL_ENABLED) {
1036                        if (priv->src_sd) {
1037                                ret = -EBUSY;
1038                                goto out;
1039                        }
1040                        priv->src_sd = remote_sd;
1041                } else {
1042                        priv->src_sd = NULL;
1043                }
1044
1045                goto out;
1046        }
1047
1048        /* this is the source pad */
1049
1050        /* the remote must be the device node */
1051        if (!is_media_entity_v4l2_video_device(remote->entity)) {
1052                ret = -EINVAL;
1053                goto out;
1054        }
1055
1056        if (flags & MEDIA_LNK_FL_ENABLED) {
1057                if (priv->sink) {
1058                        ret = -EBUSY;
1059                        goto out;
1060                }
1061        } else {
1062                priv->sink = NULL;
1063                goto out;
1064        }
1065
1066        priv->sink = remote->entity;
1067out:
1068        mutex_unlock(&priv->lock);
1069        return ret;
1070}
1071
1072static int prp_s_ctrl(struct v4l2_ctrl *ctrl)
1073{
1074        struct prp_priv *priv = container_of(ctrl->handler,
1075                                               struct prp_priv, ctrl_hdlr);
1076        struct imx_ic_priv *ic_priv = priv->ic_priv;
1077        enum ipu_rotate_mode rot_mode;
1078        int rotation, ret = 0;
1079        bool hflip, vflip;
1080
1081        mutex_lock(&priv->lock);
1082
1083        rotation = priv->rotation;
1084        hflip = priv->hflip;
1085        vflip = priv->vflip;
1086
1087        switch (ctrl->id) {
1088        case V4L2_CID_HFLIP:
1089                hflip = (ctrl->val == 1);
1090                break;
1091        case V4L2_CID_VFLIP:
1092                vflip = (ctrl->val == 1);
1093                break;
1094        case V4L2_CID_ROTATE:
1095                rotation = ctrl->val;
1096                break;
1097        default:
1098                v4l2_err(&ic_priv->sd, "Invalid control\n");
1099                ret = -EINVAL;
1100                goto out;
1101        }
1102
1103        ret = ipu_degrees_to_rot_mode(&rot_mode, rotation, hflip, vflip);
1104        if (ret)
1105                goto out;
1106
1107        if (rot_mode != priv->rot_mode) {
1108                struct v4l2_mbus_framefmt outfmt, infmt;
1109
1110                /* can't change rotation mid-streaming */
1111                if (priv->stream_count > 0) {
1112                        ret = -EBUSY;
1113                        goto out;
1114                }
1115
1116                outfmt = priv->format_mbus[PRPENCVF_SRC_PAD];
1117                infmt = priv->format_mbus[PRPENCVF_SINK_PAD];
1118
1119                if (prp_bound_align_output(&outfmt, &infmt, rot_mode)) {
1120                        ret = -EINVAL;
1121                        goto out;
1122                }
1123
1124                priv->rot_mode = rot_mode;
1125                priv->rotation = rotation;
1126                priv->hflip = hflip;
1127                priv->vflip = vflip;
1128        }
1129
1130out:
1131        mutex_unlock(&priv->lock);
1132        return ret;
1133}
1134
1135static const struct v4l2_ctrl_ops prp_ctrl_ops = {
1136        .s_ctrl = prp_s_ctrl,
1137};
1138
1139static int prp_init_controls(struct prp_priv *priv)
1140{
1141        struct imx_ic_priv *ic_priv = priv->ic_priv;
1142        struct v4l2_ctrl_handler *hdlr = &priv->ctrl_hdlr;
1143        int ret;
1144
1145        v4l2_ctrl_handler_init(hdlr, 3);
1146
1147        v4l2_ctrl_new_std(hdlr, &prp_ctrl_ops, V4L2_CID_HFLIP,
1148                          0, 1, 1, 0);
1149        v4l2_ctrl_new_std(hdlr, &prp_ctrl_ops, V4L2_CID_VFLIP,
1150                          0, 1, 1, 0);
1151        v4l2_ctrl_new_std(hdlr, &prp_ctrl_ops, V4L2_CID_ROTATE,
1152                          0, 270, 90, 0);
1153
1154        ic_priv->sd.ctrl_handler = hdlr;
1155
1156        if (hdlr->error) {
1157                ret = hdlr->error;
1158                goto out_free;
1159        }
1160
1161        v4l2_ctrl_handler_setup(hdlr);
1162        return 0;
1163
1164out_free:
1165        v4l2_ctrl_handler_free(hdlr);
1166        return ret;
1167}
1168
1169static int prp_s_stream(struct v4l2_subdev *sd, int enable)
1170{
1171        struct imx_ic_priv *ic_priv = v4l2_get_subdevdata(sd);
1172        struct prp_priv *priv = ic_priv->task_priv;
1173        int ret = 0;
1174
1175        mutex_lock(&priv->lock);
1176
1177        if (!priv->src_sd || !priv->sink) {
1178                ret = -EPIPE;
1179                goto out;
1180        }
1181
1182        /*
1183         * enable/disable streaming only if stream_count is
1184         * going from 0 to 1 / 1 to 0.
1185         */
1186        if (priv->stream_count != !enable)
1187                goto update_count;
1188
1189        dev_dbg(ic_priv->ipu_dev, "%s: stream %s\n", sd->name,
1190                enable ? "ON" : "OFF");
1191
1192        if (enable)
1193                ret = prp_start(priv);
1194        else
1195                prp_stop(priv);
1196        if (ret)
1197                goto out;
1198
1199update_count:
1200        priv->stream_count += enable ? 1 : -1;
1201        if (priv->stream_count < 0)
1202                priv->stream_count = 0;
1203out:
1204        mutex_unlock(&priv->lock);
1205        return ret;
1206}
1207
1208static int prp_g_frame_interval(struct v4l2_subdev *sd,
1209                                struct v4l2_subdev_frame_interval *fi)
1210{
1211        struct prp_priv *priv = sd_to_priv(sd);
1212
1213        if (fi->pad >= PRPENCVF_NUM_PADS)
1214                return -EINVAL;
1215
1216        mutex_lock(&priv->lock);
1217        fi->interval = priv->frame_interval;
1218        mutex_unlock(&priv->lock);
1219
1220        return 0;
1221}
1222
1223static int prp_s_frame_interval(struct v4l2_subdev *sd,
1224                                struct v4l2_subdev_frame_interval *fi)
1225{
1226        struct prp_priv *priv = sd_to_priv(sd);
1227
1228        if (fi->pad >= PRPENCVF_NUM_PADS)
1229                return -EINVAL;
1230
1231        mutex_lock(&priv->lock);
1232
1233        /* No limits on valid frame intervals */
1234        if (fi->interval.numerator == 0 || fi->interval.denominator == 0)
1235                fi->interval = priv->frame_interval;
1236        else
1237                priv->frame_interval = fi->interval;
1238
1239        mutex_unlock(&priv->lock);
1240
1241        return 0;
1242}
1243
1244static int prp_registered(struct v4l2_subdev *sd)
1245{
1246        struct prp_priv *priv = sd_to_priv(sd);
1247        struct imx_ic_priv *ic_priv = priv->ic_priv;
1248        int i, ret;
1249        u32 code;
1250
1251        /* set a default mbus format  */
1252        imx_media_enum_ipu_formats(&code, 0, PIXFMT_SEL_YUV);
1253
1254        for (i = 0; i < PRPENCVF_NUM_PADS; i++) {
1255                ret = imx_media_init_mbus_fmt(&priv->format_mbus[i],
1256                                              IMX_MEDIA_DEF_PIX_WIDTH,
1257                                              IMX_MEDIA_DEF_PIX_HEIGHT, code,
1258                                              V4L2_FIELD_NONE, &priv->cc[i]);
1259                if (ret)
1260                        return ret;
1261        }
1262
1263        /* init default frame interval */
1264        priv->frame_interval.numerator = 1;
1265        priv->frame_interval.denominator = 30;
1266
1267        priv->vdev = imx_media_capture_device_init(ic_priv->ipu_dev,
1268                                                   &ic_priv->sd,
1269                                                   PRPENCVF_SRC_PAD, true);
1270        if (IS_ERR(priv->vdev))
1271                return PTR_ERR(priv->vdev);
1272
1273        ret = imx_media_capture_device_register(priv->vdev, 0);
1274        if (ret)
1275                goto remove_vdev;
1276
1277        ret = prp_init_controls(priv);
1278        if (ret)
1279                goto unreg_vdev;
1280
1281        return 0;
1282
1283unreg_vdev:
1284        imx_media_capture_device_unregister(priv->vdev);
1285remove_vdev:
1286        imx_media_capture_device_remove(priv->vdev);
1287        return ret;
1288}
1289
1290static void prp_unregistered(struct v4l2_subdev *sd)
1291{
1292        struct prp_priv *priv = sd_to_priv(sd);
1293
1294        imx_media_capture_device_unregister(priv->vdev);
1295        imx_media_capture_device_remove(priv->vdev);
1296
1297        v4l2_ctrl_handler_free(&priv->ctrl_hdlr);
1298}
1299
1300static const struct v4l2_subdev_pad_ops prp_pad_ops = {
1301        .init_cfg = imx_media_init_cfg,
1302        .enum_mbus_code = prp_enum_mbus_code,
1303        .enum_frame_size = prp_enum_frame_size,
1304        .get_fmt = prp_get_fmt,
1305        .set_fmt = prp_set_fmt,
1306};
1307
1308static const struct v4l2_subdev_video_ops prp_video_ops = {
1309        .g_frame_interval = prp_g_frame_interval,
1310        .s_frame_interval = prp_s_frame_interval,
1311        .s_stream = prp_s_stream,
1312};
1313
1314static const struct media_entity_operations prp_entity_ops = {
1315        .link_setup = prp_link_setup,
1316        .link_validate = v4l2_subdev_link_validate,
1317};
1318
1319static const struct v4l2_subdev_ops prp_subdev_ops = {
1320        .video = &prp_video_ops,
1321        .pad = &prp_pad_ops,
1322};
1323
1324static const struct v4l2_subdev_internal_ops prp_internal_ops = {
1325        .registered = prp_registered,
1326        .unregistered = prp_unregistered,
1327};
1328
1329static int prp_init(struct imx_ic_priv *ic_priv)
1330{
1331        struct prp_priv *priv;
1332        int i, ret;
1333
1334        priv = devm_kzalloc(ic_priv->ipu_dev, sizeof(*priv), GFP_KERNEL);
1335        if (!priv)
1336                return -ENOMEM;
1337
1338        ic_priv->task_priv = priv;
1339        priv->ic_priv = ic_priv;
1340
1341        spin_lock_init(&priv->irqlock);
1342        timer_setup(&priv->eof_timeout_timer, prp_eof_timeout, 0);
1343
1344        mutex_init(&priv->lock);
1345
1346        for (i = 0; i < PRPENCVF_NUM_PADS; i++) {
1347                priv->pad[i].flags = (i == PRPENCVF_SINK_PAD) ?
1348                        MEDIA_PAD_FL_SINK : MEDIA_PAD_FL_SOURCE;
1349        }
1350
1351        ret = media_entity_pads_init(&ic_priv->sd.entity, PRPENCVF_NUM_PADS,
1352                                     priv->pad);
1353        if (ret)
1354                mutex_destroy(&priv->lock);
1355
1356        return ret;
1357}
1358
1359static void prp_remove(struct imx_ic_priv *ic_priv)
1360{
1361        struct prp_priv *priv = ic_priv->task_priv;
1362
1363        mutex_destroy(&priv->lock);
1364}
1365
1366struct imx_ic_ops imx_ic_prpencvf_ops = {
1367        .subdev_ops = &prp_subdev_ops,
1368        .internal_ops = &prp_internal_ops,
1369        .entity_ops = &prp_entity_ops,
1370        .init = prp_init,
1371        .remove = prp_remove,
1372};
1373